CN111757481A

CN111757481A - Power control method, device, equipment and storage medium

Info

Publication number: CN111757481A
Application number: CN201910249281.7A
Authority: CN
Inventors: 金婧; 刘光毅; 李岩; 王飞; 王启星
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-10-09
Anticipated expiration: 2039-03-29
Also published as: CN111757481B

Abstract

The embodiment of the application discloses a power control method, a device, equipment and a storage medium, wherein the method comprises the following steps: the UE performs unequal ratio distribution on the transmission power of signals among antenna ports of the UE. The sending power of the signals is distributed among the antenna ports of the UE in an unequal ratio, so that the sending power of the signals is distributed to the corresponding antenna ports according to different ratios, thereby not only optimizing the uplink transmission performance, but also reducing the time delay of uplink transmission.

Description

Power control method, device, equipment and storage medium

Technical Field

The embodiments of the present application relate to electronic communication technologies, and relate to, but are not limited to, a method, an apparatus, a device, and a storage medium for power control.

Background

In the related art, the power level of a User Equipment (UE) is divided according to the total maximum transmission power, and is not defined for each antenna port or each transmission channel. If the UE has two antenna ports, it can be implemented by two transmission channels with the maximum achievable transmit power of 20dBm, and if the UE has four antenna ports, it can be implemented by four transmission channels with the maximum achievable transmit power of 17dBm, respectively; the maximum transmit power that can be achieved for UE power class 2 is 26 dBm.

Currently, a switching function is added between an antenna port and a transmission channel to switch to a corresponding power level.

Disclosure of Invention

In view of this, embodiments of the present application provide a power control method, apparatus, device and storage medium to solve at least one problem existing in the prior art, so as to solve the problem that the delay of uplink transmission is increased by adding a switching function between an antenna port and a transmission channel.

The technical scheme of the embodiment of the application is realized as follows:

in a first aspect, an embodiment of the present application provides a power control method, where the method includes: the UE performs unequal ratio distribution on the transmission power of signals among antenna ports of the UE.

In a second aspect, an embodiment of the present application provides a power control apparatus, including: and an allocation unit, configured to allocate the transmission power of the signal unequally among the antenna ports of the UE.

In a third aspect, an embodiment of the present application provides a user equipment, where the user equipment at least includes: a processor and a memory configured to store executable instructions, wherein: the processor is configured to execute stored executable instructions configured to perform the methods described in the above embodiments.

In a fourth aspect, the present application provides a computer storage medium storing a computer program, which when executed by at least one processor implements the method in the above embodiments.

According to the power control method, the device, the equipment and the storage medium provided by the embodiment of the application, the sending power of the signal is distributed among the antenna ports of the UE in an unequal ratio, so that the sending power of the signal is distributed to the corresponding antenna ports according to different ratios, the uplink transmission performance can be optimized, and the time delay of uplink transmission can be reduced.

Drawings

Fig. 1A is a first schematic diagram of an implementation architecture of a UE in the related art;

FIG. 1B is a diagram illustrating a UE implementation architecture in the related art;

fig. 1C is a schematic diagram illustrating a UE implementation architecture in the related art;

fig. 2 is a schematic flow chart illustrating an implementation of a power control method in the related art;

fig. 3 is a fourth schematic diagram of an implementation architecture of a UE in the related art;

fig. 4 is a first schematic flow chart illustrating an implementation flow of a power control method according to an embodiment of the present application;

fig. 5 is a schematic flow chart illustrating an implementation flow of a power control method according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a power control apparatus according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram of a specific hardware structure of a user equipment according to an embodiment of the present invention.

Detailed Description

Currently, in the second-stage standard R16 of the fifth-Generation mobile communication technology (5G), UEs of different architectures are made clear for the case of uplink full power transmission. Taking a UE with two antenna ports as an example, the UE may have three different implementation architectures, as shown in fig. 1A to 1C, where fig. 1A shows an implementation architecture of a first UE, in the architecture, each antenna port has a corresponding transmission channel, that is, a transmission channel 1 and a transmission channel 2, where both transmission powers of the transmission channel 1 and the transmission channel 2 can reach 23 dBm; fig. 1B shows a second UE implementation architecture, in which two antenna ports have corresponding transmit channels, i.e. transmit channel 1 and transmit channel 2, respectively, where the transmit power of both transmit channel 1 and transmit channel 2 can reach 20 dBm; fig. 1C shows an implementation architecture of a third UE, in which two antenna ports have corresponding transmit channels, i.e., a transmit channel 1 and a transmit channel 2, respectively, where the transmit power of the transmit channel 1 may reach 23dBm and the transmit power of the transmit channel 2 may reach 20 dBm.

