WO2016119529A1 - 载波聚合下调度请求的发送方法、装置和终端、存储介质 - Google Patents

载波聚合下调度请求的发送方法、装置和终端、存储介质 Download PDF

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Publication number
WO2016119529A1
WO2016119529A1 PCT/CN2015/096870 CN2015096870W WO2016119529A1 WO 2016119529 A1 WO2016119529 A1 WO 2016119529A1 CN 2015096870 W CN2015096870 W CN 2015096870W WO 2016119529 A1 WO2016119529 A1 WO 2016119529A1
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Prior art keywords
serving cell
pucch
transmission
send
serving
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PCT/CN2015/096870
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English (en)
French (fr)
Inventor
黄河
杜忠达
余媛芳
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中兴通讯股份有限公司
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Priority to US15/547,150 priority Critical patent/US20180014323A1/en
Priority to EP15879727.4A priority patent/EP3253157A4/en
Publication of WO2016119529A1 publication Critical patent/WO2016119529A1/zh

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    • 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
    • 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
    • H04W52/30—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
    • H04W52/365—Power headroom reporting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to a mobile communication technology, and in particular, to a method, an apparatus, a terminal, and a storage medium for transmitting a scheduling request under carrier aggregation.
  • the spectrum used for mobile communication is dispersed at 800MHz, 900MHz, 1800MHz, 2100MHz, 2400MHz, 2600MHz. These dispersed spectrums can be aggregated into a large communication bandwidth by carrier aggregation technology, which increases the flexibility of spectrum application and improves spectrum utilization efficiency.
  • Carrier aggregation technology is the core technology to ensure that LTE can meet peak rate requirements and bandwidth requirements.
  • the terminal for 3GPP R8/R9 can only receive and transmit on one carrier, that is, only one serving cell; the carrier aggregation terminal of 3GPP R10 can receive and transmit simultaneously on up to 5 carriers, that is, there can be up to 5 services.
  • a cell as shown in FIG. 1 , is a primary cell (PCell, Primary Cell), and the other four are secondary cells (SCells, Secondary Cells).
  • the PCell is a cell that is initially accessed by a user equipment (UE), and is responsible for the UE. RRC communication between; SCell is added during RRC reconfiguration to provide additional radio resources.
  • UE user equipment
  • the PCell has an uplink and downlink carrier, and the secondary cell can only have a downlink carrier, but cannot have only an uplink carrier, and the physical uplink control channel (PUCCH) is only transmitted on the PCell, and the control information transmitted in the PUCCH includes an uplink resource scheduling request.
  • PUCCH physical uplink control channel
  • the load of the PCell carrying the PUCCH will increase significantly, which may result in a decrease in system performance and user experience.
  • the maximum number of polymerizable carriers that the LTE system can support It may rise to 32, for example, 1 PCell carrier, 31 SCell carriers.
  • the control information on all 32 cells can only be transmitted through the PUCCH on the PCell, then the PCell will face a huge Load, which may affect the normal operation of the PCell. Therefore, the 3GPP R13 proposes that the PUCCH can also be transmitted on the SCell.
  • the possible structure is as shown in FIG.
  • the PUCCH transmitted on the SCell is SPUCCH, which can reduce the load of the PUCCH on the PCell to a certain extent and improve system performance.
  • the SCell transmitting the PUCCH must have an uplink carrier, so the SCell having both the uplink and downlink carriers can potentially configure the PUCCH, for example, SCell 1, SCell 2, and SCell 4.
  • the Scheduling Request is used to apply for UL-SCH resources for new data transmission.
  • the SR When the SR is triggered, if the configured PUCCH can be used to transmit SR information and does not collide with the measurement interval, the UE will transmit the SR information through the PUCCH.
  • the transmission timing of the SR is configured by the upper layer.
  • the UE configures the index I SR according to the parameter sr-ConfigIndex SR of the network configuration, and obtains the SR transmission period SR Periodicit y, and the subframe offset N OFFSET, SR according to the formula:
  • the uplink subframe position at which SR transmission can be performed is calculated.
  • n f is the system frame number
  • n s is the slot number.
  • the UE has not considered the problem of SR transmission when multiple carriers are simultaneously configured with PUCCH.
  • the present invention mainly provides a method, an apparatus, a terminal, and a storage medium for transmitting a scheduling request under carrier aggregation.
  • the present invention provides a method for transmitting an SR under carrier aggregation, and the method includes:
  • the user equipment UE receives and stores the physical uplink control channel PUCCH configuration information and the SR configuration information on the multiple serving cells by using the radio resource control RRC message, and determines, when the SR needs to be sent, the multiple corresponding to the saved PUCCH configuration information according to the SR configuration information.
  • the serving cell selects the serving cell to send the SR.
  • the multiple serving cells include: PCell, SCell;
  • the SR configuration information includes a configuration mode and an SR parameter.
  • the configuration manner includes one of the following manners:
  • the SR parameters are independently configured for the serving cell that is allowed to send the SR.
  • the SR parameter includes at least one of the following: an SR configuration index sr-ConfigIndex, an SR enable indication, and a cell offset.
  • the serving cell when it is determined that the SR needs to be sent, the serving cell is selected to send the SR in the multiple serving cells corresponding to the saved PUCCH configuration information according to the SR configuration information, including: when the UE determines that the SR needs to be sent, the saved PUCCH configuration information is used.
  • Corresponding multiple serving cells according to the SR configuration information, determine, at each transmission time interval TTI, whether the PUCCH of the serving cell has an SR transmission opportunity, and if so, select the serving cell to send the SR in the serving cell to which the PUCCH having the SR transmission opportunity belongs. .
  • the selecting the serving cell to send the SR in the serving cell to which the PUCCH having the SR transmission opportunity belongs includes: selecting the serving cell to send the SR in the serving cell to which the PUCCH having the SR transmission opportunity belongs according to the selection principle, and the selection principle includes the following: At least one principle:
  • the UE arbitrarily selects a serving cell to send the SR
  • the UE selects the serving cell with the largest power headroom to send the SR
  • the UE selects to send the SR in the serving cell with the smallest TTI transmission power
  • the UE selects the serving cell with the highest priority according to the priority to send the SR;
  • the UE alternately selects the serving cell to send the SR
  • the serving cell is preferentially selected to send the SR.
  • the selecting the serving cell to send the SR in the serving cell to which the PUCCH having the SR transmission opportunity belongs according to the selection principle includes: the UE preferentially determining each serving cell Whether there is a serving cell that transmits ACK/NACK information in the PUCCH of the PUCCH format 3 in the current TTI, if yes, selects the serving cell to send the SR; if not, if there are multiple serving cells at the same time in the current TTI
  • the serving cell is selected to transmit the SR according to one of the other principles.
  • the determining, by using the SR configuration information, whether the PUCCH of the serving cell has an SR transmission occasion at each TTI includes:
  • the UE calculates the SR transmission opportunity and/or the serving cell where the SR transmission opportunity is located, using the SR configuration information of the network side.
  • the SR transmission timings on all serving cells are calculated by a set of SR parameters, and the SR transmission timings on different serving cells do not overlap.
  • the calculating the SR sending occasion includes: the UE obtaining the transmission period SR Periodicity of the SR on the serving cell according to the sr-ConfigIndex lookup table of the SR configuration information, and the subframe offset N OFFSET, SR , according to the formula: The uplink subframe position that allows SR transmission on each serving cell is separately calculated.
  • n f is the system frame number
  • n s is the slot number
  • SR Periodicity is the SR transmission period
  • N OFFSET is the subframe offset
  • N cell is the number of serving cells configured with PUCCH and allowing SR to be sent.
  • i is the serving cell number at which the SR transmission timing is located.
  • n f is the system frame number
  • n s is the slot number
  • SR Periodicity is the SR transmission period
  • N OFFSET is the subframe offset
  • N cell is the number of serving cells configured with PUCCH and allowing SR to be sent.
  • i is the serving cell number where the SR transmission opportunity is located
  • N celloffset is the serving cell offset.
  • the method further includes: the UE determines that the PUCCH of the serving cell owns the SR After sending the opportunity, the SR information is discarded at the current TTI according to at least one of the following factors:
  • the serving cell currently having the SR transmission opportunity is performing a random access channel RACH procedure
  • the serving cell that currently has the SR transmission opportunity is in the measurement interval measurementgap;
  • the SR sending opportunity with a higher priority after the specified time includes at least one of the following:
  • the serving cell where the SR transmission timing is after the specified time has a larger power head
  • the serving cell where the SR transmission timing is after the specified time is smaller in the relevant TTI transmission power
  • the SR transmission timing after the specified time occurs in the serving cell with higher priority
  • the serving cell After the specified time, the serving cell will transmit ACK/NACK information using the PUCCH of PUCCH format 3.
  • the present invention provides a device for transmitting a scheduling request under carrier aggregation, the device comprising: a receiving and saving module, and an SR sending module;
  • the receiving and saving module is configured to receive and save PUCCH configuration information and SR configuration information on multiple serving cells by using an RRC message;
  • the SR sending module is configured to: when determining that the SR needs to be sent, select the serving cell to send the SR among the multiple serving cells corresponding to the saved PUCCH configuration information according to the SR configuration information.
