WO2016043023A1

WO2016043023A1 - Base station apparatus, terminal apparatus, processing method, processing apparatus, program, and recording medium

Info

Publication number: WO2016043023A1
Application number: PCT/JP2015/074420
Authority: WO
Inventors: 宏道留場; 中村　理; 淳悟後藤; 若原　史郎; 泰弘浜口
Original assignee: シャープ株式会社
Priority date: 2014-09-19
Filing date: 2015-08-28
Publication date: 2016-03-24
Also published as: JP2017208581A

Abstract

The objective of the present invention is to achieve a more efficient measurement report control when using an unlicensed band. To attain this objective, the present invention takes an approach as follows. That is, a base station apparatus of the present invention is a second base station apparatus that can communicate with a first base station apparatus and that applies a communication scheme, which is applied to a frequency band that can be exclusively used, to a frequency band that cannot be exclusively used, whereby the second base station apparatus can communicate at least with a first terminal apparatus and a second terminal apparatus different from the first terminal apparatus. Further, when the second base station apparatus reports, to the first base station apparatus, a reception quality measured by the first terminal apparatus and acquired from the first terminal apparatus, the second base station apparatus also reports, to the first base station apparatus, identification information for identifying the first terminal apparatus and identification information for identifying the second terminal apparatus.

Description

Base station apparatus, terminal apparatus, processing method, processing apparatus, program, and recording medium

The present invention relates to a base station device, a terminal device, a processing method, a processing device, a program, and a recording medium.

The third generation partnership project (3rd Generation Generation) is the evolution of wireless access methods and wireless networks for cellular mobile communications (hereinafter referred to as "Long Term Term Evolution (LTE)" or "Evolved Universal Terrestrial Radio Access (EUTRA)"). Partnership Project: 3GPP) In LTE, multicarrier transmission is used as a wireless communication (downlink) communication method from a base station device (also referred to as evolvedeNode B or eNB) to a terminal device (also referred to as mobile station device, User Equipment or UE). The orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing: OFDM) scheme is used. In addition, as a communication method of radio communication (uplink) from the terminal device to the base station device, an SC-FDMA (Single-Carrier Frequency Division Multiple Access) method that is single carrier transmission is used.

Further, in 3GPP, a wireless access method and a wireless network (hereinafter referred to as “Long Term Evolution-Advanced (LTE-A)”) or “Advanced” that realizes higher-speed data communication using a frequency band wider than LTE. Evolved Universal Terrestrial Radio Access (A-EUTRA) ”) is under study. LTE-A has backward compatibility with LTE, that is, the LTE-A base station apparatus performs radio communication simultaneously with both LTE-A and LTE terminal apparatuses, and LTE- A terminal device is required to be able to perform radio communication with both LTE-A and LTE base station devices, and LTE-A is considering using the same channel structure as LTE. .

In LTE-A, a frequency band having the same channel structure as LTE (hereinafter referred to as “Component Carrier: CC”) is aggregated and used as a single frequency band (broadband frequency band). (Frequency band aggregation methods: Carrier aggregation, Spectrum aggregation, Frequency aggregation, etc.) are being studied. Specifically, in communication using the frequency band aggregation method of FDD (FrequencyplexDivision Duplex), a downlink channel is transmitted for each downlink component carrier, and an uplink channel is transmitted for each uplink component carrier. The In other words, the frequency band aggregation method is a technology in which a base station device and a plurality of terminal devices simultaneously transmit and receive a plurality of data and a plurality of control information using a plurality of channels and a plurality of component carriers in the uplink and the downlink. It is. In other words, the component carrier refers to a frequency band in which communication resources in the component carrier are allocated to a plurality of terminal devices at the same time, and carrier aggregation is a communication method in which a plurality of component carriers that can be used independently are used simultaneously. It is.

In communication using the frequency band aggregation method, the base station apparatus uses the RRC signal (Radio Resource Control Signal) for the downlink component carrier (DLCC) and the uplink component carrier (ULCC) used for communication to the terminal apparatus. It is proposed to set and use. Further, an activation command (activation command) indicating a downlink component carrier to be used for downlink communication from the set DLCC is set as PDCCH (Physical Downlink Control Channel) or MAC (Medium Access Control) CE (Control Element). It has been proposed to notify using. (Non-Patent Document 1)

However, the shortage of communication resources due to the recent increase in transmission data capacity and the increase in the number of subscribers is becoming prominent. For example, not only the image data and moving image data increase as data transmitted and received by the user, but also the image quality itself has been improved, that is, one file of image data and moving image data has increased in capacity, and the amount of data to be transmitted and received The number of communication resources used by a single user must be increased. On the other hand, if attention is paid to the number of LTE and LTE-A subscribers, the number of users who change from W-CDMA or GSM (registered trademark) to LTE or LTE-A has increased dramatically in recent years. As described above, a shortage of communication resources due to an increase in communication data capacity and an increase in the number of users is serious. Therefore, the use of an unlicensed band has been attracting attention in recent years.

Telecom operators (sometimes referred to as operators or carriers) provide subscribers with commercial communications using a legitimately authorized frequency band. For example, a base station of a telecommunications carrier allocates a part of the frequency band that can be used for private use to each subscriber (terminal) as a communication resource. When there are a plurality of terminals, a part of the frequency band can be allocated to the plurality of terminals as a communication resource, and communication can be simultaneously provided to the plurality of terminals. The terminal communicates with other terminals and communication devices via the base station using the allocated communication resource. The frequency band permitted to be used for private use may be referred to as a frequency band that can be used for private use, or simply a private communication band, or a license band. In other words, a frequency band that can be occupied by an authorized carrier for providing communication to a plurality of terminals is simply referred to as a frequency band that can be used for private use, or an occupied frequency band or licensed band. The In other words, a frequency band that can be privately used by a specific authorized carrier can be called a license band. In the present specification, it is hereinafter referred to as a license band.

On the other hand, it can be used without permission for private use and cannot be used for private use, but cannot be used for private use. It may also be called a frequency band, or simply a non-occupied frequency band or an unlicensed band. In other words, a frequency band in which there is no private carrier that can be used for private use, or a frequency band that is not permitted for private use by any carrier or anyone can be called an unlicensed band. . In the present specification, it is hereinafter referred to as an unlicensed band. For example, the unlicensed band corresponds to a frequency band used for a wireless LAN or the like, for example, a 2.4 GHz band or a 5 GHz band normally used for connection of a personal computer and a printer in accordance with the IEEE 802.11n specification. Each of these frequency bands is called an unlicensed band frequency band or a frequency band belonging to the unlicensed band. That is, the 2.4 GHz band is one of the frequency bands belonging to the unlicensed band, and the 5 GHz band is also one of the frequency bands belonging to the unlicensed band. Hereinafter, the 2.4 GHz band and the 5 GHz band are simply referred to as 2.4 GHz and 5 GHz. The wireless LAN standard naturally includes other standards such as IEEE802.11a, b, g, and ac. Further, the unlicensed band may be a millimeter wave band (for example, about 30 GHz to 300 GHz).

Such an unlicensed band is a frequency band that anyone can use. Therefore, a usage method in which a specific user occupies for a long time is not desirable. A user who uses an existing communication method such as IEEE802.11n and a user who does not use the communication method must share a single communication band for communication. In particular, it is desirable to use an unlicensed band that does not obstruct communication of a user who uses an existing communication method, such as IEEE802.11n, more than necessary. In other words, it is desirable to terminate communication using the unlicensed band as soon as possible.

However, in order not to disturb the IEEE 802.11n specification, it may be necessary to follow the IEEE 802.11n specification. Specifically, the IEEE802.11n specification limits the time (frame length) in which continuous communication is possible and may be shorter than the frame length in LTE-A. Therefore, when communicating using an unlicensed band based on LTE-A, it is desirable to use a frame conforming to the IEEE 802.11n specification. This indicates that the amount of data that can be transmitted at a time is reduced, which is an obstacle to the necessity of terminating communication using an unlicensed band as soon as possible.

Further, a terminal in accordance with the LTE-A standard is instructed by the base station to report measurement of a neighboring cell (transmission signal from the neighboring base station apparatus). Depending on the configuration of the terminal and the neighboring base station device to be measured, measures such as temporarily stopping communication with the base station using the unlicensed band (for example, generating a gap) are necessary for frequency measurement of adjacent cells. .

However, the temporary interruption of communication conflicts with the fact that the unlicensed band communication ends as soon as possible. In other words, although communication in the unlicensed band must be terminated as soon as possible, the unlicensed band has a limitation on the frame length, which not only reduces the communication speed than usual, but also increases the The temporary interruption of communication due to the measurement report further reduces the communication speed, which greatly hinders the end of unlicensed band communication as soon as possible.

The present invention has been made in view of the above points, and an object of the present invention is to propose efficient control that does not hinder existing communication when using an unrun license band.

(1) In order to achieve the above object, the present invention has taken the following measures. That is, at least the first terminal device can be communicated with a frequency band that can be communicated with the first base station apparatus and applied to a frequency band that can be used privately, and applied to a frequency band that cannot be used privately; A second base station apparatus capable of communicating with a second terminal apparatus different from the first terminal apparatus, the reception quality measured by the first terminal apparatus, obtained from the first terminal apparatus When reporting reception quality to the first base station apparatus, identification information for identifying the first terminal apparatus and identification information for identifying the second terminal apparatus are also reported to the first base station apparatus. It is characterized by.

(2) Moreover, the terminal device of the present invention can communicate with the first base station device, and applies a communication method applied to a frequency band that can be used privately to a frequency band that cannot be used privately. A terminal apparatus that communicates with a second base station apparatus capable of communication, and when receiving information indicating a measurement report instruction from the first base station apparatus, information indicating that the information has been received 2 base station apparatus is notified.

(3) Further, the processing method in the base station apparatus of the present invention is a frequency band that can communicate with the first base station apparatus and cannot use the communication method applied to the frequency band that can be used privately. And a processing method in a second base station apparatus capable of communicating with at least the first terminal apparatus and a second terminal apparatus different from the first terminal apparatus, wherein the second base station apparatus Identification information for identifying the first terminal device when reporting the reception quality measured by the first terminal device and acquired from the first terminal device to the first base station device; Identification information for identifying the second terminal apparatus is also reported to the first base station apparatus.

(4) In addition, the processing method in the terminal device of the present invention can communicate with the first base station device, and a communication method applied to a frequency band that can be used privately is used in a frequency band that cannot be used privately. A processing method in a terminal device that communicates with a second base station device that can communicate by applying, when the terminal device receives information indicating a measurement report instruction from the first base station device, Information indicating that the information has been received is notified to the second base station apparatus.

(5) In addition, the processing device implemented in the base station apparatus of the present invention can communicate with the first base station apparatus and uses a communication method applied to a frequency band that can be used privately. A processing apparatus mounted on a second base station apparatus capable of communicating with at least a first terminal apparatus and a second terminal apparatus different from the first terminal apparatus by applying to a frequency band that cannot be performed, Identification information for identifying the first terminal device and the first information when the reception quality measured by the first terminal device and obtained from the first terminal device is reported to the first base station device. The identification information for identifying the second terminal device is also reported to the first base station device.

