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TELETOPIX.ORGTelecom Techniques Guide
LTE 4G Paging System UMTS GSM GPRS
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Paging in Detail for LTE UETo receive E-UTRAN pagination, UEs in
idle mode for monitoring PDCCH for the channel value used to
indicate the pagination RNTI: RNTI-P. The EU needs only to monitor
the PDCCH channel at certain specific times (i.e. the subframes are
specified for individual radio frames introduction to the framework
structure of the LTE radio.). At other times the EU you can apply
DRX, which means that you can stop the receiver in order to save
battery power.
E-UTRAN configures that Angel and Subframes are used for paging.
Each cell produces a series of default paging. In addition, the
upper layers can use dedicated signaling to set up a series of
EU-specific pages. If both are configured, the EU applies the
lowest value. The EU calculated Angel (paging (PF)) and secondarily
in PF (mode paging (PO)), that E-UTRAN refers to EU in the
following ways:
SFN mod T = (T/N) (UE_ID mod N)
i_s = _UE_ID/N_ mod Ns
T = UE DRX cycle (i.e. paging cycle) = min(Tc, Tue)
N = min(T, nB)
Ns = max(1, nB/T)
where:
TC is the default paging-specific cell cycle {32, 64, 128, 256}
radio frames,
Tuesday is the EU specific cycle pagination {32, 64, 128, 256}
radio frames,
N is the number of frames in the paging paging EU cycle,
UE_ID IMSI20 mode is 1024, the IMSI is decimal rather than
binary number,
i_s is an index that points to a pre-defined table definition
corresponding subframe
nB is the number of paging Subframes paging per cycle (over all
UEs in the cell),
NS is the number of paging Subframes in a framework, which is
used for paging.
The table includes a number of examples to illustrate the
calculation of radio paging (PF) frames and subframes (PO).
In cases (A) and (B) in the table, one for every four-frame is
used for radio paging by using the secondary of each of these
frames. In the case of (B), there are 32 paging framework in the EU
cycle paging, over which the UEs are distributed on the basis of
the EU. In the case of (C), two subframes per frame are used
for
27AUG2013To receive
E-UTRAN
pagination, UEs in
idle mode for
monitoring PDCCH
for the channel
value used to
indicate the
pagination RNTI:
RNTI-P. The EU
needs only to
monitor the PDCCH
channel at certain
specific times.
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Page 1 of 2Paging in Detail for LTE UE
9/28/2013http://www.teletopix.org/4g-lte/paging-in-detail-for-lte-ue/
paging, or Ns = 2. In this case, 128 pages frames within the EU
and UEs also paging are distributed on two subframes paging
interval. LTE specifications include a table showing for each
combination of Ns and i_s, which is the interface index for
resulting out of the equation. The figure shows the cases (B) and
(C) all shaded subframes may be used for radio paging system; the
darkest are applied for the EU.
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Page 2 of 2Paging in Detail for LTE UE
9/28/2013http://www.teletopix.org/4g-lte/paging-in-detail-for-lte-ue/
