Method and apparatus for measuring a packet throughput in wireless communication system
A method and apparatus of measuring a packet throughput in a wireless communication system are provided. When determining a reference time for estimating packet throughput, a receiver determines the time that a data burst starts or ends in order to estimate the packet throughput considering a change in the data burst of the transmitter buffer. A measurement period is defined through the determined start time and end time of the data burst, and packet throughput is measured considering the total amount of the received data burst. The throughput of packet data may be estimated by each base station based on the same standard rule, so that the measured packet throughput values may be reliable, thus allowing the operator to make use of it as a parameter for MDT.
1. A method of measuring throughput in a wireless communication system, the method comprising:
determining, by a base station, a start point (T2) at which a data burst begins;
determining, by the base station, an end point (T1) at which the data burst ends;
measuring, by the base station, a scheduled IP throughput of the data burst for Minimization of Drive Test (MDT) based on the start point (T2) and the end point (T1);
wherein the start point (T2) is a point in time when a first transmission begins after the base station estimates that a user equipment's buffer size becomes greater than zero, and
wherein the end point (T1) is a point in time when the base station estimates that the user equipment's buffer size becomes zero.
2. The method of claim 1 , wherein the start point (T2) is a point in time when a first transmission begins after the base station estimates that the user equipment's buffer size becomes greater than zero for a radio bearer of the user equipment.
3. The method of claim 2 , wherein the end point (T1) is a point in time when the base station estimates that the user equipment's buffer size becomes zero for a radio bearer of the user equipment.
4. The method of claim 1 , wherein the throughput of the data burst is measured by following equation;
If
∑
ThpTimeU
1
>
0
,
∑
ThpVolU
1
∑
ThpTimeU
1
×
1000
[
kbits
/
s
]
If
∑
ThpTimeU
1
=
0
,
0
[
kbits
/
s
]
where
ThpTimeU
1
=
T
1
-
T
2
,
〈
Equation
〉
ThpVolU1 is a data volume for the data burst.
5. The method of claim 4 , wherein the estimate of the user equipment's buffer size is obtained based on a buffer status report (BSR) or indication report from the user equipment.
6. The method of claim 4 , wherein the measurement is performed for an uplink.
7. A base station for performing a measurement of throughput in a wireless communication system, the base station comprising:
a radio frequency (RF) unit for receiving a radio signal; and
a processor, operatively coupled with the RF unit, configured to:
determine a start point (T2) at which a data burst begins and an end point (T1) at which the data burst ends; and,
measure a scheduled IP throughput of the data burst for Minimization of Drive Test (MDT) based on the start point (T2) and the end point (T1);
wherein the start point (T2) is a point in time when a first transmission begins after the processor estimates that a user equipment's buffer size becomes greater than zero, and the end point (T1) is a point in time when the processor estimates that the user equipment's buffer size becomes zero.
8. The base station as claimed in claim 7 , wherein the start point (T2) is a point in time when a first transmission begins after the base station estimates that the user equipment's buffer size becomes greater than zero for a radio bearer of the user equipment.
9. The base station as claimed in claim 8 , wherein the end point (T1) is a point in time when the base station estimates that the user equipment's buffer size becomes zero for a radio bearer of the user equipment.
10. The base station as claimed in claim 7 , wherein the throughput of the data burst is measured by following equation;
If
∑
ThpTimeU
1
>
0
,
∑
ThpVolU
1
∑
ThpTimeU
1
×
1000
[
kbits
/
s
]
If
∑
ThpTimeU
1
=
0
,
0
[
kbits
/
s
]
where
ThpTimeU
1
=
T
1
-
T
2
,
〈
Equation
〉
ThpVolU1 is a data volume for the data burst.
11. The base station as claimed in claim 10 , wherein the estimate of the user equipment's buffer size is obtained based on a buffer status report (BSR) or indication report from the user equipment.