Single-interface seamless switching method and system for mobile internet protocol (IP) system

Mobile AND system of interface seamless switching method and system

technical field

[0001] The invention relates to a switching method, suitable for mobile IP (Mobile IP, MIP), a IPv6 (MIPv6) and a laminated mobile IPv6 (DSMIPv6) management system, MIP, MIPv6, the DSMIPv6 system of called and mobile IP system, especially involving with a mobile device of single wires with a WLAN interface (condition and seamless switching method and system.

background technology

[0002] Along with the expanding of things, mobile device is composed multiple and a popular. A mobile device from a mobile network to the network, the IP address of use in analyses with a exchange. Wherein the existing network connectivity and a on the routing through the IP address identification communication systems, wherein the IP address of mobile device change, wherein the same, and TCP connected; flowing, with very high inconvenient to multiple applications. In aggregate of the problem, And Engineering Task R) rce (the Internet engineering task group; IETF) claims AN Mobile protocol, so the mobile device, and a position using a permanent IP address end of the communication. The Mobile protocol AND a are in aggregate of IPv4 RFC (3344) and a view of IPv6 RFC (3775).

[0003] Mobile IPv4 and IPv6 Mobile protocol and without is IPv4 and IPv6 network respectively, and presentation of IPv4 to time of IPv6 transition; a mobile device for accessing network in only and IPv6 network, possibly with an IPv4 network, or the two coexist. In turn to let the mobile device of a mobile while the network and communication connection, IETF further claims a Television Laminated Mobile IPv6 (DSMIPv6) protocol. Essentially, the MIP protocol; the MIPv6 protocol and DSMIPv6 protocol too larger than 3ev, wherein the tunnel technology, comprising is provided With HAOtome, hometown agent) and data packet forwarding.

[0004] Wireless (Wireless Local Area Network, WLAN network), wherein the cost is low, a speed of fast, popular degrees upper end, composed of a mobile device for. Along with user interface, a mobile device possibly to emigrates current access WLAN AND (Access Point, wireless access point) communication distance; the flowing switching on the signal AND good. In a mobile device of with the interface according (WCDMA Wideband Code Division Multiple Access, wideband code division multiple access) can use, wherein the WLAN interface a switch, a mobile device capable (for of the WCDMA interface) of the voltage and reduced delay switch through the temporary using interface. Which is not each mobile device with multiple interface (. A mobile device without using WLAN interface communication, in which the mobile device from a separation AND and when the AP, wherein the mobile device for accessing novel AND is needed to the conducting, address transmission terminal updating (Of Updating, BU), further HA front receiving terminal updating the data packet of mobile device is a channel life AND, so the mm and 2 seconds are longer in a mobile device to antennas are used data packet in 1 normally. In a mobile device of each network is frequent, thereof and delay according creates wherein a switching to the application, to the multimedia sound video frequencies equal, a power is very high. How to effectively reduce the mobile switching the effect on the upper application is imminent.

invention content

[0005] Target of this invention is a mobile AND system of interface seamless switching method and system, for solving the prior MIP, MIPv6, DSMIPv6 system is in WLAN network interface (condition, wherein the pulling switching time is too long; the switching process data packet cottons for configuring address and network same and other end of the switching process to output massively with a chaotic sequence problem.

[0006] In turn to realize the volume, the invention claims a mobile AND system of interface seamless switching method, for realising mobile device and volume AND a current, AND, comprising:

[0007] The, the monitoring mobile device for accessing network communication power quality, and according to current communication made of mobile device of current AND a switch control of target; AND

[0008] The pedal two, mobile device for informing AND the filling sleep mode, a current buffer AND data packet from; HA

[0009] The invention claims, a mobile device causing the connection and access to volume AND the volume AND, and receiving data of volume AND from the current AND obtaining the data packet from; HA

[0010] The pedal four, mobile device and data packet from HA and input essential cache from the volume AND gain; and in turn from the data packet and precise for caching current AND obtaining from the data packet submission of volume AND obtaining to the transmission layer; the connection separation and current, AND a complete switching.

[0011] Single interface seamless switching method of with, wherein the two, comprising:

[0012] The mobile device for transmitting through PSM setting's NULL frame informing current AND the filling sleep mode.

[0013] Single interface seamless switching method of with, wherein the three, comprising:

[0014] A mobile device causing the connected to the volume through AND the spare address; the address to a mobile device WLAN network card the key position of the address obtaining.

[0015] Single interface seamless switching method of with, wherein the three, comprising:

[0016] In a mobile device access network is a pure IPv6 network, when or IPv6 and IPv4 coexistent network, a volume AND causing the connection, and transmit the DHCP request and routing request according waited for DHCP acknowledge and routing replied:

[0017] A receiving device of acknowledge first; and method for processing following:

[0018] And the IPv6 address, and de-repeated address detecting; the detection time, and current, AND a current AND obtaining the data packet from HA, inserted in the precise buffer the data packet, when detecting time, a switch volume, AND according to a volume AND data packet is received from a address detecting whether succeeds; and succeeds, wherein the volume AND transmission terminal updating information, and intermittently switching AND current, and a current AND a data packet is HA;

[0019] A receiving DHCP to acknowledge first; and method for processing following:

[0020] Configuring address IPv4, a transmission terminal updating information, inserted in the precise buffer the data packet, and intermittently switching AND current, and a current AND a data packet is HA.

[0021] Single interface seamless switching method of with, a mobile device is provided with a timer carried out timing to a time, switching between current AND and volume AND according to the timer.

[0022] Single interface seamless switching method of with, wherein the three, comprising:

[0023] In a mobile device access network is a pure IPv4 network, and IPv4 address, a transmission terminal updating information, inserted in the precise buffer the data packet, and intermittently switching AND current, and a current AND a data packet is HA.

[0024] Single interface seamless switching method of with, wherein the three, comprising:

[0025] In a mobile device for current AND volume of AP, AND is connected to transmit the PSM of the NULL frame, AND buffer is formed with the data packet from HA.

[0026] Single interface seamless switching method of with, wherein the four, comprising:

[0027] In a mobile device for current AND volume of AP, or cut AND volume of current AP, AND is connected to transmit the PSM of the NULL frame, AND buffer is formed with the data packet from HA.

[0028] In turn to realize the volume, the invention claims a mobile AND system of interface seamless switching system, for realising mobile device and volume AND a current, AND, comprising:

[0029] Precise buffer, a buffer mobile device of data packet of application layer; and

[0030] Network quality monitoring module, a monitoring mobile device for accessing network communication current of;

[0031] The switch control module, connected to the precise buffer, the network quality monitoring module, for implementing mobile device according to the current communication made from current AND a switch control of target; AND

[0032] The switch control module informing current AND mobile device stretches to the sleep mode, from the current buffer AND a data packet is HA, the heating connected to accessing target AND the volume AND, wherein the received data of volume AND from the current AND obtaining the data packet from HA, a data packet is HA and input essential cache from the volume AND obtaining, and is orderly the data packet and precise for caching current AND obtaining from the data packet submission of volume AND obtaining to the transmission layer; the connection separation and current, AND completed switching.

[0033] Single interface seamless switching system of, and

[0034] The switch control module is transmitting the PSM lead frame NULL informing current AND mobile device the concave sleep mode.

[0035] Single interface seamless switching system of, and

[0036] The switch control module and vibrates the connected to the volume through AND the spare address, relating the address by the mobile device WLAN network card MAC address's key position.

[0037] Single interface seamless switching system of, and

[0038] The switch control module, which is further used for:

[0039] In a mobile device access network is a pure IPv6 network, when or IPv6 and IPv4 coexistent network, a volume AND causing the connection, and transmit the DHCP request and routing request according waited for DHCP acknowledge and routing replied:

[0040] A receiving device of acknowledge first; and method for processing following:

[0041] And the IPv6 address, and de-repeated address detecting; the detection time, and current, AND a current AND obtaining the data packet from HA, inserted in the precise buffer the data packet, when detecting time, a switch volume, AND according to a volume AND data packet is received from a address detecting whether succeeds; and succeeds, wherein the volume AND transmission terminal updating information, and intermittently switching AND current, and a current AND a data packet is HA;

[0042] A receiving DHCP to acknowledge first; and method for processing following:

[0043] Configuring address IPv4, a transmission terminal updating information, inserted in the precise buffer the data packet, and intermittently switching AND current, and a current AND a data packet is HA.

[0044] Single interface seamless switching system of, and

[0045] The switch control module, which is further used for:

[0046] In a mobile device access network is a pure IPv4 network, and IPv4 address, a transmission terminal updating information, inserted in the precise buffer the data packet, and intermittently switching AND current, and a current AND a data packet is HA.

[0047] Single interface seamless switching system of, and

[0048] The switch control module, which is further used for:

[0049] In a mobile device for current AND volume of AP, AND is connected to transmit the PSM of the NULL frame, AND buffer is formed with the data packet from HA.

[0050] Single interface seamless switching system of, and

[0051] The switch control module, which is further used for:

[0052] In a mobile device for current AND volume of AP, or cut AND volume of current AP, AND is connected to transmit the PSM of the NULL frame, AND buffer is formed with the data packet from HA.

[0053] Compares the existing technology, the beneficial technical effect of this invention characterized in that:

[0054] In aggregate of the prior MIP, MIPv6, DSMIPv6 system (as follows abbreviation mobile system AND) in WLAN network interface (condition, wherein the single the switching time is too long; the switching process data packet cottons for configuring address and network same and other end of the switching process to output massively with a chaotic sequence problem, a overcome the prior protocol's, insufficiency the invention claims a mobile AND the system single interface seamless switching method and system, wherein the seamless soft switching, so the DSMIPV6 system for switching while the WLAN network and configuring address and further antennas are used data packet, large reduced the switching same, and effectively with avoiding wherein a voltage of the switching withProblem. The invention can makes the mobile IP system is the seamless switching between the wireless network, the delay switch is a single-pole in the WLAN interface condition, switching process of thereof. Moveably installed circuit use the mobile terminal device, no need of any is connected to an existing mobile IP or protocol network device, the embodiment and configuration and easy.

[0055] By using the invention, the switching of mobile AND system retards to reduce of switching, wherein longer thereof, and a large of further configured of data packet's the degrees of chaotic sequence the switching with.

Brief description for drawings

[0056] Digital 1 is the invention mobile device end structure, drawing

[0057] The digital 2 is a mobile device and data and signalling interacting flow, image

[0058] Digital 3 is the invention mobile device end of the seamless switching method of flow, image

[0059] Digital 4 is one embodiment field schematic drawing of invention.

detailed description of illustrated embodiments

[0060] Tracking and detailed description to the invention claims a light of the auxiliary digital and specifically embodiment, it does not as to the parts of the invention.

[0061] Shown and a digital 1, NETFILTER HOOK, A for controlling from the data packet of the exits, NETFILTER HOOK B for controlling the network card and system data packet, NETFILTER HOOKA and NETFILTER HOOK B of 2 switch control module (2Handoff Layer ControlModule) and a controller, a sections of the transmission layer or came from the data packet of network card.

[0062] The application of the user application layer (USER LEVEL APPLICATIONS) which is a user, for of the browser, MSN equal, a transmission layer (TRANSPORT LAYER), a network layer (NETWORK LAYER) is an operating system, essential is implemented as a precise, a network of TCP layer, UDP, SCTP equal. The application layer transmitted to the network data a first submit to the transmission layer, which is in a network, and finally is transmitted by the network card. Generally talk-back the transmission layer flowing transmitting the data and a plurality of the application layer of the transmission layer data transmission, which is no exception, which is used for example TCP, a user not channel transmission layer data transmission; and TCP ring is arranged, comprising each possibility transmission rule a control texts, to zerownd-probe equal. Therefore the invention claims an application layer packet data and transmission layer packet data, wherein brief the data packets in front of the switching is not completed transmission. Network layer data packet having NS, NA, RS, RA, BU equal, the data wrapped at the switching imperfect tense transmission, in order to be interactive with the network.

[0063] The transmission layer comprises TCP and protocol; and a on the key retransmission to the data packet of user, a timing control. The network card driving is takes for transmitting and receiving the data packet. 2 Switch control module is takes for detecting and executing for switching, AND DSMIPv6 (DSMIPv6M0BILITY MANAGEMENT MODULE) mobility management system for double stack mobility management system, comprising takes for switching method for IP layer. 2 Switch control module and DSMIPv6 mobility management system with control system resource achieve a switching process.

[0064] The data packet a transmission layer capable of working the output buffer (OUTPUT BUFFER), a data packet a network card can a buffer to the input buffer (INPUT BUFFER) when postponement to upper submission) for. OUTPUT BUFFER and INPUT BUFFER an eight-line buffer two ends of the precise an eight-line buffer. And OUTPUT BUFFER is used for buffer substrate-processing structure capable of the sending temporarily, wherein the switching of the ended with packages is transmitted to a network, INPUT BUFFER is used for buffer network card to drive from the back of the network line, and packages and not submit temporarily electrically connected with the network layer, therefore first buffering. 2 Switch control module in the release an eight-line buffer is a data packet submission is electrically connected with the network layer in a opportunities. A MN and receiving data packet on the submission to the network layer, wherein a possibly bent IN data packet chaotic sequence to make the performance to thereof.

[0065] Network quality monitoring module (Network Quality Monitoring Module) unceasing detecting network quality and informs the DSMIPv6 mobility management system and 2 switch control module when circuit and operating key.

[0066] 2 Switch control module by interactive is a network card and DSMIPv6 system, a control switch for processing the behaviors.

[0067] By using AND support is a mobile device power-saving mode mm, a mobile device for switching the time intermittently maintaining communication with two AND. A mobile device automatic further detects is available AND the process of communication, stores the related information in a spare AND list. At the same time, communication quality monitoring module for monitoring a condition of a current signal AND weakens. The mobile device discovered of the signal weakens to the multiple has, AND discovered to prepare switching any one from the spare AND list. The cutting, a mobile device is current AND further (saying the first cutting) AND transmitting a PSM of the NULL frame, such current AND thinks for mobile device the concave sleep mode, a mobile device buffer data from HA. Wires; and volume AND frequency of the same to current, AND a mobile device for spare address (and called access to spare (AND the key and revisions current of MAC address) AND volume, AND new), otherwise mobile device is a current address to accessing target AND a. Edge of for spare address, and is configured by for address life, AND a hear a mobile device to corresponding, wherein the transmitting data packet to the movable device, wherein a mobile device connected with a spare, AND it and a cutting AND data packet, a cutting AND a sending repeatedly the data is defeated, a mobile device is separated.

[0068] The access to novel, AND mobile device to switch and operation of address. Configuration address's time is possibly very long, and 1 second (wherein a DAD edge), a possibly very short (of for receiving DHCP acknowledge). And configuring address time is very long, a mobile device capable of switching life AND end of the communication during the. Wherein the mobile device is a cutting AND separation life, AND for mobile device buffer the data, a mobile device can makes the data, and transmitting the data packet. Finally same time (for example DAD 1 second to), a mobile device and new AND a. Switching AND the front AND each time, AND a mobile device is connected to transmit the PSM of the NULL frame, so that the number of letting AND is a mobile device data buffer, comprising avoiding consumption of data.

[0069] The novel cutting, AND mobile device configured with the address at the same time, the mobile device for updating BU to HA transmission terminal. Front HA receiving BU, HA is life AND data transmission, therefore, a mobile device further wants regular is connected to life AND as the data. A for mobile device, switching time novel AND is transmitted BU, wherein td the t0+k* (interval+p+q) +a (a < interval; in a mobile device in pause gap of novel, AND ρ of data for switching and cutting AND time-consuming, q is a cutting AND switching novel AND time-consuming) in the received from novel AND data recovery HA, and mobile device of; the t1 of the t2,…, tk time switching life AND processing data, interface, ρ, the t2+p,…, tk+p switching time novel AP0 tx of the x* (interval+p+q) +t0,0 <= χ <= kD

[0070] In a mobile device for a new AND from the HA data, indicated for switching with succeeded. At the time a mobile device is of by a data packet submission to the transmission layer, wherein possibly with the front data buffer is a cutting AND. A mobile device first from the data buffer of novel AND the received essential buffer, and switching life AND an data, and finally life AND separation, submits of the transmission layer the first data from cutting, AND then the submission is in a new teeth AND the data (the precise buffer). The called is the same submission of the invention, the volume of data packet chaotic sequence. A connection of mobile device and separation life, AND mobile device accessing to novel AND, hence, handover alarm.

(0071) PSM the setting's NULL frame (informs AND mobile node to flow into sleep mode, mm AND is the data buffer) is a L2 switch control module control WLAN DRIVER transmission, the precise module and upper applications are to transmit the type the signal.

[0072] Shown and a digital 2, which is a mobile device for data and signalling interacting current map.

[0073] Digital time 2 described switching when the IPv6 network, DAD succeeds the ACK/NAK.

[0074] Transmitting the PSM data packet is to let, AND the L1 is not connected and time for maintaining L1 of the sending wherein data temporarily. With A receiving with AP, wherein withdraw AND is wherein buffer data. Here is mainly the signal and a data stream interactive position, except details part of MN operating switch.

[0075] Is opened; L2 switch control module when the process of communication monitoring thinks with the switching necessity, a trigger switch. PSM on behalf of PSM lead frame NULL.

[0076] The cutting trigger, L1 (Mobile Node) are needed switching on AND the Novel (AND), backoff during life AND (Life AND) is downward MN data transmission (, wherein L1 is connected on newAP, is to receiving data such), A heating life AND substrate-processing PSM first, which is between 2 AND new (link layer, is different from the IP layer) is. And A transmitting RS and DHCP request housing (DHCP REQUEST), a gain the network and IP address. Here is made of new AND connection is a pure IPv6 network, the new network router to transmit RA to A a new AND. The receiving RA, A configuring address and realizes DAD. A a NS (And Solicitation) comprises a on DAD first (DuplicateAddress Detecting) detection. Wherein the DAD detection wants time part, in order to the stored continue transmitting and receiving the data, MN is novel AND substrate-processing PSM first; and switching on AND allowing the casing to antennas are used data. Transmitting PSM to prevent the communicating the novel AND transmitting MN Sequence (NeighborAdvertisement) is output. , MN provided with a DAD timer, and 1 second. On the timer, A switching on AND the new once.

[0077] With, A to back to life AND substrate-processing PSM, in order to prevent obliterated data. A simple, here is according DAD (succeeds it is provided NA, which is further springs in multiple situations with), MN with a pluggable L3 layer (network layer) and. A transmitting BU to HA. The dipole A capable of the cutting AND receiving and transmitting data repeatedly; and BA slowly is made (truth is the same as, a position is not drawn). The receiving BA, A switching life AND the L1 HA the novel AND publishing to the cutting AND a data (HA front receiving BU A transmitting the data of Li's life of transmission). Similar, front cutting life AND A to back to a new AND PSM frame. Here A data from diaper buffer is a new AND receiving to INPUT BUFFER, comprising an submitted to the network layer. The L1 and data and life, AND A pedestal and connected with the cutting AND side and connected on the novel AND. L1 of the application layer transmitting data recovery life, AND then transmits the INPUT BUFFER the first data buffer. The process, wherein MN front novel AP, and is L3 is provided with time (DAD succeeds); the upper and a sending the network the data packet a temporary buffer of OUTPUT BUFFER, comprising A a switching on life AND a sending. A new when life AND switching MN or a advocate MAC address according to the ACK/NAK a spare address; the position is concise is not a sectioned.

[0078] Shown and a digital 3, wherein the invention mobile device end of the seamless switching method of current map. The flowing - comprising:

[0079] Pedal 301, essential buffer preset;

[0080] The pedal 302, wherein the spare generating MAC address, constructing AND connected; and, communication

[0081] Pedal 303, way of communication comprising a spare AND and communication, quality

[0082] The pedal 304, the output current of communication lower than the communication of? A, and step 305, wherein otherwise more to the invention 303, the

[0083] The pedal 305, wherein the output coated with AP? A with, a buffer upper and data, and step 306, wherein otherwise more to the invention 303, the

[0084] The pedal 306, sending the PSM setting to current AND the NULL frame, wherein the network card frequency, a spare MAC causing the connection request to the novel AND device and transmit the DHCP request and routing requests RS;

[0085] Pedal 307, determining whether a routing acknowledge RA first; each, and step 309, otherwise and step 308, the

[0086] Pedal 308, determining whether a DHCP to acknowledge first; each, and configuring address IPv4, and step 312, the

[0087] The pedal 309; and IPv6 address, wherein the DAD detecting the timer, a NS, transmit the PSM setting to current AND the NULL frame, wherein the network card and frequency address transfer, AND life, and step 310, the

[0088] The pedal 310, antennas are used data, and judging DAD for detecting whether overtime; and overtime, transmit the PSM setting to current AND the NULL frame, and step 311, and is overtime, and continuously to antennas are used; data

[0089] The pedal 311, wherein the mobile device and new AND a current AP, and judging COA IPv6 address, and DAD detecting whether succeeds; and succeeds, and step 312, otherwise for allowing AP, wherein to the invention 303, the

[0090] The pedal 312, sending BU, transmit the OUTPUT BUFFER data, and step 313, the

[0091] The pedal 313, wherein the preset data timer, and step 314, the

[0092] The pedal 314, transmitting the data, and data from the timer overtime? A overtime, and switching AND life, and step 315, otherwise continue transmit the data;

[0093] The pedal 315, wherein the mobile device from the cutting AND receiving data, and new AP, a

[0094] Pedal 316, determining whether a a new AND data recovery HA, and receiving, the data buffer the precise buffer, and step 317, otherwise, wherein to the invention 313, the

[0095] The pedal 317, wherein the mobile device for allowing AND a new, AND a cutting AND receiving data;

[0096] The pedal 318, wherein the mobile device and new AND a cutting; AND

[0097] The pedal 319, wherein a submission the data from a new AND receiving the cutting AND the data and precise buffer, saves

[0098] The pedal 320, the connection of mobile device and separation life, AND is completes switch.

[0099] The light of digital 1, 2 and 3; the describes the diaphragm technical solution is specifically one embodiment:

[0100] Wherein the DSMIPv6 system comprises a MIPV6 system and system MIP function, here and DSMIP and system for example, and this invention claims a mobile device switching AND other end of the main tension of switching on AND is as follows:

[0101] 1)A precise buffer in mobile device operation essential, and a data packet of transmission layer emitted by the key processing connected With the Netfilter mechanism, comprising two aspects: First; and cutting process at the time, method and application layer and transmission layer packet data, and data packet on the OUTPUT; BUFFERThe second; and when spacer (is mobile node front life AND separation truly, connected on the novel AND and a to overturning a new teeth AND the data packet, mobile node the first data packet, an eight-line buffer of upper submission,) is firmly mobile node once more connected on life AND the acquiring data, and cutting AND separation, mobile node the first upper submission from the cutting AND data submits the buffer to upper and data, the avoiding a data packet chaotic sequence, wherein the data from cutting AND recently connected in a new teeth, method for inevitably AND the data transmission first) comprises a networkThe insulated INPUT BUFFER. The data packets in a transmission opportunities in network or a submitted to network layer processing.

[0102] 2)Revises mobile device WLAN network card driving motor, wherein wherein the recording and different AND connected with, and can, wherein disagreement current voltage AND transmitting Disassociation (the fastening connection) signal to the separately connected with the ACK/NAK substrate-processing With the other AND a connection) signal.

[0103] 3)Maintaining a spare AND list, for obtaining through the WLAN driving intermittent scanning. Comprising a on removal current the outer AND a mobile device AND an information in transmission range, comprising AND the ESSID and signal strength, available bandwidth.

[0104] 4)Generating a spare address; the address can be connected to the mobile device WLAN network card address part key base body for modifying to obtain (for example, a MN third address is 00-02-3f-07-09-66, a spare MAC a through revising address the second bytes (0) is 1; spare address for producing is 01-02-3f-07-09-66, although spare address of the lower production method of possibility and other by nodes MAC with conflict, further possibility is a small). Such mobile device with two MAC addresses, wherein the invention, mobile device the address external address except for calling is connected with the spare address, a MAC address of the used for allowing the address.

[0105] 5)Is a network quality monitoring module and a 2 switch control module; the two module current monitoring communication made and trigger switch key.

[0106] 6)Along with user mobile, mobile device distance current AND is composed multiple and a far, a signal is composed of multiple and a first; the voltage of rises. Network quality monitoring module discovered of the current network quality that is lower than width threshold value; informs 2 switch control module, selecting best AND (for example signal is good in the spare AND list, bandwidth is a standard, specifically for selecting the invention discussion range), without prepare connected.

[0107] 7)2 Switch control module has a buffer function first filter, the data recovery transmission layer, request solution for Updating DSMIPv6Bind signal and DHCP address Router according Solicitation (routing, RS) is request data packet, the data packets is connected and cache rows of.

[0108] 8)2 Switch control module (life) AND transmit the NULL frame is current, AND the PSM lead, informing current AND processes the sleep mode, AND for mobile device buffer data packet from HA.

[0109] 9)2 Switch control module control mobile device for spare AND (target, AND new) AND causing the connection. And uses a spare address end is connected, and transmit the DHCP request and RS request.

[0110] 10)A lower a condition discussed:

[0111] (a) access network is a pure IPv6 network, front or a network access of IPv6 and IPv4 coexistent network and mobile device and a DHCP acknowledge, a routing acknowledge Routing Advertisement first (RA). The case, a mobile device capable and COA IPv6 address according to RA first (C0A is a simple form of CareOf Address, a mobile protocol CONVERTING terminology). Ends of MIPv6, DSMIPv6 and mobile communicating, two addresses, one of the hometown address, the other one is the COA address. The COA address is a mobile node for is used for communication, address of assigned a network access, which a mobile node access the difference and difference of network, and hometown address that invariable. For example, and mobile node from the network A mobile network to B, and obtaining network AND is a address of comprising: an202. 198. 39. 1 Or 2002: ccO: 2026: 3ff: : 1st, Wherein a COA address. At the time a mobile node flowing with an nodes (CN Correspondent, Node) correspondingly, wherein the mobile node is a tunnel sealing data packet, sending HA. The tunnel outer layer source address of the COA address, a tunnel true distribution CN data packet, wherein source address is a mobile node address hometown. The HA receiving tunnel structure, comprising unties the sealing substrate-processing inner data packet to the network in. The CN receiving the data packet, wherein source address is a mobile node address hometown, CN thinks of mobile node is in hometown network, there is no mobile. The mobile protocol AND a shielding the mobile MN behaviour to CN). And performing a redundancy address detecting (Of Address, Detecting DAD), a redundancy address detecting flowing casing is generally 1 second. A mobile device for transmitting the adjacent to discover the first NS (is a abbreviation of Neighbour Solicitation, is adjacent discovery request structure, comprising DAD detecting the step; NS a address of mobile node in soon with, wherein the nodes and short examined the inner address which are used by oneself; each, and transmitting NA request), which is novel AND substrate-processing a PSM of the NULL frame, told the new AND mobile device stretches to the energy-saving mode, such novel AND a mobile device with buffer NA (is in the abbreviation of Neighbour Advertisement, referred to the adjacent discovery request acknowledge structure, and DAD detecting, the receivedNA is taken surfaces of the communicating on behalf of the address, DAD failure). A mobile device of network card frequency access to life AND, and a transmitting the frame PULL gain to life AND the stored data recovery HA, simultaneously inserted in the precise buffer the data packet from the top, and starting corresponding to the normally. The second 1) via, a mobile device for transferring PSM setting to life AND the side frame NULL, wherein the network card frequency access to novel AND a. A network data from DAD a new AND the succeeds. A DAD succeeds, then transmits the BU and data, simultaneously obtaining intermittent exchange network card frequency life AND a data recovery HA, the front the network card frequency, AND is connected to transmit the PSM of the NULL frame.

[0112] the (b) mobile device accessing to a pure IPv4 network, or a receiving DHCP acknowledge first. The case, a mobile device capable and IPv4 address first and a corresponding to the address plugged. A mobile device for transmitting BU first, then inserted in the precise buffer the data. The receiving data of novel, AND mobile device intermittent from cutting AND acquiring data. The switch (exchange network card frequency access to other AND) on the first transmitting the PSM setting to current voltage AND the NULL frame, mm and is a mobile device data buffer.

[0113] 11)In a mobile device of novel AND receiving from the HA data; and indicated according HA received BU. At the same time, a mobile device is installed debit and credit data from a new AND) of the transmission layer, submission is not first pressure time to the gain the data to life AND, which is Disassociation the signal connecting the separation and life, AND submits first data from life AND obtaining; and submits a new gained AND the data (the precise buffer). A start corresponding to the normally, handover gravity of DSMIPv6.

[0114] Digital 4) is a field of this invention. , Mobile device from APl cover mobile network, close to APl network covering edge time, a mobile device switch switching AP2 from APl; and technical solution of this invention describes. The light of digital 3 and embodiment, describes a switching process of the mobile device.

[0115] And the communication a mobile device A initial access to APl) and a APl. A mobile device for DSMIPv6 protocol, a CN (Corresponding Node, communication node) of the relay from HA by way of tunnel. Circuit Li's mobile MN, emigrates the APl communication domain gradually, a same worse the MN detecting to the communication quality, simultaneously with signal with good AP2 the MN further detects the is. A preparation switching on and APl AP2. A through which MAC address's key, and spare generating MAC address, a called (MAC_B the original address of called) MAC_A. A first is APl to send a PSM flag bit's NULL frame, unit comprises A current to perform a sleep mode, APl is A buffer the data packet from HA. And A causing the connected to AP2, and MAC_B, then transmits the DHCP request and is RS requests. A unequal DHCP or RA. A for receiving RA, while starting MN to the conducting address, and DAD detection. The stored, A switch (APl with MAC_A; the switch, is AP2 substrate-processing PSM flag bit's NULL frame end of the corresponding first), is the DAD time, MN and a AP2. A from the AP2 receiving data packet the right DAD succeeds. A DAD succeeds, BU transmitting through AP2. Further - BU lower support part at HA on the circuit part; the front and HA position to APl data transmission, further - APl is A data buffer. The transmitting part of the BU, MN can also transmitting the data. At the same time MN provided with a timer, wherein the timer crossed, MN switching APl acquiring data, so relapse. Received from AP2 is MN data recovery HA, MN the data buffer, which is MN time and first APl acquiring data; the connection separation and APl, submits the first data from APl; and submits the precise buffer the data, handover alarm. A MN receiving address request DHCP of acknowledge to the AP2 first network, and L1 and IPv4 C0A first; and a BU and data, and switching between AP2 and APl, and, and is received from AP2 data recovery HA, A pressure time and data recovery APl and separation and connected with APl, which are connected and submission and AP2 data from APl, handover alarm.

[0116] Part, the invention can also provided with an or more of embodiments, and without divorced from the invention mental and substantive condition, comprising familiar and technical field, further in a shaft according to the invention is the corresponding change and distortions; and corresponding change and distortions is a claim has a protection with one invention is.