CN107172692A - Low time delay ensures slot allocation method - Google Patents
Low time delay ensures slot allocation method Download PDFInfo
- Publication number
- CN107172692A CN107172692A CN201710231407.9A CN201710231407A CN107172692A CN 107172692 A CN107172692 A CN 107172692A CN 201710231407 A CN201710231407 A CN 201710231407A CN 107172692 A CN107172692 A CN 107172692A
- Authority
- CN
- China
- Prior art keywords
- period
- gts
- superframe
- time slot
- contention access
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 8
- 101100172132 Mus musculus Eif3a gene Proteins 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 6
- 230000000284 resting effect Effects 0.000 abstract description 6
- 230000007423 decrease Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005059 dormancy Effects 0.000 description 3
- 230000002860 competitive effect Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000013468 resource allocation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/02—Hybrid access
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
Slot allocation method is ensured the invention discloses a kind of low time delay.Its scheme is：1. the order that superframe structure is adjusted to arrange with non-competing period, inactive period and contention access period；The superframe start time broadcast beacon frame of 2.PAN telegons after the adjustment；3. beacon frame information terminates rear each node into the non-competing period, apply for that the ordinary node for ensureing time slot transmits GTS business within the period；4. the non-competing period, which terminates rear each node, enters all nodes holding resting states in inactive period, the period；5. the inactive period terminates rear each node into the contention access period, there is GTS business ordinary node to be sent to send GTS requests to PAN telegons within the period, application ensures time slot；Terminate 6. the contention access period terminates rear current super frame, each node enters next superframe.Present invention decreases the propagation delay time of GTS business, the accuracy for ensureing time slot distribution is improved, available for Wireless Personal Network.
Description
Technical field
The invention belongs to communication technical field, more particularly to a kind of distribution method for ensureing time slot GTS, available for pair
The improvement of IEEE802.15.4 communication standards.
Background technology
IEEE 802.15.4 communication standards are designed for low-data-rate wireless personal area network WPAN, and it is inexpensive, low work(
Consume and be easily installed as main perpetual object, it is intended to for there is provided one between distinct device in personal or indoor environment
The low-speed wireless network standard of flexibility and reliability.
Wireless device in network is divided into two classes by IEEE 802.15.4 by function：PAN telegons and ordinary node.
Wherein PAN telegons are as the center control nodes of whole network, and each IEEE 802.15.4 networks can only have a PAN
Telegon.Some ordinary nodes can associate other nodes as general telegon.
IEEE 802.15.4 support the topological structure of star-like and two kinds of fundamental types of peer-type, and every kind of topological structure is propped up
Hold two kinds of mode of operations：Beacon enables pattern and non-beacon enables pattern.Under non-beacon enable pattern, all sections in network
Point is that non-beacon enables pattern can be flexible by non-slot carrier sense multiple access/conflict avoidance algorithm competitive channel
Building network, but Real-time ensuring technology and good service quality assurance can not be provided.
Under beacon enable pattern, channel is divided into the time of continuous and non-overlapping copies by PAN telegons on a timeline
Section, each period is referred to as a superframe, as shown in Figure 4.Superframe is made up of active period and inactive period, wherein when enlivening
Section includes beacon and sends period, contention access period CAP and non-competing period CFP；The inactive period, all nodes entered dormancy
State, data are not sent to reduce energy consumption.
PAN telegons are in each superframe initial time to the ordinary node broadcast beacon frame being associated, and issue is current super
Channel assignment scheme in the start/stop time of frame and the superframe.PAN telegons by periodically send beacon frame realize with
The synchronization of surroundings nodes, thus communication real-time and service quality can preferably be ensured.
IEEE 802.15.4 standards, which are provided, ensures time slot GTS mechanism, to meet to delay sensitive or bandwidth is required
Business demand.GTS mechanism is a kind of access scheme of Lothrus apterus, the guarantee that ordinary node can be to the application of PAN telegons necessarily
Time slot, as the dedicated transmissions time slot of oneself, the guarantee time slot was located in the non-competing period.Ensureing time slot interior nodes without logical
Cross competitive way access channel to obtain business transmission opportunity, and directly can carry out service interaction with PAN telegons.
When ordinary node needs to ensure time slot, GTS can be sent to PAN telegons within the contention access period and asked, PAN
Telegon then decides whether to ensure time slot to the node distribution that have sent GTS requests according to current resource allocation conditions.For
Allocated guarantee time slot, ordinary node can ask revocation, and PAN telegons can also be cancelled actively.GTS has following several to make
With rule：
(1) GTS can only be distributed by PAN telegons, be led between the ordinary node for PAN telegons and associated by it
Letter；
(2) PAN telegons at most ensure time slot to 7 ordinary node distribution in each superframe；
(3) ensure that time slot is only used for the transmission of data frame.
When IEEE 802.15.4 are applied to Wireless Personal Network, although when the non-competing period in superframe structure can guarantee that
Prolong the low delay character of sensitive traffic, and the dormancy strategy of inactive period is also beneficial to reduce the energy consumption of nodes,
But it is not enough that the standard still has following both sides：
1) there is intrinsic time delay in GTS business
As shown in figure 4, ordinary node sends GTS requests, it is necessary to when current in the contention access period of nth superframe
Superframe terminates, the beacon frame moment of (n+1)th superframe can just obtain the allocation result of GTS time slots, and will be when (n+1)th superframe
The non-competing period in could transmit GTS business, so that GTS business presence necessarily intrinsic time delay, have impact on time delay quick
The service quality of sense business；
2) accuracy of GTS distribution can not be ensured
Because PAN telegons can not timely respond to the GTS requests of node, by the state of affairs for waiting as long for posterior nodal point
Change may be had occurred and that, now original allocative decision can not reflect the practical business demand of node, have impact on GTS distribution
Accuracy.
The content of the invention
Present invention aims at the deficiency for above-mentioned prior art, propose that a kind of low time delay ensures slot allocation method,
To shorten the intrinsic wait time delay of GTS business, improve the accuracy for ensureing time slot distribution, preferably meet have low time delay demand or
The business of fixed-bandwidth demand.
The present invention to superframe structure by being adjusted so that ordinary node can in time be obtained after GTS requests are sent
The allocation result of time slot is ensured, and starts the transmission of GTS business immediately, its implementation is as follows：
Technical scheme 1：
Low time delay ensures slot allocation method in a kind of Wireless Personal Network, it is characterised in that：Carry out in the following order：
(1) superframe structure is adjusted, will in former agreement with contention access period, non-competing period and inactive when
The order of section arrangement is adjusted to the order arranged with non-competing period, inactive period and contention access period；
(2) the initial time broadcast beacon frame of the nth superframe of PAN telegons after the adjustment, each ordinary node receives letter
Frame is marked, and by protocol parameter record in local cache；
(3) beacon, which is sent, terminates rear each node into the non-competing period, and PAN telegons judge whether each ordinary node has
GTS business is to be sent：If ordinary node has GTS business to need transmission, and has successfully obtained before current super frame guarantee time slot,
Then service interaction is carried out within the non-competing period with PAN telegons；If ordinary node is sent without GTS business, in current super frame
Not comprising the non-competing period；
(4) the non-competing period terminates rear each node into the inactive period, and all nodes are in dormancy in the inactive period
State；
(5) after the inactive period terminates, all nodes enter the contention access period, if needing to protect in this stage ordinary node
Hinder time slot to send the business of delay requirement, then channel is accessed by time slot CSMA/CA mechanism, and send to PAN telegons
GTS is asked, and application ensures time slot；
(6) PAN telegons are distributed the GTS requests received according to the resource situation in superframe, and distribution is tied
Fruit is broadcast to each ordinary node in the beacon frame of (n+1)th superframe；
(7) the contention access period terminates rear nth superframe and terminated, and PAN telegons and each ordinary node enter (n+1)th and surpassed
Frame, and it is transferred to step (1).
Technical scheme 2：
Low time delay ensures slot allocation method in a kind of Wireless Personal Network, it is characterised in that：Carry out in the following order：
1) superframe structure is adjusted, will in former agreement with contention access period, non-competing period and inactive when
The order of section arrangement is adjusted to the order arranged with non-competing period, contention access period and inactive period；
2) the initial time broadcast beacon frame of the nth superframe of PAN telegons after the adjustment, each ordinary node receives beacon
Frame, and by protocol parameter record in local cache；
3) beacon, which is sent, terminates rear each node into the non-competing period, and PAN telegons judge whether each ordinary node has GTS
Business is to be sent：If ordinary node has GTS business to need transmission, and has successfully obtained guarantee time slot before current super frame, then
Within the non-competing period service interaction is carried out with PAN telegons；If ordinary node is sent without GTS business, in current super frame not
Include the non-competing period；
4) after the non-competing period terminates, all nodes enter the contention access period, if needing to protect in this stage ordinary node
Hinder time slot to send the business of delay requirement, then channel is accessed by time slot CSMA/CA mechanism in the contention access period, and
GTS requests are sent to PAN telegons, application ensures time slot；
5) PAN telegons are distributed the GTS requests received according to the resource situation in superframe, and by allocation result
Each ordinary node is broadcast in the beacon frame of (n+1)th superframe；
6) the contention access period terminates rear each node into the inactive period, and this period all nodes are in a dormant state；
7) after the inactive period terminates, nth superframe terminates.PAN telegons and each ordinary node enter (n+1)th and surpassed
Frame, and it is transferred to step 1).
The invention has the advantages that：
First, reduce the time delay of GTS business.
In former agreement, ordinary node sends GTS requests, it is necessary to when next super within the contention access period of current super frame
It could start to transmit GTS business in the non-competing period of frame, this make it that the intrinsic time delay of GTS business is larger.What the present invention was used
Superframe structure after adjustment, can substantially reduce the time delay of GTS business；
Second, improve the accuracy for ensureing time slot distribution.
In former agreement, GTS requests are sent has certain intrinsic time delay between the transmission of GTS business, and IEEE
802.15.4 agreement is provided, for the GTS business for preparing to transmit in time slot is ensured, if the guarantee time slot of application is not reached also,
Ordinary node can still transmit the business in the contention access period.Because node may hop GTS within the stand-by period
Business, or new GTS business is generated again so that when ensureing that time slot is reached, the service buffer situation of node changes,
Apllied guarantee slot length and the portfolio to be sent this moment and mismatch before causing.
And the superframe structure after the adjustment that the present invention is used can then cause ordinary node to start immediately after sending GTS requests
The transmission of GTS business, therefore improve the accuracy of GTS time slots distribution and ensure the utilization rate of time interval resource.
Brief description of the drawings
Fig. 1 is the usage scenario figure of the embodiment of the present invention；
Fig. 2 is the implementation process figure of technical solution of the present invention 1；
Fig. 3 is the implementation process figure of technical solution of the present invention 2；
Fig. 4 is the superframe structure schematic diagram in IEEE 802.15.4 agreements；
Fig. 5 is the superframe structure schematic diagram after technical solution of the present invention 1 is adjusted；
Fig. 6 is the superframe structure schematic diagram after technical solution of the present invention 2 is adjusted；
Fig. 7 is the beacon frame superframe configuration field structural representation that the present invention is used.
Embodiment
Present disclosure is further elaborated below in conjunction with the accompanying drawings.
Reference picture 1, the topological structure that this example is used is star topology, and all ordinary nodes only have with PAN telegons
No data is transmitted between service interaction, ordinary node；Network enables pattern using beacon.
Embodiment one：
Reference picture 2, the specific implementation step of this example is described as follows：
Step one, superframe structure is adjusted.
Superframe structure is adjusted, will be in former agreement with contention access period, non-competing period and inactive period
The order of arrangement is adjusted to the order arranged with non-competing period, inactive period and contention access period.Former superframe structure is such as
Shown in Fig. 4, the superframe structure after adjustment is as shown in Figure 5；
Superframe structure after adjustment causes ordinary node to be sent within the contention access period of a upper superframe after GTS requests,
It can be obtained immediately by the beacon frame of current super frame and ensure time slot allocation result, and immediately within the non-competing period of current super frame
Start the transmission of GTS business.
Step 2, sends beacon frame.
T0 constructions and broadcast beacon frame are carved at the beginning of the nth superframe of PAN telegons after the adjustment, each ordinary node connects
Beacon frame is received, protocol parameter therein is read and records in local cache.
The beacon frame, is that former agreement beacon frame is improved, i.e., when by the contention access in superframe configuration field
Section terminates time slot and is changed to the contention access period to start time slot, as shown in Figure 7.
Step 3, ordinary node transmits GTS business in the non-competing period.
After beacon frame information terminates, each node enters non-competing period, i.e. t1 to the t2 periods；
Apply for that the node for ensureing time slot can transmit GTS business uncontestedly within the period, PAN telegons are first determined whether
Whether each ordinary node has GTS business to be sent：
, can be if ordinary node has GTS business to need to send and successfully obtained guarantee time slot before current super frame
Transmission GTS business in the guarantee time slot that beacon frame is specified；
If ordinary node does not have GTS business or has GTS business but do not obtain guarantee time slot distribution, the ordinary node enters
Enter resting state；
If in (n-1)th superframe without any ordinary node send GTS request, or the guarantee time slot distributed before all by
Revocation, then do not include the non-competing period in current super frame.
Step 4, the inactive period, each node entered resting state.
The non-competing period terminates rear each node into inactive period, i.e. t2 to the t3 periods, during this period at all nodes
In resting state, it is a kind of Low Power Strategy to introduce the inactive period, is transmitted by the adjustable in length for adjusting the inactive period
Dutycycle.
It should be noted that：If not including non-competing period, beacon frame information all nodes after terminating in current super frame
It is directly entered the inactive period.
Step 5, ordinary node sends GTS requests in the contention access period.
After the inactive period terminates, all nodes enter contention access period, i.e. t3 to the t4 periods, if general in this stage
Logical node has GTS business to need transmission, then accesses channel by time slot CSMA/CA mechanism, and send GTS to PAN telegons and ask
Ask, application ensures time slot；
PAN telegons are received after the GTS requests that ordinary node is sent, and replying ACK to the ordinary node adds their confirmation.
Step 6, GTS time slot allocation procedures.
PAN telegons are distributed the GTS requests received according to the resource situation in superframe：
First, check that current be allocated ensures whether the interstitial content of time slot reaches 7：If interstitial content has reached 7,
Then PAN telegons refuse GTS requests；If not up to, continuing to judge downwards；
Then, whether check in superframe active period has enough spaces to distribute this GTS requests：IEEE 802.15.4
Agreement provides that the minimum length of contention access period is 440symbols, so PAN telegons need to be judged as GTS requests point
Match somebody with somebody after guarantee time slot, if the length of contention access period can be reduced to below 440symbols：If meeting, PAN coordinates
Device refuses GTS requests；If will not, GTS requests meet distributive condition；
Asked finally, for the GTS for meeting above distributive condition, the allocation result of the request is put into n-th by PAN telegons
In the beacon frame of+1 superframe, each ordinary node is given with to be broadcast.
Step 7, after the t4 moment contention access periods terminate, then current super frame terminates, PAN telegons and each ordinary node
Into (n+1)th superframe, and return to step one.
Embodiment two：
Reference picture 3, the specific implementation step of this example is described as follows：
Step one, superframe structure is adjusted.
Superframe structure is adjusted, will be in former agreement with contention access period, non-competing period and inactive period
The order of arrangement is adjusted to the order arranged with non-competing period, contention access period and inactive period.Former superframe structure is such as
Shown in Fig. 4, the superframe structure after adjustment is for example as shown in Figure 6；
Ordinary node sends GTS requests within the contention access period of a upper superframe, and after the inactive period terminates,
It can be obtained by the beacon frame of current super frame and ensure time slot allocation result, and opened immediately within the non-competing period of current super frame
Beginning GTS business is transmitted.
Step 2, sends beacon frame.
T0 constructions and broadcast beacon frame are carved at the beginning of the nth superframe of PAN telegons after the adjustment, each ordinary node connects
Beacon frame is received, protocol parameter therein is read and records in local cache.
The beacon frame, is that former agreement beacon frame is improved, i.e., when by the contention access in superframe configuration field
Section terminates time slot and is changed to the contention access period to start time slot, as shown in Figure 7.
Step 3, ordinary node transmits GTS business in the non-competing period.
After beacon frame information terminates, each node enters non-competing period, i.e. t1 to the t2 periods；
Apply for that the node for ensureing time slot can transmit GTS business uncontestedly within the period, PAN telegons are first determined whether
Whether each ordinary node has GTS business to be sent：
, can be if ordinary node has GTS business to need to send and successfully obtained guarantee time slot before current super frame
Transmission GTS business in the guarantee time slot that beacon frame is specified；
If ordinary node does not have GTS business or has GTS business but do not obtain guarantee time slot distribution, the ordinary node enters
Enter resting state；
If in (n-1)th superframe without any ordinary node send GTS request, or the guarantee time slot distributed before all by
Revocation, then do not include the non-competing period in current super frame.
Step 4, ordinary node sends GTS requests in the contention access period.
The non-competing period terminates rear each node into contention access period, i.e. t2 to the t3 periods, if common in this stage
Node has GTS business to need transmission, then accesses channel by time slot CSMA/CA mechanism, and sends GTS requests to PAN telegons,
Application ensures time slot；
PAN telegons are received after the GTS requests that ordinary node is sent, and replying ACK to the ordinary node adds their confirmation.
It should be noted that：If not including non-competing period, beacon frame information all nodes after terminating in current super frame
It is directly entered the contention access period.
Step 5, GTS time slot allocation procedures.
PAN telegons are distributed the GTS requests received according to the resource situation in superframe：
First, check that current be allocated ensures whether the interstitial content of time slot reaches 7：If interstitial content has reached 7,
Then PAN telegons refuse GTS requests；If not up to, continuing to judge downwards；
Then, whether check in superframe active period has enough spaces to distribute this GTS requests：IEEE 802.15.4
Agreement provides that the minimum length of contention access period is 440symbols, so PAN telegons need to be judged as GTS requests point
Match somebody with somebody after guarantee time slot, if the length of contention access period can be reduced to below 440symbols：If meeting, PAN coordinates
Device refuses GTS requests；If will not, GTS requests meet distributive condition；
Asked finally, for the GTS for meeting above distributive condition, the allocation result of the request is put into n-th by PAN telegons
In the beacon frame of+1 superframe, each ordinary node is given with to be broadcast.
Step 6, the inactive period, each node entered resting state.
After the contention access period terminates, each node enters inactive period, i.e. t3 to t4 periods, this period all nodes
In a dormant state, it is a kind of Low Power Strategy to introduce the inactive period, is passed by the adjustable in length for adjusting the inactive period
Defeated dutycycle.
Step 7, the t4 moment inactive periods terminate, and current super frame terminates, under PAN telegons and the entrance of each ordinary node
One superframe, and return to step one.
Above description is only two instantiations of the present invention, does not constitute any limitation of the invention, it is clear that for this
, all may be without departing substantially from the principle of the invention, structure after present invention and principle has been understood for the professional in field
In the case of, the various modifications and variations in form and details are carried out, but these modifications and variations based on inventive concept are still
Within the claims of the present invention.
Claims (4)
1. low time delay ensures slot allocation method in a kind of Wireless Personal Network, it is characterised in that：Carry out in the following order：
(1) superframe structure is adjusted, will be arranged in former agreement with contention access period, non-competing period and inactive period
The order of row is adjusted to the order arranged with non-competing period, inactive period and contention access period；
(2) the initial time broadcast beacon frame of the nth superframe of PAN telegons after the adjustment, each ordinary node received beacon frame,
And by protocol parameter record in local cache；
(3) beacon, which is sent, terminates rear each node into the non-competing period, and PAN telegons judge whether each ordinary node has GTS industry
Business is to be sent：If ordinary node has GTS business to need transmission, and has successfully obtained guarantee time slot before current super frame, then exist
In the non-competing period service interaction is carried out with PAN telegons；If ordinary node is sent without GTS business, do not wrapped in current super frame
Containing the non-competing period；
(4) the non-competing period terminates rear each node into the inactive period, and all nodes are in a dormant state in the inactive period；
(5) after the inactive period terminates, all nodes enter the contention access period, if when this stage ordinary node needs to ensure
Gap sends the business of delay requirement, then accesses channel by time slot CSMA/CA mechanism, and send GTS to PAN telegons please
Ask, application ensures time slot；
(6) PAN telegons are distributed the GTS requests received according to the resource situation in superframe, and allocation result is existed
Each ordinary node is broadcast in the beacon frame of (n+1)th superframe；
(7) the contention access period terminates rear nth superframe and terminated, and PAN telegons and each ordinary node enter (n+1)th superframe,
And it is transferred to step (1).
2. according to the method described in claim 1, the beacon frame wherein described in step (2), is that former agreement beacon frame is carried out
Improve, i.e., are terminated into time slot the contention access period in superframe configuration field and be changed to the contention access period to start time slot.
3. low time delay ensures slot allocation method in a kind of Wireless Personal Network, it is characterised in that：Carry out in the following order：
1) superframe structure is adjusted, will be arranged in former agreement with contention access period, non-competing period and inactive period
The order of row is adjusted to the order arranged with non-competing period, contention access period and inactive period；
2) the initial time broadcast beacon frame of the nth superframe of PAN telegons after the adjustment, each ordinary node received beacon frame,
And by protocol parameter record in local cache；
3) beacon, which is sent, terminates rear each node into the non-competing period, and PAN telegons judge whether each ordinary node has GTS business
It is to be sent：If ordinary node has GTS business to need transmission, and has successfully obtained guarantee time slot before current super frame, then non-
Compete in the period and PAN telegons carry out service interaction；If ordinary node is sent without GTS business, do not include in current super frame
The non-competing period；
4) after the non-competing period terminates, all nodes enter the contention access period, if when this stage ordinary node needs to ensure
Gap sends the business of delay requirement, then accesses channel by time slot CSMA/CA mechanism in the contention access period, and to
PAN telegons send GTS requests, and application ensures time slot；
5) PAN telegons are distributed the GTS requests received according to the resource situation in superframe, and by allocation result the
Each ordinary node is broadcast in the beacon frame of n+1 superframe；
6) the contention access period terminates rear each node into the inactive period, and this period all nodes are in a dormant state；
7) after the inactive period terminates, nth superframe terminates.PAN telegons and each ordinary node enter (n+1)th superframe, and
It is transferred to step 1).
4. method according to claim 3, wherein step 2) described in beacon frame, be that former agreement beacon frame is changed
Enter, i.e., are terminated into time slot the contention access period in superframe configuration field and be changed to the contention access period to start time slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710231407.9A CN107172692A (en) | 2017-04-11 | 2017-04-11 | Low time delay ensures slot allocation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710231407.9A CN107172692A (en) | 2017-04-11 | 2017-04-11 | Low time delay ensures slot allocation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107172692A true CN107172692A (en) | 2017-09-15 |
Family
ID=59849638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710231407.9A Pending CN107172692A (en) | 2017-04-11 | 2017-04-11 | Low time delay ensures slot allocation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107172692A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831831A (en) * | 2019-03-07 | 2019-05-31 | 西安电子科技大学 | Node acceptance method based on competition sequence |
| CN110662293A (en) * | 2018-06-28 | 2020-01-07 | 普天信息技术有限公司 | Uplink service scheduling method and system based on discrete sub-band |
| CN111416682A (en) * | 2019-01-07 | 2020-07-14 | 华为技术有限公司 | Data transmission method and communication equipment |
| CN113824571A (en) * | 2021-11-24 | 2021-12-21 | 华南理工大学 | Agricultural thing networking that is fit for wisdom agricultural |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101978760A (en) * | 2008-03-18 | 2011-02-16 | 三菱电机株式会社 | Hybrid multiple access method and system in wireless networks with extended content free access period |
| CN102026099A (en) * | 2010-11-16 | 2011-04-20 | 西安电子科技大学 | Self-adaptive low-delay media access control method in WBAN (wireless body area network) |
| CN103237353A (en) * | 2013-05-20 | 2013-08-07 | 重庆邮电大学 | Method for acquiring and allocating GTS (guaranteed time slot) of assured service as well as wireless sensor network |
-
2017
- 2017-04-11 CN CN201710231407.9A patent/CN107172692A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101978760A (en) * | 2008-03-18 | 2011-02-16 | 三菱电机株式会社 | Hybrid multiple access method and system in wireless networks with extended content free access period |
| CN102026099A (en) * | 2010-11-16 | 2011-04-20 | 西安电子科技大学 | Self-adaptive low-delay media access control method in WBAN (wireless body area network) |
| CN103237353A (en) * | 2013-05-20 | 2013-08-07 | 重庆邮电大学 | Method for acquiring and allocating GTS (guaranteed time slot) of assured service as well as wireless sensor network |
Non-Patent Citations (2)
| Title |
|---|
| NAVEED SALMAN等: "Overview of the IEEE 802.15.4 standards family for Low Rate Wireless Personal Area Networks", 《IEEE》 * |
| 姜智文等: "IEEE802.15.4MAC协议研究现状", 《无线电通信技术》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110662293A (en) * | 2018-06-28 | 2020-01-07 | 普天信息技术有限公司 | Uplink service scheduling method and system based on discrete sub-band |
| CN111416682A (en) * | 2019-01-07 | 2020-07-14 | 华为技术有限公司 | Data transmission method and communication equipment |
| CN111416682B (en) * | 2019-01-07 | 2021-10-26 | 华为技术有限公司 | Data transmission method and communication equipment |
| EP3893413A4 (en) * | 2019-01-07 | 2022-01-12 | Huawei Technologies Co., Ltd. | Data transmission method and communication device |
| CN109831831A (en) * | 2019-03-07 | 2019-05-31 | 西安电子科技大学 | Node acceptance method based on competition sequence |
| CN109831831B (en) * | 2019-03-07 | 2022-03-04 | 西安电子科技大学 | Node admission method based on competition sequencing |
| CN113824571A (en) * | 2021-11-24 | 2021-12-21 | 华南理工大学 | Agricultural thing networking that is fit for wisdom agricultural |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106658735B (en) | Long propagation time delay wireless link time slot allocation method based on TDMA | |
| CN101193054B (en) | A method and system for data transmission and node devices and coordination device | |
| Chatterjea et al. | AI-LMAC: an adaptive, information-centric and lightweight MAC protocol for wireless sensor networks | |
| CN101321127B (en) | Determined communication scheduling method of industrial wireless network | |
| CN107949062B (en) | Dynamic allocation method for time slot resources of broadband ad hoc network based on multi-level frame structure | |
| US10324871B2 (en) | Method and system for buffer state based low power operation in a MoCA network | |
| US8964619B2 (en) | Network assisted power management | |
| CN107172692A (en) | Low time delay ensures slot allocation method | |
| RU2005106258A (en) | METHOD AND DEVICE FOR WORKING WITH MOBILE NODES IN MULTIPLE CONDITIONS | |
| Li et al. | A novel medium access control protocol with low delay and traffic adaptivity for wireless body area networks | |
| CN103906207A (en) | Wireless sensor network data transmission method based on self-adaptation required awakening technology | |
| US20060251119A1 (en) | Methods and apparatus to setup end-to-end flows in wireless mesh networks | |
| JP2010161772A (en) | Method for scheduling wake/sleep cycles by central device in wireless network | |
| CN101489304A (en) | Media access control method based on differentiate service of wireless multimedia sensor network | |
| CN101500299A (en) | User equipment and uplink sending method under discontinuous receiving state | |
| CN102946631A (en) | Medium access control (MAC) layer node scheduling method based on beacon frame synchronization and communication asynchronization | |
| JP2010062846A (en) | Wireless communication control method, wireless communication base station, wireless communication terminal, and wireless communication system | |
| JP2010057072A (en) | Communication timing control device and method | |
| US9436271B2 (en) | System and method for providing power-save operation in an in-home communication network | |
| JP2018535565A5 (en) | ||
| JP2006303888A (en) | Wireless communication system, wireless network system, communication method, and program | |
| CN105208671B (en) | The implementation method of high channel utilization rate H-MAC agreements for wireless sensor network | |
| CN113315668B (en) | Method, node device and storage medium for adaptively adjusting network configuration | |
| CN106658731A (en) | Resource scheduling method of wireless MESH network | |
| CN102624620A (en) | Token-frame-based transmission method and system for Ethernet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170915 |
|
| WD01 | Invention patent application deemed withdrawn after publication |