CN108934020A - Microwave Net channel access method and system based on narrow-band beam directional aerial - Google Patents
Microwave Net channel access method and system based on narrow-band beam directional aerial Download PDFInfo
- Publication number
- CN108934020A CN108934020A CN201810507165.6A CN201810507165A CN108934020A CN 108934020 A CN108934020 A CN 108934020A CN 201810507165 A CN201810507165 A CN 201810507165A CN 108934020 A CN108934020 A CN 108934020A
- Authority
- CN
- China
- Prior art keywords
- node
- antenna
- time slot
- signaling
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000011664 signaling Effects 0.000 claims abstract description 119
- 230000005540 biological transmission Effects 0.000 claims abstract description 44
- 238000004891 communication Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 24
- 230000001360 synchronised effect Effects 0.000 claims description 19
- 230000004044 response Effects 0.000 claims description 15
- 230000006855 networking Effects 0.000 claims description 8
- 230000008844 regulatory mechanism Effects 0.000 claims description 7
- 230000001934 delay Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000002123 temporal effect Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/008—Transmission of channel access control information with additional processing of random access related information at receiving side
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
The invention discloses the Microwave Net channel access methods based on narrow-band beam directional aerial, include the following steps, main access superframe structure multi-hop ad hoc network of network, with multi-hop ad hoc network runing time benchmark, send synchronization signal；Other network nodes capture synchronization signal；Acquisition success then obtains one-way synchronization；And broadcast singal is sent using broadcast signaling time slot according to MAC Address, it is searched on other network node broadcast signaling time slots, establishes neighbours' link relationship；Ranging go forward side by side walking along the street diameter propagation delay time correction；Neighbours' discovery and tested rotating platform are carried out, obtains and most preferably sends and receives antenna；Sub- frequency channel random access A time slot, the channel access small time slot of each time slot；Within the period, M channel access small time slot, according to MAC Address mean allocation；The present invention is based on Microwave Net and distributed narrow-band beam directional aerial, realize that reliable and stable transmission, directional aerial quickly adjust in real time under high motor-driven scene, effectively improve network synthesis communication performance.
Description
Technical field
The present invention relates to Microwave Net research fields, in particular to based on the Microwave Net channel of narrow-band beam directional aerial
Cut-in method and system.
Background technique
Navy formation will constantly change network topology structure with different Training And Operations demands, therefore it is corresponded to
The channel access protocol designs of distributed wireless networks be always research focus, signal of the tradition based on omnidirectional antenna, which is broadcasted, to be passed
The technical research of defeated model is very mature.And the oriented network sent and received signals using directional aerial transmits mould in signal
Great variety will occur in terms of type, these existing channel access schemes based on wireless signals broadcast model will no longer be suitable for
Oriented network needs to study the new and effective channel access technology for matching new channel model.
Different with the overhead static networking application of land microwave radio relay equipment, navy formation's Microwave Net has as follows
Characteristic：Network node quantity is less：Even large-scale form into columns, such as an aircraft carrier hits group, the quantity on naval vessel also one in network
As do not exceed 10；The diversity of network topology：Under different Training And Operations modes, position of the different naval vessels in formation
Biggish variation to occur, and lead to the network topology for occurring different；The mobility of network node：Naval vessel is typically at row
It sails in state, therefore Microwave Net must have stronger communication in moving letter ability；
The communication technology of oriented networks many at present requires to rely on global position system or other measures provide
Node location information, but be undoubtedly under Military Application background abnormally dangerous and fatal；More than hip-based platform deck
Superstructure part-structure it is complicated, be difficult to realize and realize the 360 ° of unobstructed coverings of warship surrounding by single antenna, this will lead
It causes network radio station that can not carry out reliable communication with all mid-side nodes, while being also difficult to find a system height among complicated superstructure
The unobstructed installation of 360 ° of realization antenna of point.
Summary of the invention
The shortcomings that it is a primary object of the present invention to overcome the prior art and deficiency, are provided based on narrow-band beam directional aerial
Microwave Net channel access method.
It is a further object of the present invention to provide the Microwave Net channel access systems based on narrow-band beam directional aerial.
The purpose of the present invention is realized by the following technical solution：
Microwave Net channel access method based on narrow-band beam directional aerial, includes the following steps：
Main, S1, the network multi-hop ad hoc network being followed by into superframe structure that is switched on is accounted for multi-hop ad hoc network runing time benchmark
With the broadcast signaling time slot of the first sub- frequency, and the synchronous letter of multi-hop ad hoc network time reference information is sent using more antennas in turn
Number；
S2, multi-hop ad hoc network other network nodes synchronize signal capture；Other network nodes include to have networked
Network node and the network node that does not network；
S3, the network node X root antenna trapping of multi-hop ad hoc network is not accessed to some networking neighboring network node
After the synchronization signal that y root antenna is sent, the network node for not accessing multi-hop ad hoc network obtains one-way synchronization；
S4, realize that the network node of one-way synchronization uses the broadcast signaling of itself according to the MAC Address of itself in overclocking
Time slot sends broadcast singal, while continuing searching on the broadcast signaling time slot of other network nodes, until establishing neighbours' link
Relationship, to can be carried out data traffic transmission；
S5, the network node of one-way synchronization and its higher level's Time Synchronization Network node using respective broadcast signaling time slot into
Row ranging carries out path transmission time delay adjustment；
The mutual discovery mechanism of neighbor node and the real-time Regulation mechanism of antenna alignment are used between S6, network node, are obtained most
Good transmission antenna and optimum reception antenna；
S7, it is based on best transmission antenna and optimum reception antenna, when the channel random access A of a sub- frequency of superframe structure
Gap, the channel access small time slot of each time slot；The channel of one sub- frequency has 4, and the channel of each A time slot has 4；
S8, withA A time slot is a channel access period to have M channel access small time slot in one cycle, press
M default network nodes are averagely allocated to according to MAC Address is fixed.
In step S1, in the multi-hop ad hoc network of the overclocking structure, an overclocking is made of M son frequency, and M indicates that network is opened
Preset network node quantity before logical；The preset network node quantity typical set-up value is：2,4,8,12；
The son frequency, the time slot of son frequency different function containing three classes：Broadcast signaling time slot B S, channel random access time slot
A, data transmission slots D；
The broadcast message time slot includes that L*N broadcast signaling small time slot and 1 time delay protect time slot, for multi-hop ad hoc network
Some network node L*N root narrow-band beam directional aerial in network sends a signaling-information in turn, in one of overclocking
M broadcast message time slot be averagely allocated to M default network nodes according to MAC Address is fixed；
The channel random access time slot protects time slot containing 4 small signalling time slots and corresponding 4 time delays, according to MAC
Location fixed allocation is used to 4 different network nodes；4 different network nodes can send business on the small time slot of oneself and build
Chain application signal RTS, business link setup approval signal CTS, data slot receive the response of CRC result；
The data transmission slots are for the data transmission between network node, time span 10ms, network node benefit
Data slot resource reservation is carried out with channel random slot；
The time span of one overclocking is：
Tf=40*M+17*M*TG+(L*N+M)*M*Ts；
Wherein, TsFor the time span of signaling-information, TGFor time delay guard time, L is number of sectors, and N is each sector institute
The narrowband velocity of wave directional aerial quantity of installation；
Main, the network is Microwave Net radio station, when the multi-hop ad hoc network runing time benchmark is Microwave Net radio station
Between benchmark；The MAC Address in the Microwave Net radio station is 0；
In step S2, detailed process is：Other network nodes of multi-hop ad hoc network first in turn using odd-numbered antenna into
Line synchronising signal capture, capture unsuccessfully reuse even number antenna and synchronize signal capture, recycle always, until certain root antenna at
Function captures synchronization signal；Wherein the time that receives of every antenna is Tf+Ts, i.e. super frame tim e is plus signaling-information
Time span；
In step S3, the node obtains one-way synchronization, i.e. network operation time of the acquisition containing unidirectional transmission time delay；
In step S5, specially：It is same that junior time synchronization node D2 has been properly received its higher level's time in some overclocking
Walk the synchronization signal of the node D1 carrying temporal information that M root antenna is sent on its time slot, subsequent junior's time synchronization
Node D2 is also successfully received the synchronous letter that higher level's time synchronization node D1 n-th antenna on its signal time slot is sent
Number.Higher level's time synchronization node D1 has calculated double according to the synchronization signal relevant peaks detection time of junior time synchronization node D2
The signal propagation delay time T of sided：
Td=(TT-Tsyn-T+(M-N)Ts)/2,
Wherein, the M root antenna that TT is higher level's time synchronization node D1 sends signal time and detects that junior's time is same
Walk the time timing cycle of the synchronous head signal of the nth root antenna of node D2, TsynFor the time span of synchronous head signal, T is super
Interval in frame structure between the time slot of higher level's time synchronization node D1 and the time slot of junior time synchronization node D2；
Higher level's time synchronization node D1 will be next super after calculating itself and the distance of junior's time synchronization node D2
Higher level time synchronization node D1, higher level's time synchronization node D1 will be given to be repaired according to distance apart from notice on the time slot of oneself frequently
The just Network Time Base of oneself；
In step S6, the mutual discovery mechanism process of neighbor node is as follows：
T1, M broadcast signaling time slot allocation for including with regard to a superframe by MAC Address to multi-hop ad hoc network M pre- rule
Draw node；
Network node after T2, networking is sent using L*N root antenna in turn in itself predistribution broadcast signaling time slot
The synchronous signaling signal of 360 degree of omnidirectionals covering；
After T3, network node realize one-way synchronization, by and state of the network wherein between M-1 node be defined as two kinds：
Non- neighbours' node state SNNWith neighbor node state SN, when continuous 5 superframes of neighbor node do not receive the signaling-information of other side,
Then dress changes non-neighbor node into；When non-neighbor node receives the signaling-information of other side, then neighbor node is converted to；
The L*K ° difference that T4, node 1 are sent using 2 time slot of node that an antenna monitors non-neighbor node every time
The synchronous signaling signal in direction replaces antenna on next time slot of node 2 and continues to supervise if all receiving failure
It listens, node 1 repeats reception process, until certain root antenna is successfully received the broadcast synchronization signaling that certain root antenna of node 2 is sent
Signal, i.e. completion neighbor node unidirectionally find that the node 2 of non-neighbor node is converted to the node 2 of neighbor node；Use antenna
Sequence is since odd-numbered antenna；
T5, for node 1, if unidirectionally found using the neighbor node of the complete paired node 2 of W root antenna, use W
Two adjacent antennas of root antenna carry out signal reception to 2 subsequent 2 time slots of node respectively, and node 1 is according to three days
The signal receiving quality of line obtains the best transmitting to the corresponding optimum reception antenna of the optimum reception antenna and node 1 of node 2
Antenna；
T6, node 1 obtain best transmitting antenna number information, broadcast of the node 2 at oneself on the time slot of oneself
Optimal antenna number information is obtained on time slot；
In step S6, the real-time Regulation mechanism of antenna alignment, detailed process is as follows：
After U1, node 1 and 2 neighbor node of node are mutually found, 1 optimum reception antenna of node is XXX, and node 2 most preferably connects
Receipts antenna is YYY, and node 1 monitors the broadcast signaling signal of node 2, L*N root of the record antenna XXX to node 2 using antenna XXX
The reception result of antenna signaling-information, node 2 monitor the broadcast signaling signal of node 1 using antenna YYY, record YYY pairs of antenna
1 signaling-information reception result of node；The reception result is that signal when whether being properly received and be properly received receives noise
Than；
The synchronous signaling letter that U2, another antenna YYY' for being properly received node 2 for 1 antenna XXX of node continuous 2 times are sent
Number, and the signal received signal to noise ratio of antenna combination XXX, YYY of the received signal to noise ratio than currently maintaining are high, then node 1 will update most
The best transmitting antenna of the node 2 of good receiving antenna and corresponding optimum reception antenna, and section is notified on the time slot of oneself
2 best transmitting antenna more new informations of point；Node 2 is using the optimum reception antenna between same mechanism update and node 1 and most preferably
Transmitting antenna；
1 continuous 3 U3, node overclocking are unable to properly receive the broadcast signaling signal of node 2, then take turns in rear 2 overclockings
Stream is monitored using 2 adjacent antennas of antenna XXX, if signal can be properly received, is carried out antenna combination update and is led to
Know node 2；If 2 state of node is converted to non-neighbor node, re-starts neighbor node by whole reception failures, node 1
Discovery mechanism；Node 2 also carries out neighborhood maintenance using same mechanism.
In step S8, detailed process is：In channel access process, according to channel access rule, using the A time slot of RTS,
The A time slot mechanism of the A time slot of CTS, the D time slot of data transmission, ACK, i.e. business sender are small in oneself predistribution channel access
Business, which is sent, to some purpose neighbor node on time slot transmits link setup application signaling RTS, and signaling destination node receives RTS signaling
Signaling CTS is agreed in feedback traffic transmission on oneself predistribution channel access small time slot afterwards.Wherein RTS signaling will carry to be transmitted
The attribute information of data service, including type of service, priority and data volume size, and CTS signaling then carries business transmission speed
The location information of rate and transmission data slot；Business sender is after receiving the CTS response signaling of destination node, then based on correlation
Signaling information sends business datum on specified data slot using indicated speed；In addition the channel access letter between neighbor node
Enable in interactive process, sender by the channel access small time slot of oneself use by recipient on its broadcast signaling time slot lead to
The best transmitting antenna known carries out the transmitting of channel access signaling, and on the channel access time slot of other neighbor nodes, then distinguish
The signaling that other side may send is received using corresponding optimum reception antenna；
The channel access rule has：
Between the neighbor node only found mutually could respectively predistribution channel access small time slot on using pair
Side notifies to send signaling to other side using transmitting antenna；
Come in the channel access small time slot of oneself predistribution temporarily, if there are multiple and different in channel access signaling queue
The signaling to be sent of destination address, then priority based on business to be transmitted carries out signaling queuing, then purpose MAC when ad eundem
The small signaling in location is preferential, wherein ACK response signaling grade highest, RTS with CTS signaling is taken second place and priority is identical.In view of fixed
To the signal transmission characteristics of antenna, multicast or broadcast data business will degenerate for multiple independent unicast services, need and purpose section
Point difference carries out business link setup and data transmission one by one；
After RTS signaling is sent once, if not receiving the CTS response letter of destination node within 3 channel access periods
It enables, then retransmits.It repeats the above process until receiving other side's response signaling or transmission times reaches set upper limit K；
For the signaling small time slot of other M-1 other network nodes in a channel access period, if the time slot is
Belong in SNThe neighbor node of state, then signaling-information is carried out using the antenna of itself in the antenna combination safeguarded therewith connect
It receives；If it is belonging to SNNThe non-neighbor node of state, then it is in idle condition on the time slot, abandons receiving.
Another object of the present invention is achieved through the following technical solutions：Microwave Net letter based on narrow-band beam directional aerial
Road access system：Including the distributing antenna system connected by optical fiber and Microwave Net radio station；
The distributing antenna system includes L sector antenna, is able to achieve 360 ° of hip-based platform horizontal coverings；The antenna
Covering of the fan includes N root narrowband directional aerial, and each sector antenna is responsible for K ° of communication overlay, and L*K is greater than 360 °；Pass through cubicle switchboard
Battle array selects a narrowband directional aerial to carry out sending and receiving for signal, i.e. half-duplex from L*N root narrowband directional aerial on demand
Working mechanism；
The Microwave Net radio station with all mid-side nodes for being communicated.
Compared with prior art, the present invention having the following advantages that and beneficial effect：
1, the present invention constructs multi-hop ad hoc network using superframe structure, guarantees between naval vessels node not by satellite positioning system
Real-time antenna alignment and adjustment when system, in frequency resource utilization efficiency, networking time, channel access time delay and network throughput
Etc. can achieve higher level in terms of indexs.
2, the present invention uses microwave communication, and capacity is big, and channel parameter is small by external action, and the characteristic of channel is relatively stable, and
The high gain of directional aerial, high directivity have preferable airspace anti-interference and ability of anti-interception.
3, the present invention uses distributing antenna system integrated technology, and using narrow-band beam directional aerial, it is single to break tradition
Antenna mounting means realizes 360 ° of unobstructed coverings of warship, and combines the mutual discovery mechanism of neighbor node and antenna alignment real-time
Regulation mechanism, so that Microwave Net radio station and all mid-side nodes carry out reliable communication.
Detailed description of the invention
Fig. 1 is the method flow of the Microwave Net channel access method of the present invention based on narrow-band beam directional aerial
Figure.
Fig. 2 is the superframe structure of the Microwave Net channel access method of the present invention based on narrow-band beam directional aerial
Conceptual schematic drawing.
Fig. 3 is the net that do not network in the Microwave Net channel access method of the present invention based on narrow-band beam directional aerial
Network node synchronizes search mechanisms schematic diagram.
Fig. 4 is the one-way synchronization of the Microwave Net channel access method of the present invention based on narrow-band beam directional aerial
Status diagram of the node R on M time slot of a superframe.
Fig. 5 is that the main lobe wave beam of narrow-band beam directional aerial of the present invention overlaps schematic diagram.
Fig. 6 is the ranging process schematic illustration between the superior and the subordinate's timing node of the invention.
Fig. 7 is that network node carries out the noiseless parallel transmission schematic diagram of business multichannel in the present invention.
Fig. 8 is a data transmission procedure schematic diagram of interior joint 1 and node 3 of the present invention.
Fig. 9 is four sector narrow-band beam directional aerial schematic diagrames in the embodiment of the present invention.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Embodiment 1
Microwave Net channel access method based on narrow-band beam directional aerial, as shown in Figure 1, including the following steps：
The first step：Main, the network of fleet booting is followed by multi-hop ad hoc network into superframe structure, and with itself when
Between benchmark as whole network runing time benchmark, i.e., on the basis of multi-hop ad hoc network runing time, occupy the first sub- frequency it is wide
The signalling time slot is broadcast, and sends the synchronization signal of multi-hop ad hoc network time reference information using L*N root antenna in turn；
In the multi-hop ad hoc network of overclocking structure, superframe structure design as shown in Fig. 2, an overclocking by M son frequently form, M
Preset network node quantity before expression network opening；The preset network node quantity typical set-up value is：2,4,8,12；
The time slot of one son frequency different function containing three classes：Broadcast signaling time slot B S, channel random access time slot A, data pass
Defeated time slot D；
Broadcast message time slot includes that L*N broadcast signaling small time slot and 1 time delay protect time slot, for multi-hop ad hoc network network
In some network node L*N root narrow-band beam directional aerial send a signaling-information in turn, the M in one of overclocking
Broadcast message time slot is averagely allocated to M default network nodes according to MAC Address is fixed；
Channel random access time slot protects time slot containing 4 small signalling time slots and corresponding 4 time delays, solid according to MAC Address
Surely 4 different network nodes are distributed to use；4 different network nodes can send business link setup Shen on the small time slot of oneself
It please signal RTS, business link setup approval signal CTS, data slot reception CRC result response；
Data transmission slots utilize letter for the data transmission between network node, time span 10ms, network node
Road random slot carries out data slot resource reservation；
The time span of one overclocking is：Tf=40*M+17*M*TG+(L*N+M)*M*Ts；
Wherein, TsFor the time span of signaling-information, TGFor time delay guard time, L is number of sectors, and N is each sector institute
The narrowband velocity of wave directional aerial quantity of installation；
Main, network is Microwave Net radio station, and multi-hop ad hoc network runing time benchmark is Microwave Net radio station time reference；
The MAC Address in the Microwave Net radio station is 0；.
Second step：Other network nodes of multi-hop ad hoc network synchronize signal capture, because adjacent antenna has reception
Region overlapping features, so carrying out signal capture using odd-numbered antenna in turn first, the capture of odd-numbered aerial signal is lost
It loses, then carries out signal capture using even-numbered antenna, repeat signal capture, until certain root antenna successfully captures synchronous letter
Number, as shown in Figure 3；Wherein the receiving time of every antenna is Tf+Ts, i.e. overclocking time plus signaling-information when
Between length, the network node for not accessing net can be no more than L*N* (Tf+Ts) in the time, at least successfully capture a neighbor node
The synchronization signal of transmission；
In view of the network node of fleet is less, network topology is also relatively stable, so broadcast signaling time slot needs
The signaling bit of carrying less (tens bit magnitudes) and the signal bandwidth of microwave signal is larger (tens MHz magnitudes), therefore
Time span needed for signaling-information is smaller, Ts=0.1 millisecond is a representative value；In propagation delay time protection, fights and form into columns
Maximum distance between middle ships is generally not too large, 75km (TG=0.25 millisecond) single-hop transmission distance protection substantially can
To meet the communication requirement of self-organizing network.
Third step：Do not access the network node X root antenna trapping of network to some networking neighboring network node Y
After the synchronization signal that root antenna is sent, network node obtains one-way synchronization, that is, when obtaining the network operation containing unidirectional transmission time delay
Between.
4th step：Realize that the network node of one-way synchronization uses the broadcast of itself according to the MAC Address of itself in overclocking
Signalling time slot sends broadcast singal, as shown in figure 4, continuing searching on the broadcast signaling time slot of other network nodes simultaneously, directly
To neighbours' link relationship is established, to ensure dual-mode antenna seamless switching of the communication link under mobile context, in Antenna Design mistake
Needed between the main lobe wave beam of adjacent narrowband beam-forming antenna in journey it is a certain proportion of overlap each other, as shown in Figure 5.
5th step：When the network node of one-way synchronization and its higher level's Time Synchronization Network node utilize respective broadcast signaling
Gap carries out ranging, carries out path transmission time delay adjustment, as shown in Figure 6；
Specially：Junior time synchronization node D2 has been properly received its higher level's time synchronization node D1 in some overclocking and has existed
On its time slot M root antenna send carrying temporal information synchronization signal, subsequent junior's time synchronization node D2 also at
Function receives higher level's time synchronization node D1 synchronization signal that nth root antenna is sent on its signal time slot；Higher level's time
Synchronization node D1 is passed according to the signal that the synchronization signal relevant peaks detection time of junior time synchronization node D2 has calculated both sides
Defeated time delay Td：
Td=(TT-Tsyn-T+(M-N)Ts)/2,
Wherein, the M root antenna that TT is higher level's time synchronization node D1 sends signal time and detects that junior's time is same
Walk the time timing cycle of the synchronous head signal of the nth root antenna of node D2, TsynFor the time span of synchronous head signal, T is super
Interval in frame structure between the time slot of higher level's time synchronization node D1 and the time slot of junior time synchronization node D2；
Higher level's time synchronization node D1 will be next super after calculating itself and the distance of junior's time synchronization node D2
Higher level time synchronization node D1, higher level's time synchronization node D1 will be given to be repaired according to distance apart from notice on the time slot of oneself frequently
The just Network Time Base of oneself；
6th step：Using the mutual discovery mechanism of neighbor node between network node and the real-time Regulation mechanism of antenna alignment, obtain
Best transmission antenna and optimum reception antenna out；
The mutual discovery mechanism process of neighbor node is as follows：
T1, M broadcast signaling time slot allocation for including with regard to a superframe by MAC Address to multi-hop ad hoc network M pre- rule
Draw node；
Network node after T2, networking is sent using L*N root antenna in turn in itself predistribution broadcast signaling time slot
The synchronous signaling signal of 360 degree of omnidirectionals covering；
After T3, network node realize one-way synchronization, by and state of the network wherein between M-1 node be defined as two kinds：
Non- neighbours' node state SNNWith neighbor node state SN, when continuous 5 superframes of neighbor node do not receive the signaling-information of other side,
Then it is converted into non-neighbor node；When non-neighbor node receives the signaling-information of other side, then neighbor node is converted to；
The L*K ° difference that T4, node 1 are sent using 2 time slot of node that an antenna monitors non-neighbor node every time
The synchronous signaling signal in direction replaces antenna on next time slot of node 2 and continues to supervise if all receiving failure
It listens, node 1 repeats reception process, until certain root antenna is successfully received the broadcast synchronization signaling that certain root antenna of node 2 is sent
Signal, i.e. completion neighbor node unidirectionally find that the node 2 of non-neighbor node is converted to the node 2 of neighbor node；Use antenna
Sequence is since odd-numbered antenna；
T5, for node 1, if unidirectionally found using the neighbor node of the complete paired node 2 of W root antenna, use W
Two adjacent antennas of root antenna carry out signal reception to 2 subsequent 2 time slots of node respectively, and node 1 is according to three days
The signal receiving quality of line obtains the best transmitting to the corresponding optimum reception antenna of the optimum reception antenna and node 1 of node 2
Antenna；
T6, node 1 obtain best transmitting antenna number information, broadcast of the node 2 at oneself on the time slot of oneself
Optimal antenna number information is obtained on time slot；
The real-time Regulation mechanism of antenna alignment, detailed process is as follows：
After U1, node 1 and 2 neighbor node of node are mutually found, 1 optimum reception antenna of node is XXX, and node 2 most preferably connects
Receipts antenna is YYY, and node 1 monitors the broadcast signaling signal of node 2, L*N root of the record antenna XXX to node 2 using antenna XXX
The reception result of antenna signaling-information, node 2 monitor the broadcast signaling signal of node 1 using antenna YYY, record YYY pairs of antenna
1 signaling-information reception result of node；The reception result is that signal when whether being properly received and be properly received receives noise
Than；
The synchronous signaling letter that U2, another antenna YYY' for being properly received node 2 for 1 antenna XXX of node continuous 2 times are sent
Number, and the signal received signal to noise ratio of antenna combination XXX, YYY of the received signal to noise ratio than currently maintaining are high, then node 1 will update most
The best transmitting antenna of the node 2 of good receiving antenna and corresponding optimum reception antenna, and section is notified on the time slot of oneself
2 best transmitting antenna more new informations of point；Node 2 is using the optimum reception antenna between same mechanism update and node 1 and most preferably
Transmitting antenna；
1 continuous 3 U3, node overclocking are unable to properly receive the broadcast signaling signal of node 2, then take turns in rear 2 overclockings
Stream is monitored using 2 adjacent antennas of antenna XXX, if signal can be properly received, is carried out antenna combination update and is led to
Know node 2；If 2 state of node is converted to non-neighbor node, re-starts neighbor node by whole reception failures, node 1
Discovery mechanism；Node 2 also carries out neighborhood maintenance using same mechanism.
7th step：Based on best transmission antenna and optimum reception antenna, realize that network node orients day using narrow-band beam
Line carries out the noiseless parallel transmission of business multichannel, as shown in fig. 7, a son frequency of superframe structure contains 4 channels, random access A
Time slot, the channel access small time slot of each time slot；Each A time slot includes 4 channel access small time slots.
8th step：WithA A time slot is to have M channel access hour in one cycle in a channel access period
Gap is averagely allocated to M default network nodes according to MAC Address is fixed；
Detailed process is：In channel access process, it is contemplated that network node all uses narrow-band beam directional aerial, therefore believes
Road access procedure transmits the mechanism of (D time slot)-ACK (A time slot) using RTS (A time slot)-CTS (A time slot)-data, according to channel
Access rules, using the A time slot mechanism of the A time slot of RTS, the A time slot of CTS, the D time slot of data transmission, ACK, i.e. business is sent
Side sends business to some purpose neighbor node on oneself predistribution channel access small time slot and transmits link setup application signaling RTS,
And signaling destination node oneself is pre-allocating feedback traffic transmission agreement signaling on channel access small time slot after receiving RTS signaling
CTS.Wherein RTS signaling will carry the attribute information of data to be transmitted business, including type of service, priority and data volume be big
It is small, and CTS signaling then carries service transmission rate and transmits the location information of data slot；Business sender is receiving purpose section
After the CTS response signaling of point, then business datum is sent on specified data slot using indicated speed based on related signaling information；
In addition in the channel access signalling interactive process between neighbor node, sender will use on the channel access small time slot of oneself
The transmitting of channel access signaling is carried out by the best transmitting antenna that recipient notifies on its broadcast signaling time slot, and in other neighbours
On the channel access time slot of node, then the signaling that other side may send is received using corresponding optimum reception antenna respectively；Such as
Shown in Fig. 8, a data transmission stream journey schematic diagram between the network node 1 of 4 nodes and network node 3 is provided；
In order to promote the performance of credit access scheme, following channel access rule is formulated：
1, it could be used on respectively predistribution channel access small time slot between the neighbor node only found mutually
Other side notifies to send signaling to other side using transmitting antenna；
2, come in the channel access small time slot of oneself predistribution it is interim, if in channel access signaling queue there are it is multiple not
With the signaling to be sent of destination address, then priority based on business to be transmitted carries out signaling queuing, then purpose MAC when ad eundem
The small signaling in address is preferential, wherein ACK response signaling grade highest, RTS with CTS signaling is taken second place and priority is identical.It considers
The signal transmission characteristics of directional aerial, multicast or broadcast data business will degenerate for multiple independent unicast services, need and purpose
Node carries out business link setup and data transmission one by one respectively；
3, after RTS signaling is sent once, if not receiving the CTS response of destination node within 3 channel access periods
Signaling then retransmits.It repeats the above process until receiving other side's response signaling or transmission times reaches set upper limit K；
4, for the signaling small time slot of other M-1 in a channel access period other network nodes, if the time slot
It is to belong in SNThe neighbor node of state, then signaling-information is carried out using the antenna of itself in the antenna combination safeguarded therewith
It receives；If it is belonging to SNNThe non-neighbor node of state, then it is in idle condition on the time slot, abandons receiving.
Channel disturbance model caused by signal broadcast compared with omnidirectional antenna is transmitted, all uses narrowband wave in network node
In the case that beam directional aerial sends and receives signals, which will there is the probability interfered with each other, in the signal sent simultaneously in network to drop significantly
It is low, to be obviously improved the space reuse degree of frequency resource, increase substantially the handling capacity of whole network.
Microwave Net channel access system based on narrow-band beam directional aerial：Including the distributed day connected by optical fiber
Linear system system and Microwave Net radio station；
The distributing antenna system includes L sector antenna, is able to achieve 360 ° of hip-based platform horizontal coverings；The antenna
Covering of the fan includes N root narrowband directional aerial, and each sector antenna is responsible for K ° of communication overlay, and L*K is greater than 360 °；Pass through cubicle switchboard
Battle array selects a narrowband directional aerial to carry out sending and receiving for signal, i.e. half-duplex from L*N root narrowband directional aerial on demand
Working mechanism, as shown in Figure 9；
The Microwave Net radio station with all mid-side nodes for being communicated.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. the Microwave Net channel access method based on narrow-band beam directional aerial, which is characterized in that include the following steps：
Main, S1, network booting is followed by multi-hop ad hoc network into superframe structure, with multi-hop ad hoc network runing time benchmark, occupies the
The broadcast signaling time slot of one sub- frequency, and the synchronization signal of multi-hop ad hoc network time reference information is sent using more antennas in turn；
S2, multi-hop ad hoc network other network nodes synchronize signal capture；
S3, do not access the network node X root antenna trapping of multi-hop ad hoc network to some networking neighboring network node y root
After the synchronization signal that antenna is sent, i.e., synchronization signal acquisition success, the network node acquisition for not accessing multi-hop ad hoc network are unidirectional same
Step；
S4, realize that the network node of one-way synchronization uses the broadcast signaling time slot of itself according to the MAC Address of itself in overclocking
Broadcast singal is sent, while being continued searching on the broadcast signaling time slot of other network nodes, until neighbours' link relationship is established,
It can be carried out data traffic transmission；
S5, the network node of one-way synchronization and its higher level's Time Synchronization Network node are surveyed using respective broadcast signaling time slot
Away from progress path transmission time delay adjustment；
The mutual discovery mechanism of neighbor node and the real-time Regulation mechanism of antenna alignment are used between S6, network node, obtain best hair
Antennas and optimum reception antenna；
S7, be based on best transmission antenna and optimum reception antenna, the channel random access A time slot of a sub- frequency of superframe structure,
The channel access small time slot of each time slot；
S8, withA A time slot is to have M channel access small time slot, according to MAC in one cycle in a channel access period
Address is fixed to be averagely allocated to M default network nodes.
2. the Microwave Net channel access method according to claim 1 based on narrow-band beam directional aerial, feature exist
In in step S1, in the multi-hop ad hoc network of the overclocking structure, an overclocking is made of M son frequency, before M indicates network opening
Preset network node quantity；The preset network node quantity typical set-up value is：2,4,8,12；
The son frequency, the time slot of son frequency different function containing three classes：Broadcast signaling time slot B S, channel random access time slot A, number
According to transmission time slot D；
The broadcast message time slot includes that L*N broadcast signaling small time slot and 1 time delay protect time slot, for multi-hop ad hoc network network
In some network node L*N root narrow-band beam directional aerial send a signaling-information in turn, the M in one of overclocking
Broadcast message time slot is averagely allocated to M default network nodes according to MAC Address is fixed；
The channel random access time slot protects time slot containing 4 small signalling time slots and corresponding 4 time delays, solid according to MAC Address
Surely 4 different network nodes are distributed to use；4 different network nodes can send business link setup Shen on the small time slot of oneself
It please signal RTS, business link setup approval signal CTS, data slot reception CRC result response；
The data transmission slots utilize letter for the data transmission between network node, time span 10ms, network node
Road random slot carries out data slot resource reservation；
The time span of one overclocking is：
Tf=40*M+17*M*TG+(L*N+M)*M*Ts；
Wherein, TsFor the time span of signaling-information, TGFor time delay guard time, L is number of sectors, and N is installed by each sector
Narrowband velocity of wave directional aerial quantity；
Main, the network is Microwave Net radio station, and the multi-hop ad hoc network runing time benchmark is Microwave Net radio station time base
It is quasi-；The MAC Address in the Microwave Net radio station is 0.
