CN102238716A

CN102238716A - Method and device for adjusting transmitting power

Info

Publication number: CN102238716A
Application number: CN2011101985007A
Authority: CN
Inventors: 潘学明; 高雪娟; 林亚男; 肖国军
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT
Priority date: 2011-07-15
Filing date: 2011-07-15
Publication date: 2011-11-09
Also published as: WO2013010441A1

Abstract

The invention discloses a method and device for adjusting transmitting power, belonging to the field of communication. The method and the device are used for realizing the reasonable distribution of transmitting power between uplink component carriers (ULCC). The method comprises the following steps: when UE (User Equipment) transmits at least one preamble and at least one of other uplink signals at different ULCCs simultaneously and the total target transmitting power is greater than the maximum allowable transmitting power, the UE requires to determine the power adjustment priority of each uplink signal according to a preset rule and adjusts the target transmitting power of at least one preamble and/or at least one of other uplink signals according to the power adjustment priority until the total target transmitting power is not greater than the maximum allowable transmitting power. Thus, the UE can realize the reasonable distribution of transmitting power among different ULCCs, the situation that the transmission of uplink signals is influenced due to too large total target transmitting power is avoided, the operating stability and the robustness of the system are enhanced, and the overall performance of the system is also enhanced.

Description

Method and device for adjusting transmitting power

Technical Field

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

Background

In an LTE system, a Random access procedure (Random access procedure) is generally used to establish uplink synchronization between a UE and a base station.

In the LTE Rel-8 system, the UE uses a PRACH channel (physical random access channel) to transmit a preamble (preamble sequence) in an uplink subframe to implement random access.

In an LTE Rel-10 system, a carrier aggregation technology is introduced, that is, multiple component carriers are aggregated and used in the downlink and/or uplink directions to provide a higher peak rate, in a carrier aggregation scenario of the LTE Rel-10 system, each UE is allocated by a base station one Pcell (Primary cell) and several scells (Secondary cells), for an FDD system, one cell includes one downlink carrier and one uplink carrier, and for a TDD system, one carrier becomes one cell. In the existing LTE Rel-10 related standard, it is specified that the random access of the UE can only occur on the Pcell, i.e. the UE can only use the PRACH channel to transmit the preamble through the carrier included in the Pcell to realize the random access, and does not support the preamble to be transmitted simultaneously with other uplink channels [ e.g. PUCCH (physical uplink control channel), PUSCH (physical uplink shared channel), etc. ] in the same subframe. For example, the existing LTE-related standards do not support the transmission scheme shown in table 1.

TABLE 1

Combined mode for preamble and other uplink channel simultaneous transmission

Compared with the LTE Rel-10 system, the LTE Rel-11 system needs to support a more complex carrier aggregation scenario, which includes: 1) carrier aggregation of different uplink frequency bands; 2) a Macro base station (Macro) and a Remote Radio Head (RRH) mixed carrier aggregation deployment scheme. The carrier aggregation deployment scheme with the mixed macro base station and the RRH can be implemented according to the following modes:

for example, frequency F1 is used by macro base stations, providing macro coverage, and frequency F2 is used by RRHs, providing higher throughput in hot spot areas. The UE moving at high speed operates at F1 to maintain service continuity. F1 and F2 are in different frequency bands, for example, F1 is located on 800MHz or 2GHz band, and F2 is located on 3.5GHz band, then in the geographical area covered by RRH using F2, the component carrier using F2 and the component carrier using F1 may be subjected to carrier aggregation.

For another example, the frequencies F1 and F2 are used by the macro base station, and due to the frequency band, F2 has a smaller coverage area than F1, and therefore, an RRH is deployed at the cell edge of F2 for coverage extension, and then, in an area where the coverage areas of F1 and F2 overlap, carrier aggregation may be performed on the component carrier using F1 and the component carrier using F2.

In the above carrier aggregation scenario, because the propagation characteristics of wireless signals in different frequency bands are different, if the UE simultaneously transmits signals to the base station on two component carriers with longer frequency bands, the time of arrival of the two signals at the base station will be different. For example, assuming that the UE is in a geographic area covered by both the macro base station and the RRH, and carrier aggregation is performed on F1 and F2, since F1 is used by the macro base station and F2 is used by the RRH, signals on two frequencies, F1 and F2, may travel different propagation paths, and thus, the time of arrival at the base station of the signals simultaneously transmitted by the UE on F1 and F2 will be different.

In order to solve the above problems, in the current standardization discussion, uplink synchronization between the UE of the Scell and the base station tends to be established in a manner of "initiating random access on the Scell", and after the Scell performs random access, the base station can detect a signal arrival time difference between the Pcell and the Scell, thereby correctly controlling uplink timing of each cell; thus, preamble transmission may exist in both Pcell and Scell (i.e., on different aggregated UL CCs), and a PRACH carrying the preamble may be sent simultaneously with other uplink channels on different UL CCs, which may greatly increase the total target transmission power of the UE (i.e., the sum of the target transmission powers on the UL CCs).

In this case, once the total target transmit power of the UE exceeds the maximum allowed transmit power of the UE, a reasonable allocation of transmit power among UL CCs cannot be achieved according to the existing LTE-related standards.

Disclosure of Invention

The embodiment of the invention provides a method and a device for adjusting transmission power, which are used for realizing reasonable distribution of the transmission power among all uplink member carriers in a carrier aggregation scene.

The embodiment of the invention provides the following specific technical scheme:

a method for adjusting transmission power is applied to a carrier aggregation scene and comprises the following steps:

respectively determining target transmitting power of at least one preamble and at least one other uplink signal which are simultaneously sent on different wave UL CCs, and calculating total target transmitting power;

comparing the total target transmit power to a maximum allowed transmit power;

and when the total target transmitting power is determined to be larger than the maximum allowed transmitting power according to the comparison result, respectively determining the power adjustment priority of the at least one preamble and the at least one other uplink signal, and reducing the target transmitting power of the at least one preamble or/and the at least one other uplink signal according to the power adjustment priority until the total target transmitting power is not larger than the maximum allowed transmitting power.

An apparatus for adjusting transmit power in a carrier aggregation scenario, comprising:

a calculating unit, configured to determine target transmit powers of at least one preamble and at least one other uplink signal sent simultaneously on different UL CCs, respectively, and calculate a total target transmit power;

a comparing unit, configured to compare the total target transmission power with a maximum allowed transmission power;

and the adjusting unit is used for respectively determining the power adjustment priority of the at least one preamble and the at least one other uplink signal when the total target transmitting power is determined to be greater than the maximum allowed transmitting power according to the comparison result, and adjusting the target transmitting power of the at least one preamble or/and the at least one other uplink signal downwards according to the determined power adjustment priority until the total target transmitting power is not greater than the maximum allowed transmitting power.

In the embodiment of the invention, when the UE simultaneously sends at least one preamble and at least one other uplink signal on different UL CCs, and when the total target transmitting power is greater than the maximum allowed transmitting power, the UE needs to determine the power adjustment priority of each uplink signal according to a preset rule, and the target transmitting power of at least one preamble or/and at least one other uplink signal is adjusted according to the power adjustment priority until the total target transmitting power is not greater than the maximum allowable transmitting power, so that, in a carrier aggregation scenario, when preamble and other uplink signals are transmitted simultaneously in different UL CCs, UE can realize reasonable distribution of transmitting power among different ULCCs, avoid the condition that the transmitting power of the total target is overlarge to influence the sending of uplink signals, therefore, the operation stability and robustness of the system are improved, and the overall performance of the system is also improved.

Drawings

FIG. 1 is a diagram illustrating a communication system architecture and a UE functional structure according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a UE performing power allocation among UL CCs according to an embodiment of the present invention.

Detailed Description

In the embodiment of the invention, under a carrier aggregation scene of an LTE Rel-11 system, UE is allowed to simultaneously send at least one preamble and at least one other uplink signal on different UL CCs, wherein the at least one other uplink signal can be any one or any combination of the preamble, a PUCCH signal and a PUSCH signal; when other uplink signals are also preamble, the UE actually initiates a random access procedure to the base station through the UL CCs corresponding to the multiple cells, respectively, so as to implement uplink synchronization between each cell and the base station; and when the other uplink signals are PUCCH signals and/or PUSCH signals, the UE actually performs the following operations through the UL CCs corresponding to the multiple cells, respectively, at the same time: initiating a random access process, and sending uplink control signaling and/or uplink data.

When the UE simultaneously sends at least one preamble and at least one other uplink signal on different UL CCs, the total target transmitting power of the UE is the linear sum of the target transmitting power of the UE on each UL CC, the UE compares the total target transmitting power with the maximum allowed transmitting power of the UE after obtaining the calculated total target transmitting power through calculation, when the total target transmitting power is determined to be larger than the maximum allowed transmitting power according to the comparison result, the UE respectively determines the power adjustment priority of the at least one preamble and the at least one other uplink signal, and adjusts the target transmitting power of the at least one preamble or/and the at least one other uplink signal downwards according to the power adjustment priority until the total target transmitting power is not larger than the maximum allowed transmitting power.

In this embodiment, when determining the target transmit power of the Preamble, the UE adopts the following formula 1:

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

equation 1

Wherein,

P_PRACHtarget transmitting power adopted when the UE transmits the Preamble in the uplink subframe i of the member carrier c;

P_CMAX，c(i) the maximum allowed transmitting power of the UE on the member carrier c is configured in advance by a high layer;

PL_cmeasuring downlink path loss in a cell corresponding to the member carrier c according to the downlink signal by the UE;

PREAMBLE _ RECEIVED _ TARGET _ POWER is PREAMBLE RECEIVED TARGET POWER and is calculated by the MAC layer of the UE.

In this embodiment, when determining the target transmission power of the PUCCH signal, the UE adopts the following formula 2:

<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>Δ</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>Δ</mi> <mi>TxD</mi> </msub> <mrow> <mo>(</mo> <msup> <mi>F</mi> <mo>′</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> <mi>dBm</mi> <mo>]</mo> </mrow> </math>

equation 2

Wherein,

P_PUCCH(i) target transmitting power adopted when the UE transmits PUCCH signals in an uplink subframe i of a member carrier c;

parameter Δ_{F_PUCCH}(F) Configuring by a high layer, and corresponding to the power offset of different PUCCH formats relative to PUCCHformat 1a, and containing a plurality of formats of PUCCH formats 1/1a/1b/2/2a/2b in Rel-8;

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_HARQNumber of ACK/NACK bits corresponding to a bearer;

P_{O_PUCCH}for the target received power, by the cell-specific part P_{O_NOMINAL_PUCCH}And UE-specific part P_{O_UE_PUCCH}The two parts are added together;

Δ_TxD(F') is the amount of power adjustment used in PUCCH transmit diversity

g (i) is the cumulative amount of power control command words.

In this embodiment, when determining the target transmission power of the PUSCH signal, the UE adopts the following formula 3

<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> <msub> <mrow> <mn>10</mn> <mi>log</mi> </mrow> <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>α</mi> <mi>c</mi> </msub> <mrow> <mo>(</mo> <mi>j</mi> <mo>)</mo> </mrow> <mo>·</mo> <msub> <mi>PL</mi> <mi>c</mi> </msub> <mo>+</mo> <msub> <mi>Δ</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> <mi>dBm</mi> <mo>]</mo> </mrow> </math>

Equation 3

Wherein,

P_PUSCH，c(i) target transmitting power adopted when the UE transmits the PUSCH signal in the uplink subframe i of the member carrier c;

M_PUSCH(i) resource size allocated for PUSCH signal for validation in ith uplink subframe, expressed as number of Resource Blocks (RBs)

P_{O_PUSCH，c}(j) For the target received power of the PUSCH signal, it is normalized by a cell-specific normalization portion P of 8 bits_{O_NOMINAL_PUSCH，c}(j) And 4bit UE specific part P_{O_UE_PUSCH，c}(j) The sum of the components;

α_cfor the path loss compensation factor, indicating that PL is the downlink path loss measured by UE through 3 bits by a high-level signaling;

K_Sa deltaMCS-Enabled parameter dedicated to the UE (i.e. whether the power adjustment function is started according to the MCS) is indicated by a higher layer signaling;

f (i) is the current PUSCH power control adjustment state.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, in the embodiment of the present invention, a UE in a communication system includes a calculating unit 10, a comparing unit 11 and an adjusting unit 12, wherein,

a calculating unit 10, configured to determine target transmit powers of at least one preamble and at least one other uplink signal sent simultaneously on different UL CCs, respectively, and calculate a total target transmit power;

a comparing unit 11, configured to compare the total target transmission power with a maximum allowed transmission power;

and an adjusting unit 12, configured to determine power adjustment priorities of at least one preamble and at least one other uplink signal respectively when it is determined that the total target transmission power is greater than the maximum allowed transmission power according to the comparison result, and down-adjust the target transmission power of the at least one preamble or/and the at least one other uplink signal according to the determined power adjustment priorities until the total target transmission power is not greater than the maximum allowed transmission power.

Based on the above technical solution, referring to fig. 2, in the embodiment of the present invention, in a carrier aggregation scenario, when the UE simultaneously sends at least one preamble and at least one other uplink signal on different UL CCs, respectively, a detailed flow of the UE adjusting the transmission power is as follows:

step 200: and respectively determining target transmitting power of at least one preamble and at least one other uplink signal which are simultaneously transmitted on different UL CCs, and calculating the total target transmitting power.

When determining the target transmit power of any UL CC, the corresponding target transmit power may be determined according to the type of the uplink signal sent by the UL CC and according to the foregoing formula 1, formula 2, or formula 3, which is not described herein again;

after obtaining the target transmitting power of each UL CC, calculating the linear sum of the target transmitting power of each UL CC, wherein the linear sum is the total target transmitting power of the UE; for example, the above linear sum is described asRepresenting the total target transmission power of the UE in the uplink subframe i of the component carrier c.

Step 210: and comparing the calculated total target transmitting power with the preset maximum allowable transmitting power.

That is to say, the

And P_CMAX，c(i) Make a comparison if

The UE needs to make a target transmit power adjustment,the UE does not need to adjust the target transmission power, and directly transmits the corresponding uplink signal according to the determined target transmission power.

Step 220: and when the total target transmitting power is determined to be larger than the maximum allowed transmitting power according to the comparison result, respectively determining the power adjustment priority of the at least one preamble and the at least one other uplink signal, and reducing the target transmitting power of the at least one preamble or/and the at least one other uplink signal according to the power adjustment priority until the total target transmitting power is not larger than the maximum allowed transmitting power.

When step 220 is executed, the UE needs to determine the power adjustment priority of at least one preamble and at least one other uplink signal according to the preset rule and the signal type, and down-regulates the target transmit power of at least one preamble or/and at least one other uplink signal corresponding to the specified power adjustment priority until the total target transmit power is not greater than the maximum allowed transmit power.

In this embodiment, for different types of uplink signals, different power adjustment priorities are respectively set in different carrier aggregation scenarios, so that the UE needs to determine the power adjustment priority of each uplink signal according to an actual application environment, for example, when multiple preambles are simultaneously transmitted, the power adjustment priority of each preamble is respectively determined, and for example, when a preamble is simultaneously transmitted with a PUCCH signal or/and a PUSCH signal, the power adjustment priority of a preamble, a PUCCH signal or/and a PUSCH signal is respectively determined; in this embodiment, after determining the power adjustment priority of each uplink signal, the target transmit power of the uplink signal with the highest power adjustment priority is first adjusted, and of course, the target transmit power with the next highest or lowest power adjustment priority may also be adjusted.

The following introduces specific adjustment modes of the target transmit power for different carrier aggregation scenarios in practical applications as follows:

in the first case, at least one other uplink signal sent simultaneously with the at least one preamble is also a preamble, that is, the UE initiates a random access procedure in multiple cells simultaneously, so as to implement uplink synchronization with the base station. The most common application scenarios include: for example, the UE simultaneously sends preambles through the ULCCs in the Pcell and the Scell, respectively; for another example, the UE simultaneously transmits preambles through UL CCs in multiple scells, respectively. In this case, the UE may adopt any one of the following four manners a1, b1, c1 and d1 when adjusting the target transmission power for each Preamble (for example only, and not limited thereto):

a1, UE determines that the power adjustment priority of each preamble is the same, and adjusts the target transmitting power of each preamble proportionally until the total target transmitting power is not larger than the maximum allowable transmitting power.

The term "proportionally decreasing" means that the linear values of the target transmit powers of the UL CCs are decreased by the same ratio, which is also the same in the following embodiments and will not be described again.

b1, the UE determines the power adjustment priority from high to low as: preamble within Scell- > preamble within Pcell.

That is, the UE determines that the power adjustment priority of the preamble sent on the UL CC in the Scell is the highest, and adjusts the target transmission power of the preamble downward (preferably, the adjustment method also adopts an equal-proportion downward adjustment, which will not be described further below), and maintains the target transmission power of the preamble sent on the UL CC in the Pcell unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

c1, if the UE confirms that the preamble is not sent on the UL CC in the Pcell, the UE determines that the power adjustment priority is in the following sequence: preamble- > in the specified Scell is not the preamble in the specified Scell; there are various setting methods for specifying the Scell, for example, the setting method may be a cell with a lowest CellIndex (cell number), or a cell with a lowest frequency point.

Namely, the UE determines that the power adjustment priority of the preamble sent on the UL CC in the designated Scell is the highest, and adjusts the target transmission power of the preamble downward, and maintains the target transmission power of the preamble sent on the UL CC in the non-designated Scell unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

d1, the UE determines the power adjustment priority to be in the order from high to low: contention type preamble- > non-contention type preamble.

Namely, the UE determines that the power adjustment priority of the contention type preamble is the highest, and adjusts the target transmit power of the preamble downward, and maintains the target transmit power of the non-contention type preamble unchanged until the total target transmit power is not greater than the maximum allowed transmit power.

In the second case, the at least one other uplink signal sent simultaneously with the at least one preamble is at least one PUSCH signal, that is, the UE sends the preamble and the uplink data simultaneously on different UL CCs. The most common application scenarios include: for example, the UE sends a preamble on the UL CC in the Pcell, and simultaneously sends a PUSCH signal on one or respectively multiple UL CCs in the Scell; for another example, the UE sends a PUSCH signal on a UL CC in the Pcell, and simultaneously sends a preamble on one or each UL CC in the scells; for another example, the UE simultaneously transmits preamble and PUSCH signal(s) on UL CCs in different scells, respectively. In this case, the UE may adopt any one of the following four ways a2, b2, c2 and d2 when adjusting the target transmission power for preamble and PUSCH signals (for example only, and not limited thereto):

a2, the UE determines the power adjustment priority from high to low as: PUSCH signal- > preamble.

That is, the UE directly determines the power adjustment priority of at least one PUSCH signal to be the highest without determining what information is carried in the PUSCH signal, and performs down-regulation on the target transmission power of the at least one PUSCH signal, and maintains the target transmission power of the at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power. In the a2 mode, all PUSCH signals are processed in the same manner.

b2, if one or more (usually one) PUSCH signals transmitted by the UE all carry UCI (uplink control information), the UE determines that the power adjustment priorities are in order from high to low: preamble- > carries the PUSCH signal of UCI; if one or more (usually, one) PUSCH signals transmitted by the UE do not carry UCI, the UE determines that the power adjustment priorities are in order from high to low: PUSCH signal- > preamble without UCI.

That is, the UE needs to determine whether at least one PUSCH signal carries UCI, and if so, determines that the power adjustment priority of at least one preamble is highest, and down-regulates the target transmission power of the at least one preamble signal, and maintains the target transmission power of the at least one PUSCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power; otherwise, determining that the power adjustment priority of at least one PUSCH signal is highest, adjusting the target transmission power of the at least one PUSCH signal downwards, and maintaining the target transmission power of at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

c2, if one or more (usually one) PUSCH signals transmitted by the UE all carry UCI containing ACK/NACK information, the UE determines that the order of the power adjustment priorities from high to low is: preamble- > carries a PUSCH signal of UCI including ACK/NACK information; if none of one or more (usually one) PUSCH signals transmitted by the UE carries UCI including ACK/NACK information, the UE determines that the power adjustment priorities are in order from high to low: not carrying the PUSCH signal- > preamble of UCI containing ACK/NACK information; there are various cases where the PUSCH signal carries UCI including ACK/NACK information, for example, the PUSCH signal carries UCI including only ACK/NACK information, or carries UCI including ACK/NACK information and CSI (channel state information), and so on, and similarly, there are various cases where the PUSCH signal does not carry UCI including ACK/NACK information, for example, the PUSCH signal carries UCI including only CSI, or carries UCI including CSI and other information, and so on.

That is, the UE needs to determine whether the sent at least one PUSCH signal carries UCI, and further determines whether the UCI carried by the PUSCH signal includes ACK/NACK information, if so, determines that the power adjustment priority of the at least one preamble is highest, and down-regulates the target transmission power of the at least one preamble signal, and maintains the target transmission power of the at least one PUSCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power; otherwise, determining that the power adjustment priority of at least one PUSCH signal is highest, adjusting the target transmission power of the at least one PUSCH signal downwards, and maintaining the target transmission power of at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

d2, if one PUSCH signal in the plurality of PUSCH signals transmitted by the UE carries UCI, and other PUSCH signals do not carry UCI, the UE determines that the power adjustment priority is in the order from high to low as:

PUSCH signal not carrying UCI- > PUSCH signal carrying UCI- > preamble

Or

And carrying PUSCH signal-preamble-carrying UCI.

Namely, the UE determines that the power adjustment priority of at least one PUSCH signal not carrying UCI is highest, and down-regulates the target transmission power of the at least one PUSCH signal, and maintains the target transmission power of the at least one PUSCH signal carrying UCI and the at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

If the target transmission power of at least one PUSCH signal is reduced to a minimum threshold value, and after the target transmission power of one PUSCH signal carrying UCI and at least one preamble is maintained to be unchanged, the total target transmission power is still larger than the maximum allowed transmission power, the UE further judges whether the UCI carried by the PUSCH signal contains ACK/NACK information, if so, the UE determines that the power adjustment priority of the at least one preamble is the highest, reduces the target transmission power of the at least one preamble signal, and maintains the target transmission power of the PUSCH signal carrying UCI to be unchanged until the total target transmission power is not larger than the maximum allowed transmission power; otherwise, determining that the power adjustment priority of one PUSCH carrying the UCI is the highest, adjusting the target transmission power of the PUSCH signal downwards, and maintaining the target transmission power of at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

Of course, if there are multiple PUSCH signals carrying UCI, the power adjustment method of the UE may be adjusted correspondingly with reference to the method b4, and details are not described herein again.

In a third case, at least one other uplink signal sent simultaneously with the at least one preamble is a PUCCH signal, that is, the UE sends the preamble and the uplink control signaling simultaneously on different UL CCs. Generally, a UE only transmits one PUCCH signal, and the PUCCH signal must carry UCI, and the most common application scenarios include: for example, the UE transmits PUCCH signals on UL CCs within the Pcell, and transmits preambles on one or respectively UL CCs within multiple scells. In this case, the UE may adopt any one of the following three ways a3, b3 and c3 (by way of example only, and not limitation):

a3, the UE determines the power adjustment priority from high to low as: preamble- > PUCCH signal.

That is, the UE directly determines that the power adjustment priority of at least one preamble signal is the highest without determining what information is carried in the PUCCH signal, and performs down-regulation on the target transmission power of the at least one preamble signal, and maintains the target transmission power of the PUCCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power;

b3, the UE determines the power adjustment priority from high to low as: PUCCH signal- > preamble.

That is, the UE determines that the power adjustment priority of the PUCCH signal is the highest without determining what information is carried in the PUCCH signal, and adjusts the target transmission power of the PUCCH signal downward, and maintains the target transmission power of at least one preamble signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

c3, if the UCI carried in the PUCCH signal sent by the UE contains ACK/NACK information, the UE determines that the power adjustment priority is from high to low as follows: preamble- > PUCCH signal; if UCI carried by PUCCH signals sent by the UE does not contain ACK/NACK information, the UE determines that the power adjustment priority is in the following sequence from high to low: PUCCH signal- > preamble; there are various cases where the PUCCH signal carries UCI including ACK/NACK information, for example, the PUCCH signal carries UCI including only ACK/NACK information, or carries UCI including ACK/NACK information and CSI, and so on, and similarly, there are various cases where the PUCCH signal does not carry UCI including ACK/NACK information, for example, the PUCCH signal carries UCI including only CSI, or carries UCI including CSI and other information, and so on.

That is, the UE needs to determine whether UCI carried by at least one PUSCH signal includes ACK/NACK information, and if so, determines that the power adjustment priority of at least one preamble is highest, and down-regulates the target transmission power of the at least one preamble signal, and maintains the target transmission power of the PUCCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power; otherwise, determining that the power adjustment priority of the PUCCH signal is highest, adjusting the target transmission power of the PUCCH signal downwards, and maintaining the target transmission power of at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

In a fourth case, the at least one other uplink signal sent simultaneously with the at least one preamble is a PUCCH signal and at least one PUSCH signal, that is, the UE sends the preamble, the uplink control signaling, and the uplink data simultaneously on different UL CCs. Generally, a UE only transmits one PUCCH signal, and the PUCCH signal must carry UCI, and the most common application scenarios include: for example, the UE transmits a PUCCH signal on a UL CC within the Pcell, and transmits a preamble and at least one PUSCH signal on one or respectively UL CCs within the multiple scells. In this case, the UE may adopt any one of the following three ways a4, b4 and c4 (by way of example only, and not limitation):

a4, the UE determines the power adjustment priority from high to low as:

PUSCH signal- > PUCCH signal- > preamble

Or

PUSCH signal- > preamble- > PUCCH signal.

That is, the UE directly determines that the power adjustment priority of the at least one PUSCH signal is the highest without determining what information is carried in the at least one PUSCH signal, and performs down-regulation on the target transmission power of the at least one PUSCH signal, and maintains the target transmission power of the at least one preamble and the PUCCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

b4, if one or more (usually one) PUSCH signals transmitted by the UE all carry UCI (uplink control information), the UE determines that the power adjustment priorities are in order from high to low: preamble- > a PUSCH signal carrying UCI- > a PUCCH signal, or preamble- > a PUCCH signal- > a PUSCH signal carrying UCI;

if one or more (usually, one) PUSCH signals transmitted by the UE do not carry UCI, the UE determines that the power adjustment priorities are in order from high to low: and carrying no PUSCH signal- > preamble- > PUCCH signal of UCI, or carrying no PUSCH signal- > PUCCH signal- > preamble of UCI.

That is, the UE needs to determine whether at least one PUSCH signal carries UCI, and if so, determines that the power adjustment priority of at least one preamble is highest, down-regulates the target transmission power of the at least one preamble signal, and maintains the target transmission power of at least one PUSCH signal and the PUCCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power; otherwise, determining that the power adjustment priority of at least one PUSCH signal is highest, adjusting the target transmission power of the at least one PUSCH signal downwards, and maintaining the target transmission power of at least one preamble and PUCCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

c4, if one or more (usually one) PUSCH signals transmitted by the UE all carry UCI containing ACK/NACK information, the UE determines that the order of the power adjustment priorities from high to low is: preamble- > a PUSCH signal- > PUCCH signal carrying UCI including ACK/NACK information, or preamble- > PUCCH signal- > a PUSCH signal carrying UCI including ACK/NACK information;

if none of one or more (usually one) PUSCH signals transmitted by the UE carries UCI including ACK/NACK information, the UE determines that the power adjustment priorities are in order from high to low: a PUSCH signal- > preamble- > PUCCH signal which does not carry UCI containing ACK/NACK information, or a PUSCH signal- > PUCCH signal- > preamble which does not carry UCI containing ACK/NACK information;

there are various cases where the PUSCH signal carries UCI including ACK/NACK information, for example, the PUSCH signal carries UCI including only ACK/NACK information, or carries UCI including ACK/NACK information and CSI (channel state information), and so on, and similarly, there are various cases where the PUSCH signal does not carry UCI including ACK/NACK information, for example, the PUSCH signal carries UCI including only CSI, or carries UCI including CSI and other information, and so on.

That is, the UE needs to determine whether the sent at least one PUSCH signal carries UCI, and further determines whether the UCI carried by the PUSCH signal includes ACK/NACK information, if so, determines that the power adjustment priority of the at least one preamble is highest, and down-regulates the target transmission power of the at least one preamble signal, and maintains the target transmission power of the at least one PUSCH signal and the PUCCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power; otherwise, determining that the power adjustment priority of at least one PUSCH signal is highest, adjusting the target transmission power of the at least one PUSCH signal downwards, and maintaining the target transmission power of at least one preamble and PUCCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

In the fourth case, if it is determined that the power adjustment priority of the at least one PUSCH signal is highest, the target transmission power of the at least one PUSCH signal is adjusted downward to a minimum threshold value, and after the target transmission power of the at least one preamble and PUCCH signal is maintained unchanged, the total target transmission power is still greater than the maximum allowed transmission power, the UE may continue to perform any one of the following operations (for example only, and is not limited thereto):

c41, the UE determines that the power adjustment priority of the current at least one preamble signal is the highest, adjusts the target transmitting power of the at least one preamble signal downwards, and maintains the target transmitting power of the PUCCH signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power;

c42, the UE judges whether UCI carried by the PUCCH signals contains ACK/NACK information, if so, the power adjustment priority of at least one current preamble is determined to be the highest, the target transmitting power of the at least one preamble signal is adjusted downwards, and the target transmitting power of the PUCCH signals is maintained unchanged until the total target transmitting power is not more than the maximum allowable transmitting power; otherwise, determining that the power adjustment priority of the current PUCCH signal is highest, adjusting the target transmission power of the PUCCH signal downwards, and maintaining the target transmission power of at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

On the other hand, in the fourth case, if one PUSCH signal of the at least one PUSCH signal carries UCI and the other PUSCH signals do not carry UCI, the power adjustment priority determined by the UE is the highest in the order from high to low, and the power adjustment priorities of the PUSCH signal not carrying UCI, the preamble, and the PUCCH signal carrying UCI are still arranged according to the manners described in a4, b4, and c4, for example:

a PUSCH signal not carrying UCI- > a PUSCH signal carrying UCI- > a PUCCH signal- > a preamble;

or

A PUSCH signal not carrying UCI- > a PUSCH signal carrying UCI- > preamble- > a PUCCH signal;

or

PUSCH signal- > preamble- > PUSCH signal- > PUCCH signal that does not carry UCI;

or

PUSCH signal- > preamble- > PUCCH signal- > PUSCH signal carrying UCI without carrying UCI;

or

A PUSCH signal- > preamble- > carrying UCI containing ACK/NACK information;

or

A PUSCH signal- > preamble- > PUCCH signal- > carrying UCI containing ACK/NACK information, which does not carry UCI;

a PUSCH signal without UCI- > a PUSCH signal without UCI containing ACK/NACK information- > preamble- > PUCCH signal;

or

A PUSCH signal without UCI- > a PUSCH signal without UCI containing ACK/NACK information- > a PUCCH signal- > a preamble;

in summary, in this case, the UE needs to first down-regulate the target transmit power of the PUSCH signal without UCI, and ensure that the target transmit power of other uplink signals is unchanged until the total target transmit power is not greater than the maximum allowed transmit power, and if the total target transmit power is still greater than the maximum allowed transmit power after adjustment, the UE needs to continuously adjust the target transmit powers of other uplink signals according to the determined power adjustment priorities in the order from high to low in a manner described in a4, b4, and c4 until the total target transmit power is not greater than the maximum allowed transmit power, which is not described herein again.

Based on the foregoing embodiments, in any of the second case, the third case, and the fourth case, if it is determined that the power adjustment priority of at least one preamble is highest, the UE may perform the following (by way of example only, and without limitation) when adjusting the target transmission power of the at least one preamble signal:

if only one preamble signal to be adjusted exists, the UE directly adjusts the target transmitting power of the preamble signal;

if the number of preamble signals to be adjusted is two or more, UE (user equipment) performs equal proportion down-regulation on the target transmitting power of each preamble; or, the target transmitting power of the preamble sent on the UL CC in the Scell is adjusted downward, and the target transmitting power of the preamble sent on the UL CC in the Pcell is maintained unchanged; or when the preamble is not sent on the UL CC in the Pcell, the target transmitting power of the preamble sent on the UL CC in the appointed Scell is adjusted downwards, and the target transmitting power of the preamble sent on the UL CC in the non-appointed Scell is maintained unchanged; and adjusting the target transmitting power of the competitive preamble down and keeping the target transmitting power of the non-competitive preamble unchanged.

In practical applications, under the above various conditions, after the UE performs the target transmission power adjustment on the uplink signal with the highest current power adjustment priority, if the total target transmission power is still greater than the maximum allowed transmission power, the UE needs to further perform further adjustment on the transmission power of the uplink signal with the next highest power adjustment priority and the next highest power adjustment priority in sequence according to the order from high priority to low priority until the total target transmission power is not greater than the maximum allowed transmission power.

In summary, in the embodiment of the present invention, when the UE simultaneously sends at least one preamble and at least one other uplink signal on different UL CCs, and when the total target transmitting power is greater than the maximum allowed transmitting power, the UE needs to determine the power adjustment priority of each uplink signal according to a preset rule, and the target transmitting power of at least one preamble or/and at least one other uplink signal is adjusted according to the power adjustment priority until the total target transmitting power is not greater than the maximum allowable transmitting power, so that, in a carrier aggregation scenario, when preamble and other uplink signals are transmitted simultaneously in different UL CCs, the UE can realize reasonable distribution of the transmitting power among different UL CCs, avoid the condition that the transmitting power of the uplink signal is influenced by overlarge total target transmitting power, therefore, the operation stability and robustness of the system are improved, and the overall performance of the system is also improved.

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

1. A method for adjusting transmission power is applied to a carrier aggregation scene, and is characterized by comprising the following steps:

respectively determining target transmitting power of at least one preamble sequence and at least one other uplink signal which are simultaneously sent on different uplink component carriers (UL CCs), and calculating total target transmitting power;

comparing the total target transmit power to a maximum allowed transmit power;

2. The method of claim 1, wherein the at least one other uplink signal comprises one or any combination of a preamble, a physical uplink control channel, PUCCH, signal and a physical uplink shared channel, PUSCH, signal.

3. The method according to claim 2, wherein the determining the power adjustment priority of the at least one preamble and the at least one other uplink signal respectively, and performing down-regulation on the target transmission power of the at least one preamble or/and the at least one other uplink signal according to the power adjustment priority until the total target transmission power is not greater than the maximum allowed transmission power includes:

and respectively determining the power adjustment priority of the at least one preamble and the at least one other uplink signal according to a preset rule and the signal type, and reducing the target transmitting power of the at least one preamble or/and the at least one other uplink signal corresponding to the specified power adjustment priority until the total target transmitting power is not greater than the maximum allowed transmitting power.

4. The method of claim 3, wherein if the at least one other uplink signal is a preamble, determining the power adjustment priority of the at least one preamble and the at least one other uplink signal according to a preset rule and a signal type, and adjusting down the target transmission power of the at least one preamble or/and the at least one other uplink signal corresponding to the specified power adjustment priority until the total target transmission power is not greater than the maximum allowed transmission power, comprises:

determining that the power adjustment priorities of the preambles are the same, and carrying out equal proportion down-regulation on the target transmitting power of the preambles until the total target transmitting power is not greater than the maximum allowable transmitting power; or,

determining that the power adjustment priority of a preamble sent on a UL CC in a secondary cell is highest, adjusting the target transmitting power of the preamble downwards, and maintaining the target transmitting power of the preamble sent on the UL CC in a primary cell unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

when the preamble is not sent on the UL CC in the main cell, determining that the power adjustment priority of the preamble sent on the UL CC in the appointed secondary cell is highest, adjusting the target transmitting power of the preamble downwards, and maintaining the target transmitting power of the preamble sent on the UL CC in the non-appointed secondary cell unchanged until the total target transmitting power is not more than the maximum allowed transmitting power; or,

determining that the power adjustment priority of the competitive preamble is the highest, adjusting the target transmission power of the preamble downwards, and maintaining the target transmission power of the non-competitive preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

5. The method of claim 3, wherein if the at least one other uplink signal is at least one PUSCH signal, determining power adjustment priorities of the at least one preamble and the at least one other uplink signal according to a preset rule and a signal type, and performing down-regulation on target transmission power of the at least one preamble or/and the at least one other uplink signal corresponding to the specified power adjustment priority until total target transmission power is not greater than a maximum allowed transmission power, comprises:

determining that the power adjustment priority of the at least one PUSCH signal is highest, adjusting the target transmission power of the at least one PUSCH signal downwards, and maintaining the target transmission power of the at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power; or,

confirming that the at least one PUSCH signal carries uplink control information UCI, or when the at least one PUSCH signal carries UCI containing ACK/NACK information, determining that the power adjustment priority of the at least one preamble is highest, adjusting the target transmitting power of the at least one preamble signal downwards, and maintaining the target transmitting power of the at least one PUSCH signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

when the at least one PUSCH signal is confirmed not to carry uplink control information UCI or not to carry UCI containing ACK/NACK information, determining that the power adjustment priority of the at least one PUSCH signal is highest, performing down-regulation on the target transmitting power of the at least one PUSCH signal, and maintaining the target transmitting power of the at least one preamble unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power;

when confirming that one PUSCH signal in the at least one PUSCH signal carries uplink control information UCI and at least one PUSCH signal does not carry UCI, determining that the power adjustment priority of the at least one PUSCH signal not carrying UCI is highest, adjusting the target transmission power of the at least one PUSCH signal downwards, and maintaining the target transmission power of the at least one PUSCH signal carrying UCI and the target transmission power of the at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

6. The method of claim 5, wherein after the target transmission power of the at least one PUSCH signal is adjusted downward to a minimum threshold value, and the target transmission power of the one PUSCH signal carrying UCI and the at least one preamble is maintained unchanged, if the total target transmission power is still greater than the maximum allowed transmission power, further determining whether the UCI carried by the one PUSCH signal contains ACK/NACK information, if so, determining that the power adjustment priority of the at least one preamble is highest, adjusting the target transmission power of the at least one preamble signal downward, and maintaining the target transmission power of the one PUSCH signal carrying UCI unchanged until the total target transmission power is not greater than the maximum allowed transmission power; otherwise, determining that the power adjustment priority of one PUSCH carrying the UCI is the highest, adjusting the target transmission power of the PUSCH signal downwards, and maintaining the target transmission power of the at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

7. The method of claim 3, wherein if the at least one other uplink signal is a PUCCH signal, determining power adjustment priorities of the at least one preamble and the at least one other uplink signal according to a preset rule and a signal type, and performing down-regulation on target transmit power of the at least one preamble or/and the at least one other uplink signal corresponding to the specified power adjustment priority until total target transmit power is not greater than a maximum allowed transmit power, comprises:

determining that the power adjustment priority of the at least one preamble signal is highest, adjusting the target transmission power of the at least one preamble signal downwards, and maintaining the target transmission power of the PUCCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power; or,

determining that the power adjustment priority of the PUCCH signal is highest, adjusting the target transmitting power of the PUCCH signal downwards, and maintaining the target transmitting power of the at least one preamble signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

when confirming that the PUCCH signal carries uplink control information UCI containing ACK/NACK information, determining that the power adjustment priority of the at least one preamble is highest, adjusting the target transmitting power of the at least one preamble signal downwards, and maintaining the target transmitting power of the PUCCH signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

and when confirming that the PUCCH signal does not carry uplink control information UCI containing ACK/NACK information, determining that the power adjustment priority of the PUCCH signal is the highest, adjusting the target transmitting power of the PUCCH signal downwards, and maintaining the target transmitting power of the at least one preamble unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power.

8. The method according to claim 3, wherein if the at least one other uplink signal is a PUCCH signal and at least one PUSCH signal, determining the power adjustment priority of the at least one preamble and the at least one other uplink signal according to a preset rule and a signal type, and performing down-regulation on the target transmission power of the at least one preamble or/and the at least one other uplink signal corresponding to the specified power adjustment priority until the total target transmission power is not greater than the maximum allowed transmission power, includes:

determining that the power adjustment priority of the at least one PUSCH signal is highest, adjusting the target transmission power of the at least one PUSCH signal downwards, and maintaining the target transmission power of the at least one preamble and PUCCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power;

confirming that the at least one PUSCH signal carries uplink control information UCI, or when the at least one PUSCH signal carries UCI containing ACK/NACK information, determining that the power adjustment priority of the at least one preamble is highest, performing down-regulation on the target transmitting power of the at least one preamble signal, and maintaining the target transmitting power of the at least one PUSCH signal carrying UCI and the PUCCH signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

when the at least one PUSCH signal is confirmed not to carry uplink control information UCI or not to carry UCI containing ACK/NACK information, determining that the power adjustment priority of the at least one PUSCH signal is highest, performing down-regulation on the target transmitting power of the at least one PUSCH signal, and maintaining the target transmitting power of the at least one preamble and PUCCH signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power.

9. The method of claim 8, wherein if it is determined that the power adjustment priority of the at least one PUSCH signal is highest, the target transmission power of the at least one PUSCH signal is adjusted downward to a minimum threshold value, and after the target transmission power of the at least one preamble and PUCCH signal is maintained unchanged, the total target transmission power is still greater than the maximum allowed transmission power, then the following operations are continuously performed:

when confirming that the PUCCH signal carries UCI containing ACK/NACK information, determining that the power adjustment priority of the at least one preamble is highest, adjusting the target transmitting power of the at least one preamble signal downwards, and maintaining the target transmitting power of the PUCCH signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

and when confirming that the PUCCH signal does not carry UCI containing ACK/NACK information, determining that the power adjustment priority of the PUCCH signal is the highest, adjusting the target transmitting power of the PUCCH signal downwards, and maintaining the target transmitting power of the at least one preamble unchanged until the total target transmitting power is not more than the maximum allowed transmitting power.

10. The method according to any of claims 5-9, wherein determining that the power adjustment priority of the at least one preamble is highest and adjusting down the target transmission power of the at least one preamble signal comprises:

if only one preamble signal to be adjusted exists, directly adjusting the target transmitting power of the preamble signal;

if the number of preamble signals to be adjusted is two or more, carrying out equal proportion down-regulation on the target transmitting power of each preamble; or, the target transmitting power of the preamble sent on the UL CC in the secondary cell is adjusted downward, and the target transmitting power of the preamble sent on the UL CC in the primary cell is maintained unchanged; or when the preamble is not sent on the UL CC in the primary cell, down-regulating the target transmission power of the preamble sent on the UL CC in the designated secondary cell, and maintaining the target transmission power of the preamble sent on the UL CC in the non-designated secondary cell unchanged; and adjusting the target transmitting power of the competitive preamble down and keeping the target transmitting power of the non-competitive preamble unchanged.

11. An apparatus for adjusting transmit power in a carrier aggregation scenario, comprising:

a calculating unit, configured to determine target transmit powers of at least one preamble sequence and at least one other uplink signal simultaneously sent on different uplink component carriers UL CC, and calculate a total target transmit power;

12. The apparatus according to claim 11, wherein the calculating unit calculates the target transmission power for at least one other uplink signal including one or any combination of preamble, physical uplink control channel, PUCCH, and physical uplink shared channel, PUSCH, signals.

13. The apparatus according to claim 12, wherein the adjusting unit determines power adjustment priorities of the at least one preamble and the at least one other uplink signal, respectively, and adjusts the target transmit power of the at least one preamble or/and the at least one other uplink signal downward according to the power adjustment priorities until the total target transmit power is not greater than the maximum allowed transmit power, including:

and the adjusting unit respectively determines the power adjustment priority of the at least one preamble and the at least one other uplink signal according to a preset rule and signal types, and performs down-regulation on the target transmitting power of the at least one preamble or/and the at least one other uplink signal corresponding to the specified power adjustment priority until the total target transmitting power is not greater than the maximum allowed transmitting power.

14. The apparatus according to claim 13, wherein if the at least one other uplink signal is a preamble, the adjusting unit determines the power adjustment priority of the at least one preamble and the at least one other uplink signal according to a preset rule and a signal type, and adjusts the target transmission power of the at least one preamble or/and the at least one other uplink signal corresponding to the specified power adjustment priority downward until the total target transmission power is not greater than the maximum allowed transmission power, including:

the adjusting unit determines that the power adjustment priorities of the preambles are the same, and performs equal proportion down-regulation on the target transmitting power of the preambles until the total target transmitting power is not greater than the maximum allowable transmitting power; or,

the adjusting unit determines that the power adjustment priority of the preamble sent on the UL CC in the secondary cell is highest, and adjusts the target transmitting power of the preamble, and maintains the target transmitting power of the preamble sent on the UL CC in the primary cell unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

when the preamble is not sent on the UL CC in the primary cell, the adjusting unit determines that the power adjustment priority of the preamble sent on the UL CC in the designated secondary cell is highest, and adjusts the target transmission power of the preamble, and maintains the target transmission power of the preamble sent on the UL CC in the non-designated secondary cell unchanged until the total target transmission power is not greater than the maximum allowed transmission power; or,

the adjusting unit determines that the power adjustment priority of the competitive preamble is the highest, adjusts the target transmitting power of the competitive preamble downwards, and maintains the target transmitting power of the non-competitive preamble unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power.

15. The apparatus of claim 13, wherein if the at least one other uplink signal is at least one PUSCH signal, the adjusting unit determines the power adjustment priority of the at least one preamble and the at least one other uplink signal according to a preset rule and a signal type, and adjusts the target transmission power of the at least one preamble or/and the at least one other uplink signal corresponding to the specified power adjustment priority downward until the total target transmission power is not greater than the maximum allowed transmission power, including:

the adjusting unit determines that the power adjustment priority of the at least one PUSCH signal is highest, adjusts the target transmission power of the at least one PUSCH signal downwards, and maintains the target transmission power of the at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power; or,

when the adjusting unit confirms that the at least one PUSCH signal carries uplink control information UCI or UCI containing ACK/NACK information, determining that the power adjustment priority of the at least one preamble is highest, adjusting the target transmitting power of the at least one preamble signal downwards, and maintaining the target transmitting power of the at least one PUSCH signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

when the adjusting unit confirms that the at least one PUSCH signal does not carry Uplink Control Information (UCI) or UCI containing ACK/NACK information, the adjusting unit determines that the power adjustment priority of the at least one PUSCH signal is highest, adjusts the target transmitting power of the at least one PUSCH signal downwards, and maintains the target transmitting power of the at least one preamble unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power;

when the adjusting unit confirms that one PUSCH signal in the at least one PUSCH signal carries uplink control information UCI and at least one PUSCH signal does not carry UCI, determining that the power adjustment priority of the at least one PUSCH signal not carrying UCI is highest, adjusting the target transmitting power of the at least one PUSCH signal downwards, and maintaining the target transmitting power of the PUSCH signal carrying UCI and the at least one preamble unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power.

16. The apparatus of claim 15, wherein the adjusting unit adjusts the target transmission power of the at least one PUSCH signal down to a minimum threshold, and maintains the target transmission power of the at least one preamble and the one PUSCH signal carrying UCI unchanged, and further determines whether the UCI carried by the one PUSCH signal contains ACK/NACK information if the total target transmission power is still greater than the maximum allowed transmission power, and if so, determines that the power adjustment priority of the at least one preamble is highest, adjusts the target transmission power of the at least one preamble signal down, and maintains the target transmission power of the one PUSCH signal carrying UCI unchanged until the total target transmission power is not greater than the maximum allowed transmission power; otherwise, determining that the power adjustment priority of one PUSCH carrying the UCI is the highest, adjusting the target transmission power of the PUSCH signal downwards, and maintaining the target transmission power of the at least one preamble unchanged until the total target transmission power is not greater than the maximum allowed transmission power.

17. The apparatus according to claim 13, wherein if the at least one other uplink signal is a PUCCH signal, the adjusting unit determines the power adjustment priority of the at least one preamble and the at least one other uplink signal according to a preset rule and a signal type, and adjusts the target transmit power of the at least one preamble or/and the at least one other uplink signal corresponding to the specified power adjustment priority down until the total target transmit power is not greater than the maximum allowed transmit power, including:

the adjusting unit determines that the power adjustment priority of the at least one preamble signal is highest, adjusts the target transmitting power of the at least one preamble signal downwards, and maintains the target transmitting power of the PUCCH signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

the adjusting unit determines that the power adjustment priority of the PUCCH signal is highest, adjusts the target transmitting power of the PUCCH signal downwards, and maintains the target transmitting power of the at least one preamble signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

when the adjusting unit confirms that the PUCCH signal carries uplink control information UCI containing ACK/NACK information, determining that the power adjustment priority of the at least one preamble is highest, adjusting the target transmitting power of the at least one preamble signal downwards, and maintaining the target transmitting power of the PUCCH signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

and when the adjusting unit confirms that the PUCCH signal does not carry uplink control information UCI containing ACK/NACK information, determining that the power adjustment priority of the PUCCH signal is highest, adjusting the target transmitting power of the PUCCH signal downwards, and maintaining the target transmitting power of the at least one preamble unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power.

18. The apparatus of claim 13, wherein if the at least one other uplink signal is a PUCCH signal and at least one PUSCH signal, the adjusting unit determines the power adjustment priority of the at least one preamble and the at least one other uplink signal according to a preset rule and a signal type, and adjusts the target transmit power of the at least one preamble or/and the at least one other uplink signal corresponding to the specified power adjustment priority down until the total target transmit power is not greater than the maximum allowed transmit power, including:

the adjusting unit determines that the power adjustment priority of the at least one PUSCH signal is highest, adjusts the target transmission power of the at least one PUSCH signal downwards, and maintains the target transmission power of the at least one preamble and PUCCH signal unchanged until the total target transmission power is not greater than the maximum allowed transmission power;

the adjusting unit determines that the power adjustment priority of the at least one preamble is highest when the at least one PUSCH signal carries uplink control information UCI or UCI containing ACK/NACK information, and adjusts the target transmitting power of the at least one preamble signal downwards, and maintains the target transmitting power of the at least one PUSCH signal and PUCCH signal carrying UCI unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

and when the adjusting unit confirms that the at least one PUSCH signal does not carry Uplink Control Information (UCI) or UCI containing ACK/NACK information, determining that the power adjustment priority of the at least one PUSCH signal is highest, adjusting the target transmitting power of the at least one PUSCH signal downwards, and maintaining the target transmitting power of the at least one preamble and PUCCH signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power.

19. The apparatus of claim 18, wherein if the adjusting unit determines that the power adjustment priority of the at least one PUSCH signal is highest, the target transmission power of the at least one PUSCH signal is adjusted downward to a lowest threshold value, and after the target transmission power of the at least one preamble and PUCCH signal is maintained unchanged, a total target transmission power is still greater than a maximum allowed transmission power, the following operations are continuously performed:

when the adjusting unit confirms that the PUCCH signal carries UCI containing ACK/NACK information, determining that the power adjustment priority of the at least one preamble is highest, adjusting the target transmitting power of the at least one preamble signal downwards, and maintaining the target transmitting power of the PUCCH signal unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power; or,

and when the adjusting unit confirms that the PUCCH signal does not carry UCI containing ACK/NACK information, determining that the power adjustment priority of the PUCCH signal is highest, adjusting the target transmitting power of the PUCCH signal downwards, and maintaining the target transmitting power of the at least one preamble unchanged until the total target transmitting power is not greater than the maximum allowed transmitting power.

20. The apparatus according to any of claims 15-19, wherein the adjusting unit determines that the power adjustment priority of the at least one preamble is highest, and when performing down-regulation on the target transmission power of the at least one preamble signal, includes:

if only one preamble signal to be adjusted exists, the adjusting unit directly adjusts the target transmitting power of the preamble signal;

if the number of preamble signals to be adjusted is two or more, the adjusting unit carries out equal proportion down-regulation on the target transmitting power of each preamble; or, the target transmitting power of the preamble sent on the UL CC in the secondary cell is adjusted downward, and the target transmitting power of the preamble sent on the UL CC in the primary cell is maintained unchanged; or when the preamble is not sent on the UL CC in the primary cell, down-regulating the target transmission power of the preamble sent on the UL CC in the designated secondary cell, and maintaining the target transmission power of the preamble sent on the UL CC in the non-designated secondary cell unchanged; and adjusting the target transmitting power of the competitive preamble down and keeping the target transmitting power of the non-competitive preamble unchanged.