CN101682916B - Send RLC PDU and the RLC entity of the method for distributing radio resource and mobile communication in mobile communication system - Google Patents
Send RLC PDU and the RLC entity of the method for distributing radio resource and mobile communication in mobile communication system Download PDFInfo
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- CN101682916B CN101682916B CN200980000296.4A CN200980000296A CN101682916B CN 101682916 B CN101682916 B CN 101682916B CN 200980000296 A CN200980000296 A CN 200980000296A CN 101682916 B CN101682916 B CN 101682916B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Disclose and used limited Radio Resource to carry out the transmission of RLC status PDU by MAC and rlc layer in Long Term Evolution (LTE) system.It is prioritized logic channel in the case of each logical channel assignment Radio Resource in MAC entity, allow MAC entity based on to carry out distributing radio resource from the size of the RLC status PDU that rlc layer sends, and also allow rlc layer to use status PDU before RLC data PDU when using the Radio Resource distributed so that rlc protocol can be avoided to enter deadlock situation owing to not transmitting status PDU.
Description
Cross-Reference to Related Applications
This application claims and carry respectively on February 1st, 2008 and on February 4th, 2008
Hand over U.S. Provisional Application No.61/025,311 and No.61/026,119 and in January, 2009
Profit in the priority of the korean patent application No.10-2009-0007152 of Korea S's submission on the 29th
Benefit.By way of reference the entire content that these are applied for is completely integrated in this.
Technical field
The present invention relates to a kind of wireless protocols in mobile communication system, and more
Body ground, relates to the MAC in a kind of Long Term Evolution (LTE) system and rlc layer uses limited wireless
Resource sends the method for RLC STATUS PDU (RLC status PDU).
Background technology
Fig. 1 is the network architecture of Long Term Evolution (LTE) system, and LTE system is from existing
The mobile communication system of the correlation technique having UMTS system evolution and come, and its basic mark
Standardization is the most carried out.
LTE network can be divided into evolution UMTS grounding wireless access network network
And core network (CN) (E-UTRAN).E-UMTS includes terminal (subscriber equipment；UE), base
Stand (enode b；ENB) access network of the end of the network of external network to be connected to, it is positioned at
Close (aGW).AGW can be divided into and processes the part of customer service and processing controls business
Part.Here it is possible to use new interface to carry out in aGW and the use for processing customer service
Communication between the aGW of processing controls business.One or more communities may reside in one
In eNB.Can use between eNB for transmitting the interface of customer service or control business.
CN can include aGW, for other UE user register node etc..Interface may be used for
Identify E-UTRAN and CN.
Fig. 2 is at terminal and E-UTRAN based on 3GPP wireless access network standard
Between Radio interface protocols control plane framework, and, Fig. 3 is to connect based on 3GPP is wireless
Enter the framework of network standard Radio interface protocols user plane between terminal and E-UTRAN.
Hereinafter, will be described between terminal and E-UTRAN with reference to Fig. 2 and 3
The framework of Radio interface protocols.
Radio interface protocols has level course and has vertical plane, this level course bag
Include physical layer, data link layer and Internet, and this vertical plane includes for transmitting number
It is believed that the user plane of breath and for transmitting the control plane controlling signaling.Can be based in communication
In system, three lower levels of known open system interconnection (OSI) master pattern are by these agreements
Layer is divided into ground floor (L1), the second layer (L2) and third layer (L3).Such Radio interface protocols
Can exist in pairs between terminal and E-UTRAN, be transmitted by the data of interface with management.
Hereinafter, by the radio protocol control plane described in Fig. 2 and Fig. 3
Radio protocol user plane in each layer.
Ground floor as physics (PHY) layer uses physical channel to provide information to upper strata
Transmission service.Physical layer is connected to be referred to as medium education (MAC) layer via transmission channel
Its upper strata.MAC layer and physical layer exchange data via transmission channel.Here it is possible to according to
Whether transmission channel is shared is divided into dedicated transmission channel and common transmission letter by transmission channel
Road.Between different physical layers, i.e. transmit side physical layer and receive side physical layer it
Between, transmit data via physical channel.
Various layers are present in the second layer.First, medium education (MAC) layer is used
In Different Logic channel being mapped to different transmission channel, and also logical channels multiplexing with
By some mapping logical channels to transmission channel.MAC layer is connected to via logic channel
Layer wireless spread-spectrum technology (RLC) layer.Logic channel is divided into by the type according to information to be transmitted
Controlling channel and believing for transmitting the business of user plane information of plane information is controlled for transmitting
Road.
The segmentation of the data that the rlc layer management of the second layer receives from upper strata and cascade,
Suitably to regulate size of data so that lower level can send data by interface.And,
In order to ensure various service quality (QoS) requirement of each radio bearer (RB), rlc layer provides three
Plant operator scheme, including transparent mode (TM), dont answer pattern (UM) and answer-mode (AM).
Especially, with the rlc layer (hereinafter, being referred to as " AM rlc layer ") of AM pattern operation
The repetition automatically transmitted for infallible data and request (ARQ) function is used to perform re-transmission.
It is positioned at PDCP (PDCP) layer of the second layer for relatively small
Bandwidth the most effectively transmit such as IPv4 or IPv6 IP packet.To this end,
PDCP layer reduces IP packet header that is relatively large in size and that include unnecessary control information
Size, i.e. perform to be referred to as the function of header-compressed.Therefore, in the data for transmitting
Header portion in can only include necessary information, in order to improve wave point transmission efficiency.
Be positioned at wireless heterogeneous networks (RRC) layer of the lowest portion of third layer only by
Definition is in the control plane.Rrc layer control with the configuration of radio bearer (RB), reconfigure and
Discharge relevant logic channel, transmission channel and physical channel.Here, RB represents by L2 layer
Logical path for data transmission between the terminal and the utran is provided.Generally, RB
Set up the protocol layer required for regulation offer special services is provided and the characteristic of channel and arrange
Respective detail parameters and operational approach.RB is divided into signaling RB (SRB) and data
RB(DRB).SRB is used as the path for transmitting RRC information in C plane, and DRB
It is used as the path for transmitting user data in U plane.
Hereinafter, rlc layer be will be described in further detail.As it has been described above, rlc layer carries
For Three models, such as TM, UM and AM.Rlc layer seldom performs function with TM, and
And therefore at this, UM and AM will only be described.UM RLC adds to each PDU for transmitting
Add protocol Data Unit (PDU) header including serial number (SN) so that receive side and be appreciated that
Which PDU has been lost during transmission.Due to such function, in user plane, UM
The RLC management such as voice in packet service territory (hereinafter, also referred to as PS territory) is (such as,
VoIP) or the transmission of multi-medium data of streaming or the transmission of real time packet data, and control flat
In face, the RRC information managing the particular terminal in being sent to community or specific group of terminals is worked as
In need not receive the transmission of RRC information of response.
Similarly, AM RLC includes the PDU of SN when constructing PDU by interpolation
Header constructs PDU.Different from UM RLC, receive side to by transmitting the PDU that side sends
Carry out response.Receive side response so that request stresses to pass the PDU being unsuccessfully received from transmission.
Such functions of retransmission is the most important characteristic of AM RLC.Therefore, AM RLC be intended to via
Re-transmission guarantees faultless data transmission.Under this purpose, AM RLC generally puts down user
Management unreal time packet data transmission, the such as TCP/IP in PS territory in face, and in the control plane
Need to receive the RRC of response in the middle of the RRC information of management particular terminal in being sent to community
The transmission of message.
From the point of view of the visual angle in direction, UM RLC is for one-way communication, and AM RLC
Owing to being used for two-way communication from the feedback receiving side.From the point of view of the visual angle of structure, there is difference
Different, i.e. UM RLC is configured so that a RLC entity performs to transmit or receive, and AM
RLC is configured so that transmission side and reception side are present in a RLC entity.AM
The complex configurations of RLC is owing to retransmitting.AM RLC includes in addition to transmitting/receive buffer
For managing the re-transmission buffer of re-transmission.And, AM RLC performs various functions, such as makes
With transmitting and receiving, window carries out flow control, poll transmits side to ask from the reception side of RLC entity
Seek status information, send the state report of reception side with report to the side of transmitting of peer RLC entities
Its buffer state, it is configured to the status PDU of sending state information, etc..AM RLC
Also need to various protocol parameter, such as state variable and timer, in order to support these functions.
For controlling the PDU (such as state report or status PDU) that the data in AM RLC transmit
It is referred to as " controlling PDU ", and is referred to as " data PDU " for transmitting the PDU of user data.
RLC data PDU in AM RLC can be divided in detail
AMD PDU and AMD PDU segmentation.AMD PDU segmentation has and is included in AMD PDU
In the parts of data.In LTE system, when terminal sends data block, can change
The largest amount of data block.Therefore, construct at special time at transmission side AM RLC entity
200 byte AMD PDU and after transferring constructed AMD PDU, when transmitting side
AM RLC receives NACK from receiving side AM RLC and thus attempts retransmitting this AMD
During PDU, if the largest amount of actual transmissible data block is 100 bytes, then cannot be former
Sample sends identical AMD PDU.In this case, AMD PDU segmentation is used.AMD
PDU segmentation represents corresponding AMD PDU is segmented into less unit.During this process,
Transmit side AM RLC entity and AMD PDU is divided into AMD PDU segmentation and some
Interval of individual delivery time is upper transmits AMD PDU segmentation.Then, side AM RLC entity is received
AMD PDU is recovered from received AMD PDU segmentation.
The data received if there is not successfully (the most fully or the most correctly), then
Receiving side AM RLC request and retransmit such data from transmitting side AM RLC, this is referred to as " shape
State is reported ".The report of this state is sent as the status PDU controlling one of PDU by using.
Fig. 4 is the form of status PDU currently used in LTE system.At figure
In 4, trunnion axis represents the length of the RLC status PDU with 8 (that is, 1 eight-bit group)
Degree.
The each field of RLC status PDU be will now be described.
1. data/control (D/C) field: 1
This field indicates corresponding RLC PDU to be RLC data PDU or RLC
Control PDU.
2. control PDU type (CPT) field: 3
The corresponding PDU that controls of this field instruction is any type.RLC controls PDU
Currently only define status PDU.
3. response sequence number (ACK_SN)
Two kinds of ACK_SN will be defined as foloows.
1-1) ACK_SN of type-A does not include its information in status PDU
The RLC SN of the oneth PDU.
1-2) upon receipt of status PDU, transmit side and determine that the success of reception side
Have received until all PDU in the middle of the PDU of the PDU with ACK_SN-1,
Except in the status PDU have NAC_SN instruction PDU or have NACK_SN,
The part of the PDU of instruction in the status PDU of SOstart and SOend.
Such ACK_SN is applied to the enforcement of Fig. 6 according to the present invention and 8
Example.
2-1) another type of ACK_SN includes its information in status PDU
The RLC SN of the oneth PDU.
2-2) upon receipt of status PDU, transmit side and determine that the success of reception side
Have received until all PDU in the middle of the PDU of the PDU with ACK_SN, remove
In the status PDU have NACK_SN instruction PDU or have NACK_SN,
The part of the PDU of instruction in the status PDU of SOstart and SOend.
Such ACK_SN is applied to the enforcement of Fig. 7 according to the present invention and 9
Example.
4. extension 1 (E1): 1
Whether this instruction exists other after current NACK_SN element
NACK_SN element (that is, utilize NACK_SN or utilize NACK_SN, SOstart and
Indicated by SOend).
5.NACK_SN (negative response serial number)
This is the AMD PDU not successfully received or the RLC of AMD PDU segmentation
SN。
5. extension 2 (E2): 1
This indicate whether the SOstart corresponding with current NACK_SN and
SOend field.
6. grading excursion starts (SOstart) and grading excursion terminates (SOend)
Only when there is a part of PDU of NACK_SN (segmentation) and being NACK
Just use these.First byte of this part is corresponding with SOstart and the last word of this part
Save corresponding with SOend.
Meanwhile, receive side AM RLC and cannot always trigger status PDU, but can
The most just to trigger state report.Such condition is referred to as " state report
Accuse and trigger ", and currently used following two conditions of LTE system.
First condition is that poll transmits side.
It is to say, when needs are in time receiving side receiving state report, transmit side AM
RLC arranges poll bit for RLC data PDU for transmitting.Then, side AM RLC is received
RLC data PDU are set upon receipt of poll bit, just trigger state report.
Second condition is RLC data PDU that detection is not successfully received.
It is to say, after completing HARQ and reordering, once detect into
RLC data PDU (that is, AMD PDU or AMD PDU segmentation) that merit receives, receive
Side AM RLC just triggers state report.
It addition, when the report of the state of triggering, receive side AM RLC and use status PDU
Reception buffer state is sent to transmitting side.Here, status PDU is included in from having reception window
In the range of the PDU that the PDU (=VR (R)) to HARQ of the starting point of mouth has reordered
The information of to the last PDU (=VR (MS)) in the middle of PDU.Here, VR (R) and VR (MS) table
Show state variable, they can by receive side AM RLC manage and for receive window,
State report etc..Inter alia, receive side AM RLC and manage additivity variable.
The such additivity variable receiving side AM RLC is described as follows.
-VR (R): receive state variable.
It is maintained at the last AMD PDU in the middle of the AMD PDU being received sequentially
The value of the serial number (SN) of AMD PDU afterwards.
It receives receiving side AM RLC the most not fully (or successfully)
An AMD PDU in the middle of AMD PDU.
It is used as to receive the lower limb of window.
It is initially set to 0.Have SN=VR's (R) when being properly received
During AMD PDU, it is updated to the first AMD not being received entirely after AMD PDU
The value of the SN of PDU.
-VR (MR): maximum acceptable reception state variable.
It is maintained at the AMD in the middle of the AMD PDU outside reception window
The value of the SN of PDU.
It is used as to receive the top edge of window.
When updating VR (R), it is updated to such as
VR (MR)=VR (R)+AM_Window_size.
-VR (X): T_reordering state variable
It is maintained at triggers as managing timer that HARQ reorders
The value of the SN of RLC data PDU after RLC data PDU of T_reordering.
Receive side AM RLC once to connect under conditions of not triggering T_reordering
Receive out-of-sequence RLC data PDU and just drive T_reordering, and VR (X) is arranged in
The value of the SN of RLC data PDU after RLC data PDU.
-VR (MS): maximum rating transmits state variable
This state variable for by only with complete the RLC data that HARQ reorders
Information relevant for PDU is included in status PDU.
It is initially set to 0, and is once properly received and has
The AMD PDU of SN=VR (MS), is just updated to first after AMD PDU not by it
The value of the SN of the AMD PDU being properly received.
-once T_reordering expire, then it is updated to more higher than VR (X)
The value of the SN of the AMD PDU that first in the middle of AMD PDU is not properly received.Will
ACK_SN is arranged to VR (MS) so that structural regime PDU.
-VR (H): the highest state variable received
It is maintained at and receives in the middle of RLC data PDU that side AM RLC receives
The value of the just next SN of the highest SN, i.e. receive side AM RLC first and not successfully connect
The value of the SN of RLC data PDU received.
It is initially set to 0, and upon receipt of than VR (H) higher RLC
Data PDU, are just updated to RLC data PDU after RLC data PDU by it
The value of SN.
Hereinafter, MAC layer the bgical channel priority order row performed will be described
Row (LCP).
When several radio bearers (RB) are re-used and transmit on a transmission channel
Time, it is relative that configuration LTE terminal makes its MAC layer be spaced (TTI) for each delivery time
The amount of the transmission data for each RB is determined based on following rule in given Radio Resource.
