This article proposes an analytical model of a system with priorities servicing a mixture of different elastic traffic streams. The model presented in the article was developed as the extension of earlier works published by the authors. It utilizes the concept of equivalent bandwidth and then, following bandwidth discretization, uses the dependencies introduced on the basis of the assumptions adopted for the generalized Kaufman-Roberts formula and for the model of a full-availability group with traffic compression. The article presents a possibility of using the proposed model to model the radio interface in a multi-service mobile network and provides an example of the above with the interface of an LTE network. Since the proposed model is an approximate one, the results of the calculations are compared with the results of simulations. A comparison of the results confirms an acceptable level of accuracy of the model. The model can be successfully used in the analysis and design of links and nodes of telecommunication and computer networks.
In cellular networks, cells are grouped more densely around highly populated areas to provide more capacity. Antennas are pointed in accordance with local terrain and clutter to reduce signal shadows and interference. Hardware parameters are easily set during installation but difficult to change thereafter. In a dynamic environment of population migration, there is need to continuously tune network parameters to adapt the network performance. Modern mobile equipment logs network usage patterns and statistics over time. This information can be used to tune soft parameters of the network. These parameters may include frequency channel assignment or reuse, and transmitter radiation power assignment to provide more capacity on demand. The paper proposes that by combining the frequency and power assignments, further optimisation in resource allocation can be achieved over a traditional frequency assignment. The solution considers the interference, traffic intensity and use of priority flags to bias some edges. An Edge Weight Power and Frequency Assignment Algorithm is presented to solve the resource allocation problem in cellular networks. The paper also analyses the performance improvements obtained over that of the Edge Weight Frequency Assignment Algorithm. The results show that the proposed algorithm improves the performance of the Edge Weight Frequency Assignment Algorithm depending on the initial structure of the graph.
In the skeptical tradition self-consciousness was transparent and it served as a basis for expressing doubts and developing arguments leading to certainty. After the linguistic and naturalistic turns, contemporary philosophy developed skeptical arguments against certainty and epistemic priority of the data of self-consciousness (both reflective and pre-reflective). Self-reflection reports on the stream of consciousness ex post, but the reports are meager and dependent on subject’s conceptual scheme, while the pre- -reflective data is unclear. Two contemporary skeptical hypotheses have been developed: H. Putnam’s content externalism hypothesis and so-called Kripkenstein’s quus hypothesis. I put forth the question what kind of self is immune to erroneous misidentification. The immunity seems to be limited to the contentless self, reducible to the pre-discursive feeling of one’s own existence. There is no guarantee that any content whatsoever can be attributed to self without error. I cannot negate that I exist any more than I can negate that something external exists, but any description of either is fallible. So the content of self-consciousness is not in an epistemically better position than the content of external perception.
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