Patent · US Active

Terminal apparatus, base station apparatus, communication method, and integrated circuit

US10979951B2 · kind B2 · utility

3Cited by
4References
6Claims
0Family size

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Key dates

Filing dateDec 8, 2017
Grant dateApr 13, 2021
Priority date
Expiry dateDec 15, 2037

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04W36/08
  • WIPO fieldDigital communication
  • WIPO sectorElectrical engineering

Abstract

A terminal apparatus applies, in a case that a handover command is received, and the handover command includes skip information (rach-Skip) for indicating that a random access procedure for a target primary cell is skipped, a value of NTA indicated by target TA information (targetTA) included in the skip information (rach-Skip) to a target primary Timing Advance Group (TAG) after synchronization with a downlink of the target primary cell is initiated, and starts a Time Alignment (TA) timer associated with the target primary TAG.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.