CN104901785B - The node communication method and node device of network without center - Google Patents
The node communication method and node device of network without center Download PDFInfo
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- CN104901785B CN104901785B CN201410076998.3A CN201410076998A CN104901785B CN 104901785 B CN104901785 B CN 104901785B CN 201410076998 A CN201410076998 A CN 201410076998A CN 104901785 B CN104901785 B CN 104901785B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Abstract
The present invention proposes a kind of node communication method of network without center, comprising: the radio frames that inter-node communication uses are made of control domain, data field and feedback field；Node sends and receives wireless control communications in the control domain, and the wireless control communications include frame structure configuration information, and the frame structure configuration information is used to indicate spatial structure or frequency-domain structure of the radio frames or both combination；Node sends and receives data in the data field；Node sends and receivees feedback information in the feedback field, and the feedback information is constructed according to the state for receiving data in data field by node, combined comprising retransmission feedback instruction or channel quality indicator or both.Using method provided by the invention, can on the basis of saving radio resource high raising retransmission efficiency, can reduce and adjacent node is interfered with improve data transfer reliability.
Description
Technical field
The present invention relates to mobile communication field more particularly to the node communication methods and node device of network without center.
Background technique
At present in mobile communication field, network without center (also known as self-organizing network) application is more and more extensive, wherein comparing
Mature network without center technology is using the Mesh technology based on IEEE802.16 as representative, and Mesh mode Physical Frame Structure is as schemed
Shown in 1.Each frame includes control subframe and data burst.It controls subframe and occupies scheduled OFDM symbol in the front end of every frame,
It is interior to be divided into several time slots.Remaining symbol is the symbol of data burst.It is fixed using QPSK modulation and 1/2 yard to control subframe
The RS-CC of rate is encoded.Customized modulation coding scheme can be used in data burst, but each Mesh frame is not supported to be changed.
Inventor has found during realizing the prior art using the Mesh technology based on IEEE802.16 as the existing of representative
Technology, the prior art has at least the following problems:
In network without center node, because there is no central nodes to coordinate, when node need to transmit data, sending node and connect
The resource (bandwidth of transmission and lasting duration etc.) for needing the mode through consultation or competed to obtain transmission data between node is received,
And it is limited to radio frames frame structure, sending node can not obtain receiving node and receive in physical layer data in data transmission procedure
State carries out HARQ re-transmission, can only retransmit (such as the ARQ of MAC PDU is retransmitted) by ARQ more than physical layer to guarantee data
Reception accuracy, and if desired retransmitted by ARQ more than physical layer, receiving node also needed the side such as to compete or coordinate
Formula obtains resource to carry out the transmission of feedback information.There is likely to be acquisition resource failures can not send feedback information therebetween, obtains
Take resource time is longer received feedback information is caused to fail, therefore re-transmission is inefficient, and the radio resource benefit of network
It is lower with rate.
Moreover, sending node can not obtain the channel-quality feedback of receiving node, cannot change with wireless chaining status
It adjusts modulation coding scheme and sends power, under severe channel circumstance, preset fixed modulation coding mode can not expire
Sufficient communication requirement.And be usually to maintain preset fixed modulation coding mode, sending node needs full power to emit, it may appear that sets
Standby power consumption is larger or interferes adjacent node larger problem.
Summary of the invention
To solve the above problems, the present invention proposes a kind of node communication method of network without center, comprising:
The radio frames that inter-node communication uses are made of control domain, data field and feedback field；
Node sends and receives wireless control communications in the control domain, and the wireless control communications are configured comprising frame structure
Information, the frame structure configuration information are used to indicate spatial structure or frequency-domain structure of the radio frames or both combination；
Node sends and receives data in the data field；
Node sends and receivees feedback information in the feedback field, and the feedback information is by node according to receiving in data field
The state of data constructs, and combines comprising retransmission feedback instruction or channel quality indicator or both.
Further, the control domain is divided into several sub-bands on frequency domain, is divided into several controls in the time domain
Time slot processed, a sub-band and a control time slot constitute a control resource block.
Further, several described control resource blocks constitute a transmission opportunity, packet in each transmission opportunity
The logical number of the control resource block contained is identical as the number of transmission opportunity, in each sub-band, the control domain
The logical number for the control resource block for being included in time domain length is different, in each control time slot, the control
The logical number for the control resource block for being included in the frequency domain length in domain is different；Node is sent in the transmission opportunity
Wireless control communications.