  • the multiple serving cells include: PCell, SCell;
  • the SR configuration information includes a configuration mode and an SR parameter.
  • the configuration manner includes one of the following manners:
  • the SR parameters are independently configured for the serving cell that is allowed to send the SR.
  • the SR parameter includes at least one of the following: an sr-ConfigIndex, an SR enable indication, and a cell offset.
  • the SR sending module specifically includes: a determining module and a selecting sending module, where
  • the determining module is configured to determine, when the SR needs to be sent, the plurality of serving cells corresponding to the saved PUCCH configuration information, and determine, according to the SR configuration information, whether each PUCCH of the serving cell has an SR transmission opportunity according to the SR configuration information, and if yes, notify the sending Module
  • the sending module is configured to select the serving cell to send the SR in the serving cell to which the PUCCH having the SR transmission opportunity belongs.
  • the selecting and sending module is further configured to select a serving cell to send an SR in a serving cell to which a PUCCH having an SR transmission opportunity belongs according to a selection principle, where the selection principle includes at least one of the following principles:
  • the serving cell is preferentially selected to send the SR.
  • the selection sending module is further configured to preferentially determine whether a serving cell in each serving cell adopts a PUCCH of PUCCH format 3 in the current TTI. Sending ACK/NACK information, if any, selecting the serving cell to send the SR; if not or if there are multiple serving cells at the same time
  • the TTI uses the PUCCH of the PUCCH format 3 to transmit ACK/NACK information, and then selects the serving cell to transmit the SR according to one of the other principles.
  • the determining module is further configured to calculate, by using SR configuration information on the network side, an SR transmission timing and/or a serving cell where the SR transmission timing is located.
  • the SR transmission timings on all serving cells are calculated by a set of SR parameters, and the SR transmission timings on different serving cells do not overlap.
  • the determining module is further configured to obtain a transmission period SR Periodicity of the SR on the serving cell according to the sr-ConfigIndex lookup table of the SR configuration information, and a subframe offset N OFFSET, SR , and according to the formula: The uplink subframe position that allows SR transmission on each serving cell is separately calculated.
  • n f is the system frame number
  • n s is the slot number
  • SR Periodicity is the SR transmission period
  • N OFFSET is the subframe offset
  • N cell is the number of serving cells configured with PUCCH and allowing SR to be sent.
  • i is the serving cell number at which the SR transmission timing is located.
  • n f is the system frame number
  • n s is the slot number
  • SR Periodicity is the SR transmission period
  • N OFFSET is the subframe offset
  • N cell is the number of serving cells configured with PUCCH and allowing SR to be sent.
  • i is the serving cell number where the SR transmission opportunity is located
  • N celloffset is the serving cell offset.
  • the apparatus further includes a relining module configured to, after the determining module determines that the PUCCH of the serving cell has an SR transmission opportunity, abandon sending the SR information in the current TTI according to at least one of the following factors:
  • the serving cell that currently has the SR transmission opportunity is performing the RACH procedure
  • the serving cell that currently has the SR transmission opportunity is in measurementgap;
  • the SR sending opportunity with a higher priority after the specified time includes at least one of the following:
  • the serving cell where the SR transmission timing is after the specified time has a larger power head
  • the serving cell where the SR transmission timing is after the specified time is smaller in the relevant TTI transmission power
  • the SR transmission timing after the specified time occurs in the serving cell with higher priority
  • the serving cell After the specified time, the serving cell will transmit ACK/NACK information using the PUCCH of PUCCH format 3.
  • the present invention provides a UE, where the UE includes the sending apparatus of the scheduling request under carrier aggregation.
  • the present invention provides a storage medium in which a computer program is stored, the computer program being configured to perform the method of transmitting a scheduling request SR under the carrier aggregation.
  • the present invention provides a method, a device, and a terminal for transmitting a scheduling request in a carrier aggregation.
  • the UE receives and stores PUCCH configuration information and SR configuration information on multiple serving cells through an RRC message, and determines that the SR configuration information needs to be sent according to the SR configuration information.
  • the serving cell is selected to transmit the SR among the plurality of serving cells corresponding to the saved PUCCH configuration information. In this manner, the SR transmission problem when multiple carriers are simultaneously configured in the PUCCH in the carrier aggregation scenario can be solved.
  • FIG. 1 is a schematic diagram of a carrier aggregation terminal transmitting a PUCCH only in a primary cell
  • FIG. 2 is a schematic diagram of a carrier aggregation terminal transmitting a PUCCH in a secondary cell
  • FIG. 3 is a schematic flowchart of a method for sending a scheduling request in carrier aggregation according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a device for sending a scheduling request under carrier aggregation according to an embodiment of the present invention.
  • the UE receives and stores the PUCCH configuration information and the SR configuration information on the multiple serving cells through the RRC message, and determines that the SR configuration information is to be used in multiple serving cells corresponding to the saved PUCCH configuration information according to the SR configuration information. Select the serving cell to send the SR.
  • the embodiment of the invention implements a method for sending a scheduling request under carrier aggregation. As shown in FIG. 3, the method includes the following steps:
  • Step 301 The UE receives and saves PUCCH configuration information and SR configuration information on multiple serving cells by using an RRC message.
  • the plurality of serving cells include: a PCell and an SCell; and the SR configuration information includes a configuration mode and an SR parameter, where the configuration mode may be one of the following manners:
  • the SR parameters are independently configured for the serving cell that is allowed to send the SR.
  • SR enable indication is separately configured for each serving cell, and the SR enable indication is used to indicate whether a PUCCH on a certain serving cell or a certain serving cell can transmit an SR. In this way, the UE needs to combine the two parts of the SR parameters and use them.
  • the SR parameter includes at least one of the following: an sr-ConfigIndex, an SR enable indication, and a cell offset, where the SR enable indication is used to indicate whether a PUCCH on a serving cell or a serving cell can be sent. SR, the cell offset is used to calculate the SR transmission opportunity Community.
  • Step 302 The UE determines that the SR needs to be sent, and selects the serving cell to send the SR among the multiple serving cells corresponding to the saved PUCCH configuration information according to the SR configuration information.
  • the multiple serving cells corresponding to the saved PUCCH configuration information determine, according to the SR configuration information, whether each PUCCH of the serving cell has an SR transmission opportunity, if any Then, the serving cell is selected to transmit the SR in the serving cell to which the PUCCH having the SR transmission opportunity belongs.
  • the selecting the serving cell to send the SR in the serving cell to which the PUCCH having the SR transmission opportunity belongs may be: selecting the serving cell to send the SR in the serving cell to which the PUCCH having the SR transmission opportunity belongs according to a preset selection principle, the selection principle Includes at least one of the following principles:
  • the UE arbitrarily selects a serving cell to send the SR
  • the UE selects the serving cell with the largest power headroom to send the SR
  • the UE selects to send the SR in the serving cell with the smallest TTI transmission power
  • the UE sends the SR according to the pre-defined priority to select the serving cell with the highest priority;
  • the predefined priority may be the priority agreed in the protocol or the priority configured by the network side through the RRC message;
  • the UE alternately selects the serving cell to send the SR
  • the serving cell is preferentially selected to transmit the SR.
  • the UE preferentially determines whether the serving cell in the serving cell sends the ACK/NACK information in the PUCCH of the PUCCH format 3 in the current TTI, if any, Selecting the serving cell to send the SR; if there is no or if at the same time, multiple serving cells send ACK/NACK information in the PUCCH of the PUCCH format 3 in the current TTI, the serving cell is selected according to one of the other principles.
  • Send SR Send SR.
  • the determining, according to the SR configuration information, whether the PUCCH of the serving cell has the SR transmission occasion at each TTI includes:
  • the UE calculates the SR transmission timing and/or the serving cell where the SR transmission opportunity is located, using the SR configuration information of the network side;
  • the constraint condition for calculating the SR transmission timing is:
  • the SR transmission timings on all serving cells are calculated by a set of SR parameters, and the SR transmission timings on different serving cells do not overlap;
  • the SR transmission timing is evenly distributed on the serving cell in which the PUCCH is configured and the SR transmission is allowed.
  • the calculating the SR transmission timing includes: the UE obtains the transmission period SR Periodicity of the SR on the serving cell according to the sr-ConfigIndex I SR lookup table of the SR configuration information, and the subframe offset N OFFSET, SR , and according to the formula: The uplink subframe position that can be transmitted by the SR on each serving cell is separately calculated.
  • the formula for calculating the serving cell in which the SR transmission timing is located is:
  • n f is the system frame number
  • n s is the slot number
  • SR Periodicity is the SR transmission period
  • N OFFSET is the subframe offset
  • N cell is the number of serving cells configured with PUCCH and allowing SR to be sent.
  • the serving cell offset may be added, where the serving cell offset is configured by the network side, such as an eNB, such that the formula for calculating the serving cell in which the SR transmission opportunity is located is:
  • N celloffset is the serving cell offset.
  • the method further includes: after determining that the PUCCH of the serving cell has an SR transmission opportunity, the UE relinquishes transmitting the SR information in the current TTI according to at least one of the following factors:
  • the serving cell currently having the SR transmission opportunity is performing a random access channel (RACH) process
  • the serving cell currently having the SR transmission opportunity is at a measurement interval (measurementgap);
  • the specified time may be configured by a protocol or by a base station by using an RRC message.
  • the serving cell where the SR transmission timing is after the specified time has a larger power head
  • the serving cell where the SR transmission timing is after the specified time is smaller in the relevant TTI transmission power
  • the SR transmission timing after the specified time occurs in the serving cell with higher priority
  • the serving cell After the specified time, the serving cell will transmit ACK/NACK information using the PUCCH of PUCCH format 3.
  • the present invention further provides a sending apparatus for scheduling a request under carrier aggregation.
  • the apparatus includes: a receiving and saving module 41, and an SR sending module 42;
  • the receiving and saving module 41 may be implemented by a memory of the UE, configured to receive and save PUCCH configuration information and SR configuration information on multiple serving cells by using an RRC message;
  • the SR transmitting module 42 may be implemented by the processor of the UE in combination with the memory, configured to determine that the SR needs to be sent, and select the serving cell to send the SR among the multiple serving cells corresponding to the saved PUCCH configuration information according to the SR configuration information;
  • the plurality of serving cells include: a PCell and an SCell; and the SR configuration information includes The configuration mode and the SR parameter, where the configuration mode may be one of the following modes:
  • the SR parameters are independently configured for the serving cell that is allowed to send the SR.
  • SR enable indication is separately configured for each serving cell, and the SR enable indication is used to indicate whether a PUCCH on a certain serving cell or a certain serving cell can transmit an SR. In this way, you need to combine the two parts of the SR parameters.
  • the SR parameter includes at least one of the following: an sr-ConfigIndex, an SR enable indication, and a cell offset, where the SR enable indication is used to indicate whether a PUCCH on a serving cell or a serving cell can be sent.
  • the cell offset is used to calculate a cell where the SR transmission opportunity is located.
  • the SR sending module 42 specifically includes: a determining module 43 and a selecting sending module 44, where
  • the determining module 43 is configured to determine, when the SR needs to be sent, the multiple serving cells corresponding to the saved PUCCH configuration information, and determine, according to the SR configuration information, whether each PUCCH of the serving cell has an SR transmission opportunity according to the transmission time interval (TTI). If so, the notification selection sending module 44;
  • the selection sending module 44 is configured to select the serving cell to send the SR in the serving cell to which the PUCCH having the SR transmission opportunity belongs.
  • the selection sending module 44 is further configured to select a serving cell to send an SR in a serving cell to which the PUCCH having the SR transmission opportunity belongs according to a preset selection principle, where the selection principle includes at least one of the following principles:
  • the serving cell with the highest priority to send the SR may be a priority agreed in the protocol or a priority configured by the network side through the RRC message;
  • the serving cell is preferentially selected to transmit the SR.
  • the selection sending module 44 is further configured to preferentially determine whether a serving cell in each serving cell uses the PUCCH transmission of the PUCCH format 3 in the current TTI.
  • ACK/NACK information if yes, selecting the serving cell to send an SR; if not or if multiple serving cells simultaneously send ACK/NACK information in the PUCCH of the PUCCH format 3 in the current TTI, according to other principles
  • a selective serving cell sends an SR.
  • the determining module 43 is further configured to calculate, by using the SR configuration information on the network side, an SR sending occasion and/or a serving cell where the SR sending opportunity is located;
  • the constraint condition for calculating the SR transmission timing is:
  • the SR transmission timings on all serving cells are calculated by a set of SR parameters, and the SR transmission timings on different serving cells do not overlap;
  • the SR transmission timing is evenly distributed on the serving cell in which the PUCCH is configured and the SR transmission is allowed.
  • the determining module 43 is further configured to obtain, according to the sr-ConfigIndex I SR lookup table of the SR configuration information, the transmission period SR Periodicity of the SR on the serving cell, and the subframe offset N OFFSET, SR , according to the formula: The uplink subframe position that can be transmitted by the SR on each serving cell is separately calculated.
  • the formula for calculating the serving cell in which the SR transmission timing is located is:
  • n f is the system frame number
  • n s is the slot number
  • SR Periodicity is the SR transmission period
  • N OFFSET is the subframe offset
  • N cell is the number of serving cells configured with PUCCH and allowing SR to be sent.
  • the serving cell offset may be added, where the serving cell offset is configured by the network side, such as an eNB, such that the formula for calculating the serving cell in which the SR transmission opportunity is located is:
  • N celloffset is the serving cell offset.
  • the apparatus further includes a discarding module 45 configured to, after the determining module 43 determines that the PUCCH of the serving cell has an SR transmission opportunity, abandon sending the SR information in the current TTI according to at least one of the following factors:
  • the serving cell that currently has the SR transmission opportunity is performing the RACH procedure
  • the serving cell that currently has the SR transmission opportunity is in measurementgap;
  • the specified time may be configured by a protocol or by a base station by using an RRC message.
  • the serving cell where the SR transmission timing is after the specified time has a larger power head
  • the serving cell where the SR transmission timing is after the specified time is smaller in the relevant TTI transmission power
  • the SR transmission timing after the specified time occurs in the serving cell with higher priority
  • the serving cell After the specified time, the serving cell will transmit ACK/NACK information using the PUCCH of PUCCH format 3.
  • the present invention also provides a UE, which includes the above apparatus.
  • Step 1 The UE receives an RRC reconfiguration message from the eNB.
  • the RRC reconfiguration message configures three serving cells CELL A, CELL B, and CELL C for the UE, where CELL A is PCell, CELL B/C is SCell, CELL A PUCCH is configured in the A and the CELL B, and the RRC reconfiguration message carries the SR configuration information, where the SR configuration information is an SR parameter configured for the CELL A and the CELL B, and the UE saves the received PUCCH configuration information and the SR configuration information.
  • Step 2 When the UE determines that the SR needs to be sent, it determines whether the current TTI has a PUCCH of the serving cell and has an SR transmission opportunity in each TTI, where the SR transmission timing is calculated as follows:
  • the UE obtains the transmission period SR PERIODICITY of the SR on the serving cells CELL A and CELL B, and the subframe offset N OFFSET, SR according to the sr-ConfigIndex SR I SR table configured by the network for the serving cells CELL A and CELL B respectively. According to the formula: The uplink subframe positions on which the SR transmission can be performed on CELL A and CELL B are respectively calculated.
  • Step 3 When the UE determines that the current TTI cells CELL A and CELL B have SR transmission opportunities at the same time, select one serving cell from CELL A and CELL B to perform SR transmission according to a preset selection principle.
  • the selection principle includes at least one of the following principles:
  • the UE arbitrarily selects a serving cell to send the SR
  • the UE selects the serving cell with the largest power headroom to send the SR
  • the UE selects to send the SR in the serving cell with the smallest TTI transmission power
  • the UE sends the SR according to the pre-defined priority to select the serving cell with the highest priority;
  • the predefined priority may be the priority agreed in the protocol or the priority configured by the network side through the RRC message;
  • the UE alternately selects the serving cell to send the SR
  • the serving cell is preferentially selected to send the SR.
  • the UE preferentially determines whether the serving cell in the serving cell sends the ACK/NACK information in the PUCCH of the PUCCH format 3 in the current TTI, if If yes, the serving cell is selected to send the SR; if there is no or if multiple serving cells simultaneously send the ACK/NACK information in the PUCCH of the PUCCH format 3 in the current TTI, the serving cell is selected according to one of the other principles. SR.
  • the method further includes: after determining that the PUCCH of the serving cell has an SR transmission opportunity, the UE abandons sending the SR information in the current TTI according to at least one of the following factors:
  • the serving cell that currently has the SR transmission opportunity is performing the RACH procedure
  • the serving cell currently having the SR transmission opportunity is at a measurement interval (measurementgap);
  • the specified time may be configured by a protocol or by a base station by using an RRC message.
  • the serving cell where the SR transmission timing is after the specified time has a larger power head
  • the serving cell where the SR transmission timing is after the specified time is smaller in the relevant TTI transmission power
  • the SR transmission timing after the specified time occurs in the serving cell with high priority
  • the serving cell After the specified time, the serving cell will transmit ACK/NACK information using the PUCCH of PUCCH format 3.
  • Step 1 The UE receives an RRC reconfiguration message from the eNB, where the RRC reconfiguration message is The UE is configured with three service cells, CELL A, CELL B, and CELL C.
  • the CELL A is the PCell
  • the CELL B/C is the SCell
  • the CELL A and the CELL B are configured with the PUCCH
  • the reconfiguration message carries the SR configuration information.
  • the SR configuration information is a common SR parameter configured for CELL A and CELL B, and the UE saves the received PUCCH configuration information and SR configuration information.
  • Step 2 When the UE determines that the SR needs to be sent, it determines whether the current TTI has a PUCCH of the serving cell and has an SR transmission opportunity in each TTI, where the SR transmission timing is calculated as follows:
  • the UE obtains the SR transmission period SR Periodicity and the subframe offset N OFFSET, SR according to the common parameter sr-ConfigIndex SR I SR configured by the network for the serving cell CELL A and CELL, and according to the formula: Calculate the position of the uplink subframe on which the SR can be sent on CELL A and CELL B.
  • the Ncell is the serving cell where the SR transmission timing is located, and the Ncell is the number of serving cells configured with the PUCCH and allowed to send the SR. In this embodiment, the value is 2, and when i is 0, the CELL A is used to send the SR; i is 1 When using CELLB to send SR.
  • Step 1 The UE receives an RRC reconfiguration message from the eNB.
  • the RRC reconfiguration message configures three serving cells CELL A, CELL B, and CELL C for the UE, where CELL A is PCell, CELL B/C is SCell, CELL A PUCCH is configured in the A/B/C, and the RRC reconfiguration message carries the SR configuration information, where the SR configuration information includes a common SR parameter configured for the CELL A/B/C, and a service for the PUCCH and/or the PUCCH.
  • the SR configuration indication of the cell configuration is used to indicate whether the PUCCH and/or the serving cell can send the SR, and the UE saves the received PUCCH configuration information and the SR configuration information.
  • the eNB indicates that the SR is allowed to be sent on the CELL A/B in the RRC reconfiguration message.
  • Step 2 When the UE determines that the SR needs to be sent, it determines whether the current TTI has a PUCCH of the serving cell and has an SR transmission opportunity in each TTI, where the SR transmission timing is calculated as follows:
  • the UE obtains the SR transmission period SR Periodicity and the subframe offset N OFFSET, SR according to the common parameter sr-ConfigIndexSR I SR configured by the network side for the serving cell CELL A/B, and according to the formula: Calculate the position of the uplink subframe that can be used for SR transmission, and use the formula:
  • the Ncell is the serving cell where the SR transmission timing is located, and the Ncell is the number of serving cells configured with the PUCCH and allowed to send the SR.
  • the value is 2, and when i is 0, the CELL A is used to send the SR; i is 1 When using CELL B, send SR.
  • the serving cell offset may be added, where the serving cell offset is configured by the network side, such as an eNB, such that the formula for calculating the serving cell in which the SR transmission opportunity is located is:
  • N celloffset is the serving cell offset.
  • SR transmission when multiple carriers are simultaneously configured in a PUCCH can be implemented in a carrier aggregation scenario.
  • the embodiment of the present invention further describes a storage medium in which a computer program is stored, and the computer program is configured to execute a method for transmitting a scheduling request SR under carrier aggregation according to the foregoing embodiments.
  • the present invention receives and stores the PUCCH configuration information and the SR configuration information on the multiple serving cells through the RRC message, and determines that the SR needs to be sent, and selects the serving cell to send the SR among the multiple serving cells corresponding to the saved PUCCH configuration information according to the SR configuration information.
  • the SR transmission problem when multiple carriers are simultaneously configured with the PUCCH in the carrier aggregation scenario is solved.

Abstract

本发明公开了一种载波聚合下调度请求(SR)的发送方法，用户设备(UE)通过无线资源控制(RRC)消息接收并保存多个服务小区上的物理上行控制信道(PUCCH)配置信息和SR配置信息，确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR；本发明同时还公开了一种载波聚合下调度请求的发送装置和终端、存储介质。

Description

载波聚合下调度请求的发送方法、装置和终端、存储介质 技术领域
本发明涉及移动通信技术，尤其涉及一种载波聚合下调度请求的发送方法、装置和终端、存储介质。
背景技术
随着通信技术的不断发展、智能终端的普及和大量网络应用的出现，以数据业务为主的移动宽带通信成为未来移动通信发展的趋势。从应对未来数据业务高速发展的角度，特别是应对峰值速率需求和带宽需求的角度，需要通信系统提供更大的通信带宽，例如，为了满足长期演进(LTE，Long Term Evolution)下行峰速1Gbps，上行峰速500Mbps的要求，需要提供最大100MHz的传输带宽，但由于这么大带宽的连续频谱的稀缺，3GPP在R10阶段提出了载波聚合(CA，Carrier Aggregation)的解决方案，并在R11和R12阶段对载波聚合进一步增强。用于移动通信的频谱分散于800MHz、900MHz、1800MHz、2100MHz、2400MHz、2600MHz，通过载波聚合技术可以将这些分散的频谱聚合为大的通信带宽，增加频谱应用的灵活性，提高频谱利用效率。载波聚合技术是保证LTE能够满足峰值速率需求和带宽需求的核心技术。
对于3GPP R8/R9的终端只能在一个载波上接收和发射，也就是只有一个服务小区；3GPP R10的载波聚合终端可以在最多5个载波上同时接收和发送，也就是最多可以有5个服务小区，如图1所示，其中一个是主小区(PCell，Primary Cell)，其他4个为辅小区(SCell，Secondary Cells)，PCell是用户设备(UE)初始接入时的Cell，负责与UE之间的RRC通信；SCell是RRC重配置时添加的，用于提供额外的无线资源。在3GPP R10中规定， PCell具有上下行载波，而辅小区可以只有下行载波，但不能只有上行载波，并且物理上行控制信道(PUCCH，Physical uplink control channel)只在PCell上发送，PUCCH中传输的控制信息包括上行资源调度请求、下行数据的确认/非确认(ACK/NACK)反馈以及信道质量指示信息等。
随着具有载波聚合能力的UE不断增加，携带PUCCH的PCell的负载将显著增加，这可能导致系统性能和用户体验的下降；而且在3GPP R13中，LTE系统能支持的最大的可聚合的载波数可能上升到32个，例如，1个PCell载波，31个SCell载波，对于这么大数量的载波，如果所有32个小区上的控制信息都只能通过PCell上的PUCCH传输，那PCell将面临巨大的负荷，从而可能影响PCell的正常工作。因此，3GPP R13中提出SCell上也可以传输PUCCH的需求，其可能的结构如图2所示，SCell上传输的PUCCH为SPUCCH，从而可以在一定程度上降低PCell上PUCCH的负载，提升系统性能。如图2所示，发送PUCCH的SCell必须具有上行载波，因此同时具有上下行载波的SCell潜在的都可以配置PUCCH，例如，SCell 1、SCell 2和SCell 4。
调度请求(SR，Scheduling Request)用于进行新数据传输的UL-SCH资源的申请。当触发SR时，如果配置的PUCCH可以用来发送SR信息并且与测量间隔不冲突，则UE将通过PUCCH发送SR信息。SR的传输时机由高层配置，UE根据网络配置的参数sr-ConfigIndex SR配置索引ISR，查表得到SR传输周期SRPeriodicity，以及子帧偏移NOFFSET,SR，并根据公式：
Figure PCTCN2015096870-appb-000001
计算出可以进行SR传输的上行子帧位置。公式中nf为系统帧号，ns为时隙号。
表1：SR配置
SR配置序号ISR SR传输周期(ms)SRPeriodicity SR子帧偏移NOFFSET,SR
0–4 5 ISR
5–14 10 ISR-5
15–34 20 ISR-15
35–74 40 ISR-35
75–154 80 ISR-75
155–156 2 ISR-155
157 1 ISR-157
目前，UE在载波聚合场景下，还没有考虑过多个载波同时配置PUCCH时SR的发送问题。
发明内容
为解决现有存在的技术问题，本发明主要提供一种载波聚合下调度请求的发送方法、装置和终端、存储介质。
本发明的技术方案是这样实现的：
本发明提供一种载波聚合下SR的发送方法，该方法包括：
用户设备UE通过无线资源控制RRC消息接收并保存多个服务小区上的物理上行控制信道PUCCH配置信息和SR配置信息，确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR。
上述方案中，所述多个服务小区包括：PCell、SCell；
所述SR配置信息包括配置方式和SR参数。
上述方案中，所述配置方式包括以下方式中的一种：
A、为允许发送SR的服务小区独立配置SR参数；
B、配置一套公共的SR参数，所述SR参数对所有配置了PUCCH且允许通过PUCCH发送SR的服务小区生效；
C、为每个服务小区独立配置一部分SR参数，对所有服务小区配置公共的另一部分SR参数，所述另一部分SR参数对所有服务小区生效。
上述方案中，所述SR参数至少包含以下一种：SR配置索引sr-ConfigIndex、SR使能指示、小区偏移量。
上述方案中，所述确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR，包括：UE确定需要发送SR时，针对保存的PUCCH配置信息对应的多个服务小区，根据SR配置信息在每一个传输时间间隔TTI判断是否有服务小区的PUCCH拥有SR发送时机，如果有，则在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR。
上述方案中，所述在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR包括：按照选择原则在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR，所述选择原则包括以下至少一个原则：
a、UE任意选择一个服务小区发送SR；
b、UE选择拥有最大的功率余量的服务小区发送SR；
c、UE选择在当前TTI发送功率最小的服务小区发送SR；
d、UE根据优先级选择拥有最高优先级的服务小区发送SR；
e、UE轮流选择服务小区发送SR；
f、当服务小区中当前TTI有PUCCH格式format 3的PUCCH发送ACK/NACK信息时，优先选择所述服务小区发送SR。
上述方案中，当所述选择原则为包括原则f的多个原则的组合时，所述按照选择原则在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR包括：UE优先判断各服务小区中是否有服务小区在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，如果有，则选择所述服务小区发送SR；如果没有或如果同时有多个服务小区都在当前TTI采 用了PUCCH format 3的PUCCH发送ACK/NACK信息，则根据其他原则中的一种选择服务小区发送SR。
上述方案中，所述根据SR配置信息在每一个TTI判断是否有服务小区的PUCCH拥有SR发送时机包括：
UE使用网络侧的SR配置信息计算SR发送时机和/或SR发送时机位于的服务小区。
上述方案中，所述计算SR发送时机的约束条件为：
所有服务小区上的SR发送时机均由一套SR参数计算得出，且不同服务小区上的SR发送时机不重叠。
上述方案中，所述计算SR发送时机包括：UE根据SR配置信息的sr-ConfigIndex查表得到SR在服务小区上的传输周期SRPeriodicity，以及子帧偏移NOFFSET,SR，并根据公式：
Figure PCTCN2015096870-appb-000002
分别计算出各服务小区上允许进行SR发送的上行子帧位置。
上述方案中，所述计算SR发送时机位于的服务小区的公式为：
Figure PCTCN2015096870-appb-000003
其中，nf为系统帧号，ns为时隙号，SRPeriodicity为SR传输周期，NOFFSET,SR为子帧偏移，Ncell为配置了PUCCH且允许进行SR发送的服务小区个数，i为SR发送时机位于的服务小区序号。
上述方案中，所述计算SR发送时机位于的服务小区的公式为：
Figure PCTCN2015096870-appb-000004
其中，nf为系统帧号，ns为时隙号，SRPeriodicity为SR传输周期，NOFFSET,SR为子帧偏移，Ncell为配置了PUCCH且允许进行SR发送的服务小区个数，i为SR发送时机位于的服务小区序号，Ncelloffset为服务小区偏移量。
上述方案中，该方法还包括：UE在确定有服务小区的PUCCH拥有SR 发送时机后，根据以下至少一个因素，放弃在当前TTI发送SR信息：
(1)当前没有服务小区有足够的功率发送SR信息；
(2)当前拥有SR发送时机的服务小区正在进行随机接入信道RACH过程；
(3)当前拥有SR发送时机的服务小区处于测量间隔measurementgap；
(4)在指定时间后有更高优先级的SR发送时机。
上述方案中，所述在指定时间后有更高优先级的SR发送时机包括以下至少一种：
指定时间后的SR发送时机所在服务小区拥有更大的功率余量；
指定时间后的SR发送时机所在服务小区在相关TTI发送功率较小；
指定时间后的SR发送时机出现在拥有更高优先级的服务小区；
指定时间后有服务小区将使用PUCCH format 3的PUCCH发送ACK/NACK信息。
本发明提供一种载波聚合下调度请求的发送装置，该装置包括：接收和保存模块、SR发送模块；其中，
接收和保存模块，配置为通过RRC消息接收并保存多个服务小区上的PUCCH配置信息和SR配置信息；
SR发送模块，配置为确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR。
上述方案中，所述多个服务小区包括：PCell、SCell；
所述SR配置信息包括配置方式和SR参数。
上述方案中，所述配置方式包括以下方式中的一种：
A、为允许发送SR的服务小区独立配置SR参数；
B、配置一套公共的SR参数，所述SR参数对所有配置了PUCCH且允许通过PUCCH发送SR的服务小区生效；
C、为每个服务小区独立配置一部分SR参数，对所有服务小区配置公共的另一部分SR参数，所述另一部分SR参数对所有服务小区生效。
上述方案中，所述SR参数至少包含以下一种：sr-ConfigIndex、SR使能指示、小区偏移量。
上述方案中，所述SR发送模块具体包括：判断模块和选择发送模块，其中，
判断模块，配置为确定需要发送SR时，针对保存的PUCCH配置信息对应的多个服务小区，根据SR配置信息在每一个TTI判断是否有服务小区的PUCCH拥有SR发送时机，如果有，通知选择发送模块；
选择发送模块，配置为在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR。
上述方案中，所述选择发送模块，还配置为按照选择原则在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR，所述选择原则包括以下至少一个原则：
a、任意选择一个服务小区发送SR；
b、选择拥有最大的功率余量的服务小区发送SR；
c、选择在当前TTI发送功率最小的服务小区发送SR；
d、根据优先级选择拥有最高优先级的服务小区发送SR；
e、轮流选择服务小区发送SR；
f、当服务小区中当前TTI有PUCCH format 3的PUCCH发送ACK/NACK信息时，优先选择所述服务小区发送SR。
上述方案中，当所述选择原则为包括原则f的多个原则的组合时，所述选择发送模块，还配置为优先判断各服务小区中是否有服务小区在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，如果有，则选择所述服务小区发送SR；如果没有或如果同时有多个服务小区都在当前 TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，则根据其他原则中的一种选择服务小区发送SR。
上述方案中，所述判断模块，还配置为使用网络侧的SR配置信息计算SR发送时机和/或SR发送时机位于的服务小区。
上述方案中，所述计算SR发送时机的约束条件为：
所有服务小区上的SR发送时机均由一套SR参数计算得出，且不同服务小区上的SR发送时机不重叠。
上述方案中，所述判断模块，还配置为根据SR配置信息的sr-ConfigIndex查表得到SR在服务小区上的传输周期SRPeriodicity，以及子帧偏移NOFFSET,SR，并根据公式：
Figure PCTCN2015096870-appb-000005
分别计算出各服务小区上允许进行SR发送的上行子帧位置。
上述方案中，所述计算SR发送时机位于的服务小区的公式为：
Figure PCTCN2015096870-appb-000006
其中，nf为系统帧号，ns为时隙号，SRPeriodicity为SR传输周期，NOFFSET,SR为子帧偏移，Ncell为配置了PUCCH且允许进行SR发送的服务小区个数，i为SR发送时机位于的服务小区序号。
上述方案中，所述计算SR发送时机位于的服务小区的公式为：
Figure PCTCN2015096870-appb-000007
其中，nf为系统帧号，ns为时隙号，SRPeriodicity为SR传输周期，NOFFSET,SR为子帧偏移，Ncell为配置了PUCCH且允许进行SR发送的服务小区个数，i为SR发送时机位于的服务小区序号，Ncelloffset为服务小区偏移量。
上述方案中，该装置还包括放弃模块，配置为在判断模块确定有服务小区的PUCCH拥有SR发送时机后，根据以下至少一个因素，放弃在当前TTI发送SR信息：
(1)当前没有服务小区有足够的功率发送SR信息；
(2)当前拥有SR发送时机的服务小区正在进行RACH过程；
(3)当前拥有SR发送时机的服务小区处于measurementgap；
(4)在指定时间后有更高优先级的SR发送时机。
上述方案中，所述在指定时间后有更高优先级的SR发送时机包括以下至少一种：
指定时间后的SR发送时机所在服务小区拥有更大的功率余量；
指定时间后的SR发送时机所在服务小区在相关TTI发送功率较小；
指定时间后的SR发送时机出现在拥有更高优先级的服务小区；
指定时间后有服务小区将使用PUCCH format 3的PUCCH发送ACK/NACK信息。
本发明提供一种UE，该UE包括所述的载波聚合下调度请求的发送装置。
本发明提供一种存储介质，所述存储介质中存储有计算机程序，所述计算机程序配置为执行所述的载波聚合下调度请求SR的发送方法。
本发明提供了一种载波聚合下调度请求的发送方法、装置和终端，UE通过RRC消息接收并保存多个服务小区上的PUCCH配置信息和SR配置信息，确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR；如此，能够解决在载波聚合场景下，多个载波同时配置PUCCH时的SR发送问题。
附图说明
图1为载波聚合终端只在主小区发送PUCCH的示意图；
图2为载波聚合终端可以在辅小区发送PUCCH的示意图；
图3为本发明实施例提供的载波聚合下调度请求的发送方法的流程示意图；
图4为本发明实施例提供的载波聚合下调度请求的发送装置的结构示意图。
具体实施方式
本发明实施例中，UE通过RRC消息接收并保存多个服务小区上的PUCCH配置信息和SR配置信息，确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR。
下面通过附图及具体实施例对本发明做进一步的详细说明。
本发明实施例实现一种载波聚合下调度请求的发送方法，如图3所示，该方法包括以下几个步骤：
步骤301：UE通过RRC消息接收并保存多个服务小区上的PUCCH配置信息和SR配置信息；
其中，所述多个服务小区包括：PCell、SCell；所述SR配置信息包括配置方式和SR参数，其中，所述配置方式可以是以下方式中的一种：
A、为允许发送SR的服务小区独立配置SR参数；
B、配置一套公共的SR参数，所述SR参数对所有配置了PUCCH且允许通过PUCCH发送SR的服务小区生效；
C、为每个服务小区独立配置一部分SR参数，对所有服务小区配置公共的另一部分SR参数，所述另一部分SR参数对所有服务小区生效，例如，公共配置一个SR配置索引(sr-ConfigIndex)，然后为每个服务小区独立配置SR使能指示，所述SR使能指示用于指示某个服务小区或某个服务小区上的PUCCH是否可以发送SR。在这种方式下，UE需要将两部分SR参数合并后使用。
所述SR参数至少包含以下一种：sr-ConfigIndex、SR使能指示、小区偏移量，其中，所述SR使能指示用于指示某个服务小区或某个服务小区上的PUCCH是否可以发送SR，所述小区偏移量用于计算SR发送机会所在 的小区。
步骤302：UE确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR；
具体的，UE确定需要发送SR时，针对保存的PUCCH配置信息对应的多个服务小区，根据SR配置信息在每一个传输时间间隔(TTI)判断是否有服务小区的PUCCH拥有SR发送时机，如果有，则在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR。
其中，所述在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR可以是：按照预先设置的选择原则在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR，所述选择原则包括以下至少一个原则：
a、UE任意选择一个服务小区发送SR；
b、UE选择拥有最大的功率余量的服务小区发送SR；
c、UE选择在当前TTI发送功率最小的服务小区发送SR；
d、UE根据预先定义的优先级选择拥有最高优先级的服务小区发送SR；所述预先定义的优先级可以是在协议中约定的优先级或者由网络侧通过RRC消息配置的优先级；
e、UE轮流选择服务小区发送SR；
f、当服务小区中当前TTI有PUCCH格式3(format 3)的PUCCH发送ACK/NACK信息时，优先选择所述服务小区发送SR。
其中，当所述选择原则为包括原则f的多个原则的组合时，UE优先判断各服务小区中是否有服务小区在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，如果有，则选择所述服务小区发送SR；如果没有或如果同时有多个服务小区都在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，则根据其他原则中的一种选择服务小区发 送SR。
本步骤中，所述根据SR配置信息在每一个TTI判断是否有服务小区的PUCCH拥有SR发送时机包括：
UE使用网络侧的SR配置信息计算SR发送时机和/或SR发送时机位于的服务小区；
其中，所述计算SR发送时机的约束条件为：
所有服务小区上的SR发送时机均由一套SR参数计算得出，且不同服务小区上的SR发送时机不重叠；
这样，所述SR发送时机平均分布在配置了PUCCH且允许进行SR发送的服务小区上。
所述计算SR发送时机包括：UE根据SR配置信息的sr-ConfigIndex ISR查表得到SR在服务小区上的传输周期SRPeriodicity，以及子帧偏移NOFFSET,SR，并根据公式：
Figure PCTCN2015096870-appb-000008
分别计算出各服务小区上可以进行SR发送的上行子帧位置。
其中，所述计算SR发送时机位于的服务小区的公式为：
Figure PCTCN2015096870-appb-000009
其中，nf为系统帧号，ns为时隙号，SRPeriodicity为SR传输周期，NOFFSET,SR为子帧偏移，Ncell为配置了PUCCH且允许进行SR发送的服务小区个数，i为SR发送时机位于的服务小区序号，其中，i＝0表示PCell，i＝1表示根据SCell索引标识(Index ID)由低到高排序后第一个配置了PUCCH且允许进行SR发送的服务小区，i＝2表示第二个，以此类推。
在计算SR时机所处服务小区时，可以加入服务小区偏移量，所述服务小区偏移量由网络侧如eNB配置，这样，所述计算SR发送时机位于的服务小区的公式为：
Figure PCTCN2015096870-appb-000010
其中，Ncelloffset为服务小区偏移量。
该方法还包括：UE在确定有服务小区的PUCCH拥有SR发送时机后，根据以下至少一个因素，放弃在当前TTI发送SR信息：
(1)当前没有服务小区有足够的功率发送SR信息；
(2)当前拥有SR发送时机的服务小区正在进行随机接入信道(RACH)过程；
(3)当前拥有SR发送时机的服务小区处于测量间隔(measurementgap)；
(4)在指定时间后有更高优先级的SR发送时机。
其中，所述指定时间可由协议约定或由基站通过RRC消息进行配置。
所述在指定时间后有更高优先级的SR发送时机包括以下至少一种：
指定时间后的SR发送时机所在服务小区拥有更大的功率余量；
指定时间后的SR发送时机所在服务小区在相关TTI发送功率较小；
指定时间后的SR发送时机出现在拥有更高优先级的服务小区；
指定时间后有服务小区将使用PUCCH format 3的PUCCH发送ACK/NACK信息。
为了实现上述方法，本发明还提供一种载波聚合下调度请求的发送装置，如图4所示，该装置包括：接收和保存模块41、SR发送模块42；其中，
接收和保存模块41，可以由UE的存储器实现，配置为通过RRC消息接收并保存多个服务小区上的PUCCH配置信息和SR配置信息；
SR发送模块42，可以由UE的处理器结合存储器实现，配置为确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR；
其中，所述多个服务小区包括：PCell、SCell；所述SR配置信息包括 配置方式和SR参数，其中，所述配置方式可以是以下方式中的一种：
A、为允许发送SR的服务小区独立配置SR参数；
B、配置一套公共的SR参数，所述SR参数对所有配置了PUCCH且允许通过PUCCH发送SR的服务小区生效；
C、为每个服务小区独立配置一部分SR参数，对所有服务小区配置公共的另一部分SR参数，所述另一部分SR参数对所有服务小区生效，例如，公共配置一个SR配置索引(sr-ConfigIndex)，然后为每个服务小区独立配置SR使能指示，所述SR使能指示用于指示某个服务小区或某个服务小区上的PUCCH是否可以发送SR。在这种方式下，需要将两部分SR参数合并后使用。
所述SR参数至少包含以下一种：sr-ConfigIndex、SR使能指示、小区偏移量，其中，所述SR使能指示用于指示某个服务小区或某个服务小区上的PUCCH是否可以发送SR，所述小区偏移量用于计算SR发送机会所在的小区。
所述SR发送模块42具体包括：判断模块43和选择发送模块44，其中，
判断模块43，配置为确定需要发送SR时，针对保存的PUCCH配置信息对应的多个服务小区，根据SR配置信息在每一个传输时间间隔(TTI)判断是否有服务小区的PUCCH拥有SR发送时机，如果有，通知选择发送模块44；
选择发送模块44，配置为在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR。
其中，所述选择发送模块44，还配置为按照预先设置的选择原则在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR，所述选择原则包括以下至少一个原则：
a、任意选择一个服务小区发送SR；
b、选择拥有最大的功率余量的服务小区发送SR；
c、选择在当前TTI发送功率最小的服务小区发送SR；
d、根据预先定义的优先级选择拥有最高优先级的服务小区发送SR；所述预先定义的优先级可以是在协议中约定的优先级或者由网络侧通过RRC消息配置的优先级；
e、轮流选择服务小区发送SR；
f、当服务小区中当前TTI有PUCCH格式3(format 3)的PUCCH发送ACK/NACK信息时，优先选择所述服务小区发送SR。
其中，当所述选择原则为包括原则f的多个原则的组合时，所述选择发送模块44，还配置为优先判断各服务小区中是否有服务小区在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，如果有，则选择所述服务小区发送SR；如果没有或如果同时有多个服务小区都在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，则根据其他原则中的一种选择服务小区发送SR。
所述判断模块43，还配置为使用网络侧的SR配置信息计算SR发送时机和/或SR发送时机位于的服务小区；
其中，所述计算SR发送时机的约束条件为：
所有服务小区上的SR发送时机均由一套SR参数计算得出，且不同服务小区上的SR发送时机不重叠；
这样，所述SR发送时机平均分布在配置了PUCCH且允许进行SR发送的服务小区上。
所述判断模块43，还配置为根据SR配置信息的sr-ConfigIndex ISR查表得到SR在服务小区上的传输周期SRPeriodicity，以及子帧偏移NOFFSET,SR，并根据公式：
Figure PCTCN2015096870-appb-000011
分别计算出各服务小区 上可以进行SR发送的上行子帧位置。
其中，所述计算SR发送时机位于的服务小区的公式为：
Figure PCTCN2015096870-appb-000012
其中，nf为系统帧号，ns为时隙号，SRPeriodicity为SR传输周期，NOFFSET,SR为子帧偏移，Ncell为配置了PUCCH且允许进行SR发送的服务小区个数，i为SR发送时机位于的服务小区序号，其中，i＝0表示PCell，i＝1表示根据SCell索引标识(Index ID)由低到高排序后第一个配置了PUCCH且允许进行SR发送的服务小区，i＝2表示第二个，以此类推。
在计算SR时机所处服务小区时，可以加入服务小区偏移量，所述服务小区偏移量由网络侧如eNB配置，这样，所述计算SR发送时机位于的服务小区的公式为：
Figure PCTCN2015096870-appb-000013
其中，Ncelloffset为服务小区偏移量。
该装置还包括放弃模块45，配置为在判断模块43确定有服务小区的PUCCH拥有SR发送时机后，根据以下至少一个因素，放弃在当前TTI发送SR信息：
(1)当前没有服务小区有足够的功率发送SR信息；
(2)当前拥有SR发送时机的服务小区正在进行RACH过程；
(3)当前拥有SR发送时机的服务小区处于measurementgap；
(4)在指定时间后有更高优先级的SR发送时机。
其中，所述指定时间可由协议约定或由基站通过RRC消息进行配置。
所述在指定时间后有更高优先级的SR发送时机包括以下至少一种：
指定时间后的SR发送时机所在服务小区拥有更大的功率余量；
指定时间后的SR发送时机所在服务小区在相关TTI发送功率较小；
指定时间后的SR发送时机出现在拥有更高优先级的服务小区；
指定时间后有服务小区将使用PUCCH format 3的PUCCH发送ACK/NACK信息。
基于上述装置，本发明还提供一种UE，该UE包括上述装置。
下面通过具体的场景对本发明的方法进行详细描述。
实施例1
步骤1，UE接收来自eNB的RRC重配置消息，RRC重配置消息中为UE配置了3个服务小区CELL A、CELL B和CELL C，其中，CELL A是PCell，CELL B/C是SCell，CELL A和CELL B中配置了PUCCH，且RRC重配置消息中携带SR配置信息，所述SR配置信息为给CELL A和CELL B分别配置的SR参数，UE保存接收到的PUCCH配置信息和SR配置信息。
步骤2，UE确定需要发送SR时，在每一个TTI判断当前TTI是否有服务小区的PUCCH拥有SR发送时机，其中的SR发送时机计算方法如下：
UE根据网络为服务小区CELL A和CELL B分别配置的sr-ConfigIndex SR ISR查表得到SR在服务小区CELL A和CELL B上的传输周期SRPERIODICITY，以及子帧偏移NOFFSET,SR，并根据公式：
Figure PCTCN2015096870-appb-000014
分别计算出CELL A和CELL B上可以进行SR发送的上行子帧位置。
步骤3，当UE判断在当前TTI小区CELL A和CELL B同时具有SR发送时机时，根据预先设置的选择原则从CELL A和CELL B中选择一个服务小区进行SR发送。其中，所述选择原则包括以下至少一个原则：
a、UE任意选择一个服务小区发送SR；
b、UE选择拥有最大的功率余量的服务小区发送SR；
c、UE选择在当前TTI发送功率最小的服务小区发送SR；
d、UE根据预先定义的优先级选择拥有最高优先级的服务小区发送SR；所述预先定义的优先级可以是在协议中约定的优先级或者由网络侧通过RRC消息配置的优先级；
e、UE轮流选择服务小区发送SR；
f、当服务小区中当前TTI有PUCCH format 3的PUCCH发送ACK/NACK信息时，优先选择所述服务小区发送SR。
其中，步骤3中当所述选择原则为包括原则f的多个原则的组合时，UE优先判断各服务小区中是否有服务小区在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，如果有，则选择所述服务小区发送SR；如果没有或如果同时有多个服务小区都在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，则根据其他原则中的一种选择服务小区发送SR。
其中，该方法还包括：UE在确定有服务小区的PUCCH拥有SR发送时机后，根据以下至少一个因素，放弃在当前TTI发送SR信息：
(1)当前没有服务小区有足够的功率发送SR信息；
(2)当前拥有SR发送时机的服务小区正在进行RACH过程；
(3)当前拥有SR发送时机的服务小区处于测量间隔(measurementgap)；
(4)在指定时间后有更高优先级的SR发送时机。
其中，所述指定时间可由协议约定或由基站通过RRC消息进行配置。
所述在指定时间后有更高优先级的SR发送时机包括以下至少一种：
指定时间后的SR发送时机所在服务小区拥有更大的功率余量；
指定时间后的SR发送时机所在服务小区在相关TTI发送功率较小；
指定时间后的SR发送时机出现在拥有高优先级的服务小区；
指定时间后有服务小区将使用PUCCH format 3的PUCCH发送ACK/NACK信息。
实施例2
步骤1，UE接收来自eNB的RRC重配置消息，RRC重配置消息中为 UE配置了3个服务小区CELL A、CELL B和CELL C，其中，CELL A是PCell，CELL B/C是SCell，CELL A和CELL B中配置了PUCCH，且重配置消息中携带SR配置信息，所述SR配置信息为给CELL A和CELL B配置的公共SR参数，UE保存接收到的PUCCH配置信息及SR配置信息。
步骤2，UE确定需要发送SR时，在每一个TTI判断当前TTI是否有服务小区的PUCCH拥有SR发送时机，其中的SR发送时机计算方法如下：
UE根据网络为服务小区CELL A和CELL配置的公共参数sr-ConfigIndex SR ISR查表得到SR的传输周期SRPeriodicity，以及子帧偏移NOFFSET,SR，并根据公式：
Figure PCTCN2015096870-appb-000015
分别计算出CELL A和CELL B上可以进行SR发送的上行子帧位置；同时，利用公式：
Figure PCTCN2015096870-appb-000016
计算出所述SR发送时机位于的服务小区，Ncell为配置了PUCCH且允许发送SR的服务小区个数，在本实施例中取值为2，i为0时选用CELL A发送SR；i为1时选用CELLB发送SR。
实施例3
步骤1，UE接收来自eNB的RRC重配置消息，RRC重配置消息中为UE配置了3个服务小区CELL A、CELL B和CELL C，其中，CELL A是PCell，CELL B/C是SCell，CELL A/B/C中均配置了PUCCH，RRC重配置消息中携带SR配置信息，所述SR配置信息包括给CELL A/B/C配置的公共SR参数，以及为PUCCH和/或拥有PUCCH的服务小区配置的SR使能指示，用于指示PUCCH和/或该服务小区是否可以发送SR，UE保存接收到的PUCCH配置信息及SR配置信息。在本实施例中，eNB在RRC重配置消息中指示CELL A/B上允许发送SR。
步骤2，UE确定需要发送SR时，在每一个TTI判断当前TTI是否有服务小区的PUCCH拥有SR发送时机，其中的SR发送时机计算方法如下：
UE根据网络侧为服务小区CELL A/B配置的公共参数sr-ConfigIndexSR ISR查表得到SR的传输周期SRPeriodicity，以及子帧偏移NOFFSET,SR，并根据公式：
Figure PCTCN2015096870-appb-000017
分别计算出可以进行SR传输的上行子帧位置，同时，利用公式：
Figure PCTCN2015096870-appb-000018
计算出所述SR发送时机位于的服务小区，Ncell为配置了PUCCH且允许发送SR的服务小区个数，在本实施例中取值为2，i为0时选用CELL A发送SR；i为1时选用CELL B发送SR。
其中，在计算SR时机所处服务小区时，可以加入服务小区偏移量，所述服务小区偏移量由网络侧如eNB配置，这样，所述计算SR发送时机位于的服务小区的公式为：
Figure PCTCN2015096870-appb-000019
其中，Ncelloffset为服务小区偏移量。
综合本发明的各实施例，能够在载波聚合场景下，实现多个载波同时配置PUCCH时的SR发送。
本发明实施例还记载了一种存储介质，所述存储介质中存储有计算机程序，所述计算机程序配置为执行前述各实施例的载波聚合下调度请求SR的发送方法。
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作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。
工业实用性
本发明通过RRC消息接收并保存多个服务小区上的PUCCH配置信息和SR配置信息，确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR；解决了在载波聚合场景下，多个载波同时配置PUCCH时的SR发送问题。

Claims (30)

  1. 一种载波聚合下调度请求SR的发送方法，该方法包括：
    用户设备UE通过无线资源控制RRC消息接收并保存多个服务小区上的物理上行控制信道PUCCH配置信息和SR配置信息，确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR。
  2. 根据权利要求1所述的发送方法，其中，所述多个服务小区包括：主小区PCell、辅小区SCell；
    所述SR配置信息包括配置方式和SR参数。
  3. 根据权利要求2所述的发送方法，其中，所述配置方式包括以下方式中的一种：
    A、为允许发送SR的服务小区独立配置SR参数；
    B、配置一套公共的SR参数，所述SR参数对所有配置了PUCCH且允许通过PUCCH发送SR的服务小区生效；
    C、为每个服务小区独立配置一部分SR参数，对所有服务小区配置公共的另一部分SR参数，所述另一部分SR参数对所有服务小区生效。
  4. 根据权利要求2所述的发送方法，其中，所述SR参数至少包含以下一种：SR配置索引sr-ConfigIndex、SR使能指示、小区偏移量。
  5. 根据权利要求1所述的发送方法，其中，所述确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR，包括：UE确定需要发送SR时，针对保存的PUCCH配置信息对应的多个服务小区，根据SR配置信息在每一个传输时间间隔TTI判断是否有服务小区的PUCCH拥有SR发送时机，如果有，则在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR。
  6. 根据权利要求5所述的发送方法，其中，所述在拥有SR发送时机 的PUCCH所属服务小区中选择服务小区发送SR包括：按照选择原则在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR，所述选择原则包括以下至少一个原则：
    a、UE任意选择一个服务小区发送SR；
    b、UE选择拥有最大的功率余量的服务小区发送SR；
    c、UE选择在当前TTI发送功率最小的服务小区发送SR；
    d、UE根据优先级选择拥有最高优先级的服务小区发送SR；
    e、UE轮流选择服务小区发送SR；
    f、当服务小区中当前TTI有PUCCH格式format 3的PUCCH发送ACK/NACK信息时，优先选择所述服务小区发送SR。
  7. 根据权利要求6所述的发送方法，其中，当所述选择原则为包括原则f的多个原则的组合时，所述按照选择原则在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR包括：UE优先判断各服务小区中是否有服务小区在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，如果有，则选择所述服务小区发送SR；如果没有或如果同时有多个服务小区都在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，则根据其他原则中的一种选择服务小区发送SR。
  8. 根据权利要求1所述的发送方法，其中，所述根据SR配置信息在每一个TTI判断是否有服务小区的PUCCH拥有SR发送时机包括：
    UE使用网络侧的SR配置信息计算SR发送时机和/或SR发送时机位于的服务小区。
  9. 根据权利要求8所述的发送方法，其中，所述计算SR发送时机的约束条件为：
    所有服务小区上的SR发送时机均由一套SR参数计算得出，且不同服务小区上的SR发送时机不重叠。
  10. 根据权利要求9所述的发送方法，其中，所述计算SR发送时机包括：UE根据SR配置信息的sr-ConfigIndex查表得到SR在服务小区上的传输周期SRPeriodicity，以及子帧偏移NOFFSET,SR，并根据公式：
    Figure PCTCN2015096870-appb-100001
    分别计算出各服务小区上允许进行SR发送的上行子帧位置。
  11. 根据权利要求8至10任一项所述的发送方法，其中，所述计算SR发送时机位于的服务小区的公式为：
    Figure PCTCN2015096870-appb-100002
    其中，nf为系统帧号，ns为时隙号，SRPeriodicity为SR传输周期，NOFFSET,SR为子帧偏移，Ncell为配置了PUCCH且允许进行SR发送的服务小区个数，i为SR发送时机位于的服务小区序号。
  12. 根据权利要求8至10任一项所述的发送方法，其中，所述计算SR发送时机位于的服务小区的公式为：
    Figure PCTCN2015096870-appb-100003
    其中，nf为系统帧号，ns为时隙号，SRPeriodicity为SR传输周期，NOFFSET,SR为子帧偏移，Ncell为配置了PUCCH且允许进行SR发送的服务小区个数，i为SR发送时机位于的服务小区序号，Ncelloffset为服务小区偏移量。
  13. 根据权利要求1所述的发送方法，其中，该方法还包括：UE在确定有服务小区的PUCCH拥有SR发送时机后，根据以下至少一个因素，放弃在当前TTI发送SR信息：
    (1)当前没有服务小区有足够的功率发送SR信息；
    (2)当前拥有SR发送时机的服务小区正在进行随机接入信道RACH过程；
    (3)当前拥有SR发送时机的服务小区处于测量间隔measurementgap；
    (4)在指定时间后有更高优先级的SR发送时机。
  14. 根据权利要求13所述的发送方法，其中，所述在指定时间后有更高优先级的SR发送时机包括以下至少一种：
    指定时间后的SR发送时机所在服务小区拥有更大的功率余量；
    指定时间后的SR发送时机所在服务小区在相关TTI发送功率较小；
    指定时间后的SR发送时机出现在拥有更高优先级的服务小区；
    指定时间后有服务小区将使用PUCCH format 3的PUCCH发送ACK/NACK信息。
  15. 一种载波聚合下调度请求的发送装置，该装置包括：接收和保存模块、SR发送模块；其中，
    接收和保存模块，配置为通过RRC消息接收并保存多个服务小区上的PUCCH配置信息和SR配置信息；
    SR发送模块，配置为确定需要发送SR时，根据SR配置信息在保存的PUCCH配置信息对应的多个服务小区中选择服务小区发送SR。
  16. 根据权利要求15所述的发送装置，其中，所述多个服务小区包括：PCell、SCell；
    所述SR配置信息包括配置方式和SR参数。
  17. 根据权利要求16所述的发送装置，其中，所述配置方式包括以下方式中的一种：
    A、为允许发送SR的服务小区独立配置SR参数；
    B、配置一套公共的SR参数，所述SR参数对所有配置了PUCCH且允许通过PUCCH发送SR的服务小区生效；
    C、为每个服务小区独立配置一部分SR参数，对所有服务小区配置公共的另一部分SR参数，所述另一部分SR参数对所有服务小区生效。
  18. 根据权利要求16所述的发送装置，其中，所述SR参数至少包含 以下一种：sr-ConfigIndex、SR使能指示、小区偏移量。
  19. 根据权利要求15所述的发送装置，其中，所述SR发送模块具体包括：判断模块和选择发送模块，其中，
    判断模块，配置为确定需要发送SR时，针对保存的PUCCH配置信息对应的多个服务小区，根据SR配置信息在每一个TTI判断是否有服务小区的PUCCH拥有SR发送时机，如果有，通知选择发送模块；
    选择发送模块，配置为在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR。
  20. 根据权利要求19所述的发送装置，其中，所述选择发送模块，还配置为按照选择原则在拥有SR发送时机的PUCCH所属服务小区中选择服务小区发送SR，所述选择原则包括以下至少一个原则：
    a、任意选择一个服务小区发送SR；
    b、选择拥有最大的功率余量的服务小区发送SR；
    c、选择在当前TTI发送功率最小的服务小区发送SR；
    d、根据优先级选择拥有最高优先级的服务小区发送SR；
    e、轮流选择服务小区发送SR；
    f、当服务小区中当前TTI有PUCCH format 3的PUCCH发送ACK/NACK信息时，优先选择所述服务小区发送SR。
  21. 根据权利要求20所述的发送装置，其中，当所述选择原则为包括原则f的多个原则的组合时，所述选择发送模块，还配置为优先判断各服务小区中是否有服务小区在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，如果有，则选择所述服务小区发送SR；如果没有或如果同时有多个服务小区都在当前TTI采用了PUCCH format 3的PUCCH发送ACK/NACK信息，则根据其他原则中的一种选择服务小区发送SR。
  22. 根据权利要求19所述的发送装置，其中，所述判断模块，还配置 为使用网络侧的SR配置信息计算SR发送时机和/或SR发送时机位于的服务小区。
  23. 根据权利要求22所述的发送装置，其中，所述计算SR发送时机的约束条件为：
    所有服务小区上的SR发送时机均由一套SR参数计算得出，且不同服务小区上的SR发送时机不重叠。
  24. 根据权利要求23所述的发送装置，其中，所述判断模块，还配置为根据SR配置信息的sr-ConfigIndex查表得到SR在服务小区上的传输周期SRPeriodicity，以及子帧偏移NOFFSET,SR，并根据公式：
    Figure PCTCN2015096870-appb-100004
    分别计算出各服务小区上允许进行SR发送的上行子帧位置。
  25. 根据权利要求22至24任一项所述的发送装置，其中，所述计算SR发送时机位于的服务小区的公式为：
    Figure PCTCN2015096870-appb-100005
    其中，nf为系统帧号，ns为时隙号，SRPeriodicity为SR传输周期，NOFFSET,SR为子帧偏移，Ncell为配置了PUCCH且允许进行SR发送的服务小区个数，i为SR发送时机位于的服务小区序号。
  26. 根据权利要求22至24任一项所述的发送装置，其中，所述计算SR发送时机位于的服务小区的公式为：
    Figure PCTCN2015096870-appb-100006
    其中，nf为系统帧号，ns为时隙号，SRPeriodicity为SR传输周期，NOFFSET,SR为子帧偏移，Ncell为配置了PUCCH且允许进行SR发送的服务小区个数，i为SR发送时机位于的服务小区序号，Ncelloffset为服务小区偏移量。
  27. 根据权利要求15所述的发送装置，其中，该装置还包括放弃模块， 配置为在判断模块确定有服务小区的PUCCH拥有SR发送时机后，根据以下至少一个因素，放弃在当前TTI发送SR信息：
    (1)当前没有服务小区有足够的功率发送SR信息；
    (2)当前拥有SR发送时机的服务小区正在进行RACH过程；
    (3)当前拥有SR发送时机的服务小区处于measurementgap；
    (4)在指定时间后有更高优先级的SR发送时机。
  28. 根据权利要求27所述的发送装置，其中，所述在指定时间后有更高优先级的SR发送时机包括以下至少一种：
    指定时间后的SR发送时机所在服务小区拥有更大的功率余量；
    指定时间后的SR发送时机所在服务小区在相关TTI发送功率较小；
    指定时间后的SR发送时机出现在拥有更高优先级的服务小区；
    指定时间后有服务小区将使用PUCCH format 3的PUCCH发送ACK/NACK信息。
  29. 一种UE，该UE包括权利要求15至28任一项所述的载波聚合下调度请求的发送装置。
  30. 一种存储介质，所述存储介质中存储有计算机程序，所述计算机程序配置为执行权利要求1至14任一项所述的载波聚合下调度请求SR的发送方法。
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