Bandwidth reservation method and device
A bandwidth and reserved bandwidth technology, applied in the field of communications, to solve problems such as end-to-end bandwidth reservation that is difficult to support real-time services
Active Publication Date: 2012-05-30
HUAWEI TECH CO LTD
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Problems solved by technology
However, there is currently a bandwidth reservation method on a single-hop path, and it is difficult to support end-to-end bandwidth reservation for real-time services in a multi-hop network
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[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0037] Figure 1A It is a flow chart of Embodiment 1 of the bandwidth reservation method of the present invention. Such as Figure 1A As shown, this embodiment includes:
[0038] Step 1: The source node sends a bandwidth reservation request message to the destination node. The bandwidth reservation request message is sent from the source nod...
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The invention provides a bandwidth reservation method and a device. The method comprises the following steps that: a bandwidth reservation request message is transmitted by a source node to a target node, the bandwidth reservation request message is sequentially transmitted to a next hop node until to the target node from the source node, the bandwidth reservation request message comprises the requested reservation bandwidth of the source node, and a node received the bandwidth reservation request message on a route from the source node to the target node determines and saves a potential conflict-free maximal transmission time slot set of the node which transmits the bandwidth reservation request message; and the source node receives a bandwidth reservation responding message and acquires a final transmission time slot set of the source node carried in the bandwidth reservation responding message, the bandwidth reservation responding message is sequentially transmitted to the source node from the target node to a previous hop node, and the target node or the node receiving the bandwidth reservation responding message determines the final transmission time slot set of the node according to the saved potential reservation conflict-free maximal transmission time slot set of the node. Due to the adoption of the method and the device, the conflict-free bandwidth real-time reservation of each node from the source node to the target node can be realized.
Description
technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a bandwidth reservation method and device. Background technique [0002] Wireless multi-hop networks can provide end-to-end long-distance communication by hopping through a series of intermediate nodes, while providing a sufficiently high data transmission rate. Compared with the distance between the sending end and the receiving end, the distance (per hop) between the nodes in the wireless Mesh network is relatively short, and each hop can achieve a much higher data transmission rate than direct communication, so that in High data transmission rates can also be supported in long-distance end-to-end communication systems. In a wireless multi-hop network, each node only needs to transmit a short distance, and the transmission power is relatively small, which greatly reduces the interference in the system and makes the frequency reuse more intensive. In addi...
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Inventor 李云庄宏成张欣
Owner HUAWEI TECH CO LTD