CN110381527B

CN110381527B - Power headroom reporting method, TPC command sending method and device, base station and terminal

Info

Publication number: CN110381527B
Application number: CN201810300468.0A
Authority: CN
Inventors: 姚珂; 高波; 鲁照华; 黄河
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-04-04
Filing date: 2018-04-04
Publication date: 2022-07-15
Anticipated expiration: 2038-04-04
Also published as: WO2019192538A1; CN110381527A

Abstract

The application discloses a power headroom reporting method, a TPC command sending method and device, a base station and a terminal, wherein the power headroom reporting method comprises the following steps: when a trigger condition of a Power Headroom Report (PHR) is met, determining parameters of the PHR and a PHR value, wherein the parameters of the PHR comprise power control parameters of the PHR; the PHR is transmitted in accordance with a predefined PHR format. According to the method and the device, the PHR is sent according to the format of the power control parameter of the predefined indication PHR, so that the receiving node can definitely know the power control parameter configuration of the beam corresponding to the PHR sent by the sending node.

Description

Power headroom reporting method, TPC command sending method and device, base station and terminal

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a power headroom reporting method, a TPC command sending method and apparatus, a base station, and a terminal.

Background

As a fifth generation mobile communication system, the 5G NR needs to support many different types of application scenarios, and also needs to support a traditional frequency band, a high frequency band, and a beam mode at the same time, which brings a great challenge to the design of power control.

When a base station schedules uplink transmission of a User Equipment (UE), many factors need to be determined, including time-frequency resources, transmission rate, modulation and coding scheme, Multiple-Input Multiple-Output (MIMO) scheme, and the like, and according to the quality of reception, the base station needs to determine which factors need to be adjusted for subsequent scheduling, such as improving the modulation and coding scheme, increasing the transmission power, and the like. But the base station does not know whether the current transmit power of the UE is about to reach the maximum transmit power, and thus whether the transmit power can be further increased. Therefore, there is a mechanism in Long Term Evolution (LTE), in which a UE sends a Power Headroom Report (PHR) to a base station to explicitly inform a difference between a transmission Power required for current transmission and a maximum transmission Power. Reporting of the PHR has a trigger condition, wherein the change of the path loss exceeds a certain threshold. The NR technique introduces a transmission mode of beams, and both a base station and a User Equipment (UE) support multiple beams. To support power control of a beam, power control parameters are configured in 3 parts: open-loop power control parameters, closed-loop power control parameters, and Reference Signal (RS) parameters of path loss. The method for supporting multi-beam power control in 5G NR may require UE to measure path loss of multiple RSs simultaneously, but how to implement support for multi-beam power control configuration in the triggering condition of PHR in the related art is not clear at present.

In addition, if the PHR reports only the real PHR of the { j, k, l } associated with the real transmission, or reports the PHR of the fixed { j, k, l } parameter, there may be no opportunity to report the PHR for other { j, k, l }, i.e. there is an unfair problem in the current PHR reporting.

Disclosure of Invention

In order to solve the above technical problem, the present invention provides a power headroom reporting method, a TPC command sending method and apparatus, a base station, and a terminal, which are capable of supporting power control configuration of multiple beams in a trigger condition of a PHR.

In order to achieve the purpose of the invention, the technical scheme of the embodiment of the invention is realized as follows:

the embodiment of the invention provides a power headroom reporting method, which comprises the following steps:

when a trigger condition of a Power Headroom Report (PHR) is met, determining parameters of the PHR and a PHR value, wherein the parameters of the PHR comprise power control parameters of the PHR;

the PHR is transmitted in accordance with a predefined PHR format.

The embodiment of the invention also provides a power headroom reporting device, which comprises a determining unit and a sending unit, wherein:

the device comprises a determining unit, a reporting unit and a reporting unit, wherein the determining unit is used for determining parameters and a Power Headroom Report (PHR) value of the PHR after detecting that the PHR reaches a trigger condition, and the parameters of the PHR comprise power control parameters of the PHR;

A sending unit, configured to send the PHR value to the first communication node according to a format of a predefined power control parameter indicating the PHR.

The embodiment of the invention also provides a terminal, which comprises a processor and a memory; the processor is configured to execute a power headroom reporting program stored in the memory to implement the steps of the power headroom reporting method as described in any of the above.

Embodiments of the present invention also provide a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps of the power headroom reporting method as described in any of the above.

The embodiment of the invention also provides a power headroom reporting method, which comprises the following steps:

the base station informs the terminal of the configuration parameters of the PHR through the downlink message,

the configuration parameters of the PHR include at least one of:

reporting a PHR according to the number k of the reference signal RS of each path loss PL;

reporting a PHR according to the number l of each closed-loop power control parameter;

reporting a PHR according to the number l of the closed-loop power control parameter associated with the number k of the RS of each PL;

Reporting a PHR according to the combination of the number k of the RS of each PL and the number l of the closed-loop power control parameter associated with the number k of the RS of the PL;

and reporting a preset number of PHRs for each CC, BWP or BWP group.

Further, the base station also notifies the terminal of at least one of:

at least one power control parameter, wherein the power control parameter comprises a number j of an open-loop power control parameter, a number k of an RS parameter of the path loss and a number l of a closed-loop power control parameter;

a trigger type of the PHR for determining a power control parameter of the PHR.

The embodiment of the invention also provides a TPC command sending method, which comprises the following steps:

and the base station sends a downlink control information block DCI carrying power control commands (TPC) to the terminals, wherein for each terminal, one Component Carrier (CC) contains one TPC command, or the number of the TPC commands contained in one CC is determined according to the number of the BWPs or the number of activated BWPs, or the number of the TPCs contained in one CC is determined according to the number of closed loop power controls supported by the CC.

a base station sends a downlink control information block DCI carrying power control commands TPC to a terminal, wherein, for each terminal, one component carrier CC comprises l TPC commands, or one CC comprises N TPC commands for each BWP or each activated BWP, and N is the closed-loop power control quantity supported on the BWP.

The embodiment of the invention also provides a TPC command sending device, which comprises a first sending unit, wherein:

a first sending unit, configured to send a downlink control information block DCI carrying a TPC command to a terminal, where for each terminal, one component carrier CC includes one TPC command, or the number of TPC commands included in one CC is determined according to the number of BWPs or the number of activated BWPs, or the number of TPC commands included in one CC is determined according to the number of closed loop power controls supported by the CC.

The embodiment of the invention also provides a TPC command sending device, which comprises a second sending unit, wherein:

a second sending unit, configured to send a downlink control information block DCI carrying power control commands TPC to a terminal, where for each terminal, one CC includes l TPC commands, or one CC includes N TPC commands for each BWP or each activated BWP, where N is the number of closed-loop power controls supported on the BWP.

The embodiment of the invention also provides a base station, which comprises a processor and a memory; the processor is configured to execute a TPC command transmitting program stored in the memory to implement the steps of the TPC command transmitting method according to any one of the above.

Embodiments of the present invention further provide a computer-readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps of the TPC command transmitting method as described in any above.

Compared with the prior art, the invention enables the receiving node to definitely know the power control parameter configuration of the wave beam corresponding to the PHR transmitted by the transmitting node by transmitting the PHR according to the format of the predefined power control parameter indicating the PHR;

furthermore, a predetermined number of power control parameter sets are selected in turn from the M pre-configured power control parameter sets to serve as the power control parameters of the virtual PHR, so that fairness of the power control parameters corresponding to the transmitted PHR is guaranteed.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and are not intended to limit the invention. In the drawings:

Fig. 1 is a flow chart illustrating a power control method according to an embodiment of the invention;

fig. 2 is a schematic structural diagram of a power control apparatus according to an embodiment of the present invention;

fig. 3 is a schematic diagram of PHR triggering and transmitting processes under a first carrier aggregation condition according to an embodiment of the present invention;

fig. 4 is a schematic diagram of PHR triggering and transmitting processes under a second carrier aggregation condition according to an embodiment of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.

In wireless communication systems, transmission power control of transmissions is required in order to reduce power consumption of the transmitting device and to reduce interference to other transmissions caused by unnecessarily high power transmissions. Factors such as the size of the communication range, the maximum transmission power and reception sensitivity of the transceiver devices of both communication parties, the modulation and coding scheme and rate of data, the operating frequency band, and the bandwidth occupied by transmission all affect the transmission power. Generally, it is necessary to use a lower transmission power as much as possible under the condition that the received signal quality requirement of the receiving end is satisfied.

In a general communication technique, a communication node 1 transmits a reference signal, and a communication node 2 measures Path Loss (PL) from the node 1 to the node 2 based on the reference signal. PL is calculated using the difference between the transmission power of the reference signal at node 1 and the reception power of the reference signal received at node 2. Assuming that the PL of the node 2 to node 1 transmission channel is the same as the PL of the node 1 to node 2 transmission channel, the node 2 can calculate the transmission power of the node 2 as the transmitting node to node 1 using the above-mentioned PL. Since PL is a result of unilateral measurement, this factor belongs to the open loop part in the transmission power. The node 1 receives the transmission and then analyzes the transmission, and provides the node 2 with power adjustment information according to the received quality, and the process belongs to closed-loop power control.

In LTE, the base station to terminal link is the downlink and the terminal to base station link is the uplink. The downlink power is determined by the base station based on the channel measurements of each scheduled UE and the scheduling algorithm. The power control of the uplink is an open loop combined with a closed loop. In addition, certain quantities related to transmission, such as transmission rate, Modulation and Coding Scheme (MCS) level, transmission bandwidth, etc., also affect power.

The following is a formula for calculating the transmission power of the Physical Uplink Shared Channel (PUSCH) of LTE, and each parameter affecting the power is described by taking this as an example.

In the above formula, the subscript c refers to a cell, and each Component Carrier (CC) supporting a Carrier Aggregation (CA) function corresponds to one cell. As can be seen from the above equation, each parameter in the power calculation formula is configured/calculated by differentiating the cell. All descriptions herein are described for one CC without specifically specifying the frequency domain range. It should be noted that all parameters in this document can be extended to multiple CCs, and the power-related configuration and calculated parameters only need to be configured for each CC independently.

Power P of uplink transmission PUSCH_PUSCHIs partially determined by a target received power P_{O_PUSCH}The path loss PL and the path loss factor alpha, wherein the target receiving power is divided into cell level and UE level parameters which are determined by the base station and configured to the UE; the closed loop part is that the base station determines the adjustment quantity of closed loop Power Control according to the difference between the measurement result and the target to Transmit a Transmit Power Control Command (TPC Command), that is, a delta for PUSCH in DCI _PUSCH) The UE is informed. UE maintains a local power adjustment quantity f (i), updates according to the transmission power control command, and achieves the purpose of closed-loop power control by adopting the formula. Where i is the subframe number, Δ TF is the MCS-dependent power offset, PCMAX is the maximum power limit of the UE.

The cell level target received power P0_ nominal of LTE is to distinguish PUSCH (semi-static, dynamic, message 3MSG3) from Physical Uplink Control Channel (PUCCH), and corresponds to different Block Error rate (BLER) requirements. The UE level target received power parameter P0_ UE _ specific is also set to distinguish the above items in order to compensate for systematic deviations, such as PL estimation errors, and errors in absolute output power setting.

Updating f (i) according to the transmission power control command is divided into two modes: the cumulative formula and the absolute value formula, wherein the absolute value formula directly uses the transmission power control command sent by the base station to update the local power adjustment amount f (i) of the UE, and the cumulative formula jointly determines the local power adjustment amount f (i) of the UE by the transmission power control command sent by the base station and the historical value of the local power adjustment amount of the UE. Note that f (i) here represents the amount of closed loop power adjustment local to the UE.

Power control in Long Term Evolution (LTE) technology is related to many factors, such as path loss, target received power, maximum transmit power, closed-loop power adjustment, transmission bandwidth, transmission rate, and so on.

The 5G technology introduces a beam transmission mode, and both the base station and the UE support multiple beams. When operating in beam mode, the power calculation needs to take into account the characteristics of the beam. To support the beam mode, the power control parameters are configured in 3 parts: open-loop power control parameters, closed-loop power control parameters, and RS parameters of path loss. Each part supports and configures a plurality of open-loop power control parameters (or a set thereof), namely, the number of the open-loop power control parameters (or the set thereof) can be configured with J at most, and the number of each open-loop power control parameter (or the set thereof) is J; the RS parameters (or the set thereof) of the path loss can be configured with K at most, and the number of the RS parameters (or the set thereof) of each path loss is K; at most, L closed-loop power control parameters (or a set thereof) can be configured, and the number of each closed-loop power control parameter (or the set thereof) is L; wherein J, K and L are positive integers, J is an integer greater than 0 and equal to or less than J, K is an integer greater than 0 and equal to or less than K, L is an integer greater than 0 and equal to or less than L, and J, K, L are all integers greater than 0.

If the UE supports multiple beams (or beam groups), the base station configures an association between each possible beam (or beam group) and an RS parameter of an open-loop power control parameter, a closed-loop power control parameter, a path loss. A beam (or group of beams) may be indicated by a reference signal resource.

The reference signal includes at least one of: uplink Sounding Signal (SRS), Channel State Information Reference Signal (CSI-RS), Secondary Synchronization Block (SSB), Phase Tracking Reference Signal (PTRS), Tracking Reference Signal (TRS), Demodulation Reference Signal (DMRS).

The base station indicates reference signal resources for uplink transmission of the UE, so that the UE obtains power control parameters associated with the reference signal resources.

Examples are as follows:

the base station configures J1 open-loop power control parameters (or a set thereof), K1 path loss RS parameters (or a set thereof), and L1 closed-loop power control parameters (or a set thereof) for the PUSCH transmission of the UE.

The base station configures a PUSCH transmission mode, such as codebook-based transmission (codebook based transmission) or non-codebook-based transmission (non-codebook based transmission), for the UE.

The base station configures an uplink sounding signal resource set (SRS resource set) based on a transmission mode of a PUSCH for the UE, wherein the uplink sounding signal resource set comprises at least one uplink sounding signal resource (SRS resource).

The base station sends Downlink Control Information (DCI) to the UE, where the DCI includes an SRS Resource Indicator (SRI), and the SRI may be used to determine precoding for PUSCH transmission. The set of SRIs indicated in DCI for different PUSCH transmission schemes may be different. For example, the SRI set of codebook-based transmissions may have 2 SRIs, each SRI representing an SRS Resource (Resource); the set of SRIs for non-codebook based transmission may have 15 SRIs, each SRI representing an SRS resource or multiple SRS resources.

The base station configures the UE with the association of each member SRI in the SRI set indicated in the DCI with at least one of the following: open-loop power control parameter (or set thereof) number, RS parameter (or set thereof) number of path loss, and closed-loop power control parameter (or set thereof) number.

And the base station informs the UE of the power control parameter of PUSCH transmission through the SRI in the DCI.

The SRS resource, the SRS resource set and the power control parameter are configured based on at least one of the following frequency domain units: BWP, CC.

When a base station schedules uplink transmission of a UE, many factors including time-frequency resources, transmission rate, modulation and coding scheme, MIMO scheme, etc. need to be determined, and according to the reception quality, the base station needs to determine which factors need to be adjusted in subsequent scheduling, such as increasing the modulation and coding scheme, increasing the transmission power, etc. But the base station does not know the current transmit power of the UE, nor if it can increase it. Therefore, there is a mechanism in LTE, where the UE sends a PHR to the base station to explicitly inform the difference between the required transmit power and the maximum transmit power for the current transmission.

When there is uplink transmission in calculating the PHR, the PHR is the maximum transmit power minus the transmit power required by the actual uplink transmission, and this PHR is called a true PHR. The actual transmit power required for uplink transmission is related to at least one of the following parameters: the transmission device comprises a frequency domain width occupied by transmission, a frequency domain position occupied by transmission, a data rate of transmission, a MCS of transmission, a format of transmission, an open-loop power control part, a closed-loop power control part and a path loss compensation part.

When uplink transmission does not exist during PHR calculation, the PHR is a virtual PHR, and the virtual PHR is an open-loop power control part, a closed-loop power control part and a path loss compensation part which are obtained by subtracting the virtual PHR from the maximum transmission power.

The PHR may be classified into different types according to the transmission type considered for calculating the PHR and the combination of the transmissions. For example, a PHR of type 1 is for PUSCH transmission, a PHR of type 2 is for PUCCH transmission or PUCCH + PUSCH transmission, and a PHR of type 3 is for SRS transmission.

Taking the transmission of the PUSCH as an example, when the UE transmits the PUSCH in the PUSCH transmission period (transmission period) i of the uplink BWP b of the carrier f of the serving cell c, the true PHR of type 1 is calculated as follows:

wherein, P_CMAX，f，c(i)P_{O_PUSCH，b，f，c}(j)

α_b，f，c(j)，PL_b，f，c(q_d)，Δ_{TF，b，f，c}(i) And f_b，f，c(i, l) the subscripts without subscripts b, f, c have similar meaning as the physical quantities of the corresponding symbols of (equation 1) above, and here the subscripts b, f, c are carried to indicate the configuration of the uplink BWP b of the carrier f of the serving cell c corresponding to the physical quantities. Here, i is a PUSCH transmission period, and is slightly different from the subframe number in the above (expression 1), but is used as a time domain unit, and does not hinder understanding of the present invention. j is the index of the open-loop power control parameter set of PUSCH transmission, q_dIs an index of the configuration set of RSs used for PL measurement, and k, l mentioned above is a closed loop power control number.

The virtual PHR is calculated as follows:

wherein,

is the maximum transmit power value under some conditional constraints.

The UE triggers the PHR when the triggering condition is met. The trigger condition includes at least one of: and when the periodic timer of the PHR expires, the detected PL value change threshold exceeds the threshold, and the reporting interval of the PHR is larger than the minimum interval.

After triggering the PHR, the UE sends the PHR when enough resources are available for sending the PHR.

The PHR is calculated by the physical layer after the PHR is triggered and before the PHR is sent. The timing of computing the PHR is determined by at least one of the following conditions: after triggering the PHR, receiving DCI containing uplink grant (UL grant) information, receiving DCI of UL grant information enough to accommodate the PHR, a subframe where uplink transmission containing the PHR is located, and a time slot where uplink transmission containing the PHR is located.

For example, after the PHR trigger condition of the UE is satisfied, if UL grant information enough to accommodate the PHR is received, the PHR is calculated according to the uplink transmission parameters in the UL grant information, and the PHR is sent to the base station in the uplink resource indicated by the UL grant information.

For a carrier aggregation CA or multi BWP scenario, the actual PHR is calculated for the serving cell/BWP in the UL grant that schedules uplink transmission, while the virtual PHR is calculated for the serving cell/BWP in the UL grant that does not schedule uplink transmission.

Suppose that the base station configures K1 RSs of PL for the UE, where the number is K, and the value range of K is 0 to K1-1. The K1 RSs used to estimate PL are referred to as the first set of RSs of PL.

A subset of the set of RSs of the first PL is configured to be associated with the SRI field in the DCI of the PUSCH, referred to as the set of RSs of the second PL. For example, among the K1 configured RSs of PL, K1_1 RSs are associated with SRI in DCI for PUSCH. K1 — 1 ═ K1, both integers.

Alternatively, the set of RSs of the second PL is determined in a predefined manner. For example, when the SRI field is not included in the DCI of the PUSCH, the RS set of the second PL is predefined as the first one, or the first several, of the RS sets of the first PL. For another example, before RRC connection, the UE cannot obtain the UE specific information configured by the base station, so the UE can determine the RS set for PL estimation by itself.

The base station configures L1 closed-loop power controls for the UE, wherein the number is L, and the value range of L is 0-L1-1. The L1 closed-loop power controls are referred to as a first closed-loop power control set.

A subset of the first closed loop power control set is configured to be associated with an SRI in DCI of a PUSCH, and is referred to as a second closed loop power control set. For example, of the L1 configured closed-loop power controls, L1_1 closed-loop power controls are associated with the SRI in the DCI of the PUSCH. L1 — 1 ═ L1, both integers.

Or, determining the second closed-loop power control set in a predefined manner. For example, when the SRI field is not included in the DCI of the PUSCH, the second closed loop power control set is predefined as the first one of the first closed loop power control sets, or several previous ones.

K and l associated to the same SRI are indirectly associated. Indirectly associated k and l may also be referred to as k and l being associated.

The RS set of the second PL determined in the predefined way is associated with the second closed loop power control set determined in the predefined way.

The base station configures J1 open-loop power control parameter sets for the UE, wherein the number of the open-loop power control parameter sets is J, and the value range of the J is 0-J1-1. The J1 sets of open-loop power control parameters are referred to as a first set of open-loop power control parameters.

A subset of the first set of open-loop power control parameters is configured to be associated with an SRI in the DCI of the PUSCH, which is referred to as the second set of open-loop power control parameters. For example, of the J1 configured open-loop power control parameter sets, J1_1 open-loop power control parameter sets are associated with SRIs in DCI of PUSCH. J1 — 1 ═ J1, both integers.

Or, determining the second open-loop power control parameter set in a predefined manner. For example, when the SRI field is not included in the DCI of the PUSCH, the second set of open-loop power control parameters is predefined as the first one, or the first several, of the first set of open-loop power control parameters.

As shown in fig. 1, a power headroom reporting method according to an embodiment of the present invention includes:

step 101: when the triggering condition of a Power Headroom Report (PHR) is met, determining parameters of the PHR and a PHR value, wherein the parameters of the PHR comprise power control parameters of the PHR;

In this embodiment, the triggering condition of the PHR includes any one of:

in a Reference Signal (RS) set, the variation of the Path Loss (PL) of any one RS exceeds a preset first threshold value;

in a set of RSs, the PL variation of at least a first predetermined number of the RSs exceeds a predetermined second threshold;

in one RS set, the sum of the PL variable quantities of a second preset number of the RSs exceeds a preset third threshold value;

in an RS set, the average value or weighted average value of PL variable quantities of a second preset number of RSs exceeds a preset third threshold value;

in one RS set, at least a third preset number of set members are changed;

in a set of RSs, more than a predetermined percentage of set members change;

the one RS set refers to a reference signal RS set of path loss PL or a subset of the reference signal RS set of path loss PL satisfying a predetermined condition.

Further, the triggering condition of the PHR further includes one of: adding BWP, updating BWP packet, BWP switching. Wherein the BWP handoff comprises one of: the DCI indicates BWP switching and BWP switching triggered by timer timeout.

Further, the triggering condition of the PHR further includes: the longest non-reporting PHR period timer expires.

In this embodiment, the RS of the PL in the power control parameters of the SRS resource set is a part of the RS set for measuring the PL.

In this embodiment, for one CC or BWP, the set of RSs measuring PL is determined by at least one of the following parameters:

power control parameters of the PUSCH;

power control parameters of the PUCCH;

and power control parameters of the SRS.

In this embodiment, the predetermined condition includes at least one of:

RS whose PL value is less than or equal to a predetermined fourth threshold value;

a smallest fourth predetermined number of RSs corresponding to PL;

RS at a predetermined position.

It should be noted that the RSs in the predetermined position include the 1 st RS in the one RS set, or the 2 nd RS in the one RS set, or other RSs with predetermined numbers in the one RS set, or the first several RSs in the one RS set.

In this embodiment, the parameters of the PHR further include:

the power control parameter and the correlation information of the reference signal information;

the reference signal information includes at least one of:

at least one reference signal or reference signal index, at least one reference signal resource or reference signal resource index, at least one spatial relationship information or spatial relationship information index, at least one reference signal resource grouping or reference signal resource grouping index, at least one reference signal resource combination or reference signal resource combination index.

It should be noted that the reference signal may be an uplink reference signal, or a downlink reference signal, or a DMRS, PTRS, TRS. The uplink reference signal includes: and the downlink reference signal comprises CSI-RS and SSB.

In this embodiment, the predetermined condition further includes at least one of:

an RS determined by the reference signal information;

and RS determined by the index of the associated information.

It should be noted that the base station configures a full RS set, and additionally configures reference signal information (SRI) or a mapping index (mapping index), obtains a correlation with the power control parameter through the correlation, and further determines the RS information of the PL in the corresponding power control parameter.

In this embodiment, the parameters of the PHR further include:

the PHR is a real PHR or a virtual PHR.

Further, the method for determining that the PHR is a real PHR or a virtual PHR further includes:

and if uplink authorization information aiming at the CC or the BWP which is not indicated by the uplink authorization information is received within a predefined time or time period, the PHR on the CC or the BWP which is not indicated by the uplink authorization information is a real PHR.

In this embodiment, the method for determining that the PHR is a real PHR or a virtual PHR includes:

After the triggering condition of the PHR is satisfied, if a first uplink grant message is received, where the uplink grant message is used to indicate that there is uplink transmission resource on a CC or a bandwidth portion BWP of a certain component carrier, the PHR on the CC or the BWP indicated by the uplink grant message is a real PHR.

and if the uplink authorization information for the CC or BWP not indicated by the uplink authorization information is not received within a predefined time or time period, the PHR on the CC or BWP not indicated by the uplink authorization information is a virtual PHR.

In this embodiment, the method for determining that the PHR is a real PHR or a virtual PHR further includes:

within a predefined time or time period, if PDCCH information of a physical downlink control channel for a CC or a BWP that is not indicated by the uplink grant information is received and the received first PDCCH information includes its own uplink grant information, the PHR on the CC or the BWP that is not indicated by the uplink grant information is a real PHR.

Within a predefined time or time period, if PDCCH information for the CC or BWP not indicated by the uplink grant information is not received, or PDCCH information for the CC or BWP not indicated by the uplink grant information is received but there is no uplink grant information for the PHR on all the received PDCCH information, the PHR on the CC or BWP not indicated by the uplink grant information is a virtual PHR.

within a predefined time or time period, if PDCCH information for a CC or a BWP that is not indicated by the uplink grant information is received but the first received PDCCH information does not include uplink grant information for itself, the PHR on the CC or the BWP that is not indicated by the uplink grant information is a virtual PHR.

In this embodiment, the predefined time or the predefined time period is determined by at least one of:

a time at which a trigger condition of the PHR is satisfied;

the time of receiving the uplink authorization information;

the received uplink authorization information indicates the transmission time;

the transmission time of the PHR;

PHR triggering time to PHR sending time;

When receiving the first uplink authorization information;

before the scheduling information from the first uplink authorization information to the uplink authorization information is effective.

Further, the uplink grant information includes at least one of:

new transmitted uplink grant information;

first uplink grant information;

the first newly transmitted uplink grant information.

It should be noted that the uplink grant information is sent to the UE itself. The new transmission is relative to the retransmission.

In this embodiment, the method for determining the power control parameter includes at least one of:

determining the power control parameter of the real PHR according to the power control parameter of uplink transmission scheduled by uplink authorization information, wherein the uplink authorization information is used for judging whether the PHR is a real PHR or a virtual PHR;

selecting a fifth preset number of power control parameter sets from M preset power control parameter sets as the power control parameters of the virtual PHR, wherein M is an integer greater than or equal to 1, and the fifth preset number is a natural number between 1 and M.

In this embodiment, the selecting a fifth predetermined number of power control parameter sets from the M preconfigured power control parameter sets includes at least one of:

Selecting a fifth preset number of power control parameters in the M power control parameters in turn according to a cycle sequence;

selecting a fifth preset number of power control parameters in the M power control parameters according to the reported time;

and selecting a fifth preset number of power control parameters in the M power control parameters according to the priority.

In this embodiment, the method for determining the priority includes at least one of:

the smaller the power margin value is, the higher the priority is;

the greater the PL change, the higher the priority;

the longer the interval with the last sending time of the PHR is, the higher the priority is;

when the PHR is triggered due to the PL change, the priority of the power control parameter of the RS corresponding to the changed PL is the highest.

Step 102: the PHR is transmitted in a predefined PHR format.

In this embodiment, the format of the predefined PHR includes any one of:

determining a power control parameter of the PHR in a predefined manner, the predefined manner comprising: PHR power control parameters of the real PHR are determined by the uplink authorization information; the PHR power control parameter of the virtual PHR is determined by the sending time and/or the sending times;

including reference signal information for indicating a power control parameter of the PHR;

An index including the association information, for indicating a power control parameter of the PHR;

the power control parameter set comprises numbers of M preconfigured power control parameter sets, and is used for indicating the power control parameters of the PHR, wherein M is an integer greater than or equal to 1;

a number of power control parameters including the PHR, for indicating the power control parameters of the PHR.

In this embodiment, the predefined manner for determining the power control parameter of the PHR further includes at least one of the following manners:

power control parameters of the PHR corresponding to the reference signal information of a predefined index;

and pre-defining the power control parameter of the PHR corresponding to the associated information index of the index.

In this embodiment, the base station and the terminal determine one of the following manners in advance, or configure one of the following manners through the base station:

mode 1:

in the format of the predefined PHR, information for determining power control parameters of the PHR is contained for a real PHR;

the predefined PHR has a format in which information for determining a power control parameter of the PHR is not included for a virtual PHR.

Alternatively, the mode 2:

the predefined PHR format includes information for determining power control parameters of the PHR for both real and virtual PHR.

Alternatively, mode 3:

the predefined PHR has a format in which information for determining power control parameters of the PHR is not included for both a real PHR and a virtual PHR.

Alternatively, the mode 4:

the format of the predefined PHR does not include information for determining power control parameters of the PHR for a real PHR.

The predefined PHR format includes information for determining power control parameters of the PHR for a virtual PHR.

It should be noted that the information for determining the power control parameter of the PHR includes information of at least one of:

a cycle sequence for selecting a fifth predetermined number of the M power control parameters in turn;

a reporting time for selecting a fifth predetermined number of power control parameters from the M power control parameters;

for selecting a priority of a fifth predetermined number of the M power control parameters.

Further, the format of the predefined PHR may further include any one of:

each CC comprises at least one PHR, and each PHR corresponds to one BWP or BWP group; or,

each CC comprises at least one PHR, and each PHR corresponds to a group of power control parameters; or,

Each BWP or BWP packet includes at least one PHR, with each PHR corresponding to a set of power control parameters.

Further, the format of the predefined PHR may further include any one of:

when the SRS resource set is configured to be independent of PUSCH closed-loop power control on a certain CC or BWP and PUSCH transmission is configured on the CC or BWP, PHR of type 1 and type 3 exist on the CC or BWP at the same time.

When the SRS resource set is configured to be independent of PUSCH closed-loop power control on a certain CC or BWP, and PUSCH transmission is not configured on the CC or BWP, only PHR of type 3 is located on the CC or BWP.

On a certain CC or BWP, when the SRS resource set is configured to share closed loop power control with PUSCH, there is only PHR of type 1.

Further, the format of the predefined PHR further includes:

the number of PHRs of the same type for each CC for each configured/activated BWP is determined by at least one of the number of RSs of PL and the number of closed loop power controls.

Further, the base station configures or determines groups of BWPs or CCs in a predefined manner, and shares the same type of PHR within each group.

Further, an RS set for one PL, wherein an RS number k of the PL has a correlation with a closed-loop power control l.

Further, the format of the predefined PHR further includes one of:

reporting a PHR according to the number k of the RS of each PL.

Reporting one PHR for each l.

Reporting a PHR for l associated with the number k of the RS of each PL.

One PHR is reported for each combination of k and l associated with k.

And reporting a preset number of PHRs for each CC/BWP/BWP group.

Further, when the PHR is triggered by a change in PL, the transmitted PHR includes a PHR of an RS corresponding to the changed PL.

Further, when the PHR is triggered by a change of PL, the PHR on the CC or BWP where the PHR trigger event occurs includes the PHR of the RS corresponding to the changed PL.

Note that the PHR including the RS corresponding to the changed PL means: a PHR including the corresponding RS, or a PHR determined to include the corresponding RS as one of the members. The latter means that the reported PHR is a comprehensive value, and when the RS parameter of PL in the power control parameters of the PHR is determined, the RS related to the PL change of the PHR triggered by the PL change is also included.

Further, the power control parameter includes at least one of:

open-loop power control parameters, closed-loop power control parameters, and RS parameters of PL.

Embodiments of the present invention also provide a computer readable storage medium storing one or more programs, which are executable by one or more processors to implement the steps of the power headroom reporting method according to any of the above.

As shown in fig. 2, a power headroom reporting apparatus according to an embodiment of the present invention includes a determining unit 201 and a transmitting unit 202, wherein:

a determining unit 201, configured to determine a parameter of a power headroom report, PHR, and a PHR value after a trigger condition of the PHR is satisfied, where the parameter of the PHR includes a power control parameter of the PHR;

a sending unit 202, configured to send the PHR according to a predefined PHR format.

In this embodiment, the triggering condition of the PHR includes any one of the following:

in a set of RSs, the PL variation of at least a first preset number of the RSs exceeds a preset second threshold value;

in an RS set, the sum of the PL variation of a second preset number of the RSs exceeds a preset third threshold value;

in an RS set, the average value or weighted average value of the PL variation of a second preset number of the RSs exceeds a preset third threshold value;

In one RS set, at least a third preset number of set members are changed;

in a set of RSs, more than a predetermined percentage of set members change;

Further, the trigger condition of the PHR further includes one of: adding BWP, updating BWP grouping and switching BWP. Wherein the BWP handover comprises one of: the DCI indicates BWP handover, timer timeout triggered BWP handover.

power control parameters of the PUSCH;

power control parameters of the PUCCH;

power control parameters of the SRS.

In this embodiment, the predetermined condition includes at least one of:

RS with PL value less than or equal to a predetermined fourth threshold value;

a smallest fourth predetermined number of RSs corresponding to PL;

RS at a predetermined position.

It should be noted that the RS at the predetermined position includes the 1 st RS in the one RS set, or the 2 nd RS in the one RS set, or the first several RSs in the one RS set.

In this embodiment, the parameters of the PHR further include:

the power control parameter is associated with the reference signal information;

the reference signal information includes at least one of:

It should be noted that the reference signal may be an uplink reference signal, or a downlink reference signal, or a DMRS, PTRS, TRS. The uplink reference signal includes: and SRS, wherein the downlink reference signal comprises CSI-RS and SSB.

an RS determined by the reference signal information;

and RS determined by the index of the associated information.

In this embodiment, the parameters of the PHR further include:

the PHR is a real PHR or a virtual PHR.

In this embodiment, the determining unit 201 determines that the PHR is a real PHR or a virtual PHR, and further includes:

In this embodiment, the method for determining, by the determining unit 201, that the PHR is a real PHR or a virtual PHR includes:

after the triggering condition of the PHR is satisfied, if a first uplink grant message for itself is received, where the uplink grant message is used to indicate that there is an uplink transmission resource on a certain component carrier CC or bandwidth part BWP, the PHR on the CC or BWP indicated by the uplink grant message is a real PHR.

In this embodiment, the method for determining, by the determining unit 201, that the PHR is a real PHR or a virtual PHR further includes:

and if Physical Downlink Control Channel (PDCCH) information of the CC or the BWP which is not indicated by the uplink authorization information is received within a predefined time or a predefined time period, and the received first PDCCH information contains the uplink authorization information of the PDCCH, the PHR on the CC or the BWP which is not indicated by the uplink authorization information is a real PHR.

within a predefined time or time period, if PDCCH information for a CC or BWP that is not indicated by the uplink grant information is not received, or PDCCH information for a CC or BWP that is not indicated by the uplink grant information is received but there is no uplink grant information for the PDCCH information received in all the PDCCH information, the PHR on the CC or BWP that is not indicated by the uplink grant information is a virtual PHR.

within a predefined time or time period, if PDCCH information for a CC or BWP that is not indicated by the uplink grant information is received but the first received PDCCH information does not include uplink grant information for the first PDCCH, the PHR on the CC or BWP that is not indicated by the uplink grant information is a virtual PHR.

time when the trigger condition of the PHR is satisfied;

the time of receiving the first uplink authorization information;

the received first uplink authorization information indicates the transmission time of the transmission;

the transmission time of the PHR;

the PHR triggering time reaches the PHR sending time; (ii) a

When receiving the first uplink authorization information;

In this embodiment, the method for determining the power control parameter by the determining unit 201 includes at least one of:

determining the power control parameter of the real PHR according to the uplink transmission parameter scheduled by the corresponding uplink authorization information;

Selecting a fifth predetermined number of power control parameter sets from M preconfigured power control parameter sets as the power control parameters of the virtual PHR, wherein M is an integer greater than or equal to 1.

In this embodiment, the determining unit 201 selects a fifth predetermined number of power control parameter sets from the M preconfigured power control parameter sets, where the fifth predetermined number of power control parameter sets includes at least one of the following:

In this embodiment, the method for determining the priority of the determining unit 201 includes at least one of:

the smaller the power margin value is, the higher the priority is;

the greater the PL change, the higher the priority;

when the PHR is triggered due to PL change, the priority of the power control parameter of the RS corresponding to the changed PL is the highest.

In this embodiment, the predefined PHR format of the sending unit 202 includes any one of the following:

Determining power control parameters of the PHR in a predefined manner, the predefined manner including: PHR power control parameters of the real PHR are determined by the uplink authorization information; the PHR power control parameter of the virtual PHR is determined by the sending time and/or the sending times;

an index including the association information for indicating a power control parameter of the PHR;

a number comprising M preconfigured sets of power control parameters for indicating power control parameters of the PHR, wherein M is an integer greater than or equal to 1;

a number of the power control parameter of the PHR is included to indicate the power control parameter of the PHR.

pre-defining power control parameters of the PHR corresponding to the indexed reference signal information;

and the association information of the predefined index indexes the corresponding power control parameters of the PHR.

Mode 1:

the format of the predefined PHR includes information for determining power control parameters of the PHR for a real PHR;

Alternatively, the mode 2:

Alternatively, mode 3:

the predefined PHR format does not include information for determining power control parameters of the PHR for both real and virtual PHRs.

Alternatively, mode 4:

Further, the format of the predefined PHR of the sending unit 202 further includes any one of the following:

Further, the format of the predefined PHR may further include any one of:

When the SRS resource set is configured to be independent of PUSCH closed-loop power control on a certain CC or BWP, and no PUSCH transmission is configured on the CC or BWP, only the PHR of type 3 is on the CC or BWP.

On a certain CC or BWP, when the SRS resource set is configured to share closed loop power control with PUSCH, only PHR of type 1 is available.

Further, the format of the predefined PHR further includes:

Further, the format of the predefined PHR further includes one of:

reporting a PHR according to the number k of the RS of each PL.

Reporting one PHR for each l.

Reporting a PHR according to l associated with the number k of the RS of each PL.

One PHR is reported for each combination of k and l associated with k.

And reporting a preset number of PHRs by each CC/BWP/BWP group.

Further, when the PHR is triggered by a change in PL, the PHR transmitted by the transmitting unit 202 includes a PHR of an RS corresponding to the changed PL.

Further, when the PHR is triggered by a change in PL, the PHR on the CC or the BWP, where the PHR trigger event sent by the sending unit 202 occurs, includes the PHR of the RS corresponding to the changed PL.

Further, the power control parameter includes at least one of:

The embodiment of the invention also discloses a power headroom reporting method, which comprises the following steps:

the base station informs the terminal of the configuration parameters of the power headroom report PHR,

the configuration parameters of the PHR include at least one of:

reporting a PHR according to the number l of the closed-loop power control parameter associated with the number k of each PL RS;

and reporting a preset number of PHRs for each CC, BWP or BWP group.

the base station informs the terminal of at least one set of power control parameters for determining the PHR, wherein the power control parameters comprise the serial number j of an open-loop power control parameter, the serial number k of a path loss RS parameter and the serial number l of a closed-loop power control parameter.

The embodiment of the invention also provides a base station, which comprises a processor and a memory; the processor is configured to execute a power headroom reporting program stored in the memory to implement the steps of the power headroom reporting method as described in any of the above.

An embodiment of the present invention further provides a power headroom reporting apparatus, where the power headroom reporting apparatus includes a first notification unit, where:

a first notification unit for notifying a terminal of configuration parameters of a power headroom report, PHR,

the configuration parameters of the PHR include at least one of:

and reporting a preset number of PHRs for each CC, BWP or BWP group.

An embodiment of the present invention further provides a power headroom reporting apparatus, where the power headroom reporting apparatus includes a second notification unit, where:

and the second notification unit is used for notifying the terminal of at least one set of power control parameters for determining the PHR, wherein the power control parameters comprise the serial number j of the open-loop power control parameter, the serial number k of the RS parameter of the path loss and the serial number l of the closed-loop power control parameter.

The embodiment of the invention also discloses a TPC command sending method, which comprises the following steps:

The embodiment of the invention also discloses a TPC command sending device, which comprises a first sending unit, wherein:

The embodiment of the invention also discloses a TPC command sending device, which comprises a second sending unit, wherein:

Preferred embodiment 1

The UE determines the set of RSs measuring the PL according to the base station configuration information or according to a predefined manner.

The RS set may be any one of:

a) a set of RSs of a first PL;

b) a set of RSs of a second PL;

c) An RS in a set of RSs of a second PL associated with a second closed loop power control set;

d) an RS in a first set of RSs associated with a specified closed loop power control. E.g., RS in the first set of RSs associated with closed-loop power control of 1.

e) An RS in a set of RSs of a second PL associated with a specified closed loop power control. E.g., an RS in the RS set of the second PL associated with closed loop power control of l ═ 1.

The association with the closed-loop power control set refers to association with each closed-loop power control in the closed-loop power control set.

For example, the first closed-loop power control set includes two closed-loop power controls, and the closed-loop power control numbers are: l is 0 and l is 1. The RS set of the first PL includes 3 RSs, numbered: k is 0, k is 1, and k is 2. The association relationship between SRI and l and k includes: SRI 0 is associated with l ═ 0, SRI 0 is associated with k ═ 0; SRI1 is associated with l ═ 1 and SRI1 is associated with k ═ 1. The RS set of the second PL includes 2 RSs, numbered: k is 0, k is 1; the second closed-loop power control set comprises two closed-loop power controls, and the closed-loop power control numbers are respectively: l is 0 and l is 1.

The RS in the RS set of the second PL associated with the second closed-loop power control set refers to an RS in the RS set of the second PL having a relationship with any one closed-loop power control in the second closed-loop power control set, that is: k is 0 and k is 1. The closed-loop power control is related to the RS of the PL, namely that the closed-loop power control and the RS of the PL are related to the same SRI.

The UE measures PL of the set of RSs, and triggers PHR when at least one of the following conditions is met:

and 1, the PL variable quantity corresponding to any RS in the RS set exceeds a preset threshold.

And (2) PL variable quantity corresponding to at least a preset number of RSs in the RS set exceeds a preset threshold.

And 3, the sum of the PL variable quantities corresponding to a predetermined number of RSs in the RS set exceeds a predetermined threshold.

The sum of the amount of change in PL for all RSs in the set of RSs exceeds a predetermined threshold.

And 5, in the RS set, PL variation corresponding to the RS subsets meeting the preset condition exceeds a preset threshold. Including at least one of:

6. the PL change amount of any one RS in the RS subsets satisfying the predetermined condition exceeds a threshold.

7. In the RS subsets meeting the preset condition, the PL variation of at least a preset number of RSs exceeds a threshold.

8. And in the RS subsets meeting the preset conditions, the sum of the PL variation of a preset number of RSs exceeds a preset threshold.

And 9, in the RS set, the members of the RS subsets meeting the preset conditions are subjected to predefined changes.

A predefined change in members of a set means that at least a specified number of members have changed.

A predefined change in members of a set may also refer to a change in members that exceeds a predetermined percentage.

The predefined change in the members of the set includes at least one of: the new RS meets the condition to enter the set; exiting the set when the existing RS does not meet the condition; the new RS satisfies the condition entry set to replace the old RS.

The change of the RS subset members meeting the predetermined condition means that the RS subset meeting the predefined condition at the current time changes relative to the RS subset meeting the predetermined condition at the time of reporting the PHR last time.

The above RS subset satisfying the predetermined condition refers to a set of RSs satisfying at least one of the following conditions among the RS sets:

RS with PL value less than (<) a predetermined threshold one;

RS with PL value less than or equal to (<) a predetermined threshold one;

a predetermined number of RSs with the smallest PL. For example, the minimum N RSs in the set of RSs. N is a predetermined value and is an integer greater than or equal to 1. (it should be noted that the predetermined number of RSs with the smallest PL in the present invention refers to the RSs with the predetermined number of PLs arranged in the front of the PLs from small to large, or the RSs with the predetermined number of PLs arranged in the back of the PLs from large to small);

RS of a predetermined position in the set of RSs. For example, the designated location is the first RS in the set of RSs. As another example, the designated locations are the first and second RSs in the set of RSs.

The above conditions may be used in combination. For example, in the combination of the condition 1 and the condition 3, of the RS sets, 3 RSs satisfying the PL value smaller than the predetermined threshold one constitute an RS subset. When the number of RSs satisfying the PL value less than the predetermined threshold one is less than 3, the RS subset cannot reach 3.

The above predetermined thresholds are not necessarily the same.

The change in PL of the RS is a change amount of the PL value of the RS with respect to the time when the PHR was reported last time.

The PL change of RS is divided into positive and negative values. For example, when calculating the sum of the PL changes of multiple RSs, a positive change in one RS will cancel a negative change in another RS.

When the above conditions are satisfied, the range of the triggered PHR includes one of:

1. the RS-related PHR satisfying the condition is triggered. For example, the PHR associated with the RS whose PL change exceeds a predetermined threshold, or the PHR associated with all RS in a subset of RSs whose sum of PL changes exceeds a predetermined threshold. As another example, the PHR associated with all RS members of the RS subset with predefined changes to the RS subset.

2. All the PHR are triggered. For example, regardless of which of the above conditions triggers a PHR, the PHR of the corresponding CC/BWP is triggered.

Reporting a PHR of a CC by UE (user equipment) by adopting one of the following modes:

1. one PHR is reported per BWP or per BWP packet.

2. More than 1 PHR may be reported per BPW or per BWP packet.

Each PHR is a PHR of a specific power control parameter { j, k, l }, or an integrated value of the PHR corresponding to a plurality of different power control parameters.

The conditions for triggering the PHR may further include: the configuration of the BWP changes.

The base station reconfigures BWP for the UE, and comprises at least one of the following steps:

1. increasing BWP.

2. The BWP is updated. Such as reconfiguring frequency or time domain parameters of an existing BWP. As another example, updating the power control related information of the existing BWP includes reconfiguring at least one of the following parameters: open-loop power control parameters, closed-loop power control parameters, RS parameters for estimating PL, and the association of the above parameters with SRI.

3. Updating the BWP packet. For example, a CC originally has 2 BWPs, and belongs to two BWP packets, and after updating, the two BWPs belong to the same BWP packet.

The conditions for triggering the PHR may further include: and setting the longest unreported PHR period, and maintaining the timer of the longest unreported PHR period for the configuration parameters of each PHR by the UE. After reporting the PHR corresponding to each configuration, the longest non-reporting PHR timer corresponding to the configuration parameter is reset. And triggering the reporting of the PHR corresponding to the configuration when the timer of each longest non-reporting PHR period expires, namely triggering the PHR and triggering at least a PHR reporting event corresponding to the configuration.

For example, the base station configures 2 parameters reported by the PHR for the UE, and the parameters respectively correspond to two closed-loop power control processes l. And the UE sets two timers with the longest unreported PHR period for the two PHRs, and maintains the corresponding timers according to the reporting condition of the PHR corresponding to each closed-loop power control process l. When the PHR corresponding to l ═ 0 is reported, the timer is reset. When the timer of l-1 expires, the PHR is triggered, at least reporting of the PHR corresponding to l-1 is triggered.

The above description is for PUSCH transmission, and its beam related description employs SRI indirect indication in DCI of PUSCH. The SRI may also be replaced by other beam related concepts. For example, downlink RS, SSB, DMRS, etc.

When the above description is used for PUCCH transmission, the concept of beam correlation may be spatial relationship information, or RS indication. I.e., the SRI in the DCI of the PUSCH is replaced by the spatial relationship information indicated in the RRC signaling and/or MAC CE.

Determining, at least in part, a set of RSs for measuring PL using power control parameters of SRS, including at least one of:

the RS of the PL in the power control parameters of the SRS resource set is part of a set of RSs that measure the PL. For example, when the SRS resource set is configured to be independent of PUSCH closed loop power control, the RS of the PL in the power control parameters of the SRS resource set is part of the set of RSs that measure the PL.

For a CC or BWP, at least one of the following parameters determines the set of RSs measuring PL:

power control parameters of the PUSCH;

power control parameters of the PUCCH;

power control parameters of the SRS.

Preferred embodiment 2

In CA of LTE, PHR of a plurality of CCs are independently determined and carried in one MAC PDU. MAC PDUs of PHR of a plurality of CCs are transmitted on one UL CC in CA.

The next generation technology supports BWP configuration in each CC. One or more BWPs may be configured per serving cell and may be activated simultaneously. When BWPs are configured, power control parameters are configured on each BWP independently. When there is no BWP configuration, each CC independently configures power control parameters.

The power control parameters include at least one of: open-loop power control parameters, RS configuration parameters of PL, and closed-loop power control parameters. The base station configures the association of the power control parameters and the SRI, and indicates the transmitted power control parameters through the SRI. Or the base station configures the association between the power control parameters and the spatial relationship, and indicates the transmitted power control parameters through the spatial relationship. Or the base station configures the association between the power control parameters and the SRS resource set, and determines the power control parameters of SRS transmission through the SRS resource set. Or the power control parameters comprise: and determining open-loop power control parameters and/or RS configuration parameters and/or closed-loop power control parameters of PL used by transmission in a predefined mode.

The types and the number of PHRs of each CC include at least one of the following:

each CC contains at most 1 PHR of the same type;

each CC contains at most 1 PHR of the same type for each configured/activated BWP;

each CC contains at most 1 PHR of type 1 and/or type 3;

each CC contains only at most 1 PHR of type 1 and/or type 3 for each configured/activated BWP;

primary cell (PCell) contains one PHR of type 2;

PCell or PUCCH secondary cell (SCell) contains one PHR of type 2.

The above BWP may refer to only the BWP transmitting upstream.

The above BWP may also refer to a BWP allowed for uplink and downlink transmission.

The above may be combined. For example:

each CC contains at most 1 type 1 and/or 1 type 3 PHR, a primary cell (PCell) contains one type 2 PHR, and a PCell or PUCCH secondary cell (SCell) contains one type 2 PHR.

When the SRS resource set is configured to be independent of PUSCH closed-loop power control on a certain CC or BWP, PHR of type 1 and type 3 may exist simultaneously on the CC or BWP.

Herein, where the type of PHR is not particularly mentioned, it means PHR type 1, and the number of PHR is also calculated according to only PHR of type 1. If both

types

1 and 3 exist for the above PHR, the actual PHR number is also calculated as type 3. If a type 2 PHR exists for some CCs or BWPs, the actual number of PHR on the corresponding CCs or BWPs also needs to be considered for type 2.

At least 1 set of power control parameters configured on the BWP is considered, and different closed-loop power control and RS configurations of different PLs may have the requirement of reporting PHR independently.

The number of the PHR of the same type for each configured/activated BWP of each CC is determined by at least one of the number of RSs of the PL and the number of closed-loop power controls, and specifically includes one of the following:

a. number of RSs in set of RSs equal to first PL

b. Number of closed loop power controls equal to first closed loop power control set

c. Number of RSs in set of RSs equal to second PL

d. Number of closed loop power controls equal to second closed loop power control set

e. Number of RSs in set of RSs equal to third PL

f. And the number of the closed-loop power control groups in the first closed-loop power control set or the second closed-loop power control set is equal to that of the closed-loop power control groups in the first closed-loop power control set or the second closed-loop power control set.

More than 1 closed-loop power control which can be transmitted simultaneously belong to the same closed-loop group. For example, if multiple closed-loop power controls are configured for simultaneous transmission of a transmission, then these simultaneously transmitted closed-loop power controls form a closed-loop power control packet. All closed-loop power controls in one closed-loop power control group share the PHR. The PHR of the closed-loop power control packet is the difference between the sum of the required power of the transmissions of the closed-loop corresponding to a plurality l and the maximum transmit power.

g. And the combined number of the RS set which is equal to the second PL with the correlation relation and the closed loop power control number of the second closed loop power control set.

Herein, the PHR of the same type refers to any one of type 1, type 2, and type 3, and each type includes a real PHR or a virtual PHR.

The real PHR is used when there is an actual transmission on the corresponding CC/BWP, otherwise the virtual PHR is used.

Preferred embodiment 3

In next generation technologies, each CC may be configured with more than 1 BWP. When multiple BWPs are activated simultaneously or different BWPs are used alternately, the PHR of multiple BWPs need to be reported. In practice, BWPs in close frequency domains are likely to have similar beam characteristics. And multiple BWPs with similar beam characteristics are configured, mainly to obtain different frequency diversity gains. Therefore, it is necessary to support PHR sharing between BWPs. Similarly, the PHR may also be shared among CCs.

Sharing of PHRs of more than 1 BWP, or more than 1 CC, is achieved by:

the base station configures or determines in a predefined manner the grouping of BWPs or CCs, each sharing the same type of PHR. Wherein determining the grouping of BWPs or CCs in a predefined manner comprises at least one of:

1. the CCs with the frequency domain span not exceeding a predefined threshold belong to the same CC group;

2. BWPs with the frequency domain span not exceeding a predefined threshold belong to the same BWP group;

3. the BWPs adjacent to each other in the frequency domain belong to the same BWP group;

4. The BWPs whose frequency domains are adjacent and whose span does not exceed a predefined threshold belong to the same BWP group;

the PHRs of the same type are shared in each group, and the PHRs comprise at least one of the following characteristics:

1. power control parameters are configured for each BWP or CC grouping.

2. Each group of BWPs or CCs contains one PHR of the same type.

The PHR of the same type corresponds to a real PHR or a virtual PHR on a BWP of a specific { j, k, l } power control parameter, or is a comprehensive value of more than 1 PHR.

Wherein more than 1 PHR may be one of:

PHR values of a plurality of { j, k, l } power control parameters on a BWP;

PHR values of the same { j, k, l } power control parameters on more than 1 BWP;

the integrated value of PHR over more than 1 BWP.

The manner of obtaining one integrated PHR from a plurality of PHR may be one of: and taking an average and taking a weighted average.

The manner of obtaining one integrated PHR from a plurality of PHR may also be the following manner: an average or a weighted average of the PHR satisfying a predetermined condition is taken among the plurality of PHR.

The predetermined condition may be that PL is less than or equal to a predefined threshold or a preconfigured threshold.

The manner of obtaining one integrated PHR from a plurality of PHR may also be the following manner: the sum of the corresponding required powers of the plurality of PHRs is subtracted from the maximum transmit power.

A plurality of real PHRs are used to obtain a comprehensive real PHR.

A comprehensive virtual PHR is obtained by using a plurality of virtual PHRs.

A hybrid PHR is obtained using the virtual PHR and the real PHR. Where the PHR is mixed, a flag different from the virtual and real PHR is used so that the base station can recognize that the PHR is obtained by the real PHR and the virtual PHR.

3. Each closed loop power control of each BWP or CC group contains at most one PHR of the same type

4. The number of PHRs of the same type contained in each BWP or CC group is equal to the number of RSs in the RS set of the first PL in the group

5. The number of PHRs of the same type contained in each BWP or CC group is equal to the number of RSs in the RS set of the second PL in the group

6. The number of PHRs of the same type contained in each BWP or CC group is equal to the number of closed-loop power controls of the first closed-loop power control set in the group

7. The number of PHRs of the same type contained in each BWP or CC group is equal to the number of closed-loop power controls of a second closed-loop power control set in the group

8. The number of the same type of PHR contained per BWP or CC packet is determined by the following method: and the combined number of the RS set which is equal to the second PL with the association relation and the closed loop power control number of the second closed loop power control set.

9. The number of the same type of PHR contained per BWP or CC packet is determined by the following method: equal to the number of closed-loop power control groups in the first closed-loop power control set or the second closed-loop power control set.

10. More than 1 closed-loop power control which can be transmitted simultaneously belong to the same closed-loop group.

Preferred embodiment 4

And the UE monitors the RS to obtain the corresponding PL. When the condition of PHR trigger is satisfied, the reporting process of PHR is as follows:

the power control parameters are based on BWP configuration, and the PHR trigger is also based on BWP. Or,

the power control parameters are configured based on BWP packets, then the triggering of PHR is also based on BWP packets. Or,

the power control parameters are based on BWP configuration, and the triggering of PHR may be based on BWP packets.

The BWP packet is pre-configured by the base station. Each BWP packet includes at least one BWP.

For the case where the PL change satisfies the PHR trigger condition, it is assumed that the RS set that results in the PHR trigger condition being satisfied is set as the RS set of the third PL. For example, when the PL change of one RS results in the PHR trigger condition being satisfied, the RS set of the third PL includes the number k of the RS. As another example, when a PL change of more than 1 RS results in the PHR trigger condition being satisfied, then the RS set of the third PL contains the number of the more than 1 RS.

There are also possibilities for: the PL change of the partial RSs meets a PHR triggering condition, and the PHR related to the first PL RS set is triggered. I.e., the set of RSs of the third PL is equal to the set of RSs of the first PL.

There are also possibilities for: the PL change of the partial RSs meets a PHR triggering condition, and the PHR related to the RS set of the second PL is triggered. I.e., the set of RSs of the third PL is equal to the set of RSs of the second PL.

The following possibilities also exist: the base station configures or indicates an RS set of the third PL. For example, the base station configures or indicates one or more RSs in a first set of RSs or a second set of RSs of the PL. For another example, the base station indicates the RS set of the third PL by the association between the power control parameter and the reference signal information, such as directly indicating the association index, or indirectly associating to the corresponding power control parameter { j, k, l } by the reference signal information.

There are also possibilities for: a set of RSs of the third PL is determined according to a predefined manner. For example, the set of RSs of the third PL is equal to the RSs of the predetermined position in the set of RSs of the first PL or the set of RSs of the second PL. E.g. the predetermined position may be the 1 st, or a few of the first.

Triggering and reporting the PHR to the RS set of the third PL, wherein the triggering and reporting comprise one of the following conditions:

a. reporting a PHR according to the number k of the RS of each PL.

Calculating the j, l used by the PHR for each PHR indication, or using the j, k, l of the PHR reported by the SRI indication associated with the configuration.

b. Reporting one PHR for each l.

If multiple k are associated with the same l, then the average of the PL values for multiple k is used. I.e. the number of PHR equals the number of configured l.

c. Reporting a PHR according to l associated with the number k of the RS of each PL.

If multiple k are associated with the same l, then the average of the PL values for multiple k is used. That is, the number of PHR is the number of l having a correlation with k corresponding to RS satisfying the condition.

d. One PHR is reported for each combination of k and l associated with k.

And calculating the information of j used by the PHR for each PHR indication, or using the { j, k, l } of the reported PHR indicated by the SRI associated with the configuration.

e. And reporting a preset number of PHRs by each CC/BWP/BWP group. For example, the predetermined number is 1. Then one power control parameter { j, k, l } is selected to calculate the PHR, or a comprehensive PHR is calculated according to a plurality of PHR of the plurality of power control parameters { j, k, l }.

Each of the above-mentioned PHR may be a real PHR or a virtual PHR.

The above l refers to the number of the first closed loop power control (set) or the number of the second closed loop power control (set). Each l refers to each closed-loop power control number in the corresponding first closed-loop power control (set) or second closed-loop power control (set).

Each of the { k, l } above refers to the RS set number and second closed-loop power control (set) number pair of the second PL having a relationship.

The j refers to the number of the first open-loop power control parameter set or the number of the second open-loop power control parameter set.

The base station informs the UE of the PHR parameters through RRC signaling, or MAC CE, or physical layer signaling, or the UE determines the PHR configuration parameters according to the preset rules.

The configuration parameters of the PHR include at least one of: reporting a PHR according to the number k of the RS of each PL, reporting a PHR according to each l, reporting a PHR according to l associated with the number k of the RS of each PL, reporting a PHR according to the combination of each k and l associated with k, and reporting a preset number of PHRs according to each CC/BWP/BWP group.

The UE determines that the configuration parameters of the PHR comprise at least one of the following characteristics:

1. the base station informs the UE, or the MAC layer of the UE informs the physical layer of the UE of at least one set of power control parameters { j, k, l }, and the UE calculates PHR corresponding to { j, k, l }.

The physical layer of the UE reports the at least one PHR to the MAC layer of the UE, and the MAC layer of the UE reports the at least one PHR to a base station.

Or the physical layer of the UE reports at least one PHR to the MAC layer of the UE, and the MAC layer of the UE selects one or several PHR from the at least one PHR and reports the selected PHR to the base station.

2. The base station informs the UE, or the MAC layer of the UE informs the physical layer of the UE of at least one set of power control parameters { j, k, l }, the physical layer of the UE calculates PHR corresponding to { j, k, l }, and a comprehensive PHR value is determined.

The method for the physical layer to determine an integrated PHR value based on multiple PHR is described in preferred embodiment 3.

3. The base station informs the UE, or an MAC layer of the UE informs a trigger type of a physical layer PHR of the UE, and the physical layer of the UE determines a preset number of PHRs according to the type of the trigger PHR.

The trigger type of the PHR is used for determining power control parameters of the PHR.

The trigger type of the PHR is used to determine power control parameters of the PHR of the CC/BWP at least where the PHR trigger event occurs.

The trigger type of the PHR includes at least one of: the method comprises the steps of periodically triggering PHR, PL change triggering PHR, adding or updating CC configuration, adding or updating CC groups, adding or updating BWP groups, and changing parameter configuration of PHR.

Preferred embodiment 5

The base station configures power control parameters, a reporting period of the PHR, a time length for forbidding continuous reporting of the PHR and a change threshold of PL for the UE.

And the UE starts a timer of the PHR and monitors the PL of the RS in real time.

And when the timer expires, triggering periodic PHR report.

And when the PHR is triggered due to the PL change of the RS monitored by the UE, the PHR report of the PL change is triggered.

After the PHR is triggered, when the UE receives a first UL grant (uplink grant) message for new transmission of the UE, indicating that the UE has uplink transmission resources on a certain CC/BWP, the PHR on the CC/BWP is a real PHR.

As shown in fig. 3, the UE is configured with 3 CCs. At time t1, PHR is triggered, and UL grant information for retransmission is received for CC #1 and CC #3 at times t2 and t3, respectively. UL grant information for the new transmission is received at CC #1 at time t5, indicating that an uplink transmission was sent on CC #1 at time t 8. The uplink transmission sent at time t8 may include PHR information. The PHR information includes PHR of all 3 CCs.

For CC #1, PHR is the true PHR.

Whether the PHR on the other CC/BWP configured with uplink transmission (referred to as uplink CC/BWP for short) is a real PHR or a virtual PHR is determined by one of the following methods:

1. after the PHR is triggered, receiving a first PDCCH aiming at other corresponding uplink CC/BWP, if the UL grant information of the UE is contained, the PHR of the CC/BWP is a real PHR, otherwise, the PHR is a virtual PHR.

As shown in fig. 3, the PHR transmitted at time t8 includes the virtual PHR of CC #2, and includes the real PHR determined by the uplink transmission scheduled at time t3 of CC # 3.

2. And receiving the first newly transmitted UL grant information for the UE and the first PDCCHs corresponding to other uplink CCs/BWPs at the same time, wherein if the UL grant information for the UE is included, the PHR of the CC/BWP is a real PHR, otherwise, the PHR is a virtual PHR. If the PDCCH is not received, the PHR of the CC/BWP is a virtual PHR.

As shown in fig. 3, since the first newly transmitted UL grant information is received at time t5, and no UL grant information for CC #2 and CC #3 is received at this time, the virtual PHR for CC #2 and CC #3 is included in the PHR transmitted at time t 8.

3. Before the scheduling information in the UL grant is validated after the first UL grant information for the new transmission of the UE is received, the first PDCCHs of other corresponding uplink CCs/BWPs are received, if the UL grant information of the UE is included, the PHR of the CC/BWP is a real PHR, otherwise, the PHR is a virtual PHR. If the PDCCH is not received, the PHR of the CC/BWP is a virtual PHR.

As shown in fig. 3, since the first newly transmitted UL grant information is received at time t5, the UL grant information schedules uplink transmission at time t 8. Between t5 and t8, UL grant information for CC #2 for the UE is not received, and thus CC #2 is a virtual PHR. Between t5 and t8, the UL grant information for CC #2 for the UE is received at time t6, so CC #3 is a real PHR.

The actual power control parameters { j, k, l } of the PHR are determined by the parameters of uplink transmission scheduled by the corresponding UL grant information.

The indication method of { j, k, l } of the PHR includes one of the following:

without explicit indication, the base station and the UE determine the number of m and its { j, k, l } in a predefined manner.

Indicating the value of m, and determining { j, k, l } of PHR according to a pre-configured relationship between m and { j, k, l }.

According to the association relationship between the pre-configured SRI and { j, k, l }, using the SRI to indicate the reported { j, k, l } of the PHR

As shown in fig. 3, in CC #1, when the UL grant information (describing the relationship with the DCI) at time t5 includes SRI, and the power control parameters { j, k, l } can be determined by the SRI, the set of power control parameters { j, k, l } is used in PHR calculation for CC # 1. Otherwise, the PHR of CC #1 adopts default power control parameters { j, k, l }.

The determination method of the power control parameters { j, k, l } of the virtual PHR comprises the following steps: m { j, k, l } sets are preconfigured for the virtual PHR, and one or a predetermined number of PHRs in M is determined according to at least one of the following methods:

1) Reporting PHRs of { j, k, l } with M being 0 to M-1 in turn according to the sequence, reporting PHRs corresponding to 1 set each time, or reporting sets of a preset number of PHRs each time.

For example, when M is 2, and { j, k, l } of M is 0 is {1,0,0}, and when M is 1, { j, k, l } is {2,1,1}, the PHR corresponding to 1 set is reported each time.

The PHR of { j, k, l } with m equal to 0 in the 1 st report, the PHR of { j, k, l } with m equal to 1 in the 2 nd report, the PHR of { j, k, l } with m equal to 0 in the 3 rd report, and so on.

For another example, when M is 6, M is 0 to M is 5, and { j, k, l } is configured, and PHR corresponding to 2 { j, k, l } sets is reported each time. Then, the PHR of { j, k, l } with m equal to 0 and m equal to 1 in the 1 st report, the PHR of { j, k, l } with m equal to 2 and m equal to 3 in the 2 nd report, the PHR of { j, k, l } with m equal to 4 and m equal to 5 in the 3 rd report, the PHR of { j, k, l } with m equal to 0 and m equal to 1 in the 4 th report, and so on.

The indication method of { j, k, l } of the PHR includes one of the following:

2) And determining m according to the reported time. I.e. m reported is a function of the transmission time. Reporting PHR corresponding to 1 set each time, or reporting a set with a preset number of PHR each time.

The PHR of { j, k, l } with m equal to 0 is reported at time i equal to 0, the PHR of { j, k, l } with m equal to 1 is reported at time i equal to 1, the PHR of { j, k, l } with m equal to 0 is reported at time i equal to 3, and so on.

For another example, when M is 6, M is 0 to M is 5, and { j, k, l } is configured, and PHR corresponding to 2 { j, k, l } sets is reported each time. Then, when the time i is 0, the PHR of { j, k, l } with m being 0 and m being 1 is reported, when the time i is 1, the PHR of { j, k, l } with m being 2 and m being 3 is reported, when the time i is 3, the PHR of { j, k, l } with m being 4 and m being 5 is reported, when the time i is 4, the PHR of { j, k, l } with m being 0 and m being 1 is reported, and so on.

The transmission time refers to a subframe number, a slot number, a frame number, or an OFDM symbol number.

The indication method of { j, k, l } of the PHR includes one of the following: and the base station and the UE determine the number m and the j, k, l thereof according to the PHR reporting time in a predefined mode.

3) One or a predetermined number { j, k, l } of PHR reports is selected according to the priority. Reporting PHR corresponding to 1 set each time, or reporting sets of a preset number of PHR each time. The priority determination method comprises at least one of the following steps:

high priority of low pH

For example, M is 2, M is 0 { j, k, l } is {1,0,0}, M is 1 { j, k, l } is {2,1,1}, and PHR corresponding to 1 set is reported each time. And the UE respectively calculates the PH values for the two m, and selects m with a small PH value to report.

High priority of large PL variation

For example, M is 2, and { j, k, l } is configured for M is 0 and M is 1, and PHR corresponding to 1 set is reported each time. And the UE respectively calculates the PL change from the PHR moment reporting the m last time for the two m, and selects m with large PL change for reporting.

In relation to the duration of the reporting, the longer the interval the higher the priority without reporting the PHR

For example, M is 2, and { j, k, l } is configured for M is 0 and M is 1, and PHR corresponding to 1 set is reported each time. And the UE respectively calculates timing from the PHR moment when the m is reported last time for two m and selects the m with the longest moment for reporting.

When a PHR trigger is caused by a change in PL, the m-priority associated with the RS of the PHR trigger caused by the PL change is high.

For example, if the PHR trigger of CC #2 is caused by a change in PL, assuming that the PL change of RS number k 2 of PL exceeds the threshold, the PHR of CC #2 should include a PHR of k 2. If M is 2, and { j, k, l } of M-0 is {1,0,0} and { j, k, l } of M-1 is {2,2,1}, a PHR of M-1 is reported.

The indication method of { j, k, l } of the PHR includes one of the following:

Indicating the value of m, and determining { j, k, l } of PHR according to the pre-configured relationship between m and { j, k, l }.

For a CC that triggers a PHR event, the triggering type of the PHR may affect the selection of the power control parameters { j, k, l } of the PHR of the CC.

When the PHR trigger is caused by PL change, the PHR corresponding to the CC at least includes the PHR of the RS with PL change.

As shown in fig. 3, if the PHR trigger of CC #2 is caused by a change in PL, e.g., a PL change in RS number k-2 of PL exceeds a threshold, the PHR of CC #2 should include a PHR of k-2.

When the real PHR does not contain the PHR of the PL change of the part of RS, one of the following ways is adopted:

replacing the PHR corresponding to the UL grant information with a PHR including the RS.

Or increasing PHR of the RS on the basis of PHR corresponding to UL grant information.

When the virtual PHR does not contain the PHR of the part of the RS, one of the following ways is adopted:

the original virtual PHR is replaced with a virtual PHR including the portion of the RS.

Or, the PHR of the RS is increased on the basis of the original virtual PHR.

When a PHR trigger event occurs, and before reporting a PHR, another CC also triggers a PHR, and the PHR is caused by a change of PL, the PHR on the CC triggered by the new PHR should at least include the PHR of the RS corresponding to the newly triggered PHR.

As shown in fig. 4, the UE is configured with 4 CCs. If the PHR trigger of CC #2 at time t1 is caused by a change in PL, e.g., a PL change with RS number k-2 of PL, the PHR of CC #2 should include a PHR with k-2. At time t7, the PHR of CC #4 is also triggered, for example, due to PL change with RS number k of 1 of PL, and the PHR transmitted at time t8 at least includes the PHR corresponding to the RS with RS number k of 1 of PL of CC # 4.

When a PHR triggering event occurs, before reporting a PHR, other CCs also trigger the PHR, and the PHR is caused by the change of PL, the new PHR triggering does not affect the PHR of other CCs triggered by the existing PHR.

When a PHR triggering event occurs, and before reporting a PHR, another CC also triggers a PHR, and the PHR is caused by the change of PL, the new PHR trigger does not affect the PHR of the other CC without the PHR trigger, such as CC # 3.

Or, after a PHR trigger event occurs, before reporting a PHR, another CC also triggers a PHR, and the PHR is caused by a change of PL, and the new PHR triggers updating its PHR to another CC without PHR trigger, for example, CC #3, according to the new PHR trigger time.

As shown in fig. 4, the PHR trigger exists at time t7 on CC #4, and does not affect the calculation parameters of the PHR trigger of CC #2 at time t1 on CC # 2.

For UL grant, PDCCH, DCI relationship:

the PDCCH is a downlink control channel including DCI (downlink control information) supporting different formats. For example, the DCI formats 0-0, 0-1, 1-0, 1-1, 2-0, 2-1, 2-2, 2-3 are used to support the requirements of issuing control information in different scenes.

The PDCCH is scrambled by different RNTIs, which may be UE specific, multicast, i.e. for a group of UEs, or broadcast, i.e. for all UEs.

The UE is configured to receive the PDCCH on a specific resource and attempt descrambling with a specific RNTI, and if descrambling is successful, the PDCCH is transmitted to the UE. The UE may be configured with multiple RNTIs and therefore may attempt to decode the PDCCH with a different RNTI and further parse the contents of the DCI based on the successful RNTI.

Some formats of DCI include UL grant information, such as DCI 0-0, 0-1, and other formats have no UL grant information, and may include DL grant information, such as DCI1-0, 1-1, or no grant information but other information, such as DCI2-2 is a TPC command for packet transmission.

The UL grant information includes scheduling information for uplink transmission, that is, resource information for uplink transmission, which may be a resource for new transmission or a resource for retransmission, and is referred to as a resource for new transmission and a resource for retransmission respectively.

Preferred embodiment 6 multiple BWPs share TPC commands and multiple k, l share TPC commands

In LTE, the TPC command is a transmit power control command used for a closed loop adjustment portion of transmit power. The TPC command is included in the DCI. When the DCI is transmitted in a unicast mode, namely the DCI is scrambled by using the UE-specific RNTI, each DCI only comprises the closed-loop power adjustment quantity of the target UE of the DCI; when transmitted in multicast, i.e. the DCIs are scrambled using the RNTI of the UE packet, each DCI contains at most one TPC command per CC for one UE.

In next generation technologies, each CC may be configured or activated with more than 1 BWP. If the number of active BWPs is greater than 1, each DCI should contain more than one TPC command per CC for one UE. Each BWP packet shares TPC commands or shares closed loop power control.

The number and the action range of the TPC commands carried by one UE in the DCI are determined by one of the following methods:

a. each CC includes TPC commands of the number of active BWPs, which are respectively used for power control of transmission on each active BWP

b. Each CC includes TPC commands of BWP packet number, which are respectively used for power control of transmission on each BWP packet

c. Each CC includes TPC commands of the packet number of the active BWPs, which are respectively used for power control of transmission on each BWP packet

d. TPC commands comprising the number of CC packets, for power control of the transmission on each CC packet respectively

The number of the TPC commands only considers that each DCI carries one closed-loop power control TPC command. For example, the closed loop power control number l carrying the determination is 0, or l is 1, or l is not fixed, and may be determined in other manners.

If more than 1 TPC command is transmitted by one DCI, the number of TPC commands is also extended. Including one of the following:

a) each activated BWP in each CC includes TPC commands for the number of closed-loop power controls supported on the BWP, and the TPC commands are used for power control of transmission of the corresponding closed-loop power controls on the activated BWP respectively

b) Each CC includes TPC commands of closed loop power control quantity supported on the BWP for each BWP packet, and the TPC commands are respectively used for power control of corresponding closed loop power control transmission on each BWP packet

c) Each activated BWP packet in each CC includes TPC commands for the number of closed-loop power controls supported on the activated BWP packet, and each TPC command is used for power control of the corresponding closed-loop power control transmission on each BWP packet

d) TPC commands containing the number of closed-loop power controls supported by the packet for each CC packet, and are respectively used for power control of corresponding transmission on each CC packet

In the case that a plurality of power control parameter combinations { j, k, l } are configured, the invention proposes to monitor the path loss amount of one or a plurality of k and l respectively or an average value aiming at the problem that PL in the trigger (trigger) condition of PHR is ambiguous as to which k and l.

Aiming at the problems that a method for determining { j, k, l } of a PHR is not clear and unfair possibly exists in a real PHR or a virtual PHR, the invention provides the method for determining { j, k, l }, and guarantees fairness for reporting PHRs with different { j, k, l } in turn by the virtual PHR or guarantees fairness and effectiveness of reporting by introducing priorities into different { j, k, l }.

Under the condition that a plurality of power control parameter combinations { j, k, l } are configured, reporting is carried out on a certain PHR, and because the trigger condition is the combination of a period and PL change (the PL change is only perceived by a UE side), a base station does not clearly know real/virtual and { j, k, l } of each PHR, the invention provides that PHR should carry information related to { j, k, l };

the invention provides reporting PHR in a BWP grouping mode and issuing TPC commands, wherein each CC has the possibility of reporting a plurality of PHR of the same type, and the number of the PHR is expanded aiming at a plurality of BWPs and a plurality of { j, k, l }.

By adopting the method of the invention, the PHR can be effectively triggered under the condition of configuring a plurality of power control parameter combinations (j, k, l), the fairness of reporting PHRs with different (j, k, l) can be ensured, and the problem that the base station cannot definitely know the power control parameter configuration of the PHR is also solved.

For convenience of description, the embodiments of the present invention are described using a base station and a UE, but are not limited to the present invention. In the implementation process, the base station and the UE may be replaced by names of various communication nodes, such as nb (nodeb), gNB (gNB), TRP (transmitter receiver point), ap (access point), station, user, STA, relay (relay), and terminal. The base station may also refer to a network side (network), UTRA, EUTRA, or the like.

The present invention is mainly described by taking uplink transmission as PUSCH transmission as an example, and it should be noted that the method and apparatus of the present invention are also applicable to other uplink transmissions, such as PUCCH transmission, SRS transmission, etc.

The parameters and methods mentioned in the present invention can be used for different channels, such as PUSCH, long PUSCH, short PUSCH, PUCCH, long PUCCH, short PUCCH, and signal SRS.

It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power headroom reporting method, comprising:

transmitting the PHR according to a predefined PHR format;

the format of the predefined PHR further includes any one of:

2. The power headroom reporting method of claim 1, wherein: the triggering condition of the PHR comprises any one of the following items:

in one RS set, at least a third preset number of set members are changed;

in a set of RSs, more than a predetermined percentage of set members change;

3. The power headroom reporting method of claim 2, wherein: the predetermined condition includes at least one of:

a fourth predetermined minimum number of RSs corresponding to PL;

RS at a predetermined position.

4. The power headroom reporting method of claim 2, wherein: the parameters of the PHR further include:

the reference signal information includes at least one of:

5. The power headroom reporting method of claim 4, wherein: the predetermined condition further comprises at least one of:

an RS determined by the reference signal information;

and the RS is determined by the index of the associated information.

6. The power headroom reporting method of claim 1, wherein: the parameters of the PHR further include:

the PHR is a real PHR or a virtual PHR.

7. The power headroom reporting method of claim 6, wherein: the method of determining that the PHR is a real PHR or a virtual PHR, comprising:

after the triggering condition of the PHR is satisfied, if uplink authorization information is received, the PHR on the component carrier CC or the bandwidth part BWP indicated by the uplink authorization information is a real PHR.

8. The power headroom reporting method of claim 7, wherein: the method of determining that the PHR is a real PHR or a virtual PHR, further comprising:

9. The power headroom reporting method of claim 7, wherein: the method of determining that the PHR is a real PHR or a virtual PHR, further comprising:

10. The power headroom reporting method according to one of claims 8 to 9, characterized in that: the predefined time instant or time period is determined by at least one of:

the moment when the trigger condition of the PHR is met;

the time when the uplink authorization information is received;

the received uplink authorization information indicates the transmission time;

and the sending time of the PHR.

11. The power headroom reporting method according to one of claims 7 or 10, characterized in that: the uplink authorization information includes at least one of:

new transmitted uplink grant information;

first uplink grant information;

the first newly transmitted uplink grant information.

12. The power headroom reporting method of claim 6, wherein: the method of determining the power control parameter comprises at least one of:

determining the power control parameter of the real PHR according to the power control parameter of the uplink transmission scheduled by the uplink authorization information;

Selecting a fifth preset number of power control parameter sets from M pre-configured power control parameter sets as the power control parameters of the virtual PHR, wherein M is an integer greater than or equal to 1, and the fifth preset number is a natural number between 1 and M.

13. The power headroom reporting method of claim 12, wherein: the selecting a fifth predetermined number of sets of power control parameters from the preconfigured M sets of power control parameters comprises at least one of:

14. The power headroom reporting method of claim 13, wherein: the method for determining the priority comprises at least one of the following steps:

the smaller the power margin value is, the higher the priority is;

the greater the PL change, the higher the priority;

15. The power headroom reporting method of claim 1, wherein: the format of the predefined PHR further includes:

each CC includes at least one PHR, one BWP or BWP packet per PHR.

16. The power headroom reporting method of claim 1, wherein: when the PHR is triggered by a change in PL, the transmitted PHR includes a PHR of an RS corresponding to the changed PL.

17. The power headroom reporting method of claim 1, wherein: when the PHR is triggered by a change of PL, the PHR on the CC or BWP where the PHR triggering event occurs includes the PHR of the RS corresponding to the changed PL.

18. The power headroom reporting method of claim 1, wherein: the power control parameter comprises at least one of:

19. A power headroom reporting apparatus comprising a determining unit and a transmitting unit, wherein:

the device comprises a determining unit, a judging unit and a judging unit, wherein the determining unit is used for determining parameters and a Power Headroom (PHR) value of the PHR after detecting that the PHR reaches a trigger condition, and the parameters of the PHR comprise power control parameters of the PHR;

A sending unit, configured to send a PHR value to a first communication node according to a format of a predefined power control parameter indicating a PHR;

the format of the predefined PHR further includes any one of:

20. A terminal comprising a processor and a memory; the processor is configured to execute a power headroom reporting program stored in the memory to implement the steps of the power headroom reporting method as follows:

transmitting the PHR according to a predefined PHR format;

the format of the predefined PHR further includes any one of:

each BWP or BWP packet includes at least one PHR, one set of power control parameters for each PHR.

21. A computer readable storage medium storing one or more programs, the one or more programs being executable by one or more processors for performing the steps of a power headroom reporting method as follows:

transmitting the PHR according to a predefined PHR format;

the format of the predefined PHR further includes any one of:

22. A TPC command sending method comprises the following steps:

and the base station sends a downlink control information block DCI carrying power control commands (TPC) to the terminals, wherein for each terminal, the number of the TPC commands contained in one CC is determined according to the BWP number or the activated BWP number, or the TPC number contained in one CC is determined according to the closed-loop power control number supported by the CC.

23. A TPC command sending method comprises the following steps:

the base station sends a downlink control information block DCI carrying power control commands TPC to the terminal, wherein for each terminal, one CC contains N TPC commands for each BWP or each activated BWP, and N is the closed-loop power control number supported on the BWP.

24. A TPC command transmitting apparatus comprising a first transmitting unit, wherein:

A first sending unit, configured to send a downlink control information block DCI carrying power control commands TPC commands to a terminal, where, for each terminal, the number of TPC commands included in one CC is determined according to the number of BWPs or the number of active BWPs, or the number of TPC commands included in one CC is determined according to the number of closed-loop power controls supported by the CC.

25. A TPC command transmitting apparatus comprising a second transmitting unit, wherein:

a second sending unit, configured to send a downlink control information block DCI carrying power control commands TPC to a terminal, where for each terminal, one CC includes N TPC commands for each BWP or each activated BWP, where N is the number of closed-loop power controls supported on the BWP.

26. A base station comprising a processor and a memory; the processor is configured to execute the TPC command transmitting program stored in the memory, so as to implement the following steps of the TPC command transmitting method:

and sending a downlink control information block DCI carrying power control commands (TPC) to the terminals, wherein for each terminal, the number of the TPC commands contained in one CC is determined according to the number of the BWPs or the number of the activated BWPs, or the number of the TPCs contained in one CC is determined according to the number of closed loop power controls supported by the CC.

27. A base station comprising a processor and a memory; the processor is configured to execute the TPC command transmitting program stored in the memory, so as to implement the following steps of the TPC command transmitting method:

and sending a downlink control information block DCI carrying power control commands TPC to the terminal, wherein for each terminal, one CC contains N TPC commands for each BWP or each activated BWP, and N is the closed-loop power control number supported on the BWP.

28. A computer readable storage medium, storing one or more programs, the one or more programs being executable by one or more processors for performing the steps of a TPC command transmitting method as follows:

29. A computer readable storage medium, storing one or more programs, the one or more programs being executable by one or more processors for performing the steps of a TPC command transmitting method as follows: