1. How to represent staging lanes (the places where AGVs will put or pick the pallets from) in SAP.
Explore the possibility of using the Id point / Pick point (Not sure about your warehouse layout but in my past implementation we used ID point and pick point. AGV or ASRS always perform operation at Pallet level so your Storage type should be SU managed)
2.How to control TO sending to asrs control system .
which system are you using (if you are using Dematic then they have the logic inbuilt which transmit the Transfer order after creation, this is based on RFC call and the logic ) refer the below link
3.How to track pallet status in Standard sap.
Probably i am not getting the big picture here where and what actually you want to track however if you talk about standard SAP then you can use the stock report transaction (LX02, LX03 , LS26) to check the status wher e in which storage type the pallet is