JP2016072819A - Base station device, communication device, radio terminal, control method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To establish a technique to coordinate heterogeneous radio communication techniques.SOLUTION: A radio communication system includes: a radio terminal; a base station device for communicating with the radio terminal by first radio communication; and a communication device that is connected with the base station device and communicates with the radio terminal by second radio communication. The radio terminal is able to receive data in parallel by the first radio communication and second radio communication. The base station device notifies the radio terminal of first information on the setting of the first radio communication and second information on the setting of the second radio communication with the communication device, further notifies the communication device of third information on the setting of the second radio communication with the radio terminal, and establishes the first radio communication with the radio terminal on the basis of the first information. The radio terminal and communication device establish the second radio communication for the communication device and base station device to transmit data in parallel to the radio terminal on the basis of the second information and third information, respectively.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a connection control technique in a wireless communication system in which different kinds of wireless communication techniques are mixed.

  In the 3rd Generation Partnership Project (3GPP), proposals have been made for cooperation between Long Term Evolution (LTE) and wireless LAN. For example, Non-Patent Document 1 proposes to integrate LTE and a wireless LAN in the radio link control (RLC) layer like LTE carrier aggregation.

Qualcomm, RP-140739, “Motivation for LTE-WiFi Aggregation”, 3GPP, June 2014

  Non-Patent Document 1 shows that throughput is significantly improved by cooperating LTE and wireless LAN in the RLC layer. However, while it has been shown that there is a merit in cooperating LTE and wireless LAN in this way, on the other hand, no method has been established for what kind of control these cooperate under. There was a problem that not.

  The present invention has been made in view of the above problems, and an object of the present invention is to establish a technique for cooperating different types of wireless communication technologies such as LTE and wireless LAN.

  In order to achieve the above object, a base station apparatus according to the present invention is connected to a radio terminal, a base station apparatus that communicates with the radio terminal by first radio communication, and the base station apparatus. The base station device in a wireless communication system capable of receiving data in parallel by the first wireless communication and the second wireless communication. And notifying the wireless terminal of the first information related to the setting of the first wireless communication and the second information related to the setting of the second wireless communication with the communication device, and A notification means for notifying the communication device of the third information related to the setting of the second wireless communication with the wireless terminal, and the wireless terminal based on the first information Establishing means for establishing first wireless communication; The wireless terminal and the communication device transmit data to the wireless terminal in parallel between the communication device and the base station device based on the second information and the third information, respectively. The second wireless communication for establishing is established.

  In order to achieve the above object, a communication apparatus according to the present invention includes a wireless terminal, a base station apparatus that communicates with the wireless terminal by first wireless communication, and the base station apparatus connected to the wireless terminal. A communication apparatus that performs communication by second wireless communication, wherein the wireless terminal is capable of receiving data in parallel by the first wireless communication and the second wireless communication. And receiving means for receiving notification of first information related to the setting of the second wireless communication with the wireless terminal from the base station apparatus, and based on the first information, the base station Acquisition of the first information in the communication device and the second information in the wireless terminal with the wireless terminal to which the second information related to the setting of the second wireless communication is notified from the device Processing for Without, and having a establishing means for establishing a second wireless communication.

  In order to achieve the above object, a wireless terminal according to the present invention includes a wireless terminal, a base station apparatus that communicates with the wireless terminal through first wireless communication, and the base station apparatus connected to the wireless terminal. A wireless communication system capable of receiving data in parallel by the first wireless communication and the second wireless communication. And receiving means for receiving notification of the first information related to the setting of the second wireless communication with the communication apparatus from the base station apparatus, and the base station based on the first information. Acquisition of the first information in the wireless terminal and the second information in the communication device with the communication device to which the second information related to the setting of the second wireless communication is notified from the device. Processing for Without, and having a establishing means for establishing a second wireless communication.

  According to the present invention, a technique for cooperating different types of wireless communication techniques is provided.

