CN1808951A - Channel priority queuing method in multi-carrier communication system - Google Patents
Channel priority queuing method in multi-carrier communication system Download PDFInfo
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Abstract
This invention discloses one multi-load wave communication system channel priority lining method, which comprises the following steps: a, when user sends signal channel requirement, the system gets the user resource demands from the said demands; b, the system finds out the load wave to satisfy the user demands as prepare load wave and selects load wave with maximum priority from the prepare ones; c, selecting the time gap with maximum priority from the load wave and redispatching relative codes materials according code dispatching principle to determine the business signal value.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of channel priority queuing strategy, and be a kind of channel priority queuing strategy that is applicable to multi-carrier communications systems.
Background technology
In existing communication system, when the user proposes call request, need to give described user's allocated channel, so that user and network side communicate.If when having a plurality of channels to select for distribution, system just need sort to determine the priority of each channel according to some rule to these channels, final system selects the highest channel allocation of priority to the user, so that the user can insert a good channel, and then improve the system calling success rate and reduce system's cutting off rate.
With TDD/CDMA (time division duplex/code division multiple access) communication system is example, at present only the channel of carrier wave communication system is carried out priority queueing, it mainly may further comprise the steps (seeing also Fig. 1): at first: each time slot to single carrier is ranked according to load measurement or idling-resource information, obtains the time slot priority (step S110) of each time slot; Then, in the high time slot of priority, distribute corresponding sign indicating number resource, determine the employed channel of described user (step S120) thus according to the sign indicating number distribution principle.
System is usually according to user's business demand situation, judge whether to stride time slot and arrange resource, if then select some time slots according to priority orders, otherwise can in the highest time slot of priority, distribute corresponding sign indicating number resource, determine the employed channel of described user thus according to the sign indicating number distribution principle.
Along with the growth of number of users, when increasing the wireless traffic density that produces, user speech and data surpass single-carrier cell when the following capacity density that can provide of prerequisite that covers is provided, and the use multicarrier just becomes a kind of effective cell capacity-enlarging approach.But, a kind of channel priority queuing strategy at multi-carrier communications systems is not proposed in the prior art.
Summary of the invention
The object of the present invention is to provide a kind of channel priority queuing strategy, so that improve the call successful rate and the handover success rate of system in multi-carrier communications systems at multi-carrier communications systems.
For addressing the above problem, the invention discloses the channel priority queuing strategy of first kind of multi-carrier communications systems, comprising: (1) when the user initiated channel request, system obtained described user's resource requirement from described request; (2) system from all carrier waves, find out satisfy described user resource request carrier wave as candidate carrier, and from described candidate carrier, select the highest carrier wave of priority; (3) from the highest carrier wave of described priority, select the high time slot of priority, in described time slot, distribute corresponding sign indicating number resource, determine the channel that described user uses thus according to the sign indicating number distribution principle.
The step of above-mentioned first method (2) also comprises: when system does not find the carrier wave that satisfies user resource request, then select the upstream or downstream folk prescription to the carrier wave that satisfies user resource request as candidate carrier, and from described candidate carrier, select the highest carrier wave of priority; Described carrier wave is implement resource integration on other direction.
Above-mentioned carrier wave priority is determined according to following steps: the privileged direction of determining carrier wave according to user performance characteristic or Internet resources feature, wherein when determining the privileged direction of carrier wave with user performance characteristic, the direction that traffic carrying capacity is many in the uplink and downlink traffic carrying capacity is a privileged direction, when determining the privileged direction of carrier wave with the Internet resources feature, resource-constrained direction is a privileged direction in the uplink and downlink resource; Determine the priority of carrier wave according to the prioritization criteria on the privileged direction, thereby find the highest carrier wave of priority.
In addition, the prioritization criteria on the privileged direction is that power resource carrier wave priority many more, that the more little or basic radio-cell BRU number of resources of interference is many more are high more on the privileged direction.
Prioritization criteria on the privileged direction can also be big more for the measurement index S of the carrier wave on the priority direction, the priority of carrier wave is high more, wherein, the measurement index S of carrier wave obtains in the following manner: the measurement index S that obtains each carrier wave according to S=Q1*M1+Q1/M2+Q3*M3, wherein, Q1, Q2 and Q3 are predefined privileged direction power resource, interference and the BRU resource consideration proportion in carrier wave priority, M1 is the priority direction power number of carrier wave, M2 is the interference coefficient of carrier wave, and M3 is the BRU number of resources of carrier wave.
Described time slot priority sorts by time slot load balancing principle, and the priority of the time slot that remaining BRU resource is maximum is the highest, or described time slot priority is that interference according to time slot is that principle sorts, and disturbs minimum its priority of time slot the highest.
Step (3) is specially: (a1) judges whether to stride time slot and arranges resource, if, then select the corresponding number time slot according to priority orders, and the user that will the resource allocation of the corresponding sign indicating number of described each time slot extremely will insert, otherwise carry out step (a2); (a2) judge whether the limit priority time slot can meet user's request, if the resource allocation of the corresponding sign indicating number of this time slot is to the user that will insert, otherwise after described time slot implement resource integration, again with the corresponding sign indicating number resource allocation of this time slot to the user that will insert.
Distribute corresponding sign indicating number resource to comprise in described time slot: the priority to channel code in described time slot is ranked, and described channel code priority is to determine according to spreading factor, and the priority of the more little channel code of spreading factor is high more; Distribute the high channel code of priority to give described user according to compact principle.
The present invention also provides the channel priority queuing strategy of second kind of multi-carrier communications systems, comprising: (1) when the user initiated channel request, system obtained described user's resource requirement from described request; (2) system's time slot of selecting respectively to satisfy user resource request by up direction and down direction is as up candidate's time slot and descending candidate's time slot, and definite privileged direction; (3) from privileged direction candidate time slot, select the high time slot of priority, in described time slot, distribute corresponding sign indicating number resource, determine the channel that described customer service is used thus according to the sign indicating number distribution principle.
The step of above-mentioned second method (3) also comprises: m1: whether the resource of judging the other direction of the time slot place carrier wave that priority is high on the privileged direction satisfies user resource request, if, directly in described time slot, distribute corresponding sign indicating number resource to give described user according to the sign indicating number distribution principle, otherwise, carry out step m2; M2: in described time slot, carry out resource consolidation earlier, in described time slot, distribute corresponding sign indicating number resource then, determine the channel of described user's business use thus according to the sign indicating number distribution principle.
Above-mentioned time slot is meant to be determined jointly by carrier number and timeslot number.And described time slot priority is to sort by time slot load balancing principle, and the priority of the time slot that remaining BRU resource is maximum is the highest, or described time slot priority is that interference according to time slot is that principle sorts, and disturbs minimum its priority of time slot the highest.
In described time slot, distribute corresponding sign indicating number resource to comprise: in the highest carrier wave of priority and time slot, the priority of channel code to be ranked, described channel code priority determines that according to spreading factor the priority of the more little channel code of spreading factor is high more; Distribute the high channel code of priority to give described user according to compact principle.
Wherein, the step of second method (2) also comprises: when system does not find the time slot that satisfies user resource request, earlier described time slot is implement resource integration.
Compared with prior art, the present invention has the following advantages: the present invention has made full use of the characteristics of multi-carrier-wave TDD/CDMA mobile communication system, solved the problem of multi-carrier-wave TDD/cdma system about the channel priority queuing, make that the channel priority queuing strategy in the system is reasonable and effective, help obtaining higher system and insert success rate and handover success rate, help the user simultaneously and obtain less access delay, thereby improved the whole system combination property.
Description of drawings
Fig. 1 is the flow chart that the channel of carrier wave communication system carries out priority queueing.
Fig. 2 is the flow chart that the channel of multi-carrier communications systems carries out a kind of method of priority queueing;
Fig. 3 is the flow chart that the channel of multi-carrier communications systems carries out priority queueing first embodiment;
Fig. 4 is the flow chart that the channel of multi-carrier communications systems carries out priority queueing another kind method;
Fig. 5 is the flow chart that the channel of multi-carrier communications systems carries out priority queueing second embodiment.
Embodiment
Below in conjunction with accompanying drawing, specify the present invention.
The present invention mainly proposes to be fit to the channel priority queuing strategy of multi-carrier communications systems.For multi-carrier communications systems, because increase the deterministic process of carrier resource priority when the user inserts, the priority queueing of described channel must be considered from carrier wave priority and time slot priority two-stage resource hierarchy, has improved the difficulty of channel priority queuing in the multi-carrier communications systems thus.Usually, system needs also to guarantee that the up-downgoing channel of distributing to same user is in the same carrier wave.
With the TDD/CDMA cell mobile communication systems is example, and network side is set up with user terminal by some carrier waves and communicated by letter.In each frame of each carrier wave, comprise a plurality of time slots, in the middle of each time slot, divide some code channels with spreading code.And one " carrier wave+time slot+code channel " is combined into a TDD/CDMA system channel.Furtherly, code channel as a spreading factor SF=16 of TD-SCDMA system definition is a basic Resource Unit (BRU), then allow the maximum BRU number that exists number of resources according to related standards in time slot, and the total sum of resource of all time slots is the number of resources of this carrier wave in carrier wave for this time slot.
See also Fig. 2, it is the schematic flow sheet of the channel priority queuing strategy of a kind of multi-carrier communications systems of the present invention.It may further comprise the steps: at first when the user initiated channel request, system obtained described user's resource requirement (step S210) from described request; Then, system in all carrier waves, find out satisfy described user resource request carrier wave as candidate carrier, and therefrom select the highest carrier wave of priority (step S220); At last, the high time slot of priority is selected by system from described carrier wave, distributes corresponding sign indicating number resource according to the sign indicating number distribution principle in described time slot, determines the channel (step S230) that described user uses thus.
Described carrier wave priority can be determined according to following steps:
(1) determines the privileged direction of carrier wave according to user performance characteristic or Internet resources feature.When determining privileged direction with user performance characteristic, the direction that traffic carrying capacity is many in the uplink and downlink traffic carrying capacity is a privileged direction, and when determining the privileged direction of carrier wave with the Internet resources feature, resource-constrained direction is a privileged direction in the uplink and downlink resource;
(2) determine the priority of carrier wave according to the prioritization criteria on the privileged direction, thereby find the highest carrier wave of priority.Such as: the prioritization criteria on the privileged direction is that the carrier wave priority that the privileged direction power resource is many more, interference more little or basic radio-cell (BRU) number of resources is many more is high more.
For another example: the prioritization criteria on the privileged direction can be that the measurement index S according to each carrier wave on the priority direction determines.Because carrier wave priority is to be used for selecting the employed carrier wave of described customer service, therefore, obtain weighing index, then according to weighing the priority that index obtains carrier wave determining that each factor that the user will consider when using carrier wave is weighted on average.Such as: the factor of consideration is a BRU number of resources in privileged direction power resource, interference and the carrier wave, then obtains the priority of carrier wave according to following steps:
(a1) obtain the measurement index S of each carrier wave according to S=Q1*M1+Q1/M2+Q3*M3, wherein, Q1, Q2 and Q3 are predefined privileged direction power resource, interference and the BRU resource consideration proportion in carrier wave priority, M1 is the priority direction power number of carrier wave, M2 is the interference coefficient of carrier wave, and M3 is the BRU number of resources of carrier wave;
(a2) the measurement index of all carrier waves according to carrier wave sorted, the measurement index of carrier wave is big more, and the priority of its carrier wave is high more.
In addition, time slot priority is to sort by time slot load balancing principle, and the priority of the time slot that remaining BRU resource is maximum is the highest.Described time slot priority also can be that the interference according to time slot is that principle sorts, and disturbs the priority of minimum its time slot of time slot the highest.
See also Fig. 3, it is the first implementing procedure schematic diagram of the channel priority queuing strategy of multi-carrier communications systems of the present invention.
Step S301, as new user or switch the user and initiate channel request, system obtains described user's resource requirement from described request.The resource requirement that comprises customer service in the described request, the ascending resource number and downlink resource number, the QoS etc. that take such as this service needed.
Step S302, system select to satisfy the carrier wave of customer services resources demand as candidate carrier from all carrier waves.Wherein, ascending resource in the candidate carrier and downlink resource all should satisfy user resource request, that is: the ascending resource number that residue ascending resource number takies more than or equal to this service needed of stipulating in the user resource request in the candidate carrier, and the downlink resource number that residue downlink resource number takies more than or equal to this service needed of stipulating in the user resource request in the candidate carrier.
Step S303 judges whether described candidate carrier number is 0, if then carry out step S308, otherwise carry out step S304.
Step S304 carries out prioritization to described candidate carrier, and then finds the highest carrier wave of priority.In the present embodiment, can determine the privileged direction of carrier wave earlier according to user's service feature, and then determine the priority of carrier wave according to the priority queueing criterion.
Wherein, determine the privileged direction of carrier wave, and then determine the priority of carrier wave, and then find the highest carrier wave of priority to be specially according to the priority queueing criterion according to user performance characteristic:
Elder generation determines the privileged direction of carrier wave according to the asymmetric situation of the up-downgoing traffic carrying capacity of business.For the user of downlink traffic greater than upstream traffic, then privileged direction is descending.For the user of upstream traffic greater than downlink traffic, then privileged direction is up.As if up-downgoing traffic carrying capacity approximately equal (being symmetrical service), then can determine the privileged direction of carrier wave according to the Internet resources feature.If uplink network is resource-constrained, then privileged direction is up, if downlink network is resource-constrained, then privileged direction is descending.
Determine carrier wave priority according to the priority queueing criterion on the privileged direction then.If the priority queueing criterion on the privileged direction be on the privileged direction power resource many more disturb more little the many more carrier wave priority of idle BRU number high more, then can from candidate carrier, find power resource maximum disturb minimum the maximum carrier wave of idle BRU number be the limit priority carrier wave.The priority queueing criterion also can be that above-mentioned disclosed measurement index is determined carrier wave priority.The measurement index maximum of carrier wave, then carrier wave priority is the highest.
In addition, determine the privileged direction of carrier wave, and then find the highest carrier wave of priority to be specially according to the priority queueing criterion according to the Internet resources feature:
Determine the privileged direction of carrier wave earlier according to the Internet resources feature.If network uplink is resource-constrained, then privileged direction is up, if the network downlink resource is limited, then privileged direction is descending.
Determine carrier wave priority according to the priority queueing criterion then.If the priority queueing criterion be on the privileged direction power resource many more disturb more little the many more carrier wave priority of idle BRU number high more, then can from candidate carrier, find power resource maximum disturb minimum the maximum carrier wave of idle BRU number be the limit priority carrier wave.The priority queueing criterion also can be that above-mentioned disclosed measurement index is determined carrier wave priority, the measurement index maximum of carrier wave then, and then carrier wave priority is the highest.
Step S305 in the carrier wave of limit priority, ranks to each time slot priority of this carrier wave.Described time slot priority is to sort by time slot load balancing principle, and the priority of the time slot that remaining BRU resource is maximum is the highest.
Step S306: system judges whether to stride time slot and arranges resource, if, then select the corresponding number time slot according to priority orders, after with the sign indicating number resource allocation of each time slot to the user (step S310) that will insert, and finish; Otherwise carry out step S307.System can determine whether that needs stride time slot and arrange resource by the resource that takies according to user's needs.Such as, the number of resources that the user need take is greater than the maximum resource number of a time slot, and then system need stride time slot to described user and arrange resource, and selects time slot according to priority.If the shared number of resources of user is smaller or equal to the maximum resource number of a time slot, then system can be with the time slot allocation of the greatest priority time slot to the user.
Step S307: judge whether the limit priority time slot can meet user's request, if, the sign indicating number resource allocation of this time slot is to the user (step S311) that will insert, and finish, otherwise after described time slot implement resource integration, again with the sign indicating number resource allocation of this time slot to the user (step S312) that will insert, and finish.Described time slot implement resource integration is meant that the resource that user in the described time slot is used is adjusted on another one or the several time slot, to reach the access that the limit priority time slot can satisfy customer service.
The sign indicating number resource is distributed the channel code that mainly is meant definite time slot.At first the priority of channel codes all in the time slot is ranked, described channel code priority is to determine according to spreading factor, and the priority of the more little channel code of spreading factor is high more; Distribute the high channel code of priority to give described user according to compact principle then.
With the TD-SCDMA communication system is example, and up spreading factor is 1,2,4,8,16, and descending spreading factor is 1,16.When selecting code channel, the channel code that the preferential spreading factor of systems attempt is little.Because the professional transmittability that the sign indicating number of two SF=16 provides is equivalent to the sign indicating number of a SF=8, the little channel code of described selection spreading factor can make system reduce section processes.System adopts compact principle to be meant that the channel code of distributing to customer service is continuous.If the channel code that distributes is more scattered, can cause some big band width service not insert like that.
If step S308 when not having up-downgoing to satisfy the carrier wave of user resources demand simultaneously in all carrier waves, then carries out the priority queueing of carrier wave, and the operation of will preferential high carrier wave implemening resource integration.Such as: in the carrier wave that satisfies the demands, the highest carrier wave of priority of selecting that this side up is implement resource integration on the other direction of described carrier wave at folk prescription.
Step S309, if successful integration, then if execution in step S305 unsuccessful, then finishes.
Select the up-downgoing resource among the first above-mentioned embodiment earlier and all satisfy the carrier wave of user resource request as candidate carrier, and these candidate carrier are carried out priority queueing according to certain criterion, select the highest carrier wave of priority as the carrier wave that is dispensed to the user then, in selected carrier wave, select the highest time slot of priority subsequently (when needs are striden time slot arrangement resource, the a plurality of time slots of selective sequential according to priority), distribute the best code channel of time slot medium priority to give described user at last.By said method, make the user can distribute a good channel, help obtaining higher system and insert success rate and handover success rate, help the user simultaneously and obtain less access delay, thereby improved the whole system combination property.
See also Fig. 4, it is the channel priority queuing strategy of another kind of multi-carrier communications systems among the present invention, and comprising: at first, when the user initiated channel request, system obtained described user's resource requirement (step S410) from described request; Then, the time slot that system selects respectively to satisfy user resource request by up direction and down direction is as up candidate's time slot and descending candidate's time slot, and, determine privileged direction (step S420); At last, from candidate's time slot of privileged direction, select the high time slot of priority, in described time slot, distribute corresponding sign indicating number resource, determine the channel (step S430) that described customer service is used thus according to the sign indicating number distribution principle.
Above-mentioned time slot is meant the time slot of being determined jointly by carrier number and timeslot number.Such as, in the TD-SCDMA system, include two carrier waves: the first carrier and second carrier wave.Each carrier wave has 6 business time-slots, carries out from 1 to 6 numbering respectively.Then can represent time slot with m/n, m is the carrier number that described time slot is in, and n is described timeslot number.Such as No. 5 business time-slot in time slot 1/5 expression the 1st carrier wave.
Obtain time slot priority when above-mentioned time slot is carried out sorting by time slot load balancing principle, the priority of the time slot that remaining BRU resource is maximum is the highest.In addition, described time slot priority also can be that the interference according to time slot is that principle sorts, and disturbs the priority of minimum its time slot of time slot the highest.
Privileged direction is determined according to user's up-downgoing traffic carrying capacity among the step S430: the direction that traffic carrying capacity is big in upstream traffic and the downlink traffic is a privileged direction, and perhaps privileged direction is determined according to the Internet resources feature: ascending resource and downlink resource are privileged direction in the limited direction of resources in network.
See also Fig. 5, it is the flow chart of second embodiment of channel priority queuing strategy in the multi-carrier communications systems of the present invention.It may further comprise the steps:
Step S501: as new user or switch the user and initiate channel request, system obtains described user's resource requirement from described request.The resource requirement that comprises customer service in the described request, ascending resource number that takies such as this service needed and downlink resource number, QoS.
Step S502 presses up-downlink direction respectively, and the time slot that satisfies resource requirement is made as up candidate's time slot and descending candidate's time slot.The ascending resource number that residue ascending resource number takies more than or equal to this service needed of stipulating in the user resource request in up candidate's time slot.The downlink resource number that residue downlink resource number takies more than or equal to this service needed of stipulating in the user resource request in descending candidate's time slot.
Step S503 if candidate's time slot collection of uplink and downlink all is empty, then changes step S513 over to.
Step S504 is according to definite privileged direction.
Asymmetric situation according to the up-downgoing traffic carrying capacity of business is determined privileged direction; For the user of downlink traffic, use descending prioritization criteria greater than upstream traffic; For the user of upstream traffic, then use up prioritization criteria greater than upstream traffic; If up-downgoing traffic carrying capacity approximately equal (being symmetrical service) is then selected restricted side's prioritization criteria (upstream or downstream prioritization criteria) according to Internet resources feature (ascending resource is limited, and still downlink resource is limited); Perhaps
Determine privileged direction according to the Internet resources feature; If network uplink is resource-constrained, then adopt up priority principle; If the network downlink resource is limited, then adopt descending priority principle.
Step S505 judges whether it is up priority principle, then changes step S506 over to if go up row major, if row major then changes step S510 over to down.
Step S506 for the situation of last row major, carries out priority queueing to all up candidate's time slots on up direction.
Step S507 at the pairing carrier wave down direction of limit priority time slot, sorts to time slot priority.
Step S508 judges whether the highest time slot of corresponding down direction priority satisfies resource requirement, if, then carry out step S509, otherwise this time slot is implement resource integration (step S515), judge integration whether successfully (step S516) then, if then change step S509 over to, otherwise finish.
Step S509 in the time slot of limit priority, to described user, and finishes the sign indicating number resource allocation of time slot.The sign indicating number resource allocation of time slot comprises: earlier the priority of channel code is ranked in described time slot, described channel code priority is to determine according to spreading factor, and the priority of the more little channel code of spreading factor is high more; Distribute the high channel code of priority to give described user according to compact principle then.
Step S510 for the situation of following row major, carries out priority queueing to all time slots on down direction.
Step S511 at the pairing up direction of limit priority time slot, sorts to time slot priority.
Step S512 judges whether the highest time slot of up direction priority satisfies resource requirement, if, then carry out step S509, otherwise this time slot is implement resource integration (step S515), judge resource consolidation whether successfully (step S516), if successful integration then change step S509 over to, otherwise finish.
Step S513 when all time slots do not satisfy resource requirement, triggers resource consolidation to time slot.When the shared number of resources of the user of institute was counted less than the maximum resource of a time slot, system need implement resource integration to the time slot that priority is the highest on the privileged direction.
Step S514, if the success, then carry out S504, unsuccessful then the end.
More than openly carrier wave, time slot are combined the method for ranking, above-mentioned carrier wave/time slot is meant by carrier number and adds the time slot that timeslot number is determined.Owing to be that up-downgoing is separately carried out, so the highest carrier wave/time slot of up-downlink direction priority may occur not on same carrier wave, at this moment can be according to up (or descending) priority principle, on privileged direction, select the highest carrier wave/time slot of priority, trigger the resource consolidation process of carrier wave, to guarantee distributing to a user's resource on a carrier wave.That is: whether the resource of judging the other direction of the time slot place carrier wave that priority is high on the privileged direction satisfies user resource request, if, directly in described time slot, distribute corresponding sign indicating number resource to give described user according to the sign indicating number distribution principle, otherwise, in described time slot, carry out resource consolidation earlier, in described time slot, distribute corresponding sign indicating number resource then, determine the channel of described user's business use thus according to the sign indicating number distribution principle.
More than open only is several specific embodiment of the present invention, but the present invention is not limited thereto, those skilled in the art can think variation, all should drop in protection scope of the present invention.
Claims (14)
1, a kind of channel priority queuing strategy of multi-carrier communications systems is characterized in that, comprising:
(1) when the user initiates channel request, system obtains described user's resource requirement from described request;
(2) system from all carrier waves, find out satisfy described user resource request carrier wave as candidate carrier, and from described candidate carrier, select the highest carrier wave of priority;
(3) from the highest carrier wave of described priority, select the high time slot of priority, in described time slot, distribute corresponding sign indicating number resource, determine the channel that described user uses thus according to the sign indicating number distribution principle.
2, the channel priority queuing strategy of multi-carrier communications systems as claimed in claim 1 is characterized in that, step (2) also comprises:
When system does not find the carrier wave that satisfies user resource request, then select the upstream or downstream folk prescription to the carrier wave that satisfies user resource request as candidate carrier, and from described candidate carrier, select the highest carrier wave of priority;
Described carrier wave is implement resource integration on other direction.
3, the channel priority queuing strategy of multi-carrier communications systems as claimed in claim 1 or 2 is characterized in that, described carrier wave priority is determined according to following steps:
Determine the privileged direction of carrier wave according to user performance characteristic or Internet resources feature, wherein when determining the privileged direction of carrier wave with user performance characteristic, the direction that traffic carrying capacity is many in the uplink and downlink traffic carrying capacity is a privileged direction, when determining the privileged direction of carrier wave with the Internet resources feature, resource-constrained direction is a privileged direction in the uplink and downlink resource;
Determine the priority of carrier wave according to the prioritization criteria on the privileged direction, thereby find the highest carrier wave of priority.
4, the channel priority queuing strategy of multi-carrier communications systems as claimed in claim 3, it is characterized in that the prioritization criteria on the privileged direction is that power resource carrier wave priority many more, that the more little or basic radio-cell BRU number of resources of interference is many more are high more on the privileged direction.
5, the channel priority queuing strategy of multi-carrier communications systems as claimed in claim 3, it is characterized in that, prioritization criteria on the privileged direction is that the measurement index S of the carrier wave on the priority direction is big more, the priority of carrier wave is high more, wherein, the measurement index S of carrier wave obtains in the following manner:
Obtain the measurement index S of each carrier wave according to S=Q1*M1+Q1/M2+Q3*M3, wherein, Q1, Q2 and Q3 are predefined privileged direction power resource, interference and the BRU resource consideration proportion in carrier wave priority, M1 is the priority direction power number of carrier wave, M2 is the interference coefficient of carrier wave, and M3 is the BRU number of resources of carrier wave.
6, the channel priority queuing strategy of multi-carrier communications systems as claimed in claim 1 is characterized in that, described time slot priority sorts by time slot load balancing principle, and the priority of the time slot that remaining BRU resource is maximum is the highest, or
Described time slot priority is that the interference according to time slot is that principle sorts, and disturbs minimum its priority of time slot the highest.
7, the channel priority queuing strategy of multi-carrier communications systems as claimed in claim 1 is characterized in that, step (3) is specially:
(a1) judge whether to stride time slot and arrange resource, if, then select the corresponding number time slot according to priority orders, and the user that will the resource allocation of the corresponding sign indicating number of described each time slot extremely will insert, otherwise carry out step (a2);
(a2) judge whether the limit priority time slot can meet user's request, if the resource allocation of the corresponding sign indicating number of this time slot is to the user that will insert, otherwise after described time slot implement resource integration, again with the corresponding sign indicating number resource allocation of this time slot to the user that will insert.
8, as the channel priority queuing strategy of claim 1 or 7 described multi-carrier communications systems, it is characterized in that, in described time slot, distribute corresponding sign indicating number resource to comprise:
Priority to channel code in described time slot is ranked, and described channel code priority is to determine according to spreading factor, and the priority of the more little channel code of spreading factor is high more;
Distribute the high channel code of priority to give described user according to compact principle.
9, a kind of channel priority queuing strategy of multi-carrier communications systems is characterized in that, comprising:
(1) when the user initiates channel request, system obtains described user's resource requirement from described request;
(2) system's time slot of selecting respectively to satisfy user resource request by up direction and down direction is as up candidate's time slot and descending candidate's time slot, and definite privileged direction;
(3) from privileged direction candidate time slot, select the high time slot of priority, in described time slot, distribute corresponding sign indicating number resource, determine the channel that described customer service is used thus according to the sign indicating number distribution principle.
10, the channel priority queuing strategy of multi-carrier communications systems as claimed in claim 9 is characterized in that, step (3) also comprises:
M1: whether the resource of judging the other direction of the time slot place carrier wave that priority is high on the privileged direction satisfies user resource request, if, directly in described time slot, distribute corresponding sign indicating number resource to give described user according to the sign indicating number distribution principle, otherwise, carry out step m2;
M2: in described time slot, carry out resource consolidation earlier, in described time slot, distribute corresponding sign indicating number resource then, determine the channel of described user's business use thus according to the sign indicating number distribution principle.
11, the channel priority queuing strategy of multi-carrier communications systems as claimed in claim 9 is characterized in that: described time slot is meant to be determined jointly by carrier number and timeslot number.
12, the channel priority queuing strategy of multi-carrier communications systems as claimed in claim 9 is characterized in that: described time slot priority is to sort by time slot load balancing principle, and the priority of the time slot that remaining BRU resource is maximum is the highest, or
Described time slot priority is that the interference according to time slot is that principle sorts, and disturbs minimum its priority of time slot the highest.
13, the channel priority queuing strategy of multi-carrier communications systems as claimed in claim 9 is characterized in that: distribute corresponding sign indicating number resource to comprise in described time slot:
In the highest carrier wave of priority and time slot the priority of channel code is ranked, described channel code priority determines that according to spreading factor the priority of the more little channel code of spreading factor is high more;
Distribute the high channel code of priority to give described user according to compact principle.
14, the channel priority queuing strategy of multi-carrier communications systems as claimed in claim 9 is characterized in that, step (2) also comprises: when system does not find the time slot that satisfies user resource request, earlier described time slot is implement resource integration.
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