CN117597990A

CN117597990A - Communication method and terminal

Info

Publication number: CN117597990A
Application number: CN202180100248.3A
Authority: CN
Inventors: 邢金强
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2024-02-23
Also published as: WO2023000331A1

Abstract

A communication method and a terminal are provided, the method includes: the terminal performs uplink transmission in a first transmission time window; the uplink transmission time length is smaller than or equal to the time length of the first transmission time window, the maximum transmission power of uplink transmission is larger than the limit of the power level of the terminal on the maximum transmission power, and the average value of the transmission power of uplink transmission in the first transmission time window is smaller than or equal to the limit of the power level of the terminal on the maximum transmission power. The method avoids that the maximum transmitting power of the terminal for uplink transmission cannot be higher than the maximum transmitting power corresponding to the power class in the traditional uplink transmitting process, and is beneficial to expanding the uplink coverage of the terminal. On the other hand, by limiting the transmission duration of the uplink transmission, the average value of the transmission power of the uplink transmission in the first transmission time window is smaller than or equal to the limit of the power class of the terminal, so that the radiation to the human body in the uplink transmission process of the terminal is reduced.

Description

Communication method and terminal

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and a terminal.

Background

In general, the higher the transmission power of the terminal, the greater the radiation to the human body. Therefore, a Power Class (PC) mechanism is introduced to limit the maximum transmission power of the terminal when uplink transmission is performed, so as to ensure that the transmission power of the terminal meets the human radiation safety specification. However, due to the introduction of the PC mechanism, the maximum transmit power used by the terminal in uplink transmission is limited, resulting in a smaller uplink coverage of the terminal.

Disclosure of Invention

The application provides a communication method and a terminal, so as to enlarge the uplink coverage of the terminal.

In a first aspect, a communication method is provided, including: the terminal performs uplink transmission in a first transmission time window; the uplink transmission time length is smaller than or equal to the time length of the first transmission time window, the maximum transmission power of the uplink transmission is larger than the limit of the power level of the terminal on the maximum transmission power, and the average value of the uplink transmission power in the first transmission time window is smaller than or equal to the limit of the power level of the terminal on the maximum transmission power.

In a second aspect, there is provided a terminal comprising: a transmitting unit, configured to perform uplink transmission in a first transmission time window; the uplink transmission time length is smaller than or equal to the time length of the first transmission time window, the maximum transmission power of the uplink transmission is larger than the limit of the power level of the terminal on the maximum transmission power, and the average value of the uplink transmission power in the first transmission time window is smaller than or equal to the limit of the power level of the terminal on the maximum transmission power.

In a third aspect, there is provided a terminal comprising a memory for storing a program and a processor for invoking the program in the memory to perform the method according to the first aspect.

In a fourth aspect, there is provided an apparatus comprising a processor for calling a program from a memory to perform the method of the first aspect.

In a fifth aspect, a chip is provided, comprising a processor for calling a program from a memory, so that a device on which the chip is mounted performs the method of the first aspect.

In a sixth aspect, there is provided a computer-readable storage medium having stored thereon a program that causes a computer to execute the method of the first aspect.

In a seventh aspect, there is provided a computer program product comprising a program for causing a computer to perform the method of the first aspect.

In an eighth aspect, there is provided a computer program for causing a computer to perform the method of the first aspect.

The terminal performs uplink transmission in the first transmission time window, wherein the maximum transmission power of the uplink transmission is greater than the limit of the power level of the terminal on the maximum transmission power, and the average value of the transmission power of the uplink transmission in the first transmission time window is smaller than or equal to the limit of the power level of the terminal, so that the problem that the maximum transmission power of the terminal for uplink transmission cannot be higher than the maximum transmission power corresponding to the power level in the traditional uplink transmission process is avoided, and the uplink coverage of the terminal is favorably enlarged.

On the other hand, by limiting the transmission duration of the uplink transmission, the average value of the transmission power of the uplink transmission in the first transmission time window is smaller than or equal to the limit of the power class of the terminal, so that the radiation to the human body in the uplink transmission process of the terminal is reduced.

Drawings

Fig. 1 is a wireless communication system 100 to which embodiments of the present application apply.

Fig. 2 is a schematic diagram of the total amount of transmit power used by a terminal for uplink transmission under the limitation of power class.

Fig. 3 is a schematic diagram of a transmitting circuit of a terminal to which an embodiment of the present application is applied.

Fig. 4 is a flow chart of a communication method of an embodiment of the present application.

Fig. 5 is a graph comparing the transmission power with time in the uplink transmission process according to the embodiment of the present application and the conventional uplink transmission process.

Fig. 6 is a graph comparing the transmission power with time in the uplink transmission process according to another embodiment of the present application and the conventional uplink transmission process.

Fig. 7 is a graph comparing the transmission power with time in the uplink transmission process according to another embodiment of the present application and the conventional uplink transmission process.

Fig. 8 is a graph comparing the transmission power with time in the uplink transmission process according to another embodiment of the present application and the conventional uplink transmission process.

Fig. 9 is a graph comparing a transmission power change with time in an uplink transmission process according to another embodiment of the present application with a conventional uplink transmission process.

Fig. 10 is a schematic diagram of uplink coverage of a terminal transmitting uplink under the limitation of power level.

Fig. 11 is a schematic diagram of a terminal according to an embodiment of the present application.

Fig. 12 is a schematic structural diagram of a communication device of an embodiment of the present application.

Detailed Description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a wireless communication system 100 to which embodiments of the present application apply. The wireless communication system 100 may include a network device 110 and a terminal device 120. Network device 110 may be a device that communicates with terminal device 120. Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices 120 located within the coverage area.

Fig. 1 illustrates one network device and two terminals, alternatively, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within a coverage area, which is not limited in this embodiment of the present application.

Optionally, the wireless communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the technical solution of the embodiments of the present application may be applied to various communication systems, for example: fifth generation (5th generation,5G) systems or New Radio (NR), long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), and the like. The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system, a satellite communication system and the like.

The terminal device in the embodiments of the present application may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a Mobile Terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the application can be a device for providing voice and/or data connectivity for a user, and can be used for connecting people, things and machines, such as a handheld device with a wireless connection function, a vehicle-mounted device and the like. The terminal device in the embodiments of the present application may be a mobile phone (mobile phone), a tablet (Pad), a notebook, a palm, a mobile internet device (mobile internet device, MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), or the like. Alternatively, the UE may be used to act as a base station. For example, the UEs may act as scheduling entities that provide side-uplink signals between UEs in V2X or D2D, etc. For example, a cellular telephone and a car communicate with each other using side-link signals. Communication between the cellular telephone and the smart home device is accomplished without relaying communication signals through the base station.

The network device in the embodiments of the present application may be a device for communicating with a terminal device, which may also be referred to as an access network device or a radio access network device, e.g. the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (radio access network, RAN) node (or device) that accesses the terminal device to the wireless network. The base station may broadly cover or replace various names in the following, such as: a node B (NodeB), an evolved NodeB (eNB), a next generation NodeB (gNB), a relay station, an access point, a transmission point (transmitting and receiving point, TRP), a transmission point (transmitting point, TP), a master MeNB, a secondary SeNB, a multi-mode wireless (MSR) node, a home base station, a network controller, an access node, a wireless node, an Access Point (AP), a transmission node, a transceiver node, a baseband unit (BBU), a remote radio unit (Remote Radio Unit, RRU), an active antenna unit (active antenna unit, AAU), a radio head (remote radio head, RRH), a Central Unit (CU), a Distributed Unit (DU), a positioning node, and the like. The base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem, or chip for placement within the aforementioned device or apparatus. The base station may also be a mobile switching center, a device-to-device (D2D), a vehicle-to-device (V2X), a device that assumes a base station function in machine-to-machine (M2M) communication, a network-side device in a 6G network, a device that assumes a base station function in a future communication system, or the like. The base stations may support networks of the same or different access technologies. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device.

The base station may be fixed or mobile. For example, a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to function as a device to communicate with another base station.

In some deployments, the network device in embodiments of the present application may refer to a CU or a DU, or the network device includes a CU and a DU. The gNB may also include an AAU.

Network devices and terminal devices may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. In the embodiment of the application, the scene where the network device and the terminal device are located is not limited.

It should be understood that all or part of the functionality of the communication device in this application may also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (e.g. a cloud platform).

In the wireless communication system 100, different terminal devices are typically configured with different PCs to limit the maximum transmit power of the terminal at the time of uplink transmission. In general, if the maximum transmission power corresponding to the power class configured by the terminal is higher, that is, the terminal may use higher transmission power when performing uplink transmission, the uplink coverage of the terminal is larger, for example, the terminal located in the area 2 in fig. 1. If the maximum transmission power corresponding to the power class configured by the terminal is low, that is, the terminal can only use low transmission power when performing uplink transmission, the uplink coverage of the terminal is small, for example, the terminal located in the area 1 in fig. 1.

For the convenience of understanding the present application, the power level of the terminal and the transmitting circuit of the terminal are described below with reference to fig. 2 to 3, respectively.

Power class

In general, the higher the transmission power of the terminal, the greater the radiation to the human body. Therefore, a power class mechanism is introduced to limit the maximum transmission power used by the terminal in uplink transmission, so that the transmission power of the terminal in uplink transmission is ensured to meet the human radiation safety specification. Fig. 2 is a schematic diagram of the total amount of transmit power used by a terminal for uplink transmission under the limitation of power class. Referring to fig. 2, assuming that the terminal is configured with a power level of PC3 and the maximum transmission power corresponding to PC3 is 23 decibel milliwatts (dBm), the terminal cannot use the maximum transmission power exceeding the maximum transmission power limited by PC3, that is, 23dBm, when transmitting uplink in one transmission subframe (for example, 1 ms).

In addition, when the terminal needs to transmit a plurality of uplink signals at the same time, the total transmitting power of transmitting the plurality of uplink signals cannot exceed the limit of the power class corresponding to the terminal. For example, when a terminal transmits a plurality of uplink signals through a plurality of frequency bands at the same time, the total transmission power of the terminal transmitting the plurality of uplink signals on the plurality of frequency bands cannot exceed the above-described limit of the power level. The application scenario of transmitting the uplink signal through multiple frequency bands may be a scenario in which the terminal works in carrier aggregation (carrier aggregation, CA), evolved universal terrestrial radio access, dual connectivity mode (EUTRA-NR dual connection, EN-DC) of a new air interface, dual connectivity (dual connectivity, DC), and the like. For another example, when the terminal transmits multiple uplink signals simultaneously through the single-band multiple antennas, the total transmission power of the terminal transmitting the multiple uplink signals cannot exceed the above-mentioned limit of the power level.

Transmitting circuit of terminal

In general, a terminal may be provided with a plurality of Power Amplifiers (PAs) for amplifying signal power, and each PA may be used to amplify signals of a different frequency band or the same frequency band. For each PA, its maximum power that can be amplified is limited. When a signal is amplified by the PA, it is also processed by some radio frequency devices, and then it can be transmitted to the antenna corresponding to the PA for uplink transmission. However, the power of the signal is inevitably attenuated after the signal is processed by the radio frequency device, so in order to accurately know the transmitting power of the signal, a radio frequency port may be arranged in front of the antenna for measuring the transmitting power of the signal.

In general, the maximum transmit power corresponding to the power class described above is also the transmit power used to limit the detection of upstream signals at the rf port.

Fig. 3 is a schematic diagram of a transmitting circuit of a terminal to which an embodiment of the present application is applied. The terminal as shown in fig. 3 may be provided with three PAs, PA1, PA2 and PA3. The PA1 is configured to amplify the signal power of the frequency band 1, and the corresponding power class is PC3. The PA2 is used for amplifying the signal power of the frequency band 2, and the corresponding power class is PC2. The PA3 is used for amplifying the signal power of the frequency band 3, and the corresponding power class is PC2. The maximum power specified by PC2 is 26dBm, and the maximum power specified by PC3 is 23dBm.

Accordingly, the power of the signal output by PA1, through attenuation of some radio frequency devices, cannot exceed 23dBm at the transmission power measured at radio frequency port 1. The power of the signal output by PA2, through attenuation of some radio frequency devices, is measured at radio frequency port 2 with a transmit power not exceeding 26dBm. The power of the signal output by PA3, through attenuation of some radio frequency devices, is measured at radio frequency port 3 with a transmit power not exceeding 26dBm.

As described above, a PC mechanism is introduced into the existing communication mechanism to control the radiation of the transmission power of the terminal to the human body, but the introduction of the PC mechanism limits the maximum transmission power of the terminal, resulting in a reduction of the uplink coverage of the terminal. For example, referring to fig. 1, assuming that the maximum transmit power supported by the terminal hardware may enable the terminal to transmit uplink with the network device 110 in the area 2, at this time, the area 2 may be regarded as an uplink coverage of the terminal. However, due to the introduction of the PC mechanism, the maximum transmission power of the terminal for uplink transmission is limited, so that the maximum transmission power of the terminal for uplink transmission is smaller than the maximum transmission power supported by the terminal hardware, in this case, the terminal can only perform uplink transmission with the network device 110 within the range of the area 1, and the uplink coverage of the terminal is reduced from the area 2 to the area 1.

Therefore, in order to avoid the above-mentioned problem, the present application provides a communication scheme, that is, in the uplink transmission process, the terminal is allowed to use a maximum transmission power greater than the maximum transmission power corresponding to the power class of the terminal in a shorter time, so as to control the radiation of the transmission power to the human body while improving the uplink coverage of the terminal.

The following describes a communication method according to an embodiment of the present application with reference to fig. 4. Fig. 4 is a flow chart of a communication method of an embodiment of the present application. The method shown in fig. 4 includes step S410.

S410, the terminal performs uplink transmission in the first transmission time window.

The uplink transmission time length is smaller than or equal to the time length of the first transmission time window, the maximum transmission power of uplink transmission is larger than the limit of the power level of the terminal on the maximum transmission power, and the average value of the uplink transmission power in the first transmission time window is smaller than or equal to the limit of the power level of the terminal.

The above uplink transmission may be understood as that the terminal transmits one uplink signal or that the terminal transmits a plurality of uplink signals at the same time. When the terminal transmits a plurality of uplink signals simultaneously, the maximum transmission power of the uplink transmission may be understood as the maximum total transmission power when the terminal transmits a plurality of uplink signals simultaneously.

The first emission time window may be understood as a period of time. In some implementations, the duration of the first transmission time window may be less than or equal to a measured duration of the power level of the terminal. In other implementations, the duration of the first transmission time window may be greater than a measured duration of the power class of the terminal and less than or equal to a test duration of the absorption ratio (specific absorption ratio, SAR) of the terminal. Based on current regulations, the power level measurement duration is 1 millisecond (ms), and the SAR test duration may be 6 minutes. Of course, the measurement duration of the power level and the SAR test duration may be adjustable, which is not limited in the embodiment of the present application.

The maximum transmission power of the uplink transmission is greater than the limit of the power class of the terminal to the maximum transmission power, which can be understood as the maximum transmission power of the uplink transmission is greater than the maximum transmission power corresponding to the power class of the terminal. For example, the power class of the terminal is PC3, and the maximum transmission power corresponding to the power class PC3 is 23dBm, then the maximum transmission power of the uplink transmission is greater than 23dBm.

In some implementations, the terminal may use the same transmission power for uplink transmission during the transmission duration of uplink transmission, that is, the terminal may use the maximum transmission power for uplink transmission during the transmission duration of uplink transmission. Of course, the terminal may also use different transmission power to perform uplink transmission within the transmission duration of uplink transmission. For specific examples of the above two implementations, reference may be made to the following descriptions in conjunction with fig. 5 to 9, and for brevity, detailed descriptions are omitted herein.

In the embodiment of the application, the terminal performs uplink transmission in the first transmission time window, wherein the maximum transmission power of uplink transmission is greater than the limit of the power level of the terminal on the maximum transmission power, and the average value of the transmission power of uplink transmission in the first transmission time window is smaller than or equal to the limit of the power level of the terminal, so that the problem that the maximum transmission power of uplink transmission by the terminal cannot be higher than the maximum transmission power corresponding to the power level in the traditional uplink transmission process is avoided, and the uplink coverage of the terminal is favorably enlarged.

In general, in order to maximize uplink coverage of a terminal, a maximum transmission power of uplink transmission may be configured as a maximum transmission power supported by hardware of the terminal.

Based on the conventional power class rule, the total amount of transmission power (also called second total transmission power) for uplink transmission with the maximum transmission power corresponding to the power class in the measurement duration of the power class meets the human radiation safety specification, so in the embodiment of the application, the total amount of transmission power (also called first total transmission power) for uplink transmission in the first time window of the terminal can be controlled to be equal to the second total transmission power, so as to meet the human radiation safety specification. Of course, the first total transmission power may be slightly smaller than the second total transmission power, which is not specifically limited in the embodiment of the present application.

In order to equalize the first total transmission power and the second total transmission power, the terminal may determine a transmission duration of the uplink transmission based on the second total transmission power. In some implementations, the terminal may calculate a duty cycle of the transmission duration in the power class test duration based on the second total transmission power, and determine the transmission duration of the uplink transmission from the duty cycle. I.e. before step S410, the above method further comprises: the terminal determines the duty ratio of the transmitting time length in the testing time length of the power class based on the second total transmitting power; the terminal determines the transmitting duration based on the duty ratio of the transmitting duration in the testing duration of the power level, the testing duration of the power level and the duration of the first time window.

Referring to fig. 5, it is assumed that the maximum transmission power supported by the hardware of the terminal is 28dBm, and the terminal needs to be configured to always transmit with 28dBm for the transmission duration t of the uplink transmission. The power class of the terminal is PC3, the maximum transmitting power corresponding to PC3 is 23dBm, the testing duration T of the power class is 1ms, and the duration of the first time window is 1ms.

Since the maximum transmission power of 28dBm supported by the hardware of the terminal is about three times of the maximum transmission power of 23dBm corresponding to the PC3, in order to make the first total transmission power corresponding to the maximum transmission power supported by the hardware equal to the second total transmission power corresponding to the power level PC3, the transmission duration of uplink transmission has a ratio x% of about 30% in the test duration of the power level.

Specifically, based on the first total transmission power being the same as the second total transmission power, and the transmission duration of the terminal using 23dBm for uplink transmission being 1ms can be understood as occupying 100% of the duration, the linear power value P corresponding to 28dBm _28dBm A product of the above duty ratio x%, equal to a linear power value P corresponding to 23dBm _23dBm Product with 100%, i.e. P _28dBm ×x％＝P _23dBm X100%, wherein the conversion formula between the linear power value PW and X decibel mW (dBm) is P (W) = [ (1 mW) 10 ^(XdBm/10) ]Then

x％＝(1mW)10 ^(23dBm/10) /(1mW)10 ^(28dBm/10) ＝10 ^{(23dBm-28dBm)/10} ≈30％。

In other implementations, the terminal may further determine a transmission duration of the uplink transmission based on the second total transmission power and the maximum transmission power of the uplink transmission. The above manner of calculating the transmission duration of uplink transmission is not particularly limited in the embodiments of the present application.

Of course, in the embodiment of the present application, the transmission duration of the uplink transmission may be calculated by the terminal as described above, or the terminal may report the transmission power of the uplink transmission to the network device, and the network device calculates the transmission duration of the uplink transmission. The uplink transmission duration corresponding to the maximum transmission power of different uplink transmissions may also be specified in the protocol, which is not specifically limited in the embodiment of the present application.

In the embodiment of the present application, the transmission duration of uplink transmission of the terminal may be controlled by adjusting the duration of the first transmission time window. In some implementations, if there are more uplink data to be transmitted by the terminal, the transmission duration of the uplink transmission may be prolonged by increasing the duration of the first time window.

For example, based on the above description, the maximum transmission power supported by the hardware of the terminal is 28dBm, and the terminal needs to be configured to always transmit with 28dBm during the transmission duration t of the uplink transmission. The power class of the terminal is PC3, the maximum transmitting power corresponding to PC3 is 23dBm, the testing duration T of the power class is 1ms, and the duty ratio of the transmitting duration of the uplink transmission in the testing duration of the power class is about 30%.

Then, referring to fig. 6, if the transmission time required for uplink data to be transmitted is 1ms, the duration of the first time window may be set to 3ms, the duty ratio of the transmission duration based on the uplink transmission in the test duration of the power level is about 30%, and the test duration of the power level is 1ms, where the transmission duration of the uplink transmission is just 1ms.

For another example, based on the above description, the maximum transmission power supported by the hardware of the terminal is 28dBm, and the terminal needs to be configured to always transmit uplink with 28dBm during the transmission duration t of the uplink transmission. The power class of the terminal is PC3, the maximum transmitting power corresponding to PC3 is 23dBm, the testing duration T of the power class is 1ms, and the duty ratio of the transmitting duration of the uplink transmission in the testing duration of the power class is about 30%.

Then, referring to fig. 7, if the transmission time required for uplink data to be transmitted is (4/3) ms, the duration of the first time window may be set to 4ms, the ratio of the transmission duration based on the uplink transmission to the test duration of the power level is about 30%, and the test duration of the power level is 1ms, where the transmission duration of the uplink transmission is just (4/3) ms.

In the embodiment of the application, the terminal performs uplink transmission in a continuous time period, which is beneficial to reducing the transmission delay when the terminal transmits data through uplink transmission.

Of course, in other implementations, if there are more uplink data to be transmitted by the terminal, the duration of the first time window may not be adjusted, and the uplink data to be transmitted may be transmitted to the network device through multiple uplink transmissions.

For example, based on the above description, the maximum transmission power supported by the hardware of the terminal is 28dBm, and the terminal needs to be configured to always transmit with 28dBm during the transmission duration t of the uplink transmission. The power class of the terminal is PC3, the maximum transmitting power corresponding to PC3 is 23dBm, the duration of the first time window is 1ms, the testing duration T of the power class is 1ms, and the ratio of the transmitting duration of uplink transmission to the testing duration of the power class is about 30%.

Then, referring to fig. 8, if the total transmission time required for uplink data to be transmitted is (4/3) ms, 4 first time windows are required to complete the transmission of the uplink data.

In the above-mentioned connection with fig. 5 to 8, the terminal performs uplink transmission with the same transmission power during the transmission duration of the uplink transmission. However, assuming that the terminal is moving in the direction toward the network device, the terminal may only need to occupy a short period of time within the transmission period of the uplink transmission, and perform the uplink transmission at the maximum transmission power of the uplink transmission. In the rest of the uplink transmission time, the transmission power of the terminal for uplink transmission can be lower than the maximum transmission power of uplink transmission due to the closer distance between the terminal and the network device. That is, the transmission power of the uplink transmission by the terminal is different in the transmission duration of the uplink transmission.

Or, in the transmission duration of the uplink transmission, the uplink transmission is performed by using a plurality of transmission powers, and the power values of at least two transmission powers in the plurality of transmission powers are unequal. For example, in the transmission duration of the uplink transmission, the power values of two transmission powers in the plurality of transmission powers are unequal. For another example, the power value of each of the plurality of transmit powers is different during the transmit time period of the uplink transmission.

For example, referring to fig. 9, assuming that the power level of the terminal is PC2, the maximum transmission power corresponding to PC2 is 26dBm, the test duration T of the power level is 1ms, the transmission duration of the uplink transmission is 2ms, the length of the first time window is 4ms, and based on the second total transmission power corresponding to PC2, it is known that the ratio of the transmission duration of the uplink transmission in the first time window is less than or equal to 60%, and then the first total transmission power is less than or equal to the second total transmission power corresponding to PC 2. The maximum transmit power supported by the hardware of the terminal is 28dBm. In the process of moving the terminal to the network equipment, the terminal only needs to occupy t ₁ ms duration, uplink transmission at 28dBm transmit power, where t ₁ ms<1ms and the remaining duration t of the transmission duration of the uplink transmission _{Residual of} In, at first, P _t2 Uplink transmission is carried out by the transmission power of (2) and the time t is continued ₂ ms, then P _t3 Uplink transmission is carried out by the transmission power of (2) and the time t is continued ₃ ms，t _{Residual of} ＝t ₂ ms+t ₃ ms。

At this time, it is only necessary to control the average value of the uplink transmission power of the terminal within 4ms to be less than or equal to 26dBm, that is, to control the average value of the uplink transmission power of the terminal within 4ms to be less than or equal to the corresponding maximum power level of the power levels.

Based on the description of the power levels, when the terminal needs to send multiple uplink signals at the same time, the total transmission power of the multiple uplink signals is limited by the power level of the terminal, so that the uplink coverage of the terminal is smaller than that of a single uplink signal when the terminal sends the multiple uplink signals, and the moving range of the terminal is reduced. Referring to fig. 10, it is assumed that a maximum transmission power corresponding to a power class of the terminal 120 can support movement of the terminal 120 within the range of the region 2 when the terminal 120 device transmits a single uplink signal to the network device 110 only on the frequency band 1. However, if the terminal 120 needs to transmit a plurality of uplink signals to the network device 110 simultaneously on the frequency band 1 and the frequency band 2, the total transmission power of the plurality of uplink signals cannot exceed the maximum transmission power corresponding to the power class of the terminal, and at this time, the terminal 120 can only move within the area 1.

Based on the above description, it can be known that the communication method in the embodiment of the present application can also solve the above problem, and the communication method in the embodiment of the present application is described below based on two scenarios in which the terminal transmits a plurality of uplink signals, respectively.

When uplink transmission is performed in a single-band multi-antenna scenario, the step S410 includes: and the terminal performs uplink transmission on a single frequency band through a plurality of antennas in a first transmission time window.

When uplink transmission is performed in a multiband scenario, step S410 includes: and the terminal performs uplink transmission through a plurality of frequency bands in a first transmission time window.

For example, the terminal may be provided with two PAs, PA1 and PA2. The PA1 is configured to amplify the signal power of the frequency band 1, and the corresponding power class is PC3. The PA2 is used for amplifying the signal power of the frequency band 2, and the corresponding power class is PC2. The maximum power specified by PC2 is 26dBm, and the maximum power specified by PC3 is 23dBm. Therefore, the maximum transmission power that the terminal can support is (1 mW) 10 ^(23dBm/10) +(1mW)10 ^(26dBm/10) ≈(1mW)10 ^(28dBm/10) I.e. 28dBm. At this time, the terminal may perform uplink transmission with a maximum transmission power of 28dBm as uplink transmission.

In some cases, the terminal uses a higher transmission power for uplink transmission, which may interfere with communications of other users. Thus, the terminal may determine whether to enable power boosting based on the scheduling of the network device, i.e., uplink transmission using the maximum transmit power of uplink transmission (alternatively referred to as "boosted transmit power"). Of course, if interference is not considered, or if interference is not present, the terminal may directly determine whether to enable power enhancement, without scheduling of network devices, which is not specifically limited in the embodiment of the present application.

Prior to step S410, the method further includes: the terminal sends a power enhancement request to the network equipment, wherein the power enhancement request is used for requesting to enhance the transmitting power of the terminal; the terminal receives power enhancement enabling information sent by the network device, and the power enhancement enabling information is used for enabling the terminal to enhance the transmitting power.

In general, the network device needs to determine whether to interfere with communications of other devices based on the enhanced transmission power, so that the terminal may carry power enhancement capability information in a power enhancement request, where the power enhancement capability information is used to indicate the maximum transmission power of uplink transmission. Of course, the terminal may indicate the maximum transmit power of the uplink transmission to the network device through other information or dedicated signaling.

In the embodiment of the present application, a specific manner in which the terminal indicates the maximum transmission power of uplink transmission to the network device is not limited. In some implementations, the terminal may indicate the maximum transmit power of the uplink transmission by sending a difference between the maximum transmit power of the uplink transmission and a maximum transmit power corresponding to the power class to the network device. For example, the terminal may send uplink transmissions to the network device at a maximum transmit power 1dBm higher than the maximum transmit power corresponding to the power class. In other implementations, the terminal may send the power value of the maximum transmit power of the uplink transmission directly to the network device.

If the terminal can indicate the maximum transmission power of the uplink transmission by sending the difference between the maximum transmission power of the uplink transmission and the power corresponding to the power class to the network equipment. The terminal may indicate the above difference using a bitmap (bit map). For example, if the difference includes {1dB, 2dB, 3dB, 4dB, 5dB, 6dB }, then the specific difference may be represented using different bits in the bitmap. Of course, the terminal may also send the above difference directly to the network device. The embodiments of the present application are not limited in this regard.

Optionally, the power boost capability information may also include a transmission duration of the uplink transmission. For example, the duty cycle of the transmit duration of the uplink transmission in the measured duration of the power class may be carried. For example, the power boost capability information may indicate that the maximum transmission power of the uplink transmission is increased by 3dBm with respect to the maximum transmission power corresponding to the power level, and the transmission duration of the uplink transmission has a 50% duty cycle in the measurement duration of the power level. Of course, in the embodiment of the present application, the above-mentioned duty ratio may also be sent through other information or dedicated signaling, which is not limited in the embodiment of the present application.

In the embodiment of the present application, the triggering condition for the terminal to send the power enhancement request is not specifically limited. For example, the terminal may send a power boost request to the network device when the terminal is at the cell edge and needs to boost transmit power to increase uplink coverage. For another example, the terminal may send a power boost request to the network device when the terminal has a large amount of uplink data to transmit.

In addition, in the case that the terminal transmits the power enhancement request to the network device for multiple times, the terminal may carry the power enhancement capability information only when transmitting the power enhancement request to the network device for the first time, so as to reduce the transmission overhead of the information. Of course, the terminal may also carry the power enhancement capability information each time a power enhancement request is sent to the network device, so as to improve the reliability of information transmission. The embodiments of the present application are not limited in this regard.

In some cases, the network device may adjust the maximum transmit power reported by the terminal. For example, to avoid interference, the network device may reduce the maximum transmit power reported by the terminal. Of course, the network device may not adjust the maximum transmit power reported by the terminal.

Correspondingly, if the network device adjusts the maximum transmitting power reported by the terminal, the network device may carry the adjusted maximum transmitting power in the power enhancement enabling information sent to the terminal, so as to instruct the terminal to use the adjusted maximum transmitting power value to perform uplink transmission. The specific carrying manner is as described above, and the difference between the maximum transmitting power reported by the terminal and the adjusted maximum transmitting power can be carried in the power enhancement enabling information. Of course, the adjusted maximum transmission power may also be carried directly in the power enhancement enabling information.

If the network device does not adjust the maximum transmitting power reported by the terminal, the network device may also carry the maximum transmitting power in the power enhancement enabling information sent to the terminal, where the maximum transmitting power is the maximum transmitting power reported by the terminal. The specific carrying manner can be referred to above, and for brevity, will not be described in detail herein. Of course, in this case, the network device may not send the maximum transmit power to the terminal.

Alternatively, the network device may disable the terminal to enhance the transmission power by transmitting power-enhancing disable information to the terminal, or the power-enhancing disable information is used to disable the terminal to perform uplink transmission using the maximum transmission power of the uplink transmission. Namely, the method further comprises the steps of: the terminal receives power enhancement disabling information sent by the network device, and the power enhancement disabling information is used for enabling the disabling terminal to enhance the transmitting power.

Accordingly, after receiving the power enhancement disabling information, the terminal can resume the uplink transmission based on the power class mechanism, i.e. the maximum transmission power during uplink transmission cannot exceed the maximum transmission power corresponding to the power class.

Method embodiments of the present application are described above in detail in connection with fig. 1-10, and apparatus embodiments of the present application are described below in detail in connection with fig. 11-12. It is to be understood that the description of the method embodiments corresponds to the description of the device embodiments, and that parts not described in detail can therefore be seen in the preceding method embodiments.

Fig. 11 is a schematic diagram of a terminal according to an embodiment of the present application. The terminal 1100 shown in fig. 11 includes a transmitting unit 1110.

The transmitting unit 1110 may be configured to perform uplink transmission in a first transmission time window. The uplink transmission time length is smaller than or equal to the time length of the first transmission time window, the maximum transmission power of the uplink transmission is larger than the limit of the power level of the terminal on the maximum transmission power, and the average value of the uplink transmission power in the first transmission time window is smaller than or equal to the limit of the power level of the terminal on the maximum transmission power.

Optionally, the maximum transmission power of the uplink transmission is the maximum transmission power supported by hardware of the terminal.

Optionally, the duration of the first transmission time window is less than or equal to the measurement duration of the power level of the terminal.

Optionally, the duration of the first transmission time window is greater than the measurement duration of the power level of the terminal and less than or equal to the test duration of the absorption rate SAR of the terminal.

Optionally, in a transmission duration of the uplink transmission, a plurality of transmission powers are used for the uplink transmission, and power values of at least two transmission powers in the plurality of transmission powers are unequal.

Optionally, the transmitting unit may be further configured to perform the uplink transmission on a single frequency band through multiple antennas in the first transmission time window.

Optionally, the transmitting unit 1110 may further be configured to: and in the first transmission time window, the uplink transmission is carried out through a plurality of frequency bands.

Optionally, the transmitting unit 1110 may be configured to send a power boost request to a network device, where the power boost request is used to request the uplink transmission using the maximum transmission power of the uplink transmission; and the receiving unit is used for receiving the power enhancement enabling information sent by the network equipment, wherein the power enhancement enabling information is used for enabling the terminal to use the maximum transmission power of the uplink transmission to carry out the uplink transmission.

Optionally, the power boost request carries power boost capability information, where the power boost capability information is used to indicate a maximum transmission power of the uplink transmission.

Optionally, the receiving unit may be further configured to receive power-up disabling information sent by the network device, where the power-up disabling information is used to disable the terminal to use the maximum transmission power of the uplink transmission for the uplink transmission.

Optionally, the first total transmission power of the terminal is smaller than or equal to the second total transmission power of the terminal, where the first total transmission power is the total transmission power of the terminal for uplink transmission in the first time window, and the second total transmission power is the total transmission power of the terminal for uplink transmission in the measurement duration of the power class by using the maximum transmission power corresponding to the power class.

Optionally, the terminal further includes: the determining unit may be configured to determine, based on the second total transmission power, a duty cycle of the transmission duration within a measurement duration of a power class of the terminal; and determining the transmission duration based on the duty ratio of the transmission duration in the measurement duration of the power level of the terminal and the duration of the first transmission time window.

In some alternative embodiments, the transmitting unit 1110 and the receiving unit may be a transceiver 1230 in the communication apparatus 1200, and the determining unit may be a processor 1210 in the communication apparatus 1200. The communication device 1200 may also include a memory 1220. The specific structure of the communication apparatus 1200 can be seen in fig. 12.

Fig. 12 is a schematic structural diagram of a communication device of an embodiment of the present application. The dashed lines in fig. 12 indicate that the unit or module is optional. The communication device 1200 may be used to implement the methods described in the method embodiments described above. The communication apparatus 1200 may be a chip or a terminal device.

The communications apparatus 1200 can include one or more processors 1210. The processor 1210 may support the communications apparatus 1200 to implement the methods described in the method embodiments above. The processor 1210 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (central processing unit, CPU). Alternatively, the processor may be another general purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The communications apparatus 1200 can also include one or more memories 1220. The memory 1220 has stored thereon a program that can be executed by the processor 1210 to cause the processor 1210 to perform the method described in the method embodiments above. The memory 1220 may be separate from the processor 1210 or may be integrated in the processor 1210.

The communication device 1200 may also include a transceiver 1230. Processor 1210 may communicate with other devices or chips through transceiver 1230. For example, the processor 1210 may transmit and receive data to and from other devices or chips through the transceiver 1230.

The embodiment of the application also provides a computer readable storage medium for storing a program. The computer-readable storage medium may be applied to a terminal or a network device provided in the embodiments of the present application, and the program causes a computer to execute the method performed by the terminal or the network device in the embodiments of the present application.

Embodiments of the present application also provide a computer program product. The computer program product includes a program. The computer program product may be applied to a terminal or a network device provided in embodiments of the present application, and the program causes a computer to perform the methods performed by the terminal or the network device in the embodiments of the present application.

The embodiment of the application also provides a computer program. The computer program may be applied to a terminal or a network device provided in embodiments of the present application, and cause a computer to perform the methods performed by the terminal or the network device in the embodiments of the present application.

It should be understood that in the embodiments of the present application, "B corresponding to a" means that B is associated with a, from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

It should be understood that the term "and/or" in the embodiments of the present application is merely an association relationship describing the 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.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other forms.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disk (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of communication, comprising:

the terminal performs uplink transmission in a first transmission time window;

the uplink transmission time length is smaller than or equal to the time length of the first transmission time window, the maximum transmission power of the uplink transmission is larger than the limit of the power level of the terminal on the maximum transmission power, and the average value of the uplink transmission power in the first transmission time window is smaller than or equal to the limit of the power level of the terminal on the maximum transmission power.
The method of claim 1, wherein the maximum transmit power of the uplink transmission is a hardware-supported maximum transmit power of the terminal.
The method according to claim 1 or 2, wherein the duration of the first transmission time window is less than or equal to the measured duration of the power class of the terminal.
The method according to claim 1 or 2, wherein the duration of the first transmission time window is greater than the measured duration of the power level of the terminal and less than or equal to the measured duration of the absorption rate SAR of the terminal.
The method according to any one of claims 1-4, wherein a plurality of transmission powers are used for the uplink transmission during a transmission period of the uplink transmission, and power values of at least two of the plurality of transmission powers are unequal.
The method of any one of claims 1-5, wherein the uplink transmission by the terminal in the first transmission time window includes:

and the terminal performs the uplink transmission on a single frequency band through a plurality of antennas in the first transmission time window.
The method of any one of claims 1-5, wherein the uplink transmission by the terminal in the first transmission time window includes:

and the terminal performs the uplink transmission through a plurality of frequency bands in the first transmission time window.
The method of any of claims 1-7, wherein before the terminal performs uplink transmission in the first transmission time window, the method further comprises:

The terminal sends a power enhancement request to network equipment, wherein the power enhancement request is used for requesting the uplink transmission by using the maximum transmission power of the uplink transmission;

and the terminal receives power enhancement enabling information sent by the network equipment, wherein the power enhancement enabling information is used for enabling the terminal to use the maximum transmission power of the uplink transmission to carry out the uplink transmission.
The method of claim 8, wherein the power boost request carries power boost capability information indicating a maximum transmit power for the uplink transmission.
The method of claim 8 or 9, wherein the method further comprises:

and the terminal receives power enhancement disabling information sent by the network equipment, wherein the power enhancement disabling information is used for disabling the terminal to carry out the uplink transmission by using the maximum transmission power of the uplink transmission.
The method according to any one of claims 1-10, wherein a first total transmission power of the terminal is less than or equal to a second total transmission power of the terminal, the first total transmission power being a total amount of transmission power of the terminal for uplink transmission in the first time window, and the second total transmission power being a total amount of transmission power of the terminal for uplink transmission using a maximum transmission power corresponding to the power level in a measurement period of the power level.
The method of any one of claims 11, wherein the terminal further comprises, prior to uplink transmission in the first transmission time window:

the terminal determines the duty ratio of the transmitting duration in the measuring duration of the power level of the terminal based on the second total transmitting power;

the terminal determines the transmission duration based on the duty ratio of the transmission duration in the measurement duration of the power level of the terminal and the duration of the first transmission time window.
A terminal, comprising:

a transmitting unit, configured to perform uplink transmission in a first transmission time window;

the uplink transmission time length is smaller than or equal to the time length of the first transmission time window, the maximum transmission power of the uplink transmission is larger than the limit of the power level of the terminal on the maximum transmission power, and the average value of the uplink transmission power in the first transmission time window is smaller than or equal to the limit of the power level of the terminal on the maximum transmission power.
The terminal of claim 13, wherein the maximum transmit power of the uplink transmission is a hardware-supported maximum transmit power of the terminal.
The terminal of claim 13 or 14, wherein the duration of the first transmission time window is less than or equal to a measured duration of the power class of the terminal.
The terminal of claim 13 or 14, wherein the duration of the first transmission time window is greater than a measured duration of the power level of the terminal and less than or equal to a measured duration of the absorption rate SAR of the terminal.
The terminal according to any of claims 13-16, wherein a plurality of transmission powers are used for the uplink transmission during a transmission period of the uplink transmission, and power values of at least two of the plurality of transmission powers are unequal.
The terminal according to any of the claims 13-17, wherein the transmitting unit is further configured to:

and in the first transmission time window, the uplink transmission is performed on a single frequency band through a plurality of antennas.
The terminal according to any of the claims 13-17, wherein the transmitting unit is further configured to:

and in the first transmission time window, the uplink transmission is carried out through a plurality of frequency bands.
The terminal according to any of the claims 13-19, characterized in that,

The transmitting unit is configured to send a power enhancement request to a network device, where the power enhancement request is used to request the uplink transmission to be performed using the maximum transmission power of the uplink transmission;

and the receiving unit is used for receiving the power enhancement enabling information sent by the network equipment, wherein the power enhancement enabling information is used for enabling the terminal to use the maximum transmission power of the uplink transmission to carry out the uplink transmission.
The terminal of claim 20, wherein the power boost request carries power boost capability information indicating a maximum transmit power for the uplink transmission.
The terminal of claim 20 or 21, wherein the receiving unit is further configured to:

and receiving power enhancement disabling information sent by the network equipment, wherein the power enhancement disabling information is used for disabling the terminal to perform the uplink transmission by using the maximum transmission power of the uplink transmission.
The terminal according to any of claims 13-22, wherein a first total transmission power of the terminal is less than or equal to a second total transmission power of the terminal, the first total transmission power being a total amount of transmission power of the terminal for uplink transmission in the first time window, the second total transmission power being a total amount of transmission power of the terminal for uplink transmission using a maximum transmission power corresponding to the power level in a measurement period of the power level.
The terminal of claim 23, wherein the terminal further comprises:

a determining unit, configured to determine, based on the second total transmission power, a duty ratio of the transmission duration in a measurement duration of a power class of the terminal; and

and determining the transmitting duration based on the duty ratio of the transmitting duration in the measuring duration of the power level of the terminal and the duration of the first transmitting time window.
A terminal comprising a memory for storing a program and a processor for invoking the program in the memory to perform the method of any of claims 1-12.
An apparatus comprising a processor configured to invoke a program from memory to perform the method of any of claims 1-12.
A chip comprising a processor for calling a program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1-12.
A computer-readable storage medium, characterized in that a program is stored thereon, which program causes a computer to perform the method according to any of claims 1-12.
A computer program product comprising a program for causing a computer to perform the method of any one of claims 1-12.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1-12.