JP2005244328A - Wireless transmitter and transmitting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide wireless transmitter and transmitting method in which the transmission of PDH data signal series is carried out simultaneously with the transmission of LAN data. <P>SOLUTION: The wireless transmitter comprises a plurality of pulse stuffing circuits receiving PDH data signal series as an input, a wireless frame multiplexing circuit, a wireless transmitting/receiving circuit, and an LAN terminating circuit. When LAN receiving data from m LAN wired transmission lines is transmitted, the LAN terminating circuit determines the transmission capacity on the wireless frame side for the LAN wired transmission line in units of channel of wireless frame according to a mapping control signal, creates multiplex data by performing capsulation in units of packet, multiplexes the multiplex data being inputted from the LAN terminating circuit to the transmission region of wireless frame according to a mapping control signal, creates assignment wireless frame data for the transmission region of PDH data signal series other than the transmission region of wireless frame transmission region assigned with LAN receiving data, and transmits it from the wireless transmitting/receiving circuit to a counter unit through a transmission line. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a radio transmission apparatus and method, and more particularly to an apparatus and method for transmitting a line data signal sequence and LAN data.

  In a conventional wireless transmission device, a plurality of PDH (Plesiochronous Digital Hierarchy) data signal sequences are multiplexed and transmitted in a wireless frame.

  With the widespread use of LAN (Local Area Network) networks, there is an increasing need to mount a LAN interface and transmit LAN data via a wireless transmission path.

  In addition, for a plurality of LAN wired transmission paths, a function for effectively using the limited wireless transmission capacity such as changing the wireless transmission capacity according to the traffic of the network connected to the LAN wired transmission path. Is required.

  By the way, in a SDH (Synchronous Digital Hierarchy) transmission apparatus, a data communication method for transmitting LAN data using an STM-1 frame structure is known (see Patent Document 1 described later). FIG. 5 is a diagram showing a configuration of a data communication system described in Patent Document 1 described later. In FIG. 5, reference numeral 1 denotes a trunk transmission line, which performs STM-1 data transmission. Reference numeral 2 denotes a common unit, which performs demultiplexing / multiplexing by transferring the clock from the transmission line to the clock of each device by destuffing / staff, and multiplexing and extracting external input data to the STM-1 frame. I do. Reference numeral 3 denotes a burst data system line set unit for each message with respect to a band (50 Mb / s, 100 Mb / s, etc.) of burst data such as LAN data input from the PC-LAN 5 in advance allocated to the STM-1 frame. Transmit sequentially. At the time of reception, the separated data is stored for each message and transmitted to the PC-LAN 5. Reference numeral 4 denotes a low-order group / high-order group line set unit (stuff synchronization circuit) of the digital hierarchy, which is synchronized with data (6.3 Mb / s, 2 Mb / s, 1.Mb) according to the band interface allocated for synchronization. 5Mb / s etc.) Multiplexing is performed. Reference numeral 6 denotes a data system of a low-order group / high-order group of the digital hierarchy. The low-order group data 6 is stuff-synchronized with the STM-1 frame frequency by the stuff synchronization circuit 4 and multiplexed into the STM-1 frame.

  Thereby, the low-order group PDH data signal sequence and the LAN data are simultaneously transmitted via the STM-1 frame.

JP 05-316119 A (2nd page, FIG. 1)

  However, the conventional communication system shown in FIG. 5 has the following problems.

  The first problem is that the circuit becomes complicated and large. The reason is that the transmission is performed in the STM-1 frame, and it is necessary to perform stuff synchronization and pointer processing every time multiplexing is performed from the low-order group to the high-order group.

  The second problem is that the throughput on the wireless transmission path side cannot be guaranteed for each LAN network. The reason for this is that since there is no plurality of wired transmission path interfaces, it is not possible to have separate bands on the wireless transmission path side for a plurality of LAN network networks.

  Accordingly, an object of the present invention is to provide a wireless transmission apparatus and method for simultaneously transmitting a PDH data signal sequence and LAN data.

  Another object of the present invention is to provide a wireless transmission apparatus and method for efficiently transmitting LAN data.

