CN103384406B - A kind of dispatching method of relay system - Google Patents
A kind of dispatching method of relay system Download PDFInfo
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- CN103384406B CN103384406B CN201210135051.6A CN201210135051A CN103384406B CN 103384406 B CN103384406 B CN 103384406B CN 201210135051 A CN201210135051 A CN 201210135051A CN 103384406 B CN103384406 B CN 103384406B
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Abstract
The invention provides a kind of dispatching method of relay system, in the method, first to needing the UE of priority scheduling to adopt the mode of centralized scheduling to dispatch, then utilize remaining resource to adopt the mode of distributed scheduling to dispatch to other UE. The present invention, by utilizing two kinds of scheduling modes to carry out two stage cooperative schedulings, can bring into play the advantage of two kinds of scheduling modes simultaneously, can reduce the signaling consumption between trunking and base station on the one hand, can have on the other hand higher resource utilization.
Description
Technical field
The present invention relates to mobile communication technology, particularly relate to a kind of dispatching method of relay system.
Background technology
In the middle of the follow-up GSM of 3G, along with user is for the increase of the demand of system bandwidth,The frequency range that GSM adopts has to, to higher frequency range development, exceed 3GHz as adoptedFrequency range etc., the now reduction of radio wave transmissions distance causes dwindling of base station range; Use simultaneouslyThe increase of family capacity makes researcher have to find and can expand on the framework basis of cellular networkThe method of network capacity, the introducing of relay has caused in the industry more and more concern gradually like this. InThe introducing continuing is relatively typically in the middle of WiMAX system, and IEEE802.16J was since system in 2006Determine the standard of junction network; In the middle of IMT-Advanced, the introducing of clear and definite relaying is that one is individual importantFeature; At present, the formulation of LTE-Advanced standard completes, and wherein also will introduce relay gramTake the defect on coverage and the capacity that LTE may exist.
In existing relay system, aspect scheduling of resource, generally there are two kinds of scheduling mode: Yi ZhongshiThe scheduling of the subscriber equipment (UE) of trunking and trunking covering is responsible in base station, is called as to concentrate and adjustsDegree mode, the mode of this centralized dispatching is by concentrated the distribution of carrying out bandwidth resources by base station, in being conducive toEffective utilization of the bandwidth resources that continue in network; Another kind is the scheduling that trunking itself is only responsible in base station,And the UE that trunking covers completes scheduled transmission by trunking, this mode is called as distributed tuneDegree, in this distributed scheduling, because the scheduling to UE that relaying covers is completed by relaying, therefore,Between relaying and base station, do not need to carry out continually the mutual of scheduling of resource control signal.
There is respectively following problem in above-mentioned two kinds of scheduling modes. Particularly, adopt distributed scheduling mode instituteThe problem existing has:
1) reduced resource utilization: after base station is relay distribution relay resource, this part resourceWhen outside relaying, resource is nervous, can not use, and in the time of the access link resource anxiety of relaying, relayingOutside resource can not be used by relaying.
2) limited scheduling of resource flexibility: trunking can only be dispatched use in certain scope of resourceFamily, has limited the flexibility that in multihop cell, resource is distributed,
The problem that adopts centralized scheduling mode to exist has:
1) Signalling exchange is frequent, and signaling time delay is difficult to ensure: because needs are dispatched letter by relay forwardingOrder, the therefore real-time of the feedback information of schedule information, CQI feedback information and ACK/NACK messageBe difficult to ensure.
2) signaling consumption is larger, affects systematic function: in the time that repeated link resource is comparatively nervous, and schedulingThe transport overhead of signaling will affect the performance of whole system.
The frequency band taking along with wireless communication system increases greatly, and the mode of identical networking will become main flow.Base station covering scene will be more complicated. The independent side that adopts distributed resource scheduling and centralized resources schedulingMethod all can cannot obtain optimal scheduling effect because of above-mentioned deficiency in comparatively complicated covering scene.
A kind of signaling consumption both having had between less trunking and base station, tool again are not yet proposed at presentThere is the dispatching method of higher resource utilization, to adapt to covering scene complicated in practical application.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of dispatching method of relay system, the partyMethod is few to the signaling consumption between trunking and base station, and has higher resource utilization.
In order to achieve the above object, the technical scheme that the present invention proposes is:
A dispatching method for relay system, the method comprises the following steps:
A, each relaying obtain it and cover the link information of user equipment (UE), determines the current priority scheduling that needsUE, according to the bandwidth resources of the described UE needs that need priority scheduling of described link information estimation and described in inciting somebody to actionEstimated result reports base station;
The described estimated result that b, base station report according to current all relayings, to the described UE that needs priority schedulingCarry out centralized scheduling, utilize the not idling-resource for centralized scheduling, for each described relay distribution is used forThe bandwidth of distributed scheduling, by determined described centralized scheduling bandwidth information and described for distributed tuneThe bandwidth information of degree is notified to corresponding described relaying;
C, described relaying, according to the determined bandwidth information of described centralized scheduling, are preferentially adjusted described needsThe UE of degree dispatches, and utilizes the described bandwidth for distributed scheduling of described base station assigns, to working asBefore do not carry out centralized dispatching UE carry out distributed scheduling.
In sum, the dispatching method of relay system that the present invention proposes, first to needing priority schedulingUE adopts the mode of centralized scheduling to dispatch, and then adopts distributed scheduling for other UEMode is dispatched, and so, by utilizing two kinds of scheduling modes to carry out two stage cooperative schedulings, can send out simultaneouslyWave the advantage of two kinds of scheduling modes, few to the signaling consumption between trunking and base station on the one hand, anotherCan there is higher resource utilization on the one hand.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing and concreteThe present invention is described in further detail for embodiment.
Core concept of the present invention is: point two stages dispatch, and at first stage, adopts and concentratesThe mode of formula scheduling, carries out pre-scheduling to the user who needs priority scheduling, at second stage, adopts and dividesThe mode of cloth formula scheduling, does not have the user of pre-scheduling to dispatch to other. Like this, on the one hand, canBy the mode of centralized scheduling guarantee to satisfy the demand priority scheduling user's needs, improve resource utilization,On the other hand, can be by adopting the mode of distributed scheduling to reduce trunking and base to a part of UEBetween standing, scheduling of resource control signal is mutual, thereby can realize the collaborative work of two kinds of source scheduling modesDo, give full play to the advantage of two kinds of source scheduling modes.
Fig. 1 is the method flow schematic diagram of the embodiment of the present invention one, and as shown in Figure 1, the method is mainly wrappedDraw together:
Step 101, each relaying obtain the link information of its covering user equipment (UE), determine that current needs are preferentialThe UE of scheduling, according to the bandwidth resources of the described UE needs that need priority scheduling of described link information estimation alsoDescribed estimated result is reported to base station.
Here can determine the current UE that needs priority scheduling according to the scheduling strategy of system, according to one,Fixed policy selection class UE, as the UE of priority scheduling, particularly, can adopt following three kinds of methods realExisting:
Method one: can determine according to user's position. Particularly, can will use according to the position at user placeFamily is divided into central user group and edge customer group, according to the scheduling strategy of practical application scene and systemic presupposition,Using the UE in central user group or edge customer group as the current UE that needs priority scheduling.
Method two: determine according to service priority. Particularly, can user be divided into according to service priorityMultiple priority level groups such as high-priority users group, low priority user group. According to practical application scene andUE in one or more tier group of scheduling strategy adaptive determining of systemic presupposition is as current needsThe UE of priority scheduling.
Method three: determine according to User Priority. Particularly, can user be divided into according to User PriorityMultiple user gradation groups such as Gold Subscriber group, Silver Subscriber group, Bronze Subscriber. According to practical application scene andUE in one or more user gradation groups of the scheduling strategy adaptive determining of systemic presupposition is as currentNeed the UE of priority scheduling.
Above-mentioned only having listed severally preferably determine and need the methods of priority scheduling UE, in actual applications notBe limited to this, as long as meet the scheduling strategy of system.
In this step, by trunking, the UE that needs priority scheduling is carried out to pre-scheduling, can further pressScheduling control signaling overhead between contracting trunking and base station (DeNB).
The described estimated result that step 102, base station report according to current all relayings, preferentially adjusts described needsThe UE of degree carries out centralized scheduling, utilizes the not idling-resource for centralized scheduling, for each described relaying dividesBe used in the bandwidth of distributed scheduling, by determined described centralized scheduling bandwidth information and described for dividingThe bandwidth information of cloth formula scheduling is notified to corresponding described relaying.
Here, described estimated result that base station reports according to current all relayings, to the described priority scheduling that needsUE carries out centralized scheduling, i.e. the mode of base station employing centralized scheduling is to need the UE of priority scheduling to distributeCorresponding Un mouth resource. Like this, by a part of UE is adopted to centralized scheduling, can utilize centralizedScheduling improves the resource utilization of system, has overcome the low problem of simple distributed resource scheduling utilization rate.
Particularly, in this step, base station can adopt the mode such as static allocation or dynamic assignment to realize for distributedThe distribution of the bandwidth of scheduling, preferably, can adopt following three kinds of methods:
Method one: static allocation, at RN1, static fixed allocation Un port band width money between RN2......RNxSource. , described base station, according to the Un port band width resource distribution size of default each described relaying, is not usedIn the idling-resource of centralized scheduling, for each described relay distribution is for the bandwidth of distributed scheduling.
Method two: dynamic assignment, at RN1, between RN2......RNx, according to the bandwidth application of each relaying,Dynamic assignment Un port band width resource. , described base station is according to the Un port band width of the current application of each described relayingResource size, utilizes the not idling-resource for centralized scheduling, for each described relay distribution is for distributedThe bandwidth of scheduling.
Method three, described base station are according to the priority of UE that each described relaying covers and the current Shen of each described relayingUn port band width resource size please, utilizes the not idling-resource for centralized scheduling, for each described relaying dividesBe used in the bandwidth of distributed scheduling. Can be specifically: the different user covering according to RN, centering is gone onRow grouping, different groupings gives different business weights, and for example, top-tier customer grouping gives the highest industryBusiness weight, arranges limit priority. When dispatch base station, preferentially ensure the Un of schedules high priority relayingPort band width, in the situation that meeting high priority bandwidth, then according to the Un port band width application of different relayings, pressesEquitable proportion strategy distributes the remaining Un bandwidth resources of eating dishes without rice or wine.
Step 103, described relaying are according to the determined bandwidth information of described centralized scheduling, excellent to described needsFirst the UE of scheduling dispatches, and utilizes the described bandwidth for distributed scheduling of described base station assigns, to working asBefore do not carry out centralized dispatching UE carry out distributed scheduling.
In this step, by a part of UE is adopted to distributed scheduling, can reduce trunking and DeNBBetween scheduling control signaling mutual, reduce scheduling controlling expense, reduce scheduling control information mutual simultaneouslyTime delay, has overcome simple set Chinese style scheduling of resource time delay and has been difficult to ensure, the mutual frequent and letter of scheduling control signalingMake the large problem of expense.
Here, relaying is to the described concrete grammar that needs the UE of priority scheduling to dispatch, and to currentThe UE that carries out centralized dispatching carries out distributed scheduling. Same existing system, does not repeat them here.
Accuracy, the distribution of optimizing resource, the raising resource profit of preferably, dispatching in order to strengthen the present inventionBy rate, before the UE that needs priority scheduling is dispatched, the shape that relaying can also be first current according to UEState determines whether the link information of current UE changes, if changed, needs according to current newLink information reschedule, the inaccuracy causing to overcome centralized scheduling. Above-mentioned in order to realizeObject, relaying described in this step is according to the determined bandwidth information of described centralized scheduling, to described needsBefore dispatching, the UE of priority scheduling also to further comprise:
If there is variation in the current Radio Link that monitors the described UE that needs priority scheduling of described relayingAnd reach default modulating-coding speed conversion condition or be switched to other communities, described relaying profitAgain this UE is dispatched by the bandwidth of current described base station assigns.
Here, relaying, judging need to reschedule time, utilizes the bandwidth of current described base station assigns againThis UE is rescheduled, and the concrete mode rescheduling can be selected flexibly, can be to utilize institute to distributeCentralized resources dispatch, also can utilize distributed distributed resource to dispatch.
Can find out from technique scheme, the present invention is by taking to utilize centralized scheduling and distributed tuneDegree, in the mode of two stage cooperative schedulings, can be given full play to the advantage of two kinds of scheduling modes, realizes excellentBad complementation, has improved the flexibility of scheduling, thereby more can be adapted to covering scene complicated in practical application.
In sum, these are only preferred embodiment of the present invention, be not intended to limit of the present inventionProtection domain. Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, changeEnter etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a dispatching method for relay system, is characterized in that, the method comprises the following steps:
A, each relaying obtain it and cover the link information of user equipment (UE), determines the current priority scheduling that needsUE, according to the bandwidth resources of the described UE needs that need priority scheduling of described link information estimation and described in inciting somebody to actionEstimated result reports base station;
The described estimated result that b, base station report according to current all relayings, to the described UE that needs priority schedulingCarry out centralized scheduling, utilize the not idling-resource for centralized scheduling, for each described relay distribution is used forThe bandwidth of distributed scheduling, by determined described centralized scheduling bandwidth information and described for distributed tuneThe bandwidth information of degree is notified to corresponding described relaying;
C, described relaying are according to the determined bandwidth information of described centralized scheduling, to the described priority scheduling that needsUE dispatch, utilize the described bandwidth for distributed scheduling of described base station assigns, to current do not enterThe UE of row centralized dispatching carries out distributed scheduling;
Wherein, before the described UE that needs priority scheduling is dispatched, if the current monitoring of described relayingThere is to change and reach default modulating-coding speed to the Radio Link of the described UE that needs priority schedulingConversion condition or be switched to other communities, described relaying utilizes the bandwidth of current described base station assignsAgain this UE is dispatched.
2. method according to claim 1, is characterized in that, base station described in step b is according to defaultThe Un port band width resource distribution size of each described relaying, utilize the not idling-resource for centralized scheduling,For each described relay distribution is for the bandwidth of distributed scheduling.
3. method according to claim 1, is characterized in that, base station described in step b is according to each instituteState the Un port band width resource size of the current application of relaying, utilize the not idling-resource for centralized scheduling, forEach described relay distribution is for the bandwidth of distributed scheduling.
4. method according to claim 1, is characterized in that, base station described in step b is according to each instituteState the priority of UE that relaying covers and the Un port band width resource size of the current application of each described relaying, utilizeNot for the idling-resource of centralized scheduling, for each described relay distribution is for the bandwidth of distributed scheduling.
5. method according to claim 1, is characterized in that, described definite current priority scheduling that needsUE be:
According to default scheduling strategy, by the central user of community or edge customer, be defined as current needs preferentialThe UE of scheduling.
6. method according to claim 1, is characterized in that, described definite current priority scheduling that needsUE be:
According to default scheduling strategy, according to the service priority of UE, determine the current priority scheduling that needsUE。
7. method according to claim 1, is characterized in that, described definite current priority scheduling that needsUE be:
According to default scheduling strategy, according to the User Priority of UE, determine the current priority scheduling that needsUE。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016150525A1 (en) * | 2015-03-25 | 2016-09-29 | Sony Mobile Communications Inc. | Scheduling in cellular networks |
| JP6616009B2 (en) * | 2015-12-31 | 2019-12-04 | 華為技術有限公司 | Data transmission method and apparatus |
| CN107295646B (en) * | 2016-03-31 | 2021-08-31 | 华为技术有限公司 | Resource allocation method and network equipment |
| CN108923848B (en) | 2018-06-22 | 2020-11-10 | 武汉光迅科技股份有限公司 | Site selection method of monitoring station and site selection device for monitoring station |
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