Power rollback method and device, chip, terminal and storage medium

Abstract

The embodiment of the invention discloses a power rollback method and device, a chip, a terminal and a storage medium, and relates to the technical field of communication. Comprising the following steps: in a dual-card working mode, acquiring a first working frequency band and a second working frequency band respectively corresponding to dual cards; under the condition that the first working frequency band causes interference on the second working frequency band, determining a power rollback strategy of the first working frequency band based on a first communication service corresponding to the first working frequency band; under the condition that the power rollback strategy indicates to carry out power rollback, carrying out power rollback on the first working frequency band; and under the condition that the power rollback strategy indicates that power rollback is not carried out, the transmitting power of the first working frequency band is maintained. By adopting the method provided by the embodiment of the invention, the power rollback strategy of the first working frequency band can be determined based on the first communication service; and under the condition that the power rollback strategy indicates that power rollback is not carried out, the transmitting power of the first working frequency band is maintained, so that the influence on the first communication service is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to a power back-off method, device, chip, terminal and storage medium. Background Art

[0002] With the rapid development of the fifth generation mobile networks (5G), dual SIM dual standby (DSDS) or dual SIM dual active (DSDA) can use two different networks at the same time. Due to the limitations of terminal antenna design, it is difficult to increase the isolation between antennas, resulting in interference between the two frequency band signals corresponding to the two networks due to factors such as the coexistence of harmonics.

[0003] In the related art, when there is interference between two frequency band signals, the power of the interfering frequency band is usually directly backed off to reduce the impact on the interfered frequency band. Summary of the invention

[0004] The embodiments of the present application provide a power fallback method, device, chip, terminal and storage medium. The technical solution is as follows:

[0005] On the one hand, an embodiment of the present application provides a power backoff method, the method comprising:

[0006] In the dual-card working mode, obtaining the first working frequency band and the second working frequency band respectively corresponding to the dual-cards;

[0007] In a case where the first working frequency band causes interference to the second working frequency band, determining a power backoff strategy for the first working frequency band based on a first communication service corresponding to the first working frequency band;

[0008] When the power backoff strategy indicates to perform power backoff, perform power backoff on the first working frequency band;

[0009] When the power backoff strategy indicates that no power backoff is to be performed, the transmit power of the first working frequency band is maintained.

[0010] On the other hand, an embodiment of the present application provides a power backoff device, the device comprising:

[0011] An acquisition module, used to acquire, in a dual-card working mode, a first working frequency band and a second working frequency band respectively corresponding to the dual-cards;

[0012] A strategy determination module, configured to determine a power backoff strategy for the first working frequency band based on a first communication service corresponding to the first working frequency band when the first working frequency band causes interference to the second working frequency band;

[0013] A policy execution module, configured to perform power backoff on the first working frequency band when the power backoff policy indicates power backoff;

[0014] The policy execution module is further configured to maintain the transmit power of the first working frequency band when the power backoff policy indicates that no power backoff is to be performed.

[0015] On the other hand, an embodiment of the present application provides a chip, which includes a programmable logic circuit and / or program instructions, and when the chip is running, it is used to implement the method described in the above aspects.

[0016] On the other hand, an embodiment of the present application provides a terminal, which includes dual cards, a processor and a memory; the memory stores at least one instruction, and the at least one instruction is used to be executed by the processor to implement the method described in the above aspect.

[0017] On the other hand, an embodiment of the present application provides a computer-readable storage medium, in which at least one instruction is stored, and the instruction is loaded and executed by a processor to implement the method described in the above aspect.

[0018] On the other hand, an embodiment of the present application provides a computer program product, which includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. A processor of a terminal reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the terminal executes the method provided in various optional implementations of the above aspects.

[0019] In an embodiment of the present application, when a first working frequency band causes interference to a second working frequency band, an embodiment of the present application provides a power backoff method, which determines a power backoff strategy for the first working frequency band based on a first communication service corresponding to the first working frequency band; when the power backoff strategy indicates that no power backoff is to be performed, the transmission power of the first working frequency band is maintained to reduce the impact on the first communication service. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 is a schematic diagram of a radio frequency path of a terminal in a dual-card working mode provided by an exemplary embodiment of the present application;

[0022] Figure 2 is a flow chart of a power backoff method provided by an exemplary embodiment of the present application;

[0023] Figure 3 It is a flowchart of determining a power backoff strategy for a first working frequency band based on a service type of a first communication service provided by an exemplary embodiment of the present application;

[0024] Figure 4 is a schematic diagram based on determining an uplink duty cycle provided by an exemplary embodiment of the present application;

[0025] Figure 5 It is a schematic diagram of a mapping table of the relationship between uplink duty cycle and power backoff amount provided by an exemplary embodiment of the present application;

[0026] Figure 6 is a flow chart of determining a power backoff correction amount provided by an exemplary embodiment of the present application;

[0027] Figure 7 is a structural block diagram of a power back-off device provided by an exemplary embodiment of the present application;

[0028] Figure 8 It is a schematic diagram of the structure of a terminal provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0030] With the rapid development of 5G NR (5th Generation New Radio) mobile services, more and more people are buying powerful dual-SIM dual-standby or dual-SIM dual-channel mobile phones to use two different networks and two different numbers at the same time.

[0031] See also Figure 1 , Figure 1 It is a schematic diagram of a radio frequency path of a terminal in a dual-card working mode provided by an exemplary embodiment of the present application.

[0032] For example only, Figure 1 The dual-card working mode is described by taking SIM card 1 supporting n78 frequency band and SIM card 2 supporting B3 or n3 frequency band as an example.

[0033] Regarding the signal transmission and reception process corresponding to the n78 frequency band:

[0034] During the signal transmission process of the n78 frequency band (shown as n78 Tx), the signal is modulated and up-converted inside the RF transceiver 10 and then emitted from the Tx0 port, amplified by the PA power amplifier 21, switched to the n78 power divider by the frequency band selection switch 31 for filtering, and then switched to the antenna by the antenna switch 41, and radiated into space through the ANT0 antenna to achieve signal transmission.

[0035] In the process of receiving signals in the n78 band based on the main receiving path (shown as n78 PRX), the n78 PRx receiving path (such as the receiving path corresponding to the Rx0, Rx1 or Rx2 port) receives the n78 band signal in the space from the ANT0 antenna, switches to the n78 receiving filter through the antenna switch 41 and enters the Rx0, Rx1 or Rx2 port of the RF transceiver 10, and then undergoes internal down-conversion demodulation to achieve signal reception.

[0036] In the process of receiving signals in the n78 band based on the auxiliary receiving path (shown as n78 DRX), the n78 DRx receiving path (such as the receiving path corresponding to the Rx7 port) receives the n78 band signal in the space from the ANT2 antenna, passes through the n78 receiving filter and enters the Rx7 port of the RF transceiver 10, and then undergoes internal down-conversion demodulation to achieve signal reception.

[0037] In the process of receiving signals based on the MIMO (Multiple-Input Multiple-Output, multi-antenna transmission and reception technology) receiving path (shown as n78 MIMO1 and n78 MIMO2) in the n78 frequency band, the n78 MIMO1 or n78MIMO2 receiving path receives the n78 frequency band signal in space from the ANT3 antenna or ANT4 antenna, passes through the n78 receiving filter and enters the Rx8 or Rx9 port of the RF transceiver 10, and then undergoes internal down-conversion demodulation to achieve signal reception.

[0038] Regarding the signal transmission and reception process corresponding to the B3 or n3 frequency band:

[0039] During the signal transmission process in the B3 or n3 frequency band (shown as B3 / n3 Tx), the signal is modulated and up-converted inside the RF transceiver 10 and then emitted from the Tx1 port, amplified by the PA power amplifier 22, switched to the B3 power divider by the frequency band selection switch 32 for filtering, and then switched to the antenna by the antenna switch 42, and radiated into space through the ANT1 antenna to achieve signal transmission.

[0040] In the process of receiving signals based on the main receiving path (shown as B3 / n3 PRX) in the B3 or n3 frequency band, the B3 / n3 PRX receiving path (such as the receiving path corresponding to the Rx3, Rx4 or Rx5 port) receives the n78 frequency band signal in the space from the ANT1 antenna, switches to the B3 receiving filter through the antenna switch 42, and enters the Rx3, Rx4 or Rx5 port of the RF transceiver 10, and then undergoes internal down-conversion demodulation to achieve signal reception.

[0041] In the process of receiving signals in the B3 or n3 frequency band based on the auxiliary receiving path (shown as B3 / n3 DRx), the B3 / n3 DRx receiving path (such as the receiving path corresponding to the Rx6 port) receives the B3 / n3 frequency band signal in the space from the ANT2 antenna, passes through the B3 receiving filter and enters the Rx6 port of the RF transceiver 10, and then undergoes internal down-conversion demodulation to achieve signal reception.

[0042] Due to the limitations of terminal antenna design, it is difficult to increase the isolation between antennas, resulting in interference between the two frequency band signals corresponding to the two networks due to factors such as the coexistence of harmonics.

[0043] For example, the transmission signal frequency range of the B3 or n3 band is 1710MHz-1785MHz, and the transmission and reception signal range of the n78 band is 3300MHz-3800MHz. When the B3 or n3 band transmits signals through the Tx1 port, the frequency band (3420MHz-3570MHz) corresponding to the second harmonic of the B3 or n3 band transmission signal just falls into the reception range of the n78 band, causing interference to the n78 band on the receiving path corresponding to the Rx2 port.

[0044] It should be noted that the working frequency band combination corresponding to the dual-card may also be other types of working frequency band combinations. Due to the low isolation between antennas, other working frequency band combinations may also cause interference due to factors such as harmonic coexistence. For example, the frequency range of the transmitted signal of the n8 band is 880-915MHZ, and the receiving signal range of the B3 band is 1805-1880MHz. The frequency band (1760MHz-1830MHz) corresponding to the second harmonic of the transmitted signal of the n8 band falls within the receiving range of the B3 band, causing interference to the receiving path of the B3 band. For another example, the frequency range of the transmitted signal of the n28 band is 703-733MHz, and the receiving signal range of the B1 band is 2110-2170MHZ. The frequency band (2106MHz-2199MHz) corresponding to the third harmonic of the transmitted signal of the n28 band falls within the receiving range of the B1 band, causing interference to the receiving path of the B1 band. The embodiment of the present application is applicable to the situation where there is interference in the working frequency band combination corresponding to the dual cards, and there is no restriction on the specific frequency band of the working frequency band combination.

[0045] In the related art, when there is interference between two frequency band signals, the power of the interfering frequency band (such as the B3 frequency band) is usually directly backed off to reduce the impact on the interfered frequency band (such as the n78 frequency band).

[0046] However, directly performing power backoff on the interference frequency band may cause network access problems due to the transmission power of the interference frequency band being too low, resulting in adverse consequences such as user withdrawal of devices.

[0047] To summarize, when the first working frequency band causes interference to the second working frequency band, an embodiment of the present application provides a power backoff method, which determines the power backoff strategy of the first working frequency band based on the first communication service corresponding to the first working frequency band; when the power backoff strategy indicates that no power backoff is to be performed, the transmission power of the first working frequency band is maintained to reduce the impact on the first communication service.

[0048] See also Figure 2 , Figure 2 FIG. 1 is a flow chart of a power backoff method provided by an exemplary embodiment of the present application. The flow chart includes the following steps.

[0049] Step 201: In a dual-SIM working mode, obtain a first working frequency band and a second working frequency band respectively corresponding to the dual SIM cards.

[0050] The dual-card working mode supports the first working frequency band and the second working frequency band to carry out communication services at the same time. Optionally, the dual-card working mode is a dual-card dual-pass mode or a dual-card dual-standby mode.

[0051] In dual-card working mode, the dual cards support signal transmission and signal reception in one of the working frequency bands respectively. For example, SIM card 1 supports signal transmission and signal reception in the first working frequency band (such as n78 band), and SIM card 2 supports signal transmission and signal reception in the second working frequency band (such as B3 or n3 band).

[0052] In some embodiments, the first working frequency band and the second working frequency band may be acquired based on a baseband chip or a modem.

[0053] Step 202: When the first working frequency band causes interference to the second working frequency band, a power backoff strategy for the first working frequency band is determined based on a first communication service corresponding to the first working frequency band.

[0054] In a possible scenario, when the frequency of the Nth harmonic of the first working frequency band belongs to the frequency band range corresponding to the second working frequency band, it is determined that the first working frequency band causes interference to the second working frequency band, where N is a positive integer. For example, the frequency band corresponding to the second harmonic of the signal transmitted in the B3 or n3 frequency band belongs to the receiving range of the n78 frequency band, and the B3 or n3 frequency band causes interference to the n78 frequency band; the frequency band corresponding to the second harmonic of the signal transmitted in the n8 frequency band partially falls within the receiving range of the B3 frequency band, and the n8 frequency band causes interference to the B3 frequency band; the frequency band corresponding to the third harmonic of the signal transmitted in the n28 frequency band partially falls within the receiving range of the B1 frequency band, and the n28 frequency band causes interference to the B1 frequency band.

[0055] In a possible implementation manner, it may be determined whether the first operating frequency band causes interference to the second operating frequency band based on uplink frequency ranges and downlink frequency ranges corresponding to different frequency bands.

[0056] Optionally, the first communication service may be a communication service of various different service types. For example, the service types of the first communication service may include different types such as video, voice, live broadcast, text, game, etc.

[0057] In some embodiments, the power backoff strategy of the first operating frequency band may be determined based on the service type of the first communication service. In other embodiments, the power backoff strategy of the first operating frequency band may also be determined based on the uplink duty cycle of the first communication service.

[0058] The power backoff strategy may include a strategy for whether to backoff the first working frequency band, and may also include a strategy for backoff the first working frequency band according to the power backoff amount.

[0059] Step 203: When the power backoff policy indicates to perform power backoff, perform power backoff on the first working frequency band.

[0060] For example only, if the transmit power of the first working frequency band is 15.56dBm, and the power backoff strategy is to backoff the first working frequency band by 10dBm, then the transmit power of the first working frequency band after power backoff is 5.56dBm.

[0061] Step 204: When the power backoff policy indicates that no power backoff is to be performed, the transmit power of the first working frequency band is maintained.

[0062] For example only, if the transmit power of the first working frequency band is 15.56 dBm and the power backoff strategy is not to perform power backoff, the transmit power of the first working frequency band is maintained at 15.56 dBm for signal transmission.

[0063] To summarize, the power backoff strategy of the first working frequency band is determined through the first communication service corresponding to the first working frequency band. When the power backoff strategy indicates that no power backoff is performed, the transmission power of the first working frequency band is maintained. This can reduce the impact on the first communication service when the power backoff demand is not high, and avoid adverse factors such as network access problems caused by direct power backoff.

[0064] When the first communication service corresponding to the first working frequency band is some high uplink duty cycle type service (such as video, live broadcast or game, etc.), the first working frequency band has a large interference with the second working frequency band, and the first working frequency band needs to be power-backed. When the first communication service is other low uplink duty cycle type service, the first working frequency band has relatively little interference with the second working frequency band, and the first working frequency band does not need to be power-backed.

[0065] Therefore, the power back-off strategy for the first working frequency band may be determined based on the service type of the first communication service.

[0066] See also Figure 3 , Figure 3 This is a flowchart of determining a power backoff strategy for a first working frequency band based on a service type of a first communication service provided by an exemplary embodiment of the present application. The method comprises the following steps:

[0067] Step 301: In a dual-SIM working mode, obtain a first working frequency band and a second working frequency band respectively corresponding to the dual SIM cards.

[0068] In some embodiments, the first working frequency band and the second working frequency band may be acquired based on a baseband chip or a modem.

[0069] Step 302: determine whether the first working frequency band causes interference to the second working frequency band.

[0070] In some embodiments, whether the first working frequency band causes interference to the second working frequency band may be determined based on a dual-card interference frequency band combination table, wherein the dual-card interference frequency band combination table stores specific frequency information of different working frequency bands having an interference relationship.

[0071] In some embodiments, when the frequency of the Nth harmonic of the first working frequency band belongs to the frequency band range corresponding to the second working frequency band, it is determined that the first working frequency band causes interference to the second working frequency band, where N is a positive integer.

[0072] When the first working frequency band does not interfere with the second working frequency band, step 305 is performed.

[0073] When the first working frequency band causes interference to the second working frequency band, step 303 is performed.

[0074] Step 303, determining whether the first communication service belongs to a first service type; wherein an uplink duty cycle of the first service type is higher than an uplink duty cycle of other service types other than the first service type.

[0075] Optionally, the first service type may be at least one of service types with a high uplink duty cycle, such as a video service type, a live broadcast service type, and a game service type.

[0076] When the first communication service does not belong to the first service type, step 305 is executed.

[0077] In the case that the first communication service belongs to the first service type, step 304 is executed.

[0078] Step 304: Determine the power backoff strategy as performing power backoff.

[0079] Step 305: Determine the power backoff strategy as not performing power backoff.

[0080] In this embodiment, by judging whether the service type of the first communication service belongs to the first service type with a high uplink duty cycle, it is possible to quickly and directly judge whether the interference of the first working frequency band on the second working frequency band is large, so as to quickly determine the power backoff strategy of the first working frequency band. When the power backoff demand is not high, the impact on the first communication service is reduced, and adverse factors such as network access problems caused by direct power backoff are avoided.

[0081] In other embodiments, the terminal may also obtain the uplink duty cycle of the first communication service through the baseband chip, and determine the power backoff strategy of the first working frequency band based on the uplink duty cycle.

[0082] See also Figure 4 , Figure 4 It is a schematic diagram based on determining an uplink duty cycle provided by an exemplary embodiment of the present application.

[0083] In some embodiments, when the first working frequency band interferes with the second working frequency band, the uplink duty cycle of the first communication service is obtained, wherein the uplink duty cycle of the first communication service is the ratio of the uplink time slot in the uplink transmission frame of the first communication service to the total time slot.

[0084] like Figure 4 As shown, the duration of the uplink transmission frame is 10ms, and the uplink transmission frame contains 20 subframes, each of which has a duration of 0.5ms. Each subframe contains 7 time slots, among which the uplink time slots of the first communication service are shown in black time slot intervals. Then the ratio of the uplink time slots in the uplink transmission frame to the total time slots is 32.9%, that is, the uplink duty cycle of the first communication service is 32.9%.

[0085] In some embodiments, a power backoff strategy for the first operating frequency band may be determined based on an uplink duty cycle of the first communication service.

[0086] If the uplink duty cycle of the first communication service is less than or equal to a threshold (such as 12%), it means that the interference of the first working frequency band on the second working frequency band is relatively small. Therefore, when the uplink duty cycle is less than or equal to the threshold, the power backoff strategy can be determined as no power backoff.

[0087] If the uplink duty cycle of the first communication service is greater than a threshold (such as 12%), it indicates that the first operating frequency band has a relatively large interference with the second operating frequency band. Therefore, when the uplink duty cycle is greater than the threshold, the power backoff strategy is determined to be power backoff.

[0088] When the uplink duty cycle is greater than a threshold, in some embodiments, a power backoff amount corresponding to the power backoff strategy may be determined based on the uplink duty cycle, and power backoff may be performed on the first working frequency band based on the power backoff amount.

[0089] The power backoff amount is positively correlated with the uplink duty cycle of the first communication service. That is, the larger the uplink duty cycle of the first communication service, the greater the interference of the first working frequency band to the second working frequency band, and the greater the power backoff amount of the first working frequency band.

[0090] Regarding the method for determining the power backoff amount based on the uplink duty cycle of the first communication service, in some embodiments, the power backoff amount of the first communication service can be determined through a mapping table of the relationship between the uplink duty cycle and the power backoff amount.

[0091] See also Figure 5 , Figure 5 It is a schematic diagram of a mapping table of the relationship between uplink duty cycle and power backoff amount provided by an exemplary embodiment of the present application.

[0092] like Figure 5 As shown, the relationship mapping table can store relevant information of the interfering frequency band (i.e., the first working frequency band), relevant information of the interfered frequency band (i.e., the second working frequency band), the interference type, and the correlation between the uplink duty cycle of the interfering frequency band and the power backoff amount of the interfering frequency band.

[0093] For example only, the relationship mapping table stores that the radio access technology corresponding to the interference frequency band B3 is 4GLTE (LongTerm Evolution), the radio access technology corresponding to the interfered frequency band n78 is 5G NR, the interference type is harmonic interference, and different uplink duty cycles of the communication services corresponding to the interference frequency bands correspond to different power backoff strategies. For example, when the uplink duty cycles are 100%, 50% to 90%, 40% to 50%, 30% to 40%, 20% to 30%, and 12% to 20%, respectively, since the uplink duty cycle is greater than the threshold of 12%, the power backoff strategy is to perform power backoff, and the power backoff amounts of the interference frequency bands are 10dBm, 9dBm, 8dBm, 7dBm, 6dBm, and 5dBm, respectively. When the uplink duty cycle is less than or equal to 12%, the power backoff strategy is determined to be no power backoff.

[0094] In some embodiments, before the terminal leaves the factory, the interference amount of the communication service of the interfering frequency band on the communication service of the interfered frequency band based on different uplink duty cycles can be measured in an experimental environment, and the corresponding relationship between the uplink duty cycle and the power backoff amount can be determined based on the interference amount. The interference amount and the power backoff amount are positively correlated.

[0095] For example only, in an experimental environment, when the interference frequency band B3 transmits signals at an uplink duty cycle of 100%, the amount of interference to the communication service of the interfered frequency band is about 20dB; when the interference frequency band B3 transmits signals at an uplink duty cycle of 40%, the amount of interference to the communication service of the interfered frequency band is about 12-15dB. Therefore, the power backoff amount can be determined based on the interference amount, thereby determining the corresponding relationship between the uplink duty cycle and the power backoff amount, and storing it in a relationship mapping table.

[0096] In this embodiment, by obtaining the uplink duty cycle and determining the power backoff amount of the first working frequency band based on the uplink duty cycle, the first working frequency band can be power backoffed according to the amount of interference of the first working frequency band on the second working frequency band; when the amount of interference is small, the power backoff amount can also be reduced accordingly to ensure the quality of the first communication service corresponding to the first working frequency band and reduce the impact on the first communication service.

[0097] In some scenarios, the second communication service corresponding to the second working frequency band may have different tolerances for latency, and thus have different requirements for the power backoff amount of the first working frequency band. For example, when the second communication service is a type with a low tolerance for latency, such as games and live broadcasts, if the power backoff amount of the first working frequency band is small, it may still have an impact on the second communication service; on the contrary, when the second communication service is a type with a high tolerance for latency, such as social networking and chatting, the power backoff amount of the first working frequency band is reduced accordingly, which will not cause excessive interference to the second communication service and ensure the quality of the first communication service.

[0098] Therefore, in some embodiments, the power backoff amount can be corrected based on the tolerance of the second communication service corresponding to the second working frequency band to the delay, to obtain the power backoff correction amount, and the first working frequency band can be power backed off based on the power backoff correction amount. The difference between the power backoff amount and the power backoff correction amount is negatively correlated with the tolerance level, that is, the higher the tolerance level, the smaller the difference between the power backoff amount and the power backoff correction amount.

[0099] Exemplarily, when the first working frequency band transmits signals at an uplink duty cycle of 40%, the corresponding power backoff amount is 7dBm. The terminal can obtain the second communication service corresponding to the second working frequency band based on the baseband chip. When the second communication service is a service type with a relatively high tolerance for delay (such as social dynamic updates), the power backoff correction amount can be determined to be 2dBm, and the corrected power backoff amount is 5dBm; when the second communication service is a service type with the second highest tolerance for delay (such as social chat), the power backoff correction amount can be determined to be 1dBm, and the corrected power backoff amount is 6dBm.

[0100] In this embodiment, the power backoff amount is corrected based on the tolerance of the second communication service to delay, taking into account the actual demand for the power backoff amount of the second working frequency band for the first working frequency band. When the tolerance of the second communication service to delay is relatively high, the power backoff correction amount can be increased accordingly, so that the corrected power backoff amount is smaller, thereby further reducing the impact on the first communication service.

[0101] During the continuous use of dual cards, the second communication service may change. At this time, the power backoff amount can be corrected based on the tolerance of the second communication service to delay after the change to obtain the power backoff correction amount; and the first working frequency band can be power backed off again based on the power backoff correction amount.

[0102] For example only, before the change, the second communication service is a service type with a relatively high tolerance for delay (such as social dynamic updates), and the corresponding power backoff correction amount is 2dBm; when the second communication service is changed to the service type with the second highest tolerance for delay (such as social chat), the power backoff amount can be corrected based on the tolerance of the second communication service to delay after the change, and the power backoff correction amount can be determined to be 1dBm, and based on the difference between the power backoff amount of the first working frequency band and the power backoff correction amount, the first working frequency band is powered back off.

[0103] See also Figure 6 , Figure 6 A flowchart of determining a power back-off correction amount provided by an exemplary embodiment of the present application includes the following steps.

[0104] Step 601: In a dual-SIM working mode, obtain a first working frequency band and a second working frequency band respectively corresponding to the dual SIM cards.

[0105] In some embodiments, the first working frequency band and the second working frequency band may be acquired based on a baseband chip or a modem.

[0106] Step 602: Determine whether the first working frequency band causes interference to the second working frequency band.

[0107] In some embodiments, whether the first working frequency band causes interference to the second working frequency band may be determined based on a dual-card interference frequency band combination table, wherein the dual-card interference frequency band combination table stores specific frequency information of different working frequency bands having an interference relationship.

[0108] In some embodiments, when the frequency of the Nth harmonic of the first working frequency band belongs to the frequency band range corresponding to the second working frequency band, it is determined that the first working frequency band causes interference to the second working frequency band, where N is a positive integer.

[0109] If the first working frequency band does not interfere with the second working frequency band, step 609 is performed.

[0110] When the first working frequency band causes interference to the second working frequency band, step 603 is performed.

[0111] Step 603: Obtain an uplink duty cycle of the first communication service.

[0112] In some embodiments, the ratio of the uplink time slot to the total time slot in the uplink transmission frame of the first communication service may be used as the uplink duty cycle of the first communication service.

[0113] Step 604, determining whether the uplink duty cycle is greater than a threshold.

[0114] If the uplink duty cycle is less than or equal to the threshold, step 609 is executed.

[0115] If the uplink duty cycle is greater than the threshold, step 605 is executed.

[0116] Step 605: Determine a power backoff amount based on the uplink duty cycle of the first working frequency band.

[0117] Optionally, the power backoff amount of the first communication service is determined through a mapping table of the relationship between the uplink duty cycle and the power backoff amount.

[0118] Step 606: Correct the power backoff amount based on the tolerance of the second communication service corresponding to the second working frequency band to the delay, and obtain a power backoff correction amount.

[0119] Among them, the difference between the power backoff amount and the power backoff correction amount is negatively correlated with the tolerance level.

[0120] Step 607: Perform power backoff on the first working frequency band based on the power backoff correction amount.

[0121] For example, (original transmit power-power back-off amount+power back-off correction amount) is used as the transmit power of the first working frequency band.

[0122] Step 608: Determine whether the second communication service has changed.

[0123] If the second communication service has not been changed, step 607 is executed.

[0124] When the second communication service is changed, step 606 is executed.

[0125] The power backoff amount is corrected based on the tolerance of the second communication service to the delay after the change to obtain a power backoff correction amount.

[0126] Step 609: Determine that the power backoff strategy is not to perform power backoff.

[0127] When the second communication service just starts, it may not be possible to immediately perform power backoff on the first working frequency band. Therefore, the uplink duty cycle can be obtained within a certain period of time, and then the power backoff amount can be determined based on the uplink duty cycle. The first working frequency band can then be power backoff based on the power backoff amount.

[0128] In some embodiments, the terminal performs uplink duty cycle statistics in a first time period to obtain an uplink duty cycle of a first communication service; wherein, power backoff is not performed in the first working frequency band in the first time period.

[0129] Optionally, the first time period is a preset time period when the second communication service starts. For example, the first time period may be the first 3 seconds or the first 5 seconds when the second communication service starts.

[0130] In some embodiments, the ratio of the uplink time slot in the first time period to the length of the first time period may be counted as the uplink duty cycle.

[0131] When the uplink duty cycle is less than or equal to the threshold, the transmit power of the first working frequency band is maintained for a period of time after the first time period.

[0132] When the uplink duty cycle is greater than a threshold, in some embodiments, after the first time period, the terminal determines a power backoff amount based on the uplink duty cycle, and performs power backoff on the first working frequency band based on the power backoff amount.

[0133] During the continuous use of dual SIM cards, the first communication service may change.

[0134] In some embodiments, when the first working frequency band interferes with the second working frequency band and the first communication service changes, the terminal may redetermine the power backoff strategy for the first working frequency band based on the changed first communication service.

[0135] Optionally, the terminal may redetermine the power backoff strategy for the first working frequency band based on the service type of the changed first communication service. When the changed first communication service belongs to the first service type, the power backoff strategy is determined to be power backoff; the uplink duty cycle of the first service type is higher than the uplink duty cycle of other service types other than the first service type; when the changed first communication service does not belong to the first service type, the power backoff strategy is determined to be no power backoff.

[0136] Optionally, the terminal may determine a power backoff strategy for the first working frequency band based on the changed uplink duty cycle of the first communication service. When the uplink duty cycle is greater than a threshold, the power backoff strategy is determined to be power backoff; when the uplink duty cycle is less than or equal to the threshold, the power backoff strategy is determined to be no power backoff.

[0137] See also Figure 7 , Figure 7 : is a structural block diagram of a power backoff device provided by an exemplary embodiment of the present application. The device is applied to a terminal equipped with dual SIM cards, and the device includes:

[0138] An acquisition module 701 is used to acquire, in a dual-card working mode, a first working frequency band and a second working frequency band corresponding to the dual-cards respectively;

[0139] A strategy determination module 702 is used to determine a power backoff strategy for the first working frequency band based on a first communication service corresponding to the first working frequency band when the first working frequency band causes interference to the second working frequency band;

[0140] A policy execution module 703, configured to perform power backoff on the first working frequency band when the power backoff policy indicates power backoff;

[0141] The policy execution module 703 is further configured to maintain the transmit power of the first working frequency band when the power backoff policy indicates not to perform power backoff.

[0142] Optionally, the policy determination module 702 is further configured to:

[0143] In the case where the first communication service belongs to the first service type, determining the power backoff strategy is to perform power backoff; the uplink duty cycle of the first service type is higher than the uplink duty cycle of other service types other than the first service type; the uplink duty cycle is the ratio of the uplink time slot to the total time slot;

[0144] In a case where the first communication service does not belong to the first service type, the power backoff strategy is determined to be no power backoff.

[0145] Optionally, the policy determination module 702 is further configured to:

[0146] In the case where the first working frequency band causes interference to the second working frequency band, obtaining an uplink duty cycle of the first communication service; the uplink duty cycle is a ratio of an uplink time slot to a total time slot;

[0147] Based on the uplink duty cycle, a power backoff strategy for the first operating frequency band is determined.

[0148] Optionally, the policy determination module 702 is further configured to:

[0149] When the uplink duty cycle is greater than a threshold, determining that the power backoff strategy is to perform power backoff;

[0150] When the uplink duty cycle is less than or equal to the threshold, the power backoff strategy is determined to be not performing power backoff.

[0151] Optionally, the policy determination module 702 is further configured to:

[0152] In the case where the uplink duty cycle is greater than the threshold, determining a power backoff amount corresponding to the power backoff strategy based on the uplink duty cycle; the power backoff amount is positively correlated with the uplink duty cycle;

[0153] Optionally, the policy execution module 703 is further configured to:

[0154] Power backoff is performed on the first operating frequency band based on the power backoff amount.

[0155] Optionally, the policy execution module 703 is further configured to:

[0156] The power backoff amount is corrected based on the tolerance degree of the second communication service corresponding to the second working frequency band to the delay to obtain a power backoff correction amount, wherein the difference between the power backoff amount and the power backoff correction amount is negatively correlated with the tolerance degree;

[0157] Based on the power backoff correction amount, power backoff is performed on the first operating frequency band.

[0158] Optionally, the policy execution module 703 is further configured to:

[0159] In the case where the second communication service is changed, the power backoff amount is corrected based on the tolerance of the second communication service to delay after the change to obtain the power backoff correction amount.

[0160] Optionally, the policy determination module 702 is further configured to:

[0161] Uplink duty cycle statistics are performed within a first time period to obtain the uplink duty cycle of the first communication service; wherein, no power backoff is performed on the first working frequency band within the first time period.

[0162] Optionally, the policy determination module 702 is further configured to:

[0163] When the first working frequency band interferes with the second working frequency band and the first communication service changes, the power backoff strategy of the first working frequency band is re-determined based on the changed first communication service.

[0164] See also Figure 8 , Figure 8 It is a schematic diagram of the structure of a terminal provided by an exemplary embodiment of the present application.

[0165] The terminal can execute the power fallback method of the above embodiment. The terminal is provided with dual cards, namely a first SIM card 831 and a second SIM card 832. The terminal is a terminal device that can realize dual-card dual-pass or dual-card dual-standby functions, such as a smart phone, a smart watch, etc. The terminal may also be called a user equipment, a portable terminal, etc. The terminal may also include one or more of the following components: a processor 810 and a memory 820.

[0166] Optionally, the processor 810 uses various interfaces and lines to connect various parts of the entire electronic device, and executes various functions of the electronic device and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 820, and calling data stored in the memory 820. Optionally, the processor 810 can be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). The processor 810 can integrate one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), a neural network processor (NPU), and a baseband chip. Among them, the CPU mainly processes the operating system, user interface, and application programs; the GPU is responsible for rendering and drawing the content that needs to be displayed on the touch display; the NPU is used to implement artificial intelligence (AI) functions; and the baseband chip is used to process wireless communications. It is understandable that the above baseband chip may not be integrated into the processor 810, but may be implemented by a separate chip.

[0167] The memory 820 may include a random access memory (RAM) or a read-only memory (ROM). Optionally, the memory 820 includes a non-transitory computer-readable storage medium. The memory 820 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 820 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the following various method embodiments, etc.; the data storage area may store data created according to the use of the electronic device (such as audio data, a phone book), etc.

[0168] The first SIM card 831 and the second SIM card 832 are user identification cards of digital cellular mobile phones. Optionally, the first SIM card 831 and the second SIM card 832 are used to store data related to user communication, including telephone number, International Mobile Subscriber Identity (IMSI), Personal Identification Number (PIN), authentication key, service provider name, etc. Optionally, the first SIM card 831 and the second SIM card 832 are composed of five parts, including CPU (8 bits), RAM (working memory, 6 to 16 kB), ROM (program memory, 3 to 8 kB), EPROM or EEPROM (data memory, 128 to 256 kB) and serial communication unit. Optionally, the first SIM card 831 and the second SIM card 832 are embedded SIM cards or card-type SIM cards.

[0169] To realize the dual-SIM dual-pass or dual-SIM dual-standby functions, the terminal may also be provided with other devices. Optionally, the terminal may be provided with a baseband chip, a radio frequency transceiver, an antenna, a power supply, a frequency band selection switch, a power divider, a receiving filter, and an antenna switch, and these devices may be coupled through various interconnection buses or other electrical connection methods.

[0170] In addition, those skilled in the art will appreciate that the structure of the terminal shown in the above figures does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown, or a combination of certain components, or a different arrangement of components.

[0171] An embodiment of the present application further provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip is running, it is used to implement the power back-off method as described in the above aspects.

[0172] The embodiment of the present application also provides a computer-readable storage medium, in which at least one instruction is stored, and the at least one instruction is loaded and executed by a processor to implement the method described in the above embodiment. Optionally, the computer-readable storage medium may include: ROM, RAM, solid state drive (SSD, Solid State Drives) or optical disk, etc. Among them, RAM may include resistance random access memory (ReRAM, Resistance Random Access Memory) and dynamic random access memory (DRAM, Dynamic Random Access Memory).

[0173] The embodiment of the present application also provides a computer program product or a computer program, which includes a computer instruction stored in a computer-readable storage medium. The processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the method provided in various optional implementations of the above aspects.

[0174] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A power backoff method, characterized in that: The method is applied to a terminal provided with dual SIM cards, and the method comprises: In the dual-card working mode, obtaining the first working frequency band and the second working frequency band respectively corresponding to the dual-cards; In a case where the first working frequency band causes interference to the second working frequency band, determining a power backoff strategy for the first working frequency band based on a first communication service corresponding to the first working frequency band; When the power backoff strategy indicates to perform power backoff, perform power backoff on the first working frequency band; When the power backoff strategy indicates that no power backoff is to be performed, the transmit power of the first working frequency band is maintained.

2. The method according to claim 1, characterized in that The determining, based on the first communication service corresponding to the first working frequency band, a power backoff strategy for the first working frequency band includes: In the case where the first communication service belongs to the first service type, determining the power backoff strategy is to perform power backoff; the uplink duty cycle of the first service type is higher than the uplink duty cycle of other service types other than the first service type; the uplink duty cycle is the ratio of the uplink time slot to the total time slot; In a case where the first communication service does not belong to the first service type, the power backoff strategy is determined to be no power backoff.

3. The method according to claim 1, characterized in that The determining, in a case where the first working frequency band causes interference to the second working frequency band, a power backoff strategy for the first working frequency band based on a first communication service corresponding to the first working frequency band, includes: In the case where the first working frequency band causes interference to the second working frequency band, obtaining an uplink duty cycle of the first communication service; the uplink duty cycle is a ratio of an uplink time slot to a total time slot; Based on the uplink duty cycle, a power backoff strategy for the first operating frequency band is determined.

4. The method according to claim 3, characterized in that The determining, based on the uplink duty cycle, a power backoff strategy for the first working frequency band includes: When the uplink duty cycle is greater than a threshold, determining that the power backoff strategy is to perform power backoff; When the uplink duty cycle is less than or equal to the threshold, the power backoff strategy is determined to be not performing power backoff.

5. The method according to claim 4, characterized in that The step of determining, when the uplink duty cycle is greater than a threshold, that the power backoff strategy is to perform power backoff, includes: In the case where the uplink duty cycle is greater than the threshold, determining a power backoff amount corresponding to the power backoff strategy based on the uplink duty cycle; the power backoff amount is positively correlated with the uplink duty cycle; The performing power backoff on the first working frequency band includes: Power backoff is performed on the first operating frequency band based on the power backoff amount.

6. The method according to claim 5, characterized in that The performing power backoff on the first working frequency band based on the power backoff amount includes: The power backoff amount is corrected based on the tolerance degree of the second communication service corresponding to the second working frequency band to the delay to obtain a power backoff correction amount, wherein the difference between the power backoff amount and the power backoff correction amount is negatively correlated with the tolerance degree; Based on the power backoff correction amount, power backoff is performed on the first operating frequency band.

7. The method according to claim 6, characterized in that The method further comprises: In the case where the second communication service is changed, the power backoff amount is corrected based on the tolerance of the second communication service to delay after the change to obtain the power backoff correction amount.

8. The method according to claim 3, characterized in that The acquiring the uplink duty cycle of the first communication service includes: Uplink duty cycle statistics are performed within a first time period to obtain the uplink duty cycle of the first communication service; wherein, no power backoff is performed on the first working frequency band within the first time period.

9. The method according to claim 1, characterized in that: The method further comprises: When the first working frequency band interferes with the second working frequency band and the first communication service changes, the power backoff strategy of the first working frequency band is re-determined based on the changed first communication service.

10. A power fallback device, characterized in that: The device is applied to a terminal provided with dual SIM cards, and comprises: An acquisition module, used to acquire, in a dual-card working mode, a first working frequency band and a second working frequency band respectively corresponding to the dual-cards; A strategy determination module, configured to determine a power backoff strategy for the first working frequency band based on a first communication service corresponding to the first working frequency band when the first working frequency band causes interference to the second working frequency band; A policy execution module, configured to perform power backoff on the first working frequency band when the power backoff policy indicates power backoff; The policy execution module is further configured to maintain the transmit power of the first working frequency band when the power backoff policy indicates that no power backoff is to be performed.

11. A chip, characterized in that: The chip includes a programmable logic circuit and / or program instructions, and when the chip is running, it is used to implement the power back-off method according to any one of claims 1 to 9.

12. A terminal, characterized in that: The terminal includes dual cards, a processor and a memory; the memory stores at least one instruction, and the at least one instruction is used to be executed by the processor to implement the power backoff method according to any one of claims 1 to 9.

13. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores at least one instruction, and the instruction is loaded and executed by the processor to implement the power back-off method according to any one of claims 1 to 9.

14. A computer program product, characterized in that The computer program product includes computer instructions, which are stored in a computer-readable storage medium; a processor of the terminal reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the terminal executes the power backoff method as described in any one of claims 1 to 9.

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