18466239. COLLISION REDUCTION FOR RANDOM ACCESS PROCEDURES (QUALCOMM Incorporated)

COLLISION REDUCTION FOR RANDOM ACCESS PROCEDURES

Organization Name

QUALCOMM Incorporated

Inventor(s)

Jing Sun of San Diego CA (US)

Xiaoxia Zhang of San Diego CA (US)

Jing Jiang of San Diego CA (US)

Raviteja Patchava of San Diego CA (US)

COLLISION REDUCTION FOR RANDOM ACCESS PROCEDURES

This abstract first appeared for US patent application 18466239 titled 'COLLISION REDUCTION FOR RANDOM ACCESS PROCEDURES

Original Abstract Submitted

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit a random access preamble according to a cyclic shift from a first set of cyclic shifts associated with a cyclic shift step size that is less than a round trip time (RTT) of a serving cell of the UE. The UE may generate the first set of cyclic shifts based on a second set of cyclic shifts and a set of cyclic shift offsets associated with an offset step size that is less than the RTT. If a network entity detects a collision between the random access preamble and another random access preamble, the network entity may transmit a collision resolution message indicating resources for the UE to retransmit the random access preamble. Alternatively, the network entity may proceed with the random access procedure by transmitting a random access response message to the UE.