Systems and methods for improving cell-edge receiver performance
Systems and methods for providing improved cell-edge antenna performance are disclosed. The system can use various signal quality indicators (SQIs) for each user equipment (UE) on a particular wireless base station (WBS) or network. When one or more of these metrics reaches a first predetermined value for a particular UE, the WBS or the UE can decide to activate a diversity receive (Rx) antenna on the UE to improve reception. If one or more of these metrics continues to degrade to a second predetermined value, however, the WBS or the UE can deactivate the diversity Rx antenna and activate a primary Rx antenna. Deactivating the diversity antenna when signal quality/strength is poor can improve reception by reducing interference between the diversity Rx antennas. Disabling the diversity Rx antenna when signal quality/strength is poor can also decrease the number of retransmission requests from each UE, reducing traffic on the WBS.
1. A network entity associated with a network provider comprising:
a transceiver to send and receive at least one of wired or wireless transmissions;
memory storing computer-executable instructions including a network radio resource management (NRRM) application; and
a processor in communication with at least the transceiver and the memory, the computer-executable instructions causing the processor to perform acts comprising:
receiving, with the transceiver, a first signal from a user equipment (UE), the first signal including a first radio resource control (RRC) message;
determining, with the NRRM application, based at least in part on a first value of a first signal quality indicator (SQI) in the first RRC message to activate a diversity receive (Rx) mode on an antenna on the UE;
sending, with the transceiver, a second signal to the UE, the second signal causing the UE to activate the diversity Rx mode of the antenna;
receiving, with the transceiver, a third signal from the UE, the third signal including a second RRC message;
determining, with the NRRM application, based at least in part on a second value of a second SQI in the second RRC message to deactivate the diversity Rx mode on the antenna; and
sending, with the transceiver, a fourth signal to the UE to cause the UE to deactivate the diversity Rx mode of the antenna and activate a main Rx mode of the antenna.
2. The network entity of claim 1 , wherein:
the first SQI and the second SQI comprise a signal-to-interference noise ratio (SINR);
the first value comprises an SINR that is greater than 0 dB and less than 12 dB; and
the second value comprises an SINR less than or equal to 0 dB.
3. The network entity of claim 1 wherein:
the first SQI comprises a rank indicator (RI);
the first value is equal to 1;
the second SQI comprises a signal-to-interference noise ratio (SINR); and
the second value comprises an SINR less than or equal to 0 dB.
4. The network entity of claim 1 , the computer-executable instructions causing the processor to perform acts comprising:
receiving, with the transceiver, a fifth signal from the UE, the fifth signal including a third RRC message;
determining, with the NRRM application, based at least in part on a third value of a third SQI in the third RRC message to activate a multiple-in-multiple-out (MIMO) Rx mode on the antenna; and
sending, with the transceiver, a sixth signal to the UE, the sixth signal causing the UE to activate the MIMO Rx mode on the antenna.
5. The network entity of claim 4 , wherein:
the third SQI comprises a rank indicator (RI); and
the third value comprises an RI equal to 2.
6. The network entity of claim 4 , wherein:
the third SQI comprises a signal-to-interference noise ratio (SINR); and
the third value comprises an SINR greater than or equal to 12 dB.
7. A user equipment (UE) comprising:
a transceiver to send and receive at least one of wired or wireless transmissions;
an antenna in communication with the transceiver comprising at least a main receive (Rx) mode, a diversity Rx mode, and a multiple-in-multiple-out (MIMO) mode;
memory storing computer-executable instructions including at least a radio resource management (RRM) application; and
a processor in communication with at least the transceiver and the memory, the computer-executable instructions causing the processor to perform acts comprising:
receiving, at the RRM application, a first signal from the transceiver, the first signal comprising a first value for a first signal quality indicator (SQI), the first SQI associated with a first signal quality at the antenna;
determining, with the RRM application, based at least in part on the first value, to activate the diversity Rx mode on the antenna;
sending, with the RRM application, a second signal to the antenna to activate the diversity Rx mode on the antenna;
receiving, at the RRM application, a third signal from the transceiver, the third signal comprising a second value for a second SQI, the second SQI associated with a second signal quality at the antenna;
determining, with the RRM application, based at least in part on the second value to deactivate the diversity Rx mode on the antenna and activate the main Rx mode on the antenna;
sending, with the RRM application, a fourth signal to the antenna to cause the antenna to deactivate the diversity Rx mode on the antenna and activate the main Rx mode on the antenna;
receiving, at the RRM application, a fifth signal from the transceiver, the fifth signal including a third value for a third SQL the third SQI associated with a third signal quality at the antenna;
determining, with the RRM application, based at least in part on the third value to reactivate the diversity Rx mode on the antenna or activate the MIMO Rx mode on the antenna; and
sending, with the RRM application, a sixth signal to the antenna to activate the diversity Rx mode on the antenna or activate the MIMO Rx mode on the antenna.
8. The UE of claim 7 , wherein:
the first SQI and the second SQI comprise a signal-to-interference noise ratio (SINR);
the first value comprises an SINR that is greater than 0 dB and less than 12 dB; and
the second value comprises an SINR that is greater than −6 dB and less than or equal to 0 dB.
9. The UE of claim 7 , wherein:
the third SQI comprises a signal-to-interference noise ratio (SINR); and
the third value comprises an SINR between −6 dB and 6 dB.
10. The UE of claim 7 , wherein:
the third SQI comprises a rank indicator (RI); and
the third value comprises an RI equal to 2.
11. The UE of claim 7 , wherein:
the third SQI comprises a signal-to-interference noise ratio (SINR); and
the third value comprises an SINR greater than or equal to 12 dB.
12. A method comprising:
receiving, with a transceiver of a network entity, a first signal from a user equipment (UE), the first signal including a first radio resource control (RRC) message;
determining, with a network radio resource management (NRRM) application on the network entity, based at least in part on a first value of a first signal quality indicator (SQI) in the RRC message to activate a diversity receive (Rx) mode on an antenna of the UE;
sending, with the transceiver, a second signal to the UE, the second signal to cause the UE to activate the diversity Rx mode on the antenna;
receiving, with the transceiver, a third signal from the UE, the third signal including a second RRC message; and
determining, with the NRRM application, based at least in part on a second value of a second SQI in the RRC message that the diversity Rx mode on the antenna is to be deactivated.
13. The method of claim 12 , further comprising:
sending, with the transceiver, a fourth signal to the UE to cause the UE to deactivate the diversity Rx mode on the antenna and activate a main Rx mode on the antenna.
14. The method of claim 12 , wherein:
the second SQI comprises a block error rate (BLER); and
the second value comprises a BLER greater than 6%.
15. The method of claim 12 , wherein:
the second SQI comprises a scheduling rate (SR); and
the second value comprises an SR greater than 35%.
16. The method of claim 12 , further comprising:
setting, with a processor of the network entity, a timer in response to determining that the diversity Rx mode on the antenna is to be deactivated;
receiving, with the transceiver and in response to the timer expiring, a fourth signal from the UE, the fourth signal including a third RRC message;
determining, with the NRRM application, based at least in part on the second value of the second SQI and a third value of a third SQI that the diversity Rx mode on the antenna is to be deactivated; and
sending, with the transceiver, a fifth signal to the UE to cause the UE to deactivate the diversity Rx mode on the antenna and activate a main Rx mode on the antenna.
17. The method of claim 12 , further comprising:
setting a timer in response to determining that the diversity Rx mode on the antenna is to be deactivated;
receiving, with the transceiver and in response to the timer expiring, a fourth signal from the UE, the fourth signal including a third RRC message; and
determining, with the NRRM application, based at least in part on a third value of a third SQI that the diversity Rx mode on the antenna is not to be deactivated.
18. The method of claim 17 , wherein:
the second SQI and the third SQI comprise a BLER;
the second value is greater than 6% BLER; and
the third value is less than or equal to 6% BLER.