CN114448587A - Method for moving LTE uplink antenna data by using EDMA in DSP - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0078—Timing of allocation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
- G06F13/28—Handling requests for interconnection or transfer for access to input/output bus using burst mode transfer, e.g. direct memory access DMA, cycle steal
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2209/00—Indexing scheme relating to G06F9/00
- G06F2209/50—Indexing scheme relating to G06F9/50
- G06F2209/5018—Thread allocation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2209/00—Indexing scheme relating to G06F9/00
- G06F2209/50—Indexing scheme relating to G06F9/50
- G06F2209/5021—Priority
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a method for moving LTE uplink antenna data by using EDMA in DSP, which comprises the following steps: step 1, when a system is started, a drive layer creates a background daemon thread; step 2, when the system normally runs, periodically waking up a daemon thread; step 3, reconfiguring EDMA parameters according to the new subframe proportioning scheme; the method has the following advantages: the method can solve the problem of moving a large amount of invalid data in the process of moving the LTE uplink antenna data by the EDMA, provides a dynamically configurable and more flexible uplink antenna data moving scheme, has great flexibility, and can complete the change of the LTE uplink antenna data moving scheme without restarting a system when the service changes the subframe ratio; the EDMA moving number scheme can be reconfigured according to the new subframe ratio issued by the service during the system operation period by only moving the data of one LTE subframe bearing the PRACH.
Description
Technical Field
The invention belongs to the technical field of computer software, and particularly relates to a method for moving LTE uplink antenna data by using EDMA in a DSP.
Background
At present, a DMA (Direct Memory Access) coprocessor is integrated in a DSP (Digital Signal Processing) used in the communication field, and the DMA has a background batch data transmission capability independent of a CPU, and can realize fast exchange of data, that is, fast transfer of data from one Memory area to another Memory area. In the TCI6630K2L chip of TI corporation, its integrated DMA is called EDMA (Enhanced Direct Memory Access) for performing fast exchange of data in the Memory.
A Physical Random Access Channel (PRACH) is a key channel for uplink synchronization between a terminal and a base station in a long term evolution planning (LTE) wireless communication system. The position relationship of the PRACH subframe in one frame (one frame includes 10 subframes) of the LTE system is determined by the subframe ratio of the system. The service layer of the base station needs a complete subframe data of the subframe where the PRACH is located to correctly analyze the information which is sent to the base station by the terminal through the PRACH channel.
In a TCI6630K2L chip of TI company, DSP stores uplink antenna data on an LL2 SRAM with smaller capacity and higher speed by taking symbols (a subframe comprises 14 symbols) as a unit, and then EDMA moves the symbols from the LL2 SRAM to a DDR with larger capacity and lower speed to form subframe data for a service layer.
Patent application publication No. CN88103505.X discloses a multi-frequency antenna for ultrashort wave measurement and control of measurement and control equipment of a unified system, which is used as a receiving and transmitting antenna for multifunctional, multi-point frequency and broadband measurement and control in radio engineering equipment, integrates separated multifunctional, broadband, multi-point frequency and various types of antennas such as remote control, remote measurement, speed measurement, distance measurement and the like on a common antenna array surface, and uses an antenna turntable and a set of servo control system to complete all measurement and control and tasks of space flight targets.
The conventional LTE uplink antenna data transfer scheme is that an EDMA transfers all data of one frame, and when a system is started, an EDMA configuration corresponding to the data transfer scheme is determined and cannot be changed subsequently.
The DSP does not know the subframe ratio of the base station when starting, therefore, the EDMA does not know which subframe data should be moved to the DDR when the antenna data is moved from the LL2 SRAM to the DDR. In order to adapt to the situation of various subframe ratios, all data of one frame is moved from LL2 SRAM to DDR, so that the subframe data of PRACH can be found from one frame of data no matter what subframe ratio of the service is. However, the EDMA would move data of another 9 subframes that cannot be used, for example, in LTE with 20M bandwidth and 2 antennas, the EDMA needs to move data of 8848 × 140 × 2 × 4 bytes within one frame, where data of 8848 × 126 × 2 × 4 bytes, which is not needed for 90% of the movement, is continuously moved along with the operation of the system, and such a huge and continuous data movement amount would occupy the system bus resources for a long time, which seriously affects the access efficiency of other peripherals to the system resources, and may cause an abnormality in the system in an extreme case.
Disclosure of Invention
It is an object of the present invention to provide a method for moving LTE uplink antenna data using EDMA in DSP capable of overcoming the above technical problems,
the method comprises the following steps:
step 1.1, setting the priority of a daemon thread to be lower than the priorities of all service threads so as to avoid the daemon thread from influencing the response time of the service threads, running an SYS/BIOS operating system on TCI6630K2L, wherein the threads of the SYS/BIOS comprise 4 states of ready, running, blocking and termination, newly created tasks are in the ready state by default, each task has 0-15 priorities capable of being configured, the lower the priority is when the number is smaller, the priority 0 is used by an idle thread of the system, the lowest priority capable of being configured for an application program is 1, and the daemon thread sets the priority to be 1;
step 1.2, realizing periodical wake-up of a daemon thread and configuring reasonable wake-up time, creating a semaphore for the daemon thread, when the daemon thread receives the semaphore or waits for the semaphore to be overtime, executing the function of the daemon thread once, no additional module is arranged for the daemon thread SYS/BIOS system to send the semaphore to the daemon thread, the daemon thread is executed when the semaphore is overtime, and the daemon thread is executed and utilized to realize the periodical wake-up of the daemon thread, the daemon thread does not wait for the semaphore and enters a blocking state until the waiting time (time can be configured) is overtime, the daemon thread enters a ready state, an SYS/BIOS scheduler after entering the ready state schedules the daemon thread to start execution, namely, the daemon thread enters a running state, the daemon thread continues to wait for the next semaphore or overtime after the execution is finished, realizing periodical circular wake-up, and configuring the wake-up time (namely, the time for the semaphore to be overtime) of the daemon thread with an interval of 10ms, the daemon thread wakes up periodically according to a time interval of 10ms, when the time is too short and the system load is aggravated by frequent waking, the real-time performance of exception handling is influenced by too long time, and 10ms is a radio frame period and meets the service requirement;
step 2.1, after waking up the daemon thread, checking whether a service has a new subframe proportioning scheme request to issue, in an LTE-TDD system, the length of each radio frame is 10ms and consists of 2 'half frames' of 5ms, each 'half frame' consists of 5 continuous subframes, the length of each subframe is 1ms, except for a special subframe, each subframe consists of 2 continuous time slots, the special subframe is fixedly positioned in a subframe 0 and a subframe 5 and consists of three parts, namely a DwPTS (downlink pilot time slot), a GP (GP time slot) and an UpPTS (uplink pilot time slot);
in a frame structure of LTE-TDD, an uplink or downlink transmission strategy of each subframe can be configured, when the same subframe is in different subframe ratios, the data transmission direction is different, the position of PRACH in one frame data is also different, the first subframe of each frame is fixedly used as a downlink time slot to send system broadcast information, the second subframe is fixedly used as a special time slot, the third subframe is fixedly used as an uplink time slot, the uplink and downlink attributes of each subframe of the second half frame can be configured, the attributes of a conventional time slot and the special time slot can be configured, and the LTE protocol specifies 7 LTE-TDD frame ratio scheme numbers;
step 2.2, when the business changes the sub-frame matching scheme, the new sub-frame matching scheme number is sent to the driving layer through the appointed interface between the driving layer and the business layer;
step 2.3, when no new subframe proportioning scheme request exists, the thread does not do any configuration processing at this time, and directly returns to wait for next awakening;
step 2.4, when a new subframe ratio scheme request exists, the driving layer checks a table according to the subframe ratio number sent by the service layer and according to the table 1 to obtain an EDMA configuration parameter corresponding to the subframe ratio scheme, namely the EDMA configuration parameter of a symbol to be moved in a 10ms wireless frame, SRC identifies a source address of data to be moved, DST identifies a destination address of the data to be moved, and ACNT, BCNT and CCNT determine the data volume to be moved;
step 3.1, close running EDMA move to avoid exception before reconfiguring EDMA parameters:
step 3.2, after the EDMA moving number is closed, the EDMA is reconfigured according to the EDMA configuration parameters corresponding to the new subframe proportioning scheme, each 10ms wireless frame is composed of 140 symbols, the 140 symbols are divided into uplink symbols and downlink symbols, the data of the uplink symbols need to be moved by the EDMA, the data of the downlink symbols do not need to be moved by the EDMA, each symbol is moved to finish automatically triggering the next symbol data to be moved, different subframe proportioning schemes lead to different symbol moving configurations of the EDMA, under a certain subframe proportioning scheme, the symbol 2 does not need to be moved, and when the EDMA is configured, the symbol 1 is moved to finish directly triggering the symbol 3 to be moved and to cross the symbol 2;
and 3.3, restarting the EDMA moving number at the beginning of the next wireless frame after the EDMA configuration is finished, and executing the EDMA data moving of the uplink antenna according to the new subframe configuration scheme ratio.
The method has the following advantages:
1. the method can solve the problem of moving a large amount of invalid data in the process of moving the LTE uplink antenna data by the EDMA and provide a dynamically configurable and more flexible uplink antenna data moving scheme, can reduce the data moving amount of the LTE uplink by 90 percent, takes two antenna data as an example, namely 8848x140x2x4 bytes to 8848x14x2x4 bytes, and because the data of the LTE uplink is continuously carried out in the system working period, the 90 percent reduction amount can greatly reduce the occupation of the EDMA data moving process on a system bus, and avoid the processing delay and system crash caused by bus conflict when other peripheral equipment in the system accesses the system resources.
2. The scheme of the method has great flexibility, and when the subframe ratio is changed by a service, the change of the LTE uplink antenna data transfer scheme can be completed without restarting the system.
3. The method of the invention realizes that EDMA only needs to move the data of one LTE subframe bearing PRACH and can reconfigure the EDMA moving number scheme according to the new subframe ratio issued by the service during the system operation.
Drawings
FIG. 1 is a schematic diagram of subframe matching transmission between a service layer and a driver layer according to the method of the present invention;
FIG. 2 is a schematic overall process flow diagram of the method of the present invention;
FIG. 3 is a schematic diagram illustrating a 10ms wireless frame EDMA chain type shift configuration according to the method of the present invention;
FIG. 4 is a diagram illustrating a SYS/BIOS system thread state switch according to the method of the present invention;
FIG. 5 is a schematic diagram of a subframe structure of an LTE system according to the method of the present invention;
FIG. 6 is a schematic diagram illustrating EDMA configuration parameters of a TCI6630K2L chip according to the method of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, and as shown in fig. 1 and 2, the method of the present invention includes the following steps:
step 1.1, setting the priority of a daemon thread to be lower than the priorities of all business threads so as to avoid the daemon thread from influencing the response time of the business threads, running an SYS/BIOS operating system on TCI6630K2L, wherein the threads of the SYS/BIOS comprise 4 states of ready, running, blocking and termination, as shown in FIG. 4, newly created tasks are in a ready state by default, each task has 0-15 priorities capable of being configured, the smaller the number is, the lower the priority is, the priority 0 is used by an idle thread of the system, the lowest priority capable of being configured for an application program is 1, and the daemon thread sets the priority to be 1;
step 1.2, implementing periodical wakeup of daemon thread and configuring reasonable wakeup time, creating a semaphore for daemon thread, when daemon thread receives a semaphore or waits for semaphore overtime, executing function of daemon thread once, no extra module for daemon thread SYS/BIOS system sends semaphore to it, daemon thread executes when timeout, and utilizes the mechanism to implement periodical wakeup daemon thread, as shown in FIG. 4, daemon thread does not wait for semaphore and enters blocking state until waiting time (time can be configured) is overtime, entering ready state, after entering ready state, SYS/BIOS scheduler schedules daemon thread to start execution, i.e. entering running state, after this execution, continuing to wait for next semaphore or timeout, implementing periodical cyclic wakeup, configuring wakeup time of daemon thread (i.e. time of waiting semaphore) interval as 10ms, the daemon thread wakes up periodically according to a time interval of 10ms, the system load is aggravated if the frequent wake-up time is short, the real-time performance of exception handling is influenced if the frequent wake-up time is long, and the 10ms is a period of a wireless frame and meets the service requirement;
step 2.1, after waking up the daemon thread, checking whether a service has a new subframe matching scheme request to issue, in an LTE-TDD system, each radio frame length is 10ms, and is composed of 2 "half frames" of 5ms, each "half frame" is composed of 5 consecutive subframes, each subframe length is 1ms, except for a special subframe, each subframe is composed of 2 consecutive time slots, the special subframe is fixedly located in subframe 0 and subframe 5, and is composed of three parts, namely DwPTS (downlink pilot time slot), GP (uplink pilot time slot), and UpPTS (uplink pilot time slot), as shown in fig. 5;
in a frame structure of LTE-TDD, an uplink or downlink transmission policy of each subframe is configurable, when the same subframe is in different subframe configurations, data transmission directions may be different, which also causes a difference in position of PRACH in one frame data, a first subframe of each frame is fixedly used as a downlink time slot to transmit system broadcast information, a second subframe is fixedly used as a special time slot, a third subframe is fixedly used as an uplink time slot, uplink and downlink attributes of subframes of a second half frame are configurable, attributes of a normal time slot and a special time slot are also configurable, an LTE protocol specifies 7 LTE-TDD frame configuration scheme numbers, as shown in table 1 below, table 1 is a configuration relationship between a subframe configuration scheme and a frame structure, D in table 1 represents downlink, S represents a special time slot, and U represents uplink;
TABLE 1
Step 2.2, when the business changes the sub-frame matching scheme, the new sub-frame matching scheme number is sent to the driving layer through the appointed interface between the driving layer and the business layer;
step 2.3, when no new subframe proportioning scheme request exists, the thread does not do any configuration processing at this time, and directly returns to wait for next awakening;
step 2.4, when a new subframe matching scheme request exists, the driving layer performs table lookup according to the subframe matching number sent by the service layer according to table 1 to obtain an EDMA configuration parameter corresponding to the subframe matching scheme, namely, the EDMA configuration parameter of a symbol to be moved in a 10ms wireless frame, the EDMA configuration parameter description of the TCI6630K2L chip is shown in fig. 6, the SRC identifies a source address of data to be moved, the DST identifies a destination address of the data to be moved, and the ACNT, the BCNT and the CCNT determine the amount of the data to be moved;
step 3.1, close running EDMA move to avoid exception before reconfiguring EDMA parameters:
step 3.2, after the EDMA movement is closed, reconfiguring the EDMA according to the EDMA configuration parameters corresponding to the new subframe allocation scheme, as shown in fig. 3, each 10ms radio frame is composed of 140 symbols, 140 symbols are divided into uplink symbols and downlink symbols, data of the uplink symbols need to be moved by the EDMA, data of the downlink symbols do not need to be moved by the EDMA, each symbol is moved to finish automatically triggering the movement of next symbol data to be moved, different subframe allocation schemes can cause that the symbol movement configuration of the EDMA is different, for example, under a certain subframe allocation scheme, symbol 2 does not need to be moved, and when the EDMA is configured, symbol 1 is moved to finish directly triggering symbol 3 movement to cross symbol 2;
and 3.3, restarting the EDMA moving number at the beginning of the next wireless frame after the EDMA configuration is finished, and executing the EDMA data moving of the uplink antenna according to the new subframe configuration scheme ratio.
The present invention is explained in detail below by means of a specific example;
when a system is started, a drive layer creates a background daemon thread and configures the wakeup time interval of the daemon thread, namely, whether a new subframe proportioning scheme needs to be processed is checked once every other time;
after a system starts a daemon thread, the daemon thread periodically wakes up to run according to a set time interval, and when the daemon thread runs, whether a service issues a new subframe proportioning scheme is checked;
and when no new subframe proportioning scheme request exists, the daemon thread does not perform any configuration processing and directly returns to wait for next awakening.
When a new subframe matching scheme request exists, further judging whether the new subframe matching scheme is the same as the currently running subframe matching scheme or not, and when the new subframe matching scheme is the same as the currently running subframe matching scheme, directly returning to wait for next awakening without reconfiguring an EDMA parameter;
when the new subframe proportioning scheme is different from the currently running subframe proportioning scheme, the EDMA parameters need to be reconfigured according to the new subframe proportioning;
before reconfiguring the EDMA parameters, closing the EDMA moving number in operation to avoid abnormity;
after the EDMA moving number is closed, the EDMA is reconfigured according to the EDMA configuration parameters corresponding to the new subframe proportioning scheme;
after the EDMA configuration is completed, the EDMA movement is restarted, and then the EDMA data movement of the uplink antenna can be executed according to the new subframe configuration scheme ratio.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the present disclosure should be covered within the scope of the present invention claimed in the appended claims.
Claims (4)
1. A method for moving LTE uplink antenna data by using EDMA in a DSP is characterized by comprising the following steps:
step 1, when a system is started, a drive layer creates a background daemon thread;
step 2, when the system normally runs, periodically waking up a daemon thread;
and 3, reconfiguring the EDMA parameters according to the new subframe proportioning scheme.
2. The method for moving LTE uplink antenna data by using EDMA as claimed in claim 1, wherein the step 1 comprises the following steps:
step 1.1, setting the priority of a daemon thread to be lower than the priorities of all service threads so as to avoid the daemon thread from influencing the response time of the service threads, running an SYS/BIOS operating system on TCI6630K2L, wherein the threads of the SYS/BIOS comprise 4 states of ready, running, blocking and termination, newly created tasks are in the ready state by default, each task has 0-15 priorities capable of being configured, the lower the priority is when the number is smaller, the priority 0 is used by an idle thread of the system, the lowest priority capable of being configured for an application program is 1, and the daemon thread sets the priority to be 1;
step 1.2, realizing periodical wake-up of the daemon thread and configuring reasonable wake-up time, creating a semaphore for the daemon thread, when the daemon thread receives a semaphore or waits for the semaphore to be overtime, executing the function of the daemon thread once, no additional module is provided for the daemon thread SYS/BIOS system to send the semaphore to the daemon thread, the daemon thread is executed when the semaphore is overtime, and the daemon thread is executed and utilized to realize the periodical wake-up of the daemon thread, the daemon thread does not wait for the semaphore and enters a blocking state until the wait time is overtime, the daemon thread enters a ready state, after the ready state, an SYS/BIOS scheduler schedules the daemon thread to start execution, namely, the daemon thread enters an operating state, after the execution is finished, the next semaphore or the timeout continues to be waited for, the periodical circular wake-up is realized, the wake-up time interval of the daemon thread is configured to be 10ms, namely, the daemon thread wakes up periodically according to the time interval of 10ms, 10ms is a radio frame period and meets the service requirements.
3. The method for moving LTE uplink antenna data by using EDMA as claimed in claim 1, wherein said step 2 comprises the following steps:
step 2.1, after waking up the daemon thread, checking whether a service has a new subframe proportioning scheme request to issue, in an LTE-TDD system, the length of each radio frame is 10ms and consists of 2 half frames of 5ms, each half frame consists of 5 continuous subframes, the length of each subframe is 1ms, except for special subframes, each subframe consists of 2 continuous time slots, the special subframes are fixedly positioned in a subframe 0 and a subframe 5 and consist of three parts, namely a DwPTS (downlink pilot time slot), a GP (GP function) and an UpPTS (uplink pilot time slot);
in a frame structure of LTE-TDD, an uplink or downlink transmission strategy of each subframe can be configured, when the same subframe is in different subframe ratios, data transmission directions may be different, which also causes different positions of PRACH in one frame data, a first subframe of each frame is fixedly used as a downlink time slot to send system broadcast information, a second subframe is fixedly used as a special time slot, a third subframe is fixedly used as an uplink time slot, uplink and downlink attributes of each subframe of a second half frame are configurable, attributes of a conventional time slot and the special time slot are also configurable, and an LTE protocol specifies 7 LTE-TDD frame ratio scheme numbers;
step 2.2, when the business changes the sub-frame matching scheme, the new sub-frame matching scheme number is sent to the driving layer through the appointed interface between the driving layer and the business layer;
step 2.3, when no new subframe proportioning scheme request exists, the thread does not do any configuration processing at this time, and directly returns to wait for next awakening;
and 2.4, when a new subframe ratio scheme request exists, the driving layer checks a table according to the subframe ratio number sent by the service layer according to the table 1 to obtain an EDMA configuration parameter corresponding to the subframe ratio scheme, namely the EDMA configuration parameter of the symbol to be moved in the wireless frame of 10ms, SRC identifies the source address of the data to be moved, DST identifies the destination address of the data to be moved, and ACNT, BCNT and CCNT determine the data volume to be moved.
4. The method for moving LTE uplink antenna data by using EDMA as claimed in claim 1, wherein said step 3 comprises the following steps:
step 3.1, close running EDMA move to avoid exception before reconfiguring EDMA parameters:
step 3.2, after the EDMA moving number is closed, the EDMA is reconfigured according to the EDMA configuration parameters corresponding to the new subframe proportioning scheme, each 10ms wireless frame is composed of 140 symbols, the 140 symbols are divided into uplink symbols and downlink symbols, the data of the uplink symbols need to be moved by the EDMA, the data of the downlink symbols do not need to be moved by the EDMA, each symbol is moved to finish automatically triggering the next symbol data to be moved, different subframe proportioning schemes can cause the symbol moving configuration of the EDMA to be different, under a certain subframe proportioning scheme, the symbol 2 does not need to be moved, and when the EDMA is configured, the symbol 1 is moved to finish directly triggering the symbol 3 to be moved to cross the symbol 2;
and 3.3, restarting the EDMA moving number at the beginning of the next wireless frame after the EDMA configuration is completed, and executing the EDMA data moving of the uplink antenna according to the new subframe proportioning scheme.
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