CN101009905A - A method and device for scheduling downlink resource in the wireless communication system - Google Patents
A method and device for scheduling downlink resource in the wireless communication system Download PDFInfo
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- CN101009905A CN101009905A CNA2007100731134A CN200710073113A CN101009905A CN 101009905 A CN101009905 A CN 101009905A CN A2007100731134 A CNA2007100731134 A CN A2007100731134A CN 200710073113 A CN200710073113 A CN 200710073113A CN 101009905 A CN101009905 A CN 101009905A
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Abstract
The related down resource schedule method comprises: determining the bit rate and the limit of maximal system resource, and scheduling user down resource to let real user transmission bit rate up to the former maximal value. This invention considers both bit rate request and system fairness and stability.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of wireless communication system scheduling downlink resource technology.
Background technology
In the Release of WCDMA system 5 versions, introduced the downlink data that strengthens and passed transmission mechanism HSDPA (High Speed Downlink Packet Access, high speed downlink packet inserts).The introducing of HSDPA channel has improved the utilance of frequency spectrum, has realized descending high speed data transfer.Data service needs to do certain guarantee because it guarantees the restriction of bit rate on dispatching algorithm.
QoS (Quality of Service, service quality) guarantees to be based on single user's assurance bit rate requirement in the present agreement.Based on HSDPA shared channel characteristics, when a plurality of users carry out HSDPA communication under same base station, dispatching algorithm is adjusted dynamically to the distribution of HSDPA resource (time slot, code word etc.) between each user of system, thereby realizes the optimization of performance in the angle of system.
Stipulated in the existing protocol that radio network controller can issue GBR (Guaranteed BitRate guarantees bit rate) requirement, dispatching algorithm can guarantee the scheduling of bit rate according to this information.Concrete dispatching method is as follows:
Radio network controller issues the GBR requirement, determines each user's assurance bit rate.When carrying out scheduling downlink resource, if the system resource of distributing to this user can make the actual transmission bit rate to this user reach the assurance bit rate, think that then this user's QoS demand is met, system no longer continues this user is distributed more system resource.Otherwise,, then continue as its distributing system resource till reaching the assurance bit rate if the actual bit rate that sends does not reach the assurance bit rate.
Stipulated in the present agreement that single user guarantees the requirement of bit rate (GBR), but do not had taking into account system fairness and stable requirement, the resource that the user is consumed does not have the maximum restriction.Based on the sharing characteristic of channel and the complexity of wireless environment, when certain user is positioned at the condition of wireless environment extreme difference,, the assurance bit rate (GBR) that guarantees this user cause other quality of services for users to be guaranteed for may needing to expend huge system resource.
Summary of the invention
In view of this, the invention provides a kind of method and apparatus of wireless communication system scheduling downlink resource, be intended to solve in the prior art, when certain user is in the condition of wireless environment extreme difference, for the assurance bit rate (GBR) that guarantees this user requires and expends huge system resource, cause other quality of services for users can't guaranteed problem.
For addressing the above problem, embodiments of the invention provide a kind of method of wireless communication system scheduling downlink resource, and this method comprises:
Determine the system resource maximum that each user uses and guarantee bit rate;
Downlink resource to the user is dispatched, and makes described user's actual transmission bit rate reach described assurance bit rate or real system resource use amount reaches described system resource maximum.
Embodiments of the invention also provide a kind of device of wireless communication system scheduling downlink resource, and this device comprises:
The scheduling downlink resource module, be used for each user's downlink resource being dispatched according to the dispatching command of control module, and will offer control module with each subscriber-related downlink resource distribution condition, described downlink resource distribution condition comprises actual transmission bit rate and the real system resource use amount of base station to each user;
Control module, be used to determine to distribute to each user's system resource, make described each user's actual transmission bit rate reach described assurance bit rate or real system resource use amount reaches described system resource maximum, and dispatching command is sent to the scheduling downlink resource module according to described allocation result.
This shows that technical scheme of the present invention when considering that single user guarantees that bit rate requires, has also been considered system's fairness and stability by increasing the restriction of system resource maximum.When certain user is positioned at the condition of wireless environment extreme difference, can not expend huge system resource for the assurance bit rate that guarantees this user, cause other quality of services for users to be guaranteed.
