Increasing reliability during multi-connectivity handovers
The present disclosure generally relates to techniques to increase reliability of communications within a network during a low reliability period. The network may include a user equipment (UE) communicatively coupled with one or more transmit/receive points (TRPs), with the communications between the UE and the one more TRPs requiring a reliability above a first reliability threshold. A processor of a network entity may identify a low reliability period which occurs when the reliability of the communications is determined to be below a second reliability threshold. The processor may cause the network to perform one or more remedial actions to increase the reliability during the low reliability period.
1. A method for wireless communications comprising:
identifying, by a processor of a network entity, a low reliability period for communications between a network comprising one or more transmit/receive points (TRPs) and a user equipment (UE), wherein the communications require a reliability above a first reliability threshold and the low reliability period occurs when reliability for the communications is determined to be below a second reliability threshold; and
causing, by the processor, the network to perform one or more remedial actions to increase the reliability during the low reliability period,
wherein the second reliability threshold is at least one of lower or a percentage of the first reliability threshold.
2. The method of claim 1 , wherein the reliability for the communications is determined to be below the second reliability threshold during one or more of replacing a TRP among the one or more TRPs, removing a TRP among the one or more TRPs, or adding a TRP among the one or more TRPs.
3. The method of claim 1 , wherein the one or more remedial actions further comprises causing at least one of the one or more TRPs to increase transmit power for one or more of downlink resources associated with the UE and uplink resources associated with the UE.
4. The method of claim 1 , wherein the one or more remedial actions further comprises causing at least one of the one or more TRPs to execute one or more of using physical downlink control channel (PDCCH) repetition for the UE, increasing an aggregation level for PDCCH for the UE, increasing frequency of channel state information (CSI) reporting for the UE, or using turbo HARQ for the UE.
5. The method of claim 1 , wherein the one or more remedial actions further comprises causing at least one of the one or more TRPs to use a lower packet error rate (PER) target for the UE, or using a lower modulation and coding scheme (MCS) required for a packet error rate (PER) to be below the PER target.
6. The method of claim 1 , wherein the one or more remedial actions further comprises causing at least one of the one or more TRPs to use a modulation and coding scheme (MCS) for the UE based on unfiltered channel state information (CSI).
7. The method of claim 1 , wherein the one or more remedial actions further comprises causing at least one of the one or more TRPs to bias channel state information (CSI) used in determining MCS for the UE to increase the reliability of the communications.
8. The method of claim 1 , wherein the one or more remedial actions further comprises causing at least one of the one or more TRPs to increase number of grants associated with the UE for retransmissions.
9. The method of claim 1 , wherein the one or more remedial actions further comprises causing the network to add additional component carriers for carrier aggregation in the UE and sending duplicated information over the additional component carriers using packet duplication.
10. The method of claim 1 , wherein the one or more remedial actions further comprises causing at least one of the one or more TRPs to use reserved resources for one or more of transmission to the UE and reception from the UE.
11. The method of claim 1 , wherein the one or more remedial actions further comprises causing at least one of the one or more TRPs to request the UE to perform one or more remedial actions.
12. The method of claim 11 , wherein in response to the request to the UE to perform one or more remedial actions, increasing transmit power for one or more of uplink resources associated with the UE.
13. The method of claim 11 , wherein in response to the request to the UE to perform one or more remedial actions, modifying a channel quality indicator (CQI) report by lowering one or more CQI values in the CQI report.
14. The method of claim 11 , wherein in response to the request to the UE to perform one or more remedial actions, requesting the network to perform one or more network based remedial actions.
15. A network entity for wireless communications comprising:
a memory; and
a processor communicatively coupled with the memory and configured to:
identify a low reliability period for communications between a network comprising one or more transmit/receive points (TRPs) and a user equipment (UE), wherein the communications require a reliability above a first reliability threshold and the low reliability period occurs when reliability for the communications is determined to be below a second reliability threshold; and
cause the network to perform one or more remedial actions to increase the reliability during the low reliability period,
wherein the second reliability threshold is at least one of lower or a percentage of the first reliability threshold.
16. The network entity of claim 15 , wherein the reliability for the communications is determined to be below the second reliability threshold during one or more of: replacing a TRP among the one or more TRPs, removing a TRP among the one or more TRPs, or adding a TRP among the one or more TRP.
17. A method for wireless communications comprising:
identifying, by a processor of a user equipment (UE), a low reliability period for communications between the UE and one or more transmit/receive points (TRPs) in a network, wherein the communications require a reliability above a first reliability threshold and the low reliability period occurs when reliability of the communications is determined to be below a second reliability threshold; and
performing, by the processor, one or more remedial actions in response to identifying the low reliability period,
wherein the second reliability threshold is at least one of lower or a percentage of the first reliability threshold.
18. The method of claim 17 , wherein the reliability for the communications is determined to be below the second reliability threshold during one or more of: replacing a TRP among the one or more TRPs, removing a TRP among the one or more TRPs, or adding a TRP among the one or more TRP.
19. The method of claim 17 , wherein the one or more remedial actions comprises increasing uplink transmit power for one or more of first transmissions and subsequent retransmissions to the one or more TRPs.
20. The method of claim 17 , wherein the one or more remedial actions comprises modifying channel quality indicator (CQI) reporting by reporting lower CQI values to cause more conservative link adaptations.
21. The method of claim 17 , wherein the one or more remedial actions comprises requesting the network to perform one or more network remedial actions.
22. A user equipment (UE) for wireless communications comprising:
a memory; and
a processor communicatively coupled with the memory and configured to:
identifying, by a processor of the UE, a low reliability period for communications between the UE and one or more transmit/receive points (TRPs) in a network, wherein the communications require a reliability above a first reliability threshold and the low reliability period occurs when reliability of the communications is determined to be below a second reliability threshold; and
performing, by the processor, one or more remedial actions in response to identifying the low reliability period,
wherein the second reliability threshold is at least one of lower or a percentage of the first reliability threshold.
23. The UE of claim 22 , wherein the reliability for the communications is determined to be below the second reliability threshold during one or more of: replacing a TRP among the one or more TRPs, removing a TRP among the one or more TRPs, or adding a TRP among the one or more TRP.
24. The UE of claim 22 , wherein the one or more remedial actions comprises increasing uplink transmit power for one or more of first transmissions and subsequent retransmissions to the one or more TRPs.
25. The UE of claim 22 , wherein the one or more remedial actions comprises modifying channel quality indicator (CQI) reporting by reporting lower CQI values to cause more conservative link adaptations.
26. The UE of claim 22 , wherein the one or more remedial actions comprises requesting the network to perform one or more network remedial actions.