Operating method for wireless communication system using improved carrier aggregation technology and device therefor

• US 9,414,410 B2
• Filed: 10/10/2012
• Issued: 08/09/2016
• Est. Priority Date: 10/10/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jang, Jae Hyuk, Kim, Soeng-Hun
• Primary Examiner(s): KHIRODHAR, MAHARISHI V
• Application Number:
  US14/347,842
• Publication Number:
  US 20140233524A1
• Time in Patent Office: 1,399 Days
• US Class Current: 1/1
• CPC Class Codes: H04J 11/0053 using co-ordinated multipoint transmission/reception co-ordinated antenna or beam-forming aspects H04B7/022
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/365 Power headroom reporting
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The present invention relates to a random access processing method, a processing method for processing different time-division setups, a method for reporting downlink timing differences, and a method for transmitting a sounding reference signal, when carrier aggregation technology is used in a wireless communication system. Through the present invention, a user can use improved carrier integration technology, and communicate without an erroneous operation.

Claims

1. A power headroom report (PHR) transmission method of a terminal in a wireless communication system, the method comprising:

detecting an event associated with a PHR triggering;

identifying whether a random access response message is received for at least one activated secondary cell;

identifying whether a timing advance timer of the at least one activated secondary cell is running;

generating PHR corresponding to the at least one secondary cell, if the timing advance timer of the at least one activated secondary cell is running; and

transmitting the PHR to the primary cell.

2. The method of claim 1, further comprising receiving, before the detecting of the event associated with the PHR triggering, a radio resource control (RRC) connection reconfiguration message including parameters necessary for the terminal to perform a random access procedure to the at least one secondary cell.

3. The method of claim 2, wherein the RRC connection reconfiguration message comprises at least one of a predetermined number of times of transmitting a preamble (preambleTransMax) and a period for receiving a response message after transmitting the preamble (ra-ResponseWindowSize).

4. A power headroom report (PHR) reception method of a base station in a wireless communication system, the method comprising:

transmitting, to a terminal, an activation medium access control (MAC) control element (CE) message associated with at least one secondary cell; and

receiving, from the terminal, a PHR generated corresponding to at least one activated secondary cell associated with reception of a random access response message,

wherein the at least one activated secondary cell of a timing advance timer is running.

5. The method of claim 4, further comprising transmitting, to the terminal, a radio resource control (RRC) connection reconfiguration message including parameters necessary for the terminal to perform random access procedure to the at least one secondary cell before the transmitting of the activation MAC CE message.

6. The method of claim 5, wherein the RRC connection reconfiguration message comprises at least one of a predetermined number of times of transmitting a preamble (preambleTransMax) and a period for receiving a response message after transmitting the preamble (ra-ResponseWindowSize).

7. A terminal transmitting power headroom report (PHR) in a wireless communication system, the terminal comprising:

a transceiver configured to transmit and receive signal to and from a base station; and

a controller configured to;

detect an event associated with a PHR triggering,

identify whether a random access response message is received for at least one activated secondary cell,

identify whether a timing advance timer of the at least one activated secondary cell is running,

generate, if the timing advance timer of the at least one activated secondary cell is running, PHR corresponding to the at least one secondary cell, and

transmit the PHR to the primary cell.

8. The terminal of claim 7, wherein the controller is further configured to receive, before detecting the event associated with the PHR triggering, a radio resource control (RRC) connection reconfiguration message including parameters necessary for the terminal to perform a random access procedure to the at least one secondary cell.

9. The terminal of claim 8, wherein the RRC connection reconfiguration message comprises at least one of a predetermined number of times of transmitting a preamble (preambleTransMax) and a period for receiving a response message after transmitting the preamble (ra-ResponseWindowSize).

10. A base station receiving power headroom report (PHR) in a wireless communication system, the base station comprising:

a transceiver configured to transmit and receive signal to and from a terminal; and

a controller configured to;

transmit, to the terminal, an activation medium access control (MAC) control element (CE) message associated with at least one secondary cell, and

receive, from the terminal, a PHR generated corresponding to at least one activated secondary cell associated with reception of a random access response message,

wherein the at least one activated secondary cell of a timing advance timer is running.

11. The base station of claim 10, wherein the controller is further configured to transmit, to the terminal, a radio resource control (RRC) connection reconfiguration message including parameters necessary for the terminal to perform random access to the secondary cell before the transmitting of the activation MAC CE message.

12. The base station of claim 11, wherein the RRC connection reconfiguration message comprises at least one of a predetermined number of times of transmitting a preamble (preambleTransMax) and a period for receiving a response message after transmitting the preamble (ra-ResponseWindowSize).