CN103281711B - A kind of short-distance wireless broadband connections method and system - Google Patents
A kind of short-distance wireless broadband connections method and system Download PDFInfo
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Abstract
The invention provides a kind of short-distance wireless wide-band communication system, application and the short-distance wireless broadband connections under indoor environment, including a net control device, at least one picture pick-up device and multiple communication terminal.Wherein Interior Space is imaged by picture pick-up device, and spatial image is sent to net control device, and net control device estimates coordinate and the spatial information of veil on communication terminal coordinate and communication link thereof, and communication terminal adjusts its wave beam forming according to above-mentioned information.Correspondingly, a kind of method that the invention also discloses short-distance wireless broadband connections.Application technical scheme contributes to communication terminal and realizes wave beam forming fast, accurately, and the adjustment to wave beam forming is dynamic realtime.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of short-distance wireless broadband connections method and short-distance wireless wide-band communication system.
Background technology
Short-distance wireless broadband connections is the novel wireless communication technology recently becoming study hotspot, and its carrying frequency range is from 30GHz to 300GHz, and it is 45GHz and 60GHz that two of which is believed to become the frequency range of typical case's application in future.The propagation wavelength of short-distance wireless broadband connections is from 10 millimeters to 1 millimeters, and therefore short-distance wireless broadband connections is also generally equivalently referred to as millimetre-wave attenuator.The advantage of short distance broadband wireless communications is: 1, available band is the widest.2, high directivity, good confidentiality；3, interference is the least, is little affected by the impact of atmospheric interference and industrial interference, thus communication is stable.But also just because of above-mentioned characteristic, the millimeter wave propagation in space is similar to light wave, it is the narrowest that it propagates wave beam, and cannot penetrate barrier；The typical application scenarios of short-distance wireless broadband connections is indoor environment.Meanwhile, antenna system many employings aerial array of millimetre-wave attenuator and beamforming technique, enable wave beam according to assigned direction along sighting distance or along reflection path get around barrier arrive receiving terminal.
During conventional art realizes, the wave beam forming in radio communication needs to set up between dual-mode antenna array the communication link of optimum through adaptive interative computation, this typically by communication terminal complicated signal search from realizing.And it is subjected to displacement along with communication terminal or time communication link is blocked, need to readjust aerial array, complete wave beam forming, and it is the most time-consuming for being adaptively adjusted aerial array and complete wave beam forming setting up millimetre-wave attenuator link, additionally, other equipment communicated likely can be interfered in large-scale sector-level search procedure by wave beam forming.Being greatly increased due to antenna number in millimeter-wave communication system, the problems referred to above especially highlight.
Such as Figure 1A, when 1B, 1C describe under indoor environment with millimeter wave transmission HD video, communication link is subjected to the situation shielded in various degree.
The patent of Publication No. CN101867401 " a kind of block the 60GHz multiaerial system and signal processing method thereof hidden " i.e. provides a kind of method adjusting wave beam forming in the case of known to veil information.Visible if able to quickly, accurately know the information hiding situation in communication terminal present position and communication link, omit large-scale sector-level search procedure, helping antenna array beam rapid alignment, it is helpful that link is set up in millimetre-wave attenuator sending and receiving end by undoubtedly.But this patent does not discloses how or receives, transmission equipment and the information of veil position, thus is incomplete.Under outdoor scene, communication terminal can utilize the GPS module self configured to obtain positional information, has assisted wave beam forming, but the faintest for indoor environment Satellite navigation signal, and location cannot realize.In addition, some Research Literatures are pointed out to record terminal positional information by being pre-configured with, but this kind of method can not be suitable for when producing displacement for terminal or veil.
Summary of the invention
In view of this, present invention aim at providing a kind of short-distance wireless broadband connections method and short-distance wireless wide-band communication system, use supplementary means to obtain and hide information on the position coordinates of communication terminal and communication link, communication terminal thus adjust the wave beam forming of aerial array, optimize the foundation of communication link and maintenance process.
The present invention proposes a kind of short-distance wireless broadband connections method, comprises the steps:
S101, communication terminal adds grid, and to network registry；Net control device in system confirms that this communication terminal adds and completes the registration of this communication terminal.
S102, is taken pictures, and the interior space image of shooting is sent to net control device in indoor by picture pick-up device.
S103, net control device analyzing and processing spatial image, calculate veil coordinate and veil spatial information in communication terminal position coordinates and link, the communication terminal above-mentioned coordinate and information being sent on communication link.
S104, communication terminal, according to coordinate information and veil spatial information, adjusts beam direction, carries out wave beam forming, set up or safeguard communication link.
Above-mentioned S102-S104 step is cycle repetition at regular intervals.
In S104 step, due to communication terminal know its coordinate of veil and spatial information on the communication link, its wave beam forming can start search in the sector-level of little scope and make fine adjustment；In the case of accurate information, even can directly carry out wave beam level orientation.During if it find that link is completely obscured, the most directly omitting the beamforming process of this link, the routing node using other instead sets up link.
For further, in S103 step, net control device is in addition to sending coordinate and screen information to communication terminal, also sends the control signaling of short-distance wireless broadband connections to communication terminal.Engineering compares and fits through LF communication (such as Wi-Fi) and send above-mentioned information.
The present invention proposes a kind of short-distance wireless wide-band communication system simultaneously, has a net control device, one or more picture pick-up device and multiple communication terminal, wherein in system:
Containing computing module and LF communication module on net control device,
Computing module estimates coordinate position and the spatial form of object of indoor each object according to the interior space image of shooting；
Coordinate and the spatial information of veil on the coordinate of communication terminal and the communication link of this communication terminal are sent to communication terminal by LF communication module, 2.4GHz or the 5GHz communication module of concrete LF communication module such as Wi-Fi, in addition to sending above-mentioned coordinate information, between communication terminal and net control device, also transmit communication terminal log-on message and the control signaling of other control short-distance wireless broadband connections.
Indoor environment is periodically taken pictures by picture pick-up device, and sends the interior space image of shooting to net control device.
Further, when there being multiple picture pick-up device, these picture pick-up devices are distributed in the diverse location of indoor, from multi-angled shooting image so that be supplied to net control device and estimate that the indoor coordinate of object, shape are more accurate.
Containing carrying out millimetre-wave attenuator between millimetre-wave attenuator module, and other communication terminal on communication terminal.
Further, if this communication terminal is as a transmission signalling arrangement, then also include wave beam forming module and LF communication module,
Wave beam forming module carries out wave beam forming according to the communication terminal coordinate received and screen coordinate and spatial information；
LF communication module receives coordinate and the veil spatial form information coming from net control device, and other controls the control signaling of short-distance wireless broadband connections, and completes the registration of access network.
By above technical characteristic it can be seen that compared with prior art, the present invention at least has the advantage that 1. contribute to communication terminal and realize wave beam forming fast, accurately；2. net control device and picture pick-up device can contribute to communication terminal adjust aerial array in real time with dynamically processing images.
Accompanying drawing explanation
Figure 1A is that link is without covering schematic diagram；
Figure 1B is that link slightly hides schematic diagram；
Fig. 1 C is that link severe hides schematic diagram.
Fig. 2 is that system forms schematic diagram；
Fig. 3 is net control device schematic diagram；
Fig. 4 A is communication terminal schematic diagram (hotspot device)；
Fig. 4 B is communication terminal schematic diagram (intelligent terminal)；
Fig. 5 is method flow schematic diagram.
Embodiment
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Such as Figure 1A, 1B, 1C describe and use short-distance wireless broadband communication link to meet with the situation of difference shielding in indoor environment.Figure 1A is the link realizing the highly desirable appearance of short-distance wireless broadband connections between communication terminal, and under conditions of not having veil, the best mode of signal launched by communication terminal is that beam direction is directly directed at reception terminal, thus obtains the data rate of maximum；Figure 1B is situation about slightly covering, and its preferred emission mode is to adjust beam shaping orientation angle, and diffraction arrives and receives terminal；Fig. 1 C is severe or completely obscured situation, and it launches optimal way is to change communication node, is communication terminal service through other routes.
Embodiment
1
As in figure 2 it is shown, the invention provides a kind of short-distance wireless wide-band communication system, including a net control device, one or more picture pick-up device and multiple communication terminal.
Capture apparatus is for shooting the image in whole room, thus obtains on communication terminal device and communication link the spatial images such as the position of veil, shape, and is sent to net control device.
Although Fig. 2 does not draw, but preferably can be deployed with multiple capture apparatus in indoor and be arranged on diverse location, so can from different perspectives indoor environment be shot.
It should be noted that in indoor environment, the wave beam forming between communication terminal is mainly based on azimuth search, if therefore only one of which picture pick-up device, preferably it is installed in top, room, obtains the azimuth position information between terminal unit.
Net control device receives the spatial image that capture apparatus is transmitted, and then estimates coordinate position and the spatial form of object of indoor each object.Owing to the communication terminal in network is the most all registered after access network in net control device.Net control device can know indoor each communication terminal and the position of indoor veil and spatial information distinctively.
In Project Realization, transmitting often by wired mode between net control device and picture pick-up device, reason is that the said equipment is arranged on fixed position under normal circumstances, high and transmit reliable with wired mode transmission bandwidth.
Specifically in Project Realization, net control device is that initial point sets up cartesian coordinate system with certain position (the capture apparatus position as in figure), calculate the coordinate of other equipment, acquired communication terminal position coordinates and veil position coordinates, shape information are sent to communication terminal by LF communication modes such as WI-FI, adjust aerial array in order to subsidiary communications terminal, carry out wave beam forming.
As can be seen here, as it is shown on figure 3, monitoring device at least includes computing module and low frequency module: computing module is for calculating communication terminal and the coordinate position of veil and spatial information.Low frequency module communicates for low frequency (such as 2.4GHz or 5GHz of Wi-Fi), in addition to transmission coordinate position, in engineering, the most often transmission controls signaling, such as in order to set up and to coordinate millimetre-wave attenuator link, or the control information relevant to multi-antenna transmission, such as information such as pre-coding matrix, modulation and coded systems, above-mentioned information, to adjusting multiple antennas link transmission, improves link-quality and also functions to effect.
Communication terminal includes the physical entity that two classes are concrete in actual applications: hotspot device or user terminal.Focus arranges the equipment being to send millimeter-wave signal, it is provided that service signal source；And user terminal is the equipment receiving millimeter-wave signal, common such as smart mobile phone, with the display screen of millimetre-wave attenuator, intelligent appliance etc..Certainly, the difference of above-mentioned physical entity is probably the fuzzyyest, and such as some intelligent terminal has been provided simultaneously with sending the ability of millimeter-wave signal, the most both may be regarded as being that user terminal also may be regarded as being hotspot device.
As shown in Figure 4 A, the communication terminal as hotspot device has low frequency module, wave beam forming module and millimetre-wave attenuator module.
Low frequency module is used for LF communication (such as 2.4GHz or 5GHz of Wi-Fi), it is possible to receives and comes from co-ordinate position information and the control signaling that net control device sends；Wave beam forming module is according to the communication terminal coordinate position received, coordinate position including hotspot device self, and the coordinate position of its user terminal serviced, and in communication link, the coordinate position of veil and shape information determine the direction of wave beam forming；Millimetre-wave attenuator module sends millimeter-wave signal, and beam direction is determined by wave beam forming module.
As shown in Figure 4 B, the communication terminal as user terminal has millimetre-wave attenuator module, in order to receive millimeter-wave signal.
Communication terminal as user terminal can also have low frequency module, in order to register to net control device when access network.Certainly user terminal can also be registered by other interface, and here is omitted.
Embodiment
2
The present invention proposes a kind of method of short-distance wireless broadband connections simultaneously, and its flow process is as shown in Figure 5.Comprise the steps:
Step A201, communication terminal joins in short-distance wireless broadband network, registers its ID to net control device, and this ID is unique mark that communication terminal works in a network.
Specifically, this communication terminal can be the hotspot device sending millimeter-wave signal, it is also possible to be the user terminal receiving millimeter-wave signal, or is provided simultaneously with sending and receiving the user terminal of millimeter-wave signal.
Preferably, communication terminal carries out ID registration by LF communication communication (such as 2.4GHz or 5GHz of Wi-Fi) to net control device, and monitor the control signaling from net control device, this signaling includes the signaling setting up and deleting millimetre-wave attenuator link, and configuration multi-antenna transmission precoding codebook, modulating-coding instruction etc. optimize the signaling of millimetre-wave attenuator link.
Step A202, the spatial image that picture pick-up device shooting is indoor, and send an image to net control device.
Step A203, the position coordinates of net control device calculating communication terminal and its communication link covers position coordinates and the shape information of object, and above-mentioned information is passed to communication terminal.
First net control device needs, through image procossing, to distinguish the communication terminal in image and veil.Generally can carry out acquisition terminal apparatus characteristic information according to the handshake between communication terminal, confirmation communication terminal mates with this communication terminal ID's.
Step A204, communication terminal receives position coordinates and the veil information that net control device is sent, carries out wave beam forming, set up communication link.This step can be divided into following several situation:
Situation A. is in the case of communication link is unsheltered, such as (hotspot device sends large data files to smart mobile phone) communication link in Figure 1A, communication terminal 1 directly can calculate, according to the position coordinates of communication terminal 2, angle of radiation and the gain size that antenna array beam needs to adjust, directly carry out the search of accurate wave beam level, calibration, advantage of this is that the data rate being greatly improved link, decrease the interference to the communication terminal that other are communicating simultaneously.
Situation B. is in the case of communication link slightly covers, such as (hotspot device sends HD video to display screen) communication link in Figure 1B, communication terminal 1 removes unnecessary beam radiation angles according to mask information, wave beam is adjusted to can be with the direction of avoiding obstacles, carry out the sector-level search of range shorter, calibration, and then carry out beam-forming, thus set up communication link with communication terminal 2.
Situation C. is in the case of communication link seriously covers, such as (between hotspot device and display screen by many people walk up and down interference) communication link in Fig. 1 C, it is routing node (being used as relaying) that communication terminal 1 changes the equipment of being network controlled, uplink beam is adjusted according to its position coordinates, carry out wave beam level search and calibration, equally, net control device also is able to adjust downlink wave beam according to the position coordinates of display screen, carry out wave beam level search and calibration, thus set up and be network controlled the equipment communication link to display screen.It is to be noted that net control device also possesses communication function and the wave beam forming function having millimeter wave in the present embodiment.
During practical communication, the circulation of step A202-A204 is carried out.Thus net control device can dynamically capture wireless environment variation, communication terminal also is able to, according to the spatial positional information updated, adjust wave beam in real time.
Under the support of more excellent hardware and software, net control device can have the intelligent coordinated function of millimeter wave link route.Still consider scene shown in Fig. 1 C, net control device no longer using self as via node, but Intelligent routing authorize other communication terminal as via node, the coordination of this route allows for whole indoor short-distance wireless broadband network situation and plans, ensureing that the route in whole network is more reasonable, the load of each hotspot device more equalizes.Similarly, the network equipment can send route test signaling by LF communication mode to communication terminal.
Additionally, the control message of other millimeter wave multi-antenna transmission can also be sent to communication terminal by LF communication by net control device, to optimize link performance further, the pre-coding matrix of the control message such as multiple antennas sent, modulation and coded system etc..
More preferably, multiple picture pick-up device can be equipped with to provide spatial image more comprehensively at indoor diverse location.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
1. a short-distance wireless wide-band communication system, is applied to indoor environment, it is characterised in that include a net control device, more than one picture pick-up device and two or more communication terminal, wherein:
Indoor environment is taken pictures by picture pick-up device, and sends the interior space image of shooting to net control device；
Net control device estimates position coordinates and the shape information of veil on communication terminal position coordinates and communication link thereof according to the interior space image received, and sends to communication terminal；
Communication terminal, according to net control device transmitted information, adjusts the wave beam forming of multiple antennas as follows, transmits millimetre-wave attenuator signal；
Mode one, in the case of communication link is without covering, described wave beam forming module directly carries out the search of accurate wave beam level, calibration to described target communications terminal；
Mode two, in the case of communication link slightly covers, described wave beam forming module removes unnecessary beam radiation angles according to mask information, carries out the sector-level search of range shorter, calibration；
Mode three, in the case of communication link seriously covers or be completely obscured, changes routing node, and described wave beam forming module carries out wave beam level search, calibration to new routing node.
Short-distance wireless wide-band communication system the most according to claim 1, it is characterised in that described net control device has farther included computing module and LF communication module, wherein
Computing module receives described interior space image, and estimates position coordinates and the shape information of veil on communication terminal position coordinates and communication link thereof；
LF communication module is Wi-Fi 2.4G communication module or 5GHz communication module, sends position coordinates and the shape information of veil on described communication terminal position coordinates and communication link thereof to communication terminal.
Short-distance wireless wide-band communication system the most according to claim 2, it is characterised in that
Described LF communication module transmits the control signaling of the control millimetre-wave attenuator of communication terminal log-on message and the transmission of described net control device further.
Short-distance wireless wide-band communication system the most according to claim 1, it is characterised in that
If described communication terminal is the equipment sending millimeter-wave signal, then farther include millimetre-wave attenuator module, wave beam forming module and LF communication module, wherein:
Millimetre-wave attenuator module launches millimeter-wave signal to target communications terminal, and the beam direction of signal is determined by wave beam forming module.
The information that wave beam forming module sends according to described net control device determines wave beam forming；
LF communication module receives described net control device transmitted information, and completes to register access network to net control device.
Short-distance wireless wide-band communication system the most according to claim 1, it is characterised in that
In the case of communication link seriously covers or be completely obscured, described net control device is that described communication terminal selects transistroute, and is sent to described communication terminal by described low frequency module by new routing node.
6. a short-distance wireless broadband connections method, is applied to indoor environment, it is characterised in that including:
Communication terminal adds network, registers to net control device；
Indoor environment is periodically taken pictures by picture pick-up device, and sends the spatial image of shooting to net control device,
Net control device analysis space image, estimates position coordinates and the spatial information of veil on the position coordinates of communication terminal and communication link thereof, and sends to communication terminal；
Communication terminal, according to the position coordinates of target communications terminal and veil position coordinates and spatial information, adjusts wave beam forming direction, including following manner,
Mode one, in the case of communication link is without covering, directly carries out the search of accurate wave beam level, calibration to described target communications terminal；
Mode two, in the case of communication link slightly covers, removes unnecessary beam radiation angles according to mask information, carries out the sector-level search of range shorter, calibration；
Mode three, in the case of communication link seriously covers or be completely obscured, changes routing node, carries out wave beam level search, calibration to new routing node；
Communication terminal is set up and safeguards communication link.
Short-distance wireless broadband connections method the most according to claim 6, it is characterised in that
Net control device also sends the control signaling of millimetre-wave attenuator to communication terminal.
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| CN104242996B (en) * | 2013-06-21 | 2018-08-03 | 中兴通讯股份有限公司 | A kind of method, system and device for establishing communication link |
| CN104661321A (en) * | 2013-11-15 | 2015-05-27 | 中兴通讯股份有限公司 | Communication link management method, equipment and system |
| US9811915B2 (en) | 2015-08-24 | 2017-11-07 | Huawei Technologies Co., Ltd. | Integration of image/video pattern recognition in traffic engineering |
| CN105871669B (en) * | 2016-03-30 | 2019-08-16 | 美的集团股份有限公司 | The method and device of household electrical appliances distribution, household electrical appliance |
| CN106452541B (en) * | 2016-07-19 | 2020-01-07 | 北京邮电大学 | Beam forming method and device with mutual assistance of light and wireless signals |
| CN107172592B (en) * | 2017-03-20 | 2020-05-26 | 联想(北京)有限公司 | Indoor positioning method and mobile equipment |
| CN108777849B (en) * | 2018-04-12 | 2020-06-19 | 北京邮电大学 | Indoor mirror virtual relay layout method and device |
| KR102604991B1 (en) | 2019-04-02 | 2023-11-23 | 삼성전자 주식회사 | Electronic device for controlling beam based on data obtained by a camera and method for the same |
| CN113965874B (en) * | 2020-07-03 | 2023-04-07 | 大唐移动通信设备有限公司 | Wave beam forming signal sending method and base station equipment |
| CN111818452B (en) * | 2020-07-08 | 2023-02-21 | 河南软金通信科技有限公司 | Terminal positioning method, device, equipment and storage medium |
| CN112788614B (en) * | 2021-01-13 | 2023-04-07 | 上海闻泰信息技术有限公司 | Beamforming method and apparatus, beamforming system, and computer storage medium |
| CN112788613B (en) * | 2021-01-13 | 2023-04-25 | 上海闻泰信息技术有限公司 | Beam forming method and device, communication equipment, electronic terminal and storage medium |
| CN116264478A (en) * | 2021-12-14 | 2023-06-16 | 展讯半导体(南京)有限公司 | Beam scanning method and device and computer readable storage medium |
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