CN101282190A - Method for multiplexing scheduling and non-scheduling service transmission in high speed upstream packet access - Google Patents

Abstract

The present invention discloses a method for transmitting and multiplexing the scheduling and non-scheduling services in a high speed uplink packet access. A resource unit RU is used for normalizing all possible scheduling and non-scheduling resources, and divides the resources to N resource grades. Each resource grade is configured with I TBS values to establish an N*I TBS resource table. In multiplexing, the gross amount scheduling and non-scheduling resources allocated by a node B and an SRNC is calculated. When the corresponding resource grade is searched, a TBS value is selected from the TBS resource table wherein according to the authorization of power. The invention selects a transmission block size TBS in multiplexing scheduling and non-scheduling services which has different spread-spectrum factors SF and time slots. Not only the wastage of the non-scheduling physical resource is avoided but also the existing signaling structure is not changed.

Description

Scheduling and the multiplexing method of non-scheduling service transmission during high speed uplink packet inserts

Technical field

The present invention relates to wireless telecommunication system, particularly relate to TD SDMA and insert in the wireless telecommunication system, scheduling of the MAC layer of HSUPA (high speed uplink packet access) and the multiplexing realization of non-scheduling service transmission.

Background technology

In 3-G (Generation Three mobile communication system), for the upstream packet business of higher rate is provided, improve spectrum utilization efficiency, 3GPP (3rd Generation Partnership Project) has introduced high speed uplink packet access (HSUPA in the standard of WCDMA and TD-CDMA system, High SpeedUplink Packet Access) characteristic, promptly up enhancing characteristic.

The HSUPA system ascending reinforcement system that is otherwise known as abbreviates the E-DCH system as.In the TD-CDMA system, the HSUPA system physical layer is introduced the E-PUCH physical channel, is used to transmit the CCTrCH (coded composite transport channel) of E-DCH type.

There are two kinds of business among the HSUPA: dispatching services and non-scheduling service.Dispatching services is to distribute code channel, time slot and power resource by Node B (NodeB); And non-scheduling service comes Resources allocation by service wireless network controller (SRNC).Non-scheduling resource generally is to occur in the cycle, therefore, when the data volume of having distributed non-scheduling resource but not have non-scheduling service or a non-scheduling service very hour, if utilize unnecessary non-scheduling resource transmitting and scheduling business can farthest avoid the wasting of resources.Here it is the scheduling and the meaning of non-dispatching multiplex.

Scheduling and non-scheduling are merged into a TBS (Transport Block Size: the transmission block size) transmit multiplexing being meant of MAC layer with the data of scheduling and non-scheduling service in the MAC layer, in physical layer, this multiplexing TBS is carried out unified CRC (cyclic redundancy check (CRC)) verification and coding and decoding, therefore the data mixing of scheduling and non-scheduling service is transmitted together, and is indivisible.

In the prior art, dispatching services and non-scheduling service be transmission separately, because the SF (spreading factor) that scheduling and non-scheduling resource use possibility is different, and the timeslot number difference, thus cause the waste of resource.

Summary of the invention

Technical problem to be solved by this invention is, scheduling and the multiplexing method of non-scheduling service transmission among a kind of HSUPA are provided, when the scheduling with different spreading factor SF, different time-gap and non-scheduling service are multiplexing, choose a transmission block size TBS, avoid the waste of non-scheduling physical resource, do not change existing signaling structure simultaneously again.

For addressing the above problem, the invention provides scheduling and the multiplexing method of non-scheduling service transmission in the high speed uplink packet access, comprise the steps:

(1) basic resources unit is set, calculates scheduling and the possible altogether code channel time interval resource quantity C of non-scheduling,, be divided into N the mode of possible total resources C according to the normalization equivalence according to Resource Unit normalization _NumberIndividual hierarchical resource;

(2) the minimum and maximum TBS value in each hierarchical resource in the calculation procedure (1) is determined I TBS value having in each grade to obtain a N _NumberThe TBS resource table of * I;

(3) when scheduling and non-scheduling service exists simultaneously and the non-scheduling service data volume can be carried less than the Radio Resource that disposes bit number, the MAC layer determines to adopt non-scheduled transmission, it is multiplexing to be about to the transmission of scheduling and non-scheduling service, and is obtained the scheduling and the non-scheduling resource amount of actual allocated by Node B and service wireless network controller SRNC;

(4) scheduling and the non-scheduling resource amount of the reality of distributing respectively according to Node B and service wireless network controller SRNC are calculated the basic resources number that scheduling and non-scheduling resource occupy altogether;

(5) the basic resources number that is occupied altogether by step (4) resulting scheduling of calculating and non-scheduling resource judges which grade the total resources of distribution has dropped in, and the N that is mentioned in step (2) _NumberSeek corresponding TBS in the TBS resource table of * I.

Further, said method also has following characteristics:

In the step (1):

Described basic resources unit is the solid size road of spreading factor SF=16; Described possible altogether code channel time interval resource quantity X is 1 to 80 Resource Unit; Described hierarchical resource number N _NumberCan be divided exactly by 80.

Further, said method also has following characteristics:

In the step (2):

The bit number 23 that minimum TBS value in described each hierarchical resource is a schedule information;

Maximum TBS value in described each hierarchical resource is the maximum number bits that corresponding spreading factor SF=1, modulation system may be transmitted during for 16QAM, satisfies following formula for maximum TBS value in N the hierarchical resource:

$\frac{\mathrm{TBS}/M\×\mathrm{SF}}{704-17\×\mathrm{ENI}\×\mathrm{SF}-(24+\mathrm{ceil}((\mathrm{TBS}+24)/5114)\×4)/M\×\mathrm{SF}+704\×(t-1)}=1$

Wherein, 24 correspondences be the number of CRC check bit, 4 correspondences be Turbo coding and the tail bit that carries over through punching, ceil is the number that rounds up, t is a timeslot number, ENI is for using the number of E-UCCH, M is the value of modulation system correspondence, when adopting the QPSK modulation system, and M=2, when adopting the 16QAM modulation system, M=4;

Further, said method also has following characteristics:

In the step (2):

I the TBS value that has in described definite each grade, its specific implementation is as follows:

In the log-domain space, between the minimum and maximum TBS value of above-mentioned gained, evenly insert I-2 TBS value, promptly TBS maximum and minimum value are taken the logarithm, in the log-domain space with even I-2 logarithm TBS value between the minimum and maximum TBS value of being taken the logarithm, again the TBS logarithm value of inserting is converted to corresponding TBS numerical value, thereby obtains I TBS value.

Further, said method also has following characteristics:

In the step (4):

Calculate the scheduling and the non-scheduling resource total amount of actual allocated:

$\mathrm{RU\; number}=\frac{16}{{\mathrm{SF}}_{\mathrm{schedular}}}\×N\_{\mathrm{TS}}_{\mathrm{schedular}}+\frac{16}{{\mathrm{SF}}_{\mathrm{non\; schedular}}}\×{N\_\mathrm{TS}}_{\mathrm{non\; schedular}}$

Wherein, SF _Scheduler, SF _NonschedularBe respectively the spreading factor SF of scheduling resource, non-scheduling resource;

N-TS _Scheduler, N-TS _NonschedulerBe respectively the timeslot number of scheduling resource, non-scheduling resource.

Further, said method also has following characteristics:

In the step (5):

(5a) at first, scheduling and the non-scheduling resource total amount RU according to the calculating actual allocated described in the step (4) judges which grade it has dropped in;

(5b) secondly, the N that in step (2), is mentioned _NumberFind I TBS value of this grade correspondence in the TBS resource table of * I;

(5c) once more, according to I the TBS value of step 5b gained and the RU of step 5a gained _Number, calculate I code check, and I power of a corresponding I code check;

(5d) last, because respectively corresponding power mandate of nodeB and SRNC, select minimal power mandate R among both, in step 5c, select in the resulting I power less than and near the power of R, be exactly the TBS value of the correspondence that will obtain corresponding to the TBS that obtains this power.

By said method as can be seen, the present invention proposes TBS configuration and system of selection that the adaptation multiplex data transmits on different resource, when scheduling drops on different grades with the summation of non-scheduling resource, the optional value of then corresponding different TBS.Adopt method proposed by the invention, help scheduling, TBS selects behind the non-dispatching multiplex, its objective is in order to dispatch the non-scheduling resource integration method, and find a kind of support scheduling, the TBS dividing mode of non-dispatching multiplex, can be to having different SF, choose a TBS when scheduling of different time-gap and non-scheduling service are multiplexing, avoided the waste of physical channel resources, also needn't change existing signaling structure simultaneously.

Description of drawings

Fig. 1 is that HSUPA scheduling and the non-scheduling service of TD-SCDMA system among the present invention is at the multiplexing schematic diagram of MAC layer;

Fig. 2 is a flow chart of setting up the TBS resource table among the present invention at MAC;

Fig. 3 seeks corresponding TBS to be worth flow chart among the present invention.

Embodiment

Below in conjunction with drawings and the specific embodiments technical solution of the present invention is described in further detail.

In order to realize the object of the invention, scheduling and non-scheduling resource are carried out multiplexing, make various resources effectively to utilize, need dispatch non-dispatching multiplex, wherein, the key technology for being selected to of TBS in multiplexing.

As shown in Figure 1, the HSUPA scheduling that has shown the TD-SCDMA system and non-scheduling service are in the multiplexing principle of MAC layer.When scheduling and non-scheduling service when existing simultaneously, they have carried out multiplexing at the MAC layer.Multiplexing notion is meant the layer at MAC, and both are blended among the TBS transmits.In physical layer, TBS had both used scheduling resource, had also used non-scheduling resource.

Scheduling and the multiplexing method of non-scheduling service transmission during high speed uplink packet inserts may further comprise the steps:

Step 1: basic resources unit is set, calculates scheduling and the possible altogether code channel time interval resource quantity C of non-scheduling,, be divided into N with the mode of possible total resources C according to the normalization equivalence according to Resource Unit normalization _NumberIndividual hierarchical resource, N _NumberCan be divided exactly by 80,

Step 2: minimum and maximum TBS value in each hierarchical resource in the calculation procedure (1), and I the optional value of TBS that has in definite each grade obtain a N at the MAC layer _NumberThe TBS resource table of * I;

Step 3: when scheduling and non-scheduling service when existing simultaneously and the non-scheduling service data volume can carry less than the Radio Resource of configuration bit number the time, the non-scheduled transmission of the definite employing of MAC layer promptly need be transmitted scheduling and non-scheduling service multiplexing;

If non-scheduling service is arranged, whether no matter dispatching services arranged, then be referred to as non-scheduled transmission, use the Process ID and the E-HICH channel of non-scheduling; If have only dispatching services, then be referred to as scheduled transmission, use the Process ID and the E-HICH channel of scheduling.

Step 4: the scheduling of the reality of distributing respectively according to nodeB and SRNC and the SF and the timeslot number of non-scheduling resource, it is several to calculate the basic RU (resource units) that scheduling and non-scheduling resource occupied altogether, and formula is as follows:

$\mathrm{RU\; number}=\frac{16}{{\mathrm{SF}}_{\mathrm{schedular}}}\×N\_{\mathrm{TS}}_{\mathrm{schedular}}+\frac{16}{{\mathrm{SF}}_{\mathrm{non\; schedular}}}\×{N\_\mathrm{TS}}_{\mathrm{non\; schedular}}$

Wherein, SF _Scheduler, SF _NonschedularBe respectively the spreading factor SF of scheduling resource, non-scheduling resource;

N-TS _Scheduler, N-TS _NonschedulerBe respectively the timeslot number of scheduling resource, non-scheduling resource.

Step 5: judge that by the basic RU number of the reality of step 4 gained which grade X the total resources that distributes drops among, and in table, seek suitable TBS in the corresponding row.

In described step 1, the described basic resources unit that is provided with in the present embodiment, is defined as basic resource units (RU) with the solid size road of SF=16.

Described calculating scheduling and the possible altogether code channel time interval resource quantity C of non-scheduling obtain in the following manner:

Because the resource that scheduling and non-scheduling take altogether is at most the full code channel of 5 time slots, minimum is the code channel of a SF=16 of single time slot, be that the possible altogether code channel time interval resource quantity C of described scheduling and non-scheduling takies 80 basic RU at most, minimum takies 1 basic RU.

Described N _NumberIndividual hierarchical resource, in the present embodiment, N _Number=5.

In described step 2, describedly obtain a N at the MAC layer _NumberThe TBS resource table of * I, its specific implementation as shown in Figure 2, Fig. 2 is a flow chart of setting up the TBS resource table among the present invention at MAC.Comprise the steps:

(200): according to basic resources unit and the possible code channel time interval resource quantity C that determines and the N that is divided of above-mentioned steps 1 setting _NumberIndividual hierarchical resource designs each hierarchical resource optional value of a corresponding T TBS respectively.

N=5 in the present embodiment, I=32,

1～16 RU of correspondence during N=1 (corresponding the first estate); 17～32 RU of correspondence during N=2 (corresponding second grade); 33～48 RU of correspondence during N=3 (the corresponding tertiary gradient); 49～64 RU of correspondence during N=4 (the corresponding fourth estate); 65～80 RU of correspondence during N=5 (corresponding the 5th grade).

(201):, determine maximum TBS value and minimum TBS value in each grade at each hierarchical resource.

What the minimum value of described TBS was got is the bit number 23 of schedule information;

The maximum number bits that the maximum of described TBS should corresponding SF=1, modulation system may be transmitted during for 16QAM, therefore, the maximum of TBS satisfies following formula in N hierarchical resource as can be seen:

$\frac{\mathrm{TBS}/M\×\mathrm{SF}}{704-17\×\mathrm{ENI}\×\mathrm{SF}-(24+\mathrm{ceil}((\mathrm{TBS}+24)/5114)\×4)/M\×\mathrm{SF}+704\×(t-1)}=1$

Wherein, 24 correspondences be the number of CRC check bit, 4 correspondences be Turbo coding and the tail bit that carries over through punching, ceil is the number that rounds up, t is a timeslot number, ENI is for using the number of E-UCCH, M is the value of modulation system correspondence, when adopting the QPSK modulation system, and M=2, when adopting the 16QAM modulation system, M=4;

Can obtain the maximum of TBS in N the different resource grade by following formula:

When N=1, TBSmax=2720;

When N=2, TBSmax=5532;

When N=3, TBSmax=8348;

When N=4, TBSmax=11160;

When N=5, TBSmax=13976.

(202) determined TBS maximum and minimum value in each hierarchical resource after, public technology document " Ericsson.R1-02-DRAFT; Signaling of Transport BlockSizes for HS-DSCH " according to Ericsson, for guaranteeing to reduce the length of the padding under the worst case, must guarantee that TBS evenly distributes in log-domain, according to 32 TBS in each hierarchical resource in this principle design HSUPA system, promptly earlier TBS maximum and minimum value are taken the logarithm, in the log-domain space, some logarithm TBS values will be inserted evenly between the minimum and maximum TBS value of being taken the logarithm, again the TBS logarithm value of inserting is converted to corresponding TBS numerical value, has so just obtained TBS resource table as shown in table 1.

By above step, we can obtain might resource situation under corresponding TBS resource table, as shown in table 1:

TBS when table 1:HSUPA MAC is multiplexing under the different resource unit

INDEX	N＝1	N＝2	N＝3	N＝4	N＝5
						0	23	23	23	23	23
1	27	27	28	28	28
						2	31	33	34	34	35
3	37	39	41	42	43
						4	43	47	49	51	53
5	50	56	60	62	65
						6	58	66	72	76	80

7	68	79	87	93	98
						8	79	95	105	113	120
9	92	113	127	139	148
						10	107	135	154	169	182
11	125	161	186	206	224
						12	146	192	225	252	275
13	170	229	272	308	338
						14	199	274	329	376	416
15	232	327	398	459	511
						16	270	390	482	560	629
17	315	465	583	683	773
						18	368	555	705	834	951
19	429	662	852	1018	1169
						20	500	791	1031	1243	1438
21	583	944	1247	1518	1768
						22	680	1126	1508	1853	2174
23	794	1344	1824	2262	2673
						24	926	1604	2206	2762	3287
25	1080	1914	2668	3371	4042
						26	1260	2285	3226	4116	4971
27	1469	2727	3902	5024	6112
						28	1714	3254	4719	6134	7516
29	1999	3884	5707	7488	9243
						30	2332	4635	6903	9142	11365
31	2720	5532	8348	11160	13976

In the TBS resource table shown in the table 1, first classifies the TBS index value as, and value is 0～31, respectively corresponding 5 hierarchical resources of secondary series to the six row.

The step of in described step 5, seeking corresponding TBS as shown in Figure 3, Fig. 3 seeks corresponding TBS to be worth flow chart among the present invention, may further comprise the steps:

(500) at first, the scheduling of clear and definite actual allocated and non-scheduling resource total amount RU number in described TBS resource table specifically in which hierarchical resource;

(501) secondly, search in the TBS resource table, this example finds I TBS value of this grade correspondence as table 1;

(502) once more, according to described I TBS value and the RU that calculates _Number, obtain I corresponding performance number;

This step can calculate according to existing method, is about to the TBS value divided by RU _NumberObtain corresponding code check, under the specific modulation mode, each code check is corresponding to a power.

(503) last, from nodeB to selecting minimal power mandate R the power mandate of described dispatching services and the power mandate of SRNC to described non-scheduling service, in step 402, select in the resulting I wattmeter less than and near the power of R, be exactly TBS value to be selected corresponding to the TBS that obtains this power.

Second embodiment

Present embodiment realizes that the multiplexing method of scheduling and non-scheduling service transmission is different with first embodiment in the configuration of TBS resource selection table and TBS system of selection, realizes by following steps:

Steps A is provided with basic resources unit, calculates scheduling and the possible altogether code channel time interval resource quantity C of non-scheduling according to Resource Unit normalization, designs T the optional value of TBS in each hierarchical resource, sets up TBS resource selection table in the MAC layer;

Step B, when scheduling and non-scheduling service when existing simultaneously and non-scheduling service data volume and non-scheduling service data volume can carry less than the Radio Resource of configuration bit number the time, the non-scheduled transmission of the definite employing of MAC layer;

Step C: the scheduling of the reality of distributing respectively according to nodeB and SRNC and the SF and the timeslot number of non-scheduling resource, calculate the basic RU number that scheduling and non-scheduling resource are occupied altogether;

Step D:, in TBS resource selection table, seek corresponding TBS by the basic RU number of the reality of step C gained.

Wherein steps A further may further comprise the steps:

Step (A1): determine TBS maximum and minimum value in the total resources;

What the minimum value of TBS was got is the bit number 23 of schedule information, the maximum number bits that the maximum of TBS should corresponding SF=1, modulation system may be transmitted during for 16QAM, and according to the formula that step 201 is mentioned, obtaining the TBS maximum is 13976.

Step (A2): guarantee that TBS evenly distributes in log-domain, so that obtain S TBS value, and the value of S coarsegrain more is more little, and the value of filling out padding is also just few more.

Step (A3): do not consider hierarchical resource N value, promptly during N=1, and be not subjected to the restriction of above-mentioned 32 TBS, all TBS are divided in a group, set up the TBS resource table, as S=2048 in this example, promptly TBS evenly distributes in log-domain, has 2048 values.

Step D further may further comprise the steps:

Step (D1): by the RU that calculates _NumberCan obtain S code check with S TBS value, thereby obtain S power of corresponding code check;

Step (D2): from nodeB to selecting minimal power mandate R the power mandate of described dispatching services and the power mandate of SRNC to described non-scheduling service, in step D1, select in the resulting S wattmeter less than and near the power of R, be exactly TBS value to be selected corresponding to the TBS that obtains this power.

Claims (6)

1. scheduling and the multiplexing method of non-scheduling service transmission is characterized in that during a high speed uplink packet inserted, and comprised the steps:

(1) basic resources unit is set, calculates scheduling and the possible altogether code channel time interval resource quantity C of non-scheduling,, be divided into N the mode of possible total resources C according to the normalization equivalence according to Resource Unit normalization _NumberIndividual hierarchical resource;

(2) in the calculation procedure (1) in each hierarchical resource minimum and maximum transport module size be the TBS value, determine I TBS value having in each grade to obtain a N _NumberThe TBS resource table of * I;

(3) when scheduling and non-scheduling service exists simultaneously and the non-scheduling service data volume can be carried less than the Radio Resource that disposes bit number, the MAC layer determines to adopt non-scheduled transmission, be about to scheduling and non-scheduling service and transmit multiplexingly, and obtain the scheduling and the non-scheduling resource amount of actual allocated from Node B and service wireless network controller SRNC;

(4) scheduling and the non-scheduling resource amount of the reality of distributing respectively according to Node B and service wireless network controller SRNC are calculated the basic resources number that scheduling and non-scheduling resource amount are occupied altogether;

(5) the basic resources number that is occupied altogether by step (4) resulting scheduling of calculating and non-scheduling resource amount judges which grade the total resources of distribution has dropped in, and the N that is mentioned in step (2) _NumberSelect corresponding TBS in the TBS resource table of * I.

2. the method for claim 1 is characterized in that, in the step (1):

Described basic resources unit is the solid size road of spreading factor SF=16;

Described possible altogether code channel time interval resource quantity X is 1 to 80 Resource Unit;

Described hierarchical resource number N _NumberCan be divided exactly by 80.

3. the method for claim 1 is characterized in that, in the step (2): the bit number 23 that the minimum TBS value in described each hierarchical resource is a schedule information;

Maximum TBS value in described each hierarchical resource is the maximum number bits that corresponding spreading factor SF=1, modulation system may be transmitted during for 16QAM, satisfies following formula for maximum TBS value in N the hierarchical resource:

$\frac{\mathrm{TBS}/M\×\mathrm{SF}}{704-17\×\mathrm{ENI}\×\mathrm{SF}-(24+\mathrm{ceil}((\mathrm{TBS}+24)/5114)\×4)/M\×\mathrm{SF}+704\×(t-1)}=1$

Wherein, 24 correspondences be the number of CRC check bit, 4 correspondences be Turbo coding and the tail bit that carries over through punching, ceil is the number that rounds up, t is a timeslot number, ENI is for using the number of E-UCCH, M is the value of modulation system correspondence, when adopting the QPSK modulation system, and M=2, when adopting the 16QAM modulation system, M=4.

4. the method for claim 1 is characterized in that, in the step (2):

I the TBS value that has in described definite each grade, its specific implementation is as follows:

In the log-domain space, between the minimum and maximum TBS value of above-mentioned gained, evenly insert I-2 TBS value, promptly TBS maximum and minimum value are taken the logarithm, in the log-domain space with even I-2 logarithm TBS value between the minimum and maximum TBS value of being taken the logarithm, again the TBS logarithm value of inserting is converted to corresponding TBS numerical value, thereby obtains I TBS value.

5. the method for claim 1 is characterized in that, in the step (4):

Calculate the scheduling and the non-scheduling resource total amount of actual allocated:

$\mathrm{RUnumber}=\frac{16}{{\mathrm{SF}}_{\mathrm{schedular}}}\×N\_{\mathrm{TS}}_{\mathrm{schedular}}+\frac{16}{{\mathrm{SF}}_{\mathrm{nonschedular}}}\×N\_{\mathrm{TS}}_{\mathrm{nonschedular}}$

Wherein, SF _Scheduler, SF _{Non schedular}Be respectively the spreading factor SF of scheduling resource, non-scheduling resource;

N-TS _Scheduler, N-TS _{Non scheduler}Be respectively the timeslot number of scheduling resource, non-scheduling resource.

6. the method for claim 1 is characterized in that, in the step (5):

(5a) at first, scheduling and the non-scheduling resource total amount RU according to the calculating actual allocated described in the step (4) judges which grade it has dropped in;

(5b) secondly, the N that in step (2), is mentioned _NumberFind I TBS value of this grade correspondence in the TBS resource table of * I;

(5c) once more, according to I the TBS value of step 5b gained and the RU of step 5a gained _NumberCalculate I code check, and to I power that should I code check;

(5d) last, because respectively corresponding power mandate of nodeB and SRNC, select minimal power mandate R among both, in step 5c, select in the resulting I power less than and near the power of R, be exactly the TBS value of the correspondence that will obtain corresponding to the TBS that obtains this power.

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