KR100442134B1 - Repeater of base station using the beacon signal - Google Patents

Abstract

The present invention relates to a base station relay apparatus using a beacon signal for improving handoff between a 2.5G base station and a 2G base station.

The present invention uses a 2: 1 splitter between a beacon equipment and a transmission signal combiner in a base station where a beacon transceiver and a time compensator are installed at the same time, so that the beacon signal is output without going through a time correction device to a 2G system, and thus 2G in a 2.5G system. Characterized in that the arc cutting does not occur when moving to the system,

According to the present invention, there is an effect that the call completion rate does not occur when moving from the 2.5G system to the 2G system to always complete the call completion rate.

Description

Base station relay device using beacon signal {Repeater of base station using the beacon signal}

The present invention relates to a base station relay apparatus using a beacon signal, and more particularly, to a base station relay apparatus using a beacon signal for improving the handoff between the 2.5G base station and the 2G base station.

In the general CDMA system, the number of FAs between base stations varies even in the downtown and the outskirts or the same downtown area due to the expansion of FAs due to the increase in subscribers. Therefore, in order to induce a smooth handoff between a multi-frequency base station, an outside small FA base station and a downtown small FA base station, a pilot signal without a traffic channel is used as a pilot beacon method.

Also, recently, the second generation mobile communication system based on IS-95 (hereinafter referred to as "2G system") and the second generation mobile communication system based on CDMA 2000 1X (hereinafter referred to as "2.5G system") We are using this beacon signal for hard handoff.

That is, the beacon signal is used to allow the terminal to continuously perform a call without a call disconnection when the 2.5G terminal moves from the 2.5G service area to the 2G service area. Normally, 2G base station uses beacon signal of 873.33MHz in 111 channel, and the time compensator used in the repeater is equipped with a filter that passes only a specific frequency. Therefore, the band currently serving at 011 uses 893.33 MHz.

1 is an exemplary configuration diagram of a base station relay apparatus using a conventional beacon signal.

As shown in FIG. 1, the configuration includes a beacon transceiver 10, a transmission signal combiner 20, a coupler 30, a repeater 40, a time corrector 50, and a low noise amplifier 60.

The beacon transceiver 10 generates a signal of 873.33MHz, which is channelley 111, as a pilot, that is, a beacon signal used in a 2.5G system, and transmits the signal to the transmission signal combiner 20. The transmission signal combiner 20 combines the beacon signals received from the beacon transceiver 10 and transmits them to the coupler 30. At this time, the coupler 30 transmits the received beacon signal to the repeater 30 through 10 dB attenuation, that is, the attenuated beacon signal, that is, 873.33 MHz is transmitted to the time corrector 50.

Here, the time corrector 50 is provided with a band pass filter therein so as not to pass the input 873.33MHz signal. That is, the filter of the time corrector 50 passes only frequencies of 874-880 MHz and 890-894 MHz and removes the remaining filters.

As shown in FIG. 1, the beacon frequency is not outputted by the time compensator's filter at the base station where the 111 channel beacon transceiver and the time compensator are simultaneously installed in the 2G base station. There was a problem that occurred.

Accordingly, the present invention has been made to solve the above-described problems, the beacon signal is transmitted to the 2G system using a 2: 1 splitter between the beacon equipment and the transmission signal combiner in the base station where the beacon transceiver and the time compensator are installed at the same time. It is an object of the present invention to provide a base station relay apparatus using a beacon signal for outputting without going through the time correction device so that call truncation does not occur when moving from a 2.5G system to a 2G system.

1 is a configuration example of a base station relay apparatus using a conventional beacon signal.

Figure 2 is a block diagram of an embodiment of a base station relay apparatus using a beacon signal in accordance with the present invention.

※ Explanation of code for main part of drawing

100: beacon transceiver 110: 2: 1 splitter

120: transmission signal combiner 130: first coupler

135: attenuator 140: time corrector

150: second coupler 160: low noise amplifier

170: repeater

The present invention for achieving the above object, the base station relay apparatus using a beacon (Beacon) signal, Beacon transmission and reception means for generating and transmitting beacon signals to be used in 2.5G system and 2G system; Beacon signal distribution means for receiving the beacon signal transmitted from the beacon transmission and reception means for distribution to the first and second beacon signals; 2.5G relay processing means for signal processing and delivering the first beacon signal distributed by the beacon signal distribution means to a repeater; And 2G transmission processing means for signal processing and delivering the second beacon signal distributed by the distribution means to the 2G system.

Hereinafter, a preferred embodiment of a base station relay apparatus using a beacon signal according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a block diagram of an embodiment of a base station relay apparatus using a beacon signal according to the present invention.

As shown in FIG. 2, the configuration includes a beacon transceiver 100, a 2: 1 divider 110, a transmission signal combiner 120, a first coupler 130, a time corrector 140, and a second coupler ( 150, low noise amplifier 160, and repeater 170.

The beacon transceiver 100 generates 873.33 MHz of a channel 111 as a pilot, i.e., a beacon signal used in 2.5G and 2G systems, and transmits the signal to the 2: 1 splitter 110. The 2: 1 splitter 110 distributes the beacon signals received from the beacon transceiver 100 to the transmission signal combiner 120 and the second coupler 150, respectively.

Here, the transmission signal combiner 120 combines the beacon signal received from the 2: 1 splitter 100 and transfers the beacon signal to the first coupler 130. In this case, the first coupler 130 attenuates the received beacon signal by 10 dB through the attenuator 135 to the repeater 170 and transmits the beacon signal that is not passed through the attenuator 135, that is, a frequency of 873.33 MHz to the time corrector ( 140).

Here, the time corrector 140 has a band pass filter therein with a delay of a predetermined time signal, thereby preventing the input 873.33 MHz signal from passing. That is, the filter of the time corrector 140 passes only frequencies of 874-880 MHz and 890-894 MHz and removes the remaining frequencies. Therefore, the time corrector 140 transmits 2G frequencies of 874-880MHz and 890-894MHz to the second coupler 150.

On the other hand, the second coupler 150 has a built-in attenuator 155 in the front end, 2: 2 splitter 110 receives the 2.5G and 2G beacon signals and general signals distributed after 10dB attenuation.

In this case, the second coupler 150 sums the 2G beacon signal input from the time corrector 140 and the signal input from the 10 dB attenuated 2: 1 divider 110 and adds the summed beacon signal to the low noise amplifier 160. To pass). Accordingly, the low noise amplifier 160 low noise amplifies the input beacon signal and radiates it to the 2G system side through the antenna.

Therefore, the beacon transceiver 100 2: 1 splitter 110, the transmission signal combiner 120, the first coupler 130, the repeater 170, both 2G and 2.5G signals are present, the time corrector 140 There is only 2G signal, and call disconnect does not occur when reconnecting from 2.5G system to 2G system with 2.5G relay via beacon signal.

As mentioned above, preferred embodiments of the present invention are disclosed for the purpose of illustration, and those skilled in the art can improve and change various other embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. , Replacement or addition would be possible.

The base station relay apparatus using the beacon signal made as described above uses a 2: 1 splitter between the beacon equipment and the transmission signal combiner in the base station where the beacon transceiver and the time corrector are installed at the same time without the beacon signal passing through the time correction apparatus in the 2G system. It is a useful invention that can make the call completion rate always because the call disconnection does not occur when moving from 2.5G system to 2G system by outputting.

Claims (4)

In the base station relay apparatus using the distribution of beacon signals, Beacon transmission and reception means for generating and transmitting beacon signals for use in a 2.5 generation mobile communication system (hereinafter referred to as a "2.5G system") and a second generation mobile communication system (hereinafter referred to as a "2G system"); Beacon signal distribution means for receiving the beacon signal transmitted from the beacon transmitting and receiving means for distributing the first beacon signal and the second beacon signal; 2.5G relay processing means for signal-processing and transmitting the first beacon signal distributed by the beacon signal distribution means to a repeater; And 2G transmission processing means for signal-processing and delivering a second beacon signal distributed by the beacon signal distribution means to a 2G system Base station relay apparatus using a beacon signal distribution comprising a. The method of claim 1, The 2.5G relay processing means may include: transmission signal combining means for combining the first beacon signal distributed by the beacon signal distribution means; And And a first coupler means for attenuating and transmitting the beacon signal coupled by the transmission signal coupling means to a repeater. The method of claim 2, The 2G transmission processing means includes time correction means for detecting only the 2G beacon signal by time correcting the beacon signal coupled by the first coupler means; Second coupler means for attenuating the beacon signal detected by the beacon signal distribution means and for combining the attenuated beacon signal and the 2G beacon signal detected by the time correction means; And And a low noise amplifying means for low amplifying and transferring the beacon signal coupled by the second coupler means to the antenna. The method according to any one of claims 1 to 3, The beacon signal base station relay apparatus using a beacon signal distribution, characterized in that the pilot signal of 873.33MHz.