JP6668961B2 - Communication device, method and program - Google Patents

Description

  The present invention relates to network technology, and more particularly, to a communication device, a method, and a program that generate wireless state information for each communication session based on wireless state information handled by a base station device.

  In recent years, with the improvement of the processing performance and resolution of mobile terminals and the development of elemental technologies for handling information of various media, it has become possible to enjoy information delivery by rich media from mobile terminals anytime and anywhere. Such a lifestyle has become widespread, and mobile communication technologies such as LTE (Long Term Evolution) and LTE-A (LTE Advanced) are spreading and expanding as a high-speed mobile environment supporting information distribution.

  In a high-speed mobile communication environment such as LTE, a large-capacity buffer is provided in a base station device of a mobile network such as an eNodeB in order to absorb the influence of band fluctuation in a wireless network. In an ARQ (Automatic Repeat reQuest) technique in an RLC (Radio Link Control) layer and a HARQ (Hybrid ARQ) technique in a MAC (Media Access Control) layer, retransmission is performed in a lower layer when a bit error occurs in a radio section. To repair the data. For this reason, packets are hardly damaged in layers higher than the network layer.

  On the other hand, TCP (Transmission Control Protocol), which is a transport layer protocol widely used in both wired and wireless data communication, often uses a loss-based congestion control method. The loss-based congestion control method determines that congestion (network congestion) has occurred when packet loss is detected, as typified by CUBIC TCP (Non-Patent Document 1) and TCP NewReno (Non-Patent Document 2). This is a method for lowering the transmission rate.

  As described above, in recent mobile communications, packet damage due to bit errors is unlikely to occur. Therefore, in the TCP using the loss-based congestion control method, the transmission rate, for example, the congestion window (congestion window, cwnd) continues to increase until packet loss occurs due to buffer overflow.

  If a packet loss occurs after the cwnd becomes enormous, the amount of data that can be continuously transmitted after retransmission of the lost packet is reduced, so that data transmission may be stopped. When data transmission stops due to packet loss, a decrease in TCP throughput, interruption of reproduction of streaming content such as video and audio, and the like occur, and the quality of experience of the user is significantly impaired.

  In mobile communication, packet loss occurs even when the network is not congested, such as when a user terminal moves into the edge of a cell or behind a building due to movement of a user, or during handover processing. Sometimes. However, in the loss-based congestion control method, when a packet loss occurs, cwnd is unnecessarily reduced to suppress the transmission data amount even if the network is not congested. As a result, the TCP throughput is reduced, and the quality of experience of the user is significantly impaired.

  In contrast to such a loss-based congestion control method, there is a delay-based congestion control method typified by TCP Vegas (Non-Patent Document 3). In the delay-based congestion control method, the queuing delay is estimated from the difference between the observed delay time and the minimum value, and it is determined that congestion has occurred when the queuing delay exceeds a predetermined threshold. To reduce the transmission rate.

  However, in mobile communication in recent years, delay increases due to repair of bit errors in lower layers regardless of the presence or absence of congestion. Therefore, TCP that uses the delay-based congestion control method erroneously detects an increase in delay as congestion and unnecessarily lowers cwnd to suppress the amount of transmitted data, leading to a reduction in TCP throughput and a user experience. The quality is significantly impaired.

  On the other hand, in the method described in Non-Patent Document 4, a base station apparatus, an MEC (Mobile Edge Computing) server, or the like analyzes the effective throughput of the mobile network and embeds it in a TCP header to notify the data transmitting apparatus. In the TCP of the data transmission device, the amount of transmission data such as cwnd is controlled in accordance with the notified effective throughput. As a result, the congestion of the mobile network can be minimized, the TCP throughput can be improved without causing packet loss, and the quality of experience of the user can be improved.

  Non-Patent Document 4 proposes only effective throughput of a mobile network as information to be notified from a base station device to a data transmission device. However, by using this notification method, for example, it is possible to notify general information (hereinafter, referred to as wireless state information) on the state of the mobile network, such as the amount of data staying in the base station device.

Sangtae Ha, 2 others, "CUBIC: A New TCP-Friendly High-Speed TCP Variant", Proceedings of the ACM SIGOPS, July 2008, vol. 42, no. 5, p. 64-74 S. Floyd, and one other, “The New Reno Modification to TCP's Fast Recovery Algorithm”, RFC 2852, April 1999 Lawrence S.M. Brakmo and two others, “TCP Vegas: New Technologies for Congestion Detection and Aviation”, Proceedings of ACM SIGCOM Communications, Communications Agreement, Communications Agreement, Communications, Communications, Communication. 24-35, 1994 A. Jain, and 5 others, "Mobile Throughput Guidance Inband Signaling Protocol", Internet Engineering Task Force Internet-Draft, September 2015

  In LTE and LTE-A, a packet transmitted and received between a P-GW (Packet data network Gateway) and a user terminal transmits a GTP-U (General packet radio service Tunneling Protocol for User plane) and a UDP (User Datagram Protocol) / IP ( Internet Protocol). As a result, the only information that can identify the packet is the IP address assigned to each user terminal.

  Therefore, the wireless state information collected by the base station device existing between the P-GW and the user terminal is information for each user terminal (for each IP address). Therefore, in the method described in Non-Patent Document 4, the radio state information notified by the base station device is information for each user terminal.

  On the other hand, the control performed by the data transmission device includes control that requires information for each communication session, such as TCP congestion control and priority control for each application.

  However, in the method described in Non-Patent Document 4, the radio state information notified by the base station device is information for each user terminal for the above-described reason. Therefore, when the user terminal performs communication using a plurality of communication sessions, the information required by the data transmission device is information for each communication session, whereas the radio state information notified by the base station device is the user terminal. Is different.

  This difference causes a problem that, for example, when congestion occurs, the data transmission device cannot determine a communication session in which the amount of transmission data should be suppressed.

  Specifically, if the amount of staying data in communication session units is known, it can be estimated that a communication session having a large amount of staying data is the main cause of congestion. If the communication session that is the main cause of congestion is known, the data transmitting device can take measures such as reducing the amount of transmission data only for the communication session.

  However, since the amount of staying data that can be reported by the base station apparatus is information on a user terminal basis, the TCP of the data transmitting apparatus cannot grasp the amount of staying data on a communication session basis. Therefore, the data transmission device cannot determine which communication session is the main cause of congestion.

  If the data transmitting apparatus uniformly suppresses the transmission data amount of all communication sessions without determining the communication session that is the main cause of congestion, there is a possibility that a new communication session or the like cannot be communicated. As a result, there is an inconvenience that a time-out or the like is caused to remarkably lower the user's quality of experience.

  Further, this difference causes a problem that the data transmitting apparatus cannot determine whether each communication session satisfies the required performance.

  Specifically, the data transmission device cannot grasp the throughput of each communication session. For this reason, the data transmission device cannot detect a decrease in the throughput in a service such as a moving image having a required performance for the throughput, and cannot take measures against the decrease in the quality of experience. As a result, there is an inconvenience that the quality of experience of the user remains reduced.

  An object of the present invention is to provide a communication device, a method, and a program that enable a data transmission device to perform control related to data transmission based on wireless state information in communication session units.

  In order to solve the above-described problem, the communication device of the present invention includes one or more communication sessions, the first wireless state information, which is information regarding the degree of congestion of wireless communication or the quality of communication quality. A wireless state information acquisition unit for acquiring, a session information acquisition unit for acquiring session information for each communication session, and a second wireless state information for each communication session based on the first wireless state information and the session information. And a wireless state information generating unit that generates and outputs the wireless state information.

  Further, the communication method of the present invention includes acquiring at least first wireless state information, which is information on the degree of congestion of wireless communication or the quality of communication quality, including one or more communication sessions, and And generating and outputting second wireless state information for each communication session based on the first wireless state information and the session information.

