125 results about "Wireless LAN controller" patented technology

The invention discloses a wireless network deployment method and a wireless access point, and the method comprises the steps of using one wireless access point (AP) and more than one wireless controller (AC) for respectively establishing tunnel connection, leading the AP to independently download and maintain a set of AP configuration for each tunnel, constructing the corresponding basic service setting (BSS) for each tunnel, providing wireless network services through the BSS, determining a forwarding tunnel according to an ID of the BSS of a wireless terminal when the AP receives uplink dataof the wireless terminal and sending the forwarding tunnel determined through the uplink data to the corresponding AC. The method and the wireless access point lead one AP to be capable of establishing the connection with a plurality of AC, thereby avoiding the network performance degradation due to that a plurality of operators repeatedly deploy the AP in the same region.

The invention provides a management method in a wireless local area network (WLAN) and a wireless access controller (AC). Two or more wireless ACs and wireless access points (AP) exist in the WLAN. A management AC and business ACs are appointed from all ACs of the WLAN; and the management AC is used for managing all of the business ACs and APs in the WLAN in such a manner that the management AC determines the business AC to be accessed to the AP, and transmits the AP information to the determined business AC, so that the required AP is accessed to the business AC according to the received AP information.

A roaming system using a wireless access controller to select an access point and the method thereof are provided. By sending a signal strength between a station and access points (AP's) detecting the station from each AP to a wireless access controller (WAC), and notifying the station to select one of the APs to connect according to the signal strength between the station and each AP by the WAC, the system and the method can keep connection quality and transmission efficiency of a station, and achieve the effect of fast roaming.

An apparatus and method for responding to unlicensed network failure. A failure in a connection to an unlicensed wireless local area network controller can be detected. A wireless local area network access point connection to the unlicensed wireless local area network controller can be released. An attempt can be made to access wireless wide area network services.

The invention discloses a method and a system for quickly returning a heterogeneous system, a wireless terminal and a wireless network controller. The method comprises the following steps of: receiving quick returning indication information of a second wireless communication system from a first wireless communication system by a multi-mode terminal, wherein the quick returning indication information is used for indicating whether to allow the multi-mode terminal to quickly return to the first wireless communication system from the second wireless communication system and the first wireless communication system and the second wireless communication system are heterogeneous systems; after the multi-mode terminal is switched or reselected to the second wireless communication system, receiving adjacent cell information of the first wireless communication system in the current service cell; and quickly reselecting to the first wireless communication system by the multi-mode terminal according to FRI (Frame Relay Interface) information and of the second wireless communication system and the adjacent cell information of the first wireless communication system. The system has equivalent application effect to the functions and the performance of Fast Return in a GSM R6 (Global System For Mobile Communications For Railway) protocol, avoids the update of BSC(Base Station Controller) in a GSM (Global System for Mobile Communications) and saves a great amount of function update expense for operators.

The invention discloses a method for controlling a wireless mesh network with a wireless access controller, relating to the field of communication. The method comprises the following steps that: (a) a first mesh node device in an accessed state collects MAC (Media Access Control) addresses of at least one second mesh node device; (b) the first mesh node device transmits a first MAC list containing the collected MAC addresses to the wireless access controller; (c) the wireless access controller queries the MAC addresses allowed to access the wireless access controller in the first MAC list based on prestored configuration information; (d) the wireless access controller transmits a second MAC list containing the queried MAC addresses to the first mesh node device; and (e) the first mesh node device establishes point-to-point links with the second mesh node devices corresponding to all the MAC addresses in the second MAC list. The accessed state means that the mesh node device is registered to the wireless access controller.

The invention provides a data distribution method and device in a wireless heterogeneous network and a wireless network controller. The method comprises receiving a service request sent by UE (user equipment), and acquiring data corresponding to the service request; distributing a wireless access technology link circuit for a TCP (Transmission Control Protocol) stream in at least two wireless access technology link circuits after determining that the data is a TCP stream; and transmitting the data on the distributed wireless access technology link circuit. The embodiment of the invention can ensure the sequential transmission of data of the same TCP connection.

The invention relates to a discovery and correlation method of a wireless access controller in a wireless communication network, which comprises the following steps: a) obtaining an IP address list of the wireless access controller according to a preset wireless access controller discovery mode, and using the obtained IP address list as an IP address list of a local wireless access controller; b) extracting a first IP address in the IP address list of the local wireless access controller; c) sending discovery request messages to the extracted IP address; d) extracting a next IP address in the IP address list of the local wireless access controller if a discovery response message is not received in the preset time, and then, returning the step c); otherwise, e) inserting the IP address list of the wireless access controller into the head of the IP address list of the local wireless access controller if the received discovery response message contains the IP address list of the wireless access controller, then, returning the step b), and otherwise, using the wireless access controller sending the discovery response message as a correlation wireless access controller.

The invention discloses an underground wireless communication method and a system. The invention takes a lean AP mode as the network form of a wireless network, a wireless controller (AC) manages the lean AP intensively, the lean AP automatically converts into a fat AP when a problem occurs in the wireless network or the wireless controller (AC) is out of touch, and the normal operation of the network is ensured; when the connection of the wireless network is recovered, the fat AP is converted into the lean AP again so as to enhance the service quality of the system; and the wireless controller (AC) can transmit a special instruction to the fat AP, the fat AP receives the instruction, a corresponding motion is executed, and the functions of switching the fat/lean mode of the AP and setting the frequency band and the channel of the fat AP are realized by the wireless controller (AC). The system is a wireless voice communication technology with easy management and higher voice quality. The method can effectively improve the underground wireless transmission quality, enhance the success rate of roam switching and reduce the switching time.

The invention discloses an access control method, a core network and a wireless network controller. The method comprises the following steps: the core network sends a notification message to user equipment, wherein the user equipment at least supports two types of wireless access technologies; and the notification message carries the preferable wireless access technology type information of the user equipment. The invention achieves the effect of optimizing the network resource service efficiency during the process of hybrid networking by multiple wireless access technologies.

The invention relates to a fast switching method based on roaming of an 802.11 standard wireless network, the 802.11 standard wireless network comprises more than two wireless access points, a wireless controller, an 802.1X authentication server and a wireless client end, and in the switching method, when the wireless client end and a first wireless access point finish 802.11 standard authentication and are related, a unicast master key is submitted to the wireless controller by the first wireless access point, sent to other wireless access points (AP2, AP3...APn) by the wireless controller and stored, therefore, when the wireless client end is in a roaming process, only one complete 802.1X identity authentication is needed, and when switching to other wireless access points, only four hand-shakes are needed to finish the switching among the wireless access points, thus reducing the pressure of the authentication server and realizing fast switching.

The invention provides a wireless access control method, a wireless access point and a wireless access controller. The wireless access control method comprises the steps that the wireless access point (AP) broadcasts discovering request messages to wireless access controllers (ACs) of an AC pool set; the AP receives a discovering response message sent by a first AC in the AC pool set, wherein the discovering response message contains a virtual Internet protocol (IP) address of the first AC; The AP sends a first address resolution protocol (ARP) message to the first AC according to the virtual IP address of the first AC; the AP receives an ARP response message sent by the first AC, wherein the ARP response message contains a media access control (MAC) address of the first AC; the AP uses the MAC address of the first AC as a second-layer destination address, and uses the virtual IP address of the first AC as a third-layer destination address to send out wireless access to the first AC. The wireless access control method, the wireless access point and the wireless access controller effectively solve the technical problems of being high in requirement for managing the AC, and high in risk of single points of failure in the prior art.

The invention discloses a method, a device and wireless access point equipment for realizing the hot backup of a wireless controller. The method comprises that: an access point (AP) performs the hot backup with the access controller (AC) connected with the AP; when detecting the AC fails, the AP informs the other APs connected with the AC of switching to MESH network connection, provides a service for a wireless client by a MESH network with the other APs and backs-up the access information of the client during the failure of the AC; and when detecting the AC is recovered from the failure, the AP synchronizes the access information, backed-up during the failure of the AC, of the client to the AC, and recovers communication with the AC together with the other APs. By the method, the deviceand the wireless access point equipment, the hot backup of the AC is realized by utilizing the APs connected with the AC under the condition of not increasing the number of the AC so as to solve the problem of relatively higher networking cost caused by the needs of the hot backup in a plurality of ACs in the prior art.

Disclosed is a wireless access point safe authentication method and system. The method comprises transmitting a discovery request message from a wireless access point to a wireless controller; receiving the discovery request message from the wireless controller, analyzing the discovery request message to obtain the serial number and the MAC (media access control) address of the wireless access point, and transmitting a discovery responding message to the wireless access point; receiving the discovery responding message from the wireless access point and analyzing the discovery responding message to obtain the IP (Internet protocol) address information of the wireless controller, binding the IP address information with the wireless controller, and transmitting a connection request message to the wireless controller; after receiving the connection request message from the wireless controller, determining whether the serial number and the MAC address of the wireless access point are matched with a prestored serial number and a prestored MAC address; if so, establishing a communication channel between the wireless controller and the wireless access point. By taking that whether the serial number and the MAC address of the wireless access point are matched as the access basis, the wireless access point safe authentication method and system prevents unallowed wireless access points from access to the wireless controller, thereby improving the authentication accuracy.

The invention provides a network congestion treatment method and system. The method comprises the following steps: acquiring the central processor occupancy rate of a wireless network controller and the user equipment capacity of a forward access channel; according to the central processor occupancy rate and the user equipment capacity, respectively adjusting the dispatching priority and the dispatching proportional factor of a wireless resource control protocol connecting rejection message and a wireless resource control protocol connecting building message. According to the invention, dispatching priority and the dispatching proportional factor of the wireless resource control protocol connecting rejection message are adjusted to enhance the capability of inhibiting a UE access network and immediately reduce the UE access frequentness; the dispatching priority and the dispatching proportional factor of the wireless resource control protocol connecting building message are adjusted to enhance the capability of UE accessed into other networks, immediately branch UE to other system networks and effectively relieve the network congestion problem.

Provided are a system and a method for testing a wireless access controller. The system comprises a wireless access point simulation unit and a subscriber station simulation unit. The wireless access point simulation unit is configured for simulating multiple wireless access points, and is in communication with the wireless access controller through the simulated wireless access points to test performance of the wireless access controller and record problems generated during communication between the wireless access points and the wireless access controller. The subscriber station simulation unit is configured for simulating multiple subscriber stations, and is in communication with the wireless access controller through the simulated subscriber stations to test performance of the wireless access controller and record problems generated during communication between subscriber stations and the wireless access controller. By the system and the method, the wireless access controller can be tested easily and conveniently.

The invention discloses a wireless controller heat backup switching method, a wireless controller heat backup switching device and a wireless controller which are used for enhancing the robustness of a wireless network and reducing the waste of network resources, wherein the wireless controller heat backup switching method comprises the following steps that the initial number of initial on-line access points (APs) is counted; whether a CAPWAP tunnel between the AP is abnormal or not is respectively judged for each on-line AP; every time when the condition that the CAPWAP tunnel between any one on-line AP is abnormal is judged, the number of the current on-line APs is subtracted by 1, and the initial value of the number of the current on-line APs is the counted initial number of the initial on-line APs; and when the number of the current on-line APs meets a preset switching condition, heat backup switching is triggered.

The invention provides a method, device and system for multicast service transmission control in a wireless local area network system, wherein the wireless local area network system comprises a wireless local area network controller and a plurality of wireless local area network access points which are controlled by the wireless local area network controller, the wireless local area network controller configures the multicast service control of the wireless local area network access points, and the wireless local area network access points inquire and receive multicast Ethernet data frames according to the configuration in a local Ethernet data frame mode, convert the received multicast Ethernet data frames into data frame formats which are suitable for being received by a wireless local area network client side, and send the data frame formats. According to the method, the device and the system, network bandwidth resources can be effectively saved and the configuration cost of a wireless local area network can be saved.

The invention relates to an ARP (address resolution protocol) attack centralized detection and defense method for a wireless controller system. The method comprises the following steps that S01, all flow rate data of wireless terminals STA associated onto wireless access point equipment AP are sent to a wireless controller AC by the wireless access point equipment AP via a CAPWAP transmission tunnel, and in addition, the detection and the processing of ARP message legitimacy are carried out in the wireless controller AC; S02, legal data is retransmitted by the wireless controller equipment AC according to network topologies. The ARP attack centralized detection and defense method has the advantages that ARP messages are dynamically monitored on the wireless controller in real time, only the legal ARP messages are processed and retransmitted, an ARP attach source is directly switched off on AC equipment, the spreading of attack messages in a wireless local area network is avoided, and the legality of the ARP messages received by other equipment in the wireless local area network is ensured, so the goals of defending the ARP attack in a centralized way and guaranteeing the safety of the wireless local area network are realized.

The invention relates to a wireless remote controller and aims at providing a wireless remote controller. The remote controller has strong antijam capability, and can realize one to more control or more to one control. The invention has the technical scheme that the wireless remote controller is provided with a microprocessor chip, a keyboard, a wireless receiving and transmission module and an antenna, the keyboard is connected with an I/O opening of the microprocessor chip in a matrix mode, the wireless receiving and transmission module is connected with the microprocessor chip, the antenna is connected with the wireless receiving and transmission module, and the memory of the microprocessor chip has an MAC address corresponding to the wireless remote controller. The wireless remote controller has the MAC address which is unique in the world and is to be used as fingerprints for identifying binding identity with a controlled device. One wireless remote controller can realize the reliable remote control of a plurality of controlled devices by saving one MAC address of the wireless remote controller in the controlled devices.

The invention discloses a wireless communication device, a virtual reality photosphere and a virtual reality system. The wireless communication device comprises a micro-controller, a hardware interface, a first wireless chip and a second wireless chip; the hardware interface, the first wireless chip and the second wireless chip are separately connected to the micro-controller; the first wireless chip is used for being wirelessly connected to the first kind of wireless equipment; the second wireless chip is used for being wirelessly connected to the second kind of wireless equipment; the hardware interface is used for being connected to an extension interface of a virtual reality helmet; the micro-controller sends data received by the first wireless chip and the second wireless chip to the virtual reality helmet through the hardware interface; therefore, the original single-function virtual reality helmet, which only can play audios and videos, can be compatible with wireless extension equipment, such as a wireless handle controller and wireless photographing equipment; the communication problem of the virtual reality helmet and wireless accessories can be solved; and thus, application scenes of virtual reality products are enriched.

The invention provides a method and a system for defending denial of service attack, a wireless access point and a wireless controller. The method comprises the following steps that: the wireless controller receives a first message of a client forwarded by the wireless access point; the wireless controller judges whether the first message is an attack message or not according to a receiving signal intensity indication threshold which corresponds to the client and is returned by the wireless access point; and the wireless controller directly discards the first message when determining that thefirst message is the attack message. By the method and the system for defending the denial of service attack, the wireless access point and the wireless controller which are provided by the invention, defense against a denial of service (DOS) attack can be realized, the client cannot be off-line or a wireless access service cannot be interrupted due to the DOS attack to the message, and the service quality of the wireless access of the client is improved.

The invention provides a switching control method, a wireless network controller and an access node. The switching control method comprises the steps of detecting whether quality of a signal, on the access node adjacent to the current access node, of user equipment is higher than that of a signal, on the current access node, of the user equipment, and judging whether the user equipment is switched from the current access node to the adjacent access node on the basis of the movement speed of the user equipment when the situation that the quality of the signal, on the adjacent access node, of the user equipment is higher than that of the signal, on the current access node, of the user equipment is detected. Therefore, efficient switching control can be achieved, the frequency of unnecessary switching is reduced, the wireless signaling overheads are reduced, system resources are reasonably distributed, and the advantages of a multi-layer network system is made full use of.

The invention discloses a method for balancing wireless local area network loads by a wireless access controller, and the wireless access controller receives information of a wireless terminal actively reported by a wireless access point (AP) when the wireless terminal in the wireless local area network sends a Probe Request message to the wireless AP. The method is characterized by comprising the following steps: (1) when the wireless terminal begins to associate, the wireless access controller (AC) performs load balancing treatment on the current wireless terminal based on the currently collected information; or (2) the wireless AC checks the load conditions of wireless AP associated with all on-line wireless terminals at frequent intervals and performs load balancing treatment based on the load conditions. The method in the invention can better cope with the condition that wireless network topology changes abruptly and has good actual load balancing effect.

The invention provides a wireless access method and a wireless access controller (AC), wherein the wireless access method comprises the steps of: obtaining an access request message from an access point (AP); judging whether a preset overtime stamp runs out, if so, resetting the overtime stamp and setting a total number of APs which are accessed in a current period as 1, and if not, judging whether the total number of the APs which are accessed in the current period is more than or equal to a preset threshold for the number of periodically accessed APs, if so, returning a rejection message to the AP, and if not, returning a permission message to the AP. According to the wireless access method provided by the invention, by controlling the number of APs which have been already accessed and a total number of APs which are being accessed in an access period, the APs limited by the method can be responded normally when each CAPWAP (Control And Provisioning of Wireless Access Points) channel is established, and the phenomena of disconnection and reconnection of the channel due to heavy load of a CPU (Central Processing Unit) can be avoided; therefore, the access rate of the APs is increased.

The embodiment of the present invention provides a wireless local area network anti-interference method applied to a wireless access system composed of a plurality of wireless access points (AP) which are deployed based on a fixed spacing row-column matrix. The method comprises the following steps of obtaining the signal intensity indication RSSI value of each AP received by other AP during a message sending process; according to the RSSI value, adjusting the current sending power of each AP; according to the RSSI value and the current sending power, adjusting the energy detection CCA threshold value of each AP; after the current sending power and the CCA threshold value are adjusted, indicating each AP to adjust the sending speed, so that each AP sends a message according to the adjusted sending speed. Meanwhile, the present invention also provides a wireless local area network controller. According to the present invention, the throughput of a wireless local area network under a dense deployment environment is improved.