CN111405574A - Broadband wireless communication method, device, equipment and readable storage medium - Google Patents
Broadband wireless communication method, device, equipment and readable storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The invention discloses a broadband wireless communication method, a device, equipment and a computer readable storage medium; in the scheme, the shared frequency band needs to be divided into a plurality of sub-channels, when a sending end sends data, a target sub-channel for sending the data can be dynamically selected from the shared frequency band, and when a receiving end receives the data, the next frame of data is accurately received according to the type information of the sub-channel in the current frame of data, the frequency point information of the sub-channel and the working center frequency point information of the receiving end until all the data are received, so that the effective transmission of the data is realized, and the anti-interference capability of the data transmission is improved. The invention also discloses broadband wireless communication which can also realize the effects.
Description
Technical Field
The present invention relates to the field of mobile communication system technology, and more particularly, to a broadband wireless communication method, apparatus, device, and computer-readable storage medium.
Background
In recent years, both civil communication and military communication have made greater demands on the transmission capacity of the system, and theories and technologies of broadband wireless communication have been greatly developed, wherein an OFDM (Orthogonal frequency division Multiplexing ) transmission system is the main transmission system thereof, and a MIMO-OFDM (Multiple-Input Multiple-Output Orthogonal frequency division Multiplexing) transmission system is the main transmission system. Referring to fig. 1, which is a model diagram of an OFDM system, data transmitted by the system is processed by channel coding, QAM (Quadrature Amplitude Modulation) mapping, IFFT (Inverse Fast fourier transform, Fast algorithm for Inverse discrete fourier transform), CP (Cyclic Prefix), and the like to obtain an OFDM signal, and then transmitted through a wireless channel. The receiving end firstly carries out synchronization processing on the received signal, estimates and compensates symbol timing and carrier frequency deviation, and then can ensure that the subsequent processes such as QAM demapping, channel decoding and the like are correctly carried out.
With the increase of mass electronic devices, the electromagnetic environment in which communication devices work at present is more and more complex, and the available frequency bands exhibit the characteristics of discontinuous distribution, non-uniformity, unstable duration and the like, so that improvement of the adaptability of communication devices in the complex electromagnetic environment, in particular, a broadband wireless communication system, is urgently needed. Particularly, the occupied bandwidth is wide, so that the method is more easily influenced by interference, and the improvement of the adaptive capacity of the method in a complex electromagnetic environment is particularly urgent. Therefore, how to improve the interference rejection capability of the wireless communication system is a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a broadband wireless communication method, a broadband wireless communication device, broadband wireless communication equipment and a computer-readable storage medium, so that the anti-interference capability of a wireless communication system is improved.
In order to achieve the above object, the present invention provides a broadband wireless communication method, where the broadband wireless communication method is based on a transmitting end of a wireless communication system, and the method includes:
setting the waveform channel into a plurality of independent sub-channels, and determining sub-channel bandwidths of the independent sub-channels;
dividing the shared frequency band into integer sub-channels by taking the sub-channel bandwidth as a basic unit;
dynamically selecting a target sub-channel from the shared frequency band, and transmitting data to a receiving end through the target sub-channel so that the receiving end receives next frame data according to control information of current frame data received from the target sub-channel, thereby realizing data communication between the transmitting end and the receiving end; the control information includes: the method comprises the following steps of obtaining the type information of a subchannel, the frequency point information of the subchannel and the working center frequency point information of a receiving end; the type information includes an active subchannel and an inactive subchannel.
Wherein each sub-channel uses a separate control channel for transmitting control information.
Wherein the dynamically selecting a target sub-channel from the shared frequency band comprises:
dynamically selecting an effective sub-channel and an ineffective sub-channel from the waveform channel bandwidth of the shared frequency band; the effective sub-channel is used for transmitting effective data, and the ineffective sub-channel is used for transmitting ineffective data.
Wherein, this scheme still includes:
judging whether the frequency spectrum interval of the shared frequency band is larger than a preset threshold value or not; if yes, sending data by adopting a multi-carrier aggregation mode, and if not, sending data by adopting a direct aggregation mode.
Wherein the dynamically selecting a target sub-channel from the shared frequency band comprises:
dynamically selecting an effective sub-channel from the waveform channel bandwidth of the shared frequency band, and dynamically selecting an interference sub-channel from other bandwidths of the shared frequency band except the waveform channel bandwidth; the effective sub-channel is used for transmitting effective data, and the interference sub-channel is used for transmitting interference data.
To achieve the above object, the present invention further provides a broadband wireless communication apparatus based on a transmitting end of a wireless communication system, comprising:
the subchannel broadband determination module is used for setting the waveform channel into a plurality of independent subchannels and determining the subchannel bandwidth of the independent subchannels;
a sub-channel dividing module, configured to divide the shared frequency band into integer sub-channels by using the sub-channel bandwidth as a basic unit;
a sub-channel selection module, configured to dynamically select a target sub-channel from the shared frequency band;
the data transmission module is used for transmitting data to a receiving end through a target sub-channel so that the receiving end receives next frame data according to the control information of the current frame data received from the target sub-channel, and data communication between the transmitting end and the receiving end is realized; the control information includes: the method comprises the following steps of obtaining the type information of a subchannel, the frequency point information of the subchannel and the working center frequency point information of a receiving end; the type information includes an active subchannel and an inactive subchannel.
Wherein the sub-channel selection module comprises:
the first selection module is used for dynamically selecting an effective sub-channel and an ineffective sub-channel from the waveform channel bandwidth of the shared frequency band; the effective sub-channel is used for transmitting effective data, and the ineffective sub-channel is used for transmitting ineffective data.
Wherein the sub-channel selection module comprises:
a second selection module, configured to dynamically select an effective sub-channel from the waveform channel bandwidth of the shared frequency band, and dynamically select an interference sub-channel from other bandwidths of the shared frequency band except the waveform channel bandwidth; the effective sub-channel is used for transmitting effective data, and the interference sub-channel is used for transmitting interference data.
To achieve the above object, the present invention further provides an electronic device comprising:
a memory for storing a computer program; a processor for implementing the steps of the above-described broadband wireless communication method when executing the computer program.
To achieve the above object, the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when being executed by a processor, implements the steps of the above-mentioned broadband wireless communication method.
As can be seen from the above solutions, a broadband wireless communication method provided in an embodiment of the present invention, where the communication method is based on a sending end of a wireless communication system, includes: setting the waveform channel into a plurality of independent sub-channels, and determining sub-channel bandwidths of the independent sub-channels; dividing the shared frequency band into integer sub-channels by taking the sub-channel bandwidth as a basic unit; dynamically selecting a target sub-channel from the shared frequency band, and transmitting data to a receiving end through the target sub-channel so that the receiving end receives next frame data according to control information of current frame data received from the target sub-channel, thereby realizing data communication between the transmitting end and the receiving end; the control information includes: the type information of the sub-channel, the frequency point information of the sub-channel and the working center frequency point information of the receiving end.
Therefore, in the scheme, the shared frequency band needs to be divided into a plurality of sub-channels, when a sending end sends data, a target sub-channel for sending the data can be dynamically selected from the shared frequency band, and when a receiving end receives the data, the next frame of data is accurately received according to the type information of the sub-channels in the current frame of data, the frequency point information of the sub-channels and the working center frequency point information of the receiving end until all the data are received, so that the effective transmission of the data is realized, and the anti-interference capability of the data transmission is improved. The invention also discloses a broadband wireless communication device, equipment and a computer readable storage medium, which can also realize the effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a diagram of an OFDM system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a broadband wireless communication method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a OFDM waveform channel bandwidth subchannel division model disclosed in the embodiment of the present invention;
FIG. 4 is a schematic diagram of an independent control channel design model according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a sub-channel division model of a radio frequency front end operating frequency band disclosed in the embodiment of the present invention;
fig. 6 is a schematic diagram of a link adaptive application model based on an autonomous frequency selection mechanism according to an embodiment of the present invention;
fig. 7a is a schematic diagram of a transmitting end of a broadband wireless autonomous frequency selection communication model based on an OFDM transmission system disclosed in an embodiment of the present invention;
fig. 7b is a schematic diagram of a simulation filtering of a broadband wireless autonomous frequency-selective communication model based on an OFDM transmission system according to an embodiment of the present invention;
fig. 7c is a schematic diagram of low-speed sampling of a broadband wireless autonomous frequency-selective communication model based on an OFDM transmission system according to an embodiment of the present invention;
fig. 7d is a schematic signal demodulation diagram of a broadband wireless autonomous frequency selection communication model based on an OFDM transmission system according to an embodiment of the present invention;
fig. 8 is a diagram of a wideband autonomous frequency selection receiving and transmitting synchronization mechanism disclosed in the embodiment of the present invention;
FIG. 9 is a schematic diagram of a representation of a frequency-selective control word according to an embodiment of the present invention
Fig. 10 is a schematic diagram of an interference avoidance application model based on an autonomous frequency selection mechanism according to an embodiment of the present invention;
fig. 11 is a block diagram of a direct broadband aggregation at a transmitting end according to an embodiment of the present invention;
fig. 12 is a sending end multi-carrier aggregation block diagram disclosed in the embodiment of the present invention
Fig. 13 is a communication interference integration application model based on an autonomous frequency selection mechanism according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of a broadband wireless communication device according to an embodiment of the present invention;
fig. 15 is a schematic view of an electronic device according to an embodiment of the disclosure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In current wireless communication systems, spread spectrum technology is the most widely and mature anti-interference technology. The spread spectrum anti-interference technology generally comprises a direct spread spectrum mode and a frequency hopping mode, and the anti-interference principle is that signals are spread on a frequency domain, the power density of the signals is reduced, and target signals are hidden in interference signals and noise, so that the adaptability of a system to interference is improved. However, for the wireless broadband communication system, since the spread spectrum technology occupies a high bandwidth and spectrum resources, and the current spectrum resources are limited, it is difficult to have a sufficient bandwidth to provide frequency hopping and spread spectrum gain to meet the requirement of interference resistance.
Furthermore, since interference exhibits fragmented distribution characteristics in time, space, frequency, etc. multiple domains, and such distribution characteristics tend not to be fast time-varying (non-competing environments). The autonomous frequency-selective communication technology introduces the idea of opportunistic spectrum access. The method regards a sub-frequency band without interference or with interference power lower than a threshold value in a system working frequency band as a 'frequency spectrum hole', and two communication parties sense and predict the specific position of the frequency spectrum hole in the working frequency band in real time and interact frequency spectrum hole information through signaling. The receiving end informs the sender of dynamically adjusting the working frequency or other communication parameters according to the noise change condition in the local 'frequency spectrum hole', so that the influence of interference on the system performance is minimized while the receiving performance requirement is met, and the anti-interference capability of the system is greatly improved. Therefore, autonomous frequency selection is an important means for improving the anti-interference capability of the broadband wireless communication equipment.
The embodiment of the invention discloses a broadband wireless communication method, a device, equipment and a computer readable storage medium, which are used for improving the reliable transmission capability of a wireless communication system.
Referring to fig. 2, a broadband wireless communication method provided in an embodiment of the present invention is based on a sending end of a wireless communication system, and includes:
s101, setting a waveform channel into a plurality of independent sub-channels, and determining sub-channel bandwidths of the independent sub-channels;
it should be noted that the broadband wireless communication method described in this embodiment may be applied to a broadband wireless communication system such as OFDM or MIMO-OFDM, and the description is given only by taking a broadband autonomous frequency selection system of an OFDM system as an example.
Before communication, the waveform channel is firstly set to be a plurality of independent sub-channels, and the sub-channel bandwidth of the independent sub-channels is determined. Referring to fig. 3, a schematic diagram of a OFDM waveform channel bandwidth subchannel division model disclosed in the embodiment of the present invention is shown; as shown in fig. 3, the bandwidth of the waveform channel of the wideband autonomous frequency selection system of the OFDM system is
The OFDM system adopts
Sub-carriers, on the basis of which the channel bandwidth is divided into
A separate sub-channel, each channel then occupies
A sub-carrier, and
the sub-channel bandwidth is
. Specifically, each sub-channel in the present application is independent of each otherNamely: each subchannel uses a separate control channel for transmitting control information. Referring to fig. 4, which is a schematic diagram of an independent control channel design model disclosed in the embodiment of the present invention, it can be seen from the diagram that each subchannel transmits a control segment through the subchannel when transmitting a data segment, the control segment records control information, and the control segments transmitted between different subchannels are transmitted through separate subchannels.
S102, dividing a shared frequency band into integer sub-channels by taking the sub-channel bandwidth as a basic unit;
specifically, after determining the sub-channel bandwidth, the shared frequency band needs to be divided into an integer number of sub-channels by using the sub-channel bandwidth as a basic unit. Referring to fig. 5, a schematic diagram of a sub-channel division model of a radio frequency front end working frequency band disclosed in the embodiment of the present invention is shown, where if a bandwidth of a shared frequency band of a radio frequency front end of a hardware platform (communication device) is equal to
The lowest operating frequency is
The highest working frequency is
This means that signals in the operating frequency range of the rf front-end can be normally received or transmitted by configuring parameters such as the appropriate operating center frequency and the bandwidth of the analog filter. Therefore, in the present application, the sub-channel bandwidth of the waveform of the OFDM system is used as a basic unit to divide the bandwidth of the rf front end into two parts
Sub-channels, numbering sub-channels as
Assuming central operation of the radio frequency front endFrequency point is
If the center frequency point of the mth sub-channel is
. The method for acquiring each parameter is as follows:
number of shared band subchannels:
；
the working center frequency point of the sending terminal:
；
subchannel numbering:
；
center frequency point of mth subchannel:
。
s103, dynamically selecting a target sub-channel from the shared frequency band, and sending data to a receiving end through the target sub-channel so that the receiving end receives next frame data according to control information of current frame data received from the target sub-channel, and data communication between the sending end and the receiving end is realized; the control information includes: the method comprises the following steps of obtaining the type information of a subchannel, the frequency point information of the subchannel and the working center frequency point information of a receiving end; the type information includes an active subchannel and an inactive subchannel.
It should be noted that, when the radio frequency front end operating frequency band (shared frequency band) is fixed and only the OFDM system waveform channel bandwidth is available (in the case of fixed frequency spectrum division), during data transmission, a target sub-channel may be dynamically selected from the shared frequency band for data transmission. For example, referring to fig. 6, a schematic diagram of a link adaptation application model based on an autonomous frequency selection mechanism is disclosed for the embodiment of the present invention. The conventional link adaptation model dynamically selects Modulation and Coding Schemes (MCS) with different transmission efficiencies and performances according to time-varying channel conditions, and the main research content of the conventional link adaptation model is to optimize an MCS switching threshold so as to obtain the maximum throughput. Different from the traditional link self-adaptive model, the MCS with different transmission efficiency and performance can be dynamically selected according to the time-varying channel and interference condition in the model, and the number of the sub-channels and the distribution of the sub-channels can be dynamically selected to obtain the maximum throughput.
Therefore, in the present application, the wideband OFDM waveform channel is designed as a plurality of independent sub-channels, and after the shared frequency band is divided into integer sub-channel bandwidths by using the wideband OFDM waveform sub-channel bandwidth as a basic unit, the sending end needs to dynamically select a "time-frequency hole" exceeding a certain sinr threshold according to the channel and interference conditions to send effective information, that is: the method and the device dynamically select the target sub-channel from the time-frequency hole of the shared frequency band. Fig. 7a, 7b, 7c, and 7d are schematic diagrams of a broadband wireless autonomous frequency-selective communication model based on an OFDM transmission system according to an embodiment of the present invention; it can be seen that fig. 7a first determines an effective communication wideband from the shared bandwidth, where the effective communication wideband is an OFDM waveform channel bandwidth, then fig. 7b determines a target sub-channel for transmitting data from the effective communication wideband for data transmission, where the target sub-channel is a front-end analog filtering bandwidth and indicates a working center frequency, and fig. 7c and 7d are diagrams illustrating a self-service frequency selection system with complexity that can be implemented by low-speed sampling, so as to implement reliable transmission of data.
It can be understood that, the core problem of the broadband autonomous frequency selection communication system is to implement synchronization between the transmitting end and the receiving end, and in the present application, when the autonomous frequency selection mechanism of the present application is used to implement integrated application of interference avoidance and interference elimination, the operating center frequencies of the transmitting end and the receiving end are no longer consistent, so in the present application, the receiving end and the transmitting end synchronization mechanism shown in fig. 8 are provided. In the initial stage of the mechanism, a receiving end works by adopting a default initial frequency point, a sending end periodically sends a synchronous frame, and the working frequency point of the synchronous frame receiving end is a default value. In the communication cycle stage, the frequency selection control word in the control information of the previous frame data provides the frequency information such as the central working frequency point of the receiving end of the next frame.
