SIB 10
contains information relevant to the DRAC procedure.
For FDD mode only.
Sent via FACH and the SCCPCH.
FACH and PCH are mapped into S-CCPCH (Secondary Common Control Physical Channel).
Spreading factor range: from 4 to 256
Thus, minimum data rate is 15kbps (SF=256, N_data = 10 bits)
maximum data rate is 1908kbps (SF=4 with N_data = 1272 bits in a single slot)
Transport channels care about how and which characteristics the data from MAC layer are transmitted through the radio interface.
It is not about what information which logical channels take care.
Thus, two main categoires: (1) dedicated and (2) common
1. Dedicated
DCH (Dedicated Channel): DCH includes either user or control information.
In the case of single service, a usual situation [...]
Measurement procedures allow the UE to provide the network with different measurement reports that will be used by the radio resource management strategies.
The network configures
1. what objects to measure (e.g., the cells, transport channels, physical channels)
2. criteria to be used (e.g., periodic reporting or event-trigger)
3. RLC mode to be used (e.g., AM or UM)
This configuration [...]
I heard that there is no much difference between idle and Cell_PCH from UE perspective.
In idle, UE is located within registration area.
In Cell_PCH, UE’s location is known in cell level.
Then, what about URA_PCH?
In URA_PCH, UE’s location is known in registration area level.
Then, is it true that there is no difference between idle and URA_PCH ?
It [...]
Paging Type 2 message is sent through DCCH
CELL_PCH, URA_PCH, idle: Paging Type 1 message is used.
UE can read System Information from BCCH mapped on BCH in IDLE, CELL_FACH, CELL_PCH and URA_PCH state.
When the System Information gets changed MIB value tag is updated and Paging message is transmitted indicating that System Information has changed. Then, the UE’s in IDLE, CELL_PCH and URA_PCH will be able to read the updated System Information.
In [...]
RNTI (radio network temporary identifier) is used to address the UE (user equipment) on common transport channels.
If dedicated channels are used, then no need for RNTI.
Two types:
1. C-RNTI (cell)
2. U-RNTI(URA)
C-RNTI identifies a UE within a cell, so it can only be used when the UE’s location is known.
Otherwise, U-RNTI is used.
C-RNTI will be allocated to [...]
