CN105992217A - Method and device for controlling time-division duplex repeater, and time-division duplex repeater - Google Patents

Abstract

The present invention provides a control method and device for a time-division duplex repeater. The method includes: determining the frequency band that can be synchronized with the base station and the uplink and downlink time slots corresponding to the frequency band, and synchronizing with the base station Select the frequency band with the best signal quality from the frequency bands; in the uplink or downlink time slot, receive the signal of the corresponding time slot, and process the signal in the channel corresponding to the frequency band with the best signal quality; send the processed signal to go out. The solution of the present invention selects the frequency band with the best signal quality for signal transmission by switching and selecting multiple frequency bands. Compared with the prior art, it makes up for the deficiency of only supporting one frequency band among the multiple frequency bands.

Description

Control method and device of time-division duplex repeater and time-division duplex repeater

technical field

The invention relates to the technical field of mobile communication, in particular to a control method and a device for a time-division duplex repeater and a time-division duplex repeater.

Background technique

The pace of mobile communication development is accelerating, and the number of mobile communication users is also increasing rapidly. At the same time, with people's excessive worries about radiation and the increasing difficulty of property coordination, construction costs are increasing, making the construction of mobile communication base stations more and more difficult, and it is almost impossible to achieve seamless and continuous coverage of the network purely relying on base station equipment , so in this context the researchers proposed a repeater solution.

The repeater is located in the coverage edge area of the base station, extending to the coverage of the base station, and the composition of the repeater includes two sets of transceiver links. Its working principle is: downlink, the repeater receives the wireless signal of the base station, filters and amplifies After forwarding to the terminal; uplink, the repeater receives the wireless signal of the terminal, filters and amplifies it and forwards it to the base station.

Wherein, as shown in FIG. 1 , it is a basic architectural solution of a repeater in the prior art, and the repeater includes: a return antenna, an access antenna, a low noise amplifier (low noise amplifier, LNA), a gain module (Gain ), band-pass filter (band-pass filter, BPF), mixer (Mixer), power amplifier (Power Amplifier, PA), analog-to-digital converter (Analog to Digital Converter, ADC), digital-to-analog converter (Digital to Analog Converter, DAC) and programmable control unit (Field-Programmable Gate Array, FPGA) and other devices. Depending on the duplex mode, the antenna is followed by a switch or a duplexer.

The specific working process of the repeater is as follows: when downlinking, the wireless signal from the base station enters the Switch/Duplexer through the return antenna, then passes through LNA, Gain and other devices, enters the FPGA through the ADC, and the processed signal is converted by DAC. Finally, it is transmitted to cover the terminal through the PA and the antenna of the access terminal; during uplink, the wireless signal from the terminal enters the Switch/filter through the antenna of the access terminal, and then enters the FPGA through the ADC through LNA, Gain and other devices, and the processed signal passes through DAC digital-to-analog conversion, and finally transmitted to the base station through PA, return antenna, etc.

However, for the repeater in the prior art as shown in Figure 1, due to the frequency characteristics of its constituent devices, a single device can only work in one of the frequency bands, so it is necessary to obtain the frequency band information in advance when deploying the equipment and choose the right equipment.

However, with the development of mobile communication, the available spectrum resources are decreasing day by day. Compared with the frequency division duplex (FDD) system, the time division duplex (TDD) system does not require symmetrical spectrum resources, and the TDD system can be easily distributed to scattered spectrum resources. Therefore, TDD systems generally have multiple working frequency bands. Therefore, the system application of the TDD system is gradually widespread. However, the repeater products of the current solution can only cover one of the multiple frequency bands for the TDD system, which brings a lot of inconvenience to mobile communications.

Contents of the invention

The technical problem to be solved by the present invention is to provide a control method and device for a time-division duplex repeater and a time-division duplex repeater, which can select frequency bands and work in the frequency band with the best signal quality, making up for existing solutions The defect that it cannot support multiple frequency bands at the same time.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

According to one aspect of the present invention, a control method of a time division duplex repeater is provided, the control method comprising:

Determining a frequency band that can be synchronized with the base station and an uplink and downlink time slot corresponding to the frequency band, and selecting a frequency band with the best signal quality from the frequency bands that can be synchronized with the base station;

In the uplink and downlink time slots, receiving a signal of a corresponding time slot, and processing the signal in a channel corresponding to the frequency band with the best signal quality;

Send the processed signal.

Wherein, the step of determining the frequency band that can be synchronized with the base station and the uplink and downlink time slots corresponding to the frequency band, and selecting the frequency band with the best signal quality from the frequency bands that can be synchronized with the base station is specifically:

Opening the nth channel, and judging whether the nth channel can be synchronized with the base station, where n is a positive integer;

If it is judged within the preset time that the nth channel can be synchronized with the base station, then the nth channel is synchronized with the base station, and the signal quality of the frequency band corresponding to the channel and the frequency band are recorded Corresponding uplink and downlink time slots, and open the n+1th channel;

If it is judged within the preset time that the nth channel cannot be synchronized with the base station, then turn on the n+1th channel;

When all the channels are turned on, the frequency band with the best signal quality is selected from the recorded signal qualities of the frequency bands.

Wherein, when the current time arrives at the uplink time slot, in the uplink and downlink time slots, the signal of the corresponding time slot is received, and the signal is processed in the channel corresponding to the frequency band with the best signal quality The specific steps are:

In the uplink time slot, receive an uplink signal sent by the user terminal;

The uplink signal is processed in the uplink channel corresponding to the frequency band with the best signal quality.

Wherein, when the current time reaches the uplink time slot, the step of sending the processed signal is specifically:

Send the processed uplink signal to the base station.

Wherein, when the current time reaches the downlink time slot, the step of receiving the signal of the corresponding time slot in the uplink and downlink time slot, and processing the signal in the channel corresponding to the frequency band with the best signal quality is specific for:

In the downlink time slot, receiving a downlink signal sent by the base station;

The downlink signal is processed in the downlink channel corresponding to the frequency band with the best signal quality.

Wherein, when the current time reaches the downlink time slot, the step of sending the processed signal is specifically:

Send the processed signal to the client.

Wherein, the step of processing the uplink signal in the uplink channel corresponding to the frequency band with the best signal quality is specifically:

Opening the entrance of the uplink channel corresponding to the frequency band with the best signal quality;

performing a first filtering process on the uplink signal;

Processing the uplink signal filtered for the first time by a transceiver unit;

performing power amplification on the uplink signal processed by the transceiver unit;

performing a third filtering process on the uplink signal after power amplification;

Open the outlet of the uplink channel corresponding to the frequency band with the best signal quality.

Wherein, the step of processing the downlink signal in the downlink channel corresponding to the frequency band with the best signal quality is specifically:

Opening the entrance of the downlink channel corresponding to the frequency band with the best signal quality;

performing a first filtering process on the downlink signal;

Processing the downlink signal after the first filtering through the transceiver unit;

performing power amplification on the downlink signal processed by the transceiver unit;

performing a third filtering process on the downlink signal after power amplification;

Open the outlet of the downlink channel corresponding to the frequency band with the best signal quality.

According to another aspect of the present invention, a control device for a time-division duplex repeater is also provided, and the control device includes:

Control the synchronization module, used to determine the frequency band that can be synchronized with the base station and the uplink and downlink time slots corresponding to the frequency band, and select the frequency band with the best signal quality from the frequency bands that can be synchronized with the base station;

A processing module, configured to receive signals of corresponding time slots in the uplink and downlink time slots, and process the signals in the channel corresponding to the frequency band with the best signal quality;

A sending module, configured to send the processed signal.

Wherein, the control synchronization module is further used for:

Opening the nth channel, and judging whether the nth channel can be synchronized with the base station, where n is a positive integer;

If it is judged within the preset time that the nth channel can be synchronized with the base station, then the nth channel is synchronized with the base station, and the signal quality of the frequency band corresponding to the channel and the frequency band are recorded Corresponding uplink and downlink time slots, and open the n+1th channel;

If it is judged within the preset time that the nth channel cannot be synchronized with the base station, then turn on the n+1th channel;

When all the channels are turned on, the frequency band with the best signal quality is selected from the recorded signal qualities of the frequency bands.

Wherein, the processing module includes:

an uplink receiving unit, configured to receive an uplink signal sent by the user terminal in the uplink time slot;

The uplink processing unit is configured to process the uplink signal in the uplink channel corresponding to the frequency band with the best signal quality.

Wherein, the sending module includes:

an uplink sending unit, configured to send the processed uplink signal to the base station.

Wherein, the processing module includes:

a downlink receiving unit, configured to receive a downlink signal sent by the base station in the downlink time slot;

The downlink processing unit is configured to process the downlink signal in the downlink channel corresponding to the frequency band with the best signal quality.

Wherein, the sending module includes:

a downlink sending unit, configured to send the processed downlink signal to the user end.

Wherein, the uplink processing unit is further used for:

Opening the entrance of the uplink channel corresponding to the frequency band with the best signal quality;

performing a first filtering process on the uplink signal;

Processing the uplink signal filtered for the first time by a transceiver unit;

performing power amplification on the uplink signal processed by the transceiver unit;

performing a third filtering process on the uplink signal after power amplification;

Open the outlet of the uplink channel corresponding to the frequency band with the best signal quality.

Wherein, the downlink processing unit is further used for:

Opening the entrance of the downlink channel corresponding to the frequency band with the best signal quality;

performing a first filtering process on the downlink signal;

Processing the downlink signal after the first filtering through the transceiver unit;

performing power amplification on the downlink signal processed by the transceiver unit;

performing a third filtering process on the downlink signal after power amplification;

Open the outlet of the downlink channel corresponding to the frequency band with the best signal quality.

According to another aspect of the present invention, a time-division duplex repeater is also provided, including the control device for the above-mentioned time-division duplex repeater.

According to another aspect of the present invention, a time division duplex repeater is also provided, including:

return antenna, control unit and access antenna;

A plurality of signal processing channels, and any signal processing channel includes an uplink and a downlink, and the uplink is provided with a first filter, a first power amplifier and a second filter, and the downlink The link is provided with a third filter, a second power amplifier and a fourth filter;

A first switching module, connected to the control unit, for connecting multiple signal processing channels to the return antenna;

a transceiver unit, connected to the control unit and to the plurality of signal processing channels;

A second switching module, connected to the control unit, for connecting the multiple signal processing channels to the access antenna;

Wherein, the control unit determines the frequency band that can be synchronized with the base station and the uplink and downlink time slots corresponding to the frequency band, and selects the frequency band with the best signal quality from the frequency bands that can be synchronized with the base station; during the uplink and downlink receive the signal of the corresponding time slot through the return antenna or the access antenna, and process the signal in the signal processing channel corresponding to the frequency band with the best signal quality; through the access antenna Or the return antenna sends out the processed signal.

Wherein, the uplink and the corresponding downlink share a filter.

Wherein, the multiple uplinks of the multiple signal processing channels share the uplink transceiver channel of the transceiver unit, and the multiple downlinks of the multiple signal processing channels share the downlink transceiver channel of the transceiver unit.

Wherein, multiple uplinks of the multiple signal processing channels share one power amplifier, and multiple downlinks of the multiple signal processing channels share another power amplifier.

Wherein, the multiple uplinks of the multiple signal processing channels share the uplink transceiver channel of the transceiver unit, and the multiple downlinks of the multiple signal processing channels share the downlink transceiver channel of the transceiver unit.

The beneficial effects of the present invention are:

The control method of the time-division duplex repeater of the present invention can select a frequency band that can be synchronized with the base station from multiple frequency bands, and select the frequency band with the best signal quality to work. When the downlink time slot of the frequency band arrives, the received downlink signal is processed and sent out in the downlink channel corresponding to the frequency band; when the uplink time slot of the frequency band arrives, the uplink signal received is processed in the uplink channel corresponding to the frequency band Process it and send it out. It can be seen from this that the control method of the time division duplex repeater of the present invention can simultaneously support the transmission of signals in multiple frequency bands.

Description of drawings

Fig. 1 shows the schematic diagram of the principle of the digital repeater in the prior art;

Fig. 2 shows the schematic flow chart of the control method of the time division duplex repeater of the embodiment of the present invention;

Fig. 3 shows the structural block diagram of the control device of the time division duplex repeater of the embodiment of the present invention;

Fig. 4 represents the structural block diagram of processing module;

Fig. 5 represents the structural block diagram of sending module;

Fig. 6 shows one of the realization plan figure of the time division duplex repeater of the embodiment of the present invention;

Fig. 7 shows the second realization plan figure of the time division duplex repeater of the embodiment of the present invention;

Fig. 8 shows the third of the implementation plan figure of the time division duplex repeater of the embodiment of the present invention;

Fig. 9 shows the fourth realization plan figure of the time division duplex repeater of the embodiment of the present invention;

Fig. 10 shows the fifth of the implementation plan figure of the time division duplex repeater of the embodiment of the present invention;

Fig. 11 shows the sixth of the implementation plan figure of the time division duplex repeater of the embodiment of the present invention;

Fig. 12 shows the seventh of the realization plan figure of the time division duplex repeater of the embodiment of the present invention;

Fig. 13 shows the eighth of the implementation plan figure of the time division duplex repeater of the embodiment of the present invention;

Fig. 14 shows the ninth implementation plan diagram of the time division duplex repeater according to the embodiment of the present invention.

detailed description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

Embodiment one

According to an aspect of the embodiments of the present invention, a control method of a time division duplex repeater is provided. First, the method determines the frequency band that can be synchronized with the base station and the uplink and downlink time slots corresponding to the frequency band, and from the frequency band that can be synchronized with the base station. The frequency band with the best signal quality is selected from the frequency bands synchronized by the base station; then, in the uplink and downlink time slots, the signal of the corresponding time slot is received, and the signal is received in the channel corresponding to the frequency band with the best signal quality processing; finally, sending the processed signal.

As shown in Figure 2, the control method includes:

Step S21. Determine the frequency bands that can be synchronized with the base station and the uplink and downlink time slots corresponding to the frequency bands, and select the frequency band with the best signal quality from the frequency bands that can be synchronized with the base station.

Wherein, the uplink and downlink time slot refers to the uplink and downlink switching point of the TDD system.

Optionally, step S21 is specifically:

Opening the nth channel, and judging whether the nth channel can be synchronized with the base station, where n is a positive integer;

If it is judged within the preset time that the nth channel can be synchronized with the base station, then the nth channel is synchronized with the base station, and the signal quality of the frequency band corresponding to the channel and the frequency band are recorded Corresponding uplink and downlink time slots, and open the n+1th channel;

If it is judged within the preset time that the nth channel cannot be synchronized with the base station, then turn on the n+1th channel;

When all the channels are turned on, the frequency band with the best signal quality is selected from the recorded signal qualities of the frequency bands.

Specifically, referring to the specific implementation solution of the repeater in the embodiment of the present invention, for example, as shown in FIG. 6, step S21 includes:

After the system of the repeater shown in Figure 6 is turned on,

First, the control unit controls the switch selection unit Sh to turn on the filter F11, turn on the first channel Band1 where F11 is located, and perform synchronization;

Then, after a period of time t, if Band1 can be synchronized, record the signal quality of the frequency band corresponding to Band1 and the uplink and downlink time slots corresponding to this frequency band, and open F12; if it cannot be synchronized, open F12 directly and open the second channel Band2;

Again, if Band2 can be synchronized, record the signal quality of the frequency band corresponding to Band2 and the uplink and downlink time slots corresponding to this frequency band, and continue to switch the switch at the same time. If it cannot be synchronized, switch the switch directly;

Finally, when all n branches are turned on, compare the signal quality of the channels that can be synchronized, select the channel with the best signal quality, turn on the switch and keep working.

Step S23 , in the uplink and downlink time slots, receive the signal of the corresponding time slot, and process the signal in the channel corresponding to the frequency band with the best signal quality.

Because the uplink and downlink time slots include uplink switching points and downlink switching points, the control method of the time division duplex repeater in the embodiment of the present invention needs to be in the frequency band with the best signal quality and the uplink and downlink time slots of the frequency band The corresponding uplink time slot receives the uplink signal sent by the user terminal, and processes the uplink signal in the uplink channel corresponding to the frequency band with the best signal quality; in the corresponding downlink time slot, receives the downlink signal sent by the base station , and process the downlink signal in the downlink channel corresponding to the frequency band with the best signal quality.

Optionally, the step of processing the uplink signal in the uplink channel corresponding to the frequency band with the best signal quality is specifically:

Opening the entrance of the uplink channel corresponding to the frequency band with the best signal quality;

performing a first filtering process on the uplink signal;

Processing the uplink signal filtered for the first time by a transceiver unit;

performing power amplification on the uplink signal processed by the transceiver unit;

performing a third filtering process on the uplink signal after power amplification;

Open the outlet of the uplink channel corresponding to the frequency band with the best signal quality.

Of course, it can be understood that the control method of the time-division duplex repeater in the embodiment of the present invention is not limited to the processing process of the uplink signal, and the number of times of filtering processing can be increased or decreased according to the needs of the actual situation or other parameters can be added. Optimal processing of the signal.

Optionally, the step of processing the downlink signal in the downlink channel corresponding to the frequency band with the best signal quality is specifically:

Opening the entrance of the downlink channel corresponding to the frequency band with the best signal quality;

performing a first filtering process on the downlink signal;

Processing the downlink signal after the first filtering through the transceiver unit;

performing power amplification on the downlink signal processed by the transceiver unit;

performing a third filtering process on the downlink signal after power amplification;

Open the outlet of the downlink channel corresponding to the frequency band with the best signal quality.

Of course, it can be understood that the control method of the time division duplex repeater in the embodiment of the present invention is not limited to the processing process of the downlink signal, and can also increase or decrease the number of times of filtering processing or increase other parameters according to the actual situation. Optimal processing of the signal.

It can be seen that, in the control method of the time division duplex repeater according to the embodiment of the present invention, in the process of signal transmission, the process of processing the uplink signal and the downlink signal is basically the same. Of course, the processing process of the uplink and downlink signals may also be different, which is not specifically limited in this embodiment of the present invention.

Specifically, referring to the specific implementation scheme of the repeater in the embodiment of the present invention, as shown in FIG. 6 , wherein Fxy represents a filter, PAxy represents a power amplifier, and Sxy represents a switch selection unit, where x and y are A positive integer from 1 to n, and n is also a positive integer. sh represents the first switching module, sj represents the second switching module, R represents the receiving end of the transceiver unit, and T represents the transmitting end of the transceiver unit.

Assuming that the channel corresponding to the frequency band with the best determined signal quality is the channel corresponding to the F11 filter, the signal transmission process is as follows:

Downlink direction: the backhaul antenna receives the downlink signal of the base station, opens the corresponding frequency band filter through the first switching module Sh, and enters the transceiver unit after passing through the filter F11, and the signal is amplified and filtered in the transceiver unit, and then processed by the power amplifier PA21 Power amplification, filtering by the filter F21, and transmission to the user terminal through the access antenna after passing through the second switching module Sj;

Uplink direction: access the antenna to receive the uplink signal from the user terminal, open the corresponding frequency band filter through the second switching module Sj, and enter the transceiver unit after passing through the filter F21, the signal is amplified and filtered in the transceiver unit, and then transmitted through the power amplifier PA11 The power is amplified, filtered by the filter F11, and transmitted to the base station through the return antenna after passing through the first switching module Sh.

Step S15, sending the processed signal.

Since the control method of the time-division duplex repeater of the present invention is applied in the time-division duplex mode, it is divided into uplink transmission and downlink transmission, and there is also a difference in the sending object of the final signal, namely:

When it is an uplink time slot, the processed uplink signal needs to be sent to the base station;

When it is a downlink time slot, the processed downlink signal needs to be sent to the user end.

Embodiment two

According to another aspect of the embodiments of the present invention, a control device for a time division duplex repeater is also provided. As shown in FIG. 3 , the control device 300 includes:

The control synchronization module 301 is used to determine the frequency band that can be synchronized with the base station and the uplink and downlink time slots corresponding to the frequency band, and select the frequency band with the best signal quality from the frequency bands that can be synchronized with the base station;

The processing module 303 is configured to receive signals of corresponding time slots in the uplink and downlink time slots, and process the signals in the channel corresponding to the frequency band with the best signal quality;

The sending module 305 is configured to send the processed signal.

Optionally, the control synchronization module 301 is further used for:

Opening the nth channel, and judging whether the nth channel can be synchronized with the base station, where n is a positive integer;

If it is judged within the preset time that the nth channel can be synchronized with the base station, then the nth channel is synchronized with the base station, and the signal quality of the frequency band corresponding to the channel and the frequency band are recorded Corresponding uplink and downlink time slots, and open the n+1th channel;

If it is judged within the preset time that the nth channel cannot be synchronized with the base station, then turn on the n+1th channel;

When all the channels are turned on, the frequency band with the best signal quality is selected from the recorded signal qualities of the frequency bands.

Optionally, as shown in FIG. 4, the processing module 303 includes:

An uplink receiving unit 3031, configured to receive an uplink signal sent by the user terminal in the uplink time slot;

The uplink processing unit 3032 is configured to process the uplink signal in the uplink channel corresponding to the frequency band with the best signal quality.

Optionally, as shown in FIG. 5, the sending module 305 includes:

The uplink sending unit 3051 is configured to send the processed uplink signal to the base station.

Optionally, as shown in FIG. 4, the processing module 303 includes:

a downlink receiving unit 3033, configured to receive a downlink signal sent by the base station in the downlink time slot;

The downlink processing unit 3034 is configured to process the downlink signal in the downlink channel corresponding to the frequency band with the best signal quality.

Optionally, as shown in FIG. 5, the sending module 305 includes:

The downlink sending unit 3051 is configured to send the processed downlink signal to the user end.

Optionally, the uplink processing unit 3032 is further configured to:

Opening the entrance of the uplink channel corresponding to the frequency band with the best signal quality;

performing a first filtering process on the uplink signal;

Processing the uplink signal filtered for the first time by a transceiver unit;

performing power amplification on the uplink signal processed by the transceiver unit;

performing a third filtering process on the uplink signal after power amplification;

Open the outlet of the uplink channel corresponding to the frequency band with the best signal quality.

Optionally, the downlink processing unit 3034 is further configured to:

Opening the entrance of the downlink channel corresponding to the frequency band with the best signal quality;

performing a first filtering process on the downlink signal;

Processing the downlink signal after the first filtering through the transceiver unit;

performing power amplification on the downlink signal processed by the transceiver unit;

performing a third filtering process on the downlink signal after power amplification;

Open the outlet of the downlink channel corresponding to the frequency band with the best signal quality.

The control device of the time-division duplex repeater in the embodiment of the present invention is a device corresponding to the control method of the above-mentioned time-division duplex repeater, and can realize the control method of the above-mentioned time-division duplex repeater every step of the way.

Embodiment Three

According to another aspect of the embodiments of the present invention, a time-division duplex repeater is also provided, including the control device for the above-mentioned time-division duplex repeater.

Embodiment four

According to another aspect of the embodiments of the present invention, a time-division duplex repeater is also provided, as shown in FIGS. 6-14 , including:

return antenna, control unit and access antenna;

A plurality of signal processing channels, and any signal processing channel includes an uplink and a downlink, and the uplink is provided with a first filter, a first power amplifier and a second filter, and the downlink The link is provided with a third filter, a second power amplifier and a fourth filter;

A first switching module, connected to the control unit, for connecting multiple signal processing channels to the return antenna;

a transceiver unit, connected to the control unit and to the plurality of signal processing channels;

A second switching module, connected to the control unit, for connecting the multiple signal processing channels to the access antenna;

Wherein, the control unit determines the frequency band that can be synchronized with the base station and the uplink and downlink time slots corresponding to the frequency band, and selects the frequency band with the best signal quality from the frequency bands that can be synchronized with the base station; time slot, receiving the signal of the corresponding time slot through the return antenna or the access antenna, and processing the signal in the signal processing channel corresponding to the frequency band with the best signal quality; through the access The antenna or the return antenna transmits the processed signal.

Optionally, the uplink and the corresponding downlink share a filter.

In FIGS. 6-14 , Fxy represents a filter, PAxy represents a power amplifier, and Sxy represents a switch selection unit, where x and y are both positive integers from 1 to n, and n is also a positive integer. sh represents the first switching module, sj represents the second switching module, R represents the receiving end of the transceiver unit, and T represents the transmitting end of the transceiver unit.

As shown in Figure 7, Figure 8, Figure 10, Figure 11, Figure 13, and Figure 14, through the combination of different connection modes of multiple switch selection units, the uplink and downlink of each signal processing channel share a group The filter, as shown in FIG. 7 , is the channel where the F11 filter is located, and the uplink or downlink is turned on through the cooperation of the switch selection units S11 and S21.

Optionally, multiple uplinks of the multiple signal processing channels share an uplink transceiving channel of the transceiver unit, and multiple downlinks of the multiple signal processing channels share a downlink transceiving channel of the transceiver unit.

As shown in FIGS. 9-14 , the transceiver unit includes only one uplink transceiver channel and one downlink transceiver channel, and both the uplink transceiver channel and the downlink transceiver channel support the transmission of signals in multiple frequency bands. For example, in the implementation scheme of the time division duplex repeater shown in FIG. 9 , through the cooperation of the switch selection units S21 and S11 set in the uplink transceiver channel of the transceiver unit, uplinks of different frequency bands can be selected for signal transmission.

Optionally, multiple uplinks of the multiple signal processing channels share one power amplifier, and multiple downlinks of the multiple signal processing channels share another power amplifier.

Optionally, multiple uplinks of the multiple signal processing channels share an uplink transceiving channel of the transceiver unit, and multiple downlinks of the multiple signal processing channels share a downlink transceiving channel of the transceiver unit.

Specifically, Figures 6 to 14 show nine possible implementation solutions of the time division duplex repeater in the embodiment of the present invention. Among them, according to the implementation structure is divided into three categories. Among them, Figures 6 to 8 can be defined as the first category: the transceiver channels and power amplifiers are not shared; Figures 9 to 11 are defined as the second category: the transceiver channels are shared, and the power amplifiers are not shared; Figures 12 to 14 are defined as the third category: Both the transceiver channel and the power amplifier are shared.

Among them, as shown in Figures 6 to 14, the implementation schemes of the time-division duplex repeater in the embodiment of the present invention all select the frequency band through the switching of the RF front-end switch combination, and select the frequency band with the best signal quality through the control of the control unit. Frequency band work, thus realizing the system of time-division duplex system to work in multiple frequency bands through one device.

In addition, the implementation scheme shown in Figure 9, compared with the implementation scheme shown in Figure 6, the main difference is that each receiving end R and transmitting end T of the transceiver unit in Figure 9 supports multiple frequency bands, so Figure 9 The transceiver channel in can share. In the scheme realized in Figure 12, only one power amplifier is provided on the backhaul antenna side and the access antenna side, and the channel switching is performed through the switch selection unit, and the power amplifiers in the figure can support multiple frequency bands , so the scheme in Fig. 12 can share the power amplifier.

For the implementation schemes in FIG. 7 , FIG. 8 , FIG. 10 , FIG. 11 , FIG. 13 and FIG. 14 , the circuit structure is simplified to a certain extent through the switch selection units of different modes, and half of the number of filters is saved. Of course, it can be understood that, for relevant personnel, the realization of repeaters with other structures can be obtained according to the control method of time-division duplex repeaters of the present invention and the realization forms of repeaters shown in FIGS. 6-14 form, so the time division duplex repeater of the present invention does not specifically limit its implementation.

What has been described above is a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can also be made without departing from the principles described in the present invention. within the scope of protection of the invention.

Claims (22)

1. a kind of control method of time division duplex repeater, it is characterized in that, described control method comprises: Determining a frequency band that can be synchronized with the base station and an uplink and downlink time slot corresponding to the frequency band, and selecting a frequency band with the best signal quality from the frequency bands that can be synchronized with the base station; In the uplink and downlink time slots, receiving a signal of a corresponding time slot, and processing the signal in a channel corresponding to the frequency band with the best signal quality; Send the processed signal. 2. The control method according to claim 1, characterized in that, determining the frequency band that can be synchronized with the base station and the uplink and downlink time slots corresponding to the frequency band, and selecting signals from the frequency band that can be synchronized with the base station The steps for the frequency band with the best quality are as follows: Opening the nth channel, and judging whether the nth channel can be synchronized with the base station, where n is a positive integer; If it is judged within the preset time that the nth channel can be synchronized with the base station, then the nth channel is synchronized with the base station, and the signal quality of the frequency band corresponding to the channel and the frequency band are recorded Corresponding uplink and downlink time slots, and open the n+1th channel; If it is judged within the preset time that the nth channel cannot be synchronized with the base station, then turn on the n+1th channel; When all the channels are turned on, the frequency band with the best signal quality is selected from the recorded signal qualities of the frequency bands. 3. The control method according to claim 1, characterized in that, when the current time arrives at the uplink time slot, in the uplink and downlink time slot, the signal of the corresponding time slot is received, and when the signal quality is the lowest The steps for processing the signal in the channel corresponding to the good frequency band are as follows: In the uplink time slot, receive an uplink signal sent by the user terminal; The uplink signal is processed in the uplink channel corresponding to the frequency band with the best signal quality. 4. The control method according to claim 3, wherein when the current time reaches the uplink time slot, the step of sending the processed signal is specifically: Send the processed uplink signal to the base station. 5. The control method according to claim 1, wherein when the current time arrives at a downlink time slot, in the uplink and downlink time slots, the signal of the corresponding time slot is received, and when the signal quality is the best The steps for processing the signal in the channel corresponding to the frequency band are as follows: In the downlink time slot, receiving a downlink signal sent by the base station; The downlink signal is processed in the downlink channel corresponding to the frequency band with the best signal quality. 6. The control method according to claim 5, wherein when the current time reaches the downlink time slot, the step of sending the processed signal is specifically: sending the processed downlink signal to the user end. 7. The control method according to claim 3, wherein the step of processing the uplink signal in the uplink channel corresponding to the frequency band with the best signal quality is specifically: Opening the entrance of the uplink channel corresponding to the frequency band with the best signal quality; performing a first filtering process on the uplink signal; Processing the uplink signal filtered for the first time by a transceiver unit; performing power amplification on the uplink signal processed by the transceiver unit; performing a third filtering process on the uplink signal after power amplification; Open the outlet of the uplink channel corresponding to the frequency band with the best signal quality. 8. The control method according to claim 5, wherein the step of processing the downlink signal in the downlink channel corresponding to the frequency band with the best signal quality is specifically: Opening the entrance of the downlink channel corresponding to the frequency band with the best signal quality; performing a first filtering process on the downlink signal; Processing the downlink signal after the first filtering through the transceiver unit; performing power amplification on the downlink signal processed by the transceiver unit; performing a third filtering process on the downlink signal after power amplification; Open the outlet of the downlink channel corresponding to the frequency band with the best signal quality. 9. A control device of a time-division duplex repeater, characterized in that the control device comprises: Control the synchronization module, used to determine the frequency band that can be synchronized with the base station and the uplink and downlink time slots corresponding to the frequency band, and select the frequency band with the best signal quality from the frequency bands that can be synchronized with the base station; A processing module, configured to receive signals of corresponding time slots in the uplink and downlink time slots, and process the signals in the channel corresponding to the frequency band with the best signal quality; A sending module, configured to send the processed signal. 10. The control device according to claim 9, wherein the control synchronization module is further used for: Opening the nth channel, and judging whether the nth channel can be synchronized with the base station, where n is a positive integer; If it is judged within the preset time that the nth channel can be synchronized with the base station, then the nth channel is synchronized with the base station, and the signal quality of the frequency band corresponding to the channel and the frequency band are recorded Corresponding uplink and downlink time slots, and open the n+1th channel; If it is judged within the preset time that the nth channel cannot be synchronized with the base station, then turn on the n+1th channel; When all the channels are turned on, the frequency band with the best signal quality is selected from the recorded signal qualities of the frequency bands. 11. The control device according to claim 9, wherein the processing module comprises: an uplink receiving unit, configured to receive an uplink signal sent by the user terminal in the uplink time slot; The uplink processing unit is configured to process the uplink signal in the uplink channel corresponding to the frequency band with the best signal quality. 12. The control device according to claim 11, wherein the sending module comprises: an uplink sending unit, configured to send the processed uplink signal to the base station. 13. The control device according to claim 9, wherein the processing module comprises: a downlink receiving unit, configured to receive a downlink signal sent by the base station in the downlink time slot; The downlink processing unit is configured to process the downlink signal in the downlink channel corresponding to the frequency band with the best signal quality. 14. The control device according to claim 13, wherein the sending module comprises: a downlink sending unit, configured to send the processed downlink signal to the user end. 15. The control method according to claim 11, wherein the uplink processing unit is further used for: Opening the entrance of the uplink channel corresponding to the frequency band with the best signal quality; performing a first filtering process on the uplink signal; Processing the uplink signal filtered for the first time by a transceiver unit; performing power amplification on the uplink signal processed by the transceiver unit; performing a third filtering process on the uplink signal after power amplification; Open the outlet of the uplink channel corresponding to the frequency band with the best signal quality. 16. The control device according to claim 13, wherein the downlink processing unit is further configured to: Opening the entrance of the downlink channel corresponding to the frequency band with the best signal quality; performing a first filtering process on the downlink signal; Processing the downlink signal after the first filtering through the transceiver unit; performing power amplification on the downlink signal processed by the transceiver unit; performing a third filtering process on the downlink signal after power amplification; Open the outlet of the downlink channel corresponding to the frequency band with the best signal quality. 17. A time-division duplex repeater, characterized by comprising the control device of the time-division duplex repeater according to any one of claims 9-16. 18. A time-division duplex repeater, characterized in that it comprises: return antenna, control unit and access antenna; A plurality of signal processing channels, and any signal processing channel includes an uplink and a downlink, and the uplink is provided with a first filter, a first power amplifier and a second filter, and the downlink The link is provided with a third filter, a second power amplifier and a fourth filter; A first switching module, connected to the control unit, for connecting multiple signal processing channels to the return antenna; a transceiver unit, connected to the control unit and to the plurality of signal processing channels; A second switching module, connected to the control unit, for connecting the multiple signal processing channels to the access antenna; Wherein, the control unit determines the frequency band that can be synchronized with the base station and the uplink and downlink time slots corresponding to the frequency band, and selects the frequency band with the best signal quality from the frequency bands that can be synchronized with the base station; during the uplink and downlink receive the signal of the corresponding time slot through the return antenna or the access antenna, and process the signal in the signal processing channel corresponding to the frequency band with the best signal quality; through the access antenna Or the return antenna sends out the processed signal. 19. The time division duplex repeater according to claim 18, wherein the uplink and the corresponding downlink share a filter. 20. The time-division duplex repeater as claimed in claim 18, wherein a plurality of uplinks of the plurality of signal processing channels share the uplink transceiver channel of the transceiver unit, and the plurality of signal processing channels Multiple downlinks share the downlink transceiving channel of the transceiving unit. 21. The time-division duplex repeater as claimed in claim 18, wherein a plurality of uplinks of said plurality of signal processing paths share a power amplifier, and a plurality of downlinks of said plurality of signal processing paths way to share another power amplifier. 22. The time-division duplex repeater as claimed in claim 21, characterized in that, a plurality of uplinks of the plurality of signal processing channels share the uplink transceiver channel of the transceiver unit, and the plurality of signal processing channels Multiple downlinks share the downlink transceiving channel of the transceiving unit.