CN102111240A - Method and device for data block partitioning and method and device for data coding - Google Patents
Method and device for data block partitioning and method and device for data coding Download PDFInfo
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Abstract
The invention discloses a method and a device for data block partitioning and a method and a device for data coding based on resource units, and the method for data block partitioning includes the determination of, for a bit stream to be encoded in a coding scheme containing an upper layer coding and a physical layer coding, whether the upper layer coding is enabled . The method also includes the partitioning of the bit stream into one or more blocks by a forward error correction (FEC) coding after the upper layer coding is enabled. The one or more blocks have a block size determined based on the size of one resource unit. The size of the resource unit corresponds to one or more units predefined in the physical layer for resource allocation.
Description
Technical field
The embodiment that this specification discloses relates to wireless communication technique, particularly relevant for a kind of block dividing method and device based on resource units.
Background technology
Forward error correction (FEC) technology is mainly use on the initial data of transmitting terminal, comes protected data with the coded system that increases redundant data (redundant data).A forward error correction (FEC) decoding algorithm is then detected at receiving terminal, and can only carry out error correction according to receiving data.
The modern times multicast and broadcast service (MBS) communication system in, forward error correction (FEC) technology can be implemented with two kinds of complimentary fashion substantially.The first, forward error correction (FEC) technology can utilized channel coding schemes correction bit-errors in physical layer.The second, forward error correction (FEC) technology can be at a package that more (for example an application layer or a transport layer) utilizes another encoding scheme (for example fountain sign indicating number (fountain code) or speed dragon sign indicating number (raptor code)) reduction to lose in the upper strata.When the forward error correction (FEC) of physical layer attempts determining that all positions of receiving are correct, the forward error correction (FEC) that the upper strata encoding scheme is provided will be attempted the missing data of reduction.Adoptable channel coding schemes has turbine code (turbo code), convolution code (convolutional code), low-density parity check code codings such as (LDPC code); Encoding scheme in the upper strata can adopt reed-solomon code (Reed-Solomon (RS) code), fountain sign indicating number (fountain code), speed dragon sign indicating number (raptor code), rupee hand over word (Luby transform (LT) code), cyclone sign indicating number (tornado code) etc.For instance, fast dragon sign indicating number (raptor code) has adopted in a plurality of standards does file conveying and crossfire (streaming) application, organize multimedia broadcasting and traffic criteria (the 3RD Generation Partnership Program Multimedia Broadcast/Multicast Service that multicasts comprising third generation communication standards, 3GPP MBMS), Internet Protocol data broadcasting (the Digital VideoBroadcast Handheld Internet Protocol Datacast of handheld video broadcasting standard, DVB-H IPDC) standard, Internet Protocol formula TV (Digital Video Broadcast Internet Protocol Internet Protocol television, the DVB-IPIIPTV) standard of the Internet Protocol formula video broadcasting of commercial TV service are provided on an Internet Protocol platform, and a plurality of other standards.
IEEE 802.16m normal structure, it is striving for becoming the 4G standard, also can utilize the complementary forward error correction of this kind (FEC) technology to multicast with enhancing and the reliability and the efficient of broadcast service (MBS).But, complementary forward error correction (FEC) technology still may be brought out some problem.Fig. 1 is the example that shows an encoding scheme, and one of them exemplary code device is used as encodes to a plurality of block, and produces more odd encoder block.Encoded block can utilize mould 2 (modulo-2) that some block are added up, or directly videos to one of them block.Therefore, these block can interlink.Illustrate, in the encoder of transmission end, X=A,
And
Wherein
Represent step-by-step mould 2 to add up (bit-wise modulo-2addition).At receiving terminal, some known encoded block can be resumed, and the relevant block of reduction.In Fig. 1, if X can be reduced, promptly A equals X.If learn A, then B just can be by calculating
Learn.
If a given data file, if this data file is separated into more multidata block, then encoded block can have the more possibility of multidata block combination.The result has more sane coding.In other words, a less block size can provide more sane encoding scheme.Yet the encoding scheme in physical layer is this mode of preference more not.(turbo code) is example with turbine code, if the length of turbo numeral is longer, minimum range can be bigger, and cause having manifest error usefulness.When utilization had the encoding scheme of these two kinds of different qualities, difference wherein may cause some problems.The example of the data flow in the middle of Fig. 2 display entity layer coding and the upper strata coding.At the beginning, exemplary upper strata encoding scheme encodes block to form encoded block (or claiming node).At this example, five encoded block can gather and by a forward error correction (FEC) encoder encodes.At last, these positions of doing in the encoded block of forward error correction (FEC) can be tuned as Fu Yuan, and these symbol units can be mapped to resource allocation (resource allocation).In other words, a plurality of block may not only be mapped to bigger forward error correction (FEC) block, also can be mapped to big resource.
Big block can be meaned bigger storage capacity, and results in receiving terminal longer time of delay.Because receive bigger package, these block may need one long relatively period to do collection at receiving terminal.In addition, when a plurality of block can be mapped to a forward error correction (FEC) block, the transmission failure of single forward error correction (FEC) block may cause the continuous mistake of a plurality of block, and the possibly block that loses of can't reducing of the encoding scheme on upper strata.For example, suggestion 384,1024 and 4096 s' block in 3GPP TS25.346.If use forward error correction (FEC) block of 6144 sizes, the forward error correction of a mistake (FEC) block can cause the mistake of 16 384 block.And, if the upper strata only needs minority during encoded block, one by forward error correction (FEC) that a plurality of encoded block constituted just block may cause the wasting of resources.In addition, the coding on upper strata may need other debug mode.But more redundant digit can cause the debug burden (overhead) that has more, for example cyclic redundancy check (CRC) (cyclic recundancy check, CRC) burden.
The position of doing in the encoded block of forward error correction (FEC) can be tuned as modulation symbol unit, and these modulations symbol units can be mapped to resource allocation.Concerning orthogonal frequency division multiple access (OFDMA) system, this resource is made up of frequency domain (claim not only subcarrier territory (subcarrier domain)) and time domain (but also claiming secondary frame territory (subframedomain) or orthogonal frequency division multiple access symbol field (OFDMA symbol domain)).In IEEE802.16m, the unit of a resource allocation be defined as resource units (resource unit, RU).A resource units comprises P
ScIndividual continuous subcarrier multiply by N
SymIndividual continuous orthogonal frequency division multiple access symbol.P wherein
ScBe 18 subcarriers, and N
SymBe respectively 6,7,5 orthogonal frequency division multiple access symbols in type-1, type-2, the secondary frame of the advanced air-interface (AAI) of type-3.And the unit of multiple resource allocation also is defined, for example: (the physical resource unit of actual resource unit, PRU), a logicality resource units (logical resource unit, LRU), a sub-frequency bands (sub-band) and a little frequency band (mini-band).The size of actual resource unit (PRU) and logicality resource units (LRU) is identical with resource units (RU).One sub-frequency bands (sub-band) and a little frequency band (mini-band) comprise 4 and 1 adjacent actual resource unit (PRU) respectively.
Organize in the Long Term Evolution (3GPP LTE TS 36.211) in the 3G communication standards, the unit of Resources allocation can be defined as resource block (RB).A resource block comprises that 7 or 6 continuous single carrier frequency division multi-task access (SC-FDMA) symbols that are arranged in time domain multiply by 12 continuous subcarriers that are arranged in frequency domain.
Summary of the invention
Provide a kind of block dividing method and device and data decoding method and device at this based on resource units.For example, block may be discussed in some embodiment cut apart, and scheduling and resource distribution (configuration), thereby some problem that preamble is mentioned solved.
A kind of method of cutting apart based on the block of resource units is provided in one embodiment.The method can comprise the use resource units of decision some in a forward error correction (FEC) block in physical layer, and determines information bit in a forward error correction (FEC) block according to the number that uses resource units; And according to the decision of the information bit number in a forward error correction (FEC) block upper strata coded data resource block size.
In another embodiment, provide a kind of device of cutting apart based on the block of resource units.This device can comprise a treatment circuit, this device can be configured to determine the use resource units of the some in a forward error correction (FEC) block in physical layer, and determine information bit in a forward error correction (FEC) block according to the number that uses resource units; And according to the decision of the information bit number in a forward error correction (FEC) block upper strata coded data resource block size.
In another embodiment, provide a kind of method, utilized to cut apart and carry out data information and decipher based on the block of resource units.The method can comprise that receiving one comprises in the encoding scheme of upper strata coding and physical layer coding one and to accept bitstream encoded (bit stream), and this is split into one or more blocks deciphers to carry out forward error correction (FEC) bitstream encoded.The resource block size of these one or more blocks is the size according to a resource units.And the resource units size can correspond to one or more in physical layer for the predefined unit of resource allocation.
In another embodiment, provide a kind of device, utilized and cut apart, carried out data information decoding based on the block of resource units.This device can comprise a treatment circuit, this device can be configured to receive one and comprise in the encoding scheme of upper strata coding and physical layer coding one and to accept bitstream encoded, and this is split into one or more blocks deciphers to carry out forward error correction (FEC) bitstream encoded.The resource block size of these one or more blocks is the size according to a resource units.And the resource units size can correspond to one or more in physical layer for the predefined unit of resource allocation.
Some embodiment provide a kind of method, device and system, the radio access network user experience that the more progressive function of equipment user can be provided and pass through action equipment.
Description of drawings
Fig. 1 shows can be used as a plurality of block are encoded, and produces a more encoding scheme of odd encoder block;
Fig. 2 is the data flow on display entity layer and upper strata;
Fig. 3 is according to showing the resource allocation based on the encoded block of resource units among the embodiment;
Fig. 4 is according to showing a data flow among the embodiment, cutting apart based on the block of resource units to explain;
Fig. 5 is according to showing among the embodiment that forward error correction encoded block reflection is to a resource;
Fig. 6 is according to showing the resource allocation of cutting apart based on the block of resource units among the embodiment;
Fig. 7 is limited to the resource units size that defines among 2 IEEE802.16m according to demonstration among the embodiment is current to wrong correction coding block;
Fig. 8 is limited to the sub-band size that defines among the IEEE802.16m according to demonstration among the embodiment is current to wrong correction coding block;
Fig. 9 is according to being shown in each scheduling coding strand at interval among the embodiment;
Figure 10 is according to being shown among the embodiment in the communication system, determining to implement by different way the encoding scheme of various objectives or different application;
Figure 11 provides the device of cutting apart based on the block of resource units according to showing one among the embodiment;
Figure 12 provides the method for cutting apart based on the block of resource units according to showing one among the embodiment;
Figure 13 is cut apart the method for deciphering according to utilization of demonstration among the embodiment based on the block of resource units.
[primary clustering symbol description]
100,202,204,206～block;
120,122,124～resource units;
200～Cong Xun;
210,220,230～resource units;
300,310,320,330,500,510,520,600,610～operation;
400～device;
410～processor;
420～storage module;
430～interface module.
Embodiment
Begin thus and will do the details introduction at implementing example, wherein some enforcement example is the collocation illustration.In the accompanying drawings, some identical reference number is to be used for indicating identical or similar part.In this explanation, " data ", " data ", " content " are similar term, describe among the embodiment data that can transmit, receive and/or store at this, and will alternately use.In addition, the noun that uses in specification " embodiment " is not the assessment of expressing any " matter ", and only is in order to express the explanation of an example.Therefore, the use of any this proper noun is not applied as spirit and the scope that limits embodiment in this specification.
As mentioned above, forward error correction (FEC) technology is applied in the physical layer to utilize channel coding schemes correction bit-errors; Also can be applicable to (for example application layer or transport layer) package in the upper strata to utilize other encoding scheme reduction to lose.Therefore, when the forward error correction in the physical layer (FEC) attempts confirming that all positions of receiving are correct, the forward error correction in the upper strata (FEC) will be attempted the data that reduction is lost.In general, bigger block means bigger storage capacity, and receiving terminal longer time of delay.In addition, a plurality of block can be videoed to the forward error correction of a physical layer (FEC) block, and the forward error correction decoding failure of physical layer can cause the mistake of a plurality of block, so possibly this mistake of can't reducing of the encoding scheme on upper strata.
