WO2020173437A1 - Procédé de réglage de puissance de liaison montante et dispositif associé - Google Patents

Procédé de réglage de puissance de liaison montante et dispositif associé Download PDF

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Publication number
WO2020173437A1
WO2020173437A1 PCT/CN2020/076631 CN2020076631W WO2020173437A1 WO 2020173437 A1 WO2020173437 A1 WO 2020173437A1 CN 2020076631 W CN2020076631 W CN 2020076631W WO 2020173437 A1 WO2020173437 A1 WO 2020173437A1
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WO
WIPO (PCT)
Prior art keywords
priority
uplink data
control information
downlink control
side device
Prior art date
Application number
PCT/CN2020/076631
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English (en)
Chinese (zh)
Inventor
冯浩
焦淑蓉
花梦
Original Assignee
华为技术有限公司
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Publication of WO2020173437A1 publication Critical patent/WO2020173437A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/281—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account user or data type priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range

Definitions

  • the embodiments of the present application relate to the field of wireless communication, and in particular, to an uplink power adjustment technology. Background technique
  • the terminal side equipment and the access network side equipment transmit various protocol layers on the uplink and downlink in accordance with the 3rd generation partnership project (the 3rd generation partnership project, 3GPP) organization.
  • Such data where the data is control signaling or service data.
  • These protocol layers mainly include physical (physical, PHY) layer, media access control (media access control, MAC) layer, radio link control (RLC), packet data convergence protocol (Packet Data Convergence Protocol, PDCP) ) Layer and radio resource control (radio resource control, RRC) layer, etc.
  • the access network side device may send downlink control information (DCI) on a physical downlink control channel (physical downlink control channel, PDCCH), where the downlink control information includes A transmit power control (transmit power control, TPC) command, where the TPC command indicates an uplink power adjustment amount for sending uplink data.
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • TPC transmit power control
  • the DCI may be specific to the terminal side device, or may be specific to a certain terminal group containing the terminal side device.
  • the uplink power adjustment mode is the accumulation mode
  • the current uplink power for sending uplink data is the uplink power adjustment indicated by the TPC command superimposed on the last uplink power
  • the candidate adjustment of the uplink power adjustment is ⁇ -1, 0, 1, 3 ⁇ dB (dB X
  • the terminal-side device can send low-priority services (for example, enhanced mobile broadband (eMBB) services) and high-priority services (for example, ultra reliable and low latency communications). , URLLC) business).
  • the access network side device instructs the uplink power adjustment amount when sending high priority services to a larger value (for example, 3dB) through the TPC command to quickly increase the uplink power, thereby resisting other terminal side devices sending on the same time-frequency resource Of low-priority services.
  • the terminal-side device stops sending a certain priority service (for example, a high priority service) and starts to send another priority service (for example, a low priority service)
  • the uplink power may have accumulated to a certain level.
  • the access network side device may need to reduce the uplink power, but the fastest adjustment can only use -ldB to reduce the uplink power, which will affect the services sent by other terminal side devices (especially high priority Business) cause huge disturbance. Summary of the invention
  • embodiments of the present application provide an uplink power adjustment method and related equipment.
  • the first aspect of the embodiments of the present application provides an uplink power adjustment method, including the following content.
  • the terminal side device receives the downlink control information sent by the access network side device, where the downlink control information indicates to send the uplink data
  • the uplink power adjustment is indicated in at least one candidate adjustment corresponding to the first priority; in the case that the priority of the uplink data is the second priority, the downlink control information starts from the second priority
  • At least one candidate adjustment amount corresponding to the first priority level indicates the uplink power adjustment amount; the absolute value of the smallest negative value in the at least one candidate adjustment amount corresponding to the first priority level is greater than or equal to at least one that corresponds to the second priority level The largest positive value in a candidate adjustment.
  • different priorities respectively correspond to a set of candidate adjustments
  • the access network side device and the terminal side device correspond the set of candidate adjustments corresponding to the priority of the current uplink data with the candidate bit status of the downlink control information.
  • the access network side device may indicate to the terminal side device which of the set of candidate adjustments is the actual uplink power adjustment through the actual bit state in the downlink control information.
  • the absolute value of the smallest negative value in the group of candidate adjustments corresponding to the first priority is greater than or equal to the The largest positive value in the group of candidate adjustments corresponding to the second priority, even if the terminal side device switches from sending the uplink data of the second priority to sending the uplink data of the first priority, because the first priority
  • the candidate adjustment amount corresponding to a priority has a larger negative absolute value, so that the uplink power can be reduced more quickly, thereby reducing interference to other terminal side devices.
  • the absolute value of the smallest negative value in the at least one candidate adjustment corresponding to the first priority is greater than or equal to at least the one corresponding to the second priority
  • the absolute value of the smallest negative value in a candidate adjustment is higher than the maximum decrease in the candidate adjustment amount corresponding to the second priority, which is beneficial to the terminal side device When switching from sending the uplink data of the second priority to sending the uplink data of the first priority, the uplink power is reduced more quickly.
  • the largest positive value of the at least one candidate adjustment corresponding to the first priority is less than or equal to The largest positive value in at least one candidate adjustment amount corresponding to the second priority.
  • the maximum improvement degree of the candidate adjustment amount corresponding to the second priority is not higher than the maximum improvement degree of the candidate adjustment amount corresponding to the first priority, which can increase the first priority The adjustment accuracy of the candidate adjustment amount corresponding to the level.
  • the first priority corresponds to a candidate adjustment with a maximum increase of +3dB
  • the second priority corresponds to a candidate adjustment with a maximum increase of +5dB
  • the number of candidate bit states of the downlink control information is fixed (for example, 2 bits have 4 Candidate bit state)
  • the first priority corresponds to 4 candidate adjustments from 0 to 3dB
  • the second priority corresponds to 4 candidate adjustments from 0 to 5dB. Therefore, the accuracy of the candidate adjustment amount corresponding to the first priority level is higher.
  • the method further includes: the terminal side device according to the downlink control information Determine the priority of the uplink data; wherein the downlink control information indicates the priority of the uplink data, the transmission format used by the downlink control information indicates the priority of the uplink data, or the downlink control information
  • the scrambling identifier used by the control information indicates the priority of the uplink data.
  • a second aspect of the embodiments of the present application provides an uplink power adjustment method, including the following content.
  • the terminal-side device receives first downlink control information sent by the access network-side device, where the first downlink control information indicates a first uplink power adjustment amount when sending first uplink data; the terminal-side device is based on the An uplink power adjustment amount adjusts the uplink power;
  • the terminal-side device receives second downlink control information sent by the access network-side device, where the second downlink control information information indicates a second uplink power adjustment amount when sending second uplink data; the terminal-side device is based on Adjusting the uplink power again by the second uplink power adjustment amount and the adjusted uplink power;
  • the largest positive value of at least one candidate adjustment of the second uplink power adjustment is greater than or equal to the The largest positive value in at least one candidate adjustment of the first uplink power adjustment; or, in a case where the priority of the second uplink data is less than the priority of the first uplink data, the second uplink power
  • the absolute value of the smallest negative value in the at least one candidate adjustment amount of the adjustment amount is greater than or equal to the largest positive value in the at least one candidate adjustment amount of the first uplink power adjustment amount.
  • the terminal-side device can switch from sending the first uplink data to sending the second uplink data. decline.
  • the method further includes:
  • the terminal side device receives a radio resource control RRC message sent by the access network side device, where the RRC message indicates that the priority of the second uplink data is higher than the priority of the first uplink data Or in a case where the priority of the second uplink data is less than the priority of the first uplink data, at least one candidate adjustment of the second uplink power adjustment and the first uplink power adjustment At least one candidate adjustment.
  • the terminal side device can easily implement the above technical solution, thereby obtaining the required candidate adjustment amount.
  • the method further includes:
  • the terminal-side device determines the priority of the first uplink data according to the first downlink control information; the terminal-side device determines the priority of the second uplink data according to the second downlink control information; wherein
  • the first downlink control information indicates the priority of the first uplink data, the transmission format used by the first downlink control information indicates the priority of the first uplink data, or the first uplink data
  • the scrambling identifier used by a downlink control information indicates the priority of the first uplink data; the second downlink control information indicates the priority of the second uplink data, and the second downlink control information
  • the used transmission format indicates the priority of the second uplink data, or the scrambling identifier used by the second downlink control information indicates the priority of the second uplink data.
  • This possible implementation provides multiple design methods for the priority of the uplink data through the design of the downlink control information, so that the terminal-side device can identify the priority of the first uplink data and the second uplink data according to the uplink control information .
  • the third aspect of the embodiments of the present application provides an uplink power adjustment method, including the following content.
  • the terminal-side device receives first downlink control information sent by the access network-side device, where the first downlink control information indicates a first uplink power adjustment amount when sending first uplink data; the terminal-side device is based on the An uplink power adjustment amount adjusts the uplink power;
  • the terminal-side device receives the second downlink control information sent by the access network-side device, where the second downlink control information indicates a second uplink power adjustment amount when sending second uplink data; Adjusting the second uplink power adjustment amount and the adjusted uplink power to adjust the uplink power again;
  • the second uplink power adjustment In a case where the priority of the first uplink data is higher than the priority of the second uplink data, and the first uplink power adjustment amount is greater than or equal to a preset threshold, the second uplink power adjustment The absolute value of the smallest negative value in the at least one candidate adjustment amount of the first uplink power adjustment amount is not less than the absolute value of the largest positive value or the smallest negative value in the at least one candidate adjustment amount of the first uplink power adjustment amount or the preset threshold.
  • the terminal-side device can realize the rapid uplink power when transmitting the first uplink data to the second uplink data. decline.
  • the candidate adjustment amount of the second uplink power adjustment amount is not greater than the preset threshold (that is, the uplink power when sending the first uplink data is not rapidly increased).
  • the candidate adjustment amount of the second uplink power adjustment amount is not greater than the largest positive value among the candidate adjustment amounts of the first uplink power adjustment amount or the preset threshold. In this case, the adjustment accuracy of the uplink power can be improved.
  • the method further includes:
  • the terminal-side device determines the priority of the first uplink data according to the first downlink control information; the terminal-side device determines the priority of the second uplink data according to the second downlink control information; wherein
  • the first downlink control information indicates the priority of the first uplink data, the transmission format used by the first downlink control information indicates the priority of the first uplink data, or the first uplink data
  • the scrambling identifier used by a downlink control information indicates the priority of the first uplink data; the second downlink control information indicates the priority of the second uplink data, and the second downlink control information
  • the used transmission format indicates the priority of the second uplink data, or the scrambling identifier used by the second downlink control information indicates the priority of the second uplink data.
  • a fourth aspect of the embodiments of the present application provides an uplink power adjustment method, including the following content.
  • the access network side device determines the uplink power adjustment amount when the terminal side device sends uplink data
  • the access network side device sends downlink control information to the terminal side device, where the downlink control information indicates the uplink power adjustment amount;
  • the downlink control information when the priority of the uplink data is the first priority, the downlink control information indicates the uplink power adjustment amount from at least one candidate adjustment amount corresponding to the first priority; In a case where the priority of the uplink data is the second priority, the downlink control information indicates the uplink power adjustment amount from at least one candidate adjustment amount corresponding to the second priority;
  • the absolute value of the smallest negative value in the at least one candidate adjustment amount corresponding to the first priority is greater than or equal to the largest positive value in the at least one candidate adjustment amount corresponding to the second priority.
  • the absolute value of the smallest negative value in the at least one candidate adjustment corresponding to the first priority is greater than or equal to at least the one corresponding to the second priority The absolute value of the smallest negative value in a candidate adjustment.
  • the largest positive value among the at least one candidate adjustment amount corresponding to the first priority is Less than or equal to the largest positive value in at least one candidate adjustment amount corresponding to the second priority.
  • the access network side device determines the priority of the uplink data; wherein, the downlink The control information indicates the priority of the uplink data, the transmission format used by the downlink control information indicates the priority of the uplink data, or the scrambling identifier used by the downlink control information indicates the uplink data Priority.
  • a fifth aspect of the embodiments of the present application provides an uplink power adjustment method, including the following content.
  • the access network side device determines the first uplink power adjustment amount when the terminal side device sends the first uplink data
  • the access network side device determines the second uplink power adjustment amount when the terminal side device sends second uplink data; the access network side device sends second downlink control information to the terminal side device, and the first 2.
  • the downlink control information information indicates the second uplink power adjustment amount when sending the second uplink data;
  • the largest positive value of at least one candidate adjustment of the second uplink power adjustment is greater than or equal to the The largest positive value in at least one candidate adjustment for the first uplink power adjustment; or, in the case where the priority of the second uplink data is less than the priority of the first uplink data, and the second uplink
  • the absolute value of the smallest negative value in the at least one candidate adjustment of the power adjustment is greater than or equal to the largest positive value of the at least one candidate of the first uplink power adjustment.
  • the method further includes:
  • the access network side device sends a radio resource control RRC message to the terminal side device, where the RRC message indicates that when the priority of the second uplink data is higher than the priority of the first uplink data Or in a case where the priority of the second uplink data is less than the priority of the first uplink data, at least one candidate adjustment of the second uplink power adjustment and at least one of the first uplink power adjustment A candidate adjustment.
  • RRC message indicates that when the priority of the second uplink data is higher than the priority of the first uplink data Or in a case where the priority of the second uplink data is less than the priority of the first uplink data, at least one candidate adjustment of the second uplink power adjustment and at least one of the first uplink power adjustment A candidate adjustment.
  • the method further includes:
  • the first downlink control information indicates the priority of the first uplink data
  • the transmission format used by the first downlink control information indicates the priority of the first uplink data
  • the scrambling identifier indicates the priority of the first uplink data
  • the second downlink control information indicates the priority of the second uplink data
  • the transmission format used by the second downlink control information indicates all
  • the priority of the second uplink data or the scrambling identifier used by the second downlink control information indicates the priority of the second uplink data.
  • a sixth aspect of the embodiments of the present application provides an uplink power adjustment method, including the following content.
  • the access network side device determines the first uplink power adjustment amount when the terminal side device sends first uplink data; the access network side device sends the first downlink control information to the terminal side device, and the first Downlink control information indicates the first uplink power adjustment amount;
  • the access network side device determines the second uplink power adjustment amount when the terminal side device sends second uplink data; the access network side device sends second downlink control information to the terminal side device, and the first 2.
  • the downlink control information indicates the second uplink power adjustment amount;
  • the second uplink power adjustment is The absolute value of the smallest negative value in the at least one candidate adjustment amount is not less than the absolute value of the largest positive value or the smallest negative value in the at least one candidate adjustment amount of the first uplink power adjustment amount or the preset threshold.
  • the method further includes:
  • the first downlink control information indicates the priority of the first uplink data
  • the transmission format used by the first downlink control information indicates the priority of the first uplink data
  • the The scrambling identifier used by the first downlink control information indicates the priority of the first uplink data
  • the second downlink control information indicates the priority of the second uplink data
  • the second downlink control information indicates the priority of the second uplink data
  • the transmission format used by the information indicates the priority of the second uplink data
  • the scrambling identifier used by the second downlink control information indicates the priority of the second uplink data.
  • a seventh aspect of the embodiments of the present application provides a terminal-side device, where the terminal-side device includes a receiving unit and a processing unit.
  • the receiving unit is used to perform the receiving actions in the foregoing first aspect, second aspect, third aspect, or various possible implementation manners of these aspects
  • the processing unit is used to perform the foregoing first aspect, second In terms of processing actions, such as adjustment and determination in the third aspect or various possible implementation manners of these aspects.
  • the terminal-side device provided in the seventh aspect may be an independently sold terminal or a chip system that implements the terminal function.
  • the chip system includes a processor composed of at least one gate circuit and a memory composed of at least one gate circuit, each gate circuit includes at least one transistor (such as a field effect tube) connected by a wire, and each transistor is made of semiconductor material.
  • the receiving unit and the processing unit are respectively a receiving circuit and a processing circuit in specific implementation.
  • the terminal-side device may also It may include other electronic circuits, such as a circuit connecting the receiving circuit and the transmitting circuit, and a radio frequency antenna used for transmitting and receiving signals.
  • An eighth aspect of the embodiments of the present application provides an access network side device, where the access network side device includes a processing unit and a sending unit.
  • the processing unit is configured to perform processing actions such as determination in the foregoing fourth aspect, fifth aspect, sixth aspect, or various possible implementation manners of these aspects
  • the sending unit is configured to implement the first aspect, and the second aspect.
  • the access network side device provided in the eighth aspect may be an independently sold base station or a chip system that implements the function of the base station.
  • the chip system includes a processor composed of at least one gate circuit and a memory composed of at least one gate circuit, each gate circuit includes at least one transistor (for example, a field effect transistor) connected by a wire, and each transistor is made of semiconductor material. to make.
  • the processing unit and the sending unit are respectively a processing circuit and a sending circuit in specific implementation.
  • the access network side equipment may also include other electronic circuits, such as a circuit connecting the receiving circuit and the transmitting circuit, and a radio frequency antenna used for transmitting and receiving signals, and so on.
  • a ninth aspect of the embodiments of the present application provides a computer storage medium, where the computer storage medium includes program code, and when the program code is called, the first aspect, the second aspect, the third aspect, and the fourth aspect are implemented.
  • the technical solution provided by the ninth aspect has the technical effects of the foregoing corresponding implementation manner, and for details, reference may be made to the foregoing implementation manner. Description of the drawings
  • FIG. 1 is a schematic diagram of a wireless communication system architecture provided by an embodiment of the application
  • FIG. 2 is a schematic flowchart of an uplink power adjustment method provided by an embodiment of this application.
  • FIG. 3 is a schematic flowchart of another uplink power adjustment method provided by an embodiment of this application.
  • FIG. 4 is a schematic diagram of an uplink data transmission jump provided by an embodiment of the application.
  • FIG. 5 is a schematic flowchart of yet another uplink power adjustment method provided by an embodiment of this application.
  • FIG. 6 is a schematic structural diagram of a functional unit of a communication processing device provided by an embodiment of this application.
  • FIG. 7 is a schematic diagram of the hardware structure of a communication processing device provided by an embodiment of the application. detailed description
  • the wireless communication system includes a terminal side device and an access network side device, and optionally also includes a core network side device.
  • the wireless communication system may be a long-term evolution (LTE) system, or may be a fifth-generation mobile communication system (also known as a new radio (NR) communication system).
  • the terminal-side device may be an independently sold terminal or a chip system in the terminal.
  • the terminal is also called user equipment (UE) or mobile station (mobile station), including mobile phones, handheld Internet of Things devices, wearable devices (wearable devices), vehicle-mounted terminals, and so on.
  • the access network side device may be an independent wireless access device or a chip system in the wireless access device.
  • the wireless access device may be a base station of various communication standards. Base stations can be divided into two categories: macro base stations and small base stations, and small base stations are further divided into micro base stations, pico base stations, and so on.
  • the wireless LAN access point can be a router, a switch, and so on.
  • the terminal side device and the access network side device establish at least one radio bearer (RB) to transmit data.
  • the data may include signaling data or service data.
  • the radio bearer mainly used to transmit signaling data is a signaling radio bearer (signaling radio bearer, SRB), and the radio bearer mainly used to transmit service data is a data radio bearer (DRB).
  • the service data includes enhanced Mobile broadband (eMBB) data, massive machine type communication (mMTC) data, and ultra reliable and low latency communication (URLLC) data.
  • eMBB enhanced Mobile broadband
  • mMTC massive machine type communication
  • URLLC ultra reliable and low latency communication
  • different types of business data can correspond to different priorities, and different business data of the same type can also correspond to different priorities.
  • the priority is used to indicate the urgency of data transmission. The higher the priority, the more urgent the data transmission. For example, the priority of eMBB data is usually lower than that of URLLC data; different URLLC data can also correspond to different priorities.
  • the terminal-side device transmits uplink data with a certain priority (such as high-priority URLLC data) by increasing the uplink power to avoid other terminal-side devices from sending other-priority uplink data (such as low-priority).
  • a certain priority such as high-priority URLLC data
  • eMBB data enhanced mobile broadband
  • interference for example, interference generated on the same time-frequency resource.
  • the terminal-side device switches from sending uplink data with this priority to sending uplink data with other priorities, it may be necessary to reduce the uplink power to reduce interference to other terminal-side devices.
  • the uplink power of the terminal-side device cannot be quickly reduced, resulting in the inability to quickly reduce the interference to the other terminal-side devices.
  • multiple embodiments of the present application provide uplink power adjustment methods and related equipment when sending uplink data, which are specifically described as follows.
  • the uplink data may be service data such as the aforementioned URLLC data, eMBB data, and mMTC data; the uplink data may also be various uplink control signaling, such as radio resource control (Radio Resouce Control, RRC) signaling, mixed Automatic repeat request-acknowledgement/non-acknowledgement (Hybrid Automatic Repeat reQues t-acknowledgement/non acknowledgement, HARQ-ACK/NACK) information, etc.; the uplink data can also be randomly accessed to a preamble; the uplink data can also be It is an uplink reference signal, such as a sounding reference signal (SRS) and a demodulation reference signal (DMRS).
  • SRS sounding reference signal
  • DMRS demodulation reference signal
  • the foregoing service data is mainly carried in the physical uplink share channel (physical uplink share channel, PUSCH), a physical uplink control channel (PUCCH) that is also designed to be carried in the physical layer in some documents;
  • the aforementioned uplink control signaling can be mainly carried on the PUCCH, and in some documents It is also designed to be carried in the PUSCH (for example, HARQ-ACK/NACK can be carried in the PUSCH to test the capabilities of the access network side equipment);
  • the aforementioned random access preamble can be carried in the physical layer for physical random access Channel (physical random access channel, PRACH).
  • the uplink power adjustment mode in the technical solutions provided by the various embodiments of the present application is an accumulation mode.
  • the accumulation mode means that when the terminal-side device sends uplink data, the current uplink power is the received uplink power superimposed on the previous uplink power.
  • the uplink power adjustment amount indicated in the received downlink control information (for example, a TPC command).
  • the access network side device may measure the uplink power of the terminal side device, and use the difference between the measured uplink power and the preset uplink power as a reference for determining the uplink power adjustment amount.
  • the uplink power adjustment amount indicated by the TPC command is a positive value to increase the current uplink power; if the measured uplink power If the uplink power is higher than the preset uplink power, the uplink power adjustment amount indicated by the TPC command is a negative value to reduce the uplink power this time.
  • the first embodiment of the present application provides an uplink power adjustment method. As shown in FIG. 2, the method includes the following content.
  • a terminal side device receives downlink control information sent by an access network side device, where the downlink control information indicates an uplink power adjustment amount when sending uplink data.
  • the access network side may carry the downlink control information through a downlink control channel (phys i cal down l ink cont ro l channe l, PDCCH) in the physical layer.
  • the downlink control information includes a transmission power control (transmit power control, TPC) field, and the TPC field indicates an uplink power adjustment amount when sending uplink data.
  • TPC transmission power control
  • the candidate time-frequency resource location of the PDCCH is preset between the access network side device and the terminal side device, and may also be notified to the terminal side device by the access network side device through an RRC message, So that the terminal-side device blindly detects the PDCCH at the candidate time-frequency resource position of the PDCCH.
  • the process of sending the RRC message by the access network side device may be a random access process, the process of the terminal side device switching out or switching to the access network side device, or the terminal side device may be due to wireless The process of re-establishing the connection with the access network side device when the link fails, etc.
  • the terminal-side device may use an identifier specific to (spec ificto) the terminal-side device, an identifier specific to the terminal group to which the terminal-side device belongs, or an identifier specific to the cell where the terminal-side device is located. Identify, blindly check the PDCCH, so as to obtain the downlink control information.
  • the identifier is a radio network temporary identifier (rad io ne twork t emporary i dent i ty, RNTI).
  • the DCI format 0-0 and the DCI format 0-1 are specific to the terminal side.
  • the terminal-side device may use the RNTI specific to the terminal-side device to receive the two types of DCI.
  • the DCI format 2_2 is a DCI scrambled using the RNTI specific to the terminal group, and the side device can receive this DCI using the RNTI specific to the terminal group.
  • the downlink control information is selected from at least one candidate adjustment corresponding to the first priority Indicating the uplink power adjustment amount; in the case where the priority of the uplink data is the second priority, the downlink control information indicates the at least one candidate adjustment amount corresponding to the second priority Uplink power adjustment amount.
  • the at least one candidate adjustment amount corresponding to the first priority and the at least one candidate adjustment amount corresponding to the second priority may be partly different, or all may be different.
  • the absolute value of the smallest negative value in the at least one candidate adjustment corresponding to the first priority is greater than or equal to the largest positive value in the at least one candidate adjustment corresponding to the second priority.
  • the maximum reduction degree of the uplink power adjustment amount corresponding to the first priority is higher than the maximum increase degree of the uplink power adjustment amount corresponding to the second priority, even if the terminal side transfers from the uplink data of the second priority.
  • the interference to other terminal side devices especially the interference on the same time-frequency resource
  • the first priority is lower than the second priority.
  • the uplink data is eMBB data
  • the second priority is the priority of URLLC data
  • the uplink data is URLLC data.
  • the access network side equipment generally arranges as soon as possible the high-priority data or high-quality resource locations to transmit.
  • the priority level can be indicated by the service type. For example, for service type eMBB data and URLLC data, the priority of eMBB data is lower than that of URLLC data.
  • the level of priority can also be indicated by the level of QoS (qua li ty of service, QoS) requirements.
  • data with a higher QoS requirement has a higher priority
  • data with a lower QoS requirement has a lower priority.
  • the priority of the first URLLC data is higher than the priority of the second URLLC data.
  • the absolute value of the smallest negative value in the at least one candidate adjustment corresponding to the first priority is greater than or equal to the absolute value of the smallest negative value in the at least one candidate adjustment corresponding to the second priority.
  • the largest positive value in the at least one candidate adjustment corresponding to the first priority is less than or equal to the largest positive value in the at least one candidate adjustment corresponding to the second priority.
  • the method further includes: the terminal-side device determining the priority of the uplink data according to the downlink control information; wherein the priority of the uplink data is indicated in the downlink control information,
  • the transmission format used by the downlink control information indicates the priority of the uplink data, or the scrambling identifier used by the downlink control information indicates the priority of the uplink data.
  • a field composed of at least one bit in the downlink control information indicates the priority of the uplink data
  • the terminal-side device can clarify the priority of the uplink data by reading the field.
  • the field may be a data type field, and when the field indicates the data type of the uplink data, the terminal-side device may determine the priority of the uplink data according to the data type.
  • the field may also be a mapping type (mapping type) field defined in the NR system.
  • mapping type B mapping type
  • the priority of the uplink data is the priority of the URLLC data
  • the priority of the uplink data is lower than the priority of the URLLC data.
  • the transmission format of the downlink control information indicates the priority of the uplink data. For example, when the downlink control information is a transmission format corresponding to URLLC data, the terminal-side device may determine that the uplink data is high-priority data; when the downlink control information is a transmission format corresponding to eMBB data, the terminal The side device may determine the lower priority data of the uplink data compared to the URLLC data.
  • the scrambling identifier of the downlink control information is used to perform a cyclic redundancy check (cyc l ic redundancy check, CRC) on the downlink control information.
  • the scrambling identifier may be an identifier specific to the terminal-side device, such as the aforementioned specific RNTI of the terminal-side device; the scrambling identifier may also be an identifier specific to the terminal group to which the terminal-side device belongs, or may be an identifier of the serving cell where the terminal-side device is located.
  • the terminal-side device adjusts the uplink power according to the uplink power adjustment amount.
  • the upstream data is carried on the PUSCH as an example.
  • the terminal-side equipment can be as follows Formula adjust the uplink power of the PUSCH:
  • P CMA x ,/, e is the maximum allowable transmit power corresponding to the PUSCH transmission opportunity i of carrier f on serving cell c.
  • P O_PUSCH , 6,/, n is the single resource block expected to be received ( resource block, RB), the value is related to the parameter j, which is configured by the access network side device through RRC messages.
  • PL bJ , people q d is the downlink path loss estimation, where is the reference signal index used for the downlink path loss estimation. (7) is the path loss compensation factor. All are configured by RRC messages and are open-loop power control parameters.
  • a TF,6,/e ( Z' ) is the transmit power offset, which is suitable for single-multiple-input-multiple-output (mut ip le input mul t ip le output, MIMO) layer transmission scenarios. It is used to describe different adjustment methods and codes. The expected received power offset caused by the rate change.
  • 101og 10 (2 ⁇ Mä ® (0) represents the transmit and receive power It is proportional to the allocated transmission bandwidth.
  • / 6Xe (U) is the amount of uplink power adjustment indicated in the downlink control information (such as the TPC command). Among them, is the closed loop
  • a serving cell can be configured with at most two closed-loop power control processes.
  • different priorities correspond to a set of candidate adjustments.
  • the access network side device and the terminal side device can compare the set of candidate adjustments corresponding to the priority of the current uplink data with the downlink control
  • the candidate bit state of the information corresponds.
  • the access network side device may indicate to the terminal side device which of the set of candidate adjustment amounts is the actual uplink power adjustment amount through the actual bit state in the downlink control information.
  • the absolute value of the smallest negative value in the group of candidate adjustments corresponding to the first priority is greater than or equal to the The largest positive value in the group of candidate adjustments corresponding to the second priority, even if the terminal side device switches from sending the uplink data of the second priority to sending the uplink data of the first priority, because the first priority
  • the candidate adjustment amount corresponding to a priority has a larger negative absolute value, so that the uplink power can be reduced more quickly, thereby reducing interference to other terminal side devices.
  • the second embodiment of the present application provides an uplink power adjustment method, as shown in FIG. 3, including the following content.
  • a terminal side device receives first downlink control information sent by an access network side device, where the first downlink control information indicates a first uplink power adjustment amount when sending first uplink data.
  • the manner in which the terminal-side device in 301 receives the first downlink control information is similar to the manner in which the terminal-side device in 201 receives downlink control information. For details, refer to 201.
  • the terminal-side device adjusts the uplink power according to the first uplink power adjustment amount.
  • the manner in which the terminal-side device adjusts the first uplink power in 302 is the same as the manner in which the terminal-side device adjusts the uplink power in 202
  • the power method is similar, please refer to 202.
  • the terminal-side device receives second downlink control information sent by the access network-side device, where the second downlink control information information indicates a second uplink power adjustment amount when sending second uplink data.
  • the manner in which the terminal-side device in 303 receives the second downlink control information is similar to the manner in which the terminal-side device in 201 receives the downlink control information. For details, refer to 201.
  • the terminal-side device adjusts the uplink power again according to the second uplink power adjustment amount and the adjusted uplink power.
  • the manner in which the terminal-side device adjusts the uplink power again in 304 is similar to the manner in which the terminal-side device adjusts the uplink power in 202. Refer to 202.
  • the largest positive value among at least one candidate adjustment amount of the second uplink power adjustment amount is greater than or equal to the largest positive value of at least one candidate adjustment amount of the first uplink power adjustment amount (for example, the candidate adjustment amount 2 in Table 2).
  • the first uplink data is low-priority data
  • the second uplink data is high-priority data.
  • the terminal-side device switches from sending low-priority data to sending high-priority data. Level data.
  • the uplink power when sending high-priority data can be increased faster, avoiding interference with high-priority data, especially by other terminal-side devices.
  • the smallest negative value among at least one candidate adjustment of the second uplink power adjustment is greater than or equal to the largest positive value of at least one candidate adjustment of the first uplink power adjustment (for example, candidate adjustments 3 and 4 in Table 2).
  • the first uplink data is high priority data
  • the second uplink data is low priority data. The terminal side device switches from sending high-priority data to sending low-priority data.
  • the uplink power when sending low-priority data can be reduced faster, avoiding interference caused by low-priority data as much as possible, especially for other terminals.
  • the absolute value of the smallest negative value in the at least one candidate adjustment of the second uplink power adjustment is greater than Or equal to the first upward power
  • the absolute value of the smallest negative value among at least one candidate adjustment amount of the rate adjustment amount for example, candidate adjustment amount 2 in Table 2).
  • the terminal-side device switches from sending high-priority data to sending low-priority data.
  • the accuracy with which the uplink power can be adjusted when sending low-priority data is another possible implementation, as shown in 410 and 430 in Figure 4,
  • the priority of the second uplink data is equal to the priority of the first uplink data
  • the indicated second power adjustment amounts are all non-negative values or non-positive values.
  • the priority of the uplink data sent by the terminal-side device has not changed. Therefore, if the uplink power of the terminal-side device is increased when sending the first uplink data, it will send the second uplink data.
  • the uplink power is still increased; if the uplink power of the terminal-side device is decreased when the first uplink data is sent, the uplink power is still decreased when the second uplink data is sent. Therefore, it is avoided that after the information on the adjustment direction (boosted or decreased) of the uplink power when the terminal side device sends the first uplink data is lost, the adjustment direction of the uplink power when sending the second uplink data is inconsistent.
  • the terminal-side device receives a radio resource control RRC message sent by the access network-side device, where the RRC message indicates that the priority of the second uplink data is higher than that of the first In the case of the priority of the uplink data or in the case that the priority of the second uplink data is less than the priority of the first uplink data, at least one candidate adjustment of the second uplink power adjustment and the At least one candidate adjustment of the first uplink power adjustment.
  • the terminal-side device can easily implement the above technical solution, thereby obtaining the required candidate adjustment amount.
  • the method further includes: determining the priority of the first uplink data by the terminal-side device according to the first downlink control information; and the terminal-side device according to the second downlink control The information determines the priority of the second uplink data.
  • the first downlink control information indicates the priority of the first uplink data
  • the transmission format used by the first downlink control information indicates the priority of the first uplink data
  • the second downlink control information indicates the priority of the second uplink data
  • the second downlink control information indicates the priority of the second uplink data
  • the second downlink control information indicates the priority of the second uplink data
  • the second downlink control information indicates the priority of the second uplink data
  • the second downlink control information indicates the priority of the second uplink data
  • the second downlink control information indicates the priority of the second uplink data
  • the second downlink control information indicates the priority of the second uplink data.
  • This optional implementation manner is similar to the manner of identifying the priority of uplink data in the first embodiment. For details, refer to the related description of the first embodiment.
  • the third embodiment of the present application provides an uplink power adjustment method, as shown in FIG. 5, including the following content.
  • a terminal-side device receives first downlink control information sent by an access network-side device, where the first downlink control information indicates a first uplink power adjustment amount when sending first uplink data.
  • the manner in which the terminal-side device in 501 receives the first downlink control information is similar to the manner in which the terminal-side device in 201 receives downlink control information. For details, refer to 201.
  • the terminal-side device adjusts the uplink power according to the first uplink power adjustment amount.
  • the manner in which the terminal-side device adjusts the first uplink power in 502 is similar to the manner in which the terminal-side device adjusts the uplink power in 202, and may refer to 202.
  • the terminal side device receives second downlink control information sent by the access network side device, where the second downlink control information information indicates a second uplink power adjustment amount when sending second uplink data.
  • the manner in which the terminal-side device in 503 receives the second downlink control information is similar to the manner in which the terminal-side device in 201 receives the downlink control information. For details, refer to 201.
  • the terminal-side device adjusts the uplink power again according to the second uplink power adjustment amount and the adjusted uplink power.
  • the manner in which the terminal-side device adjusts the uplink power again in 504 is similar to the manner in which the terminal-side device adjusts the uplink power in 202. Refer to 202.
  • the priority of the first uplink data is high priority
  • at least one candidate adjustment amount of the first uplink power adjustment amount is a candidate specific to the first uplink data Adjustment amount (such as the candidate adjustment amount X corresponding to URLLC data in Table 3
  • the priority of the first uplink data (such as URLLC data in Table 3) is higher than that of the second uplink data (such as eMBB data in Table 3).
  • the first uplink power adjustment is greater than or equal to the preset threshold, at least one candidate adjustment of the second uplink power adjustment (for example, candidate adjustment 1 corresponding to eMBB data in Table 3)
  • the absolute value of the smallest negative value in the first uplink power adjustment amount is not less than the absolute value of the largest positive value or the smallest negative value among at least one candidate adjustment amount of the first uplink power adjustment amount or the preset threshold value.
  • the at least one candidate adjustment of the second uplink power adjustment follows the candidate adjustment defined by the traditional technology (for example, in the 3GPP NR standard version 15), for example, the candidate adjustment 2 corresponding to the eMBB data in Table 3 .
  • the preset threshold may be the largest positive value among the candidate adjustments defined by the traditional technology (for example, 3dB), or it may be the largest positive value among the candidate adjustments specific to the first uplink data (for example, table The URLLC data in 3 corresponds to 5dB).
  • the preset threshold value may be configured by the access network side device to the terminal side device through an RRC message, or may be preset in the terminal side device when the terminal side device is manufactured.
  • the method further includes: determining the priority of the first uplink data by the terminal-side device according to the first downlink control information; and the terminal-side device according to the second downlink control information; The control information determines the priority of the second uplink data.
  • the first downlink control information indicates the priority of the first uplink data
  • the transmission format used by the first downlink control information indicates the priority of the first uplink data
  • the first down The scrambling identifier used by the row control information indicates the priority of the first uplink data
  • the second downlink control information indicates the priority of the second uplink data
  • the second downlink control information uses The transmission format indicates the priority of the second uplink data
  • the scrambling identifier used by the second downlink control information indicates the priority of the second uplink data.
  • At least one candidate adjustment value of the uplink power adjustment value of the high-priority uplink data is a candidate adjustment value specific to the high-priority uplink data (as shown in the URLLC data in Table 3). The corresponding candidate adjustment amount).
  • the candidate adjustment amount of the uplink power is related to the adjustment amount of the uplink power that transmits the high priority.
  • the uplink power adjustment amount when sending low-priority uplink data is equal to
  • the absolute value of the smallest negative value in at least one candidate adjustment value is not less than the absolute value of the largest positive value or the smallest negative value in the at least one candidate adjustment value corresponding to the high-priority uplink data or the preset threshold (for example, the eMBB data corresponding to Table 3 Candidate adjustment 1); otherwise, for other cases, the candidate adjustment defined by traditional technology is used (for example, the candidate adjustment 1 X corresponding to the eMBB data in Table 3)
  • the fourth embodiment of the present application provides a communication processing device 600, as shown in FIG. 6 is a schematic structural diagram of the communication processing device.
  • the communication processing device 600 may be the terminal-side device in the foregoing first, second, or third embodiment or the chip system in the terminal-side device.
  • the communication processing device 600 includes a receiving unit 601 and a processing unit 602.
  • the receiving unit 601 is configured to execute the receiving action of the terminal-side device in any one of the foregoing first, second, and third embodiments
  • the processing unit 602 is configured to execute the foregoing first Processing actions such as adjustment and determination of the terminal-side device in any one of the embodiment, the second embodiment, and the third embodiment.
  • the communication processing device 600 further includes a sending unit 603, configured to send uplink data to the access network side device using the adjusted uplink power.
  • the communication processing device 600 may be the access network side device or the chip system in the access network side device in the foregoing first, second, or third embodiment.
  • the communication processing device 600 includes a processing unit 602 and a sending unit 603.
  • the processing unit 602 is configured to perform processing actions such as determination of the access network side device in any one of the foregoing first, second, and third embodiments; the sending unit 603 uses To perform the sending action of the access network side device described in any one of the foregoing first embodiment, second embodiment, and third embodiment.
  • the communication processing device 600 further includes a receiving unit 601, configured to receive uplink data sent by the terminal-side device.
  • the receiving unit 601, the processing unit 602, and the sending unit 603 are the receiving circuit 701, the processing circuit 702, and the sending circuit 703 as shown in FIG. 7, respectively.
  • the processing circuit for example, in the form of at least one processor (proces s or), implements processing actions such as generation, adjustment, and determination of the foregoing various messages.
  • the communication processing device 600 may further include a radio frequency antenna 704, a bus and a communication interface 705 for transmitting and receiving wireless signals in a wireless communication system, and so on.
  • the bus may be a peripheral component interconnect standard (PCI) bus or an extended industry standard architecture (extended industrial standard architecture, EISA) bus, etc.
  • PCI peripheral component interconnect standard
  • EISA extended industry standard architecture
  • the communication interface may be a wired communication interface, a wireless communication interface or a combination, where the wired communication interface may be, for example, an Ethernet interface.
  • the Ethernet interface may be an optical interface, an electrical interface or a combination thereof; the wireless communication interface may be a wireless local area network interface.
  • the communication processing device 500 includes a processor and a memory, and the memory stores a computer program.
  • the computer program can execute the terminal side in each of the foregoing method embodiments. Action performed by the device or the device on the access network side.
  • the computer program contains multiple data structures, and each data structure is used to implement the functions of each protocol layer defined in the 3GPP standard.
  • the application of the communication processing device provided by the fourth embodiment can solve the technical problems in the foregoing method embodiments and achieve corresponding technical effects. For details, please refer to the foregoing method embodiments.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present invention may adopt a form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention can be in the form of a computer program product implemented on one or more chip systems or computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes. .
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so that the computer or other programmable equipment is executed
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

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

Abstract

L'invention concerne un procédé de réglage de puissance de liaison montante. Selon ce procédé, la valeur absolue de la valeur négative minimale dans au moins une quantité de réglage candidate de puissance de liaison montante, lorsqu'un dispositif côté terminal envoie un service à faible priorité, n'est pas inférieure à la valeur positive maximale dans au moins une quantité de réglage candidate de puissance de liaison montante lorsqu'un service à priorité élevée est envoyé. Par conséquent, le degré, auquel la puissance de liaison montante peut être réduite le plus rapidement lorsque le dispositif côté terminal envoie un service à faible priorité selon l'instruction d'un dispositif côté réseau d'accès, n'est pas inférieur au degré auquel la puissance de liaison montante peut être augmentée le plus rapidement lorsqu'un service à priorité élevée est envoyé. Même dans un scénario dans lequel le dispositif côté terminal envoyant un service à priorité élevée effectue une commutation pour envoyer un service à faible priorité, la puissance de liaison montante pour envoyer le service à faible priorité peut être rapidement réduite de façon à réduire les interférences avec un autre dispositif côté terminal.
PCT/CN2020/076631 2019-02-27 2020-02-25 Procédé de réglage de puissance de liaison montante et dispositif associé WO2020173437A1 (fr)

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