Method, device and system for transmitting downlink control channel

摘要

The present invention discloses a downlink control channel transmission method, characterized by comprising: user equipment (UE) receives a first downlink control information (DCI) and a second DCI, wherein, the first DCI and the second DCI are used for jointly indicating scheduling information carried by a downlink control channel; the UE determines the first DCI as a primary DCI and the second DCI as a secondary DCI; and the UE acquires the scheduling information carried by the downlink control channel according to the primary DCI and the secondary DCI. Also disclosed in the present invention are a communication device and a system. According to the solution provided by the present invention, the transmission of the downlink control channel corresponding to an extended resource is indicated, and the backward compatibility of the control channel is ensured.

主权项

1. A method for transmitting a downlink control channel, comprising:
receiving, by a user equipment (UE), first downlink control information (DCI) and second DCI, wherein, the first DCI and the second DCI are used for jointly indicating scheduling information of an extended resource carried by the downlink control channel, wherein the first DCI corresponds to a standard resource, and wherein the extended resource is bigger than the standard resource and includes the standard resource;
determining, by the UE, that the first DCI is a primary DCI and that the second DCI is a secondary DCI;determining, by the UE, a new DCI according to the primary DCI and the secondary DCI; and acquiring the scheduling information carried by the downlink control channel according to the new DCI,
wherein the first DCI comprises resource indication information;wherein the second DCI comprises extension information;wherein the extension information is used for extending the resource indication information in the first DCI, andwherein the determining, by the UE, a new DCI according to the primary DCI and the secondary DCI and acquiring the scheduling information carried by the downlink control channel according to the new DCI comprises:acquiring the new DCI according to the extension information in the secondary DCI and the resource indication information in the primary DCI, wherein the new DCI comprises extended resource indication information obtained by extending the resource indication information in the primary DCI according to the extension information in the secondary DCI; andacquiring the scheduling information carried by the downlink control channel according to the extended resource indication information.