1.MAC layer determines for the descending with each priority of logical channels (LCP)
The amount of the transmission data of the RB of multiplexing, and it is then determined that with the row of being prioritized to of each RB
The corresponding as many conveying capacity of data of Maximum Bit Rate (PBR) of row.
If 2. remaining any Radio Resource, then MAC layer determines for each
The amount of the transmission data of the RB of the descending multiplexing of LCP.
Here, it has been currently discussed 1 to 8 LCP, and 1 has represented limit priority,
And 8 represent lowest priority.PBR represents the minimal bit rate guaranteed for corresponding RB, this
Mean that LTE system even can also support the ratio of such degree under the wireless environment of no good cake
Special rate.PBR can be arranged on 0 within the scope of unlimited.
Meanwhile, once initial setting up RB, then by LCP and PBR of each RB
Set up message via RB and be sent to terminal RRC from network RRC.Disappear receiving RB foundation
After breath, then terminal RRC arrange necessity RB and by about each RB LCP and
The information of PBR is sent to terminal MAC.Have been received by the MAC of such information based on this
The rule of the sample given Radio Resource relative to each TTI determines the conveying capacity for each RB.
Summary of the invention
Technical scheme
When logical channels prioritizing (LCP), MAC only considers LCP
And PBR.Therefore, for particular logical channel, it is possible to, the wireless money distributed
Source is likely less than the RLC status PDU to send via corresponding logic channel.But, when touching
Hair-like state report time, it is allowed to receive side AM RLC by with the AMD PDU in preset range
Relevant all information include in the status PDU for transmitting.Therefore, if being used for sending
The Radio Resource of status PDU is less than status PDU, then cannot send constructed status PDU.
Correlation technique does not accounts for such situation.As a result, such situation occurs, and just cannot send
The RLC status PDU constructed, thus cause deadlock situation.
Therefore, it is an object of the invention to, the most suitable in MAC layer logical channels
Sequence arranges so that in the case of each logical channel assignment Radio Resource, it is allowed to MAC layer
(MAC entity) is based on to distribute wireless from the size of the RLC status PDU that rlc layer sends
Resource, and allow rlc layer when using the Radio Resource distributed in RLC data PDU
Use status PDU before, thus it can be prevented that unsuccessful due to status PDU of rlc protocol
Transmit and enter deadlock.To this end, the present invention proposes operation and the behaviour of RLC of MAC respectively
Make.
In order to solve the problem of correlation technique, a kind of for passing in mobile communication system
The method sending wireless spread-spectrum technology (RLC) protocol Data Unit (PDU), including: access from media
Control (MAC) entity and receive the instruction of available resources；Use the instruction of described available resources by preferentially
Order arrangement RLC controls the PDU transmission relative to RLC data PDU；And use is connect
The RLC PDU being prioritized described in the available resources transmission received.
The method may further include and controls the PDU described available money of distribution to RLC
Source, and if remained any resource, then described remaining resource is assigned to described RLC
Data PDU.
RLC controls PDU can represent RLC status PDU, and the method is permissible
Farther include: if the described available resources indicated from described MAC entity are less than a state
The size of PDU, then can be skipped one state by described RLC entity for this conveyer
The transmission of PDU.
(TTI) can be spaced for each delivery time and check described available resources and institute
State a status PDU.
RLC controls PDU can represent RLC status PDU, and the method is permissible
Farther include, by RLC entity, scheduling is checked whether for interval of each delivery time (TTI)
Status PDU is used for transmitting, and if it is, notifies described shape to described MAC entity
The size of state PDU.
In one aspect of the invention, a kind of for distributing in mobile communication system
For the method for resource transmitted, may include that distribute that described resource makes to be reduced preferential
Level order to all logic channels provide service, until etc. each wireless spread-spectrum technology to be sent
(RLC) size of status protocol data units (PDU)；If having remained any resource, then distribute
Such surplus resources makes the priority orders being reduced provide service to all logic channels,
Until the bit rate (PBR) being prioritized of they configurations；And if having remained any
Resource, then distribute such surplus resources and make with the strict priority orders declined to all of
Logic channel provides service.
The method may further include: by medium education (MAC) entity inspection
Whether RLC entity scheduled for transmission for interval of each delivery time (TTI)
Status PDU；And the status PDU for transmission if there is scheduling, then receive with described
The information that the size of status PDU is relevant.
In another aspect of the present invention, a kind of for dividing in mobile communication system
The method joining resource, may include that by medium education (MAC) Layer assignment resource so that with
The priority orders declined provides service to all logic channels, until each of logic channel presses
Each RLC status PDU to be sent such as the bit rate (PBR) of prioritizing adds big
Little；And if remained any resource, then distributed described surplus resources by described MAC entity,
Make to provide service with the strict priority orders declined to all logic channels.
The method may further include: real at RLC by described MAC entity inspection
Whether body scheduled the status PDU for transmitting for each TTI；And if scheduled
For the described status PDU transmitted, then receive the information relevant with the size of described status PDU.
In one aspect of the invention, a kind of radio chains in mobile communication system
Road controls (RLC) entity can include module, and this module is configured to: from medium education
(MAC) entity receives the instruction of resource；Check whether and scheduled peer RLC entities to be sent to
Status PDU；Big by the size of the resource of described instruction and described status PDU to be sent
Little compare；If according to resource described in described comparative result more than or equal to described status PDU,
First described resource is distributed to status PDU, in order to send described to described peer RLC entities
Status PDU；And if according to resource described in described comparative result less than described status PDU,
Then skip the transmission of described status PDU.
