Method, device, and system for radio resource management measurement

Patent metadata

Field	Value
Publication number	US-10045986-B2
Application number	US-201615140299-A
Country	US
Kind code	B2
Filing date	Apr 27, 2016
Priority date	Oct 28, 2013
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

Embodiments provide a method for radio resource management measurement. The method includes: determining, by a UE according to a detected first reference signal, a first resource on which the detected first reference signal is located; determining, by the UE, a reference signal received power RSRP of a target cell according to a received power of the detected first reference signal carried on the first resource; determining, by the UE, a second resource; determining, by the UE, a received signal strength indicator RSSI of the target cell according to a total received power on the second resource; and determining, by the UE, reference signal received quality RSRQ or a signal to interference plus noise ratio SINR of the target cell or both according to the RSRP and RSSI. The method is applied to radio resource management measurement.

First claim

What is claimed is:

1. A user equipment (UE) comprising:
a processor; and
a memory coupled to the processor, wherein the memory stores instructions that, when executed by the processor, cause the processor to be configured to:
detect a first reference signal comprising a discovery reference signal (DRS), and determine, according to the detected first reference signal, a first resource on which the detected first reference signal is located;
determine a reference signal received power (RSRP) of a target cell according to a received power of the detected first reference signal carried on the first resource;
determine a second resource, wherein the second resource carries second reference information when (a) the target cell or a neighboring cell of the target cell, or both, are in an active state, or (b) the target cell changes from the dormant state to the active state, wherein the second reference information comprises:
a) a channel state information reference signal (CSI-RS), and
b) a secondary synchronization signal (SSS),

determine a received signal strength indicator (RSSI) of the target cell according to a total received power on the second resource, wherein the first resource and the second resource are at different times; and
determine reference signal received quality (RSRQ) or a signal to interference plus noise ratio (SINR) of the target cell according to the RSRP and RSSI.

2. The user equipment according to claim 1 , wherein the processor is further configured to detect a third reference signal, and determine, according to the detected third reference signal, the target cell corresponding to the detected third reference signal.

3. The user equipment according to claim 1 , wherein a number of time units comprised in the second resource is greater than a number of time units comprised in the first resource, and the time units comprised in the second resource are inclusive of the time units comprised in the first resource, wherein the time units comprise any one of an orthogonal frequency division multiplexing (OFDM) symbol, a timeslot, a subframe, and a subframe set.

4. The user equipment according to claim 1 , wherein:
the processor is further configured to determine the second resource according to the first resource and a resource offset, wherein the resource offset comprises a time-domain offset or a frequency offset or both, and the resource offset is pre-configured or is notified by a base station.

5. The user equipment according to claim 1 , wherein the processor is further configured to:
if a transmit power of the target cell on the second resource is not 0, determine the RSRQ of the target cell according to the RSRP and RSSI; and
if a transmit power of the target cell on the second resource is 0, determine the SINR of the target cell according to the RSRP and RSSI.

6. The user equipment according to claim 1 , further comprising:
a transmitter coupled to the processor and configured to transmit the RSRQ to a base station, wherein the RSRQ is used by the base station to determine whether to switch the target cell from the dormant state to the active state, and/or to determine whether to configure the target cell for the UE.

7. A method for radio resource management measurement, comprising:
detecting, by a user equipment (UE), a first reference signal comprising a discovery reference signal (DRS), and determining, according to the detected first reference signal, a first resource on which the detected first reference signal is located;
determining, by the UE, a reference signal received power (RSRP) of a target cell according to a received power of the detected first reference signal carried on the first resource;
determining, by the UE, a second resource, wherein the second resource carries second reference information when (a) the target cell or a neighboring cell of the target cell, or both, are in an active state, or (b) the target cell changes from the dormant state to the active state, wherein the second reference information comprises:
a) channel state information reference signal (CSI-RS), and
b) a secondary synchronization signal (SSS),

determining, by the UE, a received signal strength indicator (RSSI) of the target cell according to a total received power on the second resource; and
determining, by the UE, reference signal received quality (RSRQ) or a signal to interference plus noise ratio (SINR) of the target cell or both according to the RSRP and RSSI.

8. The method according to claim 7 , further comprising:
detecting, by the UE, a third reference signal, and determining, according to the detected third reference signal, a target cell corresponding to the detected third reference signal.

9. The method according to claim 7 , wherein a number of time units comprised in the second resource is greater than a number of time units comprised in the first resource, and the time units comprised in the second resource are inclusive of the time units comprised in the first resource, wherein the time units are any one of an orthogonal frequency division multiplexing (OFDM) symbol, a timeslot, a subframe, and a subframe set.

10. The method according to claim 7 , wherein determining the RSRQ or the SINR of the target cell or both according to the RSRP and RSSI, further comprises:
if a transmit power of the target cell on the second resource is not 0, determining, by the UE, the RSRQ of the target cell according to the RSRP and RSSI; and
if a transmit power of the target cell on the second resource is 0, determining, by the UE, the SINR of the target cell according to the RSRP and RSSI.

11. The method according to claim 7 , further comprising:
reporting, by the UE, the RSRQ to a base station, wherein the RSRQ is used by the base station to determine whether to switch the target cell from the dormant state to the active state, and/or to determine whether to configure the target cell for the UE.

12. The method according to claim 7 , further comprising:
reporting, by the UE, the SINR to a base station, wherein the SINR is used by the base station to determine whether to switch the target cell from the dormant state to the active state, and/or to determine whether to configure the target cell for the UE.

13. A non-transitory, computer readable medium at user equipment that stores executable instructions that, when executed by a processor, cause the user equipment (UE) to perform the following method for radio resource management measurement:
detecting a first reference signal;
determining, according to the detection of the first reference signal, a first resource on which the first reference signal is located, wherein the first reference signal comprises at least one of a cell-specific reference signal (CRS), and a channel state information reference signal (CSI-RS);
determining a reference signal received power (RSRP) of a target cell according to a received power of the first reference signal carried on the first resource;
determining a second resource, wherein the second resource (a) carries a second reference information when the neighboring cell of the target cell changes from the dormant state to the active state and (b) does not carry the second reference information when a neighboring cell of the target cell is in a dormant state, wherein the second reference information includes at least one of a primary synchronization signal (PSS), and a secondary synchronization signal (SSS), wherein the second reference information comprises a channel state information reference signal (CSI-RS) and a secondary synchronization signal (SSS);
determining a received signal strength indicator (RSSI) of the target cell a

Assignees

• Huawei Tech Co Ltd

Inventors

• Guan Lei
• Xue Lixia
• Mazzarese David Jean-Marie

Classifications

• C07D239/22

  with hetero atoms directly attached to ring carbon atoms · CPC title

• H04W24/10

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

• C07D213/643

  2-Phenoxypyridines; Derivatives thereof · CPC title

• A61K31/506 Primary

  not condensed and containing further heterocyclic rings · CPC title

• A61K31/4439

  containing a five-membered ring with nitrogen as a ring hetero atom, e.g. omeprazole (nicotine A61K31/465) · CPC title