CN113132288A - Frequency offset control method and device, terminal and storage medium - Google Patents
Frequency offset control method and device, terminal and storage medium Download PDFInfo
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- CN113132288A CN113132288A CN202110668881.4A CN202110668881A CN113132288A CN 113132288 A CN113132288 A CN 113132288A CN 202110668881 A CN202110668881 A CN 202110668881A CN 113132288 A CN113132288 A CN 113132288A
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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
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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Abstract
The embodiment of the application provides a frequency offset control method and device, a terminal and a storage medium, wherein the method comprises the following steps: acquiring the current physical layer state of each terminal card; determining the current physical layer state conditions of all terminal cards, wherein the current physical layer state conditions of all terminal cards comprise a first condition and a second condition, if the current physical layer state conditions are the first condition, a target terminal card acquires VCO control right, and if the current physical layer state conditions are the second condition, a plurality of target terminal cards alternately acquire VCO control right; and adjusting the frequency offset according to the VCO control right acquisition result. On the premise of ensuring the frequency offset tracking performance of the card where NR is located and not punching GAP, the influence on the transceiving performance of each mode of each card is reduced to the maximum extent by the selection of the VCO adjustment control power of the multimode multi-card and the combined frequency offset adjustment of the VCO and the NCO, no matter whether the modes of each card are synchronous or not.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a frequency offset control method and apparatus, a terminal, and a storage medium.
Background
In the process of frequency offset control of a multi-mode multi-card by a mobile communication terminal, a card where a New Radio (NR) is located and other cards all have respective frequency offset adjustment amounts and configuration timings, for example, only one crystal oscillator or Phase-locked loop (PLL) is used, and a Cyclic Prefix (CP) range of the NR overlaps with the transceiving time of the other cards (overlay), when the NR is located and frequency offset adjustment is performed in the CP range, the NR and the frequency offset control of the other cards under the multi-mode multi-card are affected, and targeted processing needs to be performed on the frequency offset control of the NR and the other cards under the multi-mode multi-card.
In general, the conventional treatments are: one is to let the card in which NR is located adjust a Voltage Controlled Oscillator (VCO), and the other cards only adjust a Numerically Controlled Oscillator (NCO), which has a disadvantage of having a large influence on the transceiving performance of the other cards; the other is that all cards only adjust NCO, but because residual frequency offset exists on crystal oscillator or PLL, the time domain frame length of each mode such as NR Slot or LTE TTI is inaccurate, and large time offset is introduced due to long-time accumulation; the other method is to stagger the receiving and sending time of each card service and maintain the frequency offset control word respectively, but the disadvantage is that punching (GAP) is needed between the cards, the receiving and sending performance of the punched card is greatly influenced even the service, and further the user experience is influenced.
Disclosure of Invention
The embodiment of the application provides a frequency offset control method, a frequency offset control device, a terminal and a storage medium, and the frequency offset control method can reduce the influence on the receiving and sending performances of each mode of each card to the maximum extent by adjusting the control right selection of the VCO of a multi-mode multi-card and the joint frequency offset adjustment of the VCO and the NCO no matter whether the modes of each card are synchronous or not on the premise of ensuring the frequency offset tracking performance of the card where NR is located and not printing GAP.
In a first aspect, an embodiment of the present application provides a frequency offset control method, where the method includes: acquiring the current physical layer state of each terminal card; determining the current physical layer state conditions of all terminal cards, wherein the current physical layer state conditions of all terminal cards comprise a first condition and a second condition, if the current physical layer state conditions are the first condition, a target terminal card acquires VCO control right, and if the current physical layer state conditions are the second condition, a plurality of target terminal cards alternately acquire VCO control right; and adjusting the frequency offset according to the VCO control right acquisition result.
Further, the acquiring the current physical layer state of each terminal card includes: acquiring the current physical layer state of each terminal card as a network searching state (Sync), an IDLE paging state (IDLE DRX), a random access state (RA access), a connection state DRX (Connect DRX) or a Non-connection state (Non-DRX Connect); the network searching state, the paging receiving state, the random access state, the connection state DRX and the priority of the non-connection state are sequentially a fifth priority, a fourth priority, a third priority, a second priority and a first priority, a physical layer state corresponding to the fifth priority and the fourth priority is a low-priority physical layer state, and a physical layer state corresponding to the third priority, the second priority and the first priority is a high-priority physical layer state.
Further, the determining the current physical layer states of all the terminal cards, where the current physical layer states of all the terminal cards include a first case and a second case, and the determining includes: determining whether the low-priority physical layer state exists in the current physical layer state of each terminal card, and if the low-priority physical layer state does not exist in the physical layer state of each terminal card, determining that the current physical layer state of each terminal card belongs to a first combination state; if the low-priority physical layer state exists in the current physical layer states of the terminal cards, determining whether the high-priority physical layer state exists in the current physical layer states of the terminal cards, if the high-priority physical layer state exists in the physical layer states of the terminal cards and only one high-priority physical layer state exists, determining that the current physical layer state of the terminal cards belongs to a second combination state, and if the high-priority physical layer state exists in the physical layer states of the terminal cards and at least two high-priority physical layer states exist, determining that the current physical layer state of the terminal cards belongs to a third combination state; if the low-priority physical layer state does not exist in the current physical layer states of the terminal cards, determining whether the current physical layer states of the terminal cards are the same or not, if the current physical layer states of the terminal cards are the same, determining that the current physical layer state of each terminal card belongs to a fourth combination state, if the current physical layer state of each terminal card is not the same, determining whether the current physical layer state of each terminal card has only one physical layer state of the fourth priority, if the current physical layer state of each terminal card has only one physical layer state of the fourth priority, determining that the physical layer state of each current terminal card belongs to a fifth combination state, and if the physical layer state of each current terminal card has at least two physical layer states with the fourth priority, determining that the physical layer state of each current terminal card belongs to a sixth combination state; wherein the first condition of the current physical layer state comprises the second combined state or the fifth combined state, and the second condition of the current physical layer state comprises the first combined state, a third combined state, a fourth combined state or a sixth combined state.
Further, if the current physical layer state is the first state, acquiring the VCO control right by a target terminal card includes: if the first condition of the current physical layer state comprises the second combination state, acquiring a VCO control right by a terminal card corresponding to a unique high-priority physical layer state in all terminal cards; or if the first condition of the current physical layer state includes the fifth combination state, the terminal card corresponding to the unique fourth priority physical layer state in all the terminal cards acquires the VCO control right.
Further, if the current physical layer status is the second status, the alternately acquiring the VCO control right by the multiple target terminal cards includes: if the second condition of the current physical layer state comprises the first combination state, each terminal card alternately acquires the VCO control right; if the second condition of the current physical layer state comprises the third combination state, the terminal card corresponding to each high-priority physical layer state in all the terminal cards alternately acquires the VCO control right; if the second condition of the current physical layer state comprises the fourth combination state, each terminal card alternately acquires the VCO control right; or if the second condition of the current physical layer state includes the sixth combination state, the terminal card corresponding to the physical layer state of the fourth priority in all the terminal cards alternately acquires the VCO control right.
Further, after the multiple target terminal cards alternately acquire the VCO control right if the current physical layer state is the second state, the method further includes: if the task execution mode among the terminal cards which alternately acquire the VCO control right is determined to be a serial time division mode, acquiring the VCO control right by the terminal card which is currently executing the task; or if the task execution mode among the terminal cards which alternately acquire the VCO control right is determined to be a parallel simultaneous mode, determining the terminal card which currently acquires the VCO control right according to the network mode of each terminal card which alternately acquires the VCO control right.
Further, if it is determined that the task execution mode between the terminal cards that alternately acquire the VCO control right is the parallel simultaneous mode, determining the terminal card that currently acquires the VCO control right according to the network mode of each terminal card that alternately acquires the VCO control right includes: determining whether the priority of the network mode of only one terminal card among the terminal cards alternately acquiring the VCO control right is the highest, if so, acquiring the VCO control right by the terminal card with the highest priority of the network mode, and if so, acquiring the VCO control right by the terminal card corresponding to the terminal card with the highest priority of the physical layer state among the at least two terminal cards with the highest priority of the network mode.
In a second aspect, an embodiment of the present application further provides a frequency offset control apparatus, where the apparatus includes: a processor and a memory, the memory being configured to store at least one instruction which, when loaded and executed by the processor, is configured to implement the frequency offset control method provided by the first aspect. In one embodiment, the frequency offset control apparatus provided in the second aspect may be a chip or a chip module.
In a third aspect, a further embodiment of the present application further provides a chip, where the chip is connected to a memory, or the chip is integrated with a memory (for example, the frequency offset control apparatus provided in the second aspect), and when a program or an instruction stored in the memory is executed, the frequency offset control method provided in the first aspect is implemented.
Fourth aspect an embodiment of the present application provides a terminal, where the terminal includes a terminal body and the frequency offset control apparatus provided in the second aspect.
In a fifth aspect, another embodiment of the present application further provides a terminal, which includes a terminal body and the chip provided in the third aspect.
In a sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the frequency offset control method provided in the first aspect.
Through the technical scheme, after the current physical layer states of all the terminal cards are determined, if the current physical layer states are the first conditions, one target terminal card acquires the VCO control right, and if the current physical layer states are the second conditions, a plurality of target terminal cards alternately acquire the VCO control right and carry out frequency offset adjustment according to the VCO control right acquisition results. On the premise of ensuring the frequency offset tracking performance of the card where NR is located and not punching GAP, the influence on the transceiving performance of each mode of each card is reduced to the maximum extent by the selection of the VCO adjustment control power of the multimode multi-card and the combined frequency offset adjustment of the VCO and the NCO, no matter whether the modes of each card are synchronous or not.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a plurality of 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 according to another embodiment of the present application;
fig. 3 is a flow chart of determining VCO control according to yet another embodiment of the present application;
fig. 4 is a schematic structural diagram of a frequency offset control apparatus according to yet another embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the conventional processing operation, when a terminal (e.g., an NR terminal) performs Frequency offset control in a stand-alone operation mode (SA) or a Non-stand-alone operation mode (NSA), the terminal may adjust a Frequency offset by adjusting a voltage of a crystal oscillator or a phase-locked loop (PLL), and before the Frequency offset adjustment is configured to be effective, there is a time period during which the Frequency offset is unstable, and the transmission and reception of the NR terminal are affected during the time period. Because the network mode, the time offset and the frequency offset of the multi-mode multi-card are not necessarily the same among the cards, independent frequency offset tracking and control are required to be performed respectively, but the CP range of the card where the NR is located may Overlap with the transceiving time of other cards (overlay), and at this time, when the frequency offset is adjusted within the CP range of the NR, the unstable time of the generated frequency offset may affect the transceiving performance of other cards. For this reason, the conventional treatments are: when frequency offset control is carried out under a multimode multi-card, one method is to directly adopt a plurality of crystal oscillators or a plurality of PLL, so that the frequency offset control of each card is not mutually restricted, but the defect is that the cost is higher; the other card only adopts a crystal oscillator or PLL, and the card where NR is positioned adjusts VCO, and the other cards adjust NCO, but the defect is that the influence on the transceiving performance of the other cards is large; the other is that all cards only adjust NCO, but the defect is that residual frequency offset on crystal oscillator or PLL can cause the scheduling granularity Slot of NR, the transmission time interval TTI of LTE or the frame length of the mode of other cards to be inaccurate, thereby introducing time offset; still another is to stagger the time for receiving and transmitting the service of each card, and maintain the frequency offset control word separately, but the disadvantage is that punching is needed between each card, which has a large influence on the receiving and transmitting of the punched card, and further affects the user experience.
According to the 3GPP protocol 38.101-1, section 6.4.1, the frequency offset between the UE carrier frequency of NR and the base station carrier frequency needs to satisfy the protocol requirements, that is: can not exceed +/-0.1PPM, so NR needs to be adjusted as soon as possible when estimating the frequency offset, and in order to avoid the influence of the section of unstable frequency offset when adjusting the VCO, the adjustment of the VCO by NR is carried out within the CP range of the OFDM Symbol. However, in a multi-mode multi-card scenario, the time between cards is not necessarily synchronized, and the adjustment of the VCO by any one card may affect the ongoing transmission and reception on another card.
In order to overcome the above technical problems, embodiments of the present application provide a frequency offset control method, by which, on the premise that only one crystal oscillator or PLL is used to ensure the frequency offset tracking performance of the card where NR is located and no GAP is imposed, no matter whether the modes of the cards are synchronous or not, the influence on the transceiving performance of each mode of each card is reduced to the greatest extent by the selection of the VCO adjustment control right of the multimode multi-card and the joint frequency offset adjustment of the VCO and the NCO.
The frequency offset control method provided by the embodiment of the application can be suitable for a multi-mode and multi-card terminal, wherein on the premise that the multi-mode and multi-card terminal is represented, each card can be in a multi-mode scene. Fig. 1 is a schematic diagram of a plurality of cards in a multi-card multi-mode terminal according to an embodiment of the present application, and as shown in fig. 1, the multi-card indicates that a plurality of multi-mode terminal cards (SIM cards, Subscriber Identity modules or USIM cards, Universal Subscriber Identity modules) can be mounted on one carrier. The terminal of the multimode multi-card can be provided with a card 1, a card 2 and a card …, wherein the card n is a positive integer greater than or equal to 2. That is, at least 2 terminal cards can be installed in the multimode multi-card terminal. Multimode means a scenario that each terminal card of a plurality of terminal cards installed in the terminal can be multimode, for example, card 1, card 2, …, and any terminal card of card n can reside in a 5G network, a 4G network, a 3G network, or a 2G network.
Taking a dual-card multimode handset as an example, as shown in table one, the terminal may install card 1 and card 2, and card 1 currently resides in a 5G network and card 2 currently resides in a 4G network.
Watch 1
In one embodiment, in the using process of the terminal, due to the fact that confidence degrees of frequency offset estimation values tracked and maintained by the terminal are different under different physical layer states, only the card with high confidence degree of the frequency offset estimation value can adjust the VCO in a high priority mode. Such as: one card is in IDLE DRX physical layer state listening to Paging, while the other card is in Sync network searching physical layer state. Because the frequency offset estimation value of the Sync network searching is not higher than the frequency offset estimation value confidence of the IDLE DRX, if the VCO is controlled to adjust by adopting the Sync network searching card, the frequency offset between the UE and the base station side is larger, so that the time offset is introduced, and the receiving performance of the card listening to Paging by the IDLE DRX is influenced. Therefore, it is necessary to subdivide the physical layer state of each card, and according to the confidence of the frequency offset estimation value and the magnitude of the influence on the frequency offset control, the physical layer state may be subdivided into five physical layer states, where the names and definitions of the five physical layer states are shown in table two:
watch two
Further, according to the accuracy of the frequency offset estimation value, the priority order of the five physical layer states shown in table two may be set, and the first priority to the fifth priority in the priority order are ordered as follows:
Non-DRX Connect > C-DRX > RA >I-DRX > Sync
and the C-DRX is the Connect DRX described in the table II, and the I-DRX is the IDLE DRX described in the table II. Further, of the first to fifth priorities, the first priority Non-DRX Connect, the second priority C-DRX, and the third priority RA are high priorities, and the fourth priority I-DRX and the fifth priority Sync are low priorities.
It should be noted that the division of the physical layer state in the present application is not limited to the five states shown in fig. 2, and may be further subdivided according to the needs.
Fig. 2 is a flowchart of a frequency offset control method according to another embodiment of the present application, as shown in fig. 2, the frequency offset control method includes the following steps:
step 201: and acquiring the current physical layer state of each terminal card.
Step 202: and determining the current physical layer states of all the terminal cards, and executing the step 203 if the current physical layer states are the first states, and executing the step 204 if the current physical layer states are the second states.
Step 203: a target terminal card obtains VCO control.
Step 204: and a plurality of target terminal cards alternately acquire the control right of the VCO.
Step 205: in the stage that a plurality of target terminal cards alternately acquire the VCO control right to adjust the VCO, the task execution mode between the target terminal cards may be determined, if the task execution mode between the cards is a serial time division mode, step 206 is executed, and if the task execution mode between the cards is a parallel simultaneous mode, step 207 is executed.
Step 206: the terminal card which is executing the task in all the terminal cards acquires the control right of the VCO.
Step 207: and determining whether the network mode of only one terminal card currently has the highest priority among all the terminal cards needing to alternately acquire the VCO control right, if so, entering a step 208, and otherwise, entering a step 209.
Step 208: VCO control is obtained by the highest priority of the network mode.
Step 209: the VCO control is obtained by the highest priority in the combination result.
In the specific implementation of step 201, the physical layer status of each terminal card within the same time period may be obtained. For example, two terminal cards, namely card 1 and card 2, are installed in the terminal, and the current physical layer states of the card 1 and the card 2 are respectively obtained, it is known from the obtained result that the current physical layer state of the card 1 is Sync, the priority corresponding to the current physical layer state of the card 1 is the fifth priority, the current physical layer state of the card 2 is C-drx (connect drx), and the priority corresponding to the current physical layer state of the card 2 is the second priority.
In the specific implementation of step 202 to step 204, the physical layer states of all the terminal cards may be combined, and the combined situation of the physical layer states may be determined, where the combined situation of the physical layer states of all the terminal cards installed in the terminal may include the first situation and the second situation. Determining whether the current situation is a first situation or a second situation after the physical layer states of all terminal cards installed in the terminal are combined, and determining a target terminal card and acquiring the VCO control right by the target terminal card when the current situation is the first situation; and when the current situation is the second situation, determining a plurality of target terminal cards, and alternately acquiring the VCO control right by the plurality of target terminal cards.
The steps 202 to 204 are specifically a process for determining the VCO control right. Fig. 3 is a schematic diagram of determining a VCO control right according to another embodiment of the present application, and as shown in fig. 3, the step of determining the VCO control right includes the following steps:
step 301: and determining whether the physical layer state of each terminal card has a low-priority physical layer state, and according to the determination result, executing the step 302 if the low-priority physical layer state does not exist, and executing the step 303 if the low-priority physical layer state exists.
Step 302: the terminal cards alternately acquire VCO control.
Step 303: and determining whether the physical layer state of each terminal card has a high-priority physical layer state, and according to the determination result, executing the step 304 if the high-priority physical layer state exists, and executing the step 307 if the high-priority physical layer state does not exist.
Step 304: and determining whether the physical layer state of each terminal card has only one high priority, and according to the determination result, executing the step 305 if the physical layer state has only one high priority, and executing the step 306 if the physical layer state does not have only one high priority.
Step 305: the terminal card of the high priority physical layer state obtains the VCO control right.
Step 306: the VCO control is alternately acquired by a plurality of terminal cards which are currently in a high-priority physical layer state.
Step 307: and determining whether the physical layer states of the terminal cards are the same, and according to the determination result, executing step 302 if the physical layer states of the terminal cards are the same, and executing step 308 if the physical layer states of the terminal cards are not the same.
Step 308: and determining whether the physical layer state of each terminal card has only one fourth priority, and according to the determination result, if the physical layer state of each terminal card has only one fourth priority, executing step 309, and if the physical layer state of each terminal card does not have only one fourth priority, executing step 310.
Step 309: the VCO control is obtained by a terminal card that is currently in a fourth priority physical layer state.
Step 310: the VCO control is acquired by a plurality of terminal cards currently in a fourth priority physical layer state.
Since the priority of the physical layer states is applicable to 2G/3G/4G/5G, etc., when multiple modules are used for multiple cards, the VCO control right may be allocated according to the physical layer state of each card in the same time period, and the process of determining the VCO control right is described by taking two terminal cards installed in a terminal as an example, as shown in table three:
watch III
In the specific implementation of steps 205 to 209, after determining the VCO control right in the above manner, and in the case of determining that the VCO control right is obtained by "alternately obtaining the VCO control right" (i.e., alternately controlling), in a combination of physical layer states of a multi-mode multi-card, it may be further determined how to obtain the VCO control right alternately according to the execution of each task of the terminal card. The above-mentioned "alternate control" can be divided into the following two cases:
1. the terminal card task execution mode is an alternate control mode in a serial time division mode;
2. the terminal card task execution mode is an alternate control mode in a parallel simultaneous mode.
The serial time division mode is that tasks between the cards are executed in serial time division, and then under the serial time division mode, the current task of which card is executed obtains the VCO control right by the card executing the task, so that the VCO control right is obtained alternately. For the physical layer state with uplink transmission, the selection of the VCO control right is set as the alternate control, so as to reduce the complexity of implementation, because the residual frequency offset is not large at this time, and the performance is less affected. And for the scene that all cards are in Sync, the Sync network searching of all cards can only adjust NCO.
The tasks between the cards are executed simultaneously in parallel in the parallel simultaneous mode, and then in the parallel simultaneous mode, the network mode and the physical layer state of the cards with concurrent situations need to be considered, the network mode is considered preferentially, and the physical layer state is considered secondarily, so that GAP (GAP) is not needed, and the influence on the transceiving performance and the service is reduced. The physical layer state priority is given above, and the mode priority is: 5G > 4G > 3G > 2G.
For example, the terminal is equipped with two terminal cards, card 1 and card 2, and the card 1 and card 2 are determined to perform the alternate control operation in the parallel simultaneous mode by the determination of the VCO control right. Further, it may be determined whether the priority of the network mode of only one terminal card currently among all the terminal cards that need to alternately acquire the VCO control right is the highest according to the network mode in which the card 1 and the card 2 are currently located, specifically, it is currently determined that the card 1 resides in the 5G network and the card 2 currently resides in the 4G network, at this time, the card 1 acquires the VCO control right, and in a stage in which the card 1 and the card 2 alternately acquire the VCO control right, if the priority of the network mode of the card 2 is higher than the priority of the network mode of the card 1, the card 2 alternately acquires the VCO control right. In the alternate control phase of the parallel simultaneous mode of the card 1 and the card 2, if the network mode of the card 1 and/or the card 2 is changed, it can be determined which card acquires the VCO control right according to the changed network mode. For example, after a network mode change, card 1 resides in a 4G network and card 2 resides in a 5G network, and VCO control is acquired by card 2. And further, the terminal card can be alternately controlled in a parallel simultaneous mode.
When it is determined that the network modes of the cards 1 and 2 are the same according to the network mode currently in which the cards 1 and 2 are currently located, for example, the card 1 currently resides in a 5G network, and the card 2 currently also resides in the 5G network, in this case, it may be further determined that the priority of the current physical layer states of the cards 1 and 2 is higher, and the VCO control right is obtained by the highest priority, for example, if the cards 1 and 2 currently both reside in the 5G network, and the physical layer state of the card 1 is Connect DRX (second priority) and the physical layer state of the card 2 is Sync (fifth priority), it may be determined that the card 1 obtains the VCO control right. In the alternate control phase of the cards 1 and 2 in the parallel simultaneous mode, and when the network mode of the cards 1 and 2 is the same, if the physical layer state of the card 1 and/or the card 2 changes, it can be determined which card acquires the VCO control right according to the changed physical layer state.
After determining the VCO control right selection result in the above manner, the frequency offset adjustment may be performed according to the VCO control right selection result. Specifically, the frequency offset estimation value may be directly adjusted to the VCO, and 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 adopt the following formula:
the actual adjustment value of the uplink/downlink NCO of the card for acquiring the VCO control right = the estimated value of the cumulative frequency offset of the card for acquiring the VCO control right — the adjustment value of the cumulative VCO
Wherein, the card accumulates the estimated value of the frequency deviation, including the sum of the VCO of the card and the accumulated adjustment quantity of the NCO; and the accumulated VCO adjustment value is the sum of all the cards to the VCO adjustment. Thus, by compensating the VCO adjustment amount to the NCO adjustment amount of each card, the influence of the VCO adjustment on other cards can be reduced to the maximum extent, and the independence of frequency offset tracking of each card can be ensured.
By the frequency offset control method provided by the embodiment of the application, on the premise of ensuring the frequency offset tracking performance of the card where NR is located and not punching GAP, the influence on the transceiving performance of each mode of each card is reduced to the maximum extent by the selection of the VCO adjustment control right of the multimode multi-card and the joint frequency offset adjustment of the VCO and the NCO no matter whether each mode of each card is synchronous or not.
Fig. 4 is a schematic structural diagram of a frequency offset control apparatus according to still another embodiment of the present application, as shown in fig. 4, the apparatus may include a processor 401 and a memory 402, where the memory 402 is configured to store at least one instruction, and the instruction is loaded and executed by the processor 401 to implement the frequency offset control method according to the embodiment shown in fig. 2 or the VCO control right determination method according to the embodiment shown in fig. 3. In one implementation, the frequency offset control apparatus provided in the embodiment shown in fig. 4 may be a chip.
Another embodiment of the present application further provides a chip, where the chip is connected to a memory, or the chip is integrated with a memory, and when a program or an instruction stored in the memory is executed, the frequency offset control method provided in the embodiment shown in fig. 2 or the VCO control right determination method provided in the embodiment shown in fig. 3 is implemented.
Still another embodiment of the present application further provides a terminal, where the terminal includes a terminal body and the frequency offset control apparatus provided in the embodiment shown in fig. 4.
Still another embodiment of the present application provides a terminal, which includes a terminal body and the above chip connected to a memory.
Yet another embodiment of the present application further provides a computer storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the frequency offset control method provided in the embodiment shown in fig. 2 or the VCO control right determination method provided in the embodiment shown in fig. 3.
It should be understood that the application may be an application program (native app) 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 invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a Processor (Processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of frequency offset control, the method comprising:
acquiring the current physical layer state of each terminal card;
determining the current physical layer state conditions of all terminal cards, wherein the current physical layer state conditions of all terminal cards comprise a first condition and a second condition, if the current physical layer state conditions are the first condition, a target terminal card acquires VCO control right, and if the current physical layer state conditions are the second condition, a plurality of target terminal cards alternately acquire VCO control right; and
and adjusting the frequency offset according to the VCO control right acquisition result.
2. The method of claim 1, wherein obtaining the current physical layer state of each terminal card comprises:
acquiring the current physical layer state of each terminal card as a network searching state, a paging receiving state, a random access state, a connection state DRX or a non-connection state;
the network searching state, the paging receiving state, the random access state, the connection state DRX and the priority of the non-connection state are sequentially a fifth priority, a fourth priority, a third priority, a second priority and a first priority, a physical layer state corresponding to the fifth priority and the fourth priority is a low-priority physical layer state, and a physical layer state corresponding to the third priority, the second priority and the first priority is a high-priority physical layer state.
3. The method of claim 2, wherein determining the current physical layer status of all terminal cards, the current physical layer status of all terminal cards comprising a first case and a second case comprises:
determining whether the low-priority physical layer state exists in the current physical layer state of each terminal card, and if the low-priority physical layer state does not exist in the physical layer state of each terminal card, determining that the current physical layer state of each terminal card belongs to a first combination state;
if the low-priority physical layer state exists in the current physical layer states of the terminal cards, determining whether the high-priority physical layer state exists in the current physical layer states of the terminal cards, if the high-priority physical layer state exists in the physical layer states of the terminal cards and only one high-priority physical layer state exists, determining that the current physical layer state of the terminal cards belongs to a second combination state, and if the high-priority physical layer state exists in the physical layer states of the terminal cards and at least two high-priority physical layer states exist, determining that the current physical layer state of the terminal cards belongs to a third combination state;
if the low-priority physical layer state does not exist in the current physical layer states of the terminal cards, determining whether the current physical layer states of the terminal cards are the same or not, if the current physical layer states of the terminal cards are the same, determining that the current physical layer state of each terminal card belongs to a fourth combination state, if the current physical layer state of each terminal card is not the same, determining whether the current physical layer state of each terminal card has only one physical layer state of the fourth priority, if the current physical layer state of each terminal card has only one physical layer state of the fourth priority, determining that the physical layer state of each current terminal card belongs to a fifth combination state, and if the physical layer state of each current terminal card has at least two physical layer states with the fourth priority, determining that the physical layer state of each current terminal card belongs to a sixth combination state;
wherein the first condition of the current physical layer state comprises the second combined state or the fifth combined state, and the second condition of the current physical layer state comprises the first combined state, a third combined state, a fourth combined state or a sixth combined state.
4. The method of claim 3, wherein obtaining VCO control by a target terminal card if the current physical layer state condition is the first condition comprises:
if the first condition of the current physical layer state comprises the second combination state, acquiring a VCO control right by a terminal card corresponding to a unique high-priority physical layer state in all terminal cards; or
And if the first condition of the current physical layer state comprises the fifth combination state, the terminal card corresponding to the unique fourth priority physical layer state in all the terminal cards acquires the VCO control right.
5. The method of claim 3, wherein alternately acquiring VCO control by a plurality of target terminal cards if the condition of the current physical layer state is the second condition comprises:
if the second condition of the current physical layer state comprises the first combination state, each terminal card alternately acquires the VCO control right;
if the second condition of the current physical layer state comprises the third combination state, the terminal card corresponding to each high-priority physical layer state in all the terminal cards alternately acquires the VCO control right;
if the second condition of the current physical layer state comprises the fourth combination state, each terminal card alternately acquires the VCO control right; or
And if the second condition of the current physical layer state includes the sixth combination state, the terminal card corresponding to the physical layer state of the fourth priority in all the terminal cards alternately acquires the VCO control right.
6. The method according to any of claims 1-5, further comprising, after alternately acquiring the VCO control right by a plurality of target terminal cards if the condition of the current physical layer status is the second condition:
if the task execution mode among the terminal cards which alternately acquire the VCO control right is determined to be a serial time division mode, acquiring the VCO control right by the terminal card which is currently executing the task; or
And if the task execution mode among the terminal cards which alternately acquire the VCO control right is determined to be a parallel simultaneous mode, determining the terminal card which currently acquires the VCO control right according to the network mode of each terminal card which alternately acquires the VCO control right.
7. The method of claim 6, wherein if it is determined that the task execution mode between the terminal cards that alternately acquire the VCO control right is the parallel simultaneous mode, determining the terminal card that currently acquires the VCO control right according to the network mode of the terminal cards that alternately acquire the VCO control right comprises:
determining whether the priority of the network mode of only one terminal card among the terminal cards alternately acquiring the VCO control right is the highest, if so, acquiring the VCO control right by the terminal card with the highest priority of the network mode, and if so, acquiring the VCO control right by the terminal card corresponding to the terminal card with the highest priority of the physical layer state among the at least two terminal cards with the highest priority of the network mode.
8. An apparatus for frequency offset control, the apparatus comprising:
a processor and a memory for storing at least one instruction which when loaded and executed by the processor is to carry out a method of frequency offset control according to any of claims 1 to 7.
9. A terminal, characterized in that the terminal comprises the frequency offset control apparatus of claim 8.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method of frequency offset control according to any one of claims 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110668881.4A CN113132288B (en) | 2021-06-17 | 2021-06-17 | Frequency offset control method and device, terminal and storage medium |
| PCT/CN2021/141458 WO2022262248A1 (en) | 2021-06-17 | 2021-12-27 | Frequency offset control method and apparatus, terminal, and storage medium |
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| CN202110668881.4A CN113132288B (en) | 2021-06-17 | 2021-06-17 | Frequency offset control method and device, terminal and storage medium |
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| WO2022262248A1 (en) * | 2021-06-17 | 2022-12-22 | 展讯通信（上海）有限公司 | Frequency offset control method and apparatus, terminal, and storage medium |
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| WO2022262248A1 (en) | 2022-12-22 |
| CN113132288B (en) | 2021-12-03 |
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