Intercell coordination for interference estimation and nulling
AssigneeQUALCOMM Incorporated
InventorsChih-Hao LIU, Rajat PRAKASH, Jing SUN
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Abstract
A method for wireless communication at a first network entity and related apparatus are provided. In the method, the first network entity receives an inter-cell interference coordination (ICIC) message from a second network entity over an Xn interface between the second network entity and the first network entity. The ICIC message includes at least one of a set of start and length indicator value (SLIV) patterns or a bitmap for uplink or downlink transmissions of the second network entity with a user equipment (UE). The first network entity further performs an interference reduction process based on the ICIC message within a first ICIC period.
Claims30
An apparatus for wireless communication at a first network entity, comprising:
- at least one memory;
- and
- at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor is configured to:
- receive, from a second network entity over an Xn interface between the second network entity and the first network entity, an inter-cell interference coordination (ICIC) message, wherein the ICIC message includes at least one of a set of start and length indicator value (SLIV) patterns or a bitmap for uplink or downlink transmissions of the second network entity with a user equipment (UE);
- and
- perform an interference reduction process based on the ICIC message within a first ICIC period.
An apparatus for wireless communication at a serving network entity, comprising:
- at least one memory;
- and
- at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor is configured to:
- transmit, to a neighbor network entity over an Xn interface between the serving network entity and the neighbor network entity, an inter-cell interference coordination (ICIC) message, wherein the ICIC message includes at least one of a set of start and length indicator value (SLIV) patterns or a bitmap for uplink or downlink transmissions of the serving network entity with a user equipment (UE);
- and
- communicate with the UE based on the ICIC message within a first ICIC period.
An apparatus for wireless communication at a first network entity, comprising:
- at least one memory;
- and
- at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor is configured to:
- obtain a first common reference signal (RS) pattern for a slot for a first inter-cell interference coordination (ICIC) period, wherein the first common RS pattern includes a frequency domain (FD) pattern or a time domain (TD) pattern;
- communicate, with a user equipment (UE), a sequence of RSs based on the first common RS pattern;
- and
- perform an interference reduction process based on the sequence of RSs during the first ICIC period.
A method of wireless communication at a first network entity, comprising:
- receiving, from a second network entity over an Xn interface between the second network entity and the first network entity, an inter-cell interference coordination (ICIC) message, wherein the ICIC message includes at least one of a set of start and length indicator value (SLIV) patterns or a bitmap for uplink or downlink transmissions of the second network entity with a user equipment (UE);
- and
- performing an interference reduction process based on the ICIC message within a first ICIC period.
Dependencies are inferred from the claim text.