US 8,559,376 B2Granted

Method and apparatus for determining transmit power

AssigneeHuawei Technologies Co., Ltd.

InventorsWeixin Wang, Xueli Ma, Zongjie Wang

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Abstract

A method and an apparatus for determining transmission power are disclosed. A gain factor of an E-DPDCH in a compressed mode is determined according to the number of E-DPDCHs used for initial transmission of data; and the transmission power of the E-DPDCH is determined according to the gain factor of the E-DPDCH in compressed mode. As the gain factor of E-DPDCH in compressed mode is determined according to the number of the E-DPDCHs for initial transmission of data, the gain factor of the E-DPDCH in compressed mode can be determined accurately, and thus the transmit power of the E-DPDCH can be determined accurately according to the gain factor of the E-DPDCH. Therefore, the waste of transmit power of the E-DPDCH is reduced, and thus the system capacity is improved.

Claims12

Dependent claims

A non-transitory computer readable medium, comprising:

a computer program code comprising one or more instructions, which, when executed by a computer device, cause the computer device to determine an Enhanced Dedicated Channel Dedicated Physical Data Channel (E-DPDCH) gain factor in compressed mode, according to the number of E-DPDCHs for an initial transmission of data, and cause the computer device to transmit a signal using the determined E-DPDCH gain factor,
wherein, when a current frame is a compressed frame, the computer program code is configured to, when executed by the computer device, cause the computer device to determine the E-DPDCH gain factor in the compressed mode as follows:
β
ed
,
C
,
i
=
β
c
,
C
,
j
·
L
e
,
ref
,
1
L
e
,
I
,
i
·
(
(
L
e
,
ref
,
2
L
e
,
ref
,
1
⁢
A
ed
,
ref
,
2
2
-
A
ed
,
ref
,
1
2
K
e
,
ref
,
2
-
K
e
,
ref
,
1
)
⁢
(
K
e
,
i
-
K
e
,
ref
,
1
)
+
A
ed
,
ref
,
1
2
)
·
10
(
Δ
⁢
⁢
harq
20
)
·
15
·
N
pilot
,
C
N
slots
,
I
·
N
pilot
,
N
wherein,
βed,C,i denotes the E-DPDCH gain factor in the compressed mode,
Le,I,i denotes the number of the E-DPDCHs for the initial transmission of data,
βc,C,j denotes a Dedicated Physical Control Channel (DPCCH) gain factor used for the j:th TFC in the compressed mode,
A
ed
,
ref
,
1
=
β
ed
,
ref
,
1
β
c
,
and
A
ed
,
ref
,
2
=
β
ed
,
ref
,
2
β
c
,
where βc is a DPCCH gain factor in non-compressed mode,
βed,ref,1 and βed,ref,2 denote the E-DPDCH gain factors of a first and a second reference E-TFCs, respectively,
Le,ref,1 and Le,ref,2 denote the number of the E-DPDCHs used for the first and second reference E-TFCs, respectively,
Ke,ref,1 and Ke,ref,2 denote transport block sizes of the first and second reference E-TFCs, respectively,
Ke,i denotes the transport block size of the i:th E-TFC,
Δharq denotes an offset of a Hybrid Automatic Repeat Request (HARQ),
Npilot,C denotes the number of pilot bits p
er slot on a DPCCH in the compressed mode,
Npilot,N denotes the number of pilot bits per slot on the DPCCH in the non-compressed mode, and
Nslots,I denotes the number of non Discontinuous Transmission (DTX) slots in a frame used for the initial transmission of data.

165 more elements

A non-transitory computer readable medium comprising:

a computer program code comprising one or more instructions, which, when executed by a computer device, causes the computer device to an Enhanced Dedicated Channel Dedicated Physical Data Channel (E-DPDCH) gain factor in compressed mode according to the number of E-DPDCH for an initial transmission of data, and cause the computer device to transmit a signal using the determined E-DPDCH gain factor,
wherein, when a current frame is a non-compressed frame, the computer program code is configured to, when executed by the computer device, cause the computer device to determine the E-DPDCH gain factor as follows:
β
ed
,
R
,
i
=
L
e
,
ref
,
1
L
e
,
I
,
i
·
(
(
L
e
,
ref
,
2
L
e
,
ref
,
1
⁢
β
ed
,
ref
,
2
2
-
β
ed
,
ref
,
1
2
K
e
,
ref
,
2
-
K
e
,
ref
,
1
)
⁢
(
K
e
,
i
-
K
e
,
ref
,
1
)
+
β
ed
,
ref
,
1
2
)
⁢
15
N
slots
,
I
·
10
(
Δ
harq
20
)
,
wherein,
βed,R,i denotes the E-DPDCH gain factor in the compressed mode,
Le,I,i denotes the number of the E-DPDCHs used for the initial transmission of data,
βed,ref,1 and βed,ref,2 denote E-DPDCH gain factors of first and second reference E-TFCs, respectively,
Le,ref,1 and Le,ref,2 denote the number of the E-DPDCHs used for the first and second reference E-TFCs, respectively,
Ke,ref,1 and Ke,ref,2 denote transport block sizes of the first and second reference E-TFCs, respectively,
Ke,i denotes transport block size of the i:th E-TFC,
Δharq denotes an offset of a hybrid automatic repeat request (HARD), and
Nslots,I denotes the number of non Discontinuous Transmission (DTX) slots in a frame used for the initial transmission of data.

109 more elements

A network apparatus comprising:

a memory;
and
a processor configured to execute one or more instructions stored in the memory,
wherein, when a current frame is a compressed frame, the instructions are configured to determine, according to the number of E-DPDCHs for an initial transmission of data, an Enhanced Dedicated Channel Dedicated Physical Data Channel (E-DPDCH) gain factor in compressed mode as follows:
β
ed
,
C
,
i
=
β
c
,
C
,
j
·
L
e
,
ref
,
1
L
e
,
I
,
i
·
(
(
L
e
,
ref
,
2
L
e
,
ref
,
1
⁢
A
ed
,
ref
,
2
2
-
A
ed
,
ref
,
1
2
K
e
,
ref
,
2
-
K
e
,
ref
,
1
)
⁢
(
K
e
,
i
-
K
e
,
ref
,
1
)
+
A
ed
,
ref
,
1
2
)
·
10
(
Δ
⁢
⁢
harq
20
)
·
15
·
N
pilot
,
C
N
slots
,
I
·
N
pilot
,
N
wherein,
βed,C,i denotes the E-DPDCH gain factor in the compressed mode,
Le,I,i denotes the number of the E-DPDCHs for the initial transmission of data,
βc,C,j denotes a Dedicated Physical Control Channel (DPCCH) gain factor used for the j:th TFC in the compressed mode,
A
ed
,
ref
,
1
=
β
ed
,
ref
,
1
β
c
,
and
A
ed
,
ref
,
2
=
β
ed
,
ref
,
2
β
c
,
where βc is a DPCCH gain factor in non-compressed mode,
βed,ref,1 and βed,ref,2 denote the E-DPDCH gain factors of a first and a second reference E-TFCs, respectively,
Le,ref,1 and Le,ref,2 denote the number of the E-DPDCHs used for the first and second reference E-TFCs, respectively,
Ke,ref,1 and Ke,ref,2 denote transport block sizes of the first and second reference E-TFCs, respectively,
Ke,i denotes the transport block size of the i:th E-TFC,
Δharq denotes an offset of a Hybrid Automatic Repeat Request (HARQ),
Npilot,C denotes the number of pilot bits per slot on a DPCCH in the compressed mode,
Npilot,N denotes the number of pilot bits per slot on the DPCCH in the non-compressed mode, and
Nslots,I denotes the number of non Discontinuous Transmission (DTX) slots in a frame used for the initial transmission of data.

166 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/563,226Filed 31 Jul 2012 · continuation
Priority: CN 2008 1 01722904 Nov 2008
Published: US 2012/0294217 A122 Nov 2012
Granted: 15 Oct 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04W 52/06
Transmission power control [TPC]: tPC algorithms
H04W 52/16
TPC algorithms: deriving transmission power values from another channel
H04W 52/44
TPC being performed in particular situations: in connection with interruption of transmission
H04W 52/146
Separate analysis of uplink or downlink: uplink power control

Family

PCT/CN2009/074784Parent of this continuation · filed 4 Nov 2009
Application13/090,874Parent of this continuation · filed 20 Apr 2011
US 2012/0294217 A1Pre-grant publication · published 22 Nov 2012
US 8,233,439 B2Parent of this continuation
US 2011/0188517 A1Published application
US 8,559,376 B2This patent

From the US filing history. Foreign family members aren’t listed.