CSI-RSRP measurement period configuration method and terminal

Patent metadata

Field	Value
Publication number	US-9629016-B2
Application number	US-201314404484-A
Country	US
Kind code	B2
Filing date	Sep 16, 2013
Priority date	Sep 17, 2012
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A method for configuring a channel state information reference signal (CSI-RS) received power (CSI-RSRP) measurement period is provided. The method includes: a terminal in a discontinuous reception (DRX) state setting the measurement period in the following way: T=N×Max (P DRX , Pcsi-rs) and T>=200 milliseconds, or T=N×Max (P DRX , 0.08 seconds) and T>=200 milliseconds, or T=N×LCM (P DRX , Pcsi-rs) and T>=200 milliseconds; wherein T is the measurement period, N is a natural number, Pcsi-rs is a transmission period of the CSI-RS, the P DRX is a DRX period of the terminal, the Max (P DRX , Pcsi-rs) represents selecting the maximum value of the P DRX and the Pcsi-ars, the Max (P DRX , 0.08 seconds) represents selecting the maximum value of the P DRX and 0.08 seconds, and the LCM (P DRX , Pcsi-rs) represents the least common multiple of the P DRX and the Pcsi-rs.

First claim

What we claim is:

1. A method for configuring a channel state information reference signal (CSI-RS) received power (CSI-RSRP) measurement period, comprising:
setting a CSI-RSRP measurement period by a terminal in a discontinuous reception (DRX) state comprising at least following features:
setting a measurement period as an integral multiple of a maximum of a DRX period of the terminal and 0.08 seconds, and the measurement period is more than or equal to 200 milliseconds; or
setting a measurement period as an integral multiple of a least common multiple of a DRX period of the terminal and a transmission period of CSI-RS, and the measurement period is more than or equal to 200 milliseconds;
measuring, by the terminal, a CSI-RSRP as per the set measurement period according to the CSI-RS.

2. The method according to claim 1 , wherein
the terminal measuring the CSI-RSRP as per the measurement period according to the CSI-RS comprises:
the terminal measuring the CSI-RSRP according to CSI-RS of one or more subframes in one measurement period.

3. The method according to claim 1 , wherein after the terminal measures the CSI-RSRP, the method further comprises:
the terminal reporting CSI-RSRP information to a current serving base station of the terminal according to a period reporting way, preferably a period for reporting the CSI-RSRP information is equal to the measurement period;
or
the terminal reporting CSI-RSRP information to a current serving base station of the terminal according to a triggering reporting way.

4. The method according to claim 1 , wherein
the terminal measuring the CSI-RSRP as per the set measurement period according to the CSI-RS comprises:
the terminal measuring the CSI-RSRP as per the measurement period according to a CSI-RS sent by a base station.

5. The method according to claim 4 , wherein
the terminal measuring the CSI-RSRP as per the measurement period according to the CSI-RS sent by the base station comprises:
the terminal measuring the CSI-RSRP as per the measurement period according to a CSI-RS sent by a base station which configures a CSI-RS signal related to the terminal.

6. The method according to claim 2 , wherein
a frequency domain bandwidth of the CSI-RS>=6PRB; or
a frequency domain bandwidth of the CSI-RS is a system bandwidth of the base station signal.

7. The method according to claim 4 , wherein
the terminal measuring the CSI-RSRP as per the measurement period according to the CSI-RS sent by the base station comprises:
the terminal measuring and obtaining the CSI-RSRP according to a CSI-RS of a single antenna port configured by the base station; or
the terminal measuring and obtaining CSI-RSRPs according to CSI-RSs of 2 antenna ports configured by the base station respectively, and taking a sum of two obtained CSI-RSRPs as a measured CSI-RSRP; or
the terminal measuring and obtaining CSI-RSRPs according to CSI-RSs of 2 antenna ports configured by the base station respectively, and taking a mean value of two obtained CSI-RSRPs as a measured CSI-RSRP.

8. The method according to claim 1 , wherein
when the measurement period is set as: the measurement period being an integral multiple of a maximum of the DRX period of the terminal and the transmission period of CSI-RS and the measurement period being more than or equal to 200 milliseconds, a preferred value of the measurement period T is any one of following situations:
when P DRX <=40 ms and Pcsi-rs=5, 10, 20 or 40 subframes or ms, the T is preferably 200 or 400 ms;
when 40 ms<P DRX <=80 ms and Pcsi-rs=5, 10, 20 or 40 subframes or ms, the T is preferably 320 or 640 ms;
when P DRX <=80 ms and Pcsi-rs=80 subframes or ms, the T is preferably 400 or 800 ms;
when 80 ms<P DRX <=120 ms and Pcsi-rs=5, 10, 20 or 40 subframes or ms, the T is preferably 5*P DRX ;
when 80 ms<P DRX <=120 ms and Pcsi-rs=80 subframes or ms, P DRX <=T<=10*P DRX ;
when P DRX <=40 ms and Pcsi-rs<=40 subframes or ms, the T is preferably 400 ms;
when 40 ms<P DRX <=80 ms and Pcsi-rs<=40 subframes or ms, the T is preferably 640 ms;
when P DRX <=80 ms and Pcsi-rs=80 subframes or ms, the T is preferably 800 ms;
when 80 ms<P DRX <=120 ms and Pcsi-rs<=40 subframes or ms, the T is preferably 5*P DRX ; and
when P DRX >120 ms, the T is preferably 5*P DRX ,
wherein the T is the measurement period, Pcsi-rs is the transmission period of CSI-RS and P DRX is a DRX period of the terminal.

9. The method according to claim 1 , wherein
when the measurement period is set as: the measurement period being an integral multiple of a maximum of a DRX period of the terminal and 0.08 seconds and the measurement period being more than or equal to 200 milliseconds, a preferred value of the measurement period T is any one of following situations:
when P DRX >0.08 s, the T is preferably 5*P DRX ; and
when P DRX <=0.08 s, the T is preferably 0.4 seconds,
wherein the T is the measurement period and P DRX is a DRX period of the terminal.

10. A terminal, in a discontinuous reception (DRX) state, the terminal comprising hardware performing instructions stored in a non-transitory computer readable medium which executes steps in a following module:
a setting module, configured to set a CSI-RSRP measurement period which comprises at least following features:
a measurement period is an integral multiple of a maximum of a DRX period of the terminal and 0.08 seconds, and the measurement period is more than or equal to 200 milliseconds; or
a measurement period is an integral multiple of a least common multiple of a DRX period of the terminal and a transmission period of CSI-RS, and the measurement period is more than or equal to 200 milliseconds;
a measurement module, configured to measure a CSI-RSRP as per the measurement period set by the setting module according to a channel state information reference signal (CSI-RS).

11. The terminal according to claim 10 , wherein
the measurement module is configured to: measure the CSI-RSRP according to CSI-RS of one or more subframes in one measurement period.

12. The terminal according to claim 10 , wherein the hardware further performs instructions stored in a non-transitory computer readable medium which executes steps in a following module:
a reporting module, configured to: report CSI-RSRP information measured by the measurement module to a current serving base station of the terminal according to a period reporting way, preferably a period for reporting the CSI-RSRP information is equal to the measurement period;
or
a reporting module, configured to: report CSI-RSRP information measured by the measurement module to a current serving base station of the terminal according to a triggering reporting way.

13. The terminal according to claim 10 , wherein
the measurement module is configured to: measure the CSI-RSRP as per the measurement period according to a CSI-RS sent by a base station.

14. The terminal according to claim 13 , wherein
the measurement module is configured to: measure the CSI-RSRP as per the measurement period according to a CSI-RS sent by a base station which configures a CSI-RS signal related to the terminal.

15. The terminal according to claim 11 , wherein
a frequency domain bandwidth of the CSI-RS>=6PRB; or
a frequency domain bandwidth of the CSI-RS is a system bandwidth of the base station signal.

16. The terminal according to claim 13 , wherein
the measurement module is configured to: measure and obtain the CSI-RSRP according to a CSI-RS of a single antenna port configured by the base station; or
measure and obtain CSI-RSRPs according to CSI-RSs of

Assignees

• Zte Corp

Inventors

• Xin Yu
• Yang Qian

Classifications

• H04L5/0048 Primary

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04W76/048

  Electricity · mapped topic

• H04B7/0626

  Channel coefficients, e.g. channel state information [CSI] · CPC title

• H04W24/10 Primary

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

• H04W76/28

  Discontinuous transmission [DTX]; Discontinuous reception [DRX] · CPC title