Can utilize a kind of mode of cutting apart based on the block of resource units to solve some above-mentioned problem at these some embodiment that provide.And the method for resource distribution (configuration) is discussed at this in the lump.The cooperation that some embodiment can see through physical layer and go up interlayer, and the binding of cutting apart (burst partition) method with a Cong Xun, discuss problems such as how solving a large amount of storage burdens, receive delay, continuity mistake, the wasting of resources and debug burden.
Relevant in one embodiment multicasts and broadcast service (MBS), will limit size to a less size of forward error correction (FEC) block, stores burden and receive delay to reduce.Corresponding, in certain embodiments, the unit that uses a resource units to be used as block multicasts with improvement and broadcast service (MBS), and the size of resource units compares altogether, and assigned radio resource is little.Therefore, opposite with welcome conventional encoding scheme, some embodiment will select less forward error correction (FEC) block but not selection has maximum forward error correction (FEC) block of best error correction usefulness.
In an embodiment, in IEEE 802.16m, resource units can be defined as one or more sizes be equivalent to logical resource unit (logical RU, LRU) or actual resource unit (physical RU, resource units PRU).In addition, resource units also can be defined as one or more sub-bands (sub-band), one or more little frequency band (mini-band) etc.In an embodiment, in IEEE 802.16m, resource units can correspond to 6 symbols again, and each symbol has 18 subcarriers, and always has 108 data tones (tones).Organize in the Long Term Evolution (3GPP LTE) in the 3G communication standards, resource units can be defined as one or more resource block (RB), so the size of forward error correction (FEC) block can be according to than the littler resource units of Resources allocation altogether.Further, forward error correction cyclic redundancy check (CRC) (FEC CRC) can be reused the debug into block, to reduce the load of Cyclic Redundancy Check.
Upper strata encoding scheme (for example fountain sign indicating number (fountain code), speed dragon sign indicating number (raptor code) or reed-solomon code (RS code) etc.) is encoded to data to a plurality of entity schedulings at interval at each, to reduce the temporary and stand-by period at receiving terminal.In some case, the entity scheduling can be set at interval reinforcement among the IEEE802.16m (or the relevant standard of other global intercommunication microwave access (WiMAX)) broadcast service (the enhanced multicast broadcast service that multicasts, E-MBS) scheduling is (MSI) at interval, this means the super frame (superframe) of some, and access network can begin the fixed and relevant traffic of the broadcast service zone that multicasts (MBS zone) data flow in front row at interval in scheduling.Scheduling at interval (MSI) can be, the length of 2,4,8 or 16 super frames (superframe) is for example decided on the reinforcement of the specific case broadcast service (E-MBS) that multicasts.
Fig. 3 shows according to a block based on resource units (RU-based) among the embodiment.Among Fig. 3, the available altogether resource of whole block 100 expressions.The part of block 100 (secondary area piece 102) is represented a resource units, and occupies time and a sub-frequency bands (sub-band), little frequency band (mini-band) or the frequency interval to a plurality of resource units or block of a secondary frame.Therefore, a forward error correction (FEC) the encoded block part that can fill up secondary area piece 102.
Fig. 4 shows according to the data flow among the embodiment, and is described in the transmitter dividing method based on the block of resource units (RU-based).In Fig. 4, block (A, B, C etc.) can be used the upper strata encoding scheme of fountain sign indicating number (fountain code) for example or speed dragon sign indicating number (raptor code), transfers encoded block (X, Y, Z etc.) earlier to.Then, coding again, for example 16 cyclic redundancy check (CRC) (16-bit CRC) or 8 cyclic redundancy check (CRC) (8-bitCRC) are made in each encoded block available cycles redundancy check (CRC).The encoded block of this adding cyclic redundancy check (CRC) can be sent to a forward error correction (FEC) encoder, and produces forward error correction (FEC) encoded block (for example block 120,122,124) according to a suitable code rate.At last, modulation can be passed through in the position in forward error correction (FEC) encoded block, and the reflection of the Fu Yuanke behind the modulation is to a plurality of resource units.In an embodiment, the position of a data block can be allowed to reflection to a resource units.Therefore, one makes each block based on resource units (X, Y, Z etc.) can provide cutting apart of resource units (RU-based), and finally cuts apart to corresponding resource units.Among Fig. 4, this resource units is a logicality resource units (LRU).Therefore, the coding encoded block exported in upper strata can be called as the block based on resource units.Indicate at this, can be present in any between the functional blocks that Fig. 4 represented in the extraneous functional blocks of Fig. 4.According to the embodiment of Fig. 4, in receiver end, forward error correction (FEC) decoder can be deciphered according to each logicality resource units (LRU), and X, Y, Z can be obtained in regular turn, but and also Huo De Xie Code of A, B, C.
The Cong Xun that following table 1 lattice are introduced IEEE 801.16m/D3 to form 3 is cut apart (burst partition) rule.Can support in physical layer in form 1 listed Cong Xun size (NDB).These sizes are to comprise the size that adds Cyclic Redundancy Check (every Cong Xun and every forward error correction block) at the situation where applicable.Other size then may need to fill up (padding) to reach next Cong Xun size (burst size).When Cong Xun size (burst size) (comprising the Cyclic Redundancy Check position) surpasses maximum forward error correction (FEC) resource block size, 600 bytes (byte) for example, this Cong Xun can be cut to KFB forward error correction (FEC) block.Cong Xun size (burst size) can be determined by the parameter of following three forms-assignment sizes (size of resource allocation), modulation order and the efficient coding speed (effective code rate) that determined according to link adaptation (link adaptation).
Form 1: Cong Xun size
The index of Cong Xun size can be calculated by following formula: idx=I
MinimalSize+ I
SizeOffset, and I
MinimalSizeCan calculate according to the assignment sizes in the form 2.The number that assignment sizes (allocation size) can be defined as logicality resource units (LRU) multiply by the multiple-input and multiple-output grade (MIMOrank) of distributing to this Cong Xun.Modulation exponent number (modulation order) N
Mod(for example quadrature phase offset modulation (QPSK) is 2,16-orthogonal amplitude modulating and changing (16-QAM) be 4 and 64-orthogonal amplitude modulating and changing (64-QAM) be 6) depend on parameter I SizeOffset according to form 3.
The assignment sizes of one or two logicality resource units (LRU) (allocation size) can be special case (being stringer separately on form).For three or above logicality resource units (LRU) assignment sizes, modulation exponent number (modulation order) only depends on ISizeOffset.(advancedbase station, ABS) scheduler determines the available advanced base station that can consider final modulation exponent number (modulation order), efficient coding speed (effective code rate) and link adaptation (link adaptation) of the value of assignment sizes and ISizeOffset.
Form 2: be assignment sizes minimum of a function size index
Form 3: the rule of modulation exponent number
In another embodiment, provide a block to cut apart based on resource units, and, can be available with having only the Cong Xun size (burst size) of idx1-33 in the form 1 if assignment sizes (allocation sizes) is limited in 1 to 4 resource units.Strengthen the broadcast service (E-MBS) that multicasts and to utilize this 33 kinds of Cong Xun sizes (burst size).
In another embodiment,, can be available with having only the Cong Xun size (burst size) of idx1-40 in the form 1 if assignment sizes (allocation sizes) is limited in 1 to 8 resource units.Strengthen the broadcast service (E-MBS) that multicasts and to utilize this 40 kinds of Cong Xun sizes (burst size).Fig. 5 is that show can be in order to make the embodiment that links with IEEE802.16m/D3.Suppose that altogether resource is of a size of 100 resource units and Cong Xun is of a size of 19,200 positions, one of them resource units comprises 96 data tones (tones).16-orthogonal amplitude modulating and changing (16-QAM) can use in 1/2 nominal rate (nominal rate).According to this embodiment, Cong Xun 200 can be split into 4 forward error corrections (FEC) block (block 202, block 204, block 206, block 208), and each block comprises 4800 positions.The embodiment shown according to Fig. 3, these 4 reflections to forward error correction (FEC) block of all resources can be shown as Fig. 5.Ensuing embodiment can be used as according to an execution mode and realizes cutting apart based on the data of resource units when total traffic data is 19,200 positions.
Fig. 6 shows to cut apart according to the block based on resource units of an embodiment.If resource units 210 is defined as the resource units that defines among the IEEE 802.16m, and the size of forward error correction (FEC) block is restricted to the size (resource units) of resource units 210, and total traffic data then can be cut into one of each Cong Xun (burst) tool and comprise 200 forward error correction (FEC) block.Actual coding speed is about 0.52.As shown in Fig. 6,4 resource units can stay (in the big block of embodiment Fig. 6, the corner of keeping right in the bottom) and can be used makes other traffic (for example clean culture (unicast)).The hatching of corresponding block can help to describe each about 200 corresponding resource block size among Fig. 6.
In some case, to provide the cutting apart of block and finish a block and cut apart based on the resource units that defines among two IEEE 802.16m.Fig. 7 shows according to the block based on the resource units that defines among two IEEE 802.16m among the embodiment to cut apart, wherein resource units 220 is defined as the resource units that defines among two IEEE 802.16m, and forward error correction (FEC) resource block size restriction need meet resource units 220, and meaning is two resource units sizes.In this embodiment, total traffic data then can be cut into one of each Cong Xun (burst) tool and comprises 400 forward error correction (FEC) block.Actual coding speed is about 0.52.As shown in Fig. 7,2 resource units can stay (in the big block of embodiment Fig. 7, the corner of keeping right in the bottom) and can be used makes other traffic (for example clean culture (unicast)).The hatching of corresponding block can help to describe each about 400 corresponding resource block size among Fig. 7.
In some case, to provide the cutting apart of block and finish a block and cut apart based on sub-band (sub-band-based).Fig. 7 shows according to cutting apart based on the block of sub-band (sub-band-based) among the embodiment, wherein resource units 230 is defined as a sub-frequency bands (resource units that defines among four IEEE 802.16m), and forward error correction (FEC) resource block size is restricted to resource units 230, and meaning is a sub-frequency bands size.In this embodiment, total traffic data then can be cut into one of each Cong Xun (burst) tool and comprises 800 forward error correction (FEC) block.Actual coding speed is about 0.52.As shown in Fig. 8,1 resource units (or 1 sub-frequency bands) can stay (in the big block of embodiment Fig. 8, the corner of keeping right in the bottom) and can be used makes other traffic (for example clean culture (unicast)).The hatching of corresponding block can help to describe each about 800 corresponding resource block size among Fig. 8.
In an embodiment, the upper strata coding can be made the data coding when each scheduling interval.Upper strata encoding scheme (for example fountain sign indicating number (fountain code), speed dragon sign indicating number (raptor code) or reed-solomon code (RS code) etc.) can make to serve as in each or a plurality of entity scheduling at interval makes the data coding, to reduce the buffer of receiving terminal (register) size and stand-by period as shown in Figure 9.Fig. 9 shows that according among the embodiment, each scheduling is available coding strand (coding chain) at interval.
Figure 10 shows, adopts this communication system that discloses an embodiment in some situation, may utilize distinct methods to be various objectives or application use encoding scheme.For example in one embodiment, can provide a data flow 300 and can do one about whether the decision of activation in operation 310 (enable) upper strata coding.If the upper strata coding can be enabled, cutting apart just of block can be finished at the resource units of physical layer according to the position in operation 320.In an embodiment, if the upper strata coding is not enabled, cutting apart just of block can be finished according to position resource allocation of corresponding mobile station in physical layer in operation 330 again.
In some embodiment, resource distribution can utilize one or more to cut apart rule with the block that whether can use a corresponding kind in the indication mechanism.In an embodiment, rule can dispose in all set informations (global setting message).For example in IEEE 802.16m, rule can be strengthened broadcast service configuration (the Advanced air interface enhanced multicastbroadcast service configuration that multicasts by advanced air interface, AAI-E-MBS-CFG) issue, all broadcast service that multicast (MBS service) will be via the reinforcement broadcast service split order (E-MBS_PARTITION_INDICATOR) that multicasts, adopt a kind of corresponding forward error correction (FEC) rule, as shown in form 4.All reinforcements reinforcement in broadcast service (E-MBS) zone broadcast service split order (E-MBS_PARTITION_INDICATOR) that multicasts that multicasts can be identical.
Form 4: the resource distribution embodiment that the broadcast service (E-MBS) that multicasts is cut apart is strengthened in indication
In certain embodiments, can be according to all set information to reinforcement broadcast service (E-MBS) the area configurations rule that multicasts.For example in IEEE 802.16m, rule can be strengthened broadcast service configuration (the Advanced air interface enhanced multicast broadcast serviceconfiguration that multicasts by advanced air interface, AAI-E-MBS-CFG) provide, announce all be positioned at a corresponding reinforcement multicast the broadcast service that multicasts (MBS service) in broadcast service (E-MBS) zone will be via the reinforcement broadcast service split order (E-MBS_PARTITION_INDICATOR) that multicasts, adopt a kind of corresponding forward error correction (FEC) rule, as shown in form 5.This reinforcement broadcast service split order (E-MBS_PARTITION_INDICATOR) that multicasts can be indicated the multicast state in broadcast service (E-MBS) zone of each corresponding all reinforcement.
Form 5: the resource distribution embodiment that the broadcast service (E-MBS) that multicasts is cut apart is strengthened in indication
In one embodiment, strengthen the rule that to set in broadcast service (E-MBS) zone that multicasts at a plurality of or all services in one.For example in IEEE 802.16m, rule can be provided by the reinforcement broadcast service map (E-MBS MAP) that multicasts, all services in the zone of indicating will be via the reinforcement broadcast service split order (E-MBS_PARTITION_INDICATOR) that multicasts, adopt a kind of corresponding rule, as shown in form 6.All are positioned at the multicast flow (flows) in broadcast service (E-MBS) zone of corresponding reinforcement the identical reinforcement broadcast service split order (E-MBS_PARTITION_INDICATOR) that multicasts.
Form 6: the resource distribution embodiment that the broadcast service (E-MBS) that multicasts is cut apart is strengthened in indication
In another embodiment, can be according to a particular service arrangement rule of the regional set information of broadcast service (E-MBS) that a reinforcement is multicasted.For example in IEEE 802.16m, rule can be provided by the reinforcement broadcast service map (E-MBS MAP) that multicasts, indicate the special services in the zone will be via the reinforcement broadcast service split order (E-MBS_PARTITION_INDICATOR) that multicasts, adopt a kind of corresponding rule, as shown in form 7.Strengthen the state that the broadcast service split order (E-MBS_PARTITION_INDICATOR) that multicasts can be indicated each service flow (service flow).
Form 7: the resource distribution embodiment that the broadcast service (E-MBS) that multicasts is cut apart is strengthened in indication
The correspondence of the code word size of upper strata resource block size and forward error correction (FEC) encoded block can be provided among the above mentioned embodiment.This with tend to provide that to be of a size of the conventional architectures of big code word size than upper strata block opposite, conventional architectures need be stood the loss of continuity mistake and/or receiving terminal stand-by period.Therefore, code word size tends to bigger than upper strata resource block size traditionally, and cause in the physical layer big code word and thereby need bigger buffer and receiving terminal stand-by period, the method that an embodiment provides can be provided with one in upper strata block and the less resource units of physical layer encoded block size difference.Therefore in embodiment, the size of buffer and the stand-by period of receiving terminal are dwindled.Moreover physical layer resource block size (it can be limited by the resource units size) set in an embodiment equals the upper strata resource block size, and this can be avoided the continuity mistake, reduces the burden of sniffing and the efficient relatively utilization of resources is provided.So, can reduce physical layer encoded block size with upper strata block size conforms.Physical layer encoded block size (or employed resource units size) can define in system.Can take place as Fig. 4 and the shown opposite operation of Fig. 9 for forward error correction (FEC) encoded block that receiver received.
Figure 11 provides the device of cutting apart based on the block of resource units according to showing one among the embodiment.Figure 11 illustrates a device 400, and it may be implemented in or is used as a travelling carriage (for example an advanced travelling carriage (advanced mobile station, AMS)) or a base station and through the embodiment that is configured to finish.Device 400 can comprise a processor 410.This processor 410 can see through several different methods and implement.For example, processor 410 can be embodied as multiple processing method, comprises that a processing components, a coprocessor, a controller or multiple processing unit comprise integrated circuit for example an ASIC(Application Specific Integrated Circuit) (ASIC), an assembly programmable gate array (FPGA), a hardware accelerator etc.In an embodiment, processor 410 can be configured to carries out the instruction that stores, and this instruction can be positioned at a storage device or other processor 410 accessible devices.Through the instruction of carrying out storage or according to hard sign indicating numberization instruction manipulation, processor 410 controllable devices 400, and guiding device 400 carries out above-mentioned discussion and implements to cut apart relevant function based on the block of resource units, according to by the instruction of processor 410 and/or the instruction of storage device institute configuration processor 410, generator 400 corresponding configurations.So, no matter be by the configuration of hardware or software approach, or both is comprehensive, and when configuration was proper, processor 410 can be represented the entity that can carry out operation.
In some embodiment, device 400 also can comprise an interface module 430.This interface module 430 can comprise the hardware that allows device 400 to be connected with other device or user, and in some example, also comprises the software of configure hardware, with the interface function of activation device 400 with other device or user.Therefore, for instance, if device 400 is embodied as a mobile station, interface module 430 just can comprise a user interface and the function that provides can comprise for example demonstration, keyboard, soft key, contact panel interface, mouse, rocking bar, microphone, loudspeaker and/or any user interface that other may use at a travelling carriage.But interface module 430 also can comprise the circuit and/or the assembly of the interface between the activation device.Therefore, interface module 430 can comprise wired and/or wireless interface circuit, and for example an antenna (or a plurality of antenna) and corresponding transmission and receiving circuit see through a radio access technology and carry out wireless telecommunications with other device with activation.
In an embodiment, processor 410 and/or storage module 420 can comprise the treatment circuit of a part, and this treatment circuit is configured to make device 400 to finish according to solidus to processor 410 or by the configuration that execution command provided that is stored in configuration storage module 420.Therefore, according to device 400 travelling carriage of being implemented or base stations, device 400 can be configured to control above-mentioned cutting apart based on resource units.When doing to use in a travelling carriage or base station, device 400 can be configured to use the above-mentioned rule of cutting apart based on resource units, or adopts a reverse step to carry out data decoding.Corresponding, device 400 can be configured to determine one will carry out bitstream encoded (bit stream) with an encoding scheme, comprises upper strata coding and physical layer coding, no matter and the upper strata coding be to be enabled.Device 400 also can be configured to, and after the upper strata coding is enabled, uses forward error correction (FEC) coding that bit stream is cut apart to one or more block.The size of this one or more block can be determined by the size of a resource units.The size of this resource units can be corresponding is one or more unit that resource allocation institute had before defined as for physical layer.Therefore, device 400 can be configured to carry out with following discussion Figure 12 or Figure 13 relevant method, and can revise maybe and need not make an amendment.
Figure 12 and Figure 13 are for according to a system that shows among the embodiment, method, and the flow chart of program product.Each block or the step of this flow chart, and both is comprehensive, can utilize several different methods to implement, for example hardware, firmware and/or comprise the software of one or more computer program instructions.For example, one or more above-mentioned step can utilize computer program instructions to implement.In an embodiment, the computer program instructions that can implement above-mentioned steps can be stored in a storage facilities, and performed by a processor or a controller.Any so computer program instructions can be transfused to a computer or other programmable device (hardware) to make a machine, wherein on computer or the performed instruction of other programmable device can create the method that can realize by the indicated function of the block of flow chart or step.In some embodiment, computer program instructions is for being stored in an embodied on computer readable internal memory, and mode that can the programmable device guiding of a computer or other is specific, the instruction that wherein is stored in the embodied on computer readable internal memory can produce the object of a manufacturing, comprises the means of the function that the block of implementing procedure figure or step are indicated.Computer program instructions also can be input to a computer or other programmable device, and cause a series of operations of on computer or other programmable device, carrying out to make a computer-implemented flow process, the means of the indicated function of the block of implementing procedure figure or step wherein can be provided in computer or the performed instruction of other programmable device.
The method that the block of flow chart or step can be supported various combination is to realize specific function, can realize the combination of operation of specific function and the program instruction means that can realize specific function.And the block of one or more flow charts or step, and the combination of the block of flow chart or step, utilizable energy is enough carried out the specific purposes computer system according to hardware of specific function or step, or specific purposes computer and computer instruction is comprehensive.
Figure 12 provides the method for cutting apart based on the block of resource units according to showing one among the embodiment, this method can comprise that decision will carry out bitstream encoded with an encoding scheme to one, comprise upper strata coding and physical layer coding, whether its upper strata coding is enabled in operation 500.The method more can comprise, after the upper strata coding is enabled, in operation 510, bit stream cut apart to one or more block to carry out forward error correction (FEC) coding.The size of this one or more block can be determined by the size of a resource units.The size of this resource units can correspond to one or more in physical layer be resource allocation one or more unit of previous definition.
In some embodiment, above-mentioned operations specific can be corrected or strengthen in the mode of following discussion.In some case, embodiment can comprise more operation (as operation 520).Wherein following each correction, increase or reinforcement all can be included in previously described operation separately or with arbitrary combination.In an embodiment, the method also can comprise the one or more positions that are allocated in the configuration information, cuts apart the application of rule to point out the block in the operation 520.In some embodiment, can comprise the cutting apart of bit stream with bit stream cut apart to one to a plurality of blocks, each block has the resource block size of a resource units, and can be defined as a resource units, a plurality of resource units, a sub-frequency bands (sub-band), a plurality of sub-band, a little frequency band (mini-band) or a plurality of little frequency band, to provide global intercommunication microwave access (WiMAX) relevant enforcement; Or with bit stream cut apart to one to a plurality of blocks, the resource units of each block corresponds to a resource block or a plurality of resource block, so that the enforcement of Long Term Evolution (LTE) to be provided.In an embodiment, the cutting apart the block size that can comprise the upper strata and can correspond to a block of bit stream to a plurality of forward error corrections (FEC) codings, and do not comprise the filler (padding bits) of debug.In some embodiment, the duration of carrying out the upper strata coding can be filled up the interval of one or more physical layer scheduling (for example in IEEE 802.16mE-MBS, the physical layer scheduling can be to strengthen broadcast service (E-MBS) scheduling (MSI) at interval that multicasts at interval).In an embodiment, the debug result of forward error correction (FEC) block in the reusable physical layer in upper strata.In some embodiment, after upper strata coding is enabled, can distribute a littler resource size avoiding a big Cong Xun size, or total resources distribute and can be divided into a plurality of less resource allocations to produce a plurality of less sub-Cong Xun (sub-burst).
Figure 13 is cut apart the method for deciphering according to utilization of demonstration among the embodiment based on the block of resource units, and can comprise and receive one by carrying out bitstream encoded with an encoding scheme, this encoding scheme is included in upper strata coding and the physical layer coding in the operation 600, and to deciphering for forward error correction (FEC) code division to the bit stream of one or more block.The size of this one or more block can be determined by the size of a resource units.The size of this resource units can correspond to one or more in physical layer be resource allocation one or more unit of previous definition.
In some embodiment, above-mentioned operations specific can be corrected or following discussion is strengthened.Wherein following each correction or reinforcement all can be included in previously described operation separately or with arbitrary combination.In an embodiment, can comprise the cutting apart of bit stream with bit stream cut apart to one to a plurality of blocks, each block has the resource block size of a resource units, and can be defined as a resource units, a plurality of resource units, a sub-frequency bands (sub-band), a plurality of sub-band, a little frequency band (mini-band) or a plurality of little frequency band, provide global intercommunication microwave access (WiMAX) relevant enforcement; Or with bit stream cut apart to one to a plurality of blocks, the resource units of each block corresponds to a resource block or a plurality of resource block, and the enforcement of Long Term Evolution (LTE) is provided.In some embodiment, the cutting apart the block size that can comprise the upper strata and can correspond to a block of bit stream to a plurality of forward error corrections (FEC) codings, and do not comprise the filler (padding bits) of debug.In an embodiment, bit stream is separated Code and can be comprised bit stream cut apart to the bit stream of less resource allocation size and decipher avoiding a big Cong Xun size, or total resources distribute and can be divided into a plurality of less resource allocations to produce a plurality of less sub-Cong Xun (sub-burst).
Literal that provides herein and figure are more disclosed enforcement examples, and can be used for supporting system, method, device and a computer program.Any personage who knows this skill should understand the operation of each figure and/or literal, and/or the operation in figure and/or literal is comprehensive, can utilize several different methods to present as difference.The figure that realizes and/or the operation of literal, and/or the comprehensive and/or related text of the operation in the flow chart can comprise multiple hardwares for example circuit, integrated device electronics etc.The enforcement of a hardware or method can comprise one be in particular implement the set computer hardware of taking into account configuration of operation that this paper described, one utilize operation procedure coding staff described herein to or nextport hardware component NextPort that method disposed or both is comprehensive.The enforcement of this hardware or method can comprise an ASIC(Application Specific Integrated Circuit) (ASIC), a programmable logical device (PLD), an assembly programmable gate array (FPGA), a processor or other programmable device.The enforcement of this exposure also can utilize one or more operations that this paper describes and be embodied as the program coding instruction that is stored in a computer-readable modus ponens storing media.At this defined " computer-readable modus ponens storing media " is an entity storing media (volatility and/or non-volatile memory device), and Ying Yuyi " computer-readable modus ponens transmission medium " (meaning an electromagnetic signal) distinguishes.
The computer code instruction that can implement operation can be stored or be stored in a computer-readable modus ponens storing media, a device's memory equipment for example, and carry out by one or more computer hardwares.The computer code instruction can be loaded on a computer hardware to produce a specific machine that is configured to above-mentioned figure or the operation that literal was described especially that reaches.Embodiment also can comprise computer hardware, and this computer hardware can load with the mode of an order and carry out operation, or loads and carry out a part or All Jobs simultaneously.
The personage who knows this skill should be appreciated that at this and provides or the embodiment that describes only is a part of embodiment of the present invention.Really, the present invention can utilize multiple mode to implement, and should not limited by previously described embodiment; The disclosed embodiment of preamble is only provided by satisfying relevant decree.
Though the present invention discloses as above with embodiment; right its is not in order to qualification the present invention, any those who are familiar with this art, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the scope that appending claims defines.
Claims (30)
1. a block dividing method is characterized in that, be applicable to decision cut apart correspond to physical layer coding a bit stream in the size of a block of upper strata coding, comprising:
The number of one or more resource units that decision is used is given a forward error correction block that is positioned at a physical layer; And
According to the number of the above-mentioned resource units that uses, determine an information bit number to give above-mentioned forward error correction block; And
According to the above-mentioned information bit number of above-mentioned forward error correction block, determine the size of the above-mentioned block of above-mentioned upper strata coding.
2. block dividing method according to claim 1 is characterized in that above-mentioned resource units comprises P
SCIndividual continuous subcarrier and N
SymThe product of individual continuous orthogonal frequency division multiple access symbol, wherein above-mentioned P
SCAnd N
SymBe positive integer.
3. block dividing method according to claim 1 is characterized in that, above-mentioned resource units corresponds to one or more set resource units, one or more sub-band or one or more little frequency band of the related application of global intercommunication microwave access.
4. block dividing method according to claim 1 is characterized in that, above-mentioned resource units corresponds to one or more resource block of the related application of Long Term Evolution.
5. block dividing method according to claim 1 is characterized in that, the size of above-mentioned block correspond to above-mentioned forward error correction block above-mentioned information bit one or many times.
6. block dividing method according to claim 1 is characterized in that, carry out above-mentioned upper strata coding one during meet one or more physical layer scheduling at interval.
7. block dividing method according to claim 1 is characterized in that, also comprises one or more position of distributing in the configuration information, cuts apart an application of rule to point out a block.
8. block dividing method according to claim 1 is characterized in that, a upper strata of above-mentioned upper strata coding is one or more debug result who is configured to reuse at the above-mentioned forward error correction block of above-mentioned physical layer.
9. block dividing method according to claim 1 is characterized in that, also comprises:
Determine whether above-mentioned upper strata coding is enabled; And
Distribute another less resource size avoiding Da Cong news size, or cut apart total resources and be assigned as littler a plurality of resource allocations, to produce littler a plurality of sub-Cong Xun.
10. block dividing method according to claim 1 is characterized in that, also comprises:
Determine whether above-mentioned upper strata coding is enabled; And
After above-mentioned upper strata coding is enabled, cutting apart above-mentioned bit stream encodes to carry out above-mentioned forward error correction for one or more block, above-mentioned one or more block has the resource block size that size determined according to above-mentioned resource units, and the size of above-mentioned resource units is predefined one or more unit of a resource allocation corresponding to above-mentioned physical layer.
11. a block segmenting device is characterized in that, be applicable to decision cut apart correspond to physical layer coding a bit stream in the size of a block of upper strata coding, comprise a treatment circuit, carry out in order to dispose a block segmenting device:
The number of one or more resource units that decision is used is given a forward error correction block that is positioned at a physical layer; And
According to the number of the above-mentioned resource units that uses, determine an information bit number to give above-mentioned forward error correction block; And
According to the above-mentioned information bit number of above-mentioned forward error correction block, determine the size of the above-mentioned block of above-mentioned upper strata coding.
12. block segmenting device according to claim 11 is characterized in that above-mentioned resource units comprises P
SCIndividual continuous subcarrier and N
SymThe product of individual continuous orthogonal frequency division multiple access symbol, wherein above-mentioned P
SCAnd N
SymBe positive integer.
13. block segmenting device according to claim 11 is characterized in that, above-mentioned resource units corresponds to one or more set resource units, one or more sub-band or one or more little frequency band of the related application of global intercommunication microwave access.
14. block segmenting device according to claim 11 is characterized in that, above-mentioned resource units corresponds to one or more resource block of the related application of Long Term Evolution.
15. block segmenting device according to claim 11 is characterized in that, the size of above-mentioned block correspond to above-mentioned forward error correction block above-mentioned information bit one or many times.
16. block segmenting device according to claim 11 is characterized in that, carry out above-mentioned upper strata coding one during meet one or more physical layer scheduling at interval.
17. block segmenting device according to claim 11 is characterized in that, the also configurable above-mentioned block segmenting device of above-mentioned treatment circuit is cut apart an application of rule for distributing one or more position in the configuration information to specify a block.
18. block segmenting device according to claim 11 is characterized in that, a upper strata of above-mentioned upper strata coding is one or more debug result who is configured to reuse at the above-mentioned forward error correction block of above-mentioned physical layer.
19. block segmenting device according to claim 11 is characterized in that, also comprises execution:
Determine whether above-mentioned upper strata coding is enabled; And
Distribute a less resource size avoiding Da Cong news size, or cut apart total resources and be assigned as littler a plurality of resource allocations, to produce littler a plurality of sub-Cong Xun.
20. block segmenting device according to claim 11 is characterized in that, also is configured to:
Determine whether above-mentioned upper strata coding is enabled; And
After above-mentioned upper strata coding is enabled, cutting apart above-mentioned bit stream encodes to carry out above-mentioned forward error correction for one or more block, above-mentioned one or more block has the resource block size that size determined according to above-mentioned resource units, and the size correspondence of above-mentioned resource units is predefined one or more unit of a resource allocation as for above-mentioned physical layer.
21. a data decoding method is characterized in that, is applicable to the bit stream that use is cut apart based on a block of a resource units, comprising:
Receive above-mentioned bit stream, above-mentioned bit stream utilizes encoding scheme coding, and above-mentioned encoding scheme comprises upper strata coding and physical layer coding; And
Above-mentioned bit stream is deciphered, above-mentioned bit stream is cut apart to one or more block gives forward error correction coding, above-mentioned one or more block has the resource block size that size determined according to a resource units, and the size of above-mentioned resource units corresponds to and is positioned at a physical layer and is predefined one or more unit of a resource allocation.
22. Shuo Ju Xie Code method according to claim 21 is characterized in that above-mentioned resource units comprises P
SCIndividual continuous subcarrier and N
SymThe product of individual continuous orthogonal frequency division multiple access symbol, wherein above-mentioned P
SCAnd N
SymBe positive integer.
23. Shuo Ju Xie Code method according to claim 21 is characterized in that, above-mentioned resource units is one or more set resource units, one or more sub-band or one or more the little frequency band that corresponds to the related application of global intercommunication microwave access; Or
Above-mentioned resource units can correspond to one or more resource block of the related application of one or more Long Term Evolution.
24. Shuo Ju Xie Code method according to claim 21, it is characterized in that, above-mentioned bit stream is deciphered, cut apart the size that makes the size of above-mentioned block on upper strata be equivalent to one or more block of above-mentioned forward error correction coding based on above-mentioned bit stream, and above-mentioned size is calculated and is not comprised the filler that debug is used.
25. Shuo Ju Xie Code method according to claim 21, it is characterized in that, above-mentioned bit stream deciphered comprise and being deciphered that less above-mentioned resource allocation size can be avoided Da Cong news size cutting apart to the above-mentioned bit stream of a less resource allocation size; Or total resources are divided into less a plurality of resource allocations, to produce littler a plurality of sub-Cong Xun.
26. a data decording apparatus is characterized in that, is applicable to the decoding of a bit stream, above-mentioned bit stream uses to be cut apart based on a block of a resource units, comprises a treatment circuit, in order to carry out:
The above-mentioned bit stream that reception utilizes an encoding scheme to encode, above-mentioned encoding scheme comprise upper strata coding and physical layer coding; And
Above-mentioned bit stream is deciphered, above-mentioned bit stream is cut apart to one or more block gives forward error correction coding, above-mentioned one or more block has the resource block size that size determined according to a resource units, and the size of above-mentioned resource units corresponds to a physical layer and is predefined one or more unit of a resource allocation.
27. data decording apparatus according to claim 26 is characterized in that, above-mentioned resource units comprises P
SCIndividual continuous subcarrier and N
SymThe product of individual continuous orthogonal frequency division multiple access symbol, wherein above-mentioned P
SCAnd N
SymBe positive integer.
28. data decording apparatus according to claim 26 is characterized in that, above-mentioned resource units can corresponding most one or more set resource units, one or more sub-band or one or more little frequency band of the related application of global intercommunication microwave access; Perhaps above-mentioned resource units can corresponding most Long Term Evolution one or more resource block of related application.
29. data decording apparatus according to claim 26, it is characterized in that, above-mentioned treatment circuit also disposes above-mentioned data decording apparatus above-mentioned bit stream is deciphered, cut apart the size that makes the size of above-mentioned block on a upper strata be equivalent to one or more block of above-mentioned forward error correction coding based on above-mentioned bit stream, and above-mentioned size is calculated and is not comprised a plurality of fillers that debug is used.
30. data decording apparatus according to claim 26, it is characterized in that, above-mentioned treatment circuit also disposes above-mentioned data decording apparatus for above-mentioned bit stream is deciphered, comprise and being deciphered that less above-mentioned resource allocation size can be avoided Da Cong news size to cutting apart to the above-mentioned bit stream of a less resource allocation size; Or
One total resources are cut apart to less a plurality of resource allocations, to produce littler a plurality of sub-Cong Xun.
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| US29077409P | 2009-12-29 | 2009-12-29 | |
| US61/290,774 | 2009-12-29 | ||
| US12/976,613 US8510621B2 (en) | 2009-12-29 | 2010-12-22 | Method and apparatus for providing resource unit based data block partition |
| US12/976,613 | 2010-12-22 |
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| CN102111240A true CN102111240A (en) | 2011-06-29 |
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