US 12,284,679 B2
Communications method and apparatus
Hua Shao, Shenzhen (CN); Huang Huang, Chengdu (CN); Mao Yan, Chengdu (CN); and Kuandong Gao, Chengdu (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Oct. 16, 2020, as Appl. No. 17/072,969.
Application 17/072,969 is a continuation of application No. PCT/CN2019/078675, filed on Mar. 19, 2019.
Claims priority of application No. 201810350020.X (CN), filed on Apr. 18, 2018.
Prior Publication US 2021/0037576 A1, Feb. 4, 2021
Int. Cl. H04W 74/0833 (2024.01); H04L 1/1867 (2023.01); H04L 5/00 (2006.01); H04W 52/36 (2009.01); H04W 72/0446 (2023.01); H04W 76/11 (2018.01)
CPC H04W 74/0833 (2013.01) [H04L 1/189 (2013.01); H04L 5/0051 (2013.01); H04W 52/36 (2013.01); H04W 72/0446 (2013.01); H04W 76/11 (2018.02)] 22 Claims
OG exemplary drawing
 
1. A communication method, performed by a terminal device or a chip for the terminal device, comprising:
in a 2-step random access procedure, sending a first random access preamble to a network device at a first initial transmit power, and sending first data to the network device at a second initial transmit power, wherein the first random access preamble and the first data are comprised in a first message of the 2-step random access procedure; and
in the 2-step random access procedure, retransmitting the first random access preamble at a first retransmission transmit power, and retransmitting the first data at a second retransmission transmit power in response to no response received during a reception window after sending the first message,
wherein the first retransmission transmit power is a first sum of the first initial transmit power and a first power ramping amount, the second retransmission transmit power is a second sum of the second initial transmit power and a second power ramping amount, the first power ramping amount is a first product of a first power ramping step and a first quantity of times of power ramping, the second power ramping amount is a second product of a second power ramping step and a second quantity of times of power ramping, and the first power ramping step for calculating the first retransmission transmit power used in the 2-step random access procedure is equal to the second power ramping step for calculating the second retransmission transmit power used in the 2-step random access procedure, and
wherein the first power ramping step for calculating the first retransmission transmit power used in the 2-step random access procedure is equal to the second power ramping step for calculating the second retransmission transmit power used in the 2-step random access procedure such that the first retransmission transmit power is different from the second retransmission transmit power.