Patent ID: 9456457
Filing Date: 2016-09-27
CPC Classification: H04W

Claim Text:
1. A method in a user equipment (UE) for enhancing Random Access Channel (RACH) performance, comprising: receiving first timing settings explicitly or implicitly signaled from a NodeB or from a Radio Network Controller (RNC) to be used by a first set of UEs for a first Acquisition Indication Channel (AICH) response timing; receiving second timing settings explicitly or implicitly signaled from the NodeB or from the RNC to be used by a second set of UEs for a second AICH response timing, wherein the UE is included in the second set of UEs; transmitting a Physical RACH preamble to the NodeB; waiting for a response to the Physical RACH preamble in an AICH access slot according to a shortest one of the first AICH response timing and the second AICH response timing; and if no response is received, checking for a response regarding the same Physical RACH preamble transmission in a later AICH access slot according to a second shortest of the first AICH response timing and the second AICH response timing.