Fig. 9 is a schematic representation diagram of a frequency selection control word disclosed in the embodiment of the present invention; it can be seen from the figure that the frequency selection control word in the control information includes three parts of information, one is type information of the OFDM waveform subchannel, i.e. whether the OFDM waveform subchannel is an effective subchannel (communication subchannel) or an ineffective subchannel (interference subchannel), the part of information needs N bits for representation, and the other is frequency point information of the subchannel or frequency point distribution, the part of information is represented by the number of the subchannel and the central working frequency point of the transmitting end (the central working frequency point of the transmitting end is a default value), therefore, the part of information needs to be represented by the number of the subchannel and the central working frequency point of the transmitting
Bit information is represented. Thirdly, the frequency point information of the work center of the receiving end, which can also be expressed by the number of the sub-channel and needs to be expressed
Bit information. Therefore, when a receiving end receives data, the distribution of dynamically selected sub-channels and sub-channels during data transmission can be known according to control information, the out-of-band interference is filtered by selecting the working center frequency and combining with the analog filtering of the broadband OFDM waveform channel bandwidth, and the interference blockage is prevented.
In this embodiment, dynamically selecting a target sub-channel from the shared frequency band includes:
dynamically selecting an effective sub-channel and an ineffective sub-channel from the waveform channel bandwidth of the shared frequency band; the effective sub-channel is used for transmitting effective data, and the ineffective sub-channel is used for transmitting ineffective data;
or, dynamically selecting an effective sub-channel from the waveform channel bandwidth of the shared frequency band, and dynamically selecting an interference sub-channel from other bandwidths of the shared frequency band except the waveform channel bandwidth; the effective sub-channel is used for transmitting effective data, and the interference sub-channel is used for transmitting interference data.
This scheme still includes: judging whether the frequency spectrum interval of the shared frequency band is larger than a preset threshold value or not; if yes, sending data by adopting a multi-carrier aggregation mode, and if not, sending data by adopting a direct aggregation mode.
It should be noted that, when the radio frequency front end operating frequency range is wider and much larger than the bandwidth of the waveform channel of the OFDM system, referring to fig. 10, the embodiment of the present invention discloses an interference avoidance application model diagram based on an autonomous frequency selection mechanism. In this model, the rf front-end operating band can be regarded as a shared band, for example, when the communication device operates in an ism (industrial scientific medical band) band, the intensity and spectral distribution of interference in the band may vary according to time. In the interference avoidance application model shown in fig. 10, the sending end uses different wideband aggregation modes according to the size of the shared spectrum interval, when the shared spectrum interval is small, the sending end may use the direct aggregation mode shown in fig. 11, and when the shared spectrum interval is large, if the direct aggregation mode shown in fig. 11 is used again, a high requirement is put forward on the sampling rate of the DA chip. To solve this problem, when the shared spectrum interval is large, the transmitting end employs a multicarrier aggregation scheme as shown in fig. 12. In the interference avoidance application model shown in fig. 10, the central working frequency point of the transmitting end
And the central working frequency point of the receiving end
The signals are not the same, but the receiving end dynamically selects the central frequency point according to the time-varying channel and the interference condition
Interference avoidance is achieved where out-of-band interference suppression is achieved by analog filtering, preventing blocking.
Furthermore, when the radio frequency front end has a wider and far-greater working frequency bandWhen the waveform channel bandwidth of the OFDM system is used, fig. 13 shows a communication interference integration application model based on an autonomous frequency selection mechanism. For example, a military tactical radio station operating in the UHF band not only needs to avoid the interference of the confronted enemies, but also needs to interfere the normal communication of the enemy radio station under possible circumstances, so as to improve the combat efficiency. Under the condition, the central working frequency point of the sending end
And the central working frequency point of the receiving end
The signals are not the same, but the receiving end dynamically selects the central frequency point according to the time-varying channel and the interference condition
Interference avoidance is achieved where out-of-band interference suppression is achieved by analog filtering, preventing blocking. On the other hand, unlike the interference avoidance application model shown in fig. 10, the invalid subchannels are no longer aggregated with the valid subchannels, but the frequency points of the invalid subchannels are dynamically selected according to the communication frequency point distribution of the enemy, so that the invalid subchannels become interference subchannels.
