Method and Node Supporting Cell Reselection in Load Balanced Network

A method, in a radio network node of a radio communications system operating on multiple carrier frequencies, for constraining cell reselection of a user equipment to intra-frequency cell reselection, wherein the radio network node hosts a first cell operating on a first carrier frequency and a second cell overlapping with the first cell and operating on a second carrier frequency, the method comprising:

• broadcasting information comprising a cell reselection priority for each of the first and the second carrier frequencies in the first cell, wherein the cell reselection priority of the first carrier frequency is configured to be higher than the cell reselection priority of the second carrier frequency;
• broadcasting information comprising a cell reselection priority for each of the first and the second carrier frequencies in the second cell, wherein the cell reselection priority of the second carrier frequency is configured to be higher than the cell reselection priority of the first carrier frequency;
• such that at least one user equipment camping on the first or the second cell will primarily perform intra-frequency cell reselection based on the broadcasted information.

A radio network node, of a radio communications system operating on multiple carrier frequencies, adapted to constrain cell reselection of a user equipment to intra-frequency cell reselection, wherein the radio network node is adapted to host a first cell operating on a first carrier frequency and a second cell overlapping with the first cell and operating on a second carrier frequency, the radio network node comprising:

• a first transmitter configured to broadcast information comprising a cell reselection priority for each of the first and the second carrier frequencies in the first cell, wherein the cell reselection priority of the first carrier frequency is configured to be higher than the cell reselection priority of the second carrier frequency;
• a second transmitter configured to broadcast information comprising a cell reselection priority for each of the first and the second carrier frequencies in the second cell, wherein the cell reselection priority of the second carrier frequency is configured to be higher than the cell reselection priority of the first carrier frequency;
• such that at least one user equipment camping on the first or the second cell will primarily perform intra-frequency cell reselection based on the broadcasted information.