CN102752200B

CN102752200B - Network energy-saving method and device

Info

Publication number: CN102752200B
Application number: CN201210214916.8A
Authority: CN
Inventors: 杨建军; 阴元斌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-06-27
Filing date: 2012-06-27
Publication date: 2015-07-08
Anticipated expiration: 2032-06-27
Also published as: CN102752200A

Abstract

The embodiment of the invention discloses a network energy-saving method and a device. The method is characterized in that a bandwidth utilization rate of an energy perception link is monitored, when the bandwidth utilization rate is lower than an energy-saving threshold value, the judgment for whether energy conservation is carried out or not for the energy perception link is triggered, when a next hop of a route is a node in an energy perception link group in which the energy perception link requiring the energy conservation stays, the routing calculation is carried out according interior gateway protocol (IGP) routing data excluding the energy perception link requiring the energy conservation; when each next hop in the group works out a novel next hop, each novel next hop is stored to a reserved route; and after an energy-saving message transmitted by an energy perception main node is received, the energy conservation is executed, and intelligent energy conservation for some links can be realized through the network.

Description

A kind of method and apparatus of network energy-saving

Technical field

The present invention relates to communication technical field, be specifically related to a kind of method and apparatus of network energy-saving.

Background technology

The operation of the Internet needs to consume a large amount of electric energy, and along with network size constantly expands the growth at full speed with traffic carrying capacity, network constantly increases the demand of electric energy and consuming, and all creates immense pressure to the operating cost of network and biological environment.Therefore, network energy-saving technology is more and more paid attention to.

The transmitting of data was once the main target of the Internet design and deployment, in order to tackle network failure and carrying bursty network traffic, the Internet needs to arrange a lot of redundant link when disposing, and provides the bandwidth far above average link flow for every bar link.The deployment of redundant link and bandwidth drastically increases the reliability of network.But experience shows that the average link bandwidth usage of backbone network is less than 40%, and the utilization of traffic engineering can reduce the maximum link bandwidth occupancy of network further.But link also must be held open when bandwidth usage is very low, a large amount of electric energy is caused to be wasted.When the network equipment not bearer traffic time, by this device shutdown or resting state can be placed in, thus save energy consumption.

But, there is no the method that specific implementation network layer is energy-conservation in prior art, and judgement artificially and operation substantially, do not have exercisable technical scheme to realize network layer energy-conservation.

Summary of the invention

Embodiments provide a kind of method and apparatus of network energy-saving, link can be closed dynamically, realize network energy-saving, and network can not be caused to shake.

Embodiments provide a kind of method of network energy-saving, described method comprises:

The bandwidth availability ratio of monitoring Energy-aware link;

When the bandwidth availability ratio monitoring Energy-aware link is lower than green-threshold, according to the precedence information stored, send energy-conservation request to Energy-aware host node, described energy-conservation request at least comprises: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link;

According to Interior Gateway Protocol (IGP) routing database that this locality stores, the down hop of each route is judged: judge that whether described down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; Wherein, each route described is do not comprise the route in the IGP routing database of the energy-conservation Energy-aware link of described hope;

If the Energy-aware link group interior joint at the down hop of the route Energy-aware link place that to be described hope energy-conservation, according to the IGP route data not comprising the energy-conservation Energy-aware link of described hope, re-starts router-level topology to each route described;

Judge whether each route described all calculates the down hop made new advances;

If all calculate the down hop made new advances, each new down hop is stored into backup path;

Send and agree to that energy-conservation message is to described Energy-aware host node;

The energy-conservation message that received energy perception host node sends, according to described backup path, energy-conservation.

The embodiment of the present invention additionally provides a kind of method of network energy-saving, and described method comprises:

The bandwidth availability ratio of monitoring Energy-aware link;

When the bandwidth availability ratio monitoring Energy-aware link is lower than green-threshold, Interior Gateway Protocol (IGP) routing database stored according to this locality and precedence information, judge the down hop of each route: judge that whether described down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; Wherein, each route described is do not comprise the route in the IGP routing database of the energy-conservation Energy-aware link of described hope;

If the down hop of the route Energy-aware link group interior joint that to be described hope energy-conservation, according to the IGP route data not comprising the energy-conservation Energy-aware link of described hope, re-starts router-level topology to each route described;

The message that the agreement that received energy sensing node sends is energy-conservation;

Judge that nodes all in described Energy-aware link group all have sent and agree to energy-conservation message;

If nodes all in described Energy-aware link group all have sent agree to energy-conservation message, send energy-conservation message to nodes all in described Energy-aware link group;

Energy-conservation according to described backup path.

The embodiment of the present invention additionally provides a kind of network energy-saving device, and described device comprises: monitoring means, the first transmitting element, the first judging unit, computing unit, the second judging unit, backup path unit, the second transmitting element, the first receiving element, power saving unit,

Described monitoring means, for monitoring the bandwidth availability ratio of Energy-aware link;

Described first transmitting element, for when the bandwidth availability ratio monitoring Energy-aware link is lower than green-threshold, according to the precedence information stored, send energy-conservation request to Energy-aware host node, described energy-conservation request at least comprises: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link;

Described first judging unit, for Interior Gateway Protocol (IGP) routing database stored according to this locality, the down hop of each route is judged: judge that whether described down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; Wherein, each route described is do not comprise the route in the IGP routing database of the energy-conservation Energy-aware link of described hope;

Described computing unit, if the Energy-aware link group interior joint at the Energy-aware link place that to be described hope energy-conservation of the down hop for route, according to the IGP route data not comprising the energy-conservation Energy-aware link of described hope, router-level topology is re-started to each route described;

Described second judging unit, for judging whether each route described all calculates the down hop made new advances;

Described backup path unit, if for all calculating the down hop made new advances, is stored into backup path by each new down hop;

For sending, described second transmitting element, agrees to that energy-conservation message is to described Energy-aware host node;

Described first receiving element, for the energy-conservation message that received energy perception host node sends;

Described power saving unit, for according to described backup path, starts energy-conservation.

