Large capacity tag concurrency problem

Hi everyone, I have a problem now.

In a long and narrow tunnel, I have up to 200 tags at the same time. They all need to ranging with anchor, there will be ranging failure. Do you have any good suggestions?

Your tag is to broadcast the poll message. Every anchor within its communication range can receive the poll message and return the response message. However, when the number of tags is large, the anchor receives the poll message of tag 2 before receiving the final message of tag 1, which will lead to ranging failure. When the number of tags is 200, the above scenarios will occur more frequently. How do you solve the ranging problem when the number of tags is large?