CN101860949B - Method, system and device for determining transmit power under multi-carrier system - Google Patents
Method, system and device for determining transmit power under multi-carrier system Download PDFInfo
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Abstract
The invention relates to a wireless communication technology, in particular to a method, a system and a device for determining transmit power under a multi-carrier system. The method, the system and the device are used for power control under the situation of multi-carrier to improve power control performance. The method of the embodiment of the invention comprises the following steps that: a network side determines the reference expected receiving power of the available carriers of a terminal; and the network side transmits the reference expected receiving power of the available carriers to the terminal to instruct the terminal to determine the transmit power of each authorized available carrier according to the received reference expected receive power. By adopting the method of the embodiment of the invention, the power control can be conducted under the situation of multi-carrier and thereby the power control performance under the multi-carrier environment is improved.
Description
Technical field
The present invention relates to wireless communication technology, particularly determine the mthods, systems and devices of transmitting power under a kind of multicarrier system.
Background technology
HSUPA (High Speed Uplink Packet Data Access, high speed uplink bag data insert) technology is 3GPP (3rd Generation Partnership Project; 3G (Third Generation) Moblie standardization body) a kind of up enhanced scheme of Release7 proposition.
Wherein, the channel architecture of LCR TDD HSUPA business comprises two up channels and two down channels.Two up channels are E-RUCCH (E-DCH Random access Uplink Control Channel, E-DCH inserts ascending control channel at random) and E-PUCH (E-DCH Physical Uplink Channel, E-DCH physical uplink channel).Two down channels are two down channels of E-AGCH (E-DCH Absolute GrantChannel, E-DCH absolute grant channel), E-HICH (E-DCH HARQ Indicator Channel, E-DCH HARQ just answers indicating channel).
At present, the HSUPA system is divided into scheduled transmission and non-scheduled transmission.The method of the scheduled transmission of HSUPA system comprises:
When a, terminal have uplink strengthening data etc. to be sent, send dispatch request information by E-RUCCH;
B, NodeB (evolution base station) carry out scheduling of resource according to the dispatch request information of receiving, and send resource scheduling information by E-AGCH;
C, terminal are according to the resource scheduling information of receiving, strengthen transformat combination (E-TFC), select suitable TBS (Transport Block Size, transmission block size) and modulation system, encode afterwards, modulate, send uplink strengthening data by E-PUCH;
After d, NodeB received uplink strengthening data, the processing of decoding was determined feeding back ACK or nack message according to CRC (CyclicRedundancy Check, cyclic redundancy check), fed back to this terminal by E-HICH after the coding.
Under the non-scheduled transmission mode, network side is the terminal distribution fixed resource, and terminal can not monitored E-AGCH information, and sends relevant information at fixing physical resource.Network side also can receive user's relevant information in the fixed position, through behind the demodulation coding by E-HICH to terminal feeding back ACK/nack message.
Along with the increase of terminal quantity, in order to improve the termination capacity of system, in the HSUPA system, introduced the multicarrier characteristic in 3GPP Release 7 standards, namely can there be a plurality of carrier waves a residential quarter, and one of them carrier wave is the dominant frequency point, and other carrier waves are auxilliary frequency.
Though introduced the multicarrier characteristic in the HSUPA system, still adopt the mode of single carrier to carry out power control at present, and the control of single carrier power can not be applicable to multicarrier fully.
In sum, at present for the HSUPA system, when carrying out power control, do not consider the situation of multicarrier, thereby reduced the performance of power control.
Summary of the invention
The embodiment of the invention provides the mthods, systems and devices of determining transmitting power under a kind of multicarrier system, in order under the situation of multicarrier, can carry out power control, thereby has improved the performance of power control.
Determine the method for transmitting power under a kind of multicarrier system that the embodiment of the invention provides, this method comprises:
Network side is determined the reference expected received power of terminal available carrier wave;
Described network side is to the reference expected received power of terminal transmission available carrier wave, and indicating terminal is determined the transmitting power of the available carrier wave that each is authorized according to the reference expected received power of receiving.
Determine the system of transmitting power under a kind of multicarrier system that the embodiment of the invention provides, this system comprises:
Radio network controller (RNC) for the reference expected received power of determining the terminal available carrier wave, sends the reference expected received power of available carrier wave to terminal;
Terminal is used for determining the user class closed loop amount of maintenance according to the reference expected received power of receiving, according to the user class closed loop amount of safeguarding, determines the transmitting power of the available carrier wave that each is authorized.
Determine the system of transmitting power under a kind of multicarrier system that the embodiment of the invention provides, comprise the base station, this system also comprises: radio network controller (RNC);
Described RNC, for the reference expected received power of determining the terminal available carrier wave, to the reference expected received power of terminal transmission available carrier wave, indicating terminal is determined the transmitting power of the available carrier wave that each is authorized according to the reference expected received power of receiving.
A kind of terminal that the embodiment of the invention provides, this terminal comprises:
Closed loop amount determination module is used for determining the user class closed loop amount P that safeguards according to the reference expected received power of receiving
E-base
The power determination module is used for determining the transmitting power of the available carrier wave that each is authorized according to the user class closed loop amount of safeguarding.
Embodiment of the invention network side is determined the reference expected received power of terminal available carrier wave; Described network side is to the reference expected received power of terminal transmission available carrier wave, and indicating terminal is determined the transmitting power of the available carrier wave that each is authorized according to the reference expected received power of receiving.Because under the situation of multicarrier, can carry out power control, thereby improve the performance of power control under the multicarrier environment, and can be applicable to the HSUPA system that introduces the multicarrier characteristic and at the follow-up evolution system of HSUPA; Further, can the power of all carrier waves be jointly controlled, thereby improve the frequency of power control, promoted the effect of power control.
Description of drawings
Fig. 1 is the system configuration schematic diagram of determining transmitting power under first kind of multicarrier system of the embodiment of the invention;
Fig. 2 is the system configuration schematic diagram of determining transmitting power under second kind of multicarrier system of the embodiment of the invention;
Fig. 3 is the structural representation of embodiment of the invention terminal;
Fig. 4 is the method flow schematic diagram of determining transmitting power under the embodiment of the invention multicarrier system.
Embodiment
Embodiment of the invention network side is determined the reference expected received power of terminal available carrier wave; Network side is to the reference expected received power of the definite available carrier wave of terminal transmission, and the indication network lateral root is determined the transmitting power of the available carrier wave that each is authorized according to the reference expected received power of receiving.Owing under the situation of multicarrier, can carry out power control, thereby improve the performance of power control under the multicarrier environment.
Need to prove that the embodiment of the invention is applicable to the HSUPA system of multicarrier characteristic, also be applicable to the follow-up evolution system of HSUPA and other multicarrier system.
Below in conjunction with Figure of description the embodiment of the invention is described in further detail.
As shown in Figure 1, the system of definite transmitting power comprises under first kind of multicarrier system of the embodiment of the invention: RNC (Radio Network Controller, radio network controller) 10 and terminal 20.
Terminal 20 is used for determining the user class closed loop amount of maintenance according to the reference expected received power of receiving, according to the user class closed loop amount of safeguarding, determines the transmitting power of the available carrier wave that each is authorized.
As shown in Figure 2, the system of second kind of definite transmitting power of the embodiment of the invention comprises: RNC 30 and base station 40.Wherein, RNC 10 and RNC 30 can be same RNC.
In specific implementation process, RNC 30 sends the reference expected received power of available carrier wave by high-level signaling.
Need to prove that the embodiment of the invention is not limited to send this a kind of mode by high-level signaling, any mode that can send the reference expected received power of definite available carrier wave all is to use the embodiment of the invention.
Wherein, the user class closed loop amount of this terminal is determined for the reference expected received power of the terminal available carrier wave of determining according to RNC30 in base station 40.
The user class closed loop amount of each terminal in self coverage is safeguarded in base station 40.
Wherein, RNC 30 can determine that the reference expected received power of each available carrier wave of terminal (is the PRX of each available carrier wave
Des_base), send the reference expected received power of each available carrier wave of determining to terminal, accordingly, base station 40 is averaged the reference expected received power addition of each available carrier wave that RNC 30 determines, obtains reference expected received power after average as the user class closed loop amount of this terminal;
In specific implementation process, RNC 30 has multiple mode to determine the reference expected received power of terminal available carrier wave, enumerates two kinds below.
The uplink interference of each available carrier wave is measured in mode one, base station 40; RNC 30 determines the reference expected received power of each available carrier wave according to the uplink interference of each available carrier wave of base station 40 measurements.
Specifically can directly or indirectly determine reference expected received power according to uplink interference.
1, determines indirectly.
Such as: the uplink interference value of determining is 82, supposes according to 10 being one grade namely 0～10,10～20.Then 82 should belong to 70～80 uplink interference scope, and then according to the corresponding relation of uplink interference scope and reference expected received power, determine 70～80 uplink interference scope corresponding reference expectation received power, suppose it is 5, determine that namely reference expected received power is 5.
(be 80 such as success rate if the success rate of determining belongs to two uplink interference scopes, it is one grade according to 10, then 80 can belong to 70～80 and 80～90 these two scopes), then can select a uplink interference scope (the uplink interference scope is bigger such as selecting) according to the condition of setting of choosing, perhaps select at random.
In specific implementation process, concrete uplink interference scope and reference expected received power in the corresponding relation of uplink interference scope and reference expected received power, and uplink interference scope corresponding reference expectation received power can change as required.
The adjusted value of supposing current 70～80 correspondences is 5, can increase or reduce adjusted value as required; Can also be according to 15 being one grade, perhaps need not one grade divide, but divide as required, such as: 0～8,8～20,20～50 etc.
2, directly determine.
Mode two, RNC 30 are with the reference expected received power of predefined reference expected received power as each available carrier wave.
In specific implementation process, can preestablish a reference expected received power, then the corresponding same reference expected received power of each available carrier wave (reference expected received power of each available carrier wave is identical); Also can preestablish a plurality of reference expected received powers, then the respectively corresponding predefined reference expected received power of each available carrier wave.
If predefined reference expected received power is bigger in the mode two, can guarantees that initial time user's transmitting power is bigger, thereby promote the accuracy when guaranteeing initial transmission.
In specific implementation process, base station 20 can also produce TPC (Transmission Power Control, the through-put power control) command word of each terminal in the residential quarter, and the terminal in the residential quarter issues the TPC command word.
Such as being example with the multi-carrier HSUPA system, for the terminal that has disposed the scheduled transmission business, send the TPC command word of E-PUCH power control by E-AGCH; For the terminal that has disposed non-scheduled transmission business, after receiving the information that terminal sends by E-PUCH, E-HICH by the E-PUCH correspondence sends feedback information, and wherein feedback information comprises ACK/NACK, TPC and SS (Synchronisation Shift simultaneous bias) information; For the terminal that has disposed scheduling and non-scheduling service simultaneously, a kind of above selecting simultaneously in the dual mode or all send the TPC command word.
Determine after the closed loop amount of this terminal, determine a plurality of TPC command words of this terminal correspondence in the TTI, according to these a plurality of TPC command words, determine a new TPC command word in this TTI, according to new TPC command word the user class closed loop amount of this terminal of self maintained is upgraded.
The base station also is used for when the scheduling interval on the carrier wave during greater than network side configuration or the time interval parameter that sets in advance, the value of the user class closed loop amount safeguarded is adjusted into the value of definite reference expected received power after on average.
As shown in Figure 3, the terminal of the embodiment of the invention comprises: closed loop amount determination module 200 and power determination module 210.
Closed loop amount determination module 200 is used for according to the reference expected received power of receiving, determines that the user class closed loop amount of safeguarding (is P
E-base).
Concrete, closed loop amount determination module 200 is when receiving the reference expected received power of each available carrier wave, the reference expected received power addition of each available carrier wave is averaged, with obtain average after the value of reference expected received power as the value of the user class closed loop amount of safeguarding;
Closed loop amount determination module 200 is when receiving the reference expected received power of new user class, with the value of the reference expected received power of the new user class value as the user class closed loop amount of safeguarding.
Wherein, when power determination module 210 sends information at needs by E-PUCH, determine the transmitting power of the available carrier wave that each is authorized.
Concrete, power determination module 210 is determined the transmitting power of the available carrier wave that each is authorized according to following formula:
P
Tx, i=P
E-base+ β
E, i+ L (formula one)
Wherein: Pt
X, iIt is the transmitting power of i carrier wave;
β
E, iWhen carrying out E-TFC for terminal according to the resource scheduling information of receiving from the base station, the gain factor of i carrier wave correspondence of selection;
P
E-baseBe power adjustment (being the numerical value that the terminal closed loop is safeguarded);
L is that terminal is by measuring the path loss (each available carrier wave is identical) that broadcast channel obtains.
Wherein, the terminal of the embodiment of the invention can further include: receiver module 220 and update module 230.
Such as being example with the multi-carrier HSUPA system, if configuration is the scheduled transmission business, receiver module 220 is monitored the E-AGCH corresponding with available carrier wave, receives the TPC command word of E-PUCH power control by E-AGCH; If configuration is non-scheduled transmission business, terminal sends information according to carrier wave and the physical resource of configuration by E-PUCH, and receiver module 220 solves feedback information at the E-HICH of this E-PUCH correspondence, and extracts the TPC command word from feedback information; If disposed scheduling and non-scheduling service simultaneously, receiver module 220 can be by obtaining the TPC order on a channel among E-AGCH and the E-HICH or two channels.
Accordingly, when power determination module 210 sends information at needs by E-PUCH, according to the user class closed loop amount of safeguarding, determine the transmitting power of the available carrier wave that each is authorized.
If receiver module 220 is received 1 TPC command word, then update module 230 is upgraded the closed loop amount according to following formula:
p
E-base=current p
E-base+ step * TPC
i=current p
E-base+ PTPC
i(formula two)
Wherein, TPC
iBe TPC command word (Up or the Down of i available carrier wave; If Up just increases the P that is just safeguarding
E-baseIncrease step on the basis; If if Down just increases the P that is just safeguarding
E-baseDeduct step on the basis); Step is the step-length of once adjusting; P
TPCiIt is adjustment amount.
If receiver module 220 is received a plurality of TPC command words, then update module 230 has two kinds to upgrade P
E-baseMode.
1, receiver module 220 is selected a TPC command word successively from a plurality of TPC command words, the user class closed loop amount of safeguarding is upgraded, when wherein the TPC command word of current employing was not the TPC command word of selecting for the first time, the closed loop amount was the closed loop amount that adopts after a last TPC command word is upgraded.
Such as 3 TPC command words are arranged; Receiver module 220 is selected 1 TPC command word, and the user class closed loop amount of safeguarding is upgraded; Select 1 TPC command word again, the closed loop amount that 1 TPC command word is upgraded continues to upgrade; Select last TPC command word, the closed loop amount after preceding two TPC command words are upgraded continues to upgrade.
At first kind of mode, receiver module 220 upgrades P according to formula two equally
E-base
2, receiver module 220 is determined a new TPC command word according to each TPC command word, according to new TPC command word the user class closed loop amount of safeguarding is upgraded.
Wherein, the TPC command word is Up or Down, when determining total TPC command word, checks the ratio that Up and Down are shared, with ratio big as new TPC command word.Such as 10 TPC command words, wherein there are 6 to be Up, 4 is Down, then new TPC command word is exactly Up; If run into the Up ratio identical situation shared with Down, then can select one or according to preestablishing selection when identical such as the ratio that is set in advance in (, select Up) or thinking that adjustment amount is 0 at random.
At the second way, receiver module 220 upgrades P according to following formula
E-base:
p
E-base=current p
E-base+ step * Z (TPC
iThe p of)=current
E-base+ P
TPC(formula three)
Wherein, Z (TPC
i) be the new TPC command word that produces; P
TPCiIt is new adjustment amount; Other alphabetical implications are identical with formula two, repeat no more.
Need to prove that the embodiment of the invention is not limited to above-mentioned dual mode, other modes that can upgrade the user class closed loop amount of safeguarding according to the TPC command word all are to use the embodiment of the invention.
Because base station and terminal need be safeguarded P jointly
E-baseSo the base station also needs according to the TPC command word closed loop amount to be upgraded.Need to prove that base station and terminal need be safeguarded P jointly
E-baseSo the mode of base station and terminal renewal should be identical, specifically can arrange in advance or set by agreement.
In specific implementation process, if terminal need need transmit at a plurality of carrier waves at synchronization, then the transmitting power sum of each available carrier wave of determining of power determination module 210 is not more than the maximum transmission power of self and the smaller value of the up maximum transmission power that allows of network side; Perhaps the transmitting power of each available carrier wave of determining of power determination module 210 is not more than the smaller value of the single carrier maximum transmission power of self maximum transmission power and network side broadcasting, and the transmitting power sum of each available carrier wave of determining of power determination module 210 is not more than the maximum transmission power of self.
Concrete, power determination module 210 is according to the β e in the formula one, and i adjusts the transmitting power of each carrier wave.Be Px such as the maximum available launch power of terminal, then terminal is P1 for first allocation of carriers power, and should guarantee P1≤Px, and it (is that power determination module 210 needs to adjust β e that second carrier wave just can not surpass Px-P1 at the power of doing the E-TFC selection, i), the rest may be inferred.
Select β e, i according to the PRRI in the authorization message (Power Resource Related Information power resource relevant information) and CRRI (Code Resource Related Information code channel resource relevant information):
β
e，i＝β
0，e，i+α
e，i+Δ
harq。
Wherein, PRRI determines β
0, e, iCRRI determines α
E, iβ
0, e, iShould satisfy β
0, e, i+ Δ
Harq＜PRRI; P
E-base+ β
E, i+ L＜residue maximum transmission power.
Wherein, the terminal of the embodiment of the invention can further include: initialization module 240.
As shown in Figure 4, the method for definite transmitting power comprises the following steps: under the embodiment of the invention multicarrier system
Step 401, network side are determined the reference expected received power of terminal available carrier wave.
Wherein, network side is the terminal distribution available carrier wave earlier, determines the reference expected received power of available carrier wave then.
Step 402, network side send the reference expected received power of available carrier wave to terminal, and indicating terminal is determined the transmitting power of the available carrier wave that each is authorized according to the reference expected received power of receiving.
Step 403, terminal determine that according to the reference expected received power of receiving the user class closed loop amount of safeguarding (is P
E-base).
Step 404, terminal are determined the transmitting power of the available carrier wave that each is authorized according to the user class closed loop amount of safeguarding.
In specific implementation process, network side sends the reference expected received power of available carrier wave in the step 402 by high-level signaling.
Need to prove that the embodiment of the invention is not limited to send this a kind of mode by high-level signaling, any mode that can send the reference expected received power of definite available carrier wave all is to use the embodiment of the invention.
Wherein, can further include after the step 401:
Step a401, network side determine the user class closed loop amount of this terminal according to the reference expected received power of the terminal available carrier wave of determining.
In specific implementation process, terminal is safeguarded the user class closed loop amount of self, and network side is safeguarded the user class closed loop amount of each terminal.
Wherein, network side can determine that the reference expected received power of each available carrier wave of terminal (is the PRX of each available carrier wave in the step 401
Des_base), the reference expected received power that network side sends out each available carrier wave definite to terminal in the step 402, terminal is when receiving the reference expected received power of each available carrier wave in the step 403, the reference expected received power addition of each available carrier wave is averaged, with obtain average after the value of reference expected received power as the value of the user class closed loop amount of safeguarding, the reference expected received power addition of each available carrier wave that network side will be determined among the step a401 is averaged, and obtains reference expected received power after average as the user class closed loop amount of this terminal;
Network side can also be determined the reference expected received power of each available carrier wave of terminal in the step 401, and the reference expected received power addition of each available carrier wave is averaged, reference expected received power after obtaining on average is as the reference expected received power of new user class, network side sends the reference expected received power of new user class in the step 402 to terminal, terminal is when receiving the reference expected received power of new user class in the step 403, with the value of the reference expected received power of the new user class value as the user class closed loop amount of safeguarding, the reference expected received power of the new user class that network side will be determined among the step a401 is as the user class closed loop amount of this terminal.
In specific implementation process, network side has multiple mode to determine the reference expected received power of terminal available carrier wave, enumerates two kinds below.
Mode one, network side are measured the uplink interference of each available carrier wave, and determine the reference expected received power of each available carrier wave according to measurement result.
Specifically can directly or indirectly determine reference expected received power according to uplink interference.
1, determines indirectly.
Network side is measured the uplink interference of each available carrier wave, and carry out the uplink interference value that smoothing processing obtains each carrier wave, according to the corresponding relation of predefined uplink interference scope and reference expected received power, determine the affiliated uplink interference scope corresponding reference expectation received power of uplink interference value of each available carrier wave;
Such as: the uplink interference value of determining is 82, supposes according to 10 being one grade namely 0～10,10～20.Then 82 should belong to 70～80 uplink interference scope, and then according to the corresponding relation of uplink interference scope and reference expected received power, determine 70～80 uplink interference scope corresponding reference expectation received power, suppose it is 5, determine that namely reference expected received power is 5.
(be 80 such as success rate if the success rate of determining belongs to two uplink interference scopes, it is one grade according to 10, then 80 can belong to 70～80 and 80～90 these two scopes), then can select a uplink interference scope (the uplink interference scope is bigger such as selecting) according to the condition of setting of choosing, perhaps select at random.
In specific implementation process, concrete uplink interference scope and reference expected received power in the corresponding relation of uplink interference scope and reference expected received power, and uplink interference scope corresponding reference expectation received power can change as required.
The adjusted value of supposing current 70～80 correspondences is 5, can increase or reduce adjusted value as required; Can also be according to 15 being one grade, perhaps need not one grade divide, but divide as required, such as: 0～8,8～20,20～50 etc.
2, directly determine.
Network side is measured the uplink interference of each available carrier wave, and carries out smoothing processing, and smoothing processing is obtained the uplink interference value of each available carrier wave correspondence as the reference expected received power of this carrier wave.
Mode two, network side are with the reference expected received power of predefined reference expected received power as each available carrier wave.
In specific implementation process, can preestablish a reference expected received power, then the corresponding same reference expected received power of each available carrier wave (reference expected received power of each available carrier wave is identical); Also can preestablish a plurality of reference expected received powers, then the respectively corresponding predefined reference expected received power of each available carrier wave.
If predefined reference expected received power is bigger in the mode two, can guarantees that initial time user's transmitting power is bigger, thereby promote the accuracy when guaranteeing initial transmission.
In the step 404, when terminal sends information at needs by E-PUCH, determine the transmitting power of the available carrier wave that each is authorized.
Concrete, network side is adjusted according to a pair of transmitting power of formula.
In specific implementation process, in the step 402, network side can also produce the TPC command word of each terminal in the residential quarter, and the terminal in the residential quarter issues the TPC command word.
Such as being example with the multi-carrier HSUPA system, for the terminal that has disposed the scheduled transmission business, send the TPC command word of E-PUCH power control by E-AGCH; For the terminal that has disposed non-scheduled transmission business, after receiving the information that terminal sends by E-PUCH, by the E-HICH transmission feedback information of E-PUCH correspondence, wherein feedback information comprises ACK/NACK, TPC and SS information; For the terminal that has disposed scheduling and non-scheduling service simultaneously, a kind of above selecting simultaneously in the dual mode or all send the TPC command word.
Can further include after the step a401:
Network side determines after the closed loop amount of this terminal, determines a plurality of TPC command words of this terminal correspondence in the TTI, selects a TPC command word from a plurality of TPC command words successively, and the user class closed loop amount of this terminal of self maintained is upgraded; Or determine after the closed loop amount of this terminal, determine a plurality of TPC command words of this terminal correspondence in the TTI, according to these a plurality of TPC command words, determine a new TPC command word in this TTI, according to new TPC command word the user class closed loop amount of this terminal of self maintained is upgraded.
The scheduling interval of network side on carrier wave be during greater than network side configuration or the time interval parameter that sets in advance, the value of the user class closed loop amount safeguarded is adjusted into the value of definite reference expected received power after average.
Wherein, can further include between step 403 and the step 404:
Step a404, terminal receive the TPC command word in a plurality of available carrier wave in arbitrary TTI.
Such as being example with the multi-carrier HSUPA system, if configuration is the scheduled transmission business, the E-AGCH that terminal monitoring is corresponding with available carrier wave receives the TPC command word that E-PUCH power is controlled by E-AGCH; If configuration is non-scheduled transmission business, terminal sends information according to carrier wave and the physical resource of configuration by E-PUCH, and terminal solves feedback information at the E-HICH of this E-PUCH correspondence, and extracts the TPC command word from feedback information; If disposed scheduling and non-scheduling service simultaneously, terminal can be by obtaining the TPC order on a channel among E-AGCH and the E-HICH or two channels.
The TPC command word that step b405, basis are received is upgraded the user class closed loop amount of safeguarding.
Accordingly, when terminal sends information at needs by E-PUCH, according to the user class closed loop amount of safeguarding, determine the transmitting power of the available carrier wave that each is authorized
If terminal is received 1 TPC command word among the step a405, then among the step b405 terminal according to formula two.
If terminal is received a plurality of TPC command words among the step a405, then terminal has two kinds to upgrade P among the step b405
E-baseMode.
1, terminal is selected a TPC command word successively from a plurality of TPC command words, the user class closed loop amount of safeguarding is upgraded, when wherein the TPC command word of current employing was not the TPC command word of selecting for the first time, the closed loop amount was the closed loop amount that adopts after a last TPC command word is upgraded.
Such as 3 TPC command words are arranged; Terminal is selected 1 TPC command word, and the user class closed loop amount of safeguarding is upgraded; Select 1 TPC command word again, the closed loop amount that 1 TPC command word is upgraded continues to upgrade; Select last TPC command word, the closed loop amount after preceding two TPC command words are upgraded continues to upgrade.