The embodiment of the present invention additionally provides a kind of network energy-saving device, and described device comprises: the second monitoring means, the 4th judging unit, the second computing unit, 5th judging unit, the second backup path unit, the 3rd receiving element, 6th judging unit, the 4th transmitting element, and the second power saving unit;

Described second monitoring means, for monitoring the bandwidth availability ratio of Energy-aware link;

Described 4th judging unit, for when the bandwidth availability ratio monitoring Energy-aware link is lower than green-threshold, Interior Gateway Protocol (IGP) routing database stored according to this locality and precedence information, judge the down hop of each route: judge that whether described down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; Wherein, each route described is do not comprise the route in the IGP routing database of the energy-conservation Energy-aware link of described hope;

Described second computing unit, if be the energy-conservation Energy-aware link group interior joint of described hope for the down hop of route, according to the IGP route data not comprising the energy-conservation Energy-aware link of described hope, re-starts router-level topology to each route described;

Described 5th judging unit, for judging whether each route all calculates the down hop made new advances;

Described second backup path unit, if for all calculating the down hop made new advances, is stored into backup path by each new down hop;

Described 3rd receiving element, the message that the agreement for the transmission of received energy sensing node is energy-conservation;

Described 6th judging unit, agrees to energy-conservation message for judging that nodes all in described Energy-aware link group all have sent;

Described 4th transmitting element, agrees to energy-conservation message if all have sent for nodes all in described Energy-aware link group, sends energy-conservation message to nodes all in described Energy-aware link group;

Described second power saving unit, for energy-conservation according to described backup path.

As can be seen from the above technical solutions, the embodiment of the present invention is by the bandwidth availability ratio of monitoring Energy-aware link, when bandwidth availability ratio is lower than green-threshold, trigger whether carrying out energy-conservation judgement to Energy-aware link, when the down hop of route is the Energy-aware link group interior joint of wishing energy-conservation Energy-aware link place, according to not comprising the Interior Gateway Protocol (IGP wishing energy-conservation Energy-aware link, InteriorGateway Protocol) route data, carries out router-level topology; When the down hop in group all calculates the down hop made new advances, each new down hop is stored into backup path; After receiving the energy-conservation message that Energy-aware host node sends, perform energy-conservation, achieve energy-conservation to some links of network intelligence.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is Energy-aware link group simplified schematic diagram;

Fig. 2 is the method flow simplified schematic diagram of a kind of network energy-saving that the embodiment of the present invention one provides;

Fig. 3 is the method flow simplified schematic diagram of a kind of network energy-saving that the embodiment of the present invention two provides;

Fig. 4 is a kind of concrete energy information database schematic diagram;

Fig. 5 is the method flow simplified schematic diagram of a kind of network energy-saving that the embodiment of the present invention three provides;

Fig. 6 is the method flow simplified schematic diagram of a kind of network energy-saving that the embodiment of the present invention four provides;

Fig. 7 embodiment of the present invention five provides a kind of device simplified schematic diagram of network energy-saving;

Fig. 8 embodiment of the present invention six provides a kind of device simplified schematic diagram of network energy-saving.

Embodiment

The embodiment of the present invention provides a kind of method of network energy-saving, node and system, by configuration energy perception link group, when the bandwidth availability ratio of each Energy-aware node in group is lower than the green-threshold arranged, carries out energy-efficient treatment to each Energy-aware node in group.The program not only can realize carrying out in units of group energy-conservation, and in energy-conservation process, the message only diffusion in group of the transmission in group between each Energy-aware node, do not affect the equipment beyond Energy-aware link group in network, make network keep very high stability while energy-conservation, network concussion can not be produced.

Embodiment for a more clear understanding of the present invention, the technical name first related to the embodiment of the present invention carries out necessary explanation, as follows:

(1), Energy-aware link group can be understood as among a small circle (can be 3 to 4 node devices usually) can mutually between form the set of the link of redundancy protecting; as shown in Figure 1; the set of the link between node A, Node B, node C three; these three links of i.e. link AB, link AC, link BC can form an Energy-aware link group.In like manner, the set of the link between Node B, node D, node E three, i.e. link BD, these three links of link BE, link DE can form an Energy-aware link group.Wherein, Energy-aware link group specifically can be realized by administrator configurations.

(2), Energy-aware node can be understood as node (or being called equipment) in Energy-aware link group, if node A, Node B, node C are the Energy-aware nodes in same Energy-aware link group (that supposes this Energy-aware link group is numbered 1).

(3), Energy-aware host node can be understood as when administrator configurations Energy-aware link group, and also provided the priority of Energy-aware node, priority is high, can compete as Energy-aware host node.Wherein, competition mentioned here specifically can comprise: carry out spreading the precedence information knowing each node between each node in Energy-aware link group, in respective node, precedence information is analyzed, know the node of limit priority, therefore, judge that the node of this limit priority is Energy-aware host node.If keeper does not have configuration preference level, can be determined by the route identity (Route ID) comparing each node device between node, what Route ID was minimum can think Energy-aware host node.

Wherein, it is to be appreciated that each link only can belong to an Energy-aware link group; Different links on same equipment can belong to different Energy-aware link group; Same Energy-aware node, in different-energy perception link group, can configure different priority simultaneously, bear different roles.

After the title that understanding of above-mentioned explanation, in conjunction with following specific embodiment, illustrate the technical scheme that the embodiment of the present invention provides.

Embodiment one

Embodiments provide a kind of method of network energy-saving, as shown in Figure 2, the method comprises:

Step 201: the bandwidth availability ratio of monitoring Energy-aware link;

Wherein, nodes many in network layer is that the reliability redundancy in order to ensure network is arranged, when network non-busy when, the bandwidth availability ratio of most nodes is low-down, therefore, step 201 operation realizes the bandwidth availability ratio of each Energy-aware node monitors Energy-aware link, is convenient to subsequent triggers and performs power-save operation.Such as: the Energy-aware node A in the Energy-aware link group 1 in Fig. 1, the bandwidth availability ratio on link AB and link AC can be monitored; Energy-aware Node B in Energy-aware link group 1, can monitor the bandwidth availability ratio on link AB and link BC; The set of the link between Energy-aware link group 2(and Node B, node D, node E three) in Energy-aware Node B, the bandwidth availability ratio on link BD and link BE can be monitored; In like manner, other Energy-aware node has the ability of corresponding monitoring bandwidth.

Step 202: when the bandwidth availability ratio monitoring Energy-aware link is lower than green-threshold, according to the precedence information stored, energy-conservation request is sent to Energy-aware host node, this energy-conservation request at least comprises: wish energy-conservation Energy-aware link identity mark (ID, Identity) and the Energy-aware link group ID belonging to this link;

Wherein, when monitoring certain Energy-aware link, the bandwidth availability ratio of the link such as between node A and Node B is lower than after the energy-conservation threshold values arranged, two Energy-aware node A and B belonging to link send energy-conservation request to Energy-aware host node, notice and wish that energy-conservation Energy-aware link ID and Energy-aware link group ID(can adopt similar IGP to spread message called after LSA (LSA, and Link State view data cell (LSP Link-stateadvertisement), Link State PDU(Protocol DataUnit)) mode, increase energy-saving mark) simultaneously.

In one network, this topology of networks and relevant Link State is known in order to allow each node, current conventional mode is exactly need to set up IGP protocol neighbors between every two nodes, the link-state information of each network node collection oneself, then the neighbours of oneself are issued, diffusion needs relevant information to encapsulate by certain form, so that opposite end neighbours can be familiar with, current I GP agreement mainly contains two kinds, one is ospf (OSPF, Open Shortest Path First), existing standard is the message called after LSA (LSA of diffusion related link information, Link-stateadvertisement) message, one is Intermediate System-to-Intermediate System (ISIS, IntermediateSystem-to-Intermediate System), standard is the message called after LSP message of diffusion related link information, energy-conservation Energy-aware link ID and Energy-aware link group ID is spread for the present embodiment, the information such as energy-saving mark, because above-mentioned IGP flooding mechanism is very ripe, so the embodiment of the present invention can adopt similar mechanism to realize, diffusion relevant information.

It is also to be appreciated that, the precedence information stored in Energy-aware node can be before carrying out the method, node have received the configuration preference level of keeper, and each node communicates with between adjacent node, know the priority of each node, precedence information (can comprise: communicate between administration configuration and/or each node the priority known) is stored in this locality by the executive agent (i.e. energy sensing node) of the method.A kind of mode of concrete storage can be that precedence information is stored into energy information database.

Make Energy-aware node can know Energy-aware host node, by energy-conservation request method to Energy-aware host node by the precedence information stored.The node that usual priority is the highest is considered to Energy-aware host node.

Energy-aware host node is after receiving energy-conservation request, according to the Energy-aware link ID at least comprised in energy-conservation request and Energy-aware link group ID, be appreciated that the link required in energy-conservation group and this group, being convenient to Energy-aware host node, follow-up to be confirmed whether that links all in this group all requires energy-conservation, and wish the link of energy-conservation Energy-aware link when nodes all in this group can get a replacement, notify that each node performs energy-efficient treatment by Energy-aware host node.

Step 203: the IGP routing database stored according to this locality, judges the down hop of each route, judges that whether this down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of this hope; Wherein, this each route refers to the route do not comprised in the IGP routing database of wishing energy-conservation Energy-aware link;

It should be noted that, for step 203 judge to as if: the down hop not comprising each route in the IGP routing database of wishing energy-conservation Energy-aware link, follow-up energy-conservation operation is also only limitted to the process to the node in the energy-conservation perception link group at energy-conservation link place, do not relate to the node outside group, corresponding when follow-up execution is energy-conservation, the route outside energy-conservation perception link group can not be affected.

Step 204: if the Energy-aware link group interior joint at the down hop of the route Energy-aware link place that to be this hope energy-conservation, according to not comprising the IGP route data of wishing energy-conservation Energy-aware link, router-level topology is re-started to the route of each described in step 203;

It will be appreciated that, in step 204, said router-level topology refers to: node is according to the Routing Protocol of current configuration, such as OSPF, ISIS or Border Gateway Protocol (BGP), Border Gateway Protocol), then carry out calculation road according to the routing algorithm (having had relevant criterion to formulate) of Routing Protocol definition to each route.

Wherein, the thinking of this programme is: find to substitute in Energy-aware link group and wish energy-conservation perception link, therefore, be only limitted to recalculate route in Energy-aware link group, object is that find can after removing and wishing energy-conservation energy-conservation perception link, still can calculate the down hop route made new advances can reach with cancel wish energy-conservation energy-conservation perception link before identical destination.

Step 205: judge whether each route all calculates the down hop made new advances;

Wherein, the new down hop calculated in this step 205 can be identical with the down hop before calculating, also can be different.

Step 206: if all calculate the down hop made new advances, is stored into backup path by each new down hop;

For the ease of understanding step 206, can think when down hop in IGP routing database is the node in group, can calculate when making new advances down hop after recalculating, illustrate after eliminating and wishing energy-conservation Energy-aware link, new route can arrive with cancel wish energy-conservation Energy-aware link before identical destination.

Step 207: send and agree to that energy-conservation message is to Energy-aware host node;

Each node in group performs step 207, and namely each node sends and agrees to that energy-conservation message is to Energy-aware host node, and Energy-aware host node can send energy-conservation message to each node.Optionally, if there have node not agree to be energy-conservation, illustrating can not get a replacement in this node wishes energy-conservation Energy-aware link, therefore, can not realize energy-conservation.

Step 208: the energy-conservation message that received energy perception host node sends, according to the backup path stored, starts energy-conservation.

Wherein, starting energy-conservation concrete operations in a step 208 in each node can perform according to designing requirement, such as: node can be closed and be wished energy-conservation Energy-aware link, but is not restricted to the energy-conservation Energy-aware link of closedown hope.

By the explanation of the above-mentioned method to a kind of network energy-saving that the embodiment of the present invention provides, the method is by the bandwidth availability ratio of monitoring Energy-aware link, when bandwidth availability ratio is lower than green-threshold, trigger whether carrying out energy-conservation judgement to Energy-aware link, when the down hop of route is the Energy-aware link group interior joint of wishing energy-conservation Energy-aware link place, according to not comprising the IGP route data of wishing energy-conservation Energy-aware link, carry out router-level topology; When the down hop in group all calculates the down hop made new advances, each new down hop is stored into backup path; After receiving the energy-conservation message that Energy-aware host node sends, perform energy-conservation, achieve energy-conservation to some links of network intelligence.

Optionally, after step 202, before step 203, the method can also comprise:

Step 209: the energy-conservation differentiation message that received energy perception host node sends, triggers and performs step 203; Wherein, at least comprise in energy-conservation differentiation message: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link.

It should be noted that, when Energy-aware node monitors to the bandwidth availability ratio of Energy-aware link lower than green-threshold time, according to the precedence information stored, energy-conservation request is sent to Energy-aware host node, Energy-aware host node can receive the energy-conservation request that in group, multiple node sends in a period of time, can according to preset strategy in this host node, as: according to the energy-conservation request received at first, get and wish energy-conservation Energy-aware link identity mark (ID, Identity) the Energy-aware link group ID and belonging to this link, send energy-conservation differentiation message to nodes all in group, subsequent step 203 etc. is performed for initiating all nodes in group.

By increase step 209 make Energy-aware node can receive Energy-aware host node send energy-conservation differentiation message after, perform energy-conservation correlated judgment, make each Energy-aware node can accept the control of Energy-aware host node, orderly execution power-save operation can be unified.

Optionally, if the result judged in step 203 is negative, namely if not the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of this hope, do not process, terminate; Or if there is a node not agree to energy-conservation, host node will notify other interdependent nodes, cancels energy-conservation, other node just can be deleted the backup down hop calculated, and can save space.

In like manner, optionally, if the result judged in step 205 is negative, does not calculate if namely had the down hop that makes new advances, then do not allow energy-conservation, terminate;

Optionally, after step 208, described method can also comprise:

Step 210: send the energy-conservation message that completes to described Energy-aware host node.

By performing step 210, Energy-aware host node is made to know the energy-conservation executing state of each node in group.

Optionally, after step 208, described method can also comprise:

Step 211: after link failure being detected, sends the message of link failure to described Energy-aware host node.

Wherein, detect in node that the situation of link failure can specifically: this node does not receive signal by this link, and this node judges this link failure, but judges that the method for link failure is not limited to a kind of situation of current explanation.After breaking down, faulty link is informed to Energy-aware host node by this node, after Energy-aware host node receives the message of link failure, sends for notifying that all nodes stop energy-conservation message.

Step 212: received energy perception host node send for notifying that all nodes stop energy-conservation message, according to this message, terminate energy-conservation.

Making each node in the method link failure can be informed Energy-aware host node by increasing step 211,212, controlling each node by Energy-aware host node and terminating energy-conservation.

Embodiment two

Embodiments provide a kind of method of network energy-saving, the method is similar to the method that embodiment one provides, difference is, the method that the present embodiment provides is on the basis of embodiment one, add the technological means likely forming loop in the down hop avoiding recalculating in each node, namely judge that each new down hop wishes energy-conservation Energy-aware link group interior joint, the replacement link found is made to remain link in group, do not relate to group external equipment, the backup path comprising loop can not be formed.

Meanwhile, in the method, also add optional operation, as operation that administrative staff configure Energy-aware link group interior nodes, and in Energy-aware link group between each node communication know the operation etc. of information each other.

Illustrate shown in Figure 3, the method comprises:

Step 301: receive and configure Energy-saving Data, this Energy-saving Data at least comprises three: the Energy-aware link group information belonging to node, and node is at the precedence information of Energy-aware link group, and green-threshold numerical value;

Wherein, can be send to each node by administrative staff by long-range equipment to the configuration of node, make each node know the Energy-aware link group information that node belongs to, node be at the precedence information of Energy-aware link group, and green-threshold numerical value;

Step 302: with adjacent node communication, knows the precedence information of each node in Energy-aware link group information and Energy-aware link group;

Wherein, Energy-aware node and adjacent node carry out communication can adopt existing IGP, but be not limited to IGP, also can be other agreement, make each enabling communication between nodes, know the Energy-aware link group that each node belongs to and the precedence information of each node, be convenient to follow-up each node and can know Energy-aware host node (node that the level that usually can give priority to is the highest is Energy-aware host node).

Step 303: store the Energy-aware link group information and precedence information known:

Wherein, for the ease of understanding, illustrate the form of a kind of concrete stored energy perception link group information and precedence information, as shown in Figure 4, a concrete energy information database schematic diagram, also stores the information such as the attribute of Energy-aware link ID and Energy-aware link group ID in this database, as: the priority of Energy-aware link group, and the green-threshold of Energy-aware link, consumption information etc.Energy information database shown in Fig. 4 is only the one citing for the ease of understanding the embodiment of the present invention, the restriction not to the embodiment of the present invention.

Step 304: the bandwidth availability ratio of monitoring Energy-aware link;

Step 305: when the bandwidth availability ratio monitoring Energy-aware link is lower than green-threshold, according to the precedence information stored, energy-conservation request is sent to Energy-aware host node, this energy-conservation request at least comprises: wish energy-conservation Energy-aware link identity mark (ID, Identity) and the Energy-aware link group ID belonging to this link;

Step 306: the IGP routing database stored according to this locality, the down hop of each route do not comprised in the IGP routing database of wishing energy-conservation Energy-aware link is judged, judges that whether this down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of this hope;

Step 307: if the Energy-aware link group interior joint at the down hop of the route Energy-aware link place that to be this hope energy-conservation, according to not comprising the IGP route data of wishing energy-conservation Energy-aware link, carry out router-level topology;

Step 308: judge whether all calculate the down hop made new advances in the route calculated;

Step 309: if all calculate the down hop made new advances, judges that whether each new down hop is the energy-conservation Energy-aware link group interior joint of described hope;

Step 310: if each new down hop Energy-aware link group interior joint that to be described hope energy-conservation, each new down hop is stored into backup path;

Wherein, if judge in the step 310, the down hop made new advances is the Energy-aware link group interior joint of wishing energy-conservation Energy-aware link place, executive agent (i.e. energy sensing node) then for the method judges to carry out energy-conservation to the Energy-aware link that hope is energy-conservation, and in Energy-aware link group, having have found the energy-conservation Energy-aware link of alternative hope, alternate link can arrive path, identical destination.And, make this power-save operation be only limitted to carry out in this Energy-aware link group, the outside miscellaneous equipment of Energy-aware link group can not be notified, in group, find alternate link, this alternate link route arrives the destination identical with wishing energy-conservation link, and can not form the backup path comprising loop.

Be appreciated that energy-conservation perception link group is a closed network, for each route in each node in this network, a fringe node must be had to learn from encapsulation network, if so each route finally in encapsulation network can calculate down hop, necessarily finally can go to this fringe node, after arriving this limit fringe node, down hop must be outside close network, by our algorithm, this route just no longer calculates, so it is outer just directly to go to close network, so certainly would not loop, do not have energy-conservation is exactly walk so before before, and not energy-conservation before can not loop, and the Routing Protocol algorithm in existing calculating can ensure.

