How to realize multi-link bandwidth utilization load

I have multiple links, namely China Mobile, China Unicom and China Telecom. Currently, I use the traditional outbound virtual server to go out through irules. According to the internal client request target address, the corresponding link is selected for the specific ISP to share. I have a requirement. Can it be realized according to a certain pool or member (specifically referring to the sharing limit threshold of a certain ISP link bandwidth utilization rate, such as China Telecom 100Mbps. When the threshold is exceeded, the new session traffic will no longer share the telecom member or according to the percentage utilization rate)?

The current version is 17. I have tried to use Acceleration ›› Bandwidth Controllers : Policies and then call the location Network ›› Packet Filters : Rules ›› New Packet Filter Rule. But this is global and has a certain impact on other parts. It requires limited policy adjustment. Is there a better way, including whether the irules method can use the BWC::measure measurement method to achieve it? If you can write it, please leave a message! Thank you!

Any message is very grateful! ! !