WO2024032450A1 - Procédé de communication et module de communication - Google Patents

Procédé de communication et module de communication Download PDF

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Publication number
WO2024032450A1
WO2024032450A1 PCT/CN2023/110890 CN2023110890W WO2024032450A1 WO 2024032450 A1 WO2024032450 A1 WO 2024032450A1 CN 2023110890 W CN2023110890 W CN 2023110890W WO 2024032450 A1 WO2024032450 A1 WO 2024032450A1
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WIPO (PCT)
Prior art keywords
side device
application
address
core network
application side
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PCT/CN2023/110890
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English (en)
Chinese (zh)
Inventor
郭章
Original Assignee
西安广和通无线通信有限公司
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Publication of WO2024032450A1 publication Critical patent/WO2024032450A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • 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
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources

Definitions

  • the present application relates to the field of computers, and in particular, to a communication method and communication module.
  • the Internet of Things can connect multiple physical devices to the Internet to collect and share data.
  • a communication module modem can connect to one or more external devices.
  • the APN corresponding to the first external device connected to the modem and the server that the second external device needs to access are consistent, and the first external device has been connected to the Internet through the first APN, if the second external device is If a networking request is initiated to the core network through the second APN, networking failure will occur.
  • the modem cannot meet the network needs of multiple external devices at the same time, and communication efficiency needs to be improved.
  • this application provides a communication method, applied to a communication module.
  • the communication module is connected to at least a first application side device and a second application side device.
  • the method includes: receiving the first application side device.
  • the device sends the first activation request through the first APN, and forwards the first activation request to the core network; receives the first IP address fed back by the core network in response to the first activation request, and forwards the first IP address to the first activation request.
  • the application-side device forwards the first IP address; receives a second activation request sent by the second application-side device through the first APN; responds to the second activation request, feeds back to the second application-side device The first IP address.
  • the APNs corresponding to the server that the first application-side device connected to the modem and the second application-side device need to access are consistent, they are both the above-mentioned first APN, and the first external device has been
  • the PDN link resource that is, the first IP address is obtained based on the first APN
  • the modem does not forward the request to the core network after receiving the second activation request initiated by the second application-side device based on the first APN.
  • This second activation request directly feeds back the above-mentioned first IP address to the second application-side device, so that the first application-side device and the second application-side device can share the same first IP address, thereby realizing the first
  • the application-side device and the second application-side device communicate with the core network at the same time based on the same modem and the first IP address, which can meet the communication needs of multiple application-side devices to be networked simultaneously through the same modem and the same apn, improving communication efficiency.
  • the method before feedbacking the first IP address to the second application-side device in response to the second activation request, the method further includes: determining the second activation request. whether the request carries the first APN; and responding to the second activation request, feeding back the first IP address to the second application side device includes: determining whether the second activation request carries the In the case of the first APN, in response to the second activation request, the first IP address is fed back to the second application side device.
  • the feedback of the first IP address to the second application-side device in response to the second activation request includes: establishing a second dial-up call regarding the second activation request. Entity, the second dialing entity is used to maintain the parameter information of the communication link involved in the communication between the second application side device and the core network through the communication module; send to the second application side device The first IP address and indication information indicating successful link establishment.
  • the method further includes: receiving the first uplink data sent by the first application side device and the second uplink data sent by the second application side device, and converting the first uplink data sent by the second application side device.
  • An uplink data and the second uplink data are forwarded to the core network; the first uplink data carries a first data feature, and the second uplink data carries a second data feature; and the downlink data sent by the core network is received.
  • the downlink data carries a third data feature; if the third data feature matches the first data feature, the downlink data is sent to the first application side device, if the third data feature matches If the second data feature matches, the downlink data is sent to the second application side device.
  • the modem when the modem receives the downlink data sent by the core network, it can complete the data distribution according to the data characteristics, providing guarantee for IP address resource sharing at the accuracy level of network communication.
  • the method further includes: after receiving the first deactivation request sent by the first application side device, determining whether the second application side device needs to continue to use the first IP address based on the first deactivation request. address to communicate with the core network; if yes, only dismantle the communication link between the first application side device and the communication module; if not, dismantle the first application side device and the communication links between communication modules, forward the first deactivation request to the core network, and remove the communication link between the communication module and the core network.
  • the modem can send a deactivation request regarding the first IP address to the core network. If it is determined that the second processor needs to continue communicating with the core network based on the first IP address, it indicates that the first application-side device is not the last one of the two or more application-side devices connected to the modem to initiate deactivation.
  • the requested application-side device among the multiple application-side devices connected to the modem, in addition to the above-mentioned first application-side device, there are still application-side devices (second application-side devices) that need to use the above-mentioned first IP address, the modem does not send a deactivation request for the first IP address to the core network, but only dismantles the communication link between the first application-side device and the communication module, thereby avoiding the situation where the second processor cannot continue.
  • the problem of communicating with the core network through the first IP address improves the stability of IP resource sharing.
  • the first data characteristic includes a first source MAC address and a first destination MAC address
  • the second data characteristic includes a second source MAC address and a second destination MAC address
  • the third data characteristic includes a second source MAC address and a second destination MAC address.
  • the three data characteristics include a third source MAC address and a third target MAC address, and if the third data characteristics match the first data characteristics, the downlink data is sent to the first application side device, Including: when it is determined that the third destination MAC address is consistent with the first source MAC address, and the third source MAC address is consistent with the first destination MAC address, sending the downlink data to the The first application side device; if the third data feature matches the second data feature, sending the downlink data to the second application side device includes: determining the third destination If the MAC address is consistent with the second source MAC address, and the third source MAC address is consistent with the second destination MAC address, the downlink data is sent to the second application side device.
