CN104639226A

CN104639226A - Dual-band wireless digital repeater, wireless communication system and data transmission method

Info

Publication number: CN104639226A
Application number: CN201510057021.1A
Authority: CN
Inventors: 刁心玺
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2008-10-23
Filing date: 2008-10-23
Publication date: 2015-05-20

Abstract

The invention discloses a dual-band wireless digital repeater, a dual-band wireless communication system, a data transmission method and a dual-band use method. The data transmission method comprises the following steps of 1, enabling the dual-band wireless digital repeater to receive business data from a sending end at one of two time division duplex frequency bands; 2, enabling the wireless digital repeater to send the business data to a receiving end through the other of the two time division duplex frequency bands. By adopting the technical scheme, the dual-band wireless digital repeater has the advantage that the transmission time delay of the existing TDD (time division duplex) wireless digital repeater and the feedback time relay of the existing TDD wireless repeater and the communication system can be reduced, so the spectrum efficiency of the TDD communication system is improved.

Description

Double frequency-band wireless digital repeater and wireless communication system, data transmission method

Technical field

The present invention relates to mobile communication technology field, particularly relate to the using method of a kind of double frequency-band wireless digital repeater and wireless communication system, data transmission method and a kind of double frequency-band.

Background technology

Due to wireless digital repeater there is wide coverage, power system capacity is large and lay the features such as easy, therefore, its application will be more and more extensive.In addition, due to time division duplex (Time Division Duplex, referred to as TDD), repeater is simple to spectrum requirement, uplink-downlink configuration flexible, and therefore, TDD repeater will become the main flow of wireless digital repeater.

Cell mobile communication systems wireless access network based on fixed wireless digital repeater (the Radio Area Networks of Fig. 1 for providing in correlation technique, referred to as RAN) part structural representation, as shown in Figure 1, several wireless digital repeater 101a ~ 101n is distributed in cellular basestation 102 around according to certain mode, mobile terminal 103 can set up communication link by certain or some wireless digital repeater and cellular basestation 102, in FIG, mobile terminal 103 sets up communication link by a wireless digital repeater 101f with the mode of double bounce and cellular basestation 102.Relay administrative unit 104 couples of wireless digital repeater 101a ~ 101n control, and carry out integrated management to the working time slot, working frequency points, code modulation mode etc. of wireless digital repeater 101a ~ 101n.

Fig. 2 A realizes Frequency Division Duplexing (FDD) (Frequency Division Duplex for the one that correlation technique provides, referred to as FDD) to the structural representation of wireless digital repeater of TDD conversion, as shown in Figure 2 A, wireless digital repeater comprises up-downgoing two passages, each passage carries out demodulation, decoding to the received signal, and again modulates before sending, encodes.The signal that down going channel receives is from donor antenna 201, through duplexer (i.e. filter) 202, low noise amplifier (Low Noise Amplifier, referred to as LNA) 203, down-conversion 204, analog to digital conversion (Analog to Digital, referred to as A/D) be delivered to downlink reception and transmitting baseband processing unit 206 after 205, downlink reception and transmitting baseband processing unit 206 are under the control of management control unit 219, carry out demodulation to received signal, decode and again modulate, after in the places such as coding, through digital to analog conversion (Digital to Analog, referred to as D/A) 207, up-conversion 208, power amplifier (Power Amplifier, referred to as PA) 209, radio-frequency (RF) switch 220, filter 211 is delivered to retransmitting antenna 210 and is transmitted into terminal, the signal from mobile terminal that data feedback channel receives is from retransmitting antenna 210, uplink receiving and transmitting baseband processing unit 215 is delivered to after filtering after device 211, radio-frequency (RF) switch 220, LNA 212, down-conversion 213, A/D 214, uplink receiving and transmitting baseband processing unit 215 are under the control of management control unit 219, carry out demodulation, decoding to received signal and again modulate, in the place such as coding after, be delivered to donor antenna 201 through digital to analog conversion 216, up-conversion 217, PA 218, duplexer 202, send to base station through donor antenna 201.

The structural representation of the fixed wireless DTU digital trunk unit for TDD system that Fig. 2 B provides for correlation technique, as shown in Figure 2 B, this wireless digital relay comprises: two antennas (i.e. donor antenna 201 and retransmitting antenna 210), filter (filter 211a, filter 211b), radio-frequency (RF) switch (radio-frequency (RF) switch 220a, radio-frequency (RF) switch 220b), receive path (comprising: LNA 212, down-conversion 213 and A/D 214), receive path baseband processing unit 206', transmission channel baseband processing unit 215', transmission channel (comprising: D/A 207, up-conversion 208 and PA 209), management control unit 219'.The essential difference of the repeater shown in the repeater shown in Fig. 2 B and Fig. 2 A is that the transmission channel of use a pair time-sharing work sends to the relaying realized in TDD system between base station and terminal.

The receiving course of above-mentioned fixed wireless digital repeater be divided into from base station (passing through donor antenna) Received signal strength and from terminal (by retransmitting antenna) Received signal strength two processes (if donor antenna and retransmitting antenna are same antennas, the corresponding mobile terminal of this situation is as the situation of repeater, then these two receiving courses are all Received signal strength from same antenna), repeater from the process of base station received signal is: in certain time slot, receive signal from donor antenna 201, by this signal via filter 211b, radio-frequency (RF) switch 220b, LNA 212, down-conversion 213, after A/D 214, send to receive path baseband processing unit 205'.Repeater from the process of mobile terminal Received signal strength is: the signal receiving self terminal in another time slot from retransmitting antenna 210, after this signal after filtering device 211a, radio-frequency (RF) switch 220a, LNA212, down-conversion 213, A/D 214, send to receive path baseband processing unit 206'.Management control unit 219' controls the time-interleaved of these two receiving courses.

The emission process of above-mentioned fixed wireless digital repeater is divided into two processes that transmit to base station (passing through donor antenna) and transmit to terminal (passing through retransmitting antenna) (if donor antenna and retransmitting antenna are same antennas, the corresponding mobile terminal of this situation is as the situation of repeater, then these two emission processs are all transmit from same antenna).Repeater to the process of base station transmit signals is: the baseband signal after transmission channel baseband processing unit 215' process is sent to space through transmission channel (that is, digital to analog conversion 207, up-conversion 208 and PA 209), radio-frequency (RF) switch 220b, filter 211b, donor antenna 201.Repeater to the process of terminal transmission signal is: the baseband signal after transmission channel baseband processing unit 215' process is sent to space through transmission channel (that is, D/A 207, up-conversion 208 and PA209), radio-frequency (RF) switch 220a, filter 211a, retransmitting antenna 210.Management control unit 219' controls the time-interleaved of these two emission processs.

In the communication system at the existing wireless digital repeater place for TDD system, generally comprise the mode of two kinds of transmission data, Fig. 3 A-Fig. 3 D is a kind of transmission data mode operating diagram in this communication system, as shown in Figure 3 A and Figure 3 B, base station 102 sends to the data D1 of terminal 103a to pass to mobile terminal 103a through repeater 101; As shown in figs. 3 c and 3d, mobile terminal 103a sends to the data D2 of base station 102 to pass to the process of base station 102 through repeater 101.Fig. 4 A-Fig. 4 D is the operating diagram of another kind of transmission data mode, as shown in Figure 4 A, base station 102 sends to the data D1 of terminal 103a also to send to mobile terminal 103a while sending to repeater 101, similarly, as shown in Figure 4 B, mobile terminal 103a sends to the data D2 of base station 102 also to send to base station 102 while sending to repeater 101, then, as shown in Figure 4 C, summarize data D1, the repeater 101 of D2 is D1, D2 is combined and forms data D3, then, as shown in Figure 4 D, repeater 101 is comprising data D1, the D3 of D2 sends to base station 102 and mobile terminal 103a simultaneously, to improve base station 102 and mobile terminal 103a to the reception of data.In this manner, the signal 401a that repeater 101 pairs of base stations 102 are launched is complete in identical time slot with the signal 401b of the transmitting to terminal 103a, but, repeater 101 sends to existing D1 in the data D3 of base station 102 and terminal 103a also to have D2, and base station 102 and terminal 103a need from receiving data D3 the data parsing it and need.

In current broadband wireless communication technique research, in order to reach high rate data transmission (such as 1Gbps), create the thinking of spectrum aggregation (Spectrum Aggregation), but, current spectrum aggregation is just by the comprehensive use to multiple continuous or discontinuous frequency band, improve the transmission rate of system or improve the business providing capability of system, in practice process, in the wireless communication system using multiple or multiple frequency band to assemble mutually, can solve and only use the TDD system of single frequency band or only use insoluble problem in the FDD system of a pair frequency spectrum, such as, business and the duplex mode controlling to be separated can be constructed, the problem of the feedback delay in single time division duplex band system by wireless frame period restriction can be solved by the cooperation of two time division duplex frequency spectrums.

The existing wireless digital repeater for TDD system, or the wireless digital repeater that TDD and FDD mixes mutually, due to the restriction of TDD wireless frame period, therefore there is the problem of following two aspects: 1) the up-downgoing cycle of TDD wireless frame structure significantly increases the propagation delay time end to end of system; 2) raising of feedback speed in the up-downgoing periodic restrictions repeated link of TDD wireless frame structure, thus make the reduction of the spectrum efficiency of Time Division Duplex repeater under high-speed mobile environment.

Summary of the invention

In view of this, the invention provides a kind of double frequency-band wireless digital repeater, dual band wireless communication system and data transmission method, in order to solve the problem that propagation delay time is end to end long and repeated link feedback speed is slow caused due to the up-downgoing cycle of wireless frame structure in prior art.

According to an aspect of the present invention, a kind of double frequency-band wireless digital repeater is provided.This double frequency-band wireless digital repeater is applied to the dual band wireless communication system comprising first kind radio node and Equations of The Second Kind radio node,

Double frequency-band wireless digital repeater according to the present invention comprises: baseband processing unit, resource management and control unit, to carry out the first antenna of communicating and carry out with Equations of The Second Kind radio node the second antenna of communicating with first kind radio node, and: be operated in the first frequency band and the first antenna and there is the first receive path and the first transmission channel that radio frequency is connected; Be operated in the second frequency band and the first antenna and there is the second receive path and the second transmission channel that radio frequency is connected; Be operated in the first frequency band and the second antenna and there is the 3rd receive path and the 3rd transmission channel that radio frequency is connected; Be operated in the second frequency band and the second antenna and there is the 4th receive path and the 4th transmission channel that radio frequency is connected; Radio-frequency (RF) switch, for realizing the switching between the first receive path and the first transmission channel, the switching between the second receive path and the second transmission channel, and, the switching between the 3rd receive path and the 3rd transmission channel, the switching between the 4th receive path and the 4th transmission channel.

According to a further aspect of the invention, a kind of dual band wireless communication system is provided.

Dual band wireless communication system according to the present invention comprises: double frequency-band wireless digital repeater, first kind wireless points and Equations of The Second Kind radio node.Wherein, first kind radio node and Equations of The Second Kind radio node, all for by with the radio-frequency channel of time division duplex in the first frequency band or the second band reception or transmitting, receive or transmitting business data; Double frequency-band wireless digital repeater, for the business datum from first kind radio node that will a frequency band in the first frequency band and the second frequency band receives, Equations of The Second Kind radio node is sent to by another frequency band in the first frequency band and the second frequency band, or, by the business datum from Equations of The Second Kind radio node that a frequency band in the first frequency band and the second frequency band receives, send to first kind radio node by another frequency band in the first frequency band and the second frequency band.

According to a further aspect of the invention, provide a kind of data transmission method, the method is applied to the wireless communication system comprising double frequency-band wireless digital repeater, and wherein, this wireless communication system is operated in two time division duplex frequency bands.

Data transmission method according to the present invention comprises: step 1, the frequency band of double frequency-band wireless digital repeater in two time division duplex frequency bands receives the business datum from transmitting terminal; Step 2, wireless digital repeater uses another frequency band in two time division duplex frequency bands that business datum is sent to receiving terminal.

According to a further aspect of the invention, a kind of using method of double frequency-band is provided.The method comprises the dual band wireless communication system of wireless digital repeater, network side radio node and wireless terminal, wherein, above-mentioned network side radio node communicates with wireless digital repeater, network side radio node communicates with wireless terminal, and wireless digital repeater communicates with wireless terminal.

Using method according to double frequency-band of the present invention comprises: in very first time interval, and wireless terminal or wireless digital repeater use the upstream or downstream slot transmission business datum of the radio frames on a frequency band in double frequency-band; In the second time interval after very first time interval, wireless terminal or wireless digital repeater use the upstream or downstream slot transmission business datum of the radio frames on another frequency band in double frequency-band.

By at least one scheme above-mentioned of the present invention, by configuration service channel and control channel rightly on the TDD frequency band that two exist interval, resource transmission is dispatched, reduce the propagation delay time that existing TDD wireless digital relaying is introduced, and the feedback delay of existing TDD wireless repeater and communication system, thus improve the spectrum efficiency of tdd communication system.

Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.

Accompanying drawing explanation

Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:

Fig. 1 is the structural representation comprising the cell mobile communication systems wireless access mesh portions of fixed wireless digital repeater according to prior art;

The structural representation of the wireless digital repeater of a kind of FDD to TDD conversion that Fig. 2 A provides for correlation technique;

The structural representation of the fixed wireless DTU digital trunk unit for TDD system that Fig. 2 B provides for correlation technique;

Fig. 3 A is that in prior art, a kind of base station sends one of schematic diagram of the method for data to terminal;

Fig. 3 B is the method schematic diagram two that in prior art, a kind of base station sends data to terminal;

Fig. 3 C is the schematic diagram three that in prior art, a kind of base station sends the method for data to terminal;

Fig. 3 D is the schematic diagram four that in prior art, a kind of base station sends the method for data to terminal;

Fig. 4 A is that in prior art, another kind of base station sends one of schematic diagram of the method for data to terminal;

Fig. 4 B is the method schematic diagram two that in prior art, another kind of base station sends data to terminal;

Fig. 4 C is the schematic diagram three that in prior art, another kind of base station sends the method for data to terminal;

Fig. 4 D is the schematic diagram four that in prior art, another kind of base station sends the method for data to terminal;

Fig. 5 is the structured flowchart of the double frequency-band wireless digital repeater according to the embodiment of the present invention;

Fig. 6 is the structural representation of the dual band wireless communication system according to the embodiment of the present invention;

Fig. 7 is the flow chart of the data transmission method according to the embodiment of the present invention;

Fig. 8 is the flow chart of the using method of double frequency-band according to the embodiment of the present invention;

Fig. 9 is the system configuration schematic diagram that embodiment one is applied;

Figure 10 is the system configuration schematic diagram that embodiment two is applied;

Figure 11 is the structural representation of two frequency bands used in embodiment three;

Figure 12 is the flow chart of the communication means of double frequency-band wireless digital repeater in embodiment three.

Embodiment

Functional overview

As mentioned above, the present invention is directed to the propagation delay time that existing TDD wireless digital relaying is introduced, cause the problem that spectrum efficiency is low, propose a kind of double frequency-band wireless digital repeater, dual band wireless communication system and utilize above-mentioned double frequency-band wireless digital repeater to carry out the method for transfer of data.In above-mentioned double frequency-band wireless digital repeater, each frequency is respectively arranged with the receive path and transmission channel that are connected with transmitting terminal and receiving terminal respectively, when the frequency band of this double-frequency wireless digital repeater in double frequency-band receiving the business datum from transmitting terminal, this business datum, by another frequency band in this double frequency-band, is sent to receiving terminal by this double-frequency wireless digital repeater.

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.

According to the embodiment of the present invention, provide firstly a kind of double frequency-band wireless digital repeater, this double frequency-band wireless digital repeater is applied to the dual band wireless communication system comprising first kind radio node and Equations of The Second Kind radio node.

Fig. 5 is the structured flowchart of the double frequency-band wireless digital repeater according to the embodiment of the present invention, as shown in Figure 5, double frequency-band wireless digital repeater according to the embodiment of the present invention comprises: the first antenna 501, second antenna 502, first transmission channel 503 (i.e. TX_B1_A1), first receive path 504 (i.e. RX_B1_A1), second transmission channel 505 (i.e. TX_B2_A1), second receive path 506 (i.e. RX_B2_A1), 3rd transmission channel 507 (i.e. TX_B1_A2), 3rd receive path 508 (i.e. RX_B1_A2), 4th transmission channel 509 (i.e. TX_B2_A2), 4th receive path 510 (i.e. RX_B2_A2), baseband processing unit 511, resource management and control unit 512, and radio-frequency (RF) switch 513 (has 4 radio-frequency (RF) switch 513-1 to 513-4 in Fig. 5, control the first antenna 501 respectively, two frequency bands of the second antenna 503).The structure of following connection with figures to this double frequency-band wireless digital repeater is described in detail.

First transmission channel 503 (TX_B1_A1) is operated in the first frequency band, there is radio frequency be connected with the first antenna 501; First receive path 504 (RX_B1_A1) is operated in the first frequency band, there is radio frequency be connected with the first antenna 501; Second transmission channel 505 (TX_B2_A1) is operated in the second frequency band, has that radio frequency is connected with the first antenna 501; Second receive path 506 (RX_B2_A1) is operated in the second frequency band, has that radio frequency is connected with the first antenna 501; 3rd transmission channel 507 (TX_B1_A2) is operated in the first frequency band, there is radio frequency be connected with the second antenna 502; 3rd receive path 508 (RX_B1_A2) is operated in the first frequency band, there is radio frequency be connected with the second antenna 502; 4th transmission channel 509 (TX_B2_A2) is operated in the second frequency band, there is radio frequency be connected with the second antenna 502; 4th receive path 510 (RX_B2_A2) is operated in the second frequency band, there is radio frequency be connected with the second antenna 502.

First antenna 501 realizes the switching between the first transmission channel 503 (TX_B1_A1) and the first receive path 504 (RX_B1_A1) by radio-frequency (RF) switch 513, and the switching between the second transmission channel 505 (TX_B2_A1) and the second receive path 506 (TX_B2_A1); Second antenna 502 realizes the switching between the 3rd transmission channel 507 (TX_B1_A2) and the 3rd receive path 508 (RX_B1_A2) by radio-frequency (RF) switch 513, and the switching between the 4th transmission channel 509 (TX_B2_A2) and receive path (TX_B2_A2).

Wherein, two working bands of the first antenna 501, second antenna 502: the first frequency band B1 and the second frequency band B2 is two un-paired band used with time division duplex, in specific implementation process, first frequency band B1 can be frequency band 1900MHz ~ 1920MHz, and the second frequency band B2 can be frequency band 2010MHz ~ 2025MHz.

In specific implementation process, the first antenna 501, second antenna 502 can be respectively one of following:

An aerial array covering the first frequency band and the second frequency band, and independently there is radio frequency and connect continuously in transmission channel and/or receive path to each antenna element in this aerial array with one;

A fan antenna covering the first frequency band and the second frequency band, and independently there is radio frequency and be connected in transmission channel and/or receive path to this fan antenna with one.

In the ordinary course of things, the bandwidth of operation of the first antenna 501, second antenna 502 can cover the first frequency band B1 and the second frequency band B2, when span when between B1 and B2 exceeds the bandwidth of the first antenna 501, second antenna 502, the first antenna 501, second antenna 502 can adopt two cover antenna elements to realize.

In specific implementation process, this double frequency-band wireless digital repeater first kind radio node can be wireless terminal, and Equations of The Second Kind radio node can comprise the one as the situation of sowing: wireless base station or RRU, wireless terminal or wireless digital repeater.

Baseband processing unit 511 for be sent to the first antenna 501, second antenna 502 and from first antenna 501, second antenna 502 receive signal carried out Base-Band Processing.Wherein, Base-Band Processing specifically can comprise a kind of of following process or combination in any: modulating/demodulating, channel-decoding/coding, data re-transmitting process.

The control information that resource management and control unit 512 issue for obtaining network from baseband processing unit 511, manage as follows and control, wherein, management and control specifically to comprise one of following or combination in any: control the synchronized relation between radio frames on the first antenna 501, second antenna 502 and the radio frames on network side radio node; Control the annexation between the first antenna 501, second antenna 502 and radio frequency unit; Determine whether the feedback control information required for data being sent in the second frequency band B2 transmission on the first frequency band B1, and/or on the second frequency band B2, be sent in the feedback information required for data of the first frequency band B1 transmission; Control the corresponding relation of the uplink and downlink timeslot of the first frequency band B1 on the first antenna 501 and/or the second antenna 502 and the radio frames on the second frequency band B2.Wherein, above-mentioned feedback information comprises one or the combination in any of following information: repeat request information, confirmation of receipt information, scheduling control information.

The above-mentioned double-frequency wireless digital repeater that the present embodiment provides can be applied in following two kinds of scenes: 1) as the fixed repeater of cellular mobile communication, install in a fixed manner, first antenna 501 terminaloriented (i.e. first kind radio node), the second antenna 502 is towards base station or towards other wireless repeater (i.e. Equations of The Second Kind radio node); 2) as the vehicle-mounted mobile repeater of cellular mobile communication, the first antenna 501 is arranged in car, terminaloriented, and the second antenna 502 is arranged on outside car, towards base station.

According to the above-mentioned double frequency-band wireless digital repeater that the embodiment of the present invention provides, the business datum from transmitting terminal that can will a frequency band receive, another frequency band sends to receiving terminal.

According to the embodiment of the present invention, additionally provide a kind of dual band wireless communication system.

Fig. 6 is the structural representation of the dual band wireless communication system according to the embodiment of the present invention, as shown in Figure 6, comprise according to the dual band wireless communication system of the embodiment of the present invention: double frequency-band wireless digital repeater 61 (the double frequency-band wireless digital repeater namely shown in Fig. 5), first kind radio node 63 and Equations of The Second Kind radio node 65.Wherein, first kind radio node 63 and Equations of The Second Kind radio node 65, all for by with the radio-frequency channel of time division duplex in the first frequency band or the second band reception or transmitting, receive or transmitting business data; Double frequency-band wireless digital repeater 61, for the business datum from first kind radio node 63 that will a frequency band in the first frequency band and the second frequency band receives, and send to Equations of The Second Kind radio node 65 by another frequency band in the first frequency band and the second frequency band, or, by the business datum from Equations of The Second Kind radio node 65 that a frequency band in the first frequency band and the second frequency band receives, send to first kind radio node 63 by another frequency band in the first frequency band and the second frequency band.

Further, double frequency-band wireless digital repeater 61, also for by another frequency band in the first frequency band and the second frequency band, is fed back the reception of the business datum of a frequency band in the first frequency band and the second frequency band or transmission or controls.

Particularly, first kind radio node 63 and Equations of The Second Kind radio node 65 can comprise respectively: a frequency band in the first frequency band and the second frequency band carries out reception or the transmission of business datum, and the wireless device on another frequency band of the first frequency band and described second frequency band, reception or the transmission of above-mentioned business datum being fed back or controlled.

Particularly, both the radio-frequency channel receiving on the first frequency band B1 with time division duplex or launch had been comprised in above-mentioned first kind radio node 63, also comprise the radio-frequency channel receiving on the second frequency band B2 with time division duplex or launch, the radio-frequency channel of first kind radio node can with the mode of half-or full-duplex reception/transmitting data on the first frequency band B1 or the second frequency band B2.

And Equations of The Second Kind radio node 65 can have the following two kinds composition form:

1) carry out at two time division duplex frequency band B1 and B2 the wireless device that radio frequency and Base-Band Processing carry out comprehensive Design, usually, adopt this composition form when B1 and B2 can be covered by the bandwidth of a set of antenna;

2) respectively time division duplex frequency band B1 and B2 is carried out to two wireless devices of radio frequency and Base-Band Processing design, namely a wireless device for carrying out radio frequency and Base-Band Processing design on frequency band B1, and another wireless device for carrying out radio frequency and Base-Band Processing design on frequency band B2.In specific implementation process, these two wireless devices can be mounted in same position, also can be mounted in different positions.Usually, this composition form is adopted when B1 and B2 can not be covered by the bandwidth of a set of antenna.

When Equations of The Second Kind radio node 65 adopts the second composition form, double-frequency wireless repeater 61 is communicated with two wireless devices of Equations of The Second Kind radio node 65 respectively by different frequency bands, in this case, Equations of The Second Kind radio node 65 wireless device comprises: the base station or the remote radio unit (RRU) that are operated in frequency band B1; Be operated in base station or the remote radio unit (RRU) of frequency band B2.

By the above-mentioned dual band wireless communication system that the embodiment of the present invention provides, the business datum that double-frequency wireless digital repeater receives can be sent over different frequency bands.

According to the embodiment of the present invention, additionally provide a kind of data transmission method, the method is applied to the wireless communication system comprising above-mentioned double frequency-band wireless digital repeater (the double frequency-band wireless digital repeater namely shown in Fig. 5), can be realized by above-mentioned double frequency-band wireless digital repeater and dual band wireless communication system.

Fig. 7 is the flow chart of the data transmission method according to the embodiment of the present invention, as shown in Figure 7, mainly comprises following process (step S701-step S703) according to the data transmission method of the embodiment of the present invention:

Step S701: the frequency band of double frequency-band wireless digital repeater in two time division duplex frequency bands receives the business datum from transmitting terminal;

Step S703: wireless digital repeater uses another frequency band in two time division duplex frequency bands that business datum is sent to receiving terminal.

Below further describe above-mentioned each process details.

(1) step S701

In the above-mentioned methods, transmitting terminal and receiving terminal are different radio nodes, and such as, transmitting terminal can be wireless terminal, and receiving terminal can be wireless base station, remote radio unit (RRU), another wireless terminal, wireless digital repeater, and vice versa.

Particularly, step S701 can comprise the process of following two steps:

Step 1, the frequency band of double frequency-band wireless digital repeater in two TDD frequency bands receives the radiofrequency signal from transmitting terminal;

Step 2, double frequency-band wireless digital repeater radio frequency signal carries out down-conversion, analog to digital conversion, and after radio frequency signal carries out demodulation code, obtains business datum.

After step 2, double frequency-band wireless digital repeater also needs to send feedback data to transmitting terminal, to inform whether this business datum of transmitting terminal sends successfully, for avoiding the delay of feedback data, double frequency-band wireless digital repeater adopts the frequency band different from received RF signal to send feedback data to transmitting terminal in embodiments of the present invention, therefore, after step 2, the method also comprises:

Step 3: double frequency-band wireless digital repeater carries out the result of demodulation code according to radio frequency signal, another frequency band in two time division duplex frequency bands sends feedback data to transmitting terminal.

Particularly, double frequency-band wireless digital repeater can adopt the following two kinds mode to send feedback data to transmitting terminal:

(1) full duplex sends: while the frequency band of double frequency-band wireless digital repeater in two time division duplex frequency bands enterprising industry business data receiver, another frequency band in two time division duplex frequency bands sends feedback data to transmitting terminal;

(2) half-duplex sends: the break time of the frequency band of double frequency-band wireless digital repeater in two time division duplex frequency bands enterprising industry business data receiver in interval, another frequency band in two time division duplex frequency bands sends feedback data to transmitting terminal.

Such as, if transmitting terminal is wireless terminal, and receiving terminal is wireless base station, in wireless communication system, two TDD frequency bands of each entity acts are the first frequency band B1 and the second frequency band B2, wireless terminal sends radiofrequency signal on the first frequency band B1, then double frequency-band wireless digital repeater receives and carrys out this radiofrequency signal on the first frequency band B1, then down-conversion is carried out to this radiofrequency signal, analog to digital conversion, then this radiofrequency signal is sent to the baseband processing unit of this double frequency-band wireless digital repeater, baseband processing unit carries out demodulation to this radiofrequency signal, decoding, thus obtain the business datum of wireless terminal transmission.Then, double frequency-band wireless digital repeater is according to the result of base place processing unit, in while first frequency band B1 receives from wireless terminal or break time interval, second frequency band B2 sends feedback data to wireless terminal, namely, in while double frequency-band wireless digital repeater the first receive path 504 in Figure 5 receives business datum or break time interval, feedback data is sent by the second transmission channel 505 to wireless terminal.

Particularly, above-mentioned feedback data can comprise one of following or its combination in any: scheduling control information, repeat request information, channel status or channel quality data.

(2) step S703

Particularly, step S703 can comprise following process:

Step 1, double-frequency wireless digital repeater carries out Base-Band Processing to needing the business datum sent; Before the business datum arrived to receiving terminal transmission and reception, the baseband processing unit of double-frequency wireless digital repeater carries out Base-Band Processing to needing the business datum sent, and mainly comprises: carry out chnnel coding, modulation and up-conversion to business datum.

Step 2, double-frequency wireless digital repeater uses another frequency band in two time division duplex frequency bands that the business datum after process is sent to receiving terminal.After business datum is done Base-Band Processing, this business datum, on another frequency band contrary with receiving this business datum, is sent to receiving terminal by double-frequency wireless digital repeater.Such as, if double-frequency wireless digital repeater receives the business datum from transmitting terminal by the first receive path 504 in Fig. 5, then this business datum is sent to receiving terminal by the 4th sendaisle 510 by this double-frequency wireless digital repeater.

Business datum is sent to receiving terminal by double-frequency wireless digital repeater, receiving terminal is after receiving business datum, demodulation, decoding are carried out to it, then feedback data is sent by the frequency band different from receiving this business datum to double-frequency wireless digital repeater, therefore, after step 2, the method also comprises:

Step 3, double-frequency wireless digital repeater uses band reception different from sending above-mentioned business datum in two time division duplex frequency bands from the feedback data of receiving terminal.Such as, if this business datum is sent to receiving terminal by the 4th sendaisle 509 in Fig. 5 by double-frequency wireless digital repeater, then double-frequency wireless digital repeater receives feedback data from receiving terminal by the 3rd receive path 510 in Fig. 5.

Similar to transmission feedback data, double-frequency wireless digital repeater also receives the feedback data from receiving terminal by following two kinds of methods:

(1) full duplex receives: the frequency band of double-frequency wireless digital repeater in use two time division duplex frequency bands another frequency band in two time division duplex frequency bands receives the feedback data from receiving terminal while sending business datum to receiving terminal;

(2) half-duplex receives: the frequency band of double-frequency wireless digital repeater in use two time division duplex frequency bands sends the break time of business datum in interval to receiving terminal, another frequency band in two time division duplex frequency bands receives the feedback data from receiving terminal.

Such as, while above-mentioned double-frequency wireless digital repeater sends business datum by the 4th sendaisle 509 in Fig. 5 to receiving terminal or in break time interval, double-frequency wireless digital repeater receives the feedback data from receiving terminal by the 3rd receive path 508, otherwise, if in while double-frequency wireless digital repeater sends business datum by the 3rd sendaisle 507 in Fig. 5 to receiving terminal or break time interval, double-frequency wireless digital repeater receives the feedback data from receiving terminal by the 4th receive path 510.

In the processing procedure of above-mentioned steps S701 and step S703, when double-frequency wireless digital repeater is communicated with transmitting terminal or receiving terminal by two time division duplex frequency bands simultaneously, TDD radio frame synchronization on two frequency bands used, and the part or all of ascending time slot of a radio frames in these two time division duplex wireless frames exists overlapping or overlapping with the part or all of descending time slot of another one radio frames or replaces on time of occurrence, or, the part or all of descending time slot of a radio frames in these two time division duplex wireless frames and the part or all of ascending time slot of another one radio frames exist overlapping or overlapping or replace on time of occurrence.Such as, the first frequency band B1 of double-frequency wireless digital repeater in two time division duplex frequency bands receives the business datum from wireless base station, and when the second frequency band B2 in two TDD frequency bands sending feedback data to this wireless base station, the part or all of descending time slot of a radio frames in the TDD radio frames on the first frequency band B1 exists with the part or all of ascending time slot of a radio frames of the TDD radio frames on the second frequency band B2 overlapping or overlapping or replaces on time of occurrence.

Particularly, the TDD radio frames on two frequency bands can adopt following two kinds of methods of synchronization to carry out synchronously:

Time division duplex wireless frame on a frequency band in (1) two frequency band aligns with the frame head of the time division duplex wireless frame on another frequency band;

The frame head of the time division duplex wireless frame on a frequency band in (2) two frequency bands and the time division duplex wireless frame on another frequency band keeps a predetermined time poor.Wherein, this time closes the cycle being less than a radio frames, and in specific implementation process, the value of wireless frame period is generally 5 milliseconds or 10 milliseconds.

According to the above-mentioned data transmission method of the embodiment of the present invention, the business datum that the frequency band existed in the TDD frequency band at interval receives can be sent on another frequency band at two.

According to the embodiment of the present invention, additionally provide a kind of using method of double frequency-band, the method is applied to the dual band wireless communication system comprising wireless digital repeater, network side radio node and wireless terminal, within the system, network side radio node communicates with wireless digital repeater, network side radio node communicates with wireless terminal, and wireless digital repeater communicates with wireless terminal.

Fig. 8 is the flow chart of the using method of double frequency-band according to the embodiment of the present invention, as shown in Figure 8, mainly comprises following process (step S801-step S803) according to the using method of the double frequency-band of the embodiment of the present invention:

Step S801: in very first time interval, wireless terminal or wireless digital repeater use the upstream or downstream slot transmission business datum of the radio frames in double frequency-band on a frequency band;

Step S803: in the second time interval after very first time interval, wireless terminal or wireless digital repeater use the upstream or downstream slot transmission business datum corresponding with above-mentioned upstream or downstream time slot of the radio frames in double frequency-band on another frequency band.That is, if use the ascending time slot service data transmission of the radio frames on a frequency band in step S801, then in step S803, the ascending time slot service data transmission of the radio frames on another frequency band is used; If use the descending time slot service data transmission of the radio frames on a frequency band in step S801, then in step S803, use the descending time slot service data transmission of the radio frames on another frequency band.

Wherein, above-mentioned second time interval can immediately the very first time interval, also can there is a time interval with very first time interval, generally, this time interval is less than a wireless frame period.Further, the initial time in very first time interval to the second time interval finish time between time span be less than a wireless frame period, or be less than and preset a wireless frame period.

Particularly, in above-mentioned double frequency-band, two frequency bands can be all the frequency band used in TDD mode, and upstream band or the downstream bands of also can be one of them frequency band be FDD frequency band, another frequency band is the frequency band that TDD mode uses.

When two frequency bands can be all the frequency band used in TDD mode, in order to the uplink/downlink time slot serial in time of two frequency bands is used, at least part of time slot of the TDD radio frames on two frequency bands is carried out reverse configuration by network, and wherein, the method for reverse configuration comprises one of following:

(1) frame head of the TDD radio frames controlled on two frequency bands aligns in time, and the time of occurrence of at least part of ascending time slot of one of them TDD radio frames interval is configured to the descending time slot of another one TDD radio frames, and the time of occurrence interval time of occurrence of at least part of descending time slot of one of them TDD radio frames interval being configured to the ascending time slot of another one TDD radio frames overlaps or overlaps mutually;

(2) keep a predetermined time poor the frame head of the TDD radio frames on two frequency bands, the frame head by the radio frames on two frequency bands staggers partial time slot in time.

Interval in the above-mentioned very first time, when using the upstream or downstream slot transmission business datum of the radio frames on the first frequency band B1 in double frequency-band when wireless terminal or wireless digital repeater, this wireless terminal or wireless digital repeater are by feedback relevant to the business datum that very first time interval is transmitted for the upstream or downstream slot transmission of the radio frames on the second frequency band B2 in this double frequency-band or control data, particularly, the ascending time slot of radio frames on the first frequency band B1 that what if service data transmission used is, the then ascending time slot transmission of this feedback or the radio frames of control data on the second frequency band B2, the descending time slot of radio frames on the first frequency band B1 that what if service data transmission used is, then the descending time slot transmission of this feedback or the radio frames of control data on the second frequency band B2.

And in the second time interval, when using the upstream or downstream slot transmission business datum of the radio frames on the second frequency band B2 in double frequency-band when wireless terminal or wireless digital repeater, this wireless terminal or wireless digital repeater are by feedback relevant to the business datum that the second time interval transmits for the upstream or downstream slot transmission of the radio frames on the first frequency band B1 in this double frequency-band or control data.

Wherein, above-mentioned control data comprises: scheduling control information, power control information, mode of operation indicator etc., and feedback data comprises: repeat request information, channel status or channel quality data etc.

By the communication means of the above-mentioned double-frequency wireless digital repeater of the embodiment of the present invention, serial can use different frequency bands, the flexibility that system is supported non-symmetrical service can be improved.

Be described with the embodiment of specific embodiment to the technique scheme that the embodiment of the present invention provides below.

Embodiment one

Be user terminal with transmitting terminal in the present embodiment, the base station of network side is receiving terminal is example, is described the data transmission method that this bright embodiment provides.

Fig. 9 is the system configuration schematic diagram of the present embodiment application, as shown in Figure 9, user terminal 91 uses two TDD frequency bands (B1 and B2) by double-frequency wireless digital repeater 93 to network side base station 95 service data transmission D1, suppose that double-frequency wireless digital repeater 93 is vehicle-mounted repeaters in the present embodiment, user terminal 91 in this vehicle-mounted repeater connection car and the base station 95 of network side, wherein, channel between repeater 93 and base station 95 is a quick time-varying channel, and the channel between repeater 93 and user terminal 91 is one becomes channel slowly.User terminal 91 sends data D1 to base station 95 and mainly comprises the following steps:

Step S901: repeater 93 carrys out user terminal 91 business datum from reception a TDD frequency band B2;

The radiofrequency signal that user terminal 91 is sent here by antenna A1 is obtained data D1 by repeater 93 after down-conversion, analog to digital conversion, demodulation, decoding process, according to the decoded result of D1, from confirmation of receipt signal C/F1-1 antenna A1 sending on TDD frequency band B1 D1 to user terminal 91, or from antenna A1 sending on TDD frequency band B1 the request repeat signal C/F1-1 (wherein, C/F1-is feedback data) of D1 to user terminal 91.Repeater 93 uses TDD frequency band B1 to send to user terminal 91 propagation delay time end to end that the confirmation of receipt signal of D1 or request repeat signal can reduce D1 on antenna A1;

Wherein, repeater 93 uses TDD frequency band B1 to send confirmation of receipt signal or the request repeat signal of D1 to user terminal 91 while can receiving on TDD frequency band B2 and carrying out user terminal 91 business datum on antenna A1; Or repeater 93 also can receive break time in interval of carrying out user terminal 91 business datum on TDD frequency band B2, antenna A1 uses TDD frequency band B1 send confirmation of receipt signal or the request repeat signal of D1 to user terminal 91.

Further, the TDD radio frame synchronization on the TDD frequency band B2 that repeater 93 uses and TDD frequency band B1, and the part or all of ascending time slot of a radio frames of TDD frequency band B2 is overlapping or overlapping with the part or all of descending time slot of TDD frequency band B1 or replace.

This step is equivalent to the step S701 in Fig. 7.

Step S902, data D1 is sent to base station by another one TDD frequency band B1 by repeater on antenna A2.

Data D1 is carried out chnnel coding, modulation by the baseband processing unit in repeater 93, and then, the D1 after repeater 93 pairs of coded modulation carries out up-conversion, antenna A2 uses TDD frequency band B1 send data D1 to base station 95.Before data D1 sends to base station 95, repeater 93 service band B2 on antenna A2 receives the scheduled control data C/F1-2 that base station 95 sends, after data D1 sends to, wireless data repeater service band B2 on antenna A2 receives data reception acknowledgement data or the request repeat signal C/F1-2 of base station 95 transmission.

While repeater 93 can send business datum D1 to base station 95 on TDD frequency band B1, antenna A2 use TDD frequency band B2 receive from the confirmation of receipt signal of base station 95 or request repeat signal; Or repeater 93 also can to send the break time of business datum D1 in interval at TDD frequency band B1 to base station 95, antenna A2 use TDD frequency band B2 receive confirmation of receipt signal from base station 95 or request repeat signal.

This step is equivalent to the step S703 in Fig. 7.

In order to shorten relaying time delay, repeater 93 uses TDD frequency band B2 from after user terminal 91 receives the transport block set in a Transmission Time Interval (TTI) of D1 on antenna A1, just uses time division duplex frequency band B1 to send to base station 95 from antenna A2 the D1 data in this transport block set.

According to the present embodiment, base station can be shortened by repeater to propagation delay time during user terminal to transmit data.

Embodiment two

Be the base station of network side with transmitting terminal in the present embodiment, receiving terminal is user terminal is example, is described the data transmission method that this bright embodiment provides.

Figure 10 is the system configuration schematic diagram of the present embodiment application, as shown in Figure 10, network side base station 95 uses two TDD frequency bands (B1 and B2) by double-frequency wireless digital repeater 93 to user terminal 91 service data transmission D2, suppose that double-frequency wireless digital repeater 93 is vehicle-mounted repeaters in the present embodiment, user terminal 91 in this vehicle-mounted repeater connection car and the base station 95 of network side, wherein, channel between repeater 93 and base station 95 is a quick time-varying channel, and the channel between repeater 93 and user terminal 91 is one becomes channel slowly.Base station 95 sends data D2 to user terminal 91 and mainly comprises the following steps:

Step S101: repeater 93 uses TDD frequency band B2 reception from the business datum D2 of base station 95 on antenna A2;

The radiofrequency signal from base station 95 received by TDD frequency band B2 at antenna A2 is obtained data D2 by repeater 93 after down-conversion, analog to digital conversion, demodulation, decoding process, according to the decoded result of D2, repeater 93 sends the confirmation of receipt signal C/F2-1 of D2 from antenna A2 use TDD frequency band B1 to base station 95, or sends the re-send request may signal C/F2-1 (namely sending feedback data to base station 95) of D2 from antenna A2 use TDD frequency band B1 to base station 95.The feedback data that repeater 93 uses TDD frequency band B1 to send D2 to base station 95 on antenna A2 can reduce the end-to-end propagation delay time of D2.Before data D2 sends to repeater 93, the first service band B1 in base station 95 sends scheduling controlling instruction C/F2-1 to repeater 93.

Wherein, repeater 93 can receive from while the business datum D2 of base station 95 on TDD frequency band B2, antenna A2 uses TDD frequency band B1 send confirmation of receipt signal or the request repeat signal of D2 to base station 95; Or repeater 93 also can receive break time from base station 95 business datum in interval on TDD frequency band B2, antenna A2 uses TDD frequency band B1 send confirmation of receipt signal or the request repeat signal of D2 to base station 95.

This step is equivalent to the step S701 in Fig. 7.

Step S103, data D2 is sent to user terminal 91 by TDD frequency band B1 by repeater 93 on antenna A1;

Data D2 is carried out chnnel coding, modulation by the baseband processing unit in repeater 93, and then, the D2 after repeater 93 pairs of coded modulation carries out up-conversion, antenna A1 uses TDD frequency band B1 send data D2 to terminal 91.Before transmission data D2, repeater 93 uses TDD frequency band B2 to send scheduling controlling instruction C/F2-2 to user terminal 91 on antenna A1, after data D2 sends to terminal 601, the data reception acknowledgement data that repeater 93 uses TDD frequency band B2 reception user terminal 91 to send on antenna A1 or request repeat signal C/F2-2, wherein, user terminal 91 is after receiving business datum D2, after demodulation, decoding are carried out to this D2, according to the result of demodulation code, TDD frequency band B2 is used to send data reception acknowledgement data or request repeat signal to repeater 93.

Equally, while repeater 93 can use TDD frequency band B1 to send data D2 to terminal 91 on antenna A1, use the feedback data that TDD frequency band B2 reception user terminal 91 is sent, also can sending the break time of data D2 in interval, the feedback data using TDD frequency band B2 to receive user terminal 91 to send.

This step is equivalent to the step S703 in Fig. 7.

In order to shorten relaying time delay, repeater 93 uses TDD frequency band B2 from after base station 95 receives the transport block set in a Transmission Time Interval (TTI) of D2 on antenna A2, just uses TDD frequency band B1 to give user terminal 91 from A1 the D2 in this transport block set.

Embodiment three

The present embodiment is to use in the communication system of two TDD frequency bands for communications, serial uses the first frequency band in two TDD frequency bands and the second frequency bands for communication to be example, is described the specific implementation method of the communication means of the double frequency-band wireless digital repeater of the embodiment of the present invention.

In this embodiment, the radio node of network side and the communication of double frequency-band wireless digital repeater in double frequency band-pass communication system; The radio node of network side and the communication of wireless terminal in dual-band systems; The communication of double frequency-band wireless digital repeater and wireless terminal.

Figure 11 is the structural representation of two frequency bands used in the present embodiment, as shown in figure 11, in the frame period 110 (or 120) of the radio frames that the first frequency band uses, there is the time interval 111 of descending time slot formation and the time interval 112 of ascending time slot formation respectively; In the frame period 210 (or 220) of the radio frames that the second frequency band uses, there is the time interval 211 of descending time slot formation and the time interval 212 of ascending time slot formation respectively.

Figure 12 is in the present embodiment, and the flow chart of the communication means of double frequency-band wireless digital repeater as shown in figure 12, mainly comprises the following steps:

Step S201: at least part of time slot of the TDD radio frames on the first frequency band and the second frequency band is carried out reverse configuration by network;

In this embodiment, as shown in figure 11, the reverse configuration of the uplink and downlink timeslot on two frequency bands is realized by the mode of the partial time slot that staggered in time by the frame head of the radio frames on two frequency bands.

Step S203: in very first time interval, transmits in the descending time slot of double frequency-band wireless digital repeater radio frames on a first band of frequencies;

In the present embodiment, as shown in figure 11, very first time interval be radio frames on the first frequency band frame period 110 (or 812) in the time interval 111 that forms of descending time slot in the some or all of time.Second time interval be radio frames on the second frequency band frame period 210 (or 220) in the time interval 112 that forms of descending time slot in the some or all of time.Transmit in the time interval 111 that descending time slot in the frame period 110 of then double frequency-band wireless digital repeater radio frames is on a first band of frequencies formed.

Step S205: in the second time interval, transmits in the descending time slot of double frequency-band wireless digital repeater radio frames over a second frequency band;

Transmit in the time interval 112 that descending time slot in the frame period 210 of i.e. radio frames is over a second frequency band formed;

Then return in time interval 111 that descending time slot in the frame period 120 of step S203 radio frames on a first band of frequencies forms and transmit, then, transmit in the time interval 112 that descending time slot in the frame period 220 of radio frames is over a second frequency band formed, be so cycled to repeat ground serial and use the resource on the first frequency band and the second frequency band to launch.

By the present embodiment, can serial the first frequency band be used to communicate with the descending time slot of the second frequency band.

Although the invention process is described by use two time division duplex frequency bands, be not limited to this, to the communication system using three or more time division duplex frequency bands, the technical scheme that the embodiment of the present invention provides is applicable equally.

As mentioned above, by the technical scheme that the embodiment of the present invention provides, the data of double-frequency wireless digital repeater by receiving on a frequency band, receiving terminal is sent to by another frequency band, reduce the relaying time delay occurred when using the wireless digital repeater of single TDD frequency band, improve feedback speed in repeated link, thus improve spectrum efficiency and the transmission rate of the repeater using TDD frequency spectrum under high-speed mobile environment; In addition, the serial provided by the embodiment of the present invention uses the method for different frequency bands, improve the flexibility that system is supported non-symmetrical service, can when not changing the up-downgoing transfer point of each frequency band, allow terminal obtain and an effect radio frames being all configured to uplink and downlink, avoid the asymmetric problem of inter-cell interference caused of adjacent cell up-downgoing under networking condition.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a double frequency-band wireless digital repeater, be applied to the dual band wireless communication system comprising first kind radio node and Equations of The Second Kind radio node, wherein, described repeater comprises: baseband processing unit, resource management and control unit, to carry out the first antenna of communicating and carry out with described Equations of The Second Kind radio node the second antenna of communicating with described first kind radio node, it is characterized in that, described double frequency-band wireless digital repeater also comprises:

Be operated in the first frequency band and described first antenna and there is the first receive path and the first transmission channel that radio frequency is connected;

Be operated in the second frequency band and described first antenna and there is the second receive path and the second transmission channel that radio frequency is connected;

Be operated in the first frequency band and described second antenna and there is the 3rd receive path and the 3rd transmission channel that radio frequency is connected;

Be operated in the second frequency band and described second antenna and there is the 4th receive path and the 4th transmission channel that radio frequency is connected;

Radio-frequency (RF) switch, for realizing the switching between described first receive path and described first transmission channel, the switching between described second receive path and described second transmission channel, and, switching between described 3rd receive path and the 3rd transmission channel, the switching between described 4th receive path and the 4th transmission channel.

2. double frequency-band wireless digital repeater according to claim 1, is characterized in that, described first frequency band and the second frequency band are two un-paired band used with time division duplex.

3. double frequency-band wireless digital repeater according to claim 1, is characterized in that, described first antenna and the second antenna are respectively one of following:

An aerial array covering the first frequency band and the second frequency band, wherein, independently there is radio frequency and be connected in transmission channel and/or receive path to each antenna element in described aerial array with one;

A fan antenna covering the first frequency band and the second frequency band, wherein, independently there is radio frequency and be connected in transmission channel and/or receive path to described fan antenna with one.

4. double frequency-band wireless digital repeater according to claim 1, is characterized in that, described first kind node is wireless terminal, and described Equations of The Second Kind node comprises one of following: wireless base station, remote radio unit (RRU), wireless terminal or wireless digital repeater.

5. double frequency-band wireless digital repeater according to claim 1, is characterized in that,

Described resource management and control unit, for determining whether the feedback information of the data being sent in described second frequency band transmission on described first frequency band, and/or on described second frequency band, be sent in the feedback information required for data of described first frequency band transmission.

6. double frequency-band wireless digital repeater according to claim 1, is characterized in that,

Described feedback information comprises one or the combination in any of following information: repeat request information, confirmation of receipt information, scheduling control information.

7. a dual band wireless communication system, is characterized in that, comprising: double frequency-band wireless digital repeater, first kind wireless points and Equations of The Second Kind radio node, wherein,

Described first kind radio node and described Equations of The Second Kind radio node, all for by with the radio-frequency channel of time division duplex in the first frequency band or the second band reception or transmitting, receive or transmitting business data;

Described double frequency-band wireless digital repeater, for the business datum from described first kind radio node that will a frequency band in described first frequency band and described second frequency band receives, described Equations of The Second Kind radio node is sent to by another frequency band in described first frequency band and described second frequency band, or

By the business datum from described Equations of The Second Kind radio node that a frequency band in described first frequency band and described second frequency band receives, send to described first kind radio node by another frequency band in described first frequency band and described second frequency band.

8. dual band wireless communication system according to claim 7, it is characterized in that, described double frequency-band wireless digital repeater, also for by another frequency band in described first frequency band and described second frequency band, is fed back the reception of the business datum on a frequency band in described first frequency band and described second frequency band or transmission or controls.

9. dual band wireless communication system according to claim 7, it is characterized in that, described first kind radio node and described Equations of The Second Kind radio node comprise respectively: a frequency band in described first frequency band and described second frequency band carries out reception or the transmission of business datum, and the wireless device on another frequency band of described first frequency band and described second frequency band, reception or the transmission of described business datum being fed back or controlled.

10. a data transmission method, is applied to the wireless communication system comprising double frequency-band wireless digital repeater, and wherein, described wireless communication system is operated in two time division duplex frequency bands, it is characterized in that, described method comprises:

Step 1, the frequency band of described double frequency-band wireless digital repeater in described two time division duplex frequency bands receives the business datum from transmitting terminal;

Step 2, described wireless digital repeater uses another frequency band in described two time division duplex frequency bands that described business datum is sent to receiving terminal.

11. methods according to claim 10, is characterized in that, described step 1 comprises:

Step 11, the described frequency band of described double frequency-band wireless digital repeater in described two time division duplex frequency bands receives the radiofrequency signal from described transmitting terminal;

Step 12, described double frequency-band wireless digital repeater carries out down-conversion, analog to digital conversion to described radiofrequency signal, and after carrying out demodulation code to described radiofrequency signal, obtains described business datum.

12. methods according to claim 11, is characterized in that, after described step 12, described method also comprises:

Step 13, described double frequency-band wireless digital repeater is according to the result of described radiofrequency signal being carried out to demodulation code, and another frequency band described in described two time division duplex frequency bands sends feedback data to described transmitting terminal.

13. methods according to claim 12, is characterized in that, described step 13 comprises one of following:

While the described frequency band of described double frequency-band wireless digital repeater in described two time division duplex frequency bands enterprising industry business data receiver, another frequency band described in described two time division duplex frequency bands sends described feedback data to described transmitting terminal;

The break time of the described frequency band of described double frequency-band wireless digital repeater in described two time division duplex frequency bands enterprising industry business data receiver in interval, another frequency band described in described two time division duplex frequency bands sends described feedback data to described transmitting terminal.

14. methods according to claim 10, is characterized in that, described step 2 comprises:

Step 21, described double-frequency wireless digital repeater carries out Base-Band Processing to needing the described business datum sent;

Step 22, described double-frequency wireless digital repeater uses another frequency band described in described two time division duplex frequency bands that the described business datum after process is sent to described receiving terminal.

15. methods according to claim 14, is characterized in that, after described step 22, described method also comprises:

Step 23, described double-frequency wireless digital repeater uses the described band reception in described two time division duplex frequency bands from the feedback data of described receiving terminal.

16. methods according to claim 15, is characterized in that, described step 23 comprises one of following:

Described double-frequency wireless digital repeater, while another frequency band sends business datum to described receiving terminal described in using in described two time division duplex frequency bands, the described frequency band in described two time division duplex frequency bands receives the feedback data from described receiving terminal;

Described double-frequency wireless digital repeater to send the break time of business datum in interval at another frequency band described in using in described two time division duplex frequency bands to described receiving terminal, the described frequency band in described two time division duplex frequency bands receives the feedback data from described receiving terminal.

17. methods according to claim 10, it is characterized in that, when described double frequency-band wireless digital repeater communicates with described transmitting terminal or receiving terminal, time division duplex wireless frame on a frequency band in described two time division duplex frequency bands that described double frequency-band wireless digital repeater uses and the time division duplex wireless frame synchronization on another frequency band, and, the part or all of ascending time slot of one of them time division duplex wireless frame and the part or all of descending time slot of another time division duplex wireless frame exist overlapping or overlapping or replace on time of occurrence, or, the part or all of descending time slot of one of them time division duplex wireless frame and the part or all of ascending time slot of another time division duplex wireless frame exist overlapping or overlapping or replace on time of occurrence.

18. methods according to claim 17, it is characterized in that, the time division duplex wireless frame on a frequency band in described two time division duplex frequency bands that described double frequency-band wireless digital repeater uses and the time division duplex wireless frame synchronization on another frequency band specifically comprise:

Time division duplex wireless frame on a described frequency band aligns with the frame head of the time division duplex wireless frame on another frequency band; Or

The frame head of the time division duplex wireless frame on a described frequency band and the time division duplex wireless frame on another frequency band keeps a predetermined time poor.

19., according to claim 10 to the method according to any one of 18, is characterized in that, described transmitting terminal and described receiving terminal are respectively different radio nodes.

The using method of 20. 1 kinds of double frequency-bands, be applied to the dual band wireless communication system comprising wireless digital repeater, network side radio node and wireless terminal, wherein, described network side radio node communicates with described wireless digital repeater, described network side radio node communicates with described wireless terminal, described wireless digital repeater communicates with described wireless terminal, it is characterized in that, described method comprises:

In very first time interval, described wireless terminal or wireless digital repeater use the upstream or downstream slot transmission business datum of the radio frames on a frequency band in described double frequency-band;

In the second time interval after described very first time interval, described wireless terminal or wireless digital repeater use the upstream or downstream slot transmission business datum of the radio frames on another frequency band in described double frequency-band.

21. methods according to claim 20, is characterized in that, two frequency bands in described double frequency-band are the frequency band used with time division duplex, and at least part of time slot of time division duplex wireless frame on two frequency bands in the described double frequency-band of reverse configuration.

22. methods according to claim 21, is characterized in that, at least part of time slot of the time division duplex wireless frame on two frequency bands in the described double frequency-band of described reverse configuration specifically comprises:

The frame head controlling the time division duplex wireless frame on described two frequency bands aligns in time, and the time of occurrence of at least part of ascending time slot of one of them time division duplex wireless frame interval is configured to the descending time slot of another one time division duplex wireless frame, and the interval time of occurrence interval being configured to the ascending time slot of another one time division duplex wireless frame of the time of occurrence of at least part of descending time slot of one of them time division duplex wireless frame overlaps or overlaps mutually; Or,

Keep a predetermined time poor the frame head of the time division duplex wireless frame on described two frequency bands.

23. methods according to claim 20, is characterized in that, a frequency band in described double frequency-band is upstream band or the downstream bands of Frequency Division Duplexing (FDD) frequency band, and another frequency band is the frequency band used with time division duplex.

24. methods according to claim 20, is characterized in that, the initial time in described very first time interval to described second time interval finish time between time span be less than one or preset cycle of a radio frames.

25. methods according to claim 20, it is characterized in that, in described very first time interval, described wireless terminal or wireless digital repeater use the feedback or control data that the upstream or downstream slot transmission of the radio frames on another frequency band described in described double frequency-band is relevant to business datum.

26. methods according to claim 20, it is characterized in that, in described second time interval, described wireless terminal or wireless digital repeater use the feedback or control data that the radio frame transmission on the described frequency band in described double frequency-band is relevant to business datum.

27. methods according to claim 20, is characterized in that, two frequency bands in described double frequency-band are the frequency band used with time division duplex.