... algorithm providing better performance to the multiinterface terminals in the integrated networks can be found in [18] 3.2.4 SIP and MIP Bing Update After sending UNA to the NAR for announcing its existence, ... For achieving the fast handover procedure, cross-layer schemes have been investigated widely Among them, some use MIH to facilitate handover while others not In [12],...
Ngày tải lên: 21/06/2014, 11:20
... algorithm in meeting the delay and rate requirements of calls The CRD metric prioritizes the flows for dynamic bandwidth allocation and ensures fairness in terms of both delay and rate Delay and rate guarantees ... are again determined by considering the time domain codes as the root codes and they would be C(1, 0) and C(0, 0) for calls A and B, respectively The...
Ngày tải lên: 21/06/2014, 11:20
báo cáo hóa học:" Multiple access communications in future-generation wireless networks" potx
... “Polarization Division Multiple Access With Polarization Modulation for LOS Wireless Communications by Bin Cao, Qin-Yu Zhang, and Lin Jin discusses a potential multiple access and modulation ... Multiple access communications in future-generation wireless networks Norman Abramson1, Claudio Sacchi2, Boris Bellalta*3 and Alexey Vinel4 Department of Electrical Engineering,...
Ngày tải lên: 21/06/2014, 17:20
Báo cáo hóa học: " Research Article Modeling of Call Dropping in Well-Established Cellular Networks" ppt
... normally terminated calls (i.e., not-dropped-calls in operator database) and of dropped calls, distinguishing two phases: ringing and conversation (see Figure 2) The duration of the ringing phase ... new modeling of the call dropping process Using statistical tools on measured data from a real network, we have characterized dropped calls and call durations (distinguishing betw...
Ngày tải lên: 22/06/2014, 06:20
Báo cáo hóa học: " Beamforming techniques for enabling spatialreuse in MCCA 802.11s networks" pdf
... receiver [11-13] For example, zero-forcing (ZF) beamforming for interference cancellation has been shown to increase the capacity of ad-hoc networks [14] Beamforming is indeed a promising approach ... allocated in the future Because each STA advertises its reserved TXOPs, both the CSI and the timing information for enabling beamforming may be obtained A Beaconing and synchroni...
Ngày tải lên: 20/06/2014, 22:20
Báo cáo hóa học: " An analytical model for the intercell interference power in the downlink of wireless cellular networks" ppt
... estimate of the pdf of the interference power, for different values of the shadowing standard deviation, sdB Based on these estimates, we then propose an analytical statistical model of the interference ... a semi -analytical method for the estimation of the pdf of the intercell interference power in a multicellular network when the combined...
Ngày tải lên: 21/06/2014, 00:20
Báo cáo hóa học: " Research Article Titan: An Enabling Framework for Activity-Aware “Pervasive Apps ” in Opportunistic Personal Area Networks" pptx
... Titan allows for the inclusion of such techniques into an activity-aware system Combining these techniques with Titan further supports our objective of deploying activity-aware Pervasive Apps in ... standards for accessing, describing, and composing services in a globally connected network of thousands of sensors, actuators, and processing units Titan provides dynamic mechanis...
Ngày tải lên: 21/06/2014, 07:20
Báo cáo hóa học: " Research Article A Fluid Model for Performance Analysis in Cellular Networks" doc
... its arguments (mean and standard deviation) This point is rarely raised in literature: analysis and Monte Carlo simulations can lead to quite different outage probabilities even if analytical average ... Given that there are already n, these curves give the probability that a new user, initiating a new call at a given distance, implies an outage As an example, a new user in a c...
Ngày tải lên: 21/06/2014, 11:20
Báo cáo hóa học: " Research Article Efficient Key Agreements in Dynamic Multicast Height Balanced Tree for Secure Multicast Communications in Ad Hoc Networks" doc
... generate a group key (GKi ) for each cluster member to ensure secure multicast communications Dynamic Multicast Height Balanced Tree In ad hoc networks, mobile nodes join or leave networks dynamically, ... interregion keys to perform secure multicast communications Secure Multicast Communications This section describes the secure operations for multi...
Ngày tải lên: 21/06/2014, 11:20
Báo cáo hóa học: " Editorial Cooperative Communications in Wireless Networks" ppt
... 2 EURASIP Journal on Wireless Communications and Networking this protocol, both under an individual and a sum-power constraint assuming perfect channel state information ¨ In the third article, ... delve into the ou appropriate coding schemes for a two-user cooperative communications channel They propose the use of coordinate interleaved trellis codes over QPSK and 8PSK modulations...
Ngày tải lên: 21/06/2014, 22:20
Báo cáo hóa học: "Research Article Dynamic Resource Assignment and Cooperative Relaying in Cellular Networks: Concept and Performance Assessment" pot
... introduced dynamic and flexible resource assignment in a relay enhanced cell and cooperative relaying Our performance results indicate that a relay based deployment using the proposed resource assignment ... potential benefits of cooperative relaying we compare the cooperative multiuser MIMO relaying scheme with single-path relaying and a system using only dire...
Ngày tải lên: 21/06/2014, 23:20
Báo cáo hóa học: " Research Article Biometric Methods for Secure Communications in Body Sensor Networks: Resource-Efficient Key Management and Signal-Level Data " potx
... for committing, or securely binding, a cryptographic key for secure transmission over an insecure channel More detailed descriptions of this scheme will be given in Section 2.5 Essentially, for ... F M Bui and D Hatzinakos OUR CONTRIBUTIONS The existing research in BSN using ECG biometric can be classified into two major categories: network topology (via clustering formati...
Ngày tải lên: 22/06/2014, 00:20
Báo cáo hóa học: " Cross-Layer Design and Analysis of Downlink Communications in Cellular CDMA Systems" docx
... set and sends back HCM Terminate (b) Proposed soft handoff procedure Figure 6: Soft handoff algorithm and procedure 4.2 Soft handoff One of the major benefits of a CDMA system is the ability of a ... Spain, September 2004 [7] J Yao, T C Wong, and Y H Chew, Cross-layer design on the reverse and forward links capacities balancing in cellular CDMA systems,” in Proceedings...
Ngày tải lên: 22/06/2014, 22:20
Báo cáo hóa học: " Cross-Layer Quality-of-Service Analysis and Call Admission Control in the Uplink of CDMA Cellular Networks" potx
... capacity and leads to the determination of admission region in the uplink of CDMA systems Our analytical work can be further combined with the call level analysis of QoS performances to provide a joint ... cross-layer CAC in CDMA networks Our contribution is that the analytical formulation in this paper leads to the determination of the crosslayer ad...
Ngày tải lên: 22/06/2014, 22:20