JP2017220845A - Communication apparatus, method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve control of data transmission by a data transmission apparatus on the basis of radio state information of communication session unit.SOLUTION: The communication method includes: acquiring first radio state information, which is the information including at least one communication session and relating to the magnitude of the degree of congestion of radio communication or communication quality; acquiring session information for each communication session; and generating and outputting second radio state information of the communication session unit on the basis of the first radio state information and the session information.SELECTED DRAWING: Figure 1

Description

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

  In recent years, with the improvement of processing performance and resolution of mobile terminals and the development of elemental technologies for handling various types of media information, it has become possible to enjoy rich media information delivery anytime and anywhere from mobile terminals. Such lifestyles have become widespread, and mobile communication technologies such as LTE (Long Term Evolution) and LTE-A (LTE Advanced) are spreading and expanding as high-speed mobile environments that support the 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 eNodeB in order to absorb the influence of band fluctuation in a wireless network. In addition, ARQ (Automatic Repeat reQuest) technology in the RLC (Radio Link Control) layer and HARQ (Hybrid ARQ) technology in the MAC (Media Access Control) layer perform retransmission in the lower layer when a bit error occurs in the radio section. Repair the data. For this reason, packet corruption hardly occurs in layers higher than the network layer.

  On the other hand, in the TCP (Transmission Control Protocol), which is a transport layer protocol widely used in both wired and wireless data communications, a loss-based congestion control method is often used. Loss-based congestion control methods determine that congestion (network congestion) has occurred when packet loss is detected, as represented by CUBIC TCP (Non-patent Document 1) and TCP NewReno (Non-patent Document 2). Thus, the transmission rate is reduced.

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

  If a packet loss occurs after cwnd becomes enormous, the amount of data that can be transmitted continuously after retransmission of the lost packet decreases, and data transmission may stop. If data transmission is stopped due to packet loss, TCP throughput decreases, playback of streaming content such as video and audio is interrupted, and the quality of experience of the user is significantly impaired.

  Also, in mobile communication, packet loss occurs even when the network is not congested when the user terminal moves into the edge of a cell or behind a building or during handover processing as the user moves. Sometimes. However, in the loss-based congestion control method, when packet loss occurs, even if the network is not congested, cwnd is unnecessarily lowered to suppress the transmission data amount. Therefore, it leads to a decrease in TCP throughput, and the user's quality of experience is significantly impaired.

  In contrast to such a loss-based congestion control method, there is a delay-based congestion control method represented 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 its minimum value, and it is determined that congestion occurs when the queuing delay exceeds a predetermined threshold. To reduce the transmission rate.

  However, in recent mobile communications, the delay increases due to bit error repair in the lower layer regardless of the presence or absence of congestion. Therefore, TCP using a delay-based congestion control method erroneously detects an increase in delay as congestion and unnecessarily lowers cwnd to suppress the amount of transmission data, leading to a decrease in TCP throughput and a user experience. Quality will be significantly impaired.

  On the other hand, in the method described in Non-Patent Document 4, a base station device, a MEC (Mobile Edge Computing) server, and the like analyze the effective throughput of the mobile network, embed it in a TCP header, and notify the data transmission device. In the TCP of the data transmission apparatus, 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 the effective throughput of the mobile network as information notified from the base station apparatus to the data transmission apparatus. However, by using this notification method, it is possible to notify general information related to the state of the mobile network such as the amount of data staying in the base station device (hereinafter referred to as radio state information).

Sangtae Ha, two 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, 1 other, “The New Reno Modification to TCP's Fast Recovery Algorithm”, RFC 2582, April 1999. Lawrence S. Brakmo, 2 others, “TCP Vegas: New Technologies for Congestion Detection and Avoidance”, Processeds of ACM SIGCOMM '94 Conference on Communications, Inc. 24-35, 1994 A. Jain, 5 others, “Mobile Throughput Guidance Inband Signaling Protocol”, Internet Engineering Task Force Internet-Draft, September 2015

  In LTE and LTE-A, transmission and reception packets between a P-GW (Packet data network Gateway) and a user terminal are GTP-U (General packet radio service Tunneling Protocol for User Plane) and 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 radio state information collected by a base station apparatus or the like 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 apparatus is information for each user terminal.

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

  However, the radio state information notified by the base station apparatus in the method described in Non-Patent Document 4 is information for each user terminal for the above reason. Therefore, when a user terminal performs communication using a plurality of communication sessions together, 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. A difference occurs.

  Due to this difference, for example, when congestion occurs, there arises a problem that the data transmission device cannot determine a communication session in which the amount of transmission data should be suppressed.

  Specifically, if the amount of retained data for each communication session is known, it can be estimated that a communication session with a large amount of retained data is the main cause of congestion. If the communication session that is the main cause of congestion is known, the data transmission device can take measures such as reducing the amount of transmission data by that communication session.

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

  If the data transmission device 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 arises an inconvenience that it leads to a phenomenon that the user's bodily sensation quality is significantly lowered, such as timeout.

  Further, due to this difference, the data transmission apparatus has a problem that it cannot be determined whether each communication session satisfies the required performance.

  Specifically, the data transmission device cannot grasp the throughput for each communication session. Therefore, the data transmission apparatus cannot detect a decrease in throughput in a service such as a moving image that has a required performance for the throughput, and cannot take measures against a decrease in the quality of experience. As a result, there arises an inconvenience that the quality of experience of the user remains lowered.

  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 radio state information for each communication session.

  In order to solve the above-described problem, the communication device of the present invention includes first wireless state information, which is information related to the degree of congestion of wireless communication or the quality of communication quality, including one or more communication sessions. A wireless state information acquisition unit to acquire; a session information acquisition unit to acquire session information for each communication session; and 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.

  In addition, the communication method of the present invention acquires first wireless state information, which is information related to the degree of congestion of wireless communication or the quality of communication quality, including one or more communication sessions, for each communication session. Session information is acquired, and second wireless state information for each communication session is generated and output based on the first wireless state information and the session information.

  Further, the communication program of the present invention is a wireless state for acquiring first wireless state information, which is information relating to 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 for acquiring session information for each communication session; and generation and output of second wireless state information for each communication session based on the first wireless state information and the session information And realizing a wireless state information generation function.

  The communication apparatus, method, and program of the present invention enable the data transmission apparatus to perform control related to data transmission based on the radio state information for each communication session.

It is a figure which shows the structural example of the communication apparatus of 1st and 2nd embodiment of this invention. It is a figure which shows the operation example of the communication apparatus of 1st and 2nd embodiment of this invention. It is a figure which shows the structural example of the communication system of 3rd embodiment of this invention. It is a figure which shows the structural example of the communication apparatus of 3rd embodiment of this invention. It is a figure which shows the structural example of the base station apparatus of 3rd embodiment of this invention. It is a figure which shows the operation example of the communication apparatus of 3rd embodiment of this invention. It is a figure which shows the operation example of the base station apparatus of 3rd embodiment of this invention. It is a figure which shows the structural example of the communication system of 4th embodiment of this invention. It is a figure which shows the structural example of the communication apparatus of 4th embodiment of this invention. It is a figure which shows the structural example of the data transmitter of 4th embodiment of this invention. It is a figure which shows the operation example of the communication apparatus of 4th embodiment of this invention. It is a figure which shows the operation example of the data transmitter of 4th embodiment of this invention. It is a figure which shows the hardware structural example of each embodiment of this invention.

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

  FIG. 1 shows a configuration example of the communication apparatus 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 state information is information regarding 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 way, 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. As a result, the data transmission apparatus can perform priority control and congestion control using the radio state information for each communication session. Therefore, it becomes possible for the data transmitting apparatus to perform control related to data transmission based on the wireless state information for each communication session.

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

  First, the wireless state information acquisition unit 11 acquires first wireless state information including one or more communication sessions (step S101). 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 way, 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. As a result, the data transmission apparatus can perform priority control and congestion control using the radio state information for each communication session. Therefore, it becomes possible for the data transmitting apparatus to perform control related to data transmission based on the wireless state information for each communication session.

  As described above, in the first embodiment of the present invention, the communication device generates and outputs the 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 related to data transmission based on the wireless state information for each communication session.

[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, second radio status information for each communication session suitable for control for each communication session performed by a data transmission device or the like is obtained from first radio status information for each user terminal collected by a base station device or the like. Generate.

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

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

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

  The wireless state information generation unit 13 generates second wireless state information for each communication session 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 output part.

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

Further, as the first wireless state information, information that can be acquired for communication destined for the same user terminal is used. For example, it is possible to use the data size or the number of packets (hereinafter referred to as “retained data amount”) of data packets that are not yet transmitted from the base station device to the user terminal and stay in the base station device. Alternatively and / or one or more of the following information (hereinafter referred to as wireless throughput) may be used.
-Effective throughput of the entire communication from the base station device to the user terminal-Transmission rate of the entire communication from the base station device to the user terminal The transmission rate 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 apparatus and calculates the transmission rate. When only one of the following is acquired from the base station apparatus, it is possible to calculate the transmission rate by supplementing the other information with a predetermined value, such as estimating from the past results, etc. is there.
-Information on the radio band or the number of resource blocks and code modulation method assigned to the entire communication from the base station device to the user terminal by the base station device. Also, the base station device has SINR (Signal to Interference plus Noise Ratio), CQI (Channel A code modulation scheme is determined based on a radio wave condition index value such as Quality Indicator (RSSI), Received Signal Strength Indicator (RSSI), or Arbitrary Strength Unit (ASU). Therefore, the radio state information acquisition unit 11 can also calculate the transmission rate by acquiring the radio wave state index value from the base station apparatus instead of the code modulation method.

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

The session information is information for each communication session related to the first wireless state information acquired by the wireless state information acquisition unit 11, that is, the amount of staying data and / or the wireless throughput. Specifically, as the information related to the staying data amount (hereinafter, staying data amount related information), for example, any one or more of the following information can be used.
In_flight data amount indicating the 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. Congestion window controlled by each communication session. The reception window described in the ACK packet received by each communication session, 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 for each communication session, and in the base station device Information on the communication session is extracted from a part of the data packet staying in the existing DPI (Deep Packet Inspection) method and the partial retention data of each communication session calculated based on this information Amount 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 that have been confirmed to arrive at the user terminal by ACK packets received by each communication session for 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 retained 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 acquisition unit 11 newly acquires wireless state information, when the session information acquisition unit 12 newly acquires session information, the wireless state information generation unit 13 is set at predetermined time intervals or at an arbitrary timing. Second radio status information for each communication session is generated.

