CN105515737B - A kind of LTE terminal preserves the method and device of Harq data - Google Patents
A kind of LTE terminal preserves the method and device of Harq data Download PDFInfo
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- CN105515737B CN105515737B CN201510884143.8A CN201510884143A CN105515737B CN 105515737 B CN105515737 B CN 105515737B CN 201510884143 A CN201510884143 A CN 201510884143A CN 105515737 B CN105515737 B CN 105515737B
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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
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Abstract
The application provides a kind of method and device of LTE terminal preservation Harq data, and method includes：Receive Harq data；Judge the space address of Harq data identified whether in the presence of mapping；If, and Harq data are new biography, it determines and Harq data is saved into corresponding address space, according to decoding as a result, the state of address space is arranged, if, and Harq data are to retransmit, determination mutually merges Harq data with the data stored in address space, and the state as a result, setting address space is decoded according to merging；If not, search idle address space, if in the presence of, it determines and Harq data is saved into idle address space, according to decoding as a result, the state of the idle address space of setting, if being not present, it determines and Harq data covers is entered into the last one address space, according to decoding as a result, the state of the last one address space is arranged.The application can smaller memory space realize the preservations of Harq data.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of LTE terminal preserves the method and device of Harq data.
Background technology
LTE system is widely considered 4G (fourth generation mobile communication technology) wireless communication system, it has downlink
The transmission rate of 100M (million) uplinks 50M, while supporting the coverage radius of cell of higher movement speed (350km/h) and bigger
(100 kilometers) are supported online simultaneously per 200 users of cell；In addition to this, LTE system also has flexible band width configuration
The features such as (1.4M~20M), support multi-media broadcasting service and end-to-end QoS；LTE physical layers are using OFDM (orthogonal frequencies
Divide multiplexing) technology.
Harq (Hybrid Automatic Repeat reQuest, hybrid automatic repeat-request) be it is a kind of by preceding to entangling
Miscoding and automatic repeat request are combined and the technology that is formed, is commonly utilized in LTE system.LET systems generally require together
When support multiple Harq processes, this allow in LTE terminal preserve Harq data Harq buffer (buffer) need foot
Enough big memory spaces, to realize the preservation of Harq data；Especially when LTE system is TDD (Time Division
Duplexing, time division duplex) form when, the uplink-downlink configuration of LTE system is 5, and shares 15 DL (Down Link, downlinks
Link) Harq processes, as shown in Figure 1, if it is desired to these Soft Inform ations of lossless expression, then Harq buffer institutes in LTE terminal
The memory space needed is by bigger, as shown in Figure 2.
To make the Harq buffer of LTE terminal that there is larger memory space, then Harq must be increased
The area of buffer, and the Harq buffer of large area will lead to the promotion of the power consumption and cost of LTE terminal chip；Therefore,
If the Harq buffer of how smaller memory space realize the preservation of Harq data, to reduce LTE terminal chip power consumption and
Cost, the problem of becoming those skilled in the art's urgent need to resolve.
Invention content
In view of this, the embodiment of the present invention provides a kind of method and device of LTE terminal preservation Harq data, deposited with smaller
The Harq buffer for storing up space realize the preservation of Harq data, to reduce the power consumption and cost of LTE terminal chip.
To achieve the above object, the embodiment of the present invention provides the following technical solutions：
A kind of method that LTE terminal preserves Harq data deposits Harq buffer previously according to the transmission mode of LTE
Storage space is divided, and obtains the address space of 8 multiple, and distribute the space address mapped Harq numbers of each address space
According to mark, formed mapping table；The method includes：
Receive Harq data；
According to mapping table described in the corresponding identifier lookup of the Harq data, judge that the corresponding mark of the Harq data is
The no space address that there is mapping；
If the Harq data are corresponding to identify the space address that there is mapping, and the Harq data are newly transmitted
Data, it is determined that the Harq data are saved into the corresponding address space of mapped space address, and according to the Harq
The decoding of data is as a result, be arranged the state in described address space；
If the Harq data are corresponding to identify the space address that there is mapping, and the Harq data are to retransmit number
According to, it is determined that by the Harq data, the data stored in address space corresponding with mapped space address merge,
And according to the decoding of merging data as a result, the state in setting described address space；
If corresponding identify of the Harq data is searched whether there is no the space address of mapping in the presence of idle ground
Location space；
If there is idle address space, the address space that the Harq data are saved into the free time, and root are determined
According to the decoding of the Harq data as a result, the state of the address space of the free time is arranged；
If there is no idle address spaces, it is determined that the Harq data covers are entered into the last one address space, and
According to the decoding of the Harq data as a result, the state of setting the last one address space.
The embodiment of the present invention also provides a kind of device of LTE terminal preservation Harq data, including：
The pre- division module in space carries out the memory space of Harq buffer for the transmission mode previously according to LTE
It divides, obtains the address space of 8 multiple；
Map forward allocator module, the mark of the space address mapped Harq data for distributing each address space, shape
At mapping table；
Data reception module, for receiving Harq data；
Judgment module is mapped, for according to mapping table described in the corresponding identifier lookup of the Harq data, described in judgement
The corresponding space address identified whether in the presence of mapping of Harq data；
First preserves determining module, if there is the space address of mapping for the corresponding mark of the Harq data, and
The Harq data are the data newly transmitted, it is determined that it is corresponding that the Harq data are saved into mapped space address
Location space, and according to the decoding of the Harq data as a result, the state in setting described address space；
Second preserves determining module, if there is the space address of mapping for the corresponding mark of the Harq data, and
The Harq data are to retransmit data, it is determined that by the Harq data, address space corresponding with mapped space address
The data of middle storage merge, and according to the decoding of merging data as a result, the state in setting described address space；
Free space searching module, if the space address of mapping is not present for the corresponding mark of the Harq data,
It then searches whether in the presence of idle address space；
Third preserves determining module, if for there is idle address space, determining the Harq data being saved into institute
Idle address space is stated, and according to the decoding of the Harq data as a result, the state of the address space of the setting free time；
4th preserves determining module, if for there is no idle address spaces, it is determined that by the Harq data covers
Enter the last one address space, and according to the decoding of the Harq data as a result, the shape of setting the last one address space
State.
