CN101174858A - Power control method and power controller - Google Patents
Power control method and power controller Download PDFInfo
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- CN101174858A CN101174858A CNA2006101142325A CN200610114232A CN101174858A CN 101174858 A CN101174858 A CN 101174858A CN A2006101142325 A CNA2006101142325 A CN A2006101142325A CN 200610114232 A CN200610114232 A CN 200610114232A CN 101174858 A CN101174858 A CN 101174858A
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Abstract
The present invention discloses a power control method comprising that: A. a special channel is arranged in the physical channel as the basic channel; B. the power of the basic channel is controlled and then the power value is obtained; C. based on the power value obtained in the step B, the powers of other channels in the physical channel are regulated. The method provided by the present invention realizes a complete power control plan in physical channel of HSUPA. In addition, the present invention also provides a power control device. With the method and the device provided by the present invention for power control, the special channel which has a large data flow is taken as the basic channel and the feedback efficiency of power control is promoted, the power control function is ensure; moreover, the use of HSUPA technology is guaranteed.
Description
Technical field
The present invention relates to mobile communication technology, be specifically related to a kind of Poewr control method and output control device.
Background technology
The high-speed packet upstream data inserts the sister technology of (HSUPA) technology as the descending access of high-speed packet (HSDPA), makes universal mobile telecommunications system (UMTS) more powerful and perfect in the ability of data transmission.HSUPA can carry the application such as video flowing, conference telephone, real-time game, music, Email and multimedia message of DVD quality, compares dedicated channel (DCH, Dedicated Channel), and HSUPA can obtain higher user's throughput.Simultaneously, HSUPA can also provide differentiated service more easily, and the user of different priorities obtains different service quality, and high-priority users can be assigned with higher bandwidth and more resources, enjoys better service.
In UMTS, power is controlled at power consumption, power system capacity, presence of intercell interference inhibition and reduces on the near-far interference and playing the part of very important role.But, in existing HSUPA technology, also do not have complete power control techniques at physical channel among the HSUPA.This makes the HSUPA technology well not used, and has influenced the serviceability of HSUPA technology.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of Poewr control method, uses this method to carry out complete power control to the physical channel in the HSUPA technology.
In addition, another main purpose of the present invention is to provide a kind of output control device, uses this device and can carry out complete power control to the physical channel in the HSUPA technology.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of Poewr control method comprises:
A, special-purpose channel is set in the physical channel as reference channel;
B, described reference channel is carried out power control, obtain the performance number after the control of reference channel power;
C, according to the performance number that obtains among the step B, adjust the power of other channels in the physical channel.
Preferably, among the step B, described reference channel is carried out open Loop Power control.
Preferably, among the step B, described reference channel is carried out closed power control.
Preferably, this method further comprises: the sir target value is set;
Wherein, described reference channel is carried out closed power control, the performance number that obtains after the power control comprises:
The signal to noise ratio SIR of the receiving terminal measuring basis channel of reference channel, the sir target value of current SIR that obtains and setting is compared, when the SIR that obtains greater than the sir target value, then the transmitting terminal to reference channel sends the reduction indication, described transmitting terminal is then according to reducing indication, the transmitting power of reference channel is reduced a step-length Step, obtain carrying out the performance number after the power control; When the SIR that obtains less than the sir target value, then send and improve indication to the transmitting terminal of reference channel, described transmitting terminal is then according to improving indication, and the transmitting power of reference channel is improved a step-length Step, obtains carrying out the performance number after the power control.
Preferably, this method further comprises the wrong frame per second that sets up standard;
The receiving terminal of reference channel estimates to obtain wrong frame per second to the data of transmitting in the reference channel, and the wrong frame per second that obtains and the wrong frame per second of standard are compared, and when the wrong frame per second of the wrong frame per second overgauge that obtains, then improves described sir target value; When the wrong frame per second that obtains during, then reduce described sir target value less than the wrong frame per second of standard.
Preferably, the dedicated channel in the physical channel opposite with the reference channel direction is set to reverse reference channel, and the power control command TPC symbol by described reverse reference channel carries described reduction indication or improves indication.
Preferably, described reference channel is the enhancing mixed automatic re-transmission indicating channel E-HICH of the automatic request retransmission HARQ process affirmation of all up mixing of carrying UE/non-affirmation ACK/NACK response;
Among the step C, the power of other channels is for adjusting the power of other channels in the down physical channel in the described adjustment physical channel.
Preferably, described down physical channel comprises enhancing absolute grant channel E-AGCH; Among the step C,
The power of described adjustment E-AGCH channel is: the performance number of power control back E-HICH channel is added the power excursion of E-HICH channel and E-AGCH interchannel, obtain the power after the E-AGCH channel adjustment.
Preferably, described down physical channel comprises downward special physical channel DPCH; Among the step C, the power of other channels comprises in the described adjustment down physical channel: the power of adjusting descending DPCH channel;
The power of the descending DPCH channel of described adjustment is: the power excursion, the β that the performance number of power control back E-HICH channel are added E-HICH channel and descending DPCH interchannel
DPCH, TFCIAnd γ
SF, obtain the power after the E-HICH channel adjustment;
Wherein, β
DPCH, TFCIFor being the gain factor of the selected transformat correspondence of descending DPCH; γ
SFThe gain factor of spreading factor correspondence.
Preferably, described reference channel is non-scheduling E-PUCH channel; Among the step C, the power of other channels is for adjusting the power of other channels in the uplink physical channel in the described adjustment physical channel.
Preferably, described uplink physical channel comprises: the scheduling E-PUCH channel; Among the step C,
The power of described adjustment scheduling E-PUCH channel comprises: the performance number of the non-scheduling E-PUCH channel after the power control is added β
E-TFCI, γ
SFAnd K
E-PUCH, obtain the power after the scheduling E-PUCH channel adjustment;
Wherein, β
E-TFCIBe that selected transformat combination is indicated after the scheduling E-PUCH physical resource and modulation type of E-TFCI, distribution, with respect to the gain index of scheduling E-PUCH channel reference power normalization; γ
SFIt is the gain factor of the spreading factor correspondence selected; K
E-PUCHIt is the scheduling E-PUCH channel constant that the network side configuration is arranged.
Preferably, described uplink physical channel comprises the E-RUCCH channel; Among the step C,
The power of described adjustment E-RUCCH channel is: the performance number of the non-scheduling E-PUCH channel after the power control is added the power excursion of E-RUCCH channel and non-scheduling E-PUCH interchannel, obtain the power after the E-RUCCH channel adjustment.
Preferably, described reference channel is: up DPCH channel; Among the step C, the power of other channels is in the described adjustment physical channel: the power of adjusting other channels in the uplink physical channel.
Preferably, described uplink physical channel comprises the scheduling E-PUCH channel; Among the step C,
The power of described adjustment scheduling E-PUCH channel comprises: the power excursion, the β that the performance number of the up DPCH channel after the power control are added up DPCH channel and scheduling E-PUCH interchannel
E-TFCI, γ
SFAnd K
E-PUCH, obtain the power after the scheduling E-PUCH channel adjustment;
Wherein, β
E-TFCIBe to select after the scheduling E-PUCH physical resource and modulation type of E-TFCI, distribution, with respect to the gain index of scheduling E-PUCH channel reference power normalization; γ
SFIt is the gain factor of the spreading factor correspondence selected; K
E-PUCHIt is the scheduling E-PUCH channel constant that the network side configuration is arranged.
Preferably, described uplink physical channel comprises the E-RUCCH channel; Among the step C,
The power of described adjustment E-RUCCH channel is: the performance number of the up DPCH channel after the power control is added the power excursion of E-RUCCH channel and up DPCH interchannel, obtain the power after the E-RUCCH channel adjustment.
The present invention also provides a kind of output control device, and this device comprises:
Power control unit is used for the reference channel of the special-purpose channel conduct of physical channel is carried out power control, obtains the performance number after reference channel is carried out power control;
Power adjustment unit is used for the performance number according to the described reference channel of power control unit acquisition, adjusts the power of other channels in the physical channel.
Preferably, described power control unit comprises:
The power monitoring unit is used for determining whether the power of reference channel needs to adjust, and when needs are adjusted, indicates to power acquiring unit transmission power control;
The power acquiring unit is used for the power control indication according to the power monitoring unit, obtains adjusted power.
Preferably, this device further comprises:
The reference channel transmitter unit is used for sending data on reference channel;
The reference channel receiving element is used for receiving data on reference channel;
Wherein,
The power monitoring unit, the DATA REASONING that receives according to reference channel obtains SIR, and SIR and the sir target value that obtains compared, and sends the power control indication that reduces or improve reference channel to the power acquiring unit;
The power acquiring unit, the power control indication according to the power monitoring unit obtains adjusted power; And according to the transmitting power of described adjusted power control reference channel transmitter unit.
Preferably, this device further comprises:
Oppositely the reference channel transmitter unit is used for when reverse reference channel receiving element sends data, carries the power control indication that the power monitoring unit sends to the power acquiring unit;
Oppositely the reference channel receiving element is used to receive the power control indication of carrying when reverse reference channel transmitter unit sends data, and sends to the power acquiring unit.
A kind of Poewr control method provided by the present invention is by being provided with dedicated channel as reference channel in physical channel; According to institute's reference channel being carried out power control, obtain the performance number after reference channel power is controlled; And then, adjust the power of other channels in the physical channel according to the described performance number that obtains, therefore realized the complete power control scheme of physical channel among the HSUPA.In addition, the present invention also provides a kind of device of power control.In the method and device of power control provided by the invention, owing to use the bigger dedicated channel of data traffic, therefore improved the feedback efficiency of power control as reference channel, guaranteed power control performance, promoted the use of HSUPA technology.
Description of drawings
To make clearer above-mentioned and other feature and advantage of the present invention of those of ordinary skill in the art by describe exemplary embodiment of the present invention in detail with reference to accompanying drawing below, in the accompanying drawing:
Fig. 1 is the structure chart of output control device of the present invention;
Fig. 2 is the flow chart of a preferred embodiment of the present invention method;
Fig. 3 is E-PUCH structure of time slot figure in a preferred embodiment of the present invention;
Fig. 4 is E-HICH structure of time slot figure in a preferred embodiment of the present invention;
Fig. 5 is the concrete structure figure of a preferred embodiment of the present invention device.
Embodiment
In Poewr control method of the present invention, special-purpose channel is set in the physical channel as reference channel; Described reference channel is carried out power control, obtain the performance number after reference channel power is controlled; According to the described performance number that obtains reference channel, adjust the power of other channels in the physical channel again.
In the present invention, the reference channel of setting can be the dedicated channel in the down physical channel, is called descending reference channel, utilizes the performance number after descending reference channel is carried out power control, adjusts other channels in the down physical channel; In addition, a dedicated channel in the uplink physical channel can also be set, be called up reference channel, utilize the performance number of up reference channel after power control, adjust other channels in the uplink physical channel as reference channel.
Preferably, also descending reference channel and up reference channel can be set simultaneously, be used for adjusting respectively other channels in the down physical channel and other channels in the uplink physical channel.
Here, the method that described reference channel is carried out power control can be closed power control or open Loop Power control or other Poewr control methods.
In the present invention, variable power with reference channel, the variable power that is equal to other channels in the physical channel therefore just can be according to the performance number of the reference channel that obtains after the power control with according to the power excursion of other interchannels in reference channel and the physical channel or other channel powers in other corresponding relations adjustment physical channel.
The power excursion of interchannel described here just is meant the difference between initial two the physical channel reference transmit power that are provided with of network side.
In the present invention, descending reference channel can be the enhancing mixed automatic re-transmission indicating channel (E-HICH) of carrying user terminal (UE) the automatic request retransmission of all up mixing (HARQ) process affirmations/non-affirmations (ACK/NACK) response or be the downward special physical channel (DPCH) of user distribution; Up reference channel can be non-scheduling enhancing physics up channel (E-PUCH) or the up DPCH channel that distributes for UE.
In addition, the present invention also provides a kind of output control device, and this apparatus structure comprises as shown in Figure 1: power control unit 10 and power adjustment unit 11.The reference channel of special-purpose channel conduct is carried out power control in 10 pairs of physical channels of power control unit, obtains the performance number after reference channel is carried out power control.Power adjustment unit 11 is adjusted the power of other channels in the physical channel according to the performance number of the described reference channel of power control unit 10 acquisitions.
In power control unit 10, can further include: power monitoring unit 101 and power acquiring unit 102.Wherein, power monitoring unit 101 determines that whether the power of reference channel needs to adjust, and when needs are adjusted, indicates to power acquiring unit 102 transmission power control; Power acquiring unit 102 obtains adjusted power according to the power control indication of power monitoring unit 101.
Wherein, power monitoring unit, power acquiring unit and power adjustment unit, can be used as descending power monitoring unit, descending power acquiring unit and descending power adjustment unit, be used for carrying out performance number after the power control, adjust other channels in the down physical channel according to descending reference channel; Also can be used as ascending power monitoring unit, ascending power acquiring unit and ascending power adjustment unit, carry out performance number after the power control, adjust other channels in the uplink physical channel according to up reference channel.
Obviously, output control device among the present invention, can both comprise descending power monitoring unit, descending power acquiring unit and descending power adjustment unit, comprise ascending power monitoring unit, ascending power acquiring unit and ascending power adjustment unit again, thereby can carry out performance number after the power control according to last/descending reference channel, adjust corresponding on/other channels in the down physical channel.
Fig. 2 is the flow chart of a preferred embodiment of the present invention, E-HICH channel with all ascending HARQ course ACK/NACK of carrying UE response has been described as descending reference channel, non-scheduling E-PUCH channel is as up reference channel, utilize the technology of closed power control, last/following physical channel is carried out the method for power control.
In this preferred embodiment, suppose communicating by letter between base station and the UE, send data with the base station by the E-HICH channel and begin, a closed power of E-HICH channel and non-scheduling E-PUCH channel is controlled to be in the example explanation/method that following power is controlled.The idiographic flow of this preferred embodiment is as shown in Figure 2:
Step 201: the reference power of the E-HICH channels transmit that the base station pre-sets according to network side sends data by the E-HICH channel.
Step 202:UE receives the signal to noise ratio of DATA REASONING E-HICH channel this moment of base station transmission from the E-HICH channel.
Step 203:UE compares signal to noise ratio (SIR) that measures in the step 202 and the sir target value that network side pre-sets, and obtains the power adjustment indication of E-HICH channel.
For example, when the SIR that measures greater than the sir target value, then indication reduces the transmitted power of E-HICH channel; When the SIR that measures equals the sir target value, then do not deal with; When the SIR that measures less than the sir target value, then indication improves the transmitted power of E-HICH channel.
Step 204: when UE need send data by non-scheduling E-PUCH channel,, the wherein value of power control command (TPC) symbol is set, and the data that will set the TPC symbol send by non-scheduling E-PUCH channel then according to the indication in the step 203.
For example, indication reduces the transmitted power of E-HICH channel, the TPC value then is set is down; Indication improves the transmitted power of E-HICH channel, the TPC value then is set is up.
Step 205: base station measurement obtains the SIR of non-scheduling E-PUCH channel, and the sir target value that SIR and network side are pre-set compares, and obtains the power adjustment indication of non-scheduling E-PUCH channel.
When the SIR that measures greater than the sir target value, then indication reduces the transmitted power of non-scheduling E-PUCH channel; When the SIR that measures equals the sir target value, then do not deal with; When the SIR that measures less than the sir target value, then indication improves the transmitted power of non-scheduling E-PUCH channel.
Here, the employed sir target value of non-scheduling E-PUCH channel can be identical with the employed sir target value of E-HICH channel, also can be inequality.
Step 206: the base station receives the data that UE sends from non-scheduling E-PUCH channel, obtains the wherein value of TPC symbol, according to the value of TPC symbol, adjusts the transmitting power next time of E-HICH channel.
For example, when the TPC value of symbol was down, then the base station reduced a step-length (Step) on the basis of this E-HICH channel emission power, promptly on the basis of step 201, obtains E-HICH channel transmitting power next time; When the TPC value of symbol was up, then the base station increased a Step on the basis of this E-HICH channel emission power, obtains E-HICH channel transmitting power next time.
Here, Step is that network side pre-sets, according to the value of the power of required reduction of the value of TPC symbol or raising.
Here, step 206 also can be carried out before step 205.
Step 207: other channels in the down physical channel are adjusted according to the performance number of adjusting the E-HICH channel that obtains in the step 206 in the base station.
When needs were adjusted in the same emission cycle, during enhancing absolute grant (E-AGCH) channel of down physical channel, the transmitted power of then adjusting back E-AGCH channel is:
P
E-HICH+Δ
EAGCH-EHICH；
Wherein, P
E-HICHPerformance number for adjusted E-HICH channel; Δ
EAGCH-EHICHBe the power excursion of E-HICH channel and E-AGCH interchannel, i.e. the E-HICH channel of network side setting and the difference between the E-AGCH channel reference transmitting power.When the power adjustment that obtains the E-AGCH channel, in the emission cycle identical, just can launch, and then realize power control the E-AGCH channel with the power adjustment of the E-AGCH channel that obtains with E-HICH.
Step 208: when the base station needs to send data by the E-HICH channel once more, then indicate the TPC symbol that is provided with in the current data to be sent according to the power control that obtains in the step 205, and, this E-HICH channel transmitting power adjusted according to obtaining in the step 206, send current data to be sent by the E-HICH channel.
When the transmitted power of the non-scheduling E-PUCH channel of indication reduction, the TPC value then is set is down; When the transmitted power of the non-scheduling E-PUCH channel of indication raising, the TPC value then is set is up.
Step 209:UE receives the data that the base station sends from the E-HICH channel, obtains the wherein value of TPC symbol, according to the value of TPC symbol, adjusts the transmitting power next time of non-scheduling E-PUCH channel.
For example, when the TPC value of symbol was down, then UE reduced a step-length (Step) on the basis of this non-scheduling E-PUCH channel emission power, promptly on the basis of step 204, obtained non-next time scheduling E-PUCH channel transmitting power; When the TPC value of symbol was up, then the base station increased a Step on the basis of this non-scheduling E-PUCH channel emission power, obtains non-next time scheduling E-PUCH channel transmitting power.
Here, Step is that network side pre-sets, according to the value of the power of required reduction of the value of TPC symbol or raising.The Step that is used to adjust non-scheduling E-PUCH channel transmitting power and E-HICH channel generation power can be identical, also can be inequality.
Step 210:UE adjusts other channels in the uplink physical channel according to the performance number of adjusting the non-scheduling E-PUCH channel that obtains in the step 209.
When needs were adjusted the scheduling E-PUCH channel in the uplink physical channel and strengthen at random upstream control signaling (E-URCCH) channel, concrete method was as described below.
