CN101155098B - Wireless Mesh and its resource management method - Google Patents
Wireless Mesh and its resource management method Download PDFInfo
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- CN101155098B CN101155098B CN2006101523810A CN200610152381A CN101155098B CN 101155098 B CN101155098 B CN 101155098B CN 2006101523810 A CN2006101523810 A CN 2006101523810A CN 200610152381 A CN200610152381 A CN 200610152381A CN 101155098 B CN101155098 B CN 101155098B
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Abstract
The invention provides a wireless Mesh and method of resource management. The said method comprises: a source node sending a request message for obligating the resource on a data path when the data path corresponding with the source node does not obligate source for data stream; the said request message for obligating the resource being relayed to the next node, when the intermediate node on the data path receives the said request message for obligating the resource and the data stream on the said node being subjected to corresponding resource obligating treatment. The said invention can perform resource management in wireless Mesh, and carry out the operation such as obligating and maintaining the resource and ensure the transmission quality of the special stream data.
Description
Technical field
The present invention relates to a kind of communication system and method thereof, particularly relate to a kind of Wireless Mesh and method for managing resource thereof.
Background technology
Existing 802.11E standard adopts resource management techniques for the QoS (Quality ofService, service quality) that supports WLAN (Wireless local area network, WLAN (wireless local area network)).The resource management techniques of described employing mainly contains: adopt EDCA (Enhanced distributed channel access, the expansion distributed channel inserts) mode competitive channel, the access of adopting connection control method restriction special flow and direct link connection etc.Wherein, connection control method comprises two kinds: based on the competition and based on the scheduling connection control method.Below describe respectively:
Based on competition: the formation of some high priority need just can be used by application, if STA is (Station, work station) with AP (Access Point, access point) wants to use this high-priority queue transmission data, STA just need send request to AP so, comprises some characteristics of the data flow that will send in the request; AP can refuse after receiving request, accept this request, or provides the data characteristic that suggestion is used.AP can do some controls to the data stream transmission procedure according to the characteristic of data flow.
Based on transmitting some special streams between scheduling: STA and the AP if desired, these flow transmission have some specific requirements to channel resource, such as bandwidth, time delay etc.; STA need file an application to HC (Hybridcoordinator, hybrid coordinator) so.Comprised in this application will data flow transmitted some features, HC can refuse, accept this application, or provide optional application.
Above-mentioned resource management is the resource management at BSS (Basic Service Set, Basic Service Set) networking, and it is applied in a certain section of the relatively-stationary wlan network (promptly two node between).
In addition, Wireless Mesh (wireless mesh network) is a kind of novel wireless mesh network, is the wireless multi-hop network that is come by the WLAN development.This network mainly is made up of three kinds of logical blocks: STA 130, MP (Mesh Point, Mesh node) 110 and MAP (Mesh Access Point, Mesh access point) 120, specifically can consult Fig. 1.
Wherein, 110 of MP have Mesh Service function as wireless message forwarding node; MAP120 both can insert STA and also can be used as forward node, had AP Service and MeshService function.All logical blocks of Wireless Mesh all link to each other by wireless mode, and link between each logical block and message repeating process can be with reference to existing 802.11 series standard agreements.
In the Wireless Mesh multi-hop environment, when some special data streams were forwarded, if channel disturbance is serious, the bandwidth deficiency can have a strong impact on the laser propagation effect of these special data streams, thereby also needs to adopt resource management techniques to guarantee the transmission of data at Wireless Mesh.But at present the Mesh draft standard 802.11S mechanism that still not have to be correlated with is described the QoS among the Mesh.With respect to prior art at resource management techniques BSS, that be applied to certain two stationary nodes, application resource administrative skill in Wireless Mesh if desired, need carry out resource management at a series of mobile nodes, the existing resource administrative skill can not simply be transplanted in the Wireless Mesh; And because some characteristics of wireless Mesh netword: channel resource is shared, node is removable, node is supported electricity-saving function, two layer message addressing and forwarding, network topology is uncertain etc., and QoS mechanism in the Wireless Mesh is had higher requirement.Therefore, be necessary to propose a kind of resource management method of suitable Wireless Mesh.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method for managing resource of suitable Wireless Mesh.
The technical problem to be solved in the present invention is that a kind of Wireless Mesh that can carry out resource management also is provided.
For solving above-mentioned first technical problem, the objective of the invention is to be achieved through the following technical solutions: a kind of Wireless Mesh resource management method is provided, comprises step: source node is initiated resource reservation request message on data path; Accept under the described resource reservation request situation at the intermediate node on the data path, transmit this resource request message, and make the respective resources reservation process for this data flow at this node to next node.
Preferably, initiating on the described data path to comprise before the resource reservation request messages step at source node: before source node transmission data flow, judge on the described data path whether reserved resource for this data flow.
Preferably, on described data path, initiate also to comprise after the resource reservation request messages step at source node: refuse under the described resource reservation request situation at the intermediate node on the data path, return refusal response and give source node, perhaps transmit resource reservation advice message that this node provides to next node.
Preferably, also comprise after next node at this resource request message of forwarding: described next node is judged certainly as destination node, and accept or refuse under the described resource reservation request situation in destination node, return the resource reservation response message to source node, wherein said resource reservation response message carries receives information or refusal information the resource reservation advisory information that described refuse information is carried reason for rejection or provided.
Preferably, describedly return the resource reservation response message specifically: return the resource reservation response message to source node through intermediate node to the step of source node, described intermediate node handles accordingly according to the resource reservation advisory information of carrying in the described resource reservation response message, and described source node is according to receiving information of carrying in the described resource reservation response message or refusal information handles accordingly.
Preferably, carried under the situation of receiving information at the resource reservation response message that returns source node,
When arbitrary node on the described data path sent resource deletion notice, described intermediate node was deleted reserved resource voluntarily;
When arbitrary node sends the resource removal request on the described data path, described intermediate node refusal deletion reserved resource; Or transmit this resource removal request to next node, when destination node is received this request, return and whether allow the response message deleted, when described response message shows the permission deletion, intermediate node deletion reserved resource, when described response message showed the refusal deletion, intermediate node was then directly transmitted this message;
When arbitrary node route ruptured on the described data path, this node was initiated resource deletion notice, notifies described intermediate node to delete reserved resource voluntarily;
When carrying temporal information in described data flow transmitted, intermediate node is according to the time of described time information renovation resource reservation;
When carrying temporal information in the information flow through the resource reservation path outside described data flow, intermediate node is according to the time of described time information renovation resource reservation;
When in described resource reservation request message, carrying temporal information, and after its time surpasses the time point that this temporal information shows in a node, if do not receive new time lastest imformation, this knot removal reserved resource then.
Preferably, accept to comprise before the described resource reservation request at intermediate node: judge that this node is an intermediate contact.
Preferably, described data flow is a special data stream, and any direction between any node of the step of described reserved resource in described data path is carried out.
Preferably, described resource reservation request message sends after the route of described data path is set up again, or sends with route requests.
For solving above-mentioned second technical problem, the objective of the invention is to be achieved through the following technical solutions: a kind of Wireless Mesh is provided, comprise data path, described data path comprises source node, intermediate node and destination node, described source node comprises the resource reservation request message generation unit, be used to generate resource reservation request message, described intermediate node comprises rm-cell, be used for accepting under the described resource reservation request situation at intermediate node, transmit this resource request message to next node, and make the respective resources reservation process for this data flow at this node.
Preferably, described source node further comprises the resource reservation judging unit, is used for judging on the described data path whether reserved resource for this data flow before source node sends data flow.
Preferably, described rm-cell is refused under the described resource reservation request situation at the intermediate node on the judgment data path, is used to return refusal response and gives source node, perhaps transmits resource reservation advice message that this node provides to next node.
Preferably, described destination node comprises the response message generation module, be used for judging that this node is destination node and accepts or refuse under the described resource reservation request situation in destination node, generate the resource reservation response message, wherein said resource reservation response message turns back to source node through intermediate node, and carry and receive information or refusal information, the resource reservation advisory information that described refuse information is carried reason for rejection or provided.
Preferably, carried under the situation of receiving information at described resource reservation response message, described rm-cell is judged the resource reservation success,
When arbitrary node sends resource deletion notice on described data path, be used for deleting voluntarily this node reserved resource;
When arbitrary node sends the resource removal request on described data path, be used for refusal deletion reserved resource; Or transmit this resource removal request to next node, when destination node is received this request and return the response message that whether allows to delete, if described response message shows when allowing deletion, be used to delete reserved resource, if when described response message shows the refusal deletion, then be used for directly transmitting this message;
When arbitrary node route ruptures on described data path, be used to indicate this node to initiate resource deletion notice, the notice intermediate node is deleted reserved resource voluntarily;
Be used for time in resource reservation request message generation unit rise time in described data flow transmitted during information according to described time information renovation resource reservation;
When carrying temporal information in the information flow outside described data flow, be used for time according to described time information renovation resource reservation through the resource reservation path;
In resource reservation request message generation unit rise time during information in described resource reservation request message, and after time of this node surpasses the time point that this temporal information shows, if do not receive new time lastest imformation, be used to delete reserved resource.
More than first technical scheme as can be seen, because Wireless Mesh resource management method of the present invention is when intermediate node is received this request and accept described resource reservation request situation, the next node that forwards the request to this data path allows its also reserved resource, circulate up to destination node always, and make the respective resources reservation process for this data flow at this node.Like this, all intermediate nodes on this data path and destination node have all been reserved respective resources for this new business, and then chnnels of resources is reserved successfully, can transmit special data stream on Wireless Mesh, and guarantee its transmission quality to the full extent.
More than second technical scheme as can be seen, because the rm-cell of Wireless Mesh of the present invention by intermediate node allows its also reserved resource in the next node of accepting to forward the request under the resource reservation request situation this data path, all intermediate node is all accepted under the described resource reservation request situation described request to be passed to destination node, and makes the respective resources reservation process at this node for this data flow.Like this, all intermediate nodes on this data path and destination node have all been reserved respective resources for this new business, and then chnnels of resources is reserved successfully, can transmit special data stream on Wireless Mesh, and guarantee its transmission quality to the full extent.
Description of drawings
Fig. 1 is the system construction drawing of prior art Wireless Mesh;
Fig. 2 is the flow chart of Wireless Mesh management method of the present invention;
Fig. 3 is the resource reservation request transmission of messages flow chart in the Wireless Mesh management method of the present invention;
Fig. 4 is the resource reservation request response message transfer process figure in the Wireless Mesh management method of the present invention;
Fig. 5 is a kind of resource deletion notification message transfer process figure in the Wireless Mesh management method of the present invention;
Fig. 6 is the another kind of resource deletion notification message transfer process figure in the Wireless Mesh management method of the present invention;
Fig. 7 is the resource deletion request message transfer process figure in the Wireless Mesh management method of the present invention;
Fig. 8 is the resource removal request response message transfer process figure in the Wireless Mesh management method of the present invention;
Fig. 9 is the system construction drawing of Wireless Mesh of the present invention.
Embodiment
Basic principle of the present invention is: at the Wireless Mesh with a series of mobile nodes, adopt the message transmission and the coordination system to carry out resource management.When source node is initiated resource reservation request message on data path, if intermediate node is accepted described resource reservation request, then transmit this resource request message to next node, and make the respective resources reservation process for this data flow at this node, described next node is also similarly handled simultaneously, up to arriving destination node.Destination node is also accepted this request, and then chnnels of resources is reserved successfully.Intermediate node can also be refused described resource reservation request, during simple refusal, returns the refusal response message and returns source node, if provide optional resource reservation advisory information on the refusal basis, then transmits this resource reservation advisory information to next node.
The present invention at first provides the basic embodiment of a Wireless Mesh method for managing resource, comprises step:
One, source node is initiated resource reservation request message on data path;
Two, accept under the described resource reservation request situation at the intermediate node on the data path, transmit this resource request message, and make the respective resources reservation process for this data flow at this node to next node.
Step 1 is that the source node of carrying out new business is set up a data path for this new business, at first need be on this path reserved resource, therefore initiate resource reservation request message.Step 2 is the intermediate node on this data path when receiving this request and accepting described resource reservation request situation, and the next node that forwards the request to this data path allows its also reserved resource, and makes the respective resources reservation process at this node for this data flow.Like this, all intermediate nodes on this data path and destination node have all been reserved respective resources for this new business, and then chnnels of resources is reserved successfully, can carry out this new business.
It more than is the process that adopts the message transmission and the coordination system to carry out resource management, obviously adopt this flow process, any a plurality of nodes reserved resource under certain condition on the data path, realization has been reached the irrealizable function of prior art fixed network resource management at the Wireless Mesh resource management with a series of mobile nodes.
This node of above-mentioned steps two is that data flow is made respective resources reservation process step, is not limited to carry out when intermediate node is accepted resource reservation request, can also carry out when receiving the response message of destination node.
Below in conjunction with execution mode and accompanying drawing, describe the present invention.
Wireless Mesh resource management method of the present invention comprises two aspects: 1) resource reservation; 2) conservation of resources.Consult Fig. 2, corresponding resource reservation aspect, Wireless Mesh resource management method of the present invention comprises step:
201, judge on the described data path whether reserved resource, be process ends then, otherwise enter step 202 for this data flow; Described data flow is a special data stream.
202, be not under the data flow reserved resource situation to data path that should source node, source node is initiated resource reservation request message on described data path; Described resource reservation request message sends after the route of described data path is set up again, or sends with route requests.
The message format that resource reservation request message adopts comprises information as follows:
| TID | DIRECTION | TSPEC information |
Table one: resource reservation request frame structure
Wherein, TID represents: the sign of the data flow of being asked; DIRECTION represents: the direction of resource reservation can be unidirectional, two-way between source node and the destination node, or flow between any node on this link mutual; TSPEC information: having described the various information of resource, can be optional advisory information.
This step is that the source node of carrying out new business is set up a data path for this new business, at first need be on this path reserved resource, therefore initiate resource reservation request message.
203, judge that this node is intermediate node or destination node, be then to enter step 204, otherwise enter step 206;
204, be under the intermediate node situation at this node, judge whether intermediate node accepts described resource reservation request, is then to enter step 205, otherwise enter step 207;
205, consult Fig. 3, accept under the described resource reservation request situation, transmit this resource request message, and make the respective resources reservation process for this data flow at this node to next node at the intermediate node on the data path.
The message format that the resource reservation request message of transmitting adopts comprises information as follows:
| TID | DIRECTION | TSPEC information |
Table two: the resource reservation request frame structure of forwarding
In this step, forward the request to the next node of this data path, allow also reserved resource of this next node.When being forwarded to next node, need carry out the judgement of step 203.
206, consult Fig. 4, judging that this node is a destination node, and accept or refuse under the described resource reservation request situation in destination node, destination node is returned the resource reservation response message to source node, wherein said resource reservation response message carries receives information or refusal information the resource reservation advisory information that described refuse information is carried reason for rejection or provided.
Accept under the described resource reservation request situation in destination node, destination node is returned and is carried the resource reservation response message of receiving information to source node, show that all nodes on the data path all accept resource reservation request, and reserve respective resources, the resource path reservations success of declaration new business.
Refuse under the described resource reservation request situation in destination node, the resource reservation response message that carries refusal information turns back to source node through intermediate node, described intermediate node handles accordingly according to the resource reservation advisory information of carrying in the described resource reservation response message, and described source node is according to receiving information of carrying in the described resource reservation response message or refusal information handles accordingly.
| TID | Answer code | TSPEC information (optional) |
Table three: resource reservation response message frame structure
Wherein, answer code can be: refusal, acceptance, optional etc.; In optional time, need carry optional TSPEC information.If the answer code that the node of participation resource reservation is received in responding process is acceptance or optional, then this node can come to be the data flow reserved resource according to the resource reservation parameters of being accepted.
207, consult Fig. 3 again, refuse under the described resource reservation request situation, return refusal response and give source node, perhaps transmit resource reservation advice message that this node provides to next node at the intermediate node on the data path.Described refusal response message frame structure can be consulted table three, and the resource reservation advice message of forwarding can be attached in resource reservation request message, and its frame structure can be consulted table two.
From as can be seen above, Wireless Mesh resource management method of the present invention is when intermediate node is received this request and accept described resource reservation request situation, the next node that forwards the request to this data path allows its also reserved resource, circulate up to destination node always, and make the respective resources reservation process for this data flow at this node.Like this, all intermediate nodes on this data path and destination node have all been reserved respective resources for this new business, and then chnnels of resources is reserved successfully, can transmit special data stream on Wireless Mesh, and guarantee its transmission quality to the full extent.
Obviously adopt this flow process, any a plurality of nodes reserved resource is under certain condition realized having reached the irrealizable function of prior art fixed network resource management at the Wireless Mesh resource management with a series of mobile nodes on the data path.
In addition, intermediate node not only can be accepted described request, can also refuse merely or provide the optional suggestion of resource reservation on the basis of refusal, under the described resource reservation request situation of the simple refusal of intermediate node, return the refusal response and give source node, improve the resource management flow process; Refuse described resource reservation request and provide under the optional suggestion situation at intermediate node, transmit resource reservation advice message that this node provides, take corresponding actions with the prompting next node to next node.
Again, all accept resource reservation request and under the destination node refusal resource reservation request situation, the resource reservation response message that carries refusal information turns back to source node through intermediate node, tell source node resource reservation result at all intermediate nodes; And described intermediate node can handle accordingly according to the resource reservation advisory information of carrying in the resource reservation response message, enriches and improve the resource management flow process of Wireless Mesh.
In addition, resource reservation request message can send with route requests after the route of described data path is set up, and reduces message number, simplifies flow process.
After successfully setting up the resource path, promptly carried under the situation of receiving information at the resource reservation response message that returns source node, corresponding conservation of resources aspect, Wireless Mesh resource management method of the present invention comprises:
One, when arbitrary node on the described data path sent resource deletion notice, described intermediate node was deleted reserved resource voluntarily, does not need to respond;
Any one node in the reserved resource link can be initiated resource reservation deletion notification message, comprises the TID and the DIRECTION of this message in the message.Fig. 5 represents that the source node of resource reservation link or destination node initiate resource reservation deletion notice, and Fig. 6 represents that the intermediate node of resource reservation link initiates resource reservation deletion notice.
Receive the node of resource reservation link circuit deleting notice, delete the link circuit resource of reserving into this TID according to TID and DIRECTION, if intermediate node then needs to transmit the next node that this is notified to the reserved resource link simultaneously.
When the method is looked after some node on the data path and must be deleted this reserved resource, there is method to delete this reserved resource, do not influence this node work.
Two, when arbitrary node sends the resource removal request on the described data path, described intermediate node refusal deletion reserved resource, and response does not allow deletion;
Or permission deletion reserved resource, transmit this resource removal request to next node, under the situation that each intermediate node all allows, when destination node is received this request, return whether allow the response message deleted, when described response message shows when allowing deletion intermediate node deletion reserved resource, when described response message showed the refusal deletion, intermediate node was then directly transmitted this message;
It is example that Fig. 7 and Fig. 8 have lifted from the request of destination node initiation deletion reserved resource.Need to comprise TID and DIRECTION information in the deletion request message, show in the deletion response: can delete, cannot delete two kinds of answer codes.
The processing of request message: after node is received request, judge whether to allow the deletion resource according to s own situation; If allow, intermediate node then forwards the message to the next node of link, if do not need deletion then directly return response.
The processing of response message: node is received the response message from destination node, according to the answer code contents processing; Answer code is then deleted resource for the deletion resource; Otherwise directly be forwarded to next node;
Like this, can guarantee all to allow to delete under the reserved resource situation, just delete reserved resource, realize all release of node resource on the resource path at all nodes.
Three, when arbitrary node route ruptures on the described data path, this node is initiated resource deletion notice, notifies described intermediate node to delete reserved resource voluntarily;
When the method can guarantee that this reserved resource path can not exist, there is way to delete this reserved resource, do not influence other node work except that the node of this route fracture.
When four, carrying temporal information in described data flow transmitted, intermediate node is according to the time of described time information renovation resource reservation;
The method can realize the node resource reservation situation on the dynamic adjusting data path, can increase or reduce resource reservation in time, meets the needs of.
When five, carrying temporal information in the information flow through the resource reservation path outside described data flow, intermediate node is according to the time of described time information renovation resource reservation;
The method and said method are similar.
When six, in described resource reservation request message, carrying temporal information, and after its time surpasses the time point that this temporal information shows in a node, if do not receive new time lastest imformation, this knot removal reserved resource then.
The method is during reserved resource, just to reserve the time that reserved resource upgrades in beginning, does not receive new time lastest imformation yet in case surpass this time, shows that then this reserved resource can delete.
Consult Fig. 9, the present invention also provides a kind of Wireless Mesh.The corresponding new special data stream business of described Wireless Mesh is set up a data path.Described data path comprises source node 910, intermediate node 920 and destination node 930.
Described source node 910 comprises resource reservation judging unit 911 and resource reservation request message generation unit 912.Described resource reservation judging unit 911 is used for judging on the described data path whether reserved resource for this data flow before source node 910 sends data flow.Described resource reservation request message generation unit 912 is used at described data path not for generating resource reservation request message under the data flow reserved resource situation.
Described intermediate node 920 comprises rm-cell 921, is used for:
Accept under the described resource reservation request situation at intermediate node 920, transmit this resource request message, and make the respective resources reservation process for this data flow at this node to next node.
Under the described resource reservation request situation of the intermediate node on the judgment data path 920 refusal, return the refusal response and give source node 910, perhaps transmit resource reservation advice message that this node provides to next node.
Described destination node 930 comprises response message generation module 931, be used for judging that this node is destination node 930 and accepts or refuse under the described resource reservation request situation in destination node 930, generate the resource reservation response message, wherein said resource reservation response message turns back to source node 910 through intermediate node 920, and carry and receive information or refusal information, the resource reservation advisory information that described refuse information is carried reason for rejection or provided.
Carried under the situation of receiving information at described resource reservation response message, promptly successfully set up the resource reservation path after, described rm-cell 921 is judged the resource reservation success, and:
When arbitrary node sends resource deletion notice on described data path, be used for deleting voluntarily this node reserved resource;
When arbitrary node sends the resource removal request on described data path, be used for refusal deletion reserved resource; Or transmit this resource removal request to next node, when destination node 930 is received this request and return the response message that whether allows to delete, if described response message shows when allowing deletion, be used to delete reserved resource, if when described response message shows the refusal deletion, then be used for directly transmitting this message;
When arbitrary node route ruptures on described data path, be used to indicate this node to initiate resource deletion notice, notice intermediate node 920 is deleted reserved resource voluntarily;
Be used for time in resource reservation request message generation unit 912 rise time in described data flow transmitted during information according to described time information renovation resource reservation;
When carrying temporal information in the information flow outside described data flow, be used for time according to described time information renovation resource reservation through the resource reservation path;
In resource reservation request message generation unit 912 rise time during information in described resource reservation request message, and after time of this node surpasses the time point that this temporal information shows, if do not receive new time lastest imformation, be used to delete reserved resource.
From as can be seen above, the rm-cell 921 of Wireless Mesh of the present invention by intermediate node 920 allows its also reserved resource in the next node of accepting to forward the request under the resource reservation request situation this data path, all intermediate node 920 is all accepted under the described resource reservation request situation described request to be passed to destination node 930, and makes the respective resources reservation process at this node for this data flow.Like this, all intermediate nodes 920 and destination node 930 on this data path have all been reserved respective resources for this new business, and then chnnels of resources is reserved successfully, can transmit special data stream on Wireless Mesh, and guarantee its transmission quality to the full extent.
Obviously, adopt the present invention, any a plurality of nodes reserved resource is under certain condition realized having reached the irrealizable function of prior art fixed network resource management at the Wireless Mesh resource management with a series of mobile nodes on the data path.
More than a kind of Wireless Mesh provided by the present invention and method for managing resource thereof are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (14)
1. a Wireless Mesh resource management method is characterized in that, comprises step:
Source node is initiated resource reservation request message on data path;
Accept under the described resource reservation request situation at the intermediate node on the data path, transmit this resource reservation request message, and be that data flow is made the respective resources reservation process at this node to next node;
Described next node is judged oneself as destination node, and accepts to return the resource reservation response message to source node under the described resource reservation request situation in destination node, and wherein said resource reservation response message carries receives information.
2. Wireless Mesh resource management method according to claim 1, it is characterized in that, initiating on the described data path to comprise before the resource reservation request messages step at source node: before source node transmission data flow, judge on the described data path whether reserved resource for this data flow.
3. Wireless Mesh resource management method according to claim 1, it is characterized in that, on described data path, initiate also to comprise after the resource reservation request messages step at source node: refuse under the described resource reservation request situation at the intermediate node on the data path, return refusal response and give source node, perhaps transmit resource reservation advice message that this node provides to next node.
4. according to each described Wireless Mesh resource management method of claim 1 to 3, it is characterized in that, described destination node is under the described resource reservation request situation of refusal, return the resource reservation response message to source node, this resource reservation response message carries refusal information, the resource reservation advisory information that described refusal information is carried reason for rejection or provided.
5. Wireless Mesh resource management method according to claim 4, it is characterized in that, describedly return the resource reservation response message specifically: return the resource reservation response message to source node through intermediate node to the step of source node, described intermediate node handles accordingly according to the resource reservation advisory information of carrying in the described resource reservation response message, and described source node is according to receiving information of carrying in the described resource reservation response message or refusal information handles accordingly.
6. Wireless Mesh resource management method according to claim 4 is characterized in that, carried under the situation of receiving information at the resource reservation response message that returns source node,
When arbitrary node on the described data path sent resource deletion notice, described intermediate node was deleted reserved resource voluntarily;
When arbitrary node sends the resource removal request on the described data path, described intermediate node refusal deletion reserved resource; Or transmit this resource removal request to next node, when destination node is received this request, return and whether allow the response message deleted, when described response message shows the permission deletion, intermediate node deletion reserved resource, when described response message showed the refusal deletion, intermediate node was then directly transmitted this message;
When arbitrary node route ruptured on the described data path, this node was initiated resource deletion notice, notifies described intermediate node to delete reserved resource voluntarily;
When carrying temporal information in data flow transmitted, intermediate node is according to the time of described time information renovation resource reservation;
When carrying temporal information in the information flow through the resource reservation path outside described data flow, intermediate node is according to the time of described time information renovation resource reservation;
When in described resource reservation request message, carrying temporal information, and after its time surpasses the time point that this temporal information shows in a node, if do not receive new time lastest imformation, this knot removal reserved resource then.
7. according to each described Wireless Mesh resource management method of claim 1 to 3, it is characterized in that, accept to comprise before the described resource reservation request: judge that this node is an intermediate node at intermediate node.
8. according to each described Wireless Mesh resource management method of claim 1 to 3, it is characterized in that described data flow is a special data stream, any direction between any node of the step of described reserved resource in described data path is carried out.
9. according to each described Wireless Mesh resource management method of claim 1 to 3, it is characterized in that described resource reservation request message sends again, or sends with route requests after the route of described data path is set up.
10. Wireless Mesh, comprise data path, described data path comprises source node, intermediate node and destination node, it is characterized in that described source node comprises the resource reservation request message generation unit, be used to generate resource reservation request message, described intermediate node comprises rm-cell, be used for accepting under the described resource reservation request situation, transmit this resource reservation request message, and be that data flow is made the respective resources reservation process at this node to next node at intermediate node; Described destination node comprises the response message generation module, be used for judging that this node is destination node and accepts under the described resource reservation request situation in destination node, generate the resource reservation response message, wherein said resource reservation response message turns back to source node through intermediate node.
11. Wireless Mesh according to claim 10 is characterized in that, described source node further comprises the resource reservation judging unit, is used for judging on the described data path whether reserved resource for this data flow before source node sends data flow.
12. Wireless Mesh according to claim 10, it is characterized in that, described rm-cell is refused under the described resource reservation request situation at the intermediate node on the judgment data path, be used to return refusal response and give source node, perhaps transmit resource reservation advice message that this node provides to next node.
13. according to each described Wireless Mesh of claim 10 to 12, it is characterized in that, described response message generation module, also be used for judging that this node is destination node and refuses under the described resource reservation request situation in destination node, generate the resource reservation response message, wherein this resource reservation response message turns back to source node through intermediate node, and carries refusal information, the resource reservation advisory information that described refusal information is carried reason for rejection or provided.
14. Wireless Mesh according to claim 13 is characterized in that, has carried under the situation of receiving information at described resource reservation response message, described rm-cell is judged the resource reservation success,
When arbitrary node sends resource deletion notice on described data path, be used for deleting voluntarily this node reserved resource;
When arbitrary node sends the resource removal request on described data path, be used for refusal deletion reserved resource; Or transmit this resource removal request to next node, when destination node is received this request and return the response message that whether allows to delete, if described response message shows when allowing deletion, be used to delete reserved resource, if when described response message shows the refusal deletion, then be used for directly transmitting this message;
When arbitrary node route ruptures on described data path, be used to indicate this node to initiate resource deletion notice, the notice intermediate node is deleted reserved resource voluntarily;
Be used for time in resource reservation request message generation unit rise time in data flow transmitted during information according to described time information renovation resource reservation;
When carrying temporal information in the information flow outside described data flow, be used for time according to described time information renovation resource reservation through the resource reservation path;
In resource reservation request message generation unit rise time during information in described resource reservation request message, and after time of this node surpasses the time point that this temporal information shows, if do not receive new time lastest imformation, be used to delete reserved resource.
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| CN101645830B (en) * | 2008-08-07 | 2012-05-23 | 中国移动通信集团公司 | Method for packet scheduling of multi-hop network and node device |
| CN101827415B (en) * | 2010-04-16 | 2014-07-02 | 中兴通讯股份有限公司 | Channel allocating method and system in wireless mesh network |
| CN102547876B (en) * | 2011-11-28 | 2014-08-06 | 杭州电子科技大学 | System and method for reserving wireless mesh network channel resources with no interference to surrounding nodal points |
| CN103327542B (en) * | 2013-05-28 | 2016-05-11 | 中国电子科技集团公司第七研究所 | A kind of QoS support method and device that is applied to MANET network |
| WO2016112995A1 (en) * | 2015-01-16 | 2016-07-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Resource reservation protocol for wireless backhaul |
| CN105007610B (en) * | 2015-05-28 | 2020-03-06 | 海尔优家智能科技（北京）有限公司 | Method and device for multi-hop resource discovery |
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