Accessing failure event reporting method, user equipment, method for adjusting access control mechanism, control node

Patent metadata

Field	Value
Publication number	US-2016165473-A1
Application number	US-201514951519-A
Country	US
Kind code	A1
Filing date	Nov 25, 2015
Priority date	Dec 8, 2014
Publication date	Jun 9, 2016
Grant date	—

Abstract

An accessing failure event reporting method, UE, a method for adjusting access control mechanism and a control node are proposed. The accessing failure event reporting method includes: receiving a configuration signal when the UE is preparing into idle mode; performing an accessibility measurement of a GBR mechanism in response to the configuration signal. The accessibility measurement includes: attempting to establish a GBR traffic connection; recording at least one accessing failure event if the UE fails to establish the GBR traffic connection; and reporting the at least one accessing failure event.

First claim

What is claimed is:

1 . An accessing failure event reporting method, adapted to user equipment (UE), comprising:
receiving a configuration signal when the UE is preparing into idle mode; performing an accessibility measurement of a guaranteed bit rate (GBR) mechanism in response to the configuration signal, wherein the accessibility measurement comprises:
attempting to establish a GBR traffic connection;
recording at least one accessing failure event if the UE fails to establish the GBR traffic connection; and
reporting the at least one accessing failure event.

2 . The method of claim 1 , wherein the configuration signal is sent by a control node and is dedicated to request the UE to perform the accessibility measurement.

3 . The method of claim 1 , wherein the at least one access failure event comprises a barred event, and the step of attempting to establish the GBR traffic connection further comprises:
performing a access class barring (ACB) check; if the UE fails to establish the GBR traffic connection, the step of recording the at least one accessing failure event comprises: recording the barred event if the UE fails to pass the ACB check.

4 . The method of claim 3 , wherein the step of reporting the at least one accessing failure event further comprises:
reporting a serving cell identification, a GBR traffic type, a location, a time stamp and a number of the barred event if a radio resource control (RRC) connection is available; and clearing the at least one accessing failure event after reporting.

5 . The method of claim 3 , wherein the step of reporting the at least one accessing failure event further comprises:
sending a dedicated preamble without passing the ACB check if a number of the barred event reaches a predetermined threshold, wherein the dedicated preamble is used to announce that the at least one accessing failure event exists and is shared by the UE and other user equipments; and clearing the at least one accessing failure event and returning to the idle mode.

6 . The method of claim 5 , further comprising:
clearing the at least one accessing failure event after the UE experiences a cell-reselection.

7 . The method of claim 1 , wherein the at least one access failure event comprises a random access (RA) failure event, and the step of attempting to establish the GBR traffic connection further comprises:
sending a radio resource control (RRC) connection request message and starting a timer; and if the UE fails to establish the GBR traffic connection, the step of recording the at least one accessing failure event comprises: recording the RA failure event if the UE fails to receive a RRC connection setup message before the timer expires.

8 . The method of claim 7 , wherein the step of sending the RRC connection request message and starting the timer further comprising:
sending the RRC connection request message and starting the timer after the UE passes a access class barring (ACB) check.

9 . The method of claim 7 , wherein the RA failure event is configured with a GBR traffic type, and the step of reporting the at least one accessing failure event further comprising:
reporting the RA failure event and historical RA failure events if a RRC connection is available.

10 . A user equipment (UE), comprising:
a storage circuit, storing a plurality of modules; a transceiver; and a processor, operatively coupled to the storage circuit and the transceiver, accessing and executing the modules, wherein the modules comprises: a receiving module, controlling the transceiver to receive a configuration signal when the UE is preparing into idle mode; and a measuring module, performing an accessibility measurement of a guaranteed bit rate (GBR) mechanism in response to the configuration signal, wherein the accessibility measurement comprises: controlling the transceiver to attempt to establish a GBR traffic connection; recording at least one accessing failure event if the UE fails to establish the GBR traffic connection; and controlling the transceiver to report the at least one accessing failure event.

11 . The UE of claim 10 , wherein the configuration signal is sent by a control node and is dedicated to request the UE to perform the accessibility measurement.

12 . The UE of claim 10 , wherein the at least one access failure event comprises a barred event, and the measuring module is further configured to:
perform a access class barring (ACB) check; and recording the barred event if the UE fails to pass the ACB check.

13 . The UE of claim 12 , wherein the measuring module is further configured to:
control the transceiver to report a serving cell identification, a GBR traffic type, a location, a time stamp and a number of the barred event if a radio resource control (RRC) connection is available; and clear the at least one accessing failure event after reporting.

14 . The UE of claim 12 , wherein the measuring module is configured to:
control the transceiver to send a dedicated preamble without passing the ACB check if a number of the barred event reaches a predetermined threshold, wherein the dedicated preamble is used to announce that the at least one accessing failure event exists and is shared by the UE and other UEs; and clear the at least one accessing failure event and returning to the idle mode.

15 . The UE of claim 12 , wherein the measuring module is further configured to:
clear the at least one accessing failure event after the UE experiences a cell-reselection.

16 . The UE of claim 10 , wherein the at least one access failure event comprises a random access (RA) failure event, and the measuring module is further configured to:
record the RA failure event if the transceiver of the UE fails to receive a RRC connection setup message before a timer expires.

17 . The UE of claim 16 , wherein the RA failure event is configured with a GBR traffic type, and the measuring module is further configured to:
report the RA failure event and historical RA failure events if a RRC connection is available.

18 . A method for adjusting access control mechanism, adapted to a control node, comprising:
sending a configuration signal to user equipment (UE) being preparing into idle mode to request the UE to perform an accessibility measurement of a guaranteed bit rate (GBR) mechanism and to report at least one accessing failure event recorded in the accessibility measurement; receiving the at least one accessing failure event from the UE; and adjusting an access control mechanism based on the at least one accessing failure event.

19 . The method of claim 18 , wherein the at least one accessing failure event comprises a barred event representing that the UE fails to pass a access class barring (ACB) check, and the step of receiving the at least one accessing failure event from the UE further comprises:
receiving a serving cell identification, a GBR traffic type, a location, a time stamp and a number of the barred event if a radio resource control (RRC) connection between the UE and the control node is available.

20 . The method of claim 18 , wherein the at least one accessing failure event comprises a barred event representing that the UE fails to pass a access class barring (ACB) check, and the step of receiving the at least one accessing failure event from the UE further comprises:
receiving a dedicated preamble from the UE failing to pass the ACB check, wherein the dedicated preamble is used to announce that the at least

Assignees

• Ind Tech Res Inst

Inventors

• Lin Jung-Mao

Classifications

• H04W24/10 Primary

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

• H04W74/0833

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

• H04W76/046

  Electricity · mapped topic

• H04L43/0811

  by checking connectivity · CPC title

• H04L12/1403 Primary

  Architecture for metering, charging or billing · CPC title