WO2010012152A1 - Procédé et équipement servant à mettre en place une transmission de données dans un réseau sans fil - Google Patents

Procédé et équipement servant à mettre en place une transmission de données dans un réseau sans fil Download PDF

Info

Publication number
WO2010012152A1
WO2010012152A1 PCT/CN2009/000658 CN2009000658W WO2010012152A1 WO 2010012152 A1 WO2010012152 A1 WO 2010012152A1 CN 2009000658 W CN2009000658 W CN 2009000658W WO 2010012152 A1 WO2010012152 A1 WO 2010012152A1
Authority
WO
WIPO (PCT)
Prior art keywords
local area
wireless
wireless local
area network
data packet
Prior art date
Application number
PCT/CN2009/000658
Other languages
English (en)
Chinese (zh)
Inventor
温海波
Original Assignee
阿尔卡特朗讯
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 阿尔卡特朗讯 filed Critical 阿尔卡特朗讯
Publication of WO2010012152A1 publication Critical patent/WO2010012152A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery

Definitions

  • the present invention relates to wireless networks, and more particularly to a method and apparatus for data transmission between a wireless termination device and an access controller in a centralized wireless local area network.
  • WLAN Wireless LAN
  • Wired LAN Wireless LAN
  • 802.11 wireless LAN and DSL Digital Subscribe Line
  • VAS Value-added services
  • the IE WAP Internet Engineering Task Force
  • CAP WAP Control And Provisioning of Wireless Access Points
  • an access node (Access Node) in an access network includes an access controller (AC, Access Controller), an access controller, and an or A plurality of wireless termination points (WTPs) are connected, wherein the wireless termination point includes a function of wireless access.
  • Each wireless termination point allows for one or more wireless local area networks (WLANs), each of which contains one or more wireless user terminals.
  • the other end of the access controller in the access node is connected to a network device such as an edge router and, in turn, to a network of one or more Network Service Providers (NSPs).
  • NSPs Network Service Providers
  • the CAMWAP protocol (see references 2 and 3) is used for communication between the wireless termination point and the access controller.
  • the access controller can create one or more WLANs on a wireless termination point, ie when When the access controller and the wireless termination point are connected by one DSL line, multiple WLANs can be created under the same DSL line. In this way, the DSL operator can provide differentiated value-added services through different WLANs, or corresponding different WLANs to different network service providers (NSPs).
  • NSPs network service providers
  • the CAPWAP protocol is used for data transmission between the wireless termination device and the access controller, and the transmitted data includes a CAPWAP Control Packet (CAPWAP Control Packet) and a CAPWAP Data Packet (CAPWAP Data Packet).
  • CAPWAP Control Packet CAPWAP Control Packet
  • CAPWAP Data Packet CAPWAP Data Packet
  • UDP User Datagram Protocol
  • wireless data frames such as 802.11 frames
  • the wireless termination point ⁇
  • the current working mode such as: Local-MAC mode or Split-MAC mode
  • convert the resulting The 802.3 frame or the original wireless data frame plus the CAPWAP header CAPWAP Header
  • CAPWAP Header CAPWAP Header
  • Encapsulation, encapsulation of IP packet headers, and encapsulation of 802.3 headers (802.3 Header).
  • the wireless data sent from the access controller to the wireless termination point (the final wireless termination point is forwarded to the corresponding user terminal in the corresponding wireless local area network) also needs to go through the above-mentioned encapsulation and access
  • the UDP connection between the controller and the wireless termination point is transmitted.
  • the wireless termination point and the corresponding access controller mutually forward wireless data from or to the user terminal in the corresponding wireless local area network
  • the wireless data must be layered. Encapsulation, and then transmission through a network connection such as a UDP connection between the wireless termination point and the access controller, resulting in the transmission of wireless data low efficiency.
  • a network connection such as a UDP connection between the wireless termination point and the access controller
  • the present invention proposes a method for efficient data transmission between an access controller of a wireless network and a wireless termination device, wherein, in actual network deployment, a wireless network is considered.
  • the access controller and the wireless termination device are directly connected through the Layer 2 network in many cases, so the present invention improves the method and apparatus for data transmission between the wireless wireless termination device and the access controller in the wireless network. .
  • a method for data transmission between the access controller and a wireless termination device in an access controller of a wireless network comprising the steps of: configuring one or more WLANs to the wireless termination device Transmitting an identifier, wherein one of the one or more wireless local area network transmission identifiers uniquely corresponds to the one One of the one or more wireless local area networks, the different wireless local area network transmission identifiers corresponding to different wireless local area networks; the data packets being transmitted to the wireless termination device on the layer 2 network, wherein the data packets include the one or more One of the wireless local area network transmission identifiers is used to indicate that the data packet is sent to the wireless local area network corresponding to the included wireless local area network transmission identifier.
  • a method for data transmission between the wireless termination device and an access controller in a wireless termination device of a wireless network comprising the steps of: receiving a configuration related to a wireless local area network transmission identifier from the access controller Information, including one or more WLAN transmission identifiers, one of the one or more WLAN transmission identifiers uniquely corresponding to one of the one or more WLANs, different WLAN transmission identifiers corresponding to different Wireless local area network; transmitting a data packet to the access controller on a Layer 2 network, wherein the data packet includes one of the one or more wireless local area network transmission identifiers for indicating that the data packet is from the The one or more wireless local areas corresponding to the included wireless local area network transmission identifier one of the.
  • an apparatus for data transmission between the access controller and a wireless termination device in an access controller of a wireless network wherein the wireless termination device allows one Or multiple WLAN accesses, the access controller and the wireless termination device are connected on the same Layer 2 network, and the device comprises a transmission identifier sending device and a data packet transceiver device.
  • the transmission identifier sending device is configured to configure one or more wireless local area network transmission identifiers to the wireless termination device, wherein one of the one or more wireless local area network transmission identifiers uniquely corresponds to the one or more wireless local area networks One of the different WLAN transmission identifiers corresponds to a different WLAN; the data packet transceiver is configured to send a data packet to the wireless termination device on the Layer 2 network, wherein the data packet includes the one or more One of the wireless local area network transmission identifiers is used to indicate that the data packet is sent to the wireless local area network corresponding to the included wireless local area network transmission identifier.
  • a wireless termination device in a wireless network Means for performing data transmission between the wireless termination device and an access controller, wherein the wireless termination device allows one or more wireless local area network access, the access controller and the wireless termination device Connected on the same Layer 2 network, the device includes a transmission identifier receiving device and a data packet transceiver.
  • the transmission identifier receiving apparatus is configured to receive configuration information about the WLAN transmission identifier from the access controller, where the one or more WLAN transmission identifiers are included, and one of the one or more WLAN transmission identifiers Uniquely corresponding to one of the one or more wireless local area networks, different wireless local area network transmission identifiers corresponding to different wireless local area networks; the data packet transceiving device is configured to send data packets to the access controller on the layer 2 network, The data packet includes one of the one or more wireless local area network transmission identifiers for indicating that the data packet is from one of the one or more wireless local area networks corresponding to the included wireless local area network transmission identifier. .
  • the transmission efficiency is improved, thereby improving The utilization of limited bandwidth resources between the wireless termination device and the access controller further improves the operating efficiency of the entire wireless network.
  • FIG. 1 is a schematic diagram of a network topology structure in the prior art
  • FIG. 2 is a schematic structural diagram of a data packet transmitted between a wireless termination device and an access controller in the prior art
  • FIG. 3 is a flow chart of a method for data transmission between a wireless termination device and an access controller in accordance with an embodiment of the present invention
  • FIG. 4a is a schematic structural diagram of a data packet transmitted between a wireless termination device and an access controller according to the present invention (the wireless termination device operates in a local-MAC mode);
  • 4b is a schematic structural diagram of a data packet transmitted between a wireless termination device and an access controller according to the present invention (the wireless termination device operates in a split-MAC mode);
  • FIG. 5 is a wireless in an access controller in accordance with an embodiment of the present invention.
  • a block diagram of a device for providing data transmission between the terminating device and the access controller a block diagram of the device for providing data transmission between the line terminating device and the access controller;
  • FIG. 7 is a flow chart of a method of data transmission between a wireless termination device and an access controller in accordance with another embodiment of the present invention.
  • FIG. 8 is a structural diagram of a wireless local area network transmission identifier according to another embodiment of the present invention.
  • FIG. 9 is a schematic diagram showing the location of a channel mode ("Tunnel Mode") in an "IEEE 802.11 Add WLAN" information element according to another embodiment of the present invention
  • FIG. 10 is a diagram showing a wireless local area network according to another embodiment of the present invention.
  • the information of the transmission identifier constitutes a map.
  • FIG. 3 is a flow diagram of a method of data transfer between a wireless termination device and an access controller in accordance with an embodiment of the present invention. The specific embodiment shown in Fig. 3 will be described in detail below with reference to Figs. 4a and 4b.
  • the wireless termination device 31 reports the mode information of the network connection in which it is located to the access controller 41 in step S31.
  • the mode information may include information about a network connection between the wireless termination device 31 and the access controller 41.
  • the specific mode information may be information such as an IP address and a MAC address of the wireless termination device 31.
  • the wireless termination device 31 and the access controller 41 are connected through other types of networks, the above mode information is related to the type of the particular network connection.
