WO2014100952A1

WO2014100952A1 - Method and user equipment for mobile communication

Info

Publication number: WO2014100952A1
Application number: PCT/CN2012/087334
Authority: WO
Inventors: 陈宝军
Original assignee: 华为技术有限公司
Priority date: 2012-12-24
Filing date: 2012-12-24
Publication date: 2014-07-03
Also published as: CN104798407A; CN104798407B

Abstract

Disclosed are a method and user equipment (UE) for mobile communication that allow for as accurate as possible transmission power of an initial transmission frame when the UE is communicating with a base station on a physical uplink shared channel (PUSCH), hence even when the UE selects a reduced modulation and coding scheme (MCS), the transmission power of the UE can still be increased, thus reducing the bit error rate on the PUSCH, and when the UE selects an increased MCS, the transmission power of the UE can still be reduced, thus reducing power wastage and interferences to a same-frequency adjacent cell. The method comprises: when the UE is communicating with the base station on the PUSCH, configuring a power compensation value related to the MCS of the initial transmission frame as a first compensation value; acquiring, on the basis of the first compensation value, the transmission power of the initial transmission frame when the UE is communicating on the PUSCH of a serving cell; and, at the transmission power, transmitting data and/or a signaling to the base station via the initial transmission frame of the PUSCH. The present invention is applicable in the field of communications.

Description

Method and user equipment for mobile communication

The present invention relates to the field of communications, and in particular, to a method and user equipment for mobile communication.

Background technique

In the uplink of the Long Term Evolution (LTE) system, after the user equipment UE (User Equipment) accesses the network side, it is required to determine a physical layer control channel PUCCH (Physical Uplink Control Channel), and a physical layer shared channel PUSCH ( Physical Uplink Shared Channel) and the transmit power value of the Sounding Reference Signal, so that the power of the signal when it arrives at the base station is within the range suitable for reception.

In the prior art, after the UE accesses the network side, the base station selects the modulation and coding mode MCS for the UE in two ways: one is that the base station selects a fixed MCS for all served UEs; the other is the base station for each The UEs of the service adaptively select the MCS.

The UE determines a manner in which the base station selects a fixed MCS for all serving UEs when the PUSCH transmits the transmit power of the initial transmission frame with the base station, and the base station satisfies the signal quality of all served UEs on the initial transmission frame. The base station selects a lower MCS for the MCS demodulation requirement, so that the UE's transmit power is low, resulting in a high bit error rate on the PUSCH.

Determining, by the UE, the manner in which the base station adaptively selects the MCS for each serving UE when the PUSCH transmits the transmit power of the initial transmission frame with the base station, and when the channel quality is sufficiently poor, the base station selects a lower MCS, so that the base station selects a lower MCS. The UE's transmit power is low, resulting in a high bit error rate on the PUSCH. When the channel quality is good enough, the base station selects a higher MCS, so that the UE's transmit power is too high, resulting in wasted power and The frequency neighboring area causes stronger interference.

Summary of the invention

Embodiments of the present invention provide a method and user equipment for mobile communication, which enable a transmission power of an initial transmission frame when a UE communicates with a base station on a PUSCH as much as possible. Accurate, even when the MCS selected by the UE is small, the transmission power of the UE can be improved, thereby reducing the error rate on the PUSCH; even when the MCS selected by the UE is high, the transmission power of the UE can be reduced, thereby reducing the power. Waste and interference with co-frequency neighbors. To achieve the above objective, the embodiment of the present invention uses the following technical solution: In a first aspect, a method for mobile communication is provided, where the method includes: when a user equipment UE communicates with a base station on a physical uplink shared channel PUSCH, The relevant power compensation value of the modulation coding mode MCS of the initial transmission frame is a first compensation value, so that the transmission power of the initial transmission frame when the UE performs communication on the PUSCH is less affected by the MCS;

Obtaining, according to the first compensation value, a transmit power of an initial frame when the UE communicates in a PUSCH of a serving cell;

Data and/or signaling is transmitted to the base station over the initial transmission frame of the PUSCH at the transmit power. In a first possible implementation manner, according to the first aspect, the first compensation value is zero.

In a second possible implementation manner, according to the first aspect, the first compensation value is:

Δ' ^101ο ₂ calendar for ^ =1.25

0, for K =0 where BPRE represents the number of bits transmitted on each resource symbol; ^ represents the number of bits transmitted on each resource symbol on the initial frame when the UE communicates with the base station on the PUSCH; When transmitting through the PUSCH and no data is transmitted on the PUSCH, Ρ is equal to ^ where the power offset value of the control signaling relative to the data is indicated. In other cases, ^β ' is equal to 1; indicating the cell common parameter.

In a third possible implementation manner, according to the second possible implementation manner, when the control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, the first compensation value is: ^Δ '^('') = ¹⁽⁾ 1^. 1⁄2^) _; When there is data transmitted on the PUSCH, the first compensation value is zero. In a fourth possible implementation, after the data and/or signaling is transmitted to the base station by using the initial transmission frame of the PUSCH by using the transmit power, the method further includes:

When the UE communicates with the base station on the PUSCH, setting a related power compensation value of the MCS of the subframe other than the initial transmission frame to the first compensation value;

Acquiring, according to the first compensation value, a transmit power of a subframe other than the initial frame when the UE communicates in the PUSCH of the serving cell;

At the transmit power, data and/or signaling is transmitted to the base station through subframes other than the initial frame of the PUSCH.

In a fifth possible implementation manner, according to the fourth possible implementation manner, acquiring, according to the first compensation value, an initial frame that is sent by the UE when the PUSCH is in communication, and a subframe that is sent outside the initial frame. The power specifically includes:

When the PUSCH is not transmitted simultaneously with the PUCCH, the transmit power of the subframe i of the UE when communicating on the PUSCH is:

^PpuscH - ⁽ = ^min {io io _gl0 ( (0) + Po_ _P c (j + ^a , ( ) . ^PL , + ('■) + (i)} ^[dBm . where C denotes a serving cell; ^ denotes UE Maximum transmit power value;

^ PUSCH Mi) ^ shows the transmission bandwidth allocated by the base station to the UE, that is, the number of resources; ^P 0 - ΗΛΓ > represents the target power value, that is, the power value that the base station wants to receive the signal; ^ρ represents the downlink path loss; ^a represents the downlink path loss Compensation factor; W represents power adjustment state; ( ⁱ⁾ power compensation value indicating modulation coding mode; and/or

When the PUSCH and the PUCCH are simultaneously transmitted, the transmit power of the i-th subframe when the UE performs communication on the PUSCH is:

P (f) = min J PCMAX'C ( ⁷ )― Ppuccu , _c ( ⁷ ),

[10 log ₁₀ (M _mc (0) + P ₀ _ _PUSCH , (j) + _c (j) - PL _c +A ^( + ( J ^LJ . where Μ4 Λ0 represents the maximum transmit power value of the UE; ^p pu ; shows the transmit power value of PUCCH; the definitions of ^M PUSCH, c(i), ^P 0_PUSCH, c( j), ^PL c, « _C '), f ) and ^ TF ) are the same as when PUSCH is not transmitted simultaneously with PUCCH . In a second aspect, a user equipment is provided, where the user equipment includes: a setting unit, an obtaining unit, and a sending unit;

The setting unit is configured to: when the user equipment UE communicates with the base station on the physical uplink shared channel PUSCH, set a correlation power compensation value of the modulation coding mode MCS of the initial transmission frame to a first compensation value, so that the UE is in the PUSCH. The transmitting power of the initial transmission frame when the communication is performed is less affected by the MCS; the acquiring unit is configured to acquire, according to the first compensation value, the transmit power of the initial transmission frame when the UE performs communication on the PUSCH of the serving cell according to the first compensation value. The sending unit is configured to transmit data and/or signaling to the base station by using the initial transmission frame of the PUSCH by using the transmit power.

In a first possible implementation manner, according to the second aspect, the first compensation value is zero.

In a second possible implementation manner, according to the second aspect, the first compensation value is:

Δ' ^101ο ₂ calendar for ^ =1.25

0, for K =0 where BPRE represents the number of bits transmitted on each resource symbol; ^ represents the number of bits transmitted on each resource symbol on the initial frame when the UE communicates with the base station on the PUSCH; When transmitting through the PUSCH and no data is transmitted on the PUSCH, ¹⁵ is equal to, indicating the power offset value of the control signaling relative to the data. In other cases, ^β ' is equal to 1; indicating the cell shared parameter. In a third possible implementation manner, according to the second possible implementation manner, when the control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, the first compensation value is: ^Δ '^('') = ¹⁽⁾ 1^. 1⁄2^) _; When there is data transmitted on the PUSCH, the first compensation value is zero.

In a fourth possible implementation manner, according to the second possible implementation manner, the setting unit is further configured to: when the UE communicates with the base station on the PUSCH, set the MCS of the subframe other than the initial transmission frame. The relevant power compensation value is the first compensation Value

The acquiring unit is further configured to acquire, according to the first compensation value, a transmit power of a subframe other than the initial frame when the UE performs communication on the PUSCH of the serving cell, where the sending unit is further configured to Transmitting power, transmitting data and/or signaling to the base station by using a subframe other than the initial transmission frame of the PUSCH. In a fifth possible implementation, the acquiring unit acquires, according to the first compensation value, an initial frame and an initial frame when the UE performs communication on the PUSCH according to the first compensation value. The transmit power of the subframe specifically includes:

^ PUSCH Mi) ^ shows the transmission bandwidth allocated by the base station to the UE, that is, the number of resources; ^P 0 - ΗΛΓ > represents the target power value, that is, the power value that the base station wants to receive the signal; ^ρ represents the downlink path loss; ^a represents the downlink path loss Compensation factor; W represents power adjustment state;

^Δ '('') represents the relevant power compensation value of the MCS; and/or

P (f) = min J PCMAX'C ( ⁷ )― Ppuccu , _c ( ⁷ ),

[10 log ₁₀ (M _mc (0) + P ₀ _ _PUSCH , (j) + _c (j) - PL _c +A ^( + ( J ^LJ . where Μ4 Λ0 represents the maximum transmit power value of the UE; ^p pu ; shows the transmit power value of PUCCH; the definitions of ^M PUSCH, c(i), ^P 0_PUSCH, c( j), ^PL c, « _C '), f ) and ^ TF ) are the same as when PUSCH is not transmitted simultaneously with PUCCH . An embodiment of the present invention provides a mobile communication method and a user equipment. When the user equipment UE communicates with a base station on a PUSCH, the related power compensation value of the MCS of the initial transmission frame is set to a first compensation value. Acquiring a value of the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell; Rate, transmitting data and/or signaling to the base station through the initial transmission frame of the PUSCH. In this way, since the transmission power of the initial transmission frame is less affected by the MCS, the transmission power of the initial transmission frame when the UE communicates with the base station on the PUSCH is as accurate as possible, even when the MCS selected by the UE is small. The transmit power of the UE is increased, thereby reducing the bit error rate on the PUSCH. Even when the MCS selected by the UE is high, the transmit power of the UE can be reduced, thereby reducing power waste and interference to the same-frequency neighboring cell.

BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

FIG. 1 is a schematic flowchart of a method for mobile communication according to an embodiment of the present invention; FIG. 2 is a schematic flowchart of another method for mobile communication according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a user equipment according to an embodiment of the present invention; FIG. 4 is a schematic structural diagram of another user equipment according to an embodiment of the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiment 1 The embodiment of the present invention provides a method for mobile communication. As shown in FIG. 1, the method includes:

101. When the user equipment UE communicates with the base station on the physical uplink shared channel (PUSCH), the related power compensation value of the modulation and coding mode MCS of the initial transmission frame is set to a first compensation value, so that the UE initially communicates on the PUSCH. The transmit power of the transmitted frame is affected by The impact of MCS is small.

When the UE communicates with the base station on the PUSCH, the transmit power on the initial frame is not adjusted. Therefore, the transmit power of the UE in the initial frame may be low or high.

In the prior art, the transmit power of the UE in the initial transmission frame is affected by the MCS. When the base station selects a lower MCS for the UE, and the associated power compensation value of the MCS on the initial frame is lower, the bit error rate is higher. When the base station selects a higher MCS for the UE, and the associated power compensation value of the MCS on the initial transmission frame is higher, power waste and interference to the same frequency neighboring area are caused. In the prior art, the relevant power compensation value of the MCS is the estimated power compensation value of the estimated MCS, and the relevant power compensation value of the estimated MCS is:

Formula 1 )

Wherein, BPRE represents the number of bits transmitted on each resource symbol; when control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, equal to P _offse , indicating the power offset value of the control signaling relative to the data, in other cases, ^β ' is equal to 1; indicates the cell common parameters.

Regardless of whether the PUSCH is transmitted simultaneously with the PUCCH, the definition of the associated power compensation value ^Δ ('') of the estimated MCS is the same, and all are the formula (1).

It can be seen from equation (1) that when = 1.25, in the i-th of the serving cell c,

The value of ^Δ (') of the sub-frame is determined by BPRE and ^μ . For ^μ , when control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, P equals A to indicate the power offset value of the control signaling relative data; in other cases, it can be seen that Ρ has no direct connection with the MCS Therefore, ^Δ (') ^Ρ 1.

The value is determined by BPRE. Since each MCS corresponds to one BPRE, when the base station determines the MCS for the UE, the value of the BPRE is uniquely determined, and the value is determined. When the UE communicates with the base station on the PUSCH, if the MCS on the initial transmission frame selected by the base station for the UE is lower, less than zero, and the transmission power is low, the error rate is high. At this time, if the first compensation value is set to be greater than (; ⁾ , the relevant power compensation value of the MCS may be increased to increase the transmission power of the UE, thereby reducing the error rate.

When the UE communicates with the base station on the PUSCH, if the MCS on the initial transmission frame selected by the base station for the UE is higher, ^Δ ^) is greater than zero, and the transmission power is too high, which causes waste of power and the same-frequency neighboring area. interference. At this time, if the first compensation value is set to be smaller than ^A ^ ⁽ⁱ⁾ , the related power compensation value of the MCS can be reduced, and the transmission power of the UE is reduced, thereby reducing power waste and interference to the same frequency neighboring area. Therefore, when the UE communicates with the base station on the PUSCH, the related power compensation value of the MCS needs to be set, so that the transmit power of the UE in the initial transmission frame is less affected by the MCS. In the embodiment of the present invention, when the UE communicates with the base station on the PUSCH, the related power compensation value of the MCS of the initial transmission frame is set to the first compensation value.

In summary, in order to make the transmit power of the initial frame when the UE communicates on the PUSCH is less affected by the MCS, the absolute value of the first compensation value may be set to be less than the absolute value of Δ(''). Optionally, when the UE communicates with the base station on the PUSCH, the first compensation value may be set to zero.

When the first compensation value is zero, the UE's transmit power on the initial frame is not affected by the MCS.

102. Acquire, according to the first compensation value, a transmit power of an initial frame that is sent by the UE when the PUSCH of the serving cell performs communication.

After the first compensation value is determined, the UE may obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the UE's definition of the transmit power of the PUSCH.

The definition of the transmit power differs depending on whether PUSCH and PUCCH are transmitted simultaneously. In either case, the UE can obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the transmit power.

103. Transmit data and/or signaling to the base station by using the initial transmission frame of the PUSCH by using the transmit power.

When the transmit power of the initial transmission frame when the UE performs communication on the PUSCH is determined, the UE The determined transmit power transmits data information and/or signaling to the base station through the initial transmission frame of the PUSCH. The UE performs power adjustment on the subframe other than the initial transmission frame based on the transmission power, so that the transmission power is within a range suitable for reception by the base station.

An embodiment of the present invention provides a method for mobile communication. When the user equipment UE communicates with a base station on a PUSCH, the related power compensation value of the MCS of the initial transmission frame is set to a first compensation value; according to the first compensation value. Acquiring a transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell; and transmitting, by the transmit power, data and/or signaling to the base station by using the initial frame of the PUSCH. In this way, since the transmission power of the initial transmission frame is less affected by the MCS, the transmission power of the initial transmission frame when the UE communicates with the base station on the PUSCH is as accurate as possible, even when the MCS selected by the UE is small. The transmit power of the UE is increased, thereby reducing the bit error rate on the PUSCH. Even when the MCS selected by the UE is high, the transmit power of the UE can be reduced, thereby reducing power waste and interference to the same-frequency neighboring cell. Embodiment 2 The embodiment of the present invention provides a method for mobile communication. As shown in FIG. 2, the method includes:

201. When the UE communicates with the base station on the physical uplink shared channel PUSCH, the modulation coding mode of the initial transmission frame is set. The related power compensation value of the MCS is the first compensation value, and the first compensation value is:

,

^101ο §ιο ( H . β

0, for K =0 Equation ( 2 ) where BPRE represents the number of bits transmitted on each resource symbol; ^βΡΚΕ represents the number of bits transmitted on each resource symbol on the initial transmission frame when the UE communicates with the base station on the PUSCH When the control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, ¹⁵ is equal to, indicating the power offset value of the control signaling relative to the data. In other cases, ^β ' is equal to 1; indicating the cell common parameter.

Regardless of whether the PUSCH is transmitted simultaneously with the PUCCH, the value of P is not affected by the MCS. At this time, the value of ^Δ ' ^ω is determined by BPRE, that is, determined by MCS. For the base station to select a fixed MCS for all served UEs, the base station In order to make the signal quality of all served UEs meet the requirements of the base station for the MCS demodulation, a lower MCS is selected. Thus, when the UE communicates with the base station on the PUSCH, for the first compensation value ^Δ '(''), it can be seen from the formula (2) that the selection of the MCS does not affect the value of the first compensation value. The first compensation value has a small impact on the UE transmit power.

For the manner in which the base station adaptively selects the MCS for all served UEs, when the channel quality is sufficiently poor, the base station selects a lower MCS. When the UE communicates with the base station on the PUSCH, for the first compensation value ^Δ ' ( ⁰ , it can be seen from equation (2), the selection of the MCS does not affect). When the channel quality is good enough, the base station selects a higher MCS. When the UE communicates with the base station on the PUSCH, for the first compensation value ^Δ '(''), it can be seen from the formula (2) that the selection of the MCS does not affect the value of ^Δ '('') . Therefore, the first compensation value has less influence on the UE transmit power.

Where, when there is data transmitted on the PUSCH, if = 1.25, the value in the formula is 1, at this time, the first compensation value is: A; () = 101o _gl . ( ₂ ) Formula ( ₃ ) For the formula (3), when the UE communicates with the base station on the initial frame, it can be concluded that the first compensation value is zero.

When the control signaling is transmitted using the PUSCH and no data transmission on PUSCH, if ^{= 1.25, Δ '(''} ) ^^ OT at this time is used in the ^formula, Δ' ⁽⁰ is expressed as: Fj ₀ = m _Ogl _(2. AZ), Equation ( ⁴ ) For Equation (4), when the UE communicates with the base station on the initial frame, it can be concluded that the first compensation value is ^Δ . ('·) = ¹⁰¹ ^. ( ).

202. Acquire, according to the first compensation value, a transmit power of an initial frame that is sent by the UE when the PUSCH of the serving cell performs communication.

After determining the first compensation value, the UE acquires the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the transmit power.

Where c denotes the serving cell; c _{c (} o denotes the maximum transmit power value of the UE; M denotes the transmission bandwidth allocated by the base station to the UE, ie the number of resources; ^Ρ ο ρ υ 表示 represents the target power value, ie the base station wishes to receive the signal The power value; ^Ρ indicates the downlink path loss; ^a indicates the downlink path loss compensation; (') indicates the power adjustment state; ^Δ '('') indicates the power compensation value of the modulation and coding mode, that is, the first compensation value.

Due to the transmission of signaling on the PUCCH, when the PUSCH is not transmitted simultaneously with the PUCCH, it is impossible to transmit signaling on the PUSCH. Therefore, when the initial frame is transmitted, the first compensation value is zero. The UE calculates the transmit power of the initial transmission frame according to the formula (5).

When PUSCH and PUCCH are transmitted simultaneously, the transmit power of the UE is:

101o _gl ()) + P _c , (j) + a _c (j)-PL _c +A' _{TP c} (i) + f _c (i)

Formula

(6) where, represents the maximum transmit power value of the UE; Α^^(') indicates the transmit power value of pucCH; , , PL _C , _c (j), f _c (l) and are defined as the PUSCH does not simultaneously with the PUCCH The definition at the time of transmission.

When the PUSCH and the PUCCH are simultaneously transmitted, there may be control signaling and no data is transmitted on the PUSCH. Therefore, the first compensation value is: Δ. << = ΐ01. _3⁄4 . ( Γ). The UE calculates the transmit power of the initial transmission frame according to the formula (6).

203. Transmit data and/or signaling to the base station by using the initial transmission frame of the PUSCH by using the transmit power.

After the UE transmits the transmit power of the initial frame when the PUSCH performs communication, the UE transmits data and/or signaling to the base station through the initial frame of the PUSCH by using the determined transmit power.

Transmitting, by the UE, the initial transmission frame of the PUSCH to the After the base station transmits data and/or signaling, the UE performs power adjustment based on the transmit power, so that the transmit power of the subframe other than the initial transmit frame is within a range suitable for reception by the base station.

Specifically, the UE sets a related power compensation value of the MCS of the subframe other than the initial frame to the first compensation value. Obtaining, according to the first compensation value, a transmit power of a subframe other than the initial frame when the UE performs communication on the PUSCH of the serving cell, and determining the transmit power, in a subframe other than the initial frame. Transmitting data and/or signaling to the base station.

An embodiment of the present invention provides a method for mobile communication. When the user equipment UE communicates with a base station on a PUSCH, the related power compensation value of the MCS of the initial transmission frame is set to a first compensation value; according to the first compensation value. Acquiring a transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell; and transmitting, by the transmit power, data and/or signaling to the base station by using the initial frame of the PUSCH. In this way, since the transmission power of the initial transmission frame is less affected by the MCS, the transmission power of the initial transmission frame when the UE communicates with the base station on the PUSCH is as accurate as possible, even when the MCS selected by the UE is small. The transmission power of the UE is increased, thereby reducing the error rate on the PUSCH; and even when the MCS selected by the UE is high, the transmission power of the UE can be reduced, thereby reducing power waste and interference to the same-frequency neighboring area; Furthermore, when the transmission power is adjusted on a subframe other than the initial frame, the transmission power can be adjusted to a suitable value more quickly.

Embodiment 3 The embodiment of the present invention provides a user equipment. As shown in FIG. 3, the user equipment 30 includes: a setting unit 31, an obtaining unit 32, and a sending unit 33. The setting unit 31 is configured to: when the UE communicates with the base station on the physical uplink shared channel PUSCH, set a correlation power compensation value of the modulation coding mode MCS of the initial transmission frame to a first compensation value, so that the UE performs on the PUSCH. The transmission power of the initial transmission frame during communication is less affected by the MCS.

When the UE communicates with the base station on the PUSCH, the transmit power on the initial frame is not adjusted. Therefore, the transmit power of the UE in the initial frame may be low or high. In the prior art, the transmit power of the UE in the initial transmission frame is affected by the MCS. When the MCS selected by the base station for the UE is low, and the related power compensation value of the MCS on the initial transmission frame is low, the error rate is high. When the MCS selected by the base station for the UE is high, and the related power compensation value of the MCS on the initial transmission frame is too high, power waste and interference to the same frequency neighboring area may be caused. In the prior art, the relevant power compensation value of the MCS is the estimated power compensation value of the estimated MCS, and the related power compensation value of the estimated MCS is:

Formula 1 )

The value of ^Δ (') of the sub-frame is determined by BPRE and ^μ . For ^μ , when control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, it is equal to Α indicating the power offset value of the control signaling relative data; otherwise, it is equal to 1. It can be seen that Ρ is not directly related to MCS, therefore, the value of ^Δ (') is determined by BPRE. Since each MCS corresponds to one BPRE, when the base station determines the MCS for the UE, the value of the BPRE is uniquely determined, and the value is determined.

When the UE communicates with the base station on the PUSCH, if the MCS on the initial transmission frame selected by the base station for the UE is lower, less than zero, and the transmission power is low, the error rate is high. At this time, if the setting unit 31 sets the first compensation value to be greater than ^Δ (''), the related power compensation value of the MCS may be increased to increase the transmission power of the UE, thereby reducing the error rate.

When the UE communicates with the base station on the PUSCH, if the MCS on the initial transmission frame selected by the base station for the UE is higher, ^Δ ^ ) is greater than zero, and the transmission power is high, the power is generated. Waste and interference with co-frequency neighbors. At this time, if the setting unit 31 sets the first compensation value to be smaller than ^Δ (''), the related power compensation value of the MCS may be reduced, the transmission power of the UE is reduced, and the waste of power and interference to the same frequency neighboring area are reduced. .

Therefore, when the UE communicates with the base station on the PUSCH, the setting unit 31 needs to set the relevant power compensation value of the MCS, so that the UE's transmit power in the initial transmission frame is less affected by the MCS. In the embodiment of the present invention, when the UE communicates with the base station on the PUSCH, the setting unit 31 sets the relevant power compensation value of the MCS of the initial frame to be the first compensation value.

In summary, in order to make the transmit power of the initial frame when the UE communicates on the PUSCH is less affected by the MCS, the setting unit 31 may set the absolute value of the first compensation value to be less than ^Δ (''). Absolute value.

The setting unit 31 is further configured to set the first compensation value to be zero.

The acquiring unit 32 is configured to acquire, according to the first compensation value, a transmit power of an initial frame when the UE performs communication on a PUSCH of a serving cell. After the first compensation value is determined, the acquiring unit 32 may obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the UE's uplink transmit power on the PUSCH. The definition of the transmit power differs depending on whether PUSCH and PUCCH are transmitted simultaneously. In either case, the obtaining unit 32 can obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the transmit power.

When the PUSCH is not transmitted simultaneously with the PUCCH, the UE's transmit power is defined as:

PpuscH, (0 = min ^ _{0 logio {MpuscH c +} P _o _ _pu ^(} a _{c {j)} . ^ _+A ' _{Tp c(i) +} [dm];

(5) where c is the serving cell; (representing the maximum transmit power value of the UE;

^ PUSCH Mi) ^ shows the transmission bandwidth allocated by the base station to the UE, that is, the number of resources; ^P 0 — ΗΛί Indicates the target power value, that is, the power value that the base station wants to receive the signal; indicates the downlink path loss; °^ indicates the downlink path loss compensation; W indicates the power adjustment state; ^Δ '('') indicates the power compensation value of the modulation and coding mode, that is, the first A compensation value.

P = min J PCMAX'C Ppuccu , _c ( ⁷ ),

Hide ^h) ^mm ^ll01o _gl. (M _WSOT ()) _{+ J} . .) + " :) .^ ₊ ; () ₊ ; Formula

(6) where, the maximum transmit power value of the UE is indicated; ^p pu; the value of the transmit power of the PUCCH; the definitions of , , , « _C '), f ) and ) are defined as when the PUSCH is not transmitted simultaneously with the PUCCH. The sending unit 33 is configured to transmit data and/or signaling to the base station by using the initial transmission frame of the PUSCH by using the transmit power.

After the UE transmits the transmit power of the initial frame when the PUSCH performs communication, the sending unit 33 transmits the data information and/or signaling to the base station through the initial frame of the PUSCH by using the determined transmit power.

The setting unit 31 is further configured to set the first compensation value:

, Equation (2) where BPRE represents the number of bits transmitted on each resource symbol; ^ represents the number of bits transmitted on each resource symbol on the initial frame when the UE communicates with the base station on the PUSCH; When transmitting through the PUSCH and no data is transmitted on the PUSCH, ¹⁵ is equal thereto, indicating the power offset value of the control signaling relative to the data. In other cases, ^β ' is equal to 1; indicating the cell common parameter.

Regardless of whether the PUSCH is transmitted simultaneously with the PUCCH, the value of P is not affected by the MCS. At this time, the value of ^Δ ' ^ω is determined by BPRE, that is, determined by MCS. For the UE to select a fixed MCS for all serving UEs, the base station needs to satisfy the base station to demodulate the MCS in order to make the signal quality of all served UEs Ask for the lower MCS. Thus, when the UE communicates with the base station on the PUSCH, for the first compensation value ^Δ '(''), it can be seen from the formula (2) that the selection of the MCS does not affect the value of the first compensation value. The first compensation value has a small impact on the UE transmit power.

Wherein, when there is data transmitted on the PUSCH, if = 1.25, ^A ) the value in the formula is 1, at this time, the first compensation value is: A; () = 101o _gl . ( ₂ ) Formula ( ₃ ) For the formula (3), when the UE communicates with the base station on the initial frame, it can be concluded that the first compensation value is zero.

When the control signaling is transmitted using the PUSCH and no data transmission on PUSCH, if ^{= 1.25, Δ '(''} ) ^^ OT at this time is used in the ^formula, Δ' ⁽⁰ is expressed as: Fj ₀ = m _Ogl ₍₂ . AZ), formula ( ⁴ )

For equation (4), when the UE communicates with the base station on the initial frame, it can be concluded that the first compensation value is ^Δ . ('·)= ¹⁰¹ ^. ( ). Due to the transmission of signaling on the PUCCH, when the PUSCH is not transmitted simultaneously with the PUCCH, it is impossible to transmit signaling on the PUSCH. Therefore, when the initial frame is transmitted, the first compensation value is zero. The obtaining unit 32 calculates the transmission power of the initial transmission frame according to the formula (5). The transmitting unit 33 transmits the data and/or signaling to the base station on the initial frame of the PUSCH by using the transmit power. When the PUSCH and the PUCCH are simultaneously transmitted, there may be control signaling and no data is transmitted on the PUSCH. Therefore, the first compensation value is: = 101. _3⁄4 . The UE calculates the transmission power of the initial transmission frame according to the formula (6). The transmitting unit 3 3 transmits the data and/or signaling on the initial frame of the PUSCH by using the transmit power. After the transmitting unit 33 transmits data and/or signaling to the base station by using the initial transmission frame of the PUSCH by using the transmit power, the UE performs power adjustment based on the transmit power, so that The transmit power of the subframes other than the initial transmission frame is within the range that the base station is suitable for reception.

The setting unit 31 is further configured to: when the UE communicates with the base station on the PUSCH, set a related power compensation value of the MCS of the subframe other than the initial frame to the first compensation value.

The acquiring unit 32 is further configured to acquire, according to the first compensation value, a transmit power of a subframe other than the initial frame when the UE performs communication on the PUSCH of the serving cell. The sending unit 3 3 is further configured to transmit, by using the transmit power, data and/or signaling to the base station by using a subframe other than the initial frame of the PUSCH. The embodiment of the present invention provides a user equipment, where the setting unit sets the relevant power compensation value of the MC S of the initial frame to be the first compensation value when the UE communicates with the base station on the PUSCH; The first compensation value is used to acquire the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell; the sending unit transmits the data to the base station by using the initial transmit frame of the PUSCH by using the transmit power. / or signaling. In this way, since the transmission power of the initial transmission frame is less affected by the MC S, the transmission power of the initial transmission frame when the UE communicates with the base station on the PUSCH is as accurate as possible, even when the MC S selected by the UE is small. It is also possible to improve the transmission power of the UE, thereby reducing the bit error rate on the PUS CH; and even when the MC S selected by the UE is high, the transmission power of the UE can be reduced, thereby reducing power waste and co-frequency neighboring. Interference of the zone; Furthermore, when the transmit power is adjusted on a subframe other than the initial frame, the transmit power can be adjusted to a suitable value more quickly.

Embodiment 4

An embodiment of the present invention provides a user equipment UE. As shown in FIG. 4, the user equipment 40 includes: a processor 41 and a transmitter 42. The processor 41 is configured to: when the UE communicates with the base station on the physical uplink shared channel (PUSCH), set the relevant power compensation value of the modulation and coding mode MCS of the initial transmission frame to a first compensation value, so that the UE performs on the PUSCH. The transmission power of the initial transmission frame during communication is less affected by the MCS.

101o _gl . ((2 K for ^ =1.25

A _{TP c} (j) = , formula (1)

' 0, for K _s =0

It can be seen from equation (1) that when = 1.25, the value of ^Δ (') in the i-th subframe of the serving cell c is determined by BPRE and ^μ . For ^μ , when control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, P equals A to indicate the power offset value of the control signaling relative data; in other cases, it can be seen that Ρ is not directly related to the MCS, Therefore, ^Δ (') ^Ρ is equal to 1.

The value is determined by BPRE. Since each MCS corresponds to one BPRE, when the base station determines the MCS for the UE After that, the value of BPRE is uniquely determined, and then the value is determined. When the UE communicates with the base station on the PUSCH, if the MCS on the initial transmission frame selected by the base station for the UE is lower, less than zero, and the transmission power is low, the error rate is high. At this time, if the processor 41 sets the first compensation value to be greater than '), the related power compensation value of the MCS may be increased to increase the transmission power of the UE, thereby reducing the error rate.

When the UE communicates with the base station on the PUSCH, if the MCS on the initial transmission frame selected by the base station for the UE is higher, ^Δ ^) is greater than zero, and the transmission power is too high, which causes waste of power and the same-frequency neighboring area. interference. At this time, if the processor 41 sets the first compensation value to be smaller than ^Δ (''), the related power compensation value of the MCS may be reduced, and the UE's transmit power is reduced, thereby reducing power waste and interference to the same frequency neighboring region. .

Therefore, when the UE communicates with the base station on the PUSCH, the processor 41 needs to set the relevant power compensation value of the MCS, so that the UE's transmit power in the initial transmission frame is less affected by the MCS. In the embodiment of the present invention, when the UE communicates with the base station on the PUSCH, the processor 41 sets the relevant power compensation value of the MCS of the initial transmission frame to a first compensation value. In summary, in order to make the transmit power of the initial frame when the UE communicates on the PUSCH is less affected by the MCS, the processor 41 may set the absolute value of the first compensation value to be less than ^Δ (''). Absolute value.

The processor 41 is further configured to set the first compensation value to be zero. When the first compensation value is zero, the UE's transmit power on the initial frame is not affected by the MCS. The processor 41 is further configured to acquire, according to the first compensation value, a transmit power of an initial frame when the UE communicates in a PUSCH of a serving cell. After the first compensation value is determined, the processor 41 may obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the UE's uplink transmit power on the PUSCH.

The definition of the transmission power differs depending on whether the PUSCH and the PUCCH are simultaneously transmitted. In either case, the processor 41 can obtain the transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell according to the definition of the transmit power. When the PUSCH is not transmitted simultaneously with the PUCCH, the UE's transmit power is defined as:

(5) where c denotes a serving cell; ^ denotes a maximum transmit power value of the UE;

^ PUSCH Mi) ^ indicates the transmission bandwidth allocated by the base station to the UE, that is, the number of resources; ^P 0 - ΗΛΓ > indicates the target power value, that is, the power value that the base station wants to receive the signal; ^Ρ indicates the downlink path loss; ^a indicates the downlink path loss Compensation; W represents the power adjustment state; ^Α Λ represents the power compensation value of the modulation and coding mode, that is, the first compensation value.

P = min J PCMAX'C ( ⁷ ) - Ppuccu , _c ( ⁷ ),

m ^m ll01o _gl . (M _WSOT ()) _{+ J} . .) + " :) .^ ₊ ; () ₊ /:( ) ^ side"; formula

(6) where PCM^ represents the maximum transmit power value of the UE; PPUCCH ¹ represents the transmit power value of the PUCCH; ^M PUSCH,c), ^P 0_PUSCH, c( j), ^PL c, « _C '), f ) and ^ The definition of TF is the same as when PUSCH is not transmitted simultaneously with PUCCH. The transmitter 42 is configured to transmit data and/or signaling to the base station by using the initial transmission frame of the PUSCH by using the transmit power.

After the UE transmits the transmit power of the initial frame when the PUSCH performs communication, the transmitter 42 transmits the data information and/or signaling to the base station through the initial frame of the PUSCH with the determined transmit power.

The processor 41 is further configured to set the first compensation value

^L ―丄

101o _gl . ( , n . . . _K , H for ^=1. 5 o' ^for ^ ^{= 0} , Equation ( 2 ) where BPRE represents the number of bits transmitted on each resource symbol; ^βΡΚΕ indicates that the UE is on PUSCH Number of bits transmitted on each resource symbol on the initial transmission frame when communicating with the base station; when control signaling is transmitted through the PUSCH and no data is uploaded on the PUSCH When input, Ρ is equal to ^ where, indicating the power offset value of the control signaling relative data. In other cases, ^β ' is equal to 1; indicating the common parameters of the cell.

Regardless of whether the PUSCH is transmitted simultaneously with the PUCCH, the value of P is not affected by the MCS. At this time, the value of ^Δ ' ^ω is determined by BPRE, that is, determined by MCS. For the UE to select a fixed MCS for all serving UEs, the base station selects a lower MCS in order to make the signal quality of all served UEs meet the requirements of the base station for the MCS demodulation. Thus, when the UE communicates with the base station on the PUSCH, for the first compensation value ^Δ '(''), it can be seen from the formula (2) that the selection of the MCS does not affect the value of the first compensation value. The first compensation value has a small impact on the UE transmit power.

When control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, if = 1.25, the value of ^^ ^OT in the formula ^Δ '('') is at this time, ^Δ ' (the representation of ⁰ is:

△ >1. _§1 . ⁽ ^ 〕八_{( Α} For equation ( 4 ), when the UE communicates with the base station on the initial frame, The first compensation value is ^Δ . ('·)= ¹⁰¹ ^. ( ). Due to the transmission of signaling on the PUCCH, when the PUSCH is not transmitted simultaneously with the PUCCH, it is impossible to transmit signaling on the PUSCH. Therefore, when the initial frame is transmitted, the first compensation value is zero. The processor 41 calculates the transmit power of the initial transmission frame according to the formula (5). The transmitter 42 transmits the data and/or signaling to the base station on the initial frame of the PUSCH at the transmit power.

When PUSCH and PUCCH are transmitted simultaneously, there may be control signaling and no data is transmitted on the PUSCH. Therefore, the first compensation value is: ^ΛΟ Κ . The UE calculates the transmission power of the initial transmission frame according to the formula (6). The transmitter 42 transmits the data and/or signaling to the base station on the initial frame of the PUSCH at the transmit power.

After the transmitter 42 transmits data and/or signaling to the base station through the initial transmission frame of the PUSCH by using the transmit power, the UE performs power adjustment based on the transmit power, so that The transmit power of the subframes other than the initial transmission frame is within the range that the base station is suitable for reception.

The processor 41 is further configured to: when the UE communicates with the base station on the PUSCH, set a related power compensation value of the MCS of the subframe other than the initial frame to the first compensation value.

The processor 41 is further configured to acquire, according to the first compensation value, a transmit power of a subframe other than the initial frame when the UE performs communication on the PUSCH of the serving cell.

The transmitter 42 is further configured to transmit data and/or signaling to the base station by using a subframe other than the initial transmission frame of the PUSCH by using the transmit power.

An embodiment of the present invention provides a user equipment, where the UE sets a related power compensation value of an MCS of an initial transmission frame to a first compensation value when the UE communicates with a base station on a PUSCH; And acquiring, by the first compensation value, a transmit power of the initial frame when the UE communicates with the PUSCH of the serving cell; the transmitter transmitting, by using the transmit power, the data to the base station by using the initial frame of the PUSCH Or signaling. In this way, since the transmission power of the initial transmission frame is less affected by the MCS, the transmission power of the initial transmission frame when the UE communicates with the base station on the PUSCH is as accurate as possible, even when the MCS selected by the UE is small. Increasing the transmit power of the UE, thereby reducing the bit error rate on the PUSCH; and even when the MCS selected by the UE is high, it can be reduced. The transmission power of the small UE, thereby reducing power waste and interference to the same frequency neighboring area; further, when the transmission power is adjusted on the subframe other than the initial transmission frame, the transmission power can be adjusted to a suitable speed more quickly. Value.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing method includes the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

Claim

A method of mobile communication, characterized in that

When the user equipment UE communicates with the base station on the physical uplink shared channel (PUSCH), the related power compensation value of the modulation and coding mode MCS of the initial transmission frame is set to a first compensation value, so that the UE transmits an initial frame when communicating on the PUSCH. The transmit power is less affected by the MCS;

Obtaining, according to the first compensation value, a transmit power of an initial frame when the UE performs communication on a PUSCH of a serving cell;

Data and/or signaling is transmitted to the base station over the initial transmission frame of the PUSCH at the transmit power.

2. The method of claim 1 wherein the first compensation value is zero.

3. The method according to claim 1, wherein the first compensation value is:

i

1 ^01ο ₂ calendar OK _s =U5,

0, for K _s = 0

Wherein BPRE represents the number of bits transmitted on each resource symbol; ^ΒΡΚΕ _α1 represents the number of bits transmitted on each resource symbol on the initial frame when the UE communicates with the base station on the PUSCH; when control signaling is transmitted through the PUSCH and When no data is transmitted on the PUSCH,

Ρ equal to ^ where represents the power offset value of the control signaling relative data,

τ ,

In his case, ^β ' is equal to 1; indicating that the cell has a common parameter.

4. The method according to claim 3, wherein when the control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, the first compensation value is: A _c (= l0log ₁₀ 1⁄2 ) _; When the data is transmitted on the PUSCH, the first compensation value is zero.

The method according to claim 3, further comprising: after transmitting data and/or signaling to the base station by using the initial transmission frame of the PUSCH by using the transmit power, further comprising:

Acquiring, according to the first compensation value, that the UE performs communication on a PUSCH of a serving cell The transmit power of the subframe other than the initial frame;

At the transmission power, data and/or signaling is transmitted to the base station through subframes other than the initial transmission frame of the PUSCH.

The method according to claim 5, wherein the acquiring the transmit power of the subframe other than the initial frame and the initial frame when the UE performs communication on the PUSCH according to the first compensation value includes:

When the PUSCH is not transmitted simultaneously with the PUCCH, the transmit power of the i-th subframe when the UE communicates on the PUSCH is:

^PpuscH - ⁽ = ^min {l01og ₁₀ ((0) + P ₀ _ _PUS c (j + a _c (j) . PL _c + (/) + f _c (i)\^ ^dBm ; where c denotes a serving cell; ^ represents the maximum transmit power value of the UE;

^M PUSCHMi) represents the transmission bandwidth allocated by the base station to the UE, that is, the number of resources; ^P 0 — ΗΛΓ> represents the target power value, that is, the power value that the base station desires to receive the signal; ^Ρ represents the downlink path loss; represents the downlink path loss compensation factor; W represents the power adjustment state;

^Δ '^ ⁽ ) represents the relevant power compensation value of the MCS;

and / or

P (f) where,

The transmission power value of PUCCH; the definitions of ^M PUSCH, c(i), ^P 0_PUSCH, c( j), ^PL c, « _C '), f ) and ^ TF ) are the same as when PUSCH is not transmitted simultaneously with PUCCH.

A user equipment, the user equipment comprising: a setting unit, an obtaining unit, and a sending unit;

The setting unit is configured to: when the user equipment UE communicates with the base station on the physical uplink shared channel PUSCH, set a correlation power compensation value of the modulation coding mode MCS of the initial transmission frame to a first compensation value, so that the UE is in the PUSCH. The transmission power of the initial transmission frame when performing communication is less affected by the MCS;

The acquiring unit is configured to acquire, according to the first compensation value, a transmit power of an initial frame when the UE performs communication on a PUSCH of a serving cell; The sending unit is configured to transmit data and/or signaling to the base station by using the initial transmission frame of the PUSCH by using the transmit power.

8. The user equipment according to claim 7, wherein the first compensation value is zero.

9. The user equipment according to claim 7, wherein the first compensation value is:

1 ^01ο ₂ calendar OK _s =U5,

0, for K _s = 0

¹⁵ equal to ^ where represents the power offset value of the control signaling relative data, in other cases, ^β ' is equal to 1; represents the cell common parameter.

10. The user equipment according to claim 9, wherein when the control signaling is transmitted through the PUSCH and no data is transmitted on the PUSCH, the first compensation value is: Δ. () = 101. _3⁄4 . 1⁄4^) _; When there is data transmitted on the PUSCH, the first compensation value is zero.

11. The user equipment according to claim 9, wherein

The setting unit is further configured to: when the UE communicates with the base station on the PUSCH, set a related power compensation value of the MCS of the subframe other than the initial frame to the first compensation value; And acquiring, according to the first compensation value, a transmit power of a subframe other than the initial frame when the UE performs communication on the PUSCH of the serving cell;

The sending unit is further configured to transmit, by using the transmit power, data and/or signaling to the base station by using a subframe other than the initial transmission frame of the PUSCH.

The user equipment according to claim 11, wherein the acquiring unit acquires, according to the first compensation value, an initial frame and a subframe other than the initial frame when the UE performs communication on the PUSCH. The transmission power specifically includes:

When the PUSCH is not transmitted simultaneously with the PUCCH, the transmit power of the i-th subframe when the UE performs communication on the PUSCH is: ^PpuscH - ⁽ = ^min {l01og ₁₀ ((0) + P ₀ _ _PUS c (j + a _c (j) . PL _c + (/) + f _c (i)\^ ^dBm ; where c denotes a serving cell; Indicates the maximum transmit power value of the UE;

^Δ '^ ⁽ ) represents the relevant power compensation value of the MCS;

and / or

P (f) = min J PCMAX'C ( ⁷ )― Ppuccu , _c ( ⁷ ), ·

[10 log ₁₀ (M _PUSCH ^ _c (0) + P ₀ _ _PUSC H, (J) + 3⁄4 (7) - L _C + A' _TP , (i) + f _c (i)j ^{[ 1} ' where PCMAX'C (represents the maximum transmit power value of the UE; ⁽⁾ indicates the transmit power value of the PUCCH; ^MpUSCH , ^P PUSCHMj), ^PL a, « _C U), fa (and ₍₎ are defined when the PUSCH is not transmitted simultaneously with the PUCCH Definition.