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This paper presents a design and implementation method of living streaming system based on multi-service nodes collaboration. The system uses the entropy weighting method to dynamically determine the weight factor of each service node and uses the coordinator node to collect the load information of service nodes and perform global optimal distribution of loads. The collection terminal uses RTMP (Real...
Last-write-touch prediction can reduce cache-to-cache transfer latency by converting 3-hop misses into 2-hop misses in directory-based shared-memory multiprocessors. By predicting a last-write-touch and self-downgrading a cache block in advance, a processor can get the data from the memory directly and the coherence overhead is significantly reduced. In this paper, we propose a new low overhead last-write-touch...
The paper presents a solution to voice conflict of IP video intercom system and achieve voice communication by studying voice communication of IP intercom system. This solution applies G.711 used widely to code and decode and also applies UDP transmission protocol for real-time transmission. It solves the problems of voice-conflict, voice delay and voice's quality.
Recently, the network coding in cooperative communications has been categorized into two mainstreams, Digital Network Coding (DNC) and Analog Network Coding (ANC), which we both discuss in the article. First a brief survey of these two sub-branches is given. Then, to the very wireless characteristics fading and interference, DNC and ANC network coding way were proposed respectively, which aims at...
This paper proposes a new combinational technology which is feasible to apply physical-layer network coding (PNC) to wireless fading channel. The key step of PNC is that sources broadcast signals simultaneously without orthogonal scheduling. Naturally, the signals overlap in the free space at the receivers. Since the signals from different sources are mutual independent, rooted on this rational assumption,...
Unlike traditional routing schemes that route all traffic along a single path, multipath routing strategies split the traffic among several paths in order to ease congestion. It has been widely recognized that multipath routing can be fundamentally more efficient than the traditional approach of routing along single paths. Yet, most studies in the context of multipath routing focused on centralized...
This test introduces a method of the design and implementation of peasant-oriented information service system based on WAP (Wireless Application Protocol) and SMS (Short Messaging Service), terminal users can get personalized information services through mobile WAP, SMS and web. This paper introduces the system components, network architecture, interface design, the design of SMS, WAP and WEB site,...
It is essential to modeling and generating the background traffic in constellation networks simulation. A framework of generating of fractal shot noise driven Poisson process based aggregated flow level traffic for constellation networks was described in this article. In the model, the flow rate fluctuation was characterized by the BER of inter-satellite links and the congestion control strategy....
It is essential to modeling and generating the background traffic in constellation networks simulation. A framework of generating of fractal shot noise driven Poisson process based aggregated flow level traffic for constellation networks was described in this article. In the model, the flow rate fluctuation was characterized by the BER of inter-satellite links and the congestion control strategy....
It is known to all that how to select a proper mobility model is essential in simulating the performance of all kinds of protocols in ad hoc networks. In our real lives, each mobile node moves with a certain purpose rather than totally randomly. So the research based on the totally randomly moving mobility models seems meaningless to some extent. In this paper, we propose a novel mobility model based...
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