METHOD FOR PERFORMING RANDOM ACCESS PROCEDURE AND DEVICE THEREFOR

• US 20150351132A1
• Filed: 02/17/2014
• Published: 12/03/2015
• Est. Priority Date: 03/29/2013
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Sungjun, Jung, Sunghoon, Yi, Seungjune, Lee, Youngdae
• Application Number:
  US14/654,618
• Publication Number:
  US 20150351132A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 74/004 in the uplink, i.e. towards network
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 76/00 Connection management
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals

Abstract

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing random access procedure by a UE (User Equipment) in the a wireless communication system, the method comprising: transmitting random access preamble to the BS (Base Station); receiving response message including UL (Uplink) grant and TTI (Transmission Time Interval) bundling information; and performing UL transmission using the UL grant by TTI bundling operation.

Claims

1. A method for performing random access procedure by a UE (User Equipment) in a wireless communication system, the method comprising:

transmitting a random access preamble to a BS (Base Station);

receiving a response message including an UL (Uplink) grant;

receiving TTI (Transmission Time Interval) bundling information; and

performing an UL transmission using the UL grant'"'"'by TTI bundling operation based on the TTI bundling information.

2. The method of claim 1, wherein the TTI bundling information is received through the response message.

3. The method of claim 1, wherein the random access preamble is for an MTC_UE (Machine Type Communication_UE).

4. The method of claim 1, wherein the TTI bundling information indicates whether the TTI bundling operation is applied to the UL grant or not.

5. The method of claim 1, whererin the TTI bundling information comprises TTI_BUNDLE_SIZE configured by at least one of the BS, a MME (Mobility Management Entity) or an S-GW (Serving-GateWay).

6. The method of claim 5, wherein the UL transmission by the TTI bundling operation comprises multiple UL transmissions without waiting for feedback in subsequent subframe until the TTI-BUNDLE_SIZE is elapsed.

7. The method of claim 1, whererin the TTI bundling information is received through at least system information or a paging message.

8. A UE (User Equipment) for performing random access procedure in a wireless communication system, the UE comprising:

an RF (Radio Frequency) module; and

a processor to control the RF module,

wherein the processor configured to transmit a random access preamble to a BS (Base Station), to receive response message including UL (Uplink) grant, to receive TTI (Transmission Time Interval) bundling information, and to perform an UL transmission using the UL grant by TTI bundling operation based on the TTI bundling information.

9. The UE of claim 8, wherein the processor configured to receive the TTI bundling information through the response message.

10. The UE of claim 8 wherein the random access preamble is for an MTC_UE (Machine Type Communication_UE).

11. The UE of claim 8, wherein the TTI bundling information indicates whether the TTI bundling operation is applied to the UL grant or not.

12. The UE of claim 8, whererin the TTI bundling information comprises TTI_BUNDLE_SIZE configured by at least one of the BS, a MME (Mobility Management Entity) or an S-GW (Serving-GateWay).

13. The UE of claim 12, wherein the processor further configured to perform multiple UL transmissions without waiting for feedback in subsequent subframe until the TTI-BUNDLE_SIZE is elapsed.

14. The UE of claim 8, wherein the processor configured to receive the TTI bundling information through at least system information or a paging message.