Mechanism to measure, report, and allocate a highest possible rank for each cell in a carrier aggregation (CA) mode receiver-limited user equipment (UE)
AssigneeQUALCOMM Incorporated
InventorsAbhinav Dayal, Manjinder Singh Sandhu, Madhusudan Kinthada Venkata
Life of this patent
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Abstract
Certain aspects of the claimed invention generally relate to a network dynamically configuring one or more cells based on signal quality measurements received from all antennas of a receiver-limited UE. The receiver-limited UE may have a number of receivers that is less than or equal to a number of antennas of the UE. Further, the UE may be capable of operating in a CA mode. Dynamically configuring the one or more cells based, at least in part, on the received signal quality measurements may allow the UE to operate on M×N MIMO on the Pcell or Scell.
Claims20
A method for wireless communication, comprising:
- receiving signal quality measurements from all antennas of a receiver-limited user equipment (UE) capable of operating in a carrier aggregation (CA) mode, wherein a number of receivers of the UE is less than or equal to a number of antennas of the UE;
- and
- dynamically configuring at least one of a primary cell (Pcell) or a secondary cell (Scell) of the UE, based at least in part, on the received signal quality measurements, wherein the UE is a Category 5 or higher UE and reports a maximum 2×2 multiple-input multiple-output (MIMO) support for each CA band combination.
A method for determining a rank for a primary cell (Pcell) and a secondary cell (Scell) in a wireless communication network, the method comprising:
- sampling, in a first time interval, a reference signal in the Pcell using a first antenna set and sampling a reference signal in the Scell using a second antenna set;
- repeating the sampling step in a second time interval;
- combining the sampled reference signals from the first and second time intervals to determine a rank for the Pcell and the Scell, respectively;
- and
- reporting the determined rank of the Pcell and the Scell to the network.
An apparatus for wireless communication, comprising:
- means for receiving signal quality measurements from all antennas of a receiver-limited user equipment (UE) capable of operating in a carrier aggregation (CA) mode, wherein a number of receivers of the UE is less than or equal to a number of antennas of the UE;
- and
- means for dynamically configuring at least one of a primary cell (Pcell) or a secondary cell (Scell) of the UE, based at least in part, on the received signal quality measurements wherein the UE is a Category 5 or higher UE and reports a maximum 2×2 multiple-input multiple-output (MIMO) support for each CA band combination.
An apparatus for determining a rank for a primary cell (Pcell) and a secondary cell (Scell) in a wireless communication network, the apparatus comprising:
- means for sampling, in a first time interval, a reference signal in the Pcell using a first antenna set and sampling a reference signal in the Scell using a second antenna set;
- means for repeating the sampling step in a second time interval;
- means for combining the sampled reference signals from the first and second time intervals to determine a rank for the Pcell and the Scell, respectively;
- and
- means for reporting the determined rank of the Pcell and the Scell to the network.
Dependencies are inferred from the claim text.