CN107396433A - WLAN energy-saving method and STA based on NDN frameworks - Google Patents
WLAN energy-saving method and STA based on NDN frameworks Download PDFInfo
- Publication number
- CN107396433A CN107396433A CN201710642099.9A CN201710642099A CN107396433A CN 107396433 A CN107396433 A CN 107396433A CN 201710642099 A CN201710642099 A CN 201710642099A CN 107396433 A CN107396433 A CN 107396433A
- Authority
- CN
- China
- Prior art keywords
- sta
- states
- pit
- doze
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to wireless local area network technology field, discloses a kind of WLAN energy-saving method and STA based on NDN frameworks, to combine the energy consumption that STA is further reduced the characteristics of NDN networks.The inventive method includes:It is five kinds of states by the PSM mode divisions between the STA and AP of NDN networks, is respectively:Deep Doze states, Light Doze states, Idle Listening states, Tx states and Rx states;TIM information transmitted by each STA combinations Beacon cycles, local PIT tables and corresponding AP switches between five kinds of states.
Description
Technical field
The present invention relates to wireless local area network technology field, more particularly to a kind of WLAN energy-saving based on NDN frameworks
Method and STA (Station, standing).
Background technology
Current wireless Local Area Network due to its relatively low installation cost and simple accessibility, be widely deployed in office or
Public domain, it provide the user great convenience.Simultaneously as the development of embedded technology and new electronic product, movement are set
The standby and rapid popularization of wearable device, the mode that they access internet also more have selected Wi-Fi network so that Wi-
Fi networks have become the emphasis of people's research.However, as mobile terminal is quickly grown, WLAN also spreads all over the world,
And the energy source of current mobile device is still battery.With becoming stronger day by day for mobile terminal function, energy expenditure is also corresponding
Increase, but hardware advances are still limited, battery capacity is gradually difficult to the energy expenditure for meeting mobile terminal, and energy is to restrict nothing
One of main factor of line network Development, therefore the mobile terminal power consumption issues under wireless network are urgently to be resolved hurrily.
The energy-conservation of WLAN is more the research in MAC layer, wherein in energy saver mode (Power Saving
Mode, PSM) on the basis of to optimize and improve be important direction.IEEE 802.11 energy saver mode basic thought is:
AP (Access Point, access point) caches downlink data, is actively asked only after node dormancy terminates to AP, and AP is just carried out
The feedback of downlink data.However, IEEE 802.11 based on TCP/IP end to end communication mechanism, it is necessary to keep the both ends that communicate
Connectivity, can not pre- primary data when return, it is necessary to intercept channel always, cause wireless terminal can not be efficiently entering PSM
Pattern.Here a problem is there are in fact, i.e. node is not known on AP either with or without the data cached of oneself;Therefore actual thinking should
This is that periodically to corresponding node, it broadcasts buffer area situation, such as the TIM by being carried in Beacon (beacon) frame to AP
(Traffic Indication Map, Traffic Indication Map) field, and identify and have the slow of broadcast data packet in AP, so as to node
It is known that whether oneself is by data buffer storage;After dormancy terminates, request of data will be carried out by being buffered the node of data, instead
Continue to dormancy.
On the other hand, the work for how reducing IL (Idle Listening, the idle listening) times is directed in existing research
Also there are a lot, time and listening interval (Listening Interval, LI) due to the Idle Listening of PSM mechanism
There is substantial connection, the Idle times can be reduced to a certain extent by adjusting LI cycle, increase dormancy time.
In addition, wireless terminal reception will be caused to its data are not belonging to by multicast distribution data, although the data meeting
It is dropped, but needs wireless terminal to wake up reception from resting state and be not belonging to its data, will so wastes unnecessary energy consumption.
Wireless terminal energy consumption saving is also faced in wireless NDN (Named Data Networking, naming data network) network to ask
Topic.Due to NDN natural support multicast mechanisms, distribute data with the forms of broadcasting under wireless environment, serious terminal energy will be caused
Consumption wastes.
NDN, to name data to substitute IP, is directly carried out as a kind of Future Internet framework of revolution formula with content name
Route, data transfer use " issue-request-response " pattern, realize point-to-multipoint efficient content distribution.NDN routing mechanisms
On remain the converting routes (Forwarding Information Base, FIB) of similar IP routes, add pending
Required list (Pending Interest Table, PIT) and content caching (Content Store, CS) data structure, FIB
For matching suitable forwarding interface, CS is used for the caching of content, and PIT retains received request bag, when with some in PIT
When packet is beamed back corresponding to request, corresponding interface will be passed to.NDN using it is similar with IP based on be stored in FIB with
The longest prefix match forwarding of information in PIT.NDN not only avoids network conflict and congestion in principle, has broken away from transmission
Dependence to end to end connection, multilink route is realized, while be based on caching in network to realize acquisition nearby, load and put down
Weighing apparatus, so as to substantially increase the performance of extensive content distribution, efficiency and reliability.
In NDN networks, on STA PSM patterns, there is presently no clear and definite definition.If with reference to existing
Some opinions in IEEE802.11 agreements, because it define only dormancy, free time, send and receive four kinds of states, except above-mentioned
Outside the problem of broadcast energy consumption faced is big, in actual motion, corresponding STA is in idle condition mostly, and idle condition phase
More power consumptions can be also produced than resting state, it is thus possible to which further improved;Meanwhile STA needs from resting state wake-up
Multiple Beacon cycles are wanted, thus can cause data return latency.
To solve wireless terminal energy consumption problem, the present invention proposes a kind of WLAN energy-saving method based on NDN frameworks,
Using NDN characteristics, design and be adapted to wireless NDN network energy-saving methods.Because NDN network nodes maintain PIT and FIB information, lead to
The PIT information for crossing acquisition present node would know that whether need request data in network, and reasonably be stopped with reference to TIM information
Sleep and dispatch so that wireless terminal enters resting state as far as possible, but keeps relatively low data delay simultaneously.
The content of the invention
Present invention aims at a kind of WLAN energy-saving method and STA based on NDN frameworks is disclosed, with reference to NDN
The characteristics of network, further reduces STA energy consumption.
To achieve the above object, the invention discloses a kind of WLAN energy-saving method based on NDN frameworks, including:
It is five kinds of states by the PSM mode divisions between the STA and AP of NDN networks, is respectively:Deep Doze (stop by depth
Sleep) state, Light Doze (shallow dormancy) state, Idle Listening (free time) state, Tx (Transmitting, transmission)
State and Rx (Receiving, receive) state;
TIM information transmitted by each STA combinations Beacon cycles, local PIT tables and corresponding AP is at described five kinds
Switched between state, specific switching includes:
STA creates Interest, and whether in local CS have corresponding Interest data, if so, then returning if checking
Return data;If not provided, the prefix of the Interest and corresponding interface are established into a new entry increases in PIT tables,
Then Interest to corresponding AP is sent;Now, the PIT=1 of the STA, STA enter Light Doze states;
When the STA is in Light Doze, whether the TIM transmitted by the corresponding AP of each wake-up period inspection in setting
There is data return;If TIM=0, data are represented also without AP is returned, STA continues in Light Doze states;If PIT=1
And TIM=1, represent that data have returned to AP, then STA switches to Idle Listening states;
When in Idle Listening states, the channel between the STA competitions and corresponding AP, if do not competed
Channel, then switch to Light Doze states;If channel, conversion to Tx states are arrived in competition;
When in Tx states, the STA is to corresponding AP request datas, and after all data have been received, checking again for PIT is
No is 0, if PIT=0, into Deep Doze states;If PIT=1 and TIM=0, into Light Doze states;
When in Deep Doze states, the wake-up period of default setting is integer more than Beacon cycle at least twice
Times, and be waken up when needing and sending Interest;When in Light Doze states, the wake-up period of setting is described
The integral multiple in Beacon cycles;And the STA corresponds to the wake-up period of Light Doze states less than or equal to corresponding Deep
The wake-up period of Doze states;
Wherein, PIT=1, the PIT tables for representing corresponding STA are not sky, that is, have data to need to return;Conversely, represent corresponding
The data or PIT entry that STA not asked are expired;And
TIM=1, represent that corresponding AP has cached corresponding STA data;Conversely, represent that corresponding AP does not receive corresponding STA's
Data.
In the present invention, common Deep Doze wake-up periods are traditionally arranged to be 3 Beacon or more long, but typically not
More than 9 Beacon cycles.STA can set Light Doze wakeup time, be waken up if provided as each beacon,
So data delay is with regard to very little;If provided as the wake-up period as Deep Doze, it saves one with Deep Doze
Sample;Its difference is the checking mechanism after waking up, and that be waken up detection in Deep Doze is PIT, and in Light Doze
It is waken up needs while detects PIT and TIM.Preferably, in the above-mentioned methods, can also be further using following improvement or specific
Any one in executive measure or any combination:
1st, when above-mentioned STA is in Light Doze, check whether PIT entries are expired by STA, if expired, PIT=is set
0, and enter Deep Doze states.
2nd, when in Tx states, above-mentioned STA passes through phase in packet transmitted by corresponding AP when to corresponding AP request datas
The bit identification answered judges whether all data receive.
3rd, above-mentioned STA sends null frame to inform AP before Deep Doze states are switched to corresponding AP.
4th, above-mentioned STA using back off mechanism (it is a kind of clash when mandatory retransmission delay avoidance mechanism) it is competing
Channel is striven, if channel idle, STA sends PS-Poll frame request datas.
Corresponding with the above method, invention additionally discloses a kind of STA, is interacted for AP corresponding to NDN networks,
The STA:For being five kinds of states by the PSM mode divisions of itself, it is respectively:Deep Doze states, Light Doze shapes
State, Idle Listening states, Tx states and Rx states;Then in conjunction with Beacon cycles, local PIT tables and corresponding AP institutes
The TIM information of transmission switches between five kinds of states, and specific switching includes:
STA creates Interest, and whether in local CS have corresponding Interest data, if so, then returning if checking
Return data;If not provided, the prefix of the Interest and corresponding interface are established into a new entry increases in PIT tables,
Then Interest to corresponding AP is sent;Now, the PIT=1 of the STA, STA enter Light Doze states;
When the STA is in Light Doze, whether the TIM transmitted by the corresponding AP of each wake-up period inspection in setting
There is data return;If TIM=0, data are represented also without AP is returned, STA continues in Light Doze states;If PIT=1
And TIM=1, represent that data have returned to AP, then STA switches to Idle Listening states;
When in Idle Listening states, the channel between the STA competitions and corresponding AP, if do not competed
Channel, then switch to Light Doze states;If channel, conversion to Tx states are arrived in competition;
When in Tx states, the STA is to corresponding AP request datas, and after all data have been received, checking again for PIT is
No is 0, if PIT=0, into Deep Doze states;If PIT=1 and TIM=0, into Light Doze states;
When in Deep Doze states, the wake-up period of default setting is integer more than Beacon cycle at least twice
Times, and be waken up when needing and sending Interest;When in Light Doze states, the wake-up period of setting is described
The integral multiple in Beacon cycles;And the STA corresponds to the wake-up period of Light Doze states less than or equal to corresponding Deep
The wake-up period of Doze states;
Wherein, PIT=1, the PIT tables for representing corresponding STA are not sky, that is, have data to need to return;Conversely, represent corresponding
The data or PIT entry that STA not asked are expired;And
TIM=1, represent that corresponding AP has cached corresponding STA data;Conversely, represent that corresponding AP does not receive corresponding STA's
Data.
The invention has the advantages that:
The present invention utilizes NDN architected features, increases Light Doze states, to solve wireless NDN terminal under environment energy consumption
Problem.In order that obtaining STA more effectively enters NDN-PSM mechanism, increase Light Doze states distinguish each shape with more fine granularity
State, STA determines whether to anticipate the data message reached using its PIT status information, and then can utilize NDN-PSM mechanism
Allow STA more times in a dormant state, further improve mobile terminal STA energy consumption saving.Meanwhile in order to reduce data
Return to delay, by etc. the STA of data to be received switch to Light Doze states, so not only ensure that STA energy-conservation, and
At utmost reduce the delay of data.
Below with reference to accompanying drawings, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the NDN-PSM state transition process schematics of the embodiment of the present invention.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
Embodiment 1
The present embodiment discloses a kind of WLAN energy-saving method based on NDN frameworks.
Fig. 1 is based on NDN-PSM power-saving mechanism state transition processes under wireless NDN environment for the present invention.As shown in Figure 1:
STA wakes up from Deep Doze states create Interest first, checks in local CS whether there is corresponding Interest
Data, if so, then returned data;If not provided, by the prefix of the Interest and corresponding interface establish one it is new
Entry increases in PIT tables, then sends Interest to corresponding AP;Now, STA PIT=1, STA enter Light
Doze states.
When STA is in Light Doze, whether there is number in the TIM transmitted by the corresponding AP of each Beacon periodic awakenings inspection
According to return;If TIM=0, data are represented also without AP is returned, STA continues in Light Doze states;If PIT=1 and
TIM=1, represent that data have returned to AP, then STA switches to Idle Listening states.
When in Idle Listening states, the channel between STA competitions and corresponding AP, if not competing letter
Road, then switch to Light Doze states;If channel, conversion to Tx states are arrived in competition.
When in Tx states, STA is to corresponding AP request datas, after all data have been received, check again for PIT whether be
0, if PIT=0, into Deep Doze states;If PIT=1 and TIM=0, into Light Doze states.
When in Deep Doze states, the wake-up period of acquiescence at least twice in Beacon cycles more than, and needing
It is waken up when sending Interest.
, can also be further using any one in following improvement or specific executive measure or any group in the present embodiment
Close:
1st, when above-mentioned STA is in Light Doze, check whether PIT entries are expired by STA, if expired, PIT=is set
0, and enter Deep Doze states.
2nd, when in Tx states, above-mentioned STA passes through phase in packet transmitted by corresponding AP when to corresponding AP request datas
The bit identification answered judges whether all data receive.I.e. by increasing extra bit identification in the packet transmitted by AP
Whether (such as More data positions in subsequent embodiment) has more data, so as to reduce extra wait IL, so can
Whether the data whether " precognition " has data to come and ask have been transmitted, and can reduce the IL times and disappear so as to save energy
Consumption.
3rd, above-mentioned STA sends null frame to inform AP before Deep Doze states are switched to corresponding AP.
4th, above-mentioned STA utilizes back off mechanism competitive channels, if channel idle, STA sends PS-Poll frames (one
The frame that kind IEEE 802.11 is defined) request data.
The division of labor and switching between the above-mentioned five kinds of states of the present embodiment are fully understood for ease of those skilled in the art, will be upper
Five kinds of states are stated further to be summarized as follows:
(1)Deep Doze:Because NDN is driven based on receiving terminal, only Consumer sends data just can be from Deep
Doze states wake up.When PIT tables for it is empty when (PIT=0), STA to AP send null frame (NULL Frame) subsequently into
Deep Doze states.Another mark that STA wakes up from Deep Doze states is its own listening interval cycle (Listen
interval,LI).After the LI cycles are reached, STA, which can wake up, checks the PIT tables of itself and reception Beacon frames.
(2)Light Doze:If STA in Light Doze states, illustrates that STA waits pending data to return and each
Beacon periodic awakenings receive TIM.If TIM is empty (TIM=0), represent that AP does not cache the data of the STA.STA will enter
Light Doze states.If PIT=0, represent that STA does not have data to return or PIT entries are expired, STA is then directly entered
Deep Doze states.
(3)Idle Listening:If STA enters Idle states, illustrate there is data latency return, STA intercepts channel.
If PIT=1 and TIM=1, the data of the STA are indicated on AP, and STA utilizes back off mechanism competitive channels, if letter
Road is idle, then STA sends PS-Poll frame request datas;If channel busy, it is next that STA enters the wait of Light Doze states
The individual Beacon cycles carry out channel competition until having received data.If PIT=1 and TIM=0, represent that AP does not cache the STA
Data, then STA be directly entered the pending datas such as Light Doze states.If PIT=0, then it represents that the data mistake of STA requests
Phase, then STA be directly entered Deep Doze states.
(4)Tx:When STA is in transmission state, Light Doze states are initially entered after data have been sent, wait pending data
Return.
(5)Rx:If STA is in reception state, illustrate that channel is arrived in STA competitions, STA sends PS-Poll frames to AP requests
Data, until More data positions are equal to 0, expression has received all data.STA checks again for whether PIT is empty, if PIT is
Sky, STA are then directly entered Deep Doze states;If PIT does not enter Light Doze states for sky, STA.
To sum up, the present embodiment utilizes NDN architected features, and unsatisfied Interest, i.e. table are determined whether by PIT tables
Show whether STA has the expected Data messages reached, can more fine granularity distinguish STA power consumption state;Therefore, by existing dormancy
State is further subdivided into Light Doze states and Deep Doze states, is asked with solving wireless NDN terminal under environment energy consumption
Topic.In other words, i.e.,:
In order that obtaining STA more effectively enters NDN-PSM mechanism, increase Light Doze states are distinguished each with more fine granularity
State, STA determines whether to anticipate the data message reached using its PIT status information, and then can utilize NDN-PSM machines
System allows STA more times in a dormant state, further improves mobile terminal STA energy consumption saving.Meanwhile in order to reduce number
Postpone according to returning, by etc. the STA of data to be received switch to Light Doze states, so not only ensure that STA energy-conservation, and
And at utmost reduce the delay of data.
Embodiment 2
The present embodiment discloses a kind of STA for performing above-described embodiment correlation method, is carried out for AP corresponding to NDN networks
Interaction is saved with realizing.
The present embodiment STA:For being five kinds of states by the PSM mode divisions of itself, it is respectively:Deep Doze states,
Light Doze states, Idle Listening states, Tx states and Rx states;Then in conjunction with Beacon cycles, local PIT
Table and the TIM information transmitted by corresponding AP switch between five kinds of states, and specific switching includes:
STA creates Interest, checks in local CS whether there is corresponding Interest data, if so, then returning to number
According to;If not provided, the prefix of the Interest and corresponding interface are established into a new entry increases in PIT tables, then
Send Interest to corresponding AP;Now, STA PIT=1, STA enter Light Doze states;
When STA is in Light Doze, whether there is number in the TIM transmitted by the corresponding AP of each Beacon periodic awakenings inspection
According to return;If TIM=0, data are represented also without AP is returned, STA continues in Light Doze states;If PIT=1 and
TIM=1, represent that data have returned to AP, then STA switches to Idle Listening states;
When in Idle Listening states, the channel between STA competitions and corresponding AP, if not competing letter
Road, then switch to Light Doze states;If channel, conversion to Tx states are arrived in competition;
When in Tx states, STA is to corresponding AP request datas, after all data have been received, check again for PIT whether be
0, if PIT=0, into Deep Doze states;If PIT=1 and TIM=0, into Light Doze states;
When in Deep Doze states, the wake-up period of acquiescence at least twice in Beacon cycles more than, and needing
It is waken up when sending Interest.
Similarly, the present embodiment STA can also use following improvement or specifically any one in executive measure or any group
Close:
1st, when above-mentioned STA is in Light Doze, check whether PIT entries are expired by STA, if expired, PIT=is set
0, and enter Deep Doze states.
2nd, when in Tx states, above-mentioned STA passes through phase in packet transmitted by corresponding AP when to corresponding AP request datas
The bit identification answered judges whether all data receive.I.e. by increasing extra bit identification in the packet transmitted by AP
Whether (such as More data positions in subsequent embodiment) has more data, so as to reduce extra wait IL, so can
Whether the data whether " precognition " has data to come and ask have been transmitted, and can reduce the IL times and disappear so as to save energy
Consumption.
3rd, above-mentioned STA sends null frame to inform AP before Deep Doze states are switched to corresponding AP.
4th, above-mentioned STA utilizes back off mechanism competitive channels, if channel idle, STA sends PS-Poll frames (one
The frame that kind IEEE 802.11 is defined) request data.
To sum up, in the present embodiment, in order that STA more effectively enters NDN-PSM mechanism, increase Light Doze states with
More fine granularity distinguishes each state, and STA determines whether to anticipate the data message reached using its PIT status information, and then
STA more times can be allowed using NDN-PSM mechanism in a dormant state, further improve mobile terminal STA energy consumption section
About.Meanwhile in order to reduce data return latency, by etc. the STA of data to be received switch to Light Doze states, so not only
STA energy-conservation is ensure that, and at utmost reduces the delay of data.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. WLAN energy-saving method based on NDN frameworks, it is characterised in that including:It is five kinds of states by the PSM mode divisions between the STA and AP of NDN networks, is respectively:Deep Doze states, Light Doze states, Idle Listening states, Tx states and Rx states;TIM information transmitted by each STA combinations Beacon cycles, local PIT tables and corresponding AP is in five kinds of states Between switch over, specific switching includes:STA creates Interest, and whether in local CS have corresponding Interest data, if so, then returning to number if checking According to;If not provided, the prefix of the Interest and corresponding interface are established into a new entry increases in PIT tables, then Send Interest to corresponding AP;Now, the PIT=1 of the STA, STA enter Light Doze states;When the STA is in Light Doze, whether the TIM transmitted by the corresponding AP of each wake-up period inspection in setting has number According to return;If TIM=0, data are represented also without AP is returned, STA continues in Light Doze states;If PIT=1 and TIM=1, represent that data have returned to AP, then STA switches to Idle Listening states;When in Idle Listening states, the channel between the STA competitions and corresponding AP, if not competing letter Road, then switch to Light Doze states;If channel, conversion to Tx states are arrived in competition;When in Tx states, the STA is to corresponding AP request datas, after all data have been received, check again for PIT whether be 0, if PIT=0, into Deep Doze states;If PIT=1 and TIM=0, into Light Doze states;When in Deep Doze states, the wake-up period of default setting is integral multiple more than Beacon cycle at least twice, and It is waken up when needing and sending Interest;When in Light Doze states, the wake-up period of setting is described Beacon weeks The integral multiple of phase;And the STA corresponds to the wake-up period of Light Doze states less than or equal to corresponding Deep Doze states Wake-up period;Wherein, PIT=1, the PIT tables for representing corresponding STA are not sky, that is, have data to need to return;Conversely, represent that corresponding STA does not have There are the data to be asked or PIT entry expired;AndTIM=1, represent that corresponding AP has cached corresponding STA data;Conversely, represent that corresponding AP does not receive corresponding STA number According to.
- 2. the WLAN energy-saving method according to claim 1 based on NDN frameworks, it is characterised in that as the STA In Light Doze, the STA checks whether PIT entries are expired, if expired, sets PIT=0, and enter Deep Doze State.
- 3. the WLAN energy-saving method according to claim 1 based on NDN frameworks, it is characterised in that when in Tx shapes During state, the STA is judged all when to corresponding AP request datas by corresponding bit identification in packet transmitted by corresponding AP Whether data receive.
- 4. the WLAN energy-saving method according to claim 1 based on NDN frameworks, it is characterised in that the STA exists Before being switched to Deep Doze states, null frame is sent to corresponding AP.
- 5. the WLAN energy-saving method according to claim 1 based on NDN frameworks, it is characterised in that the STA profits With back off mechanism competitive channels, if channel idle, STA sends PS-Poll frame request datas.
- 6. a kind of STA, interacted for AP corresponding to NDN networks, it is characterised in that the STA:For by itself PSM mode divisions are five kinds of states, are respectively:Deep Doze states, Light Doze states, Idle Listening states, Tx states and Rx states;Then in conjunction with the TIM information transmitted by Beacon cycles, local PIT tables and corresponding AP described five Switched between kind state, specific switching includes:STA creates Interest, and whether in local CS have corresponding Interest data, if so, then returning to number if checking According to;If not provided, the prefix of the Interest and corresponding interface are established into a new entry increases in PIT tables, then Send Interest to corresponding AP;Now, the PIT=1 of the STA, STA enter Light Doze states;When the STA is in Light Doze, whether the TIM transmitted by the corresponding AP of each wake-up period inspection in setting has number According to return;If TIM=0, data are represented also without AP is returned, STA continues in Light Doze states;If PIT=1 and TIM=1, represent that data have returned to AP, then STA switches to Idle Listening states;When in Idle Listening states, the channel between the STA competitions and corresponding AP, if not competing letter Road, then switch to Light Doze states;If channel, conversion to Tx states are arrived in competition;When in Tx states, the STA is to corresponding AP request datas, after all data have been received, check again for PIT whether be 0, if PIT=0, into Deep Doze states;If PIT=1 and TIM=0, into Light Doze states;When in Deep Doze states, the wake-up period of default setting is integral multiple more than Beacon cycle at least twice, and It is waken up when needing and sending Interest;When in Light Doze states, the wake-up period of setting is described Beacon weeks The integral multiple of phase;And the STA corresponds to the wake-up period of Light Doze states less than or equal to corresponding Deep Doze states Wake-up period;Wherein, PIT=1, the PIT tables for representing corresponding STA are not sky, that is, have data to need to return;Conversely, represent that corresponding STA does not have There are the data to be asked or PIT entry expired;AndTIM=1, represent that corresponding AP has cached corresponding STA data;Conversely, represent that corresponding AP does not receive corresponding STA number According to.
- 7. STA according to claim 6, it is characterised in that when the STA is in Light Doze, the STA is also used In:Check whether PIT entries are expired, if expired, PIT=0 is set, and enters Deep Doze states.
- 8. STA according to claim 6, it is characterised in that when in Tx states, the STA is additionally operable to:To corresponding AP During request data, judge whether all data receive by corresponding bit identification in packet transmitted by corresponding AP.
- 9. STA according to claim 6, it is characterised in that the STA is additionally operable to:It is being switched to Deep Doze states Before, send null frame to corresponding AP.
- 10. STA according to claim 6, it is characterised in that the STA is additionally operable to:Competed and believed using back off mechanism Road, if channel idle, STA sends PS-Poll frame request datas.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710642099.9A CN107396433B (en) | 2017-07-31 | 2017-07-31 | WLAN energy-saving method and STA based on NDN framework |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710642099.9A CN107396433B (en) | 2017-07-31 | 2017-07-31 | WLAN energy-saving method and STA based on NDN framework |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107396433A true CN107396433A (en) | 2017-11-24 |
CN107396433B CN107396433B (en) | 2019-10-18 |
Family
ID=60343317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710642099.9A Active CN107396433B (en) | 2017-07-31 | 2017-07-31 | WLAN energy-saving method and STA based on NDN framework |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107396433B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021180179A1 (en) * | 2020-03-13 | 2021-09-16 | 华为技术有限公司 | Method and apparatus for determining data caching state |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102547933A (en) * | 2010-12-30 | 2012-07-04 | 中国移动通信集团公司 | Energy saving method and terminal |
CN102625425A (en) * | 2012-02-29 | 2012-08-01 | 电子科技大学 | Event adaptive sensor node |
CN103298038A (en) * | 2013-06-05 | 2013-09-11 | 浙江工业大学 | IEEE 802.11 WLAN (wireless local area network) low-delay energy-saving method |
CN103929284A (en) * | 2014-04-09 | 2014-07-16 | 东南大学 | High-reliability transmission method for wireless sensor network |
CN104812031A (en) * | 2014-01-26 | 2015-07-29 | 中兴通讯股份有限公司 | Energy-saving method and energy-saving system of machine type communication (MTC) user equipment, user equipment and radio network controller (RNC) |
-
2017
- 2017-07-31 CN CN201710642099.9A patent/CN107396433B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102547933A (en) * | 2010-12-30 | 2012-07-04 | 中国移动通信集团公司 | Energy saving method and terminal |
CN102625425A (en) * | 2012-02-29 | 2012-08-01 | 电子科技大学 | Event adaptive sensor node |
CN103298038A (en) * | 2013-06-05 | 2013-09-11 | 浙江工业大学 | IEEE 802.11 WLAN (wireless local area network) low-delay energy-saving method |
CN104812031A (en) * | 2014-01-26 | 2015-07-29 | 中兴通讯股份有限公司 | Energy-saving method and energy-saving system of machine type communication (MTC) user equipment, user equipment and radio network controller (RNC) |
CN103929284A (en) * | 2014-04-09 | 2014-07-16 | 东南大学 | High-reliability transmission method for wireless sensor network |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021180179A1 (en) * | 2020-03-13 | 2021-09-16 | 华为技术有限公司 | Method and apparatus for determining data caching state |
Also Published As
Publication number | Publication date |
---|---|
CN107396433B (en) | 2019-10-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106792916B (en) | Hybrid remote wireless sensor network system and communication method thereof | |
CN101971675B (en) | Wireless network including post groupcast time | |
CN102611996B (en) | The stand-by time of standing in wireless network is improved | |
CN1898900B (en) | Supporter, client and corresponding method for power saving in a wireless local area network | |
CN101803306B (en) | Deep sleep mode for mesh points | |
EP2206290A1 (en) | Method and apparatus for power management in communication system | |
CN101395844A (en) | Standby time improvements for stations in a wireless network | |
KR100489956B1 (en) | Method for Enhanced Power Saving on DCF based Wireless Networks | |
CN100486195C (en) | Energy-saving method of wireless self-combining network | |
Wu et al. | Named data networking enabled power saving mode design for WLAN | |
CN103298038A (en) | IEEE 802.11 WLAN (wireless local area network) low-delay energy-saving method | |
CN101969605A (en) | Method and equipment for determining DTIM interval by AP | |
Feng et al. | A low overhead wireless sensor networks MAC protocol | |
CN102186229A (en) | Independent basic service set (IBSS) system and power management method thereof | |
CN101466160B (en) | Method and system for saving energy of wireless netted network node | |
Miyanabe et al. | Synchronized power saving mechanisms for battery-powered mobile terminals in smart FiWi networks | |
CN107396433B (en) | WLAN energy-saving method and STA based on NDN framework | |
Li et al. | A novel delayed wakeup scheme for efficient power management in infrastructure-based IEEE 802.11 WLANs | |
Hu et al. | Energy-efficient scheduling strategies in IEEE 802.11 wireless LANs | |
WO2015089770A1 (en) | Method and apparatus for sta state transition in wlan system | |
Xie et al. | An adaptive PSM mechanism in WLAN based on traffic awareness | |
Wu et al. | Reducing idle listening time in 802.11 via ndn | |
Xie et al. | Delay-aware power saving mechanism for 802.11 wireless LANs via NDN | |
CN106304359A (en) | User terminal energy conservation optimizing method and user terminal apparatus under intensive user scene | |
MOR et al. | A Model for Energy Usage in IEEE 802.11 s Based Mesh Networks |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |