WO2011085646A1 - 一种上行功率压缩的方法和用户设备 - Google Patents

一种上行功率压缩的方法和用户设备 Download PDF

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Publication number
WO2011085646A1
WO2011085646A1 PCT/CN2011/070023 CN2011070023W WO2011085646A1 WO 2011085646 A1 WO2011085646 A1 WO 2011085646A1 CN 2011070023 W CN2011070023 W CN 2011070023W WO 2011085646 A1 WO2011085646 A1 WO 2011085646A1
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Prior art keywords
power
uplink
compression
user equipment
compressed
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PCT/CN2011/070023
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English (en)
French (fr)
Inventor
张元雨
郑辰
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普天信息技术研究院有限公司
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Publication of WO2011085646A1 publication Critical patent/WO2011085646A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/34TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/346TPC 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • H04W52/146Uplink power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/36TPC 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
    • H04W52/367Power values between minimum and maximum limits, e.g. dynamic range
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022Site diversity; Macro-diversity

Definitions

  • the present invention relates to the field of mobile communications technologies, and in particular, to a method and user equipment for uplink power compression. Background of the invention
  • the power required for the uplink transmission is calculated according to a predetermined method, and if the calculated power is greater than the maximum transmission power of the UE, the UE cannot follow the required power.
  • the uplink transmission is performed, and the situation is referred to as UE power limitation.
  • the maximum transmission power refers to the maximum transmission power according to the UE type or the power owned by the UE, and the minimum value of the two is taken.
  • uplink transmission There are four major differences between uplink transmission and downlink transmission.
  • One of the most important points is that in the uplink transmission process, the UE is prone to power limitation due to the continuous consumption of UE power and the inability to replenish energy in time.
  • LTE R8 Long Term Evolution System
  • PUSCH physical uplink shared channel
  • PUCCH Physical uplink control channel
  • uplink carrier aggregation In the LTE-Advanced (LTE-Advanced) system, the concept of uplink carrier aggregation is proposed. That is, uplink transmission can use multiple carriers, and information carried by multiple carriers is aggregated and transmitted.
  • the current LTE-Advanced system can use up to five simultaneous uplinks.
  • the line carrier, the bandwidth of each uplink carrier can be up to 20M, so the maximum bandwidth of the uplink transmission of the LTE-Advanced system is 100M.
  • PUSCH and PUCCH can be simultaneously transmitted for a certain UE, for example: using one uplink carrier or different uplink carriers within a certain time (for example, one time slot or subframe) Internal) Simultaneous use of PUSCH and PUCCH for uplink transmission.
  • the UE calculates each physical medium according to a preset method.
  • the power required for the uplink channel when the sum of the power required by each uplink channel is greater than the maximum transmit power of the UE, if the UE directly transmits the information transmitted by each uplink channel according to the calculated power, it will cause aggregation.
  • the power of the transmitted signal is greater than the maximum transmit power of the UE, that is, the UE power limitation problem occurs.
  • an object of the embodiments of the present invention is to provide a method and user equipment for uplink power compression to solve the problem of limited power when uplink transmission is performed by using two or more uplink channels.
  • a method for uplink power compression includes:
  • the information is transmitted by using at least two uplink channels.
  • power compression is performed on some or all of the uplink channels until the sum of the compressed powers of the respective uplink channels is not greater than Maximum transmit power of the user equipment Rate, the part or all of the uplink channels respectively perform information transmission according to the compressed power.
  • the user equipment includes a power compression module and an information transmission module; and the power compression module, when the sum of power required by at least two uplink channels currently used is greater than a maximum transmission power of the user equipment, part or all Performing power compression on the uplink channel until the sum of the compressed powers of the respective uplink channels is not greater than the maximum transmit power of the user equipment, and transmitting a transmission indication to the information transmission module;
  • the information transmission module receives a transmission indication, and performs information transmission according to the compressed power by using the part or all of the uplink channels.
  • the sum of the power required by each uplink channel in the present invention is greater than the maximum transmit power of the user equipment, that is, in the case of power limitation, part or all
  • the uplink channel performs power compression, for example, multiplying the power required for part or all of the uplink channel by a coefficient (the range of the coefficient is [0, 1]), or reducing the required power by a certain value until each uplink
  • the sum of the powers after channel compression is not greater than the maximum transmit power of the user equipment, and the uplink channel performs information transmission according to the compressed power, thereby solving the problem of power limitation.
  • Fig. 1 is a time slot distribution diagram for performing uplink information transmission using a plurality of PUSCHs and PUCCHs at the same time.
  • FIG. 2 is a flow chart of a first method of uplink power compression provided by the present invention.
  • FIG. 3 is a flow chart of a second method of uplink power compression provided by the present invention.
  • FIG. 4 is a time slot distribution diagram for performing uplink information transmission using a plurality of PUSCHs at the same time.
  • FIG. 5 is a flowchart of a third method for uplink power compression provided by the present invention.
  • FIG. 6 is a flow chart of a fourth method of uplink power compression provided by the present invention.
  • FIG. 7 is a time slot distribution diagram for performing uplink information transmission using a plurality of PUCCHs at the same time.
  • FIG. 8 is a flowchart of a fifth method for uplink power compression provided by the present invention.
  • FIG. 9 is a flow chart of a sixth method of uplink power compression provided by the present invention.
  • FIG. 10 is a structural diagram of a user equipment provided by the present invention. Mode for carrying out the invention
  • the uplink power compression method of the present invention can solve the problem that the UE power is limited in the uplink carrier aggregation scenario. And because during power compression, the PUSCH is first compressed, and the PUCCH is power-compressed if necessary. In this case, the impact on the PUCCH of the uplink feedback control information is as small as possible. Since the PUCCH carries the uplink feedback information about the downlink data transmission, the impact on the downlink data transmission is minimized; In power compression, the difference between different PUSCHs is considered, and different degrees of power compression are performed, so that the uplink data transmission is also guaranteed to the greatest extent.
  • the method for uplink power compression specifically includes: if at least two uplink channels are used for transmitting information at the same time, when the sum of the required powers of the respective uplink channels is greater than the maximum transmit power of the user equipment, power is applied to some or all of the uplink channels. Compressed until the sum of the compressed powers of the respective uplink channels is not greater than the maximum transmit power of the user equipment, and the part or all of the uplink channels respectively use the compressed power for information transmission.
  • the at least two uplink channels that are used at the same time may be PUSCH or both PUCCH, and may include both PUSCH and PUCCH.
  • the order of the sounding reference signals SRS may be as small as possible, or the order of the transport blocks occupied by the uplink channel may be as large as possible, or the order of power required may be as large as possible. Or according to the sequence obtained by the combination of at least two factors of the size of the SRS, the size of the transport block, and the required power, according to the uplink channel Power compression is performed in a predetermined order.
  • power compression may be performed according to different ratios; that is, each compressed uplink channel power is judged whether the sum of compressed power of each uplink channel is greater than the maximum of user equipment. Transmit power, if yes, compress the power of the next uplink channel in the stated order until the sum of the compressed power of each uplink channel is not greater than the maximum transmit power of the user equipment.
  • performing power compression on all uplink channels of the same type according to a predetermined ratio for example, performing power compression on a predetermined ratio for all PUSCHs, or performing power according to a predetermined ratio for all PUCCHs. compression.
  • power compression can be performed on the same uplink ratio for different uplink channels, and power compression can be performed in different ratios.
  • the present invention may also stop using part of the uplink channel transmission information, or cyclically perform power compression on the uplink channel, for example: performing power compression on the uplink channels 1 and 2 of the current transmission information, and all uplink channels of the current transmission information.
  • performing power compression on the uplink channels 1 and 2 of the current transmission information for example: performing power compression on the uplink channels 1 and 2 of the current transmission information, and all uplink channels of the current transmission information.
