CN1798371A - Structure of layered wireless access network, and implement method - Google Patents

Abstract

The invention consists of a wireless access sub network used to implement wireless access and a management control sub network used to manage and control the wireless access sub network. The method includes following steps: the wireless digital broadcast layer located at upper layer broadcasts synchronizing and control messages to the wideband wireless bearer layer located at intermediate layer, the mobile communication layer located at lower layer, and all kinds of terminal covered by those layers and cooperating with one or more layers in working; makes the synchronous measurement and adjustment for the network above; measures the difference between the arrival times in mobile communication layer by using fix time slot; in term of the fix time slot, implements the dynamical allocation and multiplexing for frequency spectrum in order to locate the mobile station.

Description

A kind of layering wireless accessing network structure and implementation method

Technical field

The present invention relates to wireless communication field, relate in particular to layering wireless accessing network structure and its implementation.

Background technology

(DVB, DAB) professional fusion professional with wireless telecommunications (honeycomb and non-honeycomb) and that mobile Internet (INTERNET) is professional can provide professional, utilize frequency spectrum more efficiently wireless digital broadcasting more neatly, has huge market prospects.And professional fusion will cause the fusion of network and the fusion of frequency spectrum, i.e. the change of spectrum reuse mode and spectrum allocation may mode.

Integrated services mainly concentrate in some sub-projects under the IST of European Union (the Information Society Technologies) project, are that the IST project of CISMUNDUS (Convergence of IP-basedServices for Mobile Users and Networks in DVB-Tand UMTS Systems) has been big quantity research ISTProjectCISMUNDUS-Deliverable 9 IST-2000-29255 Field Test Results andDemonstration to the integrated services of DVB and UMTS/GPRS/WLAN as code name).The research emphasis of integrated services concentrates on following two aspects:

1) the mobile communication ability of extended wireless digital broadcast network DVB-T, as increasing mobile switching capability for the DVB-T system, increase the ability of data broadcasting for DVB-T, be the broadcast-capable of DVB-T increase towards portable terminal, for DVB-T increases backward channel etc., realize by UMTS, GPRS, WLAN;

2) the multimedia broadcasting ability of expansion UMTS as increase the broadcast-capable towards multiple spot for UMTS, increases the broadcast-capable of facing area for UMTS.

Research to above-mentioned integrated services directly causes network integration technology and frequency spectrum integration technology, i.e. the proposition of the change of spectrum reuse mode and spectrum allocation may mode.Realize that honeycomb and digital broadcasting service merge new network structure, spectrum reuse technique, the frequency spectrum dynamic assignment technology of being mainly concerned with.The present situation of these technology is as follows:

1) the existing network configuration that realizes integrated services

In informationized society technology (IST) research that European Union's the 5th framework (FP5) is supported, embodied a concentrated reflection of the result of study of Europe in DVB and wireless communication networks fusion: as code name is SAMBITS (Advanced Multimedia Broadcast and IT Services), FLOWS (FlexibleConvergence of Wireless Standards and Services), how OverDRiVE projects such as (Spectrumefficient uni-and multicast services Over Dynamic multi-Radio networks) is to having done comparatively comprehensively discussion with digital broadcasting (particularly DVB) and the relevant issues that the Internet/WLAN/UMTS/GPRS/4G/5G merges, to several schemes that the network configuration that realizes many net fusions provides, see IST-2001-35125 (OverDRiVE) D09 Concepts for Mobile Multicast in HybridNetworks as project OverDRiVE.These network configurations all are from realizing DVB and wireless communication networks in the angle proposition that has complementary functions, as utilize UMTS to expand the professional ability of DVB as the backward channel of DVB, and UMTS is used for translator unit DVB content; DVB is as the expansion of UMTS multicast business etc., and a common feature of these structures is the combinations that lay particular emphasis between the code stream distribution network of the core net that realizes UMTS and DVB, lacks the consideration to air interface fusion problem.

A～c is present three kinds of typical network configurations that realize that digital broadcasting combines with the honeycomb mobile communication among Fig. 1.

A is a kind of structure of utilizing complementary network (OverDRiVE network) to realize interoperability between heterogeneous networks among Fig. 1, OverDRiVE network is as terminal service provider, service content provider offers OverDRiVE network with contents directory, for the user, OverDRiVE network is the service provider, OverDRiVE network plays the effect of intermediary, and OverDRiVE network is unique access point concerning terminal temperature difference.

The complementary network scheme realizes the loose couplings between heterogeneous networks, and operator and network configuration all have stronger independence.

The network configuration of b is the close coupled system that realizes that digital broadcasting combines with the honeycomb mobile communication among Fig. 1, the integrated all wireless systems of this structure, and do not need third party's network.This mode is applicable to that an operator has a plurality of different wireless networks or the partnership of good cooperation is arranged.A kind of close coupling structure is that DVB-T is arranged in UMTS, and DVB-T is connected on the core net of UMTS as an additional unidirectional descending RAN.The user does not determine to select whether to use DVB-T, and by the QoS decision of core net according to user's request.

B in Fig. 1, SGSN have several DVB-T-IP gateways, for DVB-T carries out control and data processing.A broadcast cell has a DVB-T-IP gateway, and each SGSN can serve a plurality of broadcast cells.HLR comprises the DVB-T parameter of requirement, and GGSN must know the bandwidth that broadcast cell can be used.The major advantage of this structure is: the desired input of most management and group (GroupManagement) is provided by UMTS, is provided by HLR and SGSN especially.Group Management can easily be integrated in the system, does not need duplicate resource, as being provided with USR (User and Services Register: storage user and professional relevant information) and HLR database simultaneously.

C is a kind of balanced structure of compromising at the compact structure shown in loose type structure shown in a and the b among Fig. 1, in balance coupling framework, has added interworking (IW) function, as the contact of different access networks.All connecting systems are all come into contacts with IW, and IW can see the IP server as the information interaction between system.In the structure of figure below, IW must support the locomotive function of DVB-T minizone.

IW or need the control of all operator and monitoring or by third party's control and monitoring, balance coupling framework is because its flexibility and extensibility increase new system and can not impact existing system, so can be considered best structure.But this structure needs Access Network operator to share a common database, has lost some independence, is fit to an operator and has a plurality of different Access Networks, or firm cooperative relationship is arranged between different operators.

To sum up, the characteristics of loose coupling are: (1) keeps independence; (2) need duplicate some Internet resources; (3) rely on the intermediary of third party as different Access Networks; (4) efficient is not high, but keeps independence and flexibility.

The characteristics of close coupling and balance coupling are: (1) needs the firm cooperative relationship between operator; (2) provide effective resource utilization, but lose some flexibilities; (3) IW of balance coupling is independent of each Access Network, has increased some independence.

2) existing frequency spectrum fusion method

, discuss and mainly concentrate on the frequency spectrum fusion that coexistence Network Based promptly suppresses adjacent-channel interference in the research to the fusion of DVB and honeycomb mobile communication at ETSI and 3GPP.The discussion of this respect referring to:

300 No. 744 agreements of EN (ETSI, EN 300 744 Digital Video Broadcasting (DVB) in the digital video broadcast terrestrial standard of ETSI (ETSI:European Telecommunications StandardsInstitute) and in August, 1997 promulgation; Framing structure, channel coding and modulation for digital terrestrial television, EuropeanStandard, August 1997; )

The technical specification that 3G (Third Generation) Moblie normal structure 3GPP (3G Partnership Project) provides (, TS 25.101 Technical Specification Group Radio Access Networks; UERadio Transmis sion and Reception (FDD), Technical Specification, March2001-06-29; 3GPP, TS 25.104 Technical Specification Group Radio AccessNetworks; UTRA (BS) FDD; Radio transmission and Reception, TechnicalSpecification, March 2001-06-29; )

These are discussed and just will solve the internetwork interference problem of DVB radio network and UMTS, its prerequisite is that these network works are at different frequency bands or adjacent frequency band, as shown in Figure 2, just discuss and how between adjacent frequency band, to arrange different business transmission, ensureing under the complementary prerequisite of disturbing of channel the simplified system design.

Prior art also has from the angle of channeling to be studied the fusion that DVB and honeycomb move letter, the method of honeycomb mobile communication complex digit broadcasting frequency spectrum has as shown in Figure 3 been proposed, its basic ideas are to be to be subjected to this frequency to disturb minimum zone in the equilateral triangle center that is linked to be with frequency word broadcast cell, and multiplexing this broadcasting frequency can obtain higher spectrum efficiency in this zone.

3) existing frequency spectrum dynamic assignment technology

The basic ideas of existing dynamic frequency spectrum deployment technology are: the network that different business is provided to the demand of frequency spectrum in time be different on the space, utilize the difference of heterogeneous networks to spectrum requirement, between the different business network, carry out the dynamic spectrum allotment, promptly the network that the temporary transient unnecessary bandwidth of certain network is allocated to the frequency spectrum anxiety uses, and reaches making full use of frequency spectrum resource with this.

Shown the situation of carrying out dynamic frequency spectrum deployment between DVB-T and the UMTS as shown in Figure 4, time period between T1～T3, UMTS is professional constantly to be increased, and constantly reduces and DVB-T is professional, during this period of time, the remaining frequency spectrum of DVB-T is constantly allocated to the UMTS system used; At time period T4～T5, UMTS is professional constantly to be reduced, and constantly increases and DVB-T is professional, during this period of time, the remaining frequency spectrum of UMTS is constantly allocated to the DVB-T system use.

Also have some technology solve more multisystem (UMTS, GSM, DVB-T, DAB-T, GPRS) the frequency spectrum dynamic assignment between, its basic ideas are with shown in Figure 4 identical.

4) the existing hierarchical network architecture relevant with this patent

U.S. Patent application, the document of application number 20010022781A1 have provided the hierarchical network architecture that a kind of comprehensive realization wireless digital broadcasting and content-on-demand combine, and this structure as shown in Figure 5.In the network configuration that this patent application provides, include regional transmitter (or master transmitter), local transmitter (or auxilliary transmitter) 1～3, portable terminal 1～2 provides the server of broadcasting and on-demand content to form.

In the scope that a master transmitter covers, there are several auxilliary transmitters greater than auxilliary transmitter in the master transmitter area coverage.The shared frequency of master transmitter and auxilliary transmitter, under the synchronizing information control in the compound frame that master transmitter sends, master transmitter, auxilliary transmitter and travelling carriage are according to the time slot collaborative work of dividing.The working time slot that auxilliary transmitter is determined oneself by control in the compound frame of master transmitter transmission and identifying information, auxilliary transmitter can provide towards the broadcasting service of sub-district and terminaloriented, towards the corresponding different time slot of the broadcasting service of sub-district and terminaloriented, the time slot position of these two kinds of different business relies on control and the identifying information in the Frame of assisting the transmitter emission to determine.Master transmitter is coordinated the working time slot between master transmitter and the auxilliary transmitter, the working time slot of coordination terminal by the control and the identifying information that send in its compound frame; Control and identifying information indicating mobile terminal that auxilliary transmitter sends go to receive its needed business tine in specific time slot.

Adopt satellite positioning signal to realize synchronously between master transmitter, the auxilliary transmitter, also can realize synchronously by the synchronizing signal that cable network transmits.The area flag signal that the auxilliary transmitter that travelling carriage receives according to oneself sends---and the corresponding specific code word in zone is determined the position of oneself and is provided the auxilliary transmitter of service for it.When travelling carriage need receive professional on other frequencies, need be at satellite fix, the network as GPS on down auxiliary and that frequency is set up synchronous.

Travelling carriage can send service request to server by setting up logical feedback channel between the server of wired or wireless mode and content supplier 1～2.Master transmitter, auxilliary transmitter, travelling carriage are determined the home address of oneself by the address mode that adopts in the IP agreement, so that realize the addressing in professional the transmission.

For fear of the interference between the business of different auxiliary transmitter emission, this invention points out that it is enough big that the distance between each auxilliary transmitter must keep, and as shown in Figure 5, the coverage of each auxilliary transmitter can not be overlapping.

This patent has emphasized that service request signal can deliver to service providing server by wireless network or wired network, still, does not provide concrete implementation method.

5) existing network simultaneous techniques

Network synchronization technique in the cellular mobile communication is divided into two big classes, and a class is the GPS simultaneous techniques, and this technology is extensive use of in communication systems such as GSM/IS95; One class is to utilize cable network to realize synchronously, has adopted this technology to realize coarse synchronization between the base station as WCDMA (FDD).

Digital broadcasting generally use at present GPS synchronously when realizing single frequency network between the different broadcast transmitters synchronously.

In the TDD communication system, as, TD-SCDMA, thereby in order to reduce to protect the spectrum efficiency of time slot safeguards system, when requiring downlink transfer between the adjacent different base station, and keep between the different terminals when up good synchronously.In the TD-CDDMA system, the synchronous employing between the base station be the GPS technology, the synchronous employing between the travelling carriage be based on RTT (Round Trip Time) measuring technique.

6) existing Mobile Location Techniques

The Mobile Location Techniques that adopts in the cellular mobile communication of prior art mainly contains 4 kinds: 1) sub-district ID technology, the characteristics of this location technology are that method is simple, be easy to realize, but positioning accuracy are very poor, can only know that travelling carriage is to be in which sub-district, be difficult to further improve precision; 2) AGPS location technology, just utilize the GPS receiver of Cellular Networks in being installed in travelling carriage to transmit the supplementary that the GPS location needs, as search window of satellite-signal etc., GPS receiver on the auxiliary moving platform is realized the location fast, the characteristics of this localization method are the positioning accuracy height, in most cases error radius is in 30 meters, and still this method is difficult to be applied to the location of indoor travelling carriage; 3) TDOA location technology, just travelling carriage is following assisting of network side, RTD measurement between the different base station that obtains by OTDOA that travelling carriage is obtained and network side combines, calculate the time of advent poor (TDOA) between serving BS and the neighbor cell base station, utilize the location estimation of hyperbolic fix principle realization then to travelling carriage, the characteristics of this localization method are moderate accuracy, in most cases positioning accuracy can be in 70 meters, and both be applicable to and also be applicable to indoor positioning in outdoor location; 4) smart antenna location, by the estimation of array antenna realization to the travelling carriage orientation angles, obtain the distance of travelling carriage by the RTT measurement to serving BS, both are in conjunction with the position of determining travelling carriage, the characteristics of this method are to realize location, single base station, but positioning accuracy is difficult to ensure under non-visual environment.

Said method 1), 2), 3) be the localization method of stipulating in the WCDMA agreement, method 4) be the method for stipulating in the TD-SCDMA agreement.

Three main aspects that relate to for integrated services: network configuration merges, frequency spectrum merges, the frequency spectrum dynamic assignment, and all there is deficiency separately in prior art.

The topmost shortcoming of existing network infrastructure integration technology is: only pay attention to the discussion of the core network architecture of suitable integrated services, do not take all factors into consideration wireless access network and merge the problem relate to, as change that the wireless accessing network structure that integrated services cause is not discussed, the frequency spectrum that integrated services cause is not discussed is merged problem.

The shortcoming of existing frequency spectrum integration technology is: the frequency division that only focuses on frequency spectrum merges the technical problem that relates to, as UMST and DVB-T when digital broadcasting and radio communication are used different frequency range respectively coexistence problems and UMTS to the spatial reuse problem of DVB-T frequency, lack discussion for time-division frequency spectrum fusion problem more flexible and that may have more spectrum efficiency.The major defect that frequency division merges is to need extra boundary belt expense, has caused frequency spectrum waste.Can further improve the channeling effect though DVB that ERISSON proposes and honeycomb are reused the method for frequency spectrum, the multiplexing coefficient of described method is still lower, has only (1/7) * 2, and network planning complexity;

The shortcoming of existing dynamic frequency spectrum deployment technology is: existing dynamic frequency spectrum deployment is under the frequency division systems, divide the frequency spectrum dynamic assignment between frequency band realization digital broadcasting and the radio communication, this different system is according to the pattern of frequency division work, be not easy to realize the dynamic assignment of frequency spectrum, this has also just limited the service efficiency of frequency spectrum.

The hierarchical network architecture that a kind of comprehensive realization wireless digital broadcasting that U.S. Patent application application number 20010022781A1 provides and content-on-demand combine, on its purpose and technical scheme, it is a kind of problem that solves professional program request in the radio network, can't solve the problem that the fusion of mobile communication and digital broadcasting faces, as, 1) this invention is just discussed to transmitter, and transmitter can't be realized the two-way link that mobile communication needs; 2) communication need realize the continuous covering of WAP (wireless access point) to the zone with the fusion of broadcasting, and the transmitter schemes that the present invention provides can't realize continuous covering; 3) it is synchronous that the fusion of communication and broadcasting needs the uplink downlink on the air interface between each access point (or base station) of strictness more, and this invention can't realize; 4) communication needs air interface to adopt the technology of spectral efficient more with the fusion of broadcasting, and the prerequisite that only in this way just can neither reduce the capacity (perhaps can also improve) that is used for broadcasting service in existing broadcast spectrum the inside issues the capacity that uses for mobile communication that excavates.

Therefore, also there is defective in prior art, and awaits improving and development.

Summary of the invention

The object of the invention is to provide a kind of layering wireless accessing network structure and implementation method, merge the major technique aspect that relates at Network, the above-mentioned prior art problem that exists in network configuration fusion, frequency spectrum fusion, the frequency spectrum dynamic assignment, provide a comprehensive scheme that solves integrated services, the network integration, frequency spectrum fusion, frequency spectrum dynamic assignment problem, it provides the layer-specific access web frame of a kind of comprehensive realization digital broadcasting and mobile communication business fusion; Provide a kind of spectrum reuse method based on this access network architecture; Provide a kind of method of the frequency spectrum dynamic assignment based on this access network architecture; Provide a kind of air interface synchro measure and method of adjustment based on this access network architecture; Provide a kind of mobile location method based on this access network architecture.

Technical scheme of the present invention is as follows:

A kind of layering wireless accessing network structure, wherein, it comprises the wireless access subnet of realizing wireless access, realizes the management control subnet two large divisions to integrated management of wireless access subnet and control.

Described layering wireless accessing network structure, wherein, described wireless access subnet by the broadband wireless supporting layer of the wireless digital broadcasting layer that is in the upper strata, the layer that mediates, be in the mobile communication layer of bottom, and be present in these aspect coverages, can form with the various terminals of one or more aspect cooperatings in these aspects;

Described management control subnet comprises at least: a broadcasting service services quality monitoring unit, a broadcasting service spectrum requirement computing unit, a business and spectral coordination unit, an Access Network Comprehensive Control unit, a Network Synchronization quality-monitoring and coordination unit, a radio bearers comprehensive detection unit, several databases, several routers, plurality of media gateway.

Described layering wireless accessing network structure, wherein, described wireless digital broadcasting layer comprises at least one digital broadcast transmitting station; Described broadband wireless supporting layer comprises at least one wireless access base station; Described mobile communication layer comprises the mobile communication base station that several become continuous covering state, perhaps comprises mobile communication base station and several wireless wide area network base stations that several become honeycomb to distribute; Described terminal comprises wireless router and gateway, digital broadcasting transmitter, moves or fixed terminal.

Described layering wireless accessing network structure, wherein, described terminal adopts single antenna single-channel receiver and transmitter architecture, and described digital broadcast transmitting station employing multichannel multiple antenna transmitter, constitutes many single-input single-output system (SISO system)s.

Described layering wireless accessing network structure, wherein, described terminal adopts many antenna multichannel Receiver And Transmitter structure, and the multichannel multiple antenna transmitter is adopted, the formation multi-input multi-output system in described digital broadcast transmitting station.

Described layering wireless accessing network structure, wherein, the single channel single antenna transmitter is adopted at described digital broadcast transmitting station.

Described layering wireless accessing network structure, wherein, described wireless access base station is made up of transmitter and receiver two parts, and transmitter and receiver is respectively applied for realizes communication system down link link and up link; The transmitter and receiver of described wireless access base station all adopts many antenna multichannel structure, matches with the described terminal of described many antenna multichannel of employing transmitter and receiver structure, constitutes multi-input multi-output system; Match with the described terminal of described employing single antenna single channel transmitter and receiver structure, constitute many single-input single-output system (SISO system)s.

Described layering wireless accessing network structure, wherein, described mobile communication base station is made up of transmitter and receiver two parts, and transmitter and receiver is respectively applied for realizes communication system down link link and up link; Described transmitter and receiver all adopts many antenna multichannel structure, matches with the described terminal of described many antenna multichannel of employing transmitter and receiver structure, constitutes multi-input multi-output system; Match with the described terminal of described employing single antenna single channel transmitter and receiver structure, constitute many single-input single-output system (SISO system)s.

Described layering wireless accessing network structure, wherein, treatment technology, hierarchical coding technology improved the spectrum efficiency of digit broadcasting system when described multi-input multi-output system and many single-input single-output system (SISO system)s adopted sky.

Described layering wireless accessing network structure, wherein, described when empty treatment technology comprise the Space Time Coding technology of Alamouti algorithm and the space multiplexing technique of V-BLAST algorithm.

Described layering wireless accessing network structure, wherein, described broadcasting service services quality monitoring unit is used to collect, handle the network service quality information of being come by the network node collection;

The described broadcasting service spectrum requirement computing unit flow of the broadcasting service of digital broadcast transmitting station emission as required calculates the bandwidth that the digital broadcast transmitting station needs, and this bandwidth is as a foundation of distributing frequency spectrum between digit broadcasting system and mobile communication system;

Business and the spectral coordination between digit broadcasting system and the mobile communication system realized in described business and spectral coordination unit;

Business and spectral coordination result that described Access Network Comprehensive Control unit provides according to professional and spectral coordination unit, the progress of work between the different working modes between the different aspects of described wireless access subnet, in same aspect is coordinated and wireless resource scheduling;

Described Network Synchronization quality-monitoring and coordination unit are used for receiving and handle in difference data correlation time between the adjacent digital broadcast transmitting of the wireless digital broadcasting layer station of being sent here by the wireless access subnet, the mobile communication layer in difference data correlation time between adjacent base station, the broadband wireless supporting layer difference data and the uplink synchronous quality information sent here by some node in wireless access subnet correlation time between adjacent base station, and the synchronous regime of network is adjusted;

Described radio bearers comprehensive detection unit is used for obtaining the radio bearers information that each base station is sent here in each base station of broadband wireless supporting layer, the mobile communication layer, and these information are used for that Access Network is carried out Comprehensive Control and use.

Described layering wireless accessing network structure, wherein, described business and spectral coordination unit are according to digit broadcasting system needs loaded service amount, the service quality of the digital broadcast networks that broadcasting service services quality monitoring unit provides, determining need be by the net loaded broadcasting service at specific region or particular group of mobile communication, need be by the net loaded demand (telecommunication) service of mobile communication, and under the corresponding business distribution condition, according to the result of calculation of business proportion between digit broadcasting system and the mobile communication system and broadcasting service spectrum requirement computing unit, determine two spectrum allocation may ratio and quantity between the system.

Described layering wireless accessing network structure, wherein, described business and spectral coordination unit are given communication service more spectrum allocation may in the period that broadcasting service descends; In the period that broadcasting service rises, give broadcasting service more spectrum allocation may.

Described layering wireless accessing network structure, wherein, described quality of service information comprises the information of the coverage condition of weighing broadcast singal, comprises the position and the temporal information of signal interference ratio and signal interference ratio correspondence.

Described layering wireless accessing network structure, wherein, the described progress of work is coordinated and wireless resource scheduling comprises: send the instruction of specifying its time slot width, send the instruction of specifying its instruction of carrying out cell breathing, sending its uplink and downlink timeslot method of salary distribution of appointment to broadband wireless supporting layer, the mobile communication layer of wireless access subnet.

Described layering wireless accessing network structure, wherein, described synchronous regime adjustment to network comprises: 1) to adjustment synchronous between the digital broadcast transmitting station; 2) to the poor adjustment correlation time between adjacent base station in the broadband wireless supporting layer; 3) to the poor adjustment correlation time between adjacent base station in the mobile communication layer.

Described layering wireless accessing network structure, wherein, the described method that the synchronous regime of network is adjusted also comprises: with the global position system gps time on the digital broadcast transmitting station is reference, according between two adjacent digital broadcast transmitting stations that measure correlation time difference size, according to predetermined step-length, be in the time delay at the digital broadcast transmitting station of emission state in advance by increase, or, progressively adjust to the correlation time difference less than in the scope that requires by reducing to be in the time delay at digital broadcast transmitting station of emission of lagging behind.

Described layering wireless accessing network structure, wherein, described each functional unit can be present among the network with independent entity, also can decompose in each network entity and realize.

A kind of implementation method of layering wireless access network, it may further comprise the steps:

A) the wireless digital broadcasting course that is in the upper strata mediate layer the broadband wireless supporting layer, be in the mobile communication layer of bottom, and be present in these aspect coverages, can with the various terminal broadcast synchronization and the control information of one or more aspect cooperatings in these aspects;

B) described Network Synchronization measurement and method of adjustment comprise the steps: b1) observation arrival time difference measurements; B2) correlation time, difference was calculated; B3) correlation time, difference was adjusted;

C) method that realizes observation arrival time difference measurements in the described mobile communication layer realizes by localization time slot, comprises that localization time slot structure, localization time slot insert, the localization time slot spatial reuse;

D) realize frequency spectrum dynamic assignment and multiplexing according to described time slot location;

E) mobile location method is adopted following steps: e1) travelling carriage is observed the arrival time difference measurements; E2) carrying out location of mobile station estimates.

Described implementation method, wherein, described synchronously and control information comprise: the 1) code at digital broadcast transmitting station is used for difference measurements correlation time between discriminating digit broadcast transmission station and different digital broadcast transmission station; 2) give the length of different layers assignment time slot and putting in order of these time slots, be used to control the job order and the working time slot of wireless digital broadcasting layer, broadband wireless supporting layer, mobile communication layer.

Described implementation method, wherein, the broadband wireless supporting layer of the described wireless digital broadcasting layer that is in the upper strata, the layer that mediates, the mobile communication layer that is in bottom use satellite positioning signal or ground network to transmit signal and realize a layer inter-sync, and by correlation time difference measurements and coordinating realize antenna actinal surface place synchronous between layer interior different transmitters.

Described implementation method, wherein, synchronous in order to realize the uplink downlink between wireless access base station and mobile communication base station or mobile communication base station and the mobile communication base station, transmission identification information and the control information in the own working time slot of interlayer synchronizing information broadcasting of described wireless access base station or mobile communication base station.

Described implementation method, wherein, described identification information and control information comprise: the identifying information that sends sign oneself; Send the positional information of uplink and downlink timeslot; The sending time slots length information.

Described implementation method, wherein, in the described wireless sub network, for realize between mobile communication base station and the described terminal the uplink and downlink communication link synchronously, the mobile communication base station is in oneself working time slot of interlayer synchronizing information broadcasting, in the coverage of oneself, send identification information and control information, comprise identifying information that sends sign oneself and the positional information that sends uplink and downlink timeslot.

Described implementation method, wherein, described localization time slot building method comprises: the beginning part of a localization time slot is used for emission expression transmitting base station code signal, the remainder of localization time slot is used to launch communication data.

Described implementation method, wherein, described localization time slot building method is: localization time slot and other business time-slot are stitched together constitutes a compound frame; Several compound frame constitute a superframe.

Described implementation method wherein, constitutes a superframe by 7 compound frame.

Described implementation method, wherein, described localization time slot method for spacial multiplex is: the unlatching of 7 localization time slots that comprise in the superframe is regarded as seven constantly by the frequency of spatial reuse, according to the unlatching moment of Cellular Networks to multiplexing these 7 localization time slots of the mode of channeling.

Described implementation method, wherein, the unlatching of localization time slot is meant and neither sends the base station code signal in localization time slot in the described localization time slot method for spacial multiplex, do not send service signal yet, and the terminal that is used in this base station range is measured the code signal of adjacent base station, arrives the time difference to obtain observation.

Described implementation method, wherein, the unlatching of localization time slot is that some localization time slots of comprising in the superframe of the sub-district of its service of covering of same set of emission system emission can only have one at any time and are in opening in the described time slot method for spacial multiplex.

Described implementation method, wherein, the step of described spectrum reuse comprises: need 1) to determine the number of the subsystem of the same frequency band of time division multiplexing, each layer in the system is used as a subsystem processes, promptly is in a plurality of subsystems of one deck and is used as a subsystem processes; 2) estimate the initial bandwidth that each subsystem needs, the combined factors of traffic carrying capacity, ambient interferences, transmission mode is considered the calculating of laggard line frequency spectrum; 3) determine structure of time slot form and parameter,, determine the form and the parameter of structure of time slot according to number, traffic carrying capacity size and the professional QOS requirement of the subsystem of multiplexing same frequency band.

Described implementation method, wherein, the step of described realization frequency spectrum dynamic assignment is: 1) professional monitoring, described broadcasting service spectrum requirement computing unit calculate the bandwidth that digital broadcast transmitting station emission broadcasting service needs in real time, and compare with pre-assigned bandwidth; Described radio bearers comprehensive monitoring unit is collected the radio bearers of wireless access base station and the radio bearers of mobile communication layer in real time, and compares with pre-assigned bandwidth; The load of finding its monitoring when described broadcasting service spectrum requirement computing unit or radio bearers comprehensive monitoring unit in comparison asks described business and spectral coordination unit to carry out spectral coordination and adjustment during greater than predetermined threshold;

2) slot length adjustment: shorten the slot length that idle subsystem takies, strengthen the slot length that busy subsystem takies.

Described implementation method, wherein, described step b1) is during the working time slot of digital broadcast transmitting station, uses wireless access base station and mobile communication base station that the arrival time difference measurements is observed at the digital broadcast transmitting station, obtain one group of observation and arrive the time difference measurements amount;

Described step b2) for utilizing the observation that measures to arrive the time difference measurements amount, and known wireless access base station and mobile communication base station and by the distance between the digital broadcast transmitting station of its measurement, the correlation time that calculates between the different digital broadcast transmission station is poor;

Described step b3) be when described correlation time, difference was greater than the error range that allows, just to adjusting the launch time at respective digital broadcast transmission station, make its correlation time of poor remaining in the error range, concrete method of adjustment is: sluggishness is in the signal sending time at the digital broadcast transmitting station of state relatively in advance, perhaps is in the signal sending time at the digital broadcast transmitting station of state relatively afterwards in advance.

Described implementation method, wherein, described step b1) be during the working time slot of mobile communication base station, perhaps carry out during the BACKHAUL data transmit to the wireless access base station in each mobile communication base station, the arrival time difference measurements is observed to the mobile communication base station in the wireless access base station, obtains observation and arrives the time difference measurements amount;

Described step b2) for utilizing the observation measure to arrive time difference measurements amount and known mobile communication base station and the distance between the wireless access base station, the correlation time that calculates between the different mobile communication base station is poor;

Described step b3) is sent to mobile position estimation center and Network Synchronization quality-monitoring and the coordination unit that is arranged in management and control subnet for these correlation times are poor, be used for mobile position estimation and Network Synchronization adjustment, concrete method of adjustment: sluggishness is in the signal sending time of the mobile communication base station of state relatively in advance, perhaps is in the signal sending time of the mobile communication base station of state relatively afterwards in advance.

Described implementation method, wherein, described step b1) be that the arrival time difference measurements is observed to the wireless access base station in the mobile communication base station during the working time slot of wireless access base station, obtain observation and arrive the time difference measurements amount;

Described step b2) for utilizing the observation measure to arrive time difference measurements amount and known mobile communication base station and the distance between the wireless access base station, the correlation time that calculates between the different radio access base station is poor;

Described step b3) be with these correlation times of poor mobile position estimation center and Network Synchronization quality-monitoring and the coordination unit that is arranged in management and control subnet that be sent to, be used for mobile position estimation and Network Synchronization adjustment, concrete method of adjustment is: sluggishness is in the wireless access signal of base station transmitting time of state relatively in advance, perhaps is in the wireless access signal of base station transmitting time of state relatively afterwards in advance.

Described implementation method wherein, can be used the station symbol signal at digital broadcast transmitting station during described measurement, and that inserts in the digital broadcasting that also can use the digital broadcast transmitting station to send aims at the code signal that observation arrives the time difference measurements design.

Described implementation method, wherein, described step e1) can initiate by network side, also can be by Mobile Origination, but continuous measurement, the measurement that also can happen suddenly is when certain sub-district need be carried out observation that one-time positioning uses and arrived time difference measurements, just make the certain position time slot in the superframe that this sub-district sends enter positioning states, the localization time slot maintenance communications status that this sub-district and this localization time slot are synchronous.

Described implementation method, wherein, described step e1) when in a superframe group, repeatedly locating, in this superframe group, select a plurality of superframes, the localization time slot that starts in these superframes makes it be in positioning states.

Described implementation method, wherein, described step e2) comprising: at first utilize the observation arrival time difference of and the moving table measuring poor of dominant base measurement to calculate the arrival time difference, utilize the hyperbolic location to obtain the location estimation amount of travelling carriage then to the correlation time between the secondary base station.

Described implementation method, wherein, the positioning result that the location estimation result that described localization method obtains obtains with the position result of using arrival direction to obtain, with satellite fix further merges mutually.

Network configuration that described layering wireless accessing network structure of the present invention and implementation method propose has realized the fusion and the frequency spectrum dynamic assignment of digital broadcasting service, mobile communication business, mobile position estimation business, network, frequency spectrum compactly, this network configuration is easy to realize the existing DVB-T of DTB Digital Terrestrial Broadcasting system, ISDB, ATSC standard) and 3G mobile communication system TD-SCDMA system) fusion, this network configuration is easy to realize the fusion of following DTB Digital Terrestrial Broadcasting and mobile communication system.

Synchro measure and synchronization adjustment method under the tdd mode that the present invention proposes can be realized the strict synchronism (being synchronized to the antenna actinal surface) that the conventional synchronization method can't realize; Use has the wireless router of satellite fix timing capability and the gateway communication relays as portable terminal and base station (or wireless access), can significantly improve the uplink synchronous quality of tdd mode lower network, reduces the transmitting power of terminal simultaneously.

The insertion of travelling carriage localization time slot has solved location and the fusion of communicating by letter very compactly with the method for spacial multiplex that localization time slot is in positioning states under the tdd mode that the present invention proposes, realized the unification of navigation system and communication system with the frequency spectrum expense of minimum, the network configuration that the present invention provides is easy to lay, and is easy to dilatation.

Description of drawings

Fig. 1 is the network configuration fusion method schematic diagram of prior art DVB-T and UMTS;

Fig. 2 is the protection frequency band schematic diagram of the FDD mode frequency spectrum share of prior art;

Fig. 3 is a kind of spectrum reuse method schematic diagram of the prior art;

Fig. 4 is a dynamic frequency spectrum deployment method schematic diagram in a kind of prior art;

Fig. 5 is a kind of schematic network structure of realization content-on-demand of prior art;

Fig. 6 is the hierarchical network architecture schematic diagram of a kind of comprehensive realization digital broadcasting of the present invention and mobile communication;

Fig. 7 is the space layout schematic diagram of a kind of wireless access subnet of the present invention;

Fig. 8 is the time slot allocation schematic diagram that frequency spectrum is shared in a kind of three systems of the present invention timesharing;

Fig. 9 is the basic structure of time slot in a kind of TDD of the present invention system, the insertion and the localization time slot spatial reuse schematic diagram of localization time slot.

Specific embodiment

Below in conjunction with accompanying drawing,, will make technical scheme of the present invention and beneficial effect thereof apparent by detailed description to preferred embodiment of the present invention.

A kind of layering wireless accessing network structure of the present invention, the composition of its network and operation principle are as shown in Figure 6, be the layer-specific access web frame that a kind of comprehensive realization digital broadcasting service and mobile communication business merge, it is made up of wireless access subnet 102 and management and control subnet 101 two large divisions.

Consisting of of described wireless access subnet 102:

Described wireless access subnet 102 is by wireless digital broadcasting layer 112, broadband wireless supporting layer 113, mobile communication layer 114, and be present in these aspect coverages, can with the various terminals of one or more aspect cooperatings in these aspects: promptly wireless router among Fig. 6 and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 is formed.

Wireless digital broadcasting layer 112 is made up of one or more digital broadcast transmitting stations 201; Broadband wireless supporting layer 113 is made up of one or more wireless access base stations 202; Mobile communication layer 114 mixes with several wide area network access points 207 by several mobile communication base stations 203 or by several mobile communication base stations 203 and forms, and its a kind of possible space layout as shown in Figure 7.Wherein, the coverage 204 at digital broadcast transmitting station 201 is greater than the coverage 205 of broadband wireless supporting layer 113, and the coverage 205 of broadband wireless supporting layer 113 is greater than the coverage 206 of mobile communication base station 203 and the coverage 208 of wide area network access point 207.

Digital broadcast transmitting station 201 is made up of transmitter, and the transmitter of digital broadcast transmitting station 201 expressions is by two kinds, and a class is the single channel single antenna transmitter; One class is the multichannel multiple antenna transmitter.When adopting the multichannel multiple antenna transmitter, digital broadcast transmitting station 201 and the router that adopts many antenna multichannel Receiver And Transmitter and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 constitutes multiple-input and multiple-output (MIMO) systems, with the router that adopts single antenna single-channel receiver and transmitter and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 constitutes many inputs single defeated (MISO) and goes out system.By taking appropriate treatment technology when empty, as V-BLAST algorithm, Alamouti algorithm etc., and take Space Time Coding and source encoding, combine as the layering source encoding, this MIMO or MISO digit broadcasting system and traditional SISO digit broadcasting system compare, and can improve the spectrum efficiency of digit broadcasting system effectively.The raising of this spectrum efficiency can reduce the bandwidth that digital broadcasting service takies significantly under the prerequisite that guarantees the needed channel capacity of digital broadcasting, the bandwidth of saving is used for mobile communication.

Wireless access base station 202, mobile communication base station 203 are formed by transmitter and receiver two parts, and transmitter and receiver is respectively applied for realizes communication system down link link and up link.Transmitter and receiver in wireless access base station 202, the mobile communication base station 203 all adopts many antenna multichannel structure, this many antenna multichannel Receiver And Transmitter structure and the router that adopts many antenna multichannel transmitter and receiver structure and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 matches, constitute multiple-input and multiple-output (MIMO) system; This many antenna multichannel Receiver And Transmitter structure and the router that adopts single antenna single channel transmitter and receiver structure and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 matches, constitute the single output of many inputs (MISO) systems.By taking appropriate treatment technology when empty, as V-BLAST algorithm, Alamouti algorithm, this MIMO or MISO communication system and traditional SISO communication system relatively can improve the spectrum efficiency of communication system effectively.

Adopt many antenna multichannel system to realize that digital broadcasting and communication system are to realize a key of digital broadcasting service and the shared frequency spectrum of mobile communication business.After improving the spectrum efficiency of digit broadcasting system and mobile communication system effectively by MIMO, MISO technology, can realize that same bandwidth is used by two systems after, not only do not influence one of them power system capacity, might increase its capacity on the contrary.Such as, when average spectral efficiency (ase) is 1bit/s/hz, the wide frequency band of 40MHz is only to transmit the digital broadcast signal of 40Mbps, if treatment technology is brought up to 4bit/s/hz with average spectral efficiency (ase) during by MIMO, MISO system configuration and sky, just can obtain the power system capacity of 160Mbps, if this capacity of mean allocation between digital broadcasting and mobile communication, each system can obtain the capacity of 80Mbps, two systems are by adopting the technology that improves spectrum efficiency, behind multiplexing same section frequency spectrum, Capacity Ratio separately was doubled originally.

Digital broadcast transmitting station 201, wireless access base station 202, mobile communication base station 203 uses IP (Internet Protocal) agreements to realize itself and other unit of network and the transmission of data between nodes, IPV6, MIPV6 and its modified model are the basic agreements of digital broadcast transmitting station 201, wireless access base station 202, mobile communication base station 203 realization mobile managements and RRM.

Wireless router and gateway 122 have the air interface of multimode or software and radio technique realization; have with wireless access subnet of the present invention in the ability that inserts of one or more aspects; also has wireless network by software radio or multimode technology and other types; the ability that communicates as networks such as WLAN, UWB, bluetooths; support the multi-mode air interface to work simultaneously; as, when communicating with network of the present invention, can with other network service.By software radio or multimode technology, wireless router and gateway 122 can also have following one or more abilities: 1) multiple mode of operation is arranged, as FDD/TDD, multiple code modulation mode; 2) by software radio or multimode technology, wireless router and gateway 122 have the ability of spectrum monitoring, promptly as required, signal quality outside its working band and the working band or interference environment are monitored; 3) wireless router and gateway 122 can be supported multiple Radio Link topological structure, as AD HOC under the support of its network supervisor; 4) can and cable LAN, link to each other as vehicle-mounted net, airborne net, carrier-borne net; 4) wireless router and gateway 122 have satellite fix, as GPS or AGPS location/timing function.The wireless router 122 of miniaturization can be the part of a portable terminal.Wireless router and gateway 122 are divided into two big classes, and a class is portable, and this class mobile router and gateway can be used for various mobile platforms and be used for the individual carrying; Another kind of is fixed, this class router and gateway can be used for occasions such as family, office, fixed can be the sensing Netcom letter node of family information collection and transmission, also can be monitoring, the heat transfer agent communication node of certain fixed position, as a communication node at public transport management station, the communication node at hydrologic monitoring station.

Has the wireless router of satellite fix timing capability and gateway 122 communication relays as portable terminal and base station or WAP (wireless access point), this application model can significantly be improved the uplink synchronous quality of tdd mode lower network, reduces the transmitting power of terminal simultaneously.Wireless router and gateway 122 can all carry out relaying to uplink downlink during as repeater, also can only carry out relaying to up link.

Digital broadcasting transmitter 123 is except having traditional broadcast receiving function, also has wireless communication ability, can be by specific air interface, as the WLAN (wireless local area network) among Fig. 6 126, this WLAN (wireless local area network) is made up of littler WLAN (wireless local area network), wireless personal area network, wireless router and gateway 122, and cable network, the functional unit in management described in the Internet among Fig. 6 127 and the present invention and the control subnet 101 communicates as quality of broadcasting service monitoring means 103.

Move or fixed terminal 124 have with wireless digital broadcasting layer 112, broadband wireless supporting layer 113, mobile communication layer 114 in the ability of one or more aspect cooperatings.Move or the another kind of fixed terminal 124 realize be except have with wireless digital broadcasting layer 112, broadband wireless supporting layer 113, mobile communication layer 114 in the ability of one or more aspect cooperatings, also have the ability that communicates with WLAN (wireless local area network) 126 simultaneously.Mobile model mobile or fixed terminal 124 can be personal assistant, notebook computer, mobile phone etc.; The sensing Netcom letter node that fixed mobile or fixed terminal 124 can be family information collection and transmission, also can be monitoring, the heat transfer agent communication node of certain fixed position, as a communication node at public transport management station, the communication node at hydrologic monitoring station etc.

Wireless router and gateway 122, digital broadcasting transmitter 123, moving or fixed terminal 124 can be the single antenna single channel system, also can be many antenna multichannel system.But, wireless router and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 adopt many antenna multichannel system configuration and cooperate corresponding handle when empty after, can obtain better communication efficiency.

Wireless router and gateway 122, digital broadcasting transmitter 123, move or 124 1 kinds of address modes of fixed terminal are to adopt the IP agreement, represent oneself as the address mode of IPV6.When adopting the IP agreement, all support mobile IP protocol, improve version as MIPV6 or its.

The operation principle of described wireless access subnet 102 is:

A. the wireless access subnet is synchronous

Described wireless access subnet 102 be divided into synchronously layer inter-sync be between each base station or the transmitter synchronously, interlayer is that to carry out work, uplink downlink according to the time slot allocation of strictness be wireless access base station 202, mobile communication base station 203, wireless router and gateway 122, digital broadcasting transmitter 123 to different layers synchronously, move or synchronous three main aspects of fixed terminal 124 x times synchronously.

Layer inter-sync: network wireless insert the digital broadcast transmitting station 201 that comprises in wireless digital broadcasting layer 112 that subnet 102 comprises, broadband wireless supporting layer 113, the mobile communication layer 114, wireless access base station 202, mobile communication base station 203 timing and synchronously can be by accomplished in many ways, as use satellite fix, the GPS receiver realizes that perhaps the synchronizing signal that transmits by ground network realizes.

In order further to improve the inter-sync precision of net, need take RTD to measure and the adjustment measure.Between the digital broadcast transmitting station 201, between the wireless access base station 202, synchro measure between the mobile communication base station 203 and adjustment realize by the RTD measurement that describes below, RTD measures and can proofread and correct because the random delay that the discreteness of radio-frequency channel is introduced, can be at satellite fix, on the synchronous basis of GPS, further improve between the digital broadcast transmitting station 201, between the wireless access base station 202, net synchronization capability between the mobile communication base station 203, make Synchronization Control leave the time of antenna actinal surface at signal, thereby further improved the net synchronization capability of wireless access system, improved the stability of system.

Interlayer is synchronous: wireless digital broadcasting layer 112 sends interlayer and wireless router and gateway 122, digital broadcasting transmitter 123, moves or fixed terminal 124 transmission interlayer synchronizing informations 115 to broadband wireless supporting layer 113, mobile communication layer 114.This interlayer synchronizing information 115 is sent by the base station 202,203 of the digital broadcast transmitting station 201 in the wireless digital broadcasting layer 112 in broadband wireless supporting layer 113, mobile communication layer 114.

Interlayer synchronizing information 115 comprises that realization interlayer time slot is according to the rules worked in order and travelling carriage is wireless router and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 is caught the needed pilot signal of required time slot, as, interlayer synchronizing information 115 comprises: the specific high digital broadcast transmitting station of identification when the 1) code at digital broadcast transmitting station 201, this code can be used for measuring RTD between the different digital broadcast transmission station; 2) give the length of different layers assignment time slot and putting in order of these time slots, this information can be used for broadband wireless supporting layer 113, mobile communication layer 114 is determined time slot position and the slot length that oneself is worked, during this information of same by wireless router and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 receptions, be used for determining oneself working time slot and mode of operation, wireless router and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 can be in specific time slot and other network, establish a communications link as the WLAN (wireless local area network) among Fig. 6 126.When the spectrum allocation may of wireless digital broadcasting layer 112 between broadband wireless supporting layer 113, mobile communication layer 114 adjusted, interlayer synchronizing information 115 also correspondingly changes, as the adjustment of slot length and time-slot sequence, to adapt to the needs of dynamic frequency spectrum deployment.

Uplink downlink is divided into synchronously: 1) uplink downlink between wireless access base station 202 and the mobile communication base station 203 is synchronous.This link with the BACKHAUL transmission between wireless access base station 202 and the mobile communication base station 203, RTD between the mobile communication base station 203 measure, communication linkage between wireless access base station 202 and wireless router and gateway 122, the mobile or fixed terminal 124; 2) uplink downlink between the base station outside mobile communication base station 203 and the mobile communication base station 203 is synchronous, realizes AD HOC communication linkage between this base station that is used for synchronously outside mobile communication base station 203 and the mobile communication base station 203; 3) mobile communication base station 203 and wireless router and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 between the uplink and downlink communication link synchronously.

Work in the time slot of distributing to mobile communication layer 114, also can be carried out according to the working method of the base station in the mobile communication layer 114 in wireless access base station 202 in the broadband wireless supporting layer 113 except above-mentioned working method.

Synchronous in order to realize the uplink downlink between wireless access base station 202 and the mobile communication base station, need wireless access base station 202 transmission identification information and control information in the own working time slot of interlayer synchronizing information 115 broadcasting, as, send the identifying information that identifies oneself; Send the positional information of uplink and downlink timeslot; The sending time slots length information.Synchronous in order to realize the uplink downlink between mobile communication base station and the mobile communication base station 203, need mobile communication base station 203 transmission identification information and control information in the own working time slot of interlayer synchronizing information 115 broadcasting, as, send the identifying information that identifies oneself; Send the positional information of uplink and downlink timeslot; The sending time slots length information.For realize mobile communication base station 203 and wireless router and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 between the uplink and downlink communication link synchronously, need mobile communication base station 203 in oneself working time slot of interlayer synchronizing information 115 broadcasting, in the coverage of oneself, send identification information and control information, as, send the identifying information that identifies oneself; Send the positional information of uplink and downlink timeslot; The sending time slots length information.In real system work, also need in the uplink downlink time slot, send the information that is used for assisted channel estimation to improve the efficiency of transmission of uplink downlink.

Finished that the inter-sync of above-mentioned layer, interlayer are synchronous, uplink downlink synchronously after, under the cooperation of following management and control subnet 101, wireless access network 102 i.e. co-ordination in an orderly manner.

B. the correspondence in the wireless access subnet

Broadcast signal streams 116 expression wireless digital broadcasting layers 112 as shown in Figure 6 send to wireless router and gateway 122, digital broadcasting transmitter 123, move or the broadcast singal of fixed terminal 124, comprise service signal and control, identification signal; Communication linkage between communication linkage 120 expression broadband wireless supporting layers 113 and wireless router and gateway 122, the mobile or fixed terminal 124, by this communication linkage 120, broadband wireless supporting layer 113 sends service signal and control, identification signal; Communication linkage 117 is the communication linkages between broadband wireless supporting layer 113 and the mobile communication layer 114, communicates to connect the business datum transmission and the RTD that realize between broadband wireless supporting layer 113 and the mobile communication layer 114 by this and measures; Communication linkage 118 is mobile communication layer 114 and wireless router and gateway 122, move or fixed terminal 124 between communication linkage.Broadcast signal streams 119 expression digital broadcasting transmitters 123 are from mobile communication layer 114 receiving digital broadcast signal, and the wireless access subsystem that the present invention provides is also supported digital broadcasting transmitter 123 and mobile communication layer 114 to set up two-way communication on the principle to get in touch.

C. the support of wireless access subnet to measuring

The basic structure of the time slot of a kind of TDD of the being applicable to system that Fig. 9 has provided that the present invention proposes, the insertion and the localization time slot spatial reuse schematic diagram of localization time slot.The working time slot 407 of the wireless digital broadcasting layer 112 among the figure, the working time slot 408 of broadband wireless supporting layer 113, the working time slot 406 of mobile communication layer 114, localization time slot 405A～G have constituted a compound frame 401, several compound frame 401 constitute a superframe 402,403, and several superframes are formed a superframe group 404.

The number that constitutes the preferable compound frame 401 of a superframe 402,403 is 7, and reason is localization time slot 405A～G of being convenient to like this in the spatially multiplexing superframe.Localization time slot 405A～G forms by the pilot signal of identifying cells number or base station identifier work song time slot with immediately following sub-slots two parts of this pilot signal, and localization time slot has two kinds of operating states: 1) positioning states; 2) communications status.Positioning states is meant that in this localization time slot neither pilot signal transmitted does not send service signal yet, as just the terminal of this sub-district service the time slot that OTDOA measures is carried out in adjacent sub-district; At the communications status of localization time slot, can transmit QOS in the localization time slot and require lower business, as sending picture, the insensitive business of this time delay of note.It is emphasized that in 7 localization time slots in a superframe to have a time slot to be in positioning states, other six time slots all will be in communications status.The pilot signal that sends in the pilot signal sub-slots both can be used for the communication objective of this sub-district, and the OTDOA in the time of also can being used for other cell localization measures.

The method for spacial multiplex of 7 localization time slot 405A～G and the frequency space multiplexing method of honeycomb are similar in superframe: the arrangement that interior localization time slot 405A, 405B, 405C, 405D, 405E, 405F, 405G of superframe is in positioning states among Fig. 9 (a) is shown in Fig. 9 (b), and promptly sub-district A, the B of 7 cellular layouts, C, D, E, F, the corresponding respectively localization time slot 405A of G, 405B, 405C, 405D, 405E, 405F, 405G are in positioning states.

Arrival direction DOA (Direction Of Arrival) measurement function is realized by its array antenna structure that adopts in wireless access base station 202 and mobile communication base station 203, and DOA measuring amount and RTT (Round Trip Time) measuring amount combines and realizes wireless router and gateway 122, moves or the location of fixed terminal 124; Wireless router and gateway 122, move or fixed terminal 124 is communicated by letter except finishing, the broadcast receiving function, also need to support serving BS is comprised that the observation between wireless access base station 202 and mobile communication base station 203 and other base station arrives time difference OTDOA (Observed Time Difference Of Arrival) measurement function, OTDOA measuring amount and RTD measuring amount combine as the basis of hyperbolic fix.Access Network shown in Figure 6 can use DOA location, TDOA location or AGPS location separately, perhaps also can comprehensively use one or more position, the translational speed information of travelling carriage more accurately of obtaining in DOA location, TDOA location and the AGPS location, utilize these information to realize uplink synchronous accurately, or utilize these information to determine optimum transmission means.

The composition and the operation principle of described management and control subnet:

Management and control subnet 101 are made up of broadcasting service services quality monitoring unit 103 shown in Figure 6, broadcasting service spectrum requirement computing unit 104, business and spectral coordination unit 105, Access Network Comprehensive Control unit 106, Network Synchronization quality-monitoring and coordination unit 107, radio bearers comprehensive detection unit 108, several databases 109A, 109B, several router ones 10A, 110B, 110C plurality of media gateway 111.

Broadcasting service services quality monitoring unit 103 is used to collect, handle by network node and be wireless router and gateway 122, digital broadcasting transmitter 123, move or the network service quality information of coming are gathered in fixed terminal 124 and wireless access base station 202, mobile communication base station 203 etc., quality of service information mainly comprises the information of the coverage condition of weighing broadcast singal, as the position of signal interference ratio and signal interference ratio correspondence and time etc.The covering quality of the digital broadcast signal in 103 pairs of digital broadcast transmitting station 201 coverages in broadcasting service services quality monitoring unit carries out round-the-clock monitoring, and testing result as one of foundation of network operation and network resource scheduling.Such as, when appearring on a large scale in certain zone for a long time, the broadcast singal quality is lower than normal door in limited time, will carry out the correction of the network coverage, and perhaps use the wireless access base station 202 of bottom, mobile communication base station 203 that the business that this covers bad emission digital broadcast transmitting station, zone 201 is remedied (supposing that there is good covering the wireless access base station 202 of bottom this moment or mobile communication base station 203 to this zone and rich capacity is arranged).

Broadcasting service spectrum requirement computing unit 104 flow of the broadcasting service of digital broadcast transmitting station 201 emissions as required calculates the bandwidth that digital broadcast transmitting station 201 needs, and this bandwidth is being distributed a frequency spectrum foundation of (distributing time slot width exactly between digit broadcasting system and mobile communication system for the present invention) as business and spectral coordination unit 105 between digit broadcasting system and the mobile communication system.

Business and spectral coordination that business and spectral coordination unit 105 are realized between digit broadcasting system and the mobile communication system, as, according to digit broadcasting system needs loaded service amount, the service quality of the digital broadcast networks that broadcasting service services quality monitoring unit 103 provides, determining need be by the net loaded broadcasting service at specific region or particular group of mobile communication, need be by the net loaded demand (telecommunication) service of mobile communication, and under the corresponding business distribution condition, according to the result of calculation of business proportion between digit broadcasting system and the mobile communication system and broadcasting service spectrum requirement computing unit 104, determine two spectrum allocation may ratio and quantity (promptly distributing time slot width) between the system.A basic role professional and spectral coordination unit 105 is: in the period that broadcasting service descends, more frequency spectrum (number of timeslots) is distributed to communication service, in the period that broadcasting service rises, more frequency spectrum (number of timeslots) is distributed to broadcasting service, and business and spectral coordination unit 105 are the core function unit that realize professional and spectrum allocation may between the different sub-network network;

Business and spectral coordination result that Access Network Comprehensive Control unit 106 provides according to professional and spectral coordination unit 105, the progress of work between the different working modes between the different aspects of the wireless access subnet 102 that Fig. 6 provides, in the same aspect is coordinated and wireless resource scheduling, send the instruction of specifying its time slot width, send and specify its instruction of carrying out cell breathing, send the instruction of specifying its uplink and downlink timeslot method of salary distribution etc. to broadband wireless supporting layer 113, the mobile communication layer 114 of wireless access subnet 102 as, Access Network Comprehensive Control unit 106.

Network Synchronization quality-monitoring and coordination unit 107 receives and handles in the wireless digital broadcasting layer of being sent here by wireless access subnet 102 112 difference RTD (Relative Time Difference) the data correlation time between the adjacent digital broadcast transmitting station 201, RTD in the mobile communication layer 114 between adjacent base station (Relative Time Difference) data, RTD in the broadband wireless supporting layer 113 between adjacent base station (Relative Time Difference) data, and, the synchronous regime of network is adjusted by the uplink synchronous quality information that some node in the wireless access subnet 102 (terminal or base station) is sent here.To method of adjustment synchronous between the digital broadcast transmitting station be: with the satellite fix on the digital broadcast transmitting station, as gps time is reference, size according to the RTD value between two adjacent digital broadcast transmitting stations that measure, according to predetermined step-length, be in the time delay at the digital broadcast transmitting station of emission state in advance by increase, or, progressively adjust to RTD less than in the scope that requires by reducing to be in the time delay at digital broadcast transmitting station of emission of lagging behind.Same method is taked in adjustment to the RTD between adjacent base station in the adjustment of the RTD between adjacent base station in the mobile communication layer 114, the broadband wireless supporting layer 113.For the ropy zone of uplink synchronous occurring; can take several different methods to solve the uplink synchronous problem; as; the protection time slot of adjusting between up-downgoing by Access Network Comprehensive Control unit 106 solves; if it is poor by the uplink synchronous that causes at a high speed; just the terminal of high-speed mobile is switched to broadband wireless supporting layer 113, utilize this layer to improve uplink synchronous for supporting the specially designed time slot of high-speed mobile.

Radio bearers comprehensive detection unit 108 obtains the radio bearers information that each base station is sent here in each base station in the broadband wireless supporting layer 113, the mobile communication layer 114, and these information offer Access Network Comprehensive Control unit 106 and use.Access Network Comprehensive Control unit 106 is according to the loading condition on the different base station of radio bearers comprehensive detection unit 108 collections, carry out control corresponding, as, when and access point load it around overweight when the load of certain base station in the adjacent base station in the mobile communication layer 114 is light, load comprehensive detection unit 108 just sends the cell breathing order in the lighter base station of load to the heavy base station of load on every side with it, reduce the coverage of the heavy base station of load, enlarge the coverage of the light base station of load.

For edge-description, above-mentioned broadcasting service services quality monitoring unit 103, broadcasting service spectrum requirement computing unit 104, business and spectral coordination unit 105, Access Network Comprehensive Control unit 106, Network Synchronization quality-monitoring and coordination unit 107, radio bearers comprehensive detection unit 108 are according to concentrating the mode that realizes to provide in management control subnet, also can realize being distributed to whole or in part in each node in the wireless access subnet, base station, the terminal of these functions.

Described database 109A, 109B are used to provide business datum, network management data of user data, user's needs etc.; Described router one 10A, 110B, 110C are used to realize based on the IP agreement, and particularly IPV6/MIPV6's has a routing function that QOS ensures; Described media gateway 111 is used to realize the conversion of the transformat of multimedia data stream, as to MEPG series code stream, H.26X code stream IP packing encapsulation and seal off dress.

The method of the time division multiplexing frequency spectrum that the present invention provides specifically describes as follows:

The first step: number that need to determine the subsystem of the same frequency band of time division multiplexing

When calculating the subsystem number of multiplexing same frequency band, be in a plurality of subsystems of one deck and be used as a subsystem processes, as, can only comprise several mobile communication base stations 203 in the mobile communication layer 114, also can comprise several mobile communication base stations 203 and several wide area network access points 207, when mobile communication layer 114 comprises several mobile communication base stations 203 with several wide area network access points 207, because several mobile communication base stations 203 are in same one deck with several wide area network access points 207, when spectrum allocation may, mobile communication base station 203 and wide area network access point 207 are used as a system treat.

In system shown in Figure 6, wireless access subnet 102 is made up of wireless digital broadcasting layer 112, broadband wireless supporting layer 113, mobile communication layer 114, and this is the problem of a time-division frequency spectrum between three subsystems.

Second step: estimate the initial bandwidth that each subsystem needs

1) estimates the traffic carrying capacity of each subsystem, combined factors such as traffic carrying capacity, ambient interferences, transmission mode are considered that laggard line frequency spectrum calculates.If the bandwidth that limits satisfies the needed bandwidth of traffic carrying capacity sum, just enter time slot width and distribute, otherwise reduce traffic carrying capacity or increase bandwidth;

2) calculate the time width that each subsystem need take under the qualification bandwidth;

The 3rd step: determine structure of time slot form and parameter

Number, traffic carrying capacity size and professional QOS according to the subsystem of multiplexing same frequency band require time delay, determine the form and the parameter of structure of time slot.

Fig. 8 is the basic structure of time slot form that frequency spectrum is shared in the timesharing of a kind of three systems, and the digital broadcasting time slot 301 among the figure, BACKHAUL time slot 302 and radio communication time slot 303 be common to constitute a compound time slot, in wireless access subnet 102 appearance that periodically circulates.Circulation sends digital broadcasting time slot 301, BACKHAUL time slot 302 and radio communication time slot 303 successively in the combined cycle of a compound time slot, described digital broadcasting time slot 301 is subdivided into the sub-slots with the digital broadcast channel correspondence successively, and described radio communication time slot 303 is subdivided into the sub-slots with the radio communication channel correspondence successively.

The method of the realization frequency spectrum dynamic assignment that the present invention provides is that it comprises the steps:

The first step: professional monitoring

Need the frequency spectrum of frequency spectrum and service needed such as mobile communication, wireless support to carry out comprehensive monitoring to digital broadcasting service.

In the system as shown in Figure 6 that the present invention provides, broadcasting service spectrum requirement computing unit 104 calculates the bandwidth that digital broadcast transmitting station 201 emission broadcasting services need in real time, and compares with pre-assigned bandwidth; Radio bearers comprehensive monitoring unit 108 is collected the radio bearers of wireless access base station 202 and the radio bearers of mobile communication layer 114 in real time, and compares with pre-assigned bandwidth.The load of finding its monitoring when broadcasting service spectrum requirement computing unit 104 or radio bearers comprehensive monitoring unit 108 in comparison is carried out spectral coordination and adjustment with regard to requested service and spectral coordination unit 105 during greater than predetermined threshold;

Second step: slot length adjustment

The principle of time slot adjustment is: shorten the slot length that idle subsystem takies, strengthen the slot length that busy subsystem takies.

Such as, the flow of the broadcasting service that needs digital broadcast transmitting station 201 emission that calculates when broadcasting service spectrum requirement computing unit 104 reduces, the radio bearers data of radio bearers comprehensive monitoring unit 108 collections show when the communication of mobile terminal flow strengthens simultaneously, just the time slot width that broadcast transmission station 201 takies is reduced, radio communication time slot 303 is strengthened by professional and spectral coordination unit 105; If the flow of the broadcasting service of digital broadcast transmitting station 201 emissions reduces, the communication of mobile terminal flow is constant, and just the load of wireless access base station 202 strengthens, and just reduces digital broadcasting time slot 301, strengthens BACKHAUL time slot 302.

The present invention gives a kind of layer inter-sync measurement and method of adjustment based on this access network architecture, and it may further comprise the steps the method for synchronously measuring between the digital broadcast transmitting station:

The first step: during digital broadcast transmitting station working time slot 407, use wireless access base station 202 and 203 pairs of digital broadcast transmitting stations, mobile communication base station to carry out OTDOA and measure, obtain one group of OTDOA measuring amount.Can use the station symbol signal at digital broadcast transmitting station during measurement, also can use the signal of other form of digital broadcast transmitting station transmission, as the code signal that OTDOA measures design that aims at that inserts in the numeral broadcasting;

Second step: the OTDOA measuring amount of utilizing the first step to measure, and known wireless access base station 202 and mobile communication base station 203 and by the distance between the digital broadcast transmitting station of its measurement, this distance can be measured demarcation in advance, calculates the RTD between the different digital broadcast transmission station;

RTD just to adjusting the launch time at respective digital broadcast transmission station, remains in the error range its RTD during greater than the error range that allows.Concrete method of adjustment is: sluggishness is in the signal sending time at the digital broadcast transmitting station of state relatively in advance, perhaps is in the signal sending time at the digital broadcast transmitting station of state relatively afterwards in advance.

Of the present invention method for synchronously measuring between the mobile communication base station be may further comprise the steps:

The first step: during mobile communication base station working time slot 406, perhaps carry out during the BACKHAUL data transmit to wireless access base station 202 in each mobile communication base station, the OTDOA measurement is carried out in 202 pairs of mobile communication base stations, wireless access base station, obtains the OTDOA measuring amount;

Second step: the OTDOA measuring amount that utilization measures and known mobile communication base station and the distance between the wireless access base station 202, this distance can be measured demarcation in advance, calculates the RTD between the different mobile communication base station;

These RTD are sent to mobile position estimation center and Network Synchronization quality-monitoring and the coordination unit 107 that is arranged in management and control subnet 101, be used for mobile position estimation and Network Synchronization adjustment, method of adjustment: sluggishness is in the signal sending time of the mobile communication base station of state relatively in advance, perhaps is in the signal sending time of the mobile communication base station of state relatively afterwards in advance.

Of the present invention method for synchronously measuring between the wireless access base station be may further comprise the steps:

The first step: during wireless access base station working time slot 408, the OTDOA measurement is carried out to wireless access base station 202 in the mobile communication base station, obtains the OTDOA measuring amount;

Second step: the OTDOA measuring amount that utilization measures and known mobile communication base station and the distance between the wireless access base station 202, this distance can be measured demarcation in advance, calculates the RTD between the different radio access base station;

These RTD are sent to mobile position estimation center and Network Synchronization quality-monitoring and the coordination unit 107 that is arranged in management and control subnet 101, be used for mobile position estimation and Network Synchronization adjustment, method of adjustment: sluggishness is in the wireless access signal of base station transmitting time of state relatively in advance, perhaps is in the wireless access signal of base station transmitting time of state relatively afterwards in advance.

Above-mentioned RTD estimates except the monitoring, the location of mobile station that are used for net synchronization capability, further, also is used for auxiliary moving terminal or digital broadcasting transmitter and carries out fast cell search and many fast through search.

The mobile location method that the present invention provides may further comprise the steps:

The first step: travelling carriage carries out OTDOA (Observed Time Difference of Arrival) and measures, the cyberspace layout that provides according to Fig. 7, the spatial distribution of the location survey time slot of describing according to Fig. 9 (b), travelling carriage positions the OTDOA that needs and measures.

This measurement can be initiated by network side, can be continuous measurement by Mobile Origination also, also can be that burst is measured;

When sub-district A need carry out OTDOA that one-time positioning uses when measuring, just make the localization time slot 405A in the superframe that sub-district A sends enter positioning states, other localization time slots in other superframes keep communications status; When sub-district C need carry out OTDOA that one-time positioning uses when measuring, just make the localization time slot 405C in the superframe that sub-district C sends enter positioning states, other localization time slots in other superframes keep communications status.

Repeatedly locate in a superframe group if desired, just select a plurality of superframes in the superframe group, the localization time slot that starts in these superframes makes it be in positioning states.As, corresponding 1 a second time of superframe group, in 1 second, comprise 10 superframes, when needs carry out in the per second 5 location, promptly need per second to measure the OTDOA amount 5 times, just from these 10 superframes, select 5 superframes, start wherein correct positioning time slot respectively, just can realize carrying out in 1 second 5 OTDOA and measure.

Second step: carry out location of mobile station and estimate

That at first utilizes the dominant base measurement calculates TDOA to the RTD between the secondary base station and the OTDOA of moving table measuring, utilizes the hyperbolic location to obtain the location estimation amount of travelling carriage then.

Further, use TDOA hyperbolic the location result who obtains and the position result and the satellite fix that use DOA (DOA of DOA+RTT or a plurality of base stations) to obtain, the positioning result that obtains as GPS or AGPS merges, and can obtain better location of mobile station and estimate.

It below is the technical conceive of describing layering wireless accessing network structure of the present invention and implementation method at each embodiment in detail.

Embodiment 1:

Be the space layout of three layers of wireless access subnet of same frequency of providing of a present invention as shown in Figure 7.Digital broadcast transmitter 201 among the figure can have a plurality of digital broadcast transmitters to work in the mode of single frequency network as the wireless digital broadcasting layer 112 of Fig. 6 in the practical application.Digital broadcast transmitter covers the broadband wireless supporting layer of being made up of several wireless access base stations 202 113, the mobile communication layer 114 that several mobile communication base stations 203 are formed.

In network is realized digital broadcast transmitter, wireless access base station, mobile communication base station by the GPS navigation system timing and the layer preliminary with, and by RTD measure and RTD adjust realize the antenna actinal surface place between each transmitter, the base station in the layer synchronously.

Broadband wireless supporting layer 113, mobile communication layer 114 are under the control of the synchronizing information 115 of digital broadcast transmitter emission, according to time-slot sequence that provides in the synchronizing information and length co-ordination.

Digital broadcast transmitter 201 adopts many antenna multichannel mode, with wireless router and gateway 122, digital broadcasting transmitter 123, move or fixed terminal 124 constitutes mimo channel or MISO channels, handles significantly improving channel spectrum efficient during by sky.Digital broadcast transmitter 201 sends the IP multimedia code stream in the zone of its covering, as the MPEG-2 code stream through the IP packing; Broadband wireless supporting layer 113 is made up of the system that is similar to WiMAX, realizes mobile communication base station backhaul (BACKHAUL) high-speed data chain, and realizes the RTD of mobile communication base station is measured; The mobile communication base station is used to support the communication service and the part broadcasting service of mobile communication terminal.

Wireless router and gateway 122, digital broadcasting transmitter 123, mobile or the business demand of fixed terminal 124 bases oneself and the function of support are set up corresponding the contact with receiving from broadband wireless supporting layer 113, mobile communication layer 114, wireless digital broadcasting layer 112 respectively.As, wireless router and gateway 122 as moving or the relaying of fixed terminal 124, moving or the base station of fixed terminal 124 and far-end establishes a communications link with the transmitting power that improves channel capacity and save mobile or fixed terminal 124; MPEG-2 code stream and network that digital broadcasting transmitter 123 receiving digital broadcast transmitters 201 send by existing around it, as WLAN (wireless local area network) 126, the quality of broadcast channel, information such as broadcast world purpose feedback are sent to management and the corresponding units of control in the subnet 101, as 103.

Wireless router and gateway 122, digital broadcasting transmitter 123, mobile or fixed terminal 124 carries out OTDOA periodically and measures, as per second 1 time, and measurement result is reported to the mobile position estimation center of network side, go out the position of travelling carriage by the mobile position estimation center calculation, perhaps travelling carriage is according to OTDOA and RTD data Web broadcast and OTDOA correspondence its measurement oneself measured, travelling carriage is estimated the position of oneself in real time, and utilize this location estimation result, perhaps with the DOA positioning result, the satellite fix result combines to determine the launch time of oneself, thereby guarantees that the signal that the travelling carriage on the diverse location sends can arrive the base station synchronously.

Wireless router and gateway 122 adopt satellite fix, as GPS location and timing function, for the terminal on the high speed moving platform, all set up the double jump link, so just significantly alleviated the inferior position that TDD communicates by letter under telecommunication and high-speed mobile environment with respect to FDD by wireless router and gateway 122 and base station.

Wireless digital broadcasting layer 112, broadband wireless supporting layer 113, mobile communication layer 114 work in the same frequency band according to time division way, in principle, the hierarchy that Fig. 6, Fig. 7 provide is applicable to any frequency range, but, in order to reach good signal communication effect, this is positioned at certain frequency separation below the 3GHz by the time-multiplexed same section frequency band of each layer, selection mode is certain frequency separation between 400MHz～1GHz preferably, if consider the compromise of antenna size and propagation performance, better choice is to be operated between 650MHz～800MHz.

Embodiment 2:

The present invention is equally applicable to the networking together with multiple frequency network, MFN MFN (Multi-Frequency Network), by frequency multiplexing mode shown in Figure 3, realizes the laying of network of the present invention.

Under frequency multiplexing mode shown in Figure 3, as long as the network application that Fig. 7 is provided can realize the laying with the frequency division layer network of the present invention in the zone with same letter CCCCCCC, in this case, the digital broadcasting on upper strata is still as broadcast system independently, the system that network of the present invention merges mutually as digital broadcasting and mobile communication, these two systems can complementary work.

A kind of layering wireless accessing network structure and method of work that the present invention is given, the upper strata of this wireless access network is the wireless digital broadcasting layer, and the intermediate layer is wireless supporting layer, and bottom is the mobile communication layer.Give simultaneously and be applicable to this integrated services method, frequency spectrum sharing method, frequency spectrum dynamic allocation method, network synchronization method, mobile location method with the frequency three-decker.The given layering wireless access network of the present invention has characteristics simple for structure, networking flexibility, and is easy to realize the fusion of digital broadcasting, mobile communication and mobile position estimation business, is easy to realize frequency spectrum share, frequency spectrum dynamic assignment, is easy to realize Network Synchronization.

To sum up, be described layering wireless accessing network structure of the present invention and implementation method, this network configuration is easy to realize the fusion of following DTB Digital Terrestrial Broadcasting and mobile communication system, and can significantly improve the uplink synchronous quality of tdd mode lower network, reduce the transmitting power of terminal simultaneously, be easy to lay, be easy to dilatation.

Simultaneously, above-mentioned description at specific embodiment of the present invention is comparatively concrete, can not therefore be interpreted as the restriction to scope of patent protection of the present invention, and its scope of patent protection should be as the criterion with claims.

Claims (41)

1, a kind of layering wireless accessing network structure is characterized in that, it comprises the wireless access subnet of realizing wireless access, realizes the management control subnet two large divisions to integrated management of wireless access subnet and control.

2, layering wireless accessing network structure according to claim 1, it is characterized in that, described wireless access subnet by the broadband wireless supporting layer of the wireless digital broadcasting layer that is in the upper strata, the layer that mediates, be in the mobile communication layer of bottom, and be present in these aspect coverages, can form with the various terminals of one or more aspect cooperatings in these aspects;

Described management control subnet comprises at least: a broadcasting service services quality monitoring unit, a broadcasting service spectrum requirement computing unit, a business and spectral coordination unit, an Access Network Comprehensive Control unit, a Network Synchronization quality-monitoring and coordination unit, a radio bearers comprehensive detection unit, several databases, several routers, plurality of media gateway.

3, layering wireless accessing network structure according to claim 2 is characterized in that, described wireless digital broadcasting layer comprises at least one digital broadcast transmitting station; Described broadband wireless supporting layer comprises at least one wireless access base station; Described mobile communication layer comprises the mobile communication base station that several become continuous covering state, perhaps comprises mobile communication base station and several wireless wide area network base stations that several become honeycomb to distribute; Described terminal comprises wireless router and gateway, digital broadcasting transmitter, moves or fixed terminal.

4, layering wireless accessing network structure according to claim 3, it is characterized in that, described terminal adopts single antenna single-channel receiver and transmitter architecture, and described digital broadcast transmitting station employing multichannel multiple antenna transmitter, constitutes many single-input single-output system (SISO system)s.

5, layering wireless accessing network structure according to claim 3, it is characterized in that, described terminal adopts many antenna multichannel Receiver And Transmitter structure, and the multichannel multiple antenna transmitter is adopted, the formation multi-input multi-output system in described digital broadcast transmitting station.

6, layering wireless accessing network structure according to claim 3 is characterized in that, the single channel single antenna transmitter is adopted at described digital broadcast transmitting station.

7, layering wireless accessing network structure according to claim 3 is characterized in that, described wireless access base station is made up of transmitter and receiver two parts, and transmitter and receiver is respectively applied for realizes communication system down link link and up link; The transmitter and receiver of described wireless access base station all adopts many antenna multichannel structure, matches with the described terminal of described many antenna multichannel of employing transmitter and receiver structure, constitutes multi-input multi-output system; Match with the described terminal of described employing single antenna single channel transmitter and receiver structure, constitute many single-input single-output system (SISO system)s.

8, layering wireless accessing network structure according to claim 3 is characterized in that, described mobile communication base station is made up of transmitter and receiver two parts, and transmitter and receiver is respectively applied for realizes communication system down link link and up link; Described transmitter and receiver all adopts many antenna multichannel structure, matches with the described terminal of described many antenna multichannel of employing transmitter and receiver structure, constitutes multi-input multi-output system; Match with the described terminal of described employing single antenna single channel transmitter and receiver structure, constitute many single-input single-output system (SISO system)s.

According to claim 4 or 5 or 7 or 8 described layering wireless accessing network structures, it is characterized in that 9, treatment technology, hierarchical coding technology improved the spectrum efficiency of digit broadcasting system when described multi-input multi-output system and many single-input single-output system (SISO system)s adopted sky.

10, layering wireless accessing network structure according to claim 9 is characterized in that, described when empty treatment technology comprise the Space Time Coding technology of Alamouti algorithm and the space multiplexing technique of V-BLAST algorithm.

11, layering wireless accessing network structure according to claim 2 is characterized in that, described broadcasting service services quality monitoring unit is used to collect, handle the network service quality information of being come by the network node collection;

The described broadcasting service spectrum requirement computing unit flow of the broadcasting service of digital broadcast transmitting station emission as required calculates the bandwidth that the digital broadcast transmitting station needs, and this bandwidth is as a foundation of distributing frequency spectrum between digit broadcasting system and mobile communication system;

Business and the spectral coordination between digit broadcasting system and the mobile communication system realized in described business and spectral coordination unit;

Business and spectral coordination result that described Access Network Comprehensive Control unit provides according to professional and spectral coordination unit, the progress of work between the different working modes between the different aspects of described wireless access subnet, in same aspect is coordinated and wireless resource scheduling;

Described Network Synchronization quality-monitoring and coordination unit are used for receiving and handle in difference data correlation time between the adjacent digital broadcast transmitting of the wireless digital broadcasting layer station of being sent here by the wireless access subnet, the mobile communication layer in difference data correlation time between adjacent base station, the broadband wireless supporting layer difference data and the uplink synchronous quality information sent here by some node in wireless access subnet correlation time between adjacent base station, and the synchronous regime of network is adjusted;

Described radio bearers comprehensive detection unit is used for obtaining the radio bearers information that each base station is sent here in each base station of broadband wireless supporting layer, the mobile communication layer, and these information are used for that Access Network is carried out Comprehensive Control and use.

12, layering wireless accessing network structure according to claim 11, it is characterized in that, described business and spectral coordination unit are according to digit broadcasting system needs loaded service amount, the service quality of the digital broadcast networks that broadcasting service services quality monitoring unit provides, determining need be by the net loaded broadcasting service at specific region or particular group of mobile communication, need be by the net loaded demand (telecommunication) service of mobile communication, and under the corresponding business distribution condition, according to the result of calculation of business proportion between digit broadcasting system and the mobile communication system and broadcasting service spectrum requirement computing unit, determine two spectrum allocation may ratio and quantity between the system.

13, layering wireless accessing network structure according to claim 12 is characterized in that, described business and spectral coordination unit are given communication service more spectrum allocation may in the period that broadcasting service descends; In the period that broadcasting service rises, give broadcasting service more spectrum allocation may.

14, layering wireless accessing network structure according to claim 11 is characterized in that, described quality of service information comprises the information of the coverage condition of weighing broadcast singal, comprises the position and the temporal information of signal interference ratio and signal interference ratio correspondence.

15, layering wireless accessing network structure according to claim 11, it is characterized in that the described progress of work is coordinated and wireless resource scheduling comprises: send the instruction of specifying its time slot width, send the instruction of specifying its instruction of carrying out cell breathing, sending its uplink and downlink timeslot method of salary distribution of appointment to broadband wireless supporting layer, the mobile communication layer of wireless access subnet.

16, layering wireless accessing network structure according to claim 11 is characterized in that, described synchronous regime adjustment to network comprises: 1) to adjustment synchronous between the digital broadcast transmitting station; 2) to the poor adjustment correlation time between adjacent base station in the broadband wireless supporting layer; 3) to the poor adjustment correlation time between adjacent base station in the mobile communication layer.

17, layering wireless accessing network structure according to claim 16, it is characterized in that, the described method that the synchronous regime of network is adjusted also comprises: with the global position system gps time on the digital broadcast transmitting station is reference, according between two adjacent digital broadcast transmitting stations that measure correlation time difference size, according to predetermined step-length, be in the time delay at the digital broadcast transmitting station of emission state in advance by increase, or, progressively adjust to the correlation time difference less than in the scope that requires by reducing to be in the time delay at digital broadcast transmitting station of emission of lagging behind.

According to the described layering wireless accessing network structure of claim 11～17, it is characterized in that 18, described each functional unit can be present among the network with independent entity, also can decompose in each network entity and realize.

19, a kind of implementation method of layering wireless access network, it may further comprise the steps:

A) the wireless digital broadcasting course that is in the upper strata mediate layer the broadband wireless supporting layer, be in the mobile communication layer of bottom, and be present in these aspect coverages, can with the various terminal broadcast synchronization and the control information of one or more aspect cooperatings in these aspects;

B) described Network Synchronization measurement and method of adjustment comprise the steps: b1) observation arrival time difference measurements; B2) correlation time, difference was calculated; B3) correlation time, difference was adjusted;

C) method that realizes observation arrival time difference measurements in the described mobile communication layer realizes by localization time slot, comprises that localization time slot structure, localization time slot insert, the localization time slot spatial reuse;

D) realize frequency spectrum dynamic assignment and multiplexing according to described time slot location;

E) mobile location method is adopted following steps: e1) travelling carriage is observed the arrival time difference measurements; E2) carrying out location of mobile station estimates.

20, the described implementation method of claim 19 is characterized in that, described synchronously and control information comprise: the 1) code at digital broadcast transmitting station is used for difference measurements correlation time between discriminating digit broadcast transmission station and different digital broadcast transmission station; 2) give the length of different layers assignment time slot and putting in order of these time slots, be used to control the job order and the working time slot of wireless digital broadcasting layer, broadband wireless supporting layer, mobile communication layer.

21, implementation method according to claim 20, it is characterized in that, the broadband wireless supporting layer of the described wireless digital broadcasting layer that is in the upper strata, the layer that mediates, the mobile communication layer that is in bottom use satellite positioning signal or ground network to transmit signal and realize a layer inter-sync, and by correlation time difference measurements and coordinating realize antenna actinal surface place synchronous between layer interior different transmitters.

22, implementation method according to claim 21, it is characterized in that, synchronous in order to realize the uplink downlink between wireless access base station and mobile communication base station or mobile communication base station and the mobile communication base station, transmission identification information and the control information in the own working time slot of interlayer synchronizing information broadcasting of described wireless access base station or mobile communication base station.

23, implementation method according to claim 22 is characterized in that, described identification information and control information comprise: the identifying information that sends sign oneself; Send the positional information of uplink and downlink timeslot; The sending time slots length information.

24, implementation method according to claim 21, it is characterized in that, in the described wireless sub network, for realize between mobile communication base station and the described terminal the uplink and downlink communication link synchronously, the mobile communication base station is in oneself working time slot of interlayer synchronizing information broadcasting, in the coverage of oneself, send identification information and control information, comprise identifying information that sends sign oneself and the positional information that sends uplink and downlink timeslot.

25, implementation method according to claim 19, it is characterized in that, described localization time slot building method comprises: the beginning part of a localization time slot is used for emission expression transmitting base station code signal, the remainder of localization time slot is used to launch communication data.

26, implementation method according to claim 19 is characterized in that, described localization time slot building method is: localization time slot and other business time-slot are stitched together constitutes a compound frame; Several compound frame constitute a superframe.

27, implementation method according to claim 26 is characterized in that, constitutes a superframe by 7 compound frame.

28, implementation method according to claim 19, it is characterized in that, described localization time slot method for spacial multiplex is: the unlatching of 7 localization time slots that comprise in the superframe is regarded as seven constantly by the frequency of spatial reuse, according to the unlatching moment of Cellular Networks to multiplexing these 7 localization time slots of the mode of channeling.

29, implementation method according to claim 28, it is characterized in that, the unlatching of localization time slot is meant and neither sends the base station code signal in localization time slot in the described localization time slot method for spacial multiplex, do not send service signal yet, and the terminal that is used in this base station range is measured the code signal of adjacent base station, arrives the time difference to obtain observation.

30, implementation method according to claim 29, it is characterized in that the unlatching of localization time slot is that some localization time slots of comprising can only have one at any time and are in opening in the described time slot method for spacial multiplex in the superframe of the sub-district of its service of covering of same set of emission system emission.

31, implementation method according to claim 19, it is characterized in that, the step of described spectrum reuse comprises: number that need 1) to determine the subsystem of the same frequency band of time division multiplexing, each layer in the system is used as a subsystem processes, promptly is in a plurality of subsystems of one deck and is used as a subsystem processes; 2) estimate the initial bandwidth that each subsystem needs, the combined factors of traffic carrying capacity, ambient interferences, transmission mode is considered the calculating of laggard line frequency spectrum; 3) determine structure of time slot form and parameter,, determine the form and the parameter of structure of time slot according to number, traffic carrying capacity size and the professional QOS requirement of the subsystem of multiplexing same frequency band.

32, implementation method according to claim 19, it is characterized in that, the step of described realization frequency spectrum dynamic assignment is: 1) professional monitoring, described broadcasting service spectrum requirement computing unit calculates the bandwidth that digital broadcast transmitting station emission broadcasting service needs in real time, and compares with pre-assigned bandwidth; Described radio bearers comprehensive monitoring unit is collected the radio bearers of wireless access base station and the radio bearers of mobile communication layer in real time, and compares with pre-assigned bandwidth; The load of finding its monitoring when described broadcasting service spectrum requirement computing unit or radio bearers comprehensive monitoring unit in comparison asks described business and spectral coordination unit to carry out spectral coordination and adjustment during greater than predetermined threshold;

2) slot length adjustment: shorten the slot length that idle subsystem takies, strengthen the slot length that busy subsystem takies.

33, implementation method according to claim 19, it is characterized in that, described step b1) be during the working time slot of digital broadcast transmitting station, use wireless access base station and mobile communication base station that the arrival time difference measurements is observed at the digital broadcast transmitting station, obtain one group of observation and arrive the time difference measurements amount;

Described step b2) for utilizing the observation that measures to arrive the time difference measurements amount, and known wireless access base station and mobile communication base station and by the distance between the digital broadcast transmitting station of its measurement, the correlation time that calculates between the different digital broadcast transmission station is poor;

Described step b3) be when described correlation time, difference was greater than the error range that allows, just to adjusting the launch time at respective digital broadcast transmission station, make its correlation time of poor remaining in the error range, concrete method of adjustment is: sluggishness is in the signal sending time at the digital broadcast transmitting station of state relatively in advance, perhaps is in the signal sending time at the digital broadcast transmitting station of state relatively afterwards in advance.

34, implementation method according to claim 19, it is characterized in that, described step b1) be during the working time slot of mobile communication base station, perhaps carry out during the BACKHAUL data transmit to the wireless access base station in each mobile communication base station, the arrival time difference measurements is observed to the mobile communication base station in the wireless access base station, obtains observation and arrives the time difference measurements amount;

Described step b2) for utilizing the observation measure to arrive time difference measurements amount and known mobile communication base station and the distance between the wireless access base station, the correlation time that calculates between the different mobile communication base station is poor;

Described step b3) is sent to mobile position estimation center and Network Synchronization quality-monitoring and the coordination unit that is arranged in management and control subnet for these correlation times are poor, be used for mobile position estimation and Network Synchronization adjustment, concrete method of adjustment: sluggishness is in the signal sending time of the mobile communication base station of state relatively in advance, perhaps is in the signal sending time of the mobile communication base station of state relatively afterwards in advance.

35, implementation method according to claim 19 is characterized in that, described step b1) be that the arrival time difference measurements is observed to the wireless access base station in the mobile communication base station during the working time slot of wireless access base station, obtain observation and arrive the time difference measurements amount;

Described step b2) for utilizing the observation measure to arrive time difference measurements amount and known mobile communication base station and the distance between the wireless access base station, the correlation time that calculates between the different radio access base station is poor;

Described step b3) be with these correlation times of poor mobile position estimation center and Network Synchronization quality-monitoring and the coordination unit that is arranged in management and control subnet that be sent to, be used for mobile position estimation and Network Synchronization adjustment, concrete method of adjustment is: sluggishness is in the wireless access signal of base station transmitting time of state relatively in advance, perhaps is in the wireless access signal of base station transmitting time of state relatively afterwards in advance.

36, implementation method according to claim 33, it is characterized in that, can use the station symbol signal at digital broadcast transmitting station during described measurement, that inserts in the digital broadcasting that also can use the digital broadcast transmitting station to send aims at the code signal that observation arrives the time difference measurements design.

37, implementation method according to claim 19, it is characterized in that, described step e1) can initiate by network side, also can be by Mobile Origination, but continuous measurement, the measurement that also can happen suddenly is when certain sub-district need be carried out observation that one-time positioning uses and arrived time difference measurements, just make the certain position time slot in the superframe that this sub-district sends enter positioning states, the localization time slot maintenance communications status that this sub-district and this localization time slot are synchronous.

38, according to the described implementation method of claim 37, it is characterized in that described step e1) when in a superframe group, repeatedly locating, in this superframe group, select a plurality of superframes, the localization time slot that starts in these superframes makes it be in positioning states.

39, according to claim 37 or 38 described implementation methods, it is characterized in that, described step e2) comprising: at first utilize the observation arrival time difference of and the moving table measuring poor of dominant base measurement to calculate the arrival time difference, utilize the hyperbolic location to obtain the location estimation amount of travelling carriage then to the correlation time between the secondary base station.

According to the described implementation method of claim 39, it is characterized in that 40, the positioning result that the location estimation result that described localization method obtains obtains with the position result of using arrival direction to obtain, with satellite fix further merges mutually.

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