Step 311: send and agree to that energy-conservation message is to Energy-aware host node;

Step 312: the energy-conservation message that received energy perception host node sends, according to the backup path stored, starts energy-conservation.

Step 313: send the energy-conservation message that completes to described Energy-aware host node.

By the explanation of the above-mentioned method to a kind of network energy-saving that the embodiment of the present invention provides, the method is by the bandwidth availability ratio of monitoring Energy-aware link, when bandwidth availability ratio is lower than green-threshold, trigger whether carrying out energy-conservation judgement to Energy-aware link, when the down hop of route is the Energy-aware group interior joint of wishing energy-conservation Energy-aware link place, according to not comprising the IGP route data of wishing energy-conservation Energy-aware link, carry out router-level topology; When the down hop in group all calculates the down hop made new advances, and new down hop is all the Energy-aware link group interior joint of wishing energy-conservation Energy-aware link place; Each new down hop is stored into backup path; After receiving the energy-conservation message that Energy-aware host node sends, perform energy-conservation, achieve energy-conservation to some links of network intelligence, and can not loop be formed, do not affect normal Internet Transmission.

Embodiment three

The embodiment of the present invention provides a kind of method of network energy-saving, the method is similar to the method that embodiment one provides, difference part is, executive agent in embodiment one is the relatively low node of Energy-aware link in-group priority, need the control receiving the higher node (as Energy-aware host node) of priority, what exemplify in the present embodiment is the network energy-saving method of Energy-aware host node as executive agent.Shown in Figure 5, the method comprises:

Step 501: the bandwidth availability ratio of monitoring Energy-aware link;

Step 502: when the bandwidth availability ratio monitoring Energy-aware link is lower than green-threshold, Interior Gateway Protocol (IGP) routing database stored according to this locality and precedence information, judge the down hop of each route: judge that whether described down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; Wherein, each route described is do not comprise the route in the IGP routing database of the energy-conservation Energy-aware link of described hope;

Step 503: if the down hop of the route Energy-aware link group interior joint that to be described hope energy-conservation, according to the IGP route data not comprising the energy-conservation Energy-aware link of described hope, router-level topology is re-started to each route;

Step 504: judge whether each route all calculates the down hop made new advances;

Step 505: if all calculate the down hop made new advances, is stored into backup path by each new down hop;

Above-mentioned steps 501 to step 505 illustrate can be corresponding in step 201, step 203 to step 206 in reference example one explanation.

Step 506: the message that the agreement that received energy sensing node sends is energy-conservation;

Step 507: judge that nodes all in described Energy-aware link group all have sent and agree to energy-conservation message;

Step 508: if nodes all in Energy-aware link group all have sent agree to energy-conservation message, send energy-conservation message to nodes all in described Energy-aware link group;

By performing above-mentioned steps 506 to step 508, making Energy-aware host node after knowing that all nodes in Energy-aware link group all find and can substitute and wish energy-conservation Energy-aware link, notifying that each node can carry out energy-conservation.

Step 509: according to described backup path, starts energy-conservation.

By the explanation of the above-mentioned method to a kind of network energy-saving that the embodiment of the present invention provides, the method is by the bandwidth availability ratio of monitoring Energy-aware link, when bandwidth availability ratio is lower than green-threshold, trigger whether carrying out energy-conservation judgement to Energy-aware link, when the down hop of route is the Energy-aware link group interior joint of wishing energy-conservation Energy-aware link place, according to not comprising the IGP route data of wishing energy-conservation Energy-aware link, carry out router-level topology; When the down hop in group all calculates the down hop made new advances, each new down hop is stored into backup path; When Energy-aware host node is after knowing that all nodes in Energy-aware link group all find and can substitute and wish energy-conservation Energy-aware link, notify each node host node self perform energy-conservation, achieve energy-conservation to some links of network intelligence.

Optionally, after step 504, the method also comprises:

Step 510: if all calculate the down hop made new advances, judges that whether each new down hop is the energy-conservation Energy-aware link group interior joint of described hope;

Step 511: if each new down hop Energy-aware link group interior joint that to be described hope energy-conservation, trigger to perform in step 505 and each new down hop is stored into backup path.

By increasing step 510 and step 511, when judging that the down hop made new advances is the Energy-aware link group interior joint of wishing energy-conservation Energy-aware link place, executive agent (i.e. energy sensing node) then for the method judges to carry out energy-conservation to the Energy-aware link that hope is energy-conservation, and in Energy-aware link group, having have found the energy-conservation Energy-aware link of alternative hope, alternate link can arrive path, identical destination.And, make this power-save operation be only limitted to carry out in this Energy-aware link group, the outside miscellaneous equipment of Energy-aware link group can not be notified, in group, find alternate link, this link route arrives the destination identical with wishing energy-conservation link, and can not form the backup path comprising loop.

Optionally, after step 501, before step 502, the method also comprises:

Step 512: the energy-conservation request that received energy sensing node sends, energy-conservation request at least comprises: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to link;

Step 513: according to energy-conservation request, sends energy-conservation differentiation message to nodes all in Energy-aware link group, at least comprises in energy-conservation differentiation message: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to link.

Wherein, for Energy-aware host node after receiving energy-conservation request, it can be the energy-conservation request according to receiving at first, send energy-conservation differentiation message to each node, wherein, the Energy-aware link identity mark that the hope that energy-conservation differentiation message comprises is energy-conservation and Energy-aware link group identify label belonging to link, the Energy-aware link identity energy-conservation with sending hope that energy-conservation request comprises at first identifies identical with the Energy-aware link group identify label belonging to link.It is to be appreciated that trigger the mode that the mechanism sending energy-conservation differentiation message is not limited to current citing in Energy-aware host node, also can be that alternate manner triggers, should not be construed the restriction to the embodiment of the present invention herein.

By increasing step 512 and step 513, making each Energy-aware node can accept the control of Energy-aware host node, orderly execution power-save operation can be unified.

Embodiment four

Embodiments provide a kind of method of network energy-saving, the method and above-described embodiment one, two, three are all open one's minds based on identical, but above embodiment is all the explanation from one-sided manner of execution, such as: only from Energy-aware node, or only from the one-sided illustration method of Energy-aware host node, understanding to be more convenient in the present embodiment four, in conjunction with Energy-aware node and Energy-aware host node two executive agents, the method being described in detail.Specifically shown in Figure 6, the method comprises:

Step 601: the bandwidth availability ratio of each node monitors Energy-aware link in Energy-aware link group;

Wherein, the said each node of step 601 comprises host node and Energy-aware node in Energy-aware link group.

Step 602a: when the bandwidth availability ratio monitoring Energy-aware link is lower than green-threshold, Energy-aware node is according to the precedence information stored, energy-conservation request is sent to Energy-aware host node, this energy-conservation request at least comprises: wish energy-conservation Energy-aware link identity mark (ID, Identity) and the Energy-aware link group ID belonging to this link;

Step 603b: the energy-conservation request that Energy-aware host node received energy sensing node sends, according to energy-conservation request, send energy-conservation differentiation message to nodes all in Energy-aware link group, at least comprise in energy-conservation differentiation message: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to link;

Wherein, the energy-conservation differentiation message that Energy-aware host node sends can trigger according to the energy-conservation request received at first, the Energy-aware link identity mark that the relevant hope that this energy-conservation differentiation message comprises is energy-conservation and the Energy-aware link group identify label belonging to link can be identical with the energy-conservation request received at first.

Step 604b: in Energy-aware host node when the bandwidth availability ratio monitoring Energy-aware link is lower than green-threshold, Interior Gateway Protocol (IGP) routing database stored according to this locality and precedence information, judge the down hop of each route: judge that whether described down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; Wherein, each route described is do not comprise the route in the IGP routing database of the energy-conservation Energy-aware link of described hope;

Step 605b: Energy-aware host node judges if the down hop of the route Energy-aware link group interior joint that to be described hope energy-conservation, according to the IGP route data not comprising the energy-conservation Energy-aware link of described hope, router-level topology is re-started to each route;

Step 606b: Energy-aware host node judges whether each route all calculates the down hop made new advances;

Step 607b: Energy-aware host node judges that each route all calculates the down hop made new advances, further, judges that whether each new down hop is the energy-conservation Energy-aware link group interior joint of described hope;

Step 608b: Energy-aware host node judges that each new down hop is the energy-conservation Energy-aware link group interior joint of described hope, and each new down hop is stored into backup path;

Step 609a: the energy-conservation differentiation message that Energy-aware node received energy perception host node sends, triggers and performs step 610a;

Step 610a: the IGP routing database that Energy-aware node stores according to this locality, judges the down hop of each route: judge that whether described down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; Wherein, each route described is do not comprise the route in the IGP routing database of the energy-conservation Energy-aware link of described hope;

Step 611a: if the Energy-aware link group interior joint at the down hop of the Energy-aware node route Energy-aware link place that to be this hope energy-conservation, according to not comprising the IGP route data of wishing energy-conservation Energy-aware link, router-level topology is re-started to each route;

Step 612a: Energy-aware node judges whether each route all calculates the down hop made new advances;

Step 613a: in the route of Energy-aware node calculate, if calculate the down hop made new advances, further, judges whether each new down hop is wish energy-conservation Energy-aware link group interior joint;

Step 614a: Energy-aware node judges that each new down hop is the energy-conservation Energy-aware link group interior joint of described hope, then each new down hop is stored into backup path.

Step 615a: Energy-aware node sends agrees to that energy-conservation message is to Energy-aware host node;

Step 616b: the message that the agreement that Energy-aware host node received energy sensing node sends is energy-conservation;

Step 617b: Energy-aware host node judges that nodes all in described Energy-aware link group all have sent and agrees to energy-conservation message;

Step 618b: if Energy-aware host node judges that in Energy-aware link group, all nodes all have sent the energy-conservation message of agreement, send energy-conservation message to nodes all in described Energy-aware link group;

Step 619b: Energy-aware host node, according to backup path, starts energy-conservation.

Step 620a: the energy-conservation message that Energy-aware node received energy perception host node sends, according to the backup path stored, starts energy-conservation.

Step 621a: Energy-aware node sends the energy-conservation message that completes to described Energy-aware host node.

Also it should be noted that, it is current in Fig. 6 that what only illustrate is the situation having an ordinary node (ordinary node refers to the node that priority is lower) in Energy-aware link group here, if include the situation of multiple ordinary node in Energy-aware link group, the operation in each ordinary node is identical with the situation of an ordinary node of current explanation.

Embodiment five

Embodiments provide a kind of device of network energy-saving, as shown in Figure 7, this device comprises: monitoring means 701, the first transmitting element 702, first judging unit 703, computing unit 704, the second judging unit 705, backup path unit 706, second transmitting element 707, first receiving element 708, and power saving unit 709

Monitoring means 701, for monitoring the bandwidth availability ratio of Energy-aware link;

First transmitting element 702, for when the bandwidth availability ratio monitoring Energy-aware link is lower than green-threshold, according to the precedence information stored, send energy-conservation request to Energy-aware host node, described energy-conservation request at least comprises: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link;

First judging unit 703, for Interior Gateway Protocol (IGP) routing database stored according to this locality, the down hop of each route is judged: judge that whether described down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; Wherein, each route described is do not comprise the route in the IGP routing database of the energy-conservation Energy-aware link of described hope;

Computing unit 704, if the Energy-aware link group interior joint at the Energy-aware link place that to be described hope energy-conservation of the down hop for route, according to the IGP route data not comprising the energy-conservation Energy-aware link of described hope, router-level topology is re-started to each route described;

Second judging unit 705, for judging whether each route described all calculates the down hop made new advances;

Backup path unit 706, if for all calculating the down hop made new advances, is stored into backup path by each new down hop;

For sending, second transmitting element 707, agrees to that energy-conservation message is to described Energy-aware host node;

First receiving element 708, for the energy-conservation message that received energy perception host node sends;

Power saving unit 709, for according to described backup path, starts energy-conservation.

By the explanation of the above-mentioned device to a kind of network energy-saving that the embodiment of the present invention provides, this device is by the bandwidth availability ratio of monitoring means monitoring Energy-aware link, when bandwidth availability ratio is lower than green-threshold, trigger whether carrying out energy-conservation judgement to Energy-aware link, when the down hop of route is the Energy-aware link group interior joint of wishing energy-conservation Energy-aware link place, according to not comprising the IGP route data of wishing energy-conservation Energy-aware link, carry out router-level topology; When the down hop in group all calculates the down hop made new advances, each new down hop is stored into backup path; After receiving the energy-conservation message that Energy-aware host node sends, perform energy-conservation, achieve energy-conservation to some links of network intelligence.

Optionally, this device also comprises: the 3rd judging unit 710,

3rd judging unit 710, for judging that whether each new down hop is the energy-conservation Energy-aware link group interior joint of described hope; If each new down hop Energy-aware link group interior joint that to be described hope energy-conservation, notifies described backup path unit.

By increasing by the 3rd judging unit 710, this energy saver can be judged, and each new down hop wishes energy-conservation Energy-aware link group interior joint, the replacement link found remains the link in group, does not relate to group external equipment, can not form the backup path comprising loop.

Optionally, this device can also comprise: the second receiving element 711,

Second receiving element 711, for the energy-conservation differentiation message that received energy perception host node sends, trigger described first judging unit and perform and describedly judge that whether described down hop is the operation of the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; Wherein, at least comprise in energy-conservation differentiation message: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link.

By increasing by the second receiving element 711, make Energy-aware node can receive Energy-aware host node send energy-conservation differentiation message after, perform energy-conservation correlated judgment, make each Energy-aware node can accept the control of Energy-aware host node, orderly execution power-save operation can be unified.

Optionally, this device can also comprise: communication unit 712, and memory cell 713;

Described communication unit 712, for communicating with adjacent node, thus knows the precedence information of Energy-aware link group information and group interior nodes;

Described memory cell 713, for storing the identify label of Energy-aware link group and precedence information known.

Wherein, described communication unit 712 carries out communication with adjacent node and can adopt existing IGP, but be not limited to IGP, also can be other agreement, make each enabling communication between nodes, know the Energy-aware link group that each node belongs to and the precedence information of each node, be convenient to follow-up each node and can know Energy-aware host node (node that the level that usually can give priority to is the highest is Energy-aware host node).

By increasing above-mentioned communication unit 712, and memory cell 713 makes Energy-aware node can know the situation of each node in Energy-aware link group, as precedence information etc.

Optionally, this device can also comprise:

Dispensing unit 714, for configuring Energy-saving Data, described Energy-saving Data at least comprises three: the Energy-aware link group information belonging to node, node is at the precedence information of Energy-aware link group, and green-threshold numerical value.

By increasing dispensing unit 714, make the setting that network manager can realize the network equipment, the follow-up execution energy-efficient treatment of equipment of being convenient to.

Optionally, this device can also comprise:

3rd transmitting element 715, for sending the energy-conservation message that completes to described Energy-aware host node.

By increasing by the 3rd transmitting element 715, host node is made to know energy-efficient treatment situation in each node.

Embodiment six

Embodiments provide a kind of device of network energy-saving, as shown in Figure 8, this device comprises:

Second monitoring means the 801, four judging unit 802, second computing unit the 803, five judging unit 804, second backup path unit the 805, three receiving element the 806, six judging unit the 807, four transmitting element 808, and the second power saving unit 809;

Second monitoring means 801, for monitoring the bandwidth availability ratio of Energy-aware link;

4th judging unit 802, for when the bandwidth availability ratio monitoring Energy-aware link is lower than green-threshold, Interior Gateway Protocol (IGP) routing database stored according to this locality and precedence information, judge the down hop of each route: judge that whether described down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; Wherein, each route described is do not comprise the route in the IGP routing database of the energy-conservation Energy-aware link of described hope;

Second computing unit 803, if be the energy-conservation Energy-aware link group interior joint of described hope for the down hop of route, according to the IGP route data not comprising the energy-conservation Energy-aware link of described hope, re-starts router-level topology to each route described;

5th judging unit 804, for judging whether each route all calculates the down hop made new advances;

Second backup path unit 805, if for all calculating the down hop made new advances, is stored into backup path by each new down hop;

3rd receiving element 806, the message that the agreement for the transmission of received energy sensing node is energy-conservation;

6th judging unit 807, agrees to energy-conservation message for judging that nodes all in described Energy-aware link group all have sent;

4th transmitting element 808, agrees to energy-conservation message if all have sent for nodes all in described Energy-aware link group, sends energy-conservation message to nodes all in described Energy-aware link group;

Second power saving unit 809, for energy-conservation according to described backup path.

By the above-mentioned explanation to a kind of network energy-saving device that the embodiment of the present invention provides, this device is by the bandwidth availability ratio of the second monitoring means monitoring Energy-aware link, when bandwidth availability ratio is lower than green-threshold, trigger whether carrying out energy-conservation judgement to Energy-aware link, when the down hop of route is the Energy-aware link group interior joint of wishing energy-conservation Energy-aware link place, according to not comprising the IGP route data of wishing energy-conservation Energy-aware link, carry out router-level topology; When the down hop in group all calculates the down hop made new advances, each new down hop is stored into backup path; When Energy-aware host node is after knowing that all nodes in Energy-aware link group all find and can substitute and wish energy-conservation Energy-aware link, notify each node host node self perform energy-conservation, achieve energy-conservation to some links of network intelligence.

Optionally, this device also comprises:

6th judging unit 810, if for all calculate the down hop that makes new advances it, judge that whether each new down hop is the energy-conservation Energy-aware link group interior joint of described hope; If each new down hop Energy-aware link group interior joint that to be described hope energy-conservation, notifies that each new down hop is stored into backup path by described second backup path unit.

By increasing by the 6th judging unit 810, when judging that the down hop made new advances is the Energy-aware link group interior joint of wishing energy-conservation Energy-aware link place, then judge to carry out energy-conservation to the Energy-aware link that hope is energy-conservation, and in Energy-aware link group, having have found the energy-conservation Energy-aware link of alternative hope, alternate link can arrive path, identical destination.And, make this power-save operation be only limitted to carry out in this Energy-aware link group, the outside miscellaneous equipment of Energy-aware link group can not be notified, in group, find alternate link and, this link route arrives the destination identical with wishing energy-conservation link, and can not form the backup path comprising loop.

Optionally, this device also comprises: the 4th receiving element 811, and the 5th transmitting element 812,

Described 4th receiving element 811, for receiving the energy-conservation request that described Energy-aware node sends, described energy-conservation request at least comprises: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link;

Described 5th transmitting element 812, for according to described energy-conservation request, send energy-conservation differentiation message to all nodes in described Energy-aware link group, at least comprise in described energy-conservation differentiation message: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link.

By increasing by the 4th receiving element 811, with the 5th transmitting element 812, making Energy-aware host node to start to perform energy-conservation differentiation process by each node in control group, orderly execution power-save operation can be unified.

Finally, also it should be noted that, the bright explanation that also can be relevant in reference method embodiment one, two, three, four of more speaking more of the network energy-saving that above-described embodiment five, six illustrates, does not repeat in device embodiment five, six.

One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.

Above the method and apparatus of a kind of network energy-saving provided by the present invention is described in detail, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims

1. a method for network energy-saving, is characterized in that, described method comprises:

The bandwidth availability ratio of monitoring Energy-aware link;

2. method according to claim 1, is characterized in that, after all calculating if described the down hop made new advances, described method also comprises:

Judge that whether each new down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope;

If the Energy-aware link group interior joint at each new down hop Energy-aware link place that to be described hope energy-conservation, perform and described each new down hop is stored into backup path.

3. method according to claim 1, it is characterized in that, described to after Energy-aware host node sends energy-conservation request, described judge that whether described down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope before, described method also comprises:

The energy-conservation differentiation message that received energy perception host node sends, triggers to perform and describedly judges that whether described down hop is the operation of the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope;

At least comprise in described energy-conservation differentiation message: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link.

4. method according to claim 2, is characterized in that, described method also comprises:

If down hop judges it is not the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope, then terminate; Wherein, described down hop is the down hop of route in the IGP routing database not comprising the energy-conservation Energy-aware link of described hope;

Or, if there is the down hop not calculating and make new advances, then can not be energy-conservation, terminate;

Or, if there is new down hop not to be the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope, then can not be energy-conservation, terminate.

5. the method according to any one of Claims 1-4, is characterized in that, before the bandwidth availability ratio of described monitoring Energy-aware link, described method also comprises:

Communicate with adjacent node, thus know the precedence information of Energy-aware link group information and group interior nodes;

Store the identify label of Energy-aware link group and precedence information known.

6. the method according to any one of Claims 1-4, is characterized in that, described method also comprises:

Configuration Energy-saving Data, described Energy-saving Data at least comprises three: the Energy-aware link group information belonging to node, node is at the precedence information of Energy-aware link group, and green-threshold numerical value.

7. the method according to any one of Claims 1-4, is characterized in that, described according to described backup path, start energy-conservation after, described method also comprises:

Send the energy-conservation message that completes to described Energy-aware host node.

8. a method for network energy-saving, is characterized in that, described method comprises:

The bandwidth availability ratio of monitoring Energy-aware link;

Judge whether nodes all in described Energy-aware link group all have sent and agree to energy-conservation message;

Energy-conservation according to described backup path.

9. method according to claim 8, is characterized in that, after all calculating if described the down hop made new advances, described method also comprises:

10. the method described according to Claim 8 or 9 any one, it is characterized in that, after the bandwidth availability ratio of described monitoring Energy-aware link, described judge that whether described down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope before, described method also comprises:

Receive the energy-conservation request that described Energy-aware node sends, described energy-conservation request at least comprises: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link;

According to described energy-conservation request, send energy-conservation differentiation message to all nodes in described Energy-aware link group, at least comprise in described energy-conservation differentiation message: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link.

11. 1 kinds of network energy-saving devices, is characterized in that, described device comprises: monitoring means, the first transmitting element, the first judging unit, computing unit, the second judging unit, backup path unit, the second transmitting element, the first receiving element, power saving unit,

12. devices according to claim 11, is characterized in that, described device also comprises: the 3rd judging unit,

Described 3rd judging unit, for judging that whether each new down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; If the Energy-aware link group interior joint at each new down hop Energy-aware link place that to be described hope energy-conservation, notifies described backup path unit.

13. devices according to claim 11, is characterized in that, described device also comprises: the second receiving element,

Described second receiving element, for the energy-conservation differentiation message that received energy perception host node sends, trigger described first judging unit and perform and describedly judge that whether described down hop is the operation of the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope;

14., according to claim 11 to the device described in 13 any one, is characterized in that, described device also comprises: communication unit, and memory cell;

Described communication unit, for communicating with adjacent node, thus knows the precedence information of Energy-aware link group information and group interior nodes;

Described memory cell, for storing the identify label of Energy-aware link group and precedence information known.

15. according to claim 11 to the device described in 13 any one, it is characterized in that, described device also comprises: dispensing unit, for configuring Energy-saving Data, described Energy-saving Data at least comprises three: the Energy-aware link group information belonging to node, node is at the precedence information of Energy-aware link group, and green-threshold numerical value.

16., according to claim 11 to the device described in 13 any one, is characterized in that, described device also comprises:

3rd transmitting element, for sending the energy-conservation message that completes to described Energy-aware host node.

17. 1 kinds of network energy-saving devices, is characterized in that, described device comprises: the second monitoring means, the 4th judging unit, second computing unit, the 5th judging unit, the second backup path unit, the 3rd receiving element, 6th judging unit, the 4th transmitting element, and the second power saving unit;

Described second computing unit, if the Energy-aware link group interior joint at the Energy-aware link place that to be described hope energy-conservation of the down hop for route, according to the IGP route data not comprising the energy-conservation Energy-aware link of described hope, router-level topology is re-started to each route described;

Described 6th judging unit, agrees to energy-conservation message for judging whether nodes all in described Energy-aware link group all have sent;

18. devices according to claim 17, is characterized in that, described device also comprises:

7th judging unit, if for all calculating the down hop made new advances, judges that whether each new down hop is the Energy-aware link group interior joint at the energy-conservation Energy-aware link place of described hope; If the Energy-aware link group interior joint at each new down hop Energy-aware link place that to be described hope energy-conservation, notifies that each new down hop is stored into backup path by described second backup path unit.

19. devices according to any one of claim 17 or 18, it is characterized in that, described device also comprises: the 4th receiving element, and the 5th transmitting element,

Described 4th receiving element, for receiving the energy-conservation request that described Energy-aware node sends, described energy-conservation request at least comprises: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link;

Described 5th transmitting element, for according to described energy-conservation request, send energy-conservation differentiation message to all nodes in described Energy-aware link group, at least comprise in described energy-conservation differentiation message: wish energy-conservation Energy-aware link identity mark and the Energy-aware link group identify label belonging to described link.