Method and system for processing measurement event in multi-carrier system

• US 9,380,482 B2
• Filed: 10/22/2010
• Issued: 06/28/2016
• Est. Priority Date: 05/06/2010
• Status: Active Grant

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Huang, Yada
• Primary Examiner(s): Wong, Xavier Szewai
• Assistant Examiner(s): Ayikoe, Edem A.
• Application Number:
  US13/696,295
• Publication Number:
  US 20130058244A1
• Time in Patent Office: 2,076 Days
• US Class Current: 1/1
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0058 Transmission of hand-off measurement information, e.g. measurement reports
• CPC Class Codes: H04W 36/0085 Hand-off measurements
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

The present invention provides a method and a system for processing a measurement event in a multi-carrier system. The method for processing a measurement event in a multi-carrier system comprises: a mobile terminal receives a measurement assignment configured and transmitted by a network side device (S302); the mobile terminal determines a serving cell and a neighbor cell corresponding to the received measurement assignment (S304); the mobile terminal measures the determined serving cell and neighbor cell (S306); and when a measurement result meets a report condition of a measurement event corresponding to the received measurement assignment, the mobile terminal reports the measurement result (S308). By configuring measurement events and assignments for different serving cells, the present invention solves the problem that a measurement event cannot distinguish between a primary serving cell and a secondary serving cell in the conventional art, thus the mobile terminal can implement measurement and reporting under the configuration of multiple serving cells.

Claims

1. A method for processing a measurement event in a multi-carrier system, comprising:

a mobile terminal receives a measurement assignment which is configured and transmitted by a network side device;

the mobile terminal determines a neighbor cell and a serving cell corresponding to the received measurement assignment, and the mobile terminal measures the determined neighbor cell and serving cell; and

when a measurement result meets a report condition of a measurement event corresponding to the received measurement assignment, the mobile terminal reports the measurement result;

wherein the step of the mobile terminal determining a neighbor cell and a serving cell corresponding to the received measurement assignment comprises;

when a measurement event corresponding to the measurement assignment is a first measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the first measurement event can only be identified by an advanced long-term evolution (LTE-A) device; and

when a measurement event corresponding to the measurement assignment is a second measurement event and the mobile terminal works in the multi-carrier aggregation state, the serving cell corresponding to the measurement assignment is a secondary serving cell, wherein the second measurement event can be identified by a long-term evolution (LTE) device and an LTE-A device;

or

wherein the step of the mobile terminal determining a neighbor cell and a serving cell corresponding to the received measurement assignment comprises;

when the received measurement assignment is a measurement assignment of a first kind, the serving cell corresponding to the measurement assignment is a primary serving cell;

when the received measurement assignment is a measurement assignment of a second kind, the serving cell corresponding to the measurement assignment is a secondary serving cell;

wherein the network side device configures the measurement assignment of the first kind related to the primary serving cell and the measurement assignment of the second kind related to the secondary serving cell according to the measurement event, the measurement event corresponding to the measurement assignment of the first kind can be identified by an LTE device and an LTE-A device, and the measurement event corresponding to the measurement assignment of the second kind can only be identified by an LTE-A device;

or

wherein the step of the mobile terminal determining a neighbor cell and a serving cell corresponding to the received measurement assignment comprises;

when a measurement event corresponding to the measurement assignment is a third measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the third measurement event can only be identified by an LTE-A device;

when a measurement event corresponding to the measurement assignment is a fourth measurement event, and a primary serving cell or a secondary serving cell exists on the frequency at which a measurement object of the measurement assignment is, the serving cell corresponding to the measurement assignment device is the existing primary serving cell or secondary serving cell;

when a measurement event corresponding to the measurement assignment is the fourth measurement event, and the primary serving cell and the secondary serving cell do not exist on the frequency at which the measurement object of the measurement assignment is, the serving cell corresponding to the measurement assignment is the primary serving cell,

wherein the fourth measurement event can be identified by an LTE device and an LTE-A device;

or

wherein the step of the mobile terminal determining a neighbor cell and a serving cell corresponding to the received measurement assignment comprises;

when a measurement corresponding to the measurement assignment is a fifth measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the fifth measurement event can be identified by an LTE device and an LTE-A device; and

when a measurement event corresponding to the measurement assignment is a sixth measurement event, the serving cell corresponding to the measurement assignment is a secondary serving cell, wherein the sixth measurement event can only be identified by an LTE-A device.

2. The method according to claim 1, wherein the serving cell is a primary serving cell or a secondary serving cell.

3. The method according to claim 1, wherein the step of the mobile terminal determining a neighbor cell and a serving cell corresponding to the received measurement assignment comprises:

when a measurement event corresponding to the measurement assignment is a first measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the first measurement event can only be identified by an advanced long-term evolution (LTE-A) device; and

when a measurement event corresponding to the measurement assignment is a second measurement event and the mobile terminal works in the multi-carrier aggregation state, the serving cell corresponding to the measurement assignment is a secondary serving cell, wherein the second measurement event can be identified by a long-term evolution (LTE) device and an LTE-A device.

4. The method according to claim 3, wherein a measurement object of the measurement assignment corresponding to the second measurement event is at the same frequency with the secondary serving cell;

and when a measurement event corresponding to the measurement assignment is a second measurement event and the mobile terminal works in the single carrier aggregation state, the serving cell corresponding to the measurement assignment is a primary serving cell.

5. The method according to claim 3, wherein the method further comprises the steps that:

the mobile terminal receives a reconfiguration message transmitted by the network side device; and

when the mobile terminal is configured from multi-carrier to single carrier, the measurement assignment corresponding to the second measurement event is deleted;

or

when the mobile terminal is configured from single carrier to multi-carrier, a measurement assignment corresponding to the second measurement event is added according to the reconfiguration message indication.

6. The method according to claim 5, wherein after the mobile terminal receives a reconfiguration message transmitted by the network side device, the method further comprises:

when the mobile terminal is configured from multi-carrier to single carrier, the second measurement event is modified to the first measurement event.

7. The method according to claim 1, wherein the step of the mobile terminal determining a neighbor cell and a serving cell corresponding to the received measurement assignment comprises:

when the received measurement assignment is a measurement assignment of a first kind, the serving cell corresponding to the measurement assignment is a primary serving cell;

when the received measurement assignment is a measurement assignment of a second kind, the serving cell corresponding to the measurement assignment is a secondary serving cell,

wherein the network side device configures the measurement assignment of the first kind related to the primary serving cell and the measurement assignment of the second kind related to the secondary serving cell according to the measurement event, the measurement event corresponding to the measurement assignment of the first kind can be identified by an LTE device and an LTE-A device, and the measurement event corresponding to the measurement assignment of the second kind can only be identified by an LTE-A device.

8. The method according to claim 7, wherein the method further comprises the steps that:

the mobile terminal receives a reconfiguration message transmitted by the network side device; and

when the mobile terminal is configured from multi-carrier to single carrier, the measurement assignment of the second kind is deleted;

or

when the mobile terminal is configured from single carrier to multi-carrier, the measurement assignment of the second kind is added according to the reconfiguration message indication.

9. The method according to claim 1, wherein in the step of the mobile terminal determining a neighbor cell and a serving cell corresponding to the received measurement assignment:

when a measurement event corresponding to the measurement assignment is a third measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the third measurement event can only be identified by an LTE-A device;

when a measurement event corresponding to the measurement assignment is a fourth measurement event, and a primary serving cell or a secondary serving cell exists on the frequency at which a measurement object of the measurement assignment is, the serving cell corresponding to the measurement assignment is the existing primary serving cell or secondary serving cell;

when a measurement event corresponding to the measurement assignment is the fourth measurement event, and the primary serving cell and the secondary serving cell do not exist on the frequency at which the measurement object of the measurement assignment is, the serving cell corresponding to the measurement assignment is the primary serving cell,

wherein the fourth measurement event can be identified by an LTE device and an LTE-A device.

10. The method according to claim 1, wherein in the step of the mobile terminal determining a neighbor cell and a serving cell corresponding to the received measurement assignment:

when a measurement event corresponding to the measurement assignment is a fifth measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the fifth measurement event can be identified by an LTE device and a LTE-A device; and

when a measurement event corresponding to the measurement assignment is a sixth measurement event, the serving cell corresponding to the measurement assignment is a secondary serving cell, wherein the sixth measurement event can only be identified by an LTE-A device.

11. The method according to claim 10, wherein when the measurement event corresponding to the measurement assignment is the sixth measurement event, the measurement object corresponding to the measurement assignment is at the same frequency as the secondary serving cell;

and

wherein when the wireless signal quality of the neighbor cell becomes higher than the wireless signal quality of the serving cell, the measurement event is triggered.

12. The method according to claim 11, wherein after the measurement event is triggered, the method further comprises:

when a measurement result of the measurement event meets a report condition, the mobile terminal reports the measurement result.

13. A system for processing a measurement event in a multi-carrier system, comprising a network side device and a mobile terminal, wherein

the network side device comprises:

a configuring processor, configured to configure a measurement assignment of a primary serving cell and a measurement assignment of a secondary serving cell; and

a first transmitting processor, connected with the configuring processor and configured to transmit the configured measurement assignments to a mobile terminal, for the mobile terminal to measure and report;

wherein the mobile terminal comprises;

a receiving processor, configured to receive the configured measurement assignments transmitted by the first transmitting processor;

an acquiring processor, connected with the receiving processor and configured to acquire a neighbour cell and a serving cell corresponding to the received measurement assignments;

a measuring processor, connected with the acquiring processor and configured to measure the determined neighbour cell and serving cell; and

a second transmitting processor, connected with the measuring processor and configured to report a measurement result when the measurement result meets a report condition of the event corresponding to the received measurement assignment;

wherein the acquiring processor acquiring the neighbor cell and the serving cell corresponding to the received measurement assignments comprises;

when a measurement event corresponding to the measurement assignment is a first measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the first measurement event can only be identified by an advanced long-term evolution (LTE-A) device; and

when a measurement event corresponding to the measurement assignment is a second measurement event and the mobile terminal works in the multi-carrier aggregation state, the serving cell corresponding to the measurement assignment is a secondary serving cell, wherein the second measurement event can be identified by a long-term evolution (LTE) device and an LTE-A device;

or,

wherein the acquiring processor acquiring the neighbor cell and the serving cell corresponding to the received measurement assignments comprises;

when the received measurement assignment is a measurement assignment of a first kind, the serving cell corresponding to the measurement assignment is a primary serving cell;

when the received measurement assignment is a measurement assignment of a second kind, the serving cell corresponding to the measurement assignment is a secondary serving cell;

wherein the network side device configures the measurement assignment of the first kind related to the primary serving cell and the measurement assignment of the second kind related to the secondary serving cell according to the measurement event, the measurement event corresponding to the measurement assignment of the first kind can be identified by an LTE device and an LTE-A device, and the measurement event corresponding to the measurement assignment of the second kind can only be identified by an LTE-A device;

or,

wherein the acquiring processor acquiring the neighbor cell and the serving cell corresponding to the received measurement assignments comprises;

when a measurement event corresponding to the measurement assignment is a third measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the third measurement event can only be identified by an LTE-A device;

when a measurement event corresponding to the measurement assignment is a fourth measurement event, and a primary serving cell or a secondary serving cell exists on the frequency at which a measurement object of the measurement assignment is, the serving cell corresponding to the measurement assignment is the existing primary serving cell or secondary serving cell;

when a measurement event corresponding to the measurement assignment is the fourth measurement event, and the primary serving cell and the secondary serving cell do not exist on the frequency at which the measurement object of the measurement assignment is, the serving cell corresponding to the measurement assignment is the primary serving cell,

wherein the fourth measurement event can be identified by an LTE device and an LTE-A device;

or,

wherein the acquiring processor acquiring the neighbor cell and the serving cell corresponding to the received measurement assignments comprises;

when a measurement event corresponding to the measurement assignment is a fifth measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the fifth measurement event can be identified by an LTE device and a LTE-A device; and

when a measurement event corresponding to the measurement assignment is a sixth measurement event, the serving cell corresponding to the measurement assignment is a secondary serving cell, wherein the sixth measurement event can only be identified by an LTE-A device.

14. The system according to claim 13, wherein the acquiring processor acquiring the neighbor cell and the serving cell corresponding to the received measurement assignments comprises:

when a measurement event corresponding to the measurement assignment is a first measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the first measurement event can only be identified by an advanced long-term evolution (LTE-A) device; and

when a measurement event corresponding to the measurement assignment is a second measurement event and the mobile terminal works in the multi-carrier aggregation state, the serving cell corresponding to the measurement assignment is a secondary serving cell, wherein the second measurement event can be identified by a long-term evolution (LTE) device and an LTE-A device.

15. The system according to claim 13, wherein the acquiring processor acquiring the neighbor cell and the serving cell corresponding to the received measurement assignments comprises:

when the received measurement assignment is a measurement assignment of a first kind, the serving cell corresponding to the measurement assignment is a primary serving cell;

when the received measurement assignment is a measurement assignment of a second kind, the serving cell corresponding to the measurement assignment is a secondary serving cell;

wherein the network side device configures the measurement assignment of the first kind related to the primary serving cell and the measurement assignment of the second kind related to the secondary serving cell according to the measurement event, the measurement event corresponding to the measurement assignment of the first kind can be identified by an LTE device and an LTE-A device, and the measurement event corresponding to the measurement assignment of the second kind can only be identified by an LTE-A device.

16. The system according to claim 13, wherein the acquiring processor acquiring the neighbor cell and the serving cell corresponding to the received measurement assignments comprises:

when a measurement event corresponding to the measurement assignment is a third measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the third measurement event can only be identified by an LTE-A device;

when a measurement event corresponding to the measurement assignment is a fourth measurement event, and a primary serving cell or a secondary serving cell exists on the frequency at which a measurement object of the measurement assignment is, the serving cell corresponding to the measurement assignment is the existing primary serving cell or secondary serving cell;

when a measurement event corresponding to the measurement assignment is the fourth measurement event, and the primary serving cell and the secondary serving cell do not exist on the frequency at which the measurement object of the measurement assignment is, the serving cell corresponding to the measurement assignment is the primary serving cell,

wherein the fourth measurement event can be identified by an LTE device and an LTE-A device.

17. The system according to claim 13, wherein the acquiring processor acquiring the neighbor cell and the serving cell corresponding to the received measurement assignments comprises:

when a measurement event corresponding to the measurement assignment is a fifth measurement event, the serving cell corresponding to the measurement assignment is a primary serving cell, wherein the fifth measurement event can be identified by an LTE device and a LTE-A device; and

when a measurement event corresponding to the measurement assignment is a sixth measurement event, the serving cell corresponding to the measurement assignment is a secondary serving cell, wherein the sixth measurement event can only be identified by an LTE-A device.