Systems and methods for excluding relay nodes from multi-user multiple-input-multiple-output (MU-MIMO) pairing
View Patent ↗Systems and methods are described for selecting relay nodes for Single-User Multiple-Input-Multiple Output (SU-MIMO). A channel orthogonality and Signal-to-Interference-Plus-Noise Ratio (SINR) of a plurality of wireless devices located in a geographic area of an access node is determined. A relay-capable status of the plurality of wireless devices is determined. Non-relay capable wireless devices located in the geographic area are excluded from SU-MIMO. From the plurality of wireless devices, relay-capable wireless devices are selected for SU-MIMO. The selected relay-capable wireless devices are prioritized for SU-MIMO based on a channel orthogonality and SINR meeting a set threshold.
1. A method for enabling Multi-User Multiple-Input-Multiple-Output (MU-MIMO) pairing of wireless devices served by an access node, the method comprising:
determining a channel orthogonality and Signal-to-Interference-Plus-Noise Ratio (SINR) of a plurality of wireless devices located in a geographic area served by the access node;
excluding relay-capable wireless devices located in the geographic area from MU-MIMO pairing;
selecting, from the plurality of wireless devices, non-relay capable wireless devices for MU-MIMO pairing, wherein the selected non-relay capable wireless devices are prioritized for MU-MIMO pairing based on a channel orthogonality and SINR meeting a set threshold; and
selecting at least one relay node from the excluded relay-capable wireless devices for Single-User MIMO scheduling based on a reported Reference Signal Received Power (“RSRP”), Received Signal Strength Indicators (“RSSI”), and Radio Frequency (“RF”) parameter.
2. The method of claim 1 , wherein data packets are transmitted to the at least one relay node using a Modulation and Coding Scheme (“MCS”) based on a Channel Quality Indicator (“CQI”) reported by the at least one relay node.
3. The method of claim 2 , wherein data packets are scheduled to the at least one relay node based a load at the relay node and an application profile of end-users.
4. The method of claim 1 , wherein the at least one relay node is selected based on a loading condition.
5. The method of claim 4 , wherein the loading condition is based on a number of end-users connected to the at least one relay node.
6. A system for enabling Multi-User Multiple-Input-Multiple-Output (MU-MIMO) pairing of wireless devices served by an access node, the system comprising:
a processing node configured to:
determine a channel orthogonality and Signal-to-Interference-Plus-Noise Ratio (SINR) of a plurality of wireless devices located in a geographic area served by the access node;
exclude relay-capable wireless devices located in the geographic area from MU-MIMO pairing;
select, from the plurality of wireless devices, non-relay capable wireless devices for MU-MIMO pairing, wherein the selected non-relay capable wireless devices are prioritized for MU-MIMO pairing based on a channel orthogonality and SINR meeting a set threshold; and
select at least one relay node from the excluded relay-capable wireless devices for Single-User MIMO scheduling based on a reported Reference Signal Received Power (“RSRP”), Received Signal Strength Indicators (“RSSI”), and Radio Frequency (“RF”) parameter.
7. The system of claim 6 , wherein data packets are transmitted to the at least one relay node using a Modulation and Coding Scheme (“MCS”) based on a Channel Quality Indicator (“CQI”) reported by the at least one relay node.
8. The system of claim 7 , wherein data packets are scheduled to the at least one relay node based a load at the relay node and an application profile of end-users.
9. The system of claim 6 , wherein the at least one relay node is selected based on a loading condition.
10. The system of claim 9 , wherein the loading condition is based on a number of end-users connected to the at least one relay node.
11. A method for selecting relay nodes for Single-User Multiple-Input-Multiple-Output (SU-MIMO), the method comprising:
determining a channel orthogonality and Signal-to-Interference-Plus-Noise Ratio (SINR) of a plurality of wireless devices located in a geographic area of an access node;
determining a relay-capable status of the plurality of wireless devices;
excluding non-relay capable wireless devices located in the geographic area from SU-MIMO; and
selecting, from the plurality of wireless devices, relay-capable wireless devices for SU-MIMO, wherein the selected relay-capable wireless devices are prioritized for SU-MIMO based on a channel orthogonality and SINR meeting a set threshold and wherein selecting the relay-capable wireless devices for SU-MIMO is based on a reported Reference Signal Received Power (“RSRP”), Received Signal Strength Indicators (“RSSI”), and Radio Frequency (“RF”) parameter.