CN110650522B - Closed-loop power control method, network side equipment and terminal - Google Patents

Closed-loop power control method, network side equipment and terminal Download PDF

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Publication number
CN110650522B
CN110650522B CN201810670617.2A CN201810670617A CN110650522B CN 110650522 B CN110650522 B CN 110650522B CN 201810670617 A CN201810670617 A CN 201810670617A CN 110650522 B CN110650522 B CN 110650522B
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terminal
tpc command
rsrp
power
power control
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CN110650522A (en
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李岩
侯雪颖
郑毅
王飞
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
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    • 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
    • H04W52/08—Closed loop 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
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure

Abstract

The invention provides a closed-loop power control method, network side equipment and a terminal. The method comprises the following steps: configuring at least one Transmit Power Control (TPC) command table, and when the configured TPC command table is one, the TPC command table comprises at least four TPC command domain parameters, or when the configured TPC command table is one, the TPC command table comprises at least two TPC command domain parameters, wherein at least one TPC command domain parameter corresponds to at least one step size adjustment parameter. The method can lead the terminal to select the adjusting parameter with larger adjusting step length to carry out power adjustment by increasing the diversity of the configured TPC command table so as to carry out real-time and rapid transmission power adjustment.

Description

Closed-loop power control method, network side equipment and terminal
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to a closed-loop power control method, a network side device, and a terminal.
Background
When the terminal is in low-altitude communication, due to factors such as building shielding, a channel is mainly a non-line-of-sight path, and the terminal has small interference to an adjacent cell; along with the rise of the height of the terminal, when the communication is carried out at high altitude, the channel is mainly a line-of-sight path, the uplink signal of the terminal generates serious interference to users of adjacent cells, and the number of the affected adjacent cells is large.
In addition, in the process of the terminal rapidly ascending in the vertical dimension, the interference intensity to the adjacent cell is rapidly changed, so that the transmitting power of the terminal needs to be rapidly adjusted; in the middle-low height horizontal dimension flight, the terminal is influenced by the shielding of surrounding buildings to cause the rapid change of the interference intensity, and the terminal transmitting power also needs to be rapidly adjusted.
Currently, the existing control scheme for performing power control on a terminal is as follows:
P T ＝min{P CMAX ,P 0 +α·PL+10log 10 (M)+△ TF +f}[dBm]
wherein the content of the first and second substances,
P CMAX : representing the maximum transmission power of the terminal;
P 0 : represents the sum of a common power level and a terminal-specific power level for all terminals in the cell;
α: representing an open loop path loss compensation portion;
PL: the representation represents the path loss;
m: indicating the number of Resource Blocks (RBs) allocated;
△ TF : indicates the power offset corresponding to different modulation coding modes,
f: represents an adjustment amount in the case of a Transmit Power Control (TPC) command;
according to the power control mode, TPC command adjustment parameters in the existing closed loop power control comprise { -1,0,1,3}, which can only reduce 1dB at most each time when power adjustment is carried out, and real-time and rapid transmission power adjustment cannot be realized for a terminal with strong uplink interference.
Disclosure of Invention
The invention aims to provide a closed-loop power control method, network side equipment and a terminal, which are used for solving the problem that the closed-loop power control in the prior art cannot meet the requirements of real-time performance and rapidity of the terminal for adjusting the transmitting power.
The embodiment of the invention provides a closed-loop power control method, which is applied to network side equipment, wherein the method comprises the following steps:
configuring at least one Transmit Power Control (TPC) command table, and when the configured TPC command table is one, the TPC command table comprises at least four TPC command domain parameters, or when the configured TPC command table is one, the TPC command table comprises at least two TPC command domain parameters, wherein at least one TPC command domain parameter corresponds to at least one step size adjustment parameter.
Optionally, in the closed-loop power control method, the number of the configured TPC command tables is at least two, and in different TPC command tables, adjustment step sizes corresponding to TPC command field parameters included in the TPC command tables are different.
Optionally, the closed loop power control method further includes:
selecting one of the TPC command tables as a selected table among the configured at least two TPC command tables.
Optionally, in the closed-loop power control method, the power configuration signaling of the selected table is sent to the terminal through downlink control information DCI or radio resource control RRC information.
Optionally, the closed loop power control method further includes:
selecting one of at least two TPC command tables as the selected table according to parameter information of at least one of:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
Optionally, in the closed loop power control method, at least one of the configured at least two TPC command tables includes at least two TPC command field parameters, where at least one TPC command field parameter corresponds to at least one step size adjustment parameter.
The embodiment of the invention also provides another closed-loop power control method which is applied to a terminal, wherein the method comprises the following steps:
acquiring a power configuration signaling sent by network side equipment;
wherein the power configuration signaling is derived from a TPC command table comprising at least four TPC command domain parameters; or the power configuration signaling is derived from a TPC command table comprising at least two TPC command field parameters, wherein at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter.
Optionally, the closed loop power control method, wherein when the power configuration signaling is derived from a TPC command table including at least two TPC command field parameters, where at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter, the method further includes: and selecting one step length adjusting parameter in the TPC command domain parameters corresponding to the DCI triggering instruction to carry out power adjustment.
Optionally, in the closed loop power control method, according to at least one of the following parameter information, one step size adjustment parameter in the TPC command field parameter corresponding to the DCI trigger instruction is selected to perform power adjustment:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
Optionally, the closed loop power control method further includes:
reporting at least one of the following parameter information to the network side equipment:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
Optionally, in the closed-loop power control method, the power configuration signaling is obtained through downlink control information DCI or radio resource control RRC information.
The embodiment of the present invention further provides a network side device, which includes a processor and a transceiver, wherein:
the processor is configured to configure at least one Transmit Power Control (TPC) command table, and when the configured TPC command table is one, the TPC command table includes at least four TPC command domain parameters, or when the configured TPC command table is one, the TPC command table includes at least two TPC command domain parameters, wherein at least one TPC command domain parameter corresponds to at least one step size adjustment parameter.
Optionally, the network side device includes at least two configured TPC command tables, and the adjustment step sizes corresponding to the TPC command field parameters in the different TPC command tables are different.
Optionally, the network-side device, wherein the processor is further configured to:
selecting one of the TPC command tables as a selected table among the configured at least two TPC command tables.
Optionally, the network-side device, wherein the transceiver is configured to:
and sending the power configuration signaling of the selected table to a terminal through Downlink Control Information (DCI) or Radio Resource Control (RRC) information.
Optionally, the network side device, wherein the processor is configured to:
selecting one of at least two TPC command tables as the selected table according to parameter information of at least one of:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
Optionally, in the network side device, in at least two configured TPC command tables, at least one of the TPC command tables includes at least two TPC command field parameters, where at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter.
The embodiment of the present invention further provides a terminal, which includes a processor and a transceiver, wherein:
the processor is used for acquiring a power configuration signaling sent by the network side equipment;
wherein the power configuration signaling is derived from a TPC command table comprising at least four TPC command domain parameters; or the power configuration signaling is derived from a TPC command table comprising at least two TPC command field parameters, wherein at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter.
Optionally, the terminal, wherein the processor is further configured to:
when the power configuration signaling is from a TPC command table comprising at least two TPC command domain parameters, wherein at least one TPC command domain parameter corresponds to at least one step size adjustment parameter, one step size adjustment parameter in the TPC command domain parameters corresponding to a downlink control information DCI trigger instruction is selected for power adjustment.
Optionally, the terminal, wherein the processor is specifically configured to:
selecting one step length adjusting parameter in the TPC command domain parameter corresponding to the DCI triggering instruction to carry out power adjustment according to at least one of the following parameter information:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
Optionally, the terminal, wherein the transceiver is configured to:
reporting at least one of the following parameter information to the network side equipment:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
Optionally, in the terminal, the processor acquires the power configuration signaling through downlink control information DCI or radio resource control RRC information.
The embodiment of the invention also provides communication equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can be operated on the processor; wherein the processor performs the closed loop power control method as defined in any one of the above.
Embodiments of the present invention also provide a computer readable storage medium, on which a computer program is stored, where the program, when executed by a processor, implements the steps in the closed loop power control method as described in any one of the above.
At least one of the above technical solutions of the specific embodiment of the present invention has the following beneficial effects:
the embodiment of the invention provides a closed-loop power control method, which is characterized in that at least one transmitting power control TPC command table is configured, and the diversity of the configured TPC command table is increased, so that the requirement of a terminal for real-time and rapid transmitting power adjustment can be met, and the terminal selects an adjustment parameter with a large adjustment step length to perform power adjustment so as to perform real-time and rapid transmitting power adjustment.
Drawings
Fig. 1 is a schematic diagram of a wireless communication system to which the closed-loop power control method according to the embodiment of the present invention is applied;
fig. 2 is a schematic flowchart of a first implementation of a closed-loop power control method according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of a second implementation of the closed-loop power control method according to the embodiment of the present invention;
FIG. 4 is a flowchart illustrating a third embodiment of a closed-loop power control method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another communication device in the embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The closed-loop power control method, the terminal and the network side equipment provided by the embodiment of the invention can be applied to a wireless communication system. The wireless communication system may be a 5G system, an Evolved Long Term Evolution (lte) system, or a subsequent lte communication system. Referring to fig. 1, an architecture diagram of a wireless communication system according to an embodiment of the present invention is shown. As shown in fig. 1, the wireless communication system may include: the network side device 10 and the terminal UE, for example, the terminal is denoted as UE11. In practical applications, the connections between the above devices may be wireless connections, and fig. 1 illustrates the connections between the devices by solid lines for convenience and convenience in visual representation.
It should be noted that the communication system may include a plurality of UEs, and the network side device may communicate (transmit signaling or transmit data) with the plurality of UEs.
The network side device 10 provided in the embodiment of the present invention may be a base station, which may be a commonly used base station, an evolved node base station (eNB), or a network side device in a 5G system (for example, a next generation base station (gNB), a Transmission and Reception Point (TRP), or a cell) and the like.
The terminal provided by the embodiment of the invention can be an unmanned aerial vehicle, a Mobile phone, a tablet Computer, a notebook Computer, a super-Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA) and the like.
Preferably, the terminal is an unmanned aerial vehicle, and by adopting the closed-loop power control method provided by the embodiment of the invention, the unmanned aerial vehicle can quickly adjust the transmitting power in the vertical dimension rapid lift-off process and in the middle-low height horizontal dimension flight.
In order to solve the problem that closed loop power control in the prior art cannot achieve real-time and rapid transmit power adjustment, an embodiment of the present invention provides a closed loop power control method, where at least one transmit power control TPC command table is configured, and when the number of the configured TPC command tables is one, the TPC command table includes at least four step size adjustment parameters, or the TPC command table includes at least two TPC command field parameters, where at least one TPC command field parameter corresponds to at least one step size adjustment parameter, so that diversity of the configured TPC command tables is increased, and a requirement of a terminal for performing real-time and rapid transmit power adjustment is met.
Specifically, as shown in fig. 2, one implementation of the closed-loop power control method according to the embodiment of the present invention is applied to a network side device, and the method includes:
s210, configuring at least one transmit power control TPC command table, and when the configured TPC command table is one, the TPC command table includes at least four TPC command field parameters, or when the configured TPC command table is one, the TPC command table includes at least two TPC command field parameters, wherein at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter.
Optionally, each TPC command field parameter may correspond to a Downlink Control Information (DCI) trigger instruction.
In step S210, the configured TPC command table may be one, and when the configured TPC command table is one, the TPC command table includes at least four TPC command field parameters, for example, a TPC command table including five TPC command field parameters may be configured, as shown in table 1 below:
TABLE 1
Figure BDA0001708082090000071
Compared with the prior art that the TPC command table comprises four TPC command domain parameters, the TPC command domain parameters are added in the TPC command table by adopting the mode, so that the terminal can adopt the TPC command domain parameters with larger adjustment step size to carry out closed-loop power adjustment.
It can be understood that, in the embodiment of the present invention, each TPC command field parameter corresponds to a DCI trigger instruction, that is, one TPC command field parameter may be triggered by one DCI instruction.
Optionally, in step S210, the configured TPC command tables may be one, and when the configured TPC command tables are one, the TPC command tables include at least two TPC command field parameters, where at least one TPC command field parameter corresponds to at least one step size adjustment parameter.
Based on the setting mode, one TPC command field parameter may correspond to two, three, or more step size adjustment parameters, and when the TPC command field parameter corresponding to two, three, or more step size adjustment parameters is triggered by a corresponding DCI instruction, the terminal may select one of the step size adjustment parameters for closed-loop power control adjustment; optionally, when the terminal is currently in a preset condition that power needs to be adjusted quickly, a step size adjustment parameter with a larger adjustment step size may be selected from the multiple step size adjustment parameters to perform closed-loop power control adjustment, so as to implement real-time performance and quickness of transmit power adjustment.
For example, the TPC command table may be formed as the following table 2, and the TPC command table has four TPC command field parameters, { -1, -3, -5}, {0}, {1,2,3}, and {4,5,6}, where each TPC command field parameter corresponds to a DCI trigger command, and the four TPC command field parameters respectively correspond to at least one step size adjustment parameter, preferably at least two step size adjustment parameters, so that the terminal can select a step size adjustment parameter with a larger adjustment step size from the TPC command field parameters indicated by the corresponding DCI trigger command for closed-loop power adjustment.
TABLE 2
Figure BDA0001708082090000081
In addition, in step S210, the number of the configured TPC command tables may be at least two, and optionally, the adjustment step sizes corresponding to the TPC command field parameters included in the different TPC command tables are different.
For example, the network side device may configure two TPC command tables, which are { -1,0,1,3} and { -3,0,1,3}, respectively, and the adjustment step sizes of the corresponding TPC command field parameters are different.
By adopting the mode, through increasing the number of the configured TPC command tables, when the terminal meets the preset condition that the power needs to be quickly adjusted, one TPC command table with larger adjustment step length can be selected to carry out closed-loop power adjustment so as to quickly adjust the transmitting power in real time.
In addition, optionally, at least one of the configured at least two TPC command tables includes at least two TPC command field parameters, where at least one TPC command field parameter corresponds to at least one step size adjustment parameter, as shown in table 2.
Based on the setting mode, when the network side device selects one of the at least two configured TPC command tables to send to the terminal, the network side device may select a TPC command table including at least two TPC command field parameters, where the TPC command table corresponding to at least one step size adjustment parameter in the at least one TPC command field parameter is sent to the terminal, so that the terminal can select a step size adjustment parameter with a larger adjustment step size from the TPC command field parameters indicated by the corresponding DCI trigger instruction to perform closed-loop power adjustment.
Another implementation manner of the closed-loop power control method according to the embodiment of the present invention is applied to a network side device, as shown in fig. 3, after step S210, the method further includes:
s220, selecting one TPC command table from the at least two configured TPC command tables as a selected table;
and S230, sending the power configuration signaling of the selected table to the terminal through downlink control information DCI or radio resource control RRC information.
Optionally, in step S220, one of the at least two TPC command tables is selected as the selected table according to parameter information of at least one of the following:
a difference between Reference Signal Receiving Power (RSRP) of a cell in which the terminal is located and RSRP of a neighboring cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the Signal to Interference plus Noise Ratio (SINR) of the terminal.
In addition, optionally, in step S220, when it is determined that the terminal is currently in the preset condition that power needs to be quickly adjusted, the TPC command table with a larger adjustment step corresponding to the included TPC command field parameter is selected as the selected table from the at least two configured TPC command tables.
Optionally, the method further comprises: when the terminal is judged to meet at least one of the following conditions, determining that the terminal is in the preset condition at present:
a difference value between Reference Signal Receiving Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell is smaller than a first preset value;
a Channel Quality Indicator (CQI) of the terminal is less than a second preset value;
the current height of the terminal is greater than a third preset value;
and the Signal to Interference plus Noise Ratio (SINR) of the terminal is less than a fourth preset value.
In step S230, the power configuration signaling of the selected table is sent to the terminal through DCI or RRC information, so that the terminal performs closed-loop power adjustment according to the step size adjustment parameter in the selected table.
It can be understood that the terminal may report the RSRP of the cell where the terminal is located, the channel quality indication and the SINR of the terminal to the network side device, so that when the network side device determines that the terminal needs to perform power fast adjustment currently according to the parameter information reported by the terminal, the TPC command table with a larger adjustment step corresponding to the included TPC command field parameter is selected as a selected table from the at least two configured TPC command tables, and the selected table is sent to the terminal, so that the terminal can perform transmit power adjustment fast in real time.
For example, the first preset value may be 6dB, the second preset value may be 5, and the third preset value may be 100m, when the network side device determines, according to the RSRP reported by the terminal, that a difference between the RSRP of the cell where the terminal is located and the RSRP of the neighboring cell is less than 6dB, or the network side device determines that the CQI reported by the terminal is less than 5, or the network side device determines that the height of the terminal is greater than 100m, the network side device may select, through RRC signaling or DCI, a TPC command table having TPC command field parameters { -3,0,1,3} from 2 closed-loop power control parameter tables having TPC command field parameters { -1,0,1,3} and configure the TPC command table having TPC command field parameters { -3,0,1,3} to the terminal, so as to perform closed-loop power control.
Optionally, in step S230, the selected table in the power configuration signaling sent to the terminal includes at least two TPC command field parameters, and each TPC command field parameter corresponds to at least one step size adjustment parameter; wherein, each TPC command field parameter corresponds to a DCI trigger instruction. If the selected table is the structure as shown in table 2 above, each TPC command field parameter corresponds to a DCI trigger instruction, and the four TPC command field parameters correspond to at least one step size adjustment parameter, preferably at least two step size adjustment parameters, respectively, so that the terminal can select a step size adjustment parameter with a larger adjustment step size from the TPC command field parameters indicated by the corresponding DCI trigger instruction to perform closed-loop power adjustment.
In the closed-loop power control method of the embodiment of the invention, the TPC command table configured at the network side has diversity, so that the terminal can select the adjusting parameter with larger adjusting step length to adjust the power, and the real-time property and the rapidity of the adjustment of the transmitting power are realized.
Another implementation of the closed-loop power control method according to the embodiment of the present invention is applied to a terminal, and as shown in fig. 4, the method includes:
s410, acquiring a power configuration signaling sent by network side equipment;
wherein the power configuration signaling is derived from a TPC command table comprising at least four TPC command domain parameters; or the power configuration signaling is derived from a TPC command table comprising at least two TPC command field parameters, wherein at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter.
In step S410, in the embodiment of the present invention, the power configuration signaling may be obtained through downlink control information DCI or radio resource control RRC information.
Specifically, in step S410, when the power configuration signaling is derived from a TPC command table including at least four TPC command field parameters, the TPC command table may include at least four TPC command field parameters, for example, the TPC command table includes five TPC command field parameters as shown in the above table. Compared with the prior art that the TPC command table comprises four TPC command domain parameters, the method of the embodiment of the invention increases the TPC command domain parameters in the TPC command table, so that the terminal can adopt the TPC command domain parameters with larger adjustment step length to adjust the closed-loop power, and the method is suitable for the requirement of the terminal on real-time and rapid transmission power adjustment.
In step S410, the power configuration signaling is derived from a TPC command table including at least two TPC command field parameters, where at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter. Alternatively, two, three or more step size adjustment parameters may correspond to one TPC command field parameter. For example, the TPC command table may be formed in a structure as in table 2 above.
Further, when the power configuration signaling is derived from a TPC command table comprising at least two TPC command field parameters, wherein at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter, the method further comprises: and selecting one step length adjusting parameter in the TPC command domain parameters corresponding to the DCI triggering instruction to carry out power adjustment.
Optionally, the terminal may select a step size adjustment parameter with a larger adjustment step size from the TPC command field parameters indicated by the corresponding DCI trigger instruction to perform closed-loop power adjustment, so as to perform transmission power adjustment quickly in real time.
In this embodiment of the present invention, the terminal may select one step size adjustment parameter in the TPC command field parameter corresponding to the DCI trigger instruction according to at least one of the following parameter information to perform power adjustment:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
Optionally, when the terminal determines that the terminal is currently in a preset condition requiring power fast adjustment, selecting a step size adjustment parameter with the largest adjustment step size in one TPC command field parameter in the TPC command table to perform power adjustment.
Specifically, when the terminal judges that at least one of the following conditions is currently satisfied, it is determined that the terminal is currently in the preset condition:
the difference value between the Reference Signal Received Power (RSRP) of the cell where the terminal is located and the RSRP of the adjacent cell is smaller than a first preset numerical value;
the channel quality indicator CQI of the terminal is smaller than a second preset value;
the current height of the terminal is greater than a third preset value;
and the signal to interference plus noise ratio SINR of the terminal is less than a fourth preset value.
For example, when the TPC command table is configured as the structure in table 2 above, and when the first preset value is set to 6dB, the second preset value is 5, the third preset value is 100m, and the fourth preset value is 2dB, the terminal determines that the difference between the RSRP of the cell in which the terminal is located and the RSRP of the neighboring cell is less than 6dB, or the CQI of the terminal is less than 5, or the height of the terminal is greater than 100m, or the SINR of the terminal is less than 2dB, the terminal may select the step size adjustment parameter with the step size of '-5' from the TPC command field parameters { -1, -3, -5} triggered by DCI in the TPC command table in table 2 above to perform closed-loop power control.
Optionally, the method further comprises:
reporting at least one of the following parameter information to the network side equipment:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
By reporting the parameter information to the network side equipment, the network side equipment can select one of the at least two TPC command tables as a selected table according to the parameter information and send the selected table to the terminal, so that the TPC command table acquired by the terminal is suitable for the current network transmission condition.
In the closed-loop power control method of the embodiment of the present invention, a network side device configures at least one transmit power control TPC command table for a terminal, and when the configured TPC command table is one, the TPC command table includes at least four TPC command domain parameters, or the TPC command table includes at least two TPC command domain parameters, where at least one of the TPC command domain parameters corresponds to at least one step size adjustment parameter, so that a value with a larger adjustment step size in the TPC command domain parameters can be configured for the terminal to perform power adjustment; when the number of the configured TPC command tables is at least two, the TPC command table including the TPC command field parameter with the larger adjustment step size in the TPC command table may be configured for the terminal to perform power adjustment. Therefore, by increasing the diversity of the configured TPC command table, the terminal can select the TPC command domain parameter with larger adjustment step size to carry out power adjustment, so as to adapt to the real-time and rapid adjustment requirement of the terminal for transmitting power adjustment.
An embodiment of the present invention further provides a network side device, where as shown in fig. 5, the network side device includes a processor 510 and a transceiver 520, where:
the processor 510 is configured to configure at least one Transmit Power Control (TPC) command table, and when the configured TPC command table is one, the TPC command table includes at least four TPC command field parameters, or when the configured TPC command table is one, the TPC command table includes at least two TPC command field parameters, where at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter;
wherein, each TPC command field parameter corresponds to a DCI trigger instruction.
Optionally, in the network side device, the number of the configured TPC command tables is at least two, and in different TPC command tables, adjustment step lengths corresponding to the included TPC command field parameters are different.
Optionally, in the at least two configured TPC command tables, at least one of the TPC command tables includes at least two TPC command field parameters, where at least one TPC command field parameter corresponds to at least one step size adjustment parameter.
Optionally, the processor 510 is further configured to:
selecting one of the TPC command tables as a selected table among the configured at least two TPC command tables.
Optionally, the transceiver 520 is configured to:
and sending the power configuration signaling comprising the selected table to a terminal through Downlink Control Information (DCI) or Radio Resource Control (RRC) information.
Optionally, the processor 510 is configured to:
selecting one of at least two TPC command tables as the selected table according to parameter information of at least one of:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
In addition, optionally, the processor 510 is configured to, when it is determined that the terminal is currently in a preset condition that power needs to be adjusted quickly, select, as the selected table, the TPC command table with a larger adjustment step corresponding to the included TPC command field parameter from the at least two configured TPC command tables.
Optionally, the processor 510 is configured to determine that the terminal is currently in the preset condition when it is determined that the terminal currently satisfies at least one of the following conditions:
the difference value between the Reference Signal Receiving Power (RSRP) of the cell where the terminal is located and the RSRP of the adjacent cell is smaller than a first preset value;
a Channel Quality Indicator (CQI) of the terminal is less than a second preset value;
the current height of the terminal is greater than a third preset value;
and the Signal to Interference plus Noise Ratio (SINR) of the terminal is less than a fourth preset value.
By adopting the network side equipment of the embodiment of the invention, the TPC command table configured by the network side equipment has diversity, so that the terminal can select the adjusting parameter with larger adjusting step length to adjust the power, and the real-time property and the rapidity of the adjustment of the transmitting power are realized.
An embodiment of the present invention further provides a terminal, as shown in fig. 6, including a processor 610 and a transceiver 620, where:
the processor 610 is configured to obtain a power configuration signaling sent by a network side device;
wherein the power configuration signaling is derived from a TPC command table comprising at least four TPC command domain parameters; or the power configuration signaling is derived from a TPC command table comprising at least two TPC command field parameters, wherein at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter.
Optionally, the processor 610 is further configured to:
when the power configuration signaling is from a TPC command table comprising at least two TPC command domain parameters, wherein at least one TPC command domain parameter corresponds to at least one step size adjustment parameter, one step size adjustment parameter in the TPC command domain parameters corresponding to a downlink control information DCI trigger instruction is selected for power adjustment.
Optionally, the processor 610 is specifically configured to:
selecting one step length adjusting parameter in the TPC command domain parameter corresponding to the DCI triggering instruction to carry out power adjustment according to at least one of the following parameter information:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
Optionally, the transceiver 620 is configured to:
reporting at least one of the following parameter information to the network side equipment:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
Optionally, when the processor 610 determines that the terminal is currently in a preset condition that requires power fast adjustment, it selects a step size adjustment parameter with the largest adjustment step size in one TPC command field parameter in the TPC command table to perform power adjustment.
Specifically, when the processor 610 determines that the terminal currently satisfies at least one of the following conditions, it is determined that the terminal is currently in the preset condition:
the difference value between the Reference Signal Received Power (RSRP) of the cell where the terminal is located and the RSRP of the adjacent cell is smaller than a first preset value;
the channel quality indicator CQI of the terminal is smaller than a second preset value;
the current height of the terminal is greater than a third preset value;
and the signal to interference plus noise ratio SINR of the terminal is less than a fourth preset value.
Optionally, the processor 610 obtains the power configuration signaling through downlink control information DCI or radio resource control RRC information.
In another aspect, a communication device is provided in one embodiment of the present invention, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor; wherein the processor, when executing the program, implements the closed loop power control method as described in any one of the above.
Specifically, the communication device may be a network-side device, such as a base station, as shown in fig. 7, where the network-side device includes a memory 710, a processor 720, and a computer program stored in the memory 710 and executable on the processor 720. As shown in fig. 7, the network side device further includes a transceiver 730 and a bus interface 740.
The processor 720 is configured to read a program in the memory 710;
a transceiver 730 for receiving and transmitting data under the control of the processor.
In addition, bus interface 740 may include any number of interconnected buses and bridges, with various circuits linking together one or more processors, represented by processor 720, and memory, represented by memory. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 730 may be a plurality of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 720 is responsible for managing the bus architecture and general processing, and the memory may store data used by the processor in performing operations.
Specifically, the processor 720 is configured to configure at least one TPC command table, and when the configured TPC command table is one, the TPC command table includes at least four TPC command field parameters, or when the configured TPC command table is one, the TPC command table includes at least two TPC command field parameters, where at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter.
In addition, the transceiver 730 and the processor 720 are further configured to perform specific steps of the corresponding transceiver and processor in the above embodiments corresponding to fig. 2 and fig. 3, which are not described in detail herein.
The communication device may be a terminal, as shown in fig. 8, and includes a memory 820, a processor 810, and a computer program stored in the memory 820 and executable on the processor 810; the processor 810, when executing the program, implements the closed loop power control method described above. In addition, the terminal also includes a transceiver 830.
The processor 810 is configured to obtain a power configuration signaling sent by a network side device;
wherein the power configuration signaling is derived from a TPC command table comprising at least four TPC command domain parameters; or the power configuration signaling is derived from a TPC command table comprising at least two TPC command field parameters, wherein at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter.
In addition, the terminal includes a user interface 840 connected to a bus interface providing an interface. In FIG. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 810, and various circuits, represented by memory 820, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The transceiver 830 may be a number of elements, including a transmitter and receiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor in performing operations.
The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor in performing operations.
In addition, the transceiver and the processor are also used for executing specific steps of the corresponding transceiver and the corresponding processor in the above-mentioned embodiment corresponding to fig. 4, and detailed descriptions thereof are omitted.
In addition, the embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the steps in the closed-loop control method as described in any one of the above.
Specifically, the computer-readable storage medium is applied to a network-side device or a terminal, and when the computer-readable storage medium is applied to the network-side device or the terminal, the execution steps in the corresponding closed-loop control methods are described in detail above, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (14)

1. A closed loop power control method is applied to network side equipment, and is characterized in that the method comprises the following steps:
configuring at least one Transmit Power Control (TPC) command table, wherein at least one TPC command table comprises at least two TPC command domain parameters, and at least one TPC command domain parameter corresponds to at least two step size adjustment parameters;
the method further comprises the following steps:
when the configured TPC command tables are at least two, selecting one of the at least two TPC command tables as a selected table according to at least one of the following parameter information in the configured at least two TPC command tables, and sending a power configuration signaling of the selected table to a terminal:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of a terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
2. The closed loop power control method of claim 1, wherein the number of the configured TPC command tables is at least two, and the adjustment step sizes corresponding to the TPC command field parameters included in the different TPC command tables are different.
3. The closed loop power control method of claim 1, wherein signaling the selected table of power configurations to the terminal comprises:
and sending the power configuration signaling of the selected table to a terminal through Downlink Control Information (DCI) or Radio Resource Control (RRC) information.
4. A closed loop power control method applied to a terminal, the method comprising:
acquiring a power configuration signaling sent by network side equipment;
wherein the power configuration signaling is derived from a TPC command table comprising at least two TPC command field parameters, wherein at least one of the TPC command field parameters corresponds to at least two step size adjustment parameters;
the method further comprises the following steps:
selecting one step length adjusting parameter in the TPC command domain parameter corresponding to the DCI triggering instruction to carry out power adjustment according to at least one of the following parameter information:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
a signal to interference plus noise ratio, SINR, of the terminal.
5. Closed loop power control method according to claim 4, characterized in that the method further comprises:
reporting at least one of the following parameter information to the network side equipment:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
a signal to interference plus noise ratio, SINR, of the terminal.
6. The closed loop power control method of claim 4, wherein the power configuration signaling is obtained through Downlink Control Information (DCI) or Radio Resource Control (RRC) information.
7. A network-side device, comprising a processor and a transceiver, wherein:
the processor is configured to configure at least one Transmit Power Control (TPC) command table, and at least one TPC command table includes at least two TPC command field parameters, wherein at least one TPC command field parameter corresponds to at least two step size adjustment parameters; and
when the configured TPC command tables are at least two, selecting one of the at least two TPC command tables as a selected table according to at least one parameter information of the following tables in the configured at least two TPC command tables, and sending a power configuration signaling of the selected table to a terminal:
difference between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of a terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
8. The network-side device of claim 7, wherein the number of the configured TPC command tables is at least two, and adjustment step sizes corresponding to TPC command field parameters included in different TPC command tables are different.
9. The network-side device of claim 7, wherein the transceiver is configured to:
and sending the power configuration signaling of the selected table to a terminal through Downlink Control Information (DCI) or Radio Resource Control (RRC) information.
10. A terminal, comprising a processor and a transceiver, wherein:
the processor is used for acquiring a power configuration signaling sent by the network side equipment;
wherein the power configuration signaling is derived from a TPC command table comprising at least two TPC command field parameters, wherein at least one of the TPC command field parameters corresponds to at least two step size adjustment parameters; and
selecting one step length adjusting parameter in the TPC command domain parameter corresponding to the DCI triggering instruction to carry out power adjustment according to at least one of the following parameter information:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
the signal to interference plus noise ratio SINR of the terminal.
11. The terminal of claim 10, wherein the transceiver is configured to:
reporting at least one of the following parameter information to the network side equipment:
a difference value between Reference Signal Received Power (RSRP) of a cell where the terminal is located and RSRP of an adjacent cell;
a Channel Quality Indicator (CQI) of the terminal;
the current height of the terminal;
a signal to interference plus noise ratio, SINR, of the terminal.
12. The terminal of claim 10, wherein the processor obtains the power configuration signaling through Downlink Control Information (DCI) or Radio Resource Control (RRC) information.
13. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor; wherein the processor, when executing the program, implements the closed loop power control method of any one of claims 1 to 3 or implements the closed loop power control method of any one of claims 4 to 6.
14. A computer readable storage medium, having stored thereon a computer program, characterized in that the program, when being executed by a processor, is adapted to carry out the steps of the closed loop power control method of any of the claims 1 to 3 or to carry out the steps of the closed loop power control method of any of the claims 4 to 6.
CN201810670617.2A 2018-06-26 2018-06-26 Closed-loop power control method, network side equipment and terminal Active CN110650522B (en)

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