CN101202984B - Method, system for power-saving management of Ad Hoc network node and mobile terminal - Google Patents

Method, system for power-saving management of Ad Hoc network node and mobile terminal Download PDF

Info

Publication number
CN101202984B
CN101202984B CN200610162044XA CN200610162044A CN101202984B CN 101202984 B CN101202984 B CN 101202984B CN 200610162044X A CN200610162044X A CN 200610162044XA CN 200610162044 A CN200610162044 A CN 200610162044A CN 101202984 B CN101202984 B CN 101202984B
Authority
CN
China
Prior art keywords
node
rtim
window
message
neighbor node
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN200610162044XA
Other languages
Chinese (zh)
Other versions
CN101202984A (en
Inventor
杨凯
单娜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN200610162044XA priority Critical patent/CN101202984B/en
Publication of CN101202984A publication Critical patent/CN101202984A/en
Application granted granted Critical
Publication of CN101202984B publication Critical patent/CN101202984B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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

Abstract

The invention discloses an electricity saving management method of Ad Hoc network nodes, which comprises the following steps: a node which is in power save mode enters within the preset RTIM window time of the node and stays in wake-up state at least until the end of the RTIM window time; a neighbor node which has a message to send to the node in power save mode sends a service indication frame to the node in power save node within the RTIM window time of the node in power save mode; and the neighbor node and the node in power save mode enter or stay in the wake-up state after the RTIM windowtime ends, and conduct message interaction. The invention also discloses an Ad Hoc network system and a mobile terminal as an Ad Hoc network node. By means of the invention, power-saving management is realized when service interaction is little or no between the node in power save mode and the neighbor node.

Description

Power saving management method, system and the portable terminal of Ad Hoc network node
Technical field
The present invention relates to Ad Hoc networking technology area, relate in particular to a kind of power saving management method, system and portable terminal of Ad Hoc network node.
Background technology
Ad Hoc network is a kind of mobile network who does not have wired infrastructure to support, is characterized in equal as the mobile terminal device of each node, can move freely, and communicate by wireless channel.Because each mobile node itself is battery-powered, and battery capacity is limited, so allow mobile node continuous operation as far as possible for a long time, the one, need the requirement of battery capacity be improved, the 2nd, prolong operating time of mobile node by various power-save mechanism.Power-save mechanism in the Ad Hoc network mainly comprises two big classes at present, and a class is a dynamically shutdown mechanism of NIC (Network Interface Card, network interface unit), and another kind of is power control mechanism.
The dynamic shutdown mechanism of NIC specifically can be divided into message again and drive, the power-save mechanism of time driving and the compound driving of time/message.The power-save mechanism that message drives mainly is to understand communication conditions on the current channel by the message that sends on the monitor channel, if the current message of receiving and oneself have nothing to do, no artis can be estimated the message required time of current transmission according to network parameters such as message length information and bandwidth, at this section in the period, no artis just can be closed NIC, enter sleep state, save energy.
The node that the employing time drives power-save mechanism then periodically carries out some specific operation, and node can wake a bit of time interactive information or monitoring information up in the particular moment in each cycle.If there is not message to send or to receive, node can be in sleep state in remaining time in this cycle; If finding has message to send or to receive, then this node is in active state up to the transmission of finishing message or reception in the remaining time in this cycle.
In the prior art, proposed a kind of energy-saving mode based on 802.11 agreements, this pattern is to drive energy-saving mode a kind of typical lock in time.Each node in IBSS (Independent Basic Service Set, independent basic service group) is divided into several continuous beacons (Beacon) cycle with time shaft; And at WLAN Mesh (Wireless Local Area Network Mesh, the wireless mesh Local Area Network) in, each synchronous MP (Mesh Point, grid node) time shaft is divided into several continuous DTIM (Delivery Traffic Indication Message, transport service Indication message) Beacon cycle.When each cycle began, the node that works in PS (Power Save, energy-saving mode) pattern all woke up a period of time, and this time period is exactly ATIM (Announce Traffic Indication Message, a declaration service indication message) window.In the moment that the ATIM window begins, the node that respectively works under the PS pattern all is in wake-up states, and carries out synchronously with Beacon frame or DTIM Beacon frame.Synchronously, the node that has message to send carries out information interaction by sending professional indication frame with the receiving node that is operated under the PS pattern, and receiving node sends an acknowledgement frame after receiving this business indication frame, if the ATIM frame is a broadcast address, then need not to reply.If node has message to send or to receive, then be in active state up to the transmission of finishing association message or reception in the remaining cycle time after the ATIM window.
The shortcoming of this technology is: the ATIM window is that all nodes are total, the node of all working under the PS pattern all is waken up in this ATIM window, and keeping wake-up states to continue the time of ATIM window duration at least, this is for there not being service indication message node mutual and the PS pattern that a small amount of service indication message is mutual all to keep wake-up states to be unfavorable for economize on electricity in whole ATIM window in the ATIM window.In addition, in the cycle that present power saving management mechanism is divided the ATIM window based on time shaft, this just makes node under the PS pattern to divide on time shaft and is consistent, so this power saving management mechanism does not support asynchronous node to operate.
Summary of the invention
The problem to be solved in the present invention provides a kind of power saving management method, system and portable terminal of Ad Hoc network node, to strengthen in the existing Ad Hoc network electricity saving performance as each portable terminal of node.
For achieving the above object, one embodiment of the invention provide a kind of power saving management method of Ad Hoc network node, may further comprise the steps:
The node that is under the energy-saving mode is at first broadcasted own predefined RTIM RTIM window information for neighbor node record and utilization;
The node that is under the energy-saving mode enters in the predefined RTIM window time and keeps wake-up states to finish at least to the described RTIM window time at this node;
The neighbor node that has message to send to the described node that is under the energy-saving mode in the described described RTIM window time that is in the node under the energy-saving mode, sends professional indication frame to the described node that is under the energy-saving mode;
Described neighbor node and the described node that is under the energy-saving mode enter after the described RTIM window time finishes or keep wake-up states, carry out message interaction.
Another embodiment of the present invention also provides a kind of Ad Hoc network system, comprise at least two portable terminals as Ad Hoc network node, arbitrary described node that is under the energy-saving mode sends this node RTIM window information to other neighbor nodes, and with other neighbor node interactive services indication frames, acknowledgement frame, message at least a.
An embodiment more of the present invention also provides a kind of portable terminal, and the node as in the Ad Hoc network comprises: state switch unit, transmitting element, receiving element and processing unit,
Described state switch unit, the node that is under the energy-saving mode is at first broadcasted own predefined RTIM RTIM window information for neighbor node record and utilization; And, this node is switched between sleep state and wake-up states according to the RTIM window time and/or message interaction needs of this node;
Described transmitting element, when described state switch unit is controlled this node and is entered wake-up states, send the RTIM window information of this node to neighbor node, or, send at least a in professional indication frame, acknowledgement frame, the message to neighbor node according to RTIM window time of the neighbor node that obtains from described processing unit;
Described receiving element, when described state switch unit is controlled this node and is entered wake-up states, receive and identify at least a in the RTIM window information that neighbor node sends, professional indication frame, acknowledgement frame, the message, and the RTIM window information that described neighbor node is sent is sent to described processing unit;
Described processing unit, the RTIM window information that the neighbor node that described receiving element is received sends is handled, and obtains the RTIM window time of described neighbor node and is sent to described transmitting element.
Compared with prior art, the present invention has the following advantages:
The invention provides the node that works in energy-saving mode in a kind of Ad Hoc network wakes up, receives professional indication and switch to dormant universal electricity-saving management method when free of data is transmitted in predefined RTIM (Receive Traffic Indication Message receives service indication message) window.Make when working in node under the energy-saving mode and neighbor node service interaction seldom or when not having service interaction, the RTIM windowing mechanism more helps electricity saving performance, the present invention does not simultaneously also require that node is waken up at synchronization, each node can be according to actual needs wake up and sleep state between switch, thereby support the power saving management of asynchronous node.
Description of drawings
Fig. 1 is the flow chart of the power saving management method of Ad Hoc network node in the embodiment of the invention one;
Fig. 2 is the network topology structure figure of Ad Hoc network node among the present invention;
Fig. 3 is the flow chart of the power saving management method of Ad Hoc network node in the embodiment of the invention two;
Fig. 4 is the electricity-saving state figure of Ad Hoc network node in the embodiment of the invention two;
Fig. 5 is the flow chart of the power saving management method of Ad Hoc network node in the embodiment of the invention three;
Fig. 6 is the electricity-saving state figure of Ad Hoc network node in the embodiment of the invention three;
Fig. 7 is the flow chart of the power saving management method of Ad Hoc network node in the embodiment of the invention four;
Fig. 8 is the electricity-saving state figure of Ad Hoc network node in the embodiment of the invention four;
Fig. 9 is an Ad Hoc network system and as the structural representation of the portable terminal of Ad Hoc network node in the embodiment of the invention five.
Embodiment
Core of the present invention is that the node under the energy-saving mode receives the service indication message of neighbor node by utilizing the RTIM window, and determines whether keep wake-up states and neighbor node to carry out message interaction after this RTIM window time.This RTIM window is each privately owned window that is in the node under the energy-saving mode, in the RTIM window time of each node, this node of mandatory requirement is in wake-up states, receive the business indication frame that other nodes send to this node, not having message needs mutual other nodes that are under the energy-saving mode then to keep sleep state in the time at the RTIM of non-node window, make each node can be according to actual needs wake up and sleep state between switch, and then reached the purpose that makes each node economize on electricity.
In the embodiments of the invention one, a kind of power saving management method of Ad Hoc network node may further comprise the steps as shown in Figure 1:
Step s101, the node that is under the energy-saving mode are broadcasted the RTIM window information of this node;
Step s102, neighbor node receive described RTIM window information and write down described RTIM window information parameter;
Step s103, described neighbor node are according to described RTIM window information parameter, calculate the described time distribution that is in the RTIM window of the node under the energy-saving mode, and in the described RTIM window time, send professional indication frame to the described node that is under the energy-saving mode;
Step s104, the described node that is under the energy-saving mode send acknowledgement frame;
Step s105, described neighbor node and the described node that is under the energy-saving mode enter wake-up states behind the RTIM window, carry out message interaction.
Among the step s101, the node that is under the energy-saving mode can send for periodically sending or must finishing in official hour once the broadcasting that the RTIM window information of this node carries out, and this broadcasting can be RTIM broadcast (RTIM Advertisement) or Beacon.In following embodiment, will be to the different airtimes power saving management method during with the different forms of broadcasting be described in detail.
In the embodiments of the invention two, provide a kind of power saving management method of Ad Hoc network node, the network topology structure of using this method as shown in Figure 2, wherein node A, B, C are operated under the PS pattern; Node D, E are operated under active (Active) pattern, node A, B, C broadcast its RTIM window message at wireless channel, and this window message is finished at least once in the time at RTIM AdvertPeriodMAX (working in the maximum time interval of the node transmission RTIM window message under the PS pattern) and sent.Comprise RTIM offset (RTIM window zero-time is apart from the bias of the time that sends the RTIM window message next time), RTIM duration (duration that the RTIM window continues) and RTIMperiodicity information such as (repetition periods of RTIM window) in this window message.
When Node B need be when node A sends message, its flow process comprises step as shown in Figure 3:
The RTIM window message of step s301, Node B receiving node A broadcasting, and write down this RTIM window information parameter;
Step s302, Node B distributed according to the time of the RTIM window of this RTIM window information calculation of parameter node A;
Step s303, node A enter wake-up states in the RTIM of this node window zero-time, and keep this state at least and finish up to the RTIM window;
Step s304, Node B are waken up in the time at the RTIM of node A window, send professional indication frame to node A, and notice node A: Node B has message to send to node A;
Step s305, node A receive in the time from the business of Node B at the RTIM of this node window and indicate frame, send acknowledgement frame to Node B: the message that node A can keep wake-up states to come receiving node B to send behind the RTIM window;
Step s306, Node B receive the acknowledgement frame of node A, enter sleep state in the remaining RTIM window time;
Step s307, node A and Node B enter wake-up states behind the RTIM window, the mutual message of node A and Node B;
Step s308, node A and Node B can be selected to continue to enter sleep state according to self-demand and save energy after finishing message interaction.
The electricity-saving state figure of node A and Node B is as shown in Figure 4 among step s301～step s308:
(1) node A broadcasts its RTIM Advertisement message at set intervals at interval, carry RTIM window information parameter (RTIM offset in the RTIMAdvertisement message, RTIM duration, RTIM periodicity), hypothesis RTIM offset=3ms in this example, RTIM duration=10ms, RTIM periodicity=100ms;
(2) Node B is at T 0Constantly receive the RTIM Advertisement message that node A sends, carry RTIM window information parameter (RTIM offset=3ms, RTIM duration=10ms, RTIM periodicity=100ms) in the message.Can learn the rule that the RTIM window of node A distributes in time according to RTIM window information parameter wherein: the starting point T of RTIM satisfies (T-T 0-3ms) %100=0, the duration of RTIM window is 10ms;
(3) Node B is at T 0+ 50ms expects to send message constantly to node A;
(4) Node B originates in T according to the next RTIM window that the RTIM window parameter of node A of record calculates node A 0+ 103ms;
(5) Node B is at the RTIM of node A window starting point T 0+ 103ms enters wake-up states constantly and competitive channel sends professional indication frame to node A;
(6) node A wakes up in the RTIM of this node window starting point, and keeps wake-up states RTIM window duration 10ms;
(7) node A is at T 0The moment of+104ms sends acknowledgement frame to Node B after receiving the business indication frame of Node B transmission;
(8) Node B receives the acknowledgement frame of node A, finds that the RTIM window of node A also can continue about 9ms, and then the Node B selection enters sleep state and finishes up to the RTIM of node A window;
(9) node A receives from the business of Node B at the RTIM window and indicates frame, still keeps the message interaction of wake-up states receiving node B after the RTIM window finishes;
(10) Node B finishes back T at the RTIM of node A window 0+ 113ms constantly can reenter wake-up states, and competitive channel and node carry out message interaction;
(11) after node A and Node B are finished message interaction, node A is according to the business indication that receives only between the RTIM of this node window phase from Node B, the service indication message that does not have other nodes again, judgement does not have the demand of mutual message in the remaining time in this cycle, select to enter sleep state.
In the embodiments of the invention three, provide a kind of power saving management method of Ad Hoc network node, the network topology structure of using this method as shown in Figure 2, wherein node A, B, C are operated under the PS pattern; Node D, E are operated under the Active pattern, and node A, B, C periodically send Beacon at wireless channel, carry the RTIM window information of this node among the Beacon.Wherein comprise information such as RTIM offset, RTIM duration and RTIM periodicity in the window message.
When node D need be when node A sends message, its flow process comprises step as shown in Figure 5:
Step s501, node D receive the Beacon information of node A, the RTIM window information parameter of carrying among the record Beacon;
Step s502, node D distributed according to the time of the RTIM window of RTIM window information calculation of parameter node A;
Step s503, node A enter wake-up states in the RTIM of this node window zero-time, and keep this state at least and finish up to the RTIM window;
Step s504, node D competitive channel between the RTIM of node A window phase sends professional indication frame to node A, and notice node A: node D has message to send to node A;
Step s505, node A receive in the time from the business of node D at the RTIM of this node window and indicate frame, send acknowledgement frame to node D: the message that node A can keep wake-up states to come receiving node D to send behind the RTIM window;
Step s506, node A enter wake-up states behind the RTIM window, node D and the mutual message of node A;
Step s507, node A can save energy according to select to continue to enter sleep state from the business indication frame information that receives between the RTIM window phase after finishing message interaction.
The electricity-saving state figure of node A and node D is as shown in Figure 6 among step s501～step s507:
(1) node A periodically sends Beacon, carries RTIM window information parameter (RTIM offset, RTIM duration, RTIM periodicity) in the Beacon message; Here can be understood as the RTIM window period is represented that with the form in 1 or several Beacon cycle the RTIM periodic table is shown 2 Beacon cycles in this example;
(2) node D is at T 0Constantly receive the Beacon message that node A sends, carry RTIM window information parameter (RTIM offset=3ms in the message, RTIM duration=10ms, RTIMperiodicity=2 * Beacon Interval=200ms), can learn the rule that the RTIM window of node A distributes in time according to RTIM window information parameter wherein: the starting point T of RTIM satisfies (T-T 0-3ms) %200=0, the duration of RTIM window is 10ms;
(3) node D is at T 0+ 150ms is intended to send message constantly to node A;
(4) node D calculates next RTIM window according to the RTIM window parameter of node A of record and originates in T 0+ 203ms;
(5) node D is at the RTIM of node A window starting point T 0+ 203ms begins competitive channel constantly, sends professional indication frame to node A;
(6) node A wakes up in the RTIM of this node window starting point, and keeps wake-up states RTIM window duration 10ms;
(7) after node A receives the business indication frame of node D transmission, send acknowledgement frame to node D;
(8) node A receives from the business of node D at the RTIM window and indicates frame, still keeps wake-up states after the RTIM window finishes, and carries out message interaction with node D;
(9) after node A and node D finish message interaction, node A is according to the business indication that receives only between the RTIM of this node window phase from node D, the service indication message that does not have other nodes again, judgement does not have the demand of mutual message in the remaining time in this cycle, select to enter sleep state.
In the embodiments of the invention four, provide a kind of power saving management method of Ad Hoc network node, the network topology structure of using this method as shown in Figure 2, wherein node A, B, C are operated under the PS pattern; Node D, E are operated under the Active pattern, and node A, B, C periodically send Beacon at wireless channel, carry the RTIM window information of this node among the Beacon.Wherein comprise information such as RTIM duration in the window information.The RTIM window begins with Beacon, and the cycle is consistent with the Beacon transmission cycle.
When Node B need be when node A sends message, its flow process comprises step as shown in Figure 7:
Step s701, Node B receive the Beacon information of node A, TBTT (Target Beacon Transmission Time, the target Beacon transmission time) time of record node A;
Step s702, Node B were waken up before the time of TBTT next time of node A, waited for the Beacon of receiving node A;
Step s703, node A wake up constantly at its TBTT, send Beacon, carry RTIM window duration RTIM duration information among the Beacon, and keep wake-up states time of RTIM duration at least; Wherein if RTIM duration be 0 or beacon in do not have the RTIM parameter information, then this beacon cycle does not have the RTIM window.
Step s704, Node B receive the Beacon that node A sends, learn the duration that the RTIM window of present node A can continue according to the RTIMduration information among the Beacon, and during competitive channel send professional indication frame to node A, notice node A: Node B has message to send to node A;
Step s705, node A receive in the time from the business of node D at the RTIM of this node window and indicate frame, send acknowledgement frame to Node B: the message that node A can keep wake-up states to come receiving node B to send behind the RTIM window;
After step s706, Node B receive the acknowledgement frame of node A, can be chosen in the remaining RTIM window time to enter sleep state;
Step s707, node A and B enter wake-up states behind the RTIM window, Node B and the mutual message of node A;
Step s708, node A and B can save energy according to select to continue to enter sleep state from the business indication frame information that receives between the RTIM window phase after finishing message interaction.
The electricity-saving state figure of node A and Node B is as shown in Figure 8 among step s701～step s708:
(1) node A periodically sends Beacon message, carries RTIM window information parameter (RTIM duration=10ms, Beacon interval=100ms) in the Beacon message.Here can be understood as RTIM offset=0, RTIM periodicity=Beacon interval;
(2) the Node B last time receives the Beacon message of node A transmission at moment T 0, the TBTT of record node A is (TBTT-T constantly 0) %Beacon Interval=0;
(3) Node B is at T 0+ 350ms intention sends message to node A;
(4) TBTT next time of Node B computing node A is T constantly 0+ 400ms;
(5) (TBTT of node A the is preceding constantly) monitor channel of waking up was waited for the Beacon message of receiving node A after Node B was waited for 48ms;
(6) Node B is at T 0+ 401ms receives the Beacon that node A sends constantly, upgrades the TBTT moment (TBTT-T of the node A of its record 0-401) % Beacon Interval=0, and the RTIM duration that carries from Beacon learns that the RTIM window duration of node A is 10ms;
(7) Node B competitive channel under this window sends professional indication frame to node A;
(8) receive in the node A window duration from the business of Node B indication frame, send acknowledgement frame to Node B;
(9) Node B is at T 0+ 403ms is the acknowledgement frame of receiving node A constantly, finds that window will continue 8ms, selects to enter sleep state and finishes to the RTIM window;
(10) node A and Node B all will enter wake-up states after the RTIM of node A window finishes, and the Node B competitive channel sends message to node A;
(11) node A and Node B are after finishing message interaction, node A is according to the business indication that receives only between the RTIM of this node window phase from Node B, the service indication message that does not have other nodes again, judgement does not have the demand of mutual message in the remaining time in this cycle, select to continue to enter sleep state and save energy.
The present invention also provides a kind of Ad Hoc network system, comprise at least two portable terminals as Ad Hoc network node, wherein, arbitrary node that is under the energy-saving mode sends the RTIM window information of this node to other neighbor nodes, send professional indication frame, acknowledgement frame or message to other neighbor nodes when needed, and receive business indication frame, acknowledgement frame or message that other neighbours send.Embodiments of the invention five comprise that with this Ad Hoc network system two portable terminals as network node are example, these two portable terminals are the neighbor node of the other side's node each other, as shown in Figure 9, this portable terminal 100 comprises: state switch unit 101, transmitting element 102, receiving element 103, processing unit 104 and RTIM window information setup unit 105, wherein:
State switch unit 101 when the portable terminal as node is operated in economize on electricity mould following time, according to the RTIM window time and/or the message interaction needs of self node, switches self node between sleep state and wake-up states.Wherein, state switch unit 101 obtains the RTIM time window from RTIM window information setup unit 105, and enters and keep wake-up states to finish at least to the RTIM window time at this this node of RTIM time window inner control; When this node is operated in economize on electricity mould following time, if transmitting element 102 need send message or the professional indication frame that message or professional indication frame or receiving element 103 need to receive neighbor node to neighbor node, state switch unit 101 these nodes of control enter wake-up states.After time, when no message need exchange with neighbor node, state switch unit 101 these nodes of control entered sleep state at the RTIM of this node window.
Transmitting element 102, be connected with processing unit 104 with state switch unit 101, send the RTIM window information of this node to neighbor node, this information can be carried transmission by beacon, if this node is operated under the energy-saving mode, need the RTIM window information of this node that carrier state switch unit 101 obtains in the beacon from RTIM window information setup unit 105; If this node is operated under the active mode, can not carry this RTIM window information in the beacon, RTIM window in the RTIM window information that perhaps carries continues duration and is set to 0 in advance, because be operated in active mode following time, node can receive the message that neighbor node sends at any time.In addition, when transmitting element 102 enters wake-up states at these nodes of state switch unit 101 control, the RTIM window time of the neighbor node that obtains according to processing unit 104, send professional indication frame, acknowledgement frame or message to neighbor node when needed.
Receiving element 103, be connected with processing unit 104 with state switch unit 101, when state switch unit 101 these nodes of control are in wake-up states, receive and identify the RTIM window information that neighbor node sends, and the business that neighbor node sends is indicated frame, acknowledgement frame or message.Processing unit 104 can be according to the RTIM window information of this neighbor node that receives transmission, the RTIM window time of obtaining neighbor node.
Processing unit 104, the RTIM window information that the neighbor node that receives according to receiving element 103 sends, the RTIM window time of obtaining neighbor node.When having message, this node need when the neighbor node under being in energy-saving mode sends, can send professional indication frame to neighbor node by transmitting element 102 competitive channels at the RTIM of this neighbor node window in the time.
RTIM window information setup unit 105, set and store the RTIM window information of this node, this window information comprises: identification information, next RTIM window that the RTIM window continues duration, RTIM window send deviant and the RTIM window repetition period of RTIM window information time apart from this.If this node is operated under the active state, then can be set to 0 by the lasting duration of RTIM window, promptly can satisfy normal message interaction according to existing method under the active state.In these parameters, it is preset value that the RTIM window continues duration, the identification information of RTIM window is MAC (the Media AccessControl of this node, media interviews control) address, next RTIM window can be 0 apart from the deviant that this sends the RTIM window information time, the RTIM window repetition period can be a predefined set time, or represents by setting the different Beacon cycles, sends all after dates as per twice Beacon and then enters the RTIM window time one time.State switch unit 101 is controlled the state of this node according to this RTIM window information, and the RTIM window information should be sent to neighbor node by transmitting element 102 when this node is operated in energy-saving mode following time.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims (15)

1. the power saving management method of an Ad Hoc network node is characterized in that, may further comprise the steps:
The node that is under the energy-saving mode is at first broadcasted own predefined RTIM RTIM window information for neighbor node record and utilization;
The node that is under the energy-saving mode enters in the predefined RTIM window time and keeps wake-up states to finish at least to the described RTIM window time at this node;
The neighbor node that has message to send to the described node that is under the energy-saving mode in the described described RTIM window time that is in the node under the energy-saving mode, sends professional indication frame to the described node that is under the energy-saving mode;
Described neighbor node and the described node that is under the energy-saving mode enter after the described RTIM window time finishes or keep wake-up states, carry out message interaction.
2. the power saving management method of Ad Hoc network node according to claim 1 is characterized in that, described message comprises at least a in Frame, management frames, the control frame.
3. the power saving management method of Ad Hoc network node according to claim 1, it is characterized in that, described neighbor node is in energy-saving mode, at this neighbor node beyond the predefined RTIM window time, if this neighbor node and other nodes do not have message interaction, then this neighbor node keeps sleep state.
4. the power saving management method of Ad Hoc network node according to claim 1, it is characterized in that described neighbor node also comprises: the described node that is under the energy-saving mode sends acknowledgement frame to described neighbor node after the described node that is under the energy-saving mode sends described professional indication frame.
5. as the power saving management method of Ad Hoc network node as described in the claim 4, it is characterized in that, described neighbor node is in energy-saving mode, after receiving described acknowledgement frame, described neighbor node enters sleep state, finishes up to the described described RTIM window time that is in the node under the energy-saving mode.
6. the power saving management method of Ad Hoc network node according to claim 1 is characterized in that, described neighbor node also comprises step before the described node that is under the energy-saving mode sends professional indication frame:
The described node that is under the energy-saving mode comprises that to the broadcasting of each neighbor node this section puts the message of predefined RTIM window information;
Described each neighbor node receives the described RTIM window information of described node and writes down described RTIM window information parameter;
Described each neighbor node obtains the RTIM window time of described node according to described RTIM window information parameter.
7. as the power saving management method of Ad Hoc network node as described in the claim 6, it is characterized in that the described node that is under the energy-saving mode sends for periodically sending or must finishing once the broadcast of this node RTIM window information in official hour.
8. as the power saving management method of Ad Hoc network node as described in the claim 6, it is characterized in that the described RTIM window information of node by this node of beacon broadcast that is under the energy-saving mode.
9. as the power saving management method of Ad Hoc network node as described in the claim 6, it is characterized in that described RTIM window message parameter comprises that the RTIM window continues the identification information of duration and RTIM window.
10. as the power saving management method of Ad Hoc network node as described in the claim 9, it is characterized in that the identification information of described RTIM window is for sending the described MAC Address that is in the node under the energy-saving mode of described RTIM window message.
11. the power saving management method as Ad Hoc network node as described in the claim 9 is characterized in that, described RTIM window message parameter comprises that also next RTIM window sends deviant and/or the RTIM window repetition period of RTIM window information time apart from this.
12. an Ad Hoc network system comprises at least two portable terminals as Ad Hoc network node, it is characterized in that:
Described portable terminal is at first broadcasted own predefined RTIM RTIM window information for neighbor node record and utilization; Enter in the predefined RTIM window time and keep wake-up states to finish at this node at least to the described RTIM window time; And with other neighbor node interactive services indication frames, acknowledgement frame, message at least a;
Described portable terminal comprises state switch unit, transmitting element, receiving element and processing unit,
Described state switch unit is operated in energy-saving mode following time, and RTIM window time and/or message interaction needs according to this node switch this node between sleep state and wake-up states;
Described transmitting element, when described state switch unit is controlled this node and is entered wake-up states, send the RTIM window information of this node to neighbor node, or, send at least a in professional indication frame, acknowledgement frame, the message to neighbor node according to RTIM window time of the neighbor node that obtains from described processing unit;
Described receiving element, when described state switch unit is controlled this node and is entered wake-up states, receive and identify at least a in the RTIM window information that neighbor node sends, professional indication frame, acknowledgement frame, the message, and the RTIM window information that described neighbor node is sent is sent to described processing unit;
Described processing unit, the RTIM window information that the neighbor node that described receiving element is received sends is handled, and obtains the RTIM window time of described neighbor node and is sent to described transmitting element.
13. as Ad Hoc network system as described in the claim 12, it is characterized in that described portable terminal also comprises: RTIM window information setup unit, the RTIM window information of setting this node of storage also offers described state switch unit.
14. a portable terminal, the node as in the Ad Hoc network is characterized in that, comprising: state switch unit, transmitting element, receiving element and processing unit,
Described state switch unit, the node that is under the energy-saving mode is at first broadcasted own predefined RTIM RTIM window information for neighbor node record and utilization; And, this node is switched between sleep state and wake-up states according to the RTIM window time and/or message interaction needs of this node;
Described transmitting element, when described state switch unit is controlled this node and is entered wake-up states, send the RTIM window information of this node to neighbor node, or, send at least a in professional indication frame, acknowledgement frame, the message to neighbor node according to RTIM window time of the neighbor node that obtains from described processing unit;
Described receiving element, when described state switch unit is controlled this node and is entered wake-up states, receive and identify at least a in the RTIM window information that neighbor node sends, professional indication frame, acknowledgement frame, the message, and the RTIM window information that described neighbor node is sent is sent to described processing unit;
Described processing unit, the RTIM window information that the neighbor node that described receiving element is received sends is handled, and obtains the RTIM window time of described neighbor node and is sent to described transmitting element.
15. as portable terminal as described in the claim 14, it is characterized in that, also comprise: RTIM window information setup unit, the RTIM window information of setting this node of storage also offers described state switch unit.
CN200610162044XA 2006-12-11 2006-12-11 Method, system for power-saving management of Ad Hoc network node and mobile terminal Active CN101202984B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200610162044XA CN101202984B (en) 2006-12-11 2006-12-11 Method, system for power-saving management of Ad Hoc network node and mobile terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200610162044XA CN101202984B (en) 2006-12-11 2006-12-11 Method, system for power-saving management of Ad Hoc network node and mobile terminal

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CN201110167196XA Division CN102227152B (en) 2006-12-11 2006-12-11 Power saving management method of Ad Hoc network points and system thereof, and mobile terminals

Publications (2)

Publication Number Publication Date
CN101202984A CN101202984A (en) 2008-06-18
CN101202984B true CN101202984B (en) 2011-06-15

Family

ID=39517900

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200610162044XA Active CN101202984B (en) 2006-12-11 2006-12-11 Method, system for power-saving management of Ad Hoc network node and mobile terminal

Country Status (1)

Country Link
CN (1) CN101202984B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101465810B (en) * 2009-01-23 2013-04-17 华为技术有限公司 Method, device and system for controlling chip energy consumption
KR102367969B1 (en) * 2015-02-23 2022-03-02 삼성전자주식회사 Power saving method in ad-hoc network, and electronic device performing thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1665208A (en) * 2003-12-24 2005-09-07 索尼株式会社 Wireless communication system, wireless communication device, wireless communication method and computer program
WO2006033443A1 (en) * 2004-09-21 2006-03-30 Canon Kabushiki Kaisha Communication apparatus and communication method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1665208A (en) * 2003-12-24 2005-09-07 索尼株式会社 Wireless communication system, wireless communication device, wireless communication method and computer program
WO2006033443A1 (en) * 2004-09-21 2006-03-30 Canon Kabushiki Kaisha Communication apparatus and communication method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LAN MAN Standards Committee of the IEEE ComputerSociety.information technology-telecommunications and informationexchange between systems-local and metropolitan areanetworks-specific requirements-part11: wireless LAN MediumAccess Control(MAC) and physical layer(PHY) specifications.IEEE Std 802.11 1999 Edition.1997,第128页-137页. *

Also Published As

Publication number Publication date
CN101202984A (en) 2008-06-18

Similar Documents

Publication Publication Date Title
JP4295745B2 (en) Power saving method in distributed wireless network
EP2188955B1 (en) Deep sleep mode for mesh points
CN1898900B (en) Supporter, client and corresponding method for power saving in a wireless local area network
CN1918860B (en) A system and method for hibernation mode for beaconing devices
CN100505730C (en) Method and system for power-saving in a wireless local area network
US20150245290A1 (en) Node control method, network controller, and network system
KR101450910B1 (en) Time slot allocation method for reduction of energy losses in wireless sensor network
CN104378812B (en) Farmland self-organizing network regenerative resource node difference topology control method
CN102227152B (en) Power saving management method of Ad Hoc network points and system thereof, and mobile terminals
Yadav et al. Optimized medium access control for wireless sensor network
CN101202984B (en) Method, system for power-saving management of Ad Hoc network node and mobile terminal
CN101466160B (en) Method and system for saving energy of wireless netted network node
Hu et al. Energy-efficient scheduling strategies in IEEE 802.11 wireless LANs
Liao et al. An asynchronous MAC protocol for wireless sensor networks
Gong et al. An event driven TDMA protocol for wireless sensor networks
CN102917467A (en) Asynchronous reservation channel access method of wireless sensor network
Liao et al. An adaptive MAC protocol for wireless sensor networks
CN106507440B (en) Sensor network system, networking and information interaction method
Hou et al. An improved MAC protocol for wireless sensor networks
KR20210085298A (en) Wireless communiction method using routing metric for energy-efficient and low-delay path selection in duty-cycled wireless sensor network
Yeh et al. Reconfigurable energy-efficient wireless sensor networks for real-time data acquisition
Kwon et al. Asynchronous power management scheme for wireless ad-hoc networks
Idoudi et al. Power Aware Alternation: a novel power saving mechanism for ad hoc networks
Huang et al. SCPS: A self-configuring power-saving protocol for wireless ad hoc networks
Nam Dynamic Adjustment of Ad hoc Traffic Indication Map (ATIM) window to save Power in IEEE 802.11 DCF

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant