CN102457315B - Antenna diversity device and antenna diversity method - Google Patents
Antenna diversity device and antenna diversity method Download PDFInfo
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- CN102457315B CN102457315B CN201010510314.8A CN201010510314A CN102457315B CN 102457315 B CN102457315 B CN 102457315B CN 201010510314 A CN201010510314 A CN 201010510314A CN 102457315 B CN102457315 B CN 102457315B
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Abstract
The invention provides an antenna diversity device and an antenna diversity method. The antenna diversity device comprises a plurality of groups of antennas, a switching unit, a demodulation unit, an antenna switching and selecting unit and a control unit, wherein each group of antennas in the plurality of groups of antennas comprises at least one antenna; the control unit can comprise a received signal quality detection unit, a packet detection unit and an antenna determination unit; the antenna determination unit can be realized by hardware, firmware or software; and the antenna switching and selecting unit can be realized by hardware. Through the antenna diversity device and a related method provided by the invention, the defect of reduced data transmission rate caused by burst error of a packet can be avoided by using a quick antenna switching mode, and quick switching to a proper antenna can also be realized when a data transmission channel changes.
Description
Technical field
The present invention relates to a kind of antenna diversity arrangement and antenna collection method, espespecially a kind of can the antenna diversity arrangement of switched antenna and antenna collection method fast.
Background technology
In order to the signal quality of which antenna of correct judgement is relatively good, previous technology (such as Taiwan Patent I256, No. 205) be the package informatin (such as received signal strength and received signal quality etc.) receiving one section of special time at a certain antenna, and then determine whether switched antenna according to statistics.Because such prior art is fixed on a certain antenna receiving package, if be just when choosing the poor antenna of the quality of reception, then in described one section of special time, the burst error (burst error) of bag will be there is and cause the other side transmission end to reduce the data rate (data rate) transmitting bag.
Please refer to Fig. 1 and Fig. 2, shown in Fig. 1 is Taiwan Patent I256, the simplification block schematic diagram of the antenna diversity arrangement 100 of No. 205, and shown in Fig. 2 is Taiwan Patent I256, the flow chart of the antenna collection method of No. 205.This antenna collection method receives one section of special time in an initial antenna, and after recording the statistics of the received signal quality of this initial antenna, an other antenna is switched to again from this initial antenna, and after recording the statistics of this other antenna, the received signal quality which antenna is the statistics that relatively these two antennas record decide is relatively good, and controls switch unit 130 and switch to received signal quality that antenna reasonable.In this antenna collection method, because switch in this section of special time of an antenna and have multiple bag, so likely can cause when controlling switch unit 130 and switching to the bad antenna of received signal quality, the burst error of wrapping can be there is and cause the reduction of transmit data rate.In addition, when data transmission channel changes, also need to spend the time more of a specified duration just can pick up and switch to best antenna.
Summary of the invention
Given this, an object of the present invention be to provide a kind of can the antenna diversity arrangement of switched antenna and antenna collection method fast, to solve the above problems.
According to claim of the present invention, it discloses a kind of antenna diversity arrangement, this antenna diversity arrangement includes: organize antenna, a switch unit, a demodulating unit, antenna switching selected cell and a control unit more, wherein, each the group antenna package in this many groups antenna contains at least one antenna; This switch unit is coupled to this many groups antenna, and for selecting one group of Received signal strength antenna to receive a signal transmission from this many groups antenna; This demodulating unit is coupled to this switch unit, and this demodulating unit includes: a bag detector, for detecting this signal transmission to produce a bag detection signal; And this antenna switching selected cell is coupled to this bag detector in this switch unit and this demodulating unit, for receiving this bag detection signal from this bag detector, and switch to change choosing of this group Received signal strength antenna between this many groups antenna to control this switch unit to produce an antenna switch control signal according to this bag detection signal.
According to claim of the present invention, it also discloses a kind of antenna collection method, and this antenna collection method includes: provide an antenna settings signal; From many group antennas, select one group of Received signal strength antenna to receive a signal transmission according to this antenna settings signal, wherein each group antenna package contains at least one antenna; Detect this signal transmission to produce a bag detection signal; And produce an antenna switch control signal according to this bag detection signal and switch to change choosing of this group Received signal strength antenna between this many groups antenna.
In sum, a kind of antenna diversity arrangement provided by the present invention and antenna collection method can utilize the mode of quick switched antenna to avoid the burst error (bursterror) that occurs to wrap and cause reducing the shortcoming of transmit data rate, and when data transmission channel changes, also suitable antenna can be switched to rapidly.
