CELL MEASUREMENT METHOD, CELL RESOURCE SHARING METHOD, AND RELATED DEVICE

• US 20140112184A1
• Filed: 12/30/2013
• Published: 04/24/2014
• Est. Priority Date: 07/12/2011
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: CHAI, Li
• Granted Patent: US 10,084,651 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0077 Cooperative coding
• CPC Class Codes: H04L 25/0226 sounding signals per se
• CPC Class Codes: H04L 41/0853 by actively collecting configuration information or by backing up configuration information
• CPC Class Codes: H04L 5/0035 Resource allocation in a cooperative multipoint environment
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 36/0083 Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
• CPC Class Codes: H04W 36/0085 Hand-off measurements

Abstract

Disclosed are a cell measurement method, a cell resource sharing method, and a related device. The cell measurement method includes: a user equipment receives a measurement configuration message sent by a base station, wherein the measurement configuration message comprises at least one physical cell identity and CSI-RS configuration information corresponding to a measured cell, and wherein the physical cell identity is used to indicate the measured cell; measuring the CSI-RS corresponding to the measured cell according to the CSI-RS configuration information, and obtaining a measurement result of the measuring; sending the obtained measurement result of the measured cell and measurement object information of the measured cell to the base station via a measurement report. The technical solution provided by the present invention can effectively improve the accuracy of the measurement result, and enable the base station to distinguish different measurement results corresponding to different cells.

Claims

1. A cell measurement method, comprising:

receiving, by a user equipment (UE), a measurement configuration message sent by a base station, wherein the measurement configuration message comprises at least one physical cell identity and channel state information-reference signal (CSI-RS) configuration information corresponding to a measured cell, and wherein the physical cell identity is used to indicate the measured cell;

measuring the CSI-RS corresponding to the measured cell according to the CSI-RS configuration information, and obtaining a measurement result of the measuring;

sending the obtained measurement result of the measured cell and measurement object information of the measured cell to the base station via a measurement report.

2. The method according to claim 1, wherein:

the CSI-RS configuration information of different measured cells, which are indicated by the same physical cell identity in the measurement configuration message, is different;

the measurement configuration message further comprises a configuration identity which is in one to one correspondence with the measured cell;

if there are same physical cell identities in the measurement configuration message, the measuring the CSI-RS corresponding to the measured cell according to the CSI-RS configuration information comprises;

distinguishing the different measured cells indicated by the same physical cell identity, according to the CSI-RS configuration information and/or the configuration identity of the measured cells.

3. The method according to claim 2, wherein:

the configuration identity comprises at least one of;

antenna port information of an access point to which the measured cell belongs, and a configuration index number of the CSI-RS configuration information of the measured cell, wherein, the antenna port information comprises an antenna port number and/or an amount of antenna ports.

4. The method according to claim 1, wherein:

the measurement object information comprises at least one of;

the CSI-RS configuration information of the measured cell, antenna port information of an access point to which the measured cell belongs, and a cell number of the measured cell, wherein, the antenna port information comprises an antenna port number and/or an amount of antenna ports.

5. The method according to claim 1, wherein:

the measurement configuration message further comprises measurement reporting mode indication information, wherein the measurement reporting mode indication information is used to indicate the user equipment to perform measurement reporting for the measured cell periodically or based on event;

if the measurement reporting mode indication information indicates the user equipment to perform the measurement reporting for the measured cell periodically, the measurement result comprises channel state information—

reference signal received power (CSI-RSRP), and/or, channel state information—

reference signal received quality (CSI-RSRP),

and/or,

if the measurement reporting mode indication information is used to indicate the user equipment to perform the measurement reporting for the measured cell based on event, the measurement result comprises at least one of;

CSI-RSRP, CSI-RSRP, and measurement event indication information, wherein, the measurement event indication information is used to indicate that the measured cell is a cell which satisfies a condition of joining a coordinated multi-point transmission (CoMP) measurement set, or satisfies a condition of leaving a CoMP measurement set.

6. The method according to claim 5, wherein:

if the measurement reporting mode indication information is used to indicate the user equipment to perform the measurement reporting for the measured cell based on event, the obtaining the measurement result of the measuring comprises;

obtaining the CSI-RSRP and/or the CSI-RSRP of the measured cell;

calculating a cell which satisfies the condition of joining the CoMP measurement set according to the obtained CSI-RSRP and/or CSI-RSRP of the measured cell;

and the sending the obtained measurement result of the measured cell and the measurement object information indicating the measured cell via the measurement report to the base station comprises;

sending the obtained measurement result of the measured cell which satisfies the condition of joining the CoMP measurement set and the measurement object information indicating the measured cell via the measurement report to the base station.

7. The method according to claim 5, wherein:

if the measurement reporting mode indication information is used to indicate the user equipment to perform the measurement reporting for the measured cell based on event, the obtaining the measurement result of the measuring comprises;

obtaining the CSI-RSRP and/or the CSI-RSRP of the measured cell;

calculating a cell which satisfies the condition of leaving the CoMP measurement set according to the obtained CSI-RSRP and/or CSI-RSRP of the measured cell; and

and the sending the obtained measurement result of the measured cell and the measurement object information indicating the measured cell via the measurement report to the base station comprises;

sending the obtained measurement result of the measured cell which satisfies the condition of leaving the CoMP measurement set and the measurement object information indicating the measured cell to the base station via the measurement report to the base station.

8. The method according to claim 1, wherein:

the measurement configuration message further comprises CSI-RSRP measurement indication information and/or CSI-RSRQ measurement indication information, wherein the CSI-RSRP measurement indication information is used to indicate the UE to obtain CSI-RSRP of the measured cell, and the CSI-RSRQ measurement indication information is used to indicate the UE to obtain CSI-RSRQ of the measured cell.

9. The method according to claim 1, wherein:

the measurement configuration message is a radio resource control (RRC) signaling or a media access control (MAC) signaling.

10. A cell measurement method, comprising:

sending, by a base station, a measurement configuration message to a user equipment, wherein the measurement configuration message comprises at least one physical cell identity and channel state information—

reference signal (CSI-RS) configuration information corresponding to a measured cell, wherein the physical cell identity is used to indicate the measured cell, and receiving a measurement report obtained by the user equipment according to the measurement configuration message;

updating a coordinated multi-point transmission (CoMP) measurement set of the user equipment according to the measurement report, and sending the updated CoMP measurement set to the user equipment.

11. The method according to claim 10, wherein:

the CSI-RS configuration information of different measured cells, which are indicated by the same physical cell identity in the measurement configuration message, is different;

the measurement configuration message further comprises a configuration identity which is in one to one correspondence with the measured cell.

12. The method according to claim 11, wherein:

the configuration identity comprises at least one of;

antenna port information of an access point to which the measured cell belongs, and configuration index number of the CSI-RS configuration information of the measured cell, wherein, the antenna port information comprises an antenna port number and/or an amount of antenna ports.

13. The method according to claim 10, wherein:

the measurement configuration message further comprises measurement reporting mode indication information, wherein the measurement reporting mode indication information is used to indicate the user equipment to perform measurement reporting for the measured cell periodically or based on event.

14. The method according to claim 10, wherein:

the measurement configuration message further comprises CSI-RSRP measurement indication information and/or CSI-RSRQ measurement indication information, wherein the CSI-RSRP measurement indication information is used to indicate the UE to obtain CSI-RSRP of the measured cell, and the CSI-RSRQ measurement indication information is used to indicate the UE to obtain CSI-RSRQ of the measured cell.

15. The method according to claim 10, wherein:

the measurement configuration message is a radio resource control (RRC) signaling or a media access control (MAC) signaling.

16. The method according to claim 10, wherein after the receiving the measurement report from the UE, the method further comprises:

using the measurement report to perform a mobility management.

17. A user equipment, comprising:

a receiving unit, configured to receive a measurement configuration message sent by a base station, wherein the measurement configuration message comprises at least one physical cell identity, and channel state information—

reference signal (CSI-RS) configuration information corresponding to a measured cell, and wherein the physical cell identity is used to indicate the measured cell;

a measuring and obtaining unit, configured to measure the CSI-RS corresponding to the measured cell according to the CSI-RS configuration information in the measurement configuration message received by the receiving unit, and obtaining a measurement result of the measuring;

a sending unit, configured to send the measurement result of the measured cell obtained by the measuring and obtaining unit and measurement object information indicating the measured cell, to the base station via a measurement report.

18. The user equipment according to claim 17, wherein:

a configuration identity, which is in the measurement configuration message received by the receiving unit, comprises at least one of;

antenna port information of an access point to which the measured cell belongs, and configuration index number of the CSI-RS configuration information of the measured cell, wherein, the antenna port information comprises an antenna port number and/or an amount of antenna ports.

19. The user equipment according to claim 17, wherein:

the measurement object information, which is in the measurement report sent to the base station by the sending unit, comprises at least one of;

the CSI-RS configuration information of the measured cell, antenna port information of an access point to which the measured cell belongs, and a cell number of the measured cell, wherein, the antenna port information comprises an antenna port number and/or an amount of antenna ports.

20. The user equipment according to claim 17, wherein:

the measurement configuration message received by the receiving unit, further comprises measurement reporting mode indication information, wherein the measurement reporting mode indication information is used to indicate the user equipment to perform measurement reporting for the measured cell periodically or based on event;

the measuring and obtaining unit is specifically configured to obtain a measurement result comprising channel state information—

reference signal received power (CSI-RSRP), and/or, channel state information—

reference signal received quality (CSI-RSRP), according to the measurement reporting mode indication information which is received by the receiving unit and indicates the user equipment to perform the measurement reporting for the measured cell periodically,

and/or,

the measuring and obtaining unit is specifically configured to obtain a measurement result comprising CSI-RSRP and/or CSI-RSRP and/or measurement event indication information, according to the of measurement reporting mode indication information which is received by the receiving unit and indicates the user equipment to perform the measurement reporting for the measured cell based on event, wherein, the measurement event indication information is used to indicate that the measured cell is a cell which satisfies a condition of joining a coordinated multi-point transmission (CoMP) measurement set, or satisfies a condition of leaving a CoMP measurement set.

21. A base station, comprising:

a transceiving unit, configured to send a measurement configuration message to a user equipment, wherein the measurement configuration message comprises at least one physical cell identity and channel state information-reference signal (CSI-RS) configuration information corresponding to a measured cell, wherein the physical cell identity is used to indicate the measured cell; and

to receive a measurement report obtained by the user equipment according to the measurement configuration message;

an updating unit, configured to update a coordinated multi-point transmission (CoMP) measurement set of the user equipment according to the measurement report received by the transceiving unit;

and the transceiving unit is further configured to send the CoMP measurement set updated by the updating unit to the user equipment.

22. The base station according to claim 21, wherein:

the measurement configuration message sent by the transceiving unit further comprises CSI-RSRP measurement indication information and/or CSI-RSRQ measurement indication information, wherein the CSI-RSRP measurement indication information is used to indicate the UE to obtain CSI-RSRP of the measured cell, and the CSI-RSRQ measurement indication information is used to indicate the UE to obtain CSI-RSRQ of the measured cell.