CN113939003A

CN113939003A - Uplink power control method and device

Info

Publication number: CN113939003A
Application number: CN202111188783.7A
Authority: CN
Inventors: 谷建宏; 王柏钢
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-01-14

Abstract

The application discloses an uplink power control method and device, and belongs to the field of communication. The method comprises the following steps: determining whether a first transmission power threshold of the terminal equipment meets the performance requirement of uplink transmission, wherein the first transmission power threshold is a maximum uplink transmission power threshold configured for the terminal equipment by the network equipment; if the first transmission power threshold value is not met, sending a first updating request for updating the first transmission power threshold value to the network equipment so that the network equipment updates the first transmission power threshold value, wherein the updated first transmission power threshold value is larger than the first transmission power threshold value before updating; receiving an updated first transmission power threshold value returned by the network equipment; and re-determining the uplink transmission power based on the updated first transmission power threshold value. The maximum uplink transmission power threshold value of the terminal equipment can be dynamically improved by the network equipment, so that the uplink performance of the terminal equipment positioned at the edge of the cell can be correspondingly improved.

Description

Uplink power control method and device

Technical Field

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

Background

With the popularization of communication devices such as modern smart phones and tablet computers, the mobile bandwidth flow is exponentially increased, and the requirements of users on network performance are higher and higher. In order to ensure efficient connection, mitigate interference, and improve service quality, the 3rd Generation Partnership Project (3 GPP) standard introduces Transmit Power Control (TPC) to implement power control in the downlink and uplink directions in a Long Term Evolution (LTE) system, and emphasizes precise control of uplink power of User Equipment (UE) to mitigate adverse effects of interference on network performance.

Currently, the 3GPP standard defines different P for base stations of different coverage sizes_EMAX，P_EMAXMaximum transmit power threshold for UEs in the cell covered by the base station, e.g. P for macro base station_EMAXDefined as 23dBm, P of small base station_EMAXDefined as 18 dBm.

In general, lower values of P are selected_EMAXThe Interference can be reduced, but the performance of Signal to Interference Ratio (SIR) can be affected because of P_EMAXIf the received signal strength is too low, the received signal strength may be lower than the receiver threshold, so that the uplink performance of the UE located at the cell edge is degraded, and therefore, P corresponding to the base station is required_EMAXAnd more reasonable control is carried out to improve the uplink performance of the UE positioned at the edge of the cell.

Disclosure of Invention

An object of the embodiments of the present application is to provide an uplink power control method and apparatus, so as to improve uplink performance of a UE located at a cell edge.

In a first aspect, an embodiment of the present application provides an uplink power control method, which is applied to a terminal device, and the method includes:

determining whether a first transmission power threshold of the terminal device meets a performance requirement of uplink transmission, wherein the first transmission power threshold is a maximum uplink transmission power threshold configured for the terminal device by a network device;

if not, sending a first update request for updating the first transmission power threshold value to the network device, so that the network device updates the first transmission power threshold value, wherein the updated first transmission power threshold value is greater than the first transmission power threshold value before updating;

receiving the updated first transmission power threshold value returned by the network equipment;

and re-determining the uplink transmission power based on the updated first transmission power threshold value.

In a second aspect, an embodiment of the present application provides an uplink power control method, which is applied to a network device, and the method includes:

receiving a first update request sent by a terminal device and used for updating a first transmission power threshold, wherein the first update request is sent by the terminal device when the first transmission power threshold of the terminal device does not meet the performance requirement of uplink transmission, and the first transmission power threshold is a maximum uplink transmission power threshold configured for the terminal device by the network device;

updating the first transmission power threshold in response to the first update request, wherein the updated first transmission power threshold is greater than the first transmission power threshold before updating;

and feeding back the updated first transmission power threshold value to the terminal equipment, so that the terminal equipment can determine the uplink transmission power again based on the updated first transmission power threshold value.

In a third aspect, an embodiment of the present application provides an uplink power control apparatus, which is applied to a terminal device, and the apparatus includes:

a first determining module, configured to determine whether a first transmission power threshold of the terminal device meets a performance requirement of uplink transmission, where the first transmission power threshold is a maximum uplink transmission power threshold configured by a network device for the terminal device;

a first request sending module, configured to send, to the network device, a first update request for updating a first transmission power threshold when the first transmission power threshold of the terminal device does not meet a performance requirement of uplink transmission, so that the network device updates the first transmission power threshold, where the updated first transmission power threshold is greater than the first transmission power threshold before updating;

a first receiving module, configured to receive the updated first transmission power threshold value returned by the network device;

and the second determining module is used for re-determining the uplink transmission power based on the updated first transmission power threshold value.

In a fourth aspect, an embodiment of the present application provides an uplink power control apparatus, which is applied to a network device, and the apparatus includes:

a first request receiving module, configured to receive a first update request sent by a terminal device and used for updating a first transmission power threshold, where the first update request is sent by the terminal device when a first transmission power threshold of the terminal device does not meet a performance requirement of uplink transmission, and the first transmission power threshold is a maximum uplink transmission power threshold configured for the terminal device by the network device;

a first updating module, configured to update the first transmission power threshold in response to the first update request, where the updated first transmission power threshold is greater than the first transmission power threshold before updating;

and the first sending module is configured to feed back the updated first transmission power threshold value to the terminal device, so that the terminal device determines the uplink transmission power again based on the updated first transmission power threshold value.

In a fifth aspect, the present application provides an electronic device, which includes a processor, a memory, and a program or instructions stored on the memory and executable on the processor, and when executed by the processor, the program or instructions implement the steps of the method according to the first aspect or the second aspect.

In a sixth aspect, embodiments of the present application provide a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the first or second aspect.

In a seventh aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the first aspect or the second aspect.

In the embodiment of the present application, when the maximum uplink transmission power threshold of the terminal device does not meet the transmission performance requirement, the network device may dynamically raise the maximum uplink transmission power threshold of the terminal device, so that the uplink performance of the terminal device located at the edge of the cell is also correspondingly raised.

Drawings

Fig. 1 is a flowchart illustrating an uplink power control method according to an embodiment of the present application.

Fig. 2 is an interaction diagram of a base station and a UE according to an embodiment of the present application.

Fig. 3 is a schematic diagram of a closed-loop power control mechanism according to an embodiment of the present application.

Fig. 4 is a flowchart illustrating an uplink power control method according to another embodiment of the present application.

Fig. 5 is a flowchart illustrating an uplink power control method according to another embodiment of the present application.

Fig. 6 is a schematic structural diagram of an uplink power control apparatus according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of an uplink power control apparatus according to another embodiment of the present application.

Fig. 8 is a schematic hardware structure diagram of a terminal device according to an embodiment of the present application.

Fig. 9 is a schematic hardware structure diagram of a network device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The uplink power control method, apparatus and electronic device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

First, a method for controlling uplink power according to an embodiment of the present application will be described.

As shown in fig. 1, an uplink power control method provided in an embodiment of the present application may include:

step 101, network device 11 configures initial uplink transmission power value for terminal device 12.

The network device 11 may be a base station and the terminal device may be a handset of a user.

When a terminal device (also called user equipment, UE) initially accesses a network side, the network device may configure an initial transmission power value for uplink transmission to the terminal device.

In the embodiment of the present application, the uplink transmission may include, but is not limited to, an uplink Shared Channel (PUSCH) and an uplink Control Channel (PUCCH), and the following description mainly takes power Control of the PUSCH as an example.

The power control mechanism of the PUSCH comprises two parts of open loop control and closed loop control. Generally, an initial transmission power value of the PUSCH is obtained through open loop control; and obtaining an adjustment value of the PUSCH transmission power through closed-loop power control.

The mechanism of open loop power control is: in the process of registering UE to the cell, the base station of the cell can pass through the systemThe broadcast information sends the maximum uplink transmission power threshold value (hereinafter referred to as the first transmission power threshold value) of the UE in the cell and the target receiving power P of the base station to the UE₀The maximum uplink transmission power threshold value configured by the base station for the UE in the cell can be used as P_EMAXIt means that the UE determines the power spectrum density range under the corresponding RB according to its own power capability and the power backoff under the configuration of the modulation mode and the frequency domain Resource scheduling granularity (Resource Block, RB) required by the current service. Before normal service communication, the UE determines a Path Loss (PL) under the current service according to the measured downlink Reference Signal Receiving Power (RSRP) (Pr) and the current downlink Power (Pt) notified by the base station:

PL＝P_t-P_r

as shown in fig. 2, the base station sends a Cell Reference Signal (CRS) to the UE, so that the UE can determine the path loss PL under the current service.

UE knows target receiving power P of base station₀And path loss PL, the uplink transmit power of the UE may be determined by:

P_PUSCH(i)＝MIN{P_CMAX,10log₁₀(M_PUSCH(i))+P_{O_PUSCH}(j)+α(j)*PL+Δ_TF(i)+f(i)}[dBm]

wherein, P_PUSCH(i) Indicates the initial transmission power value, M, of the PUSCH_PUSCH(i) The method comprises the steps of representing the PUSCH bandwidth in the ith subframe, wherein the PUSCH bandwidth can be represented by the number of effective RBs contained; p_{O_PUSCH}(j) Nominal power P dedicated by cell_{O_NOMINAL_PUSCH}(j) And UE-specific nominal power P_{O_UE_PUSCH}(j) Two parts, P_{O_PUSCH}(j)＝P_{O_NOMINAL_PUSCH}(j)+P_{O_UE_PUSCH}(j) (ii) a α (j) represents a compensation factor for path loss; delta_TF(i) Represents a power offset determined by a modulation coding scheme and a data type; and f (i) represents a closed loop power control adjustment value, which is divided into an accumulation mode and an absolute value mode.

Wherein, P_CMAXRepresents the maximum transmit power of the UE at a certain carrier; the base station corresponding to the carrier wave is configured in a small areaMaximum uplink transmission power threshold value P of UE_EMAX(ii) a The power capability of a UE is generally characterized by a maximum transmission power value (i.e., a preset power value described below) at a power class (PowerClass) of the UE, and may be represented by P_PowerClassAnd (4) showing.

P_CMAX、P_EMAXAnd P_PowerClassThe relationship between the three is as follows:

P_{CMAX_L}≤P_CMAX≤P_{CMAX_H}

P_{CMAX_L}＝MIN{P_EMAX-ΔT_C,P_PowerClass-MAX(MPR+A-MPR,P-MPR)-ΔT_C}

P_{CMAX_H}＝MIN{P_EMAX,P_PowerClass}

wherein MPR represents Maximum output Power Reduction (Maximum Power Reduction), a-MPR represents additional Maximum Power Reduction, P-MPR represents Maximum Power Reduction set by the Power Management Function (Maximum Power Reduction set by Power Management Function), Δ Tc represents allowed loose value of transmission Power of the edge of the operating band, and Δ Tc is 1.5dB if located in 4MHz of the edge of the band, otherwise Δ Tc is 0 dB.

The base station configures a maximum uplink transmission power threshold (first transmission power threshold) P for the UE in the cell_EMAXA maximum uplink transmission power threshold (hereinafter, referred to as a second transmission power threshold) P that does not interfere with neighboring cells is also configured for the cell_EMAXIGenerally, the second transmission power threshold is greater than the first transmission power threshold, i.e. P_EMAXI＞P_EMAX。

Step 102, terminal device 12 performs uplink transmission based on the initial uplink transmission power value.

Step 103, the network device 11 adjusts the uplink transmission power of the terminal device 11.

Still taking the transmission of PUSCH as an example, in this step, the base station may perform uplink transmission power control by using a closed-loop power control mechanism.

The closed loop power control mechanism is as follows: the base station determines an RB and a Modulation and Coding Scheme (MCS) according to the current service, measures a preset performance parameter (such as SIR, SINR, or BLER) of uplink transmission of the UE, and performs power adjustment in combination with the preset performance parameter corresponding to the target MCS. Under the mechanism, for the UE, whether the closed-loop power control mode is the accumulation mode or the absolute value mode can be determined according to parameters configured by a higher layer.

Under the closed-loop power control mechanism, as shown in fig. 3, step 103 may include:

step 301, determining whether a preset performance parameter of uplink transmission of the terminal device meets a preset requirement; if not, go to step 302, and if the preset requirement is exceeded, go to step 303.

The preset performance parameter may include at least one of a Signal to Interference Ratio (SIR), a Signal to Interference plus Noise Ratio (SINR), a Block Error Rate (BLER), and other performance parameters (such as a low latency requirement parameter in an NR system) determined according to a service requirement.

Step 302, sending a first command to a terminal device, where the first command is a transmission power control command sent by the network device for increasing uplink transmission power.

Step 303, sending a second command to the terminal device, where the first command is a transmission power control command sent by the network device for reducing uplink transmission power.

For example, if the SINR of the uplink transmission of the UE is smaller than the preset threshold, which indicates that the total uplink transmission power of the UE is smaller, a TPC command may be sent to the UE to increase the uplink transmission power of the UE; if the SINR of the uplink transmission of the UE is greater than the preset threshold, it indicates that the total uplink transmission power of the UE is too high, and a TPC command may be sent to the UE to reduce the uplink transmission power of the UE.

Step 304, terminal device 12 transmits power threshold value (P) in its own maximum uplink_EMAX) When the performance requirement of uplink transmission is not met, the P for updating is sent to the network equipment_EMAXThe first update request.

In particular, if the current transmission power of the terminal device has reached the maximum uplink transmission power thresholdValue (P)_EMAX) If the preset performance parameter of the uplink transmission of the terminal device still does not meet the preset requirement, the uplink transmission parameter can be sent to increase the P_EMAXThe first update request.

The terminal device may determine whether the preset performance parameter of the uplink transmission meets the preset requirement based on whether the first command is received, and if the first command is received, it indicates that the preset performance parameter of the uplink transmission does not meet the preset requirement, otherwise, it meets the preset requirement.

Optionally, the P is updated after sending to the network device_EMAXBefore the first update request, P may also be determined_EMAXIf the power value is less than the preset power value, sending the updated P to the network equipment_EMAXThe first update request. The preset power value is a power value representing the power capability of the terminal device, and as an example, the preset power value is determined according to the power class of the terminal device, and is generally a maximum transmission power value (P) under the power class (PowerClass) of the terminal device_PowerClass). That is, the current uplink transmission power of the UE has reached P_EMAXAnd P is_EMAX<P_PowerClassAt that time, an update P is sent_EMAXThe request of (1).

Step 305, the network device 11 responds to the first update request pair P_EMAXThe update is performed.

Generally, post-update P is requested based on a first update_EMAXGreater than P before update_EMAX。

Updated P_EMAXCan be expressed as: p_EMAX’。

As an example, P_EMAX’＝MIN{P_PowerClass,P_EMAXI}。

As another example, P_EMAX’∈(P_PowerClass,P_EMAXI]。

Wherein, P_EMAXIThat is, the network device configures the maximum uplink transmission power threshold value for the cell where the terminal device is located, where the maximum uplink transmission power threshold value does not interfere with the neighboring cell.

Step 306, the network device 11 feeds back to the terminal device 12Updated P_EMAX。

Step 307, terminal device 12 bases on the updated P_EMAXAnd carrying out uplink transmission.

Under the closed-loop power control mechanism, the formula for the UE to calculate the uplink transmission power value may refer to the relevant protocol.

According to the uplink power control method provided by the embodiment of the application, when the maximum uplink transmission power threshold of the terminal device does not meet the transmission performance requirement, the network device can dynamically raise the maximum uplink transmission power threshold of the terminal device, so that the uplink performance of the terminal device located at the edge of the cell is correspondingly raised.

Optionally, terminal device 12 may determine its maximum uplink transmission power threshold (P)_EMAX) When the performance requirement of uplink transmission is met, a message for updating P may be sent to network device 12_EMAXSo that the network device 11 is paired with P_EMAXUpdate is performed, at this time, the updated P_EMAXLess than P before update_EMAX。

Specifically, if the current transmission power of the terminal device does not reach the maximum uplink transmission power threshold value (P)_EMAX) If the predetermined performance parameter of the uplink transmission of the terminal device has met the predetermined requirement, the ue may send a signal for reducing P_EMAXThe second update request of (1).

The terminal device may determine whether the preset performance parameter of the uplink transmission meets the preset requirement based on whether the second command is received, and if the second command is received, it indicates that the preset performance parameter of the uplink transmission meets the preset requirement, otherwise, the preset performance parameter of the uplink transmission does not meet the preset requirement.

According to the uplink power control method provided by the embodiment of the application, the network device can dynamically raise the maximum uplink transmission power threshold value of the terminal device when the maximum uplink transmission power threshold value of the terminal device does not meet the transmission performance requirement, and the network device can dynamically reduce the maximum uplink transmission power threshold value of the terminal device when the maximum uplink transmission power threshold value of the terminal device meets the transmission performance requirement, so that energy waste is avoided.

As shown in fig. 4, an embodiment of the present application further provides an uplink transmit power control method, which may be applied to the terminal device 12 shown in fig. 1, and the method may include:

step 400, begin.

Step 401, determining an initial uplink transmission power value based on the configuration of the network device, and performing uplink transmission based on the initial uplink transmission power value.

Step 402, receive a transmit power control command from a network device.

Step 403, determining whether the first transmission power threshold of the terminal device meets the performance requirement of uplink transmission; if not, go to step 404; if yes, go to step 406.

Wherein the first transmission power threshold is a maximum uplink transmission power threshold (P) configured for the terminal device by the network device_EMAX)。

As an example, step 403 may specifically include: determining whether a preset performance parameter of uplink transmission of the terminal equipment meets a preset requirement or not under the condition that the current uplink transmission power of the terminal equipment reaches the first transmission power threshold value; if not, determining that the first transmission power threshold value of the terminal equipment does not meet the performance requirement of uplink transmission, otherwise, determining that the first transmission power threshold value of the terminal equipment meets the performance requirement of uplink transmission. I.e. if the current transmission power of the terminal device has reached the maximum uplink transmission power threshold value (P)_EMAX) If the preset performance parameter of the uplink transmission of the terminal device still does not meet the preset requirement, the network device may send a signal for increasing the P_EMAXThe first update request.

Determining whether the preset performance parameter of the uplink transmission of the terminal device meets a preset requirement may include: and determining whether the first command is received, if so, determining that the first transmission power threshold value of the terminal equipment does not meet the performance requirement of uplink transmission, otherwise, determining that the first transmission power threshold value of the terminal equipment does not meet the performance requirement of uplink transmission. The first command is a transmission power control command which is sent by the network equipment and is used for increasing uplink transmission power under the condition that the preset performance parameter of uplink transmission of the terminal equipment is determined not to meet the preset requirement; the preset performance parameters may include, but are not limited to, at least one of SIR, SINR, and BLER.

Step 404, sending a first update request for updating the first transmission power threshold value to a network device, so that the network device updates the first transmission power threshold value.

Wherein the updated first transmission power threshold is greater than the first transmission power threshold before updating.

Optionally, before step 404, it may be further determined whether the first transmit power threshold is smaller than a preset power value, and if so, step 404 is executed. And the preset power value is a power value representing the power capability of the terminal equipment. That is, the current uplink transmission power of the UE has reached P_EMAXAnd P is_EMAX<P_PowerClassAt that time, an update P is sent_EMAXThe request of (1).

As an example, the preset power value is determined according to the power class of the terminal device, and specifically may be a maximum transmission power value (P) under the power class (PowerClass) of the terminal device_PowerClass)。

Further, as an example, the updated first transmission power threshold is the preset power value and a second transmission power threshold (P)_EMAXI) The relatively smaller one of which, i.e. P_EMAX’＝MIN{P_PowerClass,P_EMAXI}; as another example, the updated first transmission power threshold value is greater than the preset power value (P)_PowerClass) And is less than or equal to a second transmission power threshold value (P)_EMAXI) I.e. P_EMAX’∈(P_PowerClass,P_EMAXI]. Wherein, P_EMAX’Indicating the updated first transmission power threshold value, and the second transmission power threshold value is that the network device is the terminalMaximum uplink transmission power threshold value (P) configured by cell where equipment is located and not interfering with adjacent cell_EMAXI)。

Step 405, receiving the updated first transmission power threshold value returned by the network device.

And step 406, re-determining the uplink transmission power based on the updated first transmission power threshold value.

Taking the transmission of the PUSCH as an example, the terminal device may re-determine the uplink transmission power based on the closed-loop power control mechanism and the updated first transmission power threshold, where the specific determination process is as described above and is not described here repeatedly.

Optionally, the method shown in fig. 4 may further include: if the first transmission power threshold value of the terminal device meets the performance requirement of uplink transmission, sending a second updating request for updating the first transmission power threshold value to the network device, so that the network device updates the first transmission power threshold value, wherein the updated first transmission power threshold value is smaller than the first transmission power threshold value before updating.

Specifically, if the current transmission power of the terminal device does not reach the maximum uplink transmission power threshold, but the preset performance parameter of the uplink transmission of the terminal device already meets the preset requirement, a second update request for reducing the first transmission power threshold may be sent.

As shown in fig. 5, an embodiment of the present application further provides an uplink transmit power control method, which may be applied to the network device 11 shown in fig. 1, and the method may include:

step 500, begin.

Step 501, configuring an initial uplink transmission power value for the terminal device.

Step 502, receiving uplink transmission of the terminal device.

Step 503, sending a transmission power control command to the terminal device.

Step 504, receiving a first update request sent by a terminal device for updating a first transmission power threshold, where the first update request is sent by the terminal device when the first transmission power threshold of the terminal device does not meet a performance requirement of uplink transmission, and the first transmission power threshold is a maximum uplink transmission power threshold configured for the terminal device by the network device.

Optionally, before step 504, the method shown in fig. 5 may further include: determining whether a preset performance parameter of uplink transmission of the terminal equipment meets a preset requirement; and if not, sending a first command to the terminal equipment, wherein the first command is a transmission power control command which is sent by the network equipment and used for increasing uplink transmission power.

Wherein the preset performance parameter includes, but is not limited to, at least one of SIR, SINR and BLER.

Optionally, the first update request is sent by the terminal device when the first transmission power threshold value is smaller than a preset power value, where the preset power value is a power value representing power capability of the terminal device.

Optionally, the updated first transmission power threshold is a relatively smaller one of the preset power value and a second transmission power threshold, where the second transmission power threshold is a maximum uplink transmission power threshold configured by the network device for the cell where the terminal device is located and not interfering with the neighboring cell.

Optionally, the preset power value is determined according to a power class of the terminal device.

Step 505, updating the first transmission power threshold in response to the first update request, wherein the updated first transmission power threshold is greater than the first transmission power threshold before updating.

Step 506, feeding back the updated first transmission power threshold value to the terminal device, so that the terminal device re-determines the uplink transmission power based on the updated first transmission power threshold value.

Optionally, the method shown in fig. 5 may further include:

and receiving a second updating request which is sent by the terminal equipment and used for updating the first transmission power threshold value, wherein the second updating request is sent when the first transmission power threshold value of the terminal equipment meets the performance requirement of uplink transmission.

Updating the first transmission power threshold value in response to the second update request, wherein the updated first transmission power threshold value is smaller than the first transmission power threshold value before updating.

Optionally, before receiving a second update request for updating the first transmission power threshold value sent by the terminal device, the method shown in fig. 5 may further include: determining whether a preset performance parameter of uplink transmission of the terminal equipment meets a preset requirement; and if so, sending a second command to the terminal equipment, wherein the second command is a transmission power control command which is sent by the network equipment and is used for reducing uplink transmission power.

The above is a description of the uplink power control method provided in the embodiment of the present application.

It should be noted that, in the uplink power control method provided in the embodiment of the present application, the execution main body may be an uplink power control device, or a control module used for executing loading of the uplink power control method in the uplink power control device. In the embodiment of the present application, an uplink power control method performed by an uplink power control device is taken as an example to describe the uplink power control method provided in the embodiment of the present application.

The following describes an uplink power control device provided in an embodiment of the present application.

As shown in fig. 6, an embodiment of the present application provides an uplink power control apparatus 600, which may be applied to the terminal device 12 shown in fig. 1, and the apparatus may include: a first determining module 603, a first update request sending module 604, a first receiving module 605, and a second determining module 605.

A first determining module 603, configured to determine whether a first transmission power threshold of the terminal device meets a performance requirement of uplink transmission, where the first transmission power threshold is a maximum uplink transmission power threshold configured for the terminal device by a network device.

As an example, the first determining module 603 may be specifically configured to: determining whether a preset performance parameter of uplink transmission of the terminal equipment meets a preset requirement or not under the condition that the current uplink transmission power of the terminal equipment reaches the first transmission power threshold value; if not, determining that the first transmission power threshold value of the terminal equipment does not meet the performance requirement of uplink transmission, otherwise, determining that the first transmission power threshold value of the terminal equipment meets the performance requirement of uplink transmission.

More specifically, the first determining module 603 may be configured to: and determining whether the first command is received, if so, determining that the first transmission power threshold value of the terminal equipment does not meet the performance requirement of uplink transmission, otherwise, determining that the first transmission power threshold value of the terminal equipment does not meet the performance requirement of uplink transmission. The first command is a transmission power control command which is sent by the network equipment and is used for increasing uplink transmission power under the condition that the preset performance parameter of uplink transmission of the terminal equipment is determined not to meet the preset requirement; the preset performance parameters may include, but are not limited to, at least one of SIR, SINR, and BLER.

Optionally, the first determining module 603 may be further configured to: before sending a first update request for updating the first transmission power threshold value to the network device, determining whether the first transmission power threshold value is smaller than a preset power value, and if so, sending a first update request for updating the first transmission power threshold value to the network device. And the preset power value is a power value representing the power capability of the terminal equipment. That is, the current uplink transmission power of the UE has reached P_EMAXAnd P is_EMAX<P_PowerClassWhen sending is used to increase P_EMAXThe update request of (2).

A first request sending module 604, configured to send, to the network device, a first update request for updating a first transmission power threshold when the first transmission power threshold of the terminal device does not meet a performance requirement of uplink transmission, so that the network device updates the first transmission power threshold, where the updated first transmission power threshold is greater than the first transmission power threshold before updating.

As an example, the updated first transmission power threshold value is the preset power value and a second transmission power threshold value (P)_EMAXI) The relatively smaller one of which, i.e. P_EMAX’＝MIN{P_PowerClass,P_EMAXI}; as another example, the updated first transmission power threshold value is greater than the preset power value (P)_PowerClass) And is less than or equal to a second transmission power threshold value (P)_EMAXI) I.e. P_EMAX’∈(P_PowerClass,P_EMAXI]. Wherein, P_EMAX’Indicating the updated first transmission power threshold, where the second transmission power threshold is a maximum uplink transmission power threshold (P) of a non-interfering neighbor cell configured by the network device for the cell where the terminal device is located_EMAXI)。

A first receiving module 605, configured to receive the updated first transmission power threshold value returned by the network device.

A second determining module 606, configured to re-determine the uplink transmission power based on the updated first transmission power threshold.

Optionally, the apparatus 600 may further include: and the initial uplink transmission power determining module is used for determining an initial uplink transmission power value based on the configuration of the network equipment when the terminal equipment is accessed to the network side, and performing uplink transmission based on the initial uplink transmission power value.

Optionally, the apparatus 600 may further include: and the instruction receiving module is used for receiving the transmission power control command from the network equipment.

According to the uplink power control device provided by the embodiment of the application, when the maximum uplink transmission power threshold of the terminal device does not meet the transmission performance requirement, the network device can dynamically improve the maximum uplink transmission power threshold of the terminal device, so that the uplink performance of the terminal device located at the edge of the cell is correspondingly improved.

Optionally, the apparatus shown in fig. 6 may further include: a second request sending module, configured to send, to the network device, a second update request for updating the first transmission power threshold when the first transmission power threshold of the terminal device meets a performance requirement of uplink transmission, so that the network device updates the first transmission power threshold, where the updated first transmission power threshold is smaller than the first transmission power threshold before updating.

As shown in fig. 7, an embodiment of the present application provides an uplink power control apparatus 700, which may be applied to the network device 11 shown in fig. 1, and the apparatus may include: a first update request receiving module 704, a first update module 705 and a first sending module 706.

A first update request receiving module 704, configured to receive a first update request sent by a terminal device and used to update a first transmission power threshold, where the first update request is sent by the terminal device when a first transmission power threshold of the terminal device does not meet a performance requirement of uplink transmission, and the first transmission power threshold is a maximum uplink transmission power threshold configured by the network device for the terminal device.

A first updating module 705, configured to update the first transmission power threshold, where the updated first transmission power threshold is greater than the first transmission power threshold before updating.

As an example, the updated first transmission power threshold is a relatively smaller one of the preset power value and a second transmission power threshold, where the second transmission power threshold is a maximum uplink transmission power threshold configured by the network device for the cell where the terminal device is located and not interfering with the neighboring cell; the preset power value is determined according to the power level of the terminal equipment.

A first sending module 706, configured to feed back the updated first transmission power threshold to the terminal device, so that the terminal device determines the uplink transmission power again based on the updated first transmission power threshold.

Optionally, the apparatus 700 may further include: a first performance determining module, configured to determine whether a preset performance parameter of uplink transmission of the terminal device meets a preset requirement before receiving a first update request sent by the terminal device and used for updating the first transmission power threshold.

Further, the apparatus 700 may further include: a first command sending module, configured to send a first command to the terminal device when a preset performance parameter of uplink transmission of the terminal device does not meet a preset requirement, where the first command is a transmission power control command for increasing uplink transmission power, which is sent by the network device when it is determined that the preset performance parameter of uplink transmission of the terminal device does not meet the preset requirement; the preset performance parameter includes at least one of SIR, SINR and BLER.

Optionally, the apparatus shown in fig. 7 may further include: the device comprises a second request receiving module, a second updating module and a second sending module.

A second request receiving module, configured to receive a second update request sent by the terminal device and used for updating the first transmission power threshold, where the second update request is sent by the terminal device when the first transmission power threshold of the terminal device meets a performance requirement of uplink transmission.

A second updating module, configured to update the first transmission power threshold in response to the second update request, where the updated first transmission power threshold is smaller than the first transmission power threshold before updating.

And the second sending module is configured to feed back the updated first transmission power threshold to the terminal device, so that the terminal device determines the uplink transmission power again based on the updated first transmission power threshold.

Optionally, the apparatus shown in fig. 7 may further include: the device comprises a second performance determination module and a second command sending module.

A second performance determining module, configured to determine whether a preset performance parameter of uplink transmission of the terminal device meets a preset requirement before the second update request, which is sent by the terminal device and used for updating the first transmission power threshold, is received;

and a second command sending module, configured to send a second command to the terminal device when a preset performance parameter of uplink transmission of the terminal device meets a preset requirement, where the second command is a transmission power control command sent by the network device and used for reducing uplink transmission power.

The uplink power control device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.

The uplink power control device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The uplink power control device provided in the embodiment of the present application can implement each process implemented by the uplink power control device in the embodiments shown in fig. 4 or fig. 5, and for avoiding repetition, details are not described here again.

Optionally, an embodiment of the present application further provides an electronic device, which includes a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, where the program or the instruction is executed by the processor to implement each process of the foregoing uplink power control method embodiment, and can achieve the same technical effect, and details are not repeated here to avoid repetition.

It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and the non-mobile electronic devices described above.

Fig. 8 is a schematic diagram of a hardware structure of a terminal device for implementing the embodiment of the present application.

The terminal device 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, and a processor 810.

Those skilled in the art will appreciate that terminal device 800 may further include a power source (e.g., a battery) for supplying power to various components, and the power source may be logically connected to processor 810 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The terminal device structure shown in fig. 8 does not constitute a limitation of the terminal device, and the terminal device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.

The processor 810 is configured to determine whether a first transmission power threshold of the terminal device meets a performance requirement of uplink transmission, where the first transmission power threshold is a maximum uplink transmission power threshold configured for the terminal device by a network device; if not, sending a first update request for updating the first transmission power threshold value to the network device, so that the network device updates the first transmission power threshold value, wherein the updated first transmission power threshold value is greater than the first transmission power threshold value before updating; receiving the updated first transmission power threshold value returned by the network equipment; and re-determining the uplink transmission power based on the updated first transmission power threshold value.

According to the terminal device provided by the embodiment of the application, when the maximum uplink transmission power threshold of the terminal device does not meet the transmission performance requirement, the network device can dynamically improve the maximum uplink transmission power threshold of the terminal device, so that the uplink performance of the terminal device located at the edge of a cell is correspondingly improved.

The embodiment of the present application further provides a network device, which includes a processor and a communication interface, where the processor is configured to implement each process of the foregoing uplink power control method embodiment, and the communication interface is used for accessing a terminal device. The network device embodiment corresponds to the network device method embodiment, and all implementation processes and implementation manners of the method embodiment can be applied to the network device embodiment and can achieve the same technical effect.

Specifically, the embodiment of the application further provides a network device. As shown in fig. 9, the network device 900 includes: antenna 91, radio frequency device 92, baseband device 93. The antenna 91 is connected to a radio frequency device 92. In the uplink direction, the rf device 92 receives information via the antenna 91 and sends the received information to the baseband device 93 for processing. In the downlink direction, the baseband device 93 processes information to be transmitted and transmits the information to the rf device 92, and the rf device 92 processes the received information and transmits the processed information through the antenna 91.

The above-mentioned frequency band processing means may be located in the baseband means 93, and the method performed by the network device in the above embodiment may be implemented in the baseband means 93, where the baseband means 93 includes a processor 94 and a memory 95.

The baseband device 93 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 9, wherein one of the chips, for example, the processor 94, is connected to the memory 95 to call up the program in the memory 95 to perform the network device operation shown in the above method embodiment.

The baseband device 93 may further include a network interface 96 for exchanging information with the radio frequency device 92, for example, a Common Public Radio Interface (CPRI).

Specifically, the network device of the embodiment of the present invention further includes: the instructions or programs stored in the memory 95 and capable of being executed on the processor 94, and the processor 94 calls the instructions or programs in the memory 95 to execute the method executed by each module shown in fig. 6, and achieve the same technical effect, and are not described herein in detail to avoid repetition.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above-mentioned uplink power control method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the uplink power control method embodiment, and can achieve the same technical effect, and the details are not repeated here to avoid repetition.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

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, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An uplink power control method is applied to a terminal device, and the method comprises the following steps:

2. The method of claim 1, wherein the determining whether the first transmission power threshold of the terminal device meets the performance requirement for uplink transmission comprises:

determining whether a preset performance parameter of uplink transmission of the terminal equipment meets a preset requirement or not under the condition that the current uplink transmission power of the terminal equipment reaches the first transmission power threshold value;

and if not, determining that the first transmission power threshold value of the terminal equipment does not meet the performance requirement of uplink transmission.

3. The method of claim 2, wherein the determining whether the preset performance parameter of the uplink transmission of the terminal device meets a preset requirement comprises:

determining whether a first command is received, wherein the first command is a transmission power control command which is sent by the network equipment under the condition that the preset performance parameter of uplink transmission of the terminal equipment is determined not to meet a preset requirement and is used for increasing uplink transmission power;

if so, determining that the first transmission power threshold value of the terminal equipment does not meet the performance requirement of uplink transmission.

4. The method of any of claims 1-3, wherein prior to the sending of the first update request to the network device for updating the first transmit power threshold value, the method further comprises:

determining whether the first transmission power threshold value is smaller than a preset power value, wherein the preset power value is a power value representing the power capability of the terminal equipment;

and if the first transmission power threshold value is smaller than the first transmission power threshold value, sending a first updating request for updating the first transmission power threshold value to the network equipment.

5. The method of claim 1, further comprising:

if the first transmission power threshold value of the terminal device meets the performance requirement of uplink transmission, sending a second updating request for updating the first transmission power threshold value to the network device, so that the network device updates the first transmission power threshold value, wherein the updated first transmission power threshold value is smaller than the first transmission power threshold value before updating.

6. An uplink power control method, applied to a network device, the method comprising:

7. The method according to claim 6, wherein before receiving a first update request sent by the terminal device for updating the first transmission power threshold value, the method further comprises:

determining whether a preset performance parameter of uplink transmission of the terminal equipment meets a preset requirement;

and if not, sending a first command to the terminal equipment, wherein the first command is a transmission power control command which is sent by the network equipment and used for increasing uplink transmission power.

8. The method of claim 6,

the first update request is sent by the terminal device when the first transmission power threshold value is smaller than a preset power value, where the preset power value is a power value representing power capability of the terminal device.

9. The method of claim 6, further comprising:

receiving a second updating request which is sent by the terminal equipment and used for updating a first transmission power threshold value, wherein the second updating request is sent when the first transmission power threshold value of the terminal equipment meets the performance requirement of uplink transmission;

updating the first transmission power threshold value in response to the second update request, wherein the updated first transmission power threshold value is smaller than the first transmission power threshold value before updating;

10. The method of claim 9, wherein before the receiving the second update request sent by the terminal device for updating the first transmission power threshold value, the method further comprises:

and if so, sending a second command to the terminal equipment, wherein the second command is a transmission power control command which is sent by the network equipment and is used for reducing uplink transmission power.

11. An uplink power control device, applied to a terminal device, the device comprising:

12. An uplink power control apparatus, applied to a network device, the apparatus comprising: