WCDMA System message

-
SIB1 : NAS Information. UE Timers and counters to be used in RRC Idle & Connected State,
SIB2: List of URA Identities
SIB3: Parameters for Cell Selection and Reselection
SIB4: Same as SIB3 but used in Connected State
SIB5: Configuration parameters of common physical channels in a cell. PCH and PICH Info (CPCH)
SIB6: Configuration of Common and Shared physical channel
SIB7: Contains fast changing UL interface params and dynamic. As this is changes often so controlled by timer
SIB8: Used in FDD . Static CPCH info of cell. Used in Connected mode only
SIB9: CPCH info. As it changed often, controlled by timers connected mode only.
SIB10 : DRAC Procedure, used when CELL_DCH controlled by timer
SIB11 : Measurement control information to be used in CELL
SIB12: Same as SIB11 but used in connected mode only
SIB13: For ANSI-41 . It also has 4 associated SIBS 13.1 to 13.4. Reference to subblocks. Used when System is ANSI-41.
SIB14: Parameters for common and dedicated physical DPCH UL outer loop power control info for TDD
SIB15: Assistance info for UE positioning. Used to reduce signaling by position. 15.1 to 15.5 sub sibs.
SIB16: Predefined channel conf. used while hand over. Radio Bearer transport channel, physical channel parameter to be stored by UE in idle/connected mode. Several occurrences but UE does not bother.
SIB17: Shared channel info for TDD only
SIB18: PLMN Identities of neighboring cells. Used in Shared Access N/w with the cell reselection process


Comments

Post a Comment

Popular posts from this blog

SCFT - Single Cell Function test

-
Single Cell Function test SCFT is for verifying whether individual BTS works well or not, by making a single cell function test of BTS hardware and software. Essential items to be tested are as follows: 1) BTS Transmitter Output Measurement Test 2) Initial parameter establishment (Pilot PN/System ID/Site ID/Frequency, Neighbor List) 3) Call Origination and Termination Test 4) Softer Handoff Test/Antenna installation check (Direction, Tilt, Transmission Line) 5) Single Cell Coverage Test 6) Noise Floor Test 7) Parameter check.
Read more

Troubleshooting for GSM KPIs (SD Block & SD Drop)

-
KPIs to be monitored: ·             SD Blocking ·             SD Drop SDCCH Channel: ·    SDCCH channel is a dedicated channel which is using for LAC updation, Call Setup, SMS in Ideal mode. It works in UL & DL SD Blocking: ·    SD Blocking means that you are not getting SD resource for the call origination. When MS connects with Network then RACH and AGCH are provided. After AGCH, SDCCH is provided but if SDCCH is not provided at this time due to some problem or due to unavailable of SD by BSC. KPI Formula in Ericsson: ·             SDCCH CONGESTION = (CCONGS / CCALLS) * 100 ·             CCONGS - Congestion counter. ·  ...
Read more

PS core network

-
Image
The PS core network consists of two parts, the traditional General Packet Radio Service (GPRS) core network and the new Evolved Packet System (EPS) core network. The PS core network connects mobile subscribers to Packet Data Networks (PDNs) such as the Internet, corporate networks or operator services networks.  a functional overview of the PS core network. Logical entities and interfaces are shown in black and form a 2G/3G network, while the blue boxes and lines in Figure  show the LTE/EPC related parts. The LTE/EPC network can be regarded as an extension and evolution of existing 2G/3G networks. From a node implementation perspective, there is no strict border between the two networks. The corresponding logical entities of GPRS and EPS networks can be deployed concurrently in Ericsson PS core nodes, such as the SGSN-MME and EPG; these are marked in red. In addition, Ericsson GPRS nodes can be upgraded with EPC functionality by software only. Network evolution i...
Read more