... W. Brodersen, Low-power CMSO digital design, IEEE
Journal of Solid State Circuits, 27(4), pp. 473–484, 1992.
20. Digital Inter Relay Communication (DIRC), http://www.dirc.net/home/index.html.
21. ... and J. D. Tornow, The DARPA packet radio network protocols, Proceedings of the
IEEE, 75, 1, 21–32, 1987.
34. P. Karn, H. Price, and R. Diersing, Packet radio in amateur service, IEEE JSAC, SAC-3,...
... Usually, the
hard handoff can be further divided into two different types—intra- and intercell handoffs.
The soft handoff can also be divided into two different types—multiway soft handoffs and
softer ... strategies during overloading, might influence the overall
performance.
In the next section, we introduce different types of possible handoffs. In Section 1.3,
we describe different handoff...
... traveled
maximal distance exceeds the last reported maximal distance. The paging operation is
based on the last reported cell and the maximal distance R. The system will search all R
rings surrounding the ... the cells within a distance of D from the last
reported cell. The distance-based strategy is dynamic, and the distance threshold D can be
determined on a per-user basis depending on his/...
... transmitting. If the medium is found to be idle for an
interval that exceeds the distributed interframe space (DIFS), the station continues with its
transmission.* On the other hand (when the medium is busy), ... WLANs
155
Physical Layer
Distributed Coordination
Function
Point Coordination
Function
Contention-free Contention
Figure 7.6 IEEE 802.11 architecture.
*To guarantee fair access to t...
... words, the RN with no-CD cannot distinguish between ambient noise and two or
more transmissions colliding on the channel. A number of radio and cellular networks in-
cluding AMPS, GSM, ALOHA-net, ... Fifer and F. J. Bruno, Low cost packet radio, Proceedings of the IEEE, 75, 33–42, 1987.
20. M. Gerla and T C. Tsai, Multicluster, mobile, multimedia radio network, Wireless Networks, 1,
255–265,...
... to provide a
uniform framework with the corresponding notions in GEDIR and MFR methods. Stoj-
menovic [52] discusses the V-GEDIR, CH-MFR, and R-DIR methods, in which m is for-
warded to exactly ... north–south direction, including neighbors of
nodes in that path. A initiates two routing messages, in the directions north and south,
whereas other nodes follow only one of the directions. Each .....
... distribution of users.
1. Geographical distribution: On which satellite the user requests are expected to ar-
rive.
2. Time distribution: How long they are expected to be active.
3. Rate distribution: ... model
with different properties, such as MMPP or multifractal models [2] (for more details, we
refer the reader to the survey in [13]).
22.3.2.2 Time Distribution
The traditional way to...
... Service dis-
covery and distributed computing are discussed in more detail.
27.4.1 Service Discovery
Service discovery protocols are a key technology of pervasive computing. They give to
distributed ... Service discovery protocols and distributed components architec-
tures were addressed in more detail. Service discovery protocols, such as SLP and Jini, pro-
vide mechanisms with which distrib...
... and code division can be used in order to divide the radio spectrum. In fre-
quency division, the spectrum is divided into frequency bands. In time division, the us-
age of the channel is divided ... growth of radio traffic, and other fac-
tors. A given radio spectrum (bandwidth) dedicated for cellular communications can be
divided into a set of disjoint and noninterfering radio channels. ......
...
Unit Disk Graphs
Unit disk graphs are intersection graphs of equal sized disks in the plane. It is easy to see
that given the distance model, multicoloring is equivalent to coloring for unit disk ... disk graph is the intersection graph of disks of equal diameter in
the plane. They can also be described in terms of distance or proximity models, which
consist of a value d Ն 0 and an embedding...