CN100375572C - Method for controlling non-realtime service data transmission of mobile terminal - Google Patents
Method for controlling non-realtime service data transmission of mobile terminal Download PDFInfo
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Abstract
The present invention relates to a method for controlling non-real-time service data transmission of a mobile terminal. During the conversation stage, a special channel resource or a public channel resource is distributed for non-real-time service requesting a radio resource; in the conversation process, the distributed resource is adjusted according to service measurement. When the measurement report of the non-real-time service distributed with a special channel is processed, the service of which the measurement report is lower than the lower limit of a traffic gate limiting value is identified to be that a transmission rate can be reduced; when the traffic measurement report of the non-real-time service distributed with a public channel is processed, the resource of the service of which the traffic measurement report is lower than the lower limit of the traffic gate limiting valve is not adjusted; for the traffic measurement report which is higher than the upper limit of the traffic gate limiting value, the resource of the non-real-time service subscriber requesting the radio resource is adjusted, as the multislot capability, and the resource comprises a distributed remaining resource, or a distributed resource obtained from that the transmission rates of other mobile terminals are reduced, or a resource obtained from that the time slots of other mobile terminals are adjusted.
Description
Technical field
The present invention relates to mobile communication technology, relate in the cell mobile communication systems or rather, the method of control portable terminal non-real-time service transfer of data, the inventive method can be in having real-time and non real-time multiple business mixed environment, carry out the transmission control of non-real-time service data according to the characteristics of non-real-time service, make cell mobile communication systems obtain higher non-real-time data throughput of transmissions performance with lower implementation complexity and signaling consumption.
Background technology
The data of transmitting in cell mobile communication systems generally can be divided into two kinds of real time business data and non-real-time service data.The main feature of real time business is to have constant transmission rate to have less suddenly in other words in the whole session process, and real time of data transmission is required than higher.And the main feature of non-real-time service is to have higher suddenly in conversation procedure, and transmission rate presents bigger variation, but generally can allow higher end-to-end propagation delay time.
For the transmission of real time business data, adopt the way of distributing dedicated radio resources usually, and the resource of being distributed keeps constant in the whole session process.And, only when having data to transmit, just distribute the dedicated radio resources of respective numbers for the transmission of non-real-time service data.For example, in the mobile communication system of third generation partner program (3GPP) International Standards Organization definition, transmission at the non-real-time service data, introduced the mechanism of measuring business volume, make entity-radio network controller (RNC) of being responsible for RRM in the system can obtain user's non-real-time service data statistics amount information, thereby can adjust assigned radio resource according to user's traffic needs according to the measurement report of traffic carrying capacity.For example, when traffic carrying capacity increases, can increase certain Radio Resource for the user, and when traffic carrying capacity reduces, can consider to reduce Radio Resource, signaling procedures such as concrete implementation can be reshuffled by physical channel, transmission channel is reshuffled, radio bearer (RB) is reshuffled, transformat combination control realize that details can be referring to the description in the related standards of 3GPP TS25 series.
In addition, in the 3GPP system, not only can assigned with dedicated channel transmit the non-real-time service data, and can transmit by common signal channel, common channel resources is shared by a plurality of users and is used, unify to dispatch by radio network controller (RNC) all users at down direction to the non-real-time service of use common signal channel transmission, and at up direction, the resource of common signal channel is then used by competition mechanism by each user, and this function is finished by medium access control (MAC) protocol sublayers in the 3GPP standard.
In a word, the 3GPP system provides flexible, various selection mode for effective transmission of non-real-time service data.
Although the related standards of 3GPP has been set up the mechanism of basic control non-real-time service transfer of data, yet, do not define control algolithm and the control criterion that is adopted in the specific implementation process in the standard, as:
Defined the measuring business volume result that can adopt the periodic report mode to report non-real-time service in the standard, but how regulation RNC does not come to determine dynamically how many resources the user should distribute according to measuring business volume report after receiving measurement report;
Defined the measuring business volume result that can adopt the event-triggered reporting mode to report non-real-time service in the standard, comprise that transmission rate is higher than 4a incident in limited time and transmission rate is lower than the 4b incident of prescribing a time limit down, but definition is not at different transmission rates, these upper and lower bound threshold values are value how, and how to determine distributing how many resources to the user under corresponding situation;
Defined user terminal in the standard and can have the Cell-DCH signaling connection status of using dedicated channel resource at least, used the Cell-FACH signaling connection status of common channel resources and do not carried out the idle state etc. of transfer of data, do not controlled conversion between these states but how to provide according to measuring business volume report.
At above problem, different equipment manufacturers can adopt different algorithm policies to realize in equipment development, and can not influence interconnecting of whole cell mobile communication systems, yet, also do not see up to now about the formal open report on the implementation algorithm strategy because present 3GPP system equipment is stated function aspects in realization and also all is in development status.
In addition, in the implementation procedure of concrete control non-real-time service transfer of data, how to reduce the frequency of Signalling exchange as far as possible, the runnability of raising equipment, how to improve the transfer of data throughput of system, how to embody the priority of different user, the high user that guarantees to pay obtains Priority Service etc. under the situation of system resource anxiety, a kind of strategy in the equipment development especially, and can not in standard, stipulate.
Summary of the invention
The objective of the invention is to design a kind of method of controlling the transmission of portable terminal non-real-time service, with lower implementation complexity and signaling consumption, realize the transmission control of non-real-time data, can fully effectively utilize Radio Resource, make cell mobile communication systems obtain higher non-real-time service transfer of data throughput performance.
The technical scheme that realizes the object of the invention is such: a kind of method of controlling portable terminal non-real-time service transfer of data, comprise: at session establishment phase, for the non-real-time service user of request Radio Resource at first attempts the assigned with dedicated channel resource, assign or dedicated channel resource distributes common channel resources when being not enough to guarantee minimum transmission rate grade at dedicated channel resource; With in conversation procedure, the resource of being distributed is adjusted in report according to measuring business volume, dispatches Radio Resource between a plurality of non-real-time services, it is characterized in that:
Described in conversation procedure, the resource of being distributed is adjusted in report according to measuring business volume, further comprises:
1) when the measuring business volume report that receives the non-real-time service user who has distributed dedicated channel resource, for the measuring business volume report that is lower than traffic carrying capacity threshold value lower limit, report with this measuring business volume that the sign of pairing business is set at and to reduce transmission rate; For the measuring business volume report that is higher than the traffic carrying capacity high thresholdhigh, by the resource that non-real-time service user's the multislot capability adjustment of request Radio Resource is distributed, comprise and distribute surplus resources or distribute after the transmission rate grade that reduces other portable terminal and resource that the resource that obtains or other portable terminal carried out obtains after the time slot adjustment;
2) when the measuring business volume report that receives the non-real-time service user who has distributed common channel resources, do not do the resource adjustment for the measuring business volume report that is lower than traffic carrying capacity threshold value lower limit, for the measuring business volume report that is higher than the traffic carrying capacity high thresholdhigh, by the resource that non-real-time service user's the multislot capability adjustment of request Radio Resource is distributed, comprise and distribute surplus resources or distribute after the transmission rate grade that reduces other portable terminal and the resource that obtains or distribute behind other non-real-time service of compression and the resource that obtains.
Described traffic carrying capacity high thresholdhigh A is A=(1-μ) v by formula
BRUλ (T
Delay-τ) calculating, described traffic carrying capacity threshold value lower limit B is B=(1-μ) v by formula
BRUλ (T
Delay-τ) η calculates, and in the formula, A represents the traffic carrying capacity high thresholdhigh, and B represents traffic carrying capacity threshold value lower limit, and μ represents the average frame error rate of this non-real-time service of setting, v
BRURepresent a maximum rate that basic radio resource unit BRU can transmit, λ represents to distribute to the radio resource unit BRU quantity of this non-real-time service, T
DelayRepresent when this non-real-time service transmits in wireless access network the propagation delay time that allows, τ is the processing delay sum that comprises that reporting measurement reports, inter-process, signaling are confirmed, η represents to wish the wireless resource utility efficiency that reaches.
In the described step 1), described distribution surplus resources distribute to reduce after other portable terminal transmission rate grade and the resource that obtains and other portable terminal carried out the resource that obtains after the time slot adjustment, further comprises:
For the described non-real-time service user that multislot capability is arranged, carry out following steps:
C11. in sub-district, this non-real-time service user place, find distributable Radio Resource, be designated as E, when distributable allocation of radio resources is given the non-real-time service user of request Radio Resource in the sub-district, judge whether and its transmission rate can be improved a grade, can improve the action of then carrying out described Resources allocation, otherwise execution in step C12;
C12. find in the sub-district, this non-real-time service user place and be designated the non-real-time service that can reduce transmission rate, calculate its transmission rate is reduced the Radio Resource that is obtained after the grade, be designated as F, judge that E adds the F sum and whether can guarantee to ask the non-real-time service user's of Radio Resource transmission rate to improve a grade, can improve the action of then carrying out described Resources allocation, otherwise execution in step C13;
C13. in sub-district, this non-real-time service user place, find the non-real-time service that can compress, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as G, judge that E adds F and adds the G sum and whether can guarantee to ask the non-real-time service user's of Radio Resource transmission rate to improve a grade, can improve the action of then carrying out described Resources allocation, otherwise not adjust;
For the described non-real-time service user who does not have multislot capability, carry out following steps:
C21. calculate the residue Radio Resource in the time slot scope of this non-real-time service user place, be designated as H, when it is distributed to the non-real-time service user of request Radio Resource, judge whether and its transmission rate can be improved a grade, can improve the action of then carrying out described Resources allocation, otherwise execution in step C22;
C22. in this time slot, seek and be designated the non-real-time service that can reduce transmission rate, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as I, judge that H adds the I sum and whether can guarantee to ask the non-real-time service user's of Radio Resource transmission rate to improve a grade, can improve the action of then carrying out described Resources allocation, otherwise execution in step C23;
C23. in this time slot, seek the non-real-time service that can compress, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as J, judge that H adds I and adds the J sum and whether can guarantee to ask the non-real-time service user's of Radio Resource transmission rate to improve a grade, can improve the action of then carrying out described Resources allocation, otherwise execution in step C24;
C24. judge in this time slot, whether can allow voice service is carried out the time slot adjustment, and will adjust available resource through time slot and be designated as K, judge that H adds I and adds J and add the K sum and whether can guarantee to ask the non-real-time service user's of Radio Resource transmission rate to improve a grade, can improve the action of then carrying out described Resources allocation, otherwise not adjust.
Described step 2) in, the resource that obtains after the transmission rate grade of described distribution surplus resources and other portable terminal of distribution reduction further comprises:
For the described non-real-time service user that multislot capability is arranged, carry out following steps:
D11. in sub-district, this non-real-time service user place, find distributable Radio Resource, be designated as L, judge whether this distributable Radio Resource can carry the non-real-time service of minimum transmission rate grade, can carry the action of then carrying out described Resources allocation, otherwise execution in step D12;
D12. find in the sub-district, this non-real-time service user place and be designated the non-real-time service that can reduce transmission rate, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as M, judge that L adds the minimum transmission rate grade whether the M sum can guarantee to ask the non-real-time service user of Radio Resource, can guarantee then to carry out the action of described Resources allocation, otherwise execution in step D13;
D13. in sub-district, this non-real-time service user place, find the non-real-time service that can compress, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as N, judge that L adds M and adds the minimum transmission rate grade whether the N sum can guarantee to ask the non-real-time service user of Radio Resource, can guarantee then to carry out the action of described Resources allocation, otherwise not adjust;
For the described non-real-time service user who does not have multislot capability, carry out following steps:
D21. find the maximum time slot of residue Radio Resource, calculate the residue Radio Resource in this time slot, be designated as O, when it is distributed to the non-real-time service user of request Radio Resource, judge whether to carry the non-real-time service of minimum transmission rate grade, can guarantee then to carry out the action of described Resources allocation, otherwise execution in step D22;
D22. in this time slot, seek and be designated the non-real-time service that can reduce transmission rate, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as P, judge that O adds the minimum transmission rate grade whether the P sum can guarantee to ask the non-real-time service user of Radio Resource, can guarantee then to carry out the action of described Resources allocation, otherwise execution in step D23;
D23. in this time slot, seek the non-real-time service that can compress, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as Q, judge that O adds P and adds the minimum transmission rate grade whether the Q sum can guarantee to ask the non-real-time service user of Radio Resource, can guarantee then to carry out the action of described Resources allocation, otherwise not adjust.
The method that the present invention is proposed is applied in the cell mobile communication systems, particularly with in the 3rd generation cell mobile communication systems of 3GPP standard definition the time, can be in having real-time and non real-time multiple business mixed environment, according to non-real-time service have high sudden, can stand the characteristics of certain propagation delay time, earlier distribute an appropriate wireless resources at session establishment phase for it, again in conversation procedure, non-real-time service amount size according to reality, the measuring business volume report that promptly reports, adjust institute's assigned radio resource, between a plurality of users, carry out wireless resource scheduling, thereby can fully effectively utilize Radio Resource, carry out the transmission control of non-real-time service data.
The inventive method can make cell mobile communication systems obtain the throughput performance of higher non-real-time service transfer of data with lower implementation complexity and signaling consumption.
The method that the control non-real-time service that adopts in the inventive method transmits on common signal channel is controlled the state of travelling carriage by setting the non-real-time service travelling carriage quantity upper limit that common signal channel can support; The inventive method has been determined service volume measurement and control strategy and the traffic carrying capacity upper limit threshold value and the lower limit threshold value of non-real-time service; The processing method to the measuring business volume report that adopts in the inventive method at different measuring business volume report manners, adopts different processing methods, can adopt different User Priority aligning methods in processing procedure.
Of the present invention to definite method of measuring business volume threshold value and the processing method that measuring business volume is reported, in the specific embodiments of these methods, embodied: pursue and improve wireless resource utility efficiency, make cell mobile communication systems obtain the tactful principle of higher non-real-time data throughput of transmissions with alap implementation complexity, less signaling consumption.
Description of drawings
Fig. 1 is that the present invention is to non-real-time service data transmissions FB(flow block);
Fig. 2 is that the present invention is with the FB(flow block) of allocation of radio resources to common signal channel transmission data;
The process flow block diagram of Fig. 3 measurement report that to be the present invention report the Event triggered mode;
Fig. 4 is that radio network controller of the present invention is being handled the FB(flow block) that the Cell-FACH state event triggers the measuring business volume report.
Embodiment
The method that the present invention proposes is applied to cell mobile communication systems, particularly in the 3rd generation cell mobile communication systems of 3GPP standard definition.In having real-time and non real-time multiple business mixed environment, have very high sudden, the characteristics that can stand certain propagation delay time according to non-real-time service, distribute adequate resources at session establishment phase for it, comprise dedicated channel resource and common channel resources, then in the middle of conversation procedure, traffic carrying capacity size according to reality is a measurement report, adjust the resource of being distributed, scheduling resource between a plurality of users, thereby can fully effectively utilize Radio Resource, carry out the transmission control of non-real-time data.
When session was set up, non-real-time service was at first initiated signaling by subscriber terminal equipment (UE) and is connected the request of foundation when setting up professional the connection.After signaling connection foundation is finished, after the operations such as authentication through necessary Non-Access Stratum signaling transmission, necessity, just initiate the professional radio resource request of applying for by equipment of the core network CN to RNC, the resource quantity that needs is embodied by the peak transfer rate in transmission RAB (RAB) parameter by core net.The peak transfer rate that system supported can be divided into some grades in advance, as 16kbit/s, 32kbit/s, 64kbit/s, 128kbit/s, 384kbit/s etc.In the TD-SCDMA system, the base unit of Radio Resource is BRU.Different speed grade just needs different Radio Resource quantity to carry, and relation is one to one arranged between them, need distribute the speed of 2 BRU, 32kbit/s need distribute 4 BRU etc. as the speed of 16kbit/s.And other as Wideband Code Division Multiple Access (WCDMA) (WCDMA) mobile communication system in, also have the corresponding relation of other form.How many Radio Resources RNC at first needs to determine to also have in the system to distribute when handling such resource allocation request; Secondly the Radio Resource quantity with assignable Radio Resource quantity and service request needs compares, when Radio Resource quantity that assignable Radio Resource quantity needs more than or equal to service request, be the UE Resources allocation by the Radio Resource quantity demand of the peak transfer rate correspondence of customer requirements; When Radio Resource quantity that assignable Radio Resource quantity needs less than service request, the peak transfer rate grade that can support according to assignable Radio Resource quantity in the system then determines to distribute to the Radio Resource quantity of this UE.
In time division duplex (TDD) system, Radio Resource is dispersed on each time slot, and UE has the restriction of whether supporting the multi-slot disposal ability when the specific implementation resource allocation, therefore, for the UE that does not have the multi-slot disposal ability, system need carry out required Radio Resource and the relevant judgement that can supply between distributing radio resource on the selecteed time slot.
Above method can be applicable to the allocation of radio resources of up-downgoing respectively, after the Radio Resource quantity of up-downgoing has assigned, just can further determine the configuration parameter of bottom, as code channel, transformat, TFS Transport Format Set etc.
Fig. 1 is the allocation of radio resources embodiment flow chart at a typical non-real-time service transfer of data of time-division one synchronous code division multiple access (TD-SCDMA) mobile communication system.
In above-mentioned resource allocation flow process, in the up-downgoing either direction, if the Radio Resource of all dedicated channels in the system has distributed to all that other user uses or system in remaining Radio Resource when being not enough to support the required Radio Resource of minimum transmission rate grade, then system inserts the UE of request to this application non-real-time service, utilize the common signal channel distributing radio resource, carry out transfer of data, as under the Cell-FACH state, transmitting the non-real-time service data in the 3GPP system.
Can command transmitting data and non-real-time service data on the common signal channel, signaling data has higher priority and preferentially obtains the transmission assurance, therefore, under the situation that the common signal channel capacity is determined, system can utilize the capacity of command transmitting data redundancy to transmit non-real-time service.At down direction, this function is to carry out the dispatching algorithm to a plurality of UE by the media access control sublayer among the RNC to finish in the 3GPP system; And at up direction, a plurality of UE use uplink common channel by the random access protocol competition.But no matter be upstream or downstream, common signal channel the UE quantity that can support all be limited, after surpassing a specific quantity thresholding, the performance of transfer of data and efficient will can not get guaranteeing, therefore, need the quantity of UE on the control common signal channel.
Fig. 2 is illustrated in the detailed process flow process of control UE quantity on the common signal channel.
System controls UE quantity on the common signal channel according to the following procedure, and this UE quantity upper limit is pre-determined by system.
Step 203 judges not comprise whether the preceding UE quantity that is in former Cell-FACH signaling connection status of this terminal (UE) has met or exceeded the common signal channel number of users upper limit, if execution in step 204 then, otherwise execution in step 205;
Step 204 never comprises in the preceding status list that is in former Cell-FACH signaling connection status of this terminal (UE) and finds out the UE of lowest priority (User Priority of system assignment), and controls it and be transformed into free time (idel) state;
After the resource allocation success, RNC just can carry out service volume measurement and control to this UE.The service volume measurement and control of UE is carried out respectively at up-downlink direction, the measuring business volume of wherein realizing in UE is a up direction, and the measuring business volume of down direction is actually to be finished in RNC inside.For the UE that has distributed dedicated channel wireless resource, RNC can select to require UE to report by Event triggered mode reporting service measurement amount by report of periodic report measuring business volume or selection as required.When selecting to press the report of periodic report measuring business volume, a kind of fairly simple implementation strategy is that the UE of all non-real-time services in the whole sub-district of control adopts identical reporting period, and the measurement report cycle of up-downgoing is independently controlled.For the UE that has distributed common signal channel,, therefore can only select by the report of Event triggered mode reporting service measurement amount because periodic measurement report itself will increase the expense of signaling transmission.When control UE reported mode by Event triggered, RNC also needed the lower limit (be lower than lower limit or be higher than to trigger and report) of the upper limit and the traffic carrying capacity of definite traffic carrying capacity in limited time.If it is too high that the upper limit of traffic carrying capacity is provided with, then system can be because response speed be too slow, original Radio Resource can't satisfy the needs of traffic carrying capacity and unnecessary packet loss occur, and is low if the upper limit of traffic carrying capacity was provided with, and then can cause system to carry out the processing of resource re-allocation continually.For the lower limit of traffic carrying capacity, if be provided with low excessively, then can not utilize Radio Resource fully, and be provided with too high, also can cause system to carry out the processing of measuring business volume report continually.Therefore, the upper and lower bound of traffic carrying capacity all will reasonably be provided with, and for the non-real-time service that uses dedicated channel resource, the traffic carrying capacity upper and lower limit method to set up that the present invention proposes is as follows:
The traffic carrying capacity upper limit is provided with: A=(1-μ) v
BRUλ (T
Delay-τ) (1)
The traffic carrying capacity lower limit is provided with: B=(1-μ) v
BRUλ (T
Delay-τ) η (2)
In the formula, μ is expressed as the average frame error rate of this traffic set, v
BRURepresent the maximum rate that a basic radio resource unit (BRU) can transmit, λ represents to distribute to this professional radio resource unit (BRU) quantity, T
DelayRepresent when this business is transmitted in wireless access network the propagation delay time that allows, τ is processing delay sums such as measurement report, inter-process, signaling affirmation, and η represents to wish the wireless resource utility efficiency that reaches.The span of η is 0～100%.When equipment comes into operation, can default value of first given η, as 40%,, can adjust according to network optimization personnel's suggestion in the network optimization stage.
Get traffic carrying capacity upper limit threshold value for [A], traffic carrying capacity lower limit threshold value be [B], and symbol [x] expression is here got less than x and approached the centrifugal pump (round numbers) that the protocol compliant of x is stipulated most.Formula (1), (2) have reflected that also the processing policy that the inventive method is mentioned is only significant when having only propagation delay time that non-real-time service allows greater than processing delay.In specific embodiment, also need to consider the setting of buffer (buffer) size of actual treatment non-real-time service.For example, for down direction, the buffer of non-real-time service is arranged in the service plane of RNC inside, and when the buffer size of a certain wireless channel carrying during less than A, then the buffer size with reality replaces A.And for up direction, the buffer of non-real-time service is provided with voluntarily at user terminal, network can be known only is buffer size in the terminal wireless access capability parameter of terminal to report, the relevant therewith number (being designated as Nam) that also has the maximum non-real-time service radio bearer that a terminal can support.Like this, measuring business volume report threshold value is definite just also relevant with the implementation of terminal.When terminal is supported the dynamic assignment of buffer, the buffer that each radio bearer can distribute is maximum to be similar to the buffer ability size that reaches terminal to report, when the buffer in the terminal is static allocation, as a mean allocation Nam radio bearer, then each radio bearer buffer that can distribute can be similar to and reach buffer/Nam (buffer sizes of terminal to report is divided by the number Nam of non-real-time service radio bearer).Like this, for up direction, can determine to adopt the buffer ability that reports according to the situation of terminal still is to adopt buffer/Nam to replace A.
After the service volume measurement and control of having carried out UE, RNC is the dynamically business conduct of monitoring UE just, the Radio Resource of UE is adjusted according to the measuring business volume report of UE, thereby is fully improved utilization ratio of wireless resources in good time.Mode according to the measuring business volume report, need the corresponding 3 kinds of processing methods that adopt, promptly distributed dedicated channel and adopted the processing method of Event triggered reporting service measurement amount report, the processing method of having distributed dedicated channel and having adopted the processing method of periodic report measurement report and having distributed common signal channel employing Event triggered reporting measurement reports.Below by Fig. 3, Fig. 43 kinds of processing methods are described respectively.
Fig. 3 is that RNC receives the handling process of having distributed dedicated channel and having adopted the report of Event triggered reporting service measurement amount.Receive the measuring business volume report back (step 301) of having distributed dedicated channel and having adopted Event triggered (incident comprise be lower than under the threshold value in limited time and when being higher than high thresholdhigh) to report, at first judgement is if be lower than the measuring business volume report (step 302) that the Event triggered of prescribing a time limit under the threshold value reports, then corresponding service being designated can changing down, but do not adjust immediately, when setting this sign, start a timer simultaneously, should identify effectively before timer expiry, the timer expiry relief should sign lose efficacy.Whether adjust and depend on then whether other business has the requirement or the system that increase resource that new service access (step 303,304) is arranged.If the measuring business volume report (step 302) that judgement is the Event triggered when being higher than high thresholdhigh to be reported is then handled according to the multislot capability of UE.
During concrete the processing, judge whether this terminal has multi-slot access capability (step 305) earlier.
When judging that this terminal has the multi-slot access capability, in cell range, carry out following processing (step 306) successively:
In 1 this sub-district of inquiry whether the residue Radio Resource is arranged, when Query Result is "Yes", obtain the surplus resources in this sub-district and be designated as E, when judgement is given the non-real-time service of this terminal with the surplus resources E in little, whether its transmission rate can be improved a grade, if could would distribute, would carry out the adjustment (step 309,311) of respective rate;
If 2 can not further inquire about whether to have in this sub-district and be designated the non-real-time service that can reduce transmission rate, when Query Result is "Yes", calculating is designated the non-real-time service that can reduce transmission rate and is reducing the resource that is obtained after the speed grade, be designated as F, judge that can E+F guarantee that pending non-real-time service can improve a speed grade, if could will be designated the non-real-time service that can reduce transmission rate and reduce a speed grade, the resource E+F that obtains is distributed to pending user, carry out the adjustment (step 309 of respective rate, 311);
If 3 can't, then further inquire about and whether can compress other low priority user business in this sub-district, when Query Result is "Yes", calculating reduces its transmission rate the resource that is obtained after the grade, be designated as G, judge whether E+F+G can guarantee pending professional speed grade that improves, if could would reduce the speed grade of lower priority non-real-time service, the resource E+F+G that obtains is distributed to pending user, carry out the adjustment (step 309 of respective rate, 311), if could would not do not adjust and finish to adjust flow process (step 309,310).
When judging that this terminal does not have the multi-slot access capability, in the time slot scope of the present place of this terminal, carry out following processing (step 307) successively:
In 1 this time slot of inquiry whether the residue Radio Resource is arranged, when Query Result is "Yes", calculate the residue Radio Resource, be designated as H, when judgement is given the non-real-time service of this terminal with the surplus resources H in the time slot, whether its transmission rate can be improved a grade, if could with the non-real-time service that the surplus resources H in the time slot gives this terminal, would carry out the adjustment (step 308,311) of corresponding transmitting rate:
If 2 can not further inquire about whether to have in this time slot and be designated the non-real-time service that can reduce transmission rate, when Query Result is "Yes", calculating will be designated can changing down non-real-time service reduce the Radio Resource that speed grade obtained, be designated as I, judge that then can H+I guarantee that pending non-real-time service can improve a speed grade, if could will be designated can changing down non-real-time service reduce a speed grade, the resource H+I that obtains is distributed to pending business, carry out the adjustment (step 308 of corresponding transmitting rate, 311);
If 3 can't, then further inquire about whether other low priority user business that can compress is arranged in this time slot, when Query Result is "Yes", calculating reduces its transmission rate the resource that is obtained after the grade, be designated as J, judge whether H+I+J can guarantee pending professional speed grade that improves, if could the non-real-time service of lower priority would be reduced a speed grade, the resource H+I+J that obtains is distributed to pending business, carry out the adjustment (step 308,311) of corresponding transmitting rate;
If 4 can't, whether then further see for the operation in selected time slot can be by the time slot adjustment operation (DCA) (being about to voice service adjusts in other time slot) to voice service, and record to adjust available resource by time slot be K, judge whether H+I+J+K can guarantee pending professional speed grade that improves, if could would carry out the time slot adjustment, the resource H+I+J+K that obtains is distributed to pending business (step 308,311), if can't, do not adjust and finish to adjust flow process (step 308,310).
If the business that speed has been compressed to the minimum-rate grade in the above-mentioned steps also needs to be compressed (speed boil down to 0), then whether it is transformed into the Cell-FACH state that is in the common channel signalling connection, and carries out subsequent treatment by flow process shown in Figure 2 according to multi-service combination decision.
In the operation of the speed grade of other low priority non-real-time service of above-mentioned compression, adopted absolute priority principle according to service priority, the order of selecting is undertaken by the order of background class 4, interactive class 3, interactive class 2 and interactive class 1 (background class 4, interactive class 3, interactive class 2 and interactive class 1 delimited according to communication standard), can guarantee under the situation of system resource anxiety, higher priority business preferentially obtains resource, this strategy help that operator is ready to pay according to the user what determine professional priority.
In addition, also can adopt the path loss principle, the preferential bigger non-real-time service of compressed path loss.Or adopt and disturb principle, the non-real-time service of the UE that the suffered interference of preferential compression is bigger, allow the preferable UE in present position preferentially obtain resource, thereby can make system obtain bigger throughput, this strategy helps operator and acquires an advantage from the throughput of system maximum angle.
In the signaling control flow after report is handled to measuring business volume; because the UE measurement report is asynchronous; and the resource adjustment of UE just can be carried out the processing of subsequent step after need confirming by signaling; like this; occurring in a UE is possibly just carrying out in the process that signaling confirms; the situation that measurement report is handled again; chaotic for avoiding RNC to handle; can after carrying out the resource adjustment, open UE a protection timer; when timer is not overtime; forbid that RNC carries out the resource adjustment once more to this Packet Service; avoid the resource allocation confusion that UE may be caused by frequent adjustment (if in the agreement to this procedure definition the protection timer, then there is no need to add again this protection timer).
When having distributed dedicated channel to adopt the mode of periodic report measuring business volume report, also can adopt with shown in Figure 3 the Event triggered reporting measurement reports is handled essentially identical handling process, just in step 302, RNC at first needs measuring business volume report is adjudicated comparison, judge promptly whether the traffic carrying capacity that reports is lower than traffic carrying capacity thresholding lower limit or is higher than the traffic carrying capacity thresholding upper limit, when determining that traffic carrying capacity is less and being lower than a certain thresholding, then this terminal of mark can changing down, when traffic carrying capacity is higher than a certain thresholding, then carry out the processing that resource is adjusted.Here, the judgement that is lower than a certain lower limit thresholding or is higher than a certain upper limit thresholding can be adopted the identical method (formula 1,2) of definite bound threshold value when the event-triggered reporting mode, but the value of the final upper limit and lower limit A, B needn't be carried out the defined operation of symbol [x] (rounding operation).
RNC shown in Fig. 4 handles the handling process when having distributed common signal channel (Cell-FACH signaling connection status) to adopt the report of Event triggered reporting service measurement amount.Under this state, RNC is the amount of the managing business measurement report that is higher than upper limit threshold value only, does not carry out measurement report and UE is disregarded or controlled to the measurement report that is lower than the lower limit threshold value when traffic carrying capacity is lower than the lower limit threshold value.
Step 401 receives the measuring business volume report (be lower than the traffic carrying capacity lower limit or be higher than the Event triggered of prescribing a time limit on the traffic carrying capacity) that Event triggered reports.
Step 402 judges whether it is the measurement report that traffic carrying capacity is higher than upper limit threshold value, is then further execution in step 404, otherwise execution in step 403.
Step 403 is disregarded the measurement report that is lower than the lower limit threshold value, finishes to adjust flow process.
Step 404 is higher than the measurement report of upper limit threshold value to traffic carrying capacity, judges whether this terminal has the multi-slot access capability, has, and then changes step 406 and handles, and does not have, and then changes step 405 and handles;
Step 406 finds distributable Radio Resource in sub-district, user place, be designated as L, judges when this surplus resources L is given this business, whether can carry minimum transmission rate grade, promptly satisfies the minimum resources requirement;
Step 405 is judged in step 404 when terminal does not have the multi-slot access capability, selects the maximum time slot of residue Radio Resource O (RU);
Step 407 at first judges whether can carry minimum transmission rate grade when surplus resources O gives this business in the selected time slot, promptly satisfies the minimum resources requirement;
Step 413 in the step 406,407, if when the judged result of arbitrary step is " energy ", perhaps after execution of step 412, will be carried out the adjustment of corresponding transmitting rate.Distribute surplus resources (at 406,407) or each the resource sum that is obtained behind surplus resources and the changing down is distributed to pending business (at 412).
When reducing the non-real-time service of other low priority UE, equally also can select aforesaid priority selection strategy for use.Perhaps adopt the path loss principle or adopt the strategy that disturbs principle.
If it is minimum that the transmission rate grade of low priority UE has been compressed to, when also requiring compression (boil down to 0), then this UE is transformed into Cell-FACH signaling connection status.
Fig. 3, Fig. 4 flow process have embodied will have the UE of higher traffic needs to be transformed to the use dedicated channel from common signal channel, and traffic carrying capacity in the sub-district is not high, that priority is lower UE compression speed, even be transformed into the thought of common signal channel from dedicated channel.
Method of the present invention can be applied in the cell mobile communication systems, particularly in the 3rd generation cell mobile communication systems of 3GPP standard definition, in having real-time and non real-time multiple business mixed environment, characteristics according to non-real-time service, distribute adequate resources at session stage, in conversation procedure, adjust the resource of being distributed according to the measuring business volume report according to the actual volume size, between a plurality of users, dispatch, thereby fully effectively utilize Radio Resource, carry out the transmission control of non-real-time data.
Claims (13)
1. method of controlling portable terminal non-real-time service transfer of data, comprise: at session establishment phase, for the non-real-time service user of request Radio Resource at first attempts the assigned with dedicated channel resource, assign or dedicated channel resource distributes common channel resources when being not enough to guarantee minimum transmission rate grade at dedicated channel resource; With in conversation procedure, the resource of being distributed is adjusted in report according to measuring business volume, dispatches Radio Resource between a plurality of non-real-time services, it is characterized in that:
Described in conversation procedure, the resource of being distributed is adjusted in report according to measuring business volume, further comprises:
1) when the measuring business volume report that receives the non-real-time service user who has distributed dedicated channel resource, for the measuring business volume report that is lower than traffic carrying capacity threshold value lower limit, report with this measuring business volume that the sign of pairing business is set at and to reduce transmission rate; For the measuring business volume report that is higher than the traffic carrying capacity high thresholdhigh, the resource of being distributed by non-real-time service user's the multislot capability adjustment of request Radio Resource, comprise the distribution surplus resources, the resource that distribute to reduce the resource that obtains after the transmission rate grade of other portable terminal and other portable terminal carried out obtain after the time slot adjustment;
2) when the measuring business volume report that receives the non-real-time service user who has distributed common channel resources, do not do the resource adjustment for the measuring business volume report that is lower than traffic carrying capacity threshold value lower limit, for the measuring business volume report that is higher than the traffic carrying capacity high thresholdhigh, the resource of being distributed by non-real-time service user's the multislot capability adjustment of request Radio Resource, after comprising the distribution surplus resources and distribute reducing the transmission rate grade of other portable terminal and the resource that obtains.
2. the method for control portable terminal non-real-time service transfer of data according to claim 1 is characterized in that describedly at session establishment phase, at first attempts the assigned with dedicated channel resource, further comprises:
A1. set up the predetermined transmission rate grade of the corresponding communication system of transmission rate of being asked in the request with non-real-time service, obtain the required Radio Resource quantity corresponding with this grade;
A2. obtain the Radio Resource quantity that to be assigned with;
A3. distributable Radio Resource quantity and required Radio Resource quantity are compared, when distributable Radio Resource quantity during more than or equal to required Radio Resource quantity, distribute by required Radio Resource quantity, when distributable Radio Resource quantity during, distribute by the pairing Radio Resource quantity of peak transfer rate grade that the Radio Resource quantity that can be assigned with can be supported less than required Radio Resource quantity.
3. the method for control portable terminal non-real-time service transfer of data according to claim 2, it is characterized in that in time division duplex mobile communication system, before execution in step A2, judge further whether the non-real-time service user of request Radio Resource has the multi-slot access capability; When having the multi-slot access capability, in steps A 2, in sub-district, this non-real-time service user place, obtain distributable Radio Resource quantity; When not having the multi-slot access capability, in steps A 2, in the maximum time slot of residue Radio Resource quantity, obtain distributable Radio Resource quantity.
4. the method for control portable terminal non-real-time service transfer of data according to claim 1, it is characterized in that describedly assigning or dedicated channel resource distributes common channel resources when being not enough to guarantee minimum transmission rate grade, further comprise at dedicated channel resource:
B1. the non-real-time service user who determines the request Radio Resource can be transmitted non-real-time service on common signal channel;
B2. judge and do not comprise whether this user Shi Ke transmit non-real-time service on common signal channel number of users has reached the upper limit of communication system setting;
B3. the number of users of non-real-time service reaches going up in limited time that communication system sets, from can finding the minimum user of priority the user list of common signal channel transmission non-real-time service, and controls this lowest priority user and is transformed into idle condition;
B4. the number of users of judging non-real-time service among the step B2 does not reach the upper limit that communication system is set, or behind execution of step B3, priority according to the non-real-time service user who asks Radio Resource is aligned to it in described user list, carries out the resource allocation of common signal channel.
5. the method for control portable terminal non-real-time service transfer of data according to claim 1, it is characterized in that: in the described step 1), described for the measuring business volume report that is lower than traffic carrying capacity threshold value lower limit, report with this measuring business volume that the sign of pairing business is set at and to reduce transmission rate, also be included in and start a timer when setting described sign, before timer expiry, should identify effectively, behind timer expiry, should sign lose efficacy.
6. the method for control portable terminal non-real-time service transfer of data according to claim 1, it is characterized in that: in the described step 1), described measuring business volume report comprises measuring business volume report that reports in the Event triggered mode and the measuring business volume report that reports in the period measurement mode, receiving measuring business volume when report that reports in the period measurement mode, carrying out the judgement whether to measuring business volume report is higher than the traffic carrying capacity high thresholdhigh or is lower than traffic carrying capacity threshold value lower limit earlier.
7. the method for control portable terminal non-real-time service transfer of data according to claim 1 is characterized in that: described traffic carrying capacity high thresholdhigh is A=(1-μ) v by formula
BRUλ (T
Delay-τ) calculating, described traffic carrying capacity threshold value lower limit is B=(1-μ) v by formula
BRUλ (T
Delay-τ) η calculates, and in the formula, A represents the traffic carrying capacity high thresholdhigh, and B represents traffic carrying capacity threshold value lower limit, and μ represents the average frame error rate of this non-real-time service of setting, v
BRURepresent a maximum rate that basic radio resource unit BRU can transmit, λ represents to distribute to the radio resource unit BRU quantity of this non-real-time service, T
DelayRepresent when this non-real-time service transmits in wireless access network the propagation delay time that allows, τ is the processing delay sum that comprises that reporting measurement reports, inter-process, signaling are confirmed, η represents to wish the wireless resource utility efficiency that reaches.
8. the method for control portable terminal non-real-time service transfer of data according to claim 7, it is characterized in that: for down direction, when the buffer sizes of a certain wireless channel carrying during less than A, then the buffer sizes with the non-real-time service actual allocated replaces A; For up direction, if the buffer sizes of non-real-time service reporting of user is less than A, when the non-real-time service user supports the dynamic assignment of buffer, then the buffer sizes with the non-real-time service reporting of user replaces A, when the buffer among the non-real-time service user was static allocation, then the buffer sizes with the non-real-time service reporting of user replaced A divided by the maximum non-real-time service radio bearer number Nam that the non-real-time service user can support.
9. the method for control portable terminal non-real-time service transfer of data according to claim 1, it is characterized in that: in the described step 1), described distribution surplus resources, distribute the resource that obtains after other portable terminal transmission rate grade of reduction, the resource that obtains further comprises with other portable terminal being carried out after the time slot adjustment:
For the described non-real-time service user that multislot capability is arranged, carry out following steps:
C11. in sub-district, this non-real-time service user place, find distributable Radio Resource, be designated as E, when distributable allocation of radio resources is given the non-real-time service user of request Radio Resource in the sub-district, judge whether and its transmission rate can be improved a grade, can improve the action of then carrying out described Resources allocation, otherwise execution in step C12;
C12. find in the sub-district, this non-real-time service user place and be designated the non-real-time service that can reduce transmission rate, calculate its transmission rate is reduced the Radio Resource that is obtained after the grade, be designated as F, judge that E adds the F sum and whether can guarantee to ask the non-real-time service user's of Radio Resource transmission rate to improve a grade, can improve the action of then carrying out described Resources allocation, otherwise execution in step C13;
C13. in sub-district, this non-real-time service user place, find the non-real-time service that can compress, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as G, judge that E adds F and adds the G sum and whether can guarantee to ask the non-real-time service user's of Radio Resource transmission rate to improve a grade, can improve the action of then carrying out described Resources allocation, otherwise not adjust;
For the described non-real-time service user who does not have multislot capability, carry out following steps:
C21. calculate the residue Radio Resource in the time slot scope of this non-real-time service user place, be designated as H, when it is distributed to the non-real-time service user of request Radio Resource, judge whether and its transmission rate can be improved a grade, can improve the action of then carrying out described Resources allocation, otherwise execution in step C22;
C22. in this time slot, seek and be designated the non-real-time service that can reduce transmission rate, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as I, judge that H adds the I sum and whether can guarantee to ask the non-real-time service user's of Radio Resource transmission rate to improve a grade, can improve the action of then carrying out described Resources allocation, otherwise execution in step C23;
C23. in this time slot, seek the non-real-time service that can compress, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as J, judge that H adds I and adds the J sum and whether can guarantee to ask the non-real-time service user's of Radio Resource transmission rate to improve a grade, can improve the action of then carrying out described Resources allocation, otherwise execution in step C24;
C24. judge in this time slot, whether can allow voice service is carried out the time slot adjustment, and will adjust available resource through time slot and be designated as K, judge that H adds I and adds J and add the K sum and whether can guarantee to ask the non-real-time service user's of Radio Resource transmission rate to improve a grade, can improve the action of then carrying out described Resources allocation, otherwise not adjust.
10. the method for control portable terminal non-real-time service transfer of data according to claim 9, it is characterized in that: among described step C13, the C23, described compression is the absolute priority principle operation by non-real-time service priority, preferentially compresses the non-real-time service of low priority; Or operate the preferential big non-real-time service of compressed path loss by the principle of non-real-time service path loss; Or operate by the interference principle of non-real-time service, big non-real-time service is disturbed in preferential compression.
11. the method for control portable terminal non-real-time service transfer of data according to claim 9, it is characterized in that: among described step C13, the C23, be in the non-real-time service of minimum transmission rate grade, still need to compress if be judged, then the user of this non-real-time service is transformed into and is in the common channel signalling connection status.
12. the method for control portable terminal non-real-time service transfer of data according to claim 1, it is characterized in that: described step 2), the resource that obtains after the transmission rate grade of described distribution surplus resources and other portable terminal of distribution reduction further comprises:
For the described non-real-time service user that multislot capability is arranged, carry out following steps:
D11. in sub-district, this non-real-time service user place, find distributable Radio Resource, be designated as L, judge whether this distributable Radio Resource can carry the non-real-time service of minimum transmission rate grade, can carry the action of then carrying out described Resources allocation, otherwise execution in step D12;
D12. find in the sub-district, this non-real-time service user place and be designated the non-real-time service that can reduce transmission rate, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as M, judge that L adds the minimum transmission rate grade whether the M sum can guarantee to ask the non-real-time service user of Radio Resource, can guarantee then to carry out the action of described Resources allocation, otherwise execution in step D13;
D13. in sub-district, this non-real-time service user place, find the non-real-time service that can compress, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as N, judge that L adds M and adds the minimum transmission rate grade whether the N sum can guarantee to ask the non-real-time service user of Radio Resource, can guarantee then to carry out the action of described Resources allocation, otherwise not adjust;
For the described non-real-time service user who does not have multislot capability, carry out following steps:
D21. find the maximum time slot of residue Radio Resource, calculate the residue Radio Resource in this time slot, be designated as 0, when it is distributed to the non-real-time service user of request Radio Resource, judge whether to carry the non-real-time service of minimum transmission rate grade, can guarantee then to carry out the action of described Resources allocation, otherwise execution in step D22;
D22. in this time slot, seek and be designated the non-real-time service that can reduce transmission rate, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as P, judge 0 adds the minimum transmission rate grade whether the P sum can guarantee to ask the non-real-time service user of Radio Resource, can guarantee then to carry out the action of described Resources allocation, otherwise execution in step D23;
D23. in this time slot, seek the non-real-time service that can compress, calculating reduces its transmission rate the Radio Resource that is obtained after the grade, be designated as Q, judge that 0 adds P and adds the minimum transmission rate grade whether the Q sum can guarantee to ask the non-real-time service user of Radio Resource, can guarantee then to carry out the action of described Resources allocation, otherwise not adjust.
13. the method for control portable terminal non-real-time service transfer of data according to claim 12, it is characterized in that: among described step D13, the D23, described compression is the absolute priority principle operation by non-real-time service priority, preferentially compresses the non-real-time service of low priority; Or operate the preferential big non-real-time service of compressed path loss by the principle of non-real-time service path loss; Or operate by the interference principle of non-real-time service, big non-real-time service is disturbed in preferential compression.
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