WO2022262248A1 - 频偏控制方法及装置、终端、存储介质 - Google Patents

频偏控制方法及装置、终端、存储介质 Download PDF

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Publication number
WO2022262248A1
WO2022262248A1 PCT/CN2021/141458 CN2021141458W WO2022262248A1 WO 2022262248 A1 WO2022262248 A1 WO 2022262248A1 CN 2021141458 W CN2021141458 W CN 2021141458W WO 2022262248 A1 WO2022262248 A1 WO 2022262248A1
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Prior art keywords
physical layer
state
terminal
priority
card
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English (en)
French (fr)
Inventor
吴大焰
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Definitions

  • the present application relates to the field of communication technologies, and in particular to a frequency offset control method and device, a terminal, and a storage medium.
  • the card where the New Radio (NR) is located and other cards have their own frequency offset adjustment and configuration timing.
  • NR New Radio
  • PLL Phase-locked loops
  • CP Cyclic Prefix
  • the routine processing is: one is to let the card where NR is located adjust the Voltage Controlled Oscillator (Voltage Controlled Oscillator, VCO), and other cards only adjust the digitally controlled (Numerical Control) oscillator (Numerically Controlled Oscillator, NCO), its disadvantage is that it has a great impact on the transceiver performance of other cards; the other is that all cards only adjust the NCO, but due to the residual frequency offset on the crystal oscillator or PLL, resulting in NR Slot or LTE TTI, etc. The time frame length of each mode is inaccurate, and long-term accumulation will introduce a large time offset; the other is to stagger the sending and receiving time of each card business, and maintain the frequency offset control word separately.
  • GAP Hole punching
  • Embodiments of the present application provide a frequency offset control method and device, a terminal, and a storage medium.
  • the frequency offset control method the frequency offset tracking performance of the card where the NR is located can be ensured without GAP, regardless of each card. Whether the modes are synchronized or not, through the VCO adjustment control selection of multi-mode and multi-card, and the joint frequency offset adjustment of VCO and NCO, the impact on the transceiver performance of each mode of each card is minimized.
  • the embodiment of the present application provides a frequency offset control method, the method comprising: obtaining the current physical layer status of each terminal card; determining the current physical layer status of all terminal cards, and the status of all terminal cards
  • the situation of the current physical layer state includes the first situation and the second situation, if the situation of the current physical layer state is the first situation, then a target terminal card obtains the VCO control right, if the state of the current physical layer If it is the second situation, multiple target terminal cards alternately acquire the VCO control right; and adjust the frequency offset according to the result of the VCO control right acquisition.
  • said obtaining the current physical layer state of each terminal card includes: obtaining the current physical layer state of each terminal card as network search state (Sync), receiving paging state (IDLE DRX), random access state (RA Access), connected state DRX (Connect DRX) or not entering the connected state (Non-DRX Connect); wherein, the state of searching the network, the state of receiving paging, the state of random access, the state of connection
  • the priorities of DRX and the non-connected state are the fifth priority, the fourth priority, the third priority, the second priority and the first priority, and the fifth priority and the fourth priority
  • the physical layer state corresponding to the priority is a low priority physical layer state
  • the physical layer states corresponding to the third priority, the second priority, and the first priority are high priority physical layer states.
  • the determination of the current physical layer status of all terminal cards includes the first situation and the second situation includes: determining whether the current physical layer status of each terminal card is There is the low-priority physical layer state, if the low-priority physical layer state does not exist in the physical layer state of each terminal card, it is determined that the current physical layer state of each terminal card belongs to the first combined state; if each terminal card If the low-priority physical layer state exists in the current physical layer state of each terminal card, it is determined whether the high-priority physical layer state exists in the current physical layer state of each terminal card, if the physical layer state of each terminal card exists.
  • a high-priority physical layer state, and there is only one high-priority physical layer state then it is determined that the current physical layer state of each terminal card belongs to the second combined state, if the high-priority state exists in the physical layer state of each terminal card physical layer state, and there are at least two high-priority physical layer states, then it is determined that the physical layer state of each terminal card belongs to the third combined state; if the low priority does not exist in the current physical layer state of each terminal card If the current physical layer state of each terminal card is the same, then determine whether the current physical layer state of each terminal card belongs to the fourth combined state, if each terminal card The current physical layer state of the card is not the same, then determine whether there is only one physical layer state of the fourth priority in the current physical layer state of each terminal card, if there is only one of the fourth priority in the current physical layer state of each terminal card Priority physical layer state, then determine that the current physical layer state of each terminal card belongs to the fifth combined state, if there are at least two physical layer states of the fourth
  • obtaining the VCO control right by a target terminal card includes: if the first state of the current physical layer state includes the second combination state, then the terminal card corresponding to the unique high-priority physical layer state in all terminal cards obtains the VCO control right; or if the first situation of the current physical layer state includes the fifth combined state, then all terminal cards The only terminal card corresponding to the fourth priority physical layer state obtains the VCO control right.
  • alternately obtaining the VCO control right by multiple target terminal cards includes: if the second state of the current physical layer state includes the first combined state , each terminal card alternately obtains the VCO control right; if the second condition of the current physical layer state includes the third combined state, the terminal cards corresponding to each high-priority physical layer state in all terminal cards alternately obtain the VCO control If the second situation of the current physical layer state includes the fourth combination state, each terminal card alternately obtains the VCO control right; or if the second situation of the current physical layer state includes the sixth combination state In all terminal cards, the terminal cards corresponding to the physical layer states of the fourth priority alternately obtain the VCO control right.
  • multiple target terminal cards alternately obtain the VCO control right, it also includes: if it is determined that each terminal card that alternately obtains the VCO control right If the task execution mode among them is the serial time-division mode, the terminal card currently executing the task will obtain the control right of the VCO; The network mode of each terminal card that alternately obtains the control right of the VCO determines the terminal card that currently obtains the control right of the VCO.
  • the terminal card that currently obtains the VCO control right Including: determining whether there is only one terminal card whose network mode has the highest priority among the terminal cards that alternately obtain the VCO control right; if only one terminal card has the highest network mode priority, the network mode with the highest priority
  • the terminal card obtains the VCO control right. If the priority of the network mode of at least two terminal cards is the highest, the terminal card corresponding to the one with the highest priority of the physical layer state among the at least two terminal cards with the highest priority of the network mode obtains the VCO Control.
  • the embodiment of the present application further provides a frequency offset control device, the device includes: a processor and a memory, the memory is used to store at least one instruction, and when the instruction is loaded and executed by the processor, the Implement the frequency offset control method provided in the first aspect.
  • the frequency offset control device provided in the second aspect may be a chip or a chip module.
  • another embodiment of the present application also provides a chip, the chip is connected to a memory, or the chip is integrated with a memory (such as the frequency offset control device provided in the second aspect), when the memory stores When the program or instruction is executed, the frequency offset control method provided in the first aspect is implemented.
  • an embodiment of the present application provides a terminal, and the terminal includes a terminal body and the frequency offset control device provided in the second aspect.
  • another embodiment of the present application further provides a terminal, where the terminal includes a terminal body and the chip provided in the third aspect.
  • the embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the frequency offset control method provided in the first aspect is implemented.
  • a target terminal card after determining the current physical layer status of all terminal cards, if the current physical layer status is the first situation, a target terminal card can obtain the VCO control right, if the If the state of the current physical layer is the second state, multiple target terminal cards alternately obtain the VCO control right, and adjust the frequency offset according to the result of obtaining the VCO control right.
  • the control selection can be adjusted through the VCO of multi-mode and multi-card, and the joint frequency offset of VCO and NCO Adjust to minimize the impact on the sending and receiving performance of each card and each mode.
  • Fig. 1 provides a schematic diagram of multiple cards in a multi-card multi-mode terminal according to an embodiment of the present application
  • FIG. 2 is a flowchart of a frequency offset control method provided in another embodiment of the present application.
  • FIG. 3 is a flow chart of determining the VCO control right provided by another embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of a frequency offset control device provided by another embodiment of the present application.
  • a terminal such as an NR terminal
  • a terminal performs frequency offset control in a standalone network (Standalone operation mode, SA) or a non-standalone network (Non-Standalone operation mode, NSA)
  • SA Standalone operation mode
  • Non-Standalone operation mode NSA
  • PLL phase-locked loop
  • the frequency offset The adjustment should be performed within the range of the cyclic prefix (Cyclic Prefix, CP) of the Orthogonal Frequency Division Multiplexing (OFDM) symbol (Symbol) (OFDM Symbol) as much as possible. Since the network mode, time offset and frequency offset of the multi-mode and multi-card cards may not be the same, independent frequency offset tracking and control are required, but the CP range of the card where the NR is located may be different from the The sending and receiving times of other cards overlap (Overlap). At this time, when the frequency offset is adjusted within the CP range of the NR, the frequency offset instability time generated by it may affect the sending and receiving performance of other cards.
  • CP Cyclic Prefix
  • OFDM Symbol Orthogonal Frequency Division Multiplexing
  • the conventional treatment is: when performing frequency offset control under multi-mode and multiple cards, one method is to directly use multiple crystal oscillators or multiple PLLs, so that the frequency offset control of each card is not constrained by each other, but the disadvantage is The cost is high; the other only uses one crystal oscillator or PLL, and let the card where the NR is located adjust the VCO, and other cards adjust the NCO, but the disadvantage is that it has a greater impact on the transceiver performance of other cards; the other is that all cards are Only adjust the NCO, the disadvantage is that the residual frequency offset on the crystal oscillator or PLL will cause the scheduling granularity Slot of NR, the transmission time interval TTI of LTE or the frame length of other card modes to be inaccurate, thus introducing time offset; there is also a It is to stagger the sending and receiving time of each card business, and maintain the frequency offset control word separately.
  • the disadvantage is that each card needs to be punched, which has a great impact on the sending and receiving of the punched card, which in turn affect
  • the frequency deviation between the UE carrier frequency and the base station carrier frequency of NR must meet the requirements of the agreement, that is, it cannot exceed +/-0.1PPM, so NR estimates
  • the frequency offset needs to be adjusted as soon as possible, and in order to avoid the influence of the unstable frequency offset during VCO adjustment, NR adjusts the VCO within the CP range of OFDM Symbol.
  • the time between the cards may not be synchronized. At this time, the adjustment of the VCO by any card may affect the ongoing transmission and reception of the other card.
  • the embodiment of the present application provides a frequency offset control method, through which only one crystal oscillator or PLL can be used to ensure the frequency offset tracking performance of the card where the NR is located and without GAP, No matter whether each mode of each card is synchronized or not, through the VCO adjustment control selection of multi-mode and multi-card, and the joint frequency offset adjustment of VCO and NCO, the impact on the transceiver performance of each card and each mode is minimized.
  • Fig. 1 is the schematic diagram of a plurality of cards in the multi-card multi-mode terminal that an embodiment of the present application provides, as shown in Fig. 1, multi-card means can install a plurality of multi-mode terminal cards (SIM card, Subscriber Identity Module) on a carrier Or USIM card, Universal Subscriber Identity Model).
  • SIM card Subscriber Identity Module
  • a multi-mode multi-card terminal can be installed with card 1, card 2, ..., card n, where n is a positive integer greater than or equal to 2.
  • Multi-mode means that each of the multiple terminal cards installed in the terminal can be a multi-mode scenario.
  • any terminal card in card 1, card 2, ..., card n can reside in the 5G network, 4G network, 3G network or 2G network.
  • the terminal can be installed with card 1 and card 2, and card 1 currently resides on the 5G network, and card 2 currently resides on the 4G network.
  • card name card 1 card 2 network mode 5G 4G
  • the card with the higher confidence level of the estimated frequency offset value can be given high priority. stage to adjust the VCO. For example: one card is in the physical layer state of IDLE DRX, listening to Paging paging, while the other card is in the physical layer state of Sync search network. Since the frequency offset estimation value during Sync search is not as reliable as that of IDLE DRX, if the Sync search card is used to control VCO adjustment, the frequency offset between the UE and the base station will be relatively large, thereby introducing The time deviation will affect the receiving performance of the card that IDLE DRX listens to Paging.
  • the physical layer state can be subdivided into five physical layer states.
  • the names and definitions of the five physical layer states are shown in Table 2:
  • the priority order of the five physical layer states shown in Table 2 can be set, and the order of the first priority to the fifth priority in the priority order is as follows:
  • C-DRX is the Connect DRX described in Table 2
  • I-DRX is the IDLE DRX described in Table 2.
  • the first priority Non-DRX Connect, the second priority C-DRX and the third priority RA are high priorities
  • the fourth priority I-DRX And the fifth priority Sync is low priority.
  • FIG. 2 is a flow chart of a frequency offset control method provided in another embodiment of the present application. As shown in FIG. 2, the frequency offset control method includes the following steps:
  • Step 201 Obtain the current physical layer state of each terminal card.
  • Step 202 Determine the current physical layer status of all terminal cards, if it is the first situation, execute step 203, and if it is the second situation, execute step 204.
  • Step 203 Obtain the VCO control right by a target terminal card.
  • Step 204 Alternately obtain the control right of the VCO by multiple target terminal cards.
  • Step 205 In the stage where multiple target terminal cards alternately obtain control rights of the VCO to adjust the VCO, the task execution mode between each target terminal card can be determined. If the task execution mode between cards is a serial time-division mode, Then execute step 206, and execute step 207 if the task execution mode between cards is parallel and simultaneous.
  • Step 206 The terminal card that is executing the task among all the terminal cards obtains the control right of the VCO.
  • Step 207 Determine whether there is only one terminal card whose network mode has the highest priority among all the terminal cards that need to obtain the VCO control right alternately, if so, go to step 208, otherwise go to step 209.
  • Step 208 The one with the highest priority in the network mode obtains the control right of the VCO.
  • Step 209 The one with the highest priority in the combined result obtains the control right of the VCO.
  • the respective physical layer states of each terminal card within the same time period may be acquired.
  • two terminal cards are installed in the terminal, namely card 1 and card 2, and the current physical layer states of card 1 and card 2 are respectively obtained.
  • the current physical layer state of card 1 is Sync
  • the priority corresponding to the current physical layer status of card 1 is the fifth priority
  • the current physical layer status of card 2 is C-DRX (Connect DRX)
  • the corresponding priority of the current physical layer status of card 2 is Second priority.
  • the physical layer states of all terminal cards can be combined, and the combined situation of the physical layer states can be determined, wherein, the physical layer states of all terminal cards installed in the terminal can be combined Including the first case and the second case.
  • the physical layer states of all terminal cards installed in the terminal it is determined that the current situation is the first situation or the second situation.
  • a target terminal card is determined, and the target terminal The card obtains the VCO control right; and when the current situation is the second situation, determine multiple target terminal cards, and the multiple target terminal cards alternately obtain the VCO control right.
  • FIG. 3 is a road map for determining the VCO control right provided by another embodiment of the present application. As shown in Figure 3, the road for determining the VCO control right includes the following steps:
  • Step 301 Determine whether there is a low-priority physical layer state in the physical layer state of each terminal card. According to the determination result, if there is no low-priority physical layer state, then perform step 302, and if there is a low-priority physical layer state, then perform step 301. 303.
  • Step 302 Each terminal card obtains the VCO control right alternately.
  • Step 303 Determine whether there is a high-priority physical layer state in the physical layer state of each terminal card. According to the determination result, if there is a high-priority physical layer state, then perform step 304, and if there is no high-priority physical layer state, then perform step 307 .
  • Step 304 Determine whether there is only one high priority in the physical layer status of each terminal card. According to the determination result, if there is only one high priority, then perform step 305, and if there is not only one high priority, then perform step 306.
  • Step 305 The terminal card in the high-priority physical layer state obtains the VCO control right.
  • Step 306 Multiple terminal cards currently in high-priority physical layer state alternately obtain VCO control rights.
  • Step 307 Determine whether the physical layer states of each terminal card are the same, according to the determination result, if the physical layer states of each terminal card are the same, then perform step 302, if the physical layer states of each terminal card are not all the same, then perform step 308.
  • Step 308 Determine whether there is only one fourth priority in the physical layer state of each terminal card, according to the determination result, if there is only one fourth priority in the physical layer state of each terminal card, then perform step 309, if each terminal card has If there is not only one fourth priority in the physical layer state, step 310 is executed.
  • Step 309 A terminal card that is currently in the fourth priority physical layer state obtains the VCO control right.
  • Step 310 The multiple terminal cards currently in the physical layer state of the fourth priority obtain the control right of the VCO.
  • the control right of VCO can be allocated according to the physical layer status of each card in the same time period , taking the installation of two terminal cards in the terminal as an example, the process of determining the above-mentioned VCO control right is described, as shown in Table 3:
  • steps 205 to 209 after the VCO control right is determined in the above-mentioned manner, and it is determined to pass "alternately obtain the VCO control right" (that is, alternate control), in a certain multi-mode multi-card physical Under the layer state combination, it is also possible to further determine how to alternately obtain the VCO control right according to the task execution of each terminal card.
  • alternate control can be divided into the following two situations:
  • the task execution mode of the terminal card is an alternate control mode under the serial time-division mode
  • the task execution mode of the terminal card is an alternate control mode under parallel simultaneous mode.
  • the serial time-division mode is that the tasks between cards are performed in serial time-division, and then in the serial time-division mode, which card's task is currently being executed, the VCO is obtained by the card that is performing the task.
  • Control right so as to realize alternately obtaining VCO control right.
  • the choice of the VCO control right is set to alternate control to reduce the complexity of implementation, because at this time the residual frequency offset is not large and has little impact on performance.
  • the Sync search network of all cards can only adjust NCO.
  • the tasks between the cards are executed in parallel and simultaneously, and then in the parallel simultaneous mode, it is necessary to consider the network mode and the physical layer state of these concurrent cards, and give priority to the network mode , and secondly consider the state of the physical layer, so that there is no need to use GAP, thereby reducing the impact on transceiver performance and services.
  • the priority of the physical layer status has been given above, and the priority of the mode is: 5G>4G>3G>2G.
  • the terminal is equipped with two terminal cards, namely card 1 and card 2, which are determined through the determination method of the above-mentioned VCO control right to obtain that card 1 and card 2 perform alternate control operations in parallel and simultaneous mode. Further, it can be determined according to the current network mode of card 1 and card 2 that among all the terminal cards that need to alternately obtain VCO control rights, whether there is currently only one terminal card with the highest priority in the network mode, specifically, currently determine that card 1 Residing in the 5G network, while card 2 is currently residing in the 4G network, at this time card 1 obtains the VCO control right, and when card 1 and card 2 alternately obtain the VCO control right, if the priority of the network mode of card 2 appears If the priority of the network mode is higher than that of card 1, it alternates to card 2 to obtain the VCO control right.
  • card 1 and card 2 in parallel simultaneous mode if the network mode of card 1 and/or card 2 changes, it can be determined which card obtains the VCO control right according to the changed network mode. For example, after the network mode changes, card 1 resides on the 4G network, while card 2 resides on the 5G network, then card 2 obtains the VCO control right. Further, the alternate control of the terminal card in the parallel simultaneous mode is realized.
  • card 1 and card 2 are in the same network mode, for example, card 1 currently resides in the 5G network, and card 2 also currently resides in the 5G network, in this case It can be further determined that the priority of the current physical layer status of card 1 and card 2 is higher, and the one with the highest priority obtains the VCO control right. For example, both card 1 and card 2 currently reside in the 5G network, and the card If the physical layer state of card 1 is Connect DRX (second priority) and the physical layer state of card 2 is Sync (fifth priority), it can be determined that card 1 obtains the VCO control right.
  • frequency offset adjustment may be performed according to the selection result of the VCO control right.
  • the frequency offset estimation value can be directly adjusted to the VCO, while the frequency offset tracking of other cards needs to adjust the uplink/downlink NCO, and the frequency offset adjustment value of the uplink/downlink NCO needs to use the following formula:
  • the card's cumulative frequency offset estimation value includes the sum of the card's VCO and NCO cumulative adjustments; and the cumulative VCO adjustment value refers to the sum of all card-to-VCO adjustments.
  • the frequency offset control method provided by the embodiment of the present application can adjust and control through the multi-mode and multi-card VCO on the premise of ensuring the frequency offset tracking performance of the card where the NR is located and not using GAP, regardless of whether each mode of each card is synchronized. Weight selection, as well as the joint frequency offset adjustment of VCO and NCO, minimize the impact on the transceiver performance of each card and each mode.
  • FIG. 4 is a schematic structural diagram of a frequency offset control device provided in another embodiment of the present application. As shown in FIG. When loaded and executed by the processor 401, the method for controlling the frequency offset provided by the embodiment shown in FIG. 2 or the method for determining the VCO control right provided by the embodiment shown in FIG. 3 are implemented. In an implementation manner, the frequency offset control device provided in the embodiment shown in FIG. 4 may be a chip.
  • Another embodiment of the present application also provides a chip, the chip is connected to a memory, or the chip is integrated with a memory, and when the program or instruction stored in the memory is executed, the implementation provided by the embodiment shown in Figure 2 is realized.
  • the frequency offset control method or the method for determining the VCO control right provided by the embodiment shown in FIG. 3 .
  • Another embodiment of the present application further provides a terminal, where the terminal includes a terminal body and the frequency offset control device provided in the embodiment shown in FIG. 4 .
  • Still another embodiment of the present application further provides a terminal, which includes a terminal body and the aforementioned chip connected to the memory.
  • Another embodiment of the present application also provides a computer storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the frequency offset control method provided by the embodiment shown in FIG. 2 or the frequency offset control method provided by the embodiment shown in FIG. 3 is implemented. VCO control right determination method.
  • the application may be an application program (nativeApp) installed on the terminal, or may also be a web page program (webApp) of a browser on the terminal, which is not limited in this embodiment of the present application.
  • nativeApp application program
  • webApp web page program
  • the disclosed system, device and method can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined Or it can be integrated into another system, or some features can be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.
  • the above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium.
  • the above-mentioned software functional units are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) or a processor (Processor) to execute the methods described in various embodiments of the present application. partial steps.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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Abstract

本申请实施例提供一种频偏控制方法及装置、终端、存储介质，所述方法包括：获取每张终端卡的当前物理层状态；确定所有终端卡的当前物理层状态的情况，所述所有终端卡的当前物理层状态的情况包括第一情况和第二情况，若所述当前物理层状态的情况为所述第一情况则由一张目标终端卡获取VCO控制权，若所述当前物理层状态的情况为所述第二情况则由多张目标终端卡交替获取VCO控制权；以及根据VCO控制权获取结果进行频偏调整。可以在确保NR所在那张卡的频偏跟踪性能且不打GAP的前提下，不论各卡各模式间是否同步，通过多模多卡的VCO调整控制权选择，以及VCO与NCO的联合频偏调整，最大程度降低对各卡各模式收发性能的影响。

Description

频偏控制方法及装置、终端、存储介质 技术领域
本申请涉及通信技术领域，尤其涉及一种频偏控制方法及装置、终端、存储介质。
背景技术
在移动通信终端进行多模多卡的频偏控制过程中，新空口(New Radio，NR)所在那张卡与其它卡都有各自的频偏调整量与配置时序，如仅采用一个crystal晶振或锁相环(Phase-locked loops，PLL),并且NR的循环前缀(Cyclic Prefix，CP)范围与其它卡的收发时间出现重叠(Overlap)，当NR所在那张卡在CP范围内进行频偏调整时，就会对其它卡的收发性能产生影响，需要对多模多卡下NR与其它卡的频偏控制进行针对性的处理。
一般情况下，常规的处理是：一种是让NR所在的那张卡调整电压控制(压控)振荡器(Voltage Controlled Oscillator，VCO)，其它卡则仅调整数字控制(数控)振荡器(Numerically Controlled Oscillator，NCO)，其缺点是对其它卡的收发性能影响较大；另一种则是所有卡都只调整NCO，但由于crystal晶振或PLL上有残留频偏，导致NR Slot或LTE TTI等各模式的时域帧长度不准，长时间累积就会引入较大时偏；再一种则是将各卡业务的收发时间错开，各自维护频偏控制字，缺点则是各卡之间需要打孔(GAP)，对被打孔那张卡的收发性能甚至业务影响较大，进而影响用户体验。
申请内容
本申请实施例提供一种频偏控制方法及装置、终端、存储介质，通过该频偏控制方法可以在确保NR所在那张卡的频偏跟踪性能且不打GAP的前提下，不论各卡各模式间是否同步，通过多模多卡的VCO调整控制权选择，以及VCO与NCO的联合频偏调整，最大程度降低对各卡各模式收发性能的影响。
第一方面，本申请实施例提供一种频偏控制方法，所述方法包括：获取每张终端卡的当前物理层状态；确定所有终端卡的当前物理层状态的情况，所述所有终端卡的当前物理层状态的情况包括第一情况和第二情况，若所述当前物理层状态的情况为所述第一情况则由一张目标终端卡获取VCO控制权，若所述当前物理层状态的情况为所述第二情况则由多张目标终端卡交替获取VCO控制权；以及根据VCO控制权获取结果进行频偏调整。
进一步地，所述获取每张终端卡的当前物理层状态包括：获取每张终端卡的当前物理层状态为搜网状态(Sync)、接收寻呼状态(IDLE DRX)、随机接入状态(RA接入)、连接态DRX(Connect DRX)或是未进入连接态(Non-DRX Connect)；其中，所述搜网状态、所述接收寻呼状态、所述随机接入状态、所述连接态DRX和所述未进入连接态的优先级依次为第五优先级、第四优先级、第三优先级、第二优先级和第一优先级，并且所述第五优先级和所述第四优先级对应的物理层状态为低优先级物理层状态，所述第三优先级、第二优先级和第一优先级对应的物理层状态为高优先级物理层状态。
进一步地，所述确定所有终端卡的当前物理层状态的情况，所述所有终端卡的当前物理层状态的情况包括第一情况和第二情况包括：确定各个终端卡的当前物理层状态中是否存在所述低优先级物理层状态，若各个终端卡的物理层状态中不存在所述低优先级物理层状态，则确定当前各个终端卡的物理层状态属于第一组合状态；若各个终端卡的当前物理层状态中存在所述低优先级物理层状态，则确定各个终端卡的当前物理层状态中是否存在所述高优先级物理层状态，若各个终端卡的物理层状态中存在所述高优先级物理层状态，并且只有一个所述高优先级物理层状态，则确定当前各个终端卡的物理层状态属于第二组合状态，若各个终端卡的物理层状态中存在所述高优先级物理层状态，并且有至少两个所述高优先级物理层状态，则确定当前各个终端卡的物理层状态属于第三组合状态；若各个终端卡的当前物理层状态中不存在所述低优先级物理层状态，则确定各个终端卡的当前物理层状态是否均相同，若各个终端卡的当前物理层状态均相同，则确定当前各个终端卡的物理层状态属于第四组合状态，若各个终端卡的当前物理层状态不相同，则确定各个终端卡的当前物理层状态中是否只有一个所述第四优先级的物理层状态，若各个终端卡的当前物理层状态中只有一个所述第四优先级的物理层状态，则确定当前各个终端卡的物理层状态属于第五组合状态，若各个终端卡的当前物理层状态中由至少两个所述第四优先级的物理层状态，则确定当前各个终端卡的物理层状态属于第六组合状态；其中，当前物理层状态的所述第一情况包括所述第二组合状态或所述第五组合状态，当前物理层状态的所述第二情况包括所述第一组合状态、第三组合状态、第四组合状态或第六组合状态。
进一步地，所述若所述当前物理层状态的情况为所述第一情况则由一张目标终端卡获取VCO控制权包括：若当前物理层状态的所述第一情况包括所述第二组合状态，则由所有终端卡中唯一的高优先级物理层状态对应的终端卡获取VCO控制权；或者若当前物理层状态的所述第一情况包括所述第五组合状态，则所有终端卡中唯一的第四优先级物理层状态对应的终端卡获取VCO控制权。
进一步地，若所述当前物理层状态的情况为所述第二情况则由多张目标终端卡交替获取VCO控制权包括：若当前物理层状态的所述第二情况包括所述第一组合状态，由各个终端卡交替获取VCO控制权；若当前物理层状态的所述第二情况包括所述第三组合状态，由所有终端卡中各个高优先级物理层状态对应的终端卡交替获取VCO控制权；若当前物理层状态的所述第二情况包括所述第四组合状态，由各个终端卡交替获取VCO控制权；或者若当前物理层状态的所述第二情况包括所述第六组合状态，由所有终端卡中各个所述第四优先级的物理层状态对应的终端卡交替获取VCO控制权。
进一步地，在所述若所述当前物理层状态的情况为所述第二情况则由多张目标终端卡交替获取VCO控制权之后，还包括：若确定交替获取VCO控制权的各个终端卡之间的任务执行模式为串行时分模式，则由当前正在执行任务的终端卡获取VCO控制权；或者若确定交替获取VCO控制权的各个终端卡之间的任务执行模式为并行同时模式，则根据交替获取VCO控制权的各个终端卡的网络模式确定当前获取VCO控制权的终端卡。
进一步地，所述若确定交替获取VCO控制权的各个终端卡之间的任务执行模式为并行同时模式，则根据交替获取VCO控制权的各个终端卡的网络模式确定当前获取VCO控制权的终端卡包括：确定交替获取VCO控制权的各个终端卡中是否只有一张终端卡的网络模式的优先级最高，若只有一张终端卡的网络模式的优先级最高，则由网络模式的优先级最 高的终端卡获取VCO控制权，若至少两张终端卡的网络模式的优先级最高，则由网络模式的优先级最高的至少两张终端卡中物理层状态的优先级最高者对应的终端卡获取VCO控制权。
第二方面，本申请实施例还提供一种频偏控制装置，所述装置包括：处理器和存储器，所述存储器用于存储至少一条指令，所述指令由所述处理器加载并执行时以实现第一方面提供的频偏控制方法。在一种实施方式中，第二方面提供的频偏控制装置可以为一种芯片或芯片模组。
第三方面，本申请再一个实施例还提供一种芯片，所述芯片与存储器相连，或者所述芯片上集成有存储器(如第二方面提供的频偏控制装置)，当所述存储器中存储的程序或指令被执行时，实现第一方面提供的频偏控制方法。
第四方面本申请实施例提供一种终端，该终端包括终端本体以及第二方面提供的频偏控制装置。
第五方面，本申请另一个实施例还提供一种终端，该终端包括终端本体以及第三方面提供的芯片。
第六方面，本申请实施例还提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现第一方面提供的频偏控制方法。
通过上述技术方案，可以在确定所有终端卡的当前物理层状态的情况后，若所述当前物理层状态的情况为所述第一情况则由一张目标终端卡获取VCO控制权，若所述当前物理层状态的情况为所述第二情况则由多张目标终端卡交替获取VCO控制权，并根据VCO控制权获取结果进行频偏调整。可以在确保NR所在那张卡的频偏跟踪性能且不打GAP的前提下，不论各卡各模式间是否同步，通过多模多卡的VCO调整控制权选择，以及VCO与NCO的联合频偏调整，最大程度降低对各卡各模式收发性能的影响。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本申请一个实施例提供多卡多模终端中多个卡的示意图；
图2为本申请再一个实施例提供的频偏控制方法的流程图；
图3为本申请再一个实施例提供的确定VCO控制权的流程图；
图4为本申请再一个实施例提供的频偏控制装置的结构示意图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是 本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在现有的处理操作中，终端(如NR终端)在独立组网(Standalone operation mode，SA)或非独立组网(Non-Standalone operation mode，NSA)下进行频偏控制时，会通过调整crystal晶振的电压或锁相环(PLL)来实现频偏的调整，频偏调整配置至生效之前，会有一段频偏不稳定的时间，这段时间NR终端的收发都会受到影响，为此频偏调整都尽量选在正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号(Symbol)(OFDM Symbol)的循环前缀(Cyclic Prefix，CP)范围内进行。由于多模多卡的卡与卡之间，其所处的网络模式、时偏与频偏都未必相同，需要分别进行独立的频偏跟踪与控制，但NR所在那张卡的CP范围可能与其它张卡的收发时刻重叠(Overlap)，此时在NR的CP范围内进行频偏调整时，其产生的那段频偏不稳定时间，可能会对其它张卡的收发性能产生影响。为此，常规的处理是：在多模多卡下进行频偏控制时，一种方法是直接采用多个crystal晶振或多个PLL，使得每张卡的频偏控制相互不约束，但缺点是成本较高；另一种仅采用一个crystal晶振或PLL，并且让NR所在那张卡调整VCO，其它卡调整NCO，但缺点是对其它卡的收发性能影响较大；再有一种就是所有卡都只调整NCO，缺点是crystal晶振或PLL上残留的频偏，会导致NR的调度粒度Slot、LTE的传输时间间隔TTI或其它卡所处模式的帧长度不准，从而引入时偏；还有一种就是将各卡业务的收发时间错开，各自维护频偏控制字，缺点则是各卡之间需要打孔，对被打孔那张卡的收发影响较大，进而影响用户体验。
根据3GPP协议38.101-1第6.4.1节的描述，NR的UE载波频率与基站载波频率之间，其频率偏差需满足协议的要求，即：不能超过+/-0.1PPM，故NR在估计出频偏时，需要尽快调整掉，并且为避免VCO调整时频偏不稳定那段的影响，NR对VCO的调整都放在OFDM Symbol的CP范围内进行。但是，多模多卡场景下各卡之间的时间未必同步，此时任意一张卡对VCO的调整就可能对另一张卡上正在进行的收发产生影响。
为克服上述技术问题，本申请实施例提供一种频偏控制方法，通过该方法可以在仅采用一个crystal晶振或PLL，确保NR所在那张卡的频偏跟踪性能且不打GAP的前提下，不论各卡各模式间是否同步，通过多模多卡的VCO调整控制权选择，以及VCO与NCO的联合频偏调整，最大程度降低对各卡各模式收发性能的影响。
本申请实施例提供的频偏控制方法可以适用于多模多卡的终端，其中，多模多卡表示终端再多卡的前提下，每张卡上又可以是多模的场景。图1为本申请一个实施例提供的多卡多模终端中多个卡的示意图，如图1所示，多卡表示可以在一个载体上安装多张多模终端卡(SIM卡，Subscriber Identity Module或USIM卡，Universal Subscriber Identity Model)。多模多卡的终端可以安装卡1、卡2、…，卡n，n为大于等于2的正整数。即，多模多卡的终端中至少可以安装2张终端卡。多模则表示终端中安装的多张终端卡的每张终端卡均可以是多模的场景，举例来说，卡1、卡2、…，卡n中任意一张终端卡均可以驻留在5G网络、4G网络、3G网络或者2G网络。
以双卡多模手机为例，如表一所示，该终端可以安装卡1和卡2，并且卡1当前驻留在5G网络，卡2当前驻留在4G网络。
表一
卡名称 卡1 卡2
网络模式 5G 4G
在一种实施方式中，在终端使用过程中，由于不同物理层状态下，其所跟踪与维护的频偏估计值置信度不同，只有频偏估计值置信度高的那张卡，才能高优先级调整VCO。比如：一张卡处在IDLE DRX的物理层状态，在听Paging寻呼，而另一张卡却处在Sync搜网的物理层状态。由于Sync搜网时频偏估计值没有IDLE DRX的频偏估计值置信度高，故如果采用Sync搜网那张卡控制VCO调整的话，就会导致UE与基站侧的频偏较大，从而引入时偏，造成IDLE DRX听Paging的那张卡接收性能产生影响。因此，需要先将每张卡所处的物理层状态进行细分，按照频偏估计值的置信度以及对频偏控制影响的大小，可以考虑将物理层状态细分为五种物理层状态，该五种物理层状态的名称和定义如表二所示：
表二
Figure PCTCN2021141458-appb-000001
进一步地，根据频偏估计值的精确度，可以设置表二所示的五种物理层状态的优先级顺序，且该优先级顺序中第一优先级至第五优先级的排序如下所示：
Non-DRX Connect>C-DRX>RA>I-DRX>Sync
其中，C-DRX为表二所述的Connect DRX，I-DRX为表二所述的IDLE DRX。进一步地，该第一优先级至第五优先级中，第一优先级Non-DRX Connect、第二优先级C-DRX以及第三优先级RA为高优先级，且第四优先级I-DRX和第五优先级Sync为低优先级。
需要说明的是，本申请中对物理层状态的划分不限于图2所示的五种状态，还可以根据需求进一步细分。
图2为本申请再一个实施例提供的频偏控制方法的流程图，如图2所示，该频偏控制方法包括以下步骤：
步骤201：获取每张终端卡的当前物理层状态。
步骤202：确定所有终端卡的当前物理层状态的情况，若为第一情况则执行步骤203，若为第二情况则执行步骤204。
步骤203：由一张目标终端卡获取VCO控制权。
步骤204：由多张目标终端卡交替获取VCO控制权。
步骤205：在多张目标终端卡交替获取VCO控制权以调整VCO的阶段，可以确定各个目标终端卡之间的任务执行模式，若卡与卡之间的任务执行模式为串行时分的模式，则执行步骤206，若卡与卡之间的任务执行模式为并行同时的方式，则执行步骤207。
步骤206：由所有终端卡中正在执行任务的终端卡获取VCO控制权。
步骤207：确定所有需要进行交替获取VCO控制权的终端卡中当前是否只有一张终端卡的网络模式的优先级最高，若是则进入步骤208，若否则进入步骤209。
步骤208：由网络模式的优先级最高者获取VCO控制权。
步骤209：由组合结果中优先级最高者获得VCO控制权。
在步骤201的具体实施中，可以获取每个终端卡在相同时间段内分别所处的物理层状态。举例来说，终端内安装两张终端卡，分别为卡1和卡2，并分别获取卡1和卡2当前所处的物理层状态，根据获取结果得知，卡1当前的物理层状态为Sync，且卡1当前的物理层状态对应的优先级为第五优先级，而卡2当前的物理层状态为C-DRX(Connect DRX)，且卡2当前的物理层状态对应的优先级为第二优先级。
在步骤202～步骤204的具体实施中，可以将所有终端卡的物理层状态进行组合，并确定物理层状态的组合后的情况，其中，终端内安装的所有终端卡的物理层状态组合后可以包括第一情况下和第二情况。在终端内安装的所有终端卡的物理层状态组合后确定当前情况为第一情况或是第二情况，在当前情况为第一情况时，确定一张目标终端卡，并由该一张目标终端卡获取VCO控制权；并在当前情况为第二情况时，确定多张目标终端卡，由该多张目标终端卡交替获取VCO控制权。
其中，上述步骤202～步骤204具体为VCO控制权的确定过程。图3为本申请再一个实施例提供的确定VCO控制权的路程图，如图3所示，确定VCO控制权的路程包括以下步骤：
步骤301：确定各个终端卡的物理层状态中是否存在低优先级物理层状态，根据确定结果，若不存在低优先级物理层状态则执行步骤302，若存在低优先级物理层状态则执行步骤303。
步骤302：各个终端卡交替获取VCO控制权。
步骤303：确定各个终端卡的物理层状态是否存在高优先级物理层状态，根据确定结果，若存在高优先级物理层状态则执行步骤304，若不存在高优先级物理层状态则执行步骤307。
步骤304：确定各个终端卡的物理层状态中是否只有一个高优先级，根据确定结果，若只有一个高优先级则执行步骤305，若并非只有一个高优先级则执行步骤306。
步骤305：由该一个高优先级物理层状态的终端卡获取VCO控制权。
步骤306：由当前为高优先级物理层状态的多个终端卡交替获取VCO控制权。
步骤307：确定各个终端卡的物理层状态是否均相同，根据确定结果，若各个终端卡的物理层状态均相同则执行步骤302，若各个终端卡的物理层状态并非均相同则执行步骤308。
步骤308：确定各个终端卡的物理层状态中是否只有一个第四优先级，根据确定结果，若各个终端卡的物理层状态中只有一个第四优先级，则执行步骤309，若各个终端卡的物理层状态中并非只有一个第四优先级，则执行步骤310。
步骤309：由当前为第四优先级物理层状态的一个终端卡获取VCO控制权。
步骤310：由当前为第四优先级物理层状态的多个终端卡获取VCO控制权。
由于以上物理层状态的优先级，适用于2G/3G/4G/5G等，故在多模多卡时，可以依据每张卡在相同时间段里分别所处的物理层状态分配VCO的控制权，以终端中安装两张终端卡为例，对上述VCO控制权的确定过程进行说明，具体如表三所示：
表三
Figure PCTCN2021141458-appb-000002
在步骤205～步骤209的具体实施中，在通过上述方式确定VCO控制权后，并且确定通过“交替获取VCO控制权”(即，交替控制)的情况下，在某个多模多卡的物理层状态组合下，还可以根据每张终端卡任务执行的情况，进一步确定如何进行交替获取VCO控制权。其中上述“交替控制”可分为以下两种情况：
1、终端卡任务执行模式为串行时分模式下的交替控制方式；
2、终端卡任务执行模式为并行同时模式下的交替控制方式。
其中，所述串行时分模式为卡与卡之间任务是串行时分执行的，进而在串行时分模式下，当前哪张卡的任务在执行，就由正在执行任务的那张卡取得VCO控制权，从而实现交替获得VCO控制权。对于有上行发送的物理层状态，将VCO控制权的选择设置为交替控制，是为了降低实现的复杂度，因为此时频偏的残留已不大，对性能影响较小。而对于所有卡都处于Sync的场景，此时所有卡的Sync搜网可以都只调整NCO。
其中，所述并行同时模式下为卡与卡之间任务是并行同时执行的，进而在并行同时模式下，需要考虑这些存在并发情况的卡所处的网络模式以及物理层状态，优先考虑网络模式，其次考虑物理层状态，这样就不需要打GAP，从而降低对收发性能以及业务的影响。其中，物理层状态优先级前面已给出，而模式的优先级则为：5G>4G>3G>2G。
举例来说，终端安装有两张终端卡，分别为卡1和卡2，通过上述VCO控制权的确定方式确定得到卡1和卡2进行并行同时模式下的交替控制操作。进一步地可以根据卡1和卡2当前所处的网络模式确定所有需要进行交替获取VCO控制权的终端卡中当前是否只有一张终端卡的网络模式的优先级最高，具体地，当前确定卡1驻留在5G网络中，而卡2当前驻留在4G网络中，此时卡1获取VCO控制权，在卡1和卡2交替获取VCO控制权阶段，若出现卡2的网络模式的优先级高于卡1的网络模式的优先级，则交替到卡2获取VCO控制权。在卡1和卡2在并行同时模式下的交替控制阶段，若出现卡1和/或卡2的网络模式出现变化，则可以根据变化后的网络模式确定由哪张卡获取VCO控制权。例如， 在网络模式变化后，卡1驻留在4G网络，而卡2驻留在5G网络，则由卡2获取到VCO控制权。进而实现终端卡在并行同时模式下的交替控制。
在根据当前所处的网络模式确定卡1和卡2所处的网络模式相同时，如，卡1当前驻留在5G网络中，并且卡2当前也驻留在5G网络中，在此情况下可以进一步确定卡1和卡2当前的物理层状态的优先权那一者更高，并且由优先级最高者获得VCO控制权，如卡1和卡2当前均驻留在5G网络中，且卡1的物理层状态为Connect DRX(第二优先级)而卡2的物理层状态为Sync(第五优先级)，则可以确定卡1获取VCO控制权。在卡1和卡2在并行同时模式下的交替控制阶段，并且卡1和卡2所处的网络模式相同时，若出现卡1和/或卡2的物理层状态变化后，则可以根据变化后的物理层状态确定由哪张卡获取VCO控制权。
通过上述方式确定VCO控制权选择结果后，可以根据该VCO控制权选择结果进行频偏调整。具体地，可以直接将频偏估计值调整至VCO，而其它卡的频偏跟踪则需要调整上/下行NCO，其在上/下行NCO的频偏调整值，则需要采用如下公式：
获取VCO控制权的卡上/下行NCO实际调整值＝该获取VCO控制权的卡累积频偏估计值–累积VCO调整值
其中，该卡累积频偏估计值，包括该卡的VCO与NCO累积调整量之和；而累积VCO调整值，则指所有卡对VCO调整量之和。这样，通过将VCO调整量补偿至各卡的NCO调整量中，就能最大限度地降低VCO调整对其它卡的影响，并确保各卡频偏跟踪的独立性。
通过本申请实施例提供的频偏控制方法可以在确保NR所在那张卡的频偏跟踪性能且不打GAP的前提下，不论各卡各模式间是否同步，通过多模多卡的VCO调整控制权选择，以及VCO与NCO的联合频偏调整，最大程度降低对各卡各模式收发性能的影响。
图4为本申请再一个实施例提供的频偏控制装置的结构示意图，如图4所示，该装置可以包括处理器401和存储器402，所述存储器402用于存储至少一条指令，所述指令由所述处理器401加载并执行时以实现图2所示实施例提供的频偏控制方法或图3所示实施例提供的VCO控制权确定方法。在一种实施方式中，图4所示实施例提供的频偏控制装置可以为一种芯片。
本申请另一个实施例还提供一种芯片，该芯片与存储器连接，或者所述芯片上集成有存储器，当所述存储器中存储的程序或指令被执行时，实现图2所示实施例提供的频偏控制方法或图3所示实施例提供的VCO控制权确定方法。
本申请再一个实施例还提供一种终端，该终端包括终端本体以及图4所示实施例提供的频偏控制装置。
本申请再一个实施例还提供一种终端，该终端包括终端本体和上述与存储器连接的芯片。
本申请再一个实施例还提供一种计算机存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现图2所示实施例提供的频偏控制方法或图3所示实施例提供的VCO控制权确定方法。
可以理解的是，所述应用可以是安装在终端上的应用程序(nativeApp)，或者还可以是终端上的浏览器的一个网页程序(webApp)，本申请实施例对此不进行限定。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如，多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机装置(可以是个人计算机，服务器，或者网络装置等)或处理器(Processor)执行本申请各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (10)

  1. 一种频偏控制方法，其特征在于，所述方法包括：
    获取每张终端卡的当前物理层状态；
    确定所有终端卡的当前物理层状态的情况，所述所有终端卡的当前物理层状态的情况包括第一情况和第二情况，若所述当前物理层状态的情况为所述第一情况则由一张目标终端卡获取VCO控制权，若所述当前物理层状态的情况为所述第二情况则由多张目标终端卡交替获取VCO控制权；以及
    根据VCO控制权获取结果进行频偏调整。
  2. 根据权利要求1所述的方法，其特征在于，所述获取每张终端卡的当前物理层状态包括：
    获取每张终端卡的当前物理层状态为搜网状态、接收寻呼状态、随机接入状态、连接态DRX或是未进入连接态；
    其中，所述搜网状态、所述接收寻呼状态、所述随机接入状态、所述连接态DRX和所述未进入连接态的优先级依次为第五优先级、第四优先级、第三优先级、第二优先级和第一优先级，并且所述第五优先级和所述第四优先级对应的物理层状态为低优先级物理层状态，所述第三优先级、第二优先级和第一优先级对应的物理层状态为高优先级物理层状态。
  3. 根据权利要求2所述的方法，其特征在于，所述确定所有终端卡的当前物理层状态的情况，所述所有终端卡的当前物理层状态的情况包括第一情况和第二情况包括：
    确定各个终端卡的当前物理层状态中是否存在所述低优先级物理层状态，若各个终端卡的物理层状态中不存在所述低优先级物理层状态，则确定当前各个终端卡的物理层状态属于第一组合状态；
    若各个终端卡的当前物理层状态中存在所述低优先级物理层状态，则确定各个终端卡的当前物理层状态中是否存在所述高优先级物理层状态，若各个终端卡的物理层状态中存在所述高优先级物理层状态，并且只有一个所述高优先级物理层状态，则确定当前各个终端卡的物理层状态属于第二组合状态，若各个终端卡的物理层状态中存在所述高优先级物理层状态，并且有至少两个所述高优先级物理层状态，则确定当前各个终端卡的物理层状态属于第三组合状态；
    若各个终端卡的当前物理层状态中不存在所述低优先级物理层状态，则确定各个终端卡的当前物理层状态是否均相同，若各个终端卡的当前物理层状态均相同，则确定当前各个终端卡的物理层状态属于第四组合状态，若各个终端卡的当前物理层状态不相同，则确定各个终端卡的当前物理层状态中是否只有一个所述第四优先级的物理层状态，若各个终端卡的当前物理层状态中只有一个所述第四优先级的物理层状态，则确定当前各个终端卡的物理层状态属于第五组合状态，若各个终端卡的当前物理层状态中由至少两个所述第四优先级的物理层状态，则确定当前各个终端卡的物理层状态属于第六组合状态；
    其中，当前物理层状态的所述第一情况包括所述第二组合状态或所述第五组合状态，当前物理层状态的所述第二情况包括所述第一组合状态、第三组合状态、第四组合状态或第六组合状态。
  4. 根据权利要求3所述的方法，其特征在于，所述若所述当前物理层状态的情况为所述第一情况则由一张目标终端卡获取VCO控制权包括：
    若当前物理层状态的所述第一情况包括所述第二组合状态，则由所有终端卡中唯一的高优先级物理层状态对应的终端卡获取VCO控制权；或者
    若当前物理层状态的所述第一情况包括所述第五组合状态，则所有终端卡中唯一的第四优先级物理层状态对应的终端卡获取VCO控制权。
  5. 根据权利要求3所述的方法，其特征在于，若所述当前物理层状态的情况为所述第二情况则由多张目标终端卡交替获取VCO控制权包括：
    若当前物理层状态的所述第二情况包括所述第一组合状态，由各个终端卡交替获取VCO控制权；
    若当前物理层状态的所述第二情况包括所述第三组合状态，由所有终端卡中各个高优先级物理层状态对应的终端卡交替获取VCO控制权；
    若当前物理层状态的所述第二情况包括所述第四组合状态，由各个终端卡交替获取VCO控制权；或者
    若当前物理层状态的所述第二情况包括所述第六组合状态，由所有终端卡中各个所述第四优先级的物理层状态对应的终端卡交替获取VCO控制权。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，在所述若所述当前物理层状态的情况为所述第二情况则由多张目标终端卡交替获取VCO控制权之后，还包括：
    若确定交替获取VCO控制权的各个终端卡之间的任务执行模式为串行时分模式，则由当前正在执行任务的终端卡获取VCO控制权；或者
    若确定交替获取VCO控制权的各个终端卡之间的任务执行模式为并行同时模式，则根据交替获取VCO控制权的各个终端卡的网络模式确定当前获取VCO控制权的终端卡。
  7. 根据权利要求6所述的方法，其特征在于，所述若确定交替获取VCO控制权的各个终端卡之间的任务执行模式为并行同时模式，则根据交替获取VCO控制权的各个终端卡的网络模式确定当前获取VCO控制权的终端卡包括：
    确定交替获取VCO控制权的各个终端卡中是否只有一张终端卡的网络模式的优先级最高，若只有一张终端卡的网络模式的优先级最高，则由网络模式的优先级最高的终端卡获取VCO控制权，若至少两张终端卡的网络模式的优先级最高，则由网络模式的优先级最高的至少两张终端卡中物理层状态的优先级最高者对应的终端卡获取VCO控制权。
  8. 一种频偏控制装置，其特征在于，所述装置包括：
    处理器和存储器，所述存储器用于存储至少一条指令，所述指令由所述处理器加载并执行时以实现如权利要求1-7中任意一项所述的频偏控制方法。
  9. 一种终端，其特征在于，所述终端包括权利要求8所述的频偏控制装置。
  10. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1-7中任意一项所述的频偏控制方法。
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