Method and device for short-latency communications in UE and base station

A method in a base station supporting short-latency radio communications, comprising:

• transmitting K radio signal groups, K being a positive integer greater than 1;
• receiving a single uplink signaling related to correct decoding of the transmitted K radio signal groups, the single uplink signaling comprising HARQ-ACK information;
• wherein:
• the K radio signal groups are transmitted in K time windows on a same carrier, and any two time windows of the K time windows are orthogonal in the time domain;
• lengths of Enhanced Transmission Time Intervals (eTTIs) corresponding to the K radio signal groups correspond to K time lengths respectively, and any two time lengths of the K time lengths are not equal;
• the HARQ-ACK information indicates whether a coding block in each of the K radio signal groups is correctly decoded;
• the number of radio signals in the K radio signal groups are Q1, . . . , QK respectively, the Q1, . . . , QK being positive integers respectively;
• and
• in the K radio signal groups that are associated with the uplink signaling, an eTTI length corresponding to a radio signal group transmitted earlier is greater than an eTTI length corresponding to a radio signal group transmitted later.

A UE supporting short-latency radio communications, comprising:

• a first receiving module, to receive K radio signal groups, K being a positive integer greater than 1;
• a first transmitting module, to transmit a single uplink signaling related to correct decoding of the received K radio signal groups, the single uplink signaling comprising HARQ-ACK information;
• wherein:
• the K radio signal groups are received in K time windows on a same carrier, and any two time windows of the K time windows are orthogonal in the time domain;
• lengths of Enhanced Transmission Time Intervals (eTTIs) corresponding to the K radio signal groups correspond to K time lengths respectively, and any two time lengths of the K time lengths are not equal;
• the HARQ-ACK information indicates whether a coding block in each of the K radio signal groups is correctly decoded;
• the number of radio signals in the K radio signal groups are Q1, . . . , QK respectively, the Q1, . . . , QK being positive integers respectively;
• and
• in the K radio signal groups that are associated with the uplink signaling, an eTTI length corresponding to a radio signal group transmitted earlier is greater than an eTTI length corresponding to a radio signal group transmitted later.

Abase station device supporting short-latency radio communications, comprising:

• a second transmitting module, to transmit K radio signal groups, K being a positive integer greater than 1;
• a second receiving module, to receive a single uplink signaling related to correct decoding of the transmitted K radio signal groups, the single uplink signaling comprising HARQ-ACK information;
• wherein:
• the K radio signal groups are transmitted in K time windows on a same carrier, and any two time windows of the K time windows are orthogonal in the time domain;
• lengths of Enhanced Transmission Time Intervals (eTTIs) corresponding to the K radio signal groups correspond to K time lengths respectively, and any two time lengths of the K time lengths are not equal;
• the HARQ-ACK information indicates whether a coding block in each of the K radio signal groups is correctly decoded;
• the number of radio signals in the K radio signal groups are Q1, . . . , QK respectively, the Q1, . . . , QK being positive integers respectively;
• and
• in the K radio signal groups that are associated with the uplink signaling, an eTTI length corresponding to a radio signal group transmitted earlier is greater than an eTTI length corresponding to a radio signal group transmitted later.