Power reduction information determination method and apparatus, bandwidth indication method and apparatus, terminal, and network side device

Abstract

The present application relates to the technical field of communications, and discloses a power reduction information determination method and apparatus, a bandwidth indication method and apparatus, a terminal, and a network side device. The power reduction information determination method in an embodiment of the present application comprises: a terminal receiving a bandwidth indication, the bandwidth indication being used for indicating a virtual bandwidth; and, on the basis of the virtual bandwidth, the terminal determining MPR information.

Description

Method for determining power backoff information, method for indicating bandwidth, device, terminal and network side equipment

[0001] Cross-reference to Related Applications

[0002] The present application claims priority to Chinese Patent Application No. 202411058936.X, filed on August 2, 2024, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application belongs to the technical field of communication, and specifically relates to a method for determining power backoff information, a method for indicating bandwidth, a device, a terminal and a network side equipment. BACKGROUND

[0004] Maximum Power Reduction (MPR) refers to the power backoff value allowed by a terminal to meet the limitation of relevant radio frequency indicators. In some related technologies, MPR information is determined based on the actual channel bandwidth allocated to the terminal, that is, MPR information is evaluated in the worst case, which excessively limits the transmission capability of the terminal and results in poor transmission performance of the terminal. SUMMARY

[0005] Embodiments of the present application provide a method for determining power backoff information, a method for indicating bandwidth, a device, a terminal and a network side equipment, which can solve the problem of poor transmission performance of the terminal.

[0006] In a first aspect, a method for determining power backoff information is provided, comprising:

[0007] receiving, by a terminal, a bandwidth indication, the bandwidth indication being used to indicate a virtual bandwidth;

[0008] determining, by the terminal, MPR information based on the virtual bandwidth.

[0009] In a second aspect, a method for indicating bandwidth is provided, comprising:

[0010] sending, by a network side equipment, a bandwidth indication to a terminal, the bandwidth indication being used to indicate a virtual bandwidth.

[0011] In a third aspect, a device for determining power backoff information is provided, comprising:

[0012] a receiving module configured to receive a bandwidth indication, the bandwidth indication being used to indicate a virtual bandwidth;

[0013] a processing module configured to determine maximum power reduction (MPR) information based on the virtual bandwidth.

[0014] In a fourth aspect, a device for indicating bandwidth is provided, comprising:

[0015] The sending module is configured to send a bandwidth indication to the terminal, the bandwidth indication being used to indicate a virtual bandwidth.

[0016] In a fifth aspect, a power backoff information determination apparatus is provided, which is configured to perform the steps of the power backoff information determination method provided in the embodiments of the present application.

[0017] In a sixth aspect, a bandwidth indication apparatus is provided, which is configured to perform the steps of the bandwidth indication method provided in the embodiments of the present application.

[0018] In a seventh aspect, a terminal is provided, which includes a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the power backoff information determination method provided in the embodiments of the present application.

[0019] In an eighth aspect, a terminal is provided, which includes a processor and a communication interface, the communication interface being configured to receive a bandwidth indication, the bandwidth indication being used to indicate a virtual bandwidth, and the processor being configured to determine maximum power reduction (MPR) information based on the virtual bandwidth.

[0020] In a ninth aspect, a network side device is provided, which includes a processor and a memory, the memory storing programs or instructions executable on the processor, and the programs or instructions, when executed by the processor, implement the steps of the bandwidth indication method provided in the embodiments of the present application.

[0021] In a tenth aspect, a network side device is provided, which includes a processor and a communication interface, the communication interface being configured to send a bandwidth indication to a terminal, the bandwidth indication being used to indicate a virtual bandwidth.

[0022] In an eleventh aspect, a readable storage medium is provided, which stores programs or instructions, the programs or instructions, when executed by a processor, implement the steps of the power backoff information determination method provided in the embodiments of the present application, or implement the steps of the bandwidth indication method provided in the embodiments of the present application.

[0023] In a twelfth aspect, a wireless communication system is provided, which includes a terminal and a network side device, the terminal being configured to perform the steps of the power backoff information determination method provided in the embodiments of the present application, and the network side device being configured to perform the steps of the bandwidth indication method provided in the embodiments of the present application.

[0024] In a thirteenth 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 configured to run programs or instructions to implement the power backoff information determination method provided in the embodiments of the present application or to implement the bandwidth indication method provided in the embodiments of the present application.

[0025] In a fourteenth aspect, a computer program / program product is provided, which is stored in a storage medium, and is executed by at least one processor to implement the steps of the power backoff information determination method provided in the embodiments of the present application, or is executed by at least one processor to implement the steps of the bandwidth indication method provided in the embodiments of the present application.

[0026] In the embodiments of the present application, a terminal receives a bandwidth indication, and the bandwidth indication is used to indicate a virtual bandwidth; and the terminal determines MPR information based on the virtual bandwidth. Since the MPR information is determined based on the virtual bandwidth, the MPR information can be avoided to be evaluated in the worst scenario, which is beneficial to improve the transmission capability limitation of the terminal, and further improve the transmission performance of the terminal. BRIEF DESCRIPTION OF DRAWINGS

[0027] FIG. 1 is a schematic diagram of a system provided in the embodiments of the present application;

[0028] FIG. 2 is a schematic diagram of an MPR limit table provided in the embodiments of the present application;

[0029] FIG. 3 is a schematic diagram of a bandwidth provided in the embodiments of the present application;

[0030] FIG. 4 is a flowchart of a power backoff information determination method provided in the embodiments of the present application;

[0031] FIG. 5 is a flowchart of a bandwidth indication method provided in the embodiments of the present application;

[0032] FIG. 6 is a structural diagram of a power backoff information determination apparatus provided in the embodiments of the present application;

[0033] FIG. 7 is a structural diagram of a bandwidth indication apparatus provided in the embodiments of the present application;

[0034] FIG. 8 is a structural diagram of a communication device provided in the embodiments of the present application;

[0035] FIG. 9 is a structural diagram of a terminal provided in the embodiments of the present application;

[0036] FIG. 10 is a structural diagram of a network side device provided in the embodiments of the present application. DETAILED DESCRIPTION

[0037] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly described. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art are within the scope of the present application.

[0038] The terms "first", "second", and the like in the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are generally a class, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "or" in the present application means at least one of the connected objects. For example, the protection scope of "A or B" at least covers three schemes, namely, scheme one: including A and not including B; scheme two: including B and not including A; scheme three: including A and B. In addition, the terms "A and / or B", "at least one of A and B", "at least one of A or B" also at least cover the above three schemes, respectively. The character " / " generally represents that the objects before and after are in an "or" relationship.

[0039] The term "indication" in the present application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). Among them, the direct indication can be understood as that the sender explicitly informs the receiver of specific information, operation to be performed or request result, etc. in the sent indication; the indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or judges and determines the operation to be performed or the request result according to the judgment result.

[0040] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, 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) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems. th

[0041] ​FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a terminal-side device such as a mobile phone, a Tablet Personal Computer, a Laptop Computer, a notebook computer, a Personal Digital Assistant (PDA), a palm computer, a netbook, an Ultra-mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR) device, a Virtual Reality (VR) device, a robot, a wearable device, a flight vehicle, a Vehicle User Equipment (VUE), a shipboard device, a Pedestrian User Equipment (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture), a game console, a Personal Computer (PC), a kiosk, or a self-service machine. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, etc.), a smart wristband, smart clothing, etc. The vehicle-mounted device can also be referred to as a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. The access network device can also be referred to as a Radio Access Network (RAN) device, a radio access network function, a radio access network unit, or a satellite. The access network device can include a base station, a Wireless Local Area Network (WLAN) Access Point (AP), or a Wireless Fidelity (WiFi) node, etc.The base station can be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a relay station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B (HNB), a home evolved Node B, a transmit / receive point (TRP), or some other suitable terminology in the art, and is not limited to a particular technical terminology, provided that the same technical effect is achieved. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0042] The core network device can also be referred to as a core network node, a core network function, or a core network network element, etc., which includes but is not limited to at least one of the following: a mobility management entity (MME), an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), a policy control function (PCF), a policy and charging rules function (PCRF), an edge application server discovery function (EASDF), a unified data management (UDM), a unified data repository (UDR), a home subscriber server (HSS), a centralized network configuration (CNC), a network repository function (NRF), a network exposure function (NEF), a local NEF (L-NEF), a binding support function (BSF), an application function (AF), a location management function (LMF), a gateway mobile location center (GMLC), a network data analytics function (NWDAF), etc. It should be noted that only the core network device in the NR system is taken as an example for introduction in the embodiments of the present application, and the specific type of the core network device is not limited. If the name of the core network device mentioned in the embodiments of the present application changes in the subsequent protocol version (for example, 6G), it is also within the protection scope of the present application.

[0043] Optionally, the core network device can be implemented by one or more function modules in one device, or can be implemented by multiple devices together, and the embodiments of the present application do not make a specific limitation in this regard. It can be understood that the above function modules can be network elements in a hardware device, can be software function modules running on a dedicated hardware, or can be virtualized function modules instantiated on a platform (for example, a cloud platform).

[0044] MPR refers to the allowed power backoff value when the terminal meets the relevant radio frequency index limit, and the power backoff is related to different modulation orders and waveforms.

[0045] In some embodiments, taking power class 3 as an example, the MPR limit table can be as shown in FIG. 2, which takes waveforms including Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) and Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM), and modulation including Quadrature Phase Shift Keying (QPSK) and 16 Quadrature Amplitude Modulation (QAM) as examples. Among them, Inner, Outer, and Edge represent different resource block (RB) placement areas.

[0046] In some embodiments, the channel bandwidth is the maximum bandwidth available for actual transmission, which can be as shown in FIG. 3. The channel bandwidth is divided into the channel bandwidth of the terminal and the channel bandwidth of the network side device, which respectively correspond to the maximum available bandwidth of the terminal or the network side device within a frequency band. The actual allocated channel bandwidth of the terminal should be completely placed within the channel bandwidth of the network side device.

[0047] In some embodiments, the network side device channel bandwidth and the terminal part of the frequency band channel bandwidth can be as shown in Table 1 and Table 2 respectively.

[0048] Table 1: Network side device channel bandwidth and subcarrier spacing (SCS) of each operating frequency band in frequency range (FR) 1

[0049] Table 2: Terminal channel bandwidth

[0050] The power backoff information determination method, device, terminal and network side device provided by the embodiments of the present application are described in detail below in combination with the drawings and some embodiments and application scenarios thereof.

[0051] Referring to FIG. 4, FIG. 4 is a flowchart of a power backoff information determination method according to an embodiment of the present application. As shown in FIG. 4, the method comprises the following steps:

[0052] In step 401, the terminal receives a bandwidth indication, where the bandwidth indication is used to indicate a virtual bandwidth.

[0053] The terminal receiving the bandwidth indication can be that the terminal receives the bandwidth indication sent by the network side device.

[0054] The virtual bandwidth can be understood as a bandwidth different from the channel bandwidth actually allocated to the terminal, for example, a virtual bandwidth used to relax the limit on the existing transmission capability of the terminal or a virtual bandwidth used to reduce power backoff.

[0055] In the embodiments of the present application, the virtual bandwidth can also be referred to as a hypothetical bandwidth, a bandwidth used to determine MPR information or a transmission power participation bandwidth, etc. In the embodiments of the present application, the name of the virtual bandwidth is not limited.

[0056] In step 402, the terminal determines MPR information based on the virtual bandwidth.

[0057] The MPR information can comprise MPR-related radio frequency indicators or a frequency spectrum range to which the MPR-related radio frequency indicators are applicable. The MPR-related radio frequency indicators can comprise at least one of the following:

[0058] An adjacent channel leakage ratio (ACLR);

[0059] A spectrum emission mask (SEM);

[0060] An error vector magnitude (EVM);

[0061] An in-band emission (IBE);

[0062] An occupied bandwidth (OBW);

[0063] Spurious emission.

[0064] Or, the MPR information can include MPR limits, such as 0 dB, 0.5 dB, 1 dB, 2 dB, etc.

[0065] Or, the MPR information can include the effective range of RB.

[0066] In the embodiments of the present application, the determination manner of determining the MPR information based on the virtual bandwidth is not limited, for example, the determination manner of determining the MPR information based on the bandwidth agreed by the protocol can be used, or the determination manner of each of the embodiments provided by the present application can be used, and the present application is not limited.

[0067] In the embodiments of the present application, the terminal receives a bandwidth indication, and the bandwidth indication is used to indicate a virtual bandwidth; and the terminal determines MPR information based on the virtual bandwidth. Since the MPR information is determined based on the virtual bandwidth, the MPR information can be avoided to be evaluated in the worst case, which is beneficial to improve the transmission capability limitation of the terminal, and further improve the transmission performance of the terminal. For example, when the network allows the relaxation of the radio frequency index, the network side device indicates the virtual bandwidth to the terminal, so that the terminal can reduce the MPR to increase the transmission power. For example, the terminal supporting power enhancement can further reduce the MPR, and even in the case of meeting the related radio frequency index, the transmission power is increased.

[0068] As an optional embodiment, the virtual bandwidth is the bandwidth applicable to at least one of the following radio frequency indexes:

[0069] The in-band radiation limit, the adjacent channel leakage ratio, the radio frequency limit requirement of the spectrum radiation template, and the radio frequency limit requirement of the spurious.

[0070] This embodiment can determine the applicable bandwidth of at least one of the in-band radiation limit, the adjacent channel leakage ratio, the radio frequency limit requirement of the spectrum radiation template, and the radio frequency limit requirement of the spurious as the virtual bandwidth, so as to avoid excessive protection of the wireless spectrum environment, relax the limitation of the existing transmission capability of the terminal, fully exert the hardware transmission capability of the terminal, and further improve the transmission performance of the terminal. For example, the terminal relaxes at least one of the in-band radiation limit, the adjacent channel leakage ratio, the radio frequency limit requirement of the spectrum radiation template, and the radio frequency limit requirement of the spurious based on the virtual bandwidth indication, so as to improve the maximum transmission power.

[0071] As an optional embodiment, the terminal determines the MPR information based on the virtual bandwidth, including:

[0072] The terminal determines the maximum channel bandwidth that can be supported by the terminal based on the virtual bandwidth, and determines the MPR information based on the maximum channel bandwidth.

[0073] The determining the maximum channel bandwidth that the terminal can support based on the virtual bandwidth can be determining the maximum channel bandwidth that the terminal corresponding to the virtual bandwidth can support, for example, for a terminal with 15 kHz SCS, the supported channel bandwidth list is {5, 10, 15, 20, 25, 30, 40, 45, 50}, and the virtual bandwidth is 36 MHz, then the maximum channel bandwidth that the terminal can support is determined as 30 MHz. For another example, for a terminal with 15 kHz SCS, the supported channel bandwidth list is {5, 10, 15, 20, 25, 30, 40, 45, 50}, and the virtual bandwidth is 21 MHz, then the maximum channel bandwidth that the terminal can support is determined as 20 MHz.

[0074] The determining the MPR information based on the maximum channel bandwidth can be determining the MPR information in a manner agreed by a protocol based on the maximum channel bandwidth.

[0075] In this embodiment, the MPR information is determined based on the maximum channel bandwidth, so that the MPR information is more reliable.

[0076] It should be noted that in the embodiments of the present application, the terminal does not determine the maximum channel bandwidth that the terminal can support based on the virtual bandwidth, and determine the MPR information based on the maximum channel bandwidth. For example, in some embodiments, the MPR information can be directly determined according to the mapping relationship between the virtual bandwidth and the MPR information.

[0077] Optionally, the determining the MPR information based on the maximum channel bandwidth comprises:

[0078] In a case where the maximum channel bandwidth is greater than N times of the actual channel bandwidth used by the terminal, the MPR information is determined based on a channel bandwidth of N times of the actual channel bandwidth used by the terminal, N is a real number greater than 0, or N is related to the actual channel bandwidth or actual resource block (RB) configuration information.

[0079] The N can be agreed by a protocol or configured by a network side device, for example, N is equal to 2, 2.5, 1.5 or 0.5, etc.

[0080] In some embodiments, N is a real number greater than 1.

[0081] In a case where N is a real number greater than 0 and less than 1, it can be understood that the indicated virtual bandwidth is added at both ends or one end of the actual channel bandwidth.

[0082] The N can be understood as being determined by the actually used channel bandwidth or the actually used resource block (RB) configuration information, for example, the actually used channel bandwidth and the value of N have a mapping relationship, and the actually used resource block (RB) configuration information and the value of N have a mapping relationship, which can be protocol agreement or network device configuration.

[0083] For example, in a case where the maximum channel bandwidth is greater than 2 times the actually used channel bandwidth of the terminal, the MPR information is determined based on a channel bandwidth of 2 times the actually used channel bandwidth of the terminal.

[0084] In this embodiment, in a case where the maximum channel bandwidth is greater than N times the actually used channel bandwidth of the terminal, the MPR information is determined based on a channel bandwidth of N times the actually used channel bandwidth of the terminal, so as to avoid that the terminal uses a too large channel bandwidth to determine the MPR information, and to improve the reliability of the MPR information.

[0085] Optionally, in a case where the maximum channel bandwidth is greater than or equal to N times the actually used channel bandwidth of the terminal, the MPR information is determined based on the maximum channel bandwidth.

[0086] For example, the terminal supports a channel bandwidth list of {5, 10, 15, 20, 25, 30, 40, 45, 50} on 15 kHz SCS, the actually used channel bandwidth of the terminal is 15 MHz, and the virtual bandwidth issued by the network device is 21 MHz. The terminal selects the maximum channel bandwidth of 20 MHz supported according to 21 MHz, and the corresponding MPR information is calculated according to 20 MHz. If the virtual bandwidth issued by the network device is 52 MHz, the terminal can select the maximum channel bandwidth of 50 MHz supported according to 52 MHz. Since the actually used channel bandwidth is 15 MHz, the corresponding 2 times bandwidth is only 30 MHz, and finally the virtual bandwidth is updated to 30 MHz, and the corresponding MPR information is calculated according to 30 MHz.

[0087] As an optional embodiment, the MPR information includes at least one of the following:

[0088] An effective range of an inner (Inner) RB, an effective range of an outer (Outer) RB, and an effective range of an edge (Edge) RB.

[0089] The effective range of the inner RB, the effective range of the outer RB, and the effective range of the edge RB are used to determine the MPR in each range. For example, as shown in FIG. 2, the MPR in different effective ranges is different, or the MPR in some effective ranges is the same. It should be noted that the MPR limit table shown in FIG. 2 is only an example, and in the embodiments of the present application, the MPR limit table defined in the protocol can be used, or a new MPR limit table introduced in a subsequent protocol or corresponding MPR under different RB allocation modes can be used, and the present application is not limited in this regard.

[0090] In some embodiments, the terminal can be preconfigured with an MPR limit table corresponding to the virtual bandwidth, or the protocol can be agreed to have an MPR limit table corresponding to the virtual bandwidth.

[0091] In this embodiment, the effective range of the inner RB, the effective range of the outer RB, and the effective range of the edge RB can be determined based on the virtual bandwidth, so that the MPR limit of each RB is determined based on the virtual bandwidth, which is beneficial to relaxing the MPR limit to improve the transmission performance of the terminal.

[0092] In some embodiments, the effective range of the inner RB, the effective range of the outer RB, and the effective range of the edge RB can be determined based on the following method: RB start,low = max (1, floor (L CRB / 2)) RB start,high = N RB – RB Start,Low – L CRB

[0093] wherein L CRB represents the number of continuous RB allocation in units of RB;

[0094] N RB represents the maximum number of RBs under a given channel bandwidth and subcarrier spacing;

[0095] max() represents the maximum value of all parameters, and floor(x) is the maximum integer less than or equal to x.

[0096] If the RB allocation satisfies the following conditions, the allocation belongs to the inner RB (Inner) allocation region: RB start,low ≤ RB start ≤ RB start,high , and L CRB ≤ ceil (N RB / 2)

[0097] wherein RB start is the starting position or the lowest RB index of the RB allocation, and ceil(x) is the minimum integer greater than or equal to x.

[0098] If the RB allocation satisfies the following condition, the allocation belongs to the Edge allocation region:

[0099] LCRB≤2, while the RB location is at the top or bottom of the channel.

[0100] Other types of RB allocation belong to the Outer allocation region.

[0101] Optionally, the maximum number of RBs corresponding to at least one of the effective range of the inner RB, the effective range of the outer RB, and the effective range of the edge RB includes:

[0102] the maximum number of RBs corresponding to the virtual bandwidth; or

[0103] the maximum number of RBs corresponding to the maximum channel bandwidth; or

[0104] in the case where the maximum channel bandwidth is greater than N times the actual channel bandwidth used by the terminal, the maximum number of RBs corresponding to the channel bandwidth of N times the actual channel bandwidth used by the terminal;

[0105] wherein the maximum channel bandwidth is determined based on the virtual bandwidth to determine the maximum channel bandwidth that can be supported by the terminal.

[0106] The maximum number of RBs is NRB in the above-mentioned manner. For example, taking 15 kHz SCS as an example, the maximum channel bandwidth is 30 MHz, and the maximum number of RBs is 160. Taking 15 kHz SCS as an example, the maximum channel bandwidth is 20 MHz, and the maximum number of RBs is 106.

[0107] In this embodiment, the maximum number of RBs can be determined based on the virtual bandwidth, and then the effective range of the inner RB, the effective range of the outer RB, and the effective range of the edge RB can be determined.

[0108] Optionally, the starting position or the lowest RB index of the RB allocation corresponding to the effective range of the inner RB includes:

[0109] the starting position or the lowest RB index of the RB used by the terminal plus the offset corresponding to the maximum channel bandwidth.

[0110] The starting position or the lowest RB index of the RB allocation can be the RB start or expressed as NewRB start .

[0111] In some embodiments, the offset corresponding to the maximum channel bandwidth includes:

[0112] a down-integer of M times of a RB number of a first channel bandwidth, the RB number of the first channel bandwidth being equal to a maximum RB number corresponding to a second channel bandwidth minus a maximum RB number corresponding to an actually used channel bandwidth of the terminal, M being a real number greater than 0, wherein:

[0113] The second channel bandwidth is the virtual bandwidth; or

[0114] The second channel bandwidth is less than or equal to the maximum channel bandwidth; or

[0115] In a case where the maximum channel bandwidth is greater than N times of the actually used channel bandwidth of the terminal, the second channel bandwidth is equal to N times of the actually used channel bandwidth of the terminal.

[0116] The above M is a real number, such as 0.5 or 0.6, which is agreed by a protocol or configured by a network side device.

[0117] For example: NewRB start = RB start + floor(0.5*(a maximum RB number corresponding to a maximum channel bandwidth supported by the terminal and indicated by virtual bandwidth signaling minus a maximum RB number corresponding to the actually used channel bandwidth of the terminal)), wherein RB start is a start position or a lowest RB index of the actually used RB.

[0118] For another example: NewRB start = RB start + floor(0.5*(min(a maximum RB number corresponding to a maximum channel bandwidth supported by the terminal, a maximum RB number corresponding to the actually used channel corresponding to the terminal*2)-a maximum RB number corresponding to the actually used channel bandwidth CBW) of the terminal)), wherein RB start is a start position or a lowest RB index of the actually used RB.

[0119] Since the start position or the lowest RB index of the RB allocation corresponding to the effective range of the internal RB includes the start position or the lowest RB index of the actually used RB of the terminal plus the offset corresponding to the maximum channel bandwidth, the effective range of the internal RB can be relaxed to relax the MPR, thereby improving the transmission performance of the terminal.

[0120] The above effective range of the internal RB, the effective range of the external RB and the effective range of the edge RB are illustrated by multiple embodiments as follows:

[0121] In one embodiment:

[0122] In the embodiment, the base station newly adds bandwidth indication (such as terminal virtual bandwidth signaling indication) to indicate the applicable spectrum range of the in-band radiation limit value, adjacent channel leakage ratio, spectrum emission mask and spurious radio frequency limit value requirement of the terminal, i.e. the above-mentioned virtual bandwidth. The terminal relaxes the corresponding radiation limit value requirement based on the terminal virtual bandwidth indication, improves the maximum transmission power, corresponds to the MPR limit value table corresponding to the terminal virtual bandwidth, and calculates the resource allocation mode of the effective range of the internal RB, the effective range of the external RB and the effective range of the edge RB based on the terminal virtual bandwidth. The typical value of the terminal virtual bandwidth can be the channel bandwidth actually used by the terminal plus 1 MHz or 2 MHz, the maximum channel bandwidth supported by the terminal can be 2 times the channel bandwidth actually used by the terminal, 2 times the maximum channel bandwidth supported by the terminal, the maximum channel bandwidth supported by the base station or the maximum channel bandwidth supported in the frequency band range supported by the operator, etc.

[0123] In one embodiment,

[0124] In the embodiment, the base station newly adds bandwidth indication (such as terminal virtual bandwidth signaling indication) to indicate the applicable spectrum range of the in-band radiation limit value, adjacent channel leakage ratio, spectrum emission mask and spurious radio frequency limit value requirement of the terminal, i.e. the above-mentioned virtual bandwidth. The terminal can support different channel bandwidth lists for different frequency bands. The terminal selects the maximum channel bandwidth that can be supported within the newly indicated virtual bandwidth of the base station, and the terminal calculates the MPR limit value requirement according to the channel bandwidth. The MPR limit value requirement is based on the internal RB, the external RB and the edge RB representing different RB placement areas, and the resource allocation mode of the effective range of the internal RB, the effective range of the external RB and the effective range of the edge RB. RB For the terminal supporting the maximum channel bandwidth less than or equal to the virtual bandwidth signaling indication, i.e. the maximum RB number corresponding to the maximum channel bandwidth (CBW) supported by the terminal less than or equal to the virtual bandwidth signaling indication - the maximum RB number corresponding to the actual channel bandwidth CBW of the terminal. RB Based on the updated new bandwidth determination. RB start The starting position or the lowest RB index of the RB allocation using the channel bandwidth plus 1 / 2 (the maximum RB number corresponding to the maximum channel bandwidth (CBW) supported by the terminal less than or equal to the virtual bandwidth signaling indication - the maximum RB number corresponding to the actual channel bandwidth CBW of the terminal).

[0125] For example: NewRB start = RB start + floor (0.5 * (the maximum RB number corresponding to the maximum channel bandwidth (CBW) supported by the terminal less than or equal to the virtual bandwidth signaling indication - the maximum RB number corresponding to the actual channel bandwidth CBW of the terminal)).

[0126] L CRB(Indicates the number of continuous RB allocation in RB unit) Actual resource block is used as reference, MPR calculation is not updated with virtual bandwidth.

[0127] For example: terminal supports channel bandwidth list on n1(15kHz SCS) is {5, 10, 15, 20, 25, 30, 40, 45, 50}, actual channel bandwidth used by terminal is 15MHz, virtual bandwidth issued by base station is 36MHz. Terminal selects the maximum supported channel bandwidth 30MHz according to 36MHz, and the corresponding MPR limit value is calculated according to 30MHz. RB 160(30MHz). The starting position of the corresponding RB allocation is updated to: start +floor(0.5*(160-79)=RB start +40.

[0128] In one embodiment,

[0129] In this embodiment, a new bandwidth indication (such as terminal virtual bandwidth signaling indication) is added at the base station, which is used to indicate the applicable spectral range of the in-band radiation limit value, adjacent channel leakage ratio, spectral radiation template and spurious radio frequency limit value requirements of the terminal, i.e. the above-mentioned virtual bandwidth. The terminal can support different channel bandwidth lists for different frequency bands. The terminal selects the maximum supported channel bandwidth within the new virtual bandwidth indicated by the base station, and when the selected maximum channel bandwidth is greater than twice the actual channel bandwidth used by the terminal, the terminal calculates the MPR limit value requirement according to twice the actual channel bandwidth used as the virtual bandwidth. The MPR limit value requirement is based on the different RB placement areas represented by the internal RB, external RB and edge RB, and the resource allocation mode of the effective range of the internal RB, the effective range of the external RB and the effective range of the edge RB is updated based on the virtual bandwidth. That is, the resource allocation mode of N RB is determined based on the updated new virtual bandwidth. RB start is the starting position of the RB allocation of the used channel bandwidth or the minimum RB index plus 1 / 2(min(maximum RB number corresponding to the maximum channel bandwidth (CBW) supported by the terminal indicated by the virtual bandwidth signaling, maximum RB number corresponding to twice the actual channel bandwidth used by the terminal)-maximum RB number corresponding to the actual channel bandwidth (CBW) used by the terminal).

[0130] For example: NewRB start =RB start +floor(0.5*(min(maximum RB number corresponding to the maximum channel bandwidth (CBW) supported by the terminal indicated by the virtual bandwidth signaling, maximum RB number corresponding to twice the actual channel bandwidth used by the terminal)-maximum RB number corresponding to the actual channel bandwidth (CBW) used by the terminal).

[0131] L CRB (Indicates the number of continuous RB allocation in RB unit) Actual resource block is used as reference, MPR calculation is not updated with virtual bandwidth.

[0132] For example: terminal supports channel bandwidth list on n1(15kHz SCS) as: {5, 10, 15, 20, 25, 30, 40, 45, 50}, actual channel bandwidth used by terminal is 15MHz, virtual bandwidth issued by base station is 21MHz. Terminal selects the maximum channel bandwidth 20MHz according to 21MHz, and the corresponding MPR limit value is calculated according to 20MHz. RB Updated to 106(20MHz). The starting position of corresponding RB allocation is updated to: RB start +floor(0.5*(106-79)=RB start +13. Virtual bandwidth issued by base station is 52MHz, terminal selects the maximum channel bandwidth 50MHz according to 52MHz. Since the actual channel bandwidth used by channel is 15MHz, the corresponding 2 times bandwidth is only 30MHz, and the final virtual bandwidth is updated to 30MHz. RB Updated to 160(30MHz). The starting position of corresponding RB allocation is updated to: RB start +floor(0.5*(160-79)=RB start +40.

[0133] As an optional embodiment, the virtual bandwidth comprises:

[0134] The channel bandwidth in the channel bandwidth list supported by the terminal; or

[0135] The bandwidth in the virtual bandwidth list supported by the terminal.

[0136] The channel bandwidth in the channel bandwidth list supported by the terminal and the virtual bandwidth list supported by the terminal can be reported to the network side device in advance.

[0137] In this embodiment, since the virtual bandwidth is the channel bandwidth in the channel bandwidth list or the virtual bandwidth list supported by the terminal, the indicated virtual bandwidth is more matched with the terminal, and the determined MPR information is more suitable for the terminal.

[0138] In one embodiment:

[0139] In this embodiment, a new bandwidth indication (such as terminal virtual bandwidth signaling indication) is added in the base station, which is used to indicate the applicable spectrum range of the in-band radiation limit value, adjacent channel leakage ratio, spectrum radiation template and spurious radio frequency limit value requirements of the terminal, i.e. the above-mentioned virtual bandwidth. The terminal can support different channel bandwidth lists for different frequency bands. The base station selects a channel bandwidth that can be relaxed in the terminal support channel bandwidth list as the virtual bandwidth signaling and issues it, and the terminal calculates the MPR limit value requirement according to the virtual channel bandwidth. The MPR limit value requirement is based on internal RB, external RB and edge RB representing different RB placement areas, and the effective range of the internal RB, the effective range of the external RB and the effective range of the edge RB in the resource allocation mode RB Based on the maximum channel bandwidth supported by the terminal less than or equal to the virtual bandwidth signaling indication, i.e. N RB Based on the updated new bandwidth determination. RB start The starting position or the lowest RB index of the RB allocation using the channel bandwidth is updated by 1 / 2 (the maximum number of RBs corresponding to the maximum channel bandwidth (CBW) supported by the terminal less than or equal to the virtual bandwidth signaling indication - the maximum number of RBs corresponding to the actual channel bandwidth CBW used by the terminal).

[0140] For example: NewRB start = RB start + floor (0.5 * (the maximum number of RBs corresponding to the virtual bandwidth signaling indication (CBW) - the maximum number of RBs corresponding to the actual channel bandwidth (CBW) used by the terminal).

[0141] L CRB (indicating the number of continuous RB allocation in RB units) is based on the actually used resource block and does not update with the virtual bandwidth in the calculation of MPR.

[0142] For example: the terminal supports the channel bandwidth list as {5, 10, 15, 20, 25, 30, 40, 45, 50} on n1 (15kHz SCS), the terminal actually uses the channel bandwidth of 15MHz, the base station selects the virtual bandwidth of 30MHz from the channel bandwidth list supported by the terminal and issues it to the terminal, and the terminal calculates the MPR limit value based on the virtual bandwidth. NRB is updated from 79 (corresponding to 15MHz) to 160 (30MHz). The starting position of the corresponding RB allocation is updated to: RB start + floor (0.5 * (160 - 79) = RB start + 40.

[0143] Optionally, the bandwidth in the virtual bandwidth list supported by the terminal includes:

[0144] The bandwidth indication indicates the virtual bandwidth in the virtual bandwidth list supported by the terminal; or

[0145] The terminal selects a virtual bandwidth in a virtual bandwidth list supported by the terminal based on the bandwidth indication.

[0146] The bandwidth indication indicates a virtual bandwidth in the virtual bandwidth list supported by the terminal, which can be understood as a virtual bandwidth selected by the network side device in the virtual bandwidth list supported by the terminal.

[0147] In this embodiment, the virtual bandwidth selected by the network side device or the terminal in the virtual bandwidth list supported by the terminal can be implemented, so that the finally determined MPR information is more matched with the terminal.

[0148] Optionally, the method further comprises at least one of the following:

[0149] The terminal reports a channel bandwidth list supported by the terminal;

[0150] The terminal reports a virtual bandwidth list supported by the terminal.

[0151] The terminal reports the channel bandwidth list supported by the terminal and the terminal reports the virtual bandwidth list supported by the terminal can be reported before step 401.

[0152] In this embodiment, at least one of the terminal support channel bandwidth list and the terminal support virtual bandwidth list is reported, so that the network side device can indicate a virtual bandwidth more matched with the terminal, so that the MPR information is more matched with the terminal.

[0153] In one embodiment:

[0154] In addition to supporting different channel bandwidth lists for different frequency bands, the terminal additionally supports virtual bandwidths for improving the maximum transmit power. For example, the terminal supports a channel bandwidth list of {5, 10, 15, 20, 25, 30, 40, 45, 50} on n1 (15 kHz SCS), and additionally supports a maximum transmit power improvement (MPR limit table) under a virtual bandwidth list, such as {35, 80}. When the base station issues a virtual bandwidth, the terminal considers the support channel bandwidth list and the virtual bandwidth list, and selects an indication less than or equal to the virtual bandwidth issued by the base station to calculate the MPR limit requirement.

[0155] In one embodiment:

[0156] In addition to supporting different channel bandwidth lists for different frequency bands, a terminal additionally supports a virtual bandwidth list for power enhancement. For example, a terminal supports a channel bandwidth list of {5, 10, 15, 20, 25, 30, 40, 45, 50} for n1 (15 kHz SCS), and additionally supports a maximum transmit power improvement (MPR limit table) for a virtual bandwidth list, such as {35, 80}. The terminal reports the supported virtual bandwidth list, and when the base station issues a virtual bandwidth, the terminal selects a channel bandwidth that can be relaxed from the channel bandwidth list and the virtual bandwidth list, and is issued to the terminal as a virtual channel bandwidth.

[0157] As an optional implementation, the method further includes:

[0158] The terminal determines whether to enable a power boosting function based on the virtual bandwidth. When the maximum channel bandwidth supported by the terminal corresponding to the virtual bandwidth is greater than N times the actual channel bandwidth used by the terminal, the terminal is allowed to have an actual transmit power higher than a current power level of the terminal, where N is a real number greater than 0, or N is related to the actual channel bandwidth used or actual RB configuration information.

[0159] The terminal determines whether to enable the power boosting function based on the virtual bandwidth can be to determine to enable the power boosting function when the maximum channel bandwidth supported by the terminal corresponding to the virtual bandwidth is greater than N times the actual channel bandwidth used by the terminal, or to determine to enable the power boosting function when the virtual bandwidth is greater than or equal to a preset value, such as greater than or equal to 1 MHz or 2 MHz, than the actual channel bandwidth used by the terminal.

[0160] The terminal is allowed to have an actual transmit power higher than a current power level of the terminal can be when it is determined to enable the power boosting function.

[0161] In some implementations, the terminal can also be allowed to have a power higher than a current power level when it is determined not to enable the power boosting function, which is not limited.

[0162] In the embodiment, the terminal can be allowed to have a higher actual transmitting power than the current power level of the terminal when the maximum channel bandwidth supported by the terminal corresponding to the virtual bandwidth is greater than the actual channel bandwidth used by the terminal by N times, thereby improving the transmitting performance of the terminal. For example, when the terminal supports power boosting, the terminal calculates whether to enable the power boosting function based on the virtual bandwidth of the terminal indicated by the base station. In particular, when the virtual bandwidth is greater than the actual channel bandwidth used by the terminal by more than twice, the actual transmitting power of the terminal can be higher than the current power level of the terminal.

[0163] It should be noted that the embodiment can also not determine whether to enable the power boosting function based on the virtual bandwidth, for example, the power boosting function is enabled by default or the power boosting function is disabled by default.

[0164] In the embodiment, the terminal receives a bandwidth indication, and the bandwidth indication is used to indicate a virtual bandwidth. The terminal determines MPR information based on the virtual bandwidth. Since the MPR information is determined based on the virtual bandwidth, the MPR information can be evaluated in the worst case, which is beneficial to improve the transmitting capability limitation of the terminal and further improve the transmitting performance of the terminal.

[0165] Please refer to FIG. 5, which is a flowchart of a bandwidth indication method according to an embodiment of the present application. As shown in FIG. 5, the method comprises the following steps:

[0166] In step 501, a network-side device sends a bandwidth indication to a terminal, and the bandwidth indication is used to indicate a virtual bandwidth.

[0167] Optionally, the virtual bandwidth is a bandwidth suitable for at least one of the following radio frequency indicators:

[0168] In-band emission limit, adjacent channel leakage ratio, radio frequency limit requirement of a spectral emission mask, and radio frequency limit requirement of spurious.

[0169] Optionally, the virtual bandwidth comprises:

[0170] A channel bandwidth in a channel bandwidth list supported by the terminal; or

[0171] A bandwidth in a virtual bandwidth list supported by the terminal.

[0172] Optionally, the method further comprises at least one of the following:

[0173] The network-side device receives a channel bandwidth list supported by the terminal reported by the terminal;

[0174] The network-side device receives a virtual bandwidth list supported by the terminal reported by the terminal.

[0175] Optionally, the virtual bandwidth is used to determine the MPR information, and details are shown in the embodiment of FIG. 4, which is not repeated here.

[0176] It should be noted that the embodiment is the implementation of the corresponding network side device in the embodiment shown in FIG. 4, and the specific implementation can refer to the related description of the embodiment shown in FIG. 4. To avoid repeated description, the embodiment is not repeated here.

[0177] The power backoff information determination method provided in the embodiment of the application can be executed by the power backoff information determination apparatus. In the embodiment of the application, the power backoff information determination apparatus executes the power backoff information determination method as an example to illustrate the power backoff information determination apparatus provided in the embodiment of the application.

[0178] The bandwidth indication method provided in the embodiment of the application can be executed by the bandwidth indication apparatus. In the embodiment of the application, the bandwidth indication apparatus executes the bandwidth indication method as an example to illustrate the bandwidth indication apparatus provided in the embodiment of the application.

[0179] The power backoff information determination apparatus provided in the embodiment of the application can be a communication device or a component in the communication device, such as a chip, as an example. The communication device can be a terminal, a network side device, or a server, etc. Exemplarily, the terminal can include but is not limited to the types of the terminal 11 listed above, and the network side device can include but is not limited to the types of the network side device 12 listed above, which is not limited in the embodiment of the application.

[0180] The bandwidth indication apparatus provided in the embodiment of the application can be a communication device or a component in the communication device, such as a chip, as an example. The communication device can be a terminal, a network side device, or a server, etc. Exemplarily, the terminal can include but is not limited to the types of the terminal 11 listed above, and the network side device can include but is not limited to the types of the network side device 12 listed above, which is not limited in the embodiment of the application.

[0181] The power backoff information determining apparatus or the bandwidth indicating apparatus can include a receiving module, a sending module and a processing module. The receiving module, the sending module and the processing module can be implemented by software or by hardware. When implemented by hardware, the processing module can be implemented by a processor, which can include a general purpose processor, a special purpose processor, etc., such as a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), an artificial intelligent (AI) processor, a graphics processing unit (GPU), an application specific integrated circuit (ASIC), a network processor (NP), a field programmable gate array (FPGA) or other programmable logic device, a gate circuit, a transistor, a discrete hardware component, etc. The receiving module and the sending module can be implemented by a communication interface, which can include one or more of a transceiver, a pin, a circuit, a bus, a radio frequency unit, etc.

[0182] Specifically, referring to FIG. 6, when the power backoff information determining apparatus is a terminal or a component in a terminal, the power backoff information determining apparatus 600 includes:

[0183] The receiving module 601 is configured to receive a bandwidth indication, where the bandwidth indication is used to indicate a virtual bandwidth.

[0184] The processing module 602 is configured to determine maximum power reduction (MPR) information based on the virtual bandwidth.

[0185] Optionally, the virtual bandwidth is a bandwidth applicable to at least one of the following radio frequency indicators:

[0186] An in-band emission limit, a spurious emission radio frequency limit requirement, a spectral emission mask radio frequency limit requirement, and a neighbor leakage ratio.

[0187] Optionally, the processing module 602 is configured to determine a maximum channel bandwidth that can be supported by the terminal based on the virtual bandwidth, and determine MPR information based on the maximum channel bandwidth.

[0188] Optionally, the determination of the MPR information based on the maximum channel bandwidth includes:

[0189] In a case where the maximum channel bandwidth is greater than N times of the actual channel bandwidth used by the terminal, the MPR information is determined based on a channel bandwidth of N times of the actual channel bandwidth used by the terminal, N being a real number greater than 0, or N being related to the actual channel bandwidth used or actual resource block (RB) configuration information.

[0190] Optionally, the MPR information comprises at least one of:

[0191] a valid range of inner RBs, a valid range of outer RBs, and a valid range of edge RBs.

[0192] Optionally, a maximum number of RBs corresponding to at least one of the valid range of inner RBs, the valid range of outer RBs, and the valid range of edge RBs comprises:

[0193] a maximum number of RBs corresponding to the virtual bandwidth; or

[0194] a maximum number of RBs corresponding to the maximum channel bandwidth; or

[0195] a maximum number of RBs corresponding to a channel bandwidth of N times of the actual channel bandwidth used by the terminal in a case where the maximum channel bandwidth is greater than N times of the actual channel bandwidth used by the terminal.

[0196] The maximum channel bandwidth is determined based on the virtual bandwidth to be a maximum channel bandwidth that can be supported by the terminal.

[0197] Optionally, a starting position or a lowest RB index of RB allocation corresponding to the valid range of inner RBs comprises:

[0198] a starting position or a lowest RB index of the RB used by the terminal plus an offset corresponding to the maximum channel bandwidth.

[0199] Optionally, the offset corresponding to the maximum channel bandwidth comprises:

[0200] a down-round value of M times of a number of RBs of a first channel bandwidth, the number of RBs of the first channel bandwidth being equal to a maximum number of RBs corresponding to a second channel bandwidth minus a maximum number of RBs corresponding to the actual channel bandwidth used by the terminal, M being a real number greater than 0, wherein:

[0201] The second channel bandwidth is the virtual bandwidth; or

[0202] The second channel bandwidth is less than or equal to the maximum channel bandwidth; or

[0203] In a case where the maximum channel bandwidth is greater than N times of the actual channel bandwidth used by the terminal, the second channel bandwidth is equal to N times of the actual channel bandwidth used by the terminal.

[0204] Optionally, the virtual bandwidth comprises:

[0205] a channel bandwidth within a channel bandwidth list supported by the terminal; or

[0206] a bandwidth within a virtual bandwidth list supported by the terminal.

[0207] Optionally, the bandwidth within the virtual bandwidth list supported by the terminal comprises:

[0208] the bandwidth indication indicates a virtual bandwidth indicated within the virtual bandwidth list supported by the terminal; or

[0209] the terminal selects a virtual bandwidth within the virtual bandwidth list supported by the terminal based on the bandwidth indication.

[0210] Optionally, the apparatus further comprises a sending module, configured to perform at least one of the following:

[0211] reporting a channel bandwidth list supported by the terminal;

[0212] reporting a virtual bandwidth list supported by the terminal.

[0213] Optionally, the processing module 602 is further configured to determine whether to enable a power boosting function based on the virtual bandwidth, wherein in a case where the maximum channel bandwidth that can be supported by the terminal corresponding to the virtual bandwidth is greater than N times of the actual channel bandwidth used by the terminal, the actual transmission power of the terminal is allowed to be higher than the current power level of the terminal.

[0214] The power backoff information determination apparatus can improve the transmission performance of the terminal.

[0215] The power backoff information determination apparatus provided by the embodiments of the present application can implement each process implemented by the method embodiment of FIG. 4 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0216] Referring to FIG. 7, when the bandwidth indication apparatus is a network side device or a component in the network side device, the bandwidth indication apparatus 700 comprises:

[0217] a sending module 701, configured to send a bandwidth indication to a terminal, wherein the bandwidth indication is used to indicate a virtual bandwidth.

[0218] Optionally, the virtual bandwidth is a bandwidth applicable to at least one of the following radio frequency indicators:

[0219] an in-band radiation limit, a spurious radio frequency limit requirement, a spectral emission mask radio frequency limit requirement, and a neighbor leakage ratio.

[0220] Optionally, the virtual bandwidth comprises:

[0221] a channel bandwidth within the list of channel bandwidths supported by the terminal; or

[0222] a bandwidth within the list of virtual bandwidths supported by the terminal.

[0223] Optionally, the apparatus further comprises a receiving module configured to receive at least one of the following: the list of channel bandwidths supported by the terminal reported by the terminal; the list of virtual bandwidths supported by the terminal reported by the terminal.

[0224] The bandwidth indication apparatus can improve the transmission performance of the terminal.

[0225] The power backoff information determination apparatus provided by the embodiments of the present application can implement each process implemented by the method embodiment of Figure 5 and achieve the same technical effects. To avoid repetition, details are not described herein.

[0226] As shown in Figure 8, the embodiments of the present application further provide a communication device 800, which comprises a processor 801 and a memory 802, and the memory 802 stores programs or instructions executable on the processor 801. For example, when the communication device 800 is a terminal, the programs or instructions are executed by the processor 801 to implement each step of the power backoff information determination method embodiment and achieve the same technical effects. When the communication device 800 is a network side device, the programs or instructions are executed by the processor 801 to implement each step of the power backoff information determination method embodiment and achieve the same technical effects. To avoid repetition, details are not described herein.

[0227] The embodiments of the present application further provide a terminal, which comprises a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to run programs or instructions to implement the steps in the method embodiment shown in Figure 4. The terminal embodiment corresponds to the terminal side method embodiment described above, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment and achieve the same technical effects. The terminal can be the power backoff information determination apparatus shown in Figure 6. Specifically, Figure 9 is a hardware structure diagram of a terminal implementing the embodiments of the present application.

[0228] The terminal 900 includes, but is not limited to, at least part of the following components: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, and a processor 910, etc.

[0229] Those skilled in the art can understand that the terminal 900 can also include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 910 through a power management system, so that the power management system can realize the functions of managing charging, discharging and power consumption management. The terminal structure shown in FIG. 9 does not constitute a limitation on the terminal, and the terminal can include more or fewer components than those shown, or combine certain components, or different component arrangements, which are not described here.

[0230] It should be understood that in the embodiments of the present application, the input unit 904 can include a graphics processor 9041 and a microphone 9042, and the graphics processor 9041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 906 can include a display panel 9061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 can include two parts of a touch detection device and a touch controller. The other input devices 9072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, which are not described here.

[0231] In the embodiments of the present application, after the radio frequency unit 901 receives the downlink data from the network side device, it can be transmitted to the processor 910 for processing. In addition, the radio frequency unit 901 can send uplink data to the network side device. Generally, the radio frequency unit 901 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0232] The memory 909 can be used to store software programs or instructions and various data. The memory 909 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 909 can include a volatile memory or a non-volatile memory. The non-volatile memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a Random Access Memory (RAM), a Static RAM (SRAM), a Dynamic RAM (DRAM), a Synchronous DRAM (SDRAM), a Double Data Rate SDRAM (DDR SDRAM), an Enhanced SDRAM (ESDRAM), a Synch link DRAM (SLDRAM), and a Direct Rambus RAM (DRRAM). The memory 909 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0233] The processor 910 can include one or more processing units; optionally, the processor 910 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 910.

[0234] The radio frequency unit 901 is configured to receive a bandwidth indication, wherein the bandwidth indication is used to indicate a virtual bandwidth.

[0235] The processor 910 is configured to determine maximum power reduction (MPR) information based on the virtual bandwidth.

[0236] Optionally, the virtual bandwidth is a bandwidth suitable for at least one of the following radio frequency indicators:

[0237] In-band emission limit, adjacent channel leakage ratio, RF limit requirement of spectrum emission mask, RF limit requirement of spurious.

[0238] Optionally, the MPR information is determined based on the virtual bandwidth, comprising:

[0239] The maximum channel bandwidth that the terminal can support is determined based on the virtual bandwidth, and the MPR information is determined based on the maximum channel bandwidth.

[0240] Optionally, the MPR information is determined based on the maximum channel bandwidth, comprising:

[0241] In a case where the maximum channel bandwidth is greater than N times of the actual channel bandwidth used by the terminal, the MPR information is determined based on a channel bandwidth of N times of the actual channel bandwidth used by the terminal, N being a real number greater than 0, or N being related to the actual channel bandwidth used or actual resource block (RB) configuration information.

[0242] Optionally, the MPR information comprises at least one of: an effective range of inner RBs, an effective range of outer RBs, and an effective range of edge RBs.

[0243] Optionally, the maximum number of RBs corresponding to at least one of the effective range of inner RBs, the effective range of outer RBs, and the effective range of edge RBs comprises:

[0244] a maximum number of RBs corresponding to the virtual bandwidth; or

[0245] a maximum number of RBs corresponding to the maximum channel bandwidth; or

[0246] in a case where the maximum channel bandwidth is greater than N times of the actual channel bandwidth used by the terminal, a maximum number of RBs corresponding to a channel bandwidth of N times of the actual channel bandwidth used by the terminal;

[0247] The maximum channel bandwidth is determined based on the virtual bandwidth to be the maximum channel bandwidth that the terminal can support.

[0248] Optionally, the starting position or the lowest RB index of RB allocation corresponding to the effective range of inner RBs comprises:

[0249] a starting position or a lowest RB index of the RBs actually used by the terminal plus an offset corresponding to the maximum channel bandwidth.

[0250] Optionally, the offset corresponding to the maximum channel bandwidth comprises:

[0251] a down-round value of M times of a RB number of a first channel bandwidth, the RB number of the first channel bandwidth being equal to a maximum RB number corresponding to a second channel bandwidth minus a maximum RB number corresponding to an actually used channel bandwidth of the terminal, M being a real number greater than 0, wherein:

[0252] The second channel bandwidth is the virtual bandwidth; or

[0253] The second channel bandwidth is less than or equal to the maximum channel bandwidth; or

[0254] In a case where the maximum channel bandwidth is greater than N times of the actually used channel bandwidth of the terminal, the second channel bandwidth is equal to N times of the actually used channel bandwidth of the terminal.

[0255] Optionally, the virtual bandwidth comprises: a channel bandwidth within a channel bandwidth list supported by the terminal; or a bandwidth within a virtual bandwidth list supported by the terminal.

[0256] Optionally, the bandwidth within the virtual bandwidth list supported by the terminal comprises: a virtual bandwidth indicated within the virtual bandwidth list supported by the terminal based on the bandwidth indication; or a virtual bandwidth selected within the virtual bandwidth list supported by the terminal based on the bandwidth indication.

[0257] Optionally, the radio frequency unit 901 is further configured to perform at least one of the following: reporting, by the terminal, the channel bandwidth list supported by the terminal; and reporting, by the terminal, the virtual bandwidth list supported by the terminal.

[0258] Optionally, the processor 910 is further configured to

[0259] determining whether to enable a power boosting function based on the virtual bandwidth, wherein in a case where the maximum channel bandwidth supported by the terminal corresponding to the virtual bandwidth is greater than N times of the actually used channel bandwidth of the terminal, allowing the actual transmission power of the terminal to be higher than a current power level of the terminal, N being a real number greater than 0, or N being related to an actually used channel bandwidth or actual RB configuration information.

[0260] The terminal can improve the transmission performance of the terminal.

[0261] It can be understood that the implementation process of each implementation manner mentioned in the embodiment can refer to the related description of the power backoff information determination method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0262] The embodiment of the present application further provides a network side device, comprising a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running programs or instructions to realize the steps of the method embodiment shown in FIG. 5. The network side device embodiment corresponds to the network side device method embodiment described above, and each implementation process and implementation manner of the method embodiment described above can be applied to the network side device embodiment, and the same technical effects can be achieved.

[0263] Specifically, the embodiment of the present application further provides a network side device, which can be the power backoff information determination apparatus shown in FIG. 7. As shown in FIG. 10, the network side device 1000 comprises an antenna 1001, a radio frequency device 1002, a baseband device 1003, a processor 1004 and a memory 1005. The antenna 1001 is connected with the radio frequency device 1002. In the uplink direction, the radio frequency device 1002 receives information through the antenna 1001, and sends the received information to the baseband device 1003 for processing. In the downlink direction, the baseband device 1003 processes the information to be sent, and sends it to the radio frequency device 1002. The radio frequency device 1002 processes the received information and sends it out through the antenna 1001.

[0264] The method performed by the network side device in the above embodiment can be implemented in the baseband device 1003, which comprises a baseband processor.

[0265] The baseband device 1003 may, for example, comprise at least one baseband board, and a plurality of chips are arranged on the baseband board, as shown in FIG. 10. One of the chips is, for example, a baseband processor, which is connected with the memory 1005 through a bus interface to call the programs in the memory 1005 and execute the network device operations shown in the above method embodiment.

[0266] The network side device may, for example, further comprise a network interface 1006, which is, for example, a Common Public Radio Interface (CPRI).

[0267] Specifically, the network side device 1000 of the embodiment of the present application further comprises instructions or programs stored in the memory 1005 and executable on the processor 1004. The processor 1004 calls the instructions or programs in the memory 1005 to execute the method performed by each module shown in FIG. 7, and achieves the same technical effects. To avoid repetition, details are not described herein.

[0268] The radio frequency device 1002 is configured to send a bandwidth indication to a terminal by the network side device, and the bandwidth indication is used to indicate a virtual bandwidth.

[0269] Optionally, the virtual bandwidth is a bandwidth suitable for at least one of the following radio frequency indicators:

[0270] In-band emission limit, adjacent channel leakage ratio, RF limit requirements of spectral emission mask, RF limit requirements of spurious emissions.

[0271] Optionally, the virtual bandwidth comprises: a channel bandwidth in a channel bandwidth list supported by the terminal; or a bandwidth in a virtual bandwidth list supported by the terminal.

[0272] Optionally, the radio frequency device 1002 is further configured to perform at least one of the following: receiving the channel bandwidth list supported by the terminal reported by the terminal; and receiving the virtual bandwidth list supported by the terminal reported by the terminal.

[0273] The network side device described above can improve the transmission performance of the terminal.

[0274] It can be understood that the implementation process of each implementation manner mentioned in the embodiment can refer to the related description of the power backoff information determination method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0275] The embodiment of the application further provides a readable storage medium, the readable storage medium stores a program or instructions, the program or instructions are executed by a processor to realize each process of the power backoff information determination method or the bandwidth indication method embodiment, and the same technical effects can be achieved. To avoid repetition, it will not be repeated here.

[0276] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. In some examples, the readable storage medium can be a non-transitory readable storage medium.

[0277] The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface and the processor are coupled, the processor is used to run a program or instructions, realizes each process of the power backoff information determination method or the bandwidth indication method embodiment, and the same technical effects can be achieved. To avoid repetition, it will not be repeated here.

[0278] It should be understood that the chip mentioned in the embodiment of the application can also be referred to as a system on chip, a system chip, a chip system or a system on chip, etc.

[0279] The embodiment of the application further provides a computer program / program product, the computer program / program product is stored in a storage medium, the computer program / program product is executed by at least one processor to realize each process of the power backoff information determination method or the bandwidth indication method embodiment, and the same technical effects can be achieved. To avoid repetition, it will not be repeated here.

[0280] The embodiments of the present application further provide a wireless communication system, comprising a terminal and a network side device, wherein the terminal can be used to execute the steps of the power backoff information determination method provided by the embodiments of the present application, and the network side device can be used to execute the steps of the bandwidth indication method provided by the embodiments of the present application.

[0281] It should be noted that, in this document, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements are not limited to those elements, but can also include other elements not expressly listed, or inherent to such processes, methods, articles, or apparatuses. Without further limitation, an element preceded by "comprising" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element. In addition, it should be noted that the scope of the methods and apparatuses of the present embodiments are not limited to performing functions in the order recited in the figures or as described in the discussion. For example, the described methods can be performed in different order from those described or substantially concurrently or in reverse order, and additional, fewer or alternative steps can be provided. Also, features described in relation to certain examples can be combined in other examples.

[0282] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be realized by means of computer software products and general hardware platforms, and of course, can also be realized by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disc, optical disc, etc.), and includes a plurality of instructions for making the terminal or network side device execute the method described in the embodiments of the present application.

[0283] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, but not restrictive. Those skilled in the art can make many forms of embodiments under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims, and these embodiments all belong to the protection scope of the present application.

Claims

1. A method for determining power back-off information, comprising: receiving, by a terminal, a bandwidth indication, the bandwidth indication being used to indicate a virtual bandwidth; determining, by the terminal, maximum power reduction (MPR) information based on the virtual bandwidth.

2. The method of claim 1, wherein, The virtual bandwidth is a bandwidth applicable to at least one of the following radio frequency indicators: in-band emission limit, adjacent channel leakage ratio, radio frequency limit requirement of spectrum emission mask, and radio frequency limit requirement of spurious emission.

3. The method of claim 1 or 2, wherein, The determining, by the terminal, of the MPR information based on the virtual bandwidth comprises: determining, by the terminal, a maximum channel bandwidth that the terminal can support based on the virtual bandwidth, and determining the MPR information based on the maximum channel bandwidth.

4. The method of claim 3, wherein, The determining, by the terminal, of the MPR information based on the maximum channel bandwidth comprises: in a case where the maximum channel bandwidth is greater than N times of an actually used channel bandwidth of the terminal, determining the MPR information based on a channel bandwidth of N times of the actually used channel bandwidth of the terminal, N being a real number greater than 0, or N being related to the actually used channel bandwidth or actual resource block (RB) configuration information.

5. The method of any one of claims 1 to 4, wherein, The MPR information comprises at least one of: valid range of inner RBs, valid range of outer RBs, and valid range of edge RBs.

6. The method of claim 5, wherein, The maximum number of RBs corresponding to at least one of the valid range of inner RBs, the valid range of outer RBs, and the valid range of edge RBs comprises: a maximum number of RBs corresponding to the virtual bandwidth; or a maximum number of RBs corresponding to the maximum channel bandwidth; or in a case where the maximum channel bandwidth is greater than N times of the actually used channel bandwidth of the terminal, a maximum number of RBs corresponding to a channel bandwidth of N times of the actually used channel bandwidth of the terminal. The maximum channel bandwidth is determined based on the virtual bandwidth.

7. The method of claim 5 or 6, wherein, The starting position or lowest RB index of RB allocation corresponding to the valid range of inner RBs comprises: a starting position or lowest RB index of RBs actually used by the terminal plus an offset corresponding to the maximum channel bandwidth.

8. The method of claim 7, wherein, The offset corresponding to the maximum channel bandwidth comprises: a down-round value of M times of a number of RBs of a first channel bandwidth, the number of RBs of the first channel bandwidth being equal to a maximum number of RBs corresponding to a second channel bandwidth minus a maximum number of RBs corresponding to the actually used channel bandwidth of the terminal, M being a real number greater than 0, wherein: the second channel bandwidth is the virtual bandwidth; or the second channel bandwidth is less than or equal to the maximum channel bandwidth; or in a case where the maximum channel bandwidth is greater than N times of the actually used channel bandwidth of the terminal, the second channel bandwidth is equal to N times of the actually used channel bandwidth of the terminal.

9. The method of any one of claims 1 to 8, wherein, The virtual bandwidth comprises: a channel bandwidth within a list of channel bandwidths supported by the terminal; or a bandwidth within a list of virtual bandwidths supported by the terminal.

10. The method of claim 9, wherein, The bandwidth within the list of virtual bandwidths supported by the terminal comprises: a virtual bandwidth indicated by the bandwidth indication within the list of virtual bandwidths supported by the terminal; or a virtual bandwidth selected by the terminal based on the bandwidth indication within the list of virtual bandwidths supported by the terminal.

11. The method of claim 9 or 10, wherein, The method further comprises at least one of: reporting, by the terminal, a list of channel bandwidths supported by the terminal. The terminal reports a list of virtual bandwidths supported by the terminal.

12. The method of any one of claims 1 to 11, wherein, The method further comprises: The terminal determines whether to enable a power boosting function based on the virtual bandwidth, wherein in a case where the maximum channel bandwidth supported by the terminal corresponding to the virtual bandwidth is greater than N times of the actual channel bandwidth used by the terminal, the actual transmission power of the terminal is allowed to be higher than the current power level of the terminal, N is a real number greater than 0, or N is related to the actual channel bandwidth used or actual RB configuration information.

13. A bandwidth indication method, comprising: A network-side device sends a bandwidth indication to a terminal, the bandwidth indication being used to indicate a virtual bandwidth.

14. The method of claim 13, wherein, The virtual bandwidth is a bandwidth applicable to at least one of the following radio frequency indicators: In-band emission limit, adjacent channel leakage ratio, radio frequency limit requirement of spectral emission mask, and radio frequency limit requirement of spurious.

15. The method of claim 13 or 14, wherein, The virtual bandwidth comprises: A channel bandwidth within a list of channel bandwidths supported by the terminal; or A bandwidth within a list of virtual bandwidths supported by the terminal.

16. The method of claim 15, wherein, The method further comprises at least one of the following: The network-side device receives a list of channel bandwidths supported by the terminal reported by the terminal; The network-side device receives a list of virtual bandwidths supported by the terminal reported by the terminal.

17. A power backoff information determination apparatus, comprising: A receiving module configured to receive a bandwidth indication, the bandwidth indication being used to indicate a virtual bandwidth; A processing module configured to determine maximum power backoff (MPR) information based on the virtual bandwidth.

18. The apparatus of claim 17, wherein, The processing module is configured to determine a maximum channel bandwidth supported by a terminal based on the virtual bandwidth, and determine MPR information based on the maximum channel bandwidth.

19. The apparatus of claim 18, wherein, The determination of the MPR information based on the maximum channel bandwidth comprises: In a case where the maximum channel bandwidth is greater than N times of the actual channel bandwidth used by the terminal, the MPR information is determined based on a channel bandwidth of N times of the actual channel bandwidth used by the terminal, N being a real number greater than 0, or N being related to the actual channel bandwidth used or actual resource block (RB) configuration information.

20. The apparatus of any one of claims 17-19, wherein, The MPR information comprises at least one of the following: Effective range of an inner RB, effective range of an outer RB, and effective range of an edge RB.

21. The apparatus of claim 20, wherein, The maximum number of RBs corresponding to at least one of the effective range of the inner RB, the effective range of the outer RB, and the effective range of the edge RB comprises: The maximum number of RBs corresponding to the virtual bandwidth; or The maximum number of RBs corresponding to a maximum channel bandwidth; or In a case where the maximum channel bandwidth is greater than N times of the actual channel bandwidth used by the terminal, the maximum number of RBs corresponding to a channel bandwidth of N times of the actual channel bandwidth used by the terminal; The maximum channel bandwidth is determined based on the virtual bandwidth to be the maximum channel bandwidth supported by the terminal.

22. The apparatus of any one of claims 17-21, wherein, The processing module is further configured to determine whether to enable a power boosting function based on the virtual bandwidth, wherein in a case where the maximum channel bandwidth supported by the terminal corresponding to the virtual bandwidth is greater than N times of the actual channel bandwidth used by the terminal, the actual transmission power of the terminal is allowed to be higher than the current power level of the terminal.

23. A bandwidth indication apparatus, comprising: The sending module is configured to send a bandwidth indication to the terminal, the bandwidth indication being used to indicate a virtual bandwidth.

24. The apparatus of claim 23, wherein, The apparatus further includes a receiving module configured to perform at least one of the following: receiving a list of channel bandwidths supported by the terminal reported by the terminal; receiving a list of virtual bandwidths supported by the terminal reported by the terminal.

25. A terminal comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement the steps of the power backoff information determination method according to any one of claims 1 to 12.

26. A network-side device comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement the steps of the bandwidth indication method according to any one of claims 13 to 16.

27. A readable storage medium, the readable storage medium storing programs or instructions, the programs or instructions being executed by a processor to implement the steps of the power backoff information determination method according to any one of claims 1 to 12, or to implement the steps of the bandwidth indication method according to any one of claims 13 to 16.

28. A computer program product stored in a storage medium, the computer program product being executed by at least one processor to implement the steps of the power backoff information determination method according to any one of claims 1 to 12, or to implement the steps of the bandwidth indication method according to any one of claims 13 to 16.

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