CN102088732A - Method and equipment for optimizing TBS table for low speed service - Google Patents
Method and equipment for optimizing TBS table for low speed service Download PDFInfo
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Abstract
The invention relates to a method for optimizing a transmission block size (TBS) table for a low speed service. The method comprises the following steps of: a) acquiring a smallest packet size of the service; b) converting the smallest packet size into a TBS aligned to the smallest byte and taking the TBS as a first new transmission block size TBSnew-1 in the TBS table; c) calculating the Nth new transmission block size TBSnew-N via the following formula, namely TBSnew-N=N*step-i+TBSnew-1, wherein N is an index of the TBS table and equal to a value from 1 to 64; step-i is an arithmetic progression step length which is 8 times i; and i is a positive integer; d) if TBSnew-N is greater than or equal to the Nth old transmission block size TBSold-N, selecting the smallest arithmetic progression step length stepsmallest; and e) correcting the TBS table by using the selected smallest arithmetic progression step length stepsmallest. The invention also relates to equipment for realizing the method.
Description
Technical field
The present invention relates to a kind of TD-SCDMA HSPA+ (TD SDMA inserts high-speed packet and inserts evolution) system, and more specifically, the present invention relates in such system optimization to TBS (transmission block size) table that is used for the low rate traffic such as VOIP (IP phone), recreation, instant messaging.
The term abbreviation
The UE subscriber equipment
The HSPA+ high-speed packet inserts evolution
The VOIP IP phone
The TD-SCDMA TD SDMA inserts
TBS transmission block size
Background technology
For TD-SCDMA HSPA+ technology, in standard, defined byte-aligned TBS table, that is to say and in standard, listed all possible transmission block size.All HSPA+ equipment (comprising mobile device and base station) all should use the predefined transmission block size of these standards.If the data of mobile device are less than selected transmission block size, then mobile device should insert filling to be fit to this TBS epiphase.
Traditionally, in TD-SCDMA, this TBS table is a geometric progression, and each TBS calculates by following formula:
TBS
N＝TBS
1×P
N
Wherein N is the index of transmission block size table and is 1,2, and 3.....64, P are the gradual change coefficients of 3GPP standard definition, TBS
1It is first transmission block size.
This method for designing is for using big transmission block size (promptly, the transmission block size that is used for high-rate service) mobile device is enough good, yet (promptly for little transmission block size, the transmission block size that is used for low rate traffic) (for example, VOIP, recreation, instant messaging or the like low rate traffic) is not enough good.
It is 1～3,4～6 in the UE grade in the prior art that Fig. 1 shows, 7～9,10～12, be used for the curve chart of the transmission block size of TD-SCDMA HSPA+ under 13～15 situations.In Fig. 1,, for the sake of clarity, only listed the transmission block size of index value from 1 to 31 although the definition of the index of transmission block size is 1 to 64 altogether.In this accompanying drawing, showing in the UE grade respectively is 1～3,4～6,7～9,10～12, and the curve chart of the transmission block size under 13～15 situations.
Be 1～3 to be example now, utilize said method, will introduce unnecessary spending and can reach 53.3% expense in the worst case with the grade of VOIP and UE.Fig. 2 is the efficiency of transmission table that produces when different codecs uses the TBS table of prior art.From the table of Fig. 2, we as can be seen when audio coder ﹠ decoder (codec) transmits SID efficiency of transmission only reach 46.66666667.
From top argumentation, we are not difficult to find out under the situation of transmission low rate traffic, if still utilize the TBS table of prior art, will cause introducing the reduction of too much expense and efficiency of transmission.
Therefore, under the situation of transmission low rate traffic, need a kind of method and apparatus of the TBS of optimization table, avoid introducing too much expense thus and improve efficiency of transmission.
Summary of the invention
Technical problem to be solved by this invention is when transmission low rate traffic in TD-SCDMA HSPA+, optimizes TBS and shows to reduce too much expense and increase efficiency of transmission.
In order to solve the problems of the technologies described above, basic design of the present invention is: employing arithmetic series algorithm is optimized the TBS table that is used for low rate traffic.
As the first kind of technical scheme that realizes that the present invention conceives substantially, disclose a kind of the access in the high-speed packet access evolution TD-SCDMA HSPA+ system in TD SDMA and optimized the big or small method of showing of the transmission block that is used for low rate traffic, described method comprises the steps:
A) obtain the parcel size of described business;
B) described parcel size is changed into minimum byte-aligned transmission block size and with it as first the new transmission block size TBS in the described transmission block size table
New_1
C) calculate N new transmission block size TBS by following formula
New_N:
TBS
New_N=N * step_i+TBS
New_1, wherein N is the index of transmission block size table and is 1,2, and 3.....6 4, and step_i is the arithmetic series step-length and is 8 times of i that i is a positive integer;
D) if the TBS of described calculating
New_NThe transmission block size TBS in 〉=the N Geju City
Old_N, then in described arithmetic series step-length step_i, select minimum arithmetic series step-length step
Smallest
E) the minimum arithmetic series step-length step of the described selection of use
SmallestRevise described transmission block size table.
As the further improvement to first kind of technical scheme, i is selected from by 1,2,3,4,5,6 groups of forming.
As the second kind of technical scheme that realizes that the present invention conceives substantially, disclose a kind of the access in the high-speed packet access evolution TD-SCDMA HSPA+ system in TD SDMA and optimized the big or small equipment of showing of the transmission block that is used for low rate traffic, described equipment comprises:
Obtain device, be used to obtain the parcel size of described business;
Modifier is used for that described parcel size changed into minimum byte-aligned transmission block size and with its first new transmission block size TBS as described transmission block size table
New_1
Calculation element is used for calculating n new transmission block size TBS by following formula
New_N:
TBS
New_N=N * step_i+TBS
New_1, wherein N is the index of transmission block size table and is 1,2,3.....64, step_i are the arithmetic series step-lengths and are 8 times of i that i is a positive integer;
Choice device is if be used for the TBS of described calculating
New_NThe transmission block size TBS in 〉=the N Geju City
Old_N, then in described arithmetic series step-length step_i, select minimum arithmetic series step-length step
Smallest
Modifier is used to use the minimum arithmetic series step-length step of described selection
SmallestRevise described transmission block size table.
As the further improvement to second kind of technical scheme, i is selected from by 1,2,3,4,5,6 groups of forming.
In an embodiment of the present invention, described low rate traffic for example is one of IP phone, recreation, instant messaging.
In an embodiment of the present invention, the transmission block of prior art size table obtains by following formula:
TBS
Old_N=P
N* TBS
Old_1, TBS wherein
Old_1Be the transmission block size in first Geju City, TBS
Old_NBe the transmission block size in N Geju City, P is the gradual change coefficient of 3GPP standard definition.
Utilize technical scheme of the present invention, can optimize existing TBS table, thereby reduce too much expense and increase efficiency of transmission.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments, wherein:
It is 1～3,4～6 in the UE grade in the prior art that Fig. 1 shows, 7～9,10～12, be used for the curve chart of the transmission block size of TD-SCDMA HSPA+ under 13～15 situations.
Fig. 2 is the efficiency of transmission form that produces when different codecs uses the TBS table of prior art.
Fig. 3 is the flow chart according to the method for optimization TBS table of the present invention.
Fig. 4 is to be 16,24,32,40 in the arithmetic series step-length when utilizing optimization method of the present invention, and the UE classification is the curve chart of TBS table of 1～3 optimization and the TBS curve chart of prior art under 48 the situation.
Fig. 5 is the efficient form relatively when utilizing TBS of the present invention and utilizing the TBS of prior art.
Fig. 6 is a block diagram of realizing the equipment of method of the present invention.
Embodiment
Basic design of the present invention is in TD-SCDMA HSPA+, uses the geometric progression algorithm for high-rate service, uses the arithmetic series algorithm for low rate traffic, the TBS table that present invention focuses on to adopt the arithmetic series algorithm to optimize and be used for low rate traffic.Will be further described below the TBS table that how to utilize the arithmetic series algorithm to optimize to be used for low rate traffic.
In low rate traffic, common transmission rate is less than 20kbps and should business produce the transmission block of size less than 400 bits.
At first, list all transmission block sizes of low rate traffic bag; Select minimum bag size, use minimum byte-aligned transmission block size then as first transmission block size TBS in the TBS table
New_1
Then, because the HSPA+TBS table is byte-aligned, therefore the step-length of possible transmission block size is 8 multiple, for example 8 bits, 16 bits, 24 bits, 32 bits, 40 bits, 48 bits or the like.Use formula TBS
New_N=N * step_i+TBS
New_1Calculate n new transmission block size TBS
New_NIf TBS
New_NTransmission block size TBS more than or equal to the n Geju City in the TBS table of prior art
Old_N, then select these step-lengths.
Then, in the step-length of these selections, select optimum stepsize, just find minimum step.
At last, each TBS that calculates with minimum step
New_NSubstitute each TBS in the TBS table
Old_N
In one embodiment of the invention, with reference to figure 3, Fig. 3 is the method flow diagram according to optimization TBS table of the present invention.When the transmission low rate traffic, list all transmission block sizes of this business.Obtain the parcel size of described business then, step S301.Described parcel size changed into minimum byte-aligned transmission block size and with it as first the new transmission block size TBS in the described transmission block size table
New_1, step S302.Well-known is that 1 byte equals 8 bits.For example, parcel size is 67 bits, and so minimum byte-aligned transmission block size is 72 bits.Therefore, if TBS
New_1Parcel size size more than or equal to described business
_ 1, TBSn then
Ew_1It is the minimum byte alignment size that meets the demands.
Because in TD-SCDMA HSPA+, the TBS table is byte-aligned, therefore, possible transmission block size step-length is 8 multiple, for example is 8 bits, 16 bits, 24 bits, 32 bits, 40 bits, 48 bits or the like.Next find all possible step-length by more different arithmetic series step-lengths.In step S303, calculate N new transmission block size TBS by following formula
New_N:
TBS
new_N＝N×step_i+TBS
new_1
Wherein N is the index of transmission block size table and is 1,2, and 3.....64, step_i are the arithmetic series step-lengths and are 8 times of i that i is a positive integer.
More specifically, be 1 o'clock just at i, (N is 1,2......64) the one group of TBS value at each index in calculating; At i is 2 o'clock, and (N is 1,2......64) the one group of TBS value at each index in calculating; At i is 3 o'clock, and (N is 1,2......64) the one group of TBS value at each index in calculating; And the like.If the TBS that calculates above
New_NThe transmission block size TBS in 〉=the N Geju City
Old_N, then select employed step-length and select minimum step step therein
Smallest, step S304.At last, in step S305, will use minimum step step
SmallestEach TBS that calculates
New_NSubstitute each TBS in the TBS table
Old_N
Because too big step-length will be introduced unnecessary spending, so the arithmetic series step-length is preferably 8 bits, 16 bits, 24 bits, 32 bits, 40 bits, 48 bits.TBS value when in a preferred embodiment, only needing to calculate the arithmetic series step-length and be 8 bits, 16 bits, 24 bits, 32 bits, 40 bits, 48 bits.Like this, not only can reduce unnecessary spending, and reduce amount of calculation.
In order to understand the present invention better, please refer to Fig. 4, Fig. 4 is to be 16,24,32,40 in the arithmetic series step-length when utilizing optimization method of the present invention, the UE classification is the curve chart of TBS table of 1～3 optimization and the TBS curve chart of prior art under 48 the situation.
Be that example is described Fig. 4 below with VOIP.At first, select the parcel size size of VOIP
_ 1Be 112 bits, so TBS
New_1=112.From Fig. 4, it is 16,24,32,40 that the TBS curve of a prior art and 5 arithmetic series step-lengths are arranged, 48 TBS straight line.Be not difficult to find out that the arithmetic series step-length is 24,32,40,48 TBS straight line and prior art TBS curve intersection, and that the arithmetic series step-length is 16 straight line and prior art TBS curve is non-intersect.Therefore, selecting step-length is 24,32,40,48.At last, select minimum step in these step-lengths, promptly selecting minimum step is 24.Therefore, be that the TBS that calculated in 24 o'clock substitutes the TBS of prior art by using minimum step, thereby reduce unnecessary spending and increased efficiency of transmission.
Below with reference to Fig. 5, can know more and find out and utilize the present invention can increase efficiency of transmission.Fig. 5 is the efficient form relatively when utilizing TBS of the present invention and utilizing the TBS of prior art.Can know from Fig. 5 and find out that efficient improves when audio coder ﹠ decoder (codec) is WB (broadband) 6.6kbit/s, NB (arrowband) 12.2kbit/s, NB7.95kbit/s, NB7.40kbit/s, NB6.70kbit/s, NB5.90kbit/s, NB5.15kbit/s, NB4.75kbit/s.Especially, efficient significantly improves when audio coder ﹠ decoder (codec) is SID, and promptly existing efficient is 46.66666667, and the efficient that the present invention reaches is 100%.
In addition, the present invention also discloses a kind of equipment that is used for realizing the inventive method.More specifically, disclose a kind of the access in the high-speed packet access evolution TD-SCDMAHSPA+ system and optimized the big or small equipment of showing of the transmission block that is used for low rate traffic in TD SDMA.With reference to figure 6, Fig. 6 is a block diagram of realizing the equipment of method of the present invention.Described equipment comprises and obtains device 601, is used to obtain the parcel size of described business; Modifier 602 is used for described parcel size is changed into first the new transmission block size TBS of minimum byte-aligned transmission block size as described transmission block size table
New_1Calculation element 603 is used for calculating n new transmission block size TBS by following formula
New_N: TBS
New_N=N * step_i+TBS
New_1, wherein N is the index of transmission block size table and is 1,2,3.....64, step_i are the arithmetic series step-lengths and are 8 times of i that i is a positive integer; Choice device 604 is if be used for the TBS of described calculating
New_NThe transmission block size TBS in 〉=the N Geju City
Old_N, then in described arithmetic series step-length step_i, select minimum arithmetic series step-length step
SmallestModifier 605 is used to use the minimum arithmetic series step-length step of described selection
SmallestRevise described transmission block size table.Obtain the corresponding steps that device 601, modifier 602, calculation element 603, choice device 604 and modifier 605 are used for realizing method of the present invention, and make up with software, firmware or they and to realize.
The advantage that the present invention brought is to utilize method of the present invention to optimize TBS to show the efficiency of transmission of feasible significantly improvement VOIP on TD-SCDMA HSPA+ and reduce too much expense.
The present invention is not limited to above-mentioned VOIP business, is equally applicable to any low rate traffic, for example recreation, instant messaging or the like.That is to say, when any low rate traffic of transmission, optimize the TBS table, all within the scope of the present invention according to above-mentioned embodiment.
Although the disclosure has been described specific embodiment and correlation technique normally, the replacement of these embodiment and method and to change will be tangible for a person skilled in the art.Therefore, the above description of example embodiment does not limit or limits the disclosure.Under the prerequisite that does not deviate from essence of the present disclosure as defined by the appended claims and scope, other change, replace and change also is possible.
Claims (8)
1. optimize the big or small method of showing of the transmission block that is used for low rate traffic for one kind in TD SDMA access high-speed packet access evolution TD-SCDMA HSPA+ system, described method comprises the steps:
A) obtain the parcel size of described business;
B) described parcel size is changed into minimum byte-aligned transmission block size and with it as first the new transmission block size TBS in the described transmission block size table
New_1
C) calculate N new transmission block size TBS by following formula
New_N:
TBS
New_N=N * step_i+TBS
New_1, wherein N is the index of transmission block size table and is 1,2,3 ... ..64, step_i is the arithmetic series step-length and is 8 multiples of i that i is a positive integer;
D) if the TBS of described calculating
New_NThe transmission block size TBS in 〉=the N Geju City
Old_N, then in described step-length step_i, select minimum arithmetic series step-length step
Smallest
E) the minimum arithmetic series step-length step of the described selection of use
SmallestRevise described transmission block size table.
2. method according to claim 1, wherein i is selected from by 1,2,3,4,5,6 groups of forming.
3. method according to claim 1, wherein said low rate traffic are one of IP phone, recreation, instant messaging.
4. according to the process of claim 1 wherein that described transmission block size table obtains by following formula:
TBS
Old_N=P
N* TBS
Old_1, TBS wherein
Old_1Be the transmission block size in first Geju City, TBS
Old_NBe the transmission block size in N Geju City, P is the gradual change coefficient of 3GPP standard definition.
5. optimize the big or small equipment of showing of the transmission block that is used for low rate traffic for one kind in TD SDMA access high-speed packet access evolution TD-SCDMA HSPA+ system, described equipment comprises:
Obtain device, be used to obtain the parcel size of described business;
Modifier is used for described parcel size is changed into first the new transmission block size TBS of minimum byte-aligned transmission block size as described transmission block size table
New_1
Calculation element is used for calculating n new transmission block size TBS by following formula
New_N:
TBS
New_ N=N * step_i+TBS
New_1, wherein N is the index of transmission block size table and is 1,2,3 ... ..64, step_i is the arithmetic series step-length and is 8 times of i that i is a positive integer;
Choice device is if be used for the TBS of described calculating
New_NThe transmission block size TBS in 〉=the N Geju City
Old_N, then in described arithmetic series step-length step_i, select minimum arithmetic series step-length step
Smallest
Modifier is used to use the minimum arithmetic series step-length step of described selection
SmallestRevise described transmission block size table.
6. equipment according to claim 5, wherein i is selected from by 1,2,3,4,5,6 groups of forming.
7. equipment according to claim 5, wherein said low rate traffic are one of IP phone, recreation, instant messaging.
8. according to the equipment of claim 5, wherein said transmission block size table obtains by following formula:
TBS
Old_N=P
N* TBS
Old_1, TBS wherein
Old_1Be the transmission block size in first Geju City, TBS
Old_NBe the transmission block size in N Geju City, P is the gradual change coefficient of 3GPP standard definition.
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| WO2019047980A1 (en) * | 2017-09-11 | 2019-03-14 | Mediatek Singapore Pte. Ltd. | Transport block size determination in mobile communications |
| WO2019191973A1 (en) * | 2018-04-04 | 2019-10-10 | Zte Corporation | Methods, apparatus and systems for determining transport block size in wireless communications |
| CN110351003A (en) * | 2018-04-04 | 2019-10-18 | 华为技术有限公司 | Determine the method and communication device of transport block size |
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| WO2014005450A1 (en) * | 2012-04-18 | 2014-01-09 | 中兴通讯股份有限公司 | Transmission block size determination method and device, and synchronization method, device, and system |
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| WO2019191973A1 (en) * | 2018-04-04 | 2019-10-10 | Zte Corporation | Methods, apparatus and systems for determining transport block size in wireless communications |
| CN110351003A (en) * | 2018-04-04 | 2019-10-18 | 华为技术有限公司 | Determine the method and communication device of transport block size |
| CN110351003B (en) * | 2018-04-04 | 2021-12-28 | 华为技术有限公司 | Method and communication device for determining size of transmission block |
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Application publication date: 20110608 |