Method and Apparatus for Configuring a Triggering Condition of a Beam Failure Event and a Communication System

• US 20200137750A1
• Filed: 12/30/2019
• Published: 04/30/2020
• Est. Priority Date: 08/11/2017
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: SONG, Lei, WANG, Xin
• Granted Patent: US 11,272,487 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 1/74 for increasing reliability, e.g. using redundant or spare channels or apparatus replacing by standby devices for amplifiers H03F1/52, H03F1/542
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04B 7/063 Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
• CPC Class Codes: H04B 7/0695 using beam selection
• CPC Class Codes: H04B 7/088 using beam selection
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 72/046 the resource being in the space domain, e.g. beams
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

Method and apparatus for configuring a triggering condition of a beam failure event and a communication system. The method includes: a network device configures a UE with one or more control channel monitoring groups, so that when the UE detects that all beams to which a monitoring group corresponds fail in transmission, the UE reports beam failure event of the monitoring group fails in transmission; wherein, each monitoring group corresponds to one or more pieces of downlink control information (DCI). By configuring regarding the triggering conditions of the beam failure events, detection and report of beam failure in more complex scenarios may be supported, such as a scenario where one piece of DCI is transmitted in multiple control resource sets, and a scenario where multiple pieces of DCI are transmitted in one control resource set, etc.

Claims

1. An apparatus for configuring a monitoring group, the apparatus comprising:

a configuring unit configured to configure UE with one or more control channel monitoring groups, so that when the UE detects that all beams to which a monitoring group corresponds fail in transmission, the UE reports beam failure event of the monitoring group fails in transmission;

wherein, each monitoring group corresponds to one or more pieces of downlink control information (DCI).

2. The apparatus according to claim 1, wherein each monitoring group comprises IDs of all quasi-co-locations to which one or more pieces of DCI correspond, configuration of the IDs of the quasi-co-locations of the multiple pieces of DCI being identical.

3. The apparatus according to claim 1, wherein each monitoring group comprises an ID of a physical resource to which one piece of DCI corresponds.

4. The apparatus according to claim 3, wherein the ID of the physical resource comprises at least one of the followings:

an ID of a control resource set, an ID of a search space, and an ID of a set of control channel candidates.

5. The apparatus according to claim 1, wherein one piece of DCI corresponds to one DCI format, or one piece of DCI corresponds to a control channel candidate, or one piece of DCI corresponds to a set of control channel candidates.

6. An apparatus for configuring a triggering condition of a beam failure event, the apparatus comprising:

a configuring unit configured to configure UE with triggering conditions of one or more beam failure events, so that when the triggering conditions are satisfied, the UE reports beam failure events.

7. The apparatus according to claim 6, wherein the triggering conditions are one or more of the following that:

all beams used by all DCI contained in any control resource set fail in transmission;

all beams used by all DCI contained in all control resource sets fail in transmission; and

all beams used by all DCI contained in a predefined control resource set fail in transmission.

8. A apparatus for triggering a beam failure event, applicable to UE, the apparatus comprising:

a determining unit configured to determine whether a trigger condition of a beam failure event is satisfied according to configuration of a network device; and

a reporting unit configured to report a beam failure event when the trigger condition of a beam failure event is satisfied.

9. The apparatus according to claim 8, wherein the configuration of a network device is:

one or more control channel monitoring groups, each monitoring group corresponding to one or more pieces of DCI, and when the UE detects that all beams to which a monitoring group corresponds fail in transmission, the reporting unit reports beam failure event of the monitoring group fails in transmission.

10. The apparatus according to claim 8, wherein the configuration of a network device is:

triggering conditions of one or more beam failure events, and when the UE detects that the triggering conditions are satisfied, the reporting unit reports beam failure events.