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In this paper we propose cooperative/noncooperative operation models for revenue seeking spectrum brokers who coordinate to manage access to the same spectrum bands in adjacent areas. We consider a setting where users of spectrum are involved in peer-to-peer links with QoS requirements. Each wireless transmission (link) is priced collectively by all revenue seeking brokers whose responsibility areas...
We designed a specific router which can provide the required level of QoS over NGN (next generation network) in this paper. We called this router 'QoS-Aware router', which consists of two parts, a class-based routing part and a flow-based routing part. QoS-Aware router enables data taking broad bandwidth or requiring high-level QoS to be processed immediately and not to be affected by other services...
In this paper, we study distributed power control in an interference network. In particular, distributed power control mechanisms are devised by exploiting a one-shot non-cooperative game based on a suitably chosen utility function. The utility is a function of quality of service (QoS) objectives defined in terms of fading-induced outage probabilities. Equilibrium analysis of the resulting power control...
In peer-to-peer (P2P) overlay networks, source peers holding multimedia objects can transmit the multimedia objects to receiver peers. In this paper, we discuss parallel types of multi-source streaming (MSS) models where a receiver peer can receive primitive objects of a multimedia object from multiple source peers which can support enough. A multimedia object is realized in a sequence of primitive...
Wireless mesh networks have been attracting significant attention due to its promising technology. It is becoming a major avenue for the fourth generation of wireless mobility. Communication in large-scale wireless networks can create bottlenecks for scalable implementations of computationally intensive applications. A class of crucially important communication patterns that have already received...
We introduce a model of a generalised multi-receiver radio network with quality-of-service (QoS) constraints. There are two key functions: (1) Ni is non-decreasing and homogeneous and gives i's QoS as function of its carrier-to-interference ratios at each of K receivers, (2) nu_ik is a semi-norm that gives the interference experienced by transmitter i at receiver k as function of the power vector...
There is a long line of research on measuring the quality of service (QoS) path characteristics of the Internet, such as available bandwidth, path capacity, packets reordering, delay and jitter. Most of the measurement techniques are based on active probing using pairs or trains of packets. The packets are either transmitted back-to-back or at a desired spacing (e.g., to achieve a certain rate). In...
Because different types of information contents have different requests for the QoS of transmission, the architecture of content-based distribution network (CBDN) is put forward in this paper. The network topology of CBDN is introduced. The working principle and key technologies of the architecture is explained in detail. According to the different requirements of the different types of information...
In this paper we have proposed HRSQM, heterogeneous receivers supporting QoS multicast, which is a distributed protocol that creates multicast tree for receivers with heterogeneous QoS requirements. It relies only on local states and does not use any global state. Furthermore, through exhaustive search and carefully selecting branch to connect the new node to the tree, the efficiency of tree is always...
In a chip multi-processor (CMP) with private caches, the last level cache is statically partitioned between all the cores. This prevents such CMPs from sharing cache capacity in response to the requirement of individual cores. Capacity sharing can be provided in private caches by spilling a line evicted from one cache to another cache. However, naively allowing all caches to spill evicted lines to...
In this paper, we propose QoS-constrained peer selection and nondisruptive rate adaptation schemes with considering shared bottleneck problem to provide a stable peer-to-peer live video streaming service during vertical handoff. In the proposed scheme, a QoS-constrained peer is selected by estimating bandwidth with active probing, and a reception rate converges to a stable state without any QoS degradation...
Macro-diversity - all base stations decode cooperatively each received signal - can mitigate shadow fading, and increase the capacity of a spread-spectrum communication network. Assuming that a terminal's transmission power contributes to its own interference, the literature determines whether a vector of quality-of-service targets is feasible through a simple formula, which is insensitive to the...
In the context of networks providing QoS guarantees, the end-to-end delay experienced by a packet is an important parameter. In this paper, we show that network coding can be used to decrease worst case end-to-end bounds when compared to a classical routing strategy. This result can be explained by the fact that network coding can cope with congestion better that classical routing due to its property...
This contribution addresses the case when live packet-switched video is used to enrich circuit-switched speech calls in mobile telephony. Circuit-switched and packet-switched transmissions generally operate on completely different transmission paths resulting in different QoS in terms of delay and loss rates. In this case, video and audio data recorded at the same time are not multiplexed together...
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