JPH02200031A - Multi-directional multiplex communication equipment - Google Patents

Abstract

PURPOSE:To improve the using efficiency of a frame by dividing ascending frames and descending frames into even-number frames and odd-number frames, allocating an initial connecting channel to the one frames, allocating phase regulating channel to the other frames, and executing the initial connection and phase regulation. CONSTITUTION:The ascending frames and descending frames are divided into the even-number frames and odd-number frames, the initial connecting channel is allocated to the one frames, and the phase regulating channel is allocated to the other frames. A first multiplexing means 15 multiplexes even/odd-number patterns according to the even number and odd number of the descending frame, multiplexes initial connecting position information to the initial connecting channel, and multiplexes phase difference information to the phase regulating channel. A second multiplexing means 28 multiplexes initial connecting and position regulating burst based on the even/odd-number patterns of the descending frame. Respective slave stations separate the initial connecting position information and phase difference information from the descending frame based on the even/odd-number patterns, and add them to a processing means. Thus the using efficiency of the frame can be improved.

Description

[Detailed description of the invention] [Industrial application field] INDUSTRIAL APPLICATION This invention is utilized for the multidirectional multiplex communication apparatus of wireless communication.

〔overview〕

The present invention provides a multidirectional multiplex communication device in which uplink frames and downlink frames are divided into even-numbered frames and odd-numbered frames, and initial connection and phase adjustment are performed by assigning an initial connection channel to one and a phase adjustment channel to the other. This improves frame usage efficiency.

[Conventional technology]

Conventionally, multidirectional multiplex communication devices have an initial connection channel (hereinafter referred to as ACQ, CH) and a phase adjustment channel (hereinafter referred to as ACQ, CH).
Hereinafter referred to as LMT CH. ) were placed in the same frame.

[Problem that the invention seeks to solve]

However, in such a conventional multi-directional multiplex communication device, since the ACQ CH and LMTCH are included in the same frame, there is a drawback that the frame usage efficiency is poor.

The present invention solves the above-mentioned drawbacks, and aims to provide a multidirectional multiplex communication device that uses frames efficiently.

[Means for Solving the Problems] The present invention includes a master station and one or more slave stations connected to the master station via a wireless line, and the master station transmits a frame synchronization pattern downstream. each slave station includes a second multiplexing means for multiplexing bursts for initial connection and phase adjustment into an uplink frame based on the frame synchronization pattern; The first multiplexing means includes means for multiplexing the initial connection position information and the phase difference information on the downlink frame based on the two bursts, and each of the slave stations respectively performs the initial connection and phase difference information based on the two bursts. In a multidirectional multiplex communication device including processing means for performing adjustment processing, uplink frames and downlink frames are divided into even-numbered frames and odd-numbered frames, and an initial connection channel is assigned to one, and a phase adjustment channel is assigned to the other. The first multiplexing means includes means for multiplexing the even-odd pattern onto the downlink frame, and means for multiplexing the two pieces of information onto the two channels, respectively, and the second multiplexing means multiplexes the even-odd pattern into the downlink frame. and means for multiplexing the two bursts onto the two channels based on the above, and each of the slave stations separates the two pieces of information from the downlink frame based on the even-odd pattern and provides the separation to the processing means. It is characterized by including means.

[Effect]

When dividing uplink frames and downlink frames into even-numbered frames and odd-numbered frames, an initial connection channel is assigned to one, and a phase adjustment channel is assigned to the other. The first multiplexing means multiplexes even-odd patterns corresponding to even-numbered and odd-numbered downlink frames, multiplexes initial connection position information onto an initial connection channel, and multiplexes phase difference information onto a phase adjustment channel. The second multiplexing means multiplexes bursts for initial connection and position adjustment based on the even-odd pattern of the downlink frame. Each slave station separates initial connection position information and phase difference information from the downlink frame based on its even-odd pattern and provides it to the processing means. The above operations can improve frame usage efficiency.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. 1st
The figure is a block diagram of a multidirectional multiplex communication device according to an embodiment of the present invention. In FIG. 1, the multidirectional multiplex communication device includes a master station 10 and a slave station 20 connected to the master station 10 via a wireless line, and the master station 10 multiplexes a frame synchronization pattern onto a downstream frame. As a first multiplexing means, a frame synchronization pattern generation circuit 11, a multiplexing circuit 15, and a multiplexing circuit 1 are used.
5 and a modulation/demodulation circuit 16 that manually outputs the output downlink frame l of No. 5 and sends it to the slave station 20 via an antenna.

The slave station 20 also includes a modulation/demodulation circuit 21 that receives the downlink frame of the master station 10 via an antenna and outputs the downlink frame 3.
, a frame synchronization circuit 22 that outputs a frame synchronization pulse 4 based on the downlink frame 3, and an initial connection burst (hereinafter referred to as ACQ burst) and a phase adjustment burst (hereinafter referred to as LM) based on the frame synchronization pulse 4.
It's called T-burst. ) as a second multiplexing means for multiplexing the uplink frame 6 into the uplink frame, it includes an ACQ burst generation circuit 26, an LMT burst generation circuit 27, and a multiplexing circuit 28 that provides the uplink frame 6 to the modulation/demodulation circuit 21.

Further, the multiplexing circuit 15 includes means for multiplexing initial connection position information (hereinafter referred to as ACQ data) and phase difference information (hereinafter referred to as LMT data) into the downlink frame 1 based on the above two bursts.

Furthermore, the slave station 20 includes a portion of the ACQ data separation processing circuit 26 and a portion of the LMT data separation processing circuit 27 as processing means for performing initial connection and phase adjustment processing based on the above two pieces of information.

Here, the feature of the present invention is that uplink frames and downlink frames are divided into even-numbered frames and odd-numbered frames, and ACQ CH is assigned to one and LMT CH is assigned to the other, and the first multiplexing means is An even-odd pattern generation circuit 12 that generates an even-odd pattern 2, a multiplexing circuit 15 as a means for multiplexing the even-odd pattern 2 onto a downlink frame, and a downlink frame of a modulation/demodulation circuit 16 as a means for multiplexing the above two pieces of information onto an ACQ CH and LMTCH, respectively. An ACQ burst detection circuit 13 detects an ACQ burst based on an even-odd pattern 2 and outputs ACQ data, an LMT burst detection circuit 14 and a multiplex circuit 15 detect an LMT burst and output LMT data.
including.

The slave station 20 also includes an even-odd pattern separation circuit 23 that separates even-odd pulses 5 from the downlink frame 3 based on the frame synchronization pulse 4.

Further, the ACQ burst generation circuit 26 and the LMT burst generation circuit 27 each generate an A
The slave station 20 further includes means for supplying the CQ burst and the LMT burst to the multiplexing circuit 28, and the slave station 20 separates the ACQ data and the LMT data from the downlink frame based on the even-odd pulse 5 and supplies the ACQ data to the processing means. It includes a part of the separation processing circuit 24 and a part of the LMT data separation processing circuit 25.

In this embodiment, there is one slave station, but there may be more than one slave station.

The operation of the multidirectional multiplex communication device having such a configuration will be explained. FIG. 2 is a time chart showing the operation of signals in each part of the multidirectional multiplex communication device of the present invention. The signals shown in FIG. 2 correspond to the timings T1 to T7 of the signals output from each circuit shown in FIG. The even-odd pattern generated by the even-odd pattern generation circuit 12, 3 is the downlink frame demodulated by the modulation/demodulation circuit 21 of the slave station 20, and 4 is the frame generated from the frame synchronization pattern (EP pattern) detected by the frame synchronization circuit 22. Synchronizing pulses 5 are even-odd pulses generated from the even-odd patterns separated by the even-odd pattern separation circuit 23; 6 is the upstream frame modulated by the multiplexing circuit 28; and 7 is the upstream frame demodulated by the modulation/demodulation circuit 21.

1 and 2, first, in the master station 10, a frame synchronization pattern indicating the beginning of the downlink frame 1 is generated by the frame synchronization pattern generation circuit 11 to the slave station 20, and an even-odd pattern indicating the evenness of the frame is generated. A pattern is generated by an even-odd pattern generation circuit 12. Multiplex circuit 1 at timing T1
5 multiplexes the frame synchronization pattern and even/odd punctuation onto the downlink frame 1 and transmits it to the slave station 20. The modulation/demodulation circuit 21 of the slave station 20 receives the downlink frame 3 at timing T3, and from this baseband signal, the frame synchronization circuit 22
Frame synchronization pulse 4 is generated at timing T4, and even-odd pattern separation circuit 23 generates even-odd pulse 5 at timing T5.

Therefore, in slave station 20, when performing initial connection processing according to frame synchronization pulse 4 and even-odd pulse 5, ACQ burst generation circuit 26 is operated, and when performing phase adjustment processing, LMT burst generation circuit 27 is operated, and timing At T6, the multiplexing circuit 28 multiplexes the ACQ pattern into each even-numbered frame of the upstream frame 6, and multiplexes the LMT pattern into the odd-numbered frame. The modulation/demodulation circuit 28 transmits the ACQ burst and the LMT burst to the master station 1.
Send to 0.

In the master station 10, the modulation/demodulation circuit 16 receives the uplink frame 6 at timing T7, and based on the even-odd pattern generated at timing T2, the ACQ burst detection circuit 13 operates when it is an even-numbered frame, and the obtained ACQ The multiplexing circuit 15 multiplexes the data onto the downlink frame 1 at timing T1,
Further, in the case of an odd-numbered frame, the LMT burst detection circuit 14 operates, and the multiplexing circuit 15 multiplexes the obtained LMT data into the downlink frame 1 at timing T1, and the modulation/demodulation circuit 16 transmits it to the slave station 20.

Therefore, the downlink frame l in which ACQ data and LMT data are multiplexed is transmitted to the modulation/demodulation circuit 21 at timing T3.
is received, and based on this baseband signal, the frame synchronization circuit 22 generates frame synchronization pattern 4 at timing T4.
is generated, and the even-odd pulse 5 is generated by the even-odd pattern separation circuit 23 at timing T5. Based on these pulses, when the received downlink frame 3 is an even-numbered frame, the ACQ data separation processing circuit 24 operates to perform initial connection processing, and when it is an odd-numbered frame, the LMT data separation processing circuit 25 operates. The initial connection process and the phase adjustment process can be performed alternately depending on the even and odd numbered frames.

〔Effect of the invention〕

As explained above, the present invention has an excellent effect of making effective use of frames.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a multidirectional multiplex communication device according to an embodiment of the present invention. FIG. 2 is a time chart showing the operation of signals in each part of the multidirectional multiplex communication device of the present invention. 1.3...Downward frame, 2...Even-odd pattern, 4.
...Frame synchronization pulse, 5...Even-odd pulse, 6.7
...Uplink frame, 11...Frame synchronization pattern generation circuit, 12...Even-odd pattern generation circuit, 13...A
CQ burst detection circuit, 14... LMT burst detection circuit, 15.28... Multiplex circuit, 16.21... Modulation/demodulation circuit, 22... Frame synchronization circuit, 23... Even-odd pattern separation circuit, 24 ...ACQ data separation processing circuit, 25...LMT data separation processing circuit, 26...
ACQ burst generation circuit, 27...LMT burst generation circuit, T1 to T7...timing.

Claims (1)

[Claims] 1. Comprising a master station and one or more slave stations connected to the master station via a wireless link, the master station has a first base station that multiplexes a frame synchronization pattern onto a downstream frame. Each of the slave stations includes a second multiplexing means for multiplexing bursts for initial connection and phase adjustment into upstream frames based on the frame synchronization pattern, and the first multiplexing means , including means for multiplexing initial connection position information and phase difference information into a downlink frame based on the two bursts, and each of the slave stations performs initial connection and phase adjustment processing based on the two pieces of information. In the multidirectional multiplex communication device including means, the uplink frame and the downlink frame are divided into even-numbered frames and odd-numbered frames, an initial connection channel is assigned to one, and a phase adjustment channel is assigned to the other, and the above-mentioned first The multiplexing means includes means for multiplexing the even-odd pattern onto the downlink frame, and means for multiplexing the two pieces of information onto the two channels, respectively, and the second multiplexing means multiplexes the two pieces of information based on the even-odd pattern. Each of the slave stations includes means for multiplexing the burst onto the two channels, and each slave station includes separating means for separating the two pieces of information from the downlink frame based on the even-odd pattern and providing the separated information to the processing means. A multidirectional multiplex communication device.