The rr.conf is where the cells (sectors) are added to the eNB, this is also where the handover flags are enabled. The second most significant unit is used to indicate which cell the port belongs to. By having the least significant unit of each Rx port be 0 and Tx port be 1 the flowgraphīecomes easier to debug. The use of a clear labelling system for the ports is employed to allow for easier implementation of the GRC broker. The following table should make clear how the TCP ports are allocated across the cells: Cell Ports Used ¶ The following example shows how this is done: In the eNB the RF Device and Args should be set so that ZMQ is used and two Tx/Rx TCP port pairings are created for the UL & DL of each cell. To enable the successful execution of intra-eNB handover the configuration files of the eNB, radio resources and the UE must be modified. Note, ZMQ elements have not been included here so as to simplify the diagram, although they do form a key aspect of this implementation. This set-up will allow intra-frequency intra-enb handover. The following figure shows the overall architecture used:

Show how ZMQ and GRC can be used with srsRAN to demonstrate such a handover. Intra-eNB Handover describes the handover between cells when a UE moves from one sector to another sector which are managed by the same eNB.

Your hardware and drivers should now be working correctly and be ready to use correctly with srsRAN.

Nelson intra 2100 manual