US 12,232,206 B2
Low-latency communication with discontinuous transmission
Faranaz Sabouri-Sichani, Aalborg (DK); Nuno Manuel Kiilerich Pratas, Gistrup (DK); Lianghai Ji, Aalborg (DK); Berthold Panzner, Holzkirchen (DE); Ranganathan Mavureddi Dhanasekaran, Munich (DE); Panagiotis Spapis, Munich (DE); and Daniel Medina, Munich (DE)
Assigned to NOKIA TECHNOLOGIES OY, Espoo (FI)
Filed by Nokia Technologies Oy, Espoo (FI)
Filed on Mar. 31, 2022, as Appl. No. 17/709,717.
Claims priority of application No. 20215380 (FI), filed on Mar. 31, 2021.
Prior Publication US 2022/0322487 A1, Oct. 6, 2022
Int. Cl. H04W 76/28 (2018.01); H04W 72/20 (2023.01)
CPC H04W 76/28 (2018.02) [H04W 72/20 (2023.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus in a communication system comprising at least one processor; and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the apparatus to:
obtain one or more link identifiers used by a first terminal device;
obtain information of communication of another terminal device with the first terminal device based on the obtained one or more link identifiers;
determine, based on the obtained information, that the first terminal device is active for communication; and
transmit to the first terminal device based on the determination; and
determine that the first terminal device is active for sidelink reception based on detecting a communication between another terminal device and the first terminal device by monitoring the communication and detecting a determined link identifier used by the first terminal device in at least one sidelink control information and data payload of the communication;
wherein the first terminal device and the another terminal device exchange other DRX configurations they have for other cast-types, the cast-types including unicast, groupcast and broadcast,
wherein at least one of the other DRX configurations is the minimal value of DRX InactivityTimer,
wherein the other DRX configurations are associated to the identifiers exchanged to a designated peer terminal device,
wherein for each cast-type one terminal device may send the minimal value of DRX InactivityTimer associated to the different link identifiers to the peer terminal in order to reduce the signalling,
wherein when the DRX configuration of some services is provided by the network and/or pre-configuration to both the first terminal device and the another terminal device, the another terminal device is aware of at least some of the DRX configurations at the first terminal device for the corresponding services, the at least some of the DRX configurations including a value of DRX-Inactivity Timer, a value of DRX-onDurationTimer, and a SlotOffset, without being indicated by the first terminal device.