CN110167122B - Uplink physical shared channel power control method and terminal - Google Patents

Uplink physical shared channel power control method and terminal Download PDF

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CN110167122B
CN110167122B CN201810151024.5A CN201810151024A CN110167122B CN 110167122 B CN110167122 B CN 110167122B CN 201810151024 A CN201810151024 A CN 201810151024A CN 110167122 B CN110167122 B CN 110167122B
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pusch
parameter
transmission period
current transmission
service type
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CN110167122A (en
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林祥利
郑方政
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Datang Mobile Communications Equipment Co Ltd
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Telecommunications Science and Technology Research Institute Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss

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  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention relates to the technical field of communication, in particular to a method and a terminal for controlling uplink physical shared channel power, which are used for solving the problem that in the prior art, when DCI does not contain SRI information, PUSCH power control parameters cannot be determined in the prior art. A terminal receives a downlink control message sent by a base station; if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, the terminal determines a Physical Uplink Shared Channel (PUSCH) power control parameter of the current transmission period at least according to the service type of the PUSCH of the current transmission period; and the PUSCH power control parameter is used for determining the sending power of the PUSCH by the terminal according to a preset algorithm. Therefore, the PUSCH power control parameter of the current transmission period can be determined under the condition that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, and further the sending power of the PUSCH can be determined.

Description

Uplink physical shared channel power control method and terminal
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a power control method and a terminal for an uplink physical shared channel.
Background
With the development and change of the demand of mobile communication services, organizations such as International Telecommunications Union (ITU) and the like have started to research New wireless communication systems, such as a fifth Generation wireless communication system (5Generation New RAT, 5G NR).
In the 5G NR, when a beamforming technique is used, a terminal may determine a downlink pilot for path loss measurement through a reference Signal Resource Indication (SRI) so as to perform a power control parameter and indicate which corresponding Uplink beam is used for transmission, where a mapping relationship set between the SRI and a Physical Uplink Shared Channel (PUSCH) power control parameter is configured through a high-layer signaling. The SRI needs to be dynamically indicated in a Downlink Control Information (DCI), but whether the SRI is included in the DCI is optional. When the DCI does not include the SRI information, the PUSCH power control parameter cannot be determined in the prior art.
Disclosure of Invention
The embodiment of the invention provides a method and a terminal for controlling uplink physical shared channel power, which are used for solving the problem that in the prior art, when DCI does not contain SRI information, PUSCH power control parameters cannot be determined in the prior art.
In a first aspect, an embodiment of the present invention provides a method for controlling uplink physical shared channel power, including: a terminal receives a downlink control message sent by a base station; if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, the terminal determines a Physical Uplink Shared Channel (PUSCH) power control parameter of the current transmission period at least according to the service type of the PUSCH of the current transmission period; and the PUSCH power control parameter is used for the terminal to determine the sending power of the PUSCH according to a preset algorithm.
In a possible implementation manner, the determining, by the terminal, the PUSCH power control parameter for the current transmission period according to at least a service type of an uplink physical shared channel, PUSCH, of the current transmission period includes: the terminal determines a first parameter for power control at least according to the service type of the PUSCH of the current transmission period; the terminal determines a second parameter for the path loss compensation parameter at least according to the service type of the PUSCH of the current transmission period; and the terminal determines a third parameter for closed loop power control at least according to the service type of the PUSCH of the current transmission period.
In a possible implementation manner, the determining, by the terminal, a first parameter for power control according to at least a service type of a PUSCH of a current transmission period includes: the terminal determines PUSCH target power and a path loss compensation factor corresponding to the PUSCH service type of the current transmission period according to the PUSCH service type of the current transmission period and the first corresponding relation; the first corresponding relation is the corresponding relation between the service type and the target power of the PUSCH and the path loss compensation factor; the terminal determines a first parameter corresponding to the PUSCH of the current transmission period according to a second corresponding relation, and the PUSCH target power and the path loss compensation factor corresponding to the service type of the PUSCH of the current transmission period; the second corresponding relation is the corresponding relation between the first parameter and the target power of the PUSCH and the path loss compensation factor.
In a possible implementation manner, the first corresponding relationship is preset or configured by a higher layer signaling of a base station; the second correspondence is configured by high level signaling of the base station.
In a possible implementation manner, the determining, by the terminal, a second parameter for a path loss compensation parameter according to at least a service type of a PUSCH of a current transmission period includes: and the terminal determines the second parameter for the path loss measurement from the reference signal of the downlink wave beam according to the service type of the PUSCH of the current transmission period.
