CN101783758A - Family coaxial network MAC layer data transmission method based on service differentiation - Google Patents
Family coaxial network MAC layer data transmission method based on service differentiation Download PDFInfo
- Publication number
- CN101783758A CN101783758A CN201010112243A CN201010112243A CN101783758A CN 101783758 A CN101783758 A CN 101783758A CN 201010112243 A CN201010112243 A CN 201010112243A CN 201010112243 A CN201010112243 A CN 201010112243A CN 101783758 A CN101783758 A CN 101783758A
- Authority
- CN
- China
- Prior art keywords
- priority
- service
- data
- transmission
- network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to a family coaxial network MAC layer data transmission method based on service differentiation, comprising the following steps: 1) setting a priority level for each service; 2) setting the number of transmission time slots corresponding to single transmission period for each priority level; 3) ensuring that higher priority level corresponds to more time slots, and lower priority level corresponds to fewer time slots, and distributing corresponding number of transmission time slots for each service with different priority levels according to the priority level of the service in a dispatching period; and 4) transmitting the data of each service in the transmission period. The invention organically combines requirement on QoS by the service with MAC media access control, directly ensures bandwidth resource needed by the service with high QoS requirement from the bottom layer of the network through a pertinence application service characteristic analysis extract technology, a data transmission mode switching technology, a shared channel distributorship agreement and a dynamic self-adaption adjusting technology, and can keep that bandwidth can obtain reasonable distribution and high-efficiency utilization in the service with various QoS requirements.
Description
Technical field
The present invention relates to the broadband network technology field, specifically, mac-layer protocol and data transmission method in the domestic network system that the present invention relates to multiple audio-video frequency media business is provided and have multiple home equipment and terminal.
Background technology
Along with popularizing and the digital development of home equipment of broadband network, people no longer are simple speech and unidirectional video to the demand of communication service, but quicker, abundanter, interactively broadband multimedia services.Thereupon, the demand that makes up the home network that broadband access, interconnected, content share is highlighted day by day.IPTV, the DVR audio-video frequency medias such as (Digital Video Record) that particularly has the high definition quality is used universal day by day, home network technologies has been proposed higher requirement, as: high bandwidth, low delay, low bit error, favorable service quality (QoS) etc.And in considerable time, be main business in the home network with medium such as audio frequency and video especially HD video.
At present, home network begins to take shape and grows stronger day by day in world many countries, and also becomes development trend at home.Domestic households has extensively been laid cable tv coax, and its wiring is fit to the audio-video frequency media business around layings such as TV, audio ﹠ video equipments.Therefore, be the home network of trunk based on wired coaxial dielectric, have advantages such as convenient, the easy expansion of networking.Because wired coaxial network belongs to shared mediator network, under the certain situation of the transmission rate of physical channel, mac-layer protocol is the key factor that influences the effective transmission speed of network and the QoS service guarantees are provided.In sharing mediator network, simultaneously an equipment sending data can only be arranged.Therefore, need MAC layer controlling mechanism reasonable in design, well solve and distribute the use of a plurality of users, could realize data efficient, transmit and the QoS assurance reliably for shared channel resources.And traditional MAC Mechanism Study, be based on the specificity analysis of physical channel more and be target to avoid the transfer of data conflict, and do not interrelate with institute loaded service characteristic, fail to take into full account the Data Transmission Feature difference of different business, thereby, be difficult to guarantee that the efficient fusion of variety classes business carries out.
Coaxial cable fixedly frequency is carried out multi-service the time, adopt time-multiplexed mode more.Basic channel acquisition strategy has contention protocols (as CSMA, carrier sense multiple acces) and collision-free protocol (as reservation protocol).What home network MAC agreement commonly used adopted is contention protocols, be characterized in that in underload (be in synchronization or the time slot, have only small number of devices or service needed to send data) following time delay lacks, but at heavy load (is in synchronization or the time slot, have more equipment or business all will send data) under, it is big that the expense of channel arbitration becomes, and makes channel utilization descend.For example, traditional Ethernet adopts the medium access mode of Carrier Sense Multiple Access (CSMA), its collision and exponential back mechanism have caused nondeterministic network time-delay and delay jitter, and this makes traditional home network service quality when the professional new networks of real-time media such as carrying audio frequency and video, voice are used descend.When adopting contention protocols, under the situation that portion's multi-path high-definition audio frequency and video are carried out simultaneously, the probability of collision increases within the family, and the channel arbitration expense is excessive, will make the rapid variation of network performance, and service quality and user experience descend thereupon.And on the other hand, collision-free protocol has the characteristics that time delay is long with respect to the former, heavy load lower channel utilance improves under the network data underload.But collision-free protocol need have been allocated the use time slot of each equipment in advance, and along with equipment increases, time slot allocation increases, and the time that wheel changes one-period just increases, and time delay strengthens, and therefore is unfavorable for strengthening the extensibility of home network.Therefore, two kinds of agreements respectively have quality under different network environments, can't satisfy in the home network multiple high-quality business simultaneously and carry out simultaneously, and the demand of good extensibility is provided.
Also have some hybrid MAC protocols at present, combine two kinds of protocols properties, improve the partial properties of network.For example: based on the reservation visit of request mode and the hybrid protocol of contention access, with the bandwidth problem that solves the bigger business burst of data volume.The MAC agreement that CSMA/CD mixes with Token Control switches to the Token Control mode under high load condition, switch to the CSMA/CD mode during low load, by selected agreement switching threshold and to the detection of offered load, the response time of reducing network.These hybrid MAC protocols fully do not combine with the characteristic of business, provide same service to different business, under network bandwidth condition of limited, the QoS of miscellaneous service is whole to descend, and the user experience of wherein high to qos requirement business (as real time business such as high resolution audio and videos) is subjected to bigger influence thereupon.Home Plug over Coax has adopted HPA (Home Plug PowerlineAlliance, power line network alliance of family) the household network standards HomePlugAV of Zhi Dinging, the MAC layer of this standard support simultaneously uncompetitive TDMA with based on the competition two kinds of access mode: TDMA of CSMA/CA towards being connected, provide strict QoS to ensure, guarantee RSVP, high reliability and strict delay variation control; CSMA/CA is connectionless, guarantees for business provides the QoS based on service priority.But when HomePlug device node in the network increased, the probability of collision can increase, and the speed of transfer of data also can reduce greatly, therefore was suitable for the less home networking occasion of node device.The MAC agreement of HomePNA 3.0 also combines competition and does not have bumping method, and wherein, it uses CSMA/CD to realize asynchronous MAC protocol, the media interviews control based on priority is provided, and has used signaling protocol to solve the media collision problem; And use the CSMA/CA technology to realize synchronous MAC agreement, under host computer control, avoid conflict by the sequential of planning good all media interviews in advance.Equally, when device node increased in network, the delay that collision brings also increased greatly.
At this, the invention provides and a kind ofly be subdivided into the basis with family network service, at the different pieces of information transmission characteristic of business, to delineation of activities QoS priority level efficiently based on the hybrid MAC mechanism of traffic differentiation; According to the QoS of survice priority level, adopt limited competition agreement at the MAC layer, guarantee the optimization high efficiency of transmission of miscellaneous service data, provide sufficient QoS to ensure from the bottom of network based on traffic differentiation and forecasting mechanism; Adopt dynamic self-adapting to adjust strategy simultaneously, for the device extension of home network provides good support.
Use benefit of the present invention to be: at the different pieces of information transmission characteristic of business, provide the QoS bottom of different brackets to ensure, thereby under the constant situation of bandwidth, guarantee the optimization high efficiency of transmission of miscellaneous service data, thereby improved the user experience of high resolution audio and video program etc., and provide good support for the device extension of home network.
Summary of the invention
The object of the present invention is to provide a kind of home network hybrid MAC mechanism based on traffic differentiation.This mechanism is subdivided into the basis with the business of home network, at the different pieces of information transmission characteristic of business, to delineation of activities QoS priority level; According to the QoS of survice priority level, adopt limited competition agreement at the MAC layer, guarantee the optimization high efficiency of transmission of miscellaneous service data, provide sufficient QoS to ensure from the bottom of network based on traffic differentiation and forecasting mechanism; Adopt dynamic self-adapting to adjust strategy simultaneously, for the device extension of home network provides good support.
For achieving the above object, the invention provides a kind of family coaxial network MAC layer data transmission method based on traffic differentiation, comprise the following steps:
1) is each traffic set priority;
2) be pairing transmission time slot number in the single transmission cycle of each priority level initializing; Higher priority is corresponding to more number of time slots, and lower priority is corresponding to less number of time slots;
3),, be the corresponding transmission time slot number of each traffic assignments of different priorities according to the priority of business in dispatching cycle;
4) transmit each professional data at transmission cycle.
Wherein, for the different business data of equal priority, adopt the corresponding transmission time slot of competition mechanism contention.
Further, in the embodiments of the invention, a kind of preferred family coaxial network MAC layer data transmission method based on traffic differentiation also is provided, this MAC layer data transmission method on traditional MAC manufacturing basis, adopted targetedly service feature analyze extractive technique, data transfer mode handoff technique, based on the limited competition agreement and the dynamic self-adapting adjustment technology of traffic differentiation and forecasting mechanism.
Wherein, service feature is analyzed extractive technique and is used for QoS demands such as the data characteristics of business and real-time are analyzed, and the different QoS requirements of business is mapped as different service priority, and (mapping of service priority can be adopted IEEE 802.1D definition form.Certainly, this is not the unique projected forms of service priority, those skilled in the art also can be as required carry out self-defined to the mapping scheme of service priority), the transmission time of channel is divided time slot, be the more time slot of other data allocations of high priority, thereby the real-time that satisfies the physical quantity data requires, multimedia QoS guarantees and the file data transmission, and implements simple, convenient, reliable.The division of service priority can also can be divided according to other characteristic parameters according to data to the requiring type to be divided into the network system order, have mandatory real-time data service that the time limit requires, have the flexible real-time data service that periodically requires, do not have 4 kinds of ranks such as non real-time data service that the time limit requires of real-time.
The data transfer mode handoff technique is used for requiring different data at real-time, uses compound transmission mode to carry out transfer of data.Compound transmission mode is meant the transmission means that normal transmission pattern and priority transmission mode combine.Under the normal transmission pattern, by access-control protocol, the data of different priorities all have an opportunity to transmit.When certain website does not have high priority not and data that surpass the buffer queue upper limit threshold will transmit the time, just on network, broadcast a high priority transfer request, and carry information such as service priority.Home gateway receives whether the back switches to priority transmission mode (home gateway can be made a ruling according to the current factor such as priority transmission mode that whether switched to) according to the network condition ruling, if agree to switch, the broadcast frame that the priority transmission mode begins will be sent.At this moment the data that the data of this website and network medium priority are higher can be transmitted.After this transfer of data finishes, return the normal transmission pattern.The priority transmission mode can solve high priority, high data rate burst, is badly in need of the situation that the home network bandwidth is supported.Therefore, adopt compound transmission mode can guarantee the transmission quality of home network data flow and higher bandwidth availability ratio.For the situation of the media business of two-forty, high priority burst, compound transmission mode can guarantee that it carries out smoothly, and more excellent service quality is provided.
Limited competition agreement based on traffic differentiation and forecasting mechanism is used for when channel is used in a plurality of equipment applications, to the distribution of channel.The limited competition agreement combines collision-free protocol and contention protocols advantage separately, by reasonable grouping to equipment, make the equipment competitive channel in the same grouping, pass through no bumping method request channel successively between different grouping, thereby make the time delay of its performance under underload reduce, as far as possible near contention protocols, and the arbitration expense under heavy load reduces, near collision-free protocol.Based on the limited competition agreement of traffic differentiation, then, between service with different priority levels, adopt conflict free mode request channel successively according to the service priority of request channel; And between the equal priority business, adopt the mode competitive channel of limited competition.Forecasting mechanism is meant, the queue scheduling and the buffering situation parameter that in Frame, encapsulate according to the business in last cycle, judge whether this equipment uses channel in this cycle, use the equipment of channel to divide into groups separately with estimating, reduce the possibility of conflict in the grouping, thereby reasonably, improve channel utilization for the equipment in the network divides into groups.By the hybrid MAC mechanism of collision-free protocol in conjunction with limited contention protocols, the channel utilization in the time of can improving heavy load is distinguished sex service to each priority service under the certain situation of bandwidth, guarantee that preferentially the high-quality of high-priority service is carried out; Under the situation of underload, the time-delay of this mechanism is lower than collision-free protocol; And the adding at any time of support home equipment and the expansion of home network.
The request that the dynamic self-adapting adjustment technology then adds, finds range and exit network by control frame period treatment website, the online detection mechanism of website, dynamically adjust the interior transmission time slot number of single transmission cycle of professional QoS priority level and distribution, apace website is rationally set up grouping and dynamic management, and dynamically adjust professional sending order.Home gateway sends probe messages to the website of mourning in silence for a long time, and whether detecting devices is online, thereby dynamically updates site list, and outage or unusual equipment take place in deletion.Because business such as high resolution audio and video etc. has very strong continuity, according to should the shared bandwidth of business in the last transmission cycle, can make prediction comparatively accurately to the required bandwidth of transmission cycle next time.Therefore, the website at professional place is encapsulation queue scheduling and buffering situation parameter in the Frame of transmission, bandwidth, delay requirement.Home gateway is according to this parameter, and the professional time slot required in next transmission cycle of prediction also distributes corresponding number of time slot for it.If a website has the business of multiple priority, then adopt piggy mechanism, when the highest priority traffic of this website was used channel, its all business were sending successively according to priority order from high to low, thereby reduce the website switching times that uses channel, rationally improve service efficiency.
Fully utilize above technology, home network hybrid MAC mechanism based on traffic differentiation provided by the present invention is specific as follows: in the home network, after professional the initiation, home gateway utilizes service feature to analyze extractive technique, by analyzing QoS demands such as professional data characteristics and real-time, delineation of activities is gone out service priority.According to the service priority result, home network adopts the dynamic self-adapting adjustment technology, sets up the site list of each service priority correspondence, rationally sets up grouping and dynamic management to initiating this professional website apace.And finish, withdraw from and the adding situation of new business along with existing professional, by the request that control frame period treatment website adds, finds range and exit network, dynamically adjust site list; And can pass through modes such as User Defined, network monitor, and adjust professional QoS priority level, apace website is rationally set up grouping and dynamic management.According to each professional priority level and professional queue scheduling and the buffering situation that in Frame, encapsulates, for each priority service distributes different number of time slots, the QoS of so preferential assurance high-priority service, thus satisfy the real-time requirement of physical quantity data.At real-time and non real-time data, home gateway utilizes the data transfer mode handoff technique, adopts the MAC data-transmission mode with prioritization.Under the normal transmission pattern, by limited competition agreement based on traffic differentiation and forecasting mechanism, when channel is used in a plurality of equipment applications, according to the service priority of request channel to channel allocation.Between service with different priority levels, adopt no bumping method request channel successively; And between the equal priority business, adopt mode competitive channel based on the limited competition of forecasting mechanism.At this moment, the data of different priorities all have an opportunity to transmit.When having the very high mass data of priority level, to transmit certain website, just high priority transfer request of broadcasting on network, at this moment network changes the priority transmission mode in the interference of home gateway, and the data that the data of this website and network medium priority are higher can be transmitted.After the transfer of data with priority level finishes, return the normal transmission pattern.
Compare with present existing home network MAC mechanism, home network hybrid MAC mechanism based on traffic differentiation of the present invention organically combines the demand of business to QoS with the access control of MAC medium, by specific aim applied business signature analysis extractive technique, the data transfer mode handoff technique, the distributorship agreement of shared channel and dynamic self-adapting adjustment technology, directly from the high professional required bandwidth resources of the bottom guaranteed qos demand of network, compare the MAC mechanism of traditional resource reservation, more flexible, and keep bandwidth in the business of multiple QoS demand, reasonably to be distributed and utilization efficiently at any time; Simultaneously, make full use of the interactivity of home network, the user can set by scene, self-defined setting, and is mutual by input equipment such as remote controller and home gateway, and specifying needs preferential business, thereby improves the user experience that the home network multiple business is carried out.
Description of drawings
Fig. 1 the present invention program's a typical application scenarios schematic diagram;
The transmission course instance graph of eight priority of Fig. 2; This model all is in the idling cycle that produces when static by competing cycle, transmission cycle and all stations and forms.
Specific embodiments
This home network hybrid MAC mechanism based on traffic differentiation provided by the present invention organically combines the demand of business to QoS with the access control of MAC medium, service feature by home network is classified to it, can be from the high professional required bandwidth resources of the bottom guaranteed qos demand of network, compare traditional resource reservation mechanism flexible and controllable more, and the self adaptation adjustment, in the business of multiple QoS demand, reasonably distributed and utilization efficiently to keep bandwidth.Simultaneously, make full use of the interactivity of home network, the user can set by scene, self-defined setting, and is mutual by input equipment such as remote controller and home gateway, and specifying needs preferential business, thereby improves the user experience that the home network multiple business is carried out.This method can be applicable to carry out business such as multiple high resolution audio and video in home network, introduce the concrete application implementation of this method below in conjunction with the process of carrying out of business.
From the family network service characteristic, information flow mainly comprises: physical quantity data (as: voltage, electric current, power, temperature, flow, switching value etc.), multi-medium data (as audio frequency, image, video etc.), file data (as: data of printing, shared documentation etc.).These data can be divided into a plurality of ranks according to the requirement to real-time, for example:
(1) first rank: network system order data.The initialization of this class data decision network, running status etc., necessary real-time and the correctness that guarantees data.For example to network system orders such as the distribution of data priority and administration order, bus reset order, netinit orders.
(2) second level: have the mandatory real time data that the time limit requires.These class data have propagation delay time limited, that determine, and must guarantee the correctness of data, otherwise the reliability of equipment just can't satisfy even can cause the accident.For example control the measurement and the control data of subnet.
(3) third level is other: have the flexible real time data that periodically requires.This class data allow limited but can uncertain propagation delay times, and a spot of error in data there is no big harm for example transmission of Voice ﹠ Video data flow.
(4) fourth stage is other: the non real-time data that do not have the time limit requirement.These class data do not have the propagation delay time requirement of strict regulations, for example file data, mimeograph documents etc.
The present invention program divides time slot to the transmission time of channel, and for other data of high priority, according to its occupied bandwidth, for it distributes more time slot, thereby preferential guaranteed qos requires height, postpones to require carrying out smoothly of little business.
The present invention program's a typical application scenarios as shown in Figure 1, wherein, three nets such as Internet, cable television network, telecommunications network all can pass through the home gateway intercommunication, the multiple home equipment of household internal is realized interconnected as equipment such as PC, TV, top box of digital machines by the mode and the home gateway of wired combining wireless.In conjunction with present existing home network networking technology, can realize that the information of multiple network and home equipment interconnects.
In conjunction with above application scenarios, the applied MAC of the inventive method mechanism idiographic flow is described below, as Fig. 2:
When (1) member in the family need use home equipment, opening device.Equipment begins to intercept channel, when listening to the application adding and withdrawing from the cycle, sends application at corresponding time slot and adds broadcast frame; After home gateway is received this request, in the equipment control table, and be its distribution network address with facility registration, the control frame that will comprise the network address and numbering is broadcast to all devices, notifies this equipment to join in the home network; After receiving this control frame, new equipment reaches clock synchronization by sending the ranging information frame to home gateway and handling the mode of replying with home gateway, and other equipment need be kept silent, in order to avoid cause conflict.
(2) user triggers a certain business (as carry out video request program VOD, begin to upload/data download business etc.) of opening; Carry this professional equipment by analyzing service parameter, according to certain policy mappings QoS of survice priority, and begin to intercept channel, transmitting channel application bit in this QoS priority contention slots;
(3) if in this contention slots, has only this business request channel, then apply for successfully: if in this contention slots, a plurality of professional request channels are simultaneously arranged, then can clash: the business that clashes is according to site number, and (as: the priority binary system preferentially uses channel to counting agreement, the little website of numbering according to fixing strategy; Strategies such as self adaptation tree search protocol) right to use of ruling channel;
(4) after contention slots finishes, the number of time slots that home gateway takies in this transmission cycle for each traffic assignments.During professional the transmission for the first time, home gateway is according to its QoS priority assignment number of time slots; Otherwise, according to this business in a last transmission cycle, queue scheduling that in Frame, encapsulates and buffering situation, bandwidth, delay requirement distribute time slot.Under the situation of resource-constrained, home gateway preferentially satisfies the requirement of high-priority service with certain strategy.Number of time slots is encapsulated in transmission control frame and broadcasting, enters transmission cycle afterwards;
(5) when transmission cycle arrives, the respective site of bearer service is according to the transmission control frame named order and in the number of time slots that correspondence takies, transmit corresponding data, and in Frame, carry parameters such as professional required bandwidth, delay requirement, website formation situation.If a website has the business of multiple priority, then adopt piggy mechanism, when the highest priority traffic of this website was used channel, its all business were sending successively according to priority order from high to low;
(6) after all apply for the website end of transmission of channel, enter following one-period.That is: the website application adds and withdraws from cycle, each priority request channel cycle and transmission cycle.
(7) priority level of the data that will transmit when certain website reaches priority threshold, and when the data that the data volume of these data surpasses the buffer queue upper limit threshold will transmit, the just high priority transfer request of broadcasting on network of this website, and carry information such as service priority.Described priority threshold is the priority threshold of predefined triggering priority transmission mode, and the priority level of data surpasses or equals this priority threshold is one of prerequisite that triggers the priority transmission mode.Whether home gateway switches to priority transmission mode (home gateway can make the award according to the current factors such as priority transmission mode that whether switched to) according to the network condition ruling after receiving the high priority transfer request, if agree to switch, the broadcast frame that the priority transmission mode begins will be sent.At this moment, the data and the identical or higher data of network medium priority of this application website can be transmitted.Behind this partial data end of transmission, the priority mode request is withdrawed from broadcasting, returns the normal transmission pattern.The priority transmission mode can solve high priority, high data rate burst, is badly in need of the situation that the home network bandwidth is supported.Therefore, adopt compound transmission mode can guarantee the transmission quality of home network data flow and higher bandwidth availability ratio.
When (8) equipment in the home network is normally closed, before shutdown, intercept channel, when listening to the application adding and withdrawing from the cycle, send application at corresponding time slot and withdraw from broadcast frame; After home gateway is received this request, will delete in the equipment slave unit admin table, discharge its distribution network address and numbering.
(9) if improper the closing of equipment (as situations such as the unexpected power down of certain equipment, misoperations) in the home network taken place or break down, can't send application and withdraw from broadcast frame.Whether normally home gateway sends message by the online detection mechanism of website to the equipment of mourning in silence for a long time, survey this equipment line.If transmission is not all received device replied, home gateway for several times and will be thought that this equipment exits network, and with deleting in this equipment slave unit admin table, discharges its distribution network address and numbering.
Claims (5)
1. the family coaxial network MAC layer data transmission method based on traffic differentiation comprises the following steps:
1) is each traffic set priority;
2) be pairing transmission time slot number in the single transmission cycle of each priority level initializing; Higher priority is corresponding to more number of time slots, and lower priority is corresponding to less number of time slots;
3),, be the corresponding transmission time slot number of each traffic assignments of different priorities according to the priority of business in dispatching cycle;
4) transmit each professional data at transmission cycle.
2. MAC layer data transmission method according to claim 1, it is characterized in that, employing is carried out channel allocation based on the limited competition agreement of traffic differentiation and forecasting mechanism, for each business that belongs to same priority, adopt the mode of competition to obtain channel, pass through no bumping method request channel successively between service with different priority levels.
3. MAC layer data transmission method according to claim 1, it is characterized in that described priority is followed successively by from high to low: the network system order, have mandatory real-time data service that the time limit requires, have the flexible real-time data service that periodically requires, do not have the non real-time data service that the time limit requires.
4. MAC layer data transmission method according to claim 1 is characterized in that, in the described step 4), and the compound transmission mode that transfer of data adopts normal transmission to combine with the priority transmission; Under the normal transmission pattern, by access-control protocol, the data of different priorities all have an opportunity to transmit; When certain website does not have high priority not and data that surpass the buffer queue upper limit threshold will transmit the time, just on network, broadcast a high priority transfer request, the entrained information of described high priority transfer request comprises service priority information; Home gateway receives whether the back switches to the priority transmission mode according to the network condition ruling, switch if agree, the broadcast frame that the priority transmission mode begins will be sent, at this moment the data that the data of this website and network medium priority are identical or higher can be transmitted, after this transfer of data finishes, return the normal transmission pattern.
5. MAC layer data transmission method according to claim 2, it is characterized in that, described step 2) in, the request that adds, finds range and exit network by control frame period treatment website, the online detection mechanism of website, dynamically adjust the professional QoS priority level and the transmission time slot number of distribution, apace website is rationally set up grouping and dynamic management, and dynamically adjust professional sending order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101122436A CN101783758B (en) | 2009-08-28 | 2010-02-08 | Family coaxial network MAC layer data transmission method based on service differentiation |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910091676 | 2009-08-28 | ||
| CN200910091676.5 | 2009-08-28 | ||
| CN2010101122436A CN101783758B (en) | 2009-08-28 | 2010-02-08 | Family coaxial network MAC layer data transmission method based on service differentiation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101783758A true CN101783758A (en) | 2010-07-21 |
| CN101783758B CN101783758B (en) | 2012-07-04 |
Family
ID=42523583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101122436A Expired - Fee Related CN101783758B (en) | 2009-08-28 | 2010-02-08 | Family coaxial network MAC layer data transmission method based on service differentiation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101783758B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664781A (en) * | 2012-04-10 | 2012-09-12 | 安徽科力信息产业有限责任公司 | Method for controlling multi-node RS485 bus data transmission right |
| CN103297523A (en) * | 2013-05-31 | 2013-09-11 | 汉柏科技有限公司 | Site-based security gateway linkage method and device |
| CN104539501A (en) * | 2014-12-31 | 2015-04-22 | 陕西烽火电子股份有限公司 | RS485 bus communication device and method for transmitting multiple paths of voice data |
| WO2016074621A1 (en) * | 2014-11-14 | 2016-05-19 | Huawei Technologies Co., Ltd. | Scheduler and method for layer-based scheduling queues of data packets |
| CN106455073A (en) * | 2016-08-23 | 2017-02-22 | 国网冀北电力有限公司信息通信分公司 | Channel distribution method of security services in power wireless private network and central base station |
| CN107070695A (en) * | 2017-01-18 | 2017-08-18 | 东南大学 | A kind of bus-network loaded self-adaptive communication means |
| CN107135171A (en) * | 2016-02-29 | 2017-09-05 | 华为技术有限公司 | The method and media stream equipment of a kind of transmission of multimedia streams |
| CN107707326A (en) * | 2017-11-10 | 2018-02-16 | 鹤壁天海电子信息系统有限公司 | A kind of TDMA two-stage time slot management methods of terminaloriented |
| CN109873660A (en) * | 2019-04-18 | 2019-06-11 | 国网山东省电力公司菏泽供电公司 | Internet of Things network control system and control method based on power line communication |
| CN114389954A (en) * | 2022-01-18 | 2022-04-22 | 中科边缘智慧信息科技（苏州）有限公司 | Data transmission control method and system based on fixed bandwidth |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7796536B2 (en) * | 2006-10-17 | 2010-09-14 | Honeywell International Inc. | Dynamic auto-reconfigurable time division multiple access |
-
2010
- 2010-02-08 CN CN2010101122436A patent/CN101783758B/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664781A (en) * | 2012-04-10 | 2012-09-12 | 安徽科力信息产业有限责任公司 | Method for controlling multi-node RS485 bus data transmission right |
| CN103297523A (en) * | 2013-05-31 | 2013-09-11 | 汉柏科技有限公司 | Site-based security gateway linkage method and device |
| WO2016074621A1 (en) * | 2014-11-14 | 2016-05-19 | Huawei Technologies Co., Ltd. | Scheduler and method for layer-based scheduling queues of data packets |
| CN104539501A (en) * | 2014-12-31 | 2015-04-22 | 陕西烽火电子股份有限公司 | RS485 bus communication device and method for transmitting multiple paths of voice data |
| CN107135171A (en) * | 2016-02-29 | 2017-09-05 | 华为技术有限公司 | The method and media stream equipment of a kind of transmission of multimedia streams |
| CN107135171B (en) * | 2016-02-29 | 2021-06-29 | 华为技术有限公司 | Multimedia stream transmission method and media stream sending equipment |
| CN106455073A (en) * | 2016-08-23 | 2017-02-22 | 国网冀北电力有限公司信息通信分公司 | Channel distribution method of security services in power wireless private network and central base station |
| CN107070695A (en) * | 2017-01-18 | 2017-08-18 | 东南大学 | A kind of bus-network loaded self-adaptive communication means |
| CN107070695B (en) * | 2017-01-18 | 2020-03-31 | 东南大学 | Bus type network load self-adaptive communication method |
| CN107707326A (en) * | 2017-11-10 | 2018-02-16 | 鹤壁天海电子信息系统有限公司 | A kind of TDMA two-stage time slot management methods of terminaloriented |
| CN107707326B (en) * | 2017-11-10 | 2019-08-23 | 鹤壁天海电子信息系统有限公司 | A kind of TDMA two-stage time slot management method of terminaloriented |
| CN109873660A (en) * | 2019-04-18 | 2019-06-11 | 国网山东省电力公司菏泽供电公司 | Internet of Things network control system and control method based on power line communication |
| CN109873660B (en) * | 2019-04-18 | 2021-05-04 | 国网山东省电力公司菏泽供电公司 | Internet of things control system and control method based on power line communication |
| CN114389954A (en) * | 2022-01-18 | 2022-04-22 | 中科边缘智慧信息科技（苏州）有限公司 | Data transmission control method and system based on fixed bandwidth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101783758B (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101783758B (en) | Family coaxial network MAC layer data transmission method based on service differentiation | |
| JP5168699B2 (en) | Parameterized quality of service architecture in networks | |
| US20070153815A1 (en) | System and Method For Establishing And Maintaining Simultaneous Operation of Asynchronous and Isochronous Communications | |
| US7724764B2 (en) | Adaptive synchronous media access protocol for shared media networks | |
| CN101809940B (en) | Bandwidth reservation for data flows in interconnection networks | |
| CA2762683C (en) | Quality of service for distribution of content to network devices | |
| CN101827027B (en) | Interlayer coordination-based home network QoS guarantee method | |
| EP2119131A2 (en) | Parameterized quality of service in a network | |
| US20200178126A1 (en) | Method And System For Providing Reduced Bandwidth Acquisition Latency | |
| US7738480B2 (en) | Hybrid access to a contention-free period channel | |
| US20050122904A1 (en) | Preventative congestion control for application support | |
| Zhang et al. | BIST generators for sequential faults | |
| JP2003209554A (en) | Method for ensuring medium access in wireless network | |
| CN101632268A (en) | Parameterized quality of service architecture in the network | |
| CN101321112A (en) | Sharing media access method, system and single business equipment | |
| CN102938743A (en) | Data transmission method and device | |
| CN101156391A (en) | Method to prioritize videos distributed in a wireless lan and device implementing the method | |
| Kays et al. | Wireless ad-hoc networks with high node density for home AV transmission | |
| KR100414061B1 (en) | Media connection controlling method for home gateway device | |
| Vesco et al. | TDuCSMA: Efficient support for triple-play services in wireless home networks | |
| Vesco et al. | Efficient support for video communications in wireless home networks | |
| CN108495354B (en) | Access control method | |
| Jiang et al. | Quality of service in the home network | |
| Twu et al. | A novel MAC protocol for broadband communication over CATV-based MANs | |
| Aslam et al. | Delay constrained resource allocation for wireless home networks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20200208 |