CN110650522A - Closed-loop power control method, network side device and terminal - Google Patents

Abstract

The present invention provides a closed-loop power control method, a network side device and a terminal. The method includes: 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 When there is one table, 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. By increasing the diversity of the configured TPC command table, the method enables the terminal to select an adjustment parameter with a larger adjustment step to adjust the power, so as to quickly adjust the transmit power in real time.

Description

Closed-loop power control method, network side device 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 technique

When the terminal communicates at low altitude, due to factors such as building occlusion, the channel is mainly the non-line-of-sight path, and the terminal interferes with neighboring cells less; as the height of the terminal increases, when communicating at high altitude, the channel takes the line-of-sight path as the Mainly, the uplink signal of the terminal causes serious interference to users in neighboring cells, and a large number of neighboring cells are affected.

In addition, during the rapid lift-off of the terminal in the vertical dimension, the interference intensity to neighboring cells changes rapidly, so it is necessary to quickly adjust the transmission power of the terminal; when the terminal is flying in the middle and low altitudes in the horizontal dimension, the interference intensity changes rapidly due to the influence of the surrounding buildings. , it is also necessary to quickly adjust the terminal transmit power.

At present, the existing control schemes for power control of terminals are as follows:

P _T =min{P _CMAX ,P ₀ +α·PL+10log ₁₀ (M)+△ _TF +f}[dBm]

in,

P _CMAX : Indicates the maximum transmit power of the terminal;

P ₀ : indicates the sum of a common power level of all terminals in the cell and a terminal-specific power level;

α: represents the open-loop path loss compensation part;

PL: indicates the path loss;

M: indicates the number of allocated resource blocks (Resource Block, RB);

△ _TF : Indicates the power offset corresponding to different modulation and coding methods,

f: represents the adjustment amount in the case of Transmit Power Control (TPC) command;

According to the above power control method, the TPC command adjustment parameters in the existing closed-loop power control include {-1, 0, 1, 3}, and the power adjustment can only be reduced by at most 1dB each time. For terminals with strong uplink interference, it is impossible to Real-time fast transmission power adjustment.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a closed-loop power control method, network side device and terminal, which are used to solve the problem that the closed-loop power control of the prior art cannot meet the real-time and rapidity requirements of the terminal to adjust the transmit power.

An embodiment of the present invention provides a closed-loop power control method, which is applied to a network side device, wherein the method includes:

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, wherein at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter.

Optionally, in the closed-loop power control method, there are at least two TPC command tables configured, and in the different TPC command tables, the adjustment step sizes corresponding to the included TPC command field parameters are different .

Optionally, the closed-loop power control method, wherein the method further includes:

Among the configured at least two TPC command tables, one of the TPC command tables is selected as the selected table.

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, wherein the method further includes:

According to the parameter information of at least one of the following, one of the at least two TPC command tables is selected as the selected table:

the difference between the RSRP of the reference signal received power of the cell where the terminal is located and the RSRP of the neighboring cell;

the channel quality indication CQI of the terminal;

the current altitude of the terminal;

The signal-to-interference-plus-noise ratio SINR of the terminal.

Optionally, in the closed-loop power control method, among the configured at least two TPC command tables, at least one of the TPC command tables includes at least two TPC command domain parameters, wherein at least one TPC command domain parameter corresponds to At least one step adjustment parameter.

An embodiment of the present invention further provides another closed-loop power control method, which is applied to a terminal, where the method includes:

Obtain the power configuration signaling sent by the network side device;

Wherein, the power configuration signaling is derived from a TPC command table including at least four TPC command field parameters; or the power configuration signaling is derived from a TPC command table including at least two TPC command field parameters, wherein at least one of the The TPC command field parameter corresponds to at least one step size adjustment parameter.

Optionally, in the closed-loop power control method, when the power configuration signaling is derived from a TPC command table including at least two TPC command field parameters, at least one of the TPC command field parameters corresponds to at least one step size When adjusting the parameters, the method further includes: selecting one of the step length adjustment parameters in the TPC command field parameters corresponding to the downlink control information DCI trigger instruction to perform power adjustment.

Optionally, the closed-loop power control method, wherein, according to at least one of the following parameter information, select one of the step length adjustment parameters in the TPC command field parameters corresponding to the downlink control information DCI trigger instruction to perform power adjustment:

the difference between the RSRP of the reference signal received power of the cell where the terminal is located and the RSRP of the neighboring cell;

the channel quality indication CQI of the terminal;

the current altitude of the terminal;

The signal-to-interference-plus-noise ratio SINR of the terminal.

Optionally, the closed-loop power control method, wherein the method further includes:

Report at least one of the following parameter information to the network side device:

the difference between the RSRP of the reference signal received power of the cell where the terminal is located and the RSRP of the neighboring cell;

the channel quality indication CQI of the terminal;

the current altitude 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.

An embodiment of the present invention further provides a network side device, including 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 When there is one TPC command table, 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, in the network side device, there are at least two configured TPC command tables, and in different TPC command tables, the included TPC command field parameters correspond to different adjustment steps.

Optionally, in the network side device, the processor is further configured to:

Among the configured at least two TPC command tables, one of the TPC command tables is selected as the selected table.

Optionally, in the network side device, the transceiver is used for:

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, in the network side device, the processor is used for:

According to the parameter information of at least one of the following, one of the at least two TPC command tables is selected as the selected table:

the difference between the RSRP of the reference signal received power of the cell where the terminal is located and the RSRP of the neighboring cell;

the channel quality indication CQI of the terminal;

the current altitude of the terminal;

The signal-to-interference-plus-noise ratio SINR of the terminal.

Optionally, in the network side device, among the configured at least two TPC command tables, at least one of the TPC command tables includes at least two TPC command domain parameters, wherein at least one of the TPC command domain parameters corresponds to At least one step adjustment parameter.

An embodiment of the present invention further provides a terminal, including a processor and a transceiver, wherein:

The processor is configured to acquire the power configuration signaling sent by the network side device;

Wherein, the power configuration signaling is derived from a TPC command table including at least four TPC command field parameters; or the power configuration signaling is derived from a TPC command table including at least two TPC command field parameters, wherein at least one of the The TPC command field parameter 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 derived from a TPC command table including 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, select the downlink control information DCI trigger command corresponding to the One of the step length adjustment parameters in the TPC command field parameters performs power adjustment.

Optionally, the terminal, wherein the processor is specifically used for:

According to at least one of the following parameter information, select one of the step length adjustment parameters in the TPC command field parameters corresponding to the downlink control information DCI trigger instruction to perform power adjustment:

the difference between the RSRP of the reference signal received power of the cell where the terminal is located and the RSRP of the neighboring cell;

the channel quality indication CQI of the terminal;

the current altitude of the terminal;

The signal-to-interference-plus-noise ratio SINR of the terminal.

Optionally, the terminal, wherein the transceiver is used for:

Report at least one of the following parameter information to the network side device:

the difference between the RSRP of the reference signal received power of the cell where the terminal is located and the RSRP of the neighboring cell;

the channel quality indication CQI of the terminal;

the current altitude of the terminal;

The signal-to-interference-plus-noise ratio SINR of the terminal.

Optionally, in the terminal, the processor obtains the power configuration signaling through downlink control information DCI or radio resource control RRC information.

An embodiment of the present invention further provides a communication device, including a memory, a processor, and a computer program stored on the memory and running on the processor; wherein, the processor executes any one of the above closed-loop power control method.

Embodiments of the present invention further provide a computer-readable storage medium on which a computer program is stored, wherein when the program is executed by a processor, the steps in the closed-loop power control method described in any one of the above are implemented.

At least one of the above-mentioned technical solutions in the specific embodiment of the present invention has the following beneficial effects:

The embodiment of the present invention provides a closed-loop power control method, in which at least one transmit power control TPC command table is configured, and by increasing the diversity of the configured TPC command tables, it can meet the needs of the terminal to adjust the transmit power quickly and in real time, so that the terminal can choose The adjustment parameter with a larger adjustment step is used for power adjustment, so as to quickly adjust the transmission power in real time.

Description of drawings

FIG. 1 is a schematic structural 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 manner 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 schematic flowchart of a third implementation manner of the closed-loop power control method according to the embodiment of the present invention;

5 is a schematic structural diagram of a network side device according to an embodiment of the present invention;

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 according to an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

The closed-loop power control method, terminal, and network-side device provided by the embodiments of the present invention can be applied to a wireless communication system. The wireless communication system may be a 5G system, an evolved long term evolution (Evolved Long Term Evolution, eLTE) system, or a subsequent evolution communication system. Referring to FIG. 1, it is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention. As shown in FIG. 1 , the wireless communication system may include: a network side device 10 and a terminal UE, for example, the terminal is denoted as UE11. In practical applications, the connection between the above-mentioned various devices may be wireless connection. In order to conveniently and intuitively represent the connection relationship between the various devices, a solid line is used in FIG. 1 for illustration.

It should be noted that the above-mentioned communication system may include multiple UEs, and network side devices may communicate with multiple UEs (transmit signaling or transmit data).

The network-side device 10 provided in the embodiment of the present invention may be a base station, and the base station may be a commonly used base station, an evolved node base station (evolved node base station, eNB), or a network-side device in a 5G system (for example, equipment such as next generation node base station (gNB) or transmission and reception point (transmission and reception point, TRP) or cell.

The terminal provided by the embodiment of the present invention may be a drone, a mobile phone, a tablet computer, a notebook computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, or a Personal Digital Assistant (PDA).

Preferably, the terminal is an unmanned aerial vehicle, and the closed-loop power control method according to the embodiment of the present invention can enable the unmanned aerial vehicle to quickly adjust the transmission power during the rapid lift-off process in the vertical dimension and during the flight in the middle and low altitudes in the horizontal dimension. .

In order to solve the problem that closed-loop power control in the prior art cannot realize real-time and fast adjustment of transmit power, an embodiment of the present invention provides a closed-loop power control method, which configures at least one transmit power control TPC command table, and when the configured TPC command table is When it 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, wherein at least one of the TPC command field parameters corresponds to at least one step size adjustment parameter, Therefore, the diversity of the configured TPC command table is increased to meet the needs of the terminal to adjust the transmit power quickly and in real time.

Specifically, as shown in FIG. 2 , an implementation manner 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: 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 When there 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 (Downlink Control Information, DCI) trigger instruction.

Wherein, 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, five TPC command table may be configured to include The TPC command table of command field parameters is shown in Table 1 below:

Table 1

Compared with the prior art, the TPC command table usually includes four TPC command field parameters. In the above manner, the TPC command field parameter is added to the TPC command table, so that the terminal can use the TPC command field parameter with a larger adjustment step. Perform closed loop power adjustment.

It can be understood that, in this embodiment of the present invention, each TPC command field parameter corresponds to a DCI trigger instruction of downlink control information, that is, one TPC command field parameter can be triggered by one DCI instruction.

Optionally, 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 two TPC command domain parameters, wherein at least one TPC command domain parameter corresponds to at least one TPC command domain parameter. A step size adjustment parameter.

Based on the above setting method, one TPC command field parameter may correspond to two, three or more step size adjustment parameters, when the TPC command field parameters corresponding to two, three or more step size adjustment parameters are corresponding When triggered by the DCI instruction, the terminal can select one of the multiple step size adjustment parameters for closed-loop power control adjustment; optionally, when the terminal is currently in a preset condition that requires rapid power adjustment, the terminal can Among the step size adjustment parameters, a step size adjustment parameter with a larger adjustment step size is selected for closed-loop power control adjustment, so as to realize real-time and rapid transmission power adjustment.

For example, the TPC command table can be formed into the following structure in Table 2. The TPC command table has four TPC command field parameters, {-1, -3, -5}, {0}, {1, 2, 3} and {4 , 5, 6}, each TPC command domain parameter corresponds to a DCI trigger command, and the four TPC command domain parameters correspond to at least one step adjustment parameter, preferably, corresponding to at least two step 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 instruction to perform closed-loop power adjustment.

Table 2

In addition, in step S210, there may be at least two configured TPC command tables, and optionally, in different TPC command tables, the adjustment step sizes corresponding to the included TPC command field parameters are different.

For example, there can be two TPC command tables configured by the network side device, namely {-1,0,1,3} and {-3,0,1,3}, corresponding to the adjustment of TPC command field parameters The steps are different.

In this way, by increasing the number of configured TPC command tables, when the terminal meets the preset conditions for rapid power adjustment, one of the TPC command tables with a larger adjustment step can be selected for closed-loop power adjustment, so as to quickly adjust the power in real time. to adjust the transmit power.

In addition, optionally, among the configured at least two TPC command tables, at least one of the TPC command tables includes at least two TPC command field parameters, wherein at least one TPC command field parameter corresponds to at least one step size adjustment parameter, As shown in table 2.

Based on this setting method, when selecting one of the configured at least two TPC command tables to send to the terminal, the network-side device may choose to include at least two TPC command field parameters, wherein at least one of the TPC command field parameters corresponds to The TPC command table of at least one step size adjustment 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 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 the above step S210, the method further includes:

S220, in the configured at least two TPC command tables, select one of the TPC command tables as the selected table;

S230: Send 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 TPC command tables in at least two TPC command tables is selected as the selected table according to the parameter information of at least one of the following:

the difference between the reference signal received power (Reference Signal Receiving Power, RSRP) of the cell where the terminal is located and the RSRP of the neighboring cell;

a channel quality indicator (Channel Quality Indicator, CQI) of the terminal;

the current altitude of the terminal;

A signal to interference plus noise ratio (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 a preset condition that requires rapid power adjustment, in the configured at least two TPC command tables, select the one corresponding to the parameters of the TPC command field included therein. The TPC command table with a larger adjustment step size is used as the selected table.

Optionally, the method further includes: when it is determined that the terminal currently meets at least one of the following conditions, determining that the terminal is currently in the preset condition:

The difference between the reference signal receiving power (Reference Signal Receiving Power, RSRP) of the cell where the terminal is located and the RSRP of the neighboring cell is less than a first preset value;

A channel quality indicator (Channel Quality Indicator, CQI) of the terminal is less than a second preset value;

The height where the terminal is currently located is greater than a third preset value;

A signal to interference plus noise ratio (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 can report the RSRP of the cell where it is located, the channel quality indicator and the SINR of the terminal to the network side device, so that the network side device can determine that the terminal needs to perform rapid power adjustment according to the above parameter information reported by the terminal. In the configured at least two TPC command tables, select the TPC command table with a larger adjustment step corresponding to the included TPC command field parameters as the selected table, and send the selected table to the terminal, so that the terminal can real-time Quickly make transmit power adjustments.

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 the RSRP of the cell where the terminal is located and the RSRP of the neighboring cell according to the RSRP reported by the terminal When the difference between the two 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 can use RRC signaling or DCI to indicate the parameters in the TPC command field respectively. Select the TPC command whose TPC command field parameter is {-3,0,1,3} from the two closed-loop power control parameter tables of {-1,0,1,3} and {-3,0,1,3} The table is configured to the terminal for 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 at least one step size adjustment parameter; The TPC command field parameter corresponds to the downstream control information DCI trigger instruction. If the selected table can be the structure of Table 2 above, 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 adjustment parameter, preferably, at least two steps long adjustment parameters, so that the terminal can select a step size adjustment parameter with a larger adjustment step size from the TPC command domain parameters indicated by the corresponding DCI trigger instruction to perform closed-loop power adjustment.

In the closed-loop power control method according to the embodiment of the present invention, the TPC command table configured on the network side is diverse, so that the terminal can select an adjustment parameter with a larger adjustment step to adjust the power, so as to realize the real-time and fast transmission power adjustment. sex.

Another implementation manner of the closed-loop power control method according to the embodiment of the present invention is applied to a terminal. As shown in FIG. 4 , the method includes:

S410, obtain the power configuration signaling sent by the network side device;

Wherein, the power configuration signaling is derived from a TPC command table including at least four TPC command field parameters; or the power configuration signaling is derived from a TPC command table including at least two TPC command field parameters, wherein at least one of the The TPC command field parameter corresponds to at least one step size adjustment parameter.

In this embodiment of the present invention, in step S410, 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 The five TPC command field parameters shown in the table above. Compared with the prior art, the TPC command table usually includes four TPC command field parameters. In the method described in the embodiment of the present invention, the TPC command field parameter is added to the TPC command table, so that the terminal can use a TPC with a larger adjustment step. The closed-loop power adjustment is performed on the command domain parameters to meet the needs of the terminal to adjust the transmit power quickly and in real time.

In step S410, the power configuration signaling is derived from a TPC command table including 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, one TPC command field parameter may correspond to two, three or more step size adjustment parameters. By way of example, the TPC command table may be formed as the structure of Table 2 above.

Further, when the power configuration signaling is derived from a TPC command table including 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 includes: selecting One of the step length adjustment parameters in the TPC command field parameters corresponding to the downlink control information DCI trigger instruction performs 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 be able to quickly adjust the transmit power in real time.

In this embodiment of the present invention, the terminal may select one of the step length adjustment parameters in the TPC command domain parameters corresponding to the downlink control information DCI trigger instruction to perform power adjustment according to at least one of the following parameter information:

the difference between the RSRP of the reference signal received power of the cell where the terminal is located and the RSRP of the neighboring cell;

the channel quality indication CQI of the terminal;

the current altitude of the terminal;

The signal-to-interference-plus-noise ratio SINR of the terminal.

Optionally, when the terminal determines that it is currently in a preset condition that requires rapid power adjustment, it selects one of the TPC command field parameters in the TPC command table, and the corresponding step size adjustment parameter with the largest adjustment step size is performed. Power adjustment.

Specifically, when the terminal determines that at least one of the following conditions is currently met, it is determined that it is currently in the preset condition:

The difference between the reference signal received power RSRP of the cell where the terminal is located and the RSRP of the neighboring cell is less than a first preset value;

The channel quality indicator CQI of the terminal is less than the second preset value;

The height where the terminal is currently located is greater than a third preset value;

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, 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, When the terminal judges that the difference between the RSRP of the cell and the RSRP of the adjacent 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 can use the TPC command table in Table 2 above. In the DCI-triggered TPC command field parameter {-1,-3,-5}, the step size adjustment parameter with the step size of '-5' can be selected for closed-loop power control.

Optionally, the method further includes:

Report at least one of the following parameter information to the network side device:

the difference between the RSRP of the reference signal received power of the cell where the terminal is located and the RSRP of the neighboring cell;

the channel quality indication CQI of the terminal;

the current altitude of the terminal;

The signal-to-interference-plus-noise ratio SINR of the terminal.

By reporting the above-mentioned parameter information to the network-side device, the network-side device can select one of the at least two TPC command tables as the selected table and send it to the terminal according to the above-mentioned parameter information, so that the TPC obtained by the terminal can be sent to the terminal. The command table adapts to the current network transmission conditions.

In the closed-loop power control method according to the embodiment of the present invention, the network-side device configures at least one transmit power control TPC command table for the terminal, and when the configured TPC command table is one, the TPC command table includes at least four TPC commands field parameters, or 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, so that the adjustment step size among the TPC command field parameters can be configured for the terminal. A large value is used for power adjustment; when there are at least two configured TPC command tables, a TPC command table with a larger adjustment step corresponding to the included TPC command field parameters in the TPC command table can be configured for the terminal for power adjustment. . Therefore, by increasing the diversity of the configured TPC command table, the terminal can select the TPC command field parameter with a larger adjustment step to perform power adjustment, so as to meet the real-time and fast adjustment requirement of the terminal to adjust the transmit power.

An embodiment of the present invention further provides a network side device, which, as shown in FIG. 5 , includes a processor 510 and a transceiver 520, wherein:

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 When there is one TPC command table, 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;

Wherein, each TPC command field parameter corresponds to the downlink control information DCI trigger instruction.

Optionally, in the network-side device, there are at least two configured TPC command tables, and in different TPC command tables, the included TPC command field parameters correspond to different adjustment steps.

Optionally, in the configured at least two TPC command tables, at least one of the TPC command tables includes at least two TPC command field parameters, wherein at least one TPC command field parameter corresponds to at least one step size adjustment parameter.

Optionally, the processor 510 is further configured to:

Among the configured at least two TPC command tables, one of the TPC command tables is selected as the selected table.

Optionally, the transceiver 520 is used for:

The power configuration signaling including the selected table is sent to the terminal through downlink control information DCI or radio resource control RRC information.

Optionally, the processor 510 is used for:

According to the parameter information of at least one of the following, one of the at least two TPC command tables is selected as the selected table:

the difference between the RSRP of the reference signal received power of the cell where the terminal is located and the RSRP of the neighboring cell;

the channel quality indication CQI of the terminal;

the current altitude of the terminal;

The signal-to-interference-plus-noise ratio SINR of the terminal.

In addition, optionally, the processor 510 is configured to, when judging that the terminal is currently in a preset condition that requires rapid power adjustment, select the TPC command domain parameter phase included in the at least two configured TPC command tables. The corresponding TPC command table with a larger adjustment step size is used as the selected table.

Optionally, the processor 510 is configured to, when judging that the terminal currently meets at least one of the following conditions, determine that the terminal is currently in the preset condition:

The difference between the reference signal receiving power (Reference Signal Receiving Power, RSRP) of the cell where the terminal is located and the RSRP of the neighboring cell is less than a first preset value;

A channel quality indicator (Channel Quality Indicator, CQI) of the terminal is less than a second preset value;

The height where the terminal is currently located is greater than a third preset value;

A signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR) of the terminal is less than a fourth preset value.

With the network-side device according to the embodiment of the present invention, the TPC command table configured by the network-side device has diversity, so that the terminal can select an adjustment parameter with a larger adjustment step to perform power adjustment, so as to realize the real-time and high-speed transmission power adjustment. rapidity.

An embodiment of the present invention further provides a terminal, as shown in FIG. 6 , including a processor 610 and a transceiver 620, wherein:

The processor 610 is configured to obtain the power configuration signaling sent by the network side device;

Wherein, the power configuration signaling is derived from a TPC command table including at least four TPC command field parameters; or the power configuration signaling is derived from a TPC command table including at least two TPC command field parameters, wherein at least one of the The TPC command field parameter corresponds to at least one step size adjustment parameter.

Optionally, the processor 610 is further configured to:

When the power configuration signaling is derived from a TPC command table including 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, select the downlink control information DCI trigger command corresponding to the One of the step length adjustment parameters in the TPC command field parameters performs power adjustment.

Optionally, the processor 610 is specifically configured to:

According to at least one of the following parameter information, select one of the step length adjustment parameters in the TPC command field parameters corresponding to the downlink control information DCI trigger instruction to perform power adjustment:

the difference between the RSRP of the reference signal received power of the cell where the terminal is located and the RSRP of the neighboring cell;

the channel quality indication CQI of the terminal;

the current altitude of the terminal;

The signal-to-interference-plus-noise ratio SINR of the terminal.

Optionally, the transceiver 620 is used to:

Report at least one of the following parameter information to the network side device:

the difference between the RSRP of the reference signal received power of the cell where the terminal is located and the RSRP of the neighboring cell;

the channel quality indication CQI of the terminal;

the current altitude 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 rapid power adjustment, it selects one of the TPC command field parameters in the TPC command table, and the corresponding step size adjustment parameter with the largest adjustment step size is performed. Power adjustment.

Specifically, when the processor 610 determines that the terminal currently meets at least one of the following conditions, it is determined that the terminal is currently in the preset condition:

The difference between the reference signal received power RSRP of the cell where the terminal is located and the RSRP of the neighboring cell is less than a first preset value;

The channel quality indicator CQI of the terminal is less than the second preset value;

The height where the terminal is currently located is greater than a third preset value;

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.

Another aspect of specific embodiments of the present invention further provides a communication device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor executes the program When the closed-loop power control method described in any one of the above is realized.

Specifically, the above-mentioned communication device may be a network-side device, such as a base station. As shown in FIG. 7 , the network-side device includes a memory 710 , a processor 720 , and is stored in the memory 710 and can be used in the processor 720 . computer programs running on it. As shown in FIG. 7 , the network side device further includes a transceiver 730 and a bus interface 740 .

Wherein, the processor 720 is used for reading the program in the memory 710;

A transceiver 730 for receiving and transmitting data under the control of the processor.

Additionally, bus interface 740 may include any number of interconnected buses and bridges, in particular one or more processors, represented by processor 720, and various circuits of memory, represented by memory, linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 730 may be a number of elements, including transmitters and transceivers, that provide a means for communicating with various other devices 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 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.

In addition, the transceiver 730 and the processor 720 are also configured to execute the specific steps corresponding to the transceiver and the processor in the embodiments corresponding to FIG. 2 and FIG. 3 , which are not described in detail here.

The above-mentioned communication device can be a terminal, as shown in FIG. 8 , including a memory 820, a processor 810, and a computer program stored in the memory 820 and running on the processor 810; when the processor 810 executes the program, the above-mentioned closed-loop power is realized. Control Method. In addition, the terminal further includes a transceiver 830 .

The processor 810 is configured to acquire the power configuration signaling sent by the network side device;

Wherein, the power configuration signaling is derived from a TPC command table including at least four TPC command field parameters; or the power configuration signaling is derived from a TPC command table including at least two TPC command field parameters, wherein at least one of the The TPC command field parameter corresponds to at least one step size adjustment parameter.

In addition, the terminal also includes a user interface 840, which is connected to the bus interface that provides the interface. In FIG. 8, the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors, represented by processor 810, and various circuits of memory, represented by memory 820, linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. Transceiver 830 may be multiple elements, including a transmitter and a receiver, providing a means for communicating with various other devices 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 to execute the specific steps corresponding to the transceiver and the processor in the above-mentioned embodiment corresponding to FIG. 4 , which will not be described in detail here.

In addition, a specific embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, wherein when the program is executed by a processor, the steps in the closed-loop control method described in any one of the above are implemented.

Specifically, the computer-readable storage medium is applied to a network-side device or terminal, and when applied to a network-side device or terminal, the execution steps in the corresponding closed-loop control methods are as described in detail above, and will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included individually, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.

The above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute part of the steps of the transceiving method described in the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM for short), Random Access Memory (RAM for short), magnetic disk or CD, etc. that can store program codes medium.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as It is the protection scope of the present invention.

Claims (24)

1. A closed loop power control method is applied to a network side device, and is characterized in that 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.

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 TPC command tables different from each other include different TPC command field parameters corresponding to different adjustment step sizes.

3. Closed loop power control method according to claim 2, characterized in that the method further comprises:

selecting one of the TPC command tables as a selected table among the configured at least two TPC command tables.

4. The closed-loop power control method of claim 3, wherein the power configuration signaling of the selected table is sent to the terminal through Downlink Control Information (DCI) or Radio Resource Control (RRC) information.

5. Closed loop power control method according to claim 3, characterized in that the method further comprises:

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.

6. The closed loop power control method of claim 2, wherein at least one of the at least two configured TPC command tables includes at least two TPC command field parameters, and wherein at least one TPC command field parameter corresponds to at least one step size adjustment parameter.

7. 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 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.

8. The closed loop power control method of claim 7, wherein 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 comprising:

and selecting one step length adjusting parameter in the TPC command domain parameters corresponding to the DCI triggering instruction to carry out power adjustment.

9. The closed-loop power control method of claim 8, wherein one of the step size adjustment parameters in the TPC command field parameters corresponding to the DCI trigger instruction is selected for 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.

10. Closed loop power control method according to claim 7, 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;

the signal to interference plus noise ratio SINR of the terminal.

11. The closed loop power control method of claim 7, wherein the power configuration signaling is obtained through Downlink Control Information (DCI) or Radio Resource Control (RRC) information.

12. 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 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.

13. The network-side device of claim 12, 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.

14. The network-side device of claim 13, 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.

15. The network-side device of claim 14, 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.

16. The network-side device of claim 14, 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.

17. The network-side device of claim 13, wherein at least one of the at least two configured TPC command tables includes at least two TPC command field parameters, and wherein at least one TPC command field parameter corresponds to at least one step size adjustment parameter.

18. 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 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.

19. The terminal of claim 18, 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.

20. The terminal of claim 19, wherein the processor is further 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.

21. The terminal of claim 18, 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.

22. The terminal of claim 18, wherein the processor obtains the power configuration signaling through Downlink Control Information (DCI) or Radio Resource Control (RRC) information.

23. 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 6 or implements the closed loop power control method of any one of claims 7 to 11.

24. 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 according to any of the claims 1 to 6 or the steps of the closed loop power control method according to any of the claims 7 to 11.

Images