Method and system for cross-layer cooperation of cognitive wireless network

Abstract

The invention discloses a method and a system for cross-layer cooperation of a cognitive wireless network. The method includes the steps that a transmission quality criterion is determined; a final working layer needed by transmission is determined, and various layers of information determined to be needed by a transmission scheme is transmitted to the final working layer; on the final working layer, the transmission scheme meeting the transmission quality criterion is chosen according to the various layers of information; and the chosen transmission scheme is estimated, the optimal scheme is determined according to an estimation result, and data transmission is carried out on the final working layer through the optimal scheme. According to the method and the system, the defect that a traditional cross-layer design scheme only stresses on single object optimization without consideration of network overall performance is overcome, and mutual conflict of various self-adaptive processes is avoided.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and system for cross-layer cooperation of a cognitive wireless network. Background technique [0002] In the layered design of traditional networks, each layer of the protocol stack is designed and operated independently. Network protocol designers do not need to design a single, huge protocol to specify complete details for all forms of communication, but only need to divide the communication problem into multiple levels, and then design a relatively independent protocol for each level. Doing so makes the design, analysis, timing, and testing of each protocol easier. A main principle of protocol partitioning is to ensure that the target system is effective and efficient, thus simplifying the difficulty of network protocol development and implementation. [0003] However, in a wireless network, the uncertain factors of the wireless communication environmen...

AI Technical Summary

Problems solved by technology

The traditional hierarchical design considers the wired network and does not consider the time-varying characteristics of the wireless environment, which makes the strict hierarchical design not suitable for wireless networks

In addition, the protocol stack based on the traditional strict layered design can only communicate in a fixed way between adjacent layers, which makes the protocol stack unable to manage wireless resources as a whole, and also prevents the overall network performance from being optimized.

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