WO2013097350A1

WO2013097350A1 - File sending and receiving method and device, and file transfer method and system

Info

Publication number: WO2013097350A1
Application number: PCT/CN2012/072173
Authority: WO
Inventors: 周琦; 杨小明; 范晓黎
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-12-26
Filing date: 2012-03-12
Publication date: 2013-07-04
Also published as: CN102412875A; CN102412875B

Abstract

Disclosed are file sending and receiving methods and devices, and a file transfer method and system. The file transfer method comprises: a sender determining a space value, the space value being the size of storage space occupied by a file to be transferred; the sender sending both the file to be transferred and the space value to a receiver; the receiver receiving the space value of the file to be transferred of the current Bluetooth transfer; and the receiver comparing the size of the local storage space with the space value, and according to a comparison result, determining whether to receive the file to be transferred. The present invention solves the problem of inconvenient use because, when a user receives a file by using Bluetooth, a terminal only prompts that the space is insufficient after a part of the file is received so as to result in the loss of the data that has already been transferred, thereby enhancing the user experience.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a file transmitting and receiving method and apparatus, and a file transmitting method and system. BACKGROUND OF THE INVENTION Bluetooth technology is a wireless communication technology for transmitting voice and data over short distances. A chip incorporating Bluetooth technology in most digital mobile devices can replace the cable between the traditional electronic devices, and the personal digital assistant (Personal Digital Assistant, Referred to as PDA), wireless transmission of information between laptops and mobile phones is possible. The Object Exchange Protocol (OBEX) is a simple and efficient high-level application protocol. With the wide application of mobile phones and various portable products, various devices can be realized through file transfer of OBEX protocol, such as personal computer (Personal Computer, PC for short), PDA, notebook, mobile terminal file sharing, The scope of application is quite extensive. In the hierarchical Bluetooth protocol stack, the OBEX protocol is an application-oriented session layer protocol. Figure 1 is a schematic diagram of the location of the OBEX in the Bluetooth protocol stack according to the related art. The application principle is shown in Figure 1, and the OBEX protocol runs on At the top of the Bluetooth protocol, support for file transfer, object "push" operation, synchronization and many other applications. The OBEX protocol provides a simple means of object exchange between devices. The exchangeable object can be a file, an image, or any data unit supported by the application. The object exchange uses a master/slave mode based on the query-response mode, and can be used between any two Bluetooth devices. The master-slave relationship is formed. The active originating method is the master device (Client), and the founder is the slave device (Server). The OBEX related processes include: Connection establishment (Connect), connection disconnection (Disconnect^ Sending files)

(Put), Receive File (Get), Operation Abandon (Abort) and Set Path (Set Path)

