Method for detecting downlink control channel, method for indicating downlink control channel, terminal and network side device

A method for indicating a downlink control channel, applied to a network side device and comprising:

• sending, through a first downlink control channel, physical layer indication information to a terminal, to indicate resource location information of the second downlink control channel carrying control information to the terminal;
• sending the control information through the second downlink control channel corresponding to the physical layer indication information;
• wherein the sending, through the first downlink control channel, the physical layer indication information to the terminal comprises:
• sending a high-layer control signaling to the terminal, to indicate a transmission period and an offset of the physical layer indication information to the terminal;
• and
• sending the physical layer indication information to the terminal, through a control channel corresponding to a subframe number meeting a relationship between the transmission period and the offset;
• wherein the subframe number is determined according to a formula idx mod T=offset, idx is the subframe number of the downlink control channel carrying the physical layer indication information, T is a transmission period of the indication information, and offset is the offset to send the indication information.

A terminal, comprising:

• a memory, a processor and a computer program stored in the memory and operable on the processor, wherein the processor executes the computer program to:
• detect, in a first downlink control channel, physical layer indication information sent by a network side device;
• determine, according to the physical layer indication information, resource location information of a second downlink control channel carrying control information;
• and
• detect the control information in the second downlink control channel according to the resource location information;
• wherein the processor executes the computer program to:
• acquire a high-layer control signaling sent by the network side device;
• determine, according to the high-layer control signaling, a transmission period and an offset of the physical layer indication information;
• determine, according to the transmission period and the offset, a subframe number of the downlink control channel carrying the physical layer indication information;
• and
• detect the physical layer indication information sent by the network side device, in the downlink control channel corresponding to the subframe number;
• wherein the processor executes the computer program to:
• according to a formula idx mod T=offset, determine the subframe number of the downlink control channel carrying the physical layer indication information, wherein idx is the subframe number of the downlink control channel carrying the physical layer indication information, T is a transmission period of the indication information, and offset is the offset to send the indication information.