CN113453264A - Method for detecting terminal emission behavior and network equipment - Google Patents

Method for detecting terminal emission behavior and network equipment Download PDF

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Publication number
CN113453264A
CN113453264A CN202010212485.6A CN202010212485A CN113453264A CN 113453264 A CN113453264 A CN 113453264A CN 202010212485 A CN202010212485 A CN 202010212485A CN 113453264 A CN113453264 A CN 113453264A
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terminal
antenna
channel
uplink
antennas
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CN202010212485.6A
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CN113453264B (en
Inventor
塔玛拉卡·拉盖施
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • 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
    • H04W52/146—Uplink power control
    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
    • 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)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a method for detecting terminal emission behaviors and network equipment, wherein the method comprises the following steps: measuring uplink signals or channels sent by N antennas of a terminal to obtain a measurement result; judging whether a first event occurs in the terminal according to the measurement result; wherein the first event comprises: and the terminal reduces the transmitting power of the M antennas. In the embodiment of the invention, the network equipment can judge whether the terminal reduces the transmitting power of the antenna or not through the measurement result of the uplink signal or the channel, so that the network equipment can know that the antenna of the terminal is reduced by the transmitting power because the antenna is close to a human body or is shielded by hands even if the terminal does not actively report an MPE event or an SAR event.

Description

Method for detecting terminal emission behavior and network equipment
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method for detecting terminal emission behaviors and network equipment.
Background
When a transmitting antenna of a terminal is close to a human body or a beam transmitted by the antenna faces the human body, the terminal should meet requirements of a Maximum Exposure allowed (MPE) and an electromagnetic Absorption Rate (SAR), that is, certain requirements on the transmitting power and/or the continuous transmitting time of the terminal antenna.
The terminal may detect whether a certain antenna is close to a human body or blocked by a hand using some sensors. The multiple antennas of the terminal may be placed in different locations so that it is possible that one antenna is occluded by the hand while the other antennas or antenna panels are not. The general terminal can automatically reduce the transmitting power when judging that the transmitting antenna is close to the human body through various sensors or other modes, and the reduction amplitude can be larger or even larger than 10 dB.
At present, a terminal judges whether an antenna is close to a human body or is shielded by a hand, and then the terminal reports an MPE event or an SAR event to a base station, wherein the MPE event or the SAR event refers to that the terminal reduces the transmitting power of the antenna in order to meet the MPE or SAR requirement. If the terminal does not actively report the MPE event or the SAR event, the base station cannot know that the transmitting power of the antenna of the terminal is reduced due to the fact that the antenna is close to a human body or is shielded by hands.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a method and a network device for detecting a terminal transmission behavior, so as to solve the problem that a network side cannot know that an antenna of a terminal is reduced in transmission power due to being close to a human body or being shielded by a hand, and the like, when the terminal does not actively report an MPE event or an SAR event.
In a first aspect, an embodiment of the present invention provides a method for detecting a terminal transmission behavior, which is applied to a network device, and includes:
measuring uplink signals or channels sent by N antennas of a terminal to obtain a measurement result;
judging whether a first event occurs in the terminal according to the measurement result;
wherein the first event comprises: the terminal reduces the transmitting power of M antennas;
n, M are positive integers greater than or equal to 1, and M is less than or equal to N.
In a second aspect, an embodiment of the present invention further provides a network device, including:
the measuring module is used for measuring uplink signals or channels sent by N antennae of the terminal to obtain a measuring result;
the judging module is used for judging whether a first event occurs in the terminal according to the measuring result;
wherein the first event comprises: the terminal reduces the transmitting power of M antennas;
n, M are positive integers greater than or equal to 1, and M is less than or equal to N.
In a third aspect, an embodiment of the present invention further provides a communication device, including: a processor, a memory and a program stored on the memory and being executable on the processor, the program, when executed by the processor, implementing the steps of the method of detecting a terminal transmission behavior as described in the first aspect.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for detecting terminal transmission behavior according to the first aspect.
In the embodiment of the invention, the network equipment can judge whether the terminal reduces the transmitting power of the antenna or not through the measurement result of the uplink signal or the channel, so that the network equipment can know that the antenna of the terminal is reduced by the transmitting power because the antenna is close to a human body or is shielded by hands even if the terminal does not actively report an MPE event or an SAR event.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings.
In the drawings:
FIG. 1 is a block diagram of a wireless communication system according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for detecting a terminal transmission behavior according to an embodiment of the present invention;
FIG. 3 is a diagram of a network device according to an embodiment of the invention;
fig. 4 is a second schematic diagram of a network device according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The techniques described herein are not limited to Long Time Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems.
The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies.
Embodiments of the present invention are described below with reference to the accompanying drawings. The method and the device for switching the search space set group provided by the embodiment of the invention can be applied to a wireless communication system. Referring to fig. 1, an architecture diagram of a wireless communication system according to an embodiment of the present invention is shown. As shown in fig. 1, the wireless communication system may include: network device 11 and terminal 12, terminal 12 may be referred to as UE12, and terminal 12 may communicate (transmit signaling or transmit data) with network device 11. In practical applications, the connections between the above devices may be wireless connections, and fig. 1 illustrates the connections between the devices by solid lines for convenience and convenience in visual representation.
The network device 11 provided in the embodiment of the present invention may be a base station, which may be a commonly used base station, an evolved node base station (eNB), or a network device in a 5G system (e.g., a next generation base station (gNB) or a Transmission and Reception Point (TRP)).
The terminal 12 provided in the embodiment of the present invention may be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook or a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device.
Referring to fig. 2, an embodiment of the present invention provides a method for detecting a terminal transmission behavior, where an execution subject of the method may be a network device, and the method includes: step 201 and step 202.
Step 201: measuring uplink signals or channels sent by N antennas of a terminal to obtain a measurement result;
the antenna may be any one of: a physical antenna, an antenna port, and an antenna panel. Of course, not limited thereto.
It can be understood that the N antennas may be all antennas on the terminal, or may be partial antennas on the terminal, for example, the terminal is configured with X antennas, X is greater than or equal to N, and the terminal may transmit uplink signals or channels through N antennas. Illustratively, the terminal configures a first antenna, a second antenna and a third antenna, and the network device may measure uplink signals or channels transmitted by the first antenna and the second antenna.
Optionally, the uplink Signal may be Y or Y groups of uplink Sounding Reference Signals (SRS) configured by the network device for the terminal or other uplink signals, where Y is a positive integer greater than or equal to 1, and Y is equal to or different from X. For example, the network device sends configuration information to the terminal, where the configuration information is used for the terminal to configure Y or Y groups of uplink signals or channels.
For example, the terminal uses N antennas to transmit Y or Y groups of uplink SRS or other uplink signals, and one antenna transmits at least one or one group of uplink sounding reference signals or other uplink signals, where N is less than or equal to Y.
A New Radio (NR) system supports a terminal to transmit an SRS sounding pilot, and configuring some relevant parameters for the terminal by a network side includes: time frequency resource position, periodic or non-periodic or semi-continuous transmission, etc. The network side configures the SRS sounding pilot for the terminal with different purposes, such as obtaining Uplink Channel information (for Physical Uplink Shared Channel, PUSCH) scheduling), obtaining downlink Channel information (obtained based on Channel reciprocity), and managing Uplink beams.
The types of measurement results include one or more of: reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Received Signal Strength Indicator (RSSI), and Signal to Interference Noise Ratio (SINR).
Optionally, before step 201, the network device receives at least one or a group of uplink signals or channels transmitted by one antenna of the N antennas of the terminal.
Step 202: judging whether a first event occurs in the terminal according to the measurement result;
wherein the first event comprises: the terminal reduces the transmitting power of M antennas; n, M are positive integers greater than or equal to 1, and M is less than or equal to N.
It can be understood that the first event is used to indicate that the M antennas of the terminal are reduced in transmission power due to being close to the human body or the transmitted beam facing the human body or being blocked by the hand.
Further, the terminal reducing the transmission power of the M antennas includes: and the terminal reduces the transmitting power of the M antennas according to the exposure of the electromagnetic waves.
In the embodiment of the present invention, since the M antennas are close to the human body or the emitted beams face the human body or are blocked by the hand, the emitted power is reduced, so that the network device can detect, according to the measurement result, that the signal strength of the uplink signals or channels emitted by the M antennas is lower than the signal strength of the uplink signals or channels emitted by other antennas, that is, the M antennas refer to antennas having a corresponding low signal strength.
