CN103391607A - Power control method, device and system for sounding reference signal - Google Patents

Power control method, device and system for sounding reference signal Download PDF

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Publication number
CN103391607A
CN103391607A CN2012101462795A CN201210146279A CN103391607A CN 103391607 A CN103391607 A CN 103391607A CN 2012101462795 A CN2012101462795 A CN 2012101462795A CN 201210146279 A CN201210146279 A CN 201210146279A CN 103391607 A CN103391607 A CN 103391607A
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power
power adjustment
adjusted value
subscriber equipment
information
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CN103391607B (en
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李强
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201210146279.5A priority Critical patent/CN103391607B/en
Priority to PCT/CN2013/070265 priority patent/WO2013166864A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

An embodiment of the invention discloses a power control method, device and system for a sounding reference signal (SRS). The power control method comprises the steps of receiving power adjustment information which is sent by a network side device and comprises at least one power adjustment value of user equipment, selecting a group of power control parameters in a plurality of groups of preset power control parameters, obtaining a current power adjustment value corresponding to the group of selected power control parameters in the at least one power adjustment value on the basis of indication information coming from the network side device, determining an actual power adjustment value on the basis of the current power adjustment value, and finally adjusting SRS sending power according to the actual power adjustment value and the one group of selected power control parameters. According to the technical scheme, SRS power control precision and flexibility under a multipoint service technology network, particularly under a heterogeneous network can be greatly improved.

Description

The Poewr control method of measuring reference signals, device and system
Technical field
The present invention relates to communication technical field, be specifically related to Poewr control method, device and the system of measuring reference signals (SRS, Sounding Reference Signal).
Background technology
At Long Term Evolution (LTE, Long Term Evolution) in system, out-hole run reference signal (SRS, Sounding Reference Signal) be by subscriber equipment (UE, User Equipment) send to evolution base station (eNB, evolved NodeB, the abbreviation base station) a kind of signal, it is mainly used in the measurement of up channel, its measurement result can be used for dispatching, modulating-coding is selected and adjust launch time etc., in addition, under certain conditions, SRS also can be used for carrying out the measurement of down channel.
under traditional network, a subscriber equipment only has a serving BS usually, no matter be namely up or descending, subscriber equipment is all corresponding same serving BS, but, if adopted multipoint service technology (CoMP, Cooperative Multi-Point Transmission), especially under heterogeneous network, subscriber equipment likely can be corresponding a plurality of serving BSs, such as, except the service macro base station, the little base station of presence service also, little base station comprises femto base station (pico), the low power nodes such as femto and Home eNodeB, the situation that up serving BS is different with descending serving BS so just may appear.And in the prior art, the transmitted power of the SRS that is used for the up channel measurement that subscriber equipment sends, the transmitted power that is used for the SRS that down channel measures that sends with subscriber equipment all is based on same serving BS and calculates, be that the same control flow is all adopted in uplink and downlink, therefore, at the multipoint service technical network, especially under heterogeneous network, power control precision and the flexibility of SRS are not high.
Summary of the invention
The embodiment of the present invention provides Poewr control method, device and the system of a kind of SRS, can improve at the multipoint service technical network, especially power control precision and the flexibility of the SRS under heterogeneous network.
The Poewr control method of a kind of SRS comprises:
Receive the power adjustment information that network equipment sends, described power adjustment information comprises at least one power adjustment of subscriber equipment;
Select one group of power contorl parameters in preset multiple power control parameter;
, based on the indication information from network equipment, obtain the current power adjusted value corresponding with described one group of power contorl parameters in described at least one power adjustment;
Determine the actual power adjusted value based on the current power adjusted value;
Transmitted power according to described actual power adjusted value and one group of power contorl parameters adjustment SRS.
The Poewr control method of a kind of SRS comprises:
Determine the corresponding current power adjusted value of one group of power contorl parameters of selecting with subscriber equipment at least one power adjustment of subscriber equipment, described one group of power contorl parameters is selected in preset multiple power control parameter by subscriber equipment; Described current power adjusted value and described one group of power contorl parameters are used for the transmitted power of the SRS of subscriber equipment is adjusted;
Provide the power that comprises at least one power adjustment adjustment information to subscriber equipment, and be used for the indication information at least one power adjustment indication current power adjusted value.
A kind of subscriber equipment comprises:
Receiving element, be used for receiving the power adjustment information that network equipment sends, and described power adjustment information comprises at least one power adjustment of subscriber equipment;
Parameter selection unit, be used for selecting one group of power contorl parameters in preset multiple power control parameter;
The adjusted value selected cell, be used for based on the indication information from network equipment, obtains the current power adjusted value corresponding with described one group of power contorl parameters in described at least one power adjustment;
Determining unit, be used for determining the actual power adjusted value based on the current power adjusted value;
Adjustment unit, be used for the transmitted power according to described actual power adjusted value and described one group of power contorl parameters adjustment SRS.
A kind of network equipment comprises:
Determining unit, be used for determining the corresponding current power adjusted value of one group of power contorl parameters selecting with subscriber equipment at least one power adjustment of subscriber equipment, described one group of power contorl parameters is selected in preset multiple power control parameter by subscriber equipment; Described current power adjusted value and described one group of power contorl parameters are used for the transmitted power of the SRS of subscriber equipment is adjusted;
Transmitting element, be used for providing the power that comprises at least one power adjustment adjustment information to subscriber equipment, and be used for the indication information at least one power adjustment indication current power adjusted value.
A kind of communication system, comprise any subscriber equipment and network equipment that the embodiment of the present invention provides.
the embodiment of the present invention adopts the power adjustment information of at least one power adjustment that comprises subscriber equipment that receives the network equipment transmission, select one group of power contorl parameters in preset multiple power control parameter, then based on the indication information from network equipment, obtain the current power adjusted value corresponding with one group of power contorl parameters of described selection in described at least one power adjustment, and based on the current power adjusted value, determine the actual power adjusted value, adjust finally the transmitted power of SRS according to one group of power contorl parameters of actual power adjusted value and selection.because this scheme can be according to different preset strategies, such as the destination service base station for different, perhaps for control algolithm different in serving BS etc., select different power contorl parameters, and by indication information, come equipment for indicating user to select corresponding power adjustment to adjust the transmitted power of SRS in many group power adjustment, so with respect to prior art, can only calculate regularly the transmitted power of SRS for a serving BS, and can only send power adjustment for a power control flow process, greatly improve at the multipoint service technical network, especially power control precision and the flexibility of the SRS under heterogeneous network.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the flow chart of the Poewr control method of the SRS that provides of the embodiment of the present invention;
Fig. 2 is the flow chart of the Poewr control method of the SRS that provides of the embodiment of the present invention;
Fig. 3 a is the application scenarios figure of the Poewr control method of the SRS that provides of the embodiment of the present invention;
Fig. 3 b is another flow chart of the Poewr control method of the SRS that provides of the embodiment of the present invention;
Fig. 4 is the another flow chart of the Poewr control method of the SRS that provides of the embodiment of the present invention;
Fig. 5 is the structural representation of the subscriber equipment that provides of the embodiment of the present invention;
Fig. 6 is the structural representation of the network equipment that provides of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those skilled in the art, not making under the creative work prerequisite the every other embodiment that obtains, belong to the scope of protection of the invention.
, in order better the embodiment of the present invention to be described, below will carry out schematic illustration to the computational methods of the transmitted power of SRS.As follows:
Before subscriber equipment sends SRS, at first to determine the transmitted power of SRS, for example, specifically can calculate according to following formula the transmitted power P of SRS SRS(i):
P SRS(i)=min{P CMAX(i),P SRS_OFFSET+10log 10(M SRS)+P O_PUSCH(j)+α(j)·PL+f(i)}；
Wherein, P here CMAX(i) be the maximum transmission power of subscriber equipment, P SRS_OFFSET, P O_PUSCH(j) and α (j) be parameter from the configuration of the high level of subscriber equipment or network equipment, M SRSBe the bandwidth of SRS, PL is the path loss information (pathloss) that measures by subscriber equipment, and f (i) is the adjusted value of close-loop power control (power control can referred to as power control).The high level that the present embodiment and subsequent embodiment are mentioned can be specifically RRC(Radio Resource Contro, and Radio Resource is controlled) layer.
By P SRS(i)=min{P CMAX(i), P SRS_OFFSET+ 10log 10(M SRS)+P O_PUSCH(j)+α (j) PL+f (i) } can find out, network equipment can pass through at physical layer descending control channel (PDCCH, Physical downlink control channel) the upper down physical layer control signal (DCI that transmits, Downlink control information) directly control the size of adjusted value (f), thereby control the transmitted power P of the SRS of subscriber equipment SRS(i) size.Wherein, adjusted value f (i) can be an adjusted value δ (i-K) who is directly issued by network equipment, it can be also an accumulated value, be adjusted value f (i)=f (i-1)+δ (i-K), δ (i-K) is that evolution base station is at the adjusted value of i-K subframe for the transmitted power of the SRS of subscriber equipment transmission.
The embodiment of the present invention provides Poewr control method, device and the system of a kind of SRS.Below be elaborated respectively.
Embodiment one,
The present embodiment will be described from the angle of subscriber equipment, and this subscriber equipment is specifically as follows the equipment such as mobile phone, panel computer or notebook computer.
The Poewr control method of a kind of SRS comprises: receive the power adjustment information that network equipment sends, this power adjustment information comprises at least one power adjustment of subscriber equipment; Select one group of power contorl parameters in preset multiple power control parameter; , based on the indication information from network equipment, obtain the current power adjusted value corresponding with one group of power contorl parameters of described selection in this at least one power adjustment; Determine the actual power adjusted value based on the current power adjusted value; Adjust the transmitted power of measuring reference signals according to one group of power contorl parameters of the actual power adjusted value of determining and selection.
As shown in Figure 1, idiographic flow can be as follows:
101, receive the power adjustment information that network equipment sends.