Beneficial effect
When Radio Resource is less than the status PDU being used for transmission of scheduling, relevant skill
Art does not define the operational approach receiving side AM RLC, and this causes the deadlock situation of agreement.Cause
This, the present invention allows MAC layer to consider the size of RLC status PDU when Resources allocation, and
And also allow for rlc layer when Resources allocation first to RLC status PDU Resources allocation, in order to
The stable operation of agreement is realized in the case of regardless of wireless environment.
Accompanying drawing explanation
Fig. 1 is Long Term Evolution (LTE) system as related art mobile communication system
The network architecture；
Fig. 2 is at terminal and E-UTRAN based on 3GPP wireless access network standard
Between Radio interface protocols control plane framework；
Fig. 3 is at terminal and E-UTRAN based on 3GPP wireless access network standard
Between the framework of Radio interface protocols user plane；
Fig. 4 is the form of status PDU currently used in LTE system；
Fig. 5 is the logic letter illustrating the MAC layer according to the first embodiment of the present invention
The flow chart of the process of road prioritizing；
Fig. 6 is the logic letter illustrating MAC layer according to the second embodiment of the present invention
The flow chart of the process of road prioritizing；And
Fig. 7 is to illustrate being performed by rlc layer according to the third embodiment of the invention
Method for the Radio Resource that the size by considering status PDU is distributed.
Detailed description of the invention
The present invention is applied to mobile communication system, and more specifically, be applied to from
The Universal Mobile Telecommunications System (E-UMTS) of the evolution of UMTS evolution.But, the present invention is not
It is limited to this system, but can be applicable to any communication system meeting the scope of the present invention and communicate
Agreement.
If because can come with dry form in the case of without departing from the characteristic of the present invention
Embody inventive feature, so it is described above to it is also understood that above-described embodiment is not only restricted to
Any details, except as otherwise noted, but should be as defined in appended claims
Carry out the explanation of broad sense in the scope of the present invention, and therefore fall into border and the boundary of claim
Limit or such border and boundary equivalent in changed and revise all it is therefore intended that by with
Attached claim is contained.
The term of the order numeral comprising such as 1,2 etc. may be used for describing various groups
Part, but these assemblies can be not limited to these terms.These terms are only used for an assembly
The purpose distinguished mutually with another assembly.Such as, the first assembly can be referred to as the second assembly,
Without deviating from the scope of the present invention, and similarly, the second assembly can be referred to as the first assembly.
Term "and/or" will include the combination of multiple item being associated or any of multiple item being associated
?.
When mentioning that an assembly " connects " or " access " arrives another assembly, should
One assembly can be directly connected to or be linked into this another assembly；But, any intermediate module
May reside in therebetween.On the other hand, when mentioning that one assembly " is directly connected to " or " straight
Access " to another assembly time, it is possible to understand that do not have other intermediate modules to be stored in therebetween.
The term used in the present invention is for illustrating preferred embodiment, and and unawareness
Limiting the present invention.Odd number represents can include multiple expression, unless it represents and civilization up and down
The most different implications.The term that should will be used in the present invention " includes " or " having " reason
Solve for they be intended to instruction exist in the description disclosed in feature, number, step, operation,
Assembly, item or a combination thereof, and be not construed as them and be intended to formerly get rid of existence one
Individual or multiple other features, number, step, operation, assembly or its any combination or interpolation
The probability of those things.Unless otherwise defined, all terms as used herein, including technology
Or scientific terminology, can have and be generally understood that with those skilled in the art
The implication that implication is identical.The Essential Terms with the implication identical with defined in dictionary should be by
It is construed to that there is the implication identical with context implication.Unless defined the most clearly,
Such term should not be construed to have preferable or the most formal implication.
Hereinafter, will be shown in detail according to the preferred embodiment of the invention with reference to accompanying drawing
Describe.For the sake of briefly describing with reference to accompanying drawing, identical or equivalent assemblies no matter reference and
It is provided of identical reference, and eliminates the repeated description to it.
Present invention recognize that point below: for particular logical channel, if distributed
Radio Resource less than the RLC status PDU to send via corresponding logic channel, then cannot
Structural regime PDU.
Considering such understanding, the present invention is conceptive is characterised by 1) in MAC layer
(MAC entity) logical channels prioritizing is so that wireless to each logical channel assignment
In the case of resource；2) allow MAC layer based on the RLC status PDU to send from rlc layer
Size distribute described Radio Resource；And also 3) allow rlc layer to be distributed in use
Before RLC data PDU, status PDU is used during Radio Resource, thus 4) it is possible to prevent RLC
Agreement enters deadlock situation owing to not transmitting status PDU.
First and second embodiments of the present invention illustrate operation side in the mac layer
Method, and the third embodiment of the present invention illustrates the operational approach in rlc layer.At this
In bright embodiment, Radio Resource is briefly termed as " resource ", and also is referred to as " transmitting
Resource " because it is used for transmitting status PDU.
And, in first to the 3rd embodiment of the present invention, by status PDU from
RLC entity is sent to peer RLC entities.Therefore, status PDU can represent RLC state
PDU, and two name status, PDU and RLC status PDU is all used for describing the present invention.
In the following, it is described that the first embodiment of the present invention.
When logical channels prioritizing (LCP) process, patrol for each
Collecting channel, first MAC layer considers the size of the status PDU constructed by RLC.It is,
When performing LCP process, then MAC layer first decline priority with each logic channel is suitable
Sequence considers the size of the RLC status PDU of each logic channel, in order to distributing radio resource, and
And hereafter perform the LCP process of correlation technique.
The first embodiment of such process is described with reference to Fig. 5.
Fig. 5 is the logic letter illustrating the MAC layer according to the first embodiment of the present invention
The flow chart of road prioritizing (LCP).Each TTI is performed to the LCP process of Fig. 5.
With reference to Fig. 5, MAC layer (or MAC entity) from each RLC entity receive with
The information (RLC status PDU size information) (S1) that the size of RLC status PDU is relevant.MAC
Layer considers the RLC status PDU size information received from each RLC entity, in order to often
The descending order of individual priority of logical channels is to each logical channel assignment Radio Resource (S2).
If remained after Radio Resource to each logical channel assignment in step S2
Any Radio Resource (S3), then be assigned to remaining Radio Resource with the priority orders declined
Each logic channel, until the PBR (S4) of they configurations.After step s4, if remained
Any Radio Resource, then be assigned to number by remaining Radio Resource with the priority orders that declines
According to (S6).
Fig. 6 is the logic letter illustrating MAC layer according to the second embodiment of the present invention
The flow chart of road prioritizing (LCP) process, this is another of LCP process of MAC layer
Individual exemplary embodiment.Each TTI is performed to the LCP process of Fig. 6.By the second of Fig. 6
Embodiment is compared with the first embodiment of Fig. 5, in the embodiment in fig 6, in distribution logic
During channel, perform LCP program based on each status PDU size and each PBR.The most just
It is, with the descending order of priority of logical channels based on each PBR and each RLC status PDU
Distribute all logic channels.
Hereinafter, real by being more fully described second according to the present invention with reference to Fig. 6
Execute the LCP process of example.
MAC layer (MAC entity) receives and RLC state from each RLC entity
The information (RLC status PDU size information) (S11) that the size of PDU is relevant.Then, MAC
Layer is based on the RLC status PDU size information received from each RLC entity and each PBR
With decline priority orders to each logical channel assignment Radio Resource (S12).
After step s 12, if having remained any Radio Resource (S13), then MAC
Remaining resource can be assigned to data (S14) with the priority orders declined by layer further.
Meanwhile, in the case of first and second embodiments of the present invention, for each
TTI, in order to consider the size of the RLC status PDU of each logic channel during LCP process,
The size of the status PDU being used for transmitting of scheduling should be notified to MAC layer by RLC entity.
As it has been described above, first and second embodiments of the present invention illustrate to pass through
Mutual between RLC entity and MAC layer is patrolled to each based on RLC status PDU size information
Collect channel distributing radio resource.Therefore, in the present invention it is possible to by nothing before data PDU
Line resource is assigned to status PDU so that can send status PDU before data PDU.
Hereinafter, the third embodiment of the present invention will be described.
Fig. 7 is to illustrate being performed by rlc layer according to the third embodiment of the invention
The flow chart of the method for distributing radio resource is carried out for size based on status PDU.
As illustrated by first and second embodiments of the present invention, in order to support MAC
Operation, for each TTI, it should check for scheduling for transmit status PDU,
And if it is present the size of corresponding status PDU should be notified to MAC.Need
Such RLC-MAC is alternately to allow the operational approach of MAC.
But, different from above method, RLC itself can be operated to avoid RLC
Deadlock state.It is, when receiving the information (indicate) relevant with available resources from MAC layer
Time, if these available resources are more than or equal to the size of status PDU, then RLC entity can be by
Status PDU for transmitting is prioritized relative to RLC data PDU.It is,
First these available resources are assigned to RLC status PDU, and if remained any resource,
Then such remaining resource is assigned to RLC data PDU.
And, if from these available resources of MAC instruction less than status PDU, then
For this conveyer meeting, RLC entity can not send status PDU (that is, skip state PDU
Transmission).In other words, in conveyer meeting the earliest, i.e. when available resources more than or etc.
When the size of status PDU, RLC entity can send status PDU.
Receive the instruction of available resources from MAC layer again referring to Fig. 7, RLC entity
(S21).If the size of received available resources is more than or equal to the size of status PDU
(S22), then RLC entity first to RLC status PDU Resources allocation (S23).To state
After PDU is assigned with resource, if having remained any resource, the most then RLC entity is to RLC
Data PDU distribute remaining resource (S24).But, if the size of Radio Resource is less than state
The size (S22) of PDU, then for this conveyer meeting, RLC entity skips RLC status PDU
Transmission.Afterwards, RLC entity checks the size of Radio Resource for each TTI, in order to when
The size of resource is more than sending status PDU (S25) during status PDU.
Hereinafter, the RLC entity according to the present invention will be described.
RLC entity according to the present invention can be the equipment including module, this module
It is configured to: receive the instruction of Radio Resource from MAC layer；Check whether and scheduled and to be sent to
The status PDU of peer RLC entities；Use by the size of received Radio Resource Yu scheduling
Compare in the size of status PDU transmitted, if according to comparative result Radio Resource more than or
Equal to status PDU, first distribute described Radio Resource to status PDU to equity RLC
Entity sends status PDU, and if according to comparative result Radio Resource less than status PDU,
The then transmission of skip state PDU.Meanwhile, this module can include the multiple of the function according to it
Assembly.It is, this module can include the reception unit for receiving Radio Resource, for
By the comparison compared with the size of the status PDU being used for transmitting of scheduling of the size of Radio Resource
Unit and for transmitting the delivery unit of status PDU.Therefore, it can be able to carry out with each
Various types of assemblies of its function realize this module.
RLC entity according to the present invention consists essentially of reality in addition to aforementioned components
Software and hardware required for existing the scope of the present invention, such as, outut device (such as, display,
Speaker etc.), input equipment (such as, keyboard, mike etc.), memorizer, transceiver (such as,
RF module, antenna etc.).Those skilled in the art is clearly understood that such assembly, and
Therefore detailed description will not be repeated.
, describing so far, the method according to the invention can pass through hardware or software meanwhile
Or its any combination realizes.Such as, the method according to the invention can be stored in storage Jie
In matter (such as, the internal storage of mobile terminal, flash memory, hard disk etc.).Alternatively, according to this
The method of invention may be implemented as can be by processor (such as, the micro-process in mobile terminal
Device) code in the software program that performs or command word.
By reference to being only that exemplary embodiment explains the present invention.To this area
Technical staff will be apparent to, without departing from the spirit or scope of the present invention, at this
Invention can carry out other embodiments of various amendment and equivalent.Furthermore, it is to be understood that, permissible
The most wholly or partially combination previous embodiment realizes the present invention.Therefore, the present invention
It is intended to cover the amendment of this invention and variant, as long as they fall into claim and equivalent thereof
Within the scope of.
Claims (11)
1. one kind is used for transmitting wireless spread-spectrum technology (RLC) protocol data in mobile communication system
The method of unit (PDU), this wireless spread-spectrum technology (RLC) protocol Data Unit (PDU) includes RLC
Controlling PDU and RLC data PDU, the method includes:
The instruction of available resources is received from medium education (MAC) entity；
Use the instruction of described available resources, described in described RLC data PDU priorization
RLC controls the transmission of PDU；And
The RLC transmitting the described priorization higher than described RLC data PDU controls PDU,
Wherein, described RLC controls PDU and represents RLC status PDU,
Wherein, described method farther includes:
If the described available resources indicated from described MAC entity are less than the big of a status PDU
Little, then for this conveyer meeting, RLC entity skip the transmission of one status PDU.
Method the most according to claim 1, farther includes:
Control PDU to described RLC and distribute described available resources, and if having remained any money
Source, then be assigned to described RLC data PDU by described remaining resource.
Method the most according to claim 1, wherein, is spaced (TTI) in each delivery time
Check described available resources and one status PDU.
Method the most according to claim 1, wherein, described RLC controls PDU and represents RLC
Status PDU,
Wherein said method farther includes:
It is spaced (TTI) in each delivery time, RLC entity checks whether and scheduled for passing
The status PDU sent, and if it is, notify described status PDU to described MAC entity
Size.
Method the most according to claim 1, wherein, it is RLC that described RLC controls PDU
Status PDU.
Method the most according to claim 5, wherein, described RLC status PDU is used for providing
To the affirmative of some part of acknowledged mode data (AMD) PDU or AMD PDU and/or no
Determine response.
7. the method that distribution is used for the resource transmitted in mobile communication system, including:
Distribute described resource so that all logic channels are serviced with the priority orders declined,
Until etc. each wireless spread-spectrum technology (RLC) status protocol data units (PDU) to be sent big
Little；
If having remained any resource, then distribute such surplus resources so that all logics are believed
Road is serviced with the priority orders declined, until the bit rate of the priorization of they configurations
(PBR)；And
If having remained any resource, then distribute such surplus resources and all of logic is believed
Road is serviced with the strict priority orders declined.
Method the most according to claim 7, farther includes:
By medium education (MAC) entity inspection in RLC entity between each delivery time
The status PDU for transmitting whether is scheduled every (TTI)；And
If there is the status PDU for transmission being scheduled, then receive and described status PDU
The relevant information of size.
9. a method for Resources allocation in mobile communication system, including:
By medium education (MAC) entity allocating resources so that all logic channels are to decline
Priority orders serviced, until the bit rate (PBR) of each priorization of described logic channel
Each wireless spread-spectrum technology (RLC) status protocol data units (PDU) to be sent such as add
Size；And
If having remained any resource, then distributed described surplus resources by described MAC entity, make
Obtain all logic channels to be serviced with the strict priority orders declined.
Method the most according to claim 9, farther includes:
By described MAC entity inspection in RLC entity in interval of each delivery time (TTI) it is
The no status PDU that scheduled for transmitting；And
If scheduled the described status PDU for transmitting, then receive and described status PDU
The information that size is relevant.
Wireless spread-spectrum technology (RLC) entity in 11. 1 kinds of mobile communication system, including module,
This module is configured to:
The instruction of resource is received from medium education (MAC) entity；
Check whether the status protocol data units that scheduled peer RLC entities to be sent to
(PDU)；
By the size of the resource of described instruction compared with the size of described status PDU to be sent
Relatively；
If according to the described resource of described comparative result more than or equal to described status PDU, then first
First distribute described resource to described status PDU, in order to send described shape to described peer RLC entities
State PDU；And
If according to the described resource of described comparative result less than described status PDU, then skip described
The transmission of status PDU.
