CN101835253B - UE (User Equipment) side uplink power control device and method in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system - Google Patents

Abstract

The invention relates to UE (User Equipment) side uplink power control device and method in a TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system. The UE side uplink power control device comprises an interface module and an uplink power control processing module. The UE side uplink power control method comprises the following steps of: calculating open loop power PDPCH of each uplink time-slot code composite transmission channel CCTrCH of the current subframe when the uplink power control processing module controls the open loop power after receiving the power intensity of a received chip of a main public physical channel; regulating the transmitting power of a corresponding time slot in the next subframe according to the PDPCH; judging whether a downlink time-slot power control command is extracted or not; if so, entering closed-loop power control from the open-loop power control; calculating the closed-loop power of the uplink time slot CCTrCH; and regulating the transmitting power of the corresponding time slot in the next subframe according to the obtained closed-loop power. The invention not only reduces calculation amount, but also increases the power precision, thereby increasing the power control accuracy, improving the call quality and avoiding call drop.

Description

The device and method of UE side uplink power control in the TD-SCDMA system

Technical field

The present invention relates to code division multiple access system, relate in particular to a kind of realization TD-SCDMA (TimeDivision-Synchronous Code Division Multiple Access, the TD SDMA access) device and method of UE (User Equipment, subscriber equipment) side uplink power control in the system.

Background technology

Power control is one of most important requirement in the cellular system.In most systems, base station and UE can both adjust power real-time dynamicly, improve the performance of system.The TD-SCDMA system is an interference limiting system, because near-far interference, the capacity of TD-SCDMA system mainly is subject to the interference between the UE and base station in the system, thereby, if can both reaching when arriving the base station, the signal of each UE guarantees the minimum signal to noise ratio that communication quality is required and keeps system synchronization that then the capacity of TD-SCDMA system will reach maximum.

The measure that power control is taked in order to overcome near-far interference exactly, it is on the basis that indexs such as the reception signal strength signal intensity of UE transmitter terminal or signal to noise ratio are assessed, the change transmitting power compensates path loss and the decline in the wireless channel in good time, thereby both kept communication quality, and can not produce extra interference to other user in the same Radio Resource again.In addition, power control makes the power reduction of UE transmitter, thereby prolongs the service time of battery.

Be example with the uplink closed-loop power control, after the base station receives upward signal from UE, determine the transmitting power whether needs increase or reduce UE according to the criterion of setting, the base station will produce corresponding power control command (TPC) and pass to UE by the downstream feedback passage, and UE receives the transmitting power of adjusting ascending time slot behind the TPC with the closed-loop power control flow process.

For the TD-SCDMA system, the necessary condition of uplink closed-loop power control works fine is: the downstream feedback passage need keep certain communication quality.If the communication quality of downstream feedback passage descends, uplink closed-loop power control will be affected, even lose efficacy.

Equally, if the up transmitting power of UE is low excessively, may influence the up reception of base station, the error rate be risen, even take defeat; If the up transmitting power of UE is too high, again can interference base station to the reception of other UE, the signal to noise ratio that receives other user is reduced, other user also needs to improve transmitting power.Therefore the rational transmitting power of UE is most important to the raising of systematic function.

The control of 3GPP power divides open loop power control and two parts of closed-loop power control.And the power calculation in the open loop power control is the process of a complexity, the different coding transmission channel that refers more particularly to different business (comprises HSDPA (High Speed Downlink Package Access, high-speed downlink packet inserts)) time, power calculation is comparatively complicated, adopt different computational methods, the performance of system is had bigger influence.

Summary of the invention

Technical problem to be solved by this invention is, the device and method of UE side uplink power control in a kind of TD-SCDMA of the realization system is provided.The present invention can improve accuracy and the speech quality of open loop power control, avoids call drop, has provided the solution of odd encoder aggregate channel uplink power control simultaneously.

The invention discloses the device of UE side uplink power control in a kind of TD-SCDMA of the realization system, described device comprises interface module and uplink power control processing module, and is described

The downward special physical channel DPCH configuration that interface module issues for the reception upper strata, uplink special physical channel configuration and Your Majesty be the reception chip power level RSCP of physical channel PCCPCH altogether _PCCPCHAnd be transmitted to described uplink power control processing module;

The uplink power control processing module is used for receiving RSCP _PCCPCHThe Shi Qidong open loop power control is used for extracting the descending time slot power control command TPC of described configuration when receiving the DPCH configuration, is used for changing closed-loop power control over to from open loop power control when extracting descending time slot TPC; Be used for calculating the open-loop/closed-loop power of each ascending time slot coded composite transport channel CCTrCH; Be used for adjusting each ascending time slot in the transmitting power of next subframe.

Described interface module comprises the high-level interface submodule and measures interface sub-module, and is described

The high-level interface submodule: the DPCH configuration and the uplink special physical channel that issue for the reception upper strata dispose and are transmitted to described uplink power control processing module;

Measure interface sub-module: be used for receiving RSCP _PCCPCHAnd be transmitted to described uplink power control processing module.

Described uplink power control processing module comprises that open loop power control submodule, TPC extract numbering submodule and closed-loop power control submodule, and is wherein, described

The open loop power control submodule is used for receiving the RSCP that described measurement interface module is transmitted _PCCPCHThe Shi Qidong open loop power control is for the open loop power that calculates each ascending time slot CCTrCH; Be used for adjusting each ascending time slot in the transmitting power of next subframe according to the open loop power of each ascending time slot CCTrCH;

TPC extracts the numbering submodule, be used for when the DPCH configuration that receives described high-level interface module forwards, extracting the descending time slot TPC of described configuration, and when extracting descending time slot TPC, according to the subframe numbers of correspondence and the channel number of described subframe described descending time slot TPC is numbered, be used for and will send to described closed-loop power control submodule through the descending time slot TPC of numbering;

The closed-loop power control submodule is used for starting closed-loop power control when receiving descending time slot TPC, is used for described descending time slot TPC is mapped to ascending time slot, is used for calculating the closed power of each ascending time slot CCTrCH; Be used for calculating the power control symbol of each ascending time slot and judging the positive and negative of described power control symbol, adjust each ascending time slot in the transmitting power of next subframe according to the closed power of judged result and each ascending time slot CCTrCH.

Described uplink power control processing module also comprises path loss calculation submodule, spreading factor gain calculating sub module, CCTrCH gain calculating sub module and power summation submodule, and is wherein, described

The path loss calculation submodule is used for according to RSCP _PCCPCHWith Your Majesty in the configuration of the described uplink special physical channel transmitting power P of physical channel altogether _PCCPCHCalculate the path loss L of Radio Link _PCCPCH

Spreading factor gain calculating sub module is used for calculating spreading factor gain 10*log[(γ ₁ ²+ γ ₂ ²) * 16];

Coded combination gain calculating sub module is used for calculation code portfolio premium 10*log[β _j ²];

Power summation submodule, be used for when there are at least two CCTrCH in ascending time slot, calculating the CCTrCH open-loop/closed-loop power and.

Described closed-loop power control submodule comprises a TPC mapping block, and described TPC mapping block is used for the descending time slot TPC that receives is mapped to ascending time slot.

The invention also discloses the method for UE side uplink power control in a kind of TD-SCDMA of the realization system, described method is:

The uplink power control processing module receives the RSCP that interface module is transmitted _PCCPCHThe time, enter open loop power control, adopt following formula to calculate the open loop power P of each ascending time slot CCTrCH of current subframe _DPCH:

$P_{\mathrm{DPCH}}={\mathrm{PRX}}_{\mathrm{DPCHdes}}+L_{\mathrm{PCCPCH}}+10*\log [({\mathrm{\γ}}_1^2+{\mathrm{\γ}}_2^2)*16]+10*\log \left[{\mathrm{\β}}_j^2\right]$

Wherein, PRX _DPCHdesTransmitting power for the uplink special physical channel of base station expectation;

And according to P _DPCHAdjust corresponding time slot in the transmitting power of next subframe; Judge whether simultaneously from the DPCH configuration that described interface module is transmitted, to extract descending time slot TPC, if, then enter closed-loop power control from open loop power control, calculate the closed power of described ascending time slot CCTrCH, adjust corresponding time slot in the transmitting power of next subframe according to the closed power that obtains.

After described power control module enters open loop power control, at first calculate 10*log[(γ ₁ ²+ γ ₂ ²) * 16], 10*log[β _j ²] and according to RSCP _PCCPCHAnd P _PCCPCHCalculate L _PCCPCHValue.

Described method is when carrying out open loop power control, if in the described ascending time slot CCTrCH is only arranged, then described ascending time slot is the open loop power value of described CCTrCH at the transmission power level of next subframe; If there are at least two CCTrCH in the described ascending time slot, then described ascending time slot is power and the P of all CCTrCH open loop powers at the transmission power level of next subframe; Described power and P obtain by the following method:

Step a: search the maximum P in the open loop power of all CCTrCH _MaxWith minimum value P _Min

Step b: calculate described P _MaxWith P _MinPoor Pi;

Step c: the size of more described Pi and preset threshold value, if described Pi is more than or equal to described threshold value, then P=P _MaxOtherwise, P=P _Max(1+1/ (10 for+100*log ^(Pi/100))).

After described uplink power control processing module changes closed-loop power control over to, specifically carry out following steps:

Steps A: the sign indicating number Taoist monastic name according to current subframe numbers and described subframe is numbered and is mapped to ascending time slot to the descending time slot TPC that extracts;

Step B: the power control of calculating described ascending time slot CCTrCH meets, if just, then described ascending time slot is that described CCTrCH closed power value adds power adjustment step-length at the transmission power level of next frame; If negative, then described ascending time slot is that described CCTrCH closed power value subtracts power adjustment step-length at the transmission power level of next frame; If zero, then described ascending time slot is described CCTrCH closed power value at the transmission power level of next frame.

The closed power computational methods of described ascending time slot CCTrCH are identical with the computational methods of its open loop power.

If there are at least two CCTrCH in the described ascending time slot, then described ascending time slot the transmission power level of next subframe be all CCTrCH closed powers of corresponding time slot power and, perhaps for the power of all CCTrCH closed powers of corresponding time slot with add/subtract power and adjust step-length, for the power of described CCTrCH closed power with computational methods identical with power and the computational methods of its open loop power.

The present invention has considered the influence of uplink special physical channel configuration to the power control effect when open loop power calculates, namely have a gain to adjust to power, this has not only reduced operand but also has improved the power precision, thereby has improved the accuracy of power control, promote calling quality, avoided call drop.The method of the invention also is applicable to the power adjustment of the many CCTrCH that comprise HSDPA, HSUPA.

Description of drawings

Fig. 1 is the theory diagram of device of the present invention;

Fig. 2 is the overall flow figure of the method for the invention;

Fig. 3 is the flow chart of open loop power control among the present invention;

Fig. 4 is the flow chart of closed-loop power control among the present invention.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, the present invention is described in further details:

As shown in Figure 1, be the principle money figure of UE side uplink power control device in the realization of the present invention TD-SCDMA system, described uplink power control device comprises interface module and uplink power control processing module, and wherein, interface module comprises the high-level interface submodule and measures interface sub-module; The uplink power control processing module comprises that open loop power control submodule, TPC extract numbering submodule, closed-loop power control submodule, path loss calculation submodule, spreading factor gain calculating sub module, coded combination gain calculating sub module and power summation submodule; Wherein,

The high-level interface submodule disposes and is transmitted to the uplink power control processing module for DPCH configuration and the uplink special physical channel that the reception upper strata issues;

Measure interface sub-module: be used for receiving RSCP _PCCPCHAnd be transmitted to described uplink power control processing module;

The open loop power control submodule is used for the RSCP that measures the interface module forwarding receiving _PCCPCHThe Shi Qidong open loop power control is for the open loop power that calculates each ascending time slot CCTrCH; Be used for adjusting each ascending time slot in the transmitting power of next subframe according to the open loop power of each ascending time slot CCTrCH;

TPC extracts the numbering submodule, be used for when the DPCH configuration that receives the high-level interface module forwards, extracting the descending time slot TPC of described configuration, and when extracting descending time slot TPC, according to the subframe numbers of correspondence and the channel number of described subframe described descending time slot TPC is numbered, be used for and will send to the closed-loop power control submodule through the descending time slot TPC of numbering;

The closed-loop power control submodule is used for starting closed-loop power control when receiving descending time slot TPC, is used for described descending time slot TPC is mapped to ascending time slot, is used for calculating the closed power of each ascending time slot CCTrCH; Be used for calculating the power control symbol of each ascending time slot and judging the positive and negative of described power control symbol according to law of great number, and adjust each ascending time slot in the transmitting power of next subframe according to the closed power of judged result and each ascending time slot CCTrCH; This module comprises a TPC mapping block, be used for the descending time slot TPC that will receive and be mapped to corresponding ascending time slot according to the principle of the 5A2.2.2 joint of GPP (3rdGeneration Partnership Project, third generation partner program) standard " 25.221 ";

The path loss calculation submodule is used for according to RSCP _PCCPCHWith Your Majesty in the configuration of the described uplink special physical channel transmitting power P of physical channel altogether _PCCPCHCalculate the path loss L of Radio Link _PCCPCH

Spreading factor gain calculating sub module is used for calculating spreading factor gain 10*log[(γ ₁ ²+ γ ₂ ²) * 16];

Coded combination gain calculating sub module is used for calculation code portfolio premium 10*log[β _j ²];

Power summation submodule, be used for when there are at least two CCTrCH in ascending time slot, calculating the CCTrCH open-loop/closed-loop power power and.

As shown in Figure 2, be the method overall flow figure of UE side uplink power control in the realization of the present invention TD-SCDMA system; In the present embodiment, suppose all have only a CCTrCH on each ascending time slot, specifically comprise the steps:

Step 201: (comprising: whether ascending time slot number, time slot have TPC symbol, the number of TPC symbol, PRX to the high-level interface submodule of interface module if receive the DPCH configuration that the upper strata issues _DPCHdes, P _PCCPCH, uplink power control step-length (Pstep_ul), spreading factor), (comprising: the number of transmission channel, the static parameter of transmission channel (comprise the rate-matched attribute in the uplink special physical channel configuration, the cyclic redundancy size, the number of dynamic transmission form), the dynamic parameter (number of transport blocks of transmission channel, the transmission block size), transfer encoding combination and transmission channel coding index corresponding relation, comprise β, β _j), the data configuration of current transmission (transformat combination indication, transmission channel number, the number of transmission block, the size of transmission block etc.) then is transmitted to the uplink power control processing module; The measurement interface sub-module of interface module is if receive RSCP _PCCPCH, then be transmitted to the uplink power control processing module;

Step 202: the uplink power control processing module is if receive RSCP _PCCPCH, then the open loop power control submodule of uplink power control processing module starts open loop power control;

Step 203: the open loop power control submodule calculates the open loop power P of each ascending time slot CCTrCH of current subframe according to the result of calculation of path loss calculation submodule, spreading factor gain calculating sub module, coded combination gain calculating sub module _DPCH, according to P _DPCHAdjust corresponding time slot in the transmitting power of next subframe; TPC extracts the numbering submodule and extract descending time slot TPC from the DPCH configuration simultaneously, if extract, then execution in step 204; Otherwise, continue execution in step 203;

Corresponding ascending time slot is the open loop power of CCTrCH in the transmitting power of next frame;

Step 204: described descending time slot TPC is numbered, sends to the closed-loop power control submodule then;

Step 205: after the closed-loop power control submodule is received descending time slot TPC, start closed-loop power control;

Step 206: described descending time slot TPC is mapped to corresponding ascending time slot according to the principle of the 5A2.2.2 of GPP (3rd GenerationPartnership Project, third generation partner program) standard " 25.221 " joint;

Step 207: the closed power that calculates described ascending time slot CCTrCH;

Computational methods are identical during with open loop.

Step 208: according to law of great number calculate described ascending time slot power control symbol TPC (i, n);

TPC (i, n) expression is mapped to the TPC of up n subframe i time slot from the TPC of descending n-2 subframe;

Step 209: judge TPC (i, n) positive and negative, if just, execution in step 210; If negative, execution in step 211; If 0, then execution in step 212;

Step 210:CCTrCH closed power value adds power and adjusts step-length as the transmission power level of corresponding ascending time slot at next frame;

Step 211:CCTrCH closed power value subtracts power and adjusts step-length as the transmission power level of corresponding ascending time slot at next frame;

Step 212:CCTrCH closed power value is namely given the transmission power level of corresponding ascending time slot at next frame.

As shown in Figure 3, be open loop power control flow chart when there is a plurality of CCTrCH in current ascending time slot in the method for the invention; Specifically comprise:

Step 301: according to RSCP _PCCPCHAnd P _PCCPCHCalculate L _PCCPCH

L _PCCPCH＝P _PCCPCH-RSCP _PCCPCH

Step 302: the initial open loop power P that calculates each CCTrCH _{DPCH_1}

P _{DPCH_1}＝PRX _DPCHdes+L _PCCPCH

Step 303: calculate 10*log[(γ ₁ ²+ γ ₂ ²) * 16] and to the influence of initial open loop power, obtain middle power P _{DPCH_2}

$P_{\mathrm{DPCH}\_2}=P_{\mathrm{DPCH}\_1}+10*\log [({\mathrm{\γ}}_1^2+{\mathrm{\γ}}_2^2)*16]$

Step 304: calculate 10*log[β _j ²] and to the influence of initial open loop power, obtain the open loop power P of CCTrCH _DPCH

P _DPCH＝P _{DPCH_2}+10*log[β _j ²]

Step 305: calculate CCTrCH open loop power power and;

Step 306: according to power and the transmitting power of adjustment current time slots at next frame.

When closed-loop power control, also there are a plurality of CCTrCH as certain ascending time slot, identical when then its closed power computational methods are with open loop power control, no longer repeat here.

As shown in Figure 4, be the flow chart that calculates CCTrCH power and P among the present invention, comprising:

Step 401: search the maximum P in the open-loop/closed-loop power of all CCTrCH _MaxWith minimum value P _Min

Step 402: calculate described P _MaxWith P _MinPoor Pi;

Step 403: the size of more described Pi and preset threshold value 100, more than or equal to 100, then execution in step 404 as if described Pi; Otherwise, execution in step 405;

Step 404:P=P _Max

Step 405:P=P _Max(1+1/ (10 for+100*log ^(Pi/100))).

In this case, if this sub-frame of uplink carrying out open loop power control, then its transmitting power at next frame be all CCTrCH open loop powers power and; If this sub-frame of uplink is carrying out closed-loop power control, then its transmitting power at next frame is the power of all CCTrCH open loop powers and adds/subtract (determining according to the power control symbol) power and adjusts step-length.

Be a specific embodiment below, suppose:

Down physical channel has 3 time slots, is respectively: it is 0,1 that time slot 4, time slot 5, time slot 6, each time slot have 2 channel codes, and the γ of channel code correspondence is 16, and 1 TPC is arranged on the channel code 0.

Uplink physical channel has 2 time slots, is respectively: time slot 1 and time slot 2, time slot 1 have a physical channel, and channel code is 0, and spreading factor is 8; Time slot 2 has a physical channel, and channel code is 0, and spreading factor is 16.

P _PCCPCH=6dbm, the maximum power of UE: P _UE=24dbm, PRX _DPCHdes=-69dbm, Pstep_ul=1db, β=7.

If RSCP _PCCPCH=-65dbm, then:

L _PCCPCH＝P _PCCPCH-RSCP _PCCPCH

＝6-(-65)＝70(dbm)

P _{DPCH_1}＝PRX _DPCHdes+L _PCCPCH

＝-69+70＝1dbm

Because the spreading factor of time slot 1 is 8, look into 3GPP agreement 25223 as can be known, $\mathrm{\γ}=\sqrt{2}/4,$ So

$P_{\mathrm{DPCH}\_21}=P_{\mathrm{DPCH}\_1}+10*\log [({\mathrm{\γ}}_1^2+{\mathrm{\γ}}_2^2)*16]$

$=1+10*\log [{(\sqrt{2}/4)}^2*16]$

$=1+3=4\left(\mathrm{dbm}\right)$

Because the spreading factor of time slot 2 is 16, look into 3GPP agreement 25223 as can be known, γ=1/4, so

$P_{\mathrm{DPCH}\_22}=P_{\mathrm{DPCH}\_1}+10*\log [({\mathrm{\γ}}_1^2+{\mathrm{\γ}}_2^2)*16]$

$=1+10*\log [{(1/4)}^2*16]$

$=1+0=1\left(\mathrm{dbm}\right)$

3GPP agreement 25223 is looked into as can be known, β in β=7 o'clock _j=8/8, so for time slot 1, P _DPCH1=P _{DPCH_21}+ 10*log[β _j ²]

＝4+10*log[(8/8)^2]

＝4(dbm)

For time slot 2, P _DPCH2=P _{DPCH_22}+ 10*log[β _j ²]

＝1+10*log[(8/8)^2]

＝1(dbm)

The open loop power that is time slot 1 is 4dbm, and the open loop power of time slot 2 is 1dbm; If 56 TPC that all do not receive descending time slot from subframe 1 to subframe, and the RSCP that receives from subframe 1 to 56 _PCCPCHConstant, then from subframe 1 to subframe 56, the transmitting power of time slot 1 all is 4dbm, and the transmitting power of time slot 2 all is 1dbm.

Be located at subframe 57 and receive the TPC of descending time slot, then enter closed-loop power control, begin to calculate closed power, it is constant to establish this moment β value.

Because the ascending power of TPC has the delay of 2 subframes, so consistent with open loop transmit power in the transmitting power of subframe 57,58, namely when 57,58 subframes, the transmitting power of time slot 1 is 4dbm, and the transmitting power of time slot 2 is 1dbm;

Be located at 57 subframes, time slot 4, time slot 5, the TPC that time slot 6 is received is respectively :-1 ,-1,1,

And in 58 subframes, time slot 4, time slot 5, the TPC that time slot 6 is received is respectively :-1,1,1,

According to the mapping relations of agreement,

59 subframes, ascending time slot 1 corresponding 57 subframe descending time slots 4, the TPC of time slot 5 is-1 ,-1;

The TPC of ascending time slot 2 corresponding 57 subframe descending time slots 4, its power control meets and is-1;

60 subframes, the TPC of ascending time slot 1 corresponding 58 subframe descending time slots 4, its power control meets and is-1;

The TPC of ascending time slot 2 corresponding 58 subframe descending time slots 6, it is 1 that its power control meets;

Adopt big number calculating method, then

When 59 frames, time slot 1 decline 1 power control step-length (supposing that the power control step-length is 1dbm), time slot 2 increases by 1 power control step-length, at this moment

Closed power=the 4-1=3 of time slot 1 (dbm),

Closed power=the 1+1=2 of time slot 2 (dbm)

When 60 subframes, 1 power control step-length of time slot 1 decline, time slot 2 increases by 1 power control step-length

Closed power=the 3-1=2 of time slot 1 (dbm)

Closed power=the 2+1=3 of time slot 2 (dbm)

Suppose that in addition time slot 1 also has the corresponding ascending control channel of a high speed business. channel code is 2, and spreading factor is 16, and then when the 59th subframe, transmitting power is 3dbm, is 3dbm when 60 subframes.

When the 59th, 60 subframes, time slot 1 has 2 CCTrCH need launch information so, need sue for peace to them, then:

The summation of 59 subframe power is as follows:

2 CCTrCH are got maximum: Pmax=max (3,3)=3

2 CCTRCH are got minimum value: Pmin=min (3,3)=3

Maximizing and minimum value poor: Pi=Pmax-Pmin=3-3=0,

Because of Pi less than 100, so P=P _Max(1+1/ (10 for+100*log ^(Pi/100)))

＝3+100*log(1+1/(10 ^(0/100)))

＝3+3＝6(dbm)

The summation of 60 subframe power is as follows:

2 CCTRCH are got maximum: Pmax=max (2,3)=3

2 CCTRCH are got minimum value: Pmin=min (2,3)=2

Maximizing and minimum value poor: Pi=Pmax-Pmin=3-2=1

Because of Pi less than 100, so P=P _Max(1+1/ (10 for+100*log ^(Pi/100)))

＝3+100*log(1+1/(10 ^(1/100)))

＝3+2.5＝5.5(dbm)

In the 60th subframe, decimal has appearred in power calculation, and agreement regulation will be accurate to 0.5db, so the present invention enlarged 10 times to power calculation, can not bring influence to precision.

The above is preferred embodiment of the present invention only, is not for restriction protection scope of the present invention.Should be understood that; concerning the those of ordinary skill in field, the technology of the present invention place; can be equal to accordingly according to technical scheme of the present invention and design thereof and change or replace, and all these changes or replacement, all should belong to the protection range of claims of the present invention.

Claims (11)

1. a device of realizing UE side uplink power control in the TD-SCDMA system is characterized in that, described device comprises interface module and uplink power control processing module, and is described

The downward special physical channel DPCH configuration that interface module issues for the reception upper strata, uplink special physical channel configuration and Your Majesty be the reception chip power level RSCP of physical channel PCCPCH altogether _PCCPCHAnd be transmitted to described uplink power control processing module;

The uplink power control processing module is used for receiving RSCP _PCCPCHThe Shi Qidong open loop power control is used for extracting the descending time slot power control command TPC of described configuration when receiving the DPCH configuration, is used for changing closed-loop power control over to from open loop power control when extracting descending time slot TPC; Be used for calculating the open-loop/closed-loop power of each ascending time slot coded composite transport channel CCTrCH; Be used for adjusting each ascending time slot in the transmitting power of next subframe.

2. the device of realizing UE side uplink power control in the TD-SCDMA system as claimed in claim 1 is characterized in that, described interface module comprises the high-level interface submodule and measures interface sub-module, and is described

The high-level interface submodule: the DPCH configuration and the uplink special physical channel that issue for the reception upper strata dispose and are transmitted to described uplink power control processing module;

Measure interface sub-module: be used for receiving RSCP _PCCPCHAnd be transmitted to described uplink power control processing module.

3. the device of realizing UE side uplink power control in the TD-SCDMA system as claimed in claim 2 is characterized in that, described uplink power control processing module comprises that open loop power control submodule, TPC extract numbering submodule and closed-loop power control submodule, and is wherein, described

The open loop power control submodule is used for receiving the RSCP that described measurement interface sub-module is transmitted _PCCPCHThe Shi Qidong open loop power control is for the open loop power that calculates each ascending time slot CCTrCH; Be used for adjusting each ascending time slot in the transmitting power of next subframe according to the open loop power of each ascending time slot CCTrCH;

TPC extracts the numbering submodule, be used for when the DPCH configuration that receives described high-level interface submodule forwarding, extracting the descending time slot TPC of described configuration, and when extracting descending time slot TPC, according to the subframe numbers of correspondence and the channel number of described subframe described descending time slot TPC is numbered, be used for and will send to described closed-loop power control submodule through the descending time slot TPC of numbering;

The closed-loop power control submodule is used for starting closed-loop power control when receiving descending time slot TPC, is used for described descending time slot TPC is mapped to ascending time slot, is used for calculating the closed power of each ascending time slot CCTrCH; Be used for calculating the power control symbol of each ascending time slot and judging the positive and negative of described power control symbol, adjust each ascending time slot in the transmitting power of next subframe according to the closed power of judged result and each ascending time slot CCTrCH.

4. the device of UE side uplink power control in the realization as claimed in claim 3 TD-SCDMA system, it is characterized in that, described uplink power control processing module also comprises path loss calculation submodule, spreading factor gain calculating sub module, coded combination gain calculating sub module and power summation submodule, wherein, described

The path loss calculation submodule is used for according to RSCP _PCCPCHWith Your Majesty in the configuration of the described uplink special physical channel transmitting power P of physical channel altogether _PCCPCHCalculate the path loss L of Radio Link _PCCPCH

Spreading factor gain calculating sub module is used for calculating the spreading factor gain Described γ ₁And γ ₂Be weighted factor; Described weighted factor γ ₁, γ ₂Value determined by the spreading factor on the corresponding DPCH;

Coded combination gain calculating sub module is used for the calculation code portfolio premium

Described β _jIt is the gain factor of j transformat;

Power summation submodule, be used for when there are at least two CCTrCH in ascending time slot, calculating the CCTrCH open-loop/closed-loop power and.

5. the device of realizing UE side uplink power control in the TD-SCDMA system as claimed in claim 3 is characterized in that described closed-loop power control submodule comprises a TPC mapping block, and described TPC mapping block is used for the descending time slot TPC that receives is mapped to ascending time slot.

6. method that realizes UE side uplink power control in the TD-SCDMA system is characterized in that described method is:

The uplink power control processing module receives the reception chip power level RSCP that interface module is transmitted _PCCPCHThe time, enter open loop power control, adopt following formula to calculate the open loop power P of each ascending time slot CCTrCH of current subframe _DPCH:

$P_{\mathrm{DPCH}}={\mathrm{PRX}}_{\mathrm{DPCHdes}}+L_{\mathrm{PCCPCH}}+10*\log [({\mathrm{\γ}}_1^2+{\mathrm{\γ}}_2^2)*16]+10*\log \left[{\mathrm{\β}}_j^2\right]$

Wherein, PRX _DPCHdesBe the transmitting power of the uplink special physical channel of base station expectation, described L _PCCPCHBe the path loss of Radio Link, described β _jBe the gain factor of j transformat, described γ ₁And γ ₂Be weighted factor, described weighted factor γ ₁, γ ₂Value determined by the spreading factor on the corresponding DPCH;

And according to P _DPCHAdjust corresponding time slot in the transmitting power of next subframe; Judge whether simultaneously from the DPCH configuration that described interface module is transmitted, to extract descending time slot TPC, if, then enter closed-loop power control from open loop power control, calculate the closed power of described ascending time slot CCTrCH, adjust corresponding time slot in the transmitting power of next subframe according to the closed power that obtains.

7. the method that realizes UE side uplink power control in the TD-SCDMA system as claimed in claim 6 is characterized in that, after described uplink power control processing module enters open loop power control, at first calculates $10*\log [({\mathrm{\γ}}_1^2+{\mathrm{\γ}}_2^2)*16],10*\log \left[{\mathrm{\β}}_j^2\right]$ And according to RSCP _PCCPCHAnd P _PCCPCHCalculate L _PCCPCHValue.

8. the method for UE side uplink power control in the realization as claimed in claim 6 TD-SCDMA system, it is characterized in that, when carrying out open loop power control, if in the described ascending time slot CCTrCH is only arranged, then described ascending time slot is the open loop power value of described CCTrCH at the transmission power level of next subframe; If there are at least two CCTrCH in the described ascending time slot, then described ascending time slot is power and the P of all CCTrCH open loop powers at the transmission power level of next subframe; Described power and P obtain by the following method:

Step a: search the maximum P in the open loop power of all CCTrCH _MaxWith minimum value P _Min

Step b: calculate described P _MaxWith P _MinPoor Pi;

Step c: the size of more described Pi and preset threshold value, if described Pi is more than or equal to described threshold value, then P=P _MaxOtherwise, P=P _Max(1+1/ (10 for+100*log ^(Pi/100))).

9. the method that realizes UE side uplink power control in the TD-SCDMA system as claimed in claim 6 is characterized in that, after described uplink power control processing module changes closed-loop power control over to, specifically carries out following steps:

Steps A: the sign indicating number Taoist monastic name according to current subframe numbers and described subframe is numbered and is mapped to ascending time slot to the descending time slot TPC that extracts;

Step B: the power control of calculating described ascending time slot CCTrCH meets, if just, then described ascending time slot is that described CCTrCH closed power value adds power adjustment step-length at the transmission power level of next frame; If negative, then described ascending time slot is that described CCTrCH closed power value subtracts power adjustment step-length at the transmission power level of next frame; If zero, then described ascending time slot is described CCTrCH closed power value at the transmission power level of next frame.

10. as claim 6 or the 9 described methods that realize UE side uplink power control in the TD-SCDMA system, it is characterized in that the closed power computational methods of described ascending time slot CCTrCH are identical with the computational methods of its open loop power.

11. the method that realizes UE side uplink power control in the TD-SCDMA system as claimed in claim 9, it is characterized in that, if there are at least two CCTrCH in the described ascending time slot, then described ascending time slot the transmission power level of next subframe be all CCTrCH closed powers of corresponding time slot power and, perhaps for the power of all CCTrCH closed powers of corresponding time slot with add/subtract power and adjust step-length, for the power of described CCTrCH closed power with computational methods identical with power and the computational methods of its open loop power.

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