CN106358311B - The implementation method of RLC and MAC layer in a kind of mobile communication system - Google Patents
The implementation method of RLC and MAC layer in a kind of mobile communication system Download PDFInfo
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- CN106358311B CN106358311B CN201610837842.1A CN201610837842A CN106358311B CN 106358311 B CN106358311 B CN 106358311B CN 201610837842 A CN201610837842 A CN 201610837842A CN 106358311 B CN106358311 B CN 106358311B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/02—Data link layer protocols
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Abstract
The present invention relates to the implementation methods of RLC and MAC layer in a kind of GMR system, a kind of split RLC/MAC header is proposed to complete in rlc layer and MAC layer, in down direction, MAC layer receives the RLC/MAC header data for carrying out automatic network, if it is control header, then MAC layer parses MAC layer message data in the header, and parsing result is reported to rlc layer.If it is datagram header, then MAC layer will parse the data of RLC/MAC header, which is reported to rlc layer, while report the header fields content in parsing RLC/MAC header.In up direction, if MAC layer needs to send RLC/MAC control header, MAC layer controls the information of information and RLC/MAC header fields to rlc layer request rlc layer.If MAC layer needs the head that sends datagram, MAC layer requests to send the content of RLC data and RLC/MAC header fields to rlc layer.
Description
Technical field
The invention belongs to GMR mobile terminal devices (referred to as: MES) to realize technical field, be related to a kind of mobile communication system
The implementation method of middle RLC and MAC layer, for solving the exploitation and design of GMR mobile terminal agreement RLC/MAC on the middle and senior level.
Background technique
In fixed statellite communication system (referred to as: GMR), air interface is in (the letter of existing Digital Radio mobile communication system
Claim: GSM) on the basis of develop, the air interface of GMR is as shown in Figure 1.Fig. 1 is exactly the movement of current generalized air interface
Communication protocol architecture, Non-Access Stratum (referred to as: NAS layers) are mainly responsible for processing core net related content, this part and access net
It is not directly dependent upon.Wireless heterogeneous networks (referred to as: RRC) are mainly responsible for distribution, use, application, the modification of radio resource, and
Access net related mobile management, system message interpret, such as carry out cell update, GRA renewal process, cell selection and again
Choosing.Wireless spread-spectrum technology (referred to as: RLC) is mainly responsible for the reliable transmission of data between network and terminal, is asked using autonomous retransmission
Seek the correctness for (referred to as: ARQ) guaranteeing data transmission.Media access control (referred to as: MAC) is main to complete high level data or signaling
To the mapping of physical layer, furthermore MAC layer is also responsible for the wireless resource management and control of processing Packet data service.Packet data is converged
Poly- agreement (referred to as: PDCP) is main to complete the processing of grouping busihess data to RLC.
In Fig. 1, RLC module therein specifically completes the function of following table 1:
The function of RLC module in table 1:GMR system
MAC layer therein specifically completes the function of following table 2:
The function of MAC layer in table 2:GMR system
According to the peer layer design principle of GMR agreement, terminal rlc layer and network side RLC belong to a pair of of agreement peer layer, eventually
End MAC layer and network side MAC layer belong to another pair of agreement peer layer, and according to the description of Tables 1 and 2, rlc layer and MAC layer are only
Vertical to complete different functions, RLC and MAC have oneself independent control flow.
But in the description of GMR standard, rlc layer and MAC layer will share a datagram header, referred to as RLC/MAC header.According to
RLC/MAC agreement (referred to as: GMR44.160) of the satellite mobile communication system that european telecommunication alliance releases retouches
It states.Rlc layer and MAC layer share RLC/MAC header, wherein the dedicated RLC/MAC on road logic channel (referred to as: DACCH) is reported
Head has 4 major class, they are DACCH downlink RLC/MAC datagram header, DACCH downlink RLC/MAC control report respectively
Head, DACCH uplink RLC/MAC datagram header, DACCH uplink RLC/MAC control header.DACCH logic channel master
It is used for transmission Signaling Radio Bearer (referred to as: SRB2) data and MAC layer control message.
Table 3:DACCH downlink RLC/MAC datagram header
Table 4:DACCH downlink RLC/MAC controls header
Table 5:DACCH uplink RLC/MAC datagram header
Table 6:DACCH uplink RLC/MAC controls header
| Octet1 | PayloadType=01 | PDULength(4-0) | E |
| Octet2 | PDULength(10-5) | Spare | E |
In table 3, table 4, table 5 and table 6, wherein RLC member fields specific physical meaning in RLC/MAC header is as follows:
ITR terminates request immediately: the bit is present in uplink header, when the bit is arranged, is used to indicate MES and asks
It asks and terminates current TBF immediately, without " waiting " period managed by timer T3201.
UD unmet demand: the field is used to indicate the number for waiting the RLC block sent from the side MES.If there is no upper
Row TBF, UD should be set as " 0 ".The value of UD is defined as the number of the RLC block not yet sent plus the number for waiting the RLC block retransmitted
The sum of.UD does not include the number that those have had sent and have waited RLC block to be confirmed.
FSPB is finally recovered block: when the field is arranged, indicating that current load is the final separation for the RLC block being originally sent
Block (FSPB).When the 6th byte exists and RLC block does not separate, FSPB must be set as " 1 ", and SPBN must be set as " 00 ".
SPBN fragmented blocks sequence number: fragmented blocks sequence-number field is present in optional 6th byte, when at one more preferably
MCS scheme on occur retransmit and need be segmented to be applicable in new accidental loads when, use the sequence number.By using BSN,
SPBN and FSPB, receiving end can rebuild the RLC block relevant to BSN indicated by header being originally sent.
The final block pointer section of FBI: final block instruction (FBI) bit indication current RLC data block is downlink TBF
The last one RLC data block.
RLPS simplifies: being used to indicate the back-page length that a upper layer PDU is segmented in current RLC data block.
LPS field: it is used to indicate the back-page length for being present in that a upper layer PDU is segmented in RLC data block.Value
" 0 " is used to indicate new upper layer PDU and starts from RLC data block, i.e., there is no the upper layers before any in RLC data block
The segmentation of PDU.
BSN block sequence-number field: in TBF, block sequence number (BSN) field carries the absolute sequence of each RLC data block
Arrange No. BSN (using sequence number space SNS as mould) (1024).BSN length is 10 bits and encodes in a binary fashion that range is
0~1023.
According to GMR agreement process, RLC/MAC header fields given above are all to belong to rlc layer, are passed with the data of RLC
Defeated and control process is closely bound up, needs to provide in RLC/MAC header.
Secondly, in the autonomous retransmission confirmation (referred to as: ARQ) of RLC, the confirmation (referred to as: ACK) of RLC and unacknowledged information
(abbreviation NACK) is transmitted in MAC layer message.Such as up direction MAC layer message GMPRS Packet Downlink
Ack/Nack, Packet Downlink Ack/Nack and Packet DCH Downlink Ack/Nack carry the RLC of MES
Layer is sent to the ARQ confirmation message of network rlc layer.Down direction MAC layer message Packet Uplink Ack/Nack,
Packet Uplink Ack/Nack type 2, Packet DCH Uplink Ack/Nack carry network rlc layer and are sent to
The confirmation message of the rlc layer of terminal MES.Due to these message using CSN.1 encode, so the assembling of these MAC layer message and
Parsing is realized by MAC layer.
In specific MES terminal protocol software realization, since rlc layer and MAC layer share a RLC/MAC header, institute
Can retain original GMR agreement framework, rlc layer and MAC layer be placed in the same module during MES terminal is realized
It is realized.
But engineering design in this way has the following problems.
First: rlc layer and MAC layer are under the jurisdiction of different protocol layers, and every layer has oneself corresponding control flow, if will
RLC and MAC is realized in the same module, while needing to meet rlc layer and the respective control flow of MAC layer, increase RLC and
The complexity of MAC layer design.
Second: rlc layer and MAC layer are realized in the same module, have broken the layering principle of protocol software design, inconvenient
It is designed in software modularity, is not easy to carry out RLC and MAC layer stand-alone development and test, while also increasing later period code maintenance
And problem, the positioning difficulty of defect.
In view of the presence of problem above, the invention proposes a kind of methods that rlc layer and MAC layer carry out independent design, give
Go out and specifically how to have split RLC/MAC header, to meet the protocol requirement of rlc layer and MAC layer, while shared RLC/MAC header
Method.
Summary of the invention
In view of this, the purpose of the present invention is to provide the implementation method of RLC and MAC layer in a kind of mobile communication system,
Specifically include following technical solution:
The implementation method of RLC and MAC layer in a kind of mobile communication system, this method includes the following contents:
1) in down direction: MAC layer receives the RLC/MAC header data for carrying out automatic network, if the header data is control
Header processed, then MAC layer will parse MAC layer message data in RLC/MAC header, and parsing result is given by interlayer signal reporting
Rlc layer, simultaneously comprising the RLC/MAC header fields content in control header in the interlayer signal；If the header data is
Datagram header, then MAC layer will parse the data content of RLC/MAC header, and data content is reported to RLC and is handled, while on
Report the header fields content in MAC layer parsing RLC/MAC header；
2) in up direction: if MAC layer needs to send RLC/MAC control header, MAC layer requests to send to rlc layer
MAC layer need send rlc layer control information, after rlc layer receives, rlc layer to send MAC layer ARQ confirmation message, and
The content of RLC/MAC header fields is provided in interface signal；If MAC layer needs the head that sends datagram, MAC layer is to RLC
Layer instruction needs to send RLC data, and rlc layer will assemble RLC data and provide RLC/MAC to MAC layer, while in the interface signal
The content of header fields.
Further, it in down direction, between MAC layer and rlc layer, defines and reports DCH data block primitive MAC_DCH_
The DATA_IND and primitive MAC_PDCH_DATA_IND for reporting PDCH data block；
Wherein MAC_DCH_DATA_IND includes T_DownlinkDchBlkHead structure, which contains RLC/MAC
About the header information on DCH channel in layer；Specifically simplified block sequence number (referred to as: reducedBlkSeqNum), simplifies
Last block PDU size (referred to as: reducedLastPartSize), simplified radio bearer identification (referred to as: rrbId),
Members such as (abbreviations: fbi) are indicated with final block；
Wherein MAC_PDCH_DATA_IND includes T_DownlinkPdchBlkHead structure, which contains RLC/
About the header information on PDCH channel in MAC layer；Specifically unsolicited uplink allows (referred to as: uug), block sequence number
(referred to as: blkSeqNum), the size (referred to as: lastPartSize) of the last one upper layer PDU, final block instruction (referred to as:
Fbi), temporary flow identity symbol (referred to as: tfi), Signaling Radio Bearer mark (referred to as: srb), fragmented blocks sequence number (referred to as:
Spbn), it is finally recovered the members such as block (referred to as: fspb).
Further, between down direction, MAC layer and rlc layer, the RLC control info primitive transmitted on DCH is defined
The MAC_CTRL_DCH_DATA_IND and RLC transmitted on PDCH controls info primitive MAC_CTRL_PDCH_DATA_IND；
The member that wherein MAC_CTRL_DCH_DATA_IND primitive includes has: final confirmation mark (referred to as:
FinalAckIndication), start sequence number (referred to as: startingSequenceNum), sequence length (referred to as:
) and uncompressed bit table (referred to as: uncompressedBitmap) bitmapLen；
The member that wherein MAC_CTRL_PDCH_DATA_IND primitive includes has: final confirmation mark (referred to as:
FinalAckIndication), start sequence number (referred to as: startingSequenceNum), if enable compression bit table
(referred to as: compressBitmapFlag), sequence length (referred to as: bitmapLen), uncompressed bit table (referred to as:
UncompressedBitmap), starting position (referred to as: compressStartColorCode) and (letter of compression bit table are compressed
Claim: compressBitmap).
Further, it between up direction, MAC layer and rlc layer, defines RLC and sends DCH data block primitive MAC_DCH_
DATA_REQ and RLC sends the primitive MAC_PDCH_DATA_REQ of PDCH data block；
Wherein MAC_DCH_DATA_REQ primitive, the member which includes have: RLC send data block (referred to as:
MacDchDataBlk) and the message structure (referred to as: T_UplinkDchBlkHead) that needs of RLC/MAC header, in the knot
It contains: terminating immediately request (referred to as: itr) in structure, simplified block sequence number (referred to as: reducedBlkSeqNum) simplifies
The last one PDU size (referred to as: reducedLastPartSize), simplified radio bearer identification (referred to as: rrbId) with
And stall instruction (referred to as: stallInd)；
Wherein MAC_PDCH_DATA_REQ primitive, the member which includes have: RLC send data block (referred to as:
MacPdchDataBlk) and the message structure (referred to as: T_UplinkPdchBlkHead) that needs of RLC/MAC header, at this
It contains: terminating immediately request (referred to as: itr) in structure, block sequence number (referred to as: blkSeqNum), the last one PDU size
(referred to as: lastPartSize), unmet demand (referred to as: unsatisfedDemand), stall instruction (referred to as:
StallInd), temporary flow identity symbol (referred to as: tfi), Signaling Radio Bearer mark (referred to as: srb), (letter of fragmented blocks sequence number
Claim: spbn), final separation block (referred to as: fspb).
Further, between up direction, MAC layer and rlc layer, the RLC control information that RLC is transmitted on DCH is defined
The primitive MAC_CTRL_DCH_DATA_REQ and RLC transmitted on PDCH controls info primitive MAC_CTRL_PDCH_DATA_
REQ；
Wherein MAC_CTRL_DCH_DATA_REQ primitive, the member which includes have: final confirmation mark (referred to as:
FinalAckIndication), start sequence number (referred to as: startingSequenceNum), uncompressed bit table (referred to as:
uncompressedBitmap)；
Wherein MAC_CTRL_PDCH_DATA_REQ primitive, the member which includes have: final confirmation mark (referred to as:
FinalAckIndication), start sequence number (referred to as: startingSequenceNum), if enable compression mark (letter
Claim: compressBitmapFlag), uncompressed bit table (referred to as: uncompressedBitmap), compression bit table (referred to as:
compressBitmap)。
Further, the detailed process of this method is as follows:
S1: terminal receives the DCH data for carrying out automatic network；MAC layer receives the RLC/MAC header from physical layer, solves first
RLC/MAC header is analysed, if it is DCH datagram header, then MAC layer parses RLC/MAC data and rlc/mac layer header letter
Breath, is reported to rlc layer by MAC_DCH_DATA_IND；
S2: terminal receives the PDCH data for carrying out automatic network；MAC layer receives the RLC/MAC header from physical layer, solves first
RLC/MAC header is analysed, if it is PDCH datagram header, then MAC layer parses RLC/MAC data and rlc/mac layer header letter
Breath, is reported to rlc layer by MAC_PDCH_DATA_IND；
S3: network sends RLC confirmation message on DCH channel；MAC layer receives the RLC/MAC header from physical layer, first
RLC/MAC header is first parsed, controls header if it is DCH, then MAC layer parses control data, and carries out to control data
Parsing, is reported to rlc layer by MAC_CTRL_DCH_DATA_IND for the result of parsing；
S4: network sends RLC confirmation message on PDCH channel；MAC layer receives the RLC/MAC header from physical layer,
Parse RLC/MAC header first, control header if it is PDCH, then MAC layer parses control data, and to control data into
Row parsing, is reported to rlc layer by MAC_CTRL_PDCH_DATA_IND for the result of parsing；
S5: terminal sends RLC data packet on DCH channel；If there is DCH radio resource, rlc layer by data block and
The RLC parameter that data need is sent, MAC layer is sent to by MAC_DCH_DATA_REQ, RLC/MAC number is assembled by MAC layer
It is sent to physical layer later according to header；
S6: terminal sends RLC data packet on PDCH channel；If there is PDCH radio resource, rlc layer by data block with
And the RLC parameter that data need is sent, MAC layer is sent to by MAC_PDCH_DATA_REQ, RLC/MAC is assembled by MAC layer
Physical layer is sent to after datagram header；
S7: network request terminal sends RLC confirmation message on DCH channel；If network request terminal is on DCH channel
RLC confirmation message is sent, then rlc layer sends MAC layer by MAC_CTRL_DCH_REQ for RLC confirmation message, MAC will
The DCH control header that RLC confirmation message is assembled into RLC/MAC is sent to physical layer；
S8: network request terminal sends RLC confirmation message on PDCH channel；If network request terminal is in PDCH channel
Upper transmission RLC confirmation message, then rlc layer sends MAC layer, MAC by MAC_CTRL_PDCH_REQ for RLC confirmation message
Physical layer is sent by the PDCH control header that RLC confirmation message is assembled into RLC/MAC.
