US 12,225,589 B2
Transmission device, reception device, transmission method, and reception method using random access preamble
Takashi Iwai, Ishikawa (JP); Tomofumi Takata, Ishikawa (JP); Hidetoshi Suzuki, Kanagawa (JP); and Tetsuya Yamamoto, Kanagawa (JP)
Assigned to Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
Appl. No. 17/261,835
Filed by Panasonic Intellectual Property Corporation of America, Torrance, CA (US)
PCT Filed Oct. 2, 2019, PCT No. PCT/JP2019/038884
§ 371(c)(1), (2) Date Jan. 20, 2021,
PCT Pub. No. WO2020/090334, PCT Pub. Date May 7, 2020.
Claims priority of application No. 2018-206734 (JP), filed on Nov. 1, 2018.
Prior Publication US 2021/0307075 A1, Sep. 30, 2021
Int. Cl. H04W 74/0833 (2024.01)
CPC H04W 74/0833 (2013.01) 8 Claims
OG exemplary drawing
 
1. A communication apparatus, comprising:
circuitry, which, in operation:
in response to a path loss between the communication apparatus and a base station being less than a threshold, selects a random access preamble randomly from a first plurality of random access preambles; and,
in response to the path loss not being less than the threshold, selects a random access preamble randomly from a second plurality of random access preambles, wherein, data transmission resource information is configured, which includes a subcarrier number and a number of consecutive interlaces for the first plurality of random access preambles and the second plurality of random access preambles, the subcarrier number specifying one index out of five indices indicating five interlace positions evenly dispersed in physical resource block (PRB) clusters in a frequency domain, and the number of consecutive interlaces indicating a number of consecutive PRBs in each of the PRB clusters; and
a transmitter, which, in operation, transmits the selected random access preamble and a data signal based on the data transmission resource information corresponding to the selected random access preamble.