Base station, terminal, system and method for data transmitting in time-division duplex system

A data transmission method for a Time Division Duplex (TDD) system, comprising:

• after receiving an uplink scheduling grant signaling and/or an ACK/NACK feedback signaling sent by a base station on a carrier m, a terminal sending uplink data through a Physical Uplink Shared Channel (PUSCH) on a carrier n;
• wherein, m≠n;
• a timing relationship between a subframe where the PUSCH is located and a subframe by which the base station sends the uplink scheduling grant signaling and/or the ACK/NACK feedback signaling is identical with a Hybrid Automatic Repeat Request (HARQ) timing relationship corresponding to an uplink/downlink configuration of the carrier n;
• or,
• the timing relationship between the subframe where the PUSCH is located and the subframe by which the base station sends the uplink scheduling grant signaling and/or the ACK/NACK feedback signaling is identical with an HARQ timing relationship corresponding to an uplink/downlink configuration used by a carrier with more uplink subframes or less downlink subframes between the carrier m and the carrier n;
• or,
• the timing relationship between the subframe where the PUSCH is located and the subframe by which the base station sends the uplink scheduling grant signaling and/or the ACK/NACK feedback signaling is identical with an HARQ timing relationship corresponding to an uplink/downlink configuration used by a carrier with less uplink subframes or more downlink subframes between the carrier m and the carrier n.

A base station for performing data transmission in a Time Division Duplex (TDD) system, comprising at least one processor executing a sending module and a receiving module, wherein,

• the sending module is configured to:
• send an uplink scheduling grant signaling to a terminal on a carrier m, and after the receiving module receives uplink data sent by the terminal through a Physical Uplink Shared Channel (PUSCH) on a carrier n, send an ACK/NACK feedback signaling corresponding to the PUSCH to the terminal on the carrier m;
• and
• the receiving module is configured to:
• receive the uplink data sent by the terminal through the PUSCH on the carrier n;
• wherein, m≠n;
• a timing relationship between a subframe by which the base station sends the uplink scheduling grant signaling and/or the ACK/NACK feedback signaling and a subframe where the PUSCH is located is a Hybrid Automatic Repeat Request (HARQ) timing relationship corresponding to an uplink/downlink configuration of the carrier n;
• or,
• the timing relationship between the subframe by which the base station sends the uplink scheduling grant signaling and/or the ACK/NACK feedback signaling and the subframe where the PUSCH is located is an HARQ timing relationship corresponding to an uplink/downlink configuration used by a carrier with more uplink subframes or less downlink subframes between the carrier m and the carrier n;
• or,
• the timing relationship between the subframe by which the base station sends the uplink scheduling grant signaling and/or the ACK/NACK feedback signaling and the subframe where the PUSCH is located is an HARQ timing relationship corresponding to an uplink/downlink configuration used by a carrier with less uplink subframes or more downlink subframes between the carrier m and the carrier n.

A terminal for performing data transmission in a Time Division Duplex (TDD) system, comprising at least one processor executing a receiving module and a sending module, wherein,

• the receiving module is configured to:
• receive an uplink scheduling grant signaling and/or an ACK/NACK feedback signaling sent by a base station on a carrier m;
• and
• the sending module is configured to:
• after the receiving module receives the uplink scheduling grant signaling and/or the ACK/NACK feedback signaling sent by the base station on the carrier m, send uplink data through a Physical Uplink Shared Channel (PUSCH) on a carrier n;
• wherein, m≠n;
• a timing relationship between a subframe where the PUSCH is located and a subframe by which the base station sends the uplink scheduling grant signaling and/or the ACK/NACK feedback signaling is a Hybrid Automatic Repeat Request (HARQ) timing relationship corresponding to an uplink/downlink configuration of the carrier n;
• or,
• the timing relationship between the subframe where the PUSCH is located and the subframe by which the base station sends the uplink scheduling grant signaling and/or the ACK/NACK feedback signaling is an HARQ timing relationship corresponding to an uplink/downlink configuration used by a carrier with more uplink subframes or less downlink subframes between the carrier m and the carrier n;
• or,
• the timing relationship between the subframe where the PUSCH is located and the subframe by which the base station sends the uplink scheduling grant signaling and/or the ACK/NACK feedback signaling is an HARQ timing relationship corresponding to an uplink/downlink configuration used by a carrier with less uplink subframes or more downlink subframes between the carrier m and the carrier n.