CN112655250B

CN112655250B - Wireless communication method, terminal equipment and network equipment

Info

Publication number: CN112655250B
Application number: CN201880097244.2A
Authority: CN
Inventors: 唐海
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2023-06-27
Anticipated expiration: 2038-10-31
Also published as: WO2020087353A1; CN112655250A

Abstract

A method for wireless communication, a terminal device and a network device, capable of avoiding SAR exceeding of the terminal device, the method being applied to the terminal device, the terminal device establishing a connection with a first network and a second network simultaneously, the method comprising: the terminal equipment determines a corresponding maximum equivalent uplink duty ratio when the total transmission power of the first network and the second network is the maximum transmission power, wherein when the maximum equivalent uplink duty ratio is reached, the specific absorption ratio SAR of the electromagnetic waves of the terminal equipment reaches a preset value; and the terminal equipment reports the maximum equivalent uplink duty ratio to network equipment.

Description

Wireless communication method, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the field of communication, in particular to a wireless communication method, terminal equipment and network equipment.

Background

The specific absorption ratio (Specific Absorption Rate, SAR) of electromagnetic waves is used for measuring the electromagnetic radiation intensity of the terminal equipment to the human body, and the SAR of the terminal equipment cannot generally exceed the specified index requirements.

For terminal equipment supporting multiple standards at the same time, for example, supporting a long term evolution (Long Term Evolution, LTE) standard and a New Radio (NR) standard, the LTE standard and the NR standard of the terminal equipment can be in a working state at the same time, and the LTE standard and the NR standard can be designed by adopting a common antenna, i.e., the LTE standard and the NR standard can work in the same frequency band, so that the contribution to the SAR of the terminal equipment is symmetrical, and in this case, how to avoid the SAR exceeding of the terminal equipment is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, which are beneficial to avoiding the problem of SAR exceeding of the terminal equipment.

In a first aspect, a method of wireless communication is provided, applied to a terminal device, where the terminal device establishes a connection with a first network and a second network at the same time, the method including: the terminal equipment determines a corresponding maximum equivalent uplink duty ratio when the total transmission power of the first network and the second network is the maximum transmission power, wherein when the maximum equivalent uplink duty ratio is reached, the specific absorption ratio SAR of the electromagnetic waves of the terminal equipment reaches a preset value; and the terminal equipment reports the maximum equivalent uplink duty ratio to network equipment.

In a second aspect, a method of wireless communication is provided, applied to a network device that simultaneously provides services for a first network and a second network, the method comprising: the network equipment receives the maximum equivalent uplink duty ratio reported by the terminal equipment, wherein the maximum equivalent uplink duty ratio is the equivalent uplink duty ratio corresponding to the time when the specific absorption ratio SAR of the electromagnetic waves of the terminal equipment reaches a preset value when the total transmission power of the first network and the second network is the maximum transmission power; and the network equipment controls the uplink duty ratio of the first network and/or the uplink duty ratio of the second network so that the equivalent uplink duty ratio of the terminal equipment is smaller than or equal to the maximum equivalent uplink duty ratio.

In a third aspect, a terminal device is provided for performing the method of the first aspect or any possible implementation of the first aspect. In particular, the terminal device comprises means for performing the method of the first aspect or any of the possible implementations of the first aspect.

In a fourth aspect, a network device is provided for performing the method of the second aspect or any possible implementation of the second aspect. In particular, the network device comprises means for performing the method of the second aspect or any of the possible implementations of the second aspect.

In a fifth aspect, there is provided a terminal device comprising: including a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method in the first aspect or various implementation manners thereof.

In a sixth aspect, there is provided a network device comprising: including a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect or implementations thereof described above.

A seventh aspect provides a chip for implementing the method of any one of the first to second aspects or each implementation thereof.

Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method as in any one of the first to second aspects or implementations thereof described above.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the method of any one of the above-described first to second aspects or implementations thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

Based on the technical scheme, the terminal equipment supporting multiple systems can determine the corresponding maximum equivalent uplink duty ratio when the total transmitting power of the first network and the second network is the maximum transmitting power, wherein when the maximum equivalent uplink duty ratio is reached, the specific absorption ratio SAR of the electromagnetic waves of the terminal equipment reaches a preset value, and the maximum equivalent uplink duty ratio can be further reported to the network equipment, so that the network equipment can control the equivalent uplink duty ratio of the terminal equipment to be smaller than or equal to the maximum equivalent uplink duty ratio when the uplink duty ratio of the first network and the second network is scheduled, and the problem of SAR exceeding standard of the terminal equipment can be avoided.

Drawings

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application.

Fig. 2 is a schematic diagram of a method of wireless communication provided in an embodiment of the present application.

Fig. 3 is a schematic diagram of a method of wireless communication provided in another embodiment of the present application.

Fig. 4 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 5 is a schematic block diagram of a network device provided in an embodiment of the present application.

Fig. 6 is a schematic block diagram of a communication device provided in another embodiment of the present application.

Fig. 7 is a schematic block diagram of a chip provided in an embodiment of the present application.

Fig. 8 is a schematic block diagram of a communication system provided in an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) systems, general packet radio service (General Packet Radio Service, GPRS), 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), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication systems, or 5G systems, and the like.

Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present invention.

