... radio multiplexing technology, which deals with the way the radio
resources are divided and allocated to several mobile users. However, W-CDMA also speci-
fies some aspects related to the radio ... each one possibly based on different RAN technology.
3.4.7.2 Independence between the transport network and radio access network
As indicated in Figure 3.13(a), the radio access network is typically...
... segmentation.
UMTS Air Interface 21
Table 2.2.2 Coding schemes for transport channels in FDD
Transport channel Coding scheme Coding rate
Convolutional coding Turbo coding No coding CC TC
BCH X ––1/2 –
PCH X ––1/2 ... dependent on the
channel coding scheme.
The following channel coding schemes can be applied to transport channels:
† convolutional coding
† turbo coding
† no coding.
The coding s...
... when not applying site
diversity, successful reception rate is essentially the same for all regions and fair service can
be provided. Accordingly, the application of site diversity reception generates ... and downlink of cellular radio systems are not coincident
because these system structures are different. When traffic is uneven, it influences on commu-
nication quality differently for the tw...
... depicts this multi-dimensional and re-configurable radio [1], while Figure 1.6
shows its open interfaces. As wireless goes multi-dimensional, different standards come out
everyday for different applications. ... Fuelled by many emerging technologies including digital signal processing,
software definable radio, intelligent antennas, superconductor devices as well as digital
transceiver, the fut...
... field indicates the
common logical channel type, or if a dedicated logical channel is used.
† UE Id Mux: for dedicated type logical channels, the UE Id field in the MAC header is used
to distinguish ... (OCCCH): bi-directional channel for transmitting
control information between UEs.
† ODMA Dedicated Control Channel (ODCCH): a point-to-point bi-directional channel
that transmits dedicated contr...
... of
additional radio channels with different structure, different encoding and different modulation
from the typical GSM channels. These radio channels provide for increased capacity on the
radio interface. ... the radio interface and the management of the radio interface. In particular, the protocols
across the MT – AN interface support the transfer of detailed radio-related information to
co...
... multimedia.
4.2.2.5 Next generation of WAP
The next generation of WAP will include:
† XHTML
† TCP
† colour graphics
† animation
† large file downloading
† location-smart services
† streaming media
† ... ‘cards’ on the handset display. A very important advantage
of WAP is that it aims to provide standardised support for wireless data applications. So each
handset developed according to the WAP...
... networks,
automatic service discovery will be a very important feature in future wireless network
scenarios. With service discovery, devices may automatically discover network services
including their properties, ... ingredients, for example a MP3 piece of music can be
charged with micropayments assigning revenue directly to the musicians.
Emerging Wireless Applications and Protocols 259
‘Ope...
... volumes measured over a 200-m distance
Broadband Wireless Mobile: 3G and Beyond282
Figure 5.11 Cumulative distributions of the path losses for different traffic conditions (h
b
¼ 4m,h
m
¼
1.3 m, ... from the direct wave and the wave reflected off the ground and inco-
herent components. As noted by Durgin et al. [25], these additive signals produce a distribu-
tion in which deeper fading occurs...
... cellular radio systems.
However, designing a teletraffic profile is exceedingly difficult because the teletraffic volume
differs in different regions and districts, and it also varies, depending on ... is important. Code division multiple access (CDMA) is used in IMT-2000. For
time division multiple access (TDMA), a lot of research on technology to counter fading
has been studied. It also has ......