CN108282269B - 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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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, it include: 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 functional 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 for particularly relating to a kind of data distribution recombination are set
It is standby.
Background technique
The wireless network architecture that in 5G network there is ideal and non-ideal forward pass (Fronthaul) transmission network to coexist.
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 module.
Summary of the invention
Technical problems to be solved of the embodiment of the present invention are to provide the method, apparatus and protocol stack of a kind of data distribution recombination
Equipment, to data distribution recombination DRC functional module 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: to concentrate point module and wireless spread-spectrum technology from radio link control in regrouping process
Agreement remote end module receives data distribution recombination protocol Data Unit DRC-PDU, recombinates protocol data 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 eated dishes without rice or wine will be sent to and recombinate protocol Data Unit DRC-PDU
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 come recombinates 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, further include re-establishing program:
The number that not yet point module and radio link control remote end module will be concentrated to send to radio link control
It is abandoned according to distribution recombination protocol Data Unit DRC-PDU, and, the data that needs are 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, comprising:
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, recombinates 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 also used 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 also used in regrouping process, as receiving end, 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 also used to execution and re-establishes program, re-establishing program
In, the data distribution of point module and the transmission of radio link control remote end module will be not yet concentrated to radio link control
Protocol Data Unit DRC-PDU is recombinated to abandon, and, the data distribution weight that needs are 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 of the functional module recombinated to data distribution and configuration are defined, and
Implementation method is simple, can be compatible with existing agreement framework.
Detailed description of the invention
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 diagram 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 embodiment
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 by logic channel with MAC layer.Each logic channel of each UE has a RLC entity
(RLC entity).The data cell that RLC entity is 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 entity is 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 entity is configured by RRC, and there are three types of modes: transparent mode according to type of service
(TM), Unacknowledged Mode (UM), affirmation mode (AM).For transparent mode and Unacknowledged Mode, RLC entity be it is unidirectional, respectively
From a sending entity and a receiving entity is possessed, it is independently completed sending and receiving for data；And for affirmation mode,
RLC entity is two-way.Although an only entity is divided into receiving side and sending side and connects 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 to data distribution recombination based in distributed access network agreement framework；It defines
Data distribution recombinates the method and required data format of (DRC, Data Reordering Control).
For the wireless network architecture that ideal and non-ideal forward pass transmission network coexists in 5G network, proposes and be adaptive to
The protocol stack architecture of planar network architecture is accessed, is increased data distribution recombination module (DRC) in protocol stack architecture, introducing devises data
Distribute recombination function.As shown in Figure 1, the major function of data distribution recombination module is:, will be from multiple when receiving recombination data
The upper received data of RLCcenter/RLCremote are recombinated, be submitted in order Packet Data Convergence Protocol (PDCP,
Packet Data Convergence Protocol)；When sending 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, being applied to data distribution recombinates mould
Block, comprising:
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 the structure of data distribution recombination DRC module, 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 module, 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 indicates 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 the reserved field is ignored in receiving end.Wherein, DRC SN
It is variable with the length of R, it is not limited to length shown in Fig. 4, but to guarantee 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 eated dishes without rice or wine will be sent to and recombinate protocol Data Unit DRC-PDU
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 come recombinates 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 technical field of the invention, triggering is connected 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 need 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.
Program is re-established the connection, commonly both linkers is established and is directed to distribution procedure and regrouping process, re-establishes journey
In sequence, bottom random ordering is allowed to submit data cell, 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):
The number that not yet point module and radio link control remote end module will be concentrated to send to radio link control
It is abandoned according to distribution recombination protocol Data Unit DRC-PDU, and, the data that needs are 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 if current data distribution recombination module is in radio link control centrostigma mould
During the data distribution recombination protocol Data Unit DRC-PDU that block and radio link control remote end module are sent, then
Not sent data distribution 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 for submitting data distribution de-fragmentation service data cell DRC-SDU to Packet Data Convergence Protocol module
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, comprising:
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, recombinates 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 module, 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 greater than 0, DRC function is enabled；When the length of sequence number DRC SN is 0, DRC function is 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 guarantees that the length of overall data structure meets 8*N bit, N=0,1,2,3 ..., such as the sequence number of configuration
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 indicates 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 the reserved field is ignored in receiving end.Wherein, DRC SN
It is variable with the length of R, it is not limited to length shown in Fig. 4, but to guarantee 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 also used 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 also used in regrouping process, as receiving end, 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 entity, and Packet Data Convergence Protocol module is also known as PDCP entity.Such as figure
Shown in 5, DRC entity is located at the lower layer of PDCP entity, the upper layer of RLC entity as an independent protocol entity.DRC entity is logical
SAP connected between higher layer PDCP (Service Access Point) is crossed to receive data cell DRC-SDU.
As shown in figure 5, DRC entity and PDCP entity have one-to-one relationship.
