JP5776193B2 - Wireless network system, wireless network transmission method, and wireless receiver - Google Patents

Description

The present invention relates to a radio network system for transmitting data by radio, to wireless network transmission side Ho及 beauty radio receiver.

  In recent wireless networks, the transmission capacity tends to increase, and a technique for securing a transmission band as wide as possible is indispensable. In order to ensure a wide transmission band, it is advantageous to increase the number of modulation levels. However, when the multi-level number of modulation is increased, it is easily affected by noise and the error rate is deteriorated. Therefore, when the wireless transmission quality decreases, the adaptive modulation system (AMR) that reduces the number of modulation levels and prevents the error rate from degrading can be used. Dealing with degradation is taking place.

  However, in the adaptive modulation system, when the wireless transmission quality is lowered, the multi-value number is lowered and the system gain is improved, so that the wireless transmission capacity is reduced. As a result, the wireless transmission capacity may be smaller than the required transmission capacity, which causes the high priority frame to occupy the transmission band in the wireless section and increase the transmission delay of the low priority frame. Becomes a network bottleneck.

  In addition, in a wireless network, one protection line with a different frequency is installed for N active lines, and when the line deteriorates or a hardware failure occurs, the line is switched to the protection line. There is known an (N + 1) method that can cope with the above.

  FIG. 9 is a block diagram of an example of such an (N + 1) wireless network. In FIG. 9, the transmission-side wireless communication apparatus 201 includes transmission-side interfaces 211a, 211b, 211c,..., A DIST (DIST: distribution) card 212, working system modulation units 213a, 213b, 213c,. Part 214 and controller 215.

  The transmission side interfaces 211a, 211b, 211c,... Are user interfaces for inputting layer 2 data. The transmission side interfaces 211a, 211b, 211c,... Have a layer 2 switch unit 221 and a radio frame unit 222.

  The active system modulation units 213a, 213b, 213c,... Modulate radio frames from the transmission side interfaces 211a, 211b, 211c,.

  The DIST card 212 includes a transmission switch 231. The DIST card 212 selects a radio frame to be transmitted from radio frames transmitted from the transmission side interfaces 211a, 211b, 211c,. Send to.

  The standby modulation unit 214 modulates the radio frame selected by the DIST card 212 and transmits it wirelessly.

  The reception-side wireless communication apparatus 202 has working-system demodulation units 251a, 251b, 251c,..., A standby-system demodulation unit 252, reception-side interfaces 253a, 253b, 253c,..., A DIST card 254, and a controller 255. doing.

  The active system demodulation units 251a, 251b, 251c,... Receive the radio signals transmitted from the active system modulation units 213a, 213b, 213c,. The demodulated radio frame is sent to the receiving side interfaces 253a, 253b, 253c,.

  The standby demodulation unit 252 receives the radio signal transmitted from the standby modulation unit 214 of the transmission-side radio communication apparatus 201, demodulates the radio frame, and sends the demodulated radio frame to the DIST card 254.

  The DIST card 254 has a data distribution unit 271 and distributes the radio frame demodulated by the standby demodulation unit 252 and sends it to the reception side interfaces 253a, 253b, 253c,.

  The reception side interfaces 253a, 253b, 253c,... Have a reception switch unit 261, a radio frame decomposition unit 262, and a layer 2 switch unit 263.

  FIG. 10 shows the operation when a failure occurs in the line from the active modulation unit 213a to the active demodulation unit 251a in such an (N + 1) wireless network.

  When a failure occurs in the line from the active modulation unit 213a to the active demodulation unit 251a, the controller 215 of the transmission-side wireless communication device 201 performs the following operation on the transmission switch 231 of the DST card 212, as shown in FIG. A command is given to select the output of the transmission side interface 211a.

  In addition, the controller 255 of the reception-side wireless communication device 202 gives a command to the reception switch unit 261 of the reception-side interface 253a so that the DIST card 254 side is selected.

  As a result, data to be transmitted on the line from the active modulation unit 213a to the active demodulation unit 251a is received from the transmission-side wireless communication apparatus 201 through the backup line from the standby modulation unit 214 to the standby demodulation unit 252. Communication is ensured even if a failure occurs in the line from the active modulation unit 213a to the active demodulation unit 251a.

  In addition, as shown in Patent Document 1, the data network has a trunk function using LACP (Link Aggregation Control Protocol) technology to aggregate a plurality of physical lines into one logical line. By using this, the transmission band of the line can be expanded. In Patent Document 1, when a failure is detected on a working link belonging to an aggregated link, the aggregator changes a part of the information in the control frame of the link aggregation setting protocol before and after the failure detection and transmits it to the opposite device. For the physical port of the backup link, a part of the information in the control frame of the link aggregation setting protocol is changed before and after the failure detection and transmitted to the opposite device, so that the link where the failure is detected can be reserved. It is described that the link is a link and the backup link is an aggregated link.

JP 2008-160227 A

  In the (N + 1) system wireless network as shown in FIG. 9 and FIG. 10, when a failure occurs in the working line, a spare line is substituted to avoid the failure. However, in the wireless network of the above (N + 1) system, when there is no failure in the working system line, the standby ruled line occupies the frequency and outputs the radio like the working system line, Not used as signal transmission, resources such as frequency and power are wasted. In the current wireless communication apparatus, hardware failure and continuous deterioration of the wireless line are rare phenomena, and the fact that the standby line is used for signal transmission is a great waste of resources.

  In addition, the one disclosed in Patent Document 1 needs to ensure that at least one link is excluded from the link aggregation target as a backup link when a failure occurs. The spare link removed from the link aggregation is not used for signal transmission and is a waste of resources.

In view of the above-described problems, the present invention provides a wireless network system and a wireless network capable of effectively using resources such as the frequency and power of the protection line in a wireless network having a plurality of active lines and protection lines. and to provide a transmission side Ho及 beauty radio receiver.

In order to solve the above-described problem, a wireless network system according to the present invention is a wireless network system in which a wireless transmission device and a wireless reception device are connected by a plurality of active lines and protection lines, and the wireless transmission system The apparatus includes: a plurality of transmission side interface units for inputting data to be transmitted; a plurality of active system modulation units for modulating and transmitting data on the active line; And selecting a data from the plurality of transmission-side interface units to be transmitted to the standby-side modulation unit, determining whether a line failure has occurred, and determining whether or not a line failure has occurred. If the failure has occurred, using the protection line as an alternative of the line that the line failure occurs, when the line failure has not occurred, the plurality of active system line Out to identify the most traffic large line, and a control unit for setting said protection line to use the most traffic line and is aggregated larger of the data of the active system line transmission of the plurality of active system line The wireless reception device includes: a plurality of active demodulation units that receive and demodulate data on the active channel; a standby demodulation unit that receives and demodulates data on the standby channel; and the standby demodulation a data distribution unit to distribute the data from part to the plurality of receiving-side interface unit, and a plurality of receiving-side interface unit for outputting the data transmitted, when the line failure occurs, the line failure There using the protection line as an alternative of the line occurring, when the line failure has not occurred, most traffic large times of the plurality of active system line Characterized in that identifying, and a control unit configured to use the transmission of data of the active system line by aggregating the most traffic large line of said protection line to said plurality of working system line the And

The wireless network transmission method according to the present invention is a wireless network transmission method of a wireless network system in which a wireless transmission device and a wireless reception device are connected by a plurality of active and standby lines, and in the wireless transmission device Determining whether or not a line failure has occurred; if the line failure has occurred, use a backup line as a substitute for the line in which the line failure has occurred; If not, the line with the highest traffic among the plurality of working lines is specified, and the protection line is aggregated with the line with the most traffic among the plurality of working lines to obtain data on the working line. In the case where the line failure occurs, the plurality of transmission side interface units are set to be used for transmission of data. Data is sent to the standby modulation unit, and the data on the standby system line is modulated and transmitted wirelessly. When the line failure has not occurred, the data from the plurality of transmission side interface units is transmitted. Select, send to the standby modulation unit and a plurality of active modulation units, modulate the data of the standby line and transmit by radio, modulate the data of the active line and transmit by radio, the wireless In the receiving device, when the line failure occurs, the standby line is used as an alternative to the line where the line failure occurs, and when the line failure does not occur, the plurality of active lines to identify the most traffic large line of the system line, set to use the protection line for data transmission of the active system line by aggregating the most traffic large line of the plurality of active system line When the line failure has occurred, the data of the backup system line is received and demodulated, and the data from the backup system demodulation unit is distributed to the plurality of reception side interface units and transmitted. When the line failure has not occurred, the standby line data is received and demodulated, the active line data is received and demodulated, and the standby demodulation unit and the plurality of Data from an active demodulator is distributed to the plurality of receiving side interface units, and transmitted data is output.

Radio receiving apparatus according to the present invention is a radio receiving device of a wireless network system that having a plurality of active system line and protection line, a plurality of working system demodulation for demodulating receiving data of the active system line and parts, and a standby system demodulator for receiving and demodulating a data protection line, a data distribution unit to distribute the data from the backup system demodulator to the plurality of receiving-side interface unit, the data transmitted and a plurality of receiving-side interface unit for outputting, when a line failure occurs, using the protection line as an alternative of the line that the line failure occurs, when the line failure has not occurred , wherein the plurality of active system to identify the most traffic large line of the line, the active system times the protection line by aggregating the most traffic large line of the plurality of active system line Characterized in that it comprises a control unit configured to use the transmission of data.

  According to the present invention, in a wireless network having a plurality of active lines and protection lines, when a line failure has not occurred, the protection line is assembled with the active lines by the trunk function to It is used for data transmission. As a result, the transmission band of the active line can be expanded, and resources such as the transmission capacity and communication power of the standby line can be used without waste.

1 is a block diagram showing a configuration of a wireless network system according to a first embodiment of the present invention. It is a block diagram which shows the structure of the transmission side interface in the 1st Embodiment of this invention. It is a block diagram which shows the structure of the DIST card | curd of the transmission side in the 1st Embodiment of this invention. It is a block diagram which shows the structure of the receiving side interface in the 1st Embodiment of this invention. It is a block diagram which shows the structure of the DIST card | curd | reception side of the receiving side in the 1st Embodiment of this invention. It is a flowchart which shows the operation | movement of the 1st Embodiment of this invention. It is a block diagram for demonstrating the signal transmission path | route of the radio | wireless network system which concerns on the 1st Embodiment of this invention. It is a block diagram for demonstrating the signal transmission path | route of the radio | wireless network system which concerns on the 1st Embodiment of this invention. It is a block diagram of an example of a wireless network of (N + 1) system. It is a block diagram for demonstrating the signal transmission path | route in the radio | wireless network of a (N + 1) system.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a wireless network system according to the first embodiment of the present invention.

  As shown in FIG. 1, the wireless network system according to the first embodiment of the present invention transmits layer 2 data wirelessly between a transmission-side wireless communication device 101 and a reception-side wireless communication device 102. Is. Here, the layer 2 means a data link layer of an OSI (Open System Interconnection) reference model. For example, Ethernet (registered trademark) is used as communication in layer 2.

  In the following description, for the sake of simplicity, the wireless communication device is divided into a transmission side and a reception side, but the present invention can be similarly applied to a wireless communication device in which transmission and reception are integrated. .

  In FIG. 1, a transmitting-side wireless communication apparatus 101 includes transmitting-side interfaces 111a, 111b, 111c,..., A DIST card 112, active system modulators 113a, 113b, 113c,. 115.

  The transmission side interfaces 111a, 111b, 111c,... Are user interfaces for inputting Ethernet (registered trademark) signals that are layer 2 data. Further, the transmission side interfaces 111a, 111b, 111c,... Have a trunk function using LACP (Link Aggregation Control Protocol) technology. The trunk function is to aggregate a plurality of physical lines and use them as one logical line. By using the trunk function, it is possible to expand the transmission band of the line.

  The active-system modulation units 113a, 113b, 113c,... Modulate radio frames from the transmission side interfaces 111a, 111b, 111c,.

  The DIST card 112 selects a radio frame to be transmitted from the radio frames sent from the transmission side interfaces 111a, 111b, 111c,... And sends it to the standby modulation unit 114.

  The standby modulation unit 114 modulates the radio frame selected by the DIST card 112 and transmits the modulated radio frame to the reception-side radio communication device 102 by radio. As the frequencies used in the active system modulators 113a, 113b, 113c,... And the standby system modulator 114, frequencies that do not cause mutual interference are used.

  The controller 115 uses the standby system line as a substitute for the active system line in which the failure has occurred when the active system line failure has occurred, and when the line failure has not occurred, the controller 115 Setting processing is performed on the transmission side interfaces 111a, 111b, 111c,..., And the DIST card 112 so that the working line is aggregated and the band of the working line is expanded and used.

  FIG. 2 is a block diagram illustrating a configuration of the transmission side interfaces 111a, 111b, 111c,... According to the first embodiment of the present invention. 2, the transmission side interfaces 111a, 111b, 111c,... Include a layer 2 switch unit 121 and radio framing units 122 and 123. The layer 2 switch unit 121 branches the input Ethernet (registered trademark) signal into two paths and outputs the branched signals to the radio frame units 122 and 123. The radio framing unit 123 frames an Ethernet (registered trademark) signal into a radio frame and outputs the radio frame to the active modulation units 113a, 113b, 113c,. The radio framing unit 122 frames an Ethernet (registered trademark) signal into a radio frame and outputs the radio frame to the DIST card 112.

  As described above, in the first embodiment of the present invention, the transmission side interfaces 111a, 111b, 111c,... Output radio frames to the active modulation units 113a, 113b, 113c,. And a radio framing unit 122 that outputs a radio frame to the DIST card 112.

  In the first embodiment of the present invention, when a line failure has not occurred, the line with the largest traffic and the protection line are aggregated and used by using the trunk function, thereby expanding the transmission band. I try to figure it out. In this case, in the transmission side interface 111a, 111b, 111c,..., Which has the largest traffic, the input Ethernet (registered trademark) signal is sent to the radio frame forming unit 122 and the radio frame forming unit 123 by the trunk function. Disperse. Then, the radio framing unit 122 sends the radio frame to the standby modulation unit 114 via the DIST card 112, and the radio framing unit 123 sends the radio frame to the working modulation units 113a, 113b, 113c,. As a result, the two physical lines of the standby line and the active line are aggregated into one logical line, and the transmission band can be doubled. At this time, among the transmission side interfaces 111a, 111b, 111c,..., Those of other lines close the output port to the DIST card 112.

  Further, in the first embodiment of the present invention, when a line failure occurs, a protection line is used instead of the failed working line. In this case, in the transmission side interface 111a, 111b, 111c,... Of the line where the failure has occurred, the radio frame forming unit 122 and the radio frame forming unit 123 generate the same radio frame, and the radio frame forming unit 122. Sends the radio frame to the DIST card 112, and the radio framing unit 123 sends the radio frame to the working modulation units 113a, 113b, 113c,. As a result, a radio frame can be transmitted using the backup line as a substitute for the failed working line.

  FIG. 3 is a block diagram showing the configuration of the DIST card 112 on the transmission side in the first embodiment of the present invention. As shown in FIG. 3, the DIST card 112 has a transmission switch unit 131. Based on a command from the controller 115, the transmission switch unit 131 selects a radio frame to be transmitted from radio frames transmitted from the transmission side interfaces 111a, 111b, 111c,. Output to.

  As described above, in the first embodiment of the present invention, when a line failure has not occurred, the line with the highest traffic and the protection line are aggregated by the trunk function to expand the transmission band. ing. In this case, the transmission switch unit 131 selects the line with the highest traffic among the transmission side interfaces 111a, 111b, 111c,.

  In the first embodiment of the present invention, when a line failure occurs, communication is ensured by using a backup line. In this case, the transmission switch unit 131 selects the transmission side interface 111a, 111b, 111c,.

  Next, the reception-side wireless communication device 102 will be described. As shown in FIG. 1, the reception-side wireless communication apparatus 102 includes working-system demodulation units 151a, 151b, 151c,..., A standby-system demodulation unit 152, reception-side interfaces 153a, 153b, 153c,. And a controller 155.

  The active system demodulation units 151a, 151b, 151c,... Receive the radio signals transmitted from the active system modulation units 113a, 113b, 113c,. The demodulated radio frame is sent to the receiving side interfaces 153a, 153b, 153c,.

  The standby demodulation unit 152 receives the radio signal transmitted from the standby modulation unit 114 of the transmission-side radio communication apparatus 101, demodulates the radio frame, and sends the demodulated radio frame to the DIST card 154.

  The DIST card 154 distributes the radio frame demodulated by the standby demodulator 152 and sends it to the receiving interfaces 153a, 153b, 153c,. The receiving interfaces 153a, 153b, 153c,... Have a trunk function using the LACP technology.

  The controller 155 uses the standby line as a substitute for the line in which the failure has occurred when a line failure has occurred. When the line failure has not occurred, the controller 155 Setting processing is performed on the reception side interfaces 153a, 153b, 153c,... So that the bandwidth of the active line is expanded and used.

  FIG. 4 is a block diagram illustrating a configuration of the reception-side interfaces 153a, 153b, 153c,... According to the first embodiment of the present invention. As shown in FIG. 4, the reception side interfaces 153a, 153b, 153c,... Have a reception switch unit 161, radio frame decomposition units 162 and 163, and a layer 2 switch unit 164.

  The reception switch unit 161 receives the radio frame from the active system demodulation units 151a, 151b, 151c,... And the radio frame from the DIST card 154, and selects the radio frame. Then, the reception switch unit 161 sends the selected radio frame to the radio frame decomposition unit 163. The radio frame decomposition unit 163 decomposes the radio frame from the reception switch unit 161 and reproduces the received data.

  The radio frame decomposition unit 162 decomposes the radio frame sent from the DIST card 154 and reproduces the received data.

  The layer 2 switch unit 164 generates and outputs an Ethernet (registered trademark) signal, which is layer 2 data, from the received data from the radio frame decomposition units 162 and 163.

  As described above, according to the first embodiment of the present invention, when a line failure has not occurred, transmission is performed by using a trunk function using a protection line for a line with the largest traffic when the line has the highest traffic. The band is expanded. In this case, the reception switch unit 161 in the line with the highest traffic among the reception side interfaces 153a, 153b, 153c,... Selects the radio frame from the active demodulation units 151a, 151b, 151c,. The frame is sent to the frame disassembly unit 163. The radio frame disassembling unit 163 disassembles the radio frames from the active system demodulation units 151a, 151b, 151c,... And sends them to the layer 2 switch unit 164. At this time, the radio frame disassembling unit 162 disassembles the radio frame from the standby demodulation unit 152 sent via the DIST card 154 and sends it to the layer 2 switch unit 164. The layer 2 switch unit 164 combines the data from the radio frame decomposition unit 163 and the data from the radio frame decomposition unit 162 by the trunk function to generate an Ethernet (registered trademark) signal. At this time, the reception side interface of the other line closes the input port from the DIST card 154, and the reception switch unit 161 selects the radio frame from the active system demodulation units 151a, 151b, 151c,.

  In the first embodiment of the present invention, when a line failure occurs, a protection line is used instead of the failed working line. In this case, the reception switch unit 161 in the line where the failure has occurred among the reception side interfaces 153a, 153b, 153c,... Selects the radio frame from the DIST card 154 and sends it to the radio frame decomposition unit 163. The radio frame disassembling unit 163 disassembles the radio frame of the protection line input from the DIST card 154 and sends it to the layer 2 switch unit 164. The layer 2 switch unit 164 generates an Ethernet (registered trademark) signal from the data from the radio frame decomposition unit 163.

  FIG. 5 is a block diagram showing the configuration of the DIST card 154 on the receiving side in the first embodiment of the present invention. As shown in FIG. 5, the DIST card 154 has a data distribution unit 171. The data distribution unit 171 sends the radio frame received by the standby demodulation unit 152 to the reception side interfaces 153a, 153b, 153c,.

  FIG. 6 is a flowchart showing the operation of the first exemplary embodiment of the present invention. In FIG. 6, the controller 115 of the transmission-side wireless communication apparatus 101 determines whether a failure such as a hardware failure or a line abnormality has occurred (step S101). If no failure has occurred (No in step S101), the controller 115 of the transmitting-side wireless communication apparatus 101 identifies the line with the highest traffic (step S102), and uses the trunk function to set the line with the highest traffic as the standby system line. Are set to form a single logical line (step S103). The transmission side interfaces 111a, 111b, 111c and the DIST card 112 are set (step S103). In addition, the controller 155 of the reception-side wireless communication apparatus 102 sets the reception-side interfaces 153a, 153b, and 153c so that the line with the highest traffic is aggregated with the protection line to form one logical line. (Step S104).