  • the method further includes: after receiving a second deactivation request from the second application-side device for the first IP address, determining whether the first processor needs to continue Based on the first IP communicate with the core network based on the first IP address; when it is determined that the first processor needs to continue communicating with the core network based on the first IP address, do not send a message to the core network.
  • the second deactivation request is sent to the core network, and the communication link between the second application side device and the communication module is removed.
  • the removal of the communication link between the first application side device and the communication module includes: deleting the first dialing entity; the first dialing entity is used to maintain the The first application side device communicates with the core network through the communication module and the parameter information of the communication link involved; the request result of sending the first deactivation request to the first application side device is deactivation. Successful return result.
  • determining whether the second application side device needs to continue communicating with the core network based on the first IP address includes: determining whether there is a connection with the second application side device.
  • the second dialing entity corresponding to the side device; the second dialing entity is created by the communication module to maintain the communication involved in the communication between the second application side device and the core network through the communication module.
  • the dialing entity of the parameter information of the link if yes, it is determined that the second application side device still needs to continue to communicate with the core network based on the first IP address; if not, it is determined that the second The application-side device no longer needs to continue communicating with the core network based on the first IP address.
  • this application provides a communication module.
  • the communication module is connected to at least a first application side device and a second application side device.
  • the communication module includes: a first receiving unit for receiving the The first application side device sends the first activation request through the first access point name APN, and forwards the first activation request to the core network; the second receiving unit is used to receive the core network's response to the first activation request.
  • Activate the first Internet Protocol IP address requesting feedback, and forward the first IP address to the first application side device;
  • the first receiving unit is also configured to receive the second application side device through a second activation request sent by the first APN; a response unit configured to feed back the first IP address to the second application-side device in response to the second activation request.
  • the present application provides an electronic device, including: a memory and a processor, wherein the memory stores program instructions; when the program instructions are executed by the processor, the processor is caused to execute the steps of the first aspect and the first aspect.
  • embodiments of the present application provide a chip system, which is applied to an electronic device.
  • the chip system includes one or more processors, and the processor is used to call computer instructions to cause the electronic device to execute the first aspect. or the method shown in any possible implementation of the first aspect.
  • the present application provides a computer-readable storage medium that stores a computer program; when the computer program is run on one or more processors, it causes the electronic device to execute the first step aspect and the method described in any possible implementation manner in the first aspect.
  • the present application provides a computer program product containing instructions.
  • the computer program product When the computer program product is run on an electronic device, the electronic device causes the electronic device to execute as described in the first aspect and any possible implementation manner of the first aspect. method.
  • the communication module provided by the second aspect, the electronic device provided by the third aspect, the chip system provided by the fourth aspect, the computer storage medium provided by the fifth aspect and the computer program product provided by the sixth aspect are all used for Execute the method shown in the first aspect or any implementation of the first aspect of the embodiment of this application. Therefore, what it can achieve For beneficial effects, please refer to the beneficial effects in the corresponding method, which will not be described again here.
  • Figure 1A is a schematic diagram of the application environment of a communication method provided by an embodiment of the present application.
  • Figure 1B is a schematic diagram of internal data distribution between a modem and AP1 and AP2 provided by the embodiment of the present application;
  • Figure 2 is a schematic flow chart of a communication method provided by an embodiment of the present application.
  • Figure 3 is a schematic flow chart of another communication method provided by an embodiment of the present application.
  • Figure 4 is a schematic flow chart of another communication method provided by an embodiment of the present application.
  • Figure 5 is a schematic flow chart of another communication method provided by an embodiment of the present application.
  • Figure 6 is a schematic structural diagram of a communication module provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of another communication module provided by an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of another communication module provided by an embodiment of the present application.
  • At least one (item) means one or more
  • plural means two or more
  • at least two (items) means two or three and three
  • “and/or” is used to describe the relationship between associated objects, indicating that there can be three relationships.
  • a and/or B can mean: only A exists, only B exists, and A and B exist simultaneously. In this case, A and B can be singular or plural.
  • the character “/” generally indicates that the related objects are in an "or” relationship.
  • At least one of the following” or similar expressions refers to any combination of these items.
  • at least one of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c" ".
  • the embodiment of the present application provides a data communication method.
  • some knowledge related to the data communication of the present solution is first introduced below.
  • an IP address corresponds to a PDN communication link one-to-one
  • the communication link refers to the communication link between the communication module (modem), the base station, and the core network pointed to by the IP address.
  • the client software in the electronic device wants to access the server through the Internet, it needs to first use the access point name (APN) corresponding to the server to initiate data service dialing to the core network through the modem.
  • APN access point name
  • the modem requests the core network through the base station to activate the communication link corresponding to the APN between the modem, the base station and the core network; after receiving the request, the core network allocates an IP address to the modem. After the modem receives the IP address, it Should The IP address is fed back to the client software, so that the client software can communicate with the server based on the IP address, the modem, the base station and the core network.
  • a communication module can use one APN for data service dialing at the same time, and establish a data link corresponding to the APN with the base station.
  • Two different modems can use the same APN for data service dialing at the same time, and establish data links corresponding to the APN with the base station respectively.
  • a modem cannot use the same APN to establish more than two data links with the base station at the same time.
  • the core network will refuse to establish a second data link with the modem through the APN (that is, the core network will refuse to establish a second data link through the APN again).
  • the modem is assigned another IP address).
  • the application environment diagram includes a core network, a base station, a communication module (modem), and two or more application-side devices connected to the modem.
  • the base station plays a transparent transmission role in the communication between the modem and the core network.
  • one application-side device among the two or more application-side devices is called a first application-side device (hereinafter referred to as AP1), and other application-side devices except the first application-side device are called Any application-side device among the side devices is called a second application-side device (hereinafter referred to as AP2).
  • AP1 first application-side device
  • AP2 second application-side device
  • one or more APNs are recorded in the application-side device or modem, and one APN can be used to proxy the access points of one or more servers.
  • APN can be used to proxy the access points of one or more servers.
  • their access point names can be the same access point name.
  • AP1 can use the first access point name (hereinafter referred to as apn1) to initiate data service dialing to the modem.
  • apn1 the first access point name
  • the modem After receiving the data service dialing, the modem forwards the data service dialing to the core network and receives the data service dialing.
  • the core network allocates the first IP address to AP1 in response to the data service dialing request corresponding to AP1.
  • the modem detects that AP2 also dials data services through apn1, it does not forward the data service dialing initiated by AP2 to the core network, but directly feeds back the above-mentioned first IP address to AP2, so that AP1 and AP2 can use the first IP address at the same time.
  • the IP address communicates with the base station or core network.
  • the modem is a communication module in a vehicle-mounted device, where AP1 is an application-side device in the application layer of the vehicle-mounted device; the vehicle-mounted device is also connected to an external device (such as a mobile phone) through USB, and the AP2 is The application side device of the application layer in this phone.
  • AP1 on the vehicle device needs to access the server 1 of the vehicle device for FOTA upgrade.
  • AP2 of the external device needs to access server 2 to check the vehicle information, and the access of server 1 and server 2
  • the point name apn1 is consistent. That is, the servers represented by apn1 include server 1 and server 2. If the client (application side device) needs to access server 1 or server 2, it needs to request link resources corresponding to the IP address from the core network based on apn1. For example, AP1 requests link resources for accessing server 1 from the core network based on the apn1 and modem, and obtains the data link resources of the first IP address allocated by the core network.
  • AP2 After AP1 obtains the above-mentioned first IP address based on apn1, AP2 requests link resources for accessing server 2 from the core network based on apn1 and the modem. Since AP2 performs data dialing through the same modem as AP1 and the same apn1 as AP1, then After the core network receives the data dialing request initiated by AP2 based on the modem and apn2, it will generally reject the data link resource request initiated by the modem on apn1 on the grounds that apn1 has established link resources, and only AP1 will be deactivated.
  • the core network After obtaining the above-mentioned first IP address, the core network will re-allocate a new IP address corresponding to the apn1 to AP2 based on the above-mentioned apn1.
  • AP1 and AP2 connected to the same modem cannot be connected to the Internet at the same time to perform corresponding communication tasks in some scenarios, and the communication efficiency needs to be improved.
  • the above-mentioned server 1 and server 2 may be the same or different servers, and this article does not limit this.
  • the modem of the vehicle-mounted device when the modem of the vehicle-mounted device receives AP2's activation request for data link resources from the core network using the above apn1, the modem directly feeds back the above first IP address to AP2 and no longer sends it to AP2.
  • the core network sends the activation request.
  • AP1 and AP2 use the same first IP address to access the Internet to access the corresponding server, and the modem distinguishes whether the session between the first IP address and the base station belongs to the session between AP1 and the base station or the session between AP2 and the base station. .
  • the modem is responsible for managing the sending tasks of uplink data, recording the incoming packet characteristics of uplink data, the receiving tasks of downlink data, and, based on the incoming packet characteristics of downlink data and the uplink data.
  • the incoming packet characteristics of the data distribute the downlink data to the corresponding application-side device.
  • the incoming packet characteristics refer to the data packet characteristics, and the incoming packet characteristics are used to identify a session.
  • the modem is also responsible for determining not to send the data link activation request initiated by the second application-side device to the core network to the core network based on the first IP address, but directly feedback the request to the second application-side device. First IP address.
  • the above modem is responsible for managing the sending task of uplink data, that is, the sending task of the modem sending data packets to the base station; specifically, after the modem receives the data packet from the application side device that is expected to be sent to the core network, the modem sends the data packet to the core network.
  • the above-mentioned downlink data reception task is also the reception task of the data packet sent by the base station to the modem; specifically, it is the reception task of the data packet that the core network expects to send to the application side device through the base station and modem, that is, the downlink data can be understood as the core The data packet sent by the network to the application side device.
  • AP1 after AP1 obtains the above-mentioned first IP address, it can bind the network card of AP1 to the first IP address; after AP2 receives the first IP address fed back by the modem, it can bind the network card of AP2 to the first IP address. . Then, AP1 or AP2 can send uplink data to the modem based on their respective network cards and the first IP address, and the modem then forwards the uplink data to the core network.
  • the internal data distribution task between the modem and AP1 and AP2 is shown in Figure 1B.
  • the modem receives the uplink data sent by AP1 or AP2 through the corresponding network card, it can be recorded through the share management module (share manage).
  • the data characteristics of the uplink data are then sent to the core network.
  • the data characteristics may be data characteristics used to identify a session.
  • the data characteristics may be five-tuple or six-tuple.
  • the modem receives the downlink data sent by the core network, the data characteristics of the uplink data recorded by share management are judged to match the data characteristics of the downlink data sent by AP1 and AP2.
  • the modem will forward the downlink data to AP1; if the data characteristics of the downlink data match the data characteristics of the uplink data sent by AP2, the modem will forward the downlink data to AP1.
  • the downlink data is forwarded to AP2, thus completing into the distribution of downlink data packets.
  • the communication method is applied to a communication module, and the communication module is specifically a modem (hereinafter referred to as modem).
  • the method includes:
  • the communication module receives the first activation request sent by the first application-side device through the first APN, and forwards the first activation request to the core network.
  • the communication module is connected to at least a first application side device and a second application side device.
  • the communication link between the modem and the first application-side device is established through the following steps: the modem sends the modem's network card information to the first application-side device through a message mechanism (hereinafter, for the convenience of description, the modem's network card is called the third network card ); after receiving the information of the third network card, the first application-side device establishes the third network card and the network card of the first application-side device through routing configuration (hereinafter, for the convenience of description, the network card of the first application-side device is called the third network card).
  • the communication link between the first application side device and the modem is successfully established, and the relationship between the first application side device and the modem Data communication can be carried out through the first network card and the third network card.
  • the modem can perform communication interaction regarding the first activation request through the link resources between the first network card and the third network card.
  • the communication connection method between the first application side device and the modem can be a wired connection or a wireless communication connection, which is not limited herein.
  • the above-mentioned first activation request can also be understood as a data service dialing request, a data link activation request or a packet data network (packet data network, PDN) link activation request sent by the first application side device to the modem.
  • the first activation request is specifically used to request the core network to allocate PDN data link resources to the first application side device and establish a signaling connection with the core network.
  • the above-mentioned first activation request carries the above-mentioned first APN.
  • the first APN may also be called a first access point name.
  • the first application-side device may generate the above-mentioned first activation request according to the preset PDN context information.
  • the first activation request may also carry other information, such as the first activation request.
  • the request can also carry information such as IP type, which is not limited in this article.
  • the modem can establish (can also be understood as creating) a first dial-up entity corresponding to the first activation request.
  • the first dial-up entity can be understood as a class object in the program code.
  • the first dial-up entity is used to maintain the parameter information of the communication link involved in the communication between the first application-side device and the core network through the modem, or it can also be understood that the first dial-up entity is used to maintain the bearer of the first application-side device.
  • the first dial-up entity may be used to encapsulate and transport data packets from the first application-side device according to the communication protocol so that the modem can send the data packets to the core network through the network.
  • the communication module receives the first IP address fed back by the core network in response to the first activation request, and forwards the first IP address to the first application side device.
  • the modem and the first application-side device can communicate between the first application-side device and the core network based on the first IP address.
  • the above-mentioned first IP address may also be called a first Internet Protocol address.
  • the first IP address is the core network’s target The PDN link resources fed back by the first activation request.
  • the modem After the modem receives the first IP address, it can establish an association between the first IP address and the modem's network card (the third network card), which indicates that the modem can use the first IP address and the core network based on the third network card. communication.
  • the PDP_ACT_REQ message in the first activation request carries the first APN.
  • the activation reply message PDP_ACT_CNF carries Indication information indicating successful link activation (for example, OK) and the above-mentioned first IP address (for example, x.x.x.x).
  • the modem After receiving the activation reply message PDP_ACT_CNF, the modem sends the activation reply message PDP_ACT_CNF to the first application-side device; the first application-side device parses the activation reply message PDP_ACT_CNF to obtain the above-mentioned first IP address and link activation success indication information. .
  • the first application-side device After the first application-side device obtains the above-mentioned first IP address, it can establish an association between the first IP address and the network card (first network card) of the first application-side device, so that when the first application-side device When it is necessary to access the server corresponding to the first IP address, the communication data can be sent to the modem through the first network card and the first IP address, and then sent by the modem to the core network, so that the first application-side device communicates with the core communication between networks.
  • the network card first network card
  • the communication module receives the second activation request sent by the second application-side device through the first APN.
  • the above-mentioned second activation request can also be understood as a data service dialing request, a data link activation request or a PDN link activation request sent by the second application side device to the modem.
  • the second activation request is specifically used for Request the core network to allocate PDN data link resources to the second application side device and establish a signaling connection with the core network.
  • the above-mentioned second activation request carries the above-mentioned first APN.
  • the second application-side device may generate the above-mentioned second activation request according to the preset PDN context information.
  • the second activation request may also carry other information, such as the second activation request.
  • the request can also carry information such as IP type, which is not limited in this article.
  • the modem after the modem receives the second activation request and determines that the apn carried in the second activation request is consistent with the first APN, it establishes a second dialing entity corresponding to the second activation request.
  • the second dial-up entity is used to maintain the parameter information of the communication link involved in the communication between the second application-side device and the core network through the modem, or it can also be understood that the second dial-up entity is used to maintain the bearer of the second application-side device.
  • the second dial-up entity may be used to encapsulate and transport data packets from the first application side device according to the communication protocol so that the modem can send the data packets to the core network through the network.
  • the communication module responds to the second activation request and feeds back the first IP address to the second application side device.
  • the modem and the second application-side device can communicate between the second application-side device and the core network based on the first IP address.
  • the modem after receiving the second activation request, the modem does not send the second activation request to the core network, but directly feeds back the first IP address to the second application side device.
  • the PDP_ACT_REQ message in the second activation request carries the first APN.
  • the activation The reply message PDP_ACT_CNF carries indication information of successful link activation (for example, OK) and the above-mentioned first IP address (for example, x.x.x.x).
  • the second application-side device can establish the first IP address and the network card of the second application-side device (hereinafter, for convenience of description, the network card of the second application-side device is referred to as the second IP address).
  • the network card of the second application-side device is referred to as the second IP address.
  • network card so that when the second application-side device needs to access the server corresponding to the first IP address, the communication data can be sent to the modem through the second network card and the first IP address, and the The modem is sent to the core network for communication between the second application side device and the core network.
  • the modem intercepts the second activation request after receiving the second activation request initiated by the second application-side device based on the first APN. request, the second activation request is not forwarded to the core network, but the first IP address is directly fed back to the second application side device, so that the first application side device and the second application side device can share the same first IP address.
  • the first application side device and the second application side device can communicate with the core network at the same time based on the same modem and the first IP address, which can meet the requirements of multiple application side devices using the same modem and the same apn at the same time.
  • Network communication needs and improve communication efficiency.
  • the method before feedbacking the first IP address to the second application-side device in response to the second activation request, the method further includes: determining the second activation request. whether the request carries the first APN; and responding to the second activation request, feeding back the first IP address to the second application side device includes: determining whether the second activation request carries the In the case of the first APN, in response to the second activation request, the first IP address is fed back to the second application side device.
  • the modem after receiving the second activation request sent by the second application-side device, the modem first determines whether the APN carried in the second activation request is consistent with the above-mentioned first APN. If it is consistent, the modem does not use the second activation request.
  • the activation request is sent to the core network, but directly feeds back the first IP address corresponding to the first APN to the second application side device.
  • the communication module in response to the second activation request, feeds back the above-mentioned first IP address to the second application side device, including: establishing a second dialing entity related to the second activation request, The second dialing entity is used to maintain the parameter information of the communication link involved in the communication between the second application side device and the core network through the communication module; and send the said second application side device to the second application side device.
  • the first IP address and indication information indicating successful link establishment.
  • the response result of the modem to the second activation request includes: establishing the above-mentioned second dialing entity, and sending the first IP address and indication information indicating that the link is established successfully to the second application-side device.
  • the modem, application-side device and core network perform the following operations in the order of numbers shown in Figure 3:
  • the first application side device uses apn1 for data service dialing, and carries apn1 to the modem by passing parameters through the PDP_ACT_REQ message (first activation request).
  • the first dial-up entity is used to maintain the parameter information of the communication link involved in the communication between the first application-side device and the core network through the communication module.
  • the first dial-up entity is used to transfer data from the first application to the core network according to the communication protocol.
  • the data packets are encapsulated and transported by the side device so that the modem can send the data packets through the network to the base station.
  • the PDP_ACT_CNF message carries the activation result OK and the first IP address ( For example, x.x.x.x, the address described by x.x.x.x in this article is the same IP address).
  • Send the PDP_ACT_REQ (apn apn1) message initiated by AP2.
  • AP1 and AP2 can share the same IP address and communicate with the core network at the same time, thereby meeting the communication requirements of multiple devices accessing the server through the same communication module at the same time and improving communication efficiency.
  • the described AP1 and AP2 can share the same IP address and communicate with the core network at the same time, which means that AP1 uses the first IP address to communicate with the core network based on the same modem, and AP2 uses the same modem to communicate with the core network.
  • the first IP address communicates with the core network.
  • the communication between the two does not interfere with each other and can be carried out at the same time. However, it does not mean that the communication between AP1 and the core network and the communication between AP2 and the core network must be at the same time. This article There is no restriction on this.
  • the first uplink data sent by the first application side device and the second uplink data sent by the second application side device are received, and the first uplink data and the The second uplink data is forwarded to the core network; the first uplink data carries first data characteristics, and the second uplink data carries second data characteristics; the downlink data sent by the core network is received, and the downlink data carries Third data feature; if the third data feature matches the first data feature, then send the downlink data to the first application side device, if the third data feature matches the second data If the characteristics match, the downlink data is sent to the second application side device.
  • the first data characteristic includes a first source MAC address and a first destination MAC address
  • the second data characteristic includes a second source MAC address and a second destination MAC address
  • the third data characteristic includes a second source MAC address and a second destination MAC address.
  • the third data feature includes a third source MAC address and a third target MAC address, and if the third data feature is the same as the first data feature, If there is a match, sending the downlink data to the first application side device includes: determining that the third destination MAC address is consistent with the first source MAC address, and the third source MAC address is consistent with the first source MAC address.
  • the downlink data is sent to the first application side device; if the third data feature matches the second data feature, the downlink data is sent to the first application side device. Sent to the second application-side device, including: when it is determined that the third destination MAC address is consistent with the second source MAC address, and the third source MAC address is consistent with the second destination MAC address. Next, send the downlink data to the second application side device.
  • the first source MAC address and the first destination MAC address are included in the first six-tuple, and the second source MAC address and the second destination MAC address are included in the second six-tuple.
  • the third source MAC address and the first destination MAC address are included in a third six-tuple.
  • the modem receives the first uplink data and the second uplink data, forwards the first uplink data and the second uplink data to the core network, and receives the third uplink data sent by the core network, and Determining to send the third uplink data to one of the first application side device or the second application side device based on the data characteristics includes:
  • S401 Receive the first uplink data sent by the first application side device.
  • the first application side device sends the first uplink data to the modem.
  • the first data characteristics carried by the above-mentioned first uplink data include: a first source MAC address and a first destination MAC address, where the first source MAC address is the physical address of the network card of the first application-side device, and the first destination MAC address It is the physical address of the server that the first application-side device needs to access through the modem.
  • the above-mentioned first uplink data carries the first six-tuple, which can also be understood as the above-mentioned first data feature is the first six-tuple, and the first six-tuple includes the above-mentioned first source MAC address and the first six-tuple. A destination MAC address. It is understandable that the six-tuple may also include other information. For example, the six-tuple may also include: one or more of the source IP address, destination IP address, source port number, and destination port number. This article does not cover this. Make limitations. It can be understood that in this application, the first application side device and the second application side device use the same IP address. If the first six-tuple includes the source IP address, then the source IP address of the first six-tuple is the first IP address mentioned above.
  • S402 Send the first uplink data to the core network, and accordingly, the core network receives the first uplink data.
  • S403 Receive the second uplink data sent by the second application side device, and accordingly, the second application side device sends the second uplink data to the modem.
  • the second data characteristics carried by the above-mentioned second uplink data include: a second source MAC address and a second destination MAC address, where the second source MAC address is the physical address of the network card of the second application-side device, and the second destination MAC address The physical address of the server that the second application-side device needs to access through the modem.
  • the second uplink data carries a second six-tuple, and it can also be understood that the second data feature is the second six-tuple.
  • the second six-tuple includes the above-mentioned second source MAC address and the second Destination MAC address. It is understandable that the six-tuple may also include other information.
  • the six-tuple may also include: one or more of the source IP address, destination IP address, source port number, and destination port number. This article does not cover this. Make limitations. It can be understood that in this article, the first application side device and the second application side device use the same IP address. If the second six-tuple includes the source IP address, the source IP address of the second six-tuple is the above-mentioned first IP address.
  • S404 Send the second uplink data to the core network, and accordingly, the core network receives the second uplink data.
  • S405 Receive downlink data sent by the core network, and accordingly, the core network sends the downlink data to the modem.
  • the third characteristic data carried in the above-mentioned downlink data includes: a third source MAC address and a third destination MAC address, where the third source MAC address is the physical address of the server that expects to send the downlink data to the application-side device through the core network,
  • the third target MAC address is the MAC address of the application-side device that the core network desires to communicate with.
  • the above downlink data carries a third six-tuple
  • the third six-tuple includes the above-mentioned third source MAC address and the third destination MAC address.
  • S406 Determine one of the first data features and the second data feature that matches the third data feature in the uplink data.
  • the third destination MAC address is consistent with the first source MAC address
  • the third source MAC address is consistent with the first destination MAC address
  • the modem determines that the above-mentioned third destination MAC address is consistent with the above-mentioned second source MAC address, and the above-mentioned third source MAC address is consistent with the above-mentioned second destination MAC address, it means that the second uplink data and the above-mentioned downlink data belong to messages in the same conversation. Then the modem uses the downlink data as the downlink data of the second uplink data, and sends the downlink data to the second application side device.
  • step S402 must be executed after the above-mentioned S401, and S404 must be executed after S403. Based on this, the order of the steps from S401 to S404 in Figure 4 is only an example, and it can also be other orders. This article discusses This is not limited.
  • the execution order between steps S401 to S404 can be: S403, S404, S401, S402; it can also be: S403, S401, S404, S402; it can also be S401, S403, S404, S402; as long as it satisfies
  • Other step combinations under the condition that step S402 is executed after the above-mentioned S401 and S404 is executed after S403 are feasible, and this article does not limit this.
  • the above-mentioned data characteristics may also be other identifiers other than MAC used to identify a pair of conversations, which is not limited in this article.
  • the above-mentioned data characteristics may also be port numbers.
  • whether the uplink data and downlink data belong to the same session can be identified by the port number.
  • the above-mentioned first characteristic data includes a first source port number and a first destination port number
  • the above-mentioned second characteristic data includes a second source port number and a second destination port number
  • the above-mentioned third characteristic data Including the third source port number and the third destination port number.
  • sending the downlink data to the first application side device includes: determining the third destination port number and the first source If the port numbers are consistent and the third source port number is consistent with the first destination port number, the downlink data is sent to the first application side device.
  • sending the downlink data to the second application side device includes: determining the third destination port number and the second source The port numbers are consistent and the third If the source port number is consistent with the second destination port number, the downlink data is sent to the second application side device.
  • the first data feature is a first six-tuple, and the first six-tuple includes a first source port number and a first destination port number.
  • the second data feature is a second six-tuple, and the second six-tuple includes a second source port number and a second destination port number.
  • the third data feature is a third six-tuple, and the third six-tuple includes a third source port number and a third destination port number.
  • the first data feature includes a first five-tuple, and the first five-tuple includes a first source port number and a first destination port number.
  • the above-mentioned second data feature includes a second five-tuple, and the above-mentioned second five-tuple includes a second source port number and a second destination port number.
  • the above-mentioned third data feature includes a third quintuple, and the above-mentioned third quintuple includes a third source port number and a third destination port number.
  • the information contained in the quintuple consists of the source port number and the destination port number, and may also include one or more of the source IP address, the destination IP address, and the transport layer protocol, which is not limited in this article.
  • the above method further includes: after receiving the first deactivation request sent by the first application side device, determining whether the second application side device needs to continue to use the first IP address based on the first deactivation request. Carry out communication with the core network; if yes, only remove the communication link between the first application side device and the communication module; if not, remove the communication link between the first application side device and the communication module communication link between the modules, forward the first deactivation request to the core network, and remove the communication link between the communication module and the core network.
  • the above method also includes the method shown in Figure 5:
  • S502 Determine whether the second processor needs to continue communicating with the core network based on the first IP address.
  • the above determination of whether the second processor needs to continue communicating with the core network based on the first IP address includes: determining whether there is a second dialing entity corresponding to the second application side device; the second The dialing entity is a dialing entity created by the communication module to maintain parameter information of the communication link involved in the communication between the second application side device and the core network through the communication module; if so, determine The second application side device still needs to continue to communicate with the core network based on the first IP address; if not, it is determined that the second application side device no longer needs to continue to communicate with the core network based on the first IP address. address for communication with the core network.
  • dial-up entity corresponding to the application-side device is not destroyed, it means that the corresponding application-side device still needs to continue to communicate with the core network through the corresponding IP address. That is to say, if the second dial-up entity is not deleted, it means that the second application-side device still needs to continue to communicate with the core network through the first IP address to access the server.
  • the modem can determine whether the second application side device needs to continue to communicate with the core network based on the first IP address by determining whether a second dialing entity corresponding to the second application side device and the first IP address is currently maintained. communication between. For example, if the above-mentioned second dial-up entity is not maintained in the modem, indicating that the second dial-up entity has not been created, or the second dial-up entity has been created but the created second dial-up entity has been cleared, then determine that the second application-side device There is no need to continue communicating with the core network based on the first IP address. For example, if the modem maintains the above second dial-up entity, it is determined that the second application side device still needs to continue communicating with the core network based on the first IP address.
  • step S503 is executed; when it is determined that the second processor does not need to continue communicating with the core network based on the first IP address. In the case of communication, step S504 is executed.
  • the first application-side device does not need to use the first IP address and initiates the above-mentioned first deactivation request
  • the second processor needs to continue communicating with the core network based on the first IP address
  • the modem does not send the first deactivation request to the core network through the air interface, and does not remove the connection between the modem and the communication module.
  • the communication link resource related to the first IP address is used instead of only dismantling the communication link between the first application side device and the communication module.
  • the above-mentioned removal of the communication link between the first application side device and the communication module refers to the elimination of the communication link parameter information between the first application side device and the communication module in terms of software information, rather than the removal of the communication link parameter information between the first application side device and the communication module. Dismantle communication circuits between hardware layers.
  • the deleting the communication link between the first application side device and the communication module includes: deleting the first dialing entity, and deleting the association between the first application side device and the first IP address;
  • the first dialing entity is used to maintain the parameter information of the communication link involved in the communication between the first application side device and the core network through the communication module; and send the information about the first application side device to the first application side device.
  • the request result of the first deactivation request is a return result of successful deactivation.
  • the return result of successful deactivation may be used to indicate that the modem has removed the bearer related to the first application-side device.
  • the modem sends an instruction message to the first application side device to delete the binding relationship between the first network card and the first IP address.
  • the first application-side device deletes the binding relationship between the first network card and the first IP address recorded by the first application-side device, and deletes the record in the routing configuration of the first application-side device. The relationship between the third network card and the first network card.
  • the first application side device after the first application side device initiates the first deactivation request, it will not immediately delete the binding relationship between the first network card and the first IP address, but First, the association relationship between the first network card and the first IP address established in the first application side device is set to an unavailable state, that is, the information about the first IP address is in an unavailable state, and the first application side device will not also Data can no longer be sent to the core network based on the first IP address and modem. After receiving the return result of successful deactivation, the first application-side device deletes the binding relationship between the first network card and the first IP address.
  • S504 Send a first deactivation request to the core network, dismantle the communication link between the first application-side device and the communication module, and dismantle the communication link between the communication module and the core network.
  • the modem can send the first deactivation request to the core network through the air interface. It is understandable that after receiving the deactivation request for the first IP address, the core network will terminate the association between the first IP address and the above-mentioned modem, which can also be understood as invalidating the first IP address.
  • the modem can perform the above-mentioned tasks of sending the first deactivation request to the core network and dismantling the communication link between the first application-side device and the communication module simultaneously or successively. This article does not do this. limited.
  • deleting the communication link between the communication module and the core network means deleting the association between the third network card and the first IP address recorded on the modem side.
  • the modem After the modem sends the above-mentioned first deactivation request, it will not immediately dismantle the communication link between the communication module and the core network, but will connect the modem's network card (third network card) recorded in the modem with the first IP address. The relationship is set to an unavailable state.
  • the modem receives the deactivation success indication message responded by the core network, the modem deletes the recorded association between the third network card and the first IP address.
  • the modem handles the second deactivation request for the first IP address initiated by the second application side device in the same manner as the modem receives the first deactivation request for the first IP address initiated by the first application side device.
  • Activation requests are handled in a similar manner and will not be described in detail.
  • the above method further includes: after receiving a second deactivation request from the second application-side device for the first IP address, determining whether the first processor needs to continue to operate based on the first IP address. address to communicate with the core network; when it is determined that the first processor needs to continue to communicate with the core network based on the first IP address, do not send a message to the core network.
  • the second deactivation request is sent to the core network, and the communication link between the first application side device and the communication module is removed.
  • the modem does not perform the task of sending the first deactivation request to the base station. Instead, the task of dismantling the communication link between the first application-side device and the modem is first performed, and then the tasks of dismantling the communication link between the first application-side device and the modem and sending the second deactivation request to the base station are performed.
  • the modem can simultaneously or successively perform the dismantling of the communication link between the first application-side device and the communication module, and the dismantling of the communication link.
  • the communication link between the second application side device and the communication module and the air interface initiate a deactivation request (first deactivation request or second deactivation request) for the first IP address to the base station.
  • first deactivation request and second deactivation request are only to distinguish whether the activation request comes from the first application side device or the second application side device, and the specific parameters of the first deactivation request and the second deactivation request are The information can be consistent, and this article does not limit this.
  • the first network card, the second network card or the third network card refers to a physical network card including a MAC address.
  • some management tasks can be performed through the shared management module (share manage) in the modem to perform communication between the first application side device, the second application side device and the core network.
  • the share manager determines whether to forward an activation request regarding the first APN (such as the above-mentioned second activation request) to the core network, and/or the share manager performs how to determine the destination of the downlink data when receiving the downlink data. belongs to The first application side device is still the second application side device.
  • the share manager executes one or more of the methods shown in Figures 4 and 5.
  • the shared management module can be a hardware module and/or a software application in the communication module.
  • the share manage is a program class included in the communication module including a hardware processing unit and a software program. Or instantiated object interaction software and hardware modules, this article does not limit this.
  • FIG. 6 provides a schematic structural diagram of a communication module according to an embodiment of the present invention.
  • the communication module is connected to at least a first application side device and a second application side device.
  • the communication module according to the embodiment of the present invention may include:
  • the communication module is connected to at least a first application side device and a second application side device, and the communication module includes:
  • the first receiving unit 601 is configured to receive the first activation request sent by the first application side device through the first access point name APN, and forward the first activation request to the core network;
  • the second receiving unit 602 is configured to receive the first Internet Protocol IP address fed back by the core network in response to the first activation request, and forward the first IP address to the first application side device;
  • the first receiving unit 601 is also configured to receive a second activation request sent by the second application side device through the first APN;
  • the response unit 603 is configured to feed back the first IP address to the second application side device in response to the second activation request.
  • the above communication module also includes:
  • the first determining unit 604 is used to determine whether the second activation request carries the first APN; the response unit 603 is specifically used to determine whether the second activation request carries the first APN. , in response to the second activation request, feedback the first IP address to the second application side device.
  • the above response unit 603 is specifically used to establish a second dialing entity regarding the second activation request, and the second dialing entity is used to maintain the second application side device through the Parameter information of the communication link involved in communication between the communication module and the core network; sending the first IP address and indication information indicating successful link establishment to the second application side device.
  • the above-mentioned first receiving unit 601 is also configured to receive the first uplink data sent by the first application side device and the second uplink data sent by the second application side device, and send The first uplink data and the second uplink data are forwarded to the core network; the first uplink data carries first data characteristics, and the second uplink data carries second data characteristics; the above-mentioned second receiving unit 602 It is also used to receive downlink data sent by the core network, and the downlink data carries a third data feature; the above-mentioned communication module also includes: a sending unit 605, used to compare the third data feature with the first data feature. If the third data feature matches the second data feature, the downlink data is sent to the first application side device. If the third data feature matches the second data feature, the downlink data is sent to the second application side device.
  • the communication module further includes: a second determining unit 606, configured to determine that the second application-side device sends a first deactivation request after receiving the first deactivation request from the first application-side device. Whether the device needs to continue to communicate with the core network based on the first IP address; the removal unit 607 is used to determine whether the second application side device needs to continue to communicate with the core network based on the first IP address.
  • the above-mentioned removal unit 607 is specifically used to delete the first dial-up entity; the first dial-up entity is used to maintain the connection between the first application-side device and the core network through the communication module. Parameter information of the communication link involved in the communication; sending a request result regarding the first deactivation request to the first application side device is a return result of successful deactivation.
  • the communication module shown in Figure 6 or Figure 7 can have a variety of product forms.
  • the communication module may also be a communication module of a processor, a communication interface, a memory, and a communication bus as shown in FIG. 8 .
  • the communication module 80 may include:
  • the communication bus 802 is used to realize connection communication between these components.
  • the communication interface 803 may optionally include a standard wired interface or a wireless interface (such as a WI-FI interface or a Bluetooth interface, etc.).
  • the memory 804 may be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory.
  • the memory 804 may optionally be at least one storage device located remotely from the processor 801 . As shown in Figure 8, memory 804, which is a computer storage medium, may include an operating system and program instructions.
  • the processor 801 may be used to implement the steps or methods performed by the first receiving unit 601, the second receiving unit 602, and the response unit 603 in FIG. 6 .
  • processor 801 and other modules in the communication module 80 may also be used to execute the first receiving unit 601, the second receiving unit 602, and the response in FIG. 6
  • the steps or methods performed by unit 603 are not limited in this article.
  • processor 801 can also be used to implement the steps performed by one or more of the first determination unit 604, the sending unit 605, the second determination unit 606 and the disassembly unit 607 in Figure 7 or method.
  • processor 801 and other modules in the communication module 80 may also be used to execute the first determining unit 604, the sending unit 605, and the second determining unit in FIG. 7 606 and the steps or methods performed by one or more units in the dismantling unit 607 are not limited herein.
  • the processor 801 can be used to load the program instructions stored in the memory 804, and specifically perform the following operations:
  • Communication between the first application side device and the core network is performed based on the first IP address, and communication between the second application side device and the core network is performed based on the first IP address. communication.
  • the first application side device the second application side device, the first APN, the first IP address and the second
  • the first APN the first APN
  • the first IP address the second
  • the communication module the first application side device, the second application side device, the first APN, the first IP address and the second
  • Embodiments of the present invention also provide a computer storage medium.
  • the computer storage medium can store multiple instructions.
  • the instructions are suitable for being loaded by a processor and executing the method steps of the embodiments shown in Figures 2 to 5.
  • For the specific execution process please refer to the specific description of the embodiment shown in Figures 2 to 5, and will not be described again here.
  • the term “when” may be interpreted to mean “if" or “after” or “in response to determining" or “in response to detecting" depending on the context.
  • the phrase “when determining" or “if (stated condition or event) is detected” may be interpreted to mean “if it is determined" or “in response to determining" or “on detecting (stated condition or event)” or “in response to detecting (stated condition or event)”.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted over a wired connection from a website, computer, server, or data center (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media.
  • the available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media (eg, solid state drive), etc.

Abstract

La présente demande concerne un procédé de communication et un module de communication. Le procédé de communication est appliqué à un module de communication, et le module de communication est au moins connecté à un premier dispositif côté application et à un second dispositif côté application. Le procédé consiste à : recevoir une première demande d'activation qui est envoyée par un premier dispositif côté application au moyen d'un premier APN, puis transférer la première demande d'activation à un réseau central ; recevoir une première adresse IP qui est renvoyée par le réseau central en réponse à la première demande d'activation, puis transférer la première adresse IP au premier dispositif côté application ; recevoir une seconde demande d'activation qui est envoyée par un second dispositif côté application au moyen du premier APN ; et renvoyer la première adresse IP au second dispositif côté application en réponse à la seconde demande d'activation. La présente demande permet de satisfaire l'exigence de communication d'une pluralité de dispositifs côté application s'amarrant au même module de communication afin d'utiliser le même APN pour la mise en réseau, ce qui améliore l'efficacité de la communication.
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