Value after the scheduling E-PUCH channel adjustment is:
P
nschd，ebase+β
E-TFCI+γ
SF+K
E-PUCH；
Wherein, P
Nschd, ebaseBe the performance number of adjusted non-scheduling E-PUCH channel, β
E-TFCIBe that selected transformat combination is indicated after (E-TFCI), the E-PUCH physical resource that distributes and the modulation type, with respect to the gain index of scheduling E-PUCH channel reference power normalization; γ
SFIt is the gain factor of the spreading factor correspondence selected; K
E-PUCHA relevant constant of QoS that flows by high-level signaling configuration, with MAC-d on being mapped to E-DCH.Because the reference power value of non-scheduling E-PUCH channel and scheduling E-PUCH channel is identical, so can add some factors according to the performance number after the non-scheduling E-PUCH channel adjustment here, promptly can obtain the performance number after the scheduling E-PUCH channel adjustment.
Value after the E-URCCH channel adjustment is:
P
nschd，ebase+Δ
E-RUCCH-nschd；
Wherein, P
Nschd, ebasePerformance number for adjusted non-scheduling E-PUCH channel; Δ
E-RUCCH-nschdPower excursion for E-RUCCH channel and non-scheduling E-PUCH interchannel.
Step 211: when UE needs to send data by non-scheduling E-PUCH channel once more, then, send data by non-scheduling E-PUCH channel according to obtaining adjusted non-scheduling E-PUCH channel transmitting power in the step 209.
So far, this preferred embodiment is descending reference channel with the E-HICH channel, and non-scheduling E-PUCH channel is up reference channel, has realized a power control of physical channel in the HSUPA technology.
In this preferred embodiment,, therefore when UE receives the data that send by the E-HICH channel once more, do not carry out the measurement of E-HICH channel signal to noise ratio owing to be to describe a power control.
But in actual applications, when UE receives the data that send by the E-HICH channel at every turn, all to carry out the measurement of E-HICH channel signal to noise ratio, return corresponding power control indication to the base station, and according to the non-next time scheduling E-PUCH channel transmitting power of the indication adjustment of base station; Identical with UE, when the base station receives the data that send by non-scheduling E-PUCH channel at every turn, all to carry out the measurement of non-scheduling E-PUCH channel signal to noise ratio, return corresponding power control indication, and adjust E-HICH channel transmitting power next time according to the indication of UE to UE.
In order to reach better power control effect, if there are not data on non-scheduling E-PUCH channel, to send, this moment is according to scheduling and non-scheduling interoperability criterion, also not having data need send on the scheduling E-PUCH channel, and so non-scheduling E-PUCH channel can enter discontinuous transmission (DTX) pattern.Equally, if need to transmit without any the ACK/NACK of scheduling and non-dispatching process, the E-HICH channel also will enter the DTX pattern.Because closed power control is that the snr measurement according to physical channel obtains, and therefore has frequent data interaction at channel, can improve the feedback efficiency of power control, improves the performance of power control.
Simultaneously, convergence and performance for further guaranteed output control, preferably, the scheduling resource that does not distribute the E-PUCH channel when the base station for UE, and not having this moment the E-PUCH channel data of non-scheduling to need to send yet, Tiao Du data block/process can send on non-scheduling E-PUCH channel so.Guarantee non-scheduling E-PUCH channel frequency of utilization like this, improved the feedback frequency of information, kept the performance of power control.
When network side is last/descending other dedicated channel that disposed, the control of the power of the dedicated channel of this additional configuration is independently carried out.
In addition, preferably, on non-scheduling E-PUCH channel time slot structure, the TPC sign field appears at the right side of non-scheduling E-PUCH lead code, specifically as shown in Figure 3; And carrying the TPC symbol that is used to adjust non-scheduling E-PUCH reference power and the SS order of synchronization timing at the E-HICH channel, this TPC and SS field appear at the right side of E-HICH lead code, account for 4 bits, specifically as shown in Figure 4.
In this preferred embodiment, can also adjust the sir target value, for example, wrong frame per second sets up standard; UE estimates to obtain wrong frame per second to the data of transmitting in the descending reference channel, and the wrong frame per second that obtains and the wrong frame per second of standard are compared, and when the wrong frame per second of the wrong frame per second overgauge that obtains, then improves described sir target value; When the wrong frame per second that obtains during, then reduce described sir target value less than the wrong frame per second of standard.
For example, because what carry on the non-scheduling E-PUCH channel is the E-DCH data block, this E-DCH data block has been carried out the Cyclic Redundancy Check protection, therefore the base station can be according to the statistics of forward error correction coding (FEC), compare with wrong frame per second (FER) desired value, if the FEC statistical value is greater than the FER desired value, for example 1%, then improve the sir target value; Otherwise, reduce the sir target value.
In method provided by the present invention, can also use the E-HICH channel that responds with all ascending HARQ course ACK/NACK of carrying UE as descending reference channel, the up DPCH channel that distributes for UE is as up reference channel, utilize the technology of closed power control, last/following physical channel is carried out the method for power control.This mode to carry out flow process substantially identical with flow process shown in Figure 2, just utilizing up DPCH channel, the mode of adjusting other channels in the uplink physical channel is different, for example, because the scheduling E-PUCH channel is identical with the reference power of non-scheduling E-PUCH channel, then the adjusted value of scheduling E-PUCH channel and non-scheduling E-PUCH channel is:
P
ULDPCH+Δ
schd-ULDPCH+β
E-TFCI+γ
SF+K
E-PUCH；
Wherein, P
ULDPCHFor up DPCH channel carries out adjusted value after the power control; Δ
Schd-ULDPCHPower excursion for up DPCH channel and non-scheduling E-PUCH interchannel; β
E-TFCIBe to select after the E-PUCH physical resource and modulation type of E-TFCI, distribution, with respect to the gain index of scheduling E-PUCH channel reference power normalization; γ
SFIt is the gain factor of the spreading factor correspondence selected; K
E-PUCHA relevant constant of Qos that flows by high-level signaling configuration, with MAC-d on being mapped to E-DCH.
Value after the E-URCCH channel adjustment is:
P
ULDPCH+Δ
E-RUCCH-ULDPCH；
Wherein, P
ULDPCHAdjust the performance number of the up DPCH channel that obtains for carrying out power control; Δ
E-RUCCH-ULDPCHPower excursion for E-RUCCH channel and up DPCH interchannel.
The E-HICH channel adds the Poewr control method of up DPCH channel, can be applied to not distribute non-scheduling E-PUCH channel for UE at network side.Certainly, when network side be UE for having distributed non-scheduling E-PUCH channel, also can use the E-HICH channel to add the scheme of the power control of up DPCH channel.
Describe up reference channel and descending reference channel in the present embodiment and united the situation of carrying out closed power control, promptly up reference channel and descending reference channel have all been carried out power control.According to the record of present embodiment technical scheme, can also be only to up reference channel or only descending reference channel is carried out power control, and utilize corresponding backward channel to carry the TPC symbol.
The method that present embodiment provides all can be used under two kinds of HSUPA scenes.A kind of HS-DSCH of being channel adds the scene of E-DCH channel, another kind is DCH channel+E-DCH channel, here the HS-DSCH channel is a DSCH Downlink Shared Channel that is used for transmitting the HSDPA data service, the E-DCH channel is the uplink transport channel that is used for transmitting the HSUPA channel data, and DCH is a kind of common dedicated transmission channel.
The class of algorithms under Poewr control method under the DCH+E-DCH scene and the HS-DSCH+E-DCH situation narrated previously seemingly reserving scheduling resource and not reserving under the situation of scheduling resource, is still used identical descending and up reference signal.Only need additionally to define the formula that a power is adjusted for DL DPCH:
P
E-HICH+Δ
EAGCH-EHICH+β
DPCH，TFIC+γ
SF；
Here, P
E-HICHBe the performance number of adjusted E-HICH channel, Δ
EAGCH-EHICHBe the power excursion of E-HICH channel and descending DPCH interchannel, β
DPCH, TFICAnd γ
SFIt is respectively the gain factor of selected transformat of descending DPCH and spreading factor correspondence.
Certainly, can also select some other dedicated channel as reference channel.For example, the descending DPCH channel that is chosen as user's distribution is as descending reference channel, and the method and the said method of specific implementation are similar, are not described in detail in this.
Fig. 5 is the concrete structure figure of a preferred embodiment of the present invention device, comprises UE 50 and base station 51.Wherein, UE 50 comprises: descending reference channel receiving element 501, descending power monitoring unit 502, up reference channel transmitter unit 503, ascending power acquiring unit 504, ascending power adjustment unit 505; Base station 51 comprises: descending reference channel transmitter unit 511, ascending power monitoring unit 512, up reference channel receiving element 513, descending power acquiring unit 514 and descending power adjustment unit 515.
Below, respectively by descending and transmission of uplink data, the structure of this preferred embodiment device is described.
In the power control of down physical channel, descending reference channel transmitter unit 511 is at descending reference channel transmitting data in the base station 51.Descending reference channel receiving element 501 among the UE 50 receives the data that descending reference channel transmitter unit 511 sends in descending reference channel.Descending power monitoring unit 502 obtains descending reference channel receiving element 501 and receives the SIR of described data, and according to the SIR that obtains and the comparison of sir target value, obtains the TPC value, i.e. power control indication.When up reference channel transmitter unit 503 need be launched data on up reference channel, TPC value in the described emission data is set according to the TPC value that obtains.The described data of carrying the TPC value of up reference channel transmitter unit 503 emissions.Up reference channel receiving element 513 receives the data of up reference channel transmitter unit 503 emissions.The TPC value of carrying in the data that descending power acquiring unit 514 receives according to up reference channel receiving element 513 obtains the adjusted value of descending reference channel transmitting power and the transmitting powers of indicating downlink reference channel transmitter unit uses 511 next time.The adjusted value of the descending reference channel transmitting power that descending power adjustment unit 515 obtains according to descending power acquiring unit 514 is adjusted other channels in the down physical channel.
In the power control of uplink physical channel, up reference channel transmitter unit 503 is at up reference channel transmitting data among the UE 50.Up reference channel receiving element 513 in the base station 51 receives the data that up reference channel transmitter unit 503 sends in up reference channel.Ascending power monitoring unit 512 obtains up reference channel receiving element 513 and receives the SIR of described data, and according to the SIR that obtains and the comparison of sir target value, obtains the TPC value, i.e. power control indication.When descending reference channel transmitter unit 511 need be launched data on descending reference channel, TPC value in the described emission data is set according to the TPC value that obtains.The described data of carrying the TPC value of descending reference channel transmitter unit 511 emissions.Descending reference channel receiving element 501 receives the data of descending reference channel transmitter unit 511 emissions.The TPC value of carrying in the data of ascending power acquiring unit 504 according to descending reference channel receiving element 501 receptions obtains the adjusted value of up reference channel transmitting power, and indicates the transmitting powers of up reference channel transmitter unit use 503 next time.The adjusted value of the up reference channel transmitting power that ascending power adjustment unit 505 obtains according to ascending power acquiring unit 504 is adjusted other channels in the uplink physical channel.
Here, descending reference channel transmitter unit and descending reference channel receiving element for up reference channel, can be described as reverse reference channel transmitter unit and reverse reference channel receiving element again; Similarly, up reference channel transmitter unit and up reference channel receiving element for descending reference channel, can be described as reverse reference channel transmitter unit and reverse reference channel receiving element again
By top description, the control of the power of uplink physical channel and down physical channel can be used separately, also can lump together use.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (19)
1. Poewr control method comprises:
A, special-purpose channel is set in the physical channel as reference channel;
B, described reference channel is carried out power control, obtain the performance number after the control of reference channel power;
C, according to the performance number that obtains among the step B, adjust the power of other channels in the physical channel.
2. method according to claim 1 is characterized in that, among the step B, described reference channel is carried out open Loop Power control.
3. method according to claim 1 is characterized in that, among the step B, described reference channel is carried out closed power control.
4. method according to claim 3 is characterized in that, this method further comprises: the sir target value is set;
Wherein, described reference channel is carried out closed power control, the performance number that obtains after the power control comprises:
The signal to noise ratio SIR of the receiving terminal measuring basis channel of reference channel, the sir target value of current SIR that obtains and setting is compared, when the SIR that obtains greater than the sir target value, then the transmitting terminal to reference channel sends the reduction indication, described transmitting terminal is then according to reducing indication, the transmitting power of reference channel is reduced a step-length Step, obtain carrying out the performance number after the power control; When the SIR that obtains less than the sir target value, then send and improve indication to the transmitting terminal of reference channel, described transmitting terminal is then according to improving indication, and the transmitting power of reference channel is improved a step-length Step, obtains carrying out the performance number after the power control.
5. method according to claim 4 is characterized in that this method further comprises the wrong frame per second that sets up standard;
The receiving terminal of reference channel estimates to obtain wrong frame per second to the data of transmitting in the reference channel, and the wrong frame per second that obtains and the wrong frame per second of standard are compared, and when the wrong frame per second of the wrong frame per second overgauge that obtains, then improves described sir target value; When the wrong frame per second that obtains during, then reduce described sir target value less than the wrong frame per second of standard.
6. according to claim 4 or 5 described methods, it is characterized in that, dedicated channel in the physical channel opposite with the reference channel direction is set to reverse reference channel, and the power control command TPC symbol by described reverse reference channel carries described reduction indication or improves indication.
7. method according to claim 1 is characterized in that,
Described reference channel is the enhancing mixed automatic re-transmission indicating channel E-HICH of the automatic request retransmission HARQ process affirmation of all up mixing of carrying UE/non-affirmation ACK/NACK response;
Among the step C, the power of other channels is for adjusting the power of other channels in the down physical channel in the described adjustment physical channel.
8. method according to claim 7 is characterized in that, described down physical channel comprises enhancing absolute grant channel E-AGCH; Among the step C,
The power of described adjustment E-AGCH channel is: the performance number of power control back E-HICH channel is added the power excursion of E-HICH channel and E-AGCH interchannel, obtain the power after the E-AGCH channel adjustment.
9. method according to claim 7 is characterized in that described down physical channel comprises downward special physical channel DPCH; Among the step C, the power of other channels comprises in the described adjustment down physical channel: the power of adjusting descending DPCH channel;
The power of the descending DPCH channel of described adjustment is: the power excursion, the β that the performance number of power control back E-HICH channel are added E-HICH channel and descending DPCH interchannel
DPCH, TFCIAnd γ
SF, obtain the power after the E-HICH channel adjustment;
Wherein, β
DPCH, TFCIFor being the gain factor of the selected transformat correspondence of descending DPCH; γ
SFThe gain factor of spreading factor correspondence.
10. according to claim 1,7,8 or 9 described methods, it is characterized in that described reference channel is non-scheduling E-PUCH channel; Among the step C, the power of other channels is for adjusting the power of other channels in the uplink physical channel in the described adjustment physical channel.
11. method according to claim 10 is characterized in that, described uplink physical channel comprises: the scheduling E-PUCH channel; Among the step C,
The power of described adjustment scheduling E-PUCH channel comprises: the performance number of the non-scheduling E-PUCH channel after the power control is added β
E-TFCI, γ
SFAnd K
E-PUCH, obtain the power after the scheduling E-PUCH channel adjustment;
Wherein, β
E-TFCIBe that selected transformat combination is indicated after the scheduling E-PUCH physical resource and modulation type of E-TFCI, distribution, with respect to the gain index of scheduling E-PUCH channel reference power normalization; γ
SFIt is the gain factor of the spreading factor correspondence selected; K
E-PUCHIt is the scheduling E-PUCH channel constant that the network side configuration is arranged.
12. method according to claim 10 is characterized in that, described uplink physical channel comprises the E-RUCCH channel; Among the step C,
The power of described adjustment E-RUCCH channel is: the performance number of the non-scheduling E-PUCH channel after the power control is added the power excursion of E-RUCCH channel and non-scheduling E-PUCH interchannel, obtain the power after the E-RUCCH channel adjustment.
13. according to claim 1,7,8 or 9 described methods, it is characterized in that described reference channel is: up DPCH channel; Among the step C, the power of other channels is in the described adjustment physical channel: the power of adjusting other channels in the uplink physical channel.
14. method according to claim 13 is characterized in that, described uplink physical channel comprises the scheduling E-PUCH channel; Among the step C,
The power of described adjustment scheduling E-PUCH channel comprises: the power excursion, the β that the performance number of the up DPCH channel after the power control are added up DPCH channel and scheduling E-PUCH interchannel
E-TFCI, γ
SFAnd K
E-PUCH, obtain the power after the scheduling E-PUCH channel adjustment;
Wherein, β
E-TFCIBe to select after the scheduling E-PUCH physical resource and modulation type of E-TFCI, distribution, with respect to the gain index of scheduling E-PUCH channel reference power normalization; γ
SFIt is the gain factor of the spreading factor correspondence selected; K
E-PUCHIt is the scheduling E-PUCH channel constant that the network side configuration is arranged.
15. method according to claim 13 is characterized in that, described uplink physical channel comprises the E-RUCCH channel; Among the step C,
The power of described adjustment E-RUCCH channel is: the performance number of the up DPCH channel after the power control is added the power excursion of E-RUCCH channel and up DPCH interchannel, obtain the power after the E-RUCCH channel adjustment.
16. an output control device is characterized in that, this device comprises:
Power control unit is used for the reference channel of the special-purpose channel conduct of physical channel is carried out power control, obtains the performance number after reference channel is carried out power control;
Power adjustment unit is used for the performance number according to the described reference channel of power control unit acquisition, adjusts the power of other channels in the physical channel.
17. device according to claim 16 is characterized in that, described power control unit comprises:
The power monitoring unit is used for determining whether the power of reference channel needs to adjust, and when needs are adjusted, indicates to power acquiring unit transmission power control;
The power acquiring unit is used for the power control indication according to the power monitoring unit, obtains adjusted power.
18. device according to claim 17 is characterized in that, this device further comprises:
The reference channel transmitter unit is used for sending data on reference channel;
The reference channel receiving element is used for receiving data on reference channel;
Wherein,
The power monitoring unit, the DATA REASONING that receives according to reference channel obtains SIR, and SIR and the sir target value that obtains compared, and sends the power control indication that reduces or improve reference channel to the power acquiring unit;
The power acquiring unit, the power control indication according to the power monitoring unit obtains adjusted power; And according to the transmitting power of described adjusted power control reference channel transmitter unit.
19., it is characterized in that this device further comprises according to claim 17 or 18 described devices:
Oppositely the reference channel transmitter unit is used for when reverse reference channel receiving element sends data, carries the power control indication that the power monitoring unit sends to the power acquiring unit;
Oppositely the reference channel receiving element is used to receive the power control indication of carrying when reverse reference channel transmitter unit sends data, and sends to the power acquiring unit.
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