CN109982428A - Construct method, terminal, the network equipment and the synchronous network system of synchronizing network - Google Patents
Construct method, terminal, the network equipment and the synchronous network system of synchronizing network Download PDFInfo
- Publication number
- CN109982428A CN109982428A CN201910262147.0A CN201910262147A CN109982428A CN 109982428 A CN109982428 A CN 109982428A CN 201910262147 A CN201910262147 A CN 201910262147A CN 109982428 A CN109982428 A CN 109982428A
- Authority
- CN
- China
- Prior art keywords
- added
- synchronizing network
- network
- slave node
- node
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
- H04W84/20—Master-slave selection or change arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The method of building synchronizing network provided by the invention, terminal, the network equipment and synchronous network system, slave node by having been added to synchronizing network sends synchronization signal to the slave node of synchronizing network to be added, so that synchronizing network to be added can detecte slave node to synchronization signal, and access signal is sent to from node, after receiving the propagation delay time returned after node response access signal, frame boundaries are adjusted according to propagation delay time, establish and have been added to the bi-directional synchronization of the slave node of synchronizing network, to be added in synchronizing network by the slave node for having been added to synchronizing network, solve the problems, such as that synchronizing network cannot be added in the slave node of synchronizing network to be added.And be not that synchronizing network only could be added by receiving the synchronization signal of host node transmission, the synchronizing network of building is not the Star Network centered on host node, and can be randomly topologically structured synchronizing network.
Description
Technical field
The present invention relates to network technique field more particularly to it is a kind of construct the method for synchronizing network, terminal, the network equipment and
Synchronous network system.
Background technique
Wireless MESH network is divided into asynchronous network and synchronizing network, in synchronizing network, it is desirable that the frame boundaries on node are same
Step.When network density and it is larger when, synchronizing network has good network performance in practical applications.
Under the aided case for having the external synchronization sources such as GPS/ Beidou, the whole network, which synchronizes, to be relatively easy to realize, and synchronizes essence
It spends also relatively high.But under many scenes, such as underground, jungle etc., satellite-signal does not cover or signal quality is bad,
The net synchronization capability of system will be seriously affected.In this case, it needs to synchronize by sending synchronization signal between node.
In the prior art, the method for constructing synchronizing network by sending synchronization signal between node are as follows: 1 node is as same
Source node, that is, host node is walked, remaining node is used as from node.Host node sends synchronizing information, so that receiving host node hair from node
The synchronizing information sent, and be added in MESH synchronizing network according to the synchronization signal received, and then complete the building of synchronizing network.
The synchronizing network framework of building is as shown in Figure 1.
But when constructing synchronizing network in the prior art, due to the synchronization that can only be sent from node by receiving host node
Signal, and MESH synchronizing network is added according to synchronization signal, therefore the synchronizing network constructed is star-like centered on host node
There is self-organization of network characteristic difference in network.And when the distance between the node of network to be added and host node farther out
When, the node of network to be added cannot receive the synchronization signal of host node transmission, and then MESH synchronizing network cannot be added.
Summary of the invention
In view of this, constructing the method for synchronizing network, terminal, the network equipment and same the purpose of the present invention is to provide a kind of
Network system is walked, to solve to be only capable of the synchronizing network of building this topological structure of Star Network in the prior art, leads to network certainly
The node of tissue characteristics difference and synchronizing network to be added cannot be added when that cannot receive the synchronization signal of host node transmission
The problem of MESH synchronizing network.
Technical solution is as follows:
The present invention provides a kind of method for constructing synchronizing network, described applied on the slave node of synchronizing network to be added
Method includes:
Synchronization signal is detected, and obtains the frame boundaries of the synchronization signal；Wherein synchronization signal include at least one
The synchronization signal that the slave node of synchronizing network is sent is added；
Access signal is sent to the slave node for having been added to synchronizing network described in the synchronization signal is sent；
Determine whether that receiving the slave node for having been added to synchronizing network responds the biography returned after the access signal
Defeated time delay；
If it is determined that receive the propagation delay time, then the frame boundaries are adjusted according to the propagation delay time, establish with it is described
Have been added to the bi-directional synchronization of the slave node of synchronizing network.
It is preferably, described to send access signal to the slave node for having been added to synchronizing network for sending the synchronization signal,
Include:
The synchronization signal is parsed, obtains having been added to the corresponding running time-frequency resource of the slave node of synchronizing network with described；
On the running time-frequency resource, the slave node that Xiang Suoshu has been added to synchronizing network sends access signal.
Preferably, described to determine whether that receiving the slave node for having been added to synchronizing network responds the access signal
The propagation delay time returned afterwards includes:
Lasting listening broadcast signal, whether detection is sent described have been added to together on the running time-frequency resource for accessing signal
The propagation delay time that the slave node of step network issues.
Preferably, the detection synchronization signal, and the frame boundaries for obtaining the synchronization signal include:
Detect the synchronization signal that host node is sent；
If the synchronization signal of host node transmission is not detected, the slave node that detection has been added to synchronizing network sends same
Walk signal；
If detecting the synchronization signal that the slave node for having been added to synchronizing network is sent, had been added to described in acquisition
The frame boundaries for the synchronization signal that the slave node of synchronizing network is sent.
Preferably, if the synchronization signal for detecting the slave node for having been added to synchronizing network and sending, obtains
The frame boundaries of synchronization signal that the slave node for having been added to synchronizing network is sent include:
If the synchronization signal that the slave node for having been added to synchronizing network detected is sent be it is multiple, compare detection
The peak value of the multiple synchronization signals arrived obtains the highest synchronization signal of peak value；
Obtain the frame boundaries of the highest synchronization signal of the peak value.
Preferably, described that the frame boundaries are adjusted according to the propagation delay time, it establishes and has been added to synchronizing network with described
Slave node bi-directional synchronization after, further includes:
Had been added to described in reception synchronizing network slave node forwarding host node be the synchronizing network to be added from
The TTI resource of node distribution, to be successfully joined the synchronizing network；Wherein, the slave node of the synchronizing network to be added becomes
The new slave node for having been added to synchronizing network.
The present invention also provides a kind of methods for constructing synchronizing network, are applied on host node, comprising:
Send synchronization signal；
Determine whether to receive access signal, wherein the access signal is that the slave node of synchronizing network to be added is being examined
It measures and sends after the synchronization signal；
If it is determined that being not received by access signal, it is determined whether receive the slave node transmission for having been added to synchronizing network
Nodal information, the nodal information be synchronizing network to be added slave node nodal information；
The nodal information that the slave node of synchronizing network is sent is had been added to if it is determined that receiving, then is the synchronization to be added
The slave node of network distributes TTI resource；
The TTI resource is sent to the slave node for having been added to synchronizing network, to have been added to together by described
The TTI resource is sent to the slave node of the synchronizing network to be added by the slave node of step network.
Preferably, however, it is determined that receive access signal, then propagation delay time is calculated according to the access signal；
The propagation delay time is sent to the slave node of the synchronizing network to be added, so that the synchronizing network to be added
Slave node frame boundaries are adjusted according to the propagation delay time after establish and the bi-directional synchronization of the host node.
The present invention also provides a kind of terminals, comprising: first memory and first processor；
Wherein, the first memory is used to store the program code of the method for building synchronizing network；
The first processor is for calling the said program code stored in the first memory, to realize institute as above
The method for the building synchronizing network stated.
The present invention also provides a kind of network equipments, comprising: second memory and second processor；
Wherein, the second memory is used to store the program code of the method for building synchronizing network；
The second processor is for calling the said program code stored in the second memory, to realize institute as above
The method for the building synchronizing network stated.
The present invention also provides a kind of synchronous network systems, comprising: at least one terminal as described above and one are as above
The network equipment.
Compared with prior art, above-mentioned technical proposal provided by the invention has the advantages that
From above-mentioned technical proposal it is found that the method for building synchronizing network provided herein, terminal, the network equipment and same
Network system is walked, the slave node by having been added to synchronizing network sends synchronization signal to the slave node of synchronizing network to be added,
So that synchronizing network to be added can detecte slave node to synchronization signal, and connect to the slave node transmission for sending the synchronization signal
Enter signal, after receiving the slave node for having been added to synchronizing network and responding the propagation delay time returned after the access signal, root
Frame boundaries are adjusted according to propagation delay time, the bi-directional synchronization of the slave node of synchronizing network are established and have been added to, thus by having added
The slave node for entering synchronizing network is added in synchronizing network, prevent synchronizing network to be added slave node from receiving main section
It puts the synchronization signal sent and can be added to by the slave node for having been added to synchronizing network in the case where synchronizing network is added
In synchronizing network, solve the problems, such as that synchronizing network cannot be added in the slave node of synchronizing network to be added in the prior art.And by
Synchronizing network is added in the slave node multi-hop that the slave node to be added for networking synchronous network can have been added to synchronizing network by other,
And be not that synchronizing network only could be added by receiving the synchronization signal of host node transmission, therefore, the synchronization net of building
Network is not the Star Network centered on host node, but can construct randomly topologically structured synchronizing network, is solved existing
There is the problem of the synchronizing network Self-organization difference constructed in technology.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the synchronizing network framework constructed in the prior art；
Fig. 2 is a kind of flow chart of method for constructing synchronizing network provided in an embodiment of the present invention；
Fig. 3 a-3c is the process that the bi-directional synchronization of slave node and host node of network to be added is realized in the embodiment of the present invention
Schematic diagram；
Fig. 4 is the signal timing diagram of building synchronizing network provided in an embodiment of the present invention；
Fig. 5 is the flow chart of the method for another building synchronizing network provided in an embodiment of the present invention；
Fig. 6 is a kind of overall flow figure of method for constructing synchronizing network provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of terminal provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram of network equipment provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Present embodiment discloses a kind of methods for constructing synchronizing network, are applied in wireless Mesh netword, to construct synchronization
Mesh network.It include host node and from node in wireless Mesh netword, wherein be divided into from node according to the state being presently in
The slave node of network where the slave node and host node to be added of network where having been added to host node.Disclosed in the present embodiment
The method for constructing synchronizing network is applied on the slave node of network to be added, it should be noted that when the slave section of network to be added
After network is added in the method that point constructs synchronizing network according to disclosed in the present embodiment, the slave node of this network to be added is translated into
The new slave node for having been added to host node place network.
Referring to fig. 2, the embodiment the following steps are included:
S101, detection synchronization signal, and obtain the frame boundaries of the synchronization signal；Wherein synchronization signal includes at least one
Have been added to the synchronization signal that the slave node of synchronizing network is sent；
In synchronous MESH network, it is desirable that the frame synchronization in MESH network on all nodes.In a kind of realization, MESH
It needs to synchronize by sending synchronization signal between the node of network.
The slave node that at least one in the present embodiment has been added to synchronizing network can be sent to the slave node of network to be added
Synchronizing information guarantees in synchronizing network on each node so that the slave node of network to be added can be added in synchronizing network
Frame synchronization.
The slave nodal test synchronization signal of synchronizing network to be added, and after the detection of the synch signal, obtain the synchronization
The frame boundaries of signal.
Wherein, there may be multiple slave nodes for having been added to synchronizing network in synchronizing network, and each have been added to same
The slave node of step network all sends synchronization signal, therefore when the slave nodal test synchronization signal of synchronizing network to be added, exists same
When the case where detecting multiple synchronization signals, each synchronization signal is to have been added to synchronization by different in this multiple synchronization signal
What the slave node of network was sent.
In the case where the slave node of synchronizing network to be added is detected simultaneously by multiple synchronization signals, a kind of implementation is
The peak value for comparing the multiple synchronization signals detected obtains the highest synchronization signal of peak value, and it is highest same to obtain the peak value
Walk the frame boundaries of signal.And ignore other synchronization signals in addition to the highest synchronization signal of peak value detected, most by peak value
The synchronization signal that high synchronization signal is sent as the slave node for having been added to synchronizing network detected.
S102, access signal is sent to the slave node for having been added to network for sending the synchronization signal.
After from nodal test to synchronization signal of synchronizing network to be added, the synchronization signal that resolved detection arrives, obtain with
Through the corresponding running time-frequency resource of slave node that synchronizing network is added；On the running time-frequency resource, synchronous net is had been added to corresponding
The slave node of network sends access signal.
Wherein, it has been added in the synchronization signal of the slave node transmission of synchronizing network to carry and is different from other from node
Mark, therefore the slave node of synchronizing network to be added is in the synchronization signal for detecting that the slave node for having been added to synchronizing network is sent
Afterwards, the available mark carried into synchronization signal, the corresponding unique access signal sequence of a mark, synchronous net to be added
The slave node of network to have been added to synchronizing network slave node send access signal when, according to have been added to synchronizing network
From the corresponding access signal sequence of the mark of node, access signal is sent, so that each having been added to the slave node of synchronizing network
The access signal received is different.
There may be the slave nodes of multiple synchronizing networks to be added to have been added to synchronization to same simultaneously in the present embodiment
The slave node of network sends the case where access signal, and in such cases, a kind of implementation is to collide to solve using LTE access interference
Certainly mechanism solves above-mentioned this case, and when collision once at most detects what the slave node an of synchronizing network to be added was sent
Access signal.
S103, determine whether to return after receiving the slave node response access signal for having been added to synchronizing network
Propagation delay time；
If it is determined that receiving the propagation delay time, S104 is thened follow the steps；
Otherwise, terminate process；
The slave node of synchronizing network to be added is sent out to the slave node for having been added to synchronizing network corresponding with synchronization signal
It send after accessing signal, continues listening broadcast signal, detect described in whether having on the running time-frequency resource for sending the access signal
The propagation delay time that the slave node of synchronizing network issues is added.It is not detected always within a preset time and has been added to synchronizing network
The propagation delay time issued from node indicates failure, terminates process, and it is always etc. not to be detected have been added to synchronizing network from
The propagation delay time that node issues.Wherein, preset time can be reasonably arranged according to the actual situation.
Have been added to synchronizing network slave node receive synchronizing network to be added slave node send access signal after,
On the basis of its local frame boundaries, according to the access signal that the slave node of the synchronizing network to be added detected is sent, meter
Calculation obtains propagation delay time, and propagation delay time is returned to the slave node of synchronizing network to be added.For example, to have been added to synchronous net
On the basis of the slave node synchronization signal local frame boundaries of network, the access signal that the slave node of synchronizing network to be added is sent is detected
Delay be 2 times of T1, then the propagation delay time being calculated be T1.
S104, the frame boundaries are adjusted according to the propagation delay time, established and the slave section for having been added to synchronizing network
The bi-directional synchronization of point；
The slave nodal test of synchronizing network to be added receives propagation delay time, then is adjusted according to propagation delay time in local acquisition
The frame boundaries arrived, to realize and have been added to the bi-directional synchronization of the slave node of synchronizing network.Wherein, synchronizing network is had been added to
From node by broadcast mode to the slave node of synchronizing network to be added send propagation delay time when, can also by broadcast mode to
The slave node of synchronizing network to be added sends System Frame Number (SystemFrame Number, SFN), synchronizing network to be added from
After nodal test to SFN, oneself local SFN is updated, is realized synchronous with synchronizing network.
Based on implementation above, the slave node by having been added to synchronizing network is sent to the slave node of synchronizing network to be added
Synchronization signal so that synchronizing network to be added can detecte slave node to synchronization signal, and to send the synchronization signal from
Node sends access signal, responds the transmission returned after the access signal receiving the slave node for having been added to synchronizing network
Shi Yanhou adjusts frame boundaries according to propagation delay time, the bi-directional synchronization of the slave node of synchronizing network is established and have been added to, to borrow
Help the slave node for having been added to synchronizing network to be added in synchronizing network, prevent synchronizing network to be added slave node from connecing
It can be by the slave section for having been added to synchronizing network in the case where receiving the synchronization signal of host node transmission and synchronizing network being added
Point is added in synchronizing network, and asking for synchronizing network cannot be added in the slave node for solving synchronizing network to be added in the prior art
Topic.And since the slave node multi-hop that the slave node to be added for networking synchronous network can have been added to synchronizing network by other is added
Synchronizing network, and be not that synchronizing network only could be added by receiving the synchronization signal of host node transmission, therefore, building
Synchronizing network be not Star Network centered on host node, but randomly topologically structured synchronizing network can be constructed,
Solve the problems, such as that the synchronizing network Self-organization constructed in the prior art is poor.
In another implementation, in synchronizing network as the host node of synchronisation source and have been added to the synchronizing network from
Node sends synchronization signal according to different time slots respectively.The synchronous signal sequence net synchronous with this is had been added to that host node is sent
The synchronous signal sequence that the slave node of network is sent is different, but the synchronous letter that the slave node for each having been added to synchronizing network is sent
Number sequence is identical, in order to distinguish the synchronization signal that the different slave nodes for having been added to synchronizing network is sent, has been added to synchronization
It is carried in the synchronization signal that the slave node of network is sent and is different from other marks from node.
Correspondingly, in step S101 synchronizing network to be added slave nodal test to synchronization signal, and obtain synchronous letter
Number frame boundaries implementation are as follows:
The slave node of synchronizing network to be added first detects the synchronization signal of host node transmission；If detecting what host node was sent
Synchronization signal then obtains the frame boundaries of the synchronization signal of host node transmission, and sends access signal to host node, so that host node
After receiving access signal, propagation delay time is returned to, when the slave node of synchronizing network to be added receives the transmission of host node transmission
It delays, frame boundaries is adjusted according to propagation delay time, be referring to shown in Fig. 3 a, 3b and 3c with the bi-directional synchronization of host node to realize
The slave node of synchronizing network to be added is realized and the process of the bi-directional synchronization of host node in the present embodiment, wherein Source Node
For host node, Node1 and Node2 are respectively the slave node of synchronizing network to be added.
If the synchronization signal of host node transmission is not detected, the slave node that detection has been added to synchronizing network sends same
Signal is walked, after detecting the synchronization signal that the slave node for having been added to synchronizing network is sent, obtains the frame boundaries of synchronization signal.
In another implementation, after step S104 further include:
The host node forwarded described in S105, reception from node is that the slave node of the synchronizing network to be added distributes
TTI resource, to be successfully joined the synchronizing network；Wherein, the slave node of the synchronizing network to be added becomes new and has added
Enter the slave node of synchronizing network.
The slave node of synchronizing network to be added is established and is had been added to after the bi-directional synchronization of slave node of synchronizing network,
The nodal information of the slave node of the synchronizing network to be added is transmitted to synchronizing network by the slave node for having been added to synchronizing network
In host node so that host node be the synchronizing network to be added slave node distribute TTI resource, and by the TTI of distribution provide
Source returns to the slave node for having been added to synchronizing network, have been added to the slave node of synchronizing network by TTI resource forwarding to institute
The slave node of synchronizing network to be added is stated, so that the slave node of synchronizing network to be added is successfully joined the synchronizing network.Just
It is that synchronizing network has been successfully joined due to the slave node of synchronizing network to be added, the slave node of synchronizing network to be added becomes
The new slave node for having been added to synchronizing network, can execute the slave node that synchronizing network is had been added to disclosed in above-mentioned steps
Operation.
It should be noted that having been added to the slave node of synchronizing network in the present embodiment for the synchronizing network to be added
When the host node being transmitted to from the nodal information of node in synchronizing network, it may be necessary to could be by synchronous net to be added after multi-hop
The nodal information of the slave node of network is sent to host node.
It is understood that in the synchronization signal of synchronizing network to be added sent slave nodal test to host node, and build
After having found the bi-directional synchronization with host node, also include the steps that distributing TTI resource for the slave node of synchronizing network to be added.Tool
Body are as follows: host node distributes TTI resource directly according to the nodal information of the slave node of the synchronizing network to be added got for it,
And directly by broadcast mode to the slave node of synchronizing network to be added distribute TTI resource so that synchronizing network to be added from
Node can send data by any neighbor node into synchronizing network in corresponding TTI resource after receiving TTI resource.
It is shown in Figure 4 based on implementation above, it is the signal timing diagram of the disclosed building synchronizing network of the present embodiment.
Present embodiment discloses the methods of another building synchronizing network, are applied in wireless Mesh netword, same to construct
Walk Mesh network.Wherein, in wireless Mesh netword include host node and from node, wherein from node according to being presently in
The slave node of network where state is divided into the slave node and host node to be added for having been added to host node place network.This implementation
The method of the disclosed building synchronizing network of example is applied on host node, referring to Fig. 5, the embodiment the following steps are included:
S201, synchronization signal is sent；
In the present embodiment, not only host node sends synchronization signal, but also has been added to host node place synchronizing network
Synchronization signal is also sent from node.Wherein, the synchronous signal sequence that host node is sent and the slave node for having been added to synchronizing network
The synchronous signal sequence of transmission is different.
S202, determine whether to receive access signal；Wherein, the access signal is that the slave node of network to be added is being examined
It measures and sends after the synchronization signal.
If it is determined that being not received by access signal, S203 is thened follow the steps.
After host node has sent synchronization signal, by traversal running time-frequency resource to detect access signal；Wherein, running time-frequency resource is
The running time-frequency resource of synchronizing network is added in the slave node for synchronizing network to be added of host node setting.Wherein, access signal is
The access signal that the slave node of synchronizing network to be added is sent after detecting the synchronization signal that host node is sent.
If it is determined that being not received by the access of synchronizing network to be added sent after from nodal test to the synchronization signal
Signal then illustrates the distance between slave node and host node of synchronizing network to be added farther out, and host node is caused to send synchronous letter
After number, the slave node of synchronizing network to be added can not directly detect the synchronization signal, and then cannot be sent according to host node
Synchronizing network is added in synchronization signal.
In such cases, the slave node of synchronizing network to be added, which passes through, detects the same of the slave node for having been added to synchronizing network
Signal is walked, is established synchronous with the slave node that has been added to synchronizing network.Synchronizing network to be added slave node establish with
After synchronizing between the slave node through synchronizing network is added, the slave node of the synchronizing network to be added becomes one in synchronizing network
It is a from node, in order to distinguish the slave node of the new addition, host node needs to distribute TTI resource from node, so that each from section
The transmission time gap of point is different.
The slave node for being embodied as newly being added synchronizing network by executing step S203-S205 distributes TTI resource.
If detection receives the access signal of synchronizing network to be added sent after from nodal test to the synchronization signal,
Network is added in the synchronization signal for then illustrating that the slave node of synchronizing network to be added can be sent according to host node, and then constructs and synchronize
Network.In such cases, the slave node of synchronizing network to be added directly establishes bi-directional synchronization with host node.In the present embodiment, lead to
It crosses and executes step S206-207 and realize bi-directional synchronization between the slave node of synchronizing network to be added and host node.
S203, determine whether to receive the nodal information of the slave node for having been added to synchronizing network transmission, the node letter
Breath is the nodal information of the slave node of synchronizing network to be added；
The nodal information that the slave node of synchronizing network is sent is had been added to if it is determined that receiving, thens follow the steps S204；
Otherwise, terminate process；
While sending synchronization signal by host node in this present embodiment, the slave node for having been added to synchronizing network is also sent
Synchronization signal, when the slave node of synchronizing network to be added cannot detect the synchronization signal that host node is sent, synchronization to be added
The slave node of network, which will test, has been added to the synchronization signal that the slave node of synchronizing network is sent.
When the synchronization signal of synchronizing network to be added sent slave nodal test to the slave node for having been added to synchronizing network
Afterwards, the frame boundaries of synchronization signal are obtained, and are sent according to the synchronization signal to the slave node for having been added to synchronizing network
Signal is accessed, and is received and is had been added to the slave node of synchronizing network and respond the propagation delay time that returns after the access signal, root
The frame boundaries are adjusted according to the propagation delay time, establish the bi-directional synchronization with the slave node for having been added to synchronizing network, this
When have been added to the slave node of synchronizing network by with it establishes the nodes of the slave node of the synchronizing network to be added of bi-directional synchronization
Information is sent to host node.
Host node other than needing to detect whether to receive the access signal that the slave node of synchronizing network to be added is sent,
Also need to detect whether to receive the section for having been added to the slave node of the synchronizing network to be added of slave node transmission of synchronizing network
Point information.
The nodal information that the slave node of synchronizing network is sent is had been added to if it is determined that receiving, then illustrates to deposit in synchronizing network
The slave node of the synchronizing network to be added of synchronizing network is added in the slave node by having been added to synchronizing network；Otherwise, it does not deposit
The slave node of the synchronizing network to be added of synchronizing network is added in the slave node by having been added to synchronizing network.
S204, TTI resource is distributed for the slave node of the synchronizing network to be added.
There is the synchronous net to be added that synchronizing network is added by the slave node for having been added to synchronizing network in synchronizing network
The slave node of network, then need for synchronizing network to be added slave node distribute TTI resource so that synchronizing network to be added from
Node can send data by any neighbors into synchronizing network after synchronizing network is added.
S205, the TTI resource is sent to the slave node for having been added to synchronizing network, to have added by described
The TTI resource is sent to the slave node of the synchronizing network to be added by the slave node for entering synchronizing network.
During another kind is realized, however, it is determined that receive access signal, then by executing step S206-S207, realize and establish master
Bi-directional synchronization between node and the slave node of synchronizing network to be added.
S206, propagation delay time is calculated according to the access signal；
Propagation delay time is calculated according to the access signal on the basis of its local frame boundaries in host node.
S207, the propagation delay time is sent to the slave node of the synchronizing network to be added, so that described to be added same
The slave node for walking network adjusts the bi-directional synchronization of foundation and the host node after frame boundaries according to the propagation delay time.
The two-way simultaneous mode and Fig. 3 a- between the slave node of synchronizing network to be added and host node are established in the present embodiment
The implementation of 3c is similar, and details are not described herein again.
From above-mentioned technical proposal it is found that sending synchronization signal as the host node of synchronisation source in the present embodiment, and can connect
It is that the slave node of the synchronizing network to be added distributes after the nodal information for receiving the slave node transmission for having been added to synchronizing network
TTI resource；The TTI resource is sent to the slave node for having been added to synchronizing network, to have been added to together by described
The TTI resource is sent to the slave node of the synchronizing network to be added by the slave node of step network, so that synchronous net to be added
The slave node of network is added in synchronizing network by having been added to the slave node of synchronizing network.Avoid synchronizing network to be added
When from the distance between node and host node farther out, the synchronization signal of host node transmission cannot be received, and then cannot be added same
The problem of walking network generates.And since the slave node of synchronizing network to be added can have been added to synchronizing network by other
It is added to synchronizing network from node multi-hop, and is not that only can be just added to by receiving the synchronization signal of host node transmission
Synchronizing network, therefore, the synchronizing network of building are not the Star Network centered on host node, but can construct and arbitrarily open up
The synchronizing network for flutterring structure solves the problems, such as that the synchronizing network Self-organization constructed in the prior art is poor.
It is shown in Figure 6 based on implementation above, it include a host node in synchronizing network, two have been added to synchronous net
The slave node of network is from node A and from node B, the slave node of a synchronizing network to be added respectively.In this concrete application field
Jing Zhong, master node, slave node A and synchronization signal/broadcast singal is sent according to different time slot respectively from node B.Wherein, main
The synchronous signal sequence that node is sent is different with from node A, from the synchronous signal sequence of node B transmission, from node A and
The synchronous signal sequence sent from node B is identical.The method for constructing synchronizing network are as follows:
The slave node of synchronizing network to be added preferentially detects the synchronization signal of host node transmission, and a kind of situation is, due to
It is remote that the distance between slave node and host node of synchronizing network is added, the slave node of synchronizing network to be added is caused not detect
The synchronization signal that host node is sent.In such cases, the slave nodal test of synchronizing network to be added is sent from node A, from node B
Synchronization signal.
If synchronizing network to be added slave nodal test to multiple synchronization signals from node, then, select multiple synchronizations
The highest synchronization signal of peak value in signal, determine it is corresponding with the highest synchronization signal of the peak value from node, as shown in Figure 5 from
Node A.The broadcast singal sent from node A is parsed, time domain/frequency domain/sequence resources from node A are obtained.This from A pairs of node
On the time domain/frequency domain/sequence resources answered, send access signal to from node A, and establish the slave node of synchronizing network to be added with
Bi-directional synchronization between node A.At this point, due to the slave node of synchronizing network to be added have been set up in synchronizing network
Bi-directional synchronization between node A, therefore node of the slave node of synchronizing network to be added as new access synchronizing network.
Host node is forwarded to from node A by the nodal information of new access node, wherein from can between node A and host node
It can be apart from farther out, it is thus possible to need that the nodal information of new access node master could be forwarded to from the forwarding of node by multiple
Node.After host node receives nodal information, TTI resource, and the TTI that will be distributed for new access node are distributed for new access node
TTI resource is sent to new access node from node A by broadcast singal to from node A by resource forwarding.
Another situation is that the synchronization signal of synchronizing network to be added sent slave nodal test to host node then passes through
The broadcast singal of host node is parsed, parsing obtains time domain/frequency domain/sequence resources of host node.The corresponding time domain of the host node/
On frequency domain/sequence resources, access signal is sent to host node, is established between the slave node of synchronizing network to be added and host node
Bi-directional synchronization.Then host node directly distributes TTI resource to the slave node being newly added by broadcast singal, so that the new addition
From node data can be sent by arbitrary node into synchronizing network in the TTI resource distributed for it.
The method of corresponding above-mentioned building synchronizing network, the present embodiment also discloses a kind of terminal, shown in Figure 7, the end
End 7 includes:
First memory 701 and first processor 702；
First memory 701 is used to store the program code of the method for building synchronizing network；
First processor 702 is for calling the said program code stored in first memory 701, to realize such as Fig. 2 institute
The method of the building synchronizing network shown.
Based on implementation above, terminal is sent by having been added to the terminal of synchronizing network to the terminal of synchronizing network to be added
Synchronization signal, so that the terminal of synchronizing network to be added can detecte synchronization signal, and to the terminal for sending the synchronization signal
Access signal is sent, responds the propagation delay time returned after the access signal receiving the terminal for having been added to synchronizing network
Afterwards, frame boundaries are adjusted according to propagation delay time, the bi-directional synchronization of the terminal of synchronizing network is established and have been added to, thus by
Be added synchronizing network terminal be added in synchronizing network, prevent synchronizing network to be added terminal from receiving host node
The synchronization signal of transmission simultaneously can be added to synchronization by the terminal for having been added to synchronizing network in the case where synchronizing network is added
In network, solve the problems, such as that synchronizing network cannot be added in the terminal of synchronizing network to be added in the prior art.And due to be added
Synchronizing network is added in the terminal multi-hop that the terminal of the synchronous network of networking can have been added to synchronizing network by other, and is not only
Have by receive host node transmission synchronization signal synchronizing network could be added, therefore, the synchronizing network of building be not with
Star Network centered on host node, but randomly topologically structured synchronizing network can be constructed, solve structure in the prior art
The problem for the synchronizing network Self-organization difference built.
Meanwhile the method for corresponding above-mentioned building synchronizing network, the present embodiment also disclose a kind of network equipment, as base station,
AP access point apparatus etc., shown in Figure 8, which includes:
Second memory 801 and second processor 802；
Second memory 801 is used to store the program code of the method for building synchronizing network；
The second processor is for calling the said program code stored in second memory 801, to realize such as Fig. 5 institute
The method of the building synchronizing network shown.
From above-mentioned technical proposal it is found that sending synchronization signal as the network equipment of synchronisation source in the present embodiment, and can be with
It is the terminal distribution of the synchronizing network to be added after the nodal information for receiving the terminal transmission for having been added to synchronizing network
TTI resource；The TTI resource is sent to the terminal for having been added to synchronizing network, to have been added to synchronization by described
The TTI resource is sent to the terminal of the synchronizing network to be added by the terminal of network, so that the end of synchronizing network to be added
End is added in synchronizing network by having been added to the terminal of synchronizing network.Avoid the terminal and network of synchronizing network to be added
The distance between equipment farther out when, the synchronization signal of network equipment transmission cannot be received, and then synchronizing network cannot be added
Problem generates.And since the terminal multi-hop that the terminal of synchronizing network to be added can have been added to synchronizing network by other adds
Enter to synchronizing network, and be not that only can just be added to synchronizing network by receiving the synchronization signal of network equipment transmission,
Therefore, the synchronizing network of building is not the Star Network centered on the network equipment, but can be constructed randomly topologically structured
Synchronizing network, solve the problems, such as that the synchronizing network Self-organization constructed in the prior art is poor.
Present invention also provides a kind of synchronous network system, such as MESH synchronous network system, synchronizing network in the present embodiment
System includes: the network equipment, at least one first terminal and at least one second terminal, wherein first terminal is to be added same
Network, terminal as shown in Figure 7 are walked, second terminal has been added to synchronizing network, wherein terminal as shown in Figure 7 is added to together
Second terminal is changed to after step network, it should be noted that second terminal further includes being added to synchronizing network by host node
Terminal.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.The device provided for embodiment
For, since it is corresponding with the method that embodiment provides, so being described relatively simple, related place is said referring to method part
It is bright.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute
State in the process, method, article or equipment of element that there is also other identical elements.
The foregoing description of the disclosed embodiments can be realized those skilled in the art or using the present invention.To this
A variety of modifications of a little embodiments will be apparent for a person skilled in the art, and the general principles defined herein can
Without departing from the spirit or scope of the present invention, to realize in other embodiments.Therefore, the present invention will not be limited
It is formed on the embodiments shown herein, and is to fit to consistent with the principles and novel features disclosed in this article widest
Range.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (11)
1. a kind of method for constructing synchronizing network, which is characterized in that applied on the slave node of synchronizing network to be added, the side
Method includes:
Synchronization signal is detected, and obtains the frame boundaries of the synchronization signal；Wherein synchronization signal includes that at least one has been added to
The synchronization signal that the slave node of synchronizing network is sent；
Access signal is sent to the slave node for having been added to synchronizing network described in the synchronization signal is sent；
When determining whether that receiving the slave node for having been added to synchronizing network responds the transmission returned after the access signal
Prolong；
If it is determined that receive the propagation delay time, then the frame boundaries are adjusted according to the propagation delay time, establish with it is described
The bi-directional synchronization of the slave node of synchronizing network is added.
2. the method for building synchronizing network according to claim 1, which is characterized in that described to the transmission synchronization signal
Have been added to synchronizing network slave node send access signal, comprising:
The synchronization signal is parsed, obtains having been added to the corresponding running time-frequency resource of the slave node of synchronizing network with described；
On the running time-frequency resource, the slave node that Xiang Suoshu has been added to synchronizing network sends access signal.
3. the method for building synchronizing network according to claim 2, which is characterized in that it is described determine whether to receive it is described
The slave node for having been added to synchronizing network responds the propagation delay time returned after the access signal and includes:
Continue listening broadcast signal, detects have been added to synchronous net described in whether having on the running time-frequency resource for sending the access signal
The propagation delay time that the slave node of network issues.
4. method according to claim 1 to 3, which is characterized in that
The detection synchronization signal, and the frame boundaries for obtaining the synchronization signal include:
Detect the synchronization signal that host node is sent；
If the synchronization signal of host node transmission is not detected, what the slave node that detection has been added to synchronizing network was sent synchronizes letter
Number；
If detecting the synchronization signal that the slave node for having been added to synchronizing network is sent, synchronization is had been added to described in acquisition
The frame boundaries for the synchronization signal that the slave node of network is sent.
If 5. according to the method described in claim 4, it is characterized in that, it is described detect it is described have been added to synchronizing network from
The synchronization signal that node is sent then has been added to the frame boundaries packet of the synchronization signal of the slave node transmission of synchronizing network described in acquisition
It includes:
If synchronization signal that the slave node for having been added to synchronizing network detected is sent be it is multiple, compare and detect
The peak value of multiple synchronization signals obtains the highest synchronization signal of peak value；
Obtain the frame boundaries of the highest synchronization signal of the peak value.
6. method described in -5 any one according to claim 1, which is characterized in that described to adjust institute according to the propagation delay time
Frame boundaries are stated, are established after the bi-directional synchronization with the slave node for having been added to synchronizing network, further includes:
The host node that the slave node forwarding of synchronizing network is had been added to described in reception is the slave node of the synchronizing network to be added
The TTI resource of distribution, to be successfully joined the synchronizing network；Wherein, the slave node of the synchronizing network to be added becomes newly
Have been added to the slave node of synchronizing network.
7. a kind of method for constructing synchronizing network, which is characterized in that be applied on host node, comprising:
Send synchronization signal；
Determine whether to receive access signal, wherein the access signal is that the slave node of synchronizing network to be added is detecting
It is sent after the synchronization signal；
If it is determined that being not received by access signal, it is determined whether receive and have been added to the section that the slave node of synchronizing network is sent
Point information, the nodal information are the nodal information of the slave node of synchronizing network to be added；
The nodal information that the slave node of synchronizing network is sent is had been added to if it is determined that receiving, then is the synchronizing network to be added
Slave node distribute TTI resource；
The TTI resource is sent to the slave node for having been added to synchronizing network, to have been added to synchronous net by described
The TTI resource is sent to the slave node of the synchronizing network to be added by the slave node of network.
8. the method according to the description of claim 7 is characterized in that if it is determined that receiving access signal, then according to the access
Propagation delay time is calculated in signal；
Send the propagation delay time to the slave node of the synchronizing network to be added so that the synchronizing network to be added from
Node establishes the bi-directional synchronization with the host node after adjusting frame boundaries according to the propagation delay time.
9. a kind of terminal characterized by comprising first memory and first processor；
Wherein, the first memory is used to store the program code of the method for building synchronizing network；
The first processor is for calling the said program code stored in the first memory, to realize such as claim
The method of synchronizing network is constructed described in 1-6 any one.
10. a kind of network equipment characterized by comprising second memory and second processor；
Wherein, the second memory is used to store the program code of the method for building synchronizing network；
The second processor is for calling the said program code stored in the second memory, to realize such as claim
The method of synchronizing network is constructed described in 7 or 8.
11. a kind of synchronous network system characterized by comprising at least one terminal as claimed in claim 9 and one are such as
The network equipment described in any one of claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262147.0A CN109982428A (en) | 2019-04-02 | 2019-04-02 | Construct method, terminal, the network equipment and the synchronous network system of synchronizing network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910262147.0A CN109982428A (en) | 2019-04-02 | 2019-04-02 | Construct method, terminal, the network equipment and the synchronous network system of synchronizing network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109982428A true CN109982428A (en) | 2019-07-05 |
Family
ID=67082425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910262147.0A Pending CN109982428A (en) | 2019-04-02 | 2019-04-02 | Construct method, terminal, the network equipment and the synchronous network system of synchronizing network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109982428A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110958504A (en) * | 2019-12-13 | 2020-04-03 | 中国电子科技集团公司第五十四研究所 | High-stability high-reliability time frequency network implementation method based on optical fiber ring network architecture |
| CN113574915A (en) * | 2021-02-02 | 2021-10-29 | 华为技术有限公司 | Short-distance communication method and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102904609A (en) * | 2012-06-14 | 2013-01-30 | 中国科学技术大学 | Networking method for integrated power line carrier communication network and topology network |
| CN104468017A (en) * | 2009-05-18 | 2015-03-25 | 三星电子株式会社 | Network synchronization method and apparatus for performing time synchronization between nodes |
| CN105407463A (en) * | 2015-12-09 | 2016-03-16 | 北京必创科技股份有限公司 | Wireless sensor network system |
| CN106455038A (en) * | 2016-10-10 | 2017-02-22 | 海能达通信股份有限公司 | Master node, slave node and synchronization information self-correcting method |
| CN107155213A (en) * | 2016-03-04 | 2017-09-12 | 海能达通信股份有限公司 | Synchronous method, node apparatus and Wireless MESH network system |
| CN109479298A (en) * | 2016-07-28 | 2019-03-15 | 高通股份有限公司 | The mechanism of covering outside link device is notified for signaling in wireless communications |
-
2019
- 2019-04-02 CN CN201910262147.0A patent/CN109982428A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104468017A (en) * | 2009-05-18 | 2015-03-25 | 三星电子株式会社 | Network synchronization method and apparatus for performing time synchronization between nodes |
| CN102904609A (en) * | 2012-06-14 | 2013-01-30 | 中国科学技术大学 | Networking method for integrated power line carrier communication network and topology network |
| CN105407463A (en) * | 2015-12-09 | 2016-03-16 | 北京必创科技股份有限公司 | Wireless sensor network system |
| CN107155213A (en) * | 2016-03-04 | 2017-09-12 | 海能达通信股份有限公司 | Synchronous method, node apparatus and Wireless MESH network system |
| CN109479298A (en) * | 2016-07-28 | 2019-03-15 | 高通股份有限公司 | The mechanism of covering outside link device is notified for signaling in wireless communications |
| CN106455038A (en) * | 2016-10-10 | 2017-02-22 | 海能达通信股份有限公司 | Master node, slave node and synchronization information self-correcting method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110958504A (en) * | 2019-12-13 | 2020-04-03 | 中国电子科技集团公司第五十四研究所 | High-stability high-reliability time frequency network implementation method based on optical fiber ring network architecture |
| CN113574915A (en) * | 2021-02-02 | 2021-10-29 | 华为技术有限公司 | Short-distance communication method and device |
| WO2022165653A1 (en) * | 2021-02-02 | 2022-08-11 | 华为技术有限公司 | Short-distance communication method and apparatus |
| CN113574915B (en) * | 2021-02-02 | 2022-09-09 | 华为技术有限公司 | Short-distance communication method, device, chip system, terminal and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106804058B (en) | clustering time synchronization method combined with topology maintenance | |
| JP7001227B2 (en) | Wireless link monitoring method and wireless link monitoring device | |
| KR101302287B1 (en) | Air interface synchronization method and system for home nodeb | |
| KR100695074B1 (en) | Time synchronizing method in wireless sensor networks | |
| CN107155213A (en) | Synchronous method, node apparatus and Wireless MESH network system | |
| JP2785789B2 (en) | Digital mobile communication system | |
| CN107534945A (en) | A kind of D2D synchronous method and user equipment, serving cell | |
| CN103905135A (en) | Method, device and system for realizing time synchronization | |
| KR20070022706A (en) | Distributed synchronization method and system | |
| CN108599888A (en) | A kind of distributed network clock synchronizing system | |
| CN109412736B (en) | Timing synchronization method for narrowband ad hoc network | |
| Dian et al. | A study in accuracy of time synchronization of BLE devices using connection-based event | |
| US20160165557A1 (en) | Adaptive, predictive synchronization for reducing connection establishment delays in ad-hoc frequency hopping spread spectrum networks | |
| WO2017080247A1 (en) | Synchronization method and device | |
| CN109982428A (en) | Construct method, terminal, the network equipment and the synchronous network system of synchronizing network | |
| CN110113812A (en) | A kind of wireless communication whole network synchronous method based on TD-LTE | |
| CN108736999A (en) | A kind of method for synchronizing time and device | |
| EP1936837B1 (en) | Apparatus for synchronizing a first transmit and receive device to a second transmit and receive device | |
| CN107005956A (en) | Synchronous method and equipment in a kind of communication network | |
| CN102447745A (en) | Method and device for processing residence time of message on transparent clock (TC) equipment | |
| CN102149188B (en) | Method for synchronizing nodes | |
| CN109392078B (en) | Signal detection and transmission method and device, and remote user equipment | |
| Sun et al. | Distributed clock synchronization with application of D2D communication without infrastructure | |
| JP7185054B2 (en) | Resource cycle configuration method and device, link processing and establishment method and device | |
| CN103796277B (en) | Method, system and device for indicating beacon frame sending and sending beacon frame |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190705 |
|
| RJ01 | Rejection of invention patent application after publication |