CN105515737A - Method and device for saving Harq data by LTE terminal - Google Patents
Method and device for saving Harq data by LTE terminal Download PDFInfo
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- CN105515737A CN105515737A CN201510884143.8A CN201510884143A CN105515737A CN 105515737 A CN105515737 A CN 105515737A CN 201510884143 A CN201510884143 A CN 201510884143A CN 105515737 A CN105515737 A CN 105515737A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1835—Buffer management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a method and a device for saving Harq data by an LTE terminal. The method comprises the steps of receiving the Harq data; judging whether the identification of the Harq data has a mapping space address; if yes and the Harq data is newly transmitted, determining to save the Harq data into the corresponding address space, and setting the state of the address space according to a decoding result, or if yes and the Harq data is re-transmitted, determining to combine the Harq data with data stored in the address space, and setting the state of the address space according to a combined decoding result; if no, searching an idle address space, and, if the idle address space exists, determining to save the Harq data into the idle address space, and setting the state of the address space according to a decoding result, or if the idle address space does not exist, determining to cover the last address space with the Harq data, and setting the state of the last address space according to a decoding result. According to the method provided by the invention, the saving of the Harq data can be achieved with less storage space.
Description
Technical field
The present invention relates to communication technical field, be specifically related to method and device that a kind of LTE terminal preserves Harq data.
Background technology
LTE system is thought 4G (forth generation mobile communication technology) wireless communication system widely, it has the transmission rate of descending 100M (million) up 50M, support higher translational speed (350km/h) and larger coverage radius of cell (100 kilometers) simultaneously, support that 200, every community user is simultaneously online; In addition, LTE system also has band width configuration (1.4M ~ 20M) flexibly, supports the feature such as multi-media broadcasting service and end-to-end QoS; What LTE physical layer adopted is OFDM (OFDM) technology.
Harq (HybridAutomaticRepeatreQuest, hybrid automatic repeat-request) is a kind of technology that forward error correction coding and HARQ are combined and formed, and is generally applied in LTE system.LET system generally needs to support multiple Harq process simultaneously, and this just makes the Harqbuffer (buffer) preserving Harq data in LTE terminal need enough large memory space, realizes the preservation of Harq data; Particularly when LTE system is TDD (TimeDivisionDuplexing, time division duplex) form time, the uplink-downlink configuration of LTE system is 5, and have 15 DL (DownLink, down link) Harq process, as shown in Figure 1, if want these Soft Inform ation of expression that can't harm, memory space so in LTE terminal required for Harqbuffer will be larger, as shown in Figure 2.
For making the Harqbuffer of LTE terminal have larger memory space, so must increase the area of Harqbuffer, and large-area Harqbuffer, by the lifting of the power consumption and cost that cause LTE terminal chip; Therefore, the Harqbuffer as how less memory space realizes the preservation of Harq data, thus reduces power consumption and the cost of LTE terminal chip, becomes the problem that those skilled in the art need solution badly.
Summary of the invention
In view of this, a kind of method that the embodiment of the present invention provides LTE terminal to preserve Harq data and device, realize the preservation of Harq data with the Harqbuffer of less memory space, thus reduce power consumption and the cost of LTE terminal chip.
For achieving the above object, the embodiment of the present invention provides following technical scheme:
A kind of LTE terminal preserves the method for Harq data, in advance according to the transmission mode of LTE, the memory space of Harqbuffer is divided, obtain the address space of the multiple of 8, and the mark of Harq data that the space address of distributing each address space maps, form mapping table; Described method comprises:
Receive Harq data;
According to mapping table described in the identifier lookup that described Harq data are corresponding, judge whether mark corresponding to described Harq data exists the space address of mapping;
If the space address of the mark existence mapping that described Harq data are corresponding, and described Harq data are the data of new transmission, described Harq data are then determined to preserve into address space corresponding to mapped space address, and according to the decode results of described Harq data, the state of described address space is set;
If the space address of the mark existence mapping that described Harq data are corresponding, and described Harq data are data retransmission, then determine described Harq data, the data stored in the address space corresponding with mapped space address merge, and according to the decode results of merging data, the state of described address space is set;
If mark corresponding to described Harq data does not exist the space address of mapping, then search and whether there is idle address space;
If there is idle address space, determine the address space described Harq data preserved into the described free time, and according to the decode results of described Harq data, the state of the address space of described free time is set;
If there is not idle address space, then determine described Harq data cover to enter last address space, and according to the decode results of described Harq data, the state of last address space described is set.
