METHODS AND NODES FOR ESTABLISHING A NEIGHBOUR RELATION IN A WIRELESS NETWORK
FIG7 is a block diagram illustrating a first network node, a second network node and a control node in more detail, according to further possible embodiments 
It should be noted that FIG7 illustrates various functional units in the control node 700, the first network node 702 and the second network node 704, respectively, and the skilled person is able to implement these functional units in practice using suitable software and hardware. Thus, the solution is generally not limited to the shown structures of the control node 700, the first network node 702 and the second network node 704, and the functional units 700A-C, 702A-D and 704A-D therein may be configured to operate according to any of the features and embodiments described in this disclosure, where appropriate.
block diagram
702
first network node
704
second network node
700
control node
['1. A method performed by a first network node (102) in a wireless network, for establishment of a neighbour relation with a second network node (104) in the wireless network, wherein the first network node (102) and the second network node (104) perform radio communication with wireless devices, the method comprising: - obtaining (200, 1:1), from a control node (100), a set of reference signals reserved for neighbour relation establishment, wherein the neighbour relation is a direct connection between network nodes, - receiving (204, 1:4), from a wireless device (D1) served by the first network node (102), a measurement report indicating at least one detected reference signal that is recognized by the first network node (102) as belonging to the set of reserved reference signals, - identifying (206, 1:5) the second network node (104) based on the at least one detected reserved reference signal indicated in the received measurement report, wherein identifying the second network node (104) comprises: i) sending an identification request to the control node (100) based on the at least one detected reference signal indicated in the received measurement report, and obtaining, from the control node (100), an identity of the second network node (104), or ii) identifying the second network node from an IP address or global identity of the second network node indicated in an allocation message received from the control node, after receiving the set of reference signals reserved for neighbour relation establishment, and wherein the allocation message indicates one or more reference signals allocated to the second network node from the set of reserved reference signals; and - establishing (208, 1:6) a neighbour relation with the second network node (104).']