IP Library › Granted Patent US 12,301,328
Granted Patent B2
US 12,301,328 · App. 18/385,928 · Granted May 13, 2025

Signal transmission, and signal reception apparatuses

Inventors: Zhe Chen (Beijing, CN); Lei Song (Beijing, CN); Lei Zhang (Beijing, CN); Xin Wang (Beijing, CN)
Assignee: FUJITSU LIMITED
H04B7/0695H04W72/046H04W72/0473H04W72/23H04W74/0833H04W76/11H04W76/19H04W76/27H04W80/02
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Quick Facts
Patent No.
US 12,301,328
App. No.
18/385,928
Granted
May 13, 2025
Kind
B2
Abstract

An apparatus includes: a receiver configured to: receive a downlink signal related to beam failure recovery, and receive a downlink reference signal; and a transmitter configured to, after receiving the downlink signal, transmit a first uplink signal on a first cell by using a first spatial filter identical to a second spatial filter receiving the downlink reference signal.

Claims (27)

1. A signal tranmission apparatus, comprising:

a receiver configured to:

receive a downlink signal related to beam failure recovery, and

receive a downlink reference signal; and

a transmitter configured to, after receiving the downlink signal, transmit a first uplink signal on a first cell by using a first spatial filter identical to a second spatial filter for receiving the downlink reference signal.

2. The signal transmission apparatus according to claim 1 , wherein, when a second cell is a cell on which a second uplink signal related to beam failure recovery is transmitted, the transmitter transmits the first uplink signal on the first cell by using the first spatial filter identical to the second spatial filter for receiving the downlink reference signal.

3. The signal transmission apparatus according to claim 1 , wherein, the downlink signal related to beam failure recovery is at least one of the following: a beam failure recovery response and downlink data information scheduled by a beam failure recovery response.

4. The signal transmission apparatus according to claim 3 , wherein, the beam failure recovery response is downlink control information (DCI) received in a search space provided by a higher layer parameter and scrambled by a cell radio network temporary identifier (C-RNTI) or a modulation and coding scheme cell radio network temporary identifier (MCS-C-RNTI).

5. The signal transmission apparatus according to claim 1 , wherein, the higher layer parameter meets at least one of the following: the higher layer parameter is configured by radio resource control (RRC) signaling, and

the higher layer parameter is used for configuring a search space set receiving a beam failure recovery random access response (BFR RAR).

6. A signal reception apparatus, comprising:

a transmitter configured to:

transmit a downlink signal related to beam failure recovery, and

transmit a downlink reference signal; and

a receiver configured to, after transmitting the downlink signal related to beam failure recovery, receive a first uplink signal on a first cell according to spatial information on transmitting the downlink reference signal.

7. The apparatus according to claim 6 , wherein, when a second cell is a cell on which a second uplink signal related to beam failure recovery is received, the receiver receives the second uplink signal on the first cell.

8. A communication system, comprising:

a base station includes:

a first transmitter configured to:

transmit a downlink signal related to beam failure recovery, and

transmit a downlink reference signal; and

a first receiver configured to, after transmitting the downlink signal related to beam failure recovery, receive a first uplink signal on a first cell; and

a terminal equipment or a user equipment includes:

a second receiver configured to:

receive the downlink signal related to beam failure recovery, and

receive the downlink reference signal; and

a second transmitter configured to, after receiving the downlink signal related to beam failure recovery, transmit the first uplink signal on a first cell by using a first spatial filter identical to a second spatial filter for receiving the downlink reference signal.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 5, 2026
From: FUJITSU LIMITED
To: 1FINITY INC.
Reel/Frame 074197/0244 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 1, 2023
From: CHEN, ZHE; SONG, LEI; ZHANG, LEI; WANG, XIN
To: FUJITSU LIMITED
Reel/Frame 065414/0470 →
Continuity (3)
Continuation 17183723 · Feb 24, 2021
Continuation PCTCN2018107718 · Sep 26, 2018
Related Publication 20240080081A1 · Mar 7, 2024
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