CN112165357A - Access scheduling system for multiple users of optical base station and operation process thereof - Google Patents
Access scheduling system for multiple users of optical base station and operation process thereof Download PDFInfo
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- CN112165357A CN112165357A CN202011047065.3A CN202011047065A CN112165357A CN 112165357 A CN112165357 A CN 112165357A CN 202011047065 A CN202011047065 A CN 202011047065A CN 112165357 A CN112165357 A CN 112165357A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
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Abstract
The invention discloses an access scheduling system for multiple users of an optical base station and an operation process thereof, comprising a communication base station and a plurality of user clients, wherein a first communication light emitter and a second communication light emitter are arranged in the communication base station, a first light emitting head is fixedly connected on the first communication light emitter, a second light emitting head is connected on the second communication light emitter, a third communication light emitter is arranged in the user client, and a third light emitting head is arranged on the third communication light emitter. Then the individual user client communicates with the communication base station by means of QAM, OFDM and the like in time slot, therefore, the data can be rapidly transmitted by using a large bandwidth, and the data security can be effectively improved by using the directivity of optical communication.
Description
Technical Field
The invention relates to the technical field of optical communication, in particular to an access scheduling system for multiple users of an optical base station and an operation flow thereof.
Background
The visible light communication technology is a wireless light communication technology based on an illumination light source, and has no electromagnetic interference and an illumination effect, so that the visible light communication technology can be conveniently applied to certain fields, for example, radio frequency communication can be replaced in occasions where electromagnetic interference is strictly limited, such as airports, hospitals and the like. When the visible light communication base station transmits optical signals to a plurality of users, the visible light communication base station generally adopts an overlay type diffusion broadcasting mode to transmit the optical signals, different frequency bands are utilized to transmit data to different user clients, however, the light of the different frequency bands interferes with each other, the data transmission efficiency is influenced, and when the number of the accessed users is large and the communication requirements are met, the base station reduces the communication rate for ensuring the access number of the most users. However, the data transmission amount between different user clients is different, so that more idle time exists, idle bandwidth is wasted, and the transmission effect of partial data is reduced. Therefore, an access scheduling system for multiple users of an optical base station and an operation flow thereof are provided.
Disclosure of Invention
The present invention is directed to an access scheduling system for multiple users in an optical base station and an operation procedure thereof, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an access dispatch system for multi-user of optical base station and operation flow thereof, includes communication base station and a plurality of user's customer end, communication base station's inside is equipped with two backup pads, and the side of going up of two backup pads rotates respectively and is connected with first carousel and second carousel, first carousel passes through the second motor drive rotation with the second carousel, the side fixedly connected with of going up of first carousel is used for the first communication light emitter with divergent form transmission light, the side fixedly connected with second communication light emitter that goes up of second carousel, adjust the light path direction through adjustment mechanism on the second communication light emitter, user's customer end's inside is equipped with the third communication light emitter.
Preferably, the side walls of the communication base station and the user client are respectively provided with a transparent glass layer for light to pass through, and the communication base station and the user client are respectively provided with a photoelectric plate for receiving light and converting the light into an electric signal.
Preferably, adjustment mechanism includes support, first spout, slide bar, swiveling wheel, turbine, dwang, second spout, first motor, synchronizing shaft and articulated elements, the support is fixed on the second carousel, slide bar sliding connection is in the inside of first spout and second spout simultaneously, the both ends sliding connection of slide bar is in the inside of turbine, first motor drive swiveling wheel rotates.
Preferably, be equipped with clutch between second carousel and the first communication light emitter, clutch includes two gear pieces, and two gear pieces are fixed connection respectively on the lateral wall of second carousel and first communication light emitter, fixedly connected with electric putter on the lateral wall of backup pad, electric putter's output shaft tip fixedly connected with mount pad, it is connected with the removal gear to rotate on the mount pad, removal gear and two gear piece swing joint.
Preferably, a ring block with a U-shaped cross section is fixedly connected to the upper side face of the supporting plate, a plurality of fixing bolts are connected to the side wall of the first rotating disc in a meshed mode, the inner ends of the fixing bolts slide in grooves of the ring block to enable the first rotating disc to rotate on the supporting plate, and the rotating mode of the second rotating disc is the same as that of the first rotating disc.
Preferably, the adjusting mechanism comprises an adjusting frame arranged on the second turntable, the adjusting frame drives two trusses through two adjusting motors respectively, a lens sleeve is sleeved on the two trusses in an orthogonal mode in a sliding mode, and a direction-changing lens for changing the direction of the light path is arranged on the lens sleeve;
and a lens group for adjusting the light diffusion range of the first communication light emitter is mounted on the first turntable.
An operation flow of an access scheduling system for multiple users of an optical base station, the operation of the system comprises the following flows:
s1, the communication base station and the user client are initialized,
s2, the communication base station sends the undifferentiated authentication data D1 in a diffusion form,
s3, the user client receives the authentication data D1,
s4, the user client end sends message data D2 to the communication base stationN，
S5, the communication base station receives the message data D2NAnd the data is summarized,
s6, the communication base station processes and calculates the data to obtain the distribution data information D3,
s7, the communication base station sends the distribution data information D3 in a diffusion form,
s8, the user client end obtains the distribution data information D3,
s9, the user client analyzes the distribution data information D3 to obtain the time period T for communication connection with the communication base stationN，
S10, the communication base station and each user client according to the time period T divided in the distribution data information D3NThe communication of the data is carried out,
s11, the communication base station and the user client are initialized.
Preferably, the message data D2NAt least including the ID of the user client, the communication data length and the time check bit.
Preferably, the message data D2NThe method also comprises coordinate data of the position of the user client.
Preferably, the communication base station and the user client communicate through visible light carriers, and the communication base station and the user client in S2, S7 communicate by modulating data in the form of OOK, and the communication base station and the user client in S10 communicate in the mode of QAM, OFDM.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention carries out diffusion type propagation of optical signals through the first communication optical transmitter, so that the laser of the first communication optical transmitter is projected on the photoelectric board of each user client, the communication message information is used for communication registration of which users need to communicate, and the carrier light emitted by the light emitting head is projected onto a photoelectric board of a communication base station to realize that the users feed back communication message information of whether to communicate or not and the communication volume to the base station, and the amount of data required for this communication base station to make inquiries to all user clients is very small, the data modulation modes with strong anti-interference and high fault-tolerant rate such as OOK can be adopted for transmitting data in a large range, the message data volume replied by the user client is small, therefore, different user clients can simultaneously communicate by adopting lights with different wave band frequencies, so that the communication base station can collect message information of all online user clients as soon as possible and carry out summary analysis; then, when the base station and the user client are communicated independently, because the optical interference among a plurality of user clients is eliminated, the modes such as QAM, OFDM and the like can be adopted to fully utilize the bandwidth under the full-band frequency, and data transmission with large load capacity is carried out, thereby being beneficial to the independent communication between the base station and the user clients.
2. After the first rotating disc is driven to rotate by the second motor, the first communication light emitter can rotate 360 degrees, and therefore the range of the diffusion broadcast can be wider.
3. According to the invention, the light path of the second communication light emitter is horizontally rotated through the rotation of the second turntable, and the first motor drives the rotating wheel to rotate after being started, at the moment, the sliding rod slides upwards or downwards in the first sliding groove through the turbine to promote the sliding rod to drive the rotating rod to rotate, and the light path of the second communication light emitter rotates upwards or downwards through the hinge, so that the second communication light emitter can be accurately projected on the photoelectric board on each user client, and one-to-one optical signal transmission between the base station and the user is facilitated.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an exploded cross-sectional view of the communication base station of the present invention;
FIG. 3 is a schematic cross-sectional view of a first and a second light-emitting head according to the present invention;
FIG. 4 is an enlarged view taken at A of FIG. 3 in accordance with the present invention;
FIG. 5 is a schematic structural diagram of the first turntable, the second turntable and the second motor according to the present invention;
FIG. 6 is a schematic structural diagram I of a second turntable, a second communication light emitter and an adjusting mechanism according to the present invention;
fig. 7 is a schematic structural diagram II of a second turntable, a second communication light emitter and an adjusting mechanism according to the present invention;
fig. 8 is an exploded view of the second rotating disk, the first communication light emitter and the clutch device of the present invention;
FIG. 9 is an exploded cross-sectional view of the support plate, first turntable, ring block and anchor bolt of the present invention;
fig. 10 is a cross-sectional view of a user client, a third communications light emitter and a third light emitting head of the present invention;
FIG. 11 is a second block diagram of the adjustment mechanism of the present invention;
FIG. 12 is a second cross-sectional mounting configuration of the adjustment mechanism of the present invention;
FIG. 13 is a schematic view of a lens assembly mounting structure according to the present invention.
In the figure: 1. communication base station, 2, user client, 3, support plate, 4, first rotating disc, 5, second rotating disc, 6, first communication light emitter, 601, first light emitter, 7, second communication light emitter, 701, second light emitter, 8, adjusting mechanism, 801, bracket, 802, first sliding chute, 803, sliding bar, 804, rotating wheel, 805, turbine, 806, rotating bar, 807, second sliding chute, 808, first motor, 809, synchronizing shaft, 8010, hinge, 8-1, adjusting frame, 8-2, adjusting motor, 8-3, truss, 8-4, lens sleeve, 8-5, turning lens, 9, third communication light emitter, 901, third light emitter, 10, second motor, 11, glass layer, 12, photoelectric plate, 13, clutch device, 1301, gear block, 1302, electric push rod, 1304, mounting base, gear block, electric push rod, mounting base, and electric power source, The light source comprises a movable gear, 14, a ring block, 15, a fixing bolt, 16, a driving gear, 17, a telescopic lead wire, 18, a connecting rod, 19, a bottom plate, 20, a lens group, GXf, a region range of light emitted by a first light emitting head, GX1, a light path of light emitted by the first light emitting head, GX2, a light path of light emitted by a second light emitting head, GX3 and a light path of light emitted by a third light emitting head.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-13, the present invention provides a technical solution: an access scheduling system for multiple users of an optical base station and an operation process thereof comprise a communication base station 1 and multiple user clients 2, wherein the user clients 2 are connected with external data terminals (such as cameras, multimedia terminals and data hard disks) according to practical application scenes, the bottoms of the communication base station 1 and the user clients 2 are provided with a bottom plate 19 as shown in figure 1, four feet of the bottom plate 19 are provided with screw holes for fixing the communication base station 1 and the multiple user clients 2, the communication base station 1 and the user clients 2 are provided with box covers (fixed by screws), the box covers are opened to facilitate the installation and maintenance of components inside the communication base station 1 and the user clients 2, the communication base station 1 is internally provided with two support plates 3, the upper side surfaces of the two support plates 3 are respectively and rotatably connected with a first rotary disc 4 and a second rotary disc 5, the first rotary disc 4 and the second rotary disc 5 are driven to rotate by a second motor 10, as shown in fig. 2-3, the second motor 10 is fixedly connected to the communication base station 1, a driving gear 16 is fixedly connected to a middle position of a lower side surface of the first rotary disk 4, the driving gear 16 is fixedly connected to an output shaft of the second motor 10, when the second motor 10 is started, the output shaft of the second motor 10 drives the driving gear 16 to rotate, so as to realize the rotation of the first rotary disk 4, in addition, the second motor 10 is a stepping motor, when the second motor 10 is started, the output shaft thereof can rotate in forward and reverse directions, so as to drive the first rotary disk 4 to swing in forward and reverse directions (the maximum rotation amplitude of the first rotary disk 4 can be 360), so as to facilitate the connection of electronic components (such as the first communication light emitter 6 mentioned below) on the first rotary disk 4 with an external circuit, the upper side surface of the first rotary disk 4 is fixedly connected with the first communication light emitter 6 for, the first communication light emitter 6 is fixedly connected with a first light emitting head 601, the first communication light emitter 6 is a device for converting an electric signal into an optical signal (the electric signal is a CPU calculation code, and then a driving circuit is used for driving a light emitter to perform frequency band selection, the communication light emitter can be a light source such as an LED (light emitting diode) and a laser) (hereinafter, the second communication light emitter 7 and the third communication light emitter 9 have the same action), the first communication light emitter 6 emits a light signal for establishing communication with a user client, the data load mode of the laser can adopt an OOK (on-off keying) mode, the data load is small, but the anti-interference is strong, the error rate is low, the basic registration communication between the communication base station 1 and the user client 2 is favorably established, the second communication light emitter 7 is connected to the upper side of the second turntable 5, and the optical path is, a third communication light emitter 9 is arranged inside the user client 2, a third light emitter 901 is arranged on the third communication light emitter 9, the third light emitter 901 is connected with the third communication light emitter 9 through a connecting rod 18, the lower end of the connecting rod 18 is fixed on the third communication light emitter 9, the upper end of the connecting rod 18 is connected with the third light emitter 901 through a fastening bolt, the fastening bolt can adjust the angle of the third light emitter 901 and then fix the third light emitter, in addition, a telescopic lead 17 is additionally arranged between the third light emitter 901 and the third communication light emitter 9 for realizing the electric connection of the third light emitter and the third communication light emitter (as shown in figure 10), the communication light emitted by the third light emitter 901 provides feedback communication signals and data bidirectional communication for the communication base station 1, for example, whether communication is needed, the amount of communication traffic is large, when communication is carried out, data batch transmission is carried out, when the second communication light emitter 7 is, the optical signals sent by the second communication optical transmitter 7 and the third communication optical transmitter 9 may adopt modulation modes such as QAM and OFDM that make full use of bandwidth, which can establish data communication with high load capacity, and can transmit data to a single user in large batches (interference between multiple users is easy to occur when high load is performed at the same time).
Specifically, the side walls of the communication base station 1 and the user client 2 are respectively provided with a transparent glass layer 11 to allow light to pass through, the communication base station 1 and the user client 2 are respectively provided with a photoelectric plate 12 for receiving light and converting the light into an electric signal, the photoelectric plate 12 can receive an optical signal, and the photoelectric plate 12 can convert the optical signal into the electric signal, so as to obtain data.
In order to adjust the angle of the second light emitting head 701 on the second light emitting device 7 up and down, specifically, the adjusting mechanism 8 includes a support 801, a first sliding slot 802, a sliding rod 803, a rotating wheel 804, a worm 805, a rotating rod 806, a second sliding slot 807, a first motor 808, a synchronizing shaft 809 and a hinge 8010, as shown in fig. 6, the hinge 8010 is disposed between the second light emitting head 701 and the second light emitting device 7 (disposed at the front side) so that the second light emitting head 701 rotates through the hinge 8010, and a telescopic wire 17 is additionally disposed between the second light emitting head 701 and the second light emitting device 7 for electrically connecting the two (as shown in fig. 6), the support 801 is fixed on the second rotating disc 5, the sliding rod 803 is slidably connected inside the first sliding slot 802 and the second sliding slot 807 at the same time, as shown in fig. 7, the first sliding slot 802 and the second sliding slot 807 are respectively opened on the side walls of the support 801 and the support 806, the rotating rod 806 is fixedly connected to the second light emitting head 701, when the sliding rod 803 slides upwards or downwards inside the first sliding slot 802, the sliding rod 803 slides inside the second sliding slot 807 and drives the rotating rod 806 to rotate, and then the second light emitting head 701 rotates upwards or downwards through the hinge 8010, so as to change the angle of the laser light emitted by the second light emitting head 701, two ends of the sliding rod 803 are slidably connected inside the worm wheel 805, the first motor 808 drives the rotating wheel 804 to rotate, in order to ensure that the sliding rod 803 slides smoothly, the two rotating wheels 804 and the worm wheel 805 are additionally provided to support two ends of the sliding rod 803, when the rotating wheel 804 rotates with the worm wheel 805, two ends of the sliding rod 803 respectively slide on the two worm wheels 805, and as the sliding rod 803 slides inside the worm wheel 805, the height of the sliding rod 803 changes and changes precisely, so that the laser light emitted by the second light emitting head 701 can be projected onto the photovoltaic panel 12 on the user client 2 precisely, in order to synchronously drive the two rotating wheels 804 to rotate, the synchronizing shaft 809 is rotatably connected to the bracket 801, and two ends of the synchronizing shaft 809 are respectively engaged with the two rotating wheels 804, so that when the first motor 808 drives the synchronizing shaft 809 to rotate, the two rotating wheels 804 synchronously rotate, and the first motor 808 is fixedly mounted on the bracket 801.
As shown in fig. 4 and 8, in order to rotate the second rotating disc 5 and then drive the second light emitting head 701 to horizontally rotate, so as to increase the light signal projection range of the second light emitting head 701, specifically, a clutch device 13 is disposed between the second rotating disc 5 and the first communication light emitter 6, the clutch device 13 includes two gear blocks 1301, the two gear blocks 1301 are respectively and fixedly connected to the side walls of the second rotating disc 5 and the first communication light emitter 6, the two gear blocks 1301 can be fixed by screws, and the two gear blocks 1301 have the same size and are coaxial, an electric push rod 1302 is fixedly connected to the side wall of the supporting plate 3, an end of an output shaft of the electric push rod 1302 is fixedly connected to a mounting seat 1303 is fixedly connected to the end of the output shaft, a moving gear 1304 is rotatably connected to the mounting seat 1303, the moving gear 1304 is movably engaged with the two gear blocks 1301, and the second motor 10 always drives the first rotating disc 4 to rotate, thus, the first communication light emitter 6 always rotates with the gear block 1301 thereon, when the electric push rod 1302 is activated, the output shaft of the electric push rod 1302 slides outwards, so that the output shaft of the electric push rod 1302 slides against the moving gear 1304 on the mounting seat 1303, the moving gear 1304 simultaneously engages with the two gear blocks 1301, and then the two gear blocks 1301 synchronously rotate, so that the second rotary disk 5 rotates along with the first rotary disk 4, and then the second light emitting head 701 horizontally rotates, when the electric push rod 1302 is reversely activated, the output shaft of the electric push rod 1302 pulls the moving gear 1304 on the mounting seat 1303 to slide, so that the moving gear 1304 disengages from the two gear blocks 1301, and thus the second toothed disk 5 stops moving, and thus the angle adjustment of the second light emitting head 701 is completed.
In order to smoothly rotate the first and second rotating disks 4 and 5 on the supporting plate 3, specifically, a ring block 14 with a U-shaped cross section is fixedly connected on the upper side surface of the supporting plate 3, a plurality of fixing bolts 15 are engaged and connected on the side wall of the first rotating disc 4, the inner ends of said fixing bolts 15 slide in the grooves of the ring block 14 for enabling the first turntable 4 to rotate on the support plate 3, taking the first rotary disc 4 as an example, as shown in fig. 9, after the first rotary disc 4 is placed on the supporting plate 3, the fixing bolt 15 is screwed inwards, and the inner end of the fixing bolt 15 extends into the groove of the ring block 14, when the first rotary disc 4 rotates, the inner end of the fixing bolt 15 slides in the groove of the ring block 14, so that the first rotating disk 4 rotates smoothly, and also facilitates the disassembly and assembly of the first rotating disk 4, and the rotating form of the second rotating disk 5 is the same as that of the first rotating disk 4.
Specifically, the adjusting mechanism 8 comprises an adjusting frame 8-1 mounted on the second turntable 5, the adjusting frame 8-1 drives two trusses 8-3 respectively through two adjusting motors 8-2, the two trusses 8-3 are orthogonal and are slidably sleeved with a lens sleeve 8-4, a direction changing lens 8-5 for changing the direction of the light path is mounted on the lens sleeve 8-4, the light path can be changed after passing through the prism, for example, parallel light of a convex lens can point to the focal direction, the prism can deflect the light, for example, by changing the relative position between the focal point of the direction changing lens 8-5 and the light emitted by the first light emitting head 601, and the position between the focal point and the light can be changed by using the two orthogonal trusses 8-3, so that the direction of the second light emitting head 701 can be adjusted in the whole left side area, the light is deflected after passing through the direction changing lenses 8-5 to change the angle of the light, which is beneficial to controlling the light to be projected onto the photoelectric plate 12 of a certain user client 2, the first rotating disk 4 is provided with a lens group 20 for adjusting the light diffusion range of the first communication light emitter 6, the lens group 20 can comprise two lenses capable of adjusting the distance between the two lenses, and the light diffusion condition is changed by adjusting the distance between the two lenses, so that the light transmission range of the diffusion light is adjusted.
The working principle is as follows: the communication base station 1 and a plurality of user clients 2 are fixedly installed through a bottom plate 19, and the installation requirements are as follows: when the first light emitting head 601 rotates along with the first rotary table 4, the light emitted by the first light emitting head 601 can scan the photoelectric board 12 on each user client 2 (for example, a piece of GX1 in GXf in fig. 1 is projected onto the photoelectric board 12 on the user client 2), the second light emitting head 701 rotates along with the second rotary table 5 and the adjustment of the adjustment mechanism 8, the laser light emitted by the second light emitting head 701 can be projected onto the photoelectric board 12 on each user client 2 (for example, in fig. 1, the GX2 emitted by the second light emitting head 701 is projected onto the photoelectric board 12 on the user client 2), and the laser light emitted by the third light emitting head 901 inside each user client 2 can be projected onto the photoelectric board 12 on the communication base station 1 (for example, the GX3 emitted by the third light emitting head 901 is projected onto the photoelectric board 12 on the communication base station 1).
An operation flow of an access scheduling system for optical base station multi-user, the system operation comprises the following flows, assuming that there is one base station and five user clients of ABCDE,
step S1, the communication base station and the user client are initialized,
step S2, the communication base station sends undifferentiated authentication data D1 in a diffusion form, so that all user clients are in the data sending range of the communication base station, and the communication base station in the data form can send carriers in a simple modulation mode such as OOK, so as to obtain higher noise tolerance, the content of the authentication data D1 is 'which user clients are online and need to establish communication',
step S3, the user client receives the authentication data D1, and selects whether to respond according to the self condition,
step S4,
S41, the user client may choose not to respond if it does not need to communicate for a period of time (e.g. within 30 min), and of course, may choose to respond, the content of which may be that it does not need to communicate for a period of time,
s42, the user client end needing to establish communication and data transmission sends message data D2 to the communication base stationNMessage data D2NAt least the ID of the user client (for identification), the length of the communication data (i.e. the packet size), the time check bits (which can be used for time checking, and data checking);
in addition, the message data D2 is different due to different positions of different user clientsNThe function can utilize the directivity of optical communication to enable the data emitting head (the second light emitting head 701) of the communication base station to point to the corresponding user client, thereby avoiding data diffusion and interception, improving the safety of data from a physical layer and being higher than the safety of data in the traditional wireless data transmission mode;
in addition, for message data D2NThe method also comprises a priority marking stamp of the communication data, so that a priority ranking reference can be provided for the communication base station.
Four user clients of ABCD give the communication base station that respective message data D2 are sentNMessage data D2 of one of the clients (D subscriber client)NThe medium data length is null (indicating no communication is required),
step S5, the communication base station receives the message data D2NAnd the data is summarized,
step S6, the communication base station processes and calculates the data to obtain the distribution data information D3, such as: communicating with the A user client for 10s, communicating with the B user client for 3s, communicating with the C user client for 20s, and appointing an absolute time point of the communication,
step S7, the communication base station transmits the distribution data information D3 in a diffusion form,
step S8, the user client acquires distribution data information D3,
step S9, the user client analyzes the distribution data information D3, and obtains the time period T for communication connection with the communication base stationN，
S10, the communication base station and each user client according to the time period T divided in the distribution data information D3NData communication is carried out, of course, the time period may be continuous or not, for example, after 10s communication with the C user client is carried out, 1s communication is carried out to the a user client and then 10s communication is carried out to the C user client,
s11, the communication base station and the user client are initialized.
In order to avoid that too much data and too long transmission time in the communication between the communication base station and the user clients in the first step S1 to S11 cause initialization for a long time and prevent transmission of new data of some user clients, the steps S2 to S8 can be repeated once at an interval of a certain default time (for example, a round of flow is still not completed in 10 min), and initialization is not brought by the current step, and the acquired data is integrated with the previous data to reacquire the distributed data information D3, so that the emergency of the system can be improved to a certain extent, and communication blockage caused by too large data volume of some user clients is avoided; further message data D2NThe mark stamp containing the priority can enable subsequent emergency data to be transmitted in time.
The communication base station and the user client communicate through visible light carriers, the communication base stations in S2 and S7 modulate data in an OOK mode to communicate with the user client, the data load is small in the process, the propagation is numerous, the fault tolerance rate is good, the most stable effect can be obtained in a short time by adopting the mode, and the communication base station and the user client communicate in the QAM and OFDM mode in the whole frequency band wavelength in S10 so as to obtain the communication bandwidth as much as possible, and the large data volume transmission between the single user client and the base station can be met.
In addition, when the communication base station and the user client perform separate communication, the user client may transmit upload data to the communication base station, or the communication base station may transmit data to the user client.
In addition, because the communication base station in the scheduling system of the present application has the first communication optical transmitter 6 and the second communication optical transmitter 7, the communication base station 1 can communicate with a certain user client 2 and simultaneously timely acquire the data in steps S2-S8 without interrupting data transmission, and when the feedback is performed in step S4, the communication between the communication base station 1 and the certain user client 2 can properly reduce the occupied frequency bandwidth and provide the return message data D2 of other user terminalsNDue to message data D2NThe amount of data of (a) is very small, so there is no need to reduce the transmission rate too much.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An access scheduling system for multiple users of an optical base station, comprising a communication base station (1) and multiple user clients (2), characterized by: the inside of communication basic station (1) is equipped with two backup pads (3), and the side of going up of two backup pads (3) rotates respectively and is connected with first carousel (4) and second carousel (5), first carousel (4) and second carousel (5) are rotatory through second motor (10) drive, the side fixedly connected with that goes up of first carousel (4) is used for first communication light emitter (6) with the form transmitted light that diverges, the side of going up of second carousel (5) is connected with second communication light emitter (7), adjust the light path direction through adjustment mechanism (8) on second communication light emitter (7), the inside of user's customer end (2) is equipped with third communication light emitter (9).
2. The access scheduling system of claim 1 for multiple users of an optical base station, wherein: the side walls of the communication base station (1) and the user client (2) are respectively provided with a transparent glass layer (11) for light to pass through, and the communication base station (1) and the user client (2) are respectively provided with a photoelectric plate (12) for receiving light and converting the light into an electric signal.
3. The access scheduling system of claim 1 for multiple users of an optical base station, wherein: adjustment mechanism (8) include support (801), first spout (802), slide bar (803), swiveling wheel (804), turbine (805), dwang (806), second spout (807), first motor (808), synchronizing shaft (809) and articulated elements (8010), support (801) are fixed on second carousel (5), slide bar (803) sliding connection is in the inside of first spout (802) and second spout (807) simultaneously, the both ends sliding connection of slide bar (803) is in the inside of turbine (805), first motor (808) drive swiveling wheel (804) rotate.
4. The access scheduling system of claim 1 for multiple users of an optical base station, wherein: be equipped with clutch (13) between second carousel (5) and first communication light emitter (6), clutch (13) include two gear piece (1301), and two gear piece (1301) are fixed connection respectively on the lateral wall of second carousel (5) and first communication light emitter (6), fixedly connected with electric putter (1302) on the lateral wall of backup pad (3), the output shaft tip fixedly connected with mount pad (1303) of electric putter (1302), it is connected with movable gear (1304) to rotate on mount pad (1303), movable gear (1304) and two gear piece (1301) swing joint.
5. The access scheduling system of claim 1 for multiple users of an optical base station, wherein: fixedly connected with cross section is ring block (14) of U type on the last side of backup pad (3), the meshing is connected with a plurality of fixing bolt (15) on the lateral wall of first carousel (4), the inner slip of fixing bolt (15) is used for realizing that first carousel (4) is rotatory on backup pad (3) in the recess of ring block (14), the rotation form of second carousel (5) is the same with the rotation form of first carousel (4).
6. The access scheduling system of claim 1 for multiple users of an optical base station, wherein: the adjusting mechanism (8) comprises an adjusting frame (8-1) arranged on the second turntable (5), the adjusting frame (8-1) drives two trusses (8-3) through two adjusting motors (8-2) respectively, a lens sleeve (8-4) is sleeved between the two trusses (8-3) in an orthogonal mode in a sliding mode, and a turning lens (8-5) used for changing the direction of a light path is arranged on the lens sleeve (8-4);
and a lens group (20) for adjusting the light diffusion range of the first communication light emitter (6) is arranged on the first rotating disc (4).
7. An operation flow of an access scheduling system for multiple users of an optical base station, characterized in that: the system operation comprises the following processes:
s1, the communication base station and the user client are initialized,
s2, the communication base station sends the undifferentiated authentication data D1 in a diffusion form,
s3, the user client receives the authentication data D1,
s4, the user client end sends message data D2 to the communication base stationN，
S5, the communication base station receives the message data D2NAnd the data is summarized,
s6, the communication base station processes and calculates the data to obtain the distribution data information D3,
s7, the communication base station sends the distribution data information D3 in a diffusion form,
s8, the user client end obtains the distribution data information D3,
s9, the user client analyzes the distribution data information D3 to obtain the time period T for communication connection with the communication base stationN，
S10, the communication base station and each user client according to the time period T divided in the distribution data information D3NThe communication of the data is carried out,
s11, the communication base station and the user client are initialized.
8. The operation procedure of the access scheduling system for multiple users in an optical base station according to claim 7, wherein: the message data D2NAt least including the ID of the user client, the communication data length and the time check bit.
9. The operation procedure of the access scheduling system for multiple users in an optical base station according to claim 7, wherein: the message data D2NThe method also comprises coordinate data of the position of the user client.
10. The operation procedure of the access scheduling system for multiple users in an optical base station according to claim 7, wherein: the communication base station and the user client communicate through visible light carriers, the communication base station and the user client in S2 and S7 modulate data in the form of OOK for communication, and the communication base station and the user client in S10 communicate in the mode of QAM and OFDM.
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