認(rèn)知無線電與認(rèn)知網(wǎng)絡(luò)ch08認(rèn)知網(wǎng)絡(luò)的跨層設(shè)計(jì)(編輯修改稿)
2025-02-02 17:27 本頁面
【文章內(nèi)容簡(jiǎn)介】 無線認(rèn)知節(jié)點(diǎn)接口，負(fù)責(zé)鏈接認(rèn)知節(jié)點(diǎn)和黑板。 控制器負(fù)責(zé)接收信息，對(duì)消息進(jìn)調(diào)度，并指導(dǎo)選擇合適的操作。 知識(shí)庫(kù)包括一系列的生產(chǎn)規(guī)章和執(zhí)行這些規(guī)則的推理機(jī)。 控制器和知識(shí)庫(kù)和查詢處理器進(jìn)行交互，以查詢?nèi)罩镜姆绞教幚硐ⅰ? 2022/2/3 10/15 Challenges of Cognitive Crosslayering(1)[1] The main challenges that the design of the ultimate CognitiveCrosslayer Architecture shall meet are modularity,interpretability, imprecision, scalability and plexity. CrossLayer—— breaking the traditional encapsulation of munication of protocal stack to enable a more effective optimization of the overall munication quality. Unfortunately, the current state of the art in wireless munication systems research is still quite far from an effective formulation of the ultimate Cognitive Crosslayer Architecture. In the last decade, crosslayer optimization strategies have been widely studied and adopted, but in most cases the aim was to achieve performance enhancements in specific scenarios. For instance, a vast number of those crosslayer solutions had the aim of improving the performance of a particular multimedia application or transport protocol over a given radio link such as or UMTS. In most cases these solutions cannot be reused for different wireless technologies or applications without a significant redesign effort. 2022/2/3 11/15 Challenges of Cognitive Crosslayering(2) ? Modularity: traditionally, protocol encapsulation has always been effective in providing modularity, ., in allowing independent implementation of all layers (., wireless interfaces, drivers, protocol stacks, applications). In the definition of a crosslayer framework, care should be taken in preserving the modularity of the architecture, in order to allow ponents with crosslayer capabilities to be designed independently of each other, and to be used interchangeably. Abstracting from the underlying technology is a key prerequisite to this concept of m
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