1 is a conceptual diagram illustrating a configuration example of a wireless communication system in which a plurality of wireless communication technologies are mixed. The conceptual diagram which shows the example of the communication performed between a wireless terminal in parallel with LTE and wireless LAN. The figure which shows the hardware configuration example of the base station apparatus of LTE, the access point of wireless LAN, and a wireless terminal. The block diagram which shows the function structural example of the base station apparatus of LTE. The block diagram which shows the function structural example of the access point of wireless LAN. The block diagram which shows the function structural example of a radio | wireless terminal. The sequence diagram which shows the flow of a process in a radio | wireless communications system.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(Wireless communication system)
FIG. 1 shows a configuration example of a wireless communication system according to this embodiment. The wireless communication system includes, for example, a long term evolution (LTE) base station apparatus, a wireless LAN access point (AP), and a wireless terminal. The base station apparatus may be a base station apparatus of another wireless communication standard such as a mobile phone of a generation before LTE, and the AP may be a communication apparatus conforming to any wireless communication standard. Note that the wireless LAN may use a frequency band of 2.4 GHz or 5.2 GHz, for example, or may use a millimeter wave or quasi-millimeter wave band such as a 60 GHz band. However, the base station apparatus and the AP follow different wireless communication methods, and perform the second wireless communication different from the first wireless communication and the first wireless communication with the wireless terminal, respectively. And

  In the wireless communication system according to the present embodiment, as shown in FIG. 2, the LTE base station device wirelessly transmits part or all of a control signal or a wireless communication setting signal that should be transmitted by the wireless LAN AP. Send to the terminal. On the other hand, the information transmitted from the LTE base station apparatus does not need to be transmitted from the wireless LAN AP. Thereby, the LTE base station apparatus can collectively control the wireless LAN communication. For example, the LTE base station apparatus receives feedback of observation results of signals from the LTE base station apparatus and the wireless LAN AP from the wireless terminal, and the wireless terminal not only performs communication by LTE. Then, it is determined whether to perform communication by wireless LAN.

  On the other hand, the data signal is transmitted from the LTE base station apparatus and the wireless LAN AP to the wireless terminal. 2 illustrates the case where the data signal transmitted from the AP of the wireless LAN is a data signal transferred from the LTE base station apparatus, the data signal transmitted from the AP is not necessarily LTE. It does not have to be transferred from the base station apparatus.

  As described above, in the wireless communication system according to the present embodiment, wireless LAN data communication and control communication are separated, and part or all of the control is integratedly handled by the LTE base station apparatus. Thereby, LTE data communication and wireless LAN data communication are integrated by the LTE base station apparatus. At this time, the LTE base station apparatus also transmits control information to the wireless LAN AP. That is, part or all of the wireless LAN control information is transmitted not only to the wireless terminal but also to the wireless LAN AP by the LTE base station apparatus. When the wireless LAN AP receives the information, the wireless LAN AP sets a connection with the wireless terminal based on the received information. At this time, since the wireless terminal receives notification of information for setting the wireless LAN from the LTE base station apparatus, the wireless terminal can set the connection by using the wireless LAN. As a result, the wireless LAN AP and the wireless terminal can establish a connection between the wireless LAN AP and the wireless terminal without performing acquisition processing of information notified from the LTE base station device. As a result, since the processing required for the acquisition process is omitted, the wireless LAN connection can be established at high speed.

  The signal for controlling the wireless LAN transmitted from the LTE base station device to the wireless LAN AP is, for example, a wireless terminal connected to the base station device, and establishes a wireless LAN connection. The information (for example, MAC address) specifying the wireless terminal to be included is included. Similarly, the signal for controlling the wireless LAN transmitted from the LTE base station apparatus to the wireless terminal is, for example, information identifying one or more wireless LAN APs to which the wireless terminal may connect ( For example, SSID). Note that an LTE base station apparatus may transmit one or more wireless signals that may transmit the transferred data as a wireless signal only when the wireless LAN transmits a data signal transferred from itself to the wireless terminal. Information specifying the AP of the LAN may be notified to the wireless terminal. That is, the LTE base station apparatus may not notify the wireless terminal of information specifying the AP for a wireless LAN AP that transmits a data signal acquired from other than the LTE base station apparatus to the wireless terminal. . In addition, the LTE base station apparatus transmits one or more wireless terminals that can connect the wireless terminal information to the wireless terminal only when data transferred from the LTE base station apparatus is transmitted to the wireless terminal. You may notify to AP of LAN.

  Also, the LTE base station apparatus specifies the position of the wireless terminal, and according to the position and the position of the wireless LAN AP, information on the antenna settings to be used by each of the wireless LAN AP and the wireless terminal, You may transmit to AP of a wireless LAN and a wireless terminal, respectively. Note that the LTE base station apparatus may acquire the position of the wireless LAN AP in advance, for example, when the AP is installed, or may specify each time the antenna setting information is formed. . The formation and notification of antenna setting information based on the position of the wireless terminal and the AP is particularly effective when the used frequency band is a frequency band with high straightness of radio waves such as a 60 GHz band. This is because, in such a frequency band, it is considered that direct wave communication between the AP and the wireless terminal is mainly performed. Therefore, the direction in which the position of the AP and the wireless terminal is connected by a straight line is generally suitable for communication. This is because it can be estimated as the antenna directivity direction. If this information is not available, it takes time to search for the antenna directivity direction between the AP and the wireless terminal. On the other hand, the LTE base station apparatus determines the directivity direction of the antenna and notifies the AP and the wireless terminal of the wireless LAN, so that this search can be omitted or the time required for the search can be reduced. Accordingly, the connection between the wireless LAN AP and the wireless terminal can be performed at high speed without performing the acquisition process by searching for the antenna setting information notified from the LTE base station apparatus by the AP and the wireless terminal. Will be established.

  The LTE base station apparatus can transmit a signal to the wireless LAN AP in a signal format used for communication between the LTE base station apparatuses. In this case, for example, communication between the LTE base station apparatus and the wireless LAN AP is performed via a conversion device that converts the signal format used between the LTE base station apparatuses into the signal format used by the wireless LAN AP. Can be done. For example, this conversion device may exist in an LTE base station device or in a wireless LAN AP. Similarly, the wireless terminal can receive a control signal for wireless LAN, for example, in the LTE signal format. In this case, the wireless terminal can set or control the wireless LAN by converting the signal received in the LTE signal format into the wireless LAN signal format. As described above, the LTE base station apparatus can communicate with the AP of the wireless LAN in a format (interface) when communicating with other base station apparatuses. It is possible to minimize changes from the current state. That is, the LTE base station apparatus cooperates with the wireless LAN AP in the same format as that in which the LTE base station apparatus communicates with the wireless terminal in cooperation with another LTE base station apparatus. You will be able to communicate with.

  In the following, regarding the LTE base station apparatus that performs such processing, the AP of the wireless LAN, and the configuration of the wireless terminal that can perform communication in parallel in the LTE and the wireless LAN, and the flow of processing executed by them, This will be described in detail.

(Configuration of LTE base station apparatus, wireless LAN AP, and wireless terminal)
FIG. 3 illustrates a hardware configuration example of an LTE base station apparatus, a wireless LAN AP, and a wireless terminal. The LTE base station apparatus, the wireless LAN AP, and the wireless terminal have the same hardware configuration as shown in FIG. 3, for example, such as a CPU 301, a ROM 302, a RAM 303, an external storage device 304, and a communication It has a device 305. In the LTE base station apparatus, the wireless LAN AP, and the wireless terminal, for example, a program that realizes each function of the master eNB and the secondary eNB as described above, which is recorded in any of the ROM 302, the RAM 303, and the external storage device 304. It is executed by the CPU 301.

  Then, the LTE base station apparatus, the wireless LAN AP, and the wireless terminal, for example, control the communication device 305 by the CPU 301 to perform communication between the LTE base station apparatus and the wireless LAN AP and the wireless terminal. Also, the LTE base station apparatus and the wireless LAN AP, for example, control the communication apparatus 305 by the CPU 301 to perform communication between the LTE base station apparatus and the wireless LAN AP. In FIG. 3, the LTE base station device, the wireless LAN AP, and the wireless terminal have one communication device 305, but are not limited thereto. For example, the LTE base station apparatus and the wireless LAN AP may include a communication apparatus for communication between the LTE base station apparatus and the wireless LAN AP and a communication apparatus between the wireless terminals. Further, the wireless terminal includes, for example, an LTE communication device and a wireless LAN communication device.

  The LTE base station apparatus, wireless LAN AP, and wireless terminal may be equipped with dedicated hardware for executing each function, or may be a computer that executes a part of the hardware and operates the program. May be executed. All functions may be executed by a computer and a program.

  FIG. 4 shows a functional configuration example of an LTE base station apparatus. The LTE base station apparatus includes, for example, a wireless communication unit 401, a wired communication unit 402, an LTE setting / control information forming unit 403, and a wireless LAN setting / control information forming unit 404 as its functions. The wireless communication unit 401 is a functional unit for performing, for example, LTE communication with a wireless terminal. The wired communication unit 402 is a functional unit for communicating with, for example, a wireless LAN AP. The communication with the AP of the wireless LAN may be performed via, for example, a wireless entrance line. In this case, the LTE base station apparatus may not have the wired communication unit 402. For example, the wired communication unit 402 may transmit a signal from the PDCP (Packet Data Convergence Protocol) sublayer to the wireless LAN AP with the wireless LAN AP. Thereby, the LTE base station apparatus can communicate with the AP of the wireless LAN using the existing X2 interface.

  The LTE setting / control information forming unit 403 forms setting information for LTE wireless connection established with a wireless terminal, or forms control information during communication. The information formed here is information transmitted to a wireless terminal by a general LTE base station apparatus, and thus detailed description thereof is omitted. The formed information is transmitted to the wireless terminal via the wireless communication unit 401. Note that LTE setting / control information can be transmitted in a wireless terminal with an indicator indicating that the information relates to LTE and does not relate to wireless LAN.

  The wireless LAN setting / control information forming unit 404 forms part or all of setting information for wireless LAN connection established between the wireless LAN AP and the wireless terminal and control information during communication. This information may include, for example, information for specifying a wireless LAN AP, information for specifying a wireless terminal, information on an antenna to be set by each of the wireless LAN AP and the wireless terminal, and the like. In this case, the wireless LAN setting / control information forming unit 404 identifies the position of the wireless terminal based on LTE communication, and based on the identified position and the position of the wireless LAN AP, The antenna settings to be used by the AP and the wireless terminal are determined. For example, the wireless LAN setting / control information forming unit 404 is configured so that the direction of the antenna is directed to the direction in which the position of the wireless terminal and the position of the wireless LAN AP are connected by a straight line. Determine the respective antenna settings. Other setting information and control information may be included in this information.

  Further, the wireless LAN setting / control information forming unit 404 performs wireless communication at the wireless terminal based on, for example, information on the load of the wireless LAN AP that can be connected to the wireless terminal, and information on the quality measurement result of the wireless signal at the wireless terminal. It is possible to determine whether to perform communication via the LAN. That is, for example, when the wireless terminal determines that communication by wireless LAN should be performed, the wireless LAN setting / control information forming unit 404 can also form a signal for activating the wireless LAN AP. Also, the wireless LAN setting / control information forming unit 404 determines whether the wireless LAN AP is activated, that is, has not shifted to the sleep state, for example, when the wireless terminal is communicating with the wireless LAN. A confirmation signal may be transmitted periodically. For example, the wireless LAN setting / control information forming unit 404 can also perform resource control during communication in the wireless LAN. Therefore, an LTE base station apparatus can perform wireless resource control that integrates LTE and wireless LAN by controlling APs of the wireless LAN in a centralized manner. The formed information is transmitted to the wireless LAN AP via the wired communication unit 402 and to the wireless terminal via the wireless communication unit 401.

  In some cases, the transmission data is transferred from the LTE base station apparatus to the wireless LAN AP. In this case, the transmission data can also be transmitted to the wireless LAN AP via, for example, the X2 interface. Note that transmission data may be transferred to the AP of the wireless LAN via another interface. Further, for example, one set of data such as one stream may be transmitted in parallel in LTE and wireless LAN, for example, one of two streams is transmitted in parallel in LTE and wireless LAN. May be sent. In the former case, for example, a sequence number is assigned to a data signal transmitted by LTE and the wireless LAN, and the wireless terminal rearranges the received data signal according to the sequence number, thereby transferring one data. Can be received. At this time, the LTE base station apparatus determines, for example, which data part should be transmitted by the wireless LAN, and transmits the data part to be transmitted to the wireless LAN AP via the wired communication unit 402. Send. In the latter case, the wireless LAN AP may receive data from another network entity and transfer it to the wireless terminal instead of receiving data transfer from the LTE base station apparatus.

  FIG. 5 shows a functional configuration example of a wireless LAN AP. For example, the AP includes a wireless communication unit 501, a wired communication unit 502, and a wireless LAN setting unit 503 as its functions. Note that the AP further includes a conversion unit 504 in some cases. The wireless communication unit 501 is a functional unit for performing communication with a wireless terminal via a wireless LAN, for example.

  The wired communication unit 502 is, for example, a functional unit for performing communication with an LTE base station apparatus. The communication with the LTE base station apparatus may be performed via a wireless line, for example, and the AP may not have the wired communication unit 502 in that case. When the wired communication unit 502 receives a signal transmitted from the PDCP sublayer of the LTE base station apparatus, for example, the signal format is converted by the conversion unit 504 in order to interpret the signal as a signal of the MAC layer of the wireless LAN. Perform the conversion.

  The wireless LAN setting unit 503 sets the wireless communication unit 501 based on the setting information and control information received from the LTE base station device via the wired communication unit 502. For example, the wireless LAN setting unit 503 acquires information on a wireless terminal to be connected from an LTE base station apparatus, and instructs the wireless communication unit 501 to connect to the wireless terminal. For example, when receiving information on antenna settings to be used from an LTE base station apparatus, the wireless LAN setting unit 503 sets antenna weights based on the received information and controls the antenna directivity direction. To do. When the wireless LAN setting unit 503 receives all of the setting information from the LTE base station device, the wireless LAN setting unit 503 does not need to perform communication for setting with the wireless terminal, and internally receives from the LTE base station device. You only need to make settings based on the information. On the other hand, when only a part of the setting information is received from the LTE base station apparatus, the wireless LAN setting unit 503 obtains the remaining setting information from the wireless terminal via the wireless communication unit 501, and the wireless communication unit 501 is set. Also, the wireless LAN setting unit 503 controls the wireless communication unit 501 with a control signal from, for example, an LTE base station device during communication with a wireless terminal.

  The setting signal transmitted from the LTE base station apparatus to the AP of the wireless LAN may include, for example, a request for starting data transmission to the wireless terminal in cooperation with the LTE base station apparatus. In this case, this request may include, for example, identification information of the target AP, information for specifying the wireless terminal, information on the capability of the wireless terminal, and the like. In addition, the control signal transmitted from the LTE base station apparatus to the AP of the wireless LAN may include, for example, information on AP setting change. In this case, the setting change information may include, for example, antenna pattern setting information, current antenna setting information, and the like. Further, the control signal transmitted from the LTE base station apparatus to the AP of the wireless LAN may include a request for termination of data transmission to the wireless terminal in cooperation with the LTE base station apparatus. In this case, this request may include, for example, identification information of the target AP, information specifying the wireless terminal, setting information of the wireless terminal after releasing the wireless LAN connection, and the like. In response to these control signals or setting signals, the AP of the wireless LAN, for example, transmits an acknowledgment (ACK) that the signal has been received or setting information desired by the AP of the wireless LAN to the LTE base station. You may reply to the device.

  The conversion unit 504 converts a signal in a format suitable for communication between LTE base station devices received from an LTE base station device into a signal in a format suitable for a wireless LAN. For example, when the wired communication unit 502 receives a signal transmitted from the PDCP sublayer of LTE, the conversion unit 504 converts this signal into a signal of the MAC layer of the wireless LAN. The conversion unit 504 converts the packet configuration of the data signal into a wireless LAN packet format. The converted signal is, for example, sent to the wireless communication unit 501 for a data signal, and sent to the wireless LAN setting unit 503 for a control signal or a setting signal. When there is a signal to be transmitted to the LTE base station apparatus by the wireless LAN AP, the signal is converted to the LTE format and then transmitted to the LTE base station apparatus via the wired communication unit 502. May be.

  Note that an independent entity having the function of the conversion unit 504 may be arranged at another location in the network. In this case, the LTE base station apparatus first transmits a signal to be transmitted to the wireless LAN AP to this entity, and this entity converts the received signal into a wireless LAN format to the wireless LAN AP. And send. Similarly, when there is a signal from the wireless LAN AP to the LTE base station apparatus, this entity receives this signal, converts it into the LTE format, and transmits it to the LTE base station apparatus. Accordingly, for example, an LTE base station apparatus can perform communication in a format similar to that in which another LTE base station apparatus is a partner while the wireless LAN AP is a partner. Therefore, for example, an LTE base station apparatus performs an operation similar to that of a dual connectivity master eNB discussed in LTE, thereby operating a wireless LAN AP like a secondary eNB and communicating with a wireless terminal. Can be done. In addition, the conversion unit 504 may be present in the wireless LAN AP such that, for example, a signal from an LTE base station apparatus is received and passed to the wired communication unit 502. Moreover, the conversion part 504 may exist in the base station apparatus of LTE.

  FIG. 6 shows a functional configuration example of the wireless terminal. For example, the wireless terminal includes a wireless LAN communication unit 601, an LTE communication unit 602, a wireless LAN setting unit 603, and a conversion unit 604 as its functions. For example, the wireless LAN communication unit 601 is a functional unit for performing wireless LAN communication with a wireless LAN AP. The LTE communication unit 602 is a functional unit for performing LTE communication with an LTE base station device, for example. The wireless terminal can receive signals of a plurality of different wireless communication technologies in parallel via the wireless LAN communication unit 601 and the LTE communication unit 602. Note that the LTE communication unit 602 also has a function of feeding back information such as measurement results of wireless signals of the wireless LAN to the LTE base station apparatus in the wireless terminal.

  The wireless LAN setting unit 603 sets the wireless LAN communication unit 601 based on the wireless LAN setting information notified from the LTE base station device via the LTE communication unit 602. For example, when the wireless LAN setting unit 603 obtains information specifying an AP of a wireless LAN to be connected from an LTE base station apparatus, the wireless LAN communication unit 601 performs setting so that the AP is searched. Note that when there are a plurality of AP candidates for the connection-destination wireless LAN, the wireless LAN setting unit 603 searches each of them and measures the quality of the wireless signal from each of the AP candidates, for example. Then, the wireless LAN setting unit 603 sends to the LTE base station apparatus information on which of the connected AP candidates was found by the search and the quality measurement result of the wireless signal from the discovered AP candidate. May be notified. Then, the LTE base station apparatus determines a wireless LAN AP to be connected according to the notification and notifies the wireless terminal of the AP, whereby the wireless LAN setting unit 603 receives the wireless LAN communication according to the notification. The part 601 can be set.

  For example, if the wireless LAN setting unit 603 receives antenna setting information to be used from an LTE base station apparatus, the wireless LAN setting unit 603 sets the antenna weight based on the received information and controls the antenna directivity direction.

  The wireless LAN setting unit 603 may acquire setting information or control information not notified from the LTE base station apparatus from the AP of the wireless LAN via the wireless LAN communication unit 601. Note that, when information for setting is exchanged between the wireless LAN AP and the wireless terminal, the wireless LAN communication unit 601 can transmit the setting information to the wireless LAN AP.

  The conversion unit 604 converts the wireless LAN setting signal or control signal received from the LTE base station apparatus in the LTE communication unit 602 into a signal of the wireless LAN format, and transfers the signal to the wireless LAN setting unit 603. Furthermore, the conversion unit 604 extracts data from, for example, a data signal in a wireless LAN format received by the wireless LAN communication unit 601 and transfers the data to the LTE communication unit 602. For example, the LTE communication unit 602 integrates data acquired by receiving an LTE radio signal and data received from the conversion unit 604 to form one data.

(Process flow)
Next, a flow of processing executed by the LTE base station apparatus, the wireless LAN AP, and the wireless terminal will be described with reference to FIG. In this embodiment, for simplicity of explanation, a case will be described in which all wireless LAN setting information for wireless LAN APs and wireless terminals is notified from an LTE base station apparatus.

  First, the LTE base station apparatus determines whether or not the wireless terminal should perform wireless communication using a wireless LAN (S701). For example, this determination is made based on the amount of data to be transmitted to the wireless terminal. When the LTE base station apparatus determines that the wireless terminal should perform wireless communication using the wireless LAN (YES in step S701), the wireless base station AP establishes a wireless LAN connection and wireless communication. Setting information to be set by each terminal is determined (S702). Then, the LTE base station apparatus notifies the determined information to both the wireless terminal and the wireless LAN AP (S703, S704). Upon receiving the notification, the wireless LAN AP and the wireless terminal respectively execute wireless LAN connection settings (S705 and S706). When all the setting information is notified from the LTE base station apparatus, it is possible to perform wireless connection between the wireless LAN AP and the wireless terminal without performing further setting information acquisition processing. Is established. Thereafter, data is transmitted in parallel from the LTE base station apparatus and the wireless LAN AP to the wireless terminal (S707, S708).

  As described above, since communication by the wireless LAN is centrally controlled by LTE, wireless resources by the wireless LAN can be allocated to the wireless terminals in a timely manner. Furthermore, at least a part of the control signal of the wireless LAN is integrated on the LTE side, and the connection is established by the wireless base station apparatus notifying the wireless LAN AP and the wireless terminal of the wireless LAN setting information. Can be shortened. Even when handover is performed between the LTE connection and the wireless LAN connection, control is performed because at least part of the control signal is transmitted to the wireless terminal and the wireless LAN AP via LTE. Handover at the signal portion is not necessary. As a result, it is possible to speed up connection switching. As described above, the technique according to the present embodiment enables highly different types of wireless communication technologies to cooperate with each other.

Claims (15)

A wireless terminal, a base station apparatus that communicates with the wireless terminal by first wireless communication, and a communication apparatus that is connected to the base station apparatus and communicates with the wireless terminal by second wireless communication, A wireless terminal is the base station device in a wireless communication system capable of receiving data in parallel by the first wireless communication and the second wireless communication,
Notifying the wireless terminal of the first information related to the setting of the first wireless communication and the second information related to the setting of the second wireless communication with the communication device, and further to the communication device Notification means for notifying the third information relating to the setting of the second wireless communication with the wireless terminal;
Establishing means for establishing the first wireless communication with the wireless terminal based on the first information;
Have
The wireless terminal and the communication device are configured to transmit the data to the wireless terminal in parallel between the communication device and the base station device based on the second information and the third information, respectively. 2 wireless communication is established,
A base station apparatus. The notifying unit notifies the third information to one or more communication devices that may transmit data transferred from the base station device to the wireless terminal through the second wireless communication. To
The base station apparatus according to claim 1. The second information includes information for specifying the communication device, and the third information includes information for specifying the wireless terminal.
The base station apparatus according to claim 1, wherein the base station apparatus is a base station apparatus. A specifying means for specifying the position of the wireless terminal;
Forming means for forming information on antenna settings to be used by the communication device and the wireless terminal based on the identified position of the wireless terminal and the position of the communication device;
Further comprising
The second information includes antenna setting information to be used by the wireless terminal, and the third information includes antenna setting information to be used by the communication device.
The base station apparatus according to claim 1, wherein the base station apparatus is a base station apparatus. The notification means further has a function of transmitting a part or all of a control signal related to communication with the communication device to the wireless terminal,
The base station apparatus according to claim 1, wherein the base station apparatus is a base station apparatus. A wireless terminal, a base station apparatus that communicates with the wireless terminal by first wireless communication, and a communication apparatus that is connected to the base station apparatus and communicates with the wireless terminal by second wireless communication, A wireless terminal is the communication device in a wireless communication system capable of receiving data in parallel by the first wireless communication and the second wireless communication,
Receiving means for receiving, from the base station device, notification of first information related to the setting of the second wireless communication with the wireless terminal;
Based on the first information, the first information in the communication device and the wireless terminal to which the second information related to the setting of the second wireless communication is notified from the base station device, and Establishing means for establishing the second wireless communication without performing processing for obtaining the second information in the wireless terminal;
A communication apparatus comprising: The receiving means receives the notification via a converting means for converting the format used by the base station device in communication with another base station device to a format used for control in the communication device,
The communication apparatus according to claim 6. A wireless terminal, a base station apparatus that communicates with the wireless terminal by first wireless communication, and a communication apparatus that is connected to the base station apparatus and communicates with the wireless terminal by second wireless communication, A wireless terminal is the wireless terminal in a wireless communication system capable of receiving data in parallel by the first wireless communication and the second wireless communication,
Receiving means for receiving, from the base station device, notification of first information related to the setting of the second wireless communication with the communication device;
Based on the first information, the first information in the wireless terminal and the communication device to which the second information related to the setting of the second wireless communication is notified from the base station device, and Establishing means for establishing the second wireless communication without performing processing for obtaining the second information in the communication device;
A wireless terminal characterized by comprising: A notification means for notifying the base station apparatus of a result of observing a signal from the base station apparatus and a signal from the communication apparatus;
The wireless terminal according to claim 8. A wireless terminal, a base station apparatus that communicates with the wireless terminal by first wireless communication, and a communication apparatus that is connected to the base station apparatus and communicates with the wireless terminal by second wireless communication, A wireless terminal is a control method for the base station apparatus in a wireless communication system capable of receiving data in parallel by the first wireless communication and the second wireless communication,
A notifying unit notifies the wireless terminal of the first information related to the setting of the first wireless communication and the second information related to the setting of the second wireless communication with the communication device; A notification step of notifying the communication device of the third information relating to the setting of the second wireless communication with the wireless terminal;
An establishing step for establishing, based on the first information, the first wireless communication with the wireless terminal;
Have
The wireless terminal and the communication device are configured to transmit the data to the wireless terminal in parallel between the communication device and the base station device based on the second information and the third information, respectively. 2 wireless communication is established,
A control method characterized by that. A wireless terminal, a base station apparatus that communicates with the wireless terminal by first wireless communication, and a communication apparatus that is connected to the base station apparatus and communicates with the wireless terminal by second wireless communication, A wireless terminal is a method for controlling the communication device in a wireless communication system capable of receiving data in parallel by the first wireless communication and the second wireless communication,
A receiving step for receiving a notification of the first information related to the setting of the second wireless communication with the wireless terminal from the base station apparatus;
Based on the first information, an establishing unit communicates the second information related to the second wireless communication setting from the base station device with the wireless terminal in the communication device. Establishing the second wireless communication without performing processing for obtaining the first information and the second information in the wireless terminal;
A control method characterized by comprising: A wireless terminal, a base station apparatus that communicates with the wireless terminal by first wireless communication, and a communication apparatus that is connected to the base station apparatus and communicates with the wireless terminal by second wireless communication, The wireless terminal is a method for controlling the wireless terminal in a wireless communication system capable of receiving data in parallel by the first wireless communication and the second wireless communication,
A receiving step for receiving from the base station device a notification of the first information related to the setting of the second wireless communication with the communication device;
Based on the first information, an establishing unit communicates the second information related to the second wireless communication setting from the base station device with the communication device, and the second information in the wireless terminal. Establishing the second wireless communication without performing a process for obtaining the first information and the second information in the communication device; and
A control method characterized by comprising:   A wireless terminal, a base station apparatus that communicates with the wireless terminal by first wireless communication, and a communication apparatus that is connected to the base station apparatus and communicates with the wireless terminal by second wireless communication, The control method according to claim 10, wherein a wireless terminal is a computer provided in the base station apparatus in a wireless communication system capable of receiving data in parallel by the first wireless communication and the second wireless communication. A program for running   A wireless terminal, a base station apparatus that communicates with the wireless terminal by first wireless communication, and a communication apparatus that is connected to the base station apparatus and communicates with the wireless terminal by second wireless communication, The wireless terminal is provided with a control method according to claim 11 in a computer provided in the communication device in a wireless communication system capable of receiving data in parallel by the first wireless communication and the second wireless communication. A program to be executed.   A wireless terminal, a base station apparatus that communicates with the wireless terminal by first wireless communication, and a communication apparatus that is connected to the base station apparatus and communicates with the wireless terminal by second wireless communication, The wireless terminal is provided with a control method according to claim 12 in a computer provided in the wireless terminal in a wireless communication system capable of receiving data in parallel by the first wireless communication and the second wireless communication. A program to be executed.

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