Based on the above-mentioned technical proposal, the method that LTE terminal provided in an embodiment of the present invention preserves Harq data, based on dynamic
Harq buffer management strategies have the mapping table of the mark of each space address mapped Harq data to safeguard record,
The Harq data that arbitrary process is stored with the address space of 8 processes are realized simultaneously so that the Harq data more than 8 processes can lead to
The address space for crossing 8 processes is stored, therefore the guarantor of Harq data is realized with smaller Harq buffer memory spaces
It deposits, reduces the power consumption and cost of LTE terminal chip.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 be in LTE system different corresponding DL harq of uplink-downlink configuration into the schematic diagram of number of passes；
Fig. 2 is the schematic diagram of memory space needed for existing Harq buffer；
Fig. 3 is the mapping schematic diagram of space address provided in an embodiment of the present invention and Harq Data Identifications；
Fig. 4 is the flow chart for the method that LTE terminal provided in an embodiment of the present invention preserves Harq data；
Fig. 5 is another flow chart for the method that LTE terminal provided in an embodiment of the present invention preserves Harq data；
Fig. 6 is the another flow chart for the method that LTE terminal provided in an embodiment of the present invention preserves Harq data；
Fig. 7 is to store Harq data, and depositing using storage Harq data of the embodiment of the present invention using existing 6 physics bit
Store up spatial contrast schematic diagram；
Fig. 8 is to store Harq data using existing 6 physics bit, and store the another of Harq data using the embodiment of the present invention
One memory space contrast schematic diagram；
Fig. 9 is the structure diagram for the device that LTE terminal provided in an embodiment of the present invention preserves Harq data；
Figure 10 is another structure diagram for the device that LTE terminal provided in an embodiment of the present invention preserves Harq data.
Specific implementation mode
The method that LTE terminal provided in an embodiment of the present invention preserves Harq data is big with the memory space storage of 8 processes
In the Harq data (the Harq data less than or equal to 8 processes can also be stored) of 8 processes, and it is based on dynamic Harq buffer
Mode, realize Harq data to the memory space of Harq buffer matching be stored in；
Nsoft can indicate the size of the memory space of Harq Soft Inform ations in LTE system, when a Soft Inform ation bit is with 6
When physics bit is indicated, the storage size of the Harq buffer of actual physics is Nsoft*6bit, present invention Psoft tables
Show the size；Based on this, in the present invention, Nsoft and Psoft are reserved according to 8 process space sizes；
Specifically, the transmission mode of LTE is broadly 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 Harq buffer is divided, obtains the address space of 8 multiple, to
It realizes and carries out reserved principle to space size with 8 processes, the space address mapped for each address space of subsequently reallocating
The mark of Harq data forms mapping table；
Such as when the transmission mode of LTE is stream transmission, a subframe can transmit two transmission blocks, at this time LTE system
Maximum data fluxion Kmimo=2, then the Harq buffer of LTE terminal can first be divided equally into 8 block spaces, each block space is with Buf_
Addr-0~Buf_addr-7 expressions, meanwhile, each block space is divided equally once again so that each space initially divided is bisected into
Two spaces, one is obtained 16 block address spaces；The space divided equally for the second time, can based on the space initially divided, therefore initially
The space of division can be considered as main storage space, and every piece of main storage space is divided equally again so that every piece of main storage space quilt
Two block address spaces are bisected into, to obtain 16 block address spaces；Therefore second of address space divided can be based on the master at place
The mark of memory space and the ordinal number in main storage space indicate；I.e. the space address of address space can be expressed as Buf_
The first digit idx1 of addr-idx1-idx2, wherein Buf_addr- indicate the mark of the main storage space where address space
Know, second digit idx2 indicates ordinal number mark of the address space in the main storage space at place；
If the space address in 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；
At this point, the mark of main storage space in space address and ordinal number can be identified, with the Harq processes in Harq data
Mark and transmission block identification are mapped, as the mark of Harq data under stream transmission pattern can be expressed as Harq-ID_TB-
Idx, wherein Harq-ID are the mark of Harq processes, and TB-idx is the mark of transmission block；With the Harq data instances of 15 processes,
It is 0~1 that then Harq-ID, which is 0~14, TB-idx, and Buf_addr-idx1-idx2, mapped can be arranged in the embodiment of the present invention
Harq-ID_TB-idx；Fig. 3 shows corresponding mapping schematic diagram, can refer to.
Correspondingly, due under single-stream transmission pattern, a subframe only transmits a transmission block, therefore the Harq of LTE terminal
Buffer can only be divided equally into 8 block spaces, and space address is Buf_addr-0~Buf_addr-7；Then installation space address with
The mapping relations of Harq-ID；Under single-stream transmission pattern, the mapping relations of Harq-ID and Buf_addr-idx can be safeguarded,
Wherein Harq-ID is that 0~14, Buf_addr-idx is 0~7.
