JP2000049675A - Radio line repeating installation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the switching efficiency of slots and to increase the number of repeating lines between a base station and a mobile station at low cost. SOLUTION: This installation is provided with down and up transmission systems 50 and 70 having down and up reception parts 51 and 71 which receive reception slots in frame data between the base station and a repeating station (repeating station and mobile station), down and up I data decoding parts 55 and 75 which decode I data by slots constituting the reception slots, down and up 4-time-slot switching parts 56 and 76 which perform slot switching so that those I data are propagated to respective arbitrary slots of transmit slots in the frame data between the repeating station and mobile station (base station and repeating station), and down and up transmission parts 62 and 82 which transmit the transmit slots to the mobile station 30 and base station 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio line relay device such as a relay station for relaying radio signals between a mobile station and a base station in a TDMA / TDD communication system such as a PHS communication system.

[0002]

2. Description of the Related Art In a PHS communication system adopted as such a TDMA / TDD communication system, for example, a user of a mobile station can perform a communication operation by transmitting and receiving a radio signal between a mobile station and a base station. .

[0003] A radio signal of such a PHS communication system will be described. FIG. 6 is an explanatory diagram showing a signal format of a radio signal of a general PHS communication system.

[0006] The radio signal shown in FIG.
The frame data is wirelessly output as a second cycle, and each frame data includes a reception slot of the first to fourth slots and a first slot.
The fourth to fourth transmission slots are configured in a predetermined arrangement order, and each slot transmits propagation data (I data) such as a communication channel having a cycle of 5 msec or a control channel having a cycle of 100 msec.

[0005] The communication channel propagated in each slot is:
As shown in FIG. 6, the data is composed of a 240-bit array, and data from a ramp to a guard time, which will be described later, is arranged in order. A 4-bit ramp R for notifying the start of the slot data, A 2-bit start symbol SS indicating the head, a 6-bit preamble PR for obtaining timing synchronization of each bit of the slot data, and a 16-bit unique word 16UW for obtaining timing synchronization for detecting I data described later. And 16-bit erroneous detection data (CRC data) for detecting a bit error relating to the data content of the communication channel, and 16-bit for compensating for a delay generated according to a distance difference between the base station and the mobile station. The guard time GT is arranged in order.

[0006] In such a PHS communication system, as shown in FIG.
The communication operation is performed between the base station 102 connected to the DN network 100 by wire and the mobile station 103 wirelessly connected to the base station 102. However, in an urban area where high-rise buildings and the like are arranged, the base station 102 is used. A situation may occur in which the radio wave output of the mobile station 103 becomes too small to reach the mobile station 103.

Therefore, in recent years, in order to secure radio wave output between the base station 102 and the mobile station 103, the base station 102 and the mobile station 103 are connected between the base station 102 and the mobile station 103.
A relay station 104 that relays communication between the mobile station 103 and the mobile station 103 has been devised.

[0008] Now, the relay station 104 of such a PHS communication system will be described. FIG. 8 is a block diagram showing a schematic configuration inside a relay station 104 in a conventional PHS communication system.

[0009] On the other hand, when the relay station 104 receives a reception slot from the base station 102 out of frame data composed of a reception slot and a transmission slot between the base station and the relay station, the relay station 104 In order to propagate the propagation data (I data) for each frame sequentially and to propagate each of the decoded propagation data to a predetermined slot in the transmission slot in the frame data for the relay station and the mobile station, the base station and the relay The reception slot for the station is exchanged with the transmission slot for the relay station and the mobile station, and the propagation data is relayed to the mobile station 103 in the transmission slot for the relay station and the mobile station.

On the other hand, when the relay station 104 receives a reception slot from the mobile station 103 among frame data composed of a reception slot and a transmission slot between the relay station and the mobile station, the relay station 104 In order to sequentially decode the propagation data (I data) for each slot and propagate the decoded propagation data in each of the transmission slots in the frame data for the base station and the relay station,
The reception slot for the relay station and the mobile station are exchanged with the transmission slot for the base station and the relay station, and the propagation data is relayed and transmitted to the base station 102 in the transmission slot for the base station and the relay station. is there. The frame data is transmitted in the order of the receiving slot and the transmitting slot at predetermined intervals (5 msec). The propagation data corresponds to I data which is the data content of the control channel and the communication channel described above.

The relay station 104 alternately temporally performs downlink transmission from the base station 102 to the mobile station 103 and uplink transmission from the mobile station 103 to the base station 102.

The relay station 104 shown in FIG.
Alternatively, a receiving unit 111 that receives a 1.9 GHz wireless signal from the mobile station 103, and demodulates the wireless signal to 384K.
demodulation section 112 for obtaining baseband reception data of bps
And a unique word detecting unit 113 for detecting a unique word included in the received data, and a CRC determining unit 114 for detecting CRC data included in the received data and outputting a control signal based on the determination result of the CRC data
And I data decoding unit 1 that decodes the I data contained in the received data and recognizes the slot number information.
15, a two-timeslot exchange unit 116 for exchanging the reception data into a transmission slot based on the slot number information based on the I-data decoded by the I-data decoding unit 115, and a control from the CRC judgment unit 114. A mute unit 117 for erasing the slot-exchanged I data in response to a signal, an I data creation unit 118 for creating I data for a control channel, and an I data output of the mute unit 117 or the I data creation unit 118 Switching section 119 for switching
A CRC adding section 120 for adding CRC data to the I data from the switching section 119; a unique word adding section 121 for adding a unique word to the I data to which the CRC data has been added; and a unique word adding section. A modulation unit 122 modulates transmission data composed of the I data and obtains a radio signal, and a transmission unit 123 that transmits the radio signal to the base station 102 or the mobile station 103.

The CRC determination unit 114 detects CRC data included in the received data, and if it is determined that there is a bit error (error information) based on the CRC data, the mute unit 117 deletes the I data. It outputs a control signal for activating the operation.

The muffling unit 117 includes the CRC judging unit 1
When the control signal is received from 14, the I data exchanged in the slot by the two time slot exchange unit 116 is erased, and when the control signal from the CRC determination unit 114 is not received, the two time slot exchange unit 116 The slot exchanged I data is transmitted to the switching unit 119 as it is.

The I data decoding unit 115 decodes I data included in the received data and recognizes slot number information included in the I data.
Further, the I data is used for the communication channel to be relayed.
If it is determined that the data is not data, a switching control signal for switching and connecting the switching section 119 to the I data creation section 118 is output.

The relay station 104 relays a communication channel between the base station and the mobile station, and does not relay a control channel between the base station and the mobile station. That is, in the relay station 104, the control channel transmission between the base station and the relay station and the control channel transmission between the relay station and the mobile station are individually executed.

Therefore, the I data creation unit 118
It does not operate when a communication channel is relayed between a base station and a mobile station. However, when a control channel is relayed between a base station and a mobile station, for example, the mobile station is used as a control channel on the relay station 104 side. This is for creating I data for controlling the data 103.

In the two-timeslot exchange unit 116, for example, as shown in FIG. 9, from the base station 102, of the reception slots in the frame data between the base station and the relay station, the communication channel SL1 is used in the second slot. To the relay station 10
When the communication channel SL1 receives the signal, the communication channel SL1 is exchanged for a slot, and the communication channel SL1 is transmitted to the mobile station 103 in the fourth slot among the transmission slots in the frame data for the relay station and the mobile station.

At this time, when the communication channel SL1 is transmitted from the relay station 104 to the mobile station 103 in the fourth slot, the transmission timing is the fourth slot in the transmission slot immediately after the reception slot between the base station and the relay station. Is to be sent.

Conversely, the two time slot exchange units 1
In 16, for example, when the relay station 104 receives the communication channel SL1 in the fourth slot among the reception slots in the frame data for the relay station and the mobile station from the mobile station 103, the communication channel SL1 is exchanged. hand,
Among the transmission slots in the frame data between the base station and the relay station, the communication channel SL1 is set to the base station 1 in the second slot.
02.

At this time, when the communication channel SL1 is transmitted from the relay station 104 to the base station 102 in the second slot, the transmission timing is the second slot in the transmission slot immediately after the reception slot for the relay station-mobile station. Is to be sent.

In this two-timeslot exchange section 116, in addition to the above-mentioned slot exchange from the second slot to the fourth slot, there are three kinds of slot exchanges as follows, and a total of four kinds of slots are exchanged. Slot exchange can be performed.

First, when the relay station 104 receives a communication channel from the base station 102 in the first slot among the receiving slots for the base station and the relay station, the communication channel is transmitted for the relay station to the mobile station. Of the slots, the third slot is exchanged for transmission to the mobile station 103, and the relay station 104 receives a communication channel from the mobile station 103 in the third slot among the reception slots between the relay station and the mobile station. Then, the communication channel is exchanged with the first slot among the transmission slots for use between the base station and the relay station, and transmitted to the base station 102.

When the relay station 104 receives a communication channel from the base station 102 in the third slot among the reception slots for the base station and the relay station, the communication channel is transmitted for the relay station and the mobile station. Among the slots, the first slot is exchanged with the first slot and transmitted to the mobile station 103, and the mobile station 103 transmits the received slot between the relay station and the mobile station.
When the relay station 104 receives the communication channel in the first slot, the base station 10 exchanges this communication channel with the third slot among the transmission slots for use between the base station and the relay station.
2 is transmitted.

When the relay station 104 receives a communication channel from the base station 102 in the fourth slot out of the reception slots for the base station and the relay station, the communication channel is transmitted for the relay station and the mobile station. Of the slots, the second slot is exchanged with the second slot and transmitted to the mobile station 103. From the mobile station 103, of the reception slots between the relay station and the mobile station,
When the relay station 104 receives the communication channel in the second slot, the communication channel is switched to the fourth slot among the transmission slots for the base station and the relay station, and the base station 10
2 is transmitted.

As described above, the two time slot exchange unit 116
In the above, four types of slot exchange can be realized.

Therefore, according to the relay station 104, the relay station 104 is disposed between the base station 102 and the mobile station 103, and performs the relay operation of one line between the base station 102 and the mobile station 103 by four kinds of slot exchange. Therefore, even if the distance between the base station 102 and the mobile station 103 is large, the communication operation between the base station 102 and the mobile station 103 can be ensured via the relay station 104.

[0028]

According to the relay station 104 as such a conventional radio line relay apparatus, the base station 1
02 and the mobile station 103 can perform only one line relay operation, but in recent years, a relay operation of a plurality of lines is required.

Therefore, in such a relay station 104, a plurality of receiving units 111, a transmitting unit 123 and a two time slot exchanging unit 116 are provided one by one to realize a one-line relay operation. When a relay operation for three lines, for example, three lines is realized, the receiving unit 111 and the transmitting unit 12
It is conceivable that a relay operation of three lines is realized by providing three 3 and 2 time slot switching units 116 respectively.

However, according to the relay station 104 that realizes such a three-line relay operation, the receiving unit 111, the transmitting unit 123, and the two time slot switching unit 116 must be added every time the number of lines for the relay operation is increased. However, there is a problem that the cost is very high.

Further, according to the two time slot exchange section 116 of the relay station 104, as shown in FIG. 17, a communication channel is received in a reception slot between the base station and the relay station, and the communication channel is relayed. After the slot is exchanged with the transmission slot for the station and the mobile station, only four types of slot exchange can be performed to transmit the exchanged communication channel in the transmission slot for the relay station and the mobile station. Was very bad.

The present invention has been made in view of the above problems, and an object of the present invention is to increase the number of relay lines between a base station and a mobile station while improving slot exchange efficiency and product cost. An object of the present invention is to provide a wireless line relay device that can be achieved.

[0033]

SUMMARY OF THE INVENTION In order to achieve the above object, a radio line repeater according to the present invention comprises a receiving slot and a transmitting slot which are transmitted in the order of a receiving slot and a transmitting slot at predetermined intervals. Downlink receiving means for receiving, and downlink decoding means for decoding the propagation data of each slot constituting the receiving slot received by the downlink receiving means,
In synchronization with the base station radio signal, any slot in the transmission slot in the mobile station radio signal propagated in the order of the reception slot and the transmission slot, the reception slot decoded by the downlink decoding means Downlink slot exchange means for performing slot exchange of a reception slot of the base station radio signal with a transmission slot of a mobile station radio signal so as to propagate propagation data for each slot, and slot exchange by the downlink slot exchange means. A downlink relay transmission system having a downlink transmission unit for transmitting a mobile station radio signal including the transmitted transmission slot to the mobile station; an uplink reception unit for receiving a reception slot of the mobile station radio signal; Uplink decoding means for decoding the propagation data of each slot constituting the reception slot received by the reception means, and the same as the mobile station radio signal. Of the mobile station radio signal, so that the propagation data for each slot of the reception slot decoded by the uplink decoding unit is transmitted to an arbitrary slot in the transmission slot in the base station radio signal. Uplink slot exchange means for performing slot exchange of a reception slot with a transmission slot of a base station radio signal, and uplink transmission means for transmitting a base station radio signal including a transmission slot whose slot has been exchanged by the uplink slot exchange means to a mobile station. And an upstream relay transmission system having the following.