The corresponding DRC entity of one PDCP entity.DRC entity is packaged the DRC-SDU received to obtain DRC-
PDU is sent to RLC entity；And the DRC-PDU received from bottom is subjected to parsing sequence, it is submitted to PDCP entity.
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 entity carries out transparent transmission to the data received, i.e., does 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 entity will be to the DRC received
SDU, which is packaged, is then forwarded to RLC entity.When receiving data, DRC entity will parse the DRC PDU received, row
Sequence is submitted to PDCP entity again.
As shown in figure 3, RRC/InterCell MAC is responsible for DRC entity and PDCP entity and the concrete configuration of RLC entity is closed
System, not limiting specifically here is to execute configuration task by RRC or InterCell MAC.
InterCell MAC is scheduled the data transmission and reception of DRC entity.
When distributing data, InterCell MAC is according to the channel quality and QCI on each eat dishes without rice or wine, the ginseng such as network load
Number is scheduled judgement, and instruction DRC entity needs the data volume in each upper transmission of eating dishes without rice or wine.When receiving data, DRC entity 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 be also possible to 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 is notified.
When sending data, PDCP PDU is directly sent to DRC entity by PDCP entity, and DRC entity receives PDCP transmission
After DRC-SDU, DRC-SDU is encapsulated as DRC-PDU by DRC entity；
If DRC entity has corresponded to multiple RLC entities, DRC entity is 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, are distributed to corresponding RLC entity after assigning identical sequence number.Otherwise, DRC
Entity carries out transparent transmission to the PDCP PDU received.
When receiving data, if DRC entity has corresponded to multiple RLC entities, DRC entity by the DRC PDU received into
Row parsing, is ranked up, and DRC SDU is sequentially delivered to PDCP entity according to DRC serial number.Otherwise, DRC entity is to receiving
DRC PDU carry out transparent transmission.
In a preferred embodiment, data distribution recombination module is also used to execution and re-establishes program, re-establishing program
In, the data distribution of point module and the transmission of radio link control remote end module will be not yet concentrated to radio link control
Protocol Data Unit DRC-PDU is recombinated to abandon, and, the data distribution weight that needs are submitted to Packet Data Convergence Protocol module
Group service data unit DRC-SDU is submitted in sequence, and associated counter is reset.In technical field of the invention,
It re-establishes and refers to, 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, comprising:
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, recombinates 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 is included 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 features, knot
Structure or characteristic can combine in any suitable manner in one or more embodiments.
It should be understood that the terms "and/or", only a kind of incidence relation for describing 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, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
The above is a 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, recombinates 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；Data distribution recombinates the head of the data structure of protocol Data Unit DRC-PDU
Portion includes: the sequence number and reserved field R of data distribution recombination protocol Data Unit DRC-PDU, sequence number and reserved field R's
Length is variable；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 further include:
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 according to 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 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 according to claim 2, which is characterized in that recombinate protocol Data Unit DRC-PDU to the data distribution
It is recombinated to obtain data distribution de-fragmentation service data cell DRC-SDU and be specifically included:
Eating dishes without rice or wine to receive radio link control from difference concentrates point module and radio link control remote end module to send
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 according to claim 2, which is characterized in that further include re-establishing program:
The data point that not yet point module and radio link control remote end module will be concentrated to send to radio link control
Hair recombination protocol Data Unit DRC-PDU is abandoned, and, the data distribution that needs are 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 characterized by comprising
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, for concentrating point module and Radio Link from radio link control in regrouping process
Control protocol remote end module receives data distribution recombination protocol Data Unit DRC-PDU, recombinates agreement 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；Data distribution recombinates protocol data list
The head of the data structure of first DRC-PDU includes: sequence number and the guarantor of the data distribution recombination protocol Data Unit DRC-PDU
Stay domain R, the length of sequence number and reserved field R are variable；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 the data distribution recombination module is also used in distribution procedure
In, the reserved field R that setting data distribution recombinates protocol Data Unit DRC-PDU is 0, in receiving regrouping process, ignores the guarantor
Stay domain R.
8. device as claimed in claim 7, which is characterized in that
Data distribution recombination module, is also used in distribution procedure, will be sent to as transmitting terminal according to the instruction of minizone MAC
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 also used in regrouping process, as receiving end, eats dishes without rice or wine to receive wireless spread-spectrum technology from difference
The data distribution that agreement centrostigma module and radio link control remote end module are sent 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.
10. device as claimed in claim 6, which is characterized in that
Data distribution recombination module is also used to execution and re-establishes program, will be not yet to wireless spread-spectrum technology in re-establishing program
The data distribution that agreement centrostigma module and radio link control remote end module are sent recombinates protocol Data Unit DRC-PDU
Abandon, and, will need the data distribution de-fragmentation service data cell DRC-SDU that is 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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