WO2017088835A1

WO2017088835A1 - Power distribution method and device

Info

Publication number: WO2017088835A1
Application number: PCT/CN2016/107459
Authority: WO
Inventors: 谢向文
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-11-27
Filing date: 2016-11-28
Publication date: 2017-06-01
Also published as: CN106817760A; CN106817760B

Abstract

Disclosed in the present invention is a power distribution method. The power distribution method comprises: acquiring an uplink physical resource block (PRB) idleness rate on each of component carriers in a current detection period and an uplink transmission efficiency of user equipment (UE) on each of the component carriers; determining, according to each of the uplink transmission rates and the uplink PRB idleness rates corresponding thereto, a power distribution factor of the UE on each of the component carriers; and determining and allocating, according to each of the power distribution factors and a total transmitting power of the UE, a maximum transmitting power for the UE on each of the component carriers. Also disclosed is a power distribution device. The present invention can solve the problem of decreased working performance of UE due to power reduction.

Description

Power distribution method and device

The present application is based on a Chinese patent application filed on Jan. 27, 2015, filed on Jan. 27, 2015, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a power allocation method and apparatus.

Background technique

User equipment (User Equipment, UE for short) in CA (Carrier Aggregation) in a Long Term Evolution (LTE) communication system supporting multiple carriers and a Long Term Evolution (LTE-A) communication system. In the case of a carrier aggregation scenario, it is instructed to perform uplink transmission on multiple CCs (Component Carriers) at the same uplink subframe time. Since the total power of the UE is limited, the UE scenario must appear under the UE scenario. The sum of the transmit powers calculated by the power parameters indicated by the CC exceeds the maximum transmit power of the terminal, especially in the macro station models such as Massive MIMO. At this time, the UE needs to reduce the transmission power of the multiple CCs according to the protocol according to the protocol, so that the sum of the transmission powers of the multiple CCs does not exceed the maximum transmission power of the terminal. For example, LTE-A adopts a scheme of performing hierarchical power reduction according to channel type and transmitted information. For example, when multiple PUSCHs are simultaneously transmitted and the transmission power exceeds the maximum transmission power configured by the terminal, the transmission power of multiple PUSCHs is multiplied by the same. The power reduction factor method is used to reduce the transmission power of multiple PUSCHs in an equal proportion to ensure that the uplink transmission power does not exceed the maximum transmission power configured by the terminal; and, for example, multiple PUSCHs and PUCCHs are simultaneously transmitted and the transmission power exceeds the maximum transmission configured by the terminal. In power, the transmit power of the PUCCH is first ensured, and then the transmit power of multiple PUSCHs is multiplied by the same power reduction factor to ensure that the uplink transmit power does not exceed the terminal configuration. Maximum transmit power. However, after the UE reduces the transmission power of each CC according to the protocol, the scheduling result of each CC is no longer suitable, and the uplink packet error rate increases, the uplink transmission efficiency, the SRS demodulation performance, the downlink beamforming, and the null. The performance of the sub-multiplexing will be seriously degraded.

Summary of the invention

The main object of the present invention is to provide a power allocation method and apparatus, aiming at solving a power cancellation of a UE. Reduce the problem of degraded performance.

To achieve the above object, the present invention provides a power allocation method, where the power allocation method includes:

Obtaining an uplink physical resource block PRB idle rate of each component carrier in the current detection period and an uplink transmission efficiency of the user equipment UE on each component carrier;

Determining, according to each of the uplink transmission efficiency and the corresponding uplink PRB idle rate, a power allocation factor of the UE on each component carrier;

And determining, according to each of the power allocation factors and the total transmit power of the UE, the maximum transmit power of each component carrier for the UE.

Preferably, the acquiring uplink transmission efficiency of the user equipment UE on each component carrier in the current detection period includes:

Measuring a signal to interference and noise ratio SINR value of the UE on each component carrier, and receiving a power headroom report PHR of each component carrier reported by the UE;

Determining, according to each of the SINR measurement values and the PHR value carried by the corresponding PHR, the SINR value of the single PRB of the UE on each component carrier, and using the SINR value of each of the single PRBs as the UE in each component. The uplink transmission efficiency of the carrier.

Preferably, the step of determining a power allocation factor of the UE on each component carrier according to each of the uplink transmission efficiency and its corresponding uplink PRB idle rate includes:

Calculating a product of each of the uplink transmission efficiency and its corresponding uplink PRB idle rate, and calculating a sum of each of the products;

The ratio of each of the products and the sum value is used as a power allocation factor of the UE in each component carrier.

Preferably, before the step of determining, according to each of the power allocation factors and the total transmit power of the UE, the maximum transmit power of each component carrier for the UE, the method further includes:

Acquiring and correcting each of the power allocation factors according to a service type of each component carrier of the UE;

Upon completion of the correction, the step of determining and configuring the maximum transmit power of each component carrier for the UE according to each of the power allocation factors and the total transmit power of the UE is performed.

Preferably, when receiving the PHR reported by the UE, the following steps are also performed:

Using the saved downlink loss value of each component carrier in the component, respectively, smoothing the current downlink path loss value of the UE derived by the corresponding PHR;

The downlink path loss values after the smoothing process are saved, and the check is adjusted according to each downlink path loss value after the smoothing process. Measuring cycle.

