Hi Claudio,
Yes you can migrate the SAP solman 7 to Solman 7.1 without any issues and dependecies on the Netweaver 7.0.
also when you complete the migration you have to take care of the Basis configuration/ Intial Confgiurations, also migrate saposcol to saphost agent and neeed SMDagents installed on satellite systems.
One more important thing is you need to migrate SMSY to LMDB and update the latest CR contents.
And do check for your charm/CTS+ configuration and Solman documentations.
Let us know if you need any other details from us.
Regards,
Ram