Beam failure recovery procedure in carrier aggregation
Wireless communications may comprise communications between a base station and a wireless device. A wireless device may perform a recovery procedure associated with a secondary cell and/or an access procedure associated with the secondary cell. Based on a deactivation condition associated with the secondary cell, the wireless device may abort the recovery procedure and/or the access procedure.
1 . A method comprising:
receiving, by a wireless device, one or more messages comprising one or more configuration parameters, wherein the one or more configuration parameters indicate an uplink resource, on an uplink bandwidth part of a cell, associated with beam failure recovery (BFR) for a cell group;
sending, by the wireless device, via the uplink resource on the uplink bandwidth part of the cell, and based on a first beam failure associated with a first cell of the cell group, a first uplink signal for BFR in one or more symbols of the uplink resource; and
sending, by the wireless device, via the uplink resource on the uplink bandwidth part of the cell, and based on a second beam failure associated with a second cell of the cell group, a second uplink signal for BFR in the one or more symbols of the uplink resource.
2 . The method of claim 1 , wherein the uplink resource comprises a physical uplink control channel (PUCCH) associated with a cell of the cell group.
3 . The method of claim 1 , further comprising detecting the first beam failure associated with the first cell of the cell group, wherein the detecting comprises:
determining that one or more first reference signals (RSs) of the first cell comprise a radio quality lower than a first threshold.
4 . The method of claim 1 , further comprising:
detecting, based on a block error rate (BLER), the first beam failure associated with the first cell of the cell group.
5 . The method of claim 1 , further comprising:
selecting a candidate reference signal (RS) from one or more second RSs of the first cell of the cell group, wherein the selected candidate RS is associated with a beam failure recovery request (BFRQ) resource, and wherein the selecting the candidate RS is before the sending the first uplink signal.
6 . The method of claim 1 , wherein a candidate reference signal (RS) from one or more second RSs of the first cell, of the cell group, comprises a radio quality higher than a second threshold.
7 . The method of claim 6 , further comprising:
determining, based on a layer-1 reference signal received power (L1-RSRP), the second threshold.
8 . The method of claim 1 , wherein the one or more configuration parameters further indicate:
one or more first reference signals (RSs) of the first cell of the cell group;
one or more second RSs of the first cell; or
one or more beam failure recovery request (BFRQ) resources associated with the second cell of the cell group.
9 . The method of claim 1 , wherein the one or more configuration parameters indicate:
a first preamble for BFR of the first cell of the cell group;
a second preamble for BFR of the second cell of the cell group, wherein the first preamble is different from the second preamble; and
a time-frequency resource associated with the first cell for the BFR of the first cell and the BFR of the second cell.
10 . The method of claim 9 , further comprising:
sending, by the wireless device, based on the first beam failure associated with the first cell, the first preamble via the time-frequency resource associated with the first cell to perform BFR of the first cell; and
sending, by the wireless device, based on the second beam failure associated with the second cell, the second preamble via the time-frequency resource associated with the first cell to perform BFR of the second cell.
11 . A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive one or more messages comprising one or more configuration parameters, wherein the one or more configuration parameters indicate an uplink resource, on an uplink bandwidth part of a cell, associated with beam failure recovery (BFR) for a cell group;
send, via the uplink resource on the uplink bandwidth part of the cell, and based on a first beam failure associated with a first cell of the cell group, a first uplink signal for BFR in one or more symbols of the uplink resource; and
send, via the uplink resource on the uplink bandwidth part of the cell, and based on a second beam failure associated with a second cell of the cell group, a second uplink signal for BFR in the one or more symbols of the uplink resource.
12 . The wireless device of claim 11 , wherein the uplink resource comprises a physical uplink control channel (PUCCH) associated with a cell of the cell group.
13 . The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to detect the first beam failure associated with the first cell of the cell group by causing:
determining that one or more first reference signals (RSs) of the first cell comprise a radio quality lower than a first threshold.
14 . The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:
detect, based on a block error rate (BLER), the first beam failure associated with the first cell of the cell group.
15 . The wireless device of claim 11 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to select, before sending the first uplink signal, a candidate reference signal (RS) from one or more second RSs of the first cell of the cell group, wherein the selected candidate RS is associated with a beam failure recovery request (BFRQ) resource.
16 . The wireless device of claim 11 , wherein a candidate reference signal (RS) from one or more second RSs of the first cell, of the cell group, comprises a radio quality higher than a second threshold.
17 . The wireless device of claim 16 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:
determine, based on a layer-1 reference signal received power (L1-RSRP), the second threshold.
18 . The wireless device of claim 11 , wherein the one or more configuration parameters further indicate:
one or more first reference signals (RSS) of the first cell of the cell group;
one or more second RSs of the first cell; or
one or more beam failure recovery request (BFRQ) resources associated with the second cell of the cell group.
19 . The wireless device of claim 11 , wherein the one or more configuration parameters indicate:
a first preamble for BFR of the first cell of the cell group;
a second preamble for BFR of the second cell of the cell group, wherein the first preamble is different from the second preamble; and
a time-frequency resource associated with the first cell for the BFR of the first cell and the BFR of the second cell.
20 . The wireless device of claim 19 , wherein the instructions, when executed by the one or more processors, further cause the wireless device to:
send, based on the first beam failure associated with the first cell, the first preamble via the time-frequency resource associated with the first cell to perform BFR of the first cell; and
send, based on the second beam failure associated with the second cell, the second preamble via the time-frequency resource associated with the first cell to perform BFR of the second cell.
21 . A method comprising:
sending, by a base station and to a wireless device, one or more messages comprising one or more configuration parameters, wherein the one or more configuration parameters indicate an uplink resource, on an uplink bandwidth part of a cell, associated with beam failure recovery (BFR) for a cell group;
receiving, from the wireless device, via the uplink resource on the uplink bandwidth part of the cell, and based on a first beam failure associated with a first cell of the cell group, a first uplink signal for BFR in one or more symbols of the uplink resource; and
receiving, from the wireless device, via the uplink resource on the uplink bandwidth part of the cell, and based on a second beam failure associated with a second cell of the cell group, a second uplink signal for BFR in the one or more symbols of the uplink resource.
22 . The method of claim 21 , wherein the uplink resource comprises a physical uplink control channel (PUCCH) associated with a cell of the cell group.
23 . The method of claim 21 , wherein a candidate reference signal (RS) from one or more second RSs of the first cell of the cell group, comprises a radio quality higher than a second threshold.
24 . The method of claim 21 , wherein the one or more configuration parameters further indicate:
one or more first reference signals (RSs) of the first cell of the cell group;
one or more second RSs of the first cell; or
one or more beam failure recovery request (BFRQ) resources associated with the second cell of the cell group.
25 . The method of claim 21 , wherein the one or more configuration parameters indicate:
a first preamble for BFR of the first cell of the cell group;
a second preamble for BFR of the second cell of the cell group, wherein the first preamble is different from the second preamble; and
a time-frequency resource associated with the first cell for the BFR of the first cell and the BFR of the second cell.
26 . The method of claim 21 , wherein the one or more configuration parameters further comprise one or more of:
a first channel state information reference signal (CSI-RS); or
a first synchronization signal (SS) block.
27 . The method of claim 21 , wherein the one or more configuration parameters further comprise one or more of:
a second channel state information reference signal (CSI-RS); or
a second synchronization signal (SS) block.
28 . A base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the base station to:
send, to a wireless device, one or more messages comprising one or more configuration parameters, wherein the one or more configuration parameters indicate an uplink resource, on an uplink bandwidth part of a cell, associated with beam failure recovery (BFR) for a cell group;
receive, from the wireless device, via the uplink resource on the uplink bandwidth part of the cell, and based on a first beam failure associated with a first cell of the cell group, a first uplink signal for BFR in one or more symbols of the uplink resource; and
receive, from the wireless device, via the uplink resource on the uplink bandwidth part of the cell, and based on a second beam failure associated with a second cell of the cell group, a second uplink signal for BFR in the one or more symbols of the uplink resource.
29 . The base station of claim 28 , wherein the uplink resource comprises a physical uplink control channel (PUCCH) associated with a cell of the cell group.
30 . The base station of claim 28 , wherein a candidate reference signal (RS) from one or more second RSs of the first cell of the cell group, comprises a radio quality higher than a second threshold.
31 . The base station of claim 28 , wherein the one or more configuration parameters further indicate:
one or more first reference signals (RSs) of the first cell of the cell group;
one or more second RSs of the first cell; or
one or more beam failure recovery request (BFRQ) resources associated with the second cell of the cell group.
32 . The base station of claim 28 , wherein the one or more configuration parameters indicate:
a first preamble for BFR of the first cell of the cell group;
a second preamble for BFR of the second cell of the cell group, wherein the first preamble is different from the second preamble; and
a time-frequency resource associated with the first cell for the BFR of the first cell and the BFR of the second cell.
33 . The base station of claim 28 , wherein the one or more configuration parameters further comprise one or more of:
a first channel state information reference signal (CSI-RS); or
a first synchronization signal (SS) block.
34 . The base station of claim 28 , wherein the one or more configuration parameters further comprise one or more of:
a second channel state information reference signal (CSI-RS); or
a second synchronization signal (SS) block.