Description of drawings
Fig. 1 is the flow chart of the inventive method;
Fig. 2 is the schematic diagram of apparatus of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1 and accompanying drawing 2 explanation the specific embodiment of the present invention.
In a kind of wireless communication system, need dispatch downlink resource, the method for this scheduling realizes by following steps:
S01: determine the system resource maximum that each user uses and guarantee bit rate;
S02: the downlink resource to the user is dispatched, and makes described user's actual transmission bit rate reach described assurance bit rate or real system resource use amount reaches described system resource maximum.
Wherein, among the step S01, system resource maximum and guarantee that bit rate can determine in pre-configured mode is promptly according to each user's user profile, for each user disposes the corresponding system resources maximum and guarantees bit rate;
System resource maximum and assurance bit rate also can be determined by the instant mode that disposes at user access network or when asking certain service, the basis of configuration remains each user's user profile, and these user profile can be to be stored in advance in the system, also can be user access networks or send to system when asking certain service
Need to prove, the definite of aforementioned system resource maximum and assurance bit rate can adopt pre-configured mode to determine, also can all adopt the mode of instant configuration to determine, can also wherein a kind ofly adopt pre-configured mode to determine, the another kind of mode of instant configuration that adopts is determined.
In addition, what deserves to be explained is that system resource maximum and assurance bit rate can be determined according to user profile, can also determine according to other information according to implementer's demand.。
Being used for determining system resource maximum and the user profile that guarantees bit rate, can be any one in User Priority, type of service, the user QoS demand, also can take all factors into consideration wherein a plurality of factors simultaneously.
Said system resource maximum can be any one in maximum transmission power, maximum scheduling time ratio, the maximum code utilization rate, also can consider the comprehensively definite system resource maximum of multinomial system parameters simultaneously.For example: can consider simultaneously transmitting power and scheduling time ratio, the system resource that is considered as taking when one of them reaches maximum reaches maximum; Perhaps the system resource that is considered as taking when both all are not less than maximum reaches maximum; Perhaps two physical parameters are weighted on average, the system resource that is considered as when reaching maximum with weighted average taking reaches maximum.
In the system resource maximum of having determined each user and after guaranteeing bit rate, can in system, store these data, we can realize this function with the data memory module 201 in accompanying drawing 2 shown devices for this reason.Data memory module 201 is used for storing the needed data of some systems, and these data are offered other modules uses.The data of described data memory module storage are not limited to said system resource maximum and guarantee bit rate.
In addition, the implementer of apparatus of the present invention also can store and upgrades data of different types with a plurality of unit that physically are separated from each other, and for example stores respectively with two unit that physically are separated from each other and update system resource maximum and guarantee bit rate.But in essence, these physically separated unit logically still belong to the data management module described in the embodiment of the present invention, implement device of the present invention in this way, should be considered as falling within the protection range of the presently claimed invention.
Need simple declaration accompanying drawing 2 described devices once at this, this device is a kind of device of wireless communication system scheduling downlink resource, can be used for realizing the method described in the embodiment of the present invention.This device comprises data memory module 201, scheduling downlink resource module 202, control module 203.Hereinafter, will be described in detail in conjunction with the execution mode of the inventive method each module this device.
After having determined the system resource maximum that each user uses and having guaranteed bit rate, system just can dispatch the downlink resource of distributing to each user, just step S02.During scheduling, system at first obtains actual amount that takies of each user and the actual bit rate that sends, the system resource maximum that can take with this user with guarantee that bit rate compares.As long as the actual amount that takies of this user reaches the system resource maximum, perhaps actual transmission bit rate has reached the assurance bit rate, and then system thinks that this user's QoS demand is met, and no longer distributes more system resource for this user.
Actual amount that takies of above-mentioned each user and the actual bit rate that sends can obtain by the contact of the message between system and the user, also can be that system obtains the grasp of channel conditions according to own.Specifically how to obtain these information, be easier to technically realize, therefore will not give unnecessary details.
In system, above-mentioned scheduling process can be mainly scheduling downlink resource module 202 and control module 203 by aforementioned scheduling downlink resource device realize.Specifically:
Scheduling downlink resource module 202 is at first obtained the downlink resource distribution condition subscriber-related with each, comprises actual transmission bit rate and the real system resource use amount of base station to each user, and these information are offered control module 203.After control module 203 is obtained these information, the system resource maximum that provides with data memory module 201 and guarantee that bit rate compares, when certain user's real system resource use amount less than its system resource maximum that should enjoy, and this user's actual transmission bit rate is not reached when guaranteeing bit rate, then control module 203 thinks that this user's QoS demand also is not met, and can continue as this user and distribute more system resource; When certain user's real system resource use amount reaches the system resource maximum, perhaps this user's actual transmission bit rate is reached when guaranteeing bit rate, control module 203 thinks that this user's QoS demand is met, and can no longer continue as this user and distribute more system resource.
After control module 203 has determined to distribute to certain user's system resource, dispatching command is sent to scheduling downlink resource module 202, scheduling downlink resource module 202 is dispatched this each user's downlink resource according to this dispatching command.
It is pointed out that the data memory module 201 in the above-mentioned embodiment is not to be necessary, control module also can obtain the system resource maximum and guarantee bit rate by other approach.For example, if system resource maximum and/or guarantee that bit rate is instant configuration, control module can directly be determined this two parameters according to relevant information.
What relate in the above execution mode is the ordinary circumstance of technical scheme of the present invention.In the scheduling downlink resource of reality, two kinds of situations also may appear, below be the detailed description to scheduling downlink resource under the both of these case:
Situation 1:
After dispatching, each user's actual transmission bit rate all reaches and guarantees that bit rate or real system resource use amount reach the system resource maximum, and promptly each user's QoS demand all is met.At this moment, control module 203 can judge whether to also have remaining system resource can supply scheduling according to the system resource allocation situation that scheduling downlink resource module 202 provides, if have, then control module 203 can indicating downlink scheduling of resource module 202, the free system resources priority scheduling is given the user who guarantees that bit rate is not met; Control module 203 also can indicating downlink scheduling of resource module 202, according to the priority of user type, preferentially system resource is dispatched to the high user of user type priority.
Situation 2:
When dispatching, the available system resource is all used, but still the actual transmission bit rate that can't guarantee each user reaches described assurance bit rate or real system resource use amount reaches described system resource maximum.At this moment, control module 203 can indicating downlink scheduling of resource module 202, preferentially system resource is dispatched to the high user of user type priority.
User type priority in above-mentioned two kinds of situations is a known parameter when carrying out scheduling downlink resource.It can be a systemic presupposition, also can be after the user is linked in the network, by system according to other parameter settings of this user.Specifically how to determine user type priority, do not belong to the related content of technical scheme of the present invention, therefore repeat no more.
By the technical scheme of being introduced in the above-mentioned execution mode, the present invention when considering that single user guarantees that bit rate requires, has also considered system's fairness and stability by increase the restriction of system resource maximum when scheduling downlink resource as can be seen.When certain user is positioned at the condition of wireless environment extreme difference, can not expend huge system resource for the assurance bit rate that guarantees this user, cause other quality of services for users to be guaranteed.
Above-mentioned execution mode also has residue and two kinds of situations of system resource less than with regard to system resource respectively, has proposed a kind of feasible system resource scheduling scheme respectively.These two schemes are also considered the priority factors of user in system when considering user QoS, thereby make system resource to distribute to each user in the system with reasonable manner.
For method and apparatus of the present invention, within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1, a kind of method of wireless communication system scheduling downlink resource is characterized in that, comprising:
Determine the system resource maximum that each user uses and guarantee bit rate;
Downlink resource to the user is dispatched, and makes described user's actual transmission bit rate reach described assurance bit rate or real system resource use amount reaches described system resource maximum.
2, the described method of claim 1 is characterized in that, the system resource maximum that described each user uses is determined by at least one in User Priority, type of service, the user QoS demand.
3, the described method of claim 1 is characterized in that, described system resource maximum restriction comprises at least one item in maximum transmit power limit, maximum scheduling time ratio restriction, the restriction of maximum code utilization rate.
4, each described method in the claim 1 to 3 is characterized in that the method for described scheduling downlink resource also comprises:
When each user's actual transmission bit rate reaches described assurance bit rate or real system resource use amount and reaches described system resource maximum, if exist free system resources can supply scheduling, preferentially free system resources is dispatched to the user who guarantees that bit rate is not met, perhaps, preferentially system resource is dispatched to the high user of user type priority according to the priority of user type.
5, each described method in the claim 1 to 3 is characterized in that the method for described scheduling downlink resource also comprises:
When system resource can not guarantee that each user's actual transmission bit rate reaches described assurance bit rate or real system resource use amount and reaches described system resource maximum, according to the priority of user type, preferentially system resource is dispatched to the high user of user type priority.
6, a kind of device of wireless communication system scheduling downlink resource is characterized in that, this device comprises:
The scheduling downlink resource module, be used for each user's downlink resource being dispatched according to the dispatching command of control module, and will offer control module with each subscriber-related downlink resource distribution condition, described downlink resource distribution condition comprises actual transmission bit rate and the real system resource use amount of base station to each user;
Control module, be used to determine to distribute to each user's system resource, make described each user's actual transmission bit rate reach described assurance bit rate or real system resource use amount reaches described system resource maximum, and dispatching command is sent to the scheduling downlink resource module according to the described system resource of distributing to each user.
7, the described device of claim 6 is characterized in that, described device also comprises data memory module, is used to store system resource maximum and the assurance bit rate that each user uses, and these data are offered control module.
8, claim 6 or 7 described devices is characterized in that, the system resource maximum that described each user uses is determined by at least one in User Priority, type of service, the user QoS demand.
9, claim 6 or 7 described devices is characterized in that, described system resource maximum restriction comprises at least one item in maximum transmit power limit, maximum scheduling time ratio restriction, the restriction of maximum code utilization rate.
10, claim 6 or 7 described devices, it is characterized in that, provide to described control module according to described scheduling downlink resource module with each subscriber-related downlink resource distribution condition, when each user's actual transmission bit rate reaches described assurance bit rate or real system resource use amount and reaches described system resource maximum, if exist free system resources can supply scheduling, then described control module is preferentially dispatched free system resources to the user who guarantees that bit rate is not met, perhaps, preferentially system resource is dispatched to the high user of user type priority according to the priority of user type.
11, claim 6 or 7 described devices, it is characterized in that, provide to described control module according to described scheduling downlink resource module with each subscriber-related downlink resource distribution condition, when system resource can not guarantee that each user's actual transmission bit rate reaches described assurance bit rate or real system resource use amount and reaches described system resource maximum, described control module is preferentially dispatched system resource to the high user of user type priority according to the priority of user type.
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| CN200710073113A CN100584075C (en) | 2007-01-24 | 2007-01-24 | A method and device for scheduling downlink resource in the wireless communication system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102164412A (en) * | 2010-02-21 | 2011-08-24 | 中兴通讯股份有限公司 | Resource scheduling method and device for guaranteed bit rate service |
| CN104981020A (en) * | 2014-04-02 | 2015-10-14 | 成都鼎桥通信技术有限公司 | Uplink GBR (Guaranteed Bit Rate) service scheduling method and base station |
| CN112866354A (en) * | 2015-12-24 | 2021-05-28 | 创新先进技术有限公司 | Resource packaging method and device and asset packaging method |
-
2007
- 2007-01-24 CN CN200710073113A patent/CN100584075C/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102164412A (en) * | 2010-02-21 | 2011-08-24 | 中兴通讯股份有限公司 | Resource scheduling method and device for guaranteed bit rate service |
| CN102164412B (en) * | 2010-02-21 | 2014-08-13 | 中兴通讯股份有限公司 | Resource scheduling method and device for guaranteed bit rate service |
| CN104981020A (en) * | 2014-04-02 | 2015-10-14 | 成都鼎桥通信技术有限公司 | Uplink GBR (Guaranteed Bit Rate) service scheduling method and base station |
| CN104981020B (en) * | 2014-04-02 | 2019-03-05 | 成都鼎桥通信技术有限公司 | The dispatching method of uplink GBR traffic and base station |
| CN112866354A (en) * | 2015-12-24 | 2021-05-28 | 创新先进技术有限公司 | Resource packaging method and device and asset packaging method |
| CN112866354B (en) * | 2015-12-24 | 2023-08-11 | 创新先进技术有限公司 | Resource packaging method and device and asset packaging method |
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| CN100584075C (en) | 2010-01-20 |
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Effective date of registration: 20211222 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |