Method and apparatus for enhancing measurement in wireless communication system
Embodiments of the present invention provide a method and an apparatus for enhancing measurement in a wireless communication system. The method includes: obtaining, according to a measurement period or triggered by an event, a measurement amount, where the measurement amount includes a ratio of a valid signal based on a reference signal to a non-valid signal based on the reference signal measured based on the reference signal; reporting the measurement amount to a base station; or performing cell selection or cell reselection according to the measurement amount.
1. A method for enhancing measurement in a wireless communication system, the method comprising:
obtaining by a user equipment in communication with the wireless communication system, according to a measurement period or triggered by an event, a measurement amount,
wherein the measurement amount comprises a signal to interference plus noise ratio (SINR) based on a reference signal, wherein the SINR comprises:
a signal to interference plus noise ratio being
SINR
=
RSRP
Intf
1
+
noise
1
measured on a resource element RE comprising the reference signal; or
a signal to interference plus noise ratio being
SINR
=
RSRP
Intf
2
+
noise
2
measured on an orthogonal frequency division multiplexing OFDM symbol comprising the reference signal; or
a signal to interference plus noise ratio being
SINR
=
N
*
RSRP
∑
RB
=
1
N
Intf
3
+
noise
3
measured on a resource block RB comprising the reference signal in a measurement bandwidth;
wherein RSRP is a valid signal on the RE comprising the reference signal, Intf 1 is an interference signal on the RE comprising the reference signal, noise 1 is a noise signal on the RE comprising the reference signal, Intf 2 is an interference signal received on the OFDM symbol comprising the reference signal in a measurement bandwidth, noise 2 is a noise signal received on the OFDM symbol comprising the reference signal in the measurement bandwidth, Intf 3 is an interference signal received on the resource block comprising the reference signal in the measurement bandwidth, noise 3 is a noise signal received on the resource block comprising the reference signal in the measurement bandwidth, and N is a number of resource blocks occupied by the measurement bandwidth; and
reporting the measurement amount to a base station by the user equipment; or
performing cell selection or cell reselection according to the measurement amount by the user equipment.
2. The method according to claim 1 , wherein before the obtaining, according to the measurement period or triggered by the event, a measurement mount, the method further comprises:
receiving a message carrying measurement configuration and sent by the base station, and performing measurement configuration according to the message, wherein the measurement configuration comprises one or more pieces of the following information: reporting configuration information, a filtering coefficient, a measurement bandwidth, a measurement frequency range, or a measurement period.
3. The method according to claim 2 , wherein if the measurement configuration does not comprise the measurement bandwidth and the measurement frequency range, the obtaining, according to the measurement period, the measurement amount, comprises:
selecting a measurement bandwidth and/or a measurement frequency range;
obtaining, according to the measurement period, the measurement amount on the selected measurement bandwidth and/or the selected measurement frequency range.
4. The method according to claim 1 , wherein the measurement period is a measurement period associated with one or more of measurement accuracy, power consumption of the user equipment, and a reference signal periodicity.
5. The method according to claim 1 , wherein the measurement amount is reported to the base station and the base station thereafter performs an inter-cell interference coordination according to the measurement amount.
6. The method according to claim 1 , wherein the measurement amount is reported to the base station and the base station thereafter makes a cell handover decision according to the measurement amount.
7. The method according to claim 1 , wherein the event is one of:
an event A1, wherein a serving cell of the user equipment is better than an absolute threshold;
an event A2, wherein the serving cell of the user equipment is worse than an the absolute threshold;
an event A3, wherein a neighboring cell for the user equipment is an offset value better than a primary cell for the user equipment, wherein the primary cell is based on carrier aggregation;
an event A4, wherein the neighboring cell for the user equipment is better than an absolute threshold;
an event A5, wherein the primary cell for the user equipment is smaller than an absolute threshold, and the neighboring cell for the user equipment is greater than another absolute threshold; and
an event A6, wherein the neighboring cell for the user equipment is an offset value better than a supplementary cell, wherein the supplementary cell is based on the carrier aggregation.
8. The method according to claim 1 , wherein the event is one of:
an event B1, wherein an inter radio access technology (RAT) neighboring cell for the user equipment is better than a threshold; and
an event B2, wherein a serving cell for the user equipment is lower than a first threshold and the inter RAT neighboring cell is better than a second threshold.
9. The method according to claim 1 , wherein the measurement amount includes a measurement amount of the event.
10. The method according to claim 1 , wherein the measurement amount confirms to a measurement accuracy that includes one or more of an intra-frequency absolute accuracy, an intra-frequency relative accuracy, an inter-frequency absolute accuracy, and an inter-frequency relative accuracy.
11. An apparatus for enhancing measurement in a wireless communication system, the apparatus comprising:
a measurement unit implemented by one or more processors, the measurement unit configured to obtain, according to a measurement period or triggered by an event, a measurement amount, wherein the measurement amount comprises a signal to interference plus noise ratio (SINR) based on a reference signal, wherein the SINR comprises:
a signal to interference plus noise ratio being
SINR
=
RSRP
Intf
1
+
noise
1
measured on a resource element RE comprising the reference signal; or
a signal to interference plus noise ratio being
SINR
=
RSRP
Intf
2
+
noise
2
measured on an orthogonal frequency division multiplexing OFDM symbol comprising the reference signal; or
a signal to interference plus noise ratio being
SINR
=
N
*
RSRP
∑
RB
=
1
N
Intf
3
+
noise
3
measured on a resource block RB comprising the reference signal in a measurement bandwidth;
wherein RSRP is a valid signal on the RE comprising the reference signal, Intf 1 is an interference signal on the RE comprising the reference signal, noise 1 is a noise signal on the RE comprising the reference signal, Intf 2 is an interference signal received on the OFDM symbol comprising the reference signal in a measurement bandwidth, noise 2 is a noise signal received on the OFDM symbol comprising the reference signal in the measurement bandwidth, Intf 3 is an interference signal received on the resource block comprising the reference signal in the measurement bandwidth, noise 3 is a noise signal received on the resource block comprising the reference signal in the measurement bandwidth, and N is a number of resource blocks occupied by the measurement bandwidth;
a first transmission unit implemented by the one or more processors, the first transmission unit configured to report the measurement amount to a base station; and
a mobility execution unit implemented by the one or more processors, the mobility configuration unit configured to perform cell selection or cell reselection according to the measurement amount.
12. The apparatus according to claim 11 , wherein the first transmission unit is configured to, before the measurement result is obtained according to the measurement period or triggered by the event, receive a message carrying the measurement configuration and sent by the base station, and perform measurement configuration according to the message, wherein the measurement configuration comprises one or more pieces of the following information: reporting configuration information, a filtering coefficient, a measurement bandwidth, a measurement frequency range, or a measurement period.
13. The apparatus according to claim 12 , further comprising a selection unit, configured to, if the measurement configuration does not comprise the measurement bandwidth and the measurement frequency range, select a measurement bandwidth and/or a measurement frequency range; wherein the measurement unit obtains, according to the measurement period, the measurement amount on the selected measurement bandwidth and/or the selected measurement frequency range.
14. The apparatus according to claim 11 , wherein the measurement period is a measurement period associated with one or more of a measurement accuracy, a power consumption of a user equipment, and a reference signal periodicity.
15. The apparatus according to claim 11 , wherein the measurement amount is reported to the base station and the base station thereafter performs inter-cell interference coordination according to the measurement amount.
16. The apparatus according to claim 11 , wherein the measurement amount is reported to the base station and the base station thereafter makes a cell handover decision according to the measurement amount.
17. The apparatus according to claim 11 , wherein the event is one of:
an event A1, wherein a serving cell of the apparatus is better than an absolute threshold;
an event A2, wherein the serving cell of the apparatus is worse than an the absolute threshold;
an event A3, wherein a neighboring cell for the apparatus is an offset value better than a primary cell for the apparatus, wherein the primary cell is based on carrier aggregation;
an event A4, wherein the neighboring cell for the apparatus is better than an absolute threshold;
an event A5, wherein the primary cell for the apparatus is smaller than an absolute threshold, and the neighboring cell for the apparatus is greater than another absolute threshold; and
an event A6, wherein the neighboring cell for the apparatus is an offset value better than a supplementary cell, wherein the supplementary cell is based on the carrier aggregation.
18. The apparatus according to claim 11 , wherein the event is one of:
an event B1, wherein an inter radio access technology (RAT) neighboring cell for the apparatus is better than a threshold; and
an event B2, wherein a serving cell for the apparatus is lower than a first threshold and the inter RAT neighboring cell is better than a second threshold.
19. The apparatus according to claim 11 , wherein the measurement amount includes a measurement amount of the event.
20. The apparatus according to claim 11 , wherein the measurement amount confirms to a measurement accuracy that includes one or more of an intra-frequency absolute accuracy, an intra-frequency relative accuracy, an inter-frequency absolute accuracy, and an inter-frequency relative accuracy.