CN107872846A - A kind of data transmission method and device - Google Patents

A kind of data transmission method and device Download PDF

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Publication number
CN107872846A
CN107872846A CN201610859917.6A CN201610859917A CN107872846A CN 107872846 A CN107872846 A CN 107872846A CN 201610859917 A CN201610859917 A CN 201610859917A CN 107872846 A CN107872846 A CN 107872846A
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China
Prior art keywords
channel
bandwidth
idle
big
busy
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CN201610859917.6A
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CN107872846B (en
Inventor
罗俊
张佳胤
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201610859917.6A priority Critical patent/CN107872846B/en
Priority to PCT/CN2017/102231 priority patent/WO2018059272A1/en
Publication of CN107872846A publication Critical patent/CN107872846A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
    • H04W28/0257—Traffic management, e.g. flow control or congestion control per individual bearer or channel the individual bearer or channel having a maximum bit rate or a bit rate guarantee
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/20—Negotiating bandwidth
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies

Abstract

The embodiment of the invention discloses a kind of data transmission method and device, wherein, in the data transmission method, whether the big bandwidth channel that data transmission set can be detected in unauthorized frequency range is idle, the big bandwidth channel is more than 20MHz, less than or equal to the continuous bandwidth channel of the available bandwidth upper limit in the unauthorized frequency range；When detecting the big bandwidth channel free time, can free time big bandwidth channel transmitting data, so as to improve message transmission rate.

Description

A kind of data transmission method and device
Technical field
The present invention relates to communication technical field, and in particular to a kind of data transmission method and device.
Background technology
With the development of mobile Internet and intelligent terminal, data traffic shows the growth trend of explosion type, therefore It is more and more stronger to the demand of unauthorized frequency range.Unauthorized frequency range has higher frequency and bandwidth, can provide higher number According to transmission rate and smaller interference.Unauthorized frequency range includes multiple channels, a width of 20MHz of band of each channel, each channel All it is independent channel, it is abundant so as to be provided for WLAN (Wireless Local Area Networks, WLAN) Channel resource, for multiple independent channels, how bigger bandwidth is provided it is one to improve message transmission rate and urgently solve Certainly the problem of.
The content of the invention
This application discloses a kind of data transmission method and device, can carry out the data transfer of big bandwidth, improve number According to transmission rate.
The application first aspect discloses a kind of data transmission method, and this method can detect non-including data transmission set Authorize the big bandwidth channel in frequency range whether idle, when detecting the big bandwidth channel free time, on the big bandwidth channel of free time Transmit data.Wherein, big bandwidth channel is more than 20MHz, less than or equal to the continuous band of the available bandwidth upper limit in unauthorized frequency range Wide channels, the available bandwidth upper limit can be N times of 20MHz, and N is the integer more than 1, and the available bandwidth upper limit can be according to each State decontrols the frequency band range used to determine to unauthorized frequency range.The embodiment is believed using the big bandwidth of the unauthorized frequency range Road, there is provided the data transfer mode of big bandwidth, improve message transmission rate.
In a possible design, data transmission set can detect adjacent with the idle big bandwidth channel non- It whether there is the channel of at least one idle 20MHz bandwidth in idle big bandwidth channel；If exist at least one idle The channel of 20MHz bandwidth, then in the channel data of at least one idle 20MHz bandwidth.The embodiment can To utilize the scattered idle channel in busy big bandwidth channel, so as to further improve message transmission rate.Wherein, The big bandwidth of the free time can be with busy big with a width of identical bandwidth, to reduce the complexity of Channel Detection.
In second possible design, channel of the data transmission set at least one idle 20MHz bandwidth Transmitting data, Ke Yiwei：In a manner of carrier aggregation on the channel of at least one idle 20MHz bandwidth and institute State and carry out data transmission on the big bandwidth channel of free time.
In the 3rd possible design, data transmission set will be busy in the busy big bandwidth channel The subcarrier zero setting of the channel of 20MHz bandwidth, utilize the busy big bandwidth after the idle big bandwidth channel and zero setting Channel integrally carries out data transmission.
In the 4th possible design, using carrier aggregation and the mode of zero setting the free time big bandwidth channel and The channel data of idle 20MHz bandwidth in busy big bandwidth channel, wherein, utilize the big bandwidth channel of free time It can be with a fast Fourier transform FFT (Fast Fourier integrally to carry out data transmission with busy big bandwidth channel Transformation) the big bandwidth channel in the free time and busy big bandwidth channel transmitting data.
In the 5th possible design, big bandwidth channel of the data transmission set in detection detects unauthorized frequency range is Before the no free time, whether the main channel that can detect 20MHz bandwidth in unauthorized frequency range is idle；If in the unauthorized frequency range The main channel of 20MHz bandwidth is idle, then whether the big bandwidth channel detected in unauthorized frequency range is idle, the main letter of 20MHz bandwidth The road free time can ensure the transmission of system information.
In the 6th possible design, whether the big bandwidth channel that data transmission set is detected in unauthorized frequency range is empty Spare time, including：
Whether the auxiliary channel for detecting the adjacent 20MHz bandwidth of main channel of 20MHz bandwidth is idle；
If the auxiliary channel of 20MHz bandwidth is idle, the adjacent 40MHz bands of the auxiliary channel of the 20MHz bandwidth are detected Whether wide auxiliary channel is idle；
If the auxiliary channel of 40MHz bandwidth is idle, the adjacent 80MHz bands of the auxiliary channel of the 40MHz bandwidth are detected Whether wide auxiliary channel is idle；If the auxiliary channel of 40MHz bandwidth is busy, detect the big bandwidth channel it is idle and Idle big bandwidth channel is the main channel of 40MHz bandwidth；
If the auxiliary channel of 80MHz bandwidth is idle, the idle and idle big bandwidth letter of the big bandwidth channel is detected Road is the main channel of 160MHz bandwidth；If the auxiliary channel of 80MHz bandwidth is busy, detect that the big bandwidth channel is idle And idle big bandwidth channel is the main channel of 80MHz bandwidth.
In the embodiment of the present invention, before carrying out data transmission, whether the big bandwidth channel detected in unauthorized frequency range is empty In the spare time, it is properly termed as carrying out clear channel assessment (CCA) for big bandwidth channel, uses bandwidth from small to large suitable in clear channel assessment (CCA) Sequence is detected, and can improve detection efficiency so that data transmission set efficiently can carry out data using big bandwidth channel Transmission.
In the 7th possible design, whether the big bandwidth channel that data transmission set is detected in unauthorized frequency range is empty Spare time, including：
Whether the channel for detecting 160MHz continuous bandwidths is idle；
If the channel idle of 160MHz continuous bandwidths, the idle and idle big bandwidth letter of the big bandwidth channel is detected Road is 160MHz main channel；
If the channel of 160MHz continuous bandwidths is busy, 80MHz bands in the channel of the 160MHz continuous bandwidths are detected Whether wide main channel and the auxiliary channel of 80MHz bandwidth are idle；
If the main channel of 80MHz bandwidth is idle and the auxiliary channel of 80MHz bandwidth is busy, the big band is detected The idle and idle big bandwidth channel of wide channels is the main channel of 80MHz bandwidth；
If the main channel of 80MHz bandwidth is busy and the auxiliary channel of 80MHz bandwidth is idle, the big band is detected The idle and idle big bandwidth channel of wide channels is the auxiliary channel of 80MHz bandwidth；
If the main channel of 80MHz bandwidth and the auxiliary channel of 80MHz bandwidth are busy, the 80MHz bands are detected Whether the auxiliary channel of the main channel of 40MHz bandwidth and 40MHz bandwidth is idle in wide main channel；
If the main channel of 40MHz bandwidth is idle and the auxiliary channel of 40MHz bandwidth is busy, the big band is detected The idle and idle big bandwidth channel of wide channels is the main channel of 40MHz bandwidth；
If the main channel of 40MHz bandwidth is busy and the auxiliary channel of 40MHz bandwidth is idle, the big band is detected The idle and idle big bandwidth channel of wide channels is the auxiliary channel of 40MHz bandwidth.