In a possible implementation manner, the determining, by the terminal, the second parameter for path loss measurement from the reference signal of the downlink beam according to the service type of the PUSCH of the current transmission period includes: if the service type of the PUSCH of the current transmission period is RACH Msg3 transmission, the terminal determines that the sequence number of the reference signal used for RACH Msg1 power configuration and for RACH Msg2 channel tracking compensation is the second parameter; or, if the service type of the PUSCH of the current transmission period is grant-based transmission, the terminal determines that the sequence number of the beam management reference signal in the downlink beam of the detected UL grant is the second parameter.
In a possible implementation manner, the determining, by the terminal, a third parameter for closed-loop power control according to at least a service type of a PUSCH of a current transmission period includes: if the service type of the PUSCH of the current transmission period is RACH Msg3 transmission, the terminal resets the closed-loop power of the RACH Msg3 and determines the third parameter; wherein the closed loop power control of RACH Msg3 is reset based on the power setting of RACH Msg1 and the power control in RACH Msg 2; if the service type of the PUSCH of the current transmission period is grant transmission and the terminal configures two power control loops, the terminal determines the number of the closed-loop control loop associated with the beam management reference signal of the downlink beam as the third parameter.
In a possible implementation manner, before the terminal determines the PUSCH power control parameter of the current transmission period at least according to the service type of the uplink physical shared channel PUSCH of the current transmission period, the method further includes: and the terminal determines that the serving cell in which the terminal is positioned is a non-scheduled serving cell.
In a possible implementation manner, the method for controlling uplink physical shared channel power further includes: if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message and the serving cell where the terminal is located is a non-scheduled serving cell, determining the sending power of the PUSCH according to a pre-configured default value; the preconfigured default values are used for confirming the default values of the target power and the path loss compensation factor of the first parameter, the default value of the second parameter and the third parameter; and the default value of the pre-configuration is configured by a high-level parameter SRI-PUSCH Power Control-Mapping.
In a second aspect, an embodiment of the present invention provides a terminal, including:
a receiving unit, configured to receive a downlink control message sent by a base station;
a determining unit, configured to determine, if it is determined that the sounding reference signal resource indication SRI does not exist in the downlink control message, a PUSCH power control parameter for a current transmission period at least according to a service type of an uplink physical shared channel, PUSCH, of the current transmission period; and the PUSCH power control parameter is used for the terminal to determine the sending power of the PUSCH according to a preset algorithm.
In a possible implementation manner, the determining unit is specifically configured to: determining a first parameter for power control at least according to the service type of the PUSCH of the current transmission period; determining a second parameter for the path loss compensation parameter at least according to the service type of the PUSCH of the current transmission period; and determining a third parameter for closed loop power control according to at least the service type of the PUSCH of the current transmission period.
In a possible implementation manner, the determining unit is specifically configured to: determining a preset PUSCH target power and a preset path loss compensation factor corresponding to the service type of the PUSCH in the current transmission period according to the service type of the PUSCH in the current transmission period and the first corresponding relation; the first corresponding relation is the corresponding relation between the service type and the preset PUSCH target power and the path loss compensation factor; determining a first parameter corresponding to the PUSCH of the current transmission period according to a second corresponding relation, and a preset PUSCH target power and a preset path loss compensation factor corresponding to the service type of the PUSCH of the current transmission period; the second corresponding relation is a corresponding relation between the first parameter and a preset PUSCH target power and a preset path loss compensation factor.
In a possible implementation manner, the first corresponding relationship is preset or configured by a higher layer signaling of a base station; the second correspondence is configured by high level signaling of the base station.
In a possible implementation manner, the determining unit is specifically configured to: and determining the second parameter for path loss measurement from the reference signal of the downlink beam according to the service type of the PUSCH of the current transmission period.
In a possible implementation manner, the determining unit is specifically configured to: if the service type of the PUSCH of the current transmission period is RACH Msg3 transmission, determining that the sequence number of the reference signal used for RACH Msg1 power configuration and for RACH Msg2 channel tracking compensation is the second parameter; or, if the service type of the PUSCH of the current transmission period is grant-based transmission, determining that the sequence number of the beam management reference signal in the downlink beam of the UL grant is detected as the second parameter.
