CN107708167B - Terminal, system and communication method capable of adaptively switching wide-band and narrow-band communication - Google Patents
Terminal, system and communication method capable of adaptively switching wide-band and narrow-band communication Download PDFInfo
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- CN107708167B CN107708167B CN201710797783.4A CN201710797783A CN107708167B CN 107708167 B CN107708167 B CN 107708167B CN 201710797783 A CN201710797783 A CN 201710797783A CN 107708167 B CN107708167 B CN 107708167B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
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Abstract
The invention has proposed a terminal station, system and its communication method that can switch over the communication of the wide-band and narrow-band adaptively, the terminal station includes the adaptive switching module, control module, power module, narrow-band communication module, broadband communication module; the control module respectively drives and controls the self-adaptive switching module, the narrow-band communication module and the broadband communication module; the system comprises a plurality of terminals for adaptively switching the broadband and narrowband communication, a narrowband frequency point distribution module, a plurality of narrowband channels and one or more broadband channels; each self-adaptive switching module controlled by the method of the invention can self-adaptively switch narrow-band communication or broadband communication according to the size of data to be sent, thereby improving the utilization rate of the bandwidth and improving the phenomenon of narrow-band delay caused by large data or bandwidth waste caused by small data; the frequency points are arranged, when one terminal is communicated with a plurality of other terminals at the same time, the communication between the terminal and another terminal cannot be influenced due to the occupation of one channel, the communication efficiency is improved, and the utilization rate of the channel is improved.
Description
Technical Field
The invention relates to the technical field of wireless communication broadband and narrowband integration, in particular to a broadband and narrowband communication terminal, system and method capable of adaptively switching.
Background
Under the conditions of handling some natural disaster events, public safety events, military exercises and the like, an operator needs to communicate with a command department, the command department needs to know the actual conditions of the operator, and the operator also needs to know the actual commands of the command department. However, existing networks communicate primarily through three ways: one is narrow-band communication in a cluster mode, the bandwidth is small, and only voice and a small amount of data can be transmitted; one is broadband transmission similar to or the same as the existing LTE network, and can transmit high-definition video signals and a large amount of data; one is a wide-narrow band fusion mode, wide and narrow bands are communicated, although the bandwidth utilization rate is improved to a certain extent, in the existing wide-narrow band fusion method, only a fixed transmission method, narrow band transmission or broadband transmission can be used at a fixed moment, and random selection cannot be performed.
Disclosure of Invention
The object of the present invention is to solve at least one of the technical drawbacks mentioned.
In order to achieve the above object, an embodiment of an aspect of the present invention provides a terminal capable of adaptively switching narrowband and wideband communications, including: the system comprises a self-adaptive switching module, a control module, a power supply module, a narrow-band communication module and a broadband communication module;
the power supply module is connected with the control module, and the control module provides working voltage for the self-adaptive switching module, the control module, the narrow-band communication module and the broadband communication module;
the control module is used for presetting a switching bandwidth threshold of the self-adaptive switching module, the threshold is the maximum transmission rate of the narrow-band communication module, and the working voltage from the power supply module is used for respectively driving the self-adaptive switching module, the narrow-band communication module and the broadband communication module;
the self-adaptive switching module judges whether the size of the data to be sent is larger than the switching bandwidth threshold value or not according to the size of the data to be sent; if the size of the data to be sent is smaller than the switching bandwidth threshold, the self-adaptive switching module automatically selects the narrow-band communication module to send the data to be sent; when the size of the data to be sent is larger than or equal to the switching bandwidth threshold value, the self-adaptive switching module automatically selects the broadband communication module to send the data to be sent;
the narrowband communication module is used for sending and receiving information on a narrowband;
the broadband communication module is used for sending and receiving information on broadband.
Preferably, the terminal for adaptively switching the broadband and narrowband communication at least further comprises a satellite positioning module, a video module, a voice module and a display module which are connected with the control module; the video module is used for shooting and generating pictures and videos of the terminal, and coding and decoding the pictures and the videos; the voice module is used for recording and playing the sound received by the terminal, and coding and decoding the sound; the satellite positioning module is used for positioning the terminal; the display module is used for displaying and playing the multimedia information of the terminal.
Preferably, the handover bandwidth threshold is in a range of 7.5Kb to 128 Kb.
The invention also provides a system capable of adaptively switching the broadband and narrowband communication, which comprises a plurality of terminals for adaptively switching the broadband and narrowband communication, a narrowband frequency point distribution module, a plurality of narrowband channels and one or more broadband channels;
the narrowband frequency point allocation module is used for allocating narrowband frequency points for each terminal, and the bandwidths of the narrowband frequency points are not overlapped with each other; each narrow-band frequency point corresponds to a narrow-band channel;
the narrow-band channel and the broadband channel are used for mutual communication between terminals, and the broadband channel and the narrow-band frequency point are not overlapped;
the narrow-band communication module of each terminal is used for monitoring each narrow-band frequency point, and if the narrow-band frequency point with data information is monitored, the data information on the narrow-band frequency point is received; the broadband communication module of each terminal is used for monitoring each broadband channel, and if the broadband channel with data information is monitored, the data information is received; the data information of the narrow-band frequency point and the broadband channel carries a destination address;
each terminal compares a destination address in the received data information with a self address, and when the destination address is the self address of the terminal, the data information is operated; the data information is not operated when the destination address is not the terminal's own address.
Preferably, when the narrowband frequency point allocation module allocates narrowband frequency points, and when the number of terminals is less than the number of narrowband frequency points, different frequency points are allocated to different terminals; when the number of the terminals is more than that of the narrow-band frequency points, the same frequency points are distributed for the terminals which can not generate interference in communication; the terminal which does not generate interference is a distance which is two hops or more between two terminals, and the distance of the two hops is twice of a distance which can be directly communicated by the two terminals in narrow-band communication.
When two terminals are communicating, if other terminals need to send narrow-band data information to the communicating terminal, the two terminals which send data firstly do not interrupt communication, and the other terminals do not delay the sending and directly send the data information;
when the communication terminal receiving terminal receives the narrow-band data information sent by other terminals, if the communication of sending data is carried out through the wide band, the narrow-band data information is directly received through the narrow-band module; if the communication of sending data is carried out through narrow band, narrow band information of a plurality of different sending ends is received through a narrow band module, then information of different frequency points is filtered out through filtering waves, and the information filtered out through the frequency points is information sent by the sending end corresponding to the frequency points.
Preferably, the method for adaptively switching narrowband and wideband communication of the present invention is applied to the system for adaptively switching narrowband and wideband communication, and includes the following steps:
step S1, setting N narrow-band frequency points in the system, wherein the bandwidths of the frequency points are not overlapped; presetting one or more broadband channels, wherein the broadband channels and the narrowband frequency points are not overlapped;
step S2, allocating different narrowband frequency points set in step 1 for each terminal of the self-adaptive switching wideband and narrowband communication;
step S3, the narrow-band communication module of each terminal monitors each narrow-band frequency point, if the narrow-band frequency point with data information is monitored, the data information on the narrow-band frequency point is received; the broadband communication module monitors each broadband channel, and receives data information if the broadband channel is monitored to have the data information; the data information carries a destination address;
step S4, each terminal compares the destination address in the received data information with its own address, and when the destination address is the terminal' S own address, the data information is operated; the data information is not operated when the destination address is not the terminal's own address.
Preferably, in step S2, the number of terminals in the system is preset to be M, and when the number of terminals M is less than the number of narrowband frequency points N, different frequency points are allocated to different terminals; when the number M of the terminals is more than the number N of the narrow-band frequency points, the same frequency points are distributed for the terminals which can not generate interference in communication; when the following conditions are met, the two terminals cannot generate interference in communication:
two adjacent terminals are separated by two or more than two hops; the distance of the two hops is twice the distance that two terminals in narrow-band communication can directly communicate.
Preferably, the method further includes step S5, when two terminals are communicating, and another terminal needs to send narrowband data information to the communicating terminal, the two terminals that send data first do not interrupt the communication, and the other terminal does not delay the sending and directly sends data information.
Further, in step S5, when the receiving terminal in communication receives the narrowband data information sent by another terminal, if the communication that sends data first is performed through a wideband, the narrowband module directly receives the narrowband data information; if the communication of sending data is carried out through narrow band, narrow band information of a plurality of different sending ends is received through a narrow band module, then information of different frequency points is filtered out through filtering waves, and the information filtered out through the frequency points is the information sent by the sending end corresponding to the frequency points.
According to the system and the communication method thereof capable of adaptively switching the broadband and narrowband communication, which are provided by the embodiment of the invention, the switching of the narrowband communication or the broadband communication can be adaptively carried out according to the size of data to be sent, so that the utilization rate of bandwidth is improved, and the system is different from the traditional communication limit that only a fixed transmission mode can be adopted at a fixed time; the phenomenon of narrow-band delay caused by large data or bandwidth waste caused by small data is improved; the frequency points are arranged, when one terminal is communicated with a plurality of other terminals at the same time, the communication between the terminal and another terminal cannot be influenced due to the occupation of one channel, the communication efficiency is improved, and the utilization rate of the channel is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a block diagram of a terminal capable of adaptively switching narrowband and wideband communications according to an embodiment of the present invention;
fig. 2 is a block diagram of a connection structure of a terminal capable of adaptively switching narrowband and wideband communications according to another embodiment of the present invention;
fig. 3 is a block diagram of a connection structure of a system capable of adaptively switching narrowband and wideband communications according to an embodiment of the present invention;
fig. 4 is a flowchart of a method for adaptively switching narrowband and wideband communications according to an embodiment of the present invention;
in the figure:
1. a control module; 2. a self-adaptive switching module; 3. a power supply module; 4. a narrowband communication module; 5. a broadband communication module; 6. a display module; 7. a voice module; 8. a video module; 9. and a satellite positioning module.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, a terminal capable of adaptively switching wideband and narrowband communications according to an embodiment of the present invention includes an adaptive switching module 2, a control module 1, a power supply module 3, a narrowband communication module 4, and a wideband communication module 5.
The control module 1 is configured to preset a switching bandwidth threshold of the adaptive switching module 2, and respectively drive and control the adaptive switching module 2, the narrowband communication module 4, and the broadband communication module 5.
The self-adaptive switching module 2 judges whether the data to be sent is larger than a switching bandwidth threshold value or not according to the size of the data to be sent; if the size of the data to be sent is smaller than the switching bandwidth threshold, the self-adaptive switching module 2 automatically selects the narrow-band communication module 4 to send the data to be sent; when the size of the data to be sent is greater than or equal to the switching bandwidth threshold, the adaptive switching module 2 automatically selects the broadband communication module 5 to send the data to be sent.
The power supply module 3 is connected with the control module 1, and the control module 1 provides power for the self-adaptive switching module 2, the narrow-band communication module 4 and the wide-band communication module 5.
The narrowband communication module is used for sending and receiving information on a narrowband, and the broadband communication module is used for sending and receiving information on a broadband.
In one embodiment of the present invention, the handover bandwidth threshold ranges from 7.5Kb to 128Kb, and most preferably, the handover bandwidth threshold is 12.5 Kb. When the size of the transmitted data is smaller than 12.5kb, the data is transmitted through a narrow band, such as some control information, voice information and the like; if the size of the transmitted data is larger than or equal to 12.5kb, the data is transmitted through a broadband, for example, information such as video.
As shown in fig. 2, in an embodiment of the present invention, each terminal for adaptively switching broadband and narrowband communication further includes at least a satellite positioning module 9, a video module 8, a voice module 7, and a display module 6 connected to the control module.
The video module 8 is used for shooting and playing pictures and videos of the terminal, and coding and decoding the pictures and videos; the voice module 7 is used for recording and playing the sound received by the terminal, and encoding and decoding the sound.
The satellite positioning module 9 is used for positioning the terminal. In the embodiment of the present invention, the satellite positioning module 9 may adopt one of the following ways: GPS and Beidou satellite positioning. It should be noted that the implementation of the satellite positioning module 9 is not limited to the above example, and may be implemented in other manners, which are not described herein again.
The display module 6 is used for displaying the multimedia information of the terminal. In the embodiment of the invention, the display module 6 adopts an LCD display screen or a touch screen. The control module classifies and screens the received information such as videos, pictures and audios according to the format of data, decodes the information by the corresponding video module 8, satellite positioning module 9 and voice module 7, sends the decoded videos and pictures to the display module for display, and directly plays the decoded audio information by using the voice module.
As shown in fig. 3, the present invention further provides a system capable of adaptively switching narrowband and wideband communications, which includes a plurality of terminals for adaptively switching narrowband and wideband communications, a narrowband frequency allocation module, and one or more wideband channels.
The narrowband frequency point allocation module is used for allocating narrowband frequency points for each terminal, and the bandwidths of the narrowband frequency points are not overlapped with each other; and when the number M of the terminals is more than the number N of the narrow-band frequency points, distributing the same frequency points for the terminals which can not generate interference in communication.
The following description is respectively made according to different situations of the number M of terminals and the number N of narrowband frequency points:
(1) when the M < ﹦ N, corresponding narrow-band frequency points are allocated to each terminal, and the narrow-band frequency points of each terminal are unique, so that interference cannot be generated during communication between the terminals;
(2) when M is greater than N, the condition that a plurality of terminals share one frequency point can occur, at the moment, the same frequency point needs to be distributed for the plurality of terminals, and the distribution basis is to ensure that the communication between the terminals cannot generate interference.
In the embodiment of the invention, when two adjacent terminals are separated by a distance of two or more hops, the two terminals do not generate interference in communication.
Based on this, when M > N, in order to avoid interference in communication, different frequency points are allocated to terminals that are separated by a distance within two hops between two adjacent terminals, so as to ensure that the terminals avoid interference.
In addition, for the terminals which are adjacent to each other and have a distance of two or more hops, because the terminals do not generate communication interference, a certain number of terminals are screened out from the terminals, the same frequency points are distributed to the terminals, and no interference is generated among the terminals.
In one embodiment of the invention, the wideband channel is used for mutual communication between terminals, and the wideband channel and the narrowband frequency point are not coincident.
The narrow-band communication module of each terminal is used for monitoring each narrow-band frequency point, and if data information exists in a certain narrow-band frequency point, the data information on the narrow-band frequency point is received; the broadband communication module of each terminal is used for monitoring each broadband channel, and if the broadband channel is monitored to have data information, the data information is received; the data information carries a destination address.
Each terminal compares a destination address in the received data information with a self address, and when the destination address is the self address of the terminal, the data information is operated; the data information is not operated when the destination address is not the terminal's own address.
When the narrow-band frequency point is distributed by the narrow-band frequency point distribution module and two adjacent terminals are separated by two or more hops, the two terminals cannot generate interference in communication.
When two terminals are communicating, and other terminals need to send narrow-band data information to the communicating terminals, the two terminals which send data first do not interrupt communication, and the other terminals do not delay the sending and directly send data information.
Specifically, when two terminals are communicating, if a communication request sent by a terminal of a third party to a terminal of a communicating party is received, the terminal of the communicating party continues to maintain the current communication state and simultaneously receives communication data of the terminal of the third party without the need for the terminal of the third party to delay waiting for the transmission of the data, that is, the terminal of the communicating party can simultaneously execute a plurality of data communication processes, so that the data transmission efficiency can be improved, and the utilization rate of the bandwidth can be improved.
When a receiving terminal in communication receives narrowband data information sent by other terminals, if the communication of sending data is carried out through a broadband, the narrowband module is used for directly receiving the narrowband data information; if the communication of sending data is carried out through narrow band, narrow band information of a plurality of different sending ends is received through a narrow band module, then information of different frequency points is filtered out through filtering waves, and the information filtered out through the frequency points is information sent by the sending end corresponding to the frequency points.
As shown in fig. 4, the present invention further provides a method for adaptively switching narrowband and wideband communication, which is applied to the system for adaptively switching narrowband and wideband communication, and includes the following steps:
step S1, setting N narrow-band frequency points (1 < N < 100) in the system, wherein the bandwidth of each frequency point is not overlapped; and presetting one or more broadband channels, wherein the broadband channels and the narrowband frequency points are not overlapped.
Step S2, step S2, allocating different narrowband frequency points set in step 1 to each terminal for adaptively switching wideband and narrowband communication; in step S2, the number of terminals in the system is preset to be M, and when the number of terminals M is greater than the number of narrowband frequency points N, the same frequency points are allocated to terminals that do not generate interference in communication. The following description is respectively made according to different situations of the number M of terminals and the number N of narrowband frequency points:
(1) when the M < ﹦ N, corresponding narrow-band frequency points are allocated to each terminal, and the narrow-band frequency points of each terminal are unique, so that interference cannot be generated during communication between the terminals;
(2) when M is greater than N, the condition that a plurality of terminals share one frequency point can occur, at the moment, the same frequency point needs to be distributed for the plurality of terminals, and the distribution basis is to ensure that the communication between the terminals cannot generate interference.
In the embodiment of the invention, when two adjacent terminals are separated by a distance of two or more hops, the two terminals do not generate interference in communication.
Based on this, when M > N, in order to avoid interference in communication, different frequency points are allocated to terminals that are separated by a distance within two hops between two adjacent terminals, so as to ensure that the terminals avoid interference.
In addition, for the terminals which are adjacent to each other and have a distance of two or more hops, because the terminals do not generate communication interference, a certain number of terminals are screened out from the terminals, the same frequency points are distributed to the terminals, and no interference is generated among the terminals.
Further, when the following conditions are satisfied, the two terminals do not interfere with each other: two adjacent terminals are separated by two or more than two hops; the distance of the two hops is twice the distance that two terminals in narrow-band communication can directly communicate.
Step S3, the narrow-band communication module of each terminal monitors each narrow-band frequency point, and if it is monitored that some narrow-band frequency point has data information, the data information on the narrow-band frequency point is received; the broadband communication module monitors each broadband channel, and receives data information if the broadband channel is monitored to have the data information; the data information carries a destination address.
Step S4, each terminal compares the destination address in the received data information with its own address, and when the destination address is the terminal' S own address, the data information is decoded and played; the data information is not operated when the destination address is not the terminal's own address.
Further, step S5 is included, when two terminals are communicating, and other terminals need to send narrowband data information to the communicating terminal, the two terminals that send data first do not interrupt the communication, and the other terminals do not delay the sending and directly send data information. Further, when a receiving terminal in communication receives narrowband data information sent by other terminals, if the communication of sending data is carried out through a broadband, the narrowband module is used for directly receiving the narrowband data information; if the communication of sending data is carried out through narrow band, narrow band information of a plurality of different sending ends is received through a narrow band module, then information of different frequency points is filtered out through filtering waves, and the information filtered out through the frequency points is the information sent by the sending end corresponding to the frequency points.
As shown in fig. 3, in an example of the present invention, the system allocates 9 different narrowband frequency points to terminals 1 to 9, that is, N is 9, at this time, the number M of terminals is 9, the terminal is a terminal capable of adaptively switching wideband and narrowband communications in the embodiment, the 9 narrowband channels are not overlapped with each other, and the narrowband communication module and the wideband communication module of each terminal monitor the 9 narrowband channels and the wideband channel of the system respectively.
If the terminal 6 has a voice message to be sent to the terminal 1, and the content of the voice message is smaller than the switching bandwidth threshold value of 12.5Kb, the terminal 6 sends the voice message by using a self narrowband communication module and using a narrowband frequency point distributed by the terminal 6, wherein the voice message is accompanied with a destination address as the ID of the terminal 1, when the terminal 5 and the terminal 7 receive the message, the terminal is checked that the destination terminal is not self, the voice data is not operated in the next step, and only the terminal 1 carries out further voice decoding and playing; if the terminal 1 is receiving the messages sent by other terminals at this time, the terminal 1 will not interrupt the previous reception, and the terminal 6 will not delay the sending, the terminal 1 will receive all the messages, and then filter out the messages of different frequency points, the messages filtered out by the frequency points are the messages sent by the sending end corresponding to the frequency points.
If the terminal 9 has a video message to send to the terminal 8, and the content of the message is greater than 12.5Kb, the terminal 9 will send the video message through a broadband, and the specific scheduling manner depends on the broadband network, such as an LTE network, a 3G network, and the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A system capable of adaptively switching broadband and narrowband communication is characterized by comprising a plurality of terminals for adaptively switching broadband and narrowband communication, a narrowband frequency point distribution module, a plurality of narrowband channels and one or more broadband channels; the narrowband frequency point allocation module is used for allocating narrowband frequency points for each terminal, and the bandwidths of the narrowband frequency points are not overlapped with each other; each narrow-band frequency point corresponds to a narrow-band channel; when the narrowband frequency point distribution module distributes narrowband frequency points, and when the number of terminals is less than that of the narrowband frequency points, different frequency points are distributed to different terminals; when the number of the terminals is more than that of the narrow-band frequency points, distributing the same frequency points for the terminals which can not generate interference in communication, wherein the terminals which can not generate interference are two or more hops away from each other, and the distance of the two hops is twice the distance which can be directly communicated by the two terminals in narrow-band communication;
the narrow-band channel and the broadband channel are used for mutual communication between terminals, and the broadband channel and the narrow-band frequency point are not overlapped;
each terminal for adaptively switching the broadband and narrowband communication comprises: the system comprises a self-adaptive switching module, a control module, a power supply module, a narrow-band communication module and a broadband communication module;
the power supply module is connected with the control module, and the control module provides working voltage for the self-adaptive switching module, the control module, the narrow-band communication module and the broadband communication module;
the control module is used for presetting a switching bandwidth threshold of the self-adaptive switching module, the threshold is the maximum transmission rate of the narrow-band communication module, and the working voltage from the power supply module is used for respectively driving the self-adaptive switching module, the narrow-band communication module and the broadband communication module;
the self-adaptive switching module judges whether the size of the data to be sent is larger than the switching bandwidth threshold value or not according to the size of the data to be sent; if the size of the data to be sent is smaller than the switching bandwidth threshold, the self-adaptive switching module automatically selects the narrow-band communication module to send the data to be sent; when the size of the data to be sent is larger than or equal to the switching bandwidth threshold value, the self-adaptive switching module automatically selects the broadband communication module to send the data to be sent;
the narrow-band communication module is used for sending and receiving information on a narrow band; the narrow-band communication module is used for monitoring each narrow-band frequency point, and receiving data information on the narrow-band frequency point if the narrow-band frequency point with the data information is monitored;
the broadband communication module is used for sending and receiving information on broadband; the broadband communication module is used for monitoring each broadband channel, and receiving data information if the broadband channel with the data information is monitored; the data information of the narrow-band frequency point and the broadband channel carries a destination address;
each terminal compares a destination address in the received data information with a self address, and when the destination address is the self address of the terminal, the data information is operated; when the destination address is not the self address of the terminal, the data information is not operated;
when two terminals are communicating, if other terminals need to send narrow-band data information to the communicating terminal, the two terminals which send data firstly do not interrupt communication, and the other terminals do not delay the sending and directly send the data information;
when the communication terminal receiving terminal receives the narrow-band data information sent by other terminals, if the communication of sending data is carried out through the wide band, the narrow-band data information is directly received through the narrow-band module; if the communication of sending data is carried out through narrow band, narrow band information of a plurality of different sending ends is received through a narrow band module, then information of different frequency points is filtered out through filtering waves, and the information filtered out through the frequency points is information sent by the sending end corresponding to the frequency points.
2. The system capable of adaptively switching narrowband communications according to claim 1, wherein the terminal capable of adaptively switching narrowband communications further comprises at least a satellite positioning module, a video module, a voice module, a display module connected to the control module;
the video module is used for shooting and generating pictures and videos of the terminal, and coding and decoding the pictures and the videos;
the voice module is used for recording and playing the sound received by the terminal, and coding and decoding the sound;
the satellite positioning module is used for positioning the terminal;
the display module is used for displaying and playing the multimedia information of the terminal.
3. The system of claim 1, wherein the handover bandwidth threshold is in a range of 7.5Kb to 128 Kb.
4. A method for adaptively switching narrowband communication, which is applied to the system for adaptively switching narrowband communication according to any one of claims 1 to 3, and comprises the following steps:
step S1, setting N narrow-band frequency points in the system, wherein the bandwidths of the frequency points are not overlapped; presetting one or more broadband channels, wherein the broadband channels and the narrowband frequency points are not overlapped;
step S2, the narrow-band frequency point distribution module distributes different narrow-band frequency points set in step 1 for each terminal of the self-adaptive switching wide-band and narrow-band communication;
step S3, the narrow-band communication module of each terminal monitors each narrow-band frequency point, if the narrow-band frequency point with data information is monitored, the data information on the narrow-band frequency point is received; the broadband communication module monitors each broadband channel, and receives data information if the broadband channel is monitored to have the data information; the data information carries a destination address;
step S4, each terminal compares the destination address in the received data information with its own address, and when the destination address is the terminal' S own address, the data information is operated; the data information is not operated when the destination address is not the terminal's own address.
5. The method according to claim 4, wherein in step S2, the number of terminals in the system is preset to be M, and when the number M of terminals is less than the number N of narrowband frequency points, different frequency points are allocated to different terminals; when the number M of the terminals is more than the number N of the narrow-band frequency points, the same frequency points are distributed for the terminals which can not generate interference in communication; when the following conditions are met, the two terminals cannot generate interference in communication:
two adjacent terminals are separated by two or more than two hops; the distance of the two hops is twice the distance that two terminals in narrow-band communication can directly communicate.
6. The method of adaptively switching narrowband communications according to claim 4, further comprising step S5; when two terminals are communicating, and other terminals need to send narrow-band data information to the communicating terminals, the two terminals which send data first do not interrupt communication, and the other terminals do not delay the sending and directly send data information.
7. The method for adaptively switching narrowband and wideband communication according to claim 6, wherein in step S5, when the receiving terminal in communication receives narrowband data information sent from other terminals, if the communication that sent data first is performed through wideband, the narrowband module directly receives the narrowband data information; if the communication of sending data is carried out through narrow band, narrow band information of a plurality of different sending ends is received through a narrow band module, then information of different frequency points is filtered out through filtering waves, and the information filtered out through the frequency points is the information sent by the sending end corresponding to the frequency points.
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| CN201710797783.4A CN107708167B (en) | 2017-09-06 | 2017-09-06 | Terminal, system and communication method capable of adaptively switching wide-band and narrow-band communication |
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| CN109495586B (en) * | 2018-12-21 | 2022-01-28 | 云南电网有限责任公司电力科学研究院 | Communication method, terminal and system of Internet of things heterogeneous wireless network |
| CN113038532B (en) * | 2019-12-24 | 2023-01-31 | 成都鼎桥通信技术有限公司 | Data transmission method, device, equipment, system and storage medium |
| CN113133062B (en) * | 2019-12-30 | 2022-05-17 | 大唐移动通信设备有限公司 | Inter-satellite switching method and device, terminal and network side equipment |
| CN113271550A (en) * | 2020-02-17 | 2021-08-17 | 普天信息技术有限公司 | Method and device for triggering working mode of multimode converged cluster terminal |
| CN111885355A (en) * | 2020-07-21 | 2020-11-03 | 深圳市资福医疗技术有限公司 | Communication method of capsule endoscope |
| CN112468323B (en) * | 2020-11-10 | 2021-12-17 | 南京大学 | Broadband and narrowband integrated communication equipment and system |
| CN112637787B (en) * | 2020-12-10 | 2022-05-17 | 海能达通信股份有限公司 | Communication method, device, equipment and storage medium |
| CN113660706A (en) * | 2021-09-14 | 2021-11-16 | 希诺麦田技术（深圳）有限公司 | Ad hoc network communication system, ad hoc network communication method, mobile terminal, and computer storage medium |
| CN116233032B (en) * | 2023-03-02 | 2023-10-20 | 深圳市中创鑫和科技有限公司 | Broadband narrowband fusion networking system and method |
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| CN105592504B (en) * | 2014-10-23 | 2019-03-08 | 东莞宇龙通信科技有限公司 | Transmission method, transmitting device and the terminal of more wifi modules |
| CN104602200B (en) * | 2015-01-26 | 2017-11-28 | 清华大学 | A kind of fusion method of arrowband group service for timesharing long term evolution base station |
| CN206237617U (en) * | 2016-11-23 | 2017-06-09 | 北京坦达信息科技有限公司 | A kind of onboard wireless broadband access terminal |
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| CN106792829A (en) * | 2017-01-10 | 2017-05-31 | 青岛海信移动通信技术股份有限公司 | Lift method, device and the terminal device of terminal WIFI message transmission rates |
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