CN110557821A

CN110557821A - Power control method, device, equipment and storage medium

Info

Publication number: CN110557821A
Application number: CN201810565749.9A
Authority: CN
Inventors: 张晓然; 李男; 胡南
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2018-06-04
Filing date: 2018-06-04
Publication date: 2019-12-10
Anticipated expiration: 2038-06-04
Also published as: CN110557821B

Abstract

The embodiment of the invention discloses a power control method, a device, equipment and a storage medium, wherein the method comprises the following steps: a terminal receives first indication information sent by a network side, wherein the first indication information comprises at least two values; and the terminal determines a first compensation parameter and/or a second compensation parameter according to the first indication information, wherein the first compensation parameter is a compensation parameter in a cell selection criterion, and the second compensation parameter is a compensation parameter for selecting a supplementary uplink carrier to initiate random access.

Description

Power control method, device, equipment and storage medium

Technical Field

the present invention relates to New Radio (NR) technology, and in particular, to a power control method and apparatus, a device, and a storage medium.

background

The new frequency spectrum in the fifth Generation (5G, 5 ^th Generation) is mainly based on high frequency and millimeter wave, and the higher frequency band is, the worse the drop resistance is, so the coverage performance is also worse than the low frequency band.

in order to solve the UpLink coverage bottleneck problem, the NR standard introduces a complementary UpLink (SUL) using mode of UpLink and downlink decoupling, that is, an UpLink spectrum of a low frequency band and a spectrum of a high frequency band are paired for use. Fig. 1A is a schematic diagram of a spectrum usage manner with UpLink and DownLink decoupling, wherein 900 megahertz (MHz) UpLink (UL) and 3.5 gigahertz (GHz) UpLink and DownLink (UL and DL) are paired for use.

in a Long Term Evolution (LTE) system, one cell only corresponds to one uplink frequency and one downlink frequency, and a terminal directly initiates random access at the uplink frequency. However, in the NR uplink and downlink decoupling scenario, the same cell corresponds to multiple uplink frequencies (900MHz uplink and 3.5GHz uplink), and it is necessary to select a suitable uplink frequency to initiate random access by determining the quality of a downlink signal. At present, no scheme is given how to perform power control in the NR uplink and downlink decoupling scenario.

disclosure of Invention

in view of the above, embodiments of the present invention provide a power control method and apparatus, a device, and a storage medium to solve at least one problem in the prior art.

the technical scheme of the embodiment of the invention is realized as follows:

The embodiment of the invention provides a power control method, which comprises the following steps:

The terminal receives first indication information sent by a network side, wherein the first indication information comprises at least two values;

And the terminal determines a first compensation parameter and/or a second compensation parameter according to the first indication information, wherein the first compensation parameter is a compensation parameter in a cell selection criterion, and the second compensation parameter is a compensation parameter for selecting a supplementary uplink carrier to initiate random access.

An embodiment of the present invention provides a power control apparatus, including:

a first receiving unit, configured to receive first indication information sent by a network side, where the first indication information includes at least two values;

A first determining unit, configured to determine a first backoff parameter and/or a second backoff parameter according to the first indication information, where the first backoff parameter is a backoff parameter in a cell selection criterion, and the second backoff parameter is a backoff parameter for selecting a supplemental uplink carrier to initiate random access.

The embodiment of the invention provides a power control method, which is characterized by comprising the following steps:

The network side sends first indication information to a terminal, wherein the first indication information comprises at least two values;

the first indication information is further used for limiting uplink transmission power of the terminal on one or more uplink carriers, and the first indication information is further used for determining a first compensation parameter and/or a second compensation parameter, where the first compensation parameter is a compensation parameter in a cell selection criterion, and the second compensation parameter is a compensation parameter for initiating random access by selecting a supplemental uplink carrier.

A third sending unit, configured to send first indication information to a terminal, where the first indication information includes at least two values;

the first indication information is further used for limiting uplink transmission power of the terminal on one or more uplink carriers, and the first indication information is further used for determining a first compensation parameter and/or a second compensation parameter, where the first compensation parameter is a compensation parameter in a cell selection criterion, and the second compensation parameter is a compensation parameter for selecting a supplementary uplink carrier to initiate random access.

The embodiment of the invention provides a power control device, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the power control device is characterized in that the processor executes the program to realize the steps in the power control method at the terminal side; or, the processor implements the steps in the power control method on the network side when executing the program.

an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps in the power control method on a terminal side; or, the processor implements the steps in the power control method on the network side when executing the program.

The embodiment of the invention provides a power control method, a power control device and a power control storage medium, wherein a terminal receives first indication information sent by a network side, and the first indication information comprises at least two values; the terminal determines a first compensation parameter and/or a second compensation parameter according to the first indication information, wherein the first compensation parameter is a compensation parameter in a cell selection criterion, and the second compensation parameter is a compensation parameter for determining to select a supplementary uplink carrier to initiate random access; in this way, power control can be performed in a scenario in which NR uplink and downlink are decoupled.

Drawings

FIG. 1A is a schematic diagram of a spectrum usage pattern with uplink and downlink decoupling;

FIG. 1B is a diagram of the maximum transmit power of PC2 and PC3 terminals at 3.5 GHz;

FIG. 2 is a schematic diagram of a flow chart of implementing a power control method according to an embodiment of the present invention;

FIG. 3A is a schematic diagram of a flow chart of an implementation of a power control method according to an embodiment of the present invention;

FIG. 3B is a diagram illustrating different SUL frequencies corresponding to different RSRP thresholds according to an embodiment of the present invention;

Fig. 3C is a schematic diagram of cell edges corresponding to terminals with different power classes according to an embodiment of the present invention;

fig. 3D is a schematic diagram of different RSRP thresholds corresponding to terminals of different power levels determined by a compensation value according to an embodiment of the present invention;

Fig. 3E is a diagram illustrating different RSRP thresholds corresponding to terminals of different power levels determined by sending multiple thresholds according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of cell edges of different SULs and ULs corresponding to terminals with different power classes according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a flow chart of implementing the power control method according to the embodiment of the present invention;

FIG. 6 is a schematic diagram of a power control apparatus according to an embodiment of the present invention;

fig. 7 is a diagram of a hardware entity of a power control apparatus according to an embodiment of the present invention.

Detailed Description

The NR broadcasts a P-MAX indication in a system message, where the P-MAX is used to limit uplink transmit power of a terminal, that is, the maximum transmit power of a terminal (UE) in a current cell cannot exceed a value indicated in the P-MAX. Currently, only one P-MAX indication is broadcast in a system message for one cell, but for SUL, there are two uplink frequencies, and the allowed P-MAX on the two frequencies may be different, so it is necessary to indicate P-MAX of different frequencies respectively. Current Release 15(Release 15, R15) only supports SUL uplink single-shot, i.e. only transmits on one uplink frequency at the same time, but future releases may support simultaneous transmissions on both uplink frequencies of SUL at the terminal, so a new IE is needed to indicate the total maximum power allowed to transmit.

Another problem is that the current standard specifies that the network issues a Reference Signal Receiving Power (RSRP) threshold of the downlink Signal, and the terminal determines which uplink frequency the random access should be initiated on according to the threshold. But this threshold may be different for terminals of different power types. Currently, only SUL terminals with Power Class (Power Class 3, PC3) are considered in the R15 standard, namely, ordinary terminals with the maximum transmitting Power of 23 dBm. But it is possible to introduce a variety of terminal types in the future, for example terminals supporting Power Class (Power Class 2, PC2)26 dBm.

For example, in fig. 1B, the uplink capability is stronger for a terminal of PC 226 d Bm at 3.5GHz and the uplink coverage is larger, but is poorer for a normal terminal of PC 323 dBm. Therefore, the problem of access threshold of terminals with different capabilities needs to be solved.

The technical solution of the present invention is further elaborated below with reference to the drawings and the embodiments.

the embodiment proposes a power control method, which is applied to a terminal, and the functions implemented by the method can be implemented by a processor in the terminal calling a program code, which of course can be stored in a computer storage medium, and it can be seen that the terminal at least includes a processor and a storage medium.

fig. 2 is a schematic flow chart of an implementation of a power control method according to an embodiment of the present invention, as shown in fig. 2, the method includes:

Step S201, the terminal receives first indication information sent by a network side, where the first indication information includes two values, for example, at least two P-MAX values;

step S202, the terminal determines a first compensation parameter and/or a second compensation parameter according to the first indication information, wherein the first compensation parameter is a compensation parameter in a cell selection criterion, and the second compensation parameter is a compensation parameter for selecting a supplementary uplink carrier to initiate random access.

In other embodiments, the first indication information is used to limit uplink transmit power of the terminal on one or more uplink carriers, and is also used to calculate a first backoff parameter and/or a second backoff parameter, where the first backoff parameter is a backoff parameter in a cell selection criterion, and the second backoff parameter is a backoff parameter for selecting a supplemental uplink carrier to initiate random access. At least two values in the first indication information are respectively applied to a normal uplink carrier and at least one supplementary uplink carrier in a cell, wherein each uplink frequency or supplementary uplink carrier corresponds to a value.

In other embodiments, the method comprises: the network side sends first indication information to a terminal, wherein the first indication information comprises at least two values; the first indication information is further used for limiting uplink transmission power of the terminal on one or more uplink carriers, and the first indication information is further used for determining a first compensation parameter and/or a second compensation parameter, where the first compensation parameter is a compensation parameter in a cell selection criterion, and the second compensation parameter is a compensation parameter for selecting a supplementary uplink carrier to initiate random access.

in other embodiments, the sending, by the network side, the first indication information to the terminal includes: and the network side sends first indication information to the terminal through a broadcast message or a dedicated channel.

in other embodiments, the determining, by the terminal, the first compensation parameter according to the first indication information includes: the terminal determines a first compensation parameter according to max (the value of the first indication information-the maximum transmitting power of the terminal, 0); for example, the terminal determines a first compensation parameter Pcompensation according to Pcompensation MAX (PEMAX-Ppowerclass, 0), where PEMAX is a value of P-MAX, and Ppowerclass is a maximum transmission power supported by the terminal.

In other embodiments, for a terminal supporting an uplink supplemental frequency band combination of a current serving cell, a value of the first indication information is a value of a supplemental uplink carrier; for a terminal which does not support the uplink supplementary frequency band combination of the current service cell, the value of the first indication information is the value of a normal uplink carrier; for example, for a terminal supporting the SUL frequency band combination of the current serving cell, the PEMAX is a value of P-MAX _ SUL; for a terminal that does not support the SUL band combination of the current serving cell, the PEMAX is a value of P-MAX _ UL.

In other embodiments, the at least two different P-MAX values include: the terminal maximum transmitting power P-MAX _ SUL allowed on the SUL carrier and the terminal maximum transmitting power P-MAX _ UL allowed on the uplink carrier;

The at least two different P-MAX values comprise: the uplink carrier aggregation method comprises the following steps of maximum terminal transmitting power P-MAX _ SUL allowed on SUL carriers, maximum terminal transmitting power P-MAX _ UL allowed by uplink carriers, and total uplink transmitting power P-MAX _ total allowed by UL cells during aggregation of a plurality of carriers.

In other embodiments, when a cell has multiple SUL carriers, where the maximum transmission power of a terminal allowed on the SUL carriers includes one P-MAX corresponding to each SUL uplink carrier in the multiple SUL carriers.

in other embodiments, the receiving, by the terminal, the first indication information sent by the network side includes:

the terminal receives first indication information sent by a network side through broadcast messages or special signaling.

In other embodiments, the method comprises:

The terminal receives second indication information sent by a network side, wherein the second indication information at least comprises an RSRP threshold, and the RSRP threshold is used for enabling the terminal to select a supplementary uplink carrier to initiate uplink random access;

The terminal initiates uplink random access according to the RSRP threshold and the RSRP measured by the terminal; or the terminal initiates uplink random access according to the RSRP threshold, the RSRP measured by the terminal and a second compensation parameter.

here, the method further includes: and the network side sends second indication information to the terminal through a broadcast message or a dedicated channel, wherein the second indication information at least comprises an RSRP threshold, and the RSRP threshold is used for enabling the terminal to select a supplementary uplink carrier to initiate uplink random access.

in other embodiments, the receiving, by the terminal, second indication information sent by a network side includes: and the terminal receives second indication information sent by the network side through a broadcast message or a special signaling.

In other embodiments, the second indication information further includes whether to turn on a second compensation flag;

When a cell has a plurality of supplemental uplink carriers, the second indication information includes an RSRP Threshold corresponding to each of the plurality of uplink supplemental carrier frequencies, for example, when a cell has a plurality of SUL carriers, the second indication information includes an RSRP Threshold, SUL-RSRP-Threshold, corresponding to each of the plurality of SUL carriers.

In other embodiments, the RSRP thresholds in the second indication information corresponding to terminals supporting different power types are different; correspondingly, the RSRP threshold of the terminal and the RSRP measured by the terminal select a supplemental uplink carrier to initiate uplink random access, including: and when the RSRP measured by the terminal is lower than the RSRP threshold corresponding to the power type of the terminal in the second indication information, the terminal selects a supplementary uplink carrier to access, otherwise, selects the supplementary uplink carrier to initiate uplink random access.

for example, referring to fig. 3C, fig. 3E and fig. 4, fig. 3C shows different cell edges corresponding to terminals with different power levels set on the network side, and as can be seen from fig. 3C, different thresholds are set on the network side for different power levels, for example, the PC2 and the PC3, respectively, because the cell edges of the terminals with different power levels are different, so the coverage is different, and thus different RSRP thresholds are set. Fig. 3E shows different cell edges corresponding to different power levels received by the terminal side, and as can be seen from fig. 3E, for the PC2 terminal, the Threshold corresponding to the PC2 terminal is SUL-RSRP-Threshold _ PC2, and the Threshold corresponding to the PC3 terminal is SUL-RSRP-Threshold _ PC 3. Fig. 4 shows cell edges for different SULs and UL for terminals of different power classes. As can be seen from fig. 4, for the PC2 terminal, the cell edges corresponding to the PC2 terminal are 41 and 42, respectively, and the cell edges corresponding to the PC3 terminal are 43 and 44, respectively.

the RSRP Threshold corresponding to the PC2 terminal is SUL-RSRP-Threshold _ PC2, and the RSRP Threshold corresponding to the PC3 terminal is SUL-RSRP-Threshold _ PC 3; when the RSRP measured by the terminal of the PC2 is lower than the SUL-RSRP-Threshold _ PC2, the terminal of the PC2 selects a supplementary uplink carrier for access, otherwise, selects the supplementary uplink carrier to initiate uplink random access; when the RSRP measured by the terminal of the PC3 is lower than the SUL-RSRP-Threshold _ PC3, the terminal of the PC3 selects a supplementary uplink carrier for access, otherwise, selects the supplementary uplink carrier to initiate uplink random access.

in other embodiments, the initiating, by the terminal, an uplink random access according to the second compensation parameter, the RSRP threshold in the second indication information, and the RSRP measured by the terminal includes:

step A1, the terminal determines a compensated RSRP threshold according to the RSRP threshold in the second indication information and the second compensation parameter;

Step A2, when the RSRP measured by the terminal is lower than the compensated RSRP threshold, the terminal selects a supplementary uplink carrier to initiate random access;

Step A3, when the RSRP measured by the terminal is higher than the compensated RSRP threshold, the terminal selects a normal uplink carrier to initiate random access.

In other embodiments, the second indication information further includes a compensation identifier indicating whether to turn on a second compensation parameter; the terminal initiates uplink random access according to the second compensation parameter, the RSRP threshold in the second indication information, and the RSRP measured by the terminal, and the method includes:

step B1, the terminal determines the compensated RSRP threshold according to the RSRP threshold in the second indication information and the second compensation parameter;

step B2, when the compensation mark indicates not to turn on the second compensation parameter, when the RSRP measured by the terminal is lower than the compensated RSRP threshold, the terminal selects the supplementary uplink carrier to initiate random access; and when the RSRP measured by the terminal is higher than the compensated RSRP threshold, the terminal selects a normal uplink carrier to initiate random access.

Here, the RSRP threshold in the second indication information may include one RSRP threshold or may include a plurality of RSRP thresholds, for example, when one cell has a plurality of supplemental uplink carriers, the second indication information includes one RSRP threshold corresponding to each of the plurality of uplink supplemental carrier frequencies.

In other embodiments, the second indication information further includes a compensation identifier indicating whether to turn on a second compensation parameter; the terminal selects a supplementary uplink carrier to initiate uplink random access according to the second compensation parameter, the RSRP threshold in the second indication information and the RSRP measured by the terminal, and the method comprises the following steps:

step C1, the terminal determines the compensated RSRP threshold according to the RSRP threshold in the second indication information and the second compensation parameter;

step C2, when the compensation identifier indicates to turn on a second compensation parameter, or when the second indication information does not indicate the compensation identifier, and when the RSRP measured by the terminal is lower than the compensated RSRP threshold, the terminal selects a supplementary uplink carrier to initiate uplink random access; and when the RSRP measured by the terminal is higher than the compensated RSRP threshold, the terminal selects a normal uplink carrier to initiate uplink random access.

In other embodiments, the determining, by the terminal, the compensated RSRP threshold according to the RSRP threshold in the second indication information and the second compensation parameter includes: determining a compensated RSRP threshold according to the RSRP threshold after compensation which is equal to the RSRP threshold + the compensation parameter in the second indication information; and the second compensation parameter is max (the value corresponding to the normal uplink carrier in the first indication information-the maximum transmission power of the terminal, 0).

for example, the compensated RSRP Threshold SUL-RSRP-Threshold-ue is determined as SUL-RSRP-Threshold-ue + Pcompensation _ RACH; wherein Pcompensation _ RACH is max (PMAX _ UL-ppowherclass, 0), and represents a compensation parameter for uplink PRACH selection, PMAX _ UL represents a maximum transmission power of a terminal allowed by an uplink carrier, and ppowherclass is a maximum transmission power that can be transmitted by the terminal.

In other embodiments, the method further comprises: and the terminal sends uplink data according to the scheduling of the network side, and the power for sending the uplink data cannot exceed the corresponding value in the first indication information.

Wherein the method further comprises: and the network side receives uplink data sent by the terminal, wherein the power for sending the uplink data cannot exceed a corresponding value in the first indication information, such as P-MAX.

in other embodiments, the method further comprises: the network side sends third indication information to the terminal; the third indication information is carrier frequency information of a target cell, and the carrier frequency information is used for indicating a terminal to select an uplink frequency for initiating random access from a plurality of uplink carriers supported by the target cell during switching.

the terminal receives third indication information sent by a network side; and the terminal initiates random access on an uplink carrier supported by the target cell by adopting the carrier frequency information of the target cell during switching.

in other embodiments, the method further comprises:

the network side sends fourth indication information to the terminal, wherein the fourth indication information is used for limiting the total uplink transmission power of the terminal during the aggregation of a plurality of uplink carriers; for example, the fourth indication information is used to limit the uplink total transmission power P-MAX _ total of the terminal during aggregation of multiple carriers.

the terminal receives fourth indication information sent by a network side; when the terminal activates uplink carrier aggregation to transmit data, the total uplink power cannot exceed the value in the fourth indication information, for example, the terminal activates two uplink carrier aggregation to transmit data and the total uplink power cannot exceed P-MAX _ total.

Two schemes are described below to illustrate the power control method provided by the embodiment of the present invention.

The first scheme is as follows: fig. 3A is a schematic flow chart of an implementation of a power control method according to an embodiment of the present invention, as shown in fig. 3A, the method includes:

step S301, a network side supporting SUL sends first indication information;

The network side supporting the SUL may be a cell supporting the SUL (i.e., a SUL cell);

The first indication information is P-MAX, the P-MAX value is used to limit uplink transmit power of the terminal on one or more uplink carriers, and is used to calculate a first backoff parameter (Pcompensation) and/or calculate a second backoff parameter, where the second backoff parameter is a backoff parameter selected by the uplink PRACH. Wherein the first compensation parameter is a compensation parameter (Pcompensation) in a cell selection criterion;

In the implementation process, the network side supporting the SUL may send a plurality of P-MAX values, including: P-MAX, e.g., P-MAX _ UL (maximum terminal transmit power allowed for normal uplink carriers), and P-MAX _ SUL (maximum terminal transmit power allowed for SUL carriers, where if a cell has multiple SUL carriers, one P-MAX is corresponding to each uplink carrier).

Wherein, the sending mode of step 1 includes: the first sending mode is as follows: sending through broadcast message, such as SIB1, suitable for idle cell selection or cell reselection, used before access; and a second transmission mode: sending through a special signaling, and informing a terminal of relevant configuration information in a newly added SUL cell when the added SUL cell is an auxiliary node or an auxiliary carrier or an auxiliary cell (carrier aggregation or dual connectivity); and a third sending mode: and informing the terminal of the relevant configuration information of the target cell through special signaling transmission, such as transmission through MobilityControlInfo.

Step S302, the terminal receives the first indication information and calculates a first compensation parameter according to the first indication information;

Wherein the first compensation parameter is a compensation parameter (Pcompensation) in a cell selection criterion;

The calculation method comprises the following steps:

Pcompensation＝max(PEMAX-Ppowerclass,0)；

wherein, PEMAX is the value of P-MAX, Ppowerclass is the maximum transmitting power supported by the terminal;

a) for a terminal supporting the SUL frequency band combination of the current service cell (for a terminal supporting the uplink supplementary frequency band combination of the current service cell), PEMAX used for calculating Pcompennsation is a value of P-MAX _ SUL;

b) And for the terminal which does not support the SUL frequency band combination of the current service cell, the PEMAX for calculating the Pcomp is the value of P-MAX _ UL.

step S303, the network side sends second indication information;

The second indication information is an RSRP Threshold (SUL-RSRP-Threshold), and the RSRP Threshold is used for the terminal to select a supplementary uplink carrier for sending uplink random access, that is: when the RSRP measured by the terminal is lower than the threshold, the terminal selects to access the SUL carrier, and when the RSRP measured by the terminal is higher than the threshold, the terminal selects to access the common UL carrier.

The transmission method of step S303 includes the following three methods: the first sending mode is as follows: the uplink carrier is sent in a broadcast message and is suitable for selecting the uplink carrier in an idle state and using the uplink carrier before access; and a second transmission mode: sending through special signaling, and selecting uplink carrier wave in connection state; and a third sending mode: and sending the uplink access carrier frequency through special signaling, such as through MobilityControlInfo, for informing the uplink access carrier frequency of the target cell in a connection state.

the transmission content of step S303 includes one or more of the following: i) one SUL uplink carrier corresponds to one Threshold SUL-RSRP-Threshold; referring to fig. 3B, the SUL frequency point 1 corresponds to SUL-RSRP-Threshold1, and the SUL frequency point 2 corresponds to SUL-RSRP-Threshold 2; ii) whether to turn on the compensation flag of the second compensation parameter, i.e. the compensation flag of the compensation parameter of the Threshold SUL-RSRP-Threshold: for example, the offset flag 0 indicates an on offset value, and the offset flag 1 indicates an off offset value; alternatively, the offset flag 1 indicates an on offset value, and the offset flag 0 indicates an off offset value.

Wherein the second compensation parameter is used to compensate for different terminal power types.

and step S304, the terminal receives the second indication information and selects a supplementary uplink carrier to initiate uplink random access according to the measured RSRP.

a) if the second indication information indicates that the compensation value is not started, when the RSRP measured by the terminal is lower than the Threshold SUL-RSRP-Threshold, the terminal accesses the SUL frequency; the terminal accesses the common UL frequency if the RSRP measured by the terminal is higher than the Threshold SUL-RSRP-Threshold;

b) if the second indication information does not indicate whether to start the compensation value or indicate to start the compensation value, the compensated Threshold SUL-RSRP-Threshold-ue is calculated as follows:

wherein, SUL-RSRP-Threshold is a Threshold issued in the broadcast message (second indication information), PMAX _ UL is a maximum transmission power of the terminal allowed on the common UL, and Ppowerclass is a maximum transmission power that the terminal can send.

Referring to fig. 3D, when PMAX _ UL is 26dBm, that is, the maximum allowed transmit power of the terminal on the normal UL frequency is 26 Bm; for a PC2 terminal supporting a transmit power of 26dBm on the normal ul (regular ul), SUL-RSRP-Threshold is equal to the Threshold issued in the broadcast message; for a terminal supporting PC3 with transmit power of 23dBm on the normal UL.

SUL-RSRP-Threshold-ue＝SUL-RSRP-Threshold+Pcompensation_RACH

＝SUL-RSRP-Threshold+max(PMAX_UL-Ppowerclass,0)

＝SUL-RSRP-Threshold+3dB

step S305, the network side sends third indication information;

The third indication information is carrier frequency information of the target cell, where the carrier frequency information includes downlink carrier frequency information and uplink carrier frequency information, and the uplink carrier frequency information is used to indicate the terminal to select an uplink frequency for initiating random access from multiple uplink carriers supported by the target cell during handover, that is, to indicate on which uplink frequency of the target SUL cell the terminal initiates random access during handover.

in the implementation, the transmission method of step S305: when switching, the terminal informs the relevant configuration information of the target cell through special signaling transmission, such as MobilityControlInfo transmission;

In the implementation, the transmission content of step S305: can be informed by ARFCN frequency point number information.

step S306, the terminal receives the third indication information of the network, and the terminal initiates random access to the target cell by adopting the carrier frequency information in the third indication information during switching.

Step S307, the network side supporting the SUL sends fourth indication information;

the fourth indication information is used for limiting the total uplink transmission power of the terminal during the aggregation of a plurality of uplink carriers; for example, the fourth indication information is used to limit the total uplink transmission power of the terminal during aggregation of multiple carriers, that is, the total P-MAX _ total allowed by the SUL cell.

In the implementation process, the transmission modes include the following four modes:

The first sending mode is as follows: sending through broadcast message, such as SIB1, suitable for idle cell selection or cell reselection, used before access;

and a second transmission mode: sending through a special signaling, and informing a terminal of relevant configuration information in a newly added SUL cell when the added SUL cell is an auxiliary node or an auxiliary carrier or an auxiliary cell (carrier aggregation or dual connectivity);

And a third sending mode: informing the terminal of the relevant configuration information of the target cell through special signaling transmission, such as the transmission through MobilityControlInfo;

and a fourth sending mode: and through special signaling transmission, when the SUL cell uplink carrier aggregation is activated, informing the terminal of the total allowed uplink total transmission power.

Step S308, after the terminal initiates random access at a proper uplink frequency to enter a connection state, the uplink transmitting power transmitted by the terminal at the same time of common UL or SUL or UL + SUL cannot exceed the P-MAX value broadcast in the first indication information and the third indication information;

If the P-MAX value is not received, then:

A) the terminal adopts default transmitting power on the uplink frequency, namely 23 dBm; alternatively, the first and second electrodes may be,

B) The terminal performs uplink transmission on the uplink frequency according to the capability of the terminal, namely the maximum transmission of the terminal of the PC2 is 26dBm, and the maximum transmission of the terminal of the PC3 is 23 dBm.

scheme II: (distinction from scheme one in the sending of second indication information and corresponding terminal behavior)

step S311, the network side sends second indication information;

One SUL uplink carrier corresponds to a plurality of thresholds SUL-RSRP-Threshold, which correspond to different terminal power types. For example, referring to fig. 3E, SUL-RSRP-Threshold _ PC2 is the Threshold for PC2 terminals on normal UL, and SUL-RSRP-Threshold _ PC3 is the Threshold for PC3 terminals on normal UL.

In the implementation process, the sending mode comprises the following steps: the first sending mode is as follows: the uplink carrier is sent in a broadcast message and is suitable for selecting the uplink carrier in an idle state and using the uplink carrier before access; and a second transmission mode: sending through special signaling, and selecting uplink carrier wave in connection state; and a third sending mode: and sending the uplink access carrier frequency through special signaling, such as through MobilityControlInfo, for informing the uplink access carrier frequency of the target cell in a connection state.

Step S312, the terminal receives the second indication information, selects a supplementary uplink carrier according to the measured RSRP and initiates uplink random access;

a) The terminal of the PC2 selects the SUL frequency when the measured RSRP is lower than the Threshold SUL-RSRP-Threshold _ PC2, otherwise selects the UL frequency;

b) The terminal of the PC3 selects the UL frequency when the measured RSRP is lower than the Threshold SUL-RSRP-Threshold _ PC3, otherwise selects the SUL frequency;

example one

step S11, the SUL cell sends: P-MAX _ UL 26dBm, P-MAX _ SUL 23dBm, P-MAX _ total 26dBm

Step S12, the terminal performs calculation of cell selection Pcompensation:

Step a) SUL-enabled PC3UE (23dBm) does not need compensation when Pcompensation is MAX (P-MAX _ SUL-Ppowerclass, 0) is 0dB (23-23,0) during cell selection;

step b) when PC3UE (23dBm) which does not support SUL selects a cell, Pcompensation MAX (P-MAX _ UL-Ppowerclass,0) 3dB (26-23, 0);

step c) PC2UE (26dBm) not supporting SUL, when selecting cell, Pcompensation ═ MAX (P-MAX _ UL-Ppowerclass,0) ═ 0dB (26-26, 0);

step S13, the terminal performs calculation of the Threshold SUL-RSRP-Threshold for selecting the uplink carrier, which only needs to be calculated by the UE supporting SUL.

a) The UE thresholds for PC3 are:

SUL-RSRP-Threshold-ue＝UL-RSRP-Threshold+Pcompensation_RACH

＝UL-RSRP-Threshold+(P-MAX_SUL-Ppowerclass,0)

＝UL-RSRP-Threshold+3dB

b) The UE thresholds for PC2 are:

SUL-RSRP-Threshold-ue＝UL-RSRP-Threshold+Pcompensation_RACH

＝UL-RSRP-Threshold+(P-MAX_SUL-Ppowerclass,0)

UL-RSRP-Threshold (no compensation required)

example two:

Step S21, the SUL cell sends: P-MAX _ UL 23dBm, P-MAX _ SUL 23dBm, P-MAX _ total 23 dBm;

step S22, the terminal calculates the cell selection Pcommunity;

a) PC3UE (23dBm) supporting SUL, when selecting cell, Pcompensation ═ MAX (P-MAX _ SUL-Ppowerclass, 0) ═ 0 ═ 23-23,0 ═ 0dB, no compensation is needed;

b) When the PC3UE not supporting SUL selects a cell, Pcompensation ═ MAX (P-MAX _ UL-Ppowerclass,0) ═ 23-23,0 ═ 0 dB;

c) When PC2UE (26dBm) which does not support SUL is selected in a cell, Pcompensation ═ MAX (P-MAX _ UL-Ppowerclass,0) ═ 0 ═ 23-26,0 ═ 0 dB;

step S23, the terminal performs calculation of the Threshold SUL-RSRP-Threshold for selecting the uplink carrier, which only needs to be calculated by the UE supporting SUL.

a) the UE thresholds for PC3 are:

SUL-RSRP-Threshold-ue＝UL-RSRP-Threshold+Pcompensation_RACH

＝UL-RSRP-Threshold+(P-MAX_SUL-Ppowerclass,0)

UL-RSRP-Threshold (no compensation required)

b) The UE thresholds for PC2 are:

SUL-RSRP-Threshold-ue＝UL-RSRP-Threshold+Pcompensation_RACH

＝UL-RSRP-Threshold+(P-MAX_SUL-Ppowerclass,0)

UL-RSRP-Threshold (no compensation required)

Example three:

step S31, the SUL cell sends: P-MAX _ UL 26dBm, P-MAX _ SUL 26dBm, and P-MAX _ total 26dBm

Step S32, the terminal calculates the cell selection Pcommunity;

a) PC3UE (23dBm) supporting SUL requires compensation when Pcompensation is MAX (P-MAX _ SUL-Ppowerclass, 0) is (26-23,0) is 3dB at the time of cell selection;

b) PC2UE (26dBm) supporting SUL, when selecting cell, Pcompensation ═ MAX (P-MAX _ SUL-Ppowerclass, 0) ═ 0 (26-26,0) ═ 0dB, no compensation is needed;

c) when the PC3UE not supporting SUL selects a cell, Pcompensation ═ MAX (P-MAX _ UL-Ppowerclass,0) ═ 26-23,0 ═ 3 dB;

d) When PC2UE (26dBm) which does not support SUL is selected in a cell, Pcompensation ═ MAX (P-MAX _ UL-Ppowerclass,0) ═ 0dB (26-26, 0);

step S33, the terminal calculates the Threshold SUL-RSRP-Threshold for selecting the uplink carrier, and only the UE supporting SUL needs to calculate the Threshold;

The UE thresholds for PC3 are:

SUL-RSRP-Threshold-ue＝UL-RSRP-Threshold+Pcompensation_RACH

＝UL-RSRP-Threshold+(P-MAX_SUL-Ppowerclass,0)

＝UL-RSRP-Threshold+3dB

The UE thresholds for PC2 are:

SUL-RSRP-Threshold-ue＝UL-RSRP-Threshold+Pcompensation_RACH

＝UL-RSRP-Threshold+(P-MAX_SUL-Ppowerclass,0)

UL-RSRP-Threshold (no compensation required)

In the embodiment of the invention, an SUL cell broadcasts P-MAX of different uplink carriers; calculating compensation parameters selected by the cell according to different P-MAX; the total P-MAX allowed by the SUL cell can be issued through a broadcast message or a special signaling; selecting a threshold RSRP of an uplink carrier in the SUL cell, wherein terminals with different power levels need to be considered; compensating the RSRP thresholds of the terminals with different power levels through a formula; controlling whether the compensation is disabled or not by indicating; and issuing different thresholds aiming at each power level terminal.

compared with the prior art, the embodiment has the following technical advantages: and considering terminals with different power grades and terminals supporting SUL uplink aggregation, fully utilizing uplink resources and selecting a proper uplink resident frequency point.

in this embodiment, a power control method is provided, and fig. 5 is a schematic diagram of an implementation flow of the power control method according to the embodiment of the present invention, as shown in fig. 5, the method includes:

Step S501, a network side sends first indication information and second indication information;

the first indication information comprises P-MAX, and the second indication information comprises an RSRP threshold for selecting uplink frequency;

step S502, the terminal selects a cell according to the first indication information and the second indication information, and selects a resident cell;

Step S503, the terminal selects proper uplink frequency to initiate random access, and completes the connection with the network side;

step S504, the network side scheduling terminal sends uplink data;

step S505, the terminal sends data on the uplink frequency, and the power cannot exceed the corresponding P-MAX broadcast by the network side;

Step S506, the network side issues a switching command;

The switching command carries third indication information, wherein the third indication information is carrier frequency information of the target cell, so that the terminal is informed of the uplink frequency of the target cell in the switching command;

step S507, the terminal receives the switching command issued by the network side, and initiates random access on the third indication information (namely the uplink frequency of the target cell) indicated in the switching command to complete the switching process;

Step S508, the network side issues the fourth instruction information;

The fourth indication information comprises aggregated P-MAX _ total, and the fourth indication information is used for activating the terminal to send data on a plurality of uplink frequencies;

Step S509, the terminal receives the fourth indication information, and activates two uplink carriers to aggregate and send data, where the total power cannot exceed P-MAX _ total.

based on the foregoing embodiments, an embodiment of the present invention provides a power control apparatus, where the apparatus includes units and modules included in the units, and the power control apparatus may be implemented by a processor in a power control device (terminal); of course, the implementation can also be realized through a specific logic circuit; in implementation, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.

Fig. 6 is a schematic diagram of a component structure of a power control apparatus according to an embodiment of the present invention, and as shown in fig. 6, the apparatus 600 includes a first receiving unit 601 and a first determining unit 602, where:

A first receiving unit 601, configured to receive first indication information sent by a network side, where the first indication information includes at least two values;

a first determining unit 602, configured to determine a first backoff parameter and/or a second backoff parameter according to the first indication information, where the first backoff parameter is a backoff parameter in a cell selection criterion, and the second backoff parameter is a backoff parameter for selecting a supplemental uplink carrier to initiate random access.

the power control device at the network side comprises a third sending unit, a second sending unit and a control unit, wherein the third sending unit is used for sending first indication information to the terminal, and the first indication information comprises at least two values; the first indication information is further used for limiting uplink transmission power of the terminal on one or more uplink carriers, and the first indication information is further used for determining a first compensation parameter and/or a second compensation parameter, where the first compensation parameter is a compensation parameter in a cell selection criterion, and the second compensation parameter is a compensation parameter for selecting a supplementary uplink carrier to initiate random access.

In other embodiments, the first indication information is further used to limit uplink transmission power of the terminal on one or more uplink carriers.

In other embodiments, the first determining unit is configured to determine a first compensation parameter according to MAX (the value of the first indication information — the maximum transmit power of the terminal, 0), where the first compensation parameter is a compensation parameter in the cell selection criterion, for example, determine the first compensation parameter Pcompensation according to Pcompensation ═ MAX (PEMAX-ppowherclass, 0), where PEMAX is a value of P-MAX, and ppowherclass is a maximum transmit power supported by the terminal.

in other embodiments, the first receiving unit is configured to receive at least two P-MAX values sent by a network side through a broadcast message; or receiving at least two P-MAX values sent by the network side through dedicated signaling.

In other embodiments, the apparatus comprises:

A second receiving unit, configured to receive second indication information sent by a network side, where the second indication information at least includes an RSRP threshold, and the RSRP threshold is used for enabling a terminal to select a supplementary uplink carrier to initiate uplink random access;

a first access unit, configured to initiate, by the terminal, uplink random access according to the RSRP threshold and the RSRP measured by the terminal; or the terminal initiates uplink random access according to the RSRP threshold, the RSRP measured by the terminal and a second compensation parameter.

in other embodiments, the second receiving unit is configured to: and receiving second indication information sent by the network side through a broadcast message or special signaling.

In other embodiments, the second indication information further includes a compensation identifier of whether to turn on the second compensation parameter, that is, whether to turn on the compensation parameter of RSRP Threshold SUL-RSRP-Threshold;

when a cell has a plurality of supplemental uplink carrier frequencies, the second indication information includes an RSRP threshold corresponding to each uplink supplemental carrier frequency in the plurality of uplink supplemental carrier frequencies.

In other embodiments, the RSRP thresholds in the second indication information corresponding to terminals supporting different power types are different; correspondingly, the first access unit is configured to: and when the RSRP measured by the terminal is lower than the RSRP threshold corresponding to the power type of the terminal in the second indication information, the terminal selects a supplementary uplink carrier to initiate random access, otherwise, the terminal selects a normal uplink carrier to initiate random access.

For example, the RSRP Threshold corresponding to the PC2 terminal is SUL-RSRP-Threshold _ PC2, and the RSRP Threshold corresponding to the PC3 terminal is SUL-RSRP-Threshold _ PC 3; correspondingly, the first access unit is configured to: when the RSRP measured by the terminal of the PC2 is lower than the SUL-RSRP-Threshold _ PC2, selecting SUL frequency access according to the first compensation parameter, otherwise, selecting UL frequency access according to the first compensation parameter; and when the RSRP measured by the terminal of the PC3 is lower than the SUL-RSRP-Threshold _ PC3, selecting UL frequency access according to the first compensation parameter, otherwise, selecting SUL frequency access according to the first compensation parameter.

in other embodiments, the first access unit is configured to: when the compensation identifier indicates that the second compensation parameter is not started, if the RSRP measured by the terminal is lower than the compensated RSRP threshold, the terminal selects a supplementary uplink carrier to initiate random access; if the RSRP measured by the terminal is higher than the compensated RSRP threshold, the terminal selects a normal uplink carrier to initiate random access;

The first access unit is further configured to: when the compensation identifier indicates that a second compensation parameter is started, or when the second indication information does not indicate the compensation identifier, if the RSRP measured by the terminal is lower than the compensated RSRP threshold, the terminal selects a supplementary uplink carrier to initiate random access; and if the RSRP measured by the terminal is higher than the compensated RSRP threshold, the terminal selects a normal uplink carrier to initiate random access.

in other embodiments, the apparatus further comprises a second determining unit configured to: determining a compensated RSRP threshold according to the RSRP threshold + compensation parameter in the second indication information; and the second compensation parameter is max (the value corresponding to the normal uplink carrier in the first indication information-the maximum transmission power of the terminal, 0).

determining a compensated RSRP Threshold SUL-RSRP-Threshold-ue, for example, according to SUL-RSRP-Threshold-ue ═ SUL-RSRP-Threshold + Pcompensation _ RACH; wherein Pcompensation _ RACH is max (PMAX _ UL-ppowherclass, 0), and represents a compensation parameter for uplink PRACH selection, PMAX _ UL represents a maximum transmission power of a terminal allowed by an uplink carrier, and ppowherclass is a maximum transmission power that can be transmitted by the terminal.

In other embodiments, the apparatus further comprises:

And the first sending unit is used for sending the uplink data according to the scheduling of the network side, and the power for sending the uplink data cannot exceed the corresponding value in the first indication information.

In other embodiments, the apparatus further comprises: a third receiving unit, configured to receive third indication information sent by a network side; the third indication information is carrier frequency information of a target cell, and the carrier frequency information is used for indicating a terminal to select an uplink frequency for initiating random access from a plurality of uplink carriers supported by the target cell during switching;

and the second access unit is used for initiating random access on the uplink carrier wave supported by the target cell by adopting the carrier frequency information of the target cell during switching.

in other embodiments, the apparatus further comprises: a fourth receiving unit, configured to receive fourth indication information sent by a network side, where the fourth indication information is used to limit total uplink transmit power of a terminal during aggregation of multiple uplink carriers;

And the second sending unit is used for ensuring that the uplink total power cannot exceed the value in the fourth indication information when the uplink carrier aggregation is activated to send data.

Here, the network side further includes a sixth sending unit, configured to send fourth indication information to the terminal, where the fourth indication information is used to limit uplink total transmit power of the terminal when multiple uplink carriers are aggregated.

an embodiment of the present invention further provides a power control apparatus, where the apparatus includes each included unit and each module included in each unit, and the apparatus may be implemented by a processor in a power control device (a network side device such as a base station); of course, the implementation can also be realized through a specific logic circuit; in implementation, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.

The power control device includes:

in other embodiments, the first sending unit is configured to send the first indication information to the terminal through a broadcast message or a dedicated channel.

in other embodiments, the apparatus further comprises: a fourth sending unit, configured to send second indication information to the terminal through a broadcast message or a dedicated channel, where the second indication information at least includes an RSRP threshold, and the RSRP threshold is used to enable the terminal to select a supplementary uplink carrier to initiate uplink random access.

in other embodiments, the second indication information further includes whether to start a second compensation parameter, where the second compensation parameter is a compensation identifier for selecting a compensation parameter for supplementing the uplink carrier to initiate random access, for example, whether to start a compensation parameter of RSRP Threshold SUL-RSRP-Threshold; when a cell has a plurality of supplemental uplink carrier frequencies, the second indication information includes an RSRP threshold corresponding to each uplink supplemental carrier frequency in the plurality of uplink supplemental carrier frequencies.

in other embodiments, the apparatus further comprises: a fifth receiving unit, configured to receive uplink data sent by the terminal, where a power for sending the uplink data cannot exceed a corresponding value, for example, P-MAX, in the first indication information.

In other embodiments, the apparatus further comprises: a fifth sending unit, configured to send third indication information to the terminal; the third indication information is carrier frequency information of a target cell, and the carrier frequency information is used for indicating a terminal to select an uplink frequency for initiating random access from a plurality of uplink carriers supported by the target cell during switching.

in other embodiments, the apparatus further comprises: a sixth sending unit, configured to send fourth indication information to the terminal, where the fourth indication information is used to limit total uplink transmit power of the terminal during aggregation of multiple uplink carriers.

The above description of the apparatus embodiments, similar to the above description of the method embodiments, has similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the apparatus according to the invention, reference is made to the description of the embodiments of the method according to the invention for understanding.

it should be noted that, in the embodiment of the present invention, if the power control method at the terminal side or the network side is implemented in the form of a software functional module and sold or used as a standalone product, it may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions to enable a power control device (which may be a terminal or a network side device, etc.) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

correspondingly, an embodiment of the present invention provides a power control device, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor implements the steps in the power control method on the terminal side when executing the program, or implements the steps in the power control method on the network side when executing the program.

an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the power control method described above, or the computer program, when executed by a processor, implements the steps in the power control method described above on the network side.

Here, it should be noted that: the above description of the storage medium and device embodiments is similar to the description of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and the apparatus according to the invention, reference is made to the description of the embodiments of the method according to the invention.

it should be noted that fig. 7 is a schematic diagram of a hardware entity of a power control device in an embodiment of the present invention, and as shown in fig. 7, the hardware entity of the power control device 700 (including a terminal or a network side device) includes: a processor 701, a communication interface 702, and a memory 703, wherein

The processor 701 generally controls the overall operation of the power control device 700.

communication interface 702 may enable the power control device to communicate with other terminals or servers over a network.

the Memory 703 is configured to store instructions and applications executable by the processor 701, and may also buffer data to be processed or already processed by each module in the processor 701 and the power control device 700, and may be implemented by a FLASH Memory (FLASH) or a Random Access Memory (RAM).

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention. The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit. Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: a removable storage device, a Read Only Memory (ROM), a magnetic or optical disk, or the like, may store the program code.

alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions to enable a power control device (which may be a terminal or a network side device, etc.) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a magnetic or optical disk, or other various media that can store program code.

the above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and all such changes or substitutions are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A method of power control, the method comprising:

a terminal receives first indication information sent by a network side, wherein the first indication information comprises at least two values;

2. the method of claim 1, wherein the first indication information is further used to limit uplink transmission power of the terminal on one or more uplink carriers.

3. The method of claim 1, wherein at least two values of the first indication information are applied to a normal uplink carrier and at least one supplementary uplink carrier in a cell, respectively, and wherein each of the normal uplink carrier and the supplementary uplink carrier corresponds to one value.

4. The method of claim 1, wherein the terminal determines the first compensation parameter according to the first indication information, and wherein the determining the first compensation parameter comprises:

and the terminal determines a first compensation parameter according to max (the value of the first indication information-the maximum transmitting power of the terminal, 0).

5. The method of claim 4, wherein for a terminal supporting an uplink supplemental frequency band combination of a current serving cell or a terminal supporting an uplink supplemental frequency of the current serving cell, the value of the first indication information is a value of a supplemental uplink carrier; otherwise, the value of the first indication information is the value of a normal uplink carrier.

6. the method according to any one of claims 1 to 5, wherein the receiving, by the terminal, the first indication information sent by the network side includes:

7. The method according to any one of claims 1 to 5, characterized in that it comprises:

The terminal receives second indication information sent by a network side, wherein the second indication information at least comprises an RSRP threshold, and the RSRP threshold is used for enabling the terminal to select a supplementary uplink carrier to initiate random access;

8. The method according to claim 7, wherein the terminal receives second indication information sent by the network side, and the method comprises: and the terminal receives second indication information sent by the network side through a broadcast message or a special signaling.

9. The method of claim 7, wherein the second indication information comprises an RSRP threshold for each of a plurality of supplemental uplink carriers when a cell has the plurality of supplemental uplink carriers.

10. The method of claim 7, wherein RSRP thresholds in the second indication information for terminals supporting different power types are different;

Correspondingly, the terminal initiates uplink random access according to the RSRP threshold and the RSRP measured by the terminal, including:

and when the RSRP measured by the terminal is lower than the RSRP threshold corresponding to the power type of the terminal in the second indication information, the terminal initiates uplink random access according to the selected supplementary uplink carrier, otherwise, the terminal selects a normal uplink carrier to initiate uplink random access.

11. The method of claim 7, wherein the terminal initiates uplink random access according to the second backoff parameter, the RSRP threshold in the second indication information, and the RSRP measured by the terminal, and comprises:

The terminal determines a compensated RSRP threshold according to the RSRP threshold in the second indication information and the second compensation parameter;

When the RSRP measured by the terminal is lower than the compensated RSRP threshold, the terminal selects a supplementary uplink carrier to initiate random access;

And when the RSRP measured by the terminal is higher than the compensated RSRP threshold, the terminal selects a normal uplink carrier to initiate random access.

12. the method of claim 7, wherein the second indication information further comprises a compensation flag indicating whether to turn on a second compensation parameter; the terminal initiates uplink random access according to the second compensation parameter, the RSRP threshold in the second indication information, and the RSRP measured by the terminal, and the method includes:

the terminal determines the compensated RSRP threshold according to the RSRP threshold in the second indication information and the second compensation parameter;

When the compensation identifier indicates that a second compensation parameter is not started, if the RSRP measured by the terminal is lower than the compensated RSRP threshold, the terminal selects a supplementary uplink carrier to initiate random access;

13. the method of claim 7, wherein the second indication information further comprises a compensation flag indicating whether to turn on a second compensation parameter; the terminal selects a supplementary uplink carrier to initiate uplink random access according to the second compensation parameter, the RSRP threshold in the second indication information and the RSRP measured by the terminal, and the method comprises the following steps:

When the compensation identifier indicates that a second compensation parameter is started, or when the second indication information does not indicate the compensation identifier, and when the RSRP measured by the terminal is lower than the compensated RSRP threshold, the terminal selects a supplementary uplink carrier to initiate uplink random access; and when the RSRP measured by the terminal is higher than the compensated RSRP threshold, the terminal selects a normal uplink carrier to initiate uplink random access.

14. the method according to any one of claims 11 to 13, wherein the terminal determines the compensated RSRP threshold according to the RSRP threshold in the second indication information and the second compensation parameter, and comprises:

Determining a compensated RSRP threshold according to the compensated RSRP threshold which is equal to the RSRP threshold plus a second compensation parameter in the second indication information;

And the second compensation parameter is max (the value corresponding to the normal uplink carrier in the first indication information-the maximum transmission power of the terminal, 0).

15. the method according to any one of claims 7 to 13, further comprising:

And the terminal sends uplink data according to the scheduling of the network side, and the power for sending the uplink data cannot exceed the corresponding value in the first indication information.

16. The method according to any one of claims 7 to 13, further comprising:

the terminal receives third indication information sent by a network side; the third indication information includes carrier frequency information of a target cell supporting a plurality of uplink carriers, and the carrier frequency information is used for indicating a terminal to select an uplink frequency for initiating random access from the plurality of uplink carriers supported by the target cell during switching;

And the terminal initiates random access on an uplink carrier supported by the target cell by adopting the carrier frequency information of the target cell during switching.

17. The method according to any one of claims 7 to 13, further comprising:

The terminal receives fourth indication information sent by a network side, wherein the fourth indication information is used for limiting the total uplink transmission power of the terminal during the aggregation of a plurality of uplink carriers;

And the total uplink power of the terminal cannot exceed the value in the fourth indication information when the terminal activates uplink carrier aggregation to send data.

18. a power control apparatus, characterized in that the apparatus comprises:

19. a method of power control, the method comprising:

20. The method of claim 19, wherein the network side sends the first indication information to the terminal, and wherein the sending comprises:

And the network side sends first indication information to the terminal through a broadcast message or a special signaling.

21. The method of claim 19, wherein the method comprises:

And the network side sends second indication information to the terminal through a broadcast message or a dedicated channel, wherein the second indication information at least comprises an RSRP threshold, and the RSRP threshold is used for enabling the terminal to select a supplementary uplink carrier to initiate uplink random access.

22. The method of claim 21, wherein the second indication information further comprises a compensation flag indicating whether to turn on a second compensation parameter.

23. The method of claim 21, wherein the second indication information comprises an RSRP threshold for each of a plurality of uplink supplemental carrier frequencies when a cell has the plurality of supplemental uplink carrier frequencies.

24. The method of any one of claims 19 to 23, further comprising:

and the network side receives uplink data sent by the terminal, wherein the power for sending the uplink data cannot exceed the corresponding value in the first indication information.

25. The method of any one of claims 19 to 23, further comprising:

The network side sends third indication information to the terminal; the third indication information is carrier frequency information of a target cell, and the carrier frequency information is used for indicating a terminal to select an uplink frequency for initiating random access from a plurality of uplink carriers supported by the target cell during switching.

26. the method of any one of claims 19 to 23, further comprising:

and the network side sends fourth indication information to the terminal, wherein the fourth indication information is used for limiting the total uplink transmission power of the terminal during the aggregation of a plurality of uplink carriers.

27. A power control apparatus, characterized in that the apparatus comprises:

28. A power control apparatus comprising a memory and a processor, the memory storing a computer program operable on the processor, wherein the processor when executing the program implements the steps in the power control method of any one of claims 1 to 17; alternatively, the processor implements the steps in the power control method of any one of claims 19 to 26 when executing the program.

29. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the power control method according to any one of claims 1 to 17; alternatively, the processor implements the steps in the power control method of any one of claims 19 to 26 when executing the program.