PERFORMING MOBILITY LOAD BALANCING AND MOBILITY ROBUSTNESS OPTIMIZATION BETWEEN ACCESS NODES FOR ONLY A SUBSET OF USER EQUIPMENT

Disclosed are methods, apparatus and computer programs to accomplish mobility load balancing and mobility robustness optimization. In an example of a method there are steps performed of, at a first network access node, partitioning a plurality of user equipment that are served by a cell of the network access node into at least two groups based on at least one partitioning criterion; sending a message to a second network access node having a neighboring cell, the message including group indicator information for identifying those user equipment that are in one of the groups; and performing mobility load balancing (MLB) procedures between the first and second network access nodes considering only those user equipment identified by the group indicator information.