KR20140059474A - User equipment and transmission power control method thereof - Google Patents

User equipment and transmission power control method thereof Download PDF

Info

Publication number
KR20140059474A
KR20140059474A KR1020120125969A KR20120125969A KR20140059474A KR 20140059474 A KR20140059474 A KR 20140059474A KR 1020120125969 A KR1020120125969 A KR 1020120125969A KR 20120125969 A KR20120125969 A KR 20120125969A KR 20140059474 A KR20140059474 A KR 20140059474A
Authority
KR
South Korea
Prior art keywords
subframe
transmission power
transmission
power
maximum
Prior art date
Application number
KR1020120125969A
Other languages
Korean (ko)
Inventor
김종남
박경민
Original Assignee
주식회사 팬택
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 팬택 filed Critical 주식회사 팬택
Priority to KR1020120125969A priority Critical patent/KR20140059474A/en
Publication of KR20140059474A publication Critical patent/KR20140059474A/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/343—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading taking into account loading or congestion level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/346—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels

Abstract

The present invention relates to an apparatus and a method for controlling a transmission power of a terminal when an overlap occurs in a multi-TA (Timing Advance) environment in which synchronization is not made between respective element carriers in an uplink transmission of a terminal.

Description

TECHNICAL FIELD [0001] The present invention relates to a transmission power control method for a terminal and a terminal,

The present invention relates to an apparatus and a method for controlling a transmission power of a terminal when an overlap occurs in a multi-TA (Timing Advance) environment in which synchronization is not made between respective element carriers in an uplink transmission of a terminal.

As the communication system evolved, consumers such as businesses and individuals became using a wide variety of wireless terminals. In a mobile communication system such as a long term evolution (LTE) and a long term evolution (LTE-A) of the current 3rd Generation Partnership Project (3GPP) series, various data such as video and wireless data can be transmitted and received BACKGROUND ART As a high-speed, large-capacity communication system, there has been a demand for developing a technology capable of transmitting large-capacity data that is similar to a wired communication network. As a method for transmitting a large amount of data, a Carrier Aggregation (CA) technique for transmitting and receiving data through a plurality of component carriers (CCs) has been considered.

When data is transmitted / received through a plurality of elementary carriers, the sub-frame transmission start time may not coincide with each other, and the difference may be 30 占 퐏 at most. When the number of subframe transmission start points between element carriers configured in the UE is two or more, this can be referred to as multiple TA (multiple timing advance).

In a multi-TA environment, the starting point of a subframe does not coincide with an elementary carrier, and one subframe and a next subframe can partially overlap.

An object of the present invention is to provide an apparatus and a method for controlling transmission power of a mobile station when superposition occurs in a multi-TA environment in which synchronization is not achieved between the respective carrier waves in uplink transmission of the mobile station.

One embodiment of the present invention is a UE communicating with a base station using a plurality of serving cells classified into a plurality of TAGs (Timing Advance Groups) having different subframe transmission starting points, When the uplink transmission at i (i is an integer equal to or greater than 0) overlaps with a part of the first symbol of the uplink transmission of the subframe i + 1 of the serving cell belonging to another TAG, And a controller for setting the maximum transmission power of the uplink transmission to a maximum transmission power of +1 and controlling the power of the uplink transmission based on the set maximum transmission power.

Another embodiment of the present invention is a UE communicating with a base station using a plurality of serving cells classified into a plurality of TAGs (Timing Advance Groups) having different start times of subframes, When the uplink transmission at i (i is an integer equal to or greater than 0) overlaps with a part of the first symbol of the uplink transmission of the subframe i + 1 of the serving cell belonging to another TAG, And a controller for setting the maximum transmission power of the subframe i + 1 and the maximum transmission power of the subframe i + 1 to the power of the uplink transmission based on the set maximum transmission power.

Another embodiment of the present invention is a transmission power control method performed in a terminal communicating with a base station using a plurality of serving cells classified into a plurality of TAGs (Timing Advance Groups) (I is an integer of 0 or more) of the serving cell belonging to the serving cell overlaps with a part of the first symbol of the uplink transmission of the subframe i + 1 of the serving cell belonging to another TAG, Setting a maximum transmit power to a maximum transmit power of subframe i + 1; And controlling a power of an uplink transmission based on the set maximum transmission power.

