US2011207419A1PendingUtilityA1
Method and apparatus for determining transmit power
Est. expiryNov 4, 2028(~2.3 yrs left)· nominal 20-yr term from priority
H04W 52/06H04W 52/44H04W 52/286H04W 52/146H04W 52/16
49
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Claims
Abstract
A method and an apparatus for determining transmit power are disclosed. The method includes: determining an E-DPDCH gain factor in compressed mode according to the number of E-DPDCH required for initial transmission of data; and determining transmit power of E-DPDCH according to the E-DPDCH gain factor in compressed mode. The E-DPDCH gain factor in compressed mode is determined according to the number of E-DPDCH required for initial transmission of data, and therefore, the E-DPDCH gain factor in compressed mode is determined accurately, the transmit power of E-DPDCH is determined accurately according to the E-DPDCH gain factor, the waste of transmit power of E-DPDCH is reduced, and therefore the system capacity is improved.
Claims
exact text as granted — not AI-modified1 . A method for determining transmit power, comprising:
determining an Enhanced Dedicated Channel Dedicated Physical Data Channel (E-DPDCH) gain factor in compressed mode according to the number of E-DPDCH required for initial transmission of data; and determining transmit power of E-DPDCH according to the E-DPDCH gain factor in compressed mode.
2 . The method according to claim 1 , further comprising:
determining the number of non Discontinuous Transmission (DTX) slots in a frame used for initial transmission of data N slots,I ; wherein determining the E-DPDCH gain factor in compressed mode is further according to the N slots,I .
3 . The method according to claim 2 , further comprising:
determining an E-DPDCH gain factor of a first reference Enhanced Dedicated Channel Transport Format Combination (E-TFC) β ed,ref,1 , the number of E-DPDCH used for the first reference E-TFC L e,ref,1 , and transport block size of the first reference E-TFC K e,ref,1 ; determining an E-DPDCH gain factor of a second reference E-TFC β ed,ref,2 , the number of E-DPDCH used for the second reference E-TFC L e,ref,2 , and transport block size of the second reference E-TFC K e,ref,2 ; determining transport block size of the i:th E-TFC K e,i ; and determining an offset of a Hybrid Automatic Repeat Request (HARQ) Δ harq ; determining the E-DPDCH gain factor in compressed mode is further according to the β ed,ref,1 , the L e,ref,1 , the K e,ref,1 , the β ed,ref,2 , the K e,ref,2 , the K e,i and the Δ harq .
4 . The method according to claim 3 , further comprising:
determining a Dedicated Physical Control Channel (DPCCH) gain factor used for a j:th Transport Format Combination (TFC) in compressed mode β c,C,j ; determining a DPCCH gain factor in non-compressed mode β c ; determining the number of pilot bits per slot on the DPCCH in compressed frames N pilot,C ; and determining the number of pilot bits per slot on the DPCCH in non-compressed frames N pilot,N ; wherein determining the E-DPDCH gain factor in compressed mode is further according to the β c,C,j , the β c , the N pilot,C , and the N pilot,N .
5 . The method according to claim 1 , wherein:
when L e,I,i denotes the number of E-DPDCH required for initial transmission of data, β ed,C,i denotes the E-DPDCH gain factor, and a current frame is a compressed frame, the step of determining the E-DPDCH gain factor in compressed mode according to the number of E-DPDCH required for initial transmission of data comprises:
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,
where
β c,C,j denotes a DPCCH gain factor used for the j:th TFC in compressed mode;
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=
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c
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c
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and β c is a DPCCH gain factor in non-compressed mode; β ed,ref,1 and β ed,ref,2 denote E-DPDCH gain factors of first and second reference E-TFCs respectively; L e,ref,1 and L e,ref,2 denote the number of E-DPDCHs used for the first and second reference E-TFCs respectively; K e,ref,1 and K e,ref,2 denote the transport block sizes of the first and second reference E-TFCs respectively; K e,i denotes the transport block size of the i:th E-TFC; Δ harq denotes the offset of the HARQ; N pilot,C is the number of pilot bits per slot on the DPCCH in compressed frames; N pilot,N is the number of pilot bits per slot on the DPCCH in non-compressed frames; and N slots,I is the number of non DTX slots in a frame used for initial transmission of data.
6 . The method according to claim 1 , wherein:
when L e,I,i denotes the number of E-DPDCH required for initial transmission of the data, β ed,R,i denotes the E-DPDCH gain factor, and a current frame is a non-compressed frame, the step of determining the E-DPDCH gain factor in compressed mode according to the number of E-DPDCH required for initial transmission of data comprises:
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15
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slots
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1
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harq
20
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,
where
β ed,ref,1 and β ed,ref,2 denote the E-DPDCH gain factors of first and second reference E-TFCs respectively; L e,ref,1 and L e,ref,2 denote the number of E-DPDCHs used for the first and second reference E-TFCs respectively; K e,ref,1 and K e,ref,2 denote transport block sizes of the first and second reference E-TFCs respectively; K e,i denotes transport block size of the i:th E-TFC; Δ harq is the offset of the HARQ; and N slots,I is the number of non-DTX slots in a frame used for initial transmission of data.
7 . The method according to claim 1 , wherein:
the step of determining the transmit power of E-DPDCH according to the E-DPDCH gain factor in compressed mode comprises: determining a power offset according to a ratio of the E-DPDCH gain factor to the DPCCH gain factor; and determining the transmit power of E-DPDCH according to the power offset and absolute power of the DPCCH.