Applications Claiming Priority (8)
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| US2531108P | 2008-02-01 | 2008-02-01 | |
| US61/025,311 | 2008-02-01 | ||
| US2611908P | 2008-02-04 | 2008-02-04 | |
| US61/026,119 | 2008-02-04 | ||
| KR1020090007152 | 2009-01-29 | ||
| KR20090007152A KR101509766B1 (en) | 2008-02-01 | 2009-01-29 | Method for sending rlc pdu and allocating radio resource in mobile telecommunications system and rlc entity of mobile telecommunications |
| KR10-2009-0007152 | 2009-01-29 | ||
| PCT/KR2009/000479 WO2009096746A2 (en) | 2008-02-01 | 2009-01-30 | Method for sending rlc pdu and allocating radio resource in mobile communications system and rlc entity of mobile communications |
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| Publication Number | Publication Date |
|---|---|
| CN101682916A CN101682916A (en) | 2010-03-24 |
| CN101682916B true CN101682916B (en) | 2016-09-07 |
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| JP (1) | JP5037633B2 (en) |
| KR (1) | KR101509766B1 (en) |
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| KR101335869B1 (en) | 2009-08-12 | 2013-12-02 | 엘지전자 주식회사 | Apparatus and method of allocating resources for logical channels in wireless communication system |
| EP2561718A4 (en) * | 2010-04-23 | 2015-06-03 | Nokia Corp | Method and apparatus for transfer of radio resource allocation |
| CN104685959B (en) * | 2012-09-12 | 2019-04-09 | 英特尔公司 | Passive radio link control entity with unified interface |
| CN107302770A (en) * | 2016-04-15 | 2017-10-27 | 中兴通讯股份有限公司 | A kind of data repeating method and device |
| CN107846369A (en) * | 2016-09-19 | 2018-03-27 | 中兴通讯股份有限公司 | Business scheduling method and device and corresponding base station |
| CN106717102B (en) * | 2016-11-09 | 2020-07-03 | 北京小米移动软件有限公司 | Method and device for sending control Protocol Data Unit (PDU) |
| CN111294165B (en) * | 2019-03-22 | 2021-06-08 | 展讯通信（上海）有限公司 | Resource allocation method and device, storage medium and terminal |
| CN111294980B (en) * | 2019-03-28 | 2022-02-15 | 展讯通信（上海）有限公司 | Method and device for establishing radio bearer |
| CN113678531B (en) * | 2019-09-26 | 2024-03-08 | Oppo广东移动通信有限公司 | Method for multiplexing uplink logical channel and terminal equipment |
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| CN1852290A (en) * | 2005-08-12 | 2006-10-25 | 上海华为技术有限公司 | Method for generating transmission data block |
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| GB2355890B (en) * | 1999-10-28 | 2003-10-08 | Ericsson Telefon Ab L M | Data transmission in a telecommunications network |
| EP1341336B1 (en) * | 2002-02-14 | 2005-07-13 | Matsushita Electric Industrial Co., Ltd. | Method for controlling the data rate of transmitting data packets in a wireless communications system, receiver and transmitter therefor |
| KR100876730B1 (en) * | 2002-07-08 | 2008-12-31 | 삼성전자주식회사 | Efficient Initial Transmission Format Coupling Factor Setting Method for Wideband Code Division Multiple Access |
| JP2004274170A (en) * | 2003-03-05 | 2004-09-30 | Ntt Docomo Inc | Communication system, terminal apparatus, radio communication apparatus, information transmitting apparatus, relay apparatus, management server and communication method |
| KR101048256B1 (en) * | 2004-03-31 | 2011-07-08 | 엘지전자 주식회사 | Data transmission method according to importance of mobile communication system |
| US7885245B2 (en) * | 2004-07-19 | 2011-02-08 | Interdigital Technology Corporation | Method and apparatus for enhanced uplink multiplexing |
| EP1811727A3 (en) * | 2005-02-07 | 2008-03-26 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting a status report for retransmission control in a mobile communication system |
| KR101137327B1 (en) * | 2005-05-06 | 2012-04-19 | 엘지전자 주식회사 | Method of transmitting control information for uplink channel scheduling and method of scheduling uplink channel |
| KR101276024B1 (en) * | 2006-03-21 | 2013-07-30 | 삼성전자주식회사 | Apparatus and Method for Transmitting of Protocol Data in HSDPA system |
| KR20080018055A (en) * | 2006-08-23 | 2008-02-27 | 삼성전자주식회사 | Method and apparatus for transmitting and receiving packet data |
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| CN1852290A (en) * | 2005-08-12 | 2006-10-25 | 上海华为技术有限公司 | Method for generating transmission data block |
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| JP2010521869A (en) | 2010-06-24 |
| CN101682916A (en) | 2010-03-24 |
| KR20090084722A (en) | 2009-08-05 |
| KR101509766B1 (en) | 2015-04-15 |
| GB201002891D0 (en) | 2010-04-07 |
| GB2467452B (en) | 2012-10-24 |
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| GB2467452A (en) | 2010-08-04 |
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