CN117676784A - Carrier control method, device, network equipment and storage medium - Google Patents

Carrier control method, device, network equipment and storage medium Download PDF

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Publication number
CN117676784A
CN117676784A CN202211141404.3A CN202211141404A CN117676784A CN 117676784 A CN117676784 A CN 117676784A CN 202211141404 A CN202211141404 A CN 202211141404A CN 117676784 A CN117676784 A CN 117676784A
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China
Prior art keywords
frequency band
uplink
terminal
adjusting
power
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CN202211141404.3A
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Chinese (zh)
Inventor
刘博�
张新
毛聪杰
杨姗
佘小明
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Priority to CN202211141404.3A priority Critical patent/CN117676784A/en
Priority to PCT/CN2023/110296 priority patent/WO2024060840A1/en
Publication of CN117676784A publication Critical patent/CN117676784A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The disclosure provides a carrier control method, a carrier control device, network equipment and a storage medium, and relates to the technical field of wireless communication. The carrier control method disclosed by the disclosure comprises the following steps: under the condition that the first uplink frequency band and the first downlink frequency band are determined to be partially overlapped, the base station determines a second uplink frequency band and a second downlink frequency band according to the first uplink frequency band and the first downlink frequency band, and determines uplink subcarrier parameters, wherein a frequency interval exists between the second downlink frequency band and the second uplink frequency band; and the base station transmits the uplink subcarrier parameters to the terminal so that the terminal can adjust uplink transmitting power. By such a method, interference can be reduced and signal quality can be improved.

Description

Carrier control method, device, network equipment and storage medium
Technical Field
The disclosure relates to the technical field of wireless communication, in particular to a carrier control method, a carrier control device, network equipment and a storage medium.
Background
The super frequency fusion technology mainly solves the problem of how to integrate and utilize the frequency spectrums more efficiently when the frequency spectrums of operators have a plurality of scattered small bandwidth carriers at low frequency or medium frequency, and comprises the concepts and technical means of saving public overhead, flexible scheduling, frequency spectrum pooling and the like.
The goal of the frequency aggregation technique in the concept of spectral pooling of "super-frequency fusion" includes solving the interference problem caused by the 800mhz+900mhz aggregation. The reasons for generating interference are two aspects, on one hand, the frequency band interval is relatively close, and the isolation of the antenna is insufficient; on the other hand, the 800MHz downlink is partially overlapped with the 900MHz uplink.
Disclosure of Invention
An object of the present disclosure is to provide a solution to the problem of signal interference in the case of carrier overlapping, and improve signal transmission quality.
According to an aspect of some embodiments of the present disclosure, there is provided a carrier control method, including: under the condition that the first uplink frequency band and the first downlink frequency band are determined to be partially overlapped, the base station determines a second uplink frequency band and a second downlink frequency band according to the first uplink frequency band and the first downlink frequency band, and determines uplink subcarrier parameters, wherein a frequency interval exists between the second downlink frequency band and the second uplink frequency band; and the base station transmits the uplink subcarrier parameters to the terminal so that the terminal can adjust uplink transmitting power.
In some embodiments, the method further comprises: the base station acquires the capability information for adjusting the transmitting power level, which is reported by the terminal; and the base station determines a power adjustment scheme according to the capability information and sends the power adjustment scheme to the terminal so that the terminal determines parameters for adjusting the uplink transmitting power according to the power adjustment scheme.
In some embodiments, the power adjustment scheme includes at least one of adjusting a transmit power level or employing an additional maximum transmit power backoff.
In some embodiments, the base station determining the power adjustment scheme from the capability information comprises: under the condition that the terminal has the capability of adjusting the transmitting power level according to the capability information, determining a power adjusting scheme as adjusting the transmitting power level; and under the condition that the capability information is not received or the terminal does not have the capability of adjusting the transmitting power level according to the capability information, determining the power adjustment scheme to adopt an additional maximum transmitting power back-off mode.
In some embodiments, determining the second uplink frequency band and the second downlink frequency band from the first uplink frequency band and the first downlink frequency band comprises: and determining an upper uplink limit and a lower uplink limit of the second uplink frequency band in the frequency band range of the first uplink frequency band, and determining a lower uplink limit and a lower downlink limit of the second downlink frequency band in the frequency band range of the first downlink frequency band.
In some embodiments, determining the second uplink frequency band and the second downlink frequency band from the first uplink frequency band and the first downlink frequency band comprises: determining a protection bandwidth frequency band in the frequency range of the first downlink frequency band and the first uplink frequency band; and determining a second uplink frequency band and a second downlink frequency band according to the protection bandwidth frequency band.
In some embodiments, the guard bandwidth frequency band is determined according to a preset spectrum rule.
In some embodiments, the terminal adjusting the uplink transmit power comprises: determining a corresponding transmitting power difference according to a corresponding relation between the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the transmitting power difference, wherein the transmitting power difference is the difference between the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the maximum transmitting power corresponding to the target power level of the uplink carrier of at least one cell in the carrier aggregation scene; and adjusting the lower limit of the maximum transmitting power according to the maximum transmitting power and the transmitting power difference value corresponding to the power level of the terminal in the single carrier scene.
In some embodiments, determining the corresponding transmit power difference according to a correspondence between a maximum transmit power corresponding to a power class of the terminal in a single carrier scenario and the transmit power difference comprises: under the condition that the frequency interval is smaller than or equal to the carrier bandwidth or the frequency interval belongs to the first type, determining a corresponding transmitting power difference value according to a first corresponding relation between the maximum transmitting power corresponding to the power class of the terminal in a single carrier scene and the transmitting power difference value; and determining a corresponding transmission power difference according to a second corresponding relation between the maximum transmission power corresponding to the power level of the terminal in the single carrier scene and the transmission power difference when the frequency interval is larger than the carrier bandwidth or the frequency interval belongs to the second type, wherein the transmission power difference determined according to the first corresponding relation is larger than the transmission power difference determined according to the second corresponding relation when the maximum transmission power corresponding to the power level in the single carrier scene is the same.
In some embodiments, the terminal adjusting the uplink transmit power comprises: determining a-MPR corresponding to each waveform according to a correspondence between the waveform and a-MPR (Additional Maximum Power Reduction, additional maximum transmit power back-off); and performing an additional maximum transmit power backoff mode according to the a-MPR.
In some embodiments, determining the additional maximum power back-off for each waveform according to the correspondence between the waveform and the additional maximum power back-off comprises: determining an A-MPR corresponding to each waveform according to a third corresponding relation between the waveform and the A-MPR under the condition that the frequency interval is smaller than or equal to the carrier bandwidth or the frequency interval belongs to the first type; and determining the A-MPR corresponding to each waveform according to a fourth corresponding relation between the waveform and the A-MPR when the frequency interval is larger than the carrier bandwidth or the frequency interval belongs to the second type, wherein the A-MPR determined according to the third corresponding relation is larger than the A-MPR determined according to the fourth corresponding relation when the waveforms are the same.
