CN104104440A - Visible light communication based indoor Femtocell networking communication system - Google Patents
Visible light communication based indoor Femtocell networking communication system Download PDFInfo
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Abstract
The invention discloses a visible light communication based indoor Femtocell networking communication system. The visible light communication based indoor Femtocell networking communication system comprises a terminal, at least one visible light source, an indoor base station and an indoor gateway; the terminal is used for receiving visible light signals; the visible light source is used for providing the visible light signals for the terminal and receiving data request messages sent from the terminal; the indoor base station is used for receiving the data request messages which are forwarded through the visible light source and sent from the terminal and performing the access authentication on the terminal; the indoor gateway is in communication connection with the indoor base station and a core network and is used for performing the data distribution and transmission between the core network and the indoor base station according to the received data request messages which are forwarded through the visible light source and sent from the terminal and achieving the access control on the terminal. According to the visible light communication based indoor Femtocell networking communication system, an indoor wireless access technology which is high in speed, high in quality and low in cost is implemented.
Description
Technical field
The present invention relates to communication technical field, in particular, relate to a kind of indoor Femtocell netting communication system based on visible light communication.
Background technology
Along with 3GPP (3rd Generation Partnership Project, third generation partner program) and LTE (Long Term Evolution, the maturation infiltration of Long Term Evolution)/communication standards such as LTE Advanced, the network coverage is resolved substantially on a large scale, and how to utilize limited frequency spectrum resource meet the data service increasing at any time and the active demand of mobile radio communication capacity is become to new study hotspot gradually.Especially under indoor environment, people's work and amusement demand cause the high speed business such as Streaming Media, video request program, game on line to be enriched constantly, to wireless access rate, require more and more higher.Therefore, good indoor wireless data, services will be the key that future mobile communications network succeeds.
In the face of increasing sharply and the demand of people to high speed bandwidth communication of number of users, due to LED (Light-Emitting Diode, light-emitting diode) visible light communication is used optical frequencies transmission information to have broad communication bandwidth, and avoided electromagnetic interference conflict again without application wireless frequency spectrum, therefore, LED-based VLC (Visible Light Communication, visible light communication) has caused people's extensive concern and research.
Visible light communication is a kind of in the technical emerging light wireless communication technology growing up of white light LEDs.When completing traditional illumination functions, this LED lamp can also be realized radio communication at a high speed, has the advantages such as low in energy consumption, the life-span is long, size is little, easy driving, environmental protection, be regarded as the 4th generation energy saving and environment friendly illuminating product.Simultaneously, the response sensitivity of white light LEDs is very high, has good modulating characteristic, therefore utilizes LED to carry out Ultrahigh speed data communication, compare with other light wireless communication with traditional radio communication, visible light communication have transmitting power high, without advantages such as electromagnetic interference, energy savings.Therefore, how using visible light communication as a kind of indoor high-speed rate, high-quality and wireless access technology cheaply, become problem demanding prompt solution in radio communication.
Summary of the invention
For the problems referred to above, the invention provides a kind of indoor Femtocell netting communication system based on visible light communication, so that a kind of indoor high-speed rate, high-quality and wireless access technology to be cheaply provided.Technical scheme is as follows:
The invention provides a kind of indoor Femtocell netting communication system based on visible light communication, comprising:
For receiving the terminal of visible light signal;
Be used to described terminal that described visible light signal is provided, and receive at least one visible light source of the data request information of described terminal transmission;
For receiving the data request information of the described terminal transmission forwarding by described visible light source, and described terminal is carried out to the indoor base station of access authentication;
With described indoor base station and core net communication connection, the data request information that the described terminal forwarding for the described visible light source according to receiving sends, between described core net and described indoor base station, carry out Data dissemination and transmission, and complete the indoor gateway to described terminal access control.
Preferably, when comprising a plurality of described visible light source, described a plurality of described visible light sources are stratified and set in the regional extent of described indoor base station covering;
Wherein, described in each, visible light source communicates to connect with described indoor base station respectively, and described in each, visible light source occupies the subregion in the regional extent that described indoor base station covers, for receiving the data request information sending from the described terminal in described subregion.