The beneficial effects of the present invention are: the present invention effectively splits the RLC/MAC of GMR system, completes RLC
Layer and MAC layer share the target of a RLC/MAC header, in specific design is realized, have effectively carried out the function of RLC and MAC layer
It can divide, so that RLC and MAC layer respectively complete the protocol processes of its peer layer, embody the modular of software design, side
GMR agreement exploitation and the later period test, maintenance and upgrade.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is the high-level communications protocol architecture diagram in mobile communication system；
Fig. 2 is PDCH or DCH transmitting uplink data schematic diagram；
Fig. 3 is the receive process of downlink data；
Fig. 4 is the confirmation treatment process to uplink data block；
Fig. 5 is the confirmation process to downlink data.
Specific embodiment
Below in conjunction with attached drawing, a preferred embodiment of the present invention will be described in detail.
In order to more clearly from illustrate application of the invention in GMR mobile terminal product, first for example, RLC/
How MAC module assembles uplink data block transmission, and terminal sends upstream data, and there are two types of modes, and one is send out on DCH channel
Upstream data is sent, another is to send upstream data on PDCH channel, since process flow is similar, then in a process
Explanation is described.Its software architecture is as shown in Figure 1, detailed process is as shown in Figure 2.
As shown, transmitting uplink data the following steps are included:
Step 1: terminal initiates data transmission procedure on PDCH or DCH channel.Terminal carries out random access procedure first,
Then network side is the radio resource of traffic assignments PDCH or DCH.Assignment (immediate immediately specifically can be used
Assignment) message, radio bearer establish (referred to as: RADIO BEARER SETUP) message, radio resource reconfiguration (referred to as:
RADIO BEARER RECONFIGURATION) message or cell update confirm (referred to as: CELL UPDATE CONFIRM)
Physical channel is then configured to MAC after RRC receives these radio-resource-configuration message by message, is reconfigured by MAC layer to object
Layer is managed, after down physical channel configuration is completed, physical layer then carries out data parsing on specified physical resource, and uses
MAC_PHY_PDCH_DATA_IND MAC_PHY_DCH_DATA_IND primitive periodically reports the data that parsing obtains
To MAC layer.
Step 2: for DCH channel, having a uplink scheduling information in every frame, after Physical Channel synchronization, MAC layer is in every frame
It requires to send uplink data block on DCH channel.If it is PDCH channel, then need when interpreting downlink RLC/MAC data block
Check that uplink state flags (referred to as: USF) determine whether there is uplink authorization；If there is uplink DCH or PDCH tune
Degree, MAC layer save scheduling information；
Step 3,4: determining the time for enabling ascending wireless resource block, after reaching wireless resource block enabling time, MAC layer
Start RLC and sends data procedures.
Step 5: when ascending wireless resource reaches, MAC calculates the length of this layer of control message, and the control that needs are sent
Message processed temporarily saves, while calculating the length for sending RLC data block, which is in MAC_STATUS_IND primitive
Datalen content.
For step 6,7:MAC layers of transmission MAC_STATUS_IND primitive to RLC module, which includes cell item datalen,
MAC layer requests RLC module, and this needs to send RLC data length.RLC module divides data after receiving as required, and passes through
MAC_PDCH_DATA_REQ primitive or MAC_DCH_DATA_REQ primitive send data to MAC layer, in MAC_PDCH_DATA_
In REQ primitive or MAC_DCH_DATA_REQ primitive, while containing the RLC letter that MAC layer assembling RLC/MAC header needs
Breath.
Step 8,9:MAC layers by the control message being previously saved and this RLC data assembling for receiving at RLC/MAC block,
Physical layer is sent to by MAC_PHY_PDCH_DATA_REQ or MAC_PHY_DCH_DATA_REQ.
Fig. 3 is the receive process of downlink data, and network sends downlink data, and there are two types of modes, and one is on DCH channel
Downlink data is sent, another is to send downlink data on PDCH channel, as shown, the receive process of downlink data are such as
Under:
Step 1: terminal carry out business procedure in, network radio resource establish or be reconfigured when, be assigned with DCH or
Person's PDCH channel resource, since DCH or PDCH physical resource is that fixed cycle property occurs over time and frequency, so physics
Layer monitors the data block of network transmission on corresponding channel after receiving configuration DCH or PDCH physical channel.
Step 2,3: physical layer parses the data in DCH or PDCH physical layer channel, and passes through MAC_PHY_PDCH_
DATA_IND MAC_PHY_DCH_DATA_IND primitive is reported to MAC layer.MAC layer parses RLC/MAC header first, wherein
It is control header or datagram header that bearer types (referred to as: PaylodeType) member, which specifies the RLC/MAC header,.
Step 4: being confirmed whether it is otherwise the control block of this layer enters step 7 if so, entering step 5
Step 5: if bearer types are control headers, MAC layer carries out message dissection process to the data block.
Step 6,7: if bearer types are datagram header, MAC layer parses interior in RLC/MAC datagram header first
Data in appearance and RLC/MAC datagram header, MAC layer use MAC_PDCH_DATA_IND or MAC_DCH_DATA_IND
Parsing result is reported to rlc layer, is performed corresponding processing by RLC module.
Fig. 4 be to the confirmation treatment process of uplink data block, as shown, the process the following steps are included:
Step 1: terminal carries out in business procedure, and network is assigned with when radio resource is established or is reconfigured
DCH PDCH channel resource, then terminal will send uplink RLC data block on uplink DCH or PDCH channel.
Step 2: network side is received from terminal uplink RLC/MAC datagram header, and data parsing is reported to network
The rlc layer of side, no matter whether network is properly received, network side will send Packet DCH Uplink Ack/Nack message or
2 message of Packet Uplink Ack/Nack Type carries out the confirmation of upstream data packet to terminal, and network side is first to the message
It is encoded, while being also likely to be present Time and Frequency Synchronization information in the message, be then assembled into complete downlink RLC/MAC control report
Head.
Step 3,4:MAC layer receive RLC/MAC control header, and parsing RLC/MAC first controls header, controls to RLC/MAC
The MAC layer message of header processed is parsed, while parsing the Time and Frequency Synchronization information of network request, and MAC layer will use MAC_
PHY_SYNC_CFG_REQ primitive is by Time and Frequency Synchronization information configuration to physical layer.
Step 5,6,7:MAC layers of parsing RLC/MAC control the RLC information in headers, and use MAC_CTRL_DCH_
DATA_IND or MAC_CTRL_PDCH_DATA_IND are reported to rlc layer.RLC module sends window to RLC using confirmation parameter
Mouth and some variables are updated.
Fig. 5 be to the confirmation process of downlink data, as shown, the process specifically includes the following steps:
Step 1: terminal carries out in business procedure, and network is assigned with when radio resource is established or is reconfigured
DCH PDCH channel resource.Physical layer monitors corresponding down channel, and receives DCH or the PDCH letter for carrying out automatic network
The downlink RLC data block in road.
Step 2: terminal monitoring down channel, physical layer, which receives, to be come on DCH the or PDCH physical channel of automatic network
Data block, then be reported to MAC layer using MAC_PHY_PDCH_DATA_IND or MAC_PHY_DCH_DATA_IND, and MAC is examined first
The unsolicited uplink looked into RLC/MAC datagram header allows (abbreviation: UUG) bit to show terminal if UUG=1
It need to be in the Ack/Nack confirmation message of next frame radio resource delivery time transmission rlc layer.
Step 3: when radio resource activationary time reaches, MAC layer sends MAC_STATUS_IND primitive and notifies RLC mould
Block indicates that MAC needs to obtain the parameter of RLC in primitive.
Step 4,5:RLC module obtain the confirmation parameter to downstream message after receiving, pass through MAC_CTRL_PDCH_
DATA_REQ primitive or MAC_CTRL_DCH_DATA_REQ primitive are sent to MAC layer.
Step 6,7:MAC layer receive MAC_CTRL_PDCH_DATA_REQ primitive or MAC_CTRL_DCH_ from rlc layer
After the confirmation parameter of DATA_REQ, Packet Downlink Ack/Nack message or Packet DCH are firstly generated
Then Downlink Ack/Nack message is assembled into uplink RLC/MAC control header, finally by MAC_PHY_PDCH_
DATA_REQ or MAC_PHY_DCH_DATA_REQ are sent to physical layer.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although on
It states preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be in form
Various changes are made to it in upper and details, without departing from claims of the present invention limited range.
Claims (6)
1. the implementation method of RLC and MAC layer in a kind of mobile communication system, it is characterised in that: this method includes the following contents:
1) in down direction: MAC layer receives the RLC/MAC header data for carrying out automatic network, if the header data is control report
Head, then MAC layer will parse MAC layer message data in RLC/MAC header, by parsing result by interlayer signal reporting to rlc layer,
Simultaneously comprising the RLC/MAC header fields content in control header in the interlayer signal；If the header data is datagram
Head, then MAC layer will parse the data content of RLC/MAC header, and data content is reported to RLC processing, while reporting MAC layer
Parse the header fields content in RLC/MAC header；
2) in up direction: if MAC layer needs to send RLC/MAC control header, MAC layer requests to send MAC layer to rlc layer
The rlc layer control information for needing to send；After rlc layer receives, rlc layer sends MAC layer ARQ confirmation message, and believes in interface
The content of RLC/MAC header fields is provided in number；If MAC layer needs the head that sends datagram, MAC layer is indicated to rlc layer
Need to send RLC data, rlc layer will assemble RLC data to MAC layer, while RLC/MAC header word is provided in the interface signal
The content of section.
2. the implementation method of RLC and MAC layer in a kind of mobile communication system according to claim 1, it is characterised in that:
Down direction defines between MAC layer and rlc layer and reports DCH data block primitive MAC_DCH_DATA_IND and report PDCH
The primitive MAC_PDCH_DATA_IND of data block；
Wherein MAC_DCH_DATA_IND includes T_DownlinkDchBlkHead structure, which contains in rlc/mac layer
About the header information on DCH channel；Specifically simplified block sequence number reducedBlkSeqNum, last block simplified
Size reducedLastPartSize, the simplified radio bearer identification rrbId of PDU, and final block indicate fbi member；
Wherein MAC_PDCH_DATA_IND includes T_DownlinkPdchBlkHead structure, which contains rlc/mac layer
In about the header information on PD CH channel；Specifically unsolicited uplink allows uug, block sequence number blkSeqNum,
The size lastPartSize of the last one upper layer PDU, final block indicate that fbi, temporary flow identity accord with tfi, Signaling Radio Bearer
Srb, fragmented blocks sequence number spbn are identified, block fspb member is finally recovered.
3. the implementation method of RLC and MAC layer in a kind of mobile communication system according to claim 2, it is characterised in that:
Down direction defines the RLC control info primitive MAC_CTRL_DCH_ transmitted on DCH between MAC layer and rlc layer
The DATA_IND and RLC transmitted on PDCH controls info primitive MAC_CTRL_PDCH_DATA_IND；
The member that wherein MAC_CTRL_DCH_DATA_IND primitive includes has: final confirmation mark finalAckIndication,
Start sequence number startingSequenceNum, sequence length bitmapLen and uncompressed bit table
uncompressedBitmap；
The member that wherein MAC_CTRL_PDCH_DATA_IND primitive includes has: final confirmation mark
FinalAckIndication starts sequence number startingSequenceNum, if enables compression bit table
CompressBitmapFlag, sequence length bitmapLen and uncompressed bit table uncompressedBitmap, compression are opened
Beginning position compressStartColorCode, compression bit table compressBitmap.
4. the implementation method of RLC and MAC layer in a kind of mobile communication system according to claim 3, it is characterised in that:
Up direction defines RLC and sends DCH data block primitive MAC_DCH_DATA_REQ and RLC hair between MAC layer and rlc layer
Send the primitive MAC_PDCH_DATA_REQ of PDCH data block；
Wherein MAC_DCH_DATA_REQ primitive, the member which includes have: the data block macDchDataBlk that RLC is sent,
And the message structure T_UplinkDchBlkHead that RLC/MAC header needs, it contains in this configuration: terminating request immediately
Itr, simplified block sequence number reducedBlkSeqNum, the last one the PDU size reducedLastPartSize simplified,
Simplified radio bearer identification rrbId and stall indicate stallInd；
Wherein MAC_PDCH_DATA_REQ primitive, the member which includes have: the data block that RLC is sent
The message structure T_UplinkPdchBlkHead that macPdchDataBlk and RLC/MAC header needs, is wrapped in this configuration
Contain: terminating request itr, block sequence number blkSeqNum, the last one PDU size lastPartSize, unmet demand immediately
UnsatisfedDemand, stall indicate that stallInd, temporary flow identity accord with tfi, and Signaling Radio Bearer identifies srb, fragmented blocks
Sequence number spbn is finally recovered block fspb.
