US 12,457,637 B2
Random access method and apparatus
Jian Zhang, Beijing (CN); Qinyan Jiang, Beijing (CN); Zhe Chen, Beijing (CN); and Lei Zhang, Beijing (CN)
Assigned to FUJITSU LIMITED, Kawasaki (JP)
Filed by FUJITSU LIMITED, Kawasaki (JP)
Filed on Jul. 7, 2023, as Appl. No. 18/219,147.
Application 18/219,147 is a continuation of application No. PCT/CN2021/071805, filed on Jan. 14, 2021.
Prior Publication US 2023/0354411 A1, Nov. 2, 2023
Int. Cl. H04W 74/00 (2009.01); H04W 72/0446 (2023.01); H04W 72/0453 (2023.01); H04W 74/0833 (2024.01); H04W 74/0836 (2024.01)
CPC H04W 74/006 (2013.01) [H04W 72/0446 (2013.01); H04W 72/0453 (2013.01); H04W 74/0833 (2013.01); H04W 74/0836 (2024.01)] 20 Claims
OG exemplary drawing
 
1. A random access apparatus, applicable to a terminal equipment, the apparatus comprising:
a transmitter configured to transmit a first message containing a random access preamble to a network device; and
a processor configured to detect downlink control information transmitted by the network device, cyclic redundancy check (CRC) of the downlink control information being scrambled by using an identification parameter that is calculated by using a parameter at least comprising a first index, the downlink control information being used to schedule a second message containing a random access response, wherein
when a subcarrier spacing used for transmission of the random access preamble is greater than 120 kHz, first slots available for transmitting the random access preamble are evenly distributed in a system frame, two neighboring first slots being spaced apart by a second number of slots;
and when a PRACH occasion is located at a first slot, the identification parameter is calculated by using the first index to which the first slot corresponds.