CN101908946B - Multi-antenna transmitting and receiving device and operation method thereof - Google Patents

Multi-antenna transmitting and receiving device and operation method thereof Download PDF

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Publication number
CN101908946B
CN101908946B CN200910146009.2A CN200910146009A CN101908946B CN 101908946 B CN101908946 B CN 101908946B CN 200910146009 A CN200910146009 A CN 200910146009A CN 101908946 B CN101908946 B CN 101908946B
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circuit
frequency
radio
antenna
receiving apparatus
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CN101908946A (en
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柳德政
张仲尧
颜光裕
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Realtek Semiconductor Corp
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Realtek Semiconductor Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention relates to a multi-antenna transmitting and receiving device and an operation method thereof. The multi-antenna transmitting and receiving device is used for transmitting and receiving a data frame and comprises M RF front-end circuits, an analog front-end circuit and a controller, wherein the controller is used for controlling the usage of the M RF front-end circuits and the analog front-end circuit according to different operation modes so as to achieve the efficacy of energy saving.

Description

Multi-antenna transmitting and receiving device and method of operation thereof
Technical field
The present invention relates to the wireless communication system of a kind of wireless communication system, particularly a kind of multiple-input and multiple-output.
Background technology
Multiple-input and multiple-output (multiple-input-multiple-out in recent years, be called for short MIMO) technology, be widely used in many wireless communication systems, as WLAN (wireless local area network) (wireless local areanetwork, be called for short WLAN), WiMAX (Worldwide Interoperability for MicrowaveAccess, global intercommunication microwave access), or even following the 4th generation (4G) mobile phone communication system, in order to promoting transmission rate, or increase channel capacity (channel capacity).
Be accompanied by the application of MIMO technology, wireless communication system is inevitably at transmitting terminal and receiving terminal, all must increase its antenna amount and radio-frequency (RF) front-end circuit (RF Front-end, be called for short RFE) and analog front circuit (Analog Front-end, be called for short AFE) number of elements, provide the biography of corresponding required multiple-input and multiple-output to receive path.But how to receive the circuit element on path at increase antenna amount and corresponding biography thereof, the increase of inhibition power consumption demand that also can be suitable, is the problem of current worth thinking in mimo system application.
Generally in wireless communication system, as shown in Figure 1, in the form (format) of each Frame (data frame) or grouping (packet), mostly have one section of preamble sequence (preamblesequence), detect (frame detection) or grouping detection (packetdetection) for Frame, automatic gain control (auto-gain control, be called for short AGC), carrier synchronization (carrier synchronization), timing synchronization (timing synchronization), and frame synchronization (frame synchronization) etc.Some system also has some pilot frequency sequences (pilotsequence) and is placed among preamble sequence, or intert between data sequence (data sequence), follow the trail of (adaptive tracking) for channel estimating (channel estimation) or the adaptability of channel equalizer (channel equalizer), and frequency tracking (frequency tracking) and sequential tracking (timing tracking).
If data sequence can be in response to different channel quality (channel quality) or flow (throughput) demand, adopt different modulation (modulation) and encoding rate (coding rate), or even different spatial flow (spatial stream) when number, the general one section of extra stem sequence (header sequence) that also all also has, before being placed in data sequence, make to receive function with correct demodulation and decoding process, solve the follow-up data sequence of receiving.And this stem sequence generally can be encoded with modulation and the encoding rate of minimum rank (lowest level), so to required Signal-to-Noise (signal-to-noise ratio of demodulation and when decoding, be called for short SNR) requirement can be minimum, also can resist poor channel response (channel response).
Fig. 2 is many antennas of typical case transmitter block diagram.Many antennas transmitter 200 includes a transmission Frame controller (TX frame controller) 210, a sequence selection circuit 212, a MIMO coded modulation circuit 214, sends radio-frequency (RF) front-end circuit and analog front circuit (TX RFE & AFE) 216 with M group.In the time that transmitting terminal will be sent a Frame or grouping, this transmission Frame controller (TX framecontroller) 210, can be in the specific time, by this sequence selection circuit 212 sequentially by preamble sequence (preamble sequence), stem sequence (header sequence) and data sequence (datasequence) are delivered to this MIMO coded modulation circuit 214, this MIMO coded modulation circuit 214 is according to specific modulation (modulation) and encoding rate (coding rate), and spatial flow (spatial stream) number, carry out after MIMO coded modulation, again via M group radio-frequency (RF) front-end circuit and analog front circuit (TXRFE & AFE) 216, send out the signal of each transmit path from M root antenna simultaneously, wherein M >=1.
