Adaptive 2-stage downlink control channel structure for 5G (5G) or other next-generation systems based on code block group

摘要

An adaptive two-stage downlink control channel structure is used for control channel transmission with code block group (CBG) retransmission for 5G and other next generation wireless systems. In one aspect, the first stage of the two-stage downlink control channel structure uses a defined format (eg, having a fixed length) and is used to determine the length and / or coding scheme of the second stage Provide possible information. In another aspect, the second stage of the 2-stage downlink control channel structure uses variable length / size to indicate CBGs scheduled to be retransmitted (eg, using a variable length bitmap). As an example, the length / size is changed based on the length / size of a transport block in which CBGs are generated.