Accompanying drawing explanation
Shown in Fig. 1 is the simplification block schematic diagram of the antenna diversity arrangement of prior art.
Shown in Fig. 2 is the flow chart of the antenna collection method of prior art.
Shown in Fig. 3 is the simplification block schematic diagram of the antenna diversity arrangement of one embodiment of the invention.
Shown in Fig. 4 is the simplification block schematic diagram of the antenna diversity arrangement of another embodiment of the present invention.
Shown in Fig. 5 be multiple bags 0 ~ 6 in antenna diversity arrangement of the present invention, bag detection signal P, antenna switch control signal S, control signal E and antenna settings signal C one simplify time diagram.
Shown in Fig. 6 be multiple bags 0 ~ 6 in antenna diversity arrangement of the present invention, bag detection signal P, antenna switch control signal S, control signal E and antenna settings signal C another simplify time diagram.
Shown in Fig. 7 is to summarize the flow chart of the antenna collection method of one embodiment of the invention according to the function mode of antenna diversity arrangement of the above embodiment of the present invention and Fig. 5 and Fig. 6.
Shown in Fig. 8 be multiple bags 0 ~ 6 in antenna diversity arrangement of the present invention, bag detection signal P, antenna switch control signal S, control signal E and antenna settings signal C another simplify time diagram.
Shown in Fig. 9 be multiple bags 0 ~ 6 in antenna diversity arrangement of the present invention, bag detection signal P, antenna switch control signal S, control signal E and antenna settings signal C another simplify time diagram.
Shown in Figure 10 be multiple bags 0 ~ 5 in antenna diversity arrangement of the present invention, bag detection signal P, antenna switch control signal S, control signal E and antenna settings signal C another simplify time diagram.
Shown in Figure 11 be bag detection signal P in antenna diversity arrangement of the present invention, antenna switch control signal S, control signal E and antenna settings signal C another simplify time diagram.
Shown in Figure 12 is to summarize the flow chart of the antenna collection method of another embodiment of the present invention according to the function mode of antenna diversity arrangement of the above embodiment of the present invention and Figure 10 and Figure 11.
[main element symbol description]
100: receiver 110,120: antenna
130: switching device shifter 140: tuner
150: demodulator 160: control circuit
162: bag detecting unit 164: determining means
166: received signal strength detecting unit 300: antenna diversity arrangement
310: the first groups of antennas, 320: the second groups of antennas
330: switch unit 340: demodulating unit
342: bag detector 350: antenna switches selected cell
360: control unit 362: received signal quality detecting unit
364: bag detecting unit 366: antenna determining means
370: tuned cell 0 ~ 6: bag
P: bag detection signal D: restituted signal
S: antenna switch control signal E: control signal
C: antenna settings signal
Embodiment
Some vocabulary is employed to censure specific element in the middle of this specification and follow-up claim, and person with usual knowledge in their respective areas should understand, hardware manufacturer may call same element with different nouns, this specification and follow-up claim are not used as the mode of distinguish one element from another with the difference of title, but the criterion of differentiation is used as with element difference functionally, " including " mentioned in the middle of specification and follow-up claims is in the whole text an open term, therefore should be construed to " include but be not limited to ", in addition, " couple " word include directly any at this and be indirectly electrically connected means, therefore, if describe a first device in literary composition to be coupled to one second device, then represent this first device and directly can be electrically connected in this second device, or be indirectly electrically connected to this second device by other device or connection means.
Please refer to Fig. 3, shown in Fig. 3 is the simplification block schematic diagram of the antenna diversity arrangement 300 of one embodiment of the invention.As shown in Figure 3, antenna diversity arrangement 300 includes: one first group of antenna, 310,1 second group of antenna 320, switch unit 330, demodulating unit 340, antenna switches selected cell 350, control unit 360 and a tuned cell 370, wherein, first group of antenna 310 and second group of antenna 320 can include at least one antenna respectively; Switch unit 330 is coupled to first group of antenna 310 and second group of antenna 320, and for selecting one group of Received signal strength antenna to receive a signal transmission from first group of antenna 310 and second group of antenna 320; Demodulating unit 340 is coupled to switch unit 330, and for this signal transmission of demodulation to produce a restituted signal D, wherein demodulating unit 340 also includes a bag detector 342, and bag detector 342 is for detecting this signal transmission to produce a bag detection signal P (such as a CCA (clear channelassessment)); And antenna switching selected cell 350 is coupled to the bag detector 342 in switch unit 330 and demodulating unit 340, and for from bag detector 342 receiving package detection signal P, when antenna switches after selected cell 350 enters an antenna training pattern, antenna switches selected cell 350 and constantly can switch to change choosing of this group Received signal strength antenna between first group of antenna 310 and second group of antenna 320 to control switch unit 330 to produce an antenna switch control signal S according to bag detection signal P.Wherein, arbitrary bag sart point in time that antenna switching selected cell 350 can provide according to bag detection signal P or arbitrary end-of-packet time point constantly switch to change choosing of this group Received signal strength antenna to control switch unit 330 to produce antenna switch control signal S between first group of antenna 310 and second group of antenna 320, or, each bag sart point in time that antenna switching selected cell 350 also can provide according to bag detection signal P or each end-of-packet time point constantly switch to change choosing of this group Received signal strength antenna to control switch unit 330 to produce antenna switch control signal S between first group of antenna 310 and second group of antenna 320.Note that antenna switches selected cell and can be realized by a Digital Logical Circuits at this, this is because could quick switched antenna with hardware.
