CN1450744A - Media insertion control method for multimedia broadband CDMA system - Google Patents
Media insertion control method for multimedia broadband CDMA system Download PDFInfo
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- CN1450744A CN1450744A CN03108643A CN03108643A CN1450744A CN 1450744 A CN1450744 A CN 1450744A CN 03108643 A CN03108643 A CN 03108643A CN 03108643 A CN03108643 A CN 03108643A CN 1450744 A CN1450744 A CN 1450744A
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Abstract
The control method includes the following steps: dividing various services with different parameters into two kinds of services of delay high sensitivity and delay low sensitivity and to switch then into system separately for different processing; reserving sufficient resource and switching in the delay high sensitivity service as much as possible; storing all the delay low sensitivity service in buffer and transmitting those having the same or similar maximum bit error rate service in real time at the same time slot by using reserved bandwidth for delay high sensitivity service; carrying on packet transmission for the delay low sensitivity service with maximum carrier to interference ratio by utilizing the unused resource of the current delay high sensitivity service and carrying on error block judgement for the delay low sensitivity service transmitted in the same time slot with the delay high sensitivity service.
Description
Technical field
The present invention relates to a kind of applicable media access control method of multimedia broad band code division multiple access system that is applicable to.
Background technology
Along with continuous expansion and exploitation that mobile service is used, follow-on radio honeycomb communication will be multiple mixed transport with business of different performance parameter such as speech, data, video.Traditional medium access control (MAC) agreement based on speech is because its professional unicity can not adapt to following professional multifarious demand well.Therefore need a kind of new MAC agreement, so that reach the optimum utilization of system resource as much as possible when taking into account professional fairness, this had become a right basic problem of demand side in the multimedia mobile communication system already.
In 3G (Third Generation) Moblie list audio system, adopt power control that the signal power that the place, base station receives is remained on the numerical value of approximately constant usually, overcome the near-far problem that code division multiple access system is introduced.If still adopt this traditional Poewr control method of speech CDMA under the multimedia service condition, owing to the influence of multimedia service feature to the power control target, power system capacity will be subjected to having the restriction of minimum bit-error rate (BER) demand business.Like this, scheduled transmission will cause the serious waste of system resource speech and data service the time.Solution traditional closed-loop power is controlled at the restriction in the multimedia application, can be by distributing different power controlled target to realize to different business.But.This power control scheme must cause the significantly raising that realizes complexity.The grouping that the WISPER algorithm proposes to have identical with similar BER demand is placed in the same time slot to be transmitted, so just can in a time slot, continue to adopt the conventional power controlling schemes have only a power control target, be easier to realize with respect to the power control scheme of a plurality of desired values in other same time slots.Yet,, increased the complexity of computing widely, thereby its realizability is lower owing in scheduling process, introduced multiple interative computation.
Summary of the invention
At problems of the prior art, the invention provides a kind of media access method that is applicable to the multimedia bitstream division multiple access system, thereby when guaranteeing transmission quality, obtained higher throughput of system.
The media access control method that is used for the multimedia broad band code division multiple access system of the present invention comprises step:
According to the different requirements of business to time delay sensitivity, the miscellaneous service that will have different parameters is divided into time delay sensitivity height (GB) and two kinds of business of time delay sensitivity low (BE), with they respectively connecting system to wait for different processing;
The business that time delay sensitivity is high is carried out access control, and the situation that takies according to current system resource inserts this service-user as much as possible, and reserves enough resources for it;
The insensitive business of time delay is all inserted, and it is medium to be sent to put into buffer;
Be utilized as the high professional bandwidth of being reserved of time delay sensitivity, will have business of the same race that same or similar maximum bit error rate guarantees and put into same time slot and carry out real-time Transmission;
Utilize the resource and the high professional untapped resource of current time delay sensitivity that are not reserved, the business of selecting to have max carrier to interference in the low business of time delay sensitivity divides into groups to send;
For missing the piece judgement with the low business of the high professional time delay sensitivity that in same time slot, transmits of delay sensitive degree.
In the present invention, handle respectively by delineation of activities being become high business of time delay sensitivity and the low business of time delay sensitivity, not only guaranteed bandwidth for the high business of time delay sensitivity, can obtain optimum systematic function, and utilize the low grouping of transmission delay susceptibility as much as possible of the high professional unappropriated resource of time delay sensitivity, thereby realized best throughput of system.
Description of drawings
Fig. 1 shows the block diagram of realizing connection control method of the present invention;
Fig. 2 shows the comparison of the business throughput of the inventive method and existing WISPER method;
Fig. 3 shows the comparison of the mistake packet rate of the inventive method and existing WISPER method.
Embodiment
Below in conjunction with accompanying drawing connection control method of the present invention is described.
Fig. 1 shows the block diagram of realizing media access control method of the present invention.At first, the multiple business that is about to insert the multimedia broad band code division multiple access system is classified, these business have different delay parameters and error rate requirement.In the method for the invention, according to the different requirements of business to time delay sensitivity, the miscellaneous service that will have different parameters is divided into time delay sensitivity height (GB) and two kinds of business of time delay sensitivity low (BE), with they respectively connecting system to wait for different processing.
Then, the business that time delay sensitivity is high is carried out access control, the situation that takies according to current system resource inserts this service-user as much as possible, and reserves enough resources for it.And, at first insert the wherein the highest business of time delay sensitivity for the GB business, insert successively from high to low according to time delay sensitivity again.And to the enough system resource of the GB traffic assignments that inserted and the resource reservation mode when remaining to this business and leaving system.
The insensitive business of time delay is all inserted, and it is medium to be sent to put into buffer.
Be utilized as the high professional bandwidth of being reserved of time delay sensitivity, will have business of the same race that same or similar maximum bit error rate guarantees and put into same time slot and carry out real-time Transmission.
In the present invention, for the high professional institute of time delay sensitivity reserved resource has just taken a part of system resource, and the high business of time delay sensitivity might not be used all reserved resources.Therefore, the business that time delay sensitivity is low can be utilized resource and the high professional untapped reserved resource of current time delay sensitivity that is not reserved, and the business of selecting to have max carrier to interference in the low business of time delay sensitivity divides into groups to send, and sends successively according to carrier/interface ratio order from high to low then.
Low professional for time delay sensitivity, be that the user is under the situation of sky in the packet count that each time slot can send at sending time slots: guaranteeing that time delay sensitivity hangs down under the demand condition of professional QoS the largest packet number that each time slot can send.If sending time slots is not empty, it is high professional to show that then this time slot also is used for the transmission delay susceptibility, and at this moment the user in the packet count that this time slot can send is: this time slot allows the largest packet number of the GB business that sends and the difference of the GB traffic packets number that this time slot had sent already.
Miss the piece judgement for the BE business of in same time slot, transmitting with the GB business subsequently, and send wrong BE business and transmit until success again wherein detecting.And, might not need the judgement of mistake piece for the BE business that the qos parameter that divides into groups according to BE sends in empty slot.
In a preferred embodiment of the invention, to sending the time slot of GB and two kinds of business of BE simultaneously, the mistake packet rate of the GB business that sends according to this time slot miss piece to the BE business and is adjudicated.
In the method for the invention, the capacity of multimedia bitstream division multiple access system is that the largest packet number that each time slot can send is weighed by the condition in service quality (QoS) demand that guarantees different business.
In a preferred embodiment of the invention, how the high professional concrete grammar of real-time Transmission time delay sensitivity has also been described.
At first calculate the priority of every kind of specific transactions in the GB business
Here φ
β(t) expression β criticizes and is grouped in t priority constantly, and promptly next frame will be distributed to this user's number of time slot, P
β(t) expression β criticizes current group number in the grouping, F
β(t) expression β criticizes and is grouped in maximum allow to postpone the to guarantee time-to-live of current residual down, M
nThe largest packet number that can transmit simultaneously in time slot of expression user n, N
pRepresent the number of time slot in the frame.With these priority that calculate p that sorts from high to low
1, p
2P
M(p
1＞p
2＞...＞p
M), send the highest grouping of priority earlier, also have residue to send priority time high grouping again as resource, the rest may be inferred.Then, will have business of the same race that same or similar maximum bit error rate guarantees puts into same time slot and carries out real-time Transmission.
Fig. 2 of the present invention and Fig. 3 show the comparison and the comparison of packet rate by mistake of the business throughput of the inventive method and existing WISPER method respectively.From Fig. 2 and Fig. 3, as can be seen, adopt method of the present invention can improve the throughput and the mistake packet rate of code division multiple access system significantly.
Although the present invention has been described with reference to preferred embodiment, those skilled in the art can make various modifications and replacement to the present invention by reference specification embodiment and accompanying drawing, and can not deviate from the spirit and scope of the present invention.Therefore these modifications and replacement all should fall within protection scope of the present invention.
Claims (9)
1. media access control method that is used for the multimedia broad band code division multiple access system comprises step:
(1) according to the different requirements of business to time delay sensitivity, the miscellaneous service that will have a different parameters is divided into the high and time delay sensitivity of time delay sensitivity and hangs down two kinds of business, with they respectively connecting system to wait for different processing;
(2) the high business of time delay sensitivity is carried out access control, the situation that takies according to current system resource inserts this service-user as much as possible, and reserves enough resources for it;
(3) the insensitive business of time delay is all inserted, it is medium to be sent to put into buffer;
(4) be utilized as the high professional bandwidth of being reserved of time delay sensitivity, will have business of the same race that same or similar maximum bit error rate guarantees and put into same time slot and carry out real-time Transmission;
(5) utilize resource and the high professional untapped reserved resource of current time delay sensitivity that is not reserved, the business of selecting to have max carrier to interference in the low business of time delay sensitivity divides into groups to send;
(6) for missing the piece judgement with the low business of the high professional time delay sensitivity that in same time slot, transmits of time delay sensitivity.
2. according to the condition that the process of claim 1 wherein in service quality (QoS) demand that guarantees different business, the largest packet number that each time slot can send is weighed the capacity of this multimedia bitstream division multiple access system.
3. according to the process of claim 1 wherein in step (2), at first the highest business of access delay susceptibility inserts successively according to time delay sensitivity high order from high to low then.
4. according to the process of claim 1 wherein in step (2), to the enough system resource of the high traffic assignments of time delay sensitivity that inserted and the resource reservation mode when remaining to this business and leaving system.
5. according to the method for claim 1, wherein for the insensitive business of time delay, the packet count that each time slot of user can send is: if this time slot for empty, then is under the demand condition of the QoS that guarantees the insensitive business of time delay, and the largest packet number that each time slot can send; If this time slot is not empty, allow the largest packet number of the GB business that sends and the difference of the GB traffic packets number that this time slot had sent already for this time slot.
6. according to the method for claim 1, wherein in step (5), according to the high professional quantity of current time delay sensitivity in each time slot and the number of packet that every time slot can pass at most when sending this business, the high professional untapped reserved resource of definite resource that is not reserved and current time delay sensitivity, the carrier/interface ratio of the low traffic packets of calculation delay susceptibility, utilize the preferential transmission of surplus resources to have max carrier to interference user's grouping, send successively according to carrier/interface ratio order from high to low again.
7. according to the method for claim 1,, the low business of the time delay sensitivity in this time slot is missed the piece judgement according to the high professional mistake packet rate of time delay sensitivity that this time slot sends to the high professional and low professional time slot of time delay sensitivity of while transmission delay susceptibility.
8. according to after the mistake piece judgement that the process of claim 1 wherein in step (6), transmit until success again sending the low business of wrong time delay sensitivity.
9. according to the process of claim 1 wherein that the time delay sensitivity for sending according to the low qos parameter that divides into groups of time delay sensitivity is low professional in empty slot, need not the mistake piece and adjudicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03108643A CN1450744A (en) | 2003-04-02 | 2003-04-02 | Media insertion control method for multimedia broadband CDMA system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN03108643A CN1450744A (en) | 2003-04-02 | 2003-04-02 | Media insertion control method for multimedia broadband CDMA system |
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| CN1450744A true CN1450744A (en) | 2003-10-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010031356A1 (en) * | 2008-09-22 | 2010-03-25 | 华为技术有限公司 | Method, base station and communication system for resource scheduling |
| CN1997227B (en) * | 2006-06-21 | 2010-05-12 | 华为技术有限公司 | A method for processing the service independent from the uplink time delay |
| US8286002B2 (en) | 2005-12-02 | 2012-10-09 | Alcatel Lucent | Method and apparatus for providing secure remote access to enterprise networks |
| CN110719610A (en) * | 2018-07-11 | 2020-01-21 | 普天信息技术有限公司 | Method and device for seizing service resources |
| CN112702109A (en) * | 2020-12-21 | 2021-04-23 | 上海擎昆信息科技有限公司 | User equipment access method and device, and user equipment switching method and device |
-
2003
- 2003-04-02 CN CN03108643A patent/CN1450744A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8286002B2 (en) | 2005-12-02 | 2012-10-09 | Alcatel Lucent | Method and apparatus for providing secure remote access to enterprise networks |
| CN1997227B (en) * | 2006-06-21 | 2010-05-12 | 华为技术有限公司 | A method for processing the service independent from the uplink time delay |
| WO2010031356A1 (en) * | 2008-09-22 | 2010-03-25 | 华为技术有限公司 | Method, base station and communication system for resource scheduling |
| CN110719610A (en) * | 2018-07-11 | 2020-01-21 | 普天信息技术有限公司 | Method and device for seizing service resources |
| CN112702109A (en) * | 2020-12-21 | 2021-04-23 | 上海擎昆信息科技有限公司 | User equipment access method and device, and user equipment switching method and device |
| CN112702109B (en) * | 2020-12-21 | 2023-02-21 | 上海擎昆信息科技有限公司 | User equipment access method and device, and user equipment switching method and device |
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