WO2018171678A1 - 周期性子带上报方法和装置 - Google Patents

周期性子带上报方法和装置 Download PDF

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Publication number
WO2018171678A1
WO2018171678A1 PCT/CN2018/080057 CN2018080057W WO2018171678A1 WO 2018171678 A1 WO2018171678 A1 WO 2018171678A1 CN 2018080057 W CN2018080057 W CN 2018080057W WO 2018171678 A1 WO2018171678 A1 WO 2018171678A1
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Prior art keywords
sub
band
reporting
current
reported
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PCT/CN2018/080057
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English (en)
French (fr)
Inventor
张德坤
姚春峰
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中兴通讯股份有限公司
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Publication of WO2018171678A1 publication Critical patent/WO2018171678A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication

Definitions

  • This document relates to, but is not limited to, the field of wireless communication technologies, and in particular to a periodic subband reporting method and apparatus.
  • the UE User Equipment
  • MCS Modulation and Coding Scheme
  • the aperiodic CSI reporting mode can implement CQI (Channel Quality Indicator) and PMI (Precoding Matrix Indicator) of all subbands.
  • CQI Channel Quality Indicator
  • PMI Precoding Matrix Indicator
  • the matrix indicates the reporting, but the aperiodic CSI reporting mode can be triggered in a specific scenario, and the periodic CSI reporting mode cannot implement complete sub-band reporting, so that the downlink channel quality cannot be completely fed back, resulting in system performance degradation.
  • an embodiment of the present invention provides a method and a device for reporting periodic sub-bands, which can implement periodic sub-band reporting of the UE by using base station-side power control, thereby improving the system by completely feeding back downlink channel quality to the base station through all sub-bands. performance.
  • a periodic subband reporting method comprising:
  • the power parameter corresponding to the current to-be-reported sub-band corresponding to each partial bandwidth is configured as a unique maximum power parameter.
  • a periodic sub-band reporting device comprising:
  • a sub-band reporting sequence determining module configured to determine a sub-band reporting mode of the partial bandwidth corresponding to the terminal according to the current service type corresponding to the received terminal, and determine a sub-band reporting sequence corresponding to the sub-band reporting mode
  • the current reporting sub-band obtaining module is configured to determine, according to the sub-band reporting order, a current to-be-reported sub-band corresponding to a bandwidth of each part of the current sub-band reporting period;
  • the sub-band power control module is configured to configure a power parameter corresponding to the current to-be-reported sub-band corresponding to each partial bandwidth as a unique maximum power parameter.
  • the method and the device for reporting the periodic sub-bands are obtained by the information received by the terminal, and the sub-band reporting mode of the partial bandwidth corresponding to the terminal is determined according to the service type of the terminal, and the sub-band reporting mode is obtained.
  • the base station determines the current to-be-reported sub-band corresponding to the bandwidth of each part of the current reporting period according to the sub-band reporting sequence, and configures a maximum power parameter for the current sub-band to be reported, and
  • the configuration power parameter corresponding to the other sub-bands of the current sub-band is smaller than the maximum power parameter, and the current power of the current sub-band reporting period corresponding to the current sub-band reporting period is the largest.
  • the power control of the base station enables the terminal to periodically report the sub-band information according to the sub-band reporting sequence, so that the downlink channel quality is fully fed back to the base station through all the sub-bands, which is beneficial for the base station to allocate appropriate frequency domain resources according to the feedback downlink channel quality. To the terminal, thereby improving system performance.
  • 1 is a flow chart of a method for reporting periodic subbands in an embodiment
  • 2A is a schematic diagram showing a periodic relationship corresponding to a periodic CSI reporting mode in an embodiment
  • 2B is a schematic diagram showing a periodic relationship corresponding to a periodic sub-band CSI reporting mode in an embodiment
  • 3 is a flow chart of a method for reporting periodic subbands in another embodiment
  • Figure 5 is a schematic diagram of the corresponding sequential sub-band reporting in Figure 4.
  • FIG. 6 is a flowchart of a method for periodically intersecting subband reporting in an embodiment
  • FIG. 7 is a schematic diagram of the corresponding cross subband reporting in FIG. 6;
  • FIG. 8 is a schematic structural diagram of a periodic sub-band reporting apparatus in an embodiment
  • FIG. 9 is a schematic structural diagram of a periodic sub-band reporting apparatus in another embodiment.
  • FIG. 10 is a schematic structural diagram of a periodic sub-band reporting apparatus in still another embodiment.
  • a periodic subband reporting method including the following:
  • Step S110 Determine a sub-band reporting mode of a partial bandwidth corresponding to the terminal according to the current service type corresponding to the received terminal, and determine a sub-band reporting sequence corresponding to the sub-band reporting mode.
  • the current service type of the terminal is mainly distinguished according to the Service Type in the Service Request message.
  • the Service Type mainly includes: signaling, data, paging response, and Broadcast Service.
  • the terminal here comprises a user equipment UE.
  • the number of Bandwidth Parts corresponding to the broadband can be determined according to the Wide Band allocated by the system to the terminal, and the corresponding sub-band (SubBand) can be determined according to the number of partial bandwidths. number.
  • the sub-band reporting is to report the sub-bands in the part of the bandwidth.
  • the sub-band reporting sequence affects the time-sensitiveness of the terminal service. Therefore, according to the timeliness of the current service type corresponding to the terminal, the sub-band of the partial bandwidth corresponding to the terminal is determined.
  • the sub-band reporting mode includes a sequential reporting mode and a cross-reporting mode, and different sub-band reporting modes correspond to different sub-band reporting sequences, and the sub-band reporting order refers to a sub-band reporting sequence corresponding to each partial bandwidth, and each partial bandwidth is used.
  • the sub-band reporting order is the same.
  • Step S120 Determine, according to the sub-band reporting sequence, the current to-be-reported sub-band corresponding to the bandwidth of each part of the current sub-band reporting period.
  • the terminal may periodically report the sub-band according to the sub-band reporting sequence, and the sub-band reporting period reports a corresponding sub-band period for all the bandwidths corresponding to the terminal bandwidth.
  • the base station determines, according to the sub-band reporting sequence, that each sub-band corresponding to the current reporting period is the current to-be-advertised sub-band.
  • Step S130 Configure a power parameter corresponding to the current to-be-reported sub-band corresponding to each partial bandwidth as a unique maximum power parameter.
  • the base station can perform power control on the sub-bands in each part of the bandwidth, and set the power configuration parameter corresponding to the current sub-band to be the maximum power parameter, and set the power configuration parameters corresponding to the current sub-band to be reported to be smaller than the maximum power parameter.
  • the power of the current to-be-advertised sub-band in the bandwidth of each part determined by the base station according to the sub-band reporting sequence is the largest.
  • the terminal may obtain the corresponding sub-band according to the preset sub-band reporting rule, and report the channel status information corresponding to the sub-band.
  • the preset sub-band reporting rule corresponding to the terminal is that the terminal sub-band reporting rule is set to the maximum throughput rule by using the algorithm and the related LTE protocol
  • the maximum throughput refers to the amount of data successfully transmitted in the system unit time, and the unit is bit per unit. second. Since the maximum throughput depends on the SINR (Signal to Interference plus Noise Ratio), and the SINR calculation is related to the power, the power is controlled by the power parameter. Therefore, when the terminal presets the subband reporting rule as the maximum throughput rule.
  • the subband acquired by the terminal is the subband corresponding to the current maximum power parameter. Therefore, when the base station configures the sub-band power parameter to maximize the power parameter corresponding to the current sub-band to be reported, the sub-band obtained by the terminal according to the preset maximum throughput rule is the current to-be-reported sub-band determined by the base station according to the sub-band reporting sequence. At the same time, the channel state information CSI corresponding to the subband is reported.
  • the channel state information CSI is the channel attribute of the communication link, which describes the weakening factor of the signal on each transmission path, that is, the value of each element in the channel gain matrix H, such as signal scattering (Scattering) ), fading (multipath fading or shadowing fading), power decay of distance and other information.
  • the channel attribute of the communication link which describes the weakening factor of the signal on each transmission path, that is, the value of each element in the channel gain matrix H, such as signal scattering (Scattering) ), fading (multipath fading or shadowing fading), power decay of distance and other information.
  • the sub-bands are reported as a periodic process, and the base station can obtain the sub-bands that need to be reported in the different sub-band reporting periods according to the sub-band reporting sequence, and enable the terminal to report the corresponding sub-bands by means of power control.
  • CSI thereby implementing periodic reporting of subbands.
  • the method for reporting the sub-band reporting by the terminal is to obtain the sub-band reporting mode of the partial bandwidth corresponding to the terminal according to the service type of the terminal, and obtain the sub-band reporting corresponding to the sub-band reporting mode.
  • the base station determines the current to-be-reported sub-band corresponding to the bandwidth of each part of the current reporting period according to the sub-band reporting order, and configures the maximum power parameter for the current sub-band to be reported, and in one
  • the configuration power parameters of the sub-bands except the sub-bands to be reported are smaller than the maximum power parameters, and the current sub-band sub-band power corresponding to the current sub-band reporting period is the largest.
  • the power control of the base station enables the terminal to periodically report the sub-band information according to the sub-band reporting sequence, so that the downlink channel quality is fully fed back to the base station through all the sub-bands, which is beneficial for the base station to allocate appropriate frequency domain resources according to the feedback downlink channel quality. To the terminal, thereby improving system performance.
  • the sub-band reporting mode is a sequential reporting mode; step S120 includes:
  • the Nth sub-band corresponding to each partial bandwidth is the current to-be-reported sub-band, where N is less than or equal to a maximum sub-band corresponding to the partial bandwidth.
  • the sub-band reporting mode may be selected as the sequential reporting mode, and the sub-band reporting order corresponding to the sequential reporting mode is reported in the order of the sub-bands in the partial bandwidth.
  • Subband When the current sub-band reporting period is the Nth sub-band reporting period, where N indicates that the sub-band corresponding to the N-th acquisition partial bandwidth is reported, in the order of reporting, the sub-band corresponding to the partial bandwidth acquired in the Nth is the first N subbands, the Nth subband is used as the current reporting subband, and configured as a maximum power parameter, where N is an integer and N is less than or equal to the corresponding number of subbands in the partial bandwidth.
  • the terminal frequency domain resource includes a part of the bandwidth, which is a first part bandwidth BP1, a second part bandwidth BP2, ..., a kth part bandwidth BPk, wherein each part of the bandwidth includes n sub-bands, respectively Subband SB1, second subband SB2, ..., nth subband SBn.
  • the first sub-band SB1 corresponding to SB1, ..., and BPk corresponding to SB1 and BP2 corresponding to BP1 is determined as each
  • the power parameters corresponding to the first sub-band SB1 of BP1, BP2, ..., and BPk are respectively set to 1 and the power parameters corresponding to the remaining sub-bands are 1/. 2, so that the terminal selects the first sub-band corresponding to each partial bandwidth in the first sub-band reporting period for reporting.
  • the second sub-band SB2 corresponding to BP1, BP2, ..., and BPk is respectively the current to-be-reported sub-band corresponding to each partial bandwidth, and respectively
  • the power configuration parameters corresponding to the second sub-band SB2 corresponding to BP1, BP2, ..., and BPk are set to 1, and the power parameters corresponding to the remaining sub-bands are configured to be 1/2, so that the terminal selects each period in the second sub-band reporting period.
  • the second sub-band corresponding to the partial bandwidth is reported.
  • the power parameter corresponding to the nth sub-band SBn corresponding to BP1, BP2, ..., and BPk is set to 1 in the n-th sub-band reporting period, and the power parameter corresponding to the remaining sub-bands is configured as 1/2.
  • the periodic reporting process of the sub-band is completed.
  • the sequential reporting mode is selected to report the sub-band, and the sub-band reporting mode has a low complexity, which saves the base station configuration cost.
  • the sub-band reporting mode is a cross-reporting mode; step 120 includes:
  • the sub-band reported by the N-th sub-band corresponding to the bandwidth of each part is determined as the current sub-reporting sub-band according to the preset reporting rule corresponding to the cross-reporting mode, where N is An integer less than or equal to the maximum number of subbands corresponding to a portion of the bandwidth and not zero.
  • the sub-band reporting mode may be selected as the cross-reporting mode, and the sub-band reporting sequence corresponding to the cross-reporting mode is corresponding to the current service type.
  • the preset sub-bands are reported in the order of reporting.
  • the current sub-band reporting period is the Nth sub-band reporting period, where N indicates that the sub-band corresponding to the partial bandwidth is reported in the Nth time, and the sub-band obtained in the Nth time is in the order of the preset sub-band reporting.
  • the band is preset to the sub-band reporting order corresponding to the Nth sub-band, where N is an integer and N is less than or equal to the corresponding number of sub-bands in the partial bandwidth.
  • the terminal frequency domain resource includes a part of the bandwidth, which is a first part bandwidth BP1, a second part bandwidth BP2, ..., a kth part bandwidth BPk, wherein each part of the bandwidth includes n sub-bands, respectively Subband SB1, second subband SB2, ..., nth subband SBn.
  • the preset subband reporting order for each partial bandwidth is SB1, SB3, SB2, SB5, SB4, ..., SBn, SBn-1; when n is even, the bandwidth is preset for each part.
  • the sub-band reporting order is SB1, SB3, SB2, SB4, SB5, ..., SBn-2, SBn.
  • the SB1 corresponding to SB1, BP2 corresponding to BP1, and the first sub-band SB1 corresponding to BPk are respectively determined as
  • the power parameters corresponding to the first sub-band SB1 of BP1, BP2, ..., and BPk are respectively configured to be 1 and the power parameters corresponding to the remaining sub-bands are configured as 1/. 2, so that the terminal selects the first sub-band corresponding to each partial bandwidth in the first sub-band reporting period for reporting.
  • the third sub-band SB3 corresponding to BP1, BP2, ..., and BPk is respectively used as the current waiting for each partial bandwidth according to the preset sub-band reporting order.
  • the sub-band is reported, and the power configuration parameters corresponding to the third sub-band SB3 corresponding to BP1, BP2, ..., and BPk are respectively set to 1, and the power parameters corresponding to the remaining sub-bands are configured to be 1/2, so that the terminal is in the
  • the second sub-band reporting period selects the third sub-band corresponding to each partial bandwidth for reporting.
  • the sub-band reporting is performed according to the preset sub-band reporting order until the nth sub-band or the n-1th sub-corresponding to BP1, BP2, ..., and BPk in the nth or n-1 sub-band reporting period respectively.
  • the power parameter corresponding to the SBn is configured to be 1
  • the power parameters corresponding to the remaining sub-bands are configured to be 1/2, so that the terminal selects the n-th sub-band corresponding to each partial bandwidth in the nth or n-1th sub-band reporting period.
  • the n-1th sub-band is reported, thereby completing the periodic reporting process of the sub-band, wherein finally reporting the n-th sub-band or the n-1th sub-band is related to the total number of sub-bands, and reporting according to the preset sub-band In the order, when n is an odd number, the n-1 sub-band is finally reported, and when n is an even number, the n-th sub-band is finally reported.
  • the preset sub-band reporting sequence may be set according to the user's own needs or may be preset according to the terminal service type, and the cross-reporting may be implemented to improve the timeliness, which is not specifically limited herein.
