Connectivity issue about the screen mirroring

My Z2 phone can not connect to sink device with the screen mirroing.
I try to analayze this issue by the wireshark application.
My analysis result is as below.
The operating channel of GO Negociation Confirmation is set to 36ch or 44ch when Z2 phone is P2P GO.
In case of 36ch,  P2P sequence proceeds normally.
In case of 44ch,  P2P sequence does not proceed, because Beacom frame is not transmitted from Z2 phone.
Does Z2 phone have the usage restriction of 5GHz band with P2P GO ?
[Device Information]
Model number : D6503
Processor info : Qualcomm MSM8974PRO-AB
Android version : 4.4.4
Baseband version : 8974-AAAAANPZQ-00027-23
Kernel version : 3.4.0-perf-gd4d661a BuildUser@BuildHost #1 Fri Sep 19 18:10:07 2014
Build number : 23.0.1.A.3.12

Thanks for testing and glad to hear that it's working now with your Z3.
We have looked into this more and also see that you have selected Japan as country in your accont. If you are located in Japan the cause of this issue was due to regulatory issues and channel selection. There's been an update for this in the update to Android 5.0 so that wrong channel is not selected which is why you're not seeing the issue after the update.
We have also started rolling our the update for Z2 but i'm afraid i can't see when the update will reach Japan. We are currently rolling out the update for the nordics and baltics.
 - Official Sony Xperia Support Staff
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