CN102769830B - Multicast message sending method and device, the network equipment - Google Patents
Multicast message sending method and device, the network equipment Download PDFInfo
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- CN102769830B CN102769830B CN201210258195.0A CN201210258195A CN102769830B CN 102769830 B CN102769830 B CN 102769830B CN 201210258195 A CN201210258195 A CN 201210258195A CN 102769830 B CN102769830 B CN 102769830B
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Abstract
The embodiment of the invention discloses a kind of multicast message sending method, device and the network equipment, the embodiment of the present invention is by being divided into multiple message group by multiple multicast messages to be sent, n in message group message clean culture is sent to current site, send success rate according to the clean culture of current site and judge whether predetermined switch condition is set up, when switch condition is set up, remaining message clean culture in message group is sent to current site, in the invalid situation of switch condition, remaining message multicast in message group is sent to current site, clean culture sends the actual channel conditions that success rate reflects current site, thus can carry out according to the actual channel conditions of current site the process that multicast turns clean culture, and then the problem of the transmission success rate that effectively can not improve multicast message in prior art can be solved.
Description
Technical field
The present invention relates to wireless communication system, particularly, relate to a kind of multicast message sending method and device, the network equipment.
Background technology
A typical WLAN (wireless local area network) (WLAN, WirelessLocalNetwork) comprises website (STA, Station) (or being called user) and access device (AP, AccessPoint), and STA is by AP accesses network resource.
In the communication process of AP and STA, AP can to STA multicast or unicast message.During multicast message, message is only sent to STA by the mode of multicast by AP.During unicast message, message is sent to STA by the mode of clean culture by AP, and STA returns response message to AP after successfully receiving message.Visible clean culture will take more system resource than multicast, but clean culture has higher transmission success rate than multicast, and wherein, clean culture success rate is the ratio that the quantity of the response message that STA returns for unicast message and AP send to the quantity of the unicast message of STA.Like this, in the processing procedure of multicast, if the number of the STA under multicast group is more, because the signal strength signal intensity of different STA is inconsistent, will cause the performance issue under multi-user multicast environment, also namely system cannot determine whether multicast message is successfully received by each STA.
At present, transferring clean culture transmission to by being sent by multicast by message, the success rate of the multicast message under multi-user multicast environment can be improved.Such as, judge whether that needing to transfer clean culture to by multicast sends according to the quantity of the STA of AP access, particularly, when the quantity of the STA of AP access is greater than threshold value, message multicast is sent to the STA of access, when the quantity of the STA of AP access is less than threshold value, message clean culture is sent to the STA of access.Or, judge whether that needing to transfer clean culture to by multicast sends according to the receiving velocity of the STA recorded before, particularly, when the receiving velocity of STA is greater than multicast rate, message multicast is sent to STA, when the receiving velocity of STA is less than multicast rate, message clean culture is sent to STA.
But, in above-mentioned scheme, effectively can not improve the transmission success rate of multicast message.Such as, in the first scheme above-mentioned, although the quantity of the STA of AP access is on the one hand less than threshold value, if but the STA of access all apart from AP very closely and channel quality is fine, send message by multicast just can ensure the success rate that message sends and reduce the system resource taken, and adopt clean culture transmission will take more system resource, adopt multicast to send message when the quantity of access STA is more on the other hand, can not ensure that raising multicast message sends success rate.In above-mentioned first scheme, although AP judges according to the receiving velocity of STA, but the receiving velocity of STA is AP to be recorded according to transmission situation before, the channel quality of the current reality of STA can not be reflected, such as STA does not have in a long time and AP carries out the mutual of unicast message, then the receiving velocity of the STA of AP record just can not reflect the channel situation that STA is current, so just effectively can not improve the transmission success rate reporting literary composition.
Visible, in the prior art, the transmission success rate of multicast message effectively can not be improved.
Summary of the invention
In view of this, embodiments provide a kind of multicast message sending method, device and the network equipment, in order to solve the problem of the transmission success rate that effectively can not improve multicast message in prior art.
