Power control method, UE, base station, parameter configuration method and control method

Abstract

The present application discloses a power control method, UE, base station, parameter configuration method and control method, including: receiving at least one configuration information, the configuration information includes at least one detection reference signal SRS resource set, the reference signal resource set includes at least one SRS resource, the SRS resource set is identified by an SRS resource set index, and the SRS resource is identified by a first SRS resource index; receiving at least one power control parameter set; receiving association one between the SRS resource set and the power control parameter, or receiving association two between the SRS and the power control parameter; determining the power control parameter of the SRS corresponding to the SRS resource according to the received configuration information, power control parameter set and association one or association two. The present application can flexibly support different power control requirements of various types of uplink detection signals.

Description

[0001] This application is a divisional application of the Chinese patent application with application number "201711148323.5", application date "November 17, 2017", and title "Power Control Method, UE, Base Station, Parameter Configuration Method and Control Method". Technical Field

[0002] The present invention relates to the field of wireless communication technology, and in particular to a power control method, user equipment (UE), a base station, a parameter configuration method and a control method. Background Art

[0003] 5G NR (New Radio) is an ongoing research project of 3GPP (3rd Generation Partnership Project), which defines a new wireless air interface standard based on orthogonal frequency division multiplexing (OFDM) and will become the basis of the next generation of mobile networks. As the fifth generation of mobile communication system, NR technology needs to support an unprecedented number of different types of application scenarios, and also needs to support traditional frequency bands, high frequency bands and beam modes at the same time, which brings great challenges to the design of power control.

[0004] 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, etc. In LTE, the uplink sounding reference signal (SRS) is sent by the user equipment to the base station and is used for uplink channel detection. Its transmit power control is closely related to the power control process of the physical uplink shared channel (PUSCH). The SRS in the NR multi-beam scenario must not only inherit the characteristics of the SRS of LTE, but also meet new requirements, such as uplink beam scanning. The uplink beam scanning process may have different stages, supporting different numbers of transmission and / or reception beam training, and the results of the beam scanning are used to determine the subsequent PUSCH, physical uplink control channel (PUCCH), and SRS transmission beams. At the same time, due to the time-varying characteristics of the wireless channel, during data transmission, the UE also needs to send SRS for channel detection or beam scanning. Therefore, in multi-beam scenarios, NR needs to support SRS with different needs, which has different requirements for power control mechanisms.

[0005] There is currently no effective solution for how to flexibly determine the power control parameters used by SRS for various NR requirements. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a power control method, UE, base station, parameter configuration method and control method, which can flexibly support different power control requirements of multiple SRSs.

[0007] In order to achieve the purpose of the present invention, the technical solution of the embodiment of the present invention is implemented as follows:

[0008] An embodiment of the present invention provides a power control method, including:

[0009] Receive at least one configuration information, the configuration information including at least one sounding reference signal SRS resource set, the sounding reference signal resource set including at least one sounding reference signal resource, the SRS resource set is identified by an SRS resource set index, and the SRS resource is identified by a first SRS resource index;

[0010] receiving at least one set of power control parameters;

[0011] receiving a first association between the SRS resource set and the power control parameter, or receiving a second association between the SRS and the power control parameter;

[0012] The power control parameter (ie, the transmission power parameter) of the SRS corresponding to the SRS resource is determined according to the received configuration information, the power control parameter set, and the association one or the association two.

[0013] Further, the power control parameter set includes at least one of the following: an open-loop power control parameter, a path loss measurement parameter, and a closed-loop power control parameter;

[0014] The open-loop power control parameter includes at least one of the following: target received power, power offset value, and path loss compensation factor;

[0015] The path loss measurement parameter includes at least one of the following: a reference signal resource type indication for path loss measurement, a reference signal resource indication for path loss measurement, and a processing rule for path loss values ​​of multiple reference signals for path loss measurement;

[0016] The closed-loop power control parameters include: a closed-loop power control process.

[0017] Further, the power control parameter set is a power control parameter set for SRS, and the association one includes at least one of the following:

[0018] Association of SRS resource set index with open loop power control parameters;

[0019] Association between SRS resource set index and path loss measurement parameters;

[0020] Association of SRS resource set index with closed-loop power control process;

[0021] The association of open-loop power control with closed-loop power control processes;

[0022] Correlation of path loss measurement parameters with the closed-loop power control process;

[0023] Correlation of open-loop power control with path loss measurement parameters;

[0024] Correlation of open-loop power control, path loss measurement parameters and closed-loop power control process.

[0025] Further, the power control parameter set is a power control parameter set for SRS, and the second association includes at least one of the following:

[0026] an association between a first SRS resource index and an open-loop power control parameter;

[0027] Association between the first SRS resource index and the path loss measurement parameter;

[0028] an association of a first SRS resource index with a closed-loop power control process;

[0029] The association of open-loop power control with closed-loop power control processes;

[0030] Correlation of path loss measurement parameters with the closed-loop power control process;

[0031] Correlation of open-loop power control with path loss measurement parameters;

[0032] Correlation of open-loop power control, path loss measurement parameters and closed-loop power control process.

[0033] Further, the association one or the association two is configured in radio resource control RRC signaling; and / or,

[0034] The association one or the association two is configured in a medium access control control element MAC CE; and / or,

[0035] The association one or the association two is configured in physical layer signaling;

[0036] According to the association relationship of association 1 or association 2, the first power control parameter of the SRS is obtained from the SRS resource set index or the first SRS resource index.

[0037] Further, the first power control parameter of the SRS is used as the power control parameter of the SRS.

[0038] Further, when at least one of the following conditions is met, the power control parameter set also includes a power control parameter set for a physical uplink shared channel PUSCH,

[0039] Condition 1: receiving information indicating that the SRS resource set and the PUSCH share power control parameters;

[0040] Condition 2: Information allowing the SRS resource set to share power control parameters with the PUSCH is received, and the predefined sharing conditions are met;

[0041] Condition three: the SRS resource set only contains open-loop power control parameter information.

[0042] Further, if the first condition indicates that the SRS shares the closed-loop power control process x of the PUSCH, the closed-loop power control parameters of the PUSCH associated with the closed-loop power control process x of the PUSCH are used as the second power control parameter set of the SRS.

[0043] Furthermore, the sharing condition refers to any combination of at least one of the following conditions:

[0044] When the application scenario is a non-beam scenario;

[0045] The SRS resource set is configured as aperiodic;

[0046] The SRS resource set is configured as semi-static;

[0047] The number of SRS resources in the SRS resource set is equal to 1;

[0048] The number of repetitions of the SRS resources in the SRS resource set is equal to 1;

[0049] The SRS resource set or the antenna resources associated with the SRS resource set match the antenna resources associated with the PUSCH;

[0050] All reference signal indexes associated with the SRS resource set or SRS resource are the same as the reference signal index associated with the power control parameter of the PUSCH;

[0051] The partial reference signal index associated with the SRS resource set or the SRS resource is the same as the reference signal index associated with the power control parameter of the PUSCH;

[0052] The reference signals indicated by all reference signal indices associated with the SRS resource set or SRS resource, and the reference signals indicated by the reference signal indices associated with the power control parameters of the PUSCH meet the channel characteristic assumption;

[0053] The reference signal indicated by the reference signal index associated with the SRS resource set or the SRS resource, and the reference signal indicated by the reference signal index associated with the power control parameter of the PUSCH meet the channel characteristic assumption;

[0054] The grant type of the SRS resource set or the SRS resource is the same as the grant type associated with the power control parameter of the PUSCH;

[0055] The SRS resource set or the reference signal index associated with the SRS resource is indicated by base station configuration information.

[0056] Further, receiving information 1 for determining a reference signal index of the SRS resource, the information 1 including at least one of the following indication modes: a base station transparent mode, a base station indicating in a quasi co-location QCL mode, and a base station indicating a sending mode;

[0057] Determine the reference signal index of the SRS resource.

[0058] Furthermore, the power control parameter set also includes a power control parameter set for PUSCH.

[0059] The second power control parameter set of the SRS is obtained by associating the preconfigured reference signal index with the power control parameter set of the PUSCH.

[0060] Further, the association between the preconfigured reference signal index and the power control parameter set of the PUSCH refers to at least one of the following:

[0061] The reference signal associated with the reference signal index and the reference signal associated with the PUSCH satisfy the channel characteristic assumption;

[0062] The reference signal index is the same as the reference signal index associated with the PUSCH.

[0063] Further, the power control parameter of the SRS is determined by using the first power control parameter of the SRS and the second power control parameter set of the SRS, including any one of the following:

[0064] Using an open-loop power control parameter in the first power control parameter of the SRS and a path loss measurement parameter and / or a closed-loop power control process in the second power control parameter set of the SRS as a power control parameter of the SRS;

[0065] The target receiving power parameter in the open-loop power control parameter in the first power control parameter of SRS and the path loss factor and / or path loss measurement parameter and / or closed-loop power control process in the open-loop power control parameter in the second power control parameter set of SRS are used as the power control parameters of SRS.

[0066] Further, if the first PUSCH power control parameter set obtained according to the association between the preconfigured reference signal index and the PUSCH power control parameter set is empty, the first power control parameter of the SRS is used as the power control parameter of the SRS.

[0067] Furthermore, the transmission powers of the SRSs occupying the multiple SRS resources in the same SRS resource set are the same or grouped the same.

[0068] Further, according to the preset number of cycles with the same transmission power, it is determined that the transmission powers of the SRSs of the multiple SRS resources occupying the same SRS resource set within the number of cycles are the same or grouped the same.

[0069] Furthermore, the power control parameters of the SRSs occupying the multiple SRS resources in the same SRS resource set are the same or grouped the same.

[0070] Further, according to the preset number of cycles with the same transmission power, it is determined that the power control parameters of the SRSs of the plurality of SRS resources occupying the same SRS resource set within the number of cycles are the same or are grouped the same.

[0071] Furthermore, the configuration information also includes the number of repeated transmissions of the SRS, and the control method further includes:

[0072] The power control parameter of the SRS is adjusted according to the number of repeated transmissions.

[0073] Furthermore, the control method further includes:

[0074] Using a power control parameter in a configuration parameter at a user equipment level as a power control parameter of the SRS;

[0075] Using a power control parameter in a cell-level configuration parameter as a power control parameter of the SRS;

[0076] Calculating the transmit power of the SRS using a power control parameter of a physical random access process;

[0077] The target power of the physical random access process is used as the target receiving power of the SRS, the path loss obtained by measuring the synchronization signal block is used as the path loss of the SRS, and the transmission power of the SRS is calculated.

[0078] The embodiment of the present invention further provides a power control method, including:

[0079] If the physical uplink shared channel and the physical uplink control channel meet at least one of the following conditions, the power control parameters and / or transmit beam resources of the physical uplink shared channel are used as the power control parameters and / or transmit beam resources of the physical uplink control channel:

[0080] When the physical uplink shared channel and the physical uplink control channel are in the same scheduling unit;

[0081] The physical uplink shared channel and the physical uplink control channel are frequency-divided;

[0082] The transmission beam of the physical uplink shared channel and the physical uplink control channel is the same;

[0083] The reference signal associated with the physical uplink shared channel and the reference signal associated with the physical uplink control channel satisfy the channel characteristic assumption.

[0084] The embodiment of the present invention also provides a parameter configuration method, including:

[0085] The base station configures a parameter X for the user equipment, where the configuration parameter X is used for antenna management control and / or for beam management control.

[0086] Furthermore, the configuration parameter X satisfies one of the following characteristics:

[0087] The configuration parameter X is a parameter for joint encoding of antenna management and beam management;

[0088] Antenna switching and beam management are different states of the configuration parameter X.

[0089] Furthermore, the configuration parameter X has at least one of the following states:

[0090] The antenna switching beam does not switch;

[0091] Antenna switching beam switching;

[0092] The beam-switching antenna does not switch;

[0093] Beam switching antenna switching;

[0094] The beam remains unchanged and the antenna does not switch;

[0095] Antenna switching;

[0096] Beam switching;

[0097] The beam remains unchanged.

[0098] Furthermore, the configurable state range of the configuration parameter X or whether the configuration parameter X is enabled is determined according to at least one of the following parameters:

[0099] Multiplexing method between SRS resources;

[0100] The number of SRS resources included in the SRS resource set;

[0101] The number of ports included in the SRS resource;

[0102] The minimum time interval between different SRS resources in the SRS resource set;

[0103] The configuration parameter X is a configuration parameter of an SRS resource, or a configuration parameter of an SRS resource set.

[0104] Further, the configuration parameter X is a joint coding parameter of at least two of the following information:

[0105] Antenna management information;

[0106] beam management information;

[0107] Information about the multiplexing method between SRS resources;

[0108] Information on the number of SRS resources included in the SRS resource set;

[0109] Information about the number of ports included in the SRS resource;

[0110] The minimum time interval between different SRS resources.

[0111] Furthermore, the beam management information includes at least one of the following information:

[0112] Beam switching;

[0113] The beam remains unchanged;

[0114] The antenna management information includes at least one of the following information:

[0115] The antenna remains unchanged;

[0116] Antenna switching.

[0117] Further, the configuration parameter X may be a configuration parameter of one of the following signals: a configuration parameter of an SRS resource, a configuration parameter of an SRS resource set, a configuration parameter of a PUCCH, or a configuration parameter of a PUSCH.

[0118] The embodiment of the present invention further provides a control method, including:

[0119] Within the same carrier, the power of the transmitted channel and / or signal is adjusted symbol by symbol to meet the following requirements:

[0120] The maximum power of the carrier is less than or equal to a preset single-carrier maximum power limit threshold, and the same type of channels and / or signals between multiple symbols in the same time slot maintain the same non-zero power or non-zero power spectral density.

[0121] The embodiment of the present invention further provides a control method, including:

[0122] Within multiple carriers, the power of the transmitted channels and / or signals is adjusted symbol by symbol to meet:

[0123] The maximum power of multiple carriers is less than or equal to a preset multi-carrier maximum power limit threshold, and the same type of channels and / or signals between multiple symbols in the same time slot in the same carrier maintain the same non-zero power or non-zero power spectral density.

[0124] An embodiment of the present invention further provides a user equipment, including a processor, a memory and a communication bus;

[0125] The communication bus is used to realize the connection and communication between the processor and the memory;

[0126] The processor is used to execute the uplink power control program stored in the memory to implement the following steps:

[0127] Receive at least one configuration information, the configuration information including at least one sounding reference signal SRS resource set, the sounding reference signal resource set including at least one sounding reference signal resource, the SRS resource set is identified by an SRS resource set index, and the SRS resource is identified by a first SRS resource index;

[0128] receiving at least one set of power control parameters;

[0129] receiving a first association between the SRS resource set and the power control parameter, or receiving a second association between the SRS and the power control parameter;

[0130] The power control parameter of the SRS corresponding to the SRS resource is determined according to the received configuration information, the power control parameter set, and association one or association two.

[0131] An embodiment of the present invention further provides a base station, including a processor, a memory and a communication bus;

[0132] The communication bus is used to realize the connection and communication between the processor and the memory;

[0133] The processor is used to execute the uplink power control program stored in the memory to implement the following steps:

[0134] Configure at least one configuration information, the configuration information including at least one sounding reference signal SRS resource set, the sounding reference signal resource set including at least one sounding reference signal resource, the SRS resource set is identified by an SRS resource set index, and the SRS resource is identified by a first SRS resource index;

[0135] configuring at least one power control parameter set;

[0136] configuring an association first between the SRS resource set and the power control parameter, or an association second between the SRS and the power control parameter;

[0137] According to the configuration information, the power control parameter set and the association one or the association two, and according to the configuration, a scheduling indication of the SRS is sent to the user equipment.

[0138] The embodiment of the present invention further provides a power control method, including:

[0139] Configure at least one configuration information, the configuration information including at least one sounding reference signal SRS resource set, the sounding reference signal resource set including at least one sounding reference signal resource, the SRS resource set is identified by an SRS resource set index, and the SRS resource is identified by a first SRS resource index;

[0140] configuring at least one power control parameter set;

[0141] Configure an association one between the SRS resource set and the power control parameter, or receive an association two between the SRS and the power control parameter.

[0142] Further, the power control parameter set includes at least one of the following: an open-loop power control parameter, a path loss measurement parameter, and a closed-loop power control parameter;

[0143] The open-loop power control parameter includes at least one of the following: target received power, power offset value, and path loss compensation factor;

[0144] The path loss measurement parameter includes at least one of the following: a reference signal resource type indication for path loss measurement, a reference signal resource indication for path loss measurement, and a processing rule for path loss values ​​of multiple reference signals for path loss measurement;

[0145] The closed-loop power control parameters include: a closed-loop power control process.

[0146] Further, the power control parameter set is a power control parameter set for SRS, and the association one includes at least one of the following:

[0147] Association of SRS resource set index with open loop power control parameters;

[0148] Association between SRS resource set index and path loss measurement parameters;

[0149] Association of SRS resource set index with closed-loop power control process;

[0150] The association of open-loop power control with closed-loop power control processes;

[0151] Correlation of path loss measurement parameters with the closed-loop power control process;

[0152] Correlation of open loop power control with path loss measurement parameters.

[0153] Further, the power control parameter set is a power control parameter set for SRS, and the second association includes at least one of the following:

[0154] an association between a first SRS resource index and an open-loop power control parameter;

[0155] Association between the first SRS resource index and the path loss measurement parameter;

[0156] an association of a first SRS resource index with a closed-loop power control process;

[0157] The association of open-loop power control with closed-loop power control processes;

[0158] Correlation of path loss measurement parameters with the closed-loop power control process;

[0159] Correlation of open loop power control with path loss measurement parameters.

[0160] Further, the association one or the association two is configured in radio resource control RRC signaling; and / or,

[0161] The association one or the association two is configured in a medium access control control element MAC CE; and / or,

[0162] The association one or the association two is configured in the physical layer signaling.

[0163] Further, when at least one of the following conditions is met, the power control parameter set also includes a power control parameter set for a physical uplink shared channel PUSCH,

[0164] Condition 1: Information indicating that the SRS resource set and PUSCH share power control parameters is configured;

[0165] Condition 2: Information that allows the SRS resource set to share power control parameters with the PUSCH is configured, and the predefined sharing conditions are met;

[0166] Condition three: The SRS resource set only has open-loop power control parameter information.

[0167] Furthermore, the sharing condition refers to any combination of at least one of the following conditions:

[0168] When the application scenario is a non-beam scenario;

[0169] The SRS resource set is configured as aperiodic;

[0170] The SRS resource set is configured as semi-static;

[0171] The number of SRS resources in the SRS resource set is equal to 1;

[0172] The number of repetitions of the SRS resources in the SRS resource set is equal to 1;

[0173] The SRS resource set or the antenna resources associated with the SRS resource set match the antenna resources associated with the physical uplink shared channel;

[0174] The beam resource indication information associated with the SRS resource set or the SRS resource is identical to or matches part or all of the beam resource indication information associated with the power control parameter of the physical uplink shared channel;

[0175] The grant type of the SRS resource set or the SRS resource is the same as the grant type associated with the power control parameter of the physical uplink shared channel;

[0176] The beam resource information associated with the SRS resource set or the SRS resource is indicated by configuration information.

[0177] Furthermore, information one is configured for determining a reference signal index of the SRS resource, wherein the information one includes at least one of the following indication methods: a base station transparent method, a base station indication in a quasi-co-site QCL method, and a base station indication sending method.

[0178] Furthermore, the power control parameter set also includes a power control parameter set for PUSCH.

[0179] Furthermore, the configuration information also includes the number of repeated transmissions of the SRS.

[0180] The technical solution of the present invention has the following beneficial effects:

[0181] The power control method, UE, base station, parameter configuration method and control method provided by the present invention determine the power control parameters of the SRS according to the configuration information of the base station, adopt a unified architecture to determine the transmission power for different types of SRS in a multi-beam scenario, and then flexibly support the different power control requirements of multiple SRS with reasonable overhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0182] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0183] Figure 1 A schematic flow chart of a power control method according to a first embodiment of the present invention;

[0184] Figure 2 A schematic flow chart of a power control method according to a second embodiment of the present invention;

[0185] Figure 3 A schematic flow chart of a power control method according to a third embodiment of the present invention;

[0186] Figure 4 A schematic diagram of the structure of a user equipment according to an embodiment of the present invention;

[0187] Figure 5 A schematic diagram of the structure of a base station according to an embodiment of the present invention;

[0188] Figure 6 A schematic diagram of an antenna radio frequency weighting factor according to an embodiment of the present invention;

[0189] Figure 7 A schematic diagram of frequency division multiplexing of a long PUCCH (L-PUCCH) and a PUSCH according to an embodiment of the present invention;

[0190] Figure 8 The diagram is a schematic diagram of time-frequency resources allocated to each channel of a symbol in a time slot according to an embodiment of the present invention. DETAILED DESCRIPTION

[0191] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0192] In wireless communication systems, in order to reduce the power consumption of the transmitting device and reduce the interference caused by unnecessary high-power transmission to other transmissions, it is necessary to control the transmission power. Factors such as the size of the communication range, the maximum transmission power and receiving sensitivity of the transceiver equipment of both parties in communication, the modulation and coding method and rate of the data, the working frequency band, and the bandwidth occupied by the transmission will affect the transmission power. Generally, it is necessary to use a lower transmission power as much as possible while meeting the receiving signal quality requirements of the receiving end.

[0193] In general communication technology, communication node 1 sends a reference signal, and communication node 2 measures the path loss (PL) from node 1 to node 2 based on the reference signal. PL is the power of the reference signal received by node 2 using the transmission power of node 1's reference signal. Node 2 assumes that the PL of the transmission channel from node 2 to node 1 is the same as the PL of the channel from node 1 to node 2, and sets the transmission power so that the received power at the receiving end can meet the reception requirements. Since PL is the result of unilateral measurement, this factor belongs to the open-loop part in the transmission power. After receiving the transmission, node 2 analyzes it and provides power adjustment information to node 1 based on the quality of reception. This process belongs to closed-loop power control.

[0194] In LTE, the link from the base station to the terminal is the downlink, and the link from the terminal to the base station is the uplink. The power of the downlink is determined by the base station based on the channel measurement results of each scheduled UE and the scheduling algorithm. The power control of the uplink is an open-loop combined with a closed-loop method, in which the power control factor determined by the UE measurement belongs to the open-loop part, and the power control factor measured by the base station and fed back to the UE belongs to the closed-loop part. In addition, there are specific quantities related to transmission, such as the transmission rate, MCS level, transmission bandwidth, etc., which also affect the power.

[0195] The following is the calculation formula for the transmit power of LTE's PUSCH, which is used as an example to explain the various parameters that affect the power. PUCCH also has similar parameters and mechanisms.

[0196]

[0197] In the above formula, the subscript c refers to the cell. Each component carrier (CC) that supports the carrier aggregation (CA) function corresponds to one cell. From the above formula, it can be seen that each parameter in the power calculation formula is cell-configured / calculated. All descriptions in this article are for one CC, so there is no specific mention of the cell. It should be pointed out that all parameters in this article can be extended to multiple CCs. It is only necessary to configure the power-related configuration and calculation parameters for each CC independently.

[0198] The open-loop part of the uplink transmission power of PUSCH is determined by the target received power PO_PUSCH, the path loss PL and the path loss factor α. The target received 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 closed-loop power control adjustment amount according to the difference between the measurement result and the target, and transmits the power control command (TPC Command, Transmit Power Control Command, i.e., δ for PUSCH in DCI) to adjust the power of the PUSCH. PUSCH and δ for PUCCH PUCCH ) is notified to the UE. The UE maintains a local power adjustment value f(i), which is updated according to the transmission power control command, and the above formula is used to achieve the purpose of closed-loop power control. Where i is the subframe number. ΔTF is the MCS-related power offset, PCMAX is the maximum power limit of the UE, and MPUSCH is the number of RBs (resource blocks) occupied by PUSCH.

[0199] The cell-level target received power P0_nominal of LTE is used to distinguish between PUSCH (semi-static, dynamic, MSG3) and PUCCH, corresponding to different BLER requirements. The UE-level target received power parameter P0_UE_specific is also set to distinguish between the above items. Its function is to compensate for systematic deviations, such as PL estimation error and absolute output power setting error.

[0200] There are two ways to update f(i) according to the transmission power control command: cumulative method and absolute value method. The absolute value method directly uses the transmission power control command sent by the base station to update the UE's local power adjustment amount f(i), while the cumulative method uses the transmission power control command sent by the base station and the historical value of the UE's local power adjustment amount to jointly determine the UE's local power adjustment amount f(i).

[0201] It should be noted that f(i) here represents the UE-local closed-loop power adjustment amount. In LTE, the UE-local closed-loop power adjustment amount of PUCCH is denoted as g(i). In this article, f(i) can also be applied to PUCCH, and its role in the power control process is similar to that applied to PUSCH.

[0202] 5G technology introduces the transmission mode of beams, and both base stations and UEs support multiple beams. When working in beam mode, the power calculation needs to take into account the characteristics of the beam. The present invention proposes a power control method for multiple beams. The various parameters mentioned in the present invention are applicable to different channels, such as PUSCH, long PUSCH, short PUSCH, PUCCH, long PUCCH, short PUCCH and signal SRS. Parameters of the same type can be configured independently or in combination when applied to the above-mentioned channels or signals. The meaning of combined configuration is that different channels and signals can share the same value, and which different channels and signals can share the same value is determined by a predefined method or a base station configuration method.

[0203] The description of the preferred embodiments of the present invention uses a variety of beam-related concepts, which are explained as follows for ease of understanding:

[0204] The sending mode includes at least one of the following: a sending beam, a sending port, a sending resource, a reference signal sequence, a sending precoding matrix (analog, digital, or hybrid), a synchronization signal resource indication, and a reference signal resource indication. Among them, the reference signal resource indication includes an uplink and / or downlink reference signal resource indication. The sending mode determined by the synchronization signal resource indication and the downlink reference signal resource indication refers to a receiving mode corresponding to the indicated synchronization signal resource or downlink reference signal resource (for example, the best receiving performance, the smallest PL, and the largest RSRP) using uplink and downlink reciprocity or uplink and downlink reference signal association to obtain an uplink sending mode, such as a sending beam, a sending port, etc. The sending mode determined by the uplink reference signal resource indication refers to a sending mode that uses the same uplink reference signal as indicated, such as a sending beam, a sending port, etc.

[0205] The receiving mode includes at least one of the following: receiving beam, receiving port, receiving resource, reference signal sequence, receiving precoding matrix (analog, digital, hybrid mode), receiver algorithm. , synchronization signal resource indication, reference signal resource indication. Among them, the reference signal resource indication includes uplink and / or downlink reference signal resource indication. The sending mode determined by the synchronization signal resource indication and the downlink reference signal resource indication refers to a certain receiving mode (for example, the best receiving performance, the smallest PL, the largest RSRP) corresponding to the synchronization signal resource or the downlink reference signal resource indicated by the receiving indication, such as a receiving beam, a receiving port, etc. The receiving mode determined by the uplink reference signal resource indication refers to a downlink receiving mode obtained by using the uplink and downlink reciprocity or the uplink and downlink reference signal association using the same sending mode as the indicated uplink reference signal.

[0206] The beam can be a resource (such as transmitting end precoding, receiving end precoding, antenna port, antenna weight vector, antenna weight matrix, etc.), and the beam number can be replaced by a resource index, because the beam can be bound to some time-frequency code resources for transmission. The beam can also be a transmission (sending / receiving) mode; the transmission mode can include space division multiplexing, frequency domain / time domain diversity, etc.

[0207] The beam indication means that the transmitting end can indicate by using the current reference signal and antenna port, and the reference signal (or reference signal) and antenna port scanned by the base station or reported by the UE feedback to meet the quasi co-location (QCL) assumption.

[0208] The receiving beam refers to a beam of a receiving end that does not need to be indicated, or a beam resource of a receiving end indicated by a quasi-co-location (QCL) of a reference signal (or reference signal) and an antenna port scanned by a base station or reported by a UE through a current reference signal and an antenna port;

[0209] The channel characteristics include physical propagation channel characteristics, such as horizontal transmission azimuth, vertical transmission azimuth, horizontal reception azimuth, vertical reception azimuth, etc., and also include characteristics of radio frequency and baseband circuits, such as antenna element pattern, antenna group, antenna plane, antenna subarray, transceiver unit (TXRU), receiving beam set, antenna placement, and baseband time deviation, frequency deviation and phase noise, etc.;

[0210] The parameters involved in the quasi-co-location (QCL) include at least Doppler spread, Doppler shift, delay spread, average delay and average gain; and may also include spatial parameter information, such as arrival angle, spatial correlation of receiving beam, average delay, correlation of time-frequency channel response (including phase information).

[0211] The uplink and downlink reference signal association means that the spatial parameter characteristics of the uplink (downlink) reference signal can be determined by the spatial parameter characteristics of the channel experienced by the downlink (uplink) reference signal. It is also called satisfying the QCL assumption, or satisfying the spatial reciprocity QCL assumption. Specifically, the uplink reference signal transmit beam can be determined by the receive beam corresponding to the downlink reference signal; the downlink reference signal transmit beam can be determined by the receive beam corresponding to the uplink reference signal; the uplink reference signal receive beam can be determined by the transmit beam corresponding to the downlink reference signal; the downlink reference signal receive beam can be determined by the transmit beam corresponding to the uplink reference signal.

[0212] In the embodiments of the present invention, for the convenience of description, base stations and UE (user equipment) are used for description, but this is not intended to limit the present invention. During implementation, base stations and UEs may be replaced by the names of various communication nodes such as NB (NodeB), gNB, TRP (transmitter receiver point), AP (access point), site, user, STA, relay, terminal, etc.

[0213] The beam (group) in the preferred embodiment of the present invention means beam or beam group.

[0214] like Figure 1 As shown, a power control method according to the present invention comprises the following steps:

[0215] Step 101: receiving at least one configuration information, the configuration information including at least one sounding reference signal SRS resource set, the sounding reference signal resource set including at least one sounding reference signal resource, the SRS resource set being identified by an SRS resource set index ID, and the SRS resource being identified by a first SRS resource index; receiving at least one power control parameter set; receiving an association one between the SRS resource set and the power control parameter, or receiving an association two between the SRS and the power control parameter;

[0216] Step 102: Determine the power control parameter of the SRS corresponding to the SRS resource according to the received configuration information, the power control parameter set, and association one or association two.

[0217] like Figure 2 As shown, a power control method according to the present invention comprises the following steps:

[0218] Step 201: The user equipment receives configuration information from a base station, wherein the configuration information includes at least one SRS resource set, wherein the SRS resource set includes at least one SRS resource, wherein the SRS resource is used to indicate resources occupied by the SRS, and receives an association relationship between the SRS resource set or the SRS resource and beam resource indication information from the base station, wherein the beam resource indication information is used to indicate a beam identifier of a transmitting beam;

[0219] Furthermore, the configuration information is carried in any of the following types of messages:

[0220] Radio resource control messages, MAC control unit messages, physical layer signaling.

[0221] Furthermore, each SRS resource set includes at least one power control parameter set, and the power control parameter set includes J sets of SRS open-loop power control parameters, K sets of SRS path loss measurement parameters, and L sets of SRS closed-loop power control parameters, where J is an integer greater than or equal to 1, K is an integer greater than or equal to 0, and L is an integer greater than or equal to 0.

[0222] Specifically, the open-loop power control parameter includes at least one of the following:

[0223] Target received power, power offset value, and path loss compensation factor;

[0224] The path loss measurement parameters include at least one of the following:

[0225] A resource indication of at least one downlink reference signal used for path loss measurement, and a processing rule for a path loss value measured by the downlink reference signal;

[0226] The closed-loop power control parameters include: closed-loop power adjustment amount.

[0227] Further, the downlink reference signal includes any one of the following or any combination thereof:

[0228] The designated channel state information reference signal, the auxiliary synchronization signal in the synchronization signal, the demodulation reference signal of the primary broadcast channel in the synchronization signal, and the designated tracking reference signal.

[0229] Furthermore, the processing rule of the path loss value measured by the downlink reference signal specifically includes:

[0230] The path loss value measured by the downlink reference signal is compared with a preset path loss threshold value, and the path loss values ​​smaller than the path loss threshold value are weighted averaged according to a preset weight value to obtain the path loss value of the SRS.

[0231] Step 202: The user equipment determines the transmission beam and power control parameters of the SRS according to the configuration information and the association relationship.

[0232] Further, when determining the power control parameters of the SRS, if the SRS resource satisfies any one of the following conditions or any combination of any two or more conditions:

[0233] The SRS resource set is configured as aperiodic;

[0234] The SRS resource set is configured as semi-static;

[0235] The number of SRS resources in the SRS resource set is equal to 1;

[0236] The number of SRS resource repetitions in the SRS resource set is equal to 1;

[0237] The beam resource indication information associated with the SRS resource set or the SRS resource is the same as part or all of the beam resource indication information associated with the power control parameter of the physical uplink shared channel;

[0238] The beam resource indication information associated with the SRS resource set or the SRS resource, and part or all of the beam resource indication information associated with the power control parameter of the physical uplink shared channel satisfy a predefined quasi-co-location relationship;

[0239] The grant type of the SRS resource set or the SRS resource is the same as the grant type associated with the power control parameter of the physical uplink shared channel;

[0240] The control method further includes: using the power control parameter of the physical uplink shared channel to replace the power control parameter in the SRS resource set.

[0241] Further, the step of replacing the power control parameter in the SRS resource set with the power control parameter of the physical uplink shared channel specifically includes any one of the following:

[0242] replacing all power control parameters in the SRS resource set with all power control parameters of the physical uplink shared channel associated with the SRS resource set or the beam resource indication information associated with the SRS resource; or,

[0243] Replacing some power control parameters in the SRS resource set with some power control parameters of the physical uplink shared channel associated with the SRS resource set or the beam resource indication information associated with the SRS resource; or,

[0244] replacing all power control parameters in the SRS resource set with all power control parameters of the physical uplink shared channel associated with the SRS resource set or the grant type associated with the SRS resource; or,

[0245] The partial power control parameters in the SRS resource set are replaced by partial power control parameters of the physical uplink shared channel associated with the SRS resource set or the grant type associated with the SRS resource.

[0246] Further, the step of replacing the power control parameter in the SRS resource set with the power control parameter of the physical uplink shared channel specifically includes any one of the following:

[0247] The target received power in the SRS resource set is replaced by the sum of the target received power of the physical uplink shared channel and the power offset value in the SRS resource set;

[0248] The path loss compensation factor in the SRS resource set is replaced by the path loss compensation factor of the physical uplink shared channel;

[0249] The reference signal resource indication for path loss estimation configured for the SRS is replaced by the reference signal resource indication for path loss estimation configured for the physical uplink shared channel;

[0250] The closed-loop power adjustment amount configured for the SRS is replaced by the closed-loop power adjustment amount configured for the physical uplink shared channel.

[0251] Further, when the SRS resource set includes multiple power offset values, the correspondence between the power offset value and the SRS category is pre-defined by the base station and the user equipment or indicated by the base station in the configuration information, and the control method further includes:

[0252] The user equipment determines to use one or more power offset values ​​in the SRS resource set according to the category of the SRS.

[0253] Furthermore, the control method further includes:

[0254] An association relationship between a power control parameter set of an SRS received by a user equipment from a base station and an SRS resource set or an SRS resource;

[0255] The user equipment determines the power control parameter of the SRS according to the association relationship between the power control parameter set and the SRS resource set or the SRS resource.

[0256] Furthermore, the configuration information also includes an indication from the base station to the user equipment, where the indication is used to indicate whether the user equipment uses part or all of the power control parameters of the physical uplink shared channel as part or all of the power control parameters in the SRS resource set;

[0257] The control method further comprises:

[0258] According to the indication, the user equipment uses part or all of the power control parameters of the physical uplink shared channel as part or all of the power control parameters in the SRS resource set.

[0259] Further, when each SRS resource set does not include a power control parameter set, the control method further includes:

[0260] The user equipment determines the SRS power control parameter using any of the following:

[0261] The user equipment uses the power control parameter in the user equipment level configuration parameter from the base station as the power control parameter of the SRS;

[0262] The user equipment uses the power control parameter in the cell-level configuration parameter from the base station as the power control parameter of the SRS;

[0263] The user equipment uses the final transmit power of the physical random access process as the transmit power of the SRS;

[0264] The user equipment uses the target power of the physical random access process as the target received power of the SRS, measures the path loss obtained by the synchronization signal block as the path loss of the SRS, and calculates the transmit power of the SRS.

[0265] In an embodiment of the present invention, the power control parameters of the SRSs occupying multiple SRS resources in the same SRS resource set determined by the user equipment are the same.

[0266] In an embodiment of the present invention, the user equipment determines, based on a preset number of cycles for maintaining the same transmission power, that the power control parameters of the SRSs of the plurality of SRS resources occupying the same SRS resource set within the number of cycles are the same.

[0267] Further, when the configuration information also includes the number of repeated transmissions of the SRS, the control method further includes:

[0268] The user equipment adjusts the power control parameter of the SRS according to the number of repeated transmissions.

[0269] The embodiment of the present invention also provides a power control method, comprising the following steps:

[0270] If the physical uplink shared channel and the physical uplink control channel meet any one of the following conditions or any combination of any two or more of the following conditions, the power control parameters and / or transmit beam resources of the physical uplink shared channel are used instead of the power control parameters and / or transmit beam resources of the physical uplink control channel:

[0271] When the physical uplink shared channel and the physical uplink control channel are in the same scheduling unit;

[0272] The physical uplink shared channel and the physical uplink control channel are frequency-divided;

[0273] The transmission beam of the physical uplink shared channel and the physical uplink control channel is the same;

[0274] The transmission beams of the physical uplink shared channel and the physical uplink control channel satisfy a predefined quasi-co-location relationship.

[0275] like Figure 3 As shown, the embodiment of the present invention also provides a power control method, comprising the following steps:

[0276] Step 301: The base station configures at least one SRS resource set for the user equipment, wherein the SRS resource set includes at least one SRS resource, and the SRS resource is used to indicate the resources occupied by the SRS, and configures an association relationship between the SRS resource set or the SRS resource and beam resource indication information, wherein the beam resource indication information is used to indicate the beam identifier of the transmitting beam;

[0277] Furthermore, each SRS resource set includes at least one power control parameter set, and the power control parameter set includes J sets of SRS open-loop power control parameters, K sets of SRS path loss measurement parameters, and L sets of SRS closed-loop power control parameters, where J is an integer greater than or equal to 1, K is an integer greater than or equal to 0, and L is an integer greater than or equal to 0.

[0278] Specifically, the open-loop power control parameter includes at least one of the following:

[0279] Target received power, power offset value, and path loss compensation factor;

[0280] The path loss measurement parameters include at least one of the following:

[0281] A resource indication of at least one downlink reference signal used for path loss measurement, and a processing rule for a path loss value measured by the downlink reference signal;

[0282] The closed-loop power control parameters include: closed-loop power adjustment amount.

[0283] Further, the downlink reference signal includes any one of the following or any combination thereof:

[0284] The designated channel state information reference signal, the auxiliary synchronization signal in the synchronization signal, the demodulation reference signal of the primary broadcast channel in the synchronization signal, and the designated tracking reference signal.

[0285] Furthermore, the processing rule of the path loss value measured by the downlink reference signal specifically includes:

[0286] The path loss value measured by the downlink reference signal is compared with a preset path loss threshold value, and the path loss values ​​smaller than the path loss threshold value are weighted averaged according to a preset weight value to obtain the path loss value of the SRS.

[0287] Furthermore, the configuration information includes any of the following types of messages:

[0288] Radio resource control messages, MAC control unit messages, physical layer signaling.

[0289] Furthermore, the SRS resource set also includes multiple power offset values, and the corresponding relationship between the power offset value and the SRS category is pre-defined by the base station and the user equipment or indicated by the base station.

[0290] It should be noted that, when the user equipment receives the correspondence between the power offset value and the category of the SRS, it determines to use one or more power offset values ​​in the SRS resource set according to the category of the SRS.

[0291] Furthermore, the SRS resource set also includes an association relationship between an SRS power control parameter set and an SRS resource set or an SRS resource.

[0292] It should be noted that when the user equipment receives the association relationship between the SRS power control parameter set and the SRS resource set or SRS resource, it determines the SRS power control parameter according to the association relationship between the power control parameter set and the SRS resource set or SRS resource.

[0293] Furthermore, the control method further comprises: the base station instructs the user equipment whether to use part or all of the power control parameters of the physical uplink shared channel as part or all of the power control parameters in the SRS resource set.

[0294] It should be noted that, when the user equipment receives the indication, the user equipment uses part or all of the power control parameters of the physical uplink shared channel as part or all of the power control parameters in the SRS resource set according to the indication.

[0295] Furthermore, the SRS resource set also includes the number of repeated transmissions of the SRS.

[0296] It should be noted that, when the user equipment receives the number of repeated transmissions of the SRS, the user equipment adjusts the power control parameter of the SRS according to the number of repeated transmissions.

[0297] Step 302: The base station sends an SRS scheduling indication to the user equipment according to the configuration.

[0298] An embodiment of the present invention further provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps of the power control method as described in any one of the above items.

[0299] like Figure 4 As shown, the embodiment of the present invention further provides a user equipment, including a receiving unit 401 and a determining unit 402, wherein:

[0300] A receiving unit 401 is configured to receive configuration information from a base station, where the configuration information includes at least one SRS resource set, where the SRS resource set includes at least one SRS resource, where the SRS resource is used to indicate resources occupied by the SRS, and receive an association relationship between the SRS resource set or the SRS resource and beam resource indication information from the base station, where the beam resource indication information is used to indicate a beam identifier of a transmitting beam;

[0301] The determination unit 402 is used to determine the transmission beam and power control parameters of the SRS according to the configuration information.

[0302] Furthermore, the SRS resource set also includes at least one power control parameter set, and the power control parameter set includes J sets of SRS open-loop power control parameters, K sets of SRS path loss measurement parameters, and L sets of SRS closed-loop power control parameters, wherein J is an integer greater than or equal to 1, K is an integer greater than or equal to 0, and L is an integer greater than or equal to 0.

[0303] Specifically, the open-loop power control parameter includes at least one of the following:

[0304] Target received power, power offset value, and path loss compensation factor;

[0305] The path loss measurement parameters include at least one of the following:

[0306] A resource indication of at least one downlink reference signal used for path loss measurement, and a processing rule for a path loss value measured by the downlink reference signal;

[0307] The closed-loop power control parameters include: closed-loop power adjustment amount.

[0308] Further, the downlink reference signal includes any one of the following or any combination thereof:

[0309] The designated channel state information reference signal, the auxiliary synchronization signal in the synchronization signal, the demodulation reference signal of the primary broadcast channel in the synchronization signal, and the designated tracking reference signal.

[0310] Furthermore, the processing rule of the path loss value measured by the downlink reference signal specifically includes:

[0311] The path loss value measured by the downlink reference signal is compared with the preset path loss threshold value, and the path loss values ​​smaller than the path loss threshold value are weighted averaged according to the preset weight value to obtain the path loss value of the SRS.

[0312] Furthermore, the configuration information includes any of the following types of messages:

[0313] Radio resource control messages, MAC control unit messages, physical layer signaling.

[0314] Further, the determining unit 402 determines the power control parameter of the SRS, specifically including:

[0315] When determining the power control parameters of the SRS, if the SRS resource meets any one of the following conditions or any combination of any two or more of the following conditions, the power control parameters of the physical uplink shared channel are used instead of the power control parameters in the SRS resource set:

[0316] The SRS resource set is configured as aperiodic;

[0317] The SRS resource set is configured as semi-static;

[0318] The number of SRS resources in the SRS resource set is equal to 1;

[0319] The number of SRS resource repetitions in the SRS resource set is equal to 1;

[0320] The beam resource indication information associated with the SRS resource set or the SRS resource is the same as part or all of the beam resource indication information associated with the power control parameter of the physical uplink shared channel;

[0321] The beam resource indication information associated with the SRS resource set or the SRS resource, and part or all of the beam resource indication information associated with the power control parameter of the physical uplink shared channel satisfy a predefined quasi-co-location relationship;

[0322] The grant type of the SRS resource set or the SRS resource is the same as the grant type associated with the power control parameter of the physical uplink shared channel.

[0323] Further, the power control parameter of the physical uplink shared channel is used to replace the power control parameter in the SRS resource set, which specifically includes any one of the following:

[0324] replacing all power control parameters in the SRS resource set with all power control parameters of the physical uplink shared channel associated with the SRS resource set or the beam resource indication information associated with the SRS resource; or,

[0325] Replacing some power control parameters in the SRS resource set with some power control parameters of the physical uplink shared channel associated with the SRS resource set or the beam resource indication information associated with the SRS resource; or,

[0326] replacing all power control parameters in the SRS resource set with all power control parameters of the physical uplink shared channel associated with the SRS resource set or the grant type associated with the SRS resource; or,

[0327] The partial power control parameters in the SRS resource set are replaced by partial power control parameters of the physical uplink shared channel associated with the SRS resource set or the grant type associated with the SRS resource.

[0328] Further, the power control parameter of the physical uplink shared channel is used to replace the power control parameter in the SRS resource set, which specifically includes any one of the following:

[0329] The target received power in the SRS resource set is replaced by the sum of the target received power of the physical uplink shared channel and the power offset value in the SRS resource set;

[0330] Replace the path loss compensation factor in the SRS resource set with the path loss compensation factor of the physical uplink shared channel;

[0331] The reference signal resource indication for path loss estimation configured for the SRS is replaced by the reference signal resource indication for path loss estimation configured for the physical uplink shared channel;

[0332] The closed-loop power adjustment amount configured for the SRS is replaced by the closed-loop power adjustment amount configured for the physical uplink shared channel.

[0333] Further, the determining unit 402 determines the power control parameter of the SRS, specifically including:

[0334] When the SRS resource set includes multiple power offset values, the corresponding relationship between the power offset value and the SRS category is pre-defined by the base station and the user equipment or indicated by the base station in the configuration information.

[0335] The user equipment determines to use one or more power offset values ​​in the SRS resource set according to the category of the SRS.

[0336] Further, the determining unit 402 determines the power control parameter of the SRS, specifically including:

[0337] An association relationship between a power control parameter set of an SRS received by the user equipment from the base station and the SRS resource set or the SRS resource;

[0338] The user equipment determines the power control parameter of the SRS according to the association relationship between the power control parameter set and the SRS resource set or the SRS resource.

[0339] Further, the determining unit 402 determines the power control parameter of the SRS, specifically including:

[0340] The configuration information also includes an indication from the base station to the user equipment, where the indication is used to indicate whether the user equipment uses part or all of the power control parameters of the physical uplink shared channel as part or all of the power control parameters in the SRS resource set;

[0341] According to the indication, the user equipment uses part or all of the power control parameters of the physical uplink shared channel as part or all of the power control parameters in the SRS resource set.

[0342] Further, the determining unit 402 determines the power control parameter of the SRS, specifically including:

[0343] When each SRS resource set does not include a power control parameter set, the user equipment determines the power control parameter of the SRS using any one of the following:

[0344] The user equipment uses the power control parameter in the user equipment level configuration parameter from the base station as the power control parameter of the SRS;

[0345] The user equipment uses the power control parameter in the cell-level configuration parameter from the base station as the power control parameter of the SRS;

[0346] The user equipment uses the final transmit power of the physical random access process as the transmit power of the SRS;

[0347] The user equipment uses the target power of the physical random access process as the target received power of the SRS, measures the path loss obtained by the synchronization signal block as the path loss of the SRS, and calculates the transmit power of the SRS.

[0348] In an embodiment of the present invention, the power control parameters of the SRSs occupying multiple SRS resources in the same SRS resource set determined by the determining unit 402 are the same.

[0349] In an embodiment of the present invention, the determining unit 402 determines that the power control parameters of the SRSs of the multiple SRS resources occupying the same SRS resource set within the preset number of cycles for maintaining the same transmission power are the same.

[0350] Furthermore, the configuration information also includes the number of repeated transmissions of the SRS;

[0351] The determining unit 402 is further configured to:

[0352] The user equipment adjusts the power control parameter of the SRS according to the number of repeated transmissions.

[0353] like Figure 5 As shown, the embodiment of the present invention further provides a base station, including a configuration unit 501 and a scheduling unit 502, wherein:

[0354] A configuration unit 501 is used to configure at least one SRS resource set for a user equipment, where the SRS resource set includes at least one SRS resource, where the SRS resource indicates a resource occupied by the SRS, and configure an association relationship between the SRS resource set or the SRS resource and beam resource indication information, where the beam resource indication information is used to indicate a beam identifier of a transmitting beam;

[0355] The scheduling unit 502 is configured to send a scheduling indication of the SRS to the user equipment according to the configuration.

[0356] Furthermore, each SRS resource set includes at least one power control parameter set, and the power control parameter set includes J sets of SRS open-loop power control parameters, K sets of SRS path loss measurement parameters, and L sets of SRS closed-loop power control parameters, where J is an integer greater than or equal to 1, K is an integer greater than or equal to 0, and L is an integer greater than or equal to 0.

[0357] Specifically, the open-loop power control parameter includes at least one of the following:

[0358] Target received power, power offset value, and path loss compensation factor;

[0359] The path loss measurement parameters include at least one of the following:

[0360] A resource indication of at least one downlink reference signal used for path loss measurement, and a processing rule for a path loss value measured by the downlink reference signal;

[0361] The closed-loop power control parameters include: closed-loop power adjustment amount.

[0362] Further, the downlink reference signal includes any one of the following or any combination thereof:

[0363] The designated channel state information reference signal, the auxiliary synchronization signal in the synchronization signal, the demodulation reference signal of the primary broadcast channel in the synchronization signal, and the designated tracking reference signal.

[0364] Furthermore, the processing rule of the path loss value measured by the downlink reference signal specifically includes:

[0365] The path loss value measured by the downlink reference signal is compared with a preset path loss threshold value, and the path loss values ​​smaller than the path loss threshold value are weighted averaged according to a preset weight value to obtain the path loss value of the SRS.

[0366] Furthermore, the configuration information includes any of the following types of messages:

[0367] Radio resource control messages, MAC control unit messages, physical layer signaling.

[0368] Furthermore, the SRS resource set also includes multiple power offset values, and the corresponding relationship between the power offset value and the SRS category is pre-defined by the base station and the user equipment or indicated by the base station in the configuration information.

[0369] It should be noted that, when the user equipment receives the correspondence between the power offset value and the category of the SRS, it determines to use one or more power offset values ​​in the SRS resource set according to the category of the SRS.

[0370] Furthermore, the SRS resource set also includes an association relationship between an SRS power control parameter set and an SRS resource set or an SRS resource.

[0371] It should be noted that when the user equipment receives the association relationship between the SRS power control parameter set and the SRS resource set or the SRS resource, the SRS power control parameter is determined according to the association relationship between the power control parameter set and the SRS resource set or the SRS resource.

[0372] Furthermore, the scheduling unit 502 is further configured to instruct the user equipment whether to use part or all of the power control parameters of the physical uplink shared channel as part or all of the power control parameters in the SRS resource set.

[0373] It should be noted that, when the user equipment receives the indication, the user equipment uses part or all of the power control parameters of the physical uplink shared channel as part or all of the power control parameters in the SRS resource set according to the indication.

[0374] Furthermore, the SRS resource set also includes the number of repeated transmissions of the SRS.

[0375] It should be noted that, when the user equipment receives the number of repeated transmissions of the SRS, the user equipment adjusts the power control parameter of the SRS according to the number of repeated transmissions.

[0376] The embodiments of the present invention further provide several preferred embodiments to further explain the present invention, but it is worth noting that the preferred embodiments are only for better describing the present invention and do not constitute improper limitations on the present invention. The following embodiments can exist independently, and the technical features in different embodiments can be combined in one embodiment for joint use.

[0377] Preferred Embodiment 1 Configuration of SRS Power Offset

[0378] The base station configures at least one SRS power offset value set for the UE.

[0379] Each SRS power offset value set includes at least one SRS power offset value, and each SRS power offset value is used to support different scenarios. For example,

[0380] 1) The power offset value of each SS includes three values, which are used for periodic, non-periodic and non-continuous SRS transmission respectively.

[0381] 2) Or each set of SRS power offset values ​​includes two values, which are respectively used for different types of SRS transmission given trigger types (SRS Transmission Given Trigger Type).

[0382] The correspondence between the position of the SRS power offset value in the SRS power offset value set and the scene is predefined.

[0383] Each SRS power offset value set is used to support different types of SRS transmissions. For example,

[0384] 1) Supports 2 sets of SRS power offset values, where the first set is used to support power calculation of SRS that shares power control parameters with PUSCH, and the second set supports power calculation of other types of SRS;

[0385] 2) or supporting three SRS power offset value sets, wherein the first set is used to support the power calculation of the SRS that shares the power control parameters with the PUSCH, the second set supports the power calculation of the SRS used for downlink CSI acquisition, and the third set is used to support the power calculation of other types of SRS;

[0386] 3) Or support 6 SRS power offset value sets, where the first set is used to support the power calculation of SRS that shares power control parameters with PUSCH, the second set supports the power calculation of SRS for downlink CSI acquisition, the third, fourth, and fifth sets are used for the power calculation of U1, U2, and U3 types of SRS for uplink beam management, respectively, and the sixth set is used for the power calculation of other types of SRS;

[0387] 4) Or only one SRS power offset value set is supported, which is used for all the above types of SRS transmission.

[0388] When the number of SRS power offset value sets is greater than 1, the correspondence between each SRS power offset value set and the SRS category is predefined or indicated by the base station.

[0389] The UE determines the power offset value according to the SRS transmission scenario and SRS category.

[0390] The base station indication method includes one of the following:

[0391] 1) The base station configures the correspondence between the power offset value set of each SRS and the SRS category. For example, a mapping table of the correspondence supported by the predefined is used, and the base station configures an item in the mapping table for the UE using RRC information;

[0392] 2) Alternatively, the base station indicates the corresponding SRS power set in the SRS resource set (resource set), for example, by indicating the SRS power offset value set ID;

[0393] 3) Alternatively, the base station indicates the corresponding SRS power set in the information for activating or triggering the SRS, for example, by indicating the SRS power offset value set ID.

[0394] The power offset value of the SRS may be one of the following:

[0395] Method 1: Based on the cell specific part (also called p0-Nominal) and UEspecific part (also called p0-UE) of the target power configured by the base station, a set of power offset values ​​for multiple SRS are configured to reflect the differences in the above-mentioned different scenarios. At this time, the target power of SRS consists of three parts: the cell specific part, the UE specific part, and the power offset value of SRS. Among them, the target power of the cell specific part and the UE specific part may be the value specially configured for SRS, or the value configured for PUSCH may be used, which is explicitly configured or indicated by the base station, or the information is implicitly indicated. See the following examples for details. The power offset value of SRS is specially configured for SRS.

[0396] Method 2: Based on the cell specific part of the target power configured by the base station (also called p0-Nominal), the UE specific part is combined with the power offset value of SRS, and the combined two parts can be called the SRS power offset value, or the UE specific target power value of SRS. The combined part also needs to reflect the differences between the above-mentioned scenarios. Therefore, the set of power offset values ​​of SRS described above in this example can be replaced by the names of the two combined parts. Among them, the cellspecific part target power may be a value specially configured for SRS, or it may use the value configured for PUSCH, which is explicitly configured or indicated by the base station, or implicitly indicates this information. See the following examples for details. The power offset value of SRS (the combined value of the UEspecific target power value of SRS and the aforementioned SRS power offset value) is specially configured for SRS.

[0397] Preferred Embodiment 2 SRS-specific j, k, l configuration and correspondence with SRS scheduling information

[0398] The base station configures J sets of SRS open-loop power control parameters for the UE, each set of SRS open-loop power control parameters includes at least one of the following: target received power P0, path loss compensation factor alpha. Where J is an integer greater than or equal to 1. Each set of SRS open-loop power control parameters is identified by j, where j is an integer and 0<=j <J。

[0399] The base station configures K sets of SRS path loss measurement parameters for the UE, and each set of SRS path loss measurement parameters includes at least one of the following: reference signal RS resource type indication for path loss measurement, reference signal RS resource indication for path loss measurement, and processing rules for path loss values ​​of multiple reference signals for path loss measurement. . K is an integer greater than or equal to 0. Each set of SRS path loss measurement parameters is identified by k, where k is an integer and 0<=k <K。

[0400] The base station configures L sets of SRS closed-loop power control parameters for the UE, each set of SRS closed-loop power control parameters includes at least one of the following: an SRS closed-loop power control identifier. Where L is an integer greater than or equal to 0. Each set of SRS closed-loop power control parameters is identified by l, where l is an integer and 0 <l<L。

[0401] The base station configures at least one SRS resource set for the UE, and each SRS resource set contains at least one SRS resource (SRS resource). Each SRS resource indicates the resources occupied by the SRS, including parameters such as the time domain, frequency domain, and code domain. The SRS resource is associated with the transmit beam, and the association may be configured by a radio resource control (RRC) message, or may be indicated by a MAC control unit (MAC CE) message, or by physical layer signaling such as downlink control information (DCI) information.

[0402] The base station instructs the UE to send an SRS, which at least includes an indication of an SRS resource set and / or an SRS resource, and a power control parameter corresponding to the SRS is determined in one of the following ways:

[0403] Method 1: Configure the relationship between j, k, l and SRS resource set or SRS resource indication (SRS Resource Indication, SRI)

[0404] The base station configures or indicates the association between the SRS open-loop power control parameter and the SRS resource or SRS resource set.

[0405] When K>0, the base station configures or indicates the association relationship between the SRS path loss measurement parameter and the SRS resource or SRS resource set.

[0406] When L>0, the base station configures or indicates the association relationship between the SRS closed-loop power control parameter and the SRS resource or SRS resource set.

[0407] Then, the UE determines the parameters required for calculating the transmit power for the SRS according to the above association relationship: the SRS open-loop power control parameter, the SRS path loss measurement parameter, and the SRS closed-loop power control parameter.

[0408] Method 2: Configure j, k, and l in the SRS resource set. One SRS resource set supports one or more sets of power control parameters.

[0409] The J sets of SRS open-loop power control parameters configured by the base station for the UE are distinguished by SRS open-loop power control parameter identifiers.

[0410] The base station configures K sets of SRS path loss measurement parameters for the UE and distinguishes them with SRS path loss measurement parameter identifiers.

[0411] The base station configures L sets of SRS closed-loop power control parameters for the UE and distinguishes them with SRS closed-loop power control parameter identifiers.

[0412] The base station carries an SRS open-loop power control parameter identifier, an SRS path loss measurement parameter identifier, and an SRS closed-loop power control parameter identifier in the SRS resource set. The UE uses the same parameters to calculate the transmit power for all SRS resources in the SRS resource set.

[0413] If an SRS resource in an SRS resource set occupies more than one predetermined time unit, the UE uses the same parameter to calculate the transmit power, and the value is taken at the same time. Or the transmit power calculated by the UE for an SRS resource is applied to all SRS resources in the SRS resource set, including SRS resources that are repeated in the time domain.

[0414] The predetermined time unit is one of the following: OFDM symbol, time slot, subframe, frame, and time unit in future systems.

[0415] The base station may also carry more than one set of the following SRS power control parameter identifiers in the SRS resource set: SRS open-loop power control parameter identifier, SRS path loss measurement parameter identifier, SRS closed-loop power control parameter identifier. The base station needs to indicate the correspondence between the SRS power control parameter identifier and the SRS resource. Each set of SRS power control parameter identifiers indicates a set of power control parameters for the corresponding SRS resource.

[0416] Method 3: The base station configures the association of j, k, and l, and applies the configuration described using the association ID, supporting 1 set of 1 or more sets of power control parameters

[0417] The base station configures the association between the SRS open-loop power control parameters, the SRS path loss measurement parameters, and the SRS closed-loop power control parameters, and uses the SRS power control parameter association identifier to indicate different association relationships between the above parameters.

[0418] The base station carries at least one SRS power control parameter association identifier in the SRS resource set.

[0419] When the number of SRS power control parameter association identifiers is 1, the UE uses the same parameter to calculate the transmit power for all SRS resources in the SRS resource set.

[0420] When the number of SRS power control parameter association identifiers is greater than 1, the base station needs to indicate the correspondence between the SRS power control parameter identifiers and the SRS resources. A group of power control parameters indicated by each power control parameter association identifier is used for the SRS resource corresponding thereto.

[0421] The base station indicates the number of RBs occupied by SRS to the UE in the SRS resource set or in the physical layer information that triggers SRS.

[0422] The UE obtains the SRS open-loop power control parameter, SRS path loss measurement parameter, SRS closed-loop power control parameter, and the number of RBs occupied by the SRS through the above method, and uses these parameters to calculate the transmit power. For example, the following formula is an implementation method:

[0423]

[0424] Wherein, i is the time unit number, for example, the subframe number, time slot number, OFDM symbol number, etc.; j is the number of the SRS open-loop power control parameter set, k is the number of the SRS path loss measurement parameter set; l is the number of the SRS closed-loop power control parameter set. SRS,c (i) is the number of RBs occupied by SRS. This parameter may not be available. The SRS open-loop power control parameter set includes α SRS,c (j) and P 0_SRS,c (j), where P 0_SRS,c (j) It consists of two parts, the cell specific part (also called p0-Nominal) and the UE specific part (also called p0-UE); PL SRS,c (k) is the SRS path loss measurement parameter; h c(i, l) is an SRS closed-loop power control parameter, where l refers to a process identifier of the SRS closed-loop power control, or an identifier of a closed-loop power control loop.

[0425] Preferred Embodiment 3 How to select among j, k, l for SRS or j1, k1, l1 for PUSCH

[0426] NR's SRS supports different functions, such as beam management, UL CSI acquisition, and DL CSI acquisition. The beam management SRS may also have different stages, such as U1, U2, and U3, where U1 is the training of uplink transmit and receive beams, U2 is the uplink receive beam training, and U3 is the uplink transmit beam training. The number of beams trained and the beam level in U1, U2, and U3 may be different.

[0427] The SRS signal is quite special. Part of the SRS is sent for beam training, which is the SRS of the beam management function, and the other part of the SRS is sent for channel detection, that is, to obtain channel state information. The transmission beam of the former may not be specified by the base station, especially in the initial stage of beam training. The base station only schedules enough resources for the UE to send SRS and indicates which resources require the UE to use the same transmission beam. The correspondence between resources and specific transmission beams is determined by the UE. The results of its training are used by the base station as a reference to indicate the transmission beams of subsequent SRS / PUSCH / PUCCH transmissions. Taking the SRS in the initial stage as a reference, subsequent SRS transmissions may use it as a reference, whether for the purpose of beam training or channel detection.

[0428] Beam training in the non-initial stage is divided into the following cases:

[0429] Case 1: Relying on the previous reference SRS transmission beam

[0430] For case 1, if the transmit beams of the SRS to be transmitted and the PUSCH are the same, the same power control parameters can be used and the same closed-loop power control process can be shared;

[0431] If the SRS resource set to be transmitted has multiple SRS resources, the corresponding transmit beam set includes the transmit beam of the PUSCH, and the power control parameters and closed-loop power control process of the PUSCH may also be shared;

[0432] If the transmission beam of the SRS to be transmitted is different from the transmission beam of the PUSCH, but is approximately the same, that is, there is a specific QCL relationship, it is also possible to share power control parameters and a closed-loop power control process.

[0433] The specific QCL relationship described in the present invention means that at least the beam resources of the transmission resources of SRS and PUSCH have certain similarities, such as similar directions. The relationship between beams is generally measured by QCL parameters, so the specific QCL relationship refers to satisfying specific QCL assumptions, such as certain part of the parameters in the QCL parameters satisfying certain threshold requirements, such as the spatial parameters in the QCL parameters satisfying certain threshold requirements. When the compared beams are uplink or downlink beams, it is inaccurate to measure the beam correlation by quasi-co-addressing due to the different transmitting ends. At this time, the correlation relationship between the uplink and downlink parameter signals can be used for judgment, and the spatial parameter characteristics of the uplink (downlink) reference signal can be determined by the spatial parameter characteristics of the channel experienced by the downlink (uplink) reference signal.

[0434] Case 2: Transmit beam not dependent on previous reference SRS

[0435] For case 2, since it does not rely on the previous reference SRS transmission beam, it is best to perform independent power control.

[0436] For the above situations, the base station indicates that the UE's transmit beam is the same as the previous SRS transmit beam used as a reference, but the base station may change the receive beam according to the scheduling situation. Therefore, the above situation may be that the UE determines whether to share power control parameters and closed-loop power control process with PUSCH based on specific conditions. At the same time, it is also necessary to support the base station to indicate whether to share power control parameters and closed-loop power control process with PUSCH.

[0437] The base station configures SRS-specific power control parameters for the UE, see the relevant description of the preferred embodiment 2.

[0438] The base station configures the PUSCH power control parameters for the UE, which are described as follows:

[0439] 1) The base station configures J1 sets of PUSCH open-loop power control parameters for the UE, each set of PUSCH open-loop power control parameters includes at least one of the following: PUSCH target received power P0, PUSCH path loss compensation factor alpha. Among them, J1 is an integer greater than or equal to 1; each set of PUSCH open-loop power control parameters is identified by j1, j1 is an integer, and 0<=j1 <J1;

[0440] 2) The base station configures K1 sets of PUSCH path loss measurement parameters for the UE, and each set of PUSCH path loss measurement parameters includes at least one of the following: at least one reference signal RS resource type indicator for path loss measurement, a reference signal RS resource indicator for path loss measurement, and a processing rule for the path loss value of multiple reference signals for path loss measurement. Among them, K1 is an integer greater than or equal to 1; each set of PUSCH path loss measurement parameters is identified by k1, k1 is an integer, and 0<=k1 <K1;

[0441] 3) The base station configures L1 sets of PUSCH closed-loop power control parameters for the UE, each set of PUSCH closed-loop power control parameters includes at least one of the following: PUSCH closed-loop power control identifier. Where L1 is an integer greater than or equal to 1. Each set of PUSCH closed-loop power control parameters is identified by l1, l1 is an integer, and 0<=l1 <L1。

[0442] The base station configures at least one SRS resource set for the UE, and each SRS resource set contains at least one SRS resource. Each SRS resource indicates the resources occupied by the SRS, including parameters such as the time domain, frequency domain, and code domain. The SRS resources indicated in the SRS resource set may be periodic, non-periodic, or semi-static. The scheduling methods of different SRS resource sets may be different. For example, the periodic method only requires RRC configuration, and the UE sends SRS at the corresponding position (such as the time and frequency domain). The semi-static method requires RRC configuration and is activated by MAC CE. The UE needs to send SRS at the position indicated by the activated SRS resource set. The non-periodic method requires RRC configuration, and the physical layer signaling triggers the UE to send SRS at the specified location. The non-periodic method may also require MACCE to activate a part of the SRS resource sets configured by RRC to reduce the indication overhead of the SRS resource sets of the physical layer trigger signaling.

[0443] The base station configures or indicates the association between SRS resources and transmit beams. The association may be configured by an RRC message, indicated by a MAC CE, or indicated by physical layer signaling such as DCI information.

[0444] The base station instructs the UE to send the SRS, which may be the above-mentioned periodic, non-periodic, or semi-static manner. The UE may determine the SRS resource set and / or the indication of the SRS resource. The power control parameter corresponding to the SRS is determined in one of the following ways:

[0445] Method 1: The base station explicitly indicates whether SRS shares the power control of PUSCH

[0446] The base station indicates whether the SRS resource (set) shares the power control process with the PUSCH.

[0447] Whether the SRS resource (set) shares the power control process with the PUSCH may be: whether to share the open-loop power control parameters, path loss measurement parameters and closed-loop power control process of the PUSCH, or separately indicate whether to share the open-loop power control parameters, path loss measurement parameters and closed-loop power control process of the PUSCH.

[0448] The base station configures by RRC signaling, indicates by MAC CE, or indicates by physical layer signaling whether the SRS resource (set) shares the power control process with the PUSCH.

[0449] Specifically, for a periodic SRS resource set, the base station uses RRC signaling to configure whether to share the information of the power control process with PUSCH; for a semi-static SRS resource set, the base station may use RRC signaling configuration, or MAC CE to indicate whether to share the information of the power control process with PUSCH; for a non-periodic SRS resource set, the base station uses RRC signaling, or MAC CE, or physical layer signaling to indicate whether to share the information of the power control process with PUSCH.

[0450] Method 2: UE determines whether to share

[0451] The UE determines whether to share the power control parameters and closed-loop power control process of the PUSCH based on the correspondence between the SRS resources and the transmit beam.

[0452] If the UE determines that the transmission beam of this SRS refers to the beam resources of the previously sent pilot, such as the previous transmission beam of the SRS, or the previous reception beam of the CSI-RS, it determines whether to share the power control parameters of the PUSCH and the closed-loop power control process based on the relationship between the SRS transmission beam and the PUSCH transmission beam.

[0453] If the UE determines that the transmission beam of the SRS this time does not refer to any beam resource of the previously transmitted pilot, the SRS transmission beam is independent of the power control parameters of the PUSCH.

[0454] For SRS that shares power control parameters and a closed-loop power control process with PUSCH, a method for determining j, k, and l.

[0455] The method that does not require further instructions is to use the beams to determine whether they are the same or the Quasi-Co-Location (QCL) relationship:

[0456] When the number of transmit beams associated with the SRS resource set is 1, the UE compares the transmit beam associated with the SRS resource set with the beam resource associated with the PUSCH power control parameter:

[0457] 1) The same ones can be shared;

[0458] 2) Different ones that meet specific QCL relationships can be shared;

[0459] 3) If the SRS is different and does not satisfy the specific QCL relationship, a default set of independently configured SRS-specific power control resources is used.

[0460] When the number of transmit beams associated with the SRS resource set is greater than 1, and the transmit powers of the multiple transmit beams are required to be consistent, then

[0461] 1) When at least one of the beam resources associated with the power control parameters of the PUSCH in the multiple SRS transmission beams is the same as the beam resource associated with the power control parameters of the PUSCH, the parameters associated with the same beam resource in the PUSCH can be shared;

[0462] 2) When at least one beam resource associated with the power control parameter of PUSCH in the multiple SRS transmission beams satisfies a specific QCL relationship, the parameters associated with the same beam resource in PUSCH can be shared;

[0463] 3) If the SRS multiple transmission beams do not have the same beam resources as the associated beams in the PUSCH power control parameters, or meet a specific QCL relationship, a default set of independently configured SRS-specific power control resources is used.

[0464] For a scenario where a beam is not used, all SRS resources in the SRS resource set share the power control parameters of the PUSCH.

[0465] Alternatively, the SRS resource set matches the PUSCH power control parameters according to the grant type, for example, the grant free PUSCH power control parameters are used for the grant free SRS resource set, and the grant based PUSCH power control parameters are used for the grant freee SRS resource set. Alternatively, the grant free PUSCH power control parameters are used for the periodic and semi-static SRS resource sets, and the grant based PUSCH power control parameters are used for the non-periodic SRS resource sets.

[0466] Methods that need further instructions:

[0467] The base station indicates which PUSCH power control parameters are applied to the SRS resources. The indication methods are:

[0468] For an independently configured SRS, the method for determining the open-loop power control parameters, path loss measurement parameters, and closed-loop power control parameters of the SRS is shown in Preferred Embodiment 2.

[0469] In the case where the SRS resource set and the PUSCH share power control parameters, the base station indicates which PUSCH open-loop power control parameters, path loss measurement parameters, and closed-loop power control parameters are used for the SRS resources.

[0470] For the SRS that shares the power control parameters of PUSCH, the following parameters are obtained from the power control parameters of PUSCH: target receiving power P0_PUSCH, alpha_PUSCH, PL measurement configuration of PUSCH, and the number of PUSCH closed-loop power control. It is also necessary to determine the power offset value based on the SRS transmission scenario and SRS category, see the relevant description in Example 1, and finally determine the transmission power of SRS.

[0471] For the SRS that shares the power control parameters of PUSCH, the following parameters are obtained from the power control parameters of PUSCH: alpha_PUSCH, PL measurement configuration of PUSCH, and the number of PUSCH closed-loop power control. It is also necessary to determine the power offset value according to the SRS transmission scenario and SRS category. The power offset value includes the UE-specific target power part, and there is no need to share the UE-specific target power of PUSCH. See the relevant description of Example 1 to finally determine the transmission power of SRS.

[0472] Preferred embodiment 4: SRS resource set may not include power control parameter configuration

[0473] The base station configures at least one SRS resource set for the UE. Each SRS resource set includes at least one SRS resource.

[0474] When one or more of the following conditions are met, the SRS resource set does not include power control parameters.

[0475] 1) The SRS resource set is configured as periodic;

[0476] 2) The SRS resource set is configured as semi-static;

[0477] 3) The number of SRS resources in the SRS resource set is greater than 1;

[0478] 4) The number of repetitions of SRS resource in SRS resource set is greater than 1;

[0479] 5) The number of antenna ports of the SRS resource in the SRS resource set is 1;

[0480] 6) The transmit beam resource information of the SRS resource in the SRS resource set is transparent to the base station;

[0481] 7) No beam resource related information, such as SRI, TRI, TPMI, SSblock indication or CRI, is configured in the SRS resource set.

[0482] The method for determining the power control parameter is one of the following:

[0483] 1) The base station configures a set of parameters for the UE, which is used for power calculation of the SRS resource in the SRS resource set of the UE that meets the above conditions;

[0484] 2) The base station configures a set of cell-level parameters for power calculation of SRS resources in the SRS resourceset of all UEs that meet the above conditions;

[0485] 3) The final power of the PRACH process used by the UE;

[0486] 4) The UE measures one or more SS blocks, determines the PL, uses the configured target power value for the PRACH as P0_SRS, and calculates the transmit power using the following formula for all SRS resources in the SRS resource set:

[0487]

[0488] Specifically, it is predetermined to adopt one of the above methods.

[0489] Specifically, the base station configuration or instruction determines to adopt one of the above methods.

[0490] Preferred embodiment 5 SRS resource set includes the default power control parameter configuration, and is shared with PUSCH when a certain relationship is met

[0491] The base station configures at least one SRS resource set for the UE. Each SRS resource set includes at least one SRS resource.

[0492] For each SRS resource set, at least one power control parameter set is configured.

[0493] 1) When the SRS resource set contains only one power control parameter set, all SRS resources in the SRS resource set use the power control parameter set to calculate power;

[0494] 2) When the SRS resource set contains more than one power control parameter set, for example, N (N>1), the SRS resources in the SRS resource set are divided into N groups, and each group of SRS resources uses a corresponding power control parameter set to calculate power.

[0495] The power control parameter set includes at least one of the following parameters:

[0496] 1) SRS power offset value P0_SRS_OFFSET;

[0497] 2) Target received power of SRS P0_SRS;

[0498] 3) SRS path loss compensation factor Alpha_SRS;

[0499] 4) Path loss PL measurement parameters;

[0500] 5) SRS closed-loop power control process.

[0501] The reference signal RS resource indication used for path loss PL measurement estimation can share the same resource pool with the path loss measurement parameters of the PUSCH described below, that is, the base station configures a resource pool for PL measurement estimation parameters, and the SRS resource set only indicates the number in the resource pool.

[0502] The path loss measurement parameters include at least one of the following: a reference signal RS resource type indication for path loss measurement, a reference signal RS resource indication for path loss measurement, and a processing rule for path loss values ​​of multiple reference signals for path loss measurement.

[0503] The SRS closed-loop power control process refers to a closed-loop power control process dedicated to SRS. Each cell may be configured with one or more processes. The SRS resource set configured as the same process in each cell may share the closed-loop power adjustment amount.

[0504] The base station may configure the following PUSCH power control parameters for the UE:

[0505] 1) J1 sets of PUSCH open-loop power control parameters, each set of PUSCH open-loop power control parameters includes at least one of the following: target received power P0, path loss compensation factor alpha. Wherein J1 is an integer greater than or equal to 1;

[0506] 2) K1 sets of PUSCH path loss measurement parameters, each set of PUSCH path loss measurement parameters includes at least one of the following: a reference signal RS resource type indication for path loss measurement, a reference signal RS resource indication for path loss measurement, and a processing rule for path loss values ​​of multiple reference signals for path loss measurement. . Wherein, K1 is an integer greater than or equal to 1;

[0507] 3) L1 set of PUSCH closed-loop power control parameters, each set of PUSCH closed-loop power control parameters includes at least one of the following: a PUSCH closed-loop power control identifier, wherein L1 is an integer greater than or equal to 1.

[0508] The base station also configures the association relationship between the power control parameters of the above PUSCH and the beam resources or beam resource groups. For example, some or all of the open-loop power control parameters in J1, K1, and L1 are associated with the beam resource indication information respectively. For example, J1=3, including J1_1, J1_2, and J1_3, where J1_1 and J1_2 are associated with SRI1 and SRI2 respectively. K1=3, including K1_1, K1_2, and K1_3, where K1_1 and K1_2 are associated with SRI1 and SRI2 respectively. L1=2, including L1_1, L1_2, where L1_1 and L1_2 are associated with SRI1 and SRI2 respectively.

[0509] The base station uses beam resource information in the physical layer information to instruct the UE to obtain PUSCH open-loop power parameters, PUSCH path loss measurement parameters, and PUSCH closed-loop power control parameters.

[0510] The base station can also use the index value of any one of the PUSCH open-loop power parameter, PUSCH path loss measurement parameter and PUSCH closed-loop power control parameter and the local beam resource number of the beam resource group corresponding to the index value in the physical layer information to instruct the UE to obtain the PUSCH open-loop power parameter, PUSCH path loss measurement parameter and PUSCH closed-loop power control parameter. The advantage of doing so is that the overhead of physical layer beam resource indication can be saved.

[0511] The base station also configures the association relationship between the power control parameters of the above PUSCH and the grant type. For example, all open-loop power control parameters in J1, K1, and L1 are associated with the grant type respectively. For example, J1=3, including J1_1, J1_2, and J1_3, where J1_1 and J1_2 are associated with the grant based type respectively, and J1_3 is associated with the grant free type. K1=3, including K1_1, K1_2, and K1_3, where K1_1 and K1_2 are associated with the grant based type respectively, and K1_3 is associated with the grant free type. L1=2, including L1_1, L1_2, where L1_1 is associated with the grant based type, and L1_2 is associated with the grant free type.

[0512] The base station indicates the SRS beam resource information to the UE in one of the following ways:

[0513] 1) Configuring an association relationship between SRS resource set or SRS resource and beam resource indication information in Radio Resource Control (RRC signaling). The association relationship may be: configuring beam resource indication information in SRS resource set or SRS resource, for example, SRS resource indication (SRI), tracking reference signal resource indication (TRI), synchronization signal block (SS block) indication, CRI, or beam resource information indicated by the QCL relationship of the above beam resource information, or Transmitted Precoding Matrix Indicator (TPMI);

[0514] 2) Indicating the association between the SRS resource set or the SRS resource and the beam resource indication information in the MAC CE. The association may be: configuring the beam resource indication information for each activated SRS resource set;

[0515] 3) Indicating the association relationship between the SRS resource set or the SRS resource and the beam resource indication information in the physical layer information, such as the downlink control information (DCI). The association relationship may be: indicating the beam resource indication information for the triggered SRS resource set.

[0516] The UE receives the configuration information of the SRS resource set, the power control parameter configuration information of the PUSCH, and receives the related MAC CE and physical layer information, and obtains the association between the SRS resource set or the SRS resource and the beam resource indication information.

[0517] When one or more of the following conditions (and / or) are met, the power control parameters of the PUSCH are used to replace part or all of the power control parameters in the SRS resource set.

[0518] 1) When the application scenario is a non-beam scenario

[0519] 2) The SRS resource set is configured as aperiodic;

[0520] 3) The SRS resource set is configured as semi-static;

[0521] 4) The number of SRS resources in the SRS resource set is equal to 1;

[0522] 5) The number of repetitions of SRS resource in SRS resource set is equal to 1;

[0523] 6) The antenna resources associated with the SRS resource set or SRS resource match the antenna resources associated with the PUSCH;

[0524] The antenna resources refer to resources related to a physical or virtual antenna, such as an antenna port, an antenna panel, an antenna port group, etc.

[0525] 7) The beam resource indication information associated with the SRS resource set or SRS resource is identical or matches part or all of the beam resource indication information associated with the PUSCH power control parameter;

[0526] Matching means that beam resources are indicated by the same resource number, or that beam resources satisfy a specific QCL relationship.

[0527] When the number of beam resources associated with the SRS resource set or SRS resource is greater than 1, matching means that all beam resources associated with the SRS resource set or SRS resource and the beam resources associated with the PUSCH power control parameters satisfy a specific QCL relationship.

[0528] The beam resource indication information associated with the PUSCH power control parameter may be the transmission resource of the DMRS of the PUSCH, such as the antenna port, the transmission beam, the SRI, etc.

[0529] 8) The same as the grant type associated with the SRS resource set or the SRS resource grant type and the PUSCH power control parameter.

[0530] The authorization type refers to grant based or grant free.

[0531] 9) The beam resource information sent by the SRS resource in the SRS resource set is indicated by the base station, or the beam resource information sent by the SRS resource in the SRS resource set is not transparent to the base station.

[0532] Among them, the beam resource information sent by the SRS resource in the SRS resource set is indicated by the base station, which means that the base station configures or indicates the sending beam resource of the SRS resource through RRC signaling, or through MAC CE or physical layer signaling, such as DCI.

[0533] The transmit beam resource may be at least one of: a resource indication of an SS block, a resource indication of an SRS (SRI), a resource indication of a TRS (TRI), and a resource indication of a CSI-RS (CRI).

[0534] The transmit beam resource refers to one or more transmissions before the base station indicates the SRS resource. For example, the transmit beam resource refers to the transmission of the SS block, and the process is as follows:

[0535] The base station periodically sends M SS blocks, and they are numbered m=0 to M-1. Assume that the UE needs to train N beams. The UE first uses the same receiving beam to measure the M SS blocks in one period to obtain their respective RSRPs. In the subsequent SS block periods, different receiving beams are used to measure the RSRPs of different beam pairs from other base stations to the UE, and the PLs of these beam pairs are calculated at the same time. After comparison, the UE feeds back the beam pair with the smaller PL to the base station, and the base station can indicate the beam resources for subsequent scheduling based on this information.

[0536] Assume that the base station indicates that m=1 in the SS block is used as reference information for a certain SRS transmission beam. Before this, the UE has received at least N SS blocks with m=1 beams. Then the UE selects the receiving beam corresponding to the SS block with the best reception performance (for example, the maximum RSRP or the minimum PL) as the transmission beam of the SRS.

[0537] In addition, the transmission of the resource indication of the send beam resource reference SRS is as follows:

[0538] The base station configures an SRS resource set for the UE, assuming it is identified by SRS resource set ID 1, where multiple SRS resources are configured, assuming they are identified by SRS resource IDs 1 to x respectively. The base station does not specify the transmission beam resource for the UE, that is, the transmission beam of the SRS is transparent to the base station. At this time, the UE needs to determine the transmission beam resource by itself. Generally, for UEs that need to perform large-scale beam scanning, there is no strong necessity for sharing the power control parameters of the PUSCH. This process may be used for uplink beam management or uplink beam scanning. After the UE sends the SRS, the base station side performs measurements and indicates the beam resources for subsequent transmissions based on these measurement results.

[0539] After the above SRS resource set, the base station indicates that the transmission beam of a certain SRS is SRS resource ID 1 in SRS resource set ID 1 in a manner that the transmission beam is non-transparent to the base station.

[0540] SRI, as indication information of SRS resources, may refer to one of the following: SRS resource set indication information and SRS resource indication information within the SRS resource set; only the identification information of the SRS resource, and all SRS resources of all SRS resource sets of the UE have a unified identification.

[0541] Whether the above conditions are enabled may also be determined based on the base station configuration: the base station configures for each SRS resource set the parameters of whether to allow SRS to share the power control process of PUSCH.

[0542] When SRS is not allowed to share the power control process of PUSCH, the transmit power is calculated using the power control parameters configured in the SRS resource set.

[0543] When the SRS is allowed to share the power control process of the PUSCH, the UE determines whether to share the power control process of the PUSCH according to a combination result of one or more of the following conditions.

[0544] When the above conditions are met, the method for determining the power control parameter is one of the following:

[0545] 1) Calculate the transmit power for the SRS resource set using all the PUSCH power control parameters associated with the SRS resource set or the beam resource indication information associated with the SRS resource;

[0546] 2) Calculate the transmit power for the SRS resource set using the partial power control parameters of the PUSCH associated with the SRS resource set or the beam resource indication information associated with the SRS resource;

[0547] 3) Calculate the transmit power for the SRS resource set using all PUSCH power control parameters associated with the SRS resource set or the grant type associated with the SRS resource;

[0548] 4) Calculate the transmit power for the SRS resource set using the PUSCH partial power control parameter associated with the SRS resource set or the grant type associated with the SRS resource.

[0549] That is, using the PUSCH partial or full power control parameters respectively refers to replacing the corresponding SRS configuration parameters with the following partial or full PUSCH power control parameters:

[0550] 1) Replacement relationship 1: replace P0_SRS with the sum of P0_PUSCH and P0_SRS_OFFSET;

[0551] 2) Alternative relationship 2: Alpha_PUSCH is used instead of Alpha_SRS;

[0552] 3) Replacement relationship 3: replace the RS resource indication of PL estimation configured for SRS with the RS resource indication of PL estimation configured for PUSCH;

[0553] 4) Alternative relationship 4: The closed-loop power adjustment amount configured for SRS is replaced by the closed-loop power adjustment amount configured for PUSCH.

[0554] Specifically, some or all of the PUSCH power control parameters are configured by the base station or are predefined.

[0555] Predefined means supporting one or more of the above-mentioned substitution relationships.

[0556] Base station configuration means that the base station configures one or more alternative relationships for the UE. For example, the bitmap method is supported, and 4 bits of information are used to indicate whether alternative relationships 1 to 4 are enabled. Alternatively, several alternative relationship subsets are predefined, such as 4 subsets. Subset 1 is to enable all alternative relationships 1 to 4, subset 2 is to enable only alternative relationships 3 and 4 among the above alternative relationships, subset 3 is to enable only alternative relationship 4 among the above alternative relationships, and subset 4 is to enable none of the above alternative relationships, that is, it does not support replacing SRS parameters with PUSCH parameters.

[0557] Examples of different SRS types supported by the above process:

[0558] The base station configures the SRS resource set of SRS for DL ​​CSI acquisition and SRS for antenna switching to not allow SRS to share the parameters of the power control process of PUSCH, and configures the SRS resource set of SRS for UL CSI acquisition and SRS for beam management to allow SRS to share the parameters of the power control process of PUSCH. In the scenario where beams are used, the UE can determine whether SRS for UL CSI acquisition and SRS for beam management share the power control process of PUSCH based on the beam relationship; in the non-beam scenario, there is no SRS for beam management, and SRS for UL CSI acquisition can share the power control parameters of PUSCH.

[0559] Preferred Embodiment 6 Enhancement of Multiple Downlink (DL) Reference Signals (RS) for Path Loss (PL) Measurement

[0560] The base station configures K path loss measurement parameters for the UE, and each path loss measurement parameter includes at least one of the following: indication information of downlink reference signal DL RS resources, and a processing rule for multiple PL values.

[0561] The indication information of the downlink reference signal DL RS resource includes one of the following: the type of DL RS and the resource indication of DL RS.

[0562] The base station configures an indication of a beam resource in the DL RS resource, and the UE only uses the DL RS of the beam resource to measure PL.

[0563] The base station configures an indication of a beam resource in the DL RS resource, and the UE obtains a set of DL RSs having a QCL relationship with the beam resource through the QCL relationship configured by the base station for measuring PL.

[0564] The base station configures an indication of a beam resource in the DL RS resource, and instructs the UE to obtain a set of DL RSs having a QCL relationship with the beam resource through the QCL relationship configured by the base station, for measuring PL.

[0565] The base station does not configure DL RS resources for PL calculation, or configures a reserved value in the DL RS resources. In this case, the UE determines the DL RS used for measuring and calculating PL, or assumes that uplink and downlink reciprocity exists and calculates PL using the DL RS associated with the downlink channel.

[0566] The base station configures more than one beam resource indication in the DL RS resources. These beam resource indications are beam resource indications of the same type. In a specific scenario, these beam resource indications of the same type satisfy a specific QCL relationship.

[0567] The base station configures more than one beam resource indication in the DL RS resources. These beam resource indications include different types of beam resource indications. In a specific scenario, these different types of beam resource indications satisfy a specific QCL relationship.

[0568] The beam resource indication refers to at least one of the following information used to indicate the downlink transmission beam of the base station: CRI(s), SS-block resource indication, TRS resource indication. Among them, CRI refers to CSI-RS resource indication (CSI-RSresource indication), which is used to instruct the UE to use the specified CSI-RS for PL measurement. SS-block resource indication refers to the resource indication of the SSS (secondary synchronization signal) in the NR-SS synchronization signal or the DMRS (demodulation reference signal) of the PBCH (primary broadcast channel), which is used to instruct the UE to use the specified SS-block for PL measurement. TRS is a tracking reference signal (Tracking Reference Signal), and the TRS resource indication instructs the UE to use the specified TRS for PL measurement.

[0569] The specific scenarios include: when power control parameters are configured for PUSCH of a beam scenario, when power control parameters are configured for PUCCH of a beam scenario, and when power control parameters are configured for SRS of a beam scenario for obtaining downlink or uplink CSI.

[0570] The processing rule for multiple PL values ​​is a rule for obtaining a PL value by processing multiple PLs measured by DL RSs sent by multiple configured DL RS resources. It includes:

[0571] The multiple PLs meeting the predetermined conditions are sorted and weighted averaged according to the predetermined weights. The predetermined conditions include that the PL is less than a configured threshold. The base station configures the predetermined weights.

[0572] Preferred embodiment 7: SRS resource set maintains consistent power, multiple cycles maintain consistent power

[0573] The SRS resource set includes at least one SRS resource, and the transmission powers of multiple SRS resources in the same SRS resource set are consistent.

[0574] For a periodic SRS resource set, the base station configures a period, and the UE periodically uses the SRS resources in the SRS resource set to send an SRS.

[0575] The transmission power of the SRSs transmitted by occupying the SRS resources in the same SRS resource set within a period remains consistent.

[0576] For a periodic SRS resource set, the base station configures a number of periods for maintaining the same transmission power, and the transmission power of the SRS transmitted by occupying the SRS resources of the SRS resource set within the number of periods remains consistent.

[0577] For a non-periodic SRS resource set, SRS triggering is performed by physical layer signaling, and SRSs occupying multiple SRS resources indicated in the SRS resource set in the same triggering maintain consistent transmission power.

[0578] The SRS trigger may indicate SRS resources of an SRS resource set once, or indicate SRS resources of multiple SRS resource sets repeatedly. The SRSs occupying multiple SRS resources indicated in the SRS resource set in the same trigger maintain consistent transmission power.

[0579] For the SRS resource set of semi-static scheduling, in the activated state, similar to the periodic SRS resource set, the base station configures the period, and the UE periodically uses the SRS resources in the SRS resource set to send the SRS.

[0580] The transmission power of the SRSs transmitted by occupying the SRS resources in the same SRS resource set within a period remains consistent.

[0581] For a semi-static SRS resource set, the base station configures a number of cycles for maintaining the same transmission power, and the transmission power of the SRS transmitted by occupying the SRS resources of the SRS resource set within the number of cycles remains consistent.

[0582] Preferred Embodiment 8 Influence of SRS repetition times on SRS transmission power

[0583] Repeated transmission of SRS in the time domain can enhance reception quality and improve coverage.

[0584] Repeated transmission of SRS in the time domain may also achieve another purpose: reducing the transmission power, thereby alleviating interference to other communication nodes.

[0585] The base station reflects the influence of the number of SRS repetition transmissions on the SRS transmission power in at least one of the following ways:

[0586] 1) Use the SRS time domain repetition factor to adjust the transmit power parameters;

[0587] For example, the total number of repeated transmissions is used as a coefficient for power calculation. The following formula is an implementation method, R SRS,c (i) is the total number of repeated transmissions. If the number of transmissions is one and retransmissions is one, for a total of two times, the value is 2. For other parameters, see the description of Example 2.

[0588]

[0589] 2) The influence coefficient of the SRS time domain repetition factor configured by the base station on the transmission power;

[0590] For example, the base station selects a configuration from a pre-configured influence coefficient table and configures it to the UE. Assume that the influence coefficient table includes 0 and 1 and values ​​between 0 and 1, such as R SRS,c ∈{0,0.5,1}. 0 is equivalent to not enabling the function; 1 is equivalent to fully enabling the function. For example, if the transmission is repeated twice, the transmission power of SRS will decrease by 3dB compared with not enabling the function; and a value between 0 and 1 indicates that the influence coefficient is partially enabled.

[0591] The following formula is a way to achieve this, β SRS,c is the influence coefficient. Other parameters are as above.

[0592]

[0593] 3) Use a switch to control whether to enable the function of the SRS time domain repetition factor affecting the transmission power.

[0594] If enabled, the calculated transmit power of SRS is adjusted in proportion to the SRS time domain repetition factor. For example, if the time domain is repeated twice, the transmit power of SRS is reduced by 3dB compared to when this function is not enabled.

[0595] For example, the β in the above equation can be configured with switches. SRS,c The value is 0 or 1.

[0596] Preferred Embodiment 9 Relationship between PUCCH Power Control Parameters and PUSCH / PDSCH

[0597] The beam resources of PUCCH and PUSCH may be different. The scheduling time of PUCCH is generally longer. Resource configuration information, such as transmission beam resource information, may be updated by RRC signaling, while PUSCH may have a more flexible scheduling mechanism. Resource configuration information, such as transmission beam resource information, may be indicated by RRC signaling, MAC CE, or physical layer signaling. In some scenarios, PUCCH temporarily adopts the transmission beam resource information and / or power control mechanism of PUSCH, which will bring benefits.

[0598] The base station configures the power control parameters of PUCCH for the UE and configures and / or schedules resources for PUCCH. The UE can determine the power control parameters, including open-loop power control parameters, path loss calculation parameters, and closed-loop power control parameters, based on the resources of the transmitted PUCCH, and calculate the transmit power of PUCCH.

[0599] The base station configures the power control parameters of PUSCH for the UE and configures and / or schedules resources for PSCCH. The UE can determine the power control parameters, including open-loop power control parameters, path loss calculation parameters, and closed-loop power control parameters, based on the resources of the transmitted PUSCH, and calculate the transmit power of PUSCH.

[0600] When at least one of the following conditions is met, PUCCH can temporarily use the power control parameters of PUSCH and / or the transmit beam resources of PUSCH.

[0601] 1) PUSCH and PUCCH are in the same slot;

[0602] 2) PUSCH and PUCCH are frequency-divided;

[0603] 3) The transmit beams of PUCCH and PUSCH are the same;

[0604] 4) The transmission beams of PUCCH and PUSCH satisfy a specific QCL relationship.

[0605] The above-mentioned PUCCH temporarily uses the power control adjustment parameters and transmission beam resources of the PUSCH only for this PUCCH transmission. This PUCCH transmission does not affect the transmission beam resources and power control parameters of other PUCCHs.

[0606] When PUCCH temporarily uses the power control parameters of PUSCH, its closed-loop power control parameters use the closed-loop power control parameters of PUSCH, that is, the closed-loop power adjustment amount of PUSCH, which is updated by the closed-loop power process of PUSCH. PUCCH temporarily uses this amount and does not update it.

[0607] When PUCCH temporarily uses the power control parameters of PUSCH, the target received power P0 value in its open-loop power control parameters is determined by the sum of the target received power P0 value of PUSCH and the target received power offset value of PUCCH. The target received power offset value of PUCCH is the offset value of the target received power of PUCCH relative to PUSCH configured by the base station.

[0608] The following is one way to implement it:

[0609]

[0610] Where i is the time unit number, for example, the subframe number, time slot number, OFDM symbol number, etc.; j is the number of the PUSCH open-loop power control parameter set, F is the format number of the PUCCH; l is the number of the PUSCH closed-loop power control parameter set, which also refers to the process identifier of the PUSCH closed-loop power control, or the identifier of the closed-loop power control loop. O_PUSCH,c (j), α c (j), PL c 、f c (i, l) are the target receiving power of PUSCH, path loss compensation factor, path loss calculation parameter, and closed-loop power control adjustment value respectively.

[0611] Preferred embodiment 10:

[0612] The base station configures the power control parameters of PUSCH for the UE, including at least one set of open-loop power control parameters (including at least the target received power P0 and the path loss factor alpha), at least one set of path loss measurement parameters (RS resource configuration for PL calculation), and at least one set of closed-loop power control processes, which are indicated by the open-loop power control parameter identifier, the path loss measurement parameter identifier, and the closed-loop power control process identifier, respectively.

[0613] The base station also configures at least one of the following associations for the UE:

[0614] 1) Association between open-loop power control parameters and reference signal index;

[0615] 2) Association between path loss measurement parameters and reference signal index;

[0616] 3) Association between the closed-loop power control process and the reference signal index;

[0617] 4) Correlation between open-loop power control parameters and path loss measurement parameters;

[0618] 5) The relationship between open-loop power control parameters and closed-loop power control process;

[0619] 6) Correlation between path loss measurement parameters and closed-loop power control process;

[0620] 7) The relationship between open-loop power control parameters, path / loss measurement parameters and closed-loop power control process

[0621] The base station can instruct the UE to obtain the PUSCH power control parameters by configuring at least one of the following: a reference signal index, an open-loop power control parameter identifier, a path loss measurement parameter identifier, and a closed-loop power control process identifier.

[0622] The closed-loop power control process identifier determines the closed-loop power control process, also called a closed-loop power control loop. The UE maintains a local power adjustment value f(i, l) for each closed-loop power control process (assuming that the closed-loop power control process identifier is l).

[0623] When the target received power P0 and / or the path loss factor alpha in the open-loop power control parameters are configured or reconfigured, the closed-loop power adjustment parameter f(i,l) is reset. This includes one of the following situations:

[0624] 1) When the open-loop power control parameter sets of PUSCH are configured or reconfigured, f(i, l) corresponding to all closed-loop power control process identifiers are reset.

[0625] 2) When part of the open-loop power control parameter set of PUSCH is configured or reconfigured, only f(i, l) corresponding to the closed-loop power control process identifier associated with the configured or reconfigured open-loop power control parameter set index is reset.

[0626] 3) When some parameters in the open-loop power control parameter set of PUSCH, such as P0 and or alpha, are configured or reconfigured, only f(i,l) corresponding to the closed-loop power control process identifier associated with the configured or reconfigured open-loop power control parameter set index is reset.

[0627] The above also applies to the power control parameters of PUCCH and SRS.

[0628] The base station can be configured to reset or inherit the closed-loop power control process. The configuration signaling can be RRC signaling, MAC CE, or PHY signaling.

[0629] The base station can be configured to inherit the closed-loop power control process between different channels and signals. The configuration signaling can be RRC signaling, MAC CE, or PHY signaling.

[0630] The present invention can determine a unified power control formula and configuration architecture for different requirements of SRS-CSI for PUSCH, SRS-CSI for PDSCH, and SRS-BM U1 / U2 / U3.

[0631] 1) Explicitly or implicitly (for example, through the characteristics of the SRS resource, especially the binding relationship with the beam beam) indicate whether the SRS and PUSCH share the power control parameters P0 / alpha / PL and whether they share f(i), where f(i) represents the power control correction function of subframe i;

[0632] 2) Independent SRS power control parameter configuration requires establishing associations for multiple J, K, and L of SRS to facilitate dynamic indication of SRS. This can be done by configuring the association between beam (group) and j, k, and l, or by configuring the association between j, k, and l;

[0633] 3) When the power control parameters of PUSCH are shared, a method for implicitly and explicitly determining the power control parameters of PUSCH used by SRS.

[0634] Preferred embodiment y: (Configuration parameters for antenna switching control and / or for beam management control)

[0635] In this embodiment, there is a configuration parameter in the configuration of an SRS resource set, and the configuration parameter has at least two states: antenna switching state and beam switching state. Or the configuration parameter is a configuration parameter jointly encoded with antenna switching information and beam management information. Or the configuration parameter is a shared configuration parameter of antenna switching information and beam management information, that is, the configuration parameter is used for antenna switching control or for beam management control.

[0636] For example, if this configuration parameter is X, when X is 0, it means that different SRS resources in this SRS resource set are used for antenna switching, and different SRS resources in this set correspond to different antennas or different SRS resources in this set correspond to different antenna groups. When X is 1, it means that different SRS resources in this SRS resource set are for beam switching, and different SRS resources represent different beams.

[0637] Furthermore, this configuration parameter may have at least two of the following status bits: antenna switching, beam switching to the same antenna, beam switching to different antennas, and beam unchanged to the same antenna.

[0638] Furthermore, this configuration parameter may have at least two of the following status bits: the antenna switches with the same beam, the antenna switches with different beams, the beam switches with the same antenna, the beam switches with different antennas, and the beam remains unchanged with the same antenna.

[0639] Further, this configuration parameter may also include at least two of the following states: 1T2R, 2T4R, 1-port transmit beam switching, 1-port transmit beam unchanged, 2-port transmit beam switching, 2-port transmit beam unchanged, 4-port. Among them, "1T2R" means that the transmit antennas corresponding to the current 2 SRS resources are different, and each SRS resource includes an SRS port. "2T4R" means that the transmit antennas corresponding to the current 2 SRS resources are different, and each SRS resource includes 2 SRS ports. "1-port transmit beam switching" means that different SRS resources are used for transmit beam scanning, and each SRS resource includes 1 port. "1-port transmit beam switching" means transmit beam scanning of different SRS resources, and each SRSresource includes 1 port. "2-port transmit beam switching" means that different SRS resources are used for transmit beam scanning, and each SRS resource includes 2 ports. "2-port transmit beam switching" means transmit beam scanning of different SRS resources, and each SRS resource includes 2 ports. "4-port" means that this SRS includes 4 ports.

[0640] Among them, "antenna switching" means that different SRS resources in this SRS resource set represent different antennas, "beam switching the same antenna" means that different SRS resources in this SRS resource set represent different beams sent by the same antenna, and "beam switching different antennas" means that different SRS resources in this SRS resource set represent different beams sent by different antennas (different beams can have the same RF weighting factor but are emitted by different antennas, or different beams can have different RF weighting factors, and beams emitted by different antennas are called different beams. The RF weighting factor can also be called a spatial filter, or a spatial filter factor).

[0641] There is a detail here that needs further elaboration. Figure 6As shown, antenna 1 corresponds to n elements (that is, the signal sent by antenna 1 needs to be weighted by [w11, w21, ..., wn1] and then sent out from n elements associated with antenna 1 to form a radio frequency beam), antenna 2 corresponds to n elements, and the weighting factors on the elements in antenna 1 are w1 = [w11, w21, ..., wn1], w2 = [w12, w22, ..., wn2], when w1 = w2, SRS resource 1 is sent by antenna 1, and SRSresource 2 is sent by antenna 2. In one implementation of this embodiment, it can be said that the spatial filtering parameters of SRS resource 1 and SRSresource 2 are the same, or that SRS resource 1 and SRS resource 2 correspond to the same transmission beam but different antennas. In another implementation of this embodiment, it can also be said that the spatial filtering parameters of SRS resource 1 and SRSresource 2 are different, or that SRS resource 1 and SRS resource 2 correspond to different transmission beams and different transmitting antennas.

[0642] "Beam unchanged, same antenna" means that different SRS resources in this SRS resource set are repeated transmissions of the same beam and the same antenna.

[0643] "The antenna switching beam is the same" means that different SRS resources correspond to different antennas or antenna groups and correspond to the same RF weighting factor (or spatial filtering factor), such as Figure 6 As shown, SRS resource1 and SRS resource2 correspond to different antennas, but the RF weighting factor w1=w2. "Antenna switching beams are different' SRS resource1 and SRSresource2 correspond to different antennas, but the RF weighting factors w1 and w2 are different.

[0644] In the above description, the configuration parameter X is configured in the SRS resource set, and this embodiment does not exclude the configuration parameter X being configured in the SRS resource.

[0645] In this embodiment, the transmission beam may also be referred to as a spatial filtering parameter.

[0646] Preferred embodiment y+1:

[0647] In this embodiment, there is a parameter Y in the configuration of an SRS resource set, parameter Y is an antenna switching configuration parameter, or parameter Y is a joint coding configuration parameter of antenna switching and beam management, parameter Y is a shared configuration parameter of antenna switching and beam management.

[0648] Furthermore, the configurable range of parameter Y or whether parameter Y exists is determined according to at least one of the following parameters: the multiplexing method between SRS resources, the number of SRS resources included in this SRS resource set, the number of ports included in each SRS resource in the SRS resource set, and the minimum time interval between different SRS resources in the SRS resource set.

[0649] Or Y is jointly encoded with at least one of the following parameters: the multiplexing method between SRS resources, the number of SRS resources included in this SRSresource set, the number of ports included in each SRS resource in the SRS resource set, and the minimum time interval between different SRS resources in the SRS resource set.

[0650] Furthermore, when FDM is used as the multiplexing mode between SRS resources, Y cannot be configured as the antenna switching mode, that is, different SRS resources in the SRS resource set cannot be used for switching between different antennas.

[0651] Further, when the number of SRS resources included in the SRS resource set belongs to a predetermined set (for example, the predetermined set is {2, 4}, or the predetermined set is {2}), the configurable range of Y is range 1, and the number of SRS resources included in the SRS resource set does not belong to the predetermined set (for example, the predetermined set is {2, 4}, or the predetermined set is {2}), the configurable range of Y is range 2, and optionally range 2 is a subset of range 1. For example, range 1 is {0-4}, and range 2 is {1-4}. The above configurable range is a numerical value, and this embodiment does not exclude the configurable range being a set composed of status bits.

[0652] Further, when the number of ports included in each SRS resource in the SRS resource set belongs to a predetermined set (for example, the predetermined set is {1}, or the predetermined set is {1,2}), the configurable range of Y is range 3, otherwise the configurable range of Y is range 4, and optionally range 4 is a subset of range 3. For example, range 3 is {0-5}, and range 4 is {2-5}. The above configurable range is a numerical value, and this embodiment does not exclude the configurable range being a set composed of state bits.

[0653] Further, when the minimum time interval between different SRS resources in the SRS resource set is greater than a predetermined threshold, the configurable range of Y is range 5, otherwise the configurable range of Y is range 6, and optionally range 6 is a subset of range 5. For example, range 5 is {0-5}, and range 6 is {2-5}. The above configurable range is a numerical value, and this embodiment does not exclude that the configurable range is a set composed of state bits.

[0654] Preferred embodiment z

[0655] Simplify features:

[0656] Within the same carrier, the power of the transmitted channel and / or signal is adjusted symbol by symbol to meet:

[0657] The maximum power limit of the carrier;

[0658] The same type of channels or signals between multiple symbols in the same slot maintain the same non-zero power or non-zero power spectral density.

[0659] Within multiple carriers, the power of the transmitted channels and / or signals is adjusted on a symbol-by-symbol basis to satisfy:

[0660] Maximum power limits for multiple carriers;

[0661] The same type of channels or signals between multiple symbols in the same slot in the same carrier maintain the same non-zero power or non-zero power spectral density.

[0662] When multiple carriers are transmitting uplink simultaneously, the process of determining the transmission power has at least one of the following characteristics:

[0663] 1. Calculate the power of all transmissions on each carrier, denoted as Pc,x,ch, where c is the CC number, x is the OFDM symbol number in the slot, and ch is the channel or signal, which can be PUSCH, L-PUCCH, short PUCCH (S-PUCCH), SRS, etc.

[0664] 2. Determine symbol by symbol on each carrier whether the sum of the power required for all transmissions on the symbol within the carrier exceeds the maximum power limit allowed by the carrier;

[0665] 3. Within the carrier, for the symbol exceeding the maximum allowable power limit, the transmit power of all transmissions on the symbol within the carrier is processed according to a predefined rule, which is recorded as P'c,x,ch.

[0666] The predefined rules include: ensuring that high-priority transmissions get power first according to channel and signal priorities, for example, PUCCH has a higher priority than PUSCH, PUSCH has a higher priority than SRS, PUSCH containing uplink control information UCI has a higher priority than PUSCH without UCI, and PUSCH is compared according to the service priority of transmission, such as PUSCH containing URLLC service has a higher priority than PUSCH containing eMBB, etc. The remaining power is allocated among the remaining transmissions with lower priorities. If there are multiple transmissions with the same priority, the power of multiple transmissions is reduced in the same proportion, or no power is allocated to some transmissions, that is, the corresponding P'c,x,ch is zero.

[0667] In the carrier, in a slot, the same type of transmission between multiple symbols maintains the same power. If the power on some symbols is zero, it may not be consistent with the power of other symbols. The method includes one of the following: taking the minimum value of the transmission power P'c,x,ch of the same type of all symbols; taking the non-zero minimum value of the transmission P'c,x,ch of the same type of all symbols.

[0668] When the slot lengths of all carriers are the same, it is determined symbol by symbol on all carriers whether the sum of all transmission powers of all carriers on the symbol exceeds the maximum power limit allowed by the UE;

[0669] The power sum is P'c,x,ch, where x is fixed to the number of the symbol currently being judged, and the c and ch items in P'c,x,ch are traversed and summed.

[0670] For symbols that exceed the maximum allowable power limit, the transmit power of all transmissions on the symbol is processed according to predefined rules, denoted as P”c,x,ch.

[0671] The predefined rules include: ensuring that high-priority transmissions get power first according to channel and signal priority, and the remaining power is distributed among the remaining transmissions with lower priorities. If there are multiple transmissions of the same priority, the power of multiple transmissions is reduced in the same proportion, or no power is allocated to some transmissions, that is, the corresponding P"c,x,ch is zero.

[0672] In a slot, in each carrier, the same type of transmission between multiple symbols maintains the same power. If the power on some symbols is zero, it may not be consistent with the power of other symbols. The method includes one of the following: taking the minimum value of the transmission power P"c,x,ch of the same type of all symbols; taking the non-zero minimum value of the transmission P"c,x,ch of the same type of all symbols.

[0673] When the slot lengths of multiple carriers are different, the multiple carriers are grouped according to the slot lengths, and the guaranteed power is set for each group. Each group of carriers independently performs the multi-carrier transmit power processing of the above features 1 to 7. Whether the power between carrier groups can be shared and the sharing method are determined by the base station configuration or according to predefined rules.

[0674] The method or predefined rule for configuring the base station includes:

[0675] Configuration 1: Power allocation cannot be shared between multiple carrier groups, that is, the guaranteed power of multiple groups cannot be occupied by other groups. The remaining power outside the guaranteed power of multiple groups can be occupied by the first transmission or the transmission with the first determined transmission time.

[0676] Configuration 2: If it is foreseeable that some groups will not transmit within the current transmission time range, the guaranteed power of the carrier groups that have not transmitted can be shared by other groups. For example, when calculating the power of the short slot carrier group, if there is no transmission in the long slot, it can at least occupy the guaranteed power set for the remaining time of the long slot carrier group. If it is not foreseeable whether there will be transmission within the current transmission time range, the guaranteed power must be reserved.

[0677] For the two CGs (Master Cell Group and Secondary Cell Group) of dual connection, guaranteed power is set for each CG respectively, and how the power is shared among multiple carriers between CGs is configured by the base station or determined according to predefined rules.

[0678] The method or predefined rule for configuring the base station includes:

[0679] In configuration one, the power allocation can be shared between two CGs, and the power allocation priority is determined according to the channel and transmission priority.

[0680] Configuration 1: The power allocation cannot be shared between two CGs, that is, the guaranteed power portion of a CG cannot be occupied by other groups.

[0681] Configuration 2: If it is known that another CG will not transmit within the current transmission time range, the guaranteed power of the CG that did not transmit can be shared by other groups. If it is not known whether there will be transmission within the current transmission time range, the guaranteed power must be reserved for the other CG.

[0682] The symbols refer to OFDM symbols.

[0683] The carrier may also be one of the following: a component carrier, a cell, wherein a cell includes various types of cells, such as a serving cell, a primary cell, a secondary cell, a primary secondary cell, a PUCCH-SCell, etc.

[0684] The carrier may also be replaced by a BWP (BandWidth Partial) or a BWP group.

[0685] Preferred embodiment z+1 (power control in the case of carrier aggregation CA)

[0686] Since NR supports time and frequency division between different types of channels and signals, such as L-PUCCH (long PUCCH), S-PUCCH (short PUCCH), PUSCH, SRS, the following combinations or subsets thereof may be possible:

[0687] (L-PUCCH and PUSCH frequency division multiplexing) and SRS time division multiplexing, and then with S-PUCCH time division multiplexing, such as Figure 7 shown.

[0688] Since the start and end symbol positions of each channel may be different, the information and signal types carried by the symbols in a slot may be different. Therefore, power control and PHR (power headroom report) need to be calculated symbol by symbol.

[0689] In one slot, each symbol is calculated.

[0690] In addition, the content carried by the same type of channels may have different priorities. For example, the same type of PUCCH carrying ACK and carrying CQI may have different priorities, and PUSCH carrying eMBB and URLLC may have different priorities. Generally, the transmission power of high-priority channels and services should be guaranteed.

[0691] Therefore, even for the simpler scenarios in NR CA, with the same numerology (physical frame structure related parameters) and synchronized NR CA, power sharing is more complicated than LTE because each CC contains the above channel combination and their respective start and end positions may be different.

[0692] NR's CA power control should be calculated and compared symbol by symbol, and the power allocation on multiple CCs should be determined based on priority. In the case of insufficient total power, the transmission power of high-priority channels (PUCCH) and services (URLLC) needs to be guaranteed. On the same CC, the same channel power between different symbols in a slot should be guaranteed to be consistent.

[0693] The power sharing mechanism of NR CA is described as follows:

[0694] 1. Calculate the power Pc,x,ch required for each channel on each symbol of each CC of the UE, and calculate whether each symbol on each CC exceeds Pcmax,c, that is, check whether there is insufficient power for any symbol. c is the CC number, x is the number of the OFDM symbol in the slot, and ch is the channel or signal, which can be PUSCH, L-PUCCH, S-PUCCH, SRS, etc.

[0695] For example, for carrier aggregation of three CCs, assuming that the time-frequency resources allocated to each channel in a slot are as follows: Figure 8 shown.

[0696] Table 1 below shows the power required for channels and signals on different symbols in one slot of the three CCs.

[0697]

[0698] Table 1

[0699] 2. For each CC, if there are symbols with insufficient power, adjust the power P'c,x,ch required for each channel in the corresponding CC according to the priority, so that each symbol on each CC does not exceed its own Pcmax,c.

[0700] Assume that the power sum of PUSCH and L-PUCCH of CC0 exceeds P cmax,CC1 , then PUSCH is adjusted, and the adjusted value is marked with P', as shown in Table 2.

[0701]

[0702] Table 2

[0703] 3. Calculate the sum of the transmit power of all CC channels on each symbol and compare whether it exceeds Pcmax, that is, check whether there is insufficient power on any symbol in the sum of all CCs. If there is insufficient power on any symbol, first adjust the power of the high-priority channels and signals on these symbols, that is, ensure that the transmit power of high-priority channels or services is set as required, and the remaining power is allocated to other channels and signals with lower priority.

[0704] Assuming that the total power of the two symbols x=2 and x=3 exceeds Pcmax,CC1, the power of PUCCH is prioritized, and the power of PUSCH is further reduced, marked with "P", as shown in Table 3.

[0705]

[0706] Table 3

[0707] 4. If there are multiple channels and signals with lower priorities, they need to be reduced in proportion, and the power allocated to the channels on some CCs may be zero.

[0708] 5. The same channel and signal on the same CC maintain consistent power in different symbols, as shown in Table 4.

[0709]

[0710]

[0711] Table 4

[0712] For NR CAs with different and synchronized numerologies:

[0713] Different numerologies result in different symbol lengths and slot lengths. When calculating the power of a long slot, we may know the power requirement of the current short slot, but the power requirement of subsequent short slots is unpredictable. It is necessary to consider reserving a certain amount of power for subsequent short slots and use extended PCM2, that is, grouping by numerology and configuring guaranteed power for each group.

[0714] In this application, the technical features in various embodiments can be combined and used in one embodiment without conflict. Each embodiment is only the best implementation method of this application and is not used to limit the protection scope of this application.

[0715] Those skilled in the art will appreciate that all or part of the steps in the above method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits, and accordingly, each module / unit in the above embodiment can be implemented in the form of hardware or in the form of software function modules. The present invention is not limited to any specific form of combination of hardware and software.

[0716] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power control method, include: Receiving, by a user equipment UE, a parameter in an open-loop power control parameter set for at least one uplink transmission, wherein the open-loop power control parameter set is indicated by an open-loop power control parameter set index; The following association is received by the UE: an association between the open-loop power control parameter set index and the reference signal index, and an association between a closed-loop power control process identifier and the reference signal index; resetting a local closed-loop power adjustment amount corresponding to a closed-loop power control process identifier associated with the received open-loop power control parameter set index, Wherein, the closed-loop power control process is indicated by the closed-loop power control process identifier; The uplink transmission includes at least one of the following: transmission of a physical uplink shared channel; and Transmission of physical uplink control channel.

2. The power control method according to claim 1, in, The parameters in the open-loop power control parameter set for uplink transmission include at least one of the following: target received power; and Path loss factor.

3. A user device, comprising a processor and a memory, wherein the processor is configured to read instructions from the memory to implement the following operations: receiving a parameter in a set of open-loop power control parameters for at least one uplink transmission, in, The open-loop power control parameter set is indicated by the open-loop power control parameter set index; Receive the following associations: an association between the open-loop power control parameter set index and the reference signal index, and an association between a closed-loop power control process identifier and the reference signal index; resetting a local closed-loop power adjustment amount corresponding to a closed-loop power control process identifier associated with the received open-loop power control parameter set index, Wherein, the closed-loop power control process is indicated by the closed-loop power control process identifier; The uplink transmission includes at least one of the following: transmission of a physical uplink shared channel; and Transmission of physical uplink control channel.

4. The user equipment according to claim 3, in, The parameters of the open-loop power control parameter set for uplink transmission include at least one of the following: target received power; and Path loss factor.

5. A computer storage medium for storing computer executable code, in, After being executed by at least one processor, the code enables the at least one processor to implement the method according to any one of claims 1 to 2.

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