3. the Microwave Net channel access method according to claim 1 based on narrow-band beam directional aerial, feature exist
In in step S2, detailed process is：Other network nodes of multi-hop ad hoc network are first synchronized using odd-numbered antenna in turn
Signal capture, capture unsuccessfully reuse even number antenna and synchronize signal capture, recycle always, until certain root antenna successfully captures
Synchronization signal；Wherein the time that receives of every antenna is Tf+Ts, i.e. super frame tim e is long plus the time of a signaling-information
Degree；Other nodes of the multihop network include the node to have networked and the node not networked.
4. the Microwave Net channel access method according to claim 1 based on narrow-band beam directional aerial, feature exist
In in step S3, the node obtains one-way synchronization, i.e. network operation time of the acquisition containing unidirectional transmission time delay；The acquisition
The network node of one-way synchronization is the network node for not accessing network.
5. the Microwave Net channel access method according to claim 1 based on narrow-band beam directional aerial, feature exist
In in step S5, specially：Junior time synchronization node D2 has been properly received its higher level's time synchronization node in some overclocking
The synchronization signal of the D1 carrying temporal information that M root antenna is sent on its time slot, subsequent junior's time synchronization node D2
Also it is successfully received higher level's time synchronization node D1 synchronization signal that n-th antenna is sent on its signal time slot；Higher level
Time synchronization node D1 has calculated the letter of both sides according to the synchronization signal relevant peaks detection time of junior time synchronization node D2
Number propagation delay time Td：
Td=(TT-Tsyn-T+(M-N)Ts)/2,
Wherein, the M root antenna that TT is higher level's time synchronization node D1 sends signal time and detects junior's time synchronization section
The time timing cycle of the synchronous head signal of the nth root antenna of point D2, TsynFor the time span of synchronous head signal, T is superframe knot
Interval in structure between the time slot of higher level's time synchronization node D1 and the time slot of junior time synchronization node D2；
After higher level's time synchronization node D1 calculates itself and the distance of junior's time synchronization node D2, in next overclocking oneself
Time slot on by it is calculated distance notice give higher level time synchronization node D1, higher level's time synchronization node D1 is according to distance
Correct the Network Time Base of oneself.
6. the Microwave Net channel access method according to claim 1 based on narrow-band beam directional aerial, feature exist
In in step S6, the mutual discovery mechanism process of neighbor node is as follows：
T1, M broadcast signaling time slot allocation for including with regard to a superframe by MAC Address to multi-hop ad hoc network M pre-planning section
Point；
Network node after T2, networking sends 360 degree using L*N root antenna in turn in itself predistribution broadcast signaling time slot
The synchronous signaling signal of omnidirectional's covering；
After T3, network node realize one-way synchronization, by and state of the network wherein between M-1 node be defined as two kinds：It is non-neighboring
Occupy node state SNNWith neighbor node state SN, when continuous 5 superframes of neighbor node do not receive the signaling-information of other side, then fill
Change non-neighbor node into；When non-neighbor node receives the signaling-information of other side, then neighbor node is converted to；
The L*K ° different directions that T4, node 1 are sent using 2 time slot of node that an antenna monitors non-neighbor node every time
Synchronous signaling signal, if all receive failure, on next time slot of node 2 replace antenna continue to monitor,
Node 1 repeats reception process, until the broadcast synchronization signaling letter that certain root antenna that certain root antenna is successfully received node 2 is sent
Number, i.e. completion neighbor node unidirectionally finds that the node 2 of non-neighbor node is converted to the node 2 of neighbor node；Use the suitable of antenna
Sequence is since odd-numbered antenna；
T5, for node 1, if unidirectionally found using the neighbor node of the complete paired node 2 of W root antenna, use W root day
Two adjacent antennas of line carry out signal receptions to 2 subsequent 2 time slots of node respectively, and node 1 is according to three antennas
Signal receiving quality obtains the best transmitting day to the corresponding optimum reception antenna of the optimum reception antenna and node 1 of node 2
Line；
T6, node 1 obtain best transmitting antenna number information, time slot of the node 2 at oneself on the time slot of oneself
On obtain optimal antenna number information.
7. the Microwave Net channel access method according to claim 1 based on narrow-band beam directional aerial, feature exist
In in step S6, the real-time Regulation mechanism of antenna alignment, detailed process is as follows：
After U1, node 1 and 2 neighbor node of node are mutually found, 1 optimum reception antenna of node is XXX, 2 optimum reception day of node
Line is YYY, and node 1 monitors the broadcast signaling signal of node 2, L*N root antenna of the record antenna XXX to node 2 using antenna XXX
The reception result of signaling-information, node 2 monitor the broadcast signaling signal of node 1 using antenna YYY, record antenna YYY to node 1
Signaling-information reception result；The reception result is signal received signal to noise ratio when whether being properly received and be properly received；
The synchronous signaling signal that U2, another antenna YYY' for being properly received node 2 for 1 antenna XXX of node continuous 2 times are sent, and
The signal received signal to noise ratio of antenna combination XXX, YYY of the received signal to noise ratio than currently maintaining are high, then node 1 will update optimum reception
The best transmitting antenna of the node 2 of antenna and corresponding optimum reception antenna, and notify that node 2 is best on the time slot of oneself
Transmitting antenna more new information；Node 2 updates the optimum reception antenna and best transmitting day between node 1 using same mechanism
Line；
1 continuous 3 U3, node overclocking are unable to properly receive the broadcast signaling signal of node 2, then make in turn in rear 2 overclockings
It is monitored with 2 adjacent antennas of antenna XXX, if signal can be properly received, carries out antenna combination update and notify to save
Point 2；If 2 state of node is converted to non-neighbor node by whole reception failures, node 1, neighbor node discovery is re-started
Mechanism；Node 2 also carries out neighborhood maintenance using same mechanism.
8. the Microwave Net channel access method according to claim 1 based on narrow-band beam antenna, which is characterized in that step
In rapid S7, the channel of one sub- frequency has more than one, and the channel of each A time slot has more than one.
9. the Microwave Net channel access method according to claim 1 based on narrow-band beam antenna, special this is, walks
In rapid S8, detailed process is：In channel access process, according to channel access rule, using the A time slot of RTS, CTS A time slot,
The A time slot mechanism of D time slot, ACK that data are transmitted, i.e. business sender are on oneself predistribution channel access small time slot to some
Purpose neighbor node sends business and transmits link setup application signaling RTS, and signaling destination node receive after RTS signaling oneself pre- point
Allocating channel accesses feedback traffic transmission on small time slot and agrees to signaling CTS；Wherein RTS signaling will carry the category of data to be transmitted business
Property information, including type of service, priority and data volume size, and CTS signaling then carries service transmission rate and transmission data
The location information of time slot；Business sender is then used based on related signaling information after receiving the CTS response signaling of destination node
Indicated speed sends business datum on specified data slot；In addition the channel access signalling interactive process between neighbor node
In, sender will use the best hair notified on its broadcast signaling time slot by recipient on the channel access small time slot of oneself
It penetrates antenna and carries out the transmitting of channel access signaling, and on the channel access time slot of other neighbor nodes, then respectively using corresponding
Optimum reception antenna receives the signaling that other side may send；
The channel access rule has：
Between the neighbor node only found mutually other side institute could be used on respectively predistribution channel access small time slot
Notice sends signaling to other side using transmitting antenna；
Come in the channel access small time slot of oneself predistribution temporarily, if there are multiple and different purposes in channel access signaling queue
The signaling to be sent of address, then priority based on business to be transmitted carries out signaling queuing, and then target MAC (Media Access Control) address is small when ad eundem
Signaling it is preferential, wherein ACK response signaling grade highest, RTS with CTS signaling is taken second place and priority is identical；In view of orienting day
The signal transmission characteristics of line, multicast or broadcast data business will degenerate for multiple independent unicast services, need and destination node point
Do not carry out business link setup and data transmission one by one；
After RTS signaling is sent once, if not receiving the CTS response signaling of destination node within 3 channel access periods,
It retransmits；It repeats the above process until receiving other side's response signaling or transmission times reaches set upper limit K；
For the signaling small time slot of other M-1 other network nodes in a channel access period, if the time slot is to belong to
In SNThe neighbor node of state, then signaling-information reception is carried out using the antenna of itself in the antenna combination safeguarded therewith；
If it is belonging to SNNThe non-neighbor node of state, then it is in idle condition on the time slot, abandons receiving.
10. the Microwave Net channel access system based on narrow-band beam directional aerial, which is characterized in that including being connected by optical fiber
Distributing antenna system and Microwave Net radio station；
The distributing antenna system includes L sector antenna, is able to achieve 360 ° of hip-based platform horizontal coverings；The sector antenna
Comprising N root narrowband directional aerial, each sector antenna is responsible for K ° of communication overlay, and L*K is greater than 360 °；It is pressed by switch matrix
A narrowband directional aerial need to be selected to carry out sending and receiving for signal from L*N root narrowband directional aerial, i.e. half-duplex works
Mechanism；
The Microwave Net radio station with all mid-side nodes for being communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507165.6A CN108934020B (en) | 2018-05-24 | 2018-05-24 | Microwave network channel access method and system based on narrowband wave beam directional antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810507165.6A CN108934020B (en) | 2018-05-24 | 2018-05-24 | Microwave network channel access method and system based on narrowband wave beam directional antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108934020A true CN108934020A (en) | 2018-12-04 |
| CN108934020B CN108934020B (en) | 2021-10-08 |
Family
ID=64449383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810507165.6A Active CN108934020B (en) | 2018-05-24 | 2018-05-24 | Microwave network channel access method and system based on narrowband wave beam directional antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108934020B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110463264A (en) * | 2019-06-17 | 2019-11-15 | 北京小米移动软件有限公司 | Random access indicating means, device and storage medium |
| CN111162832A (en) * | 2019-12-25 | 2020-05-15 | 天津海润海上技术股份有限公司 | Method for realizing marine microwave directional communication based on Beidou system |
| CN111371483A (en) * | 2020-03-09 | 2020-07-03 | 大唐联诚信息系统技术有限公司 | Beam scheduling method, device and system |
| CN111885725A (en) * | 2020-07-21 | 2020-11-03 | 西安交通大学 | Remote TDMA mobile self-organizing network node synchronous access method and equipment |
| CN113133013A (en) * | 2021-03-16 | 2021-07-16 | 中国电子科技集团公司第五十四研究所 | Method, equipment and system for directional ad hoc network |
| CN113207168A (en) * | 2021-07-06 | 2021-08-03 | 军事科学院系统工程研究院网络信息研究所 | Agile access method and system based on directional beam forming |
| CN113473481A (en) * | 2021-06-11 | 2021-10-01 | 西安空间无线电技术研究所 | Efficient communication networking access system for resource-limited scene |
| CN114125870A (en) * | 2022-01-24 | 2022-03-01 | 北京理工大学 | Directional antenna neighbor discovery method and device based on multiple receivers |
| CN115086884A (en) * | 2022-04-22 | 2022-09-20 | 三维通信股份有限公司 | Narrow-wave multicast directional transmission method, system and readable storage medium |
| CN115102577A (en) * | 2022-07-01 | 2022-09-23 | 西安宇飞电子技术有限公司 | Single carrier time-frequency domain anti-interference method, system and storage medium |
| CN115622650A (en) * | 2022-09-08 | 2023-01-17 | 中国人民解放军国防科技大学 | Method and device for time synchronization and route maintenance of narrowband ad hoc network |
| WO2023109919A1 (en) * | 2021-12-17 | 2023-06-22 | 锐捷网络股份有限公司 | Packet sending method and apparatus, intelligent terminal, and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070045424A1 (en) * | 2005-08-26 | 2007-03-01 | Ynjiun Wang | Data collection device having dynamic access to multiple wireless networks |
| US20070297366A1 (en) * | 2006-01-05 | 2007-12-27 | Robert Osann | Synchronized wireless mesh network |
| US7420944B2 (en) * | 2005-10-14 | 2008-09-02 | The Boeing Company | Method of forming directional wireless networks using in-band channels |
| CN101517980A (en) * | 2006-09-29 | 2009-08-26 | 英特尔公司 | Architecture, protocols and frame formats for wireless multi-hop relay networks |
| CN102547907A (en) * | 2012-01-16 | 2012-07-04 | 上海金网通信技术发展有限公司 | Joint node network equipment used for mobile broadband multi-hop Ad Hoc network |
| CN105307261A (en) * | 2015-11-11 | 2016-02-03 | 中国电子科技集团公司第三十研究所 | Self-synchronization method for oriented Adhoc network |
| CN105493583A (en) * | 2013-08-27 | 2016-04-13 | 高通股份有限公司 | High efficiency wireless (HEW) access point (AP) coordination protocol |
-
2018
- 2018-05-24 CN CN201810507165.6A patent/CN108934020B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070045424A1 (en) * | 2005-08-26 | 2007-03-01 | Ynjiun Wang | Data collection device having dynamic access to multiple wireless networks |
| US7420944B2 (en) * | 2005-10-14 | 2008-09-02 | The Boeing Company | Method of forming directional wireless networks using in-band channels |
| US20070297366A1 (en) * | 2006-01-05 | 2007-12-27 | Robert Osann | Synchronized wireless mesh network |
| CN101517980A (en) * | 2006-09-29 | 2009-08-26 | 英特尔公司 | Architecture, protocols and frame formats for wireless multi-hop relay networks |
| CN102547907A (en) * | 2012-01-16 | 2012-07-04 | 上海金网通信技术发展有限公司 | Joint node network equipment used for mobile broadband multi-hop Ad Hoc network |
| CN105493583A (en) * | 2013-08-27 | 2016-04-13 | 高通股份有限公司 | High efficiency wireless (HEW) access point (AP) coordination protocol |
| CN105307261A (en) * | 2015-11-11 | 2016-02-03 | 中国电子科技集团公司第三十研究所 | Self-synchronization method for oriented Adhoc network |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110463264B (en) * | 2019-06-17 | 2021-10-08 | 北京小米移动软件有限公司 | Random access indication method, device and storage medium |
| CN110463264A (en) * | 2019-06-17 | 2019-11-15 | 北京小米移动软件有限公司 | Random access indicating means, device and storage medium |
| CN111162832A (en) * | 2019-12-25 | 2020-05-15 | 天津海润海上技术股份有限公司 | Method for realizing marine microwave directional communication based on Beidou system |
| CN111371483A (en) * | 2020-03-09 | 2020-07-03 | 大唐联诚信息系统技术有限公司 | Beam scheduling method, device and system |
| CN111371483B (en) * | 2020-03-09 | 2023-08-18 | 大唐联诚信息系统技术有限公司 | Beam scheduling method, device and system |
| CN111885725B (en) * | 2020-07-21 | 2022-07-12 | 西安交通大学 | Remote TDMA mobile self-organizing network node synchronous access method and equipment |
| CN111885725A (en) * | 2020-07-21 | 2020-11-03 | 西安交通大学 | Remote TDMA mobile self-organizing network node synchronous access method and equipment |
| CN113133013A (en) * | 2021-03-16 | 2021-07-16 | 中国电子科技集团公司第五十四研究所 | Method, equipment and system for directional ad hoc network |
| WO2022194139A1 (en) * | 2021-03-16 | 2022-09-22 | 中国电子科技集团公司第五十四研究所 | Directional ad hoc networking method, device and system |
| CN113473481A (en) * | 2021-06-11 | 2021-10-01 | 西安空间无线电技术研究所 | Efficient communication networking access system for resource-limited scene |
| CN113473481B (en) * | 2021-06-11 | 2022-10-21 | 西安空间无线电技术研究所 | Efficient communication networking access system for resource-limited scene |
| CN113207168A (en) * | 2021-07-06 | 2021-08-03 | 军事科学院系统工程研究院网络信息研究所 | Agile access method and system based on directional beam forming |
| WO2023109919A1 (en) * | 2021-12-17 | 2023-06-22 | 锐捷网络股份有限公司 | Packet sending method and apparatus, intelligent terminal, and storage medium |
| CN114125870A (en) * | 2022-01-24 | 2022-03-01 | 北京理工大学 | Directional antenna neighbor discovery method and device based on multiple receivers |
| CN115086884A (en) * | 2022-04-22 | 2022-09-20 | 三维通信股份有限公司 | Narrow-wave multicast directional transmission method, system and readable storage medium |
| CN115086884B (en) * | 2022-04-22 | 2023-10-17 | 三维通信股份有限公司 | Narrow-wave multicast directional transmission method, system and readable storage medium |
| CN115102577B (en) * | 2022-07-01 | 2023-06-16 | 西安宇飞电子技术有限公司 | Single carrier time-frequency domain anti-interference method, system and storage medium |
| CN115102577A (en) * | 2022-07-01 | 2022-09-23 | 西安宇飞电子技术有限公司 | Single carrier time-frequency domain anti-interference method, system and storage medium |
| CN115622650A (en) * | 2022-09-08 | 2023-01-17 | 中国人民解放军国防科技大学 | Method and device for time synchronization and route maintenance of narrowband ad hoc network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108934020B (en) | 2021-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108934020A (en) | Microwave Net channel access method and system based on narrow-band beam directional aerial | |
| CN109348537B (en) | Multi-beam self-organizing network channel access control method | |
| CN104796918B (en) | The method of wireless communication network | |
| CN110493791A (en) | Empty Incorporate network architecture and design method based near space platform | |
| EP3837891B1 (en) | Methods, wireless communications networks and infrastructure equipment | |
| CN105636148B (en) | A kind of wireless multi-hop network data transmission method | |
| CN110225565B (en) | Mobile networking method based on multi-beam directional antenna | |
| TW201743580A (en) | Methods and appratus to support mobility | |
| CN107979872A (en) | Multi-frequency time division multiple access access system and method based on directional aerial | |
| CN103916929A (en) | Neighbor finding method for directional Ad Hoc network | |
| KR20070029612A (en) | Communication protocol for a wireless mesh architecture | |
| CN103002501A (en) | Mobile relay implementing method and mobile relay system | |
| TW201351910A (en) | Virtual sectorization using an active antenna array | |
| CN109788542A (en) | Ad hoc network channel access method, device, computer equipment and readable storage medium storing program for executing | |
| KR20180062156A (en) | Method and apparatus for applying millimeter wave-based mobile communication technology to unmanned aerial vehicle, operation method of unmanned aerial vehicle using the same, and communication method using the same | |
| CN101656996A (en) | Ships fast self-networking method based on GPS information | |
| CN208890803U (en) | A kind of unmanned plane region group network system | |
| KR101213534B1 (en) | Remote control system and method for underwater robot | |
| Dinh et al. | Flying ad-hoc network for emergency based on IEEE 802.11 p multichannel MAC protocol | |
| WO2017084485A1 (en) | System broadcast message transmission method and apparatus | |
| CN102186260A (en) | Peacetime/disaster compatible wireless communication network and communication method thereof | |
| CN105191401A (en) | Method for determining mobility of user equipment with dual connections in communications system | |
| CN109818667A (en) | It is a kind of based on star upper signal channel exchange remote equipment enter network control method | |
| Pandi et al. | A survey on 5G mobile technology | |
| Li et al. | A local reaction anti-jamming scheme for UAV swarms |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |