CN105392144B - A kind of channel multiplexing method and device of unauthorized frequency range - Google Patents
A kind of channel multiplexing method and device of unauthorized frequency range Download PDFInfo
- Publication number
- CN105392144B CN105392144B CN201510917465.8A CN201510917465A CN105392144B CN 105392144 B CN105392144 B CN 105392144B CN 201510917465 A CN201510917465 A CN 201510917465A CN 105392144 B CN105392144 B CN 105392144B
- Authority
- CN
- China
- Prior art keywords
- frame
- subframe
- base station
- transmission
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000005540 biological transmission Effects 0.000 claims abstract description 123
- 238000001514 detection method Methods 0.000 claims abstract description 84
- 238000012790 confirmation Methods 0.000 claims abstract description 25
- 238000013475 authorization Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 8
- 239000013256 coordination polymer Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000002860 competitive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention provides the channel multiplexing methods and device of a kind of unauthorized frequency range.The specific embodiment of the method detects the channel energy in detection frame comprising steps of when there are data to be transmitted, obtains current WiFi website in the detection frame to the holding time ratio α of channel；According to the α, the type of service of data to be transmitted and default first formula, the first quantity of the subframe that the base station LAA occupies in first transmission frame in sending cycle is obtained, and is carried out data transmission using the subframe of first quantity；According to the confirmation message number and default second formula obtained after data transmission in previous transmission frame, determine that other send the second quantity of the subframe that the base station LAA occupies in frame, and carry out data transmission using the subframe of second quantity.Using the present embodiment, the base station LAA and the fairness and efficiency when WiFi website multipling channel can be taken into account.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of the channel multiplexing method and device of unauthorized frequency range.
Background technique
With the sharp increase of mobile data demand and user experience demand, existing long term evolution LTE system is increasingly difficult
To meet the requirements, industry and academia propose a variety of methods to solve this problem, the method that one of which is widely recognized as
Be allow LTE occupy 2.4G and 5G unauthorized frequency range, and with original technology harmonious coexistence.Technology in these frequency ranges is main
There are Wireless Fidelity WiFi, bluetooth Bluetooth and ZigBee protocol ZigBee etc..We mainly consider WiFi herein.This LTE
It is referred to as LTE-Unlicensed in the mode that unauthorized frequency range coexists with WiFi, abbreviation LTE-U is also designated as LAA
(access is assisted in Licensed Assisted Access, authorization) using LTE.
To there are two the basic demands of LAA, first is that unauthorized frequency range can be occupied to increase transmission bandwidth, second is that WiFi
There cannot be excessive interference.As a kind of supplementary functions of LTE, after the service distributing of LTE base station is to the base station LAA, LTE exists
Authorized spectrum band transmission and LAA can be carried out simultaneously in the transmission of unauthorized frequency range, thus improve entire LTE using frequency spectrum
Bandwidth and transmission rate.The characteristics of LAA is, it can be competed as a WiFi website with other WiFi, and after busy channel
Data are efficiently transmitted as a LTE website.
In the prior art, third generation cooperative partner program 3GPP (the 3rd Generation Partnership
Project LAA technology formally) is proposed in the Release-13 stage, and Listen Before Talk LBT (Listen Before Talk)
As its key technology.European Telecommunications Standards Institute ETSI (European Telecommunications Standards
Institute it) proposes 4 kinds of LBT types: the LBT of NO LBT, not random back, having random back but contention window fixed
LBT, the LBT for having random back and contention window variation.
The application is the improvement carried out for the first seed type, that is, is directed to NO LBT type.Under this seed type, work as LAA
When base station there are data to need to transmit, is not competed with WiFi and directly occupy channel.The base station LAA is anti-according to channel estimating and user
The period of WiFi transmission is distributed in feedback decision, and during this period of time LAA sends ABS blank frame, and WiFi can detecte at this time
Then channel idle transmits data.
The prior art has the following problems: the base station LAA is occupying unauthorized with WiFi website jointly in NO LBT type
When the channel of frequency range, the time of busy channel is uncertain.When the base station LAA long-time busy channel, the efficiency of data transmission
It is relatively high, but mean that the time of WiFi website busy channel can be shorter in this way, it is inequitable for WiFi；
And when the time of the base station LAA busy channel is shorter, WiFi website has more times to occupy channel, but LAA base
The data transmission efficiency stood is with regard to relatively low.Therefore, existing LAA BTS channel multiplexing method cannot be considered in terms of the base station LAA with
Fairness and efficiency when the common busy channel of WiFi website.
Summary of the invention
The channel multiplexing method and device for being designed to provide a kind of unauthorized frequency range of the embodiment of the present invention, Neng Goujian
Care for the base station LAA and the fairness and efficiency when WiFi website multipling channel.
In order to achieve the above object, the embodiment of the invention discloses a kind of channel multiplexing method of unauthorized frequency range, applications
The access base station LAA is assisted in authorization, which comprises
When there are data to be transmitted, the channel energy in detection frame is detected, obtains current WiFi website in institute
State the holding time ratio α in detection frame to channel；
According to the α, the type of service of data to be transmitted and default first formula, first hair in sending cycle is obtained
The first quantity of the subframe that the base station LAA occupies in frame is sent, and is carried out data transmission using the subframe of first quantity；Wherein, it sends out
Sending the period includes a detection frame and multiple transmission frames, and each frame includes multiple subframes of identical quantity；
For other transmission frames in the sending cycle in addition to first sends frame, according to data in previous transmission frame
The confirmation message number obtained after transmission and default second formula, determine that other send the subframe that the base station LAA occupies in frame
Second quantity, and carried out data transmission using the subframe of second quantity, wherein the data of each subframe connect when being successfully received
Receive corresponding confirmation message.
Preferably, it is described according to the α, the type of service of data to be transmitted and default first formula, it obtains and sends week
First sends the first quantity of the subframe that the base station LAA occupies in frame in phase, comprising:
According to S=λ E+ (1- λ) F, the subframe that the base station LAA occupies in first transmission frame in sending cycle is obtained
First quantity, wherein first quantity is N corresponding value when the S is maximized,M is the sub-frame number that each frame includes in sending cycle；N
For the integer for being greater than zero less than M, λ is constant value corresponding with the type of service of data to be transmitted, and value range is 0~1.
Preferably, described according to the confirmation message number and default second obtained after data transmission in previous transmission frame
Formula determines that other send the second quantity of the subframe that the base station LAA occupies in frame, comprising:
For in the sending cycle except first send frame in addition to other send frames, according to Determine that other send the second quantity of the subframe that the base station LAA occupies in frame, wherein NiIt is preceding
One sends the number of sub frames that the base station LAA occupies in frame, Ni+1For this, other send the number of sub frames that the base station LAA occupies in frame, before γ is
One sends the confirmation message number obtained after data transmission in frame and NiRatio.
Preferably, the sending cycle includes 1 detection frame and 4 transmission frames, each frame includes 10 subframes.
Preferably, the channel energy in detection frame detects, current WiFi website is obtained in the detection frame
The interior holding time ratio α to channel, comprising:
Obtain the channel energy of each subframe in detection frame；
For each subframe in detection frame, judge whether the channel energy of the subframe is greater than the energy threshold of setting, such as
Fruit is, it is determined that the subframe is occupied by WiFi website；
According to sub-frame number total in the quantity of the subframe occupied by WiFi website and the detection frame, the current station WiFi is determined
Point is in the detection frame to the holding time ratio α of channel.
Preferably, the method also includes:
Vacant data frames are transmitted in the subframe that WiFi website carries out data transmission in each transmission frame.
In order to achieve the above object of the invention, the embodiment of the invention also discloses a kind of channel occupancy of unauthorized frequency range dresses
It sets, is applied to authorization and assists the access base station LAA, described device includes:
Channel detection module is obtained for being detected when there are data to be transmitted to the channel energy in detection frame
Current WiFi website is in the detection frame to the holding time ratio α of channel；
First transmission module, for obtaining according to the type of service of the α, data to be transmitted and default first formula
In sending cycle first send frame in the base station LAA occupy subframe the first quantity, and using first quantity subframe into
The transmission of row data；Wherein, sending cycle includes a detection frame and multiple transmission frames, and each frame includes multiple sons of identical quantity
Frame；
Second transmission module, other transmission frames for being directed in the sending cycle in addition to first sends frame, according to
The confirmation message number obtained after data transmission in previous transmission frame and default second formula, determine that other send in frame
Second quantity of the subframe that the base station LAA occupies, and carried out data transmission using the subframe of second quantity, wherein each subframe
Data receive corresponding confirmation message when being successfully received.
Preferably, first transmission module is specifically used for:
According to S=λ E+ (1- λ) F, the subframe that the base station LAA occupies in first transmission frame in sending cycle is obtained
First quantity, wherein first quantity is N corresponding value when the S is maximized,M is the sub-frame number that each frame includes in sending cycle；N
For the integer for being greater than zero less than M, λ is constant value corresponding with the type of service of data to be transmitted, and value range is 0~1.
Preferably, second transmission module is specifically used for:
For in the sending cycle except first send frame in addition to other send frames, according to Determine that other send the second quantity of the subframe that the base station LAA occupies in frame, wherein NiIt is preceding
One sends the number of sub frames that the base station LAA occupies in frame, Ni+1For this, other send the number of sub frames that the base station LAA occupies in frame, before γ is
One sends the confirmation message number obtained after data transmission in frame and NiRatio.
Preferably, the channel detection module includes:
Acquisition submodule, for obtaining the channel energy of each subframe in detection frame；
Judging submodule, for judging whether the channel energy of the subframe is greater than and setting for each subframe in detection frame
Fixed energy threshold, if it is, determining that the subframe is occupied by WiFi website；
Submodule is determined, for number of sub frames total in the quantity and the detection frame according to the subframe occupied by WiFi website
Amount, determines current WiFi website in the detection frame to the holding time ratio α of channel.
As seen from the above technical solution, the embodiment of the present invention is when there are data to be transmitted, first by channel
Detection obtains current WiFi website to the holding time ratio α of channel, then according to the α and the service class of data to be transmitted
Type obtains the sub-frame number that the base station LAA occupies in first transmission frame in sending cycle by presetting the first formula；And it is directed to
Other in sending cycle in addition to first sends frame send the sub-frame number that the base station LAA in frame occupies, then according to previous
It sends the confirmation message number obtained after data transmission in frame and default second formula is determined, therefore LAA can be taken into account
Fairness and efficiency when base station and WiFi website multipling channel.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.It should be evident that the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of flow diagram of the channel multiplexing method of unauthorized frequency range provided in an embodiment of the present invention；
Fig. 2 is WiFi website holding time schematic diagram in channel detection process；
Fig. 3 is a kind of structural schematic diagram of sending cycle in the embodiment of the present invention；
Fig. 4 is a kind of flow diagram of step S101 in Fig. 1；
Fig. 5 is the process schematic of the base station LAA and two WiFi website multipling channels；
Fig. 6 is a kind of structural schematic diagram of the channel multiplexing device of unauthorized frequency range provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of the channel multiplexing device of another unauthorized frequency range provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Whole description.Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiments shall fall within the protection scope of the present invention.
The embodiment of the invention provides the channel multiplexing methods and device of a kind of unauthorized frequency range, can take into account the base station LAA
With the fairness and efficiency when WiFi website multipling channel.Operator can achieve network capacity using the unauthorized resource of frequency range
The purpose of shunting, but will be in view of the occupancy situation of other access technologies in current unauthorized frequency range.Other access technology packets
Include Wireless Fidelity WiFi, bluetooth Bluetooth and ZigBee protocol ZigBee, but mainly WiFi, thus the embodiment of the present invention with
WiFi website is multiplexing object.
Below by specific embodiment, the present invention is described in detail.
Referring to Fig. 1, which is a kind of flow chart of the channel multiplexing method of unauthorized frequency range provided in an embodiment of the present invention,
It includes the following steps:
Step S101: when there are data to be transmitted, the channel energy in detection frame is detected, obtains current WiFi
Website is in the detection frame to the holding time ratio α of channel.
Specifically, when channel is occupied by WiFi website, the energy of channel be will increase.If detecting that channel energy is more than
Certain energy threshold, then can determine that channel is occupied by WiFi website.Channel energy in detection frame is detected, it can
Duration is detected with total to obtain the accumulative Channel holding time of WiFi website, and then current WiFi website can be obtained in the detection frame
The interior holding time ratio α to channel, as shown in Figure 2.
It specifically can be there are many embodiment, for example, can will test frame is divided into 100 parts, to the channel in every portion
Energy is detected, and the number that channel energy is more than threshold value is obtained, using the number and the ratio of total number as WiFi website pair
The holding time ratio of channel；Energy measuring can also be carried out by certain rule extraction multiple periods out of detection frame.Every kind of side
The characteristics of formula, is different, and former mode is since the detection process to channel divides very thin, therefore obtained WiFi website is to channel
Holding time ratio it is more acurrate；Method of the latter approach due to using sampling observation, therefore detection process is faster, it is more efficient.
Step S102: according to α, the type of service of data to be transmitted and default first formula, the is obtained in sending cycle
One is sent the first quantity of the subframe that the base station LAA occupies in frame, and is carried out data transmission using the subframe of first quantity.
Wherein, sending cycle includes a detection frame and multiple transmission frames, and each frame includes multiple subframes of identical quantity,
Each subframe is a data frame, as shown in Figure 3.
Specifically, according to α and formula S=λ E+ (1- λ) F, LAA in first transmission frame is obtained in sending cycle
First quantity of the subframe that base station occupies.Wherein, the first quantity is N corresponding value when being maximized above-mentioned S,M is the sub-frame number that each frame includes in sending cycle；N
For the integer for being greater than zero less than M, λ is constant value corresponding with the type of service of data to be transmitted, and value range is 0~1.When
When the type of service (such as video class) of data to be transmitted has higher requirements to message transmission rate, λ should take the larger value；When to be transmitted
When the type of service (such as FTP class) of data is less high to data transmission rates demands, λ should take smaller value.N takes 0 value to indicate WiFi
The complete busy channel of website, N take M value to indicate the complete busy channel in the base station LAA, this does not meet fairness and efficiency either way
Property, therefore N does not take 0 or M value.
It is above-mentionedIt is the factor for characterizing efficiency,It is that characterization is public
The factor of levelling.The measurement of fair principle using Raj Jain fairness exponential formula wherein xiIndicate variable.In embodiments of the present invention, i=2, x1To send in frame
The sub-frame number N, x that the base station LAA occupies2The sub-frame number M-N occupied for WiFi website.
Step S103: for other transmission frames in the sending cycle in addition to first sends frame, according to previous hair
The confirmation message number obtained after data transmission in frame and default second formula are sent, determines that other send the base station LAA in frame and account for
Second quantity of subframe, and being carried out data transmission using the subframe of second quantity, wherein the data of each subframe by
Function receives corresponding confirmation message when receiving.
Specifically, in the sending cycle except first send frame in addition to other send frames, according toDetermine that other send the second quantity of the subframe that the base station LAA occupies in frame,
In, NiFor the number of sub frames that the base station LAA in previous transmission frame occupies, Ni+1For this, other send the subframe that the base station LAA occupies in frame
Number, γ are the confirmation message number obtained after data transmission in previous transmission frame and NiRatio.
γ characterizes the transmission situation of data in previous transmission frame.If the previous data for sending the base station LAA in frame
Transmission and the data transmission of WiFi website have collision, then situations such as data frame of the base station LAA transmission may be lost, in turn
It is few when the confirmation message number received can be than no transmission collision.Therefore, adjustable according to the value of γ and above-mentioned formula
The occupation proportion for sending the base station LAA and WiFi website in frame, keeps data transmission procedure more fair.
Preferably, a sending cycle may include 1 detection frame and 4 transmission frames, each frame may include 10 sons
Frame.It can be 10ms if a transmission frame or a detection frame if calculated according to a subframe, that is, data frame 1ms, one
Sending cycle can be 50ms.Certainly, a sending cycle also may include 1 detection frame and 3 transmission frames or 1 detection
Frame and 5 transmission frames or 1 detection frame and 6 transmission frames etc..
If detected before each transmission frame of sending cycle to channel occupancy situation, i.e., in sending cycle
Detection frame comprising identical quantity and transmission frame, since the base station LAA cannot transmit data, this mode meeting in detection process
The base station LAA is reduced to the occupation proportion of channel, and lasting detection process can waste more electric energy.
As shown in the above, the quantity setting of detection frame and transmission frame will affect the base station LAA and WiFi in sending cycle
Efficiency and fairness when website is to channel multiplexing.In the efficiency for not only considering that data are transmitted in the base station LAA, but also take into account LAA
Under the considerations of base station and WiFi website are to the fairness of channel multiplexing, preferable mode is, can be in a sending cycle
One detection frame and an appropriate number of transmission frame are set.
In practical applications, in each transmission frame in the subframe that carries out data transmission of WiFi website, the base station LAA can be with
Transmit vacant data frames.These vacant data frames may include major-minor synchronization signal, Physical Broadcast Channel, reference signal (demodulation,
Channel quality information, feedback information) etc..When sending vacant data frames, the channel energy that WiFi website detects is very low, Bu Huiying
WiFi website is rung to carry out data transmission, and LAA can also make full use of channel, improve the utilization rate of channel.
As seen from the above-described embodiment, the embodiment of the present invention obtains and works as by being detected to channel energy in detection frame
Preceding WiFi website obtains in sending cycle first accordingly and sends the son that the base station LAA occupies in frame to the occupancy situation of channel
The sub-frame number that number of frames and WiFi website occupy；Other send the sub-frame number of the base station LAA occupancy in frame according to previous
The data transmission scenarios of the base station LAA in frame are sent to determine, the justice when base station LAA and WiFi website multipling channel can be taken into account
Property and efficiency.
In another embodiment of the present invention, the step S101 in embodiment of the method shown in FIG. 1, in detection frame
Channel energy is detected, and obtains current WiFi website in the detection frame to the holding time ratio α of channel, can be according to
Process shown in Fig. 4 carries out, and detailed process includes the following steps:
Step S401: the channel energy of each subframe in detection frame is obtained
Step S402: for each subframe in detection frame, judge whether the channel energy of the subframe is greater than the energy of setting
Threshold value is measured, if it is, determining that the subframe is occupied by WiFi website.