Wherein data sequence can be in response to different channel quality (channel quality) or flow (throughput) demand, adopt different modulation (modulation) and encoding rate (coding rate), or even spatial flow (spatial stream), allow the signal on different transmit antennas path can be different, reach increase transmission rate, or increase the object of channel capacity.And data sequence modulation and coding parameter used can be placed among the content of stem sequence, allow receiving terminal know, wherein stem sequence is to do coded modulation with modulation and the encoding rate of minimum rank (lowest level).
Fig. 3 is a typical multi-aerial receiver block diagram.Multi-aerial receiver 300 includes a receiving data frames controller (RX frame controller) 310, a MIMO demodulating and decoding circuit 312, a sequence split circuit 314, organizes receiving radio frequency front end circuit and analog front circuit (TX RFE & AFE) 316 with N.Receiving terminal can, simultaneously from N root antenna, via N group RX RFE & AFE (316_1～316_N), receive the signal of N RX path.And utilize preamble sequence to do Frame or grouping detection (frame/packetdetection), judge whether Frame or grouping come in, once Frame or grouping detect successfully, then just can utilize preamble sequence to complete successively automatic gain control, carrier synchronization, timing synchronization and frame synchronization supervisor.After frame synchronization completes, the sequential of follow-up receiving sequence is just definite haply.Then, receiving data frames controller (RX frame controller) 310 can receive in correspondence the interval of stem sequence, with the decoding process of minimum rank (lowest level), stem sequence is carried out to MIMO demodulating and decoding.Receive the interval of data sequence in correspondence, can be according to the data that solve from stem sequence, the MIMO demodulating and decoding mode that selected data sequence is corresponding, by decoded data sequence out.
Multiaerial system, because use multiplex transmission path simultaneously,, for system power dissipation, can be therefore a burden.But, if with system average power consumption (P avg), be by transmission power consumption (P tX), receive power consumption (P rX), idle power consumption (P rX_Idle), and dormancy dormancy power consumption (P sleep), according on average obtaining its service time, be shown below:
P Avg = P TX · T TX + P RX · T RX + P RX _ Idle · T RX _ Idle + P Sleep · T Sleep T TX + T RX + T RX _ Idle + T Sleep . - - - ( 1 )
Distribute while being fixing when the time of system operation, how effectively to reduce transmission power consumption, receive power consumption, the power consumption of leaving unused or dormancy power consumption, becoming is a very important subject under discussion.
From the aspect of system applies, system is not in the time that passes receipts data, long often.And idle power consumption is often also all much larger than dormancy power consumption, therefore the more general known practice is the time that as far as possible increases dormancy in the past, or allows dormancy power consumption reduce as much as possible.Once but system enters resting state, have again the possibility of omitting grouping, will be restricted so system enters the time of park mode.Separately have a kind of known practice to be, most of the time is fixed and only allows to operate in single antenna biography receipts pattern, only has in the time that system need to improve transmission rate, just opens multi-antenna transmitting and receiving pattern, in order to save system average power consumption.
Therefore, how energy-conservationly how solving in above-mentioned multiaerial system, is in fact a subject under discussion urgently to be resolved hurrily.
Summary of the invention
In view of this, the present invention proposes a kind of saving power consumption method of multi-antenna transmitting and receiving device.
The present invention proposes a kind of multi-antenna transmitting and receiving device, and by this description and/or the description of the drawings, those skilled in the art can understand easily and other object, feature or effect of the present invention.
The present invention proposes a kind of multi-antenna receiving apparatus, has an idle mode and a receiving mode, and this multi-antenna receiving apparatus comprises: N RX path, in order to receive a Frame to export a reception signal; And a control circuit, be coupled to this N RX path, in order to according to this reception signal to control the use number of this N RX path; Wherein, in the time that this this multi-antenna receiving apparatus of reception signal indication operates in this idle mode, this control circuit enables M RX path, and forbids that (N-M) individual RX path is to receive this Frame, wherein, and 1≤M < N; And in the time that this this multi-antenna receiving apparatus of reception signal indication operates in this receiving mode, enable K RX path, and forbid that (N-K) individual RX path is to receive this Frame, wherein, 1≤K < N.
The present invention also proposes a kind of method of operation of multi-antenna receiving apparatus, being applicable to one has in the multi-antenna receiving apparatus of N RX path, this multi-antenna receiving apparatus has an idle mode and a receiving mode, the method of operation of this multi-antenna receiving apparatus comprises: in the time that this multi-antenna receiving apparatus operates in this idle mode, enable M RX path, and forbid that (N-M) individual RX path is to receive a Frame, and wherein, 1≤M < N; And in the time that this multi-antenna receiving apparatus operates in this receiving mode, enable K RX path, and forbid that (N-K) individual RX path is to receive this Frame, wherein, 1≤K < N.
Relevant preferred embodiment of the present invention and effect thereof, hereby coordinate accompanying drawing explanation as after.
Accompanying drawing explanation
Fig. 1 is in wireless communication system, the form of a conventional data frame (data frame);
Fig. 2 is many antennas of typical case transmitter block diagram;
Fig. 3 is a typical multi-aerial receiver block diagram;
Fig. 4 is the block diagram of the first embodiment of multi-aerial receiver of the present invention;
Fig. 5 is the flow chart of the first implementation method of multi-aerial receiver of the present invention;
Fig. 6 is the flow chart of the second implementation method of multi-aerial receiver of the present invention;
Fig. 7 is the flow chart of the 3rd implementation method of multi-aerial receiver of the present invention;
Fig. 8 is the flow chart of the 4th implementation method of multi-aerial receiver of the present invention;
Fig. 9 is the block diagram of one of many antennas transmitter-receiver of the present invention embodiment;
Figure 10 is the flow chart of the 5th implementation method of multi-aerial receiver of the present invention;
Figure 11 is the flow chart of the 6th implementation method of multi-aerial receiver of the present invention;
Figure 12 is the flow chart of the 7th implementation method of multi-aerial receiver of the present invention; And
Figure 13 is the flow chart of the 8th implementation method of multi-aerial receiver of the present invention.
[main element symbol description]
200: many antennas transmitter
210,912: send Frame controller
212,912: sequence selection circuit
214,914:MIMO coded modulation circuit
216,916: transmitting terminal radio-frequency (RF) front-end circuit and analog front circuit
300: multi-aerial receiver
310,410: receiving data frames controller
312,412,922:MIMO demodulating and decoding circuit
314,414,924: sequence split circuit
316,416,926: receiving terminal radio-frequency (RF) front-end circuit and analog front circuit
900: many antennas transmitter-receiver
910: Frame controller
Embodiment
The present invention is applied under multi-antenna transmitting and receiving pattern, reduces the apparatus and method of system average power consumption.When system is during in idle state, because when uncertain grouping can come in, therefore receiving terminal is the state detecting in grouping.Due to do grouping detect time, if the RX RFE & AFE of all RX path is all opened, power consumption now will be greater than the power consumption of the RX RFE & AFE in a katal order one antenna reception path.
Therefore the present invention is divided into system operating state:
(1) idle state: the RX RFE & AFE in a katal order one antenna reception path;
(2) transmission state: the TX RFE & AFE that only opens specific antenna transmit path;
(3) accepting state: the RX RFE & AFE that opens all antenna receptions path;
(4) resting state: close the RX RFE & AFE in all antenna receptions path and the TX RFE & AFE of all antenna transmit paths.
Wherein in accepting state, also can, according to minimum required antenna reception number of path, only retain the RX RFE & AFE that opens specific antenna RX path, the RX RFE & AFE in all the other antenna reception paths closes.In addition, in the time of idle state, be not limited with the RX RFE & AFE that opens specific single antenna RX path, also can be according to minimum required antenna reception number of path, the RX RFE & AFE that opens multiple antenna receptions path receives signal, and the RX RFE & AFE in all the other antenna reception paths closes.
Fig. 4 is an embodiment of multi-aerial receiver of the present invention.Multi-aerial receiver 400 of the present invention includes a receiving data frames controller 410, a MIMO demodulating and decoding circuit 412, a sequence split circuit 414 and N receiving radio frequency front end circuit and analog front circuit (RX RFE & AFE) 416.The difference of Fig. 4 and Fig. 3 is: receiving data frames controller (RX Frame Controller) 410 can control respectively this N receiving radio frequency front end circuit and analog front circuit (RX RFE & AFE) 416 to enable be illegal state, reach by this effect of saving power consumption.Owing to having N RX path simultaneously, therefore receiving data frames controller (RX Frame Controller) 410, can control respectively the on off state of the RXRFE & AFE 416 of N RX path.Due to function and the framework of other circuit, for those skilled in the art known, therefore omit the framework of this interlock circuit and the explanation of operation.
For multi-aerial receiver, the first implementation method of the present invention is:
(1) enter at the beginning idle state: only open the RX RFE & AFE of specific single antenna RX path, divide into groups to detect, the RX RFE & AFE in all the other antenna reception paths is all in closed condition.
(2) in the time detecting that grouping is come in, enter accepting state: open the RX RFE & AFE in all antenna receptions path, divide into groups to receive.Until grouping finishes, return idle state.
Fig. 5 is the flow chart of the first implementation method of multi-aerial receiver of the present invention.Wherein, in accepting state, also can, according to minimum required antenna reception number of path, only retain the RXRFE & AFE that opens specific antenna RX path, the RX RFE & AFE in all the other antenna reception paths closes.In addition, in idle state, also can be according to minimum required antenna reception number of path, the RX RFE & AFE that opens multiple antenna receptions path receives signal, and the RX RFE & AFE in all the other antenna reception paths closes.
For multi-aerial receiver, the second implementation method of the present invention is:
(1) enter at the beginning idle state: only open the RX RFE & AFE of specific single antenna RX path, divide into groups to detect, the RX RFE & AFE in all the other antenna reception paths is all in closed condition.
(2) in the time that system will be entered park mode, enter resting state: the RX RFE & AFE that closes all antenna receptions path.Until while leaving park mode, return idle state.
(3) in the time detecting that grouping is come in, enter accepting state: open the RX RFE & AFE in all antenna receptions path, divide into groups to receive.Until grouping finishes, return idle state.
Fig. 6 is the flow chart of the second implementation method of multi-aerial receiver of the present invention.Wherein, in accepting state, also can, according to minimum required antenna reception number of path, only retain the RXRFE & AFE that opens specific antenna RX path, the RX RFE & AFE in all the other antenna reception paths closes.In addition, in idle state, also can be according to minimum required antenna reception number of path, the RX RFE & AFE that opens multiple antenna receptions path receives signal, and the RX RFE & AFE in all the other antenna reception paths closes.
For multi-aerial receiver, the third implementation method of the present invention is:
(1) enter at the beginning the first idle state: the RXRFE & AFE that only opens specific single antenna RX path, carry out signal energy and detect and grouping detection, the RX RFE & AFE in all the other antenna reception paths is all in closed condition.
(2) when at the first idle state, and detect when signal energy exceedes the first critical value, just enter the second idle state: open the RX RFE & AFE in all the other antenna reception paths, proceed signal energy and detect with grouping and detect.
(3) when at the first idle state, and detect when grouping is come in, enter accepting state: open the RX RFE & AFE in all the other antenna reception paths, the reception of divide into groups.Until grouping finishes, return the first idle state.
(4) when at the second idle state, and when signal energy detected lower than the second critical value, just get back to the first idle state: the RX RFE & AFE that only retains specific single antenna RX path, close the RX RFE & AFE in all the other antenna reception paths, proceed signal energy and detect and grouping detection.
(5) when at the second idle state, and detect when grouping is come in, just enter accepting state: the reception of divide into groups.Until grouping finishes, return the first idle state.
Fig. 7 is the flow chart of the 3rd implementation method of multi-aerial receiver of the present invention.Wherein, in accepting state, also can, according to minimum required antenna reception number of path, only retain the RXRFE & AFE that opens specific antenna RX path, the RX RFE & AFE in all the other antenna reception paths closes.In addition, in idle state, also can be according to minimum required antenna reception number of path, the RX RFE & AFE that opens multiple antenna receptions path receives signal, and the RX RFE & AFE in all the other antenna reception paths closes.
For multi-aerial receiver, the 4th kind of implementation method of the present invention is:
(1) enter at the beginning the first idle state: the RXRFE & AFE that only opens specific single antenna RX path, carry out signal energy and detect and grouping detection, the RX RFE & AFE in all the other antenna reception paths is all in closed condition.
(2) when at the first idle state, and system is will enter park mode time, enters resting state: the RX RFE & AFE that closes all antenna receptions path.Until while leaving park mode, return the first idle state.
(3) when at the first idle state, and detect when signal energy exceedes the first critical value, just enter the second idle state: open the RX RFE & AFE in all the other antenna reception paths, proceed signal energy and detect with grouping and detect.
(4) when at the first idle state, and detect when grouping is come in, enter accepting state: open the RX RFE & AFE in all the other antenna reception paths, the reception of divide into groups.Until grouping finishes, return the first idle state.
(5) when at the second idle state, and system is will enter park mode time, enters resting state: the RX RFE & AFE that closes all antenna receptions path.Until while leaving park mode, return the first idle state.
(6) when at the second idle state, and when signal energy detected lower than the second critical value, just get back to the first idle state: the RX RFE & AFE that only retains specific single antenna RX path, close the RX RFE & AFE in all the other antenna reception paths, proceed signal energy and detect and grouping detection.
(7) when at the second idle state, and detect when grouping is come in, just enter accepting state: the reception of divide into groups.Until grouping finishes, return the first idle state.
Fig. 8 is the flow chart of the 4th implementation method of multi-aerial receiver of the present invention.Wherein, in accepting state, also can, according to minimum required antenna reception number of path, only retain the RXRFE & AFE that opens specific antenna RX path, the RX RFE & AFE in all the other antenna reception paths closes.In addition, in idle state, also can be according to minimum required antenna reception number of path, the RX RFE & AFE that opens multiple antenna receptions path receives signal, and the RX RFE & AFE in all the other antenna reception paths closes.
Fig. 9 is the block diagram of an embodiment of many antennas transmitter-receiver of the present invention.Many antennas transmitter-receiver 900 of the present invention include a Frame controller 910, a transmitting terminal circuit, with a receiving terminal circuit.This transmitting terminal circuit includes a sequence selection circuit 912, a MIMO coded modulation circuit 914, organizes transmitting terminal radio-frequency (RF) front-end circuit and analog front circuit (TX RFE & AFE) 916 with M.This receiving terminal circuit also include a MIMO demodulating and decoding circuit 922, a sequence split circuit 924, with N receiving terminal radio-frequency (RF) front-end circuit and analog front circuit (RX RFE & AFE) 926.The difference of the receiving terminal of the 9th figure and the 3rd figure is: Frame controller (Frame Controller) 910 can control respectively this N receiving radio frequency front end circuit and analog front circuit (RX RFE & AFE) 926 to enable be illegal state, reach by this effect of saving power consumption.The difference of the receiving terminal of the 9th figure and the 2nd figure is: Frame controller (Frame Controller) 910 can control respectively this M transmitting terminal radio-frequency (RF) front-end circuit and analog front circuit (TX RFE & AFE) 916 to enable be illegal state, reach by this function of saving power consumption.Owing to thering is M transmit path and N RX path simultaneously, therefore Frame controller (FrameController) 910, can control respectively the on off state of the TX RFE & AFE of M transmit path and the RX RFE & AFE of N RX path.Due to function and the framework of other circuit, be well known to those skilled in the art, therefore omit the framework of this interlock circuit and the explanation of operation.
For multi-antenna transmitting and receiving machine, the 5th kind of implementation method of the present invention is:
(1) enter at the beginning idle state: the RX RFE & AFE that only opens specific single antenna RX path, divide into groups to detect, the RX RFE & AFE in all the other antenna reception paths, and the TX RFE & AFE of all antenna transmit paths is all in closed condition.
(2) if will send grouping time, switch to transmission state: the TX RFE & AFE that only opens specific antenna transmit path, divide into groups to send, the TX RFE & AFE of all the other antenna transmit paths, and the RX RFE & AFE in all antenna receptions path is all in closed condition.While sending end Deng grouping, return idle state.
(3) in the time detecting that grouping is come in, enter accepting state: the RX RFE & AFE that opens all antenna receptions path, divide into groups to receive, now the TX RFE & AFE of all antenna transmit paths is all in closed condition.Until grouping finishes, return idle state.
The flow chart of the 5th implementation method that the 10th figure is multi-aerial receiver of the present invention.Wherein, in accepting state, also can, according to minimum required antenna reception number of path, only retain the RX RFE & AFE that opens specific antenna RX path, the RX RFE & AFE in all the other antenna reception paths closes.In addition, in idle state, also can be according to minimum required antenna reception number of path, the RX RFE & AFE that opens multiple antenna receptions path receives signal, and the RX RFE & AFE in all the other antenna reception paths closes.
For multi-antenna transmitting and receiving machine, the 6th kind of implementation method of the present invention is:
(1) enter at the beginning idle state: the RX RFE & AFE that only opens specific single antenna RX path, divide into groups to detect, the RX RFE & AFE in all the other antenna reception paths, and the TX RFE & AFE of all antenna transmit paths is all in closed condition.
(2) in the time that system will be entered park mode, enter resting state: close the RX RFE & AFE in all antenna receptions path and the TX RFE & AFE of all antenna transmit paths.Until while leaving park mode, return idle state.
(3) if will send grouping time, switch to transmission state: the TX RFE & AFE that only opens specific antenna transmit path, divide into groups to send, the TX RFE & AFE of all the other antenna transmit paths, and the RX RFE & AFE in all antenna receptions path is all in closed condition.While sending end Deng grouping, return idle state.
(4) in the time detecting that grouping is come in, enter accepting state: the RX RFE & AFE that opens all antenna receptions path, divide into groups to receive, now the TX RFE & AFE of all antenna transmit paths is all in closed condition.Until grouping finishes, return idle state.
Figure 11 is the flow chart of the 6th implementation method of multi-aerial receiver of the present invention.Wherein, in accepting state, also can, according to minimum required antenna reception number of path, only retain the RXRFE & AFE that opens specific antenna RX path, the RX RFE & AFE in all the other antenna reception paths closes.In addition, in idle state, also can be according to minimum required antenna reception number of path, the RX RFE & AFE that opens multiple antenna receptions path receives signal, and the RX RFE & AFE in all the other antenna reception paths closes.
For multi-antenna transmitting and receiving machine, the 7th kind of implementation method of the present invention is:
(1) enter at the beginning the first idle state: the RXRFE & AFE that only opens specific single antenna RX path, carrying out signal energy detects and grouping detection, the RX RFE & AFE in all the other antenna reception paths, and the TX RFE & AFE of all antenna transmit paths is all in closed condition.
(2) when at the first idle state, and while sending grouping, switch to transmission state: the TX RFE & AFE that only opens specific antenna transmit path, divide into groups to send, the TX RFE & AFE of all the other antenna transmit paths, and the RX RFE & AFE in all antenna receptions path is all in closed condition.While sending end Deng grouping, return the first idle state.
(3) when at the first idle state, and detect when signal energy exceedes the first critical value, just enter the second idle state: the RX RFE & AFE that opens all antenna receptions path, but the TX RFE & AFE of all antenna transmit paths, still in closed condition, proceeds signal energy and detects and grouping detection.
(4) when at the first idle state, and detect when grouping is come in, enter accepting state: open the RX RFE & AFE in all antenna receptions path, but the TX RFE & AFE of all antenna transmit paths is still in closed condition, divides into groups to receive.Until grouping finishes, return the first idle state.
(5) when at the second idle state, and when signal energy detected lower than the second critical value, just get back to the first idle state: the RX RFE & AFE that only retains specific single antenna RX path, close the RX RFE & AFE in all the other antenna reception paths, proceed signal energy and detect and grouping detection.
(6) when at the second idle state, and while sending grouping, switch to transmission state: the TX RFE & AFE that only opens specific antenna transmit path, divide into groups to send, the TX RFE & AFE of all the other antenna transmit paths, and the RX RFE & AFE in all antenna receptions path is all in closed condition.While sending end Deng grouping, return the first idle state.
(7) when at the second idle state, and detect when grouping is come in, just enter accepting state: open the RX RFE & AFE in all antenna receptions path, but the TX RFE & AFE of all antenna transmit paths is still in closed condition, divides into groups to receive.Until grouping finishes, return the first idle state.
Figure 12 is the flow chart of the 7th implementation method of multi-aerial receiver of the present invention.Wherein, in accepting state, also can, according to minimum required antenna reception number of path, only retain the RXRFE & AFE that opens specific antenna RX path, the RX RFE & AFE in all the other antenna reception paths closes.In addition, in idle state, also can be according to minimum required antenna reception number of path, the RX RFE & AFE that opens multiple antenna receptions path receives signal, and the RX RFE & AFE in all the other antenna reception paths closes.
For multi-antenna transmitting and receiving machine, the 8th kind of practice of the present invention is:
(1) enter at the beginning the first idle state: the RXRFE & AFE that only opens specific single antenna RX path, carrying out signal energy detects and grouping detection, the RX RFE & AFE in all the other antenna reception paths, and the TX RFE & AFE of all antenna transmit paths is all in closed condition.
(2) when at the first idle state, and system is will enter park mode time, enters resting state: close the RX RFE & AFE in all antenna receptions path and the TX RFE & AFE of all antenna transmit paths.Until while leaving park mode, return the first idle state.
(3) when at the first idle state, and while sending grouping, switch to transmission state: the TX RFE & AFE that only opens specific antenna transmit path, divide into groups to send, the TX RFE & AFE of all the other antenna transmit paths, and the RX RFE & AFE in all antenna receptions path is all in closed condition.While sending end Deng grouping, return the first idle state.
(4) when at the first idle state, and detect when signal energy exceedes the first critical value, just enter the second idle state: the RX RFE & AFE that opens all antenna receptions path, but the TX RFE & AFE of all antenna transmit paths, still in closed condition, proceeds signal energy and detects and grouping detection.
(5) when at the first idle state, and detect when grouping is come in, enter accepting state: open the RX RFE & AFE in all antenna receptions path, but the TX RFE & AFE of all antenna transmit paths is still in closed condition, divides into groups to receive.Until grouping finishes, return the first idle state.
(6) when at the second idle state, and system is will enter park mode time, enters resting state: close the RX RFE & AFE in all antenna receptions path and the TX RFE & AFE of all antenna transmit paths.Until while leaving park mode, return the first idle state.
(7) when at the second idle state, and when signal energy detected lower than the second critical value, just get back to the first idle state: the RX RFE & AFE that only retains specific single antenna RX path, close the RX RFE & AFE in all the other antenna reception paths, proceed signal energy and detect and grouping detection.
(8) when at the second idle state, and while sending grouping, switch to transmission state: the TX RFE & AFE that only opens specific antenna transmit path, divide into groups to send, the TX RFE & AFE of all the other antenna transmit paths, and the RX RFE & AFE in all antenna receptions path is all in closed condition.While sending end Deng grouping, return the first idle state.
(9) when at the second idle state, and detect when grouping is come in, just enter accepting state: open the RX RFE & AFE in all antenna receptions path, but the TX RFE & AFE of all antenna transmit paths is still in closed condition, divides into groups to receive.Until grouping finishes, return the first idle state.
Figure 13 is the flow chart of the 8th implementation method of multi-aerial receiver of the present invention.Wherein, in accepting state, also can, according to minimum required antenna reception number of path, only retain the RXRFE & AFE that opens specific antenna RX path, the RX RFE & AFE in all the other antenna reception paths closes.In addition, in idle state, also can be according to minimum required antenna reception number of path, the RX RFE & AFE that opens multiple antenna receptions path receives signal, and the RX RFE & AFE in all the other antenna reception paths closes.
Although technology contents of the present invention with preferred embodiment openly as above; so it is not in order to limit the present invention; anyly have the knack of this skill person; do not departing from spirit of the present invention a little change and the retouching done; all should be covered by category of the present invention, therefore protection scope of the present invention when depending on after the attached claim person of defining be as the criterion.

Claims (11)

1. a method of operation for multi-antenna receiving apparatus, is applicable to one and has in the multi-antenna receiving apparatus of N radio-frequency (RF) front-end circuit and analog front circuit, and described multi-antenna receiving apparatus has an idle mode and a receiving mode, and described method comprises:
In the time that described multi-antenna receiving apparatus operates in described idle mode, enable M radio-frequency (RF) front-end circuit and analog front circuit, and close (N-M) individual radio-frequency (RF) front-end circuit and analog front circuit to receive a Frame, and wherein, 1≤M<N; And
In the time that described multi-antenna receiving apparatus operates in described receiving mode, enable K radio-frequency (RF) front-end circuit and analog front circuit, and close (N-K) individual radio-frequency (RF) front-end circuit and analog front circuit with receiving data frames, and wherein, 1≤K<N.
2. the method for claim 1, wherein said multi-antenna receiving apparatus has a park mode, and in the time that described multi-antenna receiving apparatus operates in described park mode, closes N radio-frequency (RF) front-end circuit and analog front circuit.
3. the method for claim 1, wherein, in the time that described multi-antenna receiving apparatus operates in described idle mode, enables 1 radio-frequency (RF) front-end circuit and analog front circuit, and closes N-1 radio-frequency (RF) front-end circuit and analog front circuit with receiving data frames.
4. the method for claim 1, wherein said multi-antenna receiving apparatus is applied in a WLAN (wireless local area network) WLAN or a global intercommunication microwave access WiMAX or one the 4th generation 4G mobile phone communication system.
5. a multi-antenna receiving apparatus, has an idle mode and a receiving mode, and described multi-antenna receiving apparatus comprises:
N radio-frequency (RF) front-end circuit and analog front circuit, in order to receive a Frame to export at least one reception signal; And
One control circuit, is coupled to a described N radio-frequency (RF) front-end circuit and analog front circuit, in order to use number according to described reception signal to control one of a described N radio-frequency (RF) front-end circuit and analog front circuit;
Wherein, in the time that described in described reception signal indication, multi-antenna receiving apparatus operates in described idle mode, described control circuit enables M radio-frequency (RF) front-end circuit and analog front circuit, and close (N-M) individual radio-frequency (RF) front-end circuit and analog front circuit with receiving data frames, wherein, 1≤M<N; And in the time that described in described reception signal indication, multi-antenna receiving apparatus operates in described receiving mode, enable K radio-frequency (RF) front-end circuit and analog front circuit, and close (N-K) individual radio-frequency (RF) front-end circuit and analog front circuit with receiving data frames, wherein, 1≤K<N.
6. multi-antenna receiving apparatus as claimed in claim 5, wherein said multi-antenna receiving apparatus has a park mode, and in the time that described in described reception signal indication, receiving system operates in described park mode, described control circuit cuts out N radio-frequency (RF) front-end circuit and analog front circuit.
7. multi-antenna receiving apparatus as claimed in claim 5, wherein in the time that described multi-antenna receiving apparatus operates in described idle mode, described control circuit enables 1 radio-frequency (RF) front-end circuit and analog front circuit, and closes N-1 radio-frequency (RF) front-end circuit and analog front circuit with receiving data frames.
8. multi-antenna receiving apparatus as claimed in claim 5 is to be applied in a WLAN (wireless local area network) WLAN or a global intercommunication microwave access WiMAX or one the 4th generation 4G mobile phone communication system.
9. a multi-antenna receiving apparatus, in order to receive a Frame, described Frame comprises a preamble sequence, a stem sequence and a data sequence, and described receiving system comprises:
N radio-frequency (RF) front-end circuit and analog front circuit, in order to receive the radiofrequency signal from antenna, to export N radio frequency receiving signal;
One MIMO demodulating and decoding circuit, couples a described N radio-frequency (RF) front-end circuit and analog front circuit, in order to a described N radio frequency receiving signal is carried out to demodulating and decoding, to produce a demodulating and decoding signal; And
One sequence split circuit, is coupled to described MIMO demodulating and decoding circuit, described demodulating and decoding signal is separated to produce to stem sequence and the data sequence of described Frame; And
One control circuit, in order to control respectively enabling or closing of a described N radio-frequency (RF) front-end circuit and analog front circuit,
Wherein, described multi-antenna receiving apparatus has an idle mode and a receiving mode, in the time that described multi-antenna receiving apparatus operates in described idle mode, enable M radio-frequency (RF) front-end circuit and analog front circuit, and close (N-M) individual radio-frequency (RF) front-end circuit and analog front circuit to receive a Frame, wherein, 1≤M<N; And
In the time that described multi-antenna receiving apparatus operates in described receiving mode, enable K radio-frequency (RF) front-end circuit and analog front circuit, and close (N-K) individual radio-frequency (RF) front-end circuit and analog front circuit with receiving data frames, and wherein, 1≤K<N.
10. multi-antenna receiving apparatus as claimed in claim 9, wherein said multi-antenna receiving apparatus has a park mode, and in the time that described multi-antenna receiving apparatus operates in described park mode, described control circuit cuts out a described N radio-frequency (RF) front-end circuit and analog front circuit.
11. multi-antenna receiving apparatus as claimed in claim 9, wherein in the time that described multi-antenna receiving apparatus operates in described idle mode, described control circuit enables 1 radio-frequency (RF) front-end circuit and analog front circuit, and closes N-1 radio-frequency (RF) front-end circuit and analog front circuit to receive described Frame.
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