CN100466821C - Wireless switch-in network, method for grouped transmission and method for terminal switch - Google Patents
Wireless switch-in network, method for grouped transmission and method for terminal switch Download PDFInfo
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- CN100466821C CN100466821C CNB2006100767235A CN200610125952A CN100466821C CN 100466821 C CN100466821 C CN 100466821C CN B2006100767235 A CNB2006100767235 A CN B2006100767235A CN 200610125952 A CN200610125952 A CN 200610125952A CN 100466821 C CN100466821 C CN 100466821C
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Abstract
The invention relates to a wireless access network and a switch method between the grouped transmission and terminal, to keep the continuous property of user service when the user WiFi terminal moves in WiMAX access network, wherein it combines the WiMAX technique with WiFi technique, stores the projection list between the WiFi terminal and physical chain circuit in WiMAX access network and WiMAX terminal, to make them send the group of WiFi terminal via relative physical chain circuit to the WiFi terminal; the WiFi access point, after completing the rebonding request access of WiFi terminal, uses the first broadcast message to trigger the refresh of WiMAX terminal projection list; when adding one projection relationship in the projection list, the WiMAX terminal uses the second broadcast to trigger the WiMAX access network to refresh its projection list.
Description
Technical field
The present invention relates to moving communicating field, particularly Wireless Fidelity (Wireless Fidelity is called for short " WiFi ") and micro-wave access to global intercommunication (Worldwide Interoperability for MicrowaveAccess is called for short " WiMAX ") technology.
Background technology
Along with the communication technology develops to individualized, mobile, broadband direction gradually, mobile technology, wireless technology, broadband technology and multimedia communication technology gradually become the research hot spot technology.Except merging for the construction of core net, Access Network will be one of bottleneck of limiting network performance boost.Therefore wireless access wide band technology is one of key technology of next-generation communication network development.Access technology by wired, wireless or fixing, move can be divided into multiple.
Wireless access is meant the access technology that partly or entirely adopts wireless means from the switching node to the user terminal.Wireless access system has advantages such as the networking expense is low, dilatation can be decided as required, operating cost is low, so can be used as replenishing of wired network in developed regions, can in time substitute out of order wired system rapidly or the short-term occasional service is provided; In development or the outlying district can be widely used for replacing the wire user loop, save time and invest.Wireless access technology is divided into mobile the access and the fixing two big classes that insert.
Mobile broadband wireless inserts present stage and mainly is meant the 3G (Third Generation) Moblie technology, and this technology can realize the broadband access under the mobile status, but in following access speed difference that can provide of different translational speeds.
Broadband wireless technical development at present is rapid, various broadband wireless technology occurred, to satisfy the application need of WLAN (wireless local area network), wireless MAN, Wireless Personal Network etc.The broadband wireless technology has presented a kind of diversified development trend.From the whole world, with international electronics and (the InstituteElectrical Access Network d Electronics Engineers of The Institution of Electrical Engineers, abbreviation " IEEE ") 802.11 series standards are Wireless Fidelity (the Wireless Fidelity on basis, abbreviation " WiFi ") clone has become the WLAN (wireless local area network) main flow of (Wireless Local Area Network is called for short " WLAN "); Also obtain the extensive support and the participation of industry in addition based on the WiMAX of IEEE 802.16 series standards, might develop into the standard of the fixing and wireless mobile access of industry metropolitan area broadband wireless.
Specifically, WiFi is 802.11 standard IEEE 802.11b subclass with complete compatibility, it uses open 2.4GHz direct sequence spread spectrum, and maximum data transfer rate is 11Mbps, also can be adjusted into 5.5Mbps, 2Mbps and 1Mbps bandwidth to transfer rate according to the signal power.
IEEE 802.16 is for working out wireless MAN (Wireless metropolitan area networks, abbreviation " WMAN ") working group of standard establishment, this working group mainly is responsible for the air-interface standard of fixed wireless access, relate to multichannel multiple spot distribution service (Multi-channel Multi-point DistributionService, abbreviation " MMDS "), local multiple spot distributes access service technology such as (Local Multipoint DistributeService are called for short " LMDS ").WiMAX is intended to promote the promotion and application of the serial air protocol of IEEE 802.16 (comprising IEEE802.16, IEEE 802.16d, IEEE 802.16e) in the whole world.
WiFi and WiMAX compare, and respectively have superiority.WiFi is the mainstream standard of present wireless access, and the WiFi industry is quite ripe at present, WiFi function that a lot of personal digital assistants (Personal DigitalAssistant is called for short " PDA "), portable machine are all integrated.And compare with WiFi, WiMAX has farther transmission range, wideer Frequency Band Selection and higher access speed or the like, and the expectation meeting becomes a mainstream standard of wireless network between the coming years.
In actual applications, have following problem: the user terminal of integrated WiFi function can't carry out transfer of data by existing access way in the WiMAX Access Network, can't move freely and non-interrupting service in the WiMAX Access Network.
Cause the main cause of this situation to be, because WiMAX industry ground zero, the terminal cost is higher, be difficult to enter in enormous quantities domestic consumer, WiFi function that the current majority user terminal is all only integrated, as existing a lot of PDA, portable machine etc., yet in the prior art, do not have the correlation technique that WiFi is combined with WiMAX, the user terminal of existing WiFi function can't carry out transfer of data by existing WiFi access way in the WiMAX Access Network.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of wireless access network and the changing method of transmission packets and terminal wherein, makes user WiFi terminal when mobile, can keep the continuity of customer service in the WiMAX Access Network.
For achieving the above object, the invention provides a kind of wireless access network, comprise micro-wave access to global intercommunication WiMAX Access Network and a plurality of WiMAX terminal, each described WiMAX terminal is connected with at least one Wireless Fidelity WiFi access point;
The WiFi terminal inserts described WiMAX Access Network by described WiFi access point and described WiMAX terminal;
Described WiMAX Access Network and described WiMAX terminal comprise the mapping table of described WiFi terminal and physical link respectively, and the grouping with described WiFi terminal sends from the corresponding physical link according to described mapping table.
Wherein, described WiFi access point triggers WiMAX terminal renewal described mapping table wherein by first broadcast after finishing access according to the heavy bind request of described WiFi terminal.
In addition, described WiMAX terminal is according to described first broadcast, in the mapping table of described WiMAX terminal, revise or newly-increased corresponding mapping relations, and in the corresponding physical link, transmit the grouping of the WiFi terminal that inserts according to described heavy bind request according to the mapping relations of revising or increase newly.
In addition, described WiMAX terminal after the newly-increased mapping relations, triggers WiMAX Access Network renewal described mapping table wherein by second broadcast in described mapping table.
In addition, described WiMAX Access Network is according to described second broadcast, revise mapping relations corresponding in the mapping table of described WiMAX Access Network, and in the corresponding physical link, transmit the grouping of the WiFi terminal of described heavy bind request access according to amended mapping relations.
In addition, described first broadcast is one of following:
MAC layer broadcast, arp request broadcast or IP layer broadcast;
The source address of described first broadcast is the address of the WiFi terminal of described heavy bind request access.
In addition, described second broadcast is one of following:
Arp request broadcast or IP layer broadcast;
The source address of described second broadcast is the address of the WiFi terminal of described heavy bind request access.
In addition, the mapping relations in the described WiMAX terminal mapping table are:
Mapping between the MAC layer address of described WiFi terminal and the described WiMAX terminal prot number; Or,
Mapping between the IP address of described WiFi terminal and the described WiMAX terminal prot number.
In addition, the mapping relations in the described WiMAX Access Network mapping table are eat dishes without rice or wine the mapping between the link No. of the IP address of described WiFi terminal and described WiMAX Access Network.
The present invention also provides the transmission method of WiFi end packet in a kind of wireless access network, and described WiFi terminal inserts the WiMAX Access Network by WiFi access point and WiMAX terminal; Described method comprises following steps:
Described WiMAX Access Network sends to described WiMAX terminal according to the mapping table of described WiFi terminal and physical link with described downlink grouped from the corresponding physical link when receiving the downlink grouped of described WiFi terminal;
Described WiMAX terminal further according to the mapping table of described WiFi terminal and physical link, sends to described WiFi access point with this downlink grouped after receiving downlink grouped from the WiMAX Access Network from the corresponding physical link;
Described WiFi access point sends to described WiFi terminal with the downlink grouped that receives.
The present invention also provides the changing method of WiFi terminal in a kind of wireless access network, comprises following steps:
The WiFi access point sends first broadcast to the WiMAX terminal after finishing access according to the heavy bind request of described WiFi terminal;
Described WiMAX terminal is according to first broadcast that receives, in the mapping table of described WiMAX terminal, revise or increase newly the mapping relations of described WiFi terminal, and in the corresponding physical link, transmit the grouping of this WiFi terminal according to the mapping relations of revising or increase newly.
Wherein, also comprise following steps:
Described WiMAX terminal after the newly-increased mapping relations, sends second broadcast to the WiMAX Access Network in its mapping table;
Described WiMAX Access Network is according to described second broadcast that receives, revise the mapping relations of WiFi terminal correspondence described in the mapping table of described WiMAX Access Network, and in the corresponding physical link, transmit the grouping of this WiFi terminal according to amended mapping relations.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, by the WiMAX technology is combined with the WiFi technology, preserve the mapping table of WiFi terminal and physical link respectively in WiMAX Access Network and WiMAX terminal, make WiMAX Access Network and WiMAX terminal the grouping of WiFi terminal to be sent to this WiFi terminal from the corresponding physical link according to the corresponding relation in the mapping table separately, thereby make when this WiFi terminal moves freely in the WiMAX Access Network, can not interrupt its business, still can keep its professional continuity.
The WiFi access point is after the heavy bind request of finishing the WiFi terminal inserts, trigger the renewal of WiMAX terminal mapping table by first broadcast, make the WiMAX terminal in time to make amendment or to add to the mapping relations in the mapping table, make the WiFi terminal when a WiFi access point is linked into another WiFi access point, the WiMAX terminal can in time be transmitted the grouped data of this WiFi terminal in the corresponding physical link according to correct mapping relations, guarantee in the process that this WiFi free terminal moves the continuity that it is professional.
When the WiMAX terminal increases mapping relations newly in mapping table, in other words in the WiFi terminal when other WiMAX terminals have inserted this WiMAX terminal, trigger the WiMAX Access Network by second broadcast and upgrade its mapping table, make the WiMAX Access Network can its mapping table of time update in the mapping relations of this WiFi terminal, and reselect the grouped data that correct physical link sends this WiFi terminal according to amended mapping relations, thereby guarantee that the WiFi terminal moves to the process in another WiMAX terminal field from a WiMAX terminal field, its business is not interrupted.
Mapping relations in the WiMAX terminal mapping table are the mapping between the mac-layer address of WiFi terminal and the WiMAX terminal prot number; Or the mapping between the IP address of WiFi terminal and the WiMAX terminal prot number.This mapping table can be transmitted with the layer two MAC on the WiMAX terminal or the three layers of IP routing table merges, and does not take space unnecessary on the WiMAX terminal.
Mapping relations in the WiMAX Access Network mapping table are eat dishes without rice or wine the mapping between the link No. of the IP address of WiFi terminal and WiMAX Access Network, can merge with three layers of IP routing table on the WiMAX Access Network equally, avoid taking space unnecessary on the WiMAX Access Network.
Description of drawings
Fig. 1 is the wireless accessing network structure schematic diagram according to first embodiment of the invention;
Fig. 2 is the wireless accessing network structure schematic diagram according to second embodiment of the invention;
Fig. 3 is the transmission method flow chart according to WiFi end packet in the wireless access network of third embodiment of the invention;
Fig. 4 is the changing method flow chart according to WiFi terminal in the wireless access network of four embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Core of the present invention is the WiMAX technology is combined with the WiFi technology, make the WiFi terminal insert the WiMAX Access Network by WiFi access point and WiMAX terminal, and, preserve the mapping table of WiFi terminal and physical link respectively in WiMAX Access Network and WiMAX terminal, make WiMAX Access Network and WiMAX terminal the grouping of WiFi terminal to be sent to this WiFi terminal from the corresponding physical link according to the corresponding relation in the mapping table separately, thereby make when this WiFi terminal moves freely in the WiMAX Access Network, can not interrupt its business, still can keep its professional continuity.
According to inventive principle the first embodiment of the invention Radio Access Network is described below.
As shown in Figure 1, wireless access network comprises WiMAX Access Network and a WiMAX terminal, this WiMAX terminal is connected with WiFi access point 1 by port one, is connected with WiFi access point 2 by port 2, and each WiFi terminal inserts the WiMAX Access Network by WiFi access point and WiMAX terminal.Wherein, WiMAX terminal and WiFi access point may reside on the physical entity, also can be independently two physical entities of difference.
In order to guarantee that the WiFi terminal inserts professional continuity behind the WiMAX Access Network, WiMAX Access Network and WiMAX terminal comprise the mapping table of WiFi terminal and physical link respectively, and the grouping with the WiFi terminal sends from the corresponding physical link according to mapping table for WiMAX Access Network and WiMAX terminal.Wherein, the mapping relations in the WiMAX terminal mapping table can be the mapping between media interviews control (Medium Access Control is called for short " MAC ") layer address of WiFi terminal and the WiMAX terminal prot number, and are as shown in table 1; Or, the mapping between the IP address of WiFi terminal and the WiMAX terminal prot number, as shown in table 2.This mapping table can be transmitted with the layer two MAC on the WiMAX terminal or the three layers of IP routing table merges, thereby does not take space unnecessary on the WiMAX terminal.Mapping relations in the WiMAX Access Network mapping table can be eat dishes without rice or wine the mapping between the link No. of the IP address of WiFi terminal and WiMAX Access Network, and are as shown in table 3.This mapping table can merge with three layers of IP routing table on the WiMAX Access Network equally, need not take space unnecessary on the WiMAX Access Network.
Table 1
Table 2
Table 3
By preserving mapping table respectively at WiMAX Access Network and WiMAX terminal, make WiMAX Access Network and WiMAX terminal the grouping of WiFi terminal to be sent to this WiFi terminal from the corresponding physical link according to the corresponding relation in the mapping table separately, thereby make when this WiFi terminal moves freely in the WiMAX Access Network, can not interrupt its business, still can keep its professional continuity.
When in the scope of WiFi terminal WiFi access point 1 under the WiMAX terminal, moving in the scope of WiFi access point 2, WiFi access point 2 inserts it according to the heavy bind request of this WiFi terminal, and triggers WiMAX terminal renewal mapping table wherein by first broadcast.This first broadcast can be one of MAC layer broadcast, address resolution protocol (Address Resolution Protocol is called for short " ARP ") request broadcast or IP layer broadcast.Wherein, the source address of this first broadcast is the address of the WiFi terminal of this new access.Such as first broadcast that WiFi access point 2 is sent is a MAC layer broadcast, and then the target MAC (Media Access Control) address of this message is a broadcast address, and source MAC is this WiFi terminal MAC Address.And for example first broadcast that sent of WiFi access point 2 is an ARP request broadcast, then the source MAC of this message is this WiFi terminal MAC Address, source IP address is the IP address of this WiFi terminal, and target MAC (Media Access Control) address is complete 0, and purpose IP address is address arbitrarily.The IP address of this WiFi terminal can be obtained by standard reverse address resolution protocol (Reverse Address Resolution Protocol is called for short " RARP ") request by WiFi access point 2.
The WiMAX terminal is according to the source address in first broadcast, revises the mapping relations corresponding with it in the mapping table of WiMAX terminal, is No. 2 ports with the port numbers of the WiMAX terminal of this WiFi terminal correspondence in these mapping relations by No. 1 original port modifications.After renewal was finished, this WiMAX terminal was transmitted the grouping of this WiFi terminal that inserts again in the corresponding physical link according to amended mapping relations.Because the WiMAX terminal can in time be transmitted the grouped data of this WiFi terminal according to correct mapping relations in the corresponding physical link, thereby has guaranteed this WiFi terminal in the process that moves freely, the continuity that it is professional.
Below the second embodiment of the invention wireless access network is described.As shown in Figure 2, wireless access network comprises WiMAX Access Network and two WiMAX terminals, be WiMAX terminal 1 and WiMAX terminal 2, WiMAX terminal 1 is connected with WiFi access point 1 by port numbers 1 again, be connected with WiFi access point 2 by port numbers 2, WiMAX terminal 2 is connected with WiFi access point 3 by port numbers 3, and the WiFi terminal inserts the WiMAX Access Network by each WiFi access point and corresponding WiMAX terminal.Wherein, WiMAX terminal and WiFi access point may reside on the physical entity, also can be two physical entities independently.
In order to guarantee that the WiFi terminal inserts professional continuity behind the WiMAX Access Network, each WiMAX Access Network and WiMAX terminal comprise the mapping table of WiFi terminal and physical link respectively, and the grouping with the WiFi terminal sends from the corresponding physical link according to mapping table for each WiMAX Access Network and WiMAX terminal.Wherein, the mapping relations in the WiMAX terminal mapping table can be the mapping between the mac-layer address of WiFi terminal and the WiMAX terminal prot number, and are as shown in table 1; Or, the mapping between the IP address of WiFi terminal and the WiMAX terminal prot number, as shown in table 2.This mapping table can be transmitted with the layer two MAC on the WiMAX terminal or the three layers of IP routing table merges, thereby does not take space unnecessary on the WiMAX terminal.Mapping relations in the WiMAX Access Network mapping table can be eat dishes without rice or wine the mapping between the link No. of the IP address of WiFi terminal and WiMAX Access Network, and are as shown in table 3.This mapping table can merge with three layers of IP routing table on the WiMAX Access Network equally, avoids taking space unnecessary on the WiMAX Access Network.
When the WiFi terminal moves in the scope of 2 times WiFi access points 3 of WiMAX terminal in the scope of 1 time WiFi access point 1 of WiMAX terminal, WiFi access point 3 inserts it according to the heavy bind request of this WiFi terminal, and triggers the mapping table that WiMAX terminal 2 is upgraded wherein by first broadcast.This first broadcast can be one of MAC layer broadcast, ARP request broadcast or IP layer broadcast.Wherein, the source address of this first broadcast is the address of the WiFi terminal of this new access.
WiMAX terminal 2 is according to the source address in first broadcast, newly-increased corresponding mapping relations in the mapping table of WiMAX terminal 2, and this WiFi terminal corresponding port number is No. 3 ports of WiMAX terminal 2 in the newly-increased mapping relations.
WiMAX terminal 2 after the newly-increased mapping relations, triggers WiMAX Access Network renewal mapping table wherein by second broadcast in mapping table.In mapping table in upgrading WiMAX terminal 2, notice WiMAX Access Network upgrades mapping table wherein, make the WiMAX Access Network to select correct physical link to send the grouped data of this WiFi terminal according to amended mapping relations, thereby guarantee that the WiFi terminal moves to the process in another WiMAX terminal field from a WiMAX terminal field, its business is not interrupted.This second broadcast can be ARP request broadcast or IP layer broadcast.Wherein, the source address of this second broadcast is the address of this WiFi terminal that inserts again.Such as, second broadcast that WiMAX terminal 2 is sent is an ARP request broadcast, and then the source MAC of this message is this WiFi terminal MAC Address, and source IP address is the IP address of this WiFi terminal, target MAC (Media Access Control) address is complete 0, and purpose IP address is address arbitrarily.And for example second broadcast that sent of WiMAX terminal 2 is an IP layer broadcast, and then this message purpose IP address is a broadcast address, and source IP address is this WiFi IP address of terminal.Wherein, the IP address of this WiFi terminal can be obtained by standard RARP request by WiFi access point 3 or WiMAX terminal 2.
The WiMAX Access Network is according to this second broadcast, revises corresponding mapping relations in the mapping table of WiMAX Access Network, and the WiMAX Access Network of this WiFi terminal correspondence in these mapping relations link No. of eating dishes without rice or wine is revised as No. 2 by original No. 1.And in the corresponding physical link, transmit the grouping of this WiFi terminal that inserts again according to amended mapping relations.After renewal was finished, WiMAX terminal 2 and WiMAX Access Network transmitted the grouping of this WiFi terminal that inserts again respectively in the corresponding physical link according to the mapping relations after upgrading.Being the WiMAX Access Network gives WiMAX terminal 2 by the link 2 of eating dishes without rice or wine with transmitted in packets, and WiMAX terminal 2 is given WiFi access point 3 by port 3 with this transmitted in packets, by WiFi access point 3 the most at last transmitted in packets to this WiFi terminal.
The transmission method of WiFi end packet as shown in Figure 3 in the third embodiment of the invention wireless access network, after the WiFi terminal inserts the WiMAX Access Network by WiFi access point and WiMAX terminal, when the WiMAX Access Network receives the downlink grouped of this WiFi terminal, enter step 310, the WiMAX Access Network sends to the WiMAX terminal according to the mapping table of WiFi terminal and physical link with downlink grouped from the corresponding physical link.Wherein, the mapping relations in this mapping table can be the mapping between the mac-layer address of WiFi terminal and the WiMAX terminal prot number, and are as shown in table 1; Or, the mapping between the IP address of WiFi terminal and the WiMAX terminal prot number, as shown in table 2.This mapping table can be transmitted with the layer two MAC on the WiMAX terminal or the three layers of IP routing table merges, thereby does not take space unnecessary on the WiMAX terminal.
Then enter step 320, the WiMAX terminal further according to the mapping table of WiFi terminal and physical link, sends to the WiFi access point with this downlink grouped after receiving downlink grouped from the WiMAX Access Network from the corresponding physical link.Mapping relations in the WiMAX Access Network mapping table are eat dishes without rice or wine the mapping between the link No. of the IP address of WiFi terminal and WiMAX Access Network, and are as shown in table 3.This mapping table can merge with three layers of IP routing table on the WiMAX Access Network equally, avoids taking space unnecessary on the WiMAX Access Network.
Then enter step 330, the WiFi access point sends to corresponding WiFi terminal with this downlink grouped, thereby finishes the transmission of the downlink grouped of this WiFi terminal after receiving downlink grouped from the WiMAX terminal.As seen by preserve the mapping table of WiFi terminal and physical link respectively in WiMAX Access Network and WiMAX terminal, can correctly WiFi terminal downlink grouped be sent to this WiFi terminal from the WiMAX Access Network, thereby make the WiMAX technology can correctly combine with the WiFi technology, make when the WiFi terminal moves freely in the WiMAX Access Network, can not interrupt its business, still can keep its professional continuity.
What introduce above is descending, comparatively simple when transmitting for the upstream packet of sending from the WiFi terminal, as long as upstream packet is dealt into the WiFi access point of current service from the WiFi terminal, again by to send to the WiMAX Access Network just passable with the unique WiMAX terminal that is connected of this WiFi access point.
The changing method of WiFi terminal as shown in Figure 4 in the four embodiment of the invention wireless access network, in the process that the WiFi free terminal moves, need enter step 401 when source WiFi access point switches to purpose WiFi access point, the WiFi terminal is initiated heavy bind request to purpose WiFi access point.
Then enter step 402, purpose WiFi access point is finished the access of this WiFi terminal according to this heavy bind request, and sends first broadcast to its higher level WiMAX terminal.This first broadcast can be one of MAC layer broadcast, ARP request broadcast or IP layer broadcast.Wherein, the source address of this first broadcast is the address of the WiFi terminal of this new access.
Then insert step 403, after the WiMAX terminal receives this first broadcast, judge the mapping relations that whether have this WiFi terminal in the mapping table of this WiMAX terminal according to this first broadcast, and whether this WiFi terminal corresponding port number changes, if exist the mapping relations of this WiFi terminal and this WiFi terminal corresponding port number to change in the mapping table of this WiMAX terminal, promptly satisfy condition 1, then enter step 404, otherwise, if there are not the mapping relations of this WiFi terminal in the mapping table of this WiMAX terminal, promptly satisfy condition 2, then enter step 405.Wherein, the mapping table that this WiMAX terminal comprises is the mapping table of WiFi terminal and physical link, and the mapping relations in this mapping table can be the mapping between the mac-layer address of WiFi terminal and the WiMAX terminal prot number, and are as shown in table 1; Or, the mapping between the IP address of WiFi terminal and the WiMAX terminal prot number, as shown in table 2.Because this mapping table can be transmitted with the layer two MAC on the WiMAX terminal or the three layers of IP routing table merges, therefore do not take space unnecessary on the WiMAX terminal
In step 404, this WiMAX terminal is revised the mapping relations of this WiFi terminal correspondence according to the source address in first broadcast in its mapping table, promptly revise the port numbers of the WiMAX terminal of this WiFi terminal correspondence in these mapping relations.After modification was finished, this WiMAX terminal was transmitted the grouping of this WiFi terminal that inserts again in the corresponding physical link according to amended mapping relations.Thereby guaranteed this WiFi terminal in the process that moves freely, the continuity that it is professional.
In the mapping table of this WiMAX terminal, do not exist under the situation of mapping relations of this WiFi terminal, enter step 405, this WiMAX terminal is according to the source address in first broadcast and receive the port numbers of this message, the mapping relations of newly-increased this WiFi terminal in the mapping table of WiMAX terminal.
Then enter step 406, the WiMAX terminal sends second broadcast to the WiMAX Access Network.This second broadcast can be ARP request broadcast or IP layer broadcast.Wherein, the source address of this second broadcast is the address of this WiFi terminal that inserts again.
Then enter step 407, after the WiMAX Access Network receives this second broadcast, according to the mapping relations of this WiFi terminal in the mapping table of the source address modification WiMAX Access Network in this message, these mapping relations are eat dishes without rice or wine the mapping between the link No. of the IP address of WiFi terminal and WiMAX Access Network.This mapping table can merge with three layers of IP routing table on the WiMAX Access Network equally, thereby avoids taking space unnecessary on the WiMAX Access Network.After modification was finished, the WiMAX Access Network transmitted the grouping of this WiFi terminal in the corresponding physical link according to amended mapping relations.Thereby guaranteed this WiFi terminal in the process of switching, the continuity that it is professional.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (10)
1. a wireless access network is characterized in that, comprises micro-wave access to global intercommunication WiMAX Access Network and a plurality of WiMAX terminal, and each described WiMAX terminal is connected with at least one Wireless Fidelity WiFi access point;
The WiFi terminal inserts described WiMAX Access Network by described WiFi access point and described WiMAX terminal;
Described WiMAX Access Network and described WiMAX terminal comprise the mapping table of described WiFi terminal and physical link respectively, and the grouping with described WiFi terminal sends from the corresponding physical link according to described mapping table;
Described WiFi access point triggers WiMAX terminal renewal described mapping table wherein by first broadcast after finishing access according to the heavy bind request of described WiFi terminal.
2. wireless access network according to claim 1, it is characterized in that, described WiMAX terminal is according to described first broadcast, in the mapping table of described WiMAX terminal, revise or newly-increased corresponding mapping relations, and in the corresponding physical link, transmit the grouping of the WiFi terminal that inserts according to described heavy bind request according to the mapping relations of revising or increase newly.
3. wireless access network according to claim 2 is characterized in that, described WiMAX terminal after the newly-increased mapping relations, triggers WiMAX Access Network renewal described mapping table wherein by second broadcast in described mapping table.
4. wireless access network according to claim 3, it is characterized in that, described WiMAX Access Network is according to described second broadcast, revise mapping relations corresponding in the mapping table of described WiMAX Access Network, and in the corresponding physical link, transmit the grouping of the WiFi terminal of described heavy bind request access according to amended mapping relations.
5. according to each described wireless access network in the claim 1 to 4, it is characterized in that described first broadcast is one of following:
MAC layer broadcast, arp request broadcast or IP layer broadcast;
The source address of described first broadcast is the address of the WiFi terminal of described heavy bind request access.
6. according to claim 3 or 4 described wireless access networks, it is characterized in that described second broadcast is one of following:
Arp request broadcast or IP layer broadcast;
The source address of described second broadcast is the address of the WiFi terminal of described heavy bind request access.
7. according to each described wireless access network in the claim 1 to 4, it is characterized in that the mapping relations in the described WiMAX terminal mapping table are:
Mapping between the MAC layer address of described WiFi terminal and the described WiMAX terminal prot number; Or,
Mapping between the IP address of described WiFi terminal and the described WiMAX terminal prot number.
8. according to each described wireless access network in the claim 1 to 4, it is characterized in that the mapping relations in the described WiMAX Access Network mapping table are eat dishes without rice or wine the mapping between the link No. of the IP address of described WiFi terminal and described WiMAX Access Network.
9. the changing method of WiFi terminal in the wireless access network is characterized in that, comprises following steps:
The WiFi access point sends first broadcast to the WiMAX terminal after finishing access according to the heavy bind request of described WiFi terminal;
Described WiMAX terminal is according to first broadcast that receives, in the mapping table of described WiMAX terminal, revise or increase newly the mapping relations of described WiFi terminal, and in the corresponding physical link, transmit the grouping of this WiFi terminal according to the mapping relations of revising or increase newly.
10. the changing method of WiFi terminal is characterized in that in the wireless access network according to claim 9, also comprises following steps:
Described WiMAX terminal after the newly-increased mapping relations, sends second broadcast to the WiMAX Access Network in its mapping table;
Described WiMAX Access Network is according to described second broadcast that receives, revise the mapping relations of WiFi terminal correspondence described in the mapping table of described WiMAX Access Network, and in the corresponding physical link, transmit the grouping of this WiFi terminal according to amended mapping relations.
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| WO2010099655A1 (en) * | 2009-03-03 | 2010-09-10 | 上海贝尔股份有限公司 | Method and apparatus for wimax subscriber station accessing wimax system |
| WO2010118570A1 (en) | 2009-04-15 | 2010-10-21 | 华为技术有限公司 | Wimax and wifi networks converging system and apparatus |
| CN101888631B (en) * | 2009-05-11 | 2014-02-19 | 华为终端有限公司 | Method, system and equipment for switching access network |
| CN101730040B (en) * | 2009-06-29 | 2012-09-26 | 中兴通讯股份有限公司 | Method for cross-network switching session binding and WiMAX connection service network |
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