... focus on the radio interface adopted in the TD-CDMA system. This in-
terface is named UMTS terrestrial radio access—time division duplex (UTRA-TDD). To
support data connections with different bit ... to in-
dicate readiness to receive the data. This mechanism can be used to capture the channel con-
trol before the transmission of long packets, thus avoiding “long collisions.” In addition, ......
... 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 ... NETWORKS
1.3.5 Prediction Techniques
Prediction techniques base the handoff decision on the expected future value of the re-
ceived signal strength. A technique has been proposed and simulat...
... 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/her mobility ... mobile station at and around its predicated location in descending probability un-
til the mobile station is found. Their simulation results show that the predictive distance-
based scheme per...
... accordingly the value of its prefix sum. In
one additional time slot, station S
k
reveals its identity.
The reader should have no difficulty confirming that when the protocol terminates,
conditions ... set N
ǟ
N + 1
endif
all stations set L
ǟ
L – 1
endif
endwhile
204
RANDOMIZED INITIALIZATION PROTOCOLS FOR RADIO NETWORKS
Figure 9.1 Illustrating a partition tree.
13. J. L. Bordim, J.Cui, T....
... broadcast medium at the LLC layer. A so-called distribution system handles the pack-
et forwarding toward destination devices outside the cell across the wired network infra-
structure. The distribution ... Ad Hoc Networking, Reading, MA: Addison-Wesley, 2000.
55. J. Rabaey, P. Wright, and B. Brodersen, The Pico radio project: http://www.eecs.berkeley.edu/
Research/Pico_Radio.
56. Report to...
... Prakash [27] discussed information dissemination in
partitionable mobile ad hoc networks. They studied the problem of getting the location of
some other node in the network and the surroundings of ... 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...
... 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 model the distribution ... overlapping area and the distribution of
22.4 ROUTING AND HANDOVER 485
1. Geographical distribution: On which satellite the user requests are expected to ar-
rive.
2. Time distribu...
... 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 ... and port numbers are discovered using different mechanisms. Up-
dates need to be performed at two different places. The introduction of new types of ser-
vices requires standardization of new...
... 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 ... one
node of each distinct base color, except for two pairs of heavy nodes, each corresponding
to a base color different from v’s and from each other; (b) at most one node of each dis-
tinct base...