Further, each control resource block absolute coding that each transmission opportunity includes, node is in each transmission
The same section or different piece of wireless control communications are transmitted on each control resource block of chance.
Preferably, the logical number of the control resource block and the mapping relations of physics number are identical in each radio frames
Or it is different.
It preferably, also include node control domain in the data field, node sends and receives chain in the node control domain
Road controls information, and the link control message includes at least the modulation coding information of data field.
Preferably, the control domain is made of several control resource blocks, and the control resource block occupies one in the time domain
A control time slot occupies a sub-band on frequency domain, and the control time slot is by AGC/ synchronous head 1, data field 1 and protection
Interval 1 composition, node the AGC/ synchronous head 1 carry out it is described control time slot reception gain adjustment with it is synchronous, node is in institute
It states data field 1 and sends and receives the wireless control communications；The data field is made of several data slots, when the data
Gap is made of AGC/ synchronous head 2, control zone 1, data field 2 and protection interval 2, and node carries out described in the AGC/ synchronous head 2
Data slot reception gain adjustment with it is synchronous, node sends and receives the link control message in the control zone 1, save
Point sends and receives data in the data field 2；The feedback field is made of several feedback slots, the feedback slot by
AGC/ synchronous head 3, control zone 2 and protection interval 3 form, and node carries out the feedback slot in the AGC/ synchronous head 3
Reception gain adjustment with it is synchronous, node sends and receives feedback information in the control zone 2, and the feedback information is anti-according to place
Transmit the reception state construction of data in the data field 2 for presenting the corresponding data slot of time slot.
Preferably, it is adopted when node sends and receives in the data field 1, control zone 1, control zone 2 or any combination thereof
With fixed modulation coding scheme.
Preferably, the modulation coding scheme that node is used when the data field 2 sends or receives is in each data slot
It is inside different, node includes in the link control message that the control zone 1 is sent in each data slot should
The modulation coding scheme instruction and corresponding decoded block information that the data field 2 of the data slot uses.
Preferably, the link control message packet that node is sent in each data slot in the control zone 1
It is contained in the sub-band number that the data field 2 actually occupies in the data slot.
Preferably, if node includes in the received feedback information in the control zone of i-th of feedback slot of n-th of radio frames 2
The data field 2 of i-th of data slot transmits the retransmission feedback instruction of data, then the radio frames of node at (n+1)th or later
The data that the data field 2 of i-th of data slot is sent indicate to generate according to the retransmission feedback.
Preferably, if node includes in the received feedback information in the control zone of i-th of feedback slot of n-th of radio frames 2
The channel quality indicator of i-th of data slot, the then number of i-th of data slot of the radio frames of node at (n+1)th or later
According to area 2 using the modulation coding scheme chosen according to the channel quality indicator, sent in the control zone of i-th of data slot 1
Link control message include place data slot data field 2 use modulation coding scheme instruction and corresponding encoding block letter
Breath.
Based on identical design, the present invention also proposes a kind of node device for realizing the above method, including control unit, hair
Send unit, receiving unit and feedback unit:
The receiving unit, for receiving wireless control communications in control domain and/or receiving feedback information simultaneously in feedback field
It is sent to described control unit, be also used to receive data in data field and carries out respective handling；
Described control unit, for constructing the wireless control communications in control domain transmission and being sent to the transmission unit,
It is also used to control the node device according to the received wireless control communications of the receiving unit and/or feedback information；
The feedback unit constructs feedback message simultaneously for the data receiving state according to the receiving unit in data field
It is sent to the transmission unit；
The transmission unit, for receiving the wireless control communications of described control unit construction and being sent in control domain, also
For sending data in data field, being also used to receive the feedback message of the feedback unit construction and being sent in feedback field.
Further, the receiving unit is also used to the node control domain receiving node link control message in data field
And it is sent to described control unit；Described control unit is also used to construct the section in the transmission of the node control domain of the data field
Point link control message is simultaneously sent to the transmission unit, is also used to according to the received node link control letter of the receiving unit
Breath controls node；The transmission unit is also used to receive the node link control information of described control unit construction simultaneously
It is sent in the node control domain of data field.
Using the node communication method of network without center provided by the invention, node carries out data transmission in acquisition resource
Afterwards, receiving node no longer needs to the resource that feedback information is sent by competing or negotiating acquisition, and in each radio frames
It can be sent to sending node according to the current state construction feedback information for receiving data, sending node can connect according in feedback field
The feedback information of receipts carries out data re-transmission, pole on the basis of saving radio resource in data field immediately in radio frames later
Height improves retransmission efficiency, also, sending node can also adjust the modulation coding scheme in data field according to feedback information, with suitable
Variations improve data transfer reliability is answered, the corresponding power that adjusts can avoid lower power consumption to adjacent node interference.
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 apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is wireless frame structure schematic diagram used by the prior art；
Fig. 2 is the wireless frame structure schematic diagram one that the embodiment of the present invention one provides；
Fig. 3 is the wireless frame structure schematic diagram two that the embodiment of the present invention one provides；
Fig. 4 is wireless frame structure schematic diagram one provided by Embodiment 2 of the present invention；
Fig. 5 is wireless frame structure schematic diagram two provided by Embodiment 2 of the present invention；
Fig. 6 is wireless frame structure schematic diagram three provided by Embodiment 2 of the present invention；
Fig. 7 is wireless frame structure schematic diagram four provided by Embodiment 2 of the present invention；
Fig. 8 provides control resource block physics number and logical number mapping relations schematic diagram one for the embodiment of the present invention；
Fig. 9 provides control resource block physics number and logical number mapping relations schematic diagram two for the embodiment of the present invention；
Figure 10 is node device schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments；It should be noted that in the absence of conflict, in the application
Embodiment and embodiment in feature can be combined with each other.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Embodiment one
The present embodiment provides the node communication method of network without center in one, which is mainly used for network without center
In node between carry out wireless control communications (information include at least frame structure control information and is used for the time domain knots of radio frames
Structure and frequency-domain structure) send and receive, the sending and receiving of data, feedback information send and receive.Node communication uses
Wireless frame structure it is as shown in Figure 2 or Figure 3.
The step of communication means between node are as follows:
101, node sends wireless control communications in the control domain of each radio frames, or receives the nothing of other nodes transmission
Line traffic control information.
If control domain does not segment (as shown in Figure 2) further in frequency domain or time domain in 101-1, radio frames, node is being controlled
The wireless control communications that domain processed is sent, may include frequency-domain structure instruction (such as frequency domain length of radio frames) to radio frames,
Spatial structure indicates (control domain time domain length, data field time domain length, feedback field time domain length, entire radio frames time domain length
Deng)；
If domain processed is divided into several sub-bands on frequency domain in 101-2, radio frames, it is divided into several controls in the time domain
Time slot processed, a sub-band and the control constitute a control resource block, i.e. control domain controls resource block by several
It constitutes (as shown in Figure 3).And such division can also be used in data field, feedback field.The wireless control that node is sent in control domain
Information, may include that (such as the frequency domain length of radio frames, the frequency domain of each sub-band are long to the instruction of the frequency-domain structures of radio frames
Degree), spatial structure indicate (control domain time domain length, data field time domain length, feedback field time domain length, entire radio frames time domain
Length, control time slot time domain length etc.)；
And sending node is to control resource block absolute coding each in control domain, if can in a control resource block or
A group for dry control resource block closes hair wireless control communications, control resource block logical number can it is identical as physics number or
It is different.
Wireless control communications can also be sent in the transmission opportunity of several control resource block compositions.One transmission opportunity
Interior each control resource block is independently to be encoded.The logic for the control resource block for wherein including in each transmission opportunity
Number is identical as the number of transmission opportunity, and in each sub-band, the control for being included in the time domain length of control domain is provided
The logical number of source block is different, and includes described in each control time slot, in the frequency domain length of the control domain
The logical number of control resource block is different.It can be realized using following algorithm: when control domain is divided into L in the time domain
Gap is divided into M sub-band in frequency domain, and N number of control resource block constitutes a transmission opportunity, and wherein L and M is not less than 1
Even number, N is the even number no more than L, and M is not more than L/N.(it is similar, if when control domain is divided into M control in the time domain
Gap, L sub-band are also suitable this algorithm, also, for the control domain that odd number resource block is constituted, can discard several controls
Resource block is to guarantee to meet the pre- of control number of resources N that this algorithm subbands number M, control timeslot number L, transmission opportunity include
If relationship, to be applicable in this algorithm), the transmission opportunity number of control domain is 1~M*L/N, then on M*L/N control resource block
Mapping mode are as follows:
It is 1~ML/N by the logical number for the control resource block for being 1~ML/N is numbered for first group of M sub-band；It is right
In the 2nd group of M frequency domain sub-band thereafter, if wherein the number of a certain sub-band is k, (k=M+1 ... NM), then physics is numbered
Logical number for the resource block of (k-1) L+1~kL is { (k-M-1) L+ (k-M+1)~(k-M) L, (k-M-1) L+1~(k-M-
1)L+(k-M)}.The identical N number of control resource block of logical number constitutes a transmission opportunity.
With M=6, L=8, L=2 citing, such as Fig. 8 is then divided into 6 sub-bands, 8 controls in the control domain in a radio frames
Time slot processed includes altogether 48 control resource blocks, forms a transmission opportunity by 2 control resource blocks.Then transmission opportunity number is 1
~24, two resource blocks for including in each transmission opportunity, the logical number of each resource block and the number of transmission opportunity are identical.
The control resource block for being 1~24 for physics number, logical number are that physics number is identical, are 25~48 for physics number
Physical Resource Block, logical number can be by the corresponding logical number of control resource block of physics number 1~24 by with worthwhile
Method obtains.As shown in Figure 8.Therefore time slot is controlled at each, the control resource block logic number in 6 sub-bands is different
, in each sub-band, the control resource block logic number in 8 control time slots is different.Logical number identical 2
A control resource block constitutes a transmission opportunity.Each transmission opportunity only can be in a sub-band or in a control time slot
There is a control resource block.
Also, the logical number for the control resource block for being included in control domain and the mapping relations of physics number, each
It can be identical in the radio frames, be also possible to different.It can be based on precedent, in the control domain of each radio frames, institute
The mapping relations of logical number and the physics number for the control resource block for including can be using as shown in figure 8, can also be every
A radio frames obtain different mapping relations, such as the 1st frame as shown in figure 8, the 2nd frame such as Fig. 9 using circular shifting on time domain axis
It is shown, and so on.It can also be realized by mature hop algorithm.When interfering if it exists in this way, pass through logical relation
Jump carries out interference avoidance.
Also, sending node is when control domain is sent, and in each transmission opportunity, sends out different on each control resource block
Wireless control message, or the different piece of a wireless control message can also send out a wireless controlled in each control resource block
Message processed thinks same section, if each control resource block sends out the same section of a wireless control message, in this way due to each
The fast absolute coding of resource is controlled, if some control resource block is disturbed, remaining control resource block can also be demodulated correctly, by superfluous
Remaining send promotes the success rate that message is sent.
If node receives wireless control communications, the wireless frame structure being based on need to be sent with sending node and be consistent, and
And wireless control communications based on the received, node equipment of itself is controlled.
102, node sends data in the data field of each radio frames, or receives data.
Wherein, the structure of data field can be as shown in Figure 2 or Figure 3, can also be with the time-frequency of the control domain shown in 101-2
Structure is similar.Node can also be according to the feedback information received in step 103 in feedback field, in the data field of radio frames later
Corresponding data are sent, such as feedback data loss or mistake, then the data of loss or mistake are retransmitted.
Step 103, node send feedback information, or receive feedback information in the feedback field of each radio frames.
Wherein, the structure of feedback field can be as shown in Figure 2 or Figure 3, can also be with the video of the control domain shown in 101-2
Structure is similar.
Node constructs feedback information according to the state that data field receives data, wherein may include to loss or decoding error
The data retransmission feedback of data packet, to receive data channel quality indicator (such as signal-to-noise ratio, the bit error rate), require sending node
Adjust the power adjustment instruction etc. of power.
Based on same design, the present embodiment also provides a kind of node device, as shown in Figure 10, including control unit, hair
Send unit, receiving unit and feedback unit:
The receiving unit, for receiving wireless control communications in control domain and/or receiving feedback information simultaneously in feedback field
It is sent to described control unit, be also used to receive data in data field and carries out respective handling；
Described control unit, for constructing the wireless control communications in control domain transmission and being sent to the transmission unit,
It is also used to control the node device according to the received wireless control communications of the receiving unit and/or feedback information；
The feedback unit constructs feedback message simultaneously for the data receiving state according to the receiving unit in data field
It is sent to the transmission unit；
The transmission unit, for receiving the wireless control communications of described control unit construction and being sent in control domain, also
For sending data in data field, being also used to receive the feedback message of the feedback unit construction and being sent in feedback field.
Embodiment two
Embodiment two and the difference of embodiment one are that node communication method provided in embodiment two, node is adopted
Wireless frame structure also includes node control domain in the data field in radio frames as shown in Fig. 4 or Fig. 5 or Fig. 6 or Fig. 7.
The step of communication means between node are as follows:
201, node sends wireless control communications in the control domain of each radio frames, or receives the nothing of other nodes transmission
Line traffic control information.
If control domain does not segment (as shown in Figure 3) further in frequency domain or time domain in 201-1, radio frames, node is being controlled
The wireless control communications that domain processed is sent, may include frequency-domain structure instruction (such as frequency domain length of radio frames) to radio frames,
Spatial structure instruction (time domain length in the node control domain that control domain time domain length, data field time domain length, data field include,
Feedback field time domain length, entire radio frames time domain length etc.)；
If control domain is not divided in frequency domain in 201-2, radio frames, it is only divided into several control time slots in the time domain
(as shown in Figure 5), and this division mode is all used in data field, feedback field, i.e. data field is divided into several data slots,
It is divided into several feedback slots in feedback field, also, controls time slot by AGC/ synchronous head 1, data field 1 and 1 group of protection interval
At data slot is made of AGC/ synchronous head 2, control zone 1, data field 2 and protection interval 2, and feedback slot is by AGC/ synchronous head
3, control zone 2 and protection interval 3 form.
The then wireless control communications that node is sent in the data field 1 of control time slot, may include the frequency domain knot to radio frames
Structure indicates that (control domain includes number comprising control number of time slot, data field for (such as frequency domain length of radio frames), spatial structure instruction
Data slot number that data slot number that the node control domain that includes according to number of time slot, data field occupies, feedback field include,
Entire radio frames time domain length, control time slot respectively form partial time slot length, data slot and respectively form partial time slot length, control
Time slot respectively forms partial time slot length etc.)；
If control domain is divided into several sub-bands on frequency domain in 201-3, radio frames, it is divided into several in the time domain
Time slot is controlled, a sub-band and the control constitute a control resource block, i.e. control domain controls resource by several
Block constitutes (as shown in Figure 4).And such division can also be used in data field, feedback field.Node is believed in the wireless control of control domain
Breath, may include to the frequency-domain structures of radio frames instruction (such as frequency domain length, frequency domain length of each sub-band of radio frames),
Spatial structure instruction (time domain length in the node control domain that control domain time domain length, data field time domain length, data field include,
Feedback field time domain length, entire radio frames time domain length, control time slot time domain length etc.)；
Also, the mapping relations of the logical number of control resource block and physics number in control domain, control resource block construction
The mode of transmission opportunity is identical as described in 101-2 in embodiment one.
201-4, on the basis of 201-3, further, the data field of radio frames is divided into several data slots, instead
Feedback domain is divided into several feedback slots, wherein the structure of control time slot, data slot, feedback slot is the same as described in 201-2
Similar, wireless frame structure is as shown in Figure 7.
The then wireless control communications that node is sent in the data field 1 of control time slot, may include the frequency domain knot to radio frames
Structure indicates that (control domain includes control timeslot number for (such as frequency domain length, sub-band frequency domain length of radio frames), spatial structure instruction
Mesh, data field data slot number, feedback field comprising the node control domain occupancy that data slot number, data field include include
Data slot number, entire radio frames time domain length, control time slot respectively form each composition portion of partial time slot length, data slot
Time-division slot length, control time slot respectively form partial time slot length etc.)；
202, node sends data in the data field of each radio frames, or receives data.
202-1, based on wireless frame structure described in 201-1 (such as Fig. 4), node can according in step 203-1 anti-
The feedback information that feedback domain receives is sent corresponding if feedback information is indicated comprising retransmission feedback in the data field of radio frames later
Data, as feedback data lose or mistake, then to lose or mistake data retransmit.Node of the node in data field
Control domain can be included at least with the link control message of sending node and be sent modulating-coding used by data in data field
Information, such as modulation system instruction, coding mode instruction, coded block size etc..So in each radio frames, node all may be used
To send data using different modulation coding schemes, used modulation coding scheme can be according to anti-in step 203-1
Feedback the received feedback information in domain chosen, if such as include in current feedback information channel quality indicator instruction receive noise
Than being unsatisfactory for demodulation signal-noise ratio threshold, sending node can choose the modulation system of more low order or will compile in radio frames later
The code rate of code mode reduces.
202-2, based on wireless frame structure described in 201-2 (as shown in Figure 6), if node in 203-2 step, n-th
The control zone 2 of i-th of feedback slot of a radio frames, received feedback information include that the data field 2 of i-th of data slot is transmitted
The retransmission feedbacks of data indicates, then the radio frames of node at (n+1)th or later, in the number of i-th of data slot
It according to the data that area 2 is sent, indicates to generate according to the retransmission feedback, such as retransmit the instruction in retransmission feedback instruction to need to retransmit
Data packet etc.；If also, node, in 203-2 step, the control zone 2 of n-th of radio frames, i-th of feedback slot is received
The feedback information, the channel quality indicator (such as signal-to-noise ratio, the bit error rate) comprising i-th of data slot, then node exists
(n+1)th or the radio frames later, the data field 2 of i-th of data slot is using according to the channel quality
Selecting index modulation coding scheme (if such as instruction received signal to noise ratio be unsatisfactory for demodulation threshold, reduce code rate or be reduced to
Low-order-modulated mode etc.), it include place number in the link control message that the control zone 1 of i-th of data slot is sent
It is indicated according to the modulation coding scheme that the data field 2 of time slot uses, corresponding decoded block information.
202-3, based on wireless frame structure described in 201-3 (such as Fig. 5), it is similar with 202-1 step.
202-4, based on wireless frame structure described in 201-4 (such as Fig. 7), it is similar with 202-2 step.
Step 203, node send feedback information, or receive feedback information in the feedback field of each radio frames.
203-1, it is based on being received with wireless frame structure described in 201-1 (such as Fig. 4), the feedback information of node according to data field
The state of data constructs, and may include to the data retransmission feedback of the data of loss or decoding error, to the channel matter for receiving data
Figureofmerit (such as signal-to-noise ratio, the bit error rate), the power adjustment instruction for requiring sending node adjustment power etc..
203-2, based on wireless frame structure described in 201-2 (such as Fig. 6), if node is i-th of feedback slot control zone 2
The feedback information of transmission is constructed in the state that the data field of i-th of data slot 2 receives data according to current radio frames, can be wrapped
Containing to lose or decoding error data data retransmission feedback, to receive data channel quality indicator (such as signal-to-noise ratio, error code
Rate etc.), require sending node adjustment power power adjustment instruction etc..
203-3, based on wireless frame structure described in 201-3 (such as Fig. 5), it is similar with 203-1 step.
203-4, it is based on and wireless frame structure described in 201-4 (such as Fig. 7), similar with 203-1 step
Based on same design, the present embodiment also provides a kind of node device, such as Figure 10, including transmission unit, reception list
Member, control unit, feedback unit.It is with the node device difference provided in embodiment one:
The receiving unit is also used to the node control domain receiving node link control message in data field and is sent to institute
State control unit；
Described control unit is also used to construct the node link control information in the transmission of the node control domain of the data field
And it is sent to the transmission unit, it is also used to control node according to the received node link control information of the receiving unit
System；
The transmission unit is also used to receive the node link control information of described control unit construction and in data field
Node control domain is sent.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of node communication method of network without center characterized by comprising
The radio frames that inter-node communication uses are made of control domain, data field and feedback field；
Node sends and receives wireless control communications in the control domain, and the wireless control communications include that frame structure matches confidence
Breath, the frame structure configuration information are used to indicate spatial structure or frequency-domain structure of the radio frames or both combination；
Node sends and receives data in the data field, includes also node control domain in the data field, node is in the section
Point control domain sends and receives link control message, and the link control message includes at least the modulation coding information of data field；
Node sends and receivees feedback information in the feedback field, and the feedback information is by node according to receiving data in data field
State construction, combined comprising retransmission feedback instruction or channel quality indicator or both；
The control domain is made of several control resource blocks, and the control resource block occupies a control time slot in the time domain,
A sub-band is occupied on frequency domain, the control time slot is made of AGC/ synchronous head 1, data field 1 and protection interval 1, node
The AGC/ synchronous head 1 carry out it is described control time slot reception gain adjustment with it is synchronous, node the data field 1 send with
Receive the wireless control communications；
The data field is made of several data slots, and the data slot is by AGC/ synchronous head 2, control zone 1, data field 2
Formed with protection interval 2, node carried out in the AGC/ synchronous head 2 the reception gain adjustment of the data slot with it is synchronous,
Node sends and receives the link control message in the control zone 1, and node sends and receives data in the data field 2；
The feedback field is made of several feedback slots, and the feedback slot is by AGC/ synchronous head 3, between control zone 2 and protection
Every 3 compositions, node carried out in the AGC/ synchronous head 3 the reception gain adjustment of the feedback slot with it is synchronous, node is in institute
It states control zone 2 and sends and receives feedback information, the feedback information is according to the data of the corresponding data slot of place feedback slot
Transmit the reception state construction of data in area 2；
If node is when the received feedback information in the control zone of i-th of feedback slot of n-th of radio frames 2 includes i-th of data
The retransmission feedback instruction of data is transmitted in the data field 2 of gap, then when i-th of data of the radio frames of node at (n+1)th or later
The data that the data field 2 of gap is sent indicate to generate according to the retransmission feedback.
2. node communication method according to claim 1, it is characterised in that: the control domain is divided into several on frequency domain
A sub-band, is divided into several control time slots in the time domain, and a sub-band and a control time slot constitute one
A control resource block.
3. node communication method according to claim 2, it is characterised in that:
Several described control resource blocks constitute a transmission opportunity, the control resource block for including in each transmission opportunity
Logical number is identical as the number of transmission opportunity, in each sub-band, is included in the time domain length of the control domain
The logical number of control resource block be different, in each control time slot, institute in the frequency domain length of the control domain
The logical number for the control resource block for including is different；
Node sends wireless control communications in the transmission opportunity.
4. node communication method according to claim 3, which is characterized in that each control that each transmission opportunity includes
Resource block absolute coding, node transmit the identical portions of wireless control communications on each control resource block of each transmission opportunity
Point or different piece.
5. node communication method according to claim 2, which is characterized in that the logical number and object of the control resource block
The mapping relations of reason number are identical or different in each radio frames.
6. node communication method according to claim 1, which is characterized in that node is in the data field 1, control zone 1, control
Using fixed modulation coding scheme when being sent and received in area 2 processed or any combination thereof.
7. node communication method according to claim 1, it is characterised in that:
The modulation coding scheme that node is used when the data field 2 sends or receives is different in each data slot,
Node includes the data slot in the link control message that the control zone 1 is sent in each data slot
The data field 2 use modulation coding scheme instruction and corresponding decoded block information.
8. node communication method according to claim 1, which is characterized in that node is in the control zone 1 each described
The link control message sent in data slot includes the son frequency that the data field 2 actually occupies in the data slot
Band number.
9. node communication method according to claim 1, which is characterized in that if node is anti-at i-th of n-th of radio frames
The received feedback information in control zone 2 for presenting time slot includes the channel quality indicator of i-th of data slot, then node is at (n+1)th
Or the data field 2 of i-th of data slot of radio frames later is using the modulating-coding chosen according to the channel quality indicator
Mode is used in the data field 2 that the link control message that the control zone of i-th of data slot 1 is sent includes place data slot
Modulation coding scheme instruction and corresponding decoded block information.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107205262B (en) * | 2016-03-18 | 2020-05-26 | 大唐移动通信设备有限公司 | Data transmission method and device based on wireless self-organizing network |
| CN107733589B (en) * | 2017-09-29 | 2021-03-02 | 上海金卓科技有限公司 | Method, device, equipment and storage medium for realizing automatic retransmission request of ad hoc network |
| CN110225551B (en) * | 2019-06-24 | 2021-09-24 | 成都中科微信息技术研究院有限公司 | Terminal and system for RB (radio bearer) level retransmission |
| CN110289939B (en) * | 2019-06-24 | 2021-09-28 | 成都中科微信息技术研究院有限公司 | Base station and system for RB (radio bearer) level retransmission |
| CN110225552B (en) * | 2019-06-24 | 2021-09-24 | 成都中科微信息技术研究院有限公司 | RB (radio bearer) level retransmission method and system |
| WO2021007740A1 (en) * | 2019-07-15 | 2021-01-21 | 海能达通信股份有限公司 | Method and device for implementing harq mechanism in wireless mesh network |
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