CN101969597B - Dense crowd oriented service system integrating communication, broadcasting and positioning information - Google Patents
Dense crowd oriented service system integrating communication, broadcasting and positioning information Download PDFInfo
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Abstract
The invention relates to a dense crowd oriented service system integrating communication, broadcasting and positioning information, belonging to the field of an information service system. the service system is characterized by comprising at least one communication facility, at least one broadcasting facility, at least one difference GPS (Global Positioning System) positioning base station and atleast one monitoring facility which are all arranged on an infrastructure with the ability of power supply, as well as at least one wireless mobile terminal carried by users; the monitoring facility transmits public characteristic information including the status of the crowds to the communication facility; and the difference GPS positioning base station transmits the difference GPS positioning information to the broadcasting facility for the wireless mobile terminal to correct the positioning position. By the invention, low-power-consumption and high-efficiency coverage in a dense crowd region is realized, the comprehensive information service integrating high-efficiency communication, reliable broadcasting and accurate positioning can be realized, the actual requirement information aiming at the dense crowds can be provided by utilizing the position information of the wireless mobile terminal through the combination of the broadcasting and the communication, the dense crowds can be monitored, and public safety information can be provided.
Description
Technical field
The invention provides the service system of a kind of converged communication towards dense population, broadcasting and locating information, belong to areas of information technology, this system carries out lower powered efficient covering mainly for crowded zone, to realize integrating the integrated information service of efficient communication, reliable broadcast and precise positioning.
Background technology
Multi-media informations ervice system take radio communication, television broadcasting etc. as representative has become the important new and high technology pillar industry in countries in the world.At present, business-like 3-G (Generation Three mobile communication system) development is moving forward steadily; The high speed development of the BWA take WiMAX as representative has become a spotlight of telecommunication industry development; The implementation phase of entering towards the terrestrial wireless digital television broadcasting system of multimedia service.A common objective of these information service systems is to provide the wireless transmission in the global range to use with higher spectrum efficiency and reliability, lower power consumption, better flexibility and extensibility.
Yet, people progressively recognize existing and are about to the system of release in the limitation of the aspects such as Radio Resource complex optimum utilization, the contradiction of the business demand that still can not solve well limited frequency spectrum resource and increase rapidly, and consequent wireless transmission bottleneck problem becomes increasingly conspicuous.For example, radio communication will face great spectral gaps, can not support well the multimedia service of larger capacity, particularly for intensive user situations such as traffic main arteries, general operator can by setting up the base station, adopt the microcellulor measure of intensive covering to guarantee communication, this can increase the co-channel interference of minizone on the one hand, increase energy consumption, need on the other hand a large amount of additional financial resources to drop into, and uneconomical.The terrestrial wireless digital television broadcasting is still mainly supported single fixedly television services with present technology, and is very weak to the tenability of high-quality mobile reception and multimedia service, mainly is because the link layer reliability of broadcast data packet is difficult to guarantee.For example in the IEEE802.11 WLAN standard, its broadcast data packet adopts fixed rate to send, and only sends once, and all users receive.In the situation that takes defeat that exists transmission conflict, channel disturbance to cause, the transmission effect of broadcast data is unwarrantable.For addressing this problem, from existing literature search situation, all be the data carousel that adopts based on clean culture in essence, greatly wasted limited frequency spectrum resource.
Meanwhile, along with the development of society, people's scope of activities is more and more wider, more and more uncertain.On the one hand, the wireless mobile user wonders oneself at that time specifying information of environment of living in more and more urgently, such as " I where ", " what is near me ", " how I arrive the destination ", " people that I will look for wherein ", " our how to confirm to each side all meeting point easily ", " how I add my personalized map icon " etc.; On the other hand, relevant departments also are starved of for dense population and monitor, and by information gathering, processing and the storage to data, video, realize safety, efficient operation to adjust service system; By the information that gathers is carried out real-time analysis, processing and prediction, commander provides decision scheme for guide service, and for the user provides information resources and suggestion, thereby assist to avoid service that middle generation obstruction and system disorders are provided, and then improve utilization ratio and the fail safe of the network operation.By means of existing science and technology, people's activity is gradually take colony, cooperation and location distribution as principal character.This mobility, uncertainty and group collaboration have brought opportunities and challenges for carrying out of location-based mobile information service.
Based on above consideration, the present invention proposes a kind of converged communication towards dense population, broadcasting and locating information service system.The present invention is by having the infrastructure with power supply capacity now, such as traffic lights post of crossroad etc., upper Installation of New Type communication equipment, broadcasting equipment, differential GPS positioning datum equipment and watch-dog, realization integrates the integrated information service of efficient communication, reliable broadcast and precise positioning; Realize precise positioning by differential GPS positioning datum equipment, and according to user's positional information, dynamically adjust communication and broadcast resource, efficient, Extraordinary communication and broadcast service are provided; By the communication requirement of a large number of users to hot information is directed to broadcast as on the main pattern, to realize more efficient communication; By communication equipment broadcast channel is monitored, according to the broadcast data packet receiving status information that based on feedback link returns, dynamically adjust the transmission parameter of broadcasting equipment, for the user provides higher-quality MBMS service; By watch-dog dense population is carried out Real Time Monitoring, and utilize communication equipment or broadcasting equipment to provide real time information for relevant departments.Compare with existed system, the present invention can realize lower powered efficient covering towards stream of people's close quarters; Meanwhile, by reasonably utilizing wireless mobile user's positional information, wireless communication system and broadcast system are complemented each other, more effectively utilize limited frequency spectrum resource, higher-quality multimedia service is provided.
Summary of the invention
The object of the present invention is to provide a kind of converged communication towards dense population, broadcasting and locating information service system.This system uses existing mobile communication, public TV broadcast band, provides broadband wireless communications and broadcasting service service according to user's precise position information and real-time stream of people's condition information; Wherein, precise position information utilizes the positioning equipment of GPS positioning datum equipment and portable terminal to obtain, and stream of people's condition information utilizes watch-dog to obtain in real time.The present invention combines precise positioning, communication link and multimedia broadcasting interactivity in the wireless environment is provided.
Thinking of the present invention is:
1. complementary communication equipment and broadcasting equipment have been adopted at least.
Popularizing and development of radio communication, make that people can enjoyment information transmit reliable, convenient with fast, yet owing to the frequency spectrum resource that is allocation of communications is limited, for the very large Transmitting of Multi-media Information of data volume, it is very uneconomic solely adopting the communications based on Wireless Telecom Equipment.Relatively, the broadcasting of distributing based on the broadcasting equipment data-oriented has stronger message transmission capability, but owing to lacking more efficiently feedback retransmission mechanism, its reliability is difficult to guarantee.Therefore, the present invention is with the advantages of communication equipment and broadcasting equipment, carried out the granting of public demands data by broadcasting, public demands information comprises information on services, differential GPS location round-off error and the current people information with a large number of users demand, and the broadcasting-quality feedback information dynamic adjustment resource that provides according to communication equipment distributes and releasing mode, thereby more effectively utilize limited frequency spectrum resource, higher-quality multimedia service is provided.
2. adopted at least a kind of novel communication equipment, to realize mobile communication and to communicate by letter as required two kinds
Function.
Communication equipment of the present invention has mobile communication and the two kinds of patterns of communicating by letter as required.By default, Wireless Telecom Equipment utilizes the large residential quarter of existing cellular network communication link, such as GSM, IS-95,3-G (Generation Three mobile communication system) etc., or utilizes WLAN to realize traditional mobile communication function.Communication pattern employing condition activates as required, at first, ambient conditions around communication equipment can obtain according to the position at mobile phone users place, wherein comprise at least electromagnetic environment information, network node on every side, such as base station, via node information etc., but be used for predicting this user by network node set up after the communication quality of energy and can with the network node situation of this synergic user communication, and then utilize rational resource allocation mechanism Resources allocation, realize that the resource-sharing of this user and each network node is with collaborative; Secondly, communication equipment has special based on feedback link for broadcasting, and it can return the accepting state of broadcast data packet, and calculates packet loss by controller, and the result is informed broadcasting equipment, so that it adjusts the quality of reception that relevant parameter improves broadcast data packet; Again, this communication equipment can have the information of common features by active obtaining dense population stream of people zone a large number of users, stream of people's condition information that obtains comprising watch-dog etc., leave in the memory device, and broadcast these information to the user in next cycle by the on-demand broadcasting pattern, realize more efficient communication.
3. adopted at least a kind of novel broadcasting equipment, to realize two kinds of initiatively broadcasting and on-demand broadcastings
Function.
Broadcasting equipment of the present invention has initiatively broadcasting and two kinds of patterns of on-demand broadcasting.By default, this broadcasting equipment is realized traditional general broadcast function, namely the broadcast message by receiving the radio network transmission, send a plurality of broadcast terminals by broadcasting equipment.The mode that on-demand broadcasting pattern employing condition activates, at first, ambient conditions around broadcasting equipment can obtain according to the position that receives broadcast mobile terminal user place, comprising electromagnetic environment information etc., but be used for quality of energy after the prediction broadcasting, and then utilize rational resource allocation mechanism Resources allocation; Secondly, the accepting state of the broadcast data packet that broadcasting equipment can feed back to according to communication link and the packet loss that controller calculates, when it can not satisfy quality of service requirement, dynamically adjust the relevant parameter of broadcasting, such as broadcast rate, channel allocation patterns in modulation system, error correction coding code check, the two-dimensional space that is comprised of time and frequency etc. provide the needed QoS of multi-media broadcasting service to guarantee; Again, this broadcasting equipment can have a large number of users the information of common features, and the stream of people's condition information that obtains comprising differential GPS location round-off error and watch-dog etc. are broadcast to user or relevant departments, save limited frequency spectrum resource.
4. adopt at least a kind of differential GPS positioning reference station, to realize precise positioning.
Differential GPS just can carry out three-dimensional localization after being installed in 4 satellites of GPS receiver observation on the base station, calculate the coordinate of base station.Owing to existing orbit error, clocking error, SA impact, atmospheric effect, multipath effect and other errors, the coordinate that calculates and the known coordinate of base station are different.And base station is owing to itself having strictly accurately these ground elements of a fix, can draw error modification value by comparing with the real-time elements of a fix, and utilize the on-demand broadcasting mode that this error modification value is sent, received by mobile radio terminal, and the subscriber station coordinate that it resolves is corrected, so that positioning accuracy reaches 1 rice noodles degree.
5. adopt at least a kind of watch-dog, such as video camera etc.
Watch-dog can the Real Time Monitoring dense population mobility status, be information service, provide important information such as commanders such as transport hubs, watch-dog among the present invention also should send monitored results to communication equipment or broadcasting equipment, and utilize the mode of as required communication or broadcasting that traffic information is sent to mobile phone users or relevant departments, make it understand this zone people information, provide reference for formulating rational service plan.
Feature of the present invention is:
Service system towards converged communication, broadcasting and the locating information of dense population, it is characterized in that containing: be installed at least one communication equipment, at least one broadcasting equipment, at least one differential GPS positioning reference station and at least one watch-dog on the infrastructure with power supply capacity, and at least one mobile radio terminal that is carried by the user, wherein:
Described communication equipment, link to each other with communication cell net, described watch-dog and described broadcasting equipment, and to described mobile radio terminal sending/receiving wireless communication signals, include: wireless receipts/transmitting device, first mode selector 11, the first controller 21 and memory device, wherein:
Wireless receipts/transmitting device
Be provided with: the input that receives described mobile radio terminal mobile communication signal, the input of the outgoing data signal of described first mode selector 11 outputs, and the input of the work order of described the first controller 21 outputs, also be provided with: the output that sends to the mobile communication signal of described mobile radio terminal, send to the output of the described mobile radio terminal data-signal of described first mode selector 11, the outgoing data signal of described first mode selector 11 outputs comprises the signal of communication that sends to described mobile radio terminal, broadcast data packet accepting state inquiry message, to the demand inquiry message of information with common features and the inquiry message of customer location and ambient condition information, wherein said information with common features refers to have the information of public right to information, at least comprise stream of people's situation, breaking news, hereinafter be called for short " public information ", described ambient condition information comprises electromagnetic environment information and ambient network nodal information at least, the described mobile radio terminal data-signal that sends to described first mode selector 11 comprises the signal of communication from described mobile radio terminal, the broadcast data packet receiving status information, demand information and customer location and ambient condition information to described public information
First mode selector 11
Be provided with: from the input of waiting to send out mobile communication signal of described communication cellular network, the input of the described mobile radio terminal data-signal of described wireless receiving/transmitting device output, the input of stream of people's condition information of described watch-dog, the input of described the first controller 21 preference patterns and working signal, also be provided with: send the broadcast data packet accepting state to described broadcasting equipment, the output of described public information and customer location and ambient condition information, send the output of communication of mobile terminal data to described communication cell net, to the customer location of described the first controller 21 transmissions and the output of ambient condition information, the output that sends the demand information of described public information and comprise the described public information of stream of people's condition information to described memory device, described first mode selector 11 selects the current communication mode information that will realize to send to described wireless receipts/transmitting device according to the control information of described the first controller 21
Memory device
Be provided with: from the demand information that comprises described public information of described first mode selector 11 outputs and the input that comprises the described public information of stream of people's condition information, also be provided with: send to described the first controller 21 and stored the output of data,
The first controller 21
Be provided with: from the customer location of described first mode selector 11 and the input of ambient condition information, from the described public information of described memory device, stores and the input of demand information thereof, also be provided with: the output that sends preference pattern, working signal and described public information to described first mode selector 11, send the output of work order to described wireless receipts/transmitting device
Described communication equipment is carried out the communication pattern that described the first controller 21 is set according to the following steps:
Under 21 controls of described the first controller, described wireless receipts/transmitting device sends the signal of communication of general communication to described mobile radio terminal, and periodically send the as required signal of communication of communication according to setting to described mobile radio terminal, the signal of communication of communication comprises broadcast data packet accepting state inquiry message as required, inquiry message to described public information demand, customer location and surrounding environment inquiry message, described wireless receipts/transmitting device receives the as required broadcast data packet receiving status information of communication that described mobile radio terminal returns simultaneously, the demand information of described public information, customer location and ambient condition information, and send customer location and ambient condition information to described the first controller 21 and realize that dynamic adjustments distribute to the communication resource of described mobile radio terminal
Under 21 controls of described the first controller, described first mode selector 11 is periodically monitored the described public information demand information that described wireless receipts/transmitting device receives, initiatively obtain the described public information with a large amount of potential demands from described watch-dog and described cellular communications networks, described demand information and public information are sent to described memory device, stores, the public information that demand is not high sends to described mobile radio terminal by general communication mode, with the broadcast data packet receiving status information, the public information that customer position information and demand are high sends to described broadcasting equipment at next cycle;
Described broadcasting equipment, link to each other with radio network, described communication equipment, described differential GPS base station and described watch-dog, and can send broadcast singal to described mobile radio terminal, inside is contained at least: the second mode selector 12, forward error correction coder, modulator, up-conversion and radiating circuit, and second controller 22, wherein:
The second mode selector 12
Be provided with: the input of the multimedia broadcast signal of radio network, from the broadcast data packet receive status information of described the first controller 21 by described first mode selector 11 transmissions, the input of customer location and environmental information and described public information, the update information input of described differential GPS base station, stream of people's condition information input from described watch-dog, preference pattern and working signal input from described second controller 22, also be provided with: export the output of the code stream of broadcast message under the current broadcast pattern to described forward error correction coder, to the broadcast data packet acceptance state information of described second controller 22 outputs, customer location and ambient condition information and the output that comprises the described public information of stream of people's situation;
Forward error correction coder
Be provided with: the input of the coding parameter that is used for raising multi-media broadcasting service quality that the input of the code stream of broadcast message under the current broadcast pattern, described second controller 22 send also is provided with: the output of the code stream of process coding,
Modulator
Be provided with: the input of the modulation parameter that is used for raising multi-media broadcasting service quality that described second controller 22 sends, the code stream input behind described forward error correction coder coding also is provided with: the multimedia broadcast signal output after the modulation,
Up-conversion and radiating circuit
Be provided with: the input of the frequency allocation information of described controller output, the multimedia broadcast signal input after the described modulation also is provided with: send the output of broadcast singal to mobile radio terminal,
Second controller 22
Be provided with: from the input of broadcast data packet receiving status information, customer location and the ambient condition information of described the second mode selector 12, also be provided with: send preference pattern and working signal output to described the second mode selector 12, the output of the coding parameter that sends to the forward direction error correcting encoder, the output of the modulation parameter that sends to modulator, the output of the frequency allocation information that upconvert and radiating circuit send;
Described broadcasting equipment is carried out the broadcast mode that described second controller 22 is set according to the following steps:
After described broadcasting equipment started, described controller was selected information to described the second mode selector 12 transfer modes;
Described the second mode selector 12 is judged the current broadcast mode realized of needing: if the general broadcast pattern is then carried out forward error correction coding, sent information according to the Da Qu broadcast mode by the frequency range of distributing to the multimedia broadcasting after modulating, upconvert to radio-frequency head the multimedia broadcast signal code stream of radio network; If on-demand broadcasting pattern, the pattern control word that then provides according to described controller is carried out on-demand broadcasting, and the content of on-demand broadcasting is from the error correction information of the described public information of communication equipment, differential GPS base station and from stream of people's condition information of described watch-dog;
According to described controller to broadcast data packet receiving status information, customer location and ambient condition information dynamic adjustments broadcast resource from described the second mode selector 12, if can not satisfy the service quality QoS of multi-media broadcasting service guarantees, then adjust the parameter that comprises broadcast rate, modulation system, error correction coding rate, again through going out with the band transmit that is assigned to after forward error correction coding, the modulation;
Described differential GPS positioning reference station, link to each other with broadcasting equipment, be used for to calculate and the difference position error correction at place is sent to described mobile radio terminal by broadcasting equipment, to the error correction that described mobile radio terminal provides local differential GPS to locate, increase the positioning accuracy of dense population;
Described mobile radio terminal, carried by the user, the environment cognitive device that includes radio communication device, broadcast receiver, differential GPS client and comprise at least the electromagnetic environment monitor instrument, be used for generally communicating by letter and communicating by letter as required with described communication equipment, receive general broadcast and on-demand broadcasting that broadcasting equipment sends; In the described as required communication, receive the descending inquiry message of broadcasting-quality, public information demand, customer location and the surrounding environment of described communication equipment, and send to described communication equipment with current broadcast quality, public information demand information, user's current location and ambient condition information are up; In the described on-demand broadcasting, receive public service information, stream of people's condition information from described broadcasting equipment, come the position error update information of self-differential GPS, revise user's current location information;
Described watch-dog comprises a video camera at least, connects communication equipment and broadcasting equipment, be used for the local public information that comprises stream of people's situation of monitoring, and the described public information that will obtain sends to described communication equipment and broadcasting equipment.
Advantage of the present invention is:
1. can realize lower powered efficient covering towards intensive stream of people zone;
2. can be by having the infrastructure with power supply capacity now, traffic lights post such as the crossroad, upper Installation of New Type communication equipment, broadcasting equipment, differential GPS positioning equipment and watch-dog, realization integrates the integrated information service of efficient communication, reliable broadcast and precise positioning;
3. can wireless communication system and broadcast system be complemented each other by reasonably utilizing wireless mobile user's positional information, more effectively utilize limited frequency spectrum resource, provide high-quality more and for the information service of intensive stream of people's actual demand;
4. can carry out Real Time Monitoring to dense population by watch-dog, and provide real time status information by communication equipment or broadcasting equipment for relevant departments.
Description of drawings
Fig. 1 is towards converged communication, broadcasting and the locating information service system block diagram of dense population.
The new system applies of Fig. 2 is in the schematic diagram at intense traffic crossing.
Communication equipment block diagram in the described system of Fig. 3.
Communication device works flow process in the described system of Fig. 4.
Broadcasting equipment block diagram in the described system of Fig. 5.
Broadcasting equipment flow process in the described system of Fig. 6.
Public information business process map as an example of traffic information example under the new system of Fig. 7.
Other customer location business process maps of search in the dense population scene under the new system of Fig. 8.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described as follows.
Block diagram such as Fig. 1 of a kind of converged communication towards dense population, broadcasting and locating information service system, it contains: at least one communication equipment, at least one broadcasting equipment, at least one differential GPS positioning reference station, at least one mobile radio terminal, at least one watch-dog.
An applicable scene of new system is the intense traffic crossing, schematic diagram such as Fig. 2.Under the power supply infrastructure based on traffic lights, lay communication equipment, broadcasting equipment, differential GPS positioning reference station and monitoring road conditions equipment, for the user who holds described mobile radio terminal on the road provides communication, broadcasting and pricise position service under this scene.
The effect of the communication equipment in the new system is to carry out general communication and as required communication with mobile radio terminal, by as required broadcast data packet accepting state, public information demand, customer location and the ambient condition information of traffic enquiry mobile radio terminal, and according to customer location and ambient condition information dynamic adjustments allocate communications resource, and customer location and the ambient condition information of public information demand, broadcast data packet accepting state and mobile radio terminal sent to broadcasting equipment.
The block diagram of communication equipment such as Fig. 3, it contains: wireless receipts/transmitting device, first mode selector 11, the first controller 21 and memory device, wherein:
Wireless receipts/transmitting device, be provided with: the input that receives described mobile radio terminal mobile communication signal, the input of the outgoing data signal of described first mode selector 11 outputs, and the input of the work order of described the first controller 21 outputs, also be provided with: the output that sends to the mobile communication signal of described mobile radio terminal, send to the output of the described mobile radio terminal data-signal of described first mode selector 11, the outgoing data signal of described first mode selector 11 outputs comprises the signal of communication that sends to described mobile radio terminal, broadcast data packet accepting state inquiry message, to the demand inquiry message of described public information and the inquiry message of customer location and ambient condition information, described ambient condition information comprises electromagnetic environment information and ambient network nodal information at least, the described mobile radio terminal data-signal that sends to described first mode selector 11 comprises the signal of communication from described mobile radio terminal, the broadcast data packet receiving status information, demand information and customer location and ambient condition information to described public information
First mode selector 11, be provided with: from the input of waiting to send out mobile communication signal of described communication cellular network, the input of the described mobile radio terminal data-signal of described wireless receiving/transmitting device output, the input of stream of people's condition information of described watch-dog, the input of described the first controller 21 preference patterns and working signal, also be provided with: send the broadcast data packet accepting state to described broadcasting equipment, the output of described public information and customer location and ambient condition information, send the output of communication of mobile terminal data to described communication cell net, to the customer location of described the first controller 21 transmissions and the output of ambient condition information, the output that sends the demand information of described public information and comprise the described public information of stream of people's condition information to described memory device, described first mode selector 11 selects the current communication mode information that will realize to send to described wireless receipts/transmitting device according to the control information of described the first controller 21
Memory device, from the demand information that comprises described public information of described first mode selector 11 outputs and the input that comprises the described public information of stream of people's condition information, also be provided with: send to described the first controller 21 and stored the output of data
The first controller 21, be provided with: from the customer location of described first mode selector 11 and the input of ambient condition information, from the described public information of described memory device, stores and the input of demand information thereof, also be provided with: send the output of preference pattern, working signal and described public information to described first mode selector 11, send the output of work order to described wireless receipts/transmitting device.
Described communication equipment is carried out the communication pattern that described the first controller 21 is set according to the following steps, such as Fig. 4:
1. after communication device initiated, described the first controller 21 is selected information to described first mode selector 11 transfer modes;
2. first mode selector 11 is judged the current communication pattern that will carry out;
3. if start general communication pattern, wireless receipts/transmitting device receives/sends general signal of communication;
4. if start as required communication pattern, the control word that provides according to controller realizes as required communication function, namely the signal of communication of communication comprises broadcast data packet accepting state inquiry message as required, inquiry message to dense population public information demand, customer location and surrounding environment inquiry message, described wireless receipts/transmitting device receives the as required broadcast data packet receiving status information of communication that mobile radio terminal returns simultaneously, public information demand information and customer location and ambient condition information, and send customer location and ambient condition information to described the first controller 21 and realize that dynamic adjustments distribute the communication resource of mobile radio terminals;
5. under 21 controls of described the first controller, described first mode selector 11 is periodically monitored the described public information demand information that described wireless receipts/transmitting device receives, and has a described public information of a large amount of potential demands from described watch-dog and described cellular communications networks active obtaining, described demand information and public information are sent to described memory device, stores, the public information that demand is not high sends to described mobile radio terminal by general communication mode, with the broadcast data packet receiving status information, the public information that customer position information and demand are high sends to described broadcasting equipment at next cycle;
The effect of broadcasting equipment is to send general broadcast and on-demand broadcasting to mobile radio terminal in the new system, by receiving broadcast data packet receiving status information and customer location and the ambient condition information from Wireless Telecom Equipment, the parameters of dynamic adjustments broadcasting guarantees the service quality of broadcasting.Accept simultaneously from Wireless Telecom Equipment public information, come the update information of self-differential GPS base station and from the monitor message of watch-dog, send to mobile radio terminal by the on-demand broadcasting pattern.
The block diagram of broadcasting equipment such as Fig. 5, contain: the second mode selector 12, forward error correction coder, modulator, up-conversion and radiating circuit and second controller 22, wherein:
The second mode selector 12
Be provided with: the input of the multimedia broadcast signal of radio network, from the broadcast data packet receive status information of described the first controller 21 by described first mode selector 11 transmissions, the input of customer location and environmental information and described public information, the update information input of described differential GPS base station, stream of people's condition information input from described watch-dog, preference pattern and working signal input from described second controller 22, also be provided with: export the output of the code stream of broadcast message under the current broadcast pattern to described forward error correction coder, to the broadcast data packet acceptance state information of described second controller 22 outputs, customer location and ambient condition information and the output that comprises the described public information of stream of people's situation;
Forward error correction coder is provided with: the input of the coding parameter that is used for raising multi-media broadcasting service quality that the input of the code stream of broadcast message under the current broadcast pattern, described second controller 22 send also is provided with: the output of the code stream of process coding,
Modulator is provided with: the input of the modulation parameter that is used for raising multi-media broadcasting service quality that described second controller 22 sends, and the code stream input behind described forward error correction coder coding also is provided with: the multimedia broadcast signal output after the modulation,
Up-conversion and radiating circuit are provided with: the input of the frequency allocation information of described controller output, and the multimedia broadcast signal input after the described modulation also is provided with: send the output of broadcast singal to mobile radio terminal,
Second controller 22, be provided with: from the input of broadcast data packet receiving status information, customer location and the ambient condition information of described the second mode selector 12, also be provided with: send preference pattern and working signal output to described the second mode selector 12, the output of the coding parameter that sends to the forward direction error correcting encoder, the output of the modulation parameter that sends to modulator, the output of the frequency allocation information that upconvert and radiating circuit send;
Described broadcasting equipment is carried out the broadcast mode that described controller is set according to the following steps, such as Fig. 6:
1. after described broadcasting equipment started, described controller was selected information to described the second mode selector 12 transfer modes;
2. the second mode selector 12 is judged the current broadcast mode that will realize;
3. if start the general broadcast pattern, then the multimedia broadcast signal code stream of radio network is carried out forward error correction coding, sent information according to the Da Qu broadcast mode by the frequency range of distributing to the multimedia broadcasting after modulating, upconvert to radio-frequency head;
4. if start the on-demand broadcasting pattern, the pattern control word that then provides according to described controller is carried out on-demand broadcasting, and the content of on-demand broadcasting is from the error correction information of communication equipment public information, differential GPS base station and from stream of people's condition information of watch-dog;
According to described controller to broadcast data packet receiving status information, customer position information dynamic adjustments broadcast resource from the second mode selector 12, if can not satisfy the service quality QoS of multi-media broadcasting service guarantees, then adjust the parameter that comprises broadcast rate, modulation system, error correction coding rate, again through going out with the band transmit that is assigned to after forward error correction coding, the modulation.
Differential GPS positioning reference station in the new system, link to each other with broadcasting equipment, be used for to calculate and the difference position error correction at place is sent to mobile radio terminal by broadcasting equipment, the error correction of local differential GPS location is provided to mobile radio terminal, increase the positioning accuracy of dense population;
Described mobile radio terminal, carried by the user, the environment cognitive device that includes radio communication device, broadcast receiver, differential GPS client and comprise at least the electromagnetic environment monitor instrument, be used for generally communicating by letter and communicating by letter as required with described communication equipment, receive general broadcast and on-demand broadcasting that broadcasting equipment sends; In the described as required communication, receive the descending inquiry message of broadcasting-quality, public information demand, customer location and the surrounding environment of described communication equipment, and send to described communication equipment with current broadcast quality, public information demand information, user's current location and ambient condition information are up; In the described on-demand broadcasting, receive public service information, stream of people's condition information from described broadcasting equipment, come the position error update information of self-differential GPS, revise user's current location information;
Described watch-dog comprises a video camera at least, connects communication equipment and broadcasting equipment, be used for the local public information that comprises stream of people's situation of monitoring, and the described public information that will obtain sends to described communication equipment and broadcasting equipment.
In new system, can carry out sharing and transmission of data between communication equipment, broadcasting equipment and the differential GPS base station.Share public information, broadcast data packet receiving status information and the user's more specific location information that mobile radio terminal needs such as broadcasting equipment from Wireless Telecom Equipment, share the error correction information to mobile radio terminal GPS subscriber station to be sent from the differential GPS base station, share population surveillance information from watch-dog.Following concrete example illustrates implementing procedure professional under the new system.
Outstanding advantage and the important feature of new system are under the dense population sight the large public informations of demand such as stream of people's condition information to be transferred to broadcast communication from general point to point wireless communication, have saved the resources such as frequency spectrum.Reach the dynamic adjustments broadcast resource according to the monitoring to the broadcast channel quality simultaneously, guarantee broadcasting-quality and the purpose that reduces energy consumption thereby reached.Public information operation flow such as Fig. 7 as an example of traffic information example:
1. mobile radio terminal enters the coverage of described dense population system;
2. the mobile radio terminal received communication equipment inquiry of communicating by letter as required;
3. mobile radio terminal is replied broadcast data packet accepting state, the request to traffic information, customer location and ambient condition information to communication equipment;
4. communication equipment receives the mobile radio terminal return information, and deposits the traffic information request in memory;
5. controller judges whether the demand of traffic information is enough broadcasted;
6. if not enough broadcasting of demand, then communication equipment sends to mobile radio terminal with traffic information by communication pattern;
7. if demand is enough broadcasted, then communication equipment is with the broadcast data packet accepting state, send to broadcasting equipment to the request of traffic information and customer location and ambient condition information;
8. second controller 22 distributes the relevant parameter in broadcast resource and the dynamic adjustments broadcasting equipment according to broadcast data packet accepting state and customer position information;
9. broadcasting equipment sends traffic information to a plurality of mobile radio terminals by on-demand broadcasting;
Another outstanding advantage and the important feature of new system are to have gathered the differential GPS function, under the dense population sight, pass through the differential GPS base station, calculate in real time the location round-off error of region and this information exchange is crossed broadcasting equipment and send to mobile radio terminal in the zone, the positioning accuracy of raising mobile radio terminal self; Simultaneously, the communication equipment of new system obtains the more specific location information of each mobile radio terminal A from communicate by letter as required, and this positional information downlink communication can be sent to another mobile radio terminal B that needs, thereby provides the position between the mobile radio terminal mutual.Mobile radio terminal A asks operation flow such as Fig. 8 of the positional information of another mobile radio terminal B:
1. mobile radio terminal A enters the coverage of described dense population system;
2. the mobile radio terminal A received communication equipment inquiry of communicating by letter as required;
3. mobile radio terminal A replys location information request to mobile radio terminal B to communication equipment;
4. communication equipment receives return information, and checks the local positional information whether mobile radio terminal B is arranged;
5. if the positional information of mobile radio terminal B is arranged, then communication equipment sends to mobile radio terminal A with the positional information downlink communication of mobile radio terminal B;
6. if without the positional information of mobile radio terminal B, communication equipment sends location interrogation information to mobile radio terminal B;
7. mobile radio terminal B receives inquiry message, the differential GPS round-off error calculating book position of sending according to broadcasting equipment, and the result sent communication equipment;
8. communication equipment receives the positional information of mobile radio terminal B, and this information downlink communication is sent to mobile radio terminal A.
Claims (1)
1. service system, this service system is the service system of converged communication, broadcasting and locating information towards dense population, it is characterized in that containing: be installed at least one communication equipment, at least one broadcasting equipment, at least one differential GPS positioning reference station and at least one watch-dog on the infrastructure with power supply capacity, and at least one mobile radio terminal that is carried by the user, wherein:
Described communication equipment, link to each other with communication cell net, described watch-dog and described broadcasting equipment, and to described mobile radio terminal send/receive wireless communication signals from described mobile radio terminal, include: wireless receipts/transmitting device, first mode selector (11), the first controller (21) and memory device, wherein:
Wireless receipts/transmitting device
Be provided with: the input that receives described mobile radio terminal mobile communication signal, receive the input of the outgoing data signal of described first mode selector (11) output, and the input that receives the work order of described the first controller (21) output, also be provided with: the output that sends to the mobile communication signal of described mobile radio terminal, send to the output of the described mobile radio terminal data-signal of described first mode selector (11), the outgoing data signal of described first mode selector (11) output comprises the signal of communication that sends to described mobile radio terminal, broadcast data packet accepting state inquiry message, to the demand inquiry message of information with common features and the inquiry message of customer location and ambient condition information, wherein said information with common features refers to have the information of public right to information, at least comprise stream of people's situation, breaking news, hereinafter be called for short " public information ", described ambient condition information comprises electromagnetic environment information and ambient network nodal information at least, the described mobile radio terminal data-signal that sends to described first mode selector (11) comprises the signal of communication from described mobile radio terminal, the broadcast data packet receiving status information, demand information and customer location and ambient condition information to described public information
First mode selector (11)
Be provided with: the input of waiting to send out mobile communication signal from receiving of described communication cellular network, the input of the described mobile radio terminal data-signal of reception of described wireless receiving/transmitting device output, the input of stream of people's condition information of described reception watch-dog, the input of described reception the first controller (21) preference pattern and working signal, also be provided with: send the broadcast data packet accepting state to described broadcasting equipment, the output of described public information and customer location and ambient condition information, send the output of communication of mobile terminal data to described communication cell net, to the customer location of described the first controller (21) transmission and the output of ambient condition information, the output that sends the demand information of described public information and comprise the described public information of stream of people's condition information to described memory device, described first mode selector (11) selects the current communication mode information that will realize to send to described wireless receipts/transmitting device according to the control information of described the first controller (21)
Memory device
Be provided with: the reception from described first mode selector (11) output comprises the demand information of described public information and the input that comprises the described public information of stream of people's condition information, also be provided with: send to described the first controller (21) and stored the output of data
The first controller (21)
Be provided with: from the reception customer location of described first mode selector (11) and the input of ambient condition information, input from the described public information of the reception of described memory device, stores and demand information thereof, also be provided with: the output that sends preference pattern, working signal and described public information to described first mode selector (11), send the output of work order to described wireless receipts/transmitting device
Described communication equipment is carried out the communication pattern that described the first controller (21) is set according to the following steps:
Under described the first controller (21) control, described wireless receipts/transmitting device sends the signal of communication of general communication to described mobile radio terminal, and periodically send the as required signal of communication of communication according to setting to described mobile radio terminal, the signal of communication of communication comprises broadcast data packet accepting state inquiry message as required, inquiry message to described public information demand, customer location and surrounding environment inquiry message, described wireless receipts/transmitting device receives the as required broadcast data packet receiving status information of communication that described mobile radio terminal returns simultaneously, the demand information of described public information, customer location and ambient condition information, and send customer location and ambient condition information to described the first controller (21) and realize that dynamic adjustments distributes to the communication resource of described mobile radio terminal
Under described the first controller (21) control, described first mode selector (11) is periodically monitored the described public information demand information that described wireless receipts/transmitting device receives, initiatively obtain the described public information with a large amount of potential demands from described watch-dog and described cellular communications networks, described demand information and public information are sent to described memory device, stores, the public information that demand is not high sends to described mobile radio terminal by general communication mode, with the broadcast data packet receiving status information, the public information that customer position information and demand are high sends to described broadcasting equipment at next cycle;
Described broadcasting equipment, link to each other with radio network, described communication equipment, described differential GPS base station and described watch-dog, and can send broadcast singal to described mobile radio terminal, inside is contained at least: the second mode selector (12), forward error correction coder, modulator, up-conversion and radiating circuit, and second controller (22), wherein:
The second mode selector (12)
Be provided with: the input that receives the multimedia broadcast signal of radio network, from the reception broadcast data packet receive status information of described the first controller (21) by described first mode selector (11) transmission, the input of customer location and environmental information and described public information, the reception update information input of described differential GPS base station, reception stream of people condition information input from described watch-dog, preference pattern and reception working signal input from described second controller (22), also be provided with: export the output that sends the code stream of broadcast message under the current broadcast pattern to described forward error correction coder, to the transmission broadcast data packet acceptance state information of described second controller (22) output, customer location and ambient condition information and the output that comprises the described public information of stream of people's situation;
Forward error correction coder
Be provided with: the input that receives the code stream of broadcast message under the current broadcast pattern, the input of the received code parameter that is used for raising multi-media broadcasting service quality that described second controller (22) sends, also be provided with: the output of the transmission code stream of process coding
Modulator
Be provided with: the input of the reception modulation parameter that is used for raising multi-media broadcasting service quality that described second controller (22) sends, code stream input behind described reception forward error correction coder coding, also be provided with: send the multimedia broadcast signal output after modulating
Up-conversion and radiating circuit
Be provided with: the input of the reception frequency allocation information of described controller output, the receiving multimedia broadcast signal input part after the described modulation also is provided with: send the output of broadcast singal to mobile radio terminal,
Second controller (22)
Be provided with: from the input of broadcast data packet receiving status information, customer location and the ambient condition information of described reception the second mode selector (12), also be provided with: send preference pattern and working signal output to described transmission the second mode selector (12), the output of the coding parameter that sends to the forward direction error correcting encoder, the output of the modulation parameter that sends to modulator, the output of the frequency allocation information that upconvert and radiating circuit send;
Described broadcasting equipment is carried out the broadcast mode that described second controller (22) is set according to the following steps:
After described broadcasting equipment started, described controller was selected information to described the second mode selector (12) transfer mode;
Described the second mode selector (12) is judged the current broadcast mode realized of needing: if the general broadcast pattern is then carried out forward error correction coding, sent information according to the Da Qu broadcast mode by the frequency range of distributing to the multimedia broadcasting after modulating, upconvert to radio-frequency head the multimedia broadcast signal code stream of radio network; If on-demand broadcasting pattern, the pattern control word that then provides according to described controller is carried out on-demand broadcasting, and the content of on-demand broadcasting is from the error correction information of the described public information of communication equipment, differential GPS base station and from stream of people's condition information of described watch-dog;
According to described controller to broadcast data packet receiving status information, customer location and ambient condition information dynamic adjustments broadcast resource from described the second mode selector (12), if can not satisfy the service quality QoS of multi-media broadcasting service guarantees, then adjust the parameter that comprises broadcast rate, modulation system, error correction coding rate, again through going out with the band transmit that is assigned to after forward error correction coding, the modulation;
Described differential GPS positioning reference station, link to each other with broadcasting equipment, be used for to calculate and the difference position error correction at place is sent to described mobile radio terminal by broadcasting equipment, to the error correction that described mobile radio terminal provides local differential GPS to locate, increase the positioning accuracy of dense population;
Described mobile radio terminal, carried by the user, the environment cognitive device that includes radio communication device, broadcast receiver, differential GPS client and comprise at least the electromagnetic environment monitor instrument, be used for generally communicating by letter and communicating by letter as required with described communication equipment, receive general broadcast and on-demand broadcasting that broadcasting equipment sends; In the described as required communication, receive the descending inquiry message of broadcasting-quality, public information demand, customer location and the surrounding environment of described communication equipment, and send to described communication equipment with current broadcast quality, public information demand information, user's current location and ambient condition information are up; In the described on-demand broadcasting, receive public service information, stream of people's condition information from described broadcasting equipment, come the position error update information of self-differential GPS, revise user's current location information;
Described watch-dog comprises a video camera at least, connects communication equipment and broadcasting equipment, be used for the local public information that comprises stream of people's situation of monitoring, and the described public information that will obtain sends to described communication equipment and broadcasting equipment.
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| CN105722023A (en) * | 2014-12-04 | 2016-06-29 | 中国电信股份有限公司 | Equipment for positioning of mobile terminal, mobile terminal, system, and method |
| CN104703133B (en) * | 2015-02-26 | 2018-02-16 | 鞠可一 | A kind of method that anti-lost contact system of intelligence realizes the anti-lost contact of intelligence |
| US10362587B2 (en) | 2015-09-24 | 2019-07-23 | Motorola Solutions, Inc. | Method of dynamically assigning a quality of service |
| JP6938969B2 (en) * | 2017-03-07 | 2021-09-22 | 富士フイルムビジネスイノベーション株式会社 | Environmental measurement systems and programs |
| US11553299B2 (en) | 2017-05-05 | 2023-01-10 | Telefonaktiebolaget Lm Ericsson (Publ) | First network node, second network node, wireless device and methods therein for handling broadcast information |
| CN110072187B (en) * | 2019-04-19 | 2020-05-15 | 深圳思凯微电子有限公司 | Method and device for distributing and receiving differential data |
| CN110366105A (en) * | 2019-08-09 | 2019-10-22 | 北京海益同展信息科技有限公司 | Ultra wide band location method and device |
| CN111930524B (en) * | 2020-10-10 | 2021-02-12 | 上海兴容信息技术有限公司 | Method and system for distributing computing resources |
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