Method, terminal and base station in a wireless communication system
The present disclosure provides a method, a terminal and a base station for interference cancellation/mitigation/rejection in the presence of neighboring cell interference. The method provided by the present disclosure can effectively cancel/mitigate/reject interference of neighboring cells and improve the performance of a downlink transmission receiver by receiving configuration information (e.g., system assistant information) from a base station and performing interference processing based on the received configuration information.
1 . A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
transmitting, to a base station, UE capability information for supporting a cell reference signal-interference mitigation (CRS-IM) associated with an assistance of a network signaling, wherein the UE capability information includes at least one of first information indicating that the UE supports a neighboring long term evolution (LTE) cell CRS-IM with the assistance of the network signaling or second information indicating that the UE supports the neighboring LTE cell CRS-IM without the assistance of the network signaling;
receiving, from the base station, at least one configuration information on a LTE neighbor cell associated with a CRS; and
performing the CRS-IM based on the at least one configuration information on the LTE neighbor cell associated with the CRS,
wherein in case that the UE capability information includes the first information indicating that the UE supports a neighboring LTE cell CRS-IM with the assistance of the network signaling, the at least one configuration information on the LTE neighbor cell associated with the CRS includes information on a channel bandwidth.
2 . The method of claim 1 , wherein the at least one configuration information on the LTE neighbor cell associated with the CRS further includes at least one of information on a downlink center frequency, information on a physical cell identifier (ID), information on a multicast broadcast single frequency network (MBSFN) subframe configuration, information on a CRS antenna ports number, or information on a shifting value.
3 . The method of claim 1 ,
wherein the at least one configuration information on the LTE neighbor cell is associated with an overlapping spectrum for an LTE and a new radio (NR).
4 . A method performed by a base station in a wireless communication system, the method comprising:
receiving, from a user equipment (UE), UE capability information for supporting a cell reference signal-interference mitigation (CRS-IM) associated with an assistance of a network signaling, wherein the UE capability information includes at least one of first information indicating that the UE supports a neighboring long term evolution (LTE) cell CRS-IM with the assistance of the network signaling or second information indicating that the UE supports the neighboring LTE cell CRS-IM without the assistance of the network signaling;
generating at least one configuration information on a LTE neighbor cell associated with a CRS; and
transmitting, to the UE, the at least one configuration information on the LTE neighbor cell associated with the CRS,
wherein the CRS-IM is performed based on the at least one configuration information on the LTE neighbor cell associated with the CRS, and
wherein in case that the UE capability information includes the first information indicating that the UE supports a neighboring LTE cell CRS-IM with the assistance of the network signaling, the at least one configuration information on the LTE neighbor cell associated with the CRS includes information on a channel bandwidth.
5 . The method of claim 4 ,
wherein the at least one configuration information on the LTE neighbor cell associated with the CRS further includes at least one of information on a downlink center frequency, information on a physical cell identifier (ID), information on a multicast broadcast single frequency network (MBSFN) subframe configuration, information on a CRS antenna ports number, or information on a shifting value, and
wherein the at least one configuration information on the LTE neighbor cell is associated with an overlapping spectrum for an LTE and a new radio (NR).
6 . A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and
a controller coupled with the transceiver, and configured to:
transmit, to a base station, UE capability information for supporting a cell reference signal-interference mitigation (CRS-IM) associated with an assistance of a network signaling, wherein the UE capability information includes at least one of first information indicating that the UE supports a neighboring long term evolution (LTE) cell CRS-IM with the assistance of the network signaling or second information indicating that the UE supports the neighboring LTE cell CRS-IM without the assistance of the network signaling,
receive, from the base station, at least one configuration information on a LTE neighbor cell associated with a CRS, and
perform the CRS-IM based on the at least one configuration information on the LTE neighbor cell associated with the CRS,
wherein in case that the UE capability information includes the first information indicating that the UE supports a neighboring LTE cell CRS-IM with the assistance of the network signaling, the at least one configuration information on the LTE neighbor cell associated with the CRS includes information on a channel bandwidth.
7 . The UE of claim 6 ,
wherein the at least one configuration information on the LTE neighbor cell associated with the CRS further includes at least one of information on a downlink center frequency, information on a physical cell identifier (ID), information on a multicast broadcast single frequency network (MBSFN) subframe configuration, information on a CRS antenna ports number, or sixth information on a shifting value, and
wherein the at least one configuration information on the LTE neighbor cell is associated with an overlapping spectrum for an LTE and a new radio (NR).
8 . A base station in a wireless communication system, the base station comprising:
a transceiver; and
a controller coupled with the transceiver, and configured to:
receive, from a user equipment (UE) UE capability information for supporting a cell reference signal-interference mitigation (CRS-IM) associated with an assistance of a network signaling, wherein the UE capability information includes at least one of first information indicating that the UE supports a neighboring long term evolution (LTE) cell CRS-IM with the assistance of the network signaling or second information indicating that the UE supports the neighboring LTE cell CRS-IM without the assistance of the network signaling,
generate at least one configuration information on a LTE neighbor cell associated with a CRS, and
transmit, to the UE, the at least one configuration information on the LTE neighbor cell associated with the CRS,
wherein the CRS-IM is performed based on the at least one configuration information on the LTE neighbor cell associated with the CRS, and
wherein in case that the UE capability information includes the first information indicating that the UE supports a neighboring LTE cell CRS-IM with the assistance of the network signaling, the at least one configuration information on the LTE neighbor cell associated with the CRS includes information on a channel bandwidth.
9 . The base station of claim 8 ,
wherein the at least one configuration information on the LTE neighbor cell associated with the CRS further includes at least one of information on a downlink center frequency, information on a physical cell identifier (ID), information on a multicast broadcast single frequency network (MBSFN) subframe configuration, information on a CRS antenna ports number, or information on a shifting value, and
wherein the at least one configuration information on the LTE neighbor cell is associated with an overlapping spectrum for an LTE and a new radio (NR).
10 . The method of claim 1 ,
wherein the information on the channel bandwidth needs to be included in the at least one configuration information on the LTE neighbor cell associated with the CRS, in case that the UE supports a capability of the first information.
11 . The method of claim 4 ,
wherein the information on the channel bandwidth needs to be included in the at least one configuration information on the LTE neighbor cell associated with the CRS, in case that the UE supports a capability of the first information.
12 . The UE of claim 6 ,
wherein the information on the channel bandwidth needs to be included in the at least one configuration information on the LTE neighbor cell associated with the CRS, in case that the UE supports a capability of the first information.
13 . The base station of claim 8 ,
wherein the information on the channel bandwidth needs to be included in the at least one configuration information on the LTE neighbor cell associated with the CRS, in case that the UE supports a capability of the first information.