CN103686875B - A kind of connection control method of the transmission rates such as wireless nano sensor network Lothrus apterus - Google Patents
A kind of connection control method of the transmission rates such as wireless nano sensor network Lothrus apterus Download PDFInfo
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Abstract
The invention discloses the connection control method of the transmission rates such as a kind of wireless nano sensor network Lothrus apterus, calculated the Access Control of access node by the simple table look-up on access node and the low complex degree interaction step of via node and via node.Including step: by sending an access request control bag, access node notifies that via node has new data stream to need relaying, and wait that via node informs the time point that first bit symbol sends；Via node once receives access request and controls bag, tables look-up and calculates the time point that first bit symbol of this access node sends, and notifying access node by replying a control bag.Wherein, the method for the time point that via node sends for first bit symbol calculating access node is the core of the present invention.
Description
Technical field
The present invention relates to the connection control method of the transmission rate such as Lothrus apterus in a kind of radio communication,
The method is applicable to wireless nano sensor network.
Technical background
Along with the fast development of nanotechnology in the last few years, it is expected in the near future to manufacture
Go out the sensor i.e. nano-sensor of nanoscale size.By nano-sensor by radio communication skill
Art carries out being connected with each other formed network and is then referred to as wireless nano sensor network.Such network
Have a very wide range of applications prospect in fields such as environment, medical treatment, industry.Due to nanosensor
Device node only has the size of the most hundreds of nanometer, and the disposal ability of its nanoprocessor extremely has
Limit, therefore design has the communication protocol of extremely low computation complexity is wireless nano sensor network
One of key issue required study.
Each layer subprotocol for wireless nano sensor network communication protocol designs, including physics
The layer design of modulating mode, the design etc. of multiple access method of data link layer, be required for examining
Consider to computation complexity problem.About the design of physical layer modulation pattern, owing to detachable key switch is adjusted
System i.e. OOK modulation has relatively low complexity, and wireless nano-sensor has wide application prospects
One of modulation system.OOK modulation system is to send a pulse signal to represent transmission bit
" 1 ", and keep not sending any voltage signal on radio peace and quiet i.e. antenna to represent transmission bit
“0”.And the design of the Media access contorl method for data link layer, the most
A lot of document and patent research is had to devise the multiple access method being applicable to different networks,
Such as it is applicable to IEEE 802.11 MAC protocol etc. of WLAN.But these methods are all
Design towards macroscopical node with higher computational power, they be designed without deliberately chase after
Ask the multiple access method of relatively low computation complexity, such as WLAN based on complicated
The csma mechanism of back off algorithm, uses the Cellular Networks of CDMA technology then to lead to
Cross and generate complicated mutually orthogonal spread spectrum code to realize multiple access access.So, these are existing
The nano-sensor that the most inapplicable disposal ability of multiple access method of high complexity is extremely limited saves
Point.
For using the wireless nano sensor network of OOK modulation, if each nano-sensor
Node is all taked to send mode as follows: often send out after a bit symbol idle one fixing
Retransmit next bit symbol after time interval T, then can be substantially reduced between nanometer nodes
Symbol sends the occurrence frequency of conflict.This time interval T all phases due to all the sensors node
With, so all of sensor node has identical transmission rate.This based on OOK modulation
Two bit symbols send between the transmission mode of an empty upper set time be referred to as time domain and extend
OOK modulation.But, the OOK modulation system extended for existing time domain, when two
The adjacent node that will start to send bit information just starts to send first ratio at synchronization
Special symbol, i.e. first bit there occurs conflict, then their follow-up all bits send
Will clash, thus substantial amounts of bit reception error on receiving node can be caused.Therefore,
Design and develop one to modulate based on OOK, there is lower complexity, energy effective coordination nanometer nodes
The connection control method of delivery time can effectively reduce and even completely eliminates symbol conflict.
Summary of the invention
In order to overcome in the OOK modulation technique that existing time domain extends it may happen that continuous symbol conflict
Deficiency, the present invention proposes connecing of the transmission rates such as a kind of wireless nano sensor network Lothrus apterus
Access control method.The method is coordinated to receive by the internodal operation of lower complexity effectively
Meter Jie Dian delivery time, thus avoid the transmission generation continuous symbol conflict of two adjacent nodes,
Reach without symbol conflict.Therefore this technology can apply in wireless nano sensor network, effectively
Ensure nano-sensor bit send reliability.
In order to realize above-mentioned technical assignment, the present invention uses following technical solution:
1, the connection control method of the transmission rate such as a kind of wireless nano sensor network Lothrus apterus,
It is characterized in that: it is by " foundation of cycle translation scale " and " access based on cycle translation scale
Control " two parts composition；Wherein, described " foundation of cycle translation scale " comprises following concrete
Step:
Step one: i=1 is set；
Step 2: increasing by the i-th row in cycle translation scale, this row comprises two cells, the
One cell is used for storing integer value, and second cell is used for storing fractional value；
Step 3: be 0 by the first cell curriculum offering of the i-th row of table, and by the of table
Second cell content of i row is set toWhereinParameter
TSBeing that physical layer sends time of being consumed of a modulation symbol, T is according to aspects such as network delays
Requirement and time interval that on the same node that pre-sets, adjacent two bits send, it
It is TSThe value of integral multiple；
Step 4: arrange i ← i+1, if i≤K, jumps to step 2, otherwise performs step
Four.Wherein,
Step 5: terminate.
Wherein, described " Access Control based on cycle translation scale " comprises following concrete step
Rapid:
Step one: during access node notifies to one access request control bag of via node transmission
This access node of node that continues has new data stream to mail to this via node；
Step 2: via node receives the access request control bag that access node is sent；
Step 3: via node arranges i=1;
Step 4: via node reads the of the i-th row in the cycle translation scale oneself stored
The value of one cell storage, remembers that this value is Flag [i].If Flag [i] is 0, then read i-th
The value of second cell storage of row, remembers that this value is Δ Ti, and jump to step 6;If Flag [i]
It is 1, then performs step 5；
Step 5: via node arranges i ← i+1, if i > K, then end operation and give do not connect
Ingress replys any bag that controls to represent its access request of refusal；If i≤K, then jump to step
Rapid four；
Step 6: first the first cell curriculum offering of the i-th row is 1 by via node, so
After by t1+ΔTiThis time point record is sent to access in control bag to be replied and by this control bag
Node, wherein Δ TiIt is from the value read-out by second cell of form the i-th row in step 4, as
Really current access node is first access node then t1=0, otherwise t1It is first access node
Next bit sends time point；
Step 7: the reply that access node receives from via node controls bag, then from this bag
Transmission time point t specified by middle reading via node1+ΔTi；
Step 8: access node is at time point t1+ΔTiFirst bit of upper transmission, and every time
Between T send a bit, until distribute all information bits.
Step 9: via node receives access node transmitted information bit, when having received this
After all information bits of access node, it is 0 by the first cell curriculum offering of the i-th row.
The technical characterstic of the present invention and effect:
1) present invention has relatively low implementation complexity.Owing to each via node is to be stored
Cycle translation scale the most first establishes at wireless nano sensor network deployment phase, is connecing
Enter control stage, access node and via node and only need to simply control pack receiving and transmitting and place
Reason.
2) instant invention overcomes the OOK modulation of time domain extension it may happen that continuous symbol conflict should
Weak point, it is achieved send without symbol conflict.
3) there is identical transmission rate due to all sending nodes, invention achieves preferably joint
Point sends fairness.
Accompanying drawing explanation
Fig. 1 is that the nano-sensor data of the present invention transmit schematic diagram.
Fig. 2 is the execution process of the connection control method of the present invention.
Fig. 3 is the bit symbol delivery time schematic diagram of access node.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings.
Production phase at nano-sensor or the deployment rank in wireless nano sensor network
Section, the method for building up translating scale according to the cycle of the present invention establishes memory cycle translational movement
This table is also stored in each nano-sensor by table.
In the operation phase of nano sensor network, i.e. relay when there being certain nano-sensor node
When node needs to relay multiple data stream, as it is shown in figure 1, this via node is responsible for coordinating each
The bit symbol delivery time of access node.
Specifically, when there being a new data stream flowing through this via node to occur, such as Fig. 1
In data stream 2, then the operation of access node 2 and via node is as shown in Figure 2.According to this
The bright step described by Access Control based on cycle translation scale, access node 2 is first in nothing
Send an access request to via node when of the line media free time and control bag, owning of this bag
Bit continuously transmits away, and bit does not stay the time idle between sending.When via node receives this
After access request controls bag, in the cycle translation scale oneself stored, from the beginning of the first row
Read line by line, if it find that the first cell storage value of all K row of table is all 1, then
End operation and to access node reply any control bag with represents refuse its access request；
It is the row of 0 if the read out first cell storage value, then reads second unit in this row
Lattice storage value, uses Δ TiRepresent this value.Via node is by the first cell curriculum offering of this row
Be 1 with represent the cycle translational movement of this row be arranged to certain access node use, then will
t1+ΔTiThis time point record is sent to access joint in control bag to be replied and by this control bag
Point, if current access node is first access node, t1=0, otherwise t1It is first access
The next bit of node sends time point.Access node receives the reply control from via node
System bag, then reads the transmission time point t specified by via node from this bag1+ΔTi, and time
Between put t1+ΔTiFirst bit of upper transmission, per interval T sends a bit afterwards, until sending out
Till complete all information bits.When via node has received all information bits of this access node
After, the first cell content recovery of the i-th row be 0 to represent the cycle translational movement of this row after
Can use arranged to certain access node.
After each new access node starts to send according to the arrangement time point of via node, each
The symbol of access node sends and does not the most conflict, sending out of 4 access nodes as shown in Figure 3
Send.
Wherein, described " foundation of cycle translation scale " following concrete steps are comprised:
Step one: i=1 is set；
Step 2: increasing by the i-th row in cycle translation scale, this row comprises two cells, the
One cell is used for storing integer value, and second cell is used for storing fractional value；
Step 3: be 0 by the first cell curriculum offering of the i-th row of table, and by the of table
Second cell content of i row is set toWhereinParameter
TSBeing that physical layer sends time of being consumed of a modulation symbol, T is according to aspects such as network delays
Requirement and time interval that on the same node that pre-sets, adjacent two bits send, it
It is TSThe value of integral multiple；
Step 4: arrange i ← i+1, if i≤K, jumps to step 2, otherwise performs step
Four.Wherein,
Step 5: terminate.
Wherein, described " Access Control based on cycle translation scale " comprises following concrete step
Rapid:
Step one: during access node notifies to one access request control bag of via node transmission
This access node of node that continues has new data stream to mail to this via node；
Step 2: via node receives the access request control bag that access node is sent；
Step 3: via node arranges i=1;
Step 4: via node reads the of the i-th row in the cycle translation scale oneself stored
The value of one cell storage, remembers that this value is Flag [i].If Flag [i] is 0, then read i-th
The value of second cell storage of row, remembers that this value is Δ Ti, and jump to step 6;If Flag [i]
It is 1, then performs step 5；
Step 5: via node arranges i ← i+1, if i > K, then end operation and give do not connect
Ingress replys any bag that controls to represent its access request of refusal；If i≤K, then jump to step
Rapid four；
Step 6: first the first cell curriculum offering of the i-th row is 1 by via node, so
After by t1+ΔTiThis time point record is sent to access in control bag to be replied and by this control bag
Node, wherein Δ TiIt is from the value read-out by second cell of form the i-th row in step 4, as
Really current access node is first access node then t1=0, otherwise t1It is first access node
Next bit sends time point；
Step 7: the reply that access node receives from via node controls bag, then from this bag
Transmission time point t specified by middle reading via node1+ΔTi；
Step 8: access node is at time point t1+ΔTiFirst bit of upper transmission, and every time
Between T send a bit, until distribute all information bits.
Step 9: via node receives access node transmitted information bit, when having received this
After all information bits of access node, it is 0 by the first cell curriculum offering of the i-th row.
Claims (1)
1. a connection control method for the transmission rate such as wireless nano sensor network Lothrus apterus,
It is characterized in that: it is by " foundation of cycle translation scale " and " translates scale based on the cycle
Access Control " two parts composition；Wherein, described " foundation of cycle translation scale " comprises
Following concrete steps:
Step one: i=1 is set；
Step 2: increasing by the i-th row in cycle translation scale, this row comprises two cells,
First cell is used for storing integer value, and second cell is used for storing fractional value；
Step 3: be 0 by the first cell curriculum offering of the i-th row of table, and by table
Second cell content of the i-th row is set toWhereinGinseng
Number TSBeing that physical layer sends time of being consumed of a modulation symbol, T is according to network delay etc.
The requirement of aspect and time that on the same node that pre-sets, adjacent two bits send
Interval, it is TSThe value of integral multiple；
Step 4: arrange i ← i+1, if i≤K, jumps to step 2, otherwise performs step 4；
Wherein,
Step 5: terminate；
Wherein, described " Access Control based on cycle translation scale " comprises following concrete step
Rapid:
Step 1: during access node notifies to one access request control bag of via node transmission
This access node of node that continues has new data stream to mail to this via node；
Step 2: via node receives the access request control bag that access node is sent；
Step 3: via node arranges i=1；
Step 4: via node reads the i-th row in the cycle translation scale oneself stored
The value of first cell storage, remembers that this value is Flag [i]；If Flag [i] is 0, then read
The value of second cell storage of the i-th row, remembers that this value is Δ Ti, and jump to step 6；If
Flag [i] is 1, then perform step 5；
Step 5: via node arranges i ← i+1, if i > K, then end operation and not giving
Access node replys any bag that controls to represent its access request of refusal；If i≤K, then jump to
Step 4；
Step 6: first the first cell curriculum offering of the i-th row is 1 by via node, so
After by t1+ΔTiThis time point record is sent in control bag to be replied and by this control bag
Access node, wherein Δ TiIt is from read-out by second cell of form the i-th row in step 4
Value, if current access node is first access node, t1=0, otherwise t1It is first to connect
The next bit of ingress sends time point；
Step 7: the reply that access node receives from via node controls bag, then from this bag
Transmission time point t specified by middle reading via node1+ΔTi；
Step 8: access node is at time point t1+ΔTiFirst bit of upper transmission, and every
Time T sends a bit, until distributing all information bits；
Step 9: via node receives access node transmitted information bit, when having received this
After all information bits of access node, it is 0 by the first cell curriculum offering of the i-th row.
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| US20090201850A1 (en) * | 2008-02-08 | 2009-08-13 | Yahoo! Inc. | Location tracking based on proximity-based ad hoc network |
| CN101631347A (en) * | 2008-07-15 | 2010-01-20 | 展讯通信（上海）有限公司 | Base station and method for operating traffic thereof |
| CN101834913A (en) * | 2010-04-19 | 2010-09-15 | 中兴通讯股份有限公司 | Wireless sensor network, mobile terminal and interconnection method and system thereof |
| US20110182370A1 (en) * | 2010-01-22 | 2011-07-28 | Qualcomm Incorporated | Method and apparatus for acknowledgment detection during preamble transmission |
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| US20090201850A1 (en) * | 2008-02-08 | 2009-08-13 | Yahoo! Inc. | Location tracking based on proximity-based ad hoc network |
| CN101631347A (en) * | 2008-07-15 | 2010-01-20 | 展讯通信（上海）有限公司 | Base station and method for operating traffic thereof |
| US20110182370A1 (en) * | 2010-01-22 | 2011-07-28 | Qualcomm Incorporated | Method and apparatus for acknowledgment detection during preamble transmission |
| CN101834913A (en) * | 2010-04-19 | 2010-09-15 | 中兴通讯股份有限公司 | Wireless sensor network, mobile terminal and interconnection method and system thereof |
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