Control unit 360 is coupled to demodulating unit 340 and antenna switches selected cell 350, and for receiving this restituted signal D from demodulating unit 340 and providing an antenna settings signal C to control choosing of this group Received signal strength antenna, and produce a control signal E decide antenna switch selected cell 350 whether enter or leave this antenna training pattern, wherein, according to the signal quality of this group Received signal strength antenna, control unit 360 can determine whether that control antenna switches selected cell 350 and enters this antenna training pattern; Or according to a special time cycle, control unit 360 also can determine whether that control antenna switches selected cell 350 and enters this antenna training pattern.Wherein, after control unit 360 control antenna switching selected cell 350 enters this antenna training pattern, this antenna switch control signal S that antenna switching selected cell 350 produces can control switch unit 330 at arbitrary end-of-packet time point of bag detection signal P switch to first group of antenna 310 and second group of antenna 320 another group antenna wherein by first group of antenna 310 and second group of antenna 320, one group of antenna wherein; Or this antenna switch control signal S that antenna switching selected cell 350 produces can control switch unit 330 at each end-of-packet time point of bag detection signal P switch to first group of antenna 310 and second group of antenna 320 another group antenna wherein by first group of antenna 310 and second group of antenna 320, one group of antenna wherein.Control unit 360 can detect and the antenna training mode signal quality corresponding to this group Received signal strength antenna recorded selected by switch unit 330 according to this restituted signal D, in addition, according to another special time cycle, control unit 360 can determine whether that control antenna switches selected cell 350 and leaves this antenna training pattern.After control unit 360 control antenna switching selected cell 350 leaves this antenna training pattern, control unit 360 compare first group of antenna 310 and second group of antenna 320 corresponding respectively two antenna training mode signal quality to produce a comparative result, and upgrade this antenna settings signal C to switch selected cell 350 with switch unit 330 to control choosing of this group Received signal strength antenna via antenna according to this comparative result, wherein, each antenna training mode signal quality all includes a received signal quality and a bag testing result, and this received signal quality can include received signal strength (RSSI), the information such as signal noise ratio (SNR) and channel condition information (CSI), and this bag testing result can include the information such as bit error rate and packet error rate.Tuned cell 370 is coupled between switch unit and demodulating unit 340, and for carrying out down conversion process to this signal transmission.
Note that the above embodiments only illustrate as of the present invention at this, instead of restrictive condition of the present invention, for example, please refer to Fig. 4, shown in Fig. 4 is the simplification block schematic diagram of the antenna diversity arrangement 300 of another embodiment of the present invention.As shown in Figure 4, control unit 360 in the antenna diversity arrangement 300 of Fig. 3 can also include: received signal quality detecting unit 362, bag detecting unit 364 and an antenna determining means 366, wherein, antenna determining means 366 can use hardware, firmware or software to realize, and antenna switches selected cell 350 and then can use hardware to realize.Received signal quality detecting unit 362 is coupled to demodulating unit 340, and for detecting the received signal quality of first group of antenna 310 and second group of antenna 320; Bag detecting unit 364 is coupled to demodulating unit 340, and for generation of the bag testing result of first group of antenna 310 and second group of antenna 320; and antenna determining means 366 is coupled to received signal quality detecting unit 362, bag detecting unit 364 and antenna switch selected cell 350, and for provide this antenna settings signal C to control this group Received signal strength antenna choose and produce this control signal E decide antenna switch selected cell 350 whether enter or leave this antenna training pattern, wherein after antenna determining means 366 control antenna switching selected cell 350 enters this antenna training pattern, antenna determining means 366 records this antenna training mode signal quality corresponding to this group Received signal strength antenna selected by switch unit 330, and after or before antenna determining means 366 control antenna switching selected cell 350 leaves this antenna training pattern, antenna determining means 366 compare first group of antenna 310 and second group of antenna 320 received signal quality corresponding respectively and bag testing result to produce a comparative result, and upgrade this antenna settings signal C to switch selected cell 350 with switch unit 330 to control choosing of this group Received signal strength antenna via antenna according to this comparative result.Wherein, according to the received signal quality of this group Received signal strength antenna, antenna determining means 366 can determine whether that control antenna switches selected cell 350 and enters antenna training pattern; Or according to a special time cycle, antenna determining means 366 can determine whether that control antenna switches selected cell 350 and enters antenna training pattern.In addition, after antenna determining means 366 control antenna switching selected cell 350 enters this antenna training pattern, this antenna switch control signal S that antenna switching selected cell 350 produces can control switch unit 330 at arbitrary end-of-packet time point of bag detection signal P switch to first group of antenna 310 and second group of antenna 320 another group antenna wherein by first group of antenna 310 and second group of antenna 320, one group of antenna wherein; Or this antenna switch control signal S that antenna switching selected cell 350 produces can control switch unit 330 at each end-of-packet time point of bag detection signal P switch to first group of antenna 310 and second group of antenna 320 another group antenna wherein by first group of antenna 310 and second group of antenna 320, one group of antenna wherein.In addition, according to another special time cycle, antenna determining means 366 can determine whether that control antenna switches selected cell 350 and leaves this antenna training pattern.After or before antenna determining means 366 control antenna switching selected cell 350 leaves this antenna training pattern, antenna determining means 366 compare first group of antenna 310 and second group of antenna 320 received signal quality corresponding respectively and bag testing result to produce a comparative result, and upgrade this antenna settings signal C to switch selected cell 350 with switch unit 330 to control choosing of this group Received signal strength antenna via antenna according to this comparative result, wherein, received signal quality can include received signal strength (RSSI), the information such as signal noise ratio (SNR) and channel condition information (CSI), and bag testing result can include the information such as bit error rate and packet error rate.
In order to the operation of the antenna diversity arrangement 300 about the above embodiment of the present invention is further clearly described, please refer to Fig. 5, shown in Fig. 5 be multiple bags 0 ~ 6 in antenna diversity arrangement 300 of the present invention, bag detection signal P, antenna switch control signal S, control signal E and antenna settings signal C one simplify time diagram.As shown in Figure 5, for example, the initial signal value of the antenna settings signal C that antenna determining means 366 provides is 0, is at the beginning namely to choose first group of antenna 310 to be used as this group Received signal strength antenna, the initial signal value of the control signal E that antenna determining means 366 produces is 0, and namely the selected cell 350 of antenna switching at the beginning does not also enter this antenna training pattern, when not receiving bag, the signal value of bag detection signal P is 0, and in the process receiving bag, the signal value of bag detection signal P is 1, then, when the signal value of the control signal E that antenna determining means 366 produces changes 1 into from 0, this representative antennas switches selected cell 350 and starts to enter this antenna training pattern, and after antenna switching selected cell 350 enters this antenna training pattern, bag 1 received by first group of antenna 310, then, at the end time point of bag 1, the signal value that antenna switches this antenna switch control signal S that selected cell 350 produces can change 1 into from 0, this antenna switch control signal S that namely antenna switching selected cell 350 produces can control switch unit 330 and be switched to second group of antenna 320 by first group of antenna 310, so bag 2 received by second group of antenna 320, then, at the end time point of bag 2, the signal value of this antenna switch control signal S can change 0 into from 1, namely this antenna switch control signal S can control switch unit 330 and be switched to first group of antenna 310 by second group of antenna 320, so bag 3 received by first group of antenna 310, then, at the end time point of bag 3, the signal value of this antenna switch control signal S can change 1 into from 0, namely this antenna switch control signal S can control switch unit 330 and be switched to second group of antenna 320 by first group of antenna 310, so bag 4 received by second group of antenna 320, then, at the end time point of bag 4, the signal value of this antenna switch control signal S can change 0 into from 1, namely this antenna switch control signal S can control switch unit 330 and be switched to first group of antenna 310 by second group of antenna 320, so bag 5 received by first group of antenna 310, then, at the end time point of bag 5, the signal value of this antenna switch control signal S can change 1 into from 0, namely this antenna switch control signal S can control switch unit 330 and be switched to second group of antenna 320 by first group of antenna 310, in this process, control unit 360 can detect antenna training mode signal quality with the first group of antenna 310 recorded selected by switch unit 330 and second group of antenna 320 according to aforesaid restituted signal D, then, when the signal value of the control signal E that antenna determining means 366 produces changes 0 into from 1, this representative antennas switches selected cell 350 and starts to leave this antenna training pattern, and while antenna switching selected cell 350 leaves this antenna training pattern, the signal value of this antenna switch control signal S can change 0 into from 1, namely this antenna switch control signal S can control switch unit 330 and be switched to first group of antenna 310 by second group of antenna 320, in other words, be exactly control switch unit 330 to switch back that selected at the beginning group Received signal strength antenna.And after antenna switching selected cell 350 leaves this antenna training pattern, control unit 360 compare first group of antenna 310 and second group of antenna 320 corresponding respectively two antenna training mode signal quality to produce a comparative result, and the signal value of this antenna settings signal C is upgraded according to this comparative result, suppose that the antenna training mode signal quality of antenna training mode signal mass ratio first group of antenna 310 second groups of antennas 320 of second group of antenna 320 is good, so the signal value of this antenna settings signal C can be updated to 1, therefore, bag 6 can be received by second group of antenna 320.
In addition, please refer to Fig. 6, shown in Fig. 6 be multiple bags 0 ~ 6 in antenna diversity arrangement 300 of the present invention, bag detection signal P, antenna switch control signal S, control signal E and antenna settings signal C another simplify time diagram.The difference of the simplification time diagram of Fig. 6 and the simplification time diagram of Fig. 5 is, in figure 6, after antenna switching selected cell 350 enters this antenna training pattern, each bag sart point in time that antenna switches selected cell 350 to be provided according to bag detection signal P constantly switches to change choosing of this group Received signal strength antenna to control switch unit 330 to produce antenna switch control signal S between first group of antenna 310 and second group of antenna 320.Owing to there is no other different part between Fig. 6 and Fig. 5 except above-mentioned different characteristic, therefore, for for purpose of brevity, do not add at this detailed content repeating Fig. 6.
Then, please refer to Fig. 7, shown in Fig. 7 is to summarize the flow chart of the antenna collection method of one embodiment of the invention according to the function mode of antenna diversity arrangement 300 of the above embodiment of the present invention and Fig. 5 and Fig. 6, if identical result can be obtained substantially, step then in flow process not necessarily needs to perform according to the order shown in Fig. 7, also not necessarily needing is continuous print, that is, is the step can inserting other between these steps.The antenna collection method of the present embodiment includes the following step:
Step 500: start.
Step 502: an antenna settings signal is provided.
Step 504: select one group of Received signal strength antenna to receive a signal transmission according to this antenna settings signal from many group antennas, wherein each group antenna package contains at least one antenna.
Step 506: this signal transmission of demodulation to produce a restituted signal, and determines to enter an antenna training pattern? if so, then step 508 is performed; If not, then rebound step 504.
Step 508: detect and the antenna training mode signal quality recorded corresponding to this selected group Received signal strength antenna according to this restituted signal, with obtain this many groups antenna multiple antenna training mode signal quality corresponding to difference.
Step 510: switch to another group antenna.
Step 512: determine to leave this antenna training pattern? if so, then step 514 is performed; If not, then rebound step 508.
Step 514: select this group Received signal strength antenna selected before entering this antenna training pattern.
Step 516: compare this many groups antenna corresponding respectively the plurality of antenna training mode signal quality to produce a comparative result.
Step 518: upgrade this antenna settings signal according to this comparative result.
Note that in the antenna collection method of Fig. 7 of the present invention at this, step 514 belongs to optionally step, namely omissible.Please refer to Fig. 8, shown in Fig. 8 be multiple bags 0 ~ 6 in antenna diversity arrangement 300 of the present invention, bag detection signal P, antenna switch control signal S, control signal E and antenna settings signal C another simplify time diagram.The difference of the simplification time diagram of Fig. 8 and the simplification time diagram of Fig. 5 is, in Figure 5, when antenna switching selected cell 350 leaves this antenna training pattern, the signal value of this antenna switch control signal S is affected, in other words, before generation comparative result, antenna switch control signal S can be returned to the set point entered before this antenna training pattern, and in fig. 8, when antenna switching selected cell 350 leaves this antenna training pattern, the signal value of this antenna switch control signal S is not affected, in other words, before generation comparative result, antenna switch control signal S can maintain set point when leaving this antenna training pattern.Owing to there is no other different part between Fig. 8 and Fig. 5 except above-mentioned different characteristic, therefore, for for purpose of brevity, do not add at this detailed content repeating Fig. 8.
In addition, in another embodiment, step 516 also can complete before this antenna training pattern is left in decision, for example, before leaving this antenna training pattern, method of the present invention can produce this comparative result afterwards through a specific training time, also can obtain a specific quantity antenna training mode signal quality produce this comparative result afterwards, in other words, in the present embodiment, method of the present invention will determine to leave this antenna training pattern after this comparative result of generation.Please refer to Fig. 9, shown in Fig. 9 be multiple bags 0 ~ 6 in antenna diversity arrangement 300 of the present invention, bag detection signal P, antenna switch control signal S, control signal E and antenna settings signal C another simplify time diagram.The difference of the simplification time diagram of Fig. 9 and the simplification time diagram of Fig. 8 is, in fig .9, before antenna switching selected cell 350 leaves this antenna training pattern, control unit 360 compare first group of antenna 310 and second group of antenna 320 corresponding respectively two antenna training mode signal quality to produce a comparative result, the change of antenna settings signal C changes so can switch while selected cell 350 leaves this antenna training pattern at antenna, and make antenna switch control signal S according to antenna settings signal C to control switch unit 330, to select suitable antenna.Owing to there is no other different part between Fig. 9 and Fig. 8 except above-mentioned different characteristic, therefore, for for purpose of brevity, do not add at this detailed content repeating Fig. 9.
Please note at this, the above embodiments only illustrate as of the present invention, instead of restrictive condition of the present invention, for example, please refer to Figure 10, shown in Figure 10 be multiple bags 0 ~ 5 in antenna diversity arrangement 300 of the present invention, bag detection signal P, antenna switch control signal S, control signal E and antenna settings signal C another simplify time diagram.As shown in Figure 9, for example, the initial signal value of the antenna settings signal C that antenna determining means 366 provides is 0, is at the beginning namely to choose first group of antenna 310 to be used as this group Received signal strength antenna, the initial signal value of the control signal E that antenna determining means 366 produces is 0, and namely the selected cell 350 of antenna switching at the beginning does not also enter this antenna training pattern, when not receiving bag, the signal value of bag detection signal P is 0, and in the process receiving bag, the signal value of bag detection signal P is 1, simultaneously, demodulating unit 340 can judge whether in T to receive any bag (namely having judged whether in T to receive any signal transmission between given period) between a given period, (namely switch after selected cell 350 enters this antenna training pattern at antenna) after the signal value of the control signal E produced in antenna determining means 366 changes 1 into from 0, if demodulating unit 340 judges in T to receive bag (as shown in Figure 10) between given period, then the operation of antenna diversity arrangement 300 is just identical with the description of this specification when describing the simplification time diagram of Fig. 5, for for purpose of brevity, do not add to repeat at this, if demodulating unit 340 judges in T not receive bag (as shown in Figure 10) between given period, the signal value of this antenna switch control signal S that antenna switching selected cell 350 produces can change and (such as change 0 into from 1, as shown in Figure 10), this antenna switch control signal S that namely antenna switching selected cell 350 produces can control switch unit 330 and (such as be switched to first group of antenna 310 by second group of antenna 320, as shown in Figure 10) to switch Received signal strength antenna.
In addition, please refer to Figure 11, shown in Figure 11 be bag detection signal P in antenna diversity arrangement 300 of the present invention, antenna switch control signal S, control signal E and antenna settings signal C another simplify time diagram.As shown in figure 11, for example, (namely switch in selected cell 350 do not enter this antenna training pattern at antenna) in the signal value of the control signal E produced in antenna determining means 366 maintains 0, if demodulating unit 340 judges in T not receive bag (as shown in figure 11) between given period, antenna switches the signal value of this antenna switch control signal S that selected cell 350 produces and can change and (such as change 1 and change 0 into from 1 into from 0, as shown in figure 11), this antenna switch control signal S that namely antenna switching selected cell 350 produces can control switch unit 330 and (is such as switched to second group of antenna 320 by first group of antenna 310 to switch Received signal strength antenna and is switched to first group of antenna 310 by second group of antenna 320, as shown in figure 11).
Then, please refer to Figure 12, shown in Figure 12 is to summarize the flow chart of the antenna collection method of another embodiment of the present invention according to the function mode of antenna diversity arrangement 300 of the above embodiment of the present invention and Figure 10 and Figure 11, if identical result can be obtained substantially, step then in flow process not necessarily needs to perform according to the order shown in Figure 12, also not necessarily needing is continuous print, that is, is the step that can insert other between these steps.The antenna collection method of the present embodiment includes the following step:
Step 700: start.
Step 702: an antenna settings signal is provided.
Step 704: select one group of Received signal strength antenna to receive a signal transmission according to this antenna settings signal from many group antennas, wherein each group antenna package contains at least one antenna.
Step 706: this signal transmission of demodulation to produce a restituted signal, and determines to enter an antenna training pattern? if so, then step 708 is performed; If not, then step 722 is performed.
Step 708: judged whether to receive any signal transmission in a given period? if so, then step 710 is performed; If not, then step 712 is performed.
Step 710: according to this restituted signal detect with the antenna training mode signal quality recorded corresponding to this selected group Received signal strength antenna with obtain this many groups antenna multiple antenna training mode signal quality corresponding to difference.
Step 712: switch to another group antenna.
Step 714: determine to leave this antenna training pattern? if so, then step 716 is performed; If not, then rebound step 708.
Step 716: select this group Received signal strength antenna selected before entering this antenna training pattern.
Step 718: compare this many groups antenna corresponding respectively the plurality of antenna training mode signal quality to produce a comparative result.
Step 720: upgrade this antenna settings signal according to this comparative result.
Step 722: judged whether to receive any signal transmission in a given period? if so, then step 704 is performed; If not, then step 724 is performed.
Step 724: switch to another group antenna.
Note that in the antenna collection method of Figure 12 of the present invention at this, step 716 belongs to optionally step, namely omissible.In addition, in another embodiment, step 718 also can complete before this antenna training pattern is left in decision, for example, before leaving this antenna training pattern, method of the present invention can produce this comparative result afterwards through a specific training time, also can obtain a specific quantity antenna training mode signal quality produce this comparative result afterwards, in other words, in the present embodiment, method of the present invention will determine to leave this antenna training pattern after this comparative result of generation.
In sum, a kind of antenna diversity arrangement provided by the present invention and correlation technique can utilize the mode of quick switched antenna to avoid the burst error (burst error) that occurs to wrap and cause reducing the shortcoming of transmit data rate, and when data transmission channel changes, also suitable antenna can be switched to rapidly.
The foregoing is only the preferred embodiments of the present invention, all equalizations done according to the claims in the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (13)
1. an antenna diversity arrangement, includes:
Organize antenna, each group antenna package contains at least one antenna more;
One switch unit, is coupled to and described organizes antenna, for selecting one group of Received signal strength antenna to receive a signal transmission from described many group antennas more;
One demodulating unit, is coupled to described switch unit, and described demodulating unit comprises a bag detector, for detecting described signal transmission to produce a bag detection signal; And
One antenna switches selected cell, is coupled to the described bag detector in described switch unit and described demodulating unit, for receiving described bag detection signal from described bag detector,
Wherein, described demodulating unit is used for signal transmission described in demodulation to produce a restituted signal, and described antenna diversity arrangement also includes:
One control unit, be coupled to described demodulating unit and described antenna switching selected cell, for receiving described restituted signal from described demodulating unit and providing an antenna settings signal to control choosing of described one group of Received signal strength antenna, and produce a control signal decide described antenna switch selected cell whether enter or leave an antenna training pattern, wherein switch after selected cell enters described antenna training pattern when described control unit controls described antenna, described antenna switches selected cell and switches to change choosing of described one group of Received signal strength antenna to control described switch unit between described many group antennas to produce an antenna switch control signal according to described bag detection signal, described control unit detects and the antenna training mode signal quality corresponding to the one group of Received signal strength antenna recorded selected by described switch unit according to described restituted signal, and multiple antenna training mode signal quality of the more described many group antenna institutes of described control unit correspondence are respectively to produce a comparative result, and upgrade described antenna settings signal to determine choosing of described one group of Received signal strength antenna according to described comparative result.
2. antenna diversity arrangement according to claim 1, wherein, when described antenna switch selected cell enter described antenna training pattern time, described antenna switches arbitrary bag sart point in time that selected cell provides according to described bag detection signal or arbitrary end-of-packet time point switches to change choosing of described one group of Received signal strength antenna to control described switch unit to produce described antenna switch control signal between described many group antennas.
3. antenna diversity arrangement according to claim 1, wherein, when described antenna switch selected cell enter described antenna training pattern time, described antenna switches each bag sart point in time that selected cell provides according to described bag detection signal or each end-of-packet time point switches to change choosing of described group of Received signal strength antenna to control described switch unit to produce described antenna switch control signal between described many group antennas.
4. antenna diversity arrangement according to claim 1, wherein, after described antenna switching selected cell leaves described antenna training pattern, described antenna switches selected cell and produces described antenna switch control signal according to the described antenna settings signal after renewal.
5. antenna diversity arrangement according to claim 1, wherein, each antenna training mode signal quality includes a received signal quality and a bag testing result, and described control unit includes:
One received signal quality detecting unit, is coupled to described demodulating unit, for detecting the received signal quality of described many group antennas;
One bag detecting unit, is coupled to described demodulating unit, for generation of the bag testing result of described many group antennas; And
One antenna determining means, be coupled to described received signal quality detecting unit, described bag detecting unit and described antenna switch selected cell, and described antenna determining means for provide described antenna settings signal to control described group of Received signal strength antenna choose and produce described control signal decide described antenna switch selected cell whether enter or leave described antenna training pattern, wherein switch after selected cell enters described antenna training pattern when described antenna determining means controls described antenna, described antenna training mode signal quality corresponding to described one group of Received signal strength antenna described in described antenna determining means record selected by switch unit, and multiple antenna training mode signal quality of the more described many group antenna institutes of described antenna determining means correspondence are respectively to produce a comparative result, and upgrade described antenna settings signal to switch selected cell and described switch unit via described antenna to control choosing of described group of Received signal strength antenna according to described comparative result.
6. antenna diversity arrangement according to claim 5, wherein, according to the received signal quality of described one group of Received signal strength antenna, described antenna determining means determines whether that controlling described antenna switching selected cell enters described antenna training pattern.
7. antenna diversity arrangement according to claim 5, wherein, according to a special time cycle, described antenna determining means determines whether that controlling described antenna switching selected cell enters described antenna training pattern.
8. antenna diversity arrangement according to claim 1, wherein, described demodulating unit has also judged whether in a given period that receiving any signal transmission to produce a judgement signal switches selected cell to described antenna; And when described antenna switches after selected cell enters described antenna training pattern and described judgement signal points out that described demodulating unit does not receive any signal transmission in described given period, described antenna switches selected cell and can control described switch unit and change choosing of described one group of Received signal strength antenna.
9. antenna diversity arrangement according to claim 1, wherein, described demodulating unit has also judged whether in a given period that receiving any signal transmission to produce a judgement signal switches selected cell to described antenna; And when described antenna switching selected cell does not enter described antenna training pattern and described judgement signal points out that described demodulating unit does not receive any signal transmission in described given period, described antenna switches selected cell can control choosing of the described switch unit described one group of Received signal strength antenna of change.
10. antenna diversity arrangement according to claim 1, wherein, described antenna switches selected cell and is realized by a Digital Logical Circuits.
11. 1 kinds of antenna collection methods, include:
One antenna settings signal is provided;
From many group antennas, select one group of Received signal strength antenna to receive a signal transmission according to described antenna settings signal, wherein each group antenna package contains at least one antenna;
Detect described signal transmission to produce a bag detection signal; And
Described method also includes:
Signal transmission described in demodulation is to produce a restituted signal;
Determine whether enter or leave an antenna training pattern;
After entering described antenna training pattern, produce an antenna switch control signal according to described bag detection signal to carry out switching to change choosing of one group of Received signal strength antenna between described many group antennas, and according to described restituted signal detect with the antenna training mode signal quality recorded corresponding to selected described one group of Received signal strength antenna with obtain described organize antenna multiple antenna training mode signal quality corresponding to difference;
Described multiple antenna training mode signal quality of more described many group antenna institutes correspondence are respectively to produce a comparative result; And
Described antenna settings signal is upgraded to control choosing of described one group of Received signal strength antenna according to described comparative result.
12. antenna collection methods according to claim 11, wherein, produce an antenna switch control signal according to described bag detection signal and include in the described step chosen switching to change described one group of Received signal strength antenna between antenna of organizing more:
In an antenna training pattern, the arbitrary bag sart point in time provided according to described bag detection signal or arbitrary end-of-packet time point, produce described antenna switch control signal and switch to change choosing of described one group of Received signal strength antenna between described many group antennas.
13. antenna collection methods according to claim 11, wherein, produce an antenna switch control signal according to described bag detection signal and include in the described step chosen switching to change described one group of Received signal strength antenna between antenna of organizing more:
In an antenna training pattern, the bag sart point in time provided according to described bag detection signal or an end-of-packet time point, produce described antenna switch control signal and switch to change choosing of described one group of Received signal strength antenna between described many group antennas.
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| JP6032543B2 (en) * | 2012-10-19 | 2016-11-30 | パナソニックＩｐマネジメント株式会社 | Antenna switching reception system and corresponding transmission system |
| US10247820B2 (en) * | 2015-01-07 | 2019-04-02 | GM Global Technology Operations LLC | Spatial cognitive radar |
| CN106712800A (en) * | 2017-01-20 | 2017-05-24 | 广东欧珀移动通信有限公司 | WIFI antenna components and terminal equipment |
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