CN102300305A - Method and device for controlling uplink power - Google Patents

Abstract

The invention discloses a method for controlling uplink power, which is used for controlling the sum of the transmitting power of all uplink channels in a sub-frame not to surpass the maximum transmitting power allowed by UE (User Equipment). The method comprises the following steps: the UE determines the transmitting power of an uplink channel on each carrier; specific to each frequency band, the UE judges whether the sum of the transmitting power of each uplink channel on carriers in the same frequency band surpasses the maximum transmitting power of the frequency band; if so, the UE keeps the computed transmitting power value of the uplink channel on each carrier invariant; and otherwise, the UE lowers the transmitting power of the uplink channels on the carriers in the frequency band based on the maximum transmitting power, so that the sum of the transmitting power of the uplink channels on the carriers in the frequency band does not surpass the maximum transmitting power of the frequency band after operation, and the sum of the transmitting power of uplink channels of all frequency bands does not surpass the maximum transmitting power allowed by the UE. The invention further discloses a device for implementing the method.

Description

Method and device for controlling uplink power

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for uplink power control.

Background

An LTE-a (Long Term Evolution-Advanced, Advanced) system introduces a CA (Carrier Aggregation) technology, as shown in fig. 1, the technology aggregates some frequency spectrums allocated to the existing system to use a large bandwidth, at this time, uplink and downlink carriers in the system may be asymmetrically configured, that is, a user may occupy N ≧ 1 Carrier for downlink transmission, and M ≧ 1 Carrier for uplink transmission.

The Carrier aggregation technology enables a terminal to simultaneously operate in multiple cells (cells), and for an FDD (Frequency Division Duplex) system, one cell includes one DL CC (Downlink Component Carrier) and one UL CC (uplink Component Carrier), and for a TDD (Time Division Duplex) system, one Carrier becomes one cell. Each component carrier in the carrier aggregation system may be continuous or discontinuous, and the bandwidth between the component carriers may be the same or different, and in order to maintain compatibility with an LTE (Long Term Evolution) system, the maximum bandwidth of each component carrier is limited to 20 MHz. LTE Rel-10 (release 10) specifies that a maximum of 5 DL CC aggregations can be supported, and only continuous carrier aggregation is supported in the uplink direction. In addition, LTE-a also classifies cells for carrier aggregation into: pcell (Primary Cell) and Scell (Secondary Cell). Only one cell among cells aggregated by a UE (user equipment) is defined as a Pcell, and is selected by a base station and configured to a terminal through an RRC (Radio Resource Control) signaling, and pcells of different terminals may be different for implementing some specific functions and transmissions, such as PUCCH (Physical uplink Control Channel) transmission, reference carrier (path loss measurement) serving as a path loss measurement, PRACH (Physical Random Access Channel) transmission, SPS (Semi-Persistent Scheduling) transmission, and the like. Other cells except the Pcell for UE aggregation are all referred to as scells.

The uplink power control in the LTE-ARel-10 is performed on a per component carrier basis, and for different physical channels, the following is defined:

PUCCH (physical uplink control channel) transmission power: transmission power P used by UE for transmitting PUCCH channel in uplink subframe i_PUCCHCalculated by the formula:

<math> <mrow> <msub> <mi>P</mi> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mn>0</mn> <mo>_</mo> <mi>PUCCH</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>PL</mi> <mi>c</mi> </msub> <mo>+</mo> <mi>h</mi> <mrow> <mo>(</mo> <msub> <mi>n</mi> <mi>CQI</mi> </msub> <mo>,</mo> <msub> <mi>n</mi> <mi>HARQ</mi> </msub> <mo>,</mo> <msub> <mi>n</mi> <mi>SR</mi> </msub> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&Delta;</mi> <mrow> <mi>F</mi> <mo>_</mo> <mi>PUCCH</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>F</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&Delta;</mi> <mi>TxD</mi> </msub> <mrow> <mo>(</mo> <msup> <mi>F</mi> <mo>&prime;</mo> </msup> <mo>)</mo> </mrow> <mo>+</mo> <mi>g</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mo>[</mo> <mi>dBm</mi> <mo>]</mo> </mrow> </math>

wherein: p_CMAX，c(i) Is the cell maximum transmission power in subframe i configured to cell c. Parameter Δ_{F_PUCCH}(F) Configured by higher layers, corresponding to different PUCCH formats with respect to power offset of PUCCHHfom 1a, whereinThe PUCCH format comprises a plurality of formats of the PUCCH format1/1a/1b/2/2a/2 b/3. Delta_TxD(F') represents a transmit diversity power offset with respect to a single port transmit power, Δ if the UE is configured to transmit PUCCH on a 2-antenna port_TxD(F') configuring different PUCCH formats by a high-level signaling, and setting the value set as {0, -2} dB; otherwise, Δ_TxD(F′)＝0。h(n_CQI，n_HARQ，n_SR) Is the power offset related to the number of bits carried by the PUCCH, where n_CQICorresponding to the number of CQI bits, n, carried_HARQCorresponding to the number of ACK/NACK bits carried. P_OPUCCHFor transmitting power target value, by cell-specific part P_{O_NOMINAL_PUCCH}And UE-specific part P_{O_UE_PUCCH}The two parts are added to form the composite material. g (i) is a cumulative amount of power control command words,

wherein delta_PUCCHThe UE-specific correction value for the PUCCH is also referred to as a TPC (Transmit Power Control) command, and is included in a DCI (Downlink Control Information) format 1A/1B/1D/1/2a/2/2B/2C (Physical Downlink Control channel) corresponding to the primary cell, or included in a PDCCH of DCI format 3/3a and jointly encoded with a PUCCH Power correction value specific to another UE, where a CRC (cyclic redundancy Check) of the PDCCH is scrambled by a TPC-PUCCH-radio network Temporary Identifier (PUCCH Power Control radio network Temporary Identifier).

PUSCH (Physical Uplink Shared Channel) transmission power:

if the UE does not have PUCCH transmission in the subframe i, the UE transmits the transmission power P of the PUSCH on the serving cell c in the subframe i_PUSCH，c(i) Calculated according to the following formula:

<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <mn>10</mn> <msub> <mi>log</mi> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mi>M</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>P</mi> <mrow> <mi>O</mi> <mo>_</mo> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&alpha;</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mi>PL</mi> <mi>c</mi> </msub> <mo>+</mo> <msub> <mi>&Delta;</mi> <mrow> <mi>TF</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>f</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mo>[</mo> <mi>dBm</mi> <mo>]</mo> </mrow> </math>

if the UE has PUCCH transmission in the subframe i, the UE transmits the transmission power P of the PUSCH on the serving cell c in the subframe i_PUSCH，c(i) Calculated according to the following formula:

<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <mn>10</mn> <msub> <mi>log</mi> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <mn>10</mn> <msub> <mi>log</mi> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mi>M</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>P</mi> <mrow> <mi>O</mi> <mo>_</mo> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&alpha;</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mi>PL</mi> <mi>c</mi> </msub> <mo>+</mo> <msub> <mi>&Delta;</mi> <mrow> <mi>TF</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>f</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mo>[</mo> <mi>dBm</mi> <mo>]</mo> </mrow> </math>

wherein: p_CMAX，c(i) Is the maximum allowed transmit power of the UE on serving cell c in subframe i, configured by higher layers,is P_CMAX，c(i) The linear threshold of (2).

Transmitting power P for the PUCCH_PUCCH(i) The linear threshold of (2). M_PUSCH，c(i) Is the resource size of PUSCH on cell c of active subframe i, expressed in number of Resource Blocks (RBs). P_{O_PUSCH，c}(j) Is the initial value of the PUSCH power on the cell c, normalized by the cell specific normalization part P_{O_NOMINAL_PUSCH，c}(j) And UE-specific part P_{O_UE_PUSCH，c}(j) And (4) the sum of the components. Alpha is alpha_c(j) Is the path loss compensation factor of the service cell c, is a cell dedicated parameter, and is indicated by a high-level signaling through 3 bits; when j is 0 or 1, α_cBelongs to {0, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1 }; when j is 2, alpha_c(j) 1 (i.e. for PUSCH transmission for random access message 3, full path loss compensation is always used). PL is downlink path loss measured by the UE, and a downlink Cell (namely, SIB (System Information Block) 2link Cell) or Pcell having a link relationship configured by a System with an uplink Cell where the PUSCH is located is determined according to a high-layer parameter pathloss reference linking (pathloss reference linking indication) for measurement. K_SWhen the content is equal to 1.25,

indicating that different Modulation and Coding Scheme (MCS) modes correspond to different power offsets; k_SWhen equal to 0, Δ T_F，c(i) 0 denotes the function of turning off the power regulation with the MCS, where K_SIs a UE specific parameter, indicated by higher layer signaling, for controlling Δ T_F，c(i) The value of (a). The bpre (bit Per Resource element) represents the corresponding bit number Per Resource element in the PUSCH,

(indicating the offset between the coding rate of the uplink control information carried on the PUSCH and the coding rate of the uplink data on the PUSCH, pre-configured by higher layer signaling). (i) there are two modes of accumulation mode and current absolute value mode for PUSCH power control adjustment quantity, if the UE is configured by high layer to start the accumulation value mode power adjustment of cell c or TPC command delta of cell c_PUSCH，cIncluded in the PDCCH having DCI format 0, where CRC is scrambled with TC-RNTI (Temporary Cell-Radio Network Temporary identifier), f_c(i)＝f_c(i-1)+δ_PUSCH，c(i-K_PUSCH) (ii) a If the high-level signaling configuration UE does not start the cumulative value mode power adjustment of the cell c, f_c(i)＝δ_PUSCH，c(i-K_PUSCH)，δ_PUSCH，cThe UE-specific correction value for the PUSCH, also referred to as a TPC command, is included in the PDCCH in DCI format 0/4, or included in the PDCCH in DCI format 3/3a and jointly encoded with other TPC commands, where a CRC check bit of the PDCCH is scrambled by a TPC-PUSCH-RNTI (TPC-PUSCH-Radio Network Temporary Identifier).

SRS (sounding reference signal) transmission power:

UE transmits the transmission power P required by the SRS transmitted by the cell c in the subframe i_SRSDefined by the following equation:

P_SRS，c(i)＝min{P_CMAX，c(i)，P_{SRS_OFFSET，c}(m)+10log₁₀(M_SRS，c)+P_{O_PUSCHc}(j)+α_c(j)·PL_c+f_c(i)}[dBm]

wherein, P_{SRS_OFFSET，c}And (m) is a power offset of the SRS in different transmission modes (different antenna ports) on the cell c relative to the PUSCH, where m-0 corresponds to the periodic SRS and m-1 corresponds to the aperiodic SRS. M_SRS，cIs the SRS transmission bandwidth on cell c in subframe i, expressed in number of RBs (Resource Block). The remaining parameters are the power control parameters for the PUSCH transmission on the cell.

Transmission power of PRACH (physical random access channel) channel:

the PRACH channel is sent only on Pcel1, and the transmit power is calculated by the following formula:

PPRACH＝min{P_CMAX，c(i)，PREAMBLE_RECEIVED_TARGET_POWER+PL_c}_[dBm]

wherein, P_CMAX，c(i) Is the maximum allowed transmit power for the UE in cell c. PL_cThe measured downlink path loss in the cell for the UE. The PREAMBLE _ RECEIVED _ TARGET _ POWER is calculated by a MAC (Medium Access Control) layer of the UE, and is notified to the UE as a PRACH TARGET POWER.

In addition, if the total transmission power of the UE in the current subframe i exceeds the maximum transmission power allowed by the UE, when power reduction is performed, the UE should preferentially ensure the transmission power of the PUCCH, and reduce the PUSCH transmission power on each cell c in equal proportion to meet the maximum transmission power of the UE:

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>c</mi> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>PUCCH</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math>

wherein

Is P_PUCCH(i) The linear threshold value of (a) is,

is P_PUSCH，c(i) The linear threshold value of (a) is,

maximum transmit power allowed for configured UEs P_CMAXW (i) is the PUSCH power reduction factor on each cell c, 0 ≦ w (i) ≦ 1. If there is no PUCCH transmission in the current subframe i, then ${\hat{P}}_{\mathrm{PUCCH}}\left(i\right)=0.$

If there is PUSCH transmission for carrying UCI (Uplink control information) in a cell c' and PUSCH transmission for not carrying UCI in other serving cells in a current subframe i, and the total transmit power of the UE in the current subframe i exceeds the maximum transmit power allowed by the UE, when power is reduced, the UE should preferentially ensure that the transmit power of the PUSCH for carrying UCI is not reduced, and the UE needs to reduce the transmit power of each PUSCH for not carrying UCI in the current subframe i in equal proportion to fill the maximum transmit power of the UE:

<math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>c</mi> <mo>&NotEqual;</mo> <msup> <mi>c</mi> <mo>&prime;</mo> </msup> </mrow> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mi>g</mi> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>C</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <msup> <mi>C</mi> <mo>&prime;</mo> </msup> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math>

wherein,for the linear domain value of the transmission power of the PUSCH carrying UCI, w (i) is the PUSCH power reduction factor on each serving cell c not carrying UCI, 0 ≦ w (i) ≦ 1. When the power of all PUSCHs not carrying UCI is reduced to 0, the total transmission power of the UE still exceeds the maximum allowed transmission power, and the power of the PUSCHs carrying UCI is further reduced.

If the UE simultaneously has PUCCH, PUSCH transmission bearing UCI and PUSCH transmission without UCI in the current subframe i, and the total transmitting power of the UE exceeds the maximum allowable transmitting power, the UE should preferentially ensure the transmitting power of the PUCCH, secondly ensure the transmitting power of the PUSCH bearing UCI, and reduce the PUSCH transmitting power on each cell c in equal proportion to meet the maximum transmitting power of the UE:

for the SRS transmitted simultaneously in multiple cells in the same subframe, if the total transmit power of the UE exceeds the maximum allowed transmit power, performing power reduction on the SRS in each cell in an equal proportion to satisfy the maximum transmit power of the UE:

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>c</mi> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>SRS</mi> <mo>,</mo> <mi>c</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </math>

wherein

Is P_SRS，c(i) W (i) is the SRS power reduction factor on each cell c, 0 ≦ w (i) ≦ 1.

In LTE-ARel-11, multiple component carriers aggregated by a terminal supporting LTE-a CA technology may belong to different frequency bands, and the distance between the frequency bands to which the component carriers belong may also be relatively large, so that carrier aggregation in different frequency bands is called inter-band CA. As shown in fig. 2, the terminal aggregates three cells: cell1, Cell2, and Cell3, where Cell1 and Cell2 are at Band1 and Cell3 is at Band 2. The transmission characteristics of cells in different bands are different greatly, so if one terminal can aggregate multiple bands and different bands can support different TDD UL/DL configurations to avoid adjacent frequency interference, the terminal will generally use different transceivers for different bands. How to perform uplink power control for different frequency bands is not an effective scheme at present.

Disclosure of Invention

The embodiment of the invention provides a method and a device for controlling uplink power, which are used for controlling the sum of the transmitting power of all uplink channels in a subframe not to exceed the maximum transmitting power allowed by UE.

A method for controlling uplink power comprises the following steps:

the method comprises the steps that User Equipment (UE) determines the transmitting power of an uplink channel on each carrier based on the maximum transmitting power of each carrier and a power control parameter corresponding to the carrier;

for each frequency band, the UE judges whether the sum of the transmitting power of each uplink channel on the carrier in the same frequency band exceeds the maximum transmitting power of the frequency band;

if not, the UE keeps the transmission power value of the uplink channel calculated on each carrier unchanged;

if the sum of the transmission power of the uplink channels on the carriers in the same frequency band does not exceed the maximum transmission power of the frequency band after the power reduction operation, the UE reduces the power of the uplink channel transmission power on the carriers in the frequency band based on the maximum transmission power of the frequency band so as to ensure that the sum of the transmission power of the uplink channels on the carriers in all the frequency bands does not exceed the maximum transmission power allowed by the UE after the power reduction operation.

A method of transmitting configuration information, comprising the steps of:

and the network side sends the maximum transmitting power of each frequency band to the UE through high-layer signaling or PDCCH signaling.

A user equipment, comprising:

a power determining module, configured to determine the transmit power of the uplink channel on each carrier based on the maximum transmit power of each carrier and a power control parameter corresponding to the carrier;

the control module is used for judging whether the sum of the transmitting power of each uplink channel on the carrier in the same frequency band exceeds the maximum transmitting power of the frequency band or not aiming at each frequency band, and if not, the transmitting power value of the uplink channel calculated on each carrier is kept unchanged; if the sum of the transmission power of the uplink channels on the carriers in the same frequency band does not exceed the maximum transmission power of the frequency band after the power reduction operation, the sum of the transmission power of the uplink channels on the carriers in all the frequency bands after the power reduction operation does not exceed the maximum transmission power allowed by the UE.

A network-side device, comprising:

the control module is used for determining the maximum transmitting power of each frequency band;

and the interface module is used for sending the maximum transmitting power of each frequency band to the UE through high-level signaling or PDCCH signaling.

In the embodiment of the invention, the maximum transmitting power allowed by each band (frequency band) is configured for the UE in advance, the UE judges whether the transmitting power of each uplink channel on the carrier in the same frequency band needs to be adjusted or not according to the maximum transmitting power of the frequency band, if so, corresponding operation is carried out so as to ensure that the sum of the transmitting power of the uplink channel on the carrier in the same frequency band after power reduction operation does not exceed the maximum transmitting power of the frequency band, and the sum of the transmitting power of the uplink channel on the carrier in all frequency bands after power reduction operation does not exceed the maximum transmitting power allowed by the UE. Power control for the frequency band is achieved. The maximum transmission power of each frequency band configured in the UE is configured to the UE by a base station higher layer signaling (such as an RRC (radio resource control) signaling or a MAC (media access control) signaling) or a PDCCH signaling; or pre-agreed between the UE and the base station, for example, the maximum transmit power of each frequency band is predetermined to average the maximum transmit power allowed by the UE, no additional signaling is required.

Drawings

Fig. 1 is a schematic diagram of carrier aggregation in the prior art;

FIG. 2 is a diagram illustrating carrier aggregation in different frequency bands according to the prior art;

FIG. 3 is a flowchart of a main method for uplink power control according to an embodiment of the present invention;

fig. 4 is a flowchart of a method for uplink power control in maximum transmit power association configuration of a frequency band according to an embodiment of the present invention;

fig. 5 is a first schematic diagram of carrier aggregation in different frequency bands according to an embodiment of the present invention;

fig. 6 is a second schematic diagram of carrier aggregation in different frequency bands according to an embodiment of the present invention;

fig. 7 is a third schematic diagram of carrier aggregation in different frequency bands according to an embodiment of the present invention;

fig. 8 is a flowchart of a method for uplink power control according to a first embodiment of the present invention when maximum transmission power of a frequency band is configured independently;

fig. 9 is a flowchart of a method for uplink power control in a second embodiment when maximum transmission power of a frequency band is configured independently according to an embodiment of the present invention;

FIG. 10 is a flowchart of a method for transmitting configuration information according to an embodiment of the present invention;

FIG. 11 is a diagram illustrating a UE according to an embodiment of the present invention;

fig. 12 is a block diagram of a network side device in an embodiment of the present invention.

Detailed Description

In the embodiment of the invention, the maximum transmitting power allowed by each band (frequency band) is configured for the UE in advance, the UE judges whether the transmitting power of each uplink channel on the carrier in the same frequency band needs to be adjusted or not according to the maximum transmitting power of the frequency band, if so, corresponding operation is carried out so as to ensure that the sum of the transmitting power of the uplink channel on the carrier in the same frequency band after power reduction operation does not exceed the maximum transmitting power of the frequency band, and the sum of the transmitting power of the uplink channel on the carrier in all frequency bands after power reduction operation does not exceed the maximum transmitting power allowed by the UE. Power control for the frequency band is achieved. The maximum transmission power of each frequency band configured in the UE is configured to the UE by a base station higher layer signaling (such as an RRC (radio resource control) signaling or a MAC (media access control) signaling) or a PDCCH signaling; or pre-agreed between the UE and the base station, for example, the maximum transmit power of each frequency band is predetermined to average the maximum transmit power allowed by the UE, no additional signaling is required.

In this embodiment, the frequencies of different frequency bands are not consecutive, that is, the continuous frequency resource allocated to the UE is one frequency band.

Referring to fig. 3, the main method flow of the uplink power control in this embodiment is as follows:

step 301: and the UE determines the transmitting power of the uplink channel on each carrier based on the maximum transmitting power of each carrier and the power control parameter corresponding to the carrier.

Step 302: and for each frequency band, the UE judges whether the sum of the transmitting power of each uplink channel on the carrier in the same frequency band exceeds the maximum transmitting power of the frequency band.

Step 303: and if the uplink power value does not exceed the preset value, the UE keeps the transmission power value of the uplink channel calculated on each carrier unchanged.

Step 304: if the sum of the transmission power of the uplink channels on the carriers in the same frequency band does not exceed the maximum transmission power of the frequency band after the power reduction operation, the UE reduces the power of the uplink channel transmission power on the carriers in the frequency band based on the maximum transmission power of the frequency band so as to ensure that the sum of the transmission power of the uplink channels on the carriers in all the frequency bands does not exceed the maximum transmission power allowed by the UE after the power reduction operation.

Preferably, the UE preferentially reduces the transmit power of the uplink channel with the lowest priority on the carrier in the band based on the maximum transmit power of the frequency band, and reduces the transmit power in the same proportion for a plurality of uplink channels with the same priority on the carrier in the same band. In this embodiment, the priority of each uplink channel on a carrier in the same frequency band is greater than the priority of the PUCCH and greater than the priority of the PUSCH carrying UCI and greater than the priority of the PUSCH not carrying UCI, or greater than the priority of the PUCCH and greater than the priority of the PUSCH carrying UCI and greater than the priority of the PUSCH not carrying UCI.

The maximum transmission power of each frequency band in this embodiment may be configured independently and not related to each other. In this case, the UE also needs to determine whether the sum of the maximum transmission powers of all frequency bands exceeds the maximum transmission power allowed by the UE. Or, when configuring the maximum transmission power of the frequency bands, the sum of the maximum transmission power of each frequency band is configured not to exceed the maximum transmission power allowed by the UE, and in this case, the UE does not need to determine whether the sum of the maximum transmission power of all frequency bands exceeds the maximum transmission power allowed by the UE. As can be seen, the UE may not make a decision regarding the maximum transmit power allowed by the UE. When the UE determines the maximum allowed transmit power of the UE, it determines whether to first determine the maximum allowed transmit power of the UE or to first determine the maximum allowed transmit power of the frequency band, which is slightly different from the specific implementation, and is described in detail by several exemplary embodiments below.

Referring to fig. 4, the flow of the uplink power control method during maximum transmit power association configuration of the frequency band in this embodiment is as follows:

step 400: and the UE obtains the maximum transmission power of each frequency band through high-layer signaling or PDCCH signaling, wherein the sum of the maximum transmission power of each frequency band does not exceed the maximum transmission power allowed by the UE.

If the UE and the network side agree to obtain the maximum transmission power of each frequency band, for example, agree to average the maximum transmission power allowed by the UE with the maximum transmission power of each frequency band, the UE does not need to perform signaling notification, and does not need to perform step 400, and the UE obtains the maximum transmission power allowed by itself and the number of frequency bands.

Step 401: and the UE determines the transmitting power of the uplink channel on each carrier based on the maximum transmitting power of each carrier and the power control parameter corresponding to the carrier.

Step 402: and for each frequency band, the UE judges whether the sum of the transmitting power of each uplink channel on the carrier in the same frequency band exceeds the maximum transmitting power of the frequency band.

Step 403: and if the uplink power value does not exceed the preset value, the UE keeps the transmission power value of the uplink channel calculated on each carrier unchanged.

Step 404: and if the maximum transmission power exceeds the maximum transmission power of the frequency band, the UE reduces the power of the uplink channel transmission power on the carrier wave in the frequency band.

Preferably, the UE preferentially reduces the transmit power of the uplink channel with the lowest priority on the carrier in the frequency band (band) based on the maximum transmit power of the frequency band, and the UE reduces the transmit power in the same proportion for a plurality of uplink channels with the same priority on the carrier in the same band. In this embodiment, the priority of each uplink channel on a carrier in the same frequency band is greater than the priority of the PUCCH and greater than the priority of the PUSCH carrying UCI and greater than the priority of the PUSCH not carrying UCI, or greater than the priority of the PUCCH and greater than the priority of the PUSCH carrying UCI and greater than the priority of the PUSCH not carrying UCI.

Specifically, for the PUCCH and the PUSCH transmitted in the same band, the priority of power allocation is that the priority of the PUSCH carrying UCI with the priority of the PUCCH > is greater than the priority of the PUSCH not carrying UCI, that is, the transmission power of the PUCCH is preferentially ensured, and in the remaining available transmission power of the band, the power of the PUSCH carrying UCI is ensured not to be reduced, and the power of the PUSCH not carrying UCI is reduced so that the sum of the transmission powers of all channels in the band does not exceed the maximum transmission power of the band; or, if there is PRACH transmission, the priority of power allocation is that the priority of PUCCH > the priority of PRACH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI, or the priority of PRACH > the priority of PUCCH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI, that is, the transmit power of PUCCH or PRACH is preferentially ensured, in the remaining available transmit power of this band, the PUSCH carrying UCI is ensured not to be reduced, and the power of PUSCH not carrying UCI is reduced to satisfy that the sum of the transmit powers of all channels in this band does not exceed the maximum transmit power of this band. For uplink channels with the same priority and transmitted in the same band, for example, multiple PUSCHs not carrying UCI, multiple PUSCHs carrying UCI, multiple SRSs, or multiple PRACH reduce the same proportional power, so as to satisfy that the sum of the transmit powers of all carriers in the band does not exceed the band maximum transmit power of the band.

For example, the UE aggregates carriers 1 and2 in band1 and carriers 3, 4, and 5 in band2 for uplink transmission, where each band is configured with a special carrier as a carrier for transmitting PUCCH (i.e., each band is configured with an extended carrier special cell (Ecell), similar to Pcell in Rel-10), as shown in fig. 5, the specific behavior of the UE is as follows:

the UE determines the band maximum transmitting power corresponding to each band through high-layer signaling: the band1 is configured to have a maximum transmission power P_CMAX，1The band2 is configured with a maximum transmission power P_CMAX，2And satisfyWherein P is_CMAXThe maximum allowed transmit power for the UE.

The UE calculates PUCCH transmit power P in band1 and band2 according to formula (1) and b-1 (representing band1) or b-2 (representing band2), respectively_PUCCH，1And P_PUCCH，2Wherein b is a band number; calculating the PUSCH transmission power P of the band1 and the band2 without simultaneous transmission of PUCCH on one carrier according to the formula (2) and b-1 or b-2 respectively_{PUSCH，2，1}、P_{PUSCH，4，2}、P_{PUSCH，5，2}(ii) a Calculating the PUSCH transmission power P with PUCCH simultaneously on one carrier in band2 according to equation (3) and b ═ 2_{PUSCH，3，2}；

<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mn>0</mn> <mo>_</mo> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>PL</mi> <mrow> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>h</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <msub> <mi>n</mi> <mi>CQI</mi> </msub> <mo>,</mo> <msub> <mi>n</mi> <mi>HARQ</mi> </msub> <mo>,</mo> <msub> <mi>n</mi> <mi>SR</mi> </msub> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&Delta;</mi> <mrow> <mi>F</mi> <mo>_</mo> <mi>PUCC</mi> <msub> <mi>H</mi> <mi>b</mi> </msub> </mrow> </msub> <mrow> <mo>(</mo> <mi>F</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&Delta;</mi> <mi>TxDb</mi> </msub> <mrow> <mo>(</mo> <msup> <mi>F</mi> <mo>&prime;</mo> </msup> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>g</mi> <mi>b</mi> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> </mrow> </math> Formula (1)

<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <msub> <mi>P</mi> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <mn>10</mn> <msub> <mi>log</mi> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mi>M</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>P</mi> <mrow> <mi>O</mi> <mo>_</mo> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&alpha;</mi> <mrow> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mi>PL</mi> <mrow> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>&Delta;</mi> <mrow> <mi>TF</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>f</mi> <mrow> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> </mrow> </math> Formula (2)

<math> <mrow> <msub> <mi>P</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mfenced open='{' close='}'> <mtable> <mtr> <mtd> <mn>10</mn> <msub> <mi>log</mi> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>,</mo> </mtd> </mtr> <mtr> <mtd> <mn>10</mn> <msub> <mi>log</mi> <mn>10</mn> </msub> <mrow> <mo>(</mo> <msub> <mi>M</mi> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>P</mi> <mrow> <mi>O</mi> <mo>_</mo> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>&alpha;</mi> <mrow> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mi>PL</mi> <mrow> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>+</mo> <msub> <mi>&Delta;</mi> <mrow> <mi>TF</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>+</mo> <msub> <mi>f</mi> <mrow> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mtd> </mtr> </mtable> </mfenced> </mrow> </math> Formula (3)

The UE judges whether the sum of the transmitting power of a plurality of carriers in each band exceeds the band maximum transmitting power of the band: for band1, it is judged

The UE may send data on PUCCH and PUSCH in band1 directly at the calculated power; for band2, it is judged ${\hat{P}}_{\mathrm{PUCCH},2}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{3,2}}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{4,2}}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{5,2}}>{\hat{P}}_{\mathrm{CMAX},2},$ The UE needs to reduce the transmit power in band2 to satisfy formula (4), that is, it is guaranteed that the transmit power of PUCCH is not reduced preferentially, the remaining available band power preferentially satisfies PUSCH carrying UCI, and power is reduced proportionally for PUSCH not carrying UCI, so that the total transmit power of multiple channels in band2 does not exceed the band2 maximum transmit power, where b is 2, j is 3, w (i) is a power reduction coefficient, the values of w (i) are the same for all PUSCHs, and w (i) of a specific PUSCH may be 0 (i.e., power may be reduced to 0), and the UE transmits data on each uplink channel in band2 according to the transmit power after the power reduction operation.

${\hat{P}}_{\mathrm{PUSCH},j,b}\left(i\right)=\min ({\hat{P}}_{\mathrm{PUSCH},j,b}\left(i\right),({\hat{P}}_{\mathrm{CMAX},b}\left(i\right)-{\hat{P}}_{\mathrm{PUCCH},b}\left(i\right)))$ And <math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>c</mi> <mo>&NotEqual;</mo> <mi>j</mi> </mrow> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> formula (4)

It should be noted that, in the above embodiments, when there is no PUCCH transmission,

when there is no PUSCH transmission carrying UCI,

the above procedure is equally applicable. In the above process, it is noted thatIs P_XLinear threshold of, e.g.

The constant coefficient may be set according to actual conditions, and X represents an uplink channel for which power is calculated.

For another example, carrier 1, carrier 2, and carrier 3 in the UE aggregation band1, and carrier 4 and carrier 5 in the band2 perform uplink transmission, and only one Pcel1 in multiple bands exists for PUCCH transmission, as shown in fig. 6, the specific behavior of the UE is as follows:

the UE and the network side agree on the maximum transmit power of the band corresponding to each band: band1 has a band maximum transmission power of P_CMAX，1Band2 has a maximum band transmit power of P_CMAX，2And satisfy

Wherein P is_CMAXThe maximum allowed transmit power for the UE.

The UE calculates PUCCH transmit power P in band1 according to formula (1) and b ═ 1_PUCCH，1Wherein b is a band number; and respectively calculating PUSCH transmission power P on corresponding carriers in band1 and band2 according to the formula (2) and b-1 and b-2_{PUSCH，2，1}、P_{PUSCH，3，1}、P_{PUSCH，4，2}、P_{PUSCH，5，2}。

The UE judges whether the sum of the transmitting power of a plurality of carriers in each band exceeds the band maximum transmitting power of the band: for band1, it is judged

The transmission power in the band1 needs to be reduced to satisfy formula (5), that is, it is preferentially ensured that the transmission power of the PUCCH is not reduced, the power is reduced in an equal proportion to the PUSCH not carrying UCI, so as to satisfy that the total transmission power of a plurality of channels in the band1 does not exceed the maximum transmission power of the band1, where b is 1, w (i) is a power reduction coefficient, the values are the same for all PUSCHs, and w (i) of a specific PUSCH can be 0 (that is, the power can be reduced to 0), and the UE transmits each uplink channel in the band1 according to the transmission power after power reduction; for band2, it is judged

Data on multiple PUSCHs in band2 may be sent directly at the calculated power.

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>c</mi> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> Formula (5)

It should be noted that, in the above embodiments, when there is no PUCCH transmission,

the above procedure is equally applicable.

Taking SRS as an example, the UE aggregates carrier 1 and carrier 2 in band1 and carrier 3 and carrier 4 in band2 for uplink transmission, as shown in fig. 7, the specific behavior of the UE is as follows:

the UE determines the band maximum transmitting power corresponding to each band through high-layer signaling: the band1 is configured to have a maximum transmission power P_CMAX，1The band2 is configured with a maximum transmission power P_CMAX，2And satisfy

Wherein P is_CMAXThe maximum allowed transmit power for the UE.

The UE calculates SRS transmission power P in band1 and band2 according to formula (6) and b-1 and b-2, respectively_SRS，1，1、P_SRS，2，1And P_SRS，3，2Wherein b is a band number.

P_SRS，c，b(i)＝min{P_CMAX，c，b(i)，P_{SRS_OFFSET，c，b}(m)+10log₁₀(M_SRS，c，b)+P_{O_PUSCH，c，b}(j)+α_c，b(j)·PL_c，b+f_c，b(i) Equation (6)

The UE judges whether the sum of the transmitting power of a plurality of carriers in each band exceeds the band maximum transmitting power of the band: for band1, it is judged

The transmission power in band1 needs to be reduced to satisfy equation (7)

That is, the power is reduced proportionally for all SRSs in the band1, so that the total transmission power of the multiple SRSs in the band1 does not exceed the band1 maximum transmission power, where b is 1, w (i) is a power reduction coefficient, and for all SRS (including periodic SRS and aperiodic SRS) values being the same, the UE transmits data on each SRS in the band1 according to the power-reduced transmission power; for band2, it is judged

The SRS in band2 may be transmitted directly in terms of the calculated power.

Referring to fig. 8, in this embodiment, the flow of the method for performing uplink power control based on the maximum transmit power allowed by the UE when the maximum transmit power of the frequency band is configured independently is as follows:

step 800: and the UE obtains the maximum transmitting power of each frequency band through high-layer signaling or PDCCH signaling.

If the UE and the network side agree to obtain the maximum transmission power of each frequency band, for example, agree to average the maximum transmission power allowed by the UE with the maximum transmission power of each frequency band, the UE does not need to perform signaling notification, and does not need to perform step 800, and the UE obtains the maximum transmission power allowed by itself and the number of frequency bands.

Step 801: and the UE determines the transmitting power of the uplink channel on each carrier based on the maximum transmitting power of each carrier and the power control parameter corresponding to the carrier.

Step 802: the UE determines whether the sum of the transmit powers of the uplink channels on the carriers in all the frequency bands exceeds the maximum transmit power allowed by the UE, if so, continues to step 803, otherwise continues to step 804.

Step 803: and the UE reduces the maximum transmitting power of each frequency band based on the maximum transmitting power allowed by the UE so as to ensure that the sum of the maximum transmitting powers of all frequency bands does not exceed the maximum transmitting power allowed by the UE after the power reduction operation. Execution continues with step 804.

Preferably, the UE reduces the maximum transmit power of each frequency band in equal proportion based on the maximum transmit power allowed by the UE; or the UE reduces the maximum transmitting power of each frequency band according to the power reduction proportionality coefficient of each frequency band based on the maximum transmitting power allowed by the UE, wherein the power reduction proportionality coefficients of the frequency bands are not completely the same, and the power reduction proportionality coefficient of each frequency band is not less than 0 and not more than 1. The power reduction proportion coefficient of each frequency band is predetermined by the UE and the network side, or configured to the UE by the network side through a high-level signaling or a PDCCH signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling and a Media Access Control (MAC) signaling.

Step 804: for each frequency band, the UE determines whether the sum of the transmit powers of the uplink channels on the carriers in the frequency band exceeds the maximum transmit power of the frequency band based on the maximum transmit power of the frequency band after the power reduction operation, if so, continues to step 805, otherwise, continues to step 806.

Step 805: and the UE performs power reduction on the uplink channel transmitting power on the carrier in the frequency band based on the maximum transmitting power of the frequency band so as to ensure that the sum of the transmitting powers of the uplink channels on the carriers in the same frequency band does not exceed the maximum transmitting power of the frequency band after the power reduction operation.

Preferably, the UE preferentially reduces the transmit power of the uplink channel with the lowest priority on the carrier in the frequency band (band) based on the maximum transmit power of the frequency band, and the UE reduces the transmit power in the same proportion for a plurality of uplink channels with the same priority on the carrier in the same band. In this embodiment, the priority of each uplink channel on a carrier in the same frequency band is greater than the priority of the PUCCH and greater than the priority of the PUSCH carrying UCI and greater than the priority of the PUSCH not carrying UCI, or greater than the priority of the PUCCH and greater than the priority of the PUSCH carrying UCI and greater than the priority of the PUSCH not carrying UCI.

Specifically, for the PUCCH and the PUSCH transmitted in the same band, the priority of power allocation is that the priority of the PUSCH carrying UCI with the priority of the PUCCH > is greater than the priority of the PUSCH not carrying UCI, that is, the transmission power of the PUCCH is preferentially ensured, and in the remaining available transmission power of the band, the power of the PUSCH carrying UCI is ensured not to be reduced, and the power of the PUSCH not carrying UCI is reduced so that the sum of the transmission powers of all channels in the band does not exceed the maximum transmission power of the band; or, if there is PRACH transmission, the priority of power allocation is that the priority of PUCCH > the priority of PRACH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI, or the priority of PRACH > the priority of PUCCH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI, that is, the transmit power of PUCCH or PRACH is preferentially ensured, in the remaining available transmit power of this band, the PUSCH carrying UCI is ensured not to be reduced, and the power of PUSCH not carrying UCI is reduced to satisfy that the sum of the transmit powers of all channels in this band does not exceed the maximum transmit power of this band. And reducing the power of the same proportion for the uplink channels with the same priority and transmitted in the same band so as to ensure that the sum of the transmission power of all carriers in the band does not exceed the band maximum transmission power of the band.

Step 806: and the UE keeps the transmission power value of the uplink channel calculated on each carrier unchanged.

For example, carrier 1 and carrier 2 in band1, and carrier 3, carrier 4, and carrier 5 in band2 are aggregated by the UE for uplink transmission, each band is configured with a special carrier as a carrier for transmitting PUCCH (i.e., each band is configured with an extended carrier E-cell, similar to Pcell in Rel-10), as shown in fig. 5, the specific behavior of the UE is as follows:

the UE determines the band maximum transmitting power corresponding to each band through high-layer signaling: the band1 is configured to have a maximum transmission power P_CMAX，1The band2 is configured with a maximum transmission power P_CMAX，2，P_CMAXMaximum transmission power allowed for UE, and P_CMAX，1、P_CMAX，2And P_CMAXAnd (4) independent configuration.

The UE calculates PUCCH transmit power P in band1 and band2 according to formula (1) and b-1 and b-2, respectively_PUCCH，1And P_PUCCH，2Wherein b is a band number; calculating the PUSCH transmission power P of the band1 and the band2 without simultaneous transmission of PUCCH on one carrier according to the formula (2) and the formula b 1 and b 2 respectively_{PUSCH，2，1}、P_{PUSCH，4，2}、P_{PUSCH，5，2}(ii) a Calculating the PUSCH transmission power P of band2 with PUCCH on one carrier according to the formula (3) and the formula (b 2)_{PUSCH，3，2}。

The UE first determines whether the sum of the transmit powers of all carriers in all bands exceeds the maximum transmit power allowed by the UE.

When it is judged that ${\hat{P}}_{\mathrm{PUCCH},1}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{2,1}}+{\hat{P}}_{\mathrm{PUCCH},2}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{3,2}}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{4,2}}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{5,2}}>{\hat{P}}_{\mathrm{CMAX}}$ In time, according to the formula (8)

The band maximum transmit power of each band is reduced proportionally, or according to equation (9)The band maximum transmitting power of each band is subjected to power reduction (non-equal proportion) based on the power reduction proportion coefficient corresponding to the band, and the band maximum transmitting power P of each band after power reduction is obtained_CMAX，1′、P_CMAX，2′；

The UE further determines whether the sum of the transmit powers of the multiple carriers in each band exceeds the band maximum transmit power after the band power is reduced: for band1, it is judged

The power reduction is needed, i.e. the maximum transmitting power P after the band1 power reduction_CMAX，2' preferably satisfies PUCCH transmission power, and reduces PUSCH transmission power to satisfy band1 maximum transmission power, after power reduction, the PUSCH transmission power on carrier 2 is

The UE calculates the power according to the PUCCH on the carrier 1 and sends the power and the PUSCH power with the reduced power on the carrier 2; for band2, it is judged <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>3,2</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>4,2</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>5,2</mn> </mrow> </msub> <mo>></mo> <msup> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>CMAX</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mo>&prime;</mo> </msup> <mo>,</mo> </mrow> </math> The transmit power in the band2 needs to be reduced to satisfy formula (10), that is, it is preferentially ensured that the transmit power of the PUCCH is not reduced, the remaining available band power preferentially satisfies the PUSCH carrying UCI, and the power is reduced proportionally for the PUSCH not carrying UCI, so that the total transmit power of multiple channels in the band2 does not exceed the band2 maximum transmit power, where b is 2, j is 3, w (i) is a power reduction coefficient, w (i) is the same for all PUSCHs, and w (i) of a specific PUSCH may be 0 (i.e., the power may be reduced to 0), and the UE transmits each uplink channel in the band2 according to the transmit power after power reduction.

<math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mi>min</mi> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>,</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <msup> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&prime;</mo> </msup> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> And <math> <mrow> <munder> <mi>&Sigma;</mi> <mrow> <mi>c</mi> <mo>&NotEqual;</mo> <mi>j</mi> </mrow> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <msup> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&prime;</mo> </msup> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>j</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> formula (10)

When it is judged that <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>2,1</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>3,2</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>4,2</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>5,2</mn> </mrow> </msub> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> </mrow> </math> When the band is in use, the band maximum transmitting power of each band does not need to be reduced; the UE further determines whether the sum of the transmit powers of the multiple carriers in each band exceeds the band maximum transmit power of the band: for band1, it is judged

Data on PUCCH and PUSCH in band1 may be transmitted directly in accordance with the calculated power; for band2, it is judged ${\hat{P}}_{\mathrm{PUCCH},2}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{3,2}}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{4,2}}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{5,2}}>{\hat{P}}_{\mathrm{CMAX},2},$ The transmit power in the band2 needs to be reduced to satisfy formula (4), that is, it is preferentially ensured that the transmit power of the PUCCH is not reduced, the remaining available power of the band preferentially satisfies the PUSCH carrying UCI, and the power is reduced proportionally for the PUSCH not carrying UCI, so that the total transmit power of multiple channels in the band2 does not exceed the maximum transmit power of the band2, wherein the total transmit power of multiple channels in the band2 does not exceed the maximum transmit power of the band2b is 2, j is 3, w (i) is a power reduction coefficient, the value is the same for all PUSCHs, w (i) of a specific PUSCH can be 0 (that is, the power can be reduced to 0), and the UE transmits each uplink channel in the band2 according to the transmission power after the power reduction.

It should be noted that, in the above embodiments, when there is no PUCCH transmission,

when there is no PUSCH transmission carrying UCI,

the above procedure is equally applicable.

For another example, the UE aggregates carrier 1, carrier 2, and carrier 3 in band1, and carrier 4 and carrier 5 in band2 for uplink transmission, and only one Pcell transmission PUCCH exists in multiple bands, as shown in fig. 6, the specific behavior of the UE is as follows:

the UE determines the band maximum transmitting power corresponding to each band through high-layer signaling: the band1 is configured to have a maximum transmission power P_CMAX，1The band2 is configured with a maximum transmission power P_CMAX，2，P_CMAXMaximum transmission power allowed for UE, and P_CMAX，1、P_CMAX，2And P_CMAXAnd (4) independent configuration.

The UE calculates the PUCCH transmission power P of the carrier 1 in the band1 according to the formula (1) and the formula that b is 1_PUCCH，1Wherein b is a band number; calculating the PUSCH transmitting power P on the corresponding carrier (such as carrier 2-5) according to the formula (2) and b-1 and b-2 respectively_{PUSCH，2，1}、P_{PUSCH，3，1}、P_{PUSCH，4，2}、P_{PUSCH，5，2}。

The UE first determines whether the sum of the transmit powers of all carriers in all bands exceeds the maximum transmit power allowed by the UE:

when it is judged that ${\hat{P}}_{\mathrm{PUCCH},1}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{2,1}}+{\hat{P}}_{\mathrm{PUCCH},\mathrm{3,1}}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{4,2}}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{5,2}}>{\hat{P}}_{\mathrm{CMAX}}$ In the process, the UE needs to perform equal proportion reduction on the band maximum transmit power of each band according to formula (8), or perform power reduction (non-equal proportion) on the band maximum transmit power of each band based on the band corresponding power reduction proportion coefficient according to formula (9), to obtain the band maximum transmit power P of each band after power reduction_PMAX，1′、P_CMAX，2′；

The UE further determines whether the sum of the transmit powers of the multiple carriers in each band exceeds the band maximum transmit power after the band power is reduced: for band1, it is judged

The transmit power in band1 needs to be reduced to satisfy formula (11), i.e. preferentially ensuring that the transmit power of PUCCH is not reduced, and proportionally reducing the power of PUSCH not carrying UCI to satisfy that the total transmit power of multiple channels in band1 does not exceed the band1 maximum transmit power, where b is 1, w (i) is a power reduction coefficient, and for all PUSCH valuesSimilarly, w (i) corresponding to a specific PUSCH may be 0 (that is, the power may be reduced to 0), and the UE sends data on each uplink channel in band1 according to the reduced transmission power; for band2, it is judgedThe transmit power in the band2 needs to be reduced to satisfy formula (12), that is, the power is reduced proportionally for a plurality of PUSCHs, so that the total transmit power of a plurality of channels in the band2 does not exceed the band2 maximum transmit power, where b is 2, w (i) is a power reduction coefficient, the value is the same for all PUSCHs, and w (i) corresponding to a specific PUSCH can be 0 (that is, the power can be reduced to 0), and the UE transmits data on each uplink channel in the band2 according to the transmit power after power reduction.

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>c</mi> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <mrow> <mo>(</mo> <msup> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mo>&prime;</mo> </msup> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>-</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>)</mo> </mrow> </mrow> </math> Formula (11)

<math> <mrow> <munder> <mi>&Sigma;</mi> <mi>c</mi> </munder> <mi>w</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&CenterDot;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mi>c</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>CMAX</mi> <mo>,</mo> <mi>b</mi> </mrow> </msub> <msup> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>&prime;</mo> </msup> </mrow> </math> Formula (12)

When it is judged that <math> <mrow> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>2,1</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUCCH</mi> <mo>,</mo> <mn>3,1</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>4,2</mn> </mrow> </msub> <mo>+</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mrow> <mi>PUSCH</mi> <mo>,</mo> <mn>5,2</mn> </mrow> </msub> <mo>&le;</mo> <msub> <mover> <mi>P</mi> <mo>^</mo> </mover> <mi>CMAX</mi> </msub> </mrow> </math> When the band is in use, the band maximum transmitting power of each band does not need to be reduced; the UE further determines whether the sum of the transmit powers of the multiple carriers in each band exceeds the band maximum transmit power of the band: for band1, it is judged

Power reduction needs to be performed in the band1 to satisfy formula (5), that is, it is preferentially ensured that the transmission power of the PUCCH is not reduced, power is reduced in an equal proportion to the PUSCH not carrying UCI, so that the total transmission power of multiple channels in the band1 does not exceed the maximum transmission power of the band1, where b is 1, w (i) is a power reduction coefficient, the values of all PUSCHs are the same, and w (i) corresponding to a specific PUSCH may be 0 (that is, power may be reduced to 0), and the UE transmits data on each uplink channel in the band1 according to the transmission power after power reduction; for band2, it is judged

Data on multiple PUSCHs in band2 may be sent directly in terms of calculated power.

It should be noted that, in the above embodiments, when there is no PUCCH transmission,

the above procedure is equally applicable.

Taking SRS as an example, the UE aggregates carrier 1 and carrier 2 in band1 and carrier 3 and carrier 4 in band2 for uplink transmission, as shown in fig. 7, the specific behavior of the UE is as follows:

the UE determines the band maximum transmitting power corresponding to each band through high-layer signaling: the band1 is configured to have a maximum transmission power P_CMAX，1The band2 is configured with a maximum transmission power P_CMAX，2，P_CMAXMaximum transmission power allowed for UE, and P_CMAX，1、P_CMAX，2And P_CMAXAnd (4) independent configuration.

The UE calculates SRS transmission power P in band1 and band2 according to formula (6) and b-1 and b-2, respectively_SRS，1，1、P_SRS，2，1And P_SRS，3，2Wherein b is a band number.

The UE first determines whether the sum of the transmit powers of all carriers in all bands exceeds the maximum transmit power allowed by the UE:

when it is judged that

In time, the UE needs to perform equal proportion reduction on the band maximum transmit power of each band according to formula (8), or perform power reduction (non-equal proportion) based on the power reduction proportion coefficient corresponding to the band on the band maximum transmit power of each band according to formula (9), to obtain the band maximum transmit power P of each band after power reduction_CMAX，1′、P_CMAX，2′；

The UE determines whether the sum of the transmit powers of multiple carriers in each band exceeds the band maximum transmit power after the band power is reduced: for band1, it is judged

The band1 needs to be powered down to satisfy equation (13)

That is, the power is reduced proportionally for all SRSs in the band1, so as to satisfy that the total transmission power of the multiple SRSs in the band1 does not exceed the band1 maximum transmission power, where b is 1, w (i) is a power reduction coefficient, which is the same for all SRS (including periodic SRS and aperiodic SRS), and the UE transmits each SRS according to the transmission power after power reduction; for band2, it is judged

The SRS in band2 may be transmitted directly in terms of the calculated power.

When it is judged that

When the band is in use, the band maximum transmitting power of each band does not need to be reduced; the UE further determines whether the sum of the transmit powers of the multiple carriers in each band exceeds the band maximum transmit power of the band: for band1, it is judged

The SRS in band2 can be transmitted directly at the calculated power; for band2, it is judged

The SRS in band2 may be transmitted directly at the calculated power.

Referring to fig. 9, in this embodiment, the flow of the method for performing uplink power control based on the maximum transmit power allowed by the frequency band when the maximum transmit power of the frequency band is configured independently is as follows:

step 900: and the UE obtains the maximum transmitting power of each frequency band through high-layer signaling or PDCCH signaling.

If the UE and the network side agree to obtain the maximum transmission power of each frequency band, for example, agree to average the maximum transmission power allowed by the UE with the maximum transmission power of each frequency band, the UE does not need to perform signaling notification, and does not need to execute step 900, and the UE obtains the maximum transmission power allowed by itself and the number of frequency bands.

Step 901: and the UE determines the transmitting power of the uplink channel on each carrier based on the maximum transmitting power of each carrier and the power control parameter corresponding to the carrier.

Step 902: the UE judges whether the sum of the transmitting power of each uplink channel on the carrier wave in the same frequency band exceeds the maximum transmitting power of the frequency band.

Step 903: the UE records a first type of frequency band that exceeds the maximum transmit power of the frequency band and a second type of frequency band that does not exceed the maximum transmit power of the frequency band.

Step 904: the UE determines whether the sum of the total transmit power of each frequency band in the second frequency band and the maximum transmit power of each frequency band in the first frequency band exceeds the maximum transmit power allowed by the UE, if so, continues to step 905, otherwise continues to step 906, where the total transmit power of each frequency band in the second frequency band is the sum of the transmit powers of the uplink channels on the carriers in the frequency band.

Step 905: and the UE reduces the maximum transmitting power of each frequency band based on the maximum transmitting power allowed by the UE so as to ensure that the sum of the maximum transmitting power of each frequency band does not exceed the maximum transmitting power allowed by the UE after the power reduction operation. Or the UE reduces the maximum transmitting power of each frequency band in the first class frequency band and the total transmitting power of each frequency band in the second class frequency band based on the maximum transmitting power allowed by the UE, so that the sum of the maximum transmitting power of each frequency band in the first class frequency band and the total transmitting power of each frequency band in the second class frequency band after power reduction does not exceed the maximum transmitting power allowed by the UE. Step 906 is continued.

Preferably, the UE reduces the maximum transmit power of each frequency band in equal proportion based on the maximum transmit power allowed by the UE; or the UE reduces the maximum transmitting power of each frequency band according to the power reduction proportionality coefficient of each frequency band based on the maximum transmitting power allowed by the UE, wherein the power reduction proportionality coefficients of the frequency bands are not completely the same, and the power reduction proportionality coefficient of each frequency band is not less than 0 and not more than 1. The power reduction proportion coefficient of each frequency band is predetermined by the UE and the network side, or configured to the UE by the network side through a high-level signaling or a PDCCH signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling and a Media Access Control (MAC) signaling.

Step 906: for each frequency band, the UE determines whether the sum of the transmit powers of the uplink channels on the carriers in the frequency band exceeds the maximum transmit power of the frequency band based on the maximum transmit power of the frequency band after the power reduction operation, if so, continues to step 907, otherwise continues to step 908.

Step 907: and the UE performs power reduction on the uplink channel transmitting power on the carrier in the frequency band based on the maximum transmitting power of the frequency band so as to ensure that the sum of the transmitting powers of the uplink channels on the carriers in the same frequency band does not exceed the maximum transmitting power of the frequency band after the power reduction operation.

Preferably, the UE preferentially reduces the transmit power of the uplink channel with the lowest priority on the carrier in the frequency band (band) based on the maximum transmit power of the frequency band, and the UE reduces the transmit power in the same proportion for a plurality of uplink channels with the same priority on the carrier in the same band. In this embodiment, the priority of each uplink channel on a carrier in the same frequency band is greater than the priority of the PUCCH and greater than the priority of the PUSCH carrying UCI and greater than the priority of the PUSCH not carrying UCI, or greater than the priority of the PUCCH and greater than the priority of the PUSCH carrying UCI and greater than the priority of the PUSCH not carrying UCI.

Specifically, for the PUCCH and the PUSCH transmitted in the same band, the priority of power allocation is that the priority of the PUSCH carrying UCI with the priority of the PUCCH > is greater than the priority of the PUSCH not carrying UCI, that is, the transmission power of the PUCCH is preferentially ensured, and in the remaining available transmission power of the band, the power of the PUSCH carrying UCI is ensured not to be reduced, and the power of the PUSCH not carrying UCI is reduced so that the sum of the transmission powers of all channels in the band does not exceed the maximum transmission power of the band; or, if there is PRACH transmission, the priority of power allocation is that the priority of PUCCH > the priority of PRACH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI, or the priority of PRACH > the priority of PUCCH > the priority of PUSCH carrying UCI > the priority of PUSCH not carrying UCI, that is, the transmit power of PUCCH or PRACH is preferentially ensured, in the remaining available transmit power of this band, the PUSCH carrying UCI is ensured not to be reduced, and the power of PUSCH not carrying UCI is reduced to satisfy that the sum of the transmit powers of all channels in this band does not exceed the maximum transmit power of this band. And reducing the power of the same proportion for the uplink channels with the same priority and transmitted in the same band so as to ensure that the sum of the transmission power of all carriers in the band does not exceed the band maximum transmission power of the band.

Step 908: and the UE keeps the transmission power value of the uplink channel calculated on each carrier unchanged.

For example, carrier 1 and carrier 2 in band1, and carrier 3, carrier 4, and carrier 5 in band2 are aggregated by the UE for uplink transmission, each band is configured with a special carrier as a carrier for transmitting PUCCH (i.e., each band is configured with an extended carrier E-cell, similar to Pcell in Rel-10), as shown in fig. 5, the specific behavior of the UE is as follows:

the UE determines the band maximum transmitting power corresponding to each band through high-layer signaling: the band1 is configured to have a maximum transmission power P_CMAX，1The band2 is configured with a maximum transmission power P_CMAX，2，P_CMAXMaximum transmission power allowed for UE, and P_CMAX，1、P_CMAX，2And P_CMAXAnd (4) independent configuration.

The UE calculates PUCCH transmit power P in band1 and band2 according to formula (1) and b-1 and b-2, respectively_PUCCH，1And P_PUCCH，2Wherein b is a band number; calculating the PUSCH transmission power P of the band1 and the band2 without simultaneous transmission of PUCCH on one carrier according to the formula (2) and the formula b 1 and b 2 respectively_{PUSCH，2，1}、P_{PUSCH，4，2}、P_{PUSCH，5，2}(ii) a Calculating the PUSCH transmission power P of band2 with PUCCH on one carrier according to the formula (3) and the formula (b 2)_{PUSCH，3，2}。

The UE first determines whether the sum of the transmit powers of multiple carriers in each band exceeds the band maximum transmit power of the band: for band1, assume that a decision is made

Temporarily not reducing the transmission power of the channel in band 1; for band2, assume that a decision is made ${\hat{P}}_{\mathrm{PUCCH},2}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{3,2}}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{4,2}}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{5,2}}>{\hat{P}}_{\mathrm{CMAX},2},$ A power reduction is required.

The UE further determines whether the sum of the transmit power of all carriers in the band that does not need to be power-reduced (i.e. the total transmit power of the band) and the band maximum transmit power of the band that needs to be power-reduced exceeds the maximum transmit power allowed by the UE:

when it is judged that ${\hat{P}}_{\mathrm{PUCCH},1}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{2,1}}+{\hat{P}}_{\mathrm{CMAX},2}>{\hat{P}}_{\mathrm{CMAX}}$ Then:

the method A comprises the following steps: the UE performs equal proportion reduction on the band maximum transmitting power of each band according to a formula (8), or performs power reduction (non-equal proportion) based on a power reduction proportion coefficient corresponding to the band on the band maximum transmitting power of each band according to a formula (9), so as to obtain the band maximum transmitting power P of each band after power reduction_CMAX，1′、P_CMAX，2′；

Then, further judging whether the sum of the transmission power of the multiple carriers in each band exceeds the band maximum transmission power after the power reduction of the band (only the band for which the actual transmission power does not exceed the band maximum transmission power is judged to be further judged based on the band maximum transmission power after the power reduction): for band1, it is judged(assuming that the band maximum transmit power after power reduction calculated based on equations (8) and (9) may be different in practice, and the result of determining whether the power is limited or not based on different band maximum transmit powers within one band may also be different), the maximum transmit power P after power reduction based on band1 is required_CMAX，1' preferably, the transmission power of the PUCCH is satisfied, and the transmission power of the PUSCH is reduced to satisfy the band1 maximum transmission power after power reduction, namely, the PUSCH transmission power on the carrier 2 after power reduction is

The UE calculates the power according to the PUCCH on the carrier 1 and sends the power and the PUSCH power with the reduced power on the carrier 2; for band2, performing power reduction according to formula (10), i.e. preferentially ensuring that the transmission power of PUCCH is not reduced, preferentially satisfying the PUSCH carrying UCI with the remaining available band power, and reducing the power in equal proportion to the PUSCH not carrying UCI to satisfy that the total transmission power of multiple channels in band2 does not exceed the band after power reductiond2 maximum transmission power, where b is 2, j is 3, w (i) is a power reduction coefficient, the value is the same for all PUSCHs, w (i) for a specific PUSCH can be 0 (i.e. the power can be reduced to 0), and the UE transmits each uplink channel in the band2 according to the transmission power after power reduction.

The method B comprises the following steps: the UE takes the sum of the actual transmit powers of the channels inside the band (i.e. band1) that do not need to be power-reduced as the band maximum transmit power of the band (i.e. let us command that the UE shall set the band maximum transmit power of the band) And performing equal proportion reduction on the band maximum transmitting power of each band according to a formula (8), or performing power reduction (non-equal proportion) based on a power reduction proportion coefficient corresponding to the band on the band maximum transmitting power of each band according to a formula (9), and obtaining the band maximum transmitting power P of each band after power reduction_CMAX，1′、P_CMAX，2′；

Then UE further judges whether the sum of the transmitting power of a plurality of carriers in each band exceeds the band maximum transmitting power after the power of the band is reduced; or, preferably, considering that the total transmit power of the multiple channels inside each band in the method always exceeds the band maximum transmit power after power reduction, it may also not be determined, and the internal power reduction is directly performed on each band: for band1, the maximum transmission power P after reducing the power of band1_CMAX，1' preferably satisfies PUCCH transmission power and reduces PUSCH transmission power to satisfy band1 maximum transmission power, i.e. PUSCH transmission power on carrier 2 after power reduction isThe UE calculates the power according to the PUCCH on the carrier 1 and sends the power and the PUSCH power with the reduced power on the carrier 2; for band2, performing power reduction according to formula (10), i.e. preferentially ensuring that the transmission power of PUCCH is not reduced, preferentially satisfying the PUSCH carrying UCI with the remaining available band power, and reducing the power in equal proportion to the PUSCH not carrying UCI, so as to satisfy that the total transmission power of a plurality of channels in band2 does not exceed the power reductionThe subsequent band2 maximum transmission power, where b is 2, j is 3, w (i) is a power reduction coefficient, the value is the same for all PUSCHs, and w (i) of a specific PUSCH may be 0 (i.e., the power may be reduced to 0), and the UE transmits each uplink channel in the band2 according to the power-reduced transmission power.

Otherwise, when judging that

Then: the UE only needs to reduce the transmit power of the channels in band2 based on the maximum transmit power of band2 to satisfy formula (4), that is, it is preferentially ensured that the transmit power of the PUCCH is not reduced, the remaining available band power preferentially satisfies the PUSCH carrying UCI, and the power is reduced proportionally for the PUSCH not carrying UCI, so that the total transmit power of the multiple channels in band2 does not exceed the maximum transmit power of band2 after power reduction, where b is 2, j is 3, w (i) is a power reduction coefficient, the values of all PUSCHs are the same, and w (i) of a specific PUSCH may be 0 (that is, the power may be reduced to 0).

It should be noted that, in the above embodiments, when there is no PUCCH transmission,

when there is no PUSCH transmission carrying UCI,

the above procedure is equally applicable.

For another example, the UE aggregates carrier 1, carrier 2, and carrier 3 in band1, and carrier 4 and carrier 5 in band2 for uplink transmission, and only one Pcell transmission PUCCH exists in multiple bands, as shown in fig. 6, the specific behavior of the UE is as follows:

the UE determines the band maximum transmitting power corresponding to each band through high-layer signaling: the band1 is configured to have a maximum transmission power P_CMAX，1The band2 is configured with a maximum transmission power P_CMAX，2，P_CMAXMaximum transmission power allowed for UE, and P_CMAX，1、P_CMAX，2And P_CMAXAnd (4) independent configuration.

The UE calculates the PUCCH transmission power P of the carrier 1 in the band1 according to the formula (1) and the formula that b is 1_PUCCH，1Wherein b is a band number; calculating the PUSCH transmitting power P on the corresponding carrier (such as carrier 2-5) according to the formula (2) and b-1 and b-2 respectively_{PUSCH，2，1}、P_{PUSCH，3，1}、P_{PUSCH，4，2}、P_{PUSCH，5，2}。

The UE first determines whether the sum of the transmit powers of multiple carriers in each band exceeds the band maximum transmit power of the band: for band1, assume that a decision is made

Power reduction is required; for band2, assume that a decision is made

There is no need to power down the channels in band2 for the moment.

The UE further determines whether the sum of the transmit powers of all carriers in the band that does not need to be power-reduced and the band maximum transmit power of the band that needs to be power-reduced exceeds the maximum transmit power allowed by the UE:

when it is judged that ${\hat{P}}_{\mathrm{CMAX},1}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{4,2}}+{\hat{P}}_{\mathrm{PUSCH},\mathrm{5,2}}>{\hat{P}}_{\mathrm{CMAX}}$ Then:

the method A comprises the following steps: the UE performs equal proportion reduction on the band maximum transmitting power of each band according to a formula (8), or performs power reduction (non-equal proportion) based on a power reduction proportion coefficient corresponding to the band on the band maximum transmitting power of each band according to a formula (9), so as to obtain the band maximum transmitting power P of each band after power reduction operation_CMAX，1′、P_CMAX，2′；

Then, the UE further determines whether the sum of the transmit powers of the multiple carriers in each band exceeds the band maximum transmit power after the power reduction of the band (it may only be determined that the band for which the actual transmit power does not exceed the band maximum transmit power is based on the band maximum transmit power after the power reduction): for band1, performing power reduction according to formula (11), that is, preferentially ensuring that the transmission power of PUCCH is not reduced, and reducing power proportionally for a plurality of PUSCHs to satisfy that the total transmission power of a plurality of channels in band1 does not exceed the maximum transmission power of band1, where b is 1, w (i) is a power reduction coefficient, the values of all PUSCHs are the same, and w (i) corresponding to a specific PUSCH can be 0 (that is, the power can be reduced to 0), and the UE transmits data on each uplink channel in band1 according to the transmission power after power reduction; for band2, it is judged

(assuming that the band maximum transmit powers after power reduction calculated based on equations (8) and (9) may be different in practice, and the determination result of whether the power is limited or not based on different band maximum transmit powers within one band may also be different), the data on each uplink channel in band2 is directly transmitted according to the calculated power.

The method B comprises the following steps: the UE takes the sum of the actual transmit powers of the channels inside the band (i.e. band2) for which power reduction is not required as the sum of the actual transmit powers of the channels inside the bandband maximum transmit power (signaling)

) And performing equal proportion reduction on the band maximum transmitting power of each band according to a formula (8), or performing power reduction (non-equal proportion) based on a power reduction proportion coefficient corresponding to the band on the band maximum transmitting power of each band according to a formula (9), and obtaining the band maximum transmitting power P of each band after power reduction_CMAX，1′、P_CMAX，2′；

Then, the UE further determines whether the sum of the transmit powers of the multiple carriers in each band exceeds the band maximum transmit power after the power reduction of the band, or better, considering that the total transmit power of the multiple channels inside each band in the method always exceeds the band maximum transmit power after the power reduction, so that it may not be determined, and directly performs the internal power reduction on each band: for band1, performing power reduction according to formula (11), that is, preferentially ensuring that the transmission power of PUCCH is not reduced, and reducing power proportionally for a plurality of PUSCHs to satisfy that the total transmission power of a plurality of channels in band1 does not exceed the maximum transmission power of band1 after power reduction, where b is 1, w (i) is a power reduction coefficient, the value is the same for all PUSCHs, and w (i) of a specific PUSCH can be 0 (that is, power can be reduced to 350), and the UE transmits data on each uplink channel in band1 according to the transmission power after power reduction; for band2, power reduction is performed according to formula (12), that is, power is reduced proportionally for a plurality of PUSCHs, so that the total transmit power of a plurality of channels in band2 does not exceed the maximum transmit power of band2 after power reduction, where b is 2, w (i) is a power reduction coefficient, the value of w (i) is the same for all PUSCHs, and the corresponding w (i) of a specific PUSCH can be 0 (that is, power can be reduced to 0), and the UE transmits data on each uplink channel in band2 according to the transmit power after power reduction.

Otherwise, when judging that

Then: the UE only needs to base on the maximum transmit power pair ban of band1The transmission power of the channel in d1 is reduced to satisfy formula (5), that is, the transmission power of the PUCCH is preferentially ensured not to be reduced, the power is reduced proportionally for multiple PUSCHs to satisfy that the total transmission power of multiple channels in band1 does not exceed the maximum transmission power of band1, where b is 1, w (i) is a power reduction coefficient, the values of all PUSCHs are the same, and w (i) corresponding to a specific PUSCH can be 0 (that is, the power can be reduced to 0), the UE transmits data on each uplink channel in band1 according to the transmission power after power reduction, the UE does not need to reduce the power for band1, and directly transmits the data on each uplink channel in band2 according to the calculated power.

It should be noted that, in the above embodiments, when there is no PUCCH transmission,

the above procedure is equally applicable.

Taking SRS as an example, the UE first determines whether the sum of the transmit powers of multiple carriers in each band exceeds the band maximum transmit power of the band: for band1, assume that a decision is made

There is no need to power down the channels in band1 for the moment; for band2, assume that a decision is made

There is no need to power down the channels in band2 for the moment.

The UE further determines whether the sum of the transmit powers of all carriers in the band that does not need to be power-reduced and the band maximum transmit power of the band that needs to be power-reduced exceeds the maximum transmit power allowed by the UE:

when it is judged that ${\hat{P}}_{\mathrm{SRS},\mathrm{1,1}}+{\hat{P}}_{\mathrm{SRS},\mathrm{2,1}}+{\hat{P}}_{\mathrm{SRS},\mathrm{3,2}}>{\hat{P}}_{\mathrm{CMAX}}$ Then:

the method A comprises the following steps: the UE performs equal proportion reduction on the band maximum transmitting power of each band according to a formula (8), or performs power reduction (non-equal proportion) based on a power reduction proportion coefficient corresponding to the band on the band maximum transmitting power of each band according to a formula (9), so as to obtain the band maximum transmitting power P of each band after power reduction_CMAX，1′、P_CMAX，2′；

Then the UE further determines whether the sum of the transmit powers of the multiple carriers in each band exceeds the band maximum transmit power after the power reduction of the band: for band1, it is judged

The power of the band1 needs to be reduced to satisfy formula (13), that is, the power is reduced proportionally to all SRSs in the band1, so that the total transmission power of the multiple SRSs in the band1 does not exceed the maximum transmission power of the band1, where b is 1 and w (i) is a power reduction coefficient, and for all the SRS (including periodic SRS and aperiodic SRS) values to be the same, the UE transmits each SRS in the band1 according to the transmission power after power reduction; for band2, it is judgedThe SRS in band2 may be transmitted directly at the calculated power.

The method B comprises the following steps: the UE takes the sum of the actual transmit powers of the channels inside the band (i.e. band2) that do not need to be power-reduced as the band maximum transmit power of the band (i.e. let us command that the UE shall set the band maximum transmit power of the band

) And performing equal proportion reduction on the band maximum transmitting power of each band according to a formula (8), or performing power reduction (non-equal proportion) based on a power reduction proportion coefficient corresponding to the band on the band maximum transmitting power of each band according to a formula (9), and obtaining the band maximum transmitting power P of each band after power reduction_CMAX，1′、P_CMAX，2′；

Then, the UE further determines whether the sum of the transmit powers of the multiple carriers in each band exceeds the band maximum transmit power after the power reduction of the band, or better, considering that the total transmit power of the multiple channels inside each band in the method always exceeds the band maximum transmit power after the power reduction, so that it may not be determined, and directly performs the internal power reduction on each band: for band1, performing power reduction according to formula (13), that is, proportionally reducing power for all SRSs in band1 so as to satisfy that the total transmission power of multiple SRSs in band1 does not exceed the maximum transmission power of band1 after power reduction, where b is 1, and w (i) is a power reduction coefficient, and for all SRS (including periodic SRS and aperiodic SRS) values to be the same, the UE transmits each SRS in band1 according to the transmission power after power reduction; for band2, power reduction for SRS on carrier 3

The UE transmits the SRS in band2 at the reduced power transmission power.

Otherwise, when judging that

Then: the UE does not need to perform power reduction in any one band, and can directly transmit each SRS in band1 and band2 in accordance with the calculated power.

It should be noted that the SRS in this embodiment is also applicable when replaced by a PUSCH, PUCCH, or PRACH channel.

It should be noted that the Maximum transmit Power Allowed by the UE, the band Maximum transmit Power, and the carrier Maximum transmit Power in the above method and embodiment are powers with Power backoff taken into consideration, that is, powers of a Power backoff parameter MPR (Maximum Power Reduction, Maximum Power backoff), an Additional-Maximum Power backoff (Additional-Maximum Power backoff), a Power management Maximum Power backoff (Power management Maximum Power backoff), and Δ Tc (Allowed side band transmission Power grant) are taken into consideration, where the Power backoff parameter may be a set of parameters shared by all bands, or may also define a set of independent parameters for each band.

The maximum transmission power of the frequency band on the UE side is a newly added parameter in this embodiment, and may be configured on the network side, and the network side needs to perform corresponding improvement, see the following embodiments.

Referring to fig. 10, the flow of the method for transmitting configuration information according to the present embodiment is as follows:

step 1001: and the network side determines the maximum transmitting power of each frequency band.

Step 1002: and the network side sends the maximum transmitting power of each frequency band to the UE through high-layer signaling or PDCCH signaling.

In addition, the network side can also send the power reduction proportionality coefficient of each frequency band to the UE through high-layer signaling or PDCCH signaling.

The implementation of uplink power control is known from the above description, and the process is mainly implemented by the UE, and the network side device is improved accordingly, and then the internal structures and functions of the two devices are introduced below.

Referring to fig. 11, the UE in this embodiment includes: power determination module 1101 and control module 1102

The power determining module 1101 is configured to determine the transmit power of the uplink channel on each carrier based on the maximum transmit power of each carrier and the power control parameter corresponding to the carrier.

The control module 1102 is configured to determine, for each frequency band, whether the sum of the transmit powers of the uplink channels on the carriers in the same frequency band exceeds the maximum transmit power of the frequency band, and if not, keep the transmit power value of the uplink channel calculated on each carrier unchanged; if the sum of the transmission power of the uplink channels on the carriers in the same frequency band does not exceed the maximum transmission power of the frequency band after the power reduction operation, the sum of the transmission power of the uplink channels on the carriers in all the frequency bands after the power reduction operation does not exceed the maximum transmission power allowed by the UE.

The control module 1102 determines whether the sum of the transmit powers of the uplink channels on the carriers in all frequency bands exceeds the maximum transmit power allowed by the UE. When the maximum transmission power allowed by the UE is exceeded, the control module 1102 reduces the maximum transmission power of each frequency band based on the maximum transmission power allowed by the UE, so that the sum of the maximum transmission powers of all frequency bands after the power reduction operation does not exceed the maximum transmission power allowed by the UE, and further after the power reduction operation, the control module 1102 judges, for each frequency band, whether the sum of the transmission powers of the uplink channels on the carriers within the frequency band exceeds the maximum transmission power of the frequency band based on the maximum transmission power of the frequency band after the power reduction operation; when the maximum transmission power allowed by the UE is not exceeded, the control module 1102 determines, for each frequency band, whether the sum of the transmission powers of the uplink channels on the carriers in the frequency band exceeds the maximum transmission power of the frequency band.

Or, the control module 1102 determines whether the sum of the transmit powers of the uplink channels on the carriers in the same frequency band exceeds the maximum transmit power of the frequency band, records a first frequency band exceeding the maximum transmit power of the frequency band and a second frequency band not exceeding the maximum transmit power of the frequency band, determines whether the sum of the total transmit power of the frequency band in the second frequency band and the maximum transmit power of the frequency band in the first frequency band exceeds the maximum transmit power allowed by the UE, and performs power reduction on the uplink channel transmit power according to the determination result so that the sum of the transmit powers of the uplink channels on the carriers in the same frequency band after power reduction operation does not exceed the maximum transmit power of the frequency band, and the sum of the transmit powers of the uplink channels on the carriers in all frequency bands after power reduction operation does not exceed the maximum transmit power allowed by the UE, and the total transmitting power of each frequency band in the second type frequency band is the sum of the transmitting power of each uplink channel on the carrier wave in the frequency band.

When the maximum transmission power allowed by the UE is exceeded, the control module 1102 reduces the maximum transmission power of each frequency band based on the maximum transmission power allowed by the UE, so that the sum of the maximum transmission power of each frequency band after the power reduction operation does not exceed the maximum transmission power allowed by the UE, and further after the power reduction operation, the control module 1102 judges, for each frequency band, whether the sum of the transmission power of each uplink channel on the carrier within the frequency band exceeds the maximum transmission power of the frequency band based on the maximum transmission power of each frequency band after the power reduction operation.

When the maximum transmission power allowed by the UE is not exceeded, the control module 1102 determines, for each frequency band, whether the sum of the transmission powers of the uplink channels on the carriers in the frequency band exceeds the maximum transmission power of the frequency band.

When the maximum transmission power allowed by the UE is exceeded, the control module 1102 reduces the maximum transmission power of each frequency band in the first class of frequency bands and the total transmission power of each frequency band in the second class of frequency bands based on the maximum transmission power allowed by the UE, so that the sum of the maximum transmission power of each frequency band in the first class of frequency bands and the total transmission power of each frequency band in the second class of frequency bands after power reduction does not exceed the maximum transmission power allowed by the UE, and further after power reduction operation, the control module 1102 judges, for each frequency band, whether the sum of the transmission power of each uplink channel on the carrier in the frequency band exceeds the maximum transmission power of the frequency band based on the maximum transmission power of each frequency band after power reduction operation.

When the maximum transmission power allowed by the UE is not exceeded, the control module 1102 determines, for each frequency band, whether the sum of the transmission powers of the uplink channels on the carriers in the frequency band exceeds the maximum transmission power of the frequency band.

Specifically, the control module 1102 performs proportional reduction on the maximum transmission power of each frequency band based on the maximum transmission power allowed by the UE; or, based on the maximum transmission power allowed by the UE, reducing the maximum transmission power of each frequency band according to a power reduction scaling factor of each frequency band, where the power reduction scaling factors of each frequency band are not completely the same, and the power reduction scaling factor of each frequency band is not less than 0 and not more than 1.

The power reduction proportion coefficient of each frequency band is pre-agreed between the UE and the network side, or configured to the UE by the network side through a high-level signaling or a PDCCH signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling and a Media Access Control (MAC) signaling.

Preferably, the control module 1102 preferentially reduces the transmit power of the uplink channel with the lowest priority on the carrier in the frequency band based on the maximum transmit power of the frequency band; and reducing the transmission power of a plurality of uplink channels with the same priority on the carriers in the same frequency band according to the same proportion so as to ensure that the sum of the transmission powers of the uplink channels on the carriers in the same frequency band after power reduction does not exceed the maximum transmission power of the frequency band.

The priority of each uplink channel on the carrier in the same frequency band is that the priority of a PUCCH is greater than the priority of a PRACH is greater than the priority of a PUSCH carrying UCI is greater than the priority of a PUSCH not carrying UCI, or the priority of the PRACH is greater than the priority of the PUCCH is greater than the priority of the PUSCH carrying UCI is greater than the priority of the PUSCH not carrying UCI.

The maximum transmitting power of each frequency band is pre-agreed between the UE and the network side, or the maximum transmitting power is configured to the UE by the network side through a high-level signaling or a PDCCH signaling, wherein the high-level signaling comprises a Radio Resource Control (RRC) signaling and a Media Access Control (MAC) signaling.

Referring to fig. 12, the network-side device in this embodiment includes: a control module 1201 and an interface module 1202.

The control module 1201 is configured to determine a maximum transmit power for each frequency band.

The interface module 1202 is configured to send the maximum transmission power of each frequency band to the UE through higher layer signaling or PDCCH signaling. The interface module 1202 is further configured to send the power reduction scaling factor of each frequency band to the UE through a higher layer signaling or a PDCCH signaling.

In the embodiment of the invention, the maximum transmitting power allowed by each band (frequency band) is configured for the UE in advance, the UE judges whether the transmitting power of each uplink channel on the carrier in the same frequency band needs to be adjusted or not according to the maximum transmitting power of the frequency band, if so, corresponding operation is carried out so as to ensure that the sum of the transmitting power of the uplink channel on the carrier in the same frequency band after power reduction operation does not exceed the maximum transmitting power of the frequency band, and the sum of the transmitting power of the uplink channel on the carrier in all frequency bands after power reduction operation does not exceed the maximum transmitting power allowed by the UE. Power control for the frequency band is achieved. The maximum transmission power of each frequency band configured in the UE is configured to the UE by a base station higher layer signaling (such as an RRC (radio resource control) signaling or a MAC (media access control) signaling) or a PDCCH signaling; or pre-agreed between the UE and the base station, for example, the maximum transmit power of each frequency band is predetermined to average the maximum transmit power allowed by the UE, no additional signaling is required. In the embodiment of the invention, the maximum transmitting power allowed by the frequency band can be configured by the network side, so that the maximum transmitting power allowed by each frequency band can be flexibly configured; or, the maximum transmission power allowed by the frequency band may be agreed by the UE and the network side, so that the network side is not required to send the configuration signaling, thereby saving signaling resources. In addition, the maximum transmission power allowed by the frequency band may be configured based on the maximum transmission power allowed by the UE, that is, the sum of the maximum transmission power allowed by each frequency band does not exceed the maximum transmission power allowed by the UE, so that the UE only determines that the sum of the transmission power of the uplink channel on the carriers in the same frequency band does not exceed the maximum transmission power of the frequency band. Or, the maximum transmit power allowed for each frequency band is configured independently, and the UE needs to determine whether the sum of the maximum transmit powers allowed for each frequency band exceeds the maximum transmit power allowed for the UE. When the maximum transmission power allowed by the frequency band and the uplink channel power of the carrier are reduced, the maximum transmission power and the uplink channel power can be reduced proportionally or non-proportionally according to the weight coefficient value. And the power reduction operation of different degrees can be carried out on each uplink channel according to the priority of the uplink channel. The embodiment of the invention provides multiple implementation modes and is suitable for multiple application scenes.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (24)

1. A method for uplink power control, comprising the steps of:

the method comprises the steps that User Equipment (UE) determines the transmitting power of an uplink channel on each carrier based on the maximum transmitting power of each carrier and a power control parameter corresponding to the carrier;

for each frequency band, the UE judges whether the sum of the transmitting power of each uplink channel on the carrier in the same frequency band exceeds the maximum transmitting power of the frequency band;

if not, the UE keeps the transmission power value of the uplink channel calculated on each carrier unchanged;

if the sum of the transmission power of the uplink channels on the carriers in the same frequency band does not exceed the maximum transmission power of the frequency band after the power reduction operation, the UE reduces the power of the uplink channel transmission power on the carriers in the frequency band based on the maximum transmission power of the frequency band so as to ensure that the sum of the transmission power of the uplink channels on the carriers in all the frequency bands does not exceed the maximum transmission power allowed by the UE after the power reduction operation.

2. The method of claim 1, wherein the UE determines whether the sum of the transmit powers of the uplink channels on the carriers in the same frequency band exceeds the maximum transmit power of the frequency band, and specifically includes the steps of:

the UE judges whether the sum of the transmitting power of the uplink channels on the carriers in all the frequency bands exceeds the maximum transmitting power allowed by the UE;

when the maximum transmission power allowed by the UE is exceeded, the UE reduces the maximum transmission power of each frequency band based on the maximum transmission power allowed by the UE so as to ensure that the sum of the maximum transmission power of all frequency bands after the power reduction operation does not exceed the maximum transmission power allowed by the UE, and further after the power reduction operation, the UE judges whether the sum of the transmission power of each uplink channel on the carrier wave in each frequency band exceeds the maximum transmission power of the frequency band based on the maximum transmission power of the frequency band after the power reduction operation for each frequency band;

and when the maximum transmission power allowed by the UE is not exceeded, the UE judges whether the sum of the transmission power of each uplink channel on the carrier in each frequency band exceeds the maximum transmission power of the frequency band or not for each frequency band.

3. The method of claim 1, wherein the UE determining whether the sum of the transmit powers of the uplink channels on the carriers in the same frequency band exceeds the maximum transmit power of the frequency band comprises:

the UE judges whether the sum of the transmitting power of the uplink channels on the carriers in the same frequency band exceeds the maximum transmitting power of the frequency band, records a first frequency band exceeding the maximum transmitting power of the frequency band and a second frequency band not exceeding the maximum transmitting power of the frequency band, judges whether the sum of the total transmitting power of the frequency bands in the second frequency band and the maximum transmitting power of the frequency bands in the first frequency band exceeds the maximum transmitting power allowed by the UE, and reduces the transmitting power of the uplink channels according to the judgment result so as to ensure that the sum of the transmitting power of the uplink channels on the carriers in the same frequency band after the power reduction operation does not exceed the maximum transmitting power allowed by the UE and the sum of the transmitting power of the uplink channels on the carriers in all the frequency bands after the power reduction operation does not exceed the maximum transmitting power allowed by the UE, wherein, and the total transmitting power of each frequency band in the second type frequency band is the sum of the transmitting power of each uplink channel on the carrier wave in the frequency band.

4. The method of claim 3, wherein the UE performs power reduction on the uplink channel transmission power according to the determination result, and specifically includes:

when the maximum transmission power allowed by the UE is exceeded, the UE reduces the maximum transmission power of each frequency band based on the maximum transmission power allowed by the UE so as to ensure that the sum of the maximum transmission power of each frequency band after the power reduction operation does not exceed the maximum transmission power allowed by the UE, and further after the power reduction operation, the UE judges whether the sum of the transmission power of each uplink channel on the carrier wave in each frequency band exceeds the maximum transmission power of the frequency band based on the maximum transmission power of the frequency band after the power reduction operation for each frequency band;

and when the maximum transmission power allowed by the UE is not exceeded, the UE judges whether the sum of the transmission power of each uplink channel on the carrier in each frequency band exceeds the maximum transmission power of the frequency band or not for each frequency band.

5. The method of claim 3, wherein the UE performs power reduction on the uplink channel transmission power according to the determination result, and specifically includes:

when the maximum transmission power allowed by the UE is exceeded, the UE reduces the maximum transmission power of each frequency band in the first class frequency band and the total transmission power of each frequency band in the second class frequency band based on the maximum transmission power allowed by the UE so as to ensure that the sum of the maximum transmission power of each frequency band in the first class frequency band and the total transmission power of each frequency band in the second class frequency band after power reduction does not exceed the maximum transmission power allowed by the UE, and further after power reduction operation, the UE judges whether the sum of the transmission power of each uplink channel on a carrier in each frequency band exceeds the maximum transmission power of the frequency band based on the maximum transmission power of the frequency band after power reduction operation for each frequency band;

and when the maximum transmission power allowed by the UE is not exceeded, the UE judges whether the sum of the transmission power of each uplink channel on the carrier in each frequency band exceeds the maximum transmission power of the frequency band or not for each frequency band.

6. The method of any of claims 2-5, wherein the step of the UE reducing the maximum transmit power for each frequency band based on the maximum transmit power allowed by the UE comprises:

the UE reduces the maximum transmitting power of each frequency band in equal proportion based on the maximum transmitting power allowed by the UE; or

And the UE reduces the maximum transmitting power of each frequency band according to the maximum transmitting power allowed by the UE, wherein the power reduction proportionality coefficients of the frequency bands are not completely the same, and the power reduction proportionality coefficient of each frequency band is not less than 0 and not more than 1.

7. The method of claim 6, wherein the power reduction scaling factor of each frequency band is pre-agreed for the UE and the network side, or configured for the UE by the network side through a higher layer signaling or a PDCCH signaling, wherein the higher layer signaling comprises a Radio Resource Control (RRC) signaling and a Medium Access Control (MAC) signaling.

8. The method of any of claims 1-5, wherein the step of the UE power reducing the uplink channel transmit power on carriers within a frequency band based on the maximum transmit power of the frequency band comprises:

the UE preferentially reduces the transmitting power of the uplink channel with the lowest priority on the carrier wave in the frequency band based on the maximum transmitting power of the frequency band;

and the UE reduces the transmitting power of a plurality of uplink channels with the same priority on the carriers in the same frequency band according to the same proportion so as to ensure that the sum of the transmitting powers of the uplink channels on the carriers in the same frequency band after power reduction does not exceed the maximum transmitting power of the frequency band.

9. The method of claim 2, wherein the priority of each uplink channel on the carrier within the same frequency band is greater than the priority of the PUCCH > the priority of the PRACH > the priority of the PUSCH carrying the UCI > the priority of the PUSCH not carrying the UCI, or wherein the priority of the PRACH > the priority of the PUCCH > the priority of the PUSCH carrying the UCI > the priority of the PUSCH not carrying the UCI.

10. The method according to any of claims 1-8, wherein the maximum transmission power of each frequency band is pre-agreed for the UE and the network side, or is configured to the UE by the network side through a higher layer signaling or PDCCH signaling, wherein the higher layer signaling includes radio resource control, RRC, signaling and medium access control, MAC, signaling.

11. A method of transmitting configuration information, comprising the steps of:

and the network side sends the maximum transmitting power of each frequency band to the UE through high-layer signaling or PDCCH signaling.

12. The method of claim 11, further comprising:

and the network side sends the power reduction proportionality coefficient of each frequency band to the UE through a high-layer signaling or a PDCCH signaling.

13. A User Equipment (UE), comprising:

a power determining module, configured to determine the transmit power of the uplink channel on each carrier based on the maximum transmit power of each carrier and a power control parameter corresponding to the carrier;

the control module is used for judging whether the sum of the transmitting power of each uplink channel on the carrier in the same frequency band exceeds the maximum transmitting power of the frequency band or not aiming at each frequency band, and if not, the transmitting power value of the uplink channel calculated on each carrier is kept unchanged; if the sum of the transmission power of the uplink channels on the carriers in the same frequency band does not exceed the maximum transmission power of the frequency band after the power reduction operation, the sum of the transmission power of the uplink channels on the carriers in all the frequency bands after the power reduction operation does not exceed the maximum transmission power allowed by the UE.

14. The UE of claim 13, wherein the control module determines whether a sum of transmit powers of uplink channels on carriers within all frequency bands exceeds a maximum transmit power allowed by the UE;

when the maximum transmission power allowed by the UE is exceeded, the control module reduces the maximum transmission power of each frequency band based on the maximum transmission power allowed by the UE so as to meet the condition that the sum of the maximum transmission power of all frequency bands after the power reduction operation does not exceed the maximum transmission power allowed by the UE, and further after the power reduction operation, the control module judges whether the sum of the transmission power of each uplink channel on the carrier in each frequency band exceeds the maximum transmission power of the frequency band based on the maximum transmission power of the frequency band after the power reduction operation for each frequency band;

when the maximum transmission power allowed by the UE is not exceeded, the control module judges whether the sum of the transmission power of each uplink channel on the carrier in each frequency band exceeds the maximum transmission power of the frequency band or not for each frequency band.

15. The UE of claim 14, wherein the control module determines whether the sum of the transmission powers of the uplink channels on the carriers in the same frequency band exceeds the maximum transmission power of the frequency band, records a first class of frequency bands that exceed the maximum transmission power of the frequency band and a second class of frequency bands that do not exceed the maximum transmission power of the frequency band, determines whether the sum of the total transmission power of the frequency bands in the second class of frequency bands and the maximum transmission power of the frequency bands in the first class of frequency bands exceeds the maximum transmission power allowed by the UE, and performs power reduction on the uplink channel transmission power according to the determination result so that the sum of the transmission powers of the uplink channels on the carriers in the same frequency band after power reduction operation does not exceed the maximum transmission power of the frequency band, and the sum of the transmission powers of the uplink channels on the carriers in all frequency bands after power reduction operation does not exceed the maximum transmission power allowed by the UE, and the total transmitting power of each frequency band in the second type frequency band is the sum of the transmitting power of each uplink channel on the carrier wave in the frequency band.

16. The UE of claim 15, wherein the control module decreases the maximum transmit power of each frequency band based on the maximum transmit power allowed by the UE when the maximum transmit power allowed by the UE is exceeded, such that the sum of the maximum transmit power of each frequency band after the power reduction operation does not exceed the maximum transmit power allowed by the UE, and further after the power reduction operation, the control module determines, for each frequency band, whether the sum of the transmit powers of the uplink channels on the carriers within the frequency band exceeds the maximum transmit power of the frequency band based on the maximum transmit power of each frequency band after the power reduction operation;

when the maximum transmission power allowed by the UE is not exceeded, the control module judges whether the sum of the transmission power of each uplink channel on the carrier in each frequency band exceeds the maximum transmission power of the frequency band or not for each frequency band.

17. The UE of claim 15, wherein when the maximum transmit power allowed by the UE is exceeded, the control module decreases the maximum transmit power of each frequency band in the first class of frequency bands and the total transmit power of each frequency band in the second class of frequency bands based on the maximum transmit power allowed by the UE, so that the sum of the maximum transmit power of each frequency band in the first class of frequency bands and the total transmit power of each frequency band in the second class of frequency bands after power reduction does not exceed the maximum transmit power allowed by the UE, and further after the power reduction operation, the control module determines, for each frequency band, whether the sum of the transmit powers of the uplink channels on the carriers within the frequency band exceeds the maximum transmit power of the frequency band based on the maximum transmit power of each frequency band after the power reduction operation;

when the maximum transmission power allowed by the UE is not exceeded, the control module judges whether the sum of the transmission power of each uplink channel on the carrier in each frequency band exceeds the maximum transmission power of the frequency band or not for each frequency band.

18. The UE of any of claims 14-17, wherein the control module is to scale down the maximum transmit power for each frequency band based on the maximum transmit power allowed for the UE; or, based on the maximum transmission power allowed by the UE, reducing the maximum transmission power of each frequency band according to a power reduction scaling factor of each frequency band, where the power reduction scaling factors of each frequency band are not completely the same, and the power reduction scaling factor of each frequency band is not less than 0 and not more than 1.

19. The UE of claim 18, wherein the power reduction scaling factor of each frequency band is pre-agreed for the UE and a network side, or configured for the UE by a network side through a higher layer signaling or a PDCCH signaling, wherein the higher layer signaling includes a radio resource control RRC signaling and a medium access control MAC signaling.

20. The UE of any of claims 13-17, wherein the control module is to preferentially reduce the transmit power of a lowest priority uplink channel on a carrier within a frequency band based on a maximum transmit power of the frequency band; and reducing the transmission power of a plurality of uplink channels with the same priority on the carriers in the same frequency band according to the same proportion so as to ensure that the sum of the transmission powers of the uplink channels on the carriers in the same frequency band after power reduction does not exceed the maximum transmission power of the frequency band.

21. The UE of claim 14, wherein the priority of each uplink channel on a carrier within the same frequency band is > priority of PUCCH > priority of PRACH > priority of PUSCH carrying UCI > priority of PUSCH not carrying UCI, or wherein priority of PRACH > priority of PUCCH > priority of PUSCH carrying UCI > priority of PUSCH not carrying UCI.

22. The UE according to any of claims 13-20, wherein the maximum transmit power of each frequency band is pre-agreed by the UE and the network side, or is configured to the UE by the network side through a higher layer signaling or a PDCCH signaling, wherein the higher layer signaling includes a radio resource control, RRC, signaling and a medium access control, MAC, signaling.

23. A network-side device, comprising:

the control module is used for determining the maximum transmitting power of each frequency band;

and the interface module is used for sending the maximum transmitting power of each frequency band to the UE through high-level signaling or PDCCH signaling.

24. The network-side device of claim 23, wherein the interface module is further configured to send the power reduction scaling factor for each frequency band to the UE through higher layer signaling or PDCCH signaling.

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