Dynamic sub-frame configuration method and apparatus in time division duplex system

• US 9,084,258 B2
• Filed: 06/28/2011
• Issued: 07/14/2015
• Est. Priority Date: 09/02/2010
• Status: Active Grant

• Current Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Original Assignee: ZTE Corporation
• Inventors: Hu, Liujun, Bi, Feng, Zhu, Changqing
• Primary Examiner(s): Nguyen, Brian D
• Assistant Examiner(s): NGUYEN, TOAN D
• Application Number:
  US13/820,257
• Publication Number:
  US 20130155917A1
• Time in Patent Office: 1,477 Days
• Field of Search: 370/280, 370/294, 370/332, 370/350, 455/446, 455/552.1
• US Class Current: 1/1
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/0003 Two-dimensional division time-code division H04J11/00, H04J13/00; for time-space division H04B7/0413, H04B7/0697
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 16/10 Dynamic resource partitioning
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames

Abstract

The present application discloses a dynamic sub-frame configuration method in the TDD system. The method includes: in the case that the uplink and downlink sub-frame configuration of a cell and the uplink and downlink sub-frame configuration of its neighboring cell are different in the configuration of a sub-frame, a part of resources on the sub-frame are made to be silent for the cell, and the resources on the sub-frame corresponding to the resources not silenced on the sub-frame for cell are made to be silent for the neighboring cell; or, a part of resources on the sub-frame are made to be silent for the neighboring cell, and the resources on the sub-frame corresponding to the resources not silenced on the sub-frame for the neighboring cell are made to be silent for the cell. The present application further provides a dynamic sub-frame configuration apparatus in the TDD system. Not only can the problem that inter-cell interference is introduced during sub-frame switching in the TDD system be solved, but also the normal uplink and downlink measurement can be guaranteed, without affecting ACK/NACK feedback and HARQ process, and meantime the frequency spectrum utilization ratio is increased.

Claims

1. A dynamic sub-frame configuration method in a Time Division Duplex (TDD) method, comprising:

in the case that the uplink and downlink sub-frame configuration of a cell and the uplink and downlink sub-frame configuration of its neighboring cell are different in the configuration of a sub-frame,

silencing resources in a set timeslot and/or a set bandwidth on the sub-frame for the cell, and silencing resources on the sub-frame for the neighboring cell corresponding to the resources not silenced on the sub-frame for the cell;

alternatively, silencing the resources in the set timeslot and/or the set bandwidth on the sub-frame for the neighboring cell, and silencing the resources on the sub-frame for the cell corresponding to the resources not silenced on the sub-frame for the neighboring cell.

2. The method according to claim 1, further comprising:

when the cell and/or the neighboring cell need/needs to transmit information on the sub-frame, transmitting the information only through their respective resources not silenced on the sub-frame.

3. The method according to claim 2, wherein silencing the resources in the set timeslot comprises:

silencing the resources in a first timeslot of the sub-frame for the cell, and silencing the resources in a second timeslot of the sub-frame for the neighboring cell;

or

silencing the resources in the second timeslot of the sub-frame for the cell, and silencing the resources in the first timeslot of the sub-frame for the neighboring cell.

4. The method according to claim 2, wherein silencing the resources in the set timeslot and the set bandwidth comprises:

silencing the resources in a first or a second timeslot of the sub-frame within the set bandwidth for the cell, and silencing the resources on the sub-frame for the neighboring cell corresponding to the resources not silenced on the sub-frame for the cell;

or

silencing the resources in the first or the second timeslot of the sub-frame within the set bandwidth for the neighboring cell, and silencing the resources on the sub-frame for the cell corresponding to the resources not silenced on the sub-frame for the neighboring cell.

5. The method according to claim 2, wherein silencing the resources in the set timeslot and the set bandwidth comprises:

silencing the resources except control domain in a first timeslot of the sub-frame within the set bandwidth and the resources in a second timeslot of the sub-frame within the set bandwidth for the cell, and silencing the resources on the sub-frame for the neighboring cell corresponding to the resources not silenced on the sub-frame for the cell;

or

silencing the resources except the control domain in the first timeslot of the sub-frame within the set bandwidth and the resources in the second timeslot of the sub-frame within the set bandwidth for the neighboring cell, and silencing the resources on the sub-frame for the cell corresponding to the resources not silenced on the sub-frame for the neighboring cell.

6. The method according to claim 2, wherein silencing the resources in the set timeslot and the set bandwidth comprises:

presetting a first set bandwidth and a second set bandwidth;

silencing the resources except control domain in a first timeslot of the sub-frame within the first set bandwidth and the resources in a second timeslot of the sub-frame within the second set bandwidth for the cell, and silencing the resources on the sub-frame for the neighboring cell corresponding to the resources not silenced on the sub-frame for the cell;

or

silencing the resources except the control domain in the first timeslot of the sub-frame within the first set bandwidth and the resources in the second timeslot of the sub-frame within the second set bandwidth for the neighboring cell, and silencing the resources on the sub-frame for the cell corresponding to the resources not silenced on the sub-frame for the neighboring cell.

7. The method according to claim 1, wherein the quantity of the set bandwidth is one or more.

8. The method according to claim 1, wherein silencing the resources in the set timeslot comprises:

silencing the resources in a first timeslot of the sub-frame for the cell, and silencing the resources in a second timeslot of the sub-frame for the neighboring cell;

or

silencing the resources in the second timeslot of the sub-frame for the cell, and silencing the resources in the first timeslot of the sub-frame for the neighboring cell.

9. The method according to claim 1, wherein silencing the resources in the set timeslot and the set bandwidth comprises:

silencing the resources in a first or a second timeslot of the sub-frame within the set bandwidth for the cell, and silencing the resources on the sub-frame for the neighboring cell corresponding to the resources not silenced on the sub-frame for the cell;

or

silencing the resources in the first or the second timeslot of the sub-frame within the set bandwidth for the neighboring cell, and silencing the resources on the sub-frame for the cell corresponding to the resources not silenced on the sub-frame for the neighboring cell.

10. The method according to claim 1, wherein silencing the resources in the set timeslot and the set bandwidth comprises:

silencing the resources except control domain in a first timeslot of the sub-frame within the set bandwidth and the resources in a second timeslot of the sub-frame within the set bandwidth for the cell, and silencing the resources on the sub-frame for the neighboring cell corresponding to the resources not silenced on the sub-frame for the cell;

or

silencing the resources except the control domain in the first timeslot of the sub-frame within the set bandwidth and the resources in the second timeslot of the sub-frame within the set bandwidth for the neighboring cell, and silencing the resources on the sub-frame for the cell corresponding to the resources not silenced on the sub-frame for the neighboring cell.

11. The method according to claim 1, wherein silencing the resources in the set timeslot and the set bandwidth comprises:

presetting a first set bandwidth and a second set bandwidth;

silencing the resources except control domain in a first timeslot of the sub-frame within the first set bandwidth and the resources in a second timeslot of the sub-frame within the second set bandwidth for the cell, and silencing the resources on the sub-frame for the neighboring cell corresponding to the resources not silenced on the sub-frame for the cell;

or

silencing the resources except the control domain in the first timeslot of the sub-frame within the first set bandwidth and the resources in the second timeslot of the sub-frame within the second set bandwidth for the neighboring cell, and silencing the resources on the sub-frame for the cell corresponding to the resources not silenced on the sub-frame for the neighboring cell.

12. A dynamic sub-frame configuration apparatus in a Time Division Duplex (TDD) apparatus, comprising:

a first silencing unit and a second silencing unit, wherein in the case that the uplink and downlink sub-frame configuration of a cell and the uplink and downlink sub-frame configuration of its neighboring cell are different in the configuration of a sub-frame,

the first silencing unit is configured to silence resources in a set timeslot and/or a set bandwidth on the sub-frame for the cell, and the second silencing unit is configured to silence resources on the sub-frame for the neighboring cell corresponding to the resources on the sub-frame not silenced by the first silencing unit for the cell;

or

the first silencing unit is configured to silence the resources in the set timeslot and/or the set bandwidth on the sub-frame for the neighboring cell, and the second silencing unit is configured to silence the resources on the sub-frame for the cell corresponding to the resources on the sub-frame not silenced by the first silencing unit for the neighboring cell.

13. The apparatus according to claim 12, further comprising:

a transmitting unit, wherein

the transmitting unit is configured to, when the cell and/or the neighboring cell need/needs to transmit information on the sub-frame, transmit the information only through their respective resources not silenced on the sub-frame.

14. The apparatus according to claim 12, wherein the first silencing unit is configured to silence the resources in a first timeslot of the sub-frame for the cell, and the second silencing unit is configured to silence the resources in a second timeslot of the sub-frame for the neighboring cell;

or

the first silencing unit is configured to silence the resources in the second timeslot of the sub-frame for the cell, and the second silencing unit is configured to silence the resources in the first timeslot of the sub-frame for the neighboring cell.

15. The apparatus according to claim 12, wherein the first silencing unit is configured to silence the resources in a first or a second timeslot of the sub-frame within the set bandwidth for the cell, and the second silencing unit is configured to silence the resources on the sub-frame for the neighboring cell corresponding to the resources not silenced on the sub-frame for the cell;

or

the first silencing unit is configured to silence the resources in the first or the second timeslot of the sub-frame within the set bandwidth for the neighboring cell, and the second silencing unit is configured to silence the resources on the sub-frame for the cell corresponding to the resources not silenced on the sub-frame for the neighboring cell.

16. The apparatus according to claim 12, wherein the first silencing unit is configured to silence the resources except control domain in a first timeslot of the sub-frame within the set bandwidth and the resources in a second timeslot of the sub-frame within the set bandwidth for the cell, and the second silencing unit is configured to silence the resources on the sub-frame for the neighboring cell corresponding to the resources not silenced on the sub-frame for the cell;

or

the first silencing unit is configured to silence the resources except the control domain in the first timeslot of the sub-frame within the set bandwidth and the resources in the second timeslot of the sub-frame within the set bandwidth for the neighboring cell, and the second silencing unit is configured to silence the resources on the sub-frame for the cell corresponding to the resources not silenced on the sub-frame for the neighboring cell.

17. The apparatus according to claim 12, wherein a first set bandwidth and a second set bandwidth are preset,

wherein the first silencing unit is configured to silence the resources except control domain in a first timeslot of the sub-frame within the first set bandwidth and the resources in a second timeslot of the sub-frame within the second set bandwidth for the cell, and the second silencing unit is configured to silence the resources on the sub-frame for the neighboring cell corresponding to the resources not silenced on the sub-frame for the cell;

or

the first silencing unit is configured to silence the resources except the control domain in the first timeslot of the sub-frame within the first set bandwidth and the resources in the second timeslot of the sub-frame within the second set bandwidth for the neighboring cell, and the second silencing unit is configured to silence the resources on the sub-frame for the cell corresponding to the resources not silenced on the sub-frame for the neighboring cell.