Based on the transmission mode previously according to LTE, the memory space of Harq buffer is divided, obtains 8 multiple
Address space, and distribute the mark of the space address mapped Harq data of each address space, form the basis of mapping table；
Following will be combined with the drawings in the embodiments of the present invention, and technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Fig. 4 is the flow chart for the method that LTE terminal provided in an embodiment of the present invention preserves Harq data, and this method can be applied
In LTE terminal, with reference to Fig. 4, this method may include：
Step S100, Harq data are received；
Step S110, according to the corresponding identifier lookup mapping table of the Harq data, judge that the Harq data are corresponding
The space address in the presence of mapping is identified whether, if so, step S120 is executed, if it is not, executing step S150；
Step S120, judge whether the Harq data are the data newly transmitted, if so, step S130 is executed, if it is not, holding
Row step S140；
The judging result of step S120 is yes, illustrates that the Harq data are the data newly transmitted, the judgement of step S120
As a result it is no, illustrates that the Harq data are to retransmit data.
Step S130, it determines and the Harq data is saved into the corresponding address space of mapped space address, and root
According to the decoding of the Harq data as a result, the state in described address space is arranged；
The embodiment of the present invention also needs to safeguard the state of address space in Harq buffer, such as Kmimo=2, safeguards
The state of Buf_addr-idx1-idx2 safeguards the state of Buf_addr-idx as Kmimo=1；
Optionally, the state of address space is mainly arranged according to the decoding result of Harq data, if decoding result is correct
(ACK), then the state that address space can be arranged is the free time, to indicate that the address space can be new data occupancy, and described
The mapping relations of the mark and the space address of the Harq data are deleted in mapping table；If decoding result mistake
(NACK), then the state that address space can be arranged is busy, to indicate that the address space cannot be occupied by new data, and is being mapped
The mapping relations of the mark and the space address of the Harq data are kept in table.
Step S140, it determines the Harq data, is stored in address space corresponding with mapped space address
Former data merge, and according to the decoding of merging data as a result, the state in setting described address space；
Optionally, if the decoding result of the merging data is correct, the state that described address space is arranged is the free time,
To indicate that described address space can be occupied by new data, and in the mapping table, the corresponding mark of the Harq data is deleted
With the mapping relations of the space address；If the decoding result mistake of the merging data, is arranged described address space
State is busy, to indicate that described address space can not be occupied by new data, and keeps the Harq data in the mapping table
The mapping relations of mark and the space address.
Step S150, it searches whether in the presence of idle address space, if so, step S160 is executed, if it is not, executing step
S170；
Step S160, the address space that the Harq data are saved into the free time is determined, and according to the Harq numbers
According to decoding as a result, the address space of setting free time state；
Optionally, if the decoding result of the Harq data is correct, the state of the address space of the free time is set
For the free time, to indicate that the address space of the free time can be occupied by new data；If the decoding result mistake of the Harq data,
The state that the address space of the free time is then arranged is busy, and in the mapping table, it is corresponding to increase the Harq data
The mapping relations of mark and the space address of the address space of the free time.
Step S170, it determines and the Harq data covers is entered into the last one address space, and according to the Harq data
Decoding as a result, setting the last one address space state.
Optionally, can delete and be recorded in the mapping table, the space address of the last one address space with it is former
The mapping relations of the corresponding mark of Harq data；If the decoding result of the Harq data is correct, setting it is described last
The state of a address space is the free time；If the decoding result mistake of the Harq data, the last one described address is set
The state in space is busy, and in the mapping table, increases the corresponding mark of the Harq data and the last one described ground
The mapping relations of the space address in location space.
As can be seen that the method that LTE terminal provided in an embodiment of the present invention preserves Harq data, it need to be previously according to LTE's
Transmission mode divides the memory space of Harq buffer, obtains the address space of 8 multiple, so that address is empty
Between reserved according to 8 process space sizes；The space address mapped Harq data of each address space need to be pre-allocated simultaneously
Mark, formed mapping table；On this basis, during LTE terminal preserves Harq data, Harq data can first be received；
According to mapping table described in the corresponding identifier lookup of the Harq data, judge the Harq data it is corresponding identify whether to exist reflect
The space address penetrated；If the Harq data are corresponding to identify the space address that there is mapping, and the Harq data are new
The data of transmission, it is determined that the Harq data are saved into the corresponding address space of mapped space address, and according to institute
The decoding of Harq data is stated as a result, the state in described address space is arranged；It is reflected if the corresponding mark of the Harq data exists
The space address penetrated, and the Harq data are to retransmit data, it is determined that by the Harq data, with mapped space address
The former data stored in corresponding address space merge, and according to the decoding of merging data as a result, setting described address is empty
Between state；It identifies there is no the space address of mapping, is searched whether in the presence of the free time if the Harq data are corresponding
Address space；If there is idle address space, it is determined that the Harq data are saved into the address space of the free time, and
According to the decoding of the Harq data as a result, the state of the address space of the setting free time；If it is empty that there is no idle addresses
Between, it is determined that the Harq data covers are entered into the last one address space, and according to the decoding of the Harq data as a result, setting
Set the state of the last one address space.
The method that LTE terminal provided in an embodiment of the present invention preserves Harq data manages plan based on dynamic Harq buffer
Slightly, there is the mapping table of the mark of each space address mapped Harq data to safeguard record, while realizing with 8 processes
Address space stores the Harq data of arbitrary process so that the address space of 8 processes can be passed through by being more than the Harq data of 8 processes
It is stored, therefore realizes the preservation of Harq data with smaller Harq buffer memory spaces, reduce LTE terminal core
The power consumption and cost of piece.
