CN101473315A - Mobile router with session proxy - Google Patents
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- CN101473315A CN101473315A CNA2007800228340A CN200780022834A CN101473315A CN 101473315 A CN101473315 A CN 101473315A CN A2007800228340 A CNA2007800228340 A CN A2007800228340A CN 200780022834 A CN200780022834 A CN 200780022834A CN 101473315 A CN101473315 A CN 101473315A
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Abstract
The invention relates to a mobile router with a session proxy module. The session proxy module can be used as the proxy (such as the proxy transmitting control protocol) of all sessions (such as transmission control protocol session) passing through said mobile router, namely, when a terminal user desires to establish the transmission control protocol from a regional terminal device (such as a laptop computer) to a target (such as a third party server), the session proxy module can (1) terminate the transmission control protocol session from the regional terminal user device and (2) establish the transmission control protocol (or other protocol) session from the return wiring interface to said target; thus, the network flow of all terminal users lucidly passes through the lines of the mobile router.
Description
The cross reference of related application
The application's case is advocated the right of priority of following U. S. application case:
(1) No. the 60/800th, 749, the U.S. Provisional Application case, and on May 16 2006 applying date, name is called " in order to the mobile router of monitoring line " " Mobile Router That MonitorsLinks ", invents artificial Douglas S, does not rein in;
(2) No. the 60/800th, 679, the U.S. Provisional Application case, and on May 16 2006 applying date, name is called " mobile router with serial device interface " " Mobile Router With SerialInterface ", invents artificial Douglas S, does not rein in; And
(3) No. the 60/800th, 750, the U.S. Provisional Application case, and on May 16 2006 applying date, name is called " mobile router with dialogue agency " " Mobile Router With SessionProxy ", invents artificial Douglas S, does not rein in.
The related application case of the application's case is as follows, is Patent Cooperation Treaty (PCT) international application for applying for simultaneously with this case:
(1) Patent Cooperation Treaty (PCT) international application, name are called " in order to the mobile router of monitoring line " " Mobile Router That Monitors Links ", invent artificial Douglas S, do not rein in, procurator's file 060274PCT number; And
(2) Patent Cooperation Treaty (PCT) international application, name is called " mobile router with serial device interface " " Mobile Router With Serial Interface ", invent artificial Douglas S, do not rein in, procurator's file 060276PCT number.
Background technology
Many people are because various purpose is used the device of portable or wireless terminal user computer-type.These devices comprise intelligent mobile phone, the device of handheld computer-type, and personal digital assistant has the laptop computer of wireless network interface card, or the like.The user uses such device to remove to read and write Email Information usually, and image or television image archives are downloaded and watched to access world-wide web (Internet), executive routine or the like.
In order to use these wheeled apparatus, the wheeled apparatus wireless network of must having the ability to be connected to.General radio area network (WLAN) distributes (deploy) usually in buildings (structure) the inside, and is for example tame, office, disclosed commercial building or the like.Radio area network comprises one or more wireless access point (access point) usually, for example wireless router or focus (hot spot), it is to be connected to wheeled apparatus with wireless mode, and allows wheeled apparatus be connected to simultaneously wired (wired) network (or other networks) with the access point cue.The common so effective mobility (mobility) that can limit a wireless user.User in moving must stay the family of wireless access wireless Local Area Network, office, or buildings, if but the user in moving leaves above-mentioned place, user in moving may leave the scope of wireless access point, and thereby loses the contact of network.For IEEE 802.11 standards, just so-called Wi-Fi, the scope of these access points approximately is indoor 50 meters and outdoor 100 meters.
Collaborative (cooperating) Wi-Fi Hotspot of several can be placed so that the Wi-Fi covering scope of broad to be provided in some campus or metropolitan area in the zone.Like this, the user in moving generally when mobile, can provide the preferable radio access of user in moving, and can keep preferable wireless contact in campus or metropolitan area.Yet the user in moving has left campus or metropolitan area, and the user loses wireless communication easily, has therefore limited user's wireless movability.
Such awkward situation is solved by cellular (cellular) network in a way, allow wheeled apparatus connect wireless data, wherein data transmission standard such as global system for mobile communications GSM (GlobalSystem for Mobile Communications)/general packet wireless radio service GPRS (GeneralPacket Radio Service) or evolved reinforced data rate (EDGE by the cellular network that uses data transmission standard (data communication standard); Enhanced Datarates for GSM Evolution).These cellular networks provide the coverage rate of broad usually compared to radio area network or Wi-Fi.Person very, cellular network generally applicable to roaming (roaming) user, allows the user can keep the state of line when a cellular network moves to another.
Yet mobile terminal user's device can be experienced service disruption usually, because the decline rapidly of network signal (no matter being Wi-Fi or cellular network).When the user in cellular network, focus, or between the wireless network when mobile fast this problem can worsen more.This might take place, for example, (i) because user's radio access provide/reach an agreement on (protocol) at new honeycomb, focus, or wireless network is inconsistent, (ii) because new honeycomb, focus, or the contact of wireless network Yong Sai too, (iii) because at honeycomb, focus, or wrong transmission signal between the wireless network, or many other reasons.
In addition, mobile terminal user may experience the problem on the usefulness of other types, comprises bit rate (bit rate) or the change of frequency range (bandwidth) in data transmission procedure, and the variation of the quality of service (just signal is beated, postpone, data are lost or the like).
Therefore, exist a demand to alleviate or relax the problem that the user is met with on movable terminal device.
Summary of the invention
General, the invention relates to a kind of mobile router.Mobile router is by a Local Area Network, and for example Wi-Fi or Wi-MAX network can connect one or a plurality of wheeled apparatus.Mobile router can be played the part of the lock road (gateway) of communication from wheeled apparatus to backhaul line (backhaul) network, simultaneously by wireless link and wireless route communication.Backhaul can comprise a cellular network, for example GSM/GPRS or general mobile news systems (UTMS) network, or the wireless network of other types.Backhaul can be connected to world-wide web (internet) or other network (for example Wide Area Network).Like this, wheeled apparatus can be related to world-wide web by mobile router and backhaul with destination apparatus.
In addition, because mobile router is to be wirelessly connected to backhaul, when wheeled apparatus moved, wireless link can move together with wheeled apparatus.For example, mobile router can be installed in, and be attached to, or otherwise be placed in the vehicles, as automobile, bus, ship, railcar, or the like, wherein the terminal user of wheeled apparatus is passenger (or driver).Like this, terminal use person when mobile can keep wireless connection.
According to different embodiment, mobile router can comprise a dialogue proxy module (sessionproxy module), it sets up two transport protocol sessions-is between mobile router and wheeled apparatus, and between mobile router and the destination device-when terminal user is searched being connected of destination device by mobile router.Like this, if the dialogue between a mobile router and a destination device is lowered, during dialogue between mobile router and the wheeled apparatus still can be carried out (active), thereby can allow wheeled apparatus think that dialogue remains to carry out when mobile router when dialogue reduction.Simultaneously, these two dialogues can be used different agreements.For example, transmission control agreement (TCP is used in the dialogue between wheeled apparatus and mobile router; Transmission Control Protocol) agreement, and mobile router uses different agreements with the dialogue between the destination device, for example high-speed transfer is controlled agreement (HS-TCP; High Speed TCP) or scps protocol (SCPS; Space Communication ProtocolSpecifications).In addition, two dialogues of being set up by mobile router can be transparent (transparent) for terminal user.Simultaneously, terminal user can be selected cancellation (disable) dialogue agent functionality in certain embodiments.Can meet like this when terminal user when using one to use needs with transmission control agreement gauge outfit (header) enciphering.
Other potential beneficial effects are when the backhaul signal reduces, and the connection wheeled apparatus 16 that session proxy module can stop transmission control agreement to be talked with is opened it and retreated (back-off) timer.This is an advantage because in transmission control agreement, wheeled apparatus generally can normal supposition its forward (forward) transmit package because network congestion, and can therefore begin to reduce user's dialogue.Opposite, session proxy module maintains the dialogue between mobile router and the wheeled apparatus, itself and mobile router separate with dialogue between the backhaul, then wheeled apparatus can hypothetical network Yong Sai be not a problem, and the control of the transmission between mobile router and wheeled apparatus agreement dialogue may not can reduce.To be transmission control agreement timer with the Yong Sai form can adjust the potential beneficial effect of another one dynamically makes line (link) to carry out optimization at the characteristic of specific backhaul (signal is beated etc. for packet loss for example, delay).
In addition, mobile router can comprise a dialogue link module, the 2nd layer and the 3rd layer of monitoring mobile router and backhaul.Like this, descend rapidly (drop-off) when link monitor module detects a signal, link monitor module can be rebuild line as early as possible and be given the interruption of terminal user to reduce service.According to different embodiment, the link monitor module executive mode be by transmit with control and measuring (or detecting) data packet on backhaul wireless connections circuit.Like this, the user does not need to open again his or her application or dialogue.When connection rebulid, the user only can notice that applications/sessions is slack-off in a period of time usually.
In addition, according to different embodiment, mobile router can comprise a serial data port (serialdata port), in order to link with a serial data device.In addition, mobile router may comprise the open module of serial data device data, it is transmitting data on the destination device from serial data device on the backhaul, as server/database, make the far-end user can access database with from serial data device acquisition (retrieve) data.Above-mentioned serial data device can be, for example, a GPS (GPS) receiver, in order to the address data of record mobile router, or the serial data device of other types.In addition, except transferring data to server/database, but far-end user access mobile router, with directly from the serial data device access data.In addition, the serial device interface of mobile router can be and uses the output data/command signal that is connected to serial data device.
The present invention's these and other advantage after the description meeting clearer.
Description of drawings
To assist various embodiments of the invention are described by following diagram, wherein:
Fig. 1 is the calcspar according to the network shown in the various embodiments of the invention, and it comprises a mobile router.
Fig. 2 is the module calcspar according to the mobile router shown in the various embodiments of the invention.
Fig. 3 is the operational flowchart according to the link monitor module of the mobile router shown in the various embodiments of the invention.
Embodiment
Fig. 1 is the diagram according to the network shown in the various embodiments of the invention 10.As shown in Figure 1, network 10 comprises a mobile router 12, and it is connected 14 with a wheeled apparatus 16 by wireless telecommunications and links (some place please refer to and is " regional wireless telecommunications link 14 " afterwards).Wireless telecommunications connection 14 can be used as the part of wireless network 15, and it comprises mobile router 12 and wheeled apparatus 16.Wireless network 15 (some place please refer to and is " area wireless network 15 " afterwards) can be, for example, and a Wi-Fi network (for example IEEE 802.11 networks), WiMAX network (IEEE 802.16), blue bud network, or other wireless networks that are fit to.
According to different embodiment, mobile router 12 is to be arranged in the vehicles that (co-located) move to make mobile router 12 be portable (mobile) with wheeled apparatus 16, make the terminal user of wheeled apparatus 16 can enjoy and be wirelessly connected to world-wide web 18, when the vehicles (not shown in the diagram) pass several honeycomb or nodes (node) relevant with wireless network 22 by mobile router 12.The vehicles that move can be, for example, automobile, lorry, bus, ship, train or railcar, or the like.Mobile router 12 can be installed on the vehicles safety and can avoid ruined position.For example, mobile router 12 can be installed in the luggage case of automobile, and the terminal user of wheeled apparatus 16 can be passenger or car steering.Like this, terminal user when the different honeycomb of wireless network 22, can enjoy wireless connections in the garage.
And, be connected though have only a wheeled apparatus 16 in Fig. 1, to show with mobile router 12, should know that many wheeled apparatus 16 can be connected with mobile router 12 by wireless network 14.For example, a scene, wherein mobile router 12 is to be arranged in the automobile, surpasses a passenger and uses terminal moving type device 16 to be connected to world-wide web 18 (or other network) by mobile router 12 and backhaul 20.For example, a passenger may check e-mails on handheld PC, and this moment another passenger's browsing world wide web (WWW), or the like.
Yet, be to be understood that mobile router 12 does not need to be mounted in other embodiment, fixing, or other modes are placed on vehicles that move.For example, a user may stay at home, work, or other static positions use mobile routers 12, or carry mobile router 12 near his/her.
As shown in Figure 1, a receiver 30 can receive and transmit wireless signal to wireless router 12 by wireless communication link 22.One on line network 32 of backhaul 20 can be connected to world-wide web 18 by one or more gateways 24.Connect network 32 and can comprise traditional network equipment, as server (server), router (router), interchanger (switch), or the like, and can provide any wireless network services to mobile router 12.Certainly, in Fig. 1, has only the receiver 30 of demonstration, be to be understood that backhaul 20 can comprise many receivers, each different zone by backhaul 20 service that provides is provided, make when mobile router 12 is mobile between several honeycombs of backhaul 20 and node, mobile router 12 can continue with backhaul 20 lines.
As shown in Figure 1, third-party server 26 can connect by calcaneus rete internet 18 (or other network).Like this, wheeled apparatus 16 can arrive third-party server 26 by mobile router 12 and backhaul 20 accesses.
Fig. 2 is the calcspar according to the simplification shown in the mobile router 12 of various embodiments of the invention.As shown in Figure 2, mobile router 12 can comprise one or more processor (processor) 40, one or more storage unit 42, one backhaul network interface 44, and a local network interface 46, and it can pass through system bus (bus) 48 and connect.
According to different embodiment, area wireless signal line 14 uses transmission control agreement (TCP with backhaul wireless communication link 22 boths; Transmission Control Protocol) transfer protocol is in the dialogue layer of network convention.Transmission control agreement is a kind of core agreement of world-wide web agreement, abbreviates TCP/IP usually as.Use transmission control agreement, the line between the application of network host can produce is used thereon and can be used flow port (stream socket) switched traffic (stream).Flow port is a kind of world-wide web port, and it provides to point to and connects (connection-oriented), sequence (sequence), and the not copy data flow process of not having the record border.Transmission control agreement guarantees from the side of sending to take over party's fiduciary level and transmits data in regular turn.
Transmission control agreement uses network congestion to avoid algorithm simultaneously, avoids to reach Yong Sai.There are many such algorithms to use.Generally, according to some algorithm, a maximum block (MSS is specified in transmission control agreement; Maximum Segment Size).The form of Yong Sai is kept in the transmission end, has limited the sum of unacknowledged packets (unacknowledged), and unacknowledged package be can end points to the transmission of end points (end-to-end).For avoiding Yong Sai to cause collapse, transmission control agreement when line is initial, slowly begin to a closing time (timeout) afterwards.The form that two maximum blocks (MSS) are arranged during beginning.Though initial speed is slow, the speed of increase is very fast; Confirm package for each, the Yong Sai form is increased by each maximum block (MSS), makes that the Yong Sai form can double for each time distance time.When the Yong Sai form surpasses a critical value (threshold), or packet loss, algorithm can enter into a new state, is called Yong Sai and avoids.Do not have the affirmation of duplicating as long as receive, the Yong Sai form can increase a maximum block (MSS) by forward in distance each time in the time.When a packet loss, the affirmation of duplicating can be received.The Yong Sai form reduces a maximum block (MSS) a closing time in (timeout) incident.
The open module 56 of serial port data can allow data receive from a serial data device 36, be connected to a serial port 38 of mobile router 12, can link by a transmission control agreement stream (or other any kenels can be used for the data stream of mobile router 12) from mobile router 12.
Other, traditional part of router, for example Memory Controller does not show in Fig. 2 for simplification.
Mentioned, link monitor module 52 can be monitored the line of the 2nd layer (data bus connection or keriotheca) and the 3rd layer (IP or network layer) between mobile router 12 and the backhaul 20 before.Like this, descend rapidly (drop-off) when link monitor module 52 detects a signal, link monitor module 52 can be rebuild line as early as possible to reduce service terminal user's interruption.For example, in the general portable now scene of calculating, when network signal descends (drop-off) rapidly, user's application and network dialogue can stop usually.Therefore, the user must open application and/or dialogue again when network is rebuild.Moreover, be difficult to usually estimate when line can rebulid.
Whether link monitor module 52 can receive data packet with affirmation by monitor-interface 44.If no, number second of link monitor module 52 meeting dormancy (sleep) A quantity is proceeded detecting initiatively at next step then.If interface 44 is just receiving package, link monitor module 52 before next step carries out active detecting, (for example 10 x A second) may dormancy (sleep) more of a specified duration.So in the middle of if backhaul network communication link 22 seems to operate, then link monitor module 52 may can be transmitted less active detecting on backhaul 20.
The far end device that link monitor module 52 is monitored can be adjusted (configure) and become to allow link monitor module 52 confirm to be wired to whether a specific far end device is feasible.For example, line is path (default route) decided at the higher level but not officially announced, domain name server (DNS), and/or certificate server 19 (see figure 1)s may be monitored, and other any devices at world-wide web also can be adjusted (configure).
Fig. 3 is the process flow diagram that shows link monitor module 52 according to various embodiments of the invention.This flow process can the lasting execution of back segment (background) with the 2nd layer on the backhaul network communication link 22 of monitoring mobile router 12 with the 3rd layer.
At block 80, link monitor module 52 may detect backhaul 20 and be which kind of form (whether be the GSM/GPRS network interface for example, or UTMS network interface).Afterwards, at block 82, whether link monitor module 52 can decision be written into suitable backhaul network driver (driver).If no, at block 96, can be written into driver again, and if success, flow process can be got back to block 92 (by described down).If at block 82, determined the driver that is written into, when whether again link monitor module 52 decisions receive package on the backhaul network interface 44, process flow advances enters block 84.This be the 3rd layer of check-or network layer-state (OCI model).In this way, flow process advances to block 86, and link monitor module 52 enters into dormancy (sleep) a period of time (xx second) because network connectivity starts.
If, in block 84, package does not receive in backhaul radio connecting 22, process flow advances enters block 88, whether link monitor module 52 can decision the 2nd layer, or the data bus connection layer, set up with a specific far end device (for example communication network 32 or be connected to the device of world-wide web 18).In one embodiment, point-to-point agreement (PPP; Point-to-Point Protocol) may be used in the 2nd layer of line (OCI model).PPP is a kind of agreement of setting up direct line between two nodes, and describes in detail in IETF (Internet Engineering Task Force) RFC 16.So, in block 88, whether link monitor module 52 can be set up by the point-to-point agreement line of decision.Certainly, in one embodiment, also can use the agreement of different direct lines.
If point-to-point agreement line is not set up, then process flow advances enters block 92, and PPP can reset to establish a connection to the point-to-point agreement line of far end device.If such operation success, if or block 88 decision PPP lines set up, process flow advances enters block 90, whether link monitor module 52 decisions have default route (default route) to far end device.In the technology of route, a default route is also referred to as " gateway of bringing up the rear (gateway of last resort) " simultaneously sometimes, when being does not have other known paths to exist, is the network path by the router decision for a data packet purpose address.The package of unknown purpose can be sent to default route in all routing tables (route table) in router.This path generally can be taken other route to, and it handles package in a like fashion.If the path is known, package can pass toward known path.If unknown, package can pass to the default route of router, and it can take other path to usually, and continues.In case router reaches the purpose of a known paths, router can determine which path is effective from finding out best mode of coincideing (most specificmatch).The network of eldest son's net mask (subnetmask) the purpose IP address that coincide is normally arranged.
Therefore, default route may be the line that is connected to far end device, and is different with direct line.If default route is arranged, process flow advances enters block 94, and whether link monitor module 52 can arrive by default route by the decision far end device.If, in block 90, there is not the default route decision, flow process can be got back to block 88, and its point-to-point agreement line can attempt to rebulid.
Flow process also can advance to block 90 from block 86 after a bit of dormancy.If decision mobile router 12 has default route in block 90, process flow advances enters block 94, and whether its link monitor module 52 decisions can arrive default route.If cannot arrive default route, flow process is got back to block 88, and wherein the PPP line can attempt to rebuild.
If in block 92, point-to-point agreement agreement still can not be rebuild after x time attempt is rebuild, and process flow advances enters block 96, and card (card) driver that wherein is used for backhaul network interface can be written into again.If in block 66, after x trial, can't successfully be written into card (card) driver, process flow advances enters block 98, and wherein link monitor module 52 attempts being written into again PC card bus (cardbus) driver (or other are used for the similar driver that mobile router does not use the PC card).PC card bus is that PC stores the card (PCMCIA of League of Nations; Personal ComputerMemory Card International Association) 5.0 or upgrade (for example JEIDA 4.2 or upgrade) 32 bit PCM CIA cards.PC card bus in fact is a kind of 32 bits of PC card outward appearance, 33MHz PCI (Peripheral Component Interconnection) bus.PC card bus comprises bus control, and it allows controller on the bus can not need to control by central processing unit (CPU) other device or storer.
If the flow process success, flow process can be got back to block 96, and wherein card driver can be attempted being written into again.If the trial in block 98 is unsuccessful (can be other similar drivers) being written into PC card bus driver again, flow process can advance to block 100 according to different embodiment, wherein mobile router 12 start again.Afterwards, flow process can be got back to block 80.
Get back to block 94, can determine wherein whether default route is accessibility, if can not arrive, flow process can advance to block 102 according to different embodiment, wherein can determine to be used for the domain name server (DNS) of mobile router.Then, at block 104, can determine whether can arrive domain name server.If, be feasible according to different embodiment, in block 106, can determine to be used for certificate server 19 (see figure 1)s of mobile router 12.Then, at block 108, can determine whether can arrive certificate server 19.If of course, process flow advances enters block 110, and wherein link monitor module 52 enters into of short duration dormancy, does not wherein transmit any package.After a period of time dormancy, flow process is got back to block 84 and is used for reaffirming the 3rd layer.
If domain name server (DNS) can not arrive at block 104, if or certificate server can not arrive at block 108, flow process can be got back to block 88, wherein can the point-to-point agreement line of access (the 2nd layer of line), as mentioned above.
Some parameter on stream is adjustable (configurable).For example, the employed specific time of different timers all is adjustable.When making in factory, these parameters set earlier, far-end adjustment on network, and/or adjust voluntarily.In addition, according to different embodiment, the user also can adjust specific parameter voluntarily.
In addition, flow process is and/or to use pattern to be finely tuned (fine-tuned) and optimized at specific backhaul.Fine setting or optimized purpose are to transmit the highest data output, and the fastest network signal descends and detects, and network is rebuild the most fast.For example, the target that detects may change.For example, mobile router 12 may detect dialogue management 29 at a network job center (NOC; Network operations center) 30 (see figure 1)s, or other are connected to the device of network 18.In addition, except initiatively detecting, mobile router 12 can only be listened backhaul network interface 44.When network 18 is Wide Area Networks (WAN) when other network (or) of low frequency range, the latter's mode can have advantage.
The continuable execution of point-to-point agreement initial order original text (startup script) is up to setting up successful line.Inefficacy shown in the block 88 (failure) is if point-to-point agreement initial order original text is having unsuccessful line x time with the backhaul card in Fig. 3.If PPP initial order original text can not be set up successful line, be likely because mobile router 12 has surmounted network covering scope rather than because network failure.Yet, if point-to-point agreement line can not be set up the process (step 92) that link monitor module 52 will lose efficacy in a long relatively time (for example above one hour).
The problem that usually runs into of the user of cellular network is that data usually connect and lose in the prior art.In the time of this generation, go up the application of carrying out at wheeled apparatus (just being connected to cellular network) and can stop to carry out, and control the agreement dialogue when transmission and can open again when rebuliding.
This problem can solve in the session proxy module 54 of mobile router 12.Get back to Fig. 2, session proxy module 54 can be used as the dialogue agency through all dialogues of mobile router 12.That is, for example, set up a transmission control agreement and talk with a purpose (for example being connected to the third-party server 26 of network 18 among Fig. 1) when an area terminal user seeks from an area terminal device (for example wheeled apparatus 14 of Fig. 1), session proxy module 54 may stop to talk with from the transmission control agreement that wheeled apparatus is come, rather than is based upon the transmission control agreement dialogue between backhaul network interface 26 and the purpose.Mobile router 12 may link in area wireless network and keep the transmission control agreement dialogue that separates on the wheeled apparatus 16 on 14 simultaneously.Like this, all terminal users may be to arrange the path pellucidly 16 from mobile router 12 to wheeled apparatus in the network state between terminal user and the purpose (traffic).Like this, a dialogue reduction (for example backhaul network communication link 22) can not have influence on other dialogue (for example dialogue between mobile router 22 and the wheeled apparatus 16) negatively.
Above-mentioned settling mode can reach many advantages.For example, when backhaul network link 22 reductions (is uncommon situation for cellular network), session proxy module 54 can be kept transmission control agreement dialogue to area end terminal user (for example wheeled apparatus 16).Like this, if the application of carrying out on wheeled apparatus 16 can depend on transmission control agreement dialogue, the execution that application can continue is because there is transmission control agreement dialogue, even the dialogue of the TCP on backhaul network communication link 22 is lost in mobile router 12.When backhaul network communication link links again, it uses the execution that terminal user can continue and does not need to open again application with dialogue.
The potential benefit of another one is when backhaul binding 22 reduces, and the transmission control agreement dialogue unlatching that session proxy module 54 can be avoided being attached to wheeled apparatus 16 retreats timer.This is an advantage, because under transmission control agreement agreement, wheeled apparatus 16 can be supposed because of network congestion usually can not look like preceding transmission package, thereby can begin to reduce the speed of user's dialogue.Opposite, the transmission control agreement that has session proxy module 54 to keep between mobile router 12 and the wheeled apparatus 16 is reached an agreement on, wheeled apparatus 16 will can hypothetical network Yong Sai be not a problem, and the control of the transmission between mobile router 12 and wheeled apparatus 16 agreement dialogue can not underspeed yet.
The potential benefit of another one is that TCP timer and Yong Sai form can be adjusted dynamically, makes specific backhaul (for example packet loss postpones, and signal is beated) is carried out optimization.For example, if network has higher packet loss, MTU (MTU then; Maximumtransmission unit) may be smaller to increase the possibility that the data packet that has transmitted successfully arrives purpose.MTU can be with reference to the size (calculating with bit) of maximum data package, allows the layer of communications protocol of an appointment can be to front transfer.Opposite, if network has less packet loss, MTU may increase better to be exported.
In another embodiment, except transmission control agreement dialogue, session proxy module 54 can be set up the dissimilar agreement dialogue according to user's purpose, carries out higher potential line (latency link) to design.High so potential line can be high-speed transfer control agreement (HS-TCP; HighSpeed TCP) or scps protocol (SCPS; Space Communication ProtocolSpecifications).The new Yong Sai control algorithm of transmission control agreement is used in high-speed transfer control agreement, can be referring to RFC 3694.Scps protocol is the extension group of existing agreement, and new agreement is to be set up by CCSDS (Consultative Committee for Space Datat System).Scps protocol is by ISO Standard 15894 (archives transmission), 15893 (transport layers), and 15892 (safe floors), 15892 (network layers) are set up.
In one embodiment, on a regional wireless telecommunications line 14, have a transmission control agreement dialogue between wheeled apparatus 16 and mobile router 12, and having other high potential agreement dialogue (for example HS-TCP or SCPS) on the backhaul 20 between mobile router 12 and purpose.In addition, the backhaul 20 that is based upon of high potential line may be with transparent way by carrying out on the area terminal user of session proxy module 54.
In addition, among the different embodiment, area terminal user can have the option of cancellation session proxy module 54.The user of one wheeled apparatus 16 may cancel session proxy module 54, for example, is presented at control panel on the wheeled apparatus by mobile router 12.Simultaneously, mobile router 12 may have a switch or button, allows the user can cancel session proxy module 54.For the user, when the user wants to keep transmission control agreement and talks with purpose, probably cancel session proxy module 54.For example, some specific virtual private net (VPNs; Virtual PrivateNetworks), world-wide web agreement safety (IPSEC for example; IP security) virtual private net can be with transmission control agreement gauge outfit encipher.World-wide web agreement safety is one group of agreement guaranteeing network convention (IP) communication security, is to each world-wide web agreement (IP in the data stream the inside; Internet Protocol) package authentication and/or encryption.If it is encrypted that transmission control agreement gauge outfit has, session proxy module 54 generally can not be deciphered the gauge outfit of transmission control agreement data packet, therefore, can not transmit package in non-transmission control agreement dialogue.At such example, the user can wish to cancel session proxy module 54.Yet, the virtual private net of other kenels, for example Secure Sockets Layer (SSL; Secure socket layer) virtual private net does not need transmission control agreement gauge outfit is encrypted, so the area terminal user when using the virtual private net of such Secure Sockets Layer, can not want or needs cancellation session proxy module 54.
See also Fig. 2, the open module 56 of serial port data may be connected to the serial port 38 of mobile router 12 from the data that serial data device 36 obtains, and allow data obtain from transmission control agreement stream (or the data stream of other types, for example HS-TCP or SCPS data stream).The open module 56 of serial port data, and by backhaul 20 and world-wide web 18 constitutes remote data storehouse 25 from installing 36 data.Like this, the data from serial data device 36 can obtain by world-wide web 18 far-ends.
Serial data device 36 can be followed mobile router 12 communications, uses any suitable serial data protocol, for example, comprises universal synchronous bus (USB; Universal Serial Bus) standard, rs-232 standard, RS-485 standard, or IEEE 1394 (live wire) standard.
Serial data device 36 can be any type of serial data device, for example, and GPS (GPS; Global Positioning System) receiver.In one embodiment, wherein serial data device 36 is GPS receiver, and this allows the position data (and address data of mobile router 12) of GPS receiver can be by other device remote access.In one used, wherein mobile router 12 was mounted on the portable vehicles, for example automobile or lorry, and the data of address just can be used by various application, for example:
Company can access database 25 to determine the location of its vehicles;
A company can determine and analyze its vehicles in the harbour unloading, comprises the time that determines to spend at traffic congestion;
The vehicles that tracking goes adrift;
Determine optimized bang path;
Collect the traffic data of instant (real-time), can analyze and/or share traffic and openly serve; Or
Collect historical traffic data, can be used on the purpose of traffic planning.
The stream that in different embodiment, is produced by the open module 56 of serial port data, can meet with protocol standard, for example RFC 2217 " Telnet Com Port Control Option " agreement makes the terminal user device of this standard of support can use data.For being of great use for the computer of form, because these computers can have use standard on the machine of global positioning system apparatus in area end, ready-made figure supports application.Terminal user can be installed driver that RFC 2217 conforms at the form computer, and allows gps data be presented on the regional gps data of its form computer from mobile router 12.And because the gps data that obtains from mobile router 12 is accessible at world-wide web agreement (IP) network (for example world-wide web), far-end user's form computer can take up an official post where put access data from world-wide web.
Above-described example is based on global positioning system apparatus as serial data device 36 and be connected to mobile router 12.The serial data device 36 that is to be understood that other types also can be used, and the open process of similar data also can be used in these serial data devices, makes the data of coming from serial data device can pass through world-wide web (or other network) 18 accesses.For example, in one embodiment, serial data device 36 can be to transport remote information service (telematics) device.Like this transport the remote information service unit can write down erecting device about the usefulness of the vehicles and the data of operation (for example diagnostic data).These data are can be by mobile router 12 open and be stored in 25 li of databases, and making can be by other people access on the world-wide web 18.
In other embodiment, serial data device 36 can be sale teminal machine (POS; Point-of-sale) device can write down the information of selling or paying the bill.The point-of-sale terminal machine data can open making can be via world-wide web 18 accesses in database 25 like this.
In other embodiment, serial data device 36 can be used for the in-car entertainment environment (down-load music for example, video signal, recreation, or the like, in the third party system) far-end control or be used for the interface of existing communication system (for example alert) with broadcasting.
In addition, except transferring data to central server (for example database 25), a far-end user can access mobile router 12 with the data of direct access from serial port 36.For example, in one embodiment, the far-end user who has authenticated can access one certificate server 23 (see figure 1)s with the position of decision mobile router 12.The far-end user can use this address to remove directly to get in touch with mobile router 12.Similarly, the terminal user in the zone of mobile router 12 can be by area wireless network 14 accesses from the next data of serial port.
In addition, according to different embodiment, the serial device interface 38 of mobile router 12 can be used in output data/command instruction to connect serial data device 36.For example, from remote area, signal/information can be sent to mobile router 12, and in order to allow signal/information output to serial data device by serial port 38, wherein signal/information may cause serial data device 36 to produce some actions.For example, signal/information may start serial data device 36.For example, mobile router 12 is installed in the automobile, and serial data device 36 can be the part of may command device or the device of system.For example, serial data device 36 can be closed engine (for example thief's example), opens in careless closing the door, and starts alarm function, or the like.Serial data device 36 also can be according to different embodiment, the function of paying, and data download receives advertisement, amusement, recreation, and/or information, and carry out network control and management.
The various embodiment of the present invention is to be understood that for haveing the knack of the various modifications of this operator in this description, replaces, and selects to be all obvious.For example a little steps can be carried out in differing order or simultaneously in Fig. 3.Such modification is replaced, and it is indivisible with spirit to select to be regarded as scope of the present invention.
