Patent ID: 9590878
Date: 2017-03-07
CPC Classifications: H04L,H04W

Claim:
1. A method of wireless communication of a user equipment (UE), comprising: estimating channel state information (CSI) in each of a plurality of subframes; determining the CSI corresponding to a lowest CSI over the plurality of subframes; selecting a random access channel (RACH) format for a RACH procedure based on the determined CSI; determining whether to send a second CSI based on at least one of a timer or a threshold; receiving an uplink grant from a base station, the uplink grant being received when the second CSI is not sent for a time period greater than a second threshold, wherein the second CSI is sent based on the received uplink grant; and sending, in response to determining to send the second CSI, the second CSI in a media access control (MAC) header within a physical uplink shared channel (PUSCH) transmission, wherein the second CSI is sent through the RACH procedure and is indicated through the selected RACH format.