CN105656525B - A kind of multi-frequency multi-mode ultrahigh speed mimo wireless communication method and device - Google Patents

A kind of multi-frequency multi-mode ultrahigh speed mimo wireless communication method and device Download PDF

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CN105656525B
CN105656525B CN201410637687.XA CN201410637687A CN105656525B CN 105656525 B CN105656525 B CN 105656525B CN 201410637687 A CN201410637687 A CN 201410637687A CN 105656525 B CN105656525 B CN 105656525B
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signal
frequency
data
ieee
switch
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CN201410637687.XA
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CN105656525A (en
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姚雄生
张军
柏杨林
曹俊生
洪伟
江华
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江苏中兴微通信息科技有限公司
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Abstract

The invention discloses a kind of multi-frequency multi-mode ultrahigh speed mimo wireless communication method, the data frame of IEEE 802.3 is converted into the wireless data frame of IEEE 802.11 by transmitter according to the wireless communications mode of terminal request, and selects corresponding wireless network interface transmission data;For IEEE 802.11b/a/g/n/ac patterns, corresponding base band signal process and radio-frequency modulations are carried out to information source data, the maximum roads the N spatial flow signal of 2.4GHz or 5.8GHz frequency ranges is generated, passes through N number of antenna transmission data;For IEEE 802.11aj patterns, base band signal process is carried out to information source data and microwave frequency band is modulated, the maximum roads the N spatial flow signal of 45GHz frequency ranges is generated, passes through N number of antenna transmission data.Receiver carries out data receiver and demodulation using corresponding method.The present invention also provides the communication devices using the above method, the present invention can efficiently use the abundant frequency spectrum resource of millimeter wave, the data transmission throughput for greatly improving wireless communication system can support current 3 kinds of frequency ranges, the terminal of 6 kinds of pattern WIFI standards to access simultaneously.

Description

A kind of multi-frequency multi-mode ultrahigh speed mimo wireless communication method and device

Technical field

The invention belongs to the multi-frequency multi-mode ultrahigh speed multi input of wireless communication technology field, more particularly to WLAN is more Output(Multiple Input Multiple Output, MIMO)Communication means and device.

Background technology

The ultrahigh speed wireless local area network technology IEEE 802.11ac of low-frequency range 5.8GHz product currently on the market most Big channel width is 80MHz, and transmission rate is up to 1.3Gbps, and data throughput is up to 700Mbps, the technology realized at present And product can support two frequency ranges of 2.4GHz and 5.8GHz simultaneously, while support IEEE 802.11b, IEEE 802.11a, Five kinds of IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac patterns, but multi-channel video steaming transfer needs currently on the market The growing of the transmission rate of 1Gbps or more and the data traffic of intelligent terminal is wanted, new technology and method is needed to increase The data throughout of wireless access point or wireless base station.

Low-frequency range(Less than 6GHz)Wireless communication spectrum resource is increasingly rare, be widely used at present interference it is very serious, surpass The demand of high data transfer rates and the frequency resource of millimeter wave frequency band are very abundant so that millimeter wave frequency band ultrahigh speed without Line communication technology increasingly attracts attention, such as in December, 2013, and Ministry of Industry and Information ratifies 42.3 ~ 47GHz and 47.2 ~ 48.4GHz The frequency spectrum resource of total 5.9GHz is for ultrahigh speed wireless access and is not necessarily to radio license.

The present invention utilizes the millimeter wave 45GHz resources of frequency range, realization that can support 2.4GHz simultaneously(2400MHz~ 2483.5MHz)、5.8GHz(5.15GHz~5.85GHz)And 45GHz(42.3~47.0GHz、47.2GHz~48.4GHz)Three frequencies Section, at the same support IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac, The multi-frequency multi-mode ultrahigh speed MIMO wireless access point of six kinds of patterns of IEEE 802.11aj.The access point of realization can reach 3Gbps Above peak rate.

Invention content

Goal of the invention:Low-frequency range(Less than 6GHz)Wireless communication spectrum resource is increasingly rare, be widely used interference it is very big, System performance is seriously affected, or even cannot effectively be worked, the present invention efficiently uses the millimeter wave 45GHz resources of frequency range, and realization can be with It supports tri- frequency ranges of 2.4GHz, 5.8GHz and 45GHz simultaneously, while supporting IEEE 802.11b, IEEE 802.11a, IEEE The multi-frequency multi-mode ultrahigh speed MIMO of 802.11g, IEEE 802.11n, six kinds of IEEE 802.11ac, IEEE 802.11aj patterns Wireless access point efficiently uses the very abundant frequency resource of millimeter wave frequency band, realizes that the peak rate of wireless communication system can To reach 3Gbps or more, meet the growing of the data traffic of intelligent terminal and currently on the market forth generation mobile communication The passback of technology LTE base station and multi-channel video steaming transfer are up to the requirement of the transmission rate of 1Gbps or more.

Technical solution:For foregoing invention purpose, the present invention adopts the following technical scheme that:

A kind of multi-frequency multi-mode ultrahigh speed mimo wireless communication method, data sending step include:

The data frame of IEEE 802.3 is converted into IEEE by transmitter according to the wireless communications mode of premises equipment requests 802.11 wireless data frame, and select corresponding wireless network interface transmission data;

Wireless communications mode be IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n and When a kind of in IEEE 802.11ac, base band signal process and radio frequency tune are carried out according to corresponding wireless mode to information source data System generates the maximum roads the N spatial flow signal of 2.4GHz or 5.8GHz frequency ranges, passes through N number of radio-frequency antenna transmission data;

When wireless communications mode is IEEE 802.11aj, base band signal process and microwave frequency band tune are carried out to information source data System generates the maximum roads the N spatial flow signal of 45GHz frequency ranges, passes through N number of microwave frequency band antenna transmission data;

Data reception step includes:

Receiver carries out after the spatial flow signal that N number of radio-frequency antenna receives the maximum roads N 2.4GHz or 5.8GHz frequency range Radio demodulating and base band signal process restore the information source data that transmitter is sent;

Receiver carries out microwave after the spatial flow signal that N number of microwave frequency band antenna receives the maximum roads N 45GHz frequency ranges Frequency range demodulation base band signal process restores the information source data that transmitter is sent;

The wireless data frame of IEEE 802.11 is converted into the data frame of IEEE 802.3 by receiver, and data frame is turned It is sent to Ethernet interface;

Above-mentioned N is the natural number more than or equal to 1.

Further, described that base band signal process and radio-frequency modulations are carried out to information source data, generate 2.4GHz or 5.8GHz The roads the N spatial flow signal of frequency range, the specific steps by N number of radio-frequency antenna transmission data include:

Information source data are encoded successively, are modulated, spatial spread and digital simulation signal conversion processes, generate N roadbeds Band analog signal;

It will be successively amplified per road base-band analog signal, I/Q modulation and small-power are amplified, generation 2.4GHz or 5.8GHz Differential signal;

It will be converted into single-ended 50 ohmage signal per the matching of road differential signal, then be exported to phase after being filtered and amplifying The transmitting terminal for the RF switch answered exports to respective antenna from the antenna connection terminal of RF switch, passes through antenna transmission data;

The receiver after the spatial flow signal that N number of radio-frequency antenna receives the maximum roads N 2.4GHz or 5.8GHz frequency range, Radio demodulating and base band signal process are carried out, the specific steps for restoring the information source data that transmitter is sent include:

2.4GHz the or 5.8GHz signals of every road RF switch output are subjected to wideband low noise amplification, output to duplexer Isolate 2.4GHz and 5.8GHz single-ended signals;

The matching per road single-ended signal will be converted into differential signal, then will be carried out defeated after radiofrequency signal amplification, I/Q demodulations amplification Go out base-band analog signal;

Base-band analog signal is carried out to analog and digital signal conversion, mimo channel estimation, mimo channel equilibrium, demodulation successively It is handled with decoding, restores the information source data that transmitter is sent.

Further, described that base band signal process and microwave frequency band modulation are carried out to information source data, generate 45GHz frequency ranges The maximum roads N spatial flow signal, the specific steps by N number of microwave frequency band antenna transmission data include:

Information source data are encoded successively, are modulated, spatial spread and digital simulation signal conversion processes, generate N roadbeds Band analog signal;

It will be successively filtered per road base-band analog signal, variable gain amplification and I/Q modulation, and generate 45GHz frequency ranges Microwave signal, microwave signal carry out signal amplification output to the transmitting terminal of corresponding RF switch, connect from the antenna of RF switch End output is connect to respective antenna, passes through antenna transmission data;

The receiver carries out after the spatial flow signal that N number of microwave frequency band antenna receives the maximum roads N 45GHz frequency ranges Microwave frequency band demodulation base band signal process, the specific steps for restoring the information source data that transmitter is sent include:

The 45GHz signals that every road RF switch exports are subjected to low noise amplification, variable gain amplification and I/Q solutions successively Tune obtains analog baseband signal, then the I/Q two paths of signals of analog baseband signal is carried out variable gain amplification and filtering respectively;

Analog baseband signal is carried out to analog and digital signal conversion, mimo channel estimation, mimo channel equilibrium, demodulation successively It is handled with decoding, restores the information source data that transmitter is sent.

A kind of device using above-mentioned multi-frequency multi-mode ultrahigh speed mimo wireless communication method, including a gigabit networking processing Device, the gigabit networking processor include the first PCIE interfaces, the 2nd PCIE interfaces and at least two gigabit ethernet interfaces, institute State the first PCIE interfaces connection 2.4GHz/5.8GHz dual-band radio transceivers, the 2nd PCIE interfaces connection 45GHz frequencies Section radio receiving-transmitting unit;

The gigabit networking processor further includes:

Bridge modules are connect respectively with gigabit ethernet interface and PCIE interfaces, for managing gigabit ethernet interface pair The corresponding wireless network interface of Ethernet interface and PCIE interfaces answered, and be according to progress data link layer with the MAC Address of network interface Data forwarding and transmission;

Protocol conversion module is connect with bridge modules, for realizing 802.11 wireless protocols of IEEE and IEEE 802.3 with Conversion too between fidonetFido, and transformed data are exported to bridge modules.

Further, the 2.4GHz/5.8GHz dual-band radios transceiver includes:Baseband signal processor and base The small signal RF transceiver of band signal processor connection, and the radio-frequency front-end that is connect with small signal RF transceiver;

The radio-frequency front-end has the roads N receiving-transmitting chain, includes that 5.8GHz transmission channels, 2.4GHz transmittings are logical per road receiving-transmitting chain Road, broadband 2.4GHz/5.8GHz receiving channels and a RF switch;One RF switch is connect with a dual-mode antenna;

The input terminal of the 5.8GHz transmission channels is connect with the output end of the transmitter of small signal RF transceiver, is used In the differential signal of 5.8GHz is converted into single-ended signal, and export to the first transmitting terminal of RF switch;

The input terminal of the 2.4GHz transmission channels is connect with the output end of the transmitter of small signal RF transceiver, is used In the differential signal of 2.4GHz is converted into single-ended signal, and export to the second transmitting terminal of RF switch;

The input terminal of the broadband 2.4GHz/5.8GHz receiving channels and the output end of RF switch connect, and being used for will The single-ended signal of the 2.4GHz or 5.8GHz of RF switch output are detached, and are converted into differential signal respectively and are exported to small letter The receiver of number RF transceiver;

The switch control signal input terminal of RF switch and the switch control signal output end of baseband processor connect.

Further, the 45GHz frequency ranges radio receiving-transmitting unit includes:Baseband signal processor and 45GHz radio-frequency receiving-transmittings Letter machine;

The baseband signal processor exports N roadbed band signals;The 45GHz RF transceivers include the roads N transmitting-receiving chain Road, a frequency source and a power splitter include a transmission channel, a receiving channel and a radio frequency per road receiving-transmitting chain Switch;The input terminal of the output end of the frequency source and power splitter connects, and power splitter includes at least 2N output end, respectively with hair The I/Q modulators penetrated on channel are connected with the i/q demodulator in receiving channel;The input terminal and baseband signal of the transmission channel The connection of output end all the way of processor, microwave signal and output to radio frequency for converting baseband signals into 45GHz frequency ranges are opened The transmitting terminal of pass;The input terminal of the receiving channel and the output end of RF switch connect, for believing the microwave of 45GHz frequency ranges It number is converted into baseband signal and exports to baseband signal processor;One RF switch is connect with a dual-mode antenna.

Advantageous effect:Compared with prior art, the present invention efficiently uses the very abundant frequency resource of millimeter wave frequency band, pole The earth increases the data transmission throughput of wireless communication system, and 2.4GHz/5.8GHz Base Band Unit uses IEEE 802.11ac skills Art specification, 45GHz use IEEE 802.11aj technical specifications, transmit the peak rate of the wireless communication system of three road spatial flows 3Gbps or more can be increased to.It can support IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE Six kinds of 802.11n, IEEE 802.11ac, IEEE 802.11aj patterns, the terminal of all WIFI of good compatible existing market Equipment accesses.

Description of the drawings

Fig. 1 is the schematic diagram of mimo wireless communication network;

Fig. 2 is the principle of the present invention schematic diagram;

Fig. 3 is 2.4/5.8GHz radio-frequency front-end schematic diagrames in Fig. 2;

Fig. 4 is 45GHz RF transceiver schematic diagrames in Fig. 2;

Fig. 5 is the method for the present invention embodiment overview flow chart;

Fig. 6 is apparatus of the present invention example structure schematic diagram;

Fig. 7 is network processing unit data process method schematic diagram;

Fig. 8 is radio protocol stack functional block diagram.

Specific implementation mode

The present invention can be used for a variety of system of broadband wireless communication, and the example of this communication system includes tdd mode millimeter Wave wireless MIMO communication system etc..

The method of the present invention may be implemented in a variety of wired or wireless communication devices, be realized according to the method in the present invention Radio node may include access point or user terminal.

Access point(Access Point, AP)It may include, be implemented as or be base station transceiver, central station, base It stands, transceiver function, wireless router, transceiver, basic service set(Basic Service Set, BSS), extension clothes Business collection(Extended Service Set, ESS)Or certain other terms.

User terminal(User Terminal, UT)It may include, be implemented as or be access terminal, remote station, use Family station, subscriber unit, movement station, user terminal, user apparatus, user equipment or certain other terms.In certain realization methods In, access terminal may include having phone, mobile phone, computer of wireless connection capability etc..

As shown in Figure 1, the multiple-access MIMO system with access point and user terminal.At the time of any given, access point It can be communicated on the downlink and uplink with one or more user terminals.Downlink be from access point to The communication link of family terminal, uplink are the communication links from user terminal to access point.User terminal can also with it is another User terminal communicates point-to-pointly.System access controller is connected to access point, and is provided to access point and coordinate and control.

Wireless MIMO communication system is tdd mode system, and for TDD system, downlink and uplink are shared identical Frequency band.

Access point is the receiver for the transmitter of downlink and for uplink.User terminal is to be directed to downlink The receiver of link and transmitter for uplink." transmitter " is can be sent out by wireless channel as used in this article It is the dress for the independent operation that data can be received by wireless channel to send the device or equipment of the independent operation of data, " receiver " It sets or equipment.

As shown in Figure 2,3, 4, the invention discloses the principles of multi-frequency multi-mode ultrahigh speed mimo wireless communication method and device Schematic diagram.Such as Fig. 5, a kind of multi-frequency multi-mode ultrahigh speed mimo wireless communication method disclosed by the embodiments of the present invention, including following step Suddenly:

(1)The network processing unit of transmitter is according to the wireless communications modes of premises equipment requests, by the number of IEEE 802.3 It is converted into the wireless data frame of IEEE 802.11 according to frame, and selects corresponding wireless network interface transmission data.

Wherein, the data process method of network processing unit is as shown in fig. 7, the network processing unit of transmitter can be by wired ether Bridge is added in network interface and wireless network interface, using the bridging technology of bridge realize it is wireless and wired between, it is wireless and wireless between with And it is wired and wired between data high-speed forwarding and transmission.Bridge is also known as Bridge, passes through the bridge joint between port so that mutually Between data transmission work in data link layer, and be according to the forwarding and transmission for carrying out data with MAC Address.

Network protocol stack refers to the general name of each layer protocol in network, reflects the process sum number of a data transmission in network According to forwarding followed rule and foundation, TCP, udp protocol such as transportation level, the IP agreement of network layer, the Ethernet of link layer Agreement, MAC etc..The prior art can support IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE simultaneously The consensus standard of five kinds of patterns is used two frequencies of 2.4GHz and 5.8GHz by five kinds of patterns of 802.11n and IEEE 802.11ac Section, from the same wireless network interface transmission data.Network processing unit is by integrating IEEE 802.11aj agreements in the method for the present invention Stack, using 45GHz frequency ranges from high-speed radio network interface transmission data.

As shown in figure 8, IEEE 802.11a/b/g/n/ac protocol stacks are needed when receiving the frame for needing to send to data Frame carries out some radio characteristics additions, and the data frame of IEEE 802.3 is converted into the wireless data frame of IEEE 802.11, turns It is put into the transmit queue of network interface card.

Wherein radio characteristics contain:

1) Protocol Version:(protocol version) is usually 0

2) Type:Frame type, data frame: 10

3) Subtype:The format of the subtype of further judgment frame, different types of this field of data frame is different 's

3.1) IBSS frames

3.1.1) 0000: Data

3.1.2) 0010: Null

3.2) From AP frames

3.2.1) 0000: Data

3.2.2) 1000: Data+CF+ASK

3.2.3) 0100: Data+CF+Poll

3.2.4) 1100: Data+CF+ACK+CF+Poll

3.2.5) 1010: CF+ACK

3.2.6) 0110: CF+Poll

3.2.7) 1110: ACK+CF+Poll

3.3) To AP frames

3.3.1) 0000: Data

3.3.2) 1000: Data+CF+ACK

3.3.3) 0010: Null

3.3.4) 1010: CF+ACK(no data)

3.4) WDS frames

4) To DS:When showing whether the frame is the frame that BSS is sent to DS

4.1) IBSS:It is set as 0

4.2) To AP:It is set as 1

4.3) From AP:It is set as 0

4.4) WDS:It is set as 1

5) From DS:When showing whether the frame is the frame that DS is sent to BSS

5.1) IBSS:It is set as 0

5.2) To AP:It is set as 0

5.3) From AP:It is set as 1

5.4) WDS:It is set as 1

6) More Fragment:For illustrating the case where long frame is segmented, if also have other frames, if there is then The value is set as 1

7) Retry (retransmitting domain):Indicate that the segmentation is the repeating transmission frame of precedent transmission segmentation.

8) Power Management:After indicating transmission frame, powder source management mode used by standing

8.1) it is 1:STA is in power_save patterns

8.2) it is 0:STA is in active patterns

9) More Data:In indicating that many frame buffers are arrived at a station.At least STA is sent to there are one data frame It is arranged to 1.

10) Protected Frame:It indicates according to WEP (Wired Equivalent Privacy) algorithm to frame master Body is encrypted.If body section includes to cover processed data by key, it is set as 1, is otherwise provided as 0

11) Order (sequence number field):When long frame is segmented and transmits, which is set as 1 expression recipient should be in strict accordance with The sequential processes frame, is otherwise provided as 0

IEEE 802.11aj protocol stacks are on the basis of IEEE802.11a/b/g/n/ac protocol stacks according to IEEE 802.11aj protocol contents are modified.Main difference has the length of the service data unit field of media access control layer, The length of aggregated service data unit field, modification dynamic bandwidth mechanism support 540MHz or 1080MHz channel widths.

(2)Wireless communications mode is IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n When with a kind of in IEEE 802.11ac, base band signal process and radio frequency are carried out according to corresponding wireless mode to information source data Modulation generates the maximum roads the N spatial flow signal of 2.4GHz or 5.8GHz frequency ranges, passes through N number of radio-frequency antenna transmission data.(Here 5 Planting the corresponding radio frequency band of communication pattern is:IEEE802.11b, IEEE802.11g are 2.4GHz;IEEE802.11a 、 IEEE802.11ac is 5.8GHz;IEEE802.11n is 2.4GHz or 5.8GHz).Specific steps include:

(2.1)Information source data are encoded successively, are modulated, spatial spread and digital simulation signal conversion processes, generate N Road base-band analog signal;

(2.2)To be successively amplified per road base-band analog signal, I/Q modulation and small-power amplification, generate 2.4GHz or The differential signal of 5.8GHz;

(2.3)The matching per road differential signal will be converted into single-ended 50 ohmage signal, then after being filtered and amplifying it is defeated Go out to the transmitting terminal of corresponding RF switch, exports to respective antenna from the antenna connection terminal of RF switch, sent out by antenna Send data.

(3)When wireless communications mode is IEEE 802.11aj, base band signal process and microwave frequency band are carried out to information source data Modulation generates the maximum roads the N spatial flow signal of 45GHz frequency ranges, passes through N number of microwave frequency band antenna transmission data.Specific steps packet It includes:

(3.1)Information source data are encoded successively, are modulated, spatial spread and digital simulation signal conversion processes, generate N Road base-band analog signal;

(3.2)It will be successively filtered per road base-band analog signal, variable gain amplification and I/Q are modulated, generation 45GHz frequencies The microwave signal of section, microwave signal carry out signal amplification output to the transmitting terminal of corresponding RF switch, from the day of RF switch Line connecting pin is exported to respective antenna, passes through antenna transmission data;

(4)Receiver after the spatial flow signal that N number of radio-frequency antenna receives the maximum roads N 2.4GHz or 5.8GHz frequency range, Radio demodulating and base band signal process are carried out, the information source data that transmitter is sent are restored.Specific steps include:

(4.1)2.4GHz the or 5.8GHz signals of every road RF switch output are subjected to wideband low noise amplification, output is extremely Diplexer separates go out 2.4GHz and 5.8GHz single-ended signals;

(4.2)The matching per road single-ended signal will be converted into differential signal, then carry out radiofrequency signal amplification, I/Q demodulations are put Base-band analog signal is exported after big;

(4.3)Base-band analog signal is carried out to analog and digital signal conversion successively, mimo channel is estimated, mimo channel is equal Weighing apparatus, demodulation decoding processing, restore the information source data that transmitter is sent.

(5)Receiver carries out micro- after the spatial flow signal that N number of microwave frequency band antenna receives the maximum roads N 45GHz frequency ranges Wave frequency section demodulation base band signal process restores the information source data that transmitter is sent.Specific steps include:

(5.1)By every road RF switch export 45GHz signals carry out successively low noise amplification, variable gain amplification and After I/Q demodulation, then the I/Q two paths of signals of analog baseband signal is subjected to variable gain amplification and filtering respectively;

(5.2)Analog baseband signal is carried out to analog and digital signal conversion successively, mimo channel is estimated, mimo channel is equal Weighing apparatus, demodulation decoding processing, restore the information source data that transmitter is sent.

(6)The wireless data frame of IEEE 802.11 is converted into the data of IEEE 802.3 by the network processing unit of receiver Frame, and data frame is forwarded to Ethernet interface.

As shown in figure 8, after network processing unit receives data, it is first sent to corresponding radio protocol stack.Radio protocol stack After carrying out related legitimate inspection to data frame, wireless protocols frame head and again addition foundation IEEE802.3 are then removed The Ethernet frame head of encapsulation, finally uploads to network protocol stack.Network protocol stack is by the advanced row net of the wireless network interface of bridge member The MAC forwarding-table items of bridge are inquired, and then carry out the data single broadcasting in bridge group or broadcast transmission according to query result.

When IEEE 802.11a/b/g/n/ac protocol stacks receive frame, need to carry out type judgement to frame, if received Be that data frame needs to carry out some radio characteristics verifications to the 802.11 frame head portions IEEE of data frame, and by IEEE 802.11 Source address and destination address in frame copy to the corresponding source address in packet header and destination address of Ethernet, and by transformed number Next layer protocol stack is put into according to frame to be handled;If what is received is not data frame, according to type as defined in agreement to non- Data frame, which is done, to be handled accordingly and sends corresponding state;Non-data frame contains management frame and control frame, wherein management frame Include Association request again(Association request)、Association response(Associated response)、 Reassociation request(Again association request)、Reassociation response(Again associated response)、 Probe request(Probe requests thereby)、Probe response(Probe response)、Beacon(Beacon)、ATIM(Notification transmission refers to Show message)、Disassociation(Cancel association)、Authentication(Authentication)And Deauthentication (Release authentication)Deng;Control frame includes Power Save again(PS)- Poll(Power saving-poll)、RTS(Request is sent)、 CTS(Clear to send)、ACK(Confirm)、CF-End(Uncontended periods terminate)And CF-End(Uncontended periods terminate)+ CF- ACK(Uncontended periods confirm)Deng.

IEEE 802.11aj protocol stacks are on the basis of IEEE802.11a/b/g/n/ac protocol stacks according to IEEE 802.11aj protocol contents are modified.

As shown in fig. 6, that the embodiment of the invention discloses a kind of is wireless using the multi-frequency multi-mode ultrahigh speed MIMO of the above method Communication device, including a gigabit networking processor, there are two high-speed PCI E interface, a PCIE interfaces for gigabit networking processor Connect 2.4GHz/5.8GHz dual-band radio transceivers;Another PCIE interface connect 45GHz frequency ranges IEEE802.11aj without Line transceiver.In order to match the rate of radio port, also at least there are two gigabit ethernet interfaces for gigabit networking processor.Thousand Million network processing units further include:For managing the corresponding Ethernet interface of gigabit ethernet interface and the corresponding wireless network of PCIE interfaces Mouthful, and be the bridge modules according to the data forwarding and transmission for carrying out data link layer with the MAC Address of network interface;And for real Conversion between existing 802.3 Ethernet protocol of 802.11 wireless protocols of IEEE and IEEE, and by transformed data export to Bridge modules carry out the protocol conversion module of the data transmission between Ethernet interface and wireless network interface by bridge modules.

Wherein, 2.4GHz/5.8GHz dual-band radios transceiver includes baseband signal processor, the transmitting-receiving of small signal RF Letter machine and radio-frequency front-end.

The transmission channel processing of baseband signal processor be information source data are encoded, are modulated, spatial spread, digital mould The processing such as quasi- signal conversion, receiving channel processing includes analog and digital signal conversion, mimo channel is estimated, mimo channel is balanced, The processing such as demodulation, decoding.

The transmitter of small signal RF transceiver is that the base-band analog signal for exporting baseband processor passes through amplification, I/ Q modulation, small-power amplification output small-power radiofrequency signal.

The receiver of small signal RF transceiver is to export base band mould after receiving radiofrequency signal amplification, I/Q demodulation, amplification Quasi- signal is to baseband processor.

Radio-frequency front-end has the roads N receiving-transmitting chain, includes 5.8GHz transmission channels per road receiving-transmitting chain, 2.4GHz transmission channels, Broadband 2.4GHz/5.8GHz receiving channels and a RF switch.

As shown in figure 3,5.8GHz transmission channels include 5.8GHz transmittings matching and differential-to-single-ended circuit, filter and work( Rate amplifier, 5.8GHz transmission channels believe difference after receiving the differential output signal of the 5.8GHz of small signal RF transceiver Number matching is converted into single-ended 50 ohmage signal, and connection filter carries out spurious signal and filters out, then input power amplifier Signal amplification is carried out, power amplifier output signal connects the ends TX1 of RF switch.2.4GHz transmission channels include 2.4GHz hairs Matching and differential-to-single-ended circuit, filter and power amplifier are penetrated, 2.4GHz transmission channels receive small signal RF transmitting-receiving letter Differential signal matching is converted into single-ended 50 ohmage signal after the differential output signal of the 2.4GHz of machine, connection filter into Row spurious signal filters out, and then input power amplifier carries out signal amplification, and power amplifier output signal connects RF switch The ends TX2.Broadband 2.4GHz/5.8GHz receiving channels include 5.8GHz transmittings matching and single-ended transfer difference circuit, 2.4GHz Transmitting matching and single-ended transfer difference circuit, duplexer and wideband low noise amplifier, broadband 2.4GHz/5.8GHz receiving channels Wideband low noise amplifier receive RF switch output 2.4GHz or 5.8GHz signals carry out low noise amplification, then input Diplexer separates go out 2.4GHz and 5.8GHz signals, and 2.4GHz signal single-ended transfer difference signals input small signal RF transmitting-receiving letter Machine, 5.8GHz signal single-ended transfer difference signals input small signal RF transceiver.It is used herein as a wide-band channel, is received With the signal of processing 2.4GHz or 5.8GHz, cost can be effectively saved.The switch that RF switch is exported according to baseband processor Control signal control antenna port is switched in 2.4GHz transmitting terminals, 5.8GHz transmitting terminals, 2.4GHz/5.8GHz receiving terminals.

2.4GHz/5.8GHz radio-frequency front-ends have the roads N receiving-transmitting chain, maximum that can transmit the roads N spatial flow signal.

45GHz frequency range radio receiving-transmitting units include baseband signal processor and 45GHz RF transceivers.

Baseband signal processor includes media access control unit, transmitter baseband signal processing unit, receiver machine base Band signal processing unit, controller, digital analog converter and analog-digital converter.Transmitter baseband signal processing unit root According to 45GHz wireless channel transmission characteristics be information source data encoded, modulated, spatial spread, digital analogue signal conversion etc. Processing generates the roads N baseband output signal, at most transmits the roads N spatial flow signal.Receiver baseband signal processing unit includes simulation Digital signal is converted and is estimated according to the mimo channel of 45GHz wireless channel transmission characteristics design, mimo channel is balanced, solution The processing such as tune, decoding recover the information source data of transmitter transmission.

As shown in figure 4,45GHz RF transceivers are using the single-conversion scheme directly modulated and directly demodulated, including N Road receiving-transmitting chain and a frequency source(The optional 45GHz/4 frequency ranges of frequency of local oscillator, 4 frequency multipliers of connection externally provide frequency source), Frequency source is converted into the output of the roads 2N by power splitter and the receiving-transmitting chain frequency conversion of the roads N is supplied to use, and includes one per road receiving-transmitting chain Transmission channel, a receiving channel and a RF switch, it is logical that a RF switch connect wherein transmitting with a dual-mode antenna Road receives the I/Q two-way analog baseband signals post filtering of digital analog converter output, variable gain amplification and then input I/Q Modulator, I/Q modulators export the microwave signal of 45GHz frequency ranges, and then input power amplifier carries out signal amplification, and power is put The ends TX of big device output signal connection RF switch.The 45GHz signals that receiving channel receives RF switch output first carry out low noise Sound amplifies, and then inputs variable gain amplifier and is amplified, and the output of variable gain amplifier connects the defeated of i/q demodulator Enter, the radiofrequency signal of 45GHz is down-converted to analog baseband signal by i/q demodulator, and the I/Q two paths of signals of output carries out respectively can Variable-gain amplification, filtering.

The roads the N receiving-transmitting chain maximum of 45GHz RF transceivers can transmit the roads N spatial flow signal.

WIFI baseband processor and the optional Qualcomm of RF transceiver in Fig. 2(Qualcomm)QCA9882 or high Logical company QCA9880's or company of Botong (Broadcom) BCM4352, the optional Qualcomm of network processing unit(Qualcomm) IPQ8068.

4 large-scale F PGA of Xilinx can be used in 45GHz frequency ranges IEEE 802.11aj Base-Band Processings and media control Virtex6 is realized.

The above is only a preferred embodiment of the present invention, for those skilled in the art, exist Without departing from the principles of the invention, any modification, equivalent replacement, improvement and so on also should be regarded as the protection model of the present invention It encloses.

Claims (2)

1. a kind of multi-frequency multi-mode ultrahigh speed mimo wireless communication method, it is characterised in that:The data of the communication means send step Suddenly include:
The data frame of IEEE 802.3 is converted into IEEE by transmitter according to the wireless communications mode of premises equipment requests 802.11 wireless data frame, and select corresponding wireless network interface transmission data;
Wireless communications mode is IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n and IEEE When a kind of in 802.11ac, base band signal process and radio-frequency modulations, production are carried out according to corresponding wireless mode to information source data The maximum roads the N spatial flow signal of raw 2.4GHz or 5.8GHz frequency ranges, passes through N number of radio-frequency antenna transmission data;Including:By information source number According to encoded, modulated successively, spatial spread and digital simulation signal conversion processes, generate the roads N base-band analog signal;It will be per road Base-band analog signal is amplified successively, I/Q modulation and small-power are amplified, and generates the differential signal of 2.4GHz or 5.8GHz;It will It is converted into single-ended 50 ohmage signal per the matching of road differential signal, then exports to corresponding radio frequency and opens after being filtered and amplifying The transmitting terminal of pass exports to respective antenna from the antenna connection terminal of RF switch, passes through antenna transmission data;
When wireless communications mode is IEEE 802.11aj, base band signal process is carried out to information source data and microwave frequency band is modulated, production The maximum roads the N spatial flow signal of raw 45GHz frequency ranges, passes through N number of microwave frequency band antenna transmission data;Including:By information source data according to It is secondary encoded, modulated, spatial spread and digital simulation signal conversion processes, generate the roads N base-band analog signal;It will be per roadbed band Analog signal is filtered successively, variable gain amplification and I/Q modulation, generates the microwave signal of 45GHz frequency ranges, microwave signal into The amplification output of row signal is exported from the antenna connection terminal of RF switch to respective day to the transmitting terminal of corresponding RF switch Line passes through antenna transmission data;
Data reception step includes:
Receiver carries out radio frequency after the spatial flow signal that N number of radio-frequency antenna receives the maximum roads N 2.4GHz or 5.8GHz frequency range Demodulation base band signal process restores the information source data that transmitter is sent;Including:By every road RF switch output 2.4GHz or 5.8GHz signals carry out wideband low noise amplification, and output to diplexer separates goes out 2.4GHz and 5.8GHz single-ended signals;It will be per road Single-ended signal matching is converted into differential signal, then carries out output baseband analog letter after radiofrequency signal amplification, I/Q demodulations amplification Number;Base-band analog signal is carried out to analog and digital signal conversion successively, mimo channel is estimated, mimo channel is balanced, demodulation is translated Code processing restores the information source data that transmitter is sent;
Receiver carries out microwave frequency band after the spatial flow signal that N number of microwave frequency band antenna receives the maximum roads N 45GHz frequency ranges Demodulation base band signal process restores the information source data that transmitter is sent;Including:By the 45GHz letters of every road RF switch output Low noise amplification, variable gain amplification and I/Q are carried out number successively and demodulates to obtain analog baseband signal, then by analog baseband signal I/Q two paths of signals carry out variable gain amplification and filtering respectively;Analog baseband signal is carried out to analog and digital signal successively to turn It changes, mimo channel is estimated, mimo channel is balanced, demodulation decoding processing, the information source data that recovery transmitter is sent;
The wireless data frame of IEEE 802.11 is converted into the data frame of IEEE 802.3 by receiver, and data frame is forwarded to Ethernet interface;
Above-mentioned N is the natural number more than or equal to 1.
2. a kind of device using multi-frequency multi-mode ultrahigh speed mimo wireless communication method according to claim 1, feature exists In, an including gigabit networking processor, the gigabit networking processor includes the first PCIE interfaces, the 2nd PCIE interfaces and extremely Few two gigabit ethernet interfaces, the first PCIE interfaces connect 2.4GHz/5.8GHz dual-band radio transceivers, described 2nd PCIE interfaces connect 45GHz frequency range radio receiving-transmitting units;
The gigabit networking processor further includes:
Bridge modules are connect with gigabit ethernet interface and PCIE interfaces respectively, corresponding for managing gigabit ethernet interface Ethernet interface and the corresponding wireless network interface of PCIE interfaces, and be according to the data for carrying out data link layer with the MAC Address of network interface Forwarding and transmission;
Protocol conversion module is connect with bridge modules, for realizing 802.11 wireless protocols of IEEE and 802.3 Ethernets of IEEE Conversion between agreement, and transformed data are exported to bridge modules;
The 2.4GHz/5.8GHz dual-band radios transceiver includes baseband signal processor, connects with baseband signal processor The small signal RF transceiver connect, and the radio-frequency front-end that is connect with small signal RF transceiver;The radio-frequency front-end has N Road receiving-transmitting chain includes 5.8GHz transmission channels, 2.4GHz transmission channels, broadband 2.4GHz/5.8GHz per road receiving-transmitting chain Receiving channel and a RF switch;One RF switch is connect with a dual-mode antenna;
The input terminal of the 5.8GHz transmission channels is connect with the output end of the transmitter of small signal RF transceiver, and being used for will The differential signal of 5.8GHz is converted into single-ended signal, and exports to the first transmitting terminal of RF switch;
The input terminal of the 2.4GHz transmission channels is connect with the output end of the transmitter of small signal RF transceiver, and being used for will The differential signal of 2.4GHz is converted into single-ended signal, and exports to the second transmitting terminal of RF switch;
The input terminal of the broadband 2.4GHz/5.8GHz receiving channels and the output end of RF switch connect, and are used for radio frequency The 2.4GHz or the single-ended signal of 5.8GHz for switching output are detached, and are converted into differential signal respectively and export to small signal to penetrate The receiver of frequency transceiver;
The switch control signal input terminal of RF switch and the switch control signal output end of baseband processor connect;
The 45GHz frequency ranges radio receiving-transmitting unit includes baseband signal processor and 45GHz RF transceivers;The base band letter Number processor exports N roadbed band signals;The 45GHz RF transceivers include the roads N receiving-transmitting chain, a frequency source and one Power splitter includes a transmission channel, a receiving channel and a RF switch per road receiving-transmitting chain;The frequency source it is defeated The input terminal of outlet and power splitter connect, power splitter include at least 2N output end, respectively with the I/Q modulators on transmission channel It is connected with the i/q demodulator in receiving channel;The input terminal of the transmission channel and the output end all the way of baseband signal processor It connects, the microwave signal for converting baseband signals into 45GHz frequency ranges is simultaneously exported to the transmitting terminal of RF switch;The reception The input terminal in channel and the output end of RF switch connect, for the microwave signal of 45GHz frequency ranges to be converted into baseband signal simultaneously It exports to baseband signal processor;One RF switch is connect with a dual-mode antenna.
CN201410637687.XA 2014-11-12 2014-11-12 A kind of multi-frequency multi-mode ultrahigh speed mimo wireless communication method and device CN105656525B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101453319A (en) * 2007-11-29 2009-06-10 北京中电华大电子设计有限责任公司 USB interface wireless network card compatible with multiple security standards
CN102448191A (en) * 2011-11-16 2012-05-09 上海大亚科技有限公司 EOC terminal equipment capable of realizing WIFI (Wireless Fidelity) function
CN103384940A (en) * 2013-01-08 2013-11-06 华为技术有限公司 Device for return?transmission networking

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050067677A (en) * 2003-12-29 2005-07-05 삼성전자주식회사 Apparatus and method for delivering data between wireless and wired network
US8175459B2 (en) * 2007-10-12 2012-05-08 Corning Cable Systems Llc Hybrid wireless/wired RoF transponder and hybrid RoF communication system using same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101453319A (en) * 2007-11-29 2009-06-10 北京中电华大电子设计有限责任公司 USB interface wireless network card compatible with multiple security standards
CN102448191A (en) * 2011-11-16 2012-05-09 上海大亚科技有限公司 EOC terminal equipment capable of realizing WIFI (Wireless Fidelity) function
CN103384940A (en) * 2013-01-08 2013-11-06 华为技术有限公司 Device for return?transmission networking

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