METHOD AND APPARATUS FOR EFFICIENT CONTENTION-BASED TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM

• US 20120213196A1
• Filed: 12/03/2010
• Published: 08/23/2012
• Est. Priority Date: 12/03/2009
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Chung, Jae Hoon, Moon, Sung Ho, Han, Seung Hee, Lee, Moon Il
• Application Number:
  US13/504,406
• Publication Number:
  US 20120213196A1
• Time in Patent Office: Days
• US Class Current: 370/330
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• 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 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04W 48/08 Access restriction or access information delivery, e.g. discovery data delivery signalling during connection H04W76/00
• CPC Class Codes: H04W 72/00 Local resource management
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/08 Non-scheduled access, e.g. ALOHA hybrid access H04W74/02
• CPC Class Codes: H04W 74/0841 with collision treatment
• CPC Class Codes: H04W 76/10 Connection setup

Abstract

The present invention relates to a wireless communication system, and more particularly to a method and apparatus for efficient contention-based transmission in a wireless communication system. The method for performing contention-based transmission in a wireless communication system according to one embodiment of the present invention comprises: setting a radio resource control (RRC) connection with a receiver end where the contention-based transmission is received; setting a resource area for the contention-based transmission to allow a collision with other transmission; and transmitting at least one of the data and control information on the resource area, wherein the resource area for the contention-based transmission can be hopped on a physical resource.

Claims

1. A method for performing contention-based transmission in a wireless communication system, comprising:

configuring a Radio Resource Control (RRC) connection with a receiver for receiving the contention-based transmission;

determining a resource region for the contention-based transmission which permits collision with other transmission; and

transmitting at least one of data and control information on the resource region,

wherein the resource region for the contention-based transmission is hopped on a physical resource.

2. The method of claim 1, wherein the physical resource is at least one of a time resource, a frequency resource, a code resource, and a spatial resource.

3. The method of claim 1, wherein the resource region for the contention-based transmission is multiplexed in the physical resource by applying at least one of a Time Division Multiplexing (TDM) scheme and a Frequency Division Multiplexing (FDM) scheme.

4. The method of claim 1, wherein the resource region for the contention-based transmission is defined as a predetermined resource region or is determined based on signaling from a cell.

5. The method of claim 1, wherein the resource region for the contention-based transmission is configured as a resource region which distinguishes from or overlaps with a resource region for scheduling-based transmission.

6. The method of claim 1, wherein the resource region for the contention-based transmission is configured as a contiguous or non-contiguous resource region.

7. The method of claim 1, wherein a hopping granularity of the resource region for the contention-based transmission in the physical resource is defined as a granularity less than one subframe in a time resource.

8. The method of claim 1, wherein the contention-based transmission is temporarily performed before scheduling-based transmission is performed.

9. The method of claim 1, wherein retransmission of the contention-based transmission is transmitted at a timing when an offset is applied based on a retransmission timing according to a synchronous Hybrid Automatic Repeat Request (HARQ) Round Trip Time (RTT).

10. The method of claim 1, wherein a cyclic shift index of a demodulation reference signal for the contention-based transmission is determined from an index of the physical resource.

11. The method of claim 1, wherein a transmission parameter for the contention-based transmission uses a fixed value.

12. The method of claim 1, wherein the contention-based transmission in multi-antenna transmission is performed by a random beamforming scheme.

13. The method of claim 1, wherein the contention-based transmission in multi-carrier transmission triggers carrier activation.

14. A user equipment for performing contention-based transmission in a wireless communication system, comprising:

a reception module for receiving downlink signals from a base station;

a transmission module for transmitting uplink signals to the base station; and

a processor for controlling the user equipment including the reception module and the transmission module,

wherein the processor is configured to

configure a Radio Resource Control (RRC) connection with the base station receiving the contention-based transmission;

determine a resource region for the contention-based transmission which permits collision with other transmission; and

transmit at least one of uplink data and control information in the resource region, and

wherein the resource region for the contention-based transmission is hopped in a physical resource.

15. A base station for performing contention-based transmission in a wireless communication system, comprising:

a reception module for receiving uplink signals from one or more user equipments;

a transmission module for transmitting downlink signals to the one or more user equipments; and

a processor for controlling the base station including the reception module and the transmission module,

wherein the processor is configured to

configure a Radio Resource Control (RRC) connection with the one or more user equipments receiving the contention-based transmission;

determine a resource region for the contention-based transmission which permits collision with other transmission; and

transmit at least one of downlink data and control information in the resource region, and

wherein the resource region for the contention-based transmission is hopped in a physical resource.