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RAN1 - Radio layer 1

RAN WG1 (Radio layer 1) is responsible for the specification of the physical layer of the radio Interface for UE, UTRAN, Evolved UTRAN, and beyond; covering both FDD and TDD modes of the radio interface. 

Terms of reference 

The latest terms of reference were approved at RAN#53
in document


Within the scope of TSG RAN, RAN WG1 is responsible for the development of specifications dealing with UTRA, Evolved UTRA, and beyond.
RAN WG1 is responsible for:


Specification of the physical layer of the Uu radio Interface for UE, UTRAN, Evolved UTRAN, and beyond, covering both FDD and TDD modes, as well as the physical layer of the Un Interface for Relay Nodes. The work in RAN WG1 includes especially:


  • Specification of physical channel structures
  • Specification of the mapping of the transport channels onto physical channels
  • Specification of the physical layer multiplexing, and channel coding and error detection
  • Specification of the spreading and modulation
  • Specification of the physical layer procedures
  • Specification of definition of measurements and their provision by the physical layer to the upper layers RAN WG1 also carries out work related to handling of the physical layer related UE capabilities and to physical layer related parameters used in UE tests developed in TSG RAN.

Useful links and information

About RAN WG1 List of elected officials
Documents Documents area
  Work items
Meetings Next meeting information & previous meeting reports and documents
  Liaisons Statements
  Full RAN WG1 meeting calendar
General info Email exploder lists


RAN Working groups and Ad Hoc groups 
TSG RAN Plenary  
TSG RAN WG1 Radio Layer 1 specification
TSG RAN WG2 Radio Layer 2 and Radio Layer 3 RR specification
TSG RAN WG3 Iub Iur and Iu specification - UTRAN O&M requirements
TSG RAN WG4 Radio performance and protocol aspects (system) - RF parameters and BS conformance
TSG RAN WG5 Mobile terminal conformance testing
TSG RAN WG6 Legacy RAN radio and protocol
TSG RAN AHG1 Ad-hoc group on ITU (internal) co-ordination
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