Optionally, the measurement result may include a number or other identifier of the antenna, so that the network device may determine which antenna or antennas are reduced in transmission power due to the exposure to the electromagnetic wave according to the number or other identifier of the antenna in the measurement result.
In the embodiment of the present invention, the network device may obtain a channel statistical characteristic (such as a long-term fading characteristic) of the uplink signal or the channel according to the measurement result, or may also obtain a power control mechanism of the terminal according to the measurement result, and then determine whether the terminal has the first event according to the channel statistical characteristic or the power control mechanism of the terminal.
The power control mechanism may also be referred to as a power control mode, and for example, the power control mechanism may include: in the embodiment of the present invention, the network device may instruct, through the power control command, the network device to propose a power control mechanism for the terminal to use, so that the terminal may determine, based on the power control mechanism instructed by the network device, whether the transmission power of the antenna indicated by the network device needs to be increased or whether the transmission power value that the antenna indicated by the network device should use should be increased.
The network device can also obtain the power control mechanism actually used by the terminal through the measurement result, so that the network device can determine whether the transmitting power of the terminal antenna is increased or not or the actual transmitting power value of the terminal antenna according to the power control mechanism actually used by the terminal.
It is to be understood that, in the embodiment of the present invention, specific contents of the power control mechanism are not limited.
In some embodiments, if the terminal has the first event, the terminal is scheduled to transmit through a first Uplink Channel, where the first Uplink Channel is an Uplink Channel (e.g., a Physical Uplink Shared Channel (PUSCH)) corresponding to an antenna other than the M antennas.
For example, the terminal is configured with a first antenna and a second antenna, where the first antenna is close to a human body or a beam emitted by the first antenna faces the human body or is blocked by a hand, and after the network device measures uplink signals or channels sent by the first antenna and the second antenna, it is determined that the terminal has reduced the emission power of the first antenna according to the exposure of the electromagnetic waves, and at this time, the network device may schedule the terminal to transmit through an uplink channel corresponding to the second antenna. That is, when the terminal has the first event and the network device schedules the uplink channel, it may avoid scheduling the antenna with low corresponding signal strength.
In other embodiments, if the terminal has the first event, the terminal is notified to stop the periodic or semi-persistent transmission on the second uplink channel; the second uplink channel is an uplink channel corresponding to the M antennas.
For example, the terminal is configured with a first antenna and a second antenna, where the first antenna is close to a human body or a beam emitted by the first antenna faces the human body or is blocked by a hand, and after the network device measures uplink signals or channels transmitted by the first antenna and the second antenna, the network device determines that the terminal has reduced the emission power of the first antenna according to the exposure of the electromagnetic wave, and at this time, the network device may notify the terminal to stop periodic or semi-persistent transmission on the uplink channel corresponding to the second antenna.
In other embodiments, the duration of transmission for the M antennas of the terminal is scheduled to be shortened if the first event occurs at the terminal.
For example, the terminal is configured with a first antenna and a second antenna, where the first antenna is close to a human body or a beam emitted by the first antenna faces the human body or is blocked by a hand, and after the network device measures uplink signals or channels transmitted by the first antenna and the second antenna, the network device determines that the terminal has reduced the emission power of the first antenna according to the exposure of electromagnetic waves, and at this time, the network device shortens the continuous emission time of the scheduling terminal at the second antenna.
There may be a variety of terminal antenna configurations, with multiple antennas being possible for a terminal at low frequencies (e.g., 3GHz) and multiple antenna panels being possible for a terminal at high frequencies (e.g., 28 GHz). The uplink signals transmitted by the multiple antennas or multiple antenna panels of the terminal may include SRS, the base station may measure the uplink channel characteristics of the uplink channel through the received uplink signals, and the uplink channel characteristics of the uplink channel measured when the multiple antennas or multiple antenna panels transmit the uplink signals are generally the same, but the uplink channel characteristics in a short period may be different. Such as: the terminal 2 antennas respectively transmit the SRS, the base station respectively measures the SRS transmitted by the terminal 2 antennas, and the long-term (statistical significance) signal fluctuation of the 2 signals measured by the base station is consistent, but the short-term signal fluctuation may be completely different.
The uplink channel characteristics are used to indicate the transmission performance of the uplink channel, for example: (average) received power, (average) received quality, (average) received signal strength, etc.
In the embodiment of the invention, the network equipment can judge whether the terminal reduces the transmitting power of the antenna because the antenna is close to the human body or the beam transmitted by the antenna faces the human body or the antenna is shielded by a hand according to the uplink channel characteristic.
It can be understood that, under normal conditions, the network device measures the uplink signal or channel sent by the terminal through different antennas, and then compares the measurement results of the different antennas, and finds that the difference between the measurement results of the different antennas is not large, at this time, the network device may determine that the first event does not occur at the terminal.
If one or more antennas are close to the human body or the transmitted beams face the human body or are blocked by hands, so that the terminal reduces the transmission power of the antennas, when the network equipment compares the measurement results of different antennas, the difference of the measurement results of different antennas is found to be large, at the moment, the network equipment can determine that the one or more antennas are reduced by the transmission power, and then the terminal can be judged to have a first event.
For example, the N antennas configured for the terminal at least include: the network equipment measures an uplink signal or a channel sent by the first antenna to obtain a first measured value (such as signal strength), and measures an uplink signal or a channel sent by the second antenna to obtain a second measured value (such as signal strength), and compares the first measured value with the second measured value; if the difference value of the first measurement value and the second measurement value is larger than a first threshold value, judging that the first event occurs in the terminal; the first event is that the terminal reduces the transmitting power of the second antenna according to the exposure of electromagnetic waves.
It is to be understood that the first threshold is not particularly limited in the embodiment of the present invention.
In the embodiment of the present invention, the network device may determine, through the uplink channel characteristic, whether the terminal reduces the transmission power of the antenna because the antenna is close to the human body or a beam transmitted by the antenna faces the human body or the antenna is blocked by a hand, where the uplink channel characteristic may be obtained by comparing average measured values of uplink signals or channels of the same antenna in different time periods.
For example, the N antennas configured for the terminal at least include: the network equipment measures the average measured value of the uplink signal or the channel sent by the first antenna in a first time period to obtain a first measured value (such as signal strength), the network equipment measures the average measured value of the uplink signal or the channel sent by the second antenna in a second time period to obtain a second measured value (such as signal strength), and the first measured value and the second measured value are compared; if the first measurement value is smaller than the second measurement value, judging that the first event occurs in the terminal; the second time period is a time period before the first time period, and the first event is that the terminal reduces the transmission power of the first antenna according to the exposure of electromagnetic waves.
In the embodiment of the present invention, the network device may determine, through the uplink channel characteristic, whether the terminal reduces the transmission power of the antenna because the antenna is close to the human body or a beam transmitted by the antenna faces the human body or the antenna is blocked by a hand, where the uplink channel characteristic may be obtained by comparing an average measurement value of an uplink signal or a channel of the antenna in a preset time period with a preset threshold.
For example, the N antennas configured for the terminal at least include: the network equipment measures an average measured value of an uplink signal or a channel sent by the first antenna in a preset time period to obtain a first measured value (such as signal strength), and compares the first measured value with a second threshold value; if the first measurement value is smaller than the second threshold value, judging that a first event occurs in the terminal; the first event is that the terminal reduces the transmitting power of the first antenna according to the exposure of electromagnetic waves.
It is to be understood that the second threshold is not particularly limited in the embodiment of the present invention.
In general, the network device may perform power control on uplink signals or channels sent by N antennas, for example, the network device instructs N antennas to increase transmission power, and the terminal increases the transmission power of the N antennas correspondingly, for example, the network device instructs N antennas to decrease the transmission power, and the terminal decreases the transmission power of the N antennas correspondingly.
Optionally, a power control command is sent to a terminal, where the power control command indicates a power control mechanism used by the terminal to send an uplink signal or a channel on the first antenna; judging whether the terminal sends an uplink signal or a channel on the first antenna according to the power control command according to the measurement result; if the terminal does not transmit an uplink signal or a channel on the first antenna according to the power control command, determining that the first event occurs on the terminal; wherein the first event is that the terminal reduces the transmission power of the first antenna.
For example, the network device sends a power control command to the terminal, for example, sends a plurality of power control commands to the terminal within a preset time period, where the power control commands instruct the terminal to send a power control mechanism used by an uplink signal or a channel on the first antenna; the power control command may instruct the terminal to transmit the transmission power value of the uplink signal or channel on the first antenna, or may also instruct the terminal to increase the transmission power of the uplink signal or channel transmitted by the first antenna.
Then, the network device may determine power information according to the measurement result, where the power information indicates a power control mechanism actually used by the terminal to send an uplink signal or channel on the first antenna; the power information may indicate an actual transmission power value of the terminal for transmitting the uplink signal or the channel on the first antenna, or may also indicate that the actual transmission power of the terminal for transmitting the uplink signal or the channel on the first antenna remains unchanged or is reduced.
Then, the network equipment judges whether the terminal sends an uplink signal or a channel on the first antenna according to the power control command or not according to the power information; and if the terminal does not send an uplink signal or a channel on the first antenna according to the power control command, determining that the terminal has the first event, wherein the first event is that the terminal reduces the transmitting power of the first antenna according to the electromagnetic wave exposure.
For another example, the network device sends a power control command to the terminal, for example, sends a plurality of power control commands to the terminal within a preset time period, where the power control commands instruct the terminal to send a power control mechanism used by an uplink signal or a channel on the first antenna; the power control command may instruct the terminal to transmit the transmission power value of the uplink signal or channel on the first antenna, or may also instruct the terminal to increase the transmission power of the uplink signal or channel transmitted by the first antenna.
Further, the network device may determine a received signal strength variation according to the measurement result, and the network device determines whether the terminal transmits an uplink signal or a channel on the first antenna according to the power control command according to the received signal strength variation; and if the terminal does not send an uplink signal or a channel on the first antenna according to the power control command, that is, the network device detects that the strength of the received signal is not changed, determining that the terminal has the first event, wherein the first event is that the terminal reduces the transmission power of the first antenna according to the electromagnetic wave exposure. At this time, the received signal strength of the uplink signal or channel transmitted by the first antenna received by the network device is lower than the received signal strength of the uplink signal or channel transmitted by the other antenna.
The variation of the received signal strength is used to indicate whether the received signal strength increases or decreases.
Illustratively, if the network device performs power control on one or more uplink signals or channels, and instructs the terminal to increase the power, but the terminal does not increase the transmission power after X consecutive instructions, the strength of the received signal of the network device receiving the corresponding uplink signal or channel is not changed, at this time, the network device may consider that the transmission antenna with low corresponding signal strength is shielded by a hand or is close to a human body, and the terminal automatically decreases the transmission power of the antenna, for example, X is a positive integer greater than 1.
Optionally, the network device may schedule the uplink data channel with reference to a case of performing power control on other uplink signals or channels, for example, the network device performs power control on multiple uplink signals or channels, the terminal performs power control on some uplink signals or channels according to a power control command sent by the network device, while the other uplink signals or channels do not execute the power control command, the network device may determine through corresponding uplink measurement, and the network device may schedule the uplink data channel according to an execution case of the terminal on the power control command.
Illustratively, the network device configures two uplink signals (SRS1, SRS2), the network device respectively performs power control on SRS1 and SRS2, and if the terminal performs normal power control on SRS1, such as the network device commands to increase the transmission power, the terminal increases the transmission power and the base station can detect; and the terminal may not perform properly for SRS2 power control, such as the network device commanding the boosted transmit power terminal to not perform. The network device may also schedule the uplink data channel with reference to the power control behavior of the terminal for the SRS 1.
In the embodiment of the invention, the network equipment can judge whether the terminal reduces the transmitting power of the antenna according to the exposure of the electromagnetic wave through the measurement result of the uplink signal or the channel, so that the network equipment can know that the transmitting power of the antenna of the terminal is reduced because the antenna is close to a human body or is shielded by hands even if the terminal does not actively report an MPE event or an SAR event.
The following describes an implementation manner of the present invention with reference to the first embodiment and the second embodiment, in which a network device is taken as a base station, an antenna is taken as an antenna panel, an uplink signal is SRS, and a first event is an MPE event.
The first embodiment is as follows: the base station judges whether the terminal reduces the transmitting power due to the MPE event or not by measuring the uplink channel characteristics.
For example, the terminal includes at least: antenna panel 1 and antenna panel 2, where antenna panel 1 is at the top of the terminal and antenna panel 2 is at the bottom of the terminal.
The base station configures two SRSs, i.e., SRS1 and SRS2, for the terminal, and the terminal transmits SRS1 using antenna panel 1 and SRS2 using antenna panel 2. The base station measures the SRS1 and the SRS2 sent by the terminal, and obtains uplink channel characteristics, such as the average received power P1 of the SRS1 and the average received power P2 of the SRS2, respectively.
If P1-P2 > Q, and Q is a preset threshold, the base station determines that an MPE event occurs in the antenna panel 2, that is, when the antenna panel 2 for the terminal sends SRS2, the antenna panel 2 faces the human body or is shielded by hands due to being close to the human body or the emitted wave beams, and the terminal reduces the emission power of the antenna panel 2;
if P2-P1 > Q, the base station judges that MPE event occurs in the antenna panel 1, when the terminal uses the antenna panel 1 to transmit SRS1, the antenna panel 1 faces the human body or is shielded by hands due to the fact that the antenna panel 1 is close to the human body or the transmitted wave beam, and the terminal reduces the transmitting power of the antenna panel 1.
Example two: the base station judges whether the terminal reduces the transmitting power due to the MPE event or not through a power control mechanism.
For example, the terminal includes at least: antenna panel 1 and antenna panel 2, where antenna panel 1 is at the top of the terminal and antenna panel 2 is at the bottom of the terminal.
The base station allocates two SRS resources, i.e., SRS1 and SRS2, to the terminal, and the terminal transmits SRS1 using antenna panel 1 and transmits SRS2 using antenna panel 2. The base station performs power control on the SRS1 and the SRS2, respectively.
If the quality of the received signal of the SRS1 received by the base station is poor, the base station may instruct the terminal to raise the transmission power of the SRS1, for example, the base station transmits Z consecutive times (Z is a positive integer greater than 1) within a period of time to instruct the terminal to raise the transmission power.
The base station detects the received power of the SRS1 by Z times, if the base station judges that the terminal does not improve the transmission power of the SRS 1. In this case, when the base station determines that an MPE event has occurred in the antenna panel 1 and the terminal transmits the SRS1 from the antenna panel 1, the terminal lowers the transmission power of the antenna panel 1.
In the embodiment of the invention, the network equipment can judge whether the terminal reduces the transmitting power of the antenna according to the exposure of the electromagnetic wave through the measurement result of the uplink signal or the channel, so that even if the terminal does not report the MPE event or the SAR event actively, the network equipment can also reduce the transmitting power of the antenna known by the terminal because the antenna is close to a human body or is shielded by hands.
Referring to fig. 3, an embodiment of the present invention further provides a network device, where the network device 300 includes:
the measurement module 301 is configured to measure uplink signals or channels sent by N antennas of the terminal to obtain measurement results;
a judging module 302, configured to judge whether a first event occurs in the terminal according to the measurement result;
wherein the first event comprises: the terminal reduces the transmitting power of M antennas;
n, M are positive integers greater than or equal to 1, and M is less than or equal to N.
In some embodiments, the terminal reducing the transmit power of the M antennas comprises: and the terminal reduces the transmitting power of the M antennas according to the exposure of the electromagnetic waves.
In some embodiments, the network device 300 further comprises:
a processing module, configured to schedule the terminal to perform transmission through a first uplink channel if the terminal has the first event, or notify the terminal to stop periodic or semi-persistent transmission on a second uplink channel, or shorten a persistent transmission time of the M antennas of the terminal;
the first uplink channel is an uplink channel corresponding to other antennas except the M antennas;
the second uplink channel is an uplink channel corresponding to the M antennas.
In some embodiments, the determining module 302 is further configured to:
comparing the first measurement value and the second measurement value;
if the difference value of the first measurement value and the second measurement value is larger than a first threshold value, judging that the first event occurs in the terminal;
wherein the first measurement value comprises: a measurement of an uplink signal or channel transmitted by a first antenna; the second measurement value includes: a measurement value of an uplink signal or channel transmitted by the second antenna; the first event is that the terminal reduces the transmission power of the second antenna;
alternatively, the first and second electrodes may be,
comparing the first measurement value and the second measurement value;
if the first measurement value is smaller than the second measurement value, judging that the first event occurs in the terminal;
wherein the first measurement value comprises: the average measurement value of the uplink signal or the channel transmitted by the first antenna in a first time period; the second measurement value includes: an average measurement value of an uplink signal or a channel sent by the first antenna in a second time period, where the second time period is a time period before the first time period, and the first event is that the terminal reduces the transmission power of the first antenna;
alternatively, the first and second electrodes may be,
comparing the first measurement value to a second threshold value;
if the first measured value is smaller than the second threshold value, judging that a first event occurs in the terminal;
wherein the first measurement value comprises: the method comprises the steps that an average measured value of an uplink signal or a channel sent by a first antenna in a preset time period is obtained, and the first event is that the terminal reduces the transmitting power of the first antenna.
In some embodiments, the network device 300 further comprises:
a first sending module, configured to send a power control command to the terminal, where the power control command indicates a power control mechanism used by the terminal to send an uplink signal or a channel on the first antenna;
accordingly, the determining module 302 is further configured to:
according to the measurement result, judging whether the terminal sends an uplink signal or a channel on the first antenna according to the power control command
And if the terminal does not send an uplink signal or a channel on the first antenna according to the power control command, judging that the terminal generates the first event, wherein the first event is that the terminal reduces the transmitting power of the first antenna according to the electromagnetic wave exposure.
In some embodiments, the determining module 302 is further configured to:
according to the measurement result, determining power information or received signal strength variation, wherein the power information represents a power control mechanism actually used by the terminal for sending an uplink signal or a channel on the first antenna;
and judging whether the terminal sends an uplink signal or a channel on the first antenna according to the power control command or not according to the power information or the received signal strength.
In some embodiments, the first power control information comprises: the network equipment instructs the terminal to increase the transmitting power of a first antenna or prolong the continuous transmitting time of the first antenna;
the second power control information includes: the network equipment determines the received power or the received signal strength of an uplink signal or a channel sent by the first antenna;
accordingly, the determining module 302 is further configured to:
judging whether the terminal raises the transmitting power sent by the first antenna or prolongs the continuous transmitting time of the first antenna according to the second power control information;
and if the transmission power is not increased or if the continuous transmission time is not prolonged, judging that the first event occurs to the terminal.
In some embodiments, the first transmitting module is further configured to: and transmitting a plurality of pieces of first power control information to the terminal within a preset time period.
In some embodiments, the network device 300 further comprises:
a second sending module: the terminal is used for sending configuration information to the terminal, wherein the configuration information is used for the terminal to configure Y or Y groups of uplink signals or channels;
wherein Y is a positive integer greater than or equal to 1, and Y is less than or equal to N.
In some embodiments, the network device 300 further comprises:
a receiving module, configured to receive at least one or a group of uplink signals or channels sent by one antenna of the N antennas of the terminal.
In some embodiments, the electromagnetic wave exposure comprises: electromagnetic wave energy absorption ratio and/or maximum exposure tolerance.
The network device provided in the embodiment of the present invention may execute the method embodiment shown in fig. 2, which has similar implementation principles and technical effects, and this embodiment is not described herein again.
Referring to fig. 4, fig. 4 is a structural diagram of a network device applied in the embodiment of the present invention, and as shown in fig. 4, a communication device 400 includes: a processor 401, a transceiver 402, a memory 403, and a bus interface, wherein:
in one embodiment of the present invention, the communication device 400 further comprises: a computer program stored in a memory 403 and executable on the processor 401, which computer program when executed by the processor 401 performs the steps in the embodiment shown in fig. 2.
In FIG. 4, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 401, and various circuits, represented by memory 403, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 402 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium, it being understood that the transceiver 402 is an optional component.
The processor 401 is responsible for managing the bus architecture and general processing, and the memory 403 may store data used by the processor 401 in performing operations.
The communication device provided in the embodiment of the present invention may execute the method embodiment shown in fig. 2, which has similar implementation principles and technical effects, and this embodiment is not described herein again.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read-Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable hard disk, a compact disc Read Only Memory (cd-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuit (ASIC). Additionally, the ASIC may reside in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the 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.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.

Claims (12)

1. A method for detecting terminal emission behavior is applied to network equipment, and is characterized by comprising the following steps:
measuring uplink signals or channels sent by N antennas of a terminal to obtain a measurement result;
judging whether a first event occurs in the terminal according to the measurement result;
wherein the first event comprises: the terminal reduces the transmitting power of M antennas;
n, M are positive integers greater than or equal to 1, and M is less than or equal to N.
2. The method of claim 1, wherein the terminal reducing the transmit power of the M antennas comprises: and the terminal reduces the transmitting power of the M antennas according to the exposure of the electromagnetic waves.
3. The method of claim 1, further comprising:
if the terminal has the first event, scheduling the terminal to transmit through a first uplink channel, or informing the terminal to stop periodic or semi-persistent transmission on a second uplink channel, or shortening the continuous transmission time of the M antennas of the terminal;
the first uplink channel is an uplink channel corresponding to other antennas except the M antennas;
the second uplink channel is an uplink channel corresponding to the M antennas.
4. The method according to claim 1, wherein said determining whether the first event occurs in the terminal according to the measurement result comprises:
comparing the first measurement value and the second measurement value;
if the difference value of the first measurement value and the second measurement value is larger than a first threshold value, judging that the first event occurs in the terminal;
wherein the first measurement value comprises: a measurement of an uplink signal or channel transmitted by a first antenna; the second measurement value includes: a measurement value of an uplink signal or channel transmitted by the second antenna; the first event is that the terminal reduces the transmission power of the second antenna;
alternatively, the first and second electrodes may be,
comparing the first measurement value and the second measurement value;
if the first measurement value is smaller than the second measurement value, judging that the first event occurs in the terminal;
wherein the first measurement value comprises: the average measurement value of the uplink signal or the channel transmitted by the first antenna in a first time period; the second measurement value includes: an average measurement value of an uplink signal or channel sent by the first antenna in a second time period, where the second time period is a time period before the first time period, and the first event is the reduction of the transmission power of the first antenna;
alternatively, the first and second electrodes may be,
comparing the first measurement value to a second threshold value;
if the first measured value is smaller than the second threshold value, judging that a first event occurs in the terminal;
wherein the first measurement value comprises: the method comprises the steps that an average measured value of an uplink signal or a channel sent by a first antenna in a preset time period is obtained, and the first event is that the terminal reduces the transmitting power of the first antenna.
5. The method of claim 1, further comprising:
sending a power control command to the terminal, wherein the power control command indicates a power control mechanism used by the terminal for sending an uplink signal or a channel on the first antenna;
the judging whether the terminal generates the first event according to the measurement result comprises the following steps:
judging whether the terminal sends an uplink signal or a channel on the first antenna according to the power control command according to the measurement result;
if the terminal does not transmit an uplink signal or a channel on the first antenna according to the power control command, determining that the first event occurs on the terminal;
wherein the first event is that the terminal reduces the transmission power of the first antenna.
6. The method of claim 5, wherein the determining whether the terminal transmits an uplink signal or a channel on the first antenna according to the power control command according to the measurement result comprises:
according to the measurement result, determining power information or received signal strength variation, wherein the power information represents a power control mechanism actually used by the terminal for sending an uplink signal or a channel on the first antenna;
and judging whether the terminal sends an uplink signal or a channel on the first antenna according to the power control command or not according to the power information or the received signal strength.
7. The method of claim 1, further comprising:
sending configuration information to the terminal, wherein the configuration information is used for the terminal to configure Y or Y groups of uplink signals or channels;
wherein Y is a positive integer greater than or equal to 1, and Y is less than or equal to N.
8. The method of claim 1, further comprising:
and receiving at least one or a group of uplink signals or channels sent by one antenna in the N antennas of the terminal.
9. The method of claim 2, wherein the electromagnetic wave exposure comprises: electromagnetic wave energy absorption ratio and/or maximum exposure tolerance.
10. A network device, comprising:
the measuring module is used for measuring uplink signals or channels sent by N antennae of the terminal to obtain a measuring result;
the judging module is used for judging whether a first event occurs in the terminal according to the measuring result;
wherein the first event comprises: the terminal reduces the transmitting power of M antennas;
n, M are positive integers greater than or equal to 1, and M is less than or equal to N.
11. A communication device, comprising: processor, memory and program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of detecting terminal emission behaviour according to any one of claims 1 to 9.
12. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of detecting terminal transmission behavior according to any one of claims 1 to 9.
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CN109391984A (en) * 2017-08-10 2019-02-26 维沃移动通信有限公司 A kind of beam switching method, mobile terminal and computer readable storage medium
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