JP6478101B2 - Terminal device - Google Patents

Description

  The present invention relates to a terminal device, and more particularly to a terminal device used in a wireless communication system of a mobile phone network.

  Recently, communication services using an unlicensed band in wireless communication are becoming widespread. For example, a communication service using a wireless LAN (Local Area Network) compliant with the IEEE (Institute of Electrical and Electronics Engineers) 802.11a standard is widespread in a frequency band of 5 GHz. The unlicensed band is a frequency band that can be used without requiring authorization from the authorities. An unlicensed band is also called an unlicensed band or an unlicensed frequency band. On the other hand, a frequency band that can be used by authorization by an authority is also called a licensed band or a frequency band that requires a license. Currently, a license band is allocated in LTE (Long Term Evolution) or LTE-Advanced (LTE-A), which is a typical communication method for public wireless communication networks. Regarding LTE or LTE-A, the introduction of a communication service using a license-free band is scheduled to be discussed after Release 13 in the 3rd Generation Partnership Project (3GPP).

  Carrier aggregation (CA: Carrier Aggregation) may be used as an elemental technology for realizing broadband wireless communication. CA is a technology that realizes high-speed and large-capacity communication using frequency bands called a plurality of component carriers (CC) at a time. A base station apparatus used for CA has one primary serving cell (Primary Serving Cell, hereinafter referred to as P cell) and one or more secondary serving cells (Secondary Serving Cell, hereinafter referred to as S cell). . The P cell is a base station device that transmits and receives control information (C-Plane: Control Plane) and user data (U-Plane: User Plane) to and from the terminal device. The S cell is a base station apparatus that mainly transmits and receives user data. With CA, a terminal device can be connected using a separate frequency band for the P cell and S cell. In LTE, it is considered to use a license-free band in the S cell. For example, Patent Literature 1 describes a user apparatus that displays CA availability, radio wave intensity (communication quality), and maximum throughput in order to promote the use of CA.

JP 2014-17623 A

  However, although the user apparatus described in Patent Literature 1 displays whether or not CA is notified from surrounding base station apparatuses, the CA is not always usable in a user-desired frequency band. For example, when a license-free band is used in the 5 GHz band, interference with radio waves used in various applications may not be avoided. The interference includes, for example, interference with radio waves used by various radars and devices of other operators, interference with radio waves used in communication services by wireless LAN and LTE, and the like. The 5 GHz band is assigned to various radars such as weather radar in addition to wireless communication services, and measures to prevent the radar function from being affected by the terminal device, for example, DFS (Dynamic Frequency Selection) This is because a band that requires introduction or the like is included. For this reason, when using a license-unnecessary band in CA, communication quality may be deteriorated as compared with the case where only the license band is used for both the P cell and the S cell, but the user is forced to accept such deterioration.

  The present invention has been made in view of the above points, and provides a terminal device that can use different types of frequency bands at an arbitrary timing in CA.

The present invention has been made to solve the above problems, and one aspect of the present invention is based on a band detection unit that detects a band of a received signal from a base station apparatus, and identification information indicated by the received signal. A band identification unit for identifying whether the license type of the band is a license band or a license-unnecessary band, a display control unit for displaying the license type of the band connected to the base station apparatus on the display unit, and an operation input A connection control unit that connects to a base station device that uses a predetermined type of band, and the display control unit displays a search type selection screen on the display unit when detecting an operation for displaying the license type, The search type selection screen detects the first search type for detecting only the license band and the license band in preference to the license-unnecessary band. If the number of licensed license bands is less than the maximum number of bands used in carrier aggregation, the second search type for detecting license-free bands, the license-free band is detected in preference to the license band, and the detected license is not required When the number of bands is less than the maximum number of bands, the display includes a third search type for detecting a license band and a fourth search type for detecting only a license- unnecessary band, and the band detection unit is selected by an operation. The connection control unit is a terminal device that detects an unused band in which the own device is located in accordance with a search type related to the display, and connects using the band detected by the band detection unit.

  ADVANTAGE OF THE INVENTION According to this invention, the terminal device which can utilize a different kind of frequency band in arbitrary timing in CA is provided.

It is a conceptual diagram which shows an example of the communication system which concerns on this embodiment. It is a schematic block diagram which shows the structure of the terminal device which concerns on this embodiment. It is a figure which shows the example of a display of the classification of a frequency band. It is a figure which shows the other example of a display of the classification of a frequency band. It is a figure for demonstrating the operation shortening system. It is a figure which shows the example of a display in connection control. It is a flowchart which shows the connection control which concerns on this embodiment. It is a flowchart which shows the search classification selection process which concerns on this embodiment. It is a flowchart which shows the connection process 1 which concerns on this embodiment. It is a flowchart which shows the connection process 2 which concerns on this embodiment.

FIG. 1 is a conceptual diagram illustrating an example of a communication system 1 according to the present embodiment.
The communication system 1 includes base station apparatuses 10-1 and 10-2 and a terminal apparatus 20. Cells X-UL and Y-L are ranges in which radio waves from base station apparatuses 10-1 and 10-2 reach, respectively. Note that the term “cell” may mean a base station device that communicates with a terminal device within the range, or a frequency band of a radio wave related to the range. Base station apparatuses 10-1 and 10-2 each transmit a notification signal by radio waves at predetermined time intervals (for example, 50 ms). The notification signal is a signal indicating network system information (System Information). The system information includes network operator (operator) information. Moreover, the base station apparatuses 10-1 and 10-2 can execute CA mutually.

The base station apparatus 10-1 is a base station apparatus connected to the core network of the operator X. The base station device 10-1 can provide a communication service to the terminal device 20 using the license-unnecessary band U1.
The base station device 10-2 is a base station device connected to the core network of the operator Y. The base station apparatus 10-2 can provide a communication service to the terminal apparatus 20 using the license band L1.

  The terminal device 20 is a user device (UE: User Equipment) capable of mounting a UIM (User Identity Module) card. The terminal device 20 attaches a UIM card storing the business information of the business operator Y, thereby detecting the license band L1 and performing communication using the business operator Y network (HPLMN: Home Public Land Mobile Network). be able to. In the example illustrated in FIG. 1, the terminal device 20 is located in an area where the cells X-UL and YL overlap. At this position, the terminal device 20 can detect the license band L1 and use the network of the operator Y, or can detect the license unnecessary band U1 and use the network of the operator X. However, the operator information of the operator X that provides the license-unnecessary band U1 is set in the terminal device 20. For example, it is assumed that the terminal device 20 is capable of executing CA by selecting both the license unnecessary band U1 provided by the operator X and the license band L1 provided by the operator Y. Further, when detecting a separate license band by performing a cell search, the terminal device 20 can use only the license band by releasing the license-unnecessary band U1 being connected. When detecting a separate license-unnecessary band, the terminal device 20 can use only the license-unnecessary band by releasing the license band L1 being connected. According to the present embodiment, it is possible to avoid deterioration in communication quality by using a frequency band detected at a user-desired timing in CA with the configuration described below.

  In FIG. 1, the number of base station apparatuses 10-1 and 10-2 that provide a license-unnecessary band and a license band is one, and the number of terminal apparatuses 20 is one. Is not limited. The number of base station apparatuses 10-1 and 10-2 may be 1 or 3 or more. In the following description, these base station devices may be collectively referred to as the base station device 10. The number of terminal devices 20 is generally plural. In addition, a combination of CC and base station apparatus 10 that can execute CA is defined in advance, and information indicating whether CA is possible is included in the system information. In other words, in order for the terminal device 20 to perform CA, it is necessary that the terminal device 20 is in the cell of the plurality of base station devices 10 and that each of the base station devices 10 can execute processing related to CA. As a process related to CA, for example, a process described in the 3GPP TS36.300 standard may be used.

(Configuration of terminal device)
Next, the configuration of the terminal device 20 according to the present embodiment will be described.
FIG. 2 is a schematic block diagram illustrating a configuration of the terminal device 20 according to the present embodiment.
The terminal device 20 is an electronic device that can communicate with a device such as a counterpart terminal device via the base station device 10. The terminal device 20 is, for example, a mobile phone (including a smartphone), a tablet terminal device, a communication card, or the like.
The terminal device 20 includes a communication unit 21, a control unit 22, a display unit 23, an operation input unit 24, and a storage unit 25, and includes a connector (not shown) that detachably fixes the UIM card 26.

The communication unit 21 performs wireless communication via the base station device 10 using a predetermined method (for example, LTE, LTE-A).
The communication unit 21 includes M (M is an integer of 2 or larger, for example, 3) first transmission units 211-1 to 211 -M and M first reception units 212-1. To M-th receiving unit 212-M. An antenna is connected to each of the first transmission unit 211-1 to the M-th transmission unit 211 -M and the first reception unit 212-1 to the M-th reception unit 212 -M. In the following description, the first transmission unit 211-1 to the M-th transmission unit 211 -M are collectively referred to as the transmission unit 211, and the first reception unit 212-1 to the M-th reception unit 212 -M are referred to as the reception unit 212. Sometimes referred to generically.

The first transmission unit 211-1 to the M-th transmission unit 211 -M transmit various types of data from the antenna using radio waves using different frequency bands. The first receiving unit 212-1 to the M-th receiving unit 212-M use various frequency bands, and receive various types of data with radio waves having different frequency bands via the antenna.
The frequency bands used by the first transmission unit 211-1 to the M-th transmission unit 211 -M and the first reception unit 212-1 to the M-th reception unit 212 -M include at least one license unnecessary band U 1, U 2,. And at least one license band L1, L2,... The license-unnecessary bands U1, U2,... Are non-licensing frequency bands defined by a predetermined communication standard. For example, the license unnecessary band U1 is a 5.0 GHz band. The license band L1,... Is a frequency band that requires a license defined by a predetermined communication standard. For example, the license band L1 is a 2.0 GHz band defined by LTE.
Note that members that can be shared within the frequency band that can be used between the transmission unit 211 and the reception unit 212 may be shared.

  The control unit 22 functions as a band detection unit 221, a band identification unit 222, a band selection unit 223, a connection processing unit 224, a display control unit 225, and a connection control unit 226, and executes various processes related to communication. The control unit 22 includes a processing device such as a CPU (Central Processing Unit) and a main storage device such as a RAM (Random Access Memory).

The band detection unit 221 performs a cell search to detect the frequency band (band) of the cell in which the device is located. In the cell search, the band detector 221 measures the electric field strength for each frequency band of the received signal received by the receiver 212, and detects a received signal in a frequency band in which the measured intensity is higher than a preset intensity. A broadcast signal transmitted from each base station apparatus as a received signal is detected.
Note that the band detection unit 221 can exclude the frequency band indicated by the search target exclusion data stored in the storage unit 25 from the cell search target, and can set the frequency band other than the frequency band as the cell search target. As the search exclusion data, the connection control unit 226 sets data indicating the frequency band of the license-unnecessary band to detect the license band, and sets data indicating the frequency band of the license band to set the license-unnecessary band. Detected. In addition, immediately after the activation, the band detection unit 221 may ignore the search object exclusion data and detect the frequency band of the cell that is located regardless of the type of the frequency band.

  The band identification unit 222 identifies the type of each frequency band detected by the band detection unit 221 based on the provider information extracted from the received signal received in the frequency band. The band identification unit 222 determines whether or not the extracted business operator information matches each of the business operator information stored in advance in the storage unit 25 or the UIM card 26. For example, the band identifying unit 222 determines that the type of the frequency band related to the provider information that matches the provider information of the provider that provides the license-unnecessary band (hereinafter, the license-unnecessary band provider) is the license-unnecessary band. The band identifying unit 222 determines that the type of the frequency band related to the provider information that matches the provider information of the provider that provides the license band (hereinafter, “license band provider”) is the license band. However, some businesses may provide both licensed and unlicensed bands. Therefore, the band identification unit 222 stores in advance known frequency allocation information in which the carrier information for each frequency band is associated with the type of whether the frequency band is a license band or a license-unnecessary band. It may be left. In that case, the band identifying unit 222 can identify the type of the detected frequency band with reference to the frequency allocation information.

  The band selection unit 223 selects a frequency band used for communication among the frequency bands detected by the band detection unit 221. When the connection control unit 226 sets search target exclusion data used by the band detection unit 221, the band selection unit 223 selects an unused frequency band among the frequency bands detected by the band detection unit 221. You may select regardless. When the connection control unit 226 does not set search target exclusion data, the band selection unit 223 is an unused frequency band among the frequency bands detected by the band detection unit 221 and is instructed by the connection control unit 226. You may select the frequency band of a classification. Further, the band selection unit 223 may select the frequency band instructed by the connection control unit 226 based on the operation input, as will be described later.

  The connection processing unit 224 performs processing related to connection with the base station apparatus 10 that performs communication using the frequency band selected by the band selection unit 223. Specifically, the process described in the 3GPP TS36.300 standard can be used as the process related to the connection. When there are two or more frequency bands selected by the band selection unit 223 and the frequency bands (CC) are related to the base station apparatuses 10 capable of mutual CA, the connection processing unit 224 CA-related processing is performed between the two.

Here, the connection processing unit 224 transmits a measurement report indicating the quality of the selected frequency band to the base station apparatus 10 related to the frequency band. Based on the measurement report, the base station apparatus 10 determines whether or not CA is possible, and determines the P cell and S cell when performing CA. As a response to the measurement report, the connection processing unit 224 receives from the base station device 10 an RRC connection reconfiguration message indicating that CA is possible and P cell and S cell information, and an RRC connection reconfiguration completion message. Is transmitted to the base station apparatus 10. As a response to the message, the connection processing unit 224 receives a MAC activation command indicating that the base station device 10 is used for CA, and transmits an acknowledgment (MAC ACK) to the base station device 10. The addition or deletion of the S cell is notified by the MAC activation command. As a result, the connection processing unit 224 can perform CA with the base station apparatus 10 that has transmitted the confirmation response.
In addition, when connecting to a newly detected frequency band of a predetermined type, if the connection processing unit 224 is connected to another type of frequency band, the connection processing unit 224 releases the connection of the frequency band of the other type. May be. Data is transmitted / received to / from a communication partner device using the newly connected frequency band.

  The display control unit 225 causes the display unit 23 to display the frequency band being used, that is, the type of the frequency band used for communication with the base station device 10. The display control unit 225 causes the display unit 23 to display a graphic having an aspect corresponding to the type of the frequency band. The type of frequency band displayed by the display control unit 225 is a distinction between one or a plurality of frequency bands, each of which is a license band, all of which are license-free bands, and a mixture of license bands and license-free bands (hereinafter “mixed”). There may be a type of each frequency band. The mode according to the type of frequency band may be, for example, color, shape, presence / absence of blinking (blink), or any combination thereof. The display control unit 225 combines the aspects based on the communication quality for each frequency band, for example, electric field strength, SINR (Signal-to-Interference plus Noise power Ratio), etc., or an indicator indicating any combination thereof. You may display the figure which I did. A display example will be described later.

  The connection control unit 226 performs processing (connection control) for connecting to the base station apparatus 10 using a predetermined type of frequency band in accordance with the operation signal input from the operation input unit 24. When the connection control unit 226 detects a predetermined operation (trigger operation) based on the operation signal, the connection detection unit 226 detects a frequency band that can be used by the band detection unit 221 and a predetermined type of frequency band among the detected frequency bands. Is connected to the base station apparatus 10 that performs communication. The connection control processing modes include, for example, a fixed method, a toggle method, a simple selection method, an operation shortening method, and a detailed setting method. The connection control processing mode will be described later.

The display unit 23 displays various information input from the control unit 22. The display unit 23 is, for example, a liquid crystal display (LCD: Liquid Crystal Display), an organic EL display (Organic Electroluminescence Display), or the like.
The operation input unit 24 receives an operation input by the user, and outputs an operation signal corresponding to the received operation input to the control unit 22. The operation input unit 24 is, for example, a touch sensor. The touch sensor may be configured as a touch panel integrated with the display of the display unit 23.

The storage unit 25 includes a storage medium that stores data required for the operation of the terminal device 20 and data generated or input by the operation of the terminal device 20. The storage medium includes any one of ROM (Read-only Memory), RAM, HDD (Hard-disk Drive), or any combination thereof. The storage unit 25 stores, for example, business information of a license-unnecessary band business operator, search target exclusion data, data indicating a frequency band of a license-unnecessary band, data indicating a frequency band of a license band, and the like. For example, these data may be stored in the storage unit 25 when the terminal device 20 is manufactured, may be stored when the terminal device 20 is activated, or connected to a network in accordance with a user operation input. What is acquired from the server device may be stored.
The UIM card 26 stores the business information of the licensed band operator that has a contract with the user in association with identification information (for example, a telephone number, etc.) used when communicating with the network of the business operator. ing. The UIM card may store business information of a license-unnecessary band business operator. Further, the combination of the license band operator information and identification information is not necessarily limited to the UIM card 26, and may be stored in another storage medium such as a flash memory.

(Display example)
Next, a display example of the type of frequency band displayed by the display control unit 225 will be described.
FIG. 3 is a diagram illustrating a display example of types of frequency bands. The graphics (pictograms) pc11, pc12, and pc13 displayed in FIGS. 3A to 3C are displayed when one or a plurality of frequency bands are all license bands (hereinafter, license band displays). ), A display when the license band and the license-unnecessary band are mixed (hereinafter, display for mixing), and a display when both are the license-unnecessary band (hereinafter, display for the license-unnecessary band). The figures pc11, pc12, and pc13 are all circular, but are filled with different patterns. The fill patterns of the figures pc11, pc12, and pc13 are simple fill, right-bottom-down hatching, and left-bottom-down hatching, respectively. The figures pc11, pc12, and pc13 may be represented by different colors, for example, red, blue, and green, respectively.

  FIGS. 3D to 3F show other examples (figure pc21, pc22, pc23) of the graphic (pictogram) displayed in the upper right part of the display unit 23. FIG. The figures pc21, pc22, and pc23 are a display for a license band, a display for a mixture, and a display for a license-unnecessary band, respectively, and are each composed of four antenna designs. The number of antennas is not limited to four, and may be three or less, or may be five or more. Circles and antennas constituting the figures pc21, pc22, and pc23, respectively, are filled with different patterns. The figures pc21, pc22, and pc23 may be represented by different colors, for example, red, blue, and green.

  FIGS. 3G to 3I show other examples (graphics pc31, pc32, pc33) of graphics (pictograms) displayed in the upper right part of the display unit 23. FIG. The figures pc31, pc32, and pc33 are a display for a license band, a display for a mixture, and a display for a license-unnecessary band, respectively, and each is a quadrangle that represents four antenna designs and characters within the range. The characters represented in the quadrilaterals constituting the figures pc31, pc32, and pc33 are “L” indicating a license band, “L UL” indicating mixing, and “UL” indicating a license unnecessary band. Between the figures pc31, pc32, and pc33, the type of the frequency band is distinguished by characters, so that the fill pattern and color may be the same.

  FIGS. 3J to 3I show other examples (graphics pc41, pc42, and pc43) of graphics (pictograms) displayed in the upper right part of the display unit 23. FIG. The figures pc41, pc42, and pc43 indicate the types and electric field strengths of the four frequency bands CC1 to CC4, respectively. The figure pc41 is composed of four vertical bars arranged in the horizontal direction and a quadrangle surrounding these vertical bars. Note that the quadrangle surrounding the vertical bar may be omitted. The color of each vertical bar indicates the type of each frequency band, and the length indicates the electric field strength. For each vertical bar, the license band and the license-unnecessary band are filled with different patterns, and the longer the electric field strength, the longer it is expressed. Both the frequency bands CC1 and CC4 indicated by the leftmost vertical bar and the rightmost vertical bar are license bands, respectively, and the frequency bands CC2 and CC3 indicated by the second vertical bar from the left end and the second vertical bar from the right end, respectively. Is also a license-free band. Further, it is shown that the electric field strength is highest in the frequency band CC1, and decreases in the order of CC1, CC2, CC4, and CC3.

A graphic pc42 indicates the type and electric field strength of each of the frequency bands CC1 to CC4. The figure pc42 includes four circles, and each circle fill pattern indicates the type of each frequency band, and the size of the circle indicates the electric field strength.
A figure pc43 indicates the type and electric field strength of each of the frequency bands CC1 to CC4. The figure pc43 is composed of four element figures, and the shape of each element figure indicates the type of each frequency band, and the size (area) indicates the electric field strength. An element graphic whose shape is a circle indicates a license band, and an element graphic whose shape is a triangle indicates a license-unnecessary band.
In addition, in the vertical bar of the figure pc41 and the circle of the pc42, the type of the frequency band may be distinguished using a color instead of the fill pattern.

FIG. 4 is a diagram illustrating another display example of frequency band types. Figures (screen edges) fr11, fr12, and fr13 displayed in FIGS. 4A, 4B, and 4C are a license band display, a mixed display, and a license-unnecessary band display, respectively. . The graphics fr11, fr12, and fr13 are all displayed with different line types on the periphery of the display area of the display unit 23. The line types of the figures fr11, fr12, fr13 are a solid line, a broken line, and a one-dot chain line, respectively. The figures fr11, fr12, fr13 may be represented by different colors, for example, red, blue, and green.
As shown in FIG. 4D, the license band display need not necessarily be made. This is because it can be distinguished from the case where the license band and the license-unnecessary band are mixed, and the case where the frequency band is a license-free band.

(Connection control processing mode)
Next, a connection control processing mode by the connection control unit 226 will be described. Among the processing modes, the fixed method is a method of detecting and connecting a certain type of frequency band, for example, a license band, in response to a trigger operation A (described later). The frequency band type detection policy (hereinafter referred to as search type (described later)) may be set based on a user operation.
The toggle method is a method of detecting and connecting a frequency band of a type different from the type of frequency band currently used for communication in response to the trigger operation A. For example, in the case where only the license band is currently connected, the connection control unit 226 detects a license-unnecessary band. In the toggle method, different search types may be cyclically selected every time the trigger operation A is accepted. A set of search types related to patrol, for example, a license / unlicense set, a license / license priority set, and the like may be set based on a user operation.

The simple selection method is a method in which a search type selection screen showing search types that can be set according to the trigger operation A is displayed on the display unit 23, and a frequency band is detected and connected in accordance with the pressed search type. “Pressing” means that an operation signal indicating a position in the display area is input from the operation input unit 24 by the user's operation or the operation.
The detailed setting method is a frequency in which a band information screen showing band information for each frequency band detected by the band detecting unit 221 according to the trigger operation A is displayed on the display unit 23 and a frequency band related to the pressed band information is connected. This is a method determined as a band. The band information includes, for example, the provider name indicated by the provider information described above, the type of frequency band determined based on the provider information, the CA availability information indicated by the system information, the electric field strength of the received signal, and the throughput. . The throughput can be detected based on the information amount of a pilot signal carried as a reception signal in the frequency band by the reception unit 212 by a known speed test, for example.

  The trigger operation A is an operation of pressing a figure indicating the license type displayed by the display control unit 225 as an opportunity for the connection control unit 226 to start connection control. The trigger operation A is, for example, a long press on the graphic (pictogram) shown in FIG. 3 (for example, the duration from the start to the end of contact is 1 second or longer), and an operation of tracing the graphic (screen edge) shown in FIG. The duration from the start to the end of contact is 1 second or more).

  Search types include, for example, license, license priority, unlicense priority, and unlicense. A license is a search type for detecting only a license band. License priority is a search type in which a license band is detected with priority over a license-unnecessary band, and a license-unnecessary band is detected when the detected license band is less than the maximum number of CCs. The maximum number of CCs is the maximum number of CCs (frequency bands) that can be used in CA. Unlicensed priority is a search type for detecting a license band when a license-unnecessary band is detected in preference to a license band and the number of license-unnecessary bands detected is less than the maximum number of CCs. Unlicensed is a search type that detects only a license-unnecessary band.

  Of the processing modes, the operation shortening method is a method of determining a search type according to the locus of the trigger operation B, and detecting and connecting a frequency band according to the determined search type. The trigger operation B is also used as an operation that triggers the connection control unit 226 to start connection control. The trigger operation B is, for example, an operation that is specified while moving a position within a predetermined range of the peripheral edge from the outer edge of the display area of the display unit 23 (for example, a duration from the contact start to the end is 1 second or more).

FIG. 5 is a diagram for explaining the operation shortening method. Arrows tr11 to tr14 shown in the peripheral portions Sd11 to Sd14 of the display unit 23 of the terminal device 20 indicate examples of the locus of the trigger operation B, respectively. In the example illustrated in FIG. 5, a part of the trajectory indicated by the arrows tr <b> 11 to tr <b> 14 is included in the left edge portion Sd <b> 11 of the display unit 23. In FIG. 5, the X coordinate and the Y coordinate are taken in parallel with the short side and the long side of the terminal device 20, respectively, and the right side of the display unit 23 is the positive direction of the X coordinate and the lower side is the positive direction of the Y coordinate.
As indicated by the arrow tr11, the connection control unit 226 determines that the search type is a license when it is determined that the locus of the position indicated by the operation signal input from the operation input unit 24 has an inverted L shape. To do. For example, the connection control unit 226 determines that the difference between the X coordinate indicated by the operation signal at the contact start time and the X coordinate at the contact end time is a predetermined positive difference threshold value (for example, the absolute value is the short side of the display unit 23). And a difference between the Y coordinate at the contact start time and the Y coordinate at the contact end time is a predetermined negative difference threshold (for example, the absolute value is the length of the long side of the display unit 23). If it is smaller than approximately half of the height, it is determined that the shape of the locus is an inverted L shape.

  As indicated by the arrow tr12, the connection control unit 226 performs the search when it is determined that the locus of the position indicated by the operation signal input from the operation input unit 24 has an upward shape (negative direction of the Y axis). The type is determined as license priority. For example, the connection control unit 226 determines that the absolute value of the difference between the X coordinate indicated by the operation signal at the start of contact and the X coordinate at the end of contact is a predetermined positive threshold (for example, the absolute value is the short side of the display unit 23). The difference between the Y coordinate at the start of contact and the Y coordinate at the end of contact is a predetermined negative difference threshold (for example, the absolute value is the long side of the display unit 23). If the length of the trajectory is smaller than approximately half of the length of the trajectory, it is determined that the shape of the trajectory is upward.

  As indicated by the arrow tr13, the connection control unit 226 performs the search when it is determined that the locus of the position indicated by the operation signal input from the operation input unit 24 has a downward shape (the positive direction of the Y axis). The type is determined to be unlicensed. For example, the connection control unit 226 determines that the absolute value of the difference between the X coordinate indicated by the operation signal at the start of contact and the X coordinate at the end of contact is a predetermined positive threshold (for example, the absolute value is the short side of the display unit 23). A threshold of a predetermined positive difference value (for example, the absolute value is the long side of the display unit 23), and the difference between the Y coordinate at the contact start time and the Y coordinate at the contact end time is smaller than approximately 1/10 of the length. If the length of the trajectory is larger than approximately half of the length of the trajectory, it is determined that the shape of the trajectory is downward.

  As indicated by the arrow tr14, the connection control unit 226 determines that the search type is unlicensed when it is determined that the locus of the position indicated by the operation signal input from the operation input unit 24 has an L shape. To do. For example, the connection control unit 226 determines that the difference between the X coordinate indicated by the operation signal at the contact start time and the X coordinate at the contact end time is a predetermined positive difference threshold value (for example, the absolute value is the short side of the display unit 23). The difference between the Y coordinate indicated by the operation signal at the start of contact and the Y coordinate at the end of contact is a predetermined positive difference threshold value (the absolute value of which is the long side of the display unit 23). If it is larger than the length, it is determined that the shape of the locus is L-shaped.

Next, display examples related to other connection control will be described.
FIG. 6 is a diagram illustrating a display example in connection control. FIG. 6A shows an example of the confirmation screen (screen Wd11) used when the fixed method or the toggle method is adopted. The connection control unit 226 displays a confirmation screen on the display unit 23 of the terminal device 20 immediately after detecting the trigger operation A based on the operation signal input from the operation input unit 24. On the screen Wd11, a character string “Do you want to re-cell search? Y / N” is displayed. The connection control unit 226 detects the letter “Y” indicating confirmation of execution of the process based on the operation signal within a predetermined time after the confirmation screen is displayed, and then deletes the confirmation screen and displays the connection process ( (To be described later). The connection control unit 226 detects the character “N”, which means denial of execution of processing based on the operation signal within a predetermined time after the confirmation screen is displayed, or the operation signal within a predetermined time after the confirmation screen is displayed. If there is no input, delete the confirmation screen and do not execute the connection process.

  FIG. 6B shows another example of a confirmation screen (screen Wd12) used when the fixed method or the toggle method is adopted. The screen Wd12 is different from the screen Wd11 in that the displayed characters indicate “Do you want to search for a license band?” And the type of detection target (or priority detection target) “license band”. . Note that, as described above, the connection control unit 226 sets the type of detection target to be constant in the fixed method, and sets the type of detection target between sets of search types that are set every time the trigger operation A is detected in the toggle method. Switch.

  FIG. 6C shows an example of a search type selection screen (screen Wd13) used when the simple selection method is adopted. The connection control unit 226 displays the search type selection screen immediately after detecting the trigger operation A based on the operation signal input from the operation input unit 24. On the screen Wd13, characters “license”, “license priority”, “unlicense priority”, and “unlicense” indicating searchable search types are displayed. The connection control unit 226 selects the search type represented by the position where the press is detected based on the operation signal input from the operation input unit 24. The connection control unit 226 performs connection processing (described later) according to the selected search type.

  FIG. 6D shows an example of a bandwidth information screen used when the detailed setting method is adopted. This band information screen is a screen displayed on the display unit 23 of the terminal device 20, and is a screen representing band information (peripheral cell information) for each frequency band and various buttons. The band information is configured by associating an operator name, a frequency band type (license type), CA availability information (CA), electric field strength, and throughput. The various buttons include a determination button, an end button, and a cancel button. The connection control unit 226 causes the band detection unit 221 to perform cell search immediately after detecting the trigger operation A based on the operation signal input from the operation input unit 24. Band identification section 222 identifies the type of frequency band for each frequency band detected by cell search. The connection control unit 226 forms band information by associating the carrier name indicated by the received signal, the type of frequency band, the CA availability information indicated by the received signal, the electric field strength of the received signal, and the throughput for each detected frequency band. . Thereafter, the connection control unit 226 causes the display unit 23 to display a band information screen including band information for each formed frequency band. The band selection unit 223 selects a frequency band related to the band information represented by the cursor position on the band information screen where the pressing is detected based on the operation signal input from the operation input unit 24. Note that a plurality of frequency bands may be selected by the band selection unit 223, and the band information of the selected frequency band is displayed in a mode (for example, background is added) different from the frequency band that is not selected. Also good.

  When the pressing of the cancel button is detected based on the operation signal, the band selection unit 223 cancels the selection of the frequency band. If it is detected that the end button is pressed based on the operation signal, the connection control unit 226 deletes the displayed band information screen, and the band selection unit 223 cancels the selection of the frequency band. When pressing of the enter button is detected based on the operation signal, the connection processing unit 224 connects to the base station apparatus 10 that performs communication using each frequency band selected by the band selection unit 223.

(Connection control)
Next, connection control according to the present embodiment will be described.
FIG. 7 is a flowchart showing connection control according to the present embodiment.
(Step S <b> 101) The connection control unit 226 detects a trigger operation based on the operation signal input from the operation input unit 24. If it is determined that there is a trigger operation (YES in step S101), the process proceeds to step S102. If the trigger operation is not detected (NO in step S101), the process in step S101 is repeated.
(Step S102) The connection control unit 226 determines the type of the detected trigger operation. When it is determined that the trigger operation is A (step S102A), the process proceeds to step S103. If it is determined that the trigger operation is B (step S102B), the process proceeds to step S104.
(Step S103) The connection control unit 226 starts processing according to the processing mode. In the case of the fixed method, the process proceeds to step S109. If it is the toggle method, the process proceeds to step S105. In the case of the simple selection method, the process proceeds to step S106. If it is a detailed setting method, the process proceeds to step S111. The processing mode in the case of detecting the trigger operation A may be set in the connection control unit 226 in advance, and any processing mode depending on either or both of the locus of the operation related to the trigger operation A and the contact time. May be selectable.

(Step S104) The connection control unit 226 determines that the processing mode is the operation shortening method, and selects a search type. The search type selection process will be described later. Thereafter, the process proceeds to step S108.
(Step S105) The connection control unit 226 determines the type of the currently connected frequency band. If the type of the currently connected frequency band is a license-unnecessary band (step S105 YES), the process proceeds to step S109. If the type of the currently connected frequency band is a license band (NO in step S105), the connection control unit 226 proceeds to step S110.
(Step S106) The connection control unit 226 causes the display unit 23 to display a search type selection screen. Thereafter, the process proceeds to step S107.
(Step S <b> 107) The connection control unit 226 selects a search type for which pressing has been detected from among the search types displayed on the search type selection screen. Thereafter, the process proceeds to step S108.
(Step S108) If the selected search type is license or license priority (YES in Step S108), the connection control unit 226 proceeds to Step S109. If the selected search type is unlicensed or unlicensed (NO in step S108), the connection control unit 226 proceeds to step S110.

(Step S109) The connection control unit 226 sets the data indicating the frequency band of the license-unnecessary band as search exclusion data in the storage unit 25, thereby excluding the license-unnecessary band from the search target. Thereafter, the process proceeds to step S112.
(Step S110) The connection control unit 226 excludes the license band from the search target by setting data indicating the frequency band of the license band in the storage unit 25 as search exclusion data. Thereafter, the process proceeds to step S112.

(Step S111) The control unit 22 executes connection processing 1 (described later), and connects to the frequency band indicated by the operation signal among the detected frequency bands. Thereafter, the process shown in FIG. 7 ends.
(Step S112) The control unit 22 executes connection processing 2 (described later) to connect to an unused frequency band among the detected frequency bands. Thereafter, the process proceeds to step S113.
(Step S113) The connection control unit 226 determines whether or not the frequency band being connected has reached the maximum number of CCs. If the connected frequency band has not reached the maximum number of CCs (YES in step S113), the process proceeds to step S114. If the connected frequency band reaches the maximum number of CCs (NO in step S113), the connection control unit 226 ends the process illustrated in FIG.

(Step S114) The connection control unit 226 determines whether or not there is an unconnected frequency band (candidate cell) among the detected frequency bands. If it is determined that there is (YES in step S114), the process proceeds to step S112. In step S112, another cell search may be omitted. If it is determined that there is not (NO in step S114), the process proceeds to step S115.

(Step S115) If the search type selected or set in the connection control unit 226 is license priority or unlicense priority (YES in Step S115), the process proceeds to Step S116, and if it is license or unlicense (Step S115). S115 NO), the process shown in FIG.
(Step S116) The connection control unit 226 removes the search exclusion data by deleting the search exclusion data. Thereafter, the process proceeds to step S112.

(Search type selection process)
Next, the search type selection process performed in step S104 will be described.
FIG. 8 is a flowchart showing search type selection processing according to the present embodiment.
(Step S201) The connection control unit 226 determines the shape of the operation locus indicated by the operation signal input from the operation input unit 24. If it is determined that the shape is an inverted L shape, the process proceeds to step S202. If it is determined that the shape is upward, the process proceeds to step S203. If it is determined that the shape is downward, the process proceeds to step S204. If it is determined that the shape is L-shaped, the process proceeds to step S205.

(Step S202) The connection control unit 226 selects a license as a search type. Then, it progresses to step S108 (FIG. 7).
(Step S203) The connection control unit 226 selects license priority as the search type. Then, it progresses to step S108 (FIG. 7).
(Step S204) The connection control unit 226 selects unlicensed priority as the search type. Then, it progresses to step S108 (FIG. 7).
(Step S204) The connection control unit 226 selects unlicense as the search type. Then, it progresses to step S108 (FIG. 7).

(Connection process 1)
Next, the connection process 1 performed at step S111 will be described.
FIG. 9 is a flowchart showing the connection process 1 according to the present embodiment.
(Step S301) The band detection unit 221 performs a cell search to detect the frequency band of the cell in which the device is located. Thereafter, the process proceeds to step S302.
(Step S302) The connection control unit 226 determines whether there is an unused frequency band (candidate cell) among the detected frequency bands. If it is determined that there is (YES in step S302), the process proceeds to step S303. If it is determined that there is not (NO in step S302), the process shown in FIG. 9 is terminated.
(Step S303) The connection control unit 226 displays a bandwidth information screen on the display unit 23. Thereafter, the process proceeds to step S304.
(Step S304) Based on the operation signal input from the operation input unit 24, the band selection unit 223 is a band represented at a position where pressing is detected among band information for each frequency band displayed on the band information screen. A frequency band related to information is selected. Thereafter, the process proceeds to step S305.

(Step S305) The connection processing unit 224 connects to the base station apparatus 10 that performs communication using the frequency band selected by the band selection unit 223. Thereafter, the process proceeds to step S306.
(Step S306) The connection control unit 226 determines the type of the connected frequency band. If both are license bands, the process proceeds to step S307. If the license band and the license-unnecessary band are mixed, the process proceeds to step S308. If both are unlicensed bands, the process proceeds to step S309.

(Step S307) The connection control unit 226 causes the display unit 23 to display a license band. Thereafter, the process shown in FIG. 9 ends.
(Step S308) The connection control unit 226 causes the display unit 23 to display a mixed display. Thereafter, the process shown in FIG. 9 ends.
(Step S309) The connection control unit 226 causes the display unit 23 to display a license-unnecessary band. Thereafter, the process shown in FIG. 9 ends.

(Connection process 2)
Next, the connection process 2 performed at step S111 will be described.
FIG. 10 is a flowchart showing the connection process 2 according to the present embodiment.
(Step S401) The band detection unit 221 performs a cell search to detect the frequency band of the cell in which the device is located. However, the band detection unit 221 excludes the frequency band indicated by the search target exclusion data from the cell search target. Thereafter, the process proceeds to step S402.
(Step S402) The connection control unit 226 determines whether or not there is an unused frequency band (candidate cell) among the detected frequency bands. If it is determined that there is (YES in step S402), the process proceeds to step S403. If it is determined that there is not (NO in step S402), the processing shown in FIG. 10 is terminated.
(Step S403) The band identifying unit 222 selects any unused frequency band and identifies the type of the selected frequency band. If it is determined that the type of the frequency band is a license band (YES in step S403), the process proceeds to step S404. If it is determined that it is not a license band (NO in step S403), the process proceeds to step S405.

(Step S404) The connection control unit 226 determines whether or not all of the frequency bands (cells) connected in the terminal device 20 are license bands. If both are license bands (step S404 YES), the process proceeds to step S406. If neither is a license band (NO in step S404), the process proceeds to step S407.
(Step S405) The connection control unit 226 determines whether or not all of the frequency bands (cells) connected in the terminal device 20 are license-free bands. If both are unlicensed bands (YES in step S405), the process proceeds to step S408. If neither is a license-unnecessary band (NO in step S405), the process proceeds to step S407.

(Step S406) The connection control unit 226 causes the display unit 23 to display a license band. The connection processing unit 224 connects to the base station apparatus 10 that performs communication using the frequency band selected by the band selection unit 223. Then, the process shown in FIG. 10 is complete | finished.
(Step S407) The connection control unit 226 causes the display unit 23 to display a mixed display. The connection processing unit 224 connects to the base station apparatus 10 that performs communication using the frequency band selected by the band selection unit 223. Then, the process shown in FIG. 10 is complete | finished.
(Step S408) The connection control unit 226 causes the display unit 23 to display a license-unnecessary band. The connection processing unit 224 connects to the base station apparatus 10 that performs communication using the frequency band selected by the band selection unit 223. Then, the process shown in FIG. 10 is complete | finished.
When the processing mode is the toggle method, the connection processing unit 224 releases (disconnects) the frequency band connected before the trigger operation A is detected.

As described above, the terminal apparatus 20 according to the present embodiment identifies the band type based on the band detection unit 221 that detects the band of the received signal from the base station apparatus 10 and the identification information indicated by the received signal. And a band identification unit 222 for performing Further, the terminal device 20 is connected to the display control unit 225 that displays the type of the band connected to the base station device 10 on the display unit, and the base station device 10 that uses a predetermined type of band according to the operation input. A connection control unit 226.
With this configuration, when CA is being performed, the user can check the type of band in use, and can use different types of frequency bands at arbitrary timings. Communication quality and safety can be improved by stopping the use of a type of band with low communication quality and safety.

Further, the connection control unit 226 determines the type of band to be connected based on the operation input. With this configuration, the user can arbitrarily designate the type of band to be newly used.
Further, the connection control unit 226 determines the type of band according to the operation input mode. With this configuration, the user can designate a desired band type by a simple operation.
In addition, the display control unit 225 displays a graphic having an aspect corresponding to the type of band detected by the band detection unit 221. With this configuration, the user can intuitively grasp the type of band being used.
In addition, the display control unit 225 displays the above-described graphic in a manner corresponding to the communication quality for each band detected by the band detection unit 221. With this configuration, the user can intuitively grasp the communication quality as well as the type of the band being used.

(Modification)
The embodiment of the present invention has been described above with reference to the drawings. However, the specific configuration is not limited to the above-described configuration, and various design changes and the like can be made without departing from the gist of the present invention. Is possible.
For example, one or both of the display unit 23 and the operation input unit 24 may be separate from the terminal device.
When performing a cell search, the band detection unit 221 uses a frequency whose signal quality is better than a preset index of other signal quality (for example, SINR) instead of the electric field strength for each frequency band of the received signal. A band component signal may be detected.
When the fixed method or the toggle method is adopted as the processing mode, the connection control unit 226 may omit displaying the confirmation screen on the display unit 23.

Band information to be displayed on the band information screen is not limited to the information shown in FIG. 6D as long as it can be acquired by the terminal device 20 as a clue to selection such as quality, attribute, etc. for each frequency band. For example, the bandwidth information may include MIMO (Multiple-Input Multiple-Output) availability information. Further, the throughput may include the uplink throughput received from the base station apparatus 10 in addition to the downlink throughput detected by the reception unit 212. When the frequency band related to the band information indicating that CA is possible is selected by the operation, the connection control unit 226 displays the band information related to the selected frequency band and the frequency band where CA is possible, The selection of the frequency band related to the band information may not be performed. In that case, the connection control unit 226 may lower the visibility of other band information (eg, gray out) than the band information related to the frequency band where CA is possible.
In step S402, when the connection control unit 226 determines that there are a plurality of unused frequency bands among the detected frequency bands, the frequency band with higher communication quality, the wider frequency band, and the higher throughput. The frequency band may be selected with priority.

The embodiment described above can also be implemented in the following manner.
(1) A band detection unit that detects a band of a reception signal from a base station device, a band identification unit that identifies a type of the band based on identification information indicated by the reception signal, and a base station device A terminal device comprising: a display control unit that displays a type of a band on a display unit; and a connection control unit that is connected to a base station apparatus that uses a predetermined type of band according to an operation input.

(2) The terminal device according to (1), wherein the connection control unit determines a type of a band to be connected based on the operation input.

(3) The terminal device according to (2), wherein the connection control unit determines the type based on a mode of the operation input.

(4) The terminal device according to any one of (1) to (3), wherein the display control unit displays a graphic having an aspect corresponding to a type of a band detected by the band detection unit.

(5) The terminal device according to (4), wherein the display control unit displays the graphic in a mode according to communication quality for each band detected by the band detection unit.

(6) A communication method in a terminal apparatus, a band detection process for detecting a band of a reception signal from a base station apparatus, and a band identification process for identifying the type of the band based on identification information indicated by the reception signal; A communication control method comprising: a display control process for displaying a type of a band connected to a base station apparatus on a display unit; and a connection control process for connecting to a base station apparatus using a predetermined type of band according to an operation input .

(7) A band detection procedure for detecting a band of a received signal from a base station apparatus in a computer of a terminal apparatus, a band identification procedure for identifying the type of the band based on identification information indicated by the received signal, and a base station apparatus A program for executing a display control procedure for displaying a type of a connected band on a display unit, and a connection control procedure for connecting to a base station apparatus using a predetermined type of band according to an operation input.

In addition, you may make it implement | achieve a part of base station apparatus 10 and the terminal device 20, for example, the control part 22, with a computer. In that case, the program for realizing the control function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read by the computer system and executed.
Moreover, you may implement | achieve part or all of the base station apparatus 10 in the embodiment mentioned above, and the terminal device 20 as integrated circuits, such as LSI (Large Scale Integration). Each functional block of the base station apparatus 10 and a part of the terminal apparatus 20 may be individually made into a processor, or part or all of them may be integrated into a processor. Further, the method of circuit integration is not limited to LSI, and may be realized by a dedicated circuit or a general-purpose processor. In addition, when an integrated circuit technology that replaces LSI appears due to the advancement of semiconductor technology, an integrated circuit based on the technology may be used.

DESCRIPTION OF SYMBOLS 1 ... Communication system, 10 ... Base station apparatus, 20 ... Terminal device, 21 ... Communication part, 211 (21-1 to 211-M) ... Transmission part, 212 (212-1 to 212-M) ... Reception part,
22 ... Control unit, 221 ... Band detection unit, 222 ... Band identification unit, 223 ... Band selection unit, 224 ... Connection processing unit, 225 ... Display control unit, 226 ... Connection control unit, 23 ... Display unit, 24 ... Operation input Part, 25 ... storage part, 26 ... UIM card

Claims (5)

A band detector for detecting a band of a received signal from the base station device;
A band identification unit for identifying whether the license type of the band is a license band or a license-unnecessary band based on identification information indicated by the received signal;
A display control unit for displaying the license type of the band connected to the base station device on the display unit;
A connection control unit for connecting to a base station apparatus using a predetermined type of band according to an operation input;
With
The display control unit displays a search type selection screen on the display unit when detecting an operation for displaying the license type,
The search type selection screen detects the first search type for detecting only the license band and the license band in preference to the license-unnecessary band, and the detected license band is sufficient for the maximum number of bands used in carrier aggregation. If there is not, the second search type for detecting the license-unnecessary band, the license-unnecessary band is detected in preference to the license band, and if the detected license-unnecessary band is less than the maximum number of bands, the license band is detected. A display of a third search type and a fourth search type for detecting only license- unnecessary bands,
The band detection unit detects an unused band in which the device is located according to a search type related to a display selected by an operation,
The connection control unit is a terminal device that is connected using the band detected by the band detection unit. The display control unit displays a bandwidth information screen on the display unit when detecting an operation for displaying the license type,
The terminal apparatus according to claim 1, wherein the band information screen includes a display of carrier aggregation availability information indicating whether carrier aggregation is received from the base station apparatus. The terminal device according to claim 1, wherein the band detection unit excludes a band indicated by search target exclusion data stored in advance in a storage unit.   The terminal device according to any one of claims 1 to 3, wherein the display control unit displays a graphic having a mode corresponding to a license type of a band detected by the band detection unit.   The terminal device according to claim 4, wherein the display control unit displays the graphic in a mode corresponding to communication quality for each band detected by the band detection unit.

Images