CN117858208A - Power control method, apparatus and storage medium - Google Patents
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Abstract
The application provides a power control method, equipment and a storage medium. The power control method applied to the first communication node comprises the following steps: receiving a power adjustment signaling carrying a power adjustment amount corresponding to a target activation carrier configured by a second communication node; and adjusting the transmission power of the corresponding target activated carrier according to the power adjustment signaling.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a power control method, apparatus, and storage medium.
Background
In the New Radio (NR) communication, the change of the power generation behavior of the terminal will cause the change of the optimal target receiving power at the base station side, and the uplink power control needs to regulate and control these changes in time to ensure the transmission performance. However, the defects of dependence on actual service scheduling, incapability of uniformly adjusting multi-carrier synchronization and the like existing in the current power control architecture can lead to long time required by power control adjustment, a large amount of uplink service transmission time is occupied for power adjustment, which can necessarily influence service scheduling performance, and even serious problems of incapability of keeping up with power change speed of power control convergence speed can occur.
Disclosure of Invention
In view of this, the embodiments of the present application provide a power control method, apparatus, and storage medium, which achieve the effect of simultaneously performing power adjustment on multiple active carriers.
The embodiment of the application provides a power control method, which is applied to a first communication node and comprises the following steps:
receiving a power adjustment signaling carrying a power adjustment amount corresponding to a target activation carrier configured by a second communication node;
and adjusting the transmission power of the corresponding target activated carrier according to the power adjustment signaling.
The embodiment of the application provides a power control method applied to a second communication node, comprising the following steps:
pre-configuring a power adjustment signaling carrying a power adjustment amount corresponding to a target activated carrier;
and sending the power adjustment signaling to a first communication node so that the first communication node adjusts the transmission power of the target activated carrier corresponding to the power adjustment signaling.
The embodiment of the application provides a communication device, which comprises: a memory, and one or more processors;
the memory is configured to store one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the methods of any of the embodiments described above.
The present application provides a storage medium storing a computer program which, when executed by a processor, implements the method described in any of the above embodiments.
Drawings
Fig. 1 is a schematic diagram of an influence of single RB power on a transmission traffic provided in an embodiment of the present application;
fig. 2 is a schematic diagram of power preemption of a primary carrier according to an embodiment of the present application;
fig. 3 is a schematic diagram of power preemption of an auxiliary carrier according to an embodiment of the present application;
fig. 4 is a flowchart of a power control method provided in an embodiment of the present application;
fig. 5 is a schematic configuration diagram of a MAC CE format provided in an embodiment of the present application;
fig. 6 is a schematic configuration diagram of another MAC CE format provided in an embodiment of the present application;
fig. 7 is a schematic diagram of a configuration of TPC command field mapping values according to an embodiment of the present application;
FIG. 8 is a flow chart of another power control method provided by an embodiment of the present application;
fig. 9 is an interactive schematic diagram for adjusting transmission power of multiple carriers according to an embodiment of the present application;
fig. 10 is another interactive schematic diagram for adjusting transmission power of multiple carriers according to an embodiment of the present application;
fig. 11 is a schematic diagram of still another interaction for adjusting transmission power of multiple carriers according to an embodiment of the present application;
FIG. 12 is a schematic diagram of an optimal received power for small traffic provided by an embodiment of the present application;
fig. 13 is an interactive schematic diagram of still another adjustment of transmission power of multiple carriers according to an embodiment of the present application;
fig. 14 is a block diagram of a power control apparatus according to an embodiment of the present application;
fig. 15 is a block diagram of another power control apparatus according to an embodiment of the present application;
fig. 16 is a schematic structural diagram of a communication device according to an embodiment of the present application.
Detailed Description
Embodiments of the present application will be described below with reference to the accompanying drawings. The present application is described below with reference to the drawings of embodiments, which are presented for the purpose of illustrating the present application and are not intended to limit the scope of the present application.
The 3GPP protocol specifies that the network side can configure an initial target received power p0 on a single Radio Bearer (RB) through a higher layer parameter, the uplink power of the terminal needs to meet the configuration requirement of the network side as much as possible, and the subsequent network side can issue a transmit power command (Transmit Power Command, TPC) command word through downlink control information (Downlink Control Information, DCI) to adjust the target received power on the single RB (note 1). However, the TPC command word in the current protocol has only 2 bits, and has the defects of small power adjustment step size and long adjustment time (absolute power control and cumulative power control are two power control modes defined by the protocol):
absolute power control: the power adjustment amounts corresponding to the 2-bit TPC command words are [ -4, -1, 4] dB respectively, and the adjustment amounts issued by DCI each time are mutually independent. Therefore, [ -4, -1, 4] is the power adjustment range under the power control method, so that the absolute power control has small adjustment selection quantity and small range.
