CN102291283A - Digital home network system - Google Patents
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- CN102291283A CN102291283A CN2011102214374A CN201110221437A CN102291283A CN 102291283 A CN102291283 A CN 102291283A CN 2011102214374 A CN2011102214374 A CN 2011102214374A CN 201110221437 A CN201110221437 A CN 201110221437A CN 102291283 A CN102291283 A CN 102291283A
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Abstract
The embodiment of the invention discloses a digital home network system, which comprises a main home network, home sub-network, a main home network gateway and a home network sub-gateway, wherein the home sub-network is connected with the main home network by the home network sub-gateway; and the main home network is connected with an external network by the main home network gateway and used for interconnection among the main home network gateway, the home network sub-network, terminal equipment and a control terminal. In the embodiment of the invention, a layered network design is adopted and a network layout is rationally planned, so network requirements of different rates can be met; a wireless way and a wired way are combined, so support can be provided for various services of a home network; a power line is taken as a transmission medium, so the cost can be saved and maintenance is convenient; and the stability of the digital home network can be improved.
Description
Technical field
The present invention relates to the digital home network technical field, relate in particular to a kind of digital family network system.
Background technology
Along with the continuous development of social informatization, the informationization of household internal also more and more obtains people's attention.People also have higher requirement to the ease for use and the compatibility of household appliances.Following household appliances must be networking, intelligent, hommization, become information terminal, provide services on the Internet.Along with computer technology, the communication technology, sensing technology, the continuous development of bridging technology etc., home network is development thereupon also.Various household electrical appliances communicate and exchanges data by different mutual contact modes, realize " interconnecting " of household electrical appliance, make people can obtain information more quickly, the control housed device, thus greatly improve the comfortableness of family and recreational.
Home network is meant a kind of local area network (LAN) that the audio ﹠ video equipment in family's category, household electrical appliance, information equipment, water power hot air heating gauge table, illuminator, security alarm help system etc. are linked together and form, various terminal equipments are realized networking by home network, can interconnect, realize the management and service of diverse networkization, realize sharing of resource and service, form the interconnected systems of family information, amusement, control.
Existing home network architecture exists many deficiencies.At first, adopt twisted-pair feeder or telephone wire to transmit, along with the increase of home appliance, home network inside exists wiring to be increased, disadvantages such as complex circuit, and this makes troubles to maintenance in the future, and economic drain is also than higher.(Service Location Protocol SLP), still needs user's static configuration and management to the positioning service agreement that adopts in Service Management, can not accomplish zero configuration and real plug and play.To the wireless sub network part, the existing network system does not provide too much real suggestion yet, and the network of different rates has only been provided conceptual planning, and to energy-conservation, stability of network etc. are inconsiderate.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the invention provides a kind of digital family network system, can adapt to the network requirement of different rates, and save cost.
In order to address the above problem, the present invention proposes a kind of digital family network system, described digital family network system comprises: family's major network, family's subnet, home network primary gateway, home network subnet close; Described family subnet closes with described family major network by described home network subnet and is connected; Described family major network is connected with external network by described home network primary gateway; Described family major network is used for interconnected between described home network primary gateway, described home network subnet pass, terminal equipment and the control terminal.
Preferably, the physical layer of described family major network adopts power line as transmission medium.
Preferably, the agreement that the network layer of described family major network adopts comprises transmission control protocol/internet interconnection protocol (Transmission Control Protocol/Internet Protocol, TCP/IP) and User Datagram Protocol (User Datagram Protocol, UDP).
Preferably, described digital family network system adopts with different levels network topology structure.
Preferably, described family subnet includes spider lines and/or wireless network.
Preferably, described wireless network adopts the Zigbee agreement.
Preferably, described terminal equipment closes with described family major network by described home network subnet and links to each other, and/or described terminal equipment links to each other with described home network subnet pass by described family major network with described control terminal.
Preferably, described home network primary gateway also is used for family's major network is configured and manages.
Preferably, UPnP UPNP agreement is adopted in the Service Management of described family major network.
In embodiments of the present invention, adopt the layer-stepping Network Design, the network topology of making rational planning for can adapt to the network requirement of friction speed; And wireless mode combines with wired mode, can support the home network multiple business; Adopt power line can save cost, and can safeguard easily as transmission medium; Can improve the stability of digital home network.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is that the structure of first embodiment of digital home network of the present invention is formed schematic diagram;
Fig. 2 is the UPNP operation principle schematic diagram in the embodiment of the invention;
Fig. 3 is that the structure of second embodiment of digital home network of the present invention is formed schematic diagram;
Fig. 4 is that the structure of the 3rd embodiment of digital home network of the present invention is formed schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is that first example structure of digital home network of the present invention is formed schematic diagram, and as shown in Figure 1, this digital home network comprises: family's major network 1, family's subnet 2, home network primary gateway 3, home network subnet close 4; Family's subnet 2 closes 4 by the home network subnet and is connected with family major network 1; Family's major network 1 is connected with external network by home network primary gateway 3; Family's major network 1 is used for that home network primary gateway 3, home network subnet close 4, interconnected between terminal equipment and the control terminal.
The included home network primary gateway of the digital family network system of the embodiment of the invention is used to connect household internal network and external network, from different external network receiving communication signals and send to a plurality of control terminals of household internal network, and carry out the function conversion between household internal network and the external network; Equipment in family's major network adopts major network communication protocol, has unified device description file, carries out information and exchanges data with the family major network; A plurality of home network subnets close, and comprise wired subnet gateway, and the wireless sub network gateway is realized the interconnected of interconnected, family's subnet of each family's subnet internal unit and family's major network, and family's subnet is controlled and managed.
The digital home network of the embodiment of the invention adopts with different levels network topology structure, can be divided into two network segments: family's major network and family's subnet.Wherein, family's major network is connected with external network by the home network primary gateway, and family's subnet closes with the family major network by the home network subnet and is connected.Equipment in family's major network can mutual communication, and by home network primary gateway visit external network.Equipment in family's subnet is by home network subnet pass, home network primary gateway and external network communication.Home network can be multimedia and data network on function, also can be Control Network, also can be other networks, can also be the mixture of two or more network.
Family's major network of the embodiment of the invention is used to connect home network interconnected gateway, control terminal and terminal equipment, and family's major network can be multimedia and data network in physics realization, also can be Control Network.When family's network internal only had a network, this network was a major network in logic.The home network primary gateway can be connected with external network, is that the equipment in family's subnet and the family's major network provides the interface of external network, and realizes function that family's major network is configured and manages.Family's major network is multiple mode such as wired or wireless on the networking form.
The major function of family's major network has: access to the Internet, intelligent management, household electronic amusement etc.Family's major network can be brought in constant renewal in according to user's needs, adds or deletes various functions.The home network primary gateway is one of equipment in the home network, has the function of home network server.Any equipment in the home network can both directly or by home network subnet pass be connected with the home network primary gateway, realizes Based Intelligent Control and information exchange.The home network primary gateway provides interface with external network for each equipment in the home network, make home network insert external network conveniently, at high speed, the home network primary gateway provides the function of external network telemanagement household internal network, internal network is also provided the function of home network server.The wireless family subnet gateway is counted as general device in home network, be again the gateway of wireless sub network simultaneously.Wireless major network gateway device is the interface that connects family's major network and wireless sub network.The wireless sub network of the embodiment of the invention comprises the wireless network that adopts the ZigBee technology and with the wireless network of Femto as the base station.
The physical layer of family's major network is to adopt power line as transmission medium, and the information peak-peak transfer rate of support is greater than 10Mbps.At media access control layer, (Carrier Sense Multiple Access/Collision Detect, mode CSMA/CD) also is not suitable for transmission on the power line in traditional csma/collision detection.The present invention adopts the method for main line type token-ring network to carry out medium access control, i.e. 802.4 agreements.Equipment in family's major network only obtains token and just has the right to send information to the home network primary gateway.This meets with the network condition of power line as transmission medium, because the interference meeting of power line is bigger, CSMA/CD mechanism all is absorbed in all devices the state of long wait probably.
The network layer of family's major network adopts TCP/IP, and the equipment in family's major network also must be supported TC/IP.Can be in transport layer to different services selection TCP or UDP.The TCP transmission is adopted in services such as HTTP, FTP, Telnet; Can adopt the UDP transmission to SLP, SNMP, LRP, CCP etc.The hierarchy of the communication protocol of whole family major network is as shown in table 1.
The communication protocol layered sheet of table 1 family major network
The terminal equipment and the control terminal that articulate on family's major network intercom mutually by TCP/IP, and are connected with extraneous wide area network.The Internet protocol of the equipment on the major network (Internet Protocol, IP) address is by DynamicHost agreement (Dynamic Host Configuration Protocol to be set, DHCP) online is shared by home network primary gateway (having legal IP) then in the privately owned address of Fen Peiing.
Engineering duty group (Internet Engineering Task Force, the IETF) Simple Network Management Protocol of appointment are adopted in the equipment control of family's major network.In concrete enforcement, (Simple Network Management Protocol v2 SNMPv2), can also adopt SNMPv3 can also to adopt its second generation Simple Network Management Protocol.SNMPv2 is simple relatively, but security mechanism is relatively more fragile, communication is not encrypted, and SNMPv3 has used data encryption standard (Data Encryption Standard, DES) algorithm for encryption communication data, in addition SNMP can also with MD5 and safe mapping algorithm (Secure Hash Algorithm, the SHA) identifier of checking node, thereby prevent that the assailant from pretending to be the identity operational network of management node.
The Service Management of family's major network is adopted by plug and play (Universal Plug and Play, UPNP) agreement.The UPNP agreement is a kind of distributed, open network architecture, realizes that the peer-to-peer network between each equipment connects, and each equipment can provide the service of oneself.It is supported zero setting, network connection procedure " invisible " and searches the device service that numerous suppliers provide automatically.UPNP provides communication function at steering needle and control appliance between the server and client side.Entire work process need be handled the content of six aspects, i.e. equipment addressing, discovering device, the description to equipment, Equipment Control, device events, equipment are expressed, as shown in Figure 2.
Family's major network and and each family's subnet between communication be gateway device (be home network subnet close) by each family's subnet.Its communications protocol is based on the application protocol of TCP.In addition, consider the safety problem of user when carrying out remote access, control appliance by internet etc., the remote equipment access control can only be undertaken by the home network primary gateway.Externally network is if will control equipment in the home network internal subnet, then must conduct interviews to the home network primary gateway earlier, the communication of closing then by home network primary gateway and home network subnet, by home network subnet pass terminal equipment is conducted interviews, controls, last return information.All must confirm to have only legal person just can further visit, otherwise refused visitor's identity in the home network primary gateway and the home network subnet Central Shanxi Plain.
The following describes the form of the packet that communicates in the digital home network in embodiments of the present invention, as shown in table 2.
Table 2 communication data packet format
This packet comprises frame head for information about and the frame data of representing data.Frame head can comprise the version number field of presentation protocol, and length is 2 bits; Reserved field, length are 2 bits; The type of data packet field of expression type of data packet, length is 4 bits; The data packet length field of expression data packet length, length is 2 bytes and major network number field, length is 2 bytes.Wherein the major network numbering can generate at random.Frame data are being followed in the frame head back, and length is the 0-512 byte.Can read the command request that the home network subnet closes by the home network primary gateway, close by the home network subnet and send this packet, also can close active and send by the home network subnet.
The communication process of the digital home network of the embodiment of the invention is described below.
The home network subnet closes by the DHCP agreement and obtains the IP address from the home network primary gateway.If need closing with the home network subnet, the home network primary gateway communicates by letter, with the terminal equipment in the control family subnet, and then need be in family's network subnet Central Shanxi Plain registration.Shut in case be registered to the home network subnet, the home network subnet only closes communicates by letter with the unique one family network primary gateway that is registered to itself, does not accept the communication request of other IP network equipment.Registration process is initiated by the home network primary gateway.The home network primary gateway sends the log-in command packet, comprising the IP address of home network primary gateway, and the major network numbering of 2 bytes that generate at random by the home network primary gateway.After the home network subnet closes and receives order, send to confirm to respond and then succeed in registration.After succeeding in registration, home network primary gateway numbering in all communication data packet then is the sign of home network subnet pass and home network primary gateway affirmation the other side identity, and the home network subnet closes only to be accepted to number correct packet request from home network primary gateway IP address and major network.Before home network primary gateway, home network subnet are closed, then before closing, initiate log off procedure by the side of closing.Confirm that if de-registration request obtains the other side then the numbering of the major network in this registering communication is invalid, before registration next time, the home network subnet closes the request of not accepting any home network primary gateway.Communication between home network primary gateway and home network subnet close mainly is the connection status of transmitting home automation control network, the state of each equipment etc.The home network primary gateway is closed the state parameter that reads the state parameter of each equipment or each equipment is set by setting, reading order from the home network subnet.The home network subnet closes by reporting order and provides the device description file of each equipment, the state parameter of each equipment, the contents such as device registry of each equipment connection status to the home network primary gateway, makes the home network primary gateway understand the state of whole family subnet.Because this communication protocol operates on the reliable TCP transmission basis, the reliability of its transmission is to be guaranteed, the success or the failure of operations such as the affirmation function of this agreement is used to describe registration, nullify, be provided with, read, rather than the correctness of transmission itself is described.(Secure Socket Layer, SSL) agreement is carried out the network security design to socket layer safe in utilization in the web service that the home network primary gateway externally provides.The transmission that SSL can be used to maintain secrecy guarantees that message transfer is safe between network and the Web server.
Family's subnet is an optional network segment in the home network, is the division that home network is carried out from logical level, divides including but not limited to Control Network and multimedia and data network etc. from function.Home network subnet pass is a kind of equipment in family's subnet, and it had both supported family's subnetwork communicating agreement, supported family's major network communication protocol again, also can be the equipment with becoming one of home network primary gateway in physics realization.Terminal equipment in it and the family's subnet is interconnected, realizes configuration and management to family's subnet, provides interface with family's major network for the various terminal equipments in family's subnet simultaneously.Family's subnet is supported multiple modes such as wired or wireless on the networking form.
The family wireless subnet can adopt multiple technologies.In checking meter etc. to the not high application of rate requirement, three tables can adopt Zigbee technology (being the IEEE802.15.4 agreement).Characteristics such as it has closely, low complex degree, self-organizing, low-power consumption, low data rate, low cost.The Zigbee network is only supported 2 kinds of physical equipments: full-function device (Full Function Device, FFD) and simplify function device (Reduced Function Device, RFD), wherein FFD can provide whole MAC services, can serve as any Zigbee node, not only can send and accept data, also have routing function, therefore can receive child node; And RFD only provides the MAC service of part, can only serve as terminal node.The Zigbee standard has defined three kinds of nodes on this basis: Zigbee focal point (Coordinator), routing node (Router) and terminal node (End Device).Defined three kinds of network topology forms in the Zigbee consensus standard, be respectively Star topology, tree topology and mesh topology, the present invention adopts the third topological structure of Zigbee, i.e. mesh topology.Adopt the self-organization network communication mode, each RFD connects by FFD, and is interconnected between FFD and the FFD, and telegon is responsible for the interconnected of Zigbee wireless network and other networks, such as family's major network etc.Set up a complete Zigbee mesh network and comprise two steps: netinit, node add network, and wherein node adds network and comprises two steps again: network and network by existing father node by being connected with telegon.
Then adopt the Femto technology to carry out networking at portable terminal, strengthen the viscosity of network the user.Fusion type Femto will move, fix, broadband services all merges, the user just can realize the communication requirement that they are all by a femto, and enjoy professional fusion in different access modules and roam, increase user's viscosity greatly, help operator to consolidate userbase and develop the domestic consumer, and reduce investment outlay.Femto inserts as its backhaul by means of fixed broadband, does not have the site to choose and build the input of safeguarding the aspect, reduces the investment of operator aspect networking greatly.In addition, femto disposes the traffic load that has also alleviated macrocellular network.Smooth evolution.Because femto adopts flat architecture, meet the trend such as the LTE/EPS of mobile network's evolution; Flat architecture has been owing to reduced the node number, also more meets in the complete IP network real time business to the strict demand of time delay.
And family wired subnet is the function expansion to family's major network, mainly is at equipment such as some household electrical appliance.Wired subnet can be classified according to business demand.Require the transmission of two-forty to set up subnet separately to multimedias such as Digital Television, and the equipment that requires for some low speed can make up the low speed subnet.
In embodiments of the present invention, adopt the layer-stepping Network Design, the network topology of making rational planning for can adapt to the network requirement of friction speed; And wireless mode combines with wired mode, can support the home network multiple business; Adopt power line can save cost, and can safeguard easily as transmission medium; Can improve the stability of digital home network.
As shown in Figure 3, the network architecture of layering fully takes into account the present situation of household's IT application network and to the demand of high speed information stream transmission such as multimedia like this.To information flows such as multimedia utilize high-speed transfer, family's major network of connecting into of power line cheaply.Simultaneously, also take into full account up till now interconnected, centralized control, remote access and demand for control, satisfy the characteristics of each electric appliances transmission bandwidth and use flexibility to equipment such as each traditional home appliance in the family, three tables, three anti-or even light controls, automatic curtains.
The one family network architecture that this patent is realized as shown in Figure 2.The external network that links to each other with home network is 3 type telecommunications networks, cable television network (Community Antenna Television, CATV), the Internet (Internet), public switch telephone network (Public Switched Telephone Network, PSTN).By the home network primary gateway outside diverse network is carried out aggregation processing.Household internal network using bus-type local area network (LAN) adopts the transmission medium of power line as family's major network.The bus local area network (LAN) comprises wired subnet, wireless sub network and Femto base station.The Femto base station mainly towards be mobile phone terminal, use as small base station; The low-speed wireless subnet master that the Zigbee base station makes up be towards as three tables telemetering and remote control system such as check meter; Wired subnet is to the further expanding of family's major network, and is fit to dissimilar household electrical appliance.
More than the digital home network that the embodiment of the invention provided is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a digital family network system is characterized in that, described digital family network system comprises: family's major network, family's subnet, home network primary gateway, home network subnet close; Described family subnet closes with described family major network by described home network subnet and is connected; Described family major network is connected with external network by described home network primary gateway; Described family major network is used for interconnected between described home network primary gateway, described home network subnet pass, terminal equipment and the control terminal.
2. digital family network system as claimed in claim 1 is characterized in that, the physical layer of described family major network adopts power line as transmission medium.
3. as the digital family network system of claim 1 or 2, it is characterized in that the agreement that the network layer of described family major network adopts comprises TCP/IP and UDP.
4. digital family network system as claimed in claim 3 is characterized in that described digital family network system adopts with different levels network topology structure.
5. digital family network system as claimed in claim 1 is characterized in that, described family subnet includes spider lines and/or wireless network.
6. digital family network system as claimed in claim 5 is characterized in that, described wireless network adopts the Zigbee agreement.
7. digital family network system as claimed in claim 1 is characterized in that,
Described terminal equipment closes with described family major network by described home network subnet and links to each other, and/or,
Described terminal equipment closes with described home network subnet by described family major network with described control terminal and links to each other.
8. digital family network system as claimed in claim 1 is characterized in that, described home network primary gateway also is used for family's major network is configured and manages.
9. digital home network as claimed in claim 8 is characterized in that, UPnP UPNP agreement is adopted in the Service Management of described family major network.
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| CN110635979B (en) * | 2019-10-21 | 2022-02-01 | 杭州鸿雁智能科技有限公司 | Method for interconnecting communication devices in local area network |
| CN110601940B (en) * | 2019-10-21 | 2022-02-01 | 杭州鸿雁智能科技有限公司 | Method for interconnecting communication devices in local area network |
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