Monitoring instructing and monitoring method and apparatus with short transmission time interval

A method for listening in a short TTI, the method comprising:

• receiving at a UE side an instruction instructing whether or not to listen to a downlink control channel in a short TTI;
• and
• listening to a downlink control channel in a short TTI, in response to the instruction instructing to listen to a downlink control channel in a short TTI;
• wherein receiving at a UE side an instruction comprises:
• receiving the instruction instructing whether or not to listen to a downlink control channel in a short TTI, in a DCI transmitted in a legacy control region, or
• a dedicated instructing channel, or an MAC CE;
• or deciding by the UE whether to listen to a downlink control channel in a short TTI, according to whether DCI of a short TTI is received in the legacy control region;
• wherein the instruction instructing whether or not to listen to a downlink control channel in a short TTI is received from instructed information carried in an ON/OFF information field;
• or
• the UE is instructed to or not to listen to a downlink control channel in a short TTI, by instructing a quantity of short TTIs and/or sequence numbers of short TTIs.

An apparatus for instructing a listen in a short TTI, the apparatus comprising

• a memory configured to store a computer-readable program and a processor configured to execute the computer-readable program to:
• determine whether there is a short-TTI service;
• and
• instruct the UE to listen to a downlink control channel in a short TTI, only when there is a short-TTI service;
• wherein the processor is configured to execute the computer-readable program to:
• if there is a short-TTI service, instruct whether the UE needs to listen to a downlink control channel in a short TTI, in a DCI transmitted in a legacy control region, or a dedicated instructing channel, or an MAC CE;
• or
• instruct implicitly whether the UE needs to listen to a downlink control channel in a short TTI, by transmitting DCI in a short TTI in the legacy control region;
• wherein the processor is configured to execute the computer-readable program to instruct whether the UE needs to listen to a downlink control channel in a short TTI, by carrying information in an ON/OFF information field;
• or
• instruct whether the UE needs to listen to a downlink control channel in a short TTI, by instructing a quantity of short TTIs, and/or sequence numbers of short TTIs.

An apparatus for listening in a short TTI, the apparatus comprising:

• a memory configured to store a computer-readable program and a processor configured to execute the computer-readable program to:
• receive an instruction instructing whether or not to listen to a downlink control channel in a short TTI;
• and
• listen to a downlink control channel in a short TTI, in response to the instruction instructing to listen to a downlink control channel in a short TTI;
• wherein the processor is configured to execute the computer-readable program to receive the instruction instructing whether or not to listen to a downlink control channel in a short TTI, in DCI transmitted in a legacy control region, or
• a dedicated instructing channel, or an MAC CE;
• or to decide whether to listen to a downlink control channel in a short TTI, according to whether DCI of a short TTI is received in the legacy control region;
• wherein the processor is configured to execute the computer-readable program to receive the instruction instructing whether or not to listen to a downlink control channel in a short TTI, from instructed information carried in an ON/OFF information field, or
• to receive the instruction instructing whether or not to listen to a downlink control channel in a short TTI, from a quantity number of short TTIs and/or sequence numbers of short TTIs.