Therefore, according to the radio line repeater of the present invention, the reception slot of the base station radio signal is received, and each propagation data propagated to this reception slot is transmitted in the transmission slot of the mobile station radio signal. The mobile station transmits a mobile station radio signal including the slot-exchanged transmission slot to the mobile station, and receives a reception slot of the mobile station radio signal. Uplink relay, in which each of the propagation data propagated to the slot is slot-exchanged to an arbitrary slot in the transmission slot of the base station radio signal, and the base station radio signal including the slot-exchanged transmission slot is transmitted to the base station. Since it has a transmission system, it is possible to increase the number of relay lines between the base station and the mobile station while improving slot exchange efficiency and product cost. Can.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A radio line repeater according to a first aspect of the present invention comprises a downlink for receiving a reception slot among base station radio signals propagated in the order of a reception slot and a transmission slot at predetermined intervals. Receiving means, downlink decoding means for decoding propagation data for each slot constituting a reception slot received by the downlink reception means, and a reception slot and a transmission slot in synchronization with the base station radio signal. The base station radio so that the propagation data for each slot of the reception slot decoded by the downlink decoding means is transmitted to an arbitrary slot in the transmission slot in the mobile station radio signal to be propagated. Downlink slot exchange means for slot exchange of a signal reception slot to a mobile station radio signal transmission slot, and slot exchange by the downlink slot exchange means. Downlink transmission system having a downlink transmission unit for transmitting a mobile station radio signal including a transmission slot to the mobile station, an uplink reception unit for receiving a reception slot in the mobile station radio signal, and an uplink reception system. Means for decoding the propagation data for each slot constituting the reception slot received by the means, and an arbitrary slot in the transmission slot in the base station radio signal synchronized with the mobile station radio signal. An uplink slot for exchanging a reception slot of the radio signal for the mobile station with a transmission slot of the radio signal for the base station so as to propagate the propagation data for each slot of the reception slot decoded by the uplink decoding means. Switching means, and uplink transmission means for transmitting a base station radio signal including a transmission slot whose slot has been exchanged by the uplink slot exchange means to the mobile station. And having an uplink relay transmission lines that.

The downlink relay transmission system receives a reception slot in a base station radio signal and transmits propagation data for each slot in the reception slot to an arbitrary position in a transmission slot in the mobile station radio signal. The slot is exchanged into a slot, and this slot corresponds to a part until the slot-exchanged transmission slot is transmitted to a mobile station.For example, when a reception slot in frame data for a base station-relay station is received from a base station. The I data, which is propagation data for each slot in the reception slot, is decoded, and the I data for each slot is propagated to an arbitrary slot in the transmission slot in the frame data for the relay station and the mobile station. As described above, the reception slot for the base station and the relay station is exchanged with the transmission slot for the relay station and the mobile station, and the slot-exchanged transmission slot is exchanged. It corresponds to the portion to be transmitted to the mobile station.

The downlink receiving means is a part for receiving a receiving slot of a base station radio signal propagated from a base station in the order of a receiving slot and a transmitting slot at predetermined intervals, for example, a base station-relay station. It corresponds to a downlink receiving unit that receives a reception slot in the inter-frame data.

The downlink decryption means corresponds to, for example, a downlink I data decryption unit which sequentially decrypts the propagation data of each slot in the reception slot received by the downlink reception means.

[0039] The downlink slot exchange means is operable to transmit the downlink decryption signal to an arbitrary slot in a transmission slot in a mobile station radio signal transmitted in the order of a reception slot and a transmission slot in synchronization with the base station radio signal. Means for switching the reception slot of the radio signal for the base station to the transmission slot of the radio signal for the mobile station so as to propagate the propagation data for each slot of the reception slot decoded by the means. The base station-relay station communication is performed so that the I data propagated to the reception slot in the inter-station frame data is propagated to any of the transmission slots in the relay station-mobile station frame data. This corresponds to a downlink 4 time slot exchange unit that exchanges a reception slot with a transmission slot for use between a relay station and a mobile station.

The downlink transmitting means transmits to the mobile station a mobile station radio signal including the transmission slot whose slot has been exchanged by the downlink slot exchanging means, for example, transmission within frame data for a relay station and a mobile station. It corresponds to a downlink transmission unit that transmits a slot to a mobile station.

The uplink relay transmission system receives a reception slot in a radio signal for a mobile station, and transmits propagation data for each slot in the reception slot to an arbitrary position in a transmission slot in the radio signal for a base station. It is equivalent to a part until a slot is exchanged into a slot and the slot-exchanged transmission slot is transmitted to the base station.For example, when a reception slot in frame data for a relay station-mobile station from a mobile station is received. , I for each slot within this receive slot
The base station receives the slot between the relay station and the mobile station so as to decode the data and propagate the I data for each slot to any of the transmission slots in the frame data for the base station and the relay station. -It corresponds to a portion that exchanges slots with transmission slots for relay stations and transmits the slot-exchanged transmission slots to the base station.

The uplink receiving means is a part for receiving a reception slot of a mobile station radio signal propagated from a mobile station in the order of a reception slot and a transmission slot in synchronization with a base station radio signal. It corresponds to an uplink receiving unit that receives a reception slot in the frame data between the relay station and the mobile station.

The uplink decryption means corresponds to, for example, an uplink I data decryption unit which sequentially decrypts the propagation data for each slot in the reception slot received by the uplink reception means.

[0044] The uplink slot exchanging means is provided for transmitting an arbitrary slot in a transmission slot in a base station radio signal transmitted in the order of a reception slot and a transmission slot in synchronization with the mobile station radio signal. The propagation data propagated to the reception slot of the radio signal for the mobile station is transmitted to the transmission slot of the radio signal for the base station so as to propagate the propagation data for each slot of the reception slot decoded by the uplink decoding means. For example, an up-four time slot exchange unit that exchanges I data propagated to a reception slot in frame data for a relay station and a mobile station to a transmission slot in frame data for a base station and a relay station. It is equivalent.

The uplink transmission means transmits a base station radio signal including the transmission slot whose slot has been exchanged by the uplink slot exchange means to the base station. For example, transmission within frame data for a base station-relay station It corresponds to an uplink transmission unit that transmits a slot to a base station.