Preferably, the power allocation method further includes:

The detection period is adjusted according to an uplink PRB idle rate of each component carrier in the current detection period.

In addition, in order to achieve the above object, the present invention also provides a power distribution device, the power distribution device comprising:

An acquiring module, configured to acquire an uplink physical resource block PRB idle rate of each component carrier in a current detection period, and an uplink transmission efficiency of the user equipment UE in each component carrier;

a determining module, configured to determine, according to each of the uplink transmission efficiency and a corresponding uplink PRB idle rate, a power allocation factor of the UE on each component carrier;

And a configuration module, configured to determine, according to each of the power allocation factors and the total transmit power of the UE, a maximum transmit power of each component carrier for the UE.

Preferably, the acquiring module is further configured to measure a signal to interference and noise ratio SINR value of the UE on each component carrier, and receive a power headroom report PHR of each component carrier reported by the UE; and according to each The SINR measurement value and the PHR value carried by the corresponding PHR are used to determine the SINR value of the single PRB of the UE on each component carrier, and the SINR values of the single PRBs are respectively used as the uplink transmission of the UE on each component carrier. effectiveness.

Preferably, the determining module is further configured to calculate a product of each of the uplink transmission efficiency and its corresponding uplink PRB idle rate, and calculate a sum value of each of the products; and compare a ratio of each of the products to the sum value The power allocation factor of each UE in each component carrier is respectively used.

Preferably, the power distribution apparatus further includes a correction module, configured to acquire and correct each of the power allocation factors according to a service type of each component carrier of the UE;

The configuration module is further configured to determine, according to each of the power allocation factors and the total transmit power of the UE, a maximum transmit power of each component carrier according to each of the power allocation factors and the UE.

Preferably, the power distribution apparatus further includes a first adjustment module, configured to: when receiving the PHR reported by the UE, use the saved downlink loss value of each component carrier of the UE, and respectively corresponding to the PHR And deriving the current downlink loss value of the UE to perform smoothing processing; and storing each downlink path loss value after the smoothing process, and adjusting the detection period according to each downlink path loss value after the smoothing process.

Preferably, the power distribution apparatus further includes a second adjustment module, configured to adjust the detection period according to an uplink PRB idle rate of each component carrier.

The power allocation method or device proposed by the present invention firstly according to the uplink of each component carrier in the current detection period a physical resource block PRB idle rate and an uplink transmission efficiency of the user equipment UE on each component carrier, determining a power allocation factor of the UE in each component carrier, and then according to each of the power allocation factors and the total transmit power of the UE, The UE determines and configures its maximum transmit power at each component carrier, so that when the UE schedules between component carriers, the sum of the expected transmit powers of the component carriers does not exceed its actual total transmit power, ie, no power is affected. In the limited case, the power consumption reduction is avoided, so that the present invention can solve the problem that the UE performs power reduction caused by power reduction.

DRAWINGS

1 is a schematic flow chart of a first embodiment of a power distribution method according to the present invention;

2 is a schematic diagram of functional modules of a first embodiment of a power distribution device according to the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present invention provides a power allocation method. Referring to FIG. 1, in a first embodiment of the power allocation method of the present invention, the power allocation method includes:

Step S10: Obtain an uplink physical resource block PRB idle rate of each component carrier in the current detection period and an uplink transmission efficiency of the user equipment UE on each component carrier.

The power allocation method provided in this embodiment can be applied to a base station in a communication system such as LTE (Long Term Evolution) and LTE-A (LTE-Advanced), for example, in the application of Massive MIMO. In the CA (Carrier Aggregation) macro base station, the base station configures the uplink transmit power between the component carriers for the UE (User Equipment) in advance, so that when the UE is scheduled on multiple component carriers at the same time, multiple components are used. The transmit power of the carrier does not exceed the total transmit power, thereby avoiding the problem that the UE performs power reduction and the performance is degraded.

In the embodiment, when the power allocation is performed, the uplink PRB (Physical Resource Block, the basic unit of the physical resource allocation of the air interface) of the component carriers in the current detection period is first obtained, and the user equipment UE is in each component carrier. Uplink transmission efficiency. Specifically, when acquiring the uplink transmission efficiency of the UE in each component carrier, calculating, by the UE, a SINR (Signal Interference Plus Noise Ratio) value converted to a single PRB, The SINR values of the single PRBs of the component carriers are respectively used as the uplink transmission efficiency of the UE on each component carrier.

It should be noted that the SINR value refers to the ratio of the strength of the received useful signal to the strength of the received interference signal (noise and interference), which can be simply understood as “signal to noise ratio”. In an actual engineering scenario, especially in a MIMO scenario, since it is unrealistic to accurately and timely estimate the channel matrix, and limited by the feedback channel, the feedback information may not be too much. Therefore, in the proposal of 3GPP, SINR is generally used as feedback information for control parameters of adaptive modulation.

Specifically, the SINR initially appears in multi-user detection, assuming that there are two users 1, 2, and two signals of the transmitting antenna (CDMA (Code Division Multiple Access) is code orthogonal, OFDM (Orthogonal Frequency Division Multiplexing) , Orthogonal Frequency Division Multiplexing) uses spectrum orthogonality, which is used to distribute different data to two users. User 1 receives the data sent by the transmitting antenna to itself. This is a useful signal, Signal is also received. The transmit antenna sends the data to User 2, which is the interference Interference, and of course the Noise Noise.

