Techniques for reference signal interference canceling or rate matching
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, information that identifies an association between a first cell of a first radio access technology (RAT) and a second cell of a second RAT. The UE may perform a measurement for the first cell. The UE may determine that the measurement for the first cell satisfies a threshold value. The UE may perform an interference canceling operation for a reference signal of the second cell, or a de-weighting operation for one or more resource elements in which the reference signal interferes, based at least in part on the determination that the measurement for the first cell satisfies the threshold value and the association between the first cell and the second cell. Numerous other aspects are described.
1 . A method of wireless communication performed by a user equipment (UE), comprising:
transmitting, to a network entity, a measurement for a first cell of a first radio access technology (RAT); and
receiving, from the network entity, a configuration for rate matching around one or more reference signals of a second cell of a second RAT based at least in part on the measurement for the first cell satisfying a threshold value and an association between the first cell and the second cell,
wherein the association between the first cell and the second cell is based at least in part on downlink signals of the first RAT and downlink signals of the second RAT being at least one of transmitted in a time synchronized manner, transmitted from a same transmission reception point (TRP), transmitted from a same antenna panel, or transmitted using a same precoding.
2 . The method of claim 1 , wherein the one or more reference signals include a cell-specific reference signal, a channel state information reference signal, a primary synchronization signal, or a secondary synchronization signal.
3 . The method of claim 1 , wherein the first RAT is a New Radio RAT and the second RAT is an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access RAT.
4 . The method of claim 1 , wherein the measurement for the first cell is of a synchronization signal block, a tracking reference signal, or a channel state information reference signal.
5 . The method of claim 1 , wherein the threshold value is a reference signal received power value, a received signal strength indicator value, a reference signal received quality value, a signal to interference plus noise ratio value, a path-loss estimate value, a modulation and coding scheme index value, a number of transmission layers, or an aggregation level.
6 . The method of claim 1 , further comprising:
receiving information identifying one or more cells of the first RAT for which the UE is to perform measurements, the one or more cells including the first cell.
7 . The method of claim 1 , further comprising:
receiving a physical downlink shared channel transmission on the first cell using the configuration for rate matching.
8 . A method of wireless communication performed by a network entity, comprising:
receiving, from a user equipment (UE), a measurement for a first cell of a first radio access technology (RAT);
determining that the measurement for the first cell satisfies a threshold value; and
transmitting, to the UE, a configuration for rate matching around one or more reference signals of a second cell of a second RAT based at least in part on the determination that the measurement for the first cell satisfies the threshold value and an association between the first cell and the second cell,
wherein the association between the first cell and the second cell is based at least in part on downlink signals of the first RAT and downlink signals of the second RAT being at least one of transmitted in a time synchronized manner, transmitted from a same transmission reception point (TRP), transmitted from a same antenna panel, or transmitted using a same precoding.
9 . The method of claim 8 , wherein the first RAT is a New Radio RAT and the second RAT is an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access RAT.
10 . The method of claim 8 , wherein the measurement for the first cell is of a synchronization signal block, a tracking reference signal, or a channel state information reference signal.
11 . The method of claim 8 , wherein the threshold value is a reference signal received power value, a received signal strength indicator value, a reference signal received quality value, a signal to interference plus noise ratio value, a path-loss estimate value, a modulation and coding scheme index value, a number of transmission layers, or an aggregation level.
12 . The method of claim 8 , further comprising:
transmitting information identifying one or more cells of the first RAT for which the UE is to perform measurements, the one or more cells including the first cell.
13 . The method of claim 8 , wherein the configuration for rate matching is transmitted based at least in part on a level of interference from the second cell satisfying a threshold.
14 . The method of claim 8 , further comprising:
transmitting a physical downlink shared channel (PDSCH) transmission of the first RAT based at least in part on transmitting the configuration for rate matching.
15 . The method of claim 14 , wherein the PDSCH transmission is rate matched around resource elements (REs) that include the one or more reference signals.
16 . A user equipment (UE) for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to cause the UE to:
transmit, to a network entity, a measurement for a first cell of a first radio access technology (RAT); and
receive, from the network entity, a configuration for rate matching around one or more reference signals of a second cell of a second RAT based at least in part on the measurement for the first cell satisfying a threshold value and an association between the first cell and the second cell,
wherein the association between the first cell and the second cell is based at least in part on downlink signals of the first RAT and downlink signals of the second RAT being at least one of transmitted in a time synchronized manner, transmitted from a same transmission reception point (TRP), transmitted from a same antenna panel, or transmitted using a same precoding.
17 . The UE of claim 16 , wherein the one or more reference signals include a cell-specific reference signal, a channel state information reference signal, a primary synchronization signal, or a secondary synchronization signal.
18 . The UE of claim 16 , wherein the first RAT is a New Radio RAT and the second RAT is an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access RAT.
19 . The UE of claim 16 , wherein the measurement for the first cell is of a synchronization signal block, a tracking reference signal, or a channel state information reference signal.
20 . The UE of claim 16 , wherein the threshold value is a reference signal received power value, a received signal strength indicator value, a reference signal received quality value, a signal to interference plus noise ratio value, a path-loss estimate value, a modulation and coding scheme index value, a number of transmission layers, or an aggregation level.
21 . The UE of claim 16 , wherein the one or more processors are further configured to cause the UE to:
receive information identifying one or more cells of the first RAT for which the UE is to perform measurements, the one or more cells including the first cell.
22 . The UE of claim 16 , wherein the one or more processors are further configured to cause the UE to:
receive a physical downlink shared channel transmission on the first cell using the configuration for rate matching.
23 . A network entity for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to cause the network entity to:
receive, from a user equipment (UE), a measurement for a first cell of a first radio access technology (RAT);
determine that the measurement for the first cell satisfies a threshold value; and
transmit, to the UE, a configuration for rate matching around one or more reference signals of a second cell of a second RAT based at least in part on the determination that the measurement for the first cell satisfies the threshold value and an association between the first cell and the second cell,
wherein the association between the first cell and the second cell is based at least in part on downlink signals of the first RAT and downlink signals of the second RAT being at least one of transmitted in a time synchronized manner, transmitted from a same transmission reception point (TRP), transmitted from a same antenna panel, or transmitted using a same precoding.
24 . The network entity of claim 23 , wherein the first RAT is a New Radio RAT and the second RAT is an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access RAT.
25 . The network entity of claim 23 , wherein the measurement for the first cell is of a synchronization signal block, a tracking reference signal, or a channel state information reference signal.
26 . The network entity of claim 23 , wherein the threshold value is a reference signal received power value, a received signal strength indicator value, a reference signal received quality value, a signal to interference plus noise ratio value, a path-loss estimate value, a modulation and coding scheme index value, a number of transmission layers, or an aggregation level.
27 . The network entity of claim 23 , wherein the one or more processors are further configured to cause the network entity to:
transmit information identifying one or more cells of the first RAT for which the UE is to perform measurements, the one or more cells including the first cell.
28 . The network entity of claim 23 , wherein the configuration for rate matching is transmitted based at least in part on a level of interference from the second cell satisfying a threshold.
29 . The network entity of claim 23 , wherein the one or more processors are further configured to cause the network entity to:
transmit a physical downlink shared channel (PDSCH) transmission of the first RAT based at least in part on transmitting the configuration for rate matching.
30 . The network entity of claim 29 , wherein the PDSCH transmission is rate matched around resource elements (REs) that include the one or more reference signals.