Claims (38)
1, a kind of mobile router is characterized in that it comprises:
One local network interface is in order to wireless communication one wheeled apparatus by an area wireless network;
One backhaul network interface be in order to a backhaul wireless link;
One or more processor; And
One storer links with this one or more processor, and wherein this memory storage instruction when this instruction is carried out by this one or more processor, makes this one or more processor:
Between this wheeled apparatus and a destination device, the transport protocol sessions that detecting is attempted to set up by this wheeled apparatus, this transport protocol sessions are to set up between this area wireless network and this backhaul by this mobile router attempt; And
When detecting attempt when setting up this transport protocol sessions, initial one first replaces transport protocol sessions on area wireless network between this mobile router and this wheeled apparatus, and between this mobile router and this destination device initial one second alternative transport protocol sessions on this backhaul.
2, mobile router according to claim 1 is characterized in that wherein said first substitutes transport protocol sessions and the identical transfer protocol of this second alternative transport protocol sessions use.
3, mobile router according to claim 2 is characterized in that wherein said first substitutes transport protocol sessions and second substitute transport protocol sessions and all use transmission control agreement to talk with this.
4, mobile router according to claim 1 is characterized in that the transfer protocol of the wherein said first alternative transport protocol sessions use is different with this second alternative transport protocol sessions.
5, mobile router according to claim 1 is characterized in that wherein said first substitutes transport protocol sessions and comprise transmission control agreement dialogue, and this second substitutes transmission control agreement dialogue and comprise high-speed transfer control agreement dialogue.
6, mobile router according to claim 4 is characterized in that wherein said first substitutes transport protocol sessions and comprise transmission control agreement dialogue, and this second substitutes transmission control agreement dialogue and comprise the scps protocol dialogue.
7, mobile router according to claim 1 is characterized in that wherein said area wireless network comprises a Wi-Fi network.
8, mobile router according to claim 1 is characterized in that wherein said area wireless network comprises a Wi-MAX network.
9, mobile router according to claim 1 is characterized in that wherein said backhaul comprises cellular network.
10, mobile router according to claim 9 is characterized in that wherein said cellular network comprises global system for mobile communications/general packet wireless radio service network.
11, mobile router according to claim 9 is characterized in that wherein said cellular network comprises universal mobile communication agreement network.
12, mobile router according to claim 7 is characterized in that wherein said backhaul comprises cellular network.
13, mobile router according to claim 12 is characterized in that wherein said cellular network comprises global system for mobile communications/general packet wireless radio service network.
14, mobile router according to claim 13 is characterized in that wherein said cellular network comprises universal mobile communication agreement network.
15, mobile router according to claim 4 is characterized in that wherein said area wireless network comprises a Wi-Fi network.
16, mobile router according to claim 4 is characterized in that wherein said area wireless network comprises a Wi-MAX network.
17, mobile router according to claim 15 is characterized in that wherein said backhaul comprises cellular network.
18, mobile router according to claim 17 is characterized in that wherein said cellular network comprises global system for mobile communications/general packet wireless radio service network.
19, mobile router according to claim 17 is characterized in that wherein said cellular network comprises universal mobile communication agreement network.
20, mobile router according to claim 1, it is characterized in that wherein said mobile router is based on wireless computer, be by kneetop computer with wireless network interface card, the personal digital assistant that radio function is arranged, the pouch-type computer, WiFi handset, one Portable has the game machine of network function, video screen, digital camera, the sound playing machine, guider, monitoring camera, caution system, the wireless device of paying the bill, and the group that the wireless point-of-sale intelligence channel is formed is selected.
21, mobile router according to claim 1 is characterized in that wherein said mobile router is installed on the vehicles.
22, mobile router according to claim 21 is characterized in that the wherein said vehicles are by automobile, lorry, and railcar, bus, and the group that ship is formed is selected.
23, a kind of mobile router is characterized in that it comprises:
One local network interface is in order to wireless communication one wheeled apparatus by an area wireless network;
One backhaul network interface be in order to a backhaul wireless link; And
One or more processor and this local network interface and this backhaul network interface communication, wherein this one or more processor is programmed to carry out:
Between this wheeled apparatus and a destination device, the transport protocol sessions that detecting is attempted to set up by this wheeled apparatus, this transport protocol sessions are to set up between this area wireless network and this backhaul by this mobile router attempt; And
When detecting attempt when setting up this transport protocol sessions, initial one first replaces transport protocol sessions on area wireless network between this mobile router and this wheeled apparatus, and between this mobile router and this destination device initial one second alternative transport protocol sessions on this backhaul.
24, mobile router according to claim 23 is characterized in that wherein said first substitutes the transmission dialogue and second substitute the identical transfer protocol of transmission dialogue use with this.
25, mobile router according to claim 24 is characterized in that wherein said first substitutes transport protocol sessions and second substitute transport protocol sessions and all use transmission control agreement to talk with this.
26, mobile router according to claim 23 is characterized in that the transfer protocol of the wherein said first alternative transport protocol sessions use is different with this second alternative transport protocol sessions.
27, mobile router according to claim 26 is characterized in that wherein said:
This processor is programmed to carry out, and detecting one attempt is set up transmission control agreement and talked with between this wheeled apparatus and this destination device;
This first alternative transport protocol sessions between this mobile router and this wheeled apparatus comprises transmission control agreement dialogue; And
Second to substitute the dialogue that transmission control agreement dialogue comprises be from high-speed transfer control agreement dialogue between this mobile router and this destination device this, selects in the group that is formed with the scps protocol dialogue.
28, mobile router according to claim 27 is characterized in that wherein said:
Area wireless network comprises a wireless network, is to select in the group that Wi-Fi network and Wi-MAX network are formed; And
Backhaul comprises a cellular network, is from global system for mobile communications/general packet wireless radio service network, and selects in the group that forms of universal mobile communication agreement network.
29, mobile router according to claim 23 is characterized in that wherein said mobile router is installed on the vehicles.
30, mobile router according to claim 29 is characterized in that the wherein said vehicles are by automobile, lorry, and railcar, bus, and the group that ship is formed is selected.
31, a kind of transport protocol sessions Proxy Method is characterized in that it may further comprise the steps:
One detecting step, by a mobile router, detecting is set up a transport protocol sessions by this wheeled apparatus attempt between a wheeled apparatus and a destination device, and this transport protocol sessions is to set up between this area wireless network and this backhaul by this mobile router attempt; And
One initial step, when detecting attempt when setting up this transport protocol sessions, between this mobile router and this wheeled apparatus, replace transport protocol sessions on area wireless network, and between this mobile router and this destination device, substitute transport protocol sessions on this backhaul by this mobile router initial one second by this mobile router initial one first.
32, transport protocol sessions Proxy Method according to claim 31 is characterized in that wherein said first substitutes the transmission dialogue and second substitute the identical transfer protocol of transmission dialogue use with this.
33, transport protocol sessions Proxy Method according to claim 32 is characterized in that wherein said first substitutes transport protocol sessions and second substitute transport protocol sessions and all use transmission control agreement to talk with this.
34, transport protocol sessions Proxy Method according to claim 31 is characterized in that the transfer protocol of the wherein said first alternative transport protocol sessions use is different with this second alternative transport protocol sessions.
35, transport protocol sessions Proxy Method according to claim 34 is characterized in that wherein
This detecting step comprises detecting one attempt foundation transmission control agreement and talks with between this wheeled apparatus and this destination device;
This first alternative transport protocol sessions between this mobile router and this wheeled apparatus comprises transmission control agreement dialogue; And
Second to substitute the dialogue that transmission control agreement dialogue comprises be from high-speed transfer control agreement dialogue between this mobile router and this destination device this, selects in the group that is formed with the scps protocol dialogue.
36, transport protocol sessions Proxy Method according to claim 35 is characterized in that wherein said:
Area wireless network comprises a wireless network, is to select in the group that Wi-Fi network and Wi-MAX network are formed; And
Backhaul comprises a cellular network, is from global system for mobile communications/general packet wireless radio service network, and selects in the group that forms of universal mobile communication agreement network.
37, transport protocol sessions Proxy Method according to claim 31 is characterized in that wherein said mobile router is installed on the vehicles.
38, according to the described transport protocol sessions Proxy Method of claim 37, it is characterized in that the wherein said vehicles are by automobile, lorry, railcar, bus, and the group that ship is formed is selected.
Applications Claiming Priority (4)
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| US80074906P | 2006-05-16 | 2006-05-16 | |
| US60/800,679 | 2006-05-16 | ||
| US60/800,749 | 2006-05-16 | ||
| US60/800,750 | 2006-05-16 |
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| CNA2007800228340A Pending CN101473315A (en) | 2006-05-16 | 2007-05-15 | Mobile router with session proxy |
| CNA200780022811XA Pending CN101473551A (en) | 2006-05-16 | 2007-05-15 | Mobile router with serial device interface |
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| CNA2007800228016A Pending CN101480078A (en) | 2006-05-16 | 2007-05-15 | Mobile router that monitors links |
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| CNA200780022811XA Pending CN101473551A (en) | 2006-05-16 | 2007-05-15 | Mobile router with serial device interface |
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| CN (3) | CN101480078A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107018053A (en) * | 2015-09-28 | 2017-08-04 | 恩智浦有限公司 | Controller LAN (CAN) device and the method for controlling CAN business |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101613170B1 (en) | 2009-10-13 | 2016-04-18 | 삼성전자주식회사 | Apparatus and method for providing access point function in portable communication system |
| CN102118878A (en) * | 2011-03-10 | 2011-07-06 | 华为终端有限公司 | Device and method for wireless routing |
| CN103167626A (en) | 2011-12-15 | 2013-06-19 | 中兴通讯股份有限公司 | Wireless fidelity (WIFI) network bridge and communication method and system based on WIFI |
| US10064095B2 (en) * | 2012-09-29 | 2018-08-28 | Adaptive Spectrum And Signal Alignment, Inc. | Optimized control system for aggregation of multiple broadband connections over radio interfaces |
| JP6360337B2 (en) * | 2014-03-28 | 2018-07-18 | クラリオン株式会社 | In-vehicle communication unit and service providing system |
| WO2016089414A1 (en) | 2014-12-04 | 2016-06-09 | Adaptive Spectrum And Signal Alignment, Inc | Method and apparatus for predicting successful dsl line optimization |
| US10101992B2 (en) * | 2015-06-15 | 2018-10-16 | Lear Corporation | Telematics control unit comprising a differential update package |
| CN105162511B (en) * | 2015-09-28 | 2018-07-31 | 上海摩软通讯技术有限公司 | Wireless network bridge system, bridge and its bridging method |
| CN111884938B (en) * | 2020-06-30 | 2022-12-30 | 海尔优家智能科技（北京）有限公司 | Router information acquisition method and device |
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2007
- 2007-05-15 CN CNA2007800228016A patent/CN101480078A/en active Pending
- 2007-05-15 CN CNA2007800228340A patent/CN101473315A/en active Pending
- 2007-05-15 CN CNA200780022811XA patent/CN101473551A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018053A (en) * | 2015-09-28 | 2017-08-04 | 恩智浦有限公司 | Controller LAN (CAN) device and the method for controlling CAN business |
| CN107018053B (en) * | 2015-09-28 | 2021-01-08 | 恩智浦有限公司 | Controller Area Network (CAN) device and method for controlling CAN service |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101480078A (en) | 2009-07-08 |
| CN101473551A (en) | 2009-07-01 |
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