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Broadcast Control Channel (BCCH)
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DOWNLINK
- This channel contains system parameters needed to identify the network and gain access. These paramters include the Location Area Code (LAC), the Mobile Network Code (MNC), the frequencies of neighboring cells, and access parameters.
Frequency Correction Channel (FCCH)
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DOWNLINK
- This channel is used by the MS as a frequency reference. This channel contains frequency correction bursts.
Synchronization Channel (SCH)
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DOWNLINK
- This channel is used by the MS to learn the Base Station Information Code (BSIC) as well as the TDMA frame number (FN). This lets the MS know what TDMA frame they are on within the hyperframe.
* The BSIC was covered in the Introduction to GSM Tutorial. You can also read about the numbering schemes used in GSM.
Cell Broadcast Channel (CBCH)
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DOWNLINK
- This channel is not truly its own type of logical channel. The CBCH is for
point-to-omnipoint
messages. It is used to broadcast specific information to network subscribers; such as weather, traffic, sports, stocks, etc. Messages can be of any nature depending on what service is provided. Messages are normally public service type messages or announcements. The CBCH isnt allocated a slot for itself, it is assigned to an SDCCH. It only occurs on the downlink. The CBCH usually occupies the second subslot of the SDCCH. The mobile will not acknowledge any of the messages.
What else can I help you with?
What are logical channels between MS and BTS?
Logical channels between a Mobile Station (MS) and a Base Transceiver Station (BTS) are channels that facilitate the transmission of data and control information. They include dedicated channels, such as the Traffic Channel (TCH) for user data and the Signaling Channel (SCH) for control messages. Additionally, common channels like the Broadcast Control Channel (BCCH) and Random Access Channel (RACH) enable essential communication for network access and information dissemination. These channels are crucial for ensuring efficient and organized communication in mobile networks.
What is use of fiu in bts?
FIU use in Bts for large number of channels
Difference between rri and fiu in nokia bts?
FIU and RRI both are connect to ODU of microwave antenna. The difference is RRI is used in ultra BTS where as FIU is used in Flexi BTS.
What is h difference between 2g bts and 3g bts?
3g BTS is greater than 2g bts. and it is with new technologies.
How much distance between BTS to BTS?
typically 2km
Difference between indoor bts and outdoor bts?
Indoor BTS: It is placed in a shelter Air-condition is must Very sensitive Outdoor BTS: No shelter required Air-condition is not a must Not very sensitive comparing to indoor bts
What is the radio frequency used for linking bts to bscsmsc?
radio frequency for link to bts to bscs/msc
What are lapd and lapdm gsm?
link acess protocol for the D channel is used in the radio link between bts and ms
What are the voltages used for BTS?
24volt dc
What is the function of bbu in huwaei bts?
· - Provides physical ports between the BTS and the BSC for interaction. · - Provides the ports for communication with the radio filter. · -Provides the USB port for downloading the BTS software · -Provides operation management channels. · · -Provides centralized management on the entire BTS system, such as OM and signaling processing · -Provides the reference clock for the entire system. - Provides for management of Microwave, Optical Fiber and other communication signalling process. - Details of Function of BBU is here telecombase.blogspot.com/2015/11/bbu-base-band-unit-in-telecom.html
What is the function of Fipa card in nokia flexi BTS?
Transmission between BTS and BSC.FIFA card contain only TNC male connector.
What is the function of fifa card in nokia flexi BTS?
fifa is a transmission module with support for 16 E1 channels, it receives DC power from BTS through its backplane connectors; power consumption of a fully equipped FIFA is less than 76 w.
