CN108282269A - A kind of method, apparatus and protocol stack apparatus of data distribution recombination - Google Patents
A kind of method, apparatus and protocol stack apparatus of data distribution recombination Download PDFInfo
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The present invention provides the method, apparatus and protocol stack apparatus of a kind of recombination of data distribution, method is applied to data distribution reconstruction unit, including：In regrouping process, point module and radio link control remote end module is concentrated to receive radio link control service data unit from radio link control, the radio link control service data unit is recombinated to obtain Packet Data Convergence Protocol data cell, gives the Packet Data Convergence Protocol data cell to Packet Data Convergence Protocol module according to the sequential delivery of data cell；And in distribution procedure, the Packet Data Convergence Protocol data cell is received from Packet Data Convergence Protocol module, concentrates point module and radio link control remote end module to distribute the Packet Data Convergence Protocol data cell to each radio link control.The structure and configuration of the function module of data distribution recombination are defined, and implementation method is simple, can be compatible with existing agreement framework.
Description
Technical field
The present invention relates to radio network technique, the method, apparatus and protocol stack that particularly relate to a kind of data distribution recombination are set
It is standby.
Background technology
There is the wireless network architecture that ideal and non-ideal forward pass (Fronthaul) transmission network coexists in 5G networks.
In existing scheme, the base of data distribution recombination (DRC, Data Reordering Control) module is defined
This concept, but then there are no provide relevant concrete scheme for the structure and configuration for DRC modules.
Invention content
Technical problems to be solved of the embodiment of the present invention are to provide a kind of method, apparatus and protocol stack of data distribution recombination
Equipment, to data distribution recombinate DRC function modules structure and configuration be defined.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of method of data distribution recombination, it is applied to data
Distribute reconstruction unit, method includes：In regrouping process, point module and wireless spread-spectrum technology are concentrated from radio link control
Agreement remote end module receives data distribution recombination protocol Data Unit DRC-PDU, and protocol data is recombinated to the data distribution
Cells D RC-PDU is recombinated to obtain data distribution de-fragmentation service data cell DRC-SDU, by the data distribution de-fragmentation service
Data cell DRC-SDU is submitted to Packet Data Convergence Protocol module in sequence；And
In distribution procedure, data distribution de-fragmentation service data cell is received from the Packet Data Convergence Protocol module
DRC-SDU concentrates point module and the distribution pair of radio link control remote end module to each radio link control
The data distribution recombination protocol Data Unit DRC-PDU answered.
In a preferred embodiment, the head packet of the data structure of data distribution recombination protocol Data Unit DRC-PDU
It includes：
The sequence number and reserved field R of the data distribution recombination protocol Data Unit DRC-PDU, sequence number and reserved field R
Length it is variable；
In distribution procedure, the reserved field R that setting data distribution recombinates protocol Data Unit DRC-PDU is 0, is receiving weight
During group, ignore reserved field R.
In a preferred embodiment, point module and wireless spread-spectrum technology are concentrated to each radio link control
Agreement remote end module is distributed corresponding data distribution recombination protocol Data Unit DRC-PDU and is specifically included：
According to the instruction of minizone MAC, the same data distribution recombination protocol Data Unit DRC-PDU to eat dishes without rice or wine will be sent to
It is encapsulated as one group, the reserved field R that this group of data distribution recombination protocol Data Unit DRC-PDU is arranged is 0, and is assigned identical
Sequence number.
In a preferred embodiment, data distribution recombination protocol Data Unit DRC-PDU is recombinated to obtain
Data distribution de-fragmentation service data cell DRC-SDU is specifically included：
It eats dishes without rice or wine to receive radio link control concentration point module and radio link control remote end module hair from difference
The data distribution recombination protocol Data Unit DRC-PDU come；
Data distribution recombination protocol Data Unit DRC-PDU is parsed, data distribution recombination agreement number is obtained
According to the serial number and data distribution de-fragmentation service data cell DRC-SDU of cells D RC-PDU, ignore reserved field R；
The data distribution de-fragmentation service data cell DRC-SDU is ranked up according to sequence number；
The data distribution de-fragmentation service data cell DRC-SDU will be delivered to Packet Data Convergence Protocol in sequence
Module.
In a preferred embodiment, further include re-establishing program：
Will not yet the number that point module and radio link control remote end module are sent be concentrated to radio link control
It is abandoned according to distribution recombination protocol Data Unit DRC-PDU, and, it would be desirable to the data submitted to Packet Data Convergence Protocol module
Distribution de-fragmentation service data cell DRC-SDU is submitted in sequence, and associated counter is reset.
A kind of device of data distribution recombination, including：
Radio link control concentrates point module, for receiving the data distribution recombination from data distribution recombination module
Service data unit DRC-SDU, and send radio link control service data unit RLC-SDU；
Radio link control remote end module, for receiving the data distribution recombination clothes from data distribution recombination module
Be engaged in data cell DRC-SDU, and sends radio link control service data unit RLC-SDU；
Data distribution recombination module is used in regrouping process, from radio link control concentration point module and wirelessly
Link Control Protocol remote end module receives data distribution recombination protocol Data Unit DRC-PDU, is recombinated to the data distribution
Protocol Data Unit DRC-PDU is recombinated to obtain data distribution de-fragmentation service data cell DRC-SDU, by the data distribution
De-fragmentation service data cell DRC-SDU is submitted to Packet Data Convergence Protocol module in sequence；And
In distribution procedure, data distribution de-fragmentation service data cell is received from the Packet Data Convergence Protocol module
DRC-SDU concentrates point module and the distribution pair of radio link control remote end module to each radio link control
The data distribution recombination protocol Data Unit DRC-PDU answered.
In a preferred embodiment, the head packet of the data structure of data distribution recombination protocol Data Unit DRC-PDU
It includes：
The sequence number and reserved field R of the data distribution recombination protocol Data Unit DRC-PDU, sequence number and reserved field R
Length it is variable；
In distribution procedure, the reserved field R that setting data distribution recombinates protocol Data Unit DRC-PDU is 0, is receiving weight
During group, ignore reserved field R.
In a preferred embodiment, data distribution recombination module is additionally operable in distribution procedure, as transmitting terminal, root
According to the instruction of minizone MAC, the same data distribution recombination protocol Data Unit DRC-PDU to eat dishes without rice or wine will be sent to and be encapsulated as one
Group, the reserved field R that this group of data distribution recombination protocol Data Unit DRC-PDU is arranged is 0, and assigns identical sequence number.
In a preferred embodiment, data distribution recombination module is additionally operable in regrouping process, as receiving terminal, from
Difference eats dishes without rice or wine to receive the data point that radio link control concentrates point module and radio link control remote end module to send
Hair recombination protocol Data Unit DRC-PDU；
Data distribution recombination protocol Data Unit DRC-PDU is parsed, data distribution recombination agreement number is obtained
According to the serial number and data distribution de-fragmentation service data cell DRC-SDU of cells D RC-PDU, ignore reserved field R；
The data distribution de-fragmentation service data cell DRC-SDU is ranked up according to sequence number；
The data distribution de-fragmentation service data cell DRC-SDU will be delivered to Packet Data Convergence Protocol in sequence
Module.
In a preferred embodiment, data distribution recombination module is additionally operable to execution and re-establishes program, re-establishing program
In, will not yet the data distribution that point module and radio link control remote end module are sent be concentrated to radio link control
Protocol Data Unit DRC-PDU is recombinated to abandon, and, it would be desirable to the data distribution weight submitted to Packet Data Convergence Protocol module
Group service data unit DRC-SDU is submitted in sequence, and associated counter is reset.
A kind of protocol stack apparatus, including radio link control concentrate point module, radio link control distal end mould
Block and data distribution recombination module；And
Minizone MAC module, the length of the sequence number DRC SN for configuration packet data convergence protocol data cell will
The length of the sequence number DRC SN is sent to data distribution recombination module, for the data distribution recombination module according to the sequence
The length of row number sends the Packet Data Convergence Protocol data cell.
Compared with prior art, the method, apparatus and protocol stack of a kind of data distribution recombination provided in an embodiment of the present invention
Equipment at least has the advantages that：The structure and configuration of the function module of data distribution recombination are defined, and
Implementation method is simple, can be compatible with existing agreement framework.
Description of the drawings
Fig. 1 is the protocol stack architecture schematic diagram with data distribution recombination function；
Fig. 2 is a kind of operation principle schematic diagram one of the method for data distribution recombination；
Logical relation schematic diagrames of the Fig. 3 between DRC, PDCP and RLC；
Fig. 4 is the data structure schematic diagram of data distribution recombination data；
Fig. 5 is a kind of operation principle schematic diagram two of the method for data distribution recombination；
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.In the following description, such as specific configuration is provided and the specific detail of component is only
In order to help comprehensive understanding the embodiment of the present invention.It therefore, it will be apparent to those skilled in the art that can be to reality described herein
Example is applied to make various changes and modifications without departing from scope and spirit of the present invention.In addition, for clarity and brevity, it is omitted pair
The description of known function and construction.
Rlc layer is located at PDCP layers between MAC layer, and rlc layer passes through SAP (Service Access Point) and PDCP layers
It is communicated, and is communicated with MAC layer by logic channel.There are one RLC entities for each logic channel of each UE
(RLC entity).The data cell that RLC entities are received from PDCP layers, or PDCP layers of data cell is sent to referred to as RLC
SDU (or PDCP PDU), the data cell that RLC entities are received from MAC layer, or the data cell of MAC layer is sent to referred to as RLC
PDU (or MAC SDU).
In the prior art, each RLC entities are configured by RRC, and there are three types of patterns according to type of service：Transparent mode
(TM), Unacknowledged Mode (UM), affirmation mode (AM).For transparent mode and Unacknowledged Mode, RLC entities be it is unidirectional, respectively
From gathering around there are one sending entity and a receiving entity, it is independently completed sending and receiving for data；And for affirmation mode,
RLC entities are two-way.Although only there are one entities, it is divided into receiving side and sending side and is connect to complete the transmission of data
The function of receipts.And they can communicate with each other each other.
The present invention devises the device recombinated to data distribution in based on distributed access network agreement framework；It defines
Data distribution recombinates the method for (DRC, Data Reordering Control) and required data format.
For the wireless network architecture that ideal and non-ideal forward pass transmission network coexists in 5G networks, it is proposed that be adaptive to
The protocol stack architecture of planar network architecture is accessed, data distribution recombination module (DRC) is increased in protocol stack architecture, introducing devises data
Distribute recombination function.As shown in Figure 1, the major function of data distribution recombination module is：It, will be from multiple when receiving recombination data
The data received on RLCcenter/RLCremote are recombinated, be submitted in order Packet Data Convergence Protocol (PDCP,
Packet Data Convergence Protocol)；When transmission data, provided according to minizone MAC (InterCell MAC)
Data byte size, to each RLCcenter/RLCremote distribute data.
The embodiment of the present invention provides a kind of method of data distribution recombination, as shown in Fig. 2, recombinating mould applied to data distribution
Block, including：
In regrouping process, point module and radio link control remote end module is concentrated to connect from radio link control
Data distribution recombination protocol Data Unit DRC-PDU is received, data distribution recombination protocol Data Unit DRC-PDU is carried out
Recombination obtains data distribution de-fragmentation service data cell DRC-SDU, by the data distribution de-fragmentation service data cell DRC-SDU
It is submitted to Packet Data Convergence Protocol module in sequence；And
In distribution procedure, data distribution de-fragmentation service data cell is received from the Packet Data Convergence Protocol module
DRC-SDU concentrates point module and the distribution pair of radio link control remote end module to each radio link control
The data distribution recombination protocol Data Unit DRC-PDU answered.
Using technology provided in an embodiment of the present invention, to data distribution recombinate the structures of DRC modules, function and configure into
Definition is gone, and implementation method is simple, can be compatible with existing agreement framework.
In order to realize the major function of DRC modules, the data structure of DRC data is devised.
In a preferred embodiment, the head packet of the data structure of data distribution recombination protocol Data Unit DRC-PDU
It includes：
The sequence number and reserved field R of the data distribution recombination protocol Data Unit DRC-PDU, sequence number and reserved field R
Length it is variable；
In distribution procedure, the reserved field R that setting data distribution recombinates protocol Data Unit DRC-PDU is 0, is receiving weight
During group, ignore reserved field R.
As shown in figure 4, the head of DRC data includes：Sequence number (the DRC SN, Data of data distribution recombination data
Reordering Control Sequence Number) and reserved field R (Reserved)；Sequence number DRC SN indicate to correspond to
The sequence number of DRC PDU, R are reserved field, and it is 0 that reserved field R, which is arranged, in transmitting terminal, and receiving terminal ignores the reserved field.Wherein, DRC SN
It is variable with the length of R, it is not limited to length shown in Fig. 4, but to ensure that the length of overall data structure is 8*N bit, N=
0,1,2,3……。
In a preferred embodiment, point module and wireless spread-spectrum technology are concentrated to each radio link control
Agreement remote end module is distributed corresponding data distribution recombination protocol Data Unit DRC-PDU and is specifically included：
According to the instruction of minizone MAC, the same data distribution recombination protocol Data Unit DRC-PDU to eat dishes without rice or wine will be sent to
It is encapsulated as one group, the reserved field R that this group of data distribution recombination protocol Data Unit DRC-PDU is arranged is 0, and is assigned identical
Sequence number.
In a preferred embodiment, data distribution recombination protocol Data Unit DRC-PDU is recombinated to obtain
Data distribution de-fragmentation service data cell DRC-SDU is specifically included：
It eats dishes without rice or wine to receive radio link control concentration point module and radio link control remote end module hair from difference
The data distribution recombination protocol Data Unit DRC-PDU come；
Data distribution recombination protocol Data Unit DRC-PDU is parsed, data distribution recombination agreement number is obtained
According to the serial number and data distribution de-fragmentation service data cell DRC-SDU of cells D RC-PDU, ignore reserved field R；
The data distribution de-fragmentation service data cell DRC-SDU is ranked up according to sequence number；
The data distribution de-fragmentation service data cell DRC-SDU will be delivered to Packet Data Convergence Protocol in sequence
Module.
In the technical field of the present invention, triggering connects there are many reason of re-establishing, for example, data unit integrity
Verification failure, i.e., be dropped into data cell in transmission process, for example, PDCP is not connected to the data cell that should be connected to, to touch
It has sent out and has re-established, alternatively, number of retransmissions needs to rebuild after reaching maximum times.It re-establishes and refers to, needed for transmission data units
Transmission channel has existed, and currently needs to be multiplexed existing transmission channel, and needs to transmit new data cell, this
Process is the program re-established the connection, includes a series of signaling in the program re-established the connection, relates to distribution procedure and again
Group process.
Re-establish the connection program, it is common establish both linkers and be directed to distribution procedure and regrouping process, re-establish journey
In sequence, allow the out of order data delivery unit of bottom, and established in linker commonly, data cell is essential to pass in sequence
It hands over.
In a preferred embodiment, further include re-establishing program (Reestablishment Procedure)：
Will not yet the number that point module and radio link control remote end module are sent be concentrated to radio link control
It is abandoned according to distribution recombination protocol Data Unit DRC-PDU, and, it would be desirable to the data submitted to Packet Data Convergence Protocol module
Distribution de-fragmentation service data cell DRC-SDU is submitted in sequence, and associated counter is reset.
In an application scenarios, because certain reason, which triggers, re-establishes program, at this point, data distribution recombination module exists
Distribution and/or recombination are executed, is executed to radio link control centrostigma mould if current data distribution recombination module is in
During the data distribution recombination protocol Data Unit DRC-PDU that block and radio link control remote end module are sent, then
The data distribution not sent recombination protocol Data Unit DRC-PDU is abandoned, this process is also to have carried out data buffer storage clearly
Empty process, and it is slow to notify that radio link control concentrates point module, radio link control remote end module to empty data
It deposits and corresponding data control signaling, instruction.
If in the mistake to Packet Data Convergence Protocol module data delivery distribution de-fragmentation service data cell DRC-SDU
Cheng Zhong, then by the remaining data distribution de-fragmentation service data cell DRC-SDU not yet submitted, for example, DRC-SDU1, DRC-
SDU3 and DRC-SDU7 is delivered to Packet Data Convergence Protocol module in sequence, and associated counter is reset, at this point, DDRC-
What SDU5 and DRC-SDU6 was missing from.It should be noted that if it is normal recombination, and non-executing re-establishes the weight in program
Group, then should be by DRC-SDU1, RC-SDU2, DRC-SDU3DRC-SDU4, DDRC-SDU5, DRC-SDU6 and DRC-SDU7
It is delivered to Packet Data Convergence Protocol module in sequence, rather than just by remaining data distribution de-fragmentation service data sheet
First DRC-SDU1, DRC-SDU3 and DRC-SDU7 are delivered to Packet Data Convergence Protocol module in sequence.
The embodiment of the present invention provides a kind of device of data distribution recombination, as shown in figure 3, including：
Radio link control concentrates point module, for receiving the data distribution recombination from data distribution recombination module
Service data unit DRC-SDU, and send radio link control service data unit RLC-SDU；
Radio link control remote end module, for receiving the data distribution recombination clothes from data distribution recombination module
Be engaged in data cell DRC-SDU, and sends radio link control service data unit RLC-SDU；
Data distribution recombination module is used in regrouping process, from radio link control concentration point module and wirelessly
Link Control Protocol remote end module receives data distribution recombination protocol Data Unit DRC-PDU, is recombinated to the data distribution
Protocol Data Unit DRC-PDU is recombinated to obtain data distribution de-fragmentation service data cell DRC-SDU, by the data distribution
De-fragmentation service data cell DRC-SDU is submitted to Packet Data Convergence Protocol module in sequence；And
In distribution procedure, data distribution de-fragmentation service data cell is received from the Packet Data Convergence Protocol module
DRC-SDU concentrates point module and the distribution pair of radio link control remote end module to each radio link control
The data distribution recombination protocol Data Unit DRC-PDU answered.
Using technology provided in an embodiment of the present invention, implementation method is simple, can be compatible with existing agreement framework.
In order to realize the major function of DRC modules, the data structure of DRC data is devised.
As shown in figure 4, in a preferred embodiment, data distribution recombinates the data knot of protocol Data Unit DRC-PDU
The head of structure includes：
The sequence number and reserved field R of the data distribution recombination protocol Data Unit DRC-PDU, sequence number and reserved field R
Length it is variable；
In distribution procedure, the reserved field R that setting data distribution recombinates protocol Data Unit DRC-PDU is 0, is receiving weight
During group, ignore reserved field R.
The length of sequence number DRC SN can be configured by RRC InterCell MAC, only as sequence number DRC
When the length of SN is more than 0, DRC functions are enabled；When the length of sequence number DRC SN is 0, DRC functions are closed, at this point, i.e. DRC
Transparent transmission is only carried out, any processing is not done to data.
In a preferred embodiment, data distribution recombination module goes adaptation reserved field according to the length of sequence number DRC SN
Length shared by R ensures that the length of overall data structure meets 8*N bit, N=0,1,2,3 ..., such as configuration sequence number
DRC SN length is 6bit, then the length of R is adapted to 2bit accordingly.
As shown in figure 4, the head of DRC data includes：Sequence number (the DRC SN, Data of data distribution recombination data
Reordering Control Sequence Number) and reserved field R (Reserved)；Sequence number DRC SN indicate to correspond to
The sequence number of DRC PDU, R are reserved field, and it is 0 that reserved field R, which is arranged, in transmitting terminal, and receiving terminal ignores the reserved field.Wherein, DRC SN
It is variable with the length of R, it is not limited to length shown in Fig. 4, but to ensure that the length of overall data structure is 8*N bit, N=
0,1,2,3……。
In a preferred embodiment, data distribution recombination module is additionally operable in distribution procedure, as transmitting terminal, root
According to the instruction of minizone MAC, the same data distribution recombination protocol Data Unit DRC-PDU to eat dishes without rice or wine will be sent to and be encapsulated as one
Group, the reserved field R that this group of data distribution recombination protocol Data Unit DRC-PDU is arranged is 0, and assigns identical sequence number.
In a preferred embodiment, data distribution recombination module is additionally operable in regrouping process, as receiving terminal, from
Difference eats dishes without rice or wine to receive the data point that radio link control concentrates point module and radio link control remote end module to send
Hair recombination protocol Data Unit DRC-PDU；
Data distribution recombination protocol Data Unit DRC-PDU is parsed, data distribution recombination agreement number is obtained
According to the serial number and data distribution de-fragmentation service data cell DRC-SDU of cells D RC-PDU, ignore reserved field R；
The data distribution de-fragmentation service data cell DRC-SDU is ranked up according to sequence number；
The data distribution de-fragmentation service data cell DRC-SDU will be delivered to Packet Data Convergence Protocol in sequence
Module.
Data distribution recombination module is also known as DRC entities, and Packet Data Convergence Protocol module is also known as PDCP entities.Such as figure
Shown in 5, DRC entities are located at the lower layer of PDCP entities, the upper layer of RLC entities as an independent protocol entity.DRC entities are logical
A SAP connected between higher layer PDCP (Service Access Point) is crossed to receive data cell DRC-SDU.
As shown in figure 5, DRC entities have one-to-one relationship with PDCP entities.
One PDCP entity corresponds to a DRC entity.DRC entities are packaged the DRC-SDU received to obtain DRC-
PDU is sent to RLC entities；And the DRC-PDU received from bottom is subjected to parsing sequence, it is submitted to PDCP entities.
As shown in figure 5, a DRC entity can correspond to one or more RLC entity, RLC is physically located at Radio Link
Control protocol layer (RLC) provides segmentation and re-transmission business for user and control data.
When a DRC entity only corresponds to a RLC entity, DRC entities carry out transparent transmission to the data received, i.e., do not do
Any processing directly carries out the distribution of data and submits.
When a DRC entity corresponds to multiple RLC entities, when sending data, DRC entities will be to the DRC that receives
SDU, which is packaged, is then forwarded to RLC entities.When receiving data, DRC entities will parse the DRC PDU received, row
Sequence is submitted to PDCP entities again.
It is closed with the concrete configuration of PDCP entities and RLC entities as shown in figure 3, RRC/InterCell MAC are responsible for DRC entities
System, it is to execute configuration task by RRC or InterCell MAC not limit specifically here.
InterCell MAC are scheduled the data transmission and reception of DRC entities.
When distributing data, InterCell MAC are according to the channel quality and QCI on each eat dishes without rice or wine, the ginsengs such as network load
Number is scheduled judgement, and instruction DRC entities need the data volume in each upper transmission of eating dishes without rice or wine.When receiving data, DRC entities will be more
A RLC reception data cases physically notify InterCell MAC, and one be scheduled as InterCell MAC is defeated
Enter parameter.Can be periodic advertisement can also be event triggering reinform.Such as when the data receiver on some is eated dishes without rice or wine is one
When interior appearance of fixing time is abnormal, InterCell MAC are notified.
When transmission data, PDCP PDU are directly sent to DRC entities by PDCP entities, and DRC entities receive PDCP transmissions
After DRC-SDU, DRC-SDU is encapsulated as DRC-PDU by DRC entities；
If DRC entities have corresponded to multiple RLC entities, DRC entities are indicated according to the scheduling of InterCell MAC will
DRC-PDU is put into corresponding buffer, when the data volume in buffer meets the scheduling instruction of InterCell MAC, DRC
Data in the buffer are packaged by entity, and corresponding RLC entities are distributed to after assigning identical sequence number.Otherwise, DRC
Entity carries out transparent transmission to the PDCP PDU received.
When receiving data, if DRC entities have corresponded to multiple RLC entities, DRC entities by the DRC PDU received into
Row parsing, is ranked up, and DRC SDU are sequentially delivered to PDCP entities according to DRC serial numbers.Otherwise, DRC entities are to receiving
DRC PDU carry out transparent transmission.
In a preferred embodiment, data distribution recombination module is additionally operable to execution and re-establishes program, re-establishing program
In, will not yet the data distribution that point module and radio link control remote end module are sent be concentrated to radio link control
Protocol Data Unit DRC-PDU is recombinated to abandon, and, it would be desirable to the data distribution weight submitted to Packet Data Convergence Protocol module
Group service data unit DRC-SDU is submitted in sequence, and associated counter is reset.In the technical field of the present invention,
It re-establishes and refers to, the transmission channel needed for transmission data units has existed, and currently needs to answer existing transmission channel
With, and need to empty original data cell and then transmit new data cell, this process is the process re-established.
The embodiment of the present invention provides a kind of protocol stack apparatus, as shown in Figure 1, including：
Radio link control concentrates point module, for receiving the data distribution recombination from data distribution recombination module
Service data unit DRC-SDU, and send radio link control service data unit RLC-SDU；
Radio link control remote end module, for receiving the data distribution recombination clothes from data distribution recombination module
Be engaged in data cell DRC-SDU, and sends radio link control service data unit RLC-SDU；
Data distribution recombination module is used in regrouping process, from radio link control concentration point module and wirelessly
Link Control Protocol remote end module receives data distribution recombination protocol Data Unit DRC-PDU, is recombinated to the data distribution
Protocol Data Unit DRC-PDU is recombinated to obtain data distribution de-fragmentation service data cell DRC-SDU, by the data distribution
De-fragmentation service data cell DRC-SDU is submitted to Packet Data Convergence Protocol module in sequence；And
In distribution procedure, data distribution de-fragmentation service data cell is received from the Packet Data Convergence Protocol module
DRC-SDU concentrates point module and the distribution pair of radio link control remote end module to each radio link control
The data distribution recombination protocol Data Unit DRC-PDU answered；
Minizone MAC module, the length of the sequence number DRC SN for configuration packet data convergence protocol data cell will
The length of the sequence number DRC SN is sent to data distribution recombination module, for the data distribution recombination module according to the sequence
The length of row number sends the Packet Data Convergence Protocol data cell.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment
A particular feature, structure, or characteristic includes at least one embodiment of the present invention.Therefore, occur everywhere in the whole instruction
" in one embodiment " or " in one embodiment " not necessarily refer to identical embodiment.In addition, these specific feature, knots
Structure or characteristic can in any suitable manner combine in one or more embodiments.
It should be understood that the terms "and/or", only a kind of incidence relation of description affiliated partner, expression can deposit
In three kinds of relationships, for example, A and/or B, can indicate：Individualism A exists simultaneously A and B, these three situations of individualism B.
In addition, character "/" herein, it is a kind of relationship of "or" to typically represent forward-backward correlation object.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (11)
1. a kind of method of data distribution recombination, which is characterized in that be applied to data distribution reconstruction unit, method includes：
In regrouping process, point module and radio link control remote end module is concentrated to receive from radio link control
Data distribution recombinates protocol Data Unit DRC-PDU, is recombinated to data distribution recombination protocol Data Unit DRC-PDU
Obtain data distribution de-fragmentation service data cell DRC-SDU, by the data distribution de-fragmentation service data cell DRC-SDU according to
Sequential delivery gives Packet Data Convergence Protocol module；And
In distribution procedure, data distribution de-fragmentation service data cell DRC- is received from the Packet Data Convergence Protocol module
SDU concentrates point module and the distribution of radio link control remote end module corresponding to each radio link control
Data distribution recombinates protocol Data Unit DRC-PDU.
2. the method as described in claim 1, which is characterized in that data distribution recombinates the data of protocol Data Unit DRC-PDU
The head of structure includes：
The sequence number and reserved field R of the data distribution recombination protocol Data Unit DRC-PDU, the length of sequence number and reserved field R
Degree is variable；
In distribution procedure, the reserved field R that setting data distribution recombinates protocol Data Unit DRC-PDU is 0, is recombinated in reception
Cheng Zhong ignores reserved field R.
3. method as claimed in claim 2, which is characterized in that each radio link control concentrate point module and
Radio link control remote end module is distributed corresponding data distribution recombination protocol Data Unit DRC-PDU and is specifically included：
According to the instruction of minizone MAC, the same data distribution recombination protocol Data Unit DRC-PDU encapsulation eated dishes without rice or wine will be sent to
It it is one group, the reserved field R that this group of data distribution recombination protocol Data Unit DRC-PDU is arranged is 0, and assigns identical sequence
Number.
4. method as claimed in claim 2, which is characterized in that data distribution recombination protocol Data Unit DRC-PDU
It is recombinated to obtain data distribution de-fragmentation service data cell DRC-SDU and be specifically included：
Point module and radio link control remote end module is concentrated to send from different reception radio link controls of eating dishes without rice or wine
Data distribution recombinates protocol Data Unit DRC-PDU；
Data distribution recombination protocol Data Unit DRC-PDU is parsed, data distribution recombination protocol data list is obtained
The serial number and data distribution de-fragmentation service data cell DRC-SDU of first DRC-PDU, ignores reserved field R；
The data distribution de-fragmentation service data cell DRC-SDU is ranked up according to sequence number；
The data distribution de-fragmentation service data cell DRC-SDU will be delivered to Packet Data Convergence Protocol mould in sequence
Block.
5. method as claimed in claim 2, which is characterized in that further include re-establishing program：
Will not yet the data point that point module and radio link control remote end module are sent be concentrated to radio link control
Hair recombination protocol Data Unit DRC-PDU is abandoned, and, it would be desirable to the data distribution submitted to Packet Data Convergence Protocol module
De-fragmentation service data cell DRC-SDU is submitted in sequence, and associated counter is reset.
6. a kind of device of data distribution recombination, which is characterized in that including：
Radio link control concentrates point module, for receiving the data distribution de-fragmentation service from data distribution recombination module
Data cell DRC-SDU, and send radio link control service data unit RLC-SDU；
Radio link control remote end module, for receiving the data distribution de-fragmentation service number from data distribution recombination module
According to cells D RC-SDU, and send radio link control service data unit RLC-SDU；
Data distribution recombination module, in regrouping process, point module and Radio Link to be concentrated from radio link control
Control protocol remote end module receives data distribution recombination protocol Data Unit DRC-PDU, and agreement is recombinated to the data distribution
Data cell DRC-PDU is recombinated to obtain data distribution de-fragmentation service data cell DRC-SDU, and the data distribution is recombinated
Service data unit DRC-SDU is submitted to Packet Data Convergence Protocol module in sequence；And
In distribution procedure, data distribution de-fragmentation service data cell DRC- is received from the Packet Data Convergence Protocol module
SDU concentrates point module and the distribution of radio link control remote end module corresponding to each radio link control
Data distribution recombinates protocol Data Unit DRC-PDU.
7. device as claimed in claim 6, which is characterized in that data distribution recombinates the data of protocol Data Unit DRC-PDU
The head of structure includes：
The sequence number and reserved field R of the data distribution recombination protocol Data Unit DRC-PDU, the length of sequence number and reserved field R
Degree is variable；
In distribution procedure, the reserved field R that setting data distribution recombinates protocol Data Unit DRC-PDU is 0, is recombinated in reception
Cheng Zhong ignores reserved field R.
8. device as claimed in claim 7, which is characterized in that
Data distribution recombination module, is additionally operable in distribution procedure, will be sent to according to the instruction of minizone MAC as transmitting terminal
The same data distribution recombination protocol Data Unit DRC-PDU to eat dishes without rice or wine is encapsulated as one group, this group of data distribution recombination is arranged
The reserved field R of protocol Data Unit DRC-PDU is 0, and assigns identical sequence number.
9. device as claimed in claim 7, which is characterized in that
Data distribution recombination module, is additionally operable in regrouping process, as receiving terminal, eats dishes without rice or wine to receive wireless spread-spectrum technology from difference
The data distribution recombination protocol Data Unit DRC- that agreement centrostigma module and radio link control remote end module are sent
PDU；
Data distribution recombination protocol Data Unit DRC-PDU is parsed, data distribution recombination protocol data list is obtained
The serial number and data distribution de-fragmentation service data cell DRC-SDU of first DRC-PDU, ignores reserved field R；
The data distribution de-fragmentation service data cell DRC-SDU is ranked up according to sequence number；
The data distribution de-fragmentation service data cell DRC-SDU will be delivered to Packet Data Convergence Protocol mould in sequence
Block.
10. device as claimed in claim 6, which is characterized in that
Data distribution recombination module is additionally operable to execution and re-establishes program, will be not yet to wireless spread-spectrum technology in re-establishing program
The data distribution recombination protocol Data Unit DRC-PDU that agreement centrostigma module and radio link control remote end module are sent
Abandon, and, it would be desirable to the data distribution de-fragmentation service data cell DRC-SDU submitted to Packet Data Convergence Protocol module by
According to sequentially being submitted, and associated counter is reset.
11. a kind of protocol stack apparatus, which is characterized in that including the radio link control in claim 6-10 any one
Concentrate point module, radio link control remote end module and data distribution recombination module；And
Minizone MAC module, the length of the sequence number DRC SN for configuration packet data convergence protocol data cell will be described
The length of sequence number DRC SN is sent to data distribution recombination module, for the data distribution recombination module according to the sequence number
Length send the Packet Data Convergence Protocol data cell.
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