CN107566378A - A kind of data frame, data transmission method for uplink and device - Google Patents
A kind of data frame, data transmission method for uplink and device Download PDFInfo
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- CN107566378A CN107566378A CN201710813632.3A CN201710813632A CN107566378A CN 107566378 A CN107566378 A CN 107566378A CN 201710813632 A CN201710813632 A CN 201710813632A CN 107566378 A CN107566378 A CN 107566378A
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Abstract
The present invention proposes a kind of data frame, data transmission method for uplink and device.A kind of data frame, including：The Transmission Time Interval of quantity is set, 2 reference signal channels for being used to transmit pilot signal are comprised at least in each Transmission Time Interval；Wherein, the 1st Transmission Time Interval in the Transmission Time Interval of the setting quantity, in addition to control channel, master sync signal channel, auxiliary synchronous signals channel, broadcast channel, shared channel and protection interval；Each Transmission Time Interval in addition to the 1st Transmission Time Interval, also include control channel respectively, find signaling channel, shared channel and protection interval；2nd time slot of wherein last 1 Transmission Time Interval also includes the access signaling channel of setting quantity.Data are transmitted using data frame format proposed by the present invention, transmitted pilot signal is more, the position of pilot signal transmitted is more flexible, accurately obtains channel estimation value by pilot signal beneficial to communication node, improves network mobility.
Description
Technical field
The present invention relates to broadband MESH network communication technical field, more particularly to a kind of data frame, data transmission method for uplink and
Device.
Background technology
Wireless mesh network (MESH network) is based on cooperating with each other between numerous WAPs in net distribution and assists
Together, there is broadband high-speed and spectral efficient advantage and be widely adopted, be to solve wireless network " last one kilometer " problem
One of key technology.
Pilot signal in the MESH network signal of broadband, can be as the reference signal synchronously positioned, in broadband MESH nets
Transmission pilot signal can effectively improve the handover success rate between different carrier frequency in network, and it is higher to ensure that broadband MESH network has
Mobility.Node in the MESH network of broadband obtains channel estimation value according to the pilot signal of reception.And in prior art
In, designed based on broadband MESH network data frame format, its pilot signal is single and fixed, it is believed that channel value is substantially not
Become.And when channel Doppler frequency displacement is larger, the channel estimation value for the pilot signal acquisition that communication node passes through data packet header
It is inaccurate, causes broadband MESH network performance degradation, the mobility of broadband MESH network is relatively low.
The content of the invention
The defects of based on above-mentioned prior art and deficiency, the present invention propose a kind of data frame, data transmission method for uplink and device,
Data are sent using the data frame, multigroup pilot signal can be sent in multiple symbols of a Transmission Time Interval, make communication
Node can accurately obtain channel estimation value, improve network mobility.
A kind of data frame, including：
The Transmission Time Interval of quantity is set, 2 are comprised at least in each Transmission Time Interval and is used to transmit pilot signal
Reference signal channel；
Wherein, the 1st Transmission Time Interval in the Transmission Time Interval of the setting quantity, in addition to control channel,
Master sync signal channel, auxiliary synchronous signals channel, broadcast channel, shared channel and protection interval；
Each Transmission Time Interval in addition to the 1st Transmission Time Interval, also include control channel respectively, find
Signaling channel, shared channel and protection interval；2nd time slot of wherein last 1 Transmission Time Interval also includes access signal letter
Road.
Preferably, last 1 described in the reference signal channel occupancy in last 1 Transmission Time Interval of the data frame
Frequency resource in the 1st symbol and the 4th symbol of Transmission Time Interval；
The data frame, the reference signal channel of each Transmission Time Interval in addition to last 1 Transmission Time Interval,
The 1st, the 4th, the 8th of each Transmission Time Interval in addition to last 1 Transmission Time Interval and the are taken respectively
Frequency resource in 11 symbols.
Preferably, the reference signal channel of the data frame is pectination reference signal channel.
Preferably, the control channel in the 1st Transmission Time Interval takes the 1st Transmission Time Interval
In the 1st interior symbol, the resource unit in addition to the reference signal channel；
The frequency resource in the 2nd symbol described in the master sync signal channel occupancy in the 1st Transmission Time Interval；
The frequency resource in the 3rd symbol described in the auxiliary synchronous signals channel occupancy in the 1st Transmission Time Interval；
The broadcast channel takes the frequency resource in the 6th symbol in the 1st Transmission Time Interval；
Protection interval in 1st Transmission Time Interval takes last 1 in the 1st Transmission Time Interval
Frequency resource in symbol；
Shared channel in 1st Transmission Time Interval takes the remaining symbol in the 1st Transmission Time Interval
Frequency resource in number；
The control channel in Transmission Time Interval in addition to the 1st Transmission Time Interval, take remove respectively
In 1st symbol of the Transmission Time Interval outside the 1st Transmission Time Interval in addition to the reference signal channel
Resource unit；
It is described to find that signaling channel takes the of Transmission Time Interval in addition to the 1st Transmission Time Interval respectively
Frequency resource in 2 symbols；
Protection interval in the Transmission Time Interval in addition to the 1st Transmission Time Interval, take remove respectively
Frequency resource in last 1 symbol of Transmission Time Interval outside 1st Transmission Time Interval；
Shared channel in the Transmission Time Interval in addition to the 1st Transmission Time Interval takes except institute respectively
State the frequency resource in the remaining symbol of the Transmission Time Interval outside the 1st Transmission Time Interval.
