Rapid roaming optimization method for use in MESH network routing protocol
A technology of routing protocol and optimization method, applied in the field of communication, can solve the problems of increased number of lost packets and large delay waiting for updates.
Inactive Publication Date: 2015-12-23
尚一民
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[0004] The purpose of the present invention is to propose a fast roaming optimization method in the MESH network routing protocol to solve the problem that the time delay waiting for update is too large in the roaming process, resulting in an increase in the number of lost packets, and improve the transmission performance of the system
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[0023] In order to make the object, technical solution and advantages of the present invention clearer, the solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0024] The invention optimizes the roaming process in the existing MESH network routing protocol.
[0025] refer to figure 1 , the MESH network is composed of a wireless controller AC, a wireless access point AP and a client C, wherein the wireless controller AC controls and manages the wireless access point AP in the MESH network; the wireless access point AP is provided with 3 types Type: one is the wireless access point MPP connected to the wireless controller AC through a cable, the other is the wireless access point MP connected to the MPP but not connected to the client C, and the third is the wireless access point providing access services Entry point MAP. These three types of wireless access point AP constitute the framework of the MESH ...
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The invention discloses a rapid roaming optimization method for use in a MESH network routing protocol. According to the implementation scheme, the method comprises the following steps that: after a client C enters a roaming state and a first wireless access point AP1 receives a roaming notification sent by a second wireless access point AP2, the first wireless access point AP1 immediately forwards a received data packet to the second wireless access point AP2, deletes an address of the client C in a local conversion table of the first wireless access point AP1, and adds a current address of the client C into a global conversion table; the first wireless access point AP1 transmits a broadcast packet with a roaming banner at a next time interval in order that other nodes in a network can be informed that the client C is at a roaming stage currently; and the second wireless access point AP2 transmits the broadcast packet and informs the other nodes in the network of information indicating that connection is established between the client C and the second wireless access point AP2, and the other nodes in the network establish an optimal link according to the MESH network routing protocol. Through adoption of the method, the problem of large packet loss number due to long time delay in address update waiting of a wireless access point (AP) in a current roaming process is solved.
Description
technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a fast roaming optimization method, which can be used for the improvement of the MESH network routing protocol. Background technique [0002] In a wireless MESH network with multiple clients C, a proactive protocol is usually used for addressing and routing. The proactive protocol periodically sends detection packets to calculate the best next-hop route. The cycle length is called a detection packet interval, which can greatly reduce the delay in the initial stage of network establishment. Typical proactive protocols include BATMAN and OLSR. The proactive protocol transmits detection packets containing routing information through a flooding mechanism, and each wireless access point AP obtains a routing table based on the detection packet information and calculates the best route. [0003] In the MESH network, client C has mobility. In a practical application,...
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IPC IPC(8): H04W40/02H04W68/00
CPCH04W40/02H04W68/00
Inventor 薛楠覃国珍毛伯敏张连委温宇驰寇强杜正雅王晓宇李志超
Owner 尚一民