CN102158942B - Power control method, network equipment and terminal - Google Patents

Abstract

The invention discloses a power control method, network equipment and a terminal, which belong to the technical field of wireless communication. The method comprises that: the network equipment acquires the carrier information of a plurality of carriers of the terminal; when determining the transmission power of the terminal is required to be regulated, the network equipment calculates power back-off factors of each carrier according to the priorities of the carriers and/or channel quality information, wherein the power back-off factor meets the conditions that: the carrier of a channel with higher quality has a lower power back-off factor, the carrier with a higher priority has the lower power back-off factor, and the total throughput of the plurality of carriers is maximum after the transmission power of the plurality of carriers is regulated; and the network equipment transmits the power back-off factors to the terminal, so that the terminal can regulate the transmission power of the plurality of carriers according to the power back-off factors. The network equipment comprises an acquisition module, a calculation module and a transmission module. By the power control method, the network equipment and the terminal, the power back-off of the terminal is controlled according to the carrier information, and a clear scheme is provided for the power back-off of the terminal in the multi-carrier application scene of a long-term evolution (LTE)-A system.

Description

Poewr control method, the network equipment and terminal

Technical field

The present invention relates to wireless communication technology field, particularly a kind of Poewr control method, the network equipment and terminal.

Background technology

In traditional wireless communication system, the terminal up link is carried on an independent carrier wave, and the PA (Power Amplifier, power amplifier) that terminal is used also only has one, therefore, terminal being carried out power only controls and need carry out on a carrier wave.A terminal has the maximum uplink transmission power of regulation, and a carrier wave and a PA also have the maximum uplink transmission power that allows separately.Usually, the base station can be uplink transmission power of terminal configuration in advance, if this uplink transmission power does not exceed the maximum uplink transmission power of terminal, terminal can be used this uplink transmission power the transmission of data, if this uplink transmission power has exceeded the maximum uplink transmission power of terminal, terminal can adopt this maximum uplink transmission power the transmission of data.Needs for power control and scheduling, terminal need to be passed through PHR (Power Headroom Report, the report of power remaining space) report power to control relevant information PH (Power Headroom, the power remaining space) give the base station, understand the power configuration information of terminal to facilitate the base station, accurately obtain the uplink transmission power that current terminal is used, the ascending power operating position of terminal is monitored, and then carried out power adjustment or scheduling decision.

At LTE (Long-term Evolution, Long Term Evolution) in system, PUCCH (Physical Uplink Controll Channel, Physical Uplink Control Channel) and PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) can not send simultaneously, and PUCCH does not have PH, and only there is PH in PUSCH.The power P of PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) _PUSCHAnd the formula of PH is as follows respectively:

P _PUSCH(i)＝min{P _CMAX，10log ₁₀(M _PUSCH(i))+P _{O_PUSCH}(j)+α(j)·PL+Δ _TF(i)+f(i)}[dB]

PH(i)＝P _CMAX-{10log ₁₀(M _PUSCH(i))+P _{O_PUSCH}(j)+α(j)·PL+Δ _TF(i)+f(i)}[dB]

Wherein, P _CMAXBe the maximum uplink transmission power of terminal, due in the LTE system, a carrier wave and a PA only arranged, so P _CMAXBeing also the maximum transmission power that this carrier wave allows, is also simultaneously the maximum transmission power that this PA allows, 10log ₁₀(M _PUSCH(i))+P _{O_PUSCH}(j)+α (j) PL+ Δ _TF(i)+f (i) is that the base station is the uplink transmission power of this terminal configuration, and its value can be greater than P _CMAXI refers to i subframe, and the type of the corresponding PUSCH transmission of j comprises semi-persistent scheduling, dynamic dispatching and random access transmission, and the span of j is { 0,1,2}, the M in formula _PUSCH(i), P _{O_PUSCH}(j), α (j), Δ _TF(i), the parameter such as f (i) configures and is handed down to terminal, M by the base station _PUSCH(i) be the i subframe is distributed to this terminal on this carrier wave logistics Resource Block quantity (unit is PRB, Physical Resource Block), P _{O_PUSCH}(j) be the target power desired value that will be reached by the terminal that network side configures, α (j) is road loss compensation factor, is used for controlling full compensation or partial-compensation to path loss, Δ _TF(i) be the parameter relevant to transformat, f (i) is the power control instruction that is issued by TPC, and PL (PathLoss, descending path loss) calculates and be kept at terminal by terminal.

The span of PH is [40 ,-23] dB, and step-length is 1dB.When PH≤0, the actual uplink transmitting power of expression terminal has reached maximum.

As shown from the above formula, P _PUSCH(i) be at P _CMAXConfigure in uplink transmission power to terminal with the base station and get minimum value, even the base station configures uplink transmission power to terminal greater than P _CMAX, also have all the time following relation: P _PUSCH(i)≤P _CMAX, therefore, the LTE system is the required power rollback not.

In the LTE-A system, increased the scene of carrier aggregation, namely a terminal can use more than one carrier wave and base station to communicate simultaneously, and has cancelled the restriction that PUCCH and PUSCH can not send simultaneously.Carrier aggregation exists two kinds of scenes, continuous carrier polymerization and discontinuous carrier polymerization.The continuous carrier polymerization refers to that a plurality of carrier waves of polymerization are positioned at same wave band, and is adjacent on frequency; The discontinuous carrier polymerization refers on a plurality of carrier frequencies of polymerization even to be positioned at different wave bands relatively far apart.The introducing of carrier aggregation brings variation also for the hardware configuration of terminal upstream transmitter, and the transmitter of continuous carrier polymerization can be realized with single or multiple PA, and the discontinuous carrier polymerization must realize with a plurality of PA.

For the LTE-A system, due to the network side maximum transmission power of a configurating terminal still, so the maximum transmission power of each carrier wave is the maximum transmission power of terminal, thereby the situation that can cause power sum on all carrier waves to surpass the maximum uplink transmission power of terminal occurs, so cause terminal can't realize up emission or uplink transmission power too high cause the interference of other-end excessive.

Summary of the invention

In order to solve the problem of prior art, the embodiment of the present invention provides a kind of Poewr control method, the network equipment and terminal.Described technical scheme is as follows:

A kind of Poewr control method, described method comprises:

The network equipment obtains the carrier information of a plurality of carrier waves of terminal, and described carrier information comprises priority β and/or channel quality information;

the described network equipment is when determining to need to adjust the transmitting power of described a plurality of carrier waves, priority β and/or channel quality information according to each carrier wave in described a plurality of carrier waves, calculate the back-off factor ξ of each carrier wave in described a plurality of carrier wave, described back-off factor ξ one of meets the following conditions or its combination in any: the back-off factor ξ of the carrier wave that in described a plurality of carrier waves, channel quality is higher is less, the back-off factor ξ of the carrier wave that described a plurality of carrier wave medium priority β is higher is less, and described terminal adjust after the transmitting power of described a plurality of carrier waves the throughput total amount of described a plurality of carrier waves according to described back-off factor ξ maximum,

The described network equipment sends to described terminal with described back-off factor ξ, makes described terminal can adjust according to the described back-off factor ξ transmitting power of described a plurality of carrier waves;

Wherein, described priority β and/or channel quality information according to each carrier wave in described a plurality of carrier waves calculate the back-off factor ξ of each carrier wave in described a plurality of carrier wave, comprise one of following:

If the priority β of carrier wave is determined by the service quality QoS of the business of this carriers carry and/or the channel of this carriers carry, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=N/ β+M, wherein, N and M are constant, and only carry the priority of the priority of the carrier wave of Physical Uplink Control Channel PUCCH＞carry the simultaneously carrier wave of PUCCH and Physical Uplink Shared Channel PUSCH＞only the carry priority of the carrier wave of PUSCH;

If described channel quality information comprises path gain g and/or the interference noise total amount I of carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=P/ η+Q, and wherein P and Q are constant, and η is any one in g, I and g*I;

if the priority β of carrier wave is determined by the QoS of the business of this carriers carry and/or the channel of this carriers carry, and described channel quality information comprises path gain g and/or the interference noise total amount I of carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=S/ (β * η)+T or ξ=N/ β+P/ η+W, S wherein, T, N, P, W is constant, η is g, any one in I and g*I, and only carry the priority of the priority of the carrier wave of PUCCH＞carry the simultaneously carrier wave of PUCCH and PUSCH＞only the carry priority of the carrier wave of PUSCH,

If described channel quality information comprises path gain g and the interference noise total amount I of carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to maximum transmission power and the path gain g of the statistical value of the actual emission power of described carrier wave, interference noise total amount I, described terminal.

Another kind of Poewr control method, described method comprises:

The back-off factor of a plurality of carrier waves of the described terminal that the terminal reception network equipment sends, the described back-off factor is calculated by the carrier information of the described network equipment according to described a plurality of carrier waves, and described carrier information comprises priority β and/or channel quality information;

If described back-off factor representation back-off value, described terminal is adjusted the transmitting power of described a plurality of carrier waves according to the described back-off factor; Perhaps,

If the described back-off factor is through normalized, described terminal is according to described back-off factor rated output rollback value, and adjusts the transmitting power of described a plurality of carrier waves according to described back-off value;

Wherein, described terminal also comprises before adjusting the transmitting power of described a plurality of carrier waves:

In the described a plurality of carrier waves of described terminal judges, whether the summation of the second transmitting power of all carrier waves is greater than the maximum transmission power of described terminal, wherein, for arbitrary carrier wave, to be the described network equipment be the minimum value between the maximum transmission power of the transmitting power of this carrier wave configuration and this carrier wave to the second transmitting power of carrier wave;

If judgment result is that to be, described terminal is carried out the step of adjusting the transmitting power of described a plurality of carrier waves according to the described back-off factor, perhaps carries out the step according to described back-off factor rated output rollback value.

A kind of network equipment, the described network equipment comprises:

Acquisition module, for the carrier information of a plurality of carrier waves that obtain terminal, described carrier information comprises priority β and/or channel quality information;

computing module, be used for when adjusting the transmitting power of described a plurality of carrier waves, priority β and/or channel quality information according to each carrier wave in described a plurality of carrier waves, calculate the back-off factor ξ of each carrier wave in described a plurality of carrier wave, described back-off factor ξ one of meets the following conditions or its combination in any: the back-off factor ξ of the carrier wave that in described a plurality of carrier waves, channel quality is higher is less, the back-off factor ξ of the carrier wave that described a plurality of carrier wave medium priority β is higher is less, and described terminal adjust after the transmitting power of described a plurality of carrier waves the throughput total amount of described a plurality of carrier waves according to described back-off factor ξ maximum,

Sending module is used for described back-off factor ξ is sent to described terminal, makes described terminal can adjust according to the described back-off factor ξ transmitting power of described a plurality of carrier waves;

Wherein, described computing module comprises with one of lower unit:

The first computing unit, if being used for the priority β of carrier wave is determined by the service quality QoS of the business of carriers carry and/or the channel of carriers carry, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=N/ β+M, wherein, N and M are constant, and only carry the priority of the priority of the carrier wave of upper physical limit control channel PUCCH＞carry the simultaneously carrier wave of PUCCH and upper physical limit shared channel PUSCH＞only the carry priority of the carrier wave of PUSCH;

The second computing unit, if be used for path gain g and/or interference noise total amount I that described channel quality information comprises carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=P/ η+Q, and wherein P and Q are constant, and η is any one in g, I and g*I;

the 3rd computing unit, if being used for the priority β of carrier wave is determined by the QoS of the business of carriers carry and/or the channel of carriers carry, and described channel quality information comprises path gain g and/or the interference noise total amount I of carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=S/ (β * η)+T or ξ=N/ β+P/ η+W, S wherein, T, N, P, W is constant, η is g, any one in I and g*I, and only carry the priority of the priority of the carrier wave of PUCCH＞carry the simultaneously carrier wave of PUCCH and PUSCH＞only the carry priority of the carrier wave of PUSCH,

The 4th computing unit, if be used for path gain g and interference noise total amount I that described channel quality information comprises carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to maximum transmission power and the path gain g of the statistical value of the actual emission power of described carrier wave, interference noise total amount I, described terminal.

A kind of terminal, described terminal comprises:

Receiver module, be used for to receive the back-off factor of a plurality of carrier waves of the described terminal that the network equipment sends, the described back-off factor is calculated by the carrier information of the described network equipment according to described a plurality of carrier waves, and described carrier information comprises priority β and/or channel quality information;

Adjusting module if be used for described back-off factor representation back-off value, is adjusted the transmitting power of described a plurality of carrier waves according to the described back-off factor; Perhaps, if the described back-off factor through normalized, according to described back-off factor rated output rollback value, and is adjusted the transmitting power of described a plurality of carrier waves according to described back-off value;

Wherein, described terminal also comprises:

Judge module, be used for judging that the summation of the second transmitting power of described a plurality of all carrier waves of carrier wave is whether greater than the maximum transmission power of described terminal, wherein, for arbitrary carrier wave, to be the described network equipment be the minimum value between the maximum transmission power of the transmitting power of this carrier wave configuration and this carrier wave to the second transmitting power of carrier wave; If judgment result is that to be, trigger described adjusting module and carry out the step of adjusting the transmitting power of described a plurality of carrier waves according to the described back-off factor, perhaps carry out the step according to described back-off factor rated output rollback value.

The technique scheme that the embodiment of the present invention provides, the network equipment calculates the back-off factor according to the carrier information that obtains, and send to terminal, make terminal to carry out back-off according to this back-off factor, thereby the transmitting power that has guaranteed terminal can not exceed the maximum transmission power of described terminal, for the back-off of terminal under the application scenarios of multicarrier in the LTE-A system provides a clearly solution.

Description of drawings

Fig. 1 is the Poewr control method flow chart that the embodiment of the present invention 1 provides;

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

Fig. 3 is the Poewr control method flow chart that the embodiment of the present invention 3 provides;

Fig. 4 is the Poewr control method flow chart that the embodiment of the present invention 4 provides;

Fig. 5 is the Poewr control method flow chart that the embodiment of the present invention 5 provides;

Fig. 6 is the terminal schematic diagram of single PA structure of providing of the embodiment of the present invention 5;

Fig. 7 is the terminal schematic diagram of many PA structure of providing of the embodiment of the present invention 5;

Fig. 8 is a kind of network equipment structural representation that the embodiment of the present invention 6 provides;

Fig. 9 is the another kind of network equipment structural representation that the embodiment of the present invention 6 provides;

Figure 10 is a kind of terminal structure schematic diagram that the embodiment of the present invention 7 provides;

Figure 11 is the another kind of terminal structure schematic diagram that the embodiment of the present invention 7 provides.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.

Embodiment 1

In order to realize the control to terminal power at network side, referring to Fig. 1, the present embodiment provides a kind of Poewr control method, comprising:

101: the network equipment obtains the carrier information of a plurality of carrier waves of terminal, and this carrier information comprises priority β and/or channel quality information;

102: the network equipment is when determining to need to adjust the transmitting power of a plurality of carrier waves, priority β and/or channel quality information according to each carrier wave in a plurality of carrier waves, calculate the back-off factor ξ of each carrier wave in a plurality of carrier waves, and back-off factor ξ one of meets the following conditions or its combination in any: the back-off factor ξ of the carrier wave that in a plurality of carrier waves, channel quality is higher is less, the back-off factor ξ of the carrier wave that a plurality of carrier wave medium priority β are higher is less, and terminal adjust after the transmitting power of a plurality of carrier waves the throughput total amount of a plurality of carrier waves according to power factor ξ maximum,

103: the network equipment sends to terminal with the back-off factor ξ that calculates, and makes terminal can adjust according to this back-off factor ξ the transmitting power of a plurality of carrier waves.

Wherein, the priority of above-mentioned carrier wave can be determined by the service quality of the business of carriers carry and/or the channel of carriers carry, above-mentioned channel quality information comprises interference noise total amount that receives in the path gain, carrier bandwidths of terminal to base station on carrier wave etc., and the embodiment of the present invention is not specifically limited this.

In the present embodiment, the network equipment determines to need to adjust the transmitting power of a plurality of carrier waves, the transmitting power of GC group connector does not transfinite, also GC group connector need to not adjusted transmitting power, just network side thinks that terminal may need to adjust the transmitting power of a plurality of carrier waves, when certainly network side also can transfinite in the transmitting power of terminal or will transfinite the time, initiate the process of above-mentioned calculating and transmission.

In the present embodiment, particularly, can the back-off factor that calculate be sent to terminal by uplink authorization information or through-put power control signal.

The above-mentioned network equipment can be specially base station, relay station or other have the network entity of base station functions, as NodeB, and eNodeB etc.

The technical scheme that the arbitrary embodiment of the present invention provides can be applied to the application scenarios of multi-carrier polymerizing, as in the LTE-A system.Although the LTE-A system carrier aggregation is supported at most two carrier waves at present, but consider the expansion of the fast-developing and following terminal capability of hardware, the embodiment of the present invention is not done hard limit to its application scenarios, both can support the scene of two carrier waves, also can support the scene of two above carrier waves.In addition, the terminal in the arbitrary embodiment of the present invention can be single PA structure, namely only has a PA, also can be many PA structure, and at least two PA are namely arranged, and the embodiment of the present invention is not specifically limited this.

What of back-off are the back-off factor that the arbitrary embodiment of the present invention relates to reflected, this back-off factor can be the value of the actual rollback of power, also can be normalized ratio value, as several in percentage 30% etc., the back-off factor sum of all carrier waves equals 1 after normalization.

The said method that the present embodiment provides, the network equipment calculates the back-off factor according to carrier information, and send the back-off factor to terminal, make terminal to carry out back-off according to this back-off factor, realized the back-off according to the carrier information control terminal, for the back-off of terminal under the application scenarios of multicarrier in the LTE-A system provides a clearly solution.The present embodiment and following each embodiment not only can be applied in the LTE-A system, can also be applied in the system of other multicarriers, and the present invention is not limited.

Embodiment 2

In order to realize the control to terminal power at network side, referring to Fig. 2, the present embodiment provides another kind of Poewr control method, comprising:

201: the network equipment obtains the carrier information of a plurality of carrier waves of terminal, and this carrier information comprises priority β and/or channel quality information;

202: the network equipment is according to the carrier information of a plurality of carrier waves, set the maximum transmission power of each carrier wave in a plurality of carrier waves, make the maximum transmission power of the higher carrier wave of priority β larger, perhaps make the maximum transmission power of the higher carrier wave of channel quality larger;

203: the maximum transmission power of each carrier wave that the network equipment will be set is notified to terminal.

In the present embodiment, the network equipment is when arranging the maximum uplink transmission power of each PA, and the maximum uplink transmission power value of each PA can be set to identical, also can be set to difference.

The said method that the present embodiment provides, the network equipment is set the maximum transmission power of each carrier wave according to carrier information, and send to terminal, making terminal to carry out power according to this carrier wave maximum transmission power controls, realized the power according to the carrier information control terminal, controlling for the power of terminal under the application scenarios of multicarrier in the LTE-A system provides a clearly solution.

Further, the present embodiment can with embodiment 1 combination, namely on the basis of the maximum transmission power of setting each carrier wave, the Poewr control method that Application Example 1 provides carries out back-off.

Embodiment 3

In order to realize power control in end side, referring to Fig. 3, the present embodiment provides a kind of Poewr control method, comprising:

301: the back-off factor of a plurality of carrier waves of the terminal that the terminal reception network equipment sends, this back-off factor is calculated by the carrier information of the network equipment according to a plurality of carrier waves, and this carrier information comprises priority β and/or channel quality information;

302: if back-off factor representation back-off value, terminal is adjusted the transmitting power of a plurality of carrier waves according to the back-off factor; Perhaps, if the back-off factor through normalized, terminal is according to back-off factor rated output rollback value, and adjusts the transmitting power of a plurality of carrier waves according to this back-off value.

In the present embodiment, particularly, terminal can receive uplink authorization information or the through-put power control signal of sending the base station, obtains the back-off factor from this uplink authorization information or through-put power control signal.

In the present embodiment, before the back-off factor of a plurality of carrier waves of the terminal that the terminal reception network equipment sends, can also comprise:

Terminal is to network equipment transmitted power remaining space information, so that the network equipment is according to the power remaining space information transmitted power rollback factor, power remaining space information is for the difference of the maximum transmission power of the first transmitting power that represents terminal and terminal, and the first transmitting power is that the network equipment is the transmitting power of terminal configuration;

Perhaps, when terminal is less than or equal to threshold value in the difference of the maximum transmission power of the first transmitting power of terminal and terminal, adjust indication information to network equipment transmitted power, so that network equipment transmitted power rollback factor after receiving power to adjust indication information, wherein, the first transmitting power is that the network equipment is the transmitting power of terminal configuration.

The said method that the present embodiment provides, receive by terminal the back-off factor that the base station calculates according to carrier information, carry out back-off according to this back-off factor, realized the back-off according to the carrier information control terminal, for the back-off of terminal under the application scenarios of multicarrier in the LTE-A system provides a clearly solution.

Embodiment 4

In order to realize power control in end side, referring to Fig. 4, the present embodiment provides another kind of Poewr control method, comprising:

401: terminal is obtained the carrier information of a plurality of carrier waves of use, and this carrier information comprises priority β and/or channel quality information;

402: when terminal is determined to need to adjust the transmitting power of a plurality of carrier waves, priority β and/or channel quality information according to each carrier wave in a plurality of carrier waves, calculate the back-off factor ξ of each carrier wave in a plurality of carrier waves, and back-off factor ξ one of meets the following conditions or its combination in any: the back-off factor ξ of the carrier wave that in a plurality of carrier waves, channel quality is higher is less, the back-off factor ξ of the carrier wave that a plurality of carrier wave medium priority β are higher is less, and terminal adjust after the transmitting power of a plurality of carrier waves the throughput total amount of a plurality of carrier waves according to power factor ξ maximum,

403: terminal is adjusted the transmitting power of a plurality of carrier waves according to the back-off factor ξ that calculates.

In the present embodiment, terminal for example can receive the channel quality information that network side issues, thus the rated output rollback factor.Concrete computational methods can be implemented with reference to embodiment 1 and embodiment 5, repeat no more herein.

Further, in the present embodiment, when step 403 is adjusted, can be that basis is not processed through the back-off factor of normalized, can be also to process according to the back-off factor through normalized, concrete enforcement can with reference to the step 505 in embodiment 5, repeat no more herein.

The said method that the present embodiment provides, calculate the back-off factor by terminal according to carrier information, carry out back-off according to this back-off factor, realized the back-off according to the carrier information control terminal, for the back-off of terminal under the application scenarios of multicarrier in the LTE-A system provides a clearly solution.

Embodiment 5

Transfinite for fear of terminal power, terminal power is controlled, referring to Fig. 5, the present embodiment provides a kind of Poewr control method, is the base station as the example explanation take the network equipment, and the method comprises:

501: the base station obtains the carrier information of a plurality of carrier waves of terminal, and this carrier information comprises priority and/or channel quality information.

502: the base station determines whether to adjust the transmitting power of a plurality of carrier waves of terminal, if so, carries out 503; Otherwise flow process finishes;

Wherein, the base station determines whether to adjust the transmitting power of a plurality of carrier waves of terminal, can specifically comprise:

The power remaining space information that receiving terminal sends, this power clearance spaces information is for the difference of the maximum transmission power of the first transmitting power that represents terminal and terminal, and this first transmitting power is that the network equipment is the transmitting power of terminal configuration; Determine the actual emission power of terminal according to power remaining space information; When the difference of the maximum transmission power of the actual emission power of terminal and terminal is less than or equal to threshold value, determine to need to adjust the transmitting power of a plurality of carrier waves;

Perhaps, when the power that gets the terminal transmission is adjusted indication information, determine to need adjust the transmitting power of a plurality of carrier waves, this power is adjusted indication information and is sent to network side when the difference of the maximum transmission power of the actual emission power of terminal and terminal is less than or equal to threshold value by terminal.

The result of above-mentioned judgement shows that this moment, the base station wished the back-off factor is issued terminal when being, is used for carrying out back-off in order to terminal; When if the result of judgement is no, this moment, the base station need not the rated output rollback factor, also need not terminal and carried out back-off.

For example, the maximum uplink transmission power of terminal is 23dBm, the actual uplink transmitting power of terminal is 22dBm, default threshold value is 2dB, 23-22＜2, this moment, the uplink transmission power that needs to adjust terminal was judged in the base station, issued the back-off factor to terminal, carried out back-off for terminal and prepared.

Decide when issue the back-off factor to terminal by default threshold value, promptness that can the guaranteed output rollback, make the base station just the back-off factor can be handed down to terminal before terminal power really transfinites, make terminal in time carry out back-off, thereby avoid terminal power to transfinite.

503: the base station calculates the back-off factor according to carrier information according to following any mode:

1) if the priority β of carrier wave determined by the channel of the service quality QoS of the business of carriers carry and/or carriers carry, in a plurality of carrier waves, the back-off factor ξ of each carrier wave calculates according to ξ=N/ β+M, wherein, N and M are constant, and only carry the priority of the priority of the carrier wave of Physical Uplink Control Channel (PUCCH)＞carry the simultaneously carrier wave of PUCCH and Physical Uplink Shared Channel (PUSCH)＞only the carry priority of the carrier wave of PUSCH;

2) if channel quality information comprises path gain g and/or the interference noise total amount I of carrier wave, in a plurality of carrier waves, the back-off factor ξ of each carrier wave calculates according to ξ=P/ η+Q, and wherein P and Q are constant, and η is g, any one in I and g*I;

3) if the priority β of carrier wave determined by the channel of the QoS of the business of carriers carry and/or carriers carry, and channel quality information comprises path gain g and/or the interference noise total amount I of carrier wave, in a plurality of carrier waves, the back-off factor ξ of each carrier wave calculates according to ξ=S/ (β * η)+T or ξ=N/ β+P/ η+W, wherein S, T, N, P, W are constant, η is g, any one in I and g*I, and only carry the priority of the priority of the carrier wave of PUCCH＞carry the simultaneously carrier wave of PUCCH and PUSCH＞only the carry priority of the carrier wave of PUSCH;

4) if channel quality information comprises path gain g and the interference noise total amount I of carrier wave, in a plurality of carrier waves, the back-off factor ξ of each carrier wave calculates according to maximum transmission power and the path gain g of the statistical value of the actual emission power of carrier wave, interference noise total amount I, terminal.

Wherein, for calculating simplicity, at least one value in N, P and S is 1; At least one value in M, Q, T and W is 0.

The below illustrates the setting up procedure of the back-off factor, and the sequence number of carrier wave is designated as i, and i=1 ..., N, representative has N carrier wave; The back-off factor of i carrier wave is designated as ξ _i, above-mentioned 4 kinds of modes can adopt following formula to realize:

1) ξ ₁=ξ ₂=...=ξ _N(formula 1)

Wherein, the value that the back-off factor of N carrier wave is set to equate, its value can be preassigned value, as specifying in advance 20%, 30% etc.;

2) ${\mathrm{\ξ}}_1:{\mathrm{\ξ}}_2:...:{\mathrm{\ξ}}_N=\frac{1}{{\mathrm{\β}}_1*g_1}:\frac{1}{{\mathrm{\β}}_2*g_2}:...:\frac{1}{{\mathrm{\β}}_N*g_N};$ (formula 2)

Wherein, β ₁, β ₂..., β _NPriority for each carrier wave, represent the priority of the type of service that carrier wave carries, be inversely proportional to the back-off factor, more important when the business of carriers carry, this priority is higher, correspondingly, the back-off factor that calculates is lower, thereby the back-off value that obtains is lower, and the back-off that this carrier wave is carried out is less, has guaranteed important business as far as possible not rollback or few rollback; g ₁, g ₂..., g _NPath gain for terminal to base station on each carrier wave;

3) ${\mathrm{\ξ}}_1:{\mathrm{\ξ}}_2:{\mathrm{\ξ}}_3:{\mathrm{\ξ}}_4=\frac{I_1}{{\mathrm{\β}}_1*g_1}:\frac{I_2}{{\mathrm{\β}}_2*g_2}:\frac{I_3}{{\mathrm{\β}}_3*g_3}:\frac{I_4}{{\mathrm{\β}}_4*g_4};$ (formula 3)

Wherein, I ₁, I ₂..., I _NBe noise and the interference that receives in each carrier bandwidths, β ₁, β ₂..., β _NBe the priority of each carrier wave, g ₁, g ₂..., g _NPath gain for terminal to base station on each carrier wave;

$P_{\mathrm{opt}}=\underset{q}{\arg \max }\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{\log }_2(1+\frac{(p_i-q_i)\·g_i}{I_i})$

4) $\left\{\begin{array}{c}{p}_i\≥q_i\≥0,i=\mathrm{1,2},...,N\\ \underset{i=1}{\overset{N}{\mathrm{\Σ}}}{p}_i\≤p_{\max }\\ \underset{i=1}{\overset{N}{\mathrm{\Σ}}}{q}_i=(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{p}_i-p_{\max })\end{array}\right.$ (formula 4)

Wherein, vector P _optBe the optimum power value after back-off corresponding to each carrier wave; p _iBe the statistical value of the actual uplink transmitting power of each carrier wave, N is the carrier wave total quantity, q _iBe i the back-off estimated value that carrier wave is corresponding; p _maxBe the maximum uplink transmission power of terminal, q _maxBe the maximum of the back-off of each carrier wave in a plurality of carrier waves, g _iIt is the path gain of terminal to base station on i carrier wave; I _iIt is the interference noise total amount that receives in i carrier bandwidths.

Calculate back-off estimated value corresponding to each carrier wave according to following formula:

$q_i=p_i+\frac{1}{I_i}(q_{\max }-p_{\max }-\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\frac{1}{g_i}\right)+\frac{I_i}{g_i})$ (formula 5)

If for i arbitrarily, q is arranged all _i≤ p _iSet up, calculate the back-off factor corresponding to each carrier wave according to following formula:

ξ ₁: ξ ₂: ...: ξ _N=q ₁: q ₂: ...: q _N(formula 6)

If there is i, make q _i＞p _iSet up, to g _iArrange from big to small the g that order is minimum _iThe q of corresponding carrier wave _i=p _i, cast out minimum g _iWhether corresponding carrier wave rejudges N-1 remaining carrier wave and exists i to make q _i＞p _iSet up, if still set up cast out again the g of current minimum according to identical method _iCorresponding carrier wave, by that analogy, until for i arbitrarily, q is arranged all _i≤ p _iSet up, then calculate the back-off factor corresponding to each carrier wave according to formula 6, wherein, the carrier wave of casting out is according to q _i=p _iCalculate.

The mode of above-mentioned four kinds of back-off factors, its effect can change to embody by the throughput of system after back-off, in the situation that the back-off total amount is identical, throughput of system reduces fewer, the back-off algorithm is better, after above-mentioned the 1st, 3,4 kind of throughput corresponding to mode are carried out simulation analysis, can learn, take mode 1 constant power rollback as benchmark, the throughput of system of mode 3 correspondences has improved 13.72%, the throughput of system of mode 4 correspondences has improved 15.85%, and visual way 3,4 performances with respect to mode 1 have obvious lifting.

In the present embodiment, the back-off factor ξ that calculates can also be carried out normalization further, as be treated to percentage, correspondingly, the back-off factor after normalization be sent to terminal.After the back-off factor was carried out normalized, the back-off factor sum after the normalization of all carrier waves of terminal equaled 1.

In the present embodiment, when the back-off factor is set with reference to the priority of carrier wave, can the priority of each carrier wave be set according to the type of service of terminal carrier carrying, specific as follows:

When the carrier wave of terminal comprises following when at least a: the carrier wave that carries separately PUCCH; Or carry separately the carrier wave of PUSCH; Or the carrier wave of mixing carrying PUCCH and PUSCH; The priority of carrying separately the carrier wave of PUCCH is set to higher than the carrier wave that mixes carrying PUCCH and PUSCH, and the priority of the carrier wave of mixing carrying PUCCH and PUSCH is set to the priority higher than the carrier wave of independent carrying PUSCH.

For example, terminal is used 4 carrier waves, wherein carrier wave 1 carries the PUCCH channel, carrier wave 2 carrying PUSCH channels, carrier wave 3 carrying PUCCH channel and PUSCH channels, carrier wave 4 carrying PUCCH channels, the priority that carrier wave 1 and carrier wave 4 are set is equal and the highest, the priority that carrier wave 3 is set is taken second place, and the priority that carrier wave 2 is set is minimum.

504: the base station sends to terminal with the back-off factor that calculates;

Particularly, can by the existing signalling back-off factor, as by uplink authorization information UL Grant or TPC (Transmission Power Control, through-put power control signal), the back-off factor that calculates be sent to terminal.

505: after terminal is received the back-off factor of returning the base station, carry out back-off according to this back-off factor, flow process finishes.

The below illustrates respectively the concrete implementation of this step in two kinds of situation:

1) power amplifier of terminal is one

At this moment, 505 can specifically comprise: whether the second transmitting power sum of all carrier waves of terminal judges exceeds the maximum uplink transmission power of terminal, wherein, for arbitrary carrier wave, the second transmitting power is arranged, the second transmitting power of carrier wave is that network side is the minimum value between the maximum transmission power of the transmitting power of this carrier wave configuration and this carrier wave; If, terminal rated output rollback total amount, the back-off factor of each carrier wave of receiving is multiplied each other with this back-off total amount respectively, obtain back-off value corresponding to each carrier wave, back-off value and the second transmitting power corresponding according to this carrier wave on each carrier wave are carried out back-off; If not, need not carry out back-off.

Whether the second transmitting power sum of all carrier waves of terminal judges exceeds the maximum uplink transmission power of terminal, can specifically adopt following formula to judge:

$\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{10}^{P_i^{*}/10}\right)\≤{10}^{P_{\max }/10}$ (formula 7)

Wherein,

Be the second transmitting power of each carrier wave, the type of service of each carriers carry is not limit, and can comprise the PUSCH channel, PUCCH channel, or PUSCH and PUCCH mixed channel; p _maxBe the maximum uplink transmission power of terminal, i is the sequence number of carrier wave, and i=1 ..., N, representative has N carrier wave.

In the embodiment of the present invention, terminal rated output rollback total amount P _OffsetCan calculate according to the second transmitting power of each carrier wave and the maximum uplink transmission power of terminal, particularly, can equal the difference of the maximum transmission power of the summation of the second transmitting power of all carrier waves of terminal and terminal, for example, can carry out according to following formula:

$P_{\mathrm{offset}}=10\·{\log }_{10}\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{10}^{P_i^{*}/10}\right)-P_{\max }$ (formula 8)

Terminal is calculated back-off value q corresponding to each carrier wave _i, and the performance number P after back-off _i, can be specific as follows:

$P_i=P_i^{*}-q_i{=P}_i^{*}-{\mathrm{\ξ}}_i\·P_{\mathrm{offset}}$ (formula 9)

Wherein,

Be the second transmitting power of each carrier wave, ξ _iBe the back-off factor of i carrier wave, P _OffsetBe the back-off total amount.When not carrying out back-off,

In the present embodiment, the terminal of single PA structure can be as shown in Figure 6, and this terminal has 4 carrier waves, and the signal on 4 carrier waves is by a PA transmission.

In the present embodiment, if the base station is when the rated output rollback factor, priority with reference to carrier wave, in a plurality of carrier waves of terminal, the carrier wave priority of carrying PUCCH channel is high, and the carrier wave priority of carrying PUCCH and PUSCH mixed channel is taken second place, and the carrier wave priority of carrying PUSCH channel is minimum, thereby guarantee the power of the carrier wave of preferential rollback carrying PUSCH channel, to guarantee the transmission of PUCCH channel as far as possible.

2) power amplifier of terminal is a plurality of

At this moment, 505 can specifically comprise:

Whether all power amplifiers all satisfy PA to terminal judges _iBe less than or equal to PA _Imax, PA wherein _iBe the summation of the second transmitting power of all carrier waves on i power amplifier, PA _ImaxBe the maximum transmission power of i power amplifier, i=1 ..., Y, Y are the quantity of the PA of terminal;

If the determination result is NO, terminal is calculated and is satisfied PA _i＞PA _ImaxThe first adjusted value of the first power amplifier, the first adjusted value is the difference of the summation of the second transmitting power of all carrier waves on the maximum transmission power of the first power amplifier and the first power amplifier, and the maximum transmission power of the first power amplifier is adjusted into the summation of the second transmitting power of all carrier waves on the first amplifier;

Terminal is lowered and is satisfied PA _i＜PA _ImaxThe maximum transmission power of the second power amplifier, the total amount that the second power amplifier maximum transmission power reduces equals the first adjusted value of the first power amplifier.

In the present embodiment, satisfy PA _i＞PA _ImaxThe first power amplifier can be one, also can for a plurality of, when being a plurality of, calculate the first adjusted value of oneself for each first power amplifier, thereby obtain a plurality of adjusted values.Correspondingly, satisfy PA _i＜PA _ImaxThe second power amplifier can be one, also can be for a plurality of, if a plurality of the second power amplifiers are arranged, when lowering the maximum transmission power of the second power amplifier, all or part of the second power amplifier that can choose is wherein lowered, as long as the downward total amount of the second amplifier that assurance is lowered equals the first adjusted value, if the first adjusted value of this moment is also a plurality of, equal all first adjusted value sums as long as guarantee to lower total amount, specifically adopt which kind of mode to realize, the embodiment of the present invention is not specifically limited.

In the present embodiment, calculate the first adjusted value and the maximum upper limit of PA is adjusted between the summation of the second transmitting power of upper all carrier waves of this PA and there is no specific execution sequence, when set-up procedure was carried out before calculation procedure, the maximum transmission power that uses in calculation procedure was the maximum transmission power before adjusting.

In the present embodiment, the terminal of many PA structure can be as shown in Figure 7, and this terminal has 4 carrier waves, and wherein, the signal on carrier wave 1 and 2 transmits by PA1, and the signal on carrier wave 3 and 4 transmits by PA2.Illustrate as follows with Fig. 7:

If P ₁+ P ₂+ P ₃+ P ₄≤ P _Cmax, judge whether P ₁+ P ₂＞PA _1max ^*And P ₃+ P ₄≤ PA _2max ^*, if so, with the maximum uplink transmission power PA of PA1 _1max ^*Be revised as the uplink transmission power P of the first amplifier ₁+ P ₂, and calculate difference offset1=P ₁+ P ₂-PA _1max ^*, the maximum uplink transmission power of PA2 is revised as PA _2max ^*=PA _2max ^*-offset1 namely deducts this difference on original basis.Terminal is heightened by the upper limit of the PA that will transfinite, and the upper limit of the PA that do not transfinite is turned down, and can guarantee that the power of terminal does not transfinite.Correspondingly, terminal is consistent for making the parameter in terminal and base station after adjusting the upper limit of PA, and terminal also needs the reporting parameters after changing to the base station, and the base station receives that rear renewal preserves.

In the present embodiment, get the PHR of each carrier wave when network side after, if terminal power transfinites, the base station can be distributed resource according to the type of service of carrying on each carrier wave and adjusts, as speed of suitable reduction NRTT (Not Real-Time Traffic, non-real-time service data) etc.

In the present embodiment, when terminal transmitter is single PA, PA maximum transmission power PA _MAXEqual the maximum uplink transmission power P of terminal _CMAXWhen terminal transmitter is a plurality of PA, PA maximum transmission power PA _MAX ^*Can by network side calculate and dynamic-configuration to terminal.

Need to prove: in the method that above-described embodiment 4 provides, during the back-off factor of terminal each carrier wave in calculating a plurality of carrier waves, the account form that the network equipment that concrete account form and the present embodiment provide is used when the rated output factor is identical, different is, the p that use when the rated output factor base station _iBe the statistical value of the actual uplink transmitting power of each carrier wave, and the p that terminal is used when the rated output factor _iActual uplink transmitting power for each carrier wave.

The said method that the present embodiment provides, the base station is when determining to need to adjust the power of terminal, calculate the back-off factor and send to terminal according to carrier information, make terminal to carry out back-off according to this back-off factor, realized the back-off according to the carrier information control terminal, for the back-off of terminal under the application scenarios of multicarrier in the LTE-A system provides a clearly solution.In addition, the method also provides the back-off factor that how dynamically to generate each carrier wave, and when terminal power transfinites, under single PA structure/many PA structure under, the solution how power between control channel and shared channel distributes, better match channels and disturbance regime are taken into account channel that carrier wave carries and the priority of type of service, and back-off is down to minimum on the impact of system.Said method can be applied in the power control of any multicarrier scene.

Embodiment 6

Referring to Fig. 8, the present embodiment provides a kind of network equipment, comprising:

Acquisition module 801, for the carrier information of a plurality of carrier waves that obtain terminal, this carrier information comprises priority β and/or channel quality information;

computing module 802, be used for when needs are adjusted the transmitting power of a plurality of carrier waves, priority β and/or channel quality information according to each carrier wave in a plurality of carrier waves, calculate the back-off factor ξ of each carrier wave in a plurality of carrier waves, back-off factor ξ one of meets the following conditions or its combination in any: the back-off factor ξ of the carrier wave that in a plurality of carrier waves, channel quality is higher is less, the back-off factor ξ of the carrier wave that a plurality of carrier wave medium priority β are higher is less, and terminal adjust after the transmitting power of a plurality of carrier waves the throughput total amount of a plurality of carrier waves according to power factor ξ maximum,

Sending module 803 is used for back-off factor ξ is sent to terminal, makes terminal can adjust according to the back-off factor ξ transmitting power of a plurality of carrier waves.

In the present embodiment, the network equipment further can also comprise determination module, be used for determining to need to adjust the transmitting power of a plurality of carrier waves, thereby computing module 802 can calculate according to definite result of determination module.

In the present embodiment, this determination module is specifically as follows: receive the power remaining space information that described terminal sends, described power clearance spaces information is for the difference of the maximum transmission power of the first transmitting power that represents described terminal and described terminal, and described the first transmitting power is that the described network equipment is the transmitting power of described terminal configuration; Determine the actual emission power of described terminal according to described power remaining space information; When the difference of the maximum transmission power of the actual emission power of described terminal and described terminal is less than or equal to threshold value, determine to need to adjust the transmitting power of described a plurality of carrier waves.

Perhaps this determination module is specifically as follows: when the power that gets described terminal transmission is adjusted indication information, determine to need adjust the transmitting power of described a plurality of carrier waves, described power is adjusted indication information and is sent to network side when the difference of the maximum transmission power of the actual emission power of described terminal and described terminal is less than or equal to threshold value by described terminal.

In the present embodiment, computing module 802 can comprise with one of lower unit:

The first computing unit, if being used for the priority β of carrier wave is determined by the service quality QoS of the business of carriers carry and/or the channel of carriers carry, in a plurality of carrier waves, the back-off factor ξ of each carrier wave calculates according to ξ=N/ β+M, wherein, N and M are constant, and only carry the priority of the priority of the carrier wave of upper physical limit control channel PUCCH＞carry the simultaneously carrier wave of PUCCH and upper physical limit shared channel PUSCH＞only the carry priority of the carrier wave of PUSCH;

The second computing unit, if be used for path gain g and/or interference noise total amount I that channel quality information comprises carrier wave, in a plurality of carrier waves, the back-off factor ξ of each carrier wave calculates according to ξ=P/ η+Q, and wherein P and Q are constant, η is g, any one in I and g*I;

the 3rd computing unit, if being used for the priority β of carrier wave is determined by the QoS of the business of carriers carry and/or the channel of carriers carry, and channel quality information comprises path gain g and/or the interference noise total amount I of carrier wave, in a plurality of carrier waves, the back-off factor ξ of each carrier wave calculates according to ξ=S/ (β * η)+T or ξ=N/ β+P/ η+W, S wherein, T, N, P, W is constant, η is g, any one in I and g*I, and only carry the priority of the priority of the carrier wave of PUCCH＞carry the simultaneously carrier wave of PUCCH and PUSCH＞only the carry priority of the carrier wave of PUSCH,

The 4th computing unit, if be used for path gain g and interference noise total amount I that channel quality information comprises carrier wave, in a plurality of carrier waves, the back-off factor ξ of each carrier wave calculates according to maximum transmission power and the path gain g of the statistical value of the actual emission power of carrier wave, interference noise total amount I, terminal.

Wherein, the 4th computing unit can comprise:

The first computation subunit is used at a plurality of carrier waves, the back-off factor ξ of each carrier wave according to Calculate, wherein, ξ _iBe the back-off factor of i carrier wave, p _iBe the statistical value of the actual emission power of i carrier wave, I _iBe the interference noise total amount of i carrier wave, p _maxBe the maximum transmission power of terminal, q _maxBe the maximum of the back-off of each carrier wave in a plurality of carrier waves, g _iBe the path gain of i carrier wave, q _iBe the back-off value of i carrier wave, X is the number of carriers of a plurality of carrier waves, i=1 ..., X.

Further, above-mentioned the 4th computing unit can also comprise:

The second computation subunit is used for after the first computation subunit is calculated the back-off factor of each carrier wave, if the back-off factor ξ of any one carrier wave in a plurality of carrier wave _iStatistical value p greater than the actual emission power of carrier wave _i, make path gain g _jThe back-off factor ξ of minimum carrier wave j _j=p _j, and the first computation subunit as per advice

The back-off factor ξ of other carrier waves of calculating except carrier wave j is until the back-off factor ξ of each carrier wave in a plurality of carrier wave _iAll be less than or equal to the statistical value p of the actual emission power of carrier wave _i, wherein, j is greater than or equal to 1 and be less than or equal to the integer of X.

In the present embodiment, computing module 802 can also be used for back-off factor ξ is carried out normalization; Correspondingly, sending module 803 is used for the back-off factor after normalization is sent to terminal.

The above-mentioned network equipment that the present embodiment provides, can be specifically base station, relay station or its other have base station functions the network equipment, as NodeB or eNodeB etc., belong to same design with embodiment of the method, it can be used for implementing the method for above-described embodiment 1 and 5, repeats no more here.

Referring to Fig. 9, the present embodiment also provides the another kind of network equipment, comprising:

Acquisition module 901, for the carrier information of a plurality of carrier waves that obtain terminal, this carrier information comprises priority β and/or channel quality information;

Module 902 is set, be used for the carrier information according to a plurality of carrier waves, set the maximum transmission power of each carrier wave in a plurality of carrier waves, make the maximum transmission power of the higher carrier wave of priority β larger, perhaps make the maximum transmission power of the higher carrier wave of channel quality larger;

Sending module 903 is notified to terminal for the maximum transmission power of each carrier wave that module 902 settings will be set.

The network equipment shown in Figure 9, can be specifically base station, relay station or its other have base station functions the network equipment, as NodeB or eNodeB etc., belong to same design with embodiment of the method, the method that it can be used for implementing above-described embodiment 2 repeats no more here.

The above-mentioned network equipment that the present embodiment provides, after the power of a plurality of carrier waves of determining needs adjustment terminal, calculate the back-off factor according to carrier information, and send the back-off factor to terminal, make terminal to carry out back-off according to this back-off factor, realized the back-off according to the carrier information control terminal, for the back-off of terminal under the application scenarios of multicarrier in the LTE-A system provides a clearly solution.In addition, the back-off factor that how dynamically to generate each carrier wave also is provided, and when terminal power transfinites, under single PA structure/many PA structure under, the solution how power between control channel and shared channel distributes, better match channels and disturbance regime are taken into account channel that carrier wave carries and the priority of type of service, and back-off is down to minimum on the impact of system.

Embodiment 7

Referring to Figure 10, the present embodiment provides a kind of terminal, comprising:

Receiver module 1001, be used for to receive the back-off factor of a plurality of carrier waves of the terminal that the network equipment sends, this back-off factor is calculated by the carrier information of the network equipment according to a plurality of carrier waves, and this carrier information comprises priority β and/or channel quality information;

Adjusting module 1002 if be used for back-off factor representation back-off value, is adjusted the transmitting power of a plurality of carrier waves according to the back-off factor; Perhaps, if the back-off factor through normalized, according to back-off factor rated output rollback value, and is adjusted the transmitting power of a plurality of carrier waves according to the back-off value.

In the present embodiment, above-mentioned terminal can also comprise:

Judge module, be used for judging that the summation of the second transmitting power of a plurality of all carrier waves of carrier wave is whether greater than the maximum transmission power of terminal, wherein, for arbitrary carrier wave, the second transmitting power of carrier wave is that the network equipment is the minimum value between the maximum transmission power of the transmitting power of this carrier wave configuration and this carrier wave; If judgment result is that to be, trigger adjusting module and carry out the step of adjusting the transmitting power of a plurality of carrier waves according to the back-off factor, perhaps carry out the step according to back-off factor rated output rollback value.

In the present embodiment, adjusting module 1002 can comprise:

The first adjustment unit, if be used for the back-off factor through normalized, rated output rollback total amount, back-off total amount are the difference of the maximum transmission power of the summation of the second transmitting power of all carrier waves in a plurality of carrier waves and terminal; The back-off factor of each carrier wave in a plurality of carrier waves is multiplied each other with the back-off total amount respectively, obtain the back-off value of each carrier wave; According to back-off value and second transmitting power of each carrier wave, each carrier wave is carried out the power adjustment.

Further, adjusting module 1002 can also be used for:

If the power amplifier of terminal is a plurality of, and after adjusting the transmitting power of a plurality of carrier waves, judge whether that all power amplifiers all satisfy PA _iBe less than or equal to PA _Imax, PA wherein _iBe the summation of the second transmitting power of all carrier waves on i power amplifier, PA _ImaxBe the maximum transmission power of i power amplifier, i=1 ..., Y, Y are the quantity of the PA of terminal; If the determination result is NO, calculate and satisfy PA _i＞PA _ImaxThe first adjusted value of the first power amplifier, the first adjusted value is the difference of the summation of the second transmitting power of all carrier waves on the maximum transmission power of the first power amplifier and the first power amplifier, and the maximum transmission power of the first power amplifier is adjusted into the summation of the second transmitting power of all carrier waves on the first amplifier; PA is satisfied in downward _i＜PA _ImaxThe maximum transmission power of the second power amplifier, the total amount that the second power amplifier maximum transmission power reduces equals the first adjusted value of the first power amplifier.

Above-mentioned terminal and embodiment of the method that the present embodiment provides belong to same design, can be used for implementing the method in above-described embodiment 3 and 5, repeat no more herein.

Referring to Figure 11, the present embodiment also provides another kind of terminal, comprising:

Acquisition module 1101, for the carrier information of a plurality of carrier waves that obtain the terminal use, this carrier information comprises priority β and/or channel quality information;

computing module 1102, be used for when terminal is determined to need to adjust the transmitting power of a plurality of carrier waves, priority β and/or channel quality information according to each carrier wave in a plurality of carrier waves, calculate the back-off factor ξ of each carrier wave in a plurality of carrier waves, back-off factor ξ one of meets the following conditions or its combination in any: the back-off factor ξ of the carrier wave that in a plurality of carrier waves, channel quality is higher is less, the back-off factor ξ of the carrier wave that a plurality of carrier wave medium priority β are higher is less, and terminal adjust after the transmitting power of a plurality of carrier waves the throughput total amount of a plurality of carrier waves according to power factor ξ maximum,

Adjusting module 1103 is used for the transmitting power according to a plurality of carrier waves of back-off factor ξ adjustment.

Terminal shown in Figure 11 and embodiment of the method belong to same design, can be used for implementing the method in above-described embodiment 4, repeat no more herein.

The above-mentioned terminal that the present embodiment provides, by obtaining carrier information and calculating the back-off factor, carry out back-off according to this back-off factor, realized the back-off according to the carrier information control terminal, for the back-off of terminal under the application scenarios of multicarrier in the LTE-A system provides a clearly solution.In addition, the back-off factor that how dynamically to generate each carrier wave also is provided, and when terminal power transfinites, under single PA structure/many PA structure under, the solution how power between control channel and shared channel distributes, better match channels and disturbance regime are taken into account channel that carrier wave carries and the priority of type of service, and back-off is down to minimum on the impact of system.

Need to prove at last, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to complete by computer program, described program can be stored in a computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (ROM) or random store-memory body (RAM) etc.

Each functional unit in the embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in a computer read/write memory medium.The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.Above-mentioned each device or system can carry out the method in correlation method embodiment.

The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (18)

1. a Poewr control method, is characterized in that, described method comprises:

The network equipment obtains the carrier information of a plurality of carrier waves of terminal, and described carrier information comprises priority β and/or channel quality information;

the described network equipment is when determining to need to adjust the transmitting power of described a plurality of carrier waves, priority β and/or channel quality information according to each carrier wave in described a plurality of carrier waves, calculate the back-off factor ξ of each carrier wave in described a plurality of carrier wave, described back-off factor ξ one of meets the following conditions or its combination in any: the back-off factor ξ of the carrier wave that in described a plurality of carrier waves, channel quality is higher is less, the back-off factor ξ of the carrier wave that described a plurality of carrier wave medium priority β is higher is less, and described terminal adjust after the transmitting power of described a plurality of carrier waves the throughput total amount of described a plurality of carrier waves according to described back-off factor ξ maximum,

The described network equipment sends to described terminal with described back-off factor ξ, makes described terminal can adjust according to the described back-off factor ξ transmitting power of described a plurality of carrier waves;

Wherein, described priority β and/or channel quality information according to each carrier wave in described a plurality of carrier waves calculate the back-off factor ξ of each carrier wave in described a plurality of carrier wave, comprise one of following:

If the priority β of carrier wave is determined by the service quality QoS of the business of this carriers carry and/or the channel of this carriers carry, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=N/ β+M, wherein, N and M are constant, and only carry the priority of the priority of the carrier wave of Physical Uplink Control Channel PUCCH＞carry the simultaneously carrier wave of PUCCH and Physical Uplink Shared Channel PUSCH＞only the carry priority of the carrier wave of PUSCH;

If described channel quality information comprises path gain g and/or the interference noise total amount I of carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=P/ η+Q, and wherein P and Q are constant, and η is any one in g, I and g*I;

if the priority β of carrier wave is determined by the QoS of the business of this carriers carry and/or the channel of this carriers carry, and described channel quality information comprises path gain g and/or the interference noise total amount I of carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=S/ (β * η)+T or ξ=N/ β+P/ η+W, S wherein, T, N, P, W is constant, η is g, any one in I and g*I, and only carry the priority of the priority of the carrier wave of PUCCH＞carry the simultaneously carrier wave of PUCCH and PUSCH＞only the carry priority of the carrier wave of PUSCH,

If described channel quality information comprises path gain g and the interference noise total amount I of carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to maximum transmission power and the path gain g of the statistical value of the actual emission power of described carrier wave, interference noise total amount I, described terminal.

2. method according to claim 1, is characterized in that, at least one value in described N, P and S is 1; At least one value in described M, Q, T and W is 0.

3. method according to claim 1, it is characterized in that, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to maximum transmission power and the path gain g of the statistical value of the actual emission power of described carrier wave, interference noise total amount I, described terminal, comprising:

In described a plurality of carrier wave, the back-off factor ξ of each carrier wave according to

Calculate, wherein, ξ _iBe the back-off factor of i carrier wave, q _iBe the back-off value of i carrier wave, p _iBe the statistical value of the actual emission power of i carrier wave, I _iBe the interference noise total amount of i carrier wave, p _maxBe the maximum transmission power of described terminal, q _maxBe the maximum of the back-off value of each carrier wave in described a plurality of carrier waves, g _iBe the path gain of i carrier wave, X is the number of carriers of described a plurality of carrier waves, i=1 ..., X.

4. method according to claim 3, it is characterized in that, after in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculated according to the maximum transmission power of the statistical value of the actual emission power of described carrier wave, interference noise total amount I, described terminal and path gain g, described method further comprised:

If the back-off factor ξ of any one carrier wave in described a plurality of carrier wave _iStatistical value p greater than the actual emission power of described carrier wave _i, make path gain g _jThe back-off factor ξ of minimum carrier wave j _j=p _j, and according to

The back-off factor ξ of other carrier waves of calculating except carrier wave j is until the back-off factor ξ of each carrier wave in described a plurality of carrier wave _iAll be less than or equal to the statistical value p of the actual emission power of described carrier wave _i, wherein, j is for more than or equal to 1 and be less than or equal to the integer of X.

5. method according to claim 1, is characterized in that, described definite transmitting power that needs to adjust described a plurality of carrier waves comprises:

Receive the power remaining space information that described terminal sends, described power remaining space information is for the difference of the maximum transmission power of the first transmitting power that represents described terminal and described terminal, and described the first transmitting power is that the described network equipment is the transmitting power of described terminal configuration; Determine the actual emission power of described terminal according to described power remaining space information; When the difference of the maximum transmission power of the actual emission power of described terminal and described terminal is less than or equal to threshold value, determine to need to adjust the transmitting power of described a plurality of carrier waves;

Perhaps comprise:

When the power that gets described terminal transmission is adjusted indication information, determine to need adjust the transmitting power of described a plurality of carrier waves, described power is adjusted indication information and is sent to network side when the difference of the maximum transmission power of the actual emission power of described terminal and described terminal is less than or equal to threshold value by described terminal.

6. the described method of arbitrary claim according to claim 1 to 5, is characterized in that, described back-off factor ξ is sent to described terminal, comprising:

By uplink authorization information or through-put power control signal, described back-off factor ξ is sent to described terminal.

7. the described method of arbitrary claim according to claim 1 to 5, is characterized in that, before described back-off factor ξ was sent to described terminal, described method further comprised: described back-off factor ξ is carried out normalization;

Correspondingly, described back-off factor ξ is sent to described terminal, comprising: the back-off factor after normalization is sent to described terminal.

8. a Poewr control method, is characterized in that, described method comprises:

The back-off factor of a plurality of carrier waves of the described terminal that the terminal reception network equipment sends, the described back-off factor is calculated by the carrier information of the described network equipment according to described a plurality of carrier waves, and described carrier information comprises priority β and/or channel quality information;

If described back-off factor representation back-off value, described terminal is adjusted the transmitting power of described a plurality of carrier waves according to the described back-off factor; Perhaps,

If the described back-off factor is through normalized, described terminal is according to described back-off factor rated output rollback value, and adjusts the transmitting power of described a plurality of carrier waves according to described back-off value;

Wherein, described terminal also comprises before adjusting the transmitting power of described a plurality of carrier waves:

In the described a plurality of carrier waves of described terminal judges, whether the summation of the second transmitting power of all carrier waves is greater than the maximum transmission power of described terminal, wherein, for arbitrary carrier wave, to be the described network equipment be the minimum value between the maximum transmission power of the transmitting power of this carrier wave configuration and this carrier wave to the second transmitting power of carrier wave;

If judgment result is that to be, described terminal is carried out the step of adjusting the transmitting power of described a plurality of carrier waves according to the described back-off factor, perhaps carries out the step according to described back-off factor rated output rollback value.

9. method according to claim 8, is characterized in that, described terminal is according to described back-off factor rated output rollback value, and adjust the transmitting power of described a plurality of carrier waves according to described back-off value, comprising:

Described terminal rated output rollback total amount, described back-off total amount are the difference of the maximum transmission power of the summation of the second transmitting power of all carrier waves in described a plurality of carrier wave and described terminal;

Described terminal multiplies each other the back-off factor of each carrier wave in described a plurality of carrier waves respectively with described back-off total amount, obtain the back-off value of described each carrier wave;

Described terminal is carried out the power adjustment according to back-off value and second transmitting power of described each carrier wave to described each carrier wave.

10. method according to claim 9, is characterized in that, if the power amplifier of described terminal is a plurality of, after described terminal is adjusted the transmitting power of described a plurality of carrier waves, also comprises:

Whether all power amplifiers all satisfy PA to described terminal judges _iBe less than or equal to PA _Imax, PA wherein _iBe the summation of the second transmitting power of all carrier waves on i power amplifier, PA _ImaxBe the maximum transmission power of i power amplifier, i=1 ..., Y, described Y are the quantity of the power amplifier of described terminal;

If the determination result is NO, described terminal is calculated and is satisfied PA _i＞PA _ImaxThe first adjusted value of the first power amplifier, the difference of the summation of the second transmitting power of all carrier waves on the maximum transmission power that described the first adjusted value is described the first power amplifier and described the first power amplifier, and the maximum transmission power of described the first power amplifier is adjusted into the summation of the second transmitting power of all carrier waves on described the first power amplifier;

Described terminal is lowered and is satisfied PA _i＜PA _ImaxThe maximum transmission power of the second power amplifier, the total amount that described the second power amplifier maximum transmission power reduces equals the first adjusted value of described the first power amplifier.

11. method according to claim 8 is characterized in that, before the back-off factor of a plurality of carrier waves of the described terminal that the terminal reception network equipment sends, also comprises:

Described terminal is to described network equipment transmitted power remaining space information, so that the described network equipment sends the described back-off factor according to described power remaining space information, described power remaining space information is for the difference of the maximum transmission power of the first transmitting power that represents described terminal and described terminal, and described the first transmitting power is that the described network equipment is the transmitting power of described terminal configuration;

Perhaps, when described terminal is less than or equal to threshold value in the difference of the maximum transmission power of the first transmitting power of described terminal and described terminal, adjust indication information to described network equipment transmitted power, so that the described network equipment described back-off factor of transmission after receiving described power to adjust indication information, wherein, described the first transmitting power is that the described network equipment is the transmitting power of described terminal configuration.

12. a network equipment is characterized in that, the described network equipment comprises:

Acquisition module, for the carrier information of a plurality of carrier waves that obtain terminal, described carrier information comprises priority β and/or channel quality information;

computing module, be used for when needs are adjusted the transmitting power of described a plurality of carrier waves, priority β and/or channel quality information according to each carrier wave in described a plurality of carrier waves, calculate the back-off factor ξ of each carrier wave in described a plurality of carrier wave, described back-off factor ξ one of meets the following conditions or its combination in any: the back-off factor ξ of the carrier wave that in described a plurality of carrier waves, channel quality is higher is less, the back-off factor ξ of the carrier wave that described a plurality of carrier wave medium priority β is higher is less, and described terminal adjust after the transmitting power of described a plurality of carrier waves the throughput total amount of described a plurality of carrier waves according to described back-off factor ξ maximum,

Sending module is used for described back-off factor ξ is sent to described terminal, makes described terminal can adjust according to the described back-off factor ξ transmitting power of described a plurality of carrier waves;

Wherein, described computing module comprises with one of lower unit:

The first computing unit, if being used for the priority β of carrier wave is determined by the service quality QoS of the business of carriers carry and/or the channel of carriers carry, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=N/ β+M, wherein, N and M are constant, and only carry the priority of the priority of the carrier wave of Physical Uplink Control Channel PUCCH＞carry the simultaneously carrier wave of PUCCH and Physical Uplink Shared Channel PUSCH＞only the carry priority of the carrier wave of PUSCH;

The second computing unit, if be used for path gain g and/or interference noise total amount I that described channel quality information comprises carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=P/ η+Q, and wherein P and Q are constant, and η is any one in g, I and g*I;

the 3rd computing unit, if being used for the priority β of carrier wave is determined by the QoS of the business of carriers carry and/or the channel of carriers carry, and described channel quality information comprises path gain g and/or the interference noise total amount I of carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to ξ=S/ (β * η)+T or ξ=N/ β+P/ η+W, S wherein, T, N, P, W is constant, η is g, any one in I and g*I, and only carry the priority of the priority of the carrier wave of PUCCH＞carry the simultaneously carrier wave of PUCCH and PUSCH＞only the carry priority of the carrier wave of PUSCH,

The 4th computing unit, if be used for path gain g and interference noise total amount I that described channel quality information comprises carrier wave, in described a plurality of carrier wave, the back-off factor ξ of each carrier wave calculates according to maximum transmission power and the path gain g of the statistical value of the actual emission power of described carrier wave, interference noise total amount I, described terminal.

13. the network equipment according to claim 12 is characterized in that, described the 4th computing unit comprises:

The first computation subunit is used at described a plurality of carrier waves, the back-off factor ξ of each carrier wave according to

Calculate, wherein, ξ _iBe the back-off factor of i carrier wave, q _iBe the back-off value of i carrier wave, p _iBe the statistical value of the actual emission power of i carrier wave, I _iBe the interference noise total amount of i carrier wave, p _maxBe the maximum transmission power of described terminal, q _maxBe the maximum of the back-off of each carrier wave in described a plurality of carrier waves, g _iBe the path gain of i carrier wave, X is the number of carriers of described a plurality of carrier waves, i=1 ..., X.

14. the network equipment according to claim 13 is characterized in that, described the 4th computing unit also comprises:

The second computation subunit is used for after described the first computation subunit is calculated the back-off factor of each carrier wave, if the back-off factor ξ of any one carrier wave in described a plurality of carrier wave _iStatistical value p greater than the actual emission power of described carrier wave _i, make path gain g _jThe back-off factor ξ of minimum carrier wave j _j=p _j, and notify described the first computation subunit according to

The back-off factor ξ of other carrier waves of calculating except carrier wave j is until the back-off factor ξ of each carrier wave in described a plurality of carrier wave _iAll be less than or equal to the statistical value p of the actual emission power of described carrier wave _i, wherein, j is greater than or equal to 1 and be less than or equal to the integer of X.

15. according to claim 12 to the described network equipment of arbitrary claim in 14, it is characterized in that, described computing module also is used for described back-off factor ξ is carried out normalization; Correspondingly, described sending module is used for the back-off factor after normalization is sent to described terminal.

16. a terminal is characterized in that, described terminal comprises:

Receiver module, be used for to receive the back-off factor of a plurality of carrier waves of the described terminal that the network equipment sends, the described back-off factor is calculated by the carrier information of the described network equipment according to described a plurality of carrier waves, and described carrier information comprises priority β and/or channel quality information;

Adjusting module if be used for described back-off factor representation back-off value, is adjusted the transmitting power of described a plurality of carrier waves according to the described back-off factor; Perhaps, if the described back-off factor through normalized, according to described back-off factor rated output rollback value, and is adjusted the transmitting power of described a plurality of carrier waves according to described back-off value;

Wherein, described terminal also comprises:

Judge module, be used for judging that the summation of the second transmitting power of described a plurality of all carrier waves of carrier wave is whether greater than the maximum transmission power of described terminal, wherein, for arbitrary carrier wave, to be the described network equipment be the minimum value between the maximum transmission power of the transmitting power of this carrier wave configuration and this carrier wave to the second transmitting power of carrier wave; If judgment result is that to be, trigger described adjusting module and carry out the step of adjusting the transmitting power of described a plurality of carrier waves according to the described back-off factor, perhaps carry out the step according to described back-off factor rated output rollback value.

17. terminal according to claim 16 is characterized in that, described adjusting module comprises:

The first adjustment unit, if be used for the described back-off factor through normalized, rated output rollback total amount, described back-off total amount are the difference of the maximum transmission power of the summation of the second transmitting power of all carrier waves in described a plurality of carrier wave and described terminal; The back-off factor of each carrier wave in described a plurality of carrier waves is multiplied each other with described back-off total amount respectively, obtain the back-off value of described each carrier wave; According to back-off value and second transmitting power of described each carrier wave, described each carrier wave is carried out the power adjustment.

18. terminal according to claim 17 is characterized in that, described adjusting module also is used for:

If the power amplifier of described terminal is a plurality of, and after adjusting the transmitting power of described a plurality of carrier waves, judge whether that all power amplifiers all satisfy PA _iBe less than or equal to PA _Imax, PA wherein _iBe the summation of the second transmitting power of all carrier waves on i power amplifier, PA _ImaxBe the maximum transmission power of i power amplifier, i=1 ..., Y, described Y are the quantity of the power amplifier of described terminal; If the determination result is NO, calculate and satisfy PA _i＞PA _ImaxThe first adjusted value of the first power amplifier, the difference of the summation of the second transmitting power of all carrier waves on the maximum transmission power that described the first adjusted value is described the first power amplifier and described the first power amplifier, and the maximum transmission power of described the first power amplifier is adjusted into the summation of the second transmitting power of all carrier waves on described the first power amplifier; PA is satisfied in downward _i＜PA _ImaxThe maximum transmission power of the second power amplifier, the total amount that described the second power amplifier maximum transmission power reduces equals the first adjusted value of described the first power amplifier.

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