CN108011836A - Transmission method, device, terminal device and storage medium based on L2 cache - Google Patents
Transmission method, device, terminal device and storage medium based on L2 cache Download PDFInfo
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- CN108011836A CN108011836A CN201711172590.6A CN201711172590A CN108011836A CN 108011836 A CN108011836 A CN 108011836A CN 201711172590 A CN201711172590 A CN 201711172590A CN 108011836 A CN108011836 A CN 108011836A
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- file
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/29—Flow control; Congestion control using a combination of thresholds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/60—Queue scheduling implementing hierarchical scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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- Computer Networks & Wireless Communication (AREA)
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- Information Transfer Between Computers (AREA)
Abstract
The invention discloses a kind of transmission method based on L2 cache, comprise the following steps：Receive the file request instruction that user sends；The file for obtaining pre-request is instructed according to the file request；When the file of the pre-request is the first class file, the file of the pre-request is transmitted to the user by relay station；Wherein, first class file is that the request frequency being stored in all relay stations is higher than the popular file of frequency threshold；When the file of the pre-request is the second class file, the relay station there are the pre-request file is obtained, and transmits the file of the pre-request to user by the relay station of the file there are pre-request；Wherein, second class file is time popular file that the request frequency being stored in the relay station of part is less than frequency threshold.The invention also discloses a kind of transmitting device based on L2 cache, terminal device and storage medium, strengthens overall data throughout, optimization system performance.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of transmission method based on L2 cache, device, terminal device and
Storage medium.
Background technology
With the rapid growth of multimedia service demand, it is foreseen that wireless communication industry will in following several years
It is doubled and redoubled.It is estimated that wireless data transmission rate can increase by seven times from 2016 to 2021.Meanwhile not far future, wirelessly
Communication will mainly provide service centered on content rather than centered on connection.It means that in most cases, clothes
Business will no longer be by between transmitter and user it is point-to-point connection provide, but according to user ask content point-to-point services or
By broadcasting point-to-point services.These services centered on content include video on demand, Streaming Media, advertisement etc..
In order to meet the needs of wireless data service and the service centered on content, the advanced technology of associated support is wide
General research.A kind of very promising method is to be combined cooperation with caching subsidiary communications.Because by such method, can
Realize and improve handling capacity, multiple-access, the performance gain of wireless broadcast communication.Under normal conditions, for caching subsidiary communications
Say, file can be classified by their popularity.File can make choice and then be buffered according to their popularity
Repeater so that overall throughput performance is strengthened.
In the implementation of the present invention, inventor has found that at least there are the following problems in the prior art：
The first implementation method of the prior art is to access at most, namely the highest file storage of file popularity exists
In caching, it is known as maximum popular content storage, or MPC mechanism, this scheme make the file of user's frequent requests obtain quickly
Provide, be conducive to improve the high file transfer rate of popularity, it is done so that can cause to transmit during time popular file speed compared with
The low or bit error rate is high.
Second of implementation method of the prior art is that buffer memory capacity is divided half-and-half, and will most popular and time popular file difference
It is stored on the half space of caching, is known as the storage of maximum diversity content, or LDC mechanism, this mechanism can ensures to use at random
The transmission rate and the reduction bit error rate when most popular or secondary popular file are asked in family, or in other words, pass through LDC mechanism systems
The speed and the bit error rate of the most popular and secondary popular file of transmission are equal, so can meet request of the user to different files,
Because referred to herein as maximum diversity content stores.But because the request probability of secondary prevalence file is less than most popular file, LDC is this
The method that directly space is divided into two is too simple directly, so does the system performance that can not have been obtained.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of transmission method based on L2 cache, device, terminal
Equipment and storage medium, strengthen overall data throughout, optimization system performance.
The present invention provides a kind of transmission method based on L2 cache, comprise the following steps：
Receive the file request instruction that user sends；
The file for obtaining pre-request is instructed according to the file request；
When the file of the pre-request is the first class file, the pre-request is transmitted to the user by relay station
File；Wherein, first class file is that the request frequency being stored in all relay stations is higher than the popular file of frequency threshold；
When the file of the pre-request is the second class file, the relay station there are the pre-request file is obtained, and lead to
The relay station for crossing the file there are pre-request transmits the file of the pre-request to user；Wherein, second class file
Request frequency to be stored in the relay station of part is less than time popular file of frequency threshold.