Preferably, also comprise:
Macro base station with described indoor base station communication connection.
Preferably, wave point between described terminal and described indoor base station only retains the function of user plane, the control plane of the wave point between described terminal and described indoor base station is managed by described macro base station, and user plane and the control plane of by described macro base station, being controlled the wave point between described terminal and described indoor base station are separated.
Preferably, after described macro base station is controlled the user plane of the wave point between described terminal and described indoor base station and control plane and is separated, the control signal sending based on described macro base station, the channel that completes indoor Femtocell networking is set up and the Radio Resource control procedure discharging.
Preferably, described indoor base station comprises:
General link processing module, is used to the data allocations link circuit resource receiving from described indoor gateway, link generation data, and for the data that receive from described terminal are processed, interconnection agreement IP packet between generating network;
Wireless communication module group, the data that send for receiving the described terminal of described visible light source forwarding, and the described IP Packet Generation that the data of the described terminal transmission that described visible light source is forwarded generate is to described indoor gateway, and for sending link data to described visible light source, and then be forwarded to described terminal by described visible light source.
Preferably, described wireless communication module group comprises visible light communication module.
Preferably, described wireless communication module group also comprises wireless local area network communications module.
Preferably, described terminal comprises:
Signal strength detection module, for detection of visible light signal intensity;
Request sending module, when pre-conditioned for meeting in described visible light signal intensity, sends described data request information.
Preferably, when described terminal does not communicate while being connected with any network, describedly pre-conditionedly described visible light signal intensity detected and be greater than predetermined threshold value for described signal strength detection module, and the duration that described visible light signal intensity detected is greater than Preset Time threshold value, described request sending module is used for sending registration message to described visible light source, and then be forwarded to described indoor base station by described visible light source, to realize the registration of described terminal in the network of described indoor base station formation; Described registration message is described data request information;
When described terminal has been set up network service connection, the described pre-conditioned network signal intensity that described terminal connected network detected for described signal strength detection module is less than predetermined threshold value, and described visible light signal intensity detected and be greater than predetermined threshold value, the duration of described visible light signal intensity is greater than Preset Time threshold value, described request sending module handovers messages to described visible light source for sending, and then be forwarded to described indoor base station by described visible light source, so that described terminal is switched to being connected of the network that forms with described indoor base station from the connection of the network that is connected with described terminal, described switching message is described data request information,
When the network having formed with described indoor base station when described terminal establishes a communications link, describedly pre-conditionedly for described signal strength detection module, the visible light signal that meets preset strength in preset time period, cannot be detected, described request sending module is used for sending logout message to described visible light source, and then be forwarded to described indoor base station by described visible light source, so that nullify the network that described terminal forms from described indoor base station, described logout message is described data request information.
Preferably, described indoor base station comprises:
Authentication module, for receiving at described indoor base station after the data request information of the described terminal transmission being forwarded by described visible light source, from described indoor gateway, obtain the identity information of the terminal of storage, whether according to the identity information of terminal and the identify label of described terminal of described storage, authenticating described terminal is validated user; Wherein, the data request information that described terminal sends comprises the identify label of described terminal.
Preferably, described indoor gateway stores has access list, and described access list comprises the terminal identity information that allows the described internal home network of access;
Described authentication module is for the described access list of foundation, and whether the identify label that detects described terminal is registered in described access list, if the identify label of described terminal is registered in described access list, determines that described terminal is validated user; If the identify label of described terminal is not registered in described access list, determine that described terminal is illegal user.
Preferably, described indoor gateway comprises:
Registering modules, for the network that described endpoint registration is formed to described indoor base station;
Nullify module, for the network that described terminal is formed from described indoor base station, nullify;
Refusal module, the data request information sending for refusing described terminal.
Application technique scheme, in the indoor Femtocell netting communication system based on visible light communication provided by the invention, provides visible light signal by visible light source, realizes the setting to internal home network.Terminal is sent to visible light source by data request information, and then by visible light source forwarding data request message to indoor base station, to realize the visible light communication of terminal and indoor base station, and then indoor gateway is according to the data request information of terminal transmission, between core net and indoor base station, carry out transfer of data, finally by indoor base station, send the data to terminal again, realized a kind of indoor high-speed rate, high-quality and wireless access technology cheaply.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of structural representation of a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention;
Fig. 2 is the another kind of structural representation of a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention;
Fig. 3 is another structural representation of a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention;
Fig. 4 is another structural representation of a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention;
Fig. 5 is another structural representation of a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention;
Fig. 6 is the flow chart that a kind of indoor Femtocell netting communication system link based on visible light communication provided by the invention is set up;
Fig. 7 is the structural representation of indoor base station in a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention;
Fig. 8 is the structural representation of terminal in a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention;
Fig. 9 is the another kind of structural representation of indoor base station in a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention;
Figure 10 is the structural representation of indoor gateway in a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
First inventor need to explain, and the Femtocell in the present invention refers to Microcell.
Embodiment mono-
Refer to Fig. 1, a kind of structural representation that it shows a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention, comprising: terminal 100, at least one visible light source 200, indoor base station 300 and indoor gateway 400.Wherein,
Terminal 100 is for receiving visible light signal.
Visible light source 200 is used to terminal 100 that visible light signal is provided, and the data request information sending for receiving terminal 100.
The data request information that indoor base station 300 sends for receiving the terminal 100 that forwards by visible light source 200, to realize communicating by letter of 300 of terminal 100 and indoor base stations, and for realizing the access authentication to terminal 100.
In the present embodiment, the access authentication of terminal 100 is specially to the authentication to terminal 100.
In the present invention, visible light source 200 can be the dual-mode antenna of indoor base station 300 expansions.
Indoor gateway 400 and indoor base station 300 and core net 500 communication connections, for the data request information sending according to terminal 100, carry out Data dissemination and transmission in core net 500 and 300 of indoor base stations, and the access control of complete paired terminal 100.
In the present embodiment, to the access control of terminal 100, can comprise registration, cancellation of realizing terminal 100 etc.
In order better to realize the understanding of the present invention, inventor be take the present invention and is applied to subscriber household indoor scene and is elaborated as example.Please refer to Fig. 2 and Fig. 3, it shows respectively another structural representation of a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention.
In the present invention, can comprise a plurality of visible light sources 200, wherein, a plurality of visible light sources 200 are stratified and set in the regional extent of indoor base station 100 coverings.Particularly, each visible light source 200 communicates to connect with indoor base station 100 respectively, and each visible light source 200 occupies the subregion in the regional extent that indoor base station 100 covers, for receiving the data request information sending from the terminal 100 in subregion.
Vivider saying can be understood as, and indoor base station 100 is arranged in family's indoor environment of user, and it has covered all indoor environments of user, such as two bedrooms that comprise.In the large regional extent covering at this indoor base station 100, each bedroom arranges separately again respectively a visible light source 200, forms visible ray Femtocell community.Its each visible ray Femtocell community is for carrying the Packet data service of indoor user.In the present embodiment, each visible light source 200 all can form a visible ray Femtocell community.
Particularly in the present invention, user comprises a plurality of rooms, and indoor base station 100 provides the wireless local environment in a large region for the plurality of room.Wherein, each room is also respectively arranged with at least one visible light source 200 and forms visible ray wireless local environment.In the visible ray wireless local environment forming in room, also can continue to be divided into a plurality of visible rays Microcell by LED desk lamp etc., to support interim or local Packet Service demand, realize flexible in visible ray wireless local environmental field, effective layered coverage.Particularly, by adjusting the position of visible light source 200, as direction, angle, highly, can realize the area coverage to visible light signal, the control of the visible ray WLAN range size forming in room, by adjusting the brightness of visible light source 200, can realize the control to visible light signal intensity size.It should be noted that, because visible light signal is to follow the light wave transmissions of visible light source 200 to transmit, so conveniently there is visible light signal in the ground that visible light source 200 can be irradiated to.By control, opening or close visible light source 200 realizes the unlatching of visible ray WLAN or closing control.
Therefore, the present invention is supported under visible ray Femtocell cell environment, can lay as required interior visible ray Microcell, interim to support, or local Packet Service demand, realizes flexible within the scope of Femtocell, effective layered coverage.
Particularly, inventor be take Fig. 4 and is proceeded to describe in detail as example.In the present embodiment, each room shown in Fig. 4 is referred to as to visible ray Microcell (being visible ray Femtocell).
In the visible ray radio local network environment of the indoor formation of this subscriber household, on ceiling, be provided with for light signal being converted to the photodetector of the signal of telecommunication and the signal of telecommunication sending for receiving photodetector, and the signal of telecommunication is carried out to simple process, be modulated to the visible light communication hub that becomes light signal on visible light source.In actual application, in visible ray WLAN (wireless local area network), visible light communication hub is the core in visible light communication.It receives the information from terminal use, at times the information exchange receiving is crossed to visible light source simultaneously and is sent in the mode of broadcasting.
In prior art, visible light communication adapter VLC Adapter is for terminal use's information is modulated into light signal, and reception visible light signal.In the present embodiment, terminal 100 is specially and has the terminal that can receive, send visible light signal function.Therefore, the terminal in the present invention 100 can be for being provided with the electronic equipment of visible light communication adapter.
In the present embodiment, when terminal in the A of visible ray Microcell 101 wishs send data messages to terminal 102 in the B of visible ray Microcell, visible light communication adapter in terminal 101 is modulated into light signal by data message and is sent to photodetector, and then by photodetector, light signal is converted to the signal of telecommunication and is sent to visible light communication hub, visible light communication hub carries out simple process by the signal of telecommunication again, be modulated to and on visible light source 200, become light signal and be sent to the terminal 102 in the B of visible ray Microcell, visible light communication adapter in terminal 102 receives light signal, and by the demodulates information that belongs to terminal 102 out, input terminal 102 reads, thereby realize the D2D (Device-to-Device of the terminal room in visible ray WLAN (wireless local area network), terminal is straight-through) communication.Be that the terminal of support of the present invention in same indoor visible ray WLAN (wireless local area network) carried out the direct communication of terminal room.
In the present invention, visible light source 200 can be white LED lamp.
What above-described embodiment illustrated is the D2D data transmission procedure of terminal room in visible ray WLAN (wireless local area network), refers to Fig. 5, and it shows another structural representation of a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention.The terminal of the present embodiment based on across Femtocell community carried out the application scenarios of transfer of data.
In actual application, each subscriber household forms a visible ray WLAN (wireless local area network), is below referred to as Femtocell community.The present invention simultaneously also comprises the macrocell covering on the interior all Femtocell of certain area community.Wherein, macrocell comprises macro base station 600.Wave point in terminal 100 and Femtocell community between indoor base station 300 only retains the function of user plane, and its control plane transfers to macro base station 600 to realize and manage.Being the present invention is separated by user plane and the control plane of the wave point of 300 of macro base station 600 control terminals 100 and indoor base stations.
When the control plane by the wave point by 300 of macro base station 600 control terminals 100 and indoor base stations and user plane are separated and can significantly promote wireless network capacitance, can also guarantee the effective mobile management of macro base station 600 and the network coverage, make Femtocell community depart from traditional base station architectural framework completely, realize the effective integration of heterogeneous network.In addition, the control plane of the wave point that terminal 100 and indoor base station are 300 and user plane are separated and make Femtocell community have high degree of flexibility and independence, and make macro base station 600, indoor base station 300 and terminal 100 division of labor clear and definite, simplified heterogeneous network framework, be easy to realize.
In the present embodiment, the general master-slave mode communication mode of Femtocell community and macrocell support.Macro base station 600 work remain on existing channel, and indoor base station 300 is assigned with higher frequency range.The control plane that such configuration makes indoor base station 300 is still under the control in more reliable macrocellular layer, and power system capacity also can get a promotion because of the enormous bandwidth that the user plane after separation obtains visible light communication.Not needing aspect Quarter Design and deployment to consider the interference between macro base station 600 and Femtocell community, do not re-start plot planning, allocation and optimization yet.
In the present invention, the Femtocell community of the indoor formation of visible ray is different from conventional cellular cell, there is no the specific control information in community and control channel, and it completes the signaling control that data interaction depends on macrocellular.Particularly, Femtocell community is separated by control plane and user plane, and the channel that completes Femtocell community under the control of macrocellular is set up and control procedure such as Radio Resource such as releases grade.As shown in Figure 6.Macro base station 600 sends control signal, is responsible for the network coverage in larger scope, network control guarantee basis, reliable and management service; Femtocell community provides data transmission path based on this signaling for customer service, and the high speed wireless data of being absorbed in indoor interval covers.The control signal that the macro base station 600 of take sends is as providing data transmission link to describe as example as customer service, method comprises:
Step 101, terminal 100 sends request for building link message to visible light source 200;
Step 102, visible light source 200 conversion links are set up request message to indoor base station 300;
Step 103, indoor base station 300 is set up request message to macro base station 600 conversion links;
Step 104,600 pairs of these request for building link message of macro base station are carried out decision-making, judge whether to accept this request for building link.If accept, execution step 105, if do not accept, execution step 108.
Step 105, macro base station 600 sends link control message according to request for building link message to indoor base station 300;
Step 106, indoor base station 300 is sent to visible light source 200 by link control message;
Step 107, visible light source 200 conversion link control messages are to terminal 100.Finally by terminal 100 and indoor base station 300, jointly complete link establishment.
Step 108, refusal request for building link.
In like manner, when terminal 100 sends link releasing request message to visible light source 200, also experience above-mentioned performing step.To this, applicant is not being repeated.
Therefore the control signal that, the present invention sends by macro base station 600 has completed the channel of indoor Femtocell networking and has set up and the Radio Resource control procedure discharging.When macro base station 600 completes after the channel foundation of indoor Femtocell networking, between the terminal 100 in indoor Femtocell community, visible light source 200 and indoor base station 400, complete the mutual of data.
In the present embodiment, can consult Fig. 7, it shows the structural representation of indoor base station in a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention.Indoor base station 300 comprises:
General link processing module 310, be used to the data allocations link circuit resource receiving from indoor gateway 400, link generation data, and for the data that receive from terminal 100 are processed, generate IP (Internet Protocol, interconnection agreement between network) packet;
In the present embodiment, general link processing module 310 can be arranged between the link layer and network layer of Radio interface protocols stack.
Wireless communication module group 320, the data that send for receiving the terminal 100 of visible light source 200 forwardings, and the IP Packet Generation that the data of terminal 100 transmissions that visible light source 200 is forwarded generate is to indoor gateway 400, and for sending link data to visible light source 200, and then be forwarded to terminal 100 by visible light source 200.Wherein, wireless communication module group 320 comprises at least one visible light communication module, to support visible light communication technology.Preferably, wireless communication module group 320 can also comprise various wireless communication module, as wireless local area network communications module, makes indoor base station 300 can receive the data message that need to transmit while using different radio access technologies with transmitting terminal 100.
Particularly, terminal 100 is used different wireless access technologys to send upstream data to visible light source 200, and then is forwarded to indoor base station 300 by visible light source 200.After the upstream data that wireless communication module group 320 receiving terminals 100 in indoor base station 300 send, forward it to general link processing module 310.The upstream data that general link processing module 310 sends terminal 100 is processed, and generates up IP packet, and then by up IP Packet Generation, gives indoor gateway 400 by wireless communication module group 320.Finally, by indoor gateway 400 by up IP Packet Generation to core net 500.Core net 500 finds qualified data to generate downstream IP Packet Generation to indoor gateway 400 according to the up IP packet receiving, and then indoor gateway 400 forwards it to indoor base station 300.General link processing module 310 in indoor base station 300 receives the downstream IP packet that indoor gateway 400 sends, and distribute links resource for it, generate corresponding link data, the selection of wireless communication module group 320 based on link, send link data to visible light source 200, and then be forwarded to terminal 100 by visible light source 200.Therefore, the present invention has realized the terminal communication across different Femtocell community.Be that support of the present invention terminal in visible ray WLAN (wireless local area network) in different chamber communicates.
In like manner, the present invention also supports that the terminal in indoor visible ray WLAN (wireless local area network) and the terminal room in the formed network of macro base station 600 communicate respectively.Only different with above-described embodiment, wireless communication module group 320 is given up IP Packet Generation after indoor gateway 400, by indoor gateway 400 by up IP Packet Generation to macro base station 600.Meanwhile, macro base station 600 by downstream IP Packet Generation to indoor gateway 400.Be the present invention while communicating by letter between across different districts, by different corresponding base stations, carry out data relay, set up the communication of the terminal room in heterogeneous networks.
In the present embodiment, indoor base station 300 is integrated in one with visible light source 200, also can be separately positioned in indoor environment.Preferably, visible light source 200 can be the dual-mode antenna of indoor base station 300 expansions.
Apply technique scheme of the present invention, in the indoor communication system based on visible light communication provided by the invention, by visible light source 200, provide visible light signal, realize the setting to internal home network.Terminal 100 is sent to visible light source 200 by data request information, and then by visible light source 200 forwarding data request messages to indoor base station 300, to realize the visible light communication of terminal 100 and indoor base station 300, and then indoor gateway 400 is according to the data request information of terminal 100 transmissions, in core net 500 and 300 of indoor base stations, carry out transfer of data, finally by indoor base station 300, send the data to terminal 100 again, realized a kind of indoor high-speed rate, high-quality and wireless access technology cheaply.
On the basis of above-described embodiment, refer to Fig. 8, it shows the structural representation of terminal in a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention.Terminal 100 comprises: signal strength detection module 110 and request sending module 120.Wherein,
Signal strength detection module 110, for detection of visible light signal intensity;
Request sending module 120, when pre-conditioned for meeting in visible light signal intensity, sends data request information.
Wherein, data request information can comprise registration message, logout message, switching message etc.
Below, inventor is respectively registration message, logout message, these three kinds of situations of switching message with regard to data request information and sets forth.
When terminal 100 does not communicate while being connected with any network:
Signal strength detection module 110 in terminal 100 detects visible light signal intensity and is greater than predetermined threshold value, and the duration that visible light signal intensity detected is greater than Preset Time threshold value, showing currently has the network environment more stable and that signal is stronger can be for terminal 100 access.Now, the request sending module 120 in terminal 100 sends registration message to visible light source 200, and then is forwarded to indoor base station 300 by visible light source 200, to realize the registration of terminal 100 in the network of indoor base station 300 formation.Wherein, described registration message is described data request information.
When terminal 100 has been set up network service connection:
The network signal intensity that signal strength detection module 110 in terminal 100 detects terminal 100 connected networks is less than predetermined threshold value, and visible light signal intensity detected and be greater than predetermined threshold value, the duration of visible light signal intensity is greater than Preset Time threshold value, shows that the current better network environment that has a network having connected compared to terminal 100 can select access for terminal 100.Now user can, according to user's oneself actual demand, select control terminal 100 to be switched in the network of indoor base station 300 formation.Now, request sending module 120 in terminal 100 sends and handovers messages to visible light source 200, and then be forwarded to indoor base station 300 by visible light source 200, so that terminal 100 is switched to being connected of the network that forms with indoor base station 300 from the connection of the network that is connected with terminal 100.Wherein, described switching message is described data request information.
When the network having formed with indoor base station 300 when terminal 100 establishes a communications link:
Signal strength detection module 110 in terminal 100 cannot detect the visible light signal that meets preset strength in preset time period, show that current terminal 100 is connected and disconnects with the network of indoor base station 300 formation, or show that the network environment that current indoor base station 300 forms breaks down, and is not suitable for terminal 100 accesses.Now, the request sending module 120 in terminal 100 sends logout message to visible light source 200, and then is forwarded to indoor base station 300 by visible light source 200, so that nullify the network that terminal 100 forms from indoor base station 300.Described logout message is described data request information.
It should be noted that, in the above-described embodiments, predetermined threshold value, Preset Time threshold value, preset time period and preset strength etc. all can be defined according to practical experience and to set in system development by system research and development personnel period, also can be by user's self-defining.
On the basis of above-described embodiment, refer to Fig. 9, it shows the another kind of structural representation of indoor base station in a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention.Indoor base station 300 also comprises: authentication module 330.Wherein,
Authentication module 330, for receiving at indoor base station 300 after the data request information of terminal 100 transmissions that forwarded by visible light source 200, from indoor gateway 400, obtain the identity information of the terminal of storage, according to the identity information of terminal and the identify label of terminal 100 of storage, whether authentication terminal 100 is validated user.
Wherein, the data request information that terminal 100 sends comprises the identify label of terminal 100.
The quantity of the user terminal that in the present invention, indoor base station 300 can carry is certain.In order to guarantee the service bearer ability of indoor base station 300 self, indoor base station 300 is not to receive the data request information that arbitrary terminal 100 sends, and sets up with it network service and connect.But the mode authenticating by employing determines whether terminal 100 is validated user.When definite terminal 100 is validated user, show that current terminal 100 is to carry out signing user with indoor base station 300, the data request information that indoor base station 300 allows receiving terminal 100 to send.When definite terminal 100 is illegal user, show that current terminal 100 is not to carry out signing user with indoor base station 300, the data request information that indoor base station 300 refusal response terminals 100 send.
Particularly, the data request information that terminal 100 sends comprises the identify label that represents terminal 100 identity.Indoor base station 300 receives after the data request information of terminal 100 transmissions, obtains the identity information of the terminal 100 of storage from indoor gateway 400.More specifically, indoor gateway 400 stores access list, and described access list comprises the terminal identity information that allows access internal home network.Authentication module 310 is according to described access list, and whether the identify label of sense terminals 100 is registered in access list.If the identify label of terminal 100 is registered in access list, determine that terminal 100 is validated user; If the identify label of terminal 100 is not registered in access list, determine that terminal 100 is illegal user.
In addition, the present invention can also comprise that authentication module 330 is provided with the maximum number of user that allows access, after receiving the request of data information of terminal 100 transmissions, authentication module 330 judges whether the current terminal number having accessed reaches the maximum number of user of the permission access of authentication module 330 settings, if the terminal number having accessed current is less than the maximum number of user of the permission access of authentication module 330 settings, show that current indoor base station 300 still has access capability, the data request information that receiving terminal 100 sends responds.
On the basis of above-described embodiment, refer to Figure 10, it shows the structural representation of indoor gateway in a kind of indoor Femtocell netting communication system based on visible light communication provided by the invention.Indoor gateway 400 comprises: Registering modules 410, cancellation module 420 and refusal module 430.Wherein,
Registering modules 410, the network forming for terminal 100 being registered to indoor base station 300.
Nullify module 420, for the network that terminal 100 is formed from indoor base station 300, nullify.
Refusal module 430, the data request information sending for refusing terminal 100.
In the present embodiment, when authentication module 330 determines that terminal 100 is validated user, registration message or logout message that receiving terminal 100 sends, the registration message that the Registering modules 410 in indoor gateway 400 sends according to terminal 100 is registered to terminal 100 in the network of indoor base station 300 formation; The logout message that cancellation module 420 in indoor gateway 400 sends according to terminal 100 forms terminal 100 network from indoor base station 300, nullify.When authentication module 330 determines that terminal 100 is illegal user, the data request information that the refusal module 430 refusal terminals 100 in indoor gateway 400 send.
It should be noted that, each embodiment in this specification all adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Finally, also it should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Above the indoor Femtocell netting communication system based on visible light communication provided by the present invention is described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (13)
1. the indoor Femtocell netting communication system based on visible light communication, is characterized in that, comprising:
For receiving the terminal of visible light signal;
Be used to described terminal that described visible light signal is provided, and receive at least one visible light source of the data request information of described terminal transmission;
For receiving the data request information of the described terminal transmission forwarding by described visible light source, and described terminal is carried out to the indoor base station of access authentication;
With described indoor base station and core net communication connection, the data request information that the described terminal forwarding for the described visible light source according to receiving sends, between described core net and described indoor base station, carry out Data dissemination and transmission, and complete the indoor gateway to described terminal access control.
2. system according to claim 1, is characterized in that, when comprising a plurality of described visible light source, described a plurality of described visible light sources are stratified and set in the regional extent of described indoor base station covering;
Wherein, described in each, visible light source communicates to connect with described indoor base station respectively, and described in each, visible light source occupies the subregion in the regional extent that described indoor base station covers, for receiving the data request information sending from the described terminal in described subregion.
3. system according to claim 1, is characterized in that, also comprises:
Macro base station with described indoor base station communication connection.
4. system according to claim 3, is characterized in that,
Wave point between described terminal and described indoor base station only retains the function of user plane, the control plane of the wave point between described terminal and described indoor base station is managed by described macro base station, and user plane and the control plane of by described macro base station, being controlled the wave point between described terminal and described indoor base station are separated.
5. system according to claim 4, it is characterized in that, after described macro base station is controlled the user plane of the wave point between described terminal and described indoor base station and control plane and is separated, the control signal sending based on described macro base station, the channel that completes indoor Femtocell networking is set up and the Radio Resource control procedure discharging.
6. system according to claim 1, is characterized in that, described indoor base station comprises:
General link processing module, is used to the data allocations link circuit resource receiving from described indoor gateway, link generation data, and for the data that receive from described terminal are processed, interconnection agreement IP packet between generating network;
Wireless communication module group, the data that send for receiving the described terminal of described visible light source forwarding, and the described IP Packet Generation that the data of the described terminal transmission that described visible light source is forwarded generate is to described indoor gateway, and for sending link data to described visible light source, and then be forwarded to described terminal by described visible light source.
7. system according to claim 6, is characterized in that, described wireless communication module group comprises visible light communication module.
8. system according to claim 7, is characterized in that, described wireless communication module group also comprises wireless local area network communications module.
9. system according to claim 1, is characterized in that, described terminal comprises:
Signal strength detection module, for detection of visible light signal intensity;
Request sending module, when pre-conditioned for meeting in described visible light signal intensity, sends described data request information.
10. system according to claim 9, is characterized in that,
When described terminal does not communicate while being connected with any network, describedly pre-conditionedly described visible light signal intensity detected and be greater than predetermined threshold value for described signal strength detection module, and the duration that described visible light signal intensity detected is greater than Preset Time threshold value, described request sending module is used for sending registration message to described visible light source, and then be forwarded to described indoor base station by described visible light source, to realize the registration of described terminal in the network of described indoor base station formation; Described registration message is described data request information;
When described terminal has been set up network service connection, the described pre-conditioned network signal intensity that described terminal connected network detected for described signal strength detection module is less than predetermined threshold value, and described visible light signal intensity detected and be greater than predetermined threshold value, the duration of described visible light signal intensity is greater than Preset Time threshold value, described request sending module handovers messages to described visible light source for sending, and then be forwarded to described indoor base station by described visible light source, so that described terminal is switched to being connected of the network that forms with described indoor base station from the connection of the network that is connected with described terminal, described switching message is described data request information,
When the network having formed with described indoor base station when described terminal establishes a communications link, describedly pre-conditionedly for described signal strength detection module, the visible light signal that meets preset strength in preset time period, cannot be detected, described request sending module is used for sending logout message to described visible light source, and then be forwarded to described indoor base station by described visible light source, so that nullify the network that described terminal forms from described indoor base station, described logout message is described data request information.
11. systems according to claim 1, is characterized in that, described indoor base station comprises:
Authentication module, for receiving at described indoor base station after the data request information of the described terminal transmission being forwarded by described visible light source, from described indoor gateway, obtain the identity information of the terminal of storage, whether according to the identity information of terminal and the identify label of described terminal of described storage, authenticating described terminal is validated user; Wherein, the data request information that described terminal sends comprises the identify label of described terminal.
12. systems according to claim 11, is characterized in that, described indoor gateway stores has access list, and described access list comprises the terminal identity information that allows the described internal home network of access;
Described authentication module is for the described access list of foundation, and whether the identify label that detects described terminal is registered in described access list, if the identify label of described terminal is registered in described access list, determines that described terminal is validated user; If the identify label of described terminal is not registered in described access list, determine that described terminal is illegal user.
13. systems according to claim 1, is characterized in that, described indoor gateway comprises:
Registering modules, for the network that described endpoint registration is formed to described indoor base station;
Nullify module, for the network that described terminal is formed from described indoor base station, nullify;
Refusal module, the data request information sending for refusing described terminal.
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