US 11,963,167 B2 · Method and network nodes for enabling downlink scheduling for a SPS and DRX configured UE

Abstract

A method in a User Equipment (UE) configured with Discontinuous Reception (DRX) and a method in a network node for Downlink (DL) scheduling of the UE. The UE is further configured with Semi Persistent Scheduling (SPS) which reduces the latency in Uplink (UL) transmission. The network node monitors a receipt of UL data in any of the SPS resources granted to the UE, a Wake-up grant or assignment is sent on the Physical Downlink Control Channel (PDCCH), and a HARQ-information is sent in response to the received UL data. The Wake-up grant/assignment triggers a drx-Inactivity timer to run in the UE. While the UE is DRX active, the network node may schedule a DL data transmission and send a DL assignment and the DL data to the UE.

Claims15

Dependent claims

A method in a network node for enabling scheduling of a User Equipment (UE) configured with Discontinuous reception (DRX) and semipersistent scheduling (SPS), said method comprising:

receiving an Uplink (UL) transmission from the UE in recurring Transmission Time Intervals (TTIs), short TTIs, slots, or sub-slots of the SPS;
and
transmitting a HARQ response to the UL transmission and, within a same occasion, transmitting an UL grant or a Downlink (DL) assignment to the UE, provided there is no upcoming preconfigured DRX On-Duration period within a specified time limit, wherein the UL grant or the DL assignment, when transmitted, triggers the UE to stay in DRX active mode for a period.

Dependencies are inferred from the claim text.

Method and network nodes for enabling downlink scheduling for a SPS and DRX configured UE

Life of this patent

Method and network nodes for enabling downlink scheduling for a SPS and DRX configured UE

Life of this patent

Abstract

Claims15