US2022352963A1PendingUtilityA1

Methods and apparatus for new beam information reporting

69
Assignee: QUALCOMM INCPriority: Mar 29, 2019Filed: Jul 15, 2022Published: Nov 3, 2022
Est. expiryMar 29, 2039(~12.7 yrs left)· nominal 20-yr term from priority
Inventors:Tianyang BaiTao LuoJung Ho RyuKiran VenugopalYan ZhouJunyi LiXiao Feng Wang
H04W 76/15H04B 7/088H04W 80/02H04W 16/28H04W 74/004H04L 5/001H04W 72/046H04L 5/0091H04W 76/19H04L 5/0025H04W 74/02H04B 7/0695H04W 74/0833H04B 7/06964H04W 74/0838
69
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Claims

Abstract

A UE detects a beam failure on a first component carrier (CC) that is associated with a secondary cell and transmits a beam failure recovery request (BFRQ) to a base station on a second CC that is associated with a primary cell, the BFRQ indicating whether new beam information (NBI) for the first CC is included in the BFRQ.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method of wireless communication at a user equipment (UE), comprising:
 detecting a beam failure on a first component carrier (CC) that is associated with a secondary cell; and   transmitting a beam failure recovery request (BFRQ) to a base station on a second CC that is associated with a primary cell, the BFRQ indicating whether new beam information (NBI) for the first CC is included in the BFRQ.   
     
     
         2 . The method of  claim 1 , wherein the BFRQ is transmitted in at least one of a physical uplink control channel (PUCCH) or a medium access control (MAC) control element (MAC-CE) in a physical uplink shared channel (PUSCH). 
     
     
         3 . The method of  claim 2 , wherein transmitting the BFRQ includes:
 transmitting a scheduling request on the PUCCH in response to detecting the beam failure on the first CC;   receiving an uplink grant in response to the scheduling request; and   transmitting the MAC-CE comprising the NBI.   
     
     
         4 . The method of  claim 1 , wherein the BFRQ is transmitted in resources configured in the second CC to indicate the BFRQ for the first CC. 
     
     
         5 . The method of  claim 4 , further comprising:
 receiving a configuration of the resources in the second CC for transmission of the BFRQ for the first CC.   
     
     
         6 . The method of  claim 1 , further comprising:
 determining whether to include the NBI in the BFRQ based on a determination to transmit the BFRQ to the base station on the first CC or the second CC.   
     
     
         7 . The method of  claim 1 , wherein the BFRQ includes at least one field or index indicating the NBI or indicating there is no NBI in the BFRQ. 
     
     
         8 . The method of  claim 1 , wherein the BFRQ without the NBI is transmitted to the base station on the first CC, wherein a new beam is indicated based on one or more resources of the BFRQ. 
     
     
         9 . The method of  claim 1 , wherein a presence or absence of the NBI in the BFRQ is indicated by at least one of:
 an index of the BFRQ,   a field of the BFRQ, a reserved field in a PUCCH or a MAC-CE in a PUSCH carrying the BFRQ, or   a BFRQ format of the BFRQ.   
     
     
         10 . The method of  claim 1 , further comprising:
 identifying a new beam for the first CC, wherein the BFRQ is transmitted to the base station on the first CC using a random access channel (RACH) procedure when the new beam for the first CC is identified.   
     
     
         11 . The method of  claim 10 , wherein a resource configuration for the first CC is indicated using a contention free RACH (CFRA) procedure, wherein the BFRQ is transmitted on the first CC based on an indicated resource configuration. 
     
     
         12 . The method of  claim 1 , further comprising:
 measuring a beam failure detection (BFD) RS on the first CC, wherein the beam failure is detected on the first CC by measuring the BFD RS.   
     
     
         13 . An apparatus for wireless communication at a user equipment (UE), comprising:
 memory; and   at least one processor coupled to the memory and configured to:
 detect a beam failure on a first component carrier (CC) that is associated with a secondary cell; and 
 transmit a beam failure recovery request (BFRQ) to a base station on a second CC that is associated with a primary cell, the BFRQ indicating whether new beam information (NBI) for the first CC is included in the BFRQ. 
   
     
     
         14 . The apparatus of  claim 13 , wherein the BFRQ is comprised in at least one of a physical uplink control channel (PUCCH) or a medium access control (MAC) control element (MAC-CE) in a physical uplink shared channel (PUSCH). 
     
     
         15 . The apparatus of  claim 14 , wherein to transmit the BFRQ, the at least one processor is further configured to:
 transmit a scheduling request on the PUCCH in response to detecting the beam failure on the first CC;   receive an uplink grant in response to the scheduling request; and   transmit the MAC-CE that comprises the NBI.   
     
     
         16 . The apparatus of  claim 14 , wherein the BFRQ is in resources configured in the second CC to indicate the BFRQ for the first CC. 
     
     
         17 . The apparatus of  claim 16 , wherein the at least one processor is further configured to:
 receive a configuration of the resources in the second CC for transmission of the BFRQ for the first CC.   
     
     
         18 . The apparatus of  claim 13 , wherein the at least one processor is further configured to determine whether to include the NBI in the BFRQ based on a determination to transmit the BFRQ to the base station on the first CC or the second CC. 
     
     
         19 . The apparatus of  claim 13 , wherein the BFRQ includes at least one field or index indicating the NBI or indicating there is no NBI in the BFRQ. 
     
     
         20 . The apparatus of  claim 13 , wherein the BFRQ without the NBI is transmitted to the base station on the first CC, wherein a new beam is indicated based on one or more resources of the BFRQ. 
     
     
         21 . The apparatus of  claim 13 , wherein a presence or absence of the NBI in the BFRQ is indicated by at least one of:
 an index of the BFRQ,   a field of the BFRQ, a reserved field in a PUCCH or a MAC-CE in a PUSCH carrying the BFRQ, or   a BFRQ format of the BFRQ.   
     
     
         22 . The apparatus of  claim 13 , wherein the at least one processor is further configured to:
 identify a new beam for the first CC, wherein the BFRQ is transmitted to the base station on the first CC using a random access channel (RACH) procedure when the new beam for the first CC is identified.   
     
     
         23 . The apparatus of  claim 22 , wherein a resource configuration for the first CC is indicated using a contention free RACH (CFRA) procedure, wherein the BFRQ is transmitted on the first CC based on an indicated resource configuration. 
     
     
         24 . The apparatus of  claim 13 , wherein the at least one processor is further configured to:
 measure a beam failure detection (BFD) RS on the first CC, wherein the beam failure is detected on the first CC by measuring the BFD RS.   
     
     
         25 . The apparatus of  claim 13 , further comprising a transceiver coupled to the at least one processor. 
     
     
         26 . A method of wireless communication at a base station, comprising:
 receiving a beam failure recovery request (BFRQ) on a second component carrier (CC), which is associated with a primary cell, from a user equipment (UE), the BFRQ indicating a beam failure on a first component carrier (CC) that is associated with a secondary cell, and indicating whether new beam information (NBI) is included in the BFRQ for the first CC; and   initiating a beam failure recovery (BFR) procedure with the UE for the first CC based on the BFRQ.   
     
     
         27 . The method of  claim 26 , wherein the BFRQ is received in at least one of a physical uplink control channel (PUCCH) or a medium access control (MAC) control element (MAC-CE) in a physical uplink shared channel (PUSCH). 
     
     
         28 . The method of  claim 27 , further comprising:
 transmitting a configuration of resources in the second CC for transmission of the BFRQ for the first CC, wherein the BFRQ is received in the resources configured in the second CC.   
     
     
         29 . An apparatus for wireless communication at a base station, comprising:
 memory; and   at least one processor coupled to the memory and configured to:
 receive a beam failure recovery request (BFRQ) on a second component carrier (CC), which is associated with a primary cell, from a user equipment (UE), the BFRQ indicating a beam failure on a first component carrier (CC) that is associated with a secondary cell, and indicating whether new beam information (NBI) is included in the BFRQ for the first CC; and 
 initiate a beam failure recovery (BFR) procedure with the UE for the first CC based on the BFRQ. 
   
     
     
         30 . The apparatus of  claim 29 , wherein the BFRQ is comprised in at least one of a physical uplink control channel (PUCCH) or a medium access control (MAC) control element (MAC-CE) in a physical uplink shared channel (PUSCH).

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