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A method for establishing multicast tree in wireless ad hoc network

A technology of wireless ad hoc network and establishment method, applied in the field of multicast tree establishment of wireless ad hoc network, can solve the problem of low transmission quality of multicast routing protocol, and achieve the effect of avoiding invalid forwarding

Active Publication Date: 2019-05-28
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for establishing a multicast tree in a wireless ad hoc network to solve the problem that the transmission quality of existing multicast routing protocols is not high

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  • A method for establishing multicast tree in wireless ad hoc network
  • A method for establishing multicast tree in wireless ad hoc network
  • A method for establishing multicast tree in wireless ad hoc network

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Embodiment Construction

[0048] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0049] Such as figure 1 As shown, the multicast tree establishment method of the wireless ad hoc network provided by this embodiment includes the following steps:

[0050] S1, such as figure 2 As shown, in this solution, only the members of the multicast group can initiate the multicast service of the multicast group by default, and the absence of the group is not considered. If you want to send the multicast service, you must first join the multicast group. Therefore, first of all, the multicast service source node jud...

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Abstract

The invention discloses a method for establishing a multicast tree of a wireless ad hoc network. The method is based on the network layer MAODV protocol and IEEE 802.16 MAC (Media Access Control, Media Access Control) layer distributed scheduling technology, and the distributed scheduling mechanism is changed from the MAC Layer separation, integrated into the network layer multicast routing algorithm, when building a multicast tree, use the known resource information to select an appropriate tree building path, so as to build a multicast tree that reserves certain resources for multicast, avoiding business conflicts. In addition, the bandwidth application and allocation operation is integrated into the routing control message, and the resource allocation is completed while the route is established. The MAC layer performs data transmission according to the allocation result of the network layer, and does not need to be scheduled again. The present invention is different from the independent scheduling and repeated interaction mode of the existing MAC protocol, simplifies the scheduling process as a whole, can effectively save time and resources, and realize the improvement of service quality.

Description

technical field [0001] The invention relates to the field of wireless ad hoc networks. More specifically, it relates to a distributed scheduling technology based on network layer MAODV (MulticastAd hoc On-demand Distance Vector Routing) protocol and IEEE802.16 MAC (Media Access Control) layer A multicast tree establishment method for wireless ad hoc networks. Background technique [0002] Wireless mobile ad hoc network, also known as wireless mobile multi-hop network, or wireless ad hoc network for short, is a special network composed of a group of wireless mobile nodes that cooperate with each other, has no central control node, and does not depend on any fixed network equipment. [0003] In some application scenarios of wireless ad hoc networks, multicast communication is a very important communication method. For example, in formation communication, formation members need to communicate with each other, and at the same time, formation members need to receive information...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/761H04W40/04H04W40/18H04W40/24H04L45/16
CPCH04L45/16H04W40/04H04W40/18H04W40/248
Inventor 李旭姜宇嘉于莉何浩雄唐艺玮
Owner BEIJING JIAOTONG UNIV
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