CN106470097A - In a kind of MANET, right of speech seizes the method that collision avoids - Google Patents
In a kind of MANET, right of speech seizes the method that collision avoids Download PDFInfo
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- CN106470097A CN106470097A CN201510511861.0A CN201510511861A CN106470097A CN 106470097 A CN106470097 A CN 106470097A CN 201510511861 A CN201510511861 A CN 201510511861A CN 106470097 A CN106470097 A CN 106470097A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000001960 triggered effect Effects 0.000 claims description 9
- 230000009191 jumping Effects 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 230000000977 initiatory effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 206010011878 Deafness Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0042—Arrangements for allocating sub-channels of the transmission path intra-user or intra-terminal allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
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Abstract
The present invention proposes right of speech in a kind of MANET and seizes the method that collision avoids, including：Right of speech preempting resources pond is divided into some mutually orthogonal running time-frequency resources；In seizing with a right of speech, each terminal takies described mutually orthogonal running time-frequency resource transmission right of speech and seizes message.Terminal if the right of speech not receiving high priority terminal seizes message, then carries out secondary right of speech and seizes after the right of speech time of seizing terminates, and described secondary right of speech is seized and accessed when being jumped using frequency hopping.
Description
Technical field
The present invention relates to wireless self-networking field, in more particularly, to a kind of MANET, right of speech seizes what collision avoided
Method.
Background technology
Self-organizing network synchronization right of speech method for pre-emptively common at present, main flow includes right of speech promoter and sends
Right of speech seizes message, and other terminals receive right of speech and seize message and forward；If right of speech promoter is when one section
The interior right of speech not receiving other higher priority terminals initiations seizes message, then right of speech is seized successfully；Otherwise,
Right of speech seizes failure.This right of speech is seized in flow process, non-cooperating diversity pass-through mode, it will cause broadcast storm,
Especially when having multiple terminals to initiate right of speech simultaneously and seize；Therefore how can adopt collaboration diversity forwarding side
Formula, but when having multiple terminals to initiate right of speech simultaneously and seize, " the ear that collaboration diversity pass-through mode brings
Deaf problem " and " near-far interference " will can not ensure that the right of speech that multiple right of speech promoters can receive other side robs
Account for message, and then make multiple right of speech promoters initiate group service simultaneously, group service collides.
Content of the invention
For the problems referred to above, the present invention proposes right of speech in a kind of MANET and seizes the method that collision avoids, including：
Right of speech preempting resources pond is divided into some mutually orthogonal running time-frequency resources；In seizing with a right of speech, respectively
Terminal takies described mutually orthogonal running time-frequency resource transmission right of speech and seizes message.
Further, also include：Described terminal after the right of speech time of seizing terminates, if not receiving height
The right of speech of priority endpoint seizes message, then carry out secondary right of speech and seize, and described secondary right of speech is seized using jump
Access during chatter.
Further, the described secondary running time-frequency resource seized is as follows with the time-frequency resource allocating satisfaction once seized
Condition：
In time domain：Take in a right of speech is seized identical time slot each terminal seize in secondary right of speech in take
Mutually different time slot；
On frequency domain：The different frequency domain position that same terminal takies in right of speech is seized twice.
Further, the running time-frequency resource that same terminal takies in right of speech is seized twice is completely orthogonal.
Further, described right of speech seizes the synchronous access of support and/or asynchronous access.
Further, described synchronous access also includes：Each right of speech seizes source terminal in right of speech preempting resources pond
1 jump time-domain position sends right of speech and seizes message, respectively receives described right of speech and seizes the terminal of message in jumping figure+1
Time-domain position forwarded.
Further, also include：If described right of speech seize source terminal receive priority be higher than this terminal other
Right of speech seizes message, then forward other rights of speech described to seize message.
Further, described asynchronous access includes：
When described right of speech is seized the triggered time and is in right of speech preempting resources pond, described right of speech seizes source terminal
Send the position described right of speech of transmission in nearest right of speech message and seize message；
When described right of speech is seized the triggered time and is in outside right of speech preempting resources pond, described right of speech seizes source terminal
Jump time-domain position in right of speech preempting resources pond 1 and produce random back, if not receiving excellent at the end of random back
First level is higher than that other rights of speech of this terminal seize message, then the right of speech sending this terminal seizes message.
Further, also include：If respectively power terminal receives multiple rights of speech and seizes message, forward wherein preferential
Level highest right of speech seizes message.
Compared with presently, there are self-organizing network synchronization right of speech method for pre-emptively, the present invention provides a kind of orthogonalization
The right of speech in right of speech preempting resources pond seizes collision avoidance method, improves in right of speech preemption processes and uniquely determines one
Right of speech seizes the probability of winner, reduces the collision probability of group service, reduces the right of speech person of seizing further
Group service initiate time delay.
Brief description
Fig. 1 is that the resource pool of embodiment 1 distributes schematic diagram；
Fig. 2 is the right of speech preempting resources pond pattern of embodiment 1；
Fig. 3 is that the right of speech of embodiment 1 seizes flow chart；
Fig. 4 is that the asynchronous transmission right of speech that accesses of one kind of embodiment 2 seizes message schematic diagram；
Fig. 5 is that the asynchronous transmission right of speech that accesses of another kind of embodiment 2 seizes message schematic diagram.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the present invention
Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described it is clear that
Described embodiment is a part of embodiment of the present invention, rather than whole embodiments.
One embodiment of the present of invention proposes right of speech in a kind of MANET and seizes the method that collision avoids, including：
Right of speech preempting resources pond is divided into some mutually orthogonal running time-frequency resources；In seizing with a right of speech, respectively
Terminal takies described mutually orthogonal running time-frequency resource transmission right of speech and seizes message.
In one alternate embodiment, terminal is after the right of speech time of seizing terminates, if not receiving Gao You
The right of speech of first level terminal seizes message, then carry out secondary right of speech and seize, and described secondary right of speech is seized and adopted frequency hopping
Access during jump.
In one alternate embodiment, the secondary running time-frequency resource seized is full with the time-frequency resource allocating once seized
The following condition of foot：In time domain：The each terminal taking identical time slot in a right of speech is seized is robbed in secondary right of speech
Account for the mutually different time slot of middle occupancy；On frequency domain：The difference that same terminal takies in right of speech is seized twice
Frequency domain position.
In one alternate embodiment, the running time-frequency resource that same terminal takies in right of speech is seized twice is complete
Orthogonal.
In one alternate embodiment, described right of speech seizes the synchronous access of support and/or asynchronous access.
In one alternate embodiment, synchronous access also includes：Each right of speech is seized source terminal and is seized money in right of speech
The 1 jump time-domain position in source pond sends right of speech and seizes message, respectively receives described right of speech and seizes the terminal of message and exists
The time-domain position of jumping figure+1 is forwarded.
In one alternate embodiment, if described right of speech seize source terminal receive priority be higher than this terminal its
His right of speech seizes message, then forward other rights of speech described to seize message.
In one alternate embodiment, described asynchronous access includes：Seize the triggered time when described right of speech to be in
When in right of speech preempting resources pond, described right of speech is seized source terminal and is sent position transmission institute in nearest right of speech message
State right of speech and seize message；When described right of speech is seized the triggered time and is in outside right of speech preempting resources pond, described words
Power is seized source terminal and is jumped time-domain position generation random back in right of speech preempting resources pond 1, terminates to random back
Shi Ruowei receives other rights of speech that priority is higher than this terminal and seizes message, then the right of speech sending this terminal is seized
Message.
In one alternate embodiment, also include：If respectively power terminal receives multiple rights of speech and seizes message, turn
The right of speech sending out wherein highest priority seizes message.
Compared with presently, there are self-organizing network synchronization right of speech method for pre-emptively, the present invention provides a kind of orthogonalization
The right of speech in right of speech preempting resources pond seizes collision avoidance method, improves in right of speech preemption processes and uniquely determines one
Right of speech seizes the probability of winner, reduces the collision probability of group service, reduces the right of speech person of seizing further
Group service initiate time delay
Embodiment 1：Orthogonalization right of speech preempting resources pond
The right of speech preempting resources pond of orthogonalization colony terminal：Right of speech preempting resources pond is closed with Termination ID
Connection, reduces the probability that multiple terminals seize same resource pool simultaneously.Under conditions of resource pool position is abundant,
Secondary right of speech preemption techniques are provided to ensure for colony terminal, simultaneously using jump in terms of secondary right of speech seizes access
When frequency hopping access technology, colony terminal carried out right of speech twice and seizes before initiating group service, and second
The position that right of speech seizes the resource pool of occupancy needs to meet following condition：
In time domain：Represent the time slot position that terminal i takies with Time (i)；If first time right of speech is seized
During, the terminal taking time slot j is A, B, C, meets Time (A)=Time (B)=Time (C)
=j, then it is ensured that Time (A)～=Time (B)～=Time (C) in second right of speech preemption processes；
On frequency domain：Same terminal twice right of speech seize occupancy frequency domain position different.
Refer to Fig. 1, right of speech is seized message and sent position is the fixed resource pond being associated with hop count information,
Group service resource pool is the method for salary distribution of the fixation being associated with colony terminal or seizes initiation by right of speech
Person indicates.I.e. all of right of speech is seized source terminal and is jumped time-domain position transmission message 1；All receive right of speech
The terminal seizing message forwards message in the time-domain position of jumping figure+1, the like, seize instruction to right of speech
Message propagates to the whole network.
(1) orthogonalization right of speech preempting resources pond
Assume there is the individual terminal of N (N=16) in self-organizing network, be divided into individual group of M (M=4) and exhale group,
Then each in design Fig. 1 jump as a subframe, each sub-frame division is 4 time slots (Slot), on frequency domain
There are 4 available resource locations, as shown in Fig. 2 { i, j } expression group i (i=1,2,3,4) medium priority rank
Terminal for j (j=1,2 ..., N/M) sends the resource pool that right of speech is seized.
If supporting that terminal carried out 2 right of speech preemption processes, same terminal before initiating group service
Initiating time domain that right of speech seizes twice and frequency domain position is completely orthogonal, in such as Fig. 2, terminal { 1,1 } is first
Time slot 1, frequency 1 is taken when secondary right of speech is seized；When second right of speech is seized, take time slot 4, frequency 4.
Different users will not take identical time-domain resource during right of speech is seized twice, for example, first
In secondary right of speech preemption processes { 1,1 }, { 1,2 }, { 1,3 } and { Isosorbide-5-Nitrae } takies time slot 1, seizes in second right of speech
During { 1,1 }, { 1,2 }, the time slot that { 1,3 } and { Isosorbide-5-Nitrae } takies is respectively 4,3,2 and 1.
If scheme does not support that right of speech is seized twice, after first time, right of speech seized end, i.e. judgement is
No need initiate group service.
(2) right of speech preemption processes
Assume that terminal { 1,2 } and terminal { Isosorbide-5-Nitrae } seize flow process in close Time Triggered right of speech, then terminal { 1,2 }
{ Isosorbide-5-Nitrae } need to wait until that a jump time-domain position is initiated right of speech and seized message, and flow process is as shown in Figure 3.
Step<1>：Terminal { 1,2 } and { 1,4 } take the first time initiation right of speech in Fig. 2 respectively in 1 jump position
Resource location when seizing sends right of speech and seizes message；
Step<2>：The more all of right of speech to be forwarded receiving of neighbor terminal i, j seizes the priority of message,
And seize message priority highest terminal in 1 running time-frequency resource jumping position occupancy in 2 jump positions occupancy rights of speech
Pond forwards its right of speech to seize message.Such as terminal i receives { 1,2 } and the message of { Isosorbide-5-Nitrae }, then in 2 jump positions
{ 1,2 } right of speech of resource pool forwarding terminal { 1,2 } seizes message.Circulate this process, until first time right of speech is robbed
Account for end cycle；If scheme supports that secondary right of speech seizes entrance step 3；Otherwise enter step 5.
Step<3>：Source terminal { 1,2 } and { 1,4 } detect whether that the right of speech receiving the transmission of higher priority terminal is robbed
Account for message：If receiving then it represents that right of speech seizes failure, will not signalling of bouquet business；Without receipts
Arrived, then when second right of speech of occupancy time-frequency pattern is seized, resource pool sends right of speech and seizes message；
Step<4>：The right of speech that neighbor terminal receives source terminal seizes message, forwarding priority highest right of speech
Seize message；
Step<5>：The right of speech time of seizing terminates, and terminal { 1,2 } is ready for sending group service, terminal { Isosorbide-5-Nitrae }
According to whether the right of speech receiving { 1,2 } seizes message, decide whether to initiate group service：If terminal { 1,4 }
Receive the message of { 1,2 }, terminal { Isosorbide-5-Nitrae } will not initiate group service again；If terminal { 1,4 } does not receive { 1,2 }
Message, terminal { Isosorbide-5-Nitrae } thinks that this terminal is successfully robbed and accounts for right of speech, and initiates group service.
Embodiment 2：Asynchronous access
Allow terminal to seize time nearest right of speech and seize configured information in distance triggering right of speech and send resource pool
Transmission right of speech seizes message, and synchronously initiates right of speech without waiting for multiple terminals and seize message.
When control domain resource location is deficienter with respect to colony terminal number, for reducing and other-end choosing
Select identical resource pool and produce collision, can support that asynchronous access right of speech seizes flow process.The resource of the program
Pond allocative decision and right of speech seize message transfer process with embodiment 1, and asynchronous access procedure divides following two fields
Scene describing.
When right of speech is seized the triggered time and is in right of speech preempting resources pond, in nearest right of speech preempting resources pond
Send right of speech and seize message.As shown in figure 4, terminal is just robbed in right of speech when triggering right of speech seizes flow process
Account between 2 jumps of resource pool and 3 jumps, then this terminal directly sends rights of speech in 3 jump positions and seizes message.
When right of speech is seized the triggered time and is in outside right of speech preempting resources pond, that is, the transmission right of speech of distance is seized and is disappeared
The position of breath is 1 jump, and terminal is jumped position 1 and produced random back clock, and when random back clock is
When 0, if also not receiving right of speech to seize message, sending right of speech and seizing message.
As shown in figure 5, terminal 1, terminal 2 all seizes flow process in right of speech preempting resources pond external trigger right of speech,
Assume that terminal 2 is higher than the priority of terminal 1, what terminal 1 produced keeps out of the way jumping figure is 5 jumps, terminal 2 produces
Keep out of the way jumping figure be 3 jump.
Step 1：Terminal 2 sends right of speech in 3 jump positions and seizes message；
Step 2：1 hop neighbor terminal of terminal 2 forwards the right of speech receiving to seize message in 4 jump positions；2
Hop neighbor terminal forwards the right of speech receiving to seize message in 4 jump positions；
Step 3：Jump position 5, the right of speech of 3 hop neighbor forwarding terminals 2 of terminal 2 seizes message, eventually
The clock of keeping out of the way at end 1 is 0, and terminal 1 detects whether that the right of speech receiving terminal 2 seizes message；
If received, judge this terminal and the priority of terminal 2：The priority of this terminal is high, then send
The right of speech of this terminal seizes message；The priority of terminal 2 is high, then the right of speech not retransmiting this terminal is seized and disappeared
Breath, the right of speech of forwarding terminal 2 seizes message；
Without receiving, then send right of speech in 5 jump positions and seize message；
Step 4：Jump position 6, all of right of speech that terminal judges receive seizes message, if only connect
Receive a right of speech and seize message, then forward this right of speech to seize message in 6 jump positions, if receiving multiple words
Power seizes message, then only forward the right of speech of limit priority to seize message.Repetitive process 4, until right of speech is robbed
Accounting for the specified time terminates.
By above-described embodiment as can be seen that orthogonalization right of speech preempting resources pond so that multiple right of speech seize send out
The right of speech playing person is seized message and will not be collided；During jump frequency hopping access technology make between terminal be not in
" deaf " problem；Support that multigroup group service is concurrent；Asynchronous access mechanism can reduce synchronous access procedure
The collision probability brought.The present invention gives self-organizing network right of speech seize the method that avoids of collision so that
In right of speech preemption processes, the fastest determines in group system and uniquely determines that a right of speech seizes winner,
Reduce the collision probability of group service.
One of ordinary skill in the art will appreciate that：The all or part of step realizing said method embodiment can
Completed with the hardware related by programmed instruction, aforesaid program can be stored in an embodied on computer readable and deposit
In storage media, this program upon execution, executes the step including said method embodiment；And aforesaid storage
Medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.
Finally it should be noted that：Above example is only in order to illustrating technical scheme, rather than it is limited
System；Although being described in detail to the present invention with reference to the foregoing embodiments, those of ordinary skill in the art
It should be understood that：It still can be modified to the technical scheme described in foregoing embodiments, or to it
Middle some technical characteristics carry out equivalent；And these modifications or replacement, do not make appropriate technical solution
Essence departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. in a kind of MANET, right of speech is seized and is collided the method avoiding it is characterised in that including：
Right of speech preempting resources pond is divided into some mutually orthogonal running time-frequency resources；
In seizing with a right of speech, each terminal takies described mutually orthogonal running time-frequency resource transmission right of speech and seizes
Message.
2. method according to claim 1 is it is characterised in that also include：Described terminal is once
After the right of speech time of seizing terminates, if the right of speech not receiving high priority terminal seizes message, carry out secondary
Right of speech is seized, and described secondary right of speech is seized and accessed when being jumped using frequency hopping.
3. method according to claim 2 is it is characterised in that the described secondary running time-frequency resource seized
Meet following condition with the time-frequency resource allocating once seized：
In time domain：Take in a right of speech is seized identical time slot each terminal seize in secondary right of speech in take
Mutually different time slot；
On frequency domain：The different frequency domain position that same terminal takies in right of speech is seized twice.
4. according to the method in claim 2 or 3 it is characterised in that same terminal is talked about twice
The running time-frequency resource that power seizes middle occupancy is completely orthogonal.
5. the method according to Claims 1 to 4 any one is it is characterised in that described right of speech is seized
Support synchronous access and/or asynchronous access.
6. method according to claim 5 is it is characterised in that described synchronous access also includes：
Each right of speech is seized the 1 jump time-domain position transmission right of speech in right of speech preempting resources pond for the source terminal and is seized message,
Respectively receive described right of speech and seize the terminal of message and forwarded in the time-domain position of jumping figure+1.
7. method according to claim 6 is it is characterised in that also include：
If described right of speech seize source terminal receive priority be higher than this terminal other rights of speech seize message, turn
Send out other rights of speech described and seize message.
8. method according to claim 5 is it is characterised in that described asynchronous access includes：
When described right of speech is seized the triggered time and is in right of speech preempting resources pond, described right of speech seizes source terminal
Send the position described right of speech of transmission in nearest right of speech message and seize message；
When described right of speech is seized the triggered time and is in outside right of speech preempting resources pond, described right of speech seizes source terminal
Jump time-domain position in right of speech preempting resources pond 1 and produce random back, if not receiving excellent at the end of random back
First level is higher than that other rights of speech of this terminal seize message, then the right of speech sending this terminal seizes message.
9. the method according to claim 6～8 any one is it is characterised in that also include：Each power
If terminal receives multiple rights of speech and seizes message, the right of speech of wherein highest priority is forwarded to seize message.
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| CN109842946A (en) * | 2017-11-29 | 2019-06-04 | 华为技术有限公司 | The method that preempting resources carry out data transmission |
| CN111988236A (en) * | 2019-05-22 | 2020-11-24 | 华为技术有限公司 | Method, device and system for resource preemption |
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| US20070140303A1 (en) * | 2005-12-21 | 2007-06-21 | Korea Electronics Technology Institute | Real-time wireless sensor network protocol having linear configuration |
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| US20070140303A1 (en) * | 2005-12-21 | 2007-06-21 | Korea Electronics Technology Institute | Real-time wireless sensor network protocol having linear configuration |
| CN1984382A (en) * | 2006-05-17 | 2007-06-20 | 华为技术有限公司 | Method for allocating and alternating speech right and related group calling system |
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| CN109842946A (en) * | 2017-11-29 | 2019-06-04 | 华为技术有限公司 | The method that preempting resources carry out data transmission |
| WO2019105322A1 (en) * | 2017-11-29 | 2019-06-06 | 华为技术有限公司 | Method for preempting resources for data transmission |
| CN109842946B (en) * | 2017-11-29 | 2023-01-13 | 华为技术有限公司 | Method for preempting resource to perform data transmission |
| CN111988236A (en) * | 2019-05-22 | 2020-11-24 | 华为技术有限公司 | Method, device and system for resource preemption |
| WO2020233686A1 (en) * | 2019-05-22 | 2020-11-26 | 华为技术有限公司 | Resource preemption method, device and system |
| CN111988236B (en) * | 2019-05-22 | 2022-07-29 | 华为技术有限公司 | Resource preemption method, device and system |
| US11785627B2 (en) | 2019-05-22 | 2023-10-10 | Huawei Technologies Co., Ltd. | Resource preemption method, apparatus, and system |
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| CN106470097B (en) | 2019-04-05 |
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