JP6290631B2 - Wireless transmission system, wireless transmission device, and wireless transmission method - Google Patents

Description

  The present invention relates to a wireless transmission system, a wireless transmission device, and a wireless transmission method, and more particularly to a wireless transmission system, a wireless transmission device, and a wireless transmission method that reduce power consumption of fixed digital wireless communication.

  In recent years, with the spread of the Internet, the amount of communication handled by wired communication has increased, and the amount of communication in the mobile backhaul of mobile communication systems has increased accordingly. The mobile backhaul is a network for accommodating a plurality of scattered radio base stations and connecting to a core network, and is configured not only by wired communication but also by a communication line using wireless communication. Therefore, it is required to handle the same amount of communication as that of wired communication in wireless communication.

  Technologies for increasing the amount of communication in wireless communication include technology that applies link aggregation to wireless communication, and technology of adaptive modulation wireless technology that optimizes link capacity by changing the modulation method according to the propagation state of the wireless section. Developed and used.

  In link aggregation, for example, by bundling five 100 Mbps physical lines, it can be used as a 500 Mbps logical line.

  An invention in which such a link aggregation technique is applied to a wireless transmission system is disclosed in Patent Document 1.

  Patent Document 1 discloses a wireless transmission device that can secure a predetermined communication quality in consideration of the communication quality of a wireless transmission link in a wireless transmission system to which a link aggregation technique is applied. In this wireless transmission system, in the wireless transmission device, a plurality of wireless signal processing means each having an antenna form an independent wireless transmission link. The plurality of wireless transmission links are handled as one logical wireless transmission link by the link aggregation control means and the packet transfer control means. The link aggregation control means determines the priority of the physical link based on the signal level for each physical link notified by feedback from the counterpart device. The packet transfer control means is configured to select a physical link having a usable bandwidth with a predetermined capacity and a high priority as a data transmission destination when transmitting data.

  In addition, the adaptive modulation radio system improves the signal transmission rate by increasing the number of modulation multilevels when the propagation state of the radio transmission link is good, and decreases the communication level by reducing the number of modulation multilevels when the propagation state is poor. It is a technology to deal with degradation of

  Patent Document 2 discloses a wireless communication system that performs transmission power control by changing the modulation multi-value number based on the traffic amount.

  The wireless communication system disclosed in Patent Document 2 is configured to detect the amount of data in a wired transmission path, determine the traffic amount, and change the modulation multi-value number according to the determination result. That is, when the amount of traffic is small, the transmission rate is kept low, and the transmission power is also set low, thereby saving power.

International Publication No.2013 / 001732 International Publication No.2012 / 128146

  The wireless transmission device disclosed in Patent Literature 1 gives priority to the wireless transmission link provided by each wireless signal processing means handled as a link aggregation group according to the communication quality. The forwarded packet is distributed to the wireless transmission link set for each priority according to the priority of the packet. A predetermined band is assigned to the wireless transmission link set for each priority, and the transmission processing unit and the reception processing unit operate in common in each wireless signal processing unit.

  However, the wireless transmission device disclosed in Patent Document 1 does not disclose controlling each of the transmission processing unit and the reception processing unit to the optimum number of uses according to the amount of traffic passing through. For this reason, even when the amount of traffic passing is less than the set bandwidth, the radio signal processing means of a predetermined band is in an operating state, and RF (Radio Frequency) output power in the apparatus is wasted. There is a problem of being consumed.

  Moreover, although the wireless communication system disclosed in Patent Document 2 is intended to save power of the apparatus, it is a technique for reducing power consumption by controlling each of the transmission processing unit and the reception processing unit to the optimum number of uses. is not.

  The present invention relates to a wireless transmission system, a wireless transmission device, and a wireless transmission that reduce the power consumption of the entire device by controlling each of the transmission processing unit and the reception processing unit to the optimum number of uses according to the amount of traffic that passes. It aims to provide a method.

  In order to achieve the above object, a wireless transmission system according to an aspect of the present invention includes a plurality of transmission processing units that configure a physical link having a predetermined band for transmitting wireless data, and a data amount of input transmission data A transmission-side wireless transmission device that calculates and outputs an optimum number of transmission links, which is the number of transmission processing means corresponding to the number of physical links required to secure the necessary transmission bandwidth calculated based on A plurality of reception processing means constituting a physical link having a predetermined band for receiving the transmission link, and when receiving the optimum number of transmission links output from the transmission-side wireless transmission device, the optimum transmission among the plurality of reception processing means Only the number of the reception processing means corresponding to the number of links is in an operating state, and outputs a reception preparation completion notification that is a notification of completion of reception preparation; The transmission-side wireless transmission device receives the reception preparation completion notification output from the reception-side wireless transmission device, and the number of transmission processes corresponding to the optimal number of transmission links among the plurality of transmission processing means. Only one means is set in an operating state, and one physical link is formed as a wireless transmission path using the physical links formed by each of the transmission processing means in the operating state in parallel.

  According to another aspect of the present invention, a wireless transmission device includes a plurality of transmission processing units forming a physical link having a predetermined band for transmitting wireless data, and a physical link having a predetermined band for receiving wireless data. A plurality of reception processing means for forming an input transmission path, a traffic monitoring means for monitoring the input transmission path and calculating a required transmission bandwidth based on a data amount of input transmission data, and the required transmission bandwidth calculated by the traffic monitoring means Calculating the optimum number of transmission links, which is the number of the transmission processing means corresponding to the number of physical links necessary to secure the number of transmission links, and transmitting the optimum number of transmission links to the opposite radio transmission apparatus. A plurality of transmission processing means upon receiving from the opposite radio transmission device a reception preparation completion notification that is a notification of completion of reception preparation on the number of physical links corresponding to Among them, only the number of the transmission processing means corresponding to the optimum number of transmission links is set in an operating state, and one physical link is wirelessly transmitted by using the physical links formed by each of the transmission processing means in the operating state in parallel. Logical link formation control means formed as a path, and when the logical link formation control means receives the optimum number of transmission links from the opposite wireless transmission device, the optimum transmission link number among the plurality of reception processing means Only the number of reception processing means corresponding to the number is set in an operating state, and the reception preparation completion notification is returned.

  In addition, the wireless transmission method according to another aspect of the present invention provides transmission data data input by a transmission-side wireless transmission apparatus including a plurality of transmission processing units that form a physical link having a predetermined band for transmitting wireless data. Calculating and outputting the optimal number of transmission links, which is the number of the transmission processing means corresponding to the number of physical links necessary to secure the necessary transmission bandwidth calculated based on the amount, and receiving predetermined radio data When the reception-side wireless transmission device having a plurality of reception processing means configuring a physical link having a band receives the optimum number of transmission links output from the transmission-side wireless transmission device, the plurality of reception processing means, Only the number of reception processing means corresponding to the optimal number of transmission links is put into operation, and a reception preparation completion notification, which is a notification of completion of reception preparation, is output. When receiving the reception preparation completion notification output by the reception-side wireless transmission device, only the number of the transmission processing units corresponding to the optimal number of transmission links among the plurality of transmission processing units is set to the operating state, and the operating state is set. One of the transmission processing means is used in parallel to form one logical link as a wireless transmission path.

  Furthermore, a wireless transmission method according to another aspect of the present invention includes a plurality of transmission processing means for forming a physical link having a predetermined band for transmitting wireless data, and a physical link having a predetermined band for receiving wireless data. Necessary for a wireless transmission device having a plurality of reception processing means to be formed to monitor an input transmission path, calculate a necessary transmission band based on a data amount of input transmission data, and secure the necessary transmission band The number of the transmission processing means corresponding to the number of the physical links is calculated and transmitted to the opposite radio transmission apparatus, and the number of the physical links corresponding to the number of the optimum transmission links transmitted is calculated. When a reception preparation completion notification, which is a notification of completion of reception preparation, is received from the opposite radio transmission apparatus, the number of transmission processes corresponding to the optimum number of transmission links among the plurality of transmission processing means. Only one means is in an operating state, and one physical link is formed as a wireless transmission path using the physical links formed by each of the transmission processing means in the operating state in parallel, and the optimum number of transmission links from the opposite wireless transmission device Is received, only the number of the reception processing means corresponding to the optimum number of transmission links among the plurality of reception processing means is set in an operating state, and the reception preparation completion notification is returned.

  According to the present invention, the power consumption of the entire apparatus can be reduced by controlling each of the transmission processing unit and the reception processing unit to the optimum number of uses according to the amount of traffic passing therethrough.

1 is a block diagram illustrating a configuration of a wireless transmission system according to a first embodiment of the present invention. It is a block diagram which shows the structure of the radio | wireless transmission apparatus of 1st Embodiment. It is a sequence diagram which shows operation | movement of the radio | wireless transmission system of 1st Embodiment. It is a flowchart which shows operation | movement of the radio | wireless transmission apparatus of 1st Embodiment. It is a block diagram which shows the structure of the radio | wireless transmission apparatus of the 2nd Embodiment of this invention. It is a flowchart which shows the operation | movement of the transmission process of the radio | wireless transmission apparatus of the 2nd Embodiment of this invention. It is a flow which shows the operation | movement of the reception process of the radio | wireless transmission apparatus of 2nd Embodiment. It is a sequence diagram which shows the relationship between each component in transmission operation | movement when the optimal transmission link number of the wireless transmission apparatus of 2nd Embodiment increases. It is a sequence diagram which shows the relationship between each component in the reception operation | movement of the radio | wireless transmission apparatus of 2nd Embodiment. It is a sequence diagram which shows the relationship between each component in a transmission operation when the optimal transmission link number of the radio | wireless transmission apparatus of 2nd Embodiment reduces.

  DESCRIPTION OF EMBODIMENTS Embodiments for carrying out the present invention will be described with reference to the drawings.

  With reference to FIG. 1 and FIG. 2, a wireless transmission system and a wireless transmission device according to a first embodiment of the present invention will be described.

  FIG. 1 is a block diagram illustrating a configuration of a wireless transmission system according to a first embodiment of this invention.

  FIG. 2 is a block diagram showing the configuration of the wireless transmission apparatus according to the first embodiment of the present invention.

  The embodiments are examples, and the disclosed apparatus and system are not limited to the configurations of the following embodiments.

  Referring to FIG. 1, the wireless transmission system 1 according to the first exemplary embodiment of the present invention includes a transmission-side wireless transmission device 10 and a reception-side wireless transmission device 20.

  The transmission-side wireless transmission device 10 includes a plurality of transmission processing means (11, 12, 13 to 1n: n is a natural number) that configures a physical link having a predetermined band for transmitting wireless data. The transmission-side wireless transmission device 10 includes transmission processing means (11, 12, 13-1n) corresponding to the number of physical links necessary to secure the necessary transmission bandwidth calculated based on the amount of input transmission data. The optimal number of transmission links, which is a number, is calculated and output.

  The reception-side wireless transmission device 20 includes a plurality of reception processing means (21, 22, 23-2n: n is a natural number) that constitutes a physical link having a predetermined band for receiving wireless data. When receiving the optimal number of transmission links output from the transmission side wireless transmission device 10, the reception-side wireless transmission device 20 operates only the number of reception processing units corresponding to the optimal number of transmission links among the plurality of reception processing units. To. Then, the reception-side wireless transmission device 20 outputs a reception preparation completion notification that is a notification that reception preparation is completed.

  When receiving the reception preparation completion notification output from the reception-side wireless transmission device 20, the transmission-side wireless transmission device 10 puts only the number of transmission processing units corresponding to the optimal number of transmission links into an operating state among the plurality of transmission processing units. To do.

  Then, the transmission-side wireless transmission device 10 forms one logical link as a wireless transmission path by using in parallel the physical links formed by the transmission processing means in the operating state.

  Note that the above-described transmission-side wireless transmission device 10 and reception-side wireless transmission device 20 are configured such that the wireless transmission device 100 according to the first embodiment described with reference to FIG. 2 is opposed to each other via a wireless transmission path. . When the wireless transmission device 100 handles transmission traffic, it operates as the transmission-side wireless transmission device 10, and when it handles reception traffic, it operates as the reception-side wireless transmission device 20.

  Referring to FIG. 2, the wireless transmission device 100 according to the first embodiment of the present invention includes a plurality of transmission processing units, a plurality of reception processing units, a traffic monitoring unit 130, and a logical link formation control unit 140. Is done. In addition, reference numerals 110, 111, 112 to 11n (n is a natural number) are assigned to the transmission processing means, and reference numerals 120, 121, 122 to 12n (n is a natural number) are assigned to the reception processing means.

  Each transmission processing unit 110, 111, 112 to 11n forms a physical link having a predetermined band for transmitting wireless data. Each of the reception processing means 120, 121, 122 to 12n forms a physical link having a predetermined band for receiving wireless data.

  The traffic monitoring unit 130 monitors the input transmission path and calculates a necessary transmission band based on the amount of input transmission data.

  The logical link formation control unit 140 calculates the optimum number of transmission links, which is the number of transmission processing units corresponding to the number of physical links necessary to secure the necessary transmission bandwidth calculated by the traffic monitoring unit 130. The logical link formation control unit 140 transmits the calculated optimum number of transmission links to the opposite wireless transmission device. A reception preparation completion notification, which is a notification of completion of reception preparation on the number of physical links corresponding to the number of transmitted optimal transmission links, is received from the opposite wireless transmission apparatus.

  Upon receiving the reception preparation completion notification, the logical link formation control unit 140 sets only the number of transmission processing units corresponding to the optimal number of transmission links among the plurality of transmission processing units 110, 111, 112 to 11n to be in an operating state. Then, one logical link is formed as a wireless transmission path by using the physical links formed by the transmission processing means in the operating state in parallel.

  When the logical link formation control unit 140 receives the optimum number of transmission links from the opposite radio transmission apparatus, the number of reception processing units corresponding to the optimum number of transmission links among the plurality of reception processing units 120, 121, 122 to 12n. Only put it in operation. Then, the logical link formation control unit 140 returns a reception preparation completion notification.

  Subsequently, the operation of the wireless transmission system and the operation of the wireless transmission device according to the first embodiment of the present invention will be described with reference to FIGS.

  FIG. 3 is a sequence diagram illustrating an operation of the wireless transmission system according to the first embodiment of this invention.

  FIG. 4 is a flowchart illustrating the operation of the wireless transmission device according to the first embodiment of this invention.

  In the first embodiment, a wireless transmission method is implemented by operating a wireless transmission system or a wireless transmission device. Therefore, the description of the wireless transmission method in the first embodiment replaces the following description of the operation of the wireless transmission system and the wireless transmission device.

  First, referring to FIG. 3, in the wireless transmission method according to an embodiment of the present invention, the wireless transmission system operates as follows.

  The transmitting-side wireless transmission device calculates the optimum number of transmission links, which is the number of transmission processing means corresponding to the number of physical links necessary to secure the necessary transmission bandwidth calculated based on the amount of input transmission data. (S101). Note that the transmission-side wireless transmission device includes a plurality of transmission processing means that configure a physical link having a predetermined band for transmitting wireless data.

  The transmitting side wireless transmission device outputs the optimum number of transmission links (S102).

  When the reception-side wireless transmission device receives the optimum number of transmission links output from the transmission-side wireless transmission device, only the number of reception processing means corresponding to the optimum number of transmission links among the plurality of reception processing means is put into an operating state. (S103). The reception-side wireless transmission device includes a plurality of reception processing means that configure a physical link having a predetermined band for receiving wireless data.

  The reception-side wireless transmission device outputs a reception preparation completion notification that is a notification that the reception preparation is completed (S104).

  When the transmission-side wireless transmission device receives the reception preparation completion notification output from the reception-side wireless transmission device, only the number of transmission processing units corresponding to the optimal number of transmission links among the plurality of transmission processing units is set in the operating state ( S105). Then, one logical link is formed as a wireless transmission path by using the physical links formed by the transmission processing means in the operating state in parallel (S106).

  Next, referring to FIG. 4, in the wireless transmission method which is another form of the first embodiment of the present invention, the wireless transmission device operates as follows. The operation of the wireless transmission device is divided into transmission processing and reception processing.

  The transmission processing of the wireless transmission device operates as follows.

  This is the number of transmission processing means corresponding to the number of physical links necessary to monitor the input transmission path, calculate the necessary transmission bandwidth based on the amount of input transmission data, and secure the necessary transmission bandwidth The optimum number of transmission links is calculated (S111).

  The wireless transmission device includes a plurality of transmission processing means and a plurality of reception processing means. The transmission processing means forms a physical link having a predetermined band for transmitting wireless data, and the reception processing means receives wireless data. A physical link having a predetermined bandwidth is formed.

  The optimum number of transmission links is transmitted to the opposite wireless transmission device (S112).

  A reception preparation completion notification, which is a notification of completion of reception preparation on the number of physical links corresponding to the transmitted optimal number of transmission links, is received from the opposite wireless transmission apparatus (S113). Upon receiving this reception preparation completion notification, the transmission processing means is put into an operating state only in the number of signal processing means corresponding to the optimum number of transmission links among the plurality of signal processing means (S114).

  One logical link is formed as a wireless transmission path by using the physical links formed by the transmission processing means in the operating state in parallel (S115).

  The above is the transmission processing of the wireless transmission device.

  The reception process of the wireless transmission device operates as follows.

  The optimum number of transmission links is received from the opposite wireless transmission device (S121).

  Of the plurality of reception processing means, only the number of reception processing means corresponding to the transmitted optimal number of transmission links is put into operation (S122).

  Then, a reception preparation completion notification is returned to the opposite wireless transmission device (S123).

  As described above, in the present embodiment, the necessary transmission bandwidth is calculated based on the amount of input transmission data. Then, how many transmission processing means are required to cover the necessary number of physical links to secure the necessary transmission bandwidth is calculated. The number of transmission processing means necessary to cover the number of physical links necessary to secure the necessary transmission bandwidth is referred to as the optimal number of transmission links.

  The optimum number of transmission links calculated by the transmission side device is notified to the opposite reception side device. In the reception side device, only the number of reception processing units corresponding to the number of links determined by the transmission side device are set in the operating state, and the other reception processing units are set in the stopped state. When the reception side apparatus completes preparation for reception with only the necessary number of reception processing means in an operating state, a reception preparation completion notification is sent to the transmission side apparatus.

  In the transmission-side apparatus that knows that reception preparation at the reception-side apparatus is completed, only the transmission processing means corresponding to the optimal number of transmission links is set in the operating state, and the other transmission processing means are in the stopped state. Then, the transmission side device performs link aggregation control using the physical link formed by each of the transmission processing means in the operating state.

  As a result of the above processing, the optimum number of transmission processing means and reception processing means in the signal transmission direction is determined in the opposing radio transmission apparatuses. Therefore, in the same wireless transmission device, an optimal number of transmission processing means and reception processing means are used for each data amount passing through the transmission direction and the reception direction.

  That is, different numbers of transmission processing means and reception processing means can be used depending on the amount of data passing through the transmission direction and the reception direction. Then, unnecessary transmission processing means and reception processing means are stopped.

  Therefore, in the present embodiment, the transmission processing means and the reception processing means are each controlled to the optimum number of uses according to the amount of traffic that passes, and the power consumption of the entire wireless transmission device can be reduced.

  Next, a second embodiment will be described.

  FIG. 5 is a block diagram showing the configuration of the wireless transmission apparatus according to the second embodiment of the present invention.

  The wireless transmission device 200 according to the second embodiment converts the signal format of the wired transmission path that is transmitted and received through the wired transmission path into the signal format of the wireless transmission path, and other wireless transmission devices that face each other via the wireless transmission path. Send and receive radio frames between.

  In the wireless transmission system of the second embodiment, illustration and detailed description are omitted, but the wireless transmission device 200 described below is configured as a transmission-side wireless transmission device and a reception-side wireless transmission device via a wireless transmission path. It becomes the form which opposes. In the wireless transmission system according to the second embodiment, the wireless transmission device 200 operates as a transmission-side wireless transmission device when handling transmission traffic, and operates as a reception-side wireless transmission device when handling reception traffic.

  The wireless transmission device 200 includes a plurality of signal processing circuits (210, 211, 212 to 21n: n is a natural number) as a configuration for transmitting and receiving wireless frames.

  Each of the signal processing circuits 210, 211, 212 to 21n includes a transmission processing unit that transmits a wireless frame to the wireless transmission path and a reception processing unit that receives the wireless frame from the wireless transmission path. Each of the transmission processing unit and the reception processing unit constitutes a physical link having a predetermined band. Here, it is assumed that each of the transmission processing unit and the reception processing unit has the same bandwidth.

  Further, the signal processing circuit 210 is referred to as a representative signal processing circuit, and has functions different from those of the other signal processing circuits 211 and 212 to 21n as described later.

  The wireless transmission device 200 includes a transmission signal conversion circuit 240 and a reception signal conversion circuit 250 as a configuration for converting the signal format of the wired transmission path that is transmitted and received by the wired transmission path into the signal format of the wireless transmission path.

  The transmission signal conversion circuit 240 converts a wired data signal sequence input from an input transmission path, which is a wired transmission path, into a radio frame data sequence, and outputs the radio frame data sequence to the transmission processing units of the signal processing circuits 210, 211, 212 to 21n.

  The reception signal conversion circuit 250 converts the wireless frame data sequence input from the reception processing units of the signal processing circuits 210, 211, and 212 to 21n into a wired data signal sequence and outputs the wired data signal sequence to an output transmission path that is a wired transmission path.

  The wireless transmission device 200 further includes a traffic monitoring circuit 220 and a logical link formation control circuit 230.

  The traffic monitoring circuit 220 constantly monitors the amount of transmission data input from the input transmission path in the transmission signal conversion circuit. The traffic monitoring unit 130 in the first embodiment corresponds to the traffic monitoring circuit 220 and the transmission signal conversion circuit 240.

  Based on the detected input data, the traffic monitoring circuit 220 calculates a transmission transmission rate using, for example, a data amount per unit time.

  In the initial operation, the traffic monitoring circuit 220 notifies the logical link formation control circuit 230 of the average transmission transmission rate monitored for a certain period of time. In the subsequent monitoring, if there is a predetermined increase / decrease change in the average transmission transmission rate monitored for a certain time, the logical link formation control circuit 230 is notified.

  The logical link formation control circuit 230 performs processing to be described later, and performs link aggregation control for integrating the number of physical links necessary for passing the transmission transmission rate signal notified from the traffic monitoring circuit 220.

  When the logical link formation control circuit 230 receives notification from the traffic monitoring circuit 220 that the transmission transmission rate has changed by a predetermined increase / decrease during operation, the logical link formation control circuit 230 is necessary to pass the signal of the transmission transmission rate that has received the notification. To increase or decrease the number of physical links.

  Here, an outline of control performed by the logical link formation control circuit 230 to integrate the number of physical links necessary for passing the transmission transmission rate signal will be described.

  The logical link formation control circuit 230 calculates the number of physical links necessary for passing the transmission transmission rate signal notified from the traffic monitoring circuit 220. As described above, since all the transmission processing units have the same band, the necessary number of physical links can be obtained by dividing the transmission transmission rate by the band of the transmission processing unit.

  The number of physical links obtained by the logical link formation control circuit 230 is referred to as the optimum number of transmission links. For example, when the transmission transmission rate notified from the traffic monitoring circuit 220 is 50 Mbps and the bandwidth of the physical link of each transmission processing unit is 20 Mbps, the optimum number of transmission links is “3”.

  On the other hand, as a physical link, a transmission processing unit operated on the transmission side and a reception processing unit on the reception side corresponding to the transmission side must operate in the opposite wireless transmission apparatus.

  Therefore, the logical link formation control circuit 230 that has determined the optimum number of transmission links notifies the representative signal processing circuit 210 of the optimum number of transmission links. Then, the representative signal processing circuit 210 includes the optimum number of transmission links notified from the logical link formation control circuit 230 in the radio frame of the transmission traffic transmitted from the transmission signal conversion circuit 240 and transmits it to the opposite radio transmission apparatus.

  Although the details will be described later, the opposite radio transmission apparatus operates the required number of reception processing units based on the optimum number of transmission links included in the radio frame, and is ready for reception by the number of physical links determined on the transmission side. A notification of completion of reception preparation is returned.

  The reception preparation completion notification is received by the reception processing unit of the representative signal processing circuit 210 from the opposite wireless transmission device, included in the wireless frame.

  The reception processing unit of the representative signal processing circuit 210 extracts the reception preparation completion notification from the radio frame and sends the reception preparation completion notification to the logical link formation control circuit 230. The remaining radio frames are transmitted to the received signal conversion circuit 250 as received traffic.

  The logical link formation control circuit 230 that has received the reception preparation completion notification sets only the transmission processing units of the number of signal processing circuits corresponding to the determined optimal number of transmission links to the operating state. At this time, it is assumed that the transmission processing unit is operated in order from the signal processing circuit with the consecutive number (serial number) assigned to the signal processing circuit.

  Then, the logical link formation control circuit 230 controls link aggregation using the physical links formed by the transmission processing units in the operating state in parallel to form one logical link as a wireless transmission path.

  As described above, the representative signal processing circuit 210 includes a processing function for transferring the control information of the optimum number of transmission links and the reception preparation completion notification between the wireless transmission devices in cooperation with the logical link formation control circuit 230. Therefore, the representative signal processing circuit 210 is assigned the lowest sequential number on the assumption that it is always in an operating state.

  The operation of the wireless transmission device 200 according to the second embodiment configured as described above will be described with reference to FIGS.

  FIG. 6 is a flowchart showing the operation of the transmission processing of the wireless transmission device 200.

  FIG. 7 is a flowchart showing the operation of the reception process of the wireless transmission device 200.

  FIG. 8 is a sequence diagram illustrating the relationship between the components in the transmission operation when the optimum number of transmission links of the wireless transmission device 200 is increased.

  FIG. 9 is a sequence diagram illustrating a relationship between each component in the reception operation of the wireless transmission device 200.

  FIG. 10 is a sequence diagram illustrating the relationship between the components in the transmission operation when the optimum number of transmission links of the wireless transmission device 200 decreases.

  First, referring to FIG. 6 and FIG. 8 as appropriate, the operation of the transmission processing of the wireless transmission device 200 will be described.

  In step S131 of FIG. 6, the wireless transmission device 200 calculates the optimum number of transmission links from the transmission data amount. As described above, this is because the logical link formation control circuit 230 uses the transmission processing rate calculated based on the transmission data amount input from the input transmission path that is constantly monitored by the traffic monitoring circuit 220 as the physical value of the transmission processing unit. It is obtained by dividing by the bandwidth of the link.

  Further, the traffic monitoring circuit 220 notifies the logical link formation control circuit 230 when there is a predetermined increase / decrease change in the average transmission transmission rate monitored for a certain period of time. A value that requires control to increase the number of optimal transmission links by increasing the transmission transmission rate, or conversely to control to decrease the number of optimal transmission links by decreasing the transmission transmission rate, is set in advance as a reference value for notifying the increase / decrease change. ing.

  Therefore, when the logical link formation control circuit 230 recalculates and updates the optimum number of transmission links based on the transmission transmission rate notified from the traffic monitoring circuit 220, the logical link formation control circuit 230 determines increase / decrease in the number of updated optimum transmission links. (S132).

  The logical link formation control circuit 230 performs processing when the optimum transmission link number increases (S132, increase) or processing when the optimum transmission link number decreases (S132, decrease) based on the determination result of step S132.

  The control for the transmission processing unit and the reception processing unit of the signal processing circuits 210, 211, 212 to 21n differs depending on whether the optimum number of transmission links has increased or decreased.

  When the optimum number of transmission links increases, a new transmission processing unit is added and operated. Therefore, it is necessary to prepare for reception by operating the reception processing unit to be added first in the opposite radio transmission apparatus. On the other hand, when the optimum number of transmission links decreases, a part of the transmission processing unit in operation is stopped, so there is no problem even if the reception processing unit in the opposite radio transmission apparatus is stopped later.

  Note that the initial operation for initially operating all the transmission processing units necessary for the transmission processing is the same as the operation concept for increasing the optimum number of transmission links, and the same operation as when the optimum number of transmission links is increased is performed. . In other words, in the case of the initial operation, step S132 is skipped and the processing after step S133 is performed.

  The operation so far corresponds to steps S151 to S153 in the sequence of FIG. Hereinafter, an initial operation for operating all necessary transmission processing units first and a transmission operation when the optimum number of transmission links is increased will be described. Note that the transmission operation process when the optimum number of transmission links decreases after step S136 in FIG. 6 will be described later with reference to FIG.

  The logical link formation control circuit 230 transmits the optimum number of transmission links calculated in step S131 to the opposing wireless transmission device (S133). As described above, this is because the reception processing unit in the opposing wireless transmission device is operated first to prepare for reception.

  The logical link formation control circuit 230 outputs information on the optimum number of transmission links to the representative signal processing circuit 210 so as to send the calculated optimum number of transmission links to the opposite wireless transmission device. Referring to FIG. 5, a thick line arrow from the logical link formation control circuit 230 to the transmission processing unit of the representative signal processing circuit 210 is a transmission information signal line for transmitting the optimal transmission link number information.

  The representative signal processing circuit 210 that has received the optimal transmission link number information from the logical link formation control circuit 230 inserts it into the radio frame of the transmission traffic received from the transmission signal conversion circuit 240, and transmits the opposite radio signal via the radio transmission path. Send to device. Referring to FIG. 5, the thin line arrow from the transmission signal conversion circuit 240 to the transmission processing unit of each signal processing circuit is a signal line for transmitting a radio frame of transmission traffic.

  Further, the operations so far correspond to steps S154 and S155 in the sequence of FIG.

  The opposite radio transmission apparatus that has received the optimum number of transmission links operates the number of reception processing units corresponding to the optimum number of transmission links in the signal processing circuit. When reception preparation is completed by the operation of the reception processing unit, a reception preparation completion notification indicating that reception preparation is completed is returned. Note that the reception operation in the opposite radio transmission apparatus is the same as the reception operation of the radio transmission apparatus 200 described separately with reference to FIG. 7 and FIG.

  The representative signal processing circuit 210 receives the radio frame of the received traffic including the reception preparation completion notification returned from the opposite radio transmission apparatus by the reception processing unit (S134, S156 in FIG. 8). Then, the representative signal processing circuit 210 extracts a reception preparation completion notification from the received radio frame and transmits it to the logical link formation control circuit 230 (S157 in FIG. 8).

  Referring to FIG. 5, a thick arrow pointing from the reception processing unit of the representative signal processing circuit 210 to the logical link formation control circuit 230 is a reception information signal line for transmitting a reception preparation completion notification. In addition, the radio frame of the received traffic received by the reception processing unit of each signal processing circuit is transmitted through a signal line indicated by a thin dashed arrow toward the received signal conversion circuit 250.

  Receiving the reception preparation completion notification, the logical link formation control circuit 230 sets only the transmission processing units of the signal processing circuits corresponding to the optimal number of transmission links calculated in step S131 (S153 in FIG. 8) to the operating state (S135). , S158 in FIG. That is, in the initial state, among the plurality of signal processing circuits, only the transmission processing units of the number of signal processing circuits corresponding to the optimal number of transmission links are set to the operating state. Further, when the updated optimum number of transmission links is increased and the number of physical links already in use is further increased, the transmission processing units of the number of signal processing circuits corresponding to the increased number are put into an operation state.

  At this time, the transmission processing units of the required number of signal processing circuits are operated in ascending order of the assigned serial numbers.

  Referring to FIG. 5, thick dotted arrows directed from the logical link formation control circuit 230 to the transmission processing units of the signal processing circuits 210, 211, 212 to 21 n are control lines that control the operation of each transmission processing unit. The logical link formation control circuit 230 controls the operation of a desired transmission processing unit using this control line.

  For example, when the optimal number of transmission links is “2”, the transmission processing units of the representative signal processing circuit 210 and the signal processing circuit 211 are set to the operating state, and the transmission processing units included in the other signal processing circuits are set to the stopped state. Is done. That is, only the transmission processing units included in the number of signal processing circuits corresponding to the optimal number of transmission links are set in an operating state. The transmission processing unit of the representative signal processing circuit is always in use. When the updated optimum number of transmission links increases to “3”, the transmission processing unit of the signal processing circuit 212 is operated.

  That is, when the logical link formation control circuit 230 sets only the number of transmission processing units corresponding to the optimum number of transmission links to the operating state, the number of transmissions corresponding to the optimum number of transmission links is assigned in ascending order of the assigned serial numbers. Put the processing unit in the operating state. Then, when the optimum number of transmission links increases, when the number of transmission processing units corresponding to the increased number is put into an operation state, from the number next to the serial number of the oldest number attached to the transmission processing unit in operation In ascending order, the number of transmission processing units corresponding to the increase in the optimal number of transmission links is put into an operating state.

  The logical link formation control circuit 230 in which the number of transmission processing units corresponding to the optimal number of transmission links is in the operating state wirelessly transmits one logical link using the physical links formed by the transmission processing units in the operating state in parallel. A path is formed (S139, S159 in FIG. 8).

  The above is the operation of the transmission process of the wireless transmission device 200 of the second embodiment.

  Next, with reference to FIG. 7 and FIG. 9 as appropriate, the operation of the reception process of the wireless transmission device 200 will be described.

  This reception processing operation is also the operation of the opposite radio transmission apparatus in the transmission processing operation described above. In the operation of the reception process, an example in which the number of received optimum transmission links has been updated and decreased will also be mentioned.

  The radio transmission device 200 receives the radio frame of the received traffic from the opposite radio transmission device by the reception processing unit of the signal processing circuits 210, 211, 212 to 21n. The optimum number of transmission links determined and transmitted by the opposite radio transmission apparatus is included in a radio frame handled by the representative signal processing circuit and transmitted.

  Therefore, in the case of reception processing, the representative signal processing circuit 210 extracts the optimum transmission link number information determined by the opposite wireless transmission device from the radio frame received by the reception processing unit (S141, S142, S161 in FIG. 9).

  The representative signal processing circuit 210 transmits the extracted optimum transmission link number information to the logical link formation control circuit 230 (S162 in FIG. 9). Referring to FIG. 5, a thick line arrow from the reception processing unit of the representative signal processing circuit 210 to the logical link formation control circuit 230 is a reception information signal line for transmitting the optimum transmission link number information received from the opposite wireless transmission apparatus. is there.

  The logical link formation control circuit 230 that knows the optimum number of transmission links determined by the opposite radio transmission apparatus determines the number of reception processing units corresponding to the optimum number of transmission links (S143, S163 in FIG. 9).

  Then, the logical link formation control circuit 230 activates only the determined reception processing unit (S144, S164 in FIG. 9). When the number of received optimal transmission links is increased and the number of physical links already in use is further increased, the reception processing units of the number of signal processing circuits corresponding to the increased number are set in an operating state.

  At this time, the logical link formation control circuit 230 operates the reception processing units of the required number of signal processing circuits in ascending order of the assigned serial numbers.

  Conversely, when the number of received optimal transmission links decreases and the number of physical links already in use is decreased, the reception processing units of the number of signal processing circuits corresponding to the decreased number are stopped.

  Referring to FIG. 5, a thick dashed line arrow from the logical link formation control circuit 230 to the reception processing unit of the signal processing circuit (210, 211, 212 to 21n) is a control line for controlling the operation of each reception processing unit. is there. The logical link formation control circuit 230 controls the operation of a desired reception processing unit using this control line.

  For example, when the optimum number of transmission links notified from the opposite radio transmission apparatus is “2”, the reception processing units of the representative signal processing circuit 210 and the signal processing circuit 211 are set to the operation state and are included in the other signal processing circuits. The reception processing unit to be stopped is brought into a stopped state. In other words, only the reception processing units included in the number of signal processing circuits corresponding to the optimum number of transmission links notified from the opposite wireless transmission device are put into operation. The reception processing unit of the representative signal processing circuit is always in use. Further, when the received optimum transmission link number increases to “3”, the reception processing unit of the signal processing circuit 212 is operated.

  That is, when the logical link formation control circuit 230 sets only the number of reception processing units corresponding to the optimal number of transmission links to the operating state, the logical link formation control circuit 230 receives the number of receptions corresponding to the optimal number of transmission links in order of the assigned serial numbers. Put the processing unit in the operating state. And when the optimal number of transmission links increases, when the number of reception processing units corresponding to the increase number is put into operation, the number next to the oldest serial number assigned to the reception processing unit in operation In ascending order, the number of reception processing units corresponding to the increase in the optimal number of transmission links is put into an operating state.

  In addition, when the number of the optimal transmission links received decreases, the logical link formation control circuit 230 counts the number corresponding to the decrease in the number of optimal transmission links in order of oldest number from the receiving processing unit in operation with the oldest number. The reception processing unit of is stopped.

  The logical link formation control unit 230 that has activated only the determined reception processing unit returns a reception preparation completion notification indicating that preparation for reception on the newly formed logical link is completed to the opposite wireless transmission device (S145, (S165, 166 in FIG. 9).

  The reception preparation completion notification is transferred from the logical link formation control unit 230 to the representative signal processing circuit 210, and is inserted into a radio frame of transmission traffic by the transmission processing unit and transmitted to the opposite radio transmission apparatus. Referring to FIG. 5, a thick line arrow from the logical link formation control circuit 230 to the transmission processing unit of the representative signal processing circuit 210 is a transmission information signal line for transmitting a reception preparation completion notification.

  In addition, the logical link formation control circuit 230 in which the number of reception processing units corresponding to the optimal number of transmission links is in an operating state is used as a wireless transmission path of one logical link by using the physical links of the reception processing units in the operating state in parallel. It handles (S146, S167 of FIG. 9).

  On the other hand, as described in the transmission process, in the opposite radio transmission apparatus on the transmission side that has received the reception preparation completion notification, the number of transmission processing units corresponding to the optimal number of transmission links operates, and these physical links are parallelized. A wireless transmission path of one used logical link is formed.

  The above is the operation of the reception process of the wireless transmission device 200 of the second embodiment.

  Next, with reference to FIG. 6 and FIG. 10 as appropriate, the operation of the transmission process when the optimum number of transmission links of the wireless transmission device 200 decreases will be described.

  As described with reference to FIG. 6, the logical link formation control circuit 230 determines whether or not the number of optimum transmission links calculated based on the transmission transmission rate notified from the traffic monitoring circuit 220 is increased or decreased in step S132. The following description is a description of the processing (S132, decrease) when the optimum number of transmission links is decreased in this determination. In FIG. 10, the operations of steps S171 to S173 are applicable.

  The logical link formation control circuit 230 that has determined the decrease in the optimal number of transmission links operates only the transmission processing units of the signal processing circuits corresponding to the optimal number of transmission links (S136, S174 in FIG. 10).

  Referring to FIG. 5, thick dotted arrows directed from the logical link formation control circuit 230 to the transmission processing units of the signal processing circuits 210, 211, 212 to 21 n are control lines that control the operation of each transmission processing unit. The logical link formation control circuit 230 controls the operation of a desired transmission processing unit using this control line.

  For example, it is assumed that the optimum number of transmission links so far is “3” and that the transmission processing units of the representative signal processing circuit 210, the signal processing circuit 211, and the signal processing circuit 212 are in an operating state. When the optimum number of transmission links calculated in step S131 becomes “2”, step S136 is executed in the determination of step S132 (S132, decrease).

  In step S136, a process of setting only the transmission processing units of the number of signal processing circuits corresponding to the changed optimal transmission link number “2” is performed. In this case, since one of the operating transmission processing units is set in the stopped state, the transmission processing unit of the signal processing circuit 212 to which the oldest number is assigned among the operating transmission processing units is in the stopped state. To be made.

  In other words, when the optimum number of transmission links decreases, the logical link formation control circuit 230 transmits a number corresponding to the number of reductions in the optimum number of transmission links from the active transmission processing unit assigned the oldest number in order of oldest number. The processing unit is stopped.

  The logical link formation control circuit 230 in which the number of transmission processing units in the operating state is matched with the optimum number of transmission links transmits the optimum number of transmission links calculated in step S131 to the opposite radio transmission apparatus (S137, S175, S176 in FIG. 10). ). This is to stop the operation of the reception processing unit in the opposite wireless transmission device corresponding to the transmission processing unit whose operation is stopped in the wireless transmission device.

  The process for transmitting the optimum number of transmission links to the opposite wireless transmission apparatus is the same as the process described in step S133.

  The logical link formation control circuit 230 transmits the information on the optimum number of transmission links to the representative signal processing circuit 210 using the transmission information signal line described above in order to send the optimum number of transmission links to the opposite radio transmission apparatus. The representative signal processing circuit 210 inserts the optimum number of transmission links into the radio frame of the transmission traffic and transmits it to the opposite radio transmission apparatus via the radio transmission path.

  The opposite radio transmission apparatus that has received the optimum number of transmission links sets the number of reception processing units corresponding to the optimum number of transmission links to the operating state by the signal processing circuit. That is, in this case, since one of the operating reception processing units is stopped, the reception processing unit of the signal processing circuit 212 assigned the oldest number of the operating reception processing units. Is made to stop. Note that the reception operation in the opposite radio transmission apparatus is the same as the reception operation of the radio transmission apparatus 200 described with reference to FIGS. 7 and 9.

  A reception preparation completion notification is returned from the opposite radio transmission apparatus that has completed control to make the number of operating reception processing units the same as the optimal number of transmission links.

  The representative signal processing circuit 210 receives the radio frame of the received traffic including the reception preparation completion notification returned from the opposite radio transmission apparatus by the reception processing unit (S138, S177 in FIG. 10). Then, the representative signal processing circuit 210 extracts a reception preparation completion notification from the received radio frame, and transmits the reception preparation completion notification to the logical link formation control circuit 230 using the reception information signal line described above (FIG. 10). S178).

  Upon receiving the reception preparation completion notification, the logical link formation control circuit 230 forms one logical link as a wireless transmission path using the physical links formed by the transmission processing units in the operating state in parallel (S139, FIG. 10). S179).

  The above is the operation of the transmission process when the optimum number of transmission links of the wireless transmission device 200 of the second embodiment is reduced.

  In the second embodiment, it has been described that the traffic monitoring circuit 220 notifies the logical link formation control circuit 230 when there is a predetermined increase / decrease change in the average transmission transmission rate monitored for a certain period of time. .

  However, the traffic monitoring circuit 220 may be configured to periodically notify the logical link formation control circuit 230 of the transmission transmission rate without identifying changes in the transmission transmission rate. In this case, the logical link formation control circuit 230 is configured to identify a change in increase / decrease in the notified transmission transmission rate and determine whether or not the optimum number of transmission links should be changed.

  As described above, in this embodiment, when the transmission transmission rate is increased, link aggregation control is performed by increasing the physical links after the preparation of the reception processing unit corresponding to the physical link to be increased is completed. On the other hand, when the transmission transmission rate decreases, link aggregation control is performed in which the physical links are reduced and the physical links are reduced after the operation of the corresponding reception processing unit is stopped.

  For this reason, link aggregation control in which the transmission processing unit and the reception processing unit are changed to the optimum number with respect to the opposite wireless transmission device is quickly executed in accordance with the change in the traffic amount processed by the wireless transmission device.

  Further, in the same wireless transmission device, an optimal number of transmission processing units and reception processing units are used for each data amount passing through the transmission direction and the reception direction. That is, each of the plurality of signal processing circuits includes a transmission processing unit and a reception processing unit. However, a different number of transmission processing units and reception processes are provided depending on the amount of data passing through the transmission direction and the reception direction. Parts can be used. Then, unnecessary transmission processing units and reception processing units are stopped.

  Therefore, in the present embodiment, each of the transmission processing unit and the reception processing unit is controlled to an optimum number of uses according to the amount of traffic that passes, and the power consumption of the entire wireless transmission device can be reduced.

DESCRIPTION OF SYMBOLS 1 Wireless transmission system 10 Transmission side wireless transmission apparatus 11, 12, 13, 1n Transmission processing means 20 Reception side wireless transmission apparatus 21, 22, 23, 2n Reception processing means 100, 200 Wireless transmission apparatus 110, 111, 112, 11n Transmission Processing means 120, 121, 122, 12n Reception processing means 130 Traffic monitoring means 140 Logical link formation control means 210 Representative signal processing circuit 211, 212, 213, 21n Signal processing circuit 220 Traffic monitoring circuit 230 Logical link formation control circuit 240 Transmission signal Conversion circuit 250 Received signal conversion circuit

Claims (9)

A plurality of transmission processing means constituting a physical link having a predetermined band for transmitting wireless data is provided, and the number of physical links necessary for securing the necessary transmission band calculated based on the data amount of input transmission data is provided. A transmission-side radio transmission apparatus that calculates and outputs the optimum number of transmission links that is the number of the corresponding transmission processing units;
A plurality of reception processing means for configuring a physical link having a predetermined band for receiving wireless data, and receiving the optimum number of transmission links output from the transmission-side wireless transmission device, among the plurality of reception processing means, A reception-side wireless transmission device that outputs only a reception preparation completion notification that is a notification that reception preparation has been completed, with only the number of reception processing units corresponding to the optimal number of transmission links in an operating state,
When the transmission-side wireless transmission device receives the reception preparation completion notification output from the reception-side wireless transmission device, only the number of the transmission processing units corresponding to the optimal number of transmission links among the plurality of transmission processing units. , And forming one logical link as a wireless transmission path using the physical links formed by each of the transmission processing means in the operating state in parallel ,
The plurality of transmission processing means includes representative transmission processing means for inserting control information into a radio frame of transmission traffic and transmitting the control information to the reception-side radio transmission device,
The plurality of reception processing means include representative reception processing means for extracting the control information from a radio frame of received traffic received from the transmitting-side radio transmission device,
The wireless transmission system , wherein the control information includes the updated optimum transmission link number that is the optimum transmission link number or the recalculated optimum transmission link number . The transmitting-side radio transmission device, when the updated optimum number of transmission links is the optimum number of transmission links and re-calculated is increased, and sends the updated optimal number of transmission links to said receiving-side radio transmission device, the update best When the reception preparation completion notification is received from the reception-side wireless transmission apparatus, the number corresponding to the increase in the number of update optimum transmission links when receiving the reception preparation completion notification corresponding to the number of transmission links corresponding to the number of transmission links. The transmission processing means is added to be in an operating state, and one physical link is formed as a wireless transmission path using the physical links formed by each of the transmission processing means in the operating state in parallel.
The reception-side wireless transmission device adds the number of reception processing means corresponding to the increase in the number of update optimal transmission links when the number of the update optimal transmission links received from the transmission-side wireless transmission device has increased. 2. The wireless transmission system according to claim 1, wherein the wireless communication system is in an operating state and transmits the reception preparation completion notification to the transmission-side wireless transmission device. The transmitting-side radio transmission device, when the updated optimum number of transmission links is the optimum number of transmission links and re-calculated is reduced, stopping the transmission processing unit number corresponding to the reduced number of the update optimum number of transmission links The update optimum transmission link number is transmitted to the reception-side radio transmission apparatus, and the reception preparation completion notification is a notification that the number of physical links corresponding to the update optimum transmission link number has been prepared for reception. When received from the receiving-side wireless transmission device, one physical link is formed as a wireless transmission path by using the physical links formed by each of the transmission processing means in an operating state in parallel,
When the number of the update optimum transmission links received from the transmission side radio transmission device is decreasing, the reception side wireless transmission device stops the number of the reception processing means corresponding to the decrease number of the update optimum transmission links. The wireless transmission system according to claim 1, wherein the reception preparation completion notification is returned. A plurality of transmission processing means for forming a physical link having a predetermined band for transmitting wireless data;
A plurality of reception processing means for forming a physical link having a predetermined band for receiving wireless data;
Traffic monitoring means for monitoring the input transmission path and calculating the necessary transmission bandwidth based on the amount of input transmission data;
The optimum number of transmission links, which is the number of the transmission processing means corresponding to the number of physical links necessary for securing the necessary transmission bandwidth calculated by the traffic monitoring means, is calculated, and the optimum number of transmission links is determined as an opposite radio. When the reception preparation completion notification, which is a notification that the number of physical links corresponding to the optimal number of transmission links is completed, is received from the opposite wireless transmission device, the transmission processing means Among them, only the number of the transmission processing means corresponding to the optimum number of transmission links is set in an operating state, and one physical link is wirelessly transmitted by using the physical links formed by each of the transmission processing means in the operating state in parallel. Logical link formation control means formed as a path,
When the logical link formation control means receives the optimum number of transmission links from the opposite radio transmission apparatus, only the number of the reception processing means corresponding to the optimum number of transmission links among the plurality of reception processing means is put into an operating state. To return the reception ready notification ,
The plurality of transmission processing means includes representative transmission processing means for inserting the transmission control information output by the logical link formation control means into a radio frame of transmission traffic and transmitting it to the opposite radio transmission device,
The plurality of reception processing means include representative reception processing means for extracting reception control information from a radio frame of received traffic received from the opposite radio transmission apparatus and transmitting the extracted control information to the logical link formation control means,
In the case where the transmission control information inserted into the radio frame by the representative transmission processing means is the optimum transmission link number to be transmitted to the opposite radio transmission apparatus or the updated optimum transmission link number that is the recalculated optimum transmission link number, The reception control information extracted from the radio frame received by the representative reception processing means from the opposite radio transmission device is the reception preparation completion notification,
When the reception control information extracted from the radio frame received by the representative reception processing unit from the opposite radio transmission apparatus is the optimum transmission link number or the updated optimum transmission link number, the representative transmission processing unit adds the radio frame to the radio frame. The radio transmission apparatus according to claim 1, wherein the transmission control information to be inserted is the reception preparation completion notification transmitted to the opposite radio transmission apparatus. The logical link formation control means includes:
When the updated optimum transmission link number that is the recalculated optimum transmission link number increases, the updated optimum transmission link number is transmitted to the opposite radio transmission apparatus, and the number of the physical links corresponding to the updated optimum transmission link number When the reception preparation completion notification is received from the opposite wireless transmission device, the number of the transmission processing means corresponding to the increase in the number of the update optimum transmission links is added to the operation state. Then, one physical link is formed as a wireless transmission path by using the physical links formed by each of the transmission processing means in the operating state in parallel,
When the number of the update optimum transmission links received from the opposite radio transmission apparatus has increased, the number of the reception processing means corresponding to the increase in the number of the update optimum transmission links is added to the operation state, and the reception preparation 5. The wireless transmission device according to claim 4, wherein a completion notification is returned. The logical link formation control means includes:
When the updated optimum transmission link number that is the recalculated optimum transmission link number decreases, the number of the transmission processing means corresponding to the reduced number of the updated optimum transmission link number is stopped, and the updated optimum transmission link number is set. When the reception preparation completion notification is received from the opposite wireless transmission device, it is transmitted to the opposite wireless transmission device and the reception preparation completion notification corresponding to the number of the update optimum transmission links is completed. Forming one logical link as a wireless transmission path using the physical links formed by each of the transmission processing means in parallel,
If the number of the update optimum transmission links received from the opposite radio transmission apparatus is decreasing, the number of the reception processing means corresponding to the decrease in the number of the update optimum transmission links is stopped and the reception preparation completion notification is returned. The wireless transmission device according to claim 4 or 5, wherein A serial number is assigned to each of the plurality of transmission processing means and the plurality of reception processing means,
The logical link formation control circuit includes:
When only the number of transmission processing means corresponding to the number of optimal transmission links or only the reception processing means is put into operation, the number of transmission processing means corresponding to the number of optimal transmission links in ascending order of the serial numbers. Or putting the reception processing means in an operating state,
When the number of the transmission processing means or the reception processing means corresponding to the increase in the number of the update optimum transmission links is set to the operating state, the oldest value assigned to the transmission processing means or the reception processing means in operation. The number of the transmission processing means or the reception processing means corresponding to the increase in the number of the update optimum transmission links, in ascending order from the serial number next to the serial number of the serial number,
When the number of the transmission processing means or the reception processing means corresponding to the number of reductions in the number of update optimum transmission links is stopped, among the active transmission processing means or the reception processing means, the old serial number The radio according to any one of claims 4 to 6, wherein a number of the transmission processing units or the reception processing units corresponding to a decrease number of the update optimum transmission link number are stopped in order of number. Transmission equipment. Necessary for a transmission-side wireless transmission apparatus having a plurality of transmission processing means constituting a physical link having a predetermined band for transmitting wireless data to secure a necessary transmission band calculated based on the data amount of input transmission data Calculating and outputting the optimum number of transmission links, which is the number of the transmission processing means corresponding to the number of physical links,
When the reception-side wireless transmission device including a plurality of reception processing units that configure a physical link having a predetermined band for receiving wireless data receives the optimum number of transmission links output by the transmission-side wireless transmission device, Of the reception processing means, only the number of the reception processing means corresponding to the optimum number of transmission links is put into an operation state, and a reception preparation completion notification that is a notification of completion of reception preparation is output.
When the transmission side wireless transmission device receives the reception preparation completion notification output from the reception side wireless transmission device, only the number of the transmission processing units corresponding to the optimum number of transmission links among the plurality of transmission processing units. , And forming one logical link as a wireless transmission path using the physical links formed by each of the transmission processing means in the operating state in parallel ,
The plurality of transmission processing means includes representative transmission processing means for inserting control information into a radio frame of transmission traffic and transmitting the control information to the reception-side radio transmission device,
The plurality of reception processing means include representative reception processing means for extracting the control information from a radio frame of received traffic received from the transmitting-side radio transmission device,
The radio transmission method according to claim 1, wherein the control information includes the optimum transmission link number or the updated optimum transmission link number that is the recalculated optimum transmission link number . A wireless transmission device comprising a plurality of transmission processing means for forming a physical link having a predetermined band for transmitting wireless data and a plurality of reception processing means for forming a physical link having a predetermined band for receiving wireless data, Monitor the input transmission path, calculate the required transmission bandwidth based on the amount of input transmission data,
Calculating the optimum number of transmission links, which is the number of the transmission processing means corresponding to the number of physical links necessary to secure the necessary transmission bandwidth, and transmitting it to the opposite radio transmission device;
When receiving a reception preparation completion notification, which is a notification of completion of reception preparation on the number of physical links corresponding to the number of transmitted optimal transmission links, from the opposite wireless transmission device, the optimum transmission link among the plurality of transmission processing means Only one number of the transmission processing means corresponding to the number of transmission links is set in an operating state, and one physical link is formed as a wireless transmission path by using the physical links formed by each of the transmission processing means in the operating state in parallel. ,
When the optimum number of transmission links is received from the opposite radio transmission apparatus, only the number of the reception processing means corresponding to the optimum number of transmission links among the plurality of reception processing means is set in an operating state, and the reception preparation completion notification is sent. return to,
The plurality of transmission processing means includes representative transmission processing means for inserting transmission control information into a radio frame of transmission traffic and transmitting the information to the opposite radio transmission device,
The plurality of reception processing means include representative reception processing means for extracting reception control information from a radio frame of received traffic received from the opposite radio transmission device,
In the case where the transmission control information inserted into the radio frame by the representative transmission processing means is the optimum transmission link number to be transmitted to the opposite radio transmission apparatus or the updated optimum transmission link number that is the recalculated optimum transmission link number, The reception control information extracted from the radio frame received by the representative reception processing means from the opposite radio transmission device is the reception preparation completion notification,
When the reception control information extracted from the radio frame received by the representative reception processing unit from the opposite radio transmission apparatus is the optimum transmission link number or the updated optimum transmission link number, the representative transmission processing unit adds the radio frame to the radio frame. The radio transmission method according to claim 1, wherein the transmission control information to be inserted is the reception preparation completion notification transmitted to the opposite radio transmission apparatus .

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