| 摘要 |
Embodiments herein relate to a method performed in a radio access node (12) for allocating resources of one or more physical downlink control channels for transmission of control information to one or more wireless devices in a wireless communication network (1). The radio access node (12) maps the control information to a sequence of enhanced Control Channel Elements, ECCEs, of the one or more physical downlink control channels in a set of Physical Resource Block, PRB, pairs comprising a number of PRB pairs, wherein each enhanced Control Channel Element, ECCE, in said sequence of ECCEs corresponds to a respective set of enhanced Radio Element Groups, EREGs. The radio access node maps each enhanced Radio Element Group, EREG, in the respective set of EREGs of each ECCE in said sequence of ECCEs to the set of PRB pairs according to a function that distributes each EREG of each ECCE in said sequence of ECCEs among the PRB pairs comprised in the set of PRB pairs to a unique EREG position within the set of PRB pairs, wherein the function distributes the EREGs of two consecutive ECCEs such that an unequal distribution of the EREGs of the two consecutive ECCEs among the PRB pairs comprised in the set of PRB pairs is obtained. |