Preferably, Fig. 5 shows that LTE terminal provided in an embodiment of the present invention preserves another flow of the method for Harq data
Figure, with reference to Fig. 5, this method may include：
Step S200, when DL scheduled a Harq process, terminal receives corresponding Harq data；
Step S210, by mapping table, judge the corresponding space address identified whether in the presence of mapping of the Harq data,
If so, step S220 is executed, if it is not, executing step S310；
Specifically, mapping table can be searched to the TB of the Harq processes, the space address of mapping relations is judged whether.
Step S220, judge whether the Harq data are the data newly transmitted, if so, step S230 is executed, if it is not, holding
Row step S270；
Step S230, it determines and the Harq data is saved into the corresponding address space of mapped space address, and to
Decoding module sends to decoding；
Step S240, judge whether decoding result is correct, if so, step S250 is executed, if it is not, executing step S260；
Step S250, the state of setting address space is the free time, delete in the mapping table the marks of the Harq data with
The mapping relations of the space address；
Step S260, the state of setting address space is busy, keep in the mapping table the marks of the Harq data with
The mapping relations of the space address；
Step S270, determination merges the Harq data and the former data in the space address, and to decoding
Module sends to merging decoding；
Step S280, judge whether the decoding result for merging decoding is correct, if so, step S290 is executed, if it is not, holding
Row step S300；
Step S290, the state in setting described address space is the free time, deletes the mark of the Harq data in the mapping table
Know the mapping relations with the space address；
Step S300, the state in setting described address space is busy, keeps the mark of the Harq data in the mapping table
Know the mapping relations with the space address；
Step S310, it searches whether in the presence of idle address space, if so, step S320 is executed, if it is not, executing step
S360；
Step S320, it determines the address space that the Harq data are saved into the free time, and is sent to decoding module
Decoding；
Step S330, judge whether decoding result is correct, if so, step S340 is executed, if it is not, executing step S350；
Step S340, the state that the address space of the free time is arranged is the free time；
Step S350, the state that the address space of the free time is arranged is busy, and in the mapping table, described in increase
The corresponding mark of Harq data, the mapping relations with the space address of the address space of the free time；
Step S360, it determines and the Harq data covers is entered into the last one address space, delete and remember in the mapping table
Record, the mapping relations of the space address of the last one address space mark corresponding with the former Harq data stored,
And send to decoding to decoding module；
Step S370, judge whether decoding result is correct, if so, step S380 is executed, if it is not, executing step S390；
Step S380, the state of the last one address space described in setting is the free time；
Step S390, the state of the last one address space described in setting is busy, and in the mapping table, increases institute
State the mapping relations of Harq data corresponding mark and the space address of the last one address space.
Optionally, when the transmission mode of LTE is stream transmission pattern, previously according to the transmission mode of LTE, to Harq
The memory space of buffer is divided, and is obtained the mode of the address space of 8 multiple and can is：
The memory space of Harq buffer is divided equally into 8 pieces, obtains 8 pieces of main storage spaces, again to every piece of main storage space
Once divided equally so that every piece of main storage space is bisected into two block address spaces, to obtain 16 block address spaces；Wherein,
The mark of the space address of each address space is as the mark of the main storage space where address space and address space at place
Ordinal number mark in main storage space is constituted, such as Buf_addr-idx1-idx2；
Correspondingly, distributing the mode of the mark of the space address mapped Harq data of each address space can be：
For the space address of each address space, the mark of main storage space in space address and ordinal number are identified, with
Harq process identification (PID)s and transmission block identification in Harq data are mapped.
Optionally, when the transmission mode of LTE is single-stream transmission pattern, previously according to the transmission mode of LTE, to Harq
The memory space of buffer is divided, and is obtained the mode of the address space of 8 multiple and can is：
The memory space of Harq buffer is divided equally into 8 pieces, obtains 8 block address spaces, wherein the sky of each address space
Between address mark by address space ordinal number indicate, such as Buf_addr-idx；
Correspondingly, distributing the mode of the mark of the space address mapped Harq data of each address space can be：
For the space address of each address space, by the mark of space address and the Harq process identification (PID)s in Harq data into
Row mapping.