  Here, a method for generating the second wireless state information will be described. For example, when the first wireless state information is the amount of retained data, the wireless state information generation unit 13 uses the amount of retained data (second wireless state information) for each communication session as the retained data amount related information (session information). Is generated so that the difference between is constant.

  For example, it is assumed that there are three communication sessions destined for the user terminal, sessions A, B, and C, and the amount of retained data (first radio state information) in the base station apparatus for the user terminal is 90 packets. . Further, it is assumed that in_flight data amount (session information) for each communication session in the data transmission 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 radio state information) of each communication session is set so that the staying data amount (second radio state information) of each communication session and the in_flight data amount (session information) have a certain difference. ). The total amount of in_flight data is 20 + 40 + 60 = 120 packets, and the difference from the amount of staying data is 120−90 = 30 packets. Since there are three communication sessions, 30 ÷ 3 = 10 packets is defined as the difference between the staying data amount and the in_flight data amount in each communication session. Regarding the amount of staying data, it is assumed that session A has 20-10 = 10 packets, session B has 40-10 = 30 packets, and session C has 60-10 = 50 packets.

  It is also possible to generate the retained data amount (second radio state information) for each communication session so that the ratio with the retained data amount related information (session information) is constant.

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

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

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

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

  Also, when the wireless state information is wireless throughput and the session information is wireless throughput related information, it is possible to similarly estimate the wireless state information of each communication session. When the wireless state information is the retained data amount, the wireless throughput related information may be used as the session information, and when the wireless state is the wireless throughput, the retained data amount related information may be used as the session information.

  By configuring the communication device 10 in this way, 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. As a result, the data transmission apparatus can perform priority control and congestion control using the radio state information for each communication session. Therefore, it becomes possible for the data transmitting apparatus to perform control related to data transmission based on the wireless state information for each communication session.

  Moreover, in this embodiment, since the data transmission apparatus can perform priority control and congestion control based on radio state information for each communication session, it is possible to improve the user's quality of experience.

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

  First, when the first wireless state information is notified from the base station device or the like, the wireless state information acquisition unit 11 receives the first state for each user terminal from the base station device or the like at predetermined time intervals or at an arbitrary timing. Wireless state information is acquired (step S101). In addition, the session information acquisition unit 12 is configured such that when the wireless state information acquisition unit 11 acquires the first wireless state information, when the session information is updated, a data transmission device or the like at predetermined time intervals or at arbitrary timing 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 generation unit 13 generates and outputs the second wireless state information is when the wireless state information acquisition unit 11 acquires the first wireless state information or when the session information acquisition unit 12 acquires the session information. Is when you get. Moreover, the timing which the radio | wireless state information generation part 13 produces | generates and outputs 2nd radio | wireless state information may be every predetermined time, or arbitrary timings.

  By operating in this way, 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. As a result, the data transmission apparatus can perform priority control and congestion control using the radio state information for each communication session. Therefore, it becomes possible for the data transmitting apparatus to perform control related to data transmission based on the wireless state information for each communication session.

  As described above, in the second embodiment of the present invention, as in the first embodiment, the communication apparatus uses the first radio state information and the session information to set the second radio state for each communication session. Generate and output information. As a result, the data transmission apparatus can perform priority control and congestion control using the radio state information for each communication session. Therefore, it becomes possible for the data transmitting apparatus to perform control related to data transmission based on the wireless state information for each communication session.

  Moreover, in this embodiment, since the data transmission apparatus can perform priority control and congestion control based on radio state information for each communication session, it is possible to improve the user's quality of experience.

[Third embodiment]
Next, a third embodiment of the present invention will be described. In the present embodiment, the second wireless state information is generated by the data transmission device and used for control of the transmission data amount and data priority control.

  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 with 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 that is installed in a network and once terminates data communication between the origin server and the user terminal 70, such as a cache server, a proxy server, and an edge server.

  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. Further, 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, etc. correspond to the base station apparatus 50.

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

  Note that the communication device 20 may be arranged in the middle of a route through which the origin server transmits data to the user terminal 70. In that case, there may be another network or an origin server behind the communication device 20 when 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 transmitter / receiver 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 the case of this embodiment, first wireless state information for each user terminal 70. The radio status information acquisition unit 11 acquires first radio status information from the packet received by the data transmission / reception 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 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 generation unit 13 generates second wireless state information for each communication session 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 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 state information for each communication session generated by the wireless state information generation unit 13 and the performance requirement acquired from the performance requirement storage unit 28. This is the part that determines the upper limit of the quantity.

  The data priority determination unit 26 transmits the data transmitted by the data transmission / reception unit 24 based on the second radio state information for each communication session generated by the radio state information generation unit 13 and the performance requirement acquired from the performance requirement storage unit 28. This is the part that determines the priority of the packet.

  The connection setting storage unit 27 is a part that stores information on the upper limit value of the data transmission amount of each communication session as session information. The information regarding the upper limit value of the data transmission amount is, for example, the transmission memory size set in the communication device 20 (data transmission device) or the 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 related to the transmission performance of the data packet transmitted by the communication device 20 (data transmission device). The performance requirement includes, for example, one or more of the following information regarding content that is acquired and played back at the same time, such as video and audio.
Reproduction bit rate Predetermined permissible waiting time until the start of reproduction Predetermined permissible waiting time until the display of the content is completed Predetermined throughput guarantee value Predetermined delay guarantee value When the data request message is received from the user terminal 70, the 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 is given 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)
The reception window described in the ACK packet received by the data transmission device (communication device 20) The amount of the data packet that has been confirmed to arrive at the user terminal 70 by the ACK packet received during 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 was received-maximum segment size-duplicate ACK indicating a loss or out of order of data packets
-Explicit Congestion Notification (ECN) message 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 for a certain period in the past. , The minimum value, or one or more information of the difference value between the maximum value and the minimum value may be included. Further, the information may include information obtained by adding statistical processing such as a filter method or exponential moving average that eliminates the influence of instantaneous fluctuations.

  Next, a method for determining the upper limit value of the transmission data amount in the transmission data amount determination unit 25 will be described. For example, the transmission data amount determination unit 25 sets the upper limit value of the transmission data amount so that the second wireless state information (retention 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 wireless throughput of a communication session is larger (smaller) than the target value or target range, the upper limit value of the transmission data amount of the communication session is decreased (larger). By doing this, it becomes possible to reduce the congestion level by reducing the congestion level of a busy communication session, or to increase the congestion level of a busy communication session and effectively use the transmission bandwidth. .

  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 having the second radio state information (the amount of retained data or the wireless throughput) in units of communication sessions. The upper limit value may be decreased. By doing in this way, it becomes possible to reduce the congestion state by reducing the degree of congestion of a more congested communication session. At this time, since the upper limit value of the transmission data amount is not lowered for a communication session that is not congested, it is possible to improve the possibility that a new communication session can communicate.

  The transmission data amount determination unit 25 also determines the upper limit value of the transmission data amount of the communication session when the second wireless state information (retention data amount or wireless throughput) of the specific communication session does not satisfy the performance requirements. May be increased. Or you may reduce the upper limit of the transmission data amount of communication sessions other than the communication session. In this way, it is possible to increase the throughput of a communication session that does not meet the performance requirements and improve the user's quality of experience.

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

  In addition, 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 data packets in order from the communication session with the second largest radio state information. It may be lowered. Thereby, it becomes possible to lower the priority of the data packet of the communication session estimated to have a high contribution rate to the congestion, and to reduce the congestion state.

  The data priority determination unit 26 may temporarily increase the priority of the data packet of the communication session when the second wireless state information of the specific communication session does not satisfy the performance requirement. Thereby, it becomes possible to bring the radio state information of the communication session closer to the performance requirements and improve the user's quality of experience.

  Next, FIG. 5 shows a configuration example of the base station apparatus 50. The base station device 50 includes a data transmission / reception unit 51, a staying data amount storage unit 52, and a wireless throughput storage unit 53. The base station device 50 according to the present embodiment notifies the communication device 20 of the staying data amount 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 forwards a packet transmitted from the user terminal 70 to the data transmission device. Further, the retained data amount for each user terminal 70 is acquired from the retained data amount storage unit 52, the wireless throughput for each user terminal 70 is acquired from the wireless throughput storage unit 53, and the first wireless state information is transmitted to the data transmission device. Notice.

  Next, an example of the first radio state information notification method will be described. For example, by using a communication session for transmission / reception of a data packet and an ACK packet established between the data transmission device (communication device 20) and the user terminal 70, the base station device 50 communicates with the communication device 20 first. The wireless status information can be notified. Specifically, the data transmitter / receiver 51 embeds the first radio state information in the header of the ACK packet when the ACK packet transmitted from the user terminal 70 to the communication device 20 passes through the base station device 50. And the data transmitter-receiver 24 of the communication apparatus 20 acquires 1st radio | wireless state information from the header of an ACK packet, when an ACK packet is received.

  Moreover, the notification method of radio | wireless state information may be the method of utilizing the session for notifications different from the communication session extended between the communication apparatus 20 and the user terminal 70, for example. Specifically, a notification session 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 to notify the first radio state information. Then, the data transmitting / receiving unit 51 notifies the data transmitting / receiving unit 24 of the first wireless state information using the notification session.

  By configuring the communication device 20 in this way, 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. As a result, the data transmission apparatus can perform priority control and congestion control using the radio state information for each communication session. Therefore, it becomes possible for the data transmitting apparatus to perform control related to data transmission based on the wireless state information for each communication session.

  Further, the data transmission device (communication 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 radio state information for each communication session. Therefore, it becomes possible for the data communication apparatus to 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 apparatus 50.

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

  Next, when the data transmitter / receiver 24 of the communication device 20 receives the first wireless state information from the base station device 50 (YES in step S201 of FIG. 6), the wireless state information acquisition unit 11 receives the first wireless state information. Information is acquired from the data transmitter / receiver 24 (step S202).

  The session information acquisition unit 12 acquires session information at predetermined time intervals or at arbitrary timing when the data transmission / reception unit 24 receives an ACK packet from the user terminal 70 (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 acquired from the data transmitter / receiver 24 is session information obtained from the result of the data transmitter / receiver 24 transmitting and receiving data packets and ACK packets.

  The radio status information generation unit 13 generates second radio status information for each communication session based on the first radio status information and the session information. And the produced | generated 2nd radio | wireless state information is output to the transmission data amount determination part 25 and the data priority determination part 26 (step S204). Step S204 can be performed at predetermined time intervals or at arbitrary timing when the wireless state information acquisition unit 11 acquires the first wireless state information and when the session information acquisition unit 12 acquires the session information. is there.

  The transmission data amount determination unit 25 determines the upper limit value of the data amount to be transmitted by the data transmission / reception unit 24 based on the second radio state information and performance requirements for each communication session (step S205). In step S205, when the wireless state information generating unit 13 generates and outputs the second wireless state information, when the data transmitting / receiving unit 24 receives an ACK packet from the user terminal 70, every predetermined time or any timing Can be done.

  The data priority determination unit 26 determines the priority of the data packet to be transmitted by the data transmission / reception unit 24 based on the second radio state information and performance requirements for each communication session (step S206). In step S206, when the wireless state information generating unit 13 generates and outputs second wireless state information for each communication session, when the data transmitting / receiving unit 24 receives an ACK packet from the user terminal 70, every predetermined time, or It is possible to carry out at an arbitrary timing.

  Then, the data transmitting / receiving 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 determining unit 25 and the priority determined by the data priority determining unit 26. (Step S207).

  By operating in this way, 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. As a result, the data transmission apparatus can perform priority control and congestion control using the radio state information for each communication session. Therefore, it becomes possible for the data transmitting apparatus to perform control related to data transmission based on the wireless state information for each communication session.

  As described above, in the third embodiment of the present invention, as in the first and second embodiments, the communication device performs the second communication session unit based on the first radio state information and the session information. The radio state information is generated and output. Therefore, it becomes possible for the data transmitting apparatus to perform control related to data transmission based on the wireless state information for each communication session.

  Further, the data transmission device (communication 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 radio state information for each communication session. Therefore, it becomes possible for the data communication apparatus to 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 radio state information for each communication session, and outputs the second radio state information to the data transmission 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 apparatus is the communication apparatus 20 of the second embodiment, whereas in FIG. 8, the base station apparatus is the communication apparatus 30 of the present embodiment.

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

  The base station device (in this embodiment, the communication device 30) is a device that transfers the data packet transmitted from the data transmission device 60 to the user terminal 70 via the 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 wireless state information acquisition unit 11, a session information acquisition unit 12, and a wireless state information generation unit 13 are added to the configuration example of the base station device 50 of FIG.

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

  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 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 part that acquires session information for each communication session from the packet received by the data transmission / reception unit 51 from the data transmission device 60.

  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, the wireless state information generation unit 13 obtains second wireless state information for each communication session. This is the part to be generated. Further, the generated second radio state information for each communication session is output to the data transmission 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 the output format (format) of the second radio state information for each communication session will be described. The wireless state information generation unit 13 outputs the second wireless state information to the data transmission device 60 in a format that facilitates transmission.

  For example, the wireless state information generation unit 13 lists and outputs one or more combinations of information (for example, TCP port number) that can specify a communication session and second wireless state information for each communication session. For example, there are three communication sessions, sessions A, B, and C, destined for the user terminal 70, and the amount of retained data for each communication session is 10 packets for session A, 30 packets for session B, and 50 packets for session C. Suppose that At this time, the wireless state information generation unit 13 lists 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 for each communication session. For example, in the case of the above-described example, the wireless state information generation unit 13 lists and outputs “port numbers A, 1”, “port numbers B, 3”, and “port numbers C, 5”.

  Further, the wireless state information generation unit 13 may compress and output the data size by simplifying the relationship (difference, ratio, etc.) between the second wireless state information for each communication session and the session information. For example, there are three communication sessions, sessions A, B, and C, destined for the user terminal 70, and the amount of in_flight data for each communication session is 20 packets for session A, 40 packets for session B, and 60 packets for session C. Suppose that Further, it is assumed that the staying data amount in communication session units is 10 packets for session A, 30 packets for session B, and 50 packets for session C. At this time, the wireless state information generation unit 13 outputs information 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 transmitter / receiver 24 transmits a data packet of the 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.

  Furthermore, in this embodiment, the data transmission / reception unit 24 uses the data transmission / reception unit of the communication device 30 to acquire session information 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. To 51.

  Further, the data transmitter / receiver 24 receives, from the data transmitter / receiver 51 of the communication device 30, the second wireless state information for each communication session generated by the wireless state information generator 13 of the communication device 30.

  By configuring the communication device 30 in this way, 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. As a result, the data transmission apparatus can perform priority control and congestion control using the radio state information for each communication session. Therefore, it becomes possible for the data transmitting apparatus to perform control related to data transmission based on the wireless state information for each communication session.

  In addition, the data transmission apparatus according to the present embodiment determines the upper limit value of the transmission data amount and the priority of the transmission packet based on the second radio state information for each communication session. Therefore, it becomes possible for the data communication apparatus to perform appropriate congestion control and priority control for each communication session.

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

  When the data transmitting / receiving unit 24 of the data transmitting device 60 receives an ACK packet from the user terminal 70, the data transmitting / receiving unit 24 acquires session information at predetermined time intervals or at an arbitrary timing. The data transmission / reception unit 24 acquires session information from 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 transmitter / receiver 24 transmits the acquired session information to the communication device 30 (step S501 in FIG. 12).

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

  When the data transmission / reception unit 51 receives the session information, when the first radio state information for each user terminal 70 is updated, the radio state information acquisition unit 11 of the communication device 30 at a predetermined time interval or at an arbitrary timing. Acquires the first wireless state information (step S403). In the present embodiment, the wireless state information acquisition unit 11 uses the retained data amount for each user terminal 70 as the first wireless state information from the retained data amount storage unit 52 and the wireless throughput for each user terminal 70 as the wireless throughput storage unit. 53.

  When the data transmission / reception unit 51 receives session information, when the first wireless state information is updated, the wireless state information generation unit 13 of the communication device 30 performs communication session units at predetermined time intervals or at arbitrary timing. The second radio state information is generated. At this time, the wireless state information generation unit 13 generates second wireless state information based on the session information and the first wireless state information. Further, the wireless state information generation unit 13 outputs the generated second wireless state information to the data transmission / reception unit 51. Then, the data transmitter / receiver 51 transmits the second wireless state information to the data transmitter / receiver 24 of the data transmitter 60 (step S404).

  The data transmitting / receiving unit 24 of the data transmitting device 60 receives the second radio state information for each communication session from the communication device 30 (YES in step S502 of FIG. 12). When the data transmitter / receiver 24 receives the second radio state information, the transmission data amount determination unit 25 and the data priority determination unit 26 acquire the second radio state information from the data transmitter / receiver 24 (step S503). ).

  The transmission data amount determination unit 25 obtains the transmission data amount every predetermined time 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 radio state information. An upper limit value is determined (step S504). At this time, the transmission data amount determination unit 25 determines the upper limit value of the data amount transmitted by the data transmission / reception unit 24 based on the second radio state information and the performance requirements.

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

  Then, the data transmitting / receiving 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 determining unit 25 and the priority determined by the data priority determining unit 26. (Step S506).

  By operating in this way, 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. As a result, the data transmission apparatus can perform priority control and congestion control using the radio state information for each communication session. Therefore, it becomes possible for the data transmitting apparatus to perform control related to data transmission based on the wireless state information for each communication session.

  As described above, in the fourth embodiment of the present invention, as in the first to third embodiments, the communication device performs the second communication session unit based on the first radio state information and the session information. The radio state information is generated and output. Therefore, it becomes possible for the data transmitting apparatus to perform control related to data transmission based on the wireless state information for each communication session.

  In addition, the data transmission apparatus according to the present embodiment determines the upper limit value of the transmission data amount and the priority of the transmission packet based on the second radio state information for each communication session. Therefore, it becomes possible for the data communication apparatus to perform appropriate congestion control and priority control for each communication session.

[Hardware configuration example]
A configuration example of hardware resources for realizing the communication devices (10, 20, and 30) in the above-described embodiments of the present invention using one information processing device (computer) will be described. The communication device may be realized using at least two information processing devices physically or functionally. The communication device may be realized as a dedicated device. Further, only some functions of the communication device may be realized by using the information processing device.

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

  The communication interface 91 is a communication unit for the communication device of each embodiment to communicate with an external device by wire or / and wireless. When the communication device is realized 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 which is an example of an input device and a display as an output device.

  The arithmetic device 93 is an arithmetic processing device such as a general-purpose CPU (Central Processing Unit) or a microprocessor. For example, the arithmetic device 93 can read various programs stored in the nonvolatile 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 from 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) or a flash memory, and can record various programs and data.

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

  The recording medium 97 is an arbitrary recording medium capable of recording 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 apparatus is configured by the information processing apparatus 90 illustrated in FIG. 13, and a program capable of realizing the functions described in the above embodiments is supplied to the communication apparatus. May be realized.

  In this case, the embodiment can be realized by the arithmetic device 93 executing the program supplied to the communication device. Also, some of the functions of the information processing apparatus 90 may be configured instead of all of the communication apparatus.

  Furthermore, the program may be recorded in the recording medium 97, and the program may be stored in the nonvolatile storage device 95 as appropriate at the time of shipment or operation of the communication device. In this case, as the program supply method, a method of installing in a communication apparatus using an appropriate jig may be employed in a manufacturing stage before shipment or an operation stage. The program supply method may employ a general procedure such as a method of downloading from the outside 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 scope of the present invention.

  A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
A wireless state information acquisition unit for acquiring first wireless state information, which is information about the degree of congestion of wireless communication or the quality of communication quality, including one or more communication sessions;
A session information acquisition unit for acquiring session information for each communication session;
A communication apparatus comprising: a wireless state information generation unit that generates and outputs second wireless state information for each communication session based on the first wireless state information and the session information.

(Appendix 2)
The first radio state information includes an amount of data packets staying in a base station device in communication destined for the same user terminal, a throughput between the base station device and the user terminal, the base station The communication apparatus according to appendix 1, wherein the communication apparatus includes at least one of a transmission rate and a radio wave condition index value calculated from information on a radio band or resource block or / and a code modulation scheme allocated in the apparatus. .

(Appendix 3)
The session information includes a data amount, a congestion window, a reception window, and a data transmission amount of each communication session in which the data packet has been transmitted from the data transmission device in each communication session and an acknowledgment packet has not been received. Information on the upper limit value, partial retained data amount for each communication session calculated based on a part of the data packet staying in the base station apparatus, and the confirmation response packet received in a predetermined period to the user terminal The communication apparatus according to Supplementary Note 1 or Supplementary Note 2, including any one or more of the measurement result of the amount, throughput, or available bandwidth of the data packet that has been confirmed to arrive.

(Appendix 4)
The wireless state information generation unit performs the generation of the second wireless state information based on a difference or ratio between the second wireless state information and the session information. The communication apparatus in any one of.

(Appendix 5)
The session information is a partial retained data amount for each communication session calculated based on a part of the data packet retained in the base station device,
The wireless state information generation unit performs the generation of the second wireless state information based on a partial ratio of the staying data amount for each communication session. The communication apparatus as described in.

(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 a part of the communication sessions are started or stopped. The communication device according to any one of appendix 1 to appendix 3.

(Appendix 7)
The wireless state information acquisition unit performs the acquisition of the first wireless state information by acquiring the first wireless state information from a packet received from a base station device. 6. 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 appendix 1 to appendix 7, wherein the radio state information generation unit performs the output of the second radio state information toward the data transmission device.

(Appendix 9)
The radio status information generation unit is a format of a difference or ratio of the second radio status information during the communication session, or a format of a difference or ratio between the second radio status information and the session information, The communication apparatus according to appendix 8, wherein the output of the second radio state information is performed.

(Appendix 10)
The radio status information generation unit performs the output of the second radio status information to the data transmission device by embedding the second radio status information in the packet transmitted / received to / from the data transmission device, or The communication apparatus according to appendix 8 or appendix 9, wherein the communication session is performed using a notification session different from the communication session established between the data transmission apparatus.

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

(Appendix 12)
The communication apparatus according to appendix 7 or appendix 11, further comprising a data priority determination unit that determines a priority of a data packet to be transmitted based on the second radio state information.

(Appendix 13)
A transmission data amount determination unit that receives second radio state information for each communication session and determines an upper limit value of a transmission data amount of a data packet to be transmitted based on the second radio state information. Data transmission device.

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

(Appendix 15)
A data transmission apparatus comprising: a data priority determination unit that receives second radio state information in communication session units and determines a priority of a data packet to be transmitted based on the second radio state information.

(Appendix 16)
Including first or more communication sessions, acquiring first wireless state information, which is information relating to the degree of congestion of wireless communication or the quality of communication quality;
Obtaining session information for each communication session;
A communication method comprising: generating and outputting second radio status information for each communication session based on the first radio status information and the session information.

(Appendix 17)
The first radio state information includes an amount of data packets staying in a base station device in communication destined for the same user terminal, a throughput between the base station device and the user terminal, the base station 18. The communication method according to appendix 16, wherein the communication method includes any one or more of a transmission rate and a radio wave condition index value calculated from information on radio band or resource block or / and code modulation scheme allocated in the apparatus. .

(Appendix 18)
The session information includes a data amount, a congestion window, a reception window, and a data transmission amount of each communication session in which the data packet has been transmitted from the data transmission device in each communication session and an acknowledgment packet has not been received. Information on the upper limit value, partial retained data amount for each communication session calculated based on a part of the data packet staying in the base station apparatus, and the confirmation response packet received in a predetermined period to the user terminal 18. The communication method according to appendix 16 or appendix 17, wherein the communication method includes any one or more of the amount, throughput, or available bandwidth measurement result of the confirmed data packet.

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

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

(Appendix 21)
The generation of the second radio status information is performed based on a difference in the first radio status information before and after the start or stop of some of the communication sessions. The communication method according to any one of the above.

(Appendix 22)
The communication according to any one of appendix 16 to appendix 21, wherein the acquisition of the first radio status information is performed by acquiring the first radio status 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,
The communication method according to any one of appendix 16 to appendix 22, wherein the output of the second radio state information is performed toward the data transmission device.

(Appendix 24)
In the form of the difference or ratio of the second radio condition information during the communication session, or in the form of the difference or ratio between the second radio condition information and the session information, the second radio condition information The communication method according to attachment 23, wherein the output 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 / received to / from the data transmission device, or between the data transmission device 25. The communication method according to appendix 23 or appendix 24, wherein the communication session is performed using a notification session different from the communication session.

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

(Appendix 27)
27. The communication method according to appendix 22 or appendix 26, wherein the priority of the data packet to be transmitted is determined based on the second radio status information.

(Appendix 28)
A data transmission method comprising: receiving second radio status information in communication session units; and determining an upper limit value of a transmission data amount of a data packet to be transmitted based on the second radio status information.

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

(Appendix 30)
A data transmission method comprising: receiving second radio status information in communication session units; and determining a priority of a data packet to be transmitted based on the second radio status information.

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

(Appendix 32)
The first radio state information includes an amount of data packets staying in a base station device in communication destined for the same user terminal, a throughput between the base station device and the user terminal, the base station 32. The communication program according to appendix 31, wherein the communication program includes at least one of a transmission rate and a radio wave condition index value calculated from information on a radio band or resource block or / and a code modulation scheme allocated in the apparatus. .

(Appendix 33)
The session information includes a data amount, a congestion window, a reception window, and a data transmission amount of each communication session in which the data packet has been transmitted from the data transmission device in each communication session and an acknowledgment packet has not been received. Information on the upper limit value, the amount of retained data for each communication session calculated based on one function of the data packet retained in the base station apparatus, and the confirmation response packet received in a predetermined period to the user terminal 34. The communication program according to Supplementary Note 31 or Supplementary Note 32, including any one or more of the data packet amount, throughput, or available bandwidth measurement result that has been confirmed to arrive.

(Appendix 34)
The radio status information generation function performs the generation of the second radio status information based on a difference or ratio between the second radio status information and the session information. The communication program in any one of.

(Appendix 35)
The session information is a function-specific retained data amount for each communication session calculated based on one function of a data packet retained in the base station device,
Any one of appendix 31 to appendix 33, wherein the radio status information generation function performs the generation of the second radio status information based on a ratio of the retained data amount for each communication session. The communication program according to the above.

(Appendix 36)
The wireless state information generation 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. The communication program according to any one of Supplementary Note 31 to Supplementary Note 33.

(Appendix 37)
The wireless state information acquisition function performs the acquisition of the first wireless state information by acquiring the first wireless state 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,
The communication program according to any one of appendix 31 to appendix 37, wherein the radio state information generation function performs the output of the second radio state information toward the data transmission device.

(Appendix 39)
The radio status information generation function is a format of a difference or ratio of the second radio status information during the communication session, or a format of a difference or ratio between the second radio status information and the session information. The communication program according to appendix 38, wherein the output of the second radio state information is performed.

(Appendix 40)
The radio status information generation function is performed by embedding the output of the second radio status information to the data transmission device in the packet transmitted and received with the data transmission device, or 40. The communication program according to appendix 38 or appendix 39, wherein the communication program is performed using a notification session different from the communication session established between the data transmission device.

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

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

(Appendix 43)
On the computer,
It implements a transmission data amount determination function for receiving the second radio state information for each communication session and determining the upper limit value of the transmission data amount of the data packet to be transmitted based on the second radio state information. To send data.

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

(Appendix 45)
On the computer,
A data transmission program that realizes a data priority determination function that receives second wireless state information for each communication session and determines the priority of a data packet to be transmitted based on the second wireless state information .

(Appendix 46)
A computer-readable recording medium on which the communication program according to any one of Supplementary Note 31 to Supplementary Note 42 is recorded.

(Appendix 47)
A computer-readable recording medium on which the data transmission program according to any one of appendix 43 to appendix 45 is recorded.

DESCRIPTION OF SYMBOLS 10, 20, 30 Communication apparatus 11 Radio | wireless state information acquisition part 12 Session information acquisition part 13 Radio | wireless state information generation part 24 Data transmission / reception part 25 Transmission data amount determination part 26 Data priority determination part 27 Connection setting memory | storage part 28 Performance requirement memory | storage part DESCRIPTION OF SYMBOLS 50 Base station apparatus 51 Data transmission / reception part 52 Retained data amount memory | storage part 53 Wireless throughput memory | storage part 60 Data transmission apparatus 70 User terminal 80 Network 90 Information processing apparatus 91 Communication interface 92 Input / output interface 93 Arithmetic apparatus 94 Storage apparatus 95 Nonvolatile storage apparatus 96 drive device 97 recording medium

Claims (10)

A wireless state information acquisition unit for acquiring first wireless state information, which includes information about the degree of congestion of wireless communication or the quality of communication quality, including one or more communication sessions;
A session information acquisition unit for acquiring session information for each communication session;
A communication apparatus comprising: a wireless state information generation unit that generates and outputs second wireless state information for each communication session based on the first wireless state information and the session information. The said radio | wireless state information generation part performs the said production | generation of said 2nd radio | wireless state information based on the difference or ratio of said 2nd radio | wireless state information and said session information. Communication equipment. The session information is a partial retained data amount for each communication session calculated based on a part of the data packet retained in the base station device,
The communication apparatus according to claim 1, wherein the wireless state information generation unit performs the generation of the second wireless state information based on a partial ratio of the staying data amount for each communication session. . 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 a part of the communication sessions are started or stopped. The communication device according to claim 1. The wireless state information acquisition unit performs the acquisition of the first wireless state information by acquiring the first wireless state information from a packet received from a base station device. The communication apparatus according to claim 4. 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 claims 1 to 5, wherein the wireless state information generation unit performs the output of the second wireless state information toward the data transmission device. The radio status information generation unit is a format of a difference or ratio of the second radio status information during the communication session, or a format of a difference or ratio between the second radio status information and the session information, The communication apparatus according to claim 6, wherein the output of the second radio state information is performed. A transmission data amount determination unit for determining an upper limit value of a transmission data amount of a data packet to be transmitted based on the second radio state information;
Or / and
The communication apparatus according to claim 5, further comprising: a data priority determining unit that determines a priority of the data packet to be transmitted based on the second radio state information. Including first or more communication sessions, acquiring first wireless state information, which is information relating to the degree of congestion of wireless communication or the quality of communication quality;
Obtaining session information for each communication session;
A communication method comprising: generating and outputting second radio status information for each communication session based on the first radio status information and the session information. On the computer,
A wireless state information acquisition function for acquiring first wireless state information, which is information about the degree of congestion of wireless communication or the quality of communication quality, including one or more communication sessions;
A session information acquisition function for acquiring session information for each communication session;
A communication program for realizing a wireless state information generation function for generating and outputting second wireless state information for each communication session based on the first wireless state information and the session information.

Images