Table 1 shows a coding scheme of a Transmitted Precoding Matrix Indicator (TPMI) in the related art, and as shown in table 1, a Precoding matrix corresponding to TPMI 0 is

TPMI 1 corresponds to a precoding matrix of

The precoding matrix corresponding to TPMI 2 is

The precoding matrix corresponding to TPMI3 is

TPMI 4 corresponds to a precoding matrix of

TPMI 5 corresponds to a precoding matrix of

TABLE 1 coding schematic of TPMI

Taking the implementation architecture of the third UE in the foregoing embodiment as an example, when a Codebook (Codebook based) based uplink transmission single-stream signal is used, if precoding is performed by using a precoding matrix corresponding to TPMI 0, power can be set for an antenna port corresponding to a transmission channel 1, power is not set for an antenna port corresponding to a transmission channel 2, and the UE may transmit a signal with power of 23dBm through the antenna port corresponding to the transmission channel 1; if precoding is performed by using the precoding matrix corresponding to TPMI 1, power is not set to the antenna port corresponding to the transmission channel 1, power is set to the antenna port corresponding to the transmission channel 2, and the UE may transmit a signal with power of 20dBm through the antenna port corresponding to the transmission channel 2.

Fig. 2 is a schematic diagram illustrating an implementation flow of a power control method in the related art, and as shown in fig. 2, for an implementation architecture of a third UE in the foregoing embodiment, if configured for uplink codebook (codebook) transmission, the method mainly includes the following steps:

step 201, the 5G base station (gsnodeb, gNB) sends a Radio Resource Control (RRC) signaling to the UE, and the UE performs codebook transmission with the gNB according to configuration information in the RRC signaling.

Here, the codebook refers to a set of a limited number of precoding matrices, and in precoding based on the codebook, available precoding matrices are selected from the codebook. In the embodiment of the application, a codebook can be formed by a plurality of precoding matrices, the content of the codebook is known by both the gNB and the UE, and based on a preset codebook, the UE can select a precoding matrix matched with the current channel condition from the codebook according to a certain optimization criterion and feed back the precoding matrix to the gNB through a feedback link. And the gNB takes the precoding matrix label reported by the UE as a reference in the downlink transmission process to precode the downlink data. Because the precoding matrix used by the gNB in the downlink may not be consistent with that reported by the UE, the gNB explicitly indicates the precoding matrix to be used by the UE in the downlink control signaling in order to ensure that the UE can acquire the precoded equivalent channel and perform coherent demodulation on downlink data.

Here, the RRC is used to process third layer information of a control plane between the UE and the gNB. The first layer is a physical layer, the second layer is a medium access control layer, and the RRC layer is a third layer. The RRC layer allocates Radio resources and sends related signaling, and a main part of control signaling transmitted between the UE and a Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN) is RRC message, where the RRC message carries all parameters required for establishing, modifying, and the like operations of a medium Access control layer and a physical layer protocol entity, and also carries some signaling of a Non-Access Stratum (NAS), such as Mobility Management (MM), Connection Management (CM), and the like.

In step 202, the gNB configures Sounding Reference Signal (SRS) resources for antennas on the UE.

Here, if the UE is provided with two antenna ports, SRS resources may be respectively configured for each antenna port. The SRS resource is a resource for transmitting the SRS, and the SRS resource includes at least one of a frequency domain resource, a time domain resource, or a spatial domain resource, where the spatial domain resource is a resource required for signal transmission in a space division multiplexing manner, and the SRS can be used for estimating uplink channel frequency domain information and performing frequency selective scheduling; and the method can also be used for estimating an uplink channel and carrying out downlink beam forming.

The method comprises the following steps that the SRS resource configuration comprises two parts, namely, a public configuration SRS resource and a special configuration SRS resource, wherein the public configuration SRS resource is also called as a cell specific SRS (sounding SRS) resource and is issued in a system message; the dedicated configured SRS resource is also called UE specific SRS (UE specific SRS) resource, and the configuration is completed through RRC connection.

In step 203, the UE transmits the SRS according to the SRS resource configured by the gNB.

Here, the SRS is transmitted after the transmission power of the signal is equally distributed to each antenna port. The transmission power of a signal refers to the power required to transmit the signal.

In step 204, the gNB determines parameters such as Rank Indication (RI), Modulation and Coding Scheme (MCS), and TPMI for uplink transmission of the UE based on the measurement result reported by the UE through the SRS.

