CN101860950B - Power control method and system of multicarrier user terminal - Google Patents
Power control method and system of multicarrier user terminal Download PDFInfo
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Abstract
The invention discloses a power control method of a multicarrier user terminal, which comprises the following steps: allocating carriers for a user terminal, and configuring PRXdes_base; respectively allocating a corresponding Pe-base initial value for each allocated carrier by a network side and the user terminal according to the configured PRXdes_base; obtaining a TPC command word corresponding to each carrier, and updating the Pe-base value corresponding to each carrier according to the TPC command word to obtain the current Pe-base corresponding to each carrier; and computing the transmitting power of the authorized carrier by the user terminal on the authorized carrier according to the current Pe-base, and sending uplink enhanced data through an E-DCH physical uplink channel. The invention also discloses a power control system of the multicarrier user terminal. In the power control method and the power control system of the multicarrier user terminal provided by the invention, independent power control can be respectively realized for each carrier by allocating at least one carrier and the power control parameter corresponding to each carrier for the user terminal, thereby the power control of the user terminal in a multicarrier working mode in a multicarrier system is realized.
Description
Technical field
The present invention relates to mobile communication technology, be specifically related to a kind of Poewr control method and system of multicarrier user terminal.
Background technology
(High-Speed Uplink Packet Access, HSUPA) technology is a kind of up enhanced scheme that 3GPP Release7 proposes in the high speed uplink packet access.The professional channel architecture of HSUPA comprises: E-DCH (enhancing transmission channel) inserts ascending control channel (E-DCH Random accessUplink Control Channel at random; E-RUCCH) and E-DCH physical uplink channel (E-DCH PhysicalUplink Channel; E-PUCH) two up channels; E-DCH absolute grant channel (E-DCHAbsolute Grant Channel; E-AGCH) and E-DCH HARQ answering indication signal channel (E-DCHHARQ Indicator Channel, E-HICH) two down channels.In present standard; Adopting time division duplex (TDD) system of HSUPA technology is single-carrier system---promptly; UE in the system carries out the uplink strengthening data transmission through single carrier frequency, and sends when comprising the E-PUCH of uplink strengthening data, must carry out the transmitting power control of E-PUCH.Because in the single-carrier system; UE carries out transfer of data through single carrier frequency; Therefore, be controlled at identical in essence to the control of the power of said carrier frequency with power this moment to said UE---promptly, be exactly that the power of transmission E-PUCH on said carrier frequency is controlled to the power control of sending E-PUCH.
In addition; Multicarrier system has also further been proposed in the current standard; The characteristics of said multicarrier system are that a sub-district in this system has a plurality of carrier frequency; And the UE in the sub-district can be operated under the multi-carrier mode---promptly, the working frequency points of UE no longer is limited to some carrier frequency, but can comprise a plurality of carrier frequency of sub-district simultaneously.
Although current standard has proposed the notion of multicarrier system, the clear and definite as yet ins and outs relevant---the concrete grammar of the power control when for example being in the UE transmission E-PUCH under the multicarrier mode of operation with multicarrier.Because the method for UE being carried out power control in the current standard all is based on the Poewr control method of single-carrier system, only corresponding carrier wave during UE work, thus the method for existing power control all is least unit with UE.And in multicarrier system, UE may be simultaneously operated on a plurality of carrier frequency, that is, same UE is corresponding to a plurality of carrier waves, and therefore the control of the power of this moment just need be controlled respectively the power of a plurality of work carrier waves of UE.Obviously, existing Poewr control method can't be applicable to multicarrier system.
Summary of the invention
The present invention provides a kind of Poewr control method and system of multicarrier user terminal, can in multicarrier system, realize the power control to UE under the multicarrier mode of operation.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of Poewr control method of multicarrier user terminal, this method comprises:
Be the user terminal distributing carrier wave, and configuring E-DCH physical uplink channel reference expectation received power PRX
Des_base
Network side and user terminal are according to the PRX of configuration
Des_baseFor each carrier wave that distributes disposes corresponding closed power P respectively
E-baseInitial value;
Obtain the corresponding emissive power control command word of each carrier wave, and upgrade the corresponding P of each carrier wave according to said emissive power control command word
E-baseValue obtains the corresponding current P of each carrier wave
E-base
On the carrier wave that obtains authorizing, user terminal is according to current P
E-baseCalculate the transmitting power of the said carrier wave that obtains authorizing, send uplink strengthening data through E-DCH physical uplink channel.
A kind of power control system of multicarrier user terminal comprises:
Network side is used to the user terminal distributing carrier wave, and configuration PRX
Des_base, with the carrier wave of said distribution, the PRX of configuration
Des_baseThe emissive power control command word corresponding with each carrier wave issues user terminal, according to the PRX of said configuration
Des_baseFor each carrier wave disposes corresponding P respectively
E-baseInitial value also is used for selecting partly or entirely to authorize and informing user terminal from the carrier wave of said distribution;
User terminal is used to receive the carrier wave of distribution and the PRX of configuration
Des_base, according to the PRX of said configuration
Des_baseFor each carrier wave that distributes disposes corresponding P respectively
E-baseInitial value; Upgrade the corresponding P of each carrier wave according to the corresponding emissive power control command word of each carrier wave that obtains
E-baseValue obtains the corresponding current P of each carrier wave
E-baseOn the carrier wave that obtains authorizing, according to current P
E-baseCalculate the transmitting power of the said carrier wave that obtains authorizing, send uplink strengthening data through E-DCH physical uplink channel.
Visible by above-mentioned technical scheme; The Poewr control method of multicarrier UE provided by the invention and system; Through distribute the power control parameters of the correspondence of at least one carrier wave and each carrier wave for UE; Can realize independently power control respectively to each carrier wave, thereby realize the power control of the UE under the multicarrier mode of operation in the multicarrier system.
Description of drawings
Fig. 1 is the schematic flow sheet of the Poewr control method of multicarrier UE in the embodiment of the invention.
Fig. 2 is the composition structural representation of the power control system of multicarrier UE in the embodiment of the invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, to further explain of the present invention.
At first it should be explicitly made clear at this point; In the prior art; Because the UE in the single-carrier system is operated on the single carrier wave, it is carried out power control promptly is that unit carries out with UE, and therefore the power control parameters of this moment is the parameter of user class---be system carries out power control respectively to each UE.And in multicarrier system; UE can be operated under the multi-carrier mode; Therefore it being carried out power control correspondingly just need be specific to the power control of each carrier wave, and obviously the power control parameters of this moment should be the parameter of carrier wave level---and to be system carry out power respectively to each carrier wave of UE controls.
On the basis of above-mentioned explanation, the embodiment of the invention provides the Poewr control method of a kind of multicarrier UE, and its flow process is as shown in Figure 1, comprising:
Step 101: network side is the UE allocation carriers, and configuration E-PUCH reference expected received power (Reference Desired E-PUCH RX Power, PRX
Des_base);
Step 102: network side and UE are according to the PRX of configuration
Des_base, for each carrier wave of configuration disposes corresponding closed power (P respectively
E-base) initial value;
Step 103:UE obtains the corresponding transmitting power control of each carrier wave (Transmit Power Control, TPC) command word, and upgrade the corresponding P of each carrier wave according to said TPC command word
E-base, obtain the corresponding current P of each carrier wave
E-base
Step 104: on the carrier wave that obtains authorizing, UE is according to current P
E-baseCalculate the transmitting power of the said carrier wave that obtains authorizing, send uplink strengthening data through E-PUCH.
Wherein, in the step 101, the said UE of being disposes PRX
Des_baseMethod comprise:
The uplink interference situation of each carrier wave that the network side statistics is distributed is also calculated the corresponding PRX of each carrier wave
Des_base, or the uplink interference situation of each carrier wave of distributing of network side statistics and average after, be the shared PRX of each carrier wave all carrier wave of configuration
Des_base, said PRX
Des_baseBe used to calculate the P of each carrier wave
E-baseInitial value.
In the step 102, according to the PRX of configuration
Des_base, for each carrier wave disposes corresponding P respectively
E-baseThe method of initial value then specifically comprises:
To be the PRX of each carrier wave configuration
Des_baseAs the corresponding P of this carrier wave
E-baseInitial value, wherein, as the corresponding respectively PRX separately of each carrier wave
Des_baseThe time, with the corresponding PRX of each carrier wave
Des_baseAs the corresponding P of this carrier wave
E-baseInitial value; PRX when all carrier wave share common
Des_baseThe time, with said shared PRX
Des_baseAs the corresponding P of each carrier wave
E-baseInitial value.
In step 103, the method that said UE obtains the corresponding TPC command word of each carrier wave specifically comprises:
UE monitors the pairing down channel corresponding with E-PUCH, obtains the TPC command word corresponding with said carrier wave of carrying in the said down channel.Specifically:
A, for dispatching services, the said pairing down channel corresponding with E-PUCH is the E-AGCH channel, at this moment, the method that said UE obtains the corresponding TPC command word of each carrier wave is:
UE monitors the E-AGCH channel, obtains the TPC command word corresponding with said carrier wave of carrying in this channel;
B, for non-scheduling service, the said pairing down channel corresponding with E-PUCH is the E-HICH channel, at this moment, the method that said UE obtains the corresponding TPC command word of each carrier wave then is:
UE monitors the E-HICH channel, obtains the TPC command word corresponding with said carrier wave of carrying in this channel;
C, for both comprising dispatching services, comprise the situation of non-scheduling service again, the TPC command word is carried by E-AGCH channel and E-HICH respectively; Expect easily; Need adopt the method described in a, the b this moment simultaneously, that is, and and according to the method among a, the b; Respectively dispatching services and non-scheduling service are independently carried out no longer repeat specification.
In addition, upgrade the P of each carrier wave in the step 103 according to said TPC command word
E-base, obtain the corresponding current P of each carrier wave
E-baseMethod comprise:
To each carrier wave, the corresponding P of this carrier wave after utilizing following formula to calculate respectively to upgrade
E-baseValue:
P
E-base, i=P '
E-base, i+ step*TPC
i... ... formula (1)
Wherein, P
E-base, iFor upgrading the corresponding current P of back carrier wave i
E-baseValue, P '
E-base, iBe the corresponding P of this carrier wave i before upgrading
E-baseValue, the step-length of step for upgrading, TPC
iBe the emissive power control command word corresponding with this carrier wave, its value is 1 (expression power increases) or-1 (expression power reduces).
Because said P
E-baseInitial value be PRX
Des_base, and said uplink strengthening data can send repeatedly continuously, thus carry out P at every turn
E-baseMore new capital need be with reference to the P of last time
E-baseValue, therefore above-mentioned formula (1) can also further be transformed to:
Wherein, PRX
Des_base, iBe the corresponding PRX of carrier wave i
Des_baseValue is because each power adjustment is step*TPC
i, therefore
Be P
E-baseBe initialised to the process of this renewal (supposing that update times amounts to n time) sum that adds up of each power adjustment from last time.
Need to prove said P
E-baseValue, safeguard respectively at UE and network side, in the process of above-mentioned steps 101～104, only explained that UE is according to PRX
Des_baseWith the TPC command word to P
E-baseCarry out method for updating, but it will be understood by those skilled in the art that network side when said TPC command word is sent to UE through E-AGCH and/or E-HICH, also is the P that network side is safeguarded according to identical computational methods
E-baseValue is upgraded.This part is identical with prior art, therefore no longer further launches explanation.
In step 104, said according to current P
E-baseCalculate the transmitting power of the said carrier wave that obtains authorizing, the method for sending uplink strengthening data through E-PUCH specifically comprises:
At first, utilize following formula to calculate the transmitting power of said each carrier wave that obtains authorizing respectively,
P
Tx, i=P
E-base, i+ β
E, i+ L.................................. formula (3)
Wherein, P
Tx, iBe the transmitting power of the carrier wave i that obtains authorizing, β
E, iFor UE according to the network side mandate; The gain factor of correspondence when on this carrier wave i, carrying out the E-TFC selection, its value is preestablished by network side, and L is that UE is through measuring the sub-district path loss that the Local Area Broadcast channel obtains; This parameter value that each carrier wave is corresponding is identical, and i is a natural number and corresponding one by one with said carrier wave;
Afterwards, send uplink strengthening data according to above-mentioned transmitting power through E-PUCH.
Understand easily, in multicarrier system,, should guarantee that total transmitting power of each carrier wave is no more than up maximum transmission power when UE is operated in multi-carrier mode following time (being that UE is when synchronization sends upstream data through a plurality of carrier waves).
In addition; For dispatching services; If certain carrier wave was not called in a period of time, owing to channel condition during this period of time generally can change, therefore; If carry out the dispatching services transmission and the time still use employed power control parameters when last time dispatching reusing this carrier wave, just may have greater difference with the actual channel condition of this scheduling.In this case, need the power parameter of this carrier wave be reinitialized usually.Therefore, preferably, further comprise in the said method:
When the scheduling interval on certain carrier wave during greater than network side configuration or the time interval parameter GAP that is provided with in advance, the P corresponding to this carrier wave
E-baseAgain carry out initialization.
Need to prove the said P corresponding to this carrier wave
E-baseAgain carrying out initialization is that network side and UE need carry out equally.
The said method that reinitializes can be P that said carrier wave is corresponding
E-baseRevert to the corresponding initial value of this carrier wave, or the P that said carrier wave is corresponding
E-baseRevert to the corresponding P of the maximum carrier wave of the number of times that is scheduled
E-baseCurrency, or the P that said carrier wave is corresponding
E-baseRevert to each self-corresponding P of other each carrier waves
E-baseThe mean value of value.
At last, need to prove that above-mentioned explanation is to be the description that carry out on the basis with the channel name stipulated in the current standard with carrying out flow process, but does not represent the qualification to embodiment of the present invention.Those skilled in the art are to be understood that; If channel, signaling title and execution flow process to design power control in the follow-up standard change; Title such as E-PUCH changes; The title of perhaps carrying the channels such as E-AGCH or E-HICH of TPC order changes, and can not influence realization of the present invention.That is, in above-mentioned steps, as long as UE can obtain said TPC order and according to said TPC order carrying out P
E-baseRenewal get final product, send through what channel as for this TPC order is concrete, be not the present invention the problem that will discuss.
By above-mentioned visible; The Poewr control method that the embodiment of the invention provides; Through distribute the power control parameters of the correspondence of at least one carrier wave and each carrier wave for UE; Can realize independently power control respectively to each carrier wave, thereby realize the power control of the UE under the multicarrier mode of operation in the multicarrier system.
On the basis of said method, the embodiment of the invention also provides the power control system of a kind of multicarrier UE, and it is as shown in Figure 2 that it forms structure, comprising the UE220 of network side 210 and end side;
Said network side 210 is used to the UE220 distributing carrier wave, and configuration PRX
Des_base, with the carrier wave of said distribution, the PRX of configuration
Des_baseThe TPC command word corresponding with each carrier wave issues UE220, according to the PRX of said configuration
Des_baseFor each carrier wave that distributes disposes corresponding P respectively
E-baseInitial value also is used for selecting partly or entirely to authorize and notify UE220 from the carrier wave of said distribution;
Said UE220 is used to receive the carrier wave of distribution and the PRX of configuration
Des_base, according to the PRX of said configuration
Des_baseFor each carrier wave that distributes disposes corresponding P respectively
E-baseInitial value; Upgrade the corresponding P of each carrier wave according to the corresponding TPC command word of each carrier wave that obtains
E-baseValue obtains the corresponding current P of each carrier wave
E-baseOn the carrier wave that obtains authorizing, according to current P
E-baseCalculate the transmitting power of the said carrier wave that obtains authorizing, send uplink strengthening data through E-DCH physical uplink channel.
Said network side 210 further comprises: selection of configuration module 211, issue module 212 and authorization module 213;
Wherein, said selection of configuration module 211 is used to UE220 distributing carrier wave and notified on authorization module 213, is UE220 configuration PRX
Des_base, according to the PRX of said configuration
Des_baseFor each carrier wave that distributes disposes corresponding P respectively
E-baseInitial value;
The said module 212 that issues is used for the carrier wave that distributes, the PRX of configuration
Des_baseAnd the corresponding TPC command word of each carrier wave is handed down to UE220;
Said authorization module 213 is used for selecting partly or entirely to authorize and notify UE220 from the carrier wave of said distribution.
Said selection of configuration module 211 further comprises: carrier selecting unit 214, PRX
Des_baseDispensing unit 215 and network side P
E-baseInitial value computing unit 216;
Said carrier selecting unit 214 is used to UE220 distributing carrier wave and informing network side P
E-baseInitial value computing unit 216 and authorization module 213;
Said PRX
Des_baseDispensing unit 215 is used for being respectively the corresponding PRX of each carrier wave configuration according to the uplink interference situation of each carrier wave that distributes
Des_base, or, the mean value of the uplink interference situation of each carrier wave that distributes is configured to the shared PRX of all carrier waves
Des_base
Said network side P
E-baseInitial value computing unit 216 is used for as the corresponding respectively PRX separately of each carrier wave
Des_baseThe time, with the corresponding PRX of each carrier wave
Des_baseAs the corresponding P of this carrier wave
E-baseInitial value; PRX when all carrier wave share common
Des_baseThe time, with said shared PRX
Des_baseAs the corresponding P of each carrier wave
E-baseInitial value.
Said UE220 further comprises: parameter receiver module 221, end side P
E-baseInitial value computing module 222, parameter update module 223 and up sending module 224;
Said parameter receiver module 221 is used to receive the carrier information of network side 210 distribution, the PRX of configuration
Des_baseAnd the corresponding TPC command word of each carrier wave;
Said end side P
E-baseInitial value computing module 222 is used for as the corresponding respectively PRX separately of each carrier wave
Des_baseThe time, with the corresponding PRX of each carrier wave
Des_baseAs the corresponding P of this carrier wave
E-baseInitial value; PRX when all carrier wave share common
Des_baseThe time, with said shared PRX
Des_baseAs the corresponding P of each carrier wave
E-baseInitial value;
Said parameter update module 223 is used for upgrading the corresponding P of each carrier wave according to the corresponding TPC command word of each carrier wave that obtains
E-baseValue obtains the corresponding current P of each carrier wave
E-base
Said up sending module 224 is used at the carrier wave that obtains authorizing, according to current P
E-baseValue calculates the transmitting power of the said carrier wave that obtains authorizing, and sends uplink strengthening data through E-DCH physical uplink channel.
Wherein, said parameter receiver module 221 further comprises: configuration receiving element 225 and command word acquiring unit 226;
Said configuration receiving element 225 is used to receive the carrier wave of network side 210 distribution and the PRX of configuration
Des_base
Said command word acquiring unit 226; Be used to monitor the pairing down channel corresponding with E-PUCH; For dispatching services; Monitor the E-AGCH channel and obtain the TPC command word corresponding of carrying in this channel,, monitor the E-HICH channel and obtain the TPC command word corresponding of carrying in this channel with said carrier wave for non-scheduling service with said carrier wave.
Said parameter update module 223 further comprises: parameter update computing unit 227;
Said parameter update computing unit 227 is used to utilize formula P
E-base, i=P '
E-base, i+ step*TPC
iUpgrade the corresponding P of each carrier wave
E-baseValue, wherein, P
E-base, iFor upgrading the corresponding current P of back carrier wave i
E-baseValue, P '
E-base, iBe the corresponding P of this carrier wave before upgrading
E-baseValue, the step-length of step for upgrading, TPC
iBe the emissive power control command word corresponding with this carrier wave that obtains according to the TPC command word, value is 1 or-1.
Said up sending module 224 further comprises: transmitting power computing unit 228 and transmitting element 229;
Transmitting power computing unit 228 is used to utilize formula P
Tx, i=P
E-base, i+ β
E, j+ L calculates the transmitting power of said each carrier wave that obtains authorizing respectively, wherein, and P
Tx, iBe the transmitting power of the carrier wave i that obtains authorizing, P
E-base, iBe the corresponding current P of carrier wave i
E-base, β
E, iBe the gain factor that UE selects according to the network side mandate, L is the sub-district path loss;
Transmitting element 229 is used for according to the transmitting power that calculates, and on said carrier wave, sends uplink strengthening data through E-PUCH.
For dispatching services; If certain carrier wave was not called in a period of time; Because channel condition during this period of time generally can change; Therefore, if carry out the dispatching services transmission and the time still use employed power control parameters when last time dispatching reusing this carrier wave, just may have greater difference with the actual channel condition of this scheduling.In this case, need carry out initialization again to the power parameter of this carrier wave usually.Therefore, preferably, said network side 210 can further include:
By above-mentioned visible; The power control system that the embodiment of the invention provides; The power control parameters of the correspondence through distributing a plurality of carrier waves and each carrier wave for UE can realize independently power control respectively to each carrier wave, thereby realize the power control of the UE under the multicarrier mode of operation in the multicarrier system.
Claims (11)
1. the Poewr control method of a multicarrier user terminal is characterized in that, this method comprises:
Be the user terminal distributing carrier wave, and configuring E-DCH physical uplink channel reference expectation received power PRX
Des_base
Network side and user terminal are according to the PRX of configuration
Des_baseFor each carrier wave that distributes disposes corresponding closed power P respectively
E-baseInitial value;
Obtain the corresponding emissive power control command word of each carrier wave, and upgrade the corresponding P of each carrier wave according to said emissive power control command word
E-baseValue obtains the corresponding current P of each carrier wave
E-baseIt comprises, utilizes formula P
E-base, i=P '
E-base, i+ step*TPC
iUpgrade the corresponding P of each carrier wave
E-baseValue, wherein, P
E-base, iFor upgrading the corresponding current P of back carrier wave i
E-baseValue, P '
E-base, iBe the corresponding P of this carrier wave before upgrading
E-baseValue, the step-length of step for upgrading, TPC
iBe the emissive power control command word corresponding with this carrier wave i, value is+1 or-1;
On the carrier wave that obtains authorizing, user terminal is according to current P
E-baseCalculate the transmitting power of the said carrier wave that obtains authorizing, send uplink strengthening data through E-DCH physical uplink channel; It comprises, utilizes formula P
Tx, i=P
E-base, i+ β
E, i+ L calculates the transmitting power of said each carrier wave that obtains authorizing respectively, wherein, and P
Tx, iBe the transmitting power of the carrier wave i that obtains authorizing, P
E-base, iBe the corresponding current P of carrier wave i
E-base, β
E, iBe the gain factor that user terminal is selected according to the network side mandate, L is the sub-district path loss, and i is a natural number and corresponding one by one with said carrier wave;
According to said transmitting power, on said carrier wave, send uplink strengthening data through E-DCH physical uplink channel.
2. method according to claim 1 is characterized in that, said is that user terminal disposes PRX
Des_baseMethod comprise:
Uplink interference situation according to each carrier wave that distributes is respectively the corresponding PRX of each carrier wave configuration
Des_base, the mean value of the uplink interference situation of each carrier wave that maybe will distribute is configured to the shared PRX of all carrier waves
Des_base
3. method according to claim 2 is characterized in that, said PRX according to configuration
Des_baseFor each carrier wave that distributes disposes corresponding P respectively
E-baseThe method of initial value comprises:
As the corresponding respectively PRX separately of each carrier wave
Des_baseThe time, with the corresponding PRX of each carrier wave
Des_baseAs the corresponding P of this carrier wave
E-baseInitial value; PRX when all carrier wave share common
Des_baseThe time, with said shared PRX
Des_baseAs the corresponding P of each carrier wave
E-baseInitial value.
4. method according to claim 1 is characterized in that, the said method of obtaining the corresponding emissive power control command word of each carrier wave comprises:
Monitor the pairing down channel corresponding, obtain the emissive power control command word corresponding that carries in the said down channel with said carrier wave with E-DCH physical uplink channel.
5. method according to claim 4 is characterized in that, the pairing down channel that said monitoring is corresponding with E-DCH physical uplink channel, and the method for obtaining the emissive power control command word corresponding with said carrier wave that carries in the said down channel comprises:
For dispatching services; Monitor the E-DCH absolute grant channel and obtain the emissive power control command word corresponding that carries in this channel with said carrier wave; And/or; For non-scheduling service, monitor E-DCH HARQ answering indication signal channel and obtain the emissive power control command word corresponding that carries in this channel with said carrier wave.
6. according to each described method in the claim 1 to 5, it is characterized in that this method further comprises:
When the scheduling interval on certain carrier wave during greater than network side configuration or the time interval parameter that is provided with in advance, network side and user terminal are all to the P of said carrier wave correspondence
E-baseAgain carry out initialization.
7. method according to claim 6 is characterized in that, the P corresponding to said carrier wave
E-baseAgain carrying out initialized method comprises:
The P that said carrier wave is corresponding
E-baseRevert to the corresponding P of this carrier wave
E-baseInitial value, or the P that said carrier wave is corresponding
E-baseRevert to the corresponding P of the maximum carrier wave of the number of times that is scheduled
E-baseCurrency, or the P that said carrier wave is corresponding
E-baseRevert to each self-corresponding P of other each carrier waves
E-baseThe mean value of value.
8. the power control system of a multicarrier user terminal comprises network side and user terminal, it is characterized in that:
Said network side is used to the user terminal distributing carrier wave, and configuration PRX
Des_base, with the carrier wave of said distribution, the PRX of configuration
Des_baseThe emissive power control command word corresponding with each carrier wave issues user terminal, according to the PRX of said configuration
Des_baseFor each carrier wave disposes corresponding P respectively
E-baseInitial value also is used for selecting partly or entirely to authorize and informing user terminal from the carrier wave of said distribution; Wherein, said network side comprises:
The selection of configuration module is used to user terminal distributing carrier wave and notified on authorization module, is user terminal configuration PRX
Des_base, according to the PRX of said configuration
Des_baseFor each carrier wave that distributes disposes corresponding P respectively
E-baseInitial value;
Issue module, be used for the carrier wave that distributes, the PRX of configuration
Des_baseAnd the corresponding emissive power control command word of each carrier wave is handed down to user terminal;
Authorization module is used for selecting partly or entirely to authorize and informing user terminal from the carrier wave of said distribution;
Said user terminal is used to receive the carrier wave of distribution and the PRX of configuration
Des_base, according to the PRX of said configuration
Des_baseFor each carrier wave that distributes disposes corresponding P respectively
E-baseInitial value; Upgrade the corresponding P of each carrier wave according to the corresponding emissive power control command word of each carrier wave that obtains
E-baseValue obtains the corresponding current P of each carrier wave
E-baseOn the carrier wave that obtains authorizing, according to current P
E-baseCalculate the transmitting power of the said carrier wave that obtains authorizing, send uplink strengthening data through E-DCH physical uplink channel; Wherein, said user terminal comprises:
The parameter receiver module is used to receive the carrier information of network side distribution, the PRX of configuration
Des_baseAnd the corresponding emissive power control command word of each carrier wave;
P
E-baseThe initial value computing module is used for as the corresponding respectively PRX separately of each carrier wave
Des_baseThe time, with the corresponding PRX of each carrier wave
Des_baseAs the corresponding P of this carrier wave
E-baseInitial value; PRX when all carrier wave share common
Des_baseThe time, with said shared PRX
Des_baseAs the corresponding P of each carrier wave
E-baseInitial value;
The parameter update module is used for upgrading the corresponding P of each carrier wave according to the corresponding emissive power control command word of each carrier wave that obtains
E-baseValue obtains the corresponding current P of each carrier wave
E-baseSaid parameter update module comprises the parameter update computing unit, is used to utilize formula P
E-base, i=P '
E-base, i+ step*TPC
iUpgrade the corresponding P of each carrier wave
E-baseValue, wherein, P
E-base, iFor upgrading the corresponding current P of back carrier wave i
E-baseValue, P '
E-base, iBe the corresponding P of this carrier wave before upgrading
E-baseValue, the step-length of step for upgrading, TPC
iBe the emissive power control command word corresponding with this carrier wave i that obtains according to the emissive power control command word, value is 1 or-1;
Up sending module is used at the carrier wave that obtains authorizing, according to current P
E-baseValue calculates the transmitting power of the said carrier wave that obtains authorizing, and sends uplink strengthening data through E-DCH physical uplink channel; Said up sending module comprises: the transmitting power computing unit is used to utilize formula P
Tx, i=P
E-base, i+ β
E, i+ L calculates the transmitting power of said each carrier wave that obtains authorizing respectively, wherein, and P
Tx, iBe the transmitting power of the carrier wave i that obtains authorizing, P
E-base, iBe the corresponding current P of carrier wave i
E-base, β
E, iBe the gain factor that user terminal is selected according to the network side mandate, L is the sub-district path loss; Transmitting element is used for according to the transmitting power that calculates, and on said carrier wave, sends uplink strengthening data through E-DCH physical uplink channel.
9. system according to claim 8 is characterized in that, said selection of configuration module comprises:
The carrier selecting unit is used to the user terminal distributing carrier wave and notifies P
E-baseInitial value computing unit and authorization module;
PRX
Des_baseDispensing unit is used for being respectively the corresponding PRX of each carrier wave configuration according to the uplink interference situation of each carrier wave that distributes
Des_base, or, the mean value of the uplink interference situation of each carrier wave that distributes is configured to the shared PRX of all carrier waves
Des_base
P
E-baseThe initial value computing unit is used for as the corresponding respectively PRX separately of each carrier wave
Des_baseThe time, with the corresponding PRX of each carrier wave
Des_baseAs the corresponding P of this carrier wave
E-baseInitial value; PRX when all carrier wave share common
Des_baseThe time, with said shared PRX
Des_baseAs the corresponding P of each carrier wave
E-baseInitial value.
10. system according to claim 8 is characterized in that, said parameter receiver module comprises:
The configuration receiving element is used to receive the carrier information of network side distribution and the PRX of configuration
Des-baseValue;
The command word acquiring unit; Be used to monitor the pairing down channel corresponding with E-DCH physical uplink channel; For dispatching services; Monitor the E-DCH absolute grant channel and obtain the emissive power control command word corresponding that carries in this channel, and/or, monitor E-DCH HARQ answering indication signal channel and obtain the emissive power control command word corresponding that carries in this channel with said carrier wave for non-scheduling service with said carrier wave.
11. each described system in 10 is characterized in that according to Claim 8, further comprises in the said network side:
Reinitialize module, be used for when the scheduling interval on certain carrier wave during greater than network side configuration or the time interval parameter that is provided with in advance, to the P corresponding that safeguards in network side and the user terminal with this carrier wave
E-baseAgain carry out initialization, the P that said carrier wave is corresponding
E-baseRevert to initial value, or the P that said carrier wave is corresponding
E-baseRevert to the corresponding P of the maximum carrier wave of the number of times that is scheduled
E-baseCurrency, or the P that said carrier wave is corresponding
E-baseRevert to each self-corresponding P of other each carrier waves
E-baseThe mean value of value.
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| CN2009100818103A CN101860950B (en) | 2009-04-10 | 2009-04-10 | Power control method and system of multicarrier user terminal |
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| CN2009100818103A CN101860950B (en) | 2009-04-10 | 2009-04-10 | Power control method and system of multicarrier user terminal |
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| CN101860950B true CN101860950B (en) | 2012-11-14 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004070957A2 (en) * | 2003-02-04 | 2004-08-19 | Lg Electronics Inc. | Uplink transmission power control method |
| CN1836392A (en) * | 2003-08-19 | 2006-09-20 | 松下电器产业株式会社 | Multicarrier communication apparatus, multicarrier communication system, and transmission power control method |
| CN1998247A (en) * | 2004-06-30 | 2007-07-11 | 桥扬科技有限公司 | Methods and apparatus for power control in multi-carrier wireless systems |
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2009
- 2009-04-10 CN CN2009100818103A patent/CN101860950B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004070957A2 (en) * | 2003-02-04 | 2004-08-19 | Lg Electronics Inc. | Uplink transmission power control method |
| CN1836392A (en) * | 2003-08-19 | 2006-09-20 | 松下电器产业株式会社 | Multicarrier communication apparatus, multicarrier communication system, and transmission power control method |
| CN1998247A (en) * | 2004-06-30 | 2007-07-11 | 桥扬科技有限公司 | Methods and apparatus for power control in multi-carrier wireless systems |
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