When the uplink PRB idle rate of each component carrier is acquired, the uplink PRB idle rate of the component carrier CC1 is calculated.

In this embodiment, the uplink PRB usage number Ucc1 of CC1 in the current detection period is counted, and the uplink PRB availability number Tcc1 of CC1 is counted, and the ratio of (Tcc1-Ucc1) to Tcc1 is used as the uplink PRB idle rate of CC1.

Step S20: Determine, according to each of the uplink transmission efficiency and the corresponding uplink PRB idle rate, a power allocation factor of the UE in each component carrier.

In this embodiment, after acquiring the uplink PRB idle rate of each component carrier and the uplink transmission efficiency of the UE on each component carrier, determining, according to each of the uplink transmission efficiency and the corresponding uplink PRB idle rate, the UE is in each The power allocation factor of the component carrier.

Specifically, calculating a product of each of the uplink transmission efficiency and its corresponding uplink PRB idle rate, and calculating a sum value of each of the products; and comparing a ratio of each of the products to the sum value as a component of the UE The power allocation factor of the carrier.

For example, the base station includes one primary component carrier PCC, two secondary component carriers SCC1 and SCC2, and the uplink PRB idle rates obtained by the base station to acquire SCC1, SCC2, and PCC are ULPrbUsage(1), ULPrbUsage(2), and ULPrbUsage(3), respectively. Obtaining uplink transmission efficiencies of the UE on SCC1, SCC2, and PCC are NormalizedUlSinr(1), NormalizedUlSinr(2), and NormalizedUlSinr(3), respectively;

Record the power allocation factors of the UE in SCC1, SCC2, and PCC as ScaleFactor(1), ScaleFactor(2), and ScaleFactor(3), respectively.

ScaleFactor(1)=ULPrbUsage(1)*NormalizedUlSinr(1)/(ULPrbUsage(1)*NormalizedUlSinr(1)+ULPrbUsage(2)*NormalizedUlSinr(2)+ULPrbUsage(3)*NormalizedUlSinr(3));

ScaleFactor(2)=ULPrbUsage(2)*NormalizedUlSinr(2)/(ULPrbUsage(1)*NormalizedUlSinr(1)+ULPrbUsage(2)*NormalizedUlSinr(2)+ULPrbUsage(3)*NormalizedUlSinr(3));

ScaleFactor(3)=ULPrbUsage(3)*NormalizedUlSinr(3)/(ULPrbUsage(1)*NormalizedUlSinr(1)+ULPrbUsage(2)*NormalizedUlSinr(2)+ULPrbUsage(3)*NormalizedUlSinr(3)).

Step S30: Determine, according to each of the power allocation factors and the total transmit power of the UE, the maximum transmit power of each component carrier for the UE.

After determining the power allocation factor of the UE in each component carrier, determining, according to each of the power allocation factors and the total transmit power of the UE, the maximum transmit power of each component carrier.

For example, the total transmit power of the UE is Pmcax_Total, and the maximum transmit power of the UE at SCC1, SCC2, and PCC is recorded as PmcaxOnCC(1), PmcaxOnCC(2), and PmcaxOnCC(3), respectively.

PmcaxOnCC(1)=Pmcax_Total*ScaleFactor(1);

PmcaxOnCC(2)=Pmcax_Total*ScaleFactor(2);

PmcaxOnCC(3)=Pmcax_Total*ScaleFactor(3).

In this embodiment, after determining that the UE transmits the maximum transmit powers PmcaxOnCC(1), PmcaxOnCC(2), and PmcaxOnCC(3) of each component carrier, PmcaxOnCC(1), PmcaxOnCC(2), and PmcaxOnCC(3) are passed. The RRC (Radio Resource Control) reconfiguration signaling is sent to the UE. After receiving the foregoing reconfiguration signaling, the UE parses the PmcaxOnCC(1), PmcaxOnCC(2), and PmcaxOnCC(3) carried in the reconfiguration signaling, and sets the maximum transmit powers of the SCC1, SCC2, and PCC to PmcaxOnCC respectively. 1), PmcaxOnCC(2) and PmcaxOnCC(3).

The power allocation method in this embodiment first determines the power allocation factor of the UE in each component carrier according to the uplink physical resource block PRB idle rate of each component carrier in the current detection period and the uplink transmission efficiency of the user equipment UE on each component carrier. And then determining, according to each of the power allocation factors and the total transmit power of the UE, the maximum transmit power of each component carrier for the UE, so that when the UE is scheduled between the component carriers, the component carriers are It is expected that the sum of the transmission powers will not exceed its actual total transmission power, that is, the power limitation will not occur, and the power reduction is prevented, so that the present invention can solve the problem of the performance degradation caused by the UE performing power reduction.

Further, based on the first embodiment, a second embodiment of the power allocation method of the present invention is proposed. In this embodiment, the uplink transmission efficiency of the user equipment UE on each component carrier in the current detection period is as follows: :

Measure the SINR value of the UE on each component carrier, and receive the power headroom report PHR of each component carrier reported by the UE;

In this embodiment, the SINR value of the single PRB is determined by using the SINR measurement value and the PHR value. Specifically, first, the SINR value of the UE in each component carrier is measured, and the power of each component carrier reported by the UE is received. The remaining amount report PHR; when the SINR measurement value of the UE on each component carrier is obtained, and the power headroom report PHR of each component carrier reported by the UE is received, according to each of the SINR measurement values and corresponding The PHR value carried by the PHR determines the SINR value of the single PRB of the UE on each component carrier, and uses the SINR value of each of the single PRBs as the uplink transmission efficiency of the UE on each component carrier. The following describes an example in which the uplink transmission efficiency of the UE on the component carrier SCC1 is obtained.

Optionally, the following formula is used to determine the SINR value (uplink transmission efficiency) of the single PRB of the UE on SCC1.

NormalizedUlSinr(1)=SINR1+ΔSINR1+δ1;

Wherein, SINR1 represents the measured SINR measurement value of the UE in SCC1, including the adjustment amount of AMC (Adaptive Modulation and Coding), ΔSINR1 represents the influence of the bandwidth when measuring SINR1, and δ1 is the PHR value corresponding to SINR1. And

PmcaxOnCC(1) is the maximum transmit power of the UE at SCC1, P _{P_PUSCH} is the expected transmit power of the UE at SCC1, P _{P_PUSCH} (i)=10log10(M0)+P _{o_Pusch} +αPL1+Δ _TF (i)+f(i) M0 is the number of PRBs that the UE needs to transmit, and P _{P_PUSCH} is the power parameter set by the base station, which is used to identify the expected UE receiving power spectral density, α is the smoothing factor, and PL1 is the current downlink path loss value of the UE in SCC1, Δ _TF (i) is based on the MCS adjustment when the power control parameter DeltaMCS_Enable is 1, and is 0 when DeltaMCS_Enable is 0, f(i) is the closed-loop power control parameter, and the value is 0 when the open-loop power control is performed, and i is the PUSCH. The ith frame of the (Physical Uplink Shared Channel).

Further, based on the first or second embodiment, a third embodiment of the power distribution method of the present invention is proposed. In this embodiment, before step S30, the method further includes:

Acquiring and correcting each of the power allocation factors according to the service type of each component carrier of the UE, and performing step S30 when the modification is completed.

As is well known, a base station carries various services of the UE, such as a VoIP voice service, a webpage text service, and an audio and video service. However, when the UE transmits these services, the service type of the UE is often transparent to the base station, that is, For the base station, the type of service of the UE it carries is not known.

In this embodiment, in each detection period, the UE may push the service type information that is transmitted on each component carrier to the base station, or the base station acquires the service type information that the UE transmits on each component carrier from the core network.

After acquiring the service type information of the UE in each component carrier, the power allocation factors are corrected according to the service type of each component carrier by the UE. It should be noted that, in this embodiment, corresponding priorities are preset for different service types, and corresponding correction amounts are allocated according to different priority types, for example, for VoIP voice services, webpage text services, and sounds. For the video service, the VoIP voice service has the highest priority, the audio and video service has the lower priority, and the webpage text service has the lowest priority. It is exemplified that the power allocation factors of the present embodiment are modified to increase the power allocation factor corresponding to the component carrier where the service with the higher priority is located, and correspondingly reduce the component carrier where the service with the lower priority is located. Corresponding power allocation factor.

The VoIP voice service, the webpage text service, and the audio and video service are respectively illustrated by the current UEs in SCC1, SCC2, and PCC:

After determining the power allocation factor of each UE in each component carrier according to each of the uplink transmission efficiency and the corresponding uplink PRB idle rate, it is determined that the services transmitted by the UE in SCC1, SCC2, and PCC are respectively VoIP voice services, and web pages. For example, the text service and the audio and video service are obtained according to the priority relationship of the foregoing services, and the correction amounts corresponding to the power allocation factors are CorrtOnCC(1), CorrtOnCC(2), and CorrtOnCC(3), respectively.

CorrtOnCC(1)=+10%(ULPrbUsage(1)*NormalizedUlSinr(1)+ULPrbUsage(2)*NormalizedUlSinr(2)+ULPrbUsage(3)*NormalizedUlSinr(3));

CorrtOnCC(2)=-6%(ULPrbUsage(1)*NormalizedUlSinr(1)+ULPrbUsage(2)*NormalizedUlSinr(2)+ULPrbUsage(3)*NormalizedUlSinr(3));

CorrtOnCC(3)=-4%(ULPrbUsage(1)*NormalizedUlSinr(1)+ULPrbUsage(2)*NormalizedUlSinr(2)+ULPrbUsage(3)*NormalizedUlSinr(3));

Then the corrected power allocation factors are:

ScaleFactor(1)’=ScaleFactor(1)+CorrtOnCC(1);

ScaleFactor(2)’=ScaleFactor(2)+CorrtOnCC(2);

ScaleFactor(3)’=ScaleFactor(3)+CorrtOnCC(3);

In this embodiment, after the correction of each of the power allocation factors is completed, the modified maximum power allocation factors are used to allocate the maximum transmit power of each component carrier, that is,

PmcaxOnCC(1)=Pmcax_Total*ScaleFactor(1)’;

PmcaxOnCC(2)=Pmcax_Total*ScaleFactor(2)’;

PmcaxOnCC(3)=Pmcax_Total*ScaleFactor(3)’.

