CN104754521A - Message transmitting method, wireless access point, wireless controller and system - Google Patents
Message transmitting method, wireless access point, wireless controller and system Download PDFInfo
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Abstract
The embodiment of the invention provides a message transmitting method, a wireless access point, a wireless controller and a system. When the first duplicated message received by an AP (access point) carries with information of Radio ID bitmap, generating a second duplicated message according to the rule of Radio ID bitmap (R bit map), wherein the first duplicated message is generated according to number of alan station point; analyzing the information of Radio ID bitmap carried by the first duplicated message, and obtaining the Radio ID; according to the AP end mapping table, searching a basic service unit logo BSS ID corresponding to the Radio ID; according to the basic service unit logo BSS ID, structuring a wireless frame, and transferring the second duplicated message. The message transmitting method improves the broadcasting and multicast message control in a smart distribution system, reduces the message duplicating cost and improves the utilization rate of the network bandwidth.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of message forwarding method WAP (wireless access point), wireless controller and system.
Background technology
WLAN (Wireless Local Area Networks, WLAN (wireless local area network)) deployment usually adopt centralized management, utilize AC (Acess controler, wireless controller) and AP (Acesss point, WAP (wireless access point)) form the thin AP network architecture, AP utilizes CAPWAP (Control And Provisioning ofWireless Access Points) agreement to access AC, and is provided the centralized management of WLAN by AC.AP is by radio frequency mouth broadcast WLAN signal, STA (station, wireless terminals operational station, as PDA, wireless notebook) access WLAN by transmission 802.11 frame to the Radio (radio frequency mouth) of AP, and deliver to AC by AP by CAPWAP tunnel and focus on.As shown in Figure 1, after STA accesses WLAN, the data message of STA will send to AP, and then send to AC by AP through CAPWAP tunnel encapsulation, carry out CAPWAP decapsulation and be transmitted to Internet again after AC receives.Equally, the message of Internet first will send to AC, issues AP again and carries out CAPWAP decapsulation, and then send to STA by CAPWAP tunnel after being encapsulated, and STA so just can be allowed to use network smoothly.
In WLAN service application, broadcast and multicast message will account for certain ratio, and especially, when STA carries out video request program, multi-cast business data will become main flow in network.When STA1 carries out video request program, STA1 will send IGMP (Internet Group Management Protocol the Internet Group Management Protocol) and pass through AC through AP, AC by structure Multicast Routing and and multicast server set up Multicast Routing.The multicast traffic stream of such video on demand service device will send to AC and encapsulate to AP through CAPWAP, finally send to STA1.When STA2 also carries out video request program, set up Multicast Routing equally by IGMP agreement and AC, multicast traffic stream will carry out copying and sending to STA2 on AC.
Because WLAN is based on Radio application, STA is always associated with on specific Radio.According to the standard definition of CAPWAP agreement, the Radio that message will be specified belonging to STA on AC, then carries out the encapsulation of message based on Radio and WLAN and sends to AP.As shown in Figure 2, send to the message of STA that the RID field at CAPWAP message head is inserted affiliated Radio interface.
Simultaneously, AP equipment can have multiple Radio interface, in WLAN deployment, usually by a SSID (service set identifier, service set identifier, the i.e. title of WLAN) be mapped to multiple Radio under, allow STA access same SSID and carry out load balancing between different Radio.The method is for being applicable when the radio quantity being in active state is less than or equal to wlan website quantity, needs copy for each Radio carries out a message and are transmitted to same AP through CAPWAP tunnel by AC, wherein, the radio id of every part of message is different, but there is identical wlan id bitmap.
But when multiple STA is when carrying out video request program, under each STA may be associated with different Radio, when the radio now accessed is more, still adopt said method when the radio quantity being in active state is greater than wlan website quantity, will the serious waste of the excessive and downlink bandwidth of the multicast replication pressure of AC equipment be caused.
For above problem, usually adopt following solution:
Method one
AC controls message for multicast generate multicast forward table and be handed down to AP, discard RID field when CAPWAP message forwards, multicast message is directly transmitted to AP, AP carries out copying of multicast message.
The method can only processing multicast message, cannot control broadcasting packet; Set up multicast forward table due to needs and controlled message (UDP port number is 5246) by CAPWAP simultaneously and be handed down to AP equipment, sequence problem is there is, by the problem causing video request program slow through the forwarding of CAPWAP data message (UDP port number is 5247) with multicast data message.
Method two
The VLAN (Virtual Local Area Network VLAN) directly mapped by WLAN when WLAN configures or VLAN bunch are handed down to AP generating forward list item, when AC forwarding multicasting broadcasting packet, vlan information is filled in message and sends to AP, find corresponding WLAN information by AP according to vlan information and send in eating dishes without rice or wine.
The method can carry out the process of multicast and broadcasting packet, and is set in advance on AP due to VLAN and WLAN mapping table, effectively can solve sequence problem; But this requires that AP inquires about VLAN and WLAN mapping table and forwarding when message repeating, and in the thin AP network architecture, wish that the theory of AP equipment more " thin " is not inconsistent, need the complexity increasing AP software.
Summary of the invention
The embodiment provides a kind of message forwarding method, comprising:
When AP reports the radio quantity being in active state to be greater than the wlan website quantity of AP access, when AC carries out CAPWAP encapsulation to message, fill Radio ID bitmap information;
Copy described message according to wlan website quantity, obtain first copy packet;
Hold mapping table that first copy packet is forwarded to AP according to AC.
According to above-mentioned message forwarding method, AC holds mapping table, comprising: set up in advance and be in the Radio ID of the Radio of active state and the mapping relations of corresponding message forwarding path.
According to above-mentioned message forwarding method, carry the message of Radio ID bitmap information, comprising:
R flag bit, for carrying Radio ID bitmap information field in identification message;
R message information section, for carrying Radio ID bitmap information, wherein, described Radio ID bitmap message reflection is in the Radio ID of the Radio of active state and is in the radio quantity of active state.
According to above-mentioned message forwarding method, comprising: hold mapping table write to carry Radio ID bitmap information according to AC.
According to above-mentioned message forwarding method, also comprise:
When AP reports the radio quantity being in active state to be less than or equal to the wlan website quantity of AP access, AC carries out CAPWAP encapsulation to message and fills WLAN ID bitmap information;
Copy described message according to the radio quantity being in active state, obtain the 3rd batch of copy packet;
Mapping table is held by the 3rd reply message repeating processed to AP according to AC.
The present embodiment also provides a kind of message forwarding method, comprising:
When first copy packet that AP receives carries Radio ID bitmap information, according to Radio IDbitmap (R bitmap) generate rule second batch copy packet; Wherein, first copy packet generates according to wlan website quantity;
Resolve the Radio ID bitmap information of carrying in first copy packet, obtain Radio ID;
Mapping table is held to search basic service element identifier (element ID) BSSID corresponding to described Radio ID according to described AP;
Construct radio frames according to described basic service element identifier (element ID) BSSID, forward second batch copy packet.
According to above-mentioned message forwarding method, comprising:
Receive first copy packet;
AP copies the message of first copy packet respectively according to the radio quantity being in active state
Generate second batch copy packet.
According to above-mentioned message forwarding method, AP holds mapping table, comprising: that sets up in advance is in the Radio ID of the Radio of active state and the mapping relations of corresponding BSSID.
According to above-mentioned message forwarding method, also comprise:
When the 3rd batch of copy packet that AP receives carries WLAN ID bitmap information, according to WLANID bitmap (W bitmap) generate rule the 4th batch of copy packet; Wherein, the 3rd batch of copy packet generates according to the quantity being in active state radio;
Resolve the WLAN ID bitmap information of carrying in the 3rd batch of copy packet, obtain WLAN ID;
Mapping table is held to search basic service element identifier (element ID) BSSID corresponding to described WLAN ID according to described AP;
Construct radio frames according to described basic service element identifier (element ID) BSSID, forward the 4th batch of copy packet.
According to above-mentioned message forwarding method, comprising:
Receive the 3rd batch of copy packet;
AP copies generation the 4th batch of copy packet to the message of the 3rd batch of copy packet respectively according to wlan website quantity.
According to a further aspect in the invention, a kind of AC is also provided, comprises: the first package module:, the first replication module and the first forwarding module, wherein,
First package module: it is for reporting the radio quantity being in active state to be greater than the wlan website quantity of AP access during as AP, fills Radio ID bitmap information when AC carries out CAPWAP encapsulation to message;
First replication module: it, for copying described message according to wlan website quantity, obtains first copy packet;
First forwarding module: it is for holding mapping table that first copy packet is forwarded to AP according to AC.
According to a further aspect in the invention, above-mentioned AC holds mapping table, comprising: the mapping relations for the Radio ID with corresponding message forwarding path that record the Radio being in active state that AC sets up in advance.
According to a further aspect in the invention, above-mentioned first package module, comprising:
R flag bit unit: it is for carrying Radio ID bitmap information field in identification message;
R message information segment unit: it is for for carrying Radio ID bitmap information, wherein, described RadioID bitmap message reflection is in the Radio ID of the Radio of active state and is in the radio quantity of active state.
According to a further aspect in the invention, above-mentioned first package module, comprising:
Writing unit: it carries Radio ID bitmap information for holding mapping table write according to AC.
According to a further aspect in the invention, above-mentioned AC, also comprises:
3rd package module: it is for reporting the radio quantity being in active state to be less than or equal to the wlan website quantity of AP access during as AP, AC carries out CAPWAP encapsulation to message and fills WLAN ID bitmap information;
3rd replication module: it obtains the 3rd batch of copy packet for copying described message according to the radio quantity being in active state;
3rd forwarding module: it is for holding mapping table by the 3rd reply message repeating processed to AP according to AC.
According to a further aspect in the invention, a kind of AP is also provided, comprises: the second replication module, the second parsing module, second search module and the second forwarding module, wherein,
Second replication module: when it carries Radio ID bitmap information for first copy packet received as AP, according to Radio ID bitmap (R bitmap) generate rule second batch copy packet; Wherein, first copy packet generates according to wlan website quantity;
Second parsing module: it, for resolving the Radio ID bitmap information of carrying in first copy packet, obtains described Radio ID;
Second searches module: it is for holding mapping table to search basic service element identifier (element ID) BSSID corresponding to described Radio ID according to described AP;
Second forwarding module: it, for constructing radio frames according to described basic service element identifier (element ID) BSSID, forwards second batch copy packet.
According to a further aspect in the invention, above-mentioned second replication module, comprising:
Second receiving unit: it is for receiving first copy packet;
Second replication component: it copies the message of first copy packet according to the radio quantity being in active state respectively for making AP, generates second batch copy packet.
According to a further aspect in the invention, above-mentioned AP holds mapping table, and it is in the Radio ID of the Radio of active state and the mapping relations of corresponding basic service element identifier (element ID) BSSID for setting up in advance.
According to a further aspect in the invention, above-mentioned AP, also comprises:
4th replication module: when it carries WLAN ID bitmap information for the 3rd batch of copy packet received as AP, according to WLAN ID bitmap (W bitmap) generate rule the 4th batch of copy packet; Wherein, the 3rd batch of copy packet generates according to the quantity being in active state radio;
4th parsing module: it is for resolving the WLAN ID bitmap information of carrying in the 3rd batch of copy packet, obtains WLAN ID;
4th searches module: hold mapping table to search basic service element identifier (element ID) BSSID corresponding to described WLAN ID according to described AP;
4th forwarding module: construct radio frames according to described basic service element identifier (element ID) BSSID, forward the 4th batch of copy packet.
According to a further aspect in the invention, above-mentioned 4th replication module, comprising:
4th receiving unit: it is for receiving the 3rd batch of copy packet;
4th replication component: it copies the message of the 3rd batch of copy packet according to wlan website quantity respectively for making AP, generates the 4th batch of copy packet.
According to a further aspect in the invention, a kind of message forwarding system is also provided, comprises: above-mentioned AC and above-mentioned AP.
The technical scheme provided as can be seen from the embodiment of the invention described above, when the embodiment of the present invention carries Radio ID bitmap information by first copy packet received as AP, according to Radio ID bitmap (R bitmap) generate rule second batch copy packet; Wherein, first copy packet generates according to wlan website quantity; Resolve the Radio ID bitmap information of carrying in first copy packet, obtain Radio ID; Mapping table is held to search basic service element identifier (element ID) BSSID corresponding to described Radio ID according to described AP; Construct radio frames according to described basic service element identifier (element ID) BSSID, forward second batch copy packet; Method of the present invention improves carries out broadcast and multicast message control in intelligence subsystem, reducing message replication overhead and improves network bandwidth utilization factor, effectively carrying out the control of multicast and broadcast when not needing increase AP equipment complexity.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the deployment of WLAN (Wireless Local Area Networks);
Fig. 2 is CAPWAP message protocol format in prior art;
The AC of a kind of message forwarding method that Fig. 3 provides for the embodiment of the present invention one holds process chart;
Fig. 4 is the form of Wireless Specific Information message segment;
Fig. 5 is the protocol format after the Radio ID bitmap field increased;
Fig. 6 is the form of Radio ID bitmap message segment;
Fig. 7 AC holds mapping table;
The AP of a kind of message forwarding method that Fig. 8 provides for the embodiment of the present invention one holds process chart;
The processing module figure of a kind of message forwarding system that Fig. 9 provides for the embodiment of the present invention two.
Embodiment
For ease of the understanding to the embodiment of the present invention, be further explained explanation below in conjunction with accompanying drawing for several specific embodiment, and each embodiment does not form the restriction to the embodiment of the present invention.
Embodiment one
The AC that this embodiment offers a kind of message forwarding method holds handling process as shown in Figure 3, comprises following treatment step:
According to the definition of CAPWAP agreement, multicast or broadcasting data messages are when carrying out CAPWAP encapsulation, according to VLAN ID and the CAPWAP tunnel interface lookup WLAN ID to the website of the WLAN of access, the WLAN ID of the website of WLAN is write as WLAN ID bitmap information, filled when AC carries out CAPWAP encapsulation to message.As shown in Figure 2, will fill RID field and W mark and Wireless Specific Information information.What Rid field represented is carry Wireless Specific Information information in Radio id, w mark expression message.
Wherein, that Wireless Specific Information fills is wlan id bitmap, and as shown in Figure 4, the highest significant position of WLAN ID bitmap represents WLAN 16, the 0th namely in Fig. 4; And least significant bit represents WLAN 1, i.e. the 15th of Fig. 4.If multiple WLAN is mapped to identical Radio and same VLAN, then broadcast group broadcast message will carry out multicast and broadcast control according to WLAN ID bitmap, reduce the message traffic of CAPWAP tunnel.
Step 11, when AP reports the radio quantity being in active state to be greater than the wlan website quantity of AP access, when AC carries out CAPWAP encapsulation to message, fill Radio ID bitmap information;
The described message carrying Radio ID bitmap information, as shown in Figure 5, comprising:
R flag bit, for carrying Radio ID bitmap information field in identification message, represents in message containing Radio ID bitmap information.
R message information section, for carrying Radio ID bitmap information, wherein, described Radio ID bitmap message reflection is in the Radio ID of the Radio of active state and is in the radio quantity of active state.
In actual deployment, normally configure a WLAN be mapped in multiple Radio interface, to allow STA access same SSID and carry out load balancing between different Radio.Here CAPWAP protocol headers can be expanded, the basis of Fig. 2 increases a R flag bit, for carrying Radio ID bitmap information field in identification message, R flag bit utilizes existing flags field to expand, increase a R message information section can selecting to insert simultaneously, for carrying Radio ID bitmap information, when AP reports the radio quantity being in active state to be greater than the wlan website quantity of AP access, AC fills Radio ID bitmap information when carrying out CAPWAP encapsulation to message, wherein, Radio ID bitmap message reflection is in the Radio ID of the Radio of active state and is in the radio quantity of active state, concrete protocol format as shown in Figure 6.
Wherein in Fig. 5, Radio Special Information is the R message information section can selecting to insert, for carrying Radio ID bitmap information, its form as shown in Figure 6, highest significant position retains, because the scope of CAPWAP agreement Radio ID is 1 to 31, therefore define only 31 here, least significant bit represents Radio 1.
Radio ID bitmap information is then hold mapping table write to carry Radio ID bitmap information according to AC, and AC holds mapping table to comprise: set up in advance and be in the Radio ID of the Radio of active state and the mapping relations of corresponding message forwarding path.At AC end, AC can create a tunnel interface for coupled AP, and WLAN ID, VLAN ID, CAPWAP tunnel interface and the Radio ID that is in active state Radio are built an AC end mapping table by AC, as shown in Figure 7.According to VLAN ID and CAPWAP tunnel interface lookup to the Radio ID of Radio being in active state, Radio ID also can reflect the quantity of the Radio being in active state simultaneously.The Radio ID being in the Radio of active state is write as Radio ID bitmap information, also filled when AC carries out CAPWAP encapsulation to message.
When concrete AP reports the radio quantity being in active state to be greater than the wlan website quantity of AP access, the radio quantity being in active state be obtained, particularly, the radio quantity being in active state that counter records AP reports is set.AC configures wlan, AC specifies when configuring the AP of wlan website correspondence application, the wlan website quantity of AP access can obtain when configuring, when AP reports the radio quantity being in active state to be greater than the wlan website quantity of AP access, when AC carries out CAPWAP encapsulation to message, fill Radio ID bitmap information;
In addition, when AP reports the radio quantity being in active state to be less than or equal to the wlan website quantity of AP access, AC carries out CAPWAP encapsulation to message and fills WLAN ID bitmap information;
Copy described message according to the radio quantity being in active state, obtain the 3rd batch of copy packet;
Particularly, when AP reports the radio quantity being in active state to be less than or equal to the wlan website quantity of AP access, AC sends a message to each radio, and wherein, the radio id of every part of message is different, but there is identical wlan id bitmap; Do not carry the message of Radio ID bitmap information during encapsulated message, only carry wlan ID bitmap information, the message number making AC copy like this is minimum.
Mapping table is held by the 3rd reply message repeating processed to AP according to AC.
Step 12, copy described message according to wlan website quantity, obtain first copy packet;
The message of filling Radio ID bitmap information when first copy packet is and carries out CAPWAP encapsulation with AC to message is basic message, basic message is copied again according to wlan website quantity, the batch message that generation and wlan website quantity match is the generation message equal with wlan website quantity in the present embodiment is first copy packet.
In the present embodiment, hold at AC, determine according to VLAN ID the AP that first copy packet will send, suppose that message is sent to AP1, the radio being in active state that now AP1 carries is 3, and the website of wlan is 2, message copies two parts as first copy packet according to wlan website quantity on AC, and first part is filled in wlan-id be the binary code of 1, radio id bitmap is 111, second part of wlan-id is the binary code of 2, radio idbitmap is 111.
Step 13, according to AC hold mapping table first copy packet is forwarded to AP.
AC hold mapping table be AC set up in advance be in the Radio ID of the Radio of active state and the mapping relations of corresponding message forwarding path.At AC end, AC can create a tunnel interface for coupled AP, and WLAN ID, VLAN ID, CAPWAP tunnel interface and the Radio ID that is in active state Radio are built an AC end mapping table by AC, as shown in Figure 7.
The AP that the present embodiment additionally provides a kind of message forwarding method holds handling process as shown in Figure 8, comprises following treatment step:
Step 21, when AP receive first copy packet carry Radio ID bitmap information time, according to Radio ID bitmap (R bitmap) generate rule second batch copy packet; Wherein, first copy packet generates according to wlan website quantity;
According to Radio ID bitmap (R bitmap) generate rule second batch copy packet, comprising:
Receive first copy packet;
AP copies the message of first copy packet respectively according to the radio quantity being in active state, generates second batch copy packet.
Particularly, then above-mentioned example, message replicates two parts according to wlan website quantity on AC, time first part of message gives AP, radio id bitmap is parsed the corresponding ID being in the radio of active state and is respectively radio 1, radio 2 and radio 3 by AP, then copies three parts of messages according to the radio quantity being in active state;
Time second part of message gives AP, radio id bitmap is parsed the corresponding ID being in the radio of active state and is respectively radio 1, radio 2 and radio 3 by AP, then copies three parts of messages again according to the radio quantity being in active state;
Through to first copy packet, according to Radio ID bitmap (R bitmap) generate rule second batch copy packet, obtain second batch copy packet and amount to six parts.
Step 22, resolve the Radio ID bitmap information of carrying in first copy packet, obtain RadioID;
Step 23, mapping table is held to search basic service element identifier (element ID) BSSID corresponding to described Radio ID according to described AP;
Step 24, construct radio frames according to described basic service element identifier (element ID) BSSID, forward second batch copy packet.
After AP receives the message copied according to wlan website quantity, resolve the Radio ID bitmap information of carrying in first copy packet, Radio ID bitmap packets of information contains the radio id information being in active state, and also reflection is in the radio quantity of active state.Resolve the Radio IDbitmap information of carrying in first copy packet, obtain described Radio ID, mapping table is held to search basic service element identifier (element ID) BSSID corresponding to described Radio ID according to described AP, construct radio frames according to described basic service element identifier (element ID) BSSID, forward second batch copy packet.
AP holds mapping table, comprising: the mapping relations of the Radio ID being in the Radio of active state set up in advance and corresponding basic service element identifier (element ID) BSSID.AP is when adding WLAN, create AP mapping table, WLAN ID, basic service element identifier (element ID) BSSID and the Radio ID that is in active state Radio are built an AP and hold mapping table by AP, AP mapping table comprises the RadioID of the Radio being in active state and the mapping relations of corresponding basic service element identifier (element ID) BSSID, also comprise the Radio ID of the Radio being in active state and corresponding basic service element identifier (element ID) BSSID simultaneously, and the mapping relations of the WLAN ID of correspondence.
Find corresponding wlan ID according to radio ID, the basic service element identifier (element ID) BSSID that this wlan ID is corresponding, i.e. the MAC Address of wlan website, construct radio frames according to basic service element identifier (element ID) BSSID, forward second batch copy packet.
In addition, when the 3rd batch of copy packet that AP receives carries WLAN ID bitmap information, according to WLAN ID bitmap (W bitmap) generate rule the 4th batch of copy packet; Wherein, the 3rd batch of copy packet generates according to the quantity being in active state radio;
Resolve the WLAN ID bitmap information of carrying in the 3rd batch of copy packet, obtain WLAN ID;
Mapping table is held to search basic service element identifier (element ID) BSSID corresponding to described WLAN ID according to described AP;
Construct radio frames according to described basic service element identifier (element ID) BSSID, forward the 4th batch of copy packet.
According to WLAN ID bitmap (W bitmap) generate rule the 4th batch of copy packet, comprising:
Receive the 3rd batch of copy packet;
AP copies generation the 4th batch of copy packet to the message of the 3rd batch of copy packet respectively according to wlan website quantity.
After AP receives message, obtain radio id, and the wlan id bitmap information that analytic message carries, obtain the website number of the wlan of AP access, more respectively generation the 4th batch of copy packet is copied respectively to the every part of message received according to wlan website number again.
Radio quantity AP such as, being in active state is 3, and wlan website number is 4, and two wlan are mapped to all radio.So according to Wlan ID bitmap (W bitmap) regular copy packet, specifically comprise: AC sends a message to each radio, namely need to copy three parts of messages, the radio id of every part of message is different, but there is identical wlan id bitmap.After message arrives AP, AP directly obtains radio id, then the analytic message wlan id bitmap information of carrying, wlan id bitmap information also reflects the website number of the wlan that AP accesses, according to wlan id bitmap information, respectively for duplicated 3 parts of messages, copy 4 parts of messages separately again, namely amount to 12 parts of messages.
When the radio quantity being in active state is greater than wlan website quantity, according to Radio ID bitmap (R bitmap) regular copy packet, such sweetly disposition, message number can be saved, the radio quantity being such as in active state as AP is 16, wlan website number is 2, now, the radio quantity being in active state is greater than wlan website quantity, according to method of the present invention, described message is copied according to wlan website quantity, obtain first copy packet 2 parts, copying of 2 parts of messages has only been needed at AC end, save the quantity of message, when first copy packet that AP receives carries Radio ID bitmap information, according to Radio ID bitmap (R bitmap) generate rule second batch copy packet 32 parts, if but still according to Wlan ID bitmap (W bitmap) regular copy packet, then need to copy 16 parts of messages on AC, consume message resource.
Embodiment two
This embodiment offers a kind of message forwarding system, its specific implementation structure as shown in Figure 9, specifically can comprise a kind of AP and a kind of AC; Wherein,
A kind of AC, comprising: the first package module 11, first replication module 12 and the first forwarding module 13.
First package module 11: it is for reporting the radio quantity being in active state to be greater than the wlan website quantity of AP access during as AP, fills Radio ID bitmap information when AC carries out CAPWAP encapsulation to message;
First replication module 12: it, for copying described message according to wlan website quantity, obtains first copy packet;
First forwarding module 13: it is for holding mapping table that first copy packet is forwarded to AP according to AC.
AC holds mapping table, comprising: the mapping relations for the RadioID with corresponding message forwarding path that record the Radio being in active state that AC sets up in advance.
Wherein, the first package module 11: comprising:
R flag bit unit 111: it is for carrying Radio ID bitmap information field in identification message;
R message information segment unit 112: it is for for carrying Radio ID bitmap information, wherein, described Radio ID bitmap message reflection is in the Radio ID of the Radio of active state and is in the radio quantity of active state.
First package module 11: also comprise:
Counting unit 113: it is for recording the radio quantity being in active state.
First package module 11: also comprise:
Writing unit 114: it carries Radio ID bitmap information for holding mapping table write according to AC.
A kind of AC, also comprises:
3rd package module 14: it is for reporting the radio quantity being in active state to be less than or equal to the wlan website quantity of AP access during as AP, AC carries out CAPWAP encapsulation to message and fills WLAN ID bitmap information;
3rd replication module 15: it obtains the 3rd batch of copy packet for copying described message according to the radio quantity being in active state;
3rd forwarding module 16: it is for holding mapping table by the 3rd reply message repeating processed to AP according to AC.
A kind of AP, comprising: the second replication module 21, second parsing module 22, second searches module 23 and the second forwarding module 24, wherein,
Second replication module 21: when it carries Radio ID bitmap information for first copy packet received as AP, according to Radio ID bitmap (R bitmap) generate rule second batch copy packet; Wherein, first copy packet generates according to wlan website quantity;
Second parsing module 22: it, for resolving the Radio ID bitmap information of carrying in first copy packet, obtains described Radio ID;
Second searches module 23: it is for holding mapping table to search basic service element identifier (element ID) BSSID corresponding to described Radio ID according to described AP;
Second forwarding module 24: it, for constructing radio frames according to described basic service element identifier (element ID) BSSID, forwards second batch copy packet.
Wherein, the second replication module 21, comprising:
Second receiving unit 211: it is for receiving first copy packet;
Second replication component 212: it copies the message of first copy packet according to the radio quantity being in active state respectively for making AP, generates second batch copy packet.
AP holds mapping table, and it is in the Radio ID of the Radio of active state and the mapping relations of corresponding basic service element identifier (element ID) BSSID for setting up in advance.
A kind of AP, also comprises:
4th replication module 25: when it carries WLAN IDbitmap information for the 3rd batch of copy packet received as AP, according to WLAN ID bitmap (W bitmap) generate rule the 4th batch of copy packet; Wherein, the 3rd batch of copy packet generates according to the quantity being in active state radio;
4th parsing module 26: it is for resolving the WLAN ID bitmap information of carrying in the 3rd batch of copy packet, obtains WLAN ID;
4th searches module 27: hold mapping table to search basic service element identifier (element ID) BSSID corresponding to described WLAN ID according to described AP;
4th forwarding module 28: construct radio frames according to described basic service element identifier (element ID) BSSID, forward the 4th batch of copy packet.
4th replication module 25, comprising:
4th receiving unit 251: it is for receiving the 3rd batch of copy packet;
4th replication component 252: it copies the message of the 3rd batch of copy packet according to wlan website quantity respectively for making AP, generates the 4th batch of copy packet.
Carry out the detailed process of message repeating with the device of the embodiment of the present invention and preceding method embodiment similar, repeat no more herein.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the present invention or embodiment.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for device or system embodiment, because it is substantially similar to embodiment of the method, so describe fairly simple, relevant part illustrates see the part of embodiment of the method.Apparatus and system embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (21)
1. a message forwarding method, is characterized in that, comprising:
When AP reports the radio quantity being in active state to be greater than the wlan website quantity of AP access, when AC carries out CAPWAP encapsulation to message, fill Radio ID bitmap information;
Copy described message according to wlan website quantity, obtain first copy packet;
Hold mapping table that first copy packet is forwarded to AP according to AC.
2. a kind of message forwarding method according to claim 1, is characterized in that, described AC holds mapping table, comprising: set up in advance and be in the Radio ID of the Radio of active state and the mapping relations of corresponding message forwarding path.
3. a kind of message forwarding method according to claim 1, is characterized in that, described in carry the message of Radio ID bitmap information, comprising:
R flag bit, for carrying Radio ID bitmap information field in identification message;
R message information section, for carrying Radio ID bitmap information, wherein, described Radio IDbitmap message reflection is in the Radio ID of the Radio of active state and is in the radio quantity of active state.
4. a kind of message forwarding method according to claim 3, is characterized in that, comprising: hold mapping table write to carry Radio ID bitmap information according to AC.
5. a kind of message forwarding method according to any one of Claims 1-4, is characterized in that, also comprise:
When AP reports the radio quantity being in active state to be less than or equal to the wlan website quantity of AP access, AC carries out CAPWAP encapsulation to message and fills WLAN ID bitmap information;
Copy described message according to the radio quantity being in active state, obtain the 3rd batch of copy packet;
Mapping table is held by the 3rd reply message repeating processed to AP according to AC.
6. a message forwarding method, is characterized in that, comprising:
When first copy packet that AP receives carries Radio ID bitmap information, according to RadioID bitmap (R bitmap) generate rule second batch copy packet; Wherein, first copy packet generates according to wlan website quantity;
Resolve the Radio ID bitmap information of carrying in first copy packet, obtain Radio ID;
Mapping table is held to search basic service element identifier (element ID) BSSID corresponding to described Radio ID according to described AP;
Construct radio frames according to described basic service element identifier (element ID) BSSID, forward second batch copy packet.
7. a kind of message forwarding method according to claim 6, is characterized in that, comprising:
Receive first copy packet;
AP copies the message of first copy packet respectively according to the radio quantity being in active state and generates second batch copy packet.
8. a kind of message forwarding method according to claim 6, is characterized in that, described AP holds mapping table, comprising: that sets up in advance is in the Radio ID of the Radio of active state and the mapping relations of corresponding BSSID.
9. a kind of message forwarding method according to any one of claim 6 to 8, is characterized in that, also comprise:
When the 3rd batch of copy packet that AP receives carries WLAN ID bitmap information, according to WLAN ID bitmap (W bitmap) generate rule the 4th batch of copy packet; Wherein, the 3rd batch of copy packet generates according to the quantity being in active state radio;
Resolve the WLAN ID bitmap information of carrying in the 3rd batch of copy packet, obtain WLAN ID;
Mapping table is held to search basic service element identifier (element ID) BSSID corresponding to described WLAN ID according to described AP;
Construct radio frames according to described basic service element identifier (element ID) BSSID, forward the 4th batch of copy packet.
10. a kind of message forwarding method according to claim 9, is characterized in that, comprising:
Receive the 3rd batch of copy packet;
AP copies generation the 4th batch of copy packet to the message of the 3rd batch of copy packet respectively according to wlan website quantity.
11. 1 kinds of AC, is characterized in that, comprising: the first package module, the first replication module and the first forwarding module, wherein,
First package module: it is for reporting the radio quantity being in active state to be greater than the wlan website quantity of AP access during as AP, fills Radio ID bitmap information when AC carries out CAPWAP encapsulation to message;
First replication module: it, for copying described message according to wlan website quantity, obtains first copy packet;
First forwarding module: it is for holding mapping table that first copy packet is forwarded to AP according to AC.
12. a kind of AC according to claim 11, is characterized in that, described AC holds mapping table, comprising: the mapping relations for the Radio ID with corresponding message forwarding path that record the Radio being in active state that AC sets up in advance.
13. a kind of AC according to claim 12, is characterized in that, described first package module, comprising:
R flag bit unit: it is for carrying Radio ID bitmap information field in identification message;
R message information segment unit: it is for for carrying Radio ID bitmap information, wherein, described Radio ID bitmap message reflection is in the Radio ID of the Radio of active state and is in the radio quantity of active state.
14. a kind of AC according to claim 13, is characterized in that, described first package module, comprising:
Writing unit: it carries Radio ID bitmap information for holding mapping table write according to AC.
15. a kind of AC according to claim 14, is characterized in that, also comprise:
3rd package module: it is for reporting the radio quantity being in active state to be less than or equal to the wlan website quantity of AP access during as AP, AC carries out CAPWAP encapsulation to message and fills WLAN IDbitmap information;
3rd replication module: it obtains the 3rd batch of copy packet for copying described message according to the radio quantity being in active state;
3rd forwarding module: it is for holding mapping table by the 3rd reply message repeating processed to AP according to AC.
16. 1 kinds of AP, is characterized in that, comprising: the second replication module, the second parsing module, second search module and the second forwarding module, wherein,
Second replication module: when it carries Radio IDbitmap information for first copy packet received as AP, according to Radio ID bitmap (R bitmap) generate rule second batch copy packet; Wherein, first copy packet generates according to wlan website quantity;
Second parsing module: it, for resolving the Radio ID bitmap information of carrying in first copy packet, obtains described Radio ID;
Second searches module: it is for holding mapping table to search basic service element identifier (element ID) BSSID corresponding to described Radio ID according to described AP;
Second forwarding module: it, for constructing radio frames according to described basic service element identifier (element ID) BSSID, forwards second batch copy packet.
17. a kind of AP according to claim 16, is characterized in that, described second replication module, comprising:
Second receiving unit: it is for receiving first copy packet;
Second replication component: it copies the message of first copy packet according to the radio quantity being in active state respectively for making AP, generates second batch copy packet.
18. a kind of AP according to claim 16, is characterized in that, described AP holds mapping table, and it is in the Radio ID of the Radio of active state and the mapping relations of corresponding basic service element identifier (element ID) BSSID for setting up in advance.
19. a kind of AP according to claim 17, is characterized in that, also comprise:
4th replication module: when it carries WLAN IDbitmap information for the 3rd batch of copy packet received as AP, according to WLAN ID bitmap (W bitmap) generate rule the 4th batch of copy packet; Wherein, the 3rd batch of copy packet generates according to the quantity being in active state radio;
4th parsing module: it is for resolving the WLAN ID bitmap information of carrying in the 3rd batch of copy packet, obtains WLAN ID;
4th searches module: hold mapping table to search basic service element identifier (element ID) BSSID corresponding to described WLAN ID according to described AP;
4th forwarding module: construct radio frames according to described basic service element identifier (element ID) BSSID, forward the 4th batch of copy packet.
20. a kind of AP according to claim 19, is characterized in that, described 4th replication module, comprising:
4th receiving unit: it is for receiving the 3rd batch of copy packet;
4th replication component: it copies the message of the 3rd batch of copy packet according to wlan website quantity respectively for making AP, generates the 4th batch of copy packet.
21. 1 kinds of message forwarding systems, is characterized in that, comprising: the AC as described in any one of claim 11 to the 15 and AP as described in any one of claim 16 to 20.
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| WO2017084387A1 (en) * | 2015-11-19 | 2017-05-26 | 华讯方舟科技有限公司 | Method and device for extending the number of wlan ids |
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| CN113364893B (en) * | 2020-03-06 | 2022-09-16 | 华为技术有限公司 | Data transmission method, device and system |
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| CN104754521B (en) | 2018-09-11 |
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Address after: Cangshan District of Fuzhou City, Fujian province 350002 Jinshan Road No. 618 Garden State Industrial Park 19 floor Patentee after: RUIJIE NETWORKS Co.,Ltd. Address before: Cangshan District of Fuzhou City, Fujian province 350002 Jinshan Road No. 618 Garden State Industrial Park 19 floor Patentee before: Beijing Star-Net Ruijie Networks Co.,Ltd. |
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