Method and network node of wireless communication network for handling random access

A network node configured to operate in a wireless communication network, the network node having a plurality of receivers, the network node comprising a processing circuitry and a memory, said memory containing instructions executable by said processing circuitry, whereby the network node is operative to:

• receive, from a wireless device, a random access preamble when a first number of the plurality of receivers are active and a second number of the plurality of receivers are inactive;
• send, to the wireless device, a random access response, in response to the received random access preamble;
• determine whether a reception requirement for a subsequent random access procedure message sent by the wireless device towards the network node is fulfilled, the subsequent random access procedure message being sent by the wireless device subsequent to the network node sending the random access response, the reception requirement being either whether the random access procedure message is received at the network node or whether the random access procedure message that is received has a sufficient quality, and,
• when the reception requirement is determined not fulfilled, activate at least some of the inactive second number of receivers.