Wherein, this power adjustment information specifically can comprise at least one power adjustment of subscriber equipment, in addition, can also comprise the information that other are relevant to the power adjustment.This power adjustment is specifically provided by network equipment such as base station.During concrete enforcement, can only carry the power adjustment that the destination service base station provides in the power adjustment information, also can carry the power adjustment that a plurality of serving BSs provide, and then by the indication information of network equipment, indicate to adopt which power adjustment, certainly, other mode can also be arranged, at this, be not construed as limiting.
It should be noted that, wherein, network equipment is specifically as follows base station, such as the macro base station of service or little base station of service etc., if there are a plurality of serving BSs in subscriber equipment, this network equipment is specifically as follows any one base station in these a plurality of serving BSs, such as generally being descending serving BS, wherein, the information that other serving BSs provide such as power adjustment etc., can send by the communication between base station this serving BS (being network equipment) to, by this serving BS (being network equipment), send subscriber equipment to.
102, select one group of power contorl parameters in preset multiple power control parameter;
Wherein, each group power contorl parameters namely means corresponding a kind of power control flow, can comprise that the maximum transmission power of subscriber equipment (is P in each group power contorl parameters CMAX(i)), the parameter of high-rise configuration is (such as P SRS_OFFSET, P O_PUSCH(j) and α (j)), the bandwidth of SRS (is M SRS) and the path loss information (pathloss) that measures by subscriber equipment.
Wherein, specifically can select according to preset strategy when selecting power contorl parameters, this preset strategy can arrange according to the demand of practical application, such as being selected according to the destination service base station by subscriber equipment, perhaps, also can select according to the indication of network equipment side, etc.For example, specifically can be as follows:
(1) selected according to the destination service base station by subscriber equipment, as follows:
Determine the destination service base station, according to the destination service base station of determining, select one group of power contorl parameters in preset multiple power control parameter, namely obtain one group of power contorl parameters corresponding to this destination service base station in preset multiple power control parameter.
Wherein, can be by accepting the top signaling configuration of network equipment, then utilize this top signaling to configure to know which serving BS the destination service base station of current business is, perhaps, can also receive other notification messages that network equipment sends, know that according to notification message which serving BS the destination service base station of current business is, etc.For example, if the up serving BS of subscriber equipment is base station A, the descending serving BS of subscriber equipment is base station B, if need to measure the down channel of this subscriber equipment, the destination service base station of the SRS of subscriber equipment transmission is base station B, otherwise, if need to measure the up channel of this subscriber equipment, the destination service base station of the SRS of subscriber equipment transmission is base station A, by that analogy, etc.
In addition, can be the preset multiple power control parameter of SRS, the corresponding serving BS of each group power contorl parameters or a class serving BS.Like this, after having determined the destination service base station, just can find one group of corresponding power contorl parameters according to the destination service base station of determining.
(2) select according to the indication of network equipment; As follows:
For example, specifically can indicate select which group power contorl parameters by carrying an information in the descending control signaling (DCI, Downlink control information) that sends at network equipment.
It should be noted that, wherein, the execution of step 102 and step 101 can be in no particular order.
103,, based on the indication information from network equipment, at least one power adjustment in the power adjustment information that step 101 receives, obtain the current power adjusted value corresponding with one group of power contorl parameters of selection in step 102;
Wherein, indication information can obtain in several ways,, such as by high-rise control signal configuration etc., perhaps,, if in step 101, by DCI, carrys out the through-put power adjustment information, can also obtain this indication information by DCI this moment.For example, specifically can adopt any one following mode to obtain indication information:
(1) indicate by the SRS trigger message position in DCI.
Namely, SRS trigger message position is set in DCI, carry indication information by this SRS trigger message position, be used to indicate subscriber equipment and should select which power adjustment, like this, after subscriber equipment receives DCI, just can obtain this indication information by the SRS trigger message position in this DCI, thereby obtain the current power adjusted value corresponding with one group of power contorl parameters of selection in step 102 according to this indication information at least one power adjustment.Such as, if have the SRS trigger message position of 1bit in DCI, and with first group power contorl parameters year correspondence control flow be called " power control flow process 1 ", with second group power contorl parameters year correspondence control flow be called " power control flow process 2 ", so, if the trigger message position is set to ' 0 ', this DCI power adjustment of carrying will be used to power control flow process 1, if the trigger message position is set to ' 1 ', the power adjustment of carrying for the information bit of through-put power adjustment information so will be used to power control flow process 2.
(2) indicate by wireless network temporary identity sign (PC-RNTI, Power Control-Radio Network Temporary Identifier).
Similar with (1) mode, (2) mode is also by carry indication information in DCI, different from (1) mode is, (2) mode is not direct indication, but by adopting PC-RNTI to carry out scrambling to DCI, then determine current PC-RNTI by subscriber equipment by this DCI being carried out descrambling, and then determine the indication information of the PC-RNTI indication that this is current.Before, the Poewr control method of this SRS can also comprise namely in step, ", based on the indication information from network equipment, to obtain the current power adjusted value corresponding with one group of power contorl parameters of described selection in described at least one power adjustment ":
By the DCI descrambling is determined current PC-RNTI, to determine the described indication information of the PC-RNTI indication that this is current.
for example, if with first group power contorl parameters year correspondence control flow be called " power control flow process 1 ", with second group power contorl parameters year correspondence control flow be called " power control flow process 2 ", and the corresponding PC-RNTI of power control flow process 1 is " XXXX ", the corresponding PC-RNTI of power control flow process 2 is " YYYY ", so, after subscriber equipment receives DCI, adopt respectively " XXXX " and " YYYY " to carry out descrambling to DCI, " if XXXX " can descrambling success, show that the power adjustment of carrying in this DCI is applicable to power control flow process 1, " if YYYY " can descrambling success, show that the power adjustment of carrying in this DCI is applicable to power control flow process 2, by that analogy.
(3) configure to indicate by high-level signaling.
Namely in the power adjustment information (step 101) that receives the network equipment transmission before, the Poewr control method of this SRS can also comprise: receive the high-level signaling that network equipment sends, wherein, this high-level signaling carries indication information.
104, determine the actual power adjusted value based on the current power adjusted value; For example, specifically can be as follows:
(1) if do not specify the obtain manner of actual power adjusted value, directly with the current power adjusted value as actual power adjusted value, i.e. f ad(i)=δ (i-K), wherein, f ad(i) expression actual power adjusted value, δ (i-K) expression current power adjusted value.
(2) if specified the obtain manner of actual power adjusted value, such as the obtain manner of indicating the actual power adjusted value is direct indicating mode, or the obtain manner of indicating this actual power adjusted value is accumulation mode etc., at this moment, after definite current power adjusted value, also need further according to the obtain manner of actual power adjusted value, to determine the actual power adjusted value, as follows:
If by the indication of high-level signaling, know that the obtain manner of actual power adjusted value is direct indicating mode, is defined as actual power adjusted value, i.e. f with the current power adjusted value ad(i)=δ (i-K), wherein, f ad(i) expression actual power adjusted value, δ (i-K) expression current power adjusted value.Perhaps,
If by the indication of high-level signaling, know that the obtain manner of actual power adjusted value is the accumulation mode, with the actual power adjusted value of last time and described current power adjusted value and as actual power adjusted value, i.e. f ad(i)=f ad(i-1)+δ (i-K), wherein, f ad(i) expression actual power adjusted value, δ (i-K) expression current power adjusted value, f ad(i-1) the last actual power adjusted value of expression.Perhaps,
In addition, subscriber equipment before sending SRS, also may receive a plurality of power adjustment for it, can also adopt another kind of mode to obtain the actual power adjusted value this moment.Namely as follows:
If by the indication of high-level signaling, know that the obtain manner of actual power adjusted value is direct indicating mode; At the current power adjusted value that obtains, have when a plurality of, one that selects to receive finally in a plurality of current power adjusted values as the actual power adjusted value.Perhaps,
If by the indication of high-level signaling, know that the obtain manner of actual power adjusted value is the accumulation mode; At the current power adjusted value that obtains, have when a plurality of, with a plurality of current power adjusted values and as the actual power adjusted value.
It should be noted that, because the validity for the power adjustment information before emission SRS has a time restriction, for example, SRS sends in the n subframe, the power adjustment information of so only receiving before the n-k subframe is just effective, wherein, the value of k can arrange according to the demand of practical application.So, should be understood that, the embodiment of the present invention said " current power adjustment information " all refers to effective power adjustment information; Such as, if SRS sends in the n subframe, and system is arranged on the power adjustment information of receiving before the n-k subframe and just effectively talks about, previous examples said " the current power adjusted value has a plurality of " refers to, before k subframe before the SRS emission (namely before the n-k subframe),, if having a plurality of current power adjustment information, be used as the actual power adjusted value according to last the current power adjustment information that receives before the n-k subframe so, by that analogy, etc.
Also it should be noted that, wherein, the high-level signaling configuration can be configured by sending high-level signaling by network equipment before subscriber equipment is determined the actual power adjusted value, and the method that configures about high-level signaling specifically can, referring to prior art, not repeat them here.
105, adjust the transmitted power of SRS according to the one group of power contorl parameters that gets in the actual power adjusted value of determining in step 102 and step 103.
For example, if the transmitted power P of SRS SRS(i) represent specifically how to adjust the transmitted power P that can adopt following formula to calculate SRS SRS(i):
P SRS(i)=min{P CMAX(i),P SRS_OFFSET+10log 10(M SRS)+P O_PUSCH(j)+α(j)·PL+f(i)}；
Wherein, P here CMAX(i) be the maximum transmission power of subscriber equipment, P SRS_OFFSET, P O_PUSCH(j) and α (j) be the power contorl parameters of high-rise configuration, M SRSBe the bandwidth of SRS, PL is path loss (path loss) information (pathloss) that measures by subscriber equipment, and f (i) is the close-loop power control adjusted value, i.e. the embodiment of the present invention said " actual power adjusted value ".
as from the foregoing, the present embodiment adopts the power adjustment information of at least one power adjustment that comprises subscriber equipment that receives the network equipment transmission, select one group of power contorl parameters in preset multiple power control parameter, then based on the indication information from network equipment, obtain the current power adjusted value corresponding with one group of power contorl parameters of described selection in described at least one power adjustment, and based on the current power adjusted value, determine the actual power adjusted value, adjust finally the transmitted power of SRS according to one group of power contorl parameters of actual power adjusted value and selection.because this scheme can be according to different preset strategies, such as the destination service base station for different, perhaps for control algolithm different in serving BS etc., select different power contorl parameters, and by indication information, come equipment for indicating user to select corresponding power adjustment to adjust the transmitted power of SRS in many group power adjustment, so with respect to prior art, can only calculate regularly the transmitted power of SRS for a serving BS, and can only send power adjustment for a power control flow process, greatly improve at the multipoint service technical network, especially power control precision and the flexibility of the SRS under heterogeneous network.
Embodiment two,
Method described according to embodiment one, wherein, the power adjustment information specifically can be passed through media Access Layer (MAC, Media Access Control) signaling is transmitted, and perhaps, also can adopt descending control signaling (DCI, Downlink control information) at physical layer descending control channel (PDCCH, Physical downlink control channel) transmit on, that is, the step 101 of implementing in specifically can be as follows:
1, receive the power adjustment information that network equipment transmits by the MAC signaling; Perhaps,
2, receive the power adjustment information that network equipment transmits by DCI.For example, specifically can adopt following any one mode:
(1) receive the DCI that network equipment sends, for convenience, be the first descending control signaling referred to here as a DCI(), the one DCI can comprise an information bit that is used for the delivering power adjustment information, wherein, this information bit is divided at least two sub-information bits, and each sub-information bit is carried a power adjustment.
Such as, be divided at least two sub-information bits as example take an information bit, so, can allow one of them sub-information bit carry the power adjustment that serving BS A provides, another sub-information bit is carried the power adjustment that serving BS B provides.
(2) receive the DCI that network equipment sends, for convenience, referred to here as the 2nd DCI(, be the second descending control signaling), the 2nd DCI can comprise at least two information bits that are used for the delivering power adjustment information, wherein, each information bit is carried a power adjustment.
Such as,, to comprise two information bits as example, so, can allow one of them information bit carry the power adjustment that serving BS A provides, another information bit is carried the power adjustment that serving BS B provides.
(3) receive the DCI that network equipment sends, for convenience, referred to here as the 3rd DCI(, be the 3rd descending control signaling), the 3rd DCI can comprise an information bit that is used for the delivering power adjustment information, wherein, this information bit is carried a power adjustment.
Such as,, if the destination service base station is serving BS A, allow this information bit carry the power adjustment that serving BS A provides, if the destination service base station is serving BS B, allow this information bit carry the power adjustment that serving BS B provides, by that analogy, etc.
Receiving DCI(that network equipment sends such as a DCI, the 2nd DCI or the 3rd DCI) after, the indication information that can side apparatus Network Based provides is known at least one power adjustment of carrying in DCI, which can be used as the current power adjusted value, wherein, explanation about indication information specifically can, referring to embodiment one, not repeat them here.
In addition,, in order to improve efficiency of transmission, can carry the power adjustment information for a plurality of subscriber equipmenies in DCI, then by high-level signaling, configure and inform that its corresponding power adjustment information of subscriber equipment specifically gets final product which position in DCI.Such as, DCI can carry power adjustment information for subscriber equipment A, for the power adjustment information of subscriber equipment B with for the power adjustment information of subscriber equipment C, etc., subscriber equipment A is after receiving this DCI, can configure the adjustment information that finds corresponding to subscriber equipment A from this DCI according to high-level signaling, in like manner, subscriber equipment B is after receiving this DCI, also can configure the adjustment information that finds corresponding to subscriber equipment B from this DCI according to preset high-level signaling, by that analogy.That is, if DCI has comprised the power adjustment information for a plurality of subscriber equipmenies, the method can also comprise:
Receive the high-level signaling of the corresponding relation that carries described at least one power adjustment and subscriber equipment of network equipment transmission;
This moment, described ", based on the indication information from network equipment, obtaining the current power adjusted value corresponding with one group of power contorl parameters of described selection (being step 103) in described at least one power adjustment " before, can also comprise:
, based on the corresponding relation of described at least one power adjustment and subscriber equipment, be that described subscriber equipment extracts described at least one power adjustment in the power adjustment information.
In addition, in order to improve the fail safe of signalling, network equipment is sending DCI(such as a DCI, the 2nd DCI or the 3rd DCI) time, can also be encrypted DCI, then according to the manner of decryption that both sides' (being subscriber equipment and network equipment) consult, DCI is carried out scrambling by subscriber equipment, to obtain DCI.Such as, network equipment can give user device configuration a sign (ID, Identifier), as PC-RNTI,, when network equipment need to send carry the DCI of power adjustment the time to this subscriber equipment, just can adopt PC-RNTI to carry out scrambling to this DCI that receives, after subscriber equipment receives DCI after encryption, DCI according to the PC-RNTI of closely knowing after to this encryption carries out descrambling, just can get power adjustment wherein.Optionally, for on the same group power contorl parameters not, also can configure different PC-RNTI, subscriber equipment carries out descrambling by different PC-RNTI and obtains not on the same group the corresponding power adjustment of power contorl parameters, at this moment, this scrambling and descrambling operation are equivalent to be used to refer to the indication information of selecting which power adjustment, specifically can referring in embodiment one about the indicating mode of indication information, do not repeat them here.Certainly,, on the same group power contorl parameters not, can configure identical PC-RNTI, not repeat them here.
Because existing DCI has different form (DCI format), can exist an information bit to be used for the transmitting SRS power adjustment in some form, such as DCI format0, DCI format4, DCI format3 and DCI format3a.So, can be on the basis of existing DCI, by " information bit that is used for the delivering power adjustment information " divided, or increase new " information bit that is used for the delivering power adjustment information " and carry a plurality of power adjustment.
For example, in prior art, there are 2 (bit) to be used for carrying power adjustment (such as being the power adjustment that descending serving BS A provides) for existing power control flow in certain DCI, so in embodiments of the present invention, can be two parts (namely being divided into two sub-information bits) with the 2bit cutting, front 1bit is used for carrying the power adjustment for existing power control flow, and then 1bit can be used for carrying the power adjustment (such as being the power adjustment that up serving BS B provides) for newly-increased power control flow.
Again for example, in prior art, the original size of DCI is 20bit, after the high-level signaling configuration, the size of this DCI can be increased to 22bit so, and wherein, newly-increased 2bit is used for carrying the power adjustment for newly-increased.
Perhaps, also can continue to use existing DCI form, just before sending DCI, by network equipment, by high-level signaling, be configured and inform subscriber equipment, the entrained power adjustment of current DCI is that the power adjustment which serving BS provides gets final product.
It should be noted that, in order to reduce amount of information, in the various load modes of above-mentioned power adjustment information, the power adjustment that sends can not be concrete numerical value, but then an index value is searched the power adjustment mapping table by subscriber equipment according to the index value that receives and is obtained the concrete numerical value of corresponding power adjustment.
Below only to carry a power adjustment (namely carrying altogether two power adjustment) in DCI, describe as example more, should be understood that, the power adjustment of carrying can be for a plurality of, such as, one " information bit that is used for the delivering power adjustment information " can be divided into 3 parts or 4 parts, 5 parts etc. even, each part is a sub-information bit, and a sub-information bit is carried a power adjustment; Again such as, DCI can also be increased by two information bits or 3 information bits, etc., each information bit can be carried a power adjustment, by that analogy, does not repeat them here.In addition, except carrying the information bit for the delivering power adjustment information, can also carry SRS trigger message position in this DCI, be used to indicate and select which power control value at least one power adjustment, see embodiment one for details, not repeat them here.such as, if have the SRS trigger message position of 1bit in DCI, the information bit that is used for the through-put power adjustment information of 2bit, and with first group power contorl parameters year correspondence control flow be called " power control flow process 1 ", with second group power contorl parameters year correspondence control flow be called " power control flow process 2 ", so, if the trigger message position is set to " 0 ", this DCI power adjustment of carrying will be used to power control flow process 1, if the trigger message position is set to " 1 ", the power adjustment of carrying for the information bit of through-put power adjustment information so will be used to power control flow process 2.
In addition, also it should be noted that, if adopt DCI to carry out the transmission of power control information, subscriber equipment when receiving the DCI of network equipment transmission, can also first judge DCI, determines that DCI is applicable to the Poewr control method that the embodiment of the present invention provides, if applicable, just perform step 101, otherwise, adopt the method for prior art to carry out the power control of SRS.For example, specifically can adopt following any one method to judge:
1, judge DCI format(form) whether have SRS and trigger ability, if, show and go for the Poewr control method that the embodiment of the present invention provides, if not, the power that adopts the method for prior art to carry out SRS is controlled.Such as, DCI format 1a, DCI format 2b, DCI format 2c, DCIformat 0 or DCI format 4 just have SRS and trigger ability, therefore can be applicable to the Poewr control method that the embodiment of the present invention provides.
2, judge whether DCI format meets the following conditions simultaneously: (1) this DCI form is used for carrying out downlink data dispatching; (2) this DCI form has SRS triggering ability.If can meet simultaneously this two conditions, show and go for the Poewr control method that the embodiment of the present invention provides,, if can not meet simultaneously this two conditions, adopt the method for prior art to carry out the power control of SRS.Such as, DCI format 1a, DCI format 2b or DCI format 2c just can meet above two conditions, therefore can be applicable to the Poewr control method that the embodiment of the present invention provides.
3, judge whether DCI format meets the following conditions simultaneously: (1) this DCI form is used for carrying out downlink data dispatching; (2) this DCI form has SRS triggering ability; (3) triggering of SRS has been carried out in the SRS trigger message position of this DCI.If can meet simultaneously this three conditions, show and go for the Poewr control method that the embodiment of the present invention provides,, if can not meet simultaneously this three conditions, adopt the method for prior art to carry out the power control of SRS.Such as, DCI format 1a, DCI format 2b or DCIformat 2c just can meet above three conditions, when DCI format1a/2b/2c is handed down to subscriber equipment, and subscriber equipment has carried out the SRS triggering according to SRS trigger message position wherein, goes for the Poewr control method that the embodiment of the present invention provides.
4, judge whether DCI format meets the following conditions simultaneously: (1) this DCI form is used for carrying out uplink data scheduling; (2) this DCI form has SRS triggering ability.If can meet simultaneously this two conditions, show and go for the Poewr control method that the embodiment of the present invention provides,, if can not meet simultaneously this two conditions, adopt the method for prior art to carry out the power control of SRS.Such as, DCI format 0 or DCI format 4 just can meet above two conditions, therefore can be applicable to the Poewr control method that the embodiment of the present invention provides.
5, judgement DCI format meets the following conditions simultaneously: (1) this DCI form is used for carrying out uplink data scheduling; (2) this DCI form has SRS triggering ability; (3) triggering of SRS has been carried out in the SRS trigger message position of this DCI.If can meet simultaneously this three conditions, show and go for the Poewr control method that the embodiment of the present invention provides,, if can not meet simultaneously this three conditions, adopt the method for prior art to carry out the power control of SRS.Such as, DCI format 0 or DCI format 4, and carried out the SRS triggering, just can meet above three conditions, therefore can be applicable to the Poewr control method that the embodiment of the present invention provides.
6, judge that whether DCI format is used for group's power and controls and adjust, if, show and go for the Poewr control method that the embodiment of the present invention provides, if not, the power that adopts the method for prior art to carry out SRS is controlled.Control and adjust such as DCI format3 or DCI format3a just can be used for group's power, therefore can be applicable to the Poewr control method that the embodiment of the present invention provides.
As from the foregoing, the embodiment of the present invention is on the basis of embodiment one, provide various ways to receive the power adjustment information that network equipment sends, therefore, except can reaching the described effective effect of embodiment one, flexibility ratio and selectivity that scheme realizes have also further been improved, and, the method of these delivering power adjustment information only needs existing DCI is done simple the modification, can be suitable for most application scenarioss, realizes comparatively simple.
Embodiment three,
The present embodiment will be described from the angle of network equipment, and this network equipment is specifically as follows base station, such as the macro base station of service or little base station of service etc.
A kind of Poewr control method of measuring reference signals, as shown in Figure 2, idiographic flow can be as follows:
201, determine the corresponding current power adjusted value of one group of power contorl parameters of selecting with subscriber equipment at least one power adjustment of subscriber equipment.
Wherein, " one group of power contorl parameters that subscriber equipment is selected " selected in preset multiple power control parameter by subscriber equipment; Current power adjusted value and this " power contorl parameters of a group selection " are used for the transmitted power of the measuring reference signals of subscriber equipment is adjusted; Specifically can, referring to front embodiment, not repeat them here.
202, provide the power that comprises at least one power adjustment adjustment information to subscriber equipment, and be used for the indication information at least one power adjustment indication current power adjusted value.
For example, specifically can be by the MAC signaling to subscriber equipment transmitted power adjustment information; Perhaps, also can, by DCI to subscriber equipment transmitted power adjustment information, wherein, by DCI, come the mode of transmitted power adjustment information specifically can, referring to embodiment two, not repeat them here.
Wherein, indication information can offer subscriber equipment in several ways, such as by high-rise control signal, configuring to offer subscriber equipment etc., perhaps,, if by DCI, carry out the through-put power adjustment information, can also send this indication information to subscriber equipment by DCI this moment.For example, specifically can adopt any one following mode to obtain indication information:
(1) indicate by the SRS trigger message position in DCI,, referring to embodiment one, do not repeat them here.
(2) indicate by PC-RNTI;
This moment, by DCI,, to before subscriber equipment transmitted power adjustment information, can also comprise:
Adopt described PC-RNTI to carry out scrambling to described descending control signaling, so that subscriber equipment is determined current PC-RNTI by this DCI being carried out descrambling, and then determine the described indication information that described current PC-RNTI indicates.
, referring to embodiment one, do not repeat them here.
(3) configure to indicate by high-level signaling,, referring to embodiment one, do not repeat them here.
In addition,, in order to improve efficiency of transmission, can carry the power adjustment information for a plurality of subscriber equipmenies in DCI, then by high-level signaling, configure and inform that its corresponding power adjustment information of subscriber equipment specifically gets final product which position in DCI.Even the power adjustment information also comprises other at least one power adjustment of other subscriber equipmenies, step " provides the power adjustment information that comprises at least one power adjustment (being step 202) to subscriber equipment " before, the Poewr control method of this SRS can also comprise:
Send high-level signaling to subscriber equipment, carry the corresponding relation of described at least one power adjustment and subscriber equipment in this high-level signaling, so that subscriber equipment, according to based on this " corresponding relation of at least one power adjustment and subscriber equipment ", extracts described at least one power adjustment for this subscriber equipment in the power adjustment information.
as from the foregoing, the present embodiment adopts determines the corresponding current power adjusted value of one group of power contorl parameters of selecting with subscriber equipment at least one power adjustment of subscriber equipment, then provide the power that comprises this at least one power adjustment adjustment information to subscriber equipment, and the indication information that is used for indicating at least one power adjustment the current power adjusted value, so that subscriber equipment can select corresponding power adjustment to adjust the transmitted power of SRS for different power contorl parameters in many group power adjustment, greatly improve at the multipoint service technical network, especially power control precision and the flexibility of the SRS under heterogeneous network.
Embodiment four,
Method described according to front embodiment, below will elaborate for example.
As shown in Fig. 3 a, be integrated with the output control device that the embodiment of the present invention provides in subscriber equipment A, and this subscriber equipment A there are two serving BSs: macro base station B and little base station C, wherein, macro base station B is the descending serving BS of subscriber equipment A, and little base station C is the up serving BS of subscriber equipment A.
At first, two groups of power contorl parameters can be set for SRS is preset, one group of corresponding macro base station B of power contorl parameters, the corresponding little base station C of another group power contorl parameters.Secondly, little base station C need to communicate with macro base station B, and the power adjustment that little base station C is provided sends to macro base station B, by macro base station B, offers subscriber equipment A.As shown in Fig. 3 b, the flow process of the Poewr control method of SRS specifically can be as follows:
301, macro base station B passes through MAC signalling power adjustment information to subscriber equipment A, wherein, this power adjustment information comprises power adjustment 1 and power adjustment 2, the power adjustment that power adjustment 1 provides for macro base station B, the power adjustment that power adjustment 2 provides for little base station C.Power adjustment 1 is arranged in the front 1bit of power adjustment information, and power adjustment 2 is arranged in the rear 1bit of power adjustment information.
It should be noted that, power adjustment 2 can send macro base station B to by the communication between little base station C and macro base station B, specifically can, referring to prior art, not repeat them here.
302, subscriber equipment A determines to send the destination service base station of SRS, and according to the destination service base station of determining, selects one group of corresponding power contorl parameters from two groups of preset power contorl parameters.
For example, in the present embodiment, if need to measure down channel, the destination service base station is macro base station B, if need to measure up channel, the destination service base station is little base station C, for convenience, below will describe as macro base station B as example take the destination service base station.
If the destination service base station of determining is macro base station B, this moment, subscriber equipment A selects the one group power contorl parameters corresponding with macro base station B.
Wherein, one group of power contorl parameters can comprise the maximum transmission power P of subscriber equipment CMAX(i), the parameter P of high-rise configuration SRS_OFFSET, P O_PUSCH(j) and α (j), the bandwidth M of SRS SRS, and the path loss information PL that measures by subscriber equipment A.
303, subscriber equipment A configures from the power adjustment information according to high-level signaling, the corresponding current power adjusted value of one group of power contorl parameters of selecting in obtaining step 302.
Wherein, indication information is carried in this high-level signaling configuration, be used to indicate this position of current power adjustment in the power adjustment information, in addition, the obtain manner of actual power adjusted value is also indicated in this high-level signaling configuration, and this high-level signaling configuration specifically can be configured to subscriber equipment A by sending high-level signaling by macro base station B.
For example, if need to measure to down channel (being that the destination service base station is macro base station B), at this moment, subscriber equipment A can know that the current power adjusted value specifically is arranged on the front 1bit of power adjustment information according to the high-level signaling configuration, so the front 1bit from the power adjustment information extracts the current power adjusted value, namely extracts power adjustment 1.
Certainly, for easy to carry and saving amount of information, this current power adjustment can not be a concrete numerical value, but index value, then obtained the concrete numerical value of power adjustment by searching the power adjustment mapping table according to this index value by subscriber equipment A, for convenience, below will be specially an index value take this current power adjustment describes as example.Wherein, the power adjustment mapping table specifically can be referring to table one.
Table one:
Power is controlled adjusted value Accumulation mode δ [dB] Directly indicate δ [dB]
00 -1 -4
01 0 -1
10 1 1
11 3 4
…… …… ……
It should be noted that, the power adjustment mapping table shown in table one is only a kind of pattern wherein, should be understood that, the power adjustment mapping table can also exist with other pattern, does not repeat them here.
In addition, also it should be noted that, except adopting high-level signaling, carry indication information, can also adopt other mode to carry indication information, see front embodiment for details, do not repeat them here.
304, subscriber equipment A determines the obtain manner of actual power adjusted value according to high-level signaling configuration, if the obtain manner of this actual power adjusted value is direct indicating mode, directly should current power adjustment as actual power adjusted value, i.e. f ad(i)=δ (i-K); If the obtain manner of this actual power adjusted value is the accumulation mode, will obtain last actual power adjusted value, with the actual power adjusted value of last time and current power adjusted value and as actual power adjusted value, i.e. f ad(i)=f ad(i-1)+δ (i-K).Wherein, f ad(i) expression actual power adjusted value, δ (i-K) expression current power adjusted value, f ad(i-1) the last actual power adjusted value of expression.
For example, if in step 303, the index value of the current power adjusted value of determining is " 11 ", by look-up table one as can be known, directly the concrete numerical value of the corresponding current power adjusted value of indicating mode is " 4 ", and the concrete numerical value of the corresponding current power adjusted value of accumulation mode is " 3 ", if configuration determines that the obtain manner of actual power adjusted value is direct indicating mode according to high-level signaling, so, according to f ad(i)=δ (i-K) as can be known, actual power adjusted value f ad(i) concrete numerical value is " 4 "; If determine that according to high-level signaling configuration the obtain manner of actual power adjusted value is bulk billing system, and last actual power adjusted value is " 1 ", so, and according to f ad(i)=f ad(i-1)+δ (i-K) as can be known, actual power adjusted value f ad(i) concrete numerical value is " 2 ".
305, subscriber equipment A calculates the transmitted power of SRS according to the one group of power contorl parameters that gets in the actual power adjusted value that obtains in step 304 and step 302, and is as follows:
P SRS(i)=min{P CMAX(i),P SRS_OFFSET+10log 10(M SRS)+P O_PUSCH(j)+α(j)·PL+f ad(i)}；
Wherein, P SRS(i) transmitted power of expression SRS, P CMAX(i) be the maximum transmission power of subscriber equipment, P SRS_OFFSET, P O_PUSCH(j) and α (j) be the parameter of high-rise configuration, M SRSBe the bandwidth of SRS, PL is the path loss information that measures by subscriber equipment.
306, the transmitted power of the SRS that obtains according to step 305 sends SRS to the destination service base station, such as, if the destination service base station is macro base station B, the transmitted power of the SRS that obtains according to step 305 sends SRS to macro base station B.
It should be noted that, in the present embodiment, mainly to select power contorl parameters to describe as example take subscriber equipment according to the destination service base station, should be understood that, also can should select which group power contorl parameters by the direct indication in base station, the method of its realization, similar to the above, do not repeat them here.In addition, in the present embodiment, only to come the delivering power adjustment information to describe as example by the MAC signaling, should be understood that, can also carry out the delivering power adjustment information by the DCI signaling, wherein, the DCI signaling method of carrying the power adjustment information specifically can, referring to embodiment two, not repeat them here.
as from the foregoing, the macro base station B of the embodiment of the present invention can send the power adjustment information of two power adjustment that comprise subscriber equipment A to subscriber equipment A by the MAC signaling, determine the destination service base station by subscriber equipment A, obtain one group of corresponding power contorl parameters in preset multiple power control parameter according to the destination service base station, then macro base station B comes equipment for indicating user to select the current power adjusted value by carry indication information in high-level signaling, and then definite actual power adjusted value, calculate finally the transmitted power of SRS according to actual power adjusted value and the one group of power contorl parameters that gets.Because this scheme can be for different destination service base stations, adopt different power contorl parameters and actual power adjusted value to calculate the transmitted power of SRS, so with respect to prior art, can only calculate regularly the transmitted power of SRS for a serving BS, and can only send power adjustment for a power control flow process, the power control precision and the flexibility that greatly improve the SRS under heterogeneous network.
Embodiment five,
Subscriber equipment before sending SRS, also may receive a plurality of power adjustment for it, therefore, the method for the calculating actual power adjusted value that provides except embodiment four, can also adopt another kind of computational methods, below will describe for example.
In the present embodiment, still as an example of the application scenarios in Fig. 3 a example, describe.Different from embodiment four is in the present embodiment, by the MAC signaling, not carry out the delivering power control information, but by the DCI signaling, carry out the delivering power control information.
At first, two groups of power contorl parameters can be set for SRS is preset, one group of corresponding macro base station B of power contorl parameters, the corresponding little base station C of another group power contorl parameters.Secondly, little base station C need to communicate with macro base station B, and the power adjustment that little base station C is provided sends to macro base station B, by macro base station B, offers subscriber equipment A.As shown in Figure 4, the flow process of the Poewr control method of SRS specifically can be as follows:
401, macro base station B passes through DCI delivering power adjustment information to subscriber equipment A, wherein, this power adjustment information comprises power adjustment 1 and power adjustment 2, the power adjustment that power adjustment 1 provides for macro base station B, the power adjustment that power adjustment 2 provides for little base station C.
Wherein, the method that DCI carries the power adjustment information has multiple, specifically can be referring to embodiment two, in the present embodiment, describe as example to include two information bits that are used for the delivering power adjustment information in DCI, wherein, first information bit is carried 1, the second information bit of power adjustment and is carried power adjustment 2.
It should be noted that, power adjustment 2 can send macro base station B to by the communication between little base station C and macro base station B, specifically can, referring to prior art, not repeat them here.
402, subscriber equipment A determines to send the destination service base station of SRS, and according to the destination service base station of determining, selects one group of corresponding power contorl parameters from two groups of preset power contorl parameters.
For example, in the present embodiment, if need to measure down channel, the destination service base station is macro base station B, if need to measure up channel, the destination service base station is little base station C, for convenience, below will describe as macro base station B as example take the destination service base station.
If the destination service base station of determining is macro base station B, this moment, subscriber equipment A selects the one group power contorl parameters corresponding with macro base station B.
Wherein, one group of power contorl parameters can comprise the maximum transmission power P of subscriber equipment CMAX(i), the parameter P of high-rise configuration SRS_OFFSET, P O_PUSCH(j) and α (j), the bandwidth M of SRS SRS, and the path loss information PL that measures by subscriber equipment A.
403, subscriber equipment A configures from the power adjustment information according to high-level signaling, the corresponding current power adjusted value of one group of power contorl parameters of selecting in obtaining step 402.
Wherein, indication information is carried in this high-level signaling configuration, be used to indicate this position of current power adjustment in the power adjustment information, in addition, the obtain manner of actual power adjusted value is also indicated in this high-level signaling configuration, and this high-level signaling configuration specifically can be configured to subscriber equipment A by sending high-level signaling by macro base station B.
For example, if need to measure to down channel (being that the destination service base station is macro base station B), at this moment, subscriber equipment A can know that the corresponding current power adjusted value of one group of power contorl parameters of selecting in step 402 specifically is arranged in DCI first " information bit that is used for the delivering power adjustment information " according to the high-level signaling configuration, so first from DCI " information bit that is used for the delivering power adjustment information " extracts the current power adjusted value, namely extracts power adjustment 1.
Certainly, for easy to carry and saving amount of information, this current power adjustment can not be a concrete numerical value, but index value, then obtained the concrete numerical value of power adjustment by searching the power adjustment mapping table according to this index value by subscriber equipment A, for convenience, below will be specially an index value take this current power adjustment describes as example.Wherein, the power adjustment mapping table specifically can be referring to table one.
In addition, also it should be noted that, except adopting high-level signaling, carry indication information, can also adopt other mode to carry indication information, see front embodiment for details, do not repeat them here.
404, subscriber equipment A is according to the obtain manner of the definite actual power adjusted value of high-level signaling configuration, if the obtain manner of this actual power adjusted value is direct indicating mode, and the current power adjusted value that got before subscriber equipment A transmission SRS has a plurality of, selects a power adjustment of receiving finally as the actual power adjusted value in these a plurality of current power adjusted values; If the obtain manner of this actual power adjusted value is the accumulation mode, and send the current power adjusted value that gets before SRS have a plurality of, will these a plurality of current power adjusted values and as the actual power adjusted value.
For example, if in step 403, the index value of the current power adjusted value of determining is followed successively by " 00 ", " 01 ", " 10 " and " 11 ", by look-up table one as can be known, directly the concrete numerical value of the corresponding current power adjusted value of indicating mode is followed successively by " 4 ", " 1 ", " 1 " and " 4 ", the concrete numerical value of the corresponding current power adjusted value of accumulation mode is followed successively by " 1 ", " 0 ", " 1 " and " 3 ", if configuration determines that the obtain manner of actual power adjusted value is direct indicating mode according to high-level signaling, actual power adjusted value f ad(i) concrete numerical value is " 4 "; If configuration determines that the obtain manner of actual power adjusted value is bulk billing system according to high-level signaling, actual power adjusted value f ad(i) concrete numerical value is " (1)+0+1+4=4 ".
405, subscriber equipment A calculates the transmitted power of SRS according to the one group of power contorl parameters that gets in the actual power adjusted value that obtains in step 404 and step 402, and is as follows:
P SRS(i)=min{P CMAX(i),P SRS_OFFSET+10log 10(M SRS)+P O_PUSCH(j)+α(j)·PL+f ad(i)}；
Wherein, P SRS(i) transmitted power of expression SRS, P CMAX(i) be the maximum transmission power of subscriber equipment, P SRS_OFFSET, P O_PUSCH(j) and α (j) be the parameter of high-rise configuration, M SRSBe the bandwidth of SRS, PL is the path loss information that measures by subscriber equipment.
406, the transmitted power of the SRS that obtains according to step 405 sends SRS to the destination service base station, such as, if the destination service base station is macro base station B, the transmitted power of the SRS that obtains according to step 406 sends SRS to macro base station B.
It should be noted that, in the present embodiment, be mainly to select power contorl parameters as example describes take subscriber equipment according to the destination service base station, should be understood that, also can should select which group power contorl parameters by the direct indication in base station, do not repeat them here.In addition, in the present embodiment, only to come the delivering power adjustment information to describe as example by DCI, should be understood that, can also carry out the delivering power adjustment information by the MAC signaling, the method of wherein, by the MAC signaling, carrying the power adjustment information specifically can, referring to embodiment two, not repeat them here.
as from the foregoing, the macro base station B of the embodiment of the present invention can send the power adjustment information of two power adjustment that comprise subscriber equipment A to subscriber equipment A by the DCI signaling, determine the destination service base station by subscriber equipment A, obtain one group of corresponding power contorl parameters in preset multiple power control parameter according to the destination service base station, then macro base station B comes equipment for indicating user to select the current power adjusted value by carry indication information in high-level signaling, and then definite actual power adjusted value, calculate finally the transmitted power of SRS according to actual power adjusted value and the one group of power contorl parameters that gets.Because this scheme can be for different destination service base stations, adopt different power contorl parameters and actual power adjusted value to calculate the transmitted power of SRS, so with respect to prior art, can only calculate regularly the transmitted power of SRS for a serving BS, and can only send power adjustment for a power control flow process, the power control precision and the flexibility that greatly improve the SRS under heterogeneous network.
Embodiment six,
In order to implement better above method, the embodiment of the present invention also provides a kind of subscriber equipment, and as shown in Figure 5, this subscriber equipment comprises receiving element 501, parameter selection unit 502, adjusted value selected cell 503, determining unit 504 and adjustment unit 505; Receiving element 501, parameter selection unit 502, adjusted value selected cell 503, determining unit 504 and adjustment unit 505 can specifically be arranged in hardware processor;
Receiving element 501, be used for receiving the power adjustment information that network equipment sends.
Wherein, this power adjustment information specifically can comprise at least one power adjustment of subscriber equipment, in addition, can also comprise the information that other are relevant to the power adjustment.This power adjustment is specifically provided by network equipment such as base station.During concrete enforcement, can only carry the power adjustment that the destination service base station provides in the power adjustment information, also can carry the power adjustment that a plurality of serving BSs provide, and then by high-level signaling, configure to indicate to adopt which power adjustment, certainly, other mode can also be arranged, at this, be not construed as limiting.
Parameter selection unit 502, be used for selecting one group of power contorl parameters in preset multiple power control parameter;
Adjusted value selected cell 503, be used for based on the indication information from network equipment, obtains current power adjusted value corresponding to one group of power contorl parameters of selecting with parameter selection unit 502 in this at least one power adjustment;
Determining unit 504, be used for determining the actual power adjusted value based on the current power adjusted value that adjusted value selected cell 503 is determined;
Adjustment unit 505, the one group of power contorl parameters that is used for the actual power adjusted value of determining according to determining unit 504 and parameter selection unit 502 selections is adjusted the transmitted power of SRS.
Wherein, each group power contorl parameters namely means corresponding a kind of power control flow, can comprise that the maximum transmission power of subscriber equipment (is P in each group power contorl parameters CMAX(i)), the parameter of high-rise configuration is (such as P SRS_OFFSET, P O_PUSCH(j) and α (j)), the bandwidth of SRS (is M SRS) and the path loss information (pathloss) that measures by subscriber equipment.
Wherein, specifically can select according to preset strategy when selecting power contorl parameters, this preset strategy can arrange according to the demand of practical application, such as being selected according to the destination service base station by subscriber equipment, perhaps, also can select according to the indication of network equipment side, etc., see the embodiment of the method for front for details, do not repeat them here.
Optionally, determining unit 504 when definite actual power adjusted value, if do not specify the obtain manner of actual power adjusted value, directly with the current power adjusted value as actual power adjusted value, i.e. f ad(i)=δ (i-K), wherein, f ad(i) expression actual power adjusted value, δ (i-K) expression current power adjusted value.Otherwise, if specified the obtain manner of actual power adjusted value, such as the obtain manner of indicating the actual power adjusted value is direct indicating mode, or the obtain manner of indicating this actual power adjusted value is accumulation mode etc., at this moment, also need first to know the obtain manner of actual power adjusted value, for example, be specifically as follows following any one or various ways:
(1) first kind of way:
Receiving element 501, also be used for knowing that by the indication of high-level signaling the obtain manner of this actual power adjusted value is direct indicating mode;
This moment, determining unit 504, specifically be used for the current power adjusted value is defined as actual power adjusted value, i.e. f ad(i)=δ (i-K), wherein, f ad(i) expression actual power adjusted value, δ (i-K) expression current power adjusted value.
(2) second way:
Receiving element 501, also be used for knowing that by the indication of high-level signaling the obtain manner of described actual power adjusted value is the accumulation mode;
This moment, determining unit 504, concrete be used for the actual power adjusted value of last time and this current power adjustment and as actual power adjusted value, i.e. f ad(i)=f ad(i-1)+δ (i-K), wherein, f ad(i) expression actual power adjusted value, δ (i-K) expression current power adjusted value, f ad(i-1) the last actual power adjusted value of expression.
In addition, subscriber equipment before sending SRS, also may receive a plurality of power adjustment for it, can also adopt this moment the 3rd or the 4th kind of mode obtain the actual power adjusted value.As follows:
(3) the third mode:
Receiving element 501, also be used for knowing that by the indication of high-level signaling the obtain manner of described actual power adjusted value is direct indicating mode;
This moment, determining unit 504, concrete being used for has when a plurality of at the current power adjusted value that obtains, and one that selects to receive finally in a plurality of current power adjusted values as the actual power adjusted value.
(4) the 4th kinds of modes:
Receiving element 501, also be used for knowing that by the indication of high-level signaling the obtain manner of described actual power adjusted value is the accumulation mode;
This moment, determining unit 504, concrete being used for has when a plurality of at the current power adjusted value that obtains, with a plurality of current power adjusted values and as the actual power adjusted value.
The method of above several definite actual power adjusted values specifically can, referring to the embodiment of the method for front, not repeat them here.
In addition, while specifically implementing, the power adjustment information can be transmitted by the MAC signaling, perhaps, also can adopt DCI to transmit on PDCCH, that is:
Receiving element 501, the concrete power adjustment information of reception network equipment by the transmission of MAC signaling that be used for; Perhaps,
Receiving element 501, specifically be used for receiving the power adjustment information that network equipment transmits by DCI.For example, specifically can be as follows:
Receiving element 501, the concrete first time DCI that is used for receiving the network equipment transmission, wherein, a DCI comprises an information bit that is used for the delivering power adjustment information, this information bit is divided at least two sub-information bits, and each sub-information bit is carried a power adjustment; Perhaps,
Receiving element 501, concrete be used for receiving the 2nd DCI that network equipment sends, wherein, the 2nd DCI comprise at least two information bits that are used for the delivering power adjustment information, each information bit is carried a power adjustment; Perhaps,
Receiving element 501, concrete the 3rd DCI that is used for receiving the network equipment transmission, wherein, the 3rd DCI comprises an information bit that is used for the delivering power adjustment information, described information bit is carried a power adjustment.
In addition, except carrying the information bit for the delivering power adjustment information, can also carry indication information in this DCI, wherein, this indication information is indicated by SRS trigger message position, that is:
Adjusted value selected cell 503, the concrete indication information that is used for based on DCI, obtain current power adjusted value corresponding to one group of power contorl parameters of selecting with parameter selection unit 502 at least one power adjustment.
Optionally, indication information except can indicating by SRS trigger message position, can also be indicated by PC-RNTI, that is:
If also implicitly in DCI comprised described indication information, and this DCI adopts PC-RNTI to carry out scrambling, and this indication information can be indicated by PC-RNTI, and this moment, this subscriber equipment can also comprise the descrambling unit;
The descrambling unit, be used for determining current PC-RNTI by this DCI being carried out descrambling, to determine the described indication information of the PC-RNTI indication that this is current;
This moment, adjusted value selected cell 503, specifically be used for the indication information of determining according to the descrambling unit, obtains current power adjusted value corresponding to one group of power contorl parameters of selecting with parameter selection unit 502 in this at least one power adjustment.
Certainly,, except by DCI, carrying indication information, can also obtain by other means indication information, such as, configure by high-level signaling, that is:
Receiving element 501, also be used for receiving the high-level signaling that network equipment sends, and wherein, this high-level signaling carries described indication information.
In addition,, in order to improve efficiency of transmission, can carry the power adjustment information for a plurality of subscriber equipmenies in DCI, then by high-level signaling, configure and inform that its corresponding power adjustment information of subscriber equipment specifically gets final product which position in DCI.That is, if the power adjustment information has comprised other at least one power adjustment of other subscriber equipmenies:
Receiving element 501, also be used for to receive the high-level signaling of the corresponding relation that carries described at least one power adjustment and subscriber equipment that network equipment sends;
This moment, adjusted value selected cell 503, also be used for the corresponding relation based on described at least one power adjustment and subscriber equipment, is that described subscriber equipment extracts described at least one power adjustment in the power adjustment information.
This subscriber equipment is specifically as follows the equipment such as mobile phone, panel computer or notebook computer.Network equipment is specifically as follows base station (comprising evolution base station), such as the macro base station of service or little base station of service etc., if there are a plurality of serving BSs in subscriber equipment, this network equipment is specifically as follows any one base station in these a plurality of serving BSs, such as generally being descending serving BS, wherein, the information that other serving BSs provide such as power adjustment etc., can send by the communication between base station this serving BS (being network equipment) to, by this serving BS (being network equipment), send subscriber equipment to.
It should be noted that, while specifically implementing, above unit can be used as independently entity and realizes, also can carry out combination in any, realize as same or several entities, the enforcement of above unit specifically can, referring to the embodiment of the method for front, not repeat them here.
as from the foregoing, the receiving element 501 of the subscriber equipment of the embodiment of the present invention can receive the power adjustment information of at least one power adjustment that comprises subscriber equipment of network equipment transmission, selected one group of power contorl parameters in preset multiple power control parameter by parameter selection unit 502, then by adjusted value selected cell 503 based on the indication information from network equipment, obtain the current power adjusted value corresponding with one group of power contorl parameters of described selection in described at least one power adjustment, and by determining unit 504, based on the current power adjusted value, determine the actual power adjusted value, adjusted finally the transmitted power of SRS according to one group of power contorl parameters of actual power adjusted value and selection by adjustment unit 505.because this scheme can be according to different preset strategies, such as the destination service base station for different, perhaps for control algolithm different in serving BS etc., select different power contorl parameters, and by indication information, come equipment for indicating user to select corresponding power adjustment to adjust the transmitted power of SRS in many group power adjustment, so with respect to prior art, can only calculate regularly the transmitted power of SRS for a serving BS, and can only send power adjustment for a power control flow process, greatly improve at the multipoint service technical network, especially power control precision and the flexibility of the SRS under heterogeneous network.
Embodiment seven,
Accordingly, the embodiment of the present invention also provides a kind of network equipment, and as shown in Figure 6, this network equipment comprises determining unit 601 and transmitting element 602; Determining unit 601 and transmitting element 602 can specifically be arranged in hardware processor;
Determining unit 601, be used for determining the corresponding current power adjusted value of one group of power contorl parameters selecting with subscriber equipment at least one power adjustment of subscriber equipment;
Wherein, " one group of power contorl parameters that subscriber equipment is selected " selected in preset multiple power control parameter by subscriber equipment; Current power adjusted value and this " power contorl parameters of a group selection " are used for the transmitted power of the measuring reference signals of subscriber equipment is adjusted; Specifically can, referring to front embodiment, not repeat them here.
Transmitting element 602, be used for providing the power that comprises at least one power adjustment adjustment information to subscriber equipment, and be used for the indication information at least one power adjustment indication current power adjusted value.
For example, specifically can be by the MAC signaling to subscriber equipment transmitted power adjustment information; Perhaps, also can be by DCI to subscriber equipment transmitted power adjustment information, that is:
Transmitting element 601, concrete being used for by the MAC signaling to subscriber equipment transmitted power adjustment information; Perhaps,
Transmitting element 602, concrete being used for by descending control signaling to subscriber equipment transmitted power adjustment information.
Wherein, indication information can offer subscriber equipment in several ways, such as by high-rise control signal, configuring to offer subscriber equipment etc., perhaps,, if by DCI, carry out the through-put power adjustment information, can also send this indication information to subscriber equipment by DCI this moment.For example, specifically can adopt any one following mode to obtain indication information:
(1) indicate by the SRS trigger message position in DCI,, referring to embodiment one, do not repeat them here.
(2) indicate by PC-RNTI;
This moment, this network equipment, can also comprise scrambling unit;
Scrambling unit, be used for by DCI to before subscriber equipment transmitted power adjustment information, adopt PC-RNTI to carry out scrambling to this DCI, so that subscriber equipment is determined current PC-RNTI by this DCI being carried out descrambling, and then the described indication information of definite this current PC-RNTI indication,, referring to embodiment one, do not repeat them here.
(3) configure to indicate by high-level signaling;
This moment, transmitting element 601, also be used for sending to this subscriber equipment the high-level signaling that carries described indication information.
In addition,, in order to improve efficiency of transmission, can carry the power adjustment information for a plurality of subscriber equipmenies in DCI, then by high-level signaling, configure and inform that its corresponding power adjustment information of subscriber equipment specifically gets final product which position in DCI.Even the power adjustment information also comprises other at least one power adjustment of other subscriber equipmenies:
Transmitting element 601, also be used for before the power adjustment information that comprises at least one power adjustment is provided to subscriber equipment, the high-level signaling of the corresponding relation that carries described at least one power adjustment and subscriber equipment is provided to subscriber equipment, so that, according to the corresponding relation based on described at least one power adjustment and subscriber equipment, being described subscriber equipment in the power adjustment information, subscriber equipment extracts described at least one power adjustment.
This network equipment is specifically as follows base station (comprising evolution base station), such as the macro base station of service or little base station of service etc.
It should be noted that, while specifically implementing, above unit can be used as independently entity and realizes, also can carry out combination in any, realize as same or several entities, the enforcement of above unit specifically can, referring to the embodiment of the method for front, not repeat them here.
as from the foregoing, the determining unit 601 of the network equipment of the present embodiment can be determined the corresponding current power adjusted value of one group of power contorl parameters selecting with subscriber equipment at least one power adjustment of subscriber equipment, then provide the power that comprises this at least one power adjustment adjustment information by transmitting element 601 to subscriber equipment, and the indication information that is used for indicating at least one power adjustment the current power adjusted value, so that subscriber equipment can select corresponding power adjustment to adjust the transmitted power of SRS for different power contorl parameters in many group power adjustment, greatly improve at the multipoint service technical network, especially power control precision and the flexibility of the SRS under heterogeneous network.
In base station and subscriber equipment in embodiment seven and embodiment eight, the concrete function section that carries out in each unit, referring to the description of method flow before, does not repeat herein.
Embodiment eight,
Accordingly, the embodiment of the present invention also provides a kind of communication system, comprises any subscriber equipment that the embodiment of the present invention provides, and wherein, the explanation of this subscriber equipment specifically can be referring to embodiment six, for example, and specifically can be as follows:
Subscriber equipment, be used for receiving the power adjustment information that network equipment sends, and wherein, the power adjustment information comprises at least one power adjustment of subscriber equipment; Select one group of power contorl parameters in preset multiple power control parameter; , based on the indication information from network equipment, obtain the current power adjusted value corresponding with one group of power contorl parameters of described selection in described at least one power adjustment; Determine the actual power adjusted value based on the current power adjusted value; Adjust the transmitted power of SRS according to one group of power contorl parameters of this actual power adjusted value and selection.
Wherein, based on the current power adjusted value, determine that the actual power adjusted value can have several different methods, specifically can, referring to the embodiment of the method for front, not repeat them here.
In addition, the transmission of power adjustment information also can be in several ways, such as, can adopt the MAC signaling to transmit, perhaps, also can adopt DCI to transmit on PDCCH, etc., that is:
Subscriber equipment, the concrete power adjustment information of reception network equipment by the transmission of MAC signaling that be used for; Perhaps,
Subscriber equipment, concrete being used for receives the power adjustment information that network equipment transmits by DCI, specifically can, referring to front embodiment, not repeat them here.
In addition, this communication system can also comprise any network equipment that the embodiment of the present invention provides, specifically can be referring to embodiment seven, for example, specifically can be as follows:
Network equipment, be used for determining the corresponding current power adjusted value of one group of power contorl parameters selecting with subscriber equipment at least one power adjustment of subscriber equipment, wherein, one group of power contorl parameters of described subscriber equipment selection is selected in preset multiple power control parameter by subscriber equipment; The power contorl parameters of described current power adjusted value and a described group selection is used for the transmitted power of the measuring reference signals of subscriber equipment is adjusted; Provide the power that comprises at least one power adjustment adjustment information to subscriber equipment, and be used for the indication information at least one power adjustment indication current power adjusted value, see the embodiment of front for details, do not repeat them here.
as from the foregoing, subscriber equipment in the communication system of the embodiment of the present invention can receive the power adjustment information of at least one power adjustment that comprises subscriber equipment of network equipment transmission, select one group of power contorl parameters in preset multiple power control parameter, then based on the indication information from network equipment, obtain the current power adjusted value corresponding with one group of power contorl parameters of described selection in described at least one power adjustment, and based on the current power adjusted value, determine the actual power adjusted value, adjust finally the transmitted power of SRS according to one group of power contorl parameters of actual power adjusted value and selection.because this scheme can be according to different preset strategies, such as the destination service base station for different, perhaps for control algolithm different in serving BS etc., select different power contorl parameters, and by indication information, come equipment for indicating user to select corresponding power adjustment to adjust the transmitted power of SRS in many group power adjustment, so with respect to prior art, can only calculate regularly the transmitted power of SRS for a serving BS, and can only send power adjustment for a power control flow process, greatly improve at the multipoint service technical network, especially power control precision and the flexibility of the SRS under heterogeneous network.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the relevant hardware of instruction complete by program, this program can be stored in a computer-readable recording medium, storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
Poewr control method, device and the system of above a kind of SRS that the embodiment of the present invention is provided are described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously,, for those skilled in the art,, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (31)

1. the Poewr control method of a measuring reference signals, is characterized in that, comprising:
Receive the power adjustment information that network equipment sends, described power adjustment information comprises at least one power adjustment of subscriber equipment;
Select one group of power contorl parameters in preset multiple power control parameter;
, based on the indication information from network equipment, obtain the current power adjusted value corresponding with described one group of power contorl parameters in described at least one power adjustment;
Determine the actual power adjusted value based on the current power adjusted value;
Transmitted power according to described actual power adjusted value and described one group of power contorl parameters adjustment measuring reference signals.
2. method according to claim 1, is characterized in that, before the power adjustment information that described reception network equipment sends, also comprises:
Know that by the indication of the high-level signaling from network equipment the obtain manner of described actual power adjusted value is direct indicating mode;
Describedly based on the current power adjusted value, determine that the actual power adjusted value comprises: based on direct indicating mode, described current power adjusted value is defined as the actual power adjusted value.
3. method according to claim 1, is characterized in that, before the power adjustment information that receives the network equipment transmission, also comprises:
Know that by the indication of the high-level signaling from network equipment the obtain manner of described actual power adjusted value is the accumulation mode;
Describedly based on the current power adjusted value, determine that the actual power adjusted value comprises: based on the accumulation mode with the actual power adjusted value of last time and described current power adjusted value and as the actual power adjusted value.
4. the described method of according to claim 1 to 3 any one, is characterized in that, the power adjustment information that described reception network equipment sends comprises:
Receive the power adjustment information that network equipment transmits by media Access Layer signaling; Perhaps,
Receive the power adjustment information that network equipment transmits by descending control signaling.
5. method according to claim 4, is characterized in that,
Also comprise described indication information in described descending control signaling, described indication information is indicated by measuring reference signals trigger message position.
6. method according to claim 4, is characterized in that,
Described descending control signaling adopts wireless network temporary identity sign to carry out scrambling, and described indication information identifies to indicate by described wireless network temporary identity;
Described based on the indication information from network equipment, comprised obtain the current power adjusted value corresponding with described one group of power contorl parameters in described at least one power adjustment before: by described descending control signaling descrambling being determined described wireless network temporary identity sign, to determine the described indication information of described wireless network temporary identity sign indication.
7. the described method of any one according to claim 1 to 4, is characterized in that, before the power adjustment information that described reception network equipment sends, also comprises:
Receive the high-level signaling that carries described indication information that network equipment sends.
8. the described method of any one according to claim 1 to 7, is characterized in that, described power adjustment information also comprises other at least one power adjustment of other subscriber equipment:
Before the power adjustment information that described reception network equipment sends, also comprise: the high-level signaling that receives the corresponding relation that carries described at least one power adjustment and subscriber equipment of network equipment transmission;
Described based on the indication information from network equipment, obtain the current power adjusted value corresponding with described one group of power contorl parameters in described at least one power adjustment before, also comprise:, based on the corresponding relation of described at least one power adjustment and subscriber equipment, be that described subscriber equipment extracts described at least one power adjustment in the power adjustment information.
9. the described method of any one according to claim 1 to 8, is characterized in that, described transmitted power according to described actual power adjusted value and described one group of power contorl parameters adjustment measuring reference signals comprises:
Calculate the transmitted power of described measuring reference signals based on following formula:
P SRS(i)=min{P CMAX(i),P SRS_OFFSET+10log 10(M SRS)+P O_PUSCH(j)+α(j)·PL+f(i)}；
P wherein SRS(i) be the transmitted power of described measuring reference signals, P CMAX(i) be the maximum transmission power of subscriber equipment, P SRS_OFFSET, P O_PUSCH(j) and α (j) be described one group of power contorl parameters, M SRSBe the bandwidth of measuring reference signals, PL is the information on path loss that subscriber equipment measures, and f (i) is described actual power adjusted value.
10. the Poewr control method of a measuring reference signals, is characterized in that, comprising:
Determine the corresponding current power adjusted value of one group of power contorl parameters of selecting with subscriber equipment at least one power adjustment of subscriber equipment, described one group of power contorl parameters is selected in preset multiple power control parameter by subscriber equipment; Described current power adjusted value and described one group of power contorl parameters are used for the transmitted power of the measuring reference signals of subscriber equipment is adjusted;
Provide the power that comprises at least one power adjustment adjustment information to subscriber equipment, and be used for the indication information at least one power adjustment indication current power adjusted value.
11. method according to claim 10, is characterized in that, describedly to subscriber equipment, provides the power that comprises at least one power adjustment adjustment information, comprising:
By media Access Layer signaling to subscriber equipment transmitted power adjustment information; Perhaps,
By descending control signaling to subscriber equipment transmitted power adjustment information.
12. method according to claim 11, is characterized in that,
Also comprise described indication information in described descending control signaling, described indication information is indicated by measuring reference signals trigger message position.
13. method according to claim 11, is characterized in that, described indication information identifies to indicate by the wireless network temporary identity, described by descending control signaling to before subscriber equipment transmitted power adjustment information, also comprise:
Adopt described wireless network temporary identity sign to carry out scrambling to described descending control signaling, to be identified at the described current power adjusted value of indication at least one power adjustment by described wireless network temporary identity.
14. according to claim 10 or 11 described methods, is characterized in that, to subscriber equipment, provides the power that comprises at least one power adjustment adjustment information, and be used for comprising at the indication information of at least one power adjustment indication current power adjusted value:
Send the high-level signaling that carries described indication information to described subscriber equipment;
Provide the power that comprises at least one power adjustment adjustment information to subscriber equipment.
15. according to claim 10 to the 14 described methods of any one, it is characterized in that, described power adjustment information also comprises other at least one power adjustment of other subscriber equipmenies, described provide to subscriber equipment the power adjustment information that comprises at least one power adjustment before, also comprise:
The high-level signaling of the corresponding relation that carries described at least one power adjustment and subscriber equipment is provided to subscriber equipment, and it is described at least one power adjustment of described subscriber equipment indication that described corresponding relation is used in described power adjustment information.
16. a subscriber equipment, is characterized in that, comprising:
Receiving element, be used for receiving the power adjustment information that network equipment sends, and described power adjustment information comprises at least one power adjustment of subscriber equipment;
Parameter selection unit, be used for selecting one group of power contorl parameters in preset multiple power control parameter;
The adjusted value selected cell, be used for based on the indication information from network equipment, obtains the current power adjusted value corresponding with described one group of power contorl parameters in described at least one power adjustment;
Determining unit, be used for determining the actual power adjusted value based on the current power adjusted value;
Adjustment unit, be used for the transmitted power according to described actual power adjusted value and described one group of power contorl parameters adjustment measuring reference signals.
17. subscriber equipment according to claim 16, is characterized in that,
Described receiving element, also be used for knowing that by the indication of the high-level signaling from network equipment the obtain manner of described actual power adjusted value is direct indicating mode;
Described determining unit, concrete for based on direct indicating mode, described current power adjusted value being defined as the actual power adjusted value.
18. subscriber equipment according to claim 17, is characterized in that,
Described receiving element, also be used for knowing that from the indication of passing through high-level signaling of network equipment the obtain manner of described actual power adjusted value is the accumulation mode;
Described determining unit, concrete be used for based on the accumulation mode with the actual power adjusted value of last time and described current power adjusted value and as the actual power adjusted value.
19., according to claim 16 to the 18 described subscriber equipmenies of any one, it is characterized in that,
Described receiving element, the concrete power adjustment information of reception network equipment by the transmission of media Access Layer signaling that be used for; Perhaps,
Described receiving element, specifically be used for receiving the power adjustment information that network equipment transmits by descending control signaling.
20. subscriber equipment according to claim 19, is characterized in that, also comprises described indication information in described descending control signaling, described indication information is indicated by measuring reference signals trigger message position:
Described adjusted value selected cell, the concrete indication information that is used for based on descending control signaling, obtain the current power adjusted value corresponding with described one group of power contorl parameters in described at least one power adjustment.
21. subscriber equipment according to claim 19, is characterized in that, described descending control signaling adopts wireless network temporary identity sign to carry out scrambling, and described indication information identifies to indicate by described wireless network temporary identity, also comprises the descrambling unit;
Described descrambling unit, be used for by described descending control signaling descrambling being determined described wireless network temporary identity sign, to determine the described indication information of described wireless network temporary identity sign indication;
Described adjusted value selected cell, the concrete indication information of determining according to the descrambling unit that is used for, obtain the current power adjusted value corresponding with described one group of power contorl parameters in described at least one power adjustment.
22., according to claim 16 to the 19 described subscriber equipmenies of any one, it is characterized in that,
Described receiving element, also be used for receiving the high-level signaling that carries described indication information that network equipment sends.
23., according to claim 16 to the 22 described subscriber equipmenies of any one, it is characterized in that, described power adjustment information also comprises other at least one power adjustment of other subscriber equipmenies:
Described receiving element, also be used for to receive the high-level signaling of the corresponding relation that carries described at least one power adjustment and subscriber equipment that network equipment sends;
Described adjusted value selected cell, also be used for the corresponding relation based on described at least one power adjustment and subscriber equipment, is that described subscriber equipment extracts described at least one power adjustment in the power adjustment information.
24., according to claim 16 to the described method of any one in 23, it is characterized in that, described adjustment unit specifically is used for calculating based on following formula the transmitted power of described measuring reference signals:
P SRS(i)=min{P CMAX(i),P SRS_OFFSET+10log 10(M SRS)+P O_PUSCH(j)+α(j)·PL+f(i)}；
P wherein SRS(i) be the transmitted power of described measuring reference signals, P CMAX(i) be the maximum transmission power of subscriber equipment, P SRS_PFFSET, P O_PUSCH(j) and α (j) be described one group of power contorl parameters, M SRSBe the bandwidth of measuring reference signals, PL is the information on path loss that subscriber equipment measures, and f (i) is described actual power adjusted value.
25. a network equipment, is characterized in that, comprising:
Determining unit, be used for determining the corresponding current power adjusted value of one group of power contorl parameters selecting with subscriber equipment at least one power adjustment of subscriber equipment, described one group of power contorl parameters is selected in preset multiple power control parameter by subscriber equipment; Described current power adjusted value and described one group of power contorl parameters are used for the transmitted power of the measuring reference signals of subscriber equipment is adjusted;
Transmitting element, be used for providing the power that comprises at least one power adjustment adjustment information to subscriber equipment, and be used for the indication information at least one power adjustment indication current power adjusted value.
26. network equipment according to claim 25, is characterized in that,
Described transmitting element, concrete being used for by media Access Layer signaling to subscriber equipment transmitted power adjustment information; Perhaps,
Described transmitting element, concrete being used for by descending control signaling to subscriber equipment transmitted power adjustment information.
27. network equipment according to claim 26, is characterized in that,
Also comprise described indication information in described descending control signaling, described indication information is indicated by measuring reference signals trigger message position.
28. network equipment according to claim 26, is characterized in that, described indication information identifies to indicate by the wireless network temporary identity, also comprises scrambling unit;
Scrambling unit, be used for by descending control signaling to before subscriber equipment transmitted power adjustment information, adopt described wireless network temporary identity sign to carry out scrambling to described descending control signaling, to be identified at the described current power adjusted value of indication at least one power adjustment by described wireless network temporary identity.
29. according to claim 25 or 26 described network equipments, is characterized in that,
Described transmitting element, also be used for sending to described subscriber equipment the high-level signaling that carries described indication information.
30. the described network equipment of according to claim 25 to 29 any one, is characterized in that, described power adjustment information also comprises other at least one power adjustment of other subscriber equipmenies:
Described transmitting element, also be used for before the power adjustment information that comprises at least one power adjustment is provided to subscriber equipment, the high-level signaling of the corresponding relation that carries described at least one power adjustment and subscriber equipment is provided to subscriber equipment, and it is described at least one power adjustment of described subscriber equipment indication that described corresponding relation is used in described power adjustment information.
31. a communication system, is characterized in that, comprises described any subscriber equipment of claim 16 to 24 and described any network equipment of claim 25 to 30.
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