The embodiment is detected in clear channel assessment (CCA) using bandwidth order from big to small, improves detection effect Rate so that data transmission set efficiently can be carried out data transmission using big bandwidth channel.
In the 8th possible design, data transmission set can the history interference value based on channel, it is determined that be use It is above-mentioned from small bandwidth to the Channel Detection of big bandwidth order, or it is above-mentioned from big bandwidth to the Channel Detection of small bandwidth order, i.e., Determine whether history interference value is more than predetermined threshold value, if being more than predetermined threshold value, perform it is above-mentioned using above-mentioned from small bandwidth to big The Channel Detection order of bandwidth；If being less than or equal to predetermined threshold value, perform above-mentioned from big bandwidth to the inspection of the channel of small bandwidth Survey order.In the embodiment, history interference value is smaller, illustrates that the idle probability of big bandwidth channel is higher, thus using from Small Channel Detection order is arrived greatly；Illustrate that the idle probability of big bandwidth channel is smaller when history interference value is bigger, therefore adopt With Channel Detection from small to large sequentially, so as to improve the efficiency of Channel Detection.
The application second aspect also discloses a kind of data transmission device, and the data transmission device can include performing this Shen Please data transmission method disclosed in first aspect module.Wherein, detection module is used to detect the big bandwidth in unauthorized frequency range Whether channel is idle, and the big bandwidth channel is more than 20MHz, less than or equal to the available bandwidth upper limit in the unauthorized frequency range Continuous bandwidth channel；Transport module be used for when the detection module detects the big bandwidth channel free time, free time it is big Bandwidth channel transmitting data.
In the application, whether the big bandwidth channel that data transmission set can be detected in unauthorized frequency range is idle, is detecting During to the big bandwidth channel free time, can free time big bandwidth channel transmitting data, so as to improve message transmission rate.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings Obtain other accompanying drawings.
Fig. 1 is a kind of schematic diagram of the unauthorized multiple independent channels of frequency range disclosed in the embodiment of the present invention；
Fig. 2 is a kind of schematic flow sheet of data transmission method disclosed in the embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of channel estimating order disclosed in the embodiment of the present invention；
Fig. 4 is the schematic diagram of another channel estimating order disclosed in the embodiment of the present invention；
Fig. 5 is the schematic flow sheet of another data transmission method disclosed in the embodiment of the present invention；
Fig. 6 is the schematic diagram of another channel assessment result disclosed in the embodiment of the present invention；
Fig. 7 is the schematic diagram of another channel assessment result disclosed in the embodiment of the present invention；
Fig. 8 is the schematic diagram of another channel assessment result disclosed in the embodiment of the present invention；
Fig. 9 is the schematic diagram of another channel assessment result disclosed in the embodiment of the present invention；
Figure 10 is a kind of structural representation of data transmission device disclosed in the embodiment of the present invention；
Figure 11 is a kind of structural representation of data transmission set disclosed in the embodiment of the present invention.
Embodiment
For the ease of understanding the embodiment of the present invention, first the application scenarios of the embodiment of the present invention are described below.Fig. 1 is A kind of schematic diagram of the unauthorized multiple independent channels of frequency range disclosed in the embodiment of the present invention, as shown in figure 1, each channel is only Vertical channel and with a width of 20MHz, abundant channel resource is provided for WLAN, can be by multiple channels using channel bonding technique Channel is bound into use, the channel after the binding is properly termed as big bandwidth channel, i.e., big bandwidth channel be more than 20MHz, Less than or equal to the continuous bandwidth channel of the available bandwidth upper limit in unauthorized frequency range, the available bandwidth upper limit can be 20MHz N Times, N is integer more than 1, the available bandwidth upper limit unauthorized frequency range can be decontroled according to various countries the frequency band range used come It is determined that the embodiment of the present invention is illustrated using the available bandwidth upper limit as 160MHz.In the embodiment of the present invention, main channel is acquiescence Or preferred transmission channel, or the transmission channel comprising system information, auxiliary channel then refer to the biography outside main channel Defeated channel.
Data transmission method disclosed in the embodiment of the present invention and device can use the big bandwidth channel of the unauthorized frequency range, The data transfer of big bandwidth is provided, to improve message transmission rate.It is described in detail individually below.
Referring to Fig. 2, Fig. 2 is a kind of schematic flow sheet of data transmission method disclosed in the embodiment of the present invention, such as Fig. 2 institutes Show, the data transmission method comprises the following steps：
Whether the big bandwidth channel that S201, data transmission set are detected in unauthorized frequency range is idle, when detecting big bandwidth During channel idle, step S202 is performed；When detecting that big bandwidth channel is busy, terminate this flow.
S202, data transmission set are in idle big bandwidth channel transmitting data.
In the embodiment of the present invention, the terminal that performs the data transmission method can be the mobile phone of user side, tablet personal computer, just The base station equipment of the user equipmenies such as portable device or base station side, collectively referred to here in as data transmission set.
In the embodiment of the present invention, before data transmission set carries out data transmission, it is necessary to perform detected in step S201 it is non- Authorize the big bandwidth channel in frequency range whether idle, i.e., carry out clear channel assessment (CCA), the channel estimating side for big bandwidth channel Method can include two kinds of embodiments, be elaborated as follows.
As an alternative embodiment, referring to Fig. 3, Fig. 3 is a kind of channel estimating disclosed in the embodiment of the present invention The schematic diagram of order, with reference to Fig. 3, whether the big bandwidth channel that data transmission set is detected in unauthorized frequency range is idle, can wrap Include following steps：
11) whether the auxiliary channel of the adjacent 20MHz bandwidth of the main channel of data transmission set detection 20MHz bandwidth is empty It is not busy；
If 12) auxiliary channel of 20MHz bandwidth is idle, data transmission set detects the auxiliary channel of the 20MHz bandwidth Whether the auxiliary channel of adjacent 40MHz bandwidth is idle；
Optionally, if the auxiliary channel of 20MHz bandwidth is busy, the main channel of 20MHz bandwidth can be used to enter line number According to transmission, the mode of main channel transmission data is single channel transmission, and I will not elaborate.
If 13) auxiliary channel of 40MHz bandwidth is idle, data transmission set detects the auxiliary channel of the 40MHz bandwidth Whether the auxiliary channel of adjacent 80MHz bandwidth is idle；If the auxiliary channel of 40MHz bandwidth is busy, data transmission set Detect the main channel that the idle and idle big bandwidth channel of big bandwidth channel is 40MHz bandwidth；
Wherein, data transmission set detects that the idle and idle big bandwidth channel of big bandwidth channel is 40MHz bandwidth During main channel, the main channel of the 40MHz bandwidth is as shown in figure 3, data transmission set can be in the main channel of the 40MHz bandwidth Transmit data.
If 14) auxiliary channel of 80MHz bandwidth is idle, data transmission set detects that big bandwidth channel is idle and idle Big bandwidth channel be 160MHz bandwidth main channel；If the auxiliary channel of 80MHz bandwidth is busy, data transmission set inspection Measure the main channel that the idle and idle big bandwidth channel of big bandwidth channel is 80MHz bandwidth.
In the embodiment of the present invention, data transmission set detects that big bandwidth channel is idle and idle big bandwidth channel is During the main channel of 160MHz bandwidth, the main channel of the 160MHz bandwidth is as shown in figure 3, data transmission set can be in the 160MHz The main channel transmitting data of bandwidth.Alternatively, data transmission set detects the idle and idle big bandwidth of big bandwidth channel When channel is the main channel of 80MHz bandwidth, the main channel of the 80MHz bandwidth is as shown in figure 3, data transmission set can be at this The main channel transmitting data of 80MHz bandwidth.
