CN111405496A - Communication method and system based on cross-type communication link - Google Patents
Communication method and system based on cross-type communication link Download PDFInfo
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- CN111405496A CN111405496A CN202010225923.2A CN202010225923A CN111405496A CN 111405496 A CN111405496 A CN 111405496A CN 202010225923 A CN202010225923 A CN 202010225923A CN 111405496 A CN111405496 A CN 111405496A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
Abstract
The invention discloses a communication method and a system based on a cross-type communication link, wherein the method comprises the following steps: the message creating end establishes and broadcasts a message to be forwarded through a far-field communication link or a near-field communication link; after receiving the message to be forwarded, any message receiving terminal judges whether the message to be forwarded is a target receiving object, if so, the message to be forwarded is received, and if not, the message to be forwarded is continuously broadcasted by adopting a far-field communication link and/or a near-field communication link until the message to be forwarded is sent to the target receiving object. The invention can forward a message pointing to a specific robot or specific Internet of things equipment through other robots with communication capacity, Internet of things equipment or remote terminals, so that the robot or the Internet of things equipment can still obtain corresponding information through another link under the condition that one communication link is unavailable, thereby improving the stability and accuracy of communication and meeting the actual communication requirements of high timeliness and high accuracy.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of robots, in particular to a communication method and a communication system based on a cross-type communication link.
[ background of the invention ]
With the development of the technology, the service mobile robot can help people to complete simple and repetitive work tasks, such as material transfer work on the same floor and across floors, night patrol work in buildings, or guest welcome work in entertainment places such as hotels and KTVs, so that the work content of people such as dish passers, couriers, security guards and guests is reduced, and people and units are helped to save manpower. The above specific affairs usually require cooperative work among a plurality of mobile robots and between the mobile robots and the internet of things devices, that is, it is necessary to ensure that the mobile robots and the internet of things devices timely and accurately acquire message contents with correct clocks and correct logical sequences, such as geographical positions, movement information, task states, task priorities, and the like, of the mobile robots and the internet of things devices, so that communication quality between the mobile robots and the internet of things devices is required to be ensured. In the prior art, a mobile robot and internet of things equipment can adopt a 2.4G near-field communication mode and a 4G far-field communication mode to acquire respective required information contents, but because the situations of field communication signals are different or hardware fails, a certain communication link between the robots or between the robot and the internet of things equipment is easily unavailable, so that the communication stability is affected by the situations of packet loss and the like, and the actual communication requirements of high timeliness and high accuracy are difficult to meet.
[ summary of the invention ]
The invention provides a communication method and a communication system based on a cross-type communication link, which solve the technical problems.
The technical scheme for solving the technical problems is as follows: a communication method based on cross-type communication links comprises the following steps:
step 1, a message creating end establishes a message to be forwarded and broadcasts the message to be forwarded through a far-field communication link or a near-field communication link;
step 2, after receiving the message to be forwarded, any message receiving end judges whether the message to be forwarded is a target receiving object, if so, the message to be forwarded is received, and if not, the message to be forwarded is continuously broadcasted by adopting a far-field communication link and/or a near-field communication link until the message to be forwarded is sent to the target receiving object;
the message to be forwarded comprises a device number of a message creation end, a device number of a target receiving object, a message type and message content, wherein the message type is defined as a forwarding type.
In a preferred embodiment, the message creating terminal, the message receiving terminal and the target receiving object each include a remote terminal, a mobile robot and/or an internet of things device.
In a preferred embodiment, the far-field communication link comprises a mobile communication link, a WIFI communication link and/or an internet of things communication link, and the near-field communication link comprises any one or more of a 2.4G network, a Bluetooth network, an RFID network, an NFS network, a ZigBee network, a UWB network and an L IFI network.
In a preferred embodiment, after receiving the message to be forwarded, any one of the message receiving ends determines whether the message to be forwarded is a target receiving object, and if not, the message to be forwarded is continuously broadcasted by using the far-field communication link and/or the near-field communication link until the message to be forwarded is sent to the target receiving object, which specifically includes:
after receiving the message to be forwarded, any message receiving end judges whether the own equipment number is consistent with the equipment number of the target receiving object of the message to be forwarded, if so, the message to be forwarded is received, if not, whether far-field and/or near-field connection can be established with the target receiving object is judged, if connection can be successfully established, the message to be forwarded is directly sent to the target receiving object, and if connection cannot be successfully established, the message to be forwarded is continuously broadcasted by adopting a far-field communication link and/or a near-field communication link.
In a preferred embodiment, the determining, by the message receiving end, whether the far-field or near-field connection with the target receiving object can be established specifically includes: when the message receiving end can search the equipment number of the target receiving object through a near field communication link and the communication quality of the near field communication link reaches a first preset condition, the message receiving end can successfully establish near field connection with the target receiving object;
when the message receiving end can be connected with a target receiving object through a far-field communication link and the communication quality of the far-field communication link reaches a second preset condition, the message receiving end can successfully establish far-field connection with the target receiving object.
A second aspect of the embodiments of the present invention provides a communication system based on a cross-type communication link, including a message creation end and at least one message receiving end,
the message creating end is used for creating a message to be forwarded and broadcasting the message to be forwarded through a far-field communication link or a near-field communication link;
the message receiving end is used for receiving the message to be forwarded and judging whether the message to be forwarded is a target receiving object or not, if so, the message to be forwarded is received, and if not, the message to be forwarded is continuously broadcasted by adopting a far-field communication link and/or a near-field communication link until the message to be forwarded is sent to the target receiving object;
the message to be forwarded comprises a device number of a message creation end, a device number of a target receiving object, a message type and message content, wherein the message type is defined as a forwarding type.
In a preferred embodiment, the message creating terminal, the message receiving terminal and the target receiving object each include a remote terminal, a mobile robot and/or an internet of things device.
In a preferred embodiment, the far-field communication link comprises a mobile communication link, a WIFI communication link and/or an internet of things communication link, and the near-field communication link comprises any one or more of a 2.4G network, a Bluetooth network, an RFID network, an NFS network, a ZigBee network, a UWB network and an L IFI network.
In a preferred embodiment, the message receiving end specifically comprises a judging unit, an information receiving unit and a forwarding unit,
the judging unit is used for judging whether the own equipment number is consistent with the equipment number of the target receiving object of the message to be forwarded or not after receiving the message to be forwarded;
the information receiving unit is used for receiving the message to be forwarded when the equipment number of the information receiving unit is consistent with the equipment number of the target receiving object of the message to be forwarded;
the forwarding unit is used for judging whether far-field and/or near-field connection can be established with the target receiving object or not when the equipment number of the forwarding unit is not consistent with the equipment number of the target receiving object of the message to be forwarded, if the connection can be established successfully, the message to be forwarded is directly sent to the target receiving object, and if the connection can not be established successfully, the message to be forwarded is broadcasted by adopting a far-field communication link and/or a near-field communication link.
In a preferred embodiment, the forwarding unit is specifically configured to determine that the message receiving end can successfully establish a near field connection with the target receiving object when the message receiving end can search for the device number of the target receiving object through a near field communication link and the communication quality of the near field communication link reaches a first preset condition; and the message receiving end is used for judging that the message receiving end can successfully establish far-field connection with the target receiving object when the message receiving end can be connected with the target receiving object through a far-field communication link and the communication quality of the far-field communication link reaches a second preset condition.
The invention provides a communication method and a system based on cross-type communication links, which can forward a message pointing to a specific robot or specific Internet of things equipment through other robots with communication capacity, Internet of things equipment or remote terminals so as to send the message to the specific equipment, so that the robot or the Internet of things equipment can still obtain corresponding information through another link under the condition that one communication link is unavailable, the stability and the accuracy of communication are improved, and the actual communication requirements of high timeliness and high accuracy are met.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic flowchart of a communication method based on a cross-type communication link according to embodiment 1;
fig. 2 is a schematic structural diagram of a communication system based on cross-type communication links according to embodiment 2.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantageous effects of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a schematic flowchart of a communication method based on a cross-type communication link according to embodiment 1, and as shown in fig. 1, the method includes the following steps:
the method comprises the steps that step 1, a message to be forwarded is established by a message establishing end, the envelope of the message to be forwarded is provided with the equipment number of the message establishing end, the equipment number of a target receiving object and the message type, the message type is defined as the forwarding type, namely, the message establishing end actively establishes a message to be forwarded, then the message to be forwarded is broadcasted through a far-field communication link or a near-field communication link, for example, the message to be forwarded is broadcasted through the near-field communication link when no far-field communication hardware or far-field communication link is unavailable, the message to be forwarded is broadcasted through the far-field communication link when no near-field communication hardware or near-field communication link is unavailable, the far-field communication link comprises a mobile communication link, a WIFI communication link and/or an internet of things communication link, and the like, the near-field communication link comprises any one or more of a 2.4G network, a Bluetooth network, an RFID network, an NFS.
And 2, after receiving the message to be forwarded by any message receiving end, actively judging whether the message to be forwarded is a target receiving object, if so, receiving the message to be forwarded, and if not, continuously broadcasting the message to be forwarded by adopting a far-field communication link and/or a near-field communication link until the message to be forwarded is sent to the target receiving object. Specifically, after receiving the message to be forwarded, any message receiving end judges whether the device number of the message receiving end is consistent with the device number of the target receiving object of the message to be forwarded, if so, the message to be forwarded is directly received, if not, whether far-field and/or near-field connection can be established with the target receiving object is judged, if connection can be successfully established, the message to be forwarded is directly sent to the target receiving object, if connection cannot be successfully established, the message to be forwarded is continuously broadcasted by adopting a far-field communication link and/or a near-field communication link, and then the process of the step 2 is repeated until the message to be forwarded is sent to the target receiving object.
In a preferred embodiment, the determining, by the message receiving end, whether the far-field or near-field connection with the target receiving object can be established specifically includes: when the message receiving end can search for the equipment number of the target receiving object through the near field communication link, and the communication quality of the near field communication link reaches a first preset condition, for example, the signal strength is greater than a preset value or the packet loss rate, the response time is less than a preset value, and the like, the message receiving end can successfully establish near field connection with the target receiving object, and at this time, the message to be forwarded can be sent through the near field communication link.
Or when the message receiving end can be connected with the target receiving object through the far-field communication link and the communication quality of the far-field communication link reaches a second preset condition, such as the signal intensity is greater than a preset value or the packet loss rate, the response time is less than a preset value, and the like, it is indicated that the message receiving end can successfully establish the far-field connection with the target receiving object, and at this time, the message to be forwarded can be sent through the far-field communication link. When the near field communication link and the far field communication link can be successfully connected, the message to be forwarded can be sent at the same time, so that the communication efficiency is improved.
In a specific embodiment, the message creating end, the message receiving end, and the target receiving object may be a mobile robot, an internet of things device (such as an elevator, a gate, a door opening and closing), or a far-field terminal (such as a cloud server), which is described below through a specific application scenario.
For example, in an application scenario, a mobile robot a needs to send a message to a mobile robot B and an elevator C, but the mobile robot a, the mobile robot B and the elevator C are difficult to connect through a near field, at this time, the mobile robot a may establish a message to be forwarded first and broadcast through a far field communication link, and after receiving the message to be forwarded through the far field communication link, a cloud server D or a routing device E having a WIFI hotspot forwards the message to be forwarded to the mobile robot B and the elevator C through its own far field communication link, thereby achieving communication between the mobile robot a and the mobile robot B, as well as the elevator C.
In another application scenario, the cloud server a needs to send a message to the mobile robot B and the elevator C, but far-field communication hardware of the mobile robot B and the elevator C is damaged, at this time, the cloud server may first establish a message to be forwarded, then broadcast through a far-field communication link, the mobile robot D or the gate E close to the mobile robot B and the elevator C receives the message to be forwarded through the far-field communication link, and then forward the message to be forwarded to the mobile robot B and the elevator C through a near-field communication link of the cloud server a, so that communication between the cloud server a and the mobile robot B and between the cloud server a and the elevator C is achieved.
In another application scenario, the mobile robot a needs to send a message to the cloud server B, but far-field communication hardware of the mobile robot a is damaged, at this time, the mobile robot a may first establish a message to be forwarded, then broadcast the message through a near-field communication link, and after receiving the message to be forwarded, the mobile robot C close to the mobile robot a finds that there is no far-field communication signal at the position where the mobile robot C is located, so that the message to be forwarded is continuously broadcast through its own near-field communication link, and after receiving the message to be forwarded, the elevator D close to the mobile robot C forwards the message to the cloud server B through its own far-field communication link, thereby implementing communication between the mobile robot a and the cloud server B.
The embodiment provides a communication method based on a cross-type communication link, which can forward a message pointing to a specific robot or specific internet of things equipment through other robots with communication capacity, the internet of things equipment or remote terminals so as to send the message to the specific equipment, so that the robot or the internet of things equipment can still obtain corresponding information through another link under the condition that one communication link is unavailable, the stability and the accuracy of communication are improved, and the actual communication requirements of high timeliness and high accuracy are met.
In a preferred embodiment, when the message receiving end is a mobile robot, the mobile robot may be driven to move to a suitable position, for example, where far-field communication quality is good or close to a target receiving object, and then forward the message to be forwarded, thereby further improving communication efficiency and communication stability.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 2 is a schematic structural diagram of a communication system based on cross-type communication links according to embodiment 2, as shown in fig. 2, including a message creation end 100 and at least one message receiving end 200,
the message creating terminal 100 is configured to create a message to be forwarded, and broadcast the message to be forwarded through a far-field communication link or a near-field communication link;
the message receiving terminal 200 is configured to receive a message to be forwarded, determine whether the message is the target receiving object 300, receive the message to be forwarded if the message is the target receiving object, and continue to broadcast the message to be forwarded by using the far-field communication link and/or the near-field communication link if the message is not the target receiving object 300;
the message to be forwarded comprises the equipment number of the message creation end, the equipment number of the target receiving object, the message type and the message content, and the message type is defined as the forwarding type.
In a preferred embodiment, the message creation end 100, the message receiving end 200 and the target receiving object 300 each include a remote terminal, a mobile robot and/or an internet of things device.
In a preferred embodiment, the far-field communication link comprises a mobile communication link, a WIFI communication link and/or an internet of things communication link, and the near-field communication link comprises any one or more of a 2.4G network, a Bluetooth network, an RFID network, an NFS network, a ZigBee network, a UWB network and an L IFI network.
In the preferred embodiment, the message receiving end 200 specifically includes a judging unit 201, an information receiving unit 202 and a forwarding unit 203,
the determining unit 201 is configured to determine whether the device number of the determining unit is consistent with the device number of the target receiving object of the message to be forwarded after receiving the message to be forwarded;
the information receiving unit 202 is configured to receive the message to be forwarded when the device number of the information receiving unit is consistent with the device number of the target receiving object of the message to be forwarded;
the forwarding unit 203 is configured to, when the device number of the forwarding unit is not consistent with the device number of the target receiving object of the message to be forwarded, determine whether a far-field and/or near-field connection can be established with the target receiving object, if the connection can be successfully established, directly send the message to be forwarded to the target receiving object, and if the connection cannot be successfully established, continue to broadcast the message to be forwarded by using the far-field communication link and/or the near-field communication link.
In a preferred embodiment, the forwarding unit 203 is specifically configured to determine that the message receiving end can successfully establish a near field connection with the target receiving object when the message receiving end can search for the device number of the target receiving object through the near field communication link and the communication quality of the near field communication link reaches a first preset condition; and the far-field communication link is used for judging that the message receiving end can successfully establish the far-field connection with the target receiving object when the message receiving end can be connected with the target receiving object through the far-field communication link and the communication quality of the far-field communication link reaches a second preset condition.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and method steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, a module or a unit may be divided into only one logical function, and may be implemented in other ways, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The invention is not limited solely to that described in the specification and embodiments, and additional advantages and modifications will readily occur to those skilled in the art, so that the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.
Claims (10)
1. A communication method based on cross-type communication links is characterized by comprising the following steps:
step 1, a message creating end establishes a message to be forwarded and broadcasts the message to be forwarded through a far-field communication link or a near-field communication link;
step 2, after receiving the message to be forwarded, any message receiving end judges whether the message to be forwarded is a target receiving object, if so, the message to be forwarded is received, and if not, the message to be forwarded is continuously broadcasted by adopting a far-field communication link and/or a near-field communication link until the message to be forwarded is sent to the target receiving object;
the message to be forwarded comprises a device number of a message creation end, a device number of a target receiving object, a message type and message content, wherein the message type is defined as a forwarding type.
2. The communication method based on the cross-type communication link according to claim 1, wherein the message creation end, the message receiving end and the target receiving object each comprise a remote terminal, a mobile robot and/or an internet of things device.
3. The communication method based on the cross-type communication link according to claim 1 or 2, wherein the far-field communication link comprises a mobile communication link, a WIFI communication link and/or an Internet of things communication link, and the near-field communication link comprises any one or more of a 2.4G network, a Bluetooth network, an RFID network, an NFS network, a ZigBee network, a UWB network and an L IFI network.
4. The communication method according to claim 3, wherein after receiving the message to be forwarded, the any message receiving end determines whether the message to be forwarded is a target receiving object, and if not, the far-field communication link and/or the near-field communication link continues to be used for broadcasting the message to be forwarded until the message to be forwarded is sent to the target receiving object, specifically:
after receiving the message to be forwarded, any message receiving end judges whether the own equipment number is consistent with the equipment number of the target receiving object of the message to be forwarded, if so, the message to be forwarded is received, if not, whether far-field and/or near-field connection can be established with the target receiving object is judged, if connection can be successfully established, the message to be forwarded is directly sent to the target receiving object, and if connection cannot be successfully established, the message to be forwarded is continuously broadcasted by adopting a far-field communication link and/or a near-field communication link.
5. The communication method according to claim 4, wherein the determining whether the far-field or near-field connection with the target receiving object can be established by the message receiving end specifically comprises: when the message receiving end can search the equipment number of the target receiving object through a near field communication link and the communication quality of the near field communication link reaches a first preset condition, the message receiving end can successfully establish near field connection with the target receiving object;
when the message receiving end can be connected with a target receiving object through a far-field communication link and the communication quality of the far-field communication link reaches a second preset condition, the message receiving end can successfully establish far-field connection with the target receiving object.
6. A communication system based on cross-type communication link is characterized in that the communication system comprises a message creation end and at least one message receiving end,
the message creating end is used for creating a message to be forwarded and broadcasting the message to be forwarded through a far-field communication link or a near-field communication link;
the message receiving end is used for receiving the message to be forwarded and judging whether the message to be forwarded is a target receiving object or not, if so, the message to be forwarded is received, and if not, the message to be forwarded is continuously broadcasted by adopting a far-field communication link and/or a near-field communication link until the message to be forwarded is sent to the target receiving object;
the message to be forwarded comprises a device number of a message creation end, a device number of a target receiving object, a message type and message content, wherein the message type is defined as a forwarding type.
7. The communication system of claim 6, wherein the message creation end, the message receiving end and the target receiving object comprise a remote terminal, a mobile robot and/or an internet of things device.
8. The communication system of claim 6 or 7, wherein the far-field communication link comprises a mobile communication link, a WIFI communication link and/or an Internet of things communication link, and the near-field communication link comprises any one or more of a 2.4G network, a Bluetooth network, an RFID network, an NFS network, a ZigBee network, a UWB network and an L IFI network.
9. The communication system according to claim 8, wherein the message receiver comprises a determining unit, an information receiving unit and a forwarding unit,
the judging unit is used for judging whether the own equipment number is consistent with the equipment number of the target receiving object of the message to be forwarded or not after receiving the message to be forwarded;
the information receiving unit is used for receiving the message to be forwarded when the equipment number of the information receiving unit is consistent with the equipment number of the target receiving object of the message to be forwarded;
the forwarding unit is used for judging whether far-field and/or near-field connection can be established with the target receiving object or not when the equipment number of the forwarding unit is not consistent with the equipment number of the target receiving object of the message to be forwarded, if the connection can be established successfully, the message to be forwarded is directly sent to the target receiving object, and if the connection can not be established successfully, the message to be forwarded is broadcasted by adopting a far-field communication link and/or a near-field communication link.
10. The communication system according to claim 9, wherein the forwarding unit is specifically configured to determine that the message receiving end can successfully establish the near field connection with the target receiving object when the message receiving end can search for the device number of the target receiving object through the near field communication link and the communication quality of the near field communication link reaches a first preset condition; and the message receiving end is used for judging that the message receiving end can successfully establish far-field connection with the target receiving object when the message receiving end can be connected with the target receiving object through a far-field communication link and the communication quality of the far-field communication link reaches a second preset condition.
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Application publication date: 20200710 |