WO2013185672A1 - 一种上行功率控制方法、终端及基站 - Google Patents

一种上行功率控制方法、终端及基站 Download PDF

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Publication number
WO2013185672A1
WO2013185672A1 PCT/CN2013/079862 CN2013079862W WO2013185672A1 WO 2013185672 A1 WO2013185672 A1 WO 2013185672A1 CN 2013079862 W CN2013079862 W CN 2013079862W WO 2013185672 A1 WO2013185672 A1 WO 2013185672A1
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WO
WIPO (PCT)
Prior art keywords
subframe
uplink
terminal
transmit power
adjustment amount
Prior art date
Application number
PCT/CN2013/079862
Other languages
English (en)
French (fr)
Inventor
李卫敏
李儒岳
任璐
郝鹏
张文峰
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US14/397,658 priority Critical patent/US9538477B2/en
Priority to ES13804019.1T priority patent/ES2635070T3/es
Priority to EP13804019.1A priority patent/EP2833682B1/en
Publication of WO2013185672A1 publication Critical patent/WO2013185672A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • H04W52/146Uplink power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/10Open loop power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/22TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/221TPC being performed according to specific parameters taking into account previous information or commands using past power control commands
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss

Definitions

  • the present invention relates to the field of communications, and in particular, to an uplink power control method, a terminal, and a base station.
  • the uplink and downlink configuration mode of the Long Term Evolution (LTE) system Time Division Duplex (TDD) mode is shown in Table 1, where D indicates that the subframe is used for downlink transmission, and U indicates that the subframe is used for downlink transmission.
  • the frame is used for uplink transmission, and S represents a special subframe and includes three special time slots, that is, a Downlink Pilot Time Slot (DwPTS for downlink transmission) and a Guard Period (GP for short). And Uplink Pilot Time Slot (referred to as UpPTS for uplink transmission).
  • DwPTS Downlink Pilot Time Slot
  • GP Guard Period
  • UpPTS Uplink Pilot Time Slot
  • the uplink and downlink configuration index is notified to the terminal through a broadcast message.
  • the terminal when the uplink and downlink configuration modes of the TDD are the same, the terminal performs uplink transmission and receives uplink interference caused by the uplink transmission of the terminal of the other cell, and when the uplink and downlink configuration modes of the TDD of the cell are different, the terminal performs the uplink interference.
  • the uplink transmission may be uplink interference caused by uplink transmission by other uplink cell terminals, and may also be downlink interference generated by downlink transmission by other downlink cell base stations.
  • the base station Compared with the transmit power of the terminal, the base station has higher transmit power, and the downlink interference generated by the downlink base station for downlink transmission is relatively higher, which may cause the performance of the uplink transmission terminal to deteriorate seriously, and even cause it to be unable to communicate.
  • the uplink open loop power control parameter configured according to the base station is used.
  • the uplink transmit power is calculated, and the uplink transmit power is adjusted according to the Transmit Power Control (TPC) command configured by the base station.
  • the base station sends the uplink open loop power control parameter to the terminal through the RRC (Radio Resource Control) signaling; the base station passes the downlink control information in the Physical Downlink Control Channel (PDCCH) (Downlink Control) Information, referred to as DCI, sends the TPC command to the terminal, and the terminal decodes the DCI to obtain the adjustment amount corresponding to the TPC command.
  • RRC Radio Resource Control
  • PDCCH Physical Downlink Control Channel
  • DCI Downlink Control Information
  • the power adjustment mechanism adjusts the uplink transmit power according to the TPC command configured by the base station, so that the signal to interference and noise ratio (SINR) of the uplink transmission of the terminal is maintained at a certain level to meet the uplink transmission requirement.
  • SINR signal to interference and noise ratio
  • the power adjustment mechanism in the technology adjusts the uplink transmit power according to the TPC command configured by the base station, and the SINR requirement of the uplink transmission cannot be guaranteed, thereby affecting the uplink transmission performance of the terminal and the system. That is to say, the power adjustment mechanism in the related art cannot guarantee that the uplink transmit power is adjusted to a suitable power value in the uplink subframe, so that the uplink transmission performance of the terminal and the system cannot be guaranteed.
  • the embodiment of the present invention provides an uplink power control method, a terminal, and a base station, which can separately adjust or determine uplink transmit power of a terminal on subframes belonging to different subframe groups.
  • the subframe group includes at least a first subframe group and a second subframe group, where: the first subframe group includes a base station configured as an uplink transmission subframe and is separated from the base station by default. Value of other The base station is also configured as a subframe of an uplink transmission subframe, and the second subframe group includes a sub-frame configured by the base station as an uplink transmission subframe and configured by the base station to be a downlink transmission subframe by a distance from the base station.
  • the first subframe group includes an uplink subframe that is less than a preset threshold by other cells
  • the second subframe group includes an uplink subframe that is interfered by the other d and the region exceeds a preset threshold.
  • the terminal determines an uplink transmit power adjustment amount on a subframe that belongs to different subframe groups, including:
  • the terminal Receiving, by the terminal, the power adjustment signaling sent by the base station, determining, according to the adjustment amount corresponding to the power adjustment signaling, and the subframe group information, an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group;
  • the signaling includes an Uplink Transmission Power Control (TPC) command.
  • TPC Uplink Transmission Power Control
  • the adjustment amount corresponding to the power adjustment signaling is an accumulated adjustment amount
  • the terminal determines, according to the adjustment amount corresponding to the power adjustment signaling and the subframe group information, the uplink transmission power on the subframes belonging to different subframe groups. Adjustments, including:
  • the determining, by the terminal, the uplink transmit power adjustment amount on the subframe is: the uplink transmit power adjustment amount of the terminal on the subframe that belongs to the same subframe group of the subframe and the subframe corresponding to the power adjustment signaling
  • the sum of the adjustments namely:
  • indicates the subframe index
  • N indicates the subframe group index
  • the number of subframe groups is greater than or equal to 2
  • the frame index indicates the uplink transmit power adjustment amount determined by the terminal on the subframe ⁇ : (0 indicates the uplink transmit power adjustment amount of the terminal on the subframe z, indicating that the terminal receives the power adjustment for the subframe A transmitted by the base station.
  • the adjustment amount corresponding to the power adjustment signaling is an absolute adjustment amount
  • the terminal determines, according to the adjustment amount corresponding to the power adjustment signaling and the subframe group information, the uplink transmission power on the subframes belonging to different subframe groups. Adjustments, including:
  • the determining, by the terminal, an uplink transmit power adjustment amount on the subframe is an absolute adjustment amount corresponding to the power adjustment signaling, that is,
  • indicates the subframe index
  • N indicates the subframe group index
  • the number of subframe groups is greater than or equal to 2
  • the frame ⁇ : belongs to the Nth subframe group, and represents the uplink transmit power adjustment amount determined by the terminal on the subframe ⁇ :, indicating that the terminal receives the absolute adjustment amount corresponding to the power adjustment signaling for the subframe k transmitted by the base station.
  • the terminal determines, according to the determined uplink transmit power adjustment amount on the subframes belonging to different subframe groups, the uplink transmit power in the corresponding subframe, including:
  • the terminal calculates the uplink transmit power on the subframe according to the following formula:
  • the method further includes: the terminal receiving the subframe group information sent by the base station, and determining, according to the subframe group information, which subframe group the subframe belongs to, where the subframe group information includes: one or more wireless The grouping information of the uplink subframe in the frame, or the information of which subframe group the uplink subframe belongs to.
  • the method further includes: determining, by the terminal, whether to perform determining, by using the subframe group information sent by the base station, whether to perform an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group, or The terminal determines, according to the enabling information sent by the base station, whether to perform the step of determining the uplink transmit power adjustment amount on the subframes belonging to different subframe groups.
  • the method before determining the uplink transmit power, the method further includes: the terminal receiving, by the base station, multiple sets of uplink power control signaling applied to different subframe groups, and each set of uplink power control signaling is applied to one subframe group. ;
  • the determining, by the terminal, the uplink transmit power on the corresponding subframe according to the determined uplink transmit power adjustment amount on the subframe that belongs to the different subframe group, the method includes: the terminal receiving, according to the determined uplink transmit power adjustment amount, the received The uplink power control signaling determines the uplink transmit power of the corresponding subframe.
  • each set of uplink power control signaling includes an uplink open loop power control parameter; and the terminal combines the received uplink power control according to the determined uplink transmit power adjustment amount.
  • the signaling determines the uplink transmit power of the corresponding subframe, including:
  • the terminal calculates an uplink transmit power of the subframe according to the following formula, that is,
  • N represents a system nominal power parameter applied to the Nth subframe group, and represents a path loss compensation factor applied to the Nth subframe group, indicating a downlink path loss estimated by the terminal, and ⁇ indicates a terminal transmission compensation amount, ⁇ ) indicates the amount of uplink transmit power adjustment on the subframe ⁇ : determined by the terminal.
  • the embodiment of the invention further provides an uplink power control method, including:
  • the base station determines the subframe group information, where the subframe group information is used by the terminal to determine an uplink transmit power adjustment amount on the subframes belonging to different subframe groups;
  • the base station sends subframe group information to the terminal.
  • the subframe group includes at least a first subframe group and a second subframe group
  • the determining, by the base station, the subframe group information the: determining, by the base station, that the base station is configured as an uplink transmission subframe and is The other base station whose distance from the base station is less than the preset value is also configured as the subframe of the uplink transmission subframe belongs to the first subframe group, and the base station determines that the base station is configured as an uplink transmission subframe and is separated from the The subframes in which the base station is smaller than the preset value and configured as the downlink transmission subframe belong to the second subframe group; or the base station determines that the uplink subframe that is less than the preset threshold by other cells belongs to the a first subframe group, where the base station determines that an uplink subframe that is interfered by other cells exceeding a preset threshold belongs to the second subframe group;
  • the subframe group information includes: packet information of an uplink subframe in one or more radio frames, or information of which subframe group an uplink subframe belongs to.
  • the subframe group information is further used by the terminal to determine whether to determine an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group.
  • the method further includes: configuring, by the base station, enable information, and sending the The enable information is used by the terminal to determine whether to determine an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group.
  • the method further includes: the base station is configured to apply multiple sets of uplink power control signaling to different subframe groups, and each set of uplink power control signaling is applied to one subframe group; the base station sends an application to the terminal. Multiple sets of uplink power control signaling for different subframe groups.
  • each set of uplink power control signaling includes an uplink open loop power control parameter, and the uplink open loop power control parameter is used by the terminal to calculate an uplink transmit power of the terminal in the subframe, where the subframe is a subframe in a subframe group to which the uplink power control signaling is applied.
  • the embodiment of the present invention further provides a terminal for implementing uplink power control, including a power adjustment amount determining module and a transmitting power determining module, where:
  • the power adjustment amount determining module is configured to determine uplink transmit power adjustment amounts on subframes belonging to different subframe groups, respectively;
  • the transmit power determining module is configured to determine an uplink transmit power on the corresponding subframe according to an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group determined by the power adjustment amount determining module.
  • the subframe group includes at least a first subframe group and a second subframe group, where: the first subframe group includes a base station configured as an uplink transmission subframe and is separated from the base station by default.
  • the other base stations of the value are also configured as subframes of the uplink transmission subframe
  • the second subframe group includes other base stations configured by the base station as uplink transmission subframes and whose distance from the base station is less than a preset value as the downlink transmission subframe.
  • the first subframe group includes an uplink subframe that is less than a preset threshold by other cells
  • the second subframe group includes an uplink subframe that is interfered by the other d and the region exceeds a preset threshold.
  • the power adjustment amount determining module is configured to determine an uplink transmit power adjustment amount on a subframe belonging to different subframe groups in the following manner:
  • the power adjustment signaling includes uplink Transmission Power Control (TPC) command.
  • TPC Transmission Power Control
  • the adjustment amount corresponding to the power adjustment signaling is an accumulated adjustment amount;
  • the power adjustment The quantity determining module is configured to determine an uplink transmit power adjustment amount on a subframe belonging to a different subframe group according to the adjustment amount corresponding to the power adjustment signaling and the subframe group information in the following manner:
  • Determining an uplink transmit power adjustment amount on the subframe is: an uplink transmit power adjustment amount of the terminal on a subframe that belongs to the same subframe group as the subframe and a cumulative adjustment amount corresponding to the power adjustment signaling And, ie:
  • indicates a subframe index
  • N indicates a subframe group index
  • the number of subframe groups is greater than or equal to 2
  • the subframe ⁇ : belongs to the Nth subframe group, and indicates that the previous subframe of the subframe belongs to the subframe of the Nth subframe group.
  • the frame index indicates the uplink transmit power adjustment amount determined by the terminal on the subframe ⁇ : (0 indicates the uplink transmit power adjustment amount of the terminal on the subframe z, indicating that the terminal receives the power adjustment for the subframe A transmitted by the base station.
  • the adjustment amount corresponding to the power adjustment signaling is an absolute adjustment amount
  • the power adjustment amount determining module is configured to determine, according to the adjustment amount corresponding to the power adjustment signaling and the subframe group information, to belong to different children in the following manner Uplink transmit power adjustment on the subframe of the frame group:
  • Determining an uplink transmit power adjustment amount on the subframe is an absolute adjustment corresponding to the power adjustment signaling, that is,
  • indicates the subframe index
  • N indicates the subframe group index
  • the number of subframe groups is greater than or equal to 2
  • the transmit power determining module is configured to calculate an uplink transmit power of the subframe according to the following formula:
  • P ⁇ k) 10 log w (M(k)) + P 0 + - PL + A w (k) + f N (k) [dBm]
  • ⁇ : indicates the subframe index and N indicates the subframe group index
  • the number of subframe groups is greater than or equal to 2
  • Indicates the system nominal power parameter "represents the path loss compensation factor
  • PL represents the estimated downlink path loss of the terminal
  • ⁇ ) represents the terminal transmission compensation amount
  • f N (k) represents The amount of uplink transmit power adjustment on the subframe ⁇ : determined by the terminal.
  • the power adjustment amount determining module is further configured to receive the subframe group information sent by the base station, and determine, according to the subframe group information, which subframe group the subframe belongs to, where the subframe group information includes: one or more The packet information of the uplink subframe in the radio frame, or the information of which subframe group the uplink subframe belongs to.
  • the power adjustment amount determining module is further configured to determine, according to whether the subframe group information sent by the base station is received, whether to trigger an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group; or The power adjustment amount determining module is further configured to determine, according to the enabling information sent by the base station, whether to trigger an uplink transmit power adjustment amount on the subframes that belong to different subframe groups.
  • the terminal further includes a control signaling receiving module, configured to receive multiple sets of uplink power control signaling that are sent by the base station and applied to different subframe groups, and each set of uplink power control signaling is applied to one subframe group;
  • a control signaling receiving module configured to receive multiple sets of uplink power control signaling that are sent by the base station and applied to different subframe groups, and each set of uplink power control signaling is applied to one subframe group;
  • the transmit power determining module is configured to determine, according to the uplink transmit power adjustment amount on the subframes belonging to different subframe groups determined by the power adjustment amount determining module, the uplink transmit power in the corresponding subframe according to the following manner:
  • the uplink transmit power adjustment amount determined by the power adjustment amount determining module is combined with the uplink power control signaling received by the control signaling receiving module to determine an uplink transmit power of the corresponding subframe.
  • each set of uplink power control signaling includes an uplink open loop power control parameter; and the transmit power determining module is configured to calculate an uplink transmit power of the subframe according to the following formula:
  • N represents a system nominal power parameter applied to the Nth subframe group, and represents a path loss compensation factor applied to the Nth subframe group, indicating a downlink path loss estimated by the terminal, and ⁇ indicates a terminal transmission compensation amount, ⁇ ) indicates the amount of uplink transmit power adjustment on the subframe ⁇ : determined by the terminal.
  • the embodiment of the invention further provides a base station for implementing uplink power control, which includes a subframe group information determining module and a sending module, where:
  • the subframe group information determining module is configured to determine subframe group information, where the subframe group information is used by the terminal to determine an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group;
  • the sending module is configured to send subframe group information to the terminal.
  • the subframe group includes at least a first subframe group and a second subframe group
  • the subframe group information determining module is configured to determine subframe group information in the following manner: determining that the base station is configured as A subframe in which an uplink transmission subframe is further configured to be an uplink transmission subframe by another base station whose distance from the base station is smaller than a preset value belongs to the first subframe group, and is determined to be configured as an uplink transmission subframe by the base station and is The subframes that are configured to be the downlink transmission subframes of the other base stations that are smaller than the preset value from the base station belong to the second subframe group; or, the subframe group information determining module determines that the interference of other cells is less than a preset threshold.
  • the uplink subframe belongs to the first subframe group
  • the subframe group information determining module determines that an uplink subframe that is interfered by other cells exceeding a preset threshold belongs to the second subframe group;
  • the subframe group information includes: packet information of an uplink subframe in one or more radio frames, or information of which subframe group an uplink subframe belongs to.
  • the subframe group information is further used by the terminal to determine whether to determine an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group.
  • the base station further includes an enabling information configuration module, configured to configure enabling information, where the enabling information is used by the terminal to determine whether to determine an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group;
  • an enabling information configuration module configured to configure enabling information, where the enabling information is used by the terminal to determine whether to determine an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group;
  • the sending module is further configured to send the enabling information to the terminal.
  • the base station further includes an uplink power control signaling configuration module, configured to configure multiple sets of uplink power control signaling applied to different subframe groups, and each set of uplink power control signaling is applied to one subframe group;
  • the sending module is further configured to send, to the terminal, multiple sets of uplink power control signaling applied to different subframe groups.
  • each set of uplink power control signaling includes an uplink open loop power control parameter
  • the uplink open loop power control parameter is used by the terminal to calculate the uplink transmit power of the terminal on the subframe, where the subframe is a subframe in the subframe group to which the uplink power control signaling is applied.
  • the method, the terminal, and the base station in this embodiment are used to adjust or determine the uplink transmit power of the terminal in subframes belonging to different subframe groups, so that the terminal performs uplink transmission with appropriate uplink transmit power, and ensures that the terminal is as far as possible.
  • the uplink subframes belonging to different subframe groups perform SINR requirements for uplink transmission, thereby ensuring uplink transmission performance of the terminal and the system.
  • FIG. 1 is a flowchart of processing performed by a terminal according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural diagram of an uplink power control system including a terminal and a base station according to Embodiment 1 and Embodiment 2 of the present invention
  • FIG. 3 is a flowchart of processing performed by a base station according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic diagram showing the TDD configuration and the uplink transmission power adjustment amount of the base station in the application examples 1-3 of the present invention.
  • This embodiment describes a process performed by a terminal in an uplink power control method. As shown in FIG. 1, the method includes the following steps:
  • Step 101 The terminal respectively determines uplink transmit power adjustment amounts on subframes belonging to different subframe groups.
  • the foregoing subframe group includes at least a first subframe group and a second subframe group, where the first subframe group and the second subframe group may be divided into the following manners: the first subframe group is configured by the current base station as The other base stations that transmit the subframes in the uplink and are separated from the current base station by a preset value are also configured as the subframes of the uplink transmission subframe, and the second subframe group is configured as the uplink transmission subframe by the current base station and is separated from the current base station by d.
  • the other subframes of the preset value are configured as subframes of the downlink transmission subframe; or the first subframe group includes uplink subframes that are less than the preset threshold by other cells, and the second subframe group includes interferences that are exceeded by other cells.
  • the terminal receives the subframe group information that is sent by the base station, and the subframe group information includes: packet information of an uplink subframe in one or more radio frames, or information of which subframe group the uplink subframe belongs to;
  • the terminal 4 determines which subframe group the current subframe belongs to based on the subframe group information.
  • the determining, by the terminal, the uplink transmit power adjustment amount on the subframes that belong to the different subframe groups includes: the terminal receiving the power adjustment signaling sent by the base station, determining, according to the adjustment amount corresponding to the power adjustment signaling, and the subframe group information, determining that the subframe belongs to a different subframe.
  • the amount of uplink transmit power adjustment on the subframe of the group includes: the terminal receiving the power adjustment signaling sent by the base station, determining, according to the adjustment amount corresponding to the power adjustment signaling, and the subframe group information, determining that the subframe belongs to a different subframe. The amount of uplink transmit power adjustment on the subframe of the group;
  • the power adjustment signaling sent by the base station includes an uplink transmission power control (TPC) command
  • the adjustment amount corresponding to the power adjustment signaling includes an accumulated adjustment amount or an absolute adjustment amount
  • the terminal determines, according to the adjustment amount corresponding to the power adjustment signaling and the subframe group information, an operation of determining an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group.
  • the terminal determines that the uplink transmit power adjustment amount on the current subframe is: the uplink transmit power adjustment amount of the terminal on the subframe that belongs to the same subframe group of the current subframe and the current subframe, and the cumulative corresponding to the power adjustment signaling
  • the sum of the adjustments, ie: f N (k) f N (i) + S
  • the current subframe index is represented, N is a subframe group index, the number of subframe groups is greater than or equal to 2, and the current subframe ⁇ : belongs to the Nth subframe group, indicating that the previous subframe of the current subframe k belongs to the Nth subframe group
  • the subframe index indicates the uplink transmit power adjustment amount determined by the terminal on the current subframe ⁇ :, and f N ⁇ i indicates the uplink transmit power adjustment amount of the terminal on the subframe I, indicating that the terminal receives the base station for the current
  • the terminal adjusts according to the power
  • the operations of determining the uplink transmit power adjustment amount on the subframes belonging to different subframe groups by the adjustment amount corresponding to the entire signaling and the subframe group information include:
  • the terminal determines that the uplink transmit power adjustment amount on the current subframe is an absolute adjustment amount corresponding to the power adjustment signaling, that is,
  • the current subframe index is represented, N is a subframe group index, the number of subframe groups is greater than or equal to 2, and the current subframe ⁇ : belongs to the Nth subframe group, indicating the uplink transmit power determined by the terminal in the current subframe ⁇ :
  • the adjustment amount indicates that the terminal receives the absolute adjustment amount corresponding to the power adjustment signaling sent by the base station for the current subframe ⁇ :.
  • the terminal determines, according to whether the subframe group information sent by the base station is received, whether to perform the step of determining the uplink transmit power adjustment amount on the subframes belonging to different subframe groups, or the terminal according to the received base station. Sending the enable information to determine whether to perform the step of determining the uplink transmit power adjustment amount on the subframes belonging to different subframe groups. For example, if the enable information takes the value "1", the terminal needs to determine that it belongs to a different subframe. The uplink transmit power adjustment amount on the subframe of the group. If the value of the enable information is not ' ⁇ ', the terminal does not need to determine the uplink transmit power adjustment amount on the subframes belonging to different subframe groups;
  • the determining whether the terminal determines the uplink transmit power adjustment amount on the subframes belonging to different subframe groups refers to whether the subframe group information is considered when the terminal determines the uplink transmit power adjustment amount on the subframe.
  • Step 102 The terminal determines, according to the determined uplink transmit power adjustment amount on the subframes belonging to different subframe groups, the uplink transmit power on the corresponding subframe.
  • the terminal determines the uplink transmit power in the current subframe according to the following formula:
  • P(k) 10 log w (M(k)) + P 0 + - PL + A w (k) + f N (k) [dBm]
  • N represents the subframe group index
  • the number of subframe groups is greater than or equal to 2
  • the terminal further receives the base station before determining the uplink transmit power.
  • Multiple sets of uplink power control signaling applied to different subframe groups each set of uplink power control signaling is applied to one subframe group; the terminal combines the received uplink power control signaling according to the determined uplink transmit power adjustment amount Determining an uplink transmit power of the corresponding subframe, where each set of uplink power control signaling includes an uplink open loop power control parameter, where the uplink open loop power control parameter is used by the terminal to calculate an uplink transmit power of the terminal on the subframe, where The subframe is a subframe in a subframe group to which the uplink power control signaling is applied;
  • the operation of determining, by the terminal according to the uplink transmit power adjustment amount and the uplink power control signaling, the uplink transmit power of the corresponding subframe includes:
  • the uplink transmit power of the subframe is calculated by using the uplink open loop power control parameter in the uplink power control signaling applied to the subframe group to which the subframe belongs, and the determined uplink power is used.
  • the uplink transmit power adjustment amount of the terminal on the subframe adjusts the calculated uplink transmit power, that is,
  • N denotes a system nominal power parameter applied to the Nth subframe group
  • path loss compensation factor applied to the Nth subframe group
  • PL denotes a downlink path loss estimated by the terminal
  • ⁇ ) denotes a terminal transmission compensation amount.
  • ⁇ ) indicates the amount of uplink transmit power adjustment determined by the terminal on the current subframe ⁇ :.
  • the terminal that implements the foregoing uplink power control method includes a power adjustment amount determining module 201 and a transmit power determining module 202, where:
  • the power adjustment amount determining module 201 is configured to determine an uplink transmit power adjustment amount on a subframe that belongs to different subframe groups;
  • the transmit power determining module 202 is configured to determine an uplink transmit power on the corresponding subframe according to an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group determined by the power adjustment amount determining module.
  • the division of the subframe group is described above, and will not be described here.
  • the power adjustment amount determining module 201 determines the uplink transmit power adjustment amount on the subframes belonging to different subframe groups, and how the transmit power determining module 202 determines the uplink transmit power of the corresponding subframe, as described above, and details are not described herein again. .
  • the power adjustment amount determining module 201 is further configured to receive the subframe group information sent by the base station, and determine, according to the subframe group information, which subframe group the subframe belongs to, where the subframe group information includes: uplink in one or more radio frames The grouping information of the subframe, or the information of which subframe group the uplink subframe belongs to.
  • the power adjustment amount determining module 201 is further configured to determine, according to whether the subframe group information sent by the base station is received, whether to trigger an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group; or Determining whether to trigger an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group is determined according to the enable information sent by the base station.
  • the terminal further includes a control signaling receiving module 203, configured to receive multiple sets of uplink power control signaling applied by the base station to different subframe groups, and each set of uplink power control signaling is applied to one subframe.
  • the transmit power determining module 202 determines the uplink transmit power of the corresponding subframe according to the uplink transmit power adjustment determined by the power adjustment amount determining module 201 in combination with the uplink power control signaling received by the control signaling receiving module 203;
  • each set of uplink power control signaling includes an uplink open loop power control parameter, and the uplink open loop power control parameter is used by the transmit power determining module 202 to calculate an uplink transmit power of the terminal in a subframe, where the subframe is a subframe in a subframe group to which the uplink power control signaling is applied;
  • the transmit power determining module 202 determines the uplink transmit power of the corresponding subframe according to the uplink transmit power adjustment determined by the power adjustment amount determining module 201 in combination with the uplink power control signaling received by the control signaling receiving module 203. Operation, see above description, will not be repeated here.
  • This embodiment describes a process performed by a base station in an uplink power control method. As shown in FIG. 3, the method includes the following steps:
  • Step 301 The base station determines subframe group information.
  • the foregoing subframe group information is used by the terminal to determine an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group;
  • the foregoing subframe group includes at least a first subframe group and a second subframe group
  • the base station may determine the first subframe group and the second subframe group in the following manner: the base station determines that the base station is configured as an uplink transmission sub- And the other base stations whose distances from the base station are smaller than the preset value are also configured as subframes of the uplink transmission subframe belonging to the first subframe group, and the base station determines that the base station is configured as an uplink transmission subframe and is The subframes that are configured to be the downlink transmission subframes of the other base stations that are smaller than the preset value from the base station belong to the second subframe group; or, the base station determines that the uplink subframes that are interfered by other cells less than the preset threshold belong to the The first subframe group, where the base station determines that an uplink subframe that is interfered by other cells exceeding a preset threshold belongs to the second subframe group;
  • Step 302 The base station sends subframe group information to the terminal.
  • the subframe group information may be packet information of an uplink subframe in one or more radio frames, or information of which subframe group an uplink subframe belongs to.
  • the subframe group information is further used by the terminal to determine whether to determine an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group.
  • the base station further configures the enabling information, and sends the enabling information to the terminal.
  • the enabling information is used by the terminal to determine whether to determine the uplink transmit power adjustment amount on the subframes belonging to different subframe groups.
  • the base station configures the enabling information by using RRC signaling and sends the information to the terminal. If the enabling information is configured to be "1", the terminal needs to determine the uplink transmit power adjustment amount on the subframes belonging to different subframe groups, if The enable information configuration is not "1", and the terminal does not need to determine the uplink transmit power adjustment amount on the subframes belonging to different subframe groups.
  • the base station further configures multiple sets of uplink power control signaling applied to different subframe groups, and each set of uplink power control signaling is applied to one subframe group, and is sent to the terminal to be applied to different subframe groups. Multiple sets of uplink power control signaling;
  • the uplink power control signaling includes an uplink open loop power control parameter, where the uplink open loop power control parameter is used by the terminal to calculate an uplink transmit power of the terminal in the subframe, where the subframe is the uplink power control The subframe in the subframe group to which the signaling is applied.
  • the base station implementing the foregoing uplink power control method includes a subframe group information determining module 204 and a sending module 205, where:
  • the subframe group information determining module 204 is configured to determine subframe group information
  • the sending module 205 is configured to send subframe group information to the terminal.
  • the above-mentioned subframe group information is used for the terminal to determine the uplink transmit power adjustment amount on the subframes belonging to the different subframe groups; the division manner and content of the subframe group are described above, and details are not described herein again.
  • the subframe group information is further used by the terminal to determine whether to determine an uplink transmit power adjustment amount on a subframe that belongs to a different subframe group.
  • the base station further includes an enabling information configuration module 206;
  • the enabling information configuration module 206 is configured to configure the enabling information, and the sending module 205 is further configured to send the enabling information to the terminal, where the enabling information is used by the terminal to determine whether the subframes belonging to different subframe groups are determined. Upward transmit power adjustment on.
  • the base station further includes an uplink power control signaling configuration module 207, configured to configure multiple sets of uplink power control signaling applied to different subframe groups, and each set of uplink power control signaling is applied to one sub- a frame group, the sending module 205 is further configured to send, to the terminal, multiple sets of uplink power control signaling applied to different subframe groups;
  • the uplink power control signaling includes an uplink open loop power control parameter, where the uplink open loop power control parameter is used by the terminal to calculate an uplink transmit power of the terminal in the subframe, where the subframe is the uplink power control The subframe in the subframe group to which the signaling is applied.
  • the uplink power control method of the embodiment of the present invention is specifically described below for a specific application example.
  • the base station uses the TDD uplink and downlink configuration 0 in Table 1.
  • the base station determines that the subframes 2, 7 belong to the first subframe group, and the subframes 3, 4, 8, and 9 belong to the second subframe group, and the base station divides the first subframe group and the second manner in the following manner.
  • Subframe group :
  • the base station acquires TDD uplink and downlink configuration information of other base stations whose distance is less than a preset value, and determines In the TDD uplink and downlink configuration of the base stations, the subframes 2 and 7 are all uplink transmission subframes, and the subframes 3, 4, 8, and 9 all have one or a few base stations configured as downlink transmission subframes. Then, the base station determines that 2, 7 belong to the first subframe group, and the subframes 3, 4, 8, and 9 belong to the second subframe group; wherein, the preset value may be configured by the base station or configured by the system;
  • the base station obtains interference information received on each uplink subframe, and determines that the interference received on the subframes 2 and 7 is less than a preset threshold, and the interference received on the subframes 3, 4, 8, and 9 exceeds a preset.
  • the threshold determines that the base station determines that 2, 7 belong to the first subframe group, and the subframes 3, 4, 8, and 9 belong to the second subframe group; wherein the preset threshold may be configured by the base station or configured by the system.
  • the base station sends the subframe group information to the terminal, and the terminal receives the subframe group information sent by the base station. After receiving the subframe group information sent by the base station, the terminal determines that it needs to determine the uplink transmit power adjustment amount on the subframes belonging to different subframe groups;
  • the base station is further configured with the enabling information (for example, configured by using RRC signaling), and sends the enabling information to the terminal; the terminal receives the enabling information sent by the base station, and determines whether it is necessary to determine the subframes that belong to different subframe groups.
  • the uplink transmit power adjustment amount for example, if the enable information takes a value of "1", the terminal needs to determine the uplink transmit power adjustment amount on the subframes belonging to different subframe groups, if the enable information is not "1", the terminal does not need to determine the uplink transmit power adjustment amount on the subframes belonging to different subframe groups;
  • the determining whether the terminal determines the uplink transmit power adjustment amount on the subframes belonging to different subframe groups refers to whether the subframe group information is considered when the terminal determines the uplink transmit power adjustment amount on the subframe.
  • the terminal determines, according to the received subframe group information, which subframe group the subframe belongs to.
  • the terminal determines the uplink transmit power adjustment amount on the subframes that belong to different subframe groups, and the specific operations include: the terminal receives the power adjustment signaling sent by the base station, and determines that the adjustment amount corresponding to the power adjustment signaling and the subframe group information are different. The amount of uplink transmit power adjustment on the subframe of the subframe group;
  • the power adjustment signaling refers to an uplink transmission power control (TPC) command, and the corresponding adjustment amount includes an accumulated adjustment amount or an absolute adjustment amount;
  • TPC uplink transmission power control
  • the specific operation of the terminal determining the uplink transmit power adjustment amount on the subframes belonging to different subframe groups according to the adjustment amount corresponding to the TPC command and the subframe group information is: Taking sub-frame 2 as an example, sub-frame 2 belongs to the first sub-frame group, and the terminal determines that the uplink transmit power adjustment amount on sub-frame 2 is: the sub-frame in the sub-frame 2 and the sub-frame 2 belong to the same sub-frame group.
  • the sum of the uplink transmit power adjustment amount on frame 7 and the cumulative adjustment amount corresponding to the TPC command namely:
  • the cumulative adjustment amount corresponding to the TPC command, the subscript 1 indicates the subframe group index, that is, the subframes 2, 7 belong to the first subframe group;
  • subframe 3 belongs to the second subframe group, and the terminal determines that the uplink transmit power adjustment amount on subframe 3 is: the subframe belongs to the same subframe group in the previous subframe 3 and subframe 3
  • / 2 (3) represents the uplink transmit power adjustment amount determined by the terminal on the subframe 3
  • / 2 (9) represents the uplink transmit power adjustment amount of the terminal on the subframe 9, indicating that the terminal receives the base station for transmitting
  • the cumulative adjustment amount corresponding to the TPC command of the subframe 3 indicates the subframe group index, that is, the subframes 3 and 9 belong to the second subframe group; if the adjustment amount corresponding to the TPC command is an absolute adjustment amount, the terminal according to the TPC
  • the operation corresponding to the adjustment amount and the subframe group information of the command to determine the uplink transmit power adjustment amount on the subframes belonging to different subframe groups includes:
  • subframe 2 belongs to the first subframe group, and the terminal determines that the uplink transmit power adjustment amount on subframe 2 is the absolute adjustment amount corresponding to the TPC command, that is,
  • subframe 2 indicates an uplink transmit power adjustment amount determined by the terminal on the subframe 2, indicating that the terminal receives the absolute adjustment amount corresponding to the TPC command for the subframe 2 transmitted by the base station, and the subscript 1 indicates the subframe group index. That is, subframe 2 belongs to the first subframe group;
  • subframe 3 belongs to the second subframe group, and the terminal determines that the uplink transmit power adjustment amount on subframe 3 is the absolute adjustment amount corresponding to the TPC command, that is,
  • / 2 (3) represents the uplink transmit power adjustment amount determined by the terminal on the subframe 3, indicating that the terminal receives the absolute adjustment amount corresponding to the TPC command for the subframe 3 transmitted by the base station, and the subscript 2 indicates the subframe group.
  • the terminal determines, according to the determined uplink transmit power adjustment amount on the subframes belonging to different subframe groups, the uplink transmit power on the corresponding subframe;
  • subframe 2 As an example, according to 3GPP TS 36.213, for the physical uplink shared channel, the terminal determines that its uplink transmit power on subframe 2 is:
  • P(2) represents the uplink transmit power of the terminal on subframe 2
  • M(2) represents the transmission resource bandwidth of the terminal on subframe 2
  • P. represents the system nominal power parameter, represents the path loss compensation factor, represents the estimated downlink path loss of the terminal
  • a (2) represents the transmission compensation amount of the terminal on subframe 2
  • (2) represents the subframe determined by the terminal.
  • the uplink transmit power adjustment amount on 2 the subscript 1 indicates the subframe group index, that is, the subframe 2 belongs to the first subframe group;
  • subframe 3 As an example, according to 3GPP TS 36.213, for the physical uplink shared channel, the terminal determines that its uplink transmit power on subframe 3 is:
  • P(3) represents the uplink transmit power of the terminal on subframe 3
  • M(3) represents the transmission resource bandwidth of the terminal on subframe 3
  • P. Indicates the system nominal power parameter, "represents the path loss compensation factor, PL represents the downlink path loss estimated by the terminal, A (3) represents the transmission compensation amount of the terminal on subframe 3, / 2 (3) represents the terminal determines The uplink transmit power adjustment amount on the subframe 3, the subscript 2 indicates the subframe group index, that is, the subframe 3 belongs to the second subframe group.
  • the base station uses the TDD uplink and downlink configuration 0 in Table 1.
  • the base station determines that the subframes 2, 7 belong to the first subframe group, and the subframe
  • the base station sends the subframe group information to the terminal, and the terminal receives the subframe group information sent by the base station.
  • the terminal determines whether to determine the uplink transmit power adjustment amount on the subframes belonging to different subframe groups, as in Application Example 1.
  • the terminal determines, according to the received subframe group information, which subframe group the subframe belongs to.
  • the terminal determines the uplink transmit power adjustment amount on the subframes belonging to different subframe groups, and the specific operation process is the same as the application example 1.
  • the base station is further configured with multiple sets of uplink power control signaling applied to different subframe groups, that is, the base station configures two sets of uplink power control signaling, which are respectively applied to the first subframe group and the second subframe.
  • the base station sends two sets of uplink power control signaling to the terminal.
  • the two sets of uplink power control signalings include uplink open loop power control parameters, respectively, for the terminal to calculate the uplink transmit power on the subframes belonging to the first subframe group and the subframes belonging to the second subframe group. Uplink transmit power.
  • the terminal receives two sets of uplink power control signaling sent by the base station and applied to the first subframe group and the second subframe group respectively.
  • the terminal determines the uplink transmit power of the terminal in the corresponding subframe according to the determined uplink transmit power adjustment amount and the received uplink power control signaling, and the specific operations include:
  • the uplink transmit power of the subframe is calculated by using the uplink open loop power control parameter in the uplink power control signaling applied to the subframe group to which the subframe belongs, and the determined uplink power is used. Adjusting the calculated uplink transmit power by the uplink transmit power adjustment amount of the terminal on the subframe;
  • subframe 2 As an example, according to 3GPP TS 36.213, for the physical uplink shared channel, the terminal determines that its uplink transmit power on subframe 2 is:
  • subframe 3 As an example, according to 3GPP TS 36.213, for the physical uplink shared channel, the terminal determines that its uplink transmit power on subframe 3 is:
  • P(3) represents the uplink transmit power of the terminal on subframe 3
  • M(3) represents the transmission resource bandwidth of the terminal on subframe 3
  • ⁇ 2 represents the system nominal power parameter applied to the second subframe group.
