CN102238238A - Method and device for accessing local network equipment - Google Patents
Method and device for accessing local network equipment Download PDFInfo
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- CN102238238A CN102238238A CN2010101542042A CN201010154204A CN102238238A CN 102238238 A CN102238238 A CN 102238238A CN 2010101542042 A CN2010101542042 A CN 2010101542042A CN 201010154204 A CN201010154204 A CN 201010154204A CN 102238238 A CN102238238 A CN 102238238A
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Abstract
The embodiment of the invention discloses a method and a device for accessing local network equipment, relating to the communication field. The embodiment of the invention aims to solve the problem about complex operation caused by the fact that the device only can be accessed after the IP address of the local network equipment is input in the prior art. The technical scheme provided by the invention is as follows: Femtocell receives an analysis request transmitted by a user terminal and including a domain name which is the domain name of the local network device to be accessed by the user terminal, and queries the IP address corresponding to the domain name in a pre-built address mapping table, wherein the IP address belongs to the local network equipment; and the Femtocell transmits the queried IP address to the user terminal and informs the user terminal of accessing the local network equipment according to the IP address of the local network equipment. The technical scheme provided by the invention can be used in the technical fields that mobile terminals access digital household devices DHD in the local network.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method and apparatus of visiting local network device.
Background technology
Femtocell (flying honeycomb) technology is the solution of the indoor covering of a kind of expanding mobile communication.In the overall network framework of Femtocell, traditional data service need be passed through local network, IP network, mobile core network successively, finally arrives the purpose IP network.
GI interface (GPRS interface) is the interface between GPRS and the external data network, and the encapsulation of variety of protocol, decapsulation, address transition operations such as (are publicly-owned net IP address as privately owned net IP address transition) can be carried out on the GI interface.
In Femtocell behind the integrated GI interface, just can make the directly miscellaneous equipment in the same local network of visit of portable terminal, and the IP broadband networks and the mobile core network of approach outside again.Shown in Figure 1 is subscriber equipment (User Equipment, UE) visit digital family equipment (Digital Home Device, schematic diagram DHD).
In realizing process of the present invention, the inventor finds, when the user uses UE visit DHD, must import the device address of this DHD, for example, and http: // 192.168.1.100.The IP address of this digital form need just can obtain after inquiring about, and this IP address sometimes may change, and very difficult quilt is remembered, and has so just increased the complexity of user's operation.
Summary of the invention
Embodiments of the invention provide a kind of method and apparatus of visiting local network device, can simplify user's input operation.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of method of visiting local network device is applied to comprise among the Femtocell:
Femtocell receives the analysis request that comprises domain name that user terminal sends, and domain name is the domain name of the local network device that will visit of described user terminal;
The IP address of Femtocell inquiry domain name correspondence from the address mapping table of setting up in advance, described IP address is the IP address of described local network device;
Femtocell sends to described user terminal with the IP address of the described local network device that inquires, and notifies described user terminal according to the IP address of described local network device described local network device to be conducted interviews.
A kind of device of visiting local network device is applied to comprise among the Femtocell:
First receiving element is used to receive the analysis request that comprises domain name that user terminal sends, and domain name is the domain name of the local network device that will visit of described user terminal;
Query unit is used for the IP address of the domain name correspondence that received by described first receiving element from the address mapping table inquiry of setting up in advance, and described IP address is the IP address of described local network device;
First transmitting element is used for the IP address of the described local network device that inquires is sent to described user terminal, notifies described user terminal according to the IP address of described local network device described local network device to be conducted interviews.
The method and apparatus of the visit local network device that the embodiment of the invention provides by the address mapping table that sets in advance, can be converted to the domain name of equipment corresponding IP address, makes the domain name mapping that just can realize being simple and easy to usefulness in local network.When certain equipment in the user capture local network, only need the domain name of this equipment of input, rather than the IP address of complicated difficult note, it is easier to make the user import.The method and apparatus of the visit local network device that embodiments of the invention provide can be simplified user's input operation.
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 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 the local network structure of the embodiment of the invention;
The method flow diagram of the visit local network device that Fig. 2 provides for the embodiment of the invention;
The method flow diagram of the visit local network device that Fig. 3 provides for another embodiment of the present invention;
The apparatus structure schematic diagram one of the visit local network device that Fig. 4 provides for the embodiment of the invention;
The apparatus structure schematic diagram two of the visit local network device that Fig. 5 provides for the embodiment of the invention;
The apparatus structure schematic diagram three of the visit local network device that Fig. 6 provides for the embodiment of the invention;
The apparatus structure schematic diagram four of the visit local network device that Fig. 7 provides for the embodiment of the invention;
Fig. 8 is the communication process that UE uses domain name access DHD in the embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment 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 paying the every other embodiment that is obtained under the creative work prerequisite.
Could visit this equipment in order to solve in the prior art owing to must import the IP address of local network device, thereby the problem of the complicated operation that causes, the embodiment of the invention provides a kind of method and apparatus of visiting local network device, and the following stated embodiment all is applied among the Femtocell.
As shown in Figure 2, the method for the visit local network device that the embodiment of the invention provides comprises:
In embodiments of the present invention, when user terminal wants to visit digital family equipment (Digital Home Device in the same local network, DHD) time, can import the domain name of DHD, this domain name has reflected the title of DHD or the business that is had intuitively, makes the user not need to import the IP address of the digital form that is difficult to remember.And receive by Femtocell and to comprise the analysis request of this domain name, so that find the IP address of this domain name correspondence.
In embodiments of the present invention, described address mapping table is set up in advance by Femtocell, has reflected the IP address of each equipment in the local network and the corresponding relation of this equipment domain name.When Femtocell receives analysis request, can in described address mapping table, inquire about, and the IP address that inquires is returned to user terminal.
In embodiments of the present invention, the IP address that user terminal returns Femtocell is as purpose IP address, and the access request that will comprise user terminal its own IP address and above-mentioned purpose IP address sends to Femtocell, sends in the local network after by Femtocell the IP address of user terminal being changed.Equipment with purpose IP address returns response message after receiving this visit request, finishes communication process one time, with the purpose that realizes that user terminal conducts interviews to local network device.
The method of the visit local network device that the embodiment of the invention provides by the address mapping table that sets in advance, can be converted to the domain name of equipment corresponding IP address, makes the domain name mapping that just can realize being simple and easy to usefulness in local network.When certain equipment in the user capture local network, only need the domain name of this equipment of input, rather than the IP address of complicated difficult note, it is easier to make the user import.The method of the visit local network device that embodiments of the invention provide can be simplified user's input operation.
In order to make those skilled in the art can more be expressly understood the technical scheme that the embodiment of the invention provides, below by specific embodiment, the method for the visit local network device that another embodiment of the present invention is provided is elaborated.
As shown in Figure 3, the method for the visit local network device that another embodiment of the present invention provides comprises:
Step 201, (User Equipment UE) sends the analysis request that comprises domain name to subscriber equipment;
In embodiments of the present invention, UE sends the analysis request that comprises domain name to Femtocell.Femtocell is equivalent to the little base station of 3G of a domestic type, and it is linked into mobile core network by broadband internet, for home environment provides 3G mobile communication service.In Femtocell, after the integrated GI interface function, make UE can directly visit the DHD equipment in the local network, and without approach broadband internet and mobile core network.Described DHD equipment is meant that mainly (Universal Plug and Play, UPnP) media services equipment can be realized the convenient broadcast of medium to UPnP.Described media services equipment is a kind of equipment form of UPnP norm-setting, can realize AV conversion, video recording scheduling, connection management and present business function such as directory content.Because the IP address of DHD equipment is difficult to memory, and, a lot of users even do not know IP address how to inquire about described equipment, therefore, in the present embodiment, each the DHD equipment in the local network is all preestablished a simple and direct domain name, for example, DHD-MEDIA when the user will visit certain equipment, only needs the domain name of this equipment of input to get final product.For example, the user is during with certain DHD in the mobile phone access local network, only need import http://DHD-MEDIA in mobile phone, mobile phone can send a domain name mapping request that comprises DHD-MEDIA to Femtocell, and request is corresponding IP address with this domain name mapping.Need to prove that domain name can be the implementor name of DHD itself, also can be a certain professional name that this DHD has, and makes the user feel simple, intuitive as long as be named rule.
Step 202, Femtocell receives the analysis request that comprises domain name that user terminal sends, and domain name is the domain name of the local network device that will visit of described user terminal;
In embodiments of the present invention, Femtocell goes up at the port (normally UDP 53) of appointment and monitors the analysis request that is sent by user terminal in the step 201.
Step 203, the IP address of Femtocell inquiry domain name correspondence from the address mapping table of setting up in advance, described IP address is the IP address of described local network device;
In embodiments of the present invention, described address mapping table is set up in advance by Femtocell, has reflected the IP address of each equipment in the local network and the corresponding relation of this equipment domain name.Femtocell can set up this address mapping table by the mode of active inquiry, also can set up this address mapping table by the professional reporting message that receives each equipment in the local network, below these two kinds of methods is specifically described:
Method one, Femtocell sends the service inquiry request with the form of ip multicast in local network, inquire about which DHD and have certain business that Femtocell requires, DHD with this business function replys response message with the form of IP unicast to Femtocell, the IP address of this DHD and the domain name that this DHD is set up have in advance been comprised in this response message, promptly by this response message, Femtocell can be known IP address and the domain name of the DHD with described business, and sets up corresponding relation with between the two.After Femtocell had inquired about all business functions, these corresponding relations had just constituted an address mapping table.
Which business function method two because the DHD in the local network can regularly send professional reporting message with the form of ip multicast in network, self has to report.So Femtocell can initiatively monitor these professional reporting messages, so that obtain IP address and the domain name of the DHD that is comprised in the described professional reporting message, thereby set up the corresponding relation between them, promptly set up an address mapping table.The type of described professional reporting message is DLNA (Digital Living Network Alliance, DLNA) agreement, the DLNA agreement is a kind of standard agreement that generally uses in the present home network, the DLNA bottom is realized based on UPnP, therefore based on this agreement, the embodiment of the invention is applied even more extensively.
When Femtocell receives analysis request, can in described address mapping table, search the pairing IP of the domain name that comprises in analysis request address, can return to UE at once after finding.If can not find the IP address of this domain name correspondence in described address mapping table, Femtocell can be transmitted to this analysis request the dns server in the mobile core network, finishes the parsing task by this dns server.The IP address packet of described dns server is contained in the described analysis request, is to finish in the flow process that online prepares by mobile core network to its distribution at UE, distributes to this UE its own IP address that also has of UE simultaneously.Femtocell follows the forwarding rule of GI interface among the Femtocell when transmitting described analysis request, promptly a kind of routing policy, and this forwarding rule has been determined for some objective networks, is to adopt the GI interface to transmit or transmit by mobile core network.Obtain the IP address of domain name correspondence when dns server after, this IP address is returned to Femtocell, by Femtocell this IP address is sent to UE again.
Need to prove that a DHD can register multinomial business, the multinomial different business of same DHD can be to should the unique IP address of equipment.For example, the domain name of certain DHD is DHD-MEDIA, and it has three professional A, B, C, their corresponding same IP address 192.168.1.100, when the user imported http://DHD-MEDIA/B, Femtocell can resolve to http with it: // 192.168.1.100/B returns to user UE again.
Above-mentioned two kinds of methods of setting up address mapping table can be applied to the different periods respectively, for example, when Femtocell just starts shooting, can set up address mapping table with the mode of active inquiry, can upgrade this address mapping table in real time by monitoring the professional reporting message in the network later on.
Step 204, Femtocell sends to described user terminal with the IP address of the described local network device that inquires;
In the present embodiment, Femtocell will send to UE by the IP address 192.168.1.100 that the mode of searching parses.
Step 205, Femtocell receives the access request that described user terminal sends, and comprises the IP address of described user terminal and the IP address of described local network device in the described access request;
In embodiments of the present invention, UE visit DHD equipment conducts interviews by Femtocell, be that UE need send to Femtocell earlier with access request message, (Network Address Translation transmits after NAT) again to finish network address translation by Femtocell.Comprise this UE its own IP address (source IP address in the described access request, represent with Sip=UEIP), the IP protocol type of source port number (Sport), destination slogan (Dport) and the described message of the IP address (purpose IP address is represented with Dip=DHDIP) of the DHD that will visit, request message message.
Step 206, Femtocell becomes the IP address transition of described user terminal the IP address of Femtocell;
In embodiments of the present invention, after Femtocell receives described access request, replace the source IP address of this access request message with its own IP address, and the source port number (source port number of TCP or udp protocol) to described message uses a port natport in the Femtocell port pool to replace, as shown in Figure 8.Meanwhile, Femtocell also needs to set up a forwarding-table item according to above-mentioned parameter, is about to described parameter information, described replacement information is all noted, so that follow-up evidence-based when carrying out network address inverse transformation.
Step 207, Femtocell finds described local network device according to the IP address of described local network device, sends visit information to realize described user terminal to described local network device;
Step 208, described local network device finds Femtocell according to the IP address of described Femtocell, Femtocell finds described user terminal according to the IP address of described user terminal, to realize that described local network device is to described user terminal echo reply message.
In embodiments of the present invention, the access request that Femtocell will carry out after the network address translation sends to purpose DHD according to purpose IP address, and this DHD responds described access request, and response message is returned to Femtocell.Purpose IP address in this response message is the IP address of Femtocell, and source IP address is the IP address of DHD, and source port number is Dport, and the destination slogan is natport.Femtocell carries out the inverse transformation of the network address to the message of this response message, promptly by the forwarding-table item in the query steps 206, source IP address, source port number in the use forwarding-table item replaced purpose IP address, the destination slogan in the response message message, at last the response message that will be carried out after the network address translation by Femtocell sends to UE, as shown in Figure 8.Repeating step 205 is to the process of step 207, can finish repeatedly communicating by letter of UE and DHD.
The method of the visit local network device that the embodiment of the invention provides by the address mapping table that sets in advance, can be converted to the domain name of equipment corresponding IP address, makes the domain name mapping that just can realize being simple and easy to usefulness in local network.When certain equipment in the user capture local network, only need the domain name of this equipment of input, rather than the IP address of complicated difficult note, it is easier to make the user import.The method of the visit local network device that embodiments of the invention provide can be simplified user's input operation.
As shown in Figure 4, the embodiment of the invention also provides a kind of device of visiting local network device, comprising:
The first receiving element 30l is used to receive the analysis request that comprises domain name that user terminal sends, and domain name is the domain name of the local network device that will visit of described user terminal;
First transmitting element 303, the IP address that is used for the local network device that will be obtained by described query unit 302 sends to described user terminal, notifies described user terminal according to the IP address of described local network device described local network device to be conducted interviews.
Further, as shown in Figure 5, described device also comprises:
Second transmitting element 304 is used for sending the service inquiry request to local network;
Second receiving element 305 is used for receiving the response message that local network has the equipment of described business, comprises the IP address of described equipment and the domain name of described equipment in the described response message;
First sets up unit 306, is used for setting up described address mapping table according to the response message that is received by described second receiving element 305.
More than three unit are Femtocell finishes address mapping table by the mode of active inquiry the processes of setting up.
Perhaps, as shown in Figure 6, described device also comprises:
The 3rd receiving element 307 is used for receiving the professional reporting message that each equipment of local network regularly sends, and comprises the IP address of described equipment and the domain name of described equipment in the described professional reporting message;
Second sets up unit 308, is used for setting up described address mapping table according to the professional reporting message that is received by described the 3rd receiving element 307.
More than two unit are Femtocell finishes address mapping table by the mode that receives professional reporting message the processes of setting up.
Further, as shown in Figure 7, described device also comprises:
The 4th receiving element 309 is used to receive the access request that described user terminal sends, and comprises the IP address of described user terminal and the IP address of described local network device in the described access request;
Converting unit 310, the IP address transition that is used for the user terminal that will be received by described the 4th receiving element 309 is the IP address of Femtocell;
The specific implementation of the above device can repeat no more referring to the described method part of step 201～step 208 herein.
The device of the visit local network device that the embodiment of the invention provides by the address mapping table that sets in advance, can be converted to the domain name of equipment corresponding IP address, makes the domain name mapping that just can realize being simple and easy to usefulness in local network.When certain equipment in the user capture local network, only need the domain name of this equipment of input, rather than the IP address of complicated difficult note, it is easier to make the user import.The device of the visit local network device that embodiments of the invention provide can be simplified user's input operation.
Technical scheme provided by the invention can be applied in the technical field that portable terminal conducts interviews to the digital family equipment DHD in the local network.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in the computer-readable recording medium, as ROM/RAM, magnetic disc or CD etc.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (9)
1. a method of visiting local network device is applied to it is characterized in that among the Femtocell, comprising:
Femtocell receives the analysis request that comprises domain name that user terminal sends, and domain name is the domain name of the local network device that will visit of described user terminal;
The IP address of Femtocell inquiry domain name correspondence from the address mapping table of setting up in advance, described IP address is the IP address of described local network device;
Femtocell sends to described user terminal with the IP address of the described local network device that inquires, and notifies described user terminal according to the IP address of described local network device described local network device to be conducted interviews.
2. the method for visit local network device according to claim 1 is characterized in that, the step of the foundation of described address mapping table comprises:
Femtocell sends the service inquiry request to local network;
Femtocell receives the response message that has the equipment of described business in the local network, comprises the IP address of described equipment and the domain name of described equipment in the described response message;
Femtocell sets up described address mapping table according to described response message.
3. the method for visit local network device according to claim 1 is characterized in that, the step of the foundation of described address mapping table comprises:
Femtocell receives the professional reporting message that each equipment regularly sends in the local network, comprises the IP address of described equipment and the domain name of described equipment in the described professional reporting message;
Femtocell sets up described address mapping table according to described professional reporting message.
4. according to the method for claim 2 or 3 described visit local network devices, it is characterized in that the protocol type of described professional reporting message is a DLNA DLNA agreement.
5. the method for visit local network device according to claim 1 is characterized in that, also comprises:
Femtocell receives the access request that described user terminal sends, and comprises the IP address of described user terminal and the IP address of described local network device in the described access request;
Femtocell becomes the IP address transition of described user terminal the IP address of Femtocell;
Femtocell finds described local network device according to the IP address of described local network device, sends visit information to realize described user terminal to described local network device;
Described local network device finds Femtocell according to the IP address of described Femtocell, and Femtocell finds described user terminal according to the IP address of described user terminal, to realize that described local network device is to described user terminal echo reply message.
6. a device of visiting local network device is applied to it is characterized in that among the Femtocell, comprising:
First receiving element is used to receive the analysis request that comprises domain name that user terminal sends, and domain name is the domain name of the local network device that will visit of described user terminal;
Query unit is used for the IP address of the domain name correspondence that received by described first receiving element from the address mapping table inquiry of setting up in advance, and described IP address is the IP address of described local network device;
First transmitting element, the IP address that is used for the local network device that will be obtained by described query unit sends to described user terminal, notifies described user terminal according to the IP address of described local network device described local network device to be conducted interviews.
7. the device of visit local network device according to claim 6 is characterized in that, described device also comprises:
Second transmitting element is used for sending the service inquiry request to local network;
Second receiving element is used for receiving the response message that local network has the equipment of described business, comprises the IP address of described equipment and the domain name of described equipment in the described response message;
First sets up the unit, is used for setting up described address mapping table according to the response message that is received by described second receiving element.
8. the device of visit local network device according to claim 6 is characterized in that, described device also comprises:
The 3rd receiving element is used for receiving the professional reporting message that each equipment of local network regularly sends, and comprises the IP address of described equipment and the domain name of described equipment in the described professional reporting message;
Second sets up the unit, is used for setting up described address mapping table according to the professional reporting message that is received by described the 3rd receiving element.
9. the device of visit local network device according to claim 6 is characterized in that, described device also comprises:
The 4th receiving element is used to receive the access request that described user terminal sends, and comprises the IP address of described user terminal and the IP address of described local network device in the described access request;
Converting unit, the IP address transition that is used for the user terminal that will be received by described the 4th receiving element is the IP address of Femtocell;
First searches the unit, is used for finding described local network device according to the IP address of the local network device that is received by described the 4th receiving element, sends visit information to realize described user terminal to described local network device;
Second searches the unit, be used for after described local network device finds Femtocell according to the IP address of described Femtocell, described user terminal is found in IP address according to the user terminal that is received by described the 4th receiving element, to realize that described local network device is to described user terminal echo reply message.
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| CN112752300A (en) * | 2020-12-29 | 2021-05-04 | 锐捷网络股份有限公司 | Method and device for realizing local distribution |
| CN112752300B (en) * | 2020-12-29 | 2022-09-20 | 锐捷网络股份有限公司 | Method and device for realizing local distribution |
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Application publication date: 20111109 |