SDAP
From the point of view of the protocol structure show SDAP sub-layer; SDAP sub-layer is configured by RRC signaling, SDAP sublayer is responsible for will be mapped to the corresponding DRB QoS flow; One or multiple QoS flow can be mapped to the same DRB, a QoS flow can only be mapped to a DRB
QoS flow and the mapping relationship from RRC signaling in the DRB DRB configuration parameters obviously see




Weixin_39053008: how does gNB/UE know what a package belongs to the QoS Flow ID (QFI)? Pack up # 1/f) (3 months ago reply
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Cloudfly_cn reply weixin_39053008: packet filter inside can have detailed filter rules, such as packet filter in the filter conditions for: UL, UDP, port=5000, then the UE send an IP packet, if the IP packet for UDP UDP protocol, and the port is 5000, the IP packet and matching on the packet filter, the IP packet will be sent from the packet filter in QFI, (3 months ago) to report reply
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Cloudfly_cn weixin_39053008 reply: thank you very much for your reply, I also saw the QoS filtering rules, but I still don't quite understand when receiving a sdus from top (DL: UPF - & gt; GNB or UL: UE APP - & gt; UE SDAP), how do you know this package/sdus SDAP sending entity which QFI belongs to, and from this package type IP/UDP/GTP -u/IP made or Ethernet/... Which one of these in baotou of which one or which fields can deduce QFI? Which send to RAN gNB configuration or message containing the corresponding relationship? Thank you again! (3 months ago)
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Cloudfly_cn reply weixin_39053008: PDU reply to establish the UE and network selection and negotiate out a list of QoS rules, each QoS rules contains a packet filter list, UE and gNB send each packet, the rules of will and these QoS packet filter matching when the match, the packet to the QoS Flow ID,