At this time, since the precoding matrices in the selected codebooks are different and the difference between the Signal to Interference plus Noise ratios (SINRs) of the two antenna ports is 3dB, since the coverage range of the maximum transmission power that can be achieved by the transmission channel corresponding to the antenna port selected according to TPMI 1 is smaller than TPMI 0, if TPMI 1 is selected, the uplink coverage rate is affected, and when the UE is located at the edge of the cell, the corresponding antenna port can be selected according to TPMI 0 to increase the uplink performance.

However, in the first-stage standard R15 of 5G, the transmission power of a signal is equally allocated according to the number of antenna ports on the UE, where the UE equally allocates linear values of the transmission power of a signal on each antenna port, the linear values of the transmission power of the signal being determined according to the transmission power of a signal on the active Uplink Bandwidth Part (UL BWP) of the carrier of the serving cell. Since the gNB side cannot obtain the difference of the maximum transmission power that can be achieved by the transmission channel corresponding to each antenna port when performing channel estimation, it is not possible to select a better antenna according to the SINR caused by the difference of the transmission power.

In addition, a switching function is added between an antenna port and a transmission channel to switch to a corresponding power level, which is mainly realized by depending on the UE, and because a certain time is required for switching and it needs to be ensured that a time interval for scheduling uplink transmission at the gbb side is greater than the switching time, a certain time delay is brought to uplink transmission. As shown in fig. 3, the UE is provided with two antenna ports, which are a first antenna port 301 and a second antenna port 302, respectively, where the first antenna port 301 corresponds to a transmit channel 1, and the second antenna port 302 corresponds to a transmit channel 2, where the transmit power of the transmit channel 1 can reach 23dBm, and the transmit power of the transmit channel 2 can reach 20dBm, if the transmit power of the signal is 23dBm, and the transmit power of the signal is distributed to the second antenna port 302, since the maximum transmit power that the transmit channel 2 can reach is 20dBm, it is necessary to switch from the transmit channel 2 to the transmit channel 1, and the transmit channel 1 is used for processing, which is implemented in the UE and may bring a time delay to uplink transmission.

In the related art, a switching function is added between an antenna port and a transmission channel to switch to a corresponding power level mainly depending on UE, and a certain time delay is brought to uplink transmission due to the fact that a certain time is required for switching and the fact that the time interval for scheduling uplink transmission at a gNB side is required to be longer than the switching time is ensured; and the gNB side cannot acquire the difference of the maximum transmission power which can be achieved by the transmission channels corresponding to the two antenna ports during channel estimation, and cannot select a better antenna according to the SINR caused by the difference of the maximum transmission power which can be achieved by the transmission channels.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

An embodiment of the present application provides a power control method, and fig. 4 is a first schematic flow chart illustrating an implementation process of the power control method provided in the embodiment of the present application, as shown in fig. 4, the method mainly includes the following steps:

step 401, the UE performs unequal ratio distribution of the transmission power of the signal between the antenna ports of the UE.

Here, each antenna port may establish a connection with a corresponding transmission channel to implement transmission of a signal, and each antenna port corresponds to at least one transmission channel. When the maximum transmit powers that can be achieved by the respective transmit channels are completely the same, the transmit power of the signal may be proportionally allocated to the antenna ports of the UE according to the channel quality, or the transmit power of the signal may be averagely allocated to the antenna ports of the UE. There are two expressions for the transmission power: one is logarithmic, in dBm; the other is a linear value, in watts (W). The proportion mentioned in the embodiment of the present application in performing unequal ratio distribution is determined according to the linear value of the transmission power, for example, the linear value of the power corresponding to 23dBm is 200 milliwatts (mW), the linear value of the power corresponding to 20dBm is 100mW, and 23dBm is twice 20 dBm.

It should be noted that the signal is an SRS; correspondingly, the antenna port is an SRS antenna port.

It should be noted that, the unequal ratio allocation of the transmission power of the signal between the antenna ports of the UE by the UE includes: comparing the sending power of the signal with a set threshold value to obtain a comparison result; and if the comparison result represents that the transmission power is greater than a set threshold value, the UE performs unequal ratio distribution on the transmission power of the signals among the antenna ports of the UE.

It should be noted that the set threshold may be set according to the maximum transmission power of the UE, where the maximum transmission power of the UE is set according to the requirement of the UE, and may be set to 23dBm or 20dBm, for example. In this embodiment, the corresponding transmission channels may be configured according to the maximum transmission power of the UE, so that the total of the maximum transmission powers that can be achieved by each transmission channel can achieve the maximum transmission power of the UE, and the maximum transmission power that can be achieved by each transmission channel does not exceed the maximum transmission power of the UE, and assuming that the maximum transmission power of the UE is 23dBm, two transmission channels in which the maximum transmission powers that can be achieved are respectively 20dBm or two transmission channels in which the maximum transmission powers that can be achieved are respectively 23dBm may be set.

Here, the transmission power of the signal is P_SRSMaximum transmission power of UE is P_cMaxSetting a threshold value to P_cMaxFor example,/2, P can be_SRSAnd P_cMaxThe comparison is carried out to obtain a comparison result; if the comparison result indicates P_SRS>P_cMaxAnd/2, the UE carries out unequal ratio distribution on the transmission power of the signals among the antenna ports of the UE.

It should be noted that, the unequal ratio allocation of the transmission power of the signal between the antenna ports of the UE by the UE includes: and the UE allocates the transmission power of the signal to the antenna ports of the UE in proportion according to the maximum transmission power of each antenna port.

It should be noted that the transmission power allocated to each antenna port is proportional to the maximum transmission power of each antenna port.

It should be noted that, the allocating, by the UE, the transmission power of the signal to the antenna port of the UE according to the maximum transmission power of each antenna port in proportion includes: sequencing the maximum transmitting power of each antenna port to obtain a sequencing result; and distributing the sending power of the signal to the antenna ports of the UE in proportion according to the sequencing result.

Here, the transmission power of the signal is P_SRSMaximum transmission power of UE is P_cMaxSetting a threshold value to P_cMaxFor example,/2, P can be_SRSAnd P_cMaxThe comparison is carried out to obtain a comparison result; if the comparison result indicates P_SRS>P_cMax2, sequencing the maximum transmitting power of each antenna port to obtain a sequencing result; and distributing the sending power of the signal to the antenna ports of the UE in proportion according to the sequencing result.

Here, the maximum transmission power of each antenna port on the UE may be sorted sequentially from small to large, the allocation ratio of the transmission power of the allocation signal may be set, and then the transmission power of the signal may be allocated to the antenna ports on the UE according to the set allocation ratio according to the sorting result. For example, 30% of the transmission power of the signal is allocated to the antenna port whose maximum achievable transmission power is the largest, and 20% of the transmission power of the signal is allocated to the antenna port whose maximum achievable transmission power is the second largest.

It should be noted that, the allocating, by the UE, the transmission power of the signal to the antenna port of the UE according to the maximum transmission power of each antenna port in proportion includes: obtaining the maximum transmitting power sum of the antenna ports according to the maximum transmitting power of each antenna port of the UE; respectively determining the ratio of the maximum transmitting power of each antenna port to the sum of the maximum transmitting powers; sorting the ratio corresponding to each antenna port to obtain a sorting result; and distributing the sending power of the signal to the antenna ports of the UE in proportion according to the sequencing result. The sum of the maximum transmission power of the antenna ports is the sum of the maximum transmission power of each antenna port.

Here, the maximum transmit powers that can be achieved by the antenna ports on the UE may be added to obtain a maximum transmit power sum of the antenna ports, the maximum transmit powers that can be achieved by the antenna ports are divided by the maximum transmit power sum, respectively, to obtain ratios corresponding to the antenna ports, the ratios corresponding to the antenna ports are sequentially sorted from small to large, and then the transmit powers of the signals are proportionally allocated to the antenna ports on the UE according to the sorting result. For example, if the ratio corresponding to antenna port 1 is twice the ratio corresponding to antenna port 2, the transmission power of the signal allocated to antenna port 1 should be twice the transmission power allocated to antenna port 2.

It should be noted that, the unequal ratio allocation of the transmission power of the signal between the antenna ports of the UE by the UE includes: and the UE distributes the transmission power of the signal to the antenna port of the UE in proportion according to the maximum output power of each transmission channel.

It should be noted that the transmission power allocated to each antenna port is proportional to the maximum output power of the transmission channel.

It should be noted that, the allocating, by the UE, the transmission power of the signal to the antenna port of the UE according to the maximum output power of each transmission channel in proportion includes: sequencing the maximum output power of each sending channel to obtain a sequencing result; and distributing the sending power of the signal to the antenna ports of the UE in proportion according to the sequencing result.

Here, the transmission power of the signal is P_SRSMaximum transmission power of UE is P_cMaxSetting a threshold value to P_cMaxFor example,/2, P can be_SRSAnd P_cMaxThe comparison is carried out to obtain a comparison result; if the comparison result indicates P_SRS>P_cMax/2 toSequencing the maximum output power of each sending channel to obtain a sequencing result; and distributing the sending power of the signal to the antenna ports of the UE in proportion according to the sequencing result.