5. the implementation method of RLC and MAC layer in a kind of mobile communication system according to claim 4, it is characterised in that:
Up direction defines the RLC control info primitive MAC_CTRL_ that RLC is transmitted on DCH between MAC layer and rlc layer
The DCH_DATA_REQ and RLC transmitted on PDCH controls info primitive MAC_CTRL_PDCH_DATA_REQ；
Wherein MAC_CTRL_DCH_DATA_REQ primitive, the member which includes have: final confirmation mark
FinalAckIndication starts sequence number startingSequenceNum, uncompressed bit table
uncompressedBitmap；
Wherein MAC_CTRL_PDCH_DATA_REQ primitive, the member which includes have: final confirmation mark
FinalAckIndication starts sequence number startingSequenceNum, if enables compression mark
CompressBitmapFlag, uncompressed bit table uncompressedBitmap, compression bit table compressBitmap.
6. the implementation method of RLC and MAC layer in a kind of mobile communication system according to claim 5, it is characterised in that: should
The detailed process of method is as follows:
S1: terminal receives the DCH data for carrying out automatic network, and MAC layer receives the RLC/MAC header from physical layer, parses first
RLC/MAC header, if it is DCH datagram header, then MAC layer parses RLC/MAC data and rlc/mac layer header information,
Rlc layer is reported to by MAC_DCH_DATA_IND；
S2: terminal receives the PDCH data for carrying out automatic network；MAC layer receives the RLC/MAC header from physical layer, parses first
RLC/MAC header, if it is PDCH datagram header, then MAC layer parses RLC/MAC data and rlc/mac layer header information,
Rlc layer is reported to by MAC_PDCH_DATA_IND；
S3: network sends RLC confirmation message on DCH channel；MAC layer receives the RLC/MAC header from physical layer, solves first
It analyses RLC/MAC header, controls header if it is DCH, then MAC layer parses control data, and parses to control data,
The result of parsing is reported to rlc layer by MAC_CTRL_DCH_DATA_IND；
S4: network sends RLC confirmation message on PDCH channel；MAC layer receives the RLC/MAC header from physical layer, first
RLC/MAC header is parsed, controls header if it is PDCH, then MAC layer parses control data, and solves to control data
Analysis, is reported to rlc layer by MAC_CTRL_PDCH_DATA_IND for the result of parsing；
S5: terminal sends RLC data packet on DCH channel；If there is DCH radio resource, rlc layer is by data block and transmission
The RLC parameter that data need, is sent to MAC layer by MAC_DCH_DATA_REQ, is assembled into rlc/mac layer data by MAC layer
Physical layer is sent to after header；
S6: terminal sends RLC data packet on PDCH channel；If there is PDCH radio resource, rlc layer is by data block and hair
The RLC parameter for sending data to need, is sent to MAC layer by MAC_PDCH_DATA_REQ, is assembled into rlc/mac layer number by MAC layer
It is sent to physical layer later according to header；
S7: network request terminal sends RLC confirmation message on DCH channel；If network request terminal is sent on DCH channel
RLC confirmation message, then rlc layer sends MAC layer by MAC_CTRL_DCH_REQ for RLC confirmation message, MAC is true by RLC
Recognize information be assembled into RLC/MAC DCH control header be sent to physical layer；
S8: network request terminal sends RLC confirmation message on PDCH channel；If network request terminal is sent out on PDCH channel
RLC confirmation message is sent, then rlc layer sends MAC layer by MAC_CTRL_PDCH_REQ for RLC confirmation message, MAC is by RLC
The PDCH control header that confirmation message is assembled into RLC/MAC is sent to physical layer.
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