CN101106501A - A dynamic bandwidth adjustment method in broadband access system - Google Patents
A dynamic bandwidth adjustment method in broadband access system Download PDFInfo
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Abstract
The invention discloses a method of dynamic bandwidth adjustment in bandwidth access system, which includes the following steps: the bandwidth access equipment is allocated and stored with business information; the bandwidth access equipment monitors and identifies the business information of users' choice in the data packet dispatched; according to the identified business information, the bandwidth access information increases or releases the bandwidth of corresponding users. The invention reduces the update and storage steps of resources reservation soft state, with easier realization. At the same time, the dynamic bandwidth distribution method adopted by the invention can meet the dynamic requirements of users random usage, distribute system bandwidth reasonably to the maximum degree and guarantee the experience quality and service quality of the business used by users.
Description
Technical field
The present invention relates to the broadband access equipment field, dynamic bandwidth adjustment method in especially a kind of broadband access system.
Background technology
At present, user's business of networking develops into the application based on video and audio frequency technology applications such as blog, video monitoring, video request program, time-moving television program request gradually from the application of traditional browsing page.Especially in recent years, appearance along with Web TV integrated service business such as (IPTV), the user sharply increases the demand of bandwidth, and demand and user to bandwidth use professional mode and time correlation, it is to satisfy the user dynamic need of bandwidth is adjusted timely and to be responded that these factors all need broadband access system, satisfies the requirement of user to the business experience quality.
Usually, broadband access system is by broadband modem (MODEM, MOdulatorDEModulato), Digital Subscriber Line modulation multiplex device (DSLAM, Digital Subscriber Line AccessMultiplexer), Broadband Remote Access Server (BRAS, Broadband Remote Access Server) and router (ROUTER) constitute.As shown in Figure 1.The bandwidth that provides for the user by broadband access system satisfies the demand of user to bandwidth.
In present broadband access system, allocated bandwidth mainly adopts the mode of the static configuration of customer-centric.By the network equipment maintenance personnel by router the required bandwidth static configuration of user to the circuit at user place.This method realizes simply, but owing to being the method that adopts the static allocation bandwidth, the service efficiency of bandwidth is lower on the one hand, on the one hand owing to the randomness of customer service selection, can't satisfy the dynamic need of user bandwidth in addition.
RSVP (the RSVP that uses on the internet in addition, Resource ReSerVationProtocol) because agreement realizes complicated, and be to rely on routing table, make to be difficult to meet the demands for the such two-layer equipment that does not have routing table of MODEM, DSLAM.RSVP is based on signaling protocol end to end in addition, need by way of each transit node all to be reserved with resource soft state information to each stream, and need carry out periodic refreshing, thereby cause storage overhead and communication overhead these information.At last, because the scalability problem of RSVP itself also causes the compatible difference of different manufacturers for agreement, thereby makes the autgmentability of whole system be restricted.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of dynamic bandwidth adjustment method in the broadband access system that satisfies user's dynamic need.
For achieving the above object, technical scheme of the present invention is achieved in that
Dynamic bandwidth adjustment method in a kind of broadband access system said method comprising the steps of:
A, configuration service information and storage in broadband access equipment;
The business information that each user selects is monitored and discerned to B, broadband access equipment in the packet of its transmitting-receiving;
C, according to the business information of step B identification, broadband access equipment increases or discharges the bandwidth of relative users.
Described steps A further comprises, configure user information in broadband access equipment.
User profile includes but not limited to described in the steps A, and the bandwidth of user's minimum bandwidth, user's maximum bandwidth, protocol type, protocol type correspondence is adjusted granularity and user's priority.
Business information includes but not limited to, Network type, professional shared bandwidth and business datum package informatin.
Described step C comprises:
The bandwidth adjustment information type that C1, the described packet of judgement comprise if increase bandwidth information, then enters step C2, if reduce bandwidth information, then enters C3;
C2, calculate user's current residual bandwidth, whether judge corresponding professional required bandwidth greater than user's remaining bandwidth, if, user bandwidth is adjusted to maximum, if not, user bandwidth is increased the required bandwidth of described business;
C3, user bandwidth reduced the required bandwidth of described business.
Described broadband access equipment is: modulator-demodulator or Digital Subscriber Line modulation multiplex device or Broadband Remote Access Server or router or convergence switch or access switch.
Described business datum package informatin is the information of sign different business.
The present invention has the following advantages:
1) the method for the invention is according to carrying out allocated bandwidth to the dynamic snoop results of user-selected business, owing to be not resource distribution mode end to end, reduced the renewal and the storing step of resource reservation soft state information, realizes simpler.
2) distribution method of dynamic bandwidth of the present invention's employing can satisfy the dynamic need that the user uses at random, and rational to greatest extent distribution system bandwidth guarantees that the user uses professional Quality of experience and service quality.
Description of drawings
Fig. 1 is that the broadband access system of prior art constitutes schematic diagram;
Fig. 2 is a specific embodiment networking schematic diagram of the present invention;
Fig. 3 is that bandwidth of the present invention is adjusted flow chart.
Embodiment
Basic thought of the present invention is, with the business information static configuration in broadband access equipment, when the user uses, bandwidth according to its selected service needed, adjust the actual occupied bandwidth of user, if in broadband access equipment, disposed user profile, so, when bandwidth is adjusted, in the bandwidth range that the user had, dynamic-configuration user's actual bandwidth is after user-selected service ending, when perhaps the user is idle, discharge the bandwidth that it occupies, make the bandwidth availability ratio of user and whole network improve, and user's self Quality of experience is guaranteed.
Described user profile includes but not limited to: the bandwidth of user's minimum bandwidth, user's maximum bandwidth, protocol type, protocol type correspondence is adjusted granularity, user's priority etc.; Business information includes but not limited to, Network type, professional shared bandwidth, business datum package informatin.These user profile and business information are stored in the broadband access equipment, and described broadband access equipment comprises: modulator-demodulator, Digital Subscriber Line modulation multiplex device, Broadband Remote Access Server, router, convergence switch, access switch etc. carry out the equipment of Bandwidth Management control.Described business data packet information comprises: IP address, port numbers, transmission control protocol (TCP, Transmission Control Protocol) header packet information, User Datagram Protoco (UDP) (UDP, User DatagramProtocol) header packet information, virtual network address, medium access control (MAC, Media Access Control) address, source MAC, protocol type etc. can be discerned the information of different business.
As shown in Figure 2, two streaming media services that the user uses the streaming media server group to provide by broadband access system in certain family.Dynamic bandwidth distribution process to this domestic consumer is: when having only a user 1 to use, the required altogether bandwidth of this family is A; When user 2 also wanted to watch flow-medium performance, the required altogether bandwidth of this family was 2A; After user 1 finished to watch, required bandwidth became A again, and user 2 is when also finishing to watch, and required bandwidth is 0.
In order to further specify basic thought of the present invention, with the DSLAM equipment among Fig. 2 is example: user place circuit is VLAN (VLAN, Virtual Local Area Network) permanent virtual circuit (PVC in, Permanent Virtual Circuit), it has unique MAC Address, the spendable total amount of bandwidth MAX of user is 8M, media server IP address is 220.1.1.2, RTSP protocol port address is 554, medium type satisfies the standardized industry (ISMA of group of multimedia technology, the bandwidth demand of Profile3 standard Internet StreamingMedia Alliance) is 3.7M, during to dynamic adjustment bandwidth, this bandwidth demand is bandwidth and adjusts granularity; Signaling protocol between user and the Streaming Media adopts real time streaming transport protocol (RTSP, Real Time Streaming Protocol).RTSP is a text based agreement, is used for setting up between client and server end and consulting to fail to be convened for lack of a quorum in real time words, and this agreement provides an extensible framework, makes controlled, the program request of real time data (as audio ﹠ video) become possibility.The user is by the DESCRIBE of RTSP, SETUP, and protocol type such as PLAY and TEARDOWN and media server carry out alternately, finish Media Stream watched forward-reverse, and shutoff operation.
In the broadband access system shown in Figure 2, the user select a kind of bandwidth demand be 3.7M media business the Bandwidth Dynamic set-up procedure as shown in Figure 3:
Step 1: configuration service information on DSLAM, business information is herein: the IP address 220.1.1.2 of media server, medium bandwidth demand 3.7M, RTSP protocol port numbers 554, DSLAM is behind the IP address that listens to media server and protocol port number, the granularity of corresponding bandwidth adjustment and mode are, if protocol type is SETUP, for the user increases bandwidth 3.7M,, discharge user bandwidth 3.7M if protocol type is TEARDOWN; Above information all need be stored among the DSLAM; Simultaneously, storage user's the spendable total amount of bandwidth 8M of MAC Address, user on DSLAM;
Step 2: after configuration is finished, the packet information that flows through on the circuit of DSLAM monitoring users place, search out the RTSP agreement of the IP address 220.1.1.2 of media server and RTSP protocol port numbers 554 after, enter step 3;
Step 3: judge that this protocol type is SETUP or TEARDOWN; If protocol type is SETUP, enter step 4; If protocol type is TEARDOWN, enter step 7;
Step 4: calculate user's current residual bandwidth, judge that whether user's remaining bandwidth satisfies the increase granularity, if do not satisfy, enters step 5; If satisfy, enter step 6;
Step 5: directly user bandwidth is adjusted to maximum 8M, enters step 8;
Step 6: adjust granularity according to the bandwidth in the user profile, user's utilized bandwidth is upwards increased 3.7M, enter step 8;
Step 7: adjust granularity according to the bandwidth in the user profile, user's utilized bandwidth is reduced 3.7M downwards, enter step 8;
Step 8: finish, finish bandwidth adjustment process one time.
More than be that a broadband access equipment changes customer service, a dynamic bandwidth distribution process to the user, each broadband access equipment connects some users down, and each user can customize multiple business, in step 1, according to the load capacity of each broadband access equipment, dispose the number of users and the corresponding business information of its support.Share for a plurality of users under the situation of a bandwidth, set each user's priority simultaneously, when a plurality of users ask to increase simultaneously, under the same situation of priority, mode according to First come first served is distributed bandwidth, and when surpassing the scope of total bandwidth, follow-up request will can not be performed, up to the bandwidth that user's release busy is arranged, continue again to carry out.
Equipment in the present most broadband access system is all supported monitor function, even the equipment that wouldn't support at present, because the present invention realizes simply, also can satisfy the requirement that Bandwidth Dynamic is adjusted by appropriate reconstruction to relevant device, utilize the whole network bandwidth to greatest extent, and satisfied user's dynamic need and business experience quality to bandwidth under use high bandwidth professional qualification.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (7)
1. dynamic bandwidth adjustment method in the broadband access system is characterized in that, said method comprising the steps of:
A, configuration service information and storage in broadband access equipment;
The business information that each user selects is monitored and discerned to B, broadband access equipment in the packet of its transmitting-receiving;
C, according to the business information of step B identification, broadband access equipment increases or discharges the bandwidth of relative users.
2. dynamic bandwidth adjustment method in the broadband access system according to claim 1 is characterized in that, described steps A further comprises, configure user information in broadband access equipment.
3. dynamic bandwidth adjustment method in the broadband access system according to claim 2, it is characterized in that, user profile includes but not limited to described in the steps A, and the bandwidth of user's minimum bandwidth, user's maximum bandwidth, protocol type, protocol type correspondence is adjusted granularity and user's priority.
4. dynamic bandwidth adjustment method in the broadband access system according to claim 1 is characterized in that, business information includes but not limited to, Network type, professional shared bandwidth and business datum package informatin.
5. dynamic bandwidth adjustment method in the broadband access system according to claim 1 is characterized in that, described step C comprises:
The bandwidth adjustment information type that C1, the described packet of judgement comprise if increase bandwidth information, then enters step C2, if reduce bandwidth information, then enters C3;
C2, calculate user's current residual bandwidth, whether judge corresponding professional required bandwidth greater than user's remaining bandwidth, if, user bandwidth is adjusted to maximum, if not, user bandwidth is increased the required bandwidth of described business;
C3, user bandwidth reduced the required bandwidth of described business.
6. according to dynamic bandwidth adjustment method in the described broadband access system of claim 1 to 5, it is characterized in that described broadband access equipment is: modulator-demodulator or Digital Subscriber Line modulation multiplex device or Broadband Remote Access Server or router or convergence switch or access switch.
7. dynamic bandwidth adjustment method in the broadband access system according to claim 4 is characterized in that, described business datum package informatin is the information of sign different business.
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| CNB2007101180340A CN100502338C (en) | 2007-06-27 | 2007-06-27 | A dynamic bandwidth adjustment method in broadband access system |
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- 2007-06-27 CN CNB2007101180340A patent/CN100502338C/en not_active Ceased
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