Methods and devices for beam failure recovery
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsJinhua Liu, Min Wang
Life of this patent
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Abstract
The present disclosure provides a method (100) in a network device for configuration of Beam Failure Recovery, BFR. The method (100) includes: receiving (110) from a terminal device a beam failure report associated with a Secondary Cell, SCell. The method (100) further includes: configuring (120) the terminal device with at least one of the following BFR options: BFR with Physical Uplink Control Channel, PUCCH, BFR with Contention Free Random Access, CFRA, BFR with Contention Based Random Access, CBRA, and BFR without Physical Random Access Channel, PRACH, and PUCCH.
Claims20
A method in a network device for configuration of Beam Failure Recovery (BFR), comprising:
- receiving from a terminal device a beam failure report associated with a Secondary Cell (SCell);
- and
- after receiving the beam failure report transmitted by the terminal device, transmitting to the terminal device a message comprising at least a first BFR option indicator indicating one of the following BFR options:
- BFR with Physical Uplink Control Channel (PUCCH);
- BFR with Contention Free Random Access (CFRA);
- BFR with Contention Based Random Access (CBRA);
- or
- BFR without Physical Random Access Channel (PRACH) and PUCCH, wherein
- the message comprising the first BFR option indicator further comprises information identifying a PRACH resource, and
- the method further comprise receiving a message transmitted by the terminal device using the identified PRACH resource.
A method performed by a terminal device for Beam Failure Recovery (BFR), comprising:
- detecting a beam failure associated with a Secondary Cell (SCell);
- transmitting to a network device a beam failure report associated with the beam failure;
- after transmitting to a network device a beam failure report associated with the beam failure, receiving from the network device a message comprising at least a first BFR option indicator indicating one of the following BFR options:
- BFR with Physical Uplink Control Channel (PUCCH);
- BFR with Contention Free Random Access (CFRA);
- BFR with Contention Based Random Access (CBRA);
- or
- BFR without Physical Random Access Channel (PRACH) and PUCCH;
- and
- performing a BFR procedure in accordance with the first BFR option indicator, wherein
- the message comprising the first BFR option indicator further comprises information identifying a PRACH resource, and
- performing the BFR procedure in accordance with the first BFR option indicator comprises performing a random access procedure using the identified PRACH resource.
A terminal device comprising a transceiver, a processor and a memory, the memory comprising instructions executable by the processor whereby the terminal device is configured to:
- detect a beam failure associated with a Secondary Cell (SCell);
- transmit to a network device a beam failure report associated with the beam failure;
- after transmitting to a network device a beam failure report associated with the beam failure, receive from the network device a message comprising at least a first beam failure recovery (BFR) option indicator indicating one of the following BFR options:
- BFR with Physical Uplink Control Channel (PUCCH);
- BFR with Contention Free Random Access (CFRA);
- BFR with Contention Based Random Access (CBRA);
- or
- BFR without Physical Random Access Channel (PRACH) and PUCCH;
- and
- performing a BFR procedure in accordance with the first BFR option indicator, wherein
- the message comprising the first BFR option indicator further comprises information identifying a PRACH resource, and
- performing the BFR procedure in accordance with the first BFR option indicator comprises performing a random access procedure using the identified PRACH resource.
Dependencies are inferred from the claim text.