Cumulative power control: the power adjustment amounts corresponding to the 2-bit TPC command words are [ -1,0,1,3] dB respectively, and the adjustment amounts issued by the DCIs need to be accumulated to obtain the final adjustment amount, so that the power adjustment range under the method is not limited. However, the granularity of power adjustment supported by each DCI down is small (especially, only 1dB is supported by each power down), which may result in a larger number of power control adjustments and longer time to achieve the desired effect.
In the age of long term evolution (Long Term Evolution, LTE) where uplink carrier aggregation (Carrier Aggregation, CA) is not widely used, the uplink maximum transmit power of the terminal is relatively stable, and a large-scale power adjustment action does not occur frequently, so that the problem of low power control adjustment speed is not obvious. And the uplink power control under a single carrier is mainly used for controlling the terminal to generate power so as to reduce the interference to the adjacent cells, and the step length and the speed of the power control are not required to be high.
The importance of uplink CA is becoming more and more apparent in the 5G NR large bandwidth age. In the uplink multi-carrier scenario, whether the number of active carriers changes or the number of actually scheduled carriers changes, the available transmit power of the terminal on each active carrier changes. Moreover, the problem of power robbing among carriers exists in the multi-carrier, which results in that an uplink power control means must be adopted to obtain better traffic transmission performance on each carrier (see note 2 for reasons). In addition, the introduction of millimeter wave (mmWave) in the NR FR2 (Frequency Range 2) band has led to the widespread use of analog beamforming techniques, which have led to more variable modesty of the power behavior of the terminal. At present, the 3GPP protocol gives the FR2 terminal higher power-generating degree of freedom, and many factors such as modulation order, transmission waveform, RB resource allocation position, terminal analog beam change and the like can cause the change of the power-generating behavior of the terminal.
The change of the power-generating behavior of the terminal can cause the change of the optimal target receiving power at the base station side, and the uplink power control needs to regulate and control the changes in time so as to ensure the transmission performance. However, the defects of small adjustment step length, dependence on actual service scheduling, incapability of synchronous and unified adjustment of multiple carriers and the like in the current power control architecture can lead to long time required by power control adjustment, a large amount of uplink service transmission time is occupied for power adjustment, which can necessarily influence service scheduling performance, and serious problems that the convergence speed of power control cannot follow the change speed of power generation even occur. The fast power control aims to effectively shorten the power adjustment process after the target received power is changed, and reduce the scheduling performance influence caused by frequent power adjustment under the background of variable power generation of the terminal.
Note 1: simplified version of NR protocol terminal power generation calculation formula
Wherein PCMAX is the maximum transmitting power of the terminal; p0 is the initial target received power configuration; MRB is the actual scheduling RB number; alpha is a path loss compensation factor; PL is road loss; Δtf is an adjustment amount related to an uplink transport Format, and TF refers to a transport Format (transmission Format), i.e. a modulation and coding strategy (Modulation and Coding Scheme, MCS); f is the power control adjustment, i.e. the power adjustment achieved by the base station via TPC command words.
And (2) injection: reasons for optimizing transmission flow performance through power control in CA scene
Fig. 1 is a schematic diagram of an influence of single RB power on a transmission traffic according to an embodiment of the present application. In the single carrier scenario, in the case that the maximum transmission power of the terminal is fixed, if the limitation of the number of scheduled RBs is not considered, the relationship between the transmission power of the terminal on a single RB and the total traffic is shown in fig. 1.
As shown in fig. 1, there is one single RB of optimal received power so that the overall transmission flow is optimal. The larger the receiving power of a single RB, the higher the MCS level (higher code rate and modulation order) selected by the base station side can be, but because the total power of the terminal is limited, the number of RBs finally used for transmitting data will be reduced, and the transmission flow will not necessarily be more.
The single RB receiving power value with the optimal flow is related to the channel environment where the terminal is located and the maximum transmitting power, and the change of the UE power behavior will necessarily change the optimal receiving power.
In the single carrier scenario, the single RB received power is adjusted to optimize the transmission traffic without using a power control means. The base station can configure target receiving power on a single RB through p0, and the terminal can strictly perform power generation according to the target when the total transmitting power of the terminal is not limited. However, when the number of actual scheduled RBs is too large and the power generated according to the p0 configuration exceeds the total power, the terminal automatically reduces the power generated on each scheduled RB to ensure that the total power does not exceed the limit, and the actual received power at the base station side is lower than the target received power. Therefore, in a single carrier scenario, the base station can configure a p0 (guaranteed to be capable of selecting the highest MCS level) large enough, and then regulate and control the power action of the terminal by changing the number of scheduling RBs to optimize the transmission flow.
In a multi-carrier scenario, the situation changes. Fig. 2 is a schematic diagram of power preemption of a primary carrier according to an embodiment of the present application. Fig. 3 is a schematic diagram of power preemption of an auxiliary carrier according to an embodiment of the present application. At present, 3GPP protocol provides that the main carrier has higher power distribution priority than the auxiliary carrier, when the main carrier and the auxiliary carrier are scheduled at the same time, the terminal can preferentially meet the target receiving power requirement on the main carrier, and the residual power can be supplied to the auxiliary carrier for use. Under such a limitation, the terminal does not actively reduce the transmit power on each RB until the primary carrier runs out of all transmit power, as shown in fig. 2. Therefore, for the main carrier, the power action of the terminal cannot be effectively regulated and controlled by changing the number of the scheduled RBs like a single carrier, so that the expected received power needs to be forcedly changed by means of power control to perform flow performance regulation. When there are a plurality of secondary carriers, there is a problem of power robbing between the secondary carriers (as shown in fig. 3), and it is also necessary to rely on power control for transmission flow rate adjustment.
In view of this, the embodiments of the present application provide a power control method, which achieves the effect of adjusting power for a plurality of active carriers at the same time.
In an embodiment, fig. 4 is a flowchart of a power control method according to an embodiment of the present application. The present embodiment is applied to the case where power adjustment is performed on a plurality of active carriers at the same time. The present embodiment may be performed by a first communication node. The first communication node may be a terminal, for example. As shown in fig. 4, the present embodiment includes: S410-S420.
S410, receiving a power adjustment signaling carrying a power adjustment amount corresponding to the target activated carrier configured by the second communication node.
In an embodiment, the target activation carrier refers to a carrier that needs to be activated and data is transmitted. In an embodiment, the second communication node configures a power adjustment amount corresponding to the carrier wave carrying the target activation in the power adjustment signaling, and sends the power adjustment signaling to the first communication node.
S420, adjusting the transmission power of the target activated carrier corresponding to the power adjustment signaling.
In an embodiment, after the first communication node receives the power adjustment amount of each target activated carrier, the current transmission power of the corresponding target activated carrier is adjusted according to the power adjustment amount in the power adjustment signaling, so that the first communication node performs uplink transmission according to the adjusted transmission power. And the power adjustment amount corresponding to one or more target activated carriers can be carried directly through one power adjustment signaling, so that the power adjustment can be carried out on a plurality of target activated carriers at one time, and the effect that the power adjustment can be carried out on a plurality of target activated carriers at the same time is achieved.
In one embodiment, the power adjustment signaling includes at least one of: -medium access control layer control unit (MAC Control Element, MAC CE) signalling; DCI signaling.
In an embodiment, the format of the MAC CE signaling includes at least the following fields: a transmit power command TPC command word indication field; a TPC command field; the TPC command field is used to indicate a power adjustment amount of the uplink data channel; the TPC command word indication field is used for indicating the carrying condition of the TPC command word corresponding to each uplink carrier. In the embodiment, the format of the MAC CE signaling may be a newly added MAC CE format, or may be a format modified on the basis of the existing MAC CE format, so as to achieve the power control effect.
In an embodiment, the actual number of TPC command fields carried by the MAC CE signaling is equal to the number of fields configured as the first preset value in the TPC command word indication field. Wherein the first preset value may be 1. In an embodiment, the actual number of TPC command fields carried by the MAC CE signaling is consistent with the number of fields configured as 1 in the TPC command word indication field.
In an embodiment, when the number of uplink carriers is smaller than a second preset value, the TPC command word indication field in the MAC CE signaling occupies one byte; wherein, the number of uplink carriers is greater than the number of target activated carriers. Wherein the second preset value may be 8. In an embodiment, in the case that the number of uplink carriers is less than 8, a MAC CE format in which the TPC command word indication field occupies one byte may be adopted.
In an embodiment, when the number of uplink carriers is greater than or equal to a second preset value, the TPC command word indication field in the MAC CE signaling occupies four bytes; wherein, the number of uplink carriers is greater than the number of target activated carriers. Wherein the second preset value may be 8. In an embodiment, when the number of uplink carriers is greater than or equal to 8, a MAC CE format may be adopted in which the TPC command word indication field occupies four bytes. In an embodiment, the format of the DCI signaling at least includes: a block identification field and a TPC command field; wherein the number of block identification fields is the same as the number of uplink carriers. In an embodiment, the format of the DCI signaling may be a newly added DCI format; or a new power control field is added in the existing DCI format; it is also possible to add more bits in the existing DCI field; the mapping meaning of partial fields in the existing DCI format can be changed to achieve the power control effect. In an embodiment, the format of the DCI signaling includes: block number 1, block number 2, …, block number N; n is the number of uplink configuration carriers of the terminal, and each block only contains one field. The format of the DCI signaling also comprises: TPC command and occupies 4 bits.
In an embodiment, the advantage of using DCI is that signaling takes effect quickly; the disadvantage is that the protocol changes have large spreading area (the newly added DCI format relates to a series of changes such as DCI length alignment, terminal blind detection identification and the like), and the signaling is effective without a handshake mechanism.
In an embodiment, the TPC command field may occupy a number of bits of 4 bits. In an embodiment, each TPC command field may occupy one bit, or may occupy multiple bits, and may be configured according to actual usage requirements, which is not limited thereto.
In an embodiment, a difference between TPC values corresponding to indexes of every two adjacent TPC command fields is greater than or equal to a third predetermined value. The third preset value may be, for example, 3dB. It can be understood that the TPC values corresponding to the indexes of the adjacent two TPC command fields differ by 3dB, so that the transmission power can be adjusted in a large step size.
In an embodiment, taking the second preset value as 8 as an example, the configuration of the MAC CE format will be described. Fig. 5 is a schematic configuration diagram of a MAC CE format according to an embodiment of the present application. Fig. 6 is a schematic configuration diagram of another MAC CE format provided in an embodiment of the present application. Fig. 7 is a schematic diagram of configuration of a TPC command field mapping value according to an embodiment of the present application. As shown in fig. 5 and 6, the MAC CE format carries C i R and TPC Command.
Wherein C is i : the field is used for indicating whether a TPC Command word for the carrier i appears in the MAC CE, and the field set to 0 represents that the TPC Command of the carrier i cannot be carried in the MAC CE; setting 1 to represent a TPC Command in the MAC CE that would carry carrier i;
r: reserved bits, fixed set to 0;
TPC Command: the field is used for indicating the power control adjustment amount of the uplink data channel, and the numerical value of the specific mapping of the 4-bit field is shown in fig. 7;
m: the actual number of TPC commands carried by the current MAC CE, and C set to 1 i Number of fieldsThe consistency needs to be maintained. TPC commands 1 to m are in one-to-one correspondence with Ci fields set to 1 in order of numbers from small to large.
As shown in fig. 5, the MAC CE signaling can carry 7 TPC command word indication fields (i.e., C 1 ，C 2 ，C 3 ，C 4 ，C 5 ，C 6 ，C 7 ) And occupies one byte by the TPC command word indication field and one reserved bit; also, each TPC Command field occupies 4 bits (i.e., TPC Command 1, TPC Command 2, TPC Command 3 … … TPC Command m occupies 4 bits).
As shown in fig. 6, 31 TPC command word indication fields (i.e., C 1 ，C 2 ，C 3 ，C 4 ，C 5 ，C 6 ，C 7 ……C 31 ) And occupies four bytes by the TPC command word indication field and one reserved bit; also, each TPC Command field occupies 4 bits (i.e., TPC Command 1, TPC Command 2, TPC Command 3 … … TPC Command m occupies 4 bits).
As shown in fig. 7, in the case where each TPC command field occupies 4 bits, the index of the TPC command field may be 0,1, 2, 3 … …, and the TPC values corresponding to the indexes of the adjacent two TPC command fields are each different by 3dB.
In the embodiment, the advantage of using the MAC CE signaling is that the protocol change has small scope, the signaling is effective and stable and reliable (the base station terminal has a handshake mechanism, and the terminal can inform the base station whether the MAC CE is successfully decoded); the disadvantage is the slow time of the signaling validation (at least 3ms of time is required by the terminal from the reception of the MAC CE to validation of the content therein, as specified by the current protocol).
In one embodiment, fig. 8 is a flowchart of another power control method according to an embodiment of the present application. The present embodiment is applied to the case where power adjustment is performed on a plurality of active carriers at the same time. The present embodiment may be performed by a second communication node. As shown in fig. 8, the present embodiment includes: S810-S820.
S810, pre-configuring a power adjustment signaling carrying a power adjustment amount corresponding to the target activated carrier.
And S820, transmitting the power adjustment signaling to the first communication node so that the first communication node adjusts the transmission power of the target activated carrier corresponding to the power adjustment signaling.
In one embodiment, the power adjustment signaling includes at least one of: the media access control layer control unit MAC CE signaling; downlink control information, DCI, signaling.
In an embodiment, the format of the MAC CE signaling includes at least the following fields: a transmit power command TPC command word indication field; a TPC command field; the TPC command field is used to indicate a power adjustment amount of the uplink data channel; the TPC command word indication field is used for indicating the carrying condition of the TPC command word corresponding to each uplink carrier.
In an embodiment, the actual number of TPC command fields carried by the MAC CE signaling is equal to the number of fields configured as the first preset value in the TPC command word indication field.
In an embodiment, when the number of uplink carriers is smaller than a second preset value, the TPC command word indication field in the MAC CE signaling occupies one byte; wherein, the number of uplink carriers is greater than the number of target activated carriers.
In an embodiment, when the number of uplink carriers is greater than or equal to a second preset value, the TPC command word indication field in the MAC CE signaling occupies four bytes; wherein, the number of uplink carriers is greater than the number of target activated carriers.
In an embodiment, the format of the DCI signaling at least includes: a block identification field and a TPC command field; wherein the number of block identification fields is the same as the number of uplink carriers.
In one embodiment, the TPC command field occupies a number of bits of 4 bits.
In an embodiment, a difference between TPC values corresponding to indexes of every two adjacent TPC command fields is greater than or equal to a third predetermined value.
It should be noted that, explanation of parameters such as the power adjustment signaling and the power adjustment amount in the power control method applied to the second communication node is described in the above embodiment of the power control method applied to the first communication node, and will not be repeated here.
In an embodiment, fig. 9 is an interactive schematic diagram of adjusting transmission power of a carrier according to an embodiment of the present application. In the embodiment, taking the first communication node as a terminal and the second communication node as a base station as an example, the adjustment process of the transmission power of a plurality of carriers is described in the carrier activation and deactivation process. As shown in fig. 9, the adjustment process of the multicarrier transmission power includes the steps of:
s910, the decision activates or deactivates the secondary carrier.
In an embodiment, the base station makes a decision to activate/deactivate the secondary carrier for the terminal according to the actual use requirement.
S920, calculating the power adjustment amount of each target activated carrier.
In an embodiment, the active carrier is changed, the maximum available power probability of the target active carrier is also changed, the optimal receiving power of each target active carrier is calculated according to the changed maximum available power, and then the receiving power adjustment amount of each target active carrier is calculated according to the current receiving power.
S930, issuing a secondary carrier activation/deactivation MAC CE.
S940, the terminal feeds back the successfully decoded MAC CE.
S950, the terminal completes the activation/deactivation of the auxiliary carrier.
S960, transmitting power adjustment signaling.
In an embodiment, the power adjustment signaling may be DCI signaling or MAC CE signaling.
S970, feeding back the decoding success message.
In an embodiment, if the MAC CE is issued, the terminal needs to wait for feedback of the decoding success message; if DCI is issued, this step is ignored.
And S980, carrying out power adjustment on each target activated carrier according to the power adjustment quantity.
S990, the terminal performs uplink transmission with the adjusted transmission power.
In an embodiment, fig. 10 is another interactive schematic diagram for adjusting transmission power of a carrier according to an embodiment of the present application. In the embodiment, taking the first communication node as a terminal and the second communication node as a base station as an example, in the case of abrupt change of the transmission power of the terminal, the adjustment process of the transmission power of one or more carriers is described. As shown in fig. 10, the adjustment process of the multicarrier transmission power includes the steps of:
s1010, terminal power action change.
In an embodiment, the terminal adjusts the power behavior itself for some reason (e.g., abrupt channel environment, analog beam changes, etc.).
S1020, reporting a PHR.
In an embodiment, the terminal reports a power headroom report (Power Headroom Report, PHR).
S1030, the base station re-determines the maximum transmission capacity and the path loss of the terminal according to the PHR.
S1040, calculating the power adjustment amount of each target activated carrier.
In an embodiment, the optimal received power of each active carrier is calculated according to the new transmit power, and then the received power adjustment amount of each active carrier is calculated according to the current received power.
S1050, transmitting power adjustment signaling.
In an embodiment, the power adjustment signaling may be DCI signaling or MAC CE signaling.
S1060, feeding back the decoding success message.
In an embodiment, if the MAC CE is issued, the terminal needs to wait for feedback of the decoding success message; if DCI is issued, this step is ignored.
S1070, performing power adjustment on each target active carrier according to the power adjustment amount.
S1080, the terminal performs uplink transmission with the adjusted transmission power.
In an embodiment, fig. 11 is a schematic diagram of still another interaction for adjusting transmission power of a carrier according to an embodiment of the present application. In the embodiment, taking the first communication node as a terminal and the second communication node as a base station as an example, the adjustment process of the transmission power of one or more carriers is described in the case of sudden drop or sudden rise of the traffic volume of the terminal.
This example describes how the multicarrier transmission power adjustment is performed in case of terminal traffic dips/rises. Fig. 12 is a schematic diagram of an optimal received power under a small traffic volume according to an embodiment of the present application. As shown in fig. 12, in the case where the uplink traffic of the terminal is small, the optimal receiving power of a single RB does not pursue the maximum data transmission capability of the system, but rather the resource utilization efficiency is more seen: and the limited data can be transmitted by fewer RB resources by increasing the receiving power of a single RB, so that the RB resources are saved.
As shown in fig. 11, the adjustment process of the multicarrier transmission power includes the steps of:
s1110, terminal traffic suddenly changes.
In an embodiment, the terminal traffic may be suddenly changed or suddenly increased.
S1120, identifying traffic volume changes and calculating power adjustment amounts.
In an embodiment, the base station identifies the traffic change of the terminal, calculates the optimal received power according to the latest traffic rule, and then calculates the received power adjustment amount of each active carrier according to the current received power.
S1130, issuing power adjustment signaling.
In an embodiment, the power adjustment signaling may be DCI signaling or MAC CE signaling.
S1140, feeding back the decoding success message.
In an embodiment, if the MAC CE is issued, the terminal needs to wait for feedback of the decoding success message; if DCI is issued, ignoring the step;
s1150, power adjustment is carried out on each target activated carrier according to the power adjustment quantity.
S1160, the terminal performs uplink transmission with the adjusted transmission power.
In an embodiment, fig. 13 is an interactive schematic diagram of still another adjustment of transmission power of a carrier according to an embodiment of the present application. In the embodiment, taking the first communication node as a terminal and the second communication node as a base station as an example, the adjustment process of the transmission power of one or more carriers according to the actual service scheduling situation is described. As shown in fig. 13, the adjustment process of the multicarrier transmission power includes the steps of:
s1310, determining the power adjustment amount according to the real-time traffic.
In the embodiment, before each uplink scheduling, the base station calculates the optimal received power according to the current actual traffic volume, and then calculates the received power adjustment quantity of each activated carrier according to the current received power;
s1320, transmitting power adjustment signaling and uplink scheduling grant.
In an embodiment, power adjustment signaling (DCI) is issued and uplink scheduling grants are issued. The embodiment has higher requirement on real-time performance, and can meet the requirement on real-time performance only by using DCI.
And S1330, carrying out power adjustment on each target activated carrier according to the power adjustment quantity.
S1340, the terminal performs uplink transmission with the adjusted transmission power.
In an embodiment, fig. 14 is a block diagram of a power control device according to an embodiment of the present application. The present embodiment is applied to a first communication node. As shown in fig. 14, the power control apparatus in the present embodiment includes: a receiver 1410, and an adjustment module 1420.
The receiver 1410 is configured to receive a power adjustment signaling configured by the second communication node and carrying a power adjustment amount corresponding to the target active carrier.
The adjustment module 1420 is configured to adjust the transmission power of the target active carrier according to the power adjustment signaling.
In one embodiment, the power adjustment signaling includes at least one of: the media access control layer control unit MAC CE signaling; downlink control information, DCI, signaling.
In an embodiment, the format of the MAC CE signaling includes at least the following fields: a transmit power command TPC command word indication field; a TPC command field; the TPC command field is used to indicate a power adjustment amount of the uplink data channel; the TPC command word indication field is used for indicating the carrying condition of the TPC command word corresponding to each uplink carrier.
In an embodiment, the actual number of TPC command fields carried by the MAC CE signaling is equal to the number of fields configured as the first preset value in the TPC command word indication field.
In an embodiment, when the number of uplink carriers is smaller than a second preset value, the TPC command word indication field in the MAC CE signaling occupies one byte; wherein, the number of uplink carriers is greater than the number of target activated carriers.
In an embodiment, when the number of uplink carriers is greater than or equal to a second preset value, the TPC command word indication field in the MAC CE signaling occupies four bytes; wherein, the number of uplink carriers is greater than the number of target activated carriers.
In an embodiment, the format of the DCI signaling at least includes: a block identification field and a TPC command field; wherein the number of block identification fields is the same as the number of uplink carriers.
In one embodiment, the TPC command field occupies a number of bits of 4 bits.
In an embodiment, a difference between TPC values corresponding to indexes of every two adjacent TPC command fields is greater than or equal to a third predetermined value.
The power control device provided in this embodiment is configured to implement the power control method applied to the first communication node in the embodiment shown in fig. 4, and the implementation principle and the technical effect of the power control device provided in this embodiment are similar, and are not repeated here.
In one embodiment, fig. 15 is a block diagram of another power control device according to an embodiment of the present application. The embodiment is applied to the second communication node. As shown in fig. 15, the power control apparatus in the present embodiment includes: a processor 1510 and a transmitter 1520.
The processor 1510 is configured to pre-configure power adjustment signaling carrying a power adjustment amount corresponding to the target active carrier.
A transmitter 1520 configured to transmit the power adjustment signaling to the first communication node, so that the first communication node adjusts the transmission power of the target activation carrier corresponding to the power adjustment signaling.
In one embodiment, the power adjustment signaling includes at least one of: the media access control layer control unit MAC CE signaling; downlink control information, DCI, signaling.
In an embodiment, the format of the MAC CE signaling includes at least the following fields: a transmit power command TPC command word indication field; a TPC command field; the TPC command field is used to indicate a power adjustment amount of the uplink data channel; the TPC command word indication field is used for indicating the carrying condition of the TPC command word corresponding to each uplink carrier.
In an embodiment, the actual number of TPC command fields carried by the MAC CE signaling is equal to the number of fields configured as the first preset value in the TPC command word indication field.
In an embodiment, when the number of uplink carriers is smaller than a second preset value, the TPC command word indication field in the MAC CE signaling occupies one byte; wherein, the number of uplink carriers is greater than the number of target activated carriers.
In an embodiment, when the number of uplink carriers is greater than or equal to a second preset value, the TPC command word indication field in the MAC CE signaling occupies four bytes; wherein, the number of uplink carriers is greater than the number of target activated carriers.
In an embodiment, the format of the DCI signaling at least includes: a block identification field and a TPC command field; wherein the number of block identification fields is the same as the number of uplink carriers.
In one embodiment, the TPC command field occupies a number of bits of 4 bits.
In an embodiment, a difference between TPC values corresponding to indexes of every two adjacent TPC command fields is greater than or equal to a third predetermined value.
The power control device provided in this embodiment is configured to implement the power control method applied to the second communication node in the embodiment shown in fig. 8, and the implementation principle and the technical effect of the power control device provided in this embodiment are similar, and are not repeated here.
In an embodiment, fig. 16 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 16, the apparatus provided in the present application includes: a processor 1610 and a memory 1620. The number of processors 1610 in the device may be one or more, one processor 1610 being illustrated in fig. 16. The amount of memory 1620 in the device may be one or more, with one memory 1620 being illustrated in fig. 16. The processor 1610 and the memory 1620 of the device may be connected by a bus or otherwise, for example in fig. 16. In this embodiment, the device is a first communication node.
The memory 1620 is provided as a computer readable storage medium and may be configured to store a software program, a computer executable program, and modules, such as program instructions/modules corresponding to the apparatus of any of the embodiments of the present application (e.g., the receiver 1410 and the adjustment module 1420 in the power control device). The memory 1620 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the device, etc. In addition, memory 1620 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 1620 may further include memory located remotely from processor 1610, which may be connected to the device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
In the case that the communication device is the first communication node, the above-provided device may be configured to execute the power control method applied to the first communication node provided in any of the above-described embodiments, and have corresponding functions and effects.
In the case that the communication device is the second communication node, the above-provided device may be configured to execute the power control method applied to the second communication node provided in any of the above-described embodiments, and have corresponding functions and effects.
The present embodiments also provide a storage medium containing computer executable instructions, which when executed by a computer processor, are for performing a power control method applied to a first communication node, the method comprising: receiving a power adjustment signaling carrying a power adjustment amount corresponding to a target activation carrier configured by a second communication node; and adjusting the transmission power of the corresponding target activated carrier according to the power adjustment signaling.
The present embodiments also provide a storage medium containing computer executable instructions, which when executed by a computer processor, are for performing a power control method applied to a second communication node, the method comprising: pre-configuring a power adjustment signaling carrying a power adjustment amount corresponding to a target activated carrier; and sending the power adjustment signaling to the first communication node so that the first communication node adjusts the transmission power of the target activated carrier corresponding to the power adjustment signaling.
It will be appreciated by those skilled in the art that the term user equipment encompasses any suitable type of wireless user equipment, such as mobile telephones, portable data processing devices, portable web browsers, or car-mounted mobile stations.
In general, the various embodiments of the application may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.
Embodiments of the present application may be implemented by a data processor of a mobile device executing computer program instructions, e.g. in a processor entity, either in hardware, or in a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (Instruction Set Architecture, ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages.
The block diagrams of any logic flow in the figures of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on a memory. The Memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), optical Memory devices and systems (digital versatile Disk (Digital Video Disc, DVD) or Compact Disk (CD)), and the like. The computer readable medium may include a non-transitory storage medium. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general purpose computers, special purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSPs), application specific integrated circuits (Application Specific Integrated Circuit, ASICs), programmable logic devices (Field-Programmable Gate Array, FGPA), and processors based on a multi-core processor architecture.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (11)
1. A method of power control, applied to a first communication node, comprising:
receiving a power adjustment signaling carrying a power adjustment amount corresponding to a target activation carrier configured by a second communication node;
and adjusting the transmission power of the corresponding target activated carrier according to the power adjustment signaling.
2. The method of claim 1, wherein the power adjustment signaling comprises at least one of: the media access control layer control unit MAC CE signaling; downlink control information, DCI, signaling.
3. The method according to claim 2, wherein the format of the MAC CE signaling comprises at least the following fields: a transmit power command TPC command word indication field; a TPC command field; the TPC command field is configured to indicate a power adjustment amount of an uplink data channel; the TPC command word indication field is configured to indicate a carrying condition of a TPC command word corresponding to each uplink carrier.
4. The method of claim 2 wherein the actual number of TPC command fields carried by the MAC CE signaling is equal to the number of fields configured to a first preset value in the TPC command word indication field.
5. The method of claim 2, wherein the TPC command word indication field in the MAC CE signaling occupies one byte if the number of uplink carriers is less than a second preset value; wherein, the number of the uplink carriers is greater than the number of the target activated carriers.
6. The method of claim 2, wherein the TPC command word indication field in the MAC CE signaling occupies four bytes if the number of uplink carriers is equal to or greater than a second preset value; wherein, the number of the uplink carriers is greater than the number of the target activated carriers.
7. The method according to claim 2, wherein the format of the DCI signaling comprises at least: a block identification field and a TPC command field; wherein, the number of the block identification fields is the same as the number of the uplink carriers.
8. The method of claim 3 or 7, wherein a difference between TPC values corresponding to values of each two adjacent TPC command fields is greater than or equal to a third preset value.
9. A method of power control applied to a second communication node, comprising:
pre-configuring a power adjustment signaling carrying a power adjustment amount corresponding to a target activated carrier;
and sending the power adjustment signaling to a first communication node so that the first communication node adjusts the transmission power of the target activated carrier corresponding to the power adjustment signaling.
10. A communication device, comprising: a memory, and one or more processors;
the memory is configured to store one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of any of claims 1-8 or 9.
11. A storage medium storing a computer program which, when executed by a processor, implements the method of any one of the preceding claims 1-8 or 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211216878.XA CN117858208A (en) | 2022-09-30 | 2022-09-30 | Power control method, apparatus and storage medium |
| PCT/CN2023/119897 WO2024067274A1 (en) | 2022-09-30 | 2023-09-20 | Power control method and device, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211216878.XA CN117858208A (en) | 2022-09-30 | 2022-09-30 | Power control method, apparatus and storage medium |
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| CN117858208A true CN117858208A (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211216878.XA Pending CN117858208A (en) | 2022-09-30 | 2022-09-30 | Power control method, apparatus and storage medium |
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| CN (1) | CN117858208A (en) |
| WO (1) | WO2024067274A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209374B (en) * | 2010-03-30 | 2014-11-05 | 中国移动通信集团公司 | Uplink power control information indication method and device |
| CN103139888A (en) * | 2011-11-28 | 2013-06-05 | 中兴通讯股份有限公司 | Power control information transmission method and system, user equipment (UE) and network side equipment |
| CN103843419B (en) * | 2012-09-28 | 2018-05-29 | 华为技术有限公司 | Power regulating method and system, base station and user equipment |
| CN106998583A (en) * | 2016-01-22 | 2017-08-01 | 中兴通讯股份有限公司 | Poewr control method and device |
| CN112512107A (en) * | 2020-10-16 | 2021-03-16 | 中兴通讯股份有限公司 | Power control method, communication node and computer readable storage medium |
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- 2022-09-30 CN CN202211216878.XA patent/CN117858208A/en active Pending
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