US 12,250,732 B2
Methods and devices for transmitting and receiving random access response and communication system
Yang Lu, Beijing (CN)
Assigned to FUJITSU LIMITED, Kawasaki (JP)
Filed by FUJITSU LIMITED, Kawasaki (JP)
Filed on Sep. 24, 2021, as Appl. No. 17/484,261.
Application 17/484,261 is a continuation of application No. PCT/CN2019/080618, filed on Mar. 29, 2019.
Prior Publication US 2022/0015155 A1, Jan. 13, 2022
Int. Cl. H04W 74/08 (2024.01); H04W 24/08 (2009.01); H04W 72/1263 (2023.01); H04W 74/00 (2009.01); H04W 74/0833 (2024.01)
CPC H04W 74/0841 (2013.01) [H04W 24/08 (2013.01); H04W 72/1263 (2013.01); H04W 74/006 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A device for receiving a random access response, applicable to a terminal equipment, the device comprising:
a transmitter configured to transmit a first message (MsgA) of a two-step random access procedure to a network device; wherein the first message (MsgA) comprises a preamble and physical uplink shared channel (PUSCH) data; and
a monitor configured to monitor, in a first random access response reception time window, a physical downlink control channel (PDCCH) scheduling a first random access response in a two-step random access procedure transmitted by the network device, the first random access response at least containing a C-RNTI and contention resolution information allocated for the terminal equipment, wherein
the monitor is further configured to monitor, in the first random access response reception time window, a physical downlink control channel (PDCCH) scheduling a second random access response transmitted by the network device, the second random access response at least containing a TC-RNTI allocated for the terminal equipment and an uplink resource grant used for transmitting the Msg3 of a four-step random access by the terminal equipment, and
when the monitor receives the first random access response or the second random access response in the first random access response reception time window, the monitor stops monitoring:
the physical downlink control channel (PDCCH) scheduling the first random access response, and
the physical downlink control channel (PDCCH) scheduling the second random access response.