KR101013491B1 - apparatus for power allocation in wireless communication system and method thereof - Google Patents

Abstract

The present invention is to maximize the transmission capacity of the voice service or data service in consideration of the distribution of the SINR, the type of service, and the number of retransmissions when the voice service and the data service are mixed in the packet switched wireless communication system using the AMC scheme. This is to allow adaptive allocation of transmission power. According to an embodiment of the present invention, an apparatus for determining a power rise set of one of a set of power rise sets including a plurality of power rise values according to a channel state of a user of a voice service and providing a power rise value included in the determined power rise set Link adaptation unit; And a resource and power allocator configured to receive a power rise value from the link adaptation unit and allocate resources and power to a user of a voice service or a user of a data service based on the power rise value. Through this, the present invention can improve the transmission capacity of the system, reduce the investment cost of the system, as well as improve the quality of service.

Power allocation, power-up, adaptive modulation, packet-switched, voice services, data services

Description

Apparatus for power allocation in wireless communication system and method

The present invention relates to an apparatus and method for power allocation in a wireless communication system.

In general, packet-switched systems use Adaptive Modulation and Coding (AMC), which adaptively changes the transmission rate according to the user's wireless channel conditions. A typical packet-switched system using such AMC is a cellular system. CDMA2000 1xEV-DO, HSDPA and WiBro (or Mobile WiMAX). In particular, it is known that the AMC technique can improve the transmission capacity of a system in non-real time traffic (NRT) transmission that is not significantly affected by transmission delay.

However, since voice service requires a certain data rate (eg, G.729 vocoder: 8 kbps) and limited quality of service (QoS) such as limited transmission time delay, service performance may be degraded when transmitting using only AMC technique. A problem occurs. That is, users in low signal-to-interference-plus-noise power ratio (SINR) state will use most of the radio resources, so users with high SINR will be allocated less resources. The system capacity is degraded by low SINR users who read. As such, the voice service allows only a small transmission delay and requires a certain size, and thus performance degradation occurs when only the AMC scheme is applied in a packet switching system.

Therefore, the conventional packet-switched system does not consider the power allocation in the downlink since the NRT service is oriented, and uses the same transmission power in the transmission interval. Recently, Orthogonal Frequency Division Multiplexing Access (OFDMA) packet switching systems (e.g., WiBro and 3GPP long term evolution) have been used to reduce frequency reuse in the promised resource region between cells in order to reduce interference from neighboring cells. Are assigned differently (Fractional Frequency Reuse (FFR)) and different power values (Soft Fractional Frequency Reuse (SFFR)).

However, in order to operate effectively, the rules for resource allocation and power allocation between cells must be defined and resource allocation must be performed according to the rules regardless of the environment of each cell. In other words, if any cell violates the rule, interference occurs in the neighboring cell. Therefore, a problem arises in that the degree of interference of the neighboring cell must be continuously determined in order to perform accurate link adaptation. In addition, in a real environment, since the characteristics of the transmitted traffic and the location distribution of users are formed differently from cell to cell, when each cell independently changes its resource allocation and power allocation scheme, it affects neighboring cells. There is considerable difficulty in applying to the system.

The present invention is to solve the above problems of the prior art, by adaptively allocating the transmission power of the voice service or data service in consideration of the distribution of the SINR, service type and the number of retransmissions, thereby improving the transmission capacity of the system The present invention provides an apparatus and method for allocating power in a wireless communication system.

According to the present invention, a wireless communication system can reduce the investment cost of a system for improving transmission capacity by adaptively allocating transmission power of a voice service or a data service in consideration of the distribution of SINRs, service types and the number of retransmissions. In the present invention, there is provided an apparatus and method for power allocation.

In addition, the present invention by adaptively allocating the transmission power of the voice service or data service in consideration of the distribution of the SINR, the type of service and the number of retransmissions, and the like for power allocation in a wireless communication system to improve the quality of service An apparatus and a method thereof are provided.

To this end, the apparatus for power allocation in the wireless communication system according to an aspect of the present invention determines the power rise set of one of the preset power rise set including a plurality of power rise values according to the channel state of the user of the voice service A link adaptation unit for providing a power rise value included in the determined power rise set; And a resource and power allocator configured to receive a power rise value from the link adaptation unit and allocate resources and power to a user of a voice service or a user of a data service based on the power rise value.

The link adaptation unit calculates the number of users of the voice service that can be transmitted for each of at least one power rise set including a plurality of power rise values according to the channel state of the user of the voice service, and the voice service is determined according to the calculated result. It is determined whether the saturation state, and according to the result of the determination determines a set of power rise for allocating resources and power to the user of the voice service or the user of the data service and assigns the power rise value contained therein to the resource and power allocation Can provide to the department.

The link adaptor may include at least one power increase including a plurality of power rise values in order of a user of a voice service retransmitted, a user of a delayed voice service, and a user of a first transmitted voice service according to a channel state of a user of the voice service. The number of users of voice services that can be transmitted can be calculated for each set. In particular, the link adaptation unit may assign a power up value that minimizes the number of repetitions for retransmission to the user of the retransmitting voice service. The link adaptor may determine a user of the delayed voice service according to a threshold selected according to the transmission capacity of the voice service or the transmission capacity of the data service and allocate a power increase value according to the determined result. The link adaptor performs an ascending order on a signal-to-interference-plus-noise power ratio (SINR) of a user of the first transmitting voice service, and accordingly, the link adaptor performs a high power up to a low SINR user. Value, and a low power up value to a high SINR user.

The link adaptor may determine a set of power increase in which the number of users of the voice service is maximized when the voice service is saturated as a result of the calculation. If the voice service is in an unsaturated state as a result of the calculation, the link adaptation unit may calculate a size of a resource remaining for each power rise set and determine a power rise set that maximizes the number of users of the data service according to the calculated result. have.

In this case, the power rise set may include a plurality of power rise values corresponding to the size of resources that are regularly divided according to the size of the frequency regardless of the size of time in order to configure various power rise values or minimize signaling overhead. Can be.

In addition, the method for allocating power in a wireless communication system according to another aspect of the present invention determines the power rise set of one of a set of power rise set including a plurality of power rise values according to the channel state of the user of the voice service Making; And allocating resources and power to a user of a voice service or a user of a data service based on the power rise value included in the determined power rise set.

The determining may include calculating a number of users of a voice service that can be transmitted for at least one power rise set including a plurality of power rise values according to a channel state of the user of the voice service; Determining whether the voice service is saturated according to the calculated result; And determining, according to the result of the determination, one power increase set among a preset power rise set for allocating resources and power to the user of the voice service or the user of the data service.

The calculating may include at least one power increase value including a plurality of power rise values in order of a user of a voice service retransmitted, a user of a delayed voice service, and a user of a first voice service transmitted according to a channel state of a user of the voice service. The number of users of voice services that can be transmitted can be calculated for each rising set. In particular, the calculating may assign a power up value that minimizes the number of repetitions for retransmission to the user of the retransmitting voice service. The calculating may include determining a user of the delayed voice service according to a threshold selected according to the transmission capacity of the voice service or the transmission capacity of the data service and assigning a power increase value according to the determined result. The calculating may include performing ascending ordering on the signal-to-interference-plus-noise power ratio (SINR) of the user of the first transmitting voice service, and according to the result of performing the high power to the low SINR user. A rise value can be assigned and a low power rise value can be assigned to high SINR users.

In addition, the determining may determine a set of power increase in which the number of users of the voice service is maximized when the voice service is saturated as a result of the calculation. The determining may include calculating a size of resources remaining for each power rise set when the voice service is in an unsaturated state and determining a power rise set for maximizing the number of users of the data service according to the calculated result. Can be.

In this case, the power rise set may include a plurality of power rise values corresponding to the size of resources that are regularly divided according to the size of the frequency regardless of the size of time in order to configure various power rise values or minimize signaling overhead. Can be.

Hereinafter, an apparatus and method for power allocation in a wireless communication system according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4. The terms to be described below are terms defined in consideration of functions in the present invention, which may vary depending on the intention or custom of the user or operator. Therefore, the definition should be based on the contents throughout this specification.

The present invention proposes a technique for power allocation in a wireless communication system. That is, the present invention provides a distribution of signal-to-interference-plus-noise power ratio (SINR) when a voice service and a data service are mixed in a packet switched wireless communication system using an adaptive modulation and coding (AMC) technique. In addition, the transmission power may be adaptively allocated to maximize the transmission capacity of the voice service or the data service in consideration of the service type and the number of retransmissions.

1 is an exemplary diagram illustrating a transmitter configuration of a packet switching system according to an exemplary embodiment of the present invention.

As shown in FIG. 1, the transmitter of the packet switching system according to the present invention includes a link adaptation unit 101, a packet data generator 103, a channel encoder 105, a symbol mapper 107, a resource and power allocation unit. 109, the MAP generator 111, the frame generator 113, and the like.

In particular, the link adaptation unit 101 may adaptively allocate the transmission power to maximize the transmission capacity of the voice service or the data service in consideration of the distribution of the SINR, the service type and the number of retransmissions. That is, the link adaptation unit 101 selects a set of power rises for the downlink frame and determines the MCS level based on this. Accordingly, the coding rate is determined by the channel encoder 105, the modulation index is performed by the symbol mapper 107, and so on. The resource and power allocator 109 and the MAP generator 111 may provide an MCS level and a power rise value.

In this case, the transmission data of each user may be allocated to the region of the downlink frame with the resource size determined by the frequency efficiency according to the channel state, which will be described with reference to FIG. 2.

2 is an exemplary view showing a downlink frame according to an embodiment of the present invention.

As shown in Fig. 2, various frequency sizes {f ₁ , f ₂ ,... , according to the _K f} k of the power rise _{(power boosting value) {β 1} , β 2, ... , β _K } is assigned. Here, the power rise values {β ₁ , β ₂ ,... , β _K } may be all 1, but in the present invention, the link adaptation unit 101 may determine the power rise value differently according to the channel environment of users.

In this case, the link adaptation unit according to the present invention may pre-store a power rise set consisting of a plurality of power rise values satisfying the transmission power limitation condition, that is, within the entire transmission power range.

For example, the OFDMA system limits the maximum power in each OFDM symbol unit, thus minimizing the signaling overhead required for configuring the various power rise values or informing the UE of the power rise values when using a common pilot pattern. In order to achieve this, the power rising area may be regularly divided according to the frequency size regardless of the time size.

3 is an exemplary diagram for describing a power allocation method according to an embodiment of the present invention.

As shown in Fig. 3, when there are N _sets of power rising values, the b-th set is set to B _b = {β _{b, 1} , β _{b, 2} ,... , β _{b, k} }. Here, β _{b, k} may be the k-th power rise value of the b-th set, and k may mean the number of power rise values included in the set. As such, the power increase value included in B _b may be determined to satisfy Equation 1 below.

[Equation 1]

Here, f _k may mean the magnitude of the frequency domain of the k-th power rise value, P ₀ may indicate a subcarrier transmission power when no power rises, and P _t may mean a maximum transmission power, respectively.

In order to transmit the size h _voice of a voice packet to a user n satisfying Equation 1, the size of a resource required in each power rising region may be expressed as Equation 2 below.

[Equation 2]

은 사용자 n이 SINR을 측정하여 상향 링크를 통해 기지국에 보고하는 값을 의미하며,

은

이상의 가장 작은 정수를 의미할 수 있다.Here, J denotes the number of data subcarriers constituting a slot, which is a minimum resource allocation unit, and C _M is a function for outputting a frequency efficiency corresponding to a modulation and coding set (MCS) suitable for SINR. It may mean. This may mean that the MCS determined by the AMC technique is expressed by frequency transmission efficiency. And

Means the value that user n measures SINR and reports to base station via uplink,

silver

It may mean the smallest integer above.

The resource size of each user is determined by the SINR and the power-up value. In the case of using the AMC scheme, since the power-up value is all 1, the resource size can be determined only by the SINR. In this case, since the low SINR users take up system resources and have a problem of rapidly decreasing system capacity, the present invention may use a power allocation technique to prevent voice capacity degradation and resource waste by voice users.

When defining a set of voice users belonging to the k th power rise value of the b th power rise set as U _{b, k} , the number of users that can be transmitted through each power rise set can be calculated. It can be obtained through (S301).

&Quot; (3) "

Here, # {·} may mean the number of aggregation elements, and R _t may mean the size of resources that can be used for transmitting a payload of an actual user in downlink.

If when the number of voice users to be transmitted in each frame to said N _voice to make up the index (index) of the power-up set that can service the N _voice as the element I termed the set, this following formula 4].

&Quot; (4) "

Based on the obtained I, the saturated state or the unsaturated state of the voice service can be confirmed (S303). The saturated state and the unsaturated state of the voice service can be obtained through Equation 5 below.

[Equation 5]

In this case, the saturation of the voice service may mean that the service may not be provided to N _voice voice users regardless of the power rise set. Thus, when the voice service is saturated (g = 1), it is possible to determine the index of the power up set for maximizing the voice capacity through Equation 6 below (S305).

&Quot; (6) "

을 이용하여 MCS 레벨을 결정하고, 이에 따라 채널 부호기(105)에 부호화율을 전달하고, 심볼 맵퍼기(107)에 변조 지수 예컨대, QPSK, 16QAM, 64QAM 등을 전달하며, 자원 및 전력 할당부(109)와 MAP 생성기(111)에 MCS 레벨과 전력 상승 값을 전달할 수 있다.The link adaptation unit 101 is the power rise set obtained earlier.

The MCS level is determined by using the MCS level, the coding rate is transmitted to the channel encoder 105, and the modulation index, for example, QPSK, 16QAM, 64QAM, is transmitted to the symbol mapper 107, and the resource and power allocation unit ( 109 and the MAP generator 111 may transmit the MCS level and the power up value.

On the other hand, when the voice service is in an unsaturated state (g = 0), the power rising set may be selected to maximize the NRT rate by using the remaining resources and transmission power after serving the voice user first.

The remaining resource size used for the voice user may be calculated as shown in Equation 7 below (S307).

[Equation 7]

으로 표현하고 이러한

의 각 전력 상승 값에 속하는 데이터 사용자의 집합을 D_{b ,k}으로 표현할 때, 데이터 용량을 최대화하기 위한 전력 상승 집합의 인덱스를 다음의 [수학식 8]을 통하여 결정할 수 있다(S309).In this case, when the voice user uses a high power, it requires less resources, so that resources may be left. On the contrary, when the voice user uses a low power, the size of the required resource may be increased, but transmission power may be left. So in the power up set, we can use the set of power up values

Represented by these

When a set of data users belonging to each power rise value of D _{b , k} is expressed, an index of the power rise set for maximizing data capacity may be determined through Equation 8 below (S309).

[Equation 8]

The link adaptation unit 101 may transmit N _voices in the current frame by using the power rising set corresponding to the elements of the set I, thereby maximizing data capacity using the remaining resources and power. The set of power rises that are present can be determined again. For example, if the SINR of the data user is low, higher power is required to increase the data capacity, so that the set of power rises that can leave a high power even if the voice user uses a lot of resources in the set I can be determined again. . On the contrary, if the SINR of the data user is high, more resources are required than the high power, so that the set of power rises that can leave more resources even if the voice user uses the high power in the set I can be determined again.

As described above, the present invention adaptively allocates transmission power of a voice service or a data service in consideration of the distribution of SINRs, service types, and the number of retransmissions in a packet transmission system in which voice and data services are mixed, that is, the voice service is saturated. To maximize the voice transmission capacity, and if the voice service is unsaturated, to accommodate the voice capacity and to maximize the data transmission capacity when resources remain, thereby improving the system's transmission capacity and the investment cost of the system. Can reduce the cost.

4 is an exemplary view showing a method of determining the number of users according to an embodiment of the present invention.

As shown in FIG. 4, the link adaptation unit according to the present invention may allocate a power up value and a corresponding resource to a retransmitted voice user first (401). In detail, when a chase combining technique is used for retransmission, in general, retransmission is performed using the same resource, but in the present invention, the size of the resource may be changed and transmitted using a power rise value. For example, in the case of WiBro, QPSK-1 / 4, QPSK-1 / 8 and QPSK-1 / 12 may repeatedly transmit QPSK-1 / 2 twice, four times, and six times. Since a lot of resources are allocated to a user with a high number of repetitions, it is possible to minimize the number of repetitions of the same MCS level to avoid the loss of resources.

In the case of a user having the same MCS level but having two or more repetitions, the minimum power increase value having the minimum repetition number may be determined as shown in Equation 9 below.

[Equation 9]

는 전송 시간 t에서 전력 상승 값을 의미할 수 있다.Here, r may mean the number of repetitions, and PRT may mean a set consisting of the number of repetitions (eg, {1, 2, 4, 6} in WiBro). th _r is the SINR threshold of the MCS level corresponding to r repetitions, TX _n is the number of transmissions of user n, t is the transmission time representing the current frame as 0, and the previous frame as negative. ,

May mean a power rise value at the transmission time t.

는 현재 하향 링크 프레임에서 각 반복 회수에 해당하는 전력 상승 값이 존재하는 경우에 반복 회수와 전력 상승 값의 인덱스를 쌍으로 구성하는 집합을 의미할 수 있는데, 이러한 집합

에서 자원의 반복 회수가 최소가 되도록 반복 회수와 전력 상승 값을 결정하여 MCS 레벨을 적용하도록 할 수 있다.The set thus obtained

In the current downlink frame, if there is a power rise value corresponding to each iteration number, it may mean a set of pairing the number of iterations and the index of the power up value.

In order to minimize the number of repetitions of resources in the repetition number and power rise value can be determined to apply the MCS level.

Next, a power up value and a corresponding resource may be allocated to a user having a large time delay among the voice users of the first transmission (403). In detail, when the time delay threshold for selecting a user to be processed is large, a gain for the user selection to be processed later may be provided, but the number of times of discarding may not be satisfied because the required time delay is not satisfied. On the contrary, when the user selection time delay threshold is small, the user selection gain may be reduced because most resources are used for users with a large time delay. Therefore, the present invention may include a process of finding an optimal value for a threshold value of time delay by first processing the voice and data transmission capacity to maximize.

A user having a time delay equal to or greater than this threshold can be obtained through Equation 10 below.

[Equation 10]

Here, T _{th , k} may represent a threshold value of the k th time delay, and W _k may mean a set of users having a time delay of T _{th , k} or more. T _now means current transmission time, T _{queue , n} means user n's scheduling queue arrival time, and N _delay may mean the number of threshold values of time delay under consideration.

The power up value may be preferentially assigned to the set of users thus determined.

Then, ascending sorting may be performed for the voice user of the first transmission that does not correspond to the user described above (405). The reason for this is to assign high power rise values to voice users with low SINR and low rise values to voice users with high SINR. Thus, power rise values and resources according to the ascending order for the b th power rise set may be allocated (407).

For all voice users thus calculated, the amount of resources in the current frame and the number of available users can be calculated (309), and this can be done for all N _set power rise sets, respectively.

As described above, the present invention adaptively allocates transmission power of a voice service or a data service in consideration of the distribution of SINRs, service types, and the number of retransmissions in a packet transmission system in which voice and data services are mixed, that is, the voice service is saturated. In the case of maximizing the voice transmission capacity, and when the voice service is unsaturated, the quality of service may be improved by accommodating the voice capacity and maximizing the data transmission capacity when resources remain.

The function of canceling adjacent cell interference disclosed herein can be implemented as computer readable code on a computer readable recording medium. Computer-readable recording media include all types of recording devices that store data that can be read by a computer system. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet). do. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

Apparatus and method for allocating power in a wireless communication system according to the present invention can be modified and applied in various forms within the scope of the technical idea of the present invention and are not limited to the above embodiments. In addition, the embodiments and drawings are merely for the purpose of describing the contents of the invention in detail, not intended to limit the scope of the technical idea of the invention, the present invention described above is common knowledge in the technical field to which the present invention belongs As those skilled in the art can have various substitutions, modifications, and changes without departing from the technical spirit of the present invention, it is not limited to the above embodiments and the accompanying drawings, of course, and not only the claims to be described below but also claims Judgment should be made including scope and equivalence.

1 is an exemplary diagram illustrating a transmitter configuration of a packet switching system according to an exemplary embodiment of the present invention.

2 is an exemplary view showing a downlink frame according to an embodiment of the present invention.

3 is an exemplary diagram for describing a power allocation method according to an embodiment of the present invention.

4 is an exemplary view showing a method of determining the number of users according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

101: link adaptation unit

103: packet data generator

105: channel encoder

107: symbol mapper

109 resource and power allocation

111: MAP generator

113: frame generator

Claims (18)

A link adaptation unit configured to determine one power rise set from among a predetermined power rise set including a plurality of power rise values according to a channel state of a user of a voice service, and provide a power rise value included in the determined power rise set; And A resource and power allocator for receiving a power up value from the link adaptation unit and allocating resources and power to a user of a voice service or a user of a data service based on the power rise value. Wherein the link adaptation unit calculates the number of users of the voice service transmittable for each of at least one power rise set including a plurality of power rise values according to a channel state of the user of the voice service, and according to the calculated result It is determined whether the voice service is saturated, and according to the determination result, a set of power rises for allocating resources and powers to a user of the voice service or a user of a data service is determined and the power rise value included therein is determined. Apparatus for power allocation, characterized in that provided to the resource and power allocation. delete According to claim 1, The link adaptation unit, According to the channel state of the user of the voice service, the user of the voice service retransmitted, the user of the delayed voice service, the user of the first transmitting voice service can be transmitted by at least one power rise set including a plurality of power rise value in order And calculate the number of users of the voice service. The method of claim 3, The link adaptation unit, And assigning a power up value to minimize the number of repetitions for retransmission to a user of the retransmitting voice service. The method of claim 3, The link adaptation unit, Device for power allocation characterized in that the user of the transmission delayed voice service is determined according to the threshold selected according to the transmission capacity of the voice service or the transmission capacity of the data service and assigns a power rise value according to the determined result. . The method of claim 3, The link adaptation unit, The user of the first transmitting voice service performs ascending sorting on a signal-to-interference-plus-noise power ratio (SINR), and assigns the highest power rise value to the lowest SINR user according to the result of the performing. And assign the lowest power rise value to the highest SINR user. According to claim 1, The link adaptation unit, And if the voice service is saturated as a result of the calculation, determine a set of power rises in which the number of users of the voice service is maximized. According to claim 1, The link adaptation unit, If the voice service is in the unsaturated state as a result of the calculation, the size of the remaining resources for each power rise set is calculated and according to the calculated result, the power rise set for maximizing the number of users of the data service is determined. Device for power allocation. According to claim 1, The power rise set, In order to configure various power rise values or minimize signaling overhead, power allocation includes a plurality of power rise values corresponding to the size of resources that are regularly divided according to the size of frequency regardless of the size of time. Device for. Determining a power rise set of one of a preset power rise set including a plurality of power rise values according to a channel state of a user of a voice service; And Allocating resources and power to a user of a voice service or a user of a data service based on a power rise value included in the determined power rise set; The determining may include: calculating a number of users of a voice service that can be transmitted for each of at least one power rise set including a plurality of power rise values according to a channel state of the user of the voice service; Determining whether the voice service is saturated according to the calculated result; And determining, according to the result of the determination, one power rise set among a preset power rise set for allocating resources and power to a user of the voice service or a user of a data service. Way. delete The method of claim 10, The calculating step, According to the channel state of the user of the voice service, the user of the voice service retransmitted, the user of the delayed voice service, the user of the first transmitting voice service can be transmitted by at least one power rise set including a plurality of power rise value in order Calculating a number of users of a voice service. The method of claim 12, The calculating step, And assigning a power up value for minimizing the number of repetitions for retransmission to a user of the retransmitting voice service. The method of claim 12, The calculating step, And determining a user of the delayed voice service according to a threshold selected according to the transmission capacity of the voice service or the transmission capacity of the data service and assigning a power increase value according to the determined result. . The method of claim 12, The calculating step, The user of the first transmitting voice service performs ascending sorting on a signal-to-interference-plus-noise power ratio (SINR), and assigns the highest power rise value to the lowest SINR user according to the result of the performing. And assigning the lowest power rise value to the highest SINR user. The method of claim 10, The determining step, If the voice service is saturated as a result of the calculation, determining a set of power rises in which the number of users of the voice service is maximized. The method of claim 10, The determining step, If the voice service is in the unsaturated state as a result of the calculation, the size of the remaining resources for each power rise set is calculated and according to the calculated result, the power rise set for maximizing the number of users of the data service is determined. Method for power allocation. The method of claim 10, The power rise set, In order to configure various power rise values or minimize signaling overhead, power allocation includes a plurality of power rise values corresponding to the size of resources that are regularly divided according to the size of frequency regardless of the size of time. Way.

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