The allocation strategy of this embodiment not only considers the uplink PRB idle rate of each component carrier and the transmission efficiency of the UE on each component carrier, but also considers the service type of the UE on each component carrier, and can improve the communication efficiency of the entire communication system.

Further, based on the second embodiment, a fourth embodiment of the power allocation method of the present invention is proposed. In this embodiment, when receiving the PHR reported by the UE, the following steps are also performed:

Each downlink path loss value after the smoothing process is stored, and the detection period is adjusted according to each downlink path loss value after the smoothing process.

It can be understood by those skilled in the art that in the actual engineering scenario, the detection period of the wireless communication is affected by many factors and dynamically changes. If the detection cycle of the power distribution is inconvenient, this obviously does not meet the actual demand, so This embodiment proposes an optional adjustment scheme of the detection period.

Specifically, when receiving the PHR reported by the UE, the embodiment not only acquires the PHR value carried by the PHR, but also derives the current downlink path loss value of the UE on each component carrier according to each of the PHRs, and uses the saved location. The downlink loss value of the UE in each component carrier is respectively smoothed by the corresponding current downlink path loss values, as shown in the following formula:

PLj=(1-α)*PLj+α*PLcurr(j);

Among them, PLj on the left side of the formula indicates the downlink path loss value after smoothing. PLj on the right side of the formula indicates the saved downlink path loss value, PLcurr indicates the current downlink path loss value, j indicates different component carriers, and α indicates the smoothing factor. The value ranges from [0, 1]. For example, in this embodiment, α is 0.5.

After the smoothing process is completed, the smoothed PLj is judged,

Where PLj _min and PLj _max respectively represent the downlink path loss threshold and the downlink path loss threshold for adjusting the detection period on the corresponding component carrier.

If

If it is greater than zero, the detection period is shortened, and the adjusted detection period cannot be less than the minimum detection period;

Equal to zero to maintain the detection period;

If it is less than zero, the detection period is extended, and the adjusted detection period cannot be greater than the maximum detection period.

It should be noted that the adjustment amount of the detection period and the minimum value and the maximum value of the detection period may be set as needed. For example, in this embodiment, the adjustment amount is set to 5 seconds, that is, each time the detection period is adjusted, the length is extended or shortened. The detection period is 5 seconds.

In this embodiment, the detection period is adjusted according to the downlink path loss value reported by the UE, which can improve the stability of the power allocation.

Further, based on the first or the second embodiment, a fifth embodiment of the power allocation method of the present invention is proposed. In this embodiment, the power allocation method further includes:

In order to increase the stability of the power allocation, this embodiment proposes another adjustment scheme of the optional detection period. Specifically, when obtaining the uplink PRB idle rate of each component carrier in the current detection period, the present embodiment performs the power allocation of the UE based on the uplink PRB idle rate. For details, refer to the foregoing embodiment, and details are not described herein again. And also counting the uplink PRB idle rate of each of the uplinks, and determining whether to adjust the detection period according to the statistical result, as shown in the following formula:

Where k denotes a different component carrier, and RbUsagek _min and RbUsagek _max respectively represent the minimum PRB utilization and the maximum PRB utilization rate for adjusting the detection period on the corresponding component carrier.

If

Equal to zero to maintain the detection period;

The present invention also provides a power distribution device. Referring to FIG. 2, in a first embodiment of the power distribution device of the present invention, the power distribution device includes:

The obtaining module 10 is configured to obtain an uplink physical resource block PRB idle rate of each component carrier in the current detection period and an uplink transmission efficiency of the user equipment UE on each component carrier;

The power distribution apparatus provided in this embodiment can be applied to a base station in a communication system such as LTE (Long Term Evolution) and LTE-A (LTE-Advanced), for example, in the application of Massive MIMO. In the CA (Carrier Aggregation) macro base station, the power allocation device is built in the base station to operate, so that the base station configures the uplink transmit power between the component carriers for the UE (User Equipment) in advance, so that the UE is in multiple components at the same time. When scheduling on a carrier, the transmit power of multiple component carriers does not exceed the total transmit power, thereby avoiding the problem that the UE performs power reduction and the performance is degraded.

In the present embodiment, when the power allocation is performed, the acquisition module 10 first acquires the uplink PRB (Physical Resource Block, the basic unit of the physical resource allocation of the air interface) of the component carriers in the current detection period, and the user equipment UE. Uplink transmission efficiency on each component carrier. Specifically, the acquiring module 10 calculates a SINR (Signal Interference Plus Noise Ratio) value of the UE converted to a single PRB in each component carrier when acquiring the uplink transmission efficiency of the UE in each component carrier. The SINR value of the single PRB of the UE on each component carrier is used as the uplink transmission efficiency of the UE on each component carrier.

Specifically, the SINR initially appears in multi-user detection, assuming that there are two users 1, 2, and two signals of the transmitting antenna (CDMA (Code Division Multiple Access) is code orthogonal, OFDM (Orthogonal Frequency Division Multiplexing) , orthogonal frequency division multiplexing) using spectral orthogonality, which The data is used to distribute different data to two users. User 1 receives the data sent by the transmitting antenna to itself. This is a useful signal, and also receives the data sent by the transmitting antenna to user 2, which is interference interference. Of course there is noise Noise.

When the obtaining module 10 acquires the uplink PRB idle rate of each component carrier, the uplink PRB idle rate of the component carrier CC1 is calculated.

In this embodiment, the obtaining module 10 collects the uplink PRB usage number Ucc1 of the CC1 in the current detection period, and counts the uplink PRB availability number Tcc1 of the CC1, and uses the ratio of (Tcc1-Ucc1) and Tcc1 as the uplink PRB idle rate of CC1.

The determining module 20 is configured to determine, according to each of the uplink transmission efficiency and the corresponding uplink PRB idle rate, a power allocation factor of the UE in each component carrier;

In this embodiment, after the obtaining module 10 obtains the uplink PRB idle rate of each component carrier and the uplink transmission efficiency of the UE in each component carrier, the determining module 20 is configured according to the uplink transmission efficiency and the corresponding uplink PRB idle. Rate, determining the power allocation factor of the UE in each component carrier.

Specifically, the determining module 20 calculates a product of each of the uplink transmission efficiency and its corresponding uplink PRB idle rate, and calculates a sum value of each of the products, and takes a ratio of each of the products and the sum value as a The power allocation factor of the UE in each component carrier.

For example, the base station includes one primary component carrier PCC, two secondary component carriers SCC1 and SCC2, and the uplink PRB idle rates obtained by the acquisition module 10 to SCC1, SCC2, and PCC are ULPrbUsage(1), ULPrbUsage(2), and ULPrbUsage(3), respectively. And obtaining uplink transmission efficiencies of the UE on SCC1, SCC2, and PCC are NormalizedUlSinr(1), NormalizedUlSinr(2), and NormalizedUlSinr(3), respectively;

The configuration module 30 is configured to determine, according to each of the power allocation factors and the total transmit power of the UE, the maximum transmit power of each component carrier.

After the determining module 20 determines the power allocation factor of the UE in each component carrier, the configuration module 30 determines and configures the component in the component according to each of the power allocation factors and the total transmit power of the UE. The maximum transmit power of the carrier.

PmcaxOnCC(1)=Pmcax_Total*ScaleFactor(1);

PmcaxOnCC(2)=Pmcax_Total*ScaleFactor(2);

PmcaxOnCC(3)=Pmcax_Total*ScaleFactor(3).

In this embodiment, the configuration module 30 determines PmcaxOnCC(1), PmcaxOnCC(2), and after determining the maximum transmit powers PmcaxOnCC(1), PmcaxOnCC(2), and PmcaxOnCC(3) of each component carrier. PmcaxOnCC(3) is sent to the UE through RRC (Radio Resource Control) reconfiguration signaling. After receiving the foregoing reconfiguration signaling, the UE parses the PmcaxOnCC(1), PmcaxOnCC(2), and PmcaxOnCC(3) carried in the reconfiguration signaling, and sets the maximum transmit powers of the SCC1, SCC2, and PCC to PmcaxOnCC respectively. 1), PmcaxOnCC(2) and PmcaxOnCC(3).

The power allocation apparatus of the present embodiment first determines the power allocation factor of the UE in each component carrier according to the uplink physical resource block PRB idle rate of each component carrier in the current detection period and the uplink transmission efficiency of the user equipment UE on each component carrier. And then determining, according to each of the power allocation factors and the total transmit power of the UE, the maximum transmit power of each component carrier for the UE, so that when the UE is scheduled between the component carriers, the component carriers are It is expected that the sum of the transmission powers will not exceed its actual total transmission power, that is, the power limitation will not occur, and the power reduction is prevented, so that the present invention can solve the problem of the performance degradation caused by the UE performing power reduction.

Further, based on the first embodiment, a second embodiment of the power distribution apparatus of the present invention is proposed. In this embodiment, the acquiring module 10 is further configured to measure a signal to interference and noise ratio (SINR) of the UE on each component carrier. And receiving, by the UE, the power headroom report PHR of each component carrier; and determining, according to each of the SINR measurement values and the PHR value carried by the corresponding PHR, the single PRB of the UE on each component carrier. The SINR value is used as the uplink transmission efficiency of each UE in each component carrier.

In this embodiment, the acquiring module 10 determines the SINR value of the single PRB by using the SINR measurement value and the PHR value. Specifically, the acquiring module 10 first measures the SINR value of the UE in each component carrier, and receives the SINR value. The power headroom of the component carrier reported by the UE reports the PHR; the SINR measurement value of the UE in each component carrier is obtained, and the power headroom report PHR of each component carrier reported by the UE is received. The obtaining module 10 determines, according to each of the SINR measurement values and the PHR value carried by the corresponding PHR, the SINR value of the single PRB of the UE on each component carrier, and respectively sets the SINR values of the single PRBs. As the uplink transmission efficiency of the UE on each component carrier. The following takes the acquisition module 10 as an example to obtain the uplink transmission efficiency of the UE on the component carrier SCC1.

NormalizedUlSinr(1)=SINR1+ΔSINR1+δ1;

Further, based on the first or second embodiment, a third embodiment of the power distribution apparatus of the present invention is proposed. In this embodiment, the power distribution apparatus further includes a correction module, configured to acquire and according to the UE in each Correcting each of the power allocation factors by a service type of the component carrier;

In this embodiment, the UE may push the service type information transmitted by each component carrier to the base station (correction module) for each detection period, or the correction module acquires the UE's component carrier transmission from the core network. Business type information.

After acquiring the service type information of the UE in each component carrier, the modification module corrects each of the power allocation factors according to the service type of the UE in each component carrier. It should be noted that, in this embodiment, corresponding priorities are preset for different service types, and corresponding correction amounts are allocated according to different priority types, for example, for VoIP voice services, webpage text services, and sounds. For the video service, the VoIP voice service has the highest priority, the audio and video service has the lower priority, and the webpage text service has the lowest priority. It is stipulated that the correction module corrects each of the power allocation factors by increasing the power allocation factor corresponding to the component carrier where the service with the higher priority is located, and correspondingly reducing the component carrier corresponding to the service with the lower priority. Power allocation factor.

After the determining module 20 determines the power allocation factor of each UE in each component carrier according to each of the uplink transmission efficiency and its corresponding uplink PRB idle rate, the modification module identifies the service transmitted by the UE in SCC1, SCC2, and PCC. For example, the VoIP voice service, the webpage text service, and the audio and video service are respectively obtained, and the correction amounts corresponding to each of the power allocation factors are CorrtOnCC(1), CorrtOnCC(2), and CorrtOnCC(3) according to the priority relationship of each of the foregoing services. ),among them,

Then the corrected power allocation factors are:

ScaleFactor(1)’=ScaleFactor(1)+CorrtOnCC(1);

ScaleFactor(2)’=ScaleFactor(2)+CorrtOnCC(2);

ScaleFactor(3)’=ScaleFactor(3)+CorrtOnCC(3);

In this embodiment, after the correction module completes the modification of each of the power allocation factors, the configuration module 30 uses the corrected power allocation factors to respectively allocate the maximum transmit power of the UE in each component carrier, that is,

PmcaxOnCC(1)=Pmcax_Total*ScaleFactor(1)’;

PmcaxOnCC(2)=Pmcax_Total*ScaleFactor(2)’;

PmcaxOnCC(3)=Pmcax_Total*ScaleFactor(3)’.

Further, based on the second embodiment, a fourth embodiment of the power distribution apparatus of the present invention is provided. In this embodiment, the power distribution apparatus further includes a first adjustment module, configured to receive the PHR reported by the UE. At the same time, using the saved downlink loss value of each component carrier, the current downlink path loss value of the UE derived by the corresponding PHR is smoothed; and each downlink path loss after the smoothing process is saved. The value is adjusted according to each downlink path loss value after smoothing.

Specifically, when receiving the PHR reported by the UE, the determining module 10 obtains the PHR value carried by the PHR, and the first adjusting module further derives the current downlink loss value of the UE in each component carrier according to each of the PHRs. And using the saved downlink loss value of each component carrier of the UE, respectively smoothing the corresponding current downlink path loss values, as shown in the following formula:

PLj=(1-α)*PLj+α*PLcurr(j);

After the smoothing process is completed, the first adjustment module determines the smoothed PLj,

Wherein, PLj _min and PLj _max respectively represent a downlink path loss small threshold and a downlink path loss large threshold for adjusting the detection period on the corresponding component carrier.

If

If it is greater than zero, the first adjustment module shortens the detection period, and the adjusted detection period cannot be less than the minimum detection period;

If it is equal to zero, the first adjustment module maintains the detection period;

If it is less than zero, the first adjustment module extends the detection period, and the adjusted detection period cannot be greater than the maximum detection period.

It should be noted that the adjustment amount of the detection period and the minimum value and the maximum value of the detection period may be set as needed. For example, in this embodiment, the adjustment amount is set to 5 seconds, that is, each time the first adjustment module adjusts the detection period. , extend or shorten the detection period by 5 seconds.

Further, based on the first or second embodiment, a fifth embodiment of the power distribution apparatus of the present invention is proposed. In this embodiment, the power distribution apparatus further includes a second adjustment module, configured to use each of the current detection periods. The uplink PRB idle rate of the component carrier adjusts the detection period.

Where k denotes a different component carrier, and RbUsagek _min and RbUsagek _max respectively represent the minimum PRB utilization and the maximum PRB utilization rate of the UE for adjusting the detection period on the corresponding component carrier.

If

If the value is greater than zero, the second adjustment module shortens the detection period, and the adjusted detection period cannot be less than the minimum detection period;

Equal to zero, the second adjustment module maintains the detection period;

If it is less than zero, the second adjustment module extends the detection period, and the adjusted detection period cannot be greater than the maximum detection period.

It should be noted that the adjustment amount of the detection period and the minimum value and the maximum value of the detection period may be set as needed. For example, in this embodiment, the adjustment amount is set to 5 seconds, that is, each time the second adjustment module adjusts the detection period. , extend or shorten the detection period by 5 seconds.

Industrial applicability

The present invention relates to the field of communication technologies, and provides a power distribution method and apparatus. The method and the device can first determine the power allocation factor of the UE in each component carrier according to the uplink physical resource block PRB idle rate of each component carrier in the current detection period and the uplink transmission efficiency of the user equipment UE on each component carrier, and then according to each The power allocation factor and the total transmit power of the UE determine and configure a maximum transmit power of each component carrier for the UE, such that the UE aggregates the expected transmit power of each component carrier when scheduling between component carriers. It will not exceed its actual total transmit power, that is, there will be no power limitation, and the power reduction will be avoided, thereby solving the problem of the performance degradation caused by the UE performing power reduction.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

A power distribution method comprising:

Obtaining an uplink physical resource block PRB idle rate of each component carrier in the current detection period and an uplink transmission efficiency of the user equipment UE on each component carrier;

Determining, according to each of the uplink transmission efficiency and the corresponding uplink PRB idle rate, a power allocation factor of the UE on each component carrier;

And determining, according to each of the power allocation factors and the total transmit power of the UE, the maximum transmit power of each component carrier for the UE.
The power allocation method according to claim 1, wherein the obtaining the uplink transmission efficiency of the user equipment UE on each component carrier in the current detection period comprises:

Measuring a signal to interference and noise ratio SINR value of the UE on each component carrier, and receiving a power headroom report PHR of each component carrier reported by the UE;

Determining, according to each of the SINR measurement values and the PHR value carried by the corresponding PHR, the SINR value of the single PRB of the UE on each component carrier, and using the SINR value of each of the single PRBs as the UE in each component. The uplink transmission efficiency of the carrier.
The power allocation method according to claim 1 or 2, wherein the determining the power allocation factor of the UE on each component carrier according to each of the uplink transmission efficiency and its corresponding uplink PRB idle rate comprises:

Calculating a product of each of the uplink transmission efficiency and its corresponding uplink PRB idle rate, and calculating a sum of each of the products;

The ratio of each of the products and the sum value is used as a power allocation factor of the UE in each component carrier.
The power allocation method according to claim 1 or 2, wherein said maximum transmission power of each component carrier is determined and configured for said UE according to said each power allocation factor and said total transmission power of said UE Before the steps, it also includes:

Acquiring and correcting each of the power allocation factors according to a service type of each component carrier of the UE;

Upon completion of the correction, the step of determining and configuring the maximum transmit power of each component carrier for the UE according to each of the power allocation factors and the total transmit power of the UE is performed.
The power allocation method according to claim 2, wherein, while receiving the PHR reported by the UE, the following steps are further performed:

Using the saved downlink loss value of each component carrier in the component, respectively, smoothing the current downlink path loss value of the UE derived by the corresponding PHR;

Each downlink path loss value after the smoothing process is stored, and the detection period is adjusted according to each downlink path loss value after the smoothing process.
The power distribution method according to claim 1 or 2, further comprising:

The detection period is adjusted according to an uplink PRB idle rate of each component carrier in the current detection period.
A power distribution device comprising:

Obtaining a module, configured to obtain an uplink physical resource block PRB idle rate of each component carrier in a current detection period, and an uplink transmission efficiency of the user equipment UE on each component carrier;

a determining module, configured to determine a power allocation factor of the UE in each component carrier according to each of the uplink transmission efficiency and a corresponding uplink PRB idle rate thereof;

And a configuration module, configured to determine, according to each of the power allocation factors and the total transmit power of the UE, a maximum transmit power of each component carrier for the UE.
The power distribution apparatus according to claim 7, wherein the acquisition module is further configured to measure a signal to interference and noise ratio SINR value of the UE on each component carrier, and receive the power of each component carrier reported by the UE. a margin report PHR; and determining, according to each of the SINR measurement values and the PHR value carried by the corresponding PHR, the SINR value of the single PRB of the UE on each component carrier, and using the SINR values of each of the single PRBs as The uplink transmission efficiency of the UE on each component carrier.
The power distribution apparatus according to claim 7 or 8, wherein said determining module is further configured to calculate a product of each of said uplink transmission efficiency and its corresponding uplink PRB idle rate, and calculate a sum of each of said products; The ratio of each of the products and the sum value is used as a power allocation factor of the UE in each component carrier.
The power distribution apparatus according to claim 7 or 8, wherein the power distribution apparatus further comprises a correction module configured to acquire and correct each of the power allocation factors according to a service type of each component carrier of the UE;

The configuration module is further configured to determine and configure a maximum transmit power of each component carrier for the UE according to each of the power allocation factors and the total transmit power of the UE when the correction is completed.
The power distribution apparatus according to claim 8, wherein the power distribution apparatus further comprises a first adjustment module, configured to: when receiving the PHR reported by the UE, adopting the saved UE under each component carrier The path loss value is respectively calculated for the current downlink path loss value of the UE derived from the corresponding PHR. Smoothing processing; and storing each downlink path loss value after the smoothing process, and adjusting the detection period according to each downlink path loss value after the smoothing process.
The power distribution apparatus according to claim 7 or 8, wherein said power distribution apparatus further comprises a second adjustment module configured to adjust said detection period in accordance with an uplink PRB idle rate of each component carrier.