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LTE Radio Channels
November 17, 2017 | By Mohamed Abdel Monem @ Vodafone
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Radio Optimization Senior Engineer at Vodafone Egypt

 

 

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In order that data can be transported across the LTE radio interface, various "channels" are used. These are used to segregate the different types of data and allow them to be transported across the radio access network in an orderly fashion.

 

Effectively the different channels provide interfaces to the higher layers within the LTE protocol structure and enable an orderly and defined segregation of the data.

 

LTE channel types

 

There are three categories into which the various data channels may be grouped.

  • Physical channels:  These are transmission channels that carry user data and control messages.
     
  • Transport channels:  The physical layer transport channels offer information transfer to Medium Access Control (MAC) and higher layers.
     
  • Logical channels:  Provide services for the Medium Access Control (MAC) layer within the LTE protocol structure.
     

Logical Channel Types


Transport Channel Types


Physical Channel Types


Multiplexing of Channels

 

 
     
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