Uplink power determination method and device

Abstract

The present invention discloses an uplink power determination method and device, which belongs to the field of communication technology. The uplink power determination method of the present invention includes: a terminal determining uplink power based on first information; transmitting an uplink channel or signal based on the uplink power; wherein the first information includes at least one of the following: a transmission direction of at least one subband in a first time unit; whether a guard band exists in the first time unit; a positional relationship between an uplink transmission resource and a downlink subband or a flexible subband; a position of the uplink transmission resource in the subband; and a power control parameter.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a method and device for determining uplink power. Background Art

[0002] In the case of full-duplex or flexible-duplex networks, in order to avoid interference between uplink and downlink, a guard band is usually introduced between uplink and downlink subbands to avoid interference between uplink and downlink.

[0003] Even if guard bands exist between subbands, a signal transmitted by a terminal in one subband may leak into other subbands due to leakage, such as inband emission. For example, a terminal performing uplink transmission may interfere with downlink reception of other terminals.

[0004] Considering the problem of cross-link interference (CLI), the uplink power determination method in related technologies can no longer meet the application requirements. Therefore, it is necessary to provide a new uplink power determination method to impose certain restrictions on the uplink power of the terminal in the uplink subband. Summary of the Invention

[0005] The embodiments of the present application provide a method and device for determining uplink power, which provide a new solution for how a terminal determines uplink power.

[0006] In a first aspect, a method for determining uplink power is provided, comprising: a terminal determining uplink power based on first information; sending an uplink channel or signal based on the uplink power; wherein the first information includes at least one of the following: a transmission direction of at least one subband on a first time unit; whether there is a guard band on the first time unit; a positional relationship between an uplink transmission resource and a downlink subband or a flexible subband; a position of the uplink transmission resource in the subband; and a power control parameter.

[0007] In a second aspect, a method for determining uplink power is provided, comprising: a network-side device sends configuration information; wherein, the configuration information is used to configure power control parameters, the power control parameters are used by the terminal to determine the uplink power, and each subband or subband set is configured with its own power control parameters.

[0008] According to a third aspect, an uplink power determination device is provided, comprising: a power determination module for determining the uplink power based on first information; a transmission module for sending an uplink channel or signal based on the uplink power; wherein the first information includes at least one of the following: a transmission direction of at least one subband on a first time unit; whether there is a guard band on the first time unit; a positional relationship between uplink transmission resources and a downlink subband or a flexible subband; a position of the uplink transmission resource in the subband; and a power control parameter.

[0009] In a fourth aspect, an uplink power determination device is provided, comprising: a transmission module for sending configuration information; wherein the configuration information is used to configure power control parameters, the power control parameters are used by the terminal to determine the uplink power, and each subband or subband set is configured with its own power control parameters.

[0010] In a fifth aspect, a terminal is provided, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the method described in the first aspect.

[0011] In the sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is used to determine the uplink power based on first information, and the communication interface is used to send an uplink channel or signal based on the uplink power; wherein the first information includes at least one of the following: the transmission direction of at least one sub-band on the first time unit; whether there is a protection band on the first time unit; the positional relationship between the uplink transmission resource and the downlink sub-band or flexible sub-band; the position of the uplink transmission resource in the sub-band; and the power control parameter.

[0012] In the seventh aspect, a network side device is provided, which includes a processor, a memory, and a program or instruction stored in the memory and runnable on the processor, and when the program or instruction is executed by the processor, the method described in the second aspect is implemented.

[0013] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to send configuration information; wherein the configuration information is used to configure power control parameters, and the power control parameters are used by the terminal to determine the uplink power, and each subband or subband set is configured with its own power control parameters.

[0014] In a ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the method described in the first aspect or the method described in the second aspect is implemented.

[0015] In the tenth aspect, a chip is provided, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0016] In the eleventh aspect, a computer program / program product is provided, which is stored in a non-volatile storage medium, and the program / program product is executed by at least one processor to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0017] In an embodiment of the present application, a terminal determines uplink power based on first information; the first information includes at least one of the following: the transmission direction of at least one subband in the first time unit; the presence of a guard band in the first time unit; the positional relationship between the uplink transmit resource and the downlink subband or flexible subband; the position of the uplink transmit resource in the subband; and a power control parameter. This embodiment of the present application can determine transmit power based on the specific circumstances of the subband, thereby reducing cross-link interference in the system and improving communication system performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application;

[0019] Figure 2 is a schematic flow chart of a method for determining uplink power according to an embodiment of the present application;

[0020] Figure 3 is a schematic diagram of subbands on a time unit according to an embodiment of the present application;

[0021] Figure 4 is a schematic diagram of subbands on a time unit according to an embodiment of the present application;

[0022] Figure 5 2 is a schematic diagram of an application of a method for determining uplink power according to an embodiment of the present application;

[0023] Figure 6 This is a schematic diagram of an application of the uplink power determination method according to an embodiment of the present application.

[0024] Figure 7 This is a schematic diagram of an application of the uplink power determination method according to an embodiment of the present application.

[0025] Figure 8 This is a schematic diagram of an application of the uplink power determination method according to an embodiment of the present application.

[0026] Figure 9 is a schematic flow chart of a method for determining uplink power according to an embodiment of the present application;

[0027] Figure 10 is a structural diagram of an uplink power determination device according to an embodiment of the present application;

[0028] Figure 11 is a structural diagram of an uplink power determination device according to an embodiment of the present application;

[0029] Figure 12 is a structural diagram of a communication device according to an embodiment of the present application;

[0030] Figure 13 is a schematic structural diagram of a terminal according to an embodiment of the present application;

[0031] Figure 14 It is a structural diagram of the network side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0033] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0034] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions. These technologies can also be applied to applications other than NR system applications, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0035] Figure 1A schematic diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or a user terminal (UE). The terminal 11 can be a mobile phone, a tablet computer, a laptop computer or a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device or a vehicle-mounted device (VUE), a pedestrian terminal (PUE) and other terminal-side devices. Wearable devices include: smart watches, bracelets, headphones, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 can be a base station or a core network, where the base station can be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a B node, an evolved B node (eNB), a next generation node B (gNB), a home B node, a home evolved B node, a WLAN access point, a WiFi node, a transmitting and receiving point (Transmitting Receiving Point, TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

[0036] The uplink power determination method and device provided in the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0037] like Figure 2 As shown, an embodiment of the present application provides an uplink power determination method 200, which can be executed by a terminal. In other words, the method can be executed by software or hardware installed in the terminal, and the method includes the following steps.

[0038] S202: The terminal determines the uplink power based on the first information; the first information includes at least one of the following: the transmission direction of at least one subband on the first time unit; whether there is a protection band on the first time unit; the positional relationship between the uplink transmission resource and the downlink subband or flexible subband; the position of the uplink transmission resource in the subband; and the power control parameter.

[0039] In one example, the first information includes a transmission direction of at least one subband in a first time unit and / or whether a guard band exists in the first time unit. The transmission direction of the subband may include downlink (D), uplink (U), or flexible (F), and the first time unit may include at least one symbol, at least one time slot, at least one subslot, or at least one subframe.

[0040] In this example, for example, there are multiple subbands on the first time unit and these multiple subbands include downlink or flexible subbands, and / or there is a protection band on the first time unit, then the terminal determines to use the second transmission power; wherein, the second transmission power is less than or equal to the first transmission power, and the first transmission power can be a transmission power determined according to the uplink power determination method in the relevant technology.

[0041] In this example, the second transmission power used by the terminal is less than or equal to the first transmission power. This example is equivalent to reducing the transmission power, avoiding interference of uplink transmission on reception of other terminals on the downlink subband, and improving communication system performance.

[0042] In another example, the first information includes a positional relationship between an uplink transmission resource and a downlink subband or a flexible subband. In S202, if the frequency interval between the subband where the uplink transmission resource is located and the downlink subband or the flexible subband is less than or equal to a preset frequency threshold, determining to use a third transmission power; wherein the third transmission power is less than or equal to the first transmission power.

[0043] In this example, the third transmission power used by the terminal is less than or equal to the first transmission power. This example is equivalent to reducing the transmission power, avoiding interference of uplink transmission on reception of other terminals on the downlink subband, and improving communication system performance.

[0044] In another example, the first information includes a location of an uplink transmission resource in a subband. In S202, if the uplink transmission resource includes at least one resource block or resource element at a subband edge, determining to use a fourth transmission power is performed; wherein the fourth transmission power is less than or equal to the first transmission power.

[0045] In this example, the fourth transmission power used by the terminal is less than or equal to the first transmission power. This example is equivalent to reducing the transmission power, avoiding interference of uplink transmission on reception of other terminals on the downlink subband, and improving communication system performance.

[0046] In another example, the first information includes a power control parameter. In S202, the terminal may determine the uplink power according to the power control parameter.

[0047] As mentioned above, the first information includes at least one of the following five information 1) to 5): 1) the transmission direction of at least one subband on the first time unit; 2) whether there is a protection band on the first time unit; 3) the positional relationship between the uplink transmission resource and the downlink subband or flexible subband; 4) the position of the uplink transmission resource in the subband; 5) power control parameters.

[0048] The above examples all use one or two of the five types of information as examples to describe how the terminal determines the uplink power. In practice, the terminal may also determine the uplink power based on a combination of two, three, four or five types of information.

[0049] For example, the terminal determines the uplink power based on 4) the position of the uplink transmission resource in the subband and 5) the power control parameter; for another example, the terminal determines the uplink power based on 2) whether there is a protection band on the first time unit, 3) the positional relationship between the uplink transmission resource and the downlink subband or flexible subband, and 5) the power control parameter.

[0050] S204: Send an uplink channel or signal according to the uplink power.

[0051] In this example, the terminal can send uplink channels or signals on the uplink subband based on the determined uplink power. The uplink channels may include the Physical Random Access Channel (PRACH), the Physical Uplink Control Channel (PUCCH), the Physical Uplink Shared Channel (PUSCH), etc.; the uplink signals may include the Sounding Reference Signal (SRS), etc.

[0052] In an embodiment of the present application, a terminal provides an uplink power determination method, wherein the terminal determines uplink power based on first information; the first information includes at least one of the following: the transmission direction of at least one subband in a first time unit; the presence of a guard band in the first time unit; the positional relationship between an uplink transmission resource and a downlink subband or a flexible subband; the position of the uplink transmission resource within a subband; and a power control parameter. This embodiment of the present application can determine the transmission power based on the specific conditions of the subband, thereby reducing cross-link interference in the system and improving communication system performance.

[0053] In embodiment 200, the terminal determines the uplink power according to the first information, which will be described below with reference to several specific examples. Before introducing specific examples, the time unit, subband, guard band, etc. mentioned in various embodiments of the present application are first introduced.

[0054] like Figure 3 As shown, Figure 3 The diagram schematically shows a spectrum diagram when the network side device is flexible / full duplex. Figure 3 For the symmetrical spectrum of Frequency Division Duplexing (FDD), the uplink or downlink spectrum of FDD can be semi-statically configured or dynamically indicated as downlink or uplink transmission in certain time units (such as slot / symbol).

[0055] In the third to fifth time units, the uplink spectrum is configured as downlink; in the sixth time unit, the downlink spectrum is configured as uplink. Figure 3 Two sub-bands are schematically shown, but in practice, the number of sub-bands is not limited thereto. In addition, in the frequency domain, guard bands are provided between these sub-bands.

[0056] like Figure 4 As shown, Figure 4 The diagram schematically shows a spectrum diagram when the network side device is flexible / full duplex. Figure 4 For the asymmetric spectrum of Time Division Duplexing (TDD), different frequency domain resources on certain time units (such as slot / symbol) of TDD can be semi-statically configured or dynamically indicated to have both uplink transmission and downlink reception.

[0057] like Figure 4 As shown in the 3rd to 7th time units of FIG, there are both uplink sub-bands and downlink sub-bands in these 5 time units. Figure 4Four sub-bands are schematically shown, but in practice, the number of sub-bands is not limited to this. In addition, in the frequency domain, guard bands can be set between these sub-bands. Figure 4 Guard bands are not shown.

[0058] Regarding the above-mentioned symmetric spectrum or asymmetric spectrum, before S202, the terminal can also receive indication information, which is used to notify the terminal of the transmission / reception direction on the time unit, that is, which time slots / symbols; on the frequency, that is, which subbands (subband), sub-carriers (sub-carrier), resource blocks (RB), that is, uplink (U), downlink (D) or flexible (flexible, F), etc.

[0059] The indication information may be higher layer signaling, Media Access Control-Control Element (MAC CE) signaling, or downlink control information (DCI).

[0060] In various embodiments of the present application, a subband may include one or more resource blocks (RBs), which may also be referred to as a resource block set (RB set). The subbands mentioned in various embodiments of the present application may represent multiple consecutive RBs, and therefore, the subbands may also be described by RB sets. The guard bands mentioned in various embodiments of the present application represent frequency domain resources where the terminal does not transmit or receive signals / channels. The frequency domain resources may be described by the number of RBs / resource elements (REs), the position of RBs / REs, or a frequency range.

[0061] It should also be noted that for different time units (such as slot / symbol / subframe), the subband direction configuration may be different, and the subband size may also be different. The first time unit in each embodiment of the present application can be one or more determined time units, where "first" is only for the convenience of distinction and does not represent any other specific meaning.

[0062] Example 1

[0063] The first information includes a transmission direction of at least one subband in a first time unit and / or whether a guard band exists in the first time unit. The terminal determines the uplink power based on the first information, including: if the first time unit includes a downlink subband or a flexible subband and / or a guard band exists in the first time unit, determining to use a second transmit power; wherein the second transmit power is less than or equal to the first transmit power.

[0064] In the case where the first information includes whether a guard band exists in the first time unit, optionally, the first information may be specifically replaced by the size of the guard band in the first time unit.

[0065] The first transmit power includes at least one of the following:

[0066] 1) Transmit power when all subbands in the first time unit are uplink subbands or flexible subbands.

[0067] 2) Transmit power when no downlink subband or guard band exists in the first time unit.

[0068] 3) Transmit power when the first time unit is an uplink time unit.

[0069] 4) The transmit power is determined according to the power control parameters configured in the uplink bandwidth part (BandWidth Part, BWP).

[0070] As mentioned above, the second transmit power is less than or equal to the first transmit power. Optionally, the second transmit power can be obtained by subtracting a preset value from the first transmit power.

[0071] Optionally, the difference between the second transmit power and the first transmit power is determined based on at least one of the following 1) to 4).

[0072] 1) Preset value or preset value range.

[0073] 2) The value configured or indicated by the network-side device.

[0074] 3) A value determined according to the number and / or position of downlink subbands or flexible subbands.

[0075] 4) A value determined according to the size of the guard band.

[0076] In this example, the second transmission power used by the terminal is less than or equal to the first transmission power. This example is equivalent to reducing the transmission power, avoiding interference of uplink transmission on reception of other terminals on the downlink subband, and improving communication system performance.

[0077] Example 2

[0078] The first information includes a positional relationship between an uplink transmission resource and a downlink subband or a flexible subband. The terminal determines the uplink power based on the first information, including: if a frequency interval between the subband where the uplink transmission resource is located and the downlink subband or the flexible subband is less than or equal to a preset frequency threshold, determining to use a third transmission power; wherein the third transmission power is less than or equal to the first transmission power.

[0079] In this example, if there is a downlink or flexible subband in the first time unit, and the frequency interval between the subband for transmission by the terminal and the downlink subband is less than or equal to the preset frequency threshold, the third transmission power is used for transmission.

[0080] Optionally, the frequency interval includes one of the following: at least one subcarrier, at least one resource block, at least one subband, and an absolute frequency width.

[0081] For details about the first transmission power, please refer to the introduction of the above embodiment.

[0082] As mentioned above, the third transmit power is less than or equal to the first transmit power. Optionally, the third transmit power can be obtained by subtracting a preset value from the first transmit power.

[0083] Optionally, the difference between the third transmit power and the first transmit power is determined based on at least one of the following 1) to 4).

[0084] 1) Preset value or preset value range.

[0085] 2) The value configured or indicated by the network-side device.

[0086] 3) A value determined according to the number and / or position of downlink subbands or flexible subbands.

[0087] 4) A value determined according to the size of the guard band.

[0088] In this example, the third transmission power used by the terminal is less than or equal to the first transmission power. This example is equivalent to reducing the transmission power, avoiding interference of uplink transmission on reception of other terminals on the downlink subband, and improving communication system performance.

[0089] Example 3

[0090] The first information includes a position of an uplink transmission resource in a subband. The terminal determines the uplink power according to the first information, including: if the uplink transmission resource includes at least one resource block or resource element at a subband edge, determining to use a fourth transmission power; wherein the fourth transmission power is less than or equal to the first transmission power.

[0091] In this example, if the frequency domain resources for uplink transmission include X RBs or REs at the edge of a subband, the terminal uses the fourth transmission power for transmission, where X is a positive integer.

[0092] For details about the first transmission power, please refer to the introduction of the above embodiment.

[0093] As mentioned above, the fourth transmit power is less than or equal to the first transmit power. Optionally, the fourth transmit power can be obtained by subtracting a preset value from the first transmit power.

[0094] Optionally, the difference between the fourth transmit power and the first transmit power is determined based on at least one of the following 1) to 4).

[0095] 1) Preset value or preset value range.

[0096] 2) The value configured or indicated by the network-side device.

[0097] 3) A value determined according to the number and / or position of downlink subbands or flexible subbands.

[0098] 4) A value determined according to the size of the guard band.

[0099] In this example, the fourth transmission power used by the terminal is less than or equal to the first transmission power. This example is equivalent to reducing the transmission power, avoiding interference of uplink transmission on reception of other terminals on the downlink subband, and improving communication system performance.

[0100] Example 4

[0101] In this embodiment, the first information includes a power control parameter. In S202, the terminal may determine the uplink power according to the power control parameter.

[0102] Optionally, the power control parameter includes at least one of the following: maximum transmit power; open-loop power control parameter target receive power; path loss compensation factor; path loss reference signal; power adjustment value, which may include a power compensation value or a power backoff value.

[0103] Optionally, before the terminal determines the uplink power based on the first information, the method further includes: receiving configuration information; wherein the configuration information is used to configure the power control parameters, and each subband or subband set is configured with its own power control parameters. That is, the network-side device configures the subband or subband set-specific power control parameters, and the terminal determines the transmit power based on the subband-specific power control parameters.

[0104] To illustrate the uplink power determination method provided in the embodiments of the present application in detail, several specific embodiments will be described below.

[0105] exist Figures 5 to 8 In the diagram, the horizontal direction is the time domain, and the vertical direction is the frequency domain. Squares filled with diagonal lines represent uplinks, and squares filled with small black dots represent downlinks. The time domain length of each square can be one time slot. Figure 5In , we can think of it as having two time units (i.e., 5 squares constitute one time unit), or we can think of it as each square representing one time unit. Figure 5 In the frequency domain, there are four sub-bands, and the sub-bands are guard bands.

[0106] Example 1

[0107] In this embodiment, the terminal determines the transmit power according to the subband / guardband configuration.

[0108] like Figure 5 As shown, in this embodiment, under the condition that at least one of the following conditions is met, the terminal reduces the transmission power, that is, uses the second transmission power.

[0109] Condition 1: If there are multiple subbands in a time unit, and there are downlink or flexible subbands in the multiple subbands.

[0110] Condition 2: A guardband exists on this time unit.

[0111] The terminal then uses a second transmit power, which is reduced by delta compared to the first transmit power, where delta is a value preset or indicated by a network-side device. For details about the first transmit power, please refer to the description of the above embodiment.

[0112] Example 2

[0113] In this embodiment, the terminal determines the transmit power according to the positional relationship between the uplink transmission and downlink subbands.

[0114] In this embodiment, if a downlink or flexible subband exists in the time unit and the frequency interval between the subband in which the terminal transmits and the downlink subband is smaller than a preset threshold, the third transmit power is used for transmission.

[0115] The frequency interval may be X subcarriers, RBs, subbands, or an absolute frequency width. The third transmit power is less than or equal to the first / second transmit power.

[0116] like Figure 6As described above, multiple uplink subbands exist within a carrier or BWP. Some subbands have larger frequency separations from downlink / flexible subbands, while others have smaller frequency separations. One implementation is to use a third transmit power if the adjacent subbands of the subband in which the transmitted signal resides include downlink or flexible subbands. The third transmit power is less than or equal to the first / second transmit power. For details on the first / second transmit power, see the description of the previous embodiment.

[0117] Example 3

[0118] In this embodiment, the terminal determines the transmit power according to a specific transmission position in the subband.

[0119] In this embodiment, the terminal determines the transmit power of the terminal according to the frequency domain resource position of the uplink transmission in the subband.

[0120] If the frequency domain resource for uplink transmission includes the edge X RBs or REs of the subband, the terminal uses the fourth transmission power for transmission, and the fourth transmission power is less than or equal to the first transmission power. Figure 7 As shown, within a subband bandwidth, if the terminal sends a signal in the edge area of the subband, or at least part of the resources overlap with the frequency domain range, the terminal should reduce the transmission power and use the fourth transmission power.

[0121] In the above embodiments 1-3, after the terminal determines the relative power difference, the actual transmit power can be expressed by the following formula:

[0122] For example, for PUSCH, P PUSCH,,c,x (i,j,q d ,)= PUSCH,,c,y (i,j,q d ,)-elta where x>y, x and y are both integers greater than 1, y can be equal to 1, P PUSCH,,, Corresponding to the above-mentioned first transmission power, x can be equal to 2, 3 or 4, corresponding to the above-mentioned second / third / fourth transmission power respectively.

[0123] Alternatively, the transmission power in the related art is determined by taking the smaller value of the two to determine the terminal transmission power, that is, The power backoff value delta can be A fallback of at least one of or

[0124] The methods for determining the transmit power of SRS, PUCCH, and PRACH are similar.

[0125] Example 4

[0126] In this embodiment, the network-side device configures power control parameters for each subband or subband set.

[0127] In the embodiment of the present application, the power control parameters can be configured per BWP (perBWP). When multiple subbands are configured within the BWP, the network side device can also configure the power control parameters persubband (subband combination) specific, and the terminal determines the transmission power based on the subband (combination) specific power control parameters.

[0128] For example, by configuring a smaller open-loop power control parameter target receive power value or changing the configuration of the path loss compensation factor, the transmit power on a specific subband (combination) is reduced.

[0129] like Figure 8 As shown, different subband combinations are configured with different power control configurations, and the terminal adaptively determines the applicable power control parameters according to the uplink, downlink, and flexible subband conditions of the current time unit.

[0130] This embodiment achieves the same technical effects as embodiments 1 and 2. The difference is that embodiments 1 and 2 adjust the transmit power according to preset rules, while embodiment 4 provides a new power control parameter configuration method. The terminal determines the transmit power on each subband based on the configuration of the new power control parameters, that is, the control of cross-link interference is handed over to the network configuration.

[0131] Combination of the above Figure 2 The uplink power determination method according to the embodiment of the present application is described in detail. Figure 9 The uplink power determination method according to another embodiment of the present application is described in detail. It can be understood that the interaction between the network side device and the terminal described in the network side device is the same as Figure 2 The description on the terminal side in the method shown is the same, and to avoid repetition, the relevant description is appropriately omitted.

[0132] Figure 9 This is a schematic diagram of the implementation flow of the uplink power determination method of the embodiment of the present application, which can be applied to network side equipment. Figure 9 As shown, the method 900 includes the following steps.

[0133] S902: The network side device sends configuration information; the configuration information is used to configure power control parameters, which are used by the terminal to determine uplink power. Each subband or subband set is configured with its own power control parameters.

[0134] In this embodiment of the present application, a network-side device sends configuration information; the configuration information is used to configure power control parameters, which are used by the terminal to determine uplink power. Each subband or subband set is configured with its own power control parameter. This embodiment of the present application can determine the transmit power based on the specific conditions of the subband, which is beneficial for reducing cross-link interference in the system and improving communication system performance.

[0135] Optionally, as an embodiment, the method 900 further includes: the network side device receives an uplink channel or signal, and the transmission power of the uplink channel or signal is determined based on a power control parameter in the configuration information.

[0136] Optionally, as an embodiment, the power control parameter includes at least one of the following: maximum transmit power; open-loop power control parameter target receive power; path loss compensation factor; path loss reference signal; power adjustment value.

[0137] It should be noted that the uplink power determination method provided in the embodiments of the present application can be performed by an uplink power determination device, or by a control module in the uplink power determination device for performing the uplink power determination method. In the embodiments of the present application, the uplink power determination device performing the uplink power determination method is used as an example to illustrate the uplink power determination device provided in the embodiments of the present application.

[0138] Figure 10 FIG. 1 is a schematic diagram of the structure of an uplink power determination device according to an embodiment of the present application, which may correspond to a terminal in other embodiments. Figure 10 As shown, the apparatus 1000 includes the following modules.

[0139] The power determination module 1002 may be configured to determine uplink power according to the first information.

[0140] The first information includes at least one of the following: the transmission direction of at least one subband on the first time unit; whether there is a protection band on the first time unit; the positional relationship between the uplink transmission resource and the downlink subband or flexible subband; the position of the uplink transmission resource in the subband; and the power control parameter.

[0141] The transmission module 1004 may be configured to transmit an uplink channel or signal according to the uplink power.

[0142] In an embodiment of the present application, a device determines uplink power based on first information; the first information includes at least one of the following: the transmission direction of at least one subband in a first time unit; the presence of a guard band in the first time unit; the positional relationship between an uplink transmission resource and a downlink subband or a flexible subband; the position of the uplink transmission resource in a subband; and a power control parameter. This embodiment of the present application can determine the transmission power based on the specific circumstances of the subband, thereby reducing cross-link interference in the system and improving communication system performance.

[0143] Optionally, as an embodiment, the power determination module 1002 can be used to: if the first time unit includes a downlink subband or a flexible subband, and / or there is a protection band on the first time unit, determine to use a second transmission power; wherein the second transmission power is less than or equal to the first transmission power.

[0144] Optionally, as an embodiment, the power determination module 1002 can be used to: determine to use a third transmission power if the frequency interval between the subband where the uplink transmission resource is located and the downlink subband or flexible subband is less than or equal to a preset frequency threshold; wherein the third transmission power is less than or equal to the first transmission power.

[0145] Optionally, as an embodiment, the frequency interval includes one of the following: at least one subcarrier, at least one resource block, at least one subband, and an absolute frequency width.

[0146] Optionally, as an embodiment, the power determination module 1002 can be used to: if the uplink transmission resource includes at least one resource block or resource element at the subband edge, determine to use a fourth transmission power; wherein the fourth transmission power is less than or equal to the first transmission power.

[0147] Optionally, as an embodiment, the first transmission power includes at least one of the following: the transmission power when all subbands on the first time unit are uplink subbands or flexible subbands; the transmission power when there is no downlink subband or protection band on the first time unit; the transmission power when the first time unit is an uplink time unit; the transmission power determined according to the power control parameters of the uplink BWP configuration.

[0148] Optionally, as an embodiment, the difference between at least one of the second transmit power, the third transmit power, and the fourth transmit power and the first transmit power is determined based on at least one of the following: a preset value or a preset value range; a value configured or indicated by a network side device; a value determined according to the number and / or position of downlink subbands or flexible subbands; a value determined according to the size of the protection band.

[0149] Optionally, as an embodiment, the power control parameter includes at least one of the following: maximum transmit power; open-loop power control parameter target receive power; path loss compensation factor; path loss reference signal; power adjustment value.

[0150] Optionally, as an embodiment, the transmission module 1004 is further used to: receive configuration information; wherein the configuration information is used to configure the power control parameters, and each subband or subband set is configured with its own power control parameters.

[0151] Optionally, as an embodiment, the uplink channel includes one of the following: PRACH, PUCCH, PUSCH; and the uplink signal includes SRS.

[0152] According to the device 1000 of the embodiment of the present application, the process of the method 200 corresponding to the embodiment of the present application can be referred to, and the various units / modules in the device 1000 and the above-mentioned other operations and / or functions are respectively for implementing the corresponding processes in the method 200, and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be repeated here.

[0153] The uplink power determination device in the embodiments of the present application can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip in a terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal can include but is not limited to the types of terminal 11 listed above, and the non-mobile terminal can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), an ATM, or a self-service machine, etc., which is not specifically limited in the embodiments of the present application.

[0154] The uplink power determination device provided in the embodiment of the present application can achieve Figures 2 to 9 The various processes implemented by the method embodiment achieve the same technical effect and are not described here again to avoid repetition.

[0155] Figure 11 FIG. 1 is a schematic diagram of the structure of an uplink power determination device according to an embodiment of the present application, which may correspond to a network side device in other embodiments. Figure 11 As shown, the apparatus 1100 includes the following modules.

[0156] The transmission module 1102 can be used to send configuration information; wherein, the configuration information is used to configure power control parameters, and the power control parameters are used by the terminal to determine uplink power, and each subband or subband set is configured with its own power control parameters.

[0157] In this embodiment of the present application, apparatus 1100 transmits configuration information; the configuration information is used to configure power control parameters, which are used by a terminal to determine uplink power. Each subband or subband set is configured with its own power control parameter. This embodiment of the present application can determine transmit power based on the specific conditions of the subband, thereby reducing cross-link interference in the system and improving communication system performance.

[0158] Optionally, as an embodiment, the power control parameter includes at least one of the following: maximum transmit power; open-loop power control parameter target receive power; path loss compensation factor; path loss reference signal; power adjustment value.

[0159] Optionally, as an embodiment, the apparatus 1100 may further include other transmission modules for receiving an uplink channel or signal, wherein the transmission power of the uplink channel or signal is determined based on the power control parameter in the configuration information.

[0160] According to the device 1100 of the embodiment of the present application, the process of the method 900 corresponding to the embodiment of the present application can be referred to, and the various units / modules in the device 1100 and the above-mentioned other operations and / or functions are respectively for implementing the corresponding processes in the method 900, and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be repeated here.

[0161] Optional, such as Figure 12 As shown, an embodiment of the present application further provides a communication device 1200, including a processor 1201, a memory 1202, and a program or instruction stored in the memory 1202 and executable on the processor 1201. For example, when the communication device 1200 is a terminal, the program or instruction, when executed by the processor 1201, implements the various processes of the above-mentioned embodiment of the uplink power determination method and can achieve the same technical effect. When the communication device 1200 is a network-side device, the program or instruction, when executed by the processor 1201, implements the various processes of the above-mentioned embodiment of the uplink power determination method and can achieve the same technical effect. To avoid repetition, it will not be described here.

[0162] An embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the processor is used to determine the uplink power based on first information, and the communication interface is used to send an uplink channel or signal based on the uplink power; wherein the first information includes at least one of the following: the transmission direction of at least one sub-band on the first time unit; whether there is a protection band on the first time unit; the positional relationship between the uplink transmission resource and the downlink sub-band or flexible sub-band; the position of the uplink transmission resource in the sub-band; and power control parameters. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Figure 13 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0163] The terminal 1300 includes but is not limited to: a radio frequency unit 1301, a network module 1302, an audio output unit 1303, an input unit 1304, a sensor 1305, a display unit 1306, a user input unit 1307, an interface unit 1308, a memory 1309, and at least some of the components of the processor 1310.

[0164] Those skilled in the art will understand that the terminal 1300 may also include a power supply (such as a battery) to power each component, and the power supply may be logically connected to the processor 1310 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. Figure 13 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here.

[0165] It should be understood that in an embodiment of the present application, the input unit 1304 may include a graphics processing unit (GPU) 13041 and a microphone 13042, and the graphics processor 13041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1306 may include a display panel 13061, and the display panel 13061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1307 includes a touch panel 13071 and other input devices 13072. The touch panel 13071 is also called a touch screen. The touch panel 13071 may include two parts: a touch detection device and a touch controller. Other input devices 13072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0166] In this embodiment of the present application, RF unit 1301 receives downlink data from a network-side device and transmits it to processor 1310 for processing. Furthermore, RF unit 1301 transmits uplink data to the network-side device. Typically, RF unit 1301 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0167] The memory 1309 can be used to store software programs or instructions and various data. The memory 1309 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, at least one application program or instruction required for a function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1309 may include a high-speed random access memory and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device.

[0168] Processor 1310 may include one or more processing units. Optionally, processor 1310 may integrate an application processor and a modem processor. The application processor primarily processes the operating system, user interface, and application programs or instructions, while the modem processor primarily processes wireless communications, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1310.

[0169] The radio frequency unit 1301 may be configured to send an uplink channel or signal according to uplink power.

[0170] Processor 1310 may be configured to determine uplink power based on first information, where the first information includes at least one of the following: a transmission direction of at least one subband in a first time unit; whether a guard band exists in the first time unit; a positional relationship between an uplink transmission resource and a downlink subband or a flexible subband; a position of the uplink transmission resource in a subband; and a power control parameter.

[0171] In an embodiment of the present application, a terminal determines uplink power based on first information; the first information includes at least one of the following: the transmission direction of at least one subband in a first time unit; the presence of a guard band in the first time unit; the positional relationship between an uplink transmission resource and a downlink subband or a flexible subband; the position of the uplink transmission resource in a subband; and a power control parameter. In this embodiment of the present application, transmission power can be determined based on the specific conditions of the subband, which helps reduce cross-link interference in the system and improve communication system performance.

[0172] The terminal 1300 provided in the embodiment of the present application can also implement the various processes of the above-mentioned uplink power determination method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0173] This embodiment of the present application also provides a network-side device, including a processor and a communication interface, the communication interface being configured to send configuration information; wherein the configuration information is used to configure power control parameters, which are used by a terminal to determine uplink power, and each subband or subband set is configured with its own power control parameter. This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation of the aforementioned method embodiment is applicable to this network-side device embodiment and can achieve the same technical effects.

[0174] Specifically, the embodiment of the present application also provides a network side device. Figure 14 As shown, network-side device 1400 includes an antenna 141, a radio frequency device 142, and a baseband device 143. Antenna 141 is connected to radio frequency device 142. In the uplink direction, radio frequency device 142 receives information via antenna 141 and sends the received information to baseband device 143 for processing. In the downlink direction, baseband device 143 processes the information to be transmitted and sends it to radio frequency device 142. Radio frequency device 142 processes the received information and then sends it through antenna 141.

[0175] The frequency band processing device may be located in the baseband device 143 . The method performed by the network-side device in the above embodiment may be implemented in the baseband device 143 . The baseband device 143 includes a processor 144 and a memory 145 .

[0176] The baseband device 143 may include, for example, at least one baseband board on which a plurality of chips are arranged, such as Figure 14 As shown, one of the chips is, for example, a processor 144, which is connected to a memory 145 to call a program in the memory 145 and execute the network-side device operations shown in the above method embodiment.

[0177] The baseband device 143 may further include a network interface 146 for exchanging information with the radio frequency device 142 . The interface may be, for example, a common public radio interface (CPRI).

[0178] Specifically, the network side device of the embodiment of the present application further includes: instructions or programs stored in the memory 145 and executable on the processor 144, and the processor 144 calls the instructions or programs in the memory 145 to execute. Figure 11 The methods executed by the modules shown achieve the same technical effects, so they will not be described here to avoid repetition.

[0179] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned uplink power determination method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0180] The processor may be the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0181] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned uplink power determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0182] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0183] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0184] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network-side device, etc.) to execute the methods described in each embodiment of the present application.

[0185] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A method for determining uplink power, characterized in that: include: The terminal determines the uplink power according to the first information; wherein the first information includes the following two items: The first time unit includes an uplink subband and a downlink subband; Power control parameters; wherein the power control parameters include power control parameters of the uplink subband; sending an uplink channel or signal in an uplink subband on the first time unit according to the uplink power; The terminal determines the uplink power according to the first information, including: when the first time unit includes an uplink subband and a downlink subband, determining the uplink power as a second transmit power according to the power control parameter; The first time unit includes at least one symbol.

2. The method according to claim 1, characterized in that The power control parameter includes at least one of the following: Maximum transmit power; Open-loop power control parameter target received power; Path loss compensation factor; Path loss reference signal; Power adjustment value.

3. The method according to claim 2, characterized in that Before the terminal determines the uplink power according to the first information, the method further includes: Receive configuration information; The configuration information is used to configure the power control parameters.

4. The method according to claim 1, wherein The uplink channel includes one of the following: a physical random access channel PRACH, a physical uplink control channel PUCCH, and a physical uplink shared channel PUSCH; The uplink signal includes a sounding reference signal SRS.

5. A method for determining uplink power, characterized in that: include: The network-side device sends configuration information; The configuration information is used to configure power control parameters, which are used by the terminal to determine uplink power, and each uplink subband is configured with its own power control parameters; The power control parameter is used by the terminal to determine the uplink power, including: the power control parameter is used by the terminal to determine that the uplink power is the second transmit power when the first time unit includes an uplink subband and a downlink subband; The first time unit includes at least one symbol.

6. The method according to claim 5, characterized in that The power control parameter includes at least one of the following: Maximum transmit power; Open-loop power control parameter target received power; Path loss compensation factor; Path loss reference signal; Power adjustment value.

7. An uplink power determination device, characterized in that: include: A power determination module is configured to determine uplink power based on first information, wherein the first information includes the following two items: The first time unit includes an uplink subband and a downlink subband; Power control parameters; wherein the power control parameters include power control parameters of the uplink subband; a transmission module, configured to transmit an uplink channel or signal in an uplink subband on the first time unit according to the uplink power; The power determination module is configured to: determine, when the first time unit includes an uplink subband and a downlink subband, according to the power control parameter, that the uplink power is a second transmit power; The first time unit includes at least one symbol.

8. The device according to claim 7, characterized in that The power control parameter includes at least one of the following: Maximum transmit power; Open-loop power control parameter target received power; Path loss compensation factor; Path loss reference signal; Power adjustment value.

9. The device according to claim 8, characterized in that The transmission module is further configured to: Receive configuration information; The configuration information is used to configure the power control parameters.

10. The device according to claim 7, characterized in that The uplink channel includes one of the following: PRACH, PUCCH, PUSCH; The uplink signal includes SRS.

11. An uplink power determination device, characterized in that: include: Transmission module, used for sending configuration information; The configuration information is used to configure power control parameters, which are used by the terminal to determine uplink power, and each uplink subband is configured with its own power control parameters; The power control parameter is used by the terminal to determine the uplink power, including: the power control parameter is used by the terminal to determine that the uplink power is the second transmit power when the first time unit includes an uplink subband and a downlink subband; The first time unit includes at least one symbol.

12. The device according to claim 11, characterized in that The power control parameter includes at least one of the following: Maximum transmit power; Open-loop power control parameter target received power; Path loss compensation factor; Path loss reference signal; Power adjustment value.

13. A terminal, characterized in that: The method comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the uplink power determination method according to any one of claims 1 to 4.

14. A network side device, characterized in that: The method comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the uplink power determination method according to claim 5 or 6.

15. A readable storage medium, characterized in that The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the uplink power determination method according to any one of claims 1 to 4 is implemented, or the uplink power determination method according to claim 5 or 6 is implemented.

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