  • the access controller 41 determines whether the access controller 41 and the wireless termination device 31 are connected to the same Layer 2 network according to the mode information of the network connection reported by the wireless termination device 31. Specifically, if they are connected through an IP network, the access controller 41 can wirelessly terminate the device according to the received mode information. Whether the IP address of 31 and its own IP address are on the same IP subnet, or whether the IP addresses of the two are in the same subnet address segment to determine whether the two are directly connected to the same one. On the second floor network. If it is determined that the two are indeed connected to the same Layer 2 network, the process proceeds to step S33.
  • step S33 the access controller 41 transmits the license information containing the relevant data transmission format to the wireless termination device 31 for indicating to the wireless termination device 31 that they are connected on the same layer 2 network, and the Data transmission is performed through the layer 2 network.
  • the wireless termination device 31 After receiving the license information, the wireless termination device 31 then performs data transmission between the subsequent access controller 41 directly through the Layer 2 network.
  • the wireless termination device 31 and the access controller 41 can also transmit through other transmissions.
  • the channel (for example, when the two are connected through an IP network, through a channel such as a UDP connection between the two) transmits other data such as control messages.
  • the access controller 41 transmits wireless local area network transmission configuration information to the wireless termination device 31 via step S34, including one or more wireless local area network transmission identifiers, each of which corresponds uniquely to the wireless termination device 31.
  • One of the one or more wireless local area networks, the different wireless local area network transmission identifiers correspond to different wireless local area networks.
  • the wireless termination device 31 allocates a wireless local area network transmission identifier obtained from the configuration information for each wireless local area network that has been created or is about to be created under the wireless termination device, different wireless The LAN transmission identifier is used to distinguish between different wireless LANs.
  • step S35 if the subsequent wireless termination device 31 is to forward wireless data (for example, an 802.11 frame) from a user terminal of a certain wireless local area network to the access controller 41, the wireless data and the wireless are first used.
  • the WLAN transmission identifier corresponding to the local area network is put into the data packet, and then the data packet is forwarded to the access controller 41 through the Layer 2 network.
  • the access controller 41 After receiving the above data packet forwarded by the wireless termination device 31, the access controller 41 The included wireless local area network transmission identifier is obtained from the data packet, so that the wireless data included in the data packet is obtained from which wireless local area network under the wireless termination device 31.
  • the above S33 and S34 can be implemented by extending the control message in the existing CAPWAP protocol.
  • the foregoing data packet including the wireless data and the wireless network transmission identifier directly completes the transmission between the wireless termination device 31 and the access controller 41 through the Layer 2 network, it is possible to reduce a lot of unnecessary compared with the prior art. Packaging process. Specifically, taking the network structure shown in FIG. 1 as an example, the wireless termination device 31 and the access controller 41 are connected through an IP network and connected to the same Layer 2 network, and the wireless local area network.
  • the wireless local area network transmission identifier corresponding to the WLAN 21 is the VLAN ID 21, and the wireless termination device 31 receives the wireless data sent from the user terminal 11 in the wireless local area network WLAN 21. Further, according to the CAPWAP protocol, the wireless termination device 31 can operate in the Local-MAC. The mode can also work in the Split-MAC mode. Therefore, in the two modes, the data transmission process of the wireless termination device 31 and the access controller 41 in the present invention are respectively described in detail:
  • Step 1 The wireless termination device 31 receives the user in the wireless local area network WLAN 21.
  • the wireless data sent by the terminal 11 (for example, when the wireless local area network WLAN 21 is an 802.11 network, the wireless data is specifically an 802.11 frame);
  • Step 2 The wireless termination device 31 converts the wireless data frame into an 802.3 frame, which includes an 802.3 frame header and three layers of protocol data (IP packets) as a payload;
  • IP packets protocol data
  • Step 3 For the data frame that needs to be sent to the access controller, the wireless termination device 31 combines the VLAN ID 21, the 802.3 frame header obtained in step 2, and the three layer protocol data (IP packet) as the payload (Fig. 4a).
  • the 802.3 frame with VLAN ID 21 is shown, and the destination MAC address in the frame header of the 802.3 frame with VLAN ID 21 is modified to the MAC address of the access controller 41.
  • Step 4 The wireless termination device 31 passes the new 802.3 frame shown in Figure 4a through the second layer.
  • the network is sent to the access controller 41;
  • Step 5 After receiving the 802.3 frame as shown in FIG. 4a, the access controller 41 extracts the VLAN ID 21 from it, so that the 802.3 frame with the VLAN ID is obtained from the wireless local area network WLAN 21, and at the same time, according to the above-mentioned VLAN ID.
  • the contents of the other parts of the 802.3 frame are processed accordingly or forwarded to other corresponding devices in the network shown in FIG.
  • the destination wireless local area network where the destination user terminal of the access controller 41 is in the downlink data determines the corresponding wireless local area network transmission identifier, and is formed together with the downlink data as shown in FIG. 4a.
  • the 802.3 frame is shown, and then the downlink data is forwarded to the wireless termination device 31.
  • the wireless termination device 31 when the wireless termination device 31 operates in the Local-MAC mode defined by the CAPWAP, the efficiency of wireless data forwarding between the wireless termination device 31 and the access controller 41 is greatly improved by the above-described steps of the present invention.
  • Step 1 The wireless termination device 31 receives the wireless local area network WLAN 21
  • the wireless data sent by the user terminal 11 for example, when the wireless local area network WLAN 21 is an 802.11 network, the wireless data is specifically an 802.11 frame (including an 802.11 frame header and an upper layer protocol data packet));
  • Step 2 The WLAN 21 determines the corresponding WLAN transmission identifier VLAN ID 21, and forms the above-mentioned wireless data (such as 802.11 frame) into an 802.3 frame with VLAN ID 21 (as shown in FIG. 4b), and at the same time, the wireless termination device 31
  • the MAC address and the MAC of the access controller 41 fill in the header portion of the 802.3 frame with the VLAN ID 21 as the source MAC address and the destination MAC address, respectively;
  • Step 3 The wireless termination device 31 sends the 802.3 frame shown in Figure 4b to the access controller 41 through the Layer 2 network;
  • Step 4 After receiving the 802.3 frame as shown in FIG. 4b, the access controller 41 extracts the VLAN ID 21 therefrom, so that the wireless data included in the 802.3 frame with the VLAN ID is obtained from the wireless local area network WLAN 21 corresponding to the VLAN ID 21; , the access controller 41, the wireless included in the payload of the above 802.3 frame with VLAN ID Data (such as 802.11 frames) is converted to a corresponding 802.3 frame, which is processed or forwarded to other corresponding devices in the network shown in FIG.
  • VLAN ID Data such as 802.11 frames
  • the destination wireless local area network where the destination user terminal of the access controller 41 is in the downlink data determines the corresponding wireless local area network transmission identifier, and is formed together with the downlink data as shown in FIG. 4b.
  • the 802.3 frame is then forwarded to the wireless termination device 31.
  • the wireless termination device 31 when the wireless termination device 31 operates in the split-MAC mode defined by the CAPWAP, the efficiency of wireless data forwarding between the wireless termination device 31 and the access controller 41 is greatly improved by the above-described steps of the present invention.
  • the access controller in the present invention may also be a Digital Subscriber Line Access Multiplexer (DSLAM) for directly controlling one or more wireless termination devices connected thereto.
  • DSLAM Digital Subscriber Line Access Multiplexer
  • FIG. 5 is a block diagram showing the structure of an apparatus for providing data transmission between a wireless termination device and an access controller in an access controller in accordance with an embodiment of the present invention.
  • the data transmission device 500 includes a connection mode receiving device 501, a license information transmitting device 502, a transmission identification transmitting device 503, and a packet transmitting and receiving device 504.
  • a connection mode receiving device 501 receives data from a wireless termination device and an access controller in an access controller in accordance with an embodiment of the present invention.
  • the data transmission device 500 includes a connection mode receiving device 501, a license information transmitting device 502, a transmission identification transmitting device 503, and a packet transmitting and receiving device 504.
  • Those skilled in the art in light of the teachings of the present application, will appreciate that only the transmission identification transmitting device 503 and the data packet transceiving device 504 are necessary to implement the present invention, and other sub-devices are optional devices.
  • WLAN ID wireless local area network
  • the connection mode receiving means 501 receives the mode information about the network connection between the access controller and the wireless termination device reported by the wireless termination device 31.
  • the above manner information mainly includes information such as the IP address of the wireless termination device 31.
  • the license information transmitting means 502 determines whether the access controller 41 and the wireless termination device 31 are connected to the same Layer 2 network according to the received mode information of the network connection. Specifically, if the access controller 41 and the wireless termination device 31 are connected through an IP network, the license information transmitting device 502 can obtain information according to the received manner. Whether the IP address of the wireless termination device 31 and the IP address of the access controller 41 are on the same IP subnet, or whether the IP addresses of the two are in the same subnet address segment to determine whether they are directly between Connected to the same Layer 2 network. If it is determined that the connection is on the same Layer 2 network, the license information transmitting means 502 transmits the license information containing the relevant data transmission format to the wireless termination device 31.
  • the transmission identifier transmitting means 503 transmits the wireless local area network transmission configuration information to the wireless termination device 31, including one or more wireless local area network transmission identifiers, each of the wireless local area network transmission identifiers uniquely corresponding to one or more established by the wireless termination device 31.
  • One of the wireless local area networks, the different wireless local area network transmission identifiers correspond to different wireless local area networks.
  • the packet transceiver 504 transmits and receives data packets on the Layer 2 network between the wireless termination device 31 and the access controller 41. Specifically, when the wireless termination device 31 operates in the Local-MAC mode and the Split-MAC mode defined by the CAPWAP protocol, respectively, the composition of the data packet is as shown in FIG. 4a and FIG. 4b, respectively.
  • the packet transceiver 504 When the wireless termination device 31 operates in the Local-MAC mode, in the uplink direction, after receiving the data packet as shown in FIG. 4a, that is, the 802.3 frame with the wireless LAN transmission identification VLAN ID, the packet transceiver 504 first The VLAN ID 12 is obtained from the 802.3 frame. Since the VLAN ID 12 is the wireless local area network transmission identifier of the wireless local area network WLAN 12 corresponding to the wireless termination device 31, it can be determined that the wireless data contained in the data packet is from the wireless local area network WLAN 12. Secondly, the contents of the other parts of the 802.3 frame with the VLAN ID are processed or forwarded to other corresponding devices in the network shown in Fig. 1. It can be understood by those skilled in the art that, in the downlink direction, when the access controller 41 receives the wireless data sent by the other device in the network as shown in FIG. 1 to the user terminal 12, the packet transceiver 504 firstly Wireless data destination wireless LAN
  • the WLAN 12 determines its corresponding WLAN transmission identifier VLAN ID12, and then combines the VLAN ID 12 and the above-mentioned wireless data into an 802.3 frame with a VLAN ID as shown in FIG. 4a, and at the same time, the source MAC address and the destination MAC of the Header portion of the 802.3 frame.
  • the addresses are respectively designated as the MAC address of the access controller 41 and the MAC address of the user terminal 12, and then the newly composed 802.3 frame is transmitted to the wireless termination device 31.
  • the packet transceiver 504 receives the data packet as shown in FIG.
  • the wireless local area network transmission identification VLAN ID and the original format wireless data After the 802.3 frame of the 802.11 frame, it first obtains the VLAN ID 12 from it. Since the VLAN ID 12 is the wireless local area network transmission identifier of the wireless local area network WLAN 12 corresponding to the wireless termination device 31, the wireless data contained in the data packet can be determined. From the wireless LAN WLAN 12. Secondly, the original format wireless data (such as 802.11 frame) included in the above 802.3 frame with VLAN ID is converted into a new 802.3 frame, and the new 802.3 frame is sent to other corresponding devices in the network shown in FIG. .
  • the original format wireless data such as 802.11 frame
  • the packet transceiver 504 firstly The purpose of the wireless data WLAN 12 determines its corresponding WLAN transmission identification VLAN ID 12, and then converts the downlink wireless data into a wireless data frame of the original format (such as an 802.11 frame), and then the VLAN ID 12 and the wireless data of the original format described above.
  • the frame is composed of an 802.3 frame with a VLAN ID as shown in FIG.
  • the source MAC address and the destination MAC address of the Header portion of the 802.3 frame are respectively designated as the MAC address of the access controller 41 and the MAC address of the wireless termination device 31. Then, the newly composed 802.3 frame is transmitted to the wireless termination device 31.
  • the data transmission device 600 includes a connection mode transmitting device 601, a license information receiving device 602, a transmission flag receiving device 603, and a packet transceiver device 604.
  • a connection mode transmitting device 601 includes a license information receiving device 602, a transmission flag receiving device 603, and a packet transceiver device 604.
  • WLAN ID wireless local area network
  • the connection mode transmitting device 601 reports the mode information about the network connection between the access controller and the wireless termination device of the wireless termination device 31 to the access controller 41.
  • the above information mainly includes wireless termination. Prepare 31 IP address and other information.
  • the license information receiving device 602 receives the license information from the access controller 41 containing the relevant data transfer format. If the permission information includes an indication that the wireless termination device 31 and the access controller 41 can directly send and receive data packets through the Layer 2 network between the two, the data packet transceiver 604 is instructed to directly send and receive data through the Layer 2 network. package.
  • the transmission identifier receiving device 603 receives the wireless local area network transmission configuration information sent from the access controller 41, including one or more wireless local area network transmission identifiers, each of which is uniquely associated with the wireless termination device 31.
  • One of the one or more wireless local area networks, the different wireless local area network transmission identifiers correspond to different wireless local area networks.
  • the packet transceiver 604 transmits and receives data packets on the Layer 2 network between the wireless termination device 31 and the access controller 41. Specifically, when the wireless termination device 31 operates in the Local-MAC mode and the Split-MAC mode defined by the CAPWAP protocol, respectively, the composition of the data packet is as shown in FIG. 4a and FIG. 4b, respectively.
