US 12,075,489 B2
Method, apparatus, communication device and storage medium for random access
Tong Sha, Beijing (CN); and Yang Liu, Beijing (CN)
Assigned to BEIJING XIAOMI MOBILE SOFTWARE CO., LTD., Beijing (CN)
Appl. No. 17/595,921
Filed by Beijing Xiaomi Mobile Software Co., Ltd., Beijing (CN)
PCT Filed May 31, 2019, PCT No. PCT/CN2019/089686
§ 371(c)(1), (2) Date Nov. 29, 2021,
PCT Pub. No. WO2020/237681, PCT Pub. Date Dec. 3, 2020.
Prior Publication US 2022/0322453 A1, Oct. 6, 2022
Int. Cl. H04W 74/0833 (2024.01); H04L 1/08 (2006.01); H04W 72/02 (2009.01); H04W 72/0453 (2023.01); H04W 74/08 (2009.01)
CPC H04W 74/0841 (2013.01) [H04L 1/08 (2013.01); H04W 72/02 (2013.01); H04W 72/0453 (2013.01); H04W 74/0866 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for random access, comprising:
respectively configuring, in frequency domain, an initial transmission resource pool and a re-transmission resource pool of a physical random access channel (PRACH), wherein frequency-domain resources in the initial transmission resource pool are used for initial transmission of a random access preamble, frequency-domain resources in the re-transmission resource pool are used for re-transmission of the random access preamble, and initial transmission frequency-domain resources in the initial transmission resource pool and re-transmission frequency-domain resources in the re-transmission resource pool have a one-to-one mapping relationship;
sending random access configuration information, wherein the random access configuration information comprises resource configuration information for the initial transmission resource pool and resource configuration information for the re-transmission resource pool;
receiving the random access preamble; and
determining whether the received random access preamble is an initially transmitted or re-transmitted random access preamble according to a transmission frequency-domain resource of the received random access preamble with reference to the random access configuration information.