In summary, the present invention provides an autonomous frequency selection method for a broadband wireless communication system, which designs a broadband OFDM waveform channel into a plurality of independent sub-channels, divides a shared frequency band into integer sub-channel bandwidths by using a bandwidth of the broadband OFDM waveform sub-channel as a basic unit, dynamically selects a "time-frequency hole" exceeding a certain sinr threshold at a transmitting end according to channel and interference conditions to transmit effective information, and a receiving end filters out-of-band interference by selecting a working center frequency in combination with analog filtering of the bandwidth of the broadband OFDM waveform channel to prevent interference blocking.
In the following, the communication device provided by the embodiment of the present invention is introduced, and the communication device described below and the communication method described above may be referred to each other.
Referring to fig. 14, an embodiment of the present invention provides a broadband wireless communication apparatus, where the broadband wireless communication apparatus is based on a transmitting end of a wireless communication system, and the broadband wireless communication apparatus includes:
a sub-channel bandwidth determining module 100, configured to set a waveform channel as a plurality of independent sub-channels, and determine sub-channel bandwidths of the independent sub-channels;
a sub-channel dividing module 200, configured to divide the shared frequency band into integer sub-channels by using the sub-channel bandwidth as a basic unit;
a sub-channel selection module 300, configured to dynamically select a target sub-channel from the shared frequency band;
a data sending module 400, configured to send data to a receiving end through a target sub-channel, so that the receiving end receives next frame data according to control information of current frame data received from the target sub-channel, and data communication between the sending end and the receiving end is achieved; the control information includes: the method comprises the following steps of obtaining the type information of a subchannel, the frequency point information of the subchannel and the working center frequency point information of a receiving end; the type information includes an active subchannel and an inactive subchannel.
Wherein each sub-channel uses a separate control channel for transmitting control information.
Wherein the sub-channel selection module comprises:
the first selection module is used for dynamically selecting an effective sub-channel and an ineffective sub-channel from the waveform channel bandwidth of the shared frequency band; the effective sub-channel is used for transmitting effective data, and the ineffective sub-channel is used for transmitting ineffective data.
Wherein, this scheme still includes:
the judging module is used for judging whether the frequency spectrum interval of the shared frequency band is larger than a preset threshold value or not;
the data sending module is specifically configured to: and when the frequency spectrum interval of the shared frequency band is greater than a preset threshold value, sending data by adopting a multi-carrier aggregation mode, otherwise, sending data by adopting a direct aggregation mode.
Wherein the sub-channel selection module comprises:
a second selection module, configured to dynamically select an effective sub-channel from the waveform channel bandwidth of the shared frequency band, and dynamically select an interference sub-channel from other bandwidths of the shared frequency band except the waveform channel bandwidth; the effective sub-channel is used for transmitting effective data, and the interference sub-channel is used for transmitting interference data.
Referring to fig. 15, an electronic device disclosed for an embodiment of the present invention includes:
a memory for storing a computer program;
a processor for implementing the steps of the broadband wireless communication method of the above-mentioned method embodiments when executing the computer program.
In this embodiment, the device may be a PC (Personal Computer), or may be a terminal device such as a smart phone, a tablet Computer, a palmtop Computer, or a portable Computer.
The device may include a memory 11, a processor 12, and a bus 13.
The memory 11 includes at least one type of readable storage medium, which includes a flash memory, a hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, and the like. The memory 11 may in some embodiments be an internal storage unit of the device, for example a hard disk of the device. The memory 11 may also be an external storage device of the device in other embodiments, such as a plug-in hard disk provided on the device, a Smart Memory Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the memory 11 may also include both an internal storage unit of the device and an external storage device. The memory 11 may be used not only to store application software installed in the device and various types of data such as program codes for executing a communication method, etc., but also to temporarily store data that has been output or is to be output.
The processor 12 may be a Central Processing Unit (CPU), controller, microcontroller, microprocessor or other data Processing chip in some embodiments, and is used for executing program codes stored in the memory 11 or Processing data, such as program codes for executing communication methods.
The bus 13 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 15, but this is not intended to represent only one bus or type of bus.
Further, the device may further include a network interface 14, and the network interface 14 may optionally include a wired interface and/or a wireless interface (e.g., WI-FI interface, bluetooth interface, etc.), which are generally used to establish a communication connection between the device and other electronic devices.
Optionally, the device may further comprise a user interface 15, the user interface 15 may comprise a Display (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 15 may also comprise a standard wired interface, a wireless interface, optionally, in some embodiments, the Display may be an L ED Display, a liquid crystal Display, a touch-sensitive liquid crystal Display, an O L ED (Organic L light-Emitting Diode) touch-sensitive device, and the like.
Fig. 15 shows only the device with the components 11-14, and it will be understood by those skilled in the art that the structure shown in fig. 15 does not constitute a limitation of the device, and may comprise fewer or more components than those shown, or some components may be combined, or a different arrangement of components.
The embodiment of the invention also discloses a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the steps of the broadband wireless communication method of the embodiment of the invention are realized.
Wherein the storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A broadband wireless communication method, based on a transmitting end of a wireless communication system, includes:
setting the waveform channel into a plurality of independent sub-channels, and determining sub-channel bandwidths of the independent sub-channels;
dividing the shared frequency band into integer sub-channels by taking the sub-channel bandwidth as a basic unit;
dynamically selecting a target sub-channel from the shared frequency band, and transmitting data to a receiving end through the target sub-channel so that the receiving end receives next frame data according to control information of current frame data received from the target sub-channel, thereby realizing data communication between the transmitting end and the receiving end; the control information includes: the method comprises the following steps of obtaining the type information of a subchannel, the frequency point information of the subchannel and the working center frequency point information of a receiving end; the type information includes an active subchannel and an inactive subchannel.
2. The method of claim 1, wherein each sub-channel uses a separate control channel for transmitting control information.
3. The method of claim 1, wherein the dynamically selecting the target sub-channel from the shared frequency band comprises:
dynamically selecting an effective sub-channel and an ineffective sub-channel from the waveform channel bandwidth of the shared frequency band; the effective sub-channel is used for transmitting effective data, and the ineffective sub-channel is used for transmitting ineffective data.
4. The broadband wireless communication method according to claim 3, further comprising:
judging whether the frequency spectrum interval of the shared frequency band is larger than a preset threshold value or not; if yes, sending data by adopting a multi-carrier aggregation mode, and if not, sending data by adopting a direct aggregation mode.
5. The method of claim 1, wherein the dynamically selecting the target sub-channel from the shared frequency band comprises:
dynamically selecting an effective sub-channel from the waveform channel bandwidth of the shared frequency band, and dynamically selecting an interference sub-channel from other bandwidths of the shared frequency band except the waveform channel bandwidth; the effective sub-channel is used for transmitting effective data, and the interference sub-channel is used for transmitting interference data.
6. A broadband wireless communication apparatus, based on a transmitting end of a wireless communication system, comprising:
the subchannel broadband determination module is used for setting the waveform channel into a plurality of independent subchannels and determining the subchannel bandwidth of the independent subchannels;
a sub-channel dividing module, configured to divide the shared frequency band into integer sub-channels by using the sub-channel bandwidth as a basic unit;
a sub-channel selection module, configured to dynamically select a target sub-channel from the shared frequency band;
the data transmission module is used for transmitting data to a receiving end through a target sub-channel so that the receiving end receives next frame data according to the control information of the current frame data received from the target sub-channel, and data communication between the transmitting end and the receiving end is realized; the control information includes: the method comprises the following steps of obtaining the type information of a subchannel, the frequency point information of the subchannel and the working center frequency point information of a receiving end; the type information includes an active subchannel and an inactive subchannel.
7. The broadband wireless communication apparatus of claim 6, wherein the sub-channel selection module comprises:
the first selection module is used for dynamically selecting an effective sub-channel and an ineffective sub-channel from the waveform channel bandwidth of the shared frequency band; the effective sub-channel is used for transmitting effective data, and the ineffective sub-channel is used for transmitting ineffective data.
8. The broadband wireless communication apparatus of claim 6, wherein the sub-channel selection module comprises:
a second selection module, configured to dynamically select an effective sub-channel from the waveform channel bandwidth of the shared frequency band, and dynamically select an interference sub-channel from other bandwidths of the shared frequency band except the waveform channel bandwidth; the effective sub-channel is used for transmitting effective data, and the interference sub-channel is used for transmitting interference data.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the broadband wireless communication method according to any one of claims 1 to 5 when executing the computer program.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the broadband wireless communication method according to any one of claims 1 to 5.
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