CN106233653B - A kind of wireless link control transmission method and apparatus - Google Patents

A kind of wireless link control transmission method and apparatus Download PDF

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Publication number
CN106233653B
CN106233653B CN201480078080.0A CN201480078080A CN106233653B CN 106233653 B CN106233653 B CN 106233653B CN 201480078080 A CN201480078080 A CN 201480078080A CN 106233653 B CN106233653 B CN 106233653B
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rlc
data segment
coefficient vector
initial data
sent
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CN106233653A (en
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鲁振伟
李龠
郭小龙
朱松
张力学
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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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

Abstract

The invention discloses a kind of wireless link control transmission method and apparatus, are related to the communications field, solve when receiving side RLC entity needs sending side RLC entity to retransmit RLC PDU segmentation, the problem larger to the state report expense of sending side RLC Entity feedback.The specific scheme is that transmission unit is used to send the first RLC PDU to receiving side RLC entity；Receiving unit is used to receive the state report of the carrying SN of receiving side RLC entity transmission；Data segment set generation unit generates the second data segment set of initial data section for SN based on the received；RLC PDU acquiring unit is used to obtain the 2nd RLC PDU according to the second data segment set of generation；The 2nd RLC PDU that transmission unit is also used to will acquire is sent to receiving side RLC entity, so that receiving side RLC entity obtains initial data section according to the first RLC PDU and the 2nd RLC PDU.The present invention is used for wireless link control transmission.

Description

A kind of wireless link control transmission method and apparatus
Technical field
The present invention relates to the communications field more particularly to a kind of wireless link control transmission method and apparatus.
Background technique
It include nothing in the protocol stack of wireless interface in long term evolution (Long Term Evolution, LTE) system Wired link controls (Radio Link Control, RLC) layer protocol, and the major function of the rlc layer agreement is upper to what is received Layer data packet is split and recombinates, so that the data packet after dividing and recombinating is adapted to the actual transmissions of wireless interface, and it is right For the radio bearer (Radio Bearer, RB) for needing error free transmission, rlc layer agreement can also be restored by retransmission mechanism The data packet of loss, wherein each RB can correspond to several RLC entities.
When receiving side RLC entity needs sending side RLC entity to retransmit rlc protocol data cell (Protocol Data Unit, PDU) segmentation when, in addition to needing to need the RLC PDU that retransmits to be segmented corresponding sequence number comprising each in state report Except (Sequence Number, SN), it is also necessary to comprising each data field for needing the RLC PDU retransmitted segmentation in former RLC Initial position and end position in the data field of PDU, and need some fields also to indicate the RLC PDU for currently needing to retransmit Whether segmentation also includes below a pair of data field for needing the RLC PDU retransmitted segmentation in the data field of former RLC PDU Initial position and end position.
When receiving side RLC entity needs sending side RLC entity to retransmit RLC PDU segmentation, receiving side RLC entity is to transmission It needs just enable sending side RLC entity correctly to need comprising a large amount of information in the state report that side RLC entity is sent The RLC PDU to be retransmitted segmentation is retransmitted, and will cause the state report expense of receiving side RLC Entity feedback larger in this way.
Summary of the invention
The present invention provides a kind of wireless link control transmission method and apparatus, solves when receiving side RLC entity needs to send out When side RLC entity being sent to retransmit RLC PDU segmentation, the problem larger to the state report expense of sending side RLC Entity feedback.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
The first aspect of the present invention provides a kind of sending side wireless spread-spectrum technology RLC entity, comprising:
Transmission unit, for sending the first rlc protocol data cell PDU, the first RLC to receiving side RLC entity PDU includes the first data segment set generated according to initial data section, and the first data segment set includes multiple data segments, institute Stating the first RLC PDU includes the initial data section sequence number SN；
Receiving unit, for receiving the state report for the carrying SN that the receiving side RLC entity is sent, the state Report is sent after the receiving side RLC entity determination cannot obtain the initial data section；
Data segment set generation unit, the SN for being obtained according to the receiving unit generate the initial data section The second data segment set；
RLC PDU acquiring unit, the second data segment collection for being generated according to the data segment set generation unit It closes and obtains the 2nd RLC PDU；
The transmission unit is also used to the 2nd RLC PDU that the RLC PDU acquiring unit obtains being sent to institute Receiving side RLC entity is stated, so that the receiving side RLC entity is obtained according to the first RLC PDU and the 2nd RLC PDU The initial data section.
In conjunction with the first aspect of the present invention, in the first possible implementation, the receiving unit is received described State report also carries the number for retransmitting data segment；
The sending side RLC entity further include:
Determination unit, for generating the of the initial data section according to the SN in the data segment set generation unit Before two data segment set, the second of the generation is determined according to the received number for retransmitting data segment of the receiving unit Data segment number in data segment set, wherein the data segment number in the second data segment set is greater than or equal to described Retransmit the number of data segment.
In conjunction with the first possible implementation of the first aspect of the present invention, in the second possible implementation,
The data segment set generation unit is also used to send the first RLC to receiving side RLC entity in the transmission unit Before PDU, the first data segment set of the initial data section is generated；
The RLC PDU acquiring unit, first number for being also used to be generated according to the data segment set generation unit The first RLC PDU is obtained according to section set.
In conjunction with second of possible implementation of first aspect present invention, in the third possible implementation, institute State sending side RLC entity further include:
Vector table acquiring unit, for generating described the of the initial data section in the data segment set generation unit Before one data segment set, coefficient vector table is obtained；In the coefficient vector table include M coefficient vector, the M coefficient to The corresponding call number of each coefficient vector in amount, the M is positive integer.
Storage unit, the coefficient vector table obtained for storing the vector table acquiring unit；
The data segment set generation unit is specifically used for:
Obtain the sub- bit string set to be sent of the initial data section, the sub- bit string set to be sent of the initial data section In include S section sub- bit strings to be sent, the length of each of described S sections of sub- bit string to be sent sub- bit string to be sent is L, described The S and L is positive integer；
The sub- bit string set to be sent of the initial data section is stored into memory；
N number of coefficient vector is chosen from the coefficient vector table that the storage unit stores；The N be more than or equal to The S, and it is less than or equal to the positive integer of the M；
According to the sub- bit string set to be sent of the initial data section of the storage and the coefficient of the selection to Amount generates the first data segment set；It include N number of data segment in the first data segment set.
In conjunction with the third possible implementation of the first aspect of the present invention, in the fourth possible implementation, The sending side RLC entity further include:
Head information acquisition unit, for raw according to the data segment set generation unit in the RLC PDU acquiring unit At the first data segment set obtain the first RLC PDU before, obtain first information of the initial data section, it is described First information carries the call number domain of the first RLC PDU；
The RLC PDU acquiring unit, is specifically used for:
According to the size of current transmittable data, B data segment structure is chosen from the first data segment set of the generation At the data field of the first RLC PDU；The B is the positive integer less than or equal to the N；
First information of the initial data section that the head information acquisition unit is obtained and the first RLC First RLC PDU described in the data field combination producing of PDU.
In conjunction with the 4th kind of possible implementation of the first aspect of the present invention, in a fifth possible implementation, The data segment set generation unit, comprising:
Acquisition submodule, for obtaining the bit string to be sent of the initial data section；The length of the bit string to be sent is S*L；
Submodule is divided, the bit string to be sent for obtaining the acquisition submodule is divided to obtain comprising institute State the sub- bit string set to be sent of S sections of sub- bit strings to be sent.
In conjunction with the 5th kind of possible implementation of the first aspect of the present invention, in a sixth possible implementation, The acquisition submodule, is specifically used for:
According to the caching sequence of RLC SDU in RLC Service Data Unit SDU pre-stored in memory set, from institute The bit string that intercepted length is S*L in RLC SDU set is stated, the bit string for being S*L using the length is as the initial data The bit string to be sent of section.
In the 5th kind of possible implementation in conjunction with the first aspect of the present invention, in the 7th kind of possible implementation In, the acquisition submodule is specifically used for:
According to the caching sequence of RLC SDU in RLC SDU pre-stored in memory set, from the RLC SDU collection The bit string that intercepted length is X in conjunction；The length is that X bit strings are the initial data section；
Internal layer head information is obtained according to the bit string that the length is X, wherein comprising except last in the internal layer head information One RLC SDU perhaps RLC SDU segmentation outside each RLC SDU and/or RLC SDU segmentation length information or described Include the boundary demarcation information between all RLC SDU and/or RLC SDU segmentation in internal layer head information；
The length is formed to the bit string to be sent of the initial data section for X bit strings and the internal layer head information.
In conjunction with the 5th kind of possible implementation of the first aspect of the present invention, in the 8th kind of possible implementation, The data segment set generation unit further include:
Submodule is added, for before the bit string to be sent that the acquisition submodule obtains the initial data section, Every two RLC SDU boundary addition delimiter in memory in pre-stored RLC SDU set obtains new RLC SDU Set；
The acquisition submodule, specifically for being added in the new RLC SDU set that submodule obtains according to described The caching sequence of RLC SDU, the bit string that intercepted length is S*L from the new RLC SDU set, the length is S*L The bit string of position is the bit string to be sent of the initial data section, the length be in S*L bit strings in addition to the delimiter Bit string be the initial data section.
In the 4th kind of possible implementation in conjunction with first aspect present invention, in the 9th kind of possible implementation,
The data segment set generation unit, specifically for suitable from the coefficient vector table that the storage unit stores Sequence chooses N number of coefficient vector；
The call number domain for the first RLC PDU that the head information acquisition unit obtains only includes the first RLC The smallest coefficient vector of call number in the coefficient vector of the corresponding selection of the B data segment in the data field of PDU.
In conjunction with the 4th kind of possible implementation of first aspect present invention, in the tenth kind of possible implementation,
The data segment set generation unit, specifically for from the coefficient vector table that the storage unit stores with Machine chooses N number of coefficient vector；
It include the first RLC in the call number domain for the first RLC PDU that the head information acquisition unit obtains The call number of each coefficient vector in the coefficient vector of the corresponding selection of the B data segment in the data field of PDU.
In conjunction with the 6th kind of possible implementation of first aspect present invention, in a kind of the tenth possible implementation,
The head information acquisition unit, specifically for constructing first information of the initial data section；
The storage unit, first letter of the initial data section for being also used to obtain the head information acquisition unit Breath is stored into the memory；
Wherein, it is removed in first information of the initial data section comprising include in the SN, the initial data section Length information and the institute of each RLC SDU and/or RLC SDU segmentation outside the last one RLC SDU or RLC SDU segmentation State the call number domain of the first RLC PDU.
In conjunction with the 7th kind of possible implementation or the 8th kind of possible implementation of first aspect present invention, the tenth In two kinds of possible implementations,
The head information acquisition unit, specifically for constructing the call number comprising the SN and the first RLC PDU First information of the initial data section in domain.
In conjunction with the 4th kind of possible implementation of first aspect present invention, in the 13rd kind of possible implementation,
The vector table acquiring unit is also used to generate the original according to the SN in the data segment set generation unit Before second data segment set of beginning data segment, the coefficient vector table is obtained from the storage unit；
The data segment set generation unit is specifically used for being deposited according to the received SN of the receiving unit from described The sub- bit string set to be sent of the initial data section is read in reservoir；According to the data segment number, obtained from the vector table The not used coefficient vector of respective numbers is chosen in the coefficient vector table for taking unit to obtain；According to the initial data section Sub- bit string set to be sent and the selection the not used coefficient vector, generate the second data segment set.
In conjunction with the 13rd kind of possible implementation of first aspect present invention, in the 14th kind of possible implementation In,
The head information acquisition unit is also used in the RLC PDU acquiring unit according to the second data segment set Before obtaining the 2nd RLC PDU, second information of the initial data section is obtained, second information includes described second The call number domain of RLC PDU；
The RLC PDU acquiring unit, specifically for the size according to current transmittable data, from second data segment The data field that A data segment constitutes the 2nd RLC PDU is chosen in set；The A is less than or equal to second data The positive integer of data segment number in Duan Jihe；Second of the initial data section that the head information acquisition unit is obtained 2nd RLC PDU described in the data field combination producing of information and obtained the 2nd RLC PDU.
In conjunction with the 14th kind of possible implementation of first aspect present invention, in the 15th kind of possible implementation In,
The data segment set generation unit, specifically for according to the data segment number in the second data segment set, The not used coefficient vector of respective numbers is sequentially chosen from the coefficient vector table；
The call number domain for the 2nd RLC PDU that the head information acquisition unit obtains only includes the 2nd RLC Lowest index number in the corresponding not used coefficient vector of the A data segment in the data field of PDU.
In conjunction with the 14th kind of possible implementation of first aspect present invention, in the 16th kind of possible implementation In,
The data segment set generation unit, specifically for according to the data segment number in the second data segment set, The not used coefficient vector of respective numbers is randomly selected from the coefficient vector table；
It wherein, include described second in the call number domain for the 2nd RLC PDU that the head information acquisition unit obtains The call number of the corresponding each not used coefficient vector of the A data segment in the data field of RLC PDU.
In the 14th kind of possible implementation in conjunction with first aspect present invention, in the 17th kind of possible implementation In,
The head information acquisition unit is specifically used for reading the initial data from the memory according to the SN First information of section, and by the SN for including in first information of the initial data section, the initial data section Include in the initial data section for including in first information except the last one RLC SDU or RLC SDU segmentation in addition to The length information of each RLC SDU and/or RLC SDU segmentation and the call number domain combination producing institute of the 2nd RLC PDU State second information of initial data section.
In conjunction with the 14th kind of possible implementation of first aspect present invention, in the 18th kind of possible implementation In,
The head information acquisition unit, specifically for constructing the call number comprising the SN and the 2nd RLC PDU Second information of the initial data section in domain.
In conjunction with first aspect present invention the third possible implementation into the 18th kind of possible implementation Any one, in the 19th kind of possible implementation, the vector table acquiring unit is specifically used for:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the receiving side RLC entity is sent；The coefficient vector table is the receiving side The RLC entity S and L based on the received, is calculated according to vandermonde matrix or Cauchy matrix；Alternatively,
According to the S and the L, according to the vandermonde matrix or the Cauchy matrix be calculated the coefficient to Scale.
The second aspect of the present invention provides a kind of receiving side wireless spread-spectrum technology RLC entity, comprising:
Receiving unit, for receiving the first rlc protocol data cell PDU of sending side RLC entity transmission, described first RLC PDU includes the first data segment set generated according to initial data section, and the first data segment set includes multiple data Section, the first RLC PDU includes the initial data section sequence number SN；
Transmission unit, for when determination cannot obtain the initial data section, RLC entity transmission in the sending side Xiang Suoshu to be taken State report with the SN；Wherein, the SN generates the second data segment set for the sending side RLC entity, according to institute It states the second data segment set and obtains the 2nd RLC PDU, the second data segment set is generated according to the initial data section；
The receiving unit is also used to receive the 2nd RLC PDU that the sending side RLC entity is sent；
Data segment acquiring unit, for according to the received first RLC PDU and the 2nd RLC of the receiving unit PDU obtains the initial data section.
In conjunction with the second aspect of the present invention, in the first possible implementation, the receiving side RLC entity is also wrapped It includes:
Number acquiring unit, for obtaining the number for retransmitting data segment；
The state report that the transmission unit is sent also carries the re-transmission data segment that the number acquiring unit obtains Number, it is described retransmit data segment number for the sending side RLC entity determine generate the second data segment set In data segment number, wherein data segment number in the second data segment set is greater than or equal to the re-transmission data segment Number.
In conjunction with the possible implementation of the first of second aspect of the present invention or second aspect, in second of possible realization In mode, the receiving side RLC entity further include:
Vector table acquiring unit, for obtaining coefficient vector table；Wherein, in the coefficient vector table comprising M coefficient to It measures, the corresponding call number of each coefficient vector in the M coefficient vector；The M is positive integer；
Determination unit, for what is obtained according to the call number domain of the first RLC PDU and the vector table acquiring unit The coefficient vector table obtains coefficient vector corresponding to each data segment in the first data segment set, forms coefficient Vector set；According to the coefficient vector set, calculate whether the rank of matrix that the coefficient vector collection is combined into is equal to S, institute Stating S is the number of segment that the sending side RLC entity divides the corresponding bit string to be sent of the initial data section, and the S is positive whole Number；When the rank of matrix that the coefficient vector collection of calculating is combined into is not equal to S, it is determined that the initial data cannot be obtained Section；Or when the rank of matrix that the coefficient vector collection of calculating is combined into is equal to S, it is determined that the initial data can be obtained Section.
In conjunction with second of possible implementation of second aspect of the present invention, in the third possible implementation, institute Vector table acquiring unit is stated to be specifically used for:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the sending side RLC entity is sent；The coefficient vector table is the sending side RLC entity is calculated according to the S and L according to vandermonde matrix or Cauchy matrix；The S and L is for described Sending side RLC entity obtains the corresponding bit string to be sent of the initial data section, and L is positive integer；Alternatively,
The S and L based on the received is calculated described according to the vandermonde matrix or the Cauchy matrix Coefficient vector table.
The third aspect of the present invention provides a kind of wireless link control transmission method, comprising:
The first rlc protocol data cell PDU, the first RLC PDU is sent to receiving side wireless spread-spectrum technology RLC entity Including the first data segment set generated according to initial data section, the first data segment set includes multiple data segments, described First RLC PDU includes the initial data section sequence number SN；
The state report for the carrying SN that the receiving side RLC entity is sent is received, the state report is described Receiving side RLC entity determination, which cannot obtain, to be sent after the initial data section；
The second data segment set of the initial data section is generated according to the SN；
The 2nd RLC PDU is obtained according to the second data segment set；
The 2nd RLC PDU is sent to the receiving side RLC entity, so that the receiving side RLC entity is according to institute It states the first RLC PDU and the 2nd RLC PDU and obtains the initial data section.
In conjunction with the third aspect of the present invention, in the first possible implementation, when the received state report also Carry retransmit data segment number when, it is described according to the SN generate the initial data section the second data segment set it Before, further includes:
The data segment number in the second data segment set is determined according to the number for retransmitting data segment, wherein institute It states the data segment number in the second data segment set and is greater than or equal to the number for retransmitting data segment.
In conjunction with the first possible implementation of third aspect present invention, in the second possible implementation, Before the first rlc protocol data cell PDU to the transmission of receiving side RLC entity, further includes:
Generate the first data segment set of the initial data section；
The first RLC PDU is obtained according to the first data segment set.
In conjunction with second of possible implementation of third aspect present invention, in the third possible implementation, Before the first data segment set for generating the initial data section, further includes:
Obtain coefficient vector table；It include M coefficient vector in the coefficient vector table, it is every in the M coefficient vector The corresponding call number of a coefficient vector, the M are positive integer；
Store the coefficient vector table obtained；
The the first data segment set for generating the initial data section, comprising:
Obtain the sub- bit string set to be sent of the initial data section, the sub- bit string set to be sent of the initial data section In include S section sub- bit strings to be sent, the length of each of described S sections of sub- bit string to be sent sub- bit string to be sent is L, described The S and L is positive integer；
The sub- bit string set to be sent of the initial data section is stored into memory；
N number of coefficient vector is chosen from the coefficient vector table；The N is and to be less than or equal to more than or equal to the S The positive integer of the M；
According to the sub- bit string set to be sent of the initial data section and the coefficient vector, first data segment is generated Set；It include N number of data segment in the first data segment set.
In conjunction with the third possible implementation of the third aspect, in the fourth possible implementation, at described Before the first data segment set acquisition the first RLC PDU, further includes:
First information of the initial data section is obtained, first information carries the rope of the first RLC PDU Quotation marks domain；
It is described that the first RLC PDU is obtained according to the first data segment set, comprising:
According to the size of current transmittable data, chosen from the first data segment set described in B data segment composition The data field of first RLC PDU；The B is the positive integer less than or equal to the N；
By described in the data field combination producing of first information of the initial data section and the first RLC PDU One RLC PDU.
In conjunction with the 4th kind of possible implementation of third aspect present invention, in a fifth possible implementation, institute State the sub- bit string set to be sent for obtaining the initial data section, comprising:
Obtain the bit string to be sent of the initial data section；The length of the bit string to be sent is S*L；
The bit string to be sent is divided to obtain the sub- bit string to be sent comprising described S sections sub- bit string to be sent Set.
In conjunction with the 5th kind of possible implementation of third aspect present invention, in a sixth possible implementation, institute State the bit string to be sent for obtaining the initial data section, comprising:
According to the caching sequence of RLC SDU in RLC Service Data Unit SDU pre-stored in memory set, from institute The bit string that intercepted length is S*L in RLC SDU set is stated, the bit string for being S*L using the length is as the initial data The bit string to be sent of section.
In conjunction with the 5th kind of possible implementation of third aspect present invention, in the 7th kind of possible implementation, institute State the bit string to be sent for obtaining the initial data section, comprising:
According to the caching sequence of RLC SDU in RLC SDU pre-stored in memory set, from the RLC SDU collection The bit string that intercepted length is X in conjunction；The length is that X bit strings are the initial data section；
Internal layer head information is obtained according to the bit string that the length is X；Wherein, comprising except last in the internal layer head information One RLC SDU perhaps RLC SDU segmentation outside each RLC SDU and/or RLC SDU segmentation length information or described Include the boundary demarcation information between all RLC SDU and/or RLC SDU segmentation in internal layer head information；
The length is formed to the bit string to be sent of the initial data section for X bit strings and the internal layer head information.
In conjunction with the 5th kind of possible implementation of third aspect present invention, in the 8th kind of possible implementation, Before the bit string to be sent for obtaining the initial data section, further includes:
The every two RLC SDU boundary addition delimiter in pre-stored RLC SDU set obtains in memory New RLC SDU set；
The bit string to be sent for obtaining the initial data section, comprising:
According to the caching sequence of RLC SDU in the new RLC SDU set, cut from the new RLC SDU set Taking length is S*L bit strings, and the length is the bit string to be sent that S*L bit strings are the initial data section, the length Bit string in the bit string that degree is S*L in addition to the delimiter is the initial data section.
In conjunction with the 4th kind of possible implementation of third aspect present invention, in the 9th kind of possible implementation, institute It states and chooses N number of coefficient vector from the coefficient vector table, comprising:
N number of coefficient vector is sequentially chosen from the coefficient vector table；
The call number domain of the first RLC PDU carried in first information of the acquisition includes:
Only call number in the corresponding coefficient vector of the B data segment in the data field comprising the first RLC PDU The smallest coefficient vector.
In conjunction with the 4th kind of possible implementation of third aspect present invention, in the tenth kind of possible implementation, institute It states and chooses N number of coefficient vector from the coefficient vector table, comprising:
N number of coefficient vector is randomly selected from the coefficient vector table；
The call number domain for the first RLC PDU that first information of the acquisition carries specifically includes:
Each coefficient in the corresponding coefficient vector of the B data segment in data field comprising the first RLC PDU The call number of vector.
In conjunction with the 6th kind of possible implementation of third aspect present invention, in a kind of the tenth possible implementation, First information for obtaining the initial data section, comprising:
Construct first information of the initial data section；
First information of the initial data section is stored into the memory；
Wherein, it is removed in first information of the initial data section comprising include in the SN, the initial data section Length information and the institute of each RLC SDU and/or RLC SDU segmentation outside the last one RLC SDU or RLC SDU segmentation State the call number domain of the first RLC PDU.
In conjunction with the 7th kind of possible implementation or the 8th kind of possible implementation of third aspect present invention, the tenth In two kinds of possible implementations, first information for obtaining the initial data section, comprising:
First letter of the initial data section in call number domain of the construction comprising the SN and the first RLC PDU Breath.
In conjunction with the 4th kind of possible implementation of third aspect present invention, in the 13rd kind of possible implementation, Before the second data segment set for generating the initial data section according to the SN, further includes:
Obtain the coefficient vector table of storage；
The second data segment set that the initial data section is generated according to the SN, comprising:
According to the SN, the sub- bit string set to be sent of the initial data section is read from the memory；
According to the data segment number, the not used coefficient vector of respective numbers is chosen from the coefficient vector table；
According to the sub- bit string set to be sent of the initial data section and the not used coefficient vector, described the is generated Two data segment set.
In conjunction with the 13rd kind of possible implementation of third aspect present invention, in the 14th kind of possible implementation In, before the 2nd RLC PDU according to the second data segment set acquisition, further includes:
Second information of the initial data section is obtained, second information includes the rope of the 2nd RLC PDU Quotation marks domain；
It is described that 2nd RLC PDU is obtained according to the second data segment set, comprising:
According to the size of current transmittable data, chosen from the second data segment set described in A data segment composition The data field of 2nd RLC PDU；The A is just whole less than or equal to the data segment number in the second data segment set Number；
By described in the data field combination producing of second information of the initial data section and the 2nd RLC PDU Two RLC PDU.
In conjunction with the 14th kind of possible implementation of third aspect present invention, in the 15th kind of possible implementation In, the data segment number according in the second data segment set chooses respective numbers from the coefficient vector table Not used coefficient vector, comprising:
According to the data segment number in the second data segment set, respective counts are sequentially chosen from the coefficient vector table The not used coefficient vector of amount；
The call number domain for the 2nd RLC PDU that second information of the acquisition includes includes:
The only corresponding not used coefficient vector of the A data segment in the data field comprising the 2nd RLC PDU Middle lowest index number.
In conjunction with the 14th kind of possible implementation of third aspect present invention, in the 16th kind of possible implementation In, the data segment number according in the second data segment set chooses respective numbers from the coefficient vector table Not used coefficient vector, comprising:
According to the data segment number in the second data segment set, respective counts are randomly selected from the coefficient vector table The not used coefficient vector of amount；
The call number domain for the 2nd RLC PDU that second information of the acquisition includes includes:
The corresponding each not used coefficient of the A data segment in data field comprising the 2nd RLC PDU to The call number of amount.
In conjunction with the 14th kind of possible implementation of third aspect present invention, in the 17th kind of possible implementation In, second information for obtaining the initial data section, comprising:
According to the SN, first information of the initial data section is read from the memory；
By first information of the SN, the initial data section that include in first information of the initial data section In include the initial data section in include except the last one RLC SDU or RLC SDU segmentation in addition to each RLC SDU And/or RLC SDU segmentation length information and the 2nd RLC PDU call number domain combination producing described in initial data Second information of section.
In conjunction with the 14th kind of possible implementation of third aspect present invention, in the 18th kind of possible implementation In, second information for obtaining the initial data section, comprising:
Second letter of the initial data section in call number domain of the construction comprising the SN and the 2nd RLC PDU Breath.
In conjunction with the third possible implementation appointing to the 18th kind of possible implementation of third aspect present invention It anticipates one kind, in the 19th kind of possible implementation, the acquisition coefficient vector table, comprising:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the receiving side RLC entity is sent；The coefficient vector table is the receiving side The RLC entity S and L based on the received, is calculated according to vandermonde matrix or Cauchy matrix；Alternatively,
According to the S and the L, according to the vandermonde matrix or the Cauchy matrix be calculated the coefficient to Scale.
The fourth aspect of the present invention provides a kind of wireless link control transmission method, comprising:
Receive the first rlc protocol data cell PDU, the first RLC that wireless spread-spectrum technology RLC entity in sending side is sent PDU includes the first data segment set generated according to initial data section, and the first data segment set includes multiple data segments, institute Stating the first RLC PDU includes the initial data section sequence number SN；
When determination can not obtain the initial data section, the sending side Xiang Suoshu RLC entity, which is sent, carries the SN's State report；Wherein, the SN generates the second data segment set for the sending side RLC entity, according to second data Duan Jihe obtains the 2nd RLC PDU, and the second data segment set is generated according to the initial data section；
Receive the 2nd RLC PDU that the sending side RLC entity is sent；
The initial data section is obtained according to the first RLC PDU and the 2nd RLC PDU.
In conjunction with the fourth aspect of the present invention, in the first possible implementation, described real to the sending side RLC Body is sent before the state report for carrying the SN, further includes:
Obtain the number for retransmitting data segment；
The state report of the transmission also carries the number for retransmitting data segment, and the number for retransmitting data segment is used for The sending side RLC entity determines the data segment number in the second data segment set generated, wherein second data Data segment number in Duan Jihe is greater than or equal to the number for retransmitting data segment.
In conjunction with the possible implementation of the first of fourth aspect present invention or fourth aspect, in second of possible realization In mode, described when determination can not obtain the initial data section, the sending side Xiang Suoshu RLC entity is sent described in carrying Before the state report of SN, further includes:
Obtain coefficient vector table；It include M coefficient vector in the coefficient vector table, it is every in the M coefficient vector The corresponding call number of a coefficient vector, the M are positive integer；
According to the call number domain of the first RLC PDU and the coefficient vector table, the first data segment set is obtained In coefficient vector corresponding to each data segment, form coefficient vector set；
According to the coefficient vector set, calculate whether the rank of matrix that the coefficient vector collection is combined into is equal to S, it is described S is the number of segment that the sending side RLC entity divides the corresponding bit string to be sent of the initial data section, and the S is positive integer；
When the rank of matrix that the coefficient vector collection of calculating is combined into is not equal to S, it is determined that the original cannot be obtained Beginning data segment；Or when the rank of matrix that the coefficient vector collection of calculating is combined into is equal to S, it is determined that the original can be obtained Beginning data segment.
In conjunction with second of possible implementation of fourth aspect present invention, in the third possible implementation, institute It states and obtains coefficient vector table, comprising:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the sending side RLC entity is sent；The coefficient vector table is the sending side RLC entity is calculated according to the S and L according to vandermonde matrix or Cauchy matrix；The S and L is for described Sending side RLC entity obtains the corresponding bit string to be sent of the initial data section, and L is positive integer；Alternatively,
The S and L based on the received is calculated described according to the vandermonde matrix or the Cauchy matrix Coefficient vector table.
The fifth aspect of the present invention provides a kind of sending side wireless spread-spectrum technology RLC entity, comprising:
Transmitter, for sending the first rlc protocol data cell PDU, the first RLC PDU to receiving side RLC entity Including the first data segment set generated according to initial data section, the first data segment set includes multiple data segments, described First RLC PDU includes the initial data section sequence number SN；
Receiver, for receiving the state report for the carrying SN that the receiving side RLC entity is sent, the state report Announcement is sent after the receiving side RLC entity determination cannot obtain the initial data section；
Processor, the SN for being obtained according to the receiver generate the second data segment collection of the initial data section It closes, and the 2nd RLC PDU is obtained according to the second data segment set of the generation；
The transmitter, the 2nd RLC PDU for being also used to obtain the processor are sent to the receiving side RLC Entity, so that the receiving side RLC entity obtains the original number according to the first RLC PDU and the 2nd RLC PDU According to section.
In conjunction with the fifth aspect of the present invention, in the first possible implementation, the received shape of receiver State report also carries the number for retransmitting data segment；
The processor is also used to before the second data segment set for generating the initial data section according to the SN, The data in the second data segment set of the generation are determined according to the received number for retransmitting data segment of the receiver Section number, wherein the data segment number in the second data segment set is greater than or equal to the number for retransmitting data segment.
In conjunction with the first possible implementation of fifth aspect present invention, in the second possible implementation,
The processor is also used to before the transmitter sends the first RLC PDU to receiving side RLC entity, is generated The first data segment set of the initial data section, and according to the acquisition of the first data segment set of the generation First RLC PDU.
In conjunction with second of possible implementation of fifth aspect present invention, in the third possible implementation,
The processor is also used to before the first data segment set for generating the initial data section, obtains system Number vector table；It include M coefficient vector in the coefficient vector table, each coefficient vector in the M coefficient vector is corresponding One call number, the M are positive integer.
The sending side RLC entity, further includes:
Memory, for storing the coefficient vector table of the acquisition；
The processor is specifically used for:
Obtain the sub- bit string set to be sent of the initial data section, the sub- bit string set to be sent of the initial data section In include S section sub- bit strings to be sent, the length of each of described S sections of sub- bit string to be sent sub- bit string to be sent is L, described The S and L is positive integer；
The sub- bit string set to be sent of the initial data section is stored into memory；
N number of coefficient vector is chosen from the coefficient vector table that the memory stores；The N is more than or equal to institute S is stated, and is less than or equal to the positive integer of the M；
According to the sub- bit string set to be sent of the initial data section of the storage and the coefficient of the selection to Amount generates the first data segment set；It include N number of data segment in the first data segment set.
In conjunction with the third possible implementation of fifth aspect present invention, in the fourth possible implementation,
The processor is also used to before obtaining the first RLC PDU according to the first data segment set of generation, obtains First information of the initial data section is taken, first information carries the call number domain of the first RLC PDU；
The processor, is specifically used for:
According to the size of current transmittable data, B data segment structure is chosen from the first data segment set of the generation At the data field of the first RLC PDU；The B is the positive integer less than or equal to the N；
It combines the data field of first information of the initial data section of the acquisition and the first RLC PDU Generate the first RLC PDU.
In conjunction with the 4th kind of possible implementation of fifth aspect present invention, in a fifth possible implementation, institute Processor is stated, is specifically used for:
Obtain the bit string to be sent of the initial data section；The length of the bit string to be sent is S*L；
By the bit string to be sent of the acquisition divided to obtain comprising described in described S sections sub- bit string to be sent to Send sub- bit string set.
In conjunction with the 5th kind of possible implementation of fifth aspect present invention, in a sixth possible implementation, institute Processor is stated, is specifically used for:
According to the caching sequence of RLC SDU in RLC Service Data Unit SDU pre-stored in memory set, from institute The bit string that intercepted length is S*L in RLC SDU set is stated, the bit string for being S*L using the length is as the initial data The bit string to be sent of section.
It is described in seven kinds of possible implementations in conjunction with the 5th kind of possible implementation of fifth aspect present invention Processor is specifically used for:
According to the caching sequence of RLC SDU in RLC SDU pre-stored in memory set, from the RLC SDU collection The bit string that intercepted length is X in conjunction；The length is that X bit strings are the initial data section；
Internal layer head information is obtained according to the bit string that the length is X, wherein comprising except last in the internal layer head information One RLC SDU perhaps RLC SDU segmentation outside each RLC SDU and/or RLC SDU segmentation length information or described Include the boundary demarcation information between all RLC SDU and/or RLC SDU segmentation in internal layer head information；
The length is formed to the bit string to be sent of the initial data section for X bit strings and the internal layer head information.
In conjunction with the 5th kind of possible implementation of fifth aspect present invention, in the 8th kind of possible implementation,
The processor is also used to before the bit string to be sent for obtaining the initial data section, in memory in advance Every two RLC SDU boundary addition delimiter in the RLC SDU set of storage obtains new RLC SDU set；
The processor, sequentially specifically for the caching according to RLC SDU in the obtained new RLC SDU set, The bit string that intercepted length is S*L from the new RLC SDU set, the length is that S*L bit strings are described original The bit string to be sent of data segment, the bit string in the bit string that the length is S*L in addition to the delimiter is the original number According to section.
In the 4th kind of possible implementation in conjunction with fifth aspect present invention, in the 9th kind of possible implementation,
The processor, it is N number of described specifically for sequentially being chosen from the coefficient vector table that the memory stores Coefficient vector；
The call number domain for the first RLC PDU that the processor obtains only includes the data of the first RLC PDU The smallest coefficient vector of call number in the coefficient vector of the corresponding selection of the B data segment in domain.
In conjunction with the 4th kind of possible implementation of fifth aspect present invention, in the tenth kind of possible implementation,
The processor, it is N number of described specifically for being randomly selected from the coefficient vector table that the memory stores Coefficient vector；
It include the data of the first RLC PDU in the call number domain for the first RLC PDU that the processor obtains The call number of each coefficient vector in the coefficient vector of the corresponding selection of the B data segment in domain.
In conjunction with the 6th kind of possible implementation of fifth aspect present invention, in a kind of the tenth possible implementation,
The processor, specifically for constructing first information of the initial data section；
The memory is also used to store first information of the initial data section that the processor obtains；
Wherein, it is removed in first information of the initial data section comprising include in the SN, the initial data section Length information and the institute of each RLC SDU and/or RLC SDU segmentation outside the last one RLC SDU or RLC SDU segmentation State the call number domain of the first RLC PDU.
In conjunction with the 7th kind of possible implementation or the 8th kind of possible implementation of fifth aspect present invention, the tenth In two kinds of possible implementations,
The processor, specifically for constructing described in the call number domain comprising the SN and the first RLC PDU First information of initial data section.
In conjunction with the 4th kind of possible implementation of fifth aspect present invention, in the 13rd kind of possible implementation,
The processor is also used to before the second data segment set for generating the initial data section according to the SN, The coefficient vector table is obtained from the memory；
The processor is specifically used for according to the received SN of the receiver, from the memory described in reading The sub- bit string set to be sent of initial data section；According to the data segment number, from the coefficient vector table of the acquisition Choose the not used coefficient vector of respective numbers；According to the sub- bit string set to be sent of the initial data section and the selection The not used coefficient vector, generate the second data segment set.
In conjunction with the 13rd kind of possible implementation of fifth aspect present invention, in the 14th kind of possible implementation In,
The processor is also used to before obtaining the 2nd RLC PDU according to the second data segment set, described in acquisition Second information of initial data section, second information include the call number domain of the 2nd RLC PDU；
The processor is selected from the second data segment set specifically for the size according to current transmittable data A data segment is taken to constitute the data field of the 2nd RLC PDU；The A is less than or equal in the second data segment set Data segment number positive integer；By second information of the initial data section of the acquisition and it is described obtain described in 2nd RLC PDU described in the data field combination producing of 2nd RLC PDU.
In conjunction with the 14th kind of possible implementation of fifth aspect present invention, in the 15th kind of possible implementation In,
The processor, specifically for according to the data segment number in the second data segment set, from the coefficient to The not used coefficient vector of respective numbers is sequentially chosen in scale；
The call number domain for the 2nd RLC PDU that the processor obtains only includes the data of the 2nd RLC PDU Lowest index number in the corresponding not used coefficient vector of the A data segment in domain.
In conjunction with the 14th kind of possible implementation of fifth aspect present invention, in the 16th kind of possible implementation In,
The processor, specifically for the data segment number in the second data segment set according to the selection, from The not used coefficient vector of respective numbers is randomly selected in the coefficient vector table；
Comprising the 2nd RLC PDU in the call number domain for the 2nd RLC PDU that wherein, the processor obtains The call number of the corresponding each not used coefficient vector of the A data segment in data field.
In conjunction with the 14th kind of possible implementation of fifth aspect present invention, in the 17th kind of possible implementation In,
The processor is specifically used for reading the first of the initial data section from the memory according to the SN Head information, and by the SN for including in first information of the initial data section, first of initial data section letter The each RLC in addition to the last one RLC SDU or RLC SDU segmentation for including in the initial data section for including in breath Original number described in the length information of SDU and/or RLC SDU segmentation and the call number domain combination producing of the 2nd RLC PDU According to second information of section.
In conjunction with the 14th kind of possible implementation of fifth aspect present invention, in the 18th kind of possible implementation In,
The processor, specifically for constructing described in the call number domain comprising the SN and the 2nd RLC PDU Second information of initial data section.
In conjunction with the third possible implementation appointing to the 18th kind of possible implementation of fifth aspect present invention It anticipates one kind, in the 19th kind of possible implementation, the processor is specifically used for:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the receiving side RLC entity is sent；The coefficient vector table is the receiving side The RLC entity S and L based on the received, is calculated according to vandermonde matrix or Cauchy matrix；Alternatively,
According to the S and the L, according to the vandermonde matrix or the Cauchy matrix be calculated the coefficient to Scale.
The sixth aspect of the present invention provides a kind of receiving side wireless spread-spectrum technology RLC entity, comprising:
Receiver, for receiving the first rlc protocol data cell PDU, the first RLC of sending side RLC entity transmission PDU includes the first data segment set generated according to initial data section, and the first data segment set includes multiple data segments, institute Stating the first RLC PDU includes the initial data section sequence number SN；
Transmitter, for when determination cannot obtain the initial data section, the sending side Xiang Suoshu RLC entity to send carrying The state report of the SN；Wherein, the SN generates the second data segment set for the sending side RLC entity, according to described Second data segment set obtains the 2nd RLC PDU, and the second data segment set is generated according to the initial data section；
The receiver is also used to receive the 2nd RLC PDU that the sending side RLC entity is sent；
Processor, for obtaining institute according to the receiver received first RLC PDU and the 2nd RLC PDU State initial data section.
In conjunction with the sixth aspect of the present invention, in the first possible implementation,
The processor is also used to obtain the number for retransmitting data segment；
The state report that the transmitter is sent also carries the number for the re-transmission data segment that the processor obtains, institute The number for retransmitting data segment is stated for the data segment in determining the second data segment set generated of the sending side RLC entity Number, wherein the data segment number in the second data segment set is greater than or equal to the number for retransmitting data segment.
In conjunction with the first possible implementation of the sixth aspect of the present invention or the 6th aspect, in second of possible reality In existing mode,
The processor is also used to obtain coefficient vector table；It wherein, include M coefficient vector in the coefficient vector table, The corresponding call number of each coefficient vector in the M coefficient vector；The M is positive integer；And according to the first RLC The call number domain of PDU and the coefficient vector table of the acquisition obtain each data segment in the first data segment set Corresponding coefficient vector forms coefficient vector set；According to the coefficient vector set, calculates the coefficient vector collection and be combined At rank of matrix whether be equal to S, the S is the sending side RLC entity by the corresponding position to be sent of the initial data section The number of segment that string divides, the S are positive integer；When the rank of matrix that the coefficient vector collection of calculating is combined into is not equal to S, then Determination cannot obtain the initial data section；Or when the rank of matrix that the coefficient vector collection of calculating is combined into is equal to S, Then determination can obtain the initial data section.
In conjunction with second of possible implementation of sixth aspect present invention, in the third possible implementation, institute Processor is stated to be specifically used for:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the sending side RLC entity is sent；The coefficient vector table is the sending side RLC entity is calculated according to the S and L according to vandermonde matrix or Cauchy matrix；The S and L is for described Sending side RLC entity obtains the corresponding bit string to be sent of the initial data section, and L is positive integer；Alternatively,
The S and L based on the received is calculated described according to the vandermonde matrix or the Cauchy matrix Coefficient vector table.
Wireless link control transmission method and apparatus provided in an embodiment of the present invention, sending side RLC entity is to receiving side RLC It includes receiving receiving side RLC according to the first RLC PDU of the first data segment set of initial data section generation that entity, which is sent, After the state report for the carrying initial data section SN that entity is sent, the second data of the initial data section are generated according to the SN Duan Jihe, and the 2nd RLC PDU is obtained according to the second data segment set, and be sent to receiving side RLC entity, so as to receiving side RLC entity obtains initial data section according to the first RLC PDU and the 2nd RLC PDU, in this way receiving side RLC entity determination cannot When enough getting some initial data section, by sending state report only comprising initial data section SN to sending side RLC entity It accuses, reduces the expense to sending side RLC Entity feedback state report.
Detailed description of the invention
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 technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art To obtain other drawings based on these drawings.
Fig. 1 is a kind of form schematic diagram for RLC PDU that the prior art provides；
Fig. 2 is a kind of form schematic diagram for RLC PDU segmentation that the prior art provides；
Fig. 3 is a kind of form schematic diagram for state report that the prior art provides；
Fig. 4 is a kind of composition schematic diagram for sending side RLC entity that one embodiment of the invention provides；
Fig. 5 is the composition schematic diagram for another sending side RLC entity that one embodiment of the invention provides；
Fig. 6 be another embodiment of the present invention provides a kind of receiving side RLC entity composition schematic diagram；
Fig. 7 be another embodiment of the present invention provides another receiving side RLC entity composition schematic diagram；
Fig. 8 be another embodiment of the present invention provides a kind of wireless link control transmission method flow diagram；
Fig. 9 be another embodiment of the present invention provides another wireless link control transmission method flow diagram；
Figure 10 be another embodiment of the present invention provides another wireless link control transmission method flow diagram；
Figure 11 be another embodiment of the present invention provides a kind of internal layer head form schematic diagram；
Figure 12 be another embodiment of the present invention provides the first RLC PDU of one kind form schematic diagram；
Figure 13 be another embodiment of the present invention provides the first RLC PDU of another kind form schematic diagram；
Figure 14 be another embodiment of the present invention provides another the first RLC PDU form schematic diagram；
Figure 15 be another embodiment of the present invention provides a kind of state report form schematic diagram；
Figure 16 be another embodiment of the present invention provides a kind of sending side RLC entity composition schematic diagram；
Figure 17 be another embodiment of the present invention provides a kind of receiving side RLC entity composition schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
The techniques described herein may be used in various communication systems, such as current 2G, 3G communication system and next generation communication System, such as global system for mobile communications (Global System for Mobile communications, GSM), code point are more Location (Code Division Multiple Access, CDMA) system, time division multiple acess (Time Division Multiple Access, TDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access Wireless, WCDMA), frequency division multiple access (Frequency Division Multiple Addressing, FDMA) system, just Frequency division multiple access (Orthogonal Frequency-Division Multiple Access, the OFDMA) system of friendship, single carrier FDMA (SC-FDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS) system, LTE System and other such communication systems.
Various aspects are described herein in connection with terminal and/or base station and/or base-station node.
User equipment can be wireless terminal and be also possible to catv terminal, and wireless terminal can be directed to user and provide language The equipment of sound and/or data connectivity has the handheld device of wireless connecting function or is connected to radio modem Other processing equipments.Wireless terminal can through wireless access network (for example, Radio Access Network, RAN) with one or Multiple cores net is communicated, and wireless terminal can be mobile terminal, such as mobile phone (or be " honeycomb " phone) and is had The computer of mobile terminal, for example, it may be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile dress It sets, they exchange language and/or data with wireless access network.For example, personal communication service (Personal Communication Service, PCS) phone, wireless phone, Session initiation Protocol (SIP) phone, wireless local loop (Wireless Local Loop, WLL) it stands, the equipment such as personal digital assistant (Personal Digital Assistant, PDA).Wireless terminal can also be with Referred to as system, subscriber unit (Subscriber Unit), subscriber station (Subscriber Station), movement station (Mobile Station), mobile station (Mobile), distant station (Remote Station), access point (Access Point), remote terminal (Remote Terminal), access terminal (Access Terminal), user terminal (User Terminal), user agent (User Agent), user equipment (User Equipment).
Base station (for example, access point), which can be, to be referred to the accession in net in the sky on interface by one or more sectors and wireless The equipment of terminal communication.The air frame that base station can be used for receive mutually is converted with Internet protocol (IP) grouping, as nothing Router between line terminal and the rest part of access net, wherein the rest part for accessing net may include IP network.Base station is also Attribute management of the tunable to air interface.For example, base station can be base station (the Base Transceiver in GSM or CDMA Station, BTS), radio network controller (Radio Network Controller, the RNC) base being also possible in WCDMA Stand (NodeB), can also be the evolved base station (evolutional Node B, NodeB or eNB or e-NodeB) in LTE, The application does not limit.
In addition, the terms " system " and " network " are often used interchangeably herein.The terms " and/ Or ", only a kind of incidence relation for describing affiliated partner, indicates may exist three kinds of relationships, for example, A and/or B, it can be with table Show: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, character "/" herein, typicallys represent front and back Affiliated partner is a kind of relationship of "or".
In existing LTE system, each RLC entity can configure different RLC modes according to the difference of type of service, The RLC mode for specifically including has: transparent mode (Transparent Mode, TM), Unacknowledged Mode (Unacknowledged Mode, UM) and affirmation mode (Acknowledged Mode, AM).When the RLC mode of RLC entity is configured as AM, send Side RLC entity first according to media access control (Medium Access Control, MAC) layer notice transmission opportunity and The data package size that can be sent, from the RLC Service Data Unit (Service Data Unit, SDU) cached in advance sequentially Concatenation is assembled into the data field of RLC PDU, and constructs the corresponding head information of the data field according to protocol requirement, the data field and Head information just constitutes a complete RLC PDU, the RLC PDU is then sent to receiving side RLC entity, the RLC PDU Head information in include a SN, and every transmission one new RLC PDU, SN just increase by 1.It is received in receiving side RLC entity After some RLC PDU, need according to feedback mechanism include in the state report to sending side RLC entity status report The SN for the RLC PDU that RLC entity in sending side in need retransmits.After when sending side, RLC entity receives the state report, just need It to be retransmitted according to the RLC PDU that current transmission opportunity and the data package size that can be sent retransmit needs, if working as The preceding data package size that can be sent is less than the size for needing the RLC PDU retransmitted, then RLC entity in sending side is needed to needs The data field of the RLC PDU of re-transmission is segmented again, and the head information corresponding for the data domain construction after each segmentation, Multiple RLC PDU segmentations are finally constituted, all RLC PDU segmentation of composition is then sent to receiving side RLC entity.Certainly, Receiving side RLC entity also needs after receiving some RLC PDU segmentations, is sent out according to feedback mechanism to sending side RLC entity State report is sent, in state report at this time other than the RLC PDU comprising re-transmission in need is segmented corresponding SN, it is also necessary to wrap Initial position and end position of the data field of the RLC PDU segmentation of the re-transmission containing the needs in the data field of former RLC PDU, and Need some fields also to indicate currently to need behind the RLC PDU retransmitted segmentation whether also to include that a pair of of needs retransmit Initial position and end position of the data field of RLC PDU segmentation in the data field of former RLC PDU, so as to sending side RLC reality Body can retransmit the RLC PDU segmentation that needs retransmit according to the state report received.
Wherein, the size and transmission opportunity for the transmittable data that RLC entity in sending side is notified according to sending side MAC entity, To receiving side RLC entity send RLC PDU format as shown in Figure 1, also, receiving side RLC entity receiving sending side After some RLC PDU that RLC entity is sent, need according to feedback mechanism to sending side RLC entity status report, the shape The SN of the RLC PDU retransmitted in state report comprising RLC entity in sending side in need.
In the prior art, the PDU of rlc layer can be divided into two types, one is data PDU, one is control PDU, Specific: RLC PDU and RLC PDU segmentation generally belong to data PDU, and state report then belongs to control PDU, i.e. sending side The data packet that RLC entity is sent to receiving side RLC entity is data PDU, and receiving side RLC entity is to sending side RLC Entity feedback Data packet be control PDU.The format structure of RLC PDU as shown in Figure 1 may include:
The domain data/control (Date/Control, D/C): being used to indicate data packet is data PDU or control PDU；
Weight the domain segment identification (Re-segmentation Flag, RF): be used to indicate data packet be complete RLC PDU also It is RLC PDU segmentation；
The domain poll bit (Polling Bit, P): it is used to indicate whether sending side RLC entity needs receiving side RLC entity Condition report feedback；
The domain framing information (Framing Info, FI): first and the last one are used to indicate in the data field of RLC PDU RLC SDU or RLC SDU are segmented the beginning and end for whether having respectively corresponded a RLCSDU；
The domain extended bit (Extension Bit, E): being used to indicate back, whether there are one the domain E and a domains LI；
The domain SN: it is used to indicate the sequence number of RLC PDU；
The domain LI: it is used to indicate the byte number that RLC SDU or RLC SDU are segmented in the data field of RLC PDU；
Fill the domain (Padding)；
The domain data (Data)；
It should be strongly noted that being more than or equal to 3 with k is to exemplify in the format of RLC PDU as shown in Figure 1, when So, k may be 1 or 2.
Since the size of the transmittable data of MAC entity notice may change, then sending side RLC entity receives After the state report sent to receiving side RLC entity, just need according to the current size that can send data to needing weight The RLC PDU of biography is retransmitted, wherein is less than the big of the RLC PDU for needing to retransmit in the current size that can send data In the case where small, sending side RLC entity needs to carry out weight to the data field for the RLC PDU that needs retransmit according to weight fragmentation scheme Segmentation, and the head information corresponding for the data domain construction after each segmentation finally constitute multiple RLC PDU segmentations, In, the format of RLC PDU segmentation in the prior art is as shown in Figure 2.Wherein, the format being segmented in RLC PDU as shown in Figure 2 In, compared to the format of RLC PDU as shown in Figure 1, have more the domain LSF and the domain SO, in which:
Last domain segmentation markers (Last Segment Flag, LSF): it is used to indicate whether RLC PDU segmentation is former complete The last one segmentation of RLC PDU；
Grading excursion (Segment Offset, SO) is used to indicate the data field of RLC PDU segmentation in former complete RLC PDU Data field in offset；
Effect, the embodiment of the present invention identical as the effect of corresponding domain in the format of RLC PDU as shown in Figure 1 of its co-domain This is no longer going to repeat them, also needs to illustrate, in the format of RLC PDU segmentation as shown in Figure 2, is more than or equal to 3 with k To exemplify, certainly, k may be 1 or 2.
Then, all RLC PDU segmentation of composition is sent to receiving side RLC entity, receiving side by sending side RLC entity RLC entity, when judgement, which obtains certain RLC PDU segmentations, to be not successfully received, also needs after receiving some RLC PDU segmentations Continue according to feedback mechanism to sending side RLC entity status report.
Wherein, the format of state report in the prior art is as shown in figure 3, specifically, in state report as shown in Figure 3 Format in, comprising:
The domain D/C: being used to indicate data packet is data PDU or control PDU；
Control domain PDU type (Control PDU Type, CPT): it is used to indicate the type of control PDU (in the prior art It is only a kind of: to indicate that the type of control PDU is status PDU with 000)；
Confirmation domain sequence number (Acknowledgement_SN, ACK_SN): it is used to indicate the RLC for not needing to retransmit at present The sequence number of a maximum RLC PDU in the sequence number of PDU；
The domain negative acknowledgement sequence number (Negative Acknowledgement_SN, NACK_SN): needs are used to indicate The sequence number of RLC PDU or RLC the PDU segmentation of re-transmission；
SO originates the domain (SOstart): being used to indicate the data field for the RLC PDU segmentation for needing to retransmit in former complete RLC Initial position in the data field of PDU；
SO terminates the domain (SOend): being used to indicate the data field for the RLC PDU segmentation for needing to retransmit in former complete RLC PDU Data field in end position；
The domain E1: being used to indicate back, whether there are also NACK_SN；
The domain E2: being used to indicate back, whether there are also a pair of SOstart and SOend.
By Fig. 3 it is recognised that in addition to the RLC PDU comprising re-transmission in need is segmented corresponding SN in state report at this time Outside, it is also necessary to initial position of the data field in the data field of former RLC PDU of the RLC PDU segmentation retransmitted comprising the needs and End position, so that sending side RLC entity can carry out the RLC PDU segmentation that needs retransmit according to the state report received It retransmits, that is to say, that when receiving side RLC entity needs sending side RLC entity to retransmit RLC PDU segmentation, receiving side RLC entity It needs just enable sending side RLC entity correct comprising a large amount of information in the state report sent to sending side RLC entity To needs retransmit RLC PDU segmentation retransmit, the state report expense of receiving side RLC Entity feedback will be caused in this way It is larger.
In order to solve technical problem mentioned above, the present invention provides a kind of wireless link control transmission methods, pass through Cancel the heavy fragmentation scheme of sending side RLC entity, so that receiving side RLC entity is when some initial data section needs to retransmit It waits, the state report of the SN only comprising the initial data section for needing to retransmit need to be only sent to sending side RLC entity.It is specific to implement Process may refer to embodiment provided by the invention.
One embodiment of the invention provides a kind of sending side RLC entity, as shown in figure 4, sending side RLC entity can wrap It includes: transmission unit 101, receiving unit 102, data segment set generation unit 103 and RLC PDU acquiring unit 104.
Transmission unit 101, for sending the first rlc protocol data cell PDU, the first RLC to receiving side RLC entity PDU includes the first data segment set generated according to initial data section, and the first data segment set includes multiple data segments, institute Stating the first RLC PDU includes the initial data section sequence number SN.
Receiving unit 102, it is described for receiving the state report for the carrying SN that the receiving side RLC entity is sent State report is sent after the receiving side RLC entity determination cannot obtain the initial data section.
Data segment set generation unit 103, the SN for being obtained according to the receiving unit 102 generate described original Second data segment set of data segment.
RLC PDU acquiring unit 104, second number for being generated according to the data segment set generation unit 103 The 2nd RLC PDU is obtained according to section set.
Further, the transmission unit 101 can be also used for obtain the RLC PDU acquiring unit 104 described Two RLC PDU are sent to the receiving side RLC entity, so that the receiving side RLC entity is according to the first RLC PDU and institute It states the 2nd RLC PDU and obtains the initial data section.
Further alternative, the received state report of receiving unit 102, which can also carry, retransmits data segment Number.
As shown in figure 5, the sending side RLC entity can also comprise determining that unit 105.
Determination unit 105, for generating the initial data according to the SN in the data segment set generation unit 103 Before second data segment set of section, according to the received number determination for retransmitting data segment of the receiving unit 102 The data segment number in the second data segment set generated, wherein the data segment number in the second data segment set is greater than Or equal to the number for retransmitting data segment.
It is further alternative, the data segment set generation unit 103, can be also used for the transmission unit 101 to Before receiving side RLC entity sends the first RLC PDU, the first data segment set of the initial data section is generated.
The RLC PDU acquiring unit 104 can be also used for according to the data segment set generation unit 103 generation The first data segment set obtains the first RLC PDU.
Further alternative, the sending side RLC entity can also include: vector table acquiring unit 106, storage unit 107。
Vector table acquiring unit 106, for generating the initial data section in the data segment set generation unit 103 Before the first data segment set, coefficient vector table is obtained；It include M coefficient vector in the coefficient vector table, the M is a The corresponding call number of each coefficient vector in coefficient vector, the M is positive integer.
Storage unit 107, the coefficient vector table obtained for storing the vector table acquiring unit 106.
The data segment set generation unit 103 specifically can be used for:
Obtain the sub- bit string set to be sent of the initial data section, the sub- bit string set to be sent of the initial data section In comprising S section sub- bit strings (wherein, bit string is bit string) to be sent, each of described S sections of sub- bit string to be sent is pending The length for sending sub- bit string is L, and the S and the L are positive integer.
The sub- bit string set to be sent of the initial data section is stored into memory.
N number of coefficient vector is chosen from the coefficient vector table that the storage unit 107 stores；The N be greater than or Equal to the S, and it is less than or equal to the positive integer of the M.
According to the sub- bit string set to be sent of the initial data section of the storage and the coefficient of the selection to Amount generates the first data segment set；It include N number of data segment in the first data segment set.
Further alternative, the sending side RLC entity can also include: an information acquisition unit 108.
Head information acquisition unit 108, for being generated in the RLC PDU acquiring unit 104 according to the data segment set Before the first data segment set that unit 103 generates obtains the first RLC PDU, first of the initial data section is obtained Information, first information carry the call number domain of the first RLC PDU.
The RLC PDU acquiring unit 104, specifically can be used for:
According to the size of current transmittable data, B data segment structure is chosen from the first data segment set of the generation At the data field of the first RLC PDU；The B is the positive integer less than or equal to the N.
First information and described first for the initial data section that the head information acquisition unit 108 is obtained First RLC PDU described in the data field combination producing of RLC PDU.
Further alternative, the data segment set generation unit 103 may include: acquisition submodule 1031, divide son Module 1032.
Acquisition submodule 1031, for obtaining the bit string to be sent of the initial data section；The length of the bit string to be sent Degree is S*L.
Submodule 1032 is divided, the bit string to be sent for obtaining the acquisition submodule 1031 divide To the sub- bit string set to be sent comprising described S sections sub- bit string to be sent.
Further alternative, the acquisition submodule 1031 specifically can be used for:
According to the caching sequence of RLC SDU in RLC Service Data Unit SDU pre-stored in memory set, from institute The bit string that intercepted length is S*L in RLC SDU set is stated, the bit string for being S*L using the length is as the initial data The bit string to be sent of section.
The acquisition submodule 1031, specifically can be used for:
According to the caching sequence of RLC SDU in RLC SDU pre-stored in memory set, from the RLC SDU collection The bit string that intercepted length is X in conjunction；The length is that X bit strings are the initial data section.
Internal layer head information is obtained according to the bit string that the length is X, wherein comprising except last in the internal layer head information One RLC SDU perhaps RLC SDU segmentation outside each RLC SDU and/or RLC SDU segmentation length information or described Include the boundary demarcation information between all RLC SDU and/or RLC SDU segmentation in internal layer head information.
The length is formed to the bit string to be sent of the initial data section for X bit strings and the internal layer head information.
Further alternative, the data segment set generation unit 103 can also include: addition submodule 1033.
Submodule 1033 is added, for obtaining the bit string to be sent of the initial data section in the acquisition submodule 1031 Before, the every two RLC SDU boundary addition delimiter in memory in pre-stored RLC SDU set obtains new RLC SDU set.
The acquisition submodule 1031, specifically can be used for obtaining according to the addition submodule 1033 is described new The caching sequence of RLC SDU in RLC SDU set, the bit string that intercepted length is S*L from the new RLC SDU set, The length is the bit string to be sent that S*L bit strings are the initial data section, and the length is removes institute in S*L bit strings Stating the bit string except delimiter is the initial data section.
Further alternative, the data segment set generation unit 103 specifically can be used for from the storage unit 107 N number of coefficient vector is sequentially chosen in the coefficient vector table of storage.
The call number domain for the first RLC PDU that the head information acquisition unit 108 obtains only includes the first RLC The smallest coefficient vector of call number in the coefficient vector of the corresponding selection of the B data segment in the data field of PDU.
Further alternative, the data segment set generation unit 103 is specifically used for storing from the storage unit 107 The coefficient vector table in randomly select N number of coefficient vector；
It include the first RLC in the call number domain for the first RLC PDU that the head information acquisition unit 108 obtains The call number of each coefficient vector in the coefficient vector of the corresponding selection of the B data segment in the data field of PDU.
Further alternative, the head information acquisition unit 108 specifically can be used for constructing the of the initial data section One information.
The storage unit 107 can be also used for the initial data section for obtaining the head information acquisition unit 108 First information store into the memory.
Wherein, it is removed in first information of the initial data section comprising include in the SN, the initial data section Length information and the institute of each RLC SDU and/or RLC SDU segmentation outside the last one RLC SDU or RLC SDU segmentation State the call number domain of the first RLC PDU.
Further alternative, the head information acquisition unit 108 specifically can be used for constructing comprising the SN and described First information of the initial data section in the call number domain of the first RLC PDU.
Further alternative, the vector table acquiring unit 106 can be also used in the data segment set generation unit Before 103 generate the second data segment set of the initial data section according to the SN, obtained from the storage unit 107 described Coefficient vector table.
The data segment set generation unit 103 specifically can be used for received described according to the receiving unit 102 SN reads the sub- bit string set to be sent of the initial data section from the memory；According to the data segment number, from institute State the not used coefficient vector that respective numbers are chosen in the coefficient vector table of the acquisition of vector table acquiring unit 106；According to The sub- bit string set to be sent of the initial data section and the not used coefficient vector of the selection generate described second Data segment set.
Further alternative, the head information acquisition unit 108 can be also used in the RLC PDU acquiring unit 104 Before obtaining the 2nd RLC PDU according to the second data segment set, second information of the initial data section is obtained, it is described Second information includes the call number domain of the 2nd RLC PDU.
The RLC PDU acquiring unit 104 specifically can be used for the size according to current transmittable data, from described the The data field that A data segment constitutes the 2nd RLC PDU is chosen in two data segment set；The A is less than or equal to described The positive integer of data segment number in second data segment set；The original number that the head information acquisition unit 108 is obtained According to the 2nd RLC PDU described in second information of section and the data field combination producing of obtained the 2nd RLC PDU.
Further alternative, the data segment set generation unit 103 specifically can be used for according to second data segment Data segment number in set sequentially chooses the not used coefficient vector of respective numbers from the coefficient vector table.
The call number domain for the 2nd RLC PDU that the head information acquisition unit 108 obtains only includes the 2nd RLC Lowest index number in the corresponding not used coefficient vector of the A data segment in the data field of PDU.
Further alternative, the data segment set generation unit 103 specifically can be used for according to second data segment Data segment number in set randomly selects the not used coefficient vector of respective numbers from the coefficient vector table.
Wherein, described the is included in the call number domain for the 2nd RLC PDU that the head information acquisition unit 108 obtains The call number of the corresponding each not used coefficient vector of the A data segment in the data field of two RLC PDU.
Further alternative, the head information acquisition unit 108 specifically can be used for according to the SN, from the storage First information of the initial data section is read in device, and described in will including in first information of the initial data section SN, the initial data section first information in include the initial data section in include except the last one RLC SDU Or the length information and the 2nd RLC PDU of each RLC SDU and/or RLC SDU segmentation outside RLC SDU segmentation Call number domain combination producing described in initial data section second information.
Further alternative, the head information acquisition unit 108 specifically can be used for constructing comprising the SN and described Second information of the initial data section in the call number domain of the 2nd RLC PDU.
Further alternative, the vector table acquiring unit 106 specifically can be used for:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the receiving side RLC entity is sent；The coefficient vector table is the receiving side The RLC entity S and L based on the received, is calculated according to vandermonde matrix or Cauchy matrix；Alternatively,
According to the S and the L, according to the vandermonde matrix or the Cauchy matrix be calculated the coefficient to Scale.
It should be noted that the specific descriptions of functional module can be in RLC entity in sending side provided in an embodiment of the present invention With reference to the specific descriptions of corresponding content in embodiment of the method, in this not go into detail for the embodiment of the present invention.
RLC entity in sending side provided in an embodiment of the present invention includes according to initial data section to the transmission of receiving side RLC entity First RLC PDU of the first data segment set generated is receiving the carrying of the receiving side RLC entity transmission initial data section After the state report of SN, the second data segment set of the initial data section is generated according to the SN, and according to the second data segment collection It closes and obtains the 2nd RLC PDU, and be sent to receiving side RLC entity, so that receiving side RLC entity is according to the first RLC PDU and the Two RLC PDU obtain initial data section, in this way when receiving side RLC entity determination can not get some initial data section, By sending state report only comprising initial data section SN to sending side RLC entity, reduce anti-to sending side RLC entity Present the expense of state report.
Another embodiment of the present invention provides a kind of receiving side RLC entities, as shown in fig. 6, receiving side RLC entity can wrap It includes: receiving unit 201, transmission unit 202, data segment acquiring unit 203.
Receiving unit 201, for receiving the first rlc protocol data cell PDU of sending side RLC entity transmission, described the One RLC PDU includes the first data segment set generated according to initial data section, and the first data segment set includes multiple numbers According to section, the first RLC PDU includes the initial data section sequence number SN.
Transmission unit 202, for when determination cannot obtain the initial data section, the sending side Xiang Suoshu RLC entity to be sent out Send the state report for carrying the SN；Wherein, the SN generates the second data segment set, root for the sending side RLC entity The 2nd RLC PDU is obtained according to the second data segment set, the second data segment set is according to the initial data Duan Sheng At.
The receiving unit 201 can be also used for receiving the 2nd RLC PDU that the sending side RLC entity is sent.
Data segment acquiring unit 203, for according to the received first RLC PDU of the receiving unit 201 and described 2nd RLC PDU obtains the initial data section.
It is further alternative, as shown in fig. 7, the receiving side RLC entity can also include: number acquiring unit 204.
Number acquiring unit 204, for obtaining the number for retransmitting data segment.
The state report that the transmission unit 202 is sent also carries the re-transmission that the number acquiring unit 204 obtains The number of data segment, the number for retransmitting data segment determine second data generated for the sending side RLC entity Data segment number in Duan Jihe, wherein the data segment number in the second data segment set is greater than or equal to the re-transmission The number of data segment.
Further alternative, the receiving side RLC entity can also include: vector table acquiring unit 205, determination unit 206。
Vector table acquiring unit 205, for obtaining coefficient vector table；It wherein, include M coefficient in the coefficient vector table Vector, the corresponding call number of each coefficient vector in the M coefficient vector；The M is positive integer.
Determination unit 206, for according to the first RLC PDU call number domain and the vector table acquiring unit 205 The coefficient vector table obtained obtains coefficient vector corresponding to each data segment, group in the first data segment set At coefficient vector set；According to the coefficient vector set, calculate rank of matrix that the coefficient vector collection is combined into whether etc. In the number of segment that S, the S divide the corresponding bit string to be sent of the initial data section for the sending side RLC entity, the S For positive integer；When the rank of matrix that the coefficient vector collection of calculating is combined into is not equal to S, it is determined that the original cannot be obtained Beginning data segment；Or when the rank of matrix that the coefficient vector collection of calculating is combined into is equal to S, it is determined that the original can be obtained Beginning data segment.
Further alternative, the vector table acquiring unit 205 specifically can be used for:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the sending side RLC entity is sent；The coefficient vector table is the sending side RLC entity is calculated according to the S and L according to vandermonde matrix or Cauchy matrix；The S and L is for described Sending side RLC entity obtains the corresponding bit string to be sent of the initial data section, and L is positive integer；Alternatively,
The S and L based on the received is calculated described according to the vandermonde matrix or the Cauchy matrix Coefficient vector table.
It should be noted that the specific descriptions of functional module can be in receiving side RLC entity provided in an embodiment of the present invention With reference to the specific descriptions of corresponding content in embodiment of the method, in this not go into detail for the embodiment of the present invention.
Receiving side RLC entity provided in an embodiment of the present invention includes according to original receive the transmission of sending side RLC entity After first RLC PDU of the first data segment set that beginning data segment generates, when determination can not get the initial data section When, state report only comprising initial data section SN is sent to sending side RLC entity, so that sending side RLC entity is according to shape The SN for including in state report obtains the 2nd RLC PDU, and is sent to receiving side RLC entity, and receiving side RLC entity can root Initial data section is obtained according to the first RLC PDU and the 2nd RLC PDU, can not be got in receiving side RLC entity determination in this way When some initial data section, by sending state report only comprising initial data section SN to sending side RLC entity, reduce To the expense of sending side RLC Entity feedback state report.
Another embodiment of the present invention provides a kind of wireless link control transmission methods, as shown in figure 8, this method can wrap It includes:
301, RLC entity in sending side sends the first RLC PDU to receiving side RLC entity.
Wherein, the first RLC PDU includes the first data segment set generated according to initial data section, first data segment Set may include multiple data segments, and the first RLC PDU includes initial data section SN.It should be noted that this RLC PDU can refer to a RLC PDU or refer to multiple RLC PDU, include according to initial data Duan Sheng in each RLC PDU At the first data segment set.
302, RLC entity in sending side receives the state report for the carrying initial data section SN that receiving side RLC entity is sent.
Wherein, which sent after receiving side RLC entity determination cannot obtain the initial data section.
Specifically, determination cannot obtain initial data section when receiving side RLC entity is according to the first RLC PDU received When, receiving side RLC entity can send the state report for carrying initial data section SN to sending side RLC entity, send at this time Side RLC entity can receive the state report of the carrying of the receiving side RLC entity transmission SN.And in embodiments of the present invention, it is It realizes the purpose for reducing receiving side RLC Entity feedback state report expense, can only include this is original in the state report The SN of data segment.
303, RLC entity in sending side generates the second data segment set of initial data section according to SN.
Wherein, in sending side RLC entity receive receiving side RLC entity transmission carrying initial data section SN state report After reporting to, the second data segment collection of initial data section corresponding with the SN can be generated according to the SN for including in state report It closes.
304, RLC entity in sending side obtains the 2nd RLC PDU according to the second data segment set.
Wherein, the 2nd RLC PDU can be obtained according to the second data segment set in sending side RLC entity, needs especially to say Bright is that the 2nd RLC PDU can refer to a RLC PDU, can also refer to multiple RLC PDU, includes basis in each RLC PDU The second data segment set that initial data section generates.
305, the 2nd RLC PDU is sent to receiving side RLC entity by sending side RLC entity, so as to receiving side RLC entity root Initial data section is obtained according to the first RLC PDU and the 2nd RLC PDU.
Wherein, it in sending side RLC entity according to state report is received, after getting the 2nd RLC PDU, can incite somebody to action The 2nd RLC PDU got is sent to receiving side RLC entity, in this way, receiving side RLC entity can be according to first received RLC PDU and the 2nd RLC PDU obtains initial data section.
Wireless link control transmission method provided in an embodiment of the present invention, sending side RLC entity are sent out to receiving side RLC entity The first RLC PDU for sending the first data segment set including generating according to initial data section is receiving receiving side RLC entity hair After the state report of the carrying initial data section SN sent, the second data segment collection of the initial data section is generated according to the SN It closes, and the 2nd RLC PDU is obtained according to the second data segment set, and be sent to receiving side RLC entity, so that receiving side RLC is real Body obtains initial data section according to the first RLC PDU and the 2nd RLC PDU, can not obtain in receiving side RLC entity determination in this way When getting some initial data section, by sending state report only comprising initial data section SN, drop to sending side RLC entity The low expense to sending side RLC Entity feedback state report.
Another embodiment of the present invention provides a kind of wireless link control transmission methods, as shown in figure 9, this method can wrap It includes:
401, receiving side RLC entity receives the first RLC PDU that RLC entity in sending side is sent.
Wherein, the first RLC PDU includes the first data segment set generated according to initial data section, first data segment Set may include multiple data segments, and the first RLC PDU includes initial data section, it should be noted that this first RLC PDU can refer to a RLC PDU, can also refer to multiple RLC PDU, include according to initial data section in each RLC PDU The the first data segment set generated.
402, when determination can not obtain initial data section, receiving side RLC entity sends to sending side RLC entity and carries The state report of initial data section SN.
Wherein, which generates the second data segment set for sending side RLC entity, obtains the according to the second data segment set Two RLC PDU, the second data segment set is generated according to initial data section.
Specifically, determination cannot obtain some original number when receiving side RLC entity is according to the first RLC PDU received When according to section, in order to realize the purpose for reducing receiving side RLC Entity feedback state report expense, receiving side RLC entity can be to hair Side RLC entity is sent to send the state report for only carrying initial data section SN, so that receiving side RLC entity is according in state report The SN of carrying generates the second data segment set of the initial data section, if obtaining the 2nd RLC PDU according to the second data segment set, And the 2nd RLC PDU that will acquire is sent to receiving side RLC entity, it should be noted that the 2nd RLC PDU can be with Refer to a RLC PDU, can also refer to multiple RLC PDU, includes the second number generated according to initial data section in each RLC PDU According to Duan Jihe.
403, receiving side RLC entity receives the 2nd RLC PDU that RLC entity in sending side is sent.
404, receiving side RLC entity obtains initial data section according to the first RLC PDU and the 2nd RLC PDU.
It wherein, can root after the 2nd RLC PDU that receiving side RLC entity receives the transmission of sending side RLC entity Initial data section is obtained according to the first RLC PDU received and the 2nd RLC PDU.
Wireless link control transmission method provided in an embodiment of the present invention receives sending side RLC in receiving side RLC entity Entity send include according to initial data section generate the first data segment set the first RLC PDU after, when determination cannot When enough getting the initial data section, state report only comprising initial data section SN is sent to sending side RLC entity, so as to Sending side RLC entity obtains the 2nd RLC PDU according to the SN for including in state report, and is sent to receiving side RLC entity, connects Initial data section can be obtained according to the first RLC PDU and the 2nd RLC PDU by receiving side RLC entity, real in receiving side RLC in this way It only include initial data section SN's by being sent to sending side RLC entity when body determination can not get initial data section State report reduces the expense to sending side RLC Entity feedback state report.
Another embodiment of the present invention provides a kind of wireless link control transmission methods, by cancelling sending side RLC entity Weight fragmentation scheme, prevent receiving side RLC entity is when determination is from getting some initial data section, it only need to be to sending side RLC Entity sends state report only comprising initial data section SN.As shown in Figure 10, which can be with Include:
501, RLC entity in sending side obtains coefficient vector table.
Specifically, sending side RLC entity can obtain in the following manner coefficient vector table:
Sending side RLC entity reads pre-stored coefficient vector table；Alternatively,
Sending side RLC entity receives the coefficient vector table that receiving side RLC entity is sent, wherein the coefficient vector table is to connect Side RLC entity S and L based on the received is received, is calculated according to vandermonde matrix or Cauchy matrix；Alternatively,
Coefficient vector table, S is calculated according to S and L, according to vandermonde matrix or Cauchy matrix in sending side RLC entity The corresponding bit string to be sent of initial data section is obtained for sending side RLC entity with L, S and L are positive integers.
It should be noted that in embodiments of the present invention, the concrete mode that sending side RLC entity obtains coefficient vector table can To be chosen according to the demand of practical application scene, the embodiment of the present invention obtains coefficient vector to sending side RLC entity at this The mode of table is simultaneously not particularly limited.
When the mode that sending side RLC entity obtains coefficient vector table is the coefficient vector for receiving receiving side RLC entity and sending Table, or according to S and L, when coefficient vector table is calculated according to vandermonde matrix or Cauchy matrix, in sending side, RLC is real After body gets coefficient vector table, the coefficient vector table that can be will acquire is stored into memory, to facilitate subsequent use.
It wherein, include M coefficient vector in coefficient vector table, each coefficient vector in M coefficient vector is one corresponding Call number.For example, in embodiments of the present invention, which can be with are as follows:
Wherein, the first of every a line is classified as the corresponding call number of each coefficient vector, its in every a line in addition to first row He arranges one coefficient vector of composition.
It should be noted that S and L is pre-configured in sending side RLC entity and/or receiving side in embodiments of the present invention In RLC entity, S and the specific numerical value of L can be configured according to the demand of practical application scene, for example, the integer that L is 8 or 8 Times, specific value of the embodiment of the present invention at this to S and L is simultaneously not particularly limited.
When sending side RLC entity need to receiving side RLC entity send data (data be sending side RLC entity cache RLC SDU set) when, for some initial data section in the data, this is original firstly the need of generating for sending side RLC entity Then the first data segment set comprising N number of data segment of data segment obtains the first RLC according to the first data segment set of generation PDU can will need to be sent to receiving side RLC to the data that receiving side RLC entity is sent in this way by the first RLC PDU real Body.
502, RLC entity in sending side obtains the bit string to be sent of initial data section.
Wherein, the length of bit string to be sent is S*L.
Wherein, RLC entity in sending side can obtain the bit string to be sent of initial data section by one of following manner:
Mode one: sending side RLC entity according to RLC SDU pre-stored in memory gather in RLC SDU caching Sequentially, the bit string that intercepted length is S*L from RLC SDU set, and the bit string for being S*L using the length is as initial data The bit string to be sent of section, and the S*L bit string is also initial data section, packet in the S*L bit string (i.e. initial data section) It is segmented containing at least one RLC SDU and/or at least one RLC SDU.
Wherein, in embodiments of the present invention, RLC entity in sending side needs the data sent to receiving side RLC entity can be with According to the demand of practical application scene and according to caching sequence, it is divided into several initial data sections, each initial data section Length be S*L.
Wherein, need each of all initial data sections for including into the data that receiving side RLC entity is sent original Data segment respectively corresponds a SN, and the corresponding SN of initial data section gradually adds 1 according to stripe sequence.Institute in the embodiment of the present invention The initial data section stated is any one in all initial data sections for needing to include in the data sent to receiving side RLC entity It is a.
Mode two: sending side RLC entity is first, in accordance with RLC SDU in RLC SDU pre-stored in memory set Caching sequence, the bit string that intercepted length is X from RLC SDU set, the length are that X bit strings are initial data section；
Then, RLC entity in sending side obtains the internal layer head for the bit string that the length is X according to the bit string that the length is X Information, in which:
In the bit string for being X comprising the length in the internal layer head information, the last one RLC SDU or RLC SDU is removed The length information of each RLC SDU and/or RLC SDU segmentation outside segmentation；Or
In the bit string for being X comprising the length in the internal layer head information, between all RLC SDU and/or RLC SDU segmentation Boundary demarcation information；
Finally, the internal layer head information group for the bit string that the bit string that length is X is X with the length by sending side RLC entity At bit string to be sent, wherein the length of the bit string to be sent of composition is S*L.
For example, to include each RLC in addition to the last one RLC SDU or RLC SDU segmentation in internal layer head information For the length information of SDU and/or RLC SDU segmentation, the format of the internal layer head information can be expressed as lattice as shown in figure 11 Formula.Wherein, the domain FI is used to indicate whether first and the last one RLC SDU or RLC SDU segmentation in the bit string that length is X divides The beginning and end of a RLC SDU has not been corresponded to, and the domain E is used to indicate back, and whether there are one the domain E and a domains LI；The domain LI It is used to indicate the byte number of RLC SDU or RLC the SDU segmentation in the bit string that the length is X included.
It should be noted that the form schematic diagram of the internal layer head information as shown in figure 11 provided in embodiments of the present invention Only illustrate the domain that may include in the internal layer head information, and the length to each domain and without specifically limiting, Tu11Zhong Shown in each length of field be a kind of signal, that is to say, that the domain that the embodiment of the present invention includes to internal layer head information at this Type and the length in each domain are simultaneously not particularly limited, the type in the domain for including in specific internal layer head information and each The length in domain can be configured according to the demand of practical application scene, and the present invention includes being not limited to mode mentioned above.
Mode three: before the bit string to be sent that sending side RLC entity obtains initial data section, firstly, sending side RLC is real Body every two RLC SDU boundary addition delimiter in RLC SDU set obtains new RLC SDU set, the RLC SDU collection Conjunction is pre-stored in memory；
Then, sending side RLC entity according to RLC SDU in new RLC SDU set caching sequence, from new RLC The bit string that intercepted length is S*L in SDU set, the bit string which is S*L is the bit string to be sent of initial data section, should Bit string in the bit string that length is S*L in addition to delimiter is initial data section.
For example, sending side RLC entity can be in the delimiter that boundary mentioned above adds it is a certain predetermined Bit string, such as " 10000001 ", but the bit string " 10000001 " is possible to occur in RLC SDU, therefore sends out Send side RLC entity that can first be scanned to pre-stored RLC SDU set, if there are continuous 5 " 0 " for discovery, just One " 1 " is filled out behind the last one " 0 " in continuous 5 " 0 ", " 10000001 " occurs to avoid in RLC SDU.It is logical Delimiter is crossed to record the boundary demarcation information of RLC SDU, thus compared to mode two for, it is corresponding not have to construction initial data section Internal layer head information.
503, it includes the to be sent of S sections of sub- bit strings to be sent that bit string to be sent is divided to obtain by sending side RLC entity Sub- bit string set.
It wherein, can be by the position to be sent after in sending side, RLC entity gets the bit string to be sent of initial data section Go here and there every L be divided into a sub- bit string to be sent, then can be obtained S sections of sub- bit strings to be sent, the S sections of sub- bit string to be sent forms Sub- bit string set to be sent.For example, S sections of sub- bit strings to be sent can be denoted as respectively: x1, x2..., xS, then son to be sent Bit string set is { x1, x2..., xS}。
In embodiments of the present invention, further, in sending side, RLC entity gets the sub- position to be sent of initial data section After set of strings, the sub- bit string set to be sent for the initial data section that can be will acquire is stored into memory, with convenient Subsequent use.
504, RLC entity in sending side chooses N number of coefficient vector from coefficient vector table.
Wherein, N is the positive integer more than or equal to S, and less than or equal to M.In sending side, RLC entity gets original number After the sub- bit string set to be sent of section, N number of coefficient vector can be chosen from coefficient vector table.
Specifically, sending side RLC entity chooses N number of coefficient vector specifically from coefficient vector table may include:
Sending side RLC entity can sequentially choose N number of coefficient vector from coefficient vector table；Alternatively,
Sending side RLC entity can randomly select N number of coefficient vector from coefficient vector table.
505, RLC entity in sending side is according to N number of coefficient vector of the sub- bit string set and selection to be sent of initial data section, Generate the first data segment set.
It wherein, include N number of data segment in the first data segment set.In sending side, RLC entity gets initial data section Sub- bit string set to be sent can will be in N number of coefficient vector and from being chosen in coefficient vector table to after N number of coefficient vector Each coefficient vector calculated respectively with the sub- bit string set to be sent of the initial data section that gets, obtain comprising N First data segment set of a data segment, and the length of each data segment is L.For example, N number of data segment can be remembered respectively Are as follows: y1, y2..., yN, then the first data segment set is { y1, y2..., yN, and sending side RLC entity is from coefficient vector It is sequentially chosen in table and obtains N number of coefficient vector, then, according to sub- bit string set { x to be sent1, x2..., xSAnd N number of coefficient Vector obtains the first data segment set { y1, y2..., yNCan be formulated are as follows:
506, RLC entity in sending side obtains first information of initial data section.
Wherein, which carries the call number domain of the first RLC PDU.In sending side, RLC entity is got original After the sub- bit string set to be sent of data segment, first letter of the initial data section according to the requirement of rlc protocol, can be obtained Breath.
Specifically, when RLC entity in sending side obtains the to be sent of initial data section by the mode one described in step 502 When bit string, first information for obtaining the initial data section specifically may include:
First information of the initial data section is constructed, and in first information of the initial data section includes but unlimited Include in the SN of: the initial data section, the initial data section in addition to the last one RLC SDU or RLC SDU segmentation The length information of each RLC SDU and/or RLC SDU segmentation and the call number domain of the first RLC PDU；Secondly, being obtained described First information of the initial data section taken is stored into the memory.
Wherein, the call number domain for the first RLC PDU that first information carries specifically may is that when sending side RLC entity When sequentially choosing N number of coefficient vector from coefficient vector table, the call number domain of the first RLC PDU only includes the first RLC PDU The smallest coefficient vector of call number in the corresponding coefficient vector of B data segment in data field；Alternatively, working as sending side RLC entity When randomly selecting N number of coefficient vector from coefficient vector table, the call number domain of the first RLC PDU includes the number of the first RLC PDU According to the call number of each coefficient vector in the corresponding coefficient vector of B data segment in domain.
Alternatively, when RLC entity in sending side passes through the mode two or the acquisition initial data of mode three described in step 502 When the bit string to be sent of section, first information for obtaining the initial data section specifically may include:
First letter of the initial data section in the call number domain of SN and first RLC PDU of the construction comprising initial data section Breath.
Wherein, the call number domain for the first RLC PDU that first information carries specifically may is that when sending side RLC entity When sequentially choosing N number of coefficient vector from coefficient vector table, the call number domain of the first RLC PDU only includes the first RLC PDU The smallest coefficient vector of call number in the corresponding coefficient vector of B data segment in data field；Alternatively, working as sending side RLC entity When randomly selecting N number of coefficient vector from coefficient vector table, the call number domain of the first RLC PDU includes the number of the first RLC PDU According to the call number of each coefficient vector in the corresponding coefficient vector of B data segment in domain.
507, RLC entity in sending side chooses B number according to the size of current transmittable data from the first data segment set The data field of the first RLC PDU is constituted according to section.
Wherein, B is the positive integer less than or equal to N.In sending side, RLC entity is according to the sub- position to be sent of initial data section N number of coefficient vector of set of strings and selection, after generating the first data segment set, when sending side, RLC entity receives sending side It, can be according to the size of current transmittable data, from the first data segment when the current transmittable data segment size of MAC entity notice The data field that B data segment constitutes the first RLC PDU is chosen in set, wherein B data are chosen from the first data segment set The sum of length and the length of first information of initial data section of section are less than or equal to the size of current transmittable data (also It is to say, the specific value of the number B for the data segment chosen from the first data segment set can be according to current transmittable data The length computation of first information of size and initial data section obtains).
Optionally, it is chosen from the first data segment set in sending side RLC entity according to the size of current transmittable data Before B data segment constitutes the data field of the first RLC PDU, sending side RLC entity can receive the transmission of sending side MAC entity The size and transmission opportunity of current transmittable data.Certainly, in the embodiment of the present invention, in one possible implementation, hair Send side RLC entity can after receiving the size of current transmittable data of sending side MAC entity transmission and transmission opportunity, Step 502- step 506 is executed again, alternatively, sending side RLC entity can also first carry out in alternatively possible implementation Step 502- step 505, the size and transmission opportunity of the current transmittable data waiting for receiving the transmission of sending side MAC entity it Afterwards, then step 506 is executed, that is to say, that sending side RLC entity can be prepared in advance the first data segment set, waiting to receive After the size and transmission opportunity of the current transmittable data of sending side MAC entity, directly according to the big of current transmittable data Small and preprepared first data segment set constructs the data field of the first RLC PDU.In this way, compared to hair is being received The the first data segment set of size and transmission opportunity and then acquisition for the current transmittable data for sending side MAC entity to send, and structure The implementation for making the data field of the first RLC PDU can reduce the time delay for obtaining the data field of the first RLC PDU.
508, RLC entity in sending side combines the data field of first information of initial data section and the first RLC PDU Generate the first RLC PDU.
Wherein, in sending side, RLC entity gets first information of initial data section and the data of the first RLC PDU After domain, first information of the initial data section that can be will acquire and the data field combination producing of the first RLC PDU First RLC PDU.
For example, in the first possible implementation of the embodiment of the present invention, when sending side RLC entity passes through step 502 Described in mode one when obtaining the bit string to be sent of initial data section, the format of the first RLC PDU of combination producing can be as Shown in Figure 12.
In second of possible implementation of the embodiment of the present invention, when sending side RLC entity passes through institute in step 502 When the mode two or mode three stated obtain the bit string to be sent of initial data section, the format of the first RLC PDU of combination producing It can be as shown in Figure 13 or 14, wherein only containing an initial data in the format of the first RLC PDU as shown in fig. 13 that The SN of section contains the SN of multiple initial data sections, therefore increase in the format of the first RLC PDU as shown in figure 14 The domain number (Number), is used to indicate the number of data segment corresponding with SN.
Since weight fragmentation scheme eliminates, just do not have to using the format of RLC PDU as shown in Figure 1 and such as Fig. 2 institute The domain RF in the format for the RLC PDU segmentation shown is segmented to distinguish RLC PDU and RLC PDU, that is to say, that implements in the present invention The setting domain RF is not needed in the format of the first RLC PDU as shown in figure 12 in example, the embodiment of the present invention is herein by the domain RF Become the position reservation (Reserve, R), certainly, also may include guarantor in the format of the first RLC PDU shown in Figure 13 and Figure 14 Stay a R.
And the format of the format and RLC PDU segmentation as shown in Figure 2 compared to RLC PDU as shown in Figure 1, such as scheme It newly joined call number (index) domain in the format of the first RLC PDU of 12- Figure 14, be used to indicate used first Call number of a coefficient vector in coefficient vector table, or used all coefficient vectors are used to indicate in coefficient vector table In call number, and may include multiple data segments in data field, the effect of co-domain and the lattice of RLC PDU as shown in Figure 1 The effect of corresponding domain is identical in formula, and this is no longer going to repeat them for the embodiment of the present invention.
It should be noted that the form schematic diagram of the first RLC PDU provided in embodiments of the present invention only illustrates to be somebody's turn to do Which needed in first RLC PDU comprising necessary domain, and the length to each domain and without specifically limiting, Figure 12-14 Shown in each length of field be a kind of signal, that is to say, that the domain that the embodiment of the present invention includes to the first RLC PDU at this Type and the length in each domain are simultaneously not particularly limited, the type in the domain for including in specific first RLC PDU and each The length in domain can be configured according to the demand of practical application scene.
509, RLC entity in sending side sends the first RLC PDU to receiving side RLC entity.
Wherein, according to step 502- step 508 it is found that the first RLC PDU includes the generated according to initial data section (wherein, the specific value of the number B of the data segment in the first data segment set can be with for B data segment in one data segment set According to the size of the current transmittable data of sending side MAC entity notice and the length of first information of initial data section It is calculated), and the SN including the initial data section.In sending side RLC entity by first information of initial data section and After the first RLC PDU of data field combination producing of first RLC PDU, the first RLC PDU of combination producing can be sent To receiving side RLC entity.
When B is less than N, shows that the data segment in the first data segment set does not carry all and sent out in the first RLC PDU It send to receiving side RLC entity, RLC entity in sending side can receive again the current of sending side MAC layer entity notice at this time After transmittable data segment size, it is re-execute the steps 507- step 509, until by N number of data in the first data segment set Section is all transmitted to receiving side RLC entity, that is to say, that sending side RLC entity is possible to will be in the first data segment set The carrying of N number of data segment receiving side RLC entity is sent in the first RLC PDU, also, due to being taken in this first RLC PDU The data segment of band is obtained according to the same initial data section, therefore the SN of this first RLC PDU is identical, in this way compared to existing skill It, can the digit appropriate that the domain SN be reduced for the SN of each RLC PDU is all different in art.Certainly, needs are sent to For the data of receiving side RLC entity, each initial data section in all initial data sections for being included, is sending side RLC entity is sent to receiving side RLC entity by step 502- step 509.
510, receiving side RLC entity receives the first RLC PDU that RLC entity in sending side is sent.
Wherein, the first RLC PDU is sent to receiving side RLC entity in sending side RLC entity (to wrap in the first RLC PDU Include N number of data segment in the first data segment set generated according to initial data section) after, receiving side RLC entity can connect The first RLC PDU of side RLC entity transmission is transmitted and received, but sends the first RLC to receiving side RLC entity in sending side RLC entity During PDU, due to various reasons, the first RLC PDU is possible to lose, therefore receiving side RLC entity is practical connects As soon as the number of the first RLC PDU received is likely less than the number of the practical RLC PDU sent of sending side RLC entity, It is to say, the first data segment collection generated according to initial data section for including in the first RLC PDU that receiving side RLC entity receives Data segment number in conjunction is likely less than or is equal to N.
511, receiving side RLC entity obtains coefficient vector table.
It wherein, include M coefficient vector in the coefficient vector table, each coefficient vector corresponding one in M coefficient vector A call number, M are positive integer.Specifically, receiving side RLC entity can obtain in the following manner coefficient vector table:
In the first possible implementation of the embodiment of the present invention, receiving side RLC entity reads pre-stored system Number vector table.
Alternatively, receiving side RLC entity receives sending side in second of possible implementation of the embodiment of the present invention The coefficient vector table that RLC entity is sent, wherein the coefficient vector table is sending side RLC entity according to S and L, according to Vandermonde What matrix or Cauchy matrix were calculated.S and L obtains the corresponding bit string to be sent of initial data section for sending side RLC entity.
Alternatively, in the third possible implementation of the embodiment of the present invention, receiving side RLC entity S based on the received And L, coefficient vector table is calculated according to vandermonde matrix or Cauchy matrix.
It should be noted that in embodiments of the present invention, the concrete mode that receiving side RLC entity obtains coefficient vector table can To be chosen according to the demand of practical application scene, the embodiment of the present invention obtains coefficient vector to receiving side RLC entity at this The mode of table is simultaneously not particularly limited.And when the mode that receiving side RLC entity obtains coefficient vector table is to receive sending side RLC reality The coefficient vector table that body is sent, or according to S and L, coefficient vector table is calculated according to vandermonde matrix or Cauchy matrix When, after receiving side RLC entity gets coefficient vector table, the coefficient vector table that can be will acquire is stored to memory In, to facilitate subsequent use.
It should be noted that in embodiments of the present invention, the no sequencing of the execution of step 510 and step 511.When So, when the coefficient vector table that the mode that receiving side RLC entity obtains coefficient vector table is reception sending side RLC entity transmission, or Person is according to S and L, when coefficient vector table is calculated according to vandermonde matrix or Cauchy matrix, in order to avoid obtain coefficient to The waste of time caused by scale, reduces time delay of the receiving side RLC entity to sending side RLC Entity feedback state report, it is preferred that Step 511 can be first carried out, then executes step 510, it can gets coefficient vector table in advance, and saves in memory.
512, call number domain and coefficient vector table of the receiving side RLC entity according to the first RLC PDU obtains the first data segment Coefficient vector corresponding to each data segment in set forms coefficient vector set.
Specifically, after receiving side RLC entity receives the first RLC PDU, it can be from the first RLC PDU received It is middle to choose all first RLC PDUs corresponding with the SN of initial data section, and for corresponding with the SN of initial data section all The first RLC PDU of each of first RLC PDU, according to the call number domain of the first RLC PDU and coefficient vector table, obtaining should Coefficient vector corresponding to all data segments in data field that first RLC PDU includes, final obtain includes multiple data segments The first data segment set in each data segment corresponding to coefficient vector, form coefficient vector set, first data segment The number for the data segment for including in set is less than or equal to N；Wherein get coefficient vector collection is combined into sending side RLC entity and obtains Take the set of coefficient vector corresponding to each data segment in the first data segment set.
Specifically, in one possible implementation, for all first RLCs corresponding with the SN of initial data section The first RLC PDU of each of PDU, when only including a call number in the call number domain of the first RLC PDU, i.e. the index Number domain only include in the corresponding coefficient vector of B data segment in the data field of the first RLC PDU the smallest coefficient of call number to Amount, at this point, receiving side RLC entity can sequentially take out B according to the call number for including in call number domain from coefficient vector table Coefficient vector, the B coefficient vector are that sending side RLC entity obtains B number for including in the data field of the first RLC PDU Corresponding coefficient vector when according to section, in this way, coefficient vector set can be obtained.In alternatively possible implementation, For the first RLC PDU of each of all first RLC PDU corresponding with the SN of initial data section, as the first RLC When in the call number domain of PDU including multiple call numbers, i.e., the call number domain includes B number in the data field of the first RLC PDU According to the call number of each coefficient vector in the corresponding coefficient vector of section, at this point, receiving side RLC entity can be according in call number domain The multiple call numbers for including, take out corresponding coefficient vector (can be taken off B coefficient vector altogether) from coefficient vector table, and the B is a Coefficient vector be sending side RLC entity obtain it is corresponding when B data segment for including in the data field of the first RLC PDU Coefficient vector, in this way, coefficient vector set can be obtained.
Preferably, corresponding with the SN of initial data section all are chosen from the first RLC PDU in receiving side RLC entity Before one RLC PDU, receiving side RLC entity RLC PDU corresponding to the initial data section has been finished receiving.Implement in the present invention In a kind of possible implementation of example, when receiving side RLC entity starts original number after reception in the initial data section According to the corresponding RLC PDU of section (showing that receiving side RLC entity RLC PDU corresponding to the initial data section has been finished receiving) When, then execute step 512.
513, receiving side RLC entity is according to coefficient vector set, and whether the rank of matrix that design factor vector set is combined into Equal to S.
Wherein, S is the number of segment that RLC entity in sending side divides the corresponding bit string to be sent of initial data section, and S is positive whole Number.
Wherein, after receiving side RLC entity gets coefficient vector set, judge according to receive and initial data Whether the corresponding all first RLC PDU of SN of section can get the initial data section, can specifically be obtained by calculating To the ranks of matrix of coefficient vector collective combinations whether be equal to S.Since S is that RLC entity in sending side is corresponding to initial data section Bit string to be sent carry out dividing the parameter that uses, therefore receiving side RLC entity can be according to calculated as a result, determining basis Whether all first RLC PDUs corresponding with the SN of initial data section having received are available to be arrived the initial data section.
When the rank of matrix that the coefficient vector collection of calculating is combined into is not equal to S, it is determined that the initial data cannot be obtained Section, and when determination can not obtain initial data section, execute following steps 514- step 520.Alternatively,
When rank of matrix that the coefficient vector collection of calculating is combined into is equal to S, it is determined that according to have received with it is original The corresponding all first RLC PDU of the SN of data segment can obtain the initial data section, then at this time can be according to having received All first RLC PDUs corresponding with the SN of initial data section obtain the initial data section.
For example, the sub- bit string collection to be sent for the initial data section that sending side RLC entity is got is combined into { x1, x2..., xS, corresponding first data of all first RLC PDU corresponding with the SN of initial data section that receiving side RLC entity receives Section collection is combined into { y1, y2..., yN, and receiving side RLC entity is according to all first RLCs corresponding with the SN of initial data section PDU gets sending side RLC entity and obtains y1, y2..., yNWhen, the corresponding call number of the coefficient vector being respectively adopted be 1, 2 ..., N, then receiving side RLC entity can obtain sending side RLC entity according to coefficient vector table obtains y1, y2..., yNWhen Coefficient vector are as follows:
At this point, receiving side RLC entity can use formula
Sub- bit string set to be sent is got, then according to sub- bit string set { x to be sent1, x2..., xSAnd original number According to first acquisition of information of section to corresponding initial data section.
514, receiving side RLC entity sends the state report for carrying initial data section SN to sending side RLC entity.
Wherein, the SN of the initial data section generates the second data segment set for sending side RLC entity, according to the second data Duan Jihe obtains the 2nd RLC PDU, which generated according to initial data section.It is specific:
When receiving side RLC entity is according to coefficient vector set, the rank of matrix that design factor vector set is combined into is not equal to S When, show that initial data section can not be obtained according to the first RLC PDU having received, then receiving side RLC entity can at this time To send the state report for carrying initial data section SN to sending side RLC entity, so that sending side RLC entity is again to receiving side RLC entity sends RLC PDU corresponding with the initial data section.
Preferably, receiving side RLC entity to sending side RLC entity send carry initial data section SN state report it Before, receiving side RLC entity can first obtain the number for retransmitting data segment, and the number of the re-transmission data segment is carried in state report Sending side RLC entity is sent in announcement, the number of the re-transmission data segment determines the second data generated for sending side RLC entity Data segment number in Duan Jihe, wherein the data segment number in the second data segment set is greater than or equal to the re-transmission data segment Number.
Specifically, retransmitting data segment is the data segment that receiving side RLC entity obtains that initial data section also needs.If receiving side It is then to show not equal to S according to the first RLC having received that RLC entity, which calculates the rank of matrix that coefficient vector collection is combined into, PDU can not obtain initial data section, and sending side RLC entity is needed to send and the original number to receiving side RLC entity again According to the corresponding RLC PDU of section, need to carry the data segment that acquisition initial data section also needs again in these RLC PDU sent, Receiving side RLC entity can calculate the number for obtaining the data segment that initial data section also needs, i.e. of re-transmission data segment at this time Number, wherein the number of the re-transmission data segment is equal to the difference of rank of matrix and S that coefficient vector collection is combined into.
For example, in the state report sent to sending side RLC entity when receiving side RLC entity carrying initial data section SN with And when retransmitting data segment number, in embodiments of the present invention, the format of state report can be as shown in figure 15, wherein Number Domain is used to indicate the number for obtaining and retransmitting data segment, and the effect of co-domain is corresponding with the format of state report as shown in Figure 3 The effect in domain is identical, and this is no longer going to repeat them for the embodiment of the present invention.In the embodiment of the present invention it can be seen from Figure 15 and Fig. 3 State report in compared to the prior art in technical report in eliminate be used to indicate need retransmit RLC PDU segmentation The domain SOstart of initial position of the data field in the data field of former complete RLC PDU, is used to indicate the RLC for needing to retransmit End position SOend domain of the data field of PDU segmentation in the data field of former complete RLC PDU, and be used to indicate followed by The no domain E2 there are also a pair of SOstart and SOend, in this way, can be so as to reducing receiving side RLC Entity feedback to a certain extent State report expense.
It should be noted that the form schematic diagram of the state report provided in embodiments of the present invention only illustrates the state It is needed in report comprising which necessary domain, and the length to each domain and without specifically limiting, it is each shown in Figure 15 Length of field is a kind of signal, that is to say, that the type in the domain that the embodiment of the present invention includes to state report at this, and it is each The length in domain is simultaneously not particularly limited, and the length in the type in the domain for including in specific state report and each domain can basis The demand of practical application scene is configured.
515, RLC entity in sending side obtains the coefficient vector table of storage.
Wherein, it when receiving side RLC entity determination can not get initial data section, is sent to sending side RLC entity After the state report (can also be carried in the state report and retransmit data segment number) for carrying initial data section SN, sending side RLC entity can receive the state report of the carrying SN of receiving side RLC entity transmission, and after receiving state report, from The coefficient vector table of storage is obtained in memory.
516, RLC entity in sending side generates the second data segment set of initial data section according to SN.
Wherein, in sending side, RLC entity receives state report, and after getting the coefficient vector table of storage, can be with According to the initial data section SN carried in state report, the second data segment set of initial data section corresponding with the SN is generated.
Preferably, when received state report also carries the number for retransmitting data segment, in sending side, RLC entity is according to SN Before the second data segment set for generating initial data section, sending side RLC entity can also be first according to carrying in state report The data segment number in determining the second data segment set for needing to generate of number of data segment is retransmitted, wherein determining what needs generated The principle of data segment number in second data segment set is: the data segment number in the second data segment set is greater than or equal to weight Pass the number of data segment.
In embodiments of the present invention, in step 516, sending side RLC entity generates the second number of initial data section according to SN According to Duan Jihe, 516a1- step 516a3 specifically may comprise steps of.
516a1, sending side RLC entity read the sub- bit string set to be sent of initial data section according to SN from memory.
Wherein, in sub- bit string set to be sent include S sections of sub- bit strings to be sent, each of S sections of sub- bit strings to be sent to The length for sending sub- bit string is L.Since sending side RLC entity is before transmitting initial data section for the first time, the original has been got The sub- bit string set to be sent of beginning data segment, and in memory by the sub- bit string set storage to be sent of the initial data section, Therefore in sending side RLC entity state report is received, and after getting the coefficient vector table of storage, it can be according to receiving State report in the initial data section SN that carries, the son to be sent of initial data section corresponding with the SN is read from memory Bit string set.
516a2, sending side RLC entity choose being not used for respective numbers according to data segment number from coefficient vector table Coefficient vector.
Wherein, since receiving side RLC entity does not inform which data segment sending side RLC entity is specifically due to transmitting Occur to lose and retransmitted in the process, therefore sending side RLC entity is in the sub- position to be sent for reading initial data section After set of strings, in order to ensure receiving side RLC entity can be according to the second data segment set and the first RLC PDU having received The the first data segment set for including gets the initial data section, it is preferred that sending side RLC entity can be according to determining needs Generate the second data segment set in data segment number, from coefficient vector table choose respective numbers not used coefficient to Amount, specifically, in one possible implementation, the second number that sending side RLC entity can be generated according to determining needs According to section gather in data segment number, the not used coefficient vector of respective numbers is sequentially chosen from coefficient vector table, alternatively, In alternatively possible implementation, the second data segment set that sending side RLC entity can be generated according to determining needs In data segment number, the not used coefficient vector of respective numbers is randomly selected from coefficient vector table.
516a3, sending side RLC entity according to the sub- bit string set to be sent of initial data section and not used coefficient to Amount generates the second data segment set.
Wherein, in sending side RLC entity according to SN, the sub- bit string collection to be sent of initial data section is read from memory It closes, and according to data segment number, chooses from coefficient vector table to after the not used coefficient vector of respective numbers, it can By each coefficient vector in the not used coefficient vector for the respective numbers chosen respectively with sub- bit string set to be sent into Row calculates, and generates the first data segment set, and the length of each data segment in the first data segment set is L.Wherein, specifically Calculation method can be with reference to the specific descriptions of corresponding content in step 505 of the embodiment of the present invention, the embodiment of the present invention is herein not It is described in detail again.
517, RLC entity in sending side obtains second information of initial data section.
Wherein, which includes the call number domain of the 2nd RLC PDU.In sending side, RLC entity generates the second number After gathering according to section, second information of the available initial data section.
Wherein, the position to be sent of initial data section is obtained by the mode one described in step 502 when sending side RLC entity When string, second information for obtaining initial data section specifically may include:
According to the SN of initial data section, first information of the initial data section is read from memory, then will be read To the initial data section first information in include the SN of the initial data section, in the initial data section include except most The length information of each RLC SDU and/or RLC SDU segmentation outside the latter RLC SDU or RLC SDU segmentation and this Second information of the call number domain combination producing of the two RLC PDU initial data section.
Wherein, the call number domain for the 2nd RLC PDU that second information carries specifically may is that when sending side RLC entity According to the data segment number in the second data segment set, the not used coefficient of respective numbers is sequentially chosen from coefficient vector table When vector, the call number domain of the 2nd RLC PDU only includes that A data segment in the data field of the 2nd RLC PDU is corresponding not Lowest index number in the coefficient vector used；Alternatively, working as the second data segment that RLC entity in sending side is generated according to determining needs Data segment number in set, when randomly selecting the not used coefficient vector of respective numbers from coefficient vector table, this second The call number domain of RLC PDU include the 2nd RLC PDU data field in the corresponding each not used coefficient of A data segment to The call number of amount.
Alternatively, when RLC entity in sending side passes through the mode two or the acquisition initial data of mode three described in step 502 When the bit string to be sent of section, second information for obtaining initial data section specifically may include:
Second of the initial data section in the call number domain of SN and twoth RLC PDU of the construction comprising the initial data section Information.
Wherein, the call number domain for the 2nd RLC PDU that second information carries specifically may is that when sending side RLC entity According to the data segment number in the second data segment set, the not used coefficient of respective numbers is sequentially chosen from coefficient vector table When vector, the call number domain of the 2nd RLC PDU only includes that A data segment in the data field of the 2nd RLC PDU is corresponding not Lowest index number in the coefficient vector used；Alternatively, working as the second data segment that RLC entity in sending side is generated according to determining needs Data segment number in set, when randomly selecting the not used coefficient vector of respective numbers from coefficient vector table, this second The call number domain of RLC PDU include the 2nd RLC PDU data field in the corresponding each not used coefficient of A data segment to The call number of amount.
518, RLC entity in sending side obtains the 2nd RLC PDU according to the second data segment set.
Wherein, in sending side, RLC entity gets the second data segment set, and gets second letter of initial data section It, can be according to the second data segment set of generation and second the 2nd RLC of acquisition of information of initial data section after breath PDU.In embodiments of the present invention, RLC entity in sending side obtains the 2nd RLC PDU according to the second data segment set, specifically may be used To include the following steps 518a1- step 518a2.
518a1, sending side RLC entity choose A according to the size of current transmittable data from the second data segment set Data segment constitutes the data field of the 2nd RLC PDU.
Wherein, A is the positive integer less than or equal to the data segment number in the second data segment set；In sending side, RLC is real After body gets the second data segment set, the size for the current transmittable data that can be notified according to sending side MAC entity, from The data field that A data segment constitutes the 2nd RLC PDU is chosen in second data segment set, wherein length, the original of A data segment The total length of second information of beginning data segment is less than or equal to the size of current transmittable data.
518a2, sending side RLC entity are by second information of initial data section and the data field group of the 2nd RLC PDU Symphysis is at the 2nd RLC PDU.
Wherein, after in sending side, RLC entity gets the data field of the 2nd RLC PDU, the 2nd RLC that will acquire The data field of PDU and second the 2nd RLC PDU of information combination producing of initial data section.
It should be noted that RLC entity in sending side is by the data field and original number of the 2nd RLC PDU in the embodiment of the present invention It can be with reference to right in step 508 in the embodiment of the present invention according to the format of the 2nd RLC PDU of second information combination producing of section The corresponding description of content is answered, in this not go into detail for the embodiment of the present invention.
519, the 2nd RLC PDU is sent to receiving side RLC entity by sending side RLC entity.
Wherein, after sending side RLC entity generates the 2nd RLC PDU, the 2nd RLC PDU can be sent to reception Side RLC entity.
It should be noted that sending side RLC entity is after generating the second data segment set, if receiving sending side MAC The size of the current transmittable data of layer entity notice, then can be according to the 2nd RLC of acquiring size of current transmittable data PDU, but sending side RLC entity is wrapped in the data field of the 2nd RLC PDU got according to the size of current transmittable data The number of the data segment contained is likely to be less than re-transmission data segment number, therefore receiving side RLC entity needs are receiving hair again Send that side MAC layer entity notifies it is current data segment size and then secondary execution step 518 can be transmitted, until by the second data segment Data segment in set is all transmitted to receiving side RLC entity.
520, receiving side RLC entity obtains initial data section according to the first RLC PDU and the 2nd RLC PDU.
Wherein, after in sending side, the 2nd RLC PDU is sent to receiving side RLC entity by RLC entity, receiving side RLC is real Body can receive the 2nd RLC PDU of sending side RLC entity transmission, and can be according to the first RLC PDU and the 2nd RLC PDU solves initial data section.
It should be noted that receiving side RLC entity can be sent receiving sending side RLC entity in embodiments of the present invention The first RLC PDU (or the 2nd RLC PDU) during, using the side Gaussian elimination method (Gaussian Elimination) Side operation is received, so as to quickly according to all RLC PDU having received (comprising the first RLC PDU and the 2nd RLC PDU initial data section) is got, alternatively, enough RLC PDU can also received (for example, receiving side RLC entity calculates Obtain the rank of matrix that coefficient vector collection is combined into and be equal to S, then show to receive enough RLC PDU) and then progress operation To get initial data section, the embodiment of the present invention is at this to receiving side RLC entity according to the first RLC PDU and second RLC PDU obtains the process of initial data section and is not particularly limited.
The embodiment of the present invention herein with " receiving side RLC entity after receiving the first RLC PDU and the 2nd RLC PDU, Carry out operation again to get initial data section " for introduce the process for obtaining initial data section, it is as described below:
For example, the sub- bit string collection to be sent for the initial data section that sending side RLC entity is got is combined into { x1, x2, x3, x4, The data segment that all first RLC PDUs corresponding with the SN of initial data section that receiving side RLC entity has received are carried be y1, Y2, y4, (weight is calculated in receiving side RLC entity to the 2nd RLC PDU that receiving side RLC entity receives in the step 514 The number for passing data segment is 1, and corresponding data segment is carried and is sent in a 2nd RLC PDU by sending side RLC entity Receiving side RLC entity) in include data segment be y5, and receiving side RLC entity can be according to the first RLC PDU and second RLC PDU, when getting sending side RLC entity acquisition y1, y2, y4, y5, the corresponding call number of the coefficient vector being respectively adopted is 1,2,4,5, then when receiving side RLC entity can obtain sending side RLC entity acquisition y1, y2, y4, y5 according to coefficient vector table Coefficient vector are as follows:
At this point, receiving side RLC entity can use formula
Get sub- bit string set { x to be sent1, x2, x3, x4, then according to sub- bit string set to be sent and initial data First information of section and second acquisition of information of initial data section are to corresponding initial data section.
Wherein, in the first possible implementation, when sending side, RLC entity passes through the mode described in step 502 When the bit string to be sent of one acquisition initial data section, receiving side RLC entity is according to sub- bit string set to be sent and initial data section First information；It further, can be with according to the specific of the corresponding initial data section of the second of initial data section acquisition of information Are as follows:
According in the initial data section for including in the first of initial data section information, second information of initial data section The each RLC SDU in addition to the last one RLC SDU or RLC SDU segmentation for including and/or the length letter of RLC SDU segmentation Breath, can recover initial data section.
In the second possible implementation, when sending side RLC entity is obtained by the mode two described in step 502 When the bit string to be sent of initial data section, receiving side RLC entity is according to the first of sub- bit string set to be sent and initial data section Second corresponding initial data section of acquisition of information of head information and initial data section is specifically as follows:
Receiving side RLC entity recovers the corresponding bit string to be sent of initial data section according to sub- bit string set to be sent, so Isolating the bit string that internal layer head information and length are X from the bit string to be sent afterwards, (wherein, internal layer head information and length are X The total length of the bit string of position is S*L), in this way, can be recovered according to the bit string that the internal layer head information and length are X original Data segment.
In the third possible implementation, when sending side RLC entity is obtained by the mode three described in step 502 When the bit string to be sent of initial data section, receiving side RLC entity is according to the first of sub- bit string set to be sent and initial data section Second corresponding initial data section of acquisition of information of head information and initial data section is specifically as follows:
Receiving side RLC entity recovers the corresponding bit string to be sent of initial data section according to sub- bit string set to be sent, so The delimiter in the bit string to be sent is scanned afterwards, initial data section can be recovered by delimiter, for example, delimiter is " 10000001 ", when " 10000001 " are arrived in the scanning of receiving side RLC entity, it is determined that it is herein the boundary of two RLC SDU, this Sample can be distinguished each RLC SDU by the delimiter, then execute one it is reversed go to " 1 " to operate, whenever discovery RLC Continuous 5 " 0 " are contained in SDU just to remove " 1 " of back, can be obtained by original RLC SDU in this way, it can extensive Initial data of appearing again section.
It should be noted that in embodiments of the present invention in a kind of preferably achievable mode, the coefficient vector table In include M coefficient vector in appoint that take S coefficient vector be linear independence, and work as the M for including in coefficient vector table In a coefficient vector appoint take S coefficient vector be linear independence when, when receiving side RLC entity is got and initial data section The corresponding first RLC PDU of SN after, judge whether available to the initial data section according to the first RLC PDU has been received The specific can be that determining whether the number of the corresponding coefficient vector set of the first RLC PDU is equal to S and (can not have at this time Calculate whether the rank of matrix that the corresponding coefficient vector collection of the first RLC PDU is combined into is equal to S), if the first RLC PDU is corresponding The number of coefficient vector set be not equal to S, then show itself according to the institute corresponding with the SN of initial data section that has received There is the first RLC PDU that cannot get the initial data section, if the number etc. of the corresponding coefficient vector set of the first RLC PDU In S, then show that itself can get this according to all first RLC PDUs corresponding with the SN of initial data section having received Initial data section.Certainly, any S coefficient vector can not also in M coefficient vector for including in the coefficient vector table It is linear independence.
It should be noted that in embodiments of the present invention, the receiving side can be UE, sending side can be base station, And the UE can be a kind of special equipment, i.e. the RLC entity of the UE can only be using the radio chains provided in the embodiment of the present invention Road controls transmission method, and when which is also possible to encounter certain special application scenarios, the RLC entity that base station configures the UE is used The wireless link control transmission method provided in the embodiment of the present invention, specific configuration method can be base station to UE transmission and include The information of relevant parameter, the RLC entity which may include base station draw the corresponding bit string to be sent of initial data section Number of segment S, the length L of each sub- bit string to be sent divided, or can also include the coefficient vector for including in coefficient vector table Number M and the digit of each coefficient vector etc..Also, when each RLC entity is to use in the embodiment of the present invention to provide Wireless link control transmission method, and when relevant parameter is identical, base station can in public message by relevant parameter notify to UE；When the relevant parameter difference of each RLC entity, base station can be carried relevant parameter in RRC reallocation message or MAC It notifies in CE to UE.
Wireless link control transmission method provided in an embodiment of the present invention, sending side RLC entity are sent out to receiving side RLC entity The first RLC PDU for sending the first data segment set including generating according to initial data section is receiving receiving side RLC entity hair After the state report of the carrying initial data section SN sent, the second data segment collection of the initial data section is generated according to the SN It closes, and the 2nd RLC PDU is obtained according to the second data segment set, and be sent to receiving side RLC entity, so that receiving side RLC is real Body obtains initial data section according to the first RLC PDU and the 2nd RLC PDU, can not obtain in receiving side RLC entity determination in this way When getting some initial data section, by sending state report only comprising initial data section SN, drop to sending side RLC entity The low expense to sending side RLC Entity feedback state report.
In embodiments of the present invention, a kind of wireless link control transmission method is also provided, main process may is that reception To sending side RLC entity status report, which is used to indicate sending side RLC entity and stops to connecing side RLC entity It receives side RLC entity and sends the corresponding RLC PDU of initial data section.It wherein, include the SN of initial data section in the state report.
Specifically, when receiving side RLC entity is determined to get some initial data section, to sending side RLC entity Transmission is used to indicate sending side RLC entity and stops the shape for sending the corresponding RLC PDU of the initial data section to receiving side RLC entity State report, wherein in the state report include initial data section SN, so as to sending side RLC entity stop to itself send with The corresponding RLC PDU of the SN of the initial data section, such receiving side RLC entity to sending side RLC entity by sending for referring to Show that sending side RLC entity stops sending the corresponding RLC PDU of initial data section to receiving side RLC entity, only includes original number According to the state report of the SN of section, the expense to sending side RLC Entity feedback state report is equally also reduced.
Sending side RLC entity is used to indicate to the transmission of sending side RLC entity by receiving side RLC entity to stop to receiving side RLC entity sends the corresponding RLC PDU's of initial data section, and only the state report of the SN comprising initial data section, reduces to hair Send the specific implementation process of the expense of side RLC Entity feedback state report can be with are as follows:
The sub- bit string set to be sent of sending side RLC entity acquisition initial data section.
The head information of sending side RLC entity acquisition initial data section.
Sending side RLC entity obtains data segment set according to nonlinear operation table and sub- bit string set to be sent.
It wherein, include N number of nonlinear operation in nonlinear operation table, each nonlinear operation in N number of nonlinear operation A corresponding call number；It include C data segment in data segment set, C is the positive integer less than or equal to N.
It should be noted that the nonlinear operation table can be pre-stored in the memory of sending side, be also possible to from It receives, is can also be according to S and L precalculate to obtain and saves at receiving side RLC entity, the nonlinear operation table Specific acquisition modes can be chosen according to the demand of practical application scene, and the embodiment of the present invention is at this to not doing specific limit System.
Sending side RLC entity is chosen D data segment from data segment set and is constituted according to the size of current transmittable data The data field of RLC PDU.Wherein, D is the positive integer less than or equal to C.
Sending side RLC entity is by the head information combination producing RLC PDU of data field and call number domain and initial data section.
RLC PDU is sent to receiving side RLC entity by sending side RLC entity.
Wherein, sending side RLC entity, can be always before the state report for not receiving the transmission of receiving side RLC entity The corresponding RLC PDU of the initial data section is sent to receiving side RLC entity.
Receiving side RLC entity receives the RLC PDU that RLC entity in sending side is sent.
Receiving side RLC entity chooses all RLC PDU corresponding with SN from RLC PDU, forms RLC PDU set.
Receiving side RLC entity is according to the index of each RLC PDU in all RLC PDU for including in RLC PDU set Number domain and nonlinear operation table, obtaining sending side RLC entity, to obtain all data segments for including in the data field of RLC PDU corresponding Nonlinear operation, obtain nonlinear operation set.
Receiving side RLC entity is according to every in all RLC PDU for including in nonlinear operation set and RLC PDU set All data segments for including in the data field of a RLC PDU judge whether that initial data section can be got.
Wherein, after receiving side RLC entity gets RLC PDU set corresponding with initial data section, attempting basis should RLC PDU set goes to restore the initial data section.
If receiving side RLC entity can get initial data section, to sending side RLC entity status report.
Wherein, state report be used to indicate sending side RLC entity stop to receiving side RLC entity send initial data section it is right The RLC PDU answered includes the sequence number SN of initial data section in state report.
It wherein, can be to if receiving side RLC entity can recover the initial data section according to the RLC PDU set Sending side RLC entity transmission be used to indicate sending side RLC entity stop to receiving side RLC entity send initial data section it is corresponding The state report of RLC PDU, and the initial data section can be recovered according to the RLC PDU set.
Sending side RLC entity stops the RLC that initial data section corresponding with the SN is sent to receiving side RLC entity PDU。
Another embodiment of the present invention provides a kind of sending side wireless spread-spectrum technology RLC entities, as shown in figure 16, the sending side Wireless spread-spectrum technology RLC entity may include: transmitter 601, receiver 602, processor 603.
Transmitter 601, for sending the first rlc protocol data cell PDU, the first RLC to receiving side RLC entity PDU includes the first data segment set generated according to initial data section, and the first data segment set includes multiple data segments, institute Stating the first RLC PDU includes the initial data section sequence number SN.
Receiver 602, for receiving the state report for the carrying SN that the receiving side RLC entity is sent, the shape State report is sent after the receiving side RLC entity determination cannot obtain the initial data section.
Processor 603, the SN for being obtained according to the receiver 602 generate the second number of the initial data section The 2nd RLC PDU is obtained according to Duan Jihe, and according to the second data segment set of the generation.
The transmitter 601, the 2nd RLC PDU that can be also used for obtaining the processor 603 are sent to institute Receiving side RLC entity is stated, so that the receiving side RLC entity is obtained according to the first RLC PDU and the 2nd RLC PDU The initial data section.
Further alternative, the received state report of receiver 602 also carries the number for retransmitting data segment.
The processor 603 can be also used in the second data segment collection for generating the initial data section according to the SN Before conjunction, the second data segment collection of the generation is determined according to the received number for retransmitting data segment of the receiver 602 Data segment number in conjunction, wherein the data segment number in the second data segment set is greater than or equal to the re-transmission data The number of section.
Further alternative, the processor 603 can be also used for sending out in the transmitter 601 to receiving side RLC entity Before sending the first RLC PDU, the first data segment set of the initial data section is generated, and according to the generation First data segment set obtains the first RLC PDU.
Further alternative, the sending side wireless spread-spectrum technology RLC entity can also include: memory 604.
The processor 603 can be also used for before the first data segment set for generating the initial data section, Obtain coefficient vector table；Include M coefficient vector in the coefficient vector table, each coefficient in the M coefficient vector to A corresponding call number is measured, the M is positive integer.
Memory 604, for storing the coefficient vector table of the acquisition.
The processor 603 specifically can be used for:
Obtain the sub- bit string set to be sent of the initial data section, the sub- bit string set to be sent of the initial data section In include S section sub- bit strings to be sent, the length of each of described S sections of sub- bit string to be sent sub- bit string to be sent is L, described The S and L is positive integer.
The sub- bit string set to be sent of the initial data section is stored into memory 604.
N number of coefficient vector is chosen from the coefficient vector table that the memory 604 stores；The N is to be greater than or wait In the S, and it is less than or equal to the positive integer of the M.
According to the sub- bit string set to be sent of the initial data section of the storage and the coefficient of the selection to Amount generates the first data segment set；It include N number of data segment in the first data segment set.
Further alternative, the processor 603 can be also used for obtaining institute according to the first data segment set of generation Before stating the first RLC PDU, first information of the initial data section is obtained, first information carries described first The call number domain of RLC PDU.
The processor 603, specifically can be used for:
According to the size of current transmittable data, B data segment structure is chosen from the first data segment set of the generation At the data field of the first RLC PDU；The B is the positive integer less than or equal to the N.
It combines the data field of first information of the initial data section of the acquisition and the first RLC PDU Generate the first RLC PDU.
Further alternative, the processor 603 specifically can be used for:
Obtain the bit string to be sent of the initial data section；The length of the bit string to be sent is S*L.
By the bit string to be sent of the acquisition divided to obtain comprising described in described S sections sub- bit string to be sent to Send sub- bit string set.
Further alternative, the processor 603 specifically can be used for:
According to RLC Service Data Unit SDU pre-stored in memory 604 set in RLC SDU caching sequence, from The bit string that intercepted length is S*L in the RLC SDU set, the bit string for being S*L using the length is as the original number According to the bit string to be sent of section.
Further alternative, the processor 603 specifically can be used for:
According to the caching sequence of RLC SDU in RLC SDU pre-stored in memory 604 set, from the RLC SDU The bit string that intercepted length is X in set；The length is that X bit strings are the initial data section.
Internal layer head information is obtained according to the bit string that the length is X, wherein comprising except last in the internal layer head information One RLC SDU perhaps RLC SDU segmentation outside each RLC SDU and/or RLC SDU segmentation length information or described Include the boundary demarcation information between all RLC SDU and/or RLC SDU segmentation in internal layer head information.
The length is formed to the bit string to be sent of the initial data section for X bit strings and the internal layer head information.
Further alternative, the processor 603 can be also used in the bit string to be sent for obtaining the initial data section Before, the every two RLC SDU boundary addition delimiter in the memory 604 in pre-stored RLC SDU set obtains New RLC SDU set.
The processor 603, specifically can be used for according in the obtained new RLC SDU set RLC SDU it is slow Sequence is deposited, the bit string that intercepted length is S*L from the new RLC SDU set, the length is that S*L bit strings are institute State the bit string to be sent of initial data section, the bit string in the bit string that the length is S*L in addition to the delimiter is described Initial data section.
Further alternative, the processor 603 specifically can be used for the coefficient stored from the memory 604 N number of coefficient vector is sequentially chosen in vector table.
The call number domain for the first RLC PDU that the processor 603 obtains only includes the number of the first RLC PDU According to the smallest coefficient vector of call number in the coefficient vector of the corresponding selection of the B data segment in domain.
Further alternative, the processor 603 specifically can be used for the coefficient stored from the memory 604 N number of coefficient vector is randomly selected in vector table.
It include the number of the first RLC PDU in the call number domain for the first RLC PDU that the processor 603 obtains According to the call number of each coefficient vector in the coefficient vector of the corresponding selection of the B data segment in domain.
Further alternative, the processor 603 specifically can be used for constructing first letter of the initial data section Breath.
The memory 604 can be also used for first that stores the initial data section that the processor 603 obtains Information.
Wherein, it is removed in first information of the initial data section comprising include in the SN, the initial data section Length information and the institute of each RLC SDU and/or RLC SDU segmentation outside the last one RLC SDU or RLC SDU segmentation State the call number domain of the first RLC PDU.
Further alternative, the processor 603 specifically can be used for constructing comprising the SN and the first RLC First information of the initial data section in the call number domain of PDU.
Further alternative, the processor 603 can be also used for generating the initial data section according to the SN Before second data segment set, the coefficient vector table is obtained from the memory 604.
The processor 603 specifically can be used for according to the received SN of the receiver 602, from the memory The sub- bit string set to be sent of the initial data section is read in 604；According to the data segment number, described in the acquisition The not used coefficient vector of respective numbers is chosen in coefficient vector table；According to the sub- bit string collection to be sent of the initial data section The not used coefficient vector with the selection is closed, the second data segment set is generated.
Further alternative, the processor 603 can be also used for obtaining second according to the second data segment set Before RLC PDU, second information of the initial data section is obtained, second information includes the 2nd RLC PDU Call number domain.
The processor 603 specifically can be used for the size according to current transmittable data, from the second data segment collection The data field that A data segment constitutes the 2nd RLC PDU is chosen in conjunction；The A is less than or equal to second data segment The positive integer of data segment number in set；By second information of the initial data section of the acquisition and described obtain The 2nd RLC PDU data field combination producing described in the 2nd RLC PDU.
Further alternative, the processor 603 specifically can be used for according to the data in the second data segment set Section number, sequentially chooses the not used coefficient vector of respective numbers from the coefficient vector table.
The call number domain for the 2nd RLC PDU that the processor 603 obtains only includes the number of the 2nd RLC PDU According to lowest index number in the corresponding not used coefficient vector of the A data segment in domain.
Further alternative, the processor 603 specifically can be used for according to the data in the second data segment set Section number, randomly selects the not used coefficient vector of respective numbers from the coefficient vector table.
It wherein, include the 2nd RLC in the call number domain for the 2nd RLC PDU that the processor 603 obtains The call number of the corresponding each not used coefficient vector of the A data segment in the data field of PDU.
Further alternative, the processor 603 specifically can be used for the second data segment collection according to the selection A data segment in conjunction randomly selects the A not used coefficient vectors from the coefficient vector table.
It wherein, include the 2nd RLC in the call number domain for the 2nd RLC PDU that the processor 603 obtains The call number of the corresponding each not used coefficient vector of the A data segment in the data field of PDU.
Further alternative, the processor 603 can also specifically can be used for according to the SN, from the memory First information of the initial data section, and the institute that will include in first information of the initial data section are read in 604 State SN, the initial data section first information in include the initial data section in include except the last one RLC The length information and the 2nd RLC of each RLC SDU and/or RLC SDU segmentation outside SDU RLC SDU segmentation Second information of initial data section described in the call number domain combination producing of PDU.
Further alternative, the processor 603 can also specifically can be used for constructing comprising the SN and described the Second information of the initial data section in the call number domain of two RLC PDU.
Further alternative, the tool of processor 603 can be used for body:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the receiving side RLC entity is sent；The coefficient vector table is the receiving side The RLC entity S and L based on the received, is calculated according to vandermonde matrix or Cauchy matrix；Alternatively,
According to the S and the L, according to the vandermonde matrix or the Cauchy matrix be calculated the coefficient to Scale.
It should be noted that the specific descriptions of functional module can be in RLC entity in sending side provided in an embodiment of the present invention With reference to the specific descriptions of corresponding content in embodiment of the method, in this not go into detail for the embodiment of the present invention.
RLC entity in sending side provided in an embodiment of the present invention includes according to initial data section to the transmission of receiving side RLC entity First RLC PDU of the first data segment set generated is receiving the carrying of the receiving side RLC entity transmission initial data section After the state report of SN, the second data segment set of the initial data section is generated according to the SN, and according to the second data segment collection It closes and obtains the 2nd RLC PDU, and be sent to receiving side RLC entity, so that receiving side RLC entity is according to the first RLC PDU and the Two RLC PDU obtain initial data section, in this way when receiving side RLC entity determination can not get some initial data section, By sending state report only comprising initial data section SN to sending side RLC entity, reduce anti-to sending side RLC entity Present the expense of state report.
Another embodiment of the present invention provides a kind of receiving side RLC entities, as shown in figure 17, the receiving side wireless spread-spectrum technology RLC entity may include: receiver 701, transmitter 702, processor 703.
Receiver 701 can be used for receiving the first rlc protocol data cell PDU of sending side RLC entity transmission, described First RLC PDU includes the first data segment set generated according to initial data section, and the first data segment set includes multiple Data segment, the first RLC PDU include the initial data section sequence number SN.
Transmitter 702 can be used for when determination cannot obtain the initial data section, the sending side Xiang Suoshu RLC entity Send the state report for carrying the SN；Wherein, the SN generates the second data segment set for the sending side RLC entity, The 2nd RLC PDU is obtained according to the second data segment set, the second data segment set is according to the initial data section It generates.
The receiver 701 can be also used for receiving the 2nd RLC PDU that the sending side RLC entity is sent.
Processor 703 can be used for according to the received first RLC PDU and the 2nd RLC of the receiver 701 PDU obtains the initial data section.
Further alternative, the processor 703 can be also used for obtaining the number for retransmitting data segment.
The state report that the transmitter 702 is sent also carries the re-transmission data segment that the processor 703 obtains Number, the number for retransmitting data segment determine in the second data segment set generated for the sending side RLC entity Data segment number, wherein data segment number in the second data segment set is greater than or equal to the data segment that retransmits Number.
Further alternative, the processor 703 can be also used for obtaining coefficient vector table；Wherein, the coefficient vector It include M coefficient vector in table, the corresponding call number of each coefficient vector in the M coefficient vector；The M is positive whole Number；And according to the coefficient vector table in the call number domain of the first RLC PDU and the acquisition, first data are obtained Coefficient vector corresponding to each data segment in Duan Jihe forms coefficient vector set；According to the coefficient vector set, meter Calculate whether the rank of matrix that the coefficient vector collection is combined into is equal to S, the S is that the sending side RLC entity will be described original The number of segment that the corresponding bit string to be sent of data segment divides, the S are positive integer；It is combined into when the coefficient vector collection of calculating When rank of matrix is not equal to S, it is determined that the initial data section cannot be obtained；Or when the coefficient vector collection calculated is combined At rank of matrix be equal to S when, it is determined that the initial data section can be obtained.
Further alternative, the processor 703 specifically can be used for:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the sending side RLC entity is sent；The coefficient vector table is the sending side RLC entity is calculated according to the S and L according to vandermonde matrix or Cauchy matrix；The S and L is for described Sending side RLC entity obtains the corresponding bit string to be sent of the initial data section, and L is positive integer；Alternatively,
The S and L based on the received is calculated described according to the vandermonde matrix or the Cauchy matrix Coefficient vector table.
It should be noted that the specific descriptions of functional module can be in receiving side RLC entity provided in an embodiment of the present invention With reference to the specific descriptions of corresponding content in embodiment of the method, in this not go into detail for the embodiment of the present invention.
Receiving side RLC entity provided in an embodiment of the present invention includes according to original receive the transmission of sending side RLC entity After first RLC PDU of the first data segment set that beginning data segment generates, when determination can not get the initial data section When, state report only comprising initial data section SN is sent to sending side RLC entity, so that sending side RLC entity is according to shape The SN for including in state report obtains the 2nd RLC PDU, and is sent to receiving side RLC entity, and receiving side RLC entity can root Initial data section is obtained according to the first RLC PDU and the 2nd RLC PDU, can not be got in receiving side RLC entity determination in this way When some initial data section, by sending state report only comprising initial data section SN to sending side RLC entity, reduce To the expense of sending side RLC Entity feedback state report.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description It is convenienct and succinct, only the example of the division of the above functional modules, in practical application, can according to need and will be upper It states function distribution to be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, to complete All or part of function described above.The specific work process of the device of foregoing description can be implemented with reference to preceding method Corresponding process in example, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the module or unit It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components It may be combined or can be integrated into another device, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown can be a physical unit or multiple physical units, it can and it is in one place, or may be distributed over Multiple and different places.Some or all of unit therein can be selected to realize this embodiment scheme according to the actual needs Purpose.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a read/write memory medium.Based on this understanding, technical solution of the present invention is substantially in other words The all or part of the part that contributes to existing technology or the technical solution can embody in the form of software products Come, which is stored in a storage medium, including some instructions are used so that equipment (it can be single-chip microcontroller, Chip etc.) or processor (processor) perform all or part of the steps of the method described in the various embodiments of the present invention.And it is aforementioned Storage medium include: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory The various media that can store program code such as (RAM, Random Access Memory), magnetic or disk.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (72)

1. a kind of sending side wireless spread-spectrum technology RLC entity characterized by comprising
Transmission unit, for sending the first rlc protocol data cell PDU, the first RLC PDU packet to receiving side RLC entity The the first data segment set generated according to initial data section is included, the first data segment set includes multiple data segments, and described the One RLC PDU includes the initial data section sequence number SN；
Receiving unit, for receiving the state report for the carrying SN that the receiving side RLC entity is sent, the state report It is to be sent after the receiving side RLC entity determination cannot obtain the initial data section；
Data segment set generation unit, the SN for being obtained according to the receiving unit generate the of the initial data section Two data segment set；
RLC PDU acquiring unit, the second data segment set for being generated according to the data segment set generation unit obtain Take the 2nd RLC PDU；
The transmission unit is also used to for the 2nd RLC PDU that the RLC PDU acquiring unit obtains to be sent to described connect Side RLC entity is received, so that the receiving side RLC entity is according to the first RLC PDU and the 2nd RLC PDU acquisition Initial data section.
2. RLC entity in sending side according to claim 1, which is characterized in that the received state of receiving unit Report also carries the number for retransmitting data segment；
The sending side RLC entity further include:
Determination unit, for generating the second number of the initial data section according to the SN in the data segment set generation unit Before gathering according to section, the second data of the generation are determined according to the received number for retransmitting data segment of the receiving unit Data segment number in Duan Jihe, wherein the data segment number in the second data segment set is greater than or equal to the re-transmission The number of data segment.
3. RLC entity in sending side according to claim 2, which is characterized in that
The data segment set generation unit is also used to send the first RLC PDU to receiving side RLC entity in the transmission unit Before, the first data segment set of the initial data section is generated；
The RLC PDU acquiring unit is also used to first data segment generated according to the data segment set generation unit Set obtains the first RLC PDU.
4. RLC entity in sending side according to claim 3, which is characterized in that the sending side RLC entity further include:
Vector table acquiring unit, for generating first number of the initial data section in the data segment set generation unit Before gathering according to section, coefficient vector table is obtained；It include M coefficient vector in the coefficient vector table, in the M coefficient vector The corresponding call number of each coefficient vector, the M is positive integer；
Storage unit, the coefficient vector table obtained for storing the vector table acquiring unit；
The data segment set generation unit is specifically used for:
The sub- bit string set to be sent of the initial data section is obtained, is wrapped in the sub- bit string set to be sent of the initial data section Containing S sections of sub- bit strings to be sent, the length of each of described S sections of sub- bit string to be sent sub- bit string to be sent is L, the S with The L is positive integer；
The sub- bit string set to be sent of the initial data section is stored into memory；
N number of coefficient vector is chosen from the coefficient vector table that the storage unit stores；The N is more than or equal to described S, and it is less than or equal to the positive integer of the M；
It is raw according to the coefficient vector of the sub- bit string set to be sent of the initial data section of the storage and the selection At the first data segment set；It include N number of data segment in the first data segment set.
5. RLC entity in sending side according to claim 4, which is characterized in that the sending side RLC entity further include:
Head information acquisition unit, for what is generated in the RLC PDU acquiring unit according to the data segment set generation unit Before first data segment set obtains the first RLC PDU, first information of the initial data section is obtained, described first Head information carries the call number domain of the first RLC PDU；
The RLC PDU acquiring unit, is specifically used for:
According to the size of current transmittable data, B data segment is chosen from the first data segment set of the generation and constitutes institute State the data field of the first RLC PDU；The B is the positive integer less than or equal to the N；
First information of the initial data section that the head information acquisition unit is obtained and the first RLC PDU First RLC PDU described in data field combination producing.
6. RLC entity in sending side according to claim 5, which is characterized in that the data segment set generation unit, packet It includes:
Acquisition submodule, for obtaining the bit string to be sent of the initial data section；The length of the bit string to be sent is S*L Position；
Submodule is divided, the bit string to be sent for obtaining the acquisition submodule is divided to obtain comprising the S The sub- bit string set to be sent of section sub- bit string to be sent.
7. RLC entity in sending side according to claim 6, which is characterized in that the acquisition submodule is specifically used for:
According to the caching sequence of RLC SDU in RLC Service Data Unit SDU pre-stored in memory set, from the RLC In SDU set intercepted length is S*L bit strings, using the length for S*L bit string as the initial data section to Send bit string.
8. RLC entity in sending side according to claim 6, which is characterized in that the acquisition submodule is specifically used for:
According to the caching sequence of RLC SDU in RLC SDU pre-stored in memory set, from RLC SDU set The bit string that intercepted length is X；The length is that X bit strings are the initial data section；
Internal layer head information is obtained according to the bit string that the length is X, wherein comprising removing the last one in the internal layer head information RLC SDU perhaps RLC SDU segmentation outside each RLC SDU and/or RLC SDU segmentation length information or the internal layer Include the boundary demarcation information between all RLC SDU and/or RLC SDU segmentation in head information；
The length is formed to the bit string to be sent of the initial data section for X bit strings and the internal layer head information.
9. RLC entity in sending side according to claim 6, which is characterized in that the data segment set generation unit is also wrapped It includes:
Submodule is added, for storing before the bit string to be sent that the acquisition submodule obtains the initial data section Every two RLC SDU boundary addition delimiter in device in pre-stored RLC SDU set obtains new RLC SDU collection It closes；
The acquisition submodule, specifically for adding RLC in the new RLC SDU set that submodule obtains according to described The caching sequence of SDU, the bit string that intercepted length is S*L from the new RLC SDU set, the length is S*L Bit string is the bit string to be sent of the initial data section, and the length is the position in S*L bit strings in addition to the delimiter String is the initial data section.
10. RLC entity in sending side according to claim 5, which is characterized in that
The data segment set generation unit, specifically for sequentially being selected from the coefficient vector table that the storage unit stores Take N number of coefficient vector；
The call number domain for the first RLC PDU that the head information acquisition unit obtains only includes the first RLC PDU The smallest coefficient vector of call number in the coefficient vector of the corresponding selection of the B data segment in data field.
11. RLC entity in sending side according to claim 5, which is characterized in that
The data segment set generation unit, specifically for being selected at random from the coefficient vector table that the storage unit stores Take N number of coefficient vector；
Comprising the first RLC PDU in the call number domain for the first RLC PDU that the head information acquisition unit obtains The call number of each coefficient vector in the coefficient vector of the corresponding selection of the B data segment in data field.
12. RLC entity in sending side according to claim 7, which is characterized in that
The head information acquisition unit, specifically for constructing first information of the initial data section；
The storage unit is also used to deposit first information of the initial data section that the head information acquisition unit obtains Storage is into the memory；
Wherein, comprising including except last in the SN, the initial data section in first information of the initial data section The length information of each RLC SDU and/or RLC SDU segmentation outside one RLC SDU or RLC SDU segmentation and described the The call number domain of one RLC PDU.
13. sending side RLC entity according to claim 8 or claim 9, which is characterized in that
The head information acquisition unit, specifically for constructing the call number domain comprising the SN and the first RLC PDU First information of the initial data section.
14. RLC entity in sending side according to claim 5, which is characterized in that
The vector table acquiring unit is also used to generate the original number according to the SN in the data segment set generation unit Before the second data segment set of section, the coefficient vector table is obtained from the storage unit；
The data segment set generation unit is specifically used for according to the received SN of the receiving unit, from the memory The middle sub- bit string set to be sent for reading the initial data section；According to the data segment number, obtained from the vector table single The not used coefficient vector of respective numbers is chosen in the coefficient vector table that member obtains；According to the initial data section to The not used coefficient vector of sub- bit string set and the selection is sent, the second data segment set is generated.
15. RLC entity in sending side according to claim 14, which is characterized in that
The head information acquisition unit is also used to be obtained in the RLC PDU acquiring unit according to the second data segment set Before 2nd RLC PDU, second information of the initial data section is obtained, second information includes the 2nd RLC The call number domain of PDU；
The RLC PDU acquiring unit, specifically for the size according to current transmittable data, from the second data segment set The middle data field chosen A data segment and constitute the 2nd RLC PDU；The A is less than or equal to the second data segment collection The positive integer of data segment number in conjunction；Second information of the initial data section that the head information acquisition unit is obtained And the 2nd RLC PDU described in the data field combination producing of obtained the 2nd RLC PDU.
16. RLC entity in sending side according to claim 15, which is characterized in that
The data segment set generation unit, specifically for according to the data segment number in the second data segment set, from institute State the not used coefficient vector that respective numbers are sequentially chosen in coefficient vector table；
The call number domain for the 2nd RLC PDU that the head information acquisition unit obtains only includes the 2nd RLC PDU Lowest index number in the corresponding not used coefficient vector of the A data segment in data field.
17. RLC entity in sending side according to claim 15, which is characterized in that
The data segment set generation unit, specifically for according to the data segment number in the second data segment set, from institute State the not used coefficient vector that respective numbers are randomly selected in coefficient vector table；
It wherein, include the 2nd RLC in the call number domain for the 2nd RLC PDU that the head information acquisition unit obtains The call number of the corresponding each not used coefficient vector of the A data segment in the data field of PDU.
18. RLC entity in sending side according to claim 15, which is characterized in that
The head information acquisition unit is specifically used for reading the initial data section from the memory according to the SN First information, and by the first of the SN, the initial data section that include in first information of the initial data section Head information in include the initial data section in include except the last one RLC SDU or RLC SDU segmentation in addition to each of Original described in the length information of RLC SDU and/or RLC SDU segmentation and the call number domain combination producing of the 2nd RLC PDU Second information of beginning data segment.
19. RLC entity in sending side according to claim 15, which is characterized in that
The head information acquisition unit, specifically for constructing the call number domain comprising the SN and the 2nd RLC PDU Second information of the initial data section.
20. according to sending side RLC entity described in any one of claim 4-12 or 14-19 claim, feature exists In the vector table acquiring unit is specifically used for:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the receiving side RLC entity is sent；The coefficient vector table is the receiving side RLC real The body S and L based on the received, is calculated according to vandermonde matrix or Cauchy matrix；Alternatively,
According to the S and the L, the coefficient vector is calculated according to the vandermonde matrix or the Cauchy matrix Table.
21. a kind of receiving side wireless spread-spectrum technology RLC entity characterized by comprising
Receiving unit, for receiving the first rlc protocol data cell PDU, the first RLC of sending side RLC entity transmission PDU includes the first data segment set generated according to initial data section, and the first data segment set includes multiple data segments, institute Stating the first RLC PDU includes the initial data section sequence number SN；
Transmission unit, for when determination cannot obtain the initial data section, the sending side Xiang Suoshu RLC entity to send carrying institute State the state report of SN；Wherein, the SN generates the second data segment set for the sending side RLC entity, according to described the Two data segment set obtain the 2nd RLC PDU, and the second data segment set is generated according to the initial data section；
The receiving unit is also used to receive the 2nd RLC PDU that the sending side RLC entity is sent；
Data segment acquiring unit, for according to the received first RLC PDU and the 2nd RLC PDU of the receiving unit Obtain the initial data section.
22. receiving side RLC entity according to claim 21, which is characterized in that the receiving side RLC entity further include:
Number acquiring unit, for obtaining the number for retransmitting data segment；
The state report that the transmission unit is sent also carries for the re-transmission data segment that the number acquiring unit obtains Number, the number for retransmitting data segment determine in the second data segment set generated for the sending side RLC entity Data segment number, wherein the data segment number in the second data segment set is greater than or equal to for retransmitting data segment Number.
23. the receiving side RLC entity according to claim 21 or 22, which is characterized in that the receiving side RLC entity also wraps It includes:
Vector table acquiring unit, for obtaining coefficient vector table；It wherein, include M coefficient vector, institute in the coefficient vector table State the corresponding call number of each coefficient vector in M coefficient vector；The M is positive integer；
Determination unit, for according to the call number domain of the first RLC PDU and vector table acquiring unit acquisition Coefficient vector table obtains coefficient vector corresponding to each data segment in the first data segment set, forms coefficient vector Set；According to the coefficient vector set, calculate whether the rank of matrix that the coefficient vector collection is combined into is equal to S, the S is The number of segment that the sending side RLC entity divides the corresponding bit string to be sent of the initial data section, the S are positive integer；When When the rank of matrix that the coefficient vector collection calculated is combined into is not equal to S, it is determined that the initial data section cannot be obtained；Or Person is when the rank of matrix that the coefficient vector collection of calculating is combined into is equal to S, it is determined that can obtain the initial data section.
24. receiving side RLC entity according to claim 23, which is characterized in that the vector table acquiring unit is specifically used In:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the sending side RLC entity is sent；The coefficient vector table is the sending side RLC real Body is calculated according to the S and L according to vandermonde matrix or Cauchy matrix；The S and L is used for the transmission Side RLC entity obtains the corresponding bit string to be sent of the initial data section, and L is positive integer；Alternatively,
The coefficient is calculated according to the vandermonde matrix or the Cauchy matrix in the S and L based on the received Vector table.
25. a kind of wireless link control transmission method characterized by comprising
Sending the first rlc protocol data cell PDU, the first RLC PDU to receiving side wireless spread-spectrum technology RLC entity includes According to the first data segment set that initial data section generates, the first data segment set includes multiple data segments, and described first RLC PDU includes the initial data section sequence number SN；
The state report for the carrying SN that the receiving side RLC entity is sent is received, the state report is in the reception Side RLC entity determination, which cannot obtain, to be sent after the initial data section；
The second data segment set of the initial data section is generated according to the SN；
The 2nd RLC PDU is obtained according to the second data segment set；
The 2nd RLC PDU is sent to the receiving side RLC entity, so that the receiving side RLC entity is according to described One RLC PDU and the 2nd RLC PDU obtains the initial data section.
26. according to the method for claim 25, which is characterized in that retransmit data when the received state report also carries When the number of section, before the second data segment set for generating the initial data section according to the SN, further includes:
The data segment number in the second data segment set is determined according to the number for retransmitting data segment, wherein described the Data segment number in two data segment set is greater than or equal to the number for retransmitting data segment.
27. according to the method for claim 26, which is characterized in that send the first RLC association to receiving side RLC entity described Before view data cell PDU, further includes:
Generate the first data segment set of the initial data section；
The first RLC PDU is obtained according to the first data segment set.
28. according to the method for claim 27, which is characterized in that generate described the first of the initial data section described Before data segment set, further includes:
Obtain coefficient vector table；It include M coefficient vector in the coefficient vector table, each system in the M coefficient vector Number vector corresponds to a call number, and the M is positive integer；
Store the coefficient vector table obtained；
The the first data segment set for generating the initial data section, comprising:
The sub- bit string set to be sent of the initial data section is obtained, is wrapped in the sub- bit string set to be sent of the initial data section Containing S sections of sub- bit strings to be sent, the length of each of described S sections of sub- bit string to be sent sub- bit string to be sent is L, the S with The L is positive integer；
The sub- bit string set to be sent of the initial data section is stored into memory；
N number of coefficient vector is chosen from the coefficient vector table；The N is and to be less than or equal to described more than or equal to the S The positive integer of M；
According to the sub- bit string set to be sent of the initial data section and the coefficient vector, the first data segment collection is generated It closes；It include N number of data segment in the first data segment set.
29. according to the method for claim 28, which is characterized in that obtain institute according to the first data segment set described Before stating the first RLC PDU, further includes:
First information of the initial data section is obtained, first information carries the call number of the first RLC PDU Domain；
It is described that the first RLC PDU is obtained according to the first data segment set, comprising:
According to the size of current transmittable data, B data segment is chosen from the first data segment set and constitutes described first The data field of RLC PDU；The B is the positive integer less than or equal to the N；
By described in the data field combination producing of first information of the initial data section and the first RLC PDU first RLC PDU。
30. according to the method for claim 29, which is characterized in that the sub- position to be sent for obtaining the initial data section Set of strings, comprising:
Obtain the bit string to be sent of the initial data section；The length of the bit string to be sent is S*L；
The bit string to be sent is divided to obtain the sub- bit string collection to be sent comprising described S sections sub- bit string to be sent It closes.
31. according to the method for claim 30, which is characterized in that the position to be sent for obtaining the initial data section String, comprising:
According to the caching sequence of RLC SDU in RLC Service Data Unit SDU pre-stored in memory set, from the RLC In SDU set intercepted length is S*L bit strings, using the length for S*L bit string as the initial data section to Send bit string.
32. according to the method for claim 30, which is characterized in that the position to be sent for obtaining the initial data section String, comprising:
According to the caching sequence of RLC SDU in RLC SDU pre-stored in memory set, from RLC SDU set The bit string that intercepted length is X；The length is that X bit strings are the initial data section；
Internal layer head information is obtained according to the bit string that the length is X；Wherein, comprising removing the last one in the internal layer head information RLC SDU perhaps RLC SDU segmentation outside each RLC SDU and/or RLC SDU segmentation length information or the internal layer Include the boundary demarcation information between all RLC SDU and/or RLC SDU segmentation in head information；
The length is formed to the bit string to be sent of the initial data section for X bit strings and the internal layer head information.
33. according to the method for claim 30, which is characterized in that in the position to be sent for obtaining the initial data section Before string, further includes:
The every two RLC SDU boundary addition delimiter in pre-stored RLC SDU set obtains new in memory RLC SDU set；
The bit string to be sent for obtaining the initial data section, comprising:
According to the caching sequence of RLC SDU in the new RLC SDU set, length is intercepted from the new RLC SDU set The bit string that degree is S*L, the length is the bit string to be sent that S*L bit strings are the initial data section, and the length is Bit string in S*L bit strings in addition to the delimiter is the initial data section.
34. according to the method for claim 29, which is characterized in that described to choose N number of coefficient from the coefficient vector table Vector, comprising:
N number of coefficient vector is sequentially chosen from the coefficient vector table；
The call number domain of the first RLC PDU carried in first information of the acquisition includes:
Only call number is minimum in the corresponding coefficient vector of the B data segment in the data field comprising the first RLC PDU Coefficient vector.
35. according to the method for claim 29, which is characterized in that described to choose N number of coefficient from the coefficient vector table Vector, comprising:
N number of coefficient vector is randomly selected from the coefficient vector table；
The call number domain for the first RLC PDU that first information of the acquisition carries specifically includes:
Each coefficient vector in the corresponding coefficient vector of the B data segment in data field comprising the first RLC PDU Call number.
36. according to the method for claim 31, which is characterized in that first letter for obtaining the initial data section Breath, comprising:
Construct first information of the initial data section；
First information of the initial data section is stored into the memory；
Wherein, comprising including except last in the SN, the initial data section in first information of the initial data section The length information of each RLC SDU and/or RLC SDU segmentation outside one RLC SDU or RLC SDU segmentation and described the The call number domain of one RLC PDU.
37. the method according to claim 32 or 33, which is characterized in that first for obtaining the initial data section Information, comprising:
First information of the initial data section in call number domain of the construction comprising the SN and the first RLC PDU.
38. according to the method for claim 29, which is characterized in that generate the initial data section according to the SN described The second data segment set before, further includes:
Obtain the coefficient vector table of storage；
The second data segment set that the initial data section is generated according to the SN, comprising:
According to the SN, the sub- bit string set to be sent of the initial data section is read from the memory；
According to the data segment number, the not used coefficient vector of respective numbers is chosen from the coefficient vector table；
According to the sub- bit string set to be sent of the initial data section and the not used coefficient vector, second number is generated According to Duan Jihe.
39. according to the method for claim 38, which is characterized in that obtain the according to the second data segment set described Before two RLC PDU, further includes:
Second information of the initial data section is obtained, second information includes the call number of the 2nd RLC PDU Domain；
It is described that 2nd RLC PDU is obtained according to the second data segment set, comprising:
According to the size of current transmittable data, A data segment is chosen from the second data segment set and constitutes described second The data field of RLC PDU；The A is the positive integer less than or equal to the data segment number in the second data segment set；
By described in the data field combination producing of second information of the initial data section and the 2nd RLC PDU second RLC PDU。
40. according to the method for claim 39, which is characterized in that the data according in the second data segment set Section number, chooses the not used coefficient vector of respective numbers from the coefficient vector table, comprising:
According to the data segment number in the second data segment set, respective numbers are sequentially chosen from the coefficient vector table The not used coefficient vector；
The call number domain for the 2nd RLC PDU that second information of the acquisition includes includes:
Only in the corresponding not used coefficient vector of the A data segment in the data field comprising the 2nd RLC PDU most Small call number.
41. according to the method for claim 39, which is characterized in that the data according in the second data segment set Section number, chooses the not used coefficient vector of respective numbers from the coefficient vector table, comprising:
According to the data segment number in the second data segment set, respective numbers are randomly selected from the coefficient vector table The not used coefficient vector；
The call number domain for the 2nd RLC PDU that second information of the acquisition includes includes:
The corresponding each not used coefficient vector of the A data segment in data field comprising the 2nd RLC PDU Call number.
42. according to the method for claim 39, which is characterized in that second letter for obtaining the initial data section Breath, comprising:
According to the SN, first information of the initial data section is read from the memory；
By the SN for including in first information of the initial data section, the initial data section first information in wrap Include in the initial data section contained except the last one RLC SDU or RLC SDU segmentation in addition to each RLC SDU and/ Or RLC SDU segmentation length information and the 2nd RLC PDU call number domain combination producing described in initial data section Second information.
43. according to the method for claim 39, which is characterized in that second letter for obtaining the initial data section Breath, comprising:
Second information of the initial data section in call number domain of the construction comprising the SN and the 2nd RLC PDU.
44. according to method described in any one of claim 28-36 or 38-43 claim, which is characterized in that described to obtain Take coefficient vector table, comprising:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the receiving side RLC entity is sent；The coefficient vector table is the receiving side RLC real The body S and L based on the received, is calculated according to vandermonde matrix or Cauchy matrix；Alternatively,
According to the S and the L, the coefficient vector is calculated according to the vandermonde matrix or the Cauchy matrix Table.
45. a kind of wireless link control transmission method characterized by comprising
Receive the first rlc protocol data cell PDU, the first RLC PDU that wireless spread-spectrum technology RLC entity in sending side is sent Including the first data segment set generated according to initial data section, the first data segment set includes multiple data segments, described First RLC PDU includes the initial data section sequence number SN；
When determination can not obtain the initial data section, the sending side Xiang Suoshu RLC entity sends the state for carrying the SN Report；Wherein, the SN generates the second data segment set for the sending side RLC entity, according to the second data segment collection It closes and obtains the 2nd RLC PDU, the second data segment set is generated according to the initial data section；
Receive the 2nd RLC PDU that the sending side RLC entity is sent；
The initial data section is obtained according to the first RLC PDU and the 2nd RLC PDU.
46. according to the method for claim 45, which is characterized in that carried in described sent to the sending side RLC entity Before the state report of the SN, further includes:
Obtain the number for retransmitting data segment；
The state report of the transmission also carries the number for retransmitting data segment, and the number for retransmitting data segment is for described Sending side RLC entity determines the data segment number in the second data segment set generated, wherein the second data segment collection Data segment number in conjunction is greater than or equal to the number for retransmitting data segment.
47. the method according to claim 45 or 46, which is characterized in that it is described when determination can not obtain it is described original When data segment, the sending side Xiang Suoshu RLC entity is sent before the state report for carrying the SN, further includes:
Obtain coefficient vector table；It include M coefficient vector in the coefficient vector table, each system in the M coefficient vector Number vector corresponds to a call number, and the M is positive integer；
According to the call number domain of the first RLC PDU and the coefficient vector table, obtain every in the first data segment set Coefficient vector corresponding to one data segment forms coefficient vector set；
According to the coefficient vector set, calculate whether the rank of matrix that the coefficient vector collection is combined into is equal to S, the S is The number of segment that the sending side RLC entity divides the corresponding bit string to be sent of the initial data section, the S are positive integer；
When the rank of matrix that the coefficient vector collection of calculating is combined into is not equal to S, it is determined that the original number cannot be obtained According to section；Or when the rank of matrix that the coefficient vector collection of calculating is combined into is equal to S, it is determined that the original number can be obtained According to section.
48. according to the method for claim 47, which is characterized in that the acquisition coefficient vector table, comprising:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the sending side RLC entity is sent；The coefficient vector table is the sending side RLC real Body is calculated according to the S and L according to vandermonde matrix or Cauchy matrix；The S and L is used for the transmission Side RLC entity obtains the corresponding bit string to be sent of the initial data section, and L is positive integer；Alternatively,
The coefficient is calculated according to the vandermonde matrix or the Cauchy matrix in the S and L based on the received Vector table.
49. a kind of sending side wireless spread-spectrum technology RLC entity characterized by comprising
Transmitter, for including to the first rlc protocol data cell PDU, the first RLC PDU of receiving side RLC entity transmission According to the first data segment set that initial data section generates, the first data segment set includes multiple data segments, and described first RLC PDU includes the initial data section sequence number SN；
Receiver, for receiving the state report for the carrying SN that the receiving side RLC entity is sent, the state report is It is sent after the receiving side RLC entity determination cannot obtain the initial data section；
Processor, the SN for being obtained according to the receiver generate the second data segment set of the initial data section, And the 2nd RLC PDU is obtained according to the second data segment set of the generation；
The transmitter, it is real that the 2nd RLC PDU for being also used to obtain the processor is sent to the receiving side RLC Body, so that the receiving side RLC entity obtains the initial data according to the first RLC PDU and the 2nd RLC PDU Section.
50. RLC entity in sending side according to claim 49, which is characterized in that the received state of receiver Report also carries the number for retransmitting data segment；
The processor is also used to before the second data segment set for generating the initial data section according to the SN, according to The received number for retransmitting data segment of receiver determines the data segment in the second data segment set of the generation Number, wherein the data segment number in the second data segment set is greater than or equal to the number for retransmitting data segment.
51. RLC entity in sending side according to claim 50, which is characterized in that
The processor is also used to before the transmitter sends the first RLC PDU to receiving side RLC entity, described in generation The first data segment set of initial data section, and described first is obtained according to the first data segment set of the generation RLC PDU。
52. RLC entity in sending side according to claim 51, which is characterized in that
The processor is also used to before the first data segment set for generating the initial data section, obtain coefficient to Scale；It include M coefficient vector in the coefficient vector table, each coefficient vector in the M coefficient vector is one corresponding Call number, the M are positive integer；
The sending side RLC entity, further includes:
Memory, for storing the coefficient vector table of the acquisition；
The processor is specifically used for:
The sub- bit string set to be sent of the initial data section is obtained, is wrapped in the sub- bit string set to be sent of the initial data section Containing S sections of sub- bit strings to be sent, the length of each of described S sections of sub- bit string to be sent sub- bit string to be sent is L, the S with The L is positive integer；
The sub- bit string set to be sent of the initial data section is stored into the memory；
N number of coefficient vector is chosen from the coefficient vector table that the memory stores；The N be more than or equal to the S, And it is less than or equal to the positive integer of the M；
It is raw according to the coefficient vector of the sub- bit string set to be sent of the initial data section of the storage and the selection At the first data segment set；It include N number of data segment in the first data segment set.
53. RLC entity in sending side according to claim 52, which is characterized in that
The processor is also used to before obtaining the first RLC PDU according to the first data segment set of generation, obtains institute First information of initial data section is stated, first information carries the call number domain of the first RLC PDU；
The processor, is specifically used for:
According to the size of current transmittable data, B data segment is chosen from the first data segment set of the generation and constitutes institute State the data field of the first RLC PDU；The B is the positive integer less than or equal to the N；
By first information of the initial data section of the acquisition and the data field combination producing of the first RLC PDU The first RLC PDU.
54. RLC entity in sending side according to claim 53, which is characterized in that the processor is specifically used for:
Obtain the bit string to be sent of the initial data section；The length of the bit string to be sent is S*L；
It includes the described to be sent of described S sections sub- bit string to be sent that the bit string to be sent of the acquisition, which is divided to obtain, Sub- bit string set.
55. RLC entity in sending side according to claim 54, which is characterized in that the processor is specifically used for:
According to the caching sequence of RLC SDU in RLC Service Data Unit SDU pre-stored in memory set, from the RLC In SDU set intercepted length is S*L bit strings, using the length for S*L bit string as the initial data section to Send bit string.
56. RLC entity in sending side according to claim 54, which is characterized in that the processor is specifically used for:
According to the caching sequence of RLC SDU in RLC SDU pre-stored in memory set, from RLC SDU set The bit string that intercepted length is X；The length is that X bit strings are the initial data section；
Internal layer head information is obtained according to the bit string that the length is X, wherein comprising removing the last one in the internal layer head information RLC SDU perhaps RLC SDU segmentation outside each RLC SDU and/or RLC SDU segmentation length information or the internal layer Include the boundary demarcation information between all RLC SDU and/or RLC SDU segmentation in head information；
The length is formed to the bit string to be sent of the initial data section for X bit strings and the internal layer head information.
57. RLC entity in sending side according to claim 54, which is characterized in that
The processor is also used to before the bit string to be sent for obtaining the initial data section, is stored in advance in memory RLC SDU set in every two RLC SDU boundary addition delimiter obtain new RLC SDU set；
The processor, specifically for the caching sequence according to RLC SDU in the obtained new RLC SDU set, from institute The bit string that intercepted length is S*L in new RLC SDU set is stated, the length is that S*L bit strings are the initial data The bit string to be sent of section, the bit string in the bit string that the length is S*L in addition to the delimiter is the initial data section.
58. RLC entity in sending side according to claim 53, which is characterized in that
The processor, specifically for sequentially choosing N number of coefficient from the coefficient vector table that the memory stores Vector；
The call number domain for the first RLC PDU that the processor obtains only includes in the data field of the first RLC PDU The corresponding selection of the B data segment coefficient vector in the smallest coefficient vector of call number.
59. RLC entity in sending side according to claim 53, which is characterized in that
The processor, specifically for randomly selecting N number of coefficient from the coefficient vector table that the memory stores Vector；
In data field in the call number domain for the first RLC PDU that the processor obtains comprising the first RLC PDU The corresponding selection of the B data segment coefficient vector in each coefficient vector call number.
60. RLC entity in sending side according to claim 55, which is characterized in that
The processor, specifically for constructing first information of the initial data section；
The memory is also used to store first information of the initial data section that the processor obtains；
Wherein, comprising including except last in the SN, the initial data section in first information of the initial data section The length information of each RLC SDU and/or RLC SDU segmentation outside one RLC SDU or RLC SDU segmentation and described the The call number domain of one RLC PDU.
61. the sending side RLC entity according to claim 56 or 57, which is characterized in that
The processor, specifically for constructing the described original of the call number domain comprising the SN and the first RLC PDU First information of data segment.
62. RLC entity in sending side according to claim 53, which is characterized in that
The processor is also used to before the second data segment set for generating the initial data section according to the SN, from institute It states memory and obtains the coefficient vector table；
The processor is specifically used for being read from the memory described original according to the received SN of the receiver The sub- bit string set to be sent of data segment；According to the data segment number, chosen from the coefficient vector table of the acquisition The not used coefficient vector of respective numbers；According to the sub- bit string set to be sent of the initial data section and the institute of the selection Not used coefficient vector is stated, the second data segment set is generated.
63. RLC entity in sending side according to claim 62, which is characterized in that
The processor is also used to before obtaining the 2nd RLC PDU according to the second data segment set, is obtained described original Second information of data segment, second information include the call number domain of the 2nd RLC PDU；
The processor chooses A specifically for the size according to current transmittable data from the second data segment set Data segment constitutes the data field of the 2nd RLC PDU；The A is less than or equal to the data in the second data segment set The positive integer of section number；By second information of the initial data section of the acquisition and described second obtained 2nd RLC PDU described in the data field combination producing of RLC PDU.
64. RLC entity in sending side according to claim 63, which is characterized in that
The processor, specifically for according to the data segment number in the second data segment set, from the coefficient vector table Middle sequence chooses the not used coefficient vector of respective numbers；
The call number domain for the 2nd RLC PDU that the processor obtains only includes in the data field of the 2nd RLC PDU The corresponding not used coefficient vector of the A data segment in lowest index number.
65. RLC entity in sending side according to claim 63, which is characterized in that
The processor, specifically for the data segment number in the second data segment set according to the selection, from described The not used coefficient vector of respective numbers is randomly selected in coefficient vector table；
It wherein, include the data of the 2nd RLC PDU in the call number domain for the 2nd RLC PDU that the processor obtains The call number of the corresponding each not used coefficient vector of the A data segment in domain.
66. RLC entity in sending side according to claim 63, which is characterized in that
The processor is specifically used for reading first letter of the initial data section from the memory according to the SN Breath, and will be in first information of the SN, the initial data section that include in first information of the initial data section The each RLC SDU in addition to the last one RLC SDU or RLC SDU segmentation for including in the initial data section for including And/or RLC SDU segmentation length information and the 2nd RLC PDU call number domain combination producing described in initial data Second information of section.
67. RLC entity in sending side according to claim 63, which is characterized in that
The processor, specifically for constructing the described original of the call number domain comprising the SN and the 2nd RLC PDU Second information of data segment.
68. according to sending side RLC entity described in any one of claim 52-60 or 62-67 claim, feature exists In the processor is specifically used for:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the receiving side RLC entity is sent；The coefficient vector table is the receiving side RLC real The body S and L based on the received, is calculated according to vandermonde matrix or Cauchy matrix；Alternatively,
According to the S and the L, the coefficient vector is calculated according to the vandermonde matrix or the Cauchy matrix Table.
69. a kind of receiving side wireless spread-spectrum technology RLC entity characterized by comprising
Receiver, for receiving the first rlc protocol data cell PDU, the first RLC PDU of sending side RLC entity transmission Including the first data segment set generated according to initial data section, the first data segment set includes multiple data segments, described First RLC PDU includes the initial data section sequence number SN；
Transmitter, for when determination cannot obtain the initial data section, the sending side Xiang Suoshu RLC entity to be sent described in carrying The state report of SN；Wherein, the SN generates the second data segment set for the sending side RLC entity, according to described second Data segment set obtains the 2nd RLC PDU, and the second data segment set is generated according to the initial data section；
The receiver is also used to receive the 2nd RLC PDU that the sending side RLC entity is sent；
Processor, for obtaining the original according to the receiver received first RLC PDU and the 2nd RLC PDU Beginning data segment.
70. receiving side RLC entity according to claim 69, which is characterized in that
The processor is also used to obtain the number for retransmitting data segment；
The state report that the transmitter is sent also carries the number for the re-transmission data segment that the processor obtains, described heavy The number for passing data segment determines that the data segment in the second data segment set generated is a for the sending side RLC entity Number, wherein the data segment number in the second data segment set is greater than or equal to the number for retransmitting data segment.
71. the receiving side RLC entity according to claim 69 or 70, which is characterized in that
The processor is also used to obtain coefficient vector table；It wherein, include M coefficient vector in the coefficient vector table, it is described The corresponding call number of each coefficient vector in M coefficient vector；The M is positive integer；And according to the first RLC PDU Call number domain and the acquisition the coefficient vector table, it is right to obtain each data segment institute in the first data segment set The coefficient vector answered forms coefficient vector set；According to the coefficient vector set, calculate what the coefficient vector collection was combined into Whether rank of matrix is equal to S, and the S is that the sending side RLC entity draws the corresponding bit string to be sent of the initial data section The number of segment divided, the S are positive integer；When the rank of matrix that the coefficient vector collection of calculating is combined into is not equal to S, it is determined that The initial data section cannot be obtained；Or when the rank of matrix that the coefficient vector collection of calculating is combined into is equal to S, then really Surely obtain the initial data section.
72. receiving side RLC entity according to claim 71, which is characterized in that the processor is specifically used for:
Read the pre-stored coefficient vector table；Alternatively,
Receive the coefficient vector table that the sending side RLC entity is sent；The coefficient vector table is the sending side RLC real Body is calculated according to the S and L according to vandermonde matrix or Cauchy matrix；The S and L is used for the transmission Side RLC entity obtains the corresponding bit string to be sent of the initial data section, and L is positive integer；Alternatively,
The coefficient is calculated according to the vandermonde matrix or the Cauchy matrix in the S and L based on the received Vector table.
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