US Patent No. 10,143,012

RANDOM ACCESS PROCEDURE IN WIRELESS DEVICE, RADIO BASE STATION AND METHODS THEREIN


Patent No. 10,143,012
Issue Date November 27, 2018
Title Random Access Procedure In Wireless Device, Radio Base Station And Methods Therein
Inventorship Gunnar Bergquist, Kista (SE)
Gunnar Mildh, Sollentuna (SE)
Mikael Wittberg, Uppsala (SE)
Assignee Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 10,143,012

1. A method in a wireless device for handling access to a radio base station in a wireless communication network, comprisinginitiating a lower-layer random access procedure, in the wireless communication network, while one or more timers associated with a Radio Resource Control (RRC) layer procedure are running;
determining, at the RRC layer and subsequent to a first plurality of random access preamble transmission attempts, that a problem with the random access procedure has occurred based on receiving an indication of the problem from the lower layer; and
responsive to determining that the problem occurred,
aborting from the RRC layer the random access procedure immediately and declaring a radio link failure, at the RRC layer, without taking into account the one or more running timers associated with the RRC-layer procedure.