CN105379369B

CN105379369B - A kind of method of user equipment and determining transmission power

Info

Publication number: CN105379369B
Application number: CN201480000800.1A
Authority: CN
Inventors: 夏亮; 刘德平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-01-29
Filing date: 2014-01-29
Publication date: 2019-10-25
Anticipated expiration: 2034-01-29
Also published as: CN105379369A; WO2015113244A1

Abstract

The present invention provides a kind of method of user equipment and determining transmission power, which includes: receiving module, for receiving the minimum emissive power parameter value of base station transmission；First determining module, for determining minimum emissive power according to minimum emissive power parameter value；Second determining module, for determining the transmission power of the approach signal sent to correspondent user device according to minimum emissive power, wherein user equipment emits approach signal with the transmission power, and base station is enabled to listen to the approach signal.Above-mentioned technical proposal, minimum emissive power is determined by receiving the minimum emissive power parameter value that base station issues, and the transmission power of approach signal is determined according to minimum emissive power, so that base station can listen to the approach signal of user equipment transmitting, thus the technical problem that the transmission power for solving the approach signal of user equipment in the prior art is too low, it realizes that base station normally receives approach signal, ensure that base station to the Lawful Interception of the UE information sent.

Description

User equipment and method for determining transmitting power

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a user equipment and a method for determining a transmit power.

Background

In communication technology, Proximity Services (ProSe) refers to a service scheme for information transfer between User Equipments (UEs) that are close to each other. ProSe may be described specifically as a point-to-point (Peer, P2P) service or a Device-to-Device (D2D) service, etc.

In the ProSe system, the distance between the UE transmitting the proximity signal, i.e., the ProSe signal, and the UE receiving the proximity signal is short, the signal propagation path is short, and the signal fading is small, so that the communication between the UEs can be directly performed without the need of forwarding through the base station. For this reason, the ProSe signal transmission power transmitted by the UE is generally low.

In the proximity service, although the base station does not need to transmit the proximity signal transmitted by the UE, the base station still needs to receive the proximity signal transmitted by the UE and lawfully monitors the information transmitted by the UE. However, since the ProSe signal transmission power sent by the UE is too low, the base station cannot correctly receive the proximity signal, and the base station cannot guarantee lawful interception of the information sent by the UE. It can be seen that the user equipment in the prior art has a technical problem that the transmission power of the proximity signal is too low.

Disclosure of Invention

The invention provides user equipment and a method for determining transmitting power, which solve the technical problem that the transmitting power of a proximity signal is too low in the prior art.

In a first aspect, the present invention provides a user equipment, including:

a receiving module, configured to receive a minimum transmit power parameter value sent by a base station;

a first determining module, configured to determine a minimum transmit power according to the minimum transmit power parameter value;

a second determining module, configured to determine, according to the minimum transmit power, transmit power of a proximity signal sent to an opposite user equipment, where the user equipment transmits the proximity signal at the transmit power, so that the base station can monitor the proximity signal.

With reference to the first aspect, in a possible implementation manner, the first determining module specifically includes:

an obtaining unit, configured to obtain a path loss between the base station and the user equipment, and a number of resource blocks occupied by the proximity signal;

a first determining unit, configured to determine the transmit power according to the minimum transmit power parameter value and a first parameter, where the first parameter includes the path loss and/or the number of resource blocks.

With reference to the first possible implementation manner of the first aspect, in two possible implementation manners, when the first parameter includes the path loss and the number of resource blocks, the first determining unit is specifically configured to:

determining the minimum transmit power parameter value, the first value and the second valueAdding the obtained first sum value as the minimum transmitting power, wherein the first value is alpha_cMultiple of said path loss, α_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight.

With reference to the first possible implementation manner of the first aspect, in three possible implementation manners, when the first parameter includes the path loss and the number of resource blocks, the first determining unit is specifically configured to:

obtaining a maximum power threshold, where the maximum power threshold is configured by the base station, a central control node, or the opposite-end user equipment, or the maximum power threshold is preset by the user equipment;

determining a first sum obtained by adding the minimum transmitting power parameter value, a first numerical value and a second numerical value, wherein the first numerical value is alpha_cMultiple of said path loss, α_cMore than or equal to 0 and less than or equal to 1, wherein the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight;

determining the smaller of the first sum and the maximum power threshold as the minimum transmit power.

With reference to any one of the first to third possible implementation manners of the first aspect, in four possible implementation manners, the second determining module specifically includes:

a second determining unit, configured to determine an expected transmit power between the ue and the peer ue;

and the comparison unit is used for comparing the expected transmitting power with the minimum transmitting power to obtain a comparison result and determining the transmitting power according to the comparison result.

With reference to the fourth possible implementation manner of the first aspect, in five possible implementation manners, the comparing unit is specifically configured to:

comparing the expected transmitting power with the minimum transmitting power to obtain a comparison result;

if the comparison result shows that the expected transmitting power is greater than or equal to the minimum transmitting power, determining the expected transmitting power as the transmitting power;

and if the comparison result shows that the expected transmitting power is smaller than the minimum transmitting power, determining the minimum transmitting power as the transmitting power.

With reference to the fourth possible implementation manner of the first aspect, in six possible implementation manners, the user equipment further includes:

a third determining module, configured to determine a maximum transmit power according to a maximum transmit power parameter value sent by the base station before comparing the expected transmit power with the minimum transmit power to obtain a comparison result;

the comparison unit is specifically configured to: comparing the expected transmitting power with the minimum transmitting power and the maximum transmitting power to obtain a comparison result; if the comparison result shows that the expected transmitting power is greater than or equal to the minimum transmitting power and less than or equal to the maximum transmitting power, determining the expected transmitting power as the transmitting power; if the comparison result shows that the expected transmitting power is smaller than the minimum transmitting power, determining the minimum transmitting power as the transmitting power; and if the comparison result shows that the expected transmitting power is greater than the maximum transmitting power, determining the maximum transmitting power as the transmitting power.

With reference to the sixth possible implementation manner of the first aspect, in seven possible implementation manners, the third determining module is specifically configured to:

and determining the maximum transmitting power according to the maximum transmitting power parameter value and a first parameter, wherein the first parameter comprises the path loss between the base station and the user equipment and/or the number of resource blocks occupied by the proximity signal.

With reference to the seventh possible implementation manner of the first aspect, in eight possible implementation manners, when the first parameter includes the path loss and the number of resource blocks, the third determining module is specifically configured to:

determining a second sum obtained by adding the maximum transmission power parameter value, a third value and a second value as the maximum transmission power, wherein the third value is beta_cMultiple of said path loss, beta_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight.

With reference to the seventh possible implementation manner of the first aspect, in nine possible implementation manners, when the first parameter includes the path loss and the number of resource blocks, the third determining module is specifically configured to:

determining a second sum obtained by adding the maximum transmission power parameter value, a third value and a second value, wherein the third value is beta_cMultiple of said path loss, beta_cMore than or equal to 0 and less than or equal to 1, wherein the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight;

and determining the smaller value of the second sum value and the maximum power threshold value as the maximum transmission power.

In a second aspect, the present invention provides a user equipment, including:

the transceiver is used for receiving the minimum transmitting power parameter value sent by the base station;

a memory for storing transceiving data of the transceiver and system data of the user equipment;

a processor, connected to the transceiver and the memory, for determining a minimum transmit power according to the minimum transmit power parameter value; and determining the transmission power of a proximity signal sent to opposite-end user equipment according to the minimum transmission power, wherein the user equipment transmits the proximity signal at the transmission power, so that the base station can monitor the proximity signal.

With reference to the second aspect, in a possible implementation manner, the processor is specifically configured to:

acquiring the path loss between the base station and the user equipment and the number of resource blocks occupied by the proximity signal;

and determining the transmitting power according to the minimum transmitting power parameter value and a first parameter, wherein the first parameter comprises the path loss and/or the number of the resource blocks.

With reference to the first possible implementation manner of the second aspect, in two possible implementation manners, the processor is specifically configured to:

determining a first sum value obtained by adding the minimum transmission power parameter value, a first numerical value and a second numerical value as the minimum transmission power, wherein the first numerical value is alpha_cMultiple of said path loss, α_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight.

With reference to the first possible implementation manner of the second aspect, in three possible implementation manners, when the first parameter includes the path loss and the number of resource blocks, the processor is specifically configured to:

With reference to any one of the first to third possible implementation manners of the second aspect, in four possible implementation manners, the processor is specifically further configured to:

determining a desired transmit power between the user equipment and the peer user equipment;

and comparing the expected transmitting power with the minimum transmitting power to obtain a comparison result, and determining the transmitting power according to the comparison result.

With reference to the fourth possible implementation manner of the second aspect, in five possible implementation manners, the processor is specifically configured to:

With reference to the fourth possible implementation manner of the second aspect, in six possible implementation manners, the processor is further configured to:

before comparing the expected transmitting power with the minimum transmitting power to obtain a comparison result, determining the maximum transmitting power according to the maximum transmitting power parameter value sent by the base station;

comparing the expected transmitting power with the minimum transmitting power and the maximum transmitting power to obtain a comparison result; if the comparison result shows that the expected transmitting power is greater than or equal to the minimum transmitting power and less than or equal to the maximum transmitting power, determining the expected transmitting power as the transmitting power; if the comparison result shows that the expected transmitting power is smaller than the minimum transmitting power, determining the minimum transmitting power as the transmitting power; and if the comparison result shows that the expected transmitting power is greater than the maximum transmitting power, determining the maximum transmitting power as the transmitting power.

With reference to the sixth possible implementation manner of the second aspect, in seven possible implementation manners, the processor is specifically configured to:

With reference to the seventh possible implementation manner of the second aspect, in eight possible implementation manners, when the first parameter includes the path loss and the number of resource blocks, the processor is specifically configured to:

With reference to the seventh possible implementation manner of the second aspect, in nine possible implementation manners, when the first parameter includes the path loss and the number of resource blocks, the processor is specifically configured to:

In a third aspect, an embodiment of the present invention provides a method for determining transmit power, where the method includes:

the first user equipment receives a minimum transmission power parameter value sent by a base station;

the first user equipment determines the minimum transmitting power according to the minimum transmitting power parameter value;

the first user equipment determines the transmission power of a proximity signal sent to second user equipment according to the minimum transmission power, wherein the first user equipment transmits the proximity signal at the transmission power, so that the base station can monitor the proximity signal.

With reference to the third aspect, in a possible implementation manner, the determining, by the first user equipment, a minimum transmit power according to the minimum transmit power parameter value specifically includes:

acquiring the path loss between the base station and the first user equipment and the number of resource blocks occupied by the proximity signal;

With reference to the first possible implementation manner of the third aspect, in two possible implementation manners, when the first parameter includes the path loss and the number of resource blocks, the determining the transmit power according to the minimum transmit power parameter value and the first parameter specifically includes:

With reference to the second possible implementation manner of the third aspect, in three possible implementation manners, when the first parameter includes the path loss and the number of resource blocks, the determining the transmit power according to the minimum transmit power parameter value and the first parameter specifically includes:

obtaining a maximum power threshold, where the maximum power threshold is configured by the base station, a central control node, or the second user equipment, or the maximum power threshold is preset by the first user equipment;

With reference to any one of the first to third possible implementation manners of the third aspect, in four possible implementation manners, the determining, by the first user equipment, the transmission power of the proximity signal sent to the second user equipment according to the minimum transmission power specifically includes:

determining a desired transmit power between the first user equipment and the second user equipment;

With reference to the fourth possible implementation manner of the third aspect, in five possible implementation manners, the comparing the expected transmit power with the minimum transmit power to obtain a comparison result, and determining the actual transmit power according to the comparison result specifically includes:

With reference to the fourth possible implementation manner of the third aspect, in six possible implementation manners, before comparing the expected transmit power with the minimum transmit power to obtain a comparison result, the method further includes: receiving a maximum transmitting power parameter value sent by the base station, and determining the maximum transmitting power according to the maximum transmitting power parameter value;

comparing the expected transmitting power with the minimum transmitting power to obtain a comparison result, and determining the transmitting power according to the comparison result, which specifically comprises:

comparing the expected transmitting power with the minimum transmitting power and the maximum transmitting power to obtain a comparison result;

if the comparison result shows that the expected transmitting power is greater than or equal to the minimum transmitting power and less than or equal to the maximum transmitting power, determining the expected transmitting power as the transmitting power;

if the comparison result shows that the expected transmitting power is smaller than the minimum transmitting power, determining the minimum transmitting power as the transmitting power;

and if the comparison result shows that the expected transmitting power is greater than the maximum transmitting power, determining the maximum transmitting power as the transmitting power.

With reference to the sixth possible implementation manner of the third aspect, in seven possible implementation manners, the determining a maximum transmission power according to the maximum transmission power parameter value specifically includes:

and determining the maximum transmitting power according to the maximum transmitting power parameter value and a first parameter, wherein the first parameter comprises the path loss between the base station and the first user equipment and/or the number of resource blocks occupied by the approaching signal.

With reference to the seventh possible implementation manner of the third aspect, in eight possible implementation manners, when the first parameter includes the path loss and the number of resource blocks, the transmitting power according to the maximum transmitting power parameter value and the first parameter specifically is:

With reference to the seventh possible implementation manner of the third aspect, in nine possible implementation manners, when the first parameter includes the path loss and the number of resource blocks, the transmitting power according to the maximum transmit power parameter value and the first parameter specifically includes:

In one or more technical solutions of the embodiments of the present application, a minimum transmit power is determined according to a minimum transmit power parameter value issued by a base station by receiving the minimum transmit power parameter value, and a transmit power of a proximity signal to another user equipment is further determined according to the minimum transmit power, where the user equipment transmits the proximity signal with the determined transmit power, so that the base station can monitor the proximity signal transmitted by the user equipment, thereby solving a technical problem that the transmit power of the proximity signal of the user equipment is too low in the prior art, implementing normal reception of the proximity signal by the base station, and ensuring legal monitoring of information transmitted by the UE by the base station.

Drawings

Fig. 1 is a block diagram illustrating a structure of a user equipment according to an embodiment of the present disclosure;

fig. 2 is a block diagram of a user equipment according to a second embodiment of the present application;

fig. 3 is a flowchart illustrating a method for determining transmit power according to a third embodiment of the present application.

Detailed Description

In the technical scheme provided by the embodiment of the application, the minimum transmitting power is determined by receiving the minimum transmitting power parameter value sent by the base station, and the transmitting power of the proximity signal is determined according to the minimum transmitting power, so that the transmitting power of the proximity signal is greater than or equal to the minimum transmitting power, the technical problem that the transmitting power of the proximity signal of the user equipment is too small in the prior art is solved, and the base station can normally receive and monitor the proximity signal.

The main implementation principle, the specific implementation mode and the corresponding beneficial effects of the technical scheme of the embodiment of the present application are explained in detail with reference to the accompanying drawings.

Example one

Referring to fig. 1, the present embodiment provides a user equipment, including:

a receiving module 101, configured to receive a minimum transmit power parameter value sent by a base station;

a first determining module 102, configured to determine a minimum transmit power according to the minimum transmit power parameter value;

a second determining module 103, configured to determine, according to the minimum transmit power, a transmit power of a proximity signal sent to an opposite user equipment, where the user equipment transmits the proximity signal at the transmit power, so that the base station can monitor the proximity signal.

In the specific implementation process, the UE is a UE that sends a proximity signal, and the peer UE is a UE that receives the proximity signal. The proximity signal includes a ProSe discovery signal by which the user equipment identifies an adjacent counterpart user equipment and a ProSe communication signal by which the user equipment communicates withAnd the close opposite user equipment carries out communication. Before the UE transmits the proximity signal, the base station transmits a minimum transmit power parameter value to the UE through a high-layer signaling (e.g., Radio Resource Control (RRC) signaling) or a dynamic signaling (e.g., Physical Downlink Control Channel (PDCCH)) and uses Δ to transmit the minimum transmit power parameter value_{D2D_min，c}The minimum transmit power parameter value is indicated, where the subscript c indicates the serving cell or carrier on which the ProSe signal is located. The ue receives the minimum transmit power parameter value sent by the base station through the receiving module 101, and determines the minimum transmit power according to the minimum transmit power parameter value through the first determining module 102, where P is used_{D2D_min，c}Representing the minimum transmit power.

The first determining module 102 of the user equipment specifically includes: an acquisition unit 21 and a first determination unit 22. The obtaining unit 21 is configured to obtain a path loss between the base station and the user equipment, and a number of resource blocks occupied by the proximity signal. Since the minimum transmit power parameter value is a lower limit power value of a signal that can be normally received by the base station, the minimum transmit power may be equal to the minimum transmit power parameter value sent by the base station in an ideal case. However, in order to ensure the quality of the proximity signal received by the base station, the obtaining unit 21 obtains the path loss of the base station and the number of resource blocks occupied by the proximity signal, so that the first determining unit 22 determines the transmission power of the proximity signal according to the minimum transmission power parameter value and a first parameter, wherein the first parameter includes the path loss of the base station and the user equipment and/or the number of resource blocks occupied by the proximity signal.

Specifically, the first determining unit 22 may determine the minimum transmit power by any one of the following manners:

the first method is as follows: determining the sum of the minimum transmitting power parameter value and the path loss as the minimum transmitting power; or, determining the minimum transmit power parameter value and alpha_cThe sum of the path losses is the minimum transmit power, where_cParameter, alpha, configured for the c-th serving cell or carrier in which the base station receives signals by means of higher layer signaling_cZero or more and 1 or less, and generally a_c∈{0，0.4，0.5，0.6，0.7，0.8，0.9，1}。

The second method comprises the following steps: determining the sum of the minimum transmitting power parameter value and the number of resource blocks as the minimum transmitting power; or, determining the sum of the minimum transmission power parameter value and a second value as the minimum transmission power, wherein the second value is the product of the logarithm of the number of resource blocks with the first weight as the base and the first weight, namely a log_a(M_D2D，c(i) A represents a first weight, M_D2D，c(i) Indicating the number of resource blocks.

The third method comprises the following steps: determining a first sum value obtained by adding the minimum transmission power parameter value, the first numerical value and the second numerical value as the minimum transmission power, wherein the first numerical value is alpha_cMultiple of said path loss, α_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight. For convenience of quantization, the first weight value is usually 10, but the first weight value is not limited to 10 and may also be other values such as 2, 20, etc., and when the first weight value is 10, the minimum transmission power P of the ProSe signal transmitted on the ith subframe of the c-th serving cell or carrier may be determined by the following formula_{D2D_min，c}(i)：

P_{D2D_min，c}(i)＝10log₁₀(M_D2D，c(i))+α_cPL_c+Δ_{D2D_min，c}

Wherein M is_D2D，c(i) Indicating the number of resource blocks, PL, occupied by ProSe signals transmitted on the i-th subframe of the c-th serving cell or carrier_cIs the path loss, α, between the base station and the user equipment on the c-th serving cell or carrier_cParameters, typically alpha, configured for the base station for the c-th serving cell or carrier by higher layer signaling_c∈{0，0.4，0.5，0.6，0.7，0.8，0.9，1}。P_{D2D_min，c}(i) Has the unit dBm when P_{D2D_min，c}(i)＝-∞[dBm]Then, the minimum transmit power of the ProSe signal transmitted on the ith subframe of the c serving cell or carrier is 0; when P is present_{D2D_min，c}(i)＝+∞[dBm]Minimum transmit power of ProSe signals transmitted on ith subframe of the c serving cell or carrierIs infinite.

The method is as follows: obtaining a maximum power threshold value P configured by a base station, a central control node or opposite end user equipment_max，cOr a maximum power threshold P preset by the ue_max，c. Determining a first sum value obtained by adding the minimum transmitting power parameter value, a first numerical value and a second numerical value, wherein the first numerical value is alpha_cMultiple path loss, α_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight. And determining the first sum value and acquiring the maximum power threshold value in no sequence. After the first sum and the maximum power threshold are determined, if the first weight is 10, determining that the smaller value of the first sum and the maximum power threshold is the minimum transmitting power through the following formula:

P_{D2D_min，c}(i)＝min{P_max，c，10log₁₀(M_D2D，c(i))+α_cPL_c+Δ_{D2D_min，c}}

when 10log₁₀(M_D2D，c(i))+α_cPL_c+Δ_{D2D_min，c}When the minimum transmission power is plus infinity, the minimum transmission power of the ProSe signal transmitted on the ith subframe of the c serving cell or carrier is P_max，c。

The fifth mode is as follows: determining the sum of the minimum transmitting power parameter value, the first value, the second value and the interference parameter value as the minimum transmitting power, wherein the first value is alpha_cMultiple of said path loss, α_cMore than or equal to 0 and less than or equal to 1, the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight, and the interference parameter value is the interference strength existing between the base station and the user equipment.

After the minimum transmission power is determined in any of the above manners, the user equipment may determine, by using the second determining module 103, the transmission power of the proximity signal sent to the opposite-end user equipment according to the minimum transmission power, so that the transmission power is greater than or equal to the minimum transmission power. Specifically, the second determining module 103 includes a second determining unit 31 and a comparing unit 32, where the second determining unit 31 is configured to determine an expected transmit power between the ue and the peer ue; the comparing unit 32 is configured to compare the expected transmit power with the minimum transmit power to obtain a comparison result, and determine the transmit power according to the obtained comparison result.

The comparing unit 32 may directly compare the expected transmit power with the minimum transmit power to obtain a comparison result, and if the comparison result indicates that the expected transmit power is greater than or equal to the minimum transmit power, determine that the expected transmit power is the transmit power; and if the comparison result shows that the expected transmission power is less than the minimum transmission power, determining the minimum transmission power as the transmission power. The determination of the transmit power is formulated as follows:

P_D2D，c(i)＝max{P_{D2D_expect，c}(i)，P_{D2D_min，c}(i)}

wherein, P_D2D，c(i) Denotes the transmit power, P, of the ProSe signal sent on the i subframe of the c serving cell or carrier_{D2D_expect，c}(i) Represents the expected transmit power of the ProSe signal transmitted on the ith subframe of the c-th serving cell or carrier.

The comparing unit 32 may also determine the expected transmission power as the transmission power when the comparison result indicates that the expected transmission power is greater than or equal to the minimum transmission power; and when the comparison result shows that the expected transmission power is less than the minimum transmission power, determining that the transmission power is invalid and not transmitting the proximity signal. By the mode, the transmitting power determined by the user equipment is greater than or equal to the minimum transmitting power, so that the base station can normally receive the approach signal transmitted by the user equipment, and the legal monitoring of the base station on the information transmitted by the user equipment is ensured.

In a specific implementation process, the second determining unit 31 may determine the expected transmit power between the user equipment and the peer device according to any one of the following formulas:

(1)、P_{D2D_expect，c}(i)＝10log₁₀(M_D2D，c(i))+α_D2D，cPL_D2D，c+Δ_{D2D_expect，c}

wherein M is_D2D，c(i) Indicates in the c-th serving cellOr the number of resource blocks occupied by the ProSe signal sent on the ith subframe of the carrier; alpha is alpha_D2D，cConfigured for a base station or a central control node, or informed by an opposite user equipment receiving a ProSe signal, or predefined parameter of the c-th serving cell or carrier, generally alpha_D2D，c∈{0，0.4，0.5，0.6，0.7，0.8，0.9，1}；PL_D2D，cIs the path loss between the user equipment receiving the ProSe signal on the c-th serving cell or carrier and the user equipment transmitting the ProSe signal; delta_{D2D_expect，c}And the power adjustment parameters are configured for the base station or the central control node, or are notified by the user equipment receiving the ProSe signals, or are predefined by the user equipment sending the ProSe signals.

(2)、P_{D2D_expect，c}(i)＝min{P_max，c，10log₁₀(M_D2D，c(i))+α_D2D，cPL_D2D，c+Δ_{D2D_expect，c}}

Wherein, P_max，cA maximum power threshold value which is configured for a base station or a central control node, or is notified by an opposite user equipment receiving the ProSe signal, or is predefined by the user equipment sending the ProSe signal.

In a specific implementation process, the user equipment provided in this embodiment of the application further includes a third determining module 104, configured to determine the maximum transmit power according to the maximum transmit power parameter value sent by the base station before the comparing unit 32 compares the expected transmit power with the minimum transmit power to obtain a comparison result. The base station transmits the maximum transmission power parameter value to the ue through a high layer signaling (e.g. Radio Resource Control (RRC) signaling) or a dynamic signaling (e.g. Physical downlink Control (PDCCH)) and uses Δ to transmit the maximum transmission power parameter value_{D2D_max，c}The maximum transmit power parameter value is indicated, where the subscript c indicates the serving cell or carrier on which the ProSe signal is located. After receiving the maximum transmission power parameter value, the receiving module 101 of the ue transmits the maximum transmission power parameter value to the third determining module 104 through the network interface, and the third determining module 104 determines the maximum transmission power according to the maximum transmission power parameter value and a first parameter, where the first parameter includes a path between the base station and the ueLoss and/or the number of resource blocks occupied by the approaching signal.

Specifically, the third determining module 104 may determine the maximum transmission power by any one of the following methods:

the first method is as follows: determining the sum of the maximum transmitting power parameter value and the path loss as the maximum transmitting power; or, determining the maximum transmission power parameter value and alpha_cThe sum of the path losses is the maximum transmission power, where_cParameter, alpha, configured for the c-th serving cell or carrier in which the base station receives signals by means of higher layer signaling_cZero or more and 1 or less, and generally a_c∈{0，0.4，0.5，0.6，0.7，0.8，0.9，1}。

The second method comprises the following steps: determining the sum of the maximum transmitting power parameter value and the number of the resource blocks as the maximum transmitting power; or, determining the sum of the maximum transmission power parameter value and a second value as the maximum transmission power, wherein the second value is the product of the logarithm of the number of resource blocks with the first weight as the base and the first weight, namely a log_a(M_D2D，c(i) A represents a first weight, M_D2D，c(i) Indicating the number of resource blocks.

The third method comprises the following steps: determining a second sum value obtained by adding the maximum transmission power parameter value, the first value and the second value as the maximum transmission power, wherein the first value is alpha_cMultiple of said path loss, α_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight. For convenience of quantization, the first weight value is usually 10, but the first weight value is not limited to 10 and may be other values such as 2, 8, 16, etc., and when the first weight value is 10, the maximum transmission power P of the ProSe signal transmitted on the ith subframe of the c-th serving cell or carrier may be determined by the following formula_{D2D_max，c}(i)：

P_{D2D_max，c}(i)＝10log₁₀(M_D2D，c(i))+α_cPL_c+Δ_{D2D_max，c}

Wherein M is_D2D，c(i) Indicating transmission on the ith subframe of the c-th serving cell or carrierNumber of resource blocks occupied by the ProSe signal of (1), PL_cIs the path loss, α, between the base station and the user equipment on the c-th serving cell or carrier_cParameters, typically alpha, configured for the base station for the c-th serving cell or carrier by higher layer signaling_c∈{0，0.4，0.5，0.6，0.7，0.8，0.9，1}。P_{D2D_max，c}(i) Has the unit dBm when P_{D2D_max，c}(i)＝-∞[dBm]Then, the minimum transmit power of the ProSe signal transmitted on the ith subframe of the c serving cell or carrier is 0; when P is present_{D2D_max，c}(i)＝+∞[dBm]The maximum transmit power of the ProSe signal transmitted on the ith subframe of the c-th serving cell or carrier is infinite.

The method is as follows: and acquiring a maximum power threshold configured by the base station, the central control node or the opposite-end user equipment, or a maximum power threshold preset by the user equipment. Determining a second sum obtained by adding the maximum transmitting power parameter value, a first value and a second value, wherein the first value is alpha_cMultiple path loss, α_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight. And determining the second sum value and acquiring the maximum power threshold value in no sequence. After the second sum and the maximum power threshold are determined, if the first weight is 10, determining that the smaller value of the second sum and the maximum power threshold is the maximum transmitting power through the following formula:

P_{D2D_max，c}(i)＝min{P_max，c，10log₁₀(M_D2D，c(i))+α_cPL_c+Δ_{D2D_max，c}}

wherein P is_max，cRepresenting the maximum power threshold. When 10log₁₀(M_D2D，c(i))+α_cPL_c+Δ_{D2D_max，c}When the maximum transmission power is plus infinity, the maximum transmission power of the ProSe signal transmitted on the ith subframe of the c serving cell or carrier is P_max，c。

The fifth mode is as follows: determining the sum of the maximum transmission power parameter value, the first value, the second value and the interference parameter value as the maximum transmission powerIn the first value is alpha_cMultiple of said path loss, α_cMore than or equal to 0 and less than or equal to 1, the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight, and the interference parameter value is the interference strength existing between the base station and the user equipment.

It should be noted that the minimum transmit power of the ProSe signal is not greater than the maximum transmit power of the ProSe signal, or the minimum transmit power parameter value is not greater than the maximum transmit power parameter value.

After determining the maximum transmission power in any of the above manners, the comparing unit 32 determines the transmission power of the proximity signal of the user equipment according to the minimum transmission power and the expected transmission power, and specifically may: comparing the expected transmitting power with the numerical values of the minimum transmitting power and the maximum transmitting power to obtain a comparison result; if the comparison result shows that the expected transmitting power is greater than or equal to the minimum transmitting power and less than or equal to the maximum transmitting power, determining the expected transmitting power as the transmitting power; if the comparison result shows that the expected transmitting power is smaller than the minimum transmitting power, determining the minimum transmitting power as the transmitting power; and if the comparison result shows that the expected transmitting power is greater than the maximum transmitting power, determining the maximum transmitting power as the transmitting power. Taking the first weight equal to 10 as an example, the method for determining the transmission power of the proximity signal sent by the user equipment to the opposite user equipment is expressed by the following formula:

P_D2D，c(i)＝min{max{P_{D2D_expect，c}(i)，P_{D2D_min，c}(i)}，P_{D2D_max，c}(i)}

or,

P_D2D，c(i)＝max{min{P_{D2D_expect，c}(i)，P_{D2D_max，c}(i)}，P_{D2D_min，c}(i)}

wherein, P_D2D，c(i) Represents a transmit power of a ProSe signal transmitted on an i-th subframe of a c-th serving cell or carrier; p_{D2D_expect，c}(i) Represents a desired transmit power of a ProSe signal transmitted on an i-th subframe of a c-th serving cell or carrier; p_{D2D_min，c}(i) Indicating at the c-th serviceMinimum transmit power of ProSe signal sent on ith subframe of cell or carrier; p_{D2D_max，c}(i) Represents the maximum transmit power of the ProSe signal transmitted on the ith subframe of the c-th serving cell or carrier.

The comparing unit 32 compares the expected transmission power with the minimum transmission power and the maximum transmission power, determines the transmission power according to the comparison result after obtaining the comparison result, and may also determine the expected transmission power as the transmission power when the comparison result indicates that the expected transmission power is greater than or equal to the minimum transmission power and less than or equal to the maximum transmission power; when the comparison result shows that the expected transmitting power is smaller than the minimum transmitting power, determining that the transmitting power of the proximity signal is invalid and not transmitting the proximity signal; similarly, when the comparison result shows that the expected transmission power is greater than the maximum transmission power, the transmission power of the proximity signal is determined to be invalid, and the proximity signal is not transmitted.

Therefore, when determining the transmission power of the proximity signal sent by the user equipment, the embodiment of the application determines the transmission power which is greater than or equal to the minimum transmission power and less than or equal to the maximum transmission power according to not only the minimum transmission power parameter value sent by the base station but also the maximum transmission power parameter value sent by the base station, so that the proximity signal sent by the user equipment can be correctly received by the base station, and the interference of the proximity signal to the base station or other base stations to which the proximity signal belongs can be effectively avoided.

Example two

Referring to fig. 2, an embodiment of the present invention provides a ue, where the ue includes:

a transceiver 201, configured to receive a minimum transmit power parameter value sent by a base station;

a memory 202 for storing transceiving data of the transceiver and system data of the user equipment;

a processor 203, connected to the transceiver and the memory, for determining a minimum transmit power according to the minimum transmit power parameter value; and determining the transmission power of a proximity signal sent to opposite-end user equipment according to the minimum transmission power, wherein the user equipment transmits the proximity signal at the transmission power, so that the base station can monitor the proximity signal.

In a specific implementation process, the processor 203 is specifically configured to: acquiring the path loss between the base station and the user equipment and the number of resource blocks occupied by the proximity signal; and determining the transmitting power according to the minimum transmitting power parameter value and a first parameter, wherein the first parameter comprises the path loss and/or the number of the resource blocks.

The processor 203 determines the transmit power according to the minimum transmit power parameter value and the first parameter, and may specifically select any one of the following manners:

the first method is as follows: when the first parameter includes the path loss and the number of resource blocks, determining that a first sum obtained by adding the minimum transmission power parameter value, a first numerical value and a second numerical value is the minimum transmission power, wherein the first numerical value is alpha_cMultiple of said path loss, α_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight.

The second method comprises the following steps: when the first parameter includes the path loss and the number of resource blocks, the processor is specifically configured to: obtaining a maximum power threshold, where the maximum power threshold is configured by the base station, a central control node, or the opposite-end user equipment, or the maximum power threshold is preset by the user equipment; determining a first sum obtained by adding the minimum transmitting power parameter value, a first numerical value and a second numerical value, wherein the first numerical value is alpha_cMultiple of said path loss, α_cMore than or equal to 0 and less than or equal to 1, wherein the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight; determining the smaller of the first sum and the maximum power threshold as the minimum transmit power.

In a specific implementation process, when determining the transmission power according to the minimum transmission power, the processor 203 may first determine an expected transmission power between the ue and the peer ue; then, the expected transmitting power is compared with the minimum transmitting power to obtain a comparison result, and the transmitting power is determined according to the comparison result.

Specifically, the processor 203 may directly compare the expected transmit power with the minimum transmit power to obtain the comparison result; if the comparison result shows that the expected transmitting power is greater than or equal to the minimum transmitting power, determining the expected transmitting power as the transmitting power; and if the comparison result shows that the expected transmitting power is smaller than the minimum transmitting power, determining the minimum transmitting power as the transmitting power. The processor 203 may further determine a maximum transmit power according to a maximum transmit power parameter value sent by the base station before comparing the expected transmit power with the minimum transmit power to obtain a comparison result; comparing the expected transmitting power with the minimum transmitting power and the maximum transmitting power to obtain a comparison result; if the comparison result shows that the expected transmitting power is greater than or equal to the minimum transmitting power and less than or equal to the maximum transmitting power, determining the expected transmitting power as the transmitting power; if the comparison result shows that the expected transmitting power is smaller than the minimum transmitting power, determining the minimum transmitting power as the transmitting power; and if the comparison result shows that the expected transmitting power is greater than the maximum transmitting power, determining the maximum transmitting power as the transmitting power.

In particular implementation, processor 203 may determine the maximum transmit power by:

and determining the maximum transmitting power according to the maximum transmitting power parameter value and a first parameter, wherein the first parameter comprises the path loss between the base station and the user equipment and/or the number of resource blocks occupied by the proximity signal. When the first parameter includes the path loss and the number of resource blocks, the processor 203 may specifically determine that a second sum obtained by adding the maximum transmission power parameter value, a third value and a second value is the maximum transmission power, where the third value is β_cMultiple of said path loss, beta_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight. Or, when the first parameter includes the path loss and the number of resource blocks, the processor 203 may also obtain a maximum power threshold, where the maximum power threshold is configured by the base station, the central control node, or the peer ue, or the maximum power threshold is preset by the ue; determining a second sum obtained by adding the maximum transmission power parameter value, a third value and a second value, wherein the third value is beta_cMultiple of said path loss, beta_cMore than or equal to 0 and less than or equal to 1, wherein the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight; and determining the smaller value of the second sum value and the maximum power threshold value as the maximum transmission power.

Various changes and specific examples of the functional module and the work engineering of the ue in the first embodiment are also applicable to the ue in this embodiment, and a person skilled in the art can clearly know the implementation method of the ue in this embodiment through the detailed description of the functional module and the work process of the ue, so that the detailed description is omitted here for the sake of brevity of the description.

In this embodiment, when determining the transmission power of the proximity signal, the user equipment determines, according to not only the minimum transmission power parameter value sent by the base station, but also the maximum transmission power parameter value sent by the base station, the transmission power that is greater than or equal to the minimum transmission power and less than or equal to the maximum transmission power, so that the proximity signal sent by the user equipment can be correctly received by the base station, and interference of the proximity signal on the base station to which the user equipment belongs or on signals received by other base stations can be effectively avoided.

EXAMPLE III

Referring to fig. 3, an embodiment of the present application provides a method for determining a transmit power, including:

s301: the first user equipment receives a minimum transmission power parameter value sent by a base station;

s302: the first user equipment determines the minimum transmitting power according to the minimum transmitting power parameter value;

s303: the first user equipment determines the transmission power of a proximity signal sent to second user equipment according to the minimum transmission power, wherein the first user equipment transmits the proximity signal at the transmission power, so that the base station can monitor the proximity signal.

In a specific implementation process, the S302 determining, by the first user equipment, a minimum transmit power according to the minimum transmit power parameter value specifically includes: acquiring the path loss between the base station and the first user equipment and the number of resource blocks occupied by the proximity signal; and determining the transmitting power according to the minimum transmitting power parameter value and a first parameter, wherein the first parameter comprises the path loss and/or the number of the resource blocks.

When the first parameter includes the path loss and the number of resource blocks, S302 determines the transmit power according to the minimum transmit power parameter value and the first parameter, and specifically may determine that a first sum obtained by adding the minimum transmit power parameter value, a first numerical value and a second numerical value is the minimum transmit power, where the first numerical value is α_cMultiple of said path loss, α_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight.

When the first parameter includes the path loss and the number of resource blocks, S302 determines the transmit power according to the minimum transmit power parameter value and the first parameter, and specifically may also: obtaining a maximum power threshold, where the maximum power threshold is configured by the base station, a central control node, or the second user equipment, or the maximum power threshold is preset by the first user equipment; determining a first sum obtained by adding the minimum transmitting power parameter value, a first numerical value and a second numerical value, wherein the first numerical value is alpha_cMultiple of said path loss, α_cGreater than or equal to 0 and less than or equal to 1, the second value being the first weightThe product of the logarithm of the number of the resource blocks and the first weight; determining the smaller of the first sum and the maximum power threshold as the minimum transmit power.

In a specific implementation process, S303 the first user equipment determines, according to the minimum transmit power, transmit power of a proximity signal sent to the second user equipment, which specifically includes: determining a desired transmit power between the first user equipment and the second user equipment; then, the expected transmitting power is compared with the minimum transmitting power to obtain a comparison result, and the transmitting power is determined according to the comparison result.

Wherein, comparing the expected transmitting power with the minimum transmitting power to obtain a comparison result, and determining the actual transmitting power according to the comparison result specifically comprises: comparing the expected transmitting power with the minimum transmitting power to obtain a comparison result; if the comparison result shows that the expected transmitting power is greater than or equal to the minimum transmitting power, determining the expected transmitting power as the transmitting power; and if the comparison result shows that the expected transmitting power is smaller than the minimum transmitting power, determining the minimum transmitting power as the transmitting power.

Before comparing the expected transmission power with the minimum transmission power to obtain a comparison result, the user equipment may further receive a maximum transmission power parameter value sent by the base station, and determine the maximum transmission power according to the maximum transmission power parameter value; at this time, comparing the expected transmission power with the minimum transmission power to obtain a comparison result, and determining the transmission power according to the comparison result, specifically including: comparing the expected transmitting power with the minimum transmitting power and the maximum transmitting power to obtain a comparison result; if the comparison result shows that the expected transmitting power is greater than or equal to the minimum transmitting power and less than or equal to the maximum transmitting power, determining the expected transmitting power as the transmitting power; if the comparison result shows that the expected transmitting power is smaller than the minimum transmitting power, determining the minimum transmitting power as the transmitting power; and if the comparison result shows that the expected transmitting power is greater than the maximum transmitting power, determining the maximum transmitting power as the transmitting power.

In a specific implementation process, the first user equipment determines the maximum transmission power according to the maximum transmission power parameter value, and may determine the maximum transmission power according to the maximum transmission power parameter value and a first parameter, where the first parameter includes a path loss between the base station and the first user equipment and/or a number of resource blocks occupied by the proximity signal. Specifically, the first ue may determine that a second sum obtained by adding the maximum transmit power parameter value, a third value and a second value is the maximum transmit power, where the third value is β_cMultiple of said path loss, beta_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight. When the first parameter includes the path loss and the number of resource blocks, the first user equipment may also obtain a maximum power threshold, where the maximum power threshold is configured by the base station, the central control node, or the second user equipment, or the maximum power threshold is preset by the first user equipment; and determining a second sum obtained by adding the maximum transmission power parameter value, a third value and a second value, wherein the third value is beta_cMultiple of said path loss, beta_cMore than or equal to 0 and less than or equal to 1, wherein the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight; and finally, determining the smaller value of the second sum value and the maximum power threshold value as the maximum transmission power.

The user equipment in the foregoing first embodiment is a device embodiment corresponding to the method for determining transmit power in this embodiment, and various variations and specific examples of the functional module and the working engineering of the user equipment in the foregoing first embodiment are also applicable to the method in this embodiment.

One or more technical solutions in the embodiments of the present invention at least have the following technical effects:

the method comprises the steps of receiving a minimum transmitting power parameter value sent by a base station, determining the minimum transmitting power according to the minimum transmitting power parameter value, and further determining the transmitting power for sending a proximity signal to another user equipment according to the minimum transmitting power, so that the base station can monitor the proximity signal sent by the user equipment, the technical problem that the transmitting power of the proximity signal of the user equipment is too low in the prior art is solved, the base station can normally receive the proximity signal, and the base station can be guaranteed to legally monitor information sent by the UE.

The transmitting power which is more than or equal to the minimum transmitting power and less than or equal to the maximum transmitting power is determined according to the minimum transmitting power parameter value and the maximum transmitting power parameter value which are sent by the base station, so that the approach signal sent by the user equipment can be correctly received by the base station, and the interference of the approach signal to the receiving signal of the base station or other base stations can be effectively avoided.

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

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

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

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

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

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

Claims

1. A user equipment, the user equipment comprising:

a second determining module, configured to determine, according to the minimum transmit power, transmit power of a proximity signal sent to an opposite-end user equipment, where the user equipment transmits the proximity signal at the determined transmit power of the proximity signal, so that the base station can monitor the proximity signal.

2. The user equipment according to claim 1, wherein the first determining module specifically includes:

3. The ue of claim 2, wherein when the first parameter includes the pathloss and the number of resource blocks, the first determining unit is specifically configured to:

4. The ue of claim 2, wherein when the first parameter includes the pathloss and the number of resource blocks, the first determining unit is specifically configured to:

5. The UE of any one of claims 1 to 4, wherein the second determining module specifically comprises:

6. The user equipment of claim 5, wherein the comparing unit is specifically configured to:

7. The user device of claim 5, wherein the user device further comprises:

8. The user equipment of claim 7, wherein the third determining module is specifically configured to:

9. The ue of claim 8, wherein when the first parameter includes the pathloss and the number of resource blocks, the third determining module is specifically configured to:

10. The ue of claim 8, wherein when the first parameter includes the pathloss and the number of resource blocks, the third determining module is specifically configured to:

11. A user equipment, the user equipment comprising:

a processor, connected to the transceiver and the memory, for determining a minimum transmit power according to the minimum transmit power parameter value; and determining the transmission power of the proximity signal sent to the opposite-end user equipment according to the minimum transmission power, wherein the user equipment transmits the proximity signal with the determined transmission power of the proximity signal, so that the base station can monitor the proximity signal.

12. The user equipment of claim 11, wherein the processor is specifically configured to:

13. The user equipment of claim 12, wherein the processor is specifically configured to:

14. The user equipment of claim 12, wherein when the first parameter comprises the path loss and the number of resource blocks, the processor is specifically configured to:

15. The user equipment of any one of claims 11-14, wherein the processor is further specifically configured to:

16. The user equipment of claim 15, wherein the processor is specifically configured to:

17. The user device of claim 15, wherein the processor is further configured to:

18. The user equipment of claim 17, wherein the processor is specifically configured to:

19. The user equipment of claim 18, wherein when the first parameter comprises the path loss and the number of resource blocks, the processor is specifically configured to:

20. The user equipment of claim 18, wherein when the first parameter comprises the path loss and the number of resource blocks, the processor is specifically configured to:

21. A method of determining transmit power, the method comprising:

and the first user equipment determines the transmission power of the proximity signal sent to the second user equipment according to the minimum transmission power, wherein the first user equipment transmits the proximity signal at the determined transmission power of the proximity signal, so that the base station can monitor the proximity signal.

22. The method of claim 21, wherein the determining, by the first user equipment, the minimum transmit power according to the minimum transmit power parameter value specifically comprises:

23. The method according to claim 22, wherein when the first parameter includes the path loss and the number of resource blocks, the determining the transmission power according to the minimum transmission power parameter value and the first parameter specifically comprises:

24. The method of claim 22, wherein when the first parameter includes the path loss and the number of resource blocks, the determining the transmit power according to the minimum transmit power parameter value and the first parameter specifically comprises:

25. The method according to any of claims 21-24, wherein the determining, by the first ue, the transmit power of the proximity signal sent to the second ue according to the minimum transmit power comprises:

26. The method of claim 25, wherein said comparing said desired transmit power to said minimum transmit power to obtain a comparison result and determining said transmit power based on said comparison result comprises:

27. The method of claim 25, wherein prior to comparing the desired transmit power to the minimum transmit power to obtain a comparison, the method further comprises: receiving a maximum transmitting power parameter value sent by the base station, and determining the maximum transmitting power according to the maximum transmitting power parameter value;

28. The method of claim 27, wherein the determining a maximum transmit power according to the maximum transmit power parameter value comprises:

29. The method according to claim 28, wherein when the first parameter includes the path loss and the number of resource blocks, the step of transmitting the transmit power according to the maximum transmit power parameter value and the first parameter specifically comprises:

determining the maximum transmit power parameterThe second sum obtained by adding the value, the third value and the second value is the maximum transmitting power, wherein the third value is beta_cMultiple of said path loss, beta_cMore than or equal to 0 and less than or equal to 1, and the second value is the product of the logarithm of the number of the resource blocks with the first weight as the base and the first weight.

30. The method of claim 28, wherein when the first parameter includes the path loss and the number of resource blocks, the step of transmitting the transmit power according to the maximum transmit power parameter value and the first parameter specifically comprises: