CN104993919A - Efficient ad-hoc network communication method - Google Patents
Efficient ad-hoc network communication method Download PDFInfo
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- CN104993919A CN104993919A CN201510382867.2A CN201510382867A CN104993919A CN 104993919 A CN104993919 A CN 104993919A CN 201510382867 A CN201510382867 A CN 201510382867A CN 104993919 A CN104993919 A CN 104993919A
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Abstract
The invention discloses an efficient ad-hoc network communication method. According to the method provided by the invention, a beginning time of a synchronous head of a frame signal is obtained by using a synchronization algorithm according to the synchronization characteristics of a TDMA system; then a communication time delay between ad-hoc network members is obtained according to the beginning time of a slot time; a distance between the members is obtained according to the time delay; and finally a proper time slot GP length is determined according to the distance between both communication sides. According to the invention, the communication distance between the both communication parties can be indirectly obtained at low cost, thereby intelligently and adaptively sensing and adjusting a sending signal format to minimize GP expenses and improve the transmission efficiency.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of efficient self-organized network communication method under distance large scale change condition.
Background technology
For group-net communication, multiple access access comparatively commonly CSMA/TDMA, mainly divides channel, avoids colliding with one another in time domain.Time distant, CSMA shakes hands expense comparatively greatly back and forth, so cannot use CSMA for longer-distance communication scenes.Common in telecommunication situation is exactly TDMA, and it is synchronous that whole net keeps in time domain, and carries out minimum particle size by time slot and divide channel.For frame format design in time slot, common way as shown in Figure 1.
As shown in Figure 1; substantially synchronous (SYNC), data (DATA) and protection interval (GP) three part composition is had; the object of GP is mainly in order to ensure transmission range; calculate so normally add a surplus according to supported maximum distance divided by the light velocity, implement comparatively simple like this.But when changing for communication distance large scale (as from tens kilometers to thousands of kilometer), if also designed according to maximum distance, the too high expense of GP accounting will be caused excessive, even also cannot raising efficiency during short range transmission.
Summary of the invention
In view of this, the invention provides a kind of efficient self-organized network communication method, can efficiency of transmission be promoted.
A kind of self-organized network communication method of the present invention, comprises the steps:
Step 1, the time of member each in self-organized network communication system is carried out synchronously: the time slot initial time by the frame signal of each member is all aligned to synchronization, represents with Tnstart; Wherein, the protection interval GP initial length of the time slot of employing is determined according to the distance between the member of two farthest, and the distance between each member of self-organizing network system all can obtain at any time.
Step 2, control any member X time slot initial time send signal, then other member's Received signal strength;
Step 3, the frame signal of member X received for any member Y, according to the Tnsync initial time of reception of synchronous head in frame synchornization method determination frame signal;
Step 4, to calculate the time delay ▽ T that member Y receives member X frame signal according to ▽ T=Tnsync-Tnstart, obtain the distance of member X to member Y thus;
Step 5, before member X communicates with member Y, first according to the distance of communicating pair, determine to protect interval GP length in the frame signal time slot that both sides are mutual, according to the form of this protection interval GP length determination frame signal, finally communicate with other member again.
The present invention has following beneficial effect:
(1) feature that the present invention is synchronous according to tdma system self, synchronized algorithm is first adopted to obtain the initial time of the synchronous head of frame signal, then according to the initial time of time slot, obtain the communication delay between MANET member, then obtain the distance between member according to time delay, finally determine suitable time slot GP length according to both sides' distance.The present invention is with the communication distance of the indirect obtaining communication both sides of small cost, thus intelligent adaptive perception adjustment sends signal format, minimizes GP expense to reach, and promotes efficiency of transmission.
Accompanying drawing explanation
Fig. 1 is existing frame signal time slot format schematic diagram.
Fig. 2 is frame signal transmitting-receiving moment point schematic diagram.
Embodiment
To develop simultaneously embodiment below in conjunction with accompanying drawing, describe the present invention.
A kind of self-organized network communication method of the present invention, comprises the steps:
Step 1, the time of member each in self-organized network communication system is carried out synchronously: the time slot initial time by the frame signal of each member is all aligned to synchronization, as shown in Figure 2, represents with Tnstart; Wherein, the protection interval GP initial length of the time slot of employing is determined according to the distance between the member of two farthest;
Step 2, control any member X time slot initial time send signal, then other member's Received signal strength;
Step 3, the frame signal of member X received for member Y, according to the Tnsync initial time of reception of synchronous head in frame synchornization method determination frame signal;
Step 4, to calculate the time delay ▽ T that member Y receives member X frame signal according to ▽ T=Tnsync-Tnstart, obtain the distance of member X to member Y thus;
Step 5, before member X communicates with member Y, first according to the distance of communicating pair, determine to protect interval GP length in the frame signal time slot that both sides are mutual, according to the form of this protection interval GP length determination frame signal, finally communicate with other member again.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a self-organized network communication method, is characterized in that, comprises the steps:
Step 1, the time of member each in self-organized network communication system is carried out synchronously: the time slot initial time by the frame signal of each member is all aligned to synchronization, represents with Tnstart; Wherein, the protection interval GP initial length of the time slot of employing is determined according to the distance between the member of two farthest;
Step 2, control any member X time slot initial time send signal, then other member's Received signal strength;
Step 3, the frame signal of member X received for any member Y, according to the Tnsync initial time of reception of synchronous head in frame synchornization method determination frame signal;
Step 4, to calculate the time delay ▽ T that member Y receives member X frame signal according to ▽ T=Tnsync-Tnstart, obtain the distance of member X to member Y thus;
Step 5, before member X communicates with member Y, first according to the distance of communicating pair, determine to protect interval GP length in the frame signal time slot that both sides are mutual, according to the form of this protection interval GP length determination frame signal, finally communicate with other member again.
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| CN201510382867.2A CN104993919A (en) | 2015-07-02 | 2015-07-02 | Efficient ad-hoc network communication method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107205262A (en) * | 2016-03-18 | 2017-09-26 | 大唐移动通信设备有限公司 | A kind of data transmission method and device based on wireless self-organization network |
| CN107801209A (en) * | 2016-09-06 | 2018-03-13 | 电信科学技术研究院 | A kind of wireless self-networking communication means and node |
| CN116074960A (en) * | 2023-03-06 | 2023-05-05 | 天地信息网络研究院(安徽)有限公司 | Time slot receiving and transmitting state allocation method for multi-beam directional ad hoc network |
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| CN101005329A (en) * | 2006-01-20 | 2007-07-25 | 富士通株式会社 | Wireless communication system and wireless communication method |
| CN102484548A (en) * | 2010-07-07 | 2012-05-30 | 华为技术有限公司 | Deterministic placement of timestamp packets using a periodic gap |
| CN102547965A (en) * | 2011-12-22 | 2012-07-04 | 中国科学院上海微系统与信息技术研究所 | Application method of global positioning system (GPS) time service pulse in medium and high speed sensor network |
| US20150085852A1 (en) * | 2013-09-24 | 2015-03-26 | Hitachi, Ltd. | Communication system and time synchronization method |
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2015
- 2015-07-02 CN CN201510382867.2A patent/CN104993919A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005329A (en) * | 2006-01-20 | 2007-07-25 | 富士通株式会社 | Wireless communication system and wireless communication method |
| CN102484548A (en) * | 2010-07-07 | 2012-05-30 | 华为技术有限公司 | Deterministic placement of timestamp packets using a periodic gap |
| CN102547965A (en) * | 2011-12-22 | 2012-07-04 | 中国科学院上海微系统与信息技术研究所 | Application method of global positioning system (GPS) time service pulse in medium and high speed sensor network |
| US20150085852A1 (en) * | 2013-09-24 | 2015-03-26 | Hitachi, Ltd. | Communication system and time synchronization method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107205262A (en) * | 2016-03-18 | 2017-09-26 | 大唐移动通信设备有限公司 | A kind of data transmission method and device based on wireless self-organization network |
| 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 |
| CN107801209A (en) * | 2016-09-06 | 2018-03-13 | 电信科学技术研究院 | A kind of wireless self-networking communication means and node |
| CN116074960A (en) * | 2023-03-06 | 2023-05-05 | 天地信息网络研究院(安徽)有限公司 | Time slot receiving and transmitting state allocation method for multi-beam directional ad hoc network |
| CN116074960B (en) * | 2023-03-06 | 2023-06-02 | 天地信息网络研究院(安徽)有限公司 | Time slot receiving and transmitting state allocation method for multi-beam directional ad hoc network |
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Application publication date: 20151021 |