CN102377512B - Method and device for de-interleaving uplink channel - Google Patents
Method and device for de-interleaving uplink channel Download PDFInfo
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Abstract
The invention discloses a method and a device for de-interleaving an uplink channel. The method comprises the following steps of: dividing a storage space of a terminal on a time-frequency resource list into combinations of different base addresses and offset addresses; determining positions of uplink channel information according to the base addresses and the offset addresses; and recovering the uplink channel information according to the determined positions. By the method and the device, position information of a rank indication (RI) is not required to be stored; therefore, the problems of relatively complicated structure and more occupied resources of a de-interleaving design can be solved; and the method and the device are easy to implement.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of up channel de-interweaving method and device.
Background technology
3GPP (3rd Generation Partnership Project shown in Fig. 1, third generation partner program) LTE (Long Term Evolution, Long Term Evolution) in communication system, relate to the up channel deinterleaving process in 3GPP LTE communication system.
The channel interleaving of transmitter side in 3GPP LTE communication system, by 3 class control information CQI (Channel Quality Information, channel quality information), RI (Rank Indication, link indicate), ACK (HARQ-ACK information, response message) and 1 class data message DATA be staggered in time-domain resource table by particular order, then from left to right press leu time and read.Because CQI and DATA is multiplexing, their unifications are called DATA, i.e. data message here.According to related protocol regulation, the size of time-domain resource table and the arrangement mode of above-mentioned four category informations as follows:
1. with
for time-domain resource table row (
refer to be used in a subframe transmission PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) SC-FDMA (Single Carrier-Frequency Division Multiple Access, Single Carrier-Frequency Division multiple access accesses) symbolic number), order is from left to right: 0,1,2 ..., C
max-1.With R '
max=H '/C
maxfor time-domain resource table line number (H " in this subframe modulation symbol sum).
2. first put (RI) information, up put from the most bottom row of time-domain resource table.Time normal CP (Cycle Prefix, Cyclic Prefix), the shared row of RI can only be { Isosorbide-5-Nitrae, 7,10}, and press that { order of 1,10,7,4} is put.During expansion CP, the shared row of RI can only be { 0,3,5,8}, and press that { order of 0,8,5,3} is put.
3.DATA information is put by row from the 1st row the 1st row of time-domain resource table, skips and runs into (RI) and occupied.
4. (ACK) information putting position is with reference to (RI) information, covers the position shared by other information.With (RI) unlike the selection arranged, be specially: during normal CP, shared by be classified as 2,3,8,9}, during expansion CP, shared by be classified as { 1,2,6,7}.
For above process, when the deinterleaving of receiving terminal channel, need information arrangement order in reduction running time-frequency resource table, and recover RI, ACK, DATA successively.Receiving terminal, when carrying out channel deinterleaving process, needs to consider following problems:
The information of above-mentioned Four types is staggered, and for normal CP, expansion CP, subframe containing the situation of Sounding (exploration information), they there are differences position in time-domain resource table;
In order to improve decoding efficiency, four category informations that follow-up decoder module requires deinterleaving to export are continuous, therefore need to skip RI in real time when separating DATA.
In order to solve the problem, existing solution channel interleaving generally adopts while solution RI, storing the positional information of RI at time-domain resource table, then reading the positional information of RI when separating DATA, realizes skipping RI function.Such project organization relative complex, takies resource larger.
Summary of the invention
Main purpose of the present invention is to provide a kind of up channel de-interweaving method and device, at least to solve the structure relative complex of above-mentioned deinterleaving design, takies the problem that resource is larger.
According to an aspect of the present invention, provide a kind of up channel de-interweaving method, comprising: combination terminal being divided into different base address and offset address at the memory space of running time-frequency resource table; According to the position of above-mentioned base address and offset address determination uplink channel information; According to the location restore uplink channel information determined.
According to a further aspect in the invention, provide a kind of up channel de-interleaving apparatus, comprising: divide module, for terminal to be divided into the combination of different base address and offset address at the memory space of running time-frequency resource table; Position determination module, for according to the division base address of Module Division and the position of offset address determination uplink channel information; Information recovery module, for the location restore uplink channel information determined according to position determination module.
Pass through the present invention, adopt when carrying out up channel deinterleaving process, terminal is divided into the combination of different base address and offset address at the memory space of running time-frequency resource table, according to the position of this base address and offset address determination uplink channel information, recovers the second uplink information.It does not need the positional information storing RI, solves the structure relative complex of deinterleaving design, takies the problem that resource is larger, is convenient to realize.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the uplink receiver functional schematic according to correlation technique;
Fig. 2 is the flow chart of a kind of up channel de-interweaving method according to the embodiment of the present invention;
Fig. 3 stores schematic diagram according to the UE information of the embodiment of the present invention 1;
Fig. 4 is the flow chart of a kind of up channel de-interweaving method according to the embodiment of the present invention 1;
Fig. 5 is base address and the offset address relation schematic diagram of RI in time-domain resource table in the normal CP situation according to the embodiment of the present invention 1;
Fig. 6 is the structured flowchart of a kind of up channel de-interleaving apparatus according to the embodiment of the present invention;
Fig. 7 is the structured flowchart of a kind of up channel de-interleaving apparatus according to the embodiment of the present invention 2.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
The receiving device of the embodiment of the present invention is when carrying out deinterleaving process, current UE is divided into the combination of different base address and offset address at the memory space of running time-frequency resource table, the position of uplink channel information is uniquely determined according to base address and offset address, wherein, uplink channel information comprises the first uplink information and the second uplink information, first uplink information comprises RI and ACK, and the second uplink information comprises CQI and DATA, is all represented with DATA by the second uplink information in the embodiment of the present invention.
Fig. 2 shows the flow chart of a kind of up channel de-interweaving method according to the embodiment of the present invention, and the method comprises the following steps:
Step S202: terminal is divided into the combination of different base address and offset address by receiving device at the memory space of running time-frequency resource table;
In the embodiment of the present invention, the colleague mutually of the running time-frequency resource table of this terminal has identical base address, and same column has identical offset address, uniquely can determine the memory location of uplink channel information with base address and offset address.
Step S204: this receiving device is according to the position of base address and offset address determination uplink channel information;
Wherein, uplink channel information comprises the first uplink information, such as RI and ACK; If the current position for determining RI, can complete according to following step:
Steps A 1: the first uplink information number read according to CP type and the running time-frequency resource table current line of up channel subframe determines the offset address of current first uplink information (being now RI); The initial offset address (i.e. the offset address of first RI) of RI is 0; CP type refers to it is normal (Normal), or expansion (Extend).
Steps A 2: the base address calculating current RI, the initial base address (i.e. the base address of first RI) of RI is address corresponding to the footline of running time-frequency resource table;
When calculating the base address of RI (RI except except first RI), first can judge whether the offset address of this current RI in running time-frequency resource table is be expert at first deviation post, if, (such as the base address of a upper RI is subtracted the numerical value of specifying according to the base address of the upper RI of storage mode amendment of running time-frequency resource table, this numerical value of specifying is relevant with the storage mode of running time-frequency resource table in memory block), using the base address of amended base address as current RI.
Consider by FPGA (Field Programmable Gate Array, field programmable gate array) when realizing of the present invention, because sequential logic computing exists the problem of time delay, so can in the base address of often going last deviation post place amendment RI.Such as: determine whether last be expert at deviation post according to the deviation post of current RI in running time-frequency resource table, if so, revise the base address of current RI, using the base address of amended base address as next RI.
In running time-frequency resource table, when the offset address of RI is 3, illustrate that RI is in last deviation post of this row.
Steps A 3: the address calculating current RI according to the base address of current RI and offset address;
Steps A 4: repeat above-mentioned steps A1-steps A 3, calculate the address of next RI, until obtain the address of all RI, namely solve RI.
For the acquisition of the position of ACK, above-mentioned steps A1-steps A 4 can be adopted, repeat no more here.
Step S206: this receiving device is according to the above-mentioned location restore uplink channel information determined.
Uplink channel information also comprises the second uplink information, i.e. CQI and DATA; Now, step S204 also comprises:
Step B 1: calculate current second uplink information the number of middle RI information of being expert at;
Such as, often go containing RI number containing in RI sum (this sum is that UE is supplied to receiving device) calculating time-domain resource table according to UE.If UE containing RI add up to 4 integral multiple, the sum that row (subcarrier) number that then RI is shared in running time-frequency resource table is RI divided by 4 business, if UE is not the integral multiple of 4 containing the sum of RI, then the sum that row (subcarrier) number that RI is shared in running time-frequency resource table is RI adds 1 divided by the business of 4.Interval shared by running time-frequency resource table by UE again, can in the hope of the first trip position of RI, RI number perseverance contained by other row that RI first trip is downward is that contained by 4, RI first trip other row upwards, RI number perseverance is zero, and first trip is that the sum of RI is divided by the remainder after 4 containing the number of RI.In the running time-frequency resource table interval that current UE is corresponding, can according to the currency of base address, real-time judge current line is containing the number of RI.
Step B2: according to the instruction of the number of the RI information calculated, current offset address, CP type and detectable signal (Sounding), determine the offset address of next second uplink information; When time domain resource table the first row has RI and subframe is expansion CP, the initial offset address of the second uplink information is 1, otherwise is zero.
Step B3: the base address calculating current second uplink information, the base address of first second uplink information is address corresponding to the first trip of running time-frequency resource table;
When the base address of calculating second uplink information, first can judge whether the offset address of current second uplink information in running time-frequency resource table is be expert at first deviation post, if, the base address of upper second uplink information is revised (such as according to the storage mode of running time-frequency resource table, the base address of upper second uplink information is added the value of specifying, the size of this value of specifying is relevant with the storage mode of running time-frequency resource table in memory block), using the base address of amended base address as current second uplink information.
Consider when realizing of the present invention by FPGA, because sequential logic computing exists the problem of time delay, so the base address of the second uplink information can be revised often going last deviation post place.Such as: determine whether last be expert at deviation post according to the deviation post of current second uplink information in running time-frequency resource table, if, the base address of this current second uplink information is revised, using the base address of amended base address as next second uplink information according to the storage mode of running time-frequency resource table.
Step B4: the address determining current second uplink information according to the base address calculated and offset address;
Step B5: repeat above-mentioned steps, calculate the address of next second uplink information, until obtain the address of all second uplink informations.
Terminal is divided into the combination of different base address and offset address by the present embodiment at the memory space of running time-frequency resource table, and make full use of the first uplink information (i.e. RI, ACK) relatively-stationary feature in position in running time-frequency resource table, calculate base address and the offset address of RI, ACK.In addition, the number of the interval often row RI of real-time calculating running time-frequency resource table, realizing the object skipping RI, solving the complex structure that relevant deinterleaving designs, the problem that resource consumption is large when separating DATA, achieve deinterleaving process simply, recover original uplink channel information.
Embodiment 1
The present embodiment is when carrying out deinterleaving process, interval shared by running time-frequency resource table according to UE, four category informations (RI, ACK, CQI and DATA) are jumped write data storage area, location, recover time-domain resource table information arrangement order, as shown in Figure 3, for UE information stores schematic diagram, this figure has two block RAMs to store the information of two time slots (except parameter signal) respectively, and namely each RAM stores the information of a time slot (except parameter signal) (by time slot during Normal cp containing 6 sign computation) in bandwidth of cell.Based on storage mode shown in Fig. 3, present embodiments provide a kind of up channel de-interweaving method, see Fig. 4, the method comprises the following steps:
Step S401: start to calculate RI position;
Step S402: the initial base address calculating RI, this initial base address is obtained by footline position between memory block, such as, footline position between memory block is multiplied by 6.
Step S403: judge whether RI quantity is zero, if so, performs step S408, starts the calculating of ACK position; If not, step S404.
Step S404: the offset address generating RI with mould 4 counter, the initial offset address of RI is zero.As shown in Figure 5.
Because the row of RI shared by running time-frequency resource table are relatively-stationary, so the offset address of RI is also relatively-stationary in often going, and be 4, during for normal CP, be classified as shared by RI Isosorbide-5-Nitrae, 7,10}, and by { order of 1,10,7,4} is put.During expansion CP, shared by RI, be classified as { 0,3,5,8}, and by { 0, the order of 8,5,3} is put, therefore the present embodiment adopts mould 4 counter to generate the offset address of RI, such as, during for normal CP, mould 4 counter is 1, and the offset address generating RI is 1, when mould 4 counter is 2, the offset address generating RI is 10, by that analogy;
Step S405: calculate the current base address of RI.
The calculating of the present embodiment base address adopts to be carried out often going last deviation post place, one's own profession base address is subtracted 6 as the base address of next line.
Step S406: calculate RI current address according to the base address of RI and offset address, exports RI current address, solves RI.
Step S407: calculate residue RI number, return step S403.
This step can arrange a counter, and the initial value of this counter is the total number of RI, every circulation primary (performing a step S407), and the value of this counter subtracts 1, and the value after counter upgrades is residue RI number;
Step S408: calculate the initial base address of ACK.This initial base address is obtained by footline position between memory block, such as, footline position between memory block is multiplied by 6.
Step S409: judge whether ACK quantity is zero, if so, performs step S414, starts the calculating of DATA position; If not, step S410.
Step S410: the offset address generating ACK with mould 4 counter, the initial offset address of ACK is zero.
Step S411: calculate the current base address of ACK.
The calculating of the base address of the present embodiment ACK adopts to be carried out often going last deviation post place, one's own profession base address is subtracted 6 as the base address of next line.
Step S412: calculate ACK current address according to the base address of ACK and offset address, exports ACK current address, solves ACK.
Step S413: calculate residue ACK number, return step S409.
This step can be realized by a counter, and the initial value of this counter is the total number of ACK, every circulation primary (performing a step S413), and the value of this counter subtracts 1, and the value after counter upgrades is residue ACK number;
Step S414: calculate the initial base address of DATA and offset address.When time domain resource table the first row has RI and subframe is expansion CP, the initial offset address 1 of DATA, otherwise be zero.In addition, the initial base address of DATA is obtained by first trip position between memory block.
Step S415: judge whether DATA quantity is zero, if so, perform step S421, deinterleaving terminates; If not, step S416 is performed.
Step S416: calculate current line containing RI number.
Step S417: according to current line containing RI number, current offset address, CP type and Sounding instruction, determine the offset address of subsequent time DATA.When time domain resource table the first row has RI and CP type is expansion type, the offset address of first DATA is the address (being such as 1) that the secondary series of this running time-frequency resource table is corresponding; Otherwise the offset address of first DATA is the address of first correspondence of this running time-frequency resource table (being such as 0);
Such as: the offset address span of the second uplink information is: 0 ~ 11.If RI number contained by current line is 4, current offset address is 3, CP type is normal CP, is not with Sounding to indicate, then the offset address of subsequent time second uplink information is 5.
Step S418: the base address calculating DATA;
The calculating of the base address of the present embodiment DATA adopts to be carried out often going last deviation post place, one's own profession base address is added 6 as the base address of next line.
Step S419: calculate DATA current address according to the base address of DATA and offset address, exports current address, solves DATA.
Step S420: calculate residue DATA number, return step S415.
This step can arrange a counter, and the initial value of this counter is the total number of DATA, every circulation primary (performing a step S420), and the value of this counter subtracts 1, and the value after counter upgrades is residue DATA number;
Step S421: deinterleaving terminates.
UE is divided into the combination of different base address and offset address by the present embodiment at the memory space of running time-frequency resource table, and make full use of the position in running time-frequency resource table of RI, ACK in agreement relatively fixing and often row sum mostly be the feature of 4 most, calculate base address and the offset address of RI, ACK easily.In addition, calculate the number of the interval often row RI of running time-frequency resource table in real time, efficiently solve the problem skipping RI when separating DATA.Said method by simply designing realization, can reduce the resource consumption in deinterleaving process.
Fig. 6 shows the structured flowchart of a kind of up channel de-interleaving apparatus according to the embodiment of the present invention, and this device comprises:
Divide module 62, for terminal to be divided into the combination of different base address and offset address at the memory space of running time-frequency resource table;
Position determination module 64, is connected with division module 62, for the position according to the base address and offset address determination uplink channel information that divide module 62 division;
Information recovery module 66, is connected with position determination module 64, for the location restore uplink channel information determined according to position determination module 64.
Preferably, the uplink channel information determined in position determination module 64 comprises the first uplink information; Position determination module 64 comprises:
First offset address computing unit, the first uplink information number for having read according to cyclic prefix type and the running time-frequency resource table current line of up channel determines the offset address of current first uplink information;
First uplink information is RI or ACK, and the offset address of first RI or ACK is 0; Cyclic prefix type refers to it is normal (Normal), or expansion (Extend).
First base address computing unit, for calculating the base address of current first uplink information, the initial base address of the first uplink information is address corresponding to the footline of running time-frequency resource table;
When calculating the base address of RI (RI except except first RI), first can judge whether the offset address of this current RI in running time-frequency resource table is be expert at first deviation post, if, (such as the base address of a upper RI is subtracted the numerical value of specifying according to the base address of the upper RI of storage mode amendment of running time-frequency resource table, this numerical value of specifying is relevant with the storage mode of running time-frequency resource table in memory block), using the base address of amended base address as current RI.
Consider when realizing of the present invention by FPGA, because sequential logic computing exists the problem of time delay, so can in the base address of often going last deviation post place amendment RI.Such as: determine whether last be expert at deviation post according to the deviation post of current RI in running time-frequency resource table, if, the base address of current RI is revised, using the base address of amended base address as next RI according to the storage mode of running time-frequency resource table.
First address calculation, for calculating the address of current first uplink information according to the base address of current first uplink information and offset address;
First loop control unit, for triggering the first offset address computing unit, the first base address computing unit and the first address calculation, calculates the address of next first uplink information, until obtain the address of all first uplink informations.
The uplink channel information determined in above-mentioned position determination module 64 also comprises the second uplink information, i.e. CQI and DATA, is all called DATA; Position determination module 64 comprises:
RI number computing unit, for calculate current second uplink information the number of middle RI information of being expert at;
Such as, often go containing RI number containing in RI sum (this sum is that UE is supplied to receiving device) calculating time-domain resource table according to UE.If UE containing RI add up to 4 integral multiple, the sum that row (subcarrier) number that then RI is shared in running time-frequency resource table is RI divided by 4 business, if UE is not the integral multiple of 4 containing the sum of RI, then the sum that row (subcarrier) number that RI is shared in running time-frequency resource table is RI adds 1 divided by the business of 4.Interval shared by running time-frequency resource table by UE again, can in the hope of the first trip position of RI, the characteristic that first trip can be 4 according to RI number perseverance contained by downward other row of RI first trip containing the number of RI is determined, namely the sum of RI is divided by the remainder after 4.In addition, in the running time-frequency resource table interval that current UE is corresponding, contained by RI first trip other row upwards, RI number perseverance is zero, so just can according to the currency of base address, and real-time judge current line is containing the number of RI.
Second offset address computing unit, for the instruction of the number according to the RI information calculated, current offset address, cyclic prefix type and detectable signal, determines the offset address of next second uplink information; When time domain resource table the first row has RI and CP type is expansion type, the offset address of first DATA is the address (being such as 1) that the secondary series of this running time-frequency resource table is corresponding; Otherwise the offset address of first DATA is the address of first correspondence of this running time-frequency resource table (being such as 0).
Second base address computing unit, for calculating the base address of current second uplink information, the initial base address of the second uplink information is address corresponding to the first trip of running time-frequency resource table;
When the base address of calculating second uplink information, first can judge whether the offset address of current second uplink information in running time-frequency resource table is be expert at first deviation post, if, the base address of upper second uplink information is revised (such as according to the storage mode of running time-frequency resource table, the base address of upper second uplink information is added the value of specifying, the size of this value of specifying is relevant with the storage mode of running time-frequency resource table in memory block), using the base address of amended base address as current second uplink information.
Consider when realizing of the present invention by FPGA, because sequential logic computing exists the problem of time delay, so the base address of the second uplink information can be revised often going last deviation post place.Such as: determine whether last be expert at deviation post according to the deviation post of current second uplink information in running time-frequency resource table, if, the base address of this current second uplink information is revised, using the base address of amended base address as next second uplink information according to the storage mode of running time-frequency resource table.
Second address calculation, for determining the address of current second uplink information according to the base address calculated and offset address;
Second loop control unit, for triggering the second offset address computing unit, the second base address computing unit and the second address calculation, calculates the address of next second uplink information, until obtain the address of all second uplink informations.
Terminal is divided into the combination of different base address and offset address by the present embodiment at the memory space of running time-frequency resource table, and make full use of the first uplink information (i.e. RI, ACK) relatively-stationary feature in position in running time-frequency resource table, calculate base address and the offset address of RI, ACK.In addition, the number of the interval often row RI of real-time calculating running time-frequency resource table, realizing the object skipping RI, solving the complex structure that relevant deinterleaving designs, the problem that resource consumption is large when separating DATA, achieve deinterleaving process simply, recover original uplink channel information.
Embodiment 2
The structured flowchart of up channel de-interleaving apparatus as shown in Figure 7, comprise memory RAM, write RAM control module, RI/ACK base address computing module, RI/ACK offset address computing module, RI/ACK read control module, row RI number computing module, DATA base address computing module, DATA offset address computing module, DATA read control module.The functional description of each module is as follows:
1, memory RAM is made up of two sub-RAM, be used for storing the upward signal information of two time slots (except parameter signal) in bandwidth of cell respectively, the degree of depth of every sub-RAM is the resource particle number of (except parameter signal) in a time slot in bandwidth of cell.
2, write RAM control module be used for control UE information write RAM operation.In order to reduce the order of data in running time-frequency resource table, the information in distinct symbols is alternately stored.Be specially: if a is UE information start memory location, then the initial memory address of first symbol is 6a, then add 6 jumping locations.2nd symbol initial memory address is 6a+1, then adds 6 jumping positions, the like, as shown in Fig. 3 of embodiment 1.So just the mode that the resource in the time slot of in bandwidth of cell (except parameter signal) increases progressively by frequency domain after first time domain is stored in RAM, as long as read original order that RAM just can recover running time-frequency resource table in order.
3, RI/ACK read control module, for producing according to RI or ACK number, to read RAM enable, and read RAM according to the base address of RI or ACK and offset address, solves RI or ACK.
This RI/ACK read control module is equivalent to the first loop control unit in the position determination module 64 of Fig. 6.
4, RI/ACK offset address computing module, in RI/ACK read control module is enable, generates the row mark of RI, the offset address that also namely time-frequency resource table capable (frequency domain) vector is corresponding with mould 4 counter.
Wherein, this RI/ACK offset address computing module is equivalent to the first offset address computing unit in the position determination module 64 of Fig. 6.
5, RI/ACK base address computing module, for judging that according to RI/ACK offset address whether current location is often go last deviation post (for RI, ACK, last deviant is 3), if so, then base address subtracts 6, otherwise constant.In addition, the initial base address of RI, ACK is multiplied by 6 by UE in the footline position of time-domain resource table and is obtained.
This RI/ACK base address computing module is equivalent to the first base address computing unit in the position determination module 64 of Fig. 6.
6, DATA read control module, reads RAM enable (when DATA number is not 0, reading RAM enable) for producing according to DATA number, and reads RAM according to the base address of DATA and offset address, solve DATA.
This DATA read control module is equivalent to the second loop control unit in the position determination module 64 of Fig. 6.
7, DATA offset address computing module, for RI number, current offset address contained by expansion CP index signal, Sounding index signal, base address corresponding row, determines the offset address of subsequent time.The offset address scope of DATA is: 0 ~ 11, represents with 4bit variable.
This DATA offset address computing module is equivalent to the second offset address computing unit in the position determination module 64 of Fig. 6.
8, DATA base address computing module, for judging according to offset address whether current location is last deviation post (for DATA, last deviation post is according to CP type and whether be with Sounding and change), if, then base address adds 6, otherwise constant.In addition, the initial base address of DATA is multiplied by 6 by UE in the first trip position of time-domain resource table and is obtained.
This DATA base address computing module is equivalent to the second base address computing unit in the position determination module 64 of Fig. 6.
9, row RI number computing module, often goes containing RI number for calculating time-domain resource interval according to UE containing RI sum.If UE containing RI add up to 4 integral multiple, the sum that row (subcarrier) number that then RI is shared in running time-frequency resource table is RI divided by 4 business, if UE is not the integral multiple of 4 containing the sum of RI, then the sum that row (subcarrier) number that RI is shared in running time-frequency resource table is RI adds 1 divided by the business of 4.Interval shared by running time-frequency resource table by UE again, can in the hope of the first trip position of RI, RI number perseverance contained by other row that RI first trip is downward is that contained by 4, RI first trip other row upwards, RI number perseverance is zero, and first trip is that the sum of RI is divided by the remainder after 4 containing the number of RI.In the running time-frequency resource table interval that current UE is corresponding, can according to the currency of base address, real-time judge current line is containing the number of RI.
This row RI number computing module is equivalent to the RI number computing unit in the position determination module 64 of Fig. 6.
UE is divided into the combination of different base address and offset address by the present embodiment at the memory space of running time-frequency resource table, and make full use of the position in running time-frequency resource table of RI, ACK in agreement relatively fixing and often row sum mostly be the feature of 4 most, calculate base address and the offset address of RI, ACK easily.In addition, calculate the number of the interval often row RI of running time-frequency resource table in real time, efficiently solve the problem skipping RI when separating DATA.Said method by simply designing realization, can reduce the resource consumption in deinterleaving process.
Above embodiment, when carrying out up channel deinterleaving process, according to the feature that the location comparison of the first uplink information in running time-frequency resource table is fixing, calculates the position of the first uplink information, and separates the second uplink information by the position calculating RI.Realize simple, and do not need the positional information storing RI, save resource.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a up channel de-interweaving method, is characterized in that, comprising:
Terminal is divided into the combination of different base address and offset address at the memory space of running time-frequency resource table;
According to the position of described base address and offset address determination uplink channel information;
According to uplink channel information described in the described location restore determined;
Wherein, described uplink channel information comprises the first uplink information;
Position according to described base address and offset address determination uplink channel information comprises:
The the first uplink information number read according to cyclic prefix type and the described running time-frequency resource table current line of up channel subframe determines the offset address of current first uplink information;
Calculate the base address of described current first uplink information, wherein, the base address of first first uplink information is address corresponding to the footline of described running time-frequency resource table;
According to the base address of described current first uplink information and the address of described current first uplink information of offset address calculating;
Repeat above-mentioned steps, calculate the address of next first uplink information, until obtain the address of all first uplink informations;
Wherein, described first uplink information is link instruction RI or response message ACK.
2. method according to claim 1, is characterized in that, the base address calculating current first uplink information comprises:
Judge whether the offset address of described current first uplink information in described running time-frequency resource table is be expert at first deviation post, if, according to the base address of upper first uplink information of described current first uplink information of storage mode amendment of described running time-frequency resource table, using the base address of amended base address as described current first uplink information, wherein, described current first uplink information is the first uplink information except described first first uplink information.
3. method according to claim 1, is characterized in that, described uplink channel information also comprises the second uplink information; Described second uplink information is channel quality indicator (CQI) and data message DATA;
Position according to described base address and offset address determination uplink channel information comprises:
Calculate current second uplink information the number of the middle RI that is expert at;
According to the instruction of the number of the RI of described calculating, current offset address, described cyclic prefix type and detectable signal, determine the offset address of next second uplink information; When described running time-frequency resource table the first row has RI and described cyclic prefix type is expansion type, the offset address of first second uplink information is the address that the secondary series of described running time-frequency resource table is corresponding; Otherwise the offset address of described first second uplink information is the address of first correspondence of described running time-frequency resource table;
Calculate the base address of described current second uplink information, wherein, the base address of first second uplink information is address corresponding to the first trip of described running time-frequency resource table; The address of described current second uplink information is determined according to the base address of current second uplink information of described calculating and offset address;
Repeat above-mentioned steps, calculate the address of next second uplink information, until obtain the address of all second uplink informations.
4. method according to claim 3, is characterized in that, the base address calculating described current second uplink information comprises:
Judge whether the offset address of described current second uplink information in described running time-frequency resource table is be expert at first deviation post, if, according to the base address of upper second uplink information of described current second uplink information of storage mode amendment of described running time-frequency resource table, using the base address of amended base address as described current second uplink information, wherein, described current second uplink information is the second uplink information except described first second uplink information.
5. a up channel de-interleaving apparatus, is characterized in that, comprising:
Divide module, for terminal to be divided into the combination of different base address and offset address at the memory space of running time-frequency resource table;
Position determination module, for according to the base address of described division Module Division and the position of offset address determination uplink channel information;
Information recovery module, for uplink channel information described in the location restore determined according to described position determination module;
Wherein, the uplink channel information determined in described position determination module comprises the first uplink information;
Described position determination module comprises:
First offset address computing unit, the first uplink information number for having read according to cyclic prefix type and the described running time-frequency resource table current line of up channel subframe determines the offset address of current first uplink information;
First base address computing unit, for calculating the base address of described current first uplink information, wherein, the base address of first first uplink information is address corresponding to the footline of described running time-frequency resource table;
First address calculation, for calculating the address of described current first uplink information according to the base address of described current first uplink information and offset address;
First loop control unit, for triggering described first offset address computing unit, described first base address computing unit and described first address calculation, calculates the address of next first uplink information, until obtain the address of all first uplink informations;
Wherein, the first uplink information determined in described position determination module is link instruction RI or response message ACK.
6. device according to claim 5, is characterized in that, the uplink channel information determined in described position determination module also comprises the second uplink information; Described second uplink information is channel quality indicator (CQI) and data message DATA;
Described position determination module comprises:
RI number computing unit, for calculate current second uplink information the number of middle RI information of being expert at;
Second offset address computing unit, for the instruction of the number of the RI according to described calculating, current offset address, described cyclic prefix type and detectable signal, determines the offset address of next second uplink information; When described running time-frequency resource table the first row has RI and described cyclic prefix type is expansion type, the offset address of first second uplink information is the address that the secondary series of described running time-frequency resource table is corresponding; Otherwise the offset address of described first second uplink information is the address of first correspondence of described running time-frequency resource table;
Second base address computing unit, for calculating the base address of described current second uplink information, wherein, the base address of first second uplink information is address corresponding to the first trip of described running time-frequency resource table;
Second address calculation, determines the address of described current second uplink information for the base address of current second uplink information according to described calculating and offset address;
Second loop control unit, for triggering described second offset address computing unit, described second base address computing unit and described second address calculation, calculates the address of next second uplink information, until obtain the address of all second uplink informations.
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| CN201010260761.2A CN102377512B (en) | 2010-08-18 | 2010-08-18 | Method and device for de-interleaving uplink channel |
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| CN201010260761.2A CN102377512B (en) | 2010-08-18 | 2010-08-18 | Method and device for de-interleaving uplink channel |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1825970A (en) * | 2006-03-16 | 2006-08-30 | 东南大学 | Convolution de-interleaving apparatus for cable digital TV |
| CN101257313A (en) * | 2007-04-10 | 2008-09-03 | 深圳市同洲电子股份有限公司 | Deconvolution interweave machine and method realized based on FPGA |
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| KR100651567B1 (en) * | 2004-03-18 | 2006-11-29 | 삼성전자주식회사 | Apparatus and Method for deinterleaving using Inner Memory and Outer Memory |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1825970A (en) * | 2006-03-16 | 2006-08-30 | 东南大学 | Convolution de-interleaving apparatus for cable digital TV |
| CN101257313A (en) * | 2007-04-10 | 2008-09-03 | 深圳市同洲电子股份有限公司 | Deconvolution interweave machine and method realized based on FPGA |
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Effective date of registration: 20151117 Address after: 518057 Nanshan District science and technology, Guangdong Province, South Road, No. 55, No. Patentee after: ZTE Corporation Patentee after: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Address before: 518057 Nanshan District science and technology, Guangdong Province, South Road, No. 55, No. Patentee before: ZTE Corporation |