  Further, the communication program of the present invention provides a computer with a wireless state for acquiring first wireless state information, which is information on the degree of congestion of wireless communication or the quality of communication quality, including one or more communication sessions. An information acquisition function, a session information acquisition function of acquiring session information for each communication session, and generating and outputting second wireless state information of the communication session unit based on the first wireless state information and the session information And a wireless status information generating function.

  The communication device, method, and program of the present invention enable a data transmission device to perform control related to data transmission based on wireless state information in communication session units.

It is a figure showing the example of composition of the communication apparatus of the 1st and 2nd embodiment of the present invention. It is a figure showing an example of operation of a communication device of a 1st and 2nd embodiment of the present invention. It is a figure showing the example of composition of the communications system of the third embodiment of the present invention. It is a figure showing the example of composition of the communication device of a third embodiment of the present invention. It is a figure showing the example of composition of the base station device of a third embodiment of the present invention. FIG. 14 is a diagram illustrating an operation example of the communication device according to the third embodiment of the present invention. It is a figure showing an example of operation of a base station device of a third embodiment of the present invention. It is a figure showing the example of composition of the communication system of a 4th embodiment of the present invention. It is a figure showing the example of composition of the communication device of a 4th embodiment of the present invention. It is a figure showing the example of composition of the data transmission device of a 4th embodiment of the present invention. FIG. 14 is a diagram illustrating an operation example of the communication device according to the fourth embodiment of the present invention. FIG. 14 is a diagram illustrating an operation example of the data transmission device according to the fourth embodiment of the present invention. FIG. 3 is a diagram illustrating a hardware configuration example of each embodiment of the present invention.

[First embodiment]
A first embodiment of the present invention will be described.

  FIG. 1 shows a configuration example of a communication device 10 of the present embodiment. The communication device 10 according to the present embodiment includes a wireless state information acquisition unit 11, a session information acquisition unit 12, and a wireless state information generation unit 13.

  The wireless state information acquisition unit 11 is a part that acquires first wireless state information including one or more communication sessions. The wireless status information is information on the degree of congestion of wireless communication or the quality of communication quality. The session information acquisition unit 12 is a part that acquires session information for each communication session. The wireless state information generation unit 13 is a part that generates and outputs second wireless state information for each communication session based on the first wireless state information and the session information.

  By configuring the communication device 10 in this manner, the communication device 10 generates and outputs second wireless state information in communication session units based on the first wireless state information and the session information. This allows the data transmitting apparatus to perform priority control and congestion control using the wireless state information in communication session units. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

  Next, FIG. 2 shows an example of the operation of the communication device 10 of the present embodiment.

  First, the wireless condition information acquiring unit 11 acquires first wireless condition information including one or more communication sessions (step S101). Further, the session information acquisition unit 12 acquires session information for each communication session (Step S102). Then, the wireless state information generating unit 13 generates and outputs second wireless state information for each communication session based on the first wireless state information and the session information (Step S103).

  By operating in this manner, the communication device 10 generates and outputs second wireless state information in communication session units based on the first wireless state information and the session information. This allows the data transmitting apparatus to perform priority control and congestion control using the wireless state information in communication session units. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

  As described above, in the first embodiment of the present invention, the communication device generates and outputs second wireless state information for each communication session based on the first wireless state information and the session information. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

[Second embodiment]
Next, a second embodiment of the present invention will be described. In the present embodiment, the communication device 10 of the first embodiment will be described more specifically.

  In the present embodiment, from the first wireless state information for each user terminal collected by the base station device and the like, suitable for control for each communication session performed by the data transmission device and the like, the second wireless state information of the communication session unit Generate.

  First, a configuration example of the communication device 10 according to the present embodiment will be described with reference to FIG.

  The wireless condition information acquisition unit 11 is a unit that acquires first wireless condition information collected by the base station device or the like as information for each user terminal.

  The session information acquisition unit 12 is a part that acquires session information collected or set by a data transmission device or the like as information for each communication session.

  The wireless state information generating unit 13 generates second wireless state information for each communication session based on the first wireless state information acquired by the wireless state information acquiring unit 11 and the session information acquired by the session information acquiring unit 12. And output.

  Next, the wireless status information acquisition unit 11 will be described in more detail. The wireless condition information acquiring unit 11 acquires first wireless condition information for each user terminal from a base station device or the like. As an acquisition method, for example, the wireless state information acquiring unit 11 may actively acquire the first wireless state information at predetermined time intervals or at an arbitrary timing, or may acquire the first wireless state information from the base station apparatus or the like. May be passively received.

Further, as the first wireless state information, information that can be obtained for communication addressed to the same user terminal is used. For example, it is possible to use the data size or the number of packets of data packets that have not yet been transmitted from the base station apparatus to the user terminal and that have stayed in the base station apparatus (hereinafter, staying data amount). Alternatively and / or one or more of the following information (hereinafter wireless throughput) may be used.
The effective throughput of the entire communication from the base station device to the user terminal The transmission speed of the entire communication from the base station device to the user terminal The transmission speed can be calculated from the following two pieces of information. When the transmission rate is used as the first wireless state information, the wireless state information acquisition unit 11 acquires the following information from the base station device and calculates the transmission rate. When only one of the following is obtained from the base station apparatus, the transmission rate can be calculated by estimating the other information from past results or the like, substituting with a predetermined value, or the like. is there.
-The number of radio bands or resource blocks allocated by the base station apparatus to the entire communication from the base station apparatus to the user terminal-Information on the code modulation scheme Also, the base station apparatus uses SINR (Signal to Interference plus Noise Ratio), CQI (Channel A code modulation method is determined based on an index value of a radio wave state such as a Quality Indicator (RSS), a Received Signal Strength Indicator (RSSI), and an Arbitrary Strength Unit (ASU). Therefore, the radio condition information acquisition unit 11 can also acquire the index value of the radio wave condition from the base station device instead of the code modulation method, and calculate the transmission speed.

  Next, the session information acquisition unit 12 will be described in more detail. The session information acquisition unit 12 communicates from the data transmission device or the like when the wireless state information acquisition unit 11 acquires the first wireless state information, when the session information is updated, at predetermined time intervals, or at an arbitrary timing. Get session information for each session.

The session information is the first wireless state information acquired by the wireless state information acquiring unit 11, that is, information for each communication session related to the amount of staying data or / and wireless throughput. Specifically, for example, any one or more of the following information can be used as the information related to the staying data amount (hereinafter, the staying data amount related information).
An in_flight data amount indicating an amount of data that has been transmitted from each communication session of the data transmission device and has not received an acknowledgment (ACKnowledgement, ACK) packet; a congestion window controlled by each communication session; and a data transmission device. The reception window described in the ACK packet received by each communication session of the above. The transmission memory size of the kernel variable in each communication session of the data transmission device. The transmission buffer size set as a socket option in each communication session. Information on a communication session is extracted from a part of the data packet staying in the network by using an existing DPI (Deep Packet Inspection) method or the like, and the partial staying data of each communication session calculated based on this information is extracted. Quantity also related to wireless throughput Broadcast (hereinafter, wireless throughput-related information) as may be used, for example, any one or more of the information below.
-The amount of data packets confirmed to arrive at the user terminal by the ACK packet received in each communication session during a predetermined period-The throughput or available bandwidth of each communication session-The frequency band used by each communication session can be provided Partial wireless throughput of each communication session calculated from the upper limit value of the wireless band and the rate of increase / decrease of the partial data amount of each communication session Next, the wireless state information generation unit 13 will be described in more detail. When the wireless state information acquiring unit 11 newly acquires the wireless state information, when the session information acquiring unit 12 newly acquires the session information, the wireless state information generating unit 13 is provided at predetermined time intervals or at an arbitrary timing. , And generates second wireless state information for each communication session.

  Here, a method for generating the second wireless state information will be described. For example, when the first wireless state information is the staying data amount, the wireless state information generating unit 13 converts the staying data amount (second wireless state information) per communication session into the staying data amount related information (session information). Is generated such that the difference from the constant is constant.

  For example, it is assumed that there are three communication sessions of sessions A, B, and C destined for a user terminal, and the amount of data (first wireless state information) staying in the base station apparatus for the user terminal is 90 packets. . Further, it is assumed that the in_flight data amount (session information) for each communication session in the data transmitting apparatus is 20 packets for session A, 40 packets for session B, and 60 packets for session C.

  At this time, the staying data amount (second wireless state information) of each communication session is set so that the staying data amount (second wireless state information) of each communication session and the in_flight data amount (session information) have a fixed difference. ). The total amount of in_flight data is 20 + 40 + 60 = 120 packets, and the difference from the staying data amount is 120−90 = 30 packets. Since there are three communication sessions, 30/3 = 10 packets are defined as the difference between the amount of staying data and the amount of in_flight data in each communication session. Regarding the amount of staying data, the session A has 20-10 = 10 packets, the session B has 40-10 = 30 packets, and the session C has 60-10 = 50 packets.

  Further, it is also possible to generate the staying data amount (second wireless state information) for each communication session so that the ratio with the staying data amount related information (session information) becomes constant.

  For example, in the case of the state of the above-described example, the ratio of the total stay data amount and the total in_flight data amount is 90: 120 = 3: 4. Therefore, regarding the amount of staying data, the session A has 20 × 3 ÷ 4 = 15 packets, the session B has 40 × 3 ÷ 4 = 30 packets, and the session C has 60 × 3 ÷ 4 = 45 packets.

  Further, for example, the staying data amount for each communication session may be generated so as to have the same ratio as the ratio of the partial staying data amount of each communication session calculated by the session information acquisition unit 12.

  For example, it is assumed that there are three communication sessions of sessions A, B, and C destined for the user terminal, and the amount of data staying in the base station apparatus for the user terminal is 90 packets. Also, the session information acquisition unit 12 randomly extracts ten packets of staying data, and regarding the communication session of the ten packets of staying data, two packets are session A, three packets are session B, and five packets are session C. Assume. With respect to the amount of staying data, it is estimated that session A has 90 × 2 ÷ 10 = 18 packets, session B has 90 × 3 ÷ 10 = 27 packets, and session C has 90 × 5 ÷ 10 = 45 packets.

  Further, for example, it is also possible to estimate the amount of staying data for each communication session based on the amount of change from the situation where the amount of staying data related information of any one or more communication sessions becomes zero. More specifically, before and after any one or more communication sessions start communication, the amount of staying data of each user terminal is compared, and the increase is estimated as the amount of staying data of the communication session that started the communication. It is possible. Alternatively, temporarily stop data transmission to any one or more communication sessions, compare the amount of data remaining in each user terminal before and after the stop, and determine the decrease in the amount of data staying in the communication session in which data transmission was stopped. It is also conceivable to estimate the amount of data.

  Further, even when the wireless state information is wireless throughput and the session information is wireless throughput related information, it is possible to estimate wireless state information of each communication session in the same manner. When the wireless state information is the amount of staying data, wireless throughput related information may be used as session information, and when the wireless state is wireless throughput, the staying data amount related information may be used as session information.

  By configuring the communication device 10 in this manner, the communication device 10 generates and outputs second wireless state information in communication session units based on the first wireless state information and the session information. This allows the data transmitting apparatus to perform priority control and congestion control using the wireless state information in communication session units. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

  Further, in the present embodiment, since the data transmitting apparatus can perform priority control and congestion control based on wireless state information in communication session units, it is possible to improve the quality of experience of the user.

  Next, an operation example of the communication device 10 of the present embodiment will be described with reference to FIG.

  First, when the first radio condition information is notified from the base station device or the like, the radio condition information acquisition unit 11 transmits the first radio signal for each user terminal from the base station device or the like at predetermined time intervals or at an arbitrary timing. The wireless status information is obtained (step S101). Also, the session information acquisition unit 12 may be configured to transmit a data transmission device or the like at predetermined time intervals or at an arbitrary timing when the wireless status information acquisition unit 11 acquires the first wireless status information, when the session information is updated, The session information is acquired from (step S102).

  Then, the wireless state information generating unit 13 generates and outputs second wireless state information for each communication session based on the first wireless state information and the session information (Step S103). The timing at which the wireless state information generating unit 13 generates and outputs the second wireless state information is determined when the wireless state information acquiring unit 11 acquires the first wireless state information or when the session information acquiring unit 12 acquires the session information. It is when it acquired. The timing at which the wireless status information generating unit 13 generates and outputs the second wireless status information may be at predetermined time intervals or at an arbitrary timing.

  By operating in this manner, the communication device 10 generates and outputs second wireless state information for each communication session based on the first wireless state information and the session information. This allows the data transmitting apparatus to perform priority control and congestion control using the wireless state information in communication session units. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

  As described above, in the second embodiment of the present invention, similarly to the first embodiment, the communication device performs the second wireless status in communication session units based on the first wireless status information and the session information. Generate and output information. This allows the data transmitting apparatus to perform priority control and congestion control using the wireless state information in communication session units. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

  Further, in the present embodiment, since the data transmitting apparatus can perform priority control and congestion control based on wireless state information in communication session units, it is possible to improve the quality of experience of the user.

[Third embodiment]
Next, a third embodiment of the present invention will be described. In the present embodiment, the data transmitting apparatus generates second wireless state information and uses the second wireless state information for controlling the transmission data amount and controlling the data priority.

  First, FIG. 3 shows a configuration example of a communication system using the communication device 20 of the present embodiment.

  The communication device 20 is a data transmission device that establishes a connection such as TCP to the user terminal 70 and transmits data requested by the user terminal 70.

  The communication device 20 (data communication device) can be, for example, an origin server that holds data requested by a user. Further, for example, a relay server device, such as a cache server, a proxy server, or an edge server, which is installed in a network and terminates data communication between the origin server and the user terminal 70 once may be used.

  The base station device 50 is a device that transfers a packet transmitted from the communication device 20 (data transmission device) to the user terminal 70 via a wireless network. Also, the base station device 50 transfers the packet transmitted from the user terminal 70 via the wireless network to the communication device 20. For example, NodeB, eNodeB, and the like correspond to the base station device 50.

  The communication device 20 and the base station device 50 communicate via the network 80.

  In addition, the communication device 20 may be arranged in the middle of a route in which the origin server transmits data to the user terminal 70. In that case, another network or an origin server may be behind the communication device 20 as viewed from the base station device 50.

  Next, FIG. 4 shows a configuration example of the communication device 20 of the present embodiment. A data transmission / reception unit 24, a transmission data amount determination unit 25, a data priority determination unit 26, a connection setting storage unit 27, and a performance requirement storage unit 28 are added to the configuration example of the communication device 10 in FIG.

  The data transmitting / receiving unit 24 is a part that transmits a data packet to the user terminal 70 and receives an ACK packet from the user terminal 70.

  The wireless state information acquisition unit 11 is a part that acquires first wireless state information including one or more communication sessions, in this embodiment, first wireless state information for each user terminal 70. The wireless state information acquiring unit 11 acquires first wireless state information from the packet received by the data transmitting / receiving unit 24 from the base station device 50.

  The session information acquisition unit 12 is a part that acquires session information for each communication session. The session information acquisition unit 12 acquires session information from any one or more of the data transmission / reception unit 24, the transmission data amount determination unit 25, and the connection setting storage unit 27. The session information acquired from the data transmission / reception unit 24 is information obtained from the result of transmission / reception of the data packet and the ACK packet in the data transmission / reception unit 24. The session information acquired from the transmission data amount determination unit 25 is information on the upper limit value of the transmission data amount of each communication session determined by the transmission data amount determination unit 25.

  The wireless state information generating unit 13 generates second wireless state information for each communication session based on the first wireless state information acquired by the wireless state information acquiring unit 11 and the session information acquired by the session information acquiring unit 12. Output part.

  The transmission data amount determination unit 25 transmits the data transmitted by the data transmission / reception unit 24 based on the second wireless status information for each communication session generated by the wireless status information generation unit 13 and the performance requirement acquired from the performance requirement storage unit 28. This part determines the upper limit of the amount.

  The data priority determining unit 26 transmits the data transmitted by the data transmitting / receiving unit 24 based on the second wireless state information generated by the wireless state information generating unit 13 in units of communication sessions and the performance requirements acquired from the performance requirement storage unit 28. This part determines the priority of the packet.

  The connection setting storage unit 27 is a part that stores, as session information, information on the upper limit value of the data transmission amount of each communication session. The information on the upper limit of the data transmission amount is, for example, a transmission memory size set in the communication device 20 (data transmission device) or a transmission buffer size set in each communication session.

The performance requirement storage unit 28 is a part that stores performance requirements. The performance requirement is information on the transmission performance of a data packet transmitted by the communication device 20 (data transmission device). The performance requirements include, for example, any one or more of the following information on content that is simultaneously acquired and reproduced, such as moving images and audio.
-A reproduction bit rate-A predetermined allowable waiting time until the start of reproduction-A predetermined allowable waiting time until the completion of display of the content-A guaranteed value of a predetermined throughput-A guaranteed value of a predetermined delay When a data request message is received from the user terminal 70, a data packet is sent to the user terminal 70 according to the upper limit value of the transmission data amount determined by the transmission data amount determination unit 25 and the priority determined by the data priority determination unit 26. Send.

Next, a specific example of the session information acquired by the session information acquisition unit 12 from the data transmission / reception unit 24 will be described below. The session information acquisition unit 12 acquires one or more of these pieces of information from the data transmission / reception unit 24.
-In_flight data amount (data amount in which a data packet has been transmitted from the data transmission device (communication device 20) and the data transmission device has not received an ACK packet)
A reception window described in an ACK packet received by the data transmitting device (communication device 20); an amount of data packets confirmed to arrive at the user terminal 70 by the ACK packet received in a predetermined period. The following information may be included.
-Round trip delay time of communication between the communication device 20 and the user terminal 70-Time when the ACK packet is received-Maximum segment size-Duplicate ACK indicating loss or misorder of data packet
-Explicit Congestion Notification (ECN) message Also, the session information is the cumulative value, average value, variance, standard deviation, and maximum value of the observed values obtained from the observed values of the above information in the past fixed time. , The minimum value, or the difference value between the maximum value and the minimum value. Further, the above information may include information obtained by adding statistical processing such as a filter method or an exponential moving average for eliminating the influence of instantaneous fluctuation.

  Next, a method of determining the upper limit value of the transmission data amount in the transmission data amount determination unit 25 will be described. The transmission data amount determination unit 25 sets the upper limit value of the transmission data amount such that, for example, the second wireless state information (remaining data amount or wireless throughput) of each communication session falls within a preset target value or target range. Increase or decrease. More specifically, for example, when the staying data amount or the wireless throughput of a certain communication session is larger (smaller) than a target value or a target range, the upper limit value of the transmission data amount of the communication session is made smaller (larger). By doing so, it becomes possible to reduce the congestion degree of a congested communication session to reduce the congestion state, or to increase the congestion degree of a busy communication session to effectively use the transmission band. .

  In addition, when congestion occurs in the base station device 50, the transmission data amount determination unit 25 determines the transmission data amount in order from the communication session in which the second wireless state information (remaining data amount or wireless throughput) is large in communication session units. The upper limit may be reduced. By doing so, it becomes possible to reduce the congestion degree of a more congested communication session and reduce the congestion state. Also, at this time, since the upper limit of the transmission data amount is not reduced for a non-congested communication session, it is possible to improve the possibility that a new communication session can communicate.

  When the second wireless status information (remaining data amount or wireless throughput) of a specific communication session does not satisfy the performance requirement, the transmission data amount determination unit 25 sets the upper limit value of the transmission data amount of the communication session. May be increased. Alternatively, the upper limit value of the transmission data amount of a communication session other than the communication session may be reduced. By doing so, it is possible to increase the throughput of a communication session that does not satisfy the performance requirements and improve the quality of experience of the user.

  Next, a method of determining the priority in the data priority determining unit 26 will be described. The data priority determination unit 26 increases or decreases the priority of the data packet of each communication session, for example, such that the second wireless state information in communication session units falls within a preset target value or target range. More specifically, when the second radio condition information of a communication session is larger (smaller) than a target value or a target range, the priority of the data packet of the communication session is lowered (raised). By doing so, the priority of data packets of a congested communication session is reduced to reduce the congestion state, or the priority of data packets of a live communication session is increased to effectively use a transmission band. It becomes possible to do.

  Further, when congestion occurs in the base station device 50 to which the user terminal 70 is connected, the data priority determination unit 26 temporarily sets the priority of the data packet in order from the communication session with the largest second wireless state information. You may lower it. As a result, it is possible to reduce the priority of the data packet of the communication session which is estimated to have a high contribution rate to the congestion, and to reduce the congestion state.

  Further, when the second wireless state information of the specific communication session does not satisfy the performance requirement, the data priority determination unit 26 may temporarily increase the priority of the data packet of the communication session. This makes it possible to bring the wireless state information of the communication session closer to the performance requirement and improve the quality of experience of the user.

  Next, FIG. 5 shows a configuration example of the base station device 50. The base station device 50 includes a data transmitting / receiving unit 51, a staying data amount storage unit 52, and a wireless throughput storage unit 53. The base station device 50 of the present embodiment notifies the communication device 20 of the amount of staying data and the wireless throughput as the first wireless state.

  The staying data amount storage unit 52 is a part that stores the staying data amount for each user terminal 70. The wireless throughput storage unit 53 is a part that stores the wireless throughput for each user terminal 70.

  The data transmission / reception unit 51 is a part that transfers a packet transmitted from the data transmission device (communication device 20) to the user terminal 70, and transfers a packet transmitted from the user terminal 70 to the data transmission device. Also, the amount of staying data for each user terminal 70 is obtained from the staying data amount storage unit 52, the wireless throughput for each user terminal 70 is obtained from the wireless throughput storage unit 53, and the first wireless state information is sent to the data transmitting device. Notice.

  Next, an example of the first wireless state information notification method will be described. For example, by using a communication session for transmitting and receiving a data packet and an ACK packet established between the data transmitting device (communication device 20) and the user terminal 70, the base station device 50 can communicate with the communication device 20 first. Wireless status information can be notified. Specifically, when the ACK packet transmitted from the user terminal 70 to the communication device 20 passes through the base station device 50, the data transmission / reception unit 51 embeds the first wireless status information in the header of the ACK packet. Then, when receiving the ACK packet, the data transmitting / receiving unit 24 of the communication device 20 acquires the first wireless state information from the header of the ACK packet.

  In addition, the notification method of the wireless state information may be a method of using a notification session different from a communication session established between the communication device 20 and the user terminal 70, for example. Specifically, a notification session for notifying the first wireless state information is newly established between the data transmission / reception unit 51 of the base station device 50 and the data transmission / reception unit 24 of the communication device 20. Then, the data transmission / reception unit 51 notifies the data transmission / reception unit 24 of the first wireless state information using the notification session.

  By configuring the communication device 20 in this manner, the communication device 20 generates and outputs second wireless state information for each communication session based on the first wireless state information and the session information. This allows the data transmitting apparatus to perform priority control and congestion control using the wireless state information in communication session units. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

  Further, the data transmission device (communication device) of the present embodiment determines the upper limit of the amount of transmission data and the priority of the transmission packet based on the second wireless state information in communication session units. Therefore, the data communication device can perform appropriate congestion control and priority control for each communication session.

  Next, FIG. 6 shows an operation example of the communication device 20. FIG. 7 shows an operation example of the base station device 50.

  First, the data transmitting / receiving unit 51 of the base station device 50 acquires the first wireless state information for each user terminal 70 and notifies the communication device 20 of the first wireless state information (Step S301 in FIG. 7). In the present embodiment, the base station device 50 notifies, as the first wireless state information, the amount of stay data acquired from the stay data amount storage unit 52 and the wireless throughput acquired by the wireless throughput storage unit 53. Step S301 can be performed at predetermined time intervals or at an arbitrary timing when the first wireless state information for each user terminal 70 is updated.

  Next, when the data transmission / reception unit 24 of the communication device 20 receives the first wireless status information from the base station device 50 (YES in step S201 of FIG. 6), the wireless status information acquisition unit 11 transmits the first wireless status Information is acquired from the data transmitting / receiving unit 24 (step S202).

  Further, when the data transmitting / receiving unit 24 receives the ACK packet from the user terminal 70, the session information acquiring unit 12 acquires the session information at predetermined time intervals or at an arbitrary timing (step S203). The session information can be acquired from any one or more of the data transmission / reception unit 24, the transmission data amount determination unit 25, and the connection setting storage unit 27. The session information that can be obtained from the data transmission / reception unit 24 is session information obtained from the result of the data transmission / reception unit 24 transmitting and receiving a data packet and an ACK packet.

  The wireless state information generating unit 13 generates second wireless state information for each communication session based on the first wireless state information and the session information. Then, the generated second wireless state information is output to the transmission data amount determination unit 25 and the data priority determination unit 26 (Step S204). Step S204 can be performed at predetermined time intervals or at an arbitrary timing when the wireless condition information acquiring unit 11 acquires the first wireless condition information, or when the session information acquiring unit 12 acquires the session information. is there.

  The transmission data amount determination unit 25 determines an upper limit value of the data amount transmitted by the data transmission / reception unit 24 based on the second wireless state information and the performance requirement in communication session units (step S205). In step S205, when the wireless status information generating unit 13 generates and outputs the second wireless status information, when the data transmitting / receiving unit 24 receives the ACK packet from the user terminal 70, every predetermined time, or at an arbitrary timing It is possible to do.

  The data priority determination unit 26 determines the priority of the data packet transmitted by the data transmission / reception unit 24 based on the second wireless state information and the performance requirement for each communication session (step S206). In step S206, when the wireless state information generating unit 13 generates and outputs the second wireless state information in communication session units, when the data transmitting / receiving unit 24 receives an ACK packet from the user terminal 70, every predetermined time, or , At any time.

  Then, the data transmission / reception unit 24 transmits the data packet of the requested data to the user terminal 70 according to the upper limit value of the transmission data amount determined by the transmission data amount determination unit 25 and the priority determined by the data priority determination unit 26. (Step S207).

  By operating in this manner, the communication device 20 generates and outputs second wireless state information for each communication session based on the first wireless state information and the session information. This allows the data transmitting apparatus to perform priority control and congestion control using the wireless state information in communication session units. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

  As described above, in the third embodiment of the present invention, similar to the first and second embodiments, the communication device performs the second communication session unit based on the first wireless state information and the session information. And generates and outputs wireless status information. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

  Further, the data transmission device (communication device) of the present embodiment determines the upper limit of the amount of transmission data and the priority of the transmission packet based on the second wireless state information in communication session units. Therefore, the data communication device can perform appropriate congestion control and priority control for each communication session.

[Fourth embodiment]
Next, a fourth embodiment of the present invention will be described. In the present embodiment, the base station apparatus generates second wireless state information in communication session units and outputs the second wireless state information to the data transmitting apparatus.

  First, FIG. 8 shows a configuration example of a communication system using the communication device 30 of the present embodiment. In FIG. 3, the data transmission device is the communication device 20 of the second embodiment, whereas in FIG. 8, the base station device is the communication device 30 of the present embodiment.

  The data transmitting device 60 is a device that establishes a connection such as TCP to the user terminal 70 and transmits data requested by the user terminal 70.

  The base station device (the communication device 30 in the present embodiment) is a device that transfers a data packet transmitted from the data transmission device 60 to the user terminal 70 via a wireless network. In addition, the communication device 30 transfers the ACK packet transmitted from the user terminal 70 via the wireless network to the data transmission device 60.

  Next, FIG. 9 shows a configuration example of the communication device 30 of the present embodiment. In the configuration example of FIG. 9, a radio status information acquisition unit 11, a session information acquisition unit 12, and a radio status information generation unit 13 are added to the configuration example of the base station device 50 of FIG.

  The data transmitting / receiving unit 51 is a part that transfers a data packet received from the data transmitting device 60 to the user terminal 70 and transfers an ACK packet received from the user terminal 70 to the data transmitting device 60. In addition, the data transmission / reception unit 51 notifies the data transmission device 60 of the second wireless state information generated by the wireless state information generating unit 13 for each communication session.

  The wireless state information acquisition unit 11 is a part that acquires first wireless state information for each user terminal 70. In the present embodiment, the wireless state information acquisition unit 11 acquires the first wireless state information from the staying data amount storage unit 52 and the wireless throughput storage unit 53.

  The session information acquisition unit 12 is a unit for the data transmission / reception unit 51 to acquire session information for each communication session from a packet received from the data transmission device 60.

  The wireless state information generation unit 13 converts the second wireless state information in communication session units based on the first wireless state information acquired by the wireless state information acquisition unit 11 and the session information acquired by the session information acquisition unit 12. This is the part to generate. Further, it outputs the generated second wireless state information for each communication session to the data transmitting device 60.

  The staying data amount storage unit 52 is a part that stores the staying data amount for each user terminal 70. The wireless throughput storage unit 53 is a part that stores the wireless throughput for each user terminal 70.

  Next, an example of an output format (format) of the second wireless state information in communication session units will be described. The wireless status information generation unit 13 outputs the second wireless status information to the data transmitting device 60 in a format that is easy to transmit.

  For example, the wireless state information generating unit 13 lists and outputs one or more combinations of information (for example, a TCP port number or the like) that can identify a communication session and second wireless state information in communication session units. For example, there are three communication sessions having the destination of the user terminal 70 as sessions A, B, and C, and the amount of staying data per communication session is 10 packets for session A, 30 packets for session B, and 50 packets for session C. Assume that At this time, the wireless status information generating unit 13 enumerates and outputs “port numbers A, 10”, “port numbers B, 30”, and “port numbers C, 50”.

  Further, the wireless state information generation unit 13 may compress and output the data size by simplifying the relationship (difference, ratio, etc.) of the second wireless state information in communication session units. For example, in the case of the above-described example, the wireless state information generation unit 13 enumerates and outputs “port numbers A, 1”, “port numbers B, 3”, and “port numbers C, 5”.

  In addition, the wireless state information generation unit 13 may compress and output the data size by simplifying the relationship (difference, ratio, or the like) between the second wireless state information and the session information in communication session units. For example, there are three communication sessions with the user terminal 70 as destinations, sessions A, B, and C. The in_flight data amount in communication session units is 20 packets for session A, 40 packets for session B, and 60 packets for session C. Assume that It is also assumed that the amount of staying data per communication session is 10 packets for session A, 30 packets for session B, and 50 packets for session C. At this time, the wireless status information generation unit 13 outputs information indicating that “the difference between the in_flight data amount and the staying data amount of each communication session is 10 packets”.

  Next, FIG. 10 shows a configuration example of the data transmission device 60. The wireless state information acquisition unit 11, the session information acquisition unit 12, and the wireless state information generation unit 13 are deleted from the communication device 20 (data transmission device) in FIG.

  The data transmitting / receiving unit 24 transmits a data packet of requested data to the user terminal 70 via the communication device 30 and receives an ACK packet from the user terminal 70 via the communication device 30 in accordance with a request from the user terminal 70. It is.

  Further, in the present embodiment, the data transmitting / receiving unit 24 transmits the session information acquired from at least one of the data transmitting / receiving unit 24, the transmission data amount determining unit 25, and the connection setting storage unit 27 to the data transmitting / receiving unit of the communication device 30. Send to 51.

  Further, the data transmitting / receiving unit 24 receives, from the data transmitting / receiving unit 51 of the communication device 30, the second wireless status information generated by the wireless status information generating unit 13 of the communication device 30 for each communication session.

  By configuring the communication device 30 in this way, the communication device 30 generates and outputs second wireless state information in communication session units based on the first wireless state information and the session information. This allows the data transmitting apparatus to perform priority control and congestion control using the wireless state information in communication session units. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

  In addition, the data transmission device of the present embodiment determines the upper limit value of the transmission data amount and the priority of the transmission packet based on the second wireless state information for each communication session. Therefore, the data communication device can perform appropriate congestion control and priority control for each communication session.

  Next, FIG. 11 shows an operation example of the communication device 30 of the present embodiment, and FIG. 12 shows an operation example of the data transmission device 60.

  When receiving the ACK packet from the user terminal 70, the data transmitting / receiving unit 24 of the data transmitting device 60 acquires the session information at predetermined time intervals or at an arbitrary timing. The data transmission / reception unit 24 acquires session information from any one or more of the data transmission / reception unit 24 itself, the transmission data amount determination unit 25, and the connection setting storage unit 27. Then, the data transmitting / receiving unit 24 transmits the acquired session information to the communication device 30 (Step S501 in FIG. 12).

  Next, when the data transmission / reception unit 51 of the communication device 30 receives the session information from the data transmission device 60 (YES in step S401 in FIG. 11), the session information acquisition unit 12 acquires the session information from the data transmission / reception unit 24. (Step S402).

  When the data transmitting / receiving unit 51 receives the session information, when the first wireless status information for each user terminal 70 is updated, at predetermined time intervals, or at an arbitrary timing, the wireless status information obtaining unit 11 of the communication device 30 Acquires the first wireless state information (step S403). In the present embodiment, the wireless state information acquisition unit 11 stores the amount of data stored for each user terminal 70 from the stored data amount storage unit 52 and the wireless throughput for each user terminal 70 as the first wireless state information. Acquired from 53.

  When the data transmitting / receiving unit 51 receives the session information, the first wireless state information is updated, at predetermined time intervals, or at an arbitrary timing, the wireless state information generating unit 13 of the communication device 30 sets the communication session unit Is generated. At this time, the wireless state information generating unit 13 generates second wireless state information based on the session information and the first wireless state information. Further, the wireless state information generating unit 13 outputs the generated second wireless state information to the data transmitting / receiving unit 51. Then, the data transmitting / receiving unit 51 transmits the second wireless status information to the data transmitting / receiving unit 24 of the data transmitting device 60 (Step S404).

  The data transmission / reception unit 24 of the data transmission device 60 receives the second wireless status information in communication session units from the communication device 30 (YES in step S502 in FIG. 12). Then, when the data transmission / reception unit 24 receives the second wireless state information, the transmission data amount determination unit 25 and the data priority determination unit 26 acquire the second wireless state information from the data transmission / reception unit 24 (step S503). ).

  The transmission data amount determination unit 25 determines the transmission data amount at predetermined time intervals or at an arbitrary timing when the data transmission / reception unit 24 receives an ACK packet from the user terminal 70 when acquiring the second wireless state information. The upper limit is determined (step S504). At this time, the transmission data amount determination unit 25 determines the upper limit of the data amount transmitted by the data transmission / reception unit 24 based on the second wireless state information and the performance requirements.

  Further, the data priority determination unit 26 receives the ACK packet from the user terminal 70 when the second wireless state information is acquired, or when the data transmission / reception unit 24 receives the ACK packet from the user terminal 70, at predetermined time intervals or at an arbitrary timing. Is determined (step S505). At this time, the data priority determination unit 26 determines the priority of the data packet transmitted by the data transmission / reception unit 24 based on the second wireless state information and the performance requirement.

  Then, the data transmission / reception unit 24 transmits the data packet of the requested data to the user terminal 70 according to the upper limit value of the transmission data amount determined by the transmission data amount determination unit 25 and the priority determined by the data priority determination unit 26. (Step S506).

  By operating in this manner, the communication device 30 generates and outputs second wireless state information for each communication session based on the first wireless state information and the session information. This allows the data transmitting apparatus to perform priority control and congestion control using the wireless state information in communication session units. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

  As described above, in the fourth embodiment of the present invention, similar to the first to third embodiments, the communication device performs the second communication session unit based on the first wireless state information and the session information. And generates and outputs wireless status information. Therefore, it becomes possible for the data transmitting apparatus to perform control relating to data transmission based on the wireless state information in communication session units.

  In addition, the data transmission device of the present embodiment determines the upper limit value of the transmission data amount and the priority of the transmission packet based on the second wireless state information for each communication session. Therefore, the data communication device can perform appropriate congestion control and priority control for each communication session.

[Example of hardware configuration]
A configuration example of hardware resources that realizes the communication device (10, 20, 30) in each embodiment of the present invention using one information processing device (computer) will be described. The communication device may be realized physically or functionally using at least two information processing devices. Further, the communication device may be realized as a dedicated device. Alternatively, only some of the functions of the communication device may be realized using the information processing device.

  FIG. 13 is a diagram schematically illustrating a hardware configuration example of an information processing device capable of realizing the communication device according to each embodiment of the present invention. The information processing device 90 includes a communication interface 91, an input / output interface 92, a computing device 93, a storage device 94, a non-volatile storage device 95, and a drive device 96.

  The communication interface 91 is communication means for the communication device of each embodiment to communicate with an external device by wire or / and wirelessly. When the communication device is realized by using at least two information processing devices, the devices may be connected to each other via the communication interface 91 so that they can communicate with each other.

  The input / output interface 92 is a man-machine interface such as a keyboard as an example of an input device and a display as an output device.

  The arithmetic unit 93 is an arithmetic processing unit such as a general-purpose CPU (Central Processing Unit) or a microprocessor. The arithmetic unit 93 can read various programs stored in the non-volatile storage device 95 into the storage device 94 and execute processing according to the read programs.

  The storage device 94 is a memory device such as a RAM (Random Access Memory) that can be referred to by the arithmetic device 93, and stores programs, various data, and the like. The storage device 94 may be a volatile memory device.

  The non-volatile storage device 95 is a non-volatile storage device such as a ROM (Read Only Memory), a flash memory, and the like, and can record various programs and data.

  The drive device 96 is, for example, a device that processes reading and writing of data from and to a recording medium 97 described later.

  The recording medium 97 is any recording medium that can record data, such as an optical disk, a magneto-optical disk, and a semiconductor flash memory.

  In each embodiment of the present invention, for example, a communication device is configured by the information processing device 90 illustrated in FIG. 13, and a program capable of realizing the functions described in each of the above embodiments is supplied to the communication device. May be realized.

  In this case, the embodiment can be realized by the arithmetic device 93 executing the program supplied to the communication device. Further, not all of the communication devices but some of the functions can be configured by the information processing device 90.

  Further, the program may be recorded on the recording medium 97, and the program may be stored in the non-volatile storage device 95 as appropriate at the stage of shipping or operating the communication device. In this case, as a method for supplying the program, a method of installing the program in a communication device using an appropriate jig at a manufacturing stage or an operation stage before shipment may be adopted. The program may be supplied by a general procedure such as a method of externally downloading the program via a communication line such as the Internet.

  Each of the above-described embodiments is a preferred embodiment of the present invention, and various modifications can be made without departing from the spirit of the present invention.

  Some or all of the above embodiments can be described as in the following supplementary notes, but are not limited to the following.

(Appendix 1)
Includes one or more communication sessions, which is information about the degree of congestion of wireless communication or the quality of communication quality, a wireless state information acquisition unit that acquires first wireless state information,
A session information acquisition unit that acquires session information for each communication session;
A communication apparatus comprising: a wireless state information generating unit configured to generate and output second wireless state information for each communication session based on the first wireless state information and the session information.

(Appendix 2)
The first wireless state information is, in communication addressed to the same user terminal, the amount of data packets staying in the base station device, the throughput between the base station device and the user terminal, the base station 2. The communication device according to claim 1, wherein the communication device includes at least one of a transmission speed calculated from information on the number of radio bands or resource blocks allocated to the device and / or a code modulation method, and an index value of a radio wave state. .

(Appendix 3)
The session information, in each of the communication sessions, data packets have been transmitted from the data transmitting device, and the acknowledgment packet has not been received data amount, congestion window, reception window, the data transmission amount of each communication session Information on the upper limit value, a partial data amount for each communication session calculated based on a part of the data packets staying in the base station device, and a confirmation response packet received in a predetermined period to the user terminal. The communication device according to claim 1 or 2, wherein the communication device includes at least one of a measurement result of an amount, a throughput, and an available bandwidth of the data packet whose arrival has been confirmed.

(Appendix 4)
The wireless condition information generating unit performs the generation of the second wireless condition information based on a difference or a ratio between the second wireless condition information and the session information. Supplementary notes 1 to 3 The communication device according to any one of the above.

(Appendix 5)
The session information is a partial staying data amount for each communication session calculated based on a part of data packets staying in the base station device,
The wireless status information generating unit performs the generation of the second wireless status information based on a partial ratio of the amount of staying data for each communication session. The communication device according to claim 1.

(Appendix 6)
The wireless state information generation unit performs the generation of the second wireless state information based on a difference between the first wireless state information before and after starting or stopping some of the communication sessions. 3. The communication device according to any one of Supplementary Notes 1 to 3.

(Appendix 7)
The radio condition information acquisition unit performs the acquisition of the first radio condition information by acquiring the first radio condition information from a packet received from a base station device. 7. The communication device according to any one of 6.

(Appendix 8)
The session information acquisition unit performs the acquisition of the session information by acquiring the session information from a packet received from a data transmission device,
The communication device according to any one of supplementary notes 1 to 7, wherein the radio condition information generation unit performs the output of the second radio condition information to the data transmitting device.

(Appendix 9)
The wireless state information generation unit, in the form of a difference or ratio of the second wireless state information during the communication session, or in the form of a difference or ratio between the second wireless state information and the session information, The communication device according to claim 8, wherein the output of the second wireless state information is performed.

(Appendix 10)
The wireless status information generating unit performs the output of the second wireless status information to the data transmitting device by embedding the second wireless status information in the packet transmitted and received with the data transmitting device, or 10. The communication device according to claim 8 or 9, wherein the communication is performed using a notification session different from the communication session established with the data transmission device.

(Appendix 11)
The communication device according to claim 7, further comprising: a transmission data amount determining unit that determines an upper limit value of a transmission data amount of a data packet to be transmitted based on the second wireless state information.

(Appendix 12)
The communication device according to Supplementary Note 7 or 11, further comprising a data priority determining unit that determines a priority of a data packet to be transmitted based on the second wireless state information.

(Appendix 13)
A transmission data amount determining unit that receives the second wireless state information in communication session units and determines an upper limit value of the transmitted data amount of the data packet to be transmitted based on the second wireless state information. Data transmission device.

(Appendix 14)
14. The data transmitting apparatus according to claim 13, further comprising: a data priority determining unit that determines a priority of the data packet to be transmitted based on the second wireless state information.

(Appendix 15)
A data transmission device, comprising: a data priority determining unit that receives second wireless state information for each communication session and determines a priority of a data packet to be transmitted based on the second wireless state information.

(Appendix 16)
Includes one or more communication sessions, is information on the quality of wireless communication congestion or the quality of communication quality, to obtain the first wireless state information,
Acquiring session information for each communication session,
A communication method comprising: generating and outputting second wireless state information for each communication session based on the first wireless state information and the session information.

(Appendix 17)
The first wireless state information is, in communication addressed to the same user terminal, the amount of data packets staying in the base station device, the throughput between the base station device and the user terminal, the base station 17. The communication method according to claim 16, further comprising at least one of a transmission rate calculated from information on the number of radio bands or resource blocks allocated in the apparatus and / or information on a code modulation method, and an index value of a radio wave state. .

(Appendix 18)
The session information, in each of the communication sessions, data packets have been transmitted from the data transmitting device, and the acknowledgment packet has not been received data amount, congestion window, reception window, the data transmission amount of each communication session Information on the upper limit value, a partial data amount for each communication session calculated based on a part of the data packets staying in the base station device, and a confirmation response packet received in a predetermined period to the user terminal. 18. The communication method according to Supplementary Note 16 or 17, wherein the communication method includes at least one of a measurement result of the amount, throughput, or available bandwidth of the data packet whose arrival has been confirmed.

(Appendix 19)
The communication method according to any one of supplementary notes 16 to 18, wherein the generation of the second wireless status information is performed based on a difference or a ratio between the second wireless status information and the session information. .

(Appendix 20)
The session information is a partial staying data amount for each communication session calculated based on a part of data packets staying in the base station device,
The communication method according to any one of Supplementary Notes 16 to 18, wherein the generation of the second wireless state information is performed based on a ratio of the partial data amount remaining for each communication session. Communication method.

(Appendix 21)
The generation of the second wireless state information is performed based on a difference between the first wireless state information before and after starting or stopping some of the communication sessions. Communication method according to any of the above.

(Appendix 22)
The communication according to any one of supplementary notes 16 to 21, wherein the acquisition of the first radio condition information is performed by obtaining the first radio condition information from a packet received from a base station device. Method.

(Appendix 23)
The acquisition of the session information is performed by acquiring the session information from a packet received from a data transmission device,
23. The communication method according to any one of supplementary notes 16 to 22, wherein the output of the second wireless state information is performed toward the data transmitting apparatus.

(Appendix 24)
In the form of a difference or ratio of the second radio condition information during the communication session, or in the form of a difference or ratio between the second radio condition information and the session information, 24. The communication method according to supplementary note 23, wherein the outputting is performed.

(Appendix 25)
The output of the second radio status information to the data transmission device is performed by embedding the second radio status information in the packet transmitted to and received from the data transmission device, or between the data transmission device 25. The communication method according to supplementary note 23 or supplementary note 24, wherein the communication method is performed using a notification session different from the communication session set in the communication session.

(Supplementary Note 26)
23. The communication method according to claim 22, wherein an upper limit value of a transmission data amount of a data packet to be transmitted is determined based on the second wireless state information.

(Appendix 27)
27. The communication method according to Supplementary Note 22 or 26, wherein a priority of a data packet to be transmitted is determined based on the second wireless state information.

(Appendix 28)
A data transmission method, comprising: receiving second wireless state information for each communication session, and determining an upper limit of a transmission data amount of a data packet to be transmitted based on the second wireless state information.

(Appendix 29)
29. The data transmission method according to claim 28, wherein a priority of the data packet to be transmitted is determined based on the second wireless state information.

(Appendix 30)
A data transmission method, comprising: receiving second wireless state information for each communication session, and determining a priority of a data packet to be transmitted based on the second wireless state information.

(Appendix 31)
On the computer,
Includes one or more communication sessions, which is information about the degree of congestion of wireless communication or the quality of communication quality, a wireless state information acquisition function for acquiring first wireless state information,
A session information acquisition function for acquiring session information for each communication session;
A communication program for realizing a wireless state information generating function of generating and outputting second wireless state information for each communication session based on the first wireless state information and the session information.

(Supplementary Note 32)
The first wireless state information is, in communication addressed to the same user terminal, the amount of data packets staying in the base station device, the throughput between the base station device and the user terminal, the base station 32. The communication program according to claim 31, wherein the communication program includes at least one of a transmission rate and an index value of a radio wave state calculated from information on the number of radio bands or resource blocks allocated in the apparatus and / or code modulation scheme. .

(Appendix 33)
The session information, in each of the communication sessions, data packets have been transmitted from the data transmitting device, and the acknowledgment packet has not been received data amount, congestion window, reception window, the data transmission amount of each communication session Information on the upper limit value, the amount of staying data for each communication session calculated based on one function of the data packet staying in the base station device, and the acknowledgment packet received during a predetermined period to the user terminal. 33. The communication program according to Supplementary Note 31 or 32, further comprising at least one of a measurement result of an amount, a throughput, and an available bandwidth of the data packet whose arrival has been confirmed.

(Appendix 34)
The wireless condition information generating function performs the generation of the second wireless condition information based on a difference or a ratio between the second wireless condition information and the session information. Supplementary notes 31 to 33, wherein A communication program according to any of the above.

(Appendix 35)
The session information is a function-based data retention amount for each communication session calculated based on one function of data packets retained in the base station device,
The wireless status information generating function according to any one of Supplementary Notes 31 to 33, wherein the second wireless status information is generated based on a ratio of the amount of the staying data according to a function for each communication session. Communication program described in Crab.

(Appendix 36)
The wireless state information generating function performs the generation of the second wireless state information based on a difference between the first wireless state information before and after the start or stop of the communication session of one function. 34. The communication program according to any one of Supplementary Notes 31 to 33.

(Appendix 37)
The wireless condition information acquisition function performs the acquisition of the first wireless condition information by acquiring the first wireless condition information from a packet received from a base station device. 36. The communication program according to any one of 36.

(Appendix 38)
The session information acquisition function performs the acquisition of the session information by acquiring the session information from a packet received from a data transmission device,
38. The communication program according to any one of Supplementary Notes 31 to 37, wherein the wireless state information generation function performs the output of the second wireless state information to the data transmission device.

(Appendix 39)
The wireless state information generation function, in the form of a difference or ratio of the second wireless state information during the communication session, or in the form of a difference or ratio between the second wireless state information and the session information, 39. The communication program according to supplementary note 38, wherein the output of the second wireless state information is performed.

(Appendix 40)
The wireless status information generating function performs the output of the second wireless status information to the data transmitting device by embedding the second wireless status information in the packet transmitted and received with the data transmitting device, or 40. The communication program according to supplementary note 38 or 39, wherein the communication program is performed using a notification session different from the communication session set up with the data transmission device.

(Appendix 41)
38. The communication program according to claim 37, further causing the computer to realize a transmission data amount determination function of determining an upper limit value of a transmission data amount of a data packet to be transmitted based on the second wireless state information.

(Appendix 42)
42. The communication program according to Supplementary note 37 or 41, further causing the computer to implement a data priority determination function of determining a priority of a data packet to be transmitted based on the second wireless state information.

(Supplementary Note 43)
On the computer,
Receiving the second wireless state information in communication session units, and realizing a transmission data amount determining function of determining an upper limit value of a transmission data amount of a data packet to be transmitted based on the second wireless state information. Data transmission program to do.

(Appendix 44)
44. The data transmission program according to claim 43, further causing the computer to implement a data priority determination function of determining a priority of the data packet to be transmitted based on the second wireless state information.

(Appendix 45)
On the computer,
A data transmission program for realizing a data priority determining function of receiving second wireless state information in communication session units and determining a priority of a data packet to be transmitted based on the second wireless state information. .

(Appendix 46)
A computer-readable recording medium recording the communication program according to any one of Supplementary Notes 31 to 42.

(Appendix 47)
A computer-readable recording medium recording the data transmission program according to any one of Supplementary Note 43 to Supplementary Note 45.

10, 20, 30 Communication device 11 Radio status information acquisition unit 12 Session information acquisition unit 13 Radio status information generation unit 24 Data transmission / reception unit 25 Transmission data amount determination unit 26 Data priority determination unit 27 Connection setting storage unit 28 Performance requirement storage unit Reference Signs List 50 base station device 51 data transmission / reception unit 52 staying data amount storage unit 53 wireless throughput storage unit 60 data transmission device 70 user terminal 80 network 90 information processing device 91 communication interface 92 input / output interface 93 arithmetic device 94 storage device 95 non-volatile storage device 96 drive device 97 recording medium

Claims (10)

Includes one or more communication sessions, which is information about the degree of congestion of wireless communication or the quality of communication quality, a wireless state information acquisition unit that acquires first wireless state information,
A session information acquisition unit that acquires session information for each communication session;
A wireless state information generating unit that generates and outputs second wireless state information of the communication session unit based on the first wireless state information and the session information;
With
The session information is a partial staying data amount for each communication session calculated based on a part of data packets staying in the base station device,
The wireless state information generating unit performs the generation of the second wireless state information based on a ratio of the partial amount of the staying data for each communication session.
Communication device you wherein a. Includes one or more communication sessions, which is information about the degree of congestion of wireless communication or the quality of communication quality, a wireless state information acquisition unit that acquires first wireless state information,
A session information acquisition unit that acquires session information for each communication session;
A wireless state information generating unit that generates and outputs second wireless state information of the communication session unit based on the first wireless state information and the session information;
With
The wireless state information generation unit performs the generation of the second wireless state information based on a difference between the first wireless state information before and after starting or stopping some of the communication sessions.
Communication device you wherein a. The wireless condition information acquisition unit performs the acquisition of the first wireless condition information by acquiring the first wireless condition information from a packet received from a base station device.
The communication device according to claim 1 or 2 , wherein: The session information acquisition unit performs the acquisition of the session information by acquiring the session information from a packet received from a data transmission device,
The radio condition information generation unit, a communication device according to any one of claims 3 to said output of said second wireless state information from the claim 1, characterized in that toward the data transmission device. The wireless state information generation unit, in the form of a difference or ratio of the second wireless state information during the communication session, or in the form of a difference or ratio between the second wireless state information and the session information, The communication device according to claim 4 , wherein the output of the second wireless state information is performed. A transmission data amount determining unit that determines an upper limit value of the transmission data amount of the data packet to be transmitted based on the second wireless state information, and / or a priority of the data packet to be transmitted to the second wireless state information The communication device according to claim 3 , further comprising a data priority determination unit that determines based on the data priority. Includes one or more communication sessions, is information on the quality of wireless communication congestion or the quality of communication quality, to obtain the first wireless state information,
Acquiring session information for each communication session,
Based on the first wireless state information and the session information to generate and output second wireless state information of the communication session unit ,
The session information is a partial staying data amount for each communication session calculated based on a part of data packets staying in the base station device,
The communication method according to claim 1, wherein, in generating the second wireless state information, the second wireless state information is generated based on a partial ratio of the amount of staying data for each communication session .   Includes one or more communication sessions, is information on the quality of wireless communication congestion or the quality of communication quality, to obtain the first wireless state information,
  Acquiring session information for each communication session,
  Based on the first wireless state information and the session information to generate and output second wireless state information of the communication session unit,
  In the generation of the second wireless state information, the generation of the second wireless state information is performed based on a difference between the first wireless state information before and after a part of the communication session is started or stopped. A communication method, comprising: On the computer,
Includes one or more communication sessions, which is information about the degree of congestion of wireless communication or the quality of communication quality, a wireless state information acquisition function for acquiring first wireless state information,
A session information acquisition function for acquiring session information for each communication session;
A wireless state information generating function of generating and outputting second wireless state information for each communication session based on the first wireless state information and the session information, and
The session information is a partial staying data amount for each communication session calculated based on a part of data packets staying in the base station device,
The communication program according to claim 1, wherein the wireless status information generating function performs the generation of the second wireless status information based on a ratio of the partial amount of the staying data for each communication session .   On the computer,
  Includes one or more communication sessions, which is information about the degree of congestion of wireless communication or the quality of communication quality, a wireless state information acquisition function for acquiring first wireless state information,
  A session information acquisition function for acquiring session information for each communication session;
  A wireless state information generating function of generating and outputting second wireless state information of the communication session unit based on the first wireless state information and the session information;
  To realize
  In the wireless state information generation function, the generation of the second wireless state information is performed based on a difference between the first wireless state information before and after starting or stopping some of the communication sessions. And a communication program.

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