CN102076072B - Uplink power control method, user equipment (UE) and carrier aggregation (CA) system - Google Patents

Abstract

The invention discloses an uplink power control method, user equipment (UE) and a carrier aggregation (CA) system. The method comprises the following steps: the UE receives open loop power control parameters of component carrier (CC) from a base station, acquires path loss values for each CC of the UE and the base station, determines initial transmitting power for each CC of the UE in accordance with the open loop power control parameters and the path loss values; if the initial transmitting power is required to adjust, the UE sets power allocation priority coefficients sent to the base station among all types of channels; the UE sets power allocation priority coefficients sent to the base station inside a plurality of Bs; and the transmitting power for the CCs of the UE is determined in accordance with the initial transmitting power, the power allocation priority coefficients among all types of channels and the power allocation priority coefficients insides the plurality of Bs. According to the invention, the UE in the CA system is subjected to effective power control, the complexity of the UE is reduced, and the reliability for controlling information by the UE, the performancesof data channels and the overall performances of the system are optimized.

Description

Ascending power control method, subscriber equipment and carrier aggregation system

Technical field

The present invention relates to wireless communication field, relate in particular to a kind of ascending power control method, subscriber equipment and comprise the carrier aggregation system of this subscriber equipment.

Background technology

In the up link of wireless communication system, UE(User Equipment, subscriber equipment) transmitting power directly affect the important indicators such as spectrum efficiency of cell-edge performance and system.At UMTS(Universal Mobile Telecommunications System, universal mobile telecommunications system) LTE(Long Term Evolution, Long Term Evolution) in the system, uplink transmission power is by the path loss (Path Loss) of Radio Link, the path loss penalty coefficient, receiving terminal target SINR(Signal to Interference and Noise Ratio, Signal Interference and Noise Ratio) etc. factor determines, the base station also can dynamically be adjusted the transmitting power of UE, simultaneously at the various physical channels of time domain orthogonal: PUCCH(Physical Uplink Control Channel, Physical Uplink Control Channel), PUSCH w/o UCI(Physical Uplink Shared Channel with/without Uplink Control Information be with/does not have the Physical Uplink Shared Channel of ascending control information) power control process be independently.

In the LTE-Advanced system, in order to improve performances such as system's up-downgoing transmission rate, CA(Carrier Aggregation, carrier aggregation) the transmission technology brought in the framework of LTE-Advanced by the 3rd generation partner program (3GPP).In LTE-Advanced CA scene, CC(Component Carrier, the carrier wave unit) specific uplink power control scheme directly affects the performance of CA UE and entire system, and a plurality of LTE system is transmitted simultaneously in the CA system, and each LTE system can regard a CC as.Therefore, in the CA scene, formulate the scheme of uplink power control efficiently that a cover is applicable to multicarrier system, become exigence.

Summary of the invention

(1) technical problem that will solve

The technical problem to be solved in the present invention is: how the subscriber equipment in the CA system is carried out effective power control, reduce the complexity of subscriber equipment, optimize reliability, the performance of data channel and the entire system performance of subscriber equipment control information.

(2) technical scheme

For solving the problems of the technologies described above, the invention provides a kind of ascending power control method, the scene that a plurality of data channels that have power limited under the carrier aggregation are transmitted simultaneously is divided into two kinds: a Physical Uplink Shared Channel A who has ascending control information, and a plurality of Physical Uplink Shared Channel B that does not have ascending control information provides service for a user equipment (UE) simultaneously; Only a plurality of B among a plurality of carrier wave unit CC are simultaneously for a UE provides service, and based on above two kinds of scenes, this method may further comprise the steps:

S1, UE receive the open Loop Power control parameter of the CC that sends the base station;

S2, UE obtain the path loss values of its each CC and base station;

S3, UE determine the Initial Trans of each CC of UE according to described open Loop Power control parameter and path loss values;

S4, if judge to need adjust described Initial Trans, the power division priority factor of all kinds of interchannels that utilize when then UE sets and sends data to the base station;

S5, UE set the power division priority factor of a plurality of B inside that sends to the base station;

S6, UE determine the transmitting power of the CC of UE according to the power division priority factor of the power division priority factor of described Initial Trans, described all kinds of interchannels and a plurality of B inside.

Wherein, described open Loop Power control parameter comprises the parameter of the interference level of path loss penalty coefficient and the described base station of embodiment.

Wherein, step S2 is specially:

UE carries out Reference Signal Received Power RSRP to each CC and measures, to obtain described path loss values; Perhaps

UE carries out RSRP to main CC and measures, to obtain the path loss values of main CC; And obtain the path loss deviant of time CC, the path loss deviant that the path loss values of main CC is added CC last time obtains the path loss values of time CC.

Wherein, step S4 is specially: it is limit priority that UE sets the A that sends to the base station, and sets the priority of the B that sends to the base station.

Wherein, step S5 is specially:

The priority that UE sets each B is identical; Perhaps

UE sets the priority of each B according to described Initial Trans; Perhaps

The priority of each B is set in the instruction that UE sends according to the base station.

Wherein, between step S3 and S4, also comprise step:

S301, UE receive the closed power control command of base station emission;

S302, UE adjust the Initial Trans of each CC of UE according to described closed power control command.

Wherein, among the step S4, judge whether that according to the Initial Trans sum of all CC needs adjust described Initial Trans.

The present invention also provides a kind of subscriber equipment, the scene that a plurality of data channels that have power limited under the carrier aggregation are transmitted simultaneously is divided into two kinds: a Physical Uplink Shared Channel A who has ascending control information, and a plurality of Physical Uplink Shared Channel B that does not have ascending control information provides service for a user equipment (UE) simultaneously; Only a plurality of B among a plurality of carrier wave unit CC are simultaneously for a UE provides service, and described subscriber equipment is used for carrying out uplink power control based on above two kinds of scenes, comprising:

Receiving system is for the open Loop Power control parameter that receives the CC that sends the base station;

The path loss deriving means is used for obtaining the path loss values between each CC and base station;

Initial Trans is determined device, is used for determining according to described open Loop Power control parameter and path loss values the Initial Trans of the CC of UE;

Interchannel power division priority factor deriving means, the power division priority factor of all kinds of interchannels that utilize when being used for setting to base station transmission data;

The channel internal power distributes the priority factor deriving means, is used for setting the power division priority factor of a plurality of B inside that sends to the base station;

Transmitting power is determined device, is used for determining according to the power division priority factor of the power division priority factor of described Initial Trans, described all kinds of interchannels and a plurality of B inside the transmitting power of the CC of UE.

Wherein, described equipment also comprises: the closed loop parameter adjustment controls, be used for receiving the closed power control command that launch the base station, and according to described closed power control command the transmitting power of the CC of UE is adjusted.

The present invention also provides a kind of carrier aggregation system, comprising: the base station is used for sending open Loop Power control parameter and closed power parameter; With above-mentioned subscriber equipment.

(3) beneficial effect

The subscriber equipment that the present invention is directed in the CA system has carried out effective power control, has reduced the complexity of subscriber equipment, has optimized reliability, the performance of data channel and the entire system performance of subscriber equipment control information.

Description of drawings

Fig. 1 is the schematic diagram of the carrier aggregation application scenarios of the embodiment of the invention;

Fig. 2 is the flow chart of Poewr control method of the present invention;

Fig. 3 is the flow chart of the Poewr control method of the embodiment of the invention one;

Fig. 4 is the flow chart of the Poewr control method of the embodiment of the invention two;

Fig. 5 is the flow chart of the Poewr control method of the embodiment of the invention three;

Fig. 6 is the structural representation of the subscriber equipment of the embodiment of the invention one;

Fig. 7 is the structural representation of the subscriber equipment of the embodiment of the invention two;

Fig. 8 is the structural representation of the carrier aggregation system of the embodiment of the invention.

Embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.

Fig. 1 is the schematic diagram according to the carrier aggregation application scenarios 100 of the embodiment of the invention.In application scenarios 100, comprise base station 104, UE102, and CC106,108,110.

The scene that the present invention is transmitted a plurality of data channels that have power limited under the carrier aggregation simultaneously is divided into two kinds: PUSCH w/o UCI, a plurality of PUSCH (the following PUSCH without UCI that all refers to).

As shown in Figure 2, based on above two kinds of scenes, this method may further comprise the steps:

S1, UE receive the open Loop Power control parameter of the CC that sends the base station;

S2, UE obtain the path loss values of its each CC and base station;

S3, UE determine the Initial Trans of each CC of UE according to described open Loop Power control parameter and path loss values;

S4, if judge to need adjust described Initial Trans, the power division priority factor of all kinds of interchannels that utilize when then UE sets and sends data to the base station;

S5, UE set the power division priority factor of a plurality of B inside that sends to the base station;

S6, UE determine the transmitting power of the CC of UE according to the power division priority factor of the power division priority factor of described Initial Trans, described all kinds of interchannels and a plurality of B inside.

Embodiments of the invention below are described.

In application scenarios 100, UE102 can send multiple channel, wherein UCI(ascending control information at a plurality of CC simultaneously) only at a UL(uplink, up) the last transmission of CC.As shown in Figure 1, transmitting three simultaneously with UE102 is example with being with continuous CC106,108 and 110, and wherein the CC106 transmission has the PUSCH of UCI, and CC108 and 110 only transmits PUSCH.

Below the parameter of alleged CC also can be described as the parameter of CC specific (CC-specific).

According to embodiments of the invention, in band continuous CA scene, the initial power control scheme of UE102 can be expressed as:

P _{CC_j}=min{P _{max_j},10logM _j+P _{0_j}+α _jPL _j+Δ _{MCS_j}+f(Δ _{i_j})},j=1,2,3（1）

Wherein, P _{CC_j}Be the Initial Trans of j CC of UE102, P _{Max_j}Be the maximum transmission power of this CC, M _jFor distributing to the up RB(resource block of j CC of this UE102, Resource Block) quantity; P _{0_j}Parameter (comprising target SINR, interference level etc.) for base station 104 or j CC of UE102; α _jBe the path loss penalty coefficient; PL _jPath loss for j CC of UE102; Δ _{MCS_j}Be by RRC(radio resource control, Radio Resource control) parameter layer appointment at certain specific MCS(modulation and coding scheme, Modulation and Coding Scheme); Δ _{I_j}It is the transmitting power closed loop correction factor of base station 104 and j CC of UE102.

Fig. 3 is the flow chart according to the Poewr control method 200 of the embodiment of the invention one.

In step 202, subscriber equipment receives the CC open Loop Power control parameter that send the base station.

In step 204, subscriber equipment obtains the path loss values of the CC between itself and base station by the RSRP measurement of CC.

In step 206, subscriber equipment is determined the Initial Trans of each CC of subscriber equipment according to path loss values and open Loop Power control parameter.

In step 208, the Initial Trans summation of three CC of subscriber equipment statistics, and judge whether this value surpasses the maximum transmission power P of this subscriber equipment _Max

In step 210, if step 208 is returned negative decision, the power that this subscriber equipment then is described does not have limited, and Initial Trans does not need to adjust.Otherwise this subscriber equipment carries out the power adjustment: the PUSCH priority factor β that subscriber equipment has UCI is set to 0, has guaranteed the reliability of UCI like this.And adjustment obtains power P as follows _{CC_j}(β):

$P_{\mathrm{CC}\_1}\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_1}-\frac{\underset{j=1}{\overset{3}{\mathrm{\Σ}}}{P}_{\mathrm{CC}\_j}-P_{\max }}{\underset{j=1}{\overset{3}{\mathrm{\Σ}}}{P}_{\mathrm{CC}\_j}}\×P_{\mathrm{CC}\_1}\×\mathrm{\β}---\left(2\right)$

$P_{\mathrm{CC}\_2}\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_2}-\frac{(P_{\mathrm{CC}\_2}+P_{\mathrm{CC}\_3})-(P_{\max }-P_{\mathrm{CC}\_1}\left(\mathrm{\β}\right))}{2}---\left(3\right)$

$P_{\mathrm{CC}\_3}\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_3}-\frac{(P_{\mathrm{CC}\_2}+P_{\mathrm{CC}\_3})-(P_{\max }-P_{\mathrm{CC}\_1}\left(\mathrm{\β}\right))}{2}---\left(4\right)$

P wherein _{CC_j}Initial Trans for j the CC of UE.P _{CC_j}(β) for to get under certain definite value situation at the PUSCH of UCI priority factor β, the power after j CC adjusts.P _MAXMaximum transmission power for UE.(P _{CC_2}+ P _{CC_3})-(P _Max-P _{CC_1}(β)) for carry out the power adjustment at the 1st CC after, the summation of the reduction that the power of the 2nd CC and the 3rd CC is required, the part that namely surpasses.From formula (3), (4) are the 2nd amount that CC is identical with the power extraction of the 3rd CC as can be seen.

In step 212, subscriber equipment judges that whether power after the adjustment of each CC is all more than or equal to 0.

In step 214, if step 212 is returned positive result, then the power after the adjustment that can draw according to step 210 of this subscriber equipment sends.Otherwise this subscriber equipment cuts out and adjusts back power less than 0 PUSCH channel.And reenter step 210, all more than or equal to zero, and summation is no more than the maximum transmit power value of this subscriber equipment up to the power of all CC.

Fig. 4 is the flow chart according to the Poewr control method 300 of the embodiment of the invention two.The description of Fig. 3 combines the application scenarios 100 of Fig. 1.

In step 302, subscriber equipment receives the open Loop Power control parameter that send the base station.Such as, UE102 can receive the specific open Loop Power control parameter of CC that base station 104 sends.The open Loop Power control parameter comprises path loss penalty coefficient α _j, parameter (can characterize with the target SINR of the receiving terminal) P of embodiment base station 104 interference levels _{0_j}, and the path loss offset value delta that is only caused by the different frequency between PCC and all SCC _{PL_j}Such as, the CC106 that transmits control information herein is main CC, and as SCC and PCC during in identical frequency band, the path loss deviant of j CC is Δ _{PL_j}=0, and not when same frequency band, Δ _{PL_j}Non-vanishing.