The object exchange involved in the OBEX protocol includes the exchange of files and directories. During the application process, the Client client can initialize various requests, such as sending and receiving files, and browsing the server object. Therefore, the Client client has the ability to interpret the format and size of the OBEX folder and its files; Server and Client clients Correspondingly, as a remote target device, it provides object exchange service and browsing function using OBEX folder format, server-side read-only folder and read-only file, which can restrict object issue and file/directory deletion and establishment. . At present, the Bluetooth function is used more frequently in people's daily use of mobile phones, PCs and other terminals, such as file transfer, answering calls, playing audio and video files. In order to share useful files and software, friends often use Bluetooth. The current Bluetooth transmission mode is to transfer the file first, and then prompt the user when the space is insufficient. Then the previously transmitted data is cleared. For example, the other party's storage space is 300M. In the case of unknown beforehand, a 400M file needs to be transmitted. The other party, when transmitting 300M of data, the other party will indicate that there is insufficient space, and then the previously transmitted data is cleared. When the user receives the file by using the Bluetooth in the related art, the terminal only indicates that the space is insufficient after receiving the partial file, thereby causing the lost data to be lost and the inconvenient use problem, and no effective solution has been proposed yet. SUMMARY OF THE INVENTION The present invention provides a file transmitting and receiving method and apparatus, and a file transmitting method and system, so as to at least solve the problem that when a user receives a file using Bluetooth in a related art, the terminal only indicates that the space is insufficient after receiving a partial file, and the use is not Convenient problem. According to an aspect of the present invention, a file sending method is provided, which is applied to a Bluetooth transmission, and includes: determining, by a sending end, a spatial value, where a space value is a size of a storage space occupied by a file to be transmitted; The spatial values are sent to the receiving end. Preferably, the sending end sends the spatial value to the receiving end, the sending end includes: the sending end encapsulates the spatial value into the OBXE Obj ect AddHeader data packet; and the sending end sends the OBXE_Obj ect AddHeader data packet to the receiving end. According to another aspect of the present invention, a file receiving method is provided, which is applied to a Bluetooth transmission, and includes: a receiving end receiving a space value of a file to be transmitted transmitted by the Bluetooth, wherein the space value is a storage space occupied by the file to be transmitted. The size of the local storage space and the space value are compared by the receiving end, and it is determined whether to receive the file to be transmitted according to the comparison result. Preferably, the receiving end determines whether to receive the file to be transmitted according to the comparison result, and the method includes: when the size of the local storage space is not less than the space value, the receiving end determines whether the size of the local unoccupied storage space is not less than a space value; If yes, the receiving end performs Bluetooth transmission to receive the file to be transmitted; if not, the receiving end deletes the file or application stored in the locally occupied storage space until the size of the unoccupied storage space is not less than the space value. Preferably, the receiving end deletes the file or the application stored in the locally occupied storage space, including: the receiving end prompts the user that there is not enough storage space for the current Bluetooth transmission; the receiving end receives the deletion instruction input by the user, where the deletion indication The file or application used to indicate the deletion; the receiving end deletes the file or application stored in the locally occupied storage space according to the deletion instruction. Preferably, the receiving end determines whether to receive the file to be transmitted according to the comparison result, and the method includes: when the size of the local storage space of the receiving end is smaller than the space value, the receiving end prompts the user that the current space cannot perform Bluetooth transmission of the file to be transmitted. Preferably, the receiving end determines the spatial value of the file to be transmitted that is currently transmitted by the Bluetooth, and includes: the receiving end receives the OBXE_ObjectAddHeader data packet encapsulating the spatial value; and the receiving end parses the OBXE_ObjectAddHeader data packet to obtain the spatial value. According to still another aspect of the present invention, a file transmission method is provided, which is applied to a Bluetooth transmission, and includes: a sending end determines a spatial value, where a space value is a size of a storage space occupied by a file to be transmitted; And the spatial value is sent to the receiving end; the receiving end receives the space value of the file to be transmitted transmitted by the Bluetooth; the receiving end compares the size and space value of the local storage space, and determines whether to receive the file to be transmitted according to the comparison result. According to an aspect of the present invention, a file sending apparatus is provided, which is applied to a Bluetooth transmission, and includes a determining module, configured to determine a spatial value, where a space value is a size of a storage space occupied by a file to be transmitted; a sending module is set to Send the file to be transferred and the space value to the receiving end. According to another aspect of the present invention, a file receiving apparatus is provided, which is applied to a Bluetooth transmission, and includes a receiving module, configured to receive a spatial value of a file to be transmitted transmitted by the Bluetooth, wherein the space value is occupied by a file to be transmitted. The size of the storage space; the comparison module, set to compare the size and space value of the local storage space, and determine whether to receive the file to be transmitted according to the comparison result. According to still another aspect of the present invention, a file transmission system is provided, which is applied to a Bluetooth transmission, including a transmitting end and a receiving end: the transmitting end is set to determine a spatial value, wherein the spatial value is a size of a storage space occupied by a file to be transmitted. Sending the file to be transmitted and the space value to the receiving end; the receiving end is set to determine the space value of the file to be transmitted transmitted by the Bluetooth, wherein the space value is the size of the storage space occupied by the file to be transmitted; The size and space value of the space, and whether or not to receive the file to be transmitted is determined according to the comparison result. According to the present invention, the transmitting end sends the file to be transmitted and the spatial value to the receiving end, and the receiving end receives the space value of the file to be transmitted transmitted by the Bluetooth, and obtains the size of the file to be transmitted, thereby comparing the size of the local storage space with The spatial value, the receiving end may determine whether to receive the file to be transmitted according to the comparison result. That is, the sender mentions Before informing the receiving end of the size of the file to be transmitted, the receiving end can know the size of the file to be transmitted before transmitting the file to be transmitted, and then can determine whether the local storage space is sufficient to support the Bluetooth transmission, and solve the problem that the user receives the file by using Bluetooth. At the same time, the terminal only indicates that the space is insufficient after receiving a part of the file, thereby causing the previously transmitted data to be lost, and the inconvenient use problem improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a position of an OBEX in a Bluetooth protocol stack according to the related art; FIG. 2 is a flowchart of a file transmitting method according to an embodiment of the present invention; FIG. 3 is a file receiving method according to an embodiment of the present invention; Figure 4 is a flow chart of a file transmission method according to an embodiment of the present invention; Figure 5 is a flow chart of a Bluetooth transmitting end according to an embodiment of the present invention; Figure 6 is a flow chart of a Bluetooth receiving end according to an embodiment of the present invention; 7 is a block diagram of a header: OBEX ObjectAddHeader packet according to an embodiment of the present invention; FIG. 8 is a flow chart of a OBEX protocol packet of a sender and a receiver according to an embodiment of the present invention; FIG. 9 is a file transmission according to an embodiment of the present invention. FIG. 10 is a block diagram showing the structure of a file receiving apparatus according to an embodiment of the present invention. FIG. 11 is a block diagram showing the structure of a file transfer system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. The present invention provides a file sending method. FIG. 2 is a flowchart of a file sending method according to an embodiment of the present invention. As shown in FIG. 2, the following steps S202 to S204 are included. Step S202, the sender determines a space value, where the space value is a size of a storage space occupied by the file to be transmitted. Step S204, the sending end sends the file to be transmitted and the spatial value to the receiving end. In the embodiment of the present invention, the sending end sends the file to be transmitted and the space value to the receiving end, that is, the sending end informs the receiving end of the size of the file to be transmitted in advance, and ensures that the receiving end can know the to-be-transmitted before transmitting the file to be transmitted. The size of the file, in turn, can determine whether the local storage space is sufficient to support this Bluetooth transmission. It can be seen that the embodiment of the present invention can solve the problem that when the user receives the file by using the Bluetooth, the terminal only indicates that the space is insufficient after receiving the partial file, thereby causing the previously transmitted data to be lost, and the use is inconvenient, thereby improving the user experience. The sending end may send a spatial value to the receiving end in multiple sending manners, for example, carrying a spatial value in a signaling or message that the transmitting end interacts with the receiving end, or may be in a data packet transmitted between the transmitting end and the receiving end. Encapsulating the spatial value, preferably, an OBXE_ObjectAddHeader (added object header file) packet may be used, that is, the sender encapsulates the spatial value into the OBXE_ObjectAddHeader packet, and then the sender sends the OBXE ObjectAddHeader packet to the receiving end, thereby Complete the transmission of the space value. The present invention also provides a file receiving method. FIG. 3 is a flowchart of a file receiving method according to an embodiment of the present invention. As shown in FIG. 3, the following steps S302 to S304 are included. Step S302: The receiving end receives the space value of the file to be transmitted transmitted by the Bluetooth, and the space value is the size of the storage space occupied by the file to be transmitted. Step S304, the receiving end compares the size and space value of the local storage space, and determines whether to receive the file to be transmitted according to the comparison result. In the embodiment of the present invention, the receiving end receives the space value of the file to be transmitted transmitted by the Bluetooth, and obtains the size of the file to be transmitted, and then compares the size and space value of the local storage space, and the receiving end may determine whether to receive according to the comparison result. The file to be transferred. That is, the receiving end can know the size of the file to be transmitted before transmitting the file to be transmitted, and can determine whether the local storage space is sufficient to support the Bluetooth transmission. It can be seen that the embodiment of the present invention can solve the problem that when the user receives the file by using the Bluetooth, the terminal only indicates that the space is insufficient after receiving the partial file, thereby causing the previously transmitted data to be lost, and the use is inconvenient, thereby improving the user experience. The receiving end determines whether to receive the file to be transmitted according to the comparison result in step S304. When the size of the local storage space on the receiving end is not less than the space value, the receiving end determines whether the size of the unoccupied storage space is not less than the space value; The receiving end performs Bluetooth transmission and receives the file to be transmitted. If the size of the unoccupied storage space is smaller than the space value, the receiving end needs to delete the file or application stored in the locally occupied storage space until the size of the unoccupied storage space is not less than the space value. The Bluetooth transmission method used in the related art, when the local storage space is insufficient, also mentions that the user needs to delete a part of the file and then re-transfer. Since there are many files stored, and the space occupied by each file is different, Therefore, the files that need to be deleted in order to satisfy the receiving of the other party's files need to be a difficult problem for the user. To solve the technical problem, the related technology provides a solution: After deleting a file, the user needs to check the memory space of the mobile phone. Then, compare the size of the files transmitted by the other party. If there is not enough space, delete other files, and the user will feel very inconvenient and waste time. Therefore, the embodiment of the present invention provides another solution, that is, the receiving end deletes the file or application stored in the locally occupied storage space, and after receiving the deletion, the receiving end automatically calculates the size of the unoccupied storage space until the The size of the occupied storage space is not less than the space value. At this time, the receiving end can perform Bluetooth transmission and receive the file to be transmitted without performing the deletion operation. In order to avoid deletion of useful files or applications, for example, deleting the system file may cause the receiving end to fail to perform normal operations. Therefore, the receiving end may prompt the user that there is not enough storage space for the Bluetooth transmission, according to the user input. The deletion indicates that the file or the application is deleted, and the receiving end receives the deletion indication input by the user, where the deletion indication is used to indicate the deleted file or the application, and the receiving end deletes the file or application stored in the locally occupied storage space according to the deletion instruction. In the application, if the size of the local storage space of the receiving end is smaller than the space value, the receiving end does not need to perform any operation, and directly prompts the user that the current space cannot transmit the Bluetooth transmission of the file to be transmitted. As mentioned above, the sending end may send a spatial value to the receiving end in multiple sending manners, for example, carrying a spatial value in a signaling or message that the transmitting end interacts with the receiving end, or may be between the transmitting end and the receiving end. The spatial value is encapsulated in the transmitted data packet. Preferably, the OBXE_ObjectAddHeader data packet may be used. Correspondingly, the receiving end may receive the OBXE_ObjectAddHeader data packet encapsulating the spatial value. Further, the receiving end parses the OBXE_ObjectAddHeader packet to obtain a space value. The embodiment of the present invention further provides a file transmission method. FIG. 4 is a flowchart of a file transmission method according to an embodiment of the present invention. As shown in FIG. 4, the following steps S402 to S408 are included. Step S402, the transmitting end determines a spatial value, where the space value is a size of a storage space occupied by the file to be transmitted. Step S404, the sending end sends the file to be transmitted and the space value to the receiving end. Step S406: The receiving end receives the spatial value of the file to be transmitted that is currently transmitted by the Bluetooth. Step S408, the receiving end compares the size and space value of the local storage space, and determines whether to receive the file to be transmitted according to the comparison result. In the embodiment of the present invention, the sending end sends the file to be transmitted and the spatial value to the receiving end, and the receiving end receives the space value of the file to be transmitted transmitted by the Bluetooth, and the size of the file to be transmitted is obtained, thereby comparing the local storage space. The size and space value, the receiving end can determine whether to receive the file to be transmitted according to the comparison result. That is, the sending end informs the receiving end of the size of the file to be transmitted in advance, and ensures that the receiving end can know the size of the file to be transmitted before transmitting the file to be transmitted, and then can determine whether the local storage space is sufficient to support the Bluetooth transmission. It can be seen that the embodiment of the present invention can solve the problem that when the user receives the file by using the Bluetooth, the terminal only indicates that the space is insufficient after receiving the partial file, thereby causing the previously transmitted data to be lost, and the use is inconvenient, thereby improving the user experience. The method, the device and the system provided by the embodiments of the present invention have achieved significant progress compared with the related technologies, and can determine whether the space satisfies the requirements before the file is received through the Bluetooth, and avoids the lack of space after receiving a piece of data. Waste, inconvenient problems. At the same time, in the case of insufficient space, the user can directly enter the file deletion or application uninstallation interface, and automatically determine whether the space meets the requirements after deleting the file, thereby exempting the user from manually calculating the space size. The implementation process of the embodiment of the present invention will be described in detail below with reference to examples. The process section includes the following steps:

1. The sender selects the file to send and gets the file size at the same time. 2. The sender sends the file size into the OBEX_ObjectAddHeader packet and sends it to the receiver.

3. After receiving the OBEX_ObjectAddHeader packet, the receiving end determines whether the capacity is sufficient to store the file to be received.

4. If the receiving end determines that the capacity is sufficient, the file data packet is received according to the OBEX protocol. If the receiving end determines that the capacity is insufficient, the user is prompted to delete part of the file to free up part of the space for file reception, and the user selects to clear the file and directly enters the file selection interface. To select the file to delete, when the space is sufficient, enter the file transfer process.

5. Close the underlying connection to release the resource. FIG. 5 is a flowchart of a Bluetooth transmitting end according to an embodiment of the present invention. As shown in FIG. 5, the sending end performs the following processing, including the following steps S501 to S509. Step S501, selecting a file to be sent. Step S502, obtaining a file size to be sent. Step S503, determining whether the Bluetooth is turned on, if yes, executing step S504; if not, executing step S505. Step S504, searching for the receiving end, pairing, and connecting. Step S505, turning on the Bluetooth. Step S506, calling the OBEX initialization interface: OBEX-Init. Step S507, adding a file size parameter to the header (header file) request packet format. Step S508, adding a Header to the queue to be sent. Step S509, sending a transmission request to the receiving end. FIG. 6 is a flowchart of a Bluetooth receiving end according to an embodiment of the present invention. As shown in FIG. 6, the receiving end performs the following steps S601 to S610. Step S601, receiving an OBEX_Obj ectAddHeader data packet. Step S602, parsing the OBEX_Obj ectAddHeader data packet to obtain a file size to be received. Step S603, searching for a configuration file to obtain a remaining storage space size value. Step S604, comparing the size of the transmission file and the remaining storage space. In step S605, it is judged whether the space is sufficient. If yes, go to step S606; if no, go to step S608. Step S606, receiving a file. In step S607, it is determined whether to clean up the space. If yes, go to step S608; if no, go to step S610. In step S608, the files that can be deleted are automatically arranged according to the file size, and the file size value and the required cleaned space value are displayed. Step S609, after deleting the file, the space is sufficient to receive the file. Step S610, ending the file transfer. According to the OBEX protocol shown in Figure 1, the following processing is performed:

1) Encapsulate the file size to be sent into the OBEX_ObjectAddHeader packet.

2) Process the file sending and receiving process. The process is shown in Figure 8. The location in the Bluetooth protocol stack is shown in Figure 1. 7 is a block diagram of an OBEX Obj ect AddHeader packet according to an embodiment of the present invention. As shown in FIG. 7, the OBEX_Obj ect AddHeader packet has the following functions.

1) Encapsulate the send file size parameter.

2) The receiving end parses the size of the file to be received.

3) Contains a response code for the receiver to feed back to the sender for file transfer. 8 is a flow chart of a OBEX protocol data packet of a transmitting end and a receiving end according to an embodiment of the present invention.

As an example, as shown in FIG. 8, the following steps S801 to S816 are included. Step S801, the OBEX initialization interface: OBEX_Init. Step S802, calling a Bluetooth transmission mode. Step S803, adding information such as the length of the transmission packet to the header: OBEX_ObjectAddHeader. Step S804, sending a header to the receiving end: OBEX Obj ect AddHeader Step S805, the receiving end parses the header data structure. Step S806, it is judged whether all the storage spaces (including the used space and the free space) of the terminal satisfy the requirement, and if yes, step S807 is performed; if no, step S813 is performed. In step S807, transmission is performed. In step S808, it is determined whether the transmission is finished. If yes, step S809 is performed; if not, step S810 is performed. Step S809, when the transmission ends, the underlying connection is released to release the resource: OBEX-Clrarup. In step S810, the data OBEX_Request is sent. Step S811, the processing server response: OBEX_Request. Step S812, calling an event processing function of the application layer. Step S813, whether the total storage space size of the terminal is satisfied. If yes, go to step S814; if no, go to step S816. In step S814, it is determined whether the user clears the storage space. If yes, step S815 is performed; if no, step S816 is performed. Step S815, clearing the space. In step S816, the entire transmission process is ended. It should be noted that the steps shown in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and, although the logical order is shown in the flowchart, in some cases, The steps shown or described may be performed in an order different than that herein. The embodiment of the invention provides a file sending device, which can be used to implement the above file sending method. FIG. 9 is a structural block diagram of a file transmitting apparatus including a determining module 92 and a transmitting module 94 according to an embodiment of the present invention. The determining module 92 is configured to determine a spatial value, where the space value is the size of the storage space occupied by the file to be transmitted; the sending module 94 is connected to the determining module 92, and is configured to send the file to be transmitted and the spatial value to the receiving end. The embodiment of the invention provides a file receiving device, which can be used to implement the above file receiving method. FIG. 10 is a structural block diagram of a file receiving apparatus including a receiving module 102 and a comparing module 104 according to an embodiment of the present invention. The receiving module 102 is configured to receive a space value of the file to be transmitted that is transmitted by the current Bluetooth, where the space value is the size of the storage space occupied by the file to be transmitted; the comparison module 104 is connected to the receiving module 102, and is set to compare the local storage. The size and space value of the space, and whether or not to receive the file to be transmitted is determined according to the comparison result. The embodiment of the invention provides a file transmission system, which can be used to implement the above file transmission method. 11 is a block diagram showing the structure of a file transmission system including a transmitting end 112 and a receiving end 114, in accordance with an embodiment of the present invention. The sending end 112 is configured to determine a space value, where the space value is the size of the storage space occupied by the file to be transmitted; the file to be transmitted and the space value are all sent to the receiving end 114; the receiving end 114 is set to determine the current Bluetooth transmission waiting The space value of the file to be transferred, where the space value is the size of the storage space occupied by the file to be transmitted; comparing the size and space value of the local storage space, determining whether to receive the file to be transmitted according to the comparison result. In summary, according to the above embodiments of the present invention, a file transmitting and receiving method and apparatus, and a file transmitting method and system are provided. According to the present invention, the transmitting end sends the file to be transmitted and the spatial value to the receiving end, and the receiving end receives the spatial value of the file to be transmitted transmitted by the Bluetooth, and knows the size of the file to be transmitted, and then compares The size and space value of the local storage space, and the receiving end can determine whether to receive the file to be transmitted according to the comparison result. That is, the sending end informs the receiving end of the size of the file to be transmitted in advance, and ensures that the receiving end can know the size of the file to be transmitted before transmitting the file to be transmitted, and then can determine whether the local storage space is sufficient to support the Bluetooth transmission, and solve the user. When receiving a file using Bluetooth, the terminal only indicates that the space is insufficient after receiving a part of the file, thereby causing the previously transmitted data to be lost, and the inconvenient use problem improves the user experience. It should be noted that the file sending apparatus, the file receiving apparatus, and the file transmission system described in the device embodiments correspond to the foregoing file sending, receiving, and transmitting method embodiments, and the specific implementation process has been detailed in the method embodiment. Description, no longer repeat here. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

1. A file sending method, applied to Bluetooth transmission, comprising:

The sending end determines a space value, where the space value is a size of a storage space occupied by the file to be transmitted;

The sending end sends the file to be transmitted and the space value to the receiving end.

The method according to claim 1, wherein the sending end sends the space value to the receiving end, including:

Transmitting, by the sending end, the space value into an object header file OBXE Obj ect AddHeader data packet added in the object exchange protocol;

The transmitting end sends the OBXE_ObjectAddHeader data packet to the receiving end.

3. A file receiving method, applied to Bluetooth transmission, comprising:

Receiving, by the receiving end, a space value of the file to be transmitted that is transmitted by the Bluetooth, wherein the space value is a size of a storage space occupied by the file to be transmitted;

The receiving end compares the size of the local storage space with the space value, and determines whether to receive the file to be transmitted according to the comparison result.

The method according to claim 3, wherein the receiving end determines whether to receive the file to be transmitted according to the comparison result, including:

When the size of the local storage space is not less than the space value, the receiving end determines whether the size of the local unoccupied storage space is not less than the space value;

If yes, the receiving end performs Bluetooth transmission, and receives the file to be transmitted;

If not, the receiving end deletes the file or application stored in the locally occupied storage space until the size of the unoccupied storage space is not less than the space value.

The method of claim 4, wherein the receiving end deletes a file or an application stored in a locally occupied storage space, including:

The receiving end prompts the user that there is not enough storage space for the current Bluetooth transmission; the receiving end receives the deletion indication input by the user, where the deletion indication is used to indicate the deleted file or application; And the receiving end deletes the file or application stored in the locally occupied storage space according to the deletion indication.

When the size of the local storage space of the receiving end is smaller than the space value, the receiving end prompts the user that the current space cannot perform Bluetooth transmission of the file to be transmitted.

The method according to any one of claims 3 to 6, wherein the receiving end determines the spatial value of the file to be transmitted that is currently transmitted by the Bluetooth, and includes:

The receiving end receives an OBXE_ObjectAddHeader data packet encapsulating the spatial value; the receiving end parses the OBXE_ObjectAddHeader data packet to obtain the spatial value.

8. A file transfer method for Bluetooth transmission, including:

The sending end sends the file to be transmitted and the space value to the receiving end; the receiving end receives the spatial value of the file to be transmitted transmitted by the Bluetooth.

9. A file transmitting device for Bluetooth transmission, comprising:

Determining a module, configured to determine a spatial value, where the space value is a size of a storage space occupied by a file to be transmitted;

And a sending module, configured to send the file to be transmitted and the space value to the receiving end.

10. A file receiving device for use in Bluetooth transmission, comprising:

a receiving module, configured to receive a space value of the to-be-transmitted file of the Bluetooth transmission, where the space value is a size of a storage space occupied by the file to be transmitted;

The comparison module is configured to compare the size of the local storage space with the space value, and determine whether to receive the file to be transmitted according to the comparison result.

11. A file transfer system for Bluetooth transmission, including sender and receiver: The sending end is configured to determine a spatial value, where the space value is a size of a storage space occupied by the file to be transmitted; and the file to be transmitted and the space value are both sent to the receiving end; Set to determine a spatial value of the file to be transmitted that is transmitted by the Bluetooth, wherein the space value is a size of a storage space occupied by the file to be transmitted; comparing a size of the local storage space with the space value, according to the comparison result Determining whether to receive the file to be transmitted.