Another embodiment of the present invention is a transmission power control method performed in a terminal communicating with a base station using a plurality of serving cells classified into a plurality of TAGs (Timing Advance Groups) (I is an integer equal to or greater than 0) of the serving cell belonging to the serving cell, the uplink transmission overlaps with a part of the first symbol of the uplink transmission of the subframe i + 1 of the serving cell belonging to another TAG, Setting a transmit power to a maximum value of a maximum transmit power of subframe i and a maximum transmit power of subframe i + 1; And controlling a power of an uplink transmission based on the set maximum transmission power.

According to the present invention described above, it is possible to control the transmission power of a UE when an overlap occurs in a multi-TA environment in which synchronization is not achieved between the respective element carriers in uplink transmission of the UE.

1 illustrates a wireless communication system to which embodiments of the present disclosure are applied.
FIG. 2 shows an example in which synchronization does not coincide among the element carriers in the CA environment.
3 shows an example in which the last symbol of the subframe (i) in which the SRS is transmitted and the first symbol of the subframe (i + 1) in which the uplink channel is transmitted are overlapped.
FIG. 4 illustrates a case where the maximum transmission power of the overlapping portion is determined according to an embodiment.
FIG. 5 shows a case where the maximum transmission power of the overlapping portion is determined according to another embodiment.
FIG. 6 illustrates a configuration of a terminal according to an embodiment.
FIG. 7 illustrates a method of controlling transmission power of a UE according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 illustrates a wireless communication system to which embodiments of the present disclosure are applied.

1, a wireless communication system includes a physical uplink shared channel (PUSCH), a Physical Uplink Control CHannel (PDCCH), a PRACH (BS) that performs downlink communication (e.g., PDSCH (Physical Downlink Shared CHannel), PDCCH (Physical Downlink Control CHannel), etc.) (20).

In this specification, the terminal 10 is a comprehensive concept of a terminal in a wireless communication. The terminal 10 may be a mobile station (MS), a user terminal (UT) in GSM as well as a UE (User Equipment) in WCDMA, LTE, HSPA, , A subscriber station (SS), a wireless device, and the like.

The base station 20 is generally a station that communicates with the terminal 10 and includes a Node-B, an evolved Node-B (eNodeB), a sector, a Site, a BTS A transceiver system, an access point, a relay node, and the like.

The base station 20 includes various coverage areas such as a megacell, a macro cell, a microcell, a picocell, a femtocell, a radio resource head (RRH), and a relay node communication range.

The base station 20 may be referred to as a Transmission Point (TP) in terms of transmitting downlink communication to the terminal 10 and may be referred to as a Reception Point , RP), or may be referred to as a Point or a Transmission and Reception Point.

The terminal 10 can transmit the uplink signal to the base station 20. The UE 10 can transmit control information or data information through a Physical Uplink Shared CHannel (PUSCH), which is a primary physical channel for unicast transmission, and transmits HARQ-ACK, uplink control information including a channel status report and a scheduling request (Physical Uplink Control CHannel), which is a channel used for transmitting Uplink Control Information (UCI), and transmits a random access preamble through a physical random access channel (PRACH) . Hereinafter, a state in which a signal is transmitted / received through a channel such as PUSCH, PUCCH, and PRACH is referred to as 'transmission / reception of PUSCH, PUCCH, and PRACH'.

In addition, the terminal 10 can transmit a reference signal SRS (Sounding Reference Signal) for uplink channel estimation to the base station. The SRS may be transmitted in the last symbol within one subframe.

The sum of the transmission powers allocated to PUSCH, PUCCH, PRACH, and SRS in one uplink subframe can not exceed the set maximum transmission power (P CMAX ).

Meanwhile, a Carrier Aggregation (CA) technique in which a plurality of component carriers (CCs) (or serving cells) are integrated and used in a scheme for transmitting a large amount of data can be used. The plurality of element carriers include one primary component carrier (PCC) (or Primary Serving Cell (PCell) and one or more secondary component carriers (SCC) (or Secondary Serving Cell can do.

In such a situation, the subframe transmission start time may not coincide among the element carriers belonging to different frequency bands, and the difference may be 30 μs maximum. When a subframe transmission start time between element carriers configured in the UE is two or more, it can be referred to as multiple TA (multiple timing advance).

FIG. 2 shows an example in which synchronization does not coincide among the element carriers in the CA environment.

2, the first elementary carrier CC1 belongs to a first transmission synchronization group TAG1 and the second elementary carrier CC2 belongs to a second transmission synchronization group TAG2 . Herein, the transmission synchronization group (TAG) refers to a group of element carriers whose subframe transmission times coincide temporally in the uplink transmission, and one transmission synchronization group may include one or more element carriers. 2, since the first element carrier wave CC1 performs uplink transmission ahead of the second element carrier wave CC2 by? T (max. 30 μs), the first element carrier wave CC1 serves as a sub- A phenomenon may occur in which the start portion of the frame i + 1 overlaps with the last portion of the subframe i of the second element carrier (CC2).

The overlap phenomenon can be roughly divided into two as shown in FIG.

The full overlap is a superposition occurring between different element carriers in the same subframe, which means superposition of subframes i (i is an integer equal to or larger than 0) of CC1 and CC2 in the example of FIG.

The partial overlap is a superposition occurring between different element carriers in different subframes, which means superposition of subframe i of CC1 and subframe i of CC2 in the example of FIG.

In a situation where overlapping channels can occur in multiple TA, sum of transmit power of each element carrier and maximum transmit power of terminal (P CMAX ) should be considered. When the sum of the transmission powers of the respective element carriers does not exceed the maximum transmission power (P CMAX ) of the terminal, channel transmission and reference signal transmission of each element carrier are allowed, but the sum of the transmission powers of the respective element carriers is the maximum transmission If the power (P CMAX ) is exceeded, the transmission may be performed as follows.

- In the case of full nesting, cancel the SRS transmission if SCELL's PRACH and SRS are present. If SCELL's PRACH and PUCCH / PUSCH are present, PRACH transmission is prioritized.

- In partial overlap, cancel SRS transmission if SRS and PUCCH / PUSCH / PRACH are present. If SCELL's PRACH and PUCCH / PUSCH are present, PRACH transmission is prioritized. If PUCCH / PUSCH and PUCCH / PUSCH are present, the transmission power is reduced and transmission can be performed.

The maximum transmit power (P CMAX ) may be different for each subframe. As shown in FIG. 2, when a partial overlap occurs between subframe i and subframe i + 1 and the transmission channel of each elementary carrier is PUSCH / PUCCH and PUSCH, or PUSCH / PUCCH and PRACH, The maximum transmission power P CMAX in the subframe i may be the maximum transmission power P CMAX (i) in subframe i or the maximum transmission power P CMAX (i + 1) in subframe i + 1.

3 shows an example in which the last symbol of the subframe (i) in which the SRS is transmitted and the first symbol of the subframe (i + 1) in which the uplink channel is transmitted are overlapped.

Referring to FIG. 3, the first element carrier CC1 belongs to the first transmission synchronization group TAG1, and the second element carrier CC2 belongs to the second transmission synchronization group TAG2. As shown in FIG. 3, since the first elementary carrier CC1 precedes the second elementary carrier CC2 and performs uplink transmission, the first elementary carrier (CC1) Th symbol and the last symbol of the subframe i of the second element carrier (CC2) may overlap. When the SRS is transmitted in the subframe i of the second elementary carrier (CC2), the last symbol of the subframe i to which the SRS is transmitted may be partially overlapped.

In this case, the maximum transmit power of the overlapping part is a maximum transmission power of a sub-frame i (P CMAX (i)) or (broken line in Fig. 3), the maximum transmission power (P CMAX (i + 1)) of the sub-frame i + 1 (Solid line in Fig. 3).

In one embodiment, the maximum transmit power of the overlapping portion may be the maximum transmit power (P CMAX (i + 1)) of the following subframe (subframe i + 1). FIG. 4 shows a case where the maximum transmission power of the overlapping portion is the maximum transmission power (P CMAX (i + 1)) of the following subframe (subframe i + 1).

(PUSCH / PUCCH / PRACH) in the subframe i + 1 when the maximum transmission power of the overlapping portion is the maximum transmission power (P CMAX (i)) of the preceding subframe (subframe i) The discontinuity of the maximum transmission power (P CMAX ) can be generated (see the dotted lines in Figs. 3 and 4).

For example, if the maximum transmission power is defined as the maximum transmission power (P CMAX (i)) of the subframe in which the SRS is transmitted in a region where the SRS is partially overlapped with another channel, And whether or not the sum of the transmission powers of the channels (PUSCH / PUCCH / PRACH) exceeds the maximum transmission power (P CMAX (i)). That is, when the sum of the transmission power of the SRS and the transmission power of the channel (PUSCH / PUCCH / PRACH) is equal to or less than the maximum transmission power (P CMAX (i)), SRS transmission is allowed, / PRACH) exceeds the maximum transmission power (P CMAX (i)), the SRS transmission is canceled. If the SRS transmission is canceled because the sum of the transmission power of the SRS and the transmission power of the channel (PUSCH / PUCCH / PRACH) exceeds the maximum transmission power (P CMAX (i)), PRACH) is defined as P CMAX (i), and the maximum transmission power of the channel (PUSCH / PUCCH / PRACH) in the remaining interval is defined as P CMAX (i + 1). Therefore, although the SRS is not transmitted, unnecessary maximum transmission power discontinuity may occur in the transmission interval of the channel (PUSCH / PUCCH / PRACH) due to the influence of the SRS.

In the case where discontinuity occurs in one subframe in the PUSCH / PUCCH / PRACH transmission, when transmission of a signal through a channel has amplitude information such as QAM (Quadrature Amplitude Modulation), transmission power May cause performance degradation.

In addition, in multi TA, overlap occurs between SRS and another channel (PUSCH / PUCCH / PRACH), and the sum of the transmission power of SRS and the transmission power of another channel (PUSCH / PUCCH / PRACH) P CMAX ), the transmission of the SRS may be canceled. Therefore, when the maximum transmission power (P CMAX ) is defined in a region where the SRS is partially overlapped with another channel (PUSCH / PUCCH / PRACH), it is preferable that the SRS transmission subframe whose transmission is uncertain is given a low priority.

Therefore, the maximum transmission power of the overlapping portion may be the maximum transmission power (P CMAX (i + 1)) of the following subframe (subframe i + 1).

In another embodiment, the maximum transmit power of the overlapping portion is the maximum transmit power of the preceding subframe (subframe i) (P CMAX (i)) and the maximum transmit power of the succeeding subframe (subframe i + 1) CMAX (i + 1)). In this case, the opportunity for SRS transmission may increase.

5 is the maximum transmission power of the overlapping portion of the maximum transmission of the maximum transmission power (P CMAX (i)) the sub-frame (sub-frame i + 1) succeeding to the preceding sub-frame (sub-frame i) to the power (P CMAX ( i + 1)). Although the PUSCH / PUCCH / PRACH transmission power in the preceding subframe (subframe i) and the PUSCH / PUCCH / PRACH transmission power in the following subframe (subframe i + 1) are shown to be the same in FIG. 5, have.

In the example of FIG. 5, since the SRS is transmitted in the last symbol of the subframe, the sum of the transmission powers of the PUSCH / PUCCH / PRACH becomes the total transmission power in other intervals except for the last symbol of the subframe i, In the last symbol, the total transmission power is the sum of the transmission power of PUSCH / PUCCH / PRACH and the transmission power of SRS.

5, the sum of the transmission power of the PUSCH / PUCCH / PRACH and the transmission power of the SRS is smaller than the maximum transmission power (P CMAX (i)) of the preceding subframe (subframe i) Is larger than the maximum transmission power (P CMAX (i + 1)) of frame i + 1. The maximum transmission power of the overlapping portion is the maximum transmission power of the subframe (subframe i) (P CMAX (i)) and the maximum transmission power (P CMAX (i + 1)) of the following subframe (subframe i + PUSCH / PUCCH / PRACH and the transmission power of the SRS in the case of the maximum transmission power (P CMAX (i + 1)) of the trailing subframe (subframe i + The SRS transmission can be canceled because the sum is greater than the maximum transmit power. In contrast, the maximum transmit power of the overlapping part sub-frame (sub-frame i) maximum transmit power (P CMAX (i)) and the maximum transmission power of the trailing sub-frame (sub-frame i + 1) to (P CMAX of the (i + 1)), a large value of the preceding sub-frame (sub-frame i) maximum transmit power (P CMAX (i)) in the case (Fig solid line 5), PUSCH / PUCCH / sum of the transmission power and transmission power of the SRS of the PRACH in that Is smaller than the maximum transmission power, the SRS transmission can be allowed.

FIG. 6 illustrates a configuration of a terminal according to an embodiment.

Referring to FIG. 6, the terminal 600 includes a control unit 610 and a transmission unit 620. The terminal 600 communicates with the base station using a plurality of serving cells, and a plurality of serving cells can be classified into a plurality of TAGs (Timing Advanced Groups) having different subframe transmission start times. Therefore, in the subframe i of the serving cell belonging to one TAG, the uplink transmission may overlap with the first symbol of the uplink transmission in the subframe i + 1 of the serving cell belonging to another TAG.

The controller 610 sets the maximum transmission power in a partial overlap.

In one embodiment, the controller 610 sets the maximum transmit power at the overlapping portion to the maximum transmit power (P CMAX (i + 1)) of the subframe i + 1.

In another embodiment, the controller 610 determines the maximum transmit power in the overlapping portion as the maximum transmit power (P CMAX (i)) of subframe i and the maximum transmit power (P CMAX (i + 1) Is set to the maximum value.

The controller 610 controls the power of the uplink transmission using the maximum transmission power in the overlapping portion.

Both SRS and PUSCH / PUCCH / PRACH transmission can be allowed if the sum of the SRS and PUSCH / PUCCH / PRACH transmission power is less than the maximum transmission power in the overlapping portion.

If the sum of the SRS and PUSCH / PUCCH / PRACH transmission power is greater than the maximum transmission power in the overlapping portion, the transmission of the SRS may be canceled.

If the sum of the PUSCH / PUCCH / PRACH transmission powers is greater than the maximum transmission power in the overlapping portion, the power for transmission of the PRACH is allocated first, and the remaining power may be allocated for the PUSCH / PUCCH transmission.

The transmission unit 620 transmits SRS, PUSCH, PUCCH, and / or PRACH with the transmission power allocated by the control unit 610. [

FIG. 7 illustrates a method of controlling transmission power of a UE according to an embodiment of the present invention.

The transmission power control method of a terminal shown in FIG. 7 communicates with a base station using a plurality of serving cells, and a plurality of serving cells can be classified into a plurality of TAGs (Timing Advanced Groups) Lt; / RTI > terminal. In such a UE, in the subframe i of the serving cell belonging to one TAG, the uplink transmission may overlap with the first symbol of the uplink transmission in the subframe i + 1 of the serving cell belonging to another TAG.

Referring to FIG. 7, a UE sets a maximum transmission power in a partial overlap (S710).

In one embodiment, the terminal sets the maximum transmit power at the overlapping portion to the maximum transmit power (P CMAX (i + 1)) of subframe i + 1.

In another embodiment, the UE determines the maximum transmit power in the overlapping portion as the maximum one of the maximum transmit power (P CMAX (i)) of subframe i and the maximum transmit power (P CMAX (i + 1)) of subframe i + .

After setting the maximum transmission power in the overlapping part, the terminal controls the power of the uplink transmission using the maximum transmission power in the overlapping part (S720).

Both SRS and PUSCH / PUCCH / PRACH transmission can be allowed if the sum of the SRS and PUSCH / PUCCH / PRACH transmission power is less than the maximum transmission power in the overlapping portion.

If the sum of the SRS and PUSCH / PUCCH / PRACH transmission power is greater than the maximum transmission power in the overlapping portion, the transmission of the SRS may be canceled.

If the sum of the PUSCH / PUCCH / PRACH transmission powers is greater than the maximum transmission power in the overlapping portion, the power for transmission of the PRACH is allocated first, and the remaining power may be allocated for the PUSCH / PUCCH transmission.

In step S730, the MS transmits SRS, PUSCH, PUCCH, and / or PRACH with the allocated transmission power.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

Claims (4)

A terminal for communicating with a base station using a plurality of serving cells classified into a plurality of TAGs (Timing Advance Groups)
When the uplink transmission in the subframe i (i is an integer equal to or greater than 0) of the serving cell belonging to one TAG overlaps with a part of the first symbol of the uplink transmission in the subframe i + 1 of the serving cell belonging to another TAG, And setting a maximum transmission power of the subframe i + 1 to a maximum transmission power of the subframe i + 1 and controlling power of uplink transmission based on the set maximum transmission power. A terminal for communicating with a base station using a plurality of serving cells classified into a plurality of TAGs (Timing Advance Groups)
When the uplink transmission in the subframe i (i is an integer equal to or greater than 0) of the serving cell belonging to one TAG overlaps with a part of the first symbol of the uplink transmission in the subframe i + 1 of the serving cell belonging to another TAG, The maximum transmission power is set to a maximum value among the maximum transmission power of the subframe i and the maximum transmission power of the subframe i + 1, and the power of the uplink transmission is controlled based on the set maximum transmission power . A method of controlling transmission power in a terminal communicating with a base station using a plurality of serving cells classified into a plurality of TAGs (Timing Advance Groups)
If the uplink transmission overlaps with a part of the first symbol of the uplink transmission of the subframe i + 1 of the serving cell belonging to another TAG, in the subframe i (i is an integer of 0 or more) of the serving cell belonging to one TAG, Setting the maximum transmit power at the maximum transmit power of subframe i + 1; And
And controlling power of an uplink transmission based on the set maximum transmission power. A method of controlling transmission power in a terminal communicating with a base station using a plurality of serving cells classified into a plurality of TAGs (Timing Advance Groups)
If the uplink transmission overlaps with a part of the first symbol of the uplink transmission of the subframe i + 1 of the serving cell belonging to another TAG, in the subframe i (i is an integer of 0 or more) of the serving cell belonging to one TAG, Setting a maximum transmission power to a maximum value among a maximum transmission power of subframe i and a maximum transmission power of subframe i + 1; And
And controlling power of an uplink transmission based on the set maximum transmission power.
KR1020120125969A 2012-11-08 2012-11-08 User equipment and transmission power control method thereof KR20140059474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120125969A KR20140059474A (en) 2012-11-08 2012-11-08 User equipment and transmission power control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120125969A KR20140059474A (en) 2012-11-08 2012-11-08 User equipment and transmission power control method thereof

Publications (1)

Publication Number Publication Date
KR20140059474A true KR20140059474A (en) 2014-05-16

Family

ID=50889280

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120125969A KR20140059474A (en) 2012-11-08 2012-11-08 User equipment and transmission power control method thereof

Country Status (1)

Country Link
KR (1) KR20140059474A (en)

Similar Documents

Publication Publication Date Title
US11729833B2 (en) Enhanced random access channel (RACH) procedure
US10455482B2 (en) Flexible adjustment of uplink and downlink ratio configuration
US10542562B2 (en) Apparatus and method for managing random access channel configuration in wireless communication system
US9872181B2 (en) Method for transmitting data on unlicensed band and base station therefor
US11350380B2 (en) Method and apparatus for shifting boundary of uplink subframe or uplink slot in wireless communication system
US9967828B2 (en) Method and apparatus for deciding maximum uplink transmission power in wireless communication system
CN106256160B (en) Method for transmitting and receiving signal for device-to-device communication in wireless communication system and apparatus therefor
US10952249B2 (en) Method for transmitting uplink signal through multiple unlicensed component carriers in wireless communication system supporting unlicensed band, and device supporting same
WO2021084333A1 (en) Transmission using an adapted downlink waveform type
US10680784B2 (en) Method and apparatus for controlling downlink HARQ timing in TDD environment
KR20150113017A (en) Method and apparatus for performing initial access procedure in wireless communication system
CN105309017B (en) Method for controlling transmission power in wireless communication system supporting change of usage of wireless resource and apparatus therefor
WO2013025058A2 (en) Method for transmitting sounding reference signal in base station cooperative wireless communication system and apparatus for same
EP3304995B1 (en) First communication device, second communication device and methods therein for sending and decoding, respectively, downlink information
US10243633B2 (en) Method and apparatus for selecting antenna for dual connectivity in wireless communication system
US10187168B2 (en) Method for performing network assisted interference cancellation and suppression in situation in which carrier aggregation is set, and user equipment
KR20220034839A (en) Method and apparatus for receiving random access response and method and apparatus for transmitting random access response in two-step random access
AU2012367384A1 (en) User equipment, network node and method for applying power scaling to uplink transmissions
US20180310210A1 (en) Method and apparatus for supporting fast handover in wireless communication system
US20230065671A1 (en) Transmit power prioritization in inter-band carrier aggregation
US20230136223A1 (en) Communication configuration based on random access bandwidth
KR102085195B1 (en) Methods for transmitting and receiving pusch for coverage enhancement and apparatuses thereof
KR20140059474A (en) User equipment and transmission power control method thereof
US20230354270A1 (en) Method and apparatus for coexistence between long term evolution sidelink and new radio sidelink
WO2021203281A1 (en) Bandwidth selection for communicating random access information

Legal Events

Date Code Title Description
N231 Notification of change of applicant
WITN Withdrawal due to no request for examination