Neighbor discovery method and system

Abstract

The invention provides a neighbor discovery method and system. The method comprises the steps: carrying out the scrambling of data through employing a scrambling code, and transmitting the data to a receiving node so as to enable the receiving node to extract the scrambling code from the data, and detect the energy of the scrambling code; establishing a neighbor list according to the energy of thescrambling code. When the method is applied to a receiving node, the method comprises the following steps: receiving data sent from a sending node, the data being scrambled by the sending node in advance by using a scrambling code; extracting scrambling codes from the data, and detecting the energy of the scrambling codes; establishing a neighbor list according to the energy of the scrambling code. According to the method, scrambling codes are used for scrambling sent data, the one-to-one corresponding relation that the scrambling code detection distance is far larger than the data transmission distance and a user corresponds to the scrambling codes is fully utilized, the neighbor detection range of network nodes is expanded, the nodes can detect neighbor nodes outside a two-hop range only through broadcasting of a one-hop HELLO message without extra expenditure, and a multi-hop neighbor information list is established and updated.

Description

Technical field[0001]The present invention relates to the field of communication technology, and more specifically, to a neighbor discovery method and system.Background technique[0002]In non-central wireless networks such as mobile ad hoc networks and sensor networks, the main functions of neighbor discovery include neighbor listening, establishment and maintenance, and the neighbor relationship of nodes and the status of neighbor nodes are obtained through the interaction of neighbor discovery data between nodes. Information provides the basis for network topology control, routing, data transmission, etc.[0003]In the existing wireless network networking technology, the establishment of neighbor relationships and the acquisition of neighbor node status are mainly obtained by nodes periodically broadcasting their own and neighbor information. Researchers usually call such messages as Hello messages. Nodes in the network first determine the link status between nodes by exchanging Hell...

AI Technical Summary

Problems solved by technology

[0004] According to the existing neighbor discovery method, the node establishes the neighbor relationship and state information of N+1 hops, and needs to broadcast related information within the range of N hops, which increases the system overhead and network burden

In addition, the existing neighbor discovery methods do not fully consider and utilize the relationship between transmission distance and transmission rate, and do not fully consider the security of wireless transmission.

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