Method and apparatus for supporting dual connectivity in NR
摘要
說明書
The aforementioned operation may be configured by a network when the DC is configured. If the UL carrier of LTE and the UL carrier of NR are shared, an operation for processing different RAT payloads may be necessary. In addition, a specific mechanism may be configured by a higher layer, and the UE may perform different operations according to configurations. In addition, HARQ-ACK may be piggybacked on transmission of a different CG. The piggyback may be based on an RAT type of the different CG.
(3) Data Transmission Including Semi-Persistent Scheduling (SPS)
For data scheduling, real-time or semi-static adjustment may be required between CGs. Accordingly, data transmission may be multiplexed in a TDM manner. To minimize the adjustment, a payload of each CG may be encapsulated by being aggregated as if it is single UL transmission. An RAT type of the payload combined in this manner may be defined as follows.
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- It may always be based on an RAT type of MCG.
- It may be based on an RAT type of a first CG for an allocated UL resource, based on the semi-static UL resource split. In the absence of the first CG allocated to the UL resource, it may be based on the RAT type of MCG.
- It may always be based on an RAT type of NR.
- It may be based on an RAT type of SRS. That is, data transmission may be based on LTE if a current UL resource is used for transmission of SRS of LTE, and data transmission may be based on NR if the current UL resource is used for transmission of SRS of NR.