  • the sum of the compressed powers of 1 and 2 is greater than the maximum transmit power of the user equipment, stop using some of the uplink channels, such as channel 1, transmitting information, all uplink channels of the remaining transmission information, such as channel 2, required before compression.
  • the step of performing power compression on the uplink channel 2 of the current transmission information is returned. In the entire uplink channel of the remaining transmission information, such as channel 2, the sum of the required power before compression is not greater than the user.
  • all the uplink channels of the remaining transmission information are respectively transmitted with respective required powers, that is, in the above example, the channel 2 of the remaining transmission information is transmitted using the power required before compression; All of the information currently transmitted
  • the uplink channel for example, channel 1 and channel 2
  • all the uplink channels of the current transmission information for example, channel 1 and channel 2, respectively, are respectively compressed. Power for information transmission.
  • the ratio of each power compression per uplink channel does not exceed the predetermined Threshold, so as to avoid excessive power compression, has too much impact on the performance of signal transmission.
  • a preferred embodiment for power compression using the present invention is given below for the case where at least two uplink channels used at the same time include both PUSCH and PUCCH, or both PUSCH or PUCCH. At the same time, it refers to a certain period of time, for example, within one subframe or within one slot.
  • the user equipment uses a total of five uplink carriers, and each of the uplink carriers carries both the PUCCH and the PUSCH. For details, refer to FIG. 1, 2, and 3.
  • 1 is a time slot distribution diagram of uplink information transmission using multiple PUSCHs and PUCCHs at the same time, which only exemplarily shows a time slot distribution of uplink information transmission using multiple PUSCHs and PUCCHs simultaneously, for both PUSCH and PUCCH.
  • the existing situations are applicable and are not intended to limit the specific time slot distribution of the PUSCH and PUCCH.
  • FIG. 2 is a flow chart of a first method of uplink power compression provided by the present invention.
  • the first method specifically includes:
  • Step 201 Determine an order of power compression for each PUSCH.
  • the sounding reference signal (SRS) on each carrier may be in a small to large order, the order of the transport blocks carried by the PUSCH from large to small, and the power required by the PUSCH from large to small.
  • the PUSCH performs power compression on the PUSCH in sequence, such as the uplink control information (Uplink Control Information), and may determine the order of power compression on the PUSCH by considering the above factors or factors.
  • Uplink Control Information Uplink Control Information
  • Step 202 Perform power compression on the first PUSCH according to the sequence determined in step 201.
  • Step 203 Determine whether the sum of the compressed powers of all PUSCHs and PUCCHs is greater than the maximum transmit power of the user equipment. If yes, go to step 204, otherwise go to step 213.
  • Step 204 Determine whether all PUSCHs have been power-pressed in the current cycle. If yes, go to step 206, otherwise go to step 205.
  • Step 205 Perform power compression on the next PUSCH in the order of step 201, and return to step 203.
  • the ratio between the compressed power value and the required power value before the PUSCH compression cannot be less than a predetermined value each time the power is compressed on the PUSCH, so as not to affect the
  • the " ⁇ " may be determined according to factors such as the number of resources occupied by the PUSCH, and may be configured with different ⁇ for the PUSCH on different uplink carriers. Of course, in order to realize the single order and easy operation, multiple The PUSCH configuration on the uplink carrier is the same. It should be noted that if the compression ratio of the PUSCH on an uplink carrier does not need to be so small, the uplink power required for all uplink channels does not exceed the maximum of the UE. To transmit power, it is only necessary to compress a certain power so that the total uplink transmission power is the maximum transmission power of the UE.
  • Step 206 Determine an order of power compression for each PUCCH.
  • the power compression of each PUCCH may be sequentially performed according to the order of the SRS signals on the respective carriers from small to large or the power required by the PUCCH from large to small.
  • the power of each PUCCH may be compressed in a certain order considering the size of the SRS signal and the power required by the PUCCH.
  • Step 207 Perform power compression on the first PUCCH in the order of step 206.
  • the PUCCH may be sequentially compressed according to the order of the SRS from small to large or the power required by the PUCCH from large to small, or the power of the PUCCH may be determined by considering the size of the SRS signal and the power required by the PUCCH. order.
  • Step 208 Determine whether the sum of the compressed powers of all PUSCHs and PUCCHs is greater than the maximum transmit power of the user equipment. If yes, go to step 209, otherwise go to step 213.
  • Step 209 determining whether all PUCCHs have been power-pressed in this cycle. If yes, go to step 211, otherwise go to step 210.
  • Step 210 Perform power compression on the next PUCCH in the order of step 206, and return to step 208.
  • the ratio between the compressed power value and the required power value before the PUCCH compression cannot be less than a predetermined value Pw'k after power compression on the PUCCH, so as not to affect the
  • the A"CCH can be determined according to factors such as the number of resources occupied by the PUCCH, and different At/ccHs can be configured for the PUCCHs on different carriers. Of course, in order to realize the single order and easy operation, it can also be The PUCCHs on the carriers are all configured with the same P. It should be noted that if the compression ratio of the PUCCH on an uplink carrier does not need to be as small as A ⁇ c ⁇ , the uplink power required for all uplink channels is not exceeded. The maximum transmission power of the UE only needs to compress a certain power, so that the total uplink transmission power is the maximum transmission power of the UE.
  • Step 211 Stop part of the PUSCH transmission information.
  • the PUSCH that is suspended may be the PUSCH that has the largest resource or the smallest SRS signal.
  • Step 212 Determine whether the sum of the required powers of the remaining PUSCH and the PUCCH is greater than the maximum transmit power of the user equipment. If yes, return to step 201; otherwise, go to step 213.
  • step 201 After returning from step 212 to step 201, step 201 stops the partial PUSCH transmission information for the remaining PUSCH and PUCCH or from the remaining PUSCH.
  • the power compression process may be performed only on the PUSCH channel regardless of the PUCCH. That is to say, the above parameter ⁇ puccH, H is i.
  • Step 213 Each uplink channel adopts power transmission information allocated according to a power compression result.
  • the respective uplink channels are allocated respective compressed after the step.
  • the power is transmitted for information, otherwise power is no longer allocated for the uplink channel that stops transmission, and information is transmitted for each of the remaining uplink channels by assigning respective required power.
  • the scheme for stopping part of the uplink channel is equivalent to compressing the power of the stopped uplink channel to 0, and compressing the power of the remaining uplink channel, or maintaining the required power.
  • FIG. 3 is a flow chart of a second method of uplink power compression provided by the present invention.
  • the second method includes:
  • Step 301 Perform power compression on the PUSCH on each uplink carrier according to a predetermined ratio.
  • the predetermined ratio is a ratio of the compressed power value on the PUSCH to the power value before compression, and the predetermined ratio is not less than a minimum value (0 ⁇ D , where the RAC H is determined by the required compression power
  • the size of the required compression the greater the power required to be compressed, the smaller the coefficient R AC H. That is, the ⁇ H can be calculated first, that is, the total power required for each channel on the uplink minus the maximum transmission power of the UE.
  • the PUSCH is subjected to power compression according to ⁇ « C H , that is, the PUSCH uplink channel on each uplink carrier.
  • the compressed power is multiplied by the power before compression of the PUSCH uplink channel; if the coefficient is less than - k p , the power is compressed according to the PUSCH, that is, the power after compression of each PUSCH uplink channel is 1 _ ⁇ « C H Multiply the PUSCH uplink channel compression Front power.
  • the PUSCH on each uplink carrier uses the same ratio for power compression. Of course, power compression can be performed at different ratios.
  • the required total power of the PUSCH and the PUCCH of each uplink carrier is 24, wherein the required total power of the PUSCH of each uplink carrier is 18, and the total required PUCCH of each uplink carrier is required.
  • the power is 6,
  • the PUSCH uplink channel of the uplink carrier performs power compression.
  • the total required power of the PUSCH is 15, and the required total power of the PUCCH of each uplink carrier is 6.
  • Step 302 Determine whether the sum of the compressed powers of all PUSCHs and PUCCHs is greater than the maximum transmit power of the user equipment. If yes, go to step 303, otherwise go to step 307.
  • step 303 is performed;
  • Step 303 Perform power voltage on the PUCCH on each uplink carrier according to a predetermined ratio. Shrink.
  • the predetermined ratio is a ratio of the compressed power value on the PUCCH to the power value before compression, and the predetermined ratio is not less than k PUCCH (0 ⁇ k PUCCH ⁇ !), where ⁇ /CCH It is determined by the amount of compression power required. That is to say, it is possible to calculate ⁇ ⁇ , that is, the power of the compressed PUSCH plus the power required by the PUCCH, and use the obtained sum minus the maximum transmission power of the UE, and divide the obtained difference by the PUCCH required on each uplink carrier.
  • the PUCCH is power compressed according to k puccH, that is, the compressed power on PUCCH is " CC H multiplied by the power before PUCCH compression; if this quotient Less than The PUCCH performs power compression, that is, the power after PUCCH compression is the power before PUCCH compression.
  • the PUCCH on each uplink carrier uses the same ratio for power compression. Of course, power compression can be performed at different ratios.
  • the PUCCH upstream channel of the wave performs power compression.
  • Step 304 Determine whether the sum of the compressed powers of all PUSCHs and PUCCHs is greater than the maximum transmit power of the user equipment. If yes, go to step 305, otherwise go to step 307.
  • Step 305 stopping part of the PUSCH transmission information.
  • step 211 The specific implementation of this step is the same as step 211.
  • Step 306 Determine whether the sum of the required powers of the remaining PUSCH and the PUCCH is greater than the maximum transmit power of the user equipment. If yes, return to step 301; otherwise, go to step 307.
  • Step 307 Each uplink channel adopts power transmission information allocated according to a power compression result. This step is the same as step 213.
  • the user equipment uses a total of five carriers, and the uplink channel carried in each carrier includes only the PUSCH. For details, refer to FIG. 4, 5, and 6.
  • FIG. 4 is a time slot distribution diagram of uplink information transmission using multiple PUSCHs at the same time, which only exemplarily shows a time slot distribution in which multiple PUSCHs are used for uplink information transmission, as long as at least two PUSCHs exist simultaneously. The situation is applicable and is not used to limit the specific time slot distribution of the PUSCH.
  • FIG. 5 is a flowchart of a third method for uplink power compression provided by the present invention.
  • the third method specifically includes:
  • Step 501 Determine a sequence of performing power compression on a PUSCH on each uplink carrier.
  • the specific implementation of this step is the same as step 201.
  • Step 502 Perform power compression on the first PUSCH in the order of step 501.
  • Step 503 Determine whether the sum of the compressed powers of all PUSCHs is greater than the maximum transmit power of the user equipment. If yes, go to step 504, otherwise go to step 508.
  • Step 504 Determine whether all PUSCHs have undergone power compression in the current cycle. If yes, go to step 506, otherwise go to step 505.
  • Step 505 Perform power compression on the next PUSCH in the order of step 501, and return to step 503.
  • step 205 The specific implementation of this step is the same as step 205.
  • Step 506 stopping part of the PUSCH transmission information.
  • step 211 The specific implementation of this step is the same as step 211.
  • Step 507 Determine whether the sum of powers required for the remaining PUSCH is greater than the maximum transmit power of the user equipment. If yes, return to step 501; otherwise, go to step 508.
  • Step 508 Each PUSCH uses compressed power to transmit information.
  • step 213 The execution of this step is similar to step 213, if there is no stop part before step 508 After the PUSCH transmits the information, or the partial PUSCH is stopped, the sum of the remaining PUSCH compressed powers is not greater than the maximum transmit power of the UE.
  • the PUSCHs that are not stopped are allocated the respective compressed powers for information transmission, otherwise The transmitted PUSCHs are no longer allocated power, and each of the remaining PUSCHs is assigned its own required power transmission information.
  • FIG. 6 is a flow chart of a fourth method of uplink power compression provided by the present invention.
  • the fourth method includes:
  • Step 601 Perform power compression on the PUSCH on each uplink carrier according to a predetermined ratio.
  • step 301 The specific implementation of this step is the same as step 301.
  • Step 602 Determine whether the sum of the compressed powers of all PUSCHs is greater than the maximum transmit power of the user equipment. If yes, go to step 603; otherwise, go to step 605.
  • Step 603 stopping part of the PUSCH transmission information.
  • step 211 The specific implementation of this step is the same as step 211.
  • Step 604 Determine whether the sum of powers of the remaining PUSCHs is greater than the maximum transmit power of the user equipment. If yes, return to step 601; otherwise, go to step 605.
  • Step 605 Each PUSCH adopts power transmission information allocated according to the power compression result.
  • This step is the same as step 508.
  • the user equipment uses a total of five carriers, and the uplink channel carried in each carrier includes only the PUCCH.
  • the uplink channel carried in each carrier includes only the PUCCH.
  • FIG. 7 is a time slot distribution diagram of uplink information transmission using multiple PUCCHs at the same time, which only exemplarily shows a time slot distribution for uplink information transmission using multiple PUCCHs at the same time, as long as there are two or more PUCCHs. The same situation exists at the same time, and is not used to limit the specific time slot distribution of the PUCCH.
  • FIG. 8 is a flowchart of a fifth method for uplink power compression provided by the present invention.
  • the third method specifically includes:
  • Step 801 Determine an order of power compression for each PUCCH.
  • step 206 The specific implementation of this step is the same as step 206.
  • Step 802 Perform power compression on the first PUCCH in the order of step 801.
  • Step 803 Determine whether the sum of the compressed powers of all PUCCHs is greater than the maximum transmit power of the user equipment. If yes, go to step 804, otherwise go to step 808.
  • Step 804 it is determined whether all PUCCHs have been subjected to power compression in the current cycle. If yes, go to step 806, otherwise go to step 805.
  • Step 805 Perform power compression on the next PUCCH in the order of step 801, and return to step 803.
  • step 210 The specific implementation of this step is the same as step 210.
  • Step 806 stopping part of the PUCCH to transmit information.
  • the suspended PUCCH may be the PUCCH that occupies the largest resource or has the smallest SRS signal.
  • Step 807 Determine whether the sum of the required power of the remaining PUCCH is greater than the maximum transmit power of the user equipment. If yes, return to step 801; otherwise, go to step 808.
  • Step 808 Each PUCCH adopts power transmission information allocated according to the power compression result.
  • step 508 The execution of this step is similar to the step 508. If the partial PUCCH transmission information is not stopped before step 808, or the partial PUCCH is stopped, and the sum of the remaining PUCCH compression powers is not greater than the maximum transmission power of the UE, the compressed power is allocated for each PUCCH. The information is transmitted, otherwise the power is no longer allocated for the PUCCH that stops transmitting, and the respective required power transmission information is allocated to the remaining PUCCHs.
  • FIG. 9 is a flow chart of a sixth method of uplink power compression provided by the present invention. As shown in FIG. 9, the sixth method includes:
  • Step 901 Perform power compression on the PUCCH on each uplink carrier according to a predetermined ratio.
  • step 303 The specific implementation of this step is the same as step 303.
  • Step 902 Determine whether the sum of the compressed powers of all PUCCHs is greater than the maximum transmit power of the user equipment. If yes, go to step 903, otherwise go to step 905.
  • Step 903 stopping part of the PUCCH to transmit information.
  • step 806 The specific implementation of this step is the same as step 806.
  • Step 904 Determine whether the sum of the required powers of the remaining PUCCHs is greater than the maximum transmit power of the user equipment. If yes, return to step 901; otherwise, go to step 905.
  • Step 905 Each PUCCH adopts power transmission information allocated according to the power compression result.
  • This step is the same as step 808.
  • the first embodiment compresses the PUSCH first. If the sum of the compressed powers is still greater than the maximum transmit power of the user equipment, the PUCCH can be compressed. The information transmission of the PUCCH is preferentially guaranteed. Since the PUCCH transmits the uplink feedback control information about the downlink data transmission, the PUSCH transmits the uplink data information. Therefore, the method of the first embodiment can preferentially ensure the correct transmission of the control information, thereby improving System stability.
  • the first method in each embodiment that is, determining whether the sum of the compressed powers of all the uplink channels is greater than the maximum transmit power of the user equipment after compressing one uplink channel, and determining whether to continue the power compression according to the determination result.
  • the accuracy of the power compression can be improved, and the uplink information transmission can be performed as much as possible according to the power required by the uplink channel when the transmission power of the user equipment is allowed, thereby ensuring the performance of the information transmission to the greatest extent.
  • the present invention also provides a user equipment capable of performing uplink power compression, as shown in the figure.
  • FIG. 10 is a structural diagram of a user equipment provided by the present invention.
  • the user equipment includes a power compression module 1001 and an information transmission module 1002.
  • the power compression module 1001 performs power compression on some or all of the uplink channels when the sum of the required powers of the at least two uplink channels currently used is greater than the maximum transmit power of the user equipment, until the sum of the powers after compression of the respective uplink channels is not greater than
  • the maximum transmit power of the user equipment transmits a transmission indication to the information transmission module 1002.
  • the information transmission module 1002 receives the transmission indication, and performs information transmission by using the part or all of the uplink channels according to the compressed power.
  • the power compression module 1001 When the uplink channel includes the physical uplink shared channel PUSCH and the physical uplink control channel PUCCH, the power compression module 1001 first compresses the power required by the PUSCH, and if the compressed power of all PUSCHs and PUCCHs is still greater than the user. The maximum transmit power of the device is then compressed for the power required by the PUCCH.
  • the power compression module 1001 may be in the order of small to large sounding reference signals SRS on each component carrier, or the order of the transport blocks occupied by the physical uplink channel, or the order of power required by the physical uplink channel. Or performing power compression on the uplink channel according to the order obtained by the combination of two or more of the size of the SRS, the size of the transport block, and the size of the required power.
  • the power compression module 1001 can determine whether the sum of the compressed power of each uplink channel is greater than the maximum transmit power of the user equipment, and if so, compress the power of the next uplink channel according to the sequence, until each The sum of the powers of the uplink channel compression is not greater than the maximum transmission power of the user equipment.
  • the power compression module 1001 can also perform all uplinks of the same type according to a predetermined ratio.
  • the channel performs power compression. For example, all PUSCHs are first power-compressed according to a predetermined ratio, and all PUCCHs are power-compressed at a predetermined ratio.
  • the power compression module 1001 may instruct the information transmission module 1002 to stop using the power of all the uplink channels of the current transmission information after the sum of the powers of all the uplink channels of the current transmission information is greater than the maximum transmission power of the user equipment.
  • the part of the uplink channel transmission information when the sum of the powers of all the uplink channels compressed by the remaining transmission information is greater than the maximum transmission power of the user equipment, continues to perform power compression on the uplink channel of the remaining transmission information, and all of the remaining transmission information
  • the indication information transmission module 1002 stops the partial uplink channel transmission information in the uplink channel that uses the remaining transmission information, until all the uplink channels of the remaining transmission information are compressed.
  • the sum of the powers is not greater than the maximum transmit power of the user equipment, and a transmission indication is sent to the information transmission module 1002.

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Description

一种上行功率压缩的方法和用户设备 技术领域
本发明涉及移动通信技术领域, 尤其涉及一种上行功率压缩的方法 和用户设备。 发明背景
在移动通信系统中, 用户设备(UE )进行上行传输时, 根据预定的 方法计算出上行传输所需的功率, 如果计算出的功率大于该 UE的最大 发射功率, 则 UE无法按照所需的功率进行上行传输, 该情形称为 UE 功率受限, 其中, 所述最大发射功率是指根据 UE类型而定的最大发射 功率或者 UE拥有的功率, 取二者的最小值。
上行传输和下行传输有 4艮大的区别, 其中非常重要的一点就是: 在 上行传输过程中, 由于 UE功率的不断消耗, 并且不能及时的补充能量, 所以 UE很容易出现功率受限的情形。
在长期演进系统第 8版本( LTE R8 )中, 上行传输仅使用一个载波, 并且对于某一个 UE 来说, 物理上行共享信道 ( Physical uplink shared channel, PUSCH )和物理上行控制信道 ( Physical uplink control channel, PUCCH )不能同时进行上行传输,因此 LTE R8系统将 PUSCH和 PUCCH 的功率最大值设置为该 UE类型所允许的最大发射功率。
在 LTE R8中,由于 UE最多以其所允许的最大发射功率进行上行传 输, 因此不会出现上行功率受限的问题。
在高级 LTE ( LTE-Advanced )系统中,提出了上行载波聚合的概念, 即上行传输可以使用多个载波, 将多个载波承载的信息聚合后进行发 射。 目前的 LTE-Advanced 系统在上行传输时最多可以同时采用五个上 行载波, 每个上行载波的带宽最多可以为 20M, 因此 LTE- Advanced系 统进行上行传输的最大带宽为 100M。
另外, 在 LTE- Advanced系统中, 对于某一个 UE来说, PUSCH和 PUCCH是可以同时传输的, 例如: 利用一个上行载波或者不同的上行 载波, 在一定的时间内 (例如一个时隙或者子帧内) 同时利用 PUSCH 和 PUCCH进行上行传输。
在 LTE-Advanced系统中,对于某一个 UE来说,在不同的上行载波 或者同一个上行载波上, 利用两个或者以上的上行信道进行上行传输 时, UE根据预先设定的方法计算出各个物理上行信道所需的功率, 当 各个上行信道所需的功率之和大于该 UE的最大发射功率时, 如果 UE 直接将各个上行信道传输的信息按照所计算的功率聚合后进行发射, 将 导致聚合后的发射信号的功率大于该 UE的最大发射功率, 即出现 UE 功率受限问题。
目前, 对于同时利用两个或者以上的物理信道进行上行传输的系统 出现的功率受限问题, 还没有特别详细的解决方案。 发明内容
有鉴于此, 本发明实施例的目的在于提供一种上行功率压缩的方法 和用户设备, 以解决在采用两个或者以上的上行信道进行上行传输时出 现的功率受限的问题。
为达到上述目的, 本发明实施例的技术方案具体是这样实现的: 一种上行功率压缩的方法, 该方法包括:
同时采用至少两个上行信道传输信息, 在各个上行信道所需功率之 和大于用户设备的最大发射功率时, 对部分或全部上行信道进行功率压 缩, 直至各个上行信道压缩后的功率之和不大于用户设备的最大发射功 率, 所述部分或全部上行信道分别按照压缩后的功率进行信息传输。 一种用户设备, 该用户设备包括功率压缩模块和信息传输模块; 所述功率压缩模块, 在当前采用的至少两个上行信道所需功率之和 大于用户设备的最大发射功率时, 对部分或全部上行信道进行功率压 缩, 直至各个上行信道压缩后的功率之和不大于用户设备的最大发射功 率, 向信息传输模块发送传输指示;
所述信息传输模块, 接收传输指示, 利用所述部分或全部上行信道 按照压缩后的功率进行信息传输。
可见, 当用户设备同时采用至少两个上行信道传输信息时, 本发明 在各个上行信道所需功率之和大于用户设备的最大发射功率时, 即在出 现功率受限的情况时, 对部分或全部的上行信道进行功率压缩, 例如将 部分或全部上行信道所需的功率乘以一个系数(该系数的范围为 [0,1] ), 或者将所需的功率减小一定的数值, 直至各个上行信道压缩后的功率之 和不大于用户设备的最大发射功率, 上行信道按照压缩后的功率进行信 息传输, 从而解决了功率受限的问题。 附图简要说明
图 1是同时采用多个 PUSCH和 PUCCH进行上行信息传输的时隙分 布图。
图 2是本发明提供的上行功率压缩的第一方法流程图。
图 3是本发明提供的上行功率压缩的第二方法流程图。
图 4是同时采用多个 PUSCH进行上行信息传输的时隙分布图。 图 5是本发明提供的上行功率压缩的第三方法流程图。
图 6是本发明提供的上行功率压缩的第四方法流程图。
图 7是同时采用多个 PUCCH进行上行信息传输的时隙分布图。 图 8是本发明提供的上行功率压缩的第五方法流程图。
图 9是本发明提供的上行功率压缩的第六方法流程图。
图 10是本发明提供的用户设备的结构图。 实施本发明的方式
为使本发明的目的、 技术方案及优点更加清楚明白, 以下参照附图 并举实施例, 对本发明进一步详细说明。
采用本发明的上行功率压缩的方法,可以解决上行载波聚合场景下, UE功率受限的问题。 并且由于在功率压缩时, 先考虑对 PUSCH进行压 缩, 如有需要再对 PUCCH进行功率压缩。 这样的话, 对上行反馈控制 信息的 PUCCH的影响尽可能的小, 由于 PUCCH承载的是关于下行数 据传输的上行反馈信息, 所以在最大程度上减少了对下行数据传输的影 响; 同时在对 PUSCH进行功率压缩时, 考虑了不同 PUSCH的区别, 进 行不同程度的功率压缩, 所以也在最大程度上保证了上行数据的传输。
本发明提供的上行功率压缩的方法具体包括: 如果同时采用至少两 个上行信道传输信息, 则在各个上行信道所需功率之和大于用户设备的 最大发射功率时, 对部分或全部上行信道进行功率压缩, 直至各个上行 信道压缩后的功率之和不大于用户设备的最大发射功率, 所述部分或全 部上行信道分别采用压缩后的功率进行信息传输。
其中, 同时采用的至少两个上行信道可以都是 PUSCH、 或者都是 PUCCH , 也可以既包括 PUSCH又包括 PUCCH。
在对部分或全部上行信道进行功率压缩时, 可以按照探测参考信号 SRS由小到大的顺序、 或者上行信道占用的传输块由大到小的顺序、 或 者所需功率由大到小的顺序, 或者根据 SRS的大小、 传输块的大小、 所 需功率的大小中至少两个因素的组合所得到的顺序, 对上行信道按照一 定的顺序进行功率压缩, 当然对于不同的上行信道, 可以按照不同的比 例进行功率压缩; 即每压缩完一个上行信道的功率, 就判断各个上行信 道压缩后的功率之和是否大于用户设备的最大发射功率, 如果是, 按照 所述顺序压缩下一个上行信道的功率, 直至各个上行信道压缩后的功率 之和不大于用户设备的最大发射功率。
或者在对部分或全部上行信道进行功率压缩时, 按照预定的比例对 同一类型的全部上行信道进行功率压缩, 例如对所有 PUSCH按照预定 的比例进行功率压缩, 或者对所有 PUCCH按照预定的比例进行功率压 缩。 其中, 可以对不同的上行信道采用相同的比例进行功率压缩, 也可 以采用不同的比例进行功率压缩。
其中, 本发明还可以停止采用其中的部分上行信道传输信息, 或者 循环地对上行信道进行功率压缩, 例如: 对当前传输信息的上行信道 1 和 2进行功率压缩, 在当前传输信息的全部上行信道 1和 2压缩后的功 率之和大于用户设备的最大发射功率时, 停止采用其中的部分上行信 道, 比如信道 1 , 传输信息, 在剩余传输信息的全部上行信道, 比如信 道 2, 压缩前所需功率之和大于用户设备的最大发射功率时, 返回对当 前传输信息的上行信道 2进行功率压缩的步骤, 在剩余传输信息的全部 上行信道, 比如信道 2, 压缩前所需功率之和不大于用户设备的最大发 射功率时, 剩余传输信息的全部上行信道分别采用各自所需的功率进行 信息传输, 即, 在上面的例子中, 剩余传输信息的信道 2采用压缩前所 需的功率进行信息传输; 在当前传输信息的全部上行信道, 比如, 信道 1 和信道 2, 压缩后的功率之和不大于用于设备的最大发射功率时, 当 前传输信息的全部上行信道, 比如, 信道 1和信道 2, 分别采用各自压 缩后的功率进行信息传输。
在进行功率压缩时, 每个上行信道每次功率压缩的比例不超过预定 阈值, 以免功率压缩过多, 对信号传输的性能产生太大的影响。
下面分别针对同时采用的至少两个上行信道既包括 PUSCH又包括 PUCCH, 或者都是 PUSCH、 或者都是 PUCCH的情况, 给出利用本发 明进行功率压缩的优选实施例。 这里的同时是指在一定的时间段内, 例 如在一个子帧内或者在一个时隙内。
第一实施例, 用户设备共采用 5个上行载波, 每个上行载波中既承 载了 PUCCH也承载了 PUSCH, 具体请参见图 1、 2和 3。
图 1是同时采用多个 PUSCH和 PUCCH进行上行信息传输的时隙分 布图, 其仅示例性地给出了同时采用多个 PUSCH和 PUCCH进行上行 信息传输的时隙分布情况, 对于 PUSCH和 PUCCH同时存在的情形都 是适用的, 并非用于限制 PUSCH和 PUCCH的具体时隙分布。
图 2是本发明提供的上行功率压缩的第一方法流程图。
参见图 2, 该第一方法具体包括:
步骤 201 , 确定对各个 PUSCH进行功率压缩的顺序。
本步骤中,可以根据各个载波上的探测参考信号( Sounding reference signal, SRS ) 由小到大的顺序、 PUSCH承载的传输块的由大到小的顺 序、 PUSCH所需功率由大到小的顺序或者 PUSCH是否承载上行控制信 息( Uplink Control Information )的顺序等依次对 PUSCH进行功率压缩, 也可以综合考虑以上各个或者部分因素确定对 PUSCH进行功率压缩的 顺序。
步骤 202,按照步骤 201所确定的顺序对第一个 PUSCH进行功率压 缩。
步骤 203,判断所有 PUSCH和 PUCCH压缩后的功率之和是否大于 用户设备的最大发射功率, 如果是, 执行步骤 204, 否则执行步骤 213。
步骤 204, 判断在本次循环中是否所有的 PUSCH均已进行功率压 缩, 如果是, 执行步骤 206, 否则执行步骤 205。
步骤 205,按照步骤 201的顺序对下一个 PUSCH进行功率压缩,返 回步骤 203。
其中,每次对 PUSCH进行功率压缩后,压缩后的功率值与该 PUSCH 压缩前所需功率值之间的比值不能小于预定值 , 以免影响该
PUSCH的传输性能。 其中的 "^,可以依据 PUSCH所占资源数的大小 等因素来确定, 可以为不同上行载波上的 PUSCH配置不同的^^^ , 当然为了实现的筒单和易操作性, 也可以为多个上行载波上的 PUSCH 配置相同的 ^^。 需要说明的是, 如果对某个上行载波上的 PUSCH 的压缩比例不需要^ 那么小, 此时全部上行信道所需的上行功率已 经不超过 UE的最大传输功率, 则只需压缩一定的功率, 使得总的上行 传输功率为 UE的最大传输功率即可。
步骤 206, 确定对各个 PUCCH进行功率压缩的顺序。
本步骤中, 可以根据各个载波上的 SRS 信号由小到大的顺序或者 PUCCH所需功率由大到小的顺序依次对各个 PUCCH进行功率压缩。或 者综合考虑 SRS信号的大小和 PUCCH所需功率的大小按照一定的顺序 对各个 PUCCH进行功率压缩。
步骤 207, 按照步骤 206的顺序对第一个 PUCCH进行功率压缩。 本步骤中, 可以按照 SRS由小到大的顺序或者 PUCCH所需功率由 大到小的顺序依次对 PUCCH进行功率压缩, 或者综合考虑 SRS信号的 大小和 PUCCH所需功率确定对 PUCCH进行功率压缩的顺序。
步骤 208,判断所有 PUSCH和 PUCCH压缩后的功率之和是否大于 用户设备的最大发射功率, 如果是, 执行步骤 209, 否则执行步骤 213。
步骤 209, 判断在本次循环中是否所有的 PUCCH均已进行功率压 缩, 如果是, 执行步骤 211 , 否则执行步骤 210。
步骤 210,按照步骤 206的顺序对下一个 PUCCH进行功率压缩,返 回步骤 208。
其中,每次对 PUCCH进行功率压缩后,压缩后的功率值与该 PUCCH 压缩前所需功率值之间的比值不能小于预定值 Pw'k , 以免影响该
PUCCH的传输性能。 其中的 A"CCH,可以依据 PUCCH所占资源数的大 小等因素来确定, 可以为不同载波上的 PUCCH配置不同的 At/ccH, , 当 然为了实现的筒单和易操作性, 也可以为多个载波上的 PUCCH都配置 相同的 P 。 需要说明的是, 如果对某个上行载波上的 PUCCH的压 缩比例不需要 A^c^那么小, 此时全部上行信道所需的上行功率已经不 超过 UE的最大传输功率, 则只需压缩一定的功率, 使得总的上行传输 功率为 UE的最大传输功率即可。
步骤 211 , 停止部分 PUSCH传输信息。
本步骤中, 可以只暂停一个 PUSCH。 被暂停的 PUSCH可以是占用 资源最大的或者对应的 SRS信号最小的 PUSCH。
步骤 212,判断剩余 PUSCH和 PUCCH所需功率之和是否大于用户 设备的最大发射功率, 如果是, 返回步骤 201 , 否则执行步骤 213。
从步骤 212返回步骤 201后, 步骤 201对剩余的 PUSCH和 PUCCH 或者从剩余的 PUSCH中再停掉部分 PUSCH传输信息。
需要说明的是, 为了操作以及实现的筒单性, 上述功率压缩过程可 以只对 PUSCH 信道进行, 而不考虑 PUCCH。 也就是说上面的参数 β puccH, H为 i。 步骤 213, 各个上行信道采用根据功率压缩结果分配的功率传输信 息。
如果在本步骤之前没有停掉部分上行信道, 或者停掉部分上行信道 后, 剩余上行信道压缩后的功率之和不大于 UE的最大发射功率, 则本 步骤中为各个上行信道分配各自压缩后的功率进行信息传输, 否则对于 停止传输的上行信道不再分配功率, 并且对于剩余上行信道分别为其分 配各自所需的功率进行信息传输。
其中, 对于停止部分上行信道的方案, 相当于将停止的上行信道的 功率压缩为 0, 将剩余的上行信道的功率没有进行压缩, 或者说保持为 其所需功率。
图 3是本发明提供的上行功率压缩的第二方法流程图。
如图 3所示, 该第二方法包括:
步骤 301 ,对每个上行载波上的 PUSCH按照预定的比例进行功率压 缩。
本步骤中, 该预定的比例是 PUSCH上压缩后的功率值与压缩前的 功率值的比值, 该预定的比例的取值不小于最小值 (0 < D , 其中的 RACH由所需压缩功率的大小而决定,所需压缩的功率越大, 系数 RACH越小。 也就是说, 可以先计算一下^^ H , 即, 上行各个信道所需 的总功率减去 UE的最大传输功率,然后除以上行各个载波上的 PUSCH 信道所需的总功率, 如果此系数大于1 _ ^«CH , 就按照 ^«CH对 PUSCH 进行功率压缩, 也就是说, 各个上行载波上的 PUSCH上行信道压缩后 的功率为 乘以该 PUSCH上行信道压缩前的功率; 如果此系数小于 — kp 就按照 对 PUSCH 进行功率压缩, 也就是说, 各个 PUSCH上行信道压缩后的功率为1 _CH乘以该 PUSCH上行信道压缩 前的功率。 通常各个上行载波上的 PUSCH采用相同的比例进行功率压 缩, 当然也可以采用不同的比例进行功率压缩。
为了便于理解, 现给出下面两个例子。
如果 UE的最大发射功率为 20, 为 0 , 上行各个 载波的 PUSCH和 PUCCH 的所需总功率为 24, 其中各个上行载波的 PUSCH的所需总功率为 18,各个上行载波的 PUCCH的所需总功率为 6,
U ;racH=^^ = ¾0.22>(l-0.8), 所以就按照^ 即, 0.8, 对各个
18 9
上行载波的 PUSCH上行信道进行功率压缩。此时压缩后的 PUSCH信道 的总功率为 18x0.8 = 14.4。
如果 UE的最大发射功率为 20, ^^Η^<^^η < 为 08, 上行各个 载波的 PUSCH和 PUCCH 的所需总功率为 21, 其中各个上行载波的
PUSCH的所需总功率为 15,各个上行载波的 PUCCH的所需总功率为 6,
„ 21-20 1 I 14 kPUSCH = =— «0.07 < (1-0.8) 1—— =— 则 15 15 , 所以就按照
Figure imgf000012_0001
即, 15 15 , 对各个上行载波的 PUSCH 上行信道进行功率压缩。 此时压缩后的 PUSCH信道的总功率为
Figure imgf000012_0002
步骤 302,判断所有 PUSCH和 PUCCH压缩后的功率之和是否大于 用户设备的最大发射功率, 如果是, 执行步骤 303, 否则执行步骤 307。
对于上面的第一个例子, 由于压缩后的 PUSCH 信道的总功率与 PUCCH总功率之和为 14.4+6=20.4>20, 所以执行步骤 303;
对于上面的第二个例子, 由于压缩后的 PUSCH 信道的总功率与
PUCCH总功率之和为 15χ + 6 = 20 , 所以执行步骤 307。
15
步骤 303,对每个上行载波上的 PUCCH按照预定的比例进行功率压 缩。
本步骤中, 该预定的比例是 PUCCH上压缩后的功率值与压缩前的 功率值的比值, 该预定的比例的取值不小于 k PUCCH (0 < k PUCCH < !) ,其中的 ^/CCH由所需压缩功率的大小而决定。也就是说,可以先计算一下 ^Η , 即, 压缩后的 PUSCH的功率加上 PUCCH所需功率, 用所得和减去 UE 的最大传输功率, 用所得差除以各个上行载波上的 PUCCH所需功率的 和, 如果此商值大于 1 _ k puccH , 就按照 k puccH对 PUCCH进行功率压缩, 也就是说, PUCCH上压缩后的功率为 "CCH乘以 PUCCH压缩前的功率; 如果此商值小于
Figure imgf000013_0001
PUCCH进行功率压缩, 也 就是说, PUCCH压缩后的功率为 PUCCH压缩前的功率。 通常各个上行载波上的 PUCCH采用相同的比例进行功率压缩, 当然也 可以采用不同的比例进行功率压缩。
对于上面的第一个例子, 如果 ^ (0 < ^ < 1)为 0.9 , 则 k;uccH = 204 - 20 = = 0.067 < (1- 0.9) , 所以就按照 1 - k UCCH对各个上行载
6 6
波的 PUCCH上行信道进行功率压缩。
步骤 304,判断所有 PUSCH和 PUCCH压缩后的功率之和是否大于 用户设备的最大发射功率, 如果是, 执行步骤 305, 否则执行步骤 307。
步骤 305, 停止部分 PUSCH传输信息。
本步骤的具体实现同步骤 211。
步骤 306,判断剩余 PUSCH和 PUCCH所需功率之和是否大于用户 设备的最大发射功率, 如果是, 返回步骤 301 , 否则执行步骤 307。
步骤 307, 各个上行信道采用根据功率压缩结果分配的功率传输信 息。 本步骤同步骤 213。
第二实施例, 用户设备共采用 5个载波, 每个载波中承载的上行信 道仅包括 PUSCH, 具体请参见图 4、 5和 6。
图 4是同时采用多个 PUSCH进行上行信息传输的时隙分布图, 其 仅示例性地给出了同时采用多个 PUSCH进行上行信息传输的时隙分布 情况, 对于只要有至少两个 PUSCH同时存在的情形都是适用的, 并非 用于限制 PUSCH的具体时隙分布。
图 5是本发明提供的上行功率压缩的第三方法流程图。
参见图 5, 该第三方法具体包括:
步骤 501 , 确定对各个上行载波上的 PUSCH进行功率压缩的顺序。 本步骤的具体实现同步骤 201。
步骤 502, 按照步骤 501的顺序对第一个 PUSCH进行功率压缩。 步骤 503,判断所有 PUSCH压缩后的功率之和是否大于用户设备的 最大发射功率, 如果是, 执行步骤 504, 否则执行步骤 508。
步骤 504, 判断在本次循环中是否所有的 PUSCH均已进行功率压 缩, 如果是, 执行步骤 506, 否则执行步骤 505。
步骤 505,按照步骤 501的顺序对下一个 PUSCH进行功率压缩,返 回步骤 503。
本步骤的具体实现同步骤 205。
步骤 506, 停止部分 PUSCH传输信息。
本步骤的具体实现同步骤 211。
步骤 507,判断剩余 PUSCH所需功率之和是否大于用户设备的最大 发射功率, 如果是, 返回步骤 501 , 否则执行步骤 508。
步骤 508, 各个 PUSCH采用压缩后的功率传输信息。
本步骤的执行类似步骤 213 , 如果步骤 508 之前没有停止部分 PUSCH传输信息, 或者停掉部分 PUSCH后, 剩余 PUSCH压缩后的功 率之和不大于 UE 的最大发射功率, 则本步骤中为没有停掉的 PUSCH 分配各自压缩后的功率进行信息传输, 否则对于停止传输的 PUSCH不 再分配功率, 并且对于剩余 PUSCH分别为其分配各自所需的功率传输 信息。
图 6是本发明提供的上行功率压缩的第四方法流程图。
如图 6所示, 该第四方法包括:
步骤 601 ,对每个上行载波上的 PUSCH按照预定的比例进行功率压 缩。
本步骤的具体实现同步骤 301。
步骤 602,判断所有 PUSCH压缩后的功率之和是否大于用户设备的 最大发射功率, 如果是, 执行步骤 603 , 否则执行步骤 605。
步骤 603, 停止部分 PUSCH传输信息。
本步骤的具体实现同步骤 211。
步骤 604,判断剩余 PUSCH所需功率之和是否大于用户设备的最大 发射功率, 如果是, 返回步骤 601 , 否则执行步骤 605。
步骤 605, 各个 PUSCH采用根据功率压缩结果分配的功率传输信 息。
本步骤同步骤 508。
第三实施例, 用户设备共采用 5个载波, 每个载波中承载的上行信 道仅包括 PUCCH, 具体请参见图 7、 8和 9。
图 7是同时采用多个 PUCCH进行上行信息传输的时隙分布图, 其 仅示例性地给出了同时采用多个 PUCCH进行上行信息传输的时隙分布 情况,对于只要有两个或者以上的 PUCCH同时存在的情形都是适用的, 并非用于限制 PUCCH的具体时隙分布。 图 8是本发明提供的上行功率压缩的第五方法流程图。
参见图 8, 该第三方法具体包括:
步骤 801 , 确定对各个 PUCCH进行功率压缩的顺序。
本步骤的具体实现同步骤 206。
步骤 802, 按照步骤 801的顺序对第一个 PUCCH进行功率压缩。 步骤 803,判断所有 PUCCH压缩后的功率之和是否大于用户设备的 最大发射功率, 如果是, 执行步骤 804, 否则执行步骤 808。
步骤 804, 判断在本次循环中是否所有的 PUCCH均已进行功率压 缩, 如果是, 执行步骤 806, 否则执行步骤 805。
步骤 805,按照步骤 801的顺序对下一个 PUCCH进行功率压缩,返 回步骤 803。
本步骤的具体实现同步骤 210。
步骤 806, 停止部分 PUCCH传输信息。
本步骤中, 可以只暂停一个 PUCCH。被暂停的 PUCCH可以是占用 资源最大的或者对应的 SRS信号最小的 PUCCH。
步骤 807,判断剩余 PUCCH所需功率之和是否大于用户设备的最大 发射功率, 如果是, 返回步骤 801 , 否则执行步骤 808。
步骤 808, 各个 PUCCH采用根据功率压缩结果分配的功率传输信 息。
本步骤的执行类似步骤 508 , 如果步骤 808 之前没有停止部分 PUCCH传输信息, 或者停止部分 PUCCH后, 剩余 PUCCH压缩或的功 率之和不大于 UE的最大发射功率, 则为各个 PUCCH分配压缩后的功 率传输信息, 否则对于停止传输的 PUCCH不再分配功率, 并且对于剩 余 PUCCH分别为其分配各自所需的功率传输信息。
图 9是本发明提供的上行功率压缩的第六方法流程图。 如图 9所示, 该第六方法包括:
步骤 901 ,对每个上行载波上的 PUCCH按照预定的比例进行功率压 缩。
本步骤的具体实现同步骤 303。
步骤 902,判断所有 PUCCH压缩后的功率之和是否大于用户设备的 最大发射功率, 如果是, 执行步骤 903, 否则执行步骤 905。
步骤 903 , 停止部分 PUCCH传输信息。
本步骤的具体实现同步骤 806。
步骤 904,判断剩余 PUCCH所需功率之和是否大于用户设备的最大 发射功率, 如果是, 返回步骤 901 , 否则执行步骤 905。
步骤 905 , 各个 PUCCH采用根据功率压缩结果分配的功率传输信 息。
本步骤同步骤 808。
由上述方案可见, 当同时传输信息的上行信道既包括 PUSCH又包 括 PUCCH时, 第一实施例通过先压缩 PUSCH, 如果压缩后的功率之和 仍然大于用户设备的最大发射功率, 再压缩 PUCCH, 可以优先保证 PUCCH的信息传输,由于 PUCCH传输的是关于下行数据传输的上行反 馈控制信息, PUSCH传输的是上行数据信息, 因此, 通过第一实施例 的方法可以优先保证控制信息的正确传输, 从而提高系统稳定性。
另外, 在各个实施例中的第一种方法, 即每压缩完一个上行信道即 判断所有上行信道压缩后的功率之和是否大于用户设备的最大发射功 率, 再根据判断结果决定是否继续进行功率压缩, 可以提高进行功率压 缩的准确性, 保证在用户设备的发射功率允许的情况下, 尽可能按照上 行信道所需功率进行上行信息传输, 因此能够最大程度上保证信息传输 的性能。 本发明还提供了能够进行上行功率压缩的用户设备, 具体请参见图
10。
图 10是本发明提供的用户设备的结构图。
如图 10所示, 该用户设备包括功率压缩模块 1001和信息传输模块 1002。
功率压缩模块 1001 , 在当前采用的至少两个上行信道所需功率之和 大于用户设备的最大发射功率时, 对部分或全部上行信道进行功率压 缩, 直至各个上行信道压缩后的功率之和不大于用户设备的最大发射功 率, 向信息传输模块 1002发送传输指示。
信息传输模块 1002, 接收传输指示, 按照压缩后的功率利用所述部 分或全部上行信道进行信息传输。
其中, 所述上行信道包括物理上行共享信道 PUSCH和物理上行控 制信道 PUCCH时, 功率压缩模块 1001先对 PUSCH所需的功率进行压 缩, 如果压缩后所有 PUSCH和 PUCCH所需的功率之和仍然大于用户 设备的最大发射功率, 再对 PUCCH所需的功率进行压缩。
功率压缩模块 1001 可以按照各个分量载波上的探测参考信号 SRS 由小到大的顺序、 或者物理上行信道占用的传输块由大到小的顺序、 或 者物理上行信道所需功率由大到小的顺序, 或者根据 SRS的大小、传输 块的大小、 所需功率的大小中两个或者以上因素的组合所得到的顺序, 对上行信道进行功率压缩。
功率压缩模块 1001可以每压缩完一个上行信道的功率,判断各个上 行信道压缩后的功率之和是否大于用户设备的最大发射功率, 如果是, 按照所述顺序压缩下一个上行信道的功率, 直至各个上行信道压缩后的 功率之和不大于用户设备的最大发射功率。
功率压缩模块 1001 还可以按照预定的比例对同一类型的全部上行 信道进行功率压缩。 例如, 按照预定的比例先对全部的 PUSCH进行功 率压缩, 再按照预定的比例对全部的 PUCCH进行功率压缩。
功率压缩模块 1001 , 可以在对当前传输信息的全部上行信道进行功 率压缩后, 在当前传输信息的全部上行信道压缩后的功率之和大于用户 设备的最大发射功率时, 指示信息传输模块 1002停止采用其中的部分 上行信道传输信息, 在剩余传输信息的全部上行信道压缩后的功率之和 大于用户设备的最大发射功率时, 继续对剩余传输信息的上行信道进行 功率压缩, 并在剩余传输信息的全部上行信道压缩后的功率之和大于用 户设备的最大发射功率时, 指示信息传输模块 1002停止采用所述剩余 传输信息的上行信道中的部分上行信道传输信息, 直至剩余传输信息的 全部上行信道压缩后的功率之和不大于用户设备的最大发射功率, 向信 息传输模块 1002发送传输指示。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的 保护范围, 凡在本发明的精神和原则之内所做的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种上行功率压缩的方法, 其特征在于, 该方法包括: 同时采用至少两个上行信道传输信息, 在各个上行信道所需功率之 和大于用户设备的最大发射功率时, 对部分或全部上行信道进行功率压 缩, 直至各个上行信道压缩后的功率之和不大于用户设备的最大发射功 率, 所述部分或全部上行信道分别采用压缩后的功率进行信息传输。
2、根据权利要求 1所述的方法, 其特征在于, 所述上行信道包括物 理上行共享信道 PUSCH和物理上行控制信道 PUCCH;所述对部分或全 部上行信道所需的功率进行压缩包括:
先对 PUSCH 所需的功率进行压缩, 如果压缩后所有 PUSCH 和 PUCCH 所需的功率之和仍然大于用户设备的最大发射功率, 再对 PUCCH所需的功率进行压缩。
3、 根据权利要求 1 所述的方法, 其特征在于, 所述上行信道是 PUSCH或者是 PUCCH。
4、 根据权利要求 1所述的方法, 其特征在于, 所述上行信道包括物 理上行共享信道 PUSCH和物理上行控制信道 PUCCH;所述对部分或全 部上行信道所需的功率进行压缩包括:
仅对 PUSCH所需的功率进行压缩。
5、 根据权利要求 2或 3或 4所述的方法, 其特征在于, 所述对部分 或全部上行信道进行功率压缩包括:
按照探测参考信号 SRS由小到大的顺序、或者物理上行信道占用的 传输块由大到小的顺序、 或者物理上行信道所需功率由大到小的顺序, 或者根据 SRS的大小、传输块的大小、 所需功率的大小中至少两个因素 的组合所得到的顺序, 对上行信道进行功率压缩。
6、根据权利要求 5所述的方法, 其特征在于, 所述对上行信道进行 功率压缩包括:
每压缩完一个上行信道的功率, 判断各个上行信道压缩后的功率之 和是否大于用户设备的最大发射功率, 如果是, 按照所述顺序压缩下一 个上行信道的功率, 直至各个上行信道压缩后的功率之和不大于用户设 备的最大发射功率。
7、根据权利要求 2或 3或 4所述的方法, 其特征在于, 所述对部分 或全部上行信道所需的功率进行压缩包括:
按照预定的比例对同一类型的全部上行信道进行功率压缩。
8、 根据权利要求 2或 3或 4所述的方法, 其特征在于, 所述对部分 或全部上行信道进行功率压缩, 直至各个上行信道压缩后的功率之和不 大于用户设备的最大发射功率, 所述部分或全部上行信道分别采用压缩 后的功率进行信息传输包括:
对当前传输信息的上行信道进行功率压缩, 在当前传输信息的全部 上行信道压缩后的功率之和大于用户设备的最大发射功率时, 停止采用 其中的部分上行信道传输信息, 在剩余传输信息的全部上行信道压缩前 所需功率之和大于用户设备的最大发射功率时, 返回对当前传输信息的 上行信道进行功率压缩的步骤, 在剩余传输信息的全部上行信道压缩前 所需功率之和不大于用户设备的最大发射功率时, 剩余传输信息的全部 上行信道分别采用各自压缩前所需的功率进行信息传输;
在当前传输信息的全部上行信道压缩后的功率之和不大于用于设备 的最大发射功率时, 当前传输信息的全部上行信道分别采用各自压缩后 的功率进行信息传输。
9、一种用户设备, 其特征在于, 该用户设备包括功率压缩模块和信 息传输模块; 所述功率压缩模块, 在当前采用的至少两个上行信道所需功率之和 大于用户设备的最大发射功率时, 对部分或全部上行信道进行功率压 缩, 直至各个上行信道压缩后的功率之和不大于用户设备的最大发射功 率, 向信息传输模块发送传输指示;
所述信息传输模块, 接收传输指示, 按照压缩后的功率利用所述部 分或全部上行信道进行信息传输。
10、 根据权利要求 9所述的用户设备, 其特征在于, 所述上行信道 包括物理上行共享信道 PUSCH和物理上行控制信道 PUCCH;
所述功率压缩模块, 先对 PUSCH所需的功率进行压缩, 如果压缩 后所有 PUSCH和 PUCCH所需的功率之和仍然大于用户设备的最大发 射功率, 再对 PUCCH所需的功率进行压缩。
11、 根据权利要求 9所述的用户设备, 其特征在于,
所述功率压缩模块, 按照探测参考信号 SRS由小到大的顺序、 或者 占用的传输块由大到小的顺序、 或者所需功率由大到小的顺序, 或者根 据 SRS的大小、传输块的大小、 所需功率的大小中至少两个因素的组合 所得到的顺序, 对上行信道进行功率压缩。
12、 根据权利要求 11所述的用户设备, 其特征在于,
所述功率压缩模块, 每压缩完一个上行信道的功率, 判断各个上行 信道压缩后的功率之和是否大于用户设备的最大发射功率, 如果是, 按 照所述顺序压缩下一个上行信道的功率, 直至各个上行信道压缩后的功 率之和不大于用户设备的最大发射功率。
13、 根据权利要求 9所述的用户设备, 其特征在于,
所述功率压缩模块, 按照预定的比例对同一类型的全部上行信道进 行功率压缩。
14、 根据权利要求 9所述的用户设备, 其特征在于, 所述功率压缩模块, 对当前传输信息的上行信道进行功率压缩, 在 当前传输信息的全部上行信道压缩后的功率之和大于用户设备的最大 发射功率时, 停止采用其中的部分上行信道传输信息, 在剩余传输信息 的全部上行信道所需功率之和大于用户设备的最大发射功率时, 返回对 当前传输信息的上行信道进行功率压缩的步骤, 在剩余传输信息的全部 上行信道所需功率之和不大于用户设备的最大发射功率时, 剩余传输信 息的全部上行信道分别采用各自所需的功率进行信息传输; 在当前传输 信息的全部上行信道压缩后的功率之和不大于用户设备的最大发射功 率时, 当前传输信息的全部上行信道分别采用各自压缩后的功率进行信 息传输。
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