The embodiment of the present invention also provides a kind of LTE terminal to preserve the device of Harq data, comprising:
Space divides module in advance, for the transmission mode in advance according to LTE, divides the memory space of Harqbuffer, obtains the address space of the multiple of 8;
Mapping forward allocator module, the mark of the Harq data that the space address for distributing each address space maps, forming mapping table;
Data reception module, for receiving Harq data;
Map judge module, for mapping table according to identifier lookup corresponding to described Harq data, judge whether mark corresponding to described Harq data exists the space address of mapping;
First preserves determination module, if there is the space address mapped in the mark corresponding for described Harq data, and described Harq data are the data of new transmission, described Harq data are then determined to preserve into address space corresponding to mapped space address, and according to the decode results of described Harq data, the state of described address space is set;
Second preserves determination module, if there is the space address mapped in the mark corresponding for described Harq data, and described Harq data are data retransmission, then determine described Harq data, the data stored in the address space corresponding with mapped space address merge, and according to the decode results of merging data, the state of described address space is set;
Free space searches module, if there is not the space address of mapping for the mark that described Harq data are corresponding, then searches and whether there is idle address space;
3rd preserves determination module, if for there is idle address space, determine the address space described Harq data preserved into the described free time, and according to the decode results of described Harq data, arranges the state of the address space of described free time;
4th preserves determination module, if for there is not idle address space, then determine described Harq data cover to enter last address space, and according to the decode results of described Harq data, arranges the state of last address space described.
Based on technique scheme, the LTE terminal that the embodiment of the present invention provides preserves the method for Harq data, based on dynamic Harqbuffer management strategy, the mapping table of the mark recording the Harq data that each space address maps is safeguarded, realize the Harq data storing any process with the address space of 8 processes simultaneously, the Harq data being greater than 8 processes can be stored by the address space of 8 processes, therefore achieve the preservation of Harq data with less Harqbuffer memory space, reduce power consumption and the cost of LTE terminal chip.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the schematic diagram of DLharq process number corresponding to uplink-downlink configuration different in LTE system;
The schematic diagram of Fig. 2 memory space needed for existing Harqbuffer;
The mapping schematic diagram of the space address that Fig. 3 provides for the embodiment of the present invention and Harq Data Identification;
The flow chart of the method for the LTE terminal preservation Harq data that Fig. 4 provides for the embodiment of the present invention;
Another flow chart of the method for the LTE terminal preservation Harq data that Fig. 5 provides for the embodiment of the present invention;
A flow chart again of the method for the LTE terminal preservation Harq data that Fig. 6 provides for the embodiment of the present invention;
Fig. 7 stores Harq data for adopting existing 6 physics bit, and adopts the embodiment of the present invention to store the memory space contrast schematic diagram of Harq data;
Fig. 8 stores Harq data for adopting existing 6 physics bit, and adopts the embodiment of the present invention to store another memory space contrast schematic diagram of Harq data;
The structured flowchart of the device of the LTE terminal preservation Harq data that Fig. 9 provides for the embodiment of the present invention;
Another structured flowchart of the device of the LTE terminal preservation Harq data that Figure 10 provides for the embodiment of the present invention.
Embodiment
The LTE terminal that the embodiment of the present invention provides preserves the method for Harq data, the Harq data (also can store the Harq data being less than or equal to 8 processes) being greater than 8 processes with the memory space storage of 8 processes, and based on the mode of dynamic Harqbuffer, realize Harq data to the memory space of Harqbuffer coupling stored in;
Nsoft can represent the size of the memory space of Harq Soft Inform ation in LTE system, and when a Soft Inform ation bit represents with 6 physics bit, the storage size of the Harqbuffer of actual physics is Nsoft*6bit, and the present invention Psoft represents this size; Based on this, in the present invention, Nsoft and Psoft all reserves according to 8 process space sizes;
Concrete, the transmission mode of LTE is mainly divided into single-stream transmission pattern and stream transmission pattern, the embodiment of the present invention can according to the transmission mode of LTE, the memory space of Harqbuffer is divided, obtain the address space of the multiple of 8, thus realizing the principle space size reserved with 8 processes, the mark of the Harq data that the space address of each address space of follow-up reallocation maps, forms mapping table;
As when the transmission mode of LTE is stream transmission, a subframe can transmit two transmission blocks, the now maximum data fluxion Kmimo=2 of LTE system, then the Harqbuffer of LTE terminal can first be divided equally into 8 block spaces, each block space represents with Buf_addr-0 ~ Buf_addr-7, divides equally more once each block space meanwhile, it is two spaces that the initial each space divided is divided equally, obtains altogether 16 block address spaces; The space that second time is divided equally, can based on the initial space divided, therefore the initial space divided can be considered as being main storage space, and every block main storage space is divided equally again, it is two block address spaces that every block main storage space is divided equally, to obtain 16 block address spaces; Therefore the address space that second time divides can represent based on the mark of the main storage space at place and the ordinal number in main storage space; Namely the space address of address space can be expressed as Buf_addr-idx1-idx2, wherein the first digit idx1 of Buf_addr-represents the mark of the main storage space at address space place, and second digit idx2 represents the ordinal number mark of address space in the main storage space at place;
Space address as 16 block address spaces is Buf_addr-0-0, Buf_addr-0-1, Buf_addr-1-0, Buf_addr-1-1 ... Buf_addr-7-0, Buf_addr-7-1;
Now, can by the mark of main storage space in space address and ordinal number mark, identify with the Harq process identification (PID) in Harq data and transmission block and map, as under stream transmission pattern, the mark of Harq data can be expressed as Harq-ID_TB-idx, wherein Harq-ID is the mark of Harq process, and TB-idx is the mark of transmission block; With the Harq data instance of 15 processes, then Harq-ID is 0 ~ 14, TB-idx is 0 ~ 1, and the embodiment of the present invention can arrange Buf_addr-idx1-idx2, the Harq-ID_TB-idx mapped; Fig. 3 shows and maps schematic diagram accordingly, can refer to.