Optionally, after being demodulated to the Harq data received, obtained Soft Inform ation can be with 6 physics bit (bit)
It indicates；Usual Harq buffer memory spaces are all made of 6 physics bit and indicate a Soft Inform ation bit, and the embodiment of the present invention
It can be innovated according to the optimization of actual performance simulation and Stored Procedure, in the case of performance faint loss, using less than 6 objects
Reason information bit indicates that a Soft Inform ation bit is stored, so that Harq buffer memory spaces are further saved；
Optionally, the embodiment of the present invention can indicate that a Soft Inform ation bit is stored with b physical messages bit, and b is less than 6；
Specifically, Fig. 6 shows that LTE terminal provided in an embodiment of the present invention preserves another flow chart of the method for Harq data, the party
Method be applicable to during Harq data are saved into Harq buffer (such as there is the space address of mapping in Harq data,
And Harq data are the data newly transmitted or retransmit data, determine the address space that Harq data are saved into Harq buffer
Afterwards；For another example there is no the space address of mapping in Harq data, and there is idle address space or there is no idle addresses
Space determines after Harq data to be saved into the address space of Harq buffer), with reference to Fig. 6, this method may include：
If step S400, Harq data are the data newly transmitted, the Harq data are decoded, and remove institute
State low a bit of Harq data so that the Soft Inform ation of Harq data is indicated with b physics bit, described with b physics bit to incite somebody to action
The Harq data of expression are saved into Harq buffer, wherein a and b's and be 6；
If step S410, Harq data are to retransmit data, the mark mapped space of the Harq data is taken out
The data of taking-up are moved to left a bit, low a bit zero padding so that taking-up by the data stored in the corresponding address space in address
Data revert to 6 physics bit by b physics bit；
Step S420, the data that will revert to the taking-up of 6 physics bit, merge with the Harq data；
Step S430, the data after merging are decoded, and remove low a bit of the data after merging so that merged
The Soft Inform ation of data afterwards is indicated with b physics bit, to be saved into the data after the merging indicated with b physics bit
Harq buffer。
By taking b is 4bit as an example, after the Harq data that demodulation reconciliation rate-matched is received, the data of 6bit can be obtained；So
Judge whether the data are the data newly transmitted afterwards, if so, being decoded to the Harq data and removing the Harq numbers
According to low 2 bit so that the Soft Inform ation of Harq data is indicated with 4 physics bit, is then store in Harq buffer accordingly
In the space of location；If the data are not the data newly transmitted, to retransmit data, then with needing the mark mapped for taking out the data
The data of taking-up are moved to left 2 bit, low 2 bit zero paddings so that the data of taking-up are by 4 physics by the data stored in the space of location
Bit reverts to 6 physics bit, then will revert to the data of the taking-up of 6 physics bit, is merged with Harq data, to merging
Data afterwards are decoded, and remove low 2 bit of the data after merging so that the Soft Inform ation of the data after merging is with 4 physics
Bit is indicated, and is saved into Harq buffer.
Obviously, b may be the numerical value that 5bit or 3bit etc. is less than 6bit, and Fig. 7 and Fig. 8 are shown using existing 6 object
It manages bit and stores Harq data, and the memory space comparison signal using scheme provided in an embodiment of the present invention storage Harq data
Figure, can refer to.
The method that LTE terminal provided in an embodiment of the present invention preserves Harq data, it is empty with smaller Harq buffer storages
Between realize the preservations of Harq data, reduce the power consumption and cost of LTE terminal chip.
The device for preserving Harq data to LTE terminal provided in an embodiment of the present invention below is introduced, described below
The device that LTE terminal preserves Harq data can correspond reference with the method for above-described LTE terminal preservation Harq data.
Fig. 9 is the structure diagram for the device that LTE terminal provided in an embodiment of the present invention preserves Harq data, which can answer
For LTE terminal, with reference to Fig. 9, which may include：
The pre- division module 100 in space, for the transmission mode previously according to LTE, to the memory space of Harq buffer into
Row divides, and obtains the address space of 8 multiple；
Mapping forward allocator module 200, the mark of the space address mapped Harq data for distributing each address space,
Form mapping table；
Data reception module 300, for receiving Harq data；
Judgment module 400 is mapped, for according to mapping table described in the corresponding identifier lookup of the Harq data, described in judgement
The corresponding space address identified whether in the presence of mapping of Harq data；
First preserves determining module 500, if there is the space address of mapping for the corresponding mark of the Harq data,
And the Harq data are the data newly transmitted, it is determined that it is corresponding that the Harq data are saved into mapped space address
Address space, and according to the decoding of the Harq data as a result, the state in setting described address space；
Second preserves determining module 600, if there is the space address of mapping for the corresponding mark of the Harq data,
And the Harq data are to retransmit data, it is determined that by the Harq data, address corresponding with mapped space address is empty
Between the former data of middle storage merge, and according to the decoding of merging data as a result, the state in setting described address space；
Free space searching module 700, if there is no map spatially for the corresponding mark of the Harq data
Location is then searched whether in the presence of idle address space；
Third preserves determining module 800, if for there is idle address space, the Harq data are saved by determination
The address space of the free time, and according to the decoding of the Harq data as a result, the state of the address space of the setting free time；
4th preserves determining module 900, if for there is no the address spaces in space, it is determined that cover the Harq data
It covers into the last one address space, and according to the decoding of the Harq data as a result, the last one address space described in setting
State.
Optionally, first preserve determining module 500 according to the decoding of the Harq data as a result, setting described address is empty
Between state level, be particularly used in, if the decoding result of the Harq data is correct, described address space be set
State is the free time, to indicate that described address space can be occupied by new data, and the Harq data is deleted in the mapping table
Mark and the mapping relations of the space address；If the decoding result mistake of the Harq data, is arranged described address
The state in space is busy, to indicate that described address space can not be occupied by new data, and keeps the Harq in the mapping table
The mapping relations of the mark and the space address of data；
Second preserves determining module 600 in decoding as a result, the state in described address space is arranged according to merging data
Level is particularly used in, if the decoding result of the merging data is correct, the state that described address space is arranged is sky
Spare time deletes the corresponding mark of the Harq data to indicate that described address space can be occupied by new data, and in the mapping table
Know the mapping relations with the space address；If the decoding result mistake of the merging data, is arranged described address space
State be it is busy, to indicate that described address space can not be occupied by new data, and keep the Harq data in the mapping table
Mark and the mapping relations of the space address；
Third preserves determining module 800 in decoding as a result, the address of the setting free time is empty according to the Harq data
Between state level, be particularly used in, if the decoding result of the Harq data is correct, the address of the free time be set
The state in space is the free time, to indicate that described address space can be occupied by new data；If the decoding result of the Harq data
Mistake, then the state that the address space of the free time is arranged is busy, and in the mapping table, increases the Harq data pair
The mapping relations of the mark and the space address of the address space of the free time answered；
4th preserve determining module 900 according to the decoding of the Harq data as a result, the last one described address of setting
The level of the state in space, is particularly used in, and deletes and is recorded in the mapping table, the space of the last one address space
The mapping relations of address mark corresponding with the former Harq data stored；If the decoding result of the Harq data is correct,
The state that the last one address space is then arranged is the free time；If the decoding result mistake of the Harq data, is arranged
The state of the last one address space is busy, and in the mapping table, increases the corresponding mark of the Harq data
With the mapping relations of the space address of the last one address space.
Optionally, the pre- division module in space 100 is particularly used in, if the transmission mode of LTE is stream transmission pattern,
The memory space of Harq buffer is divided equally into 8 pieces, obtains 8 pieces of main storage spaces, every piece of main storage space is carried out again primary
Divide equally so that every piece of main storage space is bisected into two block address spaces, to obtain 16 block address spaces；Wherein, each address is empty
Between space address primary storage of the mark as the mark of the main storage space where address space and address space at place it is empty
Between in ordinal number mark constitute；
Correspondingly, mapping forward allocator module 200 is particularly used in, it, will spatially for the space address of each address space
In location the mark of main storage space and the ordinal number mark, in Harq data Harq process identification (PID)s and transmission block identification progress
Mapping.
On the other hand, the pre- division module in space 100 is particularly used in, if the transmission mode of LTE is single-stream transmission pattern,
The memory space of Harq buffer is then divided equally into 8 pieces, obtains 8 block address spaces, wherein the space address of each address space
Mark by address space ordinal number indicate；
Correspondingly, mapping forward allocator module 200 is particularly used in, it, will spatially for the space address of each address space
The mark of location is mapped with the Harq process identification (PID)s in Harq data.
Optionally, Figure 10 is another structural frames for the device that LTE terminal provided in an embodiment of the present invention preserves Harq data
Figure, in conjunction with shown in Fig. 9 and Figure 10, which can also include：
First preserves processing module 1000, if being the data newly transmitted for the Harq data, to the Harq
Data are decoded, and remove low a bit of the Harq data so that and the Soft Inform ation of Harq data indicates with b physics bit,
So that the Harq data indicated with b physics bit are saved into Harq buffer, wherein a and b's and be 6；
Second preserves processing module 1100, if being to retransmit data for the Harq data, takes out the Harq numbers
According to the corresponding address space of mark mapped space address in the data that store, the data of taking-up are moved to left into a bit, low a
Position bit zero paddings so that the data of taking-up revert to 6 physics bit by b physics bit；The number of the taking-up of 6 physics bit will be reverted to
According to being merged with the Harq data；Data after merging are decoded, and remove low a of the data after merging
Bit so that the Soft Inform ation of the data after merging indicates with b physics bit, so as to will be after the merging that indicated with b physics bit
Data are saved into Harq buffer.
LTE terminal provided in an embodiment of the present invention preserves the device of Harq data, can be deposited with smaller Harq buffer
Storage space realizes the preservation of Harq data, reduces the power consumption and cost of LTE terminal chip.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is said referring to method part
It is bright.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, depends on the specific application and design constraint of technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. a kind of method that LTE terminal preserves Harq data, which is characterized in that previously according to the transmission mode of LTE, to Harq
The memory space of buffer is divided, and the address space of 8 multiple is obtained, and the space address for distributing each address space is reflected
The mark for the Harq data penetrated forms mapping table；The method includes：
Receive Harq data；
According to mapping table described in the corresponding identifier lookup of the Harq data, judges that the Harq data are corresponding and identify whether to deposit
In the space address of mapping；
If the Harq data are corresponding to identify the space address that there is mapping, and the Harq data are the number newly transmitted
According to, it is determined that the Harq data are saved into the corresponding address space of mapped space address, and according to the Harq numbers
According to decoding as a result, setting described address space state；
If the Harq data are corresponding to identify the space address that there is mapping, and the Harq data are to retransmit data, then
Determine that by the Harq data, the data stored in address space corresponding with mapped space address merge, and root
According to the decoding of merging data as a result, the state in described address space is arranged；
If corresponding identify of the Harq data is searched whether there is no the space address of mapping in the presence of idle address sky
Between；
If there is idle address space, the address space that the Harq data are saved into the free time is determined, and according to institute
The decoding of Harq data is stated as a result, the state of the address space of the free time is arranged；
If there is no idle address spaces, it is determined that the Harq data covers are entered into the last one address space, and according to
The decoding of the Harq data is as a result, be arranged the state of the last one address space.
2. the method that LTE terminal according to claim 1 preserves Harq data, which is characterized in that described in the basis
The decoding of Harq data is as a result, the state in setting described address space includes：
If the decoding result of the Harq data is correct, the state that described address space is arranged is the free time, described in indicating
Address space can be occupied by new data, and the mark of the Harq data and the space address are deleted in the mapping table
Mapping relations；If the decoding result mistake of the Harq data, the state that described address space is arranged is busy, to indicate
Described address space can not be occupied by new data, and keep the mark of the Harq data and the space address in the mapping table
Mapping relations；
The decoding according to merging data is as a result, the state in setting described address space includes：
If the decoding result of the merging data is correct, the state that described address space is arranged is the free time, described in indicating
Address space can be occupied by new data, and in the mapping table, delete the corresponding mark of the Harq data and the space
The mapping relations of address；If the decoding result mistake of the merging data, be arranged described address space state be it is busy,
To indicate that described address space can not be occupied by new data, and the mark of the Harq data and the sky are kept in the mapping table
Between address mapping relations；
The decoding according to the Harq data is as a result, the state of the address space of the setting free time includes：
If the decoding result of the Harq data is correct, the state that the address space of the free time is arranged is the free time, with table
Show that described address space can be occupied by new data；If the decoding result mistake of the Harq data, the free time is set
The state of address space is busy, and in the mapping table, increases the corresponding mark of the Harq data and the free time
The mapping relations of the space address of address space；
The decoding according to the Harq data is as a result, the state of setting the last one address space includes：
It deletes and is recorded in the mapping table, the space address of the last one address space and the former Harq data that are stored
The mapping relations of corresponding mark；
If the decoding result of the Harq data is correct, the state that the last one address space is arranged is the free time；Such as
The decoding result mistake of Harq data described in fruit, the then state that the last one address space is arranged are busy, and described
In mapping table, increases the corresponding mark of the Harq data and the mapping of the space address of the last one address space is closed
System.
3. the method that LTE terminal according to claim 1 or 2 preserves Harq data, which is characterized in that it is described previously according to
The transmission mode of LTE divides the memory space of Harq buffer, and the address space for obtaining 8 multiple includes：
If the transmission mode of LTE is stream transmission pattern, the memory space of Harq buffer is divided equally into 8 pieces, obtains 8
Block main storage space is once divided every piece of main storage space equally so that every piece of main storage space is bisected into two pieces of ground again
Location space, to obtain 16 block address spaces；
Wherein, the mark of the space address of each address space is empty as the mark of the main storage space where address space and address
Between in the main storage space at place ordinal number mark constitute；
The mark of the space address mapped Harq data of each address space of the distribution includes：
For the space address of each address space, the mark of main storage space in space address and the ordinal number are identified, with
Harq process identification (PID)s and transmission block identification in Harq data are mapped.
4. the method that LTE terminal according to claim 1 or 2 preserves Harq data, which is characterized in that it is described previously according to
The transmission mode of LTE divides the memory space of Harq buffer, and the address space for obtaining 8 multiple includes：
If the transmission mode of LTE is single-stream transmission pattern, the memory space of Harq buffer is divided equally into 8 pieces, obtains 8
Block address space, wherein the mark of the space address of each address space is indicated by the ordinal number of address space；
The mark of the space address mapped Harq data of each address space of the distribution includes：
For the space address of each address space, the mark of space address is reflected with the Harq process identification (PID)s in Harq data
It penetrates.
5. the method that LTE terminal according to claim 1 or 2 preserves Harq data, which is characterized in that what is received
After Harq data are demodulated, obtained Soft Inform ation is indicated with 6 physics bit；The method further includes：
If the Harq data are the data newly transmitted, the Harq data are decoded, and remove the Harq numbers
According to low a bit so that the Soft Inform ation of Harq data indicates with b physics bit, to be indicated described with b physics bit
Harq data are saved into Harq buffer, wherein a and b's and be 6；
If the Harq data are to retransmit data, the mark mapped space address for taking out the Harq data is corresponding
The data of taking-up are moved to left a bit, low a bit zero padding so that the data of taking-up are by b objects by the data stored in address space
Reason bit reverts to 6 physics bit；
The data that the taking-up of 6 physics bit will be reverted to are merged with the Harq data；
Data after merging are decoded, and remove low a bit of the data after merging so that data after merging it is soft
Information is indicated with b physics bit, so that the data after the merging indicated with b physics bit are saved into Harq buffer.
6. a kind of LTE terminal preserves the device of Harq data, which is characterized in that including：
The pre- division module in space divides the memory space of Harq buffer for the transmission mode previously according to LTE,
Obtain the address space of 8 multiple；
Forward allocator module, the mark of the space address mapped Harq data for distributing each address space are mapped, formation is reflected
Firing table；
Data reception module, for receiving Harq data；
Judgment module is mapped, for according to mapping table described in the corresponding identifier lookup of the Harq data, judging the Harq numbers
According to the corresponding space address identified whether in the presence of mapping；
First preserves determining module, if there is the space address of mapping for the corresponding mark of the Harq data, and it is described
Harq data are the data newly transmitted, it is determined that it is empty that the Harq data are saved into the corresponding address of mapped space address
Between, and according to the decoding of the Harq data as a result, the state in setting described address space；
Second preserves determining module, if there is the space address of mapping for the corresponding mark of the Harq data, and it is described
Harq data are to retransmit data, it is determined that by the Harq data, are deposited in address space corresponding with mapped space address
The data of storage merge, and according to the decoding of merging data as a result, the state in setting described address space；
Free space searching module, if looked into there is no the space address of mapping for the corresponding mark of the Harq data
It looks for the presence or absence of idle address space；
Third preserves determining module, if for there is idle address space, determining the Harq data being saved into the sky
Not busy address space, and according to the decoding of the Harq data as a result, the state of the address space of the setting free time；
4th preserves determining module, if for there is no idle address spaces, it is determined that enter most the Harq data covers
The latter address space, and according to the decoding of the Harq data as a result, the state of setting the last one address space.
7. LTE terminal according to claim 6 preserves the device of Harq data, which is characterized in that described first preserves really
Cover half block is decoding the level as a result, the state in setting described address space according to the Harq data, is specifically used for, if
The decoding result of the Harq data is correct, then the state that described address space is arranged is the free time, to indicate described address space
The mapping of the mark and the space address that can be occupied by new data, and delete the Harq data in the mapping table is closed
System；If the decoding result mistake of the Harq data, the state that described address space is arranged is busy, to indicate described
Location space can not be occupied by new data, and keep the mapping of the mark and the space address of the Harq data in the mapping table
Relationship；
Described second preserves determining module is decoding the layer as a result, the state in setting described address space according to merging data
Face is specifically used for, if the decoding result of the merging data is correct, the state that described address space is arranged is the free time, with
Indicate that described address space can be occupied by new data, and in the mapping table, delete the corresponding mark of the Harq data with
The mapping relations of the space address；If the decoding result mistake of the merging data, is arranged the shape in described address space
State is busy, to indicate that described address space can not be occupied by new data, and keeps the mark of the Harq data in the mapping table
Know the mapping relations with the space address；
The third preserves determining module in decoding as a result, the address space of the free time is arranged according to the Harq data
The level of state, is specifically used for, if the decoding result of the Harq data is correct, the address space of the free time is arranged
State is the free time, to indicate that described address space can be occupied by new data；If the decoding result mistake of the Harq data,
The state that the address space of the free time is arranged is busy, and in the mapping table, increases the corresponding mark of the Harq data
Know the mapping relations with the space address of the address space of the free time；
Described 4th preserve determining module according to the decoding of the Harq data as a result, the last one described address space of setting
State level, be specifically used for, delete and recorded in the mapping table, the space address of the last one address space with
The mapping relations of the corresponding mark of former Harq data stored；If the decoding result of the Harq data is correct, it is arranged
The state of the last one address space is the free time；If the decoding result mistake of the Harq data, described in setting most
The state of the latter address space is busy, and in the mapping table, increase the corresponding mark of the Harq data with it is described
The mapping relations of the space address of the last one address space.
8. the LTE terminal described according to claim 6 or 7 preserves the device of Harq data, which is characterized in that draw in advance in the space
Sub-module is specifically used for, if the transmission mode of LTE is stream transmission pattern, the memory space of Harq buffer is divided equally
At 8 pieces, 8 pieces of main storage spaces are obtained, every piece of main storage space are once divided equally again so that every piece of main storage space is put down
It is divided into two block address spaces, to obtain 16 block address spaces；Wherein, the mark of the space address of each address space is by address space
The mark and address space of the main storage space at place ordinal number mark in the main storage space at place are constituted；
The mapping forward allocator module is specifically used for, for the space address of each address space, primary storage in space address is empty
Between mark and the ordinal number mark, in Harq data Harq process identification (PID)s and transmit block identification mapped.
9. the LTE terminal described according to claim 6 or 7 preserves the device of Harq data, which is characterized in that draw in advance in the space
Sub-module is specifically used for, if the transmission mode of LTE is single-stream transmission pattern, the memory space of Harq buffer is divided equally
At 8 pieces, 8 block address spaces are obtained, wherein the mark of the space address of each address space is indicated by the ordinal number of address space；
The mapping forward allocator module is specifically used for, for the space address of each address space, by the mark of space address with
Harq process identification (PID)s in Harq data are mapped.
10. LTE terminal according to claim 6 preserves the device of Harq data, which is characterized in that described device is also wrapped
It includes：
First preserves processing module, if being the data newly transmitted for the Harq data, is carried out to the Harq data
Decoding, and removes low a bit of the Harq data so that the Soft Inform ation of Harq data indicates with b physics bit, so as to by institute
It states and is saved into Harq buffer with the b physics bit Harq data indicated, wherein a and b's and be 6；
Second preserves processing module, if being to retransmit data for the Harq data, takes out the mark of the Harq data
The data of taking-up are moved to left a bit by the data stored in the corresponding address space of mapped space address, and low a bit is mended
Zero so that the data of taking-up revert to 6 physics bit by b physics bit；The data that the taking-up of 6 physics bit will be reverted to, and it is described
Harq data merge；Data after merging are decoded, and remove low a bit of the data after merging so that are merged
The Soft Inform ation of data afterwards is indicated with b physics bit, to be saved into the data after the merging indicated with b physics bit
Harq buffer。
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| CN102076023A (en) * | 2010-10-08 | 2011-05-25 | 大唐移动通信设备有限公司 | Buffer memory space distribution method and equipment |
| CN102469022A (en) * | 2010-11-19 | 2012-05-23 | 大唐移动通信设备有限公司 | Allocation method and equipment of cache space |
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| JP5368486B2 (en) * | 2008-03-13 | 2013-12-18 | エルジー エレクトロニクス インコーポレイティド | HARQ operation method considering measurement interval |
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| KR101375936B1 (en) * | 2008-02-01 | 2014-03-18 | 엘지전자 주식회사 | Method of a downlink harq operation at an expiry of time alignment timer |
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| JP5368486B2 (en) * | 2008-03-13 | 2013-12-18 | エルジー エレクトロニクス インコーポレイティド | HARQ operation method considering measurement interval |
| CN102076023A (en) * | 2010-10-08 | 2011-05-25 | 大唐移动通信设备有限公司 | Buffer memory space distribution method and equipment |
| CN102469022A (en) * | 2010-11-19 | 2012-05-23 | 大唐移动通信设备有限公司 | Allocation method and equipment of cache space |
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