The embodiment can be directed to big bandwidth channel and be detected using bandwidth order from small to large, improve detection effect Rate so that data transmission set efficiently can be carried out data transmission using big bandwidth channel.
As another optional embodiment, referring to Fig. 4, Fig. 4 is another channel disclosed in the embodiment of the present invention The schematic diagram of assessment order, with reference to the Fig. 4, whether the big bandwidth channel that data transmission set is detected in unauthorized frequency range is idle, It may comprise steps of：
21) whether the channel of data transmission set detection 160MHz continuous bandwidths is idle；
If 22) channel idle of 160MHz continuous bandwidths, data transmission set detects that big bandwidth channel is idle and empty Not busy big bandwidth channel is 160MHz main channel；If the channel of 160MHz continuous bandwidths is busy, data transmission set inspection Whether idle survey the main channel of 80MHz bandwidth and the auxiliary channel of 80MHz bandwidth in the channel of 160MHz continuous bandwidths；
23) if the main channel of 80MHz bandwidth is idle and the auxiliary channel of 80MHz bandwidth is busy, data transfer is set For the main channel for detecting that the idle and idle big bandwidth channel of big bandwidth channel is 80MHz bandwidth；If the main letter of 80MHz bandwidth Road is busy and the auxiliary channel of 80MHz bandwidth is idle, then data transmission set detects that big bandwidth channel is idle and idle Big bandwidth channel be 80MHz bandwidth auxiliary channel；If the main channel of 80MHz bandwidth and the auxiliary channel of 80MHz bandwidth It is busy, then data transmission set detection 80MHz bandwidth main channel in 40MHz bandwidth main channel and 40MHz bandwidth Auxiliary channel it is whether idle；
24) if the main channel of 40MHz bandwidth is idle and the auxiliary channel of 40MHz bandwidth is busy, data transfer is set For the main channel for detecting that the idle and idle big bandwidth channel of the big bandwidth channel is 40MHz bandwidth；If 40MHz bandwidth Main channel is busy and the auxiliary channel of 40MHz bandwidth is idle, then data transmission set detects that the big bandwidth channel is empty Not busy and idle big bandwidth channel is the auxiliary channel of 40MHz bandwidth.
Alternatively, data transmission set, which can also be detected in the auxiliary channel of 80MHz bandwidth, whether there is 40MHz bandwidth Auxiliary channel, if the auxiliary channel of 40MHz bandwidth be present, detect that big bandwidth channel is idle and idle big bandwidth channel is The auxiliary channel of 40MHz bandwidth.
The embodiment can be directed to big bandwidth channel and be detected using bandwidth order from big to small, improve detection effect Rate so that data transmission set efficiently can be carried out data transmission using big bandwidth channel.In addition, data transmission set detects Big bandwidth channel to the free time can be the main channel of big bandwidth, or the auxiliary channel of big bandwidth, for example, data transfer When equipment detects the busy main channel of 80MHz bandwidth and the auxiliary channel free time of 80MHz bandwidth, idle big bandwidth letter Road is the auxiliary channel of 80MHz bandwidth；Data transmission set detects main channel free time and the 80MHz bandwidth of 80MHz bandwidth Auxiliary channel it is busy when, idle big bandwidth channel be 80MHz bandwidth main channel.
As another optional embodiment, data transmission set can the history interference value based on channel, it is determined that being It is or above-mentioned suitable to the Channel Detection of small bandwidth from big bandwidth using above-mentioned from small bandwidth to the Channel Detection of big bandwidth order Sequence, can be specially：
Data transmission set determines whether history interference value is more than predetermined threshold value, if being more than predetermined threshold value, performs above-mentioned Step 11)；If being less than predetermined threshold value, above-mentioned steps 21 are performed).
Wherein, the history interference value can be Signal to Interference plus Noise Ratio (SINR, Signal the to Interference of measurement signal Plus Noise Ratio), that is, the ratio of the available signal power received and the interfering signal power received represents, should Ratio is bigger, and channel circumstance is better, and transmission rate is higher, therefore, the Signal to Interference plus Noise Ratio need to be set to negative value, then with predetermined threshold value ratio Compared with size；The history interference value can also be receiving power (RSRP, Reference the Signal Received of measurement signal Power) or received signal strength indicator (RSSI, Received Signal Strength Indicator) represents, RSRP is the important indicator for weighing cell coverage；RSSI is total reception work(on frequency pilot sign in certain Measurement bandwidth Average value of the rate in measurement period, if weigh the size that history is disturbed with RSRP or RSRP, also need the RSRP or RSRP is set to negative value, then the size compared with predetermined threshold value, i.e. history interference value shows that more greatly history disturbs bigger, history interference value Smaller, history interference is smaller.In addition, when the data transmission set is user equipment, user equipment can be from base station equipment The history interference value is obtained, or the comparative result between the history interference value and predetermined threshold value is obtained from base station equipment.
In the embodiment, history interference value is smaller, illustrates that the idle probability of big bandwidth channel is higher, thus using from Channel Detection order of the big bandwidth to small bandwidth；History interference value is bigger, illustrates that the idle probability of big bandwidth channel is smaller, because This is used from small bandwidth to the Channel Detection of big bandwidth order, so as to improve the efficiency of Channel Detection.
As another optional embodiment, before data transmission set performs step S201, also need to detect unauthorized Whether the main channel of 20MHz bandwidth is idle in frequency range, if the main channel of the 20MHz bandwidth is idle, can perform described above Clear channel assessment.
It can be seen that the embodiment of the present invention can detect big bandwidth channel idle in unauthorized frequency range, in the big band of free time Wide channels transmitting data, compared with using the channel of independent 20MHz bandwidth merely, greatly improve data transfer speed Rate.
Referring to Fig. 5, Fig. 5 is the schematic flow sheet of another data transmission method disclosed in the embodiment of the present invention, the number It is according to transmission method and the data transmission method difference in above-described embodiment, data transmission set can also utilize the big of free time The channel of at least one idle 20MHz bandwidth present in the adjacent busy big bandwidth channel of bandwidth channel carries out data Transmission, specifically, as shown in figure 5, the data transmission method may comprise steps of：
Whether the big bandwidth channel that S501, data transmission set are detected in unauthorized frequency range is idle, described big when detecting During the bandwidth channel free time, step S502 is performed, otherwise terminates this flow；
S502, data transmission set are detected in the busy big bandwidth channel adjacent with above-mentioned idle big bandwidth channel With the presence or absence of the channel of at least one idle 20MHz bandwidth, when the letter for detecting the presence of at least one idle 20MHz bandwidth During road, step S503 is performed, otherwise terminates this flow；
S503, data transmission set are on above-mentioned idle big bandwidth channel and above-mentioned at least one idle The channel data of 20MHz bandwidth.
As an alternative embodiment, data transmission set is on above-mentioned idle big bandwidth channel and above-mentioned The channel data of at least one idle 20MHz bandwidth can be：
By the way of carrier aggregation on above-mentioned idle big bandwidth channel and above-mentioned at least one idle The channel data of 20MHz bandwidth.
As another optional embodiment, data transmission set is on above-mentioned idle big bandwidth channel and upper Stating the channel data of at least one idle 20MHz bandwidth can be：
By the subcarrier zero setting of the channel of busy 20MHz bandwidth in above-mentioned busy big bandwidth channel, the free time is utilized Big bandwidth channel and zero setting after busy big bandwidth channel integrally carry out data transmission.
Wherein, using free time big bandwidth channel and busy big bandwidth channel integrally carry out data transmission can be with Big bandwidth channel and busy of one fast Fourier transform FFT (Fast Fourier Transformation) in the free time Big bandwidth channel transmitting data
As another optional embodiment, data transmission set is on above-mentioned idle big bandwidth channel and upper Stating the channel data of at least one idle 20MHz bandwidth can be：
By the subcarrier zero setting of the channel of the busy 20MHz bandwidth in part in above-mentioned busy big bandwidth channel；To carry The mode of ripple polymerization is integrally carried out data transmission using the busy big bandwidth channel after the big bandwidth channel of free time and zero setting. Wherein, it can be quick with one integrally to be carried out data transmission using the big bandwidth channel and busy big bandwidth channel of free time Fourier transform FFT (Fast Fourier Transformation) is in the big bandwidth channel of free time and busy big bandwidth letter Road transmitting data.
Fig. 6 is a kind of schematic diagram of channel assessment result disclosed in the embodiment of the present invention, and data transfer is illustrated by taking Fig. 6 as an example Equipment can be enterprising in the big bandwidth channel of free time and busy bandwidth channel by the way of zero setting or carrier aggregation Row data transfer.As shown in fig. 6, data transmission set detects that the big bandwidth channel of free time is the main channel of 40MHz bandwidth, examine Measure in the auxiliary channel of the 40MHz bandwidth of the adjacent busy same bandwidth of main channel of the 40MHz bandwidth and have one The channel of 20MHz bandwidth, then by the channel of the main channel of the 40MHz bandwidth and the 20MHz bandwidth in a manner of carrier aggregation A channel is bound into transmit data；Or can be by the letter of 20MHz bandwidth busy in the auxiliary channel of 40MHz bandwidth Subcarrier zero setting on road, the auxiliary channel of the main channel of 40MHz bandwidth and busy 40MHz bandwidth is bound into one Channel carries out data transmission, carried out data transmission with a Fourier transformation FFT using the channel after binding on.It can be seen that the reality The a width of 60MHz of band in mode after channel bonding is applied, compared with other data transmission methods, data transfer bandwidth is increased, carries High message transmission rate.
Again for example, referring to Fig. 7, Fig. 7 is a kind of schematic diagram of channel assessment result disclosed in the embodiment of the present invention, In a manner of illustrating that data transmission set can use zero setting or carrier aggregation exemplified by Fig. 7 the free time big bandwidth channel and Carry out data transmission on busy bandwidth channel.As shown in fig. 7, data transmission set detects that the big bandwidth channel of free time is The auxiliary channel of 80MHz bandwidth, detect the 80MHz bands of the adjacent busy same bandwidth of the auxiliary channel of the 80MHz bandwidth The channel of three idle 20MHz bandwidth in wide main channel be present, then by the auxiliary of the 80MHz bandwidth in a manner of carrier aggregation It is a channel to help channel and the channel bonding of this three idle 20MHz bandwidth, utilizes the channel transmission data after binding； Or can be by the subcarrier zero setting on the channel of 20MHz bandwidth busy in the main channel of 80MHz bandwidth, by 80MHz bands Wide main channel and the auxiliary channel of 80MHz bandwidth bind a channel, after utilizing binding with a Fourier transformation FFT Channel carry out data transmission.It can be seen that a width of 140MHz of band in the embodiment after channel bonding, with other transmission side datas Method is compared, and increases data transfer bandwidth, improves message transmission rate.
It should be noted that data transmission set utilizes the channel of 20MHz bandwidth idle in busy big bandwidth Premise can be that the busy big bandwidth is adjacent with the idle big bandwidth detected, and idle big bandwidth with it is busy Big bandwidth bandwidth it is identical, so as to reduce the complexity of Channel Detection and data transfer.
Again for example, referring to Fig. 8, Fig. 8 is the signal of another channel assessment result disclosed in the embodiment of the present invention Figure, in the big bandwidth channel of free time in a manner of illustrating that data transmission set can use zero setting or carrier aggregation exemplified by Fig. 8 And carry out data transmission on busy bandwidth channel.As shown in figure 8, data transmission set detects the big bandwidth letter of free time Road is the main channel of 40MHz bandwidth, detects the 40MHz bands of the adjacent busy same bandwidth of the main channel of the 40MHz bandwidth The channel of an idle 20MHz bandwidth in wide auxiliary channel be present, in addition, also detecting the auxiliary letter of the 40MHz bandwidth Idle 20MHz bands be present in the adjacent auxiliary channel that busy 80MHz bandwidth be present in road, the auxiliary channel of the 80MHz bandwidth Wide channel, then data transmission set can will be idle in the auxiliary channel of the main channel of the 40MHz bandwidth and 40MHz bandwidth The channel bonding of 20MHz bandwidth be a channel, and no longer bind idle in the auxiliary channel of busy 80MHz bandwidth The channel of 20MHz bandwidth, avoid the complexity of increase system, the i.e. a width of 60MHz of band of data transfer, rather than 120MHz.
Again for example, referring to Fig. 9, Fig. 9 is the signal of another channel assessment result disclosed in the embodiment of the present invention Figure, in the big band of free time in a manner of illustrating that data transmission set can use zero setting exemplified by Fig. 9 and in the way of carrier aggregation Carry out data transmission on wide channels and busy bandwidth channel.As shown in figure 9, data transmission set detect it is idle Big bandwidth channel is the main channel of 40MHz bandwidth, and the busy big bandwidth channel detected is non-conterminous 40MHz bandwidth Auxiliary channel, wherein, can be between the auxiliary channel of the main channel of the 40MHz bandwidth and the 40MHz bandwidth in unauthorized frequency range It is spaced multiple independent channels, or both and is located at different frequency ranges respectively, then data transmission set can be by the auxiliary of 40MHz bandwidth After helping the subcarrier zero setting of the channel of 20MHz bandwidth busy in channel, by the master of 40MHz bandwidth in a manner of carrier aggregation Channel and the auxiliary channel of 40MHz bandwidth are bound a channel and carried out data transmission.It can be seen that channel bonding in the embodiment The a width of 60MHz of band afterwards, compared with other data transmission methods, increases data transfer bandwidth, improves message transmission rate.
It can be seen that the data transmission method shown in Fig. 5 can further be increased with scattered bandwidth idle in the big bandwidth of flexible utilization Big data transmission bandwidth, improve message transmission rate.
Referring to Fig. 10, Figure 10 is a kind of structural representation of data transmission device disclosed in the embodiment of the present invention, such as scheme Shown in 10, the data transmission device can include：Detection module 101, transport module 102, wherein：
Detection module 101, whether idle for detecting the big bandwidth channel in unauthorized frequency range, the big bandwidth channel is More than 20MHz, less than or equal to the continuous bandwidth channel of the available bandwidth upper limit in the unauthorized frequency range；
Transport module 102, for when detection module 101 detects the big bandwidth channel free time, believing in the big bandwidth of free time Road transmitting data.
In the embodiment of the present invention, before data transmission device carries out data transmission, it is necessary to detection module 101 detect it is unauthorized Whether the big bandwidth channel in frequency range is idle, and the detection process is also referred to as clear channel assessment (Clear Channel Assessment, CCA).As an alternative embodiment, detection module 101 can be from small bandwidth to the order of big bandwidth Detected, as described in the embodiment corresponding to Fig. 3, including step 11) in foregoing invention embodiment is to step 14), here not It is described in detail again.
As another optional embodiment, whether detection module 101 detects big bandwidth channel in unauthorized frequency range Free time, specifically it can be detected from big bandwidth to the order of small bandwidth, as described in the embodiment corresponding to Fig. 4, including step 21) To step 24), I will not elaborate.
As another optional embodiment, data transmission device can the history interference value based on channel, it is determined that inspection Survey module 101 be using above-mentioned from small bandwidth to the Channel Detection of big bandwidth order, it is or above-mentioned from big bandwidth to small bandwidth Channel Detection order, therefore data transmission device can also include：
First determining module 103, for determining whether history interference value is more than predetermined threshold value, if history interference value is more than in advance If threshold value, then detection trigger module 101 performs the auxiliary of the adjacent 20MHz bandwidth of main channel of described detection 20MHz bandwidth The whether idle step of channel, i.e., from small bandwidth to the Channel Detection of big bandwidth order；
Second determining module 104, for determining whether history interference value is less than predetermined threshold value；If history interference value is less than pre- If threshold value, then detection trigger module 101 perform described detection 160MHz bandwidth channel whether the step of free time, i.e., from big band Channel Detection order of the width to small bandwidth.
Wherein, the history interference value can be Signal to Interference plus Noise Ratio (SINR, Signal the to Interference of measurement signal Plus Noise Ratio), that is, the ratio of the available signal power received and the interfering signal power received represents, should Ratio is bigger, and channel circumstance is better, and transmission rate is higher, therefore, the Signal to Interference plus Noise Ratio need to be set to negative value, then with predetermined threshold value ratio Compared with size；The history interference value can also be receiving power (RSRP, Reference the Signal Received of measurement signal Power) or received signal strength indicator (RSSI, Received Signal Strength Indicator) represents, RSRP is the important indicator for weighing cell coverage；RSSI is total reception work(on frequency pilot sign in certain Measurement bandwidth Average value of the rate in measurement period, if weigh the size that history is disturbed with RSRP or RSRP, also need the RSRP or RSRP is set to negative value, then the size compared with predetermined threshold value, i.e. history interference value shows that more greatly history disturbs bigger, history interference value Smaller, history interference is smaller.In addition, when the data transmission device is user equipment, user equipment can be from base station equipment The history interference value is obtained, or the comparative result between the history interference value and predetermined threshold value is obtained from base station equipment.Should Embodiment can be smaller in history interference, illustrates that the idle probability of big bandwidth channel is higher, therefore use from big to small Clear channel assessment；Illustrate that the idle probability of big bandwidth channel is smaller when history interference is bigger, therefore use from small To big clear channel assessment, so as to improve the efficiency of channel estimating.
As another optional embodiment, detection module 101 is in unauthorized frequency range is detected in data transmission device Big bandwidth channel it is whether idle before, also need the main channel for detecting 20MHz bandwidth in unauthorized frequency range whether idle, if should The main channel of 20MHz bandwidth is idle, then can perform clear channel assessment described above.
It can be seen that the embodiment of the present invention can detect big bandwidth channel idle in unauthorized frequency range, in the big band of free time Wide channels transmitting data, compared with using the channel of independent 20MHz bandwidth merely, greatly improve data transfer speed Rate.
As an alternative embodiment, in the data transmission device, transport module can not only utilize the big of free time Bandwidth for transmission data, the letter of at least one idle 20MHz bandwidth present in busy big bandwidth channel can also be utilized Road carries out data transmission.Wherein, idle big bandwidth channel can be adjacent with busy big bandwidth channel, and both can also be An equal amount of bandwidth, so as to reduce the complexity of clear channel assessment (CCA) detection.
Wherein, whether the big bandwidth channel that detection module 101 is detected in unauthorized frequency range is idle, detection and idle big band Channel in the adjacent busy big bandwidth channel of wide channels with the presence or absence of at least one idle 20MHz bandwidth can be simultaneously Carry out, correspondingly, transport module 102 can be on the big bandwidth channel of free time and in above-mentioned at least one idle 20MHz The channel data of bandwidth.
As an alternative embodiment, transport module 102 free time big bandwidth channel on and at least one sky The channel data of not busy 20MHz bandwidth can be：
By the way of carrier aggregation on above-mentioned idle big bandwidth channel and above-mentioned at least one idle The channel data of 20MHz bandwidth.
As another optional embodiment, transport module 102 is on above-mentioned idle big bandwidth channel and upper Stating the channel data of at least one idle 20MHz bandwidth can be：
By the subcarrier zero setting of the channel of busy 20MHz bandwidth in above-mentioned busy big bandwidth channel, the free time is utilized Big bandwidth channel and zero setting after busy big bandwidth channel integrally carry out data transmission.Wherein, the big band of free time is utilized Wide channels and busy big bandwidth channel integrally carry out data transmission being with a fast Fourier transform FFT (Fast Fourier Transformation) in idle big bandwidth channel and busy big bandwidth channel transmitting data.
As shown in fig. 6, detection module 101 detects that the big bandwidth channel of free time is the main channel of 40MHz bandwidth, detect A 20MHz band be present in the auxiliary channel of the 40MHz bandwidth of the adjacent busy same bandwidth of the main channel of the 40MHz bandwidth Wide channel, then transport module 102 can be in a manner of carrier aggregation by the main channel of the 40MHz bandwidth and the 20MHz bands Wide channel bonding utilizes the channel transmission data after binding into a channel；Or transport module 102 can be by 40MHz bands Subcarrier zero setting in wide auxiliary channel on the channel of busy 20MHz bandwidth, by the main channel of 40MHz bandwidth and non- The auxiliary channel of idle 40MHz bandwidth, which is bound into a channel, to carry out data transmission, with a Fast Fourier Transform (FFT) FFT profit On being carried out data transmission with the channel after binding.It can be seen that a width of 60MHz of band in the embodiment after channel bonding, with other Data transmission device is compared, and increases data transfer bandwidth, improves message transmission rate.
Again for example, as shown in fig. 7, detection module 101 detects that the big bandwidth channel of free time is the auxiliary of 80MHz bandwidth Help channel, detect the adjacent busy same bandwidth of the auxiliary channel of the 80MHz bandwidth 80MHz bandwidth main channel in deposit In the channel of three idle 20MHz bandwidth, then transport module 102 in a manner of carrier aggregation by the auxiliary of the 80MHz bandwidth Channel and the channel bonding of this three idle 20MHz bandwidth are a channel, utilize the channel transmission data after binding；Or Person's transport module 102 can by the subcarrier zero setting on the channel of 20MHz bandwidth busy in the main channel of 80MHz bandwidth, The auxiliary channel of the main channel of 80MHz bandwidth and 80MHz bandwidth is bound into a channel, with a Fourier transformation FFT Carried out data transmission using the channel after binding.It can be seen that a width of 140MHz of band in the embodiment after channel bonding, with other Data transmission device is compared, and increases data transfer bandwidth, improves message transmission rate.
It should be noted that data transmission device utilizes the channel of 20MHz bandwidth idle in busy big bandwidth Premise can be that the busy big bandwidth is adjacent with the idle big bandwidth detected, and idle big bandwidth with it is busy Big bandwidth bandwidth it is identical, so as to reduce the complexity of Channel Detection and data transfer.
Again for example, as shown in figure 8, detection module 101 detects that the big bandwidth channel of free time is the master of 40MHz bandwidth Channel, detect the adjacent busy same bandwidth of the main channel of the 40MHz bandwidth 40MHz bandwidth auxiliary channel in exist The channel of one idle 20MHz bandwidth, in addition, also detect the auxiliary channel of the 40MHz bandwidth it is adjacent exist it is busy There is the channel of idle 20MHz bandwidth in the auxiliary channel of 80MHz bandwidth, the auxiliary channel of the 80MHz bandwidth, then data transfer Equipment can tie up the channel of 20MHz bandwidth idle in the auxiliary channel of the main channel of the 40MHz bandwidth and 40MHz bandwidth It is set to a channel, and no longer binds the channel of 20MHz bandwidth idle in the auxiliary channel of busy 80MHz bandwidth, keeps away Exempt from the complexity of increase Channel Detection or data transfer, the i.e. a width of 60MHz of band of data transfer, rather than 120MHz.
As another optional embodiment, transport module 102 is on above-mentioned idle big bandwidth channel and upper Stating the channel data of at least one idle 20MHz bandwidth can be：
By the subcarrier zero setting of the channel of the busy 20MHz bandwidth in part in above-mentioned busy big bandwidth channel；To carry The mode of ripple polymerization is integrally carried out data transmission using the busy big bandwidth channel after the big bandwidth channel of free time and zero setting.
For example, as shown in figure 9, the idle big bandwidth channel that data transmission set detects is 40MHz bandwidth Main channel, the busy big bandwidth channel detected are the auxiliary channel of non-conterminous 40MHz bandwidth, wherein, unauthorized frequency Multiple independent channels, or two can be spaced between the main channel of the 40MHz bandwidth and the auxiliary channel of the 40MHz bandwidth in section Person is located at different frequency ranges respectively, for example, being located at 5Ghz frequency ranges and 70GHz frequency ranges respectively, then data transmission set can incite somebody to action , will in a manner of carrier aggregation in the auxiliary channel of 40MHz bandwidth after the subcarrier zero setting of the channel of busy 20MHz bandwidth The auxiliary channel of the main channel of 40MHz bandwidth and 40MHz bandwidth is bound a channel and carried out data transmission.It can be seen that the implementation The a width of 60MHz of band in mode after channel bonding, compared with other data transmission methods, increases data transfer bandwidth, improves Message transmission rate.
It can be seen that data transmission device shown in Figure 10 can be with scattered bandwidth idle in the big bandwidth of flexible utilization, further Increase data transfer bandwidth, improve message transmission rate.
Figure 11 is referred to, Figure 11 is a kind of structural representation of data transmission set disclosed in the embodiment of the present invention, is such as schemed Shown in 11, the data transmission set can include but is not limited to：Memory 111, communication interface 112 and processor 113, its In, communication interface 112 is used to transmit data, and memory 111 is used for history interference value or the reception for storing the detection of processor 113 The history interference value that other data transmission sets are sent.
Communication interface 112 can be wire communication access port, wireless communication interface or its combination, wherein, wire communication connects Mouth for example can be Ethernet interface.Ethernet interface can be optical interface, electrical interface or its combination.Wireless communication interface can be with For WLAN interface, cellular network communication interface or its combination etc..Memory 113 can include volatile memory (English： Volatile memory), such as random access memory (English：Random-access memory, abbreviation：RAM)；Storage Device can also include nonvolatile memory (English：Non-volatile memory), such as flash memory (English： Flash memory), hard disk (English：Hard disk drive, abbreviation：HDD) or solid state hard disc is (English：solid-state Drive, abbreviation：SSD)；Memory 111 can also include the combination of the memory of mentioned kind.Processor 113 can be center Processor (English：Central processing unit, abbreviation：CPU), network processing unit (English：network Processor, abbreviation：NP) or CPU and NP combination.Processor 113 can further include hardware chip.It is above-mentioned hard Part chip can be application specific integrated circuit (English：Application-specific integrated circuit, abbreviation： ASIC), PLD (English：Programmable logic device, abbreviation：PLD) or it is combined.Above-mentioned PLD Can be CPLD (English：Complex programmable logic device, abbreviation：CPLD), it is existing Field programmable logic gate array (English：Field-programmable gate array, abbreviation：FPGA), GAL (English：Generic array logic, abbreviation：GAL) or it is combined.
In the embodiment of the present invention, whether the big bandwidth channel that processor 113 is used to detect in unauthorized frequency range is idle, its In, big bandwidth channel is more than 20MHz, less than or equal to the continuous bandwidth channel of the available bandwidth upper limit in the unauthorized frequency range； When processor 113 detects the big bandwidth channel free time, can be transmitted by communication interface 112 on the big bandwidth channel of free time Data.
In the embodiment of the present invention, it is necessary to detect non-award before processor 113 is carried out data transmission by communication interface 112 Whether the big bandwidth channel weighed in frequency range is idle, and the detection process is also referred to as clear channel assessment (Clear Channel Assessment, CCA).As an alternative embodiment, processor 113 can enter from small bandwidth to the order of big bandwidth Row detects, and as described in the embodiment corresponding to Fig. 3, performs following steps：
Whether the auxiliary channel for detecting the adjacent 20MHz bandwidth of main channel of 20MHz bandwidth is idle；
If the auxiliary channel of 20MHz bandwidth is idle, the adjacent 40MHz bands of the auxiliary channel of the 20MHz bandwidth are detected Whether wide auxiliary channel is idle；
If the auxiliary channel of 40MHz bandwidth is idle, the adjacent 80MHz bands of the auxiliary channel of the 40MHz bandwidth are detected Whether wide auxiliary channel is idle；If the auxiliary channel of 40MHz bandwidth is busy, detect the big bandwidth channel it is idle and Idle big bandwidth channel is the main channel of 40MHz bandwidth；
If the auxiliary channel of 80MHz bandwidth is idle, the idle and idle big bandwidth letter of the big bandwidth channel is detected Road is the main channel of 160MHz bandwidth；If the auxiliary channel of 80MHz bandwidth is busy, detect that the big bandwidth channel is idle And idle big bandwidth channel is the main channel of 80MHz bandwidth.
In the embodiment of the present invention, processor 113 detects that big bandwidth channel is idle and idle big bandwidth channel is During the main channel of 160MHz bandwidth, the main channel of the 160MHz bandwidth is as shown in figure 3, data transmission set can be in the 160MHz The main channel transmitting data of bandwidth.Alternatively, processor 113 detects the idle and idle big bandwidth channel of big bandwidth channel For 80MHz bandwidth main channel when, the main channel of the 80MHz bandwidth is as shown in figure 3, processor 113 can be in the 80MHz bandwidth Main channel transmitting data.
The embodiment can be directed to big bandwidth channel and be detected using bandwidth order from small to large, improve detection effect Rate so that data transmission set efficiently can be carried out data transmission using big bandwidth channel.
As another optional embodiment, whether the big bandwidth channel that processor 113 is detected in unauthorized frequency range is empty In the spare time, it can specifically be detected from big bandwidth to the order of small bandwidth, as described in the embodiment corresponding to Fig. 4, be comprised the following steps：
Whether the channel for detecting 160MHz continuous bandwidths is idle；
If the channel idle of 160MHz continuous bandwidths, the idle and idle big bandwidth letter of the big bandwidth channel is detected Road is 160MHz main channel；
If the channel of 160MHz continuous bandwidths is busy, 80MHz bands in the channel of the 160MHz continuous bandwidths are detected Whether wide main channel and the auxiliary channel of 80MHz bandwidth are idle；
If the main channel of 80MHz bandwidth is idle and the auxiliary channel of 80MHz bandwidth is busy, the big band is detected The idle and idle big bandwidth channel of wide channels is the main channel of 80MHz bandwidth；
If the main channel of 80MHz bandwidth is busy and the auxiliary channel of 80MHz bandwidth is idle, the big band is detected The idle and idle big bandwidth channel of wide channels is the auxiliary channel of 80MHz bandwidth；
If the main channel of 80MHz bandwidth and the auxiliary channel of 80MHz bandwidth are busy, the 80MHz bands are detected Whether the auxiliary channel of the main channel of 40MHz bandwidth and 40MHz bandwidth is idle in wide main channel；
If the main channel of 40MHz bandwidth is idle and the auxiliary channel of 40MHz bandwidth is busy, the big band is detected The idle and idle big bandwidth channel of wide channels is the main channel of 40MHz bandwidth；
If the main channel of 40MHz bandwidth is busy and the auxiliary channel of 40MHz bandwidth is idle, the big band is detected The idle and idle big bandwidth channel of wide channels is the auxiliary channel of 40MHz bandwidth.
Alternatively, processor 113, which can also be detected in the auxiliary channel of 80MHz bandwidth, whether there is the auxiliary of 40MHz bandwidth Channel is helped, if the auxiliary channel of 40MHz bandwidth be present, detects that big bandwidth channel is idle and idle big bandwidth channel is The auxiliary channel of 40MHz bandwidth.
The embodiment can be directed to big bandwidth channel and be detected using bandwidth order from big to small, improve detection effect Rate so that data transmission set efficiently can be carried out data transmission using big bandwidth channel.In addition, data transmission set detects The idle big bandwidth channel arrived can be the main channel of big bandwidth, or the auxiliary channel of big bandwidth, for example, data pass When transfer device detects the busy main channel of 80MHz bandwidth and the auxiliary channel free time of 80MHz bandwidth, idle big bandwidth Channel is the auxiliary channel of 80MHz bandwidth；Data transmission set detects main channel free time and the 80MHz bands of 80MHz bandwidth When wide auxiliary channel is busy, idle big bandwidth channel is the main channel of 80MHz bandwidth.
In the embodiment of the present invention, processor 113 detect big bandwidth channel in unauthorized frequency range it is whether idle before, may be used also To perform following steps：
Whether the main channel for detecting 20MHz bandwidth in the unauthorized frequency range is idle；
If the main channel of 20MHz bandwidth is idle in the unauthorized frequency range, perform in the described unauthorized frequency range of detection The whether idle step of big bandwidth channel.
As another optional embodiment, processor 113 can the history interference value based on channel, it is determined that being to use It is above-mentioned from small bandwidth to the clear channel assessment of big bandwidth, it is or above-mentioned from big bandwidth to the clear channel assessment (CCA) of small bandwidth Method, it may comprise steps of：
Determine whether history interference value is more than predetermined threshold value；
If history interference value is more than predetermined threshold value, the adjacent 20MHz of the main channel of described detection 20MHz bandwidth is performed The whether idle step of the auxiliary channel of bandwidth, i.e., from small bandwidth to the Channel Detection of big bandwidth order.
If history interference value is less than or equal to predetermined threshold value, whether the channel for performing described detection 160MHz bandwidth is empty Not busy step, i.e., from big bandwidth to the Channel Detection of small bandwidth order.
Alternatively, data transmission set can also utilize the adjacent busy big bandwidth channel of idle big bandwidth channel Present in the channel of at least one idle 20MHz bandwidth carry out data transmission, specifically, processor 113 can perform with Lower step：
With the presence or absence of at least one in the detection busy big bandwidth channel adjacent with the idle big bandwidth channel The channel of idle 20MHz bandwidth；
If the channel of at least one idle 20MHz bandwidth be present, at least one idle 20MHz bandwidth Channel data.
Wherein, idle big bandwidth channel is identical with the bandwidth of the busy big bandwidth channel, so as to reduce channel The complexity of detection.
As an alternative embodiment, processor 113 can be in the letter of at least one idle 20MHz bandwidth Road transmitting data, specially in a manner of carrier aggregation on the channel of at least one idle 20MHz bandwidth and Carry out data transmission on the idle big bandwidth channel.
As another optional embodiment, processor 113 can utilize the busy big bandwidth letter of the determination The channel transmission data of at least one idle 20MHz bandwidth described in road, specially by the busy big bandwidth channel In busy 20MHz bandwidth channel subcarrier zero setting, using busy after the idle big bandwidth channel and zero setting Big bandwidth channel integrally carry out data transmission.Wherein, it is whole using the big bandwidth channel and busy big bandwidth channel of free time Body carries out data transmission being in the free time with a fast Fourier transform FFT (Fast Fourier Transformation) Big bandwidth channel and busy big bandwidth channel transmitting data.Specifically Fig. 6 to Fig. 8 pairs is may be referred in above-described embodiment The associated description answered, the embodiment of the present invention are no longer described in detail.
As another optional embodiment, processor 113 is on above-mentioned idle big bandwidth channel and above-mentioned The channel data of at least one idle 20MHz bandwidth can be：
By the subcarrier zero setting of the channel of the busy 20MHz bandwidth in part in above-mentioned busy big bandwidth channel；To carry The mode of ripple polymerization is integrally carried out data transmission using the busy big bandwidth channel after the big bandwidth channel of free time and zero setting. Specifically associated description corresponding to Fig. 9, the embodiment of the present invention in above-described embodiment is may be referred to no longer to be described in detail.
Further, the data transmission set shown in Figure 11 can be entered with scattered bandwidth idle in the big bandwidth of flexible utilization One step increases data transfer bandwidth, improves message transmission rate.
A kind of data transmission method and device disclosed in the embodiment of the present invention are described in detail above, herein should The principle and embodiment of the present invention are set forth with specific case, the explanation of above example is only intended to help and managed Solve the method and its core concept of the present invention；Meanwhile for those of ordinary skill in the art, according to the thought of the present invention, There will be changes in embodiment and application, in summary, this specification content should not be construed as to this hair Bright limitation.

Claims (20)

  1. A kind of 1. data transmission method, it is characterised in that including：
    Whether the big bandwidth channel detected in unauthorized frequency range is idle, and the big bandwidth channel is more than 20MHz, less than or equal to institute State the continuous bandwidth channel of the available bandwidth upper limit in unauthorized frequency range；
    When detecting the big bandwidth channel free time, in the big bandwidth channel transmitting data of free time.
  2. 2. according to the method for claim 1, it is characterised in that methods described also includes：
    It whether there is at least one free time in the detection busy big bandwidth channel adjacent with the idle big bandwidth channel 20MHz bandwidth channel；
    If the channel of at least one idle 20MHz bandwidth be present, in the channel of at least one idle 20MHz bandwidth Transmitting data.
  3. 3. according to the method for claim 2, it is characterised in that the idle big bandwidth channel with it is described busy big The bandwidth of bandwidth channel is identical.
  4. 4. according to the method in claim 2 or 3, it is characterised in that described at least one idle 20MHz bandwidth Channel data, including：
    In a manner of carrier aggregation on the channel of at least one idle 20MHz bandwidth and the idle big bandwidth Carry out data transmission on channel.
  5. 5. according to the method in claim 2 or 3, it is characterised in that the busy big bandwidth using the determination The channel transmission data of at least one idle 20MHz bandwidth described in channel, including：
    By the subcarrier zero setting of the channel of busy 20MHz bandwidth in the busy big bandwidth channel, the free time is utilized Big bandwidth channel and zero setting after busy big bandwidth channel integrally carry out data transmission.
  6. 6. method according to any one of claim 1 to 5, it is characterised in that methods described also includes：
    Whether the main channel for detecting 20MHz bandwidth in the unauthorized frequency range is idle；
    If the main channel of 20MHz bandwidth is idle in the unauthorized frequency range, perform big in the described unauthorized frequency range of detection The whether idle step of bandwidth channel.
  7. 7. method according to any one of claim 1 to 6, it is characterised in that big in the unauthorized frequency range of detection Whether bandwidth channel is idle, including：
    Whether the auxiliary channel for detecting the adjacent 20MHz bandwidth of main channel of 20MHz bandwidth is idle；
    If the auxiliary channel of 20MHz bandwidth is idle, the adjacent 40MHz bandwidth of auxiliary channel of the 20MHz bandwidth is detected Whether auxiliary channel is idle；
    If the auxiliary channel of 40MHz bandwidth is idle, the adjacent 80MHz bandwidth of auxiliary channel of the 40MHz bandwidth is detected Whether auxiliary channel is idle；If the auxiliary channel of 40MHz bandwidth is busy, detect that the big bandwidth channel is idle and idle Big bandwidth channel be 40MHz bandwidth main channel；
    If the auxiliary channel of 80MHz bandwidth is idle, detect that the big bandwidth channel is idle and idle big bandwidth channel is The main channel of 160MHz bandwidth；If the auxiliary channel of 80MHz bandwidth is busy, detect that the big bandwidth channel is idle and empty Not busy big bandwidth channel is the main channel of 80MHz bandwidth.
  8. 8. method according to any one of claim 1 to 6, it is characterised in that big in the unauthorized frequency range of detection Whether bandwidth channel is idle, including：
    Whether the channel for detecting 160MHz continuous bandwidths is idle；
    If the channel idle of 160MHz continuous bandwidths, detect that the big bandwidth channel is idle and idle big bandwidth channel is 160MHz main channel；
    If the channel of 160MHz continuous bandwidths is busy, 80MHz bandwidth in the channel of the 160MHz continuous bandwidths is detected Whether the auxiliary channel of main channel and 80MHz bandwidth is idle；
    If the main channel of 80MHz bandwidth is idle and the auxiliary channel of 80MHz bandwidth is busy, the big bandwidth letter is detected The idle and idle big bandwidth channel in road is the main channel of 80MHz bandwidth；
    If the main channel of 80MHz bandwidth is busy and the auxiliary channel of 80MHz bandwidth is idle, the big bandwidth letter is detected The idle and idle big bandwidth channel in road is the auxiliary channel of 80MHz bandwidth；
    If the main channel of 80MHz bandwidth and the auxiliary channel of 80MHz bandwidth are busy, the 80MHz bandwidth is detected Whether the auxiliary channel of the main channel of 40MHz bandwidth and 40MHz bandwidth is idle in main channel；
    If the main channel of 40MHz bandwidth is idle and the auxiliary channel of 40MHz bandwidth is busy, the big bandwidth letter is detected The idle and idle big bandwidth channel in road is the main channel of 40MHz bandwidth；
    If the main channel of 40MHz bandwidth is busy and the auxiliary channel of 40MHz bandwidth is idle, the big bandwidth letter is detected The idle and idle big bandwidth channel in road is the auxiliary channel of 40MHz bandwidth.
  9. 9. according to the method for claim 7, it is characterised in that methods described also includes：
    Determine whether history interference value is more than predetermined threshold value；
    If history interference value is more than predetermined threshold value, the adjacent 20MHz bandwidth of the main channel of described detection 20MHz bandwidth is performed The whether idle step of auxiliary channel.
  10. 10. according to the method for claim 8, it is characterised in that methods described also includes：
    Determine whether history interference value is less than predetermined threshold value；
    If history interference value is less than predetermined threshold value, perform described detection 160MHz bandwidth channel whether the step of free time.
  11. A kind of 11. data transmission device, it is characterised in that including：
    Detection module, it is whether idle for detecting the big bandwidth channel in unauthorized frequency range, the big bandwidth channel be more than 20MHz, less than or equal to the continuous bandwidth channel of the available bandwidth upper limit in the unauthorized frequency range；
    Transport module, for when the detection module detects the big bandwidth channel free time, in the big bandwidth channel of free time Transmitting data.
  12. 12. device according to claim 11, it is characterised in that the detection module, be additionally operable to detection and the free time The adjacent busy big bandwidth channel of big bandwidth channel in whether there is the channel of at least one idle 20MHz bandwidth；
    The transport module, at least one idle 20MHz bandwidth in the busy big bandwidth channel be present During channel, in the channel data of at least one idle 20MHz bandwidth.
  13. 13. device according to claim 12, it is characterised in that the idle big bandwidth channel with it is described busy The bandwidth of big bandwidth channel is identical.
  14. 14. the device according to claim 12 or 13, it is characterised in that the transport module is at least one free time 20MHz bandwidth channel data, at least one idle 20MHz bands specially in a manner of carrier aggregation Carry out data transmission on wide channel and on the idle big bandwidth channel.
  15. 15. the device according to claim 12 or 13, it is characterised in that the transport module utilizes the non-NULL of the determination The channel transmission data of at least one idle 20MHz bandwidth described in not busy big bandwidth channel, specially will be described busy Big bandwidth channel in busy 20MHz bandwidth channel subcarrier zero setting, using the idle big bandwidth channel and putting Busy big bandwidth channel after zero integrally carries out data transmission.
  16. 16. the device according to any one of claim 11 to 15, it is characterised in that the detection module is additionally operable to detect Whether the main channel of 20MHz bandwidth is idle in the unauthorized frequency range；If the main channel of 20MHz bandwidth in the unauthorized frequency range Free time, then perform big bandwidth channel in the described unauthorized frequency range of detection whether idle step.
  17. 17. the device according to any one of claim 11 to 16, it is characterised in that the detection module detection is unauthorized Whether the big bandwidth channel in frequency range is idle, is specially：
    Whether the auxiliary channel for detecting the adjacent 20MHz bandwidth of main channel of 20MHz bandwidth is idle；
    If the auxiliary channel of 20MHz bandwidth is idle, the adjacent 40MHz bandwidth of auxiliary channel of the 20MHz bandwidth is detected Whether auxiliary channel is idle；
    If the auxiliary channel of 40MHz bandwidth is idle, the adjacent 80MHz bandwidth of auxiliary channel of the 40MHz bandwidth is detected Whether auxiliary channel is idle；If the auxiliary channel of 40MHz bandwidth is busy, idle and idle big of big bandwidth channel is detected Bandwidth channel is the main channel of 40MHz bandwidth；
    If the auxiliary channel of 80MHz bandwidth is idle, detect that big bandwidth channel is idle and idle big bandwidth channel is The main channel of 160MHz bandwidth；If the auxiliary channel of 80MHz bandwidth is busy, detect that big bandwidth channel is idle and idle Big bandwidth channel is the main channel of 80MHz bandwidth.
  18. 18. the device according to any one of claim 11 to 16, it is characterised in that the detection module detection is unauthorized Whether the big bandwidth channel in frequency range is idle, is specially：
    Whether the channel for detecting 160MHz continuous bandwidths is idle；
    If the channel idle of 160MHz continuous bandwidths, detect that big bandwidth channel is idle and idle big bandwidth channel is 160MHz main channel；
    If the channel of 160MHz continuous bandwidths is busy, 80MHz bandwidth in the channel of the 160MHz continuous bandwidths is detected Whether the auxiliary channel of main channel and 80MHz bandwidth is idle；
    If the main channel of 80MHz bandwidth is idle and the auxiliary channel of 80MHz bandwidth is busy, detect that big bandwidth channel is empty Not busy and idle big bandwidth channel is the main channel of 80MHz bandwidth；
    If the main channel of 80MHz bandwidth is busy and the auxiliary channel of 80MHz bandwidth is idle, detect that big bandwidth channel is empty Not busy and idle big bandwidth channel is the auxiliary channel of 80MHz bandwidth；
    If the main channel of 80MHz bandwidth and the auxiliary channel of 80MHz bandwidth are busy, the 80MHz bandwidth is detected Whether the auxiliary channel of the main channel of 40MHz bandwidth and 40MHz bandwidth is idle in main channel；
    If the main channel of 40MHz bandwidth is idle and the auxiliary channel of 40MHz bandwidth is busy, detect that big bandwidth channel is empty Not busy and idle big bandwidth channel is the main channel of 40MHz bandwidth；
    If the main channel of 40MHz bandwidth is busy and the auxiliary channel of 40MHz bandwidth is idle, detect that big bandwidth channel is empty Not busy and idle big bandwidth channel is the auxiliary channel of 40MHz bandwidth.
  19. 19. device according to claim 17, it is characterised in that described device also includes：
    First determining module, for determining whether history interference value is more than predetermined threshold value, if history interference value is more than predetermined threshold value, Then triggering the auxiliary channel for the adjacent 20MHz bandwidth of main channel that the detection module performs described detection 20MHz bandwidth is No idle step.
  20. 20. device according to claim 18, it is characterised in that described device also includes：
    Second determining module, for determining whether history interference value is less than predetermined threshold value；If history interference value is less than predetermined threshold value, Then trigger the detection module perform described detection 160MHz bandwidth channel whether the step of free time.
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