JP2826455B2 - Relay operation setting method for multi-way multiplex communication system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention allocates a radio communication channel between a child station or a relay station, which is a lower station, and a parent station, which is a higher station, only when a call is made to the lower station. The present invention relates to a multidirectional multiplex communication system that performs communication control by a demand assignment method, and more particularly to a method of setting an operation of relaying an uplink burst signal from a lower station to an upper station when voice communication and data communication are handled in a mixed manner.

[0002]

2. Description of the Related Art In general, a multi-directional multiplex communication system of this type has a 1: N ratio between one master station and a plurality of slave stations which are geographically separated and scattered around the master station. It is a time division multiplex wireless communication system for performing communication. In this case, depending on the scale of the system, one or more relay stations may be installed, and this relay station also communicates with the master station. In such a multi-way multiplex communication system, transmission of communication information in the downlink direction from the master station to each slave station is performed as follows.
That is, the master station transmits predetermined communication information to each slave station according to the time division multiplexing (TDM) method, and each slave station separates and selects the communication information targeted by the own station.

On the other hand, transmission of communication information in the upward direction from each slave station to the master station is performed as follows. That is, a time division multiple unit in which each slave station transmits a transmission burst signal (a burst signal whose transmission time is intermittent) only within a predetermined transmission time range (hereinafter, wireless time slot) assigned to the own station. The slave station transmits predetermined communication information to the master station by the connection (TDMA) method. Then, the master station separates and extracts communication information from each slave station. Thus, bidirectional communication is performed between the master station and each slave station. When a relay station is provided between the master station and each of the slave stations, the relay station relays the communication information.

FIG. 4 is a block diagram of the above-mentioned relay station for relaying communication information between a master station and each slave station. In the figure, 1 is an antenna in the direction of the master station (upper station), and 2 is an antenna in the direction of the slave station (lower station). The antennas 1 and 2 are connected to receivers 5 and 6 and transmitters 7 and
8 is connected. Reference numeral 9 denotes a time division multiplexed signal processing circuit to which the receivers 5 and 6 and the transmitters 7 and 8 are connected.
It is connected to telephone 11 and data terminal 12 via interface circuit 10. The time division multiplexed signal processing circuit 9 includes a frame synchronization circuit 13, a transmission timing generation circuit 14, an upstream burst signal detection circuit 15, and a selection circuit 1.
6. Insert burst signal detection circuit 17, adder 18, data signal burst relay timing information detection circuit 19, memory 20, station number storage section 2 for storing the station number of this relay station
1, a data signal burst control circuit 22 and an uplink burst relay control circuit 23 are provided.

Next, the relay operation in the multi-way multiplex communication system will be described with reference to FIG. According to the relay station shown in FIG. 4, the frame synchronization circuit 13 obtains a frame synchronization signal dependent on the reception signal from the master station demodulated by the receiver 5, and the transmission timing generation circuit 14 converts this frame synchronization signal. A transmission timing signal is generated as a reference. The data signal burst relay information detection circuit 19
Detects the wireless time slot relay information corresponding to the station number of the relay station from the received signal from the master station, and stores this information in the memory 20.

On the other hand, the upstream burst signal from each slave station, which is the lower station, to the master station is demodulated by the receiver 6 to obtain an upstream relay burst signal S 1, which is guided to the selection circuit 16. Further, the insertion burst signal S2 of the own station corresponding to the telephone set 11 and the data terminal 12 connected to the subscriber line is guided from the interface circuit 10 to the selection circuit 16. In the data signal burst control circuit 22, the memory 20
Based on the wireless time slot relay information extracted from
A fixed relay control signal S5 and a relay prohibition control signal S6 are generated. Here, the generated fixed relay control signal S5 and relay inhibition control signal S6, and the uplink burst signal detection circuit 15
The detection signal S3 indicating the presence of the uplink relay burst signal corresponding to the wireless time slot to be relayed from is calculated in the uplink burst control circuit 23, and the selection circuit 16 is controlled based on the calculation result.

Next, the control situation of the selection circuit 16 will be described in detail. When there is a fixed relay burst at the relay station based on information from the master station, the fixed relay control signal S5 output from the data signal burst control circuit 22 becomes “H” level. Also, since the relay prohibition control signal S6 is also at "H" level, the selection signal to the selection circuit 16 is at "H" level corresponding to the radio time slot. In this case, the uplink relay burst signal S1 is selected. Is done. On the other hand, with respect to the data communication time slot, in a relay station belonging to a different path, the relay prohibition control signal S6 becomes "L" level corresponding to the data communication time slot, and no burst signal is transmitted to the upper station. Is controlled as follows. Further, in the case of a voice communication time slot, the fixed relay control signal S5 is at "L" level and the relay inhibition control signal S6 is at "H" level.
5 is controlled by the output signal S3.

In this way, the relay station can set three types of relay operations for each radio time slot based on information from the master station. That is, the fixed relay as the first relay operation, the relay inhibition as the second relay operation, and the third relay operation based on the detection output of the uplink burst signal from the lower station can be set.

[0009]

Each of the above-mentioned relays of such a relay station operates based on information from a master station, and this information defining the relay operation is transmitted to the master station by an operator. By comparing and setting a route map indicating the configuration with a data communication time slot used in each slave station, the data is output from the master station to each relay station. For this reason, when the connection configuration of the master station, each relay station, and each slave station becomes complicated, there is a problem that a long time is required for setting and an erroneous setting is caused.

Accordingly, an object of the present invention is to accurately and quickly set a relay operation of a relay station.

[0011]

In order to solve such a problem, the present invention comprises a master station as an upper station and a plurality of slave stations and relay stations as lower stations. Multi-directional multiplexing that handles communication control in a demand assignment system that allocates a wireless communication channel between the relevant slave station or relay station and the master station only when a call occurs, and handles voice communication and data communication in a mixed manner. In the communication system, the master station sets each data communication time slot based on the setting information and the stored station number information and route map information of all the slave stations and relay stations when the data communication line is set. For each relay station, the fixed relay mode is used when the route corresponds to the route from the lower station to the upper station, the relay disable mode is used when the route is different, and the lower station is used for the voice communication time slot. Up Above when it detects the burst signal
An operation is performed so as to be in three kinds of relay operation modes of an electric field relay mode for relaying to a local station, and this operation result is transmitted and set as wireless time slot relay setting information from the master station to each relay station. is there. In addition, the station number information is stored in the first storage unit, the route map information is stored in the second storage unit, and the data communication time slot for setting the data communication time slot of the slave station is set. The slot information is stored in a third storage unit, and the radio time slot relay operation setting information for each repeater obtained by calculating each of the stored information is stored in a fourth storage unit. The setting information is transmitted to each relay station via the transmitter.

[0012]

[Operation] When a data communication line is set in the master station,
Based on this setting information and the station number information and route map information of all the slave stations and relay stations stored, the time slot for each data communication is transmitted from the lower station to the upper station for each relay station. The calculation is performed so that the relay operation mode is a fixed relay mode if the route is different, the relay prohibition mode if the route is different, and the electric field relay mode for the voice communication time slot. The calculation result is transmitted to each relay station as wireless time slot relay setting information.
Therefore, since the relay operation of each relay station can be automatically set only by the line setting operation of the operator, the relay operation of each relay station can be set reliably and in a short time.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 2 is a block diagram showing an example of the multi-directional multiplex communication system to which the method for setting a relay operation of the multi-directional multiplex communication system of the present invention is applied. In the figure, B is a master station, T1 and T2 are slave stations, and R1 to R3 are master stations B and T.
DT1, a relay station for relaying communication information between T1, T2
DT2 is a data terminal connected to slave stations T1 and T2. In this example, of the plurality of slave stations, the slave station T1 is wirelessly connected to the master station B via the relay stations R1 and R2, and the slave station T2 is wirelessly connected to the master station B via the relay station R3. Is shown.

FIG. 3 is a diagram showing a configuration of a radio frame used in this multi-directional multiplex communication system.
3A shows a frame configuration in the downlink direction from the master station to each slave station, and FIG. 3B shows an uplink frame configuration from each slave station to the master station. In the figure, F is a frame synchronization signal, C is a control time slot, TS1 to T
Sm indicates each time slot for data communication and voice communication.

FIG. 1A is a block diagram showing a configuration of a master station B for setting a relay operation of the multi-way multiplex communication system. In the figure, the above-mentioned master station B that sets the relay operation of each of the relay stations R1 to R3 includes storage units 101 to 104,
It comprises a computing unit 105, a transmitter 106, a receiver 107, a circulator 108, and an antenna 109. By the way, in the storage unit 101 and the storage unit 102, station number information and route map information described later are registered, respectively. The storage unit 103 stores time slot information for data communication, and the storage unit 104 stores wireless time slot relay operation setting information for each of the relay stations R1 to R3 as shown in FIG. .

Here, in the master station B, station number information indicating the station number of each relay station and each slave station as system data of the multi-way multiplex communication system, and connection between the master station, each relay station and each slave station. When each registration operation of the route map information indicating the route is performed, the station number information and the route map information are stored in the storage unit 101 and the storage unit 102, respectively.
Registered in. In such a situation, if the operator sets the data communication line related to the wireless time slot at the master station B, that is, sets the wireless time slot to which the data communication time slot of the slave station is assigned, The information is stored in the storage unit 103 as communication time slot information, and
Is input to In this case, in the arithmetic unit 105, the time slot information for data communication and the respective storage units 101,
An operation is performed based on the station number information and the route map information stored in each of the relay stations 102 to obtain wireless time slot relay operation information for each relay station.

That is, in the arithmetic unit 105, for each data communication time slot, the relay station corresponding to the route from the lower station (slave station) to the upper station (master station) is fixed relay (first relay). Operation), a relay station having a different route is prohibited from relaying (second relay operation), and a time slot for voice communication is transmitted to an upper station when an uplink burst signal from a lower station is detected. Three types of relay operation modes are obtained for each of the relay stations R1 to R3 so as to perform electric field relay (third relay operation) for relaying. This is transmitted to each of the relay stations R1 to R3 as wireless time slot relay operation information.

