index_U

U

UDP/IP path protocol, 105
UL-UNITDATA message, 295
Unconfirmed information (UI) frames , 357
Uniform resource locators (URLs), 48
Unrestricted digital information (UDI), 9
Update
cell , 328
combined RA and LA, 330-32
GPRS parameter, status, 334-35
inter-SGSN RA, 329-30
intra-SGSN RA, 329
normal RA, 329-30
RA, 328-29
radio access capability, 297
UPDATE PDP CONTEXT REQUEST message, 347, 348, 349
Uplink
adaptation, 267
multiplexing, 260-62
state flag (USF), 80, 81
Uplink power control, 115-18
closed-loop, 116, 117
open -loop, 116-17
parameters summary, 118
performance methods , 115-16
See also Power control
Uplink TBF, 78, 208
ACK/NACK request period, 264
contention resolution procedure, 226-29
modification, 225-26
release, 246-47
RLC data block transfer during, 241-43
Uplink TBF establishment, 209-29
access persistence control, 212-13
access request, 209-12
on CCCH, 213-19
on PCCCH, 219-24
RACH/PRACH phase, 209-13
trigger, 209
when downlink TBF is established, 224-25
See also Radio resource allocation
User datagram protocol (UDP), 66, 105
User plane, 355-87
GTP layer for, 380
interworking with external networks, 383-87
IP packet sending within GPRS PLMN, 381-83
packet transmission between MS and SGSN, 355-80
 


GPRS for Mobile Internet
GPRS for Mobile Internet
ISBN: 158053600X
EAN: 2147483647
Year: 2003
Pages: 92

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