CN113691481A - Method, device, base station and storage medium for frame synchronization in new air interface system - Google Patents
Method, device, base station and storage medium for frame synchronization in new air interface system Download PDFInfo
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- CN113691481A CN113691481A CN202110993875.6A CN202110993875A CN113691481A CN 113691481 A CN113691481 A CN 113691481A CN 202110993875 A CN202110993875 A CN 202110993875A CN 113691481 A CN113691481 A CN 113691481A
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- 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
- H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
Abstract
The application relates to a method, a device, a base station and a storage medium for frame synchronization in a new air interface system, wherein frame header information in a data packet is acquired by acquiring subcarrier interval information in the data packet; and then timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information, adjusting the initial position of the frame structure as the time position of the frame structure by using the frame header information, and finally completing frame synchronization by using the time positions of the frame structure and the frame structure. By adopting the method, the efficiency of frame synchronization under different use conditions can be improved.
Description
Technical Field
The present application relates to the field of signal synchronization technologies, and in particular, to a method, an apparatus, a base station, and a storage medium for frame synchronization in a new air interface system.
Background
With the development of mobile communication technology, synchronization technology becomes more and more important, because the synchronization technology determines the synchronous communication interconnection of the transmitting and receiving parties in different domains, and realizes consistent information data exchange. Whether the communication system can completely realize synchronous exchange of data is an index for measuring communication quality, and if the communication system does not realize synchronization, the communication system is disturbed or even paralyzed. Frame synchronization, which is one of the most basic techniques, is the important method for distinguishing data streams.
In a new air interface system, in order to effectively utilize the limited bandwidth allocated to an operator, time division multiplexing is often used as a duplex mode in the data transmission process. The time division multiplexing refers to the simultaneous transmission of uplink and downlink signals in the same frequency band, and the uplink and downlink signals are divided by time. By means of time division multiplexing, the length of time can be distributed, and the problem of bandwidth resource waste caused by asymmetric transmission rate of uplink and downlink services is solved.
In the new air interface system, a time division multiplexing mode is adopted, and the real-time ratio of the uplink and the downlink can be modified to adapt to the requirements of the transmission rate of the uplink and the downlink services in different time periods. However, for a device, inputs and outputs of the same frequency, once turned on simultaneously, run the risk of self-excitation. Therefore, frame synchronization needs to be acquired in the equipment to control switches corresponding to the uplink and the downlink, so that the equipment cannot cut off effective uplink and downlink signals and cannot cause the equipment to generate self excitation.
In the conventional technology, correlation detection is performed on a primary synchronization signal and a secondary synchronization signal which periodically appear in a new air interface signal, then a sequence number in the currently detected synchronization signal is judged, a frame header signal position is obtained, and uplink and downlink division is performed through a preset frame structure. In the synchronization mode, when the base stations have different uplink and downlink ratios, equipment configuration needs to be manually carried out; in the operation process, when the uplink and downlink ratio changes due to the change of the service pressure, logic switching needs to be additionally performed.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a method, an apparatus, a base station and a storage medium for frame synchronization in a new air interface system, so as to improve efficiency of frame synchronization under different usage conditions.
A method for frame synchronization in a new air interface system, the method comprising:
and acquiring subcarrier interval information in the data packet.
And acquiring frame header information in the data packet.
And timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information.
And adjusting the starting position of the frame structure as the time position of the frame structure through the frame header information.
And completing frame synchronization by using the frame structure and the time position of the frame structure.
In one embodiment, the obtaining of the subcarrier spacing information in the data packet includes:
and acquiring information in the data packet.
When the information in the data packet contains the MAC address information consistent with the local device and the information types are consistent, the data packet containing the subcarrier interval information is received.
In one embodiment, after the obtaining of the frame header information in the data packet, the method includes:
and acquiring the pulse-per-second signal by analyzing the timestamp information in the data packet.
And synchronizing the frame header information and the pulse per second information according to a first preset time period.
In one embodiment, the obtaining the frame structure corresponding to the subcarrier spacing information by timing the subcarrier spacing information with different parameters includes:
and storing at least two groups of parameters under different clocks and different subcarrier interval information, wherein each group of parameters supports the generation of a frame structure corresponding to the fine adjustment of the length of the preset time period.
And when the timing parameters are consistent with the stored clock parameters, outputting the corresponding frame structure.
In one embodiment, the adjusting, by the frame header information, a start position of the frame structure as a time position of the frame structure includes:
and generating reference preset time for frame synchronization, and adjusting the starting position of the frame header in the reference preset time to obtain the distribution position of the preset time occupied by the frame structure in time, wherein the distribution position is the time position.
In one embodiment, the performing frame synchronization using the frame structure and the time position of the frame structure includes:
and timing from the starting position of the frame head, wherein the frame structure and the frame structure time position jointly determine the unique frame number.
And determining the synchronous frame number according to the corresponding relation among the frame number configuration period, the time and the frame number.
And the synchronous frame number is a frame number corresponding to the arrival of the next frame configuration.
In one embodiment, before completing frame synchronization by using the frame structure format and the frame structure time position, the method further includes:
acquiring and storing each symbol information in a frame structure, reading and outputting the uplink and downlink state at the moment;
configuring symbol information to obtain time slots with different formats;
and configuring the time slots with different formats to obtain different frame numbers.
A frame synchronization device in a new air interface system comprises,
a first obtaining module, configured to obtain subcarrier spacing information;
the second acquisition module is used for acquiring frame header information;
the timing module is used for timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information;
the adjusting module is used for adjusting the starting position of the frame structure as the time position of the frame structure through the frame header information;
and the synchronization module is used for completing frame synchronization by utilizing the frame header information and the time position of the frame structure.
A base station comprising a processor and communication circuitry, the processor coupled to the communication circuitry, the processor configured to perform communications to implement the steps of:
subcarrier spacing information is obtained.
And acquiring frame header information.
And timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information.
And adjusting the starting position of the frame structure as the time position of the frame structure through the frame header information.
And completing frame synchronization by using the frame structure and the time position of the frame structure.
A non-transitory computer readable storage medium storing computer instructions that when executed perform the steps of:
subcarrier spacing information is obtained.
And acquiring frame header information.
And timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information.
And adjusting the starting position of the frame structure as the time position of the frame structure through the frame header information.
And completing frame synchronization by using the frame structure and the time position of the frame structure.
According to the method, the device, the base station and the storage medium for frame synchronization in the new air interface system, frame header information is acquired by acquiring subcarrier interval information; and then timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information, adjusting the initial position of the frame structure as the time position of the frame structure by using the frame header information, and finally completing frame synchronization by using the time positions of the frame structure and the frame structure, so that the efficiency of frame synchronization under different use conditions can be improved.
Drawings
Fig. 1 is an application environment diagram of a method for frame synchronization in a new air interface system in an embodiment;
fig. 2 is a schematic flow chart of a method for frame synchronization in a new air interface system according to an embodiment;
FIG. 3 is a flowchart illustrating the step of obtaining subcarrier spacing information in a data packet according to an embodiment;
FIG. 4 is a flowchart illustrating steps further included after obtaining header information in a packet according to an embodiment;
fig. 5 is a schematic flow chart of a step of obtaining a frame structure corresponding to the subcarrier spacing information in an embodiment;
FIG. 6 is a flowchart illustrating a step of adjusting a starting position of a frame structure as a time position of the frame structure according to the header information in one embodiment;
FIG. 7 is a flow diagram that illustrates the steps of performing frame synchronization using a frame structure and a temporal position of the frame structure, in one embodiment;
FIG. 8 is a flowchart illustrating steps further included prior to performing frame synchronization using a frame structure format and a frame structure temporal location, in one embodiment;
fig. 9 is a block diagram of a frame synchronization apparatus in a new air interface system according to an embodiment;
fig. 10 is an internal structural diagram of a base station in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The method for frame synchronization in the new air interface system provided by the present application can be applied to the application environment shown in fig. 1. Wherein the terminal 102 communicates with the base station 104 through a network. Obtaining subcarrier interval information and frame header information; then timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information; adjusting the initial position of the frame structure as the time position of the frame structure through the frame header information; and finally, completing frame synchronization by utilizing the frame structure and the time position of the frame structure. The terminal 102 may be, but not limited to, a Radio Remote Unit (RRU) in the fifth generation communication technology, an AAU (Active Antenna Unit), or a combination of multiple or multiple units, which is not limited herein; the base station 104 may be a Baseband Unit, which may be a BBU (Building base band Unit), or may be a generic term of a CU (Centralized Unit) or a DU (Distributed Unit) in the fifth-generation communication technology, or may be a combination of multiple units or multiple units, which is not limited herein.
In an embodiment, as shown in fig. 2, a method for frame synchronization in a new air interface system is provided, which is described by taking the application of the method to the terminal in fig. 1 as an example, and includes the following steps:
step 202, obtaining subcarrier spacing information in the data packet.
Wherein the subcarrier spacing information includes subcarrier spacing classes. Typically, there are five different subcarrier spacings, where each subcarrier spacing corresponds to a parameter that characterizes frequency. Taking one of the subcarrier intervals as an example, the corresponding parameter of the subcarrier interval is 0, which represents 15 kHz.
Specifically, the terminal receives subcarrier spacing information in a data packet from the base station.
And step 204, acquiring frame header information in the data packet.
The frame header information includes a frame header start time and a start position.
Specifically, the terminal receives frame header information in a packet from the base station.
Step 206, timing the subcarrier spacing information by using different parameters, and obtaining a frame structure corresponding to the subcarrier spacing information.
Different types of subcarrier information correspond to different frame structures, and the frame structures are different formats, so that the corresponding frame structures can be found through the subcarrier information by utilizing the corresponding relation.
Specifically, the frequencies represented by different types of subcarrier information are different, so that the types of subcarrier spacing information can be determined by counting the subcarrier information with different parameters. The corresponding frame structure can be found from the determined subcarrier information type through the corresponding relation between the subcarrier information and the frame structure.
And 208, adjusting the starting position of the frame structure as the time position of the frame structure through the frame header information.
The time starting position of the frame structure is generated by the device alone, and the starting position of the frame structure needs to be adjusted in order to ensure that a plurality of devices can use the same frame structure. The most effective way to adjust the frame structure is to adjust the frame header, i.e. the time when each frame starts. The temporal position of the frame structure refers to a distribution position of a preset time occupied by the frame structure in time.
Specifically, the start time of the frame structure is adjusted by using the frame start time in the frame header information, and the frame start time in the frame header information is used as the start time of the frame structure. Meanwhile, since the time length of each frame is deterministic, the frame header start position refers to the time position of the start of the frame header, which is relative to the frame length. The temporal position of the frame structure can be uniquely determined by the temporal position of the frame header and the start time of the frame structure.
And step 210, completing frame synchronization by using the frame structure and the time position of the frame structure.
Because the frame structures have different formats, the time positions of the frame structures also have different differences, and different frame structure formats correspond to different frame structure time positions.
Specifically, the frame structure and the time position of the frame structure may determine the sequence number information of each constituent unit of the frame structure, so that the framing condition becomes unique, and the frame synchronization is completed by determining the synchronization frame number.
In the method for frame synchronization in a new air interface system, subcarrier interval information and frame header information are acquired; then timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information; adjusting the initial position of the frame structure as the time position of the frame structure through the frame header information; and finally, completing frame synchronization by utilizing the frame structure and the time position of the frame structure, so that the efficiency of frame synchronization under different use conditions can be improved.
In one embodiment, as shown in fig. 3, the obtaining of the subcarrier spacing information in the data packet includes:
step 302, information in the data packet is obtained.
Specifically, the terminal receives information in a data packet from the base station.
Step 304, when the initial packet contains MAC address information consistent with the local device and the information type is consistent, receiving the data packet containing the subcarrier interval information.
The local device is a receiving device, and may be located on a base station or a terminal.
Specifically, when the initial packet contains the mac address information corresponding to the receiving device and the information type is identical, the data packet containing the subcarrier spacing information is received. This is a sequential relationship, and similarly, there is a relationship of transmitting and receiving information. For example: when the remote radio unit does not send data through the optical port, the baseband unit only sends an initial packet to the remote radio unit, when the remote radio unit confirms that the MAC address information in the initial packet is consistent with the local device and the information types are consistent, the remote radio unit sends a time packet data packet to the baseband unit, and after confirming that the data in the time packet are consistent with the format, the baseband unit continuously sends a slot format packet containing subcarrier information.
In this embodiment, when the information received through the optical port does not include data, the optical port only receives the initial packet; when the initial packet contains the MAC address information consistent with the local machine and the information types are consistent, the optical port receives the data packet containing the subcarrier interval information, thereby achieving the purpose of accurately acquiring the subcarrier information.
In an embodiment, as shown in fig. 4, after obtaining the frame header information in the data packet, the method includes:
at step 402, a pulse per second signal is obtained by analyzing the timestamp information in the data packet.
Wherein the time stamp information includes time information and a pulse per second signal.
Specifically, by analyzing the time stamp information, the time information and the pulse per second signal therein are extracted. For example, the time information and the pulse per second signal can be analyzed through the 1588 module acquisition data packet. The data packet is acquired and analyzed by the 1588 module by an external GPS (Global Positioning System) module.
Alternatively, the pulse per second signal may be replaced by an internally generated one. Specifically, when the device confirms that the slave device connected to the same BBU only has itself, interference between base stations can be ignored, and timing of the device itself can be used instead, and the timing can also confirm and correct an error value with GPS information when a specific flag is acquired, so that the usage amount of logic resources is reduced on the premise of ensuring normal communication, and power consumption is reduced. The specific mark is calibrated by a controller or a chip with a control function, such as a singlechip. Usually, the frequency of use of the specific flag is of a very low level with respect to the main frequency of the program, and therefore the part of the logic is not active for most of the time, which can reduce power consumption.
And 404, synchronizing the frame header information and the pulse per second information according to a preset time period.
The period synchronization means that the frame header of each frame appears periodically because each frame has the same time, and when the period appears, the frame header start time and the pulse start time are synchronized.
Specifically, each frame signal has the same preset time, and the frame header start time is synchronized with the pulse per second start time, that is, the rising/falling edge of the frame header signal is aligned with the rising edge of the pulse per second signal and periodically aligned according to the preset time. Typically, the predetermined time is 10 milliseconds.
In an embodiment, as shown in fig. 5, the obtaining a frame structure corresponding to the subcarrier spacing information by timing the subcarrier spacing information with different parameters includes:
step 502, at least two groups of parameters under different clocks and different subcarrier interval information are calculated and stored, and each group of parameters supports the generation of a frame structure corresponding to the fine adjustment of the length of a preset time period.
When the frame structure types are limited, the frame structure can be accurately acquired by generating the frame structure of each type corresponding to the specific parameters. The calculation process includes taking into account different OFDM (Orthogonal Frequency Division Multiplexing) symbol time lengths at each subcarrier interval and cyclic prefix time lengths varying with symbol sequence numbers, multiplying the considered OFDM symbol time lengths by counts of unit time lengths at different clock frequencies to obtain parameters, and the parameters are used for timing and generating sequence numbers of frame structure units.
Specifically, at least two groups of parameters under different clocks and different subcarrier interval information are stored in a register, and then each group of parameters supports generation of a frame structure which can be adjusted back and forth in time distribution, wherein the adjustment range is the length of a preset time period. Typically, a total of 15 sets of parameters under 3 different clocks and 5 different subcarrier spacing information are stored in a register, and then each set of parameters generates a frame structure that can be adjusted back and forth by 500 microseconds.
Step 504, when the timing parameter is consistent with the stored clock parameter, outputting the corresponding frame structure.
Wherein, there is a corresponding relation between the counting parameter and the stored clock, and when the counting parameter is consistent with one of the stored clocks, the corresponding frame structure is found.
Specifically, by matching the timing parameters to the clock already stored in the random access memory, the frame structure corresponding to the clock is then output.
In an embodiment, as shown in fig. 6, the adjusting the start position of the frame structure by the frame header information as the time position of the frame structure includes:
step 602, generating a reference preset time for frame synchronization, and adjusting a starting position of the frame header within the reference preset time to obtain a distribution position of the preset time occupied by the frame structure in time, where the distribution position is a time position.
The reference preset time refers to a time length of each frame.
Specifically, the device generates a reference preset time for determining the length of each frame, which is required to correspond to each frame when synchronizing the frames. And adjusting the starting position of the frame header within the reference preset time to obtain the distribution position of the preset time occupied by the frame structure in time. Typically, the reference preset time is 10 milliseconds.
In one embodiment, as shown in fig. 7, the performing frame synchronization using the frame structure and the time position of the frame structure includes:
step 702, timing from the starting position of the frame header, wherein the frame structure and the frame structure time position jointly determine a unique frame number;
specifically, a timer times the starting position of the frame header, and a unique frame number is determined according to the frame structure and the time position of the frame structure.
Step 704, determining a synchronous frame number according to the frame number configuration period, the corresponding relation between the time and the frame number;
specifically, after the frame number is obtained, the period, time and frame number are configured according to the frame number configuration flow, and the synchronous frame number is determined through the corresponding relationship.
Specifically, the frame structure in the data packet is obtained earlier than the frame structure actually obtained by the pulse per second, so that each time the data packet is obtained as the next group of data packets, the synchronous frame number is the frame number corresponding to the arrival of the next frame configuration.
In one embodiment, as shown in fig. 8, before completing frame synchronization by using the frame structure format and the frame structure time position, the method further includes:
step 802, acquiring and storing each symbol information in a frame structure, reading and outputting the uplink and downlink state at the moment;
specifically, a frame is composed of slots, and a slot is composed of symbols. After the device acquires the frame structure, the minimum unit symbol information forming the frame is stored, and the uplink and downlink states of the frame can be confirmed according to the symbol information.
Step 804, configuring symbol information to obtain time slots with different formats;
specifically, after the symbol information is stored, the symbols in the symbol information are configured into time slots with different formats according to a time slot configuration mode;
Specifically, time slots with different formats are configured into frames of different types according to a frame configuration mode, and then the frames are coded and numbered to obtain different frame numbers.
It should be understood that although the various steps in the flow charts of fig. 2-8 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-8 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In an embodiment, as shown in fig. 9, there is provided a frame synchronization apparatus in a new air interface system, including: first acquisition module, second acquisition module, timing module, adjustment module and synchronization module, wherein:
the first acquisition module is used for acquiring subcarrier interval information in the data packet;
the second obtaining module is used for obtaining frame header information in the data packet;
the timing module is used for timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information;
the adjusting module is used for adjusting the starting position of the frame structure as the time position of the frame structure through the frame header information;
and the synchronization module completes frame synchronization by using the frame structure and the time position of the frame structure.
In an embodiment, as shown in fig. 9, there is provided a frame synchronization apparatus in a new air interface system, further including:
and the third acquisition module is used for acquiring the information in the data packet.
And the receiving module is used for receiving the data packet containing the subcarrier interval information after the initial packet contains the MAC address information consistent with the local device and the information types are consistent.
In an embodiment, as shown in fig. 9, there is provided a frame synchronization apparatus in a new air interface system, further including:
and the analysis module is used for acquiring the pulse per second signal by analyzing the timestamp information in the data packet.
And the period synchronization module is used for synchronizing the frame header information and the pulse per second information according to a first preset time period.
In an embodiment, as shown in fig. 9, there is provided a frame synchronization apparatus in a new air interface system, further including:
and the storage module is used for calculating and storing at least two groups of parameters under different clocks and different subcarrier interval information, and each group of parameters supports the generation of a frame structure corresponding to the fine adjustment of the length of the preset time period.
And the first output module is used for outputting a corresponding frame structure when the timing parameter is consistent with the stored clock parameter.
In an embodiment, as shown in fig. 9, there is provided a frame synchronization apparatus in a new air interface system, further including:
and the generating module is used for generating the reference preset time for frame synchronization, and adjusting the starting position of the frame header in the reference preset time to obtain the distribution position of the preset time occupied by the frame structure in time, wherein the distribution position is the time position.
In an embodiment, as shown in fig. 9, there is provided a frame synchronization apparatus in a new air interface system, further including:
and the first determining module is used for timing from the starting position of the frame header, and the frame structure time position jointly determine the unique frame number.
And the second determining module is used for determining a synchronous frame number according to the corresponding relation between the frame number configuration period, the time and the frame number, wherein the synchronous frame number is the corresponding frame number when the next frame configuration arrives.
In an embodiment, as shown in fig. 9, there is provided a frame synchronization apparatus in a new air interface system, further including:
and the second output module is used for acquiring and storing each symbol information in the frame structure, and reading and outputting the uplink and downlink states at the moment.
The first configuration module is used for configuring symbol information to obtain time slots with different formats;
and the second configuration module is used for configuring the time slots with different formats to obtain different frame numbers.
For a specific limitation of the frame synchronization apparatus in the new air interface system, refer to the above limitation on the frame synchronization method in the new air interface system, and no further description is given here. All or part of each module in the frame synchronization device in the new air interface system can be implemented by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the device, and can also be stored in a memory in the device in a software form, so that the processor can call and execute operations corresponding to the modules.
The present application also provides a base station, configured to execute the method for frame synchronization in the new air interface system. Referring to fig. 10, fig. 10 is a schematic structural diagram of a base station for implementing an adaptive physical resource adjustment method according to an embodiment of the present application. The base station 10 comprises a processor 1002 and a communication circuit 1004, the processor 1002 is connected to the communication circuit 1004, and the processor 1002 is configured to execute instructions to implement the above method for adaptively adjusting physical resources.
The processor 1002 may also be referred to as a CPU (Central Processing Unit). The processor 1002 may be an integrated circuit chip having signal processing capabilities. The processor 1002 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor 1002 may be any conventional processor or the like.
Those skilled in the art will appreciate that the configuration shown in fig. 10 is a block diagram of only a portion of the configuration relevant to the present teachings and does not constitute a limitation on the devices to which the present teachings may be applied, and that a particular device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, there is provided a base station comprising a processor and a communication circuit, the processor being connected to the communication circuit, the processor being configured to implement the following steps when executing instructions:
and acquiring subcarrier interval information in the data packet.
And acquiring frame header information in the data packet.
And timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information.
And adjusting the starting position of the frame structure as the time position of the frame structure through the frame header information.
And completing frame synchronization by using the frame structure and the time position of the frame structure.
In one embodiment, a processor when executing instructions performs the steps of:
and acquiring information in the data packet.
When the information in the data packet contains the MAC address information consistent with the local device and the information types are consistent, the data packet containing the subcarrier interval information is received.
In one embodiment, a processor when executing instructions performs the steps of:
and acquiring the pulse-per-second signal by analyzing the timestamp information in the data packet.
And synchronizing the frame header information and the pulse per second information according to a first preset time period.
In one embodiment, a processor when executing instructions performs the steps of:
and calculating and storing at least two groups of parameters under different clocks and different subcarrier interval information, wherein each group of parameters supports the generation of a frame structure corresponding to the fine adjustment of the length of the preset time period.
And when the timing parameters are consistent with the stored clock parameters, outputting the corresponding frame structure.
In one embodiment, a processor when executing instructions performs the steps of:
and generating reference preset time for frame synchronization, and adjusting the starting position of the frame header in the reference preset time to obtain the distribution position of the preset time occupied by the frame structure in time, wherein the distribution position is the time position.
In one embodiment, a processor when executing instructions performs the steps of:
and timing from the starting position of the frame head, wherein the frame structure and the frame structure time position jointly determine the unique frame number.
And determining the synchronous frame number according to the corresponding relation among the frame number configuration period, the time and the frame number.
And the synchronous frame number is a frame number corresponding to the arrival of the next frame configuration.
In one embodiment, a processor when executing instructions performs the steps of:
and acquiring and storing each symbol information in the frame structure, and reading and outputting the uplink and downlink states at the moment.
And configuring symbol information to obtain time slots with different formats.
And configuring the time slots with different formats to obtain different frame numbers.
In one embodiment, a non-transitory computer readable storage medium is provided, storing computer instructions that when executed perform the steps of:
subcarrier spacing information is obtained.
And acquiring frame header information.
And timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information.
And adjusting the starting position of the frame structure as the time position of the frame structure through the frame header information.
And completing frame synchronization by using the frame structure and the time position of the frame structure.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and acquiring information in the data packet.
When the information in the data packet contains the MAC address information consistent with the local device and the information types are consistent, the data packet containing the subcarrier interval information is received.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and acquiring the pulse-per-second signal by analyzing the timestamp information in the data packet.
And synchronizing the frame header information and the pulse per second information according to a first preset time period.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and calculating and storing at least two groups of parameters under different clocks and different subcarrier interval information, wherein each group of parameters supports the generation of a frame structure corresponding to the fine adjustment of the length of the preset time period.
And when the timing parameters are consistent with the stored clock parameters, outputting the corresponding frame structure.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and generating reference preset time for frame synchronization, and adjusting the starting position of the frame header in the reference preset time to obtain the distribution position of the preset time occupied by the frame structure in time, wherein the distribution position is the time position.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and timing from the starting position of the frame head, wherein the frame structure and the frame structure time position jointly determine the unique frame number.
And determining the synchronous frame number according to the corresponding relation among the frame number configuration period, the time and the frame number.
And the synchronous frame number is a frame number corresponding to the arrival of the next frame configuration.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and acquiring and storing each symbol information in the frame structure, and reading and outputting the uplink and downlink states at the moment.
And configuring symbol information to obtain time slots with different formats.
And configuring the time slots with different formats to obtain different frame numbers.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for frame synchronization in a new air interface system is characterized in that the method comprises the following steps:
acquiring subcarrier interval information in a data packet;
acquiring frame header information in a data packet;
timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information;
adjusting the starting position of the frame structure as the time position of the frame structure through the frame header information;
and completing frame synchronization by using the frame structure and the time position of the frame structure.
2. The method of claim 1, wherein the obtaining subcarrier spacing information in the data packet comprises:
acquiring information in a data packet;
when the information in the data packet contains the MAC address information consistent with the local device and the information types are consistent, the data packet containing the subcarrier interval information is received.
3. The method of claim 1, wherein the obtaining frame header information in the packet comprises:
acquiring a pulse per second signal by analyzing timestamp information in the data packet;
and synchronizing the frame header information and the pulse per second information according to a first preset time period.
4. The method of claim 1, wherein the obtaining the frame structure corresponding to the subcarrier spacing information by timing the subcarrier spacing information with different parameters comprises:
calculating and storing at least two groups of parameters under different clocks and different subcarrier interval information, wherein each group of parameters supports generation of a frame structure corresponding to fine adjustment of the length of a preset time period;
and when the timing parameters are consistent with the stored clock parameters, outputting the corresponding frame structure.
5. The method according to claim 1, wherein said adjusting the start position of the frame structure as the time position of the frame structure by the frame header information comprises:
and generating reference preset time for frame synchronization, and adjusting the starting position of the frame header in the reference preset time to obtain the distribution position of the preset time occupied by the frame structure in time, wherein the distribution position is the time position.
6. The method of claim 1, wherein the using the frame structure and the time position of the frame structure to complete frame synchronization comprises:
timing from the starting position of the frame head, wherein the frame structure and the time position of the frame structure jointly determine a unique frame number;
determining a synchronous frame number according to the corresponding relation between the frame number configuration period, the time and the frame number;
and the synchronous frame number is a frame number corresponding to the arrival of the next frame configuration.
7. The method of claim 1, wherein prior to completing frame synchronization using the frame structure format and the frame structure time position, further comprising:
acquiring and storing each symbol information in a frame structure, reading and outputting the uplink and downlink state at the moment;
configuring symbol information to obtain time slots with different formats;
and configuring the time slots with different formats to obtain different frame numbers.
8. A frame synchronization device in a new air interface system is characterized in that,
the first acquisition module is used for acquiring subcarrier interval information in the data packet;
the second obtaining module is used for obtaining frame header information in the data packet;
the timing module is used for timing the subcarrier interval information by using different parameters to obtain a frame structure corresponding to the subcarrier interval information;
the adjusting module is used for adjusting the starting position of the frame structure as the time position of the frame structure through the frame header information;
and the synchronization module completes frame synchronization by using the frame structure and the time position of the frame structure.
9. A base station comprising a processor and communication circuitry, the processor coupled to the communication circuitry, the processor configured to execute instructions to implement the method of any of claims 1-7.
10. A non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 7.
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