  Still another object of the present invention is to provide a wireless transmission apparatus and method capable of providing a service that guarantees a band on the wireless transmission path side for each LAN wired transmission path while achieving the above object.

  In order to achieve the above object, the invention disclosed in the present application is generally configured as follows.

  A wireless transmission device according to one aspect of the present invention is a wireless transmission device that stuff-multiplexes and transmits a plurality of PDH (Plesiochronous Digital Hierarchy) data signal sequences in a wireless frame, and terminates a LAN (Local Area Network) interface. A function is provided, and means for multiplexing and transmitting LAN data in a payload of a radio frame assigned as a PDH data signal sequence transmission area is provided.

  The wireless transmission apparatus according to the present invention stores reception data input from a plurality of LAN wired transmission paths in a reception buffer, and sequentially multiplexes and transmits the data in a set wireless band in units of packets.

  The radio transmission apparatus according to the present invention has a radio transmission capacity capable of accommodating n PDH data signal sequences. When transmitting a PDH data signal sequence, a PDH data signal sequence input is used as an input, A plurality of stuff synchronization circuits (11a to 1n-a, 11b to 1n-b) that stuff-synchronize with the frequency, receive an output from the stuff synchronization circuit, and multiplex a radio frame multiplexing circuit (4-a, 4-b), a wireless transmission / reception circuit (6-a, 6-b) that modulates the output of the wireless frame multiplexing circuit and transmits it via a wireless transmission path, and a LAN termination circuit (3-a, 3-b) And LAN termination data (3-a, 3) when transmitting LAN reception data input from m LAN wired transmission paths (301-a to 30m-a, 301-b to 30m-b). -B) is the input In accordance with the mapping control signals (7-a, 7-b), the transmission capacity on the wireless frame side for the LAN wired transmission paths (301-a to 30m-a, 301-b to 30m-b) LAN data received from LAN wired transmission paths (301-a to 30m-a, 301-b to 30m-b) is encapsulated in packet units to generate multiplexed data, and the wireless frame is determined. The wireless frame multiplexing circuit (4-a, 4-b) outputs the multiplexed data input from the LAN termination circuit (3-a, 3-b) to the multiplexing circuit (4-a, 4-b). Multiplexed in the radio frame transmission area defined by the mapping control signal (7-a, 7-b), and the PDH data is transmitted in the radio frame transmission area other than the transmission area to which the LAN reception data is assigned. Assigned as the transmission area of the data signal sequence to generate a radio frame data and transmits it to the opposite device through the transmission path from the wireless transceiver circuit (6-a, 6-b). The radio frame is composed of an overhead necessary for radio transmission, an overhead for each channel, and a payload, and the PDH data signal sequence for one signal sequence is accommodated in the payload of one channel.

  In the present invention, after the radio frame synchronization is established in the radio frame extraction circuit (5-a, 5-b) connected to the radio transmission / reception circuit (6-a, 6-b), the mapping control signal (7-a, 7 -B), the channel to which the LAN data on the wireless frame is assigned and the channel to which the PDH data signal sequence is assigned are extracted separately, and the channel data to which the LAN data is assigned is extracted from the LAN termination circuit ( 3-a, 3-b) corresponds to the channel data to which the PDH data signal sequence is assigned among the plurality of destuff circuits (21-a to 2n-a, 21-b to 2n-b). The LAN termination circuit (3-a, 3-b) outputs a packet from the channel data to which the LAN data input from the wireless frame extraction circuit is assigned. Extracts data at positions, and outputs to the LAN wired transmission path. In the above description, the reference numerals in parentheses such as (11a to 1n-a, 11b to 1n-b) of the stuff synchronization circuit (11a to 1n-a, 11b to 1n-b) are for the purpose of understanding the invention. Of course, they are given for reference and are not intended to limit the invention.

  According to another aspect of the present invention, a mapping control signal for a radio frame is input, and LAN data input from a LAN transmission path is mapped to a designated transmission area on the radio frame based on the mapping control signal. And a step of wirelessly transmitting the PDH data signal sequence and the LAN data simultaneously.

  According to the present invention, since the LAN data and the PDH data signal sequence are assigned (assigned) for each channel in the payload of the radio frame, the PDH data signal sequence and the LAN data can be transmitted simultaneously.

  According to the present invention, reception data input from a plurality of LAN wired transmission paths is stored in a reception buffer, and is sequentially transmitted in a packet unit in a set wireless band. Transmission of LAN data on the transmission line side is performed efficiently.

  According to the present invention, since the bandwidth on the wireless transmission path side can be individually set for each LAN wired transmission path in units of channels of the payload of the wireless frame, the bandwidth on the wireless transmission path side for each LAN wired transmission path is guaranteed. Service can be provided.

  In order to describe the present invention in more detail, embodiments will be described below with reference to the accompanying drawings.

  A wireless transmission device according to the best embodiment for carrying out the present invention is a wireless transmission device that stuff-multiplexes a plurality of PDH data signal sequences into a unique wireless frame and transmits the local area network (LAN) interface. It has a termination function and is characterized in that LAN data is multiplexed and transmitted in a payload of a radio frame originally assigned as a PDH data signal sequence transmission area. That is, by directly mapping the LAN data input from the LAN wired transmission path to the designated transmission area on the wireless frame based on the mapping control signal for the wireless frame, the PDH data signal sequence and the LAN data are simultaneously converted to the opposite device. Can be transmitted to.

  In addition, according to the present invention, in the wireless frame, the wireless transmission capacity of the LAN data can be changed in units of the transmission capacity of the PDH data signal sequence. The capacity can be changed.

  FIG. 1 is a diagram showing the configuration of an embodiment of the present invention. In FIG. 1, a wireless transmission device A and a wireless transmission device B have n (n is a natural number) PDH data signal sequence input / output interfaces and m (m is a natural number) LAN wired transmission line interfaces. A transmission apparatus having a wireless transmission capacity capable of accommodating n PDH data signal sequences.

  When transmitting the PDH data signal sequence, in the wireless transmission apparatus A, the PDH data signal sequence inputs 101-a to 10na are stuff-synchronized with the radio frame frequency by the stuff synchronization circuits 11-a to 1n-a, respectively. After being multiplexed into a radio frame by the radio frame multiplexing circuit 4-a, modulated by the radio transmission / reception circuit 6-a and transmitted to the opposite radio transmission apparatus B via the radio transmission path.

  The wireless transmission device B demodulates the data received from the wireless transmission device A by the wireless transmission / reception circuit 6-b, establishes the wireless frame synchronization by the wireless frame extraction circuit 5-b, and then is multiplexed into the wireless frame. The PDH data signal sequence is extracted, the destuff circuit 21-b to 2n-b performs the destuffing process, and the PDH data signal sequence 201-b to 20n-b is output.

  Note that the transmission from the wireless transmission device B to the wireless transmission device A is performed in the same manner as the transmission from the wireless transmission device A to B, and a description thereof will be omitted.

  In the wireless transmission device A, when transmitting LAN reception data input from the LAN wired transmission path, the LAN termination circuit 3-a responds to the LAN wired transmission paths 301-a to 30m-a according to the mapping control signal 7-a. The transmission capacity on the radio frame side is determined for each channel of the radio frame, and the LAN reception data input from the LAN wired transmission paths 301-a to 30m-a is encapsulated for each packet to generate multiplexed data, and wireless Output to the frame multiplexing circuit 4-a.

  The radio frame multiplexing circuit 4-a multiplexes the multiplexed data input from the LAN termination circuit 3-a in the radio frame transmission area defined by the mapping control signal 7-a.

  The wireless frame transmission area other than the transmission area to which the LAN reception data is assigned is assigned as the transmission area of the PDH data signal sequence to generate the wireless frame data, and the wireless transmission device via the wireless transmission / reception circuit 6-a Output to B.

  In radio transmission apparatus B, after radio frame synchronization is established in radio frame extraction circuit 5-b, a channel to which LAN data on the radio frame is assigned by a mapping control signal, and a channel to which a PDH data signal sequence is assigned Are separately extracted, and the channel data to which the LAN data is assigned are output to the LAN termination circuit 3-b and the channel data to which the PDH data signal sequence is assigned to the corresponding destuff circuit.

  The LAN termination circuit 3-b extracts data in units of packets from the channel data to which the LAN data input from the wireless frame extraction circuit 5-b is assigned, and outputs the data to the LAN wired transmission lines 301-b to 30m-b. To do.

  As described above, the wireless transmission device according to the embodiment of the present invention has the PDH data signal sequence interface and the LAN interface, and maps each data in the channel unit of the radio frame, so that the PDH data signal sequence and the LAN are mapped. Data can be transmitted simultaneously.

  Further, since the band on the wireless transmission path side can be individually set for each LAN wired transmission path for each channel of the wireless frame, a service that guarantees the band on the wireless transmission path side for each wired transmission path can be provided. A description will be given below in connection with specific examples.

  FIG. 1 is a diagram showing the configuration of an embodiment of the present invention. In FIG. 1, wireless transmission devices A and B are devices having a wireless transmission capacity capable of transmitting and receiving n PDH data signal sequences.

  The radio transmission apparatus A includes stuff synchronization circuits 11-a to 1n-a, a radio frame multiplexing circuit 4-a, a radio frame extraction circuit 5-a, a radio transmission / reception circuit 6-a, and a destuff circuit 21-a. To 2n-a and a LAN termination circuit 3-a. The wireless transmission device B has the same configuration.

  The transmission side of the wireless transmission device A will be described. The PDH data signal sequence input 101-a is synchronized with the radio frame frequency by the stuff synchronization method in the stuff synchronization circuit 11-a, and is output to the radio frame multiplexing circuit 4-a. Similarly, the PDH data signal sequence 102-a to the PDH data signal sequence 10n-a are also stuff-synchronized with the radio frame frequency by the corresponding stuff synchronization circuits 12-a to 1n-a and the radio frame multiplexing circuit 4-a. Is output.

  The radio frame multiplexing circuit 4-a multiplexes the n stuff-synchronized PDH data signal sequences input from the stuff synchronization circuits 11-a to 1n-a in the radio frame transmission area, and the radio transmission / reception circuit 6 Output to -a. The radio frame is configured to include an overhead necessary for radio transmission, an overhead for each channel, and a payload, and one channel of the PDH data signal sequence is accommodated in the payload of one channel.

  In addition, stuff information and alarm information of the PDH data signal sequence multiplexed in the payload are multiplexed in the channel overhead.

  The LAN termination circuit 3-a stores LAN reception data input from the plurality of LAN wired transmission paths 301-a to 30m-a in a reception buffer (not shown) in units of packets.

  The radio frame multiplexing circuit 4-a determines whether to assign each channel of the radio frame to LAN data or PDH data signal sequence according to the mapping control signal 7-a set by the user or the like, and assigns it as LAN data. The LAN reception data is read from the reception buffer of the LAN termination circuit 3-a at a rate corresponding to the channel to be transmitted in units of packets and multiplexed on the payload of the designated channel. The radio frame multiplexing circuit 4-a accommodates the PDH data signal sequence after the stuff processing input from the stuff synchronization circuit in the channel assigned as the PDH data signal sequence to form a radio frame, and the radio transmission / reception circuit 6- output to a.

  The radio transmission / reception circuit 6-a modulates radio frame data, conveys the radio frame data to a radio frequency, and transmits it to the opposite radio transmission apparatus B.

  Next, the configuration of the receiving side will be described in the wireless transmission device B. Data input from the wireless transmission device A via the wireless transmission path is demodulated by the wireless transmission / reception circuit 6-b, and the wireless frame data is synchronized and output to the wireless frame extraction circuit 5-b.

  The radio frame extraction circuit 5-b extracts the PDH data signal sequence multiplexed by the radio transmission apparatus A from the payload of the radio frame data and outputs it from the destuff circuit 21-b to 2n-b. The destuff circuit 21-b destuffs each PDH data signal sequence extracted by the radio frame extraction circuit 5-b and outputs it as PDH data signal sequence outputs (line data output) 201-b to 20n-b to the outside of the apparatus. Output.

  In the case of a configuration in which LAN data is assigned to a radio frame, a channel assigned as LAN data is extracted in accordance with the mapping control signal 7-b and is output to the LAN termination circuit 3-b.

  The LAN termination circuit 3-b stores the LAN data input from the wireless frame extraction circuit 5-b in a transmission buffer in units of packets and outputs the data to each LAN wired transmission path 301-b to 30m-b.

  Note that the transmission from the wireless transmission device B to A is the same as the transmission from the wireless transmission device A to B, and a description thereof will be omitted.

  FIG. 2 is a diagram showing a main part of the configuration of the LAN termination circuit 3-a of FIG. The LAN termination circuit 3-b of the wireless transmission device B has the same configuration.

  Referring to FIG. 2, LAN reception data input from LAN wired transmission paths 301-a to 30m-a are stored in reception buffers 311 to 31m, respectively.

  The port distribution circuit 8 reads the LAN reception data from the reception buffers 311 to 31m in units of packets, encapsulates them, and sets the transmission capacity on the wireless transmission path side for each LAN wired transmission path according to the mapping control signal 7-a. Multiplex data to payload is generated by specifying in channel unit.

  FIGS. 3A to 3C are diagrams showing a configuration example of the port distribution circuit 8 of FIG. Referring to FIG. 3A, the port distribution circuit 8 collectively outputs LAN reception data 701 to 70m input from a plurality of LAN wired transmission paths and outputs multiplexed data 801.

  Next, referring to FIG. 3B, the port distribution circuit 8 outputs individual multiplexed data 801 to 80m with respect to the reception data 701 to 70m of each LAN wired transmission path.

  Further, referring to FIG. 3C, the port distribution circuit 8 collectively outputs a plurality of pieces of LAN data in a designated combination. In the example shown in FIG. 3C, the two LAN reception data 701 and 702 are combined into one to output the multiplexed data 801, and the plurality of LAN reception data 703 to 70m are combined into one multiplexed data 802. ing.

  FIG. 4 is a diagram showing an example of a frame format according to an embodiment of the present invention.

  The circuit operation of the embodiment of the present invention shown in FIG. 1 will be described. In FIG. 1, wireless transmission devices A and B are devices having a wireless transmission capacity capable of transmitting and receiving n PDH data signal sequences, and wireless frame data is for wireless transmission as shown in FIG. Overhead OHB, overheads OHB1 to OHBn for n channels, and a payload.

  In the overhead OHB for wireless transmission, information necessary for wireless transmission such as frame bits, alarm information, and auxiliary signals is multiplexed. In addition, one channel of the PDH data signal sequence is multiplexed in the payload of one channel, and stuff information and alarm information for the PDH data signal sequence of 1 signal multiplexed in the payload are included in the overhead in units of channels OHB1 to OHBn. Is multiplexed.

  First, a transmission process when all channels of a radio frame are assigned as transmission of a PDH data signal sequence will be described.

  In the wireless transmission apparatus A, n PDH data signal string inputs 101-a to 10n-a input from the outside are stuffed with respect to the radio frame frequency in the connected stuff synchronization circuits 11-a to 1n-a. After being synchronized by the synchronization method and multiplexed in each channel of the radio frame by the radio frame multiplexing circuit 4-a, it is modulated via the radio transmission / reception circuit 6-a and output to the radio transmission path.

  The reception data input from the wireless transmission path in the wireless transmission device B is demodulated via the wireless transmission / reception circuit 6-b and input to the wireless frame extraction circuit 5-b.

  The radio frame extraction circuit 5-b extracts a PDH data signal sequence from each channel of the radio frame data, performs destuffing operations in the corresponding destuff circuits 21-b to 2n-b, and outputs a PDH data signal sequence. Output as 201-b to 20n-b outside the apparatus.

  Next, an operation when LAN reception data input from a LAN wired transmission path is transmitted using a payload of a radio frame channel will be described.

  With reference to FIG. 2, the operation of the transmitting side in the wireless direction of the LAN termination circuit 3-a will be described. The LAN termination circuit 3-a accumulates the reception data input from the LAN wired transmission paths 301-a to 30m-a in the reception buffers 311 to 31m, respectively, and according to the read control signal input to the port distribution circuit 8, The LAN reception data 701 to 70m are output in packet units. The port distribution circuit 8 generates multiplexed data 801-80m for a radio frame in accordance with the input mapping control signal 7-a.

  Next, the configuration and operation of the port distribution circuit 8 will be described with reference to FIG. Referring to FIG. 3A, LAN received data 701 to 70m input from the LAN wired transmission lines 301-a to 30m-a via the reception buffers are encapsulated in units of packets, respectively. Is output as multiple data.

  The data rate of the multiplexed data 801 is changed for each radio frame channel by a mapping control signal 7-a input from the outside, and multiplexed on the payload channel allocated in the radio frame multiplexing circuit 4-a. By accommodating the PDH data signal sequence in the remaining payload channels, the occupation number of the PDH data signal sequence and the transmission capacity of the LAN data can be freely changed in units of channels.

  In addition, since LAN reception data input from a plurality of LAN wired transmission paths is collected and transmitted in one band, the transmission efficiency of the LAN data in the wireless transmission band is increased.

  Referring to FIG. 3B, the LAN received data 701 to 70m input from the LAN wired transmission lines 301-a to 30m-a via the reception buffer are the channels set by the mapping control signal 7-a, respectively. Output at multiple data rates in units.

  For example, in FIG. 4B, the LAN reception data 701 input from the LAN wired transmission path 301-a is assigned the channel 1 band, and the LAN reception data 702 input from the LAN wired transmission path 302-a is Payload channels 2 and 3 are allocated, and the remaining payload channels are allocated as PDH data signal sequences.

  As described above, the mapping control signal 7-a can set an independent wireless band for each LAN wired transmission line, and can guarantee a wireless band corresponding to each LAN wired transmission line. it can.

  Further, referring to FIG. 3 (c), m LAN wired transmission lines 301-a to 30m-a are grouped for each user's network, and multiplexed data is output.

  When a user using a LAN wired transmission path is in the same network, it is possible to increase the use efficiency of the radio band by transmitting the radio frame together in one band. In addition, when the connection destinations of a plurality of LAN wired transmission paths are different networks, by independently allocating the wireless side band in units of networks, it is possible to prevent a decrease in throughput due to the flow of extra data from other networks, It is possible to guarantee the transmission band on the wireless side on a network basis.

  The operational effects of the above-described embodiment of the present invention will be described.

  Since the LAN data and the PDH data signal sequence are assigned for each channel in the payload of the radio frame, the PDH data signal sequence and the LAN data can be transmitted simultaneously.

  Since the band on the wireless transmission path side can be individually set for each LAN wired transmission path in units of channels of the payload of the wireless frame, a service that guarantees the band on the wireless transmission path side for each wired transmission path can be provided.

  Receive data input from multiple LAN wired transmission paths is stored in the reception buffer, and is transmitted in a set wireless band sequentially in packet units so that LAN data is transmitted on the wireless transmission path side. Is done efficiently.

  Next, a second embodiment of the present invention will be described. The second embodiment of the present invention is the same as the above-described embodiment shown in FIG. 1. However, as shown in FIG. 4 (c), the case where LAN received data is assigned to the channel of the radio frame is applicable. By assigning not only the channel payload but also the channel overhead bits as the LAN data area, the transmission capacity of the LAN data can be increased.

  Although the present invention has been described with reference to the above embodiments, the present invention is not limited to the configurations of the above embodiments, and various modifications that can be made by those skilled in the art within the scope of the present invention. Of course, modifications are included.

It is a figure which shows the structure of one Example of this invention. It is a figure which shows the structure of the principal part of the LAN termination circuit in one Example of this invention. (A)-(c) is a figure which shows the structural example of the port allocation circuit of a LAN termination circuit. (A)-(c) is a figure which shows the example of the frame format of the Example of this invention. It is a figure which shows the structure of the prior art (system of patent document 1).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Core transmission line 2 Common part 3 Burst data system line set part 4 Line set part for low order group / high order group of digital hierarchy 5 PC-LAN
6 Low-order / high-order group data system of digital hierarchy 11-a, ... 1n-a, 11-b, ... 1n-b Stuff synchronization circuit 21-a, ... 2n-a, 21-b, ... 2n-b Stuff circuit 3-a, 3-b LAN termination circuit 4-a, 4-b Radio frame multiplexing circuit 5-a, 5-b Radio frame extraction circuit 6-a, 6-b Radio transmission / reception circuit 7-a, 7- b Mapping control signal 8 Port distribution circuit 101-a, ... 10n-a, 101-b, ... 10n-b Line data input 201-a, ... 20n-a, 201-b, ... 20n-b Line data output 301- 30m-a, 301-b, 30m-b LAN wired transmission lines 311, 312, ... 31m Reception buffer 701, 702, ... 70m LAN reception data 801, 802, ... 80m Multiplexed data

Claims (20)

A wireless transmission device that multiplexes and transmits a plurality of line data signal sequences in a wireless frame,
LAN (Local Area Network) interface termination function,
A radio transmission apparatus comprising: means for multiplexing and transmitting LAN data at least in a payload of a radio frame assigned as a transmission area of the line data signal sequence.   The radio transmission apparatus according to claim 1, wherein the line data signal sequence is a PDH (Plesiochronous Digital Hierarchy) data signal sequence.   A mapping control signal for a wireless frame is input, and based on the mapping control signal, LAN data input from a LAN wired transmission path is mapped to a designated transmission area on the wireless frame, so that a PDH data signal sequence and LAN data are mapped. The wireless transmission device according to claim 2, wherein: A plurality of reception buffers for respectively receiving reception data input from a plurality of LAN wired transmission paths;
The wireless transmission apparatus according to claim 1 or 2, further comprising means for sequentially multiplexing and transmitting the set wireless band in units of packets.   The wireless transmission according to any one of claims 1 to 4, wherein a band on a wireless transmission path side can be individually set for a LAN wired transmission path in units of channels of a payload of a wireless frame. apparatus.   The wireless transmission according to claim 1, wherein, when allocating LAN data to a channel of a wireless frame, the payload of the corresponding channel and the overhead bit of the channel can be freely allocated as a data area of the LAN. apparatus. A plurality of PDH (Plesiochronous Digital Hierarchy) data signal sequence inputs, and a plurality of stuff synchronization circuits each stuff-synchronized to a radio frame frequency;
A radio frame multiplexing circuit for receiving an output from the stuff synchronization circuit and multiplexing the radio frame;
A radio transmission / reception circuit that modulates the output of the radio frame multiplexing circuit and transmits it via a radio transmission path;
A LAN termination circuit connected to a plurality of LAN wired transmission lines;
With
When transmitting LAN reception data input from the LAN wired transmission path, the LAN termination circuit determines the transmission capacity on the wireless frame side with respect to the LAN wired transmission path according to the input mapping control signal as a channel unit of the wireless frame. Determined, and encapsulated LAN received data input from the LAN wired transmission path in units of packets to generate multiplexed data and output to the radio frame multiplexing circuit,
The radio frame multiplexing circuit multiplexes multiplexed data input from the LAN termination circuit into a radio frame transmission area defined by the mapping control signal,
Of the wireless frame transmission area, the transmission area other than the transmission area to which the LAN reception data is assigned is assigned as the transmission area of the PDH data signal sequence to generate the wireless frame data, and is transmitted from the wireless transmission / reception circuit to the opposite device via the transmission path. A wireless transmission device characterized by transmitting. A plurality of reception buffers each storing the LAN reception data input from the LAN wired transmission path;
The LAN received data is read out from the receive buffer in packet units, encapsulated, and according to the mapping control signal, the transmission capacity on the wireless transmission line side for each LAN wired transmission line is specified in channel units of the wireless frame, and multiplexed data into the payload A port distribution circuit for generating
The wireless transmission device according to claim 7, further comprising: A radio frame extraction circuit connected to the output of the radio transceiver circuit;
A plurality of destuff circuits that receive the output of the radio frame extraction circuit and are respectively connected to a plurality of PDH data signal sequence outputs;
Further comprising
The wireless transceiver circuit demodulates received data,
The radio frame extraction circuit receives an output from the radio transmission / reception circuit, establishes radio frame synchronization, and then extracts a PDH data signal sequence multiplexed in the radio frame;
8. The radio transmission apparatus according to claim 7, wherein the destuffing circuit performs destuffing processing and outputs a PDH data signal sequence. In the radio frame extraction circuit, after synchronization of the radio frame is established, the mapping control signal separately extracts a channel to which the LAN data on the radio frame is assigned and a channel to which the PDH data signal sequence is assigned,
Outputting the channel data to which the LAN data is assigned to the LAN termination circuit, while outputting the channel data to which the PDH data signal sequence is assigned to the corresponding destuff circuit,
10. The LAN termination circuit extracts data in units of packets from channel data to which LAN data input from the wireless frame extraction circuit is assigned, and outputs the data to the LAN wired transmission path. The wireless transmission device described.   The wireless transmission device according to claim 7 or 8, wherein a plurality of channels of a payload of a wireless frame are allocated as a band on the wireless transmission line side to one LAN wired transmission line.   9. The LAN data is allocated to a channel of a radio frame, and the payload of the corresponding channel and the overhead bit of the channel can be freely allocated as a LAN data area. Wireless transmission equipment.   The radio frame includes an overhead for radio transmission, an overhead for each channel, and a payload, and the PDH data signal sequence is accommodated for one signal sequence in a payload of one channel. Item 15. The wireless transmission device according to any one of Items 2 to 12. When wirelessly transmitting a line data signal sequence and LAN data, a mapping control signal for a wireless frame is input, and based on the mapping control signal, LAN data input from a LAN wired transmission path is assigned to a wireless frame transmission area. Process,
Wirelessly transmitting the LAN data assigned to the transmission area of the wireless frame simultaneously with the line data signal sequence;
A wireless transmission method comprising: In the transmission device, a mapping control signal for a radio frame is input, and on the basis of the mapping control signal, LAN data input from a LAN wired transmission path is mapped to a designated transmission area on the radio frame to generate a line data signal. Wirelessly transmitting a string and LAN data simultaneously;
In the receiving device, after establishing synchronization of the radio frame, a step of separately extracting a channel to which the LAN data on the radio frame is assigned and a channel to which the line data signal sequence is assigned by the mapping control signal;
Outputting the channel data to which the LAN data is assigned to the LAN termination circuit and the channel data to which the line data signal sequence is assigned to the corresponding destuff circuit;
The LAN termination circuit extracts data in units of packets from channel data to which LAN data is allocated, and outputs the data to the LAN wired transmission path;
The destuffing circuit destuffing the line data signal sequence and outputting it to the line data output line;
A wireless transmission method comprising:   16. The method according to claim 14, further comprising a step of storing reception data respectively input from a plurality of LAN wired transmission paths in a reception buffer and sequentially multiplexing and transmitting the data in a set wireless band in units of packets. The wireless transmission method described.   The wireless transmission according to any one of claims 14 to 16, wherein a band on a wireless transmission path side can be individually set in units of a channel of a payload of a wireless frame with respect to a LAN wired transmission path. Method.   17. When assigning LAN data to a channel of a radio frame, the method includes a step of performing control to allocate not only the payload of the corresponding channel but also the overhead bit of the channel as a data area of the LAN. The wireless transmission method according to any one of the above.   The wireless transmission method according to claim 14, wherein the line data signal sequence is a PDH data signal sequence.   The radio frame includes an overhead for radio transmission, an overhead for each channel, and a payload, and the PDH data signal sequence is accommodated for one signal sequence in a payload of one channel. Item 20. The wireless transmission method according to Item 19.

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