Addition thresholds for wireless access nodes based on insertion loss
A primary access node adds a secondary access node to deliver wireless communication service to a User Equipment (UE). The primary access node comprises baseband circuitry and a radio. The radio wirelessly receives a measurement report from the UE that characterizes a radio metric for the secondary access node. The baseband circuitry determines insertion loss for the secondary access node and an add threshold for the secondary access node based on the insertion loss. The baseband circuitry determines an add value for the secondary access node based on the radio metric. When the add value exceeds the add threshold, the baseband circuitry transfers network signaling to the secondary access node to serve the UE and transfers user signaling to the UE over the radio. The UE attaches to the secondary access node and the secondary access node delivers the wireless communication service to the UE.
1. A method for operating a primary access node to add a secondary access node to deliver wireless communication service to a User Equipment (UE), the method comprising:
a radio wirelessly receiving a measurement report from the UE that characterizes a radio metric for the secondary access node and transferring the measurement report to a baseband circuitry;
the baseband circuitry determining an insertion loss for the secondary access node, determining an add threshold for the secondary access node based on the insertion loss, receiving and processing the measurement report and responsively determining an add value for the secondary access node based on the radio metric in the measurement report, and determining when the add value exceeds the add threshold;
when the add value exceeds the add threshold, the baseband circuitry transferring network signaling to the secondary access node to serve the UE and transferring user signaling to the radio;
the radio wirelessly transferring the user signaling to the UE to attach to the secondary access node, wherein the UE attaches to the secondary access node responsive to the user signaling and the secondary access node delivers the wireless communication service to the UE responsive to the network signaling.
2. The method of claim 1 further comprising the baseband circuitry determining a front radio lobe power for the secondary access node, determining a back radio lobe power for the secondary access node, determining a radio lobe power ratio for the secondary access node, and determining the add threshold based on the radio lobe power ratio.
3. The method of claim 1 further comprising the baseband circuitry determining a radio port isolation loss for the secondary access node and determining the add threshold based on the radio port isolation loss.
4. The method of claim 1 further comprising the baseband circuitry determining an antenna gain for the secondary access node and determining the add threshold based on the antenna gain.
5. The method of claim 1 wherein the baseband circuitry determining the insertion loss, determining the add threshold based on the insertion loss, determining the add value, determining when the add value exceeds the add threshold, and transferring the network signaling to the secondary access node comprises the baseband circuitry executing a Long Term Evolution (LTE) Radio Resource Control (RRC) and the LTE RRC determining the insertion loss, determining the add threshold based on the insertion loss, determining the add value, determining when the add value exceeds the add threshold, and transferring the network signaling to the secondary access node.
6. The method of claim 1 wherein the baseband circuitry determining the insertion loss, determining the add threshold based on the insertion loss, determining the add value, determining when the add value exceeds the add threshold, and transferring the network signaling to the secondary access node comprise the baseband circuitry executing a Fifth Generation New Radio (5GNR) Radio Resource Control (RRC) and the 5GNR RRC determining the insertion loss, determining the add threshold based on the insertion loss, determining the add value, determining when the add value exceeds the add threshold, and transferring the network signaling to the secondary access node.
7. The method of claim 1 wherein the baseband circuitry determining the add threshold comprises the baseband circuitry determining a B1 addition threshold.
8. The method of claim 1 wherein the baseband circuitry determining the add threshold comprises the baseband circuitry determining a 5GNR inter Radio Access Technology (inter-RAT) addition threshold.
9. The method of claim 1 wherein the primary access node comprises an LTE eNodeB and the secondary access node comprises a 5GNR gNodeB.
10. The method of claim 1 wherein the primary access node comprises a 5GNR gNodeB and the secondary access node comprises a Fifth Generation Millimeter Waver (5G MMW) access node.
11. A primary access node configured to add a secondary access node to deliver wireless communication service to a User Equipment (UE), the primary access node comprising:
a radio configured to wirelessly receive a measurement report from the UE that characterizes a radio metric for the secondary access node and transfer the measurement report to a baseband circuitry;
the baseband circuitry configured to determine an insertion loss for the secondary access node, determine an add threshold for the secondary access node based on the insertion loss, receive and process the measurement report and responsively determine an add value for the secondary access node based on the radio metric in the measurement report, and determine when the add value exceeds the add threshold;
when the add value exceeds the add threshold, the baseband circuitry configured to transfer network signaling to the secondary access node to serve the UE and transfer user signaling to the radio;
the radio configured to wirelessly transfer the user signaling to the UE to attach to the secondary access node, wherein the UE attaches to the secondary access node responsive to the user signaling and the secondary access node delivers the wireless communication service to the UE responsive to the network signaling.
12. The primary access node of claim 11 further comprising the baseband circuitry configured to determine a front radio lobe power for the secondary access node, determine a back radio lobe power for the secondary access node, determine a radio lobe power ratio for the secondary access node, and determine the add threshold based on the radio lobe power ratio.
13. The primary access node of claim 11 further comprising the baseband circuitry configured to determine a radio port isolation loss for the secondary access node and determine the add threshold based on the radio port isolation loss.
14. The primary access node of claim 11 further comprising the baseband circuitry configured to determine an antenna gain for the secondary access node and determine the add threshold based on the antenna gain.
15. The primary access node of claim 11 wherein the baseband circuitry configured to determine the insertion loss, determine the add threshold based on the insertion loss, receive and process the measurement report, determine the add value, determine when the add value exceeds the add threshold, and transfer the network signaling to the secondary access node comprises the baseband circuitry configured to execute a Long Term Evolution (LTE) Radio Resource Control (RRC) and the LTE RRC configured to determine the insertion loss, determine the add threshold based on the insertion loss, receive and process the measurement report, determine the add value, determine when the add value exceeds the add threshold, and transfer the network signaling to the secondary access node.
16. The primary access node of claim 11 wherein the baseband circuitry configured to determine the insertion loss, determine the add threshold based on the insertion loss, receive and process the measurement report, determine the add value, determine when the add value exceeds the add threshold, and transfer the network signaling to the secondary access node comprises the baseband circuitry configured to execute a Fifth Generation New Radio (5GNR) Radio Resource Control (RRC) and the 5GNR RRC configured to determine the insertion loss, determine the add threshold based on the insertion loss, receive and process the measurement report, determine the add value, determine when the add value exceeds the add threshold, and transfer the network signaling to the secondary access node.
17. The primary access node of claim 11 wherein the baseband circuitry configured to determine the add threshold comprises the baseband circuitry configured to determine a B1 addition threshold.
18. The primary access node of claim 11 wherein the baseband circuitry configured to determine the add threshold comprises the baseband circuitry configured to determine a 5GNR inter Radio Access Technology (inter-RAT) addition threshold.
19. The primary access node of claim 11 wherein the primary access node comprises an LTE eNodeB and the secondary access node comprises a 5GNR gNodeB.
20. The primary access node of claim 11 wherein the primary access node comprises a 5GNR gNodeB and the secondary access node comprises a Fifth Generation Millimeter Wave (5G MMW) access node.