QUALCOMM Incorporated
Techniques for using multiple sets of uplink resources in a random access procedure

Abstract:

A user equipment (UE) may transmit a random access request message to a base station in a random access procedure to access a wireless network. In response, the base station may transmit a random access response message to the UE including an uplink grant for a first set of uplink resources for the UE to transmit a radio resource control (RRC) message. The UE may determine a second set of uplink resources for transmitting the RRC message, for example, based on additional uplink grants received in the random access response message. Additionally or alternatively, the UE may derive additional grants implicitly from the first uplink grant received from the base station. The UE may transmit the RRC message to the base station using the first and/or second sets of uplink resources and establish a connection based on the RRC message for subsequent uplink and downlink communications.