  • the sub-band cross-reporting is performed according to the preset sub-band reporting sequence, and the sub-band cross-reporting can cancel the delay between the sub-bands and improve the terminal service. Timeliness.
  • the periodic subband reporting method further includes:
  • the receiving terminal indicates the PMI according to the pre-coding matrix corresponding to the bandwidth periodically reported by the preset broadband reporting mode, and the first codebook sequence number obtained by the PMI, and detects that the first codebook sequence reported by the terminal does not change in the adjacent period.
  • the triggering precoding type indicates that the PTI is enabled, so that the terminal can report the CSI corresponding to the subband after reporting the second codebook number obtained by the broadband according to the PMI.
  • the periodic mode that supports the reporting of the subband is pre-configured to be a mode in which the terminal reports CSI, such as mode2-1.
  • the terminal periodically reports the first codebook sequence number corresponding to the terminal bandwidth according to the preset CSI mode, and the base station detects the first codebook sequence number reported by the terminal, and detects the periodic report first according to the LTE protocol.
  • the precoding type indicator PTI Precoding Type Indicator
  • the terminal performs sub-band reporting. First, the terminal reports the second codebook sequence number corresponding to the broadband, and then reports the CSI corresponding to the sub-band, where the sub-band CSI includes the sub-band PMI and the sub-band CQI.
  • the terminal is in the mode 2-1 according to the pre-configured CSI reporting mode.
  • the terminal reports the RI (Rank Indication) and the PTI in the first reporting period, and reports the RI (Rank Indication) and the PTI in the RI feedback period.
  • the two codebook serial number W2 feedback period reporting subband carries the second codebook serial number W2 and CQI, and the subband CQI belongs to one of the subband CSI.
  • Np denotes a second subband W2 codebook number of the feedback cycle
  • H 1 * Np represents a number of broadband second codebook of W2 feedback cycle
  • the LTE protocol is used to configure the periodic reporting protocol that can support the sub-band reporting, and the triggering condition of the reporting sub-band is configured according to the protocol, and the periodicity of all sub-bands is implemented on the basis of the periodic reporting mode of the LTE protocol. Reported to better feedback channel status information.
  • the sub-band CSI is reported, which can provide a high-precision reporting channel result, and can better perform service transmission for the terminal that schedules part of the frequency domain resource.
  • the method further includes:
  • Step S140 Acquire a precoding matrix indication PMI and a channel quality indicator CQI corresponding to each subband according to the CSI corresponding to the subband periodically reported by the terminal, and allocate a corresponding modulation and coding strategy MCS and a frequency domain according to the PMI and the CQI. Resources.
  • the terminal periodically reports the CSI corresponding to the sub-band, and after reporting the CSI corresponding to the currently reported sub-band in the current sub-band reporting period, the CSI corresponding to the currently reported sub-band is updated, and the CSI mainly refers to the sub-band PMI and the CQI.
  • the terminal is configured with a reasonable MCS and frequency domain resources, and reports the codebook serial number corresponding to the more accurate precoding.
  • the base station evaluates the channel according to the received sub-band CSI information reported by the terminal, thereby configuring a reasonable MCS and frequency domain resources for the terminal channel, improving system performance, and providing more accurate precoding corresponding.
  • the codebook serial number can reduce the interference of other users to the target user.
  • a method for periodically reporting subbands including the following:
  • Step S410 Acquire a CSI reported by the terminal according to the preset broadband mode, where the CSI includes a broadband PMI and a first frame number of the broadband.
  • the base station can configure the terminal reporting mode to the broadband mode mode 2-1 according to the LTE protocol, and the broadband mode mode 2-1 is a mode that supports universal subband transmission.
  • the terminal periodically measures and reports the bandwidth CSI according to the periodic reporting mode configured by the base station through the high-level configuration signaling, where the CSI includes the bandwidth PMI and the first codebook serial number, where the codebook is used to reflect the channel capacity of a system.
  • the codebook is jointly determined by the first codebook serial number and the second codebook serial number, and the first codebook serial number represents a feature of the codebook.
  • Step S420 When it is detected that the first codebook sequence number of the broadband does not change in the adjacent period, the trigger precoding type indication PTI is enabled.
  • Step S430 Select a sub-band reporting mode of a partial bandwidth according to the current service type corresponding to the received terminal as a sequential reporting mode, and determine a sub-band reporting sequence corresponding to the sequential reporting mode.
  • the different bandwidths correspond to different partial broadband numbers
  • the different partial bandwidth numbers correspond to different sub-band numbers.
  • the base station acquires the number of sub-bands corresponding to the terminal according to the LTE protocol according to the allocated bandwidth of the terminal.
  • the sub-band reporting sequence corresponding to the sequential reporting mode is to report the adjacent sub-bands in sequence.
  • the analogy is sequentially performed until each partial bandwidth reports all sub-bands.
  • the base station can determine the current service type of the terminal according to the terminal type information in the measurement information reported by the terminal, and when the terminal service type is detected as the low-time service type, the sequential reporting mode is selected to periodically report the sub-band, as shown in FIG. 5
  • the sub-band reporting sequence corresponding to the sub-band sequential reporting mode is provided.
  • Each partial bandwidth reports the sub-bands according to SBi, SBj, SBk... in different sub-band reporting periods, where SBi, SBj, SBk are adjacent sub-bands.
  • each part of the bandwidth reports the same sub-band.
  • each part of the bandwidth reports the first sub-band in the part of the bandwidth.
  • Step S440 the first sub-band in each partial bandwidth is used as the current to-be-advertised sub-band in the first sub-band reporting period.
  • Step S450 Configure a maximum power parameter for the current sub-band to be reported, and configure a power parameter lower than the maximum power parameter for the other sub-bands, so that the terminal obtains the maximum power parameter according to the sub-band reporting rule corresponding to the preset maximum throughput.
  • the subband is the current reported subband, and reports the CSI corresponding to the currently reported subband.
  • the base station may determine, according to the sub-band reporting sequence, the reporting sub-band corresponding to the bandwidth of each part in the reporting period of each sub-band, and configure the power parameter of the current to-be-reported sub-band corresponding to the current reporting period in each partial bandwidth to be 1, and the remaining sub-bands
  • the power parameter is configured to 1/2.
  • Pre-setting the rule that the terminal selects the sub-band to report is the maximum throughput rule, and the terminal obtains the corresponding sub-band for reporting according to the preset rule, because the base station pre-sets the power of the current to-be-reported sub-band corresponding to the current sub-band reporting period to the maximum. Therefore, the subband selected by the terminal in the current period is the current subband to be transmitted.
  • the base station can control the power of the sub-band to enable the terminal to send the current to-be-transmitted sub-band determined by the base station as the current transmission sub-band when performing the sub-band reporting. Therefore, when the base station performs power configuration on the corresponding sub-band according to the sub-band reporting sequence, Periodic reporting of all sub-bands can be achieved.
  • step S460 the Mth subband reporting period is obtained, and the Mth subband corresponding to each part of the bandwidth is obtained as the current subband to be reported. Step S450 is performed until each part of the bandwidth reports the CSI corresponding to all the subbands.
  • the reporting in sequence refers to the second sub-band reporting period after the end of the first sub-band reporting period, and the sub-band is reported for the second time in the second sub-band reporting period, and the reported sub-band is the second sub-band.
  • Band sequentially modify the power parameter corresponding to the second sub-band to be 1, and the remaining power parameters are 1/2 to complete the reporting of the CSI of the second sub-band in each part of the bandwidth, and so on, in the M-th sub-band reporting period, reporting
  • the CSI of the Mth subband of each partial bandwidth is up to the CSI of all the corresponding subbands after each partial bandwidth is reported.
  • Step S470 Configure the MCS and the frequency domain resource for the terminal according to the sub-band CSI reported by the terminal.
  • the base station selects the sequential reporting mode based on the service type timeliness, which reduces system complexity and increases cost.
  • the base station sequentially performs power control on the sub-bands in each part of the bandwidth according to the sub-band sequential reporting mode, so that the control terminal completes reporting of all sub-bands of each part of the bandwidth, thereby improving system performance.
  • a method for periodically cross-reporting sub-bands including the following:
  • Step S610 Acquire a CSI reported by the terminal according to a preset broadband mode, where the CSI includes a broadband PMI and a broadband first codebook sequence number.
  • Step S620 When it is detected that the first codebook sequence number of the broadband does not change in the adjacent period, the trigger precoding type indication PTI is enabled.
  • step S630 the sub-band reporting mode corresponding to the partial bandwidth is selected as the cross-reporting mode according to the current service type corresponding to the received terminal, and the preset sub-band reporting sequence corresponding to the cross-reporting mode in each partial bandwidth is determined.
  • the preset sub-band reporting sequence corresponding to the cross-report mode is a pre-specified sub-band reporting sequence, and the reporting sequence is independent of the sub-band position, and can be set as needed. As shown in FIG. 7 , a preset corresponding to the cross reporting mode is provided.
  • the sub-band reporting sequence is reported in the order of SBi, SBk, SBj, ... for each partial bandwidth in different sub-band reporting periods, where SBi, SBj, SBk are adjacent sub-bands. It can also be reported in the order of SBj, SBi, SBk..., where SBi, SBj, SBk are adjacent sub-bands, and the style of cross-reporting can be determined according to user requirements.
  • step S640 the first sub-band reporting period is obtained, and the first sub-band corresponding to the preset sub-band reporting sequence in each partial bandwidth is obtained as the current to-be-advertised sub-band.
  • the sub-band reporting sequence corresponding to the cross-reporting sub-band is SBj, SBi, SBk, ...
  • the first sub-band reporting period is obtained, and the first sub-band SBj corresponding to the sub-band reporting order is obtained as the current sub-band to be reported.
  • Step S650 Configure a maximum power parameter for the current sub-band to be reported, and configure a power parameter lower than the maximum power parameter for the other sub-bands, so that the terminal obtains the maximum power parameter according to the sub-band reporting rule corresponding to the preset maximum throughput.
  • the subband is the current reported subband, and reports the CSI corresponding to the currently reported subband.
  • step S660 in the Mth reporting period, the Mth subband corresponding to the preset subband reporting sequence corresponding to each partial bandwidth is obtained as the current subband to be reported, and step S650 is performed until all the subbands are reported in the bandwidth of each part. CSI.
  • Step S670 Configure the MCS and the frequency domain resource for the terminal according to the sub-band CSI reported by the terminal.
  • the cross-reporting mode is adopted, and the sub-band reporting sequence is set according to the user service type or the service type according to the service type of the terminal, and the time-effectiveness of the sub-band reporting is improved, and the base station sequentially performs power on the sub-band according to the preset sub-band reporting sequence.
  • the control enables the terminal to select the terminal that the base station currently requests to report according to the maximum throughput rule, thereby implementing periodic reporting of all sub-bands, thereby improving system performance.
  • a periodic subband reporting apparatus including:
  • the sub-band reporting sequence determining module 810 is configured to determine a sub-band reporting mode of the partial bandwidth corresponding to the terminal according to the current service type corresponding to the received terminal, and determine a sub-band reporting sequence corresponding to the sub-band reporting mode in each partial bandwidth.
  • the current to-be-reported sub-band obtaining module 820 is configured to determine, according to the sub-band reporting order, the current to-be-reported sub-band corresponding to the bandwidth of each part of the current sub-band reporting period.
  • the sub-band power control module 830 is configured to configure a power parameter corresponding to the current to-be-reported sub-band corresponding to each partial bandwidth as a unique maximum power parameter.
  • a periodic sub-band reporting apparatus is provided, and the sub-band reporting mode of the partial bandwidth corresponding to the terminal is determined according to the service type of the terminal, and the sub-band reporting mode of the partial bandwidth corresponding to the terminal is determined according to the information received by the terminal, and the sub-band is obtained.
  • the sub-band reporting sequence corresponding to the reporting mode is performed. Further, in each sub-band reporting period, the base station determines the current to-be-reported sub-band corresponding to the current reporting period according to the sub-band reporting sequence, and configures a maximum power parameter for the current sub-band to be reported.
  • the configuration power parameter corresponding to the other sub-bands of the current sub-band to be reported in the partial bandwidth is smaller than the maximum power parameter, and the current power to be reported sub-band corresponding to the current sub-band reporting period is the largest.
  • the power control of the base station enables the terminal to periodically report the sub-band information according to the sub-band reporting sequence, so that the downlink channel quality is fully fed back to the base station through all the sub-bands, which is beneficial for the base station to allocate appropriate frequency domain resources according to the feedback downlink channel quality. To the terminal, thereby improving system performance.
  • the sub-band reporting mode is a sequential reporting mode; the current to-be-reported sub-band obtaining module 820 is further configured to determine each part according to the sequential reporting mode when the current sub-band reporting period is the Nth sub-band reporting period.
  • the Nth subband corresponding to the bandwidth is the current subband to be reported, where N is an integer less than or equal to the maximum number of subbands corresponding to the partial bandwidth and not zero.
  • the sub-band reporting mode is a cross-reporting mode
  • the current sub-band reporting sub-band obtaining module 820 is further configured to: when the current sub-band reporting period is the Nth sub-band reporting period, according to the preset corresponding to the cross-reporting mode
  • the reporting rule determines that the sub-band reported by the Nth time corresponding to the bandwidth of each part is the current sub-band to be reported, where N is an integer less than or equal to the maximum number of sub-bands corresponding to the partial bandwidth and not zero.
  • the periodic subband reporting device further includes:
  • the triggering module 840 is configured to receive a PMI corresponding to the broadband corresponding precoding matrix periodically reported by the terminal according to the preset broadband reporting mode, and a first codebook serial number obtained according to the PMI, when the first codebook serial number does not occur in the adjacent period
  • the trigger precoding type indicates that the PTI is enabled, so that the terminal can report the CSI corresponding to the subband after reporting the second codebook sequence number obtained by the broadband according to the PMI.
  • the periodic subband reporting apparatus further includes:
  • the allocation module 850 is configured to acquire a precoding matrix indication PMI and a channel quality indicator CQI corresponding to each subband according to the CSI corresponding to the subband periodically reported by the terminal, and allocate a corresponding modulation and coding policy MCS according to the PMI and the CQI. And frequency domain resources.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the method described in the foregoing embodiments.
  • Computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules, or other data. , removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer.
  • communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media.
  • a modulated data signal such as a carrier wave or other transport mechanism
  • the base station side power control can be used to implement periodic sub-band reporting of the UE, so that the downlink channel quality is fully fed back to the base station through all sub-bands, thereby improving system performance.

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Abstract

一种周期性子带上报方法，包括：根据接收到的终端对应的当前业务类型确定终端对应的部分带宽的子带上报模式，并确定子带上报模式对应的子带上报顺序；根据子带上报顺序将当前子带上报周期每个部分带宽对应的当前待上报子带的功率参数配置为唯一的最大功率参数。还提供一种周期性子带上报装置。

Description

周期性子带上报方法和装置 技术领域
本文涉及但不限于无线通信技术领域，特别是涉及周期性子带上报方法和装置。
背景技术
在LTE(Long Term Evolution，长期演进)系统中，为了更好的适应无线信道的变化，UE(User Equipment，用户设备)通过上报CSI(Channel State Information，信道状态信息)将下行信道质量上报给基站，以便基站为UE配置更可靠的MCS(Modulation and Coding Scheme，调制与编码策略)。
在LTE协议中，包括周期性CSI上报模式和非周期性CSI上报模式，非周期性CSI上报模式能够实现全部子带的CQI(Channel Quality Indicator，信息质量指示)和PMI(Precoding Matrix Indicator，预编码矩阵指示)的上报，但是非周期性CSI上报模式要在特定场景下才能触发，而周期性CSI上报模式不能实现完整的子带上报，从而不能完整的反馈下行信道质量，导致系统性能下降。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
基于此，本发明实施例提供一种周期性子带上报方法和装置，能够利用基站侧功率控制，实现UE周期性的子带上报，从而通过全部子带完整的反馈下行信道质量至基站，提高系统性能。
一种周期性子带上报方法，所述方法包括：
根据接收到的终端对应的当前业务类型确定所述终端对应的部分带宽的子带上报模式，并确定所述子带上报模式对应的子带上报顺序；
根据所述子带上报顺序确定当前子带上报周期每个部分带宽对应的当前待上报子带；
将每个部分带宽对应的所述当前待上报子带对应的功率参数配置为唯一的最大功率参数。
一种周期性子带上报装置，所述装置包括：
子带上报顺序确定模块，设置为根据接收到的终端对应的当前业务类型确定所述终端对应的部分带宽的子带上报模式，并确定所述子带上报模式对应的子带上报顺序；
当前上报子带获取模块，设置为根据所述子带上报顺序确定当前子带上报周期每个部分带宽对应的当前待上报子带；
子带功率控制模块，设置为将每个部分带宽对应的所述当前待上报子带对应的功率参数配置为唯一的最大功率参数。
上述周期性子带上报方法和装置，通过接收终端上报的信息获取终端当前对应的业务类型，从而根据终端的业务类型确定终端对应的部分带宽的子带上报模式，并获取子带上报模式对应的子带上报顺序，进一步，在每一个子带上报周期中，基站根据子带上报顺序确定当前上报周期每个部分带宽对应的当前待上报子带，并为当前待上报子带配置最大功率参数，且在一个部分带宽中除当前待上报子带外的其他子带对应的配置功率参数均小于最大功率参数，保证当前子带上报周期对应的当前待上报子带功率最大。通过基站的功率控制能够使终端按照子带上报顺序周期性的上报子带信息，从而通过全部子带完整的反馈下行信道质量至基站，有利于基站根据反馈的下行信道质量分配合适的频域资源至终端，从而提高系统性能。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为一个实施例中周期性子带上报方法流程图；
图2A为一个实施例中周期性CSI上报模式对应的周期关系示意图；
图2B为一个实施例中周期性子带CSI上报模式对应的周期关系示意图；
图3为另一个实施例中周期性子带上报方法流程图；
图4为一个实施例中周期性顺序子带上报方法流程图；
图5为图4中对应的顺序子带上报的示意图；
图6为一个实施例中周期性交叉子带上报方法流程图；
图7为图6中对应的交叉子带上报示意图；
图8为一个实施例中周期性子带上报装置的结构示意图；
图9为另一个实施例中周期性子带上报装置的结构示意图；
图10为又一个实施例中周期性子带上报装置的结构示意图。
本发明的实施方式
以下结合附图及实施例，对本发明实施例进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
如图1所示，在一个实施例中，提供一种周期性子带上报方法，包括以下内容：
步骤S110，根据接收到的终端对应的当前业务类型确定终端对应的部分带宽的子带上报模式，并确定子带上报模式对应的子带上报顺序。
终端当前业务类型主要根据Service request(服务请求)消息中的Service Type(服务方式)进行区分，Service Type主要包括：signaling(信号发射)、data(数据)、paging Response(寻呼应答)和Broadcast Service Reception(广播服务接收)四种类型，时效性依次从高到低。这里的终端包括用户设备UE。
在LTE技术领域，按照LTE协议的规定，根据系统分配给终端的宽带(Wide Band)可以确定宽带对应的部分带宽(Bandwidth Parts)数目，进一步根据部分带宽的数目可以确定对应的子带(SubBand)数目。子带上报即是对部分带宽中的子带进行上报，子带上报顺序的不同影响终端业务的时效性，因此根据终端对应的当前业务类型时效性的高低，确定终端对应的部分带宽的子带上报模式，子带上报模式包括顺序上报模式和交叉上报模式，不 同的子带上报模式对应不同的子带上报顺序，子带上报顺序是指每一个部分带宽对应的子带上报顺序，每一部分带宽子带上报顺序相同。
步骤S120，根据子带上报顺序确定当前子带上报周期每个部分带宽对应的当前待上报子带。
终端可以根据子带上报顺序对子带进行周期性上报，子带上报周期为终端带宽对应的所有部分带宽分别上报一个对应的子带的周期。基站根据子带上报顺序分别确定每个部分带宽对应于当前上报周期的子带为当前待上报子带。
步骤S130，将每个部分带宽对应的当前待上报子带对应的功率参数配置为唯一的最大功率参数。
基站可以对每个部分带宽中的子带进行功率控制，设置当前待上报子带对应的功率配置参数为最大功率参数，同时设置除当前待上报子带对应的功率配置参数均小于最大功率参数，保证基站根据子带上报顺序确定的每一个部分带宽中的当前待上报子带功率最大。
当基站对子带功率进行配置之后，终端可以按照预设子带上报规则获取对应的子带，并对子带对应的信道状态信息进行上报。当终端对应的预设子带上报规则为预先通过算法和相关LTE协议设置终端子带上报规则为最大吞吐量规则时，最大吞吐量是指系统单位时间内成功传输的数据量，单位为比特每秒。由于最大吞吐量取决于SINR(Signal to Interference plus Noise Ratio，信号与干扰加噪声比)，而SINR计算与功率有关，功率由功率参数控制，因此当终端预设子带上报规则为最大吞吐量规则时，终端获取的子带为当前最大功率参数对应的子带。因此，当基站通过配置子带功率参数使当前待上报子带对应的功率参数最大时，终端根据预设最大吞吐量规则获取的子带即为基站根据子带上报顺序确定的当前待上报子带，同时上报该子带对应的信道状态信息CSI。其中在无线通信领域，信道状态信息CSI，就是通信链路的信道属性，它描述了信号在每条传输路径上的衰弱因子，即信道增益矩阵H中每个元素的值，如信号散射(Scattering)，环境衰弱(fading，multipath fading or shadowing fading)，距离衰减(power decay of distance)等信息。
子带上报为周期性的过程，基站可以根据子带上报顺序获取每个部分带 宽在不同子带上报周期中对应的需要上报的子带，并通过功率控制的方式使终端能够上报对应的子带CSI，从而实现子带的周期性上报。
上述周期性子带上报方法，通过接收终端上报的信息获取终端当前对应的业务类型，从而根据终端的业务类型确定终端对应的部分带宽的子带上报模式，并获取子带上报模式对应的子带上报顺序，进一步，在每一个子带上报周期中，基站根据子带上报顺序确定当前上报周期每个部分带宽对应的当前待上报子带，并为当前待上报子带配置最大功率参数，且在一个部分带宽中除当前待上报子带外的其他子带对应的配置功率参数均小于最大功率参数，保证当前子带上报周期对应的当前待上报子带功率最大。通过基站的功率控制能够使终端按照子带上报顺序周期性的上报子带信息，从而通过全部子带完整的反馈下行信道质量至基站，有利于基站根据反馈的下行信道质量分配合适的频域资源至终端，从而提高系统性能。
在一个实施例中，子带上报模式为顺序上报模式；步骤S120包括：
当当前子带上报周期为第N次子带上报周期时，根据顺序上报模式确定每个部分带宽对应的第N个子带为当前待上报子带，其中N为小于或等于部分带宽对应的最大子带数目且不为零的整数。
当判断终端上报的当前业务类型为时效性较低的业务类型时，可以选择子带上报模式为顺序上报模式，顺序上报模式对应的子带上报顺序为按照部分带宽中子带的排列顺序依次上报子带。当当前子带上报周期为第N次子带上报周期时，其中N表示第N次获取部分带宽对应的子带进行上报，按照顺序上报顺序，第N次获取的部分带宽对应的子带为第N个子带，将第N个子带作为当前上报子带，并配置为最大功率参数，其中N为整数且N小于或等于部分带宽中对应的子带数目。
例如，终端频域资源包括部分带宽的数目为k，分别为第一部分带宽BP1、第二部分带宽BP2、……、第k部分带宽BPk，其中每个部分带宽包括n个子带，分别为第一子带SB1、第二子带SB2、……、第n子带SBn。
按照周期性的顺序上报模式，当当前子带上报周期为第一子带上报周期时，则分别确定BP1对应的SB1、BP2对应的SB1、……、以及BPk对应的第一子带SB1作为每个部分带宽对应的当前待上报子带，并且分别将BP1、 BP2、……、以及BPk中对应的第一子带SB1对应的功率参数配置为1，其余子带对应的功率参数配置为1/2，以使终端在第一子带上报周期选择每个部分带宽对应的第一子带进行上报。
当当前子带上报周期为第二子带上报周期时，则分别将BP1、BP2、……、以及BPk对应的第二子带SB2为每个部分带宽对应的当前待上报子带，并分别将BP1、BP2、……、以及BPk对应的第二子带SB2对应的功率配置参数配置为1，其余子带对应的功率参数配置为1/2，以使终端在第二子带上报周期选择每个部分带宽对应的第二子带进行上报。依次类推，直到在第n子带上报周期分别将BP1、BP2、……、以及BPk对应的第n子带SBn对应的功率参数配置为1，其余子带对应的功率参数配置为1/2，以使终端在第n子带上报周期选择每个部分带宽对应的第n子带进行上报，从而完成子带的周期性上报过程。
本实施例中，在终端当前业务类型为低时效性的业务类型时，选择顺序上报模式对子带进行上报，子带上报模式复杂度较低，节省了基站配置成本。
在一个实施例中，子带上报模式为交叉上报模式；步骤120包括：
当当前子带上报周期为第N次子带上报周期时，根据交叉上报模式对应的预设上报规则确定每个部分带宽对应的第N次上报的子带为当前待上报子带，其中N为小于或等于部分带宽对应的最大子带数目且不为零的整数。
本实施例中，当判断终端上报的当前业务类型为时效性较高的业务类型时，可以选择子带上报模式为交叉上报模式，交叉上报模式对应的子带上报顺序为按照当前业务类型对应的预设子带上报顺序进行上报。当当前子带上报周期为第N次子带上报周期时，其中N表示第N次获取部分带宽对应的子带进行上报，按照预设子带上报顺序，第N次获取的部分带宽对应的子带为预设子带上报顺序对应在第N个子带，其中N为整数且N小于或等于部分带宽中对应的子带数目。
例如，终端频域资源包括部分带宽的数目为k，分别为第一部分带宽BP1、第二部分带宽BP2、……、第k部分带宽BPk，其中每个部分带宽包括n个子带，分别为第一子带SB1、第二子带SB2、……、第n子带SBn。
且当n为奇数时，对于每个部分带宽预设子带上报顺序为SB1、SB3、 SB2、SB5、SB4……、SBn、SBn-1；当n为偶数时，对于每个部分带宽预设子带上报顺序为SB1、SB3、SB2、SB4、SB5……、SBn-2、SBn。
按照预设子带上报顺序，当当前子带上报周期为第一子带上报周期时，则分别确定BP1对应的SB1、BP2对应的SB1、……、以及BPk对应的第一子带SB1作为每个部分带宽对应的当前待上报子带，并且分别将BP1、BP2、……、以及BPk中对应的第一子带SB1对应的功率参数配置为1，其余子带对应的功率参数配置为1/2，以使终端在第一子带上报周期选择每个部分带宽对应的第一子带进行上报。当当前子带上报周期为第二子带上报周期时，则根据预设子带上报顺序分别将BP1、BP2、……、以及BPk对应的第三子带SB3为每个部分带宽对应的当前待上报子带，并分别将BP1、BP2、……、以及BPk对应的第三子带SB3对应的功率配置参数配置为1，其余子带对应的功率参数配置为1/2，以使终端在第二子带上报周期选择每个部分带宽对应的第三子带进行上报。
依次类推，按照预设子带上报顺序进行子带上报，直到在第n或n-1子带上报周期分别将BP1、BP2、……、以及BPk对应的第n子带或第n-1子带SBn对应的功率参数配置为1，其余子带对应的功率参数配置为1/2，以使终端在第n或第n-1次子带上报周期选择每个部分带宽对应的第n子带或第n-1子带进行上报，从而完成子带的周期性上报过程，其中最后对第n子带还是第n-1子带进行上报与子带的总数目有关，按照预设子带上报顺序，当n为奇数时，最终上报的为第n-1子带，当n为偶数时，最终上报的为第n子带。
本实施例中，预设子带上报顺序可以根据用户需要自己设置也可以根据终端业务类型预先设置，实现交叉上报提高时效性即可，在此不做具体限定。本实施例中，当终端当前业务类型为高时效性业务类型时，根据预设子带上报顺序进行子带交叉上报，通过子带交叉上报能够抵消子带之间的时延，提高终端业务的时效性。
在一个实施例中，周期性子带上报方法还包括：
接收终端根据预设宽带上报模式周期性上报的宽带对应的预编码矩阵指示PMI，以及根据PMI获取的第一码本序号，当检测到终端上报的第一码本 序号在相邻周期不发生变化时，触发预编码类型指示PTI使能，以使终端能够在上报宽带根据PMI获取的第二码本序号后，上报子带对应的CSI。
本实施例中，根据LTE协议，预先配置支持子带上报的周期性模式为终端上报CSI的模式，如mode2-1。终端根据预设配置的上报CSI的模式，周期性上报终端带宽对应的第一码本序号，基站对终端上报的第一码本序号进行检测，根据LTE协议，当检测到在周期性上报第一码本序号过程中，当第一码本序号在相邻两个周期不发生变化时，则能够触发预编码类型指示PTI(Precoding Type Indicator)使能，也就是触发PTI＝1，当PTI＝1时，根据LTE协议，终端进行子带上报，首先终端上报宽带对应的第二码本序号，然后对子带对应的CSI进行上报，其中子带CSI中包括子带PMI和子带CQI。
结合图2A所示，终端根据预先配置CSI上报模式为mode2-1，当PTI＝0时，终端在第一上报周期上报RI(Rank Indication，秩指示)以及PTI，并在RI反馈周期内至少上报一次带宽PMI和第一码本序号W1，并在第一码本序号W1的反馈周期内至少上报一次宽带第二码本序号W2和CQI(Channel Quality Indicator，信道质量指示)，也就是当PTI＝0时，上报宽带第一码本序号W1和第二码本序号W2，Np表示宽带第二码本序号W2的反馈周期，H0*Np表示宽带第一码本序号W1的反馈周期，M RI*H 1*Np为宽带RI反馈周期。
如图2B所示，当检测到第一码本序号W1在相邻周期不变时，触发PTI＝1，上报RI和PTI，在RI反馈周期上报带宽第二码本序号W2和CQI，在第二码本序号W2反馈周期上报子带第二码本序号W2和CQI，子带CQI属于子带CSI中的一种。Np表示子带第二码本序号W2的反馈周期，H 1*Np表示宽带第二码本序号W2的反馈周期，M RI*H 1*Np为宽带RI反馈周期。
本实施例中，利用LTE协议配置能够支持子带上报的周期性上报协议，并且根据协议配置上报子带的触发条件，在LTE协议周期性上报模式的基础上，实现对全部子带的周期性上报，从而更好的反馈信道状态信息。另外在上报带宽第二码本序号W2后上报子带CSI，能够提供高精度的上报测量信道结果，对于调度部分频域资源的终端能更好的进行业务发送。
如图3所示，在一个实施例中，方法还包括：
步骤S140，根据终端周期性上报的子带对应的CSI，获取当前每个子带对应的预编码矩阵指示PMI和信道质量指示CQI，根据PMI和CQI为终端分配对应的调制与编码策略MCS和频域资源。
本实施例中，终端周期性上报子带对应的CSI，在当前子带上报周期上报当前上报子带对应的CSI后，更新当前上报子带对应的CSI，CSI主要是指子带PMI和CQI，获取当前上报子带对应的当前PMI，并采用前后插值的方法更新其他子带对应的CSI，获取更新后的PMI，并且结合宽带CQI和子带CQI对信道质量和子带码本序号进行评估，为对应终端配置合理的MCS和频域资源，同时上报更加精准的预编码对应的码本序号。
本实施例中，基站根据接收到的终端上报的子带CSI信息，对信道进行评估，从而为终端信道配置合理的MCS和频域资源，提高了系统性能，并且提供更加精准的预编码对应的码本序号能够降低其他用户对目标用户的干扰。
如图4所示，结合图5，在一个实施例中，提供一种周期性顺序上报子带的方法，包括以下内容：
步骤S410，获取终端根据预设宽带模式上报的CSI，CSI包括宽带PMI和宽带第一码本序号。
基站可以根据LTE协议，配置终端上报模式为宽带模式mode2-1，宽带模式mode2-1为具有普适性的支持子带传输的模式。终端根据基站通过高层配置信令配置的周期性上报模式，对带宽CSI进行周期性测量和上报，其中CSI包括带宽PMI和带宽第一码本序号，其中码本用来反映一个系统的信道容量，码本由第一码本序号和第二码本序号共同决定，第一码本序号表征码本的一个特征。
步骤S420，当检测到宽带第一码本序号在相邻周期不发生变化时，触发预编码类型指示PTI使能。
当根据终端周期性上报的CSI检测到宽带第一码本序号在相邻周期不发生变化，可以根据LTE协议，触发预编码类型指示PTI使能，此时PTI＝1，当PTI＝1时，终端能够进行子带上报。
步骤S430，根据接收到的终端对应的当前业务类型选择部分带宽的子带上报模式为顺序上报模式，并确定顺序上报模式对应的子带上报顺序。
可以根据LTE协议规定，不同的带宽对应不同的部分宽带数目，不同的部分带宽数目对应不同的子带数目，基站根据终端被分配的带宽按照LTE协议获取终端对应的子带数目。顺序上报模式对应的子带上报顺序为依次对相邻子带进行上报。当在第一子带上报周期对第一子带进行上报时，则在第二子带上报周期对第二子带进行上报，按照顺序依次类推，直至每个部分带宽上报全部子带。
基站可以根据终端上报的测量信息中的终端类型信息，判断终端当前业务类型，当检测到终端业务类型为低时效性业务类型时，选择顺序上报模式对子带进行周期性上报，如图5所示，提供一种子带顺序上报模式对应的子带上报顺序。每个部分带宽在不同的子带上报周期分别按照SBi、SBj、SBk…对子带进行上报，其中SBi、SBj、SBk为相邻的子带。在同一个子带上报周期，每一个部分带宽上报相同的子带，如在第一子带上报周期，每一个部分带宽均上报该部分带宽中的第一子带。
步骤S440，在第一子带上报周期将每个部分带宽中的第一个子带作为当前待上报子带。
步骤S450，为当前待上报子带配置最大功率参数，同时为其他子带配置低于最大功率参数的功率参数，以使终端根据预设最大吞吐量对应的子带上报规则获取到最大功率参数对应的子带为当前上报子带，上报当前上报子带对应的CSI。
基站可以根据子带上报顺序确定每个子带上报周期中每个部分带宽对应的上报子带，将每个部分带宽中当前上报周期对应的当前待上报子带的功率参数配置为1，其余子带的功率参数配置为1/2。预先设置终端选择子带上报的规则为最大吞吐量规则，终端根据预设规则，获取对应的子带进行上报，由于基站预先将当前子带上报周期对应的当前待上报子带的功率设置为最大，因此，终端在当前周期选择到的子带即为当前待发送子带。基站通过控制子带功率，使终端能够在进行子带上报时将基站确定的当前待发送子带作为当前发送子带发送，因此，当基站按照子带上报顺序对相应子带进行功率配置 时，能够实现全部子带的周期性上报。
步骤S460，在第M次子带上报周期，获取每个部分带宽对应的第M个子带作为当前待上报子带，执行步骤S450，直至每个部分带宽上报全部子带对应的CSI。
按照顺序依次上报是指在第一子带上报周期结束后，进入第二子带上报周期，在第二子带上报周期每个部分带宽第二次上报子带，上报的子带为第二个子带，依次修改第二个子带对应的功率参数为1，其余功率参数为1/2完成对每个部分带宽中第二个子带的CSI的上报，依次类推，在第M个子带上报周期，上报每个部分带宽的第M个子带的CSI，直至每个部分带宽上报完对应的全部子带的CSI。
步骤S470，根据终端上报的子带CSI，为终端配置MCS和频域资源。
本实施例中，基站基于业务类型时效性选择顺序上报模式，降低了系统复杂度，提高了成本。同时，基站按照子带顺序上报模式对每个部分带宽中的子带依次进行功率控制，从而实现控制终端完成对每个部分带宽的全部子带的上报，提高了系统性能。
如图6所示，在一个实施例中，提供一种周期性交叉上报子带的方法，包括以下内容：
步骤S610，获取终端根据预设宽带模式上报的CSI，CSI包括宽带PMI和宽带第一码本序号。
步骤S620，当检测到宽带第一码本序号在相邻周期不发生变化时，触发预编码类型指示PTI使能。
步骤S630，根据接收到的终端对应的当前业务类型选择部分带宽对应的子带上报模式为交叉上报模式，并确定每个部分带宽中交叉上报模式对应的预设子带上报顺序。
交叉上报模式对应的预设子带上报顺序为预先规定的子带上报顺序，上报顺序与子带位置无关，能够根据需要进行设置，如图7所示，提供一种交叉上报模式对应的预设子带上报顺序，对于每一个部分带宽在不同的子带上报周期按照SBi、SBk、SBj…的顺序进行上报，其中SBi、SBj、SBk为相邻 的子带。也可以按照SBj、SBi、SBk…的顺序进行上报，其中SBi、SBj、SBk为相邻的子带，交叉上报的样式可以根据用户需求确定。
步骤S640，在第一子带上报周期，获取每个部分带宽中对应的预设子带上报顺序中对应的第一个子带为当前待上报子带。
当交叉上报子带对应的子带上报顺序为SBj、SBi、SBk…时，在第一个子带上报周期，获取子带上报顺序对应的第一个子带SBj为当前待上报子带。
步骤S650，为当前待上报子带配置最大功率参数，同时为其他子带配置低于最大功率参数的功率参数，以使终端根据预设最大吞吐量对应的子带上报规则获取到最大功率参数对应的子带为当前上报子带，上报当前上报子带对应的CSI。
步骤S660，在第M次上报周期，获取每个部分带宽对应的预设子带上报顺序对应的第M个子带为当前待上报子带，执行步骤S650，直至每个部分带宽上报全部子带对应的CSI。
可以假设M为5，在第5次上报周期，预设子带上报顺序对应的子带为SBk+1，则将子带SBk+1作为当前上报子带，依次类推，直到每个部分带宽根据交叉上报模式对应的预设子带上报顺序上报完所有的子带。
步骤S670，根据终端上报的子带CSI，为终端配置MCS和频域资源。
本实施例中，采用交叉上报模式，预先根据终端业务类型根据用户需求或业务类型设置子带上报顺序，提高子带上报的时效性，并且基站根据预设子带上报顺序对子带依次进行功率控制，使终端根据最大吞吐量规则能够选择基站当前要求上报的终端进行上报，从而实现全部子带的周期性上报，提高了系统性能。
如图8所示，在一个实施例中，提供一种周期性子带上报装置，包括：
子带上报顺序确定模块810，设置为根据接收到的终端对应的当前业务类型确定终端对应的部分带宽的子带上报模式，并确定每个部分带宽中子带上报模式对应的子带上报顺序。
当前待上报子带获取模块820，设置为根据子带上报顺序确定当前子带上报周期每个部分带宽对应的当前待上报子带。
子带功率控制模块830，设置为将每个部分带宽对应的当前待上报子带对应的功率参数配置为唯一的最大功率参数。
本实施例中，提供一种周期性子带上报装置，通过接收终端上报的信息获取终端当前对应的业务类型，从而根据终端的业务类型确定终端对应的部分带宽的的子带上报模式，并获取子带上报模式对应的子带上报顺序，进一步，在每一个子带上报周期中，基站根据子带上报顺序确定当前上报周期对应的当前待上报子带，并为当前待上报子带配置最大功率参数，且在一个部分带宽中除当前待上报子带外的其他子带对应的配置功率参数均小于最大功率参数，保证当前子带上报周期对应的当前待上报子带功率最大。通过基站的功率控制能够使终端按照子带上报顺序周期性的上报子带信息，从而通过全部子带完整的反馈下行信道质量至基站，有利于基站根据反馈的下行信道质量分配合适的频域资源至终端，从而提高系统性能。
在一个实施例中，子带上报模式为顺序上报模式；当前待上报子带获取模块820还设置为当当前子带上报周期为第N次子带上报周期时，根据顺序上报模式确定每个部分带宽对应的第N个子带为当前待上报子带，其中N为小于或等于部分带宽对应的最大子带数目且不为零的整数。
在一个实施例中，子带上报模式为交叉上报模式；当前待上报子带获取模块820还设置为当当前子带上报周期为第N次子带上报周期时，根据交叉上报模式对应的预设上报规则确定每个部分带宽对应的第N次上报的子带为当前待上报子带，其中N为小于或等于部分带宽对应的最大子带数目且不为零的整数。
如图9所示，在一个实施例中，周期性子带上报装置还包括:
触发模块840，设置为接收终端根据预设宽带上报模式周期性上报的宽带对应的预编码矩阵指示PMI，以及根据PMI获取的第一码本序号，当第一码本序号在相邻周期不发生变化时，触发预编码类型指示PTI使能，以使终端能够在上报宽带根据PMI获取的第二码本序号后，上报子带对应的CSI。
如图10所示，在一个实施例中，周期性子带上报装置还包括：
分配模块850，设置为根据终端周期性上报的子带对应的CSI，获取当前每个子带对应的预编码矩阵指示PMI和信道质量指示CQI，根据PMI和 CQI为终端分配对应的调制与编码策略MCS和频域资源。
本发明实施例还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述实施例所述的方法。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理单元的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些组件或所有组件可以被实施为由处理器，如数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。
工业实用性
本发明实施例能够利用基站侧功率控制，实现UE周期性的子带上报，从而通过全部子带完整的反馈下行信道质量至基站，提高系统性能。

Claims (11)

  1. 一种周期性子带上报方法，所述方法包括：
    根据接收到的终端对应的当前业务类型确定所述终端对应的部分带宽的子带上报模式，并确定所述子带上报模式对应的子带上报顺序；
    根据所述子带上报顺序确定当前子带上报周期每个部分带宽对应的当前待上报子带；
    将每个部分带宽对应的所述当前待上报子带对应的功率参数配置为唯一的最大功率参数。
  2. 根据权利要求1所述的方法，其中，所述子带上报模式为顺序上报模式；所述根据所述子带上报顺序确定当前子带上报周期每个部分带宽对应的当前待上报子带的步骤包括：
    当所述当前子带上报周期为第N次子带上报周期时，根据所述顺序上报模式确定每个部分带宽对应的第N个子带为当前待上报子带，其中N为小于或等于部分带宽对应的最大子带数目且不为零的整数。
  3. 根据权利要求1所述的方法，其中，所述子带上报模式为交叉上报模式；所述根据所述子带上报顺序确定当前子带上报周期每个部分带宽对应的当前待上报子带的步骤包括：
    当所述当前子带上报周期为第N次子带上报周期时，根据所述交叉上报模式对应的预设上报规则确定每个部分带宽对应的第N次上报的子带为当前待上报子带，其中N为小于或等于部分带宽对应的最大子带数目且不为零的整数。
  4. 根据权利要求1所述的方法，所述方法还包括:
    接收所述终端根据预设宽带上报模式周期性上报的宽带对应的预编码矩阵指示PMI，以及根据所述PMI获取的第一码本序号，当检测到所述终端上报的所述第一码本序号在相邻周期不发生变化时，触发预编码类型指示PTI使能，以使所述终端能够在上报宽带根据所述PMI获取的第二码本序号后，上报子带对应的信道状态信息CSI。
  5. 根据权利要求1或4所述的方法，所述方法还包括：
    根据所述终端周期性上报的子带对应的信道状态信息CSI，获取当前每个子带对应的预编码矩阵指示PMI和信道质量指示CQI，根据所述PMI和所述CQI为所述终端分配对应的调制与编码策略MCS和频域资源。
  6. 一种周期性子带上报装置，所述装置包括：
    子带上报顺序确定模块，设置为根据接收到的终端对应的当前业务类型确定所述终端对应的部分带宽的子带上报模式，并确定所述子带上报模式对应的子带上报顺序；
    当前待上报子带获取模块，设置为根据所述子带上报顺序确定当前子带上报周期每个部分带宽对应的当前待上报子带；
    子带功率控制模块，设置为将每个部分带宽对应的所述当前待上报子带对应的功率参数配置为唯一的最大功率参数。
  7. 根据权利要求6所述的装置，其中，所述子带上报模式为顺序上报模式；所述当前待上报子带获取模块是设置为当所述当前子带上报周期为第N次子带上报周期时，根据所述顺序上报模式确定每个部分带宽对应的第N个子带为当前待上报子带，其中N为小于或等于部分带宽对应的最大子带数目且不为零的整数。
  8. 根据权利要求6所述的装置，其中，所述子带上报模式为交叉上报模式；所述当前待上报子带获取模块是设置为当所述当前子带上报周期为第N次子带上报周期时，根据所述交叉上报模式对应的预设上报规则确定每个部分带宽对应的第N次上报的子带为当前待上报子带其中N为小于或等于部分带宽对应的最大子带数目且不为零的整数。
  9. 根据权利要求6所述的装置，所述装置还包括:
    触发模块，设置为接收所述终端根据预设宽带上报模式周期性上报的宽带对应的预编码矩阵指示PMI，以及根据所述PMI获取的第一码本序号，当所述第一码本序号在相邻周期不发生变化时，触发预编码类型指示PTI使能，以使所述终端能够在上报宽带根据所述PMI获取的第二码本序号后，上报子带对应的信道状态信息CSI。
  10. 根据权利要求6或9所述的装置，所述装置还包括：
    分配模块，设置为根据所述终端周期性上报的子带对应的所述信道状态信息CSI，获取当前每个子带对应的预编码矩阵指示PMI和信道质量指示CQI，根据所述PMI和所述CQI为所述终端分配对应的调制与编码策略MCS和频域资源。
  11. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现权利要求1至5中任一项所述的方法。
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