At first kind of mode, terminal is upgraded P according to formula two equally
E-base
2, terminal is determined total TPC command word according to each TPC command word, according to total TPC command word the user class closed loop amount of safeguarding is upgraded.
Wherein, the TPC command word is Up or Down, when determining total TPC command word, checks the ratio that Up and Down are shared, with ratio big as new TPC command word.Such as 10 TPC command words, wherein there are 6 to be Up, 4 is Down, then new TPC command word is exactly Up; If run into the Up ratio identical situation shared with Down, then can select one or according to preestablishing selection when identical such as the ratio that is set in advance in (, select Up) or thinking that adjustment amount is 0 at random.
At the second way, terminal is upgraded P according to following formula three
E-base
Need to prove that the embodiment of the invention is not limited to above-mentioned dual mode, other modes that can upgrade the user class closed loop amount of safeguarding according to the TPC command word all are to use the embodiment of the invention.
Because network side and terminal need be safeguarded P jointly
E-baseSo network side also needs according to the TPC command word closed loop amount to be upgraded.Wherein, the mode that the mode that network side upgrades and terminal are upgraded is similar, repeats no more.Need to prove that network side and terminal need be safeguarded P jointly
E-baseSo the mode of network side and terminal renewal should be identical, specifically can arrange in advance or set by agreement.
In specific implementation process, if terminal need need transmit at a plurality of carrier waves at synchronization, the transmitting power sum of each available carrier wave that terminal is determined is not more than the maximum transmission power of self and the smaller value of the up maximum transmission power that allows of network side; Perhaps the transmitting power of each available carrier wave of Que Dinging is not more than the smaller value of the single carrier maximum transmission power of self maximum transmission power and network side broadcasting, and the transmitting power sum of each available carrier wave of determining is not more than the maximum transmission power of self.。
Concrete, terminal is according to the β e in the formula one, and i adjusts the transmitting power of each carrier wave.Be Px such as the maximum available launch power of terminal, then terminal is P1 for first allocation of carriers power, and should guarantee P1≤Px, and second carrier wave just can not surpass Px-P1 (be that terminal need be adjusted β e, i), the rest may be inferred doing power that E-TFC selects.
Select β e, i according to the PRRI in the authorization message and CRRI:
β
e，i＝β
0，e，i+α
e，i+Δ
harq。
Wherein, PRRI determines β
0, e, iCRRI determines α
E, iβ
0, e, iShould satisfy β
0, e, i+ Δ
Harq＜PRRI; P
E-base+ β
E, i+ L＜residue maximum transmission power.
Wherein, can further include after the step 403:
When the scheduling interval on the carrier wave during greater than network side configuration or the time interval parameter that sets in advance, terminal is adjusted into the value of the user class closed loop amount safeguarded the value of the reference expected received power of the value of the reference expected received power after average or new user class.
From above-described embodiment as can be seen: embodiment of the invention network side is determined the reference expected received power of terminal available carrier wave; Described network side is to the reference expected received power of terminal transmission available carrier wave, and indicating terminal is determined the transmitting power of the available carrier wave that each is authorized according to the reference expected received power of receiving.Because under the situation of multicarrier, can carry out power control, thereby improve the performance of power control under the multicarrier environment, and can be applicable to the HSUPA system that introduces the multicarrier characteristic and at the follow-up evolution system of HSUPA; Further, can the power of all carrier waves be jointly controlled, thereby improve the frequency of power control, promoted the effect of power control.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (33)
1. determine the method for transmitting power under the multicarrier system, it is characterized in that this method comprises:
Network side is determined the reference expected received power of terminal available carrier wave;
Described network side is to the reference expected received power of terminal transmission available carrier wave, and indicating terminal is determined the user class closed loop amount P of maintenance according to the reference expected received power of receiving
E-base, and determine the transmitting power of the available carrier wave that each is authorized according to the user class closed loop amount of safeguarding;
Described terminal receives the transmission power control command word TPC that belongs to this terminal by down channel, and after determining the user class closed loop amount of safeguarding, determine before the transmitting power of the available carrier wave that each is authorized, according to the described TPC command word of receiving, the user class closed loop amount of safeguarding is upgraded.
2. the method for claim 1 is characterized in that, this method also comprises:
Terminal is determined the user class closed loop amount P that safeguards according to the reference expected received power of receiving
E-base
Described terminal is determined the transmitting power of the available carrier wave that each is authorized according to the user class closed loop amount of safeguarding.
3. method as claimed in claim 2 is characterized in that, network side determines that the reference expected received power of terminal available carrier wave also comprises afterwards:
Described network side is determined the user class closed loop amount of this terminal according to the reference expected received power of the terminal available carrier wave of determining.
4. method as claimed in claim 3 is characterized in that, wherein, terminal is safeguarded the user class closed loop amount of self, and network side is safeguarded the user class closed loop amount of each terminal.
5. method as claimed in claim 2 is characterized in that, described network side determines that the reference expected received power of terminal available carrier wave comprises:
Described network side is determined the reference expected received power of each available carrier wave of terminal;
Described network side comprises to the reference expected received power that terminal sends available carrier wave:
Described network side sends the reference expected received power of each available carrier wave to terminal;
Described terminal determines that the closed loop amount comprises:
Described terminal is averaged the reference expected received power addition of each available carrier wave, with obtain average after the value of reference expected received power as the value of the user class closed loop amount of safeguarding.
6. method as claimed in claim 2 is characterized in that, described network side determines that the reference expected received power of terminal available carrier wave comprises:
Described network side is determined the reference expected received power of each available carrier wave of terminal, and the reference expected received power addition of each available carrier wave is averaged, with the reference expected received power of the reference expected received power after average as new user class;
Described network side comprises to the reference expected received power that terminal sends available carrier wave:
Described network side sends the reference expected received power of new user class to terminal;
Described terminal determines that the user class closed loop amount of safeguarding comprises:
Described terminal is with the value of the reference expected received power of the described new user class value as the user class closed loop amount of safeguarding.
7. as the described method of the arbitrary claim of claim 1～6, it is characterized in that described network side sends the reference expected received power of available carrier wave by high-level signaling.
8. as claim 5 or 6 described methods, it is characterized in that described network side determines that the reference expected received power of each available carrier wave comprises:
Described network side is measured the uplink interference of each available carrier wave, and determines the reference expected received power of each available carrier wave according to measurement result.
9. method as claimed in claim 8 is characterized in that, described network side determines that according to measurement result the reference expected received power of each available carrier wave comprises:
Described network side is measured the uplink interference of each available carrier wave, and carries out the uplink interference value that smoothing processing obtains each carrier wave;
Described network side is determined the affiliated uplink interference scope corresponding reference expectation received power of uplink interference value of each available carrier wave according to the corresponding relation of predefined uplink interference scope and reference expected received power.
10. as claim 5 or 6 described methods, it is characterized in that described network side determines that the reference expected received power of each available carrier wave comprises:
Described network side is measured the uplink interference of each available carrier wave, and carries out smoothing processing;
Described network side obtains the uplink interference value of each available carrier wave correspondence as the reference expected received power of this carrier wave with described smoothing processing.
11., it is characterized in that described network side determines that the reference expected received power of each available carrier wave comprises as the described method of the arbitrary claim of claim 1～6:
Described network side is with the reference expected received power of predefined reference expected received power as each available carrier wave.
12. the method for claim 1 is characterized in that, described terminal is upgraded the user class closed loop amount of safeguarding and is comprised:
Described terminal if receive a plurality of TPC command words in a plurality of available carrier wave, is selected a TPC command word successively from a plurality of TPC command words in arbitrary Transmission Time Interval TTI, the user class closed loop amount of self maintained is upgraded; Or
Described terminal is in arbitrary TTI, if receive a plurality of TPC command words at a plurality of carrier waves, according to these a plurality of TPC command words, determine a new TPC command word in this TTI, according to described new TPC command word the user class closed loop amount of self maintained is upgraded.
13. method as claimed in claim 3 is characterized in that, described network side determines that the closed loop amount of this terminal also comprises afterwards:
Described network side is determined a plurality of TPC command words of this terminal correspondence in the TTI, selects a TPC command word from a plurality of TPC command words successively, and the user class closed loop amount of this terminal of self maintained is upgraded; Or
Described network side is determined a plurality of TPC command words of this terminal correspondence in the TTI, according to these a plurality of TPC command words, determines a new TPC command word in this TTI, according to described new TPC command word the user class closed loop amount of this terminal of self maintained is upgraded.
14. as claim 1,2,3,4,5,6,9,12 or 13 described methods, it is characterized in that, described terminal need be when a plurality of carrier waves transmit at synchronization, and the transmitting power sum of each available carrier wave that described terminal is determined is not more than the maximum transmission power of described terminal and the smaller value of the up maximum transmission power that network side is broadcasted; Or
Described terminal need be when a plurality of carrier waves transmit at synchronization, the transmitting power of each available carrier wave that described terminal is determined is not more than the smaller value of the single carrier maximum transmission power of terminal maximum transmission power and network side broadcasting, and terminal is not more than the maximum transmission power of described terminal in the transmitting power sum of described a plurality of carrier waves.
15. as claim 5,6 or 9 described methods, it is characterized in that this method further comprises:
When the scheduling interval on the carrier wave during greater than network side configuration or the time interval parameter that sets in advance, network side and terminal are adjusted into the value of the user class closed loop amount safeguarded the value of described reference expected received power after average.
16. determine the system of transmitting power under the multicarrier system, it is characterized in that this system comprises: radio network controller (RNC), base station and terminal;
Described radio network controller, for the reference expected received power of determining the terminal available carrier wave, to the reference expected received power of terminal transmission available carrier wave, indicating terminal is determined the user class closed loop amount P of maintenance according to the reference expected received power of receiving
E-base, and determine the transmitting power of the available carrier wave that each is authorized according to the user class closed loop amount of safeguarding;
Described base station is used for sending transmission power control command word TPC to terminal;
Described terminal, be used for receiving the transmission power control command word that belongs to this terminal by down channel, and after determining the user class closed loop amount of safeguarding, determine before the transmitting power of the available carrier wave that each is authorized, according to the described TPC command word of receiving, the user class closed loop amount of safeguarding is upgraded.
17. system as claimed in claim 16 is characterized in that, described base station is used for:
According to the reference expected received power of the definite terminal available carrier wave of described radio network controller, determine the user class closed loop amount of this terminal.
18. system as claimed in claim 17 is characterized in that, wherein, and the user class closed loop amount of each terminal in described base station maintenance self coverage.
19. system as claimed in claim 17 is characterized in that, described radio network controller is used for:
Determine the reference expected received power of each available carrier wave of terminal, send the reference expected received power of each available carrier wave of determining to terminal.
20. system as claimed in claim 19 is characterized in that, described base station is used for:
The reference expected received power addition of each available carrier wave that described radio network controller is determined is averaged, and obtains reference expected received power after average as the user class closed loop amount of this terminal.
21. system as claimed in claim 17 is characterized in that, described radio network controller is used for:
Determine the reference expected received power of each available carrier wave of terminal, and the reference expected received power addition of each available carrier wave is averaged, reference expected received power after obtaining on average sends the reference expected received power of new user class as the reference expected received power of new user class to terminal.
22. system as claimed in claim 21 is characterized in that, described base station is used for:
The reference expected received power of the new user class that described radio network controller is definite is as the user class closed loop amount of this terminal.
23., it is characterized in that described radio network controller sends the reference expected received power of available carrier wave by high-level signaling as the described system of the arbitrary claim of claim 16～22.
24. as claim 19 or 21 described systems, it is characterized in that described base station also is used for:
Measure the uplink interference of each available carrier wave;
Described radio network controller is used for:
According to the uplink interference of described each available carrier wave, determine the reference expected received power of each available carrier wave.
25. system as claimed in claim 24 is characterized in that, described radio network controller is used for:
The uplink interference of described each available carrier wave is carried out the uplink interference value that smoothing processing obtains each carrier wave, according to the corresponding relation of predefined uplink interference scope and reference expected received power, determine the affiliated uplink interference scope corresponding reference expectation received power of uplink interference value of each available carrier wave.
26. system as claimed in claim 24 is characterized in that, described radio network controller is used for:
Uplink interference to described each available carrier wave is carried out smoothing processing, and described smoothing processing is obtained the uplink interference value of each available carrier wave correspondence as the reference expected received power of this carrier wave.
27. as claim 19 or 21 described systems, it is characterized in that described RNC also is used for:
With the reference expected received power of predefined reference expected received power as each available carrier wave.
28. system as claimed in claim 17 is characterized in that, described base station also is used for:
Determine after the closed loop amount of this terminal, determine a plurality of transmission power control command word TPC command words of this terminal correspondence in the Transmission Time Interval TTI, from a plurality of TPC command words, select a TPC command word successively, the user class closed loop amount of this terminal of self maintained is upgraded; Or
Determine after the closed loop amount of this terminal, determine a plurality of TPC command words of this terminal correspondence in the TTI, according to these a plurality of TPC command words, determine a new TPC command word in this TTI, according to described new TPC command word the user class closed loop amount of this terminal of self maintained is upgraded.
29. as claim 21 or 22 described systems, it is characterized in that described base station also is used for:
When the scheduling interval on the carrier wave during greater than network side configuration or the time interval parameter that sets in advance, the value of the user class closed loop amount safeguarded is adjusted into the value of described reference expected received power after average.
30. a terminal is characterized in that, this terminal comprises:
Closed loop amount determination module is used for determining the user class closed loop amount P that safeguards according to the reference expected received power of receiving
E-base
The power determination module is used for determining the transmitting power of the available carrier wave that each is authorized according to the user class closed loop amount of safeguarding;
Receiver module is used for receiving the TPC command word in a plurality of available carrier wave in arbitrary Transmission Time Interval TTI;
Update module, be used for when receiving a plurality of TPC command word, from a plurality of TPC command words, select a TPC command word successively, user class closed loop amount to self maintained is upgraded, or according to these a plurality of TPC command words, determine a new TPC command word in this TTI, according to described new TPC command word the user class closed loop amount of self maintained is upgraded.
31. terminal as claimed in claim 30 is characterized in that, described closed loop amount determination module is used for:
When receiving the reference expected received power of each available carrier wave, the reference expected received power addition of each available carrier wave is averaged, with obtain average after the value of reference expected received power as the value of the user class closed loop amount of safeguarding;
When receiving the reference expected received power of new user class, with the value of the reference expected received power of the described new user class value as the user class closed loop amount of safeguarding.
32. as claim 30 or 31 described terminals, it is characterized in that, need be when a plurality of carrier waves transmit at synchronization, the transmitting power sum of each available carrier wave that described power determination module is determined is not more than the maximum transmission power of self and the smaller value of the up maximum transmission power that allows of network side; Perhaps
Need be when a plurality of carrier waves transmit at synchronization, the transmitting power of each available carrier wave that described power determination module is determined is not more than the smaller value of the single carrier maximum transmission power of self maximum transmission power and network side broadcasting, and the transmitting power sum of each available carrier wave of determining of described power determination module is not more than the maximum transmission power of self.
33. terminal as claimed in claim 31 is characterized in that, described terminal also comprises:
Initialization module, be used for when the scheduling interval on the carrier wave during greater than network side configuration or the time interval parameter that sets in advance, the value of the user class closed loop amount safeguarded be adjusted into the value of the reference expected received power of the value of described reference expected received power after on average or described new user class.
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| CN101023597A (en) * | 2004-07-20 | 2007-08-22 | 高通股份有限公司 | Reverse link power control in an orthogonal system |
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