IP Library Granted Patent US 11,394,445
Granted Patent B2
US 11,394,445 · App. 17/259,404 · Granted Jul 19, 2022

User terminal

Inventors: Yuki Matsumura (Tokyo, JP); Satoshi Nagata (Tokyo, JP); Jing Wang (Beijing, CN); Xiaolin Hou (Beijing, CN)
Assignee: NTT DOCOMO, INC.
H04B7/0632H04B7/0641H04B7/0654H04B17/382
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Quick Facts
Patent No.
US 11,394,445
App. No.
17/259,404
Granted
Jul 19, 2022
Kind
B2
Abstract

For proper beam failure detection or beam failure recovery even when a plurality of transmission points are used, an aspect of user equipment of the present disclosure includes: a receiving section configured to receive information regarding a number or proportion of at least one of a beam, a link, and a reference signal used to specify partial beam failure detection with respect to one or more transmission/reception points; and a control section configured to perform partial beam failure detection at one or a plurality of transmission/reception points based on the information.

Claims (12)

1. A terminal comprising:

a receiver configured to receive information regarding a number or proportion of at least one of a beam, a link, and a reference signal used to specify partial beam failure detection with respect to one or more transmission/reception points; and

a processor configured to perform partial beam failure detection at one or a plurality of transmission/reception points based on the information, and to perform the partial beam failure detection only with respect to a specific transmission/reception point configured in advance.

2. The terminal according to claim 1 , wherein the processor independently determines the number or proportion of at least one of the beam, the link, and the reference signal used to specify the partial beam failure detection at each transmission/reception point based on the information.

3. The terminal according to claim 2 , wherein the processor performs control to transmit a recovery request to at least one of a transmission/reception point where the partial beam failure has been detected, another transmission/reception point, and a fixed transmission/reception point in response to the partial beam failure detection by using an uplink control channel or uplink shared channel.

4. The terminal according to claim 2 , wherein the processor performs control to transmit a recovery request by using a random access channel when an uplink control channel or uplink shared channel available for communication is absent in at least one of a transmission/reception point where the partial beam failure has been detected, another transmission/reception point, and a fixed transmission/reception point.

5. The terminal according to claim 1 , wherein the processor determines the number or proportion of at least one of the beam, the link, and the reference signal used to specify the partial beam failure detection at the plurality of transmission/reception points based on the information.

6. The terminal according to claim 5 , wherein the processor performs control to transmit a recovery request to at least one of a transmission/reception point where the partial beam failure has been detected, another transmission/reception point, and a fixed transmission/reception point in response to the partial beam failure detection by using an uplink control channel or uplink shared channel.

7. The terminal according to claim 5 , wherein the processor performs control to transmit a recovery request by using a random access channel when an uplink control channel or uplink shared channel available for communication is absent in at least one of a transmission/reception point where the partial beam failure has been detected, another transmission/reception point, and a fixed transmission/reception point.

8. The terminal according to claim 1 , wherein the processor performs control to transmit a recovery request to at least one of a transmission/reception point where the partial beam failure has been detected, another transmission/reception point, and a fixed transmission/reception point in response to the partial beam failure detection by using an uplink control channel or uplink shared channel.

9. The terminal according to claim 8 , wherein the processor performs control to transmit a recovery request by using a random access channel when an uplink control channel or uplink shared channel available for communication is absent in at least one of a transmission/reception point where the partial beam failure has been detected, another transmission/reception point, and a fixed transmission/reception point.

10. The terminal according to claim 1 , wherein the processor performs control to transmit a recovery request by using a random access channel when an uplink control channel or uplink shared channel available for communication is absent in at least one of a transmission/reception point where the partial beam failure has been detected, another transmission/reception point, and a fixed transmission/reception point.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 15, 2021
From: MATSUMURA, YUKI; NAGATA, SATOSHI; WANG, JING; HOU, XIAOLIN
To: NTT DOCOMO, INC.
Reel/Frame 055012/0236 →
Continuity (1)
Related Publication 20210126690A1 · Apr 29, 2021