In a possible implementation manner, the determining unit is specifically configured to: if the service type of the PUSCH in the current transmission period is RACH Msg3 transmission, resetting the closed-loop power of the RACH Msg3 and determining the third parameter; wherein the closed loop power control of RACH Msg3 is reset based on the power setting of RACH Msg1 and the power control in RACH Msg 2; if the service type of the PUSCH of the current transmission period is grant transmission and the terminal configures two power control loops, the terminal determines the number of the closed-loop control loop associated with the beam management reference signal of the downlink beam as the third parameter.
In a possible implementation manner, the determining unit is further configured to: before the terminal determines the PUSCH power control parameter of the current transmission period at least according to the service type of the uplink physical shared channel (PUSCH) of the current transmission period, determining that the serving cell where the terminal is located is a non-scheduled serving cell.
In a possible implementation manner, the determining unit is further configured to: if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message and the serving cell where the terminal is located is a non-scheduled serving cell, determining the sending power of the PUSCH according to a pre-configured default value; the preconfigured default values are used for confirming the default values of the target power and the path loss compensation factor of the first parameter, the default value of the second parameter and the third parameter; and the default value of the pre-configuration is configured by a high-level parameter SRI-PUSCH Power Control-Mapping.
In a third aspect, an embodiment of the present invention provides an electronic device, including:
at least one processor; and the number of the first and second groups,
a transceiver and a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to cause the at least one processor to perform the method of the first aspect and any possible implementation of the first aspect.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores computer instructions for causing a computer to execute the method described in the first aspect and any possible implementation manner of the first aspect.
In the embodiment of the invention, a terminal receives a downlink control message sent by a base station; if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, namely, the downlink control message does not have related information indicating the PUSCH power control parameter, the terminal determines the PUSCH power control parameter of the current transmission period at least according to the service type of the PUSCH of the uplink physical shared channel of the current transmission period; and the PUSCH power control parameter is used for determining the sending power of the PUSCH by the terminal according to a preset algorithm. Therefore, the PUSCH power control parameter of the current transmission period can be determined under the condition that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, and further the sending power of the PUSCH can be determined.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating a method for controlling uplink physical shared channel power according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
First, an application scenario of the embodiment of the present invention is described.
In 5G, PUCCH may power control PUSCH in slot (slot) i on carrier f of serving cell c by equation (1) below:
Figure GDA0002452219420000071
wherein, PO_PUSCH,f,c(j) The PUSCH target power configured for the high layer on the carrier f is obtained by combining a cell exclusive part and a UE exclusive part;
PLf,c(qd) For the path loss compensation parameter, qdA reference signal resource sequence number used in the path loss measurement configured for the high-level signaling;
ΔTF,f,c(i) is a power offset value;
ff,c(i, l) is a closed loop power adjustment parameter, and l represents a closed loop power process number.
The 5G system supports the beamforming transmission technology of the downlink and the uplink. When multiple beamforming transmission is adopted, corresponding downlink reference signals exist on a plurality of downlink beams respectively for path loss estimation and downlink beam management. The terminal needs to determine which reference signal is used for path loss measurement in the plurality of downlink reference signals to decide the power control parameter setting of the PUSCH transmission; and determining the beam transmission of the uplink PUSCH corresponding to the downlink beam and the number corresponding to the closed-loop power adjustment parameter. For PUSCH power control parameters, the parameters can be determined by SCI indication information, SCI indication field and power control parameters (e.g., j, q)dAnd l) is configured by a PUSCH Power Control-Mapping high-level signaling.
In 5G, when multiple-beam (multi-beam) transmission is configured, and when SCI is not transmitted in DCI, the terminal cannot determine PUSCH power control parameters (e.g., j, q)dAnd l) configuration in multiple beam transmission, power control cannot be effectively performed, and an uplink beam matched with a corresponding downlink beam cannot be effectively selected for transmission.
The embodiment of the invention provides a control method of PUSCH power, which can be applied to a terminal, such as a mobile phone, a tablet computer, a personal computer, a notebook computer, a wearable electronic device and other devices with communication functions.
In the embodiment of the invention, for the transmission configured by a plurality of beams (multi-beam), when SCI is not transmitted in DCI, the terminal implicitly determines the relevant parameters for carrying out PUSCH power control.
Fig. 1 is a schematic flowchart illustrating a method for processing a message according to an embodiment of the present invention. As shown in fig. 2, the method comprises the steps of:
step 101, a terminal receives a downlink control message sent by a base station;
step 102, if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, the terminal determines a Physical Uplink Shared Channel (PUSCH) power control parameter of the current transmission period at least according to the service type of the PUSCH of the current transmission period; and the PUSCH power control parameter is used for determining the sending power of the PUSCH by the terminal according to a preset algorithm.
In the embodiment of the invention, a terminal receives a downlink control message sent by a base station; if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, namely, the downlink control message does not have related information indicating the PUSCH power control parameter, the terminal determines the PUSCH power control parameter of the current transmission period at least according to the service type of the PUSCH of the uplink physical shared channel of the current transmission period; and the PUSCH power control parameter is used for determining the sending power of the PUSCH by the terminal according to a preset algorithm. Therefore, the PUSCH power control parameter of the current transmission period can be determined under the condition that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, and further the sending power of the PUSCH can be determined.
In step 102, the PUCCH power control parameter may be a parameter in the above formula (1), for example, j and q in the above formula (1)dAnd l any one or more of the three parameters.
In a possible embodiment, the terminal determines the PUSCH power control parameter of the current transmission period according to at least the service type of the uplink physical shared channel PUSCH of the current transmission period, and may include any one or any more of the following three cases:
in the first case, the terminal determines a first parameter for power control at least according to the service type of the PUSCH of the current transmission period; the first parameter may be j in the above formula (1);
under the second condition, the terminal determines a second parameter for the path loss compensation parameter at least according to the service type of the PUSCH of the current transmission period; the second parameter may be q in the above formula (1)d；
Under the third condition, the terminal determines a third parameter for closed-loop power control at least according to the service type of the PUSCH of the current transmission period; the third parameter may be l in the above formula (1).
In an optional embodiment, for the first case, the determining, by the terminal, the first parameter for power control according to at least the service type of the PUSCH of the current transmission period includes: the terminal determines PUSCH target power and a path loss compensation factor corresponding to the PUSCH service type of the current transmission period according to the PUSCH service type of the current transmission period and the first corresponding relation; the first corresponding relation is the corresponding relation between the service type and the target power of the PUSCH and the path loss compensation factor.
Further, the terminal determines a first parameter corresponding to the PUSCH of the current transmission period according to the second corresponding relationship, and the PUSCH target power and the path loss compensation factor corresponding to the service type of the PUSCH of the current transmission period; the second corresponding relation is the corresponding relation between the first parameter and the target power of the PUSCH and the path loss compensation factor.
In the embodiment of the present invention, the service type of the PUSCH may include, but is not limited to, grant-based transmission, Semi-Persistent Scheduling (SPS) configuration transmission, or Random Access Channel (RACH) message 3(Msg3) transmission.
In a possible embodiment, the first corresponding relationship may be preset in the terminal, or may be configured by a higher layer signaling of the base station; the second correspondence is configured by higher layer signaling of the base station. E.g. configured by higher layer signalling of the base station in a first correspondenceFor example, the high-level signaling of the base station configures multiple sets of PUSCH target power and path loss compensation factors corresponding to the service type of the PUSCH. For example, when the service type of the PUSCH in the current transmission period is grant-based (grant) transmission, the target power and the path loss compensation factor of the PUSCH corresponding to the grant-based (grant) transmission may be determined according to the first corresponding relationship, and since the target power and the path loss compensation factor of the PUSCH corresponding to multiple sets of the first parameters are also configured in the second corresponding relationship, the first parameter corresponding to the PUSCH in the current transmission period may be determined, so that the first parameter corresponding to the PUSCH in the formula (1) may be determined
Figure GDA0002452219420000091
And PO_PUSCH,f,c(j)。
In a possible embodiment, the terminal determines the second parameter for the path loss compensation parameter according to at least the service type of the PUSCH of the current transmission period, including: and the terminal determines a second parameter for measuring the path loss from the reference signal of the downlink wave beam according to the service type of the PUSCH of the current transmission period.
Each downlink beam corresponds to a reference signal of the downlink beam, and the mapping relation between the target transmission power of the downlink beam and the target transmission power of the uplink PUSCH beam can be configured by a high-level signaling, so that the downlink beam matched with the target transmission power of the uplink PUSCH beam can be determined, and the beam management reference signal in the associated downlink beam is used as a parameter signal for the uplink beam for path loss measurement. Therefore, the uplink wave beam matched with the corresponding downlink wave beam can be effectively selected for transmission.
Further, the specific implementation manner for determining the second parameter includes any one of the following optional implementation manners:
in an optional implementation manner, if the service type of the PUSCH of the current transmission period is RACH Msg3 transmission, the terminal determines that the sequence number of the reference signal used for RACH Msg1 power configuration and for RACH Msg2 channel tracking compensation is a second parameter; the reference Signal in the embodiment of the present invention may be a channel state information-reference signals (CSI-RS) or a synchronization Signal Block (SS Block).
In another optional implementation, if the service type of the PUSCH in the current transmission period is grant-based transmission, the terminal determines that the sequence number of the beam management reference signal in the downlink beam of the detected UL grant is the second parameter. The beam management reference signal in the embodiment of the invention can be CSI-RS or SS block.
In a possible implementation manner, the terminal determines the third parameter for closed-loop power control according to at least the service type of the PUSCH of the current transmission period, which includes the following two cases:
in the first case, if the service type of the PUSCH of the current transmission period is RACH Msg3 transmission, the terminal resets the closed-loop power of RACH Msg3 and determines a third parameter; wherein the resetting of the closed-loop power control of RACH Msg3 is based on the power setting of RACH Msg1 and the power control in RACH Msg 2;
in the second case, if the service type of the PUSCH of the current transmission period is grant transmission and the terminal configures two power control loops, the terminal determines the number of the closed-loop control loop associated with the beam management reference signal of the downlink beam as the third parameter.
In the second case, the mapping relationship of the beam management reference signal associated with one of the two closed-loop power control loops is configured by the high-level signaling, and after the terminal determines the beam management reference signal of the downlink beam, the number of the associated closed-loop power control loop can be determined.
In a possible implementation manner, before the terminal determines the PUSCH power control parameter of the current transmission period at least according to the service type of the uplink physical shared channel PUSCH of the current transmission period, the method further includes: and the terminal determines that the serving cell in which the terminal is positioned is a non-scheduled serving cell. That is to say, if the serving cell where the terminal is located is a non-scheduled serving cell and the sounding reference signal resource indication SRI does not exist in the downlink control message, the PUSCH power control parameter of the current transmission period is determined at least according to the service type of the uplink physical shared channel PUSCH of the current transmission period by the terminal.
In another possible implementation manner, if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message and the serving cell where the terminal is located is a non-scheduled serving cell, the terminal determines the sending power of the PUSCH according to a pre-configured default value; the preconfigured default values are for identifying a default value for the target power and path loss compensation factor for the first parameter, a default value for the second parameter, and a third parameter.
Optionally, the preconfigured default value is configured by a higher layer parameter SRI-PUSCH Power Control-Mapping.
From the above, it can be seen that: a terminal receives a downlink control message sent by a base station; if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, namely, the downlink control message does not have related information indicating the PUSCH power control parameter, the terminal determines the PUSCH power control parameter of the current transmission period at least according to the service type of the PUSCH of the uplink physical shared channel of the current transmission period; and the PUSCH power control parameter is used for determining the sending power of the PUSCH by the terminal according to a preset algorithm. Therefore, the PUSCH power control parameter of the current transmission period can be determined under the condition that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, and further the sending power of the PUSCH can be determined.
Based on the foregoing embodiments and the same concept, fig. 2 is a schematic structural diagram of a terminal according to an embodiment of the present invention, where the terminal may implement any one or more of the steps in the corresponding method shown in fig. 1. As shown in fig. 2, the terminal 200 may include a receiving unit 201 and a determining unit 202. Wherein:
a receiving unit 201, configured to receive a downlink control message sent by a base station;
a determining unit 202, configured to determine, if it is determined that the sounding reference signal resource indication SRI does not exist in the downlink control message, a PUSCH power control parameter of a current transmission period according to at least a service type of an uplink physical shared channel PUSCH of the current transmission period; and the PUSCH power control parameter is used for the terminal to determine the sending power of the PUSCH according to a preset algorithm.
Optionally, the determining unit 202 is specifically configured to: determining a first parameter for power control at least according to the service type of the PUSCH of the current transmission period; determining a second parameter for the path loss compensation parameter at least according to the service type of the PUSCH of the current transmission period; and determining a third parameter for closed loop power control according to at least the service type of the PUSCH of the current transmission period.
Optionally, the determining unit 202 is specifically configured to: determining a preset PUSCH target power and a preset path loss compensation factor corresponding to the service type of the PUSCH in the current transmission period according to the service type of the PUSCH in the current transmission period and the first corresponding relation; the first corresponding relation is the corresponding relation between the service type and the preset PUSCH target power and the path loss compensation factor; determining a first parameter corresponding to the PUSCH of the current transmission period according to a second corresponding relation, and a preset PUSCH target power and a preset path loss compensation factor corresponding to the service type of the PUSCH of the current transmission period; the second corresponding relation is a corresponding relation between the first parameter and a preset PUSCH target power and a preset path loss compensation factor.
Optionally, the first corresponding relationship is preset or configured by a high layer signaling of the base station; the second correspondence is configured by high level signaling of the base station.
Optionally, the determining unit 202 is specifically configured to: and determining the second parameter for path loss measurement from the reference signal of the downlink beam according to the service type of the PUSCH of the current transmission period.
Optionally, the determining unit 202 is specifically configured to: if the service type of the PUSCH of the current transmission period is RACH Msg3 transmission, determining that the sequence number of the reference signal used for RACH Msg1 power configuration and for RACH Msg2 channel tracking compensation is the second parameter; or, if the service type of the PUSCH of the current transmission period is grant-based transmission, determining that the sequence number of the beam management reference signal in the downlink beam of the UL grant is detected as the second parameter.
Optionally, the determining unit 202 is specifically configured to: if the service type of the PUSCH in the current transmission period is RACH Msg3 transmission, resetting the closed-loop power of the RACH Msg3 and determining the third parameter; wherein the closed loop power control of RACH Msg3 is reset based on the power setting of RACH Msg1 and the power control in RACH Msg 2; if the service type of the PUSCH of the current transmission period is grant transmission and the terminal configures two power control loops, the terminal determines the number of the closed-loop control loop associated with the beam management reference signal of the downlink beam as the third parameter.
Optionally, the determining unit 202 is further configured to: and determining that the serving cell in which the terminal is positioned is a non-scheduled serving cell before the terminal determines the PUSCH power control parameter of the current transmission period at least according to the service type of the uplink physical shared channel (PUSCH) of the current transmission period.
Optionally, the determining unit 202 is further configured to: if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message and the serving cell where the terminal is located is a non-scheduled serving cell, determining the sending power of the PUSCH according to a pre-configured default value; the preconfigured default values are used for confirming the default values of the target power and the path loss compensation factor of the first parameter, the default value of the second parameter and the third parameter; and the default value of the pre-configuration is configured by a high-level parameter SRI-PUSCH Power Control-Mapping.
From the above, it can be seen that: a terminal receives a downlink control message sent by a base station; if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, namely, the downlink control message does not have related information indicating the PUSCH power control parameter, the terminal determines the PUSCH power control parameter of the current transmission period at least according to the service type of the PUSCH of the uplink physical shared channel of the current transmission period; and the PUSCH power control parameter is used for determining the sending power of the PUSCH by the terminal according to a preset algorithm. Therefore, the PUSCH power control parameter of the current transmission period can be determined under the condition that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, and further the sending power of the PUSCH can be determined.
For the concepts, explanations, detailed descriptions and other steps related to the above terminal and related to the technical solution provided by the embodiment of the present invention, please refer to the foregoing uplink physical shared channel power control method or the descriptions related to these contents in other embodiments, which are not described herein again.
Based on the same concept, the present application provides an electronic device comprising at least one processor; and a transceiver and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the reception processing method in the above embodiments.
Taking a processor as an example, fig. 3 is a schematic structural diagram of an electronic device provided in the present application.
The electronic device comprises a transceiver 301, a processor 302, a memory 303 and a communication interface 304; wherein the transceiver 301, the processor 302, the memory 303 and the communication interface 304 are connected to each other by a bus 305.
The memory 303 is used to store programs. In particular, the program may include program code including computer operating instructions. The memory 303 may be a volatile memory (volatile memory), such as a random-access memory (RAM); a non-volatile memory (non-volatile memory) such as a flash memory (flash memory), a hard disk (HDD) or a solid-state drive (SSD); any one or combination of volatile and non-volatile memory may also be used.
The memory 303 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:
and (3) operating instructions: including various operational instructions for performing various operations.
Operating the system: including various system programs for implementing various basic services and for handling hardware-based tasks.
The bus 305 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 3, but this does not mean only one bus or one type of bus.
The processor 302 may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP. But also a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
The transceiver 301 is configured to receive a downlink control message sent by a base station;
the processor 302 is configured to read the program in the memory 303, and execute the following method:
if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, the terminal determines a Physical Uplink Shared Channel (PUSCH) power control parameter of the current transmission period at least according to the service type of the PUSCH of the current transmission period; and the PUSCH power control parameter is used for the terminal to determine the sending power of the PUSCH according to a preset algorithm.
The memory 303 is used to store one or more executable programs, and may store data used by the processor 302 in performing operations.
Optionally, the processor 302 is specifically configured to:
determining a first parameter for power control at least according to the service type of the PUSCH of the current transmission period;
determining a second parameter for the path loss compensation parameter at least according to the service type of the PUSCH of the current transmission period;
and determining a third parameter for closed loop power control according to at least the service type of the PUSCH of the current transmission period.
Optionally, the processor 302 is specifically configured to: determining a preset PUSCH target power and a preset path loss compensation factor corresponding to the service type of the PUSCH in the current transmission period according to the service type of the PUSCH in the current transmission period and the first corresponding relation; the first corresponding relation is the corresponding relation between the service type and the preset PUSCH target power and the path loss compensation factor; determining a first parameter corresponding to the PUSCH of the current transmission period according to a second corresponding relation, and a preset PUSCH target power and a preset path loss compensation factor corresponding to the service type of the PUSCH of the current transmission period; the second corresponding relation is a corresponding relation between the first parameter and a preset PUSCH target power and a preset path loss compensation factor.
Optionally, the first corresponding relationship is preset or configured by a high layer signaling of the base station; the second correspondence is configured by high level signaling of the base station.
Optionally, the processor 302 is specifically configured to: and determining the second parameter for path loss measurement from the reference signal of the downlink beam according to the service type of the PUSCH of the current transmission period.
Optionally, the processor 302 is specifically configured to: if the service type of the PUSCH of the current transmission period is RACH Msg3 transmission, determining that the sequence number of the reference signal used for RACH Msg1 power configuration and for RACH Msg2 channel tracking compensation is the second parameter; or, if the service type of the PUSCH of the current transmission period is grant-based transmission, determining that the sequence number of the beam management reference signal in the downlink beam of the UL grant is detected as the second parameter.
Optionally, the processor 302 is specifically configured to:
if the service type of the PUSCH in the current transmission period is RACH Msg3 transmission, resetting the closed-loop power of the RACH Msg3 and determining the third parameter; wherein the closed loop power control of RACH Msg3 is reset based on the power setting of RACH Msg1 and the power control in RACH Msg 2; if the service type of the PUSCH of the current transmission period is grant transmission and the terminal configures two power control loops, the terminal determines the number of the closed-loop control loop associated with the beam management reference signal of the downlink beam as the third parameter.
Optionally, the processor 302 is further configured to:
and determining that the serving cell in which the terminal is positioned is a non-scheduled serving cell before the terminal determines the PUSCH power control parameter of the current transmission period at least according to the service type of the uplink physical shared channel (PUSCH) of the current transmission period.
Optionally, the processor 302 is further configured to:
if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message and the serving cell where the terminal is located is a non-scheduled serving cell, determining the sending power of the PUSCH according to a pre-configured default value; the preconfigured default values are used for confirming the default values of the target power and the path loss compensation factor of the first parameter, the default value of the second parameter and the third parameter; and the default value of the pre-configuration is configured by a high-level parameter SRI-PUSCH Power Control-Mapping.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
In addition, the present application also provides a computer-readable storage medium, which stores computer instructions for causing the computer to execute any one of the above uplink physical shared channel power control methods.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims (6)

1. A method for controlling uplink physical shared channel power includes:
a terminal receives a downlink control message sent by a base station;
if the terminal determines that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, the terminal determines whether a serving cell where the terminal is located is a non-scheduled serving cell, and if so, determines the sending power of a Physical Uplink Shared Channel (PUSCH) according to a pre-configured default value; the preconfigured default values are used for confirming the default values of the target power and the path loss compensation factor of the first parameter, the default value of the second parameter and the third parameter; the default value of the pre-configuration is configured by a high-level parameter SRI-PUSCH Power Control-Mapping;
if not, the terminal determines the PUSCH power control parameter of the current transmission period at least according to the service type of the uplink physical shared channel (PUSCH) of the current transmission period; the PUSCH power control parameter is used for the terminal to determine the sending power of the PUSCH according to a preset algorithm;
the terminal determines PUSCH target power and a path loss compensation factor corresponding to the PUSCH service type of the current transmission period according to the PUSCH service type of the current transmission period and the first corresponding relation; the first corresponding relation is the corresponding relation between the service type and the target power of the PUSCH and the path loss compensation factor; the terminal determines a first parameter corresponding to the PUSCH of the current transmission period according to a second corresponding relation, and the PUSCH target power and the path loss compensation factor corresponding to the service type of the PUSCH of the current transmission period; the second corresponding relation is the corresponding relation between the first parameter and the PUSCH target power and the path loss compensation factor;
if the service type of the PUSCH of the current transmission period is RACH Msg3 transmission, the terminal determines that the sequence number of the reference signal used for RACH Msg1 power configuration and for RACH Msg2 channel tracking compensation is the second parameter; or, if the service type of the PUSCH of the current transmission period is grant-based transmission, the terminal determines that the sequence number of the beam management reference signal in the downlink beam of the detected UL grant is the second parameter;
if the service type of the PUSCH of the current transmission period is RACH Msg3 transmission, the terminal resets the closed-loop power of the RACH Msg3 and determines the third parameter; wherein the closed loop power control of RACH Msg3 is reset based on the power setting of RACH Msg1 and the power control in RACH Msg 2; if the service type of the PUSCH of the current transmission period is grant transmission and the terminal configures two power control loops, the terminal determines the number of the closed-loop control loop associated with the beam management reference signal of the downlink beam as the third parameter.
2. The method of claim 1, wherein the first correspondence is predetermined or configured by higher layer signaling of a base station; the second correspondence is configured by high level signaling of the base station.
3. A terminal for power control of an uplink physical shared channel, comprising:
a receiving unit, configured to receive a downlink control message sent by a base station;
a determining unit, configured to determine whether a serving cell where the terminal is located is a non-scheduled serving cell if it is determined that the sounding reference Signal Resource Indication (SRI) does not exist in the downlink control message, and if so, determine a transmission power of a Physical Uplink Shared Channel (PUSCH) according to a preconfigured default value; the preconfigured default values are used for confirming the default values of the target power and the path loss compensation factor of the first parameter, the default value of the second parameter and the third parameter; the default value of the pre-configuration is configured by a high-level parameter SRI-PUSCH Power Control-Mapping;
if not, determining the PUSCH power control parameter of the current transmission period at least according to the service type of the uplink physical shared channel (PUSCH) of the current transmission period; the PUSCH power control parameter is used for the terminal to determine the sending power of the PUSCH according to a preset algorithm;
the determining unit is specifically configured to:
determining a preset PUSCH target power and a preset path loss compensation factor corresponding to the service type of the PUSCH in the current transmission period according to the service type of the PUSCH in the current transmission period and the first corresponding relation; the first corresponding relation is the corresponding relation between the service type and the preset PUSCH target power and the path loss compensation factor; determining a first parameter corresponding to the PUSCH of the current transmission period according to a second corresponding relation, and a preset PUSCH target power and a preset path loss compensation factor corresponding to the service type of the PUSCH of the current transmission period; the second corresponding relation is a corresponding relation between the first parameter and a preset PUSCH target power and a preset path loss compensation factor;
if the service type of the PUSCH of the current transmission period is RACH Msg3 transmission, determining that the sequence number of the reference signal used for RACH Msg1 power configuration and for RACH Msg2 channel tracking compensation is the second parameter; or, if the service type of the PUSCH of the current transmission period is grant-based transmission, determining that the sequence number of the beam management reference signal in the downlink beam of the UL grant is detected as the second parameter;
if the service type of the PUSCH in the current transmission period is RACH Msg3 transmission, resetting the closed-loop power of the RACH Msg3 and determining the third parameter; wherein the closed loop power control of RACH Msg3 is reset based on the power setting of RACH Msg1 and the power control in RACH Msg 2; if the service type of the PUSCH of the current transmission period is grant transmission and the terminal configures two power control loops, the terminal determines the number of the closed-loop control loop associated with the beam management reference signal of the downlink beam as the third parameter.
4. The terminal of claim 3, wherein the first corresponding relationship is preset or configured by higher layer signaling of a base station; the second correspondence is configured by high level signaling of the base station.
5. An electronic device, comprising:
at least one processor; and the number of the first and second groups,
a transceiver and a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1 to 2.
6. A computer-readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 2.
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CN115694770B (en) * 2019-11-08 2023-10-31 中兴通讯股份有限公司 Method, electronic device, equipment and medium for determining transmission parameters
CN111901859A (en) * 2020-05-14 2020-11-06 中兴通讯股份有限公司 Power control method, device, service node, terminal and storage medium
CN112333697B (en) * 2020-10-28 2022-07-15 武汉虹旭信息技术有限责任公司 Decoding method and device for physical downlink shared channel in LTE
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