  • 2 indicates the path loss compensation factor applied to the second subframe group, indicating the downlink path loss estimated by the terminal
  • a w (3) indicates the transmission compensation amount of the terminal on the subframe 3
  • / 2 (3) indicates The subframe determined by the terminal
  • the uplink transmit power adjustment amount on 3 indicates the subframe group index, that is, the subframe 3 belongs to the second subframe group, 2 and 2 is the set of uplink power control signaling applied to the second subframe group.
  • Uplink open loop power control parameters are the uplink open loop power control parameters.
  • the base station uses the TDD uplink and downlink configuration 0 in Table 1.
  • the base station determines that the subframes 2, 7 belong to the first subframe group, and the subframe
  • the base station sends the subframe group information to the terminal, and the terminal receives the subframe group information sent by the base station.
  • the terminal determines whether to determine the uplink transmit power adjustment amount on the subframes belonging to different subframe groups, as in Application Example 1.
  • the terminal determines, according to the received subframe group information, which subframe group the subframe belongs to.
  • the terminal determines the uplink transmit power adjustment amount on the subframes that belong to different subframe groups, and the specific operations include: the terminal receives the power adjustment signaling sent by the base station, and determines that the adjustment amount corresponding to the power adjustment signaling and the subframe group information are different. The amount of uplink transmit power adjustment on the subframe of the subframe group;
  • the power adjustment signaling refers to an uplink transmission power control (TPC) command, and the corresponding adjustment amount includes an accumulated adjustment amount or an absolute adjustment amount;
  • TPC uplink transmission power control
  • the base station configures a TPC command for each group of uplink subframes and sends it to the terminal in a period of 10 ms (the length of time of the radio frame).
  • the base station configures a TPC command for the first uplink subframe that belongs to the different subframe group in one radio frame and sends the TPC command to the terminal, that is, the base station configures the TPC command for the subframe 2 belonging to the first subframe group in one radio frame.
  • the base station configures a TPC command for the subframe 3 belonging to the second subframe group in one radio frame and sends the TPC command to the terminal; for other uplink subframes, the base station is no longer configured to send the TPC command; then, if the TPC command corresponds
  • the adjustment amount is the cumulative adjustment amount. Taking the subframes 2 and 7 belonging to the first subframe group as an example, the terminal determines the uplink transmission on the subframe belonging to the first subframe group according to the adjustment amount corresponding to the TPC command and the subframe group information.
  • the specific operation of the power adjustment amount is:
  • the terminal determines that the uplink transmit power adjustment amount on the subframe 2 is: the uplink transmit power adjustment amount of the terminal on the subframe 7 of the same subframe group that belongs to the same subframe group of the previous subframe 2 and the cumulative adjustment amount corresponding to the TPC command. And the sum, namely:
  • the cumulative adjustment amount corresponding to the TPC command, the subscript 1 indicates the subframe group index, that is, the subframes 2, 7 belong to the first subframe group;
  • the terminal determines that the cumulative adjustment amount corresponding to the TPC command for the subframe 7 is 0 dB, and the terminal determines that the uplink transmit power adjustment amount on the subframe 7 is:
  • the sum of the uplink transmit power adjustment amount on the subframe 2 of the same sub-frame group and the cumulative adjustment amount corresponding to the TPC command, the previous one of the frame 7 and the sub-frame 7 are:
  • (7) represents the uplink transmit power adjustment amount determined by the terminal on the subframe 7
  • (2) represents the uplink transmit power adjustment amount of the terminal on the subframe 2
  • 0 represents the TPC command assumed by the terminal for the subframe 7.
  • the corresponding cumulative adjustment amount is OdB, and the subscript 1 indicates the subframe group index, that is, the subframes 2 and 7 belong to the first subframe group;
  • the adjustment amount corresponding to the TPC command is an absolute adjustment amount
  • the specific operation of determining, by the terminal according to the adjustment amount corresponding to the TPC command and the subframe group information, the uplink transmit power adjustment amount on the subframe belonging to the first subframe group is:
  • the terminal determines that the uplink transmit power adjustment amount on the subframe 2 is an absolute adjustment corresponding to the TPC command.
  • Quantity ie:
  • subframe 2 indicates an uplink transmit power adjustment amount determined by the terminal on the subframe 2, indicating that the terminal receives the absolute adjustment amount corresponding to the TPC command for the subframe 2 transmitted by the base station, and the subscript 1 indicates the subframe group index. That is, subframe 2 belongs to the first subframe group;
  • ( 7 ) represents the uplink transmit power adjustment amount determined by the terminal on the subframe 7
  • (2) represents the uplink transmit power adjustment amount of the terminal on the subframe 2
  • the subscript 1 represents the subframe group index, that is, the subframe. 2, 7 belong to the first subframe group.
  • the terminal determines the uplink transmit power on the corresponding subframe according to the determined uplink transmit power adjustment amount on the subframes belonging to different subframe groups, as in Application Example 1.
  • the embodiments of the present invention respectively adjust or determine that a terminal is on a subframe belonging to a different subframe group.
  • the terminal performs the SINR requirement for uplink transmission in the uplink subframes belonging to different subframe groups, thereby ensuring the uplink transmission performance of the terminal and the system.

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Abstract

本发明实施例公开了一种上行功率控制方法、终端及基站,能够分别调整或确定终端在属于不同子帧组的子帧上的上行发射功率。所述方法包括:基站确定子帧组信息,子帧组信息用于供终端确定属于不同子帧组的子帧上的上行发射功率调整量;基站向终端发送子帧组信息。终端确定属于不同子帧组的子帧上的上行发射功率调整量;根据所确定的属于不同子帧组的子帧上的上行发射功率调整量确定相应子帧上的上行发射功率。

Description

一种上行功率控制方法、 终端及基站 技术领域
本发明涉及通信领域, 具体涉及一种上行功率控制方法、 终端及基站。
背景技术
长期演进( Long Term Evolution,简称为 LTE )***时分双工( Time Division Duplex, 简称为 TDD )模式的上下行配置方式如表 1所示, 其中, D表示子 帧用于下行传输, U表示子帧用于上行传输, S表示特殊子帧且包含三个特 殊时隙, 即下行导频时隙( Downlink Pilot Time Slot, 简称为 DwPTS, 用于下 行传输)、保护间隔( Guard Period, 简称为 GP )和上行导频时隙( Uplink Pilot Time Slot , 简称为 UpPTS , 用于上行传输) 。 在目前的实际***中, 上下行 配置索引会通过广播消息通知给终端。
表 1 上下行配置示意表
Figure imgf000003_0001
根据表 1 , 在 LTE-TDD***中, 当小区 TDD上下行配置方式相同时, 终端进行上行传输受到其他小区的终端上行传输产生的上行干扰, 而当小区 TDD上下行配置方式不同时, 终端进行上行传输可能受到其他上行小区终端 进行上行传输产生的上行干扰, 也可能受到其他下行小区基站进行下行传输 产生的下行干扰。 与终端发射功率相比, 基站发射功率较高, 下行小区基站 进行下行传输产生的下行干扰相对也较高, 会导致上行传输终端的性能严重 恶化, 甚至造成其无法进行通信。
目前, LTE终端进行上行传输时, 根据基站配置的上行开环功率控制参 数计算上行发射功率, 并根据基站配置的上行传输功率控制( Transmit Power Control, 简称 TPC )命令调整上行发射功率。 其中, 基站通过 RRC ( Radio Resource Control, 无线资源控制 )信令把上行开环功率控制参数发送给终端; 基站通过物理下行控制信道 ( Physical Downlink Control Channel , 简称 PDCCH ) 中的下行控制信息 (Downlink Control Information, 简称 DCI )把 TPC命令发送给终端, 终端对 DCI进行解码来获取 TPC命令对应的调整量。
当某个小区进行上行传输, 且该小区基站周围一定区域内的其他基站也 为上行传输时, 该小区中的终端进行上行传输受到的干扰相对较小并且变化 也较小, 终端按照相关技术中的功率调整机制根据基站配置的 TPC命令调整 上行发射功率可以使得终端上行传输的信号与干扰噪声比 ( Signal to Interference and Noise Ratio, 简称 SINR )保持在一定水平, 满足其上行传输 需求。 而当该小区进行上行传输, 且该小区基站周围一定区域内存在其他基 站进行下行传输时, 该小区中的终端进行上行传输受到的干扰会明显变大并 且变化也较大, 如果终端继续沿用相关技术中的功率调整机制根据基站配置 的 TPC命令来调整上行发射功率, 则无法保证其上行传输的 SINR需求, 从 而影响终端及***的上行传输性能。 也就是说, 终端使用相关技术中的功率 调整机制无法保证其在上行子帧上调整上行发射功率为一个较合适的功率 值, 从而无法保障终端及***的上行传输性能。 发明内容
本发明实施例提供一种上行功率控制方法、 终端及基站, 能够分别调整 或确定终端在属于不同子帧组的子帧上的上行发射功率。
本发明实施例提供的一种上行功率控制方法, 包括:
终端分别确定属于不同子帧组的子帧上的上行发射功率调整量; 所述终端根据所确定的属于不同子帧组的子帧上的上行发射功率调整量 确定相应子帧上的上行发射功率。
较佳地, 所述子帧组至少包括第一子帧组和第二子帧组, 其中: 所述第 一子帧组包括被基站配置为上行传输子帧且被距基站距离 、于预设值的其他 基站也配置为上行传输子帧的子帧, 所述第二子帧组包括被基站配置为上行 传输子帧且被距基站距离小于预设值的其他基站将其配置为下行传输子帧的 子帧; 或者, 所述第一子帧组包括受到其他小区干扰小于预设门限的上行子 帧, 所述第二子帧组包括受到其他 d、区干扰超过预设门限的上行子帧。
较佳地,所述终端确定属于不同子帧组的子帧上的上行发射功率调整量, 包括:
终端接收基站发送的功率调整信令, 根据所述功率调整信令对应的调整 量以及子帧组信息确定属于不同子帧组的子帧上的上行发射功率调整量; 所述基站发送的功率调整信令包括上行传输功率控制 (TPC )命令。 较佳地, 所述功率调整信令对应的调整量为累计调整量, 所述终端根据 功率调整信令对应的调整量以及子帧组信息确定属于不同子帧组的子帧上的 上行发射功率调整量, 包括:
所述终端确定子帧上的上行发射功率调整量为: 终端在子帧的前一个与 子帧属于同一个子帧组的子帧上的上行发射功率调整量与所述功率调整信令 对应的累计调整量之和, 即:
fN(k) = fN(i) + S 岡
其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2 , 子 帧^:属于第 N子帧组, ,表示子帧 的前一个属于第 N子帧组的子帧索引, 表示终端确定的在子帧^:上的上行发射功率调整量, (0表示终端在子 帧 z上的上行发射功率调整量, 表示终端接收基站发送的用于子帧 A的功率 调整信令对应的累计调整量。
较佳地, 所述功率调整信令对应的调整量为绝对调整量, 所述终端根据 功率调整信令对应的调整量以及子帧组信息确定属于不同子帧组的子帧上的 上行发射功率调整量, 包括:
所述终端确定子帧上的上行发射功率调整量为所述功率调整信令对应的 绝对调整量, 即:
、二 δ 岡
其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2 , 子 帧^:属于第 N子帧组, 表示终端确定的在子帧^:上的上行发射功率调整 量, 表示终端接收基站发送的用于子帧 k的功率调整信令对应的绝对调整 量。
较佳地, 所述终端根据所确定的属于不同子帧组的子帧上的上行发射功 率调整量确定相应子帧上的上行发射功率, 包括:
所述终端根据以下公式计算子帧上的上行发射功率:
P(k) = 10 \ogw(M(k)) + P0 + - PL + Aw(k) + fN (k) [dBm] 其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, 表示终端在子帧^:上的上行发射功率, 表示 终端传输资源带宽, P。表示***标称功率参数, 表示路径损耗补偿因子, PL 表示终端估计的下行链路路径损耗, Δ^Α)表示终端传输补偿量, Λ^)表示 终端所确定的在子帧^:上的上行发射功率调整量。
较佳地, 所述方法还包括: 所述终端接收基站发送的子帧组信息, 根据 子帧组信息确定子帧属于哪一个子帧组, 其中, 子帧组信息包括: 一个或多 个无线帧中的上行子帧的分组信息, 或者, 一个上行子帧属于哪一个子帧组 的信息。
较佳地, 所述方法还包括: 所述终端根据是否收到基站发送的子帧组信 息来判断是否执行确定属于不同子帧组的子帧上的上行发射功率调整量的步 骤, 或者, 所述终端根据基站发送的使能信息来判断是否执行确定属于不同 子帧组的子帧上的上行发射功率调整量的步骤。
较佳地, 在确定上行发射功率之前, 所述方法还包括: 终端接收基站发 送的应用于不同子帧组的多套上行功率控制信令, 每套上行功率控制信令应 用于一个子帧组;
所述终端根据所确定的属于不同子帧组的子帧上的上行发射功率调整量 确定相应子帧上的上行发射功率, 包括: 所述终端根据所确定的上行发射功 率调整量结合所接收到的上行功率控制信令确定相应子帧的上行发射功率。
较佳地, 所述每套上行功率控制信令包括上行开环功率控制参数; 所述终端根据所确定的上行发射功率调整量结合所接收到的上行功率控 制信令确定相应子帧的上行发射功率, 包括:
所述终端根据以下公式计算子帧的上行发射功率, 即:
P(k) = \ 0 logw (M (k)) + P0^ + aN - PL + ΔΤΡ (k) + fN (k) [dBm] 其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, 表示终端在子帧^:上的上行发射功率, 表示 终端传输资源带宽, ^^和 为应用于子帧所属子帧组的上行功率控制信令 中的上行开环功率控制参数, 其中 P。 N表示应用于第 N子帧组的***标称功 率参数, 表示应用于第 N子帧组的路径损耗补偿因子, 表示终端估计的 下行链路路径损耗, Δ^Α)表示终端传输补偿量, Λ^)表示终端所确定的在 子帧^:上的上行发射功率调整量。
本发明实施例还另提供了一种上行功率控制方法, 包括:
基站确定子帧组信息, 所述子帧组信息用于供终端确定属于不同子帧组 的子帧上的上行发射功率调整量;
所述基站向终端发送子帧组信息。
较佳地, 所述子帧组至少包括第一子帧组和第二子帧组, 所述基站确定 子帧组信息, 包括: 所述基站确定被所述基站配置为上行传输子帧且被距所 述基站距离小于预设值的其他基站也配置为上行传输子帧的子帧属于所述第 一子帧组, 所述基站确定被所述基站配置为上行传输子帧且被距所述基站距 离小于预设值的其他基站将其配置为下行传输子帧的子帧属于所述第二子帧 组; 或者, 所述基站确定受到其他小区干扰小于预设门限的上行子帧属于所 述第一子帧组, 所述基站确定受到其他小区干扰超过预设门限的上行子帧属 于所述第二子帧组;
所述子帧组信息包括: 一个或多个无线帧中的上行子帧的分组信息, 或 者, 一个上行子帧属于哪一个子帧组的信息。
较佳地, 所述子帧组信息还用于供终端判断是否确定属于不同子帧组的 子帧上的上行发射功率调整量。
较佳地, 所述方法还包括: 所述基站配置使能信息, 向终端发送所述使 能信息; 所述使能信息用于供终端判断是否确定属于不同子帧组的子帧上的 上行发射功率调整量。
较佳地, 所述方法还包括: 所述基站配置应用于不同子帧组的多套上行 功率控制信令, 每套上行功率控制信令应用于一个子帧组; 所述基站向终端 发送应用于不同子帧组的多套上行功率控制信令。
较佳地, 所述每套上行功率控制信令包括上行开环功率控制参数, 所述 上行开环功率控制参数用于供终端计算该终端在子帧上的上行发射功率, 所 述子帧为所述上行功率控制信令所应用的子帧组中的子帧。
本发明实施例还提供了一种实现上行功率控制的终端, 包括功率调整量 确定模块和发射功率确定模块, 其中:
所述功率调整量确定模块, 设置为分别确定属于不同子帧组的子帧上的 上行发射功率调整量;
所述发射功率确定模块, 设置为根据所述功率调整量确定模块所确定的 属于不同子帧组的子帧上的上行发射功率调整量确定相应子帧上的上行发射 功率。
较佳地, 所述子帧组至少包括第一子帧组和第二子帧组, 其中: 所述第 一子帧组包括被基站配置为上行传输子帧且被距基站距离 、于预设值的其他 基站也配置为上行传输子帧的子帧, 所述第二子帧组包括被基站配置为上行 传输子帧且被距基站距离小于预设值的其他基站配置为下行传输子帧的子 帧; 或者, 所述第一子帧组包括受到其他小区干扰小于预设门限的上行子帧, 所述第二子帧组包括受到其他 d、区干扰超过预设门限的上行子帧。
较佳地, 所述功率调整量确定模块是设置为以如下方式确定属于不同子 帧组的子帧上的上行发射功率调整量:
接收基站发送的功率调整信令, 根据所述功率调整信令对应的调整量以 及子帧组信息确定属于不同子帧组的子帧上的上行发射功率调整量; 所述功 率调整信令包括上行传输功率控制 (TPC )命令。
较佳地, 所述功率调整信令对应的调整量为累计调整量; 所述功率调整 量确定模块是设置为以如下方式根据功率调整信令对应的调整量以及子帧组 信息确定属于不同子帧组的子帧上的上行发射功率调整量:
确定子帧上的上行发射功率调整量为: 终端在子帧的前一个与子帧属于 同一个子帧组的子帧上的上行发射功率调整量与所述功率调整信令对应的累 计调整量之和, 即:
fN(k) = fN(i) + S 岡
其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, ,表示子帧 的前一个属于第 N子帧组的子帧索引, 表示终端确定的在子帧^:上的上行发射功率调整量, (0表示终端在子 帧 z上的上行发射功率调整量, 表示终端接收基站发送的用于子帧 A的功率 调整信令对应的累计调整量。
较佳地, 所述功率调整信令对应的调整量为绝对调整量; 所述功率调整 量确定模块是设置为以如下方式根据功率调整信令对应的调整量以及子帧组 信息确定属于不同子帧组的子帧上的上行发射功率调整量:
确定子帧上的上行发射功率调整量为所述功率调整信令对应的绝对调整 量, 即:
、二 δ 岡
其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, 表示终端确定的在子帧^:上的上行发射功率调整 量, 表示终端接收基站发送的用于子帧 的功率调整信令对应的绝对调整 量。
较佳地, 所述发射功率确定模块是设置为根据以下公式计算子帧的上行 发射功率:
P{k) = 10 logw(M(k)) + P0 + - PL + Aw(k) + fN (k) [dBm] 其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, 表示终端在子帧^:上的上行发射功率, 表示 终端传输资源带宽, P。表示***标称功率参数, "表示路径损耗补偿因子, PL 表示终端估计的下行链路路径损耗, Δ^Α)表示终端传输补偿量, fN(k)表示 终端所确定的在子帧^:上的上行发射功率调整量。
较佳地,所述功率调整量确定模块还设置为接收基站发送的子帧组信息, 根据子帧组信息确定子帧属于哪一个子帧组, 其中, 子帧组信息包括: 一个 或多个无线帧中的上行子帧的分组信息, 或者, 一个上行子帧属于哪一个子 帧组的信息。
较佳地, 所述功率调整量确定模块还设置为根据是否收到基站发送的子 帧组信息来判断是否触发确定属于不同子帧组的子帧上的上行发射功率调整 量; 或者, 所述功率调整量确定模块还用于根据基站发送的使能信息来判断 是否触发确定属于不同子帧组的子帧上的上行发射功率调整量。
较佳地, 所述终端还包括控制信令接收模块, 设置为接收基站发送的应 用于不同子帧组的多套上行功率控制信令, 每套上行功率控制信令应用于一 个子帧组;
所述发射功率确定模块是设置为以如下方式根据所述功率调整量确定模 块所确定的属于不同子帧组的子帧上的上行发射功率调整量确定相应子帧上 的上行发射功率: 根据所述功率调整量确定模块确定的上行发射功率调整量 结合所述控制信令接收模块接收到的上行功率控制信令确定相应子帧的上行 发射功率。
较佳地, 所述每套上行功率控制信令包括上行开环功率控制参数; 所述发射功率确定模块是设置为根据以下公式计算子帧的上行发射功 率:
尸 W = 10 logl。 (M (k)) + P0^ + aN - PL + ΔΤΡ (k) + fN (k) [dBm] 其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, 表示终端在子帧^:上的上行发射功率, 表示 终端传输资源带宽, ^^和 为应用于子帧 ^:所属子帧组的上行功率控制信 令中的上行开环功率控制参数, 其中 P。N表示应用于第 N子帧组的***标称 功率参数, 表示应用于第 N子帧组的路径损耗补偿因子, 表示终端估计 的下行链路路径损耗, Δ^Α)表示终端传输补偿量, Λ^)表示终端所确定的 在子帧^:上的上行发射功率调整量。 本发明实施例还提供了一种实现上行功率控制的基站, 包括子帧组信息 确定模块和发送模块, 其中:
所述子帧组信息确定模块, 设置为确定子帧组信息, 所述子帧组信息用 于供终端确定属于不同子帧组的子帧上的上行发射功率调整量;
所述发送模块, 设置为向终端发送子帧组信息。
较佳地, 所述子帧组至少包括第一子帧组和第二子帧组, 所述子帧组信 息确定模块是设置为以如下方式确定子帧组信息: 确定被所述基站配置为上 行传输子帧且被距所述基站距离小于预设值的其他基站也配置为上行传输子 帧的子帧属于所述第一子帧组, 确定被所述基站配置为上行传输子帧且被距 所述基站距离小于预设值的其他基站配置为下行传输子帧的子帧属于所述第 二子帧组; 或者, 所述子帧组信息确定模块确定受到其他小区干扰小于预设 门限的上行子帧属于所述第一子帧组, 所述子帧组信息确定模块确定受到其 他小区干扰超过预设门限的上行子帧属于所述第二子帧组;
所述子帧组信息包括: 一个或多个无线帧中的上行子帧的分组信息, 或 者, 一个上行子帧属于哪一个子帧组的信息。
较佳地, 所述子帧组信息还用于供终端判断是否确定属于不同子帧组的 子帧上的上行发射功率调整量。
较佳地, 所述基站还包括使能信息配置模块, 设置为配置使能信息, 所 述使能信息用于供终端判断是否确定属于不同子帧组的子帧上的上行发射功 率调整量;
所述发送模块还设置为向终端发送所述使能信息。
较佳地, 所述基站还包括上行功率控制信令配置模块, 设置为配置应用 于不同子帧组的多套上行功率控制信令, 每套上行功率控制信令应用于一个 子帧组;
所述发送模块还设置为向终端发送应用于不同子帧组的多套上行功率控 制信令。
较佳地, 所述每套上行功率控制信令包括上行开环功率控制参数, 所述 上行开环功率控制参数用于供终端计算该终端在子帧上的上行发射功率, 所 述子帧为所述上行功率控制信令所应用的子帧组中的子帧。
釆用本实施例方法、 终端和基站, 通过分别调整或确定终端在属于不同 子帧组的子帧上的上行发射功率, 使得终端以合适的上行发射功率进行上行 传输,尽可能的保证终端在属于不同子帧组的上行子帧进行上行传输的 SINR 需求, 从而保证终端及***的上行传输性能。
附图概述
此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 附图中:
图 1为本发明实施例 1终端执行的处理流程图;
图 2为本发明实施例 1和实施例 2包括终端和基站的上行功率控制*** 的结构示意图;
图 3为本发明实施例 2基站执行的处理流程图;
图 4为本发明应用示例 1-3中基站的 TDD配置及上行发射功率调整量示 意图。
本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是, 在 不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互任意组合。
实施例 1
本实施例描述一种上行功率控制方法中终端执行的处理, 如图 1所示, 包括以下步骤:
步骤 101 , 终端分别确定属于不同子帧组的子帧上的上行发射功率调整 量; 上述子帧组至少包括第一子帧组和第二子帧组, 其中, 第一子帧组和第 二子帧组的划分可以釆用以下方式: 第一子帧组为被当前基站配置为上行传 输子帧且被距当前基站距离小于预设值的其他基站也配置为上行传输子帧的 子帧, 第二子帧组为被当前基站配置为上行传输子帧且被距当前基站距离 d、 于预设值的其他基站配置为下行传输子帧的子帧; 或者, 第一子帧组包括受 到其他小区干扰小于预设门限的上行子帧, 第二子帧组包括受到其他小区干 扰超过预设门限的上行子帧;
较佳地, 终端接收基站发送的子帧组信息, 子帧组信息包括: 一个或多 个无线帧中的上行子帧的分组信息, 或者, 一个上行子帧属于哪一个子帧组 的信息; 终端 4艮据子帧组信息确定当前子帧属于哪一个子帧组。
终端确定属于不同子帧组的子帧上的上行发射功率调整量, 包括: 终端 接收基站发送的功率调整信令, 根据该功率调整信令对应的调整量以及子帧 组信息确定属于不同子帧组的子帧上的上行发射功率调整量;
较佳地, 基站发送的功率调整信令包括上行传输功率控制 (TPC )命令, 该功率调整信令对应的调整量包括累计调整量或绝对调整量;
如果该功率调整信令对应的调整量为累计调整量, 则终端根据该功率调 整信令对应的调整量以及子帧组信息确定属于不同子帧组的子帧上的上行发 射功率调整量的操作包括:
终端确定当前子帧上的上行发射功率调整量为: 终端在当前子帧的前一 个与当前子帧属于同一个子帧组的子帧上的上行发射功率调整量与该功率调 整信令对应的累计调整量之和, 即: fN(k) = fN (i) + S 岡
其中, 表示当前子帧索引, N表示子帧组索引,子帧组数量大于等于 2, 当前子帧^:属于第 N子帧组, ,表示当前子帧 k的前一个属于第 N子帧组的子 帧索引, 表示终端确定的在当前子帧^:上的上行发射功率调整量, fN{i 表示终端在子帧 I上的上行发射功率调整量, 表示终端接收基站发送的用于 当前子帧 的功率调整信令对应的累计调整量;
如果该功率调整信令对应的调整量为绝对调整量, 则终端根据该功率调 整信令对应的调整量以及子帧组信息确定属于不同子帧组的子帧上的上行发 射功率调整量的操作包括:
终端确定当前子帧上的上行发射功率调整量为该功率调整信令对应的绝 对调整量, 即:
fN(k) = S [dB]
其中, 表示当前子帧索引, N表示子帧组索引,子帧组数量大于等于 2, 当前子帧^:属于第 N子帧组, 表示终端确定的在当前子帧^:上的上行发 射功率调整量, 表示终端接收基站发送的用于当前子帧^:的功率调整信令对 应的绝对调整量。
一个优选的实施例中, 终端根据是否收到基站发送的子帧组信息来判断 是否执行确定属于不同子帧组的子帧上的上行发射功率调整量的步骤,或者, 终端根据接收到的基站发送的使能信息来判断是否执行确定属于不同子帧组 的子帧上的上行发射功率调整量的步骤,例如,如果该使能信息取值为 "1" , 则终端需要确定属于不同子帧组的子帧上的上行发射功率调整量, 如果该使 能信息取值不为 'Τ' , 终端不需要确定属于不同子帧组的子帧上的上行发射 功率调整量;
其中, 终端是否确定属于不同子帧组的子帧上的上行发射功率调整量, 指的是, 终端确定子帧上的上行发射功率调整量时是否考虑子帧组信息。
步骤 102 , 终端根据所确定的属于不同子帧组的子帧上的上行发射功率 调整量确定相应子帧上的上行发射功率。
较佳地, 终端根据以下公式确定当前子帧上的上行发射功率:
P(k) = 10 logw (M(k)) + P0 + - PL + Aw (k) + fN (k) [dBm] 其中, 表示当前子帧索引, N表示子帧组索引,子帧组数量大于等于 2, 当前子帧^:属于第 N子帧组, 表示终端在当前子帧^:上的上行发射功率, 表示终端传输资源带宽, P。表示***标称功率参数, 表示路径损耗补 偿因子, 表示终端估计的下行链路路径损耗, Δ^Α)表示终端传输补偿量, fN (k)表示终端所确定的在当前子帧 ^:上的上行发射功率调整量。
一个优选的实施例中, 在确定上行发射功率之前, 终端还接收基站发送 的应用于不同子帧组的多套上行功率控制信令, 每套上行功率控制信令应用 于一个子帧组; 终端根据所确定的上行发射功率调整量结合所接收到的上行 功率控制信令确定相应子帧的上行发射功率; 其中, 每套上行功率控制信令包括上行开环功率控制参数, 该上行开环 功率控制参数用于供终端计算该终端在子帧上的上行发射功率, 该子帧为所 述上行功率控制信令所应用的子帧组中的子帧;
那么, 终端根据上行发射功率调整量结合上行功率控制信令确定相应子 帧的上行发射功率的操作包括:
终端确定当前子帧的上行发射功率时, 釆用应用于该子帧所属子帧组的 上行功率控制信令中的上行开环功率控制参数计算该子帧的上行发射功率, 釆用所确定的终端在该子帧上的上行发射功率调整量调整所计算出的上行发 射功率, 即:
P(k) = \ 0 logw (M (k)) + P0^ + aN - PL + ΔΤΡ (k) + fN (k) [dBm] 其中, 表示当前子帧索引, N表示子帧组索引,子帧组数量大于等于 2, 当前子帧^:属于第 N子帧组, 表示终端在当前子帧^:上的上行发射功率, 表示终端传输资源带宽, /^^和 为应用于当前子帧所属子帧组的上行 功率控制信令中的上行开环功率控制参数, 其中 P。 N表示应用于第 N子帧组 的***标称功率参数, 表示应用于第 N子帧组的路径损耗补偿因子, PL表 示终端估计的下行链路路径损耗, Δ^Α)表示终端传输补偿量, Λ^)表示终 端所确定的在当前子帧^:上的上行发射功率调整量。
实现上述上行功率控制方法的终端, 如图 2所示, 包括功率调整量确定 模块 201和发射功率确定模块 202, 其中:
功率调整量确定模块 201 , 设置为确定属于不同子帧组的子帧上的上行 发射功率调整量;
发射功率确定模块 202 , 设置为根据所述功率调整量确定模块所确定的 属于不同子帧组的子帧上的上行发射功率调整量确定相应子帧上的上行发射 功率。 子帧组的划分方式见上文描述, 此处不再赘述。
功率调整量确定模块 201如何确定属于不同子帧组的子帧上的上行发射 功率调整量,以及发射功率确定模块 202如何确定相应子帧的上行发射功率, 见上文描述, 此处不再赘述。
功率调整量确定模块 201还设置为接收基站发送的子帧组信息, 根据子 帧组信息确定子帧属于哪一个子帧组, 其中, 子帧组信息包括: 一个或多个 无线帧中的上行子帧的分组信息, 或者, 一个上行子帧属于哪一个子帧组的 信息。
一个优选的实施例中, 功率调整量确定模块 201还设置为根据是否收到 基站发送的子帧组信息来判断是否触发确定属于不同子帧组的子帧上的上行 发射功率调整量; 或者, 根据基站发送的使能信息来判断是否触发确定属于 不同子帧组的子帧上的上行发射功率调整量。
一个优选的实施例中, 终端还包括控制信令接收模块 203 , 设置为接收 基站发送的应用于不同子帧组的多套上行功率控制信令, 每套上行功率控制 信令应用于一个子帧组;发射功率确定模块 202根据功率调整量确定模块 201 确定的上行发射功率调整量结合控制信令接收模块 203接收到的上行功率控 制信令确定相应子帧的上行发射功率;
较佳地, 每套上行功率控制信令包括上行开环功率控制参数, 该上行开 环功率控制参数用于供发射功率确定模块 202计算终端在子帧上的上行发射 功率, 所述子帧为所述上行功率控制信令所应用的子帧组中的子帧;
较佳地, 所述发射功率确定模块 202根据功率调整量确定模块 201确定 的上行发射功率调整量结合控制信令接收模块 203接收到的上行功率控制信 令确定相应子帧的上行发射功率的具体操作, 见上文描述, 此处不再赘述。
实施例 2
本实施例描述一种上行功率控制方法中基站执行的处理, 如图 3所示, 包括以下步骤:
步骤 301 , 基站确定子帧组信息; 上述子帧组信息用于供终端确定属于不同子帧组的子帧上的上行发射功 率调整量;
上述子帧组至少包括第一子帧组和第二子帧组, 基站可以釆用如下方式 确定第一子帧组和第二子帧组: 所述基站确定被所述基站配置为上行传输子 帧且被距所述基站距离小于预设值的其他基站也配置为上行传输子帧的子帧 属于所述第一子帧组, 所述基站确定被所述基站配置为上行传输子帧且被距 所述基站距离小于预设值的其他基站配置为下行传输子帧的子帧属于所述第 二子帧组; 或者, 所述基站确定受到其他小区干扰小于预设门限的上行子帧 属于所述第一子帧组, 所述基站确定受到其他小区干扰超过预设门限的上行 子帧属于所述第二子帧组;
步骤 302, 基站向终端发送子帧组信息。
子帧组信息可以是一个或多个无线帧中的上行子帧的分组信息, 或者, 是一个上行子帧属于哪一个子帧组的信息。
一个优选的实施例中, 上述子帧组信息还用于供终端判断是否确定属于 不同子帧组的子帧上的上行发射功率调整量。
一个优选的实施例中, 上述基站还配置使能信息, 并向终端发送该使能 信息; 该使能信息用于供终端判断是否确定属于不同子帧组的子帧上的上行 发射功率调整量, 例如, 基站通过 RRC信令配置该使能信息并发送给终端, 如果该使能信息配置为 "1" , 则终端需要确定属于不同子帧组的子帧上的上 行发射功率调整量, 如果该使能信息配置不为 "1" , 终端不需要确定属于不 同子帧组的子帧上的上行发射功率调整量。
一个优选的实施例中, 上述基站还配置应用于不同子帧组的多套上行功 率控制信令, 每套上行功率控制信令应用于一个子帧组, 并向终端发送应用 于不同子帧组的多套上行功率控制信令;
其中, 每套上行功率控制信令包括上行开环功率控制参数, 该上行开环 功率控制参数用于供终端计算该终端在子帧上的上行发射功率, 所述子帧为 所述上行功率控制信令所应用的子帧组中的子帧。 实现上述上行功率控制方法的基站, 如图 2所示, 包括子帧组信息确定 模块 204和发送模块 205 , 其中:
所述子帧组信息确定模块 204 , 设置为确定子帧组信息;
所述发送模块 205 , 设置为向终端发送子帧组信息。
上述子帧组信息用于供终端确定属于不同子帧组的子帧上的上行发射功 率调整量; 子帧组的划分方式及内容见上文描述, 此处不再赘述。
一个优选的实施例中, 上述子帧组信息还用于供终端判断是否确定属于 不同子帧组的子帧上的上行发射功率调整量。
一个优选的实施例中, 所述基站还包括使能信息配置模块 206;
所述使能信息配置模块 206设置为配置使能信息, 所述发送模块 205还 用于向终端发送该使能信息, 该使能信息用于供终端判断是否确定属于不同 子帧组的子帧上的上行发射功率调整量。
一个优选的实施例中, 所述基站还包括上行功率控制信令配置模块 207 , 用于配置应用于不同子帧组的多套上行功率控制信令, 每套上行功率控制信 令应用于一个子帧组, 所述发送模块 205还设置为向终端发送应用于不同子 帧组的多套上行功率控制信令;
其中, 每套上行功率控制信令包括上行开环功率控制参数, 该上行开环 功率控制参数用于供终端计算该终端在子帧上的上行发射功率, 所述子帧为 所述上行功率控制信令所应用的子帧组中的子帧。
下面针对具体应用示例对本发明实施例的上行功率控制方法进行具体描 述。
应用示例 1
如图 4所示, 假设基站釆用表 1中的 TDD上下行配置 0。
本示例中, 该基站确定子帧 2、 7属于第一子帧组, 子帧 3、 4、 8、 9属 于第二子帧组, 该基站釆用如下方式划分第一子帧组和第二子帧组:
该基站获取距离其小于预设值的其他基站的 TDD上下行配置信息,并判 断出这些基站的 TDD上下行配置中子帧 2、 7均为上行传输子帧, 子帧 3、 4、 8、 9则均存在某一个或某几个基站将其配置为下行传输子帧, 则该基站确定 2、 7属于第一子帧组, 子帧 3、 4、 8、 9属于第二子帧组; 其中, 预设值可 由基站配置或者由***配置;
或者, 该基站获取其各个上行子帧上受到的干扰情况信息, 并判断出子 帧 2、 7上受到的干扰小于预设门限, 子帧 3、 4、 8、 9上受到的干扰超过预 设门限, 则该基站确定 2、 7属于第一子帧组, 子帧 3、 4、 8、 9属于第二子 帧组; 其中, 预设门限可由基站配置或者由***配置。
该基站把子帧组信息发送给终端, 终端接收基站发送的子帧组信息。 终端接收到基站发送的子帧组信息, 则终端判断出其需要确定属于不同 子帧组的子帧上的上行发射功率调整量;
或者, 基站还配置了使能信息(例如通过 RRC信令配置), 并把该使能 信息发送给终端; 终端接收基站发送的使能信息, 并判断是否需要确定属于 不同子帧组的子帧上的上行发射功率调整量, 例如, 如果该使能信息取值为 "1" , 则终端需要确定属于不同子帧组的子帧上的上行发射功率调整量, 如 果该使能信息取值不为 "1" , 终端不需要确定属于不同子帧组的子帧上的上 行发射功率调整量;
其中, 终端是否确定属于不同子帧组的子帧上的上行发射功率调整量, 指的是, 终端确定子帧上的上行发射功率调整量时是否考虑子帧组信息。
终端根据接收到的子帧组信息确定子帧属于哪一个子帧组。
终端确定属于不同子帧组的子帧上的上行发射功率调整量, 具体操作包 括: 终端接收基站发送的功率调整信令, 根据该功率调整信令对应的调整量 以及子帧组信息确定属于不同子帧组的子帧上的上行发射功率调整量;
其中, 功率调整信令指的是上行传输功率控制 (TPC )命令, 其对应的 调整量包括累计调整量或绝对调整量;
如果 TPC命令对应的调整量为累计调整量,则终端根据 TPC命令对应的 调整量以及子帧组信息确定属于不同子帧组的子帧上的上行发射功率调整量 的具体操作为: 以子帧 2为例, 子帧 2属于第一子帧组, 终端确定子帧 2上的上行发射 功率调整量为: 终端在子帧 2的前一个与子帧 2属于同一个子帧组的子帧 7 上的上行发射功率调整量与 TPC命令对应的累计调整量之和, 即:
2) = 7) + δ [dB]
其中, (2)表示终端确定的在子帧 2上的上行发射功率调整量, (7)表 示终端在子帧 7上的上行发射功率调整量, 表示终端接收基站发送的用于 子帧 2的 TPC命令对应的累计调整量, 下标 1表示子帧组索引, 即子帧 2、 7 属于第一子帧组;
以子帧 3为例, 子帧 3属于第二子帧组, 终端确定子帧 3上的上行发射 功率调整量为: 终端在子帧 3的前一个与子帧 3属于同一个子帧组的子帧 9 上的上行发射功率调整量与 TPC命令对应的累计调整量之和, 即:
f2(3) = f2(9) + S [dB]
其中, /2(3)表示终端确定的在子帧 3上的上行发射功率调整量, /2(9)表 示终端在子帧 9上的上行发射功率调整量, 表示终端接收基站发送的用于 子帧 3的 TPC命令对应的累计调整量, 下标 2表示子帧组索引, 即子帧 3、 9 属于第二子帧组; 如果 TPC命令对应的调整量为绝对调整量,则终端根据 TPC命令对应的 调整量以及子帧组信息确定属于不同子帧组的子帧上的上行发射功率调整量 的操作包括:
以子帧 2为例, 子帧 2属于第一子帧组, 终端确定子帧 2上的上行发射 功率调整量为 TPC命令对应的绝对调整量, 即:
2) = δ [dB]
其中, (2)表示终端确定的在子帧 2上的上行发射功率调整量, 表示 终端接收基站发送的用于子帧 2的 TPC命令对应的绝对调整量, 下标 1表示 子帧组索引, 即子帧 2属于第一子帧组;
以子帧 3为例, 子帧 3属于第二子帧组, 终端确定子帧 3上的上行发射 功率调整量为 TPC命令对应的绝对调整量, 即:
W)二 δ [dB] 其中, /2(3)表示终端确定的在子帧 3上的上行发射功率调整量, 表示 终端接收基站发送的用于子帧 3的 TPC命令对应的绝对调整量, 下标 2表示 子帧组索引, 即子帧 3属于第二子帧组。
终端根据所确定的属于不同子帧组的子帧上的上行发射功率调整量确定 相应子帧上的上行发射功率;
以子帧 2为例, 根据 3GPP TS 36.213 , 对于物理上行共享信道, 终端确 定其在子帧 2上的上行发射功率为:
P(2) = 10 log10 (M(2》 + Ρ0 + « · PJ + Aw (2) + _; (2) [dBm]
其中, P(2)表示终端在子帧 2上的上行发射功率, M(2)表示终端在子帧 2上的传输资源带宽, P。表示***标称功率参数, 表示路径损耗补偿因子, 表示终端估计的下行链路路径损耗, A (2)表示终端在子帧 2上的传输补 偿量, (2)表示终端所确定的在子帧 2上的上行发射功率调整量, 下标 1表 示子帧组索引, 即子帧 2属于第一子帧组;
以子帧 3为例, 根据 3GPP TS 36.213 , 对于物理上行共享信道, 终端确 定其在子帧 3上的上行发射功率为:
P(3) = 10 log10 ( (3)) + P0 + - PL + ATF(3) + f2 (3) [dBm]
其中, P(3)表示终端在子帧 3上的上行发射功率, M(3)表示终端在子帧 3 上的传输资源带宽, P。表示***标称功率参数, "表示路径损耗补偿因子, PL 表示终端估计的下行链路路径损耗, A (3)表示终端在子帧 3 上的传输补偿 量, /2 (3)表示终端所确定的在子帧 3上的上行发射功率调整量, 下标 2表示 子帧组索引, 即子帧 3属于第二子帧组。
应用示例 2
如图 4所示, 假设基站釆用表 1中的 TDD上下行配置 0。
本示例中, 同应用示例 1 , 该基站确定子帧 2、 7属于第一子帧组, 子帧
3、 4、 8、 9属于第二子帧组。
该基站把子帧组信息发送给终端, 终端接收基站发送的子帧组信息。 终端判断是否确定属于不同子帧组的子帧上的上行发射功率调整量, 同 应用示例 1。
终端根据接收到的子帧组信息确定子帧属于哪一个子帧组。
终端确定属于不同子帧组的子帧上的上行发射功率调整量, 具体操作过 程同应用示例 1。
本示例中,该基站还配置了应用于不同子帧组的多套上行功率控制信令, 即: 基站配置了两套上行功率控制信令, 分别应用于第一子帧组和第二子帧 组; 该基站把两套上行功率控制信令发送给终端。
上述两套上行功率控制信令包括上行开环功率控制参数, 分别用于供终 端计算其在属于第一子帧组的子帧上的上行发射功率和属于第二子帧组的子 帧上的上行发射功率。
终端接收基站发送的分别应用于第一子帧组和第二子帧组的两套上行功 率控制信令。
终端根据所确定的上行发射功率调整量结合接收到的上行功率控制信令 确定该终端在相应子帧上的上行发射功率, 具体操作包括:
终端确定一子帧的上行发射功率时, 釆用应用于该子帧所属子帧组的上 行功率控制信令中的上行开环功率控制参数计算该子帧的上行发射功率, 釆 用所确定的终端在该子帧上的上行发射功率调整量调整所计算出的上行发射 功率;
以子帧 2为例, 根据 3GPP TS 36.213 , 对于物理上行共享信道, 终端确 定其在子帧 2上的上行发射功率为:
(2) = 101og10 (M (2)) + P0 l + a PL + ΔΤΡ (2) + fx (2) [dBm] 其中, P(2)表示终端在子帧 2上的上行发射功率, M(2)表示终端在子帧 2上的传输资源带宽, Ρ ι表示应用于第一子帧组的***标称功率参数, 表 示应用于第一子帧组的路径损耗补偿因子, 表示终端估计的下行链路路径 损耗, Δ^Ζ)表示终端在子帧 2上的传输补偿量, (2)表示终端所确定的在子 帧 2上的上行发射功率调整量, 下标 1表示子帧组索引, 即子帧 2属于第一 子帧组, /^和 为应用于第一子帧组的那一套上行功率控制信令中的上行开 环功率控制参数;
以子帧 3为例, 根据 3GPP TS 36.213 , 对于物理上行共享信道, 终端确 定其在子帧 3上的上行发射功率为:
尸 (3) = 10 log10( (3)) + P0 2 + a2 - PL + ΔΤΡ (3) + f2 (3) [dBm]
其中, P(3)表示终端在子帧 3上的上行发射功率, M(3)表示终端在子帧 3 上的传输资源带宽, ρ 2表示应用于第二子帧组的***标称功率参数, 《2表示 应用于第二子帧组的路径损耗补偿因子, 表示终端估计的下行链路路径损 耗, Aw(3)表示终端在子帧 3上的传输补偿量, /2(3)表示终端所确定的在子帧
3上的上行发射功率调整量, 下标 2表示子帧组索引, 即子帧 3属于第二子 帧组, 2和《2为应用于第二子帧组的那一套上行功率控制信令中的上行开环 功率控制参数。
应用示例 3
如图 4所示, 假设基站釆用表 1中的 TDD上下行配置 0。
本示例中, 同应用示例 1 , 该基站确定子帧 2、 7属于第一子帧组, 子帧
3、 4、 8、 9属于第二子帧组。
该基站把子帧组信息发送给终端, 终端接收基站发送的子帧组信息。 终端判断是否确定属于不同子帧组的子帧上的上行发射功率调整量, 同 应用示例 1。
终端根据接收到的子帧组信息确定子帧属于哪一个子帧组。
终端确定属于不同子帧组的子帧上的上行发射功率调整量, 具体操作包 括: 终端接收基站发送的功率调整信令, 根据该功率调整信令对应的调整量 以及子帧组信息确定属于不同子帧组的子帧上的上行发射功率调整量;
其中, 功率调整信令指的是上行传输功率控制 (TPC )命令, 其对应的 调整量包括累计调整量或绝对调整量;
本示例中, 基站以 10ms (—个无线帧的时间长度)为周期针对每组上行 子帧配置 TPC命令并发送给终端; 4叚设基站针对一个无线帧中属于不同子帧组的第一个上行子帧配置 TPC 命令并发送给终端, 即: 基站为一个无线帧中属于第一子帧组的子帧 2配置 TPC命令并发送给终端; 基站为一个无线帧中属于第二子帧组的子帧 3配置 TPC命令并发送给终端; 对于其他上行子帧, 基站不再配置发送 TPC命令; 那么, 如果 TPC命令对应的调整量为累计调整量, 以属于第一子帧组的 子帧 2、 7为例, 终端根据 TPC命令对应的调整量以及子帧组信息确定属于 第一子帧组的子帧上的上行发射功率调整量的具体操作为:
终端确定子帧 2上的上行发射功率调整量为: 终端在子帧 2的前一个与 子帧 2属于同一个子帧组的子帧 7上的上行发射功率调整量与 TPC命令对应 的累计调整量之和, 即:
2) = 7) + δ [dB]
其中, (2)表示终端确定的在子帧 2上的上行发射功率调整量, (7)表 示终端在子帧 7上的上行发射功率调整量, 表示终端接收基站发送的用于 子帧 2的 TPC命令对应的累计调整量, 下标 1表示子帧组索引, 即子帧 2、 7 属于第一子帧组;
由于基站没有为子帧 7配置发送 TPC命令,则终端假设用于子帧 7的 TPC 命令对应的累计调整量为 OdB, 那么, 终端确定子帧 7上的上行发射功率调 整量为: 终端在子帧 7的前一个与子帧 7属于同一个子帧组的子帧 2上的上 行发射功率调整量与 TPC命令对应的累计调整量之和, 即:
(7) = (2) + 0 [dB] , 即/; (7) = (2) [dB]
其中, (7)表示终端确定的在子帧 7上的上行发射功率调整量, (2)表 示终端在子帧 2上的上行发射功率调整量, 0表示终端假设用于子帧 7的 TPC 命令对应的累计调整量为 OdB, 下标 1表示子帧组索引, 即子帧 2、 7属于第 一子帧组;
如果 TPC命令对应的调整量为绝对调整量,以属于第一子帧组的子帧 2、
7为例, 终端根据 TPC命令对应的调整量以及子帧组信息确定属于第一子帧 组的子帧上的上行发射功率调整量的具体操作为:
终端确定子帧 2上的上行发射功率调整量为 TPC命令对应的绝对调整 量, 即:
2) = δ 岡
其中, (2)表示终端确定的在子帧 2上的上行发射功率调整量, 表示 终端接收基站发送的用于子帧 2的 TPC命令对应的绝对调整量, 下标 1表示 子帧组索引, 即子帧 2属于第一子帧组;
由于基站没有为子帧 7配置发送 TPC命令, 则终端确定子帧 7上的上行 发射功率调整量为终端在子帧 7的前一个与子帧 7属于同一个子帧组的子帧 2上的上行发射功率调整量, 即: w) = ) 岡
其中, (7)表示终端确定的在子帧 7上的上行发射功率调整量, (2)表 示终端在子帧 2上的上行发射功率调整量, 下标 1表示子帧组索引, 即子帧 2、 7属于第一子帧组。
终端根据所确定的属于不同子帧组的子帧上的上行发射功率调整量确定 相应子帧上的上行发射功率, 同应用示例 1。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
当然, 本发明还可有其他多种实施例, 在不背离本发明精神及其实质的 但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。
工业实用性 本发明实施例通过分别调整或确定终端在属于不同子帧组的子帧上的上 终端在属于不同子帧组的上行子帧进行上行传输的 SINR需求, 从而保证终 端及***的上行传输性能。

Claims

权 利 要 求 书
1、 一种上行功率控制方法, 包括:
终端分别确定属于不同子帧组的子帧上的上行发射功率调整量; 所述终端根据所确定的属于不同子帧组的子帧上的上行发射功率调整量 确定相应子帧上的上行发射功率。
2、 如权利要求 1所述的方法, 其中:
所述子帧组至少包括第一子帧组和第二子帧组, 其中: 所述第一子帧组 包括被基站配置为上行传输子帧且被距所述基站距离小于预设值的其他基站 也配置为上行传输子帧的子帧, 所述第二子帧组包括被所述基站配置为上行 传输子帧且被距所述基站距离小于预设值的其他基站配置为下行传输子帧的 子帧; 或者, 所述第一子帧组包括受到其他小区干扰小于预设门限的上行子 帧, 所述第二子帧组包括受到其他 d、区干扰超过预设门限的上行子帧。
3、 如权利要求 1所述的方法, 其中:
所述终端确定属于不同子帧组的子帧上的上行发射功率调整量, 包括: 终端接收基站发送的功率调整信令, 根据所述功率调整信令对应的调整 量以及子帧组信息确定属于不同子帧组的子帧上的上行发射功率调整量; 所述基站发送的功率调整信令包括上行传输功率控制 (TPC )命令。
4、 如权利要求 3所述的方法, 其中:
所述功率调整信令对应的调整量为累计调整量, 所述终端根据功率调整 信令对应的调整量以及子帧组信息确定属于不同子帧组的子帧上的上行发射 功率调整量, 包括:
所述终端确定子帧 上的上行发射功率调整量为:终端在子帧 k的前一个 与子帧^:属于同一个子帧组的子帧上的上行发射功率调整量与所述功率调整 信令对应的累计调整量之和, 即:
fN(k) = fN(i) + S [dB]
其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, ,表示子帧 的前一个属于第 N子帧组的子帧索引, 表示终端确定的在子帧^:上的上行发射功率调整量, (0表示终端在子 帧 I上的上行发射功率调整量, 表示终端接收基站发送的用于子帧 k的功率 调整信令对应的累计调整量。
5、 如权利要求 3所述的方法, 其中:
所述功率调整信令对应的调整量为绝对调整量, 所述终端根据功率调整 信令对应的调整量以及子帧组信息确定属于不同子帧组的子帧上的上行发射 功率调整量, 包括:
所述终端确定子帧^:上的上行发射功率调整量为所述功率调整信令对应 的绝对调整量, 即:
二 δ [dB]
其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, 表示终端确定的在子帧^:上的上行发射功率调整 量, 表示终端接收基站发送的用于子帧 k的功率调整信令对应的绝对调整 量。
6、 如权利要求 1所述的方法, 其中:
所述终端根据所确定的属于不同子帧组的子帧上的上行发射功率调整量 确定相应子帧上的上行发射功率, 包括:
所述终端根据以下公式计算子帧上的上行发射功率:
P(k) = 10 \ogw(M(k)) + P0 + - PL + Aw(k) + fN (k) [dBm] 其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, 表示终端在子帧^:上的上行发射功率, 表示 终端传输资源带宽, P。表示***标称功率参数, "表示路径损耗补偿因子, PL 表示终端估计的下行链路路径损耗, Δ^Α)表示终端传输补偿量, Λ^)表示 终端所确定的在子帧^:上的上行发射功率调整量。
7、 如权利要求 1所述的方法, 所述方法还包括:
所述终端接收基站发送的子帧组信息, 根据子帧组信息确定子帧属于哪 一个子帧组, 其中, 子帧组信息包括: 一个或多个无线帧中的上行子帧的分 组信息, 或者, 一个上行子帧属于哪一个子帧组的信息。
8、 如权利要求 1所述的方法, 所述方法还包括:
所述终端根据是否收到基站发送的子帧组信息来判断是否执行确定属于 不同子帧组的子帧上的上行发射功率调整量的步骤, 或者, 所述终端根据基 站发送的使能信息来判断是否执行确定属于不同子帧组的子帧上的上行发射 功率调整量的步骤。
9、 如权利要求 1-8中任一权利要求所述的方法, 其中:
在确定上行发射功率之前, 所述方法还包括: 终端接收基站发送的应用 于不同子帧组的多套上行功率控制信令, 每套上行功率控制信令应用于一个 子帧组;
所述终端根据所确定的属于不同子帧组的子帧上的上行发射功率调整量 确定相应子帧上的上行发射功率, 包括: 所述终端根据所确定的上行发射功 率调整量结合所接收到的上行功率控制信令确定相应子帧的上行发射功率。
10、 如权利要求 9所述的方法, 其中:
所述每套上行功率控制信令包括上行开环功率控制参数; 所述终端根据所确定的上行发射功率调整量结合所接收到的上行功率控 制信令确定相应子帧的上行发射功率, 包括:
所述终端根据以下公式计算子帧的上行发射功率:
P(k) = \ 0 logw (M (k)) + P0^ + aN - PL + ΔΤΡ (k) + fN (k) [dBm] 其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, 表示终端在当前子帧^:上的上行发射功率, 表 示终端传输资源带宽, ^^和 为应用于子帧^:所属子帧组的上行功率控制 信令中的上行开环功率控制参数, 其中 P。 N表示应用于第 N子帧组的***标 称功率参数, 表示应用于第 N子帧组的路径损耗补偿因子, PL表示终端估 计的下行链路路径损耗, Δ^Α)表示终端传输补偿量, Λ^)表示终端所确定 的在子帧^:上的上行发射功率调整量。
11、 一种上行功率控制方法, 包括:
基站确定子帧组信息, 所述子帧组信息用于供终端分别确定属于不同子 帧组的子帧上的上行发射功率调整量; 所述基站向终端发送子帧组信息。
12、 如权利要求 11所述的方法, 其中:
所述子帧组至少包括第一子帧组和第二子帧组, 所述基站确定子帧组信 息, 包括: 所述基站确定被所述基站配置为上行传输子帧且被距所述基站距 离小于预设值的其他基站也配置为上行传输子帧的子帧属于所述第一子帧 组, 所述基站确定被所述基站配置为上行传输子帧且被距所述基站距离小于 预设值的其他基站配置为下行传输子帧的子帧属于所述第二子帧组; 或者, 所述基站确定受到其他小区干扰小于预设门限的上行子帧属于所述第一子帧 组, 所述基站确定受到其他小区干扰超过预设门限的上行子帧属于所述第二 子帧组;
所述子帧组信息包括: 一个或多个无线帧中的上行子帧的分组信息, 或 者, 一个上行子帧属于哪一个子帧组的信息。
13、 如权利要求 11所述的方法, 其中:
所述子帧组信息还用于供终端判断是否确定属于不同子帧组的子帧上的 上行发射功率调整量。
14、 如权利要求 11所述的方法, 所述方法还包括:
所述基站配置使能信息, 向终端发送所述使能信息; 所述使能信息用于 供终端判断是否确定属于不同子帧组的子帧上的上行发射功率调整量。
15、 如权利要求 11-14中任一权利要求所述的方法, 所述方法还包括: 所述基站配置应用于不同子帧组的多套上行功率控制信令, 每套上行功 率控制信令应用于一个子帧组; 所述基站向终端发送应用于不同子帧组的多 套上行功率控制信令。
16、 如权利要求 15所述的方法, 其中:
所述每套上行功率控制信令包括上行开环功率控制参数, 所述上行开环 功率控制参数用于供终端计算该终端在子帧上的上行发射功率, 所述子帧为 所述上行功率控制信令所应用的子帧组中的子帧。
17、 一种实现上行功率控制的终端, 包括功率调整量确定模块和发射功 率确定模块, 其中: 所述功率调整量确定模块, 设置为分别确定属于不同子帧组的子帧上的 上行发射功率调整量;
所述发射功率确定模块, 设置为根据所述功率调整量确定模块所确定的 属于不同子帧组的子帧上的上行发射功率调整量确定相应子帧上的上行发射 功率。
18、 如权利要求 17所述的终端, 其中:
所述子帧组至少包括第一子帧组和第二子帧组, 其中: 所述第一子帧组 包括被基站配置为上行传输子帧且被距所述基站距离小于预设值的其他基站 也配置为上行传输子帧的子帧, 所述第二子帧组包括被所述基站配置为上行 传输子帧且被距所述基站距离小于预设值的其他基站配置为下行传输子帧的 子帧; 或者, 所述第一子帧组包括受到其他小区干扰小于预设门限的上行子 帧, 所述第二子帧组包括受到其他 d、区干扰超过预设门限的上行子帧。
19、 如权利要求 17所述的终端, 其中:
所述功率调整量确定模块是设置为以如下方式分别确定属于不同子帧组 的子帧上的上行发射功率调整量:
接收基站发送的功率调整信令, 根据所述功率调整信令对应的调整量以 及子帧组信息确定属于不同子帧组的子帧上的上行发射功率调整量; 所述功 率调整信令包括上行传输功率控制 (TPC )命令。
20、 如权利要求 19所述的终端, 其中:
所述功率调整信令对应的调整量为累计调整量; 所述功率调整量确定模 块是设置为以如下方式根据功率调整信令对应的调整量以及子帧组信息确定 属于不同子帧组的子帧上的上行发射功率调整量:
确定子帧 上的上行发射功率调整量为:终端在子帧 k的前一个与子帧 k 属于同一个子帧组的子帧上的上行发射功率调整量与所述功率调整信令对应 的累计调整量之和, 即:
fN(k) = fN(i) + S 岡
其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2 , 子 帧^:属于第 N子帧组, ,表示子帧 的前一个属于第 N子帧组的子帧索引, 表示终端确定的在子帧^:上的上行发射功率调整量, (0表示终端在子 帧 I上的上行发射功率调整量, 表示终端接收基站发送的用于子帧 k的功率 调整信令对应的累计调整量。
21、 如权利要求 19所述的终端, 其中:
所述功率调整信令对应的调整量为绝对调整量; 所述功率调整量确定模 块是设置为以如下方式根据功率调整信令对应的调整量以及子帧组信息确定 属于不同子帧组的子帧上的上行发射功率调整量:
确定子帧^:上的上行发射功率调整量为所述功率调整信令对应的绝对调 整量, 即:
二 δ [dB]
其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, 表示终端确定的在子帧^:上的上行发射功率调整 量, 表示终端接收基站发送的用于子帧 k的功率调整信令对应的绝对调整 量。
22、 如权利要求 17所述的终端, 其中: 所述发射功率确定模块是设置为根据以下公式计算子帧上的上行发射功 率:
P(k) = 10 \ogw(M(k)) + P0 + - PL + Aw(k) + fN (k) [dBm] 其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, 表示终端在子帧^:上的上行发射功率, 表示 终端传输资源带宽, P。表示***标称功率参数, "表示路径损耗补偿因子, PL 表示终端估计的下行链路路径损耗, Δ^Α)表示终端传输补偿量, Λ^)表示 终端所确定的在子帧^:上的上行发射功率调整量。
23、 如权利要求 17所述的终端, 其中:
所述功率调整量确定模块还设置为接收基站发送的子帧组信息, 根据子 帧组信息确定子帧属于哪一个子帧组, 其中, 子帧组信息包括: 一个或多个 无线帧中的上行子帧的分组信息, 或者, 一个上行子帧属于哪一个子帧组的 信息。
24、 如权利要求 17所述的终端, 其中:
所述功率调整量确定模块还设置为根据是否收到基站发送的子帧组信息 来判断是否触发确定属于不同子帧组的子帧上的上行发射功率调整量;或者, 所述功率调整量确定模块还用于根据基站发送的使能信息来判断是否触发确 定属于不同子帧组的子帧上的上行发射功率调整量。
25、 如权利要求 17-24中任一权利要求所述的终端,
所述终端还包括控制信令接收模块, 设置为接收基站发送的应用于不同 子帧组的多套上行功率控制信令,每套上行功率控制信令应用于一个子帧组; 所述发射功率确定模块是设置为以如下方式根据所述功率调整量确定模 块所确定的属于不同子帧组的子帧上的上行发射功率调整量确定相应子帧上 的上行发射功率: 根据所述功率调整量确定模块确定的上行发射功率调整量 结合所述控制信令接收模块接收到的上行功率控制信令确定相应子帧的上行 发射功率。
26、 如权利要求 25所述的终端, 其中:
所述每套上行功率控制信令包括上行开环功率控制参数;
所述发射功率确定模块是设置为根据以下公式计算子帧的上行发射功 率:
P(k) = \ 0 logw (M (k)) + P0^ + aN - PL + ΔΤΡ (k) + fN (k) [dBm] 其中, ^:表示子帧索引, N表示子帧组索引, 子帧组数量大于等于 2, 子 帧^:属于第 N子帧组, 表示终端在子帧^:上的上行发射功率, 表示 终端传输资源带宽, ^^和 为应用于子帧 ^:所属子帧组的上行功率控制信 令中的上行开环功率控制参数, 其中 P。 N表示应用于第 N子帧组的***标称 功率参数, 表示应用于第 N子帧组的路径损耗补偿因子, 表示终端估计 的下行链路路径损耗, Δ^Α)表示终端传输补偿量, Λ^)表示终端所确定的 在子帧^:上的上行发射功率调整量。
27、 一种实现上行功率控制的基站, 包括子帧组信息确定模块和发送模 块, 其中:
所述子帧组信息确定模块, 设置为确定子帧组信息, 所述子帧组信息用 于供终端确定属于不同子帧组的子帧上的上行发射功率调整量; 所述发送模块, 设置为向终端发送子帧组信息。
28、 如权利要求 27所述的基站, 其中:
所述子帧组至少包括第一子帧组和第二子帧组, 所述子帧组信息确定模 块是设置为以如下方式确定子帧组信息: 确定所述基站配置为上行传输子帧 且距所述基站距离小于预设值的其他基站也配置为上行传输子帧的子帧属于 所述第一子帧组, 确定所述基站配置为上行传输子帧且距所述基站距离小于 预设值的其他基站将其配置为下行传输子帧的子帧属于所述第二子帧组; 或 者, 确定受到其他小区干扰小于预设门限的上行子帧属于所述第一子帧组, 确定受到其他小区干扰超过预设门限的上行子帧属于所述第二子帧组;
所述子帧组信息包括: 一个或多个无线帧中的上行子帧的分组信息, 或 者, 一个上行子帧属于哪一个子帧组的信息。
29、 如权利要求 27所述的基站, 其中:
所述子帧组信息还设置为供终端判断是否确定属于不同子帧组的子帧上 的上行发射功率调整量。
30、 如权利要求 27所述的基站, 其中:
所述基站还包括使能信息配置模块, 设置为配置使能信息, 所述使能信 息用于供终端判断是否确定属于不同子帧组的子帧上的上行发射功率调整 量;
所述发送模块还设置为向终端发送所述使能信息。
31、 如权利要 27-30中任一权利要求所述的基站,
所述基站还包括上行功率控制信令配置模块, 设置为配置应用于不同子 帧组的多套上行功率控制信令, 每套上行功率控制信令应用于一个子帧组; 所述发送模块还设置为向终端发送应用于不同子帧组的多套上行功率控 制信令。
32、 如权利要求 31所述的基站, 其中:
所述每套上行功率控制信令包括上行开环功率控制参数, 所述上行开环 功率控制参数用于供终端计算该终端在子帧上的上行发射功率, 所述子帧为 所述上行功率控制信令所应用的子帧组中的子帧。
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CN102149099A (zh) * 2011-04-08 2011-08-10 电信科学技术研究院 一种进行小区间干扰协调的方法及装置

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