Encoding method and device for reverse path
A technology of path coding and coding method, which is applied in the field of reverse path coding method and device, and can solve problems such as difficult reconfiguration of nodes by network managers
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no. 1 example
[0030] figure 2 It is a flow chart of a reverse path encoding method in the first embodiment of the present invention. The method of this embodiment can be executed by a reverse path encoding device, which can be implemented by hardware and / or software, and can generally be integrated in each node of the wireless sensor network. Such as figure 2 As shown, the method in this embodiment specifically includes the following operations:
[0031] 210. The current node generates its own path encoding parameters.
[0032] In this embodiment, the current node refers to a specific sensor node in the wireless sensor network, and the node may have 0 or 1 parent node and 0, 1 or more child nodes.
[0033] Among them, the current node can generate its own path coding parameters according to the child node coding control information sent by the parent node, or can generate its own path coding parameters according to the set indicators, which is not limited (the specific generation proce...
no. 2 example
[0063] Figure 5 It is a flow chart of a reverse path encoding method according to the second embodiment of the present invention. This embodiment is optimized on the basis of the above embodiments. In this embodiment, it further preferably includes: the current node generates a sub-node encoding information table according to the sub-node encoding control information, wherein, in the sub-node encoding information table Including a confirmation identification bit corresponding to the child node, and the confirmation identification bit is initially set to an unconfirmed state;
[0064] The method further preferably includes: the current node receives the encoding confirmation information sent by the sub-node; if the encoding confirmation information is consistent with the information recorded by the sub-node in the sub-node encoding information table, encoding the sub-node The confirmation identification bit corresponding to the child node in the information table is changed t...
no. 3 example
[0081] Figure 6 It is a flow chart of a reverse path encoding method according to the third embodiment of the present invention. This embodiment is optimized on the basis of the above-mentioned embodiments. In this embodiment, it further preferably includes: the current node acquires the number of unallocated logical positions according to the logical position request information sent by the child node to be encoded;
[0082] If the current node determines to include at least one unallocated logical position, then generate sub-node encoding control information corresponding to the sub-node to be encoded, and send the sub-node encoding control information to the sub-node to be encoded; otherwise, The sub-node coding space is doubled (the effective coding length is increased by 1 bit), and the new sub-node coding space is sent to all associated sub-nodes, so that the sub-nodes can regenerate their own path coding parameters.
[0083] Correspondingly, the method of this embodim...
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