CN104104440B - Visible light communication based indoor Femtocell networking communication system - Google Patents
Visible light communication based indoor Femtocell networking communication system Download PDFInfo
- Publication number
- CN104104440B CN104104440B CN201410385107.2A CN201410385107A CN104104440B CN 104104440 B CN104104440 B CN 104104440B CN 201410385107 A CN201410385107 A CN 201410385107A CN 104104440 B CN104104440 B CN 104104440B
- Authority
- CN
- China
- Prior art keywords
- terminal
- visible light
- base station
- indoor
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims abstract description 129
- 230000006855 networking Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 8
- 230000011664 signaling Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 16
- 230000003287 optical effect Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
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 invention relates to the technical field of communication, in particular to an indoor Femtocell networking communication system based on visible light communication.
Background
With the mature penetration of communication standards such as 3GPP (3rd Generation Partnership Project) and LTE (Long Term Evolution)/LTE Advanced, the wide-range network coverage has been basically solved, and how to utilize limited spectrum resources to satisfy data services that increase at any time and the urgent demand for mobile communication network capacity gradually becomes a new research hotspot. Especially in indoor environment, the demand of people for work and entertainment causes continuous enrichment of high-speed services such as streaming media, video on demand, online games and the like, and the requirement on wireless access rate is higher and higher. Therefore, good indoor wireless data services will be the key to the success of future mobile communication networks.
In the face of rapid increase of the number of users and the demand of people for high-speed bandwidth communication, LED (Light-Emitting Diode) Visible Light communication has attracted extensive attention and research because it uses optical frequency band to transmit information and has a wide communication bandwidth, and avoids electromagnetic interference conflict without applying for wireless spectrum.
Visible light communication is an emerging optical wireless communication technology that has evolved over white light LED technology. The LED lamp can realize high-speed wireless communication while completing the traditional lighting function, has the advantages of low power consumption, long service life, small size, easy driving, environmental protection and the like, and is regarded as a fourth generation energy-saving and environment-friendly lighting product. Meanwhile, the white light LED has very high response sensitivity and good modulation characteristics, so that the LED is used for carrying out ultra-high-speed data communication. Therefore, how to use visible light communication as an indoor high-speed, high-quality and low-cost radio access technology becomes an urgent problem to be solved in wireless communication.
Disclosure of Invention
In view of the above problems, the present invention provides an indoor Femtocell networking communication system based on visible light communication, so as to provide an indoor high-rate, high-quality and low-cost wireless access technology. The technical scheme is as follows:
the invention provides an indoor Femtocell networking communication system based on visible light communication, which comprises:
a terminal for receiving visible light signals;
at least one visible light source used for providing the visible light signal for the terminal and receiving the data request message sent by the terminal;
the indoor base station is used for receiving the data request message transmitted by the terminal and forwarded by the visible light source and performing access authentication on the terminal;
and the indoor gateway is in communication connection with the indoor base station and the core network, and is used for distributing and transmitting data between the core network and the indoor base station according to the received data request message transmitted by the terminal and forwarded by the visible light source, and completing access control of the terminal.
Preferably, when a plurality of visible light sources are included, the plurality of visible light sources are arranged in layers in the area covered by the indoor base station;
each visible light source is in communication connection with the indoor base station, occupies a partial area within an area range covered by the indoor base station, and is used for receiving a data request message sent by the terminal in the partial area.
Preferably, the method further comprises the following steps:
and the macro base station is in communication connection with the indoor base station.
Preferably, the terminal and the indoor base station only have a function of retaining a user plane in a radio interface therebetween, a control plane of the radio interface between the terminal and the indoor base station is managed by the macro base station, and the macro base station controls the user plane and the control plane of the radio interface between the terminal and the indoor base station to be separated from each other.
Preferably, after the macro base station controls the user plane and the control plane of the wireless interface between the terminal and the indoor base station to be separated, the macro base station sends a control signaling to complete the radio resource control process of establishing and releasing the channel of the indoor Femtocell network.
Preferably, the indoor base station includes:
a general link processing module, configured to allocate link resources to data received from the indoor gateway, generate link data, and process data received from the terminal, so as to generate an inter-network interconnection protocol IP packet;
and the wireless communication module group is used for receiving the data transmitted by the terminal and forwarded by the visible light source, sending the IP data packet generated by the data transmitted by the terminal and forwarded by the visible light source to the indoor gateway, sending link data to the visible light source, and forwarding the link data to the terminal by the visible light source.
Preferably, the wireless communication module group includes a visible light communication module.
Preferably, the wireless communication module group further includes a wireless local area network communication module.
Preferably, the terminal includes:
the signal intensity detection module is used for detecting the intensity of the visible light signal;
and the request sending module is used for sending the data request message when the intensity of the visible light signal meets a preset condition.
Preferably, when the terminal is not in communication connection with any network, the preset condition is that the signal intensity detection module detects that the visible light signal intensity is greater than a preset threshold and detects that the duration of the visible light signal intensity is greater than a preset time threshold, the request sending module is configured to send a registration message to the visible light source, and then the visible light source forwards the registration message to the indoor base station, so as to register the terminal in the network formed by the indoor base station; the registration message is the data request message;
when the terminal has established network communication connection, the preset condition is that the signal intensity detection module detects that the network signal intensity of a network connected with the terminal is smaller than a preset threshold, and detects that the visible light signal intensity is larger than the preset threshold, the duration of the visible light signal intensity is larger than a preset time threshold, the request sending module is used for sending a switching message to the visible light source, and then the visible light source forwards the switching message to the indoor base station, so that the terminal is switched from the connection with the network connected with the terminal to the connection with the network formed by the indoor base station, and the switching message is the data request message;
when the terminal establishes communication connection with a network formed by the indoor base station, the preset condition is that the signal intensity detection module cannot detect a visible light signal meeting the preset intensity within a preset time period, the request sending module is used for sending a logout message to the visible light source, and then the visible light source forwards the logout message to the indoor base station, so that the terminal logs out from the network formed by the indoor base station, and the logout message is the data request message.
Preferably, the indoor base station includes:
the authentication module is used for acquiring the stored identity information of the terminal from the indoor gateway after the indoor base station receives the data request message transmitted by the terminal and forwarded by the visible light source, and authenticating whether the terminal is a legal user or not according to the stored identity information of the terminal and the identity identification of the terminal; wherein, the data request message sent by the terminal includes the identity of the terminal.
Preferably, the indoor gateway stores an access list, and the access list includes terminal identity information allowing access to the indoor network;
the authentication module is used for detecting whether the identity of the terminal is registered in the access list or not according to the access list, and if the identity of the terminal is registered in the access list, the terminal is determined to be a legal user; and if the identity of the terminal is not registered in the access list, determining that the terminal is an illegal user.
Preferably, the indoor gateway includes:
a registration module, configured to register the terminal in a network formed by the indoor base station;
a logout module, configured to logout the terminal from a network formed by the indoor base station;
and the rejection module is used for rejecting the data request message sent by the terminal.
By applying the technical scheme, in the indoor Femtocell networking communication system based on visible light communication, the visible light signal is provided through the visible light source, and the setting of an indoor network is realized. The terminal sends the data request message to the visible light source, the visible light source forwards the data request message to the indoor base station so as to realize visible light communication between the terminal and the indoor base station, the indoor gateway transmits data between the core network and the indoor base station according to the data request message sent by the terminal, and finally the indoor base station sends the data to the terminal, so that the indoor wireless access technology with high speed, high quality and low cost is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication according to the present invention;
fig. 2 is another schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication according to the present invention;
fig. 3 is a schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication according to still another embodiment of the present invention;
fig. 4 is a schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication according to still another embodiment of the present invention;
fig. 5 is a schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication according to still another embodiment of the present invention;
fig. 6 is a flowchart of link establishment in an indoor Femtocell networking communication system based on visible light communication according to the present invention;
fig. 7 is a schematic structural diagram of an indoor base station in an indoor Femtocell networking communication system based on visible light communication according to the present invention;
fig. 8 is a schematic structural diagram of a terminal in an indoor Femtocell networking communication system based on visible light communication according to the present invention;
fig. 9 is another schematic structural diagram of an indoor base station in an indoor Femtocell networking communication system based on visible light communication according to the present invention;
fig. 10 is a schematic structural diagram of an indoor gateway in an indoor Femtocell networking communication system based on visible light communication provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First, the inventor explains that Femtocell in the present invention refers to microcell.
Example one
Referring to fig. 1, a schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication according to the present invention is shown, including: a terminal 100, at least one visible light source 200, an indoor base station 300, and an indoor gateway 400. Wherein,
the terminal 100 is configured to receive visible light signals.
The visible light source 200 is used for providing a visible light signal to the terminal 100 and for receiving a data request message transmitted by the terminal 100.
The indoor base station 300 is configured to receive a data request message transmitted by the terminal 100 and forwarded by the visible light source 200, to implement communication between the terminal 100 and the indoor base station 300, and to implement access authentication for the terminal 100.
In this embodiment, the access authentication of the terminal 100 is specifically authentication of the terminal 100.
In the present invention, the visible light source 200 may be an extended transceiving antenna of the indoor base station 300.
The indoor gateway 400 is communicatively connected to the indoor base station 300 and the core network 500, and is configured to distribute and transmit data between the core network 500 and the indoor base station 300 according to the data request message sent by the terminal 100, and complete access control on the terminal 100.
In the present embodiment, the access control to the terminal 100 may include enabling registration, deregistration, etc. of the terminal 100.
For better understanding of the present invention, the inventor will explain the present invention in detail by taking the application of the present invention to a user's home indoor scene as an example. Please refer to fig. 2 and fig. 3, which respectively show a schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication according to the present invention.
The present invention may comprise a plurality of visible light sources 200, wherein the plurality of visible light sources 200 are layered within the coverage area of the indoor base station 100. Specifically, each visible light source 200 is in communication connection with the indoor base station 100, and each visible light source 200 occupies a partial area within an area range covered by the indoor base station 100, and is used for receiving a data request message sent by the terminal 100 in the partial area.
More vividly, it can be understood that the indoor base station 100 is disposed in the user's home indoor environment, which covers all indoor environments of the user, such as two bedrooms included. In the large area covered by the indoor base station 100, each bedroom is separately provided with a visible light source 200 to form a visible light Femtocell cell. Each visible light Femtocell cell is used for bearing the packet data service of indoor users. That is, in the present embodiment, each visible light source 200 may form a visible light Femtocell cell.
Specifically, in the present invention, the user includes a plurality of rooms, and the indoor base station 100 provides a large-area wireless local area environment for the plurality of rooms. Wherein, each room is further provided with at least one visible light source 200 to form a visible light wireless local area environment. In a visible light wireless local area environment formed in a room, the visible light wireless local area environment can be further divided into a plurality of visible light micro-cells through LED table lamps and the like to support temporary or local grouping service requirements, and flexible and effective layered coverage in a visible light wireless local area environment range is achieved. Specifically, by adjusting the position, such as the direction, the angle, and the height, of the visible light source 200, the coverage area of the visible light signal, that is, the range of the visible light wireless local area network formed in the room, can be controlled, and by adjusting the brightness of the visible light source 200, the intensity of the visible light signal can be controlled. It should be noted that, since the visible light signal is transmitted along with the light wave transmission of the visible light source 200, the visible light signal exists at the place where the visible light source 200 can irradiate. The on-off control of the visible light wireless local area network is realized by controlling the on-off of the visible light source 200.
Therefore, the invention supports that under the visible light Femtocell cell environment, visible light microcells in a smaller range can be arranged as required to support temporary or local grouping service requirements, and flexible and effective layered coverage in the Femtocell range is realized.
Specifically, the inventors continued detailed description with fig. 4 as an example. In this embodiment, each room shown in fig. 4 is referred to as a visible light microcell (i.e., visible light Femtocell).
In the visible light wireless local area network environment formed in the home of the user, a photoelectric detector for converting an optical signal into an electric signal and a visible light communication concentrator for receiving the electric signal sent by the photoelectric detector are installed on the ceiling, and the electric signal is simply processed and modulated onto a visible light source to become the optical signal. In practical application, a visible light communication hub in a visible light wireless local area network is a core part in visible light communication. It receives information from the end user and simultaneously transmits the received information in a broadcast manner via the visible light source at time intervals.
In the prior art, a visible light communication Adapter VLC Adapter is used for modulating information of an end user into a light signal and receiving the visible light signal. In this embodiment, the terminal 100 is specifically a terminal having a function of receiving and transmitting visible light signals. Therefore, the terminal 100 in the present invention may be an electronic device mounted with a visible light communication adapter.
In this embodiment, when the terminal 101 in the visible-light microcell a wants to send data information to the terminal 102 in the visible-light microcell B, the visible-light communication adapter in the terminal 101 modulates the data information into an optical signal to be sent to the photodetector, and then the photodetector converts the optical signal into an electrical signal to be sent to the visible-light communication hub, the visible-light communication hub performs simple processing on the electrical signal to be modulated onto the visible-light source 200 to become an optical signal to be sent to the terminal 102 in the visible-light microcell B, and the visible-light communication adapter in the terminal 102 receives the optical signal, demodulates the information belonging to the terminal 102, and inputs the information into the terminal 102 to be read, thereby implementing D2D (Device-to-Device, terminal-through) communication between terminals in the visible-light wireless local area network. Namely, the invention supports the terminals in the same indoor visible light wireless local area network to carry out direct communication between the terminals.
In the present invention, the visible light source 200 may be a white LED lamp.
The foregoing embodiment illustrates a D2D data transmission process between terminals in a visible light wireless local area network, and please refer to fig. 5, which shows a schematic structural diagram of an indoor Femtocell networking communication system based on visible light communication according to the present invention. The embodiment is based on an application scenario of data transmission across terminals of Femtocell cells.
In practical applications, each user home forms a visible light wireless local area network, which is hereinafter referred to as a Femtocell cell. Meanwhile, the invention also comprises the macro cell which covers all the Femtocell cells in a certain area. Wherein the macro cell comprises a macro base station 600. The radio interface between the terminal 100 and the indoor base station 300 in the Femtocell cell only retains the function of the user plane, and the control plane is handed over to the macro base station 600 for implementation and management. That is, the macro base station 600 controls the separation of the user plane and the control plane of the radio interface between the terminal 100 and the indoor base station 300.
The control plane of the wireless interface between the terminal 100 and the indoor base station 300 is controlled by the macro base station 600 to be separated from the user plane, so that the wireless network capacity can be greatly improved, meanwhile, the effective mobility management and network coverage of the macro base station 600 can be ensured, the Femtocell cell is completely separated from the traditional base station system architecture, and the effective fusion of heterogeneous networks is realized. In addition, the control plane and the user plane of the wireless interface between the terminal 100 and the indoor base station 300 are separated, so that the Femtocell cell has high flexibility and autonomy, the work division of the macro base station 600, the indoor base station 300 and the terminal 100 is clear, the heterogeneous network architecture is simplified, and the implementation is easy.
In this embodiment, the Femtocell cell and the macrocell support a general master-slave communication method. The macro base station 600 operates on the existing frequency channel and the indoor base station 300 is assigned a higher frequency band. Such a configuration allows the control plane of the indoor base station 300 to be still under the control of the more reliable macro-cellular layer, and the system capacity is also improved due to the huge bandwidth of visible light communication obtained by the separated user plane. In the aspect of cell design and deployment, cell planning, configuration and optimization do not need to be carried out again by considering the interference between the macro base station 600 and the Femtocell cell.
In the invention, a Femtocell cell formed in a visible light room is different from a traditional cell, and does not have cell-specific control information and a control channel, and the data interaction is completed by the Femtocell cell depending on the signaling control of a macro cell. Specifically, the Femtocell cell completes the radio resource control processes such as channel establishment and release of the Femtocell cell under the control of the macro cell by separating the control plane from the user plane. As shown in fig. 6. The macro base station 600 sends out control signaling, which is responsible for network coverage in a wider range, ensuring basic and reliable network control and management services; the Femtocell cell provides a data transmission path for user service based on the signaling, and is focused on high-speed wireless data coverage of indoor intervals. Taking an example that a control signaling sent by the macro base station 600 provides a data transmission link for a user service, the method includes:
step 101, the terminal 100 sends a link establishment request message to the visible light source 200;
102, the visible light source 200 forwards a link establishment request message to the indoor base station 300;
step 103, the indoor base station 300 forwards a link establishment request message to the macro base station 600;
in step 104, the macro base station 600 makes a decision on the link establishment request message, and determines whether to accept the link establishment request. If yes, go to step 105, and if not, go to step 108.
Step 105, the macro base station 600 sends a link control message to the indoor base station 300 according to the link establishment request message;
step 106, the indoor base station 300 sends the link control message to the visible light source 200;
in step 107, the visible light source 200 forwards the link control message to the terminal 100. Eventually, the terminal 100 and the indoor base station 300 together complete link establishment.
Step 108, the link establishment request is rejected.
Similarly, when the terminal 100 transmits a link release request message to the visible light source 200, the above implementation steps are also undergone. The applicant is not repeated here.
Therefore, the invention completes the wireless resource control process of channel establishment and release of the indoor Femtocell networking through the control signaling sent by the macro base station 600. After the macro base station 600 completes the establishment of the channel of the indoor Femtocell network, the terminal 100, the visible light source 200 and the indoor base station 400 in the indoor Femtocell cell complete the data interaction.
In this embodiment, reference may be made to fig. 7, which is a schematic structural diagram illustrating an indoor base station in an indoor Femtocell networking communication system based on visible light communication according to the present invention. The indoor base station 300 includes:
a universal link processing module 310, configured to allocate link resources to data received from the indoor gateway 400, generate link data, and process data received from the terminal 100, and generate an IP (Internet Protocol ) data packet;
in this embodiment, the generic link processing module 310 may be disposed between a link layer and a network layer of a radio interface protocol stack.
The wireless communication module group 320 is configured to receive data transmitted by the terminal 100 and forwarded by the visible light source 200, send an IP packet generated by the data transmitted by the terminal 100 and forwarded by the visible light source 200 to the indoor gateway 400, and send link data to the visible light source 200, where the link data is forwarded to the terminal 100 by the visible light source 200. The wireless communication module group 320 includes at least one visible light communication module to support visible light communication technology. Preferably, the wireless communication module group 320 may further include a plurality of wireless communication modules, such as a wireless local area network communication module, so that the indoor base station 300 can receive and transmit data information that needs to be transmitted when the terminal 100 uses different radio access technologies.
Specifically, the terminal 100 sends uplink data to the visible light source 200 using different radio access technologies, and the uplink data is forwarded to the indoor base station 300 by the visible light source 200. After receiving the uplink data sent by the terminal 100, the wireless communication module group 320 in the indoor base station 300 forwards the uplink data to the general link processing module 310. The universal link processing module 310 processes the uplink data transmitted by the terminal 100 to generate an uplink IP data packet, and the wireless communication module group 320 transmits the uplink IP data packet to the indoor gateway 400. Finally, the indoor gateway 400 sends the uplink IP packet to the core network 500. The core network 500 finds data meeting the conditions according to the received uplink IP data packet, generates a downlink IP data packet, and sends the downlink IP data packet to the indoor gateway 400, and the indoor gateway 400 forwards the downlink IP data packet to the indoor base station 300. The general link processing module 310 in the indoor base station 300 receives the downlink IP data packet sent by the indoor gateway 400, allocates link resources for the downlink IP data packet, and generates corresponding link data, and the wireless communication module 320 sends the link data to the visible light source 200 based on the selection of the link, and further forwards the link data to the terminal 100 by the visible light source 200. Therefore, the invention realizes the terminal communication across different Femtocell cells. Namely, the invention supports the communication of the terminals in different indoor visible light wireless local area networks.
Similarly, the present invention also supports communication between terminals in the indoor visible light wireless local area network and terminals in the network formed by the macro base station 600. Only different from the above embodiment, after the wireless communication module group 320 sends the uplink IP data packet to the indoor gateway 400, the indoor gateway 400 sends the uplink IP data packet to the macro base station 600. Meanwhile, the macro base station 600 transmits the downlink IP packet to the indoor gateway 400. Namely, when the invention is used for communication between different cells, the data transfer is carried out through different corresponding base stations, and the communication between terminals in different networks is established.
In the present embodiment, the indoor base station 300 and the visible light source 200 are integrated into a whole, or may be separately installed in an indoor environment. Preferably, the visible light source 200 may be an extended transceiver antenna of the indoor base station 300.
By applying the technical scheme of the invention, in the indoor communication system based on visible light communication provided by the invention, the visible light source 200 provides a visible light signal to realize the setting of an indoor network. The terminal 100 sends the data request message to the visible light source 200, and the visible light source 200 forwards the data request message to the indoor base station 300, so as to implement visible light communication between the terminal 100 and the indoor base station 300, and then the indoor gateway 400 performs data transmission between the core network 500 and the indoor base station 300 according to the data request message sent by the terminal 100, and finally the indoor base station 300 sends the data to the terminal 100, thereby implementing an indoor wireless access technology with high speed, high quality and low cost.
On the basis of the foregoing embodiment, please refer to fig. 8, which illustrates a schematic structural diagram of a terminal in an indoor Femtocell networking communication system based on visible light communication according to the present invention. The terminal 100 includes: a signal strength detection module 110 and a request transmission module 120. Wherein,
a signal strength detection module 110, configured to detect a visible light signal strength;
the request sending module 120 is configured to send a data request message when the visible light signal strength meets a preset condition.
The data request message may include a registration message, a deregistration message, a handover message, etc.
In the following, the inventor explains three cases that the data request message is a registration message, a deregistration message, and a handover message, respectively.
When the terminal 100 is not in communication connection with any network:
when the signal strength detecting module 110 in the terminal 100 detects that the visible light signal strength is greater than the preset threshold and detects that the duration of the visible light signal strength is greater than the preset time threshold, it indicates that a relatively stable network environment with a strong signal is currently available for the terminal 100 to access. At this time, the request sending module 120 in the terminal 100 sends a registration message to the visible light source 200, and the visible light source 200 forwards the registration message to the indoor base station 300, so as to register the terminal 100 in the network formed by the indoor base station 300. Wherein the registration message is the data request message.
When the terminal 100 has established a network communication connection:
when the signal strength detection module 110 in the terminal 100 detects that the network signal strength of the network to which the terminal 100 is connected is smaller than the preset threshold, and detects that the visible light signal strength is greater than the preset threshold, the duration of the visible light signal strength is greater than the preset time threshold, which indicates that a better network environment than the network to which the terminal 100 is already connected is currently available for the terminal 100 to select to access. At this time, the user may select the control terminal 100 to switch to the network formed by the indoor base station 300 according to the actual requirement of the user. At this time, the request sending module 120 in the terminal 100 sends a switching message to the visible light source 200, and further, the visible light source 200 forwards the switching message to the indoor base station 300, so that the terminal 100 switches from the connection with the network to which the terminal 100 is connected to the connection with the network formed by the indoor base station 300. Wherein the handover message is the data request message.
When the terminal 100 has established a communication connection with the network formed by the indoor base station 300:
when the signal strength detection module 110 in the terminal 100 cannot detect the visible light signal meeting the preset strength within the preset time period, it indicates that the network connection formed between the current terminal 100 and the indoor base station 300 is disconnected, or indicates that the network environment formed by the current indoor base station 300 fails and is not suitable for the terminal 100 to access. At this time, the request sending module 120 in the terminal 100 sends a logout message to the visible light source 200, and the logout message is further forwarded to the indoor base station 300 by the visible light source 200, so that the terminal 100 logs out from the network formed by the indoor base station 300. The logout message is the data request message.
It should be noted that, in the above embodiment, the preset threshold, the preset time period, the preset intensity, and the like may be set by a system developer according to actual experience definition during a system development period, or may be defined by a user.
On the basis of the foregoing embodiment, please refer to fig. 9, which shows another schematic structural diagram of an indoor base station in an indoor Femtocell networking communication system based on visible light communication according to the present invention. The indoor base station 300 further includes: an authentication module 330. Wherein,
the authentication module 330 is configured to, after the indoor base station 300 receives the data request message sent by the terminal 100 and forwarded by the visible light source 200, obtain the stored identity information of the terminal from the indoor gateway 400, and authenticate whether the terminal 100 is a valid user according to the stored identity information of the terminal and the identity identifier of the terminal 100.
The data request message sent by the terminal 100 includes the identity of the terminal 100.
In the present invention, the number of user terminals that can be carried by the indoor base station 300 is constant. In order to ensure the service carrying capability of the indoor base station 300 itself, the indoor base station 300 does not receive the data request message sent by any terminal 100 and establishes a network communication connection with the data request message. But determines whether the terminal 100 is a legitimate user by using authentication. When it is determined that the terminal 100 is a valid user, indicating that the current terminal 100 is a user subscribed with the indoor base station 300, the indoor base station 300 allows receiving the data request message sent by the terminal 100. When it is determined that the terminal 100 is an illegal user, indicating that the current terminal 100 is not a subscriber subscribed with the indoor base station 300, the indoor base station 300 rejects the data request message sent by the response terminal 100.
Specifically, the data request message sent by the terminal 100 includes an identity identifier representing the identity of the terminal 100. After receiving the data request message sent by the terminal 100, the indoor base station 300 acquires the stored identity information of the terminal 100 from the indoor gateway 400. More specifically, the indoor gateway 400 stores an access list including terminal identity information allowing access to the indoor network. The authentication module 310 detects whether the identity of the terminal 100 is registered in the admission list according to the admission list. If the identity of the terminal 100 is registered in the access list, determining that the terminal 100 is a legal user; if the identity of the terminal 100 is not registered in the admission list, the terminal 100 is determined to be an illegal user.
In addition, the present invention may further include that the authentication module 330 is provided with a maximum number of users allowed to access, after receiving the data request information sent by the terminal 100, the authentication module 330 determines whether the number of currently accessed terminals reaches the maximum number of users allowed to access, which is set by the authentication module 330, and if the number of currently accessed terminals is smaller than the maximum number of users allowed to access, which is set by the authentication module 330, it indicates that the current indoor base station 300 still has access capability, and the data request message sent by the receiving terminal 100 responds.
On the basis of the foregoing embodiment, please refer to fig. 10, which shows a schematic structural diagram of an indoor gateway in an indoor Femtocell networking communication system based on visible light communication according to the present invention. The indoor gateway 400 includes: a registration module 410, a deregistration module 420, and a rejection module 430. Wherein,
a registering module 410, configured to register the terminal 100 in the network formed by the indoor base station 300.
A deregistration module 420, configured to deregister the terminal 100 from the network formed by the indoor base station 300.
A rejecting module 430, configured to reject the data request message sent by the terminal 100.
In this embodiment, when the authentication module 330 determines that the terminal 100 is a valid user, the registration module 410 in the indoor gateway 400 registers the terminal 100 in the network formed by the indoor base station 300 according to the registration message sent by the terminal 100 by receiving a registration message or a logout message sent by the terminal 100; the deregistration module 420 in the indoor gateway 400 deregisters the terminal 100 from the network formed by the indoor base station 300 according to a deregistration message transmitted by the terminal 100. When the authentication module 330 determines that the terminal 100 is an illegal user, the rejection module 430 in the indoor gateway 400 rejects the data request message transmitted by the terminal 100.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The indoor Femtocell networking communication system based on visible light communication provided by the invention is described in detail, a specific example is applied in the text to explain the principle and the implementation mode of the invention, and the description of the above embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (11)
1. An indoor Femtocell networking communication system based on visible light communication, comprising:
a terminal for receiving visible light signals;
at least one visible light source used for providing the visible light signal for the terminal and receiving the data request message sent by the terminal;
the indoor base station is used for receiving the data request message transmitted by the terminal and forwarded by the visible light source and performing access authentication on the terminal;
the indoor gateway is in communication connection with the indoor base station and the core network, and is used for distributing and transmitting data between the core network and the indoor base station according to the received data request message transmitted by the terminal and forwarded by the visible light source, and completing access control of the terminal;
the signal intensity detection module is used for detecting the intensity of the visible light signal;
the request sending module is used for sending the data request message when the visible light signal intensity meets a preset condition;
when the terminal is not in communication connection with any network, the preset condition is that the signal intensity detection module detects that the visible light signal intensity is greater than a preset threshold value, and detects that the duration of the visible light signal intensity is greater than a preset time threshold value, the request sending module is used for sending a registration message to the visible light source, and the registration message is forwarded to the indoor base station by the visible light source, so that the terminal is registered in the network formed by the indoor base station; the registration message is the data request message;
when the terminal has established network communication connection, the preset condition is that the signal intensity detection module detects that the network signal intensity of a network connected with the terminal is smaller than a preset threshold, and detects that the visible light signal intensity is larger than the preset threshold, the duration of the visible light signal intensity is larger than a preset time threshold, the request sending module is used for sending a switching message to the visible light source, and then the visible light source forwards the switching message to the indoor base station, so that the terminal is switched from the connection with the network connected with the terminal to the connection with the network formed by the indoor base station, and the switching message is the data request message;
when the terminal establishes communication connection with a network formed by the indoor base station, the preset condition is that the signal intensity detection module cannot detect a visible light signal meeting the preset intensity within a preset time period, the request sending module is used for sending a logout message to the visible light source, and then the visible light source forwards the logout message to the indoor base station, so that the terminal logs out from the network formed by the indoor base station, and the logout message is the data request message.
2. The system according to claim 1, wherein when a plurality of the visible light sources are included, the plurality of the visible light sources are layered within an area covered by the indoor base station;
each visible light source is in communication connection with the indoor base station, occupies a partial area within an area range covered by the indoor base station, and is used for receiving a data request message sent by the terminal in the partial area.
3. The system of claim 1, further comprising:
and the macro base station is in communication connection with the indoor base station.
4. The system of claim 3,
the wireless interface between the terminal and the indoor base station only retains the function of a user plane, the control plane of the wireless interface between the terminal and the indoor base station is managed by the macro base station, and the macro base station controls the separation of the user plane and the control plane of the wireless interface between the terminal and the indoor base station.
5. The system according to claim 4, wherein after the macro base station controls the separation of the user plane and the control plane of the wireless interface between the terminal and the indoor base station, the macro base station completes the radio resource control process of the channel establishment and release of the indoor Femtocell networking based on the control signaling sent by the macro base station.
6. The system of claim 1, wherein the indoor base station comprises:
a general link processing module, configured to allocate link resources to data received from the indoor gateway, generate link data, and process data received from the terminal, so as to generate an inter-network interconnection protocol IP packet;
and the wireless communication module group is used for receiving the data transmitted by the terminal and forwarded by the visible light source, sending the IP data packet generated by the data transmitted by the terminal and forwarded by the visible light source to the indoor gateway, sending link data to the visible light source, and forwarding the link data to the terminal by the visible light source.
7. The system of claim 6, wherein the set of wireless communication modules comprises a visible light communication module.
8. The system of claim 7, wherein the set of wireless communication modules further comprises a wireless local area network communication module.
9. The system of claim 1, wherein the indoor base station comprises:
the authentication module is used for acquiring the stored identity information of the terminal from the indoor gateway after the indoor base station receives the data request message transmitted by the terminal and forwarded by the visible light source, and authenticating whether the terminal is a legal user or not according to the stored identity information of the terminal and the identity identification of the terminal; wherein, the data request message sent by the terminal includes the identity of the terminal.
10. The system according to claim 9, wherein the indoor gateway stores an access list, the access list includes terminal identity information allowing access to an indoor network, and the indoor network is a wireless local area network provided by an indoor base station;
the authentication module is used for detecting whether the identity of the terminal is registered in the access list or not according to the access list, and if the identity of the terminal is registered in the access list, the terminal is determined to be a legal user; and if the identity of the terminal is not registered in the access list, determining that the terminal is an illegal user.
11. The system of claim 1, wherein the indoor gateway comprises:
a registration module, configured to register the terminal in a network formed by the indoor base station;
a logout module, configured to logout the terminal from a network formed by the indoor base station;
and the rejection module is used for rejecting the data request message sent by the terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410385107.2A CN104104440B (en) | 2014-08-07 | 2014-08-07 | Visible light communication based indoor Femtocell networking communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410385107.2A CN104104440B (en) | 2014-08-07 | 2014-08-07 | Visible light communication based indoor Femtocell networking communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104104440A CN104104440A (en) | 2014-10-15 |
| CN104104440B true CN104104440B (en) | 2017-02-22 |
Family
ID=51672280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410385107.2A Active CN104104440B (en) | 2014-08-07 | 2014-08-07 | Visible light communication based indoor Femtocell networking communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104104440B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2014776B1 (en) * | 2015-05-07 | 2017-01-26 | Eldolab Holding Bv | Method for changing the identification code of a light source in visible light communication systems. |
| EP3332614B1 (en) * | 2015-08-05 | 2022-09-14 | Lutron Technology Company LLC | Commissioning and controlling load control devices |
| CN106936886B (en) * | 2015-12-31 | 2020-10-23 | 深圳光启合众科技有限公司 | Robot cluster communication method and system |
| CN106209232B (en) * | 2016-07-13 | 2018-05-22 | 长春理工大学 | A kind of wireless communication networks for solving indoor non line of sight visible light communication |
| CN106209233B (en) * | 2016-07-13 | 2018-10-19 | 深圳喜乐航科技有限公司 | A kind of main cabin reading lamp wireless communications method and system based on Li-Fi |
| CN107040946B (en) * | 2017-04-28 | 2020-07-17 | 无锡世纪联橙科技有限公司 | L IFI communication technology-based conversion method and system |
| CN111988085B (en) * | 2019-05-24 | 2022-05-20 | Oppo广东移动通信有限公司 | LiFi-based communication method, device, terminal and emergency lighting equipment |
| CN110233888A (en) * | 2019-05-31 | 2019-09-13 | 重庆思柏高科技有限公司 | Internet-of-things terminal cut-in method and device, Internet of things system based on intensity of illumination |
| CN112152712B (en) * | 2019-06-28 | 2022-08-16 | Oppo广东移动通信有限公司 | Communication system, communication method, and communication device |
| CN110266384B (en) * | 2019-06-28 | 2021-02-02 | Oppo广东移动通信有限公司 | Local area network communication control method and related product |
| CN112188707B (en) * | 2019-07-04 | 2023-08-08 | 松下知识产权经营株式会社 | Control method of lighting system and lighting system |
| CN110493837B (en) * | 2019-07-04 | 2021-08-06 | 西安理工大学 | Method for realizing efficient switching in VLC/RF heterogeneous network |
| CN110440808A (en) * | 2019-08-13 | 2019-11-12 | Oppo（重庆）智能科技有限公司 | Indoor orientation method, system and device based on visible light communication |
| CN112436893B (en) * | 2019-08-26 | 2022-07-12 | Oppo广东移动通信有限公司 | Information transmission method and device and electronic equipment |
| CN111147140A (en) * | 2020-02-01 | 2020-05-12 | 东莞智联光频科技有限公司 | Mobile communication network system based on visible light communication technology |
| CN114615114B (en) * | 2022-03-15 | 2024-06-11 | 西安邮电大学 | Method for obtaining channel information by transmitting terminal of indoor visible light communication system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011000090A1 (en) * | 2009-07-02 | 2011-01-06 | Nortel Networks Limited | Access point and terminal communications |
| CN102625479A (en) * | 2011-01-28 | 2012-08-01 | 郭丰亮 | ZigBee and LED visible light communication based system of Internet of things system and communication method thereof |
| CN103427903A (en) * | 2013-08-14 | 2013-12-04 | 东南大学 | Visible light communication system based on wireless access point |
| CN103684529A (en) * | 2012-09-20 | 2014-03-26 | 中兴通讯股份有限公司 | Signal transmission method and device |
| CN103716908A (en) * | 2013-12-30 | 2014-04-09 | 中国人民解放军信息工程大学 | Indoor integration network system based on visible light communication and communication access method |
| CN103945553A (en) * | 2013-01-18 | 2014-07-23 | 上海贝尔股份有限公司 | Carrier aggregation based method for separating control plane from user plane |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101850815B1 (en) * | 2011-03-08 | 2018-04-20 | 삼성전자주식회사 | Wireless network system, wireless device and registering method of the wireless device |
-
2014
- 2014-08-07 CN CN201410385107.2A patent/CN104104440B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011000090A1 (en) * | 2009-07-02 | 2011-01-06 | Nortel Networks Limited | Access point and terminal communications |
| CN102625479A (en) * | 2011-01-28 | 2012-08-01 | 郭丰亮 | ZigBee and LED visible light communication based system of Internet of things system and communication method thereof |
| CN103684529A (en) * | 2012-09-20 | 2014-03-26 | 中兴通讯股份有限公司 | Signal transmission method and device |
| CN103945553A (en) * | 2013-01-18 | 2014-07-23 | 上海贝尔股份有限公司 | Carrier aggregation based method for separating control plane from user plane |
| CN103427903A (en) * | 2013-08-14 | 2013-12-04 | 东南大学 | Visible light communication system based on wireless access point |
| CN103716908A (en) * | 2013-12-30 | 2014-04-09 | 中国人民解放军信息工程大学 | Indoor integration network system based on visible light communication and communication access method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104104440A (en) | 2014-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104104440B (en) | Visible light communication based indoor Femtocell networking communication system | |
| US11317329B2 (en) | Method and apparatus for providing services of network to terminal by using slice | |
| CN107409345B (en) | Mobile communication method, device and system | |
| EP3488626B1 (en) | Method and apparatus for providing services of network to terminal by using slice | |
| US10264520B2 (en) | Method of supporting mobility of UE supporting/using D2D communication in wireless mobile communication system | |
| US10588160B2 (en) | Method for handling an ID collision for a D2D communication system and device therefor | |
| CN103907391B (en) | For the system and method for quick initial network link establishing | |
| RU2643185C1 (en) | Notification method for d2d communication system and device for it | |
| KR20180005134A (en) | method and apparatus for specified attach procedure and mobility and paging support in data communication network | |
| US12131648B2 (en) | Methods and apparatus related to a platooning group | |
| JP2016521483A (en) | Device discovery information reception method, device discovery information transmission method, and user equipment | |
| KR20170020421A (en) | Electronic device on user equipment side in wireless communication system and wireless communication method | |
| US9750066B2 (en) | Method and a network structure for providing device connectivity to a radio access network | |
| CN105075386A (en) | Network-assisted D2D communication using D2D capability information | |
| JP2018503320A (en) | Service-based cell reselection | |
| CN104769979A (en) | Device handshake/discovery for inter-device communication in wireless communication systems | |
| WO2018084201A1 (en) | Wireless terminal and base station | |
| US20160021693A1 (en) | Method for establishing a direct communication, and base stations, a gateway and a device therefor | |
| EP3410751B1 (en) | Terminal discovery methods, terminals, and server | |
| WO2016018009A1 (en) | Method and device for controlling transmission power of terminal in d2d communication | |
| CN104349497B (en) | Close to discovery method and apparatus between UE | |
| CN102036414A (en) | Method and system for realizing X2 function | |
| CN104823514B (en) | Establish backhaul link method, apparatus and system | |
| CN105142097A (en) | Method and system for realizing terminal access | |
| JP5938966B2 (en) | Radio base station apparatus, connection mode switching method in radio base station apparatus, and radio communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |