Service-based consultation method in mobile ad-hoc networks
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A mobile self-organization and network technology, applied in the field of network information interaction, can solve problems such as waste of node resources and communication bandwidth, failure to reach consensus on negotiation results, etc.
Inactive Publication Date: 2012-02-08
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
However, the dynamic changes of the MANETs network environment and various sudden user applications make it impossible for nodes to reach an agreement on the ne
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Embodiment 1
[0073] Such as figure 1 As shown, a service-based negotiation method in a mobile ad hoc network includes the following steps:
[0074] S101: The negotiation starts, and at least one buyer in the network sends an offer signal to the seller;
[0075] S102: The buyer and the seller send negotiation signals to each other to negotiate a quotation, and the negotiation signals include an offer signal sent by the buyer and the seller and a waiting signal sent by the seller. During the negotiation and quotation process:
[0076] S102a) If the seller sends an exit signal, the negotiation fails and go to step S103;
[0077] S102b) If the seller sends a signal to the buyer to accept the offer, the negotiation is successful and go to step S103;
[0078] S102c) If there is only one buyer left in the negotiation process, and the seller cannot accept the buyer's offer, the seller sends a last offer signal:
[0079] If the buyer can accept, then return the offer signal: if the seller sends ...
Embodiment 2
[0127]In this embodiment, a network of 1km*1km is used, and one service seller node and 10 buyer nodes are randomly distributed. Simulate the MANETS network environment, and set the network to have the following properties: nodes can be moved after deployment, nodes communicate wirelessly, all nodes are isomorphic, each node has a unique address, and all nodes are time-synchronized.
[0128] Assuming that the negotiated service is data forwarding, the negotiation attributes include three items, which are data packet size, forwarding rate, and forwarding cost. Different benefit functions related to the three attributes are set for each buyer node to simulate different node resource situations. Two types of data packets are defined, the negotiation signal data packet is 512bit, and the negotiation attribute data packet is 1024bit. The transfer rate of these packets is 1Pkt / s.
[0129] The energy model used is C p For the communication cost, it is assumed that each node is e...
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Abstract
The invention discloses a service-based consultation method in mobile ad-hoc networks, comprising the following steps that: a consultation is started, and a buyer sends an offer signal to a seller; the buyer and the seller consult a quotation, which comprises the mutually sent offer signal and a waiting signal sent by the seller; at this time, if the seller sends a quit signal, the consultation is failed and is finished; if the seller sends an accept signal, the consultation is successful and is finished; if only one buyer is remained, and a) the seller can not receive an offer of the buyer, the seller sends a last offer query signal: if the buyer can accept, the offer signal is returned; if the seller sends the accept signal, the consultation is successful and is finished, or if the seller sends the quit signal, the consultation is failed and is finished; and if the buyer can not accept and sends a refuse signal, the consultation is failed and is finished; and if only one buyer is remained, and b) the buyer sends the refuse or quit signal, the consultation is failed and is finished. The service-based consultation method provided by the invention is advantaged in that: the network flow and the node energy consumption are reduced; and the consultation efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of network information interaction, in particular to a service-based negotiation method in a mobile ad hoc network. Background technique [0002] Mobile Ad hoc Networks (MANETs) is a centerless, wireless multi-hop, highly autonomous network that can be operated by a group of mobile terminals at any time and anywhere without the support of existing network infrastructure. Nodes build quickly. Because of its excellent characteristics such as self-organization, fast networking, dynamic topology, survivability and robustness, it has broad application prospects in military and civilian fields. [0003] Due to the limitations of mobile terminals in MANETs such as limited energy, low processing power, and small memory, there are some selfish users who are unwilling to consume additional resources and energy for other users to provide services (such as forwarding data packets, resource sharing, etc.) . The selfis...
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