CN104769866B - Control up-link power - Google Patents

Control up-link power Download PDF

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Publication number
CN104769866B
CN104769866B CN201380053516.6A CN201380053516A CN104769866B CN 104769866 B CN104769866 B CN 104769866B CN 201380053516 A CN201380053516 A CN 201380053516A CN 104769866 B CN104769866 B CN 104769866B
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China
Prior art keywords
srs
transmission
user equipment
pusch
pucch
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CN201380053516.6A
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Chinese (zh)
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CN104769866A (en
Inventor
卢珉锡
崔宇辰
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Google LLC
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KT Corp
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Priority to CN201510263761.0A priority Critical patent/CN104853424B/en
Priority claimed from PCT/KR2013/009078 external-priority patent/WO2014058257A1/en
Publication of CN104769866A publication Critical patent/CN104769866A/en
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    • 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
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • 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
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • 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
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

This disclosure relates to the uplink reference signals for being multiplexed uplink channel and transmitting on uplink, and control up-link power in a user device in the case of carrier aggregation.More specifically, the method for controlling up-link power in a user device includes：Configure multiple time advance groups (TAG)；And transmitted for detection reference signal (SRS) and physical uplink link shared channels (PUSCH) while on same cells and perform resource impact, wherein, the resource impact is done so that the last symbol of transmission PUSCH subframe is not mapped to the resource unit for PUSCH.

Description

Control up-link power
Technical field
This disclosure relates to be multiplexed uplink channel in a user device in the case where carrier aggregation is employed and upper The uplink reference signals transmitted on line link, and control up-link power.
Background technology
Carrier aggregation (CA) is transmission and reception of the signal by two or more component carrier.In carrier aggregation In, user equipment can to transmission/receiving point simultaneous transmission uplink channel (such as uplink data channel and/or on Uplink Control Channel) and uplink signal.In this case, typically, the single transmission time of user equipment shifts to an earlier date Amount (TA) value by same puts on all different component carriers or all different service cells.Here, TA values are transmitted by passing Defeated/receiving point is pointed out.
However, in the case of the multiple transmission TA values pointed out for user equipment, it may be necessary to uplink channel with not Between uplink signal on same component carrier (either serving cell) or component carrier group (or serving cell group) Multiplexing and/or Poewr control method are different from the multiplexing in the case of single TA and/or Poewr control method.
The content of the invention
To the solution of problem
According at least one embodiment, a kind of side for being used to control up-link power in a user device can be provided Method.Methods described can include：Configure multiple time advance groups (TAG)；And for detection reference signal (SRS) and physically Ink Shared Channel (PUSCH) is transmitted to perform resource impact while on same cells.Here, the resource impact can To be done so that the last symbol of transmission PUSCH subframe is not mapped to the resource unit for PUSCH.
According to another embodiment, a kind of method for being used to control up-link power in a user device can be provided. Methods described can include：Configure multiple time advance groups (TAG)；And physically ink Shared Channel (PUSCH) and At least one and detection reference signal (SRS) in physical uplink control channel (PUCCH) is while on different districts SRS transmission is controlled in the case of transmission.Here, the control can include：If overall transmission power transmits on different districts Exceed user equipment most on the lap between at least one symbol in SRS symbol and transmission PUSCH and PUCCH Transimission power (P can be allowed greatlyCMAX) then abandon SRS.
According to another embodiment, a kind of method for being used to control up-link power in a user device can be provided. Methods described can include：Configure multiple time advance groups (TAG)；And in multiple detection reference signals (SRS) different small SRS transmission power is determined in area in the case of simultaneous transmission.Here, the determination can include：If overall transmission power is passing Maximum on lap between defeated multiple SRS symbol more than user equipment can allow transimission power then same by performing Proportional zoom determines each SRS transimission power.
According to another embodiment, a kind of user equipment can be provided.The user equipment can include：Receiver and control Processor.The receiver can be configured as receiving the configuration information associated with multiple time advance groups (TAG).The control Processor processed can be configured as (i) and configure multiple TAG, and (ii) is directed to detection reference signal (SRS) and physical uplink chain Road shared channel (PUSCH) is transmitted to perform resource impact while on same cells.Here, the resource impact can be by Perform so that the last symbol of transmission PUSCH subframe is not mapped to the resource unit for PUSCH.
According to another embodiment, a kind of user equipment can be provided.The user equipment can include receiver and control Processor processed.The receiver can be configured as：Receive the configuration information associated with multiple time advance groups (TAG).Institute State control processor and can be configured as (i) and configure multiple TAG, and (ii) physically ink Shared Channel (PUSCH) It is same on different districts with least one and detection reference signal (SRS) in physical uplink control channel (PUCCH) When transmission in the case of control SRS transmission.Here, the control processor can be configured as：If overall transmission power is not With on any lap between at least one symbol in the symbol and transmission PUSCH and PUCCH that SRS is transmitted in cell Maximum more than user equipment can allow transimission power (PCMAX) then abandon SRS.
According to another embodiment, a kind of user equipment can be provided.The user equipment can include receiver and control Processor processed.The receiver can be configured as：Receive the configuration information associated with multiple time advance groups (TAG).Institute Stating control processor can be configured as：(i) multiple TAG are configured；And (ii) is in multiple detection reference signals (SRS) in difference SRS transmission power is determined in cell in the case of simultaneous transmission.Here, if overall transmission power is transmitting multiple SRS symbol Between lap on exceed the maximum of user equipment and can allow transimission power then each SRS transimission power can be by holding Row same ratio is scaled to determine.
Brief description of the drawings
Fig. 1 is the schematic diagram for showing the wireless communication system that at least one embodiment can be applied to；
Fig. 2 be show according to the use PUCCH format 2 of at least one embodiment come simultaneous transmission HARQACK/NACK and CSI schematic diagram；
Fig. 3 be show one or more uplink data in the case where applying single Timing Advance (TA)/ The schematic diagram of control channel and SRS concept；
Fig. 4 shows the different component carriers (or serving cell) in the case where pointing out multiple transmission TA values of user equipment Either between component carrier group (or serving cell group) and one or more uplink data/control channel and Overlapping Symbol or conflict between SRS；
Fig. 5 is to show the flow chart for being used to control the method for up-link power in a user device according to embodiment 1；
Fig. 6 is to show the schematic diagram for being used to control the concept of up-link power in a user device according to embodiment 1；
Fig. 7 is to show the flow chart for being used to control the method for up-link power in a user device according to embodiment 2；
Fig. 8 is to show the schematic diagram for being used to control the concept of up-link power in a user device according to embodiment 2；
Fig. 9 is to show the flow chart for being used to control the method for up-link power in a user device according to embodiment 3.
Figure 10 is to show the signal for being used to control the concept of up-link power in a user device according to embodiment 3 Figure；
Figure 11 is to show the system flow chart for being used to control the method for up-link power according to other embodiments；
Figure 12 is the schematic diagram for showing transmission/receiving point according to some embodiments；And
Figure 13 is the schematic diagram for showing the user equipment according to some embodiments.
Embodiment
Hereinafter, the exemplary embodiment of the present invention will be described in reference to the drawings.In the following description, it is although identical Element is illustrated in different figures but identical element will be specified by same reference numeral.Moreover, under the present embodiment In the description of face, being described in detail in when it does not know subject of the present invention for the known function that includes herein and configuration will be by Omit.
It can be widely used according to the wireless communication system of at least one embodiment, in order to provide various communication services Such as voice service, packet data service etc..Wireless communication system can include：User equipment (UE) and it is at least one transmission/ Receiving point.In this manual, term " user equipment (UE) " is used as the universal for including the terminal in radio communication.Cause This, user equipment (UE) should be construed to include movement station (MS), user terminal (UT), subscriber station (SS) and/or whole world movement Wireless device and WCDMA (WCDMA), Long Term Evolution (LTE) and/or high-speed packet in communication system (GSM) connect Enter the concept of the user equipment used in (HSPA).
Transmission/receiving point can indicate the station to be communicated with user equipment.This transmission/receiving point is properly termed as different terms Such as base station (BS), cell, Node-B, evolution Node-B (eNB), sector, website, base station transceiver system (BTS), access point (AP), via node (RN), long distance wireless dateline (RRH), radio unit (RU) and antenna etc..
I.e., in this manual, base station (BS) or cell can be interpreted instruction by CDMA (CDMA) A part of regions of covering such as eNB in Node-B, LTE or sector (website) in base station controller (BSC), WCDMA or The containing concept of function.Therefore, the concept of transmission/receiving point, base station (BS) and/or cell can include various overlay areas, Such as big cell, macrocell, Microcell, picocell, Femto cell etc..Moreover, this conception of species can include via node (RN), the communication range of long distance wireless dateline (RRH) or radio unit (RU).
In this manual, user equipment and transmission/receiving point can be with the two transmission/reception master for containing meaning Body, two transmission/reception main body be used for realize presently disclosed technology and technological concept, and can be not limited to concrete term or Person's word.Moreover, user equipment and transmission/receiving point can be to be passed with the up-link or downlink for containing meaning Defeated/to receive main body, the up-link or downlink transmission/reception main body are used to realize the disclosed skill relevant with the present invention Art and technological concept, and concrete term or word can be not limited to.Herein, up-link (UL) is transmitted/is received as Scheme wherein by data from user device transmissions to base station.Alternatively, downlink (DL) is transmitted number/is received as wherein According to the scheme that user equipment is transferred to from base station.
Wireless communication system can use various Multiple Access schemes such as CDMA, time division multiple acess (TDMA), frequency division multiple access (FDMA), OFDM (OFDMA), OFDM-FDMA, OFDM-TDMA, OFDM-CDMA etc..However, this Multiple Access scheme Not limited to this.At least one embodiment can apply to evolving to LTE and LTE- by GSM, WCDMA and HSP Resource allocation in advanced (LTE-A) asynchronous wireless communication field and evolve to CDMA, CDMA-2000 and UMB Sychronous wireless communication field in resource allocation.The present invention be not construed as being limited by the specific wireless communications field or Constraint, and all technical fields that the spirit that should be interpreted as including the present invention may apply to.
In the case of up-link transmission and downlink transmission, in time division multiplexing (TDD) and frequency division multiplexing (FDD) It is at least one to be used.Herein, TDD can be transmitted using different time to perform uplink/downlink. FDD can be transmitted using different frequency to perform uplink/downlink.
In the LTE or lte-a system consistent with corresponding standard, a carrier wave or a pair of carrier waves can be based on come structure Build up-link and/or downlink., can be by control channel for example in the case of up-link and/or downlink Physical downlink control channel (PDCCH), Physical Control Format Indicator Channel (PCFICH), physical mixed ARQ instruction channels (PHICH), physical uplink control channel (PUCCH) etc. transmits control information.Data channel such as physics can be passed through Downlink sharied signal channel (PDSCH), physical uplink link shared channels (PUSCH) etc. transmit data.In this manual, PDCCH can be the concept for including EPDCCH.
In this manual, the signal that term " cell " can indicate to transmit from transfer point or transmission/receiving point covers One in lid, the component carrier with the covering and transmission/receiving point.Herein, term " transmission/receiving point " can be with Indicate one in transfer point, the receiving point of reception signal of transmission signal and combinations thereof (i.e. transmission/receiving point).
In this manual, term " HARQ ACK/NACK " be " hybrid automatic repeat-request (HARQ)-confirmation (ACK)/ The abbreviation of NACK (NACK) ", and be properly termed as hybrid-ARQ and confirm or mix ack/nack signal.Channel status is believed Breath (CSI) may refer to channel status information reports such as order instruction (RI) pre-coding matrix instruction (PMI) and channel amount instruction (CQI)。
Fig. 1 is the schematic diagram for showing the wireless communication system that at least one embodiment can be applied to.
Reference picture 1, wireless communication system 100 can be cooperative multipoint transmission/reception (CoMP) system, cooperation multi-antenna transmitting One in defeated system and cooperation multi-cell communication systems.Here, CoMP system can be by between multiple transmission/receiving points Cooperation carry out transmission signal.Such as CoMP system of wireless communication system 100 can include multiple transmission/receiving points 110 and 112 with And at least one user equipment (UE) 120 and 122.
As illustrated, transmission/receiving point can be the first transmission/receiving point (such as eNB 110) and the second transmission/reception One in point (such as RRH 112).Here, the first transmission/receiving point (such as eNB 110) can be base station or macrocell (or grand node).Second transmission/receiving point (such as RRH 112) can be by optical cable or fiber coupling to the first transmission/ Receiving point (such as eNB 110) is come at least one picocell for controlling through a cable.In addition, the second transmission/receiving point (such as RRH 112) can have large transmission power or low transmission power in macrocell.First transmission/receiving point and second transmission/ Receiving point (such as eNB110 and RRH 112) can have same cells mark (ID) or different districts mark.
Hereinafter, downlink (DL) can represent the communication from transmission/receiving point 110 and 112 to user equipment 120 Or communication path.Up-link (UL) can represent from user equipment 120 to the communication of transmission/receiving point 110 and 112 or Communication path.In the downlink, emitter can be a part for transmission/receiving point 110 and 112, and receiver can be with For a part for user equipment 120 and 122.In the uplink, emitter can be a part for user equipment 120, and Receiver can be a part for transmission/receiving point 110 and 112.
Hereinafter, wherein transmitting or receiving letter such as PUCCH, PUSCH, PDCCH and/or PDSCH by channel Number situation be properly termed as " transmission or the expression for receiving PUCCH, PUSCH, PDCCH and/or PDSCH ".
With a corresponding first transmission/receiving point in transmission/receiving point (for example, 110 and 112) (for example, eNB 110) downlink transmission of user equipment 120 and 122 can be gone to.First transmission/receiving point (for example, eNB 110) can To transmit PDSCH corresponding with primary physical channel, for unicast transmission.Moreover, the first transmission/receiving point is (for example, eNB 110) PDCCH can be transmitted, in order to which communicating downlink control information for the scheduling required for receiving PDSCH (for example, believe Breath) and transmit for uplink data channel (such as PUSCH) transmission scheduling authorization information.Hereinafter, " letter is passed through Transmit either reception signal in road " it is properly termed as the expression of " transmission receives channel ".
As described in Figure 1, the first user equipment (UE1) 120 can be in the first transmission/receiving point (such as eNB110) transmission Downlink signal.Second user equipment (UE2) 122 can pass to second in multiple transmission/receiving points (such as 110 and 112) Defeated/receiving point (such as RRH 112) transmitting uplink signals.Alternatively, the first user equipment (UE1) can pass to second Defeated/receiving point (such as RRH 112) transmitting uplink signals, and second user equipment 122 can be to the first transmission/reception Point (such as eNB 110) transmitting uplink signals.Different from Fig. 1, two or more user equipment can be included in In wireless communication system 100.However, for convenience, wireless communication system 100 will be described as including two user equipmenies 120 and 122, one to the first transmission/receiving point (such as eNB 110) transmitting uplink signals, and another is to second Transmission/receiving point (such as RRH 112) transmitting uplink signals.
In this case, as described later, the first user equipment (UE1) 120 can be to the first transmission/receiving point (example Such as eNB 110) transmitting uplink signals, and second user equipment (UE2) 122 can to the second transmission/receiving point (such as RRH 112) transmitting uplink signals.
In a wireless communication system, when performing up-link transmission, user equipment can each slot transmission uplink Road demodulated reference signal (UL DMRS or UL DM-RS) so that identify the channel information for demodulating data channel.With In the case of up-link DM-RS associated PUSCH, user equipment can be transmitted with reference to letter by every one symbol of time slot Number.In the case of the up-link DM-RS associated with PUCCH, user equipment can pass through different numbers according to PUCCH format The symbol of amount carrys out transmission of reference signals.For example, PUCCH format 1/1a/1b (i.e. PUCCH format 1, PUCCH format 1a and PUCCH format 1b) in the case of, can be by every three symbols of time slot come transmission of reference signals.In PUCCH format 2/2a/2b/ In the case of 3 (i.e. PUCCH format 2, PUCCH format 2a and PUCCH format 2b and PUCCH formats 3), can by it is per when Two symbols of gap carry out transmission of reference signals.
PUCCH is used as uplink control channel and the form classified with basis from the information type of user device transmissions It is associated.Following table 1 shows PUCCH format.
[table 1]
PUCCH format Modulation scheme Quantity (the M of position per subframebit)
1 N/A N/A
1a BPSK 1
1b QPSK 2
2 QPSK 20
2a QPSK+BPSK 21
2b QPSK+QPSK 22
3 QPSK 48
PUCCH format 1/1a/1b (i.e. PUCCH format 1, PUCCH format 1a and PUCCH format 1b) can be used for transmitting Dispatch request (SR) and HARQ-ACK.PUCCH format 2/2a/2b (i.e. PUCCH format 2, PUCCH format 2a and PUCCH format It 2b) can be used for transmission channel quality instruction (CQI), pre-coding matrix instruction (PMI) and order instruction (RI).PUCCH format 3 It can be used for transmitting multiple HARQ ACK/NACK.
Hereinafter, each PUCCH format and its use will be described in further detail.
PUCCH format 1 is that the channel format of (SR) is asked for only transmitting and scheduling.PUCCH format 1a/1b (i.e. PUCCH lattice Formula 1a and PUCCH format 1b) it is to ask (SR) and/or ACK/NACK channel format for transmitting and scheduling for downlink Data channel.Herein, PUCCH format 1a/1b can divide according to the quantity and corresponding modulating scheme of ACK/NACK position Class.Meanwhile in the case of the PUCCH format 1a/1b associated with ACK/NACK transmission, (puncture) subframe can be punched Last SC-FDMA symbols.In this case, it is properly termed as " contracting using the PUCCH format 1a of the SC-FDMA symbols of punching Short PUCCH format 1a ".Similarly, it is properly termed as " the PUCCH of shortening using the PUCCH format 1b of the SC-FDMA symbols of punching Form 1b ".Can be based on the associated high-rise RRC parameters (such as " ackNackSRS- provided by transmission/receiving point Simultaneous Transmission ") value (such as "true" or "false") and sounding reference symbol (SRS) cell it is special Information is determined to select and use one in PUCCH format 1/1a/1b.
PUCCH format 2 is that the channel format of (CQI) is indicated for only transmission channel quality.Meanwhile PUCCH format 2a/2b (i.e. PUCCH format 2a and PUCCH format 2b) is " CQI " and " corresponding with the response to down-link data channel for transmitting ACK/NACK " channel format.PUCCH format 2a/2b can divide according to the quantity and modulation scheme of ACK/NACK position Class.
PUCCH format 3 is the letter for transmitting the ACK/NACK of the length with more than four downlink carrier polymerizations Road form.In the case of the PUCCH format 3 associated with ACK/NACK transmission, the last SC-FDMA symbols of subframe can be punched Number.In this case, it is properly termed as " the PUCCH format 3 " of shortening using the PUCCH format 3 of the SC-FDMA symbols of punching. In other words, the last SC-FDMA symbols of the PUCCH format 3 of shortening are not mapped to resource unit.It is potentially based on by transmitting/connecing The associated high-rise RRC parameters (such as " ackNackSRS-Simultaneous Transmission ") provided of sink Value (such as "true" or "false") and SRS cell-specific information select and using PUCCH format 3 and the PUCCH lattice shortened One in formula 3.
Meanwhile in LTE communication system corresponding with wireless communication system, demodulated reference signal (DMRS or DM-RS) It can be defined to be used for up-link with SRS.The reference signal (RS) of three types can be defined to be used for downlink. Herein, the reference signal (RS) of three types can be including the list on cell specific reference signal (CRS), multicast/broadcast Frequency network reference signal (MBSFN-RS) and UE specific reference signals.
Uplink sounding reference signal (SRS) can be used for measuring uplink channel state for up-link frequency Become scheduling.This up-link SRS can be used for measuring uplink channel state and downlink channel status, for Carry out downlink beamforming using channel reciprocity in time division duplex (TDD) system.In the case of up-link SRS, Specific transmission/receiving point or specific cell in wireless communication system 100 can be used for SRS productions to user device transmissions Parameter (is used to generate by the SRS of user device transmissions parameter).Herein, the parameter for SRS generations can include The specific SRS bandwidth of cell, transmission comb, the specific SRS bandwidth of UE, the configuration parameter related to jump, frequency domain position, cycle, subframe Configuration (specifying which subframe to transmit SRS), antenna configuration (specify the transmission SRS quantity of antenna and the number of antenna port Amount), motif column index, cyclic shift index (i.e. for SRS generation reference signal) etc..Herein, transmission comb can refer to The fixed frequency location every the distribution of two kinds of subcarrier spacing.For example, " 0 " can represent even subcarriers, and " 1 " can To represent odd subcarriers.Motif column index can be the SRS sequence index for generating corresponding SRS.It can be based on being used in Sequence group number in PUCCH and SRS sequence index is determined according to the motif row number of sequence hopping configuration definition.It is more specific and Speech, corresponding transmission/receiving point (such as eNB 110) can transmit the parameter conduct for SRS generations to user equipment 120 RRC parameters.User equipment 120 can receive the parameter for SRS generations from eNB 110, and transmit uplink to eNB 110 Road SRS.
Moreover, aperiodic SRS can be defined together with cycle SRS.In the case of aperiodic SRS, as cycle SRS Situation, specific transmission/receiving point can be used to generate aperiodic SRS parameter as RRC parameters to user device transmissions. Herein, can the specific SRS bandwidth of UE including aperiodic SRS, transmission comb, frequency domain position for generating aperiodic SRS parameter Put, the cycle, sub-frame configuration, antenna configuration, motif column index, cyclic shift index etc., as defined in wireless communication system 100 's.
In addition, specific transmission/receiving point can pass through PDCCH Dynamic triggers user equipment 120 so that user equipment 120 Can be with transmission cycle SRS.When receiving trigger signal by PDCCH and RRC parameters, user equipment 120 can transmit uplink The aperiodic SRS in road.
Hereinafter, being transmitted while up-link PUCCH and detection reference signal (SRS) is considered as in a subframe In the case of, it will be described in the operation of corresponding user equipment.
In the case where thinking simultaneous transmission PUCCH and SRS, the operation of corresponding user equipment can be according to PUCCH lattice Formula type and SRS types define (or configuration).Herein, SRS can be categorized into cycle SRS (or herein claim For " SRS " that type 0 triggers) and aperiodic SRS (or be referred to herein as " SRS " of Class1 triggering).Furthermore, it is possible to This operation of user equipment is defined in view of adapting to multiple component carriers.
User equipment can be by according to the operation of SRS types (such as cycle SRS or aperiodic SRS) and PUCCH format It is defined as follows.
(i) in the case of PUCCH format 2/2a/2b transmission and cycle SRS transmission are simultaneous in identical subframe, use Family equipment can not transmission cycle SRS.
(ii) carry ACK/NACK PUCCH format 2/2a/2b transmission and aperiodic SRS transmission in identical subframe it is same In the case of Shi Fasheng, user equipment can not transmit aperiodic SRS.
(iii) do not carry ACK/NACK PUCCH format 2 transmit and aperiodic SRS transmission in identical subframe simultaneously In the case of generation, user equipment can not transmit the PUCCH format 2 without ACK/NACK.
(iv) carry ACK/NACK and dispatch request (SR) the two or one of PUCCH format transmission and SRS transmission In identical subframe it is simultaneous in the case of, if by the parameter " ackNackSRS-Simultaneous that limits of high level When Transmission " is FALSE, user equipment can not transmit SRS.Herein, SRS can be cycle SRS and non-week Phase SRS.
(v) carry both ACK/NACK and positive SR or one of shortening PUCCH format transmission and SRS transmission in phase In the case of simultaneous in subframe, if the parameter " ackNackSRS-Simultaneous limited by high level When Transmission " is TRUE, user equipment can transmit both SRS and the PUCCH format shortened.Herein, SRS can Think cycle SRS and aperiodic SRS.
(vi) using standard PUCCH format come carry both ACK/NACK and positive SR or one of PUCCH transmission and In the case of SRS transmission on serving cell is simultaneous in identical subframe, user equipment can not transmit SRS.Herein In, SRS can be cycle SRS and aperiodic SRS.
(vii) simultaneously, parameter " ackNackSRS-SimultaneousTransmission " can provide work by high level For RRC parameters.This RRC parameters are determined for whether user equipment is configured as supporting the HARQ ACK/ on PUCCH Transmitted while NACK and SRS is in identical subframe.It is configured as supporting the HARQ ACK/NACK on PUCCH in user equipment In the case of being transmitted while with SRS in a subframe, if corresponding subframe be in view of first community (such as main plot, Principal component carrier wave, P cells) the specific SRS of cell, then user equipment can using shorten PUCCH format come pass simultaneously Defeated HARQ ACK/NACK and SRS.Here, the PUCCH format of shortening can be without concerning whether SRS is passed in corresponding subframe It is defeated and use.If corresponding subframe is not the specific SRS of cell of first community, user equipment can use standard PUCCH One in form 1/1a/1b or standard PUCCH format 3 performs HARQ ACK/NACK and SRS transmission.
Hereinafter, will describe to be used for simultaneous transmission ACK/NACK and week in a subframe on up-link PUCCH The operation of phase CSI user equipment.
Fig. 2 be show according to the use PUCCH format 2 of at least one embodiment come simultaneous transmission HARQACK/NACK and CSI schematic diagram.
Reference picture 2 (a), in the case of standard cyclic prefix (CP), simultaneous transmission can be carried out using PUCCH format 2 HARQ ACK/NACK and CSI.In this case, CSI transmit information can be block code and modulated using QPSK.Therefore, Each subframe can include ten symbols.Above five symbols can transmit in the first slot, and remaining five symbols It can be transmitted in the second time slot.
Each time slot can include seven DFTS-OFDM symbols.In seven DFTS-DFDM symbols in each time slot, Two symbols can be used for transmitting up-link DM-RS.As simultaneous transmission HARQ ACK/NACK, second in each time slot DM-RS can be adjusted by HARQ ACK/NACK.One in BPSK modulation schemes and QPSK modulation schemes can be according to feedback Information is " the HARQ ACK/NACK " of one or " the HARQ ACK/NACK " of two are used.In each time slot, it is to be passed In five defeated QPSK symbols each and second modulation DM-RS symbols can be multiplied by cyclic shift length 12 cell Particular sequence.Herein, the DM-RS symbols of the second modulation can be in the DM-RS symbols in each time slot, by HARQ 2nd DM-RS symbols of ACK/NACK modulation.Multiplication result can transmit in corresponding DFTS-OFDM symbols.
Reference picture 2 (b), can in the case of the extended cyclic prefix (CP) with every six DFTS-OFDM symbols of time slot To use identical structure.However, each time slot can include a up-link DM-RS symbol and replace two up-links DM-RS symbols.CSI transmit information and HARQ ACK/NACK can be block code and modulated using QPSK modulation schemes.Cause This, each subframe can include ten symbols.In this case, five symbols can transmit in the first slot before, and And remaining five symbols can transmit in the second time slot.Each each in time slot in five QPSK symbols waiting for transmission It is multiplied by the cell-specific sequence of the length 12 of cyclic shift.Multiplication result can transmit in corresponding DFTS-OFDM symbols.
For example, parameter " simultaneousAckNackAndCQI " can be used as RRC parameters by high level offer.This RRC Parameter is determined for whether user equipment is configured as supporting HARQ ACK/NACK and cycle CSI in identical subframe Simultaneous transmission.If user equipment is configured as supporting to transmit while HARQACK/NACK and cycle CSI is in a subframe, Then user equipment can come simultaneous transmission HARQ-ACK and cycle CSI using the PUCCH format 2a/2b in corresponding subframe.
Hereinafter, will be according to whether transimission power limitation be present to describe Poewr control method.In other words, in two kinds of feelings Under condition (such as power limited situation and non-power limited situation), it will be described in for performing Power Control with carrier aggregation Method.Specifically, will be described in be used under carrier aggregation perform (i) uplink transmission channels between, (ii) it is up The method of Power Control between link channel and SRS, and/or (iii) SRS.
While user equipment is configured as supporting PUCCH and PUSCH in the case of transmission, if user equipment is total Transimission power exceedesThen user equipment can determine the transimission power for PUCCH first, and it is then determined that surplus Corresponding PUSCH in remaining available transimission power, for serving cell (" c ") transimission power.In this case, use Family equipment can be by determining PUSCH transmission work(by numerical value of the PUSCH transmission power bi-directional scaling between " 0 " and " 1 " Rate (i.e. PUSCH transimission power).
In the case described above, user equipment can be determined according to following formula 1 corresponding to PUSCH transmission work( Rate.User equipment can be to be used for serving cell (" c ") in bi-directional scaling subframe iSo that meet following The condition of formula 1.
[formula 1]
In equation 1,Represent PPUCCH(i) linear value, andRepresent PPUSCH, c(i) Linear value.Represent the peak power output P that the UE in subframe i is always configuredCMAXLinear value.W (i) represents to be used for Serving cell c'sScale factor, wherein, 0≤w (i)≤1.The feelings of PUCCH transmission are not present in subframe i Under condition,
Meanwhile if the overall transmission power of user equipment exceedesThen user equipment can be according to corresponding Whether PUSCH includes uplink control information (UCI) to determine to transmit on different component carriers or different service cells , transimission power between PUSCH.More specifically, user equipment can perform PUSCH transmission power point in this way Match somebody with somebody：The serving cell associated with " PUSCH transmission with UCI " or component carrier are with higher priority.In this feelings Under condition, for " without UCI PUSCH " transimission power can use remaining serving cell between or component carrier it Between the same ratio factor determined by performing power proportions scaling.
In said circumstances, user equipment can determine the transmission work(for corresponding PUSCH according to following formula 2 Rate.If user equipment with serving cell j with UCI PUSCH transmission and one or more remaining service The PUSCH transmission without UCI in any one serving cell in cell, and if the overall transmission power of user equipment surpasses CrossThen user equipment can be directed to the serving cell bi-directional scaling without UCI in subframe i So that meet the condition of following formula 2.
[formula 2]
In formula 2,The PUSCH transmission power for the cell with UCI is represented, and w (i) is use In the serving cell c's without UCIScale factor.In this case, unless And the overall transmission power of user equipment exceedesOtherwise no power proportions scaling can apply to Moreover, as w (i) ＞ 0, w (i) values are identical between serving cell, but small for one or more special services Area, w (i) may be " 0 ".
Meanwhile if the overall transmission power of user equipment exceedesThen user equipment can be performed in difference point Transmitted on loading gage ripple or different service cells " PUCCH/PUSCH with UCI transmission (while i.e. with UCI PUCCH and PUSCH transmission) " the transimission power distribution between " do not have UCI PUSCH transmission ".More specifically, user Equipment can perform transimission power distribution in this manner：(i) PUCCH transimission powers are ensured first, and (ii) second ensures PUSCH transmission power with UCI.In such a case, it is possible to distribute remaining transimission power for the PUSCH without UCI. That is, the transimission power for the PUSCH without UCI can be using between remaining serving cell or between component carrier The same ratio factor is determined by performing power proportions scaling.Herein, for one or more special services cell Or the scale factor of one or more component carrier could be arranged to " 0 ".
In said circumstances, user equipment can be determined according to following formula 3 corresponding to PUSCH transimission power. PUCCH and PUSCH transmission while if user equipment is with serving cell j with UCI and one or more The PUSCH transmission without UCI in any of remaining serving cell serving cell, and if total biography of user equipment Defeated power exceedesThen user equipment can obtain according to following formula 3
[formula 3]
Meanwhile if the overall transmission power of user equipment exceedesThen user equipment can perform divides from different Transimission power distribution between the SRS that loading gage ripple or different service cells are associated.More specifically, the transmission for SRS Power can be using the same ratio factor between remaining serving cell or between component carrier by performing power proportions Scale to determine.
In said circumstances, user equipment can be determined according to following formula 4 corresponding to SRS transimission power.Such as Fruit exceedes for the overall transmission power of SRS user equipmentThen it is used in user equipment bi-directional scaling subframe i Serving cell c'sSo that meet the condition of following formula 4.
[formula 4]
In formula 4,Represent PSRS, c(i) linear value, andRepresent the P in subframe iCMAX Linear value.W (i) is represented for serving cell c'sScale factor, wherein, 0≤w (i)≤1.Herein, w (i) value can be identical between serving cell.
Meanwhile in the case of application carrier aggregation, user equipment can be to transmission/receiving point simultaneous transmission up-link Channel (such as uplink data channel and/or uplink control channel) and uplink signal (such as SRS).This In the case of, single transmission time lead (TA) value (transmission TA values i.e. corresponding with single value) of user equipment can with same Applied to all different component carriers or all different service cells.Herein, transmitting TA values can be from transmission/receiving point In point out.In the case of the single TA of application, associated above-mentioned of multiplexing and/or Power Control between uplink channel Method may be used as the operation of user equipment.
Typically, do not supported for same components carrier wave and/or different component carriers in same-sign generally Uplink channel (such as uplink data channel and/or uplink control channel) and transmit while SRS.This In the case of, if as shown in figure 3, using single TA, it can effectively prevent uplink channel (such as uplink data letter Road and/or uplink control channel) Overlapping Symbol between SRS.
However, in the case where pointing out multiple transmission TA values for user equipment, it may be necessary to different component carriers (or Serving cell) either answering between the uplink channel and uplink signal in component carrier group (or serving cell group) With and/or Poewr control method it is different from the multiplexing in the case of single TA and/or Poewr control method.In other words, one The border of uplink SC-FDMA symbol in subframe may not between different component carriers (either serving cell) or not With accurately occurring between component carrier group (or serving cell group) simultaneously.For this reason, it is understood that there may be when corresponding use When family equipment transmission up-link (such as uplink data channel and/or uplink control channel) and uplink signal Ambiguity.Therefore, transmission/receiving point and corresponding user equipment need not may identify how to perform corresponding user equipment Operation.
In other words, as shown in figure 4, in the case where pointing out for multiple TA values of user equipment, it is understood that there may be difference point Uplink channel between loading gage ripple (either serving cell) or between different component carrier groups (or serving cell group) (such as uplink data channel and/or uplink control channel) and SRS overlapping or collision problem (such as symbol weight Overlapping or conflict in a folded and/or symbol).For example, when CC0 (Pcell) and CC1 (Scell) are configured with different Between in the case of lead group (TAG) (such as TAG0, TAG1), may be in region " 410 " and " 420 " place exists and user equipment Up-link transmission (such as transmission of uplink channel and uplink signal) associated ambiguity.Therefore, passing It also likely to be present in defeated/receiving point associated with extended receiver (reception of uplink channel and uplink signal) Ambiguity.
Therefore, in the case where user equipment is configured with multiple TAG, it may be necessary to limit and by user device transmissions What uplink channel (such as uplink data channel and/or uplink control channel) and uplink signal were associated Multiplexing and Poewr control method.
The present embodiment be related in the case where applying carrier aggregation with the control transmitted on uplink by user equipment The associated transmission of channel processed and multiplexing method.In addition, the present embodiment be related to it is a kind of be used to being multiplexed uplink control channel and SRS method and apparatus.Specifically, in the case of using multiple TAG, the present embodiment can provide the control of (i) up-link Multiplexing and transmission between channel and SRS between (ii) SRS.
More specifically, will by user device transmissions uplink channel (such as uplink control channel and/or Uplink data channel) and SRS under carrier aggregation be in from multiple TAG be associated different component carriers on situation Under, it may be necessary to the operation of latest definition user equipment.
Moreover, in the case where configuring multiple TAG, the present embodiment can define the operation of user equipment so that support to It is compatible afterwards.Meanwhile if backward compatibility need not be supported, the present embodiment may define the newest operation of user equipment.
In this case, although transmission/reception forms multiple TAG for user equipment, if user sets Standby operation is associated with two or more uplink component carrier, then certain components carrier wave may belong to identical TAG. For example, in the case where foring two uplink component carriers, each uplink component carrier may belong to identical TAG.For another example, in the case where forming three uplink component carriers, two uplink component carriers can To belong to identical TAG, and other uplink component carriers may belong to another TAG (i.e. different TAG).
Therefore, when considering above-mentioned plot, with uplink channel (such as uplink control channel and/or up Uplink data channel) and SRS the associated component carrier of transmission belong to identical TAG in the case of, the operation of user equipment can To be defined such that user equipment according to associated with single TA come uplink channel/SRS transmission method for defining (on i.e. The transmission method of line link control/data channel and SRS) operate.
Typically, single TA is generally only supported.However, in the case of multiple TAG are formed, it is simultaneous backward in order to ensure Capacitive, the operation for being formed the user equipment for the component carrier for belonging to identical TAG can also be according to will be by user device transmissions Transimission power whether limited (i.e. according to correspond to devices in power limited situations either non-power limited case) determines (or definition), As described later.
First, weighed completely in the different component carriers that (i) different component carriers belong to identical TAG or belong to different TAG Folded, (ii) it is expected to transmit while PUCCH/PUSCH and SRS, and situation that (iii) transimission power is limited (" situation 1 ") under, The operation of user equipment can be defined as foloows.
For transmitting (being referred to herein as " PUCCH+SRS ") while PUCCH and SRS, if PUCCH format 2 Transmission is overlapping with aperiodic SRS transmission, then the operation of user equipment can be defined to transmit aperiodic SRS.Otherwise, Yong Hushe It is standby to be defined to always be to give up SRS.
For transmitting (being referred to herein as " PUSCH+SRS ") while PUSCH and SRS, if PUSCH includes UCI, the then operation of user equipment can be defined such that the transimission power of the PUSCH with UCI is guaranteed and remaining first Transimission power be used for SRS transmission.In this case, if there is no the remaining transimission power for SRS transmission, then use Family equipment can abandon SRS.
For transmitting (being referred to herein as " PUCCH+PUSCH+SRS ") while PUCCH, PUSCH and SRS, such as The transmission of fruit PUCCH format 2 is overlapping with aperiodic SRS transmission, then the operation of user equipment can be defined such that transmission PUSCH With aperiodic SRS.For PUSCH and aperiodic SRS transimission power, if PUSCH includes UCI, user equipment Operation can be defined such that the transimission power of the PUSCH with UCI is guaranteed first and remaining transimission power is for non- Cycle SRS transmission.
Moreover, in this case, without concerning whether PUSCH includes UCI, the operation of user equipment can be defined to pass Defeated PUSCH, herein, the last symbol retained for SRS transmission in corresponding subframe are perforated so that being that SRS transmission retains most Symbol is not mapped to the resource unit for PUSCH afterwards.In other words, multiple TAG are configured with user equipment and perform SRS In the case of being transmitted with PUSCH while on same cells, user equipment can be defined such that transmission PUSCH subframe Last symbol be not mapped to PUSCH resource unit.Hereafter, Fig. 5 and Fig. 6 such as embodiment 1 are referred to be described in detail Above-described embodiment.
In addition to such case, the operation of user equipment can be defined as always being to give up SRS.Here, it is corresponding Subframe can be the specific aperiodic SRSs of UE or the specific SRS of cell.More specifically, user equipment can by with It is equipped with multiple TAG and performs SRS and PUSCH/PUCCH and is transmitted while on different districts.In this case, if be directed to Given serving cell subframe (such as the SRS transmission of the user equipment in the symbol on subframe i) with for one or more The transmission of the PUCCH/PUSCH in subframe (such as subframe i or subframe i+l) of individual different service cells is overlapping, and if Its overall transmission power is on any lap of the symbol more than PCMAX, then user equipment can abandon related to SRS transmission Subframe (such as the SRS in subframe i) of connection.Hereafter, Fig. 7 and Fig. 8 such as embodiment 2 are referred to above-mentioned implementation is described in detail Example.
For for SRS and transmitting (being referred to herein as " SRS+SRS ") while another SRS, user equipment can be with Using same ratio scale value (i.e. the same ratio factor) SRS transmission power is determined by performing power proportions scaling so that User equipment can operate (even if user equipment operated according to typical or existing UE behaviors) with typical way. More specifically, in this case, if (i) user equipment is configured with multiple TAG and (ii) has transimission power limitation (maximum i.e. on any lap of the overall transmission power between the associated symbol of SRS transmission more than user equipment can Allow transimission power (PCMAX)), then when for different districts simultaneous transmission " SRS and user during another SRS " (" SRS+SRS ") Equipment can determine SRS transmission power using the same ratio factor by performing power proportions scaling.Hereafter, it is referred to figure Above-described embodiment is described in detail in 9 and Figure 10 such as embodiments 3.
Second, weighed completely in the different component carriers that (i) different component carriers belong to identical TAG or belong to different TAG Folded, (ii) it is expected to transmit while PUCCH/PUSCH and SRS, and the situation (" situation that transimission power is limited is not present in (iii) 2 ") under, the operation of user equipment can be defined such that user equipment operates according to the UE described with reference to formula 1 to formula 4 To operate.
3rd, (i) belong to different TAG different component carriers not exclusively overlapping (i.e. partly overlapping), (ii) expectation Transmitted while PUCCH/PUSCH and SRS, and (iii) be present under transimission power limited (" situation 3 "), Yong Hushe Standby operation can be defined as foloows.
For PUCCH+SRS (i.e. being transmitted while PUCCH and SRS), user equipment can abandon corresponding component SRS on carrier wave and only transmit PUCCH.
For PUSCH+SRS (i.e. being transmitted while PUSCH and SRS), user equipment can abandon corresponding component SRS on carrier wave and only transmit PUSCH.
For PUCCH+PUSCH+SRS (i.e. being transmitted while PUCCH, PUSCH and SRS), user equipment can be put SRS corresponding to abandoning on component carrier, and according to the transmission for simultaneous transmission PUCCH and PUSCH (" PUCCH+PUSCH ") Power determining method transmits PUCCH and PUSCH.As described in Example 2, multiple TAG and complete are configured with user equipment It is complete or in the case of partly overlapping in different TAG, it can perform SRS's in different districts and PUSCH/PUCCH Simultaneous transmission.In this case, if overall transmission power transmitted on different districts SRS and PUCCH/PUSCH symbol it Between any lap on exceed user equipment maximum admissible transimission power (PCMAX), then user equipment can be abandoned SRS in the subframe associated with SRS transmission.More specifically, if for given serving cell in subframe (such as subframe I) SRS transmission of the user equipment in symbol on for one or more different service cells in subframe (such as son Frame i or subframe i+l) on PUCCH/PUSCH transmission it is overlapping, and if its overall transmission power in any overlapping of the symbol More than P on partCMAX, then user equipment can abandon the subframe associated with SRS transmission (such as the SRS in subframe i).
For SRS+SRS (i.e. being transmitted while SRS and another SRS), user equipment can use same ratio Scale value (i.e. the same ratio factor) determines SRS transmission power by performing power proportions scaling so that user equipment can be with (even if user equipment operated according to typical or existing UE behaviors) is operated with typical way.Such as the institute of embodiment 3 State, if (i) user equipment is configured with multiple TAG and (ii) has transimission power limitation (i.e. overall transmission power passes with SRS Maximum on any lap between defeated associated symbol more than user equipment can allow transimission power (PCMAX)), then User equipment can use the same ratio factor by performing work(when for different districts simultaneous transmission SRS and another SRS Rate proportional zoom determines SRS transmission power.
4th, (i) belong to different TAG different component carriers not exclusively overlapping (i.e. partly overlapping), (ii) expectation Transmitted while PUCCH/PUSCH and SRS, and (iii) is not present in the situation (" situation 4 ") that transimission power is limited, user The operation of equipment can be defined as foloows.
For PUCCH+SRS (i.e. being transmitted while PUCCH and SRS), user equipment can be intended to be used for SRS biographies Come together to transmit SRS together with PUCCH transmission on defeated component carrier.
For PUSCH+SRS (i.e. being transmitted while PUSCH and SRS), user equipment can be intended to be used for SRS biographies On defeated component carrier together with PUSCH transmission come together transmit SRS.
For PUCCH+PUSCH+SRS (i.e. being transmitted while PUCCH, PUSCH and SRS), user equipment can be It is intended on the component carrier for SRS transmission come together to transmit SRS together with PUCCH transmission and PUSCH transmission.
For SRS+SRS (i.e. being transmitted while SRS and another SRS), user equipment can use same ratio Scale value (i.e. the same ratio factor) determines SRS transmission power by performing power scaling so that user equipment can be with allusion quotation Type mode operates (even if user equipment operated according to typical or existing UE behaviors).
Fig. 5 is to show the flow chart for being used to control the method for up-link power in a user device according to embodiment 1. Fig. 6 is to show the schematic diagram for being used to control the concept of up-link power in a user device according to embodiment 1.
Reference picture 5, according to embodiment 1 be used for control the method (500) of up-link power can be with a user device Including：(i) multiple TAG are configured at step S510 and (ii) performs uplink resource mapping at step S520.
At step S510, user equipment can be configured with multiple TAG by transmission/receiving point (such as base station).User Equipment can receive the configuration information (such as TAG configuration information) associated with multiple TAG from transmission/receiving point, and configure (or formation) multiple TAG.For example, down link control information (such as PDCCH) or height can be passed through from transmission/receiving point Layer signaling (such as RRC information) is to user device transmissions TAG configuration informations.
At step S520, in the case where SRS and PUSCH is transmitted while on same cells, user equipment can be with Perform uplink resource mapping so that the resource unit for PUSCH is mapped to except being distributed for the SRS transmission in subframe Last symbol outside SC-FDMA symbols.
In other words, as shown in fig. 6, in the case where forming multiple TAG (such as TAG0 and TAG1), if user equipment quilt The SRS being defined as in transmitting identical subframe in the cell identical cell with transmitting PUSCH, then it can be directed to PUSCH biographies Defeated associated last symbol performs rate-matched.In this case,, can be with as the multiple TAG of application as shown in Fig. 6 (a) Uplink channel between completely overlapped different component carriers (such as CC0, CC1) or between component carrier group is (on such as Downlink data channel and/or uplink control channel) and SRS.Alternatively, as shown in Fig. 6 (b), multiple TAG are being applied When, the up-link between the different component carriers (such as CC0, CC1) that can partly overlap or between different component carrier groups Channel (such as uplink data channel and/or uplink control channel) and SRS.
Herein, " cell " can be one-component carrier wave.SRS can be one in cycle SRS and aperiodic SRS It is individual.
More specifically, in the case where PUSCH is mapped to physical resource, to the physics with being distributed for PUSCH transmission The mapping of temporal frequency resource unit (k, l) may be not used in as identical clothes corresponding to resource block (or multiple Physical Resource Block) The SC-FDMA symbols that the possibility SRS transmission of UE specific periods SRS in cell of being engaged in retains.In other words, whether nothing concerns PUSCH Including UCI, the operation of user equipment can be defined as transmitting PUSCH, herein, in corresponding subframe, retain for SRS transmission Last symbol be perforated so that the last symbol retained for SRS transmission is not mapped to resource unit for PUSCH.
Fig. 7 is to show the flow chart for being used to control the method for up-link power in a user device according to embodiment 2. Fig. 8 is to show the schematic diagram for being used to control the concept of up-link power in a user device according to embodiment 2.
Reference picture 7, according to embodiment 2 be used for control the method (700) of up-link power can be with a user device (or formation) multiple TAG are configured at step S710 including (i) and (ii) controls up-link power at step S720.
At step S710, user equipment can be configured with multiple TAG by transmission/receiving point (such as base station). User equipment can receive the configuration information (for example, TAG configuration information) associated with multiple TAG from transmission/receiving point, and Configuration (or formation) multiple TAG.For example, down link control information (such as PDCCH) or high-level signaling (example can be passed through Such as RRC information) TAG configuration informations are transferred to user equipment from transmission/receiving point.
At step S720, while SRS and PUSCH/PUCCH is performed in different districts in the case of transmission, if Exceed on any lap between transmission SRS and PUCCH/PUSCH of the overall transmission power on different districts symbol and use The maximum of family equipment can allow transimission power (PCMAX), then user equipment can be abandoned in the subframe associated with SRS transmission SRS.Here, different districts can be two or more different component carrier.SRS can be cycle SRS and aperiodic SRS In one.
In other words, if in TAG, subframe (such as in the symbol on subframe i) for given serving cell The SRS transmission of user equipment and subframe (such as subframes in identical TAG or another TAG, for different service cells I or subframe i+1) on PUCCH/PUSCH it is overlapping, then if the overall transmission power of user equipment is in any overlapping portion of symbol Divide upper more than PCMAX, then user equipment can abandon SRS.
More specifically, as shown in Fig. 8 (a), identical TAG (examples are belonged in (i) different component carriers (such as CC0 and CC1) Such as TAG0) and (ii) while perform SRS and PUSCH/PUCCH for different districts in the case of transmission, user equipment can be with According to whether transimission power limitation be present to transmit or abandon SRS.For example, in the case where being limited in the absence of transimission power, If forming multiple TAG, user equipment can transmit SRS.In the case where transimission power limitation be present, user equipment can be with Abandon SRS.Meanwhile as shown in Fig. 8 (a) and Fig. 8 (c), belong to different TAG in (i) different component carriers (such as CC0 and CC1) In the case that (such as TAG0 and TAG1) and (ii) SRS transmission and PUSCH/PUCCH transmission are completely overlapped, when for different small When area is transmitted while performing SRS and PUSCH/PUCCH, can be with according to whether there is transimission power limitation and transmit in user equipment Or abandon SRS.For example, in the case where being limited in the absence of transimission power, if forming multiple TAG, user equipment can be with Transmit SRS.In the case where transimission power limitation be present, user equipment can abandon SRS.Meanwhile as shown in Fig. 8 (d), (i) different component carriers (such as CC0 and CC1) belong to different TAG (such as TAG0 and TAG1) and (ii) SRS transmission and In the case that PUSCH/PUCCH hops are overlapping, transmitted while SRS and PUSCH/PUCCH is performed for different districts When, can be with according to whether transimission power limitation be present and transmit or abandon SRS in user equipment.For example, in the absence of transmission work( In the case that rate limits, if forming multiple TAG, user equipment can transmit SRS.Transimission power limitation be present Under, user equipment can abandon SRS.
Meanwhile in the case where user equipment is configured using three or more serving cells, if in TAG , for the subframe of given serving cell, (such as the SRS transmission (i) of the user equipment in the symbol on subframe i) is with being used for One or more different service cells subframe (such as the SRS transmission on subframe i) is overlapping, and (ii) with for one or PUCCH/PUSCH transmission in the subframe (such as subframe i or subframe i+1) of multiple another cells is overlapping, then if total pass Defeated power is on any lap of symbol more than PCMAX, then user equipment can abandon SRS.In other words, if user sets Standby to be configured using three or more serving cells, then user equipment can be performed the three of two or more TAG (i.e. SRS, another SRS and PUSCH/ are transmitted while SRS+SRS+PUSCH/PUCCH on individual or more component carriers Transmitted while PUCCH).In this case, if symbol corresponding to completely or partially overlapping and transimission power limit be present In the case of system, then user equipment can abandon all SRS before another power proportions scaling is performed.In such case Under, limited if there is no transimission power, then user equipment can transmit all SRS.
Fig. 9 is to show the flow chart for being used to control the method for up-link power in a user device according to embodiment 3. Figure 10 is to show the schematic diagram for being used to control the concept of up-link power in a user device according to embodiment 3.
Reference picture 9, according to embodiment 3 be used for control the method (900) of up-link power can be with a user device Multiple TAG are configured at step S910 and (ii) determines SRS transmission power at step S920 including (i).
At step S910, user equipment can be configured with multiple TAG by transmission/receiving point (such as base station).With Family equipment can receive the configuration information (for example, TAG configuration information) associated with multiple TAG from transmission/receiving point, and match somebody with somebody Put (or formation) multiple TAG.For example, can by down link control information (such as PDCCH) or high-level signaling (such as RRC information) TAG configuration informations are transferred to user equipment from transmission/receiving point.
At step S920, transimission power limitation be present and performing SRS and another SRS (" SRS+ on different districts SRS ") while transmission in the case of, user equipment can determine SRS transmission work(by performing same power proportions scaling Rate, wherein, scale factor is more than 0 and less than or equal to 1.In other words, as shown in Figure 10 (a) (TAG be identical in the case of), such as (being different and in the presence of in the case of partly overlapping in TAG) shown in Figure 10 (b) and (it is different in TAG as shown in Figure 10 (c) And exist it is completely overlapped in the case of), user equipment can determine SRS transmission power by performing same ratio scaling. More specifically, if (i) in a TAG (such as TAG0), subframe (such as subframe i) for given serving cell On symbol in user equipment SRS transmission and sons in different TAG (such as TAG1), for different service cells (such as the SRS transmission on subframe i) is partly or completely overlapping, and (ii) has transimission power limitation, then user equipment for frame Can be by performing same ratio scaling the SRS transmission power that is transmitted while determining to be used for " SRS+SRS " so that always transmit Power is no more than PCMAX.In this case, limited if there is no transimission power, then user can be not carried out power ratio SRS is transmitted in the case of example scaling.Here, different districts can be 2 or multiple different component carriers.SRS can be week One in phase SRS and aperiodic SRS.
Figure 11 is to show the system flow chart for being used to control the method for up-link power according to other embodiments.
Reference picture 1 and Figure 11, at step S1110, in coordinated multipoint transmission/reception (CoMP) or carrier aggregation (CA) In the case of, the first transmission/receiving point (such as eNB 110) corresponding with serving cell can pass to user equipment 120 (UE1) Defeated and multiple TAG associated configurations information (such as TAG configuration informations).Here it is possible to by down link control information (such as PDCCH) or high-level signaling (such as RRC information) passes TAG configuration informations from the first transmission/receiving point (such as eNB 110) It is defeated to arrive user equipment 120 (UE1).
At step S1120, user equipment 120 (UE1) can receive TAG configuration informations, and configure (or formation) Multiple TAG.As described above, although user equipment is configured with multiple TAG by transmission/receiving point, but in carrier aggregation (CA) the certain components carrier wave in the case of may belong to identical TAG.For example, configuring the situation of two uplink component carriers Under, each component carrier may belong to identical TAG.For another example, three uplink component carriers are being configured In the case of, two uplink component carriers may belong to identical TAG, and other uplink component carriers may belong to separately One TAG (i.e. different TAG).
At step S1130, user equipment 120 (UE1) can reflect according to above-mentioned situation 1 to situation 4 to perform resource Penetrate and the work(associated with uplink channel (such as uplink data channel and/or uplink control channel) and SRS Rate controls.Here, " situation 1 " represents that (i) different component carriers belong to identical TAG, or belongs to different TAG different components load Ripple is completely overlapped, and (ii) it is expected to transmit while PUCCH/PUSCH and SRS, and (iii) has the feelings of transimission power limitation Condition." situation 2 " represents that (i) different component carriers belong to identical TAG, or belong to different TAG different component carriers it is completely heavy Folded, (ii) it is expected to transmit while PUCCH/PUSCH and SRS, and the situation that transimission power is limited is not present in (iii)." situation 3 " represent that (i) belongs to different TAG different component carriers not exclusively overlapping (i.e. partly overlapping), and (ii) it is expected PUCCH/ Transmitted while PUSCH and SRS, and (iii) has transimission power limitation." situation 4 " represents that (i) belongs to different Not exclusively overlapping (i.e. partly overlapping), (ii) it is expected to transmit while PUCCH/PUSCH and SRS TAG different component carriers, And the situation of transimission power limitation is not present in (iii).
At step S1130, for example, as described in reference picture 5 and Fig. 6, in SRS and PUSCH while on same cells In the case of transmission, user equipment can perform uplink resource mapping so that the resource unit for PUSCH is mapped to SC-FDMA symbols in addition to the last symbol of the SRS transmission distribution in for subframe.Due to detailed with reference to example 1 above This operation is carefully described, so eliminating its detailed description.
At step S1130, for another example, as described in reference picture 7 and Fig. 8, performed in different districts SRS and In the case of being transmitted while PUSCH/PUCCH, if transmission SRS and PUCCH/ of the overall transmission power on different districts Maximum on any lap between PUSCH symbol more than user equipment can allow transimission power (PCMAX), then user Equipment can abandon the SRS in the subframe associated with SRS transmission.Because such as this operation is described in detail in embodiment 2, So eliminate its detailed description.
At step S1130, for another embodiment, as described in reference picture 9 and Figure 10, transimission power limitation be present And perform in the case that SRS and another SRS (" SRS+SRS ") transmit while on different districts, user equipment 120 can be with SRS transmission power is determined by performing same power proportions scaling.It is this due to being described in detail with reference to example 3 above Operation, so eliminating its detailed description.
Moreover, two or more different component carrier be configurable for the up-link transmission of user equipment and In the case that user equipment is configured with multiple TAG, the operation of user equipment can be to be in power limited according to user equipment Situation or non-power limited case limit.Specifically, component carriers (CC) different from (i) belong to identical TAG or (ii) Belonging to the different TAG associated UE operating methods of the completely overlapped situation of different component carriers can be applied in first.Hereafter, The associated UE operations of the situation of TAGs different from belonging to different component carriers not completely overlapped (partly overlapping) can also quilt Further apply.
In other words, can be defined such that first can be with for the UE operations of the different component carriers for belonging to identical TAG Apply backward compatibility.Therefore, when under identical TAG transmit uplink channel (such as uplink control channel and/or on Downlink data channel) and during SRS, the Power Control for particular channel and/or signal can be performed or abandon program.And And it can maximally ensure uplink data channel transmission and the SRS transmission of the component carrier by belonging to different TAG.
In addition, according to this operation defined for user equipment, in the case of carrier aggregation, can be by avoiding on The excessive Power Control of downlink data channel prevents the reduction of the message transmission rate in data channel.Moreover, it is directed to SRS, the frequent decline of satisfaction according to specified conditions and/or excessive Power Control can be prevented, is thereby guaranteed that in carrier aggregation In the case of SRS transmission reliability.Thus, it is possible to obtain according to the gain of the scheduling of frequency dependence and/or according to the time-division The Wave beam forming gain for the channel reciprocity being multiplexed in (TDD).
Figure 11 is returned to, in step S1140, user equipment 120 can be with the above-mentioned up-link power of users multiplexing equipment Uplink channel (such as uplink data channel and/or uplink control channel) that control method is applied to and upper Downlink reference signal (such as SRS), and can be into the first transmission/receiving point 110 and the second transmission/receiving point 112 The channel signal of at least one transmission multiplexing.In this case, in up-link CoMP situations, user equipment 120 can be with To the first transmission/receiving point 110 transmit uplink channel (such as uplink data channel and/or up-link control letter Road) and uplink reference signals (such as SRS) in it is at least one, and to the second transmission/receiving point 112 transmit they in Another.
Figure 12 is the schematic diagram for showing transmission/receiving point according to some embodiments.
Reference picture 12, control processor 1210 can be included according to transmission/reception 1200 of at least one embodiment, launched Device 1220 and receiver 1230.
Control processor 1210 can according to (i) with carrier aggregation, in a user device transmit on uplink The associated transmission of control channel and multiplexing method and/or (ii) be used to be multiplexed uplink control channel and SRS method, Carry out the operation of controlling transmission/receiving point 1200.
Emitter 1220 and receiver 1230 can respectively be transmitted with reference to user equipment and received for performing above-mentioned Signal, message and/or data required for embodiment.For example, emitter 1220 can be to user device transmissions and multiple TAG phases The configuration information (such as TAG configuration informations) of association.Receiver 1230 can from user equipment receive user equipment it is above-mentioned on Uplink channel that uplink power control method is applied to (such as uplink data channel and/or up-link control Channel processed) and uplink reference signals (such as SRS) in it is at least one.
Figure 13 is the schematic diagram for showing the user equipment according to some embodiments.
Reference picture 13, receiver 1310, control process can be included according to the user equipment 1300 of at least one embodiment Device 1320 and emitter 1330.
Receiver 1310 can from transmission/receiving point by corresponding channel receive down link control information, data and/ Or message.As described in example 1 above, receiver 1310 can receive from transmission/receiving point associated with multiple TAG matches somebody with somebody confidence Cease (such as TAG configuration informations).
In addition, control processor 1320 can according to under carrier aggregation in user equipment 1300 on uplink The associated transmission of the control channel of transmission and multiplexing method, and/or the side for being multiplexed uplink control channel and SRS Method, to control the operation of user equipment 1300.
As described in Example 1, control processor 1320 can form multiple TAG and perform for SRS and PUSCH identical The resource impact transmitted while in cell.Here, resource impact may be performed that so that transmitting the last of PUSCH subframe Symbol is not mapped to the resource unit for PUSCH.Alternatively, as described in Example 2, control processor 1320 can be with shape Into multiple TAG, and the feelings transmitted in SRS and PUSCH/PUCCH (i.e. PUSCH and/or PUCCH) while on different districts SRS transmission is controlled under condition.Here, control can include：If overall transmission power transmits SRS and PUCCH/ on different districts Maximum on any lap between PUSCH symbol more than user equipment 1300 can allow transimission power (PCMAX) then put Abandon SRS.Alternatively, as described in Example 3, (it is referred to herein as " the in SRS (referred to herein as " the first SRS ") and another SRS Two SRS ") in (while i.e. in SRS+SRS transmit in the case of) in the case of simultaneous transmission on different districts, control processor 1320 can scale the transmission work(of each SRS of each to determine to be transferred in different districts by performing same ratio Rate, if overall transmission power exceedes user equipment 1300 on the lap between transmission the first SRS and the 2nd SRS symbol Maximum can allow transimission power if.
Emitter 1330 can transmit control information, data and/or message by corresponding channel to transmission/receiving point.
In the case of the above embodiments, user equipment be configured with the case of carrier aggregation multiple TAG and In the case of one or more up-link control/data channel and SRS are transmitted on different component carriers, the behaviour of user equipment Making can be with according to whether having the transimission power limitation for user equipment and being defined.Therefore, can overcome according to transmitting/connect The uplink channel of the ambiguity association of the user equipment of the request of sink/signal transmission.
In the case of carrier aggregation, it is configured with multiple TAG in (i) user equipment and (ii) is in different component carriers It is upper transmission uplink channel (such as uplink control channel and/or uplink data channel) and SRS in the case of, on Stating embodiment can be with according to whether has the transimission power limitation for user equipment to define the operation of user equipment.Meanwhile In the case of CoMP, on (i) user equipment is configured with multiple TAG and (ii) is transmitted on different component carriers In the case of Downlink channels (such as uplink control channel and/or uplink data channel) and SRS, user equipment Operation can also limit to define, as described above according to whether existing for the transimission power of user equipment.
Although eliminating the content for the technical standard being related in above-described embodiment for the brief description of this specification, It is that the relevant content of technical standard may be constructed the part of this specification.Therefore, the content relevant with standard is increased to explanation It is to be interpreted as being included within the scope of the present invention in book and/or claim.
More specifically, document set forth below can form a part for this explanation as a part for open source literature.Cause This, the increase content relevant with standard and/or normative document are to be interpreted as being included in this into specification and/or claim In the scope of invention.
As noted previously, as the technological thought of the present invention is described by exemplary embodiment, it is possible to is not departing from this In the case of the essential characteristic of invention according to foregoing description by those skilled in the art make it is various forms of replace, modification and Change.Therefore, the embodiment disclosed in the present invention is intended to show that the technological thought of the present invention, and the scope of the present invention is unrestricted In embodiment.The scope of the present invention should belong to this hair to be equal to all technological thoughts included within the scope of claim Bright this mode explains on the basis of appended claims.
The cross reference of related application
The application requires and (submitted on October 12nd, 2012) korean patent application according to 35U.S.C. § 119 No.10-2012-0113844 and (being submitted on 2 27th, 2013) korean patent application No.10-2013-0021542, Entire contents are incorporated herein by reference.

Claims (8)

1. a kind of method for being used to control up-link power in a user device, methods described include：
Configure multiple Timing Advance groups (TAG)；And
Physically at least one in ink Shared Channel (PUSCH) and physical uplink control channel (PUCCH) and Detection reference signal (SRS) controls SRS transmission in the case of being transmitted while on different districts, wherein, the control includes： If overall transmission power transmitted on different districts SRS symbol and at least one symbol in transmission PUSCH and PUCCH it Between lap on exceed user equipment maximum can allow transimission power (PCMAX), then SRS is abandoned,
Wherein, it is completely overlapped that SRS symbol and at least one symbol in transmission PUSCH and PUCCH are transmitted,
Wherein, the control includes：The SRS transmission power is determined in the case of the multiple SRS of simultaneous transmission on different districts, Wherein, the determination includes, if the overall transmission power surpasses on the lap between transmitting the multiple SRS symbol Transimission power can be allowed by crossing the maximum of user equipment, then each on each different districts to determine by performing same scaling SRS transimission power,
Wherein, the control includes：For detection reference signal (SRS) and physical uplink link shared channels (PUSCH) in phase Transmitted while with cell to perform resource impact, wherein, the resource impact is performed as the subframe for causing transmission PUSCH Last symbol be not mapped to resource unit for PUSCH.
2. the method according to claim 11, wherein,
Different districts belong to identical TAG, or
Different districts belong to different TAG.
3. according to the method for claim 1, wherein, different districts are different component carriers.
4. according to the method for claim 3, wherein, the quantity of different component carriers is two or more.
5. a kind of user equipment, including：
Receiver, it is configured as receiving the configuration information associated with multiple Timing Advance groups (TAG)；And
Control processor, it is configured as (i) and configures multiple TAG, and (ii) physically ink Shared Channel (PUSCH) It is same on different districts with least one and detection reference signal (SRS) in physical uplink control channel (PUCCH) When transmission in the case of control SRS transmission, wherein, the control processor is configured as：If overall transmission power is different small Transmitted in area and exceed user on the lap between at least one symbol in SRS symbol and transmission PUSCH and PUCCH The maximum of equipment can allow transimission power (PCMAX), then SRS is abandoned,
Wherein, it is completely overlapped that SRS symbol and at least one symbol in transmission PUSCH and PUCCH are transmitted,
Wherein, the control includes：The SRS transmission power is determined in the case of the multiple SRS of simultaneous transmission on different districts, Wherein, if the overall transmission power exceedes user equipment on the lap between transmitting the multiple SRS symbol Maximum can allow transimission power, then the control processor is each on each different districts to determine by performing same scaling SRS transimission power,
Wherein, the control processor includes：For detection reference signal (SRS) and physical uplink link shared channels (PUSCH) transmitted while on same cells to perform resource impact, wherein, the resource impact is performed as so that transmitting The last symbol of PUSCH subframe is not mapped to the resource unit for PUSCH.
6. user equipment according to claim 5, wherein,
Different districts belong to identical TAG, or
Different districts belong to different TAG.
7. user equipment according to claim 5, wherein, different districts are different component carriers.
8. user equipment according to claim 7, wherein, the quantity of different component carriers is two or more.
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