Background technology
Long Term Evolution (LongTermEvolution, is abbreviated as: the LTE) communication technology is comparatively universal in the whole world, but present mobile communication standard continues the transmission rate needing to improve data.For terminal equipment, such as, mobile phone or have the panel computer etc. of communication function, the mode of one of them important raising message transmission rate is carrier aggregation (CarrierAggregation, is abbreviated as: CA).Carrier aggregation allows single terminal equipment to be condensed together by multiple member carrier (ComponentCarrier, is abbreviated as: CC), realizes maximum transmission bandwidth, to reach maximum transmission rate.
See table 1, table 1 describes the frequency bandwidth of the member carrier used under wireless communication environments.In practical communication process, support that the terminal equipment of CDMA, GSM, LTE and/or LTE-Advanced may use one or more member carrier to carry out transfer of data simultaneously for one.In table 1, the first row on the left side represents the code name of each member carrier, and the uplink and downlink frequency bandwidth of each corresponding member carrier is shown in secondary series and the 3rd list, and the dual-mode of corresponding each member carrier is shown in the 4th list.Under the scene of non-carrier polymerization, the single member carrier of terminal equipment communicates; Under the scene of carrier aggregation, terminal equipment may be polymerized multiple member carrier and communicate, and is improved the message transmission rate of terminal equipment.
Table 1
Bandwidth of operation |
Upstream bandwidth |
Downlink bandwidth |
Dual-mode |
1 |
1920~1980 |
2110~2170 |
FDD |
2 |
1850~1910 |
1920~1990 |
FDD |
3 |
1710~1785 |
1805~1880 |
FDD |
4 |
1710~1755 |
2110~2155 |
FDD |
5 |
824~849 |
869~894 |
FDD |
6 |
830~840 |
865~875 |
FDD |
7 |
2500~2570 |
2620~2690 |
FDD |
8 |
880~915 |
925~960 |
FDD |
…… |
…… |
…… |
…… |
19 |
830~845 |
875~890 |
FDD |
20 |
832~862 |
791~821 |
FDD |
21 |
1447.9~1462.9 |
1495.9~1510.9 |
FDD |
22 |
3410~3500 |
3510~3600 |
FDD |
…… |
…… |
…… |
…… |
37 |
1910~1930 |
1910~1930 |
TDD |
38 |
2570~2620 |
2570~2620 |
TDD |
39 |
1880~1920 |
1880~1920 |
TDD |
40 |
2300~2400 |
2300~2400 |
TDD |
41 |
3400~3600 |
3400~3600 |
TDD |
See accompanying drawing 1, fig. 1 depicts in prior art, support the radio-frequency (RF) front-end circuit that the terminal equipment of carrier aggregation is conventional.This radio-frequency (RF) front-end circuit comprises dual-frequency channel merger 2, four multiplexer 3 and four multiplexers 4; Wherein, dual-frequency channel merger 2 one end is connected to antenna 1, and the signal after synthesis for carrier aggregation between frequency band, and is sent by antenna 1 by dual-frequency channel merger 2; Four multiplexers 3 and four multiplexers 4 are polymerized for frequency band intercarrier, and the signal after synthesis is sent to dual-frequency channel merger 2, dual-frequency channel merger 2 carries out carrier aggregation between frequency band to the signal that four multiplexers 3 and the transmission of four multiplexers 4 come further, and is sent by antenna 1 by the signal after polymerization.
Because dual-frequency channel merger 1 itself has Insertion Loss, especially, when processing high-frequency signal, Insertion Loss is very big.In addition, for supporting the radio-frequency (RF) front-end circuit of carrier aggregation between the polymerization of frequency band intercarrier and frequency band simultaneously, signal to be sent faces the secondary Insertion Loss that four multiplexers 3 or four multiplexers 4 and dual-frequency channel merger 2 bring, when terminal equipment is operated under non-carrier aggregation scheme, the tremendous influence that its signal transmitted is brought by Insertion Loss can, and then reduction signal transmission quality, cause data transmission period long, finally affect Consumer's Experience.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of the utility model protection.
Embodiment one
With reference to accompanying drawing 2, its first embodiment provided for the utility model.As shown in Figure 2, terminal equipment comprises, control circuit 5 and antenna 1, and terminal equipment also comprises: mixer 2, duplexer 6, four multiplexer 3 and four multiplexers 4; Control circuit 5 respectively with duplexer 6, four multiplexers 3 are connected with four multiplexers 4; The output Z2 of duplexer 6 is connected to antenna 1, the input port A of duplexer 6 connects the output port Z of four multiplexers 3, the input port C of duplexer 6 connects the output port Z1 of four multiplexers 4, and the input port B of duplexer 6 connects the output port Z3 of described mixer 2; The input port Z5 of mixer 2 is connected to the output port Z of four multiplexers 3; The input port Z4 of mixer 2 is connected to the output port Z1 of four multiplexers 4.
When the utility model embodiment identification terminal equipment is operated in non-carrier aggregation scheme, by setting up one for signal to be passed without the path with high Insertion Loss device, can effectively avoid Insertion Loss problem, improving signal transmission quality.
It should be noted that, mixer 2 can be dual-frequency channel merger or tri-frequency combiner.
Also it should be noted that, the input port Z5 of mixer 2 and input port Z4 can be integrated into a port.
The present embodiment both can be used under terminal equipment is in the scene of carrier aggregation, also can be used under terminal equipment is in the scene of non-carrier polymerization.Illustrate now as follows:
Concrete, when terminal equipment is under the scene of carrier aggregation, control circuit 5 identification terminal equipment is in carrier aggregation mode of operation, and when needing to carry out carrier aggregation between frequency band, port B connected by control antenna switch 6, the signal that four multiplexers 3 and four multiplexers 4 are received separately is delivered to dual-frequency channel merger 2 place and is carried out carrier aggregation between frequency band, and the signal after polymerization arrives antenna 1 by duplexer 6, and launches through antenna 1.
When terminal equipment is under the scene of non-carrier polymerization, control circuit 5 identification terminal equipment is in non-carrier polymerization mode of operation, port A or C connected by control antenna switch 6, the signal that four multiplexers 3 or four multiplexers 4 receive directly can arrive antenna 1 by duplexer 6, and launch through antenna 1, this avoid, when terminal equipment is in non-carrier polymerization mode of operation, signal still needs the problem by dual-frequency channel merger 2, avoids the problem of the Insertion Loss that dual-frequency channel merger 2 brings., it should be noted that, four multiplexers 3 or four multiplexers 4 according to the actual needs, can accept the signal of different frequency range herein, and such as, can arrange four multiplexers 3 and be exclusively used in reception high-frequency signal, four multiplexers 4 are specifically designed to reception low frequency signal., also it should be noted that, high-frequency signal and low frequency signal are relative concepts, and the utility model is not limited herein, with the usual use general knowledge of those skilled in the art for reference.
The carrier frequency of reference table 1, such as, four multiplexers 3 receive the up-link carrier signal that carrier frequency is 3400KHZ, control circuit 5 identification terminal equipment is in non-carrier polymerization mode of operation, then port A connected by control antenna switch 6, carrier signal then directly can arrive antenna 1 through duplexer 6, and launches through antenna 1.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Embodiment two
With reference to accompanying drawing 3, its another embodiment provided for the utility model.As shown in Figure 3, terminal equipment comprises,
Control circuit 5 and antenna 1, terminal equipment also comprises: mixer 2, duplexer 6, signal shift switch 3 and signal shift switch 4, control circuit 5 respectively with duplexer 6, signal shift switch 3 is connected with signal shift switch 4; The output port E of signal shift switch 3 is connected to the input port A of duplexer 6; The output port D of signal shift switch 3 is connected to the input port Z4 of mixer 2, and the output port Y of signal shift switch 4 is connected to the input port C of duplexer 6; The output port X of signal shift switch 4 is connected to the input port Z4 of mixer 2; The output Z2 of duplexer 6 is connected to described antenna 1; The input port A of duplexer 6 is connected to the output port E of signal shift switch 3; The input port C of duplexer 6 is connected to the output port Y of signal shift switch 4; The input port B of duplexer 6 is connected to the output port Z3 of mixer 2.
When the utility model embodiment identification terminal equipment is operated in non-carrier aggregation scheme, by setting up one for signal to be passed without the path with high Insertion Loss device, can effectively avoid Insertion Loss problem, improving signal transmission quality.
It should be noted that mixer 2 can be dual-frequency channel merger or tri-frequency combiner.
Also it should be noted that, signal shift switch 3 and signal shift switch 4 are double-pole multithrow switch.
The present embodiment both can be used under terminal equipment is in the scene of carrier aggregation, also can be used under terminal equipment is in the scene of non-carrier polymerization.Illustrate now as follows:
Concrete, the operational environment of the radio-frequency (RF) front-end circuit that the present embodiment provides as accompanying drawing 3 disclose, comprising: antenna 1, duplexer 6, control circuit 5, dual-frequency channel merger 2, double-pole multithrow switch 3 and double-pole multithrow switch 4.Control circuit 5 effect in the present embodiment comprises control antenna switch 6 and double-pole multithrow switch 3 and double-pole multithrow switch 4; Dual-frequency channel merger 2 carries out the process of conjunction road for the signal transmitted double-pole multithrow switch 3 and double-pole multithrow switch 4 place.
The carrier frequency of reference table 1, illustrating is described the present embodiment.If the input interface G of double-pole multithrow switch 3, H, I, J, K, L, M and N arrange reception high-frequency signal, the input interface O of double-pole multithrow switch 4, P, Q, R, S, T, U and V arranges reception low frequency signal, it is to be noted that in the present embodiment, so-called high-frequency signal and low frequency signal are relative concepts, there is no absolute numerical value to be distinguished, in practical service environment, designer can arrange the frequency operating range of double-pole multithrow switch 3 and double-pole multithrow switch 4 according to actual conditions.
When terminal equipment is under the scene of carrier aggregation, such as, the K input port of double-pole multithrow switch 3 receives the carrier signal that frequency is 2300KHZ, and the U port accepts of double-pole multithrow switch 4 is the carrier signal of 840KHZ to frequency,
Control circuit 5 identification terminal equipment is in carrier aggregation mode of operation, and when carrier signal needs to carry out carrier aggregation between frequency band, port B connected by control circuit 5 control antenna switch 6, and control circuit 5 controls the connection that double-pole multithrow switch 3 connects its output port D and input port K, control circuit 5 also controls the connection that double-pole multithrow switch 4 connects its output port X and input port U, make two-way carrier signal can reach dual-frequency channel merger 2, and carry out carrier aggregation at dual-frequency channel merger 2 place, by the signal after being polymerized by duplexer port B, arrive antenna 1, and then be sent out away.
When terminal equipment is under the scene of non-carrier polymerization, such as, the K input port of double-pole multithrow switch 3 receives the carrier signal that frequency is 2300KHZ, control circuit 5 identification terminal equipment is in non-carrier polymerization mode of operation, when carrier signal is without the need to carrying out carrier aggregation between frequency band, port A connected by control circuit 5 control antenna switch 6, control circuit 5 also controls the connection that double-pole multithrow switch 3 connects its output port E and input port K, like this, carrier signal directly connects its output port E by double-pole multithrow switch 3, through duplexer port A, arrive antenna 1, and then be sent out away.So, under the mode of operation that this signal is polymerized in non-carrier, bypassed the Insertion Loss that dual-frequency channel merger brings, ensure that the quality of signal.The mode of operation of the double-pole multithrow switch 3 of foregoing description is suitable for double-pole multithrow switch 4 equally.
It also should be noted that: the dual-frequency channel merger 2 in above-described embodiment can be changed to tri-frequency combiner.If change the words of tri-frequency combiner into, then corresponding, need adaptive three double-pole multithrow switches, each double-pole multithrow switch can be set to the signal receiving different frequency, such as, can arrange first double-pole multithrow switch and receive low frequency signal, second double-pole multithrow switch receiving intermediate frequency signal, the 3rd double-pole multithrow switch receives high-frequency signal.Same, low frequency signal, intermediate-freuqncy signal and high-frequency signal are all relative concepts, and in practical service environment, designer can be arranged according to actual conditions.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.