Embodiment of the present invention technical scheme is as follows:
A kind of multicast message sending method, comprising: according to predetermined dividing unit, and the multicast message of the S of a current site described dividing unit of giving to be sent is divided into T message group, and each message group comprises the message of m described dividing unit; For current message group, the message clean culture of the n in this message group described dividing unit is sent to described current site; Wherein, S, T, m and n are natural number, and T>2, m>2, n<m; Send success rate according to the clean culture determined and judge whether predetermined switch condition is set up, when described switch condition is set up, all the other message clean cultures in current message group are sent to described current site, in the invalid situation of described switch condition, all the other the message multicasts in current message group are sent to described current site.
A kind of multicast message dispensing device, comprising: division unit, and for according to predetermined dividing unit, the multicast message of the S of a current site described dividing unit of giving to be sent is divided into T message group, and each message group comprises the message of the individual described dividing unit of m; First transmitting element, for for current message group, sends to described current site by the message clean culture of the n in this message group described dividing unit; Wherein, S, T, m and n are natural number, and T>2, m>2, n<m; For sending success rate according to the clean culture determined, judging unit, judges whether predetermined switch condition is set up; Second transmitting element, for when described judging unit judges that described switch condition is set up, all the other message clean cultures in current message group are sent to described current site, in the invalid situation of described switch condition, all the other the message multicasts in current message group are sent to described current site.
A kind of network equipment, comprises multicast message as above and sends dress.
The embodiment of the present invention is by being divided into multiple message group by multiple multicast messages to be sent, n in message group message clean culture is sent to current site, send success rate according to the clean culture of current site and judge whether predetermined switch condition is set up, when switch condition is set up, remaining message clean culture in message group is sent to current site, in the invalid situation of switch condition, remaining message multicast in message group is sent to current site, clean culture sends the actual channel conditions that success rate reflects current site, thus can carry out according to the actual channel conditions of current site the process that multicast turns clean culture, and then the problem of the transmission success rate that effectively can not improve multicast message in prior art can be solved.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
The workflow diagram of the multicast message sending method that Fig. 1 provides for the embodiment of the present invention;
The structured flowchart of the multicast message dispensing device that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the scene schematic diagram that the embodiment of the present invention is specifically implemented;
The workflow diagram that Fig. 4 specifically implements for the multicast message sending method that the embodiment of the present invention provides;
The message structure schematic diagram that Fig. 5 specifically implements for the multicast message sending method that the embodiment of the present invention provides.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described, should be appreciated that embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
The embodiment of the present invention for can not effectively improve in prior art multicast message transmission success rate problem, propose a kind of multicast message delivery plan, to solve this problem.In the technical scheme of the embodiment of the present invention, by multicast message to be sent is divided into multiple message group, for each message group, n in message group message clean culture is sent to current site, send success rate by clean culture to determine whether to need to carry out the process that multicast turns clean culture, and clean culture sends the channel situation that success rate reflects current site reality, thus multicast message clean culture transmission or multicast can be determined to send to current site according to the channel situation of current site reality, the transmission success rate of multicast message can be improved, improve the multicast performance under multi-user environment.
The present invention is described in detail below.
Fig. 1 shows the workflow diagram of the multicast message sending method that the embodiment of the present invention provides, and as shown in Figure 1, the method comprises:
Step 11, according to predetermined dividing unit, the multicast message of S dividing unit of current site of giving to be sent is divided into T message group, and each message group comprises the message of the individual described dividing unit of m; Wherein, S, T, m are natural number, and T>2, m>2;
Particularly, predetermined dividing unit comprises message number or message transfer time, such as, according to message number, 200 multicast messages are divided into 10 message groups, each message group comprises 20 messages, or being dividing unit according to every 50 milliseconds, is that the multicast message of 1000 milliseconds is divided into 5 message groups by the transmission time, each message group comprises the message that the transmission time is 200 milliseconds, and also namely each message group comprises the message that 4 transmission times are 50 milliseconds;
Preferably, divide the number of the message group obtained, the numerical value fixed can be set to, also can set in advance according to the situation of embody rule, such as, can the channel situation passing according to current site set, namely when the passing receiving velocity of recorded current site is higher, multicast message to be sent can be divided into the message group of fewer number of, when the passing receiving velocity of the current site recorded is lower, multicast message to be sent is divided into the message group of greater number, like this in the process of follow-up judgement multicast or clean culture, for the rule of thumb good website of channel situation, reduce and judge number of times, save system resource, for the website that rule of thumb channel situation is poor, increase and judge number of times, success rate is sent to improve message,
Step 12, for current message group, the message clean culture of n dividing unit in this message group is sent to current site; Wherein, n is natural number, and n<m;
Such as, when each message group comprises 20 messages, front 5 messages in current message group are sent to current site; Or when to comprise 4 transmission times be the message of 50 milliseconds to each message group, the message being 50 milliseconds by front 2 transmission times in current message group sends to current site;
Preferably, similar with the processing method of the number dividing message group in above-mentioned steps 11, for the value of n, also can be fixing numerical value, or preset according to concrete applicable cases, repeat no more here;
Step 13, send success rate according to the clean culture determined and judge whether predetermined switch condition is set up, when switch condition is set up, all the other message clean cultures in current message group are sent to current site, in the invalid situation of switch condition, all the other the message multicasts in current message group are sent to current site;
Particularly, success rate determination clean culture transmission rate is sent according to clean culture, best transmission rate is determined according to clean culture transmission rate, determine to send success rate determination clean culture transmission rate according to clean culture and determine that the process of best transmission rate is prior art according to clean culture transmission rate herein, such as, the method sending success rate determination clean culture transmission rate according to clean culture comprises: based on the algorithm of packet loss, based on the algorithm of continual data package dropout or based on signal to noise ratio (SNR, SignalNoiseRatio) algorithm, wherein, algorithm based on packet loss comprises: on the basis of original clean culture transmission rate, reduce clean culture transmission rate when the packet loss that in certain hour, clean culture sends is greater than threshold value, otherwise then improve clean culture transmission rate, algorithm based on continual data package dropout comprises: when continual data package dropout number is greater than threshold value on the basis of original clean culture transmission rate changing down, otherwise then improve clean culture transmission rate, algorithm based on SNR comprises: the SNR value according to present channel reduces or improve clean culture transmission rate, determine that each equipment manufacturer of method of best transmission rate has respective algorithm according to clean culture transmission rate, normally multiplely determine that the algorithm of clean culture transmission rate is to be optimized process in conjunction with above-mentioned, judge whether best transmission rate meets switch condition, wherein, switch condition comprises: best transmission rate is less than multicast transmission rate, multicast transmission rate can be fixing multicast transmission rate or dynamic multicast transmission rate.
Can find out according to above-mentioned processing procedure, by multicast message to be sent is divided into multiple message group, for each message group, n in message group message clean culture is sent to current site, send success rate by clean culture to determine whether to need to carry out the process that multicast turns clean culture, and clean culture sends the channel situation that success rate reflects current site reality, thus can dynamically determine multicast message clean culture transmission or multicast to send to current site according to the channel situation of current site reality, the transmission success rate of multicast message can be improved, improve the multicast performance under multi-user environment.
Method shown in Fig. 1 can be realized by hardware configuration, also can be realized by following software program, namely be realized by device as shown in Figure 2.
Fig. 2 shows the structured flowchart of the multicast message dispensing device that the embodiment of the present invention provides, and as shown in Figure 2, this device comprises:
Division unit 21, for according to predetermined dividing unit, the multicast message of S dividing unit of current site of giving to be sent is divided into T message group, and each message group comprises the message of m dividing unit; Particularly, division unit comprises message number or message transfer time; Wherein, S, T, m are natural number, and T>2, m>2;
First transmitting element 22, is connected to division unit 21, for for current message group, the message clean culture of n dividing unit in this message group is sent to current site; Wherein, n is natural number, and n<m;
Judging unit 23, is connected to the first transmitting element 22, and the clean culture transmission success rate determined for the system after sending message according to the first transmitting element 22 clean culture judges whether predetermined switch condition is set up;
Particularly, judging unit 23 comprises: determination module 231, is connected to the first transmitting element 22, for sending success rate determination clean culture transmission rate according to clean culture, determines best transmission rate according to clean culture transmission rate;
Judge module 232, is connected to determination module 231, for judging whether the best transmission rate that determination module 231 is determined meets switch condition, and wherein, switch condition comprises: best transmission rate is less than multicast transmission rate; Multicast transmission rate comprises fixing multicast transmission rate or dynamic multicast transmission rate;
Second transmitting element 24, be connected to judging unit 23 and division unit 21, for when judging unit 23 judges that switch condition is set up, all the other message clean cultures in current message group are sent to current site, in the invalid situation of switch condition, all the other the message multicasts in current message group are sent to current site.
By device as shown in Figure 2, also can dynamically determine multicast message clean culture transmission or multicast to send to current site according to the channel situation of current site reality, the transmission success rate of multicast message can be improved, improve the multicast performance under multi-user environment.
The embodiment of the present invention additionally provides a kind of network equipment, and this network equipment comprises packet transmission device as shown in Figure 2.In the concrete process implemented, this network equipment can be AP.
Below the situation that the present invention specifically implements is described.
Fig. 3 shows the scene that the embodiment of the present invention is specifically implemented, and the WLAN shown in Fig. 3 comprises AP31 and multiple STA32, after each STA32 certification is linked into AP31, is stored the server 33 of Internet resources by AP31 access.When having STA32(or being called current STA) join after in the multicast group of AP31, AP31 will send multicast message to current STA32.
Fig. 4 shows the workflow diagram specifically implemented according to the multicast message sending method of the embodiment of the present invention, and as shown in Figure 4, this handling process specifically implemented comprises:
Step 41, AP are in units of message number, and be divided into 5 message groups to 100 multicast messages (PKT) of current STA by be sent, each message group comprises 20 messages, and the structure of the message group after division as shown in Figure 5;
Front 5 message clean cultures in this message group, for current message group, are sent to current STA by step 42, AP;
Step 43, AP receive the response message that STA feeds back for unicast message, such as, receive 4 response messages;
The ratio of the number of the number of the response message received and the unicast message of transmission is defined as clean culture and sends success rate by step 44, AP, and such as, it is 80% that clean culture sends success rate;
Step 45, AP send according to clean culture the clean culture transmission rate that success rate determines current STA, and determine the best transmission rate of current STA according to clean culture transmission rate;
Step 46, AP judge whether best transmission rate is less than multicast transmission rate, and when being judged as YES, process proceeds to step 47, otherwise process proceeds to step 48;
Step 47, remaining 15 message clean culture in current message group are sent to current STA, process proceeds to step 49;
Step 48, remaining 15 message multicast in current message group are sent to current STA;
Step 49, judging whether message group to be sent is all sent, and when being sent, process terminates, when for being sent, obtaining next message group as current message group, the processing returns to step 42.
According to above-mentioned processing procedure, multicast message to be sent is divided into multiple message group, for each message group, n in message group message clean culture is sent to current site, send success rate by clean culture to determine whether to need to carry out the process that multicast turns clean culture, and clean culture sends the channel situation that success rate reflects current site reality, thus can dynamically determine multicast message clean culture transmission or multicast to send to current site according to the channel situation of current site reality, the transmission success rate of multicast message can be improved, improve the multicast performance under multi-user environment.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (7)
1. a multicast message sending method, is characterized in that, comprising:
According to predetermined dividing unit, the multicast message of the S of a current site described dividing unit of giving to be sent is divided into T message group, and each message group comprises the message of m described dividing unit; Wherein, dividing unit comprises: message number or message transfer time;
For current message group, the message clean culture of the n in this message group described dividing unit is sent to described current site; Wherein, S, T, m and n are natural number, and T>2, m>2, n<m;
Send success rate according to the clean culture determined and judge whether predetermined switch condition is set up, specifically comprise: the best transmission rate sending success rate determination current site according to described clean culture, judge whether described best transmission rate meets described switch condition, wherein, described switch condition comprises: best transmission rate is less than multicast transmission rate; When described switch condition is set up, all the other the message clean cultures in current message group are sent to described current site, in the invalid situation of described switch condition, all the other the message multicasts in current message group are sent to described current site.
2. method according to claim 1, is characterized in that, according to the best transmission rate of the success rate determination current site that clean culture sends, specifically comprises:
Send success rate determination clean culture transmission rate according to described clean culture, determine described best transmission rate according to described clean culture transmission rate.
3. method according to claim 1, is characterized in that, described multicast transmission rate comprises:
Fixing multicast transmission rate or dynamic multicast transmission rate.
4. a multicast message dispensing device, is characterized in that, comprising:
Division unit, for according to predetermined dividing unit, the multicast message of the S of a current site described dividing unit of giving to be sent is divided into T message group, and each message group comprises the message of the individual described dividing unit of m; Described dividing unit comprises: message number or message transfer time;
First transmitting element, for for current message group, sends to described current site by the message clean culture of the n in this message group described dividing unit; Wherein, S, T, m and n are natural number, and T>2, m>2, n<m;
For sending success rate according to the clean culture determined, judging unit, judges whether predetermined switch condition is set up; Specifically comprise:
Determination module, for sending the best transmission rate of success rate determination current site according to described clean culture;
Judge module, for judging whether the best transmission rate that described determination module is determined meets described switch condition, wherein, described switch condition comprises: best transmission rate is less than multicast transmission rate;
Second transmitting element, for when described judging unit judges that described switch condition is set up, all the other message clean cultures in current message group are sent to described current site, in the invalid situation of described switch condition, all the other the message multicasts in current message group are sent to described current site.
5. device according to claim 4, is characterized in that, described determination module, specifically for:
Send success rate determination clean culture transmission rate according to described clean culture, determine described best transmission rate according to described clean culture transmission rate.
6. device according to claim 4, is characterized in that,
Described multicast transmission rate comprises: fixing multicast transmission rate or dynamic multicast transmission rate.
7. a network equipment, is characterized in that, comprises the multicast message dispensing device according to any one of claim 4 to 6.
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| CN103079231A (en) * | 2013-02-04 | 2013-05-01 | 北京傲天动联技术股份有限公司 | Device and method for multicast-to-unicast based on wireless local area network in AP (Access Point) |
| CN106452671B (en) * | 2016-09-28 | 2020-09-18 | 青岛海尔空调电子有限公司 | Multi-connected indoor and outdoor unit communication method |
| CN107071801B (en) * | 2017-03-03 | 2020-02-04 | 上海斐讯数据通信技术有限公司 | Method and system for switching data transmission modes |
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| CN1933385A (en) * | 2006-09-30 | 2007-03-21 | 中兴通讯股份有限公司 | Method for realizing wireless local network IP group broadcasting frame thansmitting rate dynamic automatic regulation |
| CN101827306A (en) * | 2009-03-03 | 2010-09-08 | 中兴通讯股份有限公司 | Switching method and device of unicast service |
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| US7394826B2 (en) * | 2003-09-09 | 2008-07-01 | Harris Corporation | Mobile ad hoc network (MANET) providing quality-of-service (QoS) based unicast and multicast features |
| US9374231B2 (en) * | 2010-03-22 | 2016-06-21 | Alcatel Lucent | Controller providing gradual transition of multiple terminals from unicast transmission |
| CN102387140B (en) * | 2011-10-18 | 2015-01-21 | 华为技术有限公司 | Method, device and system for developing multimedia services in WLAN (wireless local area network) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1933385A (en) * | 2006-09-30 | 2007-03-21 | 中兴通讯股份有限公司 | Method for realizing wireless local network IP group broadcasting frame thansmitting rate dynamic automatic regulation |
| CN101827306A (en) * | 2009-03-03 | 2010-09-08 | 中兴通讯股份有限公司 | Switching method and device of unicast service |
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Address after: Cangshan District of Fuzhou City, Fujian province 350002 Jinshan Road No. 618 Garden State Industrial Park 19 floor Patentee after: RUIJIE NETWORKS CO., LTD. Address before: Cangshan District of Fuzhou City, Fujian province 350002 Jinshan Road No. 618 Garden State Industrial Park 19 floor Patentee before: Fujian Xingwangruijie Network Co., Ltd. |
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