Therefore, according to the first aspect of the present invention, a receiving slot of a base station radio signal is received, and each propagation data transmitted to the receiving slot is transmitted to a mobile station radio signal. And a downlink relay transmission system for transmitting a mobile station radio signal including the slot-exchanged transmission slot to the mobile station and a reception slot of the mobile station radio signal. Then, each of the propagation data propagated to the reception slot is slot-exchanged to an arbitrary slot in the transmission slot of the base station radio signal, and the base station radio signal including the slot-exchanged transmission slot is transmitted to the base station. And an uplink relay transmission system for transmitting data between the base station and the mobile station while improving slot exchange efficiency and product cost. It is possible to increase the number of lines.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the downlink slot exchange means relates to propagation data of the slot exchange. The downlink transmission means transmits the mobile station radio signal including the transmission slot to the mobile station at the transmission timing of the transmission slot immediately after the reception slot of the mobile station radio signal corresponding to the reception slot of the base station radio signal, While performing slot exchange from the base station radio signal reception slot to the mobile station radio signal transmission slot, the uplink slot exchange means sets the mobile station radio signal reception slot related to the slot exchange propagation data to the reception slot. The uplink transmitting means sets the transmission slot at the transmission timing of the transmission slot immediately after the reception slot of the corresponding base station radio signal. To transmit wireless signals for base stations including bets to the base station, and executes the slot switching to transmission slots of the radio signal for the base station from the reception slots of the radio signal for the mobile station.

The downlink slot exchange means transmits the downlink slot at the transmission timing of the transmission slot immediately after the reception slot of the mobile station radio signal corresponding to the reception slot of the base station radio signal relating to the propagation data of the slot exchange. A slot exchange is performed from a reception slot of the base station radio signal to a transmission slot of the mobile station radio signal so as to transmit a mobile station radio signal including a slot to the mobile station. At the transmission timing of the transmission slot immediately after the reception slot for the relay station and the mobile station corresponding to the reception slot for the base station and the relay station related to the downlink transmission unit, the downlink-transmitted transmission slot is assigned to each mobile station. To transmit, the base station-
It corresponds to a downlink 4 time slot exchange unit that performs slot exchange from a reception slot between relay stations to a transmission slot between a relay station and a mobile station.

The uplink slot switching means transmits the data at the transmission timing of the transmission slot immediately after the reception slot of the base station radio signal corresponding to the reception slot of the mobile station radio signal related to the propagation data of the slot exchange. A slot exchange is performed from a reception slot of the mobile station radio signal to a transmission slot of the base station radio signal so as to transmit a base station radio signal including a slot to the base station. So that the uplink transmission unit transmits the transmission slot to the base station at the transmission timing of the transmission slot immediately after the reception slot for the base station and the relay station corresponding to the reception slot for the relay station and the mobile station. Uplink 4 for performing slot exchange from a reception slot for a station to a mobile station to a transmission slot for a base station to a relay station Corresponds to the time slot interchange unit.

Therefore, according to the wireless line relay apparatus of the second aspect of the present invention, in addition to the effect of the first aspect, the downlink slot exchange means for the base station relating to the propagation data of this slot exchange. The base station so that the downlink transmitting means transmits the mobile station radio signal including the transmission slot to the mobile station at the transmission timing of the transmission slot immediately after the reception slot of the mobile station radio signal corresponding to the reception slot of the radio signal. A slot exchange is performed from the reception slot of the radio signal to the transmission slot of the radio signal for the mobile station, and the base station corresponding to the reception slot of the radio signal for the mobile station relating to the propagation data of the slot exchange is performed by the uplink slot exchange means. The base station including the transmission slot at the transmission timing of the transmission slot immediately after the reception slot of the station radio signal. To transmit a base station radio signal to the base station radio signal transmission slot from the mobile station radio signal reception slot to the base station radio signal transmission slot. Thus, the number of relay lines between the base station and the mobile station can be increased.

According to a third aspect of the present invention, there is provided a radio line relay apparatus according to the first or second aspect, further comprising a base station and a mobile station. The present invention is applied to a relay station that relays a radio signal between mobile stations.

Therefore, according to the wireless line relay device of the third aspect of the present invention, in addition to the effects of the first or second aspect, the present invention can be applied to a PHS communication system.

According to a fourth aspect of the present invention, in a TDMA communication system comprising a base station and a mobile station, in addition to the configuration of the first or second aspect, The present invention is applied to a relay station that relays a radio signal between mobile stations.

Therefore, according to the radio line relay device of the fourth aspect of the present invention, in addition to the effects of the first or second aspect, the present invention can be applied to a TDMA communication system. (Embodiment) A relay station of a PHS communication system showing an embodiment of a radio line relay apparatus of the present invention will be described below with reference to the drawings. FIG. 1 shows the PHS shown in this embodiment.
FIG. 1 is a block diagram illustrating a schematic configuration of a communication system.

The PHS communication system 1 shown in FIG.
A base station 20 for wired connection to the ISDN network 10 via a DN line 11, and a mobile station 30 for wireless connection to the base station 20
(30a, 30b, 30c) and the relay station 40,
The relay station 40 enables simultaneous relay transmission of radio signals between the base station 20 and a plurality of mobile stations 30, for example, three mobile stations 30a, 30b, and 30c.

FIG. 2 is a block diagram showing a schematic configuration inside relay station 40 of PHS communication system 1 shown in the present embodiment.

The relay station 40 shown in FIG. 2 is a downlink transmission system 5 for relaying and transmitting a radio signal from the base station 20 to the mobile station 30.
0, and an uplink transmission system 70 for relaying and transmitting a radio signal from the mobile station 30 to the base station 20.

The downlink transmission system 50 sets the receiving slot in the base station-relay station frame data to the base station 20.
, The propagation data (I data) for each slot included in the reception slot is sequentially decoded, and the propagation data is propagated in an arbitrary slot in the transmission slot in the frame data for the relay station and the mobile station. For this purpose, the slot exchange is performed from the base station-relay station reception slot to the relay station-mobile station transmission slot, and the propagation data is transmitted in the slot-exchanged relay station-mobile station transmission slot. Is relayed to the mobile station 30.

The upstream transmission system 70 is connected to a relay station-
When a reception slot is received from the mobile station 30 among the frame data for use between the mobile stations, the propagation data (I data) for each slot included in the reception slot is sequentially decoded, and each of the propagation data is transmitted from the base station to the relay station. In order to propagate the signal in an arbitrary slot in the transmission slot in the frame data for the station, the slot exchange is performed from the reception slot for the relay station to the mobile station to the transmission slot for the base station and the relay station. The transmission data is relayed to the base station 20 in the exchanged transmission slot between the base station and the relay station.

The downlink transmission system 50 includes a downlink receiver 51 for receiving a 1.9 GHz radio signal from the base station 20.
A downlink demodulation unit 52 for demodulating this radio signal to obtain 384 Kbps baseband reception data, a downlink unique word detection unit 53 for detecting a unique word included in the reception data, and a CRC included in the reception data.
Data is detected, and based on the CRC data, it is determined whether or not the received data has a bit error (error information). When it is determined that the received data has a bit error, a control signal described later is transmitted. Downlink CRC judging section 54 to output
The downlink I data decoding unit 5 that decodes the I data included in the received data and recognizes the slot number information.
5 and the I data decoded by the downlink I data decoding unit 55, based on the slot number information, to determine the reception slot in the frame data for the base station and the relay station as the frame data for the relay station and the mobile station. A downlink 4 time slot exchange unit 56 for exchanging slots with a transmission slot, a downlink I data creation unit 57 for creating I data for a control channel between the relay station and the mobile station, and a downlink 4 time slot exchange unit A down switching unit 58 for switching the I data output of the 56 or down I data creation unit 57, a down adaptive CRC adding unit 59 for adding CRC data to the I data from the down switching unit 58, and the CRC data added. Downward unique word adding unit 6 for adding a unique word to I data
0 and a down-modulation unit 6 which modulates transmission data composed of I data to which the unique word is added to obtain a radio signal.
1 and a downlink transmission unit 62 that relays the radio signal to the mobile station 30.

The downlink I data decoding unit 55 decodes the I data included in the received data and obtains the slot number information included in the I data. When the slot number information is transmitted to the up-link 4 time slot exchange section 76, which will be described later, and it is determined that the I data is not the I data for the communication channel to be relayed, the downlink switching section 58 is sent to the downlink I data section. It outputs a down-switching control signal for switching connection to the creating unit 57 side.

The downlink 4 time slot exchange unit 56
On the basis of the slot number information from the downlink I data decoding unit 55, the reception slot between the base station and the relay station that has propagated the communication channel from the base station 20 is changed to the transmission slot between the relay station and the mobile station. The communication channel is exchanged, and the communication channel is transmitted to the mobile station 30 by propagating the communication channel to the slot-exchanged transmission slot between the relay station and the mobile station.

The downlink CRC adaptation adding section 59 is provided in FIG.
As shown in FIG. 4A, CRC data indicating the presence or absence of an error is added to the I data (FIG.
Downlink CRC adding section 59a to be added as shown in (b)
And only the CRC data included in the I data is
As shown in (c), the downstream CRC inverting section 59b that inverts and outputs the data, and the output data of the downstream CRC inverting section 59b or the output data of the downstream CRC adding section 59a are used as control signals of the downstream CRC determining section 54. And a down-link CRC switching section 59c for switching and outputting in response.

The down-link CRC switching section 59c switches and connects to the down-link CRC inversion section 59b according to a control signal from the down-link CRC determination section 54, and outputs I data to which inverted CRC data is added. .

The upstream transmission system 70 includes an upstream receiving section 71 for receiving a 1.9 GHz radio signal from the mobile station 30.
An uplink demodulator 72 that demodulates the radio signal to obtain 384 Kbps baseband reception data, an uplink unique word detector 73 that detects a unique word included in the reception data, and a CRC included in the reception data.
Data is detected, and based on the CRC data, it is determined whether or not the received data has a bit error (error information). When it is determined that the received data has a bit error,
An uplink CRC determination unit 74 that outputs a control signal described later;
An upstream I data decryption unit 75 for decrypting the I data included in the received data, and the I data decrypted by the upstream I data decryption unit 75, based on the slot number information from the downstream I data decryption unit 55, Uplink 4 time slot exchange section 76 for slot exchange of the reception slot for relay station-mobile station to transmission slot for base station-relay station, and uplink I data creation section 7 for creating I data for control channel
7 and the upstream 4 time slot exchange unit 76 or upstream I
An uplink switching section 78 for switching I data output of the data creation section 77, an uplink adaptive CRC adding section 79 for adding CRC data to I data as transmission data from the uplink switching section 78, and the CRC data is added. Upward unique word adding unit 80 for adding a unique word to I data
And an uplink modulator 81 that modulates transmission data composed of I data to which the unique word is added to obtain a radio signal.
And an uplink transmission unit 82 for relaying the radio signal to the mobile station 30.

The upstream I data decoding unit 75 decodes the I data included in the received data. The I data for the communication channel to which the I data is to be relayed is used.
If it is determined that it is not the
It outputs an upstream switching control signal for switching connection to the data generating unit 77 side.

The upstream 4 time slot exchange unit 76
Based on the slot number information from the downlink I data decoding unit 55, the receiving slot for the relay station and the mobile station that has propagated the communication channel from the mobile station 30 is exchanged with the transmitting slot for the base station and the relay station. Thus, the communication channel can be transmitted to the base station 20 by propagating the communication channel to the slot-exchanged transmission slot.

The uplink CRC adaptation unit 79 is provided with
As shown in (b), an uplink CRC adding section 79a for adding CRC data indicating the presence or absence of an error to the I data from the uplink switching section 78, and an uplink CRC for inverting and outputting only the CRC data included in the I data. An inverting section 79b and the output data of the up-link CRC inverting section 79b or the up-link CRC.
An upstream CRC switching section 79c for switching and outputting the output data of the C adding section 79a in accordance with the control signal of the upstream CRC determining section 74.

The upstream CRC switching section 79c switches and connects to the upstream CRC inverting section 79b according to the control signal from the upstream CRC determining section 74, and outputs I data to which inverted CRC data is added. .

Now, the operation of such a relay station 40 will be described. FIG. 5 is a timing chart simply showing the processing operation of the relay station 40 for exchanging time slots for the plurality of mobile stations 30a, 30b, and 30c according to the present embodiment.

As shown in FIG. 5, in the relay station 40, as a reception slot of the frame data F1 for use between the base station and the relay station, for example, the control channel C is used in the first slot, and the first mobile station is used in the second slot. It is assumed that a communication channel SL1 with the mobile station 30a, a communication channel SL2 with the second mobile station 30b in the third slot, and a communication channel SL3 with the third mobile station 30c in the fourth slot.

In the relay station 40, as a transmission slot of the frame data F2 between the relay station and the mobile station, for example, a communication channel SL1 with the first mobile station 30a in the first slot and a second transmission slot in the second slot. The communication channel SL2 with the mobile station 30b and the communication channel SL3 with the third mobile station 30c in the third slot are propagated.

That is, in the relay station 40 shown in FIG. 5, the reception slot in the base station-relay station frame data F1 for the downlink transmission of the base station-relay station-mobile station is used for the relay station-mobile station. Is exchanged with the transmission slot in the frame data F2, and the reception slot in the frame data F2 between the relay station and the mobile station in the uplink transmission of the mobile station-relay station-base station is changed to the frame for the base station-relay station The slot is exchanged with the transmission slot in the data F1. The frame data F1 for the base station and the relay station and the frame data F2 for the relay station and the mobile station are 5 msec in the order of the first to fourth slot reception slots and the first to fourth slot transmission slots. It is assumed that periodic frame data is formed, and the frame data is sequentially transmitted.

When transmitting a radio signal from the base station 20 to the mobile station 30 via the relay station 40, as shown in FIG. 5, the relay station 40 sets the reception slot of the frame data F1 between the base station and the relay station. Receive. The reception slot of the frame data F1 for use between the base station and the relay station is the first slot.
The slot is the control channel C, the second slot is the communication channel SL1 with the first mobile station 30a, the third slot is the communication channel SL2 with the second mobile station 30b, and the fourth slot is the communication channel SL3 with the third mobile station 30c. Are respectively propagated.

Next, the relay station 40 communicates with the base station 20.
When the receiving slot in the base station-relay station frame data F1 is received from the base station and the relay station, the downlink 4 time slot exchanging section 56 described above converts the receiving slot into the base station-relay station frame data F1. The transmission data for the relay station and the mobile station are transmitted to the reception slot for the base station and the relay station so that the propagation data for each slot is propagated to an arbitrary slot in the transmission slot for the relay station and the mobile station. Replace the slot with a slot. That is, in the downlink four time slot exchange unit 56, the reception slot for the base station and the relay station is set to the communication channel SL1 with the first mobile station 30a in the first slot and the second mobile station 30b in the second slot. Communication channel SL2 with the third mobile station 30 in the third slot.
The slot is exchanged with a transmission slot between the relay station and the mobile station, which is constituted by the communication channel SL3 with the mobile station c.

Further, the transmission slot after the slot exchange is transmitted to the downlink switching section 58, the downlink adaptive CRC adding section 5,
9, downlink unique word adding section 60 and downlink modulation section 61
Is transmitted from the downlink transmission unit 62 to each mobile station 30. In the downlink four time slot exchange unit 56 of the relay station 40, the relay station minus the slot exchanged
As shown in FIG. 5, the transmission slot for the mobile station can be transmitted from the downlink transmission unit 62 to each mobile station 30 at the transmission timing of the transmission slot immediately after the reception slot in the frame data F1 between the base station and the relay station. So, base station-
The slot exchange is performed from the reception slot of the frame data F1 between the relay stations to the transmission slot of the frame data F2 between the relay station and the mobile station.

When transmitting a radio signal from the mobile station 30 to the base station 20 via the relay station 40, as shown in FIG. 5, the relay station 40 transmits from the mobile stations 30a, 30b, 30c each slot. The receiving slot in the frame data F2 for the relay station-mobile station having the communication channels SL1, SL2 and SL3 is received. As described above, the reception slot of the frame data F2 for use between the relay station and the base station is, as described above, the communication channel SL1 with the first mobile station 30a in the first slot and the second mobile station 30b in the second slot. And the communication channel SL3 with the third mobile station 30c in the third slot, respectively.

When the relay station 40 receives the reception slot of the frame data F2 between the relay station and the mobile station, the above-described uplink four time slot exchange unit 76 converts the reception slot into the frame data F2 between the relay station and the mobile station. The transmission slot between the relay station and the mobile station is transmitted from the base station to the base station so that the propagation data for each slot in the reception slot is propagated to an arbitrary slot within the transmission slot for the base station and the relay station.
The slot is switched to a transmission slot for use between relay stations. That is, in this uplink four time slot exchange unit 76,
The receiving slot for the relay station-mobile station is defined as a control channel C in a first slot and a first mobile station 30a in a second slot.
Communication channel SL1 with the second mobile station 3 in the third slot
In the fourth slot, the base station exchanges a slot with a base station-relay station transmission slot formed by the communication channel SL3 with the third mobile station 30c in the fourth slot.

Further, the transmission slot whose slot has been exchanged is transmitted to the uplink switching section 78, the uplink adaptive CRC adding section 7
9. Uplink unique word adding section 80 and uplink modulation section 81
Is transmitted from the upstream transmission unit 82 to the base station 20. In the uplink 4 time slot exchange section 76 of the relay station 40, the slot-exchanged transmission slots for use between the base station and the relay station are set as shown in FIG.
From the reception slot of the relay station-to-mobile station frame data F2, the base station is transmitted from the uplink transmission section 82 to the base station 20 at the transmission timing of the transmission slot immediately after the reception slot in the mobile station frame data F2. −
This is for executing the slot exchange of the inter-relay station frame data F1 to the transmission slot.

According to relay station 40 shown in the present embodiment,
The reception slot of the base station-relay station frame data F1 from the base station 20 is received, and each I data transmitted to this reception slot is transmitted in the transmission slot of the relay station-mobile station frame data F2. The reception slots for the base station and the relay station are exchanged with the transmission slots for the relay station and the mobile station so that the transmission slots are propagated to the arbitrary slots of the mobile stations 3, respectively.
0, and the reception slot of the frame data F2 for the relay station-mobile station from each mobile station 30 is received, and each I data propagated to this reception slot is received by the base station-relay. The reception slot between the relay station and the mobile station is exchanged with the transmission slot for the base station and the relay station so that the transmission slot propagates to an arbitrary slot in the transmission slot of the inter-station frame data F1. Since the upstream transmission system 70 for transmitting the exchanged transmission slot to the base station 20 is provided, the number of relay lines between the base station 20 and the mobile station 30 can be increased while improving the slot exchange efficiency and the product cost. Can be achieved.

Further, according to relay station 40 shown in the present embodiment, downlink 4 time slot exchange section 56 receives base station-relay station frame data F1 related to the I data of the slot exchange. At the transmission timing of the transmission slot immediately after the reception slot in the relay station-mobile station frame data F2 corresponding to
In order to transmit the slot-exchanged transmission slot to each mobile station 30, a slot exchange from the base station-relay station reception slot to a relay station-mobile station transmission slot is performed, and 4 time slot exchange unit 7
At 6, the relay station relating to the I data of the slot exchange
The uplink transmitting unit 82 transmits the transmission slot to the base station 20 at the transmission timing of the transmission slot immediately after the reception slot in the base station-relay station frame data F1 corresponding to the reception slot in the mobile station frame data F2. As described above, since the slot exchange is performed from the relay station-mobile station reception slot to the base station-relay station transmission slot, the slot exchange efficiency can be further improved. Thus, the number of relay lines between the base station 20 and the mobile station 30 can be increased.

Next, the operation of downlink adaptive CRC adding section 59 will be described.

As shown in FIG. 3 (a), the downlink adaptive CRC adding section 59 adds CRC data indicating the presence or absence of an error to the I data from the downlink switching section 59c by the downlink CRC adding section 59a. The data is input to one of the downstream CRC inverting section 59b and the downstream CRC switching section 59c.

The downlink CRC inverting section 59b inverts all the bit data of the CRC data added to the I data, and outputs the I data added with the inverted data to the downlink CR.
It is supplied to the other input of the C switching unit 59c.

The downlink CRC switching section 59c selects I data which is output data of the downstream CRC inverting section 59b according to the control signal from the downlink CRC determining section 54, and converts the I data to the downlink unique word adding section. 60.

Therefore, the downlink adaptive CRC shown in FIG.
According to the adding unit 59, when detecting an error of the downlink frame data, the downlink CRC adding unit 59a inverts the CRC data added to the I data by the downlink CRC inverting unit 59b, and adds the inverted CRC data to the I-data. Data
Since it is relayed to the mobile station 30 as it is,
When an error occurs in the received wireless signal, the receiving terminal that receives the relayed wireless signal can reliably recognize that the error has occurred, and a conventional muffling unit and the like are arranged. CR with complicated circuit configuration
By eliminating the need for disposing the C error processing circuit on the relay station 40 side, the circuit configuration can be simplified and the cost can be reduced.

Next, the operation of uplink adaptive CRC adding section 79 will be described.

As shown in FIG. 3 (b), the uplink adaptive CRC adding section 79 adds CRC data indicating the presence or absence of an error to the I data from the uplink switching section 79c in the uplink CRC adding section 79a. The data is input to one of the uplink CRC inversion section 79b and the uplink CRC switching section 79c.

The upstream CRC inverting section 79b inverts all the bit data of the CRC data added to the I data, and outputs the I data added with the inverted data to the upstream CR.
It is supplied to the other input of the C switching section 79c.

The upstream CRC switching section 79c selects I data which is output data of the upstream CRC inverting section 79b according to the control signal from the upstream CRC determining section 74, and transfers the I data to the upstream unique word adding section. 80.

Therefore, the uplink adaptive CRC shown in FIG.
According to the adding unit 79, upon detecting an error in the uplink frame data, the uplink CRC adding unit 79a inverts the CRC data added to the I data by the uplink CRC inverting unit 79b, and adds the inverted CRC data to the I-data. Data
Since it is relayed to the base station 20 as it is,
When an error occurs in the received wireless signal, the receiving terminal that receives the relayed wireless signal can reliably recognize that the error has occurred, and a conventional muffling unit and the like are arranged. CR with complicated circuit configuration
Since it is not necessary to arrange the C error processing circuit on the relay station 40 side, the circuit configuration can be simplified and the cost can be reduced.

Also, in the above embodiment, as shown in FIG. 5, a receiving slot for a base station and a relay station (a control channel in the first slot, and a communication channel S in the second slot).
L1, a communication channel SL2 in the third slot, and a communication channel SL3 in the fourth slot). A transmission slot between the relay station and the mobile station (the communication channel SL1 in the first slot, the communication channel SL2 in the second slot, and the communication channel SL2 in the third slot). The example in which the slot is exchanged with the communication channel SL3) has been described. For example, the reception slot for the base station and the relay station is the communication channel SL3 at the first slot, the communication channel SL1 at the second slot, and the communication channel SL3 at the third slot. SL2,
The fourth slot is a control channel, and the receiving slot is a communication channel SL1 in the first slot, a communication channel SL2 in the second slot, and a communication channel S2 in the third slot.
It is also possible to exchange the slot to the L3 transmission slot, and it is needless to say that various slot exchange variations can be obtained.

In the above embodiment, the relay station 40 having the four time slot exchange function for exchanging slots of three communication channels by providing the downlink transmission system 50 and the uplink transmission system 70 will be described. However, in the relay station 40, for example, two downlink transmission systems 5
0 and two uplink transmission systems 70 to provide a seven time slot exchange function for exchanging slots of seven communication channels, for example, three downlink transmission systems 50 and three uplink transmission systems 70 Even if it is provided with an 11 time slot exchange function for exchanging slots of 11 communication channels by providing the same, not only the number of relay lines is increased, but also the same effect as the above 4 time slot exchange function is obtained. It goes without saying that you can get it.

In the above embodiment, the data structure of the frame data for the relay station-mobile station or for the base station-relay station is transmitted in the order of the receiving slot and the transmitting slot at predetermined intervals. Although the configuration is adopted, it goes without saying that the same effect can be obtained even if the configuration is such that transmission is performed at predetermined intervals in the order of the transmission slot and the reception slot.

[0095]

According to the first aspect of the present invention, a reception slot of a base station radio signal is received, and each propagation path transmitted to the reception slot is received. A downlink relay transmission system that exchanges data with an arbitrary slot in a transmission slot of a mobile station radio signal and transmits a mobile station radio signal including the slot-exchanged transmission slot to the mobile station; A reception slot of a radio signal is received, and each propagation data transmitted to the reception slot is exchanged with an arbitrary slot in a transmission slot of a radio signal for a base station. An upstream relay transmission system for transmitting station radio signals to the base station is provided, so that the base station and the base station can be improved while improving slot exchange efficiency and product cost. It is possible to increase the number of trunk lines between mobile stations.

[0096] According to the second aspect of the present invention, in addition to the effect of the first aspect, in addition to the effect of the first aspect, the downlink slot exchange means for the base station relating to the propagation data of this slot exchange. The base station so that the downlink transmitting means transmits the mobile station radio signal including the transmission slot to the mobile station at the transmission timing of the transmission slot immediately after the reception slot of the mobile station radio signal corresponding to the reception slot of the radio signal. A slot exchange is performed from the reception slot of the radio signal to the transmission slot of the radio signal for the mobile station, and the base station corresponding to the reception slot of the radio signal for the mobile station relating to the propagation data of the slot exchange is performed by the uplink slot exchange means. The base station including the transmission slot at the transmission timing of the transmission slot immediately after the reception slot of the station radio signal. Since the slot exchange is performed from the reception slot of the mobile station radio signal to the transmission slot of the base station radio signal so as to transmit the radio signal to the base station, the slot exchange efficiency is further improved. Therefore, the number of relay lines between the base station and the mobile station can be increased.

According to the wireless line relay device of the third aspect of the present invention, in addition to the effects of the first or second aspect, the present invention can be applied to a PHS communication system.

[0098] According to the wireless line relay device of the fourth aspect of the present invention, in addition to the effects of the first or second aspect, the present invention can be applied to a TDMA communication system.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a PHS communication system shown in an embodiment of a radio line relay apparatus of the present invention.

FIG. 2 is a block diagram showing a schematic configuration inside a relay station of the PHS communication system shown in the present embodiment;

FIG. 3 is a block diagram showing a schematic configuration inside an adaptive CRC adding unit of the relay station shown in this embodiment. A) A block diagram showing a schematic configuration inside a downlink adaptive CRC adding unit. B) A schematic diagram inside an uplink adaptive CRC adding unit. Block diagram showing configuration

FIG. 4 is an explanatory diagram showing data contents of input / output signals of a downlink adaptive CRC adding unit shown in FIG. 3 a) Data contents of an input signal of a downlink adaptive CRC adding unit (downlink CRC adding unit) b) A downlink CRC inverting unit Data content of input signal c) Data content of output signal of adaptive CRC addition unit (downstream CRC inversion unit)

FIG. 5 is a timing chart showing transmission / reception timing of a transmission / reception slot of a relay station between a mobile station and a base station according to the present embodiment.

FIG. 6 is an explanatory diagram showing a signal format of a radio signal (communication channel) used in a general PHS communication system.

FIG. 7 is a block diagram showing a schematic configuration of a PHS communication system to which a conventional radio line relay device is applied.

FIG. 8 is a block diagram showing a schematic configuration inside a relay station used in a conventional PHS communication system.

FIG. 9 is a timing chart showing transmission / reception timing of a transmission / reception slot of a relay station between a conventional mobile station and a base station.

[Explanation of symbols]

Reference Signs List 40 relay station (wireless line relay device) 50 downlink transmission system (downlink transmission system) 51 downlink reception unit (downlink reception means) 55 downlink I data decoding unit (downlink decoding means) 56 downlink 4 time slot exchange unit (downlink slot exchange) Means) 62 Downlink transmission unit (downlink transmission unit) 70 Uplink transmission system (uplink relay transmission system) 71 Uplink reception unit (uplink reception unit) 75 Uplink I data decoding unit (uplink decoding unit) 76 Uplink 4 time slot exchange unit (uplink) Slot exchange means) 82 upstream transmission unit (uplink transmission means)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seiji Shinohara 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Inside Matsushita Communication Industrial Co., Ltd. No.3-1, Matsushita Communication Industrial Co., Ltd. (72) Inventor Akihiko Soda 1-2-1, Shibaura, Minato-ku, Tokyo NTT Central Personal Communication Network Co., Ltd. (72) Inventor Hiroyuki Nose 1-2-1 Shibaura, Minato-ku, Tokyo NTT Central Personal Communication Network Co., Ltd. (72) Inventor Shiro Takenouchi 2-1-1 Shibaura, Minato-ku, Tokyo NT・ T-Chuo Personal Communication Network Co., Ltd. (72) Inventor Naoto Shimada NTT Central Personal Communication Network Co. Companies in the F-term (reference) 5K067 AA11 BB03 BB04 BB08 CC04 DD11 EE02 EE06 EE10 EE72 5K069 CA03 CB04 CB08 DB22 FA15 FD17 5K072 AA15 BB13 BB25 BB27 CC15 DD16 DD17 EE04 EE23 FF25 FF26 GG14 GG26

Claims (4)

[Claims] 1. A base station radio signal propagated in the order of a receiving slot and a transmitting slot at predetermined intervals, a downlink receiving means for receiving a receiving slot, and a receiving slot received by the downlink receiving means. Downlink decoding means for decoding the propagation data for each slot to configure, and in synchronization with the base station radio signal, the transmission slot in the mobile station radio signal propagated in the order of the reception slot and the transmission slot. The reception slot of the base station radio signal is exchanged with the transmission slot of the mobile station radio signal so that the propagation data for each slot of the reception slot decoded by the downlink decoding means is propagated to an arbitrary slot. Transmitting a mobile station radio signal including a transmission slot whose slot has been exchanged by the downlink slot exchanging means to the mobile station. A downlink relay transmission system having a downlink transmission means, an uplink reception means for receiving a reception slot in the mobile station radio signal, and a slot for each reception slot received by the uplink reception means. Uplink decoding means for decoding propagation data, and each slot of a reception slot decoded by the uplink decoding means in an arbitrary slot in a transmission slot in a base station radio signal synchronized with the mobile station radio signal. Uplink slot exchange means for exchanging the reception slot of the mobile station radio signal with the transmission slot of the base station radio signal so that each propagation data is propagated, and An uplink transmission system having an uplink transmission means for transmitting a base station radio signal including a transmission slot to a mobile station. Line relay device. 2. The downlink transmission means according to claim 1, wherein said downlink slot exchange means comprises: a downlink transmission means at a transmission timing of a transmission slot immediately after a reception slot of a mobile station radio signal corresponding to a reception slot of a base station radio signal relating to propagation data of said slot exchange. Performs a slot exchange from a reception slot of the base station radio signal to a transmission slot of the mobile station radio signal so that the mobile station transmits a mobile station radio signal including a transmission slot to the mobile station. Means for transmitting the uplink signal to the base station including the transmission slot at the transmission timing of the transmission slot immediately after the reception slot of the radio signal for the base station corresponding to the reception slot of the radio signal for the mobile station relating to the propagation data of the slot exchange. A base station radio signal from a reception slot of the mobile station radio signal so as to transmit a signal to the base station. 2. The wireless line relay device according to claim 1, wherein a slot exchange for a signal transmission slot is performed. 3. A PHS communication system comprising a base station and a mobile station, wherein the PHS communication system is applied to a relay station that relays and transmits a radio signal between the base station and the mobile station. Wireless line relay device. 4. A TDMA communication system comprising a base station and a mobile station, wherein the TDMA communication system is applied to a relay station for relaying and transmitting a radio signal between the base station and the mobile station. Wireless line relay device.