  If a failure has occurred in step S101 (Yes in step S101), the controller 115 of the transmission-side wireless communication apparatus 101 identifies the line in which the failure has occurred (step S105), and as a replacement for the failed line, The transmission side interfaces 111a, 111b, 111c and the DIST card 112 are set so as to use the protection line (step S106). Further, the controller 155 of the reception-side wireless communication apparatus 102 sets the reception-side interfaces 153a, 153b, and 153c so as to use the backup line as a substitute for the line where the failure has occurred (step S107).

  7 and 8 are diagrams for explaining a signal transmission path of the wireless network system according to the first embodiment of the present invention. FIG. 7 shows a transmission path when there is no line failure and traffic on the working line from the working modulation unit 113a to the working demodulation unit 151a becomes maximum.

  When the working line with no line failure and the maximum traffic is a line from the working modulation unit 113a to the working demodulation unit 151a, the protection line from the standby modulation unit 114 to the standby demodulation unit 152 is the working line. The working line from the modulating unit 113a to the working demodulator 151a is aggregated.

  As shown in FIG. 7, in this case, the controller 115 of the transmission-side wireless communication apparatus 101 gives a command to the transmission-side interface 111a to execute the trunk function. Further, the controller 115 of the transmission-side wireless communication apparatus 101 gives a command to the transmission switch unit 131 of the DST card 112 to select an output from the transmission-side interface 111a.

  In this case, the controller 155 of the reception-side wireless communication apparatus 102 sets the reception switch unit 161 of the reception-side interface 153a so that the active demodulation unit 151a is selected, and the trunk function is provided to the reception-side interface 153a. Command to execute.

  As a result, the data to be sent on the line from the working modulation unit 113a to the working demodulation unit 151a includes the line from the working modulation unit 113a to the working demodulation unit 151a, and the protection modulation unit 114 to the protection demodulation unit. The data is sent by a logical line obtained by aggregating two physical lines such as the line 152 and the transmission band can be doubled.

  FIG. 8 shows a transmission path when a failure occurs on the working line from the working modulation unit 113a to the working demodulation unit 151a.

  When a failure occurs in the working line from the working modulation unit 113a to the working demodulation unit 151a, the protection line from the working modulation unit 114 to the working demodulation unit 152 is transferred from the working modulation unit 113a to the working demodulation unit. It will be used as an alternative to the working line to 151a.

  In this case, as illustrated in FIG. 8, the controller 115 of the transmission-side wireless communication apparatus 101 gives a command to the transmission switch unit 131 of the DST card 112 to select the output of the transmission-side interface 111 a.

  In this case, the controller 155 of the reception-side wireless communication apparatus 102 performs setting so that the DIST card 154 side is selected with respect to the reception switch unit 161 of the reception-side interface 153a.

  As a result, data to be transmitted on the line from the active modulation unit 113a to the active demodulation unit 151a is transmitted from the transmission-side wireless communication apparatus 101 to the reception-side wireless communication via the line from the standby modulation unit 114 to the standby demodulation unit 152. Communication is ensured even if a failure occurs in the line from the active modulation unit 113a to the active demodulation unit 151a.

  As described above, in the wireless network system according to the first embodiment of the present invention, an (N + 1) -type wireless network having N (N is a positive integer) working lines and one protection line. In FIG. 2, when a line failure does not occur, the protection line is assembled with the working line and used for data transmission of the working line. As a result, the transmission band of the active line can be expanded, and resources such as the transmission capacity and communication power of the standby line can be used without waste.

  The active modulation units 113a, 113b, 113c,... And the standby modulation unit 114 have a function of an adaptive modulation scheme that improves the system gain by reducing the number of modulation levels when the wireless transmission quality decreases. You may do it. In the case of having the function of the adaptive modulation method, when the transmission band is reduced, the transmission capacity is also reduced at the same time, so that it may be difficult to cope with a network having a large transmission band. In the first embodiment of the present invention, since the transmission band can be expanded by the trunk function, it is possible to cope with a network having a large transmission band even when the function of the adaptive modulation method is provided.

  The present invention is not limited to the above-described embodiments, and various modifications and applications can be made without departing from the gist of the present invention.

101: Transmission-side wireless communication device 102: Reception-side wireless communication devices 111a, 111b, 111c, ...: Transmission-side interface 112: DIST cards 113a, 113b, 113c, ...: Working system modulation unit 114: Standby system modulation unit 115: Controller 121: Layer 2 switch unit 122, 123: Radio framing unit 131: Transmission switch unit 151a, 151b, 151c: Active system demodulation unit 152: Standby system demodulation unit 153a, 153b, 153c,...: Reception side interface 154: DST card 155: Controller 161: Reception switch unit 162, 163: Radio frame decomposition unit 164: Layer 2 switch unit 171: Data distribution unit

Claims (4)

A wireless network system in which a wireless transmission device and a wireless reception device are connected by a plurality of active lines and standby lines,
The wireless transmission device
A plurality of transmission side interface units for inputting data to be transmitted;
A plurality of active modulators that modulate the data of the active line and transmit by radio;
A standby modulation unit that modulates the data of the standby line and transmits the data wirelessly;
A data switch unit that selects data from the plurality of transmission side interface units and sends the data to the standby modulation unit;
It is determined whether or not a line failure has occurred. When the line failure has occurred, the backup line is used as a substitute for the line in which the line failure has occurred, and the line failure has occurred. If not, the line with the highest traffic among the plurality of working lines is specified, and the protection line is aggregated with the line with the most traffic among the plurality of working lines to obtain data on the working line. A control unit configured to be used for transmission of
With
The wireless receiver is
A plurality of active demodulation units that receive and demodulate data on the active line;
A standby demodulator that receives and demodulates data on the standby line;
A data distribution unit for distributing data from the standby demodulation unit to the plurality of reception side interface units;
A plurality of receiving side interface units for outputting transmitted data;
When the line failure occurs, the standby line is used as an alternative to the line where the line failure occurs, and when the line failure does not occur , among the plurality of working lines A control unit that identifies a line with the highest traffic and sets the standby line to be used for data transmission of the working line by aggregating with the line with the most traffic among the plurality of working lines;
A wireless network system comprising: 2. The radio network system according to claim 1, wherein a trunk function is used for aggregation of the protection line and the active line. A wireless network transmission method for a wireless network system in which a wireless transmission device and a wireless reception device are connected by a plurality of active and standby lines,
In the wireless transmission device,
It is determined whether or not a line failure has occurred, and when the line failure has occurred, a standby system line is used as a substitute for the line in which the line failure has occurred, and the line failure has occurred. If there is not, the line with the highest traffic among the plurality of working lines is identified, and the protection line is aggregated with the line with the most traffic among the plurality of working lines, and the data of the working line is Set it to be used for transmission,
Enter the data to be transmitted
When the line failure has occurred,
Select data from the plurality of transmission side interface units, send to the standby modulation unit,
Modulate the data on the protection line and transmit it wirelessly,
If the line failure has not occurred,
Select data from the plurality of transmission-side interface units, and send the data to a standby modulation unit and a plurality of active modulation units,
Modulate the data on the protection line and transmit it wirelessly,
Modulates the data of the working line and transmits it wirelessly,
In the wireless receiver,
When the line failure occurs, the standby line is used as an alternative to the line where the line failure occurs, and when the line failure does not occur , among the plurality of working lines Identify the line with the highest traffic, set the standby line to be aggregated with the line with the highest traffic among the plurality of working lines and use it for data transmission of the working line,
When the line failure has occurred,
Receive and demodulate the data on the protection line,
Distributing data from the standby demodulation unit to the plurality of reception side interface units,
Output the transmitted data,
If the line failure has not occurred,
Receive and demodulate the data on the protection line,
Receive and demodulate the data of the working line,
Distributing data from the standby demodulation unit and the plurality of active demodulation units to the plurality of reception side interface units,
Output the transmitted data,
A wireless network transmission method. A wireless receiver of a wireless network system having a plurality of active lines and standby lines,
A plurality of active demodulation units that receive and demodulate data on the active line;
A standby demodulator that receives and demodulates data on the standby line;
A data distribution unit for distributing data from the standby demodulation unit to the plurality of reception side interface units;
A plurality of receiving side interface units for outputting transmitted data;
When the line failure has occurred, the standby line is used as a substitute for the line where the line failure has occurred, and when the line failure has not occurred, the most of the plurality of working lines A control unit that identifies a line with high traffic and sets the standby line to be used for data transmission of the working line by aggregating with the line with the largest traffic among the plurality of working lines;
A radio receiving apparatus comprising:

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