That is, the route map registration information shown in FIG.
Is stored in the storage unit 102, and the time slot information for data communication is set such that the data terminal DT1 uses the time slot TS1 and the data terminal DT2 uses the time slot TS2. Once set, the calculation result in the calculator 105 is as shown in FIG.

That is, in this case, since the relay station R1 is connected to the slave stations T1 and T2 via the relay stations R2 and R3, respectively, the time slots TS1 and TS2 are fixed relays, and the other time slots TS3 to TSm Indicates that the relay operation mode for the above-described electric field relay is the relay station R1.
Arithmetic unit 105 as wireless time slot relay operation information of
Obtained from

Also, the relay station R2 is connected to the slave station T1,
Since it is not connected to the slave station 2, the time slot TS1 is fixed relay, the time slot TS2 is relay prohibited,
For the other time slots TS3 to TSm, a relay operation mode for electric field relay is obtained as the wireless time slot relay operation information of the relay station R2. Further, the relay station R3
Is connected to the slave station T2, and is not connected to the slave station 1, so that the time slot TS1 is prohibited from being relayed, the time slot TS2 is fixedly relayed, and the other time slots TS3
As for TSm, a relay operation mode such as electric field relay is obtained as wireless time slot relay operation information of the relay station R3.

The radio time slot relay operation information for each relay station calculated by the arithmetic unit 105 in this way is:
The information is stored in the storage unit 104 and multiplexed by the transmitter 106 into the control time slot C shown in the radio frame configuration diagram of FIG.
9 to each relay station. As a result, when each relay station receives the radio time slot relay operation information transmitted from the master station B, it performs the relay operation according to this information.

As described above, when the operator sets the line for data communication, the master station automatically calculates the relay operation mode of each relay station from the stored station number information and route map information. The relay operation of the station can be set reliably and in a short time. Note that the route map information registered in the storage unit 102 is based on a method in which the operator inputs the station numbers of all the relay stations and the slave stations according to the route map, and the arithmetic unit computes the station number information of the upper and lower relation of each station. There is a method to generate.

[0023]

As described above, according to the present invention, when a data communication line is set in the master station, this setting information, the station number information of all the stored slave stations and relay stations, and the route map are set. Based on the information, for each data communication time slot, a fixed relay mode is used for each relay station when the route corresponds to a route from a lower station to an upper station. For the communication time slot, the calculation is performed so that the three relay operation modes of the electric field relay mode are performed, and the calculation result is transmitted to each relay station as wireless time slot relay setting information.
The relay operation of each relay station can be automatically set only by the line setting operation of the operator, so that the relay operation of each relay station can be set reliably and in a short time.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an apparatus to which a method for setting a relay operation of a multi-way multiplex communication system according to the present invention is applied.

FIG. 2 is a block diagram showing a configuration of the system.

FIG. 3 is a diagram showing a configuration of a frame used in the system.

FIG. 4 is a block diagram showing a configuration of a relay station constituting the system.

[Explanation of symbols]

1, 2, 109 Antenna 3, 4, 108 Circulator 5, 6, 107 Receiver 7, 8, 106 Transmitter 9 Time division multiplex signal processing circuit 13 Frame synchronization circuit 14 Transmission timing generation circuit 15 Up burst signal detection circuit 16 Selection Circuit 17 Insertion burst signal detection circuit 18 Adder 19 Data signal burst relay timing information detection circuit 20 Memory 21 Station number storage unit 22 Data signal burst control circuit 23 Up burst control circuit 101-104 Storage unit 105 Computing unit B Parent station R1- R3 relay station T1, T2 slave station DT1, DT2 data terminal

Claims (2)

(57) [Claims] A master station as an upper station and a plurality of slave stations and relay stations as lower stations are provided, and only when a call is generated in the slave station or the relay station, the corresponding slave station or relay station and the master station are connected to each other. Method of setting relay operation in a multi-way multiplex communication system that performs communication control using a demand assignment method that allocates a wireless communication channel during
In the method , at the master station, data communication time slot information indicating the data communication time slot of the slave station allocated when the data communication line is set up, and station number information of all the slave stations and relay stations stored in advance. And route map information,
For each data communication time slot, use the fixed relay mode if the route corresponds to the lower station to the upper station for each relay station, the relay prohibition mode if the route is different, and the voice communication time slot. On the other hand, when an uplink burst signal from a lower station is detected, calculation is performed so as to be in one of three relay operation modes of an electric field relay mode for relaying to an upper station, and the calculation result is transmitted to each relay station by a radio time slot relay operation. A relay operation setting method for a multi-directional multiplex communication system, wherein the relay station transmits setting burst information and each relay station relays an uplink burst signal from a lower station to an upper station based on the wireless time slot relay operation setting information. 2. The mobile station according to claim 1, wherein the station number information is stored in a first storage unit, and the route map information is stored in a second storage unit. The time slot information for data communication that has been set
And the radio time slot relay operation setting information for each relay station obtained by calculating the stored information.
And transmitting the wireless time slot relay operation setting information to each relay station via a transmitter.