TWI271060B - System and method for providing a communication channel - Google Patents

Abstract

Communication devices and methods are proposed for providing communication channel. In one example, devices and methods are capable of reaching one or more terminals that are not in a public network. In addition, depending on the network or the networks that the terminals are located, some examples may be capable of establishing a less indirect or a direct communication channel between two terminals after they communicate through an intermediate system. In another example, a triggering packet may be sent to provide a binding at an interface of a private network, such as an NAT, thereby reducing or eliminating communication through a relay server.

Description

1271060 IX. OBJECT DESCRIPTION OF THE INVENTION · TECHNICAL FIELD OF THE INVENTION The invention relates to a network transmission apparatus and method, in particular to a network transmission device between two terminal devices for shaking #ifSSi] Road (Intemet) or regional network (LAN), women's g exhibition 'to make it easier to pay for the Bellows' so that the exchange of instant audio and video] Tian Qiaoqiao's * need to exchange data in the application, the network

Kind, Because of its low cost, the VoIP phone does not need to transmit voice data through the poor network or the Internet. [04] The father of the two terminals exchanges data, including instant data. The location of the mountain is then transmitted directly or indirectly via the third mutual. Due to security issues, some terminals can not use the Internet Protocol (IP) i address to determine the location. (ip) address to identify the network protocol of this terminal. In the case of a network address converter ▲; fire two (m has been expected, the present invention proposes a class of equipment for the improvement of the class of the channel and the method of the establishment of the transfer between the eve [Summary of the Invention] Ingeniously, and through the intermediate system to establish the first transmission, the initial between the number, especially the first terminal is located in the private 4 road, the second end 6 1271060 j second, the social 5 ί - set the first transmission The junction establishes the second transmission channel ° without msshs [06] another object of the present invention is to the <^丄/' transmission system. This system includes _!^13:= to provide a relayed address for network transmission. The program is connected to the stack and the n-hold and the first-terminal transfer to the first terminal and the transmission channel 'the-terminal to the J-way, to establish the transmission-terminal is private Between the end machines. In particular, when the ^ packet is sealed to the second terminal, "mm tends from the first: the terminal transmits this link to build the 4th ii: the terminal information about this link; and the month f road through The transmission method is used to establish a packet, if the first terminal is located at the address requesting address converter from the first terminal The source, the bit, the '罔, the inner', the address request packet is managed by the network to maintain the first pass, and the first communication port is provided. The service program will provide the relay system to the terminal. Transmitting data. The address of the service program is called the first pass to the scale. The terminal is the relay address. This relay is the feature of Modes: One example of a network transmission device and method of the embodiment is to cooperate with one of the embodiments of the figure and the method of the method, which can assist one or the other on the Hungarian, f-transmission, and non-communication. And maintain the network address translation port. ', σ阜' is used to let the intermediate system contact the terminal J271060 after the network address converter. In addition, according to the network or network, after transmission through the intermediate system, Road '- Some embodiments=Road address converter' can drop the link' [2 some of the specific embodiments described below are combined | U3J. :, start the agreement, which initiates the meeting to raise the road of the month] 3 establish a ί loss agreement in the network, for the 3 conferences, its package Multimedia conferences. Recently or the ' ' ' conference start-up agreement has become the most popular signal coordination ^ 曰 夕 夕 media relay, the two terminals ί two to tt = the first real ^ J jt * ΐ 222 - § 1? ) SIpl ^ 5Sii:; ^ 立 忿 (4)): Γ ;; kind = address converter in the transmission: i is such as 』 』 ί 器 斤 或 或 或 or other messages will be converted by the network address or The age of the guest is based on the Wenwang factor and may limit a certain transmission and transmission material in the public network; ^^/x may be converted through the network address converter Gat address crying, Νίτσ'ά7, the data transmitted by the phone Y It is also possible that the bit of the transmission request is sent by the network bit: %'^i5fu because the phone is transmitted from the second 2?=, but the link does not allow the transmission of the 1271060 from the S converter. The address _ gift _ has become the popular _ item, the server, is the network 3, TURN server, network information. The third terminal, such as the touch and the second terminal, receives the transmission request from the public network or the & server, can be from the system of the square &,, 4 ^ ^ month, the first Besch For example, a trigger address link (TAB) sfp ΐί^ΐ^ into the A block 2, such as through the network 22, such as the Internet, can be 彳 $' for the transmission of t = TCP, yell / ancestor 0 block 20a connected SIP stack 20b and ίαΙ f this block 2〇c, and both are also connected to the application block 2〇d. ”

The two intermediate systems, such as the TAB server 24, are directly connected to the terminal 20 via a private network interface such as NAT 26. If the NAT 26 network connection 22 contains portions of the Internet and private networks. In the second embodiment of the present invention, the TAB server 24 includes TCP, UDP/IP/m\c side 1 24a, and a TAB service program (or engine) 24b. The following is an example of the operation to establish a transmission channel between two terminals. [2^1『ί 3图" is a signal flow-example of the system of the second embodiment of the present invention during registration. As shown in FIG. 3, the system includes a first terminal 3, a 32, an intermediate system such as a TAB server 34, and a SIP registration authority or proxy server 36. In the second embodiment of the invention, the first terminal set 30 is a SIP terminal A or a network telephone that conforms to SIP regulations, such as the SIP phone A shown in Fig. 3. The above-mentioned first|Winter 9 1271060 end machine 30 can use the terminal machine shown in "2nd picture" 2 〇 中立上成全邱的执# 2 another λ 2 delete "2nd picture" - the second device [27 ] As shown in Figure 3, the first terminal can be accessed via the t-shirt or TAB. The request of the TAB can be made by the lake function block 20c of the "function function" of the first terminal 3(), as shown in Fig. 2. For example, before the first to the machine 30 generates the Sff registration signal, the first terminal 3〇^DP (User Data Encapsulation Agreement) to generate a TAB request. [Si κί; communication 埠. Because the first network in the private network is the total network information, so when the public When the public machine 30 establishes the transmission channel, the TAB cries ^ = - The terminal sets up the transmission channel. The communication on the secret port can help the ϊ] 34ΐ. The TAB request system from the private network terminal TAB _ "Use layer %^ to request the packet and application layer _ 丝 彳 i At f ^ mm (4) header address, TAB buffer 34 informs the request ^ = bit = county public network bit ^ TAB 34 30 provided Relay address. SIP^^3==Registration by TAB Feeder 34 2 Terminal 'Terminal (4) Registration Machine [31] In the embodiment of the present invention, the _ π feeding device 34 needs to be 4 on the dimension; ί = = 10 1271060 TAB server 34 can communicate with the first terminal periodically through NAT communication 封 封 ^ ^ [AB server 34 is to prevent NAT32 in the transmission of data if ^ ^ 吏 ^ 埠 埠The standby state assumes an example of transmitting a hold-ahead packet. L News. Such as "Figure 4" a CrLf symbol can be. The content of the Dingting standby packet may include [32] "Dia 4" as an example of the signal flow chart of the second embodiment of the present invention. The system includes the G system during the transfer process, the service device 34, the SIP statement system or the agent 34 device = 2, the TAB server - the terminal 38 contains the sip-compliant Lei Qiaodi terminal 38 . (10) Phone b shown in f). When the second phone, such as "4th as the ® request. In the SIP conference, you can send the transmission request material, image, or any of its "if" to start [33^Shikou "4", from the second end | θ j 4 The SIP request in the "Sin" through the SIp booklet ff 38, such as "the first terminal related to the note" or the phone device 36 to confirm the book agency or proxy server 36 according to the first浐f ^ address. For example, the relay address on the SIP injector 34 will transmit the TAB servo 30 that is not registered by the shark H. Therefore, the transmission request can be transferred to the response message of the first terminal 3 of the k1, and this will also be The first terminal machine 36 is monitored. Another - aspect feeding service = service. Also 'back from the private network. The heart has a constant pass == 3 «ίΞ ~33? ^ The third embodiment is at the first terminal 3. After the request is made by the first month of the month and the Sff registration authority or the proxy server 36, the SIP conference is started. For the ancients, the final machine: 38 = 381 \ ^ channel can be through the TAB ^ service brother and the second terminal [35] k there are many in the transfer between the two terminals to establish TAB server 34 media Following the address or the specified party ==: Provides an exchange message. Fig. 5 is a diagram showing an example of a signal flow chart of the configuration 11 1171060, address (MRA) of the fourth embodiment of the present invention. As shown in Fig. 5, the first terminal 3 transmits a VtRA request to the TAB server 34 to request the configuration of the MRA. If the mra request is from a private network or NAT 32, the TAB server 34 configures one of the communication ports on the TAB server 34 (used as a media relay) and communicates the network address of the TAB server 34 with this communication. Nickname is MRA. The TAB server 34 informs the first terminal set 30 about the configuration of the MRA via the NAT 32. The second terminal 38 is also informed of the information of the MRA based on the previously established first transmission channel. Similarly, the TAB feeder 34 periodically transmits a hold packet to the first terminal 3 to maintain the communication and address connection on the NAT 32 caused by the request. In the fourth embodiment of the present invention, the 'MRA §fl" is provided to the _2 terminal 38 by the response from the first terminal 3, and the response includes the MRA message of the SWR response signal. [36] The younger one can tell the specific mra to recognize the second terminal 38 by transmitting the SIP/SDP signal. For example, the SIP/SDP signal contains: ν=0 ' o-jack 2691444900 2487311000 IN IP4 host.TAB.com s=test c=INIP4 140.116.72.98 m^audio 32354 RTP/AVP 〇t=0 0 a^local add [ 37] According to the above signal, the last-behavior-specific area of the 苴 ::, to the designated position. The area address of the terminal 30. From the specific area of the t1 case, the first end is located in the Chuanjiu area. Therefore, the two desires ▼ 2 ~ 6 hang a cold machine P8] in the transmission can confirm whether the other party is in the exchange of the sip signal between the mutual signal, if two;; NAT). When the SIP establishes two terminals in the direct transmission channel ^ U, J, the selective or additional two is used, and one of the t is located in the private network to establish a more direct transmission. 12 1271060

ί 3: After the 156⁄4 machine f f Ϊ exchanges the signal, the trigger packet is used to make the NAT

Si lion t as shown in the picture "if the use of five ϊ ϊ 触发 触发 触发 i i i U U U U U U U U U U U U U U U U U U U U U U

: ϊ^ί ϊΪί 3S : When passing through the butterfly 38 〇 44 ° 4 ' ^ 涊 涊 一 一 一 一 一 一 终端 一 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 终端 5 5 5 5 5 5 5 5 5 After 3J,;: two people in the network. The location is transmitted to the location address of the second terminal device 38, and the location of the area is 30, which can be used in the private network of the terminal. ί should be the two final MRA, 贞ίίΐίΐ. . After the establishment of the thief, the relative (10) is not used to limit the scope of the patent. For the first time, the system of the second embodiment of the present invention is during the initial signal parenting period. The second embodiment of the second embodiment of the present invention is registered by the booklet or the generation 13 « 2 1271060. An example of a signal flow chart of the present invention; - Figure 4 is another example of a flow chart of the system of the third embodiment of the present invention during the initial tiger father change; and FIG. 5 is a fourth embodiment of the present invention. Example of a signal flow diagram for configuring a multi-media relay address; FIG. 6 is an example of a signal flow diagram using a trigger packet according to a fifth embodiment of the present invention; and FIG. 7 is a connection check of a sixth embodiment of the present invention An example of a signal flow diagram for a process. mouth

[Main component symbol description] :0 Terminal Oa TCP, udp/ip/mac block 20b 20c 20d 22 SIP stack TAB function block Application block Network 24 24a 24b 26

TAB server TCP, UDP/IP/MAC block TAB service processor/engine NAT

30 First terminal machine 32 NAT

I

34 36 38 MR^ NAT SIP SRA TAB TAB Server SIP registrar or proxy server Second terminal Multimedia relay address Network address converter Conference initiation protocol Conference initiation protocol relay address Trigger address link 14

Claims (1)

W1060 t, the scope of patent application: i • A network transmission system, including: a common network bud; the first terminal in the road, the private network is connected - public, two terminals, connected to the public network The circuit provides a connection to the public network, and the intermediate system is set up to interface with the first terminal to trigger the interface on the first terminal to trigger the private network. Setting the setting of the first terminal device to generate the second terminal, the first terminal device and the second & terminal device; and the second transmission channel, instead of establishing the $ through the money knot Both the machine and the second terminal are located - the first-final setting, the terminal and the second terminal are: 5 road dummy transmission 5 at the first terminal and the first application patent The network transmission system of item 1, wherein the bean comprises a trigger address connection server. , 糸1糸朱4. ^Please refer to the network transmission described in item i of the ii range, which includes a server with a service program set to & second, terminal, and to maintain the The g-pass of the private network; the terminal transmits. w丨面1逋汛埠 and 5H please ^ Fan Wei's network transmission system described in item 1, #中中轮轮公^二二-transmission channel and the third transmission channel are set to At the same time, it provides at least one voice transmission to the first terminal and the network ageing system described in the first item, wherein the interface includes one Network address translator. Order, 罔路15 1271060 The wheel train is used to provide a link address, including ········································································· a first terminal, and a network transmission system that maintains the private terminal with the second terminal in a private network, wherein the first terminal is 9. If the device is connected to the network transmission system. Also set to pick up 5:; test, system, where the service program; terminal - 11. A network transmission party establishes the first transmission channel. - second, the machine room is provided with a package; the channel is connected to the second terminal, and the second terminal is formed with a first transmission channel at the first terminal and when the first terminal is located In a private network, the configuration is moved to one of the interfaces of the private network: f. The first transmission channel informs the second line terminal of the connection that the second terminal is formed - the second transmission channel is The first terminal and the terminal described in the above-mentioned patent application scope, the method includes transmitting a setting from the first terminal J(2)(2) packet to trigger the configuration of the link. a tactile packet, the contact 13. the communication through the private network; f for the configured relay address to the intermediate system - the second communication maintains the first pass scale The intermediate pure_first terminal is transmitted at 16 1271060. 14··^ Applying for the network transmission method described in Item 11 of the patent scope, both the teller machine and the second terminal machine are located in one or more private transmissions from one of the first terminal machines for connection check Sealing machine to confirm that the first terminal machine and the second terminal machine and the private network of the terminal; and the white terminal belong to one if the first terminal machine and the second terminal machine are both connected to establish one The third transmission channel is in the first terminal and the network transmission method described in claim 11 of the patent application, wherein the terminal device and the second terminal device are both located in a first transmission Itt? / hemp establishment - direct transmission channel in the first terminal and i 16 · as claimed in the scope of the patent scope of the 11th network of the five-pass transmission channel system set up - conference start ▲, association ^ is provided to the evening voice transmission between the two terminals. 17 = The network transmission method of claim 11, wherein the interface of the private network comprises a network address translator. 18. A network transmission method for providing a transmission channel, comprising: receiving an address request from an address of a first terminal to an intermediate system, the bit setting is configured to request a message through a first communication port The relay address; - (4) the address request is obtained through the network address converter, and then provides the configuration "address" to one of the second communication ports on the server; and the factory communication port makes the feeding service The device is transmitted with the second terminal device. 19. The invention as recited in claim 18 includes: receiving a request from one of the second terminal devices to establish a pass with the /, ,,; a transmission channel; the first terminal that informs the transmission request; and, the system, establishes the first transmission channel between the third terminal _/, !^ first, and the winter cake machine. The network transmission method, wherein the network device receives a medium relay address from the first terminal; a medium address request, requesting a medium if the medium relay address request is transparent It f for the media relay address server assigned by ^ and inform the media relay bit The second terminal of the address. 21, as described in the second paragraph of the patent application scope, the media relay address is established from the second terminal ϋ/- more included, such as the scope of patent application The network transmission system described in Item 18 is a two-passenger channel. Both the first terminal and the second terminal are in the middle, if the "form-direct transmission 23" is included in the patent application scope After the network and transmission channel of the 21th item, the method further includes: a dedicated transmission method, when establishing the second v transmission, triggering a packet from the first terminal, triggering a packet setting to trigger the network bit The address is transferred to the second terminal, and the second terminal of the connection is notified; ^ one of the other connections is configured; 24 the first series - the terminal and the Χί^ΐ ί. 8 contains; When the first terminal and the second terminal are established, the first two terminals of the second terminal are directly transmitted from the first terminal; and the connection board is sealed and given The 跋 跋 曰 ? 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产%% of the child's terminal and the second 25·^ application for the network range as described in item 18 of the patent range, including the _诵 but the prayer provided by a network address converter The first pass • The network pass, the second channel and the second transmission channel described in item 18 of the patent application scope are configured to enable the conference start 第 2 to transmit a voice transmission between the two terminals. (3) Provided to the righteous start-up agreement to 18