Preferably, on each repeater, first class file is stored in the repeater caching and is less than optimal caching
In the space of threshold value.
Preferably, all repeaters are divided into different cells；
Second class file is allocated corresponding cell and is stored in each repeater caching of the cell more than optimal
In the space of cache threshold.
Preferably, described when the file of the pre-request is the second class file, there are the pre-request file for acquisition
Relay station, and the file of the pre-request is transmitted by the relay station of the file there are pre-request to user, it is specially：
When the pre-request file is the second class file, all relayings of the second class file affiliated subdistrict are obtained
Stand；
Detecting to whether there is in the first class file waiting for transmission or request queue in the transmission queue of the relay station is
The no request that there is the first class file of request；
If so, the first kind file request after the first class file end of transmission in queue to be transmitted or in request queue
The file of the pre-request is transmitted after being disposed；
If it is not, transmit the file of the pre-request；Wherein, the transmission success rate of second class file meets
Preferably, further include：
When the pre-request file is three class file, the pre-request file is obtained from source station and is transferred to use
Family；Wherein, the 3rd class file is the file for being not stored in relay station.
Preferably, the optimal cache threshold
Wherein, the K={ 1,2 ..., K } represents the database for the K file that user will ask, and 0<α<1.
Present invention also offers a kind of transmitting device based on L2 cache, including：
Request reception unit, for receiving the file request instruction of user's transmission；
File obtaining unit, the file for obtaining pre-request is instructed according to the file request；
First transmission unit, for when the file of the pre-request is the first class file, by relay station to the use
Transmit the file of the pre-request in family；Wherein, first class file is that the request frequency being stored in all relay stations is higher than
The popular file of frequency threshold；
Second transmission unit, for when the file of the pre-request is the second class file, obtaining, there are the pre-request
The relay station of file, and the file of the pre-request is transmitted by the relay station of the file there are pre-request to user；Its
In, second class file is time popular file that the request frequency being stored in the relay station of part is less than frequency threshold.
Preferably, on each repeater, first class file is stored in the repeater caching and is less than optimal caching
In the space of threshold value.
Preferably, all repeaters are divided into different cells；
Second class file is allocated corresponding cell and is stored in each repeater caching of the cell more than optimal
In the space of cache threshold.
Preferably, second transmission unit specifically includes：
Acquisition module is small belonging to second class file for when the pre-request file is the second class file, obtaining
All relay stations in area；
Detection module, in the transmission queue for detecting the relay station with the presence or absence of the first class file waiting for transmission or
With the presence or absence of the request of the first class file of request in request queue；
First transport module, for if so, after the first class file end of transmission in queue to be transmitted or request queue
In first kind file request be disposed after transmit the file of the pre-request；
Second transport module, for if it is not, transmitting the file of the pre-request；Wherein, the transmission of second class file
Success rate meets
Preferably, further include：
3rd transmission unit, for when the pre-request file is three class file, obtained from source station it is described it is pre- please
Seek file and be transferred to user；Wherein, the 3rd class file is the file for being not stored in relay station.
Preferably, the optimal cache thresholdIts
In, the K={ 1,2 ..., K } represents the database for the K file that user will ask, and 0<α<1.
Present invention also offers a kind of transmission terminal equipment based on L2 cache, including processor, memory and deposit
Storage is in the memory and is configured as the computer program performed by the processor, and the processor performs the calculating
The transmission method based on L2 cache described in above-mentioned middle any one is realized during machine program.
Present invention also offers a kind of computer-readable recording medium, the computer-readable recording medium includes storage
Computer program, wherein, equipment where controlling the computer-readable recording medium when the computer program is run performs
The transmission method based on L2 cache described in above-mentioned middle any one.
An embodiment of the present invention provides a kind of transmission method based on L2 cache, device, terminal device and storage medium,
And have the advantages that：
The present invention is instructed by receiving the file request that user sends, and is instructed according to the file request and obtained pre-request
File, when the file for judging the pre-request is the first class file, by relay station to the user transmit it is described it is pre- please
The file asked, first class file are that the request frequency being stored in all relay stations is higher than the popular file of frequency threshold,
When the file for judging the pre-request is the second class file, the relay station there are the pre-request file is obtained, and pass through institute
The relay station for stating the file there are pre-request transmits the file of the pre-request to user, and second class file is to be stored in portion
Divide the request frequency in relay station less than time popular file of frequency threshold.The embodiment of the present invention disclosure satisfy that user to not identical text
The request of part, the popularity of comprehensive each file access enable each file to obtain the highest transmission in its file transmission range
Speed and lowest bit error rate, strengthen overall data throughout, optimization system transmission performance so that system obtains preferably transmission
Terminal rate.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, attached drawing needed in embodiment will be made below
Simply introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, without creative efforts, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the flow diagram that first embodiment of the invention provides the transmission method based on L2 cache.
Fig. 2 be the first class file, the second class file and the 3rd class file that first embodiment of the invention provides storage with
Transmit schematic diagram.
Fig. 3 is first kind text when the optimal cache threshold M that first embodiment of the invention provides changes with outage probability
The schematic diagram of the efficiency of transmission of part and the second class file change.
Fig. 4 is the signal that the α values that the optimal cache threshold M that first embodiment of the invention provides is distributed with Zipf change
Figure.
Fig. 5 is the structure diagram that third embodiment of the invention provides the transmitting device based on L2 cache.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, first embodiment of the invention provides a kind of transmission method based on L2 cache, it can be by terminal
Equipment performs, and comprises the following steps：
S11, receives the file request instruction that user sends.
In embodiments of the present invention, the terminal device can be the meter such as cloud server, desktop PC, notebook
Calculate equipment.
In embodiments of the present invention, the terminal device receives user and is referred to by the file request that its user terminal is sent
Order, the terminal device parse the file request instruction to obtain the solicited message of client.If K=1,2 ..., and K } represent to use
The database for the K file that family will ask, the probability that each file is requested by a user meet that Zipf is distributed, and Zipf laws can be with
It is expressed as in the corpus of natural language, the number that word occurs is inversely proportional with its ranking in frequency meter, note c
The probability that a file is requested by a user is fc, thenWherein, 0<α<1 is a parameter of Zipf distributions.α is bigger,
Then show that more multifile request is concentrated on the first class file., can be with assuming that each relay station has one capacity is locally stored
Cache C file.Content is divided into two groups, and first group includes most popular M the first class files, and second group includes time K- of prevalence
M the second class files.M is the optimal cache threshold of cache flow style of writing part.Once we increase the placement caching of M prevalence files,
So as to which unwelcome K-M files will be reduced, vice versa.Since first group of M file is the first popular class file, so I
Cache them on all repeaters.In order to cache more first class files, we only cache K-M times popular the
Two class files are on the repeater of part.Therefore, in order to adapt to capacity of the K file in each repeater, it is necessary to by repeater
Subregion, according to its geographical location, isArea.If it is stored in all repeaters in l areas and is stored in kth area
File set on all repeaters is respectively (K-M)l(K-M)k, wherein 1≤l≤K, 1≤k≤K, as l ≠ k, (K-M)lWith
(K-M)kThe second class file in file set may be different.As shown in Fig. 2, repeater R1With repeater R2Belong to 1st area, repeater
R3With repeater R4Belong to 2nd area, the first popular class file M file caches are on all repeaters, secondary the second popular class file
(K-M)1(K-M)21st area and 2nd area of repeater are buffered in respectively.
S12, the file for obtaining pre-request is instructed according to the file request.
In embodiments of the present invention, the terminal device passes through parsing after the file request instruction that user sends is received
To obtain the solicited message of client, the terminal device reads the solicited message to obtain the use for the file request instruction
The information of the file of family pre-request, judges the type of the file to be asked of user to take different biographies respectively according to file type
Defeated mode.
S13, when the file of the pre-request is the first class file, by relay station to the user transmit it is described it is pre- please
The file asked；Wherein, first class file is that the request frequency being stored in all relay stations is higher than the prevalence of frequency threshold
File.
In embodiments of the present invention, first class file is that the request frequency being stored in all relay stations is higher than frequency
The popular file of threshold value, and on each repeater, memory space, the first kind text are divided according to the optimal cache threshold
Part is stored in the repeater caching and is less than in the space of optimal cache threshold, wherein, the frequency threshold is arranged to 85%, when
So, the frequency threshold may be alternatively provided as 80%, 88% or 90% etc., and the present invention does not do the value range of the frequency threshold
Any restriction.
When the terminal device judges the file of the pre-request for the first class file, the terminal device passes through relaying
Device transmits the file of the pre-request to the user, referring to Fig. 2, since the first class file stores in all repeaters,
Then as user UE1When the file of request is the first class file, all repeaters, which can cooperate with, is transferred to same demand file
Ask user, if merged in transmitting terminal using maximum than sending, signal-to-noise ratio be all repeater signal-to-noise ratio and, pass at this time
Defeated performance is optimal, and interruption rate is minimum.
S14, when the file of the pre-request is the second class file, obtains the relay station there are the pre-request file,
And the file of the pre-request is transmitted to user by the relay station of the file there are pre-request；Wherein, second class
File is time popular file that the request frequency being stored in the relay station of part is less than frequency threshold.
In embodiments of the present invention, second class file is that the request frequency being stored in the relay station of part is less than frequency
Time popular file of threshold value, and all repeaters are divided into different cells, referring to Fig. 2, repeater R1With repeater R2
Belong to a cell, repeater R3With repeater R4Belong to another cell, each cell stores different the second class texts
Part, second class file be allocated corresponding cell and be stored in the cell each repeater caching be more than optimal caching threshold
In the space of value.
In embodiments of the present invention, because the user of the first class file of request is by all repeater cooperation with service, and ask
The user of second class file is only serviced by partial interruption station.Since all relay station cooperation with service are than part relay station cooperation with service
Interrupt rate it is good, remember P1 eFor the Transmission rate of all relay station cooperation with service, P is remembered2 eFor part relay station cooperation with service
Transmission rate, then P1 e＜ P2 e, i.e. the Transmission probability of the second class file of Transmission likelihood ratio of the first class file is more
It is good.On this basis, in order to obtain minimum average B configuration Transmission rate, we will preferentially ensure to transmit asking for first kind file user
Ask, i.e., when user asks the first popular class file, the request is always successful.On the contrary, when user asks the second class file,
If not having the current request of the first class file in request queue, its request could succeed, and otherwise need to wait until first
The request of class file and the end of transmission, second class file can be just transmitted.Referring to Fig. 3, work as optimal cache threshold M values
During increase, the outage probability increase of first group of file transmission, this is because, with the increase of M, the number of files phase of the first class file
Ground is answered to become larger, so that cause the transmission probability higher of the first class file, in contrast, the outage probability meeting of second group of file transmission
Reduced because transmission opportunity is few.When M increases to maximum 500, the file that all relay stations are cached and transmitted all is first kind text
Part, equally, when M is reduced to zero, the file that all relay stations are cached and transmitted all is the second class file.
In embodiments of the present invention, when the terminal device judges the pre-request file for the second class file, obtain
All relay stations of the second class file affiliated subdistrict, then in the transmission queue of the terminal device detection relay station
With the presence or absence of the request that whether there is the first class file of request in the first class file waiting for transmission or request queue, if in the presence of,
Institute after first kind file request after the first class file end of transmission in queue to be transmitted or in request queue is disposed
State the file that terminal device transmits the pre-request again；If being not present, the terminal device directly transmits the text of the pre-request
Part；Wherein, the transmission success rate of second class file meets
In embodiments of the present invention, the optimal cache thresholdIts
In, the K={ 1,2 ..., K } represents the database for the K file that user will ask, and 0<α<1；Referring to Fig. 4, Fig. 4 is
P1 e=0.1, P2 eThe schematic diagram that the optimal cache threshold M changes with Zipf profile parameters in the case of=0.11, with ginseng
The increase of number α, the optimal cache threshold M values reduce, and weigh the transmission probability between popular and secondary popular two file sets；When
During α increases, the request probability increase of the first popular class file, then time stream can be made by reducing the value of the optimal cache threshold M
The second capable class file obtains more multi-request and the chance of transmission；Conversely, when α is smaller, to secondary the second popular class file
Probability increase is asked, so the optimal cache threshold M must be improved, to reduce the conveyer of unwelcome second class file
Meeting, so as to avoid worse performance output caused by excessive unwelcome second class file transmission.
In embodiments of the present invention, an embodiment of the present invention provides a kind of transmission method based on L2 cache, device, lead to
Cross and receive the file request instruction that user sends, and the file for obtaining pre-request is instructed according to the file request, when judging
When the file for stating pre-request is the first class file, the file of the pre-request is transmitted to the user by relay station, described the
One class file is the popular file that the request frequency that is stored in all relay stations is higher than frequency threshold, when judging the pre-request
File when being the second class file, obtain the relay station there are the pre-request file, and pass through the text there are pre-request
The relay station of part transmits the file of the pre-request to user, and second class file is the request being stored in the relay station of part
Time popular file of the frequency less than frequency threshold.The embodiment of the present invention disclosure satisfy that request of the user to different files, comprehensive every
The popularity of a file access enables each file to obtain highest transmission speed and minimum error code in its file transmission range
Rate, strengthens overall data throughout, optimization system transmission performance so that system obtains more preferable transmission terminal rate.
For the ease of the understanding of the present invention, some currently preferred embodiments of the present invention will be done further retouch below
State.
Second embodiment of the invention：
On the basis of first embodiment of the invention, further include：
When the pre-request file is three class file, the pre-request file is obtained from source station and is transferred to use
Family；Wherein, the 3rd class file is the file for being not stored in relay station.
In embodiments of the present invention, the limited storage space of each repeater, therefore when the terminal device is in all
When the file of the pre-request is not all detected on device, the terminal device obtains the pre-request file from source station and passes
User is defeated by, referring to Fig. 2, the source station passes through repeater R43rd class file is transferred to user UE4。
Referring to Fig. 5, third embodiment of the invention provides a kind of transmitting device based on L2 cache, including：
Request reception unit 11, for receiving the file request instruction of user's transmission.
File obtaining unit 12, the file for obtaining pre-request is instructed according to the file request.
First transmission unit 13, for when the file of the pre-request is the first class file, by relay station to described
User transmits the file of the pre-request；Wherein, first class file is that the request frequency being stored in all relay stations is high
In the popular file of frequency threshold.
Second transmission unit 14, for when the file of the pre-request is the second class file, obtain there are it is described it is pre- please
Seek the relay station of file, and transmit the file of the pre-request to user by the relay station of the file there are pre-request；
Wherein, second class file is time popular file that the request frequency being stored in the relay station of part is less than frequency threshold.
Preferably, on each repeater, first class file is stored in the repeater caching and is less than optimal caching
In the space of threshold value.
Preferably, all repeaters are divided into different cells.
Second class file is allocated corresponding cell and is stored in each repeater caching of the cell more than optimal
In the space of cache threshold.
Preferably, second transmission unit specifically includes：
Acquisition module is small belonging to second class file for when the pre-request file is the second class file, obtaining
All relay stations in area.
Detection module, in the transmission queue for detecting the relay station with the presence or absence of the first class file waiting for transmission or
With the presence or absence of the request of the first class file of request in request queue.
First transport module, for if so, after the first class file end of transmission in queue to be transmitted or request queue
In first kind file request be disposed after transmit the file of the pre-request.
Second transport module, for if it is not, transmitting the file of the pre-request；Wherein, the transmission of second class file
Success rate meets
Preferably, further include：
3rd transmission unit, for when the pre-request file is three class file, obtained from source station it is described it is pre- please
Seek file and be transferred to user；Wherein, the 3rd class file is the file for being not stored in relay station.
Preferably, the optimal cache threshold
Wherein, the K={ 1,2 ..., K } represents the K file that user will ask, and 0<α<1.
The transmission terminal equipment based on L2 cache that fourth embodiment of the invention provides.The embodiment is delayed based on two level
The transmission terminal equipment deposited includes：Processor, memory and it is stored in the memory and can transports on the processor
Capable computer program, such as the transmission program based on L2 cache.The processor is realized when performing the computer program
Step in above-mentioned each transmission method embodiment based on L2 cache, such as the step S11 shown in Fig. 1.Alternatively, the place
Reason device realizes the function of each module/unit in above-mentioned each device embodiment, such as the first transmission when performing the computer program
Unit.
Exemplary, the computer program can be divided into one or more module/units, one or more
A module/unit is stored in the memory, and is performed by the processor, to complete the present invention.It is one or more
A module/unit can be the series of computation machine programmed instruction section that can complete specific function, which is used to describe institute
State implementation procedure of the computer program in the transmission terminal equipment based on L2 cache.
The transmission terminal equipment based on L2 cache can be desktop PC, notebook, palm PC and cloud
Hold the computing devices such as server.The transmission terminal equipment based on L2 cache may include, but be not limited only to, and processor, deposit
Reservoir.It will be understood by those skilled in the art that it can include more some than more or fewer components mentioned above, or combination
Component, or different components, for example, the transmission terminal equipment based on L2 cache can also include input-output equipment,
Network access equipment, bus etc..
Alleged processor can be central processing unit (Central Processing Unit, CPU), can also be it
His general processor, digital signal processor (Digital Signal Processor, DSP), application-specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor can also be any conventional processor
Deng the processor is the control centre of the transmission terminal equipment based on L2 cache, utilizes various interfaces and circuit to connect
Connect the various pieces of the entirely transmission terminal equipment based on L2 cache.
The memory can be used for storing the computer program and/or module, and the processor is by running or performing
The computer program and/or module being stored in the memory, and the data being stored in memory are called, described in realization
The various functions of transmission terminal equipment based on L2 cache.The memory can mainly include storing program area and storage data
Area, wherein, storing program area can storage program area, needed at least one function application program (such as sound-playing function,
Image player function etc.) etc.；Storage data field can be stored uses created data (such as voice data, electricity according to mobile phone
Script for story-telling etc.) etc..In addition, memory can include high-speed random access memory, nonvolatile memory can also be included, such as
Hard disk, memory, plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure
Digital, SD) card, flash card (Flash Card), at least one disk memory, flush memory device or other volatibility are consolidated
State memory device.
Wherein, if module/unit of the transmission terminal integration of equipments based on L2 cache is with SFU software functional unit
Form realize and be used as independent production marketing or in use, can be stored in a computer read/write memory medium.
Based on such understanding, the present invention realizes all or part of flow in above-described embodiment method, can also pass through computer journey
Sequence instructs relevant hardware to complete, and the computer program can be stored in a computer-readable recording medium, the meter
Calculation machine program is when being executed by processor, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, the computer program bag
Include computer program code, the computer program code can be source code form, object identification code form, executable file or
Some intermediate forms etc..The computer-readable medium can include：Any reality of the computer program code can be carried
Body or device, recording medium, USB flash disk, mobile hard disk, magnetic disc, CD, computer storage, read-only storage (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and
Software distribution medium etc..It should be noted that the content that the computer-readable medium includes can be according in jurisdiction
Legislation and the requirement of patent practice carry out appropriate increase and decrease, such as in some jurisdictions, according to legislation and patent practice, meter
Calculation machine computer-readable recording medium does not include electric carrier signal and telecommunication signal.
It should be noted that device embodiment described above is only schematical, wherein described be used as separating component
The unit of explanation may or may not be physically separate, can be as the component that unit is shown or can also
It is not physical location, you can with positioned at a place, or can also be distributed in multiple network unit.Can be according to reality
Need to select some or all of module therein to realize the purpose of this embodiment scheme.In addition, device provided by the invention
In embodiment attached drawing, the connection relation between module represents there is communication connection between them, specifically can be implemented as one or
A plurality of communication bus or signal wire.Those of ordinary skill in the art are without creative efforts, you can to understand
And implement.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of transmission method based on L2 cache, it is characterised in that comprise the following steps：
Receive the file request instruction that user sends；
The file for obtaining pre-request is instructed according to the file request；
When the file of the pre-request is the first class file, the text of the pre-request is transmitted to the user by relay station
Part；Wherein, first class file is that the request frequency being stored in all relay stations is higher than the popular file of frequency threshold；
When the file of the pre-request is the second class file, the relay station there are the pre-request file is obtained, and pass through institute
The relay station for stating the file there are pre-request transmits the file of the pre-request to user；Wherein, second class file is to deposit
Store up time popular file of the request frequency in the relay station of part less than frequency threshold.
2. the transmission method according to claim 1 based on L2 cache, it is characterised in that on each repeater, institute
State the first class file and be stored in the repeater caching less than in the space of optimal cache threshold.
3. the transmission method according to claim 1 based on L2 cache, it is characterised in that all repeaters are divided
For different cells；
Second class file be allocated corresponding cell and be stored in the cell each repeater caching be more than optimal caching
In the space of threshold value.
4. the transmission method according to claim 3 based on L2 cache, it is characterised in that described when the pre-request
When file is the second class file, the relay station there are the pre-request file is obtained, and pass through the file there are pre-request
Relay station the file of the pre-request is transmitted to user, be specially：
When the pre-request file is the second class file, all relay stations of the second class file affiliated subdistrict are obtained；
Detect to whether there is in the transmission queue of the relay station and whether deposited in the first class file waiting for transmission or request queue
Asking the request of the first class file；
If so, the first kind file request processing after the first class file end of transmission in queue to be transmitted or in request queue
After transmit the file of the pre-request；
If it is not, transmit the file of the pre-request；Wherein, the transmission success rate of second class file meets
5. the transmission method according to claim 1 based on L2 cache, it is characterised in that further include：
When the pre-request file is three class file, the pre-request file is obtained from source station and is transferred to user；Its
In, the 3rd class file is the file for being not stored in relay station.
6. the transmission method according to claim 4 based on L2 cache, it is characterised in that the optimal cache thresholdWherein, the K={ 1,2 ..., K } represents
The database for the K file that user will ask, and 0<α<1.
A kind of 7. transmitting device based on L2 cache, it is characterised in that including：
Request reception unit, for receiving the file request instruction of user's transmission；
File obtaining unit, the file for obtaining pre-request is instructed according to the file request；
First transmission unit, for when the file of the pre-request is the first class file, being passed by relay station to the user
The file of the defeated pre-request；Wherein, first class file is that the request frequency being stored in all relay stations is higher than frequency
The popular file of threshold value；
Second transmission unit, for when the file of the pre-request is the second class file, obtaining, there are the pre-request file
Relay station, and the file of the pre-request is transmitted by the relay station of the file there are pre-request to user；Wherein, institute
It is time popular file that the request frequency being stored in the relay station of part is less than frequency threshold to state the second class file.
8. the transmitting device according to claim 7 based on L2 cache, it is characterised in that on each repeater, institute
State the first class file and be stored in the repeater caching less than in the space of optimal cache threshold.
9. a kind of transmission terminal equipment based on L2 cache, including processor, memory and it is stored in the memory
And the computer program performed by the processor is configured as, the processor is realized as weighed when performing the computer program
Profit requires the transmission method based on L2 cache described in any one in 1 to 6.
10. a kind of computer-readable recording medium, it is characterised in that the computer-readable recording medium includes the calculating of storage
Machine program, wherein, equipment where controlling the computer-readable recording medium when the computer program is run is performed as weighed
Profit requires the transmission method based on L2 cache described in any one in 1 to 6.
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| CN201711172590.6A CN108011836A (en) | 2017-11-21 | 2017-11-21 | Transmission method, device, terminal device and storage medium based on L2 cache |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711172590.6A CN108011836A (en) | 2017-11-21 | 2017-11-21 | Transmission method, device, terminal device and storage medium based on L2 cache |
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| CN117135154A (en) * | 2023-09-28 | 2023-11-28 | 深圳英驰供应链管理有限公司 | Financial settlement file transmission method and system |
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| CN110896526A (en) * | 2019-12-04 | 2020-03-20 | 南方科技大学 | Cache resource scheduling method, device, server and storage medium |
| CN113504986A (en) * | 2021-06-30 | 2021-10-15 | 广州大学 | Cache-based edge computing system unloading method, device, equipment and medium |
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