CN104053218A - Wireless Communication Method, Wireless Device And Wireless Coordinator - Google Patents
Wireless Communication Method, Wireless Device And Wireless Coordinator Download PDFInfo
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- CN104053218A CN104053218A CN201410097824.5A CN201410097824A CN104053218A CN 104053218 A CN104053218 A CN 104053218A CN 201410097824 A CN201410097824 A CN 201410097824A CN 104053218 A CN104053218 A CN 104053218A
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- 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
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- 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
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Abstract
The invention provides a wireless communication method, a wireless device and a wireless coordinator. Wireless communication in a wireless network comprises a wireless device communicating power save capability information with a coordinator during a discovery state. A beacon that indicates a configuration state is received by the wireless device. Configuration status information is sent to the coordinator. A configuration request is received by the wireless device from the coordinator for entering or exiting the power save mode.
Description
The application requires in the 61/788th of submission on March 15th, 2013, No. 517 U.S. Provisional Patent Application, on November 12nd, 2013 submit to the 14/078th, the priority of No. 323 U.S. Provisional Patent Application and the 10-2014-0018433 korean patent application submitted on February 18th, 2014, described application is all contained in this by reference.
Technical field
One or more embodiment relates generally to the low delay deterministic network (LLDN) in Wireless Personal Network (WPAN), more specifically incites somebody to action, and relates to the economize on electricity for the LLDN device of WPAN.
Background technology
The IEEE802.15.4e standard of announcing for 2012 comprises the support to low delay deterministic network (LLDN).LLDN is defined as being organized as the individual territory net (PAN) with superframe structure and use LLDN frame of Star Network.The LLDN mechanism of IEEE802.15.4 has been brought many benefits for application-specific.These application need to send in low delay and reliable cycle from sensor device (such as ECG transducer) to PAN telegon.LLDN superframe structure allows greatly to reduce the use of the implicit addressing of medium access control (MAC) control overhead.LLDN also provides at the preassignment time slot of LLDN device the channel access of guaranteeing, makes crucial sensing data to report to telegon in timely mode.
LLDN superframe comprises a plurality of time slots that send/resend for data.According to current standard, if device does not need to resend the failed frame occurring in last superframe, device only need to send once (suppose device has the data that will send) at the own uplink time slot of device, but device must keep switching on during the uplink time slot of other device or two-way time slot.
Summary of the invention
One or more embodiment relates to the radio communication in a kind of wireless network.In one embodiment, during a kind of method is included in Discovery Status, wireless device is passed on power saving capability information to telegon.In one embodiment, by wireless device, received the beacon of indicating allocation state.In one embodiment, configuration status information is sent to telegon.In one embodiment, by wireless device, from telegon, receive configuring request, to enter or to exit energy-saving mode.
In one embodiment, a kind of wireless device comprises: physical layer (PHY), via radio communication channel, carry out radio communication; Medium access control (MAC) layer; Power-saving module is passed on power saving capability information to telegon during Discovery Status.In one embodiment, the beacon of the indicating allocation state of power-saving module based on receiving sends to telegon by configuration status information, and receives configuring request from telegon, to enter or to exit energy-saving mode.
In one embodiment, a kind of wireless telegon comprises: physical layer (PHY), via radio communication channel, carry out radio communication; Medium access control (MAC) layer, management transmission to a plurality of radio stations via wireless channel.In one embodiment, telegon receives power saving capability information from wireless device during Discovery Status, the beacon that comprises the request of configuration status information is sent to wireless device, from wireless device, receive configuration status, and configuring request is sent to wireless device, so that wireless device enters or exits energy-saving mode.
By with reference to following description, claims and accompanying drawing, these and other features, aspect and the advantage of one or more embodiment will be understood.
Accompanying drawing explanation
Fig. 1 illustrates the diagram for wireless low delay deterministic network (LLDN) system of the star configuration of one or more embodiment.
Fig. 2 illustrates example OSI(Open Systems Interconnection) layer diagram.
Fig. 3 illustrates the example LLDN superframe with dedicated time slot.
Fig. 4 illustrates the example LLDN superframe with the dedicated time slot that comprises group acknowledge (GACK) time slot.
Fig. 5 illustrates LLDN device and changes between difference transmission state.
Fig. 6 illustrates superframe and first method for resending with dedicated time slot.
Fig. 7 illustrates superframe and second method for resending with dedicated time slot and GACK time slot.
Fig. 8 and Fig. 9 illustrate the form for low delay (LL) beacon frame.
Figure 10 illustrates the form for the LL beacon frame revised according to embodiment.
Figure 11 illustrates according to not existing of embodiment and shows for determining the superframe structure of GACK time slot of the availability of dormancy duration.
Figure 12 illustrates the flow chart of determining the dormancy duration according to the end in the communication of LL beacon frame of embodiment.
Figure 13 illustrates the flow chart of determining the dormancy duration according to the end for the management time slot in superframe communication of embodiment.
Figure 14 illustrates and for the end that resends time slot of the distribution in superframe communication, determines the flow chart of dormancy duration according to embodiment.
Figure 15 illustrates the superframe structure for the GACK time slot of the availability of definite dormancy duration according to the existence demonstration of embodiment.
Figure 16 illustrates the flow chart of determining the dormancy duration according to the end of the uplink time slot for the distribution in superframe communication of embodiment.
Figure 17 illustrates the flow chart of determining the dormancy duration according to the end for the GACK time slot in superframe communication of embodiment.
Figure 18 illustrates the flow chart of determining the dormancy duration according to the end that resends time slot for the distribution after the GACK time slot in superframe communication of embodiment.
Figure 19 illustrates the flow chart of determining the dormancy duration according to the end of the two-way time slot for the distribution in superframe communication of embodiment.
Figure 20 illustrates according to the time attribute of the time slot of embodiment.
Figure 21 illustrates to comprise for realizing the illustrative high-level block diagram of information processing system of the computer system of disclosed embodiment.
Embodiment
One or more embodiment provides LLDN device when LLDN device does not send frame/not for example, from telegon (, PAN telegon) received frame to enter resting state (for example, energy-saving mode).One or more embodiment provide telegon determine by current operation or measure with next operation or measurement between while there is inactive time period of pre-fixed length the some or all of LLDN devices of telegon order enter resting state.One or more embodiment provides LLDN device and enters resting state in the situation that needn't create other command frame.
One or more embodiment relates to for example, radio communication in wireless network (, the LLDN in PAN).In one embodiment, during a kind of method is included in Discovery Status, wireless device is passed on energy-conservation ability information to telegon.In one embodiment, the beacon of indicating allocation state is received by wireless device.In one embodiment, configuration status information is sent to telegon.In one embodiment, wireless device receives configuring request to enter or to exit energy-saving mode from telegon.
Fig. 1 illustrates the diagram for wireless low delay deterministic network (LLDN) system 10 of the star configuration of one or more embodiment.About network capabilities, two kinds of topologys of IEEE802.15.4 standard definition.One of two kinds of topologys are substantially star-like shown in system 10.All communications between node must be passed through central coordinator node.
Fig. 2 illustrates example OSI(Open Systems Interconnection) layer diagram 300.IEEE802.15.4 standard definition physical layer (PHY) (layer 1) and the medium access control (MAC) layer (sublayer of data link layer 2) of OSI(Open Systems Interconnection) model of network operation.PHY layer 1 has defined frequency, power, modulation and other radio condition of link.(layer 2) MAC layer has defined the form of data processing and has been responsible for that packet is moved to device or from device Mobile data bag (packet is moved to device and packet is moved to network interface unit from device from network interface unit by shared channel).In one example, MAC layer is guaranteed not clash through the signal from different radio device of same channel by MAC agreement.Remaining layer (3 to 7) has defined for the treatment of other measure of data and has comprised that the related protocol of final application strengthens.
As used in one or more embodiment, IEEE802.15.4 standard is only used the front two-layer all upper layer communication that add logic link control (LLC) and service specific convergence sublayer (SSCS) interpolation and other standard definition.Data link layer 2 be between the adjacent network node in wide area network (WAN) or same local network (LAN) section or PAN on node between transmit the protocol layer of data.Data link layer 2 is provided for transmitting function and the timer of data between network entity, and can be provided for detecting and can correct the wrong device that may occur in physical layer 1.SDL be exemplified as the multinode for LAN() Ethernet, peer-peer protocol (PPP), the HDLC connecting for point-to-point (binode) and ADCCP etc.
This locality of frame between data link layer 2 and device on identical LAN or PAN is transmitted relevant.These protocol Data Units are called data link frame, and data link frame does not surmount the boundary of local area network (LAN).Internet route and overall addressing are higher functions, allow SDL to concentrate on local transmission, addressing and medium arbitration.By this way, data link layer 2 as possible in competition, medium is conducted interviews in many ways between arbitrate, and be indifferent to their final destination.
When device is attempted simultaneously working medium, there is frame conflict.How SDL specified device detects conflict and recovers from these conflicts, and the mechanism that reduces conflict or avoid a conflict can be provided.Layer 2 device are influenced by using clear and definite hardware address to the transmission of frame.The head of frame comprises indicates the frame source address of sending from which device and the destination-address of indicating which device expection reception and processed frame.Compare with routable address with the classification of network layer 3, layer 2 address equality, mean that all parts of address are all not useable for identification address affiliated logical groups or physical set.Data link layer 2 provides the data by physical link layer 1 to transmit.This transmission may be reliable or insecure; Many SDLs do not have the confirmation that successful frame is received and accepted, some SDLs even may not have any type of for check send wrong verification and.In these cases, higher agreement must provide flow process control, error detection and confirmation and resend.
Fig. 3 illustrates the example LLDN superframe 400 with dedicated time slot that can be used by one or more embodiment.Superframe 400 comprises the macLLDNnumTimeSlots time slot sending for data.In typical LLDN, for example, if device (, wireless LLDN device) do not need to resend the failed frame occurring in last superframe, device only need send once (suppose device has the data that will send) in oneself uplink time slot, but device must be switched on during the uplink time slot of other device or two-way time slot in maintenance.Device keeps energising waste energy during the time slot of other device, especially all the more so when the quantity of data slot is large.
Typical LLDN network use from IEEE802.15.4-2011 or before IEEE802.15.4-2011, define leave over the different superframe structure of superframe structure.As shown in superframe 400, typical LLDN superframe is divided into beacon slot, the time slot of 0 or 2 a plurality of equal length of managing time slot and sending for data.The first time slot of each superframe comprises low delay (LL) beacon frame always existing.LL beacon frame is for synchronizeing with superframe 400 structures.LL beacon frame is also subsynchronous again for what install.LL beacon slot can be followed by two management time slots, and one for down link, and one for up link.Management time slot can be configured by macLLDNmgmtTS PIB parameter (PAN information basic parameter) during configuration status (see figure 5).Remaining time slot (that is, data slot) is assigned to the LLDN device in network.
The characteristic feature of data slot comprises following content.Each time slot may distribute the so-called gap owner (slot owner).The gap owner has access privileges in time slot (dedicated time slot).If the gap owner sends in its time slot, in frame, do not need explicit addressing.The quantity by time slot of determining of transmit leg realizes.More than one device can be distributed to time slot (shared group time slot).Device is used the access method (CSMA-CA of modification) based on competition and has the simple addressing scheme of 8 (8-bit) addresses in shared group time slot.The basic time slot of a plurality of vicinities can be connected to single larger time slot.
Data slot also can be divided into two parts: uplink time slot and two-way time slot.The LLDN mechanism of IEEE802.15.4 standard has been brought many benefits for application-specific.These application need to send in low delay and reliable cycle from sensor device (such as ECG transducer) to PAN telegon.LLDN superframe structure allows the use of the implicit addressing of very big low minimizing MAC control overhead.LLDN also provides at the preassignment time slot of LLDN device the channel access of guaranteeing, makes crucial sensing data to report to telegon in timely mode.
Fig. 4 illustrates the example LLDN superframe 500 with the dedicated time slot that comprises group acknowledge (GACK) time slot that can be used by one or more embodiment.The macLLDNnumRetransmitTS time slot that superframe 500 comprises macLLDNnumUplinkTS uplink time slot (two-way communication, from LLDN device to LLDN telegon) and can be preserved at first resending according to the GACK field comprising LL beacon.Also can use independent GACK frame, to realize resending of unsuccessfully sending in the uplink time slot in identical superframe 500.The use of independent GACK frame is configurable during configuration status (Fig. 5).If the use of independent GACK is arranged to superframe 400, the structure of superframe 500 as a result of.
GACK frame comprises bitmap to indicate the up link of success and failure to send by sending identical order with up link.In this case, resend time slot immediately following after GACK time slot.Superframe 500 also comprises the two-way time slot of macLLDNnumBidirectionalTS for up link or downlink communication.The sending direction of sending direction field indication all two-way time slots during this superframe 500 of the tag field in LL beacon.If sending direction field is set to 0, the direction of all two-way time slots is up link.If sending direction field is set to 1, the direction of all two-way time slots is down link.Note, two-way time slot is mainly used in PAN telegon descending chain circuit frame is sent to device.
The sending direction of two-way time slot is along with each LLDN superframe 500 replaces.For example, if the sending direction of the two-way time slot of superframe 500 is down link, the sending direction of the two-way time slot of next superframe 500 is necessary for up link, for making device that LL-acknowledgement frame is sent it back to PAN telegon.In addition, the identical two-way time slot that the transmission of LL-acknowledgement frame should receive LL-data in next superframe 500 starts.
At the LLDN device that does not receive Frame from LLDN PAN telegon during two-way time slot, can Frame be sent to LLDN PAN telegon during sending direction position is set to the superframe 500 of up link.To in the LL beacon at next superframe 500, confirm Frame.
Fig. 5 illustrates the LLDN device conversion diagram 600 of the different transmission states of demonstration that used by one or more embodiment.LLDN device is in one of three states (discovery, configuration and online) lower operation.Discovery Status is the first step during network settings; New equipment is found and is configured in second step (configuration status).After configuration status is successfully completed, network can enter into presence.Data and can being only sent out during presence from reading of LLDN device.In order to reconfigure network, configuration status can start again.In the conversion between different conditions shown in diagram 600.
Discovery Status is the first step during LLDN arranges or for adding new equipment to existing network.Under transmission state, superframe (for example, the superframe 400 of Fig. 3 and the superframe 500 of Fig. 4) only comprises for the time slot of beacon and two management time slots, and one for down link, and one for up link.New equipment scanning different channels is until the LLDN PAN telegon of the beacon that sends indication Discovery Status detected.If new equipment receives the beacon of indication Discovery Status, when up link is managed, gap device is attempted access medium, to discovery response frame is sent to LLDN PAN telegon.Find the current configuration that response frame comprises device.New equipment should repeat to send finds response frame until the acknowledgement frame or the Discovery Status that receive for it are stopped by LLDN PAN telegon.If LLDN PAN telegon does not receive any discovery response frame in several seconds of the macLLDNdiscoveryModeTimeout of superframe field indication, LLDN PAN telegon changes to configuration status from Discovery Status.
Configuration status is the second step during network settings.Configuration status also reconfigures for network.Under configuration status, superframe only comprises for the time slot of beacon and two management time slots, and one for down link, and one for up link.If device receives the beacon of indicating allocation state,, at up link management time slot, device is attempted to obtain the access of transmitting medium to configuration status frame is sent to LLDNPAN telegon.The current configuration that configuration status frame comprises device.New equipment should repeat to send configuration status frame, until receive configuring request frame or configuration status is stopped by LLDN PAN telegon.Configuring request frame comprises the new configuration for receiving system.After successfully receiving configuring request frame, device sends to LLDN PAN telegon by acknowledgement frame.
User data is only sent out during presence.Superframe starts with beacon and is followed by some time slots.Device can send their data during the time slot of distributing to them during configuration status.Existence and the length of the management time slot under presence are indicated by configuring request frame.Once enter presence, configuration will still remain unchanged, until network enters configuration status again.LLDN PAN telegon is received in the success of Frame in the GACK bitmap of LL beacon frame of next superframe or in independent data group acknowledge frame and is identified.This is that sending direction is the situation downlink and uplink time slot of up link and the situation of two-way time slot.
If resending time slot is configured (that is, macLLDNnumRetransmitTS>0), to resend time slot and be assigned to the owner that corresponding positions in group acknowledge bitmap is set to a macLLDNnumRetransmitTS of 0.Each LLDN device should be carried out in order to determine the algorithm of its sending time slots.LLDN PAN telegon must be carried out Similarity algorithm to determine the transmit leg that resends the frame in time slot.Note, in the situation that unsuccessfully send the quantity of (NFT), be less than macLLDNnumRetransmitTS, it is feasible resending.If NFT is equal to or greater than macLLDNnumRetransmitTS, resend infeasiblely, this is because there is not enough preallocated time slots that resends.
The LLDN device that is assigned to two-way time slot (sending direction is down link) is received in next superframe and is confirmed by the explicit acknowledgement frame of corresponding LLDN device the success of Frame.This means, after the sending direction position in beacon is set to down link and Frame is sent to one or more LLDN device, LLDN PAN telegon should be set to up link in sending direction position in the superframe of closelying follow.The LLDN device that is assigned to two-way time slot that successfully receives Frame from LLDN PAN telegon during last superframe should send to acknowledgement frame LLDN PAN telegon.The LLDN device that does not receive Frame from LLDN PAN telegon can send to Frame LLDN PAN telegon during sending direction position is set to this superframe of up link.
Fig. 6 illustrates the superframe with dedicated time slot 700 and the first method for resending of using as one or more embodiment.Superframe 700 does not comprise GACK time slot.For the first method sending, use time slot S1, Sr and Sr+1 as indicated in square frame.
Fig. 7 illustrates the superframe 800 with dedicated time slot and GACK time slot and the second method for resending of using as one or more embodiment.Superframe 800 comprises GACK time slot.For the second method resending, use time slot GACK, Sn-r+1 and Sn as indicated in square frame.
Fig. 8 and Fig. 9 illustrate the form for typical LL beacon frame 900 and 1000.LL beacon frame shown in 900 and 1000 carries for determining the abundant information of beacon interval and superframe length.As shown in frame, beacon frame 900 and 1000 comprises for the field of time slot size, the quantity of the basic time slot of the quantity of the basic time slot of superframe (not comprising beacon slot and management time slot) and each management time slot.
Figure 10 illustrates the form 1100 for the LL beacon frame 1110 revised according to embodiment.In one embodiment, LL beacon frame 1110 comprises the added field of controlling for dormancy.In one embodiment, dormancy control field 1120 comprises three son fields: bitmap is controlled in mark, dormancy duration and dormancy.In one embodiment, mark son field 1130 comprises and comprises a plurality of son fields that retain son field.In one embodiment, sleeping/waking son field has one and indication device after processing beacon 110 and answers dormancy or should wake up in length.In one embodiment, when sleeping/waking position is set to 0, the action of request is dormancy at once after receiving LL beacon frame 1110; When sleeping/waking position is set to 1, the action of request wakes up and keeps waking up from receiving LL beacon frame 1110, until next LL beacon frame 1110 is placed in resting state by device again.
In one embodiment, all devices that the action of all device son field indication sleeping/wakings is applied in LLDN are still only applied to some devices in LLDN.In one embodiment, when all device son fields are set to 1, sleeping/waking action is applied to all devices in LLDN, and can ignore dormancy and control bitmap son field 1140.In one embodiment, when all device son fields are set to 0, sleeping/waking action is applied to some devices and dormancy control bitmap son field need to be processed, to determine which device need to carry out the action of indicating in sleeping/waking son field.
In one embodiment, the dormancy duration exists son field indication dormancy Duration Information whether will to be present in the rear portion of dormancy control field 1120.In one embodiment, when action is set to wake up, do not need to exist dormancy duration son field.In one embodiment, when action is set to dormancy, there is dormancy duration son field.
In one embodiment, dormancy control bit strivies for survival whether will be present in the rear portion of dormancy control field 1120 in son field indication dormancy control bitmap son field.In one embodiment, when all device son fields are set to 1, do not need to exist the dormancy in dormancy control field 1120 to control bitmap son field.In one embodiment, when all device son fields are set to 0, exist dormancy to control bitmap son field.In one embodiment, the position 4 of mark son field 1,130 7 retains for using in the future to position.
The dormancy duration field of dormancy control field in one embodiment, 1120 is determined the duration of dormancy time section.In one embodiment, the duration based on superframe length number measured and scope from 0 to 255.In an example embodiment, before value 10 is illustrated in and wakes to check next LL beacon frame 1110 up, device is answered dormancy 10 superframes.Note, this son field is only applied to dormancy action, shall not be applied to wake actions.
The device of bitmap son field indication application sleeping/waking action is controlled in the dormancy of dormancy control field in one embodiment, 1120.In one embodiment, the bit representation of each device in bitmap, every bit position equals the timeslot number that device is assigned with and deducts 1.In an example embodiment, if device assigned slot #n, the position (n-1) of this device in bitmap represents.When position is set to 1, this represents that sleeping/waking action is applied to this device.When position is set to 0, this represents that sleeping/waking action shall not be applied to this device.
In one embodiment, when using particular command frame, command frame should carry the dormancy control field shown in LL beacon frame 1110 in its command frame payload.In one embodiment, command frame need to be assigned with new frame subtype.In one embodiment, the destination-address of command frame should be set to broadcast address, thereby all devices all need it to process.In one embodiment, can manage transmission command frame in time slot or in two-way time slot (when sending direction is set to down link) at down link.
In one embodiment, once enter energy-saving mode during configuration status, during presence, dispose the LLDN device of power saving capability (for example, can sleeping/waking) and can between two electricity-saving states (state of activation and resting state), change.In one embodiment, the factor that device can be based on different and enter resting state.In one embodiment, determine when device under energy-saving mode enters the time of resting state and the length of dormancy duration and need to consider following factor: whether have management time slot; Whether existence resends time slot; For this device, what the uplink time slot of distribution is; Whether existence group ACK time slot (if existence group ACK time slot, whether this device has the failed transmission that need to be resend (if having the failed transmission that need to be resend so, for this device, for the time slot of the distribution that resends, what is)); (if there is two-way time slot, two-way time slot is uplink time slot or downlink time slots (if uplink time slot, whether this device has distributed the time slot for sending) whether two-way time slot.
In one embodiment, LLDN battery saving arrangement should enter resting state in the following moment:
1) if there is not management time slot in superframe, when LL beacon frame 1110 finishes;
2) if there is management time slot in superframe, when management time slot finishes;
3) as shown at LL beacon frame 1110, if need to resend, when the resending time slot and finish of the distribution of device;
4) when the up link sending time slots of the distribution of installing in superframe finishes;
5) if be not scheduled as and resend immediately following the time slot after GACK time slot in superframe, when GACK time slot finishes;
6) in superframe during the resending time slot and finish of its after GACK time slot oneself;
7) when in superframe, the two-way time slot of its distribution finishes.
In one embodiment, if sending direction is set to up link, LLDN battery saving arrangement should enter state of activation (that is, waking up) in the following moment:
1) if need to resend, in superframe its distribution resend time slot before;
2) in superframe before the up link sending time slots of its distribution;
3) if configured GACK in superframe, before GACK time slot;
4) in superframe its after GACK time slot oneself resend time slot before;
5) if device is configured to down link in superframe, before two-way time slot;
6) if be configured to up link and this device has been assigned with two-way time slot in superframe, before its oneself two-way time slot;
7) in superframe before next LL beacon frame 1110.
In one embodiment, in LLDN, PAN telegon has for confirming two kinds of selections of the frame that device sends: use the group acknowledge field of LL beacon frame 1110 or use the independent group acknowledge frame (this group ACK time slot is certainly as downlink time slots) in the group ACK time slot of uplink time slot in the time period.In one embodiment, even if independent GACK frame is used, the LL beacon frame 1110 in LLDN also always carries GACK field.
In one embodiment, device and PAN telegon need exchange message, such as device, whether support when LLDN electricity-saving function and device want to enter or exit energy-saving mode.In one embodiment, LLDN device is reported its LLDN power saving capability during Discovery Status.In one embodiment, under Discovery Status, new equipment scans different channels, until it detects the LLDN PAN telegon of the beacon that sends indication Discovery Status.In one embodiment, if new equipment receives the LL beacon frame 1110 of indication Discovery Status, this new equipment is attempted access medium in up link management time slot, to discovery response frame is sent to LLDN PAN telegon.
In one embodiment, find the current configuration that response frame comprises device.In one embodiment, find the command frame that response frame is format as shown in table 1.
Table 1
| Eight bit byte: 1 | Variable |
| Command frame identifier | Find parameter |
In one embodiment, in order to report LLDN power saving capability, parameter L LDN power saving capability is added to typical parameter list.In one embodiment, the data type of LLDN power saving capability parameter can be Boolean type, and wherein, value TRUE indicating device has the ability of LLDN economize on electricity, and value FALSE indicating device can not be carried out LLND economize on electricity.In one embodiment, the discovery parameter list of modification is as follows:
1) full MAC Address;
2) for example, by time slot duration (, the size of payload data) of the needs of the application definition installing;
3) up link/bi-directional type designator;
4) LLDN power saving capability.
In one embodiment, be desirably in the LLDN device operating under energy-saving mode uses discovery response frame to indicate this ability to PAN telegon during Discovery Status.In one embodiment, LLDN device by notifying telegon and entering/exit energy-saving mode from telegon confirmation of receipt during configuration status.In one embodiment, when device receives the beacon of indicating allocation state, device is attempted to obtain the access to transmitting medium in up link management time slot, to configuration status frame is sent to LLDN PAN telegon.In one embodiment, as shown in table 2, configuration status frame is the command frame that comprises configuration parameter, wherein, this this device in, the input of the configuration process of the current basis of described configuration parameter in LLDN is configured.
Table 2
| Eight bit byte: 1 | Variable |
| Command frame | Configuration parameter |
In one embodiment, in order to enter/exit LLDN energy-saving mode, add other parameter (that is, LLDN energy-saving mode parameter) to canonical parameter list.In one embodiment, the data type of the parameter of adding can be Boolean type, wherein, value TRUE indicating device is asking to enter LLDN energy-saving mode, and value FALSE indicating device is asking to exit LLDN energy-saving mode (even or device have energy-saving mode ability also do not enter the intention of energy-saving mode).In one embodiment, the configuration parameter of modification is listed as follows:
1) whole MAC Address;
2) short MAC Address;
3) for example, by time slot duration (, the size of payload data) of the needs of the application definition installing;
4) distribute the up link/bidirectional data communication of time slot;
5) LLDN energy-saving mode.
In one embodiment, when receiving configuration status command frame from LLDN device, telegon need to determine whether permission device is entered or exit energy-saving mode.In one embodiment, PAN telegon is realized this operation by configuring request command frame being sent it back to the LLDN device of request under configuration status.In one embodiment, the order payload of configuring request frame is shown in table 3.
Table 3
| Eight bit byte: 1 | Variable |
| Command frame identifier | Configuration parameter |
In one embodiment, configuring request order is included in the configuration parameter that receiving system should use during presence.In one embodiment, only during configuration status, the configuration status frame in response to the device receiving sends this order by LLDN PAN telegon.
In one embodiment, in order to allow/do not allow device to enter/exit LLDN energy-saving mode, other parameter is added to canonical parameter list.In one embodiment, other parameter is LLDN energy-saving mode parameter.In one embodiment, the data type of LLDN energy-saving mode parameter can be Boolean type, wherein, value TRUE indicating device is endowed the right that enters LLDN energy-saving mode, and value FALSE indicating device is not allowed to enter LLDN energy-saving mode (or the device request of exiting energy-saving mode is identified).In one embodiment, the configuration parameter of modification is listed as follows:
1) whole MAC Address;
2) short MAC Address;
3) transmitting channel;
4) existence of management frames
5) the time slot duration;
6) time slot distributing;
7) LLDN energy-saving mode.
Figure 11 illustrates according to not existing of embodiment and shows for determining the superframe structure 1200 of GACK time slot of the availability of dormancy duration.In one embodiment, for the ease of following discussion, the duration of Sleep_Duration indication device (for example, the LLDN wireless device under energy-saving mode) dormancy during resting state.In an example embodiment, all time slots equate in length and the duration of single time slot is represented by TS_Duration.In one embodiment, in the configuring request frame being sent by PAN telegon, TS_Duration is preconfigured (for example, " time slot duration " parameter) under configuration status.
In one embodiment, in order to assist to describe the flow chart shown in Figure 12 to Figure 14, when there is GACK field and do not have group ACK time slot in LL beacon frame in superframe structure 1200, use superframe structure 1200.In an example embodiment, for the availability of the quantity in 1200 definite dormancy duration of superframe structure, list as follows:
N=macLLDNnumUplinkTS, macLLDNnumUplinkTS is MAC PIB attribute;
M=macLLDNnumBidirectionalTS, macLLDNnumBidirectionalTS is MAC PIB attribute;
Q=macLLDNnumRetransmitTS, macLLDNnumRetransmitTS is MAC PIB attribute;
The distribution of the device that j=can calculate from the group acknowledge field of LL beacon resend time slot;
The sending time slots of the distribution of i=device in the configuring request frame being sent by PAN telegon, is preconfigured the sending time slots (" distribution time slot " parameter) of the distribution of device under configuration status.
The order of k=time slot, during time slot, device is from PAN telegon receiving downlink LL Frame.For example, if device receives LL data at the 3rd two-way time slot, device need to send up link LL acknowledgement frame by the 3rd two-way time slot in next superframe.
Figure 12 illustrate according to embodiment for determining the flow chart 1300 of dormancy duration when the LL beacon frame sign off.In one embodiment, after receiving and processing LL beacon frame 1110, LLDN battery saving arrangement determines whether enter resting state, if LLDN battery saving arrangement determines to enter resting state, determines how long Sleep_Duration will be.Flow chart 1300 illustrates for determine the functional sequence of dormancy duration when LL beacon frame 1110 finishes.Note, battery saving arrangement can wake up due to different events, such as:
1) if do not configure and resend time slot in superframe 1200, install and will before the up link sending time slots in its distribution, wake (Sleep_Duration calculating in the frame A in flow chart 1300) up;
2) if exist and to resend time slot but this device does not need to resend, install and will before the up link sending time slots in its distribution, wake (Sleep_Duration calculating in the frame B in flow chart 1300) up;
3) if exist and to resend time slot and this device need to resend, install by its distribution resend time slot before wake (Sleep_Duration calculating in the frame C in flow chart 1300) up;
In flow chart 1300, the timeslot number (i time slot) sending for up link of the distribution that i is this device; J be device distribution resend timeslot number (j time slot); Q=macLLDNnumRetransmitTS(, resends the sum of time slot).In one embodiment, flow chart 1300 starts to receive LL beacon frame 1110.In one embodiment, if there is macLLDNmngmtTS, device remains under state of activation, until management time slot finishes, otherwise determine whether to exist, resends TS.In one embodiment, if there is no resend TS, use frame A(i-1x TS_Duration) determine the dormancy duration.Otherwise in one embodiment, whether determining device needs resends.In one embodiment, if device does not need to resend, use frame B(q x TS_Duration+ (i-1) x TS_Duration) determine the dormancy duration.In one embodiment, if determining device does not need to resend, the dormancy duration is set to (j-1) x TS_Duration in frame C.Device enters resting state dormancy within definite dormancy duration subsequently after LL beacon frame 1110.
Figure 13 illustrates the flow chart 1400 of determining the dormancy duration while finishing according to the management time slot in superframe communication of embodiment.In one embodiment, after receiving and processing management frames, LLDN battery saving arrangement determines whether when management time slot finishes, to enter park mode, if enter park mode when management time slot finishes, determines how long Sleep_Duration will be.Flow chart 1400 illustrates the functional sequence of determining the dormancy duration while finishing for the management time slot at superframe 1200.In one embodiment, note, battery saving arrangement can wake up because of different events, such as:
1) if be not configured resend time slot, install and will before the up link sending time slots in its distribution, wake (Sleep_Duration calculating in the frame A in flow chart 1400) up;
2) if exist and to resend time slot but this device does not need to resend, install and will before the up link sending time slots in its distribution, wake (Sleep_Duration calculating in the frame B in flow chart 1400) up;
3) if exist and to resend time slot and this device need to resend, install by its distribution resend time slot before wake (Sleep_Duration calculating in the frame C in flow chart 1400) up.
In flow chart 1400, the timeslot number (i time slot) sending for up link of the distribution that i is this device; J be device distribution resend timeslot number (j time slot); Q=macLLDNnumRetransmitTS(, resends the sum of time slot).In one embodiment, flow chart 1400 starts to receive management frames.In one embodiment, if there is no resend TS, use frame A(i-1x TS_Duration) determine the dormancy duration.Otherwise in one embodiment, whether determining device needs resends.In one embodiment, if device does not need to resend, use frame B(q x TS_Duration+ (i-1) x TS_Duration) determine the dormancy duration.In one embodiment, if determining device need to resend, the dormancy duration is set to (j-1) x TS_Duration in frame C.Device enters resting state dormancy within definite dormancy duration subsequently after management time slot finishes.
Figure 14 illustrates the flow chart 1500 of determining the dormancy duration when time slot finishes that resends for the distribution in superframe communication according to embodiment.In one embodiment, resending of distributing after time slot sends, LLDN battery saving arrangement determines whether at it, resend when time slot finishes and enter resting state, if resend when time slot finishes and enter resting state at it, determine how long Sleep_Duration will be.Flow chart 1500 illustrates the functional sequence of determining the dormancy duration when time slot finishes that resends for the distribution at superframe 1200.
In flow chart 1500, the timeslot number (i time slot) sending for up link of the distribution that i is this device; J be device distribution resend timeslot number (j time slot); Q=macLLDNnumRetransmitTS(, resends the sum of time slot).In one embodiment, flow chart 1400 starts (wherein, the dormancy duration is set to 0) resending when time slot finishes.In one embodiment, LLDN battery saving arrangement by (q-j) x TS_Duration other resend dormancy during time slot, and the up link sending time slots dormancy in (i-1) x TS_Duration before its oneself time slot arrives.Note, LLDN battery saving arrangement will wake up before the uplink time slot of its distribution always, to check whether it has any content that sends to PAN telegon.In one embodiment, need to guarantee low delay communication.
Figure 15 illustrates the superframe structure 1600 for the GACK time slot of the availability of definite dormancy duration according to the existence demonstration of embodiment.In one embodiment, after the up link sending time slots distributing sends, LLDN battery saving arrangement determines whether when up link sending time slots finishes, to enter resting state, if enter resting state when up link sending time slots finishes, determine how long Sleep_Duration will be.Note, configurable during configuration mode although IEEE802.15.4 standard (4e) is mentioned the use of independent GACK, this standard does not provide the details of how to distribute about GACK time slot.In an example embodiment, suppose that LLDN will be used GACK frame in GACK field in LL beacon or independent time slot as confirmation method, but both not in LLDN superframe.In one embodiment, suppose to retain r after GACK time slot and resend time slot.Therefore, in one embodiment, GACK time slot is (n-r) the individual time slot in uplink time slot, wherein, and the sum that n is uplink time slot.Note, in time slot (n-r), send GACK frame.Can from the GACK frame receiving, obtain number p group ACK time slot.Also can be as obtained other number before for as described in Figure 11.
Figure 16 illustrates the flow chart 1700 of determining the dormancy duration while finishing according to the uplink time slot for the distribution in superframe communication of embodiment.Flow chart 1700 illustrates for determine the functional sequence of dormancy duration when LL beacon frame 1110 finishes.In one embodiment, note, battery saving arrangement can wake up due to different events, such as:
1) if there is no the group ACK time slot of configuration, device need to check the direction of two-way time slot;
If a) direction is down link (from PAN telegon to device), device need to wake up and during the whole two-way time period, keep activating before the first two-way time slot arrives, and the receiving downlink of take sends (although device may not receive any Frame that destination is this device) (in the frame B in flow chart 1700, calculating Sleep_Duration).
B) if direction is up link:
If i. device is assigned with the uplink time slot in two-way time slot, device need to wake (in the frame D in flow chart 1700, calculating Sleep_Duration) up before the two-way time slot of its distribution;
If ii. device is not assigned with any uplink time slot, device need to wake (in the frame C in flow chart 1700, calculating Sleep_Duration) up before next LL beacon;
2), if group ACK time slot is configured, device need to wake (Sleep_Duration calculating in the frame A in flow chart 1700) up before group ACK time slot arrives.
In flow chart 1700, the time slot of the distribution in the two-way time slot that k is device; I is the timeslot number of the distribution sending for up link of this device; R is the sum that resends time slot after GACK time slot, and n is (macLLDNnumUplinkTS) (that is, sum of unidirectional uplink time slot); M be macLLDNnumBidirectionalTS(, the sum of two-way time slot).In one embodiment, flow chart 1700 is when up link (UL) sending time slots distributing finishes, and wherein, the dormancy duration is set to 0.In one embodiment, if GACK time slot is configured, use frame A in flow chart 1700 (sleep_duration+=[(n-r-1) – i] x TS_Duration) to determine the dormancy duration.In one embodiment, if GACK time slot is not configured, determine whether the direction of two-way time slot is up link.
In one embodiment, if the direction of two-way time slot is not up link, use frame B(sleep_duration+=(n – i) the x TS_Duration in flow chart 1700) determine the dormancy duration.In one embodiment, if the direction of two-way time slot is up link, whether determining device is assigned with the time slot in two-way time slot.In one embodiment, if device is not assigned with the time slot in two-way time slot, use the frame C(Sleep_Duration+=[n – i in flow chart 1700)+m] x TS_Duration) determine the dormancy duration.In one embodiment, if device is assigned with two-way time slot, use the frame D(sleep_duration+=[(n – i in flow chart 1700)+(k – 1)] x TS_Duration) determine the dormancy duration.Device enters resting state dormancy within definite dormancy duration subsequently when the uplink time slot distributing finishes.
Figure 17 illustrates the flow chart 1800 of determining the dormancy duration while finishing according to the GACK time slot in superframe communication of embodiment.In one embodiment, in GACK time slot, after PAN telegon receives GACK frame, LLDN battery saving arrangement determines whether when GACK time slot finishes, to enter resting state, if enter resting state when GACK time slot finishes, determine how long Sleep_Duration will be.Flow chart 1800 illustrates for determine the functional sequence of dormancy duration when GACK time slot finishes.
In flow chart 1800, the distribution that p is the device of indicating in GACK frame resend time slot; K is the time slot of the distribution in the two-way time slot of device; R is the sum that resends time slot after GACK time slot; N be macLLDNnumUplinkTS(, the sum of unidirectional uplink time slot); M be macLLDNnumBidirectionalTS(, the sum of two-way time slot).In one embodiment, flow chart 1800 is when GACK time slot finishes, and wherein, the dormancy duration is set to 0.In one embodiment, if device needs to resend after GACK time slot, use frame A(sleep_duration+=(p-1) the x TS_Duration in flow chart 1800) determine the dormancy duration.In one embodiment, if device need to not resend after GACK TS, determine whether the direction of two-way time slot is up link.
In one embodiment, if the direction of two-way time slot is not up link, use the frame B(sleep_duration+=r x TS_Duration in flow chart 1800) determine the dormancy duration.In one embodiment, if the direction of two-way time slot is up link, whether determining device is assigned with the time slot in two-way time slot.In one embodiment, if device is not assigned with the time slot in two-way time slot, use frame C(Sleep_Duration+=(r+m) the x TS_Duration in flow chart 1800) determine the dormancy duration.In one embodiment, if device is assigned with two-way time slot, use the frame D(sleep_duration+=[(r+ (k – 1) in flow chart 1800] x TS_Duration) determine the dormancy duration.Device enters resting state dormancy within definite dormancy duration subsequently when GACK time slot finishes.
Figure 18 illustrates the flow chart 1900 of determining the dormancy duration when time slot finishes that resends for the distribution after the GACK time slot in superframe communication according to embodiment.In one embodiment, resending after time slot sends of distribution after GACK time slot, whether LLDN battery saving arrangement determines when time slot finishes, to enter resting state resending, if enter resting state when time slot finishes resending, determine how long Sleep_Duration will be.Flow chart 1900 illustrates the functional sequence of determining the dormancy duration when time slot finishes that resends for the distribution after GACK time slot.
In flow chart 1900, the distribution that p is the device of indicating in GACK frame resend time slot (p in r); K is the time slot (k in m) of the distribution in the two-way time slot of device; R is the sum that resends time slot after GACK time slot; N be macLLDNnumUplinkTS(, the sum of unidirectional uplink time slot); M be macLLDNnumBidirectionalTS(, the sum of two-way time slot).In one embodiment, during flow chart 1900 resending time slot and finish after GACK time slot, wherein, the dormancy duration is set to 0.In one embodiment, if the direction of two-way time slot is not up link, use frame B(sleep_duration+=(r – p) the x TS_Duration in flow chart 1900) determine the dormancy duration.In one embodiment, if the direction of two-way time slot is up link, whether determining device is assigned with the time slot in two-way time slot.In one embodiment, if device is not assigned with the time slot in two-way time slot, use the frame C(Sleep_Duration=[(r – p in flow chart 1900)+m)] x TS_Duration) determine the dormancy duration.In one embodiment, if device is assigned with two-way time slot, use the frame D(sleep_duration=[(r – p in flow chart 1900)+(k – 1)] x TS_Duration) determine the dormancy duration.Device subsequently resending after GACK time slot enters resting state dormancy within definite dormancy duration when time slot finishes.
Figure 19 illustrates the flow chart 2000 of determining the dormancy duration while finishing according to the two-way time slot for the distribution in superframe communication of embodiment.In one embodiment, after the two-way time slot distributing sends, LLDN battery saving arrangement determines whether when two-way time slot finishes, enter resting state, if enter resting state when two-way time slot finishes, determines how long Sleep_Duration will be.Flow chart 2000 illustrates for determine the functional sequence of dormancy duration when two-way time slot finishes.
In flow chart 2000, the time slot of the distribution in the two-way time slot that k is device (k in m); M be macLLDNnumBidirectionalTS(, the sum of two-way time slot).In one embodiment, flow chart 2000 is when two-way time slot finishes, and wherein, the dormancy duration is set to 0.In one embodiment, the dormancy duration is set to: sleep_duration+=(m – k) x TS_Duration.Device enters resting state subsequently when two-way time slot finishes, and dormancy within definite dormancy duration.
In one embodiment, when by LL beacon frame 1110(Figure 10) while receiving sleep request, the device of request dormancy enters at once resting state after beacon slot, and dormancy in the duration of indicating in the dormancy duration of dormancy control field son field.In one embodiment, the current superframe duration is designated as the part in the dormancy duration, but the duration of beacon slot need to be subtracted the dormancy duration from residue, to make device successfully obtain the LL beacon frame 1110 of expectation.
In one embodiment, when receiving sleep request by command frame during down link management time slot, the device of request dormancy will enter at once resting state after down link is managed time slot, and dormancy in the duration of indicating in the dormancy duration of dormancy control field son field.In one embodiment, the current superframe duration is designated as the part in the dormancy duration, but the duration of LL beacon slot and down link management time slot need to be subtracted from the residue dormancy duration, to make device successfully obtain the LL beacon frame of expectation.
In one embodiment, when receiving sleep request by command frame during two-way time slot, the device of request dormancy should enter resting state when this superframe finishes, and dormancy in the duration of indicating in the dormancy duration son field of the dormancy control field of LL beacon frame 1110.The current superframe duration is not designated as the part in the dormancy duration.In one embodiment, as an alternative, device also can enter at once resting state after receiving sleep request.In one embodiment, in this case, section remaining time of current superframe is not the part of duration of indicating in dormancy duration field.In one or more embodiment, the wakeup time that installs comparable indication wakes up a little earlier to adjust clock drift.
Figure 20 illustrates the time attribute of time slot 2100.In one embodiment, in LLDN superframe, by four time attribute, each time slot is described.The implication of attribute is as follows:
1) tSlotStart: the time started of time slot;
2) tSlotTxOwner: the end time of privilege access that has the device of time slot;
3) tSlotTxGW: if time slot is not used, LLDN PAN telegon can use this time slot;
4) tSlotEnd: the finish time of time slot.
According to current standard, if time slot is not used yet,, from tSlotTxGW until SlotEnd, LLDN PAN telegon can use this time slot.In one embodiment, under LLDN energy-saving mode, when one or more device is in resting state lower time, PAN telegon should not send to any frame any one of these sleep devices.In one embodiment, under LLDN energy-saving mode, while waking up and finding not have the data that will send before the uplink time slot that device is distributing, allow device to turn back to resting state.After tSlotTxGW, PAN telegon should not send to this device by any frame, even if this device is the owner of time slot.
In one embodiment, if device has the uplink data that will send to telegon in the time slot distributing, this device can enter dormancy once completing data transmission.In one embodiment, in this case, device should add the remaining time of this time slot to Sleep_Duration.
Figure 21 comprises illustrating for realizing the high level block diagram of information processing system of the computer system 100 of disclosed embodiment.Computer system 100 comprises one or more processor 101, and also can comprise that electronic display unit 102(is for display graphics, text and other data), main storage 103(for example, random-access memory (ram)), storage device 104(for example, hard disk drive), dismountable storage device 105(for example, removable memory driver, dismountable memory module, tape drive, CD drive, there is the computer-readable medium that is stored in computer software and/or data wherein), user's interface device 106(for example, keyboard, touch-screen, keypad, indicator device) and communication interface 107(for example, modulator-demodulator, network interface (such as Ethernet card), communication port or PCMCIA groove and card).Communication interface 107 allows software and data to unify and be transmitted between external device (ED) in department of computer science.System 100 for example also comprises communications infrastructure 108(that aforementioned means/module 101 to 107 is connected to, communication bus, cross spider or network).
The information transmitting via communication interface 107 can be form of signal (all if the electricity receiving by communication interface 107 via the communication link that carries signal, electromagnetism, light or other signal), and can use wired or cable, optical fiber, telephone wire, cellular phone link, radio frequency (RF) link and/or other communication channel to realize.Represent that the block diagram here and/or the computer program instructions of flow chart can be loaded on computer, programmable data processing device or processing unit, so that the sequence of operations of carrying out produces computer implemented processing on computer, programmable data processing device or processing unit.
Flow chart and/or the block diagram of reference method, equipment (system) and computer program have been described embodiment.Each square frame or their combination in these chart/diagrams can be realized by computer program instructions.When computer program instructions is provided for processor, computer program instructions produces machine, makes the instruction of carrying out via processor create the device for the function/operation of realization flow figure and/or block diagram appointment.Each square frame in flow chart/block diagram can represent hardware and/or software module or logic.In selectable implementation, the function of pointing out in square frame can, not according to occurring in sequence of pointing out in accompanying drawing, can occur etc. simultaneously.
Term " computer program medium ", " computer usable medium ", " computer-readable medium " and " computer program " are generally used for representing such as main storage, second-level storage, dismountable memory driver, are arranged on hard disk in hard disk drive and the medium of signal.These computer programs are for software being offered to the device of computer system.Computer-readable medium allows computer system from computer-readable medium reading out data, instruction, message or message bag and other computer-readable information.For example, computer-readable medium can comprise nonvolatile memory, such as floppy disk, ROM, flash memory, dish, drives memory, CD-ROM and other permanent memory.For example, be of value to transmission information between computer system, such as data and computer instruction.Computer program instructions can be stored in can order in computer, other programmable data processing device or the computer-readable medium of other device with ad hoc fashion work, make to be stored in instruction in computer-readable medium produce comprise realization flow figure and/block diagram or square frame in the product of manufacture of instruction of function/action of appointment.
In addition, computer-readable medium can comprise the computer-readable information in transient state medium (such as network linking and/or network interface), and transient state medium comprises cable network or the wireless network that allows computer to read these computer-readable information.Computer program (that is, computer control logic) is stored in main storage and/or second-level storage.Also can be via communication interface receiving computer program.When being performed, this computer program makes computer system carry out function as discussed here.Specifically, when being performed, computer program makes the function of processor, polycaryon processor computer system.This computer program represents the controller of computer system.
Although described embodiment with reference to the particular version of embodiment, yet other version is feasible.Therefore, the spirit and scope of claim should not be restricted to the description of the preferred version comprising here.
Claims (28)
1. a method for radio communication, comprising:
During Discovery Status, wireless device is passed on power saving capability information to telegon;
By wireless device, received the beacon of indicating allocation state;
Configuration status information is sent to telegon;
By wireless device, from telegon, receive configuring request, to enter or to exit energy-saving mode.
2. the method for claim 1, also comprises:
When receiving configuration status information from wireless device, telegon determines whether to grant and enters or exit energy-saving mode, and the configuring request command frame that comprises energy-saving mode configuration parameter is sent to wireless device.
3. method as claimed in claim 2, wherein, beacon comprises following indication: for dormancy or wake command, control bitmap for the dormancy of a plurality of wireless devices or the application of wake command, dormancy duration and wireless device dormancy.
4. method as claimed in claim 3, wherein, just under state of activation time, wireless device is changed between state of activation and resting state based on configuring request command frame.
5. method as claimed in claim 4, wherein, when wireless device comprises power saving capability, asks according to telegon, and wireless device is converted to resting state constantly at following one or more in constantly:
If there is not management time slot in beacon frame, when beacon frame finishes;
If there is management time slot in beacon frame, when managing time slot and finishing;
If wireless device need to resend communication, during the resending time slot and finish of the distribution of wireless device;
When the up link sending time slots of the distribution of wireless device finishes;
If being scheduling to, wireless device do not resending immediately following time slot after group acknowledge (ACK) time slot, when organizing ACK time slot and finishing;
During resending time slot and finish after group ACK time slot; Or
If sending direction is set to up link, when the two-way time slot distributing finishes.
6. method as claimed in claim 5, wherein, when wireless device comprises power saving capability, asks according to telegon, and wireless device was converted to state of activation from resting state before one or more time slot of following time slot:
If wireless device need to resend communication, that distributes resends time slot;
The up link sending time slots distributing;
If group ACK is configured, organize ACK time slot;
After group ACK time slot, resend time slot;
If wireless device is configured to down link sending direction, two-way time slot;
If wireless device is configured to up link sending direction and wireless device is assigned to two-way time slot, two-way time slot; Or
Next beacon.
7. method as claimed in claim 6, wherein, wireless device and telegon are parts that comprises the low delay deterministic network (LLDN) of a plurality of wireless devices.
8. method as claimed in claim 7, wherein, LLDN is a part for a territory net (PAN), telegon comprises PAN telegon.
9. method as claimed in claim 8, wherein, PAN telegon uses the indication in beacon that request is sent to one or more wireless device under state of activation, so that described one or more wireless device enters resting state within a predetermined period of time, wherein, PAN telegon does not send to request the wireless device under resting state.
10. method as claimed in claim 9, wherein, PAN telegon asks all wireless devices or part wireless device in LLDN to enter resting state based on determining at device current operation or inactive time period of measuring with next operation or between measuring.
11. 1 kinds of wireless devices, comprising:
Physical layer (PHY), carries out radio communication via radio communication channel;
Medium access control (MAC) layer;
Power-saving module is passed on power saving capability information to telegon during Discovery Status; The beacon of the indicating allocation state based on receiving sends to telegon by configuration status information; From telegon, receive configuring request, to enter or to exit energy-saving mode.
12. wireless devices as claimed in claim 11, wherein, when receiving configuration status information from wireless device, telegon determines whether to grant and enters or exit energy-saving mode, and telegon sends to wireless device by the configuring request command frame that comprises energy-saving mode configuration parameter.
13. wireless devices as claimed in claim 12, wherein, beacon comprises following indication: for dormancy or wake command, control bitmap for the dormancy of a plurality of wireless devices or the application of wake command, dormancy duration and wireless device dormancy, wherein, wireless device is configured to change between state of activation and resting state based on configuring request command frame.
14. wireless devices as claimed in claim 13, wherein, when wireless device comprises power saving capability, ask according to telegon, and wireless device is converted to resting state constantly at following one or more in constantly:
If there is not management time slot in beacon frame, when beacon frame finishes;
If there is management time slot in beacon frame, when managing time slot and finishing;
If wireless device need to resend communication, during the resending time slot and finish of the distribution of wireless device;
When the up link sending time slots of the distribution of wireless device finishes;
If being scheduling to, wireless device do not resending immediately following time slot after group acknowledge (ACK) time slot, when organizing ACK time slot and finishing;
During resending time slot and finish after group ACK time slot; Or
If sending direction is set to up link, when the two-way time slot distributing finishes.
15. wireless devices as claimed in claim 14, wherein, when wireless device comprises power saving capability, ask according to telegon, and wireless device was converted to state of activation from resting state before one or more time slot of following time slot:
If wireless device need to resend communication, that distributes resends time slot;
The up link sending time slots distributing;
If group ACK is configured, organize ACK time slot;
After group ACK time slot, resend time slot;
If wireless device is configured to down link sending direction, two-way time slot;
If wireless device is configured to up link sending direction and wireless device is assigned to two-way time slot, two-way time slot; Or
Next beacon.
16. wireless devices as claimed in claim 15, wherein, wireless device and telegon are parts that comprises the low delay deterministic network (LLDN) of a plurality of wireless devices.
17. wireless devices as claimed in claim 16, wherein, LLDN is a part for a territory net (PAN), telegon comprises PAN telegon.
18. wireless devices as claimed in claim 17, wherein, PAN telegon uses the indication in beacon that request is sent to one or more wireless device under state of activation, so that described one or more wireless device enters resting state within a predetermined period of time, wherein, PAN telegon does not send to request the wireless device under resting state.
19. wireless devices as claimed in claim 18, wherein, all wireless devices or part wireless device in the inactive time period request LLDN of PAN telegon based on determining in device current operation or measurement and next operation or between measuring enter resting state.
20. 1 kinds of wireless telegons, comprising:
Physical layer (PHY), carries out radio communication via radio communication channel;
Medium access control (MAC) layer, management transmission to a plurality of radio stations via wireless channel,
Wherein, telegon receives power saving capability information from wireless device during Discovery Status; The beacon that comprises the request of configuration status information is sent to wireless device; From wireless device, receive configuration status, and configuring request is sent to wireless device, so that wireless device enters or exit energy-saving mode.
21. wireless telegons as claimed in claim 20, wherein, when receiving configuration status information from wireless device, telegon determines whether to grant and enters or exit energy-saving mode, and telegon sends to wireless device by the configuring request command frame that comprises energy-saving mode configuration parameter.
22. wireless telegons as claimed in claim 21, wherein, beacon comprises following indication: for dormancy or wake command, control bitmap for the dormancy of a plurality of wireless devices or the application of wake command, dormancy duration and wireless device dormancy, wherein, wireless device is configured to change between state of activation and resting state based on configuring request command frame.
23. wireless telegons as claimed in claim 22, wherein, when wireless device comprises power saving capability, wireless device that telegon is asked is converted to resting state constantly at following one or more in constantly:
If there is not management time slot in beacon frame, when beacon frame finishes;
If there is management time slot in beacon frame, when managing time slot and finishing;
If wireless device need to resend communication, during the resending time slot and finish of the distribution of wireless device;
When the up link sending time slots of the distribution of wireless device finishes;
If being scheduling to, wireless device do not resending immediately following time slot after group acknowledge (ACK) time slot, when organizing ACK time slot and finishing;
During resending time slot and finish after group ACK time slot; Or
If sending direction is set to up link, when the two-way time slot distributing finishes.
24. wireless telegons as claimed in claim 23, wherein, when wireless device comprises power saving capability, wireless device keeps resting state, until telegon request wireless device was converted to state of activation from resting state before one or more time slot of following time slot:
If wireless device need to resend communication, that distributes resends time slot;
The up link sending time slots distributing;
If group ACK is configured, organize ACK time slot;
After group ACK time slot, resend time slot;
As wireless device is configured to down link sending direction, two-way time slot;
If wireless device is configured to up link sending direction and wireless device is assigned to two-way time slot, two-way time slot; Or
Next beacon.
25. wireless telegons as claimed in claim 24, wherein, telegon and wireless device are parts that comprises the low delay deterministic network (LLDN) of a plurality of wireless devices.
26. wireless telegons as claimed in claim 25, wherein, LLDN is a part for a territory net (PAN), telegon comprises PAN telegon.
27. wireless telegons as claimed in claim 26, wherein, PAN telegon uses the indication in beacon that request command frame is sent to one or more wireless device under state of activation, so that described one or more wireless device enters resting state within a predetermined period of time, wherein, PAN telegon does not send to request the wireless device under resting state.
28. wireless telegons as claimed in claim 27, wherein, all wireless devices or the part wireless device in the inactive time period request LLDN of PAN telegon based on determining in device current operation or measurement and next operation or between measuring enters resting state.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361788517P | 2013-03-15 | 2013-03-15 | |
| US61/788,517 | 2013-03-15 | ||
| US14/078,323 US9439142B2 (en) | 2013-03-15 | 2013-11-12 | Power saving for low latency deterministic networks in wireless personal area networks |
| US14/078,323 | 2013-11-12 | ||
| KR10-2014-0018433 | 2014-02-18 | ||
| KR1020140018433A KR102134445B1 (en) | 2013-03-15 | 2014-02-18 | Power saving for low latency deterministic networks in wireless personal area networks |
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| CN110268647A (en) * | 2016-09-30 | 2019-09-20 | 英莆莱科技有限公司 | Method and system for the low latency wireless communication with expansible layer architecture |
| CN110876334A (en) * | 2019-12-23 | 2020-03-13 | 湖北省农业科学院中药材研究所 | Sprinkling irrigation frame capable of preventing diseases and pests from spreading, control system and control method |
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