Patent Description:
A Long Term Evolution-Advanced (Long Term Evolution-Advanced, "LTE-A" for short) system is an evolution and enhancement to a 3rd Generation Partnership Project (3rd Generation Partnership Project, "3GPP" for short) Long Term Evolution (Long Term Evolution, "LTE" for short) system. A carrier aggregation (Carrier Aggregation, "CA" for short) technology, also known as a spectrum aggregation (Spectrum Aggregation) technology or a bandwidth extension (Bandwidth Extension) technology, is introduced in the LTE-A system, to ensure that a peak data rate provided by a fourth generation communications technology can satisfy requirements of the International Telecommunication Union. In carrier aggregation, spectrums of two or more component carriers (Component Carrier) are aggregated to achieve wider transmission bandwidth, where the spectrums of the component carriers may be contiguous continuous spectrums, or may be non-contiguous spectrums within a same frequency band or even discontinuous spectrums in different frequency bands. An LTE Rel-<NUM>/<NUM> user equipment (User Equipment, "UE" for short) can access only one of the component carriers to receive and send data; whereas, an LTE-A user equipment can simultaneously access multiple component carriers according to its capability and service requirement to receive and send data. To support technologies such as dynamic scheduling, downlink multiple input multiple output (Multiple Input Multiple Output, "MIMO" for short) transmission, and hybrid automatic repeat request, a terminal needs to feed back multiple types of uplink control information (Uplink Control Information, "UCI" for short), including channel state information (Channel State Information, "CSI" for short), hybrid automatic repeat request (Hybrid Automatic Repeat request, "HARQ" for short) information, a scheduling request (Scheduling Request, "SR" for short), and the like, to a base station through a physical uplink control channel (Physical Uplink Control Channel, "PUCCH" for short) and a physical uplink shared channel (Physical Uplink Shared Channel, "PUSCH" for short), where the hybrid automatic repeat request information may be simply called acknowledgment (Acknowledgment, "ACK" for short)/negative acknowledgment (Negative Acknowledgement, "NACK" for short), or the hybrid automatic repeat request information may be called hybrid automatic repeat request acknowledgment HARQ-ACK.

However, in a CA system between base stations, because data scheduling of multiple downlink carriers is independently performed by each base station, which means that uplink control information (Uplink Control Information, "UCI" for short) of each carrier is separately fed back to a base station of each carrier. In which case, a UE may have to transmit UCI on multiple carriers, for example, multiple PUCCHs are simultaneously transmitted or multiple PUSCHs carrying UCI are transmitted. Total transmit power of all to-be-transmitted uplink channels and/or sounding reference signals (Sounding Reference Signal, "SRS" for short) exceeds maximum transmit power of the user equipment, and consequently, the user equipment cannot send information properly.

<CIT> discloses an apparatus and a method for uplink power control for a wireless transmitter/receiver unit utilizing multiple carriers. <CIT> discloses methods and systems for transmitting uplink control information in an LTE Advanced system. <CIT> relates to a method for prioritizing different types of data to transmit.

The present invention provides a power determining method according to claim <NUM> and a user equipment according to claim <NUM>. This can solve the problem in which a sum of transmit powers of transmission objects of a user equipment is greater than a maximum transmit power of the user equipment.

Therefore, in the embodiments of the present invention, an initial transmit power of each transmission object in a transmission object set is determined, where the transmission object set includes all to-be-transmitted uplink channels and/or SRSs; when a sum of initial transmit powers of all the transmission objects in the transmission object set is greater than a maximum transmit power, a power reduction operation is performed based on a priority sequence of information corresponding to the transmission objects, so as to acquire an available transmit power of each transmission object in the transmission object set, where a sum of available transmit powers of all the transmission objects in the transmission object set is not greater than the maximum transmit power; and each transmission object in the transmission object set is sent according to the available transmit power corresponding to each transmission object in the transmission object set. This can solve the problem in which a sum of transmit powers of all to-be-transmitted objects of a user equipment is greater than a maximum transmit power of the user equipment.

To describe the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments or the prior art.

The following clearly and completely describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are a part rather than all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

It should be understood that, the technical solutions of the present invention may be applied to various communications systems, such as: a Global System for Mobile Communications (Global System of Mobile communication, "GSM" for short) system, a Code Division Multiple Access (Code Division Multiple Access, "CDMA" for short) system, a Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, "WCDMA" for short) system, a general packet radio service (General Packet Radio Service, "GPRS" for short), a Long Term Evolution (Long Term Evolution, "LTE" for short) system, an LTE frequency division duplex (Frequency Division Duplex, "FDD" for short) system, an LTE time division duplex (Time Division Duplex, "TDD" for short), a Universal Mobile Telecommunications System (Universal Mobile Telecommunication System, "UMTS" for short) or the like.

In the embodiments of the present invention, a base station may be a base station (Base Transceiver Station, "BTS" for short) in the GSM or CDMA, may also be a base station (NodeB, "NB" for short) in the WCDMA, and may further be an evolved NodeB (Evolved NodeB, "eNB" or "e-NodeB" for short) in the LTE, which is not limited in the present invention.

A user equipment (User Equipment, "UE" for short) may also be referred to as a terminal (Terminal) and may communicate with one or more core networks by using a radio access network (Radio Access Network, "RAN" for short).

In addition, the terms "system" and "network" may be used interchangeably in this specification. The term "and/or" in this specification describes only an association relationship for describing associated objects and represents that three relationships may exist.

<FIG> shows a schematic flowchart of a power determining method <NUM>. The method <NUM> may be performed by a user equipment. As shown in <FIG>, the method <NUM> includes:.

Specifically, when uplink channels and/or SRSs (namely, a transmission object set) corresponding to multiple carriers need to be transmitted simultaneously, a user equipment may first calculate an initial transmit power of each transmission object in the transmission object set. After calculating the initial transmit power of each transmission object, the user equipment may compare a sum of initial transmit powers of all the transmission objects with a maximum transmit power; when the sum of the initial transmit powers of all the transmission objects is less than or equal to the maximum transmit power, the user equipment may directly send each transmission object in the transmission object set, or when the sum of the initial transmit powers of all the transmission objects is greater than the maximum transmit power, the user equipment needs to perform a power reduction operation. Specifically, the user equipment may first determine a priority of each transmission object according to a priority sequence of information corresponding to the transmission objects and corresponding information of each transmission object in the transmission object set, and then may perform a power reduction operation according to the priority of each transmission object, so as to acquire an available transmit power of each transmission object in the transmission object set, where a sum of available transmit powers of all the transmission objects in the transmission object set is not greater than the maximum transmit power. After acquiring the available transmit power of each transmission object in the transmission object set, the user equipment may send each transmission object in the transmission object set according to the available transmit power corresponding to each transmission object in the transmission object set.

It should be noted that, in an actual implementation process, due to a device reason or some other reasons, the sum of the available transmit powers of all the transmission objects in the transmission object set may exceed the maximum transmit power of the user equipment within a very short period of time; however, after the component becomes stable, the sum of the available transmit powers of all the transmission objects in the transmission object set is not greater than the maximum transmit power.

In this embodiment of the present invention, an initial transmit power of a transmission object is a transmit power calculated for the transmission object according to a related power control rule before a user equipment performs a power reduction operation. If a sum of initial transmit powers of all transmission objects to be transmitted by the user equipment does not exceed a maximum transmit power of the user equipment, the user equipment needs to transmit a corresponding transmission object according to the initial transmit power. If the sum of the initial transmit powers of all the transmission objects to be transmitted by the user equipment exceeds the maximum transmit power of the user equipment, the user equipment needs to perform a power reduction operation to acquire an available transmit power of each transmission object.

It should be understood that in this embodiment of the present invention, an available transmit power of a transmission object may be equal to an initial transmit power of the transmission object, or may be not equal to the initial transmit power of the transmission object. For example, for a transmission object with a high priority, an available transmit power of the transmission object may be equal to an initial transmit power thereof; however, for a transmission object with a low priority, an available transmit power of the transmission object may be less than an initial transmit power thereof.

In this embodiment of the present invention, uplink channels and/or SRSs that correspond to multiple carriers and need to be simultaneously transmitted may be uplink channels and/or SRSs that correspond to the multiple carriers and need to be transmitted in a same subframe. However, since subframe numbers for sending different uplink channels and/or SRSs may not be the same, the uplink channels and/or SRSs that correspond to the multiple carriers and need to be simultaneously transmitted may also be construed as objects that need to be transmitted at a time point or within a period of time.

In this embodiment of the present invention, the transmission object set includes all to-be-transmitted uplink channels and/or SRSs, which means that: in a case in which only uplink channels need to be transmitted, the transmission object set includes all the to-be-transmitted uplink channels; in a case in which only SRSs need to be transmitted, the transmission object set includes all the to-be-transmitted SRSs; and in a case in which both uplink channels and SRSs need to be transmitted, the transmission object set includes all the to-be-transmitted uplink channels and all the to-be-transmitted SRSs.

It should be understood that in this embodiment of the present invention, the priority sequence of the information corresponding to the transmission objects may be preset, or may be dynamically set by the user equipment according to an upper-layer configuration, or may be acquired by the user equipment by using another approach, which is not limited by this embodiment of the present invention.

In this embodiment of the present invention, the priority sequence of the information corresponding to the transmission objects may include at least one of the following:
a priority sequence of types of the transmission objects, a priority sequence of UCI carried in the transmission objects, and a priority sequence of carriers corresponding to the transmission objects.

In this embodiment of the present invention, the performing a power reduction operation based on a priority sequence of information corresponding to the transmission objects may include:.

In this embodiment of the present invention, the user equipment may determine the priority of each transmission object in the transmission object set only according to the priority sequence of the types of the transmission objects and a type of each transmission object in the transmission object set; may determine the priority of each transmission object in the transmission object set only according to the priority sequence of the UCI carried in the transmission objects and UCI carried in each transmission object in the transmission object set; or apparently, may also determine the priority of each transmission object only according to the priority sequence of the carriers corresponding to the transmission objects and a carrier corresponding to each transmission object in the transmission object set.

In this embodiment of the present invention, the user equipment may also first determine the priority of each transmission object according to one of the following criteria: the priority sequence of the types of the transmission objects, the priority sequence of the UCI carried in the transmission objects, and the priority sequence of the carriers corresponding to the transmission objects. In the event that there are transmission objects sharing a same priority, the user equipment then determines a priority of same-priority transmission objects according to one or two of the following criteria other than the selected criterion: the priority sequence of the types of the transmission objects, the priority sequence of the UCI carried in the transmission objects, and the priority sequence of the carriers corresponding to the transmission objects.

For example, a priority of each transmission object in a transmission object set S may be first determined according to a priority sequence of types of transmission objects. If it is determined, according to the priority sequence of the types of the transmission objects, that priorities of multiple transmission objects are the same, and if it is assumed that the multiple same-priority transmission objects determined according to the priority sequence of the types of the transmission objects form a transmission object set S1, a priority of each transmission object in the transmission object set S1 is then further determined according to a priority sequence of UCI carried in the transmission objects. If it is determined, according to the priority sequence of the UCI carried in the transmission objects, that priorities of multiple transmission objects in the transmission object set S1 are the same, and if it is assumed that the multiple same-priority transmission objects in the transmission object set S1 form a set S2, a priority of each transmission object in the set S2 is then further determined according to a priority sequence of carriers corresponding to the transmission objects. If the set S2, which is formed from the multiple same-priority transmission objects in the transmission object set S1, includes a PUCCH1 carrying an HARQ-ACK for transmission and a PUCCH2 carrying an HARQ-ACK for transmission, prioritization may also be performed according to the number of HARQ-ACK bits to be transmitted on the PUCCH1 and PUCCH2, for example, a PUCCH with more HARQ-ACK bits has a higher priority than a PUCCH with fewer HARQ-ACK bits.

For example, the user equipment may determine the priority of each transmission object in the transmission object set according to the priority sequence of the types of the transmission objects and the type of each transmission object in the transmission object set; and.

In this embodiment of the present invention, the types of the transmission objects may be classified into PRACH, PUCCH, PUSCH carrying UCI, PUSCH not carrying UCI, and SRS, where the priority sequence of the types of the transmission objects may include at least one of the following:.

Specifically, the priority sequence of the types of the transmission objects may also be that: a priority of a PRACH is higher than a priority of a PUCCH, a priority of a PUCCH is higher than a priority of a PUSCH carrying UCI, a priority of a PUSCH carrying UCI is higher than a priority of a PUSCH not carrying UCI, and a priority of a PUSCH not carrying UCI is higher than a priority of an SRS. Alternatively, the priority sequence of the types of the transmission objects may also be that: a priority of a PRACH is higher than a priority of a PUCCH, a priority of a PUCCH is equal to a priority of a PUSCH carrying UCI, a priority of a PUSCH carrying UCI is higher than a priority of a PUSCH not carrying UCI, and a priority of a PUSCH not carrying UCI is higher than a priority of an SRS.

In this embodiment of the present invention, if a priority of a PUCCH is the same as a priority of a PUSCH carrying UCI, relatively important UCI information can be better protected in some application scenarios. For example, when UCI in a UCI-carrying PUSCH is an HARQ-ACK and UCI carried in a PUCCH is channel state information, a priority of the PUCCH and a priority of the PUSCH carrying UCI are first set to be the same, and then the PUCCH and the PUSCH carrying UCI that have a same priority are further prioritized according to a priority of the carried UCI, to be specific, it can be determined that the PUSCH carrying hybrid automatic repeat request information has a higher priority. In this way, higher protection is provided for the hybrid automatic repeat request information and transmission performance for this type of important information is guaranteed. Same or similar effects can be achieved in a dual connectivity (Dual connectivity) scenario, or in a scenario in which UCI can be simultaneously transmitted on multiple uplink carriers, or in a scenario in which multiple PUCCHs are allowed for simultaneous transmission on multiple carriers.

In this embodiment of the present invention, UCI carried in a transmission object may be classified into hybrid automatic repeat request information, a scheduling request, and channel state information, where the priority sequence of the UCI carried in the transmission objects may include at least one of the following:.

In this embodiment of the present invention, the priority sequence of the UCI carried in the transmission objects may include at least one of the following:.

It should be understood that in this embodiment of the present invention, the determining the priority of each transmission object according to the UCI carried in the transmission objects may be: determining the priority of each transmission object according to a priority of UCI content that has a highest priority among contents of a respective UCI carried in each transmission object, for example, UCI information carried in a PUCCH channel <NUM> includes only a scheduling request, and UCI information carried in a PUCCH channel <NUM> includes only a channel quality indicator and a precoding matrix; in this case, if prioritization is performed according to a priority of carried content that has a highest priority, a priority of the PUCCH channel <NUM> is higher than a priority of the PUCCH channel <NUM>.

In this embodiment of the present invention, the priority sequence of the carriers corresponding to the transmission objects may include at least one of the following:
a priority sequence determined based on index sequence numbers of the carriers, a carrier priority sequence configured by an upper layer, a priority sequence determined based on duplex modes of the carriers, a priority sequence determined based on transmission points corresponding to the carriers, and a priority sequence determined based on an RRC connection state of carriers.

In this embodiment of the present invention, indexes of carriers may be preconfigured, where the preconfigured carrier indexes may be set according to importance of the carriers to the user equipment. If indexing is performed in descending order of importance, that is to say, a carrier of high importance is assigned a small index, a priority rule corresponding to the carrier indexes is that the carrier indexes are sequenced from highest to lowest priority and a carrier with a small carrier index has a high priority. Apparently, indexing may also be performed in ascending order of importance, that is to say, a carrier of high importance is assigned a large index; in this case, a priority rule corresponding to the carrier indexes is that the carrier indexes are sequenced from highest to lowest priority and a carrier with a small carrier index has a lower priority.

In this embodiment of the present invention, a priority sequence corresponding to carriers, from highest to lowest priority, may be configured by an upper layer, specifically, the priority sequence may be notified by the upper layer by using semi-static signaling.

In this embodiment of the present invention, carriers may correspond to corresponding transmission points, or may correspond to corresponding base stations, for example, a carrier <NUM> comes from a macro base station, and a carrier <NUM> comes from a pico base station; in this case, priorities of the carriers are priorities of the transmission points or priorities of the base stations. In an example of aggregating two uplink carriers for the user equipment, the priorities corresponding to the carriers may be that: a priority of a carrier corresponding to a macro base station (Macro) is higher than a priority of a carrier corresponding to a pico base station (Pico). This case is mainly seen in a scenario in which radio resource control (Radio Resource Control, "RRC" for short) control information and/or a semi-persistent scheduling SPS service of the user equipment is to be transmitted, because better protection can be provided for RRC control information and/or semi-persistent scheduling (Semi Persistent Scheduling, "SPS" for short) service data.

In this embodiment of the present invention, the priority sequence of the carriers corresponding to the transmission objects may include: a priority sequence determined based on duplex modes of the carriers, for example, a priority of a carrier whose duplex mode is frequency division duplex (Frequency Division Duplexing, FDD) is lower than a priority of a carrier whose duplex mode is time division duplex (Time Division Duplexing, TDD).

Specifically, the priority sequence based on the information corresponding to the transmission objects may include at least one of the following:.

In all the embodiments of the present invention, when the priority sequence of the carriers corresponding to the transmission objects is determined based on duplex modes of the carriers, it is beneficial to a scenario in which both TDD and FDD are applied. For example, in this scenario, if a PUCCH transmitted on a carrier whose duplex mode is FDD and a PUCCH transmitted on a carrier whose duplex mode is TDD coexist and both the PUCCHs are PUCCHs carrying hybrid automatic repeat request information, generally, the PUCCH transmitted on the TDD carrier carries HARQ-ACKs of multiple downlink subframes, and the PUCCH transmitted on the FDD carrier carries an HARQ-ACK of only one downlink subframe. In this case, according to the priority sequence determined based on carrier duplex modes, a priority of the PUCCH transmitted on the TDD carrier is higher than a priority of the PUCCH transmitted on the FDD carrier, which in turn ensures PUCCH transmission performance on the TDD carrier, and eliminates the need to retransmit data of the multiple downlink subframes on the TDD carrier, and ultimately improves system performance.

In this embodiment of the present invention, the priority sequence of the carriers corresponding to the transmission objects may include a priority sequence determined based on RRC connection states of carriers, for example, a priority of a carrier supporting RRC connection is higher than a priority of a carrier not supporting RRC connection, or a priority of a carrier carrying RRC information is higher than a priority of a carrier not carrying RRC information. In this embodiment of the present invention, the user equipment may first determine a priority of a transmission object according to the priority sequence determined based on the RRC connection states. For example, if a carrier <NUM> is a carrier supporting RRC connection and a carrier <NUM> is a carrier not supporting RRC connection, a priority of the carrier <NUM> is higher than a priority of the carrier <NUM>, regardless of types of transmission objects corresponding to the carrier <NUM> and the carrier <NUM>, or regardless of UCI carried in transmission objects corresponding to the carrier <NUM> and the carrier <NUM>. When there are still same-priority transmission objects after the priorities of the transmission objects are determined according to the priority sequence determined based on the RRC connection states, the priorities of the transmission objects may be further determined according to priorities of corresponding types of the transmission objects and/or priorities of the UCI carried in the transmission objects.

In this embodiment of the present invention, the performing the power reduction operation according to the priority of each transmission object may include:
performing the power reduction operation for the transmission objects in the transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, until a sum of acquired available transmit powers of all the transmission objects in the transmission object set is less than or equal to the maximum transmit power.

In this embodiment of the present invention, when performing the power reduction for the transmission objects one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, it is satisfied that if an available transmit power of a transmission object with a priority of n is not <NUM>, an available transmit power of a transmission object with a priority of n+<NUM> is equal to an initial transmit power of the transmission object with the priority of n+<NUM>, where m is the number of transmission objects in the transmission object set, m ≥ n ≥ <NUM>, and a transmission object with a priority of <NUM> has a lowest priority.

That is to say, after the priority of each transmission object is determined based on the priority sequence, power reduction may be first performed on transmit power of a transmission object with a lowest priority. If an initial transmit power of the transmission object with a lowest priority can satisfy a condition for starting power reduction, specifically, the initial transmit power of the transmission object with a lowest priority is greater than a difference between the initial transmit power of each transmission object in the transmission object set and the maximum transmit power of the user equipment, power reduction is performed only on the transmission object with a lowest priority to obtain an available transmit power of the transmission object with a lowest priority, and available transmit powers of other transmission objects are equal to their initial transmit powers. If the initial transmit power of the transmission object with a lowest priority cannot satisfy the condition for starting power reduction, power reduction is first performed on the transmission object with a lowest priority to obtain its available transmit power, which is <NUM>, and then power reduction is performed on a transmission object with a second lowest priority. If an initial transmit power of the transmission object with the second lowest priority can satisfy a condition for starting power reduction, specifically, a sum of the initial transmit power of the transmission object with a lowest priority and the initial transmit power of the transmission object with the second lowest priority is greater than the difference between the initial transmit power of each transmission object in the transmission object set and the maximum transmit power of the user equipment, power reduction is performed on the transmission object with the second lowest priority to obtain its available transmit power, and available transmit powers of other transmission objects (other transmission objects than the transmission object with the second lowest priority and the transmission object with a lowest priority, in the transmission object set) are equal to their initial transmit powers. If the initial transmit power of the transmission object with the second lowest priority cannot satisfy the condition for starting power reduction, power reduction is performed on a transmission object with the third lowest priority, and so on, until the sum of the available transmit powers of all the transmission objects in the transmission object set is less than or equal to the maximum transmit power of the user equipment.

In this embodiment of the present invention, when there are multiple transmission objects with a same priority, equal power reduction is performed on the multiple transmission objects with the same priority.

In this embodiment of the present invention, an operation of equal power reduction may be to perform equal power reduction on objects requiring power reduction according to a ratio of initial transmit power to available transmit power, where the ratio is the same for each transmission object undergoing power reduction; or may be to subtract a same amount of power from initial transmit power of an object requiring power reduction.

It is assumed that same-priority transmission objects requiring power reduction include transmission objects A, B, and C, where an initial transmit power corresponding to the transmission object A is a, an initial transmit power corresponding to the transmission object B is b, a transmit power of the transmission object C is c, and an amount of power that needs to be reduced is d. An equal power reduction operation may be directly performed on all the transmission objects according to a ratio, specifically, a coefficient w may be obtained according to a formula w (a + b + c) = d, so as to obtain power that needs to be reduced for the transmission objects A, B, and C, which is wa, wb, and wc, respectively, that is, available transmit power is a-wa, b-wb, and c-wc, respectively. Alternatively, a same amount of power may also be subtracted from the initial transmit powers of the transmission objects requiring power reduction, specifically, e may be obtained according to a formula 3e = d; the amount of power that needs to be reduced for the transmission objects A, B, and C is d/<NUM>, that is to say, available transmit powers are a-d/<NUM>, b-d/<NUM>, and c-d/<NUM>, respectively.

It should be understood that power reduction may also be performed on transmission objects in other manners in this embodiment of the present invention. For example, power reduction may be performed on all the transmission objects, for example, according to a formula ma + nb + pc = D, where a numerical value relationship between m, n, and p may be determined according to priorities of corresponding transmission objects, so as to obtain transmit powers of the transmission objects A, B and C, which are ma, nb, and pc, respectively.

Apparently, in this embodiment of the present invention, power reduction may also be performed in other manners, which is not limited by this embodiment of the present invention.

To understand the present invention more comprehensively, the following describes the power determining method of the present invention with reference to several examples. In the following examples, it is assumed that two uplink carriers, namely, a carrier <NUM> and a carrier <NUM>, are aggregated for the user equipment, multiple to-be-transmitted transmission objects need to be sent in a same subframe, and a sum of transmit powers of the transmission objects is greater than the maximum transmit power of the user equipment. For ease of description, a transmit power in the following examples is represented by a linear value of transmit power, or apparently, may be represented by another value, for example, an absolute value of transmit power or a relative value of transmit power.

Example <NUM>: To-be-transmitted objects are a PUCCH channel <NUM> that needs to be transmitted on the carrier <NUM> and a PUCCH channel <NUM> that needs to be transmitted on the carrier <NUM>. In this example, only priorities of the channels are compared. The priorities of the two channels are the same, and therefore equal power reduction may be performed on transmit powers of the two PUCCH channels. A reduction coefficient may be obtained according to the following formula: w · P̂PUCCH,<NUM> (i) + w · P̂PUCCH,<NUM> (i) = P̂CMAX (i) , where P̂CMAX (i) is a linear value of maximum transmit power, -P̂PUCCH,<NUM> (i) is a linear value of initial transmit power of the PUCCH channel <NUM>, and P̂PUCCH,<NUM>(i) is a linear value of initial transmit power of the PUCCH channel <NUM>. Therefore, after the power reduction, linear values of transmit powers of the PUCCHs on the carrier <NUM> and carrier <NUM> are w - P̂PUCCH,<NUM> (i) and w · P̂PUCCfl,<NUM> (i), respectively.

Example <NUM>: To-be-transmitted objects are a PUCCH channel <NUM> that needs to be transmitted on the carrier <NUM> and a PUCCH channel <NUM> that needs to be transmitted on the carrier <NUM>, where UCI transmitted on the PUCCH channel <NUM> is hybrid automatic repeat request information and UCI transmitted on the PUCCH channel <NUM> is a CQI/PMI. Since the two channels are both PUCCH channels, prioritization may be performed according to the UCI separately carried in the two channels. A priority of hybrid automatic repeat request information is higher than a priority of a CQI/PMI, and therefore a priority of the PUCCH channel <NUM> is higher than a priority of the PUCCH channel <NUM>, which means that a transmit power of the PUCCH on the carrier <NUM> may be reduced to obtain an available transmit power. In which case, a linear value of the available transmit power of the PUCCH channel <NUM> on the carrier <NUM> is P̂PUCCH,<NUM> (i) = P̂CMAX (i) - P̂PUCCH,<NUM> (i) , where P̂CMAX (i) is a linear value of maximum transmit power and P̂PUCCH,<NUM> (i) is a linear value (which is equal to a linear value of initial transmit power) of available transmit power of the PUCCH channel <NUM>.

Example <NUM>: To-be-transmitted objects are a PUSCH channel <NUM> that carries UCI and needs to be transmitted on the carrier <NUM> and a PUSCH channel <NUM> that carries UCI and needs to be transmitted on the carrier <NUM>, where the UCI carried in the PUSCH channel <NUM> is hybrid automatic repeat request information and a CQI/PMI, while the uplink control information carried in the PUSCH channel <NUM> is a CQI/PMI. Since the two channels are both PUSCHs, prioritization may be performed according to the UCI separately carried in the two channels. A priority of hybrid automatic repeat request information is higher than a priority of a CQI/PMI, and therefore a priority of the PUSCH channel <NUM> is higher than a priority of the PUSCH channel <NUM>, which means that a transmit power of the PUSCH on the carrier <NUM> may be reduced to obtain an available transmit power. In which case, a linear value of the available transmit power of the PUSCH channel <NUM> on the carrier <NUM> is P̂PUSCH_UCI,<NUM> (i) = P̂CMAX (i) - P̂PUSCH_UCI,<NUM> (i) , where P̂CMAX (i) is a linear value of maximum transmit power and P̂PUSCH_UCI,<NUM> (i) is a linear value of available transmit power (which is equal to a linear value of initial transmit power) of the PUSCH channel <NUM>.

Example <NUM>: In the two uplink carriers aggregated for the user equipment, the carrier <NUM> comes from a macro base station, and the carrier <NUM> comes from a pico base station. If channels to be transmitted by the user equipment in the subframe are two PUSCH channels, to-be-transmitted objects are a PUSCH channel <NUM> that does not carry UCI and needs to be transmitted on the carrier <NUM>, and a PUSCH channel <NUM> that does not carry UCI and needs to be transmitted on the carrier <NUM>. Since the carrier <NUM> comes from a macro base station and the carrier <NUM> comes from a pico base station, a priority of the PUSCH channel <NUM> is higher than a priority of the PUSCH channel <NUM>, which means that a transmit power of the PUSCH channel <NUM> may be reduced to obtain an available transmit power. In which case, a linear value of the available transmit power of the PUSCH channel <NUM> corresponding to the pico base station is PPUSCH,pico (i) = P̂CMAX (i) = P̂PUSCH,Marcro (i) , where P̂CMAX (i) is a linear value of maximum transmit power, and P̂PUSCH,Macro(i) is a linear value of available transmit power (which is equal to a linear value of initial transmit power) of the PUSCH channel <NUM>.

Example <NUM>: To-be-transmitted objects are a PUCCH channel <NUM> that needs to be transmitted on the carrier <NUM>, and a PUSCH channel <NUM> that carries UCI and needs to be transmitted on the carrier <NUM>. The channels may be compared. Since a priority of a PUCCH channel is higher than a priority of a PUSCH channel, a priority of the PUCCH channel <NUM> is higher than a priority of the PUSCH channel <NUM>, which means that a transmit power of the PUSCH channel <NUM> may be reduced to obtain an available transmit power. In which case, a linear value of the available transmit power of the PUSCH channel <NUM> is P̂PUSCH,<NUM> (i) = P̂CMAX (i) - P̂PUCCH,<NUM> (i), where P̂CMAX (i) is a linear value of maximum transmit power and P̂PUCCH,<NUM> (i) is a linear value of available transmit power (which is equal to a linear value of initial transmit power) of the PUCCH channel <NUM>.

Example <NUM>: To-be-transmitted objects are a PUCCH channel <NUM> that needs to be transmitted on the carrier <NUM>, a PUSCH channel <NUM> that does not carry UCI and need to be transmitted on the carrier <NUM>, and a PUSCH channel <NUM> that does not carry UCI and needs to be transmitted on the carrier <NUM>. Since a priority of a PUCCH channel is higher than a priority of a PUSCH channel, power reduction may be performed on the PUSCH channels. There exist two PUSCH channels, and equal power reduction may be performed on the two PUSCH channels. In which case, available transmit powers of the PUSCH channel <NUM> and the PUSCH channel <NUM> may be obtained: P̂PUSCH,<NUM> (i) = P̂PUSCH,<NUM> (i) = (P̂CMAX (i) = P̂PUCCH,<NUM> (i))/ <NUM>, where P̂CMAX (i) is a linear value of maximum transmit power and P̂PUCCH,<NUM> (i) is a linear value of available transmit power (which is equal to a linear value of initial transmit power) of the PUCCH channel <NUM>.

Example <NUM>: To-be-transmitted objects are a PUCCH channel <NUM> that needs to be transmitted on the carrier <NUM>, and a PUSCH channel <NUM> that carries UCI and needs to be transmitted on the carrier <NUM>, where UCI carried in the PUCCH channel <NUM> is a CQI/PMI, and the UCI carried in the PUSCH channel <NUM> is hybrid automatic repeat request information. First, channels corresponding to transmission objects may be compared according to a priority sequence of types of the transmission objects. Since a priority of a PUCCH channel is equal to a priority of a PUSCH channel carrying UCI, prioritization needs to be further performed on the UCI carried in the PUCCH channel <NUM> and the UCI carried in the PUSCH channel <NUM> according to a priority sequence of UCI carried in the transmission objects. Since a priority of the hybrid automatic repeat request information is higher than a priority of a CQI/PMI, a priority of the PUCCH channel <NUM> is lower than a priority of the PUSCH channel <NUM>, which means that a transmit power of the PUCCH on the carrier <NUM> may be reduced to obtain an available transmit power. In which case, a linear value of the available transmit power of the PUSCH channel <NUM> on the carrier <NUM> is P̂PUCCH,<NUM> (i) = P̂CMAX(i) - P̂PUSCH,<NUM>(i) , where PCMAX (i) is a linear value of maximum transmit power and P̂PUSCH,<NUM> (i) is a linear value of available transmit power (which is equal to a linear value of initial transmit power) of the PUSCH channel <NUM>.

Example <NUM>: To-be-transmitted objects are a PUCCH channel <NUM> that needs to be transmitted on the carrier <NUM>, and a PUCCH channel <NUM> that needs to be transmitted on the carrier <NUM>, where UCI transmitted on the PUCCH channel <NUM> is hybrid automatic repeat request information, and UCI transmitted on the PUCCH channel <NUM> is also hybrid automatic repeat request information; and the carrier <NUM> is a carrier whose duplex mode is FDD, and the carrier <NUM> is a carrier whose duplex mode is TDD. First, channels corresponding to transmission objects may be compared according to a priority sequence of types of the transmission objects. Since the two channels are both PUCCH channels, prioritization needs to be further performed on UCI carried in the PUCCH channel <NUM> and UCI carried in the PUCCH channel <NUM> according to a priority sequence of UCI carried in the transmission objects. Since hybrid automatic repeat request information is carried in both channels, prioritization still needs to be further performed on the carrier <NUM> corresponding to the PUCCH channel <NUM> and the carrier <NUM> corresponding to the PUCCH channel <NUM> according to a priority sequence of carriers corresponding to the transmission objects. The duplex mode of the carrier <NUM> corresponding to the PUCCH channel <NUM> is FDD and the duplex mode of the carrier <NUM> corresponding to the PUCCH channel <NUM> is TDD, and consequently a priority of the carrier <NUM> corresponding to the PUCCH channel <NUM> is higher than a priority of the carrier <NUM> corresponding to the PUCCH channel <NUM>, which means that a priority of the PUCCH channel <NUM> is higher than a priority of the PUCCH channel <NUM>, specifically, a transmit power of the PUCCH on the carrier <NUM> may be reduced to obtain an available transmit power. In which case, a linear value of the available transmit power of the PUCCH channel <NUM> on the carrier <NUM> is P̂PUCCH,<NUM> (i) = P̂CMAX(i) - PPUCCH,<NUM> (i), where P̂CMAX (i) is a linear value of maximum transmit power and P̂PUCCH,<NUM> (i) is a linear value of available transmit power (which is equal to a linear value of initial transmit power) of the PUCCH channel <NUM>.

It should be understood that the foregoing examples are merely specific implementations of this embodiment of the present invention, and this embodiment of the present invention may also be practiced in other manners. For example, in Example <NUM>, comparison may be not performed according to a channel type; instead, carried UCI may be directly compared. Referring again to Example <NUM>, if UCI carried in the PUCCH channel <NUM> is a channel quality indicator/precoding matrix indicator and UCI carried in a PUSCH channel <NUM> is a scheduling request, the priority of the PUCCH channel <NUM> is lower than the priority of the PUSCH channel <NUM>. In which case, power reduction needs to be performed on the transmit power of the PUCCH.

Therefore, according to the power determining method in this embodiment of the present invention, an initial transmit power of each transmission object in a transmission object set is determined, where the transmission object set includes all to-be-transmitted uplink channels and/or SRSs; when a sum of initial transmit powers of all the transmission objects in the transmission object set is greater than a maximum transmit power, a power reduction operation is performed based on a priority sequence of information corresponding to the transmission objects, so as to acquire an available transmit power of each transmission object in the transmission object set, where a sum of available transmit powers of all the transmission objects in the transmission object set is not greater than the maximum transmit power; and each transmission object in the transmission object set is sent according to the respective available transmit power corresponding to each transmission object in the transmission object set, which can solve the problem in which a sum of transmit powers of all to-be-transmitted objects of a user equipment is greater than a maximum transmit power of the user equipment.

The foregoing has described the power determining method from a user equipment side with reference to <FIG>. The following describes the power determining method from a base station side with reference to <FIG>.

<FIG> is a schematic flowchart of a power determining method <NUM> according to an embodiment of the present invention. As shown in <FIG>, the method <NUM> includes:.

Specifically, when a base station needs to perform uplink data scheduling for a user equipment, the base station may determine a first transmission object set for the user equipment, where the first transmission object set includes all uplink channels and/or SRSs to be transmitted by the user equipment, specifically, the first transmission object set not only includes all uplink channels and/or SRSs that need to be fed back to the base station by the user equipment, but also includes all uplink channels and/or SRSs that need to be fed back to another base station by the user equipment. After determining the first transmission object set for the user equipment, the base station may determine an initial transmit power of each transmission object in the first transmission object set. When a sum of initial transmit powers of all the transmission objects in the first transmission object set is greater than a maximum transmit power of the user equipment, the base station may determine a priority of each transmission object in the first transmission object set based on a priority sequence of information corresponding to the transmission objects, and then, may perform a power reduction operation according to the priority of each transmission object, so as to acquire an available transmit power of each transmission object in the first transmission object set, where a sum of available transmit powers of all the transmission objects in the first transmission object set is less than or equal to the maximum transmit power of the user equipment. Then, the base station may determine, according to the available transmit power of each transmission object in the first transmission object set and transmission objects that need to be fed back to the base station, a second transmission object set that needs to be scheduled by the base station, where an available transmit power of a transmission object in the second transmission object set is not <NUM>, and transmission objects in the second transmission object set are transmission objects that need to be scheduled by the base station. The base station may perform scheduling for the user equipment after determining the second transmission object set that needs to be scheduled by the base station.

In this embodiment of the present invention, the base station may determine, according to an actual situation, uplink channels and/or SRSs that need to be transmitted to another base station by the user equipment, for example, determine, according to an upper-layer parameter configuration of the user equipment, time of feeding back periodic channel state information or SRSs to another base station by the user equipment; or the base station may determine, according to a current service condition of the user equipment, scheduling that may be performed by another base station for the user equipment, so as to obtain the first transmission object set for the user equipment, which means that, not only all uplink channels and/or SRSs that need to be fed back to the base station by the user equipment are included, but also all uplink channels and/or SRSs that need to be fed back to another base station by the user equipment are included.

In this embodiment of the present invention, the second transmission object set may be formed from all transmission objects that need to be scheduled by the base station and whose available transmit power is not <NUM>, or may be formed from a part of transmission objects that need to be scheduled by the base station and whose available transmit power is not <NUM>, for example, the second transmission object set may be formed from transmission objects that need to be scheduled by the base station and whose available transmit power is not <NUM> and whose priority is greater than a predetermined threshold, or formed by transmission objects that need to be scheduled by the base station and whose available transmit power is not <NUM> and meets the requirement that a ratio of available transmit power to initial transmit power is greater than a predetermined threshold.

In this embodiment of the present invention, the priority sequence of the types of the transmission objects may include at least one of the following:.

The priority sequence of the UCI of the transmission objects may include at least one of the following:.

In this embodiment of the present invention, the priority sequence of the carriers corresponding to the transmission objects may include at least one of the following:
a priority sequence determined based on index sequence numbers of the carriers, a carrier priority sequence configured by an upper layer, a priority sequence determined based on duplex modes of the carriers, a priority sequence determined based on RRC connection states of the carriers, and a priority sequence determined based on transmission points corresponding to the carriers.

In this embodiment of the present invention, the priority sequence of the carriers corresponding to the transmission objects may include a priority sequence determined based on duplex modes of the carriers, for example, a priority of a carrier whose duplex mode is FDD is lower than a priority of a carrier whose duplex mode is TDD.

In this embodiment of the present invention, the priority sequence of the carriers corresponding to the transmission objects may include: a priority sequence determined based on RRC connection states of carriers, for example, a priority of a carrier supporting RRC connection is higher than a priority of a carrier not supporting RRC connection, or a priority of a carrier carrying RRC information is higher than a priority of a carrier not carrying RRC information. In this embodiment of the present invention, the user equipment may first determine a priority of a transmission object according to the priority sequence determined based on the RRC connection states. For example, if a carrier <NUM> is a carrier supporting RRC connection and a carrier <NUM> is a carrier not supporting RRC connection, a priority of the carrier <NUM> is higher than a priority of the carrier <NUM>, regardless of types of transmission objects corresponding to the carrier <NUM> and the carrier <NUM>, or regardless of UCI carried in transmission objects corresponding to the carrier <NUM> and the carrier <NUM>. When there are still same-priority transmission objects after the priorities of the transmission objects are determined according to the priority sequence determined based on the RRC connection states, the priorities of the transmission objects may be further determined according to priorities of corresponding types of the transmission objects and/or priorities of the UCI carried in the transmission objects.

In this embodiment of the present invention, the performing a power reduction operation based on a priority sequence of information corresponding to the transmission objects in S220 includes:.

In this embodiment of the present invention, the determining a priority of each transmission object in the first transmission object set according to the priority sequence of the information corresponding to the transmission objects and corresponding information of each transmission object in the first transmission object set includes:.

In this embodiment of the present invention, the performing the power reduction operation according to the priority of each transmission object in the first transmission object set includes:
performing the power reduction operation for the transmission objects in the first transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, until a sum of acquired available transmit powers of all the transmission objects in the first transmission object set is less than or equal to the maximum transmit power.

In this embodiment of the present invention, when performing the power reduction for the transmission objects in the first transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, it is satisfied that if an available transmit power of a transmission object with a priority of n is not <NUM>, an available transmit power of a transmission object with a priority of n+<NUM> is equal to an initial transmit power of the transmission object with the priority of n+1i, where m is the number of transmission objects in the first transmission object set, m ≥ n ≥ <NUM>, and a transmission object with a priority of <NUM> has a lowest priority.

In this embodiment of the present invention, the performing the power reduction operation for the transmission objects in the first transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, includes:
when multiple transmission objects have a same priority, performing equal power reduction for the multiple transmission objects that have the same priority.

It should be understood that, for details about how the base station determines the priority of the first transmission object set of the user equipment based on the priority sequence of the information corresponding to the transmission objects and performs a power reduction operation, refer to the power determining method <NUM>, and for brevity, details are not repeatedly described herein.

In this embodiment of the present invention, after determining the second transmission object set that needs to be scheduled, the base station may determine, according to the priority of each transmission object in the second transmission object set, a resource and a modulation and coding scheme for scheduling each transmission object in the second transmission object set. For example, a transmission object with a higher priority uses more resources and a higher modulation and coding scheme. Apparently, the resource and the modulation and coding scheme for scheduling each transmission object in the second transmission object set may also be determined in another manner. For example, an available transmit power of each transmission object in the second transmission object set may be determined, and then the resource and the modulation and coding scheme for scheduling each transmission object may be determined according to the available transmit power of each transmission object.

Therefore, according to the power determining method in this embodiment of the present invention, a first transmission object set is determined, where the first transmission object set includes all to-be-transmitted uplink channels and/or SRSs of a user equipment; when it is determined that a sum of transmit powers of all transmission objects in the first transmission object set is greater than a maximum transmit power of the user equipment, a power reduction operation is performed based on a priority sequence of information corresponding to the transmission objects, so as to acquire an available transmit power of each transmission object in the first transmission object set, where a sum of available transmit powers of all the transmission objects in the first transmission object set is less than or equal to the maximum transmit power of the user equipment; a second transmission object set that needs to be scheduled is determined according to the available transmit power of each transmission object in the first transmission object set, where the available transmit power of each transmission object in the second transmission object set is not <NUM>; and then scheduling is performed for the user equipment according to the second transmission object set, which can solve the problem in which a sum of transmit powers of to-be-transmitted objects of the user equipment is greater than a maximum transmit power of the user equipment.

<FIG> is a schematic block diagram of a user equipment <NUM> according to an embodiment of the present invention. As shown in <FIG>, the user equipment <NUM> includes:.

Optionally, the acquiring unit <NUM> is specifically configured to:
acquire the priority sequence of the information corresponding to the transmission objects, where the priority sequence of the information corresponding to the transmission objects includes at least one of the following: a priority sequence of types of the transmission objects, a priority sequence of UCI carried in the transmission objects, and a priority sequence of carriers corresponding to the transmission objects.

Optionally, the acquiring unit <NUM> is specifically configured to acquire the priority sequence of the types of the transmission objects, where the priority sequence of the types of the transmission objects includes at least one of the following:.

Optionally, the acquiring unit <NUM> is specifically configured to acquire the priority sequence of the UCI carried in the transmission objects, where the priority sequence of the UCI carried in the transmission objects includes at least one of the following:.

Optionally, the acquiring unit <NUM> is specifically configured to acquire the priority sequence of the carriers corresponding to the transmission objects, where the priority sequence of the carriers corresponding to the transmission objects includes at least one of the following:
a priority sequence determined based on index sequence numbers of the carriers, a carrier priority sequence configured by an upper layer, a priority sequence determined based on duplex modes of the carriers, a priority sequence determined based on RRC connection states of the carriers, and a priority sequence determined based on transmission points corresponding to the carriers.

Optionally, the acquiring unit <NUM> is specifically configured to acquire the priority sequence determined based on the RRC connection states of the carriers, where the priority sequence determined based on the RRC connection states of the carriers includes at least one of the following:
a priority of a carrier supporting RRC connection is higher than a priority of a carrier not supporting RRC connection; and a priority of a carrier carrying RRC information is higher than a priority of a carrier not carrying RRC information.

Optionally, the acquiring unit <NUM> is specifically configured to acquire the priority sequence determined based on the duplex modes of the carriers, where the priority sequence determined based on the duplex modes of the carriers includes that: a priority of a carrier whose duplex mode is frequency division duplex FDD is less than a priority of a carrier whose duplex mode is time division TDD.

Optionally, the acquiring unit <NUM> is specifically configured to acquire the priority sequence of the information corresponding to the transmission objects, where the priority sequence of the information corresponding to the transmission objects includes at least one of the following:.

Optionally, as shown in <FIG>, the power reducing unit <NUM> includes:.

Optionally, the determining subunit <NUM> is specifically configured to:.

Optionally, the power reducing subunit <NUM> is specifically configured to:
perform the power reduction operation for the transmission objects in the transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, until a sum of acquired available transmit powers of all the transmission objects in the transmission object set is less than or equal to the maximum transmit power.

Optionally, the power reducing subunit <NUM> is specifically configured to:
perform the power reduction operation for the transmission objects in the transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, until a sum of acquired available transmit powers of all the transmission objects in the transmission object set is less than or equal to the maximum transmit power, where when performing the power reduction for the transmission objects in the transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, it is satisfied that if an available transmit power of a transmission object with a priority of n is not <NUM>, an available transmit power of a transmission object with a priority of n+<NUM> is equal to an initial transmit power of the transmission object with the priority of n+<NUM>, where m is the number of transmission objects in the transmission object set, m ≥ n ≥ <NUM>, and a transmission object with a priority of <NUM> has a lowest priority.

Optionally, the power reducing subunit <NUM> is specifically configured to:
when multiple transmission objects have a same priority, perform equal power reduction for the multiple transmission objects that have the same priority.

Therefore, the user equipment in this embodiment of the present invention determines an initial transmit power of each transmission object in a transmission object set, where the transmission object set includes all to-be-transmitted uplink channels and/or SRSs; when a sum of initial transmit powers of all the transmission objects in the transmission object set is greater than a maximum transmit power, performs a power reduction operation based on a priority sequence of information corresponding to the transmission objects, so as to acquire an available transmit power of each transmission object in the transmission object set, where a sum of available transmit powers of all the transmission objects in the transmission object set is not greater than the maximum transmit power; and sends each transmission object in the transmission object set according to the available transmit power corresponding to each transmission object in the transmission object set, which can solve the problem in which a sum of transmit powers of to-be-transmitted objects of a user equipment is greater than a maximum transmit power of the user equipment.

<FIG> is a schematic block diagram of a base station <NUM> according to an embodiment of the present invention. As shown in <FIG>, the base station <NUM> includes:.

Optionally, the acquiring unit <NUM> is specifically configured to:
acquire the priority sequence of the information corresponding to the transmission objects, where the priority sequence of the information corresponding to the transmission objects includes at least one of the following: a priority sequence of types of the transmission objects, a priority sequence of uplink control information UCI carried in the transmission objects, and a priority sequence of carriers corresponding to the transmission objects.

Optionally, the power reducing unit <NUM> includes:.

Optionally, the power reducing subunit <NUM> is specifically configured to:
perform the power reduction operation for the transmission objects in the first transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, until a sum of acquired available transmit powers of all the transmission objects in the first transmission object set is less than or equal to the maximum transmit power.

Optionally, the power reducing subunit <NUM> is specifically configured to:
perform the power reduction operation for the transmission objects in the first transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, until a sum of acquired available transmit powers of all the transmission objects in the first transmission object set is less than or equal to the maximum transmit power, where when performing the power reduction for the transmission objects in the first transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, it is satisfied that if an available transmit power of a transmission object with a priority of n is not <NUM>, an available transmit power of a transmission object with a priority of n+<NUM> is equal to an initial transmit power of the transmission object with the priority of n+<NUM>, where m is the number of transmission objects in the first transmission object set, m ≥ n ≥ <NUM>, and a transmission object with a priority of <NUM> has a lowest priority.

Therefore, the base station in this embodiment of the present invention determines a first transmission object set, where the first transmission object set includes all to-be-transmitted uplink channels and/or SRSs of a user equipment; when it is determined that a sum of transmit powers of all transmission objects in the first transmission object set is greater than a maximum transmit power of the user equipment, performs a power reduction operation based on a priority sequence of information corresponding to the transmission objects, so as to acquire an available transmit power of each transmission object in the first transmission object set, where a sum of available transmit powers of all the transmission objects in the first transmission object set is less than or equal to the maximum transmit power of the user equipment; determines, according to the available transmit power of each transmission object in the first transmission object set, a second transmission object set that needs to be scheduled, where the available transmit power of each transmission object in the second transmission object set is not <NUM>; and then performs scheduling for the user equipment according to the second transmission object set, which can solve the problem in which a sum of transmit powers of to-be-transmitted objects of a user equipment is greater than a maximum transmit power of the user equipment.

Optionally, the processor <NUM> is specifically configured to:
acquire the priority sequence of the information corresponding to the transmission objects, where the priority sequence of the information corresponding to the transmission objects includes at least one of the following: a priority sequence of types of the transmission objects, a priority sequence of UCI carried in the transmission objects, and a priority sequence of carriers corresponding to the transmission objects.

Optionally, the processor <NUM> is specifically configured to acquire the priority sequence of the types of the transmission objects, where the priority sequence of the types of the transmission objects includes at least one of the following:.

Optionally, the processor <NUM> is specifically configured to:
acquire the priority sequence of the UCI carried in the transmission objects, where the priority sequence of the UCI carried in the transmission objects includes at least one of the following:.

Optionally, the processor <NUM> is specifically configured to:
acquire the priority sequence of the carriers corresponding to the transmission objects, where the priority sequence of the carriers corresponding to the transmission objects includes at least one of the following: a priority sequence determined based on index sequence numbers of the carriers, a carrier priority sequence configured by an upper layer, a priority sequence determined based on duplex modes of the carriers, a priority sequence determined based on RRC connection states of the carriers, and a priority sequence determined based on transmission points corresponding to the carriers.

Optionally, the processor <NUM> is specifically configured to acquire the priority sequence determined based on the RRC connection states of the carriers, where the priority sequence determined based on the RRC connection states of the carriers includes at least one of the following:.

Optionally, the processor <NUM> is specifically configured to acquire the priority sequence determined based on the duplex modes of the carriers, where the priority sequence determined based on the duplex modes of the carriers includes that:
a priority of a carrier whose duplex mode is frequency division duplex FDD is lower than a priority of a carrier whose duplex mode is time division TDD.

Optionally, the processor <NUM> is specifically configured to acquire the priority sequence of the information corresponding to the transmission objects, where the priority sequence of the information corresponding to the transmission objects includes at least one of the following:.

Optionally, the processor <NUM> is specifically configured to:
determine a priority of each transmission object in the transmission object set according to the priority sequence of the information corresponding to the transmission objects and corresponding information of each transmission object in the transmission object set, and perform the power reduction operation according to the priority of each transmission object in the transmission object set.

Optionally, the processor <NUM> is specifically configured to:
perform the power reduction operation for the transmission objects in the transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, until a sum of acquired available transmit powers of all the transmission objects in the transmission object set is less than or equal to the maximum transmit power.

Optionally, the processor <NUM> is specifically configured to:
perform the power reduction operation for the transmission objects in the transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, until a sum of acquired available transmit powers of all the transmission objects in the transmission object set is less than or equal to the maximum transmit power, where when performing the power reduction for the transmission objects in the transmission object set one by one according to the priorities of the transmission objects, with a transmission object of a lowest priority being the first to undergo the power reduction, it is satisfied that if an available transmit power of a transmission object with a priority of n is not <NUM>, an available transmit power of a transmission object with a priority of n+<NUM> is equal to an initial transmit power of the transmission object with the priority of n+<NUM>, where m is the number of transmission objects in the transmission object set, m ≥ n ≥ <NUM>, and a transmission object with a priority of <NUM> has a lowest priority.

Optionally, the processor <NUM> is specifically configured to:
when multiple transmission objects have a same priority, perform equal power reduction for the multiple transmission objects that have the same priority.

Optionally, the processor <NUM> is specifically configured to: acquire the priority sequence of the information corresponding to the transmission objects, where the priority sequence of the information corresponding to the transmission objects includes at least one of the following: a priority sequence of types of the transmission objects, a priority sequence of uplink control information UCI carried in the transmission objects, and a priority sequence of carriers corresponding to the transmission objects.

Optionally, the processor <NUM> is specifically configured to: perform the power reduction operation for the transmission objects in the first transmission object set one by one according to the priorities of the transmission object, with a transmission object of a lowest priority being the first to undergo the power reduction, until a sum of acquired available transmit powers of all the transmission objects in the first transmission object set is less than or equal to the maximum transmit power.

Optionally, the processor <NUM> is specifically configured to:
perform the power reduction operation for the transmission objects in the first transmission object set one by one according to the priorities of the transmission object, with a transmission object of a lowest priority being the first to undergo the power reduction, until a sum of acquired available transmit powers of all the transmission objects in the first transmission object set is less than or equal to the maximum transmit power, where when performing the power reduction for the transmission objects in the first transmission object set one by one according to the priorities of the transmission object, with a transmission object of a lowest priority being the first to undergo the power reduction, it is satisfied that if an available transmit power of a transmission object with a priority of n is not <NUM>, an available transmit power of a transmission object with a priority of n+<NUM> is equal to an initial transmit power of the transmission object with the priority of n+<NUM>, where m is the number of transmission objects in the first transmission object set, m ≥ n ≥ <NUM>, and a transmission object with a priority of <NUM> has a lowest priority.

It should be understood that in appropriate situations, features in the method embodiments of the present invention are applicable to the device embodiments of the present invention in proper cases, and vice versa.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the described apparatus embodiment is merely exemplary. For example, the unit division is merely logical function division and may be other division in an actual implementation. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections may be implemented through some interfaces.

A part or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

Claim 1:
A power determining method, comprising:
determining an initial transmit power of each transmission object in a transmission object set (S110), wherein the transmission object set comprises all to-be-transmitted uplink channels and/or sounding reference signals, SRSs;
when a sum of initial transmit powers of all the transmission objects in the transmission object set is greater than a maximum transmit power, performing a power reduction operation based on a priority sequence of uplink control information, UCI, carried in a transmission object (S120), so as to acquire an available transmit power of each transmission object in the transmission object set, wherein a sum of the available transmit powers of all the transmission objects in the transmission object set is not greater than the maximum transmit power;
wherein the priority sequence of UCI carried in a transmission object comprises the following: when channel state information, hybrid automatic repeat request information and a scheduling request exist, a priority of the channel state information is lower than a priority of the scheduling request, and a priority of the hybrid automatic repeat request information is equal to the priority of the scheduling request; and
sending each transmission object in the transmission object set according to the available transmit power corresponding to each transmission object in the transmission object set (S130).