Accordingly, due under single-stream transmission pattern, a subframe only transmits a transmission block, and therefore the Harqbuffer of LTE terminal can only be divided equally into 8 block spaces, and space address is Buf_addr-0 ~ Buf_addr-7; Then the mapping relations of installation space address and Harq-ID; As under single-stream transmission pattern, can safeguard the mapping relations of Harq-ID and Buf_addr-idx, wherein Harq-ID is 0 ~ 14, Buf_addr-idx is 0 ~ 7.
Based on the transmission mode in advance according to LTE, the memory space of Harqbuffer is divided, obtain the address space of the multiple of 8, and the mark of Harq data that the space address of distributing each address space maps, form the basis of mapping table; Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The flow chart of the method for the LTE terminal preservation Harq data that Fig. 4 provides for the embodiment of the present invention, the method can be applicable to LTE terminal, and with reference to Fig. 4, the method can comprise:
Step S100, reception Harq data;
Step S110, the identifier lookup mapping table corresponding according to described Harq data, judge whether mark corresponding to described Harq data exists the space address of mapping, if so, perform step S120, if not, performs step S150;
Step S120, judge that whether described Harq data are the data of new transmission, if so, perform step S130, if not, perform step S140;
The judged result of step S120 is yes, and illustrate that described Harq data are the data of new transmission, the judged result of step S120 is no, illustrates that described Harq data are data retransmission.
Step S130, determine described Harq data to preserve into address space corresponding to mapped space address, and according to the decode results of described Harq data, the state of described address space is set;
The embodiment of the present invention also needs the state safeguarding address space in Harqbuffer, as Kmimo=2, safeguards the state of Buf_addr-idx1-idx2, as Kmimo=1, safeguards the state of Buf_addr-idx;
Optionally, the state of address space is mainly arranged according to the decode results of Harq data, if decode results correct (ACK), the state of address space then can be set for idle, to represent that this address space can take for new data, and in described mapping table, delete the mark of described Harq data and the mapping relations of described space address; If decode results mistake (NACK), then the state that can arrange address space is busy, to represent that this address space can not be taken by new data, and keeps the mark of described Harq data and the mapping relations of described space address in the mapping table.
Step S140, determine that, by described Harq data, the former data stored in the address space corresponding with mapped space address merge, and according to the decode results of merging data, the state of described address space is set;
Optionally, if the decode results of described merging data is correct, then the state of described address space is set for the free time, to represent that described address space can be taken by new data, and in described mapping table, delete the mapping relations of mark corresponding to described Harq data and described space address; If the decode results mistake of described merging data, then the state arranging described address space is busy, to represent that described address space can not be taken by new data, and keeps the mark of described Harq data and the mapping relations of described space address in the mapping table.
Step S150, search whether there is idle address space, if so, perform step S160, if not, perform step S170;
Step S160, determine the address space described Harq data preserved into the described free time, and according to the decode results of described Harq data, the state of the address space of described free time is set;
Optionally, if the decode results of described Harq data is correct, then the state of the address space of described free time is set for the free time, to represent that the address space of described free time can be taken by new data; If the decode results mistake of described Harq data, then the state arranging the address space of described free time is busy, and in described mapping table, increases the mapping relations of the space address of mark corresponding to described Harq data and the address space of described free time.
Step S170, determine described Harq data cover to enter last address space, and according to the decode results of described Harq data, the state of last address space described is set.
Optionally, can delete and record in described mapping table, the mapping relations of the mark that the space address of last address space described is with former Harq data corresponding; If the decode results of described Harq data is correct, then the state of last address space described is set for idle; If the decode results mistake of described Harq data, then the state arranging last address space described is busy, and in described mapping table, increases the mapping relations of the space address of mark corresponding to described Harq data and last address space described.
Can find out, the LTE terminal that the embodiment of the present invention provides preserves the method for Harq data, needs in advance according to the transmission mode of LTE, divides the memory space of Harqbuffer, obtain the address space of the multiple of 8, thus address space is reserved according to 8 process space sizes; The mark of the Harq data simultaneously needing the space address of each address space of preassignment to map, forms mapping table; On this basis, LTE terminal is preserved in the process of Harq data, can first receive Harq data; According to mapping table described in the identifier lookup that described Harq data are corresponding, judge whether mark corresponding to described Harq data exists the space address of mapping; If the space address of the mark existence mapping that described Harq data are corresponding, and described Harq data are the data of new transmission, described Harq data are then determined to preserve into address space corresponding to mapped space address, and according to the decode results of described Harq data, the state of described address space is set; If the space address of the mark existence mapping that described Harq data are corresponding, and described Harq data are data retransmission, then determine described Harq data, the former data stored in the address space corresponding with mapped space address merge, and according to the decode results of merging data, the state of described address space is set; If mark corresponding to described Harq data does not exist the space address of mapping, then search and whether there is idle address space; If there is idle address space, then determine the address space described Harq data preserved into the described free time, and according to the decode results of described Harq data, the state of the address space of described free time is set; If there is not idle address space, then determine described Harq data cover to enter last address space, and according to the decode results of described Harq data, the state of last address space described is set.
The LTE terminal that the embodiment of the present invention provides preserves the method for Harq data, based on dynamic Harqbuffer management strategy, the mapping table of the mark recording the Harq data that each space address maps is safeguarded, realize the Harq data storing any process with the address space of 8 processes simultaneously, the Harq data being greater than 8 processes can be stored by the address space of 8 processes, therefore achieve the preservation of Harq data with less Harqbuffer memory space, reduce power consumption and the cost of LTE terminal chip.
Preferably, the LTE terminal that Fig. 5 shows the embodiment of the present invention to be provided preserves another flow chart of the method for Harq data, and with reference to Fig. 5, the method can comprise:
Step S200, when DL scheduled a Harq process, terminal receives corresponding Harq data;
Step S210, by mapping table, judge whether mark corresponding to described Harq data exists the space address of mapping, if so, perform step S220, if not, perform step S310;
Concrete, mapping table can be searched to the TB of this Harq process, judge whether the space address that there are mapping relations.
Step S220, judge that whether described Harq data are the data of new transmission, if so, perform step S230, if not, perform step S270;
Step S230, determine described Harq data to preserve into address space corresponding to mapped space address, and send to decoding to decoding module;
Step S240, judge that decode results is whether correct, if so, perform step S250, if not, perform step S260;
Step S250, address space is set state for idle, delete the mark of described Harq data and the mapping relations of described space address in the mapping table;
Step S260, the state arranging address space are busy, keep the mark of described Harq data and the mapping relations of described space address in the mapping table;
Step S270, determine the former data in described Harq data and described space address to merge, and send to merging decoding to decoding module;
Step S280, judge that the decode results of described merging decoding is whether correct, if so, perform step S290, if not, perform step S300;
Step S290, described address space is set state for idle, delete the mark of described Harq data and the mapping relations of described space address in the mapping table;
Step S300, the state arranging described address space are busy, keep the mark of described Harq data and the mapping relations of described space address in the mapping table;
Step S310, search whether there is idle address space, if so, perform step S320, if not, perform step S360;
Step S320, determine the address space described Harq data preserved into the described free time, and send to decoding to decoding module;
Step S330, judge that decode results is whether correct, if so, perform step S340, if not, perform step S350;
Step S340, the state of address space of described free time is set for idle;
Step S350, the state arranging the address space of described free time are busy, and in described mapping table, increase the mark that described Harq data are corresponding, with the mapping relations of the space address of the address space of described free time;
Step S360, determine described Harq data cover to enter last address space, delete and to record in described mapping table, the mapping relations of the mark that the space address of last address space described is corresponding with stored former Harq data, and send to decoding to decoding module;
Step S370, judge that decode results is whether correct, if so, perform step S380, if not, perform step S390;
Step S380, the state of last address space described is set for idle;
Step S390, the state arranging last address space described are busy, and in described mapping table, increase the mapping relations of the space address of mark corresponding to described Harq data and last address space described.
Optionally, when the transmission mode of LTE is stream transmission pattern, in advance according to the transmission mode of LTE, divide the memory space of Harqbuffer, the mode obtaining the address space of the multiple of 8 can be:
The memory space of Harqbuffer is divided equally into 8 pieces, obtains 8 pieces of main storage space, once divide equally every block main storage space again, it is two block address spaces that every block main storage space is divided equally, to obtain 16 block address spaces; Wherein, the mark of the space address of each address space is by the mark of the main storage space at address space place, and the ordinal number mark of address space in the main storage space at place is formed, as Buf_addr-idx1-idx2;
Accordingly, the mode of the mark of the Harq data that the space address of distributing each address space maps can be:
For the space address of each address space, by the mark of main storage space in space address and ordinal number mark, identify with the Harq process identification (PID) in Harq data and transmission block and map.
Optionally, when the transmission mode of LTE is single-stream transmission pattern, in advance according to the transmission mode of LTE, divide the memory space of Harqbuffer, the mode obtaining the address space of the multiple of 8 can be:
The memory space of Harqbuffer is divided equally into 8 pieces, obtains 8 block address spaces, wherein, the mark of the space address of each address space is represented, as Buf_addr-idx by the ordinal number of address space;
Accordingly, the mode of the mark of the Harq data that the space address of distributing each address space maps can be:
For the space address of each address space, the Harq process identification (PID) in the mark of space address and Harq data is mapped.
Optionally, after carrying out demodulation to received Harq data, the Soft Inform ation obtained can represent with 6 physics bit (bit); Usual Harqbuffer memory space all adopts 6 physics bit to represent a Soft Inform ation bit, and the embodiment of the present invention can according to the innovate and optimize of the performance simulation of reality and Stored Procedure, when the faint loss of performance, employing is less than 6 physical message bit and represents that a Soft Inform ation bit stores, thus Harqbuffer memory space is saved further;
Optionally, the embodiment of the present invention can represent that a Soft Inform ation bit stores by b physical message bit, and b is less than 6; Concrete, the LTE terminal that Fig. 6 shows the embodiment of the present invention to be provided preserves a flow chart again of the method for Harq data, the method is applicable to preserves Harq data in the process of Harqbuffer (as there is the space address mapped in Harq data, and Harq data are data or the data retransmission of new transmission, after determining that Harq data are preserved the address space of Harqbuffer; And for example there is not the space address of mapping in Harq data, and there is idle address space or there is not idle address space, after determining that Harq data are preserved the address space of Harqbuffer), with reference to Fig. 6, the method can comprise:
If step S400 Harq data are the data of new transmission, then to described Harq decoding data, and remove the low a position bit of described Harq data, the Soft Inform ation of Harq data is represented with b physics bit, the described Harq data represented with b physics bit are preserved into Harqbuffer, wherein a and b's and be 6;
If step S410 Harq data are data retransmission, the data stored in the address space that the space address that the mark of then taking out described Harq data maps is corresponding, move to left the data of taking-up a position bit, the bit zero padding of low a position, makes the data of taking out revert to 6 physics bit by b physics bit;
Step S420, will the data of the taking-up of 6 physics bit be reverted to, merge with described Harq data;
Step S430, be combined after decoding data, and remove the low a position bit of the data after merging, the Soft Inform ation of the data after merging represented with b physics bit, the data after the described merging represented with b physics bit are preserved into Harqbuffer.
Take b as 4bit be example, after the Harq data that demodulation rate-matched receives, the data of 6bit can be obtained; Then judge whether these data are the new data transmitted, if, low 2 bit of described Harq data remove to described Harq decoding data, the Soft Inform ation of Harq data is represented with 4 physics bit, is then stored in the corresponding address space of Harqbuffer; If these data are not the data of new transmission, for data retransmission, the data stored in the address space then needing the mark of taking out these data to map, move to left the data of taking-up 2 bit, low 2 bit zero paddings, the data of taking out are made to revert to 6 physics bit by 4 physics bit, then the data of the taking-up of 6 physics bit will be reverted to, merge with Harq data, decoding data after being combined, and remove low 2 bit of the data after merging, the Soft Inform ation of the data after merging is represented with 4 physics bit, and preserves in Harqbuffer.
Obviously, b also can be the numerical value that 5bit or 3bit etc. is less than 6bit, Fig. 7 and Fig. 8 shows and adopt existing 6 physics bit to store Harq data, and the memory space of the scheme storage Harq data adopting the embodiment of the present invention to provide contrasts schematic diagram, can refer to.
The LTE terminal that the embodiment of the present invention provides preserves the method for Harq data, achieves the preservation of Harq data, reduce power consumption and the cost of LTE terminal chip with less Harqbuffer memory space.
The device that the LTE terminal provided the embodiment of the present invention below preserves Harq data is introduced, and the device that LTE terminal described below preserves Harq data can preserve the mutual corresponding reference of method of Harq data with above-described LTE terminal.
The structured flowchart of the device of the LTE terminal preservation Harq data that Fig. 9 provides for the embodiment of the present invention, this device can be applicable to LTE terminal, and with reference to Fig. 9, this device can comprise:
Space divides module 100 in advance, for the transmission mode in advance according to LTE, divides the memory space of Harqbuffer, obtains the address space of the multiple of 8;
Mapping forward allocator module 200, the mark of the Harq data that the space address for distributing each address space maps, forming mapping table;
Data reception module 300, for receiving Harq data;
Map judge module 400, for mapping table according to identifier lookup corresponding to described Harq data, judge whether mark corresponding to described Harq data exists the space address of mapping;
First preserves determination module 500, if there is the space address mapped in the mark corresponding for described Harq data, and described Harq data are the data of new transmission, described Harq data are then determined to preserve into address space corresponding to mapped space address, and according to the decode results of described Harq data, the state of described address space is set;
Second preserves determination module 600, if there is the space address mapped in the mark corresponding for described Harq data, and described Harq data are data retransmission, then determine described Harq data, the former data stored in the address space corresponding with mapped space address merge, and according to the decode results of merging data, the state of described address space is set;
Free space searches module 700, if there is not the space address of mapping for the mark that described Harq data are corresponding, then searches and whether there is idle address space;
3rd preserves determination module 800, if for there is idle address space, determine the address space described Harq data preserved into the described free time, and according to the decode results of described Harq data, arranges the state of the address space of described free time;
4th preserves determination module 900, if for the address space of not Existential Space, then determine described Harq data cover to enter last address space, and according to the decode results of described Harq data, arranges the state of last address space described.
Optionally, first preserves determination module 500 in the decode results according to described Harq data, the aspect of the state of described address space is set, specifically can be used for, if the decode results of described Harq data is correct, the state then arranging described address space, for idle, to represent that described address space can be taken by new data, and deletes the mark of described Harq data and the mapping relations of described space address in described mapping table; If the decode results mistake of described Harq data, then the state arranging described address space is busy, to represent that described address space can not be taken by new data, and keeps the mark of described Harq data and the mapping relations of described space address in the mapping table;
Second preserves determination module 600 in the decode results according to merging data, the aspect of the state of described address space is set, specifically can be used for, if the decode results of described merging data is correct, the state of described address space is then set for idle, to represent that described address space can be taken by new data, and in described mapping table, delete the mapping relations of mark corresponding to described Harq data and described space address; If the decode results mistake of described merging data, then the state arranging described address space is busy, to represent that described address space can not be taken by new data, and keeps the mark of described Harq data and the mapping relations of described space address in the mapping table;
3rd preserves determination module 800 in the decode results according to described Harq data, the aspect of the state of the address space of described free time is set, specifically can be used for, if the decode results of described Harq data is correct, the state of the address space of described free time is then set for the free time, to represent that described address space can be taken by new data; If the decode results mistake of described Harq data, then the state arranging the address space of described free time is busy, and in described mapping table, increases the mapping relations of the space address of mark corresponding to described Harq data and the address space of described free time;
4th preserves determination module 900 in the decode results according to described Harq data, the aspect of the state of last address space described is set, specifically can be used for, delete and record in described mapping table, the mapping relations of the mark that the space address of last address space described is with stored former Harq data corresponding; If the decode results of described Harq data is correct, then the state of last address space described is set for idle; If the decode results mistake of described Harq data, then the state arranging last address space described is busy, and in described mapping table, increases the mapping relations of the space address of mark corresponding to described Harq data and last address space described.
Optionally, space divides module 100 in advance and specifically can be used for, if the transmission mode of LTE is stream transmission pattern, then the memory space of Harqbuffer is divided equally into 8 pieces, obtain 8 pieces of main storage space, once divide equally every block main storage space, it is two block address spaces that every block main storage space is divided equally, to obtain 16 block address spaces again; Wherein, the mark of the space address of each address space is by the mark of the main storage space at address space place, and the ordinal number mark of address space in the main storage space at place is formed;
Accordingly, map forward allocator module 200 and specifically can be used for, for the space address of each address space, by the mark of main storage space in space address and described ordinal number mark, identify with the Harq process identification (PID) in Harq data and transmission block and map.
On the other hand, space divides module 100 in advance and specifically can be used for, if the transmission mode of LTE is single-stream transmission pattern, then the memory space of Harqbuffer is divided equally into 8 pieces, obtain 8 block address spaces, wherein, the mark of the space address of each address space is represented by the ordinal number of address space;
Accordingly, map forward allocator module 200 and specifically can be used for, for the space address of each address space, the Harq process identification (PID) in the mark of space address and Harq data is mapped.
Optionally, another structured flowchart of the device of the LTE terminal preservation Harq data that Figure 10 provides for the embodiment of the present invention, shown in composition graphs 9 and Figure 10, this device can also comprise:
First specimens preserving module 1000, if for the data that described Harq data are new transmission, then to described Harq decoding data, and remove the low a position bit of described Harq data, the Soft Inform ation of Harq data is represented with b physics bit, the described Harq data represented with b physics bit are preserved into Harqbuffer, wherein a and b's and be 6;
Second specimens preserving module 1100, if be data retransmission for described Harq data, the data stored in the address space that the space address that the mark of then taking out described Harq data maps is corresponding, move to left the data of taking-up a position bit, the bit zero padding of low a position, makes the data of taking out revert to 6 physics bit by b physics bit; To the data of the taking-up of 6 physics bit be reverted to, merge with described Harq data; Decoding data after being combined, and the low a position bit removing the data after merging, make the Soft Inform ation of data after merging represent with b physics bit, to preserve the data after the described merging represented with b physics bit into Harqbuffer.
The LTE terminal that the embodiment of the present invention provides preserves the device of Harq data, can achieve the preservation of Harq data, reduce power consumption and the cost of LTE terminal chip with less Harqbuffer memory space.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Professional can also recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. LTE terminal preserves a method for Harq data, it is characterized in that, in advance according to the transmission mode of LTE, the memory space of Harqbuffer is divided, obtain the address space of the multiple of 8, and the mark of Harq data that the space address of distributing each address space maps, form mapping table; Described method comprises:
Receive Harq data;
According to mapping table described in the identifier lookup that described Harq data are corresponding, judge whether mark corresponding to described Harq data exists the space address of mapping;
If the space address of the mark existence mapping that described Harq data are corresponding, and described Harq data are the data of new transmission, described Harq data are then determined to preserve into address space corresponding to mapped space address, and according to the decode results of described Harq data, the state of described address space is set;
If the space address of the mark existence mapping that described Harq data are corresponding, and described Harq data are data retransmission, then determine described Harq data, the data stored in the address space corresponding with mapped space address merge, and according to the decode results of merging data, the state of described address space is set;
If mark corresponding to described Harq data does not exist the space address of mapping, then search and whether there is idle address space;
If there is idle address space, determine the address space described Harq data preserved into the described free time, and according to the decode results of described Harq data, the state of the address space of described free time is set;
If there is not idle address space, then determine described Harq data cover to enter last address space, and according to the decode results of described Harq data, the state of last address space described is set.
2. LTE terminal according to claim 1 preserves the method for Harq data, and it is characterized in that, the described decode results according to described Harq data, the state arranging described address space comprises:
If the decode results of described Harq data is correct, then the state arranging described address space, for idle, to represent that described address space can be taken by new data, and deletes the mark of described Harq data and the mapping relations of described space address in described mapping table; If the decode results mistake of described Harq data, then the state arranging described address space is busy, to represent that described address space can not be taken by new data, and keeps the mark of described Harq data and the mapping relations of described space address in the mapping table;
The described decode results according to merging data, the state arranging described address space comprises:
If the decode results of described merging data is correct, the state of described address space is then set for idle, to represent that described address space can be taken by new data, and in described mapping table, delete the mapping relations of mark corresponding to described Harq data and described space address; If the decode results mistake of described merging data, then the state arranging described address space is busy, to represent that described address space can not be taken by new data, and keeps the mark of described Harq data and the mapping relations of described space address in the mapping table;
The described decode results according to described Harq data, the state arranging the address space of described free time comprises:
If the decode results of described Harq data is correct, then the state of the address space of described free time is set for the free time, to represent that described address space can be taken by new data; If the decode results mistake of described Harq data, then the state arranging the address space of described free time is busy, and in described mapping table, increases the mapping relations of the space address of mark corresponding to described Harq data and the address space of described free time;
The described decode results according to described Harq data, the state arranging last address space described comprises:
Delete and record in described mapping table, the mapping relations of the mark that the space address of last address space described is with stored former Harq data corresponding;
If the decode results of described Harq data is correct, then the state of last address space described is set for idle; If the decode results mistake of described Harq data, then the state arranging last address space described is busy, and in described mapping table, increases the mapping relations of the space address of mark corresponding to described Harq data and last address space described.
3. LTE terminal according to claim 1 and 2 preserves the method for Harq data, it is characterized in that, describedly divides in advance according to the transmission mode of LTE the memory space of Harqbuffer, and the address space obtaining the multiple of 8 comprises:
If the transmission mode of LTE is stream transmission pattern, then the memory space of Harqbuffer is divided equally into 8 pieces, obtains 8 pieces of main storage space, every block main storage space is once divided equally again, it is two block address spaces that every block main storage space is divided equally, to obtain 16 block address spaces;
Wherein, the mark of the space address of each address space is by the mark of the main storage space at address space place, and address space ordinal number mark in the main storage space at place is formed;
The mark of the Harq data that the space address of each address space of described distribution maps comprises:
For the space address of each address space, by the mark of main storage space in space address and described ordinal number mark, identify with the Harq process identification (PID) in Harq data and transmission block and map.
4. LTE terminal according to claim 1 and 2 preserves the method for Harq data, it is characterized in that, describedly divides in advance according to the transmission mode of LTE the memory space of Harqbuffer, and the address space obtaining the multiple of 8 comprises:
If the transmission mode of LTE is single-stream transmission pattern, then the memory space of Harqbuffer is divided equally into 8 pieces, obtains 8 block address spaces, wherein, the mark of the space address of each address space is represented by the ordinal number of address space;
The mark of the Harq data that the space address of each address space of described distribution maps comprises:
For the space address of each address space, the Harq process identification (PID) in the mark of space address and Harq data is mapped.
5. LTE terminal according to claim 1 and 2 preserves the method for Harq data, and it is characterized in that, after carrying out demodulation to received Harq data, the Soft Inform ation obtained represents with 6 physics bit; Described method also comprises:
If described Harq data are the data of new transmission, then to described Harq decoding data, and remove the low a position bit of described Harq data, the Soft Inform ation of Harq data is represented with b physics bit, the described Harq data represented with b physics bit are preserved into Harqbuffer, wherein a and b's and be 6;
If described Harq data are data retransmission, the data stored in the address space that the space address that the mark of then taking out described Harq data maps is corresponding, move to left the data of taking-up a position bit, the bit zero padding of low a position, makes the data of taking out revert to 6 physics bit by b physics bit;
To the data of the taking-up of 6 physics bit be reverted to, merge with described Harq data;
Decoding data after being combined, and the low a position bit removing the data after merging, make the Soft Inform ation of data after merging represent with b physics bit, to preserve the data after the described merging represented with b physics bit into Harqbuffer.
6. LTE terminal preserves a device for Harq data, it is characterized in that, comprising:
Space divides module in advance, for the transmission mode in advance according to LTE, divides the memory space of Harqbuffer, obtains the address space of the multiple of 8;
Mapping forward allocator module, the mark of the Harq data that the space address for distributing each address space maps, forming mapping table;
Data reception module, for receiving Harq data;
Map judge module, for mapping table according to identifier lookup corresponding to described Harq data, judge whether mark corresponding to described Harq data exists the space address of mapping;
First preserves determination module, if there is the space address mapped in the mark corresponding for described Harq data, and described Harq data are the data of new transmission, described Harq data are then determined to preserve into address space corresponding to mapped space address, and according to the decode results of described Harq data, the state of described address space is set;
Second preserves determination module, if there is the space address mapped in the mark corresponding for described Harq data, and described Harq data are data retransmission, then determine described Harq data, the data stored in the address space corresponding with mapped space address merge, and according to the decode results of merging data, the state of described address space is set;
Free space searches module, if there is not the space address of mapping for the mark that described Harq data are corresponding, then searches and whether there is idle address space;
3rd preserves determination module, if for there is idle address space, determine the address space described Harq data preserved into the described free time, and according to the decode results of described Harq data, arranges the state of the address space of described free time;
4th preserves determination module, if for there is not idle address space, then determine described Harq data cover to enter last address space, and according to the decode results of described Harq data, arranges the state of last address space described.
7. LTE terminal according to claim 6 preserves the device of Harq data, it is characterized in that, described first preserves determination module in the decode results according to described Harq data, the aspect of the state of described address space is set, specifically for, if the decode results of described Harq data is correct, the state of described address space is then set for idle, to represent that described address space can be taken by new data, and in described mapping table, delete the mark of described Harq data and the mapping relations of described space address; If the decode results mistake of described Harq data, then the state arranging described address space is busy, to represent that described address space can not be taken by new data, and keeps the mark of described Harq data and the mapping relations of described space address in the mapping table;
Described second preserves determination module in the decode results according to merging data, the aspect of the state of described address space is set, specifically for, if the decode results of described merging data is correct, the state of described address space is then set for idle, to represent that described address space can be taken by new data, and in described mapping table, delete the mapping relations of mark corresponding to described Harq data and described space address; If the decode results mistake of described merging data, then the state arranging described address space is busy, to represent that described address space can not be taken by new data, and keeps the mark of described Harq data and the mapping relations of described space address in the mapping table;
Described 3rd preserves determination module in the decode results according to described Harq data, the aspect of the state of the address space of described free time is set, specifically for, if the decode results of described Harq data is correct, the state of the address space of described free time is then set for the free time, to represent that described address space can be taken by new data; If the decode results mistake of described Harq data, then the state arranging the address space of described free time is busy, and in described mapping table, increases the mapping relations of the space address of mark corresponding to described Harq data and the address space of described free time;
Described 4th preserves determination module in the decode results according to described Harq data, the aspect of the state of last address space described is set, specifically for, delete and record in described mapping table, the mapping relations of the mark that the space address of last address space described is with stored former Harq data corresponding; If the decode results of described Harq data is correct, then the state of last address space described is set for idle; If the decode results mistake of described Harq data, then the state arranging last address space described is busy, and in described mapping table, increases the mapping relations of the space address of mark corresponding to described Harq data and last address space described.
8. the LTE terminal according to claim 6 or 7 preserves the device of Harq data, it is characterized in that, described space divide in advance module specifically for, if the transmission mode of LTE is stream transmission pattern, then the memory space of Harqbuffer is divided equally into 8 pieces, obtains 8 pieces of main storage space, every block main storage space is once divided equally again, it is two block address spaces that every block main storage space is divided equally, to obtain 16 block address spaces; Wherein, the mark of the space address of each address space is by the mark of the main storage space at address space place, and address space ordinal number mark in the main storage space at place is formed;
Described mapping forward allocator module specifically for, for the space address of each address space, by the mark of main storage space in space address and described ordinal number mark, identify with the Harq process identification (PID) in Harq data and transmission block and map.
9. the LTE terminal according to claim 6 or 7 preserves the device of Harq data, it is characterized in that, described space divide in advance module specifically for, if the transmission mode of LTE is single-stream transmission pattern, then the memory space of Harqbuffer is divided equally into 8 pieces, obtain 8 block address spaces, wherein, the mark of the space address of each address space is represented by the ordinal number of address space;
Described mapping forward allocator module specifically for, for the space address of each address space, the Harq process identification (PID) in the mark of space address and Harq data is mapped.
10. LTE terminal according to claim 6 preserves the device of Harq data, and it is characterized in that, described device also comprises:
First specimens preserving module, if for the data that described Harq data are new transmission, then to described Harq decoding data, and remove the low a position bit of described Harq data, the Soft Inform ation of Harq data is represented with b physics bit, the described Harq data represented with b physics bit are preserved into Harqbuffer, wherein a and b's and be 6;
Second specimens preserving module, if be data retransmission for described Harq data, the data stored in the address space that the space address that the mark of then taking out described Harq data maps is corresponding, move to left the data of taking-up a position bit, the bit zero padding of low a position, makes the data of taking out revert to 6 physics bit by b physics bit; To the data of the taking-up of 6 physics bit be reverted to, merge with described Harq data; Decoding data after being combined, and the low a position bit removing the data after merging, make the Soft Inform ation of data after merging represent with b physics bit, to preserve the data after the described merging represented with b physics bit into Harqbuffer.
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