  • the packet transceiver 604 When the wireless termination device 31 is operating in the Local-MAC mode, in the downstream direction, after receiving the data packet as shown in FIG. 4a, that is, the 802.3 frame with the wireless LAN transmission identification VLAN ID, the packet transceiver 604 first The VLAN ID 12 is obtained in the 802.3 frame. Since the VLAN ID 12 is the wireless local area network transmission identifier of the wireless local area network WLAN 12 corresponding to the wireless termination device 31, it can be determined that the wireless data contained in the data packet is to be sent to the wireless local area network WLAN 12. Secondly, according to the above 802.3 frame with VLAN ID, it is converted into a corresponding 802.11 frame and forwarded to the wireless local area network WLAN12.
  • the packet transceiver 604 first determines the corresponding wireless according to the wireless local area network WLAN 12.
  • the LAN transmission identifier VLAN ID12 converts the received wireless data (ie, 802.11 frame) into 802.3 frames and forms the 802.3 frame with the VLAN ID as shown in FIG. 4a with the VLAN ID 12, and the source MAC of the Header portion of the 802.3 frame.
  • the address and destination MAC address are respectively designated as the MAC address of the user terminal 12 and the MAC address of the access controller 41, and then the newly formed 802.3 frame is transmitted to the access controller 41.
  • the packet transceiver 604 receives the data packet as shown in FIG. 4b, that is, the wireless LAN transmits the identification VLAN ID and the original format of the wireless data (eg, After the 802.3 frame of the 802.11 frame), it first obtains the VLAN ID 12 from it. Since the VLAN ID 12 is the wireless local area network transmission identifier of the wireless local area network WLAN 12 corresponding to the wireless termination device 31, it can be determined that the wireless data contained in the data packet is to be Send to WLAN 12 on the wireless LAN. Next, the original format wireless data (such as 802.11 frame) included in the above 802.3 frame with VLAN ID is sent to the wireless local area network WLAN 12. It will be understood by those skilled in the art that, in the uplink direction, when the wireless termination device 31 receives the wireless data (such as an 802.11 frame) in the original format from the user terminal 12, the packet transceiver 604 first according to the user terminal.
  • the wireless termination device 31 receives the wireless data (such as an 802.11 frame) in the original format from the
  • the VLAN ID 12 is combined with the received original format wireless data to form an 802.3 frame with a VLAN ID as shown in FIG. 4b, and the source MAC address and the destination MAC address of the Header portion of the 802.3 frame are respectively designated.
  • the newly formed 802.3 frame is then transmitted to the access controller 41.
  • Figure 7 is a flow chart showing a method of data transfer between a wireless termination device and an access controller in accordance with another embodiment of the present invention. The specific embodiment shown in Fig. 7 will be described in detail below with reference to Fig. 1.
  • the CAPWAP protocol is used for data transmission between the wireless termination device and the access controller, wherein the transmitted data includes
  • the CAPWAP control packet and CAPWAP packet When the CAPWAP protocol communication is performed between the wireless termination device and the access controller through the UDP connection, the encapsulation structure of the CAPWAP data packet transmitted between the two is as shown in FIG. 2 .
  • the CAPWAP data packet can be directly transmitted through the Layer 2 network, thereby reducing unnecessary packaging processes and improving transmission efficiency. .
  • the CAPWAP protocol carries out the necessary extensions.
  • extensions include: 1) Based on the three tunnel modes (802.3 frame tunnel mode, native frame tunnel mode, and local bridging) between the wireless termination device and the access controller defined by the existing CAPWAP protocol, the extension defines Simple Tunnel mode.
  • Simple Tunnel mode is negotiated between the wireless termination device 31 and the access controller 41, the subsequent CAPWAP data packets are directly transmitted through the Layer 2 network. That is, the WTP Frame Tunnel Mode information element (Information Element) in the existing CAPWAP protocol is extended. When the value is 8, the Simple Tunnel mode is indicated.
  • a new WLAN transmission identification information element which is used to indicate the WLAN transmission identifier used in the present invention, and is named as a VLAN ID, and the transmission identifier specifically includes an 8-bit wireless ID (Radio ID), 8-bit wireless LAN ID (WLAN ID) and a 16-bit virtual network information (VLAN)
  • the wireless local area network transmission identifier represented by the information element uniquely corresponds to a wireless local area network established by a wireless termination device, and different wireless local area network transmission identifiers correspond to different wireless local area networks.
  • step S71 the wireless termination device 31 sends a Discovery Request request message to the access controller 41 for determining whether the access controller 41 can provide services for it.
  • the request message includes a WTP Frame Tunnel Mode information element, and a value of 8, indicating that the wireless termination device 31 supports the Simple Tunnel mode.
  • step S72 the access controller 41 returns a Discovery to the wireless termination device 31.
  • the Response response message is used to indicate that the access controller 41 will provide services for the wireless termination device 31 in a subsequent process.
  • the access controller 41 determines that the wireless termination device 31 is connected to the same Layer 2 network, it indicates to the wireless termination device 31 that subsequent CAPWAP data packets will be transmitted directly through the Layer 2 network.
  • the wireless termination device can simultaneously transmit the mode information of the network connection such as the IP address of the wireless termination device 31 to the access controller 41 in the step S71.
  • step S73 according to the existing CAPWAP protocol, a UDP connection or a DTLS connection is established between the wireless termination device 31 and the access controller 41.
  • step S74 and step S75 the wireless termination device 31 requests the access controller 41 to provide the service through the CAPWAP control message CAPWAP Join Request, and the access controller 41 also returns a CAPWAP control message to the wireless termination device 31.
  • the wireless termination device 31 can also indicate that it has the processing capability of supporting the Simple Tunnel mode; in the CAPWAP Join Response message, the Simple Tunnel mode is Transfer CAPWAP packets between the two.
  • step S76 related configuration information is exchanged between the wireless termination device 31 and the access controller 41 through the WTP Configuration procedure.
  • the access controller 41 transmits an IEEE 802.11 WLAN Configuration Request configuration request message to the wireless termination device 31 via step S77, including the extended definition of the wireless local area network transmission identification information element, and the extended definition "IEEE 802.11 Add WLAN". , the latter contains "Tunnel Mode" with a value of 3.
  • the configuration request message instructs the wireless termination device 31 to create a wireless local area network and uniquely indicates the newly created wireless local area network using the wireless local area network transmission identifier contained in the wireless local area network transmission identification information element.
  • the configuration request message further indicates that after the wireless termination device 31 creates a new wireless local area network, the access controller 41 and the wireless termination device 31 Simple Tunnel mode is used when forwarding CAPWAP packets from or to the WLAN.
  • a plurality of wireless local area network transmission identifiers may be included in the one configuration request message to command the wireless termination device 31 to create a plurality of wireless local area networks, and the different wireless local area network transmission identifiers represent different newly created wireless local area networks.
  • the wireless termination device 31 After receiving the configuration request message, the wireless termination device 31 creates one or more wireless local area networks, and distinguishes the created wireless local area network by using the wireless local area network transmission identifier carried in the configuration request message. In other words, in the wireless termination device 31, a mapped relationship is established between the created wireless local area network and the received wireless local area network transmission identification.
  • a CAPWAP packet is transmitted between the wireless termination device 31 and the access controller 41 via a step S79 on the Layer 2 network between the two.
  • the specific encapsulation format of the CAPWAP data packet adopts the encapsulation format shown in Figures 4a and 4b, respectively.
  • the present invention can be easily implemented on the basis of the extension of the existing CAPWAP protocol, thereby improving the transmission between the wireless termination device and the access controller in the centralized wireless network in the existing CAPWAP protocol.
  • the transmission efficiency of CAPWAP packets also effectively improves the utilization of limited and valuable transmission bandwidth resources between the wireless termination device and the access controller.
  • due to the introduction of the WLAN transmission identifier it is very simple for the wireless termination device and the access controller to distinguish which WLAN from which the data packet comes.
  • FIG. 10 is a structural diagram showing another extended definition of a wireless local area network transmission identification information element, wherein the transmission identification specifically includes an 8-bit wireless ID (Radio ID) and an 8-bit wireless local area network ID (WLAN ID).
  • the transmission identification specifically includes an 8-bit wireless ID (Radio ID) and an 8-bit wireless local area network ID (WLAN ID).
  • the IEEE 802. il connection identifier (AID, Association Identifier) and the 32-bit VLAN tag information, wherein the VLAN tag includes a 16-bit 802.1g type identifier (802. lg type identifier) with a fixed value of 0x8100, and a 3-bit user.
  • Priority information 1-bit specification format indication (CFI, Canonical Format Indicator) and 12-bit VLAN information.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé destiné à une transmission de données entre un contrôleur d'accès et un équipement de terminaison sans fil dans le contrôleur d'accès d'un réseau sans fil, ayant pour but de résoudre le problème technique selon lequel l'efficacité de transmission de la transmission des données entre un équipement de terminaison sans fil et un contrôleur d'accès est faible dans le réseau sans fil actuel, à cause des couches de paquetage excessives. L'équipement de terminaison sans fil permet à un ou plusieurs réseaux locaux sans fil d'y accéder, le contrôleur d'accès et l'équipement de terminaison sans fil se connectant sur le même second réseau de couches. Le procédé consiste à : configurer une ou plusieurs identifications de transmission du réseau local sans fil pour l'équipement de terminaison sans fil, les différentes identifications de transmission du réseau local sans fil correspondant à différents réseaux locaux sans fil; transmettre un paquet de données à l'équipement de terminaison sans fil sur le second réseau de couches, l'identification de transmission du réseau local sans fil incluse dans le paquet de données étant utilisée pour indiquer que le paquet de données est transmis au réseau local sans fil auquel l'identification de transmission locale sans fil incluse correspond. L'efficacité de la transmission des paquets de données entre l'équipement de terminaison sans fil et le contrôleur d'accès dans un réseau sans fil peut être améliorée efficacement grâce à l'invention fournie dans la présente invention.
PCT/CN2009/000658 2008-08-01 2009-06-16 Procédé et équipement servant à mettre en place une transmission de données dans un réseau sans fil WO2010012152A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810041304A CN101640621B (zh) 2008-08-01 2008-08-01 一种在集中式无线网络中实现数据传输的方法和装置
CN200810041304.7 2008-08-01

Publications (1)

Publication Number Publication Date
WO2010012152A1 true WO2010012152A1 (fr) 2010-02-04

Family

ID=41609923

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/000658 WO2010012152A1 (fr) 2008-08-01 2009-06-16 Procédé et équipement servant à mettre en place une transmission de données dans un réseau sans fil

Country Status (2)

Country Link
CN (1) CN101640621B (fr)
WO (1) WO2010012152A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103249107A (zh) * 2013-05-21 2013-08-14 深圳市共进电子股份有限公司 一种提高无线热点ap吞吐量的方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102638813A (zh) * 2011-02-12 2012-08-15 苏州达联信息科技有限公司 一种铁路轨道监测传感网络控制器通信协议的消息实现方法
CN103108254A (zh) * 2011-11-15 2013-05-15 苏州达联信息科技有限公司 一种视频分发网络集中控制协议的信息传输方法
CN102547850B (zh) * 2012-02-22 2014-04-09 深圳市共进电子股份有限公司 一种capwap隧道的实现方法
CN103458405A (zh) * 2012-05-28 2013-12-18 中国移动通信集团公司 无线局域网中认证信息处理方法及相关网络设备
CN102868647B (zh) * 2012-09-26 2015-06-03 大唐移动通信设备有限公司 一种基于Linux网络内核的数据处理方法和装置
CN103442015B (zh) * 2013-09-04 2016-07-06 南京华讯方舟通信设备有限公司 一种基于linux虚拟网卡的在无线网络控制器上对capwap隧道数据的处理方法及系统
CN103595646A (zh) * 2013-11-25 2014-02-19 深圳市华讯方舟科技有限公司 一种在瘦ap中对集中转发的数据包的处理方法及系统
EP4064617A4 (fr) * 2019-12-25 2022-12-07 Huawei Technologies Co., Ltd. Procédé et dispositif de communication

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1571377A (zh) * 2003-07-21 2005-01-26 中兴通讯股份有限公司 无线局域网接入点设备虚拟局域网的实现方法
WO2006051638A1 (fr) * 2004-11-12 2006-05-18 Matsushita Electric Industrial Co., Ltd. Système de communication, contrôleur de station de base lan sans fil et dispositif de station de base lan sans fil
CN1913475A (zh) * 2006-09-14 2007-02-14 杭州华为三康技术有限公司 一种扩展802.11无线局域网的方法及系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1571377A (zh) * 2003-07-21 2005-01-26 中兴通讯股份有限公司 无线局域网接入点设备虚拟局域网的实现方法
WO2006051638A1 (fr) * 2004-11-12 2006-05-18 Matsushita Electric Industrial Co., Ltd. Système de communication, contrôleur de station de base lan sans fil et dispositif de station de base lan sans fil
CN1913475A (zh) * 2006-09-14 2007-02-14 杭州华为三康技术有限公司 一种扩展802.11无线局域网的方法及系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103249107A (zh) * 2013-05-21 2013-08-14 深圳市共进电子股份有限公司 一种提高无线热点ap吞吐量的方法

Also Published As

Publication number Publication date
CN101640621B (zh) 2012-09-19
CN101640621A (zh) 2010-02-03

Similar Documents

Publication Publication Date Title
US11856627B2 (en) Communication method and apparatus
WO2010012152A1 (fr) Procédé et équipement servant à mettre en place une transmission de données dans un réseau sans fil
CN107006022B (zh) 用户装置、存储装置以及lwa pdu路由方法及装置
CN105637905B (zh) 用于实现pdn连接的方法、装置和系统
US7817611B2 (en) Wireless local area network system
TWI425791B (zh) 在無線網狀網路中及匯聚媒體存取控制服務資料單位格式下之資料傳輸方法
US8737984B2 (en) WiMAX intra-ASN service flow ID mobility
WO2014040574A1 (fr) Procédé et système de délestage à base de transmission jointe multiréseau, et élément de réseau d'accès
WO2007089109A1 (fr) Procédé de transmission de messages dans des réseaux de communications
EP1875763A1 (fr) Interfonctionnement de reseaux de radio cellulaire et reseaux de donnees sans fil
US10159100B2 (en) Mechanism for establishing packet data network connection with multiple IP addresses
WO2007073696A1 (fr) Procede, appareil et systeme pour acces sans fil
JP2010531629A (ja) Ｈｒｐｄ信号リンクの確立方法
JP2001313672A (ja) ネットワークシステム、パケット中継装置、無線端末及びパケット処理方法
WO2011000234A1 (fr) Procédé d'établissement d'une session push (pousser), et système push et dispositifs associés correspondants
US20210044456A1 (en) Method for implementing gre tunnel, access point and gateway
WO2010130128A1 (fr) Procede, systeme et terminal d'acces a un noeud serveur de donnees par paquets
WO2023011245A1 (fr) Procédé de communication et appareil de communication
WO2014036728A1 (fr) Procédé de transmission d'interface radio et dispositif et système pertinents
CN110351890A (zh) 集中式单元-分布式单元架构下的通信方法、通信设备
JP4977315B2 (ja) 移動通信網システム及び移動通信方法
JP2019535218A (ja) パケット交換方法及び関連装置
WO2010088834A1 (fr) Procédé, dispositif et système de communication bimode basés sur wi-fi et wimax
WO2007003098A1 (fr) Méthode de classement de flux de trafic de commutation d’étiquette de protocole multiple
US10674565B2 (en) Communication method

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09802345

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09802345

Country of ref document: EP

Kind code of ref document: A1