Below types of information carries By Logical Channel in LTE
- Control Channels
- Broadcast Control Channel (BCCH) :used for transmission of system information from the network to all UEs in a cell.
- Paging Control Channel (PCCH) :used for paging of UEs whose location on cell level is not known to the network.
- Common Control Channel (CCCH) :used for transmission of control information in conjunction with random access, i.e., used for UEs having no RRC connection.
- Dedicated Control Channel (DCCH) :used for transmission of control information to/from a UE, i.e., used for UEs having RRC connection (e.g. handover messages).
- Multicast Control Channel (MCCH) :used for transmission of control information required for reception of MTCH.
- Traffic Channels
- Dedicated Traffic Channel (DTCH) :used for transmission of user data to/from a UE.
- Multicast Traffic Channel (MTCH) :used for transmission of MBMS services.
Types of Information Carried by Logical Channels in LTE
In LTE, logical channels are used to transport various types of information between the User Equipment (UE) and the Evolved NodeB (eNB). These channels provide a way to carry both control and user data while maintaining the necessary quality of service (QoS).
1. Control Information
- Scheduling Information: Instructions on how the UE should access the shared channels and the resources allocated to it for transmission.
- Measurement Reports: Data related to signal strength, interference, and other parameters needed for network optimization.
- RRC Signaling: Information used for controlling and maintaining the RRC connection between the UE and the eNB.
2. User Data
- IP Data: User data such as internet traffic (web browsing, email, etc.), multimedia content, and voice over IP (VoIP).
- Application Data: Data from applications running on the UE, like video streaming, file transfers, etc.
3. Broadcast Information
- System Information: Essential broadcasted data for the UE to sync with the network, including cell identity and configuration details.
Conclusion
Logical channels in LTE carry a combination of control information, user data, and broadcast information, all of which are necessary for the efficient operation of the network and delivery of services to the user.