In step 304, subscriber equipment carries out RSRP to main CC to be measured, and obtains this CC of subscriber equipment and the path loss values PL between the base station _{J_PCC}, utilize the specific Δ of SCC then _{PL_j}, obtain the PL of each SCC _j=PL _{J_PCC}+ Δ _{PL_j}

In step 306, subscriber equipment is determined the CC Initial Trans of subscriber equipment according to path loss values and open Loop Power control parameter.Such as, UE102 is according to the path loss values PL that obtains in step 304 _jWith the open Loop Power control parameter alpha that in step 302, obtains _jAnd P _{0_j}, can determine an initial value of the CC specified upstream transmitting power of UE102:

P _{CC_j}=min{P _{max_j},10logM _j+P _{0_j}+α _jPL _j+Δ _{MCS_j}},j=1,2,3

In step 308, subscriber equipment receives the closed power control command of base station emission.Such as, base station in service sector 106 can send the closed power control command according to real-time condition, is presented as f (Δ in power control _{I_j}).UE102 receives the closed power control command f (Δ of base station 106 emissions _{I_j}).

In step 310, subscriber equipment is adjusted the transmitting power of subscriber equipment according to the closed power control command.Such as, UE102 is according to the closed power control command that gets access to, with f (Δ _{I_j}) factor takes into account, to P _{CC_j}Adjust, thus the transmitting power of UE102 in the acquisition formula (1).

In step 312, the Initial Trans summation of three CC of subscriber equipment statistics, and judge whether this value surpasses the maximum transmission power P of this subscriber equipment _Max

In step 314, if step 312 is returned negative decision, then the power of this subscriber equipment does not have limitedly, and Initial Trans does not need to adjust.Otherwise this subscriber equipment carries out the power adjustment: the PUSCH priority factor β that subscriber equipment has UCI is set to 0, and adjustment obtains power P as follows _{CC_j}(β):

$P_{\mathrm{CC}\_1}(\mathrm{\β}=0)=P_{\mathrm{CC}\_1}-\frac{\underset{j=1}{\overset{3}{\mathrm{\Σ}}}{P}_{\mathrm{CC}\_j}-P_{\max }}{\underset{j=1}{\overset{3}{\mathrm{\Σ}}}{P}_{\mathrm{CC}\_j}}\×P_{\mathrm{CC}\_1}\×\mathrm{\β}---\left(5\right)$

$P_{\mathrm{CC}\_2}\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_2}-\frac{(P_{\mathrm{CC}\_2}+P_{\mathrm{CC}\_3})-(P_{\max }-P_{\mathrm{CC}\_1}(\mathrm{\β}=0))}{P_{\mathrm{CC}\_2}-{\mathrm{\α}}_2{\mathrm{\Δ}}_{\mathrm{PL}\_2}+P_{\mathrm{CC}\_3}-{\mathrm{\α}}_2{\mathrm{\Δ}}_{\mathrm{PL}\_3}}\×(P_{\mathrm{CC}\_3}-{\mathrm{\α}}_3{\mathrm{\Δ}}_{\mathrm{PL}\_3})---\left(6\right)$

$P_{\mathrm{CC}\_3}\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_3}-\frac{(P_{\mathrm{CC}\_2}+P_{\mathrm{CC}\_3})-(P_{\max }-P_{\mathrm{CC}\_1}(\mathrm{\β}=0))}{P_{\mathrm{CC}\_2}-{\mathrm{\α}}_2{\mathrm{\Δ}}_{\mathrm{PL}\_2}+P_{\mathrm{CC}\_3}-{\mathrm{\α}}_2{\mathrm{\Δ}}_{\mathrm{PL}\_3}}\×(P_{\mathrm{CC}\_2}-{\mathrm{\α}}_2{\mathrm{\Δ}}_{\mathrm{PL}\_2})---\left(7\right)$

α _jΔ _{PL_j}Represent the path loss power compensating value between j CC and the base station.Formula (6), (7) are to deduct path loss component with frequency dependence (as α according to Initial Trans ₃Δ _{PL_3}) after the power division amount cut down in proportion.

In step 316, subscriber equipment judges that whether power after the adjustment of each CC is less than 0.

In step 318, if step 316 is returned positive result, then the power after the adjustment that can draw according to step 314 of this subscriber equipment sends.Otherwise this subscriber equipment cuts out and adjusts back power less than 0 PUSCH channel.And reenter step 314, all more than or equal to zero, and summation is no more than the maximum transmit power value of this subscriber equipment up to the power of all CC.

Method 300 is defined as the path loss values of inferior CC the PCC(master CC of subscriber equipment) the path loss deviant sum of the path loss values of (and between base station) and time CC, reduced the number of times of PSRP, reduced the complexity of subscriber equipment.Simultaneously, for the PUSCH channel, the priority of PUSCH increases along with the increase of the initial distribution power that calculates.Because the transmitting power in the formula (1) and MCS, RB number are directly related, so having embodied the PUSCH of high MCS, above principle has higher priority, under the identical situation of MCS, the PUSCH that the RB number is many has higher relatively priority principle, thereby effectively reduces the loss of throughput that power limited brings to subscriber equipment.

Fig. 5 is the flow chart according to the Poewr control method 400 of the embodiment of the invention three.The description of Fig. 5 combines the application scenarios 100 of Fig. 1, but is not limited to the form of application scenarios 100.

In step 402, subscriber equipment receives the open Loop Power control parameter that send the base station.Such as, UE102 can receive the open Loop Power control parameter of the CC of base station 104 transmissions.The open Loop Power control parameter comprises path loss penalty coefficient α _j, embody the parameter P of base station 104 interference levels (being characterized by receiving terminal target SINR) _{0_j}, and the path loss deviant that is only caused by the different frequency between PCC and all SCC.Such as, the CC106 that transmits control information herein is main CC.And SCC and PCC be when identical frequency band, and the path loss deviant of j CC is Δ _{PL_j}=0, and not when same frequency band, Δ _{PL_j}Non-vanishing.

In step 404, subscriber equipment carries out the RSRP measurement to main CC and obtains path loss values PL between subscriber equipment and this CC of residential quarter _{J_PCC}, utilize the specific Δ of SCC then _{PL_j}, obtain the PL of each SCC _j=PL _{J_PCC}+ Δ _{PL_j}

In step 406, subscriber equipment is determined the CC Initial Trans of subscriber equipment according to path loss values and open Loop Power control parameter.Such as, UE102 is according to the path loss values PL that obtains in step 404 _jWith the open Loop Power control parameter alpha that in step 402, obtains _jAnd P _{0_j}, can determine an initial value of the CC specified upstream transmitting power of UE102:

P _{CC_j}=min{P _{max_j},10logM _j+P _{0_j}+α _jPL _j+Δ _{MCS_j}},j=1,2,3

In step 408, subscriber equipment receives the closed power control command of base station emission.Such as, base station in service sector 106 can send the closed power control command according to real-time condition, is presented as f (Δ in power control _{I_j}).UE102 receives the closed power control command f (Δ of base station 106 emissions _{I_j}).

In step 410, subscriber equipment is adjusted the transmitting power of subscriber equipment according to the closed power control command.Such as, UE102 is according to the closed power control command that gets access to, with f (Δ _{I_j}) factor takes into account, to P _{CC_j}Adjust, thus the transmitting power of UE102 in the acquisition formula (1).

In step 412, subscriber equipment receives the specific CQI of CC (channel quality index, the channel quality indication) instruction of base station emission.

In step 414, subscriber equipment obtains CC according to CQI instruction and specifically quantizes SINR.

In step 416, the Initial Trans summation of three CC of subscriber equipment statistics, and judge whether this value surpasses the maximum transmission power P of this subscriber equipment _Max

In step 418, if step 416 is returned negative decision, then the power of this subscriber equipment does not have limitedly, and Initial Trans does not need to adjust.Otherwise this subscriber equipment carries out the power adjustment: the PUSCH priority factor β that subscriber equipment has UCI is set to 0, and adjusts as follows, obtains power P _{CC_j}(β):

$P_{\mathrm{CC}\_1}(\mathrm{\β}=0)=P_{\mathrm{CC}\_1}-\frac{\underset{j=1}{\overset{3}{\mathrm{\Σ}}}{P}_{\mathrm{CC}\_j}-P_{\max }}{\underset{j=1}{\overset{3}{\mathrm{\Σ}}}{P}_{\mathrm{CC}\_j}}\×P_{\mathrm{CC}\_1}\×\mathrm{\β}---\left(8\right)$

$P_{\mathrm{CC}\_2}\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_2}-\frac{(P_{\mathrm{CC}\_2}+P_{\mathrm{CC}\_3})-(P_{\max }-P_{\mathrm{CC}\_1}(\mathrm{\β}=0))}{{\mathrm{SINR}}_2+{\mathrm{SINR}}_3}\×{\mathrm{SINR}}_3---\left(9\right)$

$P_{\mathrm{CC}\_3}\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_3}-\frac{(P_{\mathrm{CC}\_2}+P_{\mathrm{CC}\_3})-(P_{\max }-P_{\mathrm{CC}\_1}(\mathrm{\β}=0))}{{\mathrm{SINR}}_2+{\mathrm{SINR}}_3}\×{\mathrm{SINR}}_2---\left(10\right)$

Formula (9), (10) are that the SINR(according to the 2nd CC, the 3rd CC is expressed as SINR _j, j=1,2,3) cut down in proportion.

In step 420, subscriber equipment judges that whether the adjustment power of each CC is less than 0.

In step 422, if step 420 is returned positive result, then this subscriber equipment can send according to the adjustment power that step 418 draws.Otherwise this subscriber equipment cuts out and adjusts back power less than 0 PUSCH channel.And reenter step 418, all more than or equal to zero, and summation is no more than the maximum transmit power value of this subscriber equipment up to the power of all CC.

Method 400 still only need be carried out a RARP measurement, and many CC of CC(of the different band of subscriber equipment polymerization are in the situation of different frequency bands) time, need to receive the new signaling of introducing and obtain the path loss deviant.The power-priority factor beta that has the PUSCH of UCI simultaneously still is 0.Yet, in the scene of power limited, for the PUSCH channel, the priority of PUSCH is along with the SINR of this CC increases and increases, the quality of the specific up link of each CC of embodiment that can be actual, thus the loss of throughput that power limited brings to subscriber equipment can more effectively be reduced.

Fig. 6 is the structural representation according to the subscriber equipment 500 of the embodiment of the invention one.Subscriber equipment 500 comprises that receiving system 502, path loss deriving means 504 and Initial Trans determine device 506, power limited judgment means 508, power adjustment apparatus 510, the non-negative judgement device 512 of power, channel off device 514.

Receiving system 502 is used for receiving the open Loop Power control parameter that send the base station.

Path loss deriving means 504 is used for obtaining the path loss values between CC and base station.

Initial Trans determines that device 506 is used for determining according to path loss values and open Loop Power control parameter the specific Initial Trans of CC of subscriber equipment.

Interchannel power division priority factor deriving means (not shown), the power division priority factor of all kinds of interchannels that utilize when being used for setting to base station transmission data;

The channel internal power distributes priority factor deriving means (not shown), is used for setting the power division priority factor of a plurality of B inside that sends to the base station;

Transmitting power is determined the device (not shown), is used for determining according to the power division priority factor of the power division priority factor of described Initial Trans, described all kinds of interchannels and a plurality of B inside the transmitting power of the CC of UE;

Power limited judgment means 508 is used for judging whether the Initial Trans summation of all CC surpasses the upper limit of emission power of subscriber equipment.

Power adjustment apparatus 510 is used for adjusting each channel transmitting power makes the transmitting power sum of all CC within the transmitting power scope of subscriber equipment.

The non-negative judgement device 512 of power is used for judging whether the adjustment power of each CC minus situation occurs.

Channel off device 514 is used for closing the minus channel of adjustment power.

Fig. 7 is the structural representation according to the subscriber equipment 600 of the embodiment of the invention two.Subscriber equipment 600 comprises that receiving system 602, path loss deriving means 604, Initial Trans determine that device 606, power limited judgment means 608, power adjustment apparatus 610, the non-negative judgement of power put 612, channel off device 614.

Receiving system 602 is used for receiving the open Loop Power control parameter that send the base station.

Path loss deriving means 604 is used for obtaining the CC particular path loss value of subscriber equipment and minizone.Path loss deriving means 604 further comprises: PCC path loss acquisition module 12 and SCC path loss acquisition module 14.Path loss acquisition module 12 is used for obtaining the path loss values between subscriber equipment PCC and the residential quarter.SCC path loss acquisition module 14 is used for choosing path loss values between subscriber equipment PCC and the residential quarter from PCC path loss values and the specific path loss deviant of SCC.

Initial Trans determines that device 606 is used for determining according to path loss values, open Loop Power control parameter and closed power control parameter the specific Initial Trans of CC of subscriber equipment.Path loss deriving means 606 further comprises: open loop transmit power determination module 16 and closed loop parameter adjustment module 18.Open loop transmit power determination module 16 is used for determining the specific open loop Initial Trans of subscriber equipment CC according to path loss values and open Loop Power control parameter.Closed loop parameter adjustment module 18 is used for receiving the closed power control command of base station emission, and according to the closed power control command transmitting power of subscriber equipment is adjusted.

Interchannel power division priority factor deriving means (not shown), the power division priority factor of all kinds of interchannels that utilize when being used for setting to base station transmission data;

The channel internal power distributes priority factor deriving means (not shown), is used for setting the power division priority factor of a plurality of B inside that sends to the base station;

Transmitting power is determined the device (not shown), is used for determining according to the power division priority factor of the power division priority factor of described Initial Trans, described all kinds of interchannels and a plurality of B inside the transmitting power of the CC of UE;

Power limited judgment means 608 is used for judging whether the Initial Trans summation of all CC surpasses the upper limit of emission power of subscriber equipment.

Power adjustment apparatus 610 is used for adjusting each channel transmitting power makes the transmitting power sum of all CC within subscriber equipment power capability scope.

The non-negative judgement device 612 of power is used for judging whether the adjustment power of each CC minus situation occurs.

Channel off device 614 is used for closing the minus channel of adjustment power.

Fig. 8 is the structural representation according to the carrier aggregation system 700 of the embodiment of the invention.Carrier aggregation system 700 comprises base station 702 and subscriber equipment 704.

Base station 702 is used for sending open and close ring power contorl parameters and CC priority factor.Base station 702 can also comprise open loop parameter adjustment controls 22, closed loop parameter adjustment controls 24, CC priority setting device 26 and dispensing device 28 in one embodiment.Open loop parameter adjustment controls 22 are used for changing the path loss penalty coefficient, and the parameter that changes the interference level that embodies the base station.The compensation that open loop parameter adjustment controls 22 change the path loss penalty coefficient can be Δ α=0.1.Open loop parameter adjustment controls 22 change the amplitude of the parameter of the interference level that embodies the base station and can determine according to the mean value of all subscriber equipment path losses in the residential quarter of base station covering.Closed loop parameter adjustment controls 24 are used for arranging the parameter of closed power fine setting.CC priority setting device 26 is used for quantizing the specific SINR value of up CC.Dispensing device 28 is used for the parameter of path loss penalty coefficient and embodiment base station interference level, closed power control fine setting parameter, up CC particular priority coefficient are sent to subscriber equipment.

Subscriber equipment 704 is used for receiving the open Loop Power control parameter that the base station sends, obtain the CC particular path loss value of subscriber equipment and minizone, according to path loss values and the specific transmitting power of open Loop Power control parameter acquiring subscriber equipment CC, judge whether the Initial Trans summation of all CC surpasses the upper limit of emission power of subscriber equipment, adjust each channel transmitting power and make the transmitting power sum of all CC within subscriber equipment power capability scope, judge and close and adjust the minus channel of back power.Subscriber equipment 704 comprises that receiving system 704.2, path loss deriving means 704.4, Initial Trans determine device 704.6, power limited judgment means 704.8, power adjustment apparatus 704.10, the non-negative judgement device 704.12 of power and channel off device 704.14, wherein, path loss deriving means 704.4 comprises PCC path loss acquisition module 28 and SCC path loss acquisition module 30; Initial Trans determines that device 704.6 comprises open loop transmit power determination module 32 and closed loop parameter adjustment module 34; Power adjustment apparatus 704.10 comprises that priority factor acquisition module 36(comprises that interchannel power division priority factor deriving means, channel internal power distribute the priority factor deriving means) and the CC certain power subdue module 38.

The above execution mode of the present invention only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.

Claims (9)

1. ascending power control method, it is characterized in that, the scene that a plurality of data channels that have power limited under the carrier aggregation are transmitted simultaneously is divided into two kinds: a Physical Uplink Shared Channel A who has ascending control information UCI, and a plurality of Physical Uplink Shared Channel B that does not have ascending control information provides service for a user equipment (UE) simultaneously; Only a plurality of B among a plurality of carrier wave unit CC are simultaneously for a UE provides service, and based on above two kinds of scenes, UE sends multiple channel at a plurality of CC simultaneously, and ascending control information transmits at a CC, and this method may further comprise the steps:

S1, UE receive the open Loop Power control parameter of the CC that sends the base station;

S2, UE obtain the path loss values of its each CC and base station;

S3, UE determine the Initial Trans of each CC of UE according to described open Loop Power control parameter and path loss values;

S4, if judge to need adjust described Initial Trans, the power division priority factor of all kinds of interchannels that utilize when then UE sets and sends data to the base station;

S5, UE set the power division priority factor of a plurality of B inside that sends to the base station;

S6, UE determine the transmitting power of the CC of UE according to the power division priority factor of the power division priority factor of described Initial Trans, described all kinds of interchannels and a plurality of B inside;

Be specially if judge to need adjust described Initial Trans described in the step S4: judge whether that according to the Initial Trans sum of all CC needs adjust described Initial Trans, if the Initial Trans sum of all CC does not then need to adjust described Initial Trans less than the maximum transmission power of UE;

When UE transmits three simultaneously with being with continuous CC, one of them CC transmission has the PUSCH of UCI, when two other CC all only transmits PUSCH, the power division priority factor of all kinds of interchannels that utilize when then UE described in the step S4 sets to base station transmission data, be specially: the PUSCH priority factor β that has UCI is set to 0;

Then according to following formula described Initial Trans is adjusted:

$P_{\mathrm{CC}\_1}\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_1}-\frac{\underset{j=1}{\overset{3}{\mathrm{\Σ}}}{P}_{\mathrm{CC}\_j}{-P}_{\max }}{\underset{j=1}{\overset{3}{\mathrm{\Σ}}}{P}_{\mathrm{CC}\_j}}\×P_{\mathrm{CC}\_1}\×\mathrm{\β}$

$P_{\mathrm{CC}\_2}\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_2}-\frac{(P_{\mathrm{CC}\_2}+P_{\mathrm{CC}\_3})-(P_{\max }-P_{\mathrm{CC}\_1}\left(\mathrm{\β}\right))}{2}$

$P_{\mathrm{CC}\_3}=\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_3}-\frac{(P_{\mathrm{CC}\_2}+P_{\mathrm{CC}\_3})-(P_{\max }-P_{\mathrm{CC}\_1}\left(\mathrm{\β}\right))}{2},$

Wherein, P _{CC_j}Be the Initial Trans of j the CC of UE, P _{CC_j}(β) for to get under certain definite value situation at the PUSCH of UCI priority factor β, the power after j CC adjusts, P _MAXMaximum transmission power for UE.

2. ascending power control method according to claim 1 is characterized in that, described open Loop Power control parameter comprises the path loss penalty coefficient and embodies the parameter of the interference level of described base station.

3. ascending power control method according to claim 1 is characterized in that, step S2 is specially:

UE carries out Reference Signal Received Power RSRP to each CC and measures, to obtain described path loss values; Perhaps

UE carries out RSRP to main CC and measures, to obtain the path loss values of main CC; And obtain the path loss deviant of time CC, the path loss deviant that the path loss values of main CC is added CC last time obtains the path loss values of time CC.

4. ascending power control method according to claim 1 is characterized in that, step S4 is specially: it is limit priority that UE sets the A that sends to the base station, and sets the priority of the B that sends to the base station.

5. ascending power control method according to claim 1 is characterized in that, step S5 is specially:

The priority that UE sets each B is identical; Perhaps

UE sets the priority of each B according to described Initial Trans; Perhaps

The priority of each B is set in the instruction that UE sends according to the base station.

6. ascending power control method according to claim 1 is characterized in that, also comprises step between step S3 and S4:

S301, UE receive the closed power control command of base station emission;

S302, UE adjust the Initial Trans of each CC of UE according to described closed power control command.

7. subscriber equipment, it is characterized in that, the scene that a plurality of data channels that have power limited under the carrier aggregation are transmitted simultaneously is divided into two kinds: a Physical Uplink Shared Channel A who has ascending control information UCI, and a plurality of Physical Uplink Shared Channel B that does not have ascending control information provides service for a user equipment (UE) simultaneously; Only a plurality of B among a plurality of carrier wave unit CC are simultaneously for a UE provides service, and described subscriber equipment is used for carrying out uplink power control based on above two kinds of scenes, and UE sends multiple channel at a plurality of CC simultaneously, and ascending control information transmits at a CC, comprising:

Receiving system is for the open Loop Power control parameter that receives the CC that sends the base station;

The path loss deriving means is used for obtaining the path loss values between each CC and base station;

Initial Trans is determined device, is used for determining according to described open Loop Power control parameter and path loss values the Initial Trans of the CC of UE;

Judgment means is used for Initial Trans sum according to all CC and judges whether that needs adjust described Initial Trans, if the Initial Trans sum of all CC does not then need to adjust described Initial Trans less than the maximum transmission power of UE;

Interchannel power division priority factor deriving means, the power division priority factor of all kinds of interchannels that utilize when being used for setting to base station transmission data;

The channel internal power distributes the priority factor deriving means, is used for setting the power division priority factor of a plurality of B inside that sends to the base station;

Transmitting power is determined device, is used for determining according to the power division priority factor of the power division priority factor of described Initial Trans, described all kinds of interchannels and a plurality of B inside the transmitting power of the CC of UE;

When UE transmits three simultaneously with being with continuous CC, one of them CC transmission has the PUSCH of UCI, when two other CC all only transmits PUSCH, the power division priority factor of all kinds of interchannels that utilize when then described interchannel power division priority factor deriving means is set to base station transmission data, be specially: the PUSCH priority factor β that has UCI is set to 0;

Then according to following formula described Initial Trans is adjusted:

$P_{\mathrm{CC}\_1}\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_1}-\frac{\underset{j=1}{\overset{3}{\mathrm{\Σ}}}{P}_{\mathrm{CC}\_j}{-P}_{\max }}{\underset{j=1}{\overset{3}{\mathrm{\Σ}}}{P}_{\mathrm{CC}\_j}}\×P_{\mathrm{CC}\_1}\×\mathrm{\β}$

$P_{\mathrm{CC}\_2}\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_2}-\frac{(P_{\mathrm{CC}\_2}+P_{\mathrm{CC}\_3})-(P_{\max }-P_{\mathrm{CC}\_1}\left(\mathrm{\β}\right))}{2}$

$P_{\mathrm{CC}\_3}=\left(\mathrm{\β}\right)=P_{\mathrm{CC}\_3}-\frac{(P_{\mathrm{CC}\_2}+P_{\mathrm{CC}\_3})-(P_{\max }-P_{\mathrm{CC}\_1}\left(\mathrm{\β}\right))}{2},$

Wherein, P _{CC_j}Be the Initial Trans of j the CC of UE, P _{CC_j}(β) for to get under certain definite value situation at the PUSCH of UCI priority factor β, the power after j CC adjusts, P _MAXMaximum transmission power for UE.

8. equipment according to claim 7 is characterized in that, described equipment also comprises: the closed loop parameter adjustment controls, be used for receiving the closed power control command that launch the base station, and according to described closed power control command the transmitting power of the CC of UE is adjusted.

9. a carrier aggregation system is characterized in that, comprising: the base station is used for sending open Loop Power control parameter and closed power parameter; With claim 7 or 8 described subscriber equipmenies.

Images