CN117676822A - Uplink transmitting power adjusting method and device - Google Patents

Uplink transmitting power adjusting method and device Download PDF

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Publication number
CN117676822A
CN117676822A CN202211095715.0A CN202211095715A CN117676822A CN 117676822 A CN117676822 A CN 117676822A CN 202211095715 A CN202211095715 A CN 202211095715A CN 117676822 A CN117676822 A CN 117676822A
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China
Prior art keywords
power
uplink
terminal equipment
access network
terminal
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CN202211095715.0A
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Chinese (zh)
Inventor
巴赛尔·加拉德
曹亘
李福昌
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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Priority to CN202211095715.0A priority Critical patent/CN117676822A/en
Publication of CN117676822A publication Critical patent/CN117676822A/en
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    • 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
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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

Abstract

The invention provides a method and a device for adjusting uplink transmitting power, which relate to the technical field of communication and can enable terminal equipment adopting a Frequency Division Duplex (FDD) mode to be capable of taking uplink transmission performance and downlink transmission performance into consideration. The method comprises the following steps: in the process of receiving downlink data by a terminal device adopting a frequency division duplex FDD mode, the terminal device determines a maximum receiving sensitivity back-off value MSD in the uplink transmission process; and the terminal equipment reduces the uplink transmitting power in response to the MSD being greater than or equal to a preset threshold.

Description

Uplink transmitting power adjusting method and device
Technical Field
The present invention relates to the field of communications, and in particular, to a method and apparatus for adjusting uplink transmit power.
Background
In order to compensate the uplink coverage of the 5G network and improve the use experience of cell edge users, some operators have also developed the standardization work of high-power terminals in the 5G frequency division duplex (frequency division duplex, FDD) frequency band.
For a high-power terminal in an FDD frequency band, especially for the situation that the uplink and downlink duplex frequency bands are closely spaced, uplink transmission can cause serious interference to downlink reception, so that the downlink reception of terminal equipment is affected, that is, the downlink performance cannot be guaranteed, and uplink performance gain caused by high transmission power is offset to a certain extent.
When the terminal equipment performs high-power transmission, how to take both uplink transmission performance and downlink transmission performance into consideration becomes a technical problem to be solved.
Disclosure of Invention
The invention provides a method and a device for adjusting uplink transmitting power, which are used for reducing the negative influence of uplink transmitting on downlink receiving under the working condition of a high-power mode of terminal equipment so as to consider both the performance of uplink transmission and the performance of downlink transmission.
To achieve the above object. The invention adopts the following technical scheme:
in a first aspect, a method for adjusting uplink transmit power is provided, where the method includes: a terminal device adopting a frequency division duplex FDD mode determines a maximum receiving sensitivity back-off value MSD in the uplink transmission process; and the terminal equipment reduces the uplink transmitting power in response to the MSD being greater than or equal to a preset threshold.
The technical scheme provided by the invention has at least the following beneficial effects: when MSD is larger than or equal to a preset threshold value in the data transmission process of the terminal equipment, larger receiving power is needed to meet the normal downlink communication requirement, and uplink performance gain caused by high-power transmission is offset. At this time, by reducing the uplink transmitting power, on the premise of ensuring that the high-power transmission is maintained and the uplink performance is improved, the adverse effect on the downlink receiving process is reduced or eliminated, and the downlink receiving performance is ensured.
In one possible implementation manner, the method further includes: the terminal equipment receives a power back-off instruction from the access network equipment, wherein the power back-off instruction is used for indicating the terminal equipment adopting the FDD mode to reduce uplink transmitting power when a preset condition is met, and the preset condition comprises that the maximum receiving sensitivity back-off value MSD of the terminal equipment in the uplink transmission process is larger than or equal to a preset threshold value.
In one possible implementation manner, the method further includes: the terminal equipment sends capability information to the access network equipment, wherein the capability information is used for indicating whether the terminal equipment has the capability of reducing uplink transmitting power when a preset condition is met.
In one possible implementation manner, the capability information includes a preset threshold when the capability information is used to indicate that the terminal device has the capability of reducing uplink transmission power when a preset condition is met.
In one possible implementation manner, the terminal device reduces uplink transmission power, including: and the terminal equipment takes the preset power adjustment value as a step length to reduce the uplink transmitting power, and stops adjusting the uplink transmitting power when the MSD in the uplink transmission process is smaller than a preset threshold value.
In a second aspect, a method for adjusting uplink transmit power is provided, where the method includes: the access network equipment generates a power back-off instruction, wherein the power back-off instruction is used for indicating the terminal equipment adopting a Frequency Division Duplex (FDD) mode to reduce uplink transmitting power when a preset condition is met, and the preset condition comprises that a maximum receiving sensitivity back-off value (MSD) of the terminal equipment in an uplink transmission process is larger than or equal to a preset threshold value; the access network equipment sends a power back-off instruction to the terminal equipment.
The technical scheme provided by the invention has at least the following beneficial effects: the access network equipment can generate a power back-off instruction and issue the terminal equipment, and is used for indicating the terminal equipment to reduce the uplink transmitting power when the MSD is overlarge, eliminating or avoiding the negative influence of the uplink transmitting power on the downlink receiving performance, improving the data transmission efficiency of the access network equipment and the terminal equipment, and reducing the energy consumption in the data transmission process as much as possible.
In one possible implementation manner, the sending, by the access network device, a power back-off instruction to the terminal device includes: when the access network equipment determines that downlink data which needs to be sent to the terminal equipment exists, the access network equipment sends a power back-off instruction to the terminal equipment; or in the process that the access network equipment sends downlink data to the terminal equipment, the access network equipment sends a power back-off instruction to the terminal equipment.
As one possible implementation, the method includes: the access network equipment receives capability information from the terminal equipment, wherein the capability information is used for indicating whether the terminal equipment has the capability of reducing uplink transmitting power when a preset condition is met.
In one possible implementation manner, the capability information includes a preset threshold when the capability information is used to indicate that the terminal device has the capability of reducing uplink transmission power when a preset condition is met.
In a third aspect, there is provided a terminal device comprising: a determining unit, configured to determine a maximum reception sensitivity backoff value MSD in an uplink transmission process in a downlink data reception process; and the adjusting unit is used for reducing the uplink transmitting power in response to the MSD being larger than or equal to a preset threshold value.
As a possible implementation manner, the terminal device further includes: a receiving unit, configured to receive a power backoff instruction from an access network device; the power backoff instruction is used for indicating the terminal equipment adopting the FDD mode to reduce uplink transmitting power when a preset condition is met, and the preset condition comprises that MSD of the terminal equipment in the uplink transmission process is greater than or equal to a preset threshold value.
As a possible implementation manner, the terminal device further includes: a sending unit, configured to send capability information to an access network device; the capability information is used for indicating whether the terminal equipment has the capability of reducing the uplink transmitting power when the preset condition is met.
As a possible implementation manner, in a case where the capability information is used to indicate that the terminal device has the capability of reducing the uplink transmission power when the preset condition is met, the capability information includes a preset threshold.
As a possible implementation, the adjusting unit is specifically configured to: and reducing the uplink transmitting power by taking the preset power adjustment value as a step length, and stopping adjusting the uplink transmitting power until the MSD in the uplink transmission process is smaller than a preset threshold value.
As a possible implementation, the adjusting unit is further configured to: after the downlink data transmission is completed, the uplink transmitting power is increased to the power value before the decrease.
In a fourth aspect, an access network device is provided, including: a generating unit configured to generate a power backoff instruction; the power backoff instruction is used for indicating the terminal equipment adopting the frequency division duplex FDD mode to reduce uplink transmitting power when a preset condition is met, and the preset condition comprises that the maximum receiving sensitivity backoff value MSD of the terminal equipment in the uplink transmission process is larger than or equal to a preset threshold value; and the sending unit is used for sending the power back-off instruction to the terminal equipment.
As a possible implementation manner, the sending unit is specifically configured to: when determining that the downlink data which needs to be sent to the terminal equipment exists, sending a power back-off instruction to the terminal equipment; or in the process of sending the downlink data to the terminal equipment, sending a power back-off instruction to the terminal equipment.
As a possible implementation manner, the access network device further includes: a receiving unit for receiving capability information from a terminal device; the capability information is used for indicating whether the terminal equipment has the capability of reducing the uplink transmitting power when the preset condition is met.
As a possible implementation manner, in a case where the capability information is used to indicate that the terminal device has the capability of reducing the uplink transmission power when the preset condition is met, the capability information includes a preset threshold.
In a fifth aspect, there is provided a terminal device, including: one or more processors; the processor is configured to execute computer program code in the memory, where the computer program code includes instructions to cause the terminal device to perform any one of the methods for adjusting uplink transmit power provided in the first aspect.
In a sixth aspect, an access network device is provided, including: a processor, a memory, and a communication interface; wherein the communication interface is used for the communication between the access network equipment and other equipment or network; the memory is configured to store one or more programs, the one or more programs including computer-executable instructions that, when executed by the access network device, cause the access network device to perform any one of the methods for adjusting uplink transmit power provided in the second aspect.
In a seventh aspect, there is provided a computer readable storage medium comprising computer instructions which, when run on a terminal device, cause the terminal device to perform any of the methods of adjusting uplink transmit power provided in the first or second aspects.
In an eighth aspect, a computer program product is provided, which is directly loadable into a memory and contains software code, and which, when loaded and executed by a computer, is capable of implementing the method for adjusting uplink transmit power according to any one of the first or second aspects.
It should be noted that the above-mentioned computer instructions may be stored in whole or in part on a computer-readable storage medium. The computer readable storage medium may be packaged together with the processor of the controller or may be packaged separately from the processor of the controller, which is not limited in the present invention.
The advantageous effects described in the third aspect to the eighth aspect of the present invention may refer to the advantageous effect analysis of the first aspect or the second aspect, and are not described here again.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.
Fig. 1 is a schematic diagram of a network architecture of a communication system according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for adjusting uplink power of a terminal according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for adjusting uplink power of a terminal according to an embodiment of the present invention;
fig. 4 is a flowchart of a method for adjusting uplink power of a terminal according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for adjusting uplink power of a terminal according to an embodiment of the present invention;
fig. 6 is a complete flowchart of a method for adjusting uplink power of a terminal according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an access network device according to an embodiment of the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments in the present invention are included in the protection scope of the present invention.
In embodiments of the invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
In embodiments of the present invention, "at least one" refers to one or more. "plurality" means two or more.
In the embodiment of the present invention, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
As described in the background art, in order to improve uplink performance of the 5G FDD network, standardization of a high-power terminal in the 5G FDD band is also being performed. Two independent channels are required for data transmission in FDD mode, one for downlink reception and the other for uplink transmission. A guard band exists between the two channels to prevent uplink transmissions from interfering with downlink reception.
Taking the provision in the 4G standard as an example, the default conventional power transmission level is: power class3, high power emission class includes: power class2 and power class 1. The maximum transmit power corresponding to power class2 is 26dbm,power class 1 and the maximum transmit power corresponding to power class 26dbm,power class 1 is 31dbm. When the terminal capability information reported by the 4G terminal records that the power transmission level configured by the 4G terminal only comprises power class3, the 4G terminal can be identified that the power transmission level is not configured (high power transmission function is not supported); and when the terminal capability information records that the power transmission level configured by the 4G terminal includes not only power class3 but also at least one of power class2 and power class 1, it can be identified that the 4G terminal is configured with a high power transmission level (supporting a high power transmission function).
Although the 5G standard differs from the 4G standard in the content of the high power transmission level, the principle of identifying whether the 5G terminal is configured with the high power transmission level is consistent with the principle of identifying whether the 4G terminal is configured with the high power transmission level, and will not be described in detail herein.
The 3GPP protocol specifies the minimum received power (receiver sensitivity, receiver Reference Sensitivity, refbens) required for the terminal to be able to perform demodulation of the downlink received signal in the FDD band, this definition being calculated for the uplink transmit power of 23dBm (power class3 or PC 3). Typically a larger transmission bandwidth would require a higher receiver sensitivity level (a more degraded refs indicator), e.g. an n1 band requires only a receiver sensitivity level of-100 dBm for data transmission at a bandwidth of 5MHz, and an up to a receiver sensitivity level of-89.6 dBm at a bandwidth of 50 MHz.
For high power terminals (transmission power 26dBm or power class 2), especially for frequency bands with a relatively close uplink and downlink duplex interval, interference from uplink transmission to downlink reception also deteriorates the receiver sensitivity index, thereby affecting the downlink reception performance of the terminal.
In the related art, the maximum sensitivity backoff (Maximum Sensitivity Degradation or MSD) is defined as the difference between the receiver sensitivity of power class2 and the receiver sensitivity of power class3 (msd= REFSENSPC2-REFSENSPC 3) under the same bandwidth in the single-band case. If the MSD is too large, this means that the terminal needs more received power to meet the normal downlink communication requirement under the same bandwidth, and that the downlink performance is seriously affected, which counteracts the uplink performance gain caused by the high transmission power to some extent.
Based on this, the embodiment of the invention provides an uplink transmitting power adjusting method, which has the following ideas: in the process of receiving downlink data by the terminal equipment adopting the frequency division duplex FDD mode, the uplink transmitting power is reduced in response to MSD being larger than or equal to a preset threshold value, so that on the premise of ensuring that high-power transmission is maintained and uplink performance is improved, negative influence on the downlink receiving process is reduced, and the downlink receiving performance is enhanced.
Fig. 1 is a schematic diagram of a network architecture of a communication system according to an embodiment of the present invention.
As shown in fig. 1, system architecture 100 may include a terminal device 110 and an access network device 120. The access network device may communicate with the terminal device 110 over the air. Multi-service transmission is supported between terminal device 110 and network device 120.
The terminal device may be a device having a wireless transceiving function. The terminal device may be of different names, such as User Equipment (UE), access device, terminal unit, terminal station, mobile station, remote terminal, mobile device, wireless communication device, terminal agent, or terminal apparatus, etc. Terminal devices may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; may also be deployed on the surface of water (e.g., a ship, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The terminal device includes a handheld device, an in-vehicle device, a wearable device, or a computing device with wireless communication capabilities. For example, the terminal device may be a mobile phone (mobile phone), a tablet computer, or a computer with a wireless transceiver function. The terminal device may also be a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, an industrial control terminal, a wireless terminal in unmanned, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city, a wireless terminal in smart home, etc. In the embodiment of the present invention, the device for implementing the function of the terminal device may be the terminal device, or may be a device capable of supporting the terminal device to implement the function, for example, a chip system or the like. In the present invention, the chip system may be formed by a chip, or may include a chip and other discrete devices.
The access network device may also be referred to as a base station. The base station may comprise various forms of base stations. For example: macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like. The method specifically comprises the following steps: an Access Point (AP) in a wireless local area (Wireless Local Area Network, WLAN), a base station (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile Communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a base station (NodeB, NB) in wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA), an Evolved Node B (eNB or eNodeB) in LTE, a relay station or access point, a next generation Node B (The Next Generation Node B, gNB) in a vehicle-mounted device, a wearable device, and a 5G network, or a base station in a future Evolved public land mobile network (Public Land Mobile Network, PLMN) network, or the like.
The invention furthermore describes various embodiments in connection with an access network device and a terminal device.
An embodiment of the present invention provides a method for adjusting uplink transmit power, as shown in fig. 2, where the method includes: step S201 to step S202.
S201, determining MSD in the uplink transmission process in the process of receiving downlink data by the terminal equipment adopting the FDD mode.
Wherein MSD is the difference between the receiver sensitivity corresponding to the first power class and the receiver sensitivity corresponding to the second power class at the target bandwidth. The transmit power of the first power level is higher than the transmit power of the second power level. Illustratively, the first power level is power level 2 and the second power level is power level 1. The target bandwidth is the bandwidth of the frequency band used for data transmission by the terminal equipment. The target bandwidth is, for example, 50MHz, 100MHz, etc., which is not limited.
As a possible implementation, the MSD during transmission is determined when the terminal device adopts the high power transmission mode (i.e. when the terminal device adopts the first power level).
S202, in response to MSD being greater than or equal to a preset threshold, the terminal equipment reduces uplink transmission power.
Alternatively, the preset threshold may be preset by the terminal device. Alternatively, the preset threshold may be determined by the terminal device's own capability information. Alternatively, the preset threshold may be determined by the access network device with reference to the data transmission situation.
Alternatively, the preset threshold may be related to the size of the bandwidth. In some examples, the preset threshold is positively correlated with the bandwidth, i.e., the larger the bandwidth, the larger the preset threshold.
For example, table 1 shows a correspondence between a bandwidth and a preset threshold on the FDD band n 3.
Table 1 correspondence between bandwidths and preset thresholds
As a possible implementation manner, when the MSD is greater than or equal to the preset threshold, the terminal device uses the preset power adjustment value as a step length to reduce the uplink transmission power, until the MSD in the uplink transmission process is less than the preset threshold, and stops adjusting the uplink transmission power.
Alternatively, the preset power adjustment value may be determined by the terminal device capability information. Alternatively, the preset power adjustment value may also be determined by the access network device. Alternatively, the preset power adjustment value may be built in the terminal device.
For example, assume that in the data transmission process of the terminal device, the uplink transmission power is 26dbm, the msd is 12dB, the preset threshold is 10dB, and the preset power adjustment value is 1dB. At this time, the MSD is greater than a preset threshold, and the terminal device reduces the uplink transmission power. The terminal equipment takes 1dB as a step length, the uplink transmitting power is reduced to 25dBm in a step mode, and the MSD is calculated to be 11dB at the moment and still larger than a preset threshold value; continuously taking 1dB as a step length, reducing the uplink transmitting power to 24dBm in a step manner, and calculating to obtain that the MSD is 10dB and still is equal to a preset threshold value; and continuously taking 1dB as a step length, reducing the uplink transmission power to 23dBm in a step manner, calculating that the MSD is 9dB, and stopping reducing the uplink transmission power when the MSD is smaller than a preset threshold value.
As a possible implementation, the terminal device may also reduce the uplink transmit power in a linear manner. The linear mode refers to that the terminal equipment takes the uplink transmitting power when the MSD is smaller than a preset threshold value as a target value, and directly reduces the uplink transmitting power to the target value.
For example, assume that in the data transmission process of the terminal device, the uplink transmission power is 26dbm, the msd is 12dB, the preset threshold is 10dB, and the preset power adjustment value is 1dB. At this time, the MSD is greater than a preset threshold, and the terminal device reduces the uplink transmission power. The terminal device calculates that the uplink transmit power is 23dBm when the MSD is 9 dB. The terminal equipment directly reduces the transmitting power to 23dBm, at the moment, MSD is calculated to be 9dbB, the MSD is smaller than a preset threshold value, and the uplink transmitting power is stopped being reduced.
For convenience of description, the embodiment of the present invention will simply refer to "in response to MSD being greater than or equal to a preset threshold, the terminal device decreases uplink transmission power" as a power backoff operation.
In some embodiments, whether the terminal device is capable of power backoff operation may be determined by the access network device. For example, in the case that the terminal device receives a power backoff instruction issued by the access network device, the terminal device is allowed to perform a power backoff operation; and under the condition that the terminal equipment does not receive the power back-off instruction issued by the access network equipment, the terminal equipment is not allowed to carry out the power back-off operation. The description of the power back-off instruction may refer to the related description in the embodiment shown in fig. 4, which is not repeated herein.
In some embodiments, whether the terminal device is capable of power backoff operation may also be determined by the terminal device itself. That is, the terminal device may determine whether to perform the power backoff operation according to its software and hardware configuration, priority of uplink and downlink transmission, and other related information.
The embodiment of the invention has at least the following beneficial effects: the terminal equipment judges whether the transmission power needs to be reduced for data transmission or not by calculating MSD. If the MSD is larger than the preset threshold, the terminal equipment reduces the uplink transmitting power, so that the problem of downlink receiving performance reduction caused by the influence of uplink transmitting is solved.
In some embodiments, based on the embodiment shown in fig. 2, as shown in fig. 3, the method further comprises the following steps after step S202:
and S203, after the downlink data transmission is completed, the terminal equipment increases the uplink transmitting power to the power value before reduction.
As a possible implementation manner, after the terminal device reduces the uplink transmission power, uplink transmission is performed according to the reduced uplink transmission power, and downlink data transmission conditions are detected in real time. If the downlink data is detected to be received, the power can be increased to the original transmitting power level.
Optionally, the terminal device may not increase the transmission power, and continue uplink transmission according to the reduced transmission power.
For example, it is assumed that in the data transmission process of the terminal device, since the MSD is greater than the preset threshold, the uplink transmission power is reduced from 26dBm to 23dBm, and at this time, the MSD is less than the preset threshold, and the terminal device performs data transmission with the transmission power of 23dBm. In the uplink data transmission process, after the downlink data is detected to be received, the terminal equipment can raise the uplink transmission power to 26dBm without considering the factors that the downlink receiving performance is negatively affected, and the uplink data transmission is continued.
It can be seen that, when the terminal device decreases the uplink transmission power due to the MSD being greater than or equal to the preset threshold, if the downlink data reception is completed in the uplink data transmission process, the uplink transmission power can be increased to the transmission power level before the decrease, so as to ensure that the performance of the uplink transmission power is maximized and improve the working efficiency of data transmission.
The embodiment of the invention also provides a method for adjusting uplink transmitting power, as shown in fig. 4, which comprises the following steps: step S301 to step S302.
S301, the access network equipment generates a power back-off instruction.
The power back-off instruction is used for indicating the terminal equipment adopting the frequency division duplex FDD mode to reduce the uplink transmitting power when the preset condition is met. The preset condition includes that the MSD of the terminal equipment in the uplink transmission process is greater than or equal to a preset threshold value.
In some embodiments, the access network device may reference the capability information of the terminal device and the MSD during transmission to determine whether to generate the power back-off instruction.
For example, when the capability information of the terminal device is used to indicate that the terminal device does not have the capability of reducing the uplink transmission power when the preset condition is met, the access network device does not generate a power back-off instruction.
For another example, when the capability information of the terminal device is used to indicate that the terminal device has the capability of reducing the uplink transmission power when the preset condition is met, the access network device may generate a power back-off instruction.
For example, in the relevant communication standard, the power back-off instruction may be named "fddpowerfullback". Of course, the power back-off instruction may have other names, which are not limited thereto.
Illustratively, in the relevant communication standard, the following description may be given to the power back-off instruction:
when the fddpowerldback cell is configured to be 1, the terminal device supporting power class2 operating in the nX1 band, the nX2 band, or the like on the FDD band decreases the transmit power PEMAX, c by 3dB. (the corresponding English description is When the IE "FddPowerFallback" is set to 1, P) EMAX,c is decreased by+3dB for a power class 2capable UE operating in FDD bands nX1,nX2…)
Alternatively, when the fddpowerldback cell is configured to be 1,power adjustment value Δp of terminal device supporting power class2 operating in nX1 band, nX2 band, etc. band on FDD band PowerClass Is 3dB. (the corresponding English description is When the IE "FddPowerFallback" is set to 1, ΔP) PowerClass ＝3dB for a power class 2capable UE operating in FDD bands nX1,nX2…)
It should be understood that nX1 and nX2 … … are examples of frequency bands to which the power back-off instruction is applied, and may be omitted according to actual situations, which is not limited thereto.
Alternatively, the power back-off instruction may be sent through RRC signaling, which is not limited. For example, the power back-off instruction may be carried in uplink configuration information (uplink config) in RRC signaling.
S302, the access network equipment sends a power back-off instruction to the terminal equipment.
As a possible implementation manner, when the access network device determines that there is downlink data that needs to be sent to the terminal device, the access network device sends a power back-off instruction to the terminal device.
As another possible implementation manner, in the process that the access network device sends downlink data to the terminal device, the access network device sends a power back-off instruction to the terminal device.
Correspondingly, the terminal equipment receives a power back-off instruction. And after the terminal equipment receives the power back-off instruction issued by the access network equipment, reducing the uplink transmitting power according to the power back-off instruction.
If the terminal equipment is limited by the capability of the radio frequency device and does not support the reduction of the uplink transmission power, the power back-off instruction sent by the access network equipment can be directly ignored, and the data transmission is continued according to the original transmission power.
It can be seen that the embodiments of the present invention bring at least the following advantages: the access network equipment determines whether to issue a power back-off instruction or not by referring to the capability information of the terminal equipment and the data transmission condition. Whether the terminal equipment needs to reduce the uplink transmitting power can be accurately judged, the efficiency of data transmission between the access network equipment and the terminal equipment is improved, and the power loss in the data transmission process is reduced.
In some embodiments, an embodiment of the present invention provides a method for adjusting uplink transmit power, as shown in fig. 5, including: step S401 to step S402.
S401, the terminal equipment generates capability information.
The capability information is used for indicating whether the terminal equipment has the capability of reducing the uplink transmitting power when the preset condition is met. The preset condition includes that a maximum receiving sensitivity back-off value MSD of the terminal equipment in the uplink transmission process is larger than or equal to a preset threshold value.
Optionally, in the case where the capability information is used to indicate that the terminal device has the capability of reducing uplink transmission power when a preset condition is met, the capability information includes a preset threshold.
In some embodiments, the capability information includes a first cell, where the capability information is used to indicate that the terminal device has a capability of reducing uplink transmit power when a preset condition is met, where the value of the first cell is a first value; and the capability information is used for indicating that the terminal equipment does not have the capability of reducing the uplink transmitting power when the preset condition is met under the condition that the value of the first cell is the second value.
S402, the terminal equipment sends capability information to the access network equipment; correspondingly, the access network device receives the capability information from the terminal device.
In some embodiments, as shown in fig. 6, the implementation of the present invention provides an uplink transmit power adjustment method, which includes the following steps:
s501, the terminal equipment reports the capability information to the access network equipment.
S502, the terminal equipment performs uplink transmission according to preset transmitting power.
S503, in the transmission process, the access network equipment calculates whether the MSD exceeds a preset threshold value.
If the MSD is smaller than the preset threshold during the data transmission, S504 is performed.
If MSD is greater than or equal to the preset threshold during data transmission, S505 is performed.
S504, the terminal equipment performs uplink data transmission according to the preset transmitting power.
In the data transmission process, the MSD is smaller than a preset threshold, uplink data transmission does not interfere with downlink data reception, the downlink data reception performance is not negatively affected, the uplink transmission power is not reduced, and the uplink data transmission is continuously carried out according to the preset transmission power.
S505, whether the access network device transmits downlink data to the terminal device.
If the access network device does not perform downlink data transmission on the terminal device, S506 is performed.
If the access network device is ready to transmit downlink data to or from the terminal device, S507 is performed.
S506, the terminal equipment performs uplink data transmission according to the preset transmitting power.
When the access network device does not perform downlink data transmission to the terminal device, the factor of downlink data reception is not considered. I.e. MSD is greater than the preset threshold, without negative impact. Therefore, it is unnecessary to reduce the uplink transmission power.
S507, the access network equipment issues a power back-off instruction.
It should be noted that, when the access network device prepares to transmit downlink data to or is transmitting downlink data to the terminal device, when the MSD is greater than or equal to a preset threshold, uplink data transmission negatively affects downlink data reception, so that downlink data reception performance is reduced, uplink transmission power of the terminal device needs to be reduced, and the access network device issues a power backoff instruction for instructing the terminal device to reduce transmission power.
And S508, the terminal equipment reduces the transmitting power according to the power back-off instruction and recalculates the MSD.
It should be noted that, the terminal device reduces the uplink transmitting power in a step form according to the power back-off instruction issued by the access network device, and recalculates the MSD in the data transmission process at this time.
S509, after the uplink transmission power is reduced, whether the MSD exceeds a preset threshold.
If the MSD is still greater than or equal to the preset threshold after the uplink transmission power is reduced, S510 is performed.
If the MSD is less than the preset threshold after the uplink transmission power is reduced, S511 is performed.
S510, the terminal equipment continuously reduces the transmitting power and recalculates the MSD.
It should be noted that, when the calculated MSD is still greater than or greater than the preset threshold after the terminal device decreases the uplink transmission power, the transmission power is continuously decreased, the MSD in the data transmission process is recalculated, and then S509 is executed again.
S511, the terminal equipment performs uplink data transmission according to the reduced transmitting power.
S512, the terminal equipment judges whether the downlink reception stops during the uplink transmission.
If the terminal device performs data transmission according to the reduced transmission power, the downlink data reception is not stopped, and S511 is performed.
If the terminal device stops the downlink data reception when transmitting data according to the reduced transmission power, S513 is executed.
S513, the terminal equipment increases the transmitting power to the preset transmitting power to transmit uplink data.
When the uplink data transmission of the terminal equipment is completed or stopped, the uplink transmitting power of the terminal equipment can be increased to the power before the reduction without considering the factors of the downlink data reception, so that the uplink transmitting power performance is ensured.
Optionally, the terminal may not need to operate to raise the uplink transmission power, and continue to transmit uplink data according to the reduced transmission power.
The foregoing description of the solution provided by the embodiments of the present invention has been mainly presented in terms of a method. To achieve the above functions, it includes corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The embodiment of the invention can divide the functional modules of the communication device according to the method example, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. Optionally, the division of the modules in the embodiment of the present invention is schematic, which is merely a logic function division, and other division manners may be implemented in practice.
Fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention, and as shown in fig. 7, a terminal device 60 includes: a determining unit 601, an adjusting unit 602, a receiving unit 603, and a transmitting unit 604.
The determining unit 601 is configured to determine a maximum receiving sensitivity backoff value MSD in an uplink transmission process in a downlink data receiving process; the adjusting unit 602 reduces the uplink transmission power in response to the MSD being greater than or equal to a preset threshold.
As a possible implementation manner, the method further includes: a receiving unit 603, configured to receive a power back-off instruction from an access network device; the power backoff instruction is used for indicating the terminal equipment adopting the FDD mode to reduce uplink transmitting power when a preset condition is met, and the preset condition comprises that MSD of the terminal equipment in the uplink transmission process is greater than or equal to a preset threshold value.
As a possible implementation manner, the method further includes: a sending unit 604, configured to send capability information to an access network device; the capability information is used for indicating that the terminal equipment has the capability of reducing the uplink transmitting power when the preset condition is met.
As one possible implementation, the capability information includes a preset threshold.
As a possible implementation manner, the adjusting unit 602 is specifically configured to: and reducing the uplink transmitting power by taking the preset power adjustment value as a step length, and stopping adjusting the uplink transmitting power until the MSD in the uplink transmission process is smaller than a preset threshold value.
As a possible implementation, the adjusting unit 602 is further configured to: after the downlink data transmission is completed, the uplink transmitting power is increased to the power value before the decrease.
Fig. 8 is a schematic structural diagram of an access network device according to an embodiment of the present invention, and as shown in fig. 8, an access network device 70 includes: generating unit 701, transmitting unit 702, and receiving unit 703.
Wherein, the generating unit 701 is configured to generate a power back-off instruction; the power backoff instruction is used for indicating the terminal equipment adopting the frequency division duplex FDD mode to reduce uplink transmitting power when a preset condition is met, and the preset condition comprises that the maximum receiving sensitivity backoff value MSD of the terminal equipment in the uplink transmission process is larger than or equal to a preset threshold value; and the sending unit is used for sending the power back-off instruction to the terminal equipment.
As a possible implementation manner, the sending unit 702 is specifically configured to: when determining that the downlink data which needs to be sent to the terminal equipment exists, sending a power back-off instruction to the terminal equipment; or,
and in the process of sending the downlink data to the terminal equipment, sending a power back-off instruction to the terminal equipment.
As a possible implementation manner, the method further includes: a receiving unit 703 for receiving capability information from the terminal device; the capability information is used for indicating that the terminal equipment has the capability of reducing the uplink transmitting power when the preset condition is met.
As a possible implementation, the capability information includes a preset threshold.
Embodiments of the present invention also provide a computer-readable storage medium including computer-executable instructions that, when executed on a computer, cause the computer to perform a method as provided in the above embodiments.
The embodiment of the present invention also provides a computer program product, which can be directly loaded into a memory and contains software codes, and the computer program product can implement the method provided by the above embodiment after being loaded and executed by a computer.
Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the present invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the present invention is not limited thereto, but any changes or substitutions within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (13)

1. A method for adjusting uplink transmit power, the method comprising:
in the process of receiving downlink data by a terminal device adopting a frequency division duplex FDD mode, the terminal device determines a maximum receiving sensitivity back-off value MSD in the uplink transmission process;
and the terminal equipment reduces the uplink transmitting power in response to the MSD being greater than or equal to a preset threshold.
2. The method according to claim 1, wherein the method further comprises:
the terminal equipment receives a power back-off instruction from the access network equipment, wherein the power back-off instruction is used for indicating the terminal equipment adopting the FDD mode to reduce uplink transmitting power when a preset condition is met, and the preset condition comprises that MSD of the terminal equipment in the uplink transmission process is larger than or equal to a preset threshold value.
3. The method according to claim 2, wherein the method further comprises:
the terminal equipment sends capability information to access network equipment, wherein the capability information is used for indicating whether the terminal equipment has the capability of reducing uplink transmitting power when the preset condition is met.
4. A method according to claim 3, wherein the capability information comprises the preset threshold in case the capability information is used to indicate that the terminal device has the capability to reduce uplink transmit power when the preset condition is met.
5. The method according to any of claims 1 to 4, wherein the terminal device reduces uplink transmit power, comprising:
and the terminal equipment takes the preset power adjustment value as a step length to reduce the uplink transmission power, and stops adjusting the uplink transmission power when the MSD in the uplink transmission process is smaller than a preset threshold value.
6. The method according to any of claims 1 to 4, characterized in that after the terminal device reduces the uplink transmit power, the method further comprises:
after the downlink data transmission is completed, the terminal equipment increases the uplink transmitting power to a power value before reduction.
7. A method for adjusting uplink transmit power, the method comprising:
the access network equipment generates a power back-off instruction, wherein the power back-off instruction is used for indicating the terminal equipment adopting a Frequency Division Duplex (FDD) mode to reduce uplink transmitting power when a preset condition is met, and the preset condition comprises that a maximum receiving sensitivity back-off value (MSD) of the terminal equipment in an uplink transmission process is larger than or equal to a preset threshold value;
and the access network equipment sends the power back-off instruction to the terminal equipment.
8. The method of claim 7, wherein the access network device sending the power backoff instruction to the terminal device comprises:
when the access network equipment determines that the access network equipment has downlink data which needs to be sent to the terminal equipment, the access network equipment sends the power back-off instruction to the terminal equipment; or,
and in the process that the access network equipment sends downlink data to the terminal equipment, the access network equipment sends the power back-off instruction to the terminal equipment.
9. The method according to claim 7 or 8, characterized in that the method further comprises:
the access network equipment receives capability information from the terminal equipment, wherein the capability information is used for indicating whether the terminal equipment has the capability of reducing uplink transmitting power when the preset condition is met.
10. The method according to claim 9, wherein the capability information comprises the preset threshold in case the capability information is used to indicate that the terminal device has the capability to reduce uplink transmit power when the preset condition is met.
11. A terminal device, comprising:
a processor; the processor is configured to read computer-executable instructions in the memory and execute the computer-executable instructions to cause the terminal device to perform the method according to any of claims 1-6.
12. An access network device, comprising:
a processor; the processor is configured to read computer-executable instructions in the memory and execute the computer-executable instructions to cause the device that accessed me to perform the method of any of claims 7-10.
13. A computer readable storage medium having instructions stored therein, wherein when the instructions are executed by a computer, the computer performs the method of adjusting uplink transmit power as claimed in any one of claims 1-10.
CN202211095715.0A 2022-09-06 2022-09-06 Uplink transmitting power adjusting method and device Pending CN117676822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211095715.0A CN117676822A (en) 2022-09-06 2022-09-06 Uplink transmitting power adjusting method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211095715.0A CN117676822A (en) 2022-09-06 2022-09-06 Uplink transmitting power adjusting method and device

Publications (1)

Publication Number Publication Date
CN117676822A true CN117676822A (en) 2024-03-08

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Application Number Title Priority Date Filing Date
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CN (1) CN117676822A (en)

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