In some embodiments, in the case where the power adjustment scheme is determined to adjust the transmission power level, the terminal adjusting the uplink transmission power includes: determining a corresponding transmitting power difference according to a corresponding relation between the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the transmitting power difference, wherein the transmitting power difference is the difference between the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the maximum transmitting power corresponding to the target power level of the uplink carrier of at least one cell in the carrier aggregation scene; and adjusting the lower limit of the maximum transmitting power according to the maximum transmitting power and the transmitting power difference value corresponding to the power level of the terminal in the single carrier scene.
In some embodiments, in the case that the power adjustment scheme is determined to use the additional maximum transmit power backoff mode, the terminal adjusting the uplink transmit power includes: determining the A-MPR corresponding to each waveform according to the corresponding relation between the waveform and the A-MPR; and performing an additional maximum transmit power backoff mode according to the a-MPR.
In some embodiments, the method further comprises: when selecting terminals using overlapping frequency bands in carrier aggregation combination, the base station determines whether each terminal in the candidate terminals comprises a terminal with the capability of adjusting the transmission power level; in the case that the candidate terminals include terminals with the capability of adjusting the transmission power level, selecting terminals with the capability of adjusting the transmission power level from terminals with the capability of adjusting the transmission power level to configure carrier aggregation of overlapping frequency bands; and selecting a terminal from terminals which do not have the capability of adjusting the transmission power level to configure carrier aggregation of the overlapped frequency bands when the candidate terminal does not include the terminal which has the capability of adjusting the transmission power level.
According to an aspect of some embodiments of the present disclosure, there is provided a carrier control method, including: acquiring uplink subcarrier parameters from a base station, wherein the base station determines a second uplink frequency band and a second downlink frequency band according to the first uplink frequency band and the first downlink frequency band under the condition that the first uplink frequency band and the first downlink frequency band are determined to be partially overlapped, and determines the uplink subcarrier parameters, and a frequency interval exists between the second downlink frequency band and the second uplink frequency band; and adjusting uplink transmitting power according to the uplink subcarrier parameters.
In some embodiments, the method further comprises: transmitting capability information for adjusting the transmission power level to the base station under the condition that the terminal has the capability of adjusting the transmission power level, so that the base station determines a power adjustment scheme according to the capability information; and receiving a power adjustment scheme from the base station to adjust uplink transmit power according to the power adjustment scheme.
In some embodiments, adjusting the uplink transmit power includes: determining a corresponding transmitting power difference according to a corresponding relation between the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the transmitting power difference, wherein the transmitting power difference is the difference between the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the maximum transmitting power corresponding to the target power level of the uplink carrier of at least one cell in the carrier aggregation scene; and adjusting the lower limit of the maximum transmitting power according to the maximum transmitting power and the transmitting power difference value corresponding to the power level of the terminal in the single carrier scene.
In some embodiments, adjusting the uplink transmit power includes: determining the A-MPR corresponding to each waveform according to the corresponding relation between the waveform and the A-MPR; and performing an additional maximum transmit power backoff mode according to the a-MPR.
According to an aspect of some embodiments of the present disclosure, there is provided a carrier control apparatus including: the parameter determining unit is configured to determine a second uplink frequency band and a second downlink frequency band according to the first uplink frequency band and the first downlink frequency band under the condition that the first uplink frequency band and the first downlink frequency band are determined to be partially overlapped, and determine uplink subcarrier parameters, wherein a frequency interval exists between the second downlink frequency band and the second uplink frequency band; and a first transmitting unit configured to transmit the uplink subcarrier parameter to the terminal so that the terminal adjusts uplink transmission power.
In some embodiments, the apparatus further comprises: the capacity determining unit is configured to acquire capacity information for adjusting the transmitting power level, which is reported by the terminal; and a second transmitting unit configured to determine a power adjustment scheme according to the capability information and transmit the power adjustment scheme to the terminal, so that the terminal determines parameters for adjusting uplink transmission power according to the power adjustment scheme.
In some embodiments, the apparatus further comprises: a terminal selection unit configured to determine whether each of the candidate terminals includes a terminal having a capability of adjusting a transmission power level when terminals using overlapping frequency bands in the carrier aggregation combination are selected; in the case that the candidate terminals include terminals with the capability of adjusting the transmission power level, selecting terminals with the capability of adjusting the transmission power level from terminals with the capability of adjusting the transmission power level to configure carrier aggregation of overlapping frequency bands; and selecting a terminal from terminals which do not have the capability of adjusting the transmission power level to configure carrier aggregation of the overlapped frequency bands when the candidate terminal does not include the terminal which has the capability of adjusting the transmission power level.
According to an aspect of some embodiments of the present disclosure, there is provided a carrier control apparatus including: the base station comprises a parameter acquisition unit configured to acquire uplink subcarrier parameters from a base station, wherein the base station determines a second uplink frequency band and a second downlink frequency band according to the first uplink frequency band and the first downlink frequency band under the condition that the first uplink frequency band and the first downlink frequency band are determined to be partially overlapped, and determines the uplink subcarrier parameters, and a frequency interval exists between the second downlink frequency band and the second uplink frequency band; and an adjusting unit configured to adjust uplink transmission power according to the uplink subcarrier parameter.
In some embodiments, the apparatus further comprises: a capability reporting unit configured to send capability information for adjusting the transmission power level to the base station in case the terminal has the capability of adjusting the transmission power level, so that the base station determines a power adjustment scheme according to the capability information; and a scheme acquisition unit configured to receive a power adjustment scheme from the base station, wherein the adjustment unit adjusts the uplink transmit power according to the power adjustment scheme.
According to an aspect of some embodiments of the present disclosure, there is provided a network device comprising: a memory; and a processor coupled to the memory, the processor configured to perform any one of the carrier control methods above based on instructions stored in the memory.
According to an aspect of some embodiments of the present disclosure, a non-transitory computer-readable storage medium is presented, on which is stored computer program instructions, which when executed by a processor, implement the steps of any one of the carrier control methods above.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the present disclosure, and together with the description serve to explain the present disclosure. In the drawings:
fig. 1 is a flow chart of some embodiments of a carrier control method of the present disclosure.
Fig. 2A is a schematic diagram of some embodiments of frequency allocation in a carrier control method of the present disclosure.
Fig. 2B is a schematic diagram of other embodiments of frequency allocation in the carrier control method of the present disclosure.
Fig. 3A is a flow chart of some embodiments of a power adjustment scheme in a carrier control method of the present disclosure.
Fig. 3B is a flow chart of some embodiments of another power adjustment scheme in the carrier control method of the present disclosure.
Fig. 4 is a flow chart of other embodiments of the carrier control method of the present disclosure.
Fig. 5 is a schematic diagram of some embodiments of a carrier control device at the base station side of the present disclosure.
Fig. 6 is a schematic diagram of some embodiments of a carrier control device at a terminal side of the present disclosure.
Fig. 7 is a schematic diagram of some embodiments of a network device of the present disclosure.
Fig. 8 is a schematic diagram of further embodiments of a network device of the present disclosure.
Detailed Description
The technical scheme of the present disclosure is described in further detail below through the accompanying drawings and examples.
The NR standard in the related art does not support aggregation of frequency overlapping bands, particularly, aggregation of frequency overlapping bands of a low frequency band (below 1 GHz), which is mainly limited to interference problems.
A flowchart of some embodiments of the carrier control method of the present disclosure is shown in fig. 1. The method is performed by a base station or a device located at the base station side.
In step 120, the base station determines whether there is an overlapping frequency band in the carrier aggregation combination. If the situation that the uplink frequency band and the downlink frequency band are partially overlapped exists, redefining the frequency ranges of the uplink frequency band and the downlink frequency band, and generating uplink subcarrier parameters to feed back to the terminal. In some embodiments, the uplink subcarrier parameter includes information of a second uplink frequency band of the configured terminal. In addition, when the base station adopts the frequency band to carry out downlink transmission, the first downlink frequency band is changed into the second downlink frequency band.
In some embodiments, an uplink frequency band in the carrier aggregation combination is referred to as a first uplink frequency band, a downlink frequency band is referred to as a first downlink frequency band, and when it is determined that the first uplink frequency band and the first downlink frequency band are partially overlapped, a second uplink frequency band and a second downlink frequency band are determined according to the frequency range of the first uplink frequency band and the first downlink frequency band, and a frequency interval exists between the second downlink frequency band and the second uplink frequency band, so that the redetermined uplink and downlink frequency bands are not overlapped. Further, the base station determines the uplink subcarrier parameters.
In some embodiments, the base station may determine the second uplink frequency band and the second downlink frequency band by directly determining the frequency range of the frequency band, which may be referred to as an absolute frequency limited manner in some embodiments. In some embodiments, the upper and lower limits of the second uplink frequency band are determined in the first uplink frequency band range, and the upper and lower limits of the second downlink frequency band are determined in the first downlink frequency band range. In some embodiments, as shown in fig. 2A, the frequency band 211 partially overlaps the frequency band 212, one of the frequency band 211 and the frequency band 212 being an uplink frequency band and one being a downlink frequency band. In the range of frequency band 211 [ X 1 ,Y 1 ]In-determining a first frequency band [ x ] 1 ,y 1 ]I.e. X 1 ≤x 1 <y 1 ≤Y 1 The method comprises the steps of carrying out a first treatment on the surface of the In the range of frequency band 212 [ X 2 ,Y 2 ]Internally determining a second frequency band [ x ] 2 ,y 2 ]I.e. X 2 ≤x 2 <y 2 ≤Y 2 Wherein y is 1 ＜x 2 Thereby ensuring that there is a frequency gap between the uplink and downlink frequency bands.
In some embodiments, the base station may further determine the second uplink and downlink frequency bands by defining and moving a guard bandwidth between the second uplink and downlink frequency bands, where the guard bandwidth is a frequency interval between the second uplink and downlink frequency bands. In some embodiments, such a manner may be referred to as a relative frequency limitation. The frequency range of the guard bandwidth is within the total frequency range of the first uplink and downlink bandwidths. In addition, at least a part of the protection bandwidth is positioned in the overlapping range of the first uplink frequency band and the first downlink frequency band, so that the influence of the excessive narrow bandwidth of a part of the second uplink frequency band and the second downlink frequency band on data transmission is avoided. Further, based on the determined frequency range of the guard bandwidth, a second uplink frequency band and a second downlink frequency band are determined, so that the frequency band located in the first uplink frequency band in the two frequency bands separated by the guard bandwidth is the second uplink frequency band, and the frequency band located in the first downlink frequency band is the first downlink frequency band. In some embodiments, an upper limit of a frequency band with a lower frequency may be set as a lower limit of a guard bandwidth, and the lower limit is a lower limit of a total frequency range of the first uplink and downlink bandwidths; setting the lower limit of the frequency band with higher frequency as the upper limit of the protection bandwidth, and the upper limit of the total frequency range of the first uplink and downlink bandwidths. In some embodiments, as shown in fig. 2B, the guard bandwidth is determined within the frequency band 221 u frequency band 222, and the guard bandwidth may be set in a plurality of manners, such as the first guard bandwidth 231 and the second guard bandwidth 232 shown in the figure. In some embodiments, the guard bandwidth frequency band may be determined according to a preset spectrum rule, the operator determines a frequency band range of the guard bandwidth based on the spectrum rule determined by the operator, and the two frequency bands separated by the guard bandwidth are the second uplink and downlink frequency bands. In some embodiments, based on the spectrum rule of the operator, the width of the guard bandwidth may refer to the width of the carrier bandwidth, so as to avoid the influence of the excessive narrowing of the uplink and downlink frequency bands on the data transmission while reducing the uplink and downlink interference as much as possible.
In step 140, the base station transmits the uplink subcarrier parameters to the terminal so that the terminal adjusts the uplink transmission power. In some embodiments, the scheme for power adjustment by the terminal includes at least one of adjusting a transmit power level or employing an additional maximum transmit power backoff. In some embodiments, the transmission power level may be adjusted jointly or two schemes of an additional maximum transmission power back-off mode may be adopted, and a scheme that can be used by one of the terminals is selected, so as to improve universality of power control.
By the method, the base station can adjust uplink and downlink frequency bands aiming at the carrier frequency combination with overlapping, so that interference caused by overlapping is avoided; in addition, the terminal adjusts the uplink transmitting power, so that interference caused by the fact that frequency bands are relatively close is avoided, interference is further reduced, and signal quality is improved.
In some embodiments, the terminal may send capability information to adjust the transmit power level to the base station if it has the capability to adjust the transmit power level. In some embodiments, the capability information to adjust the transmit power level may be indicated by a 1bit Decryase-PowerClass cell. In some embodiments, the capability information may be sent at any time before the terminal performs power adjustment according to the uplink subcarrier parameter, such as the time when the terminal accesses the network or switches the base station. And the base station determines a power adjustment scheme adopted by the indication terminal according to the capability information for adjusting the transmission power level. In some embodiments, the scheme for power adjustment by the terminal includes at least one of adjusting a transmit power level or employing an additional maximum transmit power backoff mode from which the base station may select and inform the terminal. In some embodiments, the power adjustment scheme may be indicated by RRC (Radio Resource Control ) signaling to employ an additional maximum transmit power backoff mode.
In some embodiments, if the base station receives the capability information for adjusting the transmission power level from the terminal, determining that the terminal has the capability information for adjusting the transmission power level, and determining that the adopted power adjustment mode is to adjust the transmission power level; if the base station does not receive the capability information of the terminal for adjusting the transmission power level, determining that the terminal does not have the capability information for adjusting the transmission power level, and determining that the power adjustment mode adopted for the terminal is a rule for adopting extra maximum transmission power back-off. By this means, the base station can determine the terminal having the capability information for adjusting the transmission power level, and thereby perform power control with priority given to the capability information for adjusting the transmission power level.
In other embodiments, if the capability of adjusting the transmission power level in the capability information received by the base station from the terminal is a preset value, determining that the terminal has the capability information of adjusting the transmission power level, and determining that the adopted power adjustment mode is to adjust the transmission power level; if the capability of adjusting the transmission power level in the capability information received by the base station from the terminal is a default value, determining that the terminal does not have the capability information of adjusting the transmission power level, and determining that the adopted power adjustment mode is a rule of adopting extra maximum transmission power back-off. By the method, the base station can clearly have and not have the terminal with the capability information for adjusting the transmitting power level, so that the power control mode is selected in a targeted manner for the terminal, and the accuracy of mode selection is improved.
In some embodiments, the base station may preferably select a terminal with the ability to adjust the transmission power level to configure carrier aggregation of the overlapping frequency bands, so as to use the adjustment of the transmission power level as much as possible and reduce the use of an additional maximum transmission power back-off mechanism to solve the interference problem.
In some embodiments, when selecting a terminal using overlapping frequency bands in a carrier aggregation combination, the base station determines whether each of the candidate terminals includes a terminal capable of adjusting a transmission power level; in the case that the candidate terminal includes a terminal having a capability of adjusting a transmission power level, selecting a terminal configuring carrier aggregation of overlapping frequency bands from among terminals having a capability of adjusting a transmission power level; in the case that the candidate terminals do not include terminals having the capability of adjusting the transmission power level but still need to select the terminals to use the overlapping frequency band in the carrier aggregation combination, the terminals configuring the carrier aggregation of the overlapping frequency band are selected from the terminals not having the capability of adjusting the transmission power level. By the method, the terminal needing power adjustment has the capability of adjusting the transmission power level as much as possible, so that the mode of adjusting the transmission power level with higher priority is adopted as much as possible, and the problem of interference is solved by adopting an extra maximum transmission power back-off mechanism with lower priority.
A flowchart of some embodiments of a power adjustment scheme in a carrier control method of the present disclosure is shown in fig. 3A. In some embodiments, the base station performs power adjustment in this manner if it determines that the terminal has the ability to adjust the transmit power level.
In step 351, according to the maximum transmission corresponding to the power level of the terminal in the single carrier scenarioPower p of radiation PowerClass.c And the difference delta p between the transmission power and the power Powerclass,c Corresponding transmit power difference Deltap is determined Powerclass,c . The transmitting power difference value is the maximum transmitting power p corresponding to the power class of the terminal in the single carrier scene PowerClass.c Maximum transmitting power p corresponding to target power level of uplink carrier of at least one cell in carrier aggregation scene of terminal powerclass,D,c Is a difference in (c). In some embodiments, 0dB Δp Powerclass,c ≤6dB。
In some embodiments, the relative size of the frequency interval and the carrier bandwidth may be used as a classification standard, and under the condition that the frequency interval is less than or equal to the carrier bandwidth, the corresponding transmission power difference value is determined according to the first corresponding relation between the maximum transmission power corresponding to the power class of the terminal in the single carrier scenario and the transmission power difference value; and under the condition that the frequency interval is larger than the carrier bandwidth, determining a corresponding transmitting power difference value according to a second corresponding relation between the maximum transmitting power corresponding to the power class of the terminal in the single carrier scene and the transmitting power difference value. In consideration of the situation that the frequency interval is smaller than or equal to the carrier bandwidth, interference is easier to occur, and the power reduction amount at the moment should be more, so that when the maximum transmission power corresponding to the power level in the single carrier scenario is the same, the transmission power difference value determined according to the first corresponding relation is larger than the transmission power difference value determined according to the second corresponding relation, and the effect of interference reduction is ensured.
In some embodiments, the operator may determine to use the first correspondence or the second correspondence according to a preset width of the self-protection bandwidth. In some embodiments, the adopted correspondence may be determined according to the type of the frequency interval, where the widths of the protection bandwidths of different types are different, for example, the frequency interval of the first type is smaller than or equal to the carrier bandwidth, the frequency interval of the second type is larger than the carrier bandwidth, if the frequency interval is determined to be in accordance with the first type, the first correspondence is adopted, and if the frequency interval is determined to be in accordance with the second type, the second correspondence is adopted.
In some embodiments, the first correspondence may be: when p is PowerClass.c At=23 dBm, Δp Powerclass,C =3 dB; when p is PowerClass.c At=26 dBm, Δp Powerclass,C ＝6dB。
In some embodiments, the second correspondence may be: when p is PowerClass.c At=23 dBm, Δp Powerclass,C =0db; when p is PowerClass.c At=26 dBm, Δp Powerclass,C =3 dB; in other cases Δp Powerclass,C ＝0dB。
In step 361, the lower limit of the maximum transmission power is adjusted according to the maximum transmission power and the transmission power difference corresponding to the power level of the terminal in the single carrier scenario.
In some embodiments, the maximum transmit power of the terminal has an upper limit of P CMAX_H Lower limit P of maximum transmission power of terminal CMAX_L The definition is as follows:
Wherein the maximum transmitting power of the terminal has an upper limit of P CMAX_H Can be determined according to the manner in the related art; in the calculation of the lower limit of the maximum transmit power,
p EMAX,C configuring a maximum transmit power of the terminal on cell c, c being a positive integer,
Dt C，c compensation parameters mpr for relaxing transmit power at band edges for terminals c For the terminal's maximum transmit power back-off value,
Δmpr c for the difference in maximum transmit power backoff of the terminal,
a-mpr c for the terminal to have an additional maximum transmit power back-off value,
Dt IB，c compensating parameters for insertion loss of the transmit power of the terminal,
Dt RxSRS，c compensation parameters employed in a predetermined scenario when transmitting an uplink sounding reference signal for a terminal,
P EMAX,CA configuring maximum transmit power limit for carrier aggregation of a terminal for a base station，
p PowerClass,CA The maximum transmit power corresponding to the transmit power level for the terminal carrier aggregation,
△p PowerClass，CA for the maximum transmit power difference corresponding to the transmit power level of the terminal carrier aggregation,
p Powerclass，c for the maximum transmit power corresponding to the transmit power level of the terminal in cell c,
by introducing Δp Powerclass，c Intervention for the transmit power is achieved.
By means of the method in the embodiment, under the condition that the terminal has the capability of adjusting the transmission power level, the transmission power difference value can be determined, and further the lower limit of the maximum transmission power of the terminal is adjusted, so that uplink and downlink interference is reduced by utilizing the capability of adjusting the transmission power level of the terminal, and signal transmission quality is improved.
A flow chart of some embodiments of another power adjustment scheme in the carrier control method of the present disclosure is shown in fig. 3B.
In step 352, according to the correspondence between waveforms and a-MPR, a-MPR of different RBs (Resource blocks) of the uplink carrier corresponding to each waveform is determined. In some embodiments, the correspondence may be determined by determining, according to available frequency resources configured by the base station, interference requirements of downlink carriers in the overlapping frequency bands, and further referring to the capability of the terminal filter.
In some embodiments, the relative size of the frequency interval and the carrier bandwidth may be used as a classification criterion to select different correspondence. In some embodiments, the waveforms include DFT-s-OFDM (Discrete Fourier Transform-Spread Orthogonal Frequency Division Multiplexing, discrete Fourier transform spread orthogonal frequency division multiplexing) and CP-OFDM (Cyclic Prefix Orthogonal Frequency Division Multiplexing ), and the correspondence between waveforms and A-MPR may be as shown in Table 1:
TABLE 1 correspondence between waveforms and A-MPR
Wherein v1 to v4 are A-MPR values. When the frequency interval is less than or equal to the carrier bandwidth, determining the A-MPR corresponding to each waveform according to a third corresponding relation between the waveform and the A-MPR (namely, selecting the configuration mode 1 in the table); when the frequency interval is greater than the carrier bandwidth, the a-MPR corresponding to each waveform is determined according to the fourth correspondence between waveforms and a-MPR (i.e., selecting configuration mode 2 in the table).
In some embodiments, determining the additional maximum power back-off for each waveform according to the correspondence between the waveform and the additional maximum power back-off comprises: determining an A-MPR corresponding to each waveform according to a third corresponding relation between the waveform and the A-MPR under the condition that the frequency interval is smaller than or equal to the carrier bandwidth or the frequency interval belongs to the first type; and determining the A-MPR corresponding to each waveform according to a fourth corresponding relation between the waveform and the A-MPR when the frequency interval is larger than the carrier bandwidth or the frequency interval belongs to the second type. In some embodiments, in consideration of the situation that the frequency interval is equal to or less than the carrier bandwidth, interference is more likely to occur, so that the a-MPR determined according to the third correspondence is greater than the a-MPR determined according to the fourth correspondence in the case that the waveforms are the same, thereby ensuring the effect of interference reduction.
In some embodiments, the operator may determine to use the third corresponding relationship or the fourth corresponding relationship according to the preset width of the own protection bandwidth. In some embodiments, the adopted correspondence may be determined according to the type of the frequency interval, where the widths of the protection bandwidths of different types are different, for example, the frequency interval of the first type is smaller than or equal to the carrier bandwidth, the frequency interval of the second type is larger than the carrier bandwidth, when it is determined that the frequency interval accords with the first type, the third correspondence is adopted, and when it is determined that the frequency interval accords with the second type, the fourth correspondence is adopted.
In some embodiments, the v1, v3 ranges from [0-15dB ], and the v2, v4 ranges from [0-10dB ].
In step 362, an additional maximum transmit power backoff mode is performed according to the a-MPR, and the additional maximum transmit power backoff mechanism is utilized to reduce interference.
By means of the method in the embodiment, the additional maximum transmitting power back-off value can be determined, and then the uplink and downlink interference is reduced by using the additional maximum transmitting power back-off mechanism of the terminal, and the signal transmission quality is improved.
There are several solutions to the signal interference problem in the related art. If from the antenna angle, the number of antennas is increased, and different frequency bands are transmitted and received through different antennas, so that a certain space isolation degree is achieved, or from the frequency division angle, new frequency bands which are not overlapped or have a certain interval are redefined on the aggregated frequencies, a customized filter matched with the new frequency bands is adopted, or from the terminal transmitting power angle, additional maximum transmitting power rollback is adopted, namely the terminal transmitting power is reduced.
However, since the size of the low-frequency antenna is large, the difficulty of implementing the low-frequency antenna is great when the low-frequency antenna is added on the terminal side; the mode of re-dividing the frequency defines a new frequency band and a custom filter is limited by the development of an industrial chain, and influences the deployment process of an operator network scheme; the mode of controlling the terminal power can meet the adjacent frequency radiation requirement for the non-overlapped frequency band, but the blocking influence on the receiver is considered for the overlapped frequency band, the power needing to be backed back is large, and the practical deployment value is not achieved.
In the scheme disclosed by the invention, the base station determines available frequency resources of the overlapped frequency bands, and the terminal adopts a power control scheme, so that the reliability and flexibility of interference reduction of the overlapped frequency bands in carrier aggregation are improved, and the method is beneficial to being put into production and use. In addition, the terminal reports the capability of reducing the maximum transmitting power level in the power control scheme to the base station, so that the base station can preferentially select the terminal with the capability to configure carrier aggregation of the overlapped frequency bands, thereby improving the success rate of power control and the success rate of interference reduction.
A flowchart of further embodiments of the carrier control method of the present disclosure is shown in fig. 4. The method is performed by the terminal or a device located at the terminal side.
In step 420, uplink subcarrier parameters from the base station are acquired. In some embodiments, the uplink subcarrier parameter includes information of a second uplink frequency band of the configured terminal. Under the condition that the first uplink frequency band and the first downlink frequency band are determined to be partially overlapped, the base station determines a second uplink frequency band and a second downlink frequency band according to the first uplink frequency band and the first downlink frequency band, determines uplink subcarrier parameters, and a frequency interval exists between the second downlink frequency band and the second uplink frequency band.
In some embodiments, the base station may determine the second downlink frequency band and the second uplink frequency band in the manner described in the embodiment shown in fig. 1 above, and provide the uplink subcarrier parameters to the terminal.
In step 440, the terminal adjusts its own uplink transmit power according to the uplink subcarrier parameters.
By the method, the base station can adjust uplink and downlink frequency bands aiming at the carrier frequency combination with overlapping, so that interference caused by overlapping is avoided; in addition, the terminal can adjust uplink transmitting power, interference caused by the fact that frequency bands are relatively close is avoided, interference is further reduced, and signal quality is improved.
In some embodiments, if the terminal has the capability of adjusting the transmission power level, the terminal may send capability information for adjusting the transmission power level to the base station, so that the base station determines that the terminal has the capability of adjusting the transmission power level. In other embodiments, the terminal may send capability information for adjusting the transmission power level to the base station, where if the terminal has the capability for adjusting the transmission power level, the capability information carries a preset value; otherwise, the capability of adjusting the transmission power level in the capability information is a default value, so that the base station determines whether the terminal has the capability of adjusting the transmission power level, and screens out the terminal which is confirmed to not have the capability. Further, after receiving the power adjustment scheme from the base station, the terminal adjusts the uplink transmission power according to the power adjustment scheme. In some embodiments, the power adjustment scheme may be obtained through RRC signaling. By the method, the terminal can report the self capacity to the base station, so that the base station can control the power by preferentially adopting the capacity information for adjusting the transmitting power level.
In some embodiments, adjusting the uplink transmit power includes at least one of adjusting a transmit power level or employing an additional maximum transmit power backoff. In some embodiments, the transmission power level may be adjusted jointly or two schemes of an additional maximum transmission power back-off mode may be adopted, and a scheme that can be used by one of the terminals is selected, so as to improve universality of power control.
In some embodiments, the manner in which the transmit power level is adjusted may be as shown in the corresponding embodiment of fig. 3A; in some embodiments, the additional maximum transmit power backoff may be employed as shown in the corresponding embodiment of fig. 3B. By the method, uplink and downlink interference is reduced by utilizing the capability of the terminal for adjusting the transmission power level or an additional maximum transmission power back-off mechanism, and the signal transmission quality is improved.
Hereinafter, the carrier control method of the present disclosure will be described with specific examples, and the selection of data and processing manners in the examples is merely an example, and does not cover the case of all carrier control, and does not constitute an undue limitation of the present disclosure.
[ example 1 ]
The frequency definitions of the carrier aggregation combinations Band 5 and Band 8 are shown in table 2 below, and it can be seen that the downlink of Band 5 overlaps with the uplink of Band 8 by a partial frequency (14 MHz).
TABLE 2 frequency ranges for Band n5 and Band n8
NR operation frequency band Uplink operation frequency band Downlink operation frequency band
n5 824MHz–849MHz 869MHz–894MHz
n8 880MHz–915MHz 925MHz–960MHz
The absolute frequency limit of the carrier aggregation of the terminal Band n5+ Band n8 is defined in the protocol 38.101-1, and is specifically defined as follows:
TABLE 3 frequency limitation
The base station configures the uplink subcarrier interval of Band n8 to be 30kHz through SIB1, the carrier bandwidth to be 24RB, and the carrier bandwidth to be 10MHz. By the limitation in table 2, the frequency interval is 14MHz, more than 10MHz, and therefore the second correspondence relationship is adopted.
In some embodiments, the terminal reporting supports the ability to reduce the maximum transmit power level, as indicated by a Declean-PowerClass cell.
In some embodiments, the terminal determines the large transmit power level difference based on parameters such as frequency spacing and channel bandwidth configured by the base station.
The base station determines that the interval between the downlink of Band 5 and the uplink of Band 8 is 24MHz according to the frequency spectrum planning of an operator, and is larger than the uplink channel bandwidth of Band 8 configured by the base station by 10MHz.
Further consider the original power level ppowerclasses, c=23 dBm,
based on the second correspondence, the lower limit P of the maximum transmitting power of the terminal is obtained CMAX_L The maximum transmit power difference deltap in (a) Powerclass,c =0db, i.e. the terminal can meet the uplink and downlink carrier interference requirements under this frequency limitation without power level reduction.
[ example 2 ]
The frequency definitions of the carrier aggregation combinations Band 5 and Band 8 are also as shown in table 2 above.
The protocol 38.101-1 defines the relative frequency limit of the terminal Band n5+band n8 carrier aggregation, and is specifically defined as follows:
table 4 frequency limitation
The base station configures the uplink subcarrier interval of Band n8 to be 30kHz through SIB1, and the carrier bandwidth is 24RB, corresponding to 10MHz bandwidth. Taking the protection bandwidth type 2 as an example, the protection bandwidth is smaller than the carrier bandwidth, that is, the frequency interval is smaller than the carrier bandwidth, and a third corresponding relationship is adopted.
The terminal does not report the capability of supporting the reduction of the maximum transmission power level, namely, the Declean-PowerClass cell is in a default state, so that the terminal adopts additional maximum transmission power back-off according to the Band 5 and Band 8 relative frequency limit constrained by the base station. The base station configures the terminal to adopt an additional maximum transmission power back-off mechanism through RRC signaling, and defines the additional maximum transmission power back-off requirement of the terminal as shown in table 4.
TABLE 5 correspondence between waveforms and A-MPR
Waveform shape RB arrangement mode 1 RB configuration mode 2
DFT-s-OFDM ≤6dB ≤3dB
CP-OFDM ≤8dB ≤4dB
Therefore, the terminal adopts the extra maximum power back-off of the RB configuration mode 1 to meet the uplink and downlink carrier interference requirements under the frequency limit.
A schematic diagram of some embodiments of the base station side carrier control device 50 of the present disclosure is shown in fig. 5.
The parameter determination unit 51 can determine whether there is an overlapping frequency band in the combination of carrier aggregation. If the situation that the uplink frequency band and the downlink frequency band are partially overlapped exists, redefining the frequency ranges of the uplink frequency band and the downlink frequency band, and generating uplink subcarrier parameters to feed back to the terminal. In some embodiments, the uplink subcarrier parameter includes information of a second uplink frequency band of the configured terminal.
The first transmitting unit 52 can transmit the uplink subcarrier parameters to the terminal so that the terminal adjusts the uplink transmission power. In some embodiments, the scheme for power adjustment by the terminal includes at least one of adjusting a transmit power level or employing an additional maximum transmit power backoff.
The carrier control device can adjust uplink and downlink frequency bands aiming at the carrier frequency combination with overlapping, so that interference caused by overlapping is avoided; in addition, the terminal adjusts the uplink transmitting power, so that interference caused by the fact that frequency bands are relatively close is avoided, interference is further reduced, and signal quality is improved.
In some embodiments, as shown in fig. 5, the carrier control device 50 further includes a capability determining unit 53 and a second transmitting unit 54.
The capability determining unit 53 can acquire capability information for adjusting the transmission power level reported by the terminal. The second transmitting unit 54 can determine a power adjustment scheme according to the capability information and transmit the power adjustment scheme to the terminal, so that the terminal determines parameters for adjusting uplink transmission power according to the power adjustment scheme.
In some embodiments, if the capability determining unit 53 determines that the terminal has capability information for adjusting the transmission power level, the power adjustment mode used is selected to be the adjustment of the transmission power level; if the capability determining unit 53 determines that the terminal does not have capability information for adjusting the transmission power level, a rule is selected that determines that the power adjustment mode to be adopted is to adopt the extra maximum transmission power backoff.
Such a carrier control device can identify a terminal having capability information for adjusting the transmission power level, and preferably perform power control by using the capability information for adjusting the transmission power level.
In some embodiments, as shown in fig. 5, the carrier control apparatus 50 further includes a terminal selection unit 55, which is capable of preferentially selecting a terminal with a capability of adjusting a transmission power level to configure carrier aggregation of overlapping frequency bands when selecting a terminal of carrier aggregation, so as to solve the interference problem by adjusting the transmission power level as much as possible and reducing the use of an additional maximum transmission power back-off mechanism.
In some embodiments, when the base station selects a terminal using the overlapping frequency bands in the carrier aggregation combination, the terminal selection unit 55 determines whether each of the candidate terminals includes a terminal having the capability of adjusting the transmission power level; in the case that the candidate terminal includes a terminal having a capability of adjusting a transmission power level, selecting a terminal configuring carrier aggregation of overlapping frequency bands from among terminals having a capability of adjusting a transmission power level; in the case that the candidate terminals do not include terminals having the capability of adjusting the transmission power level but still need to select the terminals to use the overlapping frequency band in the carrier aggregation combination, the terminals configuring the carrier aggregation of the overlapping frequency band are selected from the terminals not having the capability of adjusting the transmission power level. The device can enable the terminal needing power adjustment to have the capability of adjusting the transmission power level as much as possible, so that the mode of adjusting the transmission power level with higher priority is adopted as much as possible, and the problem of interference is solved by adopting an extra maximum transmission power back-off mechanism with lower priority.
A schematic diagram of some embodiments of a terminal-side carrier control device 60 of the present disclosure is shown in fig. 6.
The parameter acquisition unit 61 is capable of acquiring uplink subcarrier parameters from the base station. In some embodiments, the uplink subcarrier parameter includes information of a second uplink frequency band of the configured terminal. Under the condition that the first uplink frequency band and the first downlink frequency band are determined to be partially overlapped, the base station determines a second uplink frequency band and a second downlink frequency band according to the first uplink frequency band and the first downlink frequency band, determines uplink subcarrier parameters, and a frequency interval exists between the second downlink frequency band and the second uplink frequency band. In some embodiments, the base station may determine the second downlink frequency band and the second uplink frequency band in the manner described in the embodiment shown in fig. 1 above, and provide the uplink subcarrier parameters to the terminal.
The adjusting unit 62 can adjust the uplink transmission power of the terminal according to the uplink subcarrier parameter.
The carrier control device can adjust uplink and downlink frequency bands aiming at the carrier frequency combination with overlapping at the base station, adjusts uplink transmitting power of the terminal on the basis of avoiding interference caused by overlapping, avoids interference caused by relatively close frequency bands, further reduces interference and improves signal quality.
In some embodiments, as shown in fig. 6, the carrier control device 60 further includes a capability reporting unit 63 and a scheme acquiring unit 64.
The capability reporting unit 63 can send capability information for adjusting the transmission power level to the base station in the case that the terminal has the capability for adjusting the transmission power level, so that the base station determines that the terminal has the capability for adjusting the transmission power level. In other embodiments, the capability reporting unit 63 may send capability information for adjusting the transmission power level to the base station, where the capability information carries a preset value if the terminal has the capability for adjusting the transmission power level; otherwise, the capability of adjusting the transmission power level in the capability information is a default value, so that the base station determines whether the terminal has the capability of adjusting the transmission power level, and screens out the terminal which is confirmed to not have the capability.
The scheme acquisition unit 64 receives a power adjustment scheme from the base station, and the adjustment unit 62 adjusts the uplink transmission power according to the power adjustment scheme.
The device can report the capability of the terminal to the base station, thereby facilitating the base station to perform power control by preferentially adopting the mode of adjusting the capability information of the transmitting power level.
A schematic structural diagram of an embodiment of a network device of the present disclosure is shown in fig. 7, where the network device may be a base station or a terminal, or a carrier control device located at a base station or a terminal side. The network device includes a memory 701 and a processor 702. Wherein: memory 701 may be a magnetic disk, flash memory, or any other non-volatile storage medium. The memory is used to store instructions in the corresponding embodiments of the carrier control method hereinabove. Processor 702 is coupled to memory 701 and may be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 702 is configured to execute instructions stored in the memory to reduce interference and improve signal quality.
In one embodiment, as also shown in FIG. 8, network device 800 includes a memory 801 and a processor 802. The processor 802 is coupled to the memory 801 by a BUS 803. The network device 800 may also be connected to external storage 805 via a storage interface 804 for invoking external data, and may also be connected to a network or another computer system (not shown) via a network interface 806. And will not be described in detail herein.
In this embodiment, the data instruction is stored in the memory, and then the processor processes the instruction, so that interference can be reduced, and signal quality can be improved.
In another embodiment, a computer readable storage medium has stored thereon computer program instructions which, when executed by a processor, implement the steps of the method in the corresponding embodiments of the carrier control method. It will be apparent to those skilled in the art that embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Thus far, the present disclosure has been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
The methods and apparatus of the present disclosure may be implemented in a number of ways. For example, the methods and apparatus of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, firmware. The above-described sequence of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the sequence specifically described above unless specifically stated otherwise. Furthermore, in some embodiments, the present disclosure may also be implemented as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
Finally, it should be noted that: the above embodiments are merely for illustrating the technical solution of the present disclosure and are not limiting thereof; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will appreciate that: modifications may be made to the specific embodiments of the disclosure or equivalents may be substituted for part of the technical features; without departing from the spirit of the technical solutions of the present disclosure, it should be covered in the scope of the technical solutions claimed in the present disclosure.

Claims (25)

1. A carrier control method, comprising:
under the condition that the base station determines that a first uplink frequency band and a first downlink frequency band are partially overlapped, a second uplink frequency band and a second downlink frequency band are determined according to the first uplink frequency band and the first downlink frequency band, and uplink subcarrier parameters are determined, wherein a frequency interval exists between the second downlink frequency band and the second uplink frequency band; and
and the base station transmits the uplink subcarrier parameters to the terminal so that the terminal can adjust uplink transmitting power.
2. The method of claim 1, further comprising:
the base station acquires capability information for adjusting the transmitting power level, which is reported by a terminal; and
and the base station determines a power adjustment scheme according to the capability information and sends the power adjustment scheme to the terminal so that the terminal determines parameters for adjusting uplink transmitting power according to the power adjustment scheme.
3. The method of claim 2, wherein the power adjustment scheme comprises at least one of adjusting a transmit power level or employing an additional maximum transmit power backoff.
4. The method of claim 3, wherein the base station determining a power adjustment scheme from the capability information comprises:
determining that the power adjustment scheme is to adjust the transmission power level under the condition that the terminal has the capability of adjusting the transmission power level according to the capability information; and
and under the condition that the capability information is not received or the terminal does not have the capability of adjusting the transmitting power level according to the capability information, determining the power adjustment scheme to adopt an additional maximum transmitting power back-off mode.
5. The method of claim 1, wherein the determining a second uplink frequency band and a second downlink frequency band from the first uplink frequency band and the first downlink frequency band comprises:
and determining an upper uplink limit and a lower uplink limit of the second uplink frequency band in the frequency band range of the first uplink frequency band, and determining a lower uplink limit and a lower downlink limit of the second downlink frequency band in the frequency band range of the first downlink frequency band.
6. The method of claim 1, wherein the determining a second uplink frequency band and a second downlink frequency band from the first uplink frequency band and the first downlink frequency band comprises:
determining a guard bandwidth frequency band in the frequency ranges of the first downlink frequency band and the first uplink frequency band; and
and taking the guard bandwidth frequency band as the frequency interval of a second uplink frequency band and the second downlink frequency band, and determining the second uplink frequency band and the second downlink frequency band according to the guard bandwidth frequency band.
7. The method of claim 6, wherein the guard bandwidth frequency band is determined according to a preset spectrum rule.
8. The method of claim 1, wherein the terminal adjusting uplink transmit power comprises:
determining a corresponding transmitting power difference value according to a corresponding relation between the maximum transmitting power corresponding to the power level of the terminal in a single carrier scene and the transmitting power difference value, wherein the transmitting power difference value is a difference value between the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the maximum transmitting power corresponding to the target power level of the uplink carrier of at least one cell in the carrier aggregation scene; and
And adjusting the lower limit of the maximum transmitting power according to the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the transmitting power difference value.
9. The method of claim 8, wherein the determining the corresponding transmit power difference according to the correspondence between the maximum transmit power corresponding to the power class of the terminal in the single carrier scenario and the transmit power difference comprises:
under the condition that the frequency interval is smaller than or equal to the carrier bandwidth or the frequency interval belongs to a first type, determining a corresponding transmitting power difference value according to a first corresponding relation between the maximum transmitting power corresponding to the power class of the terminal in a single carrier scene and the transmitting power difference value; and
under the condition that the frequency interval is larger than the carrier bandwidth or the frequency interval belongs to the second type, determining a corresponding transmitting power difference value according to a second corresponding relation between the maximum transmitting power corresponding to the power class of the terminal in the single carrier scene and the transmitting power difference value,
and under the condition that the maximum transmitting power corresponding to the power level in the single carrier scene is the same, the transmitting power difference value determined according to the first corresponding relation is larger than the transmitting power difference value determined according to the second corresponding relation.
10. The method of claim 1, wherein the terminal adjusting the uplink transmit power comprises:
determining the A-MPR corresponding to each waveform according to the corresponding relation between the waveform and the additional maximum transmitting power back-off A-MPR; and
and executing the additional maximum transmission power back-off mode according to the A-MPR.
11. The method of claim 10, wherein the determining the additional maximum power back-off for each waveform according to the correspondence between waveforms and additional maximum power back-offs comprises:
determining an A-MPR corresponding to each waveform according to a third corresponding relation between the waveform and the A-MPR when the frequency interval is smaller than or equal to a carrier bandwidth or the frequency interval belongs to a first type; and
in case the frequency interval is larger than the carrier bandwidth, or the frequency interval belongs to the second type, determining an a-MPR corresponding to each waveform according to a fourth correspondence between waveforms and the a-MPR,
and under the condition that the waveforms are the same, the A-MPR determined according to the third corresponding relation is larger than the A-MPR determined according to the fourth corresponding relation.
12. The method of claim 3 or 4, wherein, in the case where the power adjustment scheme is determined to adjust a transmission power level, the terminal adjusts an uplink transmission power, comprising:
Determining a corresponding transmitting power difference value according to a corresponding relation between the maximum transmitting power corresponding to the power level of the terminal in a single carrier scene and the transmitting power difference value, wherein the transmitting power difference value is a difference value between the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the maximum transmitting power corresponding to the target power level of the uplink carrier of at least one cell in the carrier aggregation scene; and
and adjusting the lower limit of the maximum transmitting power according to the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the transmitting power difference value.
13. The method according to claim 3 or 4, wherein, in the case that the power adjustment scheme is determined to use an additional maximum transmit power back-off mode, the terminal adjusting uplink transmit power comprises:
determining the A-MPR corresponding to each waveform according to the corresponding relation between the waveform and the additional maximum transmitting power back-off A-MPR; and
and executing the additional maximum transmission power back-off mode according to the A-MPR.
14. The method of claim 2, further comprising:
when selecting terminals using overlapping frequency bands in carrier aggregation combination, the base station determines whether each terminal in the candidate terminals comprises a terminal with the capability of adjusting the transmission power level;
In the case that the candidate terminals include terminals with the capability of adjusting the transmission power level, selecting terminals with the capability of adjusting the transmission power level from terminals with the capability of adjusting the transmission power level to configure carrier aggregation of overlapping frequency bands;
and selecting a terminal from terminals which do not have the capability of adjusting the transmission power level to configure carrier aggregation of the overlapped frequency bands when the candidate terminal does not include the terminal which has the capability of adjusting the transmission power level.
15. A carrier control method, comprising:
acquiring uplink subcarrier parameters from a base station, wherein the base station determines a second uplink frequency band and a second downlink frequency band according to a first uplink frequency band and a first downlink frequency band under the condition that the first uplink frequency band and the first downlink frequency band are determined to be partially overlapped, and determines the uplink subcarrier parameters, and a frequency interval exists between the second downlink frequency band and the second uplink frequency band; and
and adjusting uplink transmitting power according to the uplink subcarrier parameters.
16. The method of claim 15, further comprising:
transmitting capability information for adjusting the transmission power level to a base station under the condition that the terminal has the capability of adjusting the transmission power level, so that the base station determines a power adjustment scheme according to the capability information; and
And receiving a power adjustment scheme from the base station so as to adjust uplink transmitting power according to the power adjustment scheme.
17. The method of claim 15, wherein the adjusting uplink transmit power comprises:
determining a corresponding transmitting power difference value according to a corresponding relation between the maximum transmitting power corresponding to the power level of the terminal in a single carrier scene and the transmitting power difference value, wherein the transmitting power difference value is a difference value between the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the maximum transmitting power corresponding to the target power level of the uplink carrier of at least one cell in the carrier aggregation scene; and
and adjusting the lower limit of the maximum transmitting power according to the maximum transmitting power corresponding to the power level of the terminal in the single carrier scene and the transmitting power difference value.
18. The method of claim 15, wherein the adjusting uplink transmit power comprises:
determining the A-MPR corresponding to each waveform according to the corresponding relation between the waveform and the additional maximum transmitting power back-off A-MPR; and
and executing the additional maximum transmission power back-off mode according to the A-MPR.
19. A carrier control device comprising:
A parameter determining unit configured to determine a second uplink frequency band and a second downlink frequency band according to the first uplink frequency band and the first downlink frequency band and determine uplink subcarrier parameters, where a frequency interval exists between the second downlink frequency band and the second uplink frequency band, when it is determined that the first uplink frequency band and the first downlink frequency band are partially overlapped; and
and the first sending unit is configured to send the uplink subcarrier parameters to the terminal so that the terminal adjusts uplink transmission power.
20. The apparatus of claim 19, further comprising:
the capacity determining unit is configured to acquire capacity information for adjusting the transmitting power level, which is reported by the terminal; and
and the second sending unit is configured to determine a power adjustment scheme according to the capability information and send the power adjustment scheme to the terminal, so that the terminal determines parameters for adjusting the uplink transmission power according to the power adjustment scheme.
21. The apparatus of claim 20, further comprising:
a terminal selection unit configured to determine whether each of the candidate terminals includes a terminal having a capability of adjusting a transmission power level when terminals using overlapping frequency bands in the carrier aggregation combination are selected; in the case that the candidate terminals include terminals with the capability of adjusting the transmission power level, selecting terminals with the capability of adjusting the transmission power level from terminals with the capability of adjusting the transmission power level to configure carrier aggregation of overlapping frequency bands; and selecting a terminal from terminals which do not have the capability of adjusting the transmission power level to configure carrier aggregation of the overlapped frequency bands when the candidate terminal does not include the terminal which has the capability of adjusting the transmission power level.
22. A carrier control device comprising:
a parameter obtaining unit configured to obtain an uplink subcarrier parameter from a base station, where the base station determines a second uplink frequency band and a second downlink frequency band according to the first uplink frequency band and the first downlink frequency band when determining that the first uplink frequency band and the first downlink frequency band are partially overlapped, and determines an uplink subcarrier parameter, and a frequency interval exists between the second downlink frequency band and the second uplink frequency band; and
and the adjusting unit is configured to adjust uplink transmitting power according to the uplink subcarrier parameters.
23. The apparatus of claim 22, further comprising:
a capability reporting unit configured to send capability information for adjusting the transmission power level to the base station in case that the terminal has the capability for adjusting the transmission power level, so that the base station determines a power adjustment scheme according to the capability information; and
and the scheme acquisition unit is configured to receive a power adjustment scheme from the base station, wherein the adjustment unit adjusts uplink transmission power according to the power adjustment scheme.
24. A network device, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the method of any of claims 1-18 based on instructions stored in the memory.
25. A non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the method of any of claims 1 to 18.
CN202211141404.3A 2022-09-20 2022-09-20 Carrier control method, device, network equipment and storage medium Pending CN117676784A (en)

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US10616835B2 (en) * 2016-06-02 2020-04-07 Lg Electronics Inc. Method for controlling uplink transmission power in wireless communication system, and apparatus therefor
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