Preferably, the control channel in the 1st Transmission Time Interval takes the 1st Transmission Time Interval
In the 1st interior symbol, the resource unit in addition to the reference signal channel；
The money of centre 72 of the 2nd symbol described in the master sync signal channel occupancy in the 1st Transmission Time Interval
Source unit；
The money of centre 72 of the 3rd symbol described in the auxiliary synchronous signals channel occupancy in the 1st Transmission Time Interval
Source unit；
The broadcast channel takes the resource list of centre 180 of the 6th symbol in the 1st Transmission Time Interval
Member；
Protection interval in 1st Transmission Time Interval takes last 1 in the 1st Transmission Time Interval
All resource units of symbol；
Shared channel in 1st Transmission Time Interval takes the remaining symbol in the 1st Transmission Time Interval
All resource units in number；
The control channel in Transmission Time Interval in addition to the 1st Transmission Time Interval takes except institute respectively
State the money in addition to the reference signal channel in the 1st symbol of the Transmission Time Interval outside the 1st Transmission Time Interval
Source unit；
It is described to find that signaling channel takes the of Transmission Time Interval in addition to the 1st Transmission Time Interval respectively
The resource unit of centre 72 of 2 symbols；
Protection interval in the Transmission Time Interval in addition to the 1st Transmission Time Interval, take remove respectively
All resource units of last 1 symbol of Transmission Time Interval outside 1st Transmission Time Interval；
The shared channel of the Transmission Time Interval in addition to the 1st Transmission Time Interval takes except described respectively
All resource units in the remaining symbol of Transmission Time Interval outside 1st Transmission Time Interval.
A kind of data transmission method for uplink, applied to the communication node of broadband MESH network, the communication node stores above-mentioned
Invent the format information of the data frame proposed, and itself available data frame TTI information；
This method includes：
According to itself available data frame TTI information of storage, when determining itself available data frame transfer
Between be spaced；
According to the format information of the data frame, data are sent in itself available data frame TTI
Information；Wherein, it is described to send data message in itself available data frame TTI, be included in it is described itself
Pilot signal transmitted in the reference signal channel of available data frame TTI.
Preferably, when the communication node is host node, itself available data frame TTI is number
According to the 1st Transmission Time Interval of frame；
Wherein, the data message that sent in itself available data frame TTI also includes：
Broadcast singal is sent in the broadcast channel of itself available data frame TTI.
Preferably, it is described that broadcast letter is sent in the broadcast channel of itself available data frame TTI
Number, including：
Transmission Time Interval scheduling letter is sent in the broadcast channel of itself available data frame TTI
Breath.
A kind of data sending device, applied to the communication node of broadband MESH network, the device includes：
Data storage cell, the format information of the data frame for storing the invention described above proposition, and itself is available
Data frame TTI information；
Information confirmation unit, for itself the available data frame TTI information according to storage, determine itself
Available data frame TTI；
Data transmission unit, for the format information according to the data frame, in itself available data frame transfer
Data message is sent in time interval；Wherein, it is described to send data in itself available data frame TTI
Information, it is included in pilot signal transmitted in the reference signal channel of itself available data frame TTI.
Preferably, when described device is applied to the host node of broadband MESH network, the data storage cell storage
Itself available data frame TTI is the 1st Transmission Time Interval of data frame；
Wherein, when the data transmission unit sends data in itself available data frame TTI,
Also particularly useful for：
Broadcast singal is sent in the broadcast channel of itself available data frame TTI.
Preferably, the data transmission unit is in the broadcast channel of itself available data frame TTI
When sending broadcast singal, it is specifically used for：
Transmission Time Interval scheduling letter is sent in the broadcast channel of itself available data frame TTI
Breath.
A kind of data sending device, applied to the communication node of broadband MESH network, the device includes：
Memory and processor；
Wherein, the memory is connected with the processor, caused by storage program and program operation process
Data；
The processor, for by running the program in the memory, realizing following functions：
Store the format information for the data frame that the invention described above proposes, and itself available data frame TTI
Information；According to itself available data frame TTI information of storage, itself available data frame transfer time is determined
Interval；According to the format information of the data frame, data letter is sent in itself available data frame TTI
Breath；Wherein, it is described to send data message in itself available data frame TTI, be included in it is described itself can
Pilot signal transmitted in the reference signal channel of data frame TTI.
Preferably, when described device is applied to the host node of broadband MESH network, what the processor stored itself can
Data frame TTI is the 1st Transmission Time Interval of data frame；
Wherein, it is also specific when the processor sends data in itself available data frame TTI
For：
Broadcast singal is sent in the broadcast channel of itself available data frame TTI.
Data frame proposed by the present invention, include the Transmission Time Interval of setting quantity, in each Transmission Time Interval at least
Include 2 reference signal channels for being used to transmit pilot signal；Wherein, the 1st in the Transmission Time Interval of the setting quantity
Individual Transmission Time Interval, in addition to control channel, master sync signal channel, auxiliary synchronous signals channel, broadcast channel, shared channel
And protection interval；Transmission Time Interval in addition to the 1st Transmission Time Interval, also include control channel respectively, find
Signaling channel, shared channel and protection interval；2nd time slot of wherein last 1 Transmission Time Interval also includes setting quantity
Access signaling channel.Data, in each Transmission Time Interval, at least 2 are transmitted using data frame format proposed by the present invention
Individual channel can be used to pilot signal transmitted, and transmitted pilot signal is more, the position of pilot signal transmitted is more flexible, beneficial to logical
Believe that node obtains channel estimation value by pilot signal, improve network mobility.Also, data frame proposed by the present invention can use
In synchronous signal transmission, signal and access signal are found, therefore supports to build synchronous MESH network, compared to asynchronous MESH nets
Network, its network delay are smaller.
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 embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of structural representation of data frame provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic flow sheet of data transmission method for uplink provided in an embodiment of the present invention；
Fig. 3 is a kind of data frame TTI division schematic diagram provided in an embodiment of the present invention；
Fig. 4 is a kind of data frame TTI configuration schematic diagram provided in an embodiment of the present invention；
Fig. 5 is a kind of structural representation of data sending device provided in an embodiment of the present invention；
Fig. 6 is the structural representation of another data sending device provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Shown in Figure 1 the embodiment of the invention discloses a kind of data frame, the data frame includes：
The Transmission Time Interval of quantity is set, 2 are comprised at least in each Transmission Time Interval and is used to transmit pilot signal
Reference signal channel；
Specifically, as shown in figure 1, the embodiment of the present invention propose data frame structure design in, each data frame
Time span is n milliseconds, it is specific be divided into setting quantity again Transmission Time Interval (Transmission Time Interval,
TTI).In embodiments of the present invention, as shown in figure 1, data frame is divided into n Transmission Time Interval T0~Tn-1, when each transmitting
Between at intervals of 1ms.Each TTI includes 2 slot s lot, and each slot time spans are 0.5ms.Each corresponding 1 transmission of TTI
Node and multiple receiving nodes, sending node send multi-group data in a manner of frequency division multiplexing in the TTI that itself takes, every group
The corresponding receiving node of data.
Wherein, the quantity n for the Transmission Time Interval that data frame is included value is limited to following factor：1st, n values should
The maximum node number accommodated more than broadband MESH network, 1 TTI hair can be at least taken to ensure each node in every frame
Send data.2nd, n values are bigger, and multihop network delay is bigger, and the time that detection synchronizing signal needs are spent is longer, and performance is poorer,
Therefore, n is no more than 20 in principle.
It should be strongly noted that the structure design of the data frame proposed based on the embodiments of the present invention, in the present invention
In each Transmission Time Interval for the data frame that embodiment proposes, few more than 2 reference signal is respectively provided to
(Reference Signal, RS) channel, for transmitting pilot signal.The 1st and the 4th of last TTI in specific such as figure
Shown in pectination dash area in pectination dash area in individual symbol, and other TTI the 1/4/8/11st symbol.It is based on
Above-mentioned setting, in each TTI, all at least 2 RS channels are used to transmit pilot channel.Because each TTI is used for a section
Point sends data, and therefore, each node can send multigroup pilot signal when sending data, for prior art,
The pilot signal that communication node is sent is more, and the position selection of pilot signal is more flexible, and the node of received data packet can be more
Channel estimation value is accurately obtained by pilot signal so that the mobility of broadband MESH network is stronger, and network transmission speed is more
It is high.
Wherein, the 1st Transmission Time Interval in the Transmission Time Interval of the setting quantity, in addition to control channel,
Master sync signal channel, auxiliary synchronous signals channel, broadcast channel, shared channel and protection interval；
Each Transmission Time Interval in addition to the 1st Transmission Time Interval, also include control channel respectively, find
Signaling channel, shared channel and protection interval；2nd time slot of wherein last 1 Transmission Time Interval also includes access signal letter
Road.
Specifically, the 1st TTI of the data frame that the embodiment of the present invention proposes is commonly assigned to the main section of broadband MESH network
Point uses.As shown in figure 1, in the 1st Transmission Time Interval T0 of data frame (TTi (i=0)), it is additionally provided with：
Control channel (Control Channel, CCH), such as the resource removed shown in dash area in figure in the 1st symbol
Unit, for carrying the modulation coding mode of data channel (shared channel), the running time-frequency resource position of data channel, pilot signal
With the information such as the difference power of data-signal；
Master sync signal (Primary Synchronization Signal, PSS) channel, as in figure in the 2nd symbol
Shown in dash area, host node sends out 1 master sync signal per frame in PSS channels, and remaining node is according to the main synchronization received
Signal acquisition MESH network frame boundaries；
Auxiliary synchronous signals (Secondary Synchronization Signal, SSS) channel, such as the 3rd symbol in figure
Shown in interior dash area, host node sends out 1 auxiliary synchronous signals per frame in SSS channels, and remaining node is auxiliary same according to what is received
Walk signal acquisition MESH network ID number；
Broadcast channel (Broadcast Channel, BCH), as shown in dash area in the 6th symbol in figure, host node
1 broadcast singal is sent out by broadcast channel per frame, broadcast singal carrying frame number, network bandwidth, whether current network, which allows, is accessed
Etc. essential information；
Shared channel (Shared Channel, SCH), as shown in non-shaded portion in figure, SCH is used to carry data letter
Breath, support QPSK/16QAM/64QAM modulation, transmission antenna diversity and transmission antenna space division multiplexing；
Protection interval (Guard Period, GP), positioned at last 1 symbol of TTI, such as last 1 symbol shadow part in figure
Shown in point, as the guard time interval between two TTI, switch specifically for transmission-reception, prevent continuous two TTI numbers
According to sending overlap.
Accordingly, the TTI in addition to the 1st TTI for the data frame that the embodiment of the present invention proposes, is respectively allocated to broadband
It is each from node use in MESH network.It is shown in Figure 1, (it is specially TTi (i in data frame TTI T1~Tn-1
=1~n-1)) in, it is additionally provided with：
Control channel (Control Channel, CCH), such as the non-shadow of the 1st symbol in TTi (i=1~n-1) in figure
Shown in part, for carrying the modulation coding mode of data channel (shared channel), the running time-frequency resource position of data channel, pilot tone
The information such as the difference power of signal and data-signal；
It was found that signal (Discovery Signal, DIS) channel, such as the 2nd symbol in TTi (i=1~n-1) in figure
Shown in dash area, each sent from node in each TTI DIS channels and find signal (it was found that signal is similar to master together
Signal is walked, if host node have sent synchronizing signal in the TTI that itself takes, signal is found without retransmiting), receive
Node judges whether the node in network is neighbor node according to the TTI borders found at signal acquisition receiver；
Shared channel (Shared Channel, SCH), as shown in non-shaded portion in TTi (i=1~n-1) in figure, SCH
For carrying data message, QPSK/16QAM/64QAM modulation, transmission antenna diversity and transmission antenna space division multiplexing are supported；
Protection interval (Guard Period, GP), last 1 symbol in TTi in figure (i=1~n-1), in figure
It is specific to use as the guard time interval between two TTI shown in TTi (i=1~n-1) last 1 symbol dash area
Switch in transmission-reception, prevent continuous two TTI data sending overlaps；
Signal (Access Signal) channel is accessed, positioned at last 1 TTI of data frame the 2nd time slot, for details, reference can be made to
Shown in Fig. 1, the 1st slot of last 1 TTI of 1 frame sends business datum, and the 2nd slot sends access signal Access
Signal, between access signal and business datum, protection interval is set, avoids accessing signal and business datum generation interference is mixed
It is folded.The node of network to be added sends access signal by accessing signaling channel, and host node determines whether according to access signal
New node accesses, and searches for access signal correlation peak location, according to the position adjustment access node frame boundaries so that in network
The transmission frame boundaries basic synchronization of all nodes.Specifically, host node sends synchronizing signal PSS/SSS and broadcast in the 1st TTI
Signal, network node to be accessed obtains reception synchronizing information by detecting PSS/SSS/ broadcast singals, then last 1 in 1 frame
It is concurrent that TTI the 2nd slot (from multigroup frequency division Access signal channels) randomly chooses 1 Access signal channel
Access signal are sent, host node detection Access signal, Timing Advance is calculated and is transmitted to network node to be accessed,
Final network node to be accessed obtains sends synchronizing information with host node identical.
It is further to note that the length of each symbol for the data frame that the embodiment of the present invention proposes, subcarrier spacing,
Sub-carrier resources unit number, circulating prefix-length etc., it is identical with the frame format of the descending general cyclic prefix of LTE, and pilot tone
Interval setting is also identical with LTE descending pilot frequency interval settings, is no longer described in detail herein.Based on above-mentioned setting, in broadband MESH
When in network using the data frame transfer data of proposition of the embodiment of the present invention, broadband MESH network is set to possess LTE downlink communication nets
The performance of network, its signal transmission distance is farther, and message transmission rate is higher, and network mobility is more preferable.This frame structure is supported from group
Knit the structure of MESH network, corresponding point-to-point hardware circuit solution is 70Mbps (with a width of 10M).
In addition, the embodiment of the present invention propose frame structure can synchronous signal transmission, find signal and access signal so that should
Frame structure supports synchronous MESH network, and compared to the asynchronous WIFIMESH networks based on competition mechanism, its network delay is relatively
It is small.
The data frame that the embodiment of the present invention proposes, include the Transmission Time Interval of setting quantity, each Transmission Time Interval
Inside comprise at least 2 reference signal channels for being used to transmit pilot signal；Wherein, in the Transmission Time Interval of the setting quantity
The 1st Transmission Time Interval, in addition to control channel, master sync signal channel, auxiliary synchronous signals channel, broadcast channel, altogether
Enjoy channel and protection interval；Transmission Time Interval in addition to the 1st Transmission Time Interval, also include control letter respectively
Road, find signaling channel, shared channel and protection interval；2nd time slot of wherein last 1 Transmission Time Interval also includes setting
The access signaling channel of quantity.Data are transmitted using data frame format proposed by the present invention, in each Transmission Time Interval, extremely
Rare 2 channels can be used to pilot signal transmitted, and transmitted pilot signal is more, the position of pilot signal transmitted is more flexible,
Channel estimation value is obtained by pilot signal beneficial to communication node, improves network mobility.
Optionally, in another embodiment of the present invention, it is shown in Figure 1, the data frame it is last 1 transmission when
Between interval in reference signal channel occupancy described in last 1 Transmission Time Interval the 1st symbol and the 4th symbol in frequency
Rate resource；
The data frame, the reference signal channel of each Transmission Time Interval in addition to last 1 Transmission Time Interval,
The 1st, the 4th, the 8th of each Transmission Time Interval in addition to last 1 Transmission Time Interval and the are taken respectively
Frequency resource in 11 symbols.
Specifically, in embodiments of the present invention, further to the reference signal channel in each Transmission Time Interval of data frame
Position make limit explanation.In each Transmission Time Interval TTI of the data frame shown in Fig. 1, when being transmitted except last
Between be spaced outside TTI, TTi (i=0~n-2) includes two slot s lot respectively, and two time slots are used equally for transmission data；And count
According to last TTI of frame the 2nd time slot, as access signaling channel, therefore only remaining 1st time slot is used for data transfer.
In order to ensure that the node for receiving data obtains channel estimation value, the number that the embodiment of the present invention proposes by pilot signal
Multiple reference signal channels are set according to frame in each Transmission Time Interval, specifically, the 2 of each Transmission Time Interval TTI
In individual time slot, 2 reference signal channels are respectively set.As shown in fig. 1, in TTi (i=0~n-2), respectively each
Reference signal channel is set in the 1/4/8/11st symbol of Transmission Time Interval；And for last Transmission Time Interval
TTi (i=n-1), due to its 2nd time slot be arranged to access signaling channel, it is impossible to for transmitting data, therefore, only its 1st
Reference signal channel is set in the 1/4th symbol of time slot.
It should be noted that the embodiment of the present invention only be used for illustrate set in data frame TTI it is multiple
During reference signal channel, to the running time-frequency resource shared by each reference signal channel arrange the scheme of setting, also, apply
Scheme described in the embodiment of the present invention, good communication efficiency can be obtained in actual use.In actual application, root
Limited according to application scenarios and resources supplIes, can flexibly set the running time-frequency resource of each reference signal channel.For data frame transfer
On the premise of time interval sets multiple reference signal channels, the running time-frequency resource of multiple reference signal channels any one is set
Scheme is put, can be used in theory by the embodiment of the present invention, in protection domain of the embodiment of the present invention.
Optionally, in another embodiment of the present invention, the reference signal channel of the data frame is pectination with reference to letter
Number channel.
Specifically, shown in Figure 1, the embodiment of the present invention believes the reference signal in each Transmission Time Interval of data frame
Road is arranged to pectination distribution.Specifically, in the symbol where reference signal channel, when single antenna is sent, frequency domain is every 6
Resource unit, a pilot resources unit is set；When double antenna is sent, frequency domain sets a pilot tone every 3 resource units
Resource unit.
Optionally, in another embodiment of the present invention, the control channel in the 1st Transmission Time Interval
Take in the 1st symbol in the 1st Transmission Time Interval, the resource unit in addition to the reference signal channel；
The frequency resource in the 2nd symbol described in the master sync signal channel occupancy in the 1st Transmission Time Interval；
The frequency resource in the 3rd symbol described in the auxiliary synchronous signals channel occupancy in the 1st Transmission Time Interval；
The broadcast channel takes the frequency resource in the 6th symbol in the 1st Transmission Time Interval；
Protection interval in 1st Transmission Time Interval takes last 1 in the 1st Transmission Time Interval
Frequency resource in symbol；
Shared channel in 1st Transmission Time Interval takes the remaining symbol in the 1st Transmission Time Interval
Frequency resource in number；
The control channel in Transmission Time Interval in addition to the 1st Transmission Time Interval, take remove respectively
In 1st symbol of the Transmission Time Interval outside the 1st Transmission Time Interval in addition to the reference signal channel
Resource unit；
It is described to find that signaling channel takes the of Transmission Time Interval in addition to the 1st Transmission Time Interval respectively
Frequency resource in 2 symbols；
Protection interval in the Transmission Time Interval in addition to the 1st Transmission Time Interval, take remove respectively
Frequency resource in last 1 symbol of Transmission Time Interval outside 1st Transmission Time Interval；
Shared channel in the Transmission Time Interval in addition to the 1st Transmission Time Interval takes except institute respectively
State the frequency resource in the remaining symbol of the Transmission Time Interval outside the 1st Transmission Time Interval.
Specifically, in embodiments of the present invention, control channel, master sync signal channel to data frame, auxiliary synchronous signals
Channel, broadcast channel, protection interval, shared channel, find signaling channel shared by time-domain resource be defined.According to above-mentioned
Time-domain resource arrangement to each channel, each channel is in the time-domain resource shared by it, before proper communication function is not influenceed
Put, frequency domain resource can be taken with flexible arrangement.
Optionally, in another embodiment of the present invention, the control channel in the 1st Transmission Time Interval
Take in the 1st symbol in the 1st Transmission Time Interval, the resource unit in addition to the reference signal channel；
The money of centre 72 of the 2nd symbol described in the master sync signal channel occupancy in the 1st Transmission Time Interval
Source unit；
The money of centre 72 of the 3rd symbol described in the auxiliary synchronous signals channel occupancy in the 1st Transmission Time Interval
Source unit；
The broadcast channel takes the resource list of centre 180 of the 6th symbol in the 1st Transmission Time Interval
Member；
Protection interval in 1st Transmission Time Interval takes last 1 in the 1st Transmission Time Interval
All resource units of symbol；
Shared channel in 1st Transmission Time Interval takes the remaining symbol in the 1st Transmission Time Interval
All resource units in number；
The control channel in Transmission Time Interval in addition to the 1st Transmission Time Interval takes except institute respectively
State the money in addition to the reference signal channel in the 1st symbol of the Transmission Time Interval outside the 1st Transmission Time Interval
Source unit；
It is described to find that signaling channel takes the of Transmission Time Interval in addition to the 1st Transmission Time Interval respectively
The resource unit of centre 72 of 2 symbols；
Protection interval in the Transmission Time Interval in addition to the 1st Transmission Time Interval, take remove respectively
All resource units of last 1 symbol of Transmission Time Interval outside 1st Transmission Time Interval；
The shared channel of the Transmission Time Interval in addition to the 1st Transmission Time Interval takes except described respectively
All resource units in the remaining symbol of Transmission Time Interval outside 1st Transmission Time Interval.
Specifically, in the present embodiment, the running time-frequency resource of each channel of data frame is specifically set, to each channel
The running time-frequency resource of occupancy makes overall arrangements.Wherein, for control channel CCH, set it same with reference signal channel occupancy
Time-domain resource.In terms of frequency domain, when single antenna is sent, frequency domain sets a pilot resources unit conduct every 6 resource units
Reference signal channel, when double antenna is sent, frequency domain sets a pilot resources unit to be used as with reference to letter every 3 resource units
Number channel, remaining resource unit, i.e., as control channel CCH.
It should be noted that the embodiment of the present invention only illustrates the specific setting to each channel running time-frequency resource, it is not
Running time-frequency resource in the data frame that the considered critical embodiment of the present invention is proposed shared by each channel.In actual use, may be used
Based on each channel running time-frequency resource setting of the data frame proposed by the embodiment of the present invention, it is adjusted flexibly shared by each channel
Running time-frequency resource.
It is described applied to the communication node of broadband MESH network the embodiment of the invention discloses a kind of data transmission method for uplink
Communication node stores the format information for the data frame that any of the above-described embodiment proposes, and itself available data frame transfer time
Interval information；
Specifically, in embodiments of the present invention, the communication node in the MESH network of broadband stores any of the above-described embodiment and carried
The format information of the data frame gone out, specifically include running time-frequency resource information shared by each channel of data frame etc..It is further, since above-mentioned
The data frame that embodiment proposes includes the Transmission Time Interval of setting quantity, and each Transmission Time Interval is distributed on a communication
Node is used to send data, and therefore, the communication node needs in network stored between itself available data frame transfer time simultaneously
Every information, i.e., clear and definite which Transmission Time Interval that itself can take sends data.
Shown in Figure 2, the data transmission method for uplink that the present embodiment is proposed includes：
S201, itself the available data frame TTI information according to storage, determine itself available data frame
Transmission Time Interval；
Specifically, in the MESH network of broadband, the distribution to each Transmission Time Interval of data frame is performed by network system, and
Broadcasted by network host node, respectively after node receives broadcast, store itself available Transmission Time Interval information, and
According to distribution, Transmission Time Interval is taken in order.Therefore, when communication node needs to send data, it is necessary to pass through storage first
Itself available data frame TTI information, specifying itself can take which Transmission Time Interval sends data,
In order to avoid collided with other nodes.
It is understood that if broadband MESH network, which is arranged to each node, takes fixed Transmission Time Interval transmission number
According to then for a communication node, it is obtained and itself available data frame TTI information of storage is solid
Fixed constant, the shared Transmission Time Interval of communication is also changeless every time for it, and now, communication node is sending data
When, step S201 can be skipped, directly performs step S202.
S202, the format information according to the data frame, sent out in itself available data frame TTI
Send data message；Wherein, it is described to send data message in itself available data frame TTI, it is included in institute
State pilot signal transmitted in the reference signal channel of itself available data frame TTI.
Specifically, communication node is after it is determined that distribute to the Transmission Time Interval of itself, just in the Transmission Time Interval
Data are sent, corresponding data is sent in each channel of the Transmission Time Interval specially taken at itself.
It should be noted that communication node when sending data, simultaneously by reference to signaling channel pilot signal transmitted.
Also, in order to ensure that data receiver can accurately obtain channel estimation value by the data of reception, network mobility is improved,
Communication node is when sending data, the pilot signal transmitted in multiple reference signal channels as far as possible, specific pilot signal transmitted
Quantity, consult to determine by communicating pair.
The data transmission method for uplink that the embodiment of the present invention proposes, applied to the communication node of broadband MESH network, the communication section
Point stores the format information for the data frame that any of the above-described embodiment proposes, and itself available data frame TTI letter
Breath；This method includes：According to itself available data frame TTI information of storage, itself available data frame is determined
Transmission Time Interval；According to the format information of the data frame, sent out in itself available data frame TTI
Send data message；Wherein, it is described to send data message in itself available data frame TTI, it is included in institute
State pilot signal transmitted in the reference signal channel of itself available data frame TTI.In the above-mentioned technical solutions,
Communication node proposes it is that data frame format sends data according to above-described embodiment, and in a packet, multigroup pilot tone can be transmitted
Signal, improve network mobility.
Optionally, in another embodiment of the present invention, it is described itself to can use when the communication node is host node
Data frame TTI be the 1st Transmission Time Interval of data frame；
Wherein, the data message that sent in itself available data frame TTI also includes：
Broadcast singal is sent in the broadcast channel of itself available data frame TTI.
Specifically, the 1st Transmission Time Interval of the data frame that above-described embodiment proposes, because it includes synchronizing signal letter
Road, therefore the host node for being commonly assigned to broadband MESH network uses.That is, the host node in the MESH network of broadband takes
The 1st Transmission Time Interval of data frame.Host node can pass through the broadcast of shared Transmission Time Interval when sending data
Channel sends broadcast singal.Specifically, the information carried in broadcast singal is system set-up information, such as channel bearing frame number,
Whether network bandwidth, current network allow the information such as access.System set-up information is sent to net by host node by broadcast singal
All nodes of network.
Optionally, in another embodiment of the present invention, it is described between itself the available data frame transfer time
Every broadcast channel in send broadcast singal, including：
Transmission Time Interval scheduling letter is sent in the broadcast channel of itself available data frame TTI
Breath.
Specifically, for the data frame proposed in above-described embodiment, network system can further to data frame transfer when
Between interval carry out dynamically distributes, i.e., dynamically distribute Transmission Time Interval to communication node.Then, system is broadcasted by host node
Channel, distribution information is sent to each node of network, realizes the entirety control to network.
For example, with reference to described in Fig. 3, n TTI is included in 1 data frame, wherein preceding n1 TTI is static allocation TTI.Institute
Meaning static allocation TTI refers to network and has allocated the TTI in advance by which MESH nodes transmission.Static allocation TTI generally transmits dimension
Hold the necessary signaling message and network delay sensitive traffic of network.Static allocation TTI can ensure signaling message and network delay
The promptness of sensitive traffic transmission.Remaining TTI in data frame is dynamic dispatching TTI.Host node is slow according to being reported from node
State report is deposited, gives network node dynamic dispatching TTI resources.Dynamic dispatching TTI transmission is usually data streaming service.
, can be with flexible configuration n, n1, n2 value according to the different practical application scenes of broadband MESH network.Its configuration process
Process is matched similar to LTE TDD up-downgoings.Typical allocation scenarios are as shown in figure 4, in Fig. 4, different Configuration
The corresponding different communication scene configuration of value.
Based on above-mentioned setting, when network system needs to be scheduled configuration to data frame TTI, will dispatch
Information is sent to network host node, and network host node makes each node in network all obtain by the broadcast channel broadcasts schedule information
The schedule information is taken, Transmission Time Interval is taken according to the schedule information.
Based on above-mentioned processing, the frame structure that the embodiment of the present invention is applied is applied to a variety of application scenarios, such as
The business scenario relatively low for requiring network delay, or require that network receiving nodes are more and support the business of multiple data flow
Scene, need to only adjust the distribution of frame structure time interval can meet to require, the frame structure use range of application of the embodiment of the present invention
It is wider.
The embodiment of the invention discloses a kind of data sending device, applied to the communication node of broadband MESH network, referring to
Shown in Fig. 5, the device includes：
Data storage cell 501, the format information of the data frame for storing above-described embodiment proposition, and itself can use
Data frame TTI information；
Information confirmation unit 502, for itself the available data frame TTI information according to storage, it is determined that from
The available data frame TTI of body；
Data transmission unit 503, for the format information according to the data frame, passed in itself available data frame
Data message is sent in defeated time interval；Wherein, it is described to send number in itself available data frame TTI
It is believed that breath, is included in pilot signal transmitted in the reference signal channel of itself available data frame TTI.
Specifically, in the present embodiment unit specific works content, refer to corresponding to embodiment of the method content,
Here is omitted.
The data sending device that the embodiment of the present invention proposes, applied to broadband MESH network communication node, its data storage
Unit 501 stores the format information for the data frame that above-described embodiment proposes, and itself available data frame TTI
Information；When sending data, itself available data frame TTI first by information confirmation unit 502 according to storage
Information, determine itself available data frame TTI；Then data transmission unit 503 is according to the form of the data frame
Information, data message is sent in itself available data frame TTI；Wherein, it is described itself to can use described
Data frame TTI in send data message, be included in the ginseng of itself available data frame TTI
Examine pilot signal transmitted in signaling channel.Using above-mentioned technical proposal, communication node proposes it is data frame according to above-described embodiment
Form sends data, in a packet, multigroup pilot signal can be transmitted, improve network mobility.
Optionally, in another embodiment of the present invention, when described device is applied to the host node of broadband MESH network
When, itself available data frame TTI that data storage cell 501 stores is between the 1st transmission time of data frame
Every；
Wherein, when data transmission unit 503 sends data in itself available data frame TTI, also
It is specifically used for：
Broadcast singal is sent in the broadcast channel of itself available data frame TTI.
Specifically, in the present embodiment data transmission unit 503 specific works content, refer to corresponding embodiment of the method
Content, here is omitted.
Optionally, in another embodiment of the present invention, data transmission unit 503 is in itself available data frame
When broadcast singal is sent in the broadcast channel of Transmission Time Interval, it is specifically used for：
Transmission Time Interval scheduling letter is sent in the broadcast channel of itself available data frame TTI
Breath.
Specifically, in the present embodiment data transmission unit 503 specific works content, refer to corresponding embodiment of the method
Content, here is omitted.
The embodiment of the invention also discloses another data sending device, applied to the communication node of broadband MESH network,
Shown in Figure 6, the device includes：
Memory 601 and processor 602；
Wherein, memory 601 is connected with processor 602, for caused number in storage program and program operation process
According to；
Processor 602, for by the program in run memory 601, realizing following functions：
Store the format information for the data frame that above-described embodiment proposes, and itself available data frame TTI
Information；According to itself available data frame TTI information of storage, itself available data frame transfer time is determined
Interval；According to the format information of the data frame, data letter is sent in itself available data frame TTI
Breath；Wherein, it is described to send data message in itself available data frame TTI, be included in it is described itself can
Pilot signal transmitted in the reference signal channel of data frame TTI.
The data sending device that the embodiment of the present invention proposes, applied to the communication node of broadband MESH network, its processor
The format information for the data frame that 602 storage above-described embodiments propose, and itself available data frame TTI information；
When sending data, processor 602 according to itself available data frame TTI information of storage, determines itself first
Available data frame TTI；Then according to the format information of the data frame, in itself available data frame
Data message is sent in Transmission Time Interval；Wherein, it is described to be sent in itself available data frame TTI
Data message, it is included in pilot signal transmitted in the reference signal channel of itself available data frame TTI.
Using above-mentioned technical proposal, communication node proposes it is that data frame format sends data according to above-described embodiment, in a packet
In, multigroup pilot signal can be transmitted, improve network mobility.
Optionally, in another embodiment of the present invention, when described device is applied to the host node of broadband MESH network
When, itself available data frame TTI that processor 602 stores is the 1st Transmission Time Interval of data frame；
Wherein, it is also specific to use when processor 602 sends data in itself available data frame TTI
In：
Broadcast singal is sent in the broadcast channel of itself available data frame TTI.
Specifically, in the present embodiment processor 602 specific works content, refer to corresponding to embodiment of the method it is interior
Hold, here is omitted.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (13)
- A kind of 1. data frame, it is characterised in that including：The Transmission Time Interval of quantity is set, 2 ginsengs for being used to transmit pilot signal are comprised at least in each Transmission Time Interval Examine signaling channel；Wherein, the 1st Transmission Time Interval in the Transmission Time Interval of the setting quantity, in addition to control channel, master are together Walk signaling channel, auxiliary synchronous signals channel, broadcast channel, shared channel and protection interval；Each Transmission Time Interval in addition to the 1st Transmission Time Interval, also include control channel respectively, find signal Channel, shared channel and protection interval；2nd time slot of wherein last 1 Transmission Time Interval also includes access signaling channel.
- 2. data frame according to claim 1, it is characterised in that in last 1 Transmission Time Interval of the data frame Reference signal channel occupancy described in last 1 Transmission Time Interval the 1st symbol and the 4th symbol in frequency resource；The data frame, the reference signal channel of each Transmission Time Interval in addition to last 1 Transmission Time Interval, respectively Take the 1st, the 4th, the 8th and the 11st of each Transmission Time Interval in addition to last 1 Transmission Time Interval Frequency resource in symbol.
- 3. data frame according to claim 2, it is characterised in that the reference signal channel of the data frame refers to for pectination Signaling channel.
- 4. data frame according to claim 2, it is characterised in that the control in the 1st Transmission Time Interval In the 1st symbol described in channel occupancy in the 1st Transmission Time Interval, the resource list in addition to the reference signal channel Member；The frequency resource in the 2nd symbol described in the master sync signal channel occupancy in the 1st Transmission Time Interval；The frequency resource in the 3rd symbol described in the auxiliary synchronous signals channel occupancy in the 1st Transmission Time Interval；The broadcast channel takes the frequency resource in the 6th symbol in the 1st Transmission Time Interval；Protection interval in 1st Transmission Time Interval takes last 1 symbol in the 1st Transmission Time Interval Interior frequency resource；Shared channel in 1st Transmission Time Interval is taken in the remaining symbol in the 1st Transmission Time Interval Frequency resource；The control channel in Transmission Time Interval in addition to the 1st Transmission Time Interval, take respectively except described Resource in 1st symbol of the Transmission Time Interval outside the 1st Transmission Time Interval in addition to the reference signal channel Unit；It is described to find that signaling channel takes the 2nd of the Transmission Time Interval in addition to the 1st Transmission Time Interval respectively Frequency resource in symbol；Protection interval in the Transmission Time Interval in addition to the 1st Transmission Time Interval, take respectively except described Frequency resource in last 1 symbol of Transmission Time Interval outside 1st Transmission Time Interval；Shared channel in the Transmission Time Interval in addition to the 1st Transmission Time Interval takes except described respectively Frequency resource in the remaining symbol of Transmission Time Interval outside 1 Transmission Time Interval.
- 5. data frame according to claim 2, it is characterised in that the control in the 1st Transmission Time Interval In the 1st symbol described in channel occupancy in the 1st Transmission Time Interval, the resource list in addition to the reference signal channel Member；The resource list of centre 72 of the 2nd symbol described in the master sync signal channel occupancy in the 1st Transmission Time Interval Member；The resource list of centre 72 of the 3rd symbol described in the auxiliary synchronous signals channel occupancy in the 1st Transmission Time Interval Member；The broadcast channel takes the resource unit of centre 180 of the 6th symbol in the 1st Transmission Time Interval；Protection interval in 1st Transmission Time Interval takes last 1 symbol in the 1st Transmission Time Interval All resource units；Shared channel in 1st Transmission Time Interval is taken in the remaining symbol in the 1st Transmission Time Interval All resource units；The control channel in Transmission Time Interval in addition to the 1st Transmission Time Interval takes except described respectively Resource list in 1st symbol of the Transmission Time Interval outside 1 Transmission Time Interval in addition to the reference signal channel Member；It is described to find that signaling channel takes the 2nd of the Transmission Time Interval in addition to the 1st Transmission Time Interval respectively The resource unit of centre 72 of symbol；Protection interval in the Transmission Time Interval in addition to the 1st Transmission Time Interval, take respectively except described All resource units of last 1 symbol of Transmission Time Interval outside 1st Transmission Time Interval；The shared channel of the Transmission Time Interval in addition to the 1st Transmission Time Interval takes except the described 1st respectively All resource units in the remaining symbol of Transmission Time Interval outside individual Transmission Time Interval.
- 6. a kind of data transmission method for uplink, it is characterised in that applied to the communication node of broadband MESH network, the communication node is deposited The format information of the data frame as described in claim 1-4 any one is stored up, and between itself available data frame transfer time Every information；This method includes：According to itself available data frame TTI information of storage, determine between itself available data frame transfer time Every；According to the format information of the data frame, data letter is sent in itself available data frame TTI Breath；Wherein, it is described to send data message in itself available data frame TTI, be included in it is described itself can Pilot signal transmitted in the reference signal channel of data frame TTI.
- 7. according to the method for claim 6, it is characterised in that when the communication node is host node, it is described itself can Data frame TTI is the 1st Transmission Time Interval of data frame；Wherein, the data message that sent in itself available data frame TTI also includes：Broadcast singal is sent in the broadcast channel of itself available data frame TTI.
- 8. according to the method for claim 7, it is characterised in that described between itself the available data frame transfer time Every broadcast channel in send broadcast singal, including：Transmission Time Interval schedule information is sent in the broadcast channel of itself available data frame TTI.
- 9. a kind of data sending device, it is characterised in that applied to the communication node of broadband MESH network, the device includes：Data storage cell, for storing the format information of the data frame as described in claim 1-4 any one, and itself Available data frame TTI information；Information confirmation unit, for itself the available data frame TTI information according to storage, determine that itself is available Data frame TTI；Data transmission unit, for the format information according to the data frame, in itself the available data frame transfer time Data message is sent in interval；It is wherein, described to send data message in itself available data frame TTI, It is included in pilot signal transmitted in the reference signal channel of itself available data frame TTI.
- 10. device according to claim 9, it is characterised in that when described device is applied to the main section of broadband MESH network During point, itself available data frame TTI of the data storage cell storage is the 1st transmission time of data frame Interval；Wherein, when the data transmission unit sends data in itself available data frame TTI, also have Body is used for：Broadcast singal is sent in the broadcast channel of itself available data frame TTI.
- 11. device according to claim 10, it is characterised in that the data transmission unit is in itself available number During according to sending broadcast singal in the broadcast channel of frame Transmission Time Interval, it is specifically used for：Transmission Time Interval schedule information is sent in the broadcast channel of itself available data frame TTI.
- 12. a kind of data sending device, it is characterised in that applied to the communication node of broadband MESH network, the device includes：Memory and processor；Wherein, the memory is connected with the processor, for caused data in storage program and program operation process；The processor, for by running the program in the memory, realizing following functions：Store the format information of the data frame as described in claim 1-4 any one, and itself available data frame transfer Time interval information；According to itself available data frame TTI information of storage, itself available data frame is determined Transmission Time Interval；According to the format information of the data frame, sent out in itself available data frame TTI Send data message；Wherein, it is described to send data message in itself available data frame TTI, it is included in institute State pilot signal transmitted in the reference signal channel of itself available data frame TTI.
- 13. device according to claim 12, it is characterised in that when described device is applied to the main section of broadband MESH network During point, itself available data frame TTI of the processor storage is the 1st Transmission Time Interval of data frame；Wherein, when the processor sends data in itself available data frame TTI, also particularly useful for：Broadcast singal is sent in the broadcast channel of itself available data frame TTI.
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