BCH (Broadcast Channels) BCCH(Broadcast Control Channels) Downlink Only. Broadcast information of the serving cell (System Information). Transmitted on timeslot zero of BCCH carrier. Read only by idle mobile at least
MOBILE STATIONS ISDN NUMBER (MSISDN) Is the mobile number used in a GSM PLMN (Public Land Mobile Network) MSISDN = Country Code + National Destination Code + Subscriber number e.x.
In RF Hopping mode, each route of service information is processed by fixed base band unit and and carrier frequency processing unit, while the working frequency carrier of carrier frequency
There are a number of relatively independent base band processing units and carrier processing units in the system. The working frequency carrier of each carrier processing unit is fixed, the
When you decide to apply hopping to any BTS then below parameter require to previously defining. All the parameters which are related to hopping are configured in cell/configure Hopping data
In GSM system, the interference strength and distribution on each frequency carrier in cell are different, the carrier variation of the bursts of the same communication low the interference on
Hopping can lower the influence of Rayleigh fading to signal strength. This influence equals to frequency diversity. One voice code block of GSM is transmitted in 8 bursts separately after
Hopping can lower many kinds of interferences, such as co-channel interference, adjacent channel interference, inter modulation interference, etc. Hopping turns the consecutive long time interference of mobile station into discontinuous
When using close frequency reuse technique, system interference is the most important factor for frequency reuse ratio. Usually, power control and discontinuous transmission technologies are adopted to lower system interference.
Multi-layer reuse pattern is a gradual process for TCH frequency planning. In other words, the reuse is rather loose in TCH1 layer and it is quite close in the last
In TCH interval grouping, the three cells of the same BTS use the same HSN while different BTS use different HSN, and different MAIO are used by carriers in the
MOBILE IDLE When the mobile is idle, it listens to the best cell to camp. Mobile decides to choose the cell by itself without the help of BSC. This is