CN101383642A - Baseband unit realizing multi-carrier interface in TDSCDMA AND realizing method thereof - Google Patents
Baseband unit realizing multi-carrier interface in TDSCDMA AND realizing method thereof Download PDFInfo
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Abstract
The invention discloses a baseband unit implementing a multiple carrier interface in the TDSCDMA and an implementation method. When a DSP processes a plurality of carriers and alternates up and down multicarrier baseband data through a standard interface and an interface processing element, the interference receiving and sending a plurality of carrier data in an interface datum is overcome, and the real-time performance of the data transmission is ensured. The method comprises: the interface processing element produces an interrupt signal according to the interface frame pulse timing of a system, after a digital signal processor (DSP) receives the interrupt signal, down data of the carriers are respectively transmitted to the interface processing element according to status messages of memorizers of the interface processing element in interruptive intervals, the interface processing element respectively stores the received data in the corresponding memorizers of all carrier down data; and up data of the carriers can be read from the memorizers of the interface processing element on the up direction according to the predetermined sequence.
Description
Technical field
The present invention relates to the time division duplex (TDD of communication field, Time Division Duplex) system, relate in particular to the Base Band Unit and the multi-carrier interface implementation method that realize realizing in TD SDMA (TDSCDMA, the Time Division SynchronousCode Division Multiple Access) system multi-carrier interface.
Background technology
TDSCDMA is a TDD system, requires whole Network Synchronization, and promptly the data sent of each antenna in cell mouth satisfy minimum error requirements.The TDSCDMA network generally is made up of Base Band Unit BBU (Base Band Unit) and remote radio unit (RRU) RRU (Remote Radio Unit), a BBU can be with a plurality of RRU, connect by optical fiber between the two, different RRU is different to the distance of BBU, in order to reach the requirement of Network Synchronization, the carrier signal that is assigned to different RRUs with regard to inevitable requirement from the time that BBU sends be different.
Base Band Unit (baseband board) is the processing unit of TDSCDMA key.Baseband board is generally by central processor CPU (Central Processing Unit), digital signal processor (DSP, Digital SignalProcessor) and application-specific integrated circuit (ASIC) (ASIC, Application Specific Integrated Circuit) or field programmable device (FPGA, Field Program Gate Array) form.The physical layer process of eating dishes without rice or wine of each carrier wave is generally all finished by DSP, existing or old DSP is owing to be subject to processing the restriction of ability, DSP only can handle the several time slots in a carrier wave or the carrier wave, when a baseband board is handled a plurality of carrier wave, must form like this by multi-disc DSP.
Figure 1 shows that three DSP and the external devices of respectively handling a carrier wave, each DSP handles a uplink and downlink time slot respectively, and can there be conflict in upstream data and downlink data timesharing by the EMIF interface.
Along with the raising of DSP device disposal ability, a DSP can handle a plurality of carrier waves in recent years.Transceive data after DSP handles is often only undertaken by a special purpose interface (as external memory interface EMIF (External Memory Interfaces), quick IO interface RapidIO, PCI Express interface (being called for short PCI-E), double data rate DDR (Double Data Rate) interface or the like) and external special-purpose ASIC or FPGA alternately.When multi-disc DSP handled a plurality of carrier wave, each DSP and external devices all had such interface, and DSP is when handling a plurality of carrier wave, and this interface has only one.The time that the whole network requires each carrier wave to send synchronously in the TDD system is different, even this interface satisfies the data traffic requirement of a plurality of carrier waves, but the problem that still can have the different carrier data collision on an only interface guarantees well that on an interface promptness that data transmit is very crucial problem.This problem is non-existent when original DSP can only handle several time slot of a carrier wave or a carrier wave.
Summary of the invention
The technical problem to be solved in the present invention provides Base Band Unit and the multi-carrier interface implementation method among a kind of TD-SCDMA, handle multicarrier and during at DSP by the alternately descending and up multicarrier base band data of a standard interface and interface treatment element, overcome the conflict of receiving and dispatching a plurality of carrier data at an interface data, guarantee the real-time that data transmit.
In order to address the above problem, the invention provides the implementation method of multi-carrier interface in a kind of TD-SCDMA system, comprise: the interface treatment element regularly produces interrupt signal according to the frame pulse of eating dishes without rice or wine of system, digital signal processor is after DSP receives interrupt signal, in interrupt interval, memory state information according to described interface treatment element, according to predetermined order the downlink data of a plurality of carrier waves is sent to the interface treatment element respectively at down direction, described interface treatment element is stored in the data that receive respectively in the memory of each carrier wave downlink data correspondence; Read the upstream data of a plurality of carrier waves from each memory of interface treatment element according to predetermined order at up direction.
Further, during down direction, described interface treatment element is from being used for storing each memory reading of data of downlink data, send from eating dishes without rice or wine, the time of described reading of data is to shift to an earlier date the delay time that downstream circuitry is handled in the described interface treatment element on the descending lead basis of system requirements more at least.
Further, during up direction, after described interface treatment element receives the side group band data of eating dishes without rice or wine, according to the different due in of each carrier wave, collect the data of each carrier wave, earlier it is stored in the ping-pong structure memory cell of each carrier wave correspondence, more described data is deposited to each memory corresponding with described ping-pong structure memory cell; During down direction, described interface treatment element is read data from descending each memory, earlier the downlink data in each memory is stored in the ping-pong structure memory cell corresponding with each memory, sends from eating dishes without rice or wine again.
Further, the capacity of each memory is determined according to the total capacity of memory space in the interface treatment element and the number of carriers of described DSP and interface treatment element cooperation processing in the described interface treatment element.
Further, described interface treatment element is provided with the state information of each memory, and for the memory of certain carrier wave downlink data of storage, when this memory was full, the state that is provided with was for writing; For the memory of certain carrier wave upstream data of storage, when this memory was empty, the state that is provided with was not for readable.
In order to address the above problem, the present invention also provides the Base Band Unit of realizing multi-carrier interface among a kind of TD-SCDMA, comprise the digital signal processor DSP and the interface treatment element that link to each other by an interface, being provided with a plurality of memories in the described interface treatment element is used for described DSP mutual, each memory is used to store the upstream or downstream data of a corresponding carrier wave, and described interface treatment element is used for regularly producing interrupt signal according to the frame pulse of eating dishes without rice or wine of system; Also be used at down direction, will be stored in respectively from the data that DSP receives the memory of each carrier wave downlink data correspondence; Described DSP after being used to receive interrupt signal, in interrupt interval, according to the memory state information of described interface treatment element, respectively sends to interface treatment element according to predetermined order with the downlink data of a plurality of carrier waves at down direction; Read the upstream data of a plurality of carrier waves from each memory of interface treatment element according to predetermined order at up direction.
Further, described interface treatment element, be used for when down direction, from being used for storing each memory reading of data of downlink data, send from eating dishes without rice or wine, the time of described reading of data is to shift to an earlier date the delay time that downstream circuitry is handled in the described interface treatment element on the descending lead basis of system requirements more at least.
Further, described interface treatment element, be used for when up direction, after receiving the side group band data of eating dishes without rice or wine, according to the different due in of each carrier wave, collect the data of each carrier wave, earlier it is stored in the ping-pong structure memory cell of each carrier wave correspondence, more described data are deposited to each memory corresponding with described ping-pong structure memory cell; When down direction, read data from descending each memory, earlier the downlink data in each memory is stored in the ping-pong structure memory cell corresponding with each memory, send from eating dishes without rice or wine again.
Further, the capacity of each memory is determined according to the total capacity of memory space in the interface treatment element and the number of carriers of described DSP and interface treatment element cooperation processing in the described interface treatment element.
Further, described interface treatment element is used to be provided with the state information of each memory, and for the memory of certain carrier wave downlink data of storage, when this memory was full, the state that is provided with was for writing; For the memory of certain carrier wave upstream data of storage, when this memory was empty, the state that is provided with was not for readable.
The method of the invention is applicable to the base station of TDD mode system.Adopt the method for the invention, simplified the timing relationship of complex interfaces when DSP is connected with external devices under the multicarrier situation in the TDD system greatly.Regularly moving on to the external devices, overcome the problem of DSP timing property difference fully from this interface.Handle multicarrier and during by the mutual descending and up multicarrier base band data of a standard interface and external devices, overcome of the conflict of a plurality of carrier waves at DSP, guarantee the real-time of data transmission an interface data transmitting-receiving.
Description of drawings
Fig. 1 is an interface schematic diagram of being realized a carrier wave and external devices by three DSP;
Fig. 2 is the method flow diagram of the realization multicarrier DSP base band data interface in the present embodiment;
Fig. 3 is the schematic diagram that interface interrupts planning and carrier data distribution;
Fig. 4 is the schematic diagram of multicarrier data storage method in the external devices.
Embodiment
Realize in the present embodiment that a plurality of carrier waves comprise CPU, DSP, interface processing unit (external devices) by the Base Band Unit that an interface transmits data, wherein:
Described DSP after being used to receive interrupt signal, in interrupt interval, according to the memory state information of described interface treatment element, respectively sends to interface treatment element according to predetermined order with the downlink data of a plurality of carrier waves at down direction; Read the upstream data of a plurality of carrier waves from each memory of interface treatment element according to predetermined order at up direction;
Be provided with a plurality of memories in the described interface treatment element and be used for described DSP alternately, each memory is used to store the upstream or downstream data of a corresponding carrier wave, and described interface treatment element is used for regularly producing interrupt signal according to the frame pulse of eating dishes without rice or wine of system; Also be used for when down direction, will be stored in respectively from the data that DSP receives the memory of each carrier wave downlink data correspondence; Also be used for when down direction, from being used for storing each memory reading of data of downlink data, time for reading is to shift to an earlier date the delay time that downstream circuitry is handled in the interface treatment element on the basis of the descending lead of system requirements more at least.Also be used for when up direction, after receiving the side group band data of eating dishes without rice or wine, according to the different due in of each carrier wave, collect the data of each carrier wave, earlier it is stored in the ping-pong structure memory cell of each carrier wave correspondence, more described data is deposited to each memory corresponding with described ping-pong structure memory cell; When down direction, earlier the downlink data in each memory is stored in the ping-pong structure memory cell corresponding with each memory, send from eating dishes without rice or wine again; Also be used to be provided with the state information of each memory, for the memory of certain carrier wave downlink data of storage, when this memory was full, the state that is provided with was for writing; For the memory of certain carrier wave upstream data of storage, when this memory was empty, the state that is provided with was not for readable.
The capacity of each memory is determined according to the total capacity of memory space in the interface treatment element and the number of carriers of described DSP and interface treatment element cooperation processing in the interface treatment element.
The interface treatment element can be the system integrated circuit ASIC or the Field Programmable Gate Array FPGA of special use.
In the present embodiment, utilize the triggering mode that interrupts as the trigger data transmission, be provided with a plurality of memories in the data-interface treatment element, the data that receive in a plurality of interruptions are buffered in respectively in each memory, particularly, the interface treatment element is stored the side group band data sub-carrier of eating dishes without rice or wine at a plurality of memories of correspondence, the different carrier data that DSP is write also sub-carrier are stored at a plurality of memories of correspondence, and described sub-carrier is meant according to the mode of a up/memory of descending carrier and stores.The mode that adopts a plurality of memories to separate buffer memory can effectively be avoided a conflict, and for descending, data is write in the memory of interface processing unit in advance, rather than at needs when eating dishes without rice or wine to send, just obtain from DSP.
Synchronous for guaranteeing all basic station over network, the TDSCDMA system has requirement for carrier wave from the time of eating dishes without rice or wine to send, for this reason, the interface treatment element need calculate descending from each memory the time for reading of reading of data, at down direction, when certain carrier data need be when eating dishes without rice or wine to send, from being used for storing each memory reading of data of downlink data, time for reading is to shift to an earlier date the delay time that downstream circuitry is handled in the interface treatment element on the basis of the descending lead of system requirements at least, to guarantee in the time of eating dishes without rice or wine to send the being descending lead of system configuration, the delay time that described downstream circuitry is handled is difference according to the difference of circuit design and to some extent, can obtain according to emulation; When up direction, the interface treatment element receives carrier data, according to the different due in of each carrier wave, the data of collecting each carrier wave.
The interface treatment element sends to eat dishes without rice or wine unit at down direction from different carrier wave memory cell read datas according to the transmission lead (sending the pre-set time of data relatively with the datum mark of eating dishes without rice or wine) of TDSCDMA system requirements different carrier; According to the trail (receive data with the datum mark of eating dishes without rice or wine relatively and reach the backward time) that different carrier arrives, extract the memory cell that correct data write different carrier respectively at up direction.
As shown in Figure 2, realize that multicarrier DSP may further comprise the steps by the method that an interface transmits data:
The interface treatment element produces corresponding the interruption according to the frame commutator pulse of eating dishes without rice or wine of TDSCDMA system, produces the interval of interrupting and divides the frame pulse of eating dishes without rice or wine (5ms) equally according to baseband chip (chip) data of some.As shown in Figure 3, present embodiment is that example describes with a DSP that can handle 3 carrier waves, the interface treatment element is divided into a plurality of interruptions with the 5ms frame pulse in the TDSCDMA system by the data volume unit of 32chip, have 6400chip promptly to have 200 interruptions between the frame commutator pulse of 5ms in 5ms, each data of interrupting transmitting is respectively the downlink data and the upstream data of a plurality of carrier waves.32chip is the defeated specified baseband chip data volume of tendency to develop, is among the 32chip an interrupt interval, and DSP handles the uplink and downlink data of three carrier waves respectively by predetermined order, as shown in Figure 3.
The number of interrupting is relevant with the size of time delay and storage, simultaneously also can be with reference to the accessible carrier number of DSP and the speed of eating dishes without rice or wine, if interrupt many, then time delay is little, storage is little, but the expense of DSP is then relatively large, efficient is low, otherwise, if interrupt few, then time delay is big, storage is big, but the expense of DSP is little, efficient is high, considers usually to get compromise, adopts 32chip to divide in the present embodiment and interrupts, in other embodiments, also can adopt 16chip or 48chip equivalence.
The total speed of this interface will be considered the total speed of a plurality of carrier waves, the conflict of up-downgoing simultaneously also will be considered, be exactly total be the up-downgoing conflict of comprehensively considering simultaneously of a plurality of carrier wave downlink traffics of speed, so-called up-downgoing conflict is meant when up-downgoing timesharing fully, just speed must be multiply by 2 again.
Here DSP is a masters, and in an interrupt response, it promptly can be read, and also can write, if down direction DSP has data, then DSP can write in the time that is fit to; If DSP finds that external interface unit has on the new data, then read these data.DSP is according to the state information of the memory block in the interrupt inquiry interface treatment element, when each interrupts, DSP inquires about carrier wave 1 in order, 2, whether the memory of 3 correspondences can be read and write, promptly inquire about each carrier wave correspondence the interface treatment element on/descending memory state position confirms whether can continue to write or read, if can read or write, so just send the baseband chip data of the pre-defined quantity of each carrier wave in order, receive the baseband chip data of pre-defined quantity at the up direction of each interrupt interval by the carrier wave order at the down direction of each interrupt interval.If some carrier wave can not be read and write, then skip this time period, carry out the read-write of next carrier wave.Each is independently between interrupting, and each carrier wave was was only read and write once between each interrupted.
When DSP reads and writes by this interface, all the gating of different carrier memory cell to be carried out, which memory cell will be read and write so that allow the interface treatment element understand current DSP.
The interface treatment element is judged the read-write state of each carrier wave memory cell according to the entrance and exit data conditions, when all 5 32chip have expired, just puts corresponding marker bit for writing when descending.When up when 5 32chip all empty the time, just put corresponding marker bit for not readable, empty, completely state is not matched by the dsp interface and the speed of eating dishes without rice or wine and causes.
The size of different carrier memory cell is decided according to the total capacity of memory space in the interface treatment element and the number of carriers of DSP and interface treatment element cooperation processing in the interface treatment element, can be the specified baseband chip data volume sum of transmitting between a plurality of interruptions, principle be exactly to allow DSP earlier more data be write the interface treatment element as much as possible.For example, in the present embodiment each carrier wave up/following line storage unit can store 5 32chip.
As shown in Figure 4, when downlink transmission data, the interface treatment element requires according to the timing of each carrier wave of TDSCDMA that (this regularly requires is the distance of system according to networking, be converted into different time delays, be configured by CPU), from each memory, read and write corresponding data, be written to the 1chip memory cell of another table tennis, carry out continuous reading and writing data with the base band speed of eating dishes without rice or wine.The ping-pong structure memory cell is used to finish the conversion of wireless side data format, also finishes possible rate transition simultaneously.In other embodiments, if need not format conversion, then also can not adopt ping-pong structure, the data in the interface treatment element memory cell directly are sent to eats dishes without rice or wine.
Described interface treatment element and eat dishes without rice or wine between, during down direction, the interface treatment element is from being used for storing each memory reading of data of downlink data, carrier data in the memory is stored in the corresponding ping-pong structure memory cell, send from eating dishes without rice or wine again, from memory the time of reading of data on the basis of the descending lead of system requirements at least in advance in the interface treatment element downstream circuitry handle the delay time of (comprising the ping-pong structure memory circuit); During up direction, after the interface treatment element receives the side group band data of eating dishes without rice or wine, according to the different due in of each carrier wave, collect the data of each carrier wave, elder generation to the ping-pong structure memory cell of each carrier wave correspondence, deposits storage to each memory corresponding with described ping-pong structure memory cell again with described data.
The present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the present invention, and these change and be out of shape the protection range that all should belong to the appended claim of the present invention accordingly.
Claims (10)
1, the implementation method of multi-carrier interface in a kind of TD-SCDMA system is characterized in that,
In Base Band Unit, the interface treatment element regularly produces interrupt signal according to the frame pulse of eating dishes without rice or wine of system, digital signal processor is after DSP receives interrupt signal, in interrupt interval, memory state information according to described interface treatment element, according to predetermined order the downlink data of a plurality of carrier waves is sent to the interface treatment element respectively at down direction, described interface treatment element is stored in the data that receive respectively in the memory of each carrier wave downlink data correspondence; Read the upstream data of a plurality of carrier waves from each memory of interface treatment element according to predetermined order at up direction.
2, the method for claim 1 is characterized in that,
During down direction, described interface treatment element is from being used for storing each memory reading of data of downlink data, send from eating dishes without rice or wine, the time of described reading of data is to shift to an earlier date the delay time that downstream circuitry is handled in the described interface treatment element on the descending lead basis of system requirements more at least.
3, method as claimed in claim 2 is characterized in that,
During up direction, after described interface treatment element receives the side group band data of eating dishes without rice or wine, according to the different due in of each carrier wave, collect the data of each carrier wave, earlier it is stored in the ping-pong structure memory cell of each carrier wave correspondence, more described data is deposited to each memory corresponding with described ping-pong structure memory cell;
During down direction, described interface treatment element is stored to the downlink data in each memory in the ping-pong structure memory cell corresponding with each memory earlier, sends from eating dishes without rice or wine again.
4, the method for claim 1 is characterized in that,
The capacity of each memory is determined according to the total capacity of memory space in the interface treatment element and the number of carriers of described DSP and interface treatment element cooperation processing in the described interface treatment element.
5, the method for claim 1 is characterized in that,
Described interface treatment element is provided with the state information of each memory, and for the memory of certain carrier wave downlink data of storage, when this memory was full, the state that is provided with was for writing; For the memory of certain carrier wave upstream data of storage, when this memory was empty, the state that is provided with was not for readable.
6, a kind of Base Band Unit of implementing the method for claim 1 comprises the digital signal processor DSP and the interface treatment element that link to each other by an interface, it is characterized in that,
Be provided with a plurality of memories in the described interface treatment element and be used for described DSP alternately, each memory is used to store the upstream or downstream data of a corresponding carrier wave, and described interface treatment element is used for regularly producing interrupt signal according to the frame pulse of eating dishes without rice or wine of system; Also be used at down direction, will be stored in respectively from the data that DSP receives the memory of each carrier wave downlink data correspondence;
Described DSP after being used to receive interrupt signal, in interrupt interval, according to the memory state information of described interface treatment element, respectively sends to interface treatment element according to predetermined order with the downlink data of a plurality of carrier waves at down direction; Read the upstream data of a plurality of carrier waves from each memory of interface treatment element according to predetermined order at up direction.
7, Base Band Unit as claimed in claim 6 is characterized in that,
Described interface treatment element, be used for when down direction, from being used for storing each memory reading of data of downlink data, send from eating dishes without rice or wine, the time of described reading of data is to shift to an earlier date the delay time that downstream circuitry is handled in the described interface treatment element on the descending lead basis of system requirements more at least.
8, Base Band Unit as claimed in claim 7 is characterized in that,
Described interface treatment element, be used for when up direction, after receiving the side group band data of eating dishes without rice or wine, according to the different due in of each carrier wave, collect the data of each carrier wave, earlier it is stored in the ping-pong structure memory cell of each carrier wave correspondence, more described data is deposited to each memory corresponding with described ping-pong structure memory cell; When down direction, earlier the downlink data in each memory is stored in the ping-pong structure memory cell corresponding with each memory, send from eating dishes without rice or wine again.
9, Base Band Unit as claimed in claim 6 is characterized in that,
The capacity of each memory is determined according to the total capacity of memory space in the interface treatment element and the number of carriers of described DSP and interface treatment element cooperation processing in the described interface treatment element.
10, Base Band Unit as claimed in claim 6 is characterized in that,
Described interface treatment element is used to be provided with the state information of each memory, and for the memory of certain carrier wave downlink data of storage, when this memory was full, the state that is provided with was for writing; For the memory of certain carrier wave upstream data of storage, when this memory was empty, the state that is provided with was not for readable.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102104557A (en) * | 2009-12-18 | 2011-06-22 | 上海贝尔股份有限公司 | Baseband circuit and application method thereof |
| CN102740511A (en) * | 2011-04-12 | 2012-10-17 | 中兴通讯股份有限公司 | Baseband radio frequency interface based on software defined radio (SDR) and application method thereof |
| CN103379515A (en) * | 2012-04-28 | 2013-10-30 | 鼎桥通信技术有限公司 | Time delay measuring method and device of double-module base station |
| CN105791199A (en) * | 2016-02-19 | 2016-07-20 | 京信通信技术(广州)有限公司 | Carrier transmission separation method and system |
| CN108132904A (en) * | 2016-12-01 | 2018-06-08 | 深圳市中兴微电子技术有限公司 | A kind of baseband intermediate frequency exchange method and system |
| CN114124334A (en) * | 2021-11-16 | 2022-03-01 | 紫光展锐(重庆)科技有限公司 | Air interface data packet processing method, client, equipment and medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4074552B2 (en) * | 2003-05-29 | 2008-04-09 | 京セラ株式会社 | Communication device and inspection method thereof |
| KR20060111811A (en) * | 2005-04-25 | 2006-10-30 | 한국전자통신연구원 | Diversity apparatus and method for receiving the signal using switch |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102104557A (en) * | 2009-12-18 | 2011-06-22 | 上海贝尔股份有限公司 | Baseband circuit and application method thereof |
| CN102740511A (en) * | 2011-04-12 | 2012-10-17 | 中兴通讯股份有限公司 | Baseband radio frequency interface based on software defined radio (SDR) and application method thereof |
| WO2012139389A1 (en) * | 2011-04-12 | 2012-10-18 | 中兴通讯股份有限公司 | Baseband radio frequency interface based on software defined radio and application method therefor |
| CN102740511B (en) * | 2011-04-12 | 2016-01-20 | 深圳市中兴微电子技术有限公司 | A kind of baseband radio interface based on software radio and application process thereof |
| CN103379515A (en) * | 2012-04-28 | 2013-10-30 | 鼎桥通信技术有限公司 | Time delay measuring method and device of double-module base station |
| CN103379515B (en) * | 2012-04-28 | 2015-12-16 | 鼎桥通信技术有限公司 | The time-delay measuring method of dual-mode base station and device |
| CN105791199A (en) * | 2016-02-19 | 2016-07-20 | 京信通信技术(广州)有限公司 | Carrier transmission separation method and system |
| CN108132904A (en) * | 2016-12-01 | 2018-06-08 | 深圳市中兴微电子技术有限公司 | A kind of baseband intermediate frequency exchange method and system |
| CN114124334A (en) * | 2021-11-16 | 2022-03-01 | 紫光展锐(重庆)科技有限公司 | Air interface data packet processing method, client, equipment and medium |
| CN114124334B (en) * | 2021-11-16 | 2024-04-23 | 紫光展锐(重庆)科技有限公司 | Processing method, client, equipment and medium of air interface data packet |
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| CN101383642B (en) | 2013-05-08 |
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