radio resource management in cellular systems

... centres, in order to achieve centralised processing, collaborative radio, real-time cloud computing * Correspondence: sina.khatibi@inov.pt Department of Electrical and Computer Engineering, Instituto ... replacement by VMs in data centres provide high flexibility, resource efficiency, and cost reduction Modelling of virtual radio resource management The management hierarchy of virtual radio resources ... Rushil, Cloud computing in mobile networks - case MVNO, in Proc of ICIN’11 - 15th international conference on intelligence in next generation networks, Berlin, Germany, 2011 A Klein, C Mannweiler,

Ngày tải lên: 02/11/2022, 08:53

... ADVANCED TOPICS IN SCIENCE AND TECHNOLOGY IN CHINA ADVANCED TOPICS IN SCIENCE AND TECHNOLOGY IN CHINA Zhejiang University is one of the leading universities in China In Advanced Topics in Science ... real-time computing, 26, 40 Real-Time Control Systems, 3, real-time scheduling, 6, 12 real-time systems, 3, reference input, 43, 161 resource constraints, 16, 18 resource reclaiming, 168, 181 resource ... flexible QoC management in dynamic environments with uncertainty in resource availability A number of new approaches to flexible management of the computing and/or communication resources in Real-Time

Ngày tải lên: 01/01/2014, 18:47

... RESOURCE ALLOCATION IN CELLULAR CDMA SYSTEMS WITH CROSS-LAYER OPTIMIZATION YAO JIANXIN NATIONAL UNIVERSITY OF SINGAPORE 2005 RESOURCE ALLOCATION IN CELLULAR CDMA SYSTEMS WITH ... applied without disturbing the integrity... determine the intra- and inter-cell interference and can further influence both the reverse and forward links capacities in CDMA systems Soft handoff ... from multiple BSs in assigning... combination, etc., to the link layer QoS in both the reverse and forward links Arrowhead 2 represents the sharing of the outage in the link layer which

Ngày tải lên: 16/09/2015, 15:53

... and training systems become unlinked during conflict ● Financial and non-financial incentives to attract and retain health workers in rural and conflict-affected areas within a competitive incentive ... use comparable incentives in the longer term In- service training ● Understanding how wider health system factors can facilitate or constrain efforts to scale-up in- service training interventions ... failing to meet their intended objectives of attracting, motivating and retaining health workers Pre-service education and ● Sustainable strategies and policies to attract, train and training

Ngày tải lên: 02/11/2022, 11:40

... water management decision makers in evaluating water policies and developing sustainable water resource management plans WEAP operates following the basic principles of water balance accounting ... as alarm indicators and sharing of water deficit Water resources management is carried out by operating rules, which tend to maintain similar water levels in reservoirs, based on the initial reservoir ... regarding supply-demand water allocation interactions and will become invaluable in the assessment of the impacts on water operating rule modifications in order to set sustainable water management

Ngày tải lên: 05/09/2013, 14:58

... ballooning cases or hypervisor swapping in the swapping cases Since SPECjbb is an extremely memory intensive... sampling rate can be adjusted by changing Mem.SamplePeriod in ESX advanced settings ... machine is in a resource pool, the resource pool configuration is also taken into account when calculating... largely determined by the virtual machine memory hit rate In this instance, ... physical pages inside the virtual machine and pins them, as shown in Figure 6 (b). Here, “pinning” is achieved through the guest operating system interface, which ensures that the pinned pages

Ngày tải lên: 17/03/2014, 15:20

... consulting, controlling, communication consulting, marketing, information management, outplacement consulting, human resource management, management consulting, project management, ... services within... questions regarding the intention and effectiveness of training in consultancies Is the training aimed at delivering knowledge or at developing skills? And is the training more ... materials management, but also data linking in companies and organizations of any size Projects to expand business activities via the Internet, socalled e-Business, play an increasingly important

Ngày tải lên: 28/06/2014, 00:20

... consulting, controlling, communication consulting, marketing, information management, outplacement consulting, human resource management, management consulting, project management, ... services within... questions regarding the intention and effectiveness of training in consultancies Is the training aimed at delivering knowledge or at developing skills? And is the training more ... materials management, but also data linking in companies and organizations of any size Projects to expand business activities via the Internet, socalled e-Business, play an increasingly important

Ngày tải lên: 28/06/2014, 22:20

... Engineers IETF Internet Engineering Task Force IFR Increasing Failure Rate IM Inter-Modulation IMT International Mobile Telecommunications IntServ Integrated Service IP Internet Protocol IPA In? ??nitesimal ... System IPoS Internet Protocol over Satellite ISDN Integrated Services Digital Network ISI Integral Satcom Initiative ISLs Inter-Satellite Links ISN Interactive Satellite Network ISO/OSI International ... Quality Index RCS Return Channel via Satellite RCST Return Channel Satellite Terminal RED Random Early Detection RF Radio Frequency RHC Receding Horizon Control ler RLC Radio Link Control RNC Radio

Ngày tải lên: 05/07/2014, 19:20

... regenerating transponder Single digital TV programme broadcasting, digital radio broadcasting, interactive multimedia services and Internet connectivity Uplink: DVB-RCS (TDMA) Downlink: DVB-S Uplink: ... streaming, while maintaining flexibility in capacity allocation. 1.4 Radio interfaces considered and scenarios Different standardized air interfaces are available for satellite communication systems. ... advantage, since it permits a transponder’s TWTA to operate at or near saturation, thus maximizing downlink C/N. However, interference is not totally eliminated, since it is present in the form of inter-symbol

Ngày tải lên: 05/07/2014, 19:20

... time-frequency resources (according to an MF-TDMA air interface) to the requesting terminals. The Return Channel Satellite Terminal (RCST) transmission capacity is constrained. According to the standardization, ... encoding (outer Reed-Solomon coding, convolutional interleaver, inner convolutional encoding, puncturing), base-band shaping of impulses, and QPSK modulation. The resulting DVB-S transmissions via ... air interface. The RCST is responsible for analyzing, estimating and requesting the needed capacity for uplink transmissions (DAMA case), and for distributing the allocated capacity to the internal

Ngày tải lên: 05/07/2014, 19:20

... and layer independence may lead to non-optimal performance in IP-based next-generation satellite communication systems. Finally, since both radio and power resources are strongly constrained on ... signaling information; an interesting method has emerged from the following papers [40]-[43], where a ‘global coordinator’ of the different layers is considered allowing to acquire status information ... the cross-layer methods involving SD and SI layers will require the adoption of suitable primitives crossing the SI-SAP interface. In order to explain BSM cross-layer interactions and their relations

Ngày tải lên: 05/07/2014, 19:20

... to the management of satellite resources in S-UMTS and DVB-S/-S2/-RCS systems. Such information will be essential in the study of the resource management schemes that will be carried out in the ... optimization of resource management have been investigated; resource management schemes are strongly related to the traffic. For example, supporting high bit-rate switched traffic over the radio interface ... traffic over the radio interface and maintaining the QoS requested by single applications put new requirements on resource management. In addition to the variation in the demands due to the multimedia

Ngày tải lên: 05/07/2014, 19:20

... the resource requests, modeling the fundamental resource allocation algorithm and modeling the processing of individual resource requests. In [58], the authors focus on modeling and evaluating ... appropriate terminal and network Inter-Working Units (IWUs), aiming at integrating the GPRS and the UMTS segments; • Implementation, integration and testing of a demonstrator including three segments: ... constellations. Blocking a new call is surely better than dropping an in- progress call; regardless of the CAC procedure used, the criterion is maintaining active calls in progress and blocking new calls

Ngày tải lên: 05/07/2014, 19:20

... satellites in the Internet world. Satellite solutions are being used for both broadcast/multicast applications and point-to-point services. End-user access combines multicast and point-to-point services ... in [66]; among them, RRM research topics are addressed in various points of the ISI research vision. In particular: (i) cross-layer design of RRM techniques, with cross-layer information coming ... best results are obtained with the cooperation of the protocols operating at different architectural layers, i.e., through a cross-layer approach, while maintaining the principle of layer separation.

Ngày tải lên: 05/07/2014, 19:20

... domain of operation. It also monitors the edges for incoming and outgoing resource reservations/utilization. The information thereby acquired is used in conjunction with the policy system information ... delay constraint. In principle, an essentially error-free delivered information is the only requirement for applications in this category. However, there is still a delay constraint, since data ... [10]: both IntServ and DiffServ endow the routers with QoS mechanisms, such as queuing, scheduling and shaping, as illustrated in Figure 3.2. These mechanisms are implemented in the router interfaces.

Ngày tải lên: 05/07/2014, 19:20

... managing inter-domain communications with neighbor QoS brokers, so that QoS-enabled transport services are implemented in a coordinated way across various domains. Since IntServ requires resource ... depending on both the available resources and the kind of application involved. In general, interface selection can be network-initiated or terminal-initiated. In the first case, the network operator ... QoS capabilities depending on the available resources. In the case of multicast and broadcast services, terminal-initiated interface selection seems the natural approach, since it would be too

Ngày tải lên: 05/07/2014, 19:20

... obtained by using the optimal Maximum Transfer Unit (MTU) for a particular BER. In [8], it is shown that an 18-25% throughput gain may be obtained by increasing the frame length, depending on radio ... heterogeneity adapting themselves, for instance in “layered” video, sending only detailed layers when the available bandwidth is high, for instance in downlink satellite links. As aforementioned, ... obtained in an NGN prototype and check the differences. Two kinds of tests were performed: the first was intended to characterize application behavior in terms of bandwidth needs (including burstiness);

Ngày tải lên: 05/07/2014, 19:20

... used in the physical layer, such as coding and modulation schemes, multiple-access techniques, diversity combining, etc., are discussed in the scenario of satellite systems. What is interesting in ... transmission rate being used at the link layer. Moreover, the network layer can gain by looking both up and down the stack in order to obtain route diversity and multilink routing, where the routing algorithm ... is maintained for the IP-level queues [i.e., those corresponding to Expedited Forwarding (EF), Assured Forwarding (AF) and Best Effort (BE) services within a given Earth station]. The remaining

Ngày tải lên: 05/07/2014, 19:20

... RRC (radio resource controller) is located. A RRA collects information on radio resources and supervises the MAC and PHY functions including power control. A RRC collects radio resource information ... between neighboring BSs within the network. We use RRM to refer to both radio resource management and radio resource managers. If dynamic FFR is deployed in the system, designated neighboring BSs of ... neighboring cell at a particular cell-edge user, the two BSs (serving BS as well as the dominant interfering BS) are coordinated such that the dominant neighboring BS will not use a certain quantity...

Ngày tải lên: 21/06/2014, 11:20