(6) Furthermore, the processing method in the terminal device of the present invention is capable of communicating with the first base station device and uses a communication method applied to a frequency band that can be used for private use in a frequency band that cannot be used for private use. A processing device implemented in a terminal device that communicates with a second base station device that can communicate by applying, when receiving information indicating a measurement report instruction from the first base station device, the information The second base station apparatus is notified of the information indicating that the terminal apparatus is received to the terminal apparatus.

(7) Furthermore, the program according to the present invention can be applied to a frequency band that is communicable with the first base station apparatus and applied to a frequency band that can be used for private use. A program executed in a second base station apparatus capable of communicating with a first terminal apparatus and a second terminal apparatus different from the first terminal apparatus, wherein the second base station apparatus is the first terminal apparatus When the reception quality measured by the terminal device and obtained from the first terminal device is reported to the first base station device, the identification information for identifying the first terminal device and the second information The identification information for identifying the terminal device is also reported to the first base station device.

(8) Further, the recording medium in the present invention is characterized in that the program executed in the second base station apparatus is recorded.

(9) Further, the program according to the present invention can communicate with the first base station apparatus and applies a communication method applied to a frequency band that can be used for private use to a frequency band that cannot be used for private use. When the terminal device receives information indicating a measurement report instruction from the first base station device, the information is executed by the terminal device communicating with the second base station device capable of The second base station apparatus is notified of the information indicating that the terminal apparatus is received to the terminal apparatus.

(10) Further, the recording medium according to the present invention is characterized in that the program executed in the terminal device is recorded.

The purpose is to provide an efficient measurement report process in order to continue the communication using the unlicensed band stably and more efficiently when using the unlicensed band. The control is proposed. As a result, when using the unlicensed band, communication using the unlicensed band can be continued stably with more efficient or more flexible control, and higher-speed communication can be realized.

1 is a conceptual diagram of a wireless communication system according to the present invention. It is a schematic block diagram which shows the structure of the base station apparatus 3 of this invention. It is a schematic block diagram which shows the structure of the mobile station apparatus 1 of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention. It is a flowchart of the measurement report process at the time of use of the unlicensed band of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention. It is a flowchart of the measurement report process at the time of use of the unlicensed band of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention. It is a flowchart of the measurement report process at the time of use of the unlicensed band of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention. It is a flowchart of the measurement report process at the time of use of the unlicensed band of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention. It is a flowchart of the measurement report process at the time of use of the unlicensed band of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention. It is a figure which shows the procedure of the measurement report process at the time of use of the unlicensed band of this invention.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a measurement report setting method and a control method when using an unlicensed band will be described. Thereafter, the communication method applied to the license band for the unlicensed band, for example, the use of LTE-A for communication between the base station apparatus and the terminal apparatus is used as the cell of the unlicensed band. Say (or just use it as an unlicensed band). Next, a base station device, a terminal device, or an access point positioned as one of the base station devices will be described.

FIG. 1 is a conceptual diagram of a wireless communication system according to the first embodiment of the present invention. In FIG. 1, the wireless communication system includes a terminal device 1, a terminal device 1-1, a base station device 3, a base station device 3-1, and an access point 11.

In the present embodiment, the terminal device 1 is described as being a mobile phone, but may be a communication circuit portion in another device. For example, the terminal device 1 may be a communication device that communicates with the base station device 3 by being connected to or built in a personal computer, a printer, or a copier. It may be a communication device that is connected to or built in an automobile or car navigation system and communicates with the base station apparatus 3. Furthermore, it may be a communication device that communicates with the base station device 3 by being connected to or built in an electric appliance such as a refrigerator or an air conditioner.

In FIG. 1, for simplicity of explanation, only the terminal device 1 and the terminal device 1-1 arranged in the vicinity thereof are illustrated as terminal devices. As described above, the communication system can include at least one terminal device, and three or more terminal devices may be included. Similarly, the base station apparatus 3 includes not only the base station apparatus 3 but also a plurality of base station apparatuses, that is, includes at least one base station apparatus and may be composed of three or more base station apparatuses. In FIG. 1, only the base station device 3-1 and the access point 11 arranged in the vicinity of the base station device 3 are representatively shown. Hereinafter, the base station apparatus 3-1 and the access point 11 are assumed to have the same configuration as the base station apparatus 3, and detailed description thereof is omitted.

The base station apparatus 3 may be a base station (hereinafter referred to as a macro cell base station) that has jurisdiction over a macro cell that can provide a communication service for a wide area, or a small cell base station that can provide communication only in a very small area ( Or a small base station), or a CSG (Closed Subscriber Group) cell base station designed to provide a communication service to a specific user. In other words, for example, it may be a local base station or a home base station. Thereafter, these are collectively referred to as non-macrocell base stations for the macrocell base stations. In this case, the base station device 3 may function as a macro cell base station, and the base station device 3-1 may function as a non-macro cell base station, or neither the base station device 3 nor the base station device 3-1 It may function as a macro cell base station. Since both the macro cell base station and the non-macro cell base station communicate with the terminal device 1 and the terminal device 1-1 using the license band, they may be referred to as license band base stations. Further, it is assumed that the access point 11 is a non-macrocell base station and an unlicensed band base station (described later). On the other hand, the terminal device 1 and the terminal device 1-1 are equivalent, and the description of the terminal device 1 can be applied to the terminal device 1-1, and the description of the terminal device 1-1 is also applicable to the terminal device 1.

In FIG. 1, the base station device 3 communicates with the terminal device 1 using a license band. Here, the cell of the license band refers to a serving cell used for communication with the terminal device 1, and is simply referred to as a cell here, and is described as a cell 5, a cell 7, or the like. The cell 7 is used as a primary cell (described later), and the cell 5 is used as a secondary cell (described later). Here, the cell 5 and the cell 7 may have different frequency bands. The cell is used when the base station apparatus 3 manages the frequency band to be used or the communication with the terminal apparatus 1 using the frequency band when the base station apparatus 3 communicates with the terminal apparatus 1 or another terminal apparatus. It is one unit.

Each cell may be configured with a frequency band used for uplink communication and a frequency band used for downlink communication, or may be configured only with a frequency band used for downlink communication. Also good. These frequency bands, that is, the frequency band constituting the cell (or the frequency band used for the cell) are called component carriers, and the frequency band used for uplink communication is the uplink component carrier (hereinafter referred to as ULCC). And a frequency band used for downlink communication is a downlink component carrier (hereinafter referred to as DLCC). For example, the cell 7 that is the primary cell includes the ULCC 7 and the DLCC 7, and the cell 5 that is the secondary cell includes the ULCC 5 and the DLCC 5.

The base station apparatus 3 sets one of the set cells 5 and 7 as a primary cell. The primary cell is a cell used for initial access for establishing a wireless connection from a state in which the terminal device 1 has not established a wireless connection with the base station device 3. In this embodiment, it is assumed that the cell 7 is set as the primary cell. On the other hand, a cell that is not a primary cell is referred to as a secondary cell. In FIG. 1, the secondary cell is assumed to be cell 5.

In FIG. 1, two cells are used, and one primary cell and one secondary cell are used. However, although the number of cells to be used may be three or more, since there is one primary cell as described above, two or more secondary cells may be configured. Alternatively, only the cell 7 may be used, that is, only the primary cell may be used and the secondary cell may not be used. In other words, only one primary cell may be used, or one primary cell and at least one secondary cell may be used. In other words, the base station device 3 and the terminal device 1 may be configured to communicate with each other using the frequency band of one or more license bands as the frequency band to be used, or two or more license bands are used. The base station device 3 and the terminal device 1 may be configured to communicate with each other. In FIG. 1, as described above, a configuration using one primary cell and one secondary cell will be described.

In addition, the cell in this specification can also be comprised only from DLCC, especially a secondary cell does not have ULCC as mentioned above. For example, a cell 9 (not shown) may be used instead of the cell 5 or together with the cell 5, and the cell 9 may include only the DLCC 9 without the ULCC. That is, the secondary cell only needs to include at least DLCC. In the figure, the present invention is described by taking the case where the cells 7 and 5 are used as described above, that is, both the primary cell and the secondary cell include ULCC and DLCC.

In FIG. 1, there is a wireless LAN access point 11 in the vicinity of the terminal device 1. The access point 11 can communicate with other devices such as a personal computer and a printer (not shown) by CSMA / CA (Carrier Sense Multiple Access with Collision Avoidance) communication according to IEEE 802.11n, for example, and functions as a wireless router. Both can communicate. The communication band used when the access point 11 functions as the above wireless router may be 2.4 GHz or 5 GHz, for example, or may be 60 GHz which is a millimeter wave band. The frequency band is not limited to these, and there is no particular limitation as long as communication with the terminal device 1 is possible using a frequency band belonging to an unlicensed band other than the license band.

The access point 11 is connected to the Internet by a wired connection, for example, by an optical fiber. In addition, it is not limited to a wired connection, You may connect to the internet by wireless connections, such as mobile WiMAX (IEEE802.16e). Further, for example, the access point 11 can communicate with the terminal device 1 selectively using the

frequency bands

15 and 17 or both. The access point 11 can also use a frequency band 16 (not shown). Here, the

frequency bands

15, 16, and 17 correspond to the frequency bands belonging to the unlicensed band.

In FIG. 1, it is assumed that the access point 11 is configured to use three frequency bands 15, 16 (not shown) and a frequency band 17 of an unlicensed band. The access point 11 may be configured to be able to communicate with a device such as the terminal device 1 or another personal computer using only one frequency band, or selectively or simultaneously using two or three or more frequency bands. It may be configured to communicate.

Further, the access point may be configured to communicate with a plurality of devices by using a part of available unlicensed bands. For example, in FIG. 1, the access point 11 uses the frequency band 15 and the frequency band 17. The terminal device 1 may be configured to communicate with, for example, a personal computer using the frequency band 16. Furthermore, the terminal device 1 can wirelessly communicate with the personal computer or a printer having a wireless interface directly according to the 802.11n specification using a frequency band such as the frequency band 15. Further, the terminal device 1 may directly communicate with another device, for example, a personal computer or a printer, using the frequency band of the unlicensed band, for example, the

frequency bands

15, 16 and 17, without going through the access point 11. .

The access point 11 can communicate with a plurality of terminal devices including the terminal device 1 and the terminal device 1-1. Although only the terminal device 1 and the terminal device 1-1 are shown in FIG. 1, this is for the purpose of briefly explaining the invention, and the present invention is not limited to this. The access point 11 only needs to be able to communicate with at least two terminal devices, the terminal device 1 and the terminal device 1-1, and may communicate with only the terminal device 1 or with only the terminal device 1-1. 1 may communicate with many terminal devices including the terminal device 1-1.

The access point 11 can communicate with the base station device 3. The communication form is not particularly limited, and any communication form may be used. For example, as described above, it may be configured to be able to communicate indirectly with the base station device 3 via the Internet, or may be configured to be able to communicate directly with the base station device 3 via a dedicated line. The dedicated line may be a wired line or a wireless line. In the present embodiment, it is assumed that the access point 11, the base station device 3, and the base station device 3-1 communicate with each other via a radio channel. Here, the access point 11 may perform CSMA / CA communication when communicating with the terminal device 1 or the like using the frequency bands 15 to 17 which are unlicensed bands, or according to the LTE-A communication method. Communication may be performed. Here, it is assumed that the access point 11 performs communication according to the LTE-A communication method when communicating with the terminal device 1 or the terminal device 1-1. A base station that communicates with a terminal device such as the terminal device 1 or the terminal device 1-1 by applying a license band communication method (for example, LTE-A) to the unlicensed band is referred to as an unlicensed band base station. That is, the access point 11 can also function as an unlicensed band base station.

FIG. 2 is a block diagram showing that the base station device 3 is constituted by various processing devices. The base station apparatus 3 communicates with the terminal apparatus 1 by applying the LTE-A communication method to the license band, that is, functions as a license band base station. Therefore, FIG. 2 extracts and describes only typical circuit portions necessary for communication with the terminal device 1 using the LTE-A communication method, or circuit portions directly related to the present invention. Parts or circuits that do not directly contribute to the present invention and are not essential for the description of the present invention, such as a power circuit, a power switch, an operation unit, a display unit, and a pilot lamp are omitted.

Furthermore, although only one circuit unit is described, a configuration in which a plurality of circuit units are used together may be used. For example, a configuration in which a plurality of antennas are used may be used, and FIG. 2 shows only one for the sake of simplicity.

As illustrated, the base station apparatus 3 includes an upper layer processing circuit unit 301, a control circuit unit 303, a reception circuit unit 305, a transmission circuit unit 307, and a transmission / reception antenna 309. Further, the upper layer processing circuit unit 301 includes a radio resource control circuit unit 3011. The reception circuit unit 305 includes a decoding circuit unit 3051, a demodulation circuit unit 3053, a demultiplexing circuit unit 3055, and a wireless reception circuit unit 3057. The transmission circuit unit 307 includes an encoding circuit unit 3071, a modulation circuit unit 3073, a multiplexing circuit unit 3075, and a wireless transmission circuit unit 3077. Further, the upper layer processing circuit unit 301 may include a timer T2 and a timer T4 which will be described later.

The upper layer processing circuit 301 includes a medium access control (MAC: Medium Access Control) layer, a packet data integration protocol (Packet Data Convergence Protocol: PDCP) layer, a radio link control (Radio Link Control: RLC) layer, a radio resource control ( Radio (Resource Control: RRC) layer processing. The upper layer processing circuit unit 301 generates information to control the receiving circuit unit 305 and the transmitting circuit unit 307 and outputs the information to the control circuit unit 303. The upper layer circuit unit 3011 included in the upper layer processing circuit unit 301 generates downlink data (transport block), RRC signal, MAC CE arranged in downlink PDSCH (Physical-Downlink-Control-Channel), or an upper node And output to the transmission circuit unit 307. The radio resource control circuit unit 3011 manages various setting information of the terminal device 1. For example, the radio resource control circuit unit 3011 manages an identifier (RNTI) such as assigning C-RNTI (Cell Radio Network Temporary Identifier) to the terminal device 1.

The radio resource control circuit unit 3011 manages cells set in the terminal device 1. The radio resource control circuit unit 3011 sets DLCC and ULCC used for communication in each of the terminal device 1 and the terminal device 1-1 or another terminal device (not shown), and uses RRC signals to control information necessary for this setting. The control information is output to the transmission circuit unit 307 at the same time as controlling the transmission circuit unit 307 via the control circuit unit 303 so as to notify (hereinafter, control information).

The radio resource control circuit unit 3011 includes a cell set to be used for communication with the terminal device 1 (DLCC and ULCC or DLCC only) and a cell set not to be used for communication (ULCC, DLCC, or (DLCC only). Furthermore, the radio resource control circuit unit 3011 can also control the component carrier resources in units of cells or in units of DLCCs or ULCCs. These controls can be notified to the terminal device 1 using, for example, RRC signaling.

The radio resource control circuit unit 3011 allocates a part of the set frequency band to the terminal device 1 as a communication resource, and communicates with the terminal device 1 using the allocated communication resource. The allocated communication resource is notified to the terminal device 1 by the base station using DLCC. In this application, there are roughly two types of communication resources. The first is a frequency band belonging to the license band, and the second is a frequency band belonging to the unlicensed band. In particular, a communication resource assigned from a part of the license band is called a first communication resource, and a communication resource assigned a part or all of the unlicensed band is called a second communication resource. In other words, the radio resource control circuit unit 3011 allocates a part of the license band as the first communication resource to the terminal apparatus 1 or allocates a part of the unlicensed band as the second communication resource. 1 is controlled to be used for communication with 1. Here, the base station apparatus 3 can communicate with the terminal apparatus 1 using the first communication resource, the second communication resource, or both as communication resources.

Note that, as described above, the radio resource control management unit 3011 can perform control to set a cell to be used for communication and not to be used for communication. In these controls, a cell (at least one or both of DLCC and ULCC) can be used or not used as cell control.

The radio resource control circuit unit 3011 sets a DLCC in which control information related to a cell used for communication is arranged in the terminal device 1, and notifies the terminal device 1 of control information related to this setting using an RRC signal. The transmission circuit unit 307 is controlled via The radio resource control circuit unit 3011 controls the transmission circuit unit 307 via the control circuit unit 303 so as to notify the terminal device 1 of control information by PDCCH or MAC CE.

The control circuit unit 303 generates a control signal for controlling the reception circuit unit 305 and the transmission circuit unit 307 based on the control information from the upper layer processing circuit unit 301. The control circuit unit 303 outputs the generated control signal to the reception circuit unit 305 and the transmission circuit unit 307, and controls the reception circuit unit 305 and the transmission circuit unit 307.

The receiving circuit unit 305 separates, demodulates, and decodes the received signal received from the terminal device 1 via the transmission / reception antenna 309 according to the input from the control circuit unit 303, and outputs the decoded information to the upper layer processing circuit unit 301. . The radio reception circuit unit 3057 converts the uplink signal received via the transmission / reception antenna 309 into a baseband signal by orthogonal demodulation (down-conversion), removes unnecessary frequency components, and appropriately maintains the signal level. The amplification level is controlled so that the quadrature demodulated analog signal is converted into a digital signal.

The radio reception circuit unit 3057 removes a portion corresponding to a guard interval (Guard Interval: GI) from the converted digital signal. The radio reception circuit unit 3057 performs fast Fourier transform (FFT Fourier Transform: FFT) on the signal from which the guard interval is removed, extracts a frequency domain signal, and outputs the signal to the demultiplexing circuit unit 3055.

The demultiplexing circuit unit 3055 separates the signal input from the radio reception circuit unit 3057 into signals such as PUCCH (Physical Uplink Control Channel), PUSCH (Physical Uplink Shared Channel), and uplink reference signal. This separation is performed based on radio resource allocation information that is an uplink grant that is determined in advance by the radio resource control circuit unit 3011 by the base station apparatus 3 and notified to each terminal apparatus 1. The demultiplexing circuit unit 3055 outputs the separated uplink reference signal to a channel estimation measurement circuit unit (not shown).

The demodulation circuit unit 3053 performs inverse discrete Fourier transform (Inverse Discrete Fourier Transform: IDFT) of PUSCH, obtains modulation symbols, and performs BPSK, QPSK, 16QAM, 64QAM, 256QAM, etc. for each of the modulation symbols of PUCCH and PUSCH. The received signal is demodulated using a modulation scheme that is determined in advance or that is notified in advance by the own device to each of the terminal devices 1 using an uplink grant. Here, BPSK indicates Binary Phase Shift Keying, QPSK indicates Quadrature Phase Shift Keying, and 16QAM indicates Quadrature Amplitude Modulation. Demodulation circuit unit 3053 compensates for the propagation paths of PUCCH and PUSCH using the propagation path estimation value input from the channel estimation measurement circuit section (not shown).

The decoding circuit unit 3051 encodes the demodulated encoded bits of PUCCH and PUSCH in a predetermined encoding method, or a coding rate at which the device itself notifies the terminal device 1 in advance with an uplink grant. And the decoded uplink data and the uplink control information are output to the upper layer processing circuit unit 301.

The transmission circuit unit 307 generates a downlink reference signal in accordance with the input from the control circuit unit 303, and receives various control information input from the higher layer processing circuit unit 301, such as downlink control information, downlink data, and control information. It encodes and modulates, multiplexes PHICH (Physical HARQ Indicator Channel), PDCCH, PDSCH, and downlink reference signal, and transmits the signal to the terminal device 1 via the transmission / reception antenna 309.

The encoding circuit unit 3071 is configured to control the control information and downlink data input from the higher layer processing circuit unit 301 with a predetermined encoding method such as block encoding, convolutional encoding, and turbo encoding, or a radio resource. Encoding is performed using the encoding method determined by the control circuit unit 3011.

The modulation circuit unit 3073 modulates the coded bits input from the coding circuit unit 3071 with a modulation scheme determined in advance by the radio resource control circuit unit 3011 such as BPSK, QPSK, 16QAM, 64QAM, and 256QAM. .

The multiplexing circuit unit 3075 multiplexes each modulated channel and the generated downlink reference signal.

The radio transmission unit 3077 performs inverse fast Fourier transform (inverse Fastier Transform: IFFT) on the multiplexed modulation symbol and the like to generate an OFDM symbol, adds a CP (Cyclic Prefix) to the generated OFDM symbol, and baseband The digital signal is generated. Further, the radio transmission unit 3077 converts the baseband digital signal into an analog signal, removes excess frequency components by a low-pass filter, up-converts to a carrier wave frequency, amplifies the power, and outputs to the transmission / reception antenna unit 309 for transmission. .

Each circuit unit described above is configured so that each function as described above and each function described below are realized by a dedicated circuit like a circuit device such as ASIC (Application Specific Integrated Circuit). It may be configured only with a circuit. Alternatively, at least a part of each function is configured by a general-purpose processing circuit, and a part of the processing or function executed by each circuit unit is realized by software using the general-purpose circuit. It may be configured to be realized by both. Furthermore, it may be configured to be realized by software using only a general-purpose processing circuit without using a dedicated circuit unit. In particular, when a general-purpose processing circuit is used, a dedicated general-purpose circuit unit may be arranged in each of the above-described circuit units. However, one general-purpose processing unit that performs all the processes or a plurality of general-purpose processing units that execute some processes It may be provided to execute each processing described above.

The access point 11 can perform CSMA / CA communication as described above, but communicates with the terminal device 1 and the like by applying the LTE-A communication method to the same frequency band, that is, an unlicensed band base station. Therefore, it has a basic base station apparatus structure necessary as a license band base station. For this purpose, the base station apparatus 3 has the same configuration as shown in FIG. However, since the same parts and circuits as those required for CSMA / CA communication may be shared, this is not an essential configuration, but a description thereof is omitted here.

In the base station apparatus 3 having the configuration as shown in FIG. 2, for example, when the base station apparatus 3 and the access point 11 communicate with each other, since the communication is performed via the wireless line as described above, the communication with the terminal apparatus 1 is performed similarly. The antenna 309, the reception circuit unit 305, and the transmission circuit unit 307 perform communication. Accordingly, when the receiving circuit unit 305 in the base station apparatus 3 or the access point 11 receives a signal (control information, measurement result, notification, report, etc.) transmitted from another base station apparatus, for example, the base station apparatus 3-1. Describes that the base station apparatus 3 or the access point 11 simply receives the above series of reception operations. Similarly, when the transmission circuit unit 307 in the base station apparatus 3 or the access point 11 transmits a signal (control information, measurement result, notification, report, etc.) to another base station apparatus, for example, the base station apparatus 3-1, Hereinafter, it is described that the base station apparatus 3 or the access point 11 transmits simply.

FIG. 3 is a schematic block diagram showing that the terminal device 1 of the present invention is constituted by various processing devices. FIG. 3 shows only typical circuit portions necessary for communication with the base station apparatus 3 or circuit portions directly related to the present invention and necessary for explanation of the present invention. For example, a power supply circuit, a power switch, an operation unit, a display unit, a pilot lamp, and the like that do not directly affect the present invention are omitted. Since the terminal device 1 performs communication by applying the license band communication method to the unlicensed band, the configuration of FIG. 3 is the same as the configuration used when communicating with the base station device 3 using the license band. The following explanation will be given.

Furthermore, although only one circuit portion is shown, a configuration in which a plurality of circuit portions are used together may be used. For example, a configuration in which a plurality of antennas are used may be used, and only one is shown in FIG. 3 to simplify the description.

As illustrated, the terminal device 1 includes an upper layer processing circuit unit 101, a control circuit unit 103, a receiving circuit unit 105, a transmitting circuit unit 107, and a transmitting / receiving antenna 109. The upper layer processing circuit unit 101 includes a radio resource control circuit unit 1011. The reception circuit unit 105 includes a decoding circuit unit 1051, a demodulation circuit unit 1053, a demultiplexing circuit unit 1055, a radio reception circuit unit 1057, and a channel estimation measurement circuit unit 1058. The transmission circuit unit 107 includes an encoding circuit unit 1071, a modulation circuit unit 1073, a multiplexing circuit unit 1075, and a wireless transmission circuit unit 1077. Further, the upper layer processing circuit unit 101 may include timers T1 and T3 described later.

The upper layer processing circuit unit 101 outputs the uplink data, the RRC signal, and the MAC CE generated by the user operation to the transmission circuit unit 107. The upper layer processing circuit unit 101 performs processing of a medium access control layer, a packet data integration protocol layer, a radio link control layer, and a radio resource control layer. The upper layer processing circuit unit 101 generates information for controlling the receiving circuit unit 105 and the transmitting circuit unit 107 based on downlink control information received by the PDCCH, and outputs the information to the control circuit unit 103. . The radio resource control circuit unit 1011 included in the upper layer processing circuit unit 101 manages various setting information of the own device. For example, the radio resource control circuit unit 1011 manages identifiers such as C-RNTI. Also, the radio resource control circuit unit 1011 generates information arranged in each uplink channel and outputs the information to the transmission circuit unit 107.

The radio resource control circuit unit 1011 manages cells according to the notification using the RRC signal notified from the base station apparatus 3. Further, the radio resource control circuit unit 1011 can control component carriers in units of cells or in units of DLCCs or ULCCs. As described above, the management of the cell includes a use state or a non-use state, more specifically, activation or deactivation or connection establishment or release control for each cell or ULCC or DLCC.

The control circuit unit 103 generates a control signal for controlling the reception circuit unit 105 and the transmission circuit unit 107 based on information from the upper layer processing circuit unit 101. The control circuit unit 103 outputs the generated control signal to the reception circuit unit 105 and the transmission circuit unit 107 to control the reception circuit unit 105 and the transmission circuit unit 107. The receiving circuit unit 105 separates, demodulates, and decodes the received signal received from the base station apparatus 3 via the transmission / reception antenna 109 according to the control signal input from the control circuit unit 103, and the decoded information is an upper layer processing circuit. Output to the unit 101.

The radio reception circuit unit 1057 converts a downlink signal received via the transmission / reception antenna 109 into a baseband frequency (down-conversion), removes unnecessary frequency components, and maintains the signal level appropriately. The amplification level is controlled to perform quadrature demodulation, and the quadrature demodulated analog signal is converted into a digital signal. The radio reception circuit unit 1057 removes a portion corresponding to the guard interval from the converted digital signal, performs fast Fourier transform (FFT) on the signal from which the guard interval is removed, and extracts a frequency domain signal. And output to the demultiplexing circuit unit 1055.

The demultiplexing unit 1055 demultiplexes the signal acquired from the radio reception circuit unit 1057 into PHICH, PDCCH, PDSCH, and downlink reference signal, and outputs them to the demodulation circuit unit 1053. Further, demultiplexing section 1055 outputs the separated downlink reference signal to channel measuring section 1058.

The demodulation circuit unit 1053 compensates for the propagation path of PHICH, PDCCH, and PDSCH from the estimated value of the propagation path input from the channel measurement unit 1059. Also, the PHICH is demodulated by the BPSK modulation method and output to the decoding circuit unit 1051. The decoding circuit unit 1051 decodes the PHICH addressed to itself, and outputs the decoded HARQ indicator to the upper layer processing circuit unit 101. Demodulation circuit unit 1053 demodulates the PDCCH using the QPSK modulation method, and outputs the result to decoding circuit unit 1051. The decoding circuit unit 1051 attempts blind decoding of the PDCCH, and outputs the decoded downlink control information and the RNTI included in the downlink control information to the upper layer processing circuit unit 101 when the blind decoding is successful. .

The demodulation circuit unit 1053 demodulates the PDSCH using the modulation scheme notified by downlink resource assignment (Resource assignment, scheduling information) such as QPSK, 16QAM, 64QAM, and 256QAM, and outputs the result to the decoding circuit unit 1051. To do. The decoding circuit unit 1051 performs decoding based on the information regarding the coding rate notified by the downlink control information, and outputs the decoded downlink data (transport block) to the higher layer processing circuit unit 101.

The transmission circuit unit 107 generates an uplink reference signal according to the control signal input from the control circuit unit 103, and encodes and modulates the uplink data (transport block) input from the higher layer processing circuit unit 101. , PUCCH, PUSCH, and the generated uplink reference signal are multiplexed and transmitted to the base station apparatus 3 via the transmission / reception antenna 109. The encoding circuit unit 1071 performs convolutional encoding, block encoding, or spreading encoding on the uplink control information input from the higher layer processing circuit unit 101, and performs uplink grant on the uplink data. Turbo coding is performed based on the information relating to the coding rate notified in (1). The modulation circuit unit 1073 uses a modulation method in which the encoded bits input from the encoding circuit unit 1071 are notified by downlink control information such as BPSK, QPSK, 16QAM, and 64QAM, or a modulation method predetermined for each channel. Modulate.

The wireless transmission circuit unit 1077 performs inverse fast Fourier transform (Inverse Fourier Transform: IFFT) on the multiplexed signal. Subsequently, the radio transmission circuit unit 1077 performs SC-FDMA modulation, adds a CP to the SC-FDMA modulated SC-FDMA symbol, generates a baseband digital signal, and converts the baseband digital signal to The signal is converted into an analog signal, converted into a high-frequency signal (up-conversion), excess frequency components are removed, power is amplified, and output to the transmission / reception antenna 109 for transmission.

When the terminal device 1 having the configuration as shown in FIG. 3 receives a signal (control information, measurement result, notification, report, etc.) transmitted from the base station device 3-1, for example, the series of reception operations described above are performed. Hereinafter, it is described that the terminal device 1 simply receives. Similarly, when the terminal device 1 transmits a signal (control information, measurement result, notification, report, or the like) to a base station device, for example, the base station device 3 or the access point 11, the above series of transmission operations is simply performed thereafter. It is described that the device 1 transmits.

Each of the circuit sections described above is configured only by a circuit that is set so that each function is realized by a dedicated circuit, such as a circuit device such as an ASIC. May be. Alternatively, at least a part of each function is configured by a general-purpose processing circuit, and a part of the processing or function executed by each circuit unit is realized by software using the general-purpose circuit. It may be configured to be realized by both. Furthermore, it may be configured to be realized by software using only a general-purpose processing circuit without using a dedicated circuit unit. In particular, when a general-purpose processing circuit is used, a dedicated general-purpose circuit unit may be arranged in each of the above-described circuit units. However, one general-purpose processing unit that performs all the processes or a plurality of general-purpose processing units that execute some processes It may be provided to execute each processing described above.

Next, the measurement report method used in the terminal device using the unlicensed band in this embodiment will be described. In the present embodiment, the base station device 3 that is the first base station device is different from the terminal device 1 that is the first terminal device with respect to the own station or a base station around the own station (in this embodiment, Information (measurement report instruction) indicating that a measurement report (described later) of another base station apparatus 3-1) different from the access point 11 is instructed is transmitted. The terminal device 1 measures the base station device 3-1 as the third base station device in accordance with the measurement report instruction, reports the measurement result to the base station device 3, and accesses the second base station device. The report contents of point 11 are notified. The access point 11 notifies or reports the report content to another terminal device which is the second terminal device, for example, the terminal device 1-1. Thereafter, when a measurement report instruction is issued from the base station apparatus 3 to the terminal apparatus 1-1, the terminal apparatus 1-1 receives the instruction, and the terminal apparatus 1 reports to the base station apparatus 3. The base station apparatus 3 is reported using the report content acquired from the access point 11. That is, the terminal device 1-1 does not perform a measurement operation.

FIG. 4 shows a series of operations of the present embodiment. It is assumed that the downward direction in the figure is a direction indicating the passage of time. First, the base station apparatus 3 transmits a measurement report instruction or information indicating a measurement report instruction to the terminal apparatus 1. For example, when the upper layer processing circuit unit 301 of the base station apparatus 3 determines that the measurement report is necessary, the control circuit 303 is instructed to generate information indicating the measurement report instruction, and the information is transmitted to the antenna 309 by the transmission circuit unit 307. Is transmitted to the terminal device 1 via. The information may be transmitted alone, or may be transmitted together with other information in the control information. Here, it is assumed that the control information 42 is transmitted together with other information.

The terminal device 1 receives the control information 42. The reception is received by the reception circuit unit 105 via the antenna 109, and when the upper layer processing circuit unit 101 detects information indicating a measurement instruction, the measurement is performed on another base station device, for example, the base station device 3-1. 44 (measures the signal 43 transmitted from the base station apparatus 3-1), and reports the result 45 to the base station apparatus 3. The measurement may be performed by, for example, a channel estimation measurement circuit unit (1058) which is a reception quality measurement circuit unit in the terminal device 1, or a dedicated circuit unit for reception quality measurement, for example, a reception quality measurement circuit unit (not shown). It may be provided separately and measured. In the following, it will be described that the terminal device 1 simply performs measurement for such reception quality measurement. At the same time as the report 45, the terminal device 1 makes a notification 46 to notify the access point 11 of the measurement result.

Here, the measurement 44 is a measurement of the reception quality of the signal transmitted from the base station apparatus 3-1 or the reception quality of the signal (for example, the reference signal) transmitted from the base station apparatus 3 or the reception quality of both in the present embodiment. If it contains, there will be no limitation in particular. For example, the reception quality may simply be a measured value of electric field strength or power of a received signal (ie, SNR (Signal to Noise power Ratio)), or a measured value including the degree of interference (ie SINR (Signal to Interference)). plus Noise power Ratio)). Hereinafter, it is assumed that the measurement is performed by the base station device 3-1, which is another base station. Although the notification 46 is performed after the report 45 in FIG. 4, the present invention is not limited to this, and the report 45 may be performed after the notification 46 or may be performed simultaneously.

Next, the access point 11 notifies the terminal device 1-1 by including the content of the notification 46 in the notification information 47. Instead of notifying the content of the notification 46, each terminal device may be notified as individual information. For example, the terminal device 1-1 may be notified individually.

Thereafter, when the base station apparatus 3 notifies the terminal apparatus 1-1 of the control information 42-1 indicating the measurement report instruction in the same manner as described above, the terminal apparatus 1-1 displays the content notified by the broadcast information 47. That is, a report 45-1 is made to the base station apparatus 3 based on the report content measured by the terminal apparatus 1 and notified to the base station apparatus 3.

Note that the content of the report 45 and the information format indicating the reception quality included in the notification 46 and the broadcast information 47 may be different. For example, the terminal device 1 may convert the measured reception quality (measurement result) into a reception quality parameter (for example, RSSI) used in another communication system (for example, IEEE802.11n) and include it in the notification 46 to the access point 11. . The access point 11 may notify the acquired measurement result as it is to the terminal device 1-1 and others as the broadcast information 47, or may change and notify using the reception quality parameter used in LTE-A. . The terminal apparatus 1-1 may report the reception quality acquired based on the reception quality parameter used in another communication system as it is in the report 45-1 to the base station apparatus 3, or in LTE-A. Information included in the report 45-1 may be generated by converting into reception quality parameters to be used. However, since the base station apparatus 3 that is the report destination is a license band base station apparatus, it is preferable to convert the report base station apparatus 3 based on the reception quality parameter used in the license band LTE-A and report it to the base station apparatus 3.

The report 45-1 may report the measurement report value of the terminal device 1 to the base station device 3 as it is, or may be a value separately processed, for example, quantized by the terminal device 1-1. The terminal device 1-1 may directly acquire the parameter for the quantization from the base station device 3. Alternatively, the terminal device 1 may be acquired from the base station device 3, the terminal device 1 may notify the access point 11, and the access point 11 may further notify the terminal device 1-1. This notification may be performed in a form incorporated in the notification 46, may be included in the notification information 47, or may be notified separately from the notification 46 and the notification information 47. That is, the parameter may be indirectly notified from the base station device 3 to the terminal device 1. Alternatively, the base station apparatus 3 may notify the access point 11 and further notify the terminal apparatus 1-1.

In the control as described above, the terminal device 1-1 can make a measurement report without measuring the base station device 3-1. This is because the terminal device connected to or connectable to the access point 11 as in this embodiment is limited to a very narrow range due to the characteristics of the access point 11 and the permitted output power. This is because the reception quality of the terminal device connected to the access point 11 is almost the same because it is in a stopped state without moving substantially.

In the present embodiment, the following processing may be added. Using the notification information 47 or separately from the notification information 47, the access point 11 notifies or notifies a value indicating the validity period of the report content 45 of the terminal device 1. In other words, this value is the value of the timer T1 that manages that the report content (reception quality) is valid. The access point 11 may notify the value, but may be notified individually from the base station apparatus 3 or included in the broadcast information. Alternatively, the base station apparatus 3 may notify the access point 11, and the access point 11 may notify this value to the terminal apparatus 1-1.

FIG. 5 shows the operation of the terminal device 1-1 when the timer is used. The control information 42 to the notification information 47 are the same as in FIG. The terminal device 1-1 that has received the broadcast information starts the timer T1 (timer start 51) when it detects that the broadcast information includes the content of the report made by the terminal device 1, that is, has received the broadcast information 47. ). Thereafter, when the control information 52-1 including the measurement report instruction is acquired from the base station apparatus 3, if the timer T1 has not expired and is running, the above report content is reported to the base station apparatus 3 (Report 55). -1). Here, it is assumed that the value of the timer T1 is acquired from the base station apparatus 3 in advance, but a configuration in which the value is acquired from the access point 11 in advance may be used. Alternatively, it may be included in the notification information 47. In this way, by managing the report contents, that is, the valid period of the reception quality by the timer, the report contents can be easily managed, and a configuration in which unnecessary old report contents are not used can be achieved. On the other hand, when the timer has expired, the terminal device 1-1 receives the signal from the base station device 3-1, performs measurement, and reports the result to the base station device 3.

FIG. 6 shows a processing flow of the terminal device 1-1. First, the terminal device 1-1 receives information (control information 52-1) instructing a measurement report (S61). Subsequently, the terminal device 1-1 confirms whether the timer T1 is running or the timer T1 has expired (S62). Hereinafter, after the timer is started or restarted, the timer is not stopped and has not expired. The timer is running, the timer is running, or the timer is running. If the timer T1 is running (if the timer T1 has not expired), the measurement report content reported by the other terminal device 1 acquired in advance by the broadcast information 47 is transmitted to the base station device 3. (Report 55-1 is made. S63). In S62, if the timer is not running, that is, if the timer T1 has expired or the timer T1 has not started, the terminal device 1-1 receives the signal of the base station device 3-1. Measurement is performed (S64), and the result is transmitted to the base station apparatus 3 (S65). Here, in the measurement of S64, if necessary, a gap is requested to the access point 11, and the measurement using the gap is performed.

The report 55-1 may report the measurement report value of the terminal device 1 to the base station device 3 as it is, or may be a value separately quantized by the terminal device 1-1. The terminal device 1-1 may directly acquire the parameter for the quantization from the base station device 3. Alternatively, the terminal device 1 may be acquired from the base station device 3, and the terminal device 1 may notify the access point 11 and further notify the terminal device 1-1. This notification may be performed in a form incorporated in the notification 46, may be included in the notification information 47, or may be notified separately from the notification 46 and the notification information 47. That is, the parameter may be indirectly notified from the base station device 3 to the terminal device 1. Alternatively, the base station apparatus 3 may notify the access point 11 and further notify the terminal apparatus 1-1.

In the present embodiment, it is described that the measurement result is reported only when the measurement report is instructed. However, the present invention is not limited to this. For example, the present embodiment can be applied to a case where measurement values are periodically reported. For example, when the terminal apparatus 1-1 is instructed to perform periodic measurement reports, the terminal apparatus 1-1 may transmit the report content acquired in advance to the base station apparatus 3. In this case, the same measurement result will be reported, but due to the characteristics of the unlicensed band, the terminal devices using the unlicensed band are very close to each other and do not move at high speed. Therefore, the measured value does not change greatly in a short time, and the problem does not easily occur. Further, when performing regular reporting, the processing from S62 to S63 or S65 in FIG. 6 is applied, that is, the same measurement result may be reported while the timer T1 does not expire, or the timer T1 expires. Until the timer T1 expires, the same measurement result may be reported, and when the timer T1 expires, the measurement may be performed and the content different from the content reported until the timer T1 expires may be reported. In this case, the terminal device 1-1 reports the newly measured result to the base station device 3 (report 45-1 (not shown)) and notifies the access point 11 of the new measurement result (notification). 46-1 (not shown) is executed). Thereafter, the access point notifies the new measurement result as broadcast information (notifies broadcast information 47-1 (not shown)). The terminal device 1-1 starts the timer T1 again by the notification information 47-1.

In the present embodiment, since the report is performed using the existing measurement value as described above, the gap necessary for the measurement, the procedure for generating the gap, or the measurement itself can be unnecessary or minimized. Furthermore, it is possible not only to avoid using measurements that are older than necessary, but also to simplify the necessary procedures.

(Second Embodiment)
In the first embodiment, a terminal device that has received a measurement report instruction performs measurement and reports, or another terminal device reports only, but in this embodiment, reporting is performed from the access point 11. .

FIG. 7 shows the measurement report processing in this embodiment. Control information 42 to notification 46 are the same as in FIG. Here, the base station apparatus 3 gives a measurement report instruction to the terminal apparatus 1-1 using the control information 42-1. When the terminal device 1-1 (upper layer processing circuit unit 101) detects the measurement report instruction, the terminal device 1-1 notifies the access point 11 using the transmission circuit 107 (notification 71). When the access point 11 receives the notification, the access point 11 uses the transmission circuit unit 307 to report 72 to the base station device 3 based on the report content already acquired from the terminal device 1 by the notification 46. In this way, measurement using the gap is not required for the terminal apparatus 1-1, and uplink resources for measurement reports from the terminal apparatus 1-1 to the base station apparatus 3 can be reduced. Here, the notification 71 is information indicating that the measurement report instruction has been received from the base station apparatus 3, and the reception quality measured by the terminal apparatus 1 that is another terminal apparatus with respect to the access point 11 is transmitted to the base station apparatus 3. Information to request to report.

The report 72 is reported from the access point 11 to the base station apparatus 3 as a report result (reception quality) of the terminal apparatus 1-1. As a method of reporting as a report value of the terminal device 1-1, there are the following methods. For example, the identification information of the terminal device 1-1 may be notified to the base station device 3 together with the reception quality using an existing interface between base station devices. As the identification information, for example, C-RNTI assigned from the base station apparatus 3 may be used, other identifiers (for example, NAS-ID (Non-Access-Stratum-Identification)), or IMSI recorded on a SIM (Subscriber-Identity Module) card. Information unique to the terminal device 1-1 such as (International Mobile Subscriber Identity) may be used. The information and identifier specific to the terminal device 1-1 may be included in the notification 71 and sent from the terminal device 1-1, or may be sent from the terminal device 1-1 in advance.

The report 72 may report the measurement report value of the terminal device 1 to the base station device 3 as it is, or may be a value separately quantized by the access point 11. The parameter for quantization may be directly acquired by the access point 11 from the base station apparatus 3. Alternatively, the terminal device 1 may be acquired from the base station device 3 and the terminal device 1 may be indirectly notified to the access point 11. This notification may be performed in a form incorporated in the notification 46. That is, the parameter may be included in the notification 46 and notified. Alternatively, the access point 11 may be notified separately from the notification 46. Alternatively, the parameter may be notified to the terminal device 1-1, included in the notification 71, and notified to the access point 11. That is, the access point 11 may be notified indirectly from the base station apparatus 3 via the terminal apparatus 1-1.

Here, although it is assumed in FIG. 7 that the access point 11 has already acquired the report contents, the following configuration is also possible. When the access point 11 receives the notification 71 from the terminal device 1-1, the access point 11 determines whether or not the access point 11 has acquired the measurement report content from the other terminal device 1, that is, the access point 11 can transmit the report 72. It is determined whether or not. If the access point 11 determines that the report 72 can be transmitted, the report 72 is transmitted to the base station apparatus 3. Conversely, when the access point 11 determines that the report 72 is not possible, the access point 11 notifies the terminal device 1-1 to measure the reception quality and report the measurement result to the base station device 3. Is notified to the terminal device 1-1 (not shown).

FIG. 8 shows another example in the present embodiment. The difference from FIG. 7 is that notification information 81 is added to the processing of FIG. The broadcast information 81 includes information indicating that the access point 11 already holds the measurement report content or that the measurement report to the base station apparatus 3 is possible. Based on the notification information 81, the terminal device 1-1 can determine that the report 72 can be requested by sending a notification 71 to the access point 11. On the other hand, if the broadcast information 81 has not been received, it is determined that the notification 71 cannot be sent to the access point 11 and the report 72 cannot be requested, the base station apparatus 3-1 is measured, and the result is Report to station device 3.

FIG. 9 is a flowchart showing the processing of the terminal device 1-1 described in FIG. When the terminal device 1-1 detects the measurement report instruction 42-1 (S91), it determines whether or not the access point 11 can transmit the report 72 (S92). This is the same as determining whether or not the notification information 81 is received, that is, whether or not the access point 11 has acquired the measurement report content from another terminal device 1. When the terminal device 1-1 determines that the access point 11 can transmit the report 72, the terminal device 1-1 notifies the access point 11 of a notification 71 for requesting the report 72 (S93). Conversely, if the terminal device 1-1 determines that the report 72 is not possible, it measures the reception quality itself (S94) and reports the measurement result to the base station device 3. Here, a notification 82 is made to the access point 11 (not shown) as in the operation of the terminal device 1 of FIG.

FIG. 10 shows another example in the present embodiment. In FIG. 10, the following processing is added to FIG. A timer T <b> 2 that manages the reception quality, that is, the validity period of the content of the report 45 reported to the base station device 3, which is the content measured by the terminal device 1, is used. Except for the timer start 101, it is the same as FIG. The access point 11 that has received the notification 46 from the terminal device 1 starts the timer T2 (timer start 101). Thereafter, when the notification 71 is received from the terminal device 1-1 that has acquired the control information 42-1 including the measurement report instruction from the base station device 3, the access point 11 determines that the timer T2 has not expired, that is, the timer T2 Is running, the above-mentioned report content, that is, report 72 is sent to the base station apparatus 3. In this way, by managing the effective period of the reception quality (report content) by the timer, it is possible to easily manage the report content, and it is possible to adopt a configuration that does not use report content that is older than necessary.

On the other hand, if the timer is not running, that is, if the timer has expired or if the timer has not started, the access point 11 measures the reception quality by itself with respect to the terminal device 1-1 and bases the measurement result on The terminal device 1-1 is notified of NACK 103, which is information indicating a notification instructing to report to the station device 3 (not shown). The terminal device 1-1 that has received the NACK 103 receives the signal from the base station device 3-1, performs measurement, and reports the result to the base station device 3. Further, the report result is transmitted to the access point 11 as a notification 102 (not shown). The access point 11 starts the timer T2 again when receiving the notification 102. As the NACK 103, parameters (for example, gap information and parameters) necessary for the measurement by the terminal device 1-1 may be used as the NACK 103.

FIG. 11 shows the processing of the access point 11 in FIG. First, the access point 11 receives the notification 71 from the terminal device 1-1 (S111). Next, it is confirmed whether the timer T2 has expired (confirms whether the timer T2 is running). If it has not expired (if it is running), a report 72 is transmitted to the base station apparatus 3. On the other hand, if it is not running (if timer T2 has expired or timer T2 has not started), NACK 103 is transmitted to terminal device 1-1.

FIG. 12 shows another example in the present embodiment. In FIG. 10, the terminal device 1-1 is configured to transmit a notification 71 to the access point 11 when receiving the control information 42-1 indicating that a measurement report is instructed, whereas in FIG. -1 does not immediately send the notification 71 when the broadcast information 42-1 is received, but holds whether or not the access point 11 can report 72, or obtains valid report contents (reception quality). The notification 71 is transmitted as necessary. For example, in FIG. 12, the notification information 121 is transmitted at the same time as the access point 11 starts the timer 101, or immediately before or immediately after that. The broadcast information 121 indicates that the access point 11 has acquired valid report content (reception quality). Alternatively, it can be said that the user has valid report contents (reception quality) or that the timer T2 has started.

In FIG. 12, the transmission of the notification information 121 is executed after the timer T2 is started. However, the present invention is not limited to this. Even if the notification information 121 is transmitted before the start of the timer T2, the notification information 121 is simultaneously transmitted with the start of the timer T2. May be sent.

Here, the value of the timer T2 may be determined by the access point 11 or may be a value notified from the base station apparatus 3. When notified from the base station apparatus 3, the base station apparatus 3 may directly notify the access point 11. Alternatively, it is included in the control information 42 or separately included in the notification information and notified to the terminal device 1. The terminal device 1 is included in the notification 46 simultaneously with the measurement result of the base station device 3-1 and indirectly notified to the access point 11. It may be a form that

When the terminal device 1-1 receives the control information 42-1 after acquiring the notification information 121, the terminal device 1-1 transmits a notification 71 to the access point 11. When the access point 11 receives the notification 71, the access point 11 reports 72 the above report contents to the base station apparatus 3 if the timer T2 has not expired (timer T2 is running). In this way, by managing the validity period of the report contents or the reception quality by the timer, the report contents can be easily managed, and the report contents that are older than necessary can be used. The notification information 121 may also be transmitted to the terminal device 1.

On the other hand, when the timer has expired, the access point 11 is information indicating a notification instructing the terminal device 1-1 to measure the reception quality itself and report the measurement result to the base station device 3. NACK 103 is notified to the terminal device 1-1 (not shown). The terminal device 1-1 that has received the NACK 103 receives the signal from the base station device 3-1, performs measurement, and reports the result to the base station device 3. Further, the report result is transmitted to the access point 11 as a notification 102 (not shown). The access point 11 starts the timer T2 again when receiving the notification 102.

Further, when the terminal device 1-1 does not receive the broadcast information 121 when it receives the control information 42-1, the terminal device 1-1 receives the signal of the base station device 3-1 and performs measurement. The result is reported to the base station apparatus 3. Further, the report result is transmitted to the access point 11 as a notification 102 (not shown). When the access point 11 receives the notification 102, the access point 11 starts the timer T2 again and notifies the notification information 121 to another terminal device, for example, the terminal device 1. The notification information 121 may also be sent to the terminal device 1-1.

FIG. 13 describes another process in the present embodiment. 13 is the same as FIG. 12 except for timer expiration 131, notification information 132, measurement 133, and notification 134. As in FIG. 12, the access point 11 receives the notification 46 and starts the timer T2 (timer start 101). Then, the notification information 121 is transmitted simultaneously with the timer start 101, or immediately before or after the timer start 101.

Thereafter, at the same time as the timer T2 expires or immediately after the timer T2 expires, the access point 11 notifies the information indicating that the timer T2 has expired (notification information 132). This notification information 132 is notified to the terminal device 1, the terminal device 1-1, and others (only the terminal device 1-1 is shown in the figure).

The operation of the terminal device 1-1 in FIG. 13 will be described. When the terminal device 1-1 receives the control information 42-1 after receiving the broadcast information 121 and before receiving the broadcast information 132, the operation is the same as that in FIG. On the other hand, before receiving the broadcast information 121 or after receiving the broadcast information 132, the signal from the base station apparatus 3-1 is received and the measurement 133 is performed, and the measurement result of the measurement 133 is accessed as the notification 134. Notify point 11. The access point 11 reports the measurement result included in the notification 134 to the base station apparatus 3 using a report 72.

FIG. 14 is a flowchart of processing in the terminal device in this case. First, control information 42-1, that is, a measurement report instruction is received (S141). The terminal device 1-1 determines whether or not the access point 11 can report 72 (S142). However, as shown in FIG. 14, this determination can be made based on whether or not the notification information 121 has been received (S142-1) and whether or not the notification information 132 has been received (S142-2). If the report 72 is possible, it is notified that the measurement report instruction has been received from the base station apparatus 3, that is, the notification 71 is sent to the access point (S143). For example, if the notification information 121 is received, but the notification information 132 is not received, that is, if the timer T2 has not expired or is running, it can be determined that the report 72 is possible, and the notification 71 Can be sent. Conversely, if it is determined that the report 72 is not possible, that is, if the broadcast information 121 has not been received or the broadcast information 132 has been received, it is determined that the timer T2 has not started or has already expired. That is, it is determined that it is not running, it can be determined that the report 72 is not possible, the measurement 133 is performed without transmitting the notification 71 (S144), and the measurement result (notification 134) is notified to the access point 11 (S145).

FIG. 15 shows another processing example in the present embodiment. In FIG. 13, the timer is arranged at the access point 11, but in FIG. 15, the timer T3 is arranged at the terminal device 1-1. Except for the notification information 151, the timer start 152, and the timer expiration 153, it is the same as FIG. 13. In FIG. 15, notification information 151 indicating that the access point 11 has received the notification 46 from the terminal device 1 is notified. The notification information may also be notified to the terminal device 1. Furthermore, you may notify each terminal not as alerting | reporting information but as separate information. When receiving the notification information 151, the terminal device 1-1 starts a timer T3 (timer start 152). Thereafter, the timer T3 expires after a certain period of time. The value of the timer T3 may be determined by the access point 11 and notified to the terminal device 1-1 or the like, or may be a value notified from the base station device 3. When notified from the base station apparatus 3, the base station apparatus 3 may directly notify the terminal apparatus 1-1. Alternatively, the access point 11 may be notified, and the access point 11 may indirectly notify the terminal device 1-1 and others.

The operation of the terminal device 1-1 in FIG. 15 will be described. When the terminal device 1-1 receives the control information 42-1 after starting the timer T3 after the notification information 151 is received and before the timer T3 expires, the operation is the same as that in FIG. That is, the notification 71 is transmitted to the access point 11, and the access point 11 makes a report 72. On the other hand, before receiving the broadcast information 151 or after the timer T3 expires, when the control information 42-1 is received, a signal from the base station apparatus 3-1 is received and a measurement 133 is performed. The access point 11 is notified of the measurement result as a notification 134. The access point 11 reports the measurement result included in the notification 134 to the base station apparatus 3 using a report 72.

FIG. 16 is a flowchart of processing in the terminal device in FIG. First, control information 42-1, that is, a measurement report instruction is received (S161). The terminal device 1-1 determines whether or not the access point 11 can report 72. However, this determination can be made based on whether the notification information 151 has been received, whether the timer T3 has started, and whether it has expired, in other words, whether the timer T3 is running (S162). . If the timer T3 is running, it is found that the report 72 is possible, and the measurement report instruction is received from the base station apparatus 3, that is, the notification 71 is notified to the access point as shown in FIG. 12 (S163). ). On the contrary, the timer T3 is started after receiving the notification information 151, but the timer T3 has already expired, or the timer T3 is not started because the notification information 151 has not been received, that is, the timer T3 is running. If not, it can be determined that the report 72 is not possible, the measurement 133 is performed without transmitting the notification 71 (S164), and the measurement result (notification 134) is notified to the access point 11 (S165).

In the present embodiment, since the report is performed using the existing measurement value as described above, the gap necessary for the measurement, the procedure for generating the gap, or the measurement itself can be unnecessary or minimized. Furthermore, it is possible not only to avoid using measurements that are older than necessary, but also to simplify the necessary procedures. Furthermore, uplink communication resources from the terminal apparatus to the base station apparatus can be reduced.

(Third embodiment)
In the second embodiment (for example, FIG. 7), the terminal device 1 that first receives the measurement report instruction from the base station apparatus 3 (the terminal apparatus 1 that has received the control information 42) measures as a response to the measurement report instruction. A report 45 is transmitted to the base station apparatus 3 which is a transmission body of the report instruction, and a notification 46 is given to the access point 11. Thereafter, the other terminal device 1-1 that has received the measurement report instruction from the base station device 3 transmits a notification 71 for requesting the report 72 to the access point 11. On the other hand, in the present embodiment, even the terminal device 1 that first received the control information 42 that is information indicating the measurement report instruction sends a response (report 45) to the measurement report instruction to the base station apparatus 3. Instead, the measurement result is reported to the access point 11, and the access point 11 responds to the base station device 3 instead of the terminal device 1.

FIG. 17 shows one basic example of this embodiment. That is, the base station apparatus 3 notifies the terminal apparatus 1 of control information 42 indicating a measurement report instruction. The terminal device 1 performs the measurement 44 according to the instruction, and reports the measurement result in the notification 46 to the access point 11. The access point 11 that has received the report 46 extracts the measurement result included in the report 46, includes the report 172, and reports it to the base station apparatus 3.

Here, when the access point 11 reports the result of the measurement performed by the terminal device 1 to the base station device 3, the base station device includes the identification information of the terminal device 1, for example, the identifier of the terminal device, in the report 172 at the same time. 3 may transmit a report 172. In such a report, the base station apparatus 3 can clearly identify the measurement result of the terminal apparatus 1, and the report 45 can be omitted, and the uplink resources necessary for the measurement report from the terminal apparatus 1 can be reduced.

Thereafter, when the control information 42-1 indicating the measurement report instruction is notified to the other terminal device 1-1, it is the same as FIG. That is, the terminal apparatus 1-1 transmits a notification 71 to the access point 11, and the access point 11 includes the measurement result of the terminal apparatus 1 in the report 72 and notifies the base station apparatus 3. Here, in the report 72 as well as the report 172, the identifier of the terminal device 1 may be included in the report 72 and transmitted to the base station device 3 together with the measurement result.

The identifier of the terminal device 1 and the terminal device 1-1 transmitted in the report 172 and the report 72 is the same as the identifier notified from the base station device 3 in advance, and the base station device 3 uses the terminal device 1 and the terminal device 1-1. For example, C-RNTI or another identifier may be used. The identifier of the terminal device 1 and the identifier of the terminal device 1-1 may be notified to the access point 11 in advance, or may be included in the notification 46 or the notification 71 and notified to the access point 11.

Alternatively, as an identifier that can be used, in addition to an identifier specified by the base station device 3, for example, NAS ID (Non-Access-Stratum Identification), or IMSI (International Mobile Subscriber) recorded on a SIM (Subscriber Identity Module) card Information unique to the terminal device 1-1 such as (Identity) may be used.

FIG. 18 is a diagram for illustrating another example of the present embodiment. In FIG. 17, the identifier of the terminal device 1 or the identifier of the terminal device 1-1 is notified to the base station device 3 in a report 172 or a report 72. The base station device 3 issues a measurement report instruction for each terminal device, and the access point 11 reports the measurement report value to the base station device 3 instead of the terminal device 1 or the terminal device 1-1 every time a measurement report is made. However, if FIG. 18 is used, the base station apparatus 3 only gives a measurement report instruction first (control information 42), and if the access point 11 performs a report 182 as a response to the measurement report, then the base station apparatus 3 performs measurement for each terminal apparatus. There is no need to issue a report instruction (control information 42-1 in FIG. 17 is unnecessary), and access point 11 does not need to execute the measurement result (report 72 in FIG. 17) for each terminal device.

More specifically, in FIG. 18, a measurement report instruction is given to the terminal device 1 using the control information 42. Thereafter, measurement 44 and report 46 are executed. The steps so far are the same as those in FIG. When the access point 11 is executed by the terminal device 1 and reports the measurement result to the base station device 3 (report 182), the access point 11 is connected to the identifier (for example, C-RNTI-1) of the terminal device 1 and the access point 11. The identifier (for example, C-RNTI-2) of the other terminal device 1-1 is also included in the report 182 and notified. When a terminal device is connected in addition to the terminal device 1 and the terminal device 1-1, the identifier of the terminal device is also notified together with the measurement result by the report 182. In FIG. 18, the measurement result is reported as a measurement result of another terminal device, for example, the terminal device 1-1, by a report 182. Therefore, as shown in FIG. 17, the base station apparatus 3 does not need to notify the control information 42-1 indicating the measurement report instruction as individual information, and does not need to receive the report 72 individually. The base station device 3 can receive the measurement result of the terminal device 1 as the measurement result of the terminal device 1-1 by the report 182. In other words, the measurement results of the other terminal devices can be acquired at the same time by the report 182.

Here, attention is again paid to the present embodiment and the second embodiment. In FIG. 7, when the control information 42 is received, the terminal device 1 performs a report 45 and also performs a notification 46. In FIG. 17, when the control information 42 is received, the terminal device 1 performs the notification 46 without performing the report 45. The configuration of the terminal device 1 may be a configuration capable of implementing either the operation of FIG. 7 or the operation of FIG. If both terminal devices 1 are capable of paying attention to whether or not the report 45 is executed, the operations in FIG. 7 and FIG. 17 are contradictory operations, and thus cannot be performed at the same time. Either one will be selected and implemented. The selection subject may be the terminal device 1 or the base station device 3.

First, the case where the selection subject is the terminal device 1 will be described. The terminal device 1 notifies the control information 42. The terminal device 1 selects whether to perform the report 45 and the notification 46 as shown in FIG. 7 or to perform the notification 46 without performing the report 45 as shown in FIG. As a selection criterion, for example, it is conceivable to use communication quality for the base station device 3. Alternatively, when a gap is necessary for measurement, whether or not the report 45 can be performed with the uplink resource determined based on the control information 42 is determined depending on whether or not the access point 11 can generate the necessary gap. If the report 45 cannot be performed with a predetermined uplink resource, the notification 45 may be performed without forcing the report 45 and the report 172 may be requested to the access point 11. In this case, the terminal apparatus 1 may ignore the predetermined uplink resource that is to perform the report 45. Alternatively, information indicating that a measurement report (report 172) from the access point 11 is separately performed, for example, NACK may be transmitted to the base station apparatus 3. For example, this NACK may transmit nothing to the resource for performing the report 45, or may transmit a virtual measurement result (for example, a measurement result in which all bits are 0 or 1).

Conversely, the base station apparatus 3 may determine which operation of FIG. 7 or FIG. In this case, the control information 42 may be transmitted to the terminal device 1 including information indicating whether the process of FIG. 7 or the process of FIG. The information may be arranged in the control information 42 with an explicit data field. In this case, if 1 is set to 1 bit provided in a part of the control information 42, the report 45 is performed, that is, the procedure of FIG. 7 is executed. If 0 is set, the report 45 is not performed and the process of FIG. It may be configured to indicate that Here, 0 and 1 may be used as opposite meanings.

The terminal device 1 may be notified by an indirect instruction instead of an explicit instruction. For example, when the processing of FIG. 7 is instructed to the terminal device 1, the control information 42 is sent by C-RNTI which is the identifier of the terminal device 1, but when the processing of FIG. 17 is to be executed, together with UC-RNTI It may be sent to the terminal device 1. That is, it may be instructed which one is executed by changing the method of notifying the control information 42 to the terminal device 1. Here, U C-RNTI is a C-RNTI assigned by the base station apparatus 3 to the terminal apparatus 1 exclusively for the unlicensed band, but is not limited to this and may be another identifier. An example is SPS C-RNTI. This SPS C-RNTI is a C-RNTI that is not used for the unlicensed band, and the terminal device 1 can be instructed to operate as shown in FIG. The C-RNTI to be used only needs to be able to determine whether the terminal device 1 should perform the operation of FIG. 7 or FIG. 17, that is, it should be associated with performing the report 45 or not performing the report 45. It is not limited to these C-RNTIs.

(Fourth embodiment)
In any of the above-described embodiments, the measurement result of the base station apparatus 3 is reported to the base station apparatus 3 as a result of measurement by only one terminal apparatus. In the present embodiment, this is reported to the base station apparatus 3 based on the results measured by a plurality of terminal apparatuses.

FIG. 19 shows one example in the present embodiment. First, the base station apparatus 3 notifies the terminal apparatus 1 of control information 42 indicating a measurement report instruction. The terminal device 1 notifies the access point 11 of a notification 191 indicating that a measurement report instruction has been received from the base station device 3 (control information 42 has been received). Subsequently, the access point 11 notifies the terminal device 1 connected to the access point 11 and the notification information 192 for instructing the measurement report to the terminal device 1-1. The notification information 192 is also notified to other terminal devices if there is another terminal device that can be connected to the access point 11 other than the terminal device 1 and the terminal device 1-1.

Here, in order to instruct a measurement report from the access point 11 to each terminal device, the terminal device 1, the terminal device 1-1, or other terminal devices may be notified of information indicating the measurement report instruction as individual information. Good. When individually instructing, since the terminal device 1 has received the control information 42 and already knows that the measurement report instruction has been received from the base station device 3, the terminal device 1 does not notify the terminal device 1 of the information again. May be. In FIG. 19, it is assumed that the notification information 192 is used for notification. The information indicating the measurement report instruction, that is, the broadcast information 192 may include information indicating the instruction from the base station apparatus 3 and indicating the measurement target base station apparatus (for example, the base station apparatus 3-1). it can.

The terminal device 1 and the terminal device 1-1 that have received the notification information 192 perform the measurement 44 and the measurement 44-1, respectively, and execute the report of the result by the report 193 and the report 193-1. Here, since the terminal device 1 knows that it has already received the measurement report instruction from the base station device 3 by receiving the control information 42, it is necessary for the terminal device 1 to perform measurement before receiving the notification information 192. The measurement 44 may be started before the notification information 192 is received.

When the access point 11 receives a plurality of measurement results (reception quality) reports 193 and 193-1, the access point 11 reports one measurement result to the base station apparatus 3 based on the received plurality of measurement results (reception quality). (Reception quality) is generated (generation 195). In the generation of the one report result, a representative value is selected from a plurality of acquired measurement results, and one measurement result indicating the lowest reception quality is selected.

Here, in the generation of the one measurement result, other methods, for example, a method for selecting the highest reception quality, a method for calculating or selecting one measurement result using all the obtained measurement results, for example, an average A method of calculating a value or a method of selecting an intermediate value may be used. In FIG. 19, it is assumed that the measurement result indicating the worst reception quality is selected and reported to the base station apparatus 3.

The access point 11 reports the generated one measurement result to the base station apparatus 3 (report 194). As described in the third embodiment, the report 194 can be reported as a measurement report value of the terminal device 1 by transmitting the identifier including the identifier of the terminal device 1, or the terminal device 1 and the terminal device 1- One or other identifiers of terminal devices that can communicate with the access point 11 can be transmitted.

In this embodiment, the base station apparatus 3 and the access point 11 can grasp the outline of reception quality or reception state of a terminal apparatus that can be connected to the access point 11 (existing in an area where the access point 11 can communicate). Therefore, it is not necessary to separately instruct the measurement report instruction to the terminal device 1 or the terminal device 1-1, and it is not necessary to receive the result, and it is not necessary to allocate a license band resource.

FIG. 20 shows another example in the present embodiment. In FIG. 19, control information 42 indicating a measurement report instruction is transmitted from the base station apparatus 3 to the terminal apparatus 1. In the present embodiment, the measurement report instruction is transmitted to the access point 11 instead of the terminal device. That is, information indicating measurement report instructions for a plurality of terminal devices may be transmitted to the access point 11. Upon receiving the information, the access point 11 transmits information indicating a measurement report instruction to each terminal device 1. In FIG. 20, control information 201 is transmitted from the base station apparatus 3 to the access point 11 instead of the control information 42 in FIG. 19. The subsequent operations of the access point 11, the terminal device 1, and the terminal device 1-1 are the same as those in FIG. As described above, in FIG. 20, the notification 191 indicating that the measurement report instruction is received, which is transmitted from the terminal device 1 to the access point 11 in order to use the control information 201 instead of the control information 42, is not necessary. In FIG. 20, since all the procedures related to measurement reporting are offloaded from the license band to the unlicensed band, signaling using the license band is not required at all, and the problem related to insufficient resources of the license band is solved. .

In the above embodiments or individual examples, other embodiments or other examples may be combined. For example, FIG. 17 may be combined with the control using the timer shown in FIGS. 10 to 16 or the control when the timer expires. Alternatively, the report 72 reported from the access point 11 in FIGS. 7 to 16 may be transmitted to the base station apparatus 3 including the identifier of the terminal apparatus 1-1.

Alternatively, in FIG. 19 or FIG. 20, the base station apparatus 3 may be configured to provide a timer T4 to manage a period in which the measurement results acquired from the access point 11 are valid and not use measurement results that are older than necessary. it can. That is, if the timer T4 is running, the already obtained measurement result can be used, but if the timer T4 is running, the control information 42 or the control information 201 is used to obtain a new measurement result. May be.

Further, in each of the above embodiments, when the terminal device 1 or the terminal device 1-1 notifies the access point 11 of the measurement result using the unlicensed band, or from the access point 11 to the terminal device 1 or the terminal device 1- When the measurement result is notified to 1, the measurement result may be converted by an index according to, for example, 802.11n and notified to the access point 11. Alternatively, the measurement result may be generated according to an index according to LTE-A, which is a license band communication method, and notified to the access point 11.

For example, when the terminal device 1, the terminal device 1-1, or the access point 11 notifies the base station device 3 of the measurement result processed according to the unlicensed band index, the unlicensed band index is followed. It may be reported to the base station apparatus 3 based on the measurement result. Alternatively, the terminal device 1, the terminal device 1-1, or the access point 11 may convert the measurement result into a license band (LTE-A) index and report it to the base station device 3.

In addition, you may make it implement | achieve the terminal device 1 in each embodiment mentioned above, and a part of base station apparatus 3 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. The “computer system” referred to here is a processing device (general-purpose processing device) capable of executing a computer system or a program built in the terminal device 1 or the base station device 3, such as an OS or a peripheral device. Includes hardware, firmware, etc.

The “computer-readable recording medium” refers to a storage device such as a flexible disk, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” is a medium that dynamically holds a program for a short time, such as a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line, In this case, a volatile memory inside a computer system that serves as a server or a client may be included that holds a program for a certain period of time. Further, the program may be for realizing one circuit part of the function described above, and may be capable of realizing the function described above in combination with a program already recorded in the computer system. .

Further, the terminal device 1 and the one circuit unit of the base station device 3 in the above-described embodiment, or the entire circuit unit may be realized as an LSI that is typically an integrated circuit. Each functional block of the terminal device 1 and the base station device 3 may be individually formed into chips, or one circuit unit or all circuit units may be integrated into a chip. 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 progress in semiconductor technology, an integrated circuit based on the technology can also be used.

As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to the above, and various design changes and the like can be made without departing from the scope of the present invention. It is possible to

This international application claims priority based on Japanese Patent Application No. 2014-190867 filed on September 19, 2014. The entire contents of Japanese Patent Application No. 2014-190867 are hereby incorporated by reference. Included in international applications.

DESCRIPTION OF SYMBOLS 1 Terminal device 1-1 Terminal device 3 Base station device 3-1 Base station device 5 Cell 7 Cell 9 Cell 11 Access point 15 Frequency band 16 Frequency band 17 Frequency band 101 Upper layer processing circuit unit 103 Control circuit unit 105 Receiving circuit unit 107 Transmission Circuit Unit 109 Transmission / Reception Antenna 301 Upper Layer Processing Circuit Unit 303 Control Circuit Unit 305 Reception Circuit Unit 307 Transmission Circuit Unit 309 Transmission / Reception Antenna 1011 Radio Resource Control Circuit Unit 1051 Decoding Circuit Unit 1053 Demodulation Circuit Unit
1055 Demultiplexing circuit section
1057 Wireless receiving circuit section
1058 Channel estimation measurement circuit unit 1071 Coding circuit unit
1073 Modulation circuit section
1075 Multiplex circuit
1077 Wireless transmission circuit section
3011 Radio resource control circuit unit 3051 Decoding circuit unit
3053 Demodulation circuit
3055 Demultiplexing circuit section
3057 Wireless reception circuit unit 3071 Coding circuit unit
3073 modulation circuit section
3075 Multiplexer section
3077 Wireless transmission circuit unit

Claims

A communication method that is communicable with the first base station apparatus and applied to a frequency band that can be used for private use is applied to a frequency band that cannot be used for private use, and at least the first terminal apparatus, A second base station device capable of communicating with a second terminal device different from the terminal device,
Identification information for identifying the first terminal device when reporting the reception quality measured by the first terminal device and received from the first terminal device to the first base station device And identification information for identifying the second terminal device is also reported to the first base station device.
Communicating with a second base station apparatus that can communicate with a first base station apparatus that can communicate with a frequency band that can be used privately and that can be applied to a frequency band that cannot be used privately A terminal device,
When receiving information indicating a measurement report instruction from the first base station apparatus, the terminal apparatus notifies the second base station apparatus of information indicating that the information has been received.
A communication method that is communicable with the first base station apparatus and that is applied to a frequency band that can be used privately is applied to a frequency band that cannot be used privately, and is at least a first terminal apparatus and a first terminal apparatus. A processing method in a second base station device capable of communicating with a second terminal device different from
When the second base station apparatus reports to the first base station apparatus the reception quality measured by the first terminal apparatus and acquired from the first terminal apparatus, the first base station apparatus The processing method characterized in that the identification information for identifying the terminal device and the identification information for identifying the second terminal device are also reported to the first base station device.
Communicating with a second base station apparatus that can communicate with a first base station apparatus that can communicate with a frequency band that can be used privately and that can be applied to a frequency band that cannot be used privately A processing method in a terminal device,
When the terminal apparatus receives information indicating a measurement report instruction from the first base station apparatus, the terminal apparatus notifies the second base station apparatus of information indicating that the information has been received. Processing method.
A communication method that is communicable with the first base station apparatus and that is applied to a frequency band that can be used privately is applied to a frequency band that cannot be used privately, and is at least a first terminal apparatus and a first terminal apparatus. A processing device mounted on a second base station device capable of communicating with a second terminal device different from
Identification information for identifying the first terminal device when reporting the reception quality measured by the first terminal device and received from the first terminal device to the first base station device And an identification information for identifying the second terminal device is also reported to the first base station device.
Communicating with a second base station apparatus that can communicate with a first base station apparatus that can communicate with a frequency band that can be used privately and that can be applied to a frequency band that cannot be used privately A processing device implemented in a terminal device,
When receiving information indicating a measurement report instruction from the first base station apparatus, the terminal apparatus is notified of information indicating that the information has been received to the second base station apparatus. Processing equipment.
A communication method that is communicable with the first base station apparatus and that is applied to a frequency band that can be used privately is applied to a frequency band that cannot be used privately, and is at least a first terminal apparatus and a first terminal apparatus. A program executed in a second base station apparatus capable of communicating with a different second terminal apparatus,
When the second base station apparatus reports to the first base station apparatus the reception quality measured by the first terminal apparatus and acquired from the first terminal apparatus, the first base station apparatus A program for causing the first base station apparatus to report identification information for identifying a terminal apparatus and identification information for identifying the second terminal apparatus.
A recording medium on which a program is recorded, wherein the program according to claim 7 is recorded.
Communicating with a second base station apparatus that can communicate with a first base station apparatus that can communicate with a frequency band that can be used privately and that can be applied to a frequency band that cannot be used privately A program to be executed in a terminal device,
When the terminal apparatus receives information indicating a measurement report instruction from the first base station apparatus, the terminal apparatus is notified of the information indicating that the information has been received to the terminal apparatus. A program characterized by letting
A recording medium on which a program is recorded, wherein the program according to claim 9 is recorded.