DYNAMIC TDD DATA CHANNEL TRANSMISSION METHOD AND APPARATUS FOR WIRELESS COMMUNICATION SYSTEM

• US 20120300681A1
• Filed: 05/23/2012
• Published: 11/29/2012
• Est. Priority Date: 05/23/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: JI, Hyoungju, CHO, Joonyoung, CHOI, Seunghoon, KIM, Youngbum
• Granted Patent: US 9,185,668 B2
• Time in Patent Office: Days
• US Class Current: 370/280
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1469 using time-sharing
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A data channel transmission method and apparatus is provided for the wireless communication system operating in a dynamic Time Division Duplex (TDD) mode. The dynamic TDD data channel transmission method and apparatus herein optimizes system performance in adaptation to the variation of the uplink and downlink traffic, and configures the radio frame such that all of the subframes have a static region, thereby operating along with other terminals without compromising channel estimation performance.

Claims

1. A data transmission/reception method of a base station, comprising:

transmitting configuration information of a plurality of subframes divided at a time axis in a radio frame;

dividing each of downlink subframes among the subframes into a semi-static region and a dynamic region; and

transmitting a control signal in the semi-static region and receiving uplink data or transmitting downlink data in the dynamic region.

2. The data transmission/reception method of claim 1, wherein transmitting the control signal in the semi-static region and receiving uplink data or transmitting downlink data in the dynamic region comprises:

configuring the downlink subframe as a Multi-Media Broadcast over a Single Frequency Network (MBSFN) subframe; and

transmitting the configuration information.

3. The data transmission/reception method of claim 1, wherein transmitting the control signal in the semi-static region and receiving uplink data or transmitting downlink data in the dynamic region comprises receiving the uplink data by referencing an uplink reference signal at 5^th and 11^th symbols in the dynamic region.

4. The data transmission/reception method of claim 1, wherein the control signal comprises channel allocation information for uplink or downlink data in the dynamic region or channel allocation information for uplink data in an uplink subframe linked to the downlink subframe among the subframes.

5. A data transmission/reception method of a terminal, comprising:

receiving configuration information of a plurality of subframes divided at time axis in a radio frame;

discriminating between a semi-static region and a dynamic region of each of downlink subframes among the subframes; and

receiving a control signal in the semi-static region and transmitting uplink data or receiving downlink data in the dynamic region.

6. The data transmission/reception method of claim 5, wherein receiving the control signal in the semi-static region and transmitting uplink data or receiving downlink data in the dynamic region comprises transmitting the uplink data by referencing an uplink reference signal at 5^th and 11^th symbols in the dynamic region.

7. The data transmission/reception method of claim 5, wherein receiving the control signal in the semi-static region and transmitting uplink data or receiving downlink data in the dynamic region comprises receiving information on the downlink subframe configured as a Multi-Media Broadcast over a Single Frequency Network (MBSFN) subframe.

8. The data transmission/reception method of claim 5, wherein the control signal comprises channel allocation information for uplink or downlink data in the dynamic region or channel allocation information for uplink data in an uplink subframe linked to the downlink subframe among the subframes.

9. A data transmission/reception apparatus of a base station, comprising:

a controller which controls transmitting configuration information of a plurality of subframes divided at a time axis in a radio frame and dividing each of downlink subframes among the subframes into a semi-static region and a dynamic region; and

a communication unit which transmits a control signal in the semi-static region and receives uplink data or transmits downlink data in the dynamic region under the control of the controller.

10. The data transmission/reception apparatus of claim 9, wherein the controller controls configuring the downlink subframe as a Multi-Media Broadcast over a Single Frequency Network (MBSFN) subframe and transmitting configuration information.

11. The data transmission/reception apparatus of claim 9, wherein the control signal comprises channel allocation information for uplink or downlink data in the dynamic region or channel allocation information for uplink data in an uplink subframe linked to the downlink subframe among the subframes.

12. A data transmission/reception apparatus of a terminal, comprising:

a controller which controls receiving configuration information of a plurality of subframes divided at a time axis in a radio frame and discriminating between a semi-static region and a dynamic region of each of downlink subframes among the subframes; and

a communication unit which receives a control signal in the semi-static region and transmits uplink data or receives downlink data in the dynamic region under the control of the controller.

13. The data transmission/reception apparatus of claim 12, wherein the controller controls transmitting the uplink data by referencing an uplink reference signal at 5^th and 11^th symbols in the dynamic region.

14. The data transmission/reception apparatus of claim 12, wherein the controller controls receiving information on the downlink subframe configured as a Multi-Media Broadcast over a Single Frequency Network (MBSFN) subframe.

15. The data transmission/reception apparatus of claim 12, wherein the control signal comprises channel allocation information for uplink or downlink data in the dynamic region or channel allocation information for uplink data in an uplink subframe linked to the downlink subframe among the subframes.