Here, the maximum transmission power that can be achieved by each transmission channel on the UE may be sorted sequentially from small to large, the allocation ratio for allocating the transmission power of the signal may be set, and then the transmission power of the signal may be allocated to the antenna ports on the UE according to the set allocation ratio according to the sorting result. For example, 30% of the transmission power of the signal is allocated to the antenna port corresponding to the transmission channel having the maximum achievable transmission power, and 20% of the transmission power of the signal is allocated to the antenna port corresponding to the transmission channel having the second largest achievable transmission power.

It should be noted that, the allocating, by the UE, the transmission power of the signal to the antenna port of the UE according to the maximum output power of each transmission channel in proportion includes: obtaining the maximum output power sum of the sending channels according to the maximum output power of each sending channel; respectively determining the ratio of the maximum output power of each transmitting channel to the sum of the maximum output powers; sorting the ratio corresponding to each sending channel to obtain a sorting result; and distributing the sending power of the signal to the antenna ports of the UE in proportion according to the sequencing result. The sum of the maximum output powers of the transmission channels is the sum of the maximum output powers of the transmission channels.

Here, the maximum output power sum of the transmission channels may be obtained for the maximum output power that can be achieved by each transmission channel on the UE, the maximum output power that can be achieved by each transmission channel is divided by the maximum output power sum, respectively, to obtain the ratio corresponding to each transmission channel, the ratios corresponding to each transmission channel are sequentially sorted from small to large, and then the transmission power of the signal is proportionally allocated to the antenna ports on the UE according to the sorting result. For example, if the ratio corresponding to the transmission channel 1 is twice the ratio corresponding to the transmission channel 2, the transmission power of the signal allocated to the antenna port corresponding to the transmission channel 1 should be twice the transmission power allocated to the antenna port corresponding to the transmission channel 2.

It should be noted that the method further includes: and if the comparison result represents that the sending power of the signal is less than or equal to a set threshold value, averagely distributing the sending power of the signal to each antenna port according to the number of the antenna ports on the UE.

Here, the transmission power of the signal is P_SRSMaximum transmission power of UE is P_cMaxSetting a threshold value to P_cMaxFor example,/2, P can be_SRSAnd P_cMaxThe comparison is carried out to obtain a comparison result; if the comparison result indicates P_SRS≤P_cMax2, P is divided according to the number of antenna ports on UE_SRSThe respective antenna ports on the UE are equally allocated.

It should be noted that the method further includes: determining the channel quality of each antenna port according to the power and the channel state distributed on each antenna port; and determining a corresponding antenna port according to a preset coding matrix determined from a set codebook so as to enable the UE to perform uplink data transmission through the antenna port.

Here, the channel quality is positively correlated with SINR, which is determined according to power allocated to each antenna port and a channel state, wherein the channel state may include parameters such as a period for transmitting data and signals through the channel, a type of data to be transmitted, and the like.

The embodiment of the application also provides a power control method, wherein the gNB side can measure the capability difference of the sending power of each sending channel according to the maximum sending power which can be reached by the sending channel corresponding to each antenna port in the UE, and selects an optimal precoding matrix for the UE from a codebook according to the capability difference of the sending power of each sending channel, for example, when the UE is positioned at the edge of a cell, the antenna port corresponding to the sending channel with the maximum reaching sending power larger than that of the sending channel is selected to send a signal, so that the uplink transmission performance can be optimized; compared with a scheme of adding a switching function between an antenna port and a sending channel, the method can reduce the time delay of uplink transmission.

In the embodiment of the present application, since the transmission power of each antenna port in the UE may be different, the transmission power of the signal is proportionally allocated according to the maximum transmission power that can be achieved by the transmission channel corresponding to each antenna port. For the implementation architecture of the third UE in the foregoing embodiment, configured to transmit an uplink codebook, fig. 5 is a schematic diagram of an implementation flow of a power control method provided in this embodiment, and as shown in fig. 5, the method mainly includes the following steps:

step 501, the gNB sends the RRC signaling to the UE, and the UE performs codebook transmission with the gNB according to the configuration information in the RRC signaling.

Here, the gNB sends the RRC signaling to the UE, and if the UE receives the RRC signaling sent by the gNB, the UE parses corresponding configuration information from the RRC signaling, and performs codebook transmission with the gNB according to the configuration information.

Step 502, the gNB configures SRS resources for the antenna port of the UE.

Here, the gNB may determine attribute information of each UE to which the UE is to be connected from a set database, and determine antenna port information on each UE according to the attribute information, and if the UE is provided with two antenna ports, may configure SRS resources for each antenna port, respectively. The SRS resource refers to a resource for transmitting the SRS, and the SRS resource includes at least one of a frequency domain resource, a time domain resource, or a spatial domain resource, where the spatial domain resource refers to a resource required for signal transmission by spatial multiplexing. The configuration of the SRS resource comprises two parts, namely, the commonly configured SRS resource and the specially configured SRS resource, wherein the commonly configured SRS resource is also called as a cell specific SRS (SRS) resource and is issued in a system message; the dedicated configured SRS resource is also called UE-specific SRS (UE specific SRS) resource, and the configuration is completed through RRC connection.

Step 503, the UE transmits power P according to the signal_SRSMaximum transmission power P with UE_cMaxThe relation between them, the transmission power of the signal is distributed to the corresponding antenna ports.

Here, when P is_SRS≤P_cMaxWhen the power is/2, evenly distributing the sending power of the signals according to the number of the antenna ports of the sending end on the UE; when P is present_SRS>P_cMaxAt time/2, the transmission power of the signal is proportionally allocated according to the maximum transmission power that can be achieved by the transmission channel corresponding to each antenna port, for example, if the maximum transmission power that can be achieved by the transmission channel corresponding to the first antenna port is twice as large as the maximum transmission power that can be achieved by the transmission channel corresponding to the second antenna port, the transmission power allocated to the first antenna port should be twice as large as the transmission power allocated to the second antenna port. Wherein, P_SRSThe transmission power of the signal, i.e. the power required for currently transmitting the SRS; p_cMaxIs the maximum transmit power of the UE.

In step 504, the UE encapsulates the power information allocated to each antenna port into the SRS, and sends the SRS to the gNB according to the SRS resources configured by the gNB.

Step 505, the gNB determines relevant parameters of UE uplink transmission based on the received SRS, where the relevant parameters include RI, MCS, TPMI, and the like.

In step 506, the gNB determines the channel quality of each transmission channel according to the received SRS, so as to select a corresponding antenna port for uplink transmission according to the channel quality, where the channel quality is determined according to the power and channel state allocated to each antenna port in the SRS.

Here, the gNB acquires channel qualities of the respective transmission channels at the time of single stream transmission, wherein the respective channel qualities and the respective antenna ports correspond to the respective SINRs, respectively. Taking the first antenna port and the second antenna port as an example, the calculation formula of the SINR1 corresponding to the first antenna port is formula (1):

SINR1＝S1/(I1+N1) (1)；

wherein, S1 is the signal strength of the SRS on the first antenna port; i1 is the signal strength of the interference signal, N1 is the signal strength of the noise signal, and S1 is determined according to the power allocated to the first antenna port and the channel state.

The calculation formula of the SINR2 corresponding to the second antenna port is formula (2):

SINR2＝S2/(I2+N2) (2)；

wherein, S2 is the signal strength of the SRS on the second antenna port; i2 is the signal strength of the interference signal, N2 is the signal strength of the noise signal, and S2 is determined according to the allocated power and channel status of the second antenna port.

Step 507, the gNB sends Downlink Control Information (DCI), where the DCI includes parameters related to uplink transmission performed by the UE.

Here, the gNB may bear the parameters related to uplink transmission of the UE on the DCI, and transmit the DCI to the corresponding UE. The relevant parameters for the UE to perform uplink transmission may include SRS resources, Scheduling Request Indication (SRI) or precoding matrix Indication/rank Indication information.

In the embodiment of the application, the gNB side may measure the capability difference of the transmission power of each transmission channel according to the maximum transmission power that can be achieved by each antenna port or each transmission channel in the UE, and select an optimal precoding matrix for the UE, for example, when the UE is located at the edge of a cell, an antenna port corresponding to a transmission channel with a large maximum transmission power that can be achieved is selected to transmit a signal, which not only can optimize uplink transmission performance; compared with a scheme of adding a switching function between an antenna port and a sending channel, the method can reduce the time delay of uplink transmission.

Based on the same inventive concept of the foregoing embodiments, an embodiment of the present application provides a power control apparatus, fig. 6 is a schematic structural diagram of the power control apparatus provided in the embodiment of the present application, and as shown in fig. 6, the power control apparatus 600 includes:

an allocating unit 601 is configured to allocate the transmission power of the signal unequally between the antenna ports of the UE.

The allocating unit 601 is further configured to compare the transmission power of the signal with a set threshold to obtain a comparison result; and if the comparison result represents that the transmission power of the signal is greater than the set threshold, performing unequal ratio distribution on the transmission power of the signal among the antenna ports of the UE.

The allocating unit 601 is further configured to allocate the transmission power of the signal to the antenna ports of the UE in proportion according to the maximum transmission power of each antenna port.

It should be noted that, the allocating unit 601 is further configured to sequence the maximum transmission power of each antenna port to obtain a sequencing result; and distributing the sending power of the signal to the antenna ports of the UE in proportion according to the sequencing result.

It should be noted that, the allocating unit 601 is further configured to obtain a maximum transmit power sum of antenna ports according to a maximum transmit power of each antenna port of the UE; respectively determining the ratio of the maximum transmitting power of each antenna port to the sum of the maximum transmitting powers; and sequencing the ratio corresponding to each antenna port to obtain a sequencing result.

The allocating unit 601 is further configured to allocate the transmission power of the signal to the antenna port of the UE in proportion according to the maximum output power of each transmission channel.

It should be noted that, the allocating unit 601 is further configured to sort the maximum output powers of the sending channels to obtain a sorting result; and distributing the sending power of the signal to the antenna ports of the UE in proportion according to the sequencing result.

It should be noted that, the allocating unit 601 is further configured to obtain a maximum output power sum of the transmission channels according to the maximum output power of each transmission channel; respectively determining the ratio of the maximum output power of each transmitting channel to the sum of the maximum output powers; and sequencing the ratio corresponding to each sending channel to obtain a sequencing result.

The components in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware or a form of a software functional module.

The integrated unit, if implemented in the form of a software functional module and not sold or used as a stand-alone product, may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or partially contributed to by the prior art, and the computer software product is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Accordingly, embodiments of the present application provide a computer storage medium storing a computer program, which when executed by at least one processor implements the steps of the above embodiments.

Referring to fig. 7, a specific hardware structure of a user equipment 700 provided in an embodiment of the present application is shown, including: a network interface 701, a memory 702, and a processor 703; the various components are coupled together by a bus system 704. It is understood that the bus system 704 is used to enable communications among the components. The bus system 704 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 7 as the bus system 704. Wherein the content of the first and second substances,

the network interface 701 is configured to receive and transmit signals in a process of receiving and transmitting information with other external network elements;

a memory 702 for storing a computer program capable of running on the processor 703;

a processor 703 for executing, when running the computer program, the following:

and carrying out unequal ratio distribution on the transmission power of the signals among the antenna ports of the UE.

The processor 703 is further configured to, when running the computer program, perform:

comparing the sending power of the signal with a set threshold value to obtain a comparison result;

and if the comparison result represents that the transmission power of the signal is greater than the set threshold, performing unequal ratio distribution on the transmission power of the signal among the antenna ports of the UE.

and allocating the transmission power of the signal to the antenna ports of the UE in proportion according to the maximum transmission power of each antenna port.

sequencing the maximum transmitting power of each antenna port to obtain a sequencing result;

and distributing the sending power of the signal to the antenna ports of the UE in proportion according to the sequencing result.

obtaining the maximum transmitting power sum of antenna ports according to the maximum transmitting power of each antenna port of the UE;

respectively determining the ratio of the maximum transmitting power of each antenna port to the sum of the maximum transmitting powers;

and sequencing the ratio corresponding to each antenna port to obtain a sequencing result.

and distributing the transmission power of the signal to the antenna port of the UE in proportion according to the maximum output power of each transmission channel.

sequencing the maximum output power of each sending channel to obtain a sequencing result;

obtaining the maximum output power sum of the sending channels according to the maximum output power of each sending channel;

respectively determining the ratio of the maximum output power of each transmitting channel to the sum of the maximum output powers;

and sequencing the ratio corresponding to each sending channel to obtain a sequencing result.

It will be appreciated that the memory 702 in the subject embodiment can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous SDRAM (ESDRAM), Sync Link DRAM (SLDRAM), and direct memory bus RAM (DRRAM). The memory 702 of the methodologies described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The processor 703 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method may be implemented by hardware integrated logic circuits in the processor 703 or by instructions in the form of software. The Processor 703 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 702, and the processor 703 reads the information in the memory 702 and performs the steps of the above method in combination with the hardware thereof.

The description of the embodiments of the apparatus of the present application is similar to the description of the embodiments of the method described above, and has similar advantageous effects to the embodiments of the method. For technical details not disclosed in the embodiments of the apparatus of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.

Here, it should be noted that: the above description of the storage medium and device embodiments is similar to the description of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and apparatus of the present application, reference is made to the description of the embodiments of the method of the present application for understanding.

Of course, the apparatus in the embodiment of the present application may have other similar protocol interaction implementation cases, and those skilled in the art can make various corresponding changes and modifications according to the embodiment of the present application without departing from the spirit and the spirit of the present application, but these corresponding changes and modifications should fall within the scope of the claims appended to the method of the present application.

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

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

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

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the word "comprising" or "comprises", when used in this specification, does not exclude the presence of other elements, components, methods, articles or apparatus, or steps, which do not exclude the presence of other elements, components, methods, articles or apparatus.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the modules is only one logical functional division, and there may be other division ways in actual implementation, such as: multiple modules or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or modules may be electrical, mechanical or other.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules; the network module can be located in one place or distributed on a plurality of network modules; some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all functional modules in the embodiments of the present application may be integrated into one processing module, or each module may be separately used as one module, or two or more modules may be integrated into one module; the integrated module can be realized in a hardware form, and can also be realized in a form of hardware and a software functional module.

Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as a removable Memory device, a Read Only Memory (ROM), a magnetic disk, or an optical disk.

Alternatively, the integrated module described above in the present application may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a server to execute all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.

The above description is only for the embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of power control, the method comprising:

user Equipment (UE) performs unequal ratio distribution on the transmission power of signals among antenna ports of the UE.

2. The method of claim 1, wherein the signal is a Sounding Reference Signal (SRS); correspondingly, the antenna port is an SRS antenna port.

3. The method of claim 1 or 2, wherein the UE allocates the transmission power of the signal unequally among the antenna ports of the UE, and wherein the method comprises:

4. The method of claim 1 or 2, wherein the UE allocates the transmission power of the signal unequally among the antenna ports of the UE, and wherein the method comprises:

and the UE allocates the transmission power of the signal to the antenna ports of the UE in proportion according to the maximum transmission power of each antenna port.

5. The method according to claim 1 or 2, characterized in that the transmission power allocated to each antenna port is proportional to the maximum transmission power of each antenna port.

6. The method of claim 4, wherein the UE proportionally allocates the transmission power of the signal to the antenna ports of the UE according to the maximum transmission power of each antenna port, and comprises:

7. The method of claim 4, wherein the UE proportionally allocates the transmission power of the signal to the antenna ports of the UE according to the maximum transmission power of each antenna port, and comprises:

obtaining the maximum transmitting power sum of the antenna ports according to the maximum transmitting power of each antenna port of the UE;

sorting the ratio corresponding to each antenna port to obtain a sorting result;

8. The method of claim 1 or 2, wherein the UE allocates the transmission power of the signal unequally among the antenna ports of the UE, and wherein the method comprises:

and the UE distributes the transmission power of the signal to the antenna port of the UE in proportion according to the maximum output power of each transmission channel.

9. The method according to claim 1 or 2, characterized in that the transmission power allocated to each antenna port is proportional to the maximum output power of the transmission channel.

10. The method of claim 8, wherein the UE proportionally allocates the transmission power of the signal to the antenna ports of the UE according to the maximum output power of each transmission channel, and comprises:

11. The method of claim 8, wherein the UE proportionally allocates the transmission power of the signal to the antenna ports of the UE according to the maximum output power of each transmission channel, and comprises:

sorting the ratio corresponding to each sending channel to obtain a sorting result;

12. A power control apparatus, characterized in that the apparatus comprises:

an allocation unit, configured to allocate the transmission power of the signal unequally among the antenna ports of the user equipment UE.

13. The apparatus of claim 12, wherein the signal is a Sounding Reference Signal (SRS); correspondingly, the antenna port is an SRS antenna port.

14. The apparatus according to claim 12 or 13, wherein the allocating unit is further configured to compare the transmission power of the signal with a set threshold to obtain a comparison result;

15. The apparatus according to claim 12 or 13, wherein the allocating unit is further configured to allocate the transmission power of the signal to the antenna ports of the UE proportionally according to the maximum transmission power of each antenna port.

16. The apparatus according to claim 12 or 13, wherein the transmission power allocated to each antenna port is proportional to the maximum transmission power of each antenna port.

17. The apparatus according to claim 15, wherein the allocation unit is specifically configured to:

18. The apparatus according to claim 15, wherein the allocation unit is specifically configured to:

19. The apparatus according to claim 12 or 13, wherein the allocating unit is further configured to allocate the transmission power of the signal to the antenna ports of the UE proportionally according to the maximum output power of each transmission channel.

20. The apparatus of claim 12 or 13, wherein the transmission power allocated to each antenna port is proportional to the maximum output power of the transmission channel.

21. The apparatus according to claim 19, wherein the allocation unit is specifically configured to:

22. The apparatus according to claim 19, wherein the allocation unit is specifically configured to:

23. A user equipment, characterized in that the equipment comprises at least: a processor and a memory configured to store executable instructions, wherein:

the processor is configured to execute stored executable instructions configured to perform the method of any of the preceding claims 1 to 11.

24. A computer storage medium, characterized in that the computer storage medium stores a computer program which, when executed by at least one processor, implements the method according to any one of claims 1 to 11.