Method and apparatus for logging information

Patent metadata

Field	Value
Publication number	US-10779349-B2
Application number	US-201715495189-A
Country	US
Kind code	B2
Filing date	Apr 24, 2017
Priority date	Jan 9, 2012
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

The present invention relates to a method and an apparatus for logging a radio resource control (RRC) failure of user equipment (UE) and receiving the log. According to one embodiment of the present invention, a method for logging an RRC failure of UE may comprise the steps of: attempting random access; if the failure of random access is sensed, logging information on the failure; and if the success of random access is sensed, transmitting information on the failure logged before the success to a connected base station. According to one embodiment of the present invention, an apparatus and a method which effectively log a channel state or a connection failure can be provided.

First claim

What is claimed is:

1. A method by a user equipment (UE) in a wireless communication system, the method comprising:
transmitting at least one preamble for a random access;
transmitting a first radio resource control (RRC) connection request message;
starting a timer associated with an RRC connection setup;
based on an expiry of the timer, setting first information indicating whether a maximum power level was used for a last transmitted preamble of the at least one transmitted preamble;
transmitting a second RRC connection request message;
transmitting an RRC connection setup complete message including second information indicating an availability of radio link failure related measurements in case that an RRC connection setup message is received; and
transmitting a UE information response message including the first information in case that a UE information request message is received.

2. The method of claim 1 , wherein the at least one preamble is transmitted by increasing a transmit power level step by step.

3. The method of claim 1 , further comprising:
based on the expiry of the timer, setting third information indicating a number of the at least one transmitted preamble.

4. The method of claim 3 , further comprising, based on the expiry of the timer, at least one of:
setting a cell identity of a cell;
setting channel measurement information of the cell;
setting channel measurement information of at least one neighbor cell; and
setting a content of location information.

5. The method of claim 4 , wherein the UE information response message further includes at least one of the third information indicating the number of the at least one transmitted preamble, the cell identity of the cell, the channel measurement information of the cell, the channel measurement information of the at least one neighbor cell, or the content of the location information.

6. A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
transmit at least one preamble for a random access,
transmit a first radio resource control (RRC) connection request message,
start a timer associated with an RRC connection setup,
based on an expiry of the timer, set first information indicating whether a maximum power level was used for a last transmitted preamble of the at least one transmitted preamble,
transmit a second RRC connection request message,
transmit an RRC connection setup complete message including second information indicating an availability of radio link failure related measurements in case that an RRC connection setup message is received, and
transmit a UE information response message including the first information in case that a UE information request message is received.

7. The UE of claim 6 , wherein the controller is further configured to increase a transmit power level for the at least one preamble step by step.

8. The UE of claim 6 , wherein the controller is further configured to, based on the expiry of the timer, set third information indicating a number of the at least one transmitted preamble.

9. The UE of claim 8 , wherein the controller is further configured to, based on the expiry of the timer, perform at least one of:
setting a cell identity of a cell;
setting channel measurement information of the cell;
setting channel measurement information of at least one neighbor cell; and
setting a content of location information.

10. The UE of claim 9 , wherein the UE information response message further includes at least one of the third information indicating the number of the at least one transmitted preamble, the cell identity of the cell, the channel measurement information of the cell, the channel measurement information of the at least one neighbor cell, or the content of the location information.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Sang Bum
• Kim Soeng Hun
• Jeong Kyeong In

Classifications

• H04W74/0833 Primary

  Random access procedures, e.g. with 4-step access · CPC title

• H04W24/10 Primary

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04W74/08

  Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W28/00

  Network traffic management; Network resource management · CPC title