Step S403: it according to sub-frame number total in the quantity of the subframe occupied by WiFi website and the detection frame, determines
Current WiFi website is in the detection frame to the holding time ratio α of channel.
In the present embodiment, channel is detected as unit of the subframe in detection frame, judges the letter in each subframe
Whether road energy is greater than the energy threshold of setting, determines the sub-frame number occupied by WiFi website, so that it is determined that the current station WiFi
Point to the holding time ratio α of channel in the detection frame, relative to detection frame inspected by random samples to obtain by such embodiment
α value accuracy it is higher, while decreasing operating quantity, be a kind of preferable embodiment.
It elaborates again below with reference to specific example to the application.
Process schematic referring to Fig. 5, when which is the base station LAA and neighbouring two WiFi website multipling channel.?
In the example, it is assumed that a sending cycle includes 1 detection frame and 4 transmission frames, and each frame includes 10 subframes, i.e. M is 10,
The period that the base station LAA is used for transmission data in figure indicates that the period that WiFi website is used for transmission data is indicated with CP with DL, when DL
It include multiple subframes in section and CP period.4 transmission frames are illustrated only in Fig. 5, do not show detection frame.Detailed process is as follows:
It is obtained it is assumed that there are video class data to be transmitted for the base station LAA by being detected to the channel energy in detection frame
It is 0.6 to the holding time ratio α of channel that current WiFi website, which is obtained, in the detection frame.
Since the data to be transmitted business of the base station LAA is video class, therefore λ can be set as 0.7, according to the value 0.6 of α, λ
Value 0.7 and default first formula, obtaining and sending the sub-frame number that the base station LAA occupies in frame 1 in sending cycle is 5, then
Sending the sub-frame number that WiFi website occupies in frame 1 is also 5.
The base station LAA sends data to user in the DL period for sending frame 1, since the DL phase channel quality for sending frame 1 is good
Well and without the interference of WiFi website, user has received all subframes of the base station LAA transmission and returns to all confirmation messages, γ
Value be 1, according to default second formula can will to have 6 subframes in sending frame 2 be the DL period, 4 subframes are the CP period.
In the CP period competitive channel for sending frame 1, WiFi 1 and 2 alternate transport one of WiFi take second place WiFi 1 and WiFi 2
Afterwards, 1 transmission time of WiFi have passed through the DL period for sending frame 2, interfere with each other with the base station LAA, and packet loss phenomenon occurs for the base station LAA,
The base station LAA returns to 3 confirmation messages after transmitting 6 subframes, and the value of γ is 0.5, therefore the DL period sent in frame 3 is adjusted to 5
A subframe, CP period are 5 subframes.
WiFi 1 and WiFi 2 is in the CP period competitive channel for sending frame 2,2 Successful transmissions data of WiFi.WiFi1 and
WiFi 2 detects channel busy at the beginning of sending the end time of frame 2, sending frame 3, does not transmit data both.
The base station LAA is occupying the DL period transmission data for sending frame 3 at this time, it is interference-free, is successfully transmitted all subframes, the value of γ
It is 1, therefore can obtains sending the DL period in frame 4 to should be 6 subframes, the CP period is 4 subframes.
The sending cycle terminates, and when next sending cycle starts, carries out energy measuring to channel again.
By examples detailed above as it can be seen that first of sending cycle sends the number of sub frames that the base station LAA and WiFi website occupy in frame
Amount is set according to the holding time ratio of the WiFi website obtained in detection frame and the data to be transmitted type of service of the base station LAA
Fixed, other send the data transmission scenarios that frames then send the base station LAA in frame according to upper one and determine, taken into account the base station LAA with
Efficiency and fairness when WiFi website multipling channel.
Referring to Fig. 6, which is that a kind of structure of the channel occupancy device of unauthorized frequency range provided in an embodiment of the present invention is shown
It is intended to, corresponding with embodiment of the method shown in Fig. 1, described device includes:
Channel detection module 601, for being detected to the channel energy in detection frame when there are data to be transmitted,
Current WiFi website is obtained in the detection frame to the holding time ratio α of channel.
First transmission module 602, for obtaining according to the type of service of the α, data to be transmitted and default first formula
The first quantity of the subframe that the base station LAA occupies in first transmission frame in sending cycle is obtained, and using the subframe of first quantity
Carry out data transmission.
Wherein, sending cycle includes a detection frame and multiple transmission frames, and each frame includes multiple subframes of identical quantity.
In the present embodiment, a sending cycle may include 1 detection frame and 4 transmission frames, and each frame may include 10 subframes.
Specifically, it according to S=λ E+ (1- λ) F, obtains in sending cycle first and sends what the base station LAA in frame occupied
First quantity of subframe, wherein first quantity is N corresponding value when the S is maximized,M is the sub-frame number that each frame includes in sending cycle；N
For the integer for being greater than zero less than M, λ is constant value corresponding with the type of service of data to be transmitted, and value range is 0~1.
Second transmission module 603, for for other transmission frames in the sending cycle in addition to first sends frame, root
According to the confirmation message number and default second formula obtained after data transmission in previous transmission frame, determine that other send in frame
Second quantity of the subframe that the base station LAA occupies, and carried out data transmission using the subframe of second quantity, wherein each subframe
Data receive corresponding confirmation message when being successfully received.
Specifically, in the sending cycle except first send frame in addition to other send frames, according toDetermine that other send the second quantity of the subframe that the base station LAA occupies in frame,
In, NiFor the number of sub frames that the base station LAA in previous transmission frame occupies, Ni+1For this, other send the subframe that the base station LAA occupies in frame
Number, γ are the confirmation message number obtained after data transmission in previous transmission frame and NiRatio.
In practical applications, in each transmission frame in the subframe that carries out data transmission of WiFi website, the base station LAA can be with
Transmit vacant data frames.
Referring to Fig. 7, which is another apparatus structure schematic diagram corresponding with Fig. 6 illustrated embodiment, in the device, first
Transmission module 702, the second transmission module 703 are identical as the first transmission module 602, the second transmission module 603 in Fig. 6 respectively,
Details are not described herein.Channel detection module 701 specifically includes:
Acquisition submodule 7011, for obtaining the channel energy of each subframe in detection frame；
Judging submodule 7012, for judging whether the channel energy of the subframe is big for each subframe in detection frame
In the energy threshold of setting, if it is, determining that the subframe is occupied by WiFi website；
Submodule 7013 is determined, for subframe total in the quantity and the detection frame according to the subframe occupied by WiFi website
Quantity determines current WiFi website in the detection frame to the holding time ratio α of channel.
Since the embodiment of the method that above-mentioned apparatus embodiment is the channel occupancy based on unauthorized frequency range obtains, with the party
Method technical effect having the same, therefore details are not described herein for the technical effect of Installation practice.
For device embodiment, since it is substantially similar to the method embodiment, related so describing fairly simple
Place illustrates referring to the part of embodiment of the method.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or any other variant be intended to it is non-
It is exclusive to include, so that the process, method, article or equipment for including a series of elements not only includes those elements,
It but also including other elements that are not explicitly listed, or further include solid by this process, method, article or equipment
Some elements.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including
There is also other identical elements in the process, method, article or equipment of the element.
It will appreciated by the skilled person that all or part of the steps in above embodiment is can to pass through journey
What sequence instructed relevant hardware to complete, the program can store in computer-readable storage medium.It is designated herein
Storage medium refers to ROM/RAM, magnetic disk, CD etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution, improvement and etc. done within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (6)
1. a kind of channel multiplexing method of unauthorized frequency range, which is characterized in that it is applied to authorization and assists the access base station LAA, it is described
Method includes:
When there are data to be transmitted, the channel energy in detection frame is detected, obtains current WiFi website in the inspection
Survey the holding time ratio α in frame to channel；
According to the α, the type of service of data to be transmitted and default first formula, first transmission frame in sending cycle is obtained
First quantity of the subframe that the middle base station LAA occupies, and carried out data transmission using the subframe of first quantity；Wherein, week is sent
Phase includes a detection frame and multiple transmission frames, and each frame includes multiple subframes of identical quantity；
For other transmission frames in the sending cycle in addition to first sends frame, transmitted according to data in previous transmission frame
The confirmation message number obtained afterwards and default second formula determine the second of the subframe that the base station LAA occupies in other transmission frames
Quantity, and carried out data transmission using the subframe of second quantity, wherein the data of each subframe receive when being successfully received
Corresponding confirmation message；
Wherein, described according to the α, the type of service of data to be transmitted and default first formula, obtain in sending cycle the
One sends the first quantity of the subframe that the base station LAA occupies in frame, comprising:
According to S=λ E+ (1- λ) F, the first of the subframe that the base station LAA occupies in first transmission frame in sending cycle is obtained
Quantity, wherein first quantity is N corresponding value when the S is maximized,M is the sub-frame number that each frame includes in sending cycle；N
For the integer for being greater than zero less than M, λ is constant value corresponding with the type of service of data to be transmitted, and value range is 0~1；
It is described to send the confirmation message number obtained after data transmission in frame and default second formula according to previous, determine it
He sends the second quantity of the subframe that the base station LAA occupies in frame, comprising:
For in the sending cycle except first send frame in addition to other send frames, according to Determine that other send the second quantity of the subframe that the base station LAA occupies in frame, wherein NiIt is preceding
One sends the number of sub frames that the base station LAA occupies in frame, Ni+1For this, other send the number of sub frames that the base station LAA occupies in frame, before γ is
One sends the confirmation message number obtained after data transmission in frame and NiRatio.
2. the method according to claim 1, wherein the sending cycle includes 1 detection frame and 4 transmissions
Frame, each frame include 10 subframes.
3. being obtained the method according to claim 1, wherein the channel energy in detection frame detects
Current WiFi website is obtained in the detection frame to the holding time ratio α of channel, comprising:
Obtain the channel energy of each subframe in detection frame；
For each subframe in detection frame, judge whether the channel energy of the subframe is greater than the energy threshold of setting, if so,
Then determine that the subframe is occupied by WiFi website；
According to sub-frame number total in the quantity of the subframe occupied by WiFi website and the detection frame, determine that current WiFi website exists
To the holding time ratio α of channel in the detection frame.
4. the method according to claim 1, wherein further include:
Vacant data frames are transmitted in the subframe that WiFi website carries out data transmission in each transmission frame.
5. a kind of channel occupancy device of unauthorized frequency range, which is characterized in that it is applied to authorization and assists the access base station LAA, it is described
Device includes:
Channel detection module obtains current for being detected when there are data to be transmitted to the channel energy in detection frame
WiFi website is in the detection frame to the holding time ratio α of channel；
First transmission module, for being sent according to the type of service of the α, data to be transmitted and default first formula
First sends the first quantity of the subframe that the base station LAA occupies in frame in period, and is counted using the subframe of first quantity
According to transmission；Wherein, sending cycle includes a detection frame and multiple transmission frames, and each frame includes multiple subframes of identical quantity；
Second transmission module, other transmission frames for being directed in the sending cycle in addition to first sends frame, according to previous
The confirmation message number obtained after data transmission in a transmission frame and default second formula, determine that other send LAA base in frame
Second quantity of the subframe occupied of standing, and carried out data transmission using the subframe of second quantity, wherein the data of each subframe
Corresponding confirmation message is received when being successfully received；
Wherein, first transmission module is specifically used for:
According to S=λ E+ (1- λ) F, the first of the subframe that the base station LAA occupies in first transmission frame in sending cycle is obtained
Quantity, wherein first quantity is N corresponding value when the S is maximized,M is the sub-frame number that each frame includes in sending cycle；N
For the integer for being greater than zero less than M, λ is constant value corresponding with the type of service of data to be transmitted, and value range is 0~1；
Second transmission module is specifically used for:
For in the sending cycle except first send frame in addition to other send frames, according to Determine that other send the second quantity of the subframe that the base station LAA occupies in frame, wherein NiIt is preceding
One sends the number of sub frames that the base station LAA occupies in frame, Ni+1For this, other send the number of sub frames that the base station LAA occupies in frame, before γ is
One sends the confirmation message number obtained after data transmission in frame and NiRatio.
6. device according to claim 5, which is characterized in that the channel detection module includes:
Acquisition submodule, for obtaining the channel energy of each subframe in detection frame；
Judging submodule, for judging whether the channel energy of the subframe is greater than setting for each subframe in detection frame
Energy threshold, if it is, determining that the subframe is occupied by WiFi website；
Determine submodule, for sub-frame number total in the quantity and the detection frame according to the subframe occupied by WiFi website, really
Settled preceding WiFi website is in the detection frame to the holding time ratio α of channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510917465.8A CN105392144B (en) | 2015-12-10 | 2015-12-10 | A kind of channel multiplexing method and device of unauthorized frequency range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510917465.8A CN105392144B (en) | 2015-12-10 | 2015-12-10 | A kind of channel multiplexing method and device of unauthorized frequency range |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105392144A CN105392144A (en) | 2016-03-09 |
| CN105392144B true CN105392144B (en) | 2019-02-19 |
Family
ID=55423884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510917465.8A Active CN105392144B (en) | 2015-12-10 | 2015-12-10 | A kind of channel multiplexing method and device of unauthorized frequency range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105392144B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105682102B (en) * | 2016-03-17 | 2019-03-15 | 北京北方烽火科技有限公司 | One kind exempting from authorization channel contention parameter generation method and device |
| EP3425950B1 (en) * | 2016-04-01 | 2020-01-29 | Huawei Technologies Co., Ltd. | Uplink data transmission method and apparatus |
| CN107645729A (en) * | 2016-07-20 | 2018-01-30 | 中兴通讯股份有限公司 | Authorize collocation method, the apparatus and system of frequency spectrum auxiliary access LAA frequencies |
| CN107222445B (en) * | 2017-06-22 | 2019-11-26 | 中国人民解放军国防科学技术大学 | A kind of improved unitary transformation pretreatment OFDM transmission method |
| CN117042039B (en) * | 2023-08-23 | 2024-05-07 | 东莞恒泰数字技术有限公司 | Method for solving channel blocking of intelligent Internet of things link system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2757850A1 (en) * | 2013-01-16 | 2014-07-23 | Telefonaktiebolaget L M Ericsson (Publ) | Radio communication in unlicensed band |
| CN104333873A (en) * | 2014-11-28 | 2015-02-04 | 东莞宇龙通信科技有限公司 | Channel detection method and system, as well as equipment and terminal having functions of base station |
| CN104796920A (en) * | 2014-01-16 | 2015-07-22 | 电信科学技术研究院 | Data transmission method, base station and terminal equipment |
| CN104796908A (en) * | 2014-01-20 | 2015-07-22 | 苹果公司 | WLAN and LTE coexistence in unlicensed radio frequency bands |
| CN105101446A (en) * | 2015-06-30 | 2015-11-25 | 宇龙计算机通信科技(深圳)有限公司 | Conflict avoiding method and device for unlicensed bands |
-
2015
- 2015-12-10 CN CN201510917465.8A patent/CN105392144B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2757850A1 (en) * | 2013-01-16 | 2014-07-23 | Telefonaktiebolaget L M Ericsson (Publ) | Radio communication in unlicensed band |
| CN104796920A (en) * | 2014-01-16 | 2015-07-22 | 电信科学技术研究院 | Data transmission method, base station and terminal equipment |
| CN104796908A (en) * | 2014-01-20 | 2015-07-22 | 苹果公司 | WLAN and LTE coexistence in unlicensed radio frequency bands |
| CN104333873A (en) * | 2014-11-28 | 2015-02-04 | 东莞宇龙通信科技有限公司 | Channel detection method and system, as well as equipment and terminal having functions of base station |
| CN105101446A (en) * | 2015-06-30 | 2015-11-25 | 宇龙计算机通信科技(深圳)有限公司 | Conflict avoiding method and device for unlicensed bands |
Non-Patent Citations (2)
| Title |
|---|
| Enabling the coexistence of LTE and Wi-Fi in unlicensed bands;Fuad M. Abinader et.al;《IEEE Communications Magazine》;20141121;第52卷(第11期);全文 |
| 认知无线电技术研究新进展专题讲座(四) 第7讲 LTE-U:LTE与Wi-Fi的共存技术研究分析;方盈峰等;《军事通信技术》;20150925;第36卷(第3期);全文 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105392144A (en) | 2016-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105392144B (en) | A kind of channel multiplexing method and device of unauthorized frequency range | |
| CN104717687B (en) | Method of adjustment, adjustment system and the equipment of channel occupancy probabilities | |
| CN106658584B (en) | Method and apparatus for signal transmission and reception and interference measurement | |
| EP3410761B1 (en) | Base station and transmission method | |
| CN104796986B (en) | A kind of D2D communication means and equipment | |
| US20180076910A1 (en) | Interference discovery for cable modems | |
| CN107040938A (en) | A kind of signal sends the method and user equipment with receiving | |
| EP2804356B1 (en) | Method and apparatus for random access in communication system | |
| US9706575B2 (en) | Multiple access method and system with frequency multiplexing of several request to send messages per source node | |
| EP3041307A1 (en) | Data transmission scheduling method, device and system | |
| JP2013066193A (en) | Synchronous and asynchronous interference management | |
| CN103688586B (en) | Reference signal processing method and user equipment, base station | |
| CN105635017B (en) | A kind of transmission method and equipment of targeting signal | |
| CN101889414A (en) | Mesh deterministic access (mda) procedure in wireless mesh network and wireless device supporting the same | |
| WO2020223378A1 (en) | Methods and apparatus for supporting transmission bursts | |
| WO2018177382A1 (en) | Access method and access device for shared channel | |
| CN101765120A (en) | Method and a device allocating distribution type spectrum resource | |
| CN114223314A (en) | System and method for performing and reporting measurements in a wireless communication network | |
| CN110121177B (en) | Back-off window distributed adjustment method for LTE (Long term evolution) and WiFi (Wireless Fidelity) coexisting network | |
| US20170142752A1 (en) | Systems and methods for detecting nodes or signals of a radio access technology (rat) by a node of another rat | |
| CN110537385A (en) | Detection method, device, equipment and the storage medium of downlink transfer | |
| CN109565692A (en) | Use the ascending transmission method of unlicensed spectrum, resource allocation methods, user equipment and base station | |
| CN103237356B (en) | Selective cognitive access method on basis of quality of channels | |
| CN102413480B (en) | Reverse test coverage method and system | |
| CN102769924B (en) | System scheduling information transmission method, device and base station system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |