CN100456746C

CN100456746C - Method for backward realizing private line user mechanism in communication system

Info

Publication number: CN100456746C
Application number: CNB200610099502XA
Authority: CN
Inventors: 万蓉; 蓝金巧
Original assignee: Huawei Technologies Co Ltd
Current assignee: XFusion Digital Technologies Co Ltd
Priority date: 2006-07-26
Filing date: 2006-07-26
Publication date: 2009-01-28
Anticipated expiration: 2026-07-26
Also published as: CN1889524A; WO2008014653A1

Abstract

A method for realizing special-line user mechanism at reverse direction in communication system includes confirming end object packet length of reverse special-line user, confirming TxT2Pmin and TxT2Pmax value-taken scope of emission service channel energy to pilot frequency channel power grain TxT2P, setting allowable packet length of data packet being send currently to be not less than confirmed packet length and setting reverse packet as per allowable packet length then transmitting set reverse packet according to set TxT2Pmin and TxT2Pmax.

Description

In the communication system in the method that oppositely realizes dedicated line user mechanism

Technical field

The present invention relates to data communication technology, relate in particular in the communication system in the method that oppositely realizes dedicated line user mechanism.

Background technology

At present, the energy of Traffic Channel is with respect to the power gain (T2P of pilot channel in the wireless telecommunication system, Traffic Channel to Pilot Channel transmit power ratio) processing method is the evolution version (EVDO that CDMA20001x only supports data service, the core processing method of the MAC agreement of reverse traffic channel Evolution Data Only) (RTC MAC, Reverse Traffic Channel MediumAcess Control) subtype 3.In CDMA2000EV-DO RevA system, introduced the notion of stream (flow), because homogeneous turbulence does not have different grades and different service quality (QoS) requirement, therefore prior art has adopted a kind of processing method of leaking bucket to come convection current to dispatch, and each stream all has a similar memory cell of leaking bucket to come storage resources.As shown in Figure 1, T2PInflow represents to inject the T2P resource of leaking the bucket memory cell, is current available T2P resource; Potential T2POutflow is the potential T2P resource that current subframe can access; And T2POutflow has represented through the real T2P resource that flows out after the evaluation process, and promptly actual allocated is given user's T2P resource; BucketLevel shows the current state of leakage bucket, promptly equals the leak current T2P stock number of accumulating of bucket, and BucketLevelSat represents to leak the maximum T2P stock number that bucket can hold.The T2P processing method comes each stream is dispatched by bringing in constant renewal in the leakage bucket.

As shown in Figure 1, the stream that grade is high, more T2P resource is arranged, can be dispatched faster, in a physical layer packet, can take more byte number, and can improve the grade of whole physical layer packet, thereby adopt higher T2P to send, therefore corresponding the mixing retransmits (HARQ) number of times also just still less automatically, and time delay is also just littler.Briefly, the T2P processing method has realized reverse rate scheduling, and the bag that determines current subframe (subframe) to send out is long, the transmission mode of being given out a contract for a project, and the power of giving out a contract for a project.This processing method can realize with the service quality of indoor (intra-user) (QoS).

But present T2P processing method can't oppositely realize dedicated line user mechanism.Present T2P processing method all is to be principle to take into account performance and fairness, and given parameter configuration all is in order to realize the different priorities of the inner various flows of user, not consider the priority between the user.And dedicated line user mechanism is not only emphasized the different priorities of the inner various flows of user, but also Special attention will be given to the priority between the user, individual line subscriber requires online at any time, whenever asks connecting system all will be allowed to; To contract when individual line subscriber is opened an account, need to guarantee that the service that obtains can have stable bandwidth.So use the T2P processing method can not realize dedicated line user mechanism in the prior art simply.

Summary of the invention

In view of this, main purpose of the present invention is to provide in a kind of communication system in the method that oppositely realizes dedicated line user mechanism, makes individual line subscriber relatively stable in signatory bandwidth in reverse speed.

In order to realize the foregoing invention purpose, main technical schemes of the present invention is:

In the method that oppositely realizes dedicated line user mechanism, this method comprises in a kind of communication system:

A, determine that the termination target bag of reverse dedicated line user is long;

The minimum value TxT2Pmin of the power gain TxT2P of the relative pilot channel of Traffic Channel energy of B, definite emission and the span of maximum of T xT2Pmax; TxT2Pmin and TxT2Pmax are arranged in the described span;

C, the current permission bag length that sends packet are set to more than or equal to the determined bag of steps A long, according to the long group of described permission bag reserved packet;

D, send the reserved packet organized according to set TxT2Pmin, TxT2Pmax.

Preferably, described steps A specifically comprises: search the CAMEL-Subscription-Information of reverse dedicated line user, the bag of corresponding termination target of finding corresponding bandwidth and pattern according to user's signatory bandwidth and configuration mode in default reverse traffic channel speed and payload table is long.

Preferably, definite method of the span of the TxT2Pmin of step B and TxT2Pmax is:

Under user's configuration mode, the power gain T2P value of the described bag length of steps A required relative pilot channel of Traffic Channel energy before transfer point is as the left end value of described span; High one grade of bag that the described bag of steps A is grown is grown the right-hand member value of T2P value required before transfer point as described span.

Preferably, described TxT2Pmin is set to the left end value more than or equal to described span; Described TxT2Pmax is set to the right-hand member value less than described span.

Preferably, described method further comprises: the value of the basic interpolation point of T2Pmax is arranged in the span of described TxT2Pmin and TxT2Pmax.

Preferably, the minimum value of the Bao Changzhong of three packets that the described permission of step C Bao Changwei sent before current data packet, the minimum value of the Bao Changzhong of these three packets is set to more than or equal to the determined bag of steps A long.

Preferably, the minimum value T2PInflow min of the power gain T2P resource of the relative pilot channel of Traffic Channel energy of injection leakage bucket memory cell is set to the minimum value greater than the described span of step B, provide T2P resource according to T2PInflow min for reserved packet, described leakage bucket memory cell is the available T2P resource of described reverse dedicated line user stream storage.

Preferably, realize the minimum value of T2PInflow min by growth step-length T2Pup function and decline step-length T2Pdown function that T2P is set greater than the described span of step B.

Preferably, the power gain T2P resource PotentialT2POutflow of the relative pilot channel of potential Traffic Channel energy that current reserved packet can obtain from leak the bucket memory cell is set to the minimum value more than or equal to the described span of step B, for described reserved packet provides T2P resource, described leakage bucket memory cell is the available T2P resource of described reverse dedicated line user stream storage.

Preferably, inject the described power gain T2P resource T2PInflow that leaks the relative pilot channel of Traffic Channel energy of bucket memory cell by being provided with, the current T2P stock number BucketLevel that accumulates of described leakage bucket memory cell, and T2PInflow and BucketLevel can continuous action time T T2PHold, realize the minimum value of PotentialT2POutflow more than or equal to the described span of step B.

Preferably, grow up when the default parcel that has an Auxiliary Pilot Channel is long, then add the performance number of Auxiliary Pilot Channel influence among the power gain T2P with the relative pilot channel of corresponding service channel energy when the described bag of steps A.

Because method of the present invention is carried out special setting to RL MAC parameter, and utilizes these parameters to give out a contract for a project, thereby realize the mechanism of reverse dedicated line user, make that under the situation of data source abundance, this individual line subscriber can be stabilized in signatory bandwidth; Under the insufficient situation of data source, make this user can not assemble big bag, the waste resource; In an individual line subscriber is being contracted bandwidth, when carrying multiple business simultaneously, (AT accesses terminal this moment, Access Terminal) will be according to Access Network (AN, Access Network) banising the RL MAC attribute of putting for each dispatches, share signatory bandwidth, promptly embodied the priority (intra-user priority) in the individual line subscriber.The present invention can realize reverse flank speed and the reverse Mean Speed that the individual line subscriber enjoyment of different brackets is different.On the one hand, can satisfy different terminals user's demand; On the other hand, can provide service quality (QoS) solution of grade chargeable service, improve running income when meeting the needs of different users for Virtual network operator.

The present invention especially can provide reverse dedicated line user mechanism for CDMA2000EV-DO RevA system, make individual line subscriber relatively stable in signatory bandwidth in reverse speed, and be no more than under the prerequisite of signatory bandwidth, can carry any business, in signatory bandwidth, when having multiple business simultaneously, can keep the relative priority level of miscellaneous service.

Description of drawings

Fig. 1 is for utilizing the schematic diagram that leaks bucket memory cell Scheduling Flow;

Fig. 2 is the flow chart of the method for the invention;

Fig. 3 is the transmission schematic diagram of user data package;

The value schematic diagram of T2P when Fig. 4 is each PS transmission;

Fig. 5 is the different schematic diagrames that send packet constantly;

Fig. 6 is the coordinate system schematic diagram of BucketFactor function;

Fig. 7 is the base station of CDMA2000EV-DO RevA system and the schematic diagram of access terminal equipment;

Fig. 8 is for using the schematic diagram of method of the present invention choosing bag situation of individual line subscriber and domestic consumer when data source is sufficient;

Fig. 9 is for using the schematic diagram of method of the present invention choosing bag situation of individual line subscriber and domestic consumer when data source is inadequate.

Embodiment

Below by specific embodiments and the drawings the present invention is described in further details.

Method of the present invention realizes reverse user's special line mechanism based on RTC MAC subtype 3 agreements by adopting T2P to carry out rate controlled.

Fig. 2 is the flow chart of the method for the invention, and referring to Fig. 2, this flow process comprises:

Step 201, determine that the bag of reverse dedicated line user is long.

Be specially: the CAMEL-Subscription-Information of searching the user, signatory bandwidth and configuration mode according to the user, comprise high power capacity (HiCap, High Capacity) pattern and the low (LoLat that postpones, Low Latency) pattern is found the long PS of bag of the corresponding termination target of corresponding bandwidth and pattern in default reverse traffic channel speed and payload table.

Table 1 is depicted as reverse traffic channel speed and payload table, and the present invention directly utilizes the value in this table, but the calculating obtaining value method of this table is well known in the art, repeats no more herein.

Table 1

In RTC MAC subtype 3 agreements, adopt T2P to carry out rate controlled, each user's various flows is according to its T2P resource and current channel condition decision speed.For individual line subscriber, require under the condition of data resource abundance, speed is basicly stable in certain bandwidth.And under certain termination goal prerequisite, being provided with of power parameter make just reserved packet when stopping target by correct demodulation, then reverse rate is corresponding with the long PS of reserved packet, realize rate stabilization in certain bandwidth, just can be converted into to make that the bag of each scheduling is long constant.And different, for example the default configuration of agreement is low delayed mode to described termination target according to user model configuration difference, and it stops target is 2 frames; And the termination target of high power capacity pattern is 4 frames.

For example, the signatory bandwidth of an individual line subscriber is 450kbps, assumed average transmission duration is 2 frames, its configuration mode is low delayed mode, the termination target default value of this pattern is 2 frames, tabling look-up 1 obtains its corresponding Bao Changwei 6112, and acquiescence adds the redundant information of 32bit, its actual corresponding Bao Changwei 6144.

The minimum value (TxT2Pmin) of the power gain (TxT2P) of the relative pilot channel of Traffic Channel energy of step 202, definite emission and the span of maximum (TxT2Pmax); TxT2Pmin and TxT2Pmax are arranged in the described span.

Definite method of the span of described TxT2Pmin and TxT2Pmax is specially: under user's configuration mode, the described termination target of step 201 bag length before transfer point required T2P value as the minimum value of described span; High one grade of bag that the described termination target of step 201 bag is grown is grown the maximum of T2P value required before transfer point as described span.

Among the present invention, can be in advance with under each configuration mode, and the span of long pairing TxT2Pmin of each grade bag and TxT2Pmax is calculated, be stored in the table, when the span of TxT2Pmin that determines certain bag long (for example 6144) and TxT2Pmax, only need table look-up and to obtain, can improve treatment effeciency.For example: following table 2 is under LoLat pattern and the HiCap pattern, and each grade bag is long corresponding before transfer point and the T2P value after the transfer point.

Long (PS) unit of bag: bit	T2PHicapPreTr ansitonPS unit: dB	T2PHicapPost TransitonPS unit: dB	T2PLoLatPreT ransitonPS unit: dB	T2PLoLatPostTransi tonPS unit: dB
Long (PS) unit of bag: bit	T2PHicapPreTr ansitonPS unit: dB	T2PHicapPost TransitonPS unit: dB	T2PLoLatPreT ransitonPS unit: dB	T2PLoLatPostTransi tonPS unit: dB	128	0	0)	7.0	0.25
256	3.75	3.75	10.0	3.75	128	0	0)	7.0	0.25
256	3.75	3.75	10.0	3.75	512	7	7	13.0	7.0

768	8.75	8.75	14.75	8.75
768	8.75	8.75	14.75	8.75	1024	10	10	16.25	10.0
1536	11.5	11.5	18.25	11.5	1024	10	10	16.25	10.0
1536	11.5	11.5	18.25	11.5	2048	13	13	19.25	13.0
3072	14.25	14.25	19.25	14.25	2048	13	13	19.25	13.0
3072	14.25	14.25	19.25	14.25	4096	15.5	15.5	20.5	15.5
6144	17.0	17.0	21.75	17.0	4096	15.5	15.5	20.5	15.5
6144	17.0	17.0	21.75	17.0	8192	18.5	18.5	23.25	18.5
12288	21.5	21.5	26.25	21.25	8192	18.5	18.5	23.25	18.5

Table 2

The explanation that makes an explanation of following his-and-hers watches 2 related relevant parameters:

Fig. 3 is the transmission schematic diagram of user data package.Referring to Fig. 3, all allow emission at most four times for each packet PS (PS represents that bag is long), for each bag PS, the T2P when at every turn transmitting is different, the power that can be understood as transmission each time is different.The value schematic diagram of T2P when Fig. 4 is each PS transmission.Referring to Fig. 4, in the name of this variable of T2PHicapPreTransitonPS, T2P indicates that this variable is a T2P value, and can be understood as this is a performance number; Hicap indicates it is High Capacity pattern; PreTransition is illustrated in before the transfer point; PS represents that bag is long.T2PHicapPreTransitonPS links up and is exactly: under the High Capacity pattern, wrap the T2P of long PS before transfer point.

In like manner, the meaning of this variable of T2PHicapPostTransitonPS is exactly: under the High Capacity pattern, wrap the T2P of long PS after transfer point.Described transfer point, when giving out a contract for a project exactly, transmission that time that T2P changes.In Fig. 4, transfer point is 2, because when transmitting for the second time, variation has taken place the T2P that gives out a contract for a project.

T2PHicapPreTransitonPS and T2PHicapPostTransitonPS are known, for every kind of long PS of bag, so one group of data are arranged all.As shown in table 2.

Table 3 is the span table of TxT2Pmin and TxT2Pmax.

Packet_Size(bits)	Range(HC mode)(dB)	Range(LL mode)(dB)
Packet_Size(bits)	Range(HC mode)(dB)	Range(LL mode)(dB)	128	[0，3.75)	[7，10)

256	[3.75，7)	[10，13)
256	[3.75，7)	[10，13)	512	[7，8.75)	[13，14.75)
768	[8.75，10)	[14.75，16.25)	512	[7，8.75)	[13，14.75)
768	[8.75，10)	[14.75，16.25)	1024	[10，11.5)	[16.25，18.25)
1536	[11.5，13)	[18.25，19.25)	1024	[10，11.5)	[16.25，18.25)
1536	[11.5，13)	[18.25，19.25)	2048	[13，14.51573)	[19.25，19.51573)
3072	[14.51573，15.76573)	[19.51573，20.76573)	2048	[13，14.51573)	[19.25，19.51573)
3072	[14.51573，15.76573)	[19.51573，20.76573)	4096	[15.76573，17.26573)	[20.76573，22.01573)
6144	[17.26573，18.76573)	[22.01573，23.51573)	4096	[15.76573，17.26573)	[20.76573，22.01573)
6144	[17.26573，18.76573)	[22.01573，23.51573)	8192	[18.76573，21.51573)	[23.51573，26.51573)
12288	[21.51573，+∞)	[26.51573，∞)	8192	[18.76573，21.51573)	[23.51573，26.51573)

Table 3

Value in the table 3 can be according to the T2PLoLatPreTransitionPS described in the table 2, T2PLoLatPostTransitionPS, and T2PHicapPreTransitionPS, and T2PHicapPostTransitionPS calculates.

Consider Auxiliary Pilot Channel (AuxiliaryPilotgain), can preestablish the parcel long (AuxiliaryPilotChannelMinPayload) that has Auxiliary Pilot Channel, suppose AuxiliaryPilotChannelMinPayload=3072, so when send bag is grown up when equaling 3072, the value that then will wrap the T2P of long correspondence adds the power influences of AuxiliaryPilotgain, for example is 0.26573DB herein; When the bag length that is sent less than 3072 the time, then do not increase the influence of AuxiliaryPilotgain.

Illustrate the computational process of numerical value in the described table 3 below.Long for bag less than 3072, for example the lvalue of the span Range (HC mode) under the High Capacity pattern of table 3 first row is the T2PHicapPreTransitonPS of minimum value 0 for bag in the table 2 long 128, r value is that maximum is 3.75, is the T2PHicapPreTransitonPS of bag in the table 2 long 256; The lvalue 7 of the span Range (LL mode) of the first row LoLat pattern in the table 3 is the T2PLoLatPreTransitonPS of bag in the table 2 long 128, and r value 3.75 is the T2PLoLatPreTransitonPS of bag in the table 2 long 256; In the table 3 other are grown less than 3072 bag: for example the lvalue 7 of the span Range (HC mode) of the HiCap pattern of bag long 512 is the T2PHicapPreTransitonPS of bag in the table 2 long 512, and r value 8.75 be the T2PHicapPreTransitonPS of bag length 768 in the table 2.

Grow up in 3072 for bag, for example 6144 wrap long these delegation, the lvalue 17.26573 of the span Range of its HiCap pattern (HC mode) is added the performance number 0.26573 that AuxiliaryPilotgain influences for the T2PHicapPreTransitonPS 17.0 of bag in the table 2 long 6144; R value 18.76573 adds 0.26573 for the T2PHicapPreTransitonPS18.5 of bag in the table 2 long 8192, and the lvalue of the span Range (LL mode) of the LoLat pattern of bag long 6144 is that the T2PLoLatPreTransitonPS 21.75 of bag long 6144 in the table 2 adds 0.26573; R value is that the T2PLoLatPreTransitonPS 23.25 of bag long 8192 in the table 2 adds 0.26573.Other bags greater than 3072 are grown.

In step 202, can be according to the long PS of the bag that obtains of step 201, from table 3, find the scope of TxT2Pmin and TxT2Pmax, such as [T2Prange1, T2Prange2), wherein T2Prange1 is a lvalue, and T2Prange2 is a r value, TxT2Pmin＞=T2Prange1 is set, TxT2Pmax＜T2Prange2.Suppose PS=6144 herein, and be the LoLat pattern, TxT2Pmin＞=22.01573 then, TxT2Pmax＜23.51573.Because TxT2Pmax is the function of pilot frequency intensity (pilotstrength),, the basic interpolation point of T2Pmax can be arranged in the span of TxT2Pmin and TxT2Pmax, promptly make it weak relevant, even not relevant here with pilot strength.

Step 203, the current permission bag that sends packet long (PermittedPayloadPS) is set to more than or equal to the long PS of the determined bag of step 201 (for example 6144), according to the long reserved packet of organizing of described permission bag.

The bag of three packets that permission Bao Changwei herein sent before current data packet is long, be respectively: PermittedPayloadPS1_1, PermittedPayloadPS2_2, PermittedPayloadPS3_3, the value that PermittedPayloadPS1_1, PermittedPayloadPS2_2, PermittedPayloadPS3_3 be set is more than or equal to PS (for example 6144).

Step 204, send the reserved packet organized according to set TxT2Pmin, TxT2Pmax.

If make the individual line subscriber reverse rate be stabilized in signatory bandwidth, the minimum value (T2PInflow min) of injecting the T2P resource of leaking the bucket memory cell then also need be set, make T2Plnflow min＞T2Prange1.Be issued to signatory bandwidth if just wish individual line subscriber in the condition that channel condition allows, then do not need T2PInflow min is carried out special setting.

When an individual line subscriber in the special line bandwidth, when carrying multiple business simultaneously, AT will banish the RL MAC attribute of putting for each according to AN and dispatch this moment, share signatory bandwidth, promptly embody the interior priority (intra-user priority) of individual line subscriber.

Above implementation step, by to TxT2Pmin, TxT2Pmax and T2PInflow min, PermittedPayload rationally is provided with, and can realize reverse dedicated line user mechanism, comprising:

1), under the situation of data source abundance, this individual line subscriber can be stabilized in signatory bandwidth.

2), under the insufficient situation of data source, make this user can not assemble big bag, the waste resource.

3), owing to the present invention is based on the agreement of RL MAC, therefore can also work as an individual line subscriber when in the bandwidth of contracting, carrying multiple business simultaneously, AT will banish the RL MAC attribute of putting for each according to AN and dispatch, share signatory bandwidth, promptly embodied the priority (intra-userpriority) in the individual line subscriber.

The two kinds of functions in back are that the T2P algorithm that RTC MAC subtype3 is provided can guarantee.

The present invention also can only realize reverse fixed rate, rather than realizes complete dedicated line user mechanism.That is to say, the renewal of T2Plnflow is to be undertaken by the growth step-length (T2Pup) of T2P and two functions of decline step-length (T2Pdown), therefore these two functions can be set makes T2PInflow constant, thereby obtain PotentialT2POutflowi＞=T2Prange1, be equivalent to T2PInflow min＞T2Prange1, also can realize reverse fixed rate.Always greater than T2Prange1, and the output perseverance of T2Pdown is zero such as the output that T2Pup is set.

RTCMAC subtype3 agreement provides two and the pattern of back scheduling, a kind of is substep rate selection (the distributed rate selection) pattern of terminal, what the foregoing description adopted is exactly this pattern, another kind is concentrating/predetermined resource distribution (centralized/scheduled resourceallocation) pattern of base station end, and the present invention also can adopt this pattern.The present invention is by sending out grant message to terminal, specify F2Plnflow, BucketLevel and TT2PHold (TT2PHold, refer to parameter T2PInflow, BucketLevel can continuous action time), as long as this Several Parameters is adjusted in order, make PotentialT2POutflowi＞=T2Prange1 get final product, the computational methods of PotentialT2POutflowi provide in front, the method that realizes has a variety of, is 1 such as the function output valve perseverance that BucketFactor is set, and makes BucketLevel=T2Prange1, T2PInflow=T2Prange1, the TT2PHold=infinity.

Below demonstration can realize the principle of reverse dedicated line user mechanism by above-mentioned steps.

1, under the situation of data source abundance, for the signatory bandwidth that makes the user keeps stable, need prevent that the ripple of power from deciding effect, promptly need to satisfy and select the long condition 1 of bag among the existing protocol CS0024, promptly formula 1):

PS≤min(PermittedPayloadPS1_1，PermittedPayloadPS2_2，

PermittedPayloadPS3_3)

Above-mentioned formula has guaranteed that bag that preceding 3 moment of the Bao Changyu of packet that current time is sent out send out is long and can not differ too big.Fig. 5 is the different schematic diagrames that send packet constantly.Referring to Fig. 5, PS represents that the bag that current time (be assumed to be constantly n) will send is long, the Bao Changwei PS3 that n-3 sends out constantly, and the bag that n sends out constantly is long must be satisfied: PS≤PermittedPayloadPS3-3; The Bao Changwei PS2 that n-2 sends out constantly, the bag that n sends out constantly is long must to be satisfied: PS≤PermittedPayloadPS2-2; The Bao Changwei PS1 that n-1 sends out constantly, the bag that n sends out constantly is long must to be satisfied: PS≤PermittedPayloadPS1-1.

Comprehensive above condition, described PS will satisfy: PS≤PermittedPayloadPS3-3 and PS≤PermittedPayloadPS2-2 and PS≤PermittedPayloadPS1-1.Also just be equivalent to:

PS≤min(PermittedPayloadPS1-1，PS＜PermittedPayloadPS2-2，PS＜PermittedPayloadPS3-3)。

Owing to find from table 1, present PS need satisfy: just there is following formula PS＞6144:

6144＜PS≤min(PermittedPayloadPS1-1，PS＜PermittedPayloadPS2-2，PS＜PermittedPayloadPS3-3)

Therefore have: min (PermittedPayloadPS1-1, PS＜PermittedPayloadPS2-2, PS＜PermittedPayloadPS3-3)＞6144.

2, send out big bag in order to have guaranteed as far as possible, TxT2Pmin is provided with, and TxT2Pmin makes the user work as the PotentialT2POutlow sum of each stream when not high, also can assemble bigger bag, promptly need satisfy the condition 2 of decision bag size among the CS0024, i.e. formula (2):

10^(TxT2PLoLatNominalPS/10)≤

max(10^(TxT2P _min/10)，∑ _i∈F(PotentialT2POutflow _i，LL))

In the formula (2), and described TxT2PLoLatNorminalPS=max (T2PLoLatPreTransitonPS, T2PLoLatPostTransitonPS); That is to say: TxT2PHicapNorminalPS is in four transmission of the long PS of bag, maximum T2P value.As can see from Figure 4, during Bao Changwei 6144, TxT2PLoLatNorminalPS=max (T2PLoLatPreTransitonPS, T2PLoLatPostTransitonPS)=max (21.75,17.0)=21.75; Because wrap long 6144 greater than 3072, so in fact,

TxT2PLoLatNorminalPS＝21.75+0.26573＝22.01573。

Can obtain 22.01573≤max{10^ (TxT2P according to formula (2) _Min/ 10), ∑ _{I ∈ F}(PotentialT2POutflow _{I, LL})), so TxT2Pmin＞=22.01573; The left end value that is the TxT2Pmin span is 22.01573.

3, T2Pmax has then controlled the upper limit of user traffic channel power, i.e. the condition 3 of decision bag size among the CS0024:

If PS＜AuxiliaryPilotChannelMinPayload (for example 3072), then need satisfy: max (10^ (T2PLoLatPreTransitionPS/10), 10^ (T2PLoLatPostTransitionPS/10))≤10^ (T2Pmax (PilotStrength _{N, s})/10).Wherein, PilotStrengthn, s are pilot frequency intensity.Subscript n is represented the n frame, can be understood as n constantly, and s represents the sector.TxT2Pmax is the function of pilot frequency intensity,, the basic interpolation point of T2Pmax can be provided with to such an extent that belong to all that [T2Prange1 T2Prange2), promptly makes it and pilot strength weak relevant, even not relevant here.

If PS 〉=AuxiliaryPilotChannelMinPayload, then need satisfy: (1+10^ (AuxiliaryPilotChannelGain/10)) * max (10^ (T2PLoLatPreTransitionPS/10), 10^ (T2PLoLatPostTransitionPS/10))≤10^ (TxT2Pmax (PilotStrength _{N, s})/10).

Wherein AuxiliaryPilotChannelGain is 0.26573.

Because PS is 6144 in the example herein, greater than 3072, so calculate T2Pmax less than 23.51573dB according to the requirement of condition 3.

Condition 2 and condition 3 are leading factor of decision bag size.In this example, under the situation of data source abundance, be the span of TxT2Pmin and T2Pmax as long as TxT2Pmin and T2Pmax are configured in the belt-like zone of 23.01573dB suitably, this individual line subscriber can be stabilized in about signatory bandwidth 460.8kbps.

4, under the insufficient situation of data source, the VoIP business of having only 8K such as this user at present, average bandwidth is no more than 10kbps, this moment is in order to make this user can not assemble big bag so, the waste resource, need to satisfy the principle of parcel, promptly the Yi Xia condition 4:T2P bag that is lower than TxT2PLoLatNominalPS can not transmit (No packet with lowerTxT2PLoLatNominalPS is able to carry a payload of size as specified by thefollowing equation) with the long group bag of the bag that following formula was calculated:

∑ _i∈F min(d _i，n，T2PConversionFactor _LL×

PotentialT2POutflow _i，LL)

Wherein, the subscript LL of T2PConversionFactorLL represents Low Latency pattern, and this argument table is shown under Low Latency pattern, is converted to the conversion factor of wrapping long PS, that is: T2PConversionFactorLL=PS/T2P from T2P _PS. the meaning is exactly, if T2P=a, the corresponding bag length of this value is a*T2PConversionFactorLL so.Described PotentialT2POutflowi, subscript i represents i stream among the LL, and LL represents Low Latency pattern, and this variable is represented current utilizable T2P resource referring to shown in Figure 1.

Above-mentioned formulate will decide each stream shared proportion in bag by the size of the data of each stream.

But 5 conditions 4 also require the described PotentialT2POutflowi can not be too little, otherwise the bag of assembling can not comprise the data in the existing formation as far as possible.

And PotentialT2POutflowi is calculated by following formula:

PotentialT2POutflowi，LL＝max(0，min((1+AllocationStagger×rn)×(BucketLeveli，n/4+T2PInflowi，n)，BucketFactori(10×log10(T2PInflowi，n)，FRABn)×T2PInflowi，n))

In the following formula, AllocationStagger is a constant between 0～1, and rn is a random number between-1～1, and the purpose of these two variablees is to introduce some randomnesss to algorithm.BucketLeveli, n sees also shown in Figure 1ly, and wherein subscript i represents i stream, and n represents n constantly.T2PInflowi, n also see also shown in Figure 1, and wherein subscript i represents i stream, and n represents n constantly.BucketFactori represents the BucketFactor function of i stream, and this function is a two-dimensional function, and relevant with two variablees of FRAB with T2P, the coordinate system of function is shown in Figure 6.

Because general initial T2PInflowi, n is set to T2PInflow min, if individual line subscriber is with bigger bag long hair bag, T2POutflowi, n will be much larger than T2PInflowi, n, so BucketLeveli, n can be negative value, PotentialT2POutflowi just might be zero, therefore need to guarantee BucketLeveli, n is greater than zero, that is to say to make T2PInflowi, n is slightly larger than T2POutflowi, n, therefore, T2PInflow min need be set be slightly larger than T2POutflowi, n.If T2PInflowmin is not carried out special setting, still adopt default configuration 1.75dB, it is long that then this user will intermittently choose the bag of 6144bits, though can not guarantee the user like this continues with constant speed rates digit rate, but can be under the good condition of channel condition, the data volume that disposable transmission is big, this has also embodied user's priority.

By above-mentioned argumentation as can be known, method of the present invention has satisfied required above-mentioned five conditions of reverse dedicated line user mechanism, therefore can realize reverse dedicated line user mechanism.

Method of the present invention can be applied to CDMA2000EV-DO RevA system.Fig. 7 is the base station of CDMA2000EV-DO RevA system and the schematic diagram of access terminal equipment.Referring to Fig. 7, the RL MAC parameter that the method for the invention disposed, for example TxT2Pmin, TxT2Pmax, PermittedPayload and T2PInflow min calculate configuration in described base station operation maintenance centre; By the base station operation maintenance centre, the parameter that obtains is assigned configuration by the data configuration module; The data configuration module sends to the parameter of configuration the main signaling processing module at base station software center; Main signaling processing module sends to AT to relevant parameter by space interface signaling message; After AT obtains relevant parameters, these parameters are applied to RL MAC scheduling mechanism, to reach the signatory bandwidth of corresponding individual line subscriber.

Below provide the simulation result that adopts after the method for the invention.The condition of emulation is: 19 base stations (BTS), and 57 sectors (Sector), 10 users of each Sector, or 20 users etc., an individual line subscriber is arranged in the whole system, stream of each user, transmission mode is the Hicap pattern.Suppose that No. 5 AT is individual line subscriber, it is provided with as preceding institute is carried, and other of this user are set to the default setting of C.S0024, and the setting of all non-individual line subscribers is default setting.

The schematic diagram of the choosing bag situation of individual line subscriber and domestic consumer when Fig. 8 is the data source abundance.Fig. 9 is the schematic diagram of data source choosing bag situation of individual line subscriber and domestic consumer when inadequate.Wherein, abscissa is the time, and total coordinate is that bag is long.Among Fig. 8, the bag of the scheduling 6144bits that individual line subscriber can continue, and domestic consumer can only choose the bag of 256bits.Being noted that the present invention is actually has shielded the influence of reverse activity factor bit (RAB, the expression base station is busy or not busy) to the individual line subscriber scheduling, very big to the stability influence of system.The quantity of the individual line subscriber of therefore also must strict each carrier frequency of control opening an account advises that each carrier frequency only allows an individual line subscriber to exist.When Fig. 9 is individual line subscriber data resource deficiency, the choosing bag situation of individual line subscriber and domestic consumer (, only having drawn 50 suframe here) in order to see clearly Chu.Can see, during data deficiencies, will select parcel, when not having data, will not give out a contract for a project.

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.

Claims

1, in a kind of communication system in the method that oppositely realizes dedicated line user mechanism, it is characterized in that this method comprises:

D, send the reserved packet organized according to set TxT2Pmin, TxT2Pmax.

2, method according to claim 1, it is characterized in that, described steps A specifically comprises: search the CAMEL-Subscription-Information of reverse dedicated line user, the bag of corresponding termination target of finding corresponding bandwidth and pattern according to user's signatory bandwidth and configuration mode in default reverse traffic channel speed and payload table is long.

3, method according to claim 1 is characterized in that, definite method of the TxT2Pmin of step B and the span of TxT2Pmax is:

4, method according to claim 3 is characterized in that, described TxT2Pmin is set to the left end value more than or equal to described span; Described TxT2Pmax is set to the right-hand member value less than described span.

5, method according to claim 3 is characterized in that, further comprises: the value of the basic interpolation point of T2Pmax is arranged in the span of described TxT2Pmin and TxT2Pmax.

6, method according to claim 1, it is characterized in that, the minimum value of the Bao Changzhong of three packets that the described permission of step C Bao Changwei sent before current data packet, the minimum value of the Bao Changzhong of these three packets is set to more than or equal to the determined bag of steps A long.

7, method according to claim 1, it is characterized in that, the minimum value T2PInflow min of the power gain T2P resource of the relative pilot channel of Traffic Channel energy of injection leakage bucket memory cell is set to the minimum value greater than the described span of step B, provide T2P resource according to T2PInflow min for reserved packet, described leakage bucket memory cell is the available T2P resource of described reverse dedicated line user stream storage.

8, method according to claim 7 is characterized in that, realizes the minimum value of T2PInflow min greater than the described span of step B by growth step-length T2Pup function and decline step-length T2Pdown function that T2P is set.

9, method according to claim 1, it is characterized in that, the power gain T2P resource PotentialT2POutflow of the relative pilot channel of potential Traffic Channel energy that current reserved packet can obtain from leak the bucket memory cell is set to the minimum value more than or equal to the described span of step B, for described reserved packet provides T2P resource, described leakage bucket memory cell is the available T2P resource of described reverse dedicated line user stream storage.

10, method according to claim 9, it is characterized in that, inject the described power gain T2P resource T2PInflow that leaks the relative pilot channel of Traffic Channel energy of bucket memory cell by being provided with, the current T2P stock number BucketLevel that accumulates of described leakage bucket memory cell, and T2PInflow and BucketLevel can continuous action time T T2PHold, realize the minimum value of PotentialT2POutflow more than or equal to the described span of step B.

11, according to each described method of claim 1 to 10, it is characterized in that, grow up when the default parcel that has an Auxiliary Pilot Channel is long when the described bag of steps A, then add the performance number of Auxiliary Pilot Channel influence among the power gain T2P with the relative pilot channel of corresponding service channel energy.