As shown in fig. 1, the terminal device 110 is connected to a first network device 130 in a first communication system and a second network device 120 in a second communication system, for example, the first network device 130 is a network device in long term evolution (Long Term Evolution, LTE), and the second network device 120 is a network device in a New Radio (NR).

Wherein the first network device 130 and the second network device 120 may include a plurality of cells.

It should be appreciated that FIG. 1 is an example of a scenario of an embodiment of the present invention, and that the embodiment of the present invention is not limited to that shown in FIG. 1.

For example, a communication system to which embodiments of the present invention are adapted may include at least a plurality of network devices under the first communication system and/or a plurality of network devices under the second communication system.

For another example, the first communication system and the second communication system in the embodiment of the present invention are different, but specific categories of the first communication system and the second communication system are not limited. For example, the first communication system and the second communication system may be various communication systems, such as: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), and the like.

The network device in the embodiments of the present application may refer to any entity on the network side that is used to send or receive signals. For example, it may be a user equipment for Machine Type Communication (MTC), a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a base station device in 5G network, etc.

Terminal device 110 may be any terminal device. In particular, the terminal device may communicate with one or more Core networks (Core networks) via a radio access Network (Radio Access Network, RAN), which may also be referred to as an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. For example, it may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, and a terminal device in a 5G network, etc.

Optionally, the 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 terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: 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.

In a New wireless (NR) communication system, a Dual Connection (DC) scenario may include (LTE NR DC, EN-DC), (NR trilte DC, NE-DC), (5GC eLTE NR DC,5GC-EN-DC), and NR DC, where EN-DC is a packet core evolution (Evolved Packet Core, EPC) core network with a long term evolution (Long Term Evolution, LTE) Node as a master Node (MasterNode, MN) and an NR Node as a Slave Node (Slave Node, SN). NR in NE-DC is used as MN, evolved long term evolution (Evolved Long Term Evolution, eLTE) is used as SN, and a fifth Generation mobile communication technology Core network (5-Generation Core,5 GC) is connected. In 5GC-EN-DC, eLTE is used as MN, NR is used as SN, and 5GC is connected. In NR DC, NR is as MN, NR is as SN, and 5GC is connected.

In the embodiment of the application, the terminal device may be connected to a plurality of different networks at the same time, for example, in an EN-DC scenario, the terminal device connects to an lte network and an NR network at the same time, and the terminal device in this scenario may be referred to as an EN-DC terminal or an NE-DC terminal.

Fig. 2 is a schematic flowchart of a method for wireless communication according to an embodiment of the present application, where the method 200 may be performed by a terminal device, where the terminal device connects a first network and a second network at the same time, and as shown in fig. 2, the method 200 includes the following:

s210, the terminal equipment determines a corresponding maximum equivalent uplink duty ratio when the total transmission power of the first network and the second network is the maximum transmission power, wherein when the maximum equivalent uplink duty ratio is reached, the specific absorption ratio SAR of the electromagnetic waves of the terminal equipment reaches a preset value;

and S220, the terminal equipment reports the maximum equivalent uplink duty ratio to network equipment.

Alternatively, in the embodiment of the present application, the predetermined value of the SAR may be a value specified by a standard, and the SAR may be preset on the terminal device, for indicating the requirement of the electromagnetic radiation intensity of the terminal device.

Optionally, in the embodiment of the present application, the first network and the second network may share a network device (specifically, an access network device), that is, the network device may provide services for the first network and the second network at the same time, where the network device may learn uplink duty ratios of the first network and the second network; or the network devices (specifically, the access network device) of the first network and the second network may be independent, in this case, the terminal device may obtain the uplink duty ratio of the first network, and further may report the uplink duty ratio of the first network to the network device of the second network, or vice versa, which is not limited in the embodiment of the present application.

Optionally, in this embodiment of the present application, the first network is a primary network, the second network is a secondary network, that is, a connection between the terminal device and the first network is a primary connection, and a connection between the terminal device and the second network is a secondary connection.

By way of example and not limitation, the first network may be an LTE network and the second network may be an NR network, in which case the terminal device may be referred to as an EN-DC terminal; alternatively, the first network may be an NR network, and the second network may be an LTE network, in which case the terminal device may be referred to as a NE-DC terminal.

Alternatively, in the embodiment of the present application, the LTE network and the NR network may adopt a common antenna design, that is, the LTE network and the NR network may operate in the same frequency band, so SAR brought by the LTE network and the NR network has equivalence, that is, SAR values brought by the same transmit power of the LTE network and the NR network are the same. The SAR of the terminal equipment is the sum of the SAR of the LTE network and the NR network, and the SAR is affected by the transmission power and the uplink duty ratio, in general, the larger the transmission power is, the larger the uplink duty ratio is, and the larger the SAR is, so that the SAR of the terminal equipment can be adjusted by adjusting the transmission power or the uplink duty ratio.

Specifically, in the embodiment of the present application, the terminal device may determine a maximum equivalent uplink duty ratio when a total transmission power of the LTE network and the NR network is a maximum transmission power, and specifically, may set the transmission power of the LTE network to be a first transmission power, and set the transmission power of the NR network to be a second transmission power, where a sum of the first transmission power and the second transmission power is the maximum transmission power; further, the maximum value of the local radiation electric field intensity of the terminal device to the human body under the above transmitting power can be measured and is marked as E ₁ If the maximum electric field strength corresponding to the SAR index specified by the standard is E ₀ The terminal device can determine the maximum equivalent uplink duty ratio as E ₀ /E ₁ That is, the SAR of the terminal device reaches a predetermined value when the equivalent uplink duty cycle of the terminal device reaches the maximum equivalent uplink duty cycle. Further, the terminal device may report the maximum equivalent uplink duty cycle to the network device, so that the network device may control the uplink duty cycle of the LTE network or the NR network, so that the equivalent uplink duty cycle of the terminal device does not exceed the maximum equivalent uplink duty cycle,therefore, the problem of SAR exceeding of the terminal equipment can be avoided.

It should be understood that, in this embodiment of the present application, when determining the maximum equivalent uplink duty ratio, the terminal device may also adjust the first transmit power and the second transmit power, as long as the sum of the two is guaranteed to be the maximum transmit power, and then test the maximum value of the local radiation electric field intensity of the terminal device on the human body under the condition of different first transmit power and second transmit power, and select the maximum value of the local radiation electric field intensity corresponding to the combination of the different first transmit power and second transmit power as the E1 used for calculating the maximum equivalent uplink duty ratio.

Let the total transmit power be P _max May be at a first transmit power of P _max And/2, the second transmitting power is P _max And/2, testing the maximum value of the local radiation electric field intensity of the terminal equipment to the human body, and marking as E ₁₁ May also be 2P at the first transmit power _max And/3, the second transmitting power is P _max And/3, testing the maximum value of the local radiation electric field intensity of the terminal equipment to the human body, and marking as E ₁₂ Or can be 3P at the first transmitting power _max And/4, the second transmitting power is P _max And/4, testing the maximum value of the local radiation electric field intensity of the terminal equipment to the human body, and marking as E ₁₃ Further, can be at E ₁₁ 、E ₁₂ And E is ₁₃ As E1 for determining the maximum equivalent uplink duty cycle.

It should be appreciated that in the embodiments of the present application, because the LTE network and the NR network may employ a common antenna design, the contributions to the SAR values by the LTE network and the NR network are typically the same at the same transmit power, that is, E ₁₁ 、E ₁₂ And E is ₁₃ In the actual test, only one case can be tested, and the terminal equipment only needs to test the maximum value of the local radiation electric field intensity of the human body. For example, in the case of only testing that the first transmission power and the second transmission power are 1/2 of the maximum transmission power, the maximum value of the local radiation electric field intensity of the terminal device to the human body is used as the maximum equivalent of calculationAnd E1 of the uplink duty ratio.

In this embodiment of the present application, the uplink-downlink ratio of the LTE network is generally configured statically or semi-statically, for example, 60%,50%,40%,30%,25% or 10%, etc., so that the SAR of the LTE network is mainly affected by the transmit power, while the uplink-downlink ratio of the NR network is generally configured semi-statically or dynamically, that is, the uplink-downlink ratio of the terminal device on the LTE network side is generally unchanged, while the uplink-downlink ratio on the NR network side can be dynamically adjusted, and the window length of the uplink-downlink ratio can be any value, so that the SAR value of the NR network is affected by the transmit power and the uplink-downlink ratio.

In the embodiment of the present application, when a terminal device accesses an LTE network, the terminal device may learn uplink configuration information of the LTE network according to a system broadcast message of the LTE network, where the uplink configuration information includes uplink and downlink proportions of the LTE network, and may also be understood as an uplink duty ratio of the LTE network.

In the embodiment of the present application, the terminal device may determine a current equivalent uplink duty ratio of the terminal device, for example, the terminal device may determine the current equivalent uplink duty ratio of the terminal device according to the current uplink duty ratios of the first network and the second network, in combination with the current transmission power of the first network and the second network. As can be seen from the above description, the magnitude of the SAR value of the terminal device is proportional to the transmission power and the uplink duty ratio, the larger the transmission power is, the larger the SAR is, the larger the uplink duty ratio is, and if the current equivalent uplink duty ratio of the terminal device is greater than the maximum equivalent uplink duty ratio, for the terminal device, the current equivalent uplink duty ratio of the terminal device can be reduced by reducing the transmission power of the first network and/or the transmission power of the second network, so that the current equivalent uplink duty ratio of the terminal device is less than or equal to the maximum equivalent uplink duty ratio, thereby achieving the purpose of avoiding the SAR of the terminal device from exceeding the standard; for the network device, the current equivalent uplink duty ratio of the terminal device can be reduced by reducing the uplink duty ratio of the first network and/or the uplink duty ratio of the second network, so that the current equivalent uplink duty ratio is smaller than or equal to the maximum equivalent uplink duty ratio, thereby achieving the purpose of avoiding the SAR exceeding standard of the terminal device.

In the following, a specific implementation manner of the terminal device to avoid SAR standard exceeding is described in connection with a specific embodiment.

In the embodiment of the present application, the length of the scheduling window of the NR network is window, the network device schedules the uplink duty ratio of the NR network by using the window length as a unit, and it is assumed that the transmission power in the window of the NR network is P ₂ Wherein P is ₂ Is a linear power value, and the uplink duty ratio is D _N2 . The transmission power of the LTE network is P ₁ Wherein P is ₁ Also linear power value, up-link duty ratio is D _N1 . Assuming that the maximum transmission power of the terminal equipment is P _max The equivalent uplink duty ratio D of the terminal device in the window can be determined according to the following formula _en 。

P ₁ *D _N1 +P ₂ *D _N2 ＝P _max *D _en Formula (1)

P ₁ +P ₂ ＝P _max Formula (2)

From the above formula (1) and formula (2):

D _en ＝D _N1 *P ₁ /P _max +D _N2 *P ₂ /P _max formula (3)

In order to avoid SAR of the terminal equipment exceeding the standard, the equivalent uplink duty cycle D of the terminal equipment _en Requiring less than or equal to the maximum equivalent uplink duty cycle D _max D is _N1 *P ₁ /P _max +D _N2 *P ₂ /P _max ≤D _max 。

Since the uplink duty cycle of the LTE network is generally statically configured or semi-statically configured, i.e. the uplink duty cycle of the LTE network is generally a fixed value, the uplink duty cycle of the NR network may be controlled such that the equivalent uplink duty cycle of the terminal device is less than or equal to the maximum equivalent uplink duty cycle, i.e. the uplink duty cycle of the second network needs to satisfy the following conditions:

D _N2 ≤[D _max -D _N1 *(P ₁ /P _max )]/(1-P ₁ /P _max ) Formula (4)

Therefore, to avoid the problem of SAR overdriving of the terminal equipmentWhen the network device schedules the uplink duty ratio of the NR network, it needs to control it to satisfy equation (4), that is, the maximum uplink duty ratio of the NR network is [ D ] _max -D _N1 *(P ₁ /P _max )]/(1-P ₁ /P _max )。

Optionally, in a specific embodiment, if the transmission power of the first network and the transmission power of the second network are both 1/2 of the maximum transmission power, i.e. P ₁ ＝P ₂ ＝P _max 2, e.g. P ₁ And P ₂ Are all 23dBm, P _max 26dBm, the maximum upstream duty cycle of the second network may be reduced to D _N2-max ＝2D _max -D _N1 。

Optionally, in the embodiment of the present application, when the uplink duty ratio of the NR network is greater than the maximum duty ratio of the NR network, in this case, the terminal device has a risk of SAR exceeding, so the terminal device may reduce the total transmission power of the LTE network and the NR network, or alternatively, the terminal device may not send uplink data on a time unit capable of uplink transmission.

As an alternative embodiment, if the connection of the terminal device to the LTE network is a primary connection, the terminal device preferentially reduces the transmission power of the NR network. Alternatively, in some cases, the terminal device may disconnect from the NR network, and only keep the connection with the LTE network, for example, if the transmission power of the NR network is reduced by more than a certain threshold (e.g., 3 dB), in which case, the signal of the NR network may be considered to be weak enough to support the communication connection on the NR network side of the terminal device, so the terminal device may disconnect from the NR network and only keep the connection with the LTE network.

Alternatively, as another alternative embodiment, if the connection between the terminal device and the NR network is a primary connection, the terminal device may preferentially reduce the transmission power of the LTE network, so as to reduce SAR of the terminal device. Similarly, the terminal device may disconnect from the LTE network and only remain connected to the NR network, for example, if the transmission power of the LTE network is reduced by more than a certain threshold (e.g., 3 dB), in which case the signal of the LTE network may be considered weak enough to support the communication connection of the terminal device on the NR network side, so that the terminal device may disconnect from the LTE network and only remain connected to the NR network

Alternatively, as a further embodiment, if the uplink duty cycle of the NR network is greater than a certain threshold, the threshold is greater than the maximum uplink duty cycle of the NR network, in which case, even if the transmission power of the NR network is considered to be reduced, the SAR of the terminal device may be considered to be at risk of exceeding the standard, so the terminal device may choose to disconnect from the NR network and only remain connected to the LTE network.

Optionally, in a specific embodiment, the terminal device reduces the transmission power of the first network and/or the second network, so that the reduced transmission power of the first network and the second network meets the following conditions: p (P) ₁ ×D _N1 +P ₂ ×D _N2 ≤P _max ×D _max Wherein P is ₁ ，P ₂ ，P _max All are linear power values.

That is, in the embodiment of the present application, when the SAR of the terminal device has a risk of exceeding the standard, the terminal device may choose not to use or reduce the use of the auxiliary network for data transmission, so that the contribution of the auxiliary network to the SAR of the terminal device can be reduced.

Similarly, for the network device, when the SAR of the terminal device is at risk of exceeding the standard, the network device may choose to reduce the uplink duty cycle of the secondary network, so that the contribution of the secondary network to the SAR of the terminal device can be reduced.

Optionally, in the embodiment of the present application, the uplink duty ratio of the NR network is scheduled by a network device or is autonomously determined by the terminal device. That is, the uplink transmission of the terminal device may be uplink transmission scheduled based on the network device, or may be uplink transmission initiated autonomously by the terminal device.

It should be noted that, in the embodiment of the present application, the uplink duty ratio may be considered as a proportion of time domain resources that can be used for uplink transmission in one time unit, alternatively, one time unit may be one or more subframes, one or more slots, or one or more micro slots, etc., which is not limited in this embodiment of the present application. Assuming that there are 10 slots in a subframe, if 3 slots of the 10 slots are available for uplink transmission and 7 slots are available for downlink transmission, the uplink duty cycle may be 30%.

It should be understood that, in the embodiment of the present application, similar indexes such as uplink-downlink ratio (i.e. the ratio of the resources used for uplink transmission to the resources used for downlink transmission in one time unit) may also be used to determine whether the SAR of the terminal device needs to be reduced, which is not limited in the embodiment of the present application.

The method of wireless communication according to the embodiment of the present application is described in detail above in connection with fig. 2 from the perspective of the terminal device, and hereinafter in connection with fig. 3, the method of wireless communication according to the embodiment of the present application is described in detail from the perspective of the network device, it being understood that the description on the network device side and the description on the terminal device side correspond to each other, and similar descriptions may refer to the foregoing embodiments.

Fig. 3 is a method of wireless communication according to another embodiment of the present application, the method 300 may be performed by a network device in the communication system shown in fig. 1, the network device may provide services to both a first network and a second network, as shown in fig. 3, the method 300 may include:

s310, the network equipment receives the maximum equivalent uplink duty ratio reported by the terminal equipment, wherein the maximum equivalent uplink duty ratio is the equivalent uplink duty ratio corresponding to the time when the specific absorption ratio SAR of the electromagnetic waves of the terminal equipment reaches a preset value when the total transmission power of the first network and the second network is the maximum transmission power;

S320, the network device controls the uplink duty ratio of the first network and/or the uplink duty ratio of the second network, so that the equivalent uplink duty ratio of the terminal device is smaller than or equal to the maximum equivalent uplink duty ratio.

The determining manner of the maximum equivalent uplink duty ratio may refer to the related description of the foregoing embodiment, which is not repeated herein.

When the network device receives the maximum equivalent uplink duty ratio reported by the terminal device, the network device can control the uplink duty ratio of the first network and/or the uplink duty ratio of the second network so that the equivalent uplink duty ratio of the terminal device is smaller than or equal to the maximum equivalent uplink duty ratio, thereby avoiding the problem of SAR exceeding standard of the terminal device.

It should be understood that, here, the determination of the equivalent uplink duty ratio of the terminal device may refer to the equivalent uplink duty ratio D of the terminal device in the foregoing embodiment _en In other words, the network device may determine the equivalent uplink duty ratio of the terminal device in a similar manner, and further control the uplink duty ratio of the first network and/or the uplink duty ratio of the second network so that the equivalent uplink duty ratio of the terminal device is less than or equal to the maximum equivalent uplink duty ratio, which is not described herein for brevity.

As can be seen from the formula (3), the equivalent uplink duty ratio of the terminal device is proportional to the uplink duty ratio and the transmitting power of the first network, and the uplink duty ratio and the transmitting power of the second network, so that the purpose of reducing the equivalent uplink duty ratio of the terminal device can be achieved by reducing at least one of the uplink duty ratio and the transmitting power of the first network, and the uplink duty ratio and the transmitting power of the second network, and further the SAR of the terminal device can be reduced.

Hereinafter, the first network is taken as an LTE network, and the second network is taken as an NR network, but the embodiment of the present application is not limited thereto.

Alternatively, in some specific cases, since the uplink duty cycle of the LTE network is generally statically configured or semi-statically configured, the network device may reduce the equivalent uplink duty cycle of the terminal device by adjusting the uplink duty cycle of the NR network, specifically, the uplink duty cycle of the NR network needs to satisfy the foregoing equation (4). Therefore, to avoid the problem of SAR exceeding of the terminal device, the network device needs to control it to satisfy equation (4) when scheduling the uplink duty cycle of the NR network.

Optionally, in a specific embodiment, if the transmission power of the first network and the transmission power of the second network are both 1 +_ of the maximum transmission power 2, P ₁ ＝P ₂ ＝P _max 2, e.g. P ₁ And P ₂ Are all 23dBm, P _max 26dBm, the maximum upstream duty cycle of the second network may be reduced to D _N2-max ＝2D _max -D _N1 。

Optionally, the first network is a long term evolution LTE network, the second network is a new wireless NR network, and the first network and the second network operate in the same frequency band.

The method embodiments of the present application are described in detail above with reference to fig. 2 to 3, and the apparatus embodiments of the present application are described in detail below with reference to fig. 4 to 8, it being understood that the apparatus embodiments and the method embodiments correspond to each other, and similar descriptions may refer to the method embodiments.

Fig. 4 is a schematic block diagram of a terminal device provided in an embodiment of the present application, where the terminal device 400 establishes a connection with a first network and a second network at the same time, and as shown in fig. 4, the terminal device 400 includes:

a processing module 410, configured to determine a corresponding maximum equivalent uplink duty ratio when the total transmission power of the first network and the second network is the maximum transmission power, where when the maximum equivalent uplink duty ratio is reached, an electromagnetic wave specific absorption ratio SAR of the terminal device reaches a predetermined value;

and the communication module 420 is configured to report the maximum equivalent uplink duty cycle to a network device.

Optionally, in some embodiments, the processing module 410 is further configured to:

and when the uplink duty ratio of the second network scheduled by the network device is larger than the maximum uplink duty ratio of the second network, reducing the total transmitting power of the first network and the second network so that the SAR of the terminal device is smaller than or equal to the preset value, wherein the maximum uplink duty ratio of the second network is determined according to the maximum equivalent uplink duty ratio.

Optionally, in some embodiments, the processing module 410 is specifically configured to:

lowering the first network and/or the second networkThe transmission power of the network is such that the reduced transmission power of the first network and the second network satisfies the following condition: p (P) ₁ ×D _N1 +P ₂ ×D _N2 ≤P _max ×D _max

Wherein the D is _N1 For the uplink duty cycle of the first network, the D _N2 For the uplink duty cycle of the second network, the D _max For the maximum equivalent uplink duty ratio, the P1 is the power value of the transmission power of the first network, and ₂ for the power value of the transmission power of the second network, the P _max Is the power value of the maximum transmitting power.

And preferentially reducing the transmission power of the second network when the total transmission power is reduced.

disconnecting from the second network, only maintaining the connection with the first network.

and determining the maximum uplink duty ratio of the second network according to the uplink duty ratio of the first network and the maximum equivalent uplink duty ratio.

and determining the maximum uplink duty ratio of the second network according to the uplink duty ratio and the transmitting power of the first network and combining the maximum transmitting power and the maximum equivalent uplink duty ratio.

Optionally, in some embodiments, the processing module 410 is specifically configured to: determining a maximum uplink duty cycle of the second network according to the following formula: d (D) _N2-max ＝[D _max -D _N1 *(P ₁ /P _max )]/(1-P ₁ /P _max )

Wherein the D is _N2-max For the maximum upstream duty cycle of the second networkThe D is _N1 For the current upstream duty cycle of the first network, the D _max For the maximum equivalent uplink duty cycle, the P ₁ For the power value of the current transmission power of the first network, the P _max Is the power value of the maximum transmitting power.

Optionally, in some embodiments, if the transmission power of the first network and the transmission power of the second network are both 1/2 of the maximum transmission power, the maximum uplink duty cycle D of the second network _N2-max ＝2D _max -D _N1 。

setting the transmission power of the first network as a first transmission power, and setting the transmission power of the second network as a second transmission power, wherein the sum of the first transmission power and the second transmission power is the maximum transmission power; measuring the maximum value of the radiation electric field intensity of the terminal equipment to the human body under the first transmission power and the second transmission power;

and determining the ratio of the maximum electric field intensity to the maximum value of the radiation electric field intensity as the maximum equivalent uplink duty ratio, wherein the maximum electric field intensity is the electric field intensity corresponding to the preset value.

Optionally, in some embodiments, the first network is a long term evolution LTE network, the second network is a new wireless NR network, and the first network and the second network operate in the same frequency band.

Fig. 5 is a schematic block diagram of a network device provided in an embodiment of the present application, where the network device 500 provides services for both a first network and a second network, and the network device 500 includes:

a communication module 510, configured to receive a maximum equivalent uplink duty cycle reported by a terminal device, where the maximum equivalent uplink duty cycle is an equivalent uplink duty cycle corresponding to when a specific absorption ratio SAR of electromagnetic waves of the terminal device reaches a predetermined value when total transmission power of the first network and the second network is the maximum transmission power;

and a processing module 520, configured to control an uplink duty cycle of the first network and/or an uplink duty cycle of the second network, so that an equivalent uplink duty cycle of the terminal device is less than or equal to the maximum equivalent uplink duty cycle.

Optionally, in some embodiments, the processing module 520 is specifically configured to:

determining the maximum uplink duty ratio of the second network according to the current uplink duty ratio of the first network and the maximum equivalent uplink duty ratio; and controlling the uplink duty ratio of the second network not to exceed the maximum uplink duty ratio of the second network.

Optionally, in some embodiments, the processing module 520 is further configured to:

Optionally, in some embodiments, the processing module 520 is specifically configured to: determining a maximum uplink duty cycle of the second network according to the following formula: d (D) _N2-max ＝[D _max -D _N1 *(P ₁ /P _max )]/(1-P ₁ /P _max )

Wherein the D is _N2-max For the maximum upstream duty cycle of the second network, the D _N1 For the current upstream duty cycle of the first network, the D _max For the maximum equivalent uplink duty cycle, the P ₁ For the power value of the current transmission power of the first network, the P _max Is the power value of the maximum transmitting power.

Optionally, in some embodiments, the processing module 520 is further configured to: and determining the equivalent uplink duty ratio of the terminal equipment according to the following formula: d (D) _en ＝D _N1 *P ₁ /P _max +D _N2 *P ₂ /P _max

Wherein the D is _en For the equivalent uplink duty ratio of the terminal equipment, the D _N1 For the current upstream duty cycle of the first network, the D _N2 For the current upstream duty cycle of the second network, the P ₁ For the power value of the current transmission power of the first network, the P ₂ For the power value of the current transmission power of the second network, the P _max Is the power value of the maximum transmitting power.

Fig. 6 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device 600 shown in fig. 6 comprises a processor 610, from which the processor 610 may call and run a computer program to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 6, the communication device 600 may also include a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the methods in embodiments of the present application.

The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

Optionally, as shown in fig. 6, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

The transceiver 630 may include a transmitter and a receiver, among others. Transceiver 630 may further include antennas, the number of which may be one or more.

Optionally, the communication device 600 may be specifically a terminal device in the embodiment of the present application, and the communication device 600 may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Fig. 7 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in fig. 7 includes a processor 710, and the processor 710 may call and run a computer program from a memory to implement the methods in the embodiments of the present application.

Optionally, as shown in fig. 7, chip 700 may also include memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the methods in embodiments of the present application.

Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

Optionally, the chip 700 may also include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip may be applied to a terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by a transmitting node in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

Fig. 8 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in fig. 8, the communication system 900 includes a terminal device 910 and a network device 920.

The terminal device 910 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a 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. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which is not described herein for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, where the computer program when run on a computer causes the computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, and for brevity, will not be described herein.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

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 form.

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.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

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

1. A method of wireless communication applied to a terminal device that establishes a connection with a first network and a second network simultaneously, the method comprising:

the terminal equipment determines a corresponding maximum equivalent uplink duty ratio when the total transmission power of the first network and the second network is the maximum transmission power, wherein when the maximum equivalent uplink duty ratio is reached, the specific absorption ratio SAR of the electromagnetic waves of the terminal equipment reaches a preset value;

the terminal equipment reports the maximum equivalent uplink duty ratio to network equipment;

wherein the method further comprises:

when the uplink duty ratio of the second network scheduled by the network device is greater than the maximum uplink duty ratio of the second network, the terminal device reduces the total transmitting power of the first network and the second network so that the SAR of the terminal device is smaller than or equal to the preset value, wherein the maximum uplink duty ratio of the second network is determined according to the maximum equivalent uplink duty ratio;

Wherein the terminal device reduces the total transmit power of the first network and the second network, comprising:

the terminal equipment preferentially reduces the transmitting power of the second network when reducing the total transmitting power;

the first network is a Long Term Evolution (LTE) network, the second network is a new wireless NR network, and the first network and the second network work in the same frequency band.

2. The method of claim 1, wherein the terminal device reduces the total transmit power of the first network and the second network, further comprising:

the terminal equipment reduces the transmitting power of the first network and the second network so that the reduced transmitting power of the first network and the second network meets the following conditions:

P ₁ ×D _N1 +P ₂ ×D _N2 ≤P _max ×D _max

wherein the D is _N1 For the uplink duty cycle of the first network, the D _N2 For the uplink duty cycle of the second network, the D _max For the maximum equivalent uplink duty cycle, the P ₁ For the power value of the transmission power of the first network, the P ₂ For the power value of the transmission power of the second network, the P _max Is the power value of the maximum transmitting power.

3. A method according to claim 1 or 2, wherein the terminal device, when reducing the total transmit power, preferentially reduces the transmit power of the second network, comprising:

And the terminal equipment disconnects the connection with the second network and only maintains the connection with the first network.

4. The method according to claim 1 or 2, characterized in that the method further comprises:

and the terminal equipment determines the maximum uplink duty ratio of the second network according to the uplink duty ratio of the first network and the maximum equivalent uplink duty ratio.

5. The method of claim 4, wherein the terminal device determining the maximum uplink duty cycle of the second network based on the uplink duty cycle of the first network and the maximum equivalent uplink duty cycle comprises:

and the terminal equipment determines the maximum uplink duty ratio of the second network according to the uplink duty ratio and the transmitting power of the first network and combining the maximum transmitting power and the maximum equivalent uplink duty ratio.

6. The method of claim 5, wherein the determining, by the terminal device, the maximum uplink duty cycle of the second network based on the uplink duty cycle and the transmit power of the first network in combination with the maximum transmit power and the maximum equivalent uplink duty cycle comprises:

the terminal equipment determines the maximum uplink duty ratio of the second network according to the following formula:

D _N2-max ＝[D _max -D _N1 *(P ₁ /P _max )]/(1-P ₁ /P _max )

7. The method of claim 6, wherein if the transmit power of the first network and the transmit power of the second network are both 1/2 of the maximum transmit power, the maximum uplink duty cycle of the second network, D _N2-max ＝2D _max -D _N1 。

8. The method according to claim 1 or 2, wherein the terminal device determining a corresponding maximum equivalent uplink duty cycle when the total transmit power of the first network and the second network is the maximum transmit power, comprises:

setting the transmission power of the first network as a first transmission power, and setting the transmission power of the second network as a second transmission power, wherein the sum of the first transmission power and the second transmission power is the maximum transmission power;

measuring the maximum value of the radiation electric field intensity of the terminal equipment to the human body under the first transmission power and the second transmission power;

9. A method of wireless communication, for use with a network device that simultaneously provides services to a first network and a second network, the method comprising:

the network equipment receives the maximum equivalent uplink duty ratio reported by the terminal equipment, wherein the maximum equivalent uplink duty ratio is the equivalent uplink duty ratio corresponding to the time when the specific absorption ratio SAR of the electromagnetic waves of the terminal equipment reaches a preset value when the total transmitting power of the first network and the second network is the maximum transmitting power;

the network equipment controls the uplink duty ratio of the first network and/or the uplink duty ratio of the second network so that the equivalent uplink duty ratio of the terminal equipment is smaller than or equal to the maximum equivalent uplink duty ratio;

the network device controls the uplink duty ratio of the first network and/or the uplink duty ratio of the second network, so that the equivalent uplink duty ratio of the terminal device is smaller than or equal to the maximum equivalent uplink duty ratio, and the method comprises the following steps:

The network equipment determines the maximum uplink duty ratio of the second network according to the current uplink duty ratio of the first network and the maximum equivalent uplink duty ratio;

the network equipment controls the uplink duty ratio of the second network not to exceed the maximum uplink duty ratio of the second network;

10. The method of claim 9, wherein the network device determining the maximum uplink duty cycle of the second network based on the current uplink duty cycle of the first network and the maximum equivalent uplink duty cycle comprises:

and the network equipment determines the maximum uplink duty ratio of the second network according to the uplink duty ratio and the transmitting power of the first network and combining the maximum transmitting power and the maximum equivalent uplink duty ratio.

11. The method of claim 10, wherein the network device determining the maximum uplink duty cycle of the second network based on the uplink duty cycle and the transmit power of the first network in combination with the maximum transmit power and the maximum equivalent uplink duty cycle comprises:

The network device determines a maximum uplink duty cycle of the second network according to the following formula:

D _N2-max ＝[D _max -D _N1 *(P ₁ /P _max )]/(1-P ₁ /P _max )

wherein D is _N2-max D, for the maximum uplink duty cycle of the second network _N1 D, for the current uplink duty cycle of the first network _max For the maximum equivalent uplink duty cycle, P ₁ For the power value of the current transmission power of the first network, the P _max Is the power value of the maximum transmitting power.

12. The method of claim 11, wherein if the transmit power of the first network and the transmit power of the second network are both 1/2 of the maximum transmit power, the maximum uplink duty cycle D of the second network _N2-max ＝2D _max -D _N1 。

13. The method according to any one of claims 9 to 12, further comprising:

the network device determines the equivalent uplink duty ratio of the terminal device according to the following formula:

D _en ＝D _N1 *P ₁ /P _max +D _N2 *P ₂ /P _max

14. A terminal device for establishing a connection with both a first network and a second network, the terminal device comprising:

a processing module, configured to determine a corresponding maximum equivalent uplink duty ratio when a total transmission power of the first network and the second network is the maximum transmission power, where when the maximum equivalent uplink duty ratio is reached, an electromagnetic wave specific absorption ratio SAR of the terminal device reaches a predetermined value;

the communication module is used for reporting the maximum equivalent uplink duty ratio to the network equipment;

wherein the processing module is further configured to:

when the uplink duty ratio of the second network scheduled by the network device is larger than the maximum uplink duty ratio of the second network, reducing the total transmitting power of the first network and the second network so that the SAR of the terminal device is smaller than or equal to the preset value, wherein the maximum uplink duty ratio of the second network is determined according to the maximum equivalent uplink duty ratio;

wherein the processing module is further configured to:

preferentially reducing the transmission power of the second network when reducing the total transmission power;

15. The terminal device according to claim 14, wherein the processing module is specifically configured to:

reducing the transmission power of the first network and the second network so that the reduced transmission power of the first network and the second network meets the following conditions:

P ₁ ×D _N1 +P ₂ ×D _N2 ≤P _max ×D _max

16. The terminal device according to claim 14 or 15, wherein the processing module is further configured to:

17. The terminal device according to claim 14 or 15, wherein the processing module is further configured to:

18. The terminal device of claim 17, wherein the processing module is further configured to:

19. The terminal device according to claim 18, wherein the processing module is specifically configured to: determining a maximum uplink duty cycle of the second network according to the following formula:

D _N2-max ＝[D _max -D _N1 *(P ₁ /P _max )]/(1-P ₁ /P _max )

20. The terminal device of claim 19, wherein if the transmit power of the first network and the transmit power of the second network are both 1/2 of the maximum transmit power, the maximum uplink duty cycle D of the second network _N2-max ＝2D _max -D _N1 。

21. The terminal device according to claim 14 or 15, wherein the processing module is further configured to:

22. A network device that provides services to both a first network and a second network, the network device comprising:

the communication module is used for receiving the maximum equivalent uplink duty ratio reported by the terminal equipment, wherein the maximum equivalent uplink duty ratio is the equivalent uplink duty ratio corresponding to the time when the specific absorption ratio SAR of the electromagnetic waves of the terminal equipment reaches a preset value when the total transmission power of the first network and the second network is the maximum transmission power;

the processing module is used for controlling the uplink duty ratio of the first network and/or the uplink duty ratio of the second network so that the equivalent uplink duty ratio of the terminal equipment is smaller than or equal to the maximum equivalent uplink duty ratio;

The processing module is specifically configured to:

determining the maximum uplink duty ratio of the second network according to the current uplink duty ratio of the first network and the maximum equivalent uplink duty ratio;

controlling the uplink duty ratio of the second network not to exceed the maximum uplink duty ratio of the second network;

23. The network device of claim 22, wherein the processing module is further configured to:

24. The network device of claim 23, wherein the processing module is specifically configured to:

determining a maximum uplink duty cycle of the second network according to the following formula:

D _N2-max ＝[D _max -D _N1 *(P ₁ /P _max )]/(1-P ₁ /P _max )

25. The network device of claim 24, wherein if the transmit power of the first network and the transmit power of the second network are both 1/2 of the maximum transmit power, the maximum uplink duty cycle D of the second network _N2-max ＝2D _max -D _N1 。

26. The network device of any one of claims 22 to 25, wherein the processing module is further configured to:

and determining the equivalent uplink duty ratio of the terminal equipment according to the following formula:

D _en ＝D _N1 *P ₁ /P _max +D _N2 *P ₂ /P _max

27. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method according to any of claims 1 to 8.

28. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 8.

29. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 8.

30. A network device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory to perform the method according to any of claims 9 to 13.

31. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 9 to 13.

32. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 9 to 13.

33. A communication system, comprising:

the terminal device of any of claims 14 to 21; and

the network device of any of claims 22 to 26.