8 . An apparatus for determining transmit power, comprising:
a gain factor determining module, configured to determine an Enhanced Dedicated Channel Dedicated Physical Data Channel (E-DPDCH) gain factor in compressed mode according to the number of E-DPDCH required for initial transmission of data; and a power determining module, configured to determine transmit power of E-DPDCH according to the E-DPDCH gain factor in compressed mode determined by the gain factor determining module.
9 . The apparatus according to claim 8 , further comprising:
a module configured to determine the number of non Discontinuous Transmission (DTX) slots N slots,I in a frame used for initial transmission of data; wherein the power determining module is configured to determine the E-DPDCH gain factor in compressed mode further according to the N slots,I .
10 . The apparatus according to claim 9 , further comprising:
a module configured to determine an E-DPDCH gain factor of a first reference Enhanced Dedicated Channel Transport Format Combination (E-TFC) β ed,ref,1 , the number of E-DPDCH used for the first reference E-TFC L e,ref,1 , and transport block size of the first reference E-TFC K e,ref,1 ; a module configured to determine an E-DPDCH gain factor of a second reference E-TFC β ed,ref,2 , the number of E-DPDCH used for the second reference E-TFC L e,ref,2 and transport block size of the second reference E-TFC K e,ref,2 ; a module configured to determine transport block size of the i:th E-TFC K e,i ; and a module configured to determine an offset of a Hybrid Automatic Repeat Request (HARQ) Δ harq ; wherein the power determining module is configured to determine the E-DPDCH gain factor in compressed mode further according to the β ed,ref,1 , the L e,ref,1 , the K e,ref,1 , the β ed,ref,2 , the K e,ref,2 , the K e,i and the Δ harq .
11 . The apparatus according to claim 10 , further comprising:
a module configured to determine a Dedicated Physical Control Channel (DPCCH) gain factor used for a j:th Transport Format Combination (TFC) in compressed mode β c,C,j ; a module configured to determine a DPCCH gain factor in non-compressed mode β c ; a module configured to determine the number of pilot bits per slot on the DPCCH in compressed frames N pilot,C ; and a module configured to determine the number of pilot bits per slot on the DPCCH in non-compressed frames N pilot,N ; wherein the power determining module is configured to determine the E-DPDCH gain factor in compressed mode further according to the β c,C,j , the β c , the N pilot,C , and the N pilot,N .
12 . The apparatus according to claim 8 , wherein the gain determining module comprises:
a first determining submodule, configured to determine the E-DPDCH gain factor when L e,I,i denotes the number of E-DPDCH required for initial transmission of data, β ed,C,i denotes the E-DPDCH gain factor, and a current frame is a compressed frame:
β
ed
,
C
,
i
=
β
c
,
C
,
j
·
L
e
,
ref
,
1
L
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1
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i
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harq
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)
·
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·
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pilot
,
C
N
slots
,
1
·
N
pilot
,
N
wherein
β c,C,j denotes a DPCCH gain factor used for the j:th TFC in compressed mode;
A
ed
,
ref
,
1
=
β
ed
,
ref
,
1
β
c
,
A
ed
,
ref
,
2
=
β
ed
,
ref
,
2
β
c
,
and β c is a DPCCH gain factor in non-compressed mode; β ed,ref,1 and β ed,ref,2 denote the E-DPDCH gain factors of first and second reference E-TFCs respectively; L e,ref,1 and L e,ref,2 denote the number of E-DPDCHs used for the first and second reference E-TFCs respectively; K e,ref,1 and K e,ref,2 denote the transport block sizes of the first and second reference E-TFCs respectively; K e,i denotes the transport block size of the i:th E-TFC; Δ harq denotes the offset of the HARQ; N pilot,C is the number of pilot bits per slot on the DPCCH in compressed frames; N pilot,N is the number of pilot bits per slot on the DPCCH in non-compressed frames; and N slots,I is the number of non DTX slots in a frame used for initial transmission of data.
13 . The apparatus according to claim 8 , wherein the gain determining module comprises:
a second determining submodule, configured to determine the E-DPDCH gain factor when L e,I,i denotes the number of E-DPDCH required for initial transmission of data, β ed,R,i denotes the E-DPDCH gain factor, and a current frame is a non-compressed frame:
β
ed
,
R
,
i
,
=
L
e
,
ref
,
1
L
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,
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,
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ed
,
ref
,
1
2
)
15
N
slots
,
1
·
10
(
Δ
harq
20
)
wherein
β ed,ref,1 and β ed,ref,2 denote the E-DPDCH gain factors of first and second reference E-TFCs respectively; L e,ref,1 and L e,ref,2 denote the number of E-DPDCHs used for the first and second reference E-TFCs respectively; K e,ref,1 and K e,ref,2 denote transport block sizes of the first and second reference E-TFCs respectively; K e,i denotes transport block size of the i:th E-TFC; Δ harq is the offset of the HARQ; and N slots,I is the number of non DTX slots in a frame used for initial transmission of data.
14 . The apparatus according to claim 8 , wherein:
the power determining module is further configured to determine a power offset according to a ratio of the E-DPDCH gain factor to the DPCCH gain factor; and determine the transmit power of E-DPDCH according to the power offset and absolute power of the DPCCH.
15 . The apparatus according to claim 8 , wherein the apparatus is a base station.
16 . The apparatus according to claim 8 , wherein the apparatus is a terminal.Join the waitlist — get patent alerts
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