CN101841843B - Downlink transmission method, device and system of continuous packet connectivity technology - Google Patents
Downlink transmission method, device and system of continuous packet connectivity technology Download PDFInfo
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Abstract
The invention discloses a downlink transmission method, a device and a system of the continuous packet connectivity (CPC) technology. The method comprises the following steps: for each UE, calculating an actual normalized coding rate vr according to CQI which is submitted by the UE and determining SINRr which is used for indicating actual quality of a channel according to the vr; calculating a target normalized coding rate vt of the UE according to pre-allocated semi-persistent scheduling SPS resources and determining SINRt which is used for indicating target quality of the channel according to the vt; determining the power self-adaptive adjustment quantity of the UE according to the difference value of SINRt and SINRr; and determining downlink transmission power corresponding to the UE according to the power self-adaptive adjustment quantity of the UE. Power self-adaptive adjustment can be realized in the downlink transmission process.
Description
Technical field
The present invention relates to the network communications technology, particularly relate to downlink transmission method, device and system in a kind of continuity grouping connection (CPC, Continuous Connectivity for Packet data) technology.
Background technology
The 3G system supports time division multiplexing (TDD, Time Division Duplex) and two kinds of standards of frequency division multiplexing (FDD, Frequency Division Duplex) to realize the use flexible and efficient to frequency spectrum resource simultaneously.FDD and TDD have introduced high-speed packet access enhancing (HSPA+ at 3GPP Release7 and Release8 in succession, High Speed Packet Access Plus) technology, HSPA+ technology comprise that a plurality of technical characteristics: CPC, enhancing CELL FACH, multi-antenna technology (MIMO), 64QAM, L2 strengthen.
In the HSPA+ technology, CPC is mainly used in optimizing the transmission of small data packets, comprises Less mechanism and the control channel DRX mechanism of control channel HS-SCCH.The Less mechanism of HS-SCCH is mainly used in downlink transmission process, and purpose is in order to save the expense of control channel HS-SCCH.In the prior art, in the system of the Less mechanism that adopts CPC technology HS-SCCH, the process of downlink transfer mainly comprises:
It is the first distribution of transfer resource of High-Speed Physical Downlink Shared Channel (HS-PDSCH) that the mode of step 1, employing predefine resource is carried out down physical channel.
Here, the special-purpose predefine stock number of distribution is mainly considered the transmission demand of data package size, and large packet adopts the mode of dynamic dispatching to carry out the resource distribution.
The predefine resource allocation process is called semi-continuous scheduling (SPS), and the predefine resource is also referred to as the SPS resource.Because this resource distribution mode has reduced the control channel expense, be called the Less mechanism of HS-SCCH.
Step 2, reserve resource constantly at SPS, when HS-PDSCH transmission business data packet, according to the size of business data packet, selection is a kind of from the 4 kinds of transmission block sizes (TB S) that set in advance.
Step 3, according to the TB S that selects in the current business data packet of HS-PDSCH code channel resource transmission of reserving, single-code channel power is divided equally according to gross power.
Can find out according to above description, in the prior art, the power of HS-PDSCH is not adjusted in the CPC downlink transfer, namely in each SPS resource cycle, no matter packet is much, all be to transmit according to the code channel resource of reserving, that is to say that the through-put power size can not change, can not carry out the self adaptation adjustment of power.Like this, when the variations in the actual environment, actual code rate variation but with the channel quality wide of the mark, can't change by adaptive channel fading, this can bring the low of efficiency of transmission, causes repeatedly to retransmit, and increases time delay, professional qos requirement is difficult to satisfy, and the efficiency of transmission of HS-PDSCH can't satisfy the error block rate requirement 10%.
Summary of the invention
The present invention proposes downlink transmission method, device and system in a kind of continuous packet connectivity technology, so that can in downlink transmission process, carry out the power adaptive adjustment.
In order to achieve the above object, technical scheme of the present invention is achieved in that
Downlink transmission method in a kind of continuous packet connectivity technology, the method comprises:
A, for each UE, the CQI that reports according to this UE calculates actual normalization code rate v
r, according to this v
rBe identified for the SINR of indicating channel actual mass
r
B, according to pre-assigned semi-continuous scheduling SPS resource, calculate the target normalization code rate v of this UE
r, according to this v
tBe identified for the SINR of indicating channel aimed quality
t
C, according to SINR
tAnd SINR
rDifference, determine the power adaptive adjustment amount of this UE;
D, according to the power adaptive adjustment amount of this UE, determine the power of the downlink transfer that this UE is corresponding.
In the steps A, the described CQI that reports according to this UE calculates v
rStep comprise:
A1, RTBS corresponding to the described UE of calculating
m
A2, calculating
Wherein, Data
cIt is the maximum number bits that the UE ability rating can carry.
In the steps A, described according to this v
rDetermine SINR
rStep comprise:
The SINR that obtains from link simulation and the corresponding relation of different coding speed v, determine and v
rCorresponding SINR
r
Described steps A 1 comprises:
Whether judge the interval of time gap current time that described UE reports CQI for the last time greater than predefined time interval GAP, if so, the CQI that described UE is corresponding then
mThe respective value of value when being defined as adopting 1/2 code rate and QPSK; If not, with CQI
mValue be defined as the value of the CQI that described UE reports for the last time, perhaps,
Wherein, p is smoothing factor, 0＜p≤1, CQI
M-1Value for the described UE inferior CQI that reports second from the bottom; With the CQI that determines
mThe value of corresponding RTB S is as RTBS
m
Perhaps,
The value of the CQI that reports according to described UE is at first searched the mapping table of CQI and RTB S, determines the value of the RTBS ' that the value of the CQI that reports with UE is corresponding, then utilizes this RTBS, calculates reflection CQI corresponding to UE
mRTB S
mValue, computing formula is:
Wherein, p is smoothing factor, 0＜p≤1, RTBS
M-1Value for RTB S corresponding to the value of the described UE inferior CQI that reports second from the bottom.
Among the step B, the target normalization code rate v of described this UE of calculating
tStep comprise: according to the first data package size that passes of the SPS of described UE, from pre-assigned various transmission block TBS sizes, select suitable TBS
p,
Wherein, Data
tThat SPS reserves the maximum number bits that resource can be carried;
Among the step B, described according to v
rDetermine SINR
tStep comprise: the SINR that obtains from link simulation and the corresponding relation of different coding speed v, determine and v
tCorresponding SINR
t
Among the step C, the step of the power adaptive adjustment amount of described definite this UE comprises: with 10logN+SINR
t-SINR
rValue be defined as the power adaptive adjustment amount of this UE, wherein, N is the code channel number of described UE in time slot of this SPS resource;
Among the step D, the step of the power of the downlink transfer that described definite this UE is corresponding comprises:
Calculate P
t=P
Normal+ 10logN+SINR
t-SINR
r, wherein, P
NormalAverage single-code channel power for transmission last time corresponding to the described UE that precomputes; With the P that calculates
tValue be defined as the power of downlink transfer corresponding to UE.
Among the step D, calculating P
tValue after, and with P
tValue be defined as further comprising before the power of downlink transfer corresponding to UE:
Calculate P corresponding to other each UE
t(k) value is until user assignment is complete or code channel resource assigns or power resource allocation is complete;
The power sum of all user assignments of statistics preassignment code channel resource
If P
Total＜P
Max, then carry out described with the P that calculates
tValue be defined as the power of downlink transfer corresponding to UE; P
MaxBe the maximum transmission power of base station support,
If P
Total＞P
Max, then calculate UE's
With the P that finally obtains
tValue be defined as the power of downlink transfer corresponding to UE.
When first for new data packets of a UE execution, trigger and carry out described steps A;
And/or,
Described packet is for using any one professional packet of SPS resource.
Downlink transfer device in a kind of continuous packet connectivity technology comprises:
Channel actual mass computing module is used for for each UE, and the CQI that reports according to this UE calculates actual normalization code rate v
r, according to this v
rBe identified for the SINR of indicating channel actual mass
r
Channel aimed quality computing module is used for according to pre-assigned semi-continuous scheduling SPS resource, calculates the target normalization code rate v of this UE
r, according to this v
rBe identified for the SINR of indicating channel aimed quality
t
The downlink transmission power determination module is used for according to SINR
tAnd SINR
rDifference, determine the power adaptive adjustment amount of this UE, and according to the power adaptive adjustment amount of this UE, determine the power of the downlink transfer that this UE is corresponding.
Described channel actual mass computing module comprises: RTBS
mCalculating sub module, v
rCalculating sub module and SINR
rCalculating sub module, wherein,
RTBS
mCalculating sub module is calculated RTBS corresponding to described UE
mConcrete account form is:
Mode one, whether judge the interval of time gap current time that described UE reports CQI for the last time greater than predefined time interval GAP, if so, the CQI that described UE is corresponding then
mThe respective value of value when being defined as adopting 1/2 code rate and QPSK; If not, with CQI
mValue be defined as the value of the CQI that described UE reports for the last time, perhaps,
Wherein, p is smoothing factor, 0＜p≤1, CQI
M-1Value for the described UE inferior CQI that reports second from the bottom; With the CQI that determines
mThe value of corresponding RTB S is as RTBS
mThe value of mode two, the CQI that reports according to described UE is at first searched the mapping table of CQI and RTBS, determines the value of the RTBS ' that the value of the CQI that reports with UE is corresponding, then utilizes this RTBS, calculates reflection CQI corresponding to UE
mRTBS
mValue, computing formula is:
Wherein, p is smoothing factor, 0＜p≤1, RTBS
M-1Value for RTB S corresponding to the value of the described UE inferior CQI that reports second from the bottom;
v
rCalculating sub module is calculated
Data
cIt is the maximum number bits that the UE ability rating can carry;
SINR
rCalculating sub module the SINR that obtains from link simulation and the corresponding relation of different coding speed v, is determined and v
rThe v that calculating sub module calculates
rCorresponding SINR
r
Described channel aimed quality computing module comprises: transmission block is determined submodule, v
tCalculating sub module and SINR
tCalculating sub module, wherein,
Transmission block is determined submodule, is used for the first data package size that passes according to the SPS of described UE, selects suitable TBS from pre-assigned various transmission block TBS sizes
p
v
tCalculating sub module is used for determining the TBS that submodule calculates according to transmission block
pCalculate
Wherein, Data
tThat SPS reserves the maximum number bits that resource can be carried;
SINR
tCalculating sub module for the SINR that obtains from link simulation and the corresponding relation of different coding speed v, is determined and v
tThe v that calculating sub module calculates
tCorresponding SINR
t
Described downlink transmission power determination module comprises: power adaptive adjustment amount calculating sub module and P
tCalculating sub module, wherein,
Power adaptive adjustment amount calculating sub module is used for 10logN+SINR
t-SINR
rValue be defined as the power adaptive adjustment amount of this UE, wherein, N is the code channel number of described UE in time slot of this SPS resource;
P
tCalculating sub module is used for calculating P
r=P
Normal+ 10logN+SINR
t-SINR
r, wherein, P
NormalAverage single-code channel power for transmission last time corresponding to the described UE that precomputes; And,
P
tCalculating sub module is directly with the P that calculates
tValue be defined as the power of downlink transfer corresponding to UE; Perhaps, P
tCalculating sub module is at first calculated P corresponding to other each UE
t(k) value is until user assignment is complete or code channel resource assigns or power resource allocation is complete; The power sum of all user assignments of statistics preassignment code channel resource
If P
Ttal＜P
Max, then carry out described with the P that calculates
tValue be defined as the power of downlink transfer corresponding to UE; P
MaxFor the maximum transmission power of base station support, if P
Total＞P
Max, then calculate UE's
With the P that finally obtains
tValue be defined as the power of downlink transfer corresponding to UE.
This device is arranged in the base station, perhaps is newly-increased special equipment.
Downlink transmission system in a kind of continuous packet connectivity technology, this system comprises: the downlink transfer device in UE and any one continuous packet connectivity technology of the present invention.
This shows, in the present invention, the downlink transmission power of HS-PDSCH channel can be adjusted according to the channel actual mass that UE reports in the CPC downlink transfer, that is to say that the through-put power size carried out the self adaptation adjustment of power.Like this, when the variations in the actual environment, actual code rate variation can produce with channel quality and contact, come adaptive channel fading to change, improve efficiency of transmission, avoided repeatedly retransmitting, reduced time delay, professional qos requirement is met, and is final so that the first efficiency of transmission of HS-PDSCH channel has satisfied 10% error block rate requirement.
Description of drawings
Fig. 1 is the downlink transfer flow chart in a specific embodiment of the present invention.
Fig. 2 is the basic structure schematic diagram of the downlink transfer device of continuous packet connectivity technology among the present invention.
Fig. 3 is a kind of structure chart of channel actual mass computing module inside in specific embodiment of the present invention.
Fig. 4 is a kind of structure chart of channel aimed quality computing module inside in specific embodiment of the present invention.
Fig. 5 is a kind of structure chart of downlink transmission power determination module inside in specific embodiment of the present invention.
Fig. 6 is the basic structure schematic diagram of system of the present invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
The present invention proposes the downlink transmission method in a kind of CPC technology, the core concept of the method comprises: for each UE, the CQI that reports according to this UE calculates actual normalization code rate v
r, according to this v
rBe identified for the SINR of indicating channel actual mass
rAccording to pre-assigned semi-continuous scheduling SPS resource, calculate the target normalization code rate v of this UE
t, according to this v
tBe identified for the SINR of indicating channel aimed quality
tAccording to SINR
tAnd SINR
rDifference, determine the power adaptive adjustment amount of this UE; According to the power adaptive adjustment amount of this UE, determine the power of the downlink transfer that this UE is corresponding.
As seen, in the present invention, the downlink transmission power of HS-PDSCH channel can be adjusted according to the channel actual mass that UE reports in the CPC downlink transfer, that is to say that the through-put power size carried out the self adaptation adjustment of power.Like this, when the variations in the actual environment, actual code rate variation can produce with channel quality and contact, come adaptive channel fading to change, improve efficiency of transmission, avoided repeatedly retransmitting, reduced time delay, professional qos requirement is met, and the first efficiency of transmission of HS-PDSCH channel has satisfied 10% error block rate requirement.
Fig. 1 is the downlink transfer flow chart in a specific embodiment of the present invention.Referring to Fig. 1, in a specific implementation of the present invention, the downlink transmission process in the CPC technology mainly may further comprise the steps:
Step 101: adopt the mode of predefine resource carry out the HS-PDSCH channel first transfer resource be the distribution of SPS resource.
Here, the special-purpose predefine stock number of distributing is mainly considered the transmission demand of data package size, such as comprising the large small set of various (such as 4 kinds or more kinds of) TB S in the SPS resource of distributing, SPS reserves resource constantly, the maximum number bits that SPS reservation resource can be carried etc.
Step 102: each UE regularly or according to system side triggers, and the channel quality indication (CQI) that self is obtained reports.
Step 103: according to UE priority arrangement order, select the highest UE of current priority (to be designated as UE
k).
Step 104: judge UE
kReport for the last time the interval of time gap current time of CQI whether greater than predefined time interval GAP, if so, execution in step 105, otherwise, execution in step 106.
Step 105: with UE
kCorresponding CQI
mThe respective value of value when being defined as adopting 1/2 code rate and QPSK, execution in step 107.
Step 106: according to UE
kThe value of the CQI that reports maps out UE
kCorresponding CQI
mValue.
The specific implementation process of this step can adopt multiple mapping mode, can be exemplified as:
Mode one, with UE
kThe value of the CQI that reports for the last time is defined as corresponding CQI
mValue.
Mode two, according to UE
kThe value of the CQI that repeatedly the reports sliding filter value of making even.
In this mode two, a kind of preferred computational methods are
Wherein, p is smoothing factor, 0＜p≤1, CQI
M-1Be described UE
kThe value of the CQI that reports for second from the bottom time.
Above-mentioned dual mode just to this step implementation procedure for example, in the business realizing of reality, this step also exist other according to UE
kThe value of the CQI that reports maps out UE
kCorresponding CQI
mThe method of value, such as, can require adjust the computing formula in the mode two according to practical business, as the value of getting the last CQI that reports for three times be weighted average etc.
Step 107: calculate UE
kCorresponding actual normalization code rate V
r
Actual normalization code rate V
rReflected the code rate that satisfies actual channel conditions.
Just as is known to the person skilled in the art, any one CQI is included in two territories of feeding back on the HS-SICH channel: recommend transmission block size (RTBS) and recommend modulation system (RMF).
Therefore, in this step, can utilize the CQaI that calculates
mSearch the mapping table of CQI and RTBS, obtain corresponding to CQI
mRTBS
m, and further utilize this RTB S
mCalculate the actual normalization code rate v that can reflect that actual channel requires
rA kind of preferred computing formula is:
Wherein, Data
cUE
kThe maximum number bits that ability rating can carry.
Need to prove, above-mentioned steps 106 is at first to calculate UE to step 107
kCQI
m, then tabling look-up obtains UE
kCorresponding RTBS
mValue.In the business realizing of reality, also can adopt other flexible implementations to obtain RTBS
mValue, such as,
The step of above-mentioned steps 106 can accommodation be: according to UE
kThe value of the CQI that reports is at first searched the mapping table of CQI and RTB S, thereby is determined and UE
kThen the value of the RTBS ' that the value of the CQI that reports is corresponding utilizes this RTBS ' to calculate UE
kCorresponding reflection CQI
mRTBS
mValue, computing formula can for:
Wherein, p is smoothing factor, 0＜p≤1, RTBS
M-1Be described UE
kThe value of the RTBS that the value of the CQI that reports for second from the bottom time is corresponding.Like this, in the above-mentioned steps 107, then can directly utilize formula
Calculate UE
kCorresponding actual normalization code rate v
r
Step 108: according to UE
kCorresponding v
rBe identified for the SINR of indicating channel actual mass
r
The ability of each equipment itself just can realize obtaining by link simulation the BLER curve of SINR and different coding speed v.Like this, in this step, can by the SINR of this curve embodiment and the corresponding relation of different coding speed v, determine and UE
kV
rCorresponding SINR
r
Certainly, in practical business implementation procedure of the present invention, also can adopt additive method to determine SINR
r, such as, come according to UE by predefined formula such as weighting formula
kCorresponding v
rDetermine SINR
r
Need to prove, by the processing of above-mentioned steps 104 to step 108, then realized determining that according to the CQI of UE feedback the actual channel decline is on the impact of transmission quality.
Step 109: for the UE that is about to carry out
kFirst biography of SPS, according to the current size that needs the business data packet that transmits, from the large small set of various TB S that sets in advance, select suitable TBS
p
Here, select TBS
pMethod include but not limited to following mode:
Mode A, according to the size of the current business data packet that need to transmit, from the large small set of various TB S that sets in advance, select big or small immediate TB S with this business data packet as TBS
p, that is to say the TBS that selects
pSize and the difference of the size of business data packet minimum.
Mode B, from the large small set of various TB S that sets in advance, select greater than the current minimum TBS of the business data packet size that transmits that needs as TBS
p
In the business realizing of reality, select TBS
pMethod also can require to specify arbitrarily according to practical business.
Step 110: calculate UE
kCorresponding target normalization code rate v
t
Target normalization code rate v
tThe code rate that has reflected system requirements.
In this step, a kind of preferred calculating v
tMethod be:
Wherein, Data
tThat SPS reserves the maximum number bits that resource can be carried.
Step 111: according to UE
kCorresponding v
tBe identified for the SINR of indicating channel aimed quality
t
System equipment producer can obtain the BLER curve of SINR and different coding speed v by the computer link simulation.Like this, in this step, can by the SINR of this curve embodiment and the corresponding relation of different coding speed v, determine and UE
kV
tCorresponding SINR
t
Certainly, in practical business implementation procedure of the present invention, also can adopt additive method to determine SINR
t, such as, come according to UE by predefined formula such as weighting formula
kCorresponding v
tDetermine SINR
t
Need to prove, by the processing of above-mentioned steps 109 to step 111, then realized determining to satisfy the code rate of target call and corresponding object transmission quality requirement according to business data packet size and the good SPS time-slot code channel resource of high-rise preassignment.
Step 112: according to SINR
tAnd SINR
rDifference, determine this UE
kThe power adaptive adjustment amount.
The processing of this step is determined the power adaptive adjustment amount according to aimed quality demand and actual channel transmission quality difference in fact exactly.
The specific implementation process of this step can comprise: calculate Δ SINR=SINR
t-SINR
r, above-mentioned SINR is the dB value.UE
kCode channel number in 1 time slot of this SPS resource is N, then this UE
kThe power adaptive adjustment amount preferably can be 10logN+SINR
t-SINR
r
Step 113: determine UE
kThe pre-transmitting power P of corresponding downlink transfer
t
Here, pre-transmitting power P
tA kind of computing formula preferably can for:
P
t=P
Normal+ 10log (N)+Δ SINR (dBm), wherein, P
NormalBe UE
kThe average single-code channel power of transmission last time, the mean value of the many code channels of multi-slot, why be normalized to single-code channel power, after purpose is to adopt power adaptive to adjust, power when same user accounts for a plurality of time slot may be not identical, after considering the code interleaving randomization, systematic bits can be thought uniform distribution on a plurality of time slots, and UE is related with the performance number foundation after the normalization at the SINR that measures calculating.
Step 114: the pre-transmitting power P corresponding according to other each UE
t(k) value is finally determined current UE
kThe transmitting power of corresponding downlink transfer.
In a preferred implementation of the present invention, need the overall situation to consider the distribution of each UE downlink transmission power and the equilibrium between the system resource.Therefore, can utilize the process of this step to come UE
kThe pre-transmitting power of corresponding downlink transfer is adjusted and is finally determined preferred UE
kThe transmitting power of corresponding downlink transfer.At this moment, a kind of preferred implementation procedure of this step 114 specifically comprises:
Step 1141: according to the principle process of step 104 to step 113, calculate pre-transmitting power P corresponding to other each UE
t(t) value is until user assignment is complete or code channel resource assigns or power resource allocation is complete.
Step 1142: the power sum that all UE of statistics preassignment code channel resource distribute
(linear value).
Step 1143: judge whether to satisfy P
Total＜P
Max, wherein, P
MaxBe the maximum transmission power of base station support, if so, then, execution in step 1144, otherwise, execution in step 1145.
Step 1144: with UE
kThe pre-transmitting power P of corresponding downlink transfer
tValue directly as UE
kThe transmitting power of corresponding downlink transfer finishes the processing procedure of current step 114.
Step 1145: each UE all carries out
(linear value) is with the UE that finally obtains
kP
tValue be defined as UE
kThe transmitting power of corresponding downlink transfer.
Here, each UE P that will obtain according to this step computing formula
tValue be defined as the transmitting power of the actual downstream transmission of self correspondence, like this, the actual gross power of each UE is zoomed in the scope of permission, satisfied system requirements.
So far, the processing procedure of step 114 finishes.
Step 115: according to the final UE that determines
kThe transmitting power of corresponding downlink transfer is carried out the transmission of business data packet.
After this, determine for the first downlink transmission power that carries out follow-up new business packet, that is to say, for process next time, after this step, can also further upgrade the average single-code channel power P of calculating the many code channels of each user's multi-slot
Normal
Need to prove, whenever carrying out a new business packet for UE when first, all according to above-mentioned flow performing single treatment shown in Figure 1, thereby so that the downlink transmission power of UE can carry out the power adaptive adjustment, adaptive channel variation.
The present invention has also proposed the downlink transfer device in a kind of CPC technology simultaneously, and referring to Fig. 2, basic structure and the function of this device comprise:
Channel actual mass computing module is used for for each UE, and the CQI that reports according to this UE calculates actual normalization code rate v
r, according to this v
rBe identified for the SINR of indicating channel actual mass
r
Channel aimed quality computing module is used for according to pre-assigned semi-continuous scheduling SPS resource, calculates the target normalization code rate v of this UE
t, according to this v
tBe identified for the SINR of indicating channel aimed quality
t
The downlink transmission power determination module is used for according to SINR
tAnd SINR
rDifference, determine the power adaptive adjustment amount of this UE, and according to the power adaptive adjustment amount of this UE, determine the power of the downlink transfer that this UE is corresponding.
Fig. 3 is a kind of structure chart of channel actual mass computing module inside in specific embodiment of the present invention, and referring to Fig. 3, a kind of structure and the concrete function of channel actual mass computing module inside comprise: RTBS
mCalculating sub module, v
rCalculating sub module and SINR
rCalculating sub module, wherein,
RTBS
mCalculating sub module is calculated RTBS corresponding to described UE
mConcrete account form is:
Mode one, whether judge the interval of time gap current time that described UE reports CQI for the last time greater than predefined time interval GAP, if so, the CQI that described UE is corresponding then
mThe respective value of value when being defined as adopting 1/2 code rate and QPSK; If not, with CQI
mValue be defined as the value of the CQI that described UE reports for the last time, perhaps,
Wherein, p is smoothing factor, 0＜p≤1, CQ
M-1Value for the described UE inferior CQI that reports second from the bottom; With the CQI that determines
mThe value of corresponding RTBS is as RTBS
mThe value of mode two, the CQI that reports according to described UE is at first searched the mapping table of CQI and RTBS, determines the value of the RTBS ' that the value of the CQI that reports with UE is corresponding, then utilizes this RTBS, calculates reflection CQI corresponding to UE
mRTBS
mValue, computing formula is:
Wherein, p is smoothing factor, 0＜p≤1, RTBS
M-1Value for RTBS corresponding to the value of the described UE inferior CQI that reports second from the bottom;
v
rCalculating sub module is calculated
Data
cIt is the maximum number bits that the UE ability rating can carry;
SINR
rCalculating sub module the SINR that obtains from link simulation and the corresponding relation of different coding speed v, is determined and v
rThe v that calculating sub module calculates
rCorresponding SINR
r
Fig. 4 is a kind of structure chart of channel aimed quality computing module inside in specific embodiment of the present invention.Referring to Fig. 4, a kind of structure of channel aimed quality computing module comprises: transmission block is determined submodule, v
tCalculating sub module and SINR
tCalculating sub module, wherein,
Transmission block is determined submodule, is used for the first data package size that passes according to the SPS of described UE, selects suitable TBS from pre-assigned various transmission block TBS sizes
p
v
tCalculating sub module is used for determining the TBS that submodule calculates according to transmission block
pCalculate
Wherein, Data
tThat SPS reserves the maximum number bits that resource can be carried;
SINR
tCalculating sub module for the SINR that obtains from link simulation and the corresponding relation of different coding speed v, is determined and v
tThe v that calculating sub module calculates
tCorresponding SINR
t
Fig. 5 is a kind of structure chart of downlink transmission power determination module inside in specific embodiment of the present invention.Referring to Fig. 5, a kind of structure of downlink transmission power determination module comprises: power adaptive adjustment amount calculating sub module and P
tCalculating sub module, wherein,
Power adaptive adjustment amount calculating sub module is used for 10logN+SINR
t-SINR
rValue be defined as the power adaptive adjustment amount of this UE, wherein, N is the code channel number of described UE in time slot of this SPS resource;
P
tCalculating sub module is used for calculating P
t=P
Normal+ 10logN+SINR
t-SINR
r, wherein, P
NormalAverage single-code channel power for transmission last time corresponding to the described UE that precomputes; And,
P
tCalculating sub module is directly with the P that calculates
tValue be defined as the power of downlink transfer corresponding to UE; Perhaps, P
tCalculating sub module is at first calculated P corresponding to other each UE
t(k) value is until user assignment is complete or code channel resource assigns or power resource allocation is complete; The power sum of all user assignments of statistics preassignment code channel resource
If P
Total＜P
Max, then carry out described with the P that calculates
tValue be defined as the power of downlink transfer corresponding to UE; P
MaxFor the maximum transmission power of base station support, if P
Total＞P
Max, then calculate UE's
With the P that finally obtains
tValue be defined as the power of downlink transfer corresponding to UE.
Downlink transfer device in the CPC technology that the present invention proposes can adopt various ways to realize, such as, this device is arranged in the base station, namely is a functional device of inside of base station, and perhaps, this device is independent of legacy network equipment etc. for newly-increased special equipment.
In addition, the present invention has also proposed the downlink transmission system in a kind of CPC technology simultaneously, and this system comprises: the downlink transfer device in UE and any one CPC technology of the present invention described above.
Need to prove, in the present invention, business data packet can be to use any one professional packet of SPS resource, such as being VoIP packet or gaming packet etc.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (12)
1. the downlink transmission method in the continuous packet connectivity technology is characterized in that, the method comprises:
A, for each UE, the CQI that reports according to this UE calculates actual normalization code rate v
r, according to this v
rBe identified for the SINR of indicating channel actual mass
r
B, according to pre-assigned semi-continuous scheduling SPS resource, calculate the target normalization code rate v of this UE
t, according to this v
tBe identified for the SINR of indicating channel aimed quality
t
C, according to SINR
tAnd SINR
rDifference, determine the power adaptive adjustment amount of this UE;
D, according to the power adaptive adjustment amount of this UE, determine the power of the downlink transfer that this UE is corresponding;
Wherein, in the steps A, the described CQI that reports according to this UE calculates v
rStep comprise:
A1, RTBS corresponding to the described UE of calculating
m
A2, calculating
Wherein, Data
cIt is the maximum number bits that the UE ability rating can carry;
In the steps A, described according to this v
rDetermine SINR
rStep comprise:
The SINR that obtains from link simulation and the corresponding relation of different coding speed v, determine and v
rCorresponding SINR
r
Wherein, described steps A 1 comprises:
Whether judge the interval of time gap current time that described UE reports CQI for the last time greater than predefined time interval GAP, if so, the CQI that described UE is corresponding then
mThe respective value of value when being defined as adopting 1/2 code rate and QPSK; If not, with CQI
mValue be defined as the value of the CQI that described UE reports for the last time, perhaps,
Wherein, p is smoothing factor, 0＜p≤1, CQI
M-1Value for the described UE inferior CQI that reports second from the bottom; With the CQI that determines
mThe value of corresponding RTBS is as RTBS
m
Perhaps,
The value of the CQI that reports according to described UE is at first searched the mapping table of CQI and RTB S, determines the value of the RTBS ' that the value of the CQI that reports with UE is corresponding, then utilizes this RTBS, calculates reflection CQI corresponding to UE
mRTBS
mValue, computing formula is:
Wherein, p is smoothing factor, 0＜p≤1, RTBS
M-1Value for RTBS corresponding to the value of the described UE inferior CQI that reports second from the bottom;
Described CQI
mThe mapping value that obtains for the value of the CQI that reports according to UE;
Described RTBS
mFor with described CQI
mCorresponding recommendation transmission block size.
2. method according to claim 1 is characterized in that,
Among the step B, the target normalization code rate v of described this UE of calculating
tStep comprise: according to the first data package size that passes of the SPS of described UE, from pre-assigned various transmission block TB S sizes, select suitable TBS
p,
Wherein, Data
tThat SPS reserves the maximum number bits that resource can be carried;
Among the step B, described according to v
tDetermine SINR
tStep comprise: the SINR that obtains from link simulation and the corresponding relation of different coding speed v, determine and v
tCorresponding SINR
t
Described TBS
pFor: the suitable transmission block size of from the large small set of various transmission blocks that sets in advance, selecting.
3. method according to claim 1 is characterized in that,
Among the step C, the step of the power adaptive adjustment amount of described definite this UE comprises: with 10logN+SINR
t-SINR
rValue be defined as the power adaptive adjustment amount of this UE, wherein, N is the code channel number of described UE in time slot of this SPS resource;
Among the step D, the step of the power of the downlink transfer that described definite this UE is corresponding comprises:
Calculate P
r=P
Normal+ 10logN+SINR
t-SINR
r, wherein, P
NormalAverage single-code channel power for transmission last time corresponding to the described UE that precomputes; With the P that calculates
tValue be defined as the power of downlink transfer corresponding to UE.
4. method according to claim 3 is characterized in that, among the step D, is calculating P
tValue after, and with P
tValue be defined as further comprising before the power of downlink transfer corresponding to UE:
Calculate P corresponding to other each UE
t(k) value is until user assignment is complete or code channel resource assigns or power resource allocation is complete;
The power sum of all user assignments of statistics preassignment code channel resource
If P
Total＜P
Max, then carry out described with the P that calculates
tValue be defined as the power of downlink transfer corresponding to UE; P
MaxBe the maximum transmission power of base station support,
If P
Total＞P
Max, then calculate UE's
With the P that finally obtains
tValue be defined as the power of downlink transfer corresponding to UE.
5. the described method of any one in 3 according to claim 1 is characterized in that,
When first for new data packets of a UE execution, trigger and carry out described steps A;
And/or,
Described packet is for using any one professional packet of SPS resource.
6. the downlink transfer device in the continuous packet connectivity technology is characterized in that, comprising:
Channel actual mass computing module is used for for each UE, and the CQI that reports according to this UE calculates actual normalization code rate v
r, according to this v
rBe identified for the SINR of indicating channel actual mass
r
Channel aimed quality computing module is used for according to pre-assigned semi-continuous scheduling SPS resource, calculates the target normalization code rate v of this UE
t, according to this v
tBe identified for the SINR of indicating channel aimed quality
t
The downlink transmission power determination module is used for according to SINR
tAnd SINR
rDifference, determine the power adaptive adjustment amount of this UE, and according to the power adaptive adjustment amount of this UE, determine the power of the downlink transfer that this UE is corresponding;
Wherein, described channel actual mass computing module comprises: RTBS
mCalculating sub module, v
rCalculating sub module and SINR
rCalculating sub module, wherein,
RTBS
mCalculating sub module is calculated RTBS corresponding to described UE
mConcrete account form is:
Mode one, whether judge the interval of time gap current time that described UE reports CQI for the last time greater than predefined time interval GAP, if so, the CQI that described UE is corresponding then
mThe respective value of value when being defined as adopting 1/2 code rate and QPSK; If not, with CQI
mValue be defined as the value of the CQI that described UE reports for the last time, perhaps,
Wherein, p is smoothing factor, 0＜p≤1, CQI
M-1Value for the described UE inferior CQI that reports second from the bottom; With the CQI that determines
mThe value of corresponding RTB S is as RTBS
mThe value of mode two, the CQI that reports according to described UE is at first searched the mapping table of CQI and RTBS, determines the value of the RTB S ' that the value of the CQI that reports with UE is corresponding, then utilizes this RTB S, calculates reflection CQI corresponding to UE
mRTBS
mValue, computing formula is:
Wherein, p is smoothing factor, 0＜p≤1, RTBS
M-1Value for RTB S corresponding to the value of the described UE inferior CQI that reports second from the bottom;
v
rCalculating sub module is calculated
Data
cIt is the maximum number bits that the UE ability rating can carry;
SINR
rCalculating sub module the SINR that obtains from link simulation and the corresponding relation of different coding speed v, is determined and v
rThe v that calculating sub module calculates
rCorresponding SINR
r
Described CQI
mThe mapping value that obtains for the value of the CQI that reports according to UE;
Described RTBS
mFor with described CQI
mCorresponding recommendation transmission block size.
7. device according to claim 6 is characterized in that, described channel aimed quality computing module comprises: transmission block is determined submodule, v
tCalculating sub module and SINR
tCalculating sub module, wherein,
Transmission block is determined submodule, is used for the first data package size that passes according to the SPS of described UE, selects suitable TBS from pre-assigned various transmission block TB S sizes
p
v
tCalculating sub module is used for determining the TBS that submodule calculates according to transmission block
pCalculate
Wherein, Data
tThat SPS reserves the maximum number bits that resource can be carried;
SINR
tCalculating sub module for the SINR that obtains from link simulation and the corresponding relation of different coding speed v, is determined and v
tThe v that calculating sub module calculates
tCorresponding SINR
t
Described TBS
pFor: the suitable transmission block size of from the large small set of various transmission blocks that sets in advance, selecting.
8. according to claim 6 or 7 described devices, it is characterized in that, described downlink transmission power determination module comprises: power adaptive adjustment amount calculating sub module and P
tCalculating sub module, wherein,
Power adaptive adjustment amount calculating sub module is used for 10logN+SINR
t-SINR
rValue be defined as the power adaptive adjustment amount of this UE, wherein, N is the code channel number of described UE in time slot of this SPS resource;
P
tCalculating sub module is used for calculating P
t=P
Normal+ 10logN+SINR
t-SINR
r, wherein, P
NormalAverage single-code channel power for transmission last time corresponding to the described UE that precomputes; And,
P
tCalculating sub module is directly with the P that calculates
tValue be defined as the power of downlink transfer corresponding to UE; Perhaps, P
tCalculating sub module is at first calculated P corresponding to other each UE
t(k) value is until user assignment is complete or code channel resource assigns or power resource allocation is complete; The power sum of all user assignments of statistics preassignment code channel resource
If P
Ttotal＜P
Max, then carry out described with the P that calculates
tValue be defined as the power of downlink transfer corresponding to UE; P
MaxFor the maximum transmission power of base station support, if P
Total＞P
Max, then calculate UE's
With the P that finally obtains
tValue be defined as the power of downlink transfer corresponding to UE.
9. the described device of any one in 7 according to claim 6 is characterized in that, this device is arranged in the base station, perhaps is newly-increased special equipment.
10. device according to claim 8 is characterized in that, this device is arranged in the base station, perhaps is newly-increased special equipment.
11. the downlink transmission system in the continuous packet connectivity technology is characterized in that, this system comprises: UE and such as the downlink transfer device in the described continuous packet connectivity technology of any one in the claim 6 to 7.
12. the downlink transmission system in the continuous packet connectivity technology is characterized in that this system comprises: the downlink transfer device in UE and the continuous packet connectivity technology as claimed in claim 8.
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| CN102083220B (en) * | 2010-10-28 | 2013-05-08 | 中国人民解放军信息工程大学 | Quality of experience index-based power distribution method and system |
| CN102065547B (en) * | 2011-01-20 | 2013-07-10 | 大唐移动通信设备有限公司 | Method and device for judging effective reconfiguration of resources of uplink SPS (Symbolic Programming System) |
| CN110536336B (en) * | 2016-03-25 | 2023-02-21 | 展讯通信（上海）有限公司 | Common-frequency cell measuring method and device in CPC state |
| JP2021502012A (en) | 2017-10-11 | 2021-01-21 | オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． | Power instruction method, network device, terminal device and computer storage medium |
| CN112106398A (en) * | 2018-05-11 | 2020-12-18 | 华为技术有限公司 | Data transmission method and device |
| CN109703008B (en) * | 2019-01-03 | 2021-08-27 | 山东中颖智超数据科技有限公司 | Intelligent additive manufacturing method and device based on big data artificial intelligence analysis |
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| CN1750428A (en) * | 2005-11-02 | 2006-03-22 | 中兴通讯股份有限公司 | High speed shared control channels and method for realizing high speed shared information channel power |
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| CN1394393A (en) * | 2000-08-21 | 2003-01-29 | 皇家菲利浦电子有限公司 | Method for communication of information and apparatus employing method |
| KR20040016330A (en) * | 2002-08-16 | 2004-02-21 | 삼성전자주식회사 | Apparatus for controlling transmission power of high speed shared information channel in time division duplexing code division multiple access communication system using high speed downlink packet access scheme and method thereof |
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