CN102916787B - The method and apparatus of ARQ Discard message optimisations - Google Patents

The method and apparatus of ARQ Discard message optimisations Download PDF

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Publication number
CN102916787B
CN102916787B CN201110218416.7A CN201110218416A CN102916787B CN 102916787 B CN102916787 B CN 102916787B CN 201110218416 A CN201110218416 A CN 201110218416A CN 102916787 B CN102916787 B CN 102916787B
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CN
China
Prior art keywords
message
life cycle
arq
timer time
discard message
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Expired - Fee Related
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CN201110218416.7A
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Chinese (zh)
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CN102916787A (en
Inventor
吴迪
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ZTE Corp
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ZTE Corp
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Priority to CN201110218416.7A priority Critical patent/CN102916787B/en
Priority to PCT/CN2012/073427 priority patent/WO2012155708A1/en
Publication of CN102916787A publication Critical patent/CN102916787A/en
Application granted granted Critical
Publication of CN102916787B publication Critical patent/CN102916787B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1835—Buffer management
    • H04L1/1838—Buffer management for semi-reliable protocols, e.g. for less sensitive applications such as streaming video
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1848—Time-out mechanisms

Abstract

The present invention relates to a kind of method and apparatus of ARQ Discard message optimisations, this method includes：Start the lifetime timer of the current data block after current data block is transmitted；ARQ Discard message is sent after one section of predetermined duration send ARQ Discard message by postponing a period of time after the lifetime timer time-out, it can effectively ensure to be up to an ARQ Discard message in a frame, feedback message is possible to be delivered up in this following period of time of delay simultaneously, this not only reduces the traffic volume of message, bandwidth of air-interface is saved, while also improves the stability of data transfer.

Description

The method and apparatus of ARQ Discard message optimisations
Technical field
The present invention relates to communication technical field, the method and apparatus of ARQ Discard message optimisations is referred in particular to.
Background technology
ARQ (Automatic Repeat-reQuest, HARQ) in wireless network is that one kind is based on data MAC (Media Access Control, FDDI sublayer protocol) layer transmission guarantee technology that block is retransmitted, it is logical The message feedback for crossing transmitting terminal and receiving terminal realizes that data transfer confirms and retransmitted, and ensures data weight by multiple timers Pass.Transmitting terminal sends data block, and the data block of transmission is stored in and sent in window, and receiving terminal is sent after receiving data block Feedback message represents the data block received, sends NACK (feedback not received) message and represents which data block is not received Arrive, transmitting terminal removes data block when receiving feedback message from window, and data re-transmission is carried out when receiving NACK.
ARQ has multiple timers to be used to ensure that data retransmit, and transmitting terminal includes following three important timers, and it is fixed to retransmit When device, lifetime timer and window synchronization timer.If retransmission timer is used to ensure within this cycle if received Less than the feedback message of receiving terminal, with regard to carrying out data re-transmission；Lifetime timer is used for the life cycle for defining a block, After timer expiry, by ARQ receiving terminals send ARQ Discard message informings receiving terminal data blocks and before number It will be all dropped according to block, and no longer carry out data re-transmission, receiving terminal will return a confirmation after receiving ARQ Discard message to transmitting terminal Information, transmitting terminal is after ARQ startings window will be moved to the data block after receiving the confirmation of receiving terminal, if can not receive This ARQ Discard message of confirmation is to be retransmitted.Window synchronization timer is used for the movement for ensureing current window, the timing Need to initiate ARQ Reset flows after device time-out.Wherein：Each ARQ data block safeguards a retransmission timer and Life Cycle Phase timer, an ARQ processing module safeguard a window synchronization timer.
, will when link transmission signal quality is very poor due to being that each data block safeguards a lifetime timer Because descending packet loss can not receive ARQ feedback message and cause the lifetime timer time-out of many data blocks, therefore just Having many ARQ Discard message and be sent to and eat dishes without rice or wine, this ARQ is also retransmitted when can not receive the confirmation of receiving terminal Discard message, or even there is the situation for having multiple ARQ Discard message in a frame data, occupy a large amount of bandwidth of air-interface.
The content of the invention
The main object of the present invention is to provide a kind of method and apparatus of ARQ Discard message optimisations, need not with reduction The idle message wanted, improve ARQ retransmission efficiency and stability.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of method of ARQ Discard message optimisations, it includes：
Start the lifetime timer of the current data block after current data block is transmitted；
ARQ Discard message is sent after one section of predetermined duration after the lifetime timer time-out.
Preferably, it is described to send ARQ Discard after one section of predetermined duration after lifetime timer time-out Message, specifically include：
Start a life cycle delay timer after the lifetime timer time-out；
The ARQ Discard message is sent after life cycle delay timer time-out.
Preferably, the ARQ Discard message is sent after life cycle delay timer is overtime described, specifically Including：
If the lifetime timer for not having other data blocks before the life cycle delay timer time-out surpasses When, then directly transmit ARQ Discard message after life cycle delay timer time-out；
If there is the lifetime timer time-out of other data blocks before the life cycle delay timer time-out, The block sequence number BSN of the ARQ Discard message is then updated, institute is sent after life cycle delay timer time-out State the ARQ Discard message of BSN most rearward.
Preferably, the ARQ Discard message is sent after life cycle delay timer time-out, afterwards, Also include：Start the retransmission timer of current data block, the ARQ is not received after the retransmission timer time-out During the confirmation of Discard message, then check that whetheing there is other has the data block of life cycle delay timer, if do not had Have, then directly retransmit the ARQ Discard message；If so, the lifetime timer of other data blocks is then waited to surpass When after retransmit the ARQ Discard message of the BSN most rearward.
Preferably, one life cycle delay timer of the startup, is specifically included：When the lifetime timer surpasses When before do not receive the feedback message of current data block, then record the BSN of the current data block, and start a Life Cycle Phase delay timer.
A kind of ARQ Discard message optimisation equipment, it includes：
First timer start unit, for starting the life of the current data block after current data block is transmitted Order cycle timer；
First message transmitting element, for being sent out after the lifetime timer time-out after one section of predetermined duration Send ARQ Discard message.
Preferably, the first message retransmission unit, is specifically included：
Second timer promoter unit, prolong for starting a life cycle after the lifetime timer time-out Slow timer；
Second message transmission sub-unit, for sending the ARQ after life cycle delay timer time-out Discard message.
Preferably, the second message transmission sub-unit, is used for：
If the lifetime timer for not having other data blocks before the life cycle delay timer time-out surpasses When, then directly transmit ARQ Discard message after life cycle delay timer time-out；
If there is the lifetime timer time-out of other data blocks before the life cycle delay timer time-out, The block sequence number BSN of the ARQ Discard message is then updated, institute is sent after life cycle delay timer time-out State the ARQ Discard message of BSN most rearward.
Preferably, the first message retransmission unit also includes：
3rd timer promoter unit, for starting the retransmission timer of current data block；
3rd retransmitting message subelement, for not receiving the ARQ Discard after the retransmission timer time-out During the feedback message of message, check that whetheing there is other has the data block of life cycle delay timer, if it is not, directly weight The ARQ Discard message sent described in passing；If so, after then waiting the lifetime timer time-out of other data blocks Retransmit the ARQ Discard message of the BSN most rearward.
Preferably, the second timer promoter unit, for not having before lifetime timer time-out The feedback message of current data block is received, then records the BSN of the current data block, and start a life cycle delay timing Device.
Implement technical scheme, have the advantages that：ARQ Discard message optimisations provided by the invention Method and apparatus, by postpone a period of time send ARQ Discard message, can effectively ensure in a frame be up to one Individual ARQ Discard message, while feedback message is possible to be delivered up in this following period of time of delay, so not only subtracts Lack the traffic volume of message, saved bandwidth of air-interface, while also improve the stability of data transfer.
Brief description of the drawings
Fig. 1 is the flow chart for the ARQ Discard message optimisation methods that one embodiment of the invention provides；
Fig. 2 is the flow chart for the ARQ Discard message optimisation methods that one embodiment of the invention provides；
Fig. 3 is the structural representation for the ARQ Discard message optimisation equipment that one embodiment of the invention provides；
Fig. 4 is the structural representation for the first message transmitting element that one embodiment of the invention provides；
Fig. 5 is the structural representation for the first message transmitting element that one embodiment of the invention provides；
Fig. 6 is the workflow diagram for the ARQ Discard message optimisation equipment that one embodiment of the invention provides.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
The embodiment of the present invention provides a kind of method of ARQ Discard message optimisations, as shown in figure 1, this method include with Lower step：
S110, the lifetime timer for starting the current data block afterwards is transmitted in current data block；
S120, transmission ARQ Discard disappear after one section of predetermined duration after the lifetime timer time-out Breath.
That is, after lifetime timer time-out, when not being eager to send ARQ Discard message, and being to wait for certain Length retransmits, and the predetermined duration can be the transmission time span of a frame data, can also be more than the transmission of a frame data Time span.
As shown in Fig. 2 in more specifically embodiment, above-mentioned steps S120 is specifically included：
S121, start a life cycle delay timer after the lifetime timer time-out；
The feedback message of current data block is not received before lifetime timer time-out, then it is current to record this The BSN (Block Sequence Number, block sequence number) of data block, and start a life cycle delay timer.
Specifically, the time out period of the life cycle delay timer is exactly above-mentioned one section of predetermined duration.
The BSN of the data block is ARQ Discard message.The BSN is with later to the ARQ Discard message BSN is updated.
S122, send the ARQ Discard message after life cycle delay timer time-out.
In the present embodiment, more specifically, step S122 is specifically included：
If the lifetime timer for not having other data blocks before the life cycle delay timer time-out surpasses When, then directly transmit ARQ Discard message after life cycle delay timer time-out；
If there is the lifetime timer time-out of other data blocks before the life cycle delay timer time-out, The BSN of the ARQ Discard message is then updated, because the difference of the ARQ Discard message between different pieces of information block is only It is BSN differences, because the message body of different data blocks is identical.After the life cycle delay timer time-out Send the ARQ Discard message of the BSN most rearward.Namely send the ARQ Discard message with newest BSN.Institute To eat dishes without rice or wine to carry out waiting the hair for taking resource and reducing message without the ARQ Discard message of other data blocks is sent to The amount of sending.
In other embodiments, further, after step s 122, in addition to：The re-transmission for starting current data block is determined When device, when the confirmation of the ARQ Discard message is not received after the retransmission timer time-out, then check whether there is Other have the data block of life cycle delay timer, if it is not, directly retransmitting the ARQ Discard message；Such as Fruit has, then waits and retransmit the ARQ Discard of the BSN most rearward after the lifetime timer time-out of other data blocks and disappear Breath.To realize the re-transmission of ARQ Discard message, and without the ARQ Discard message of other data blocks is sent into sky Mouth carries out waiting the traffic volume for taking resource and reducing message.
The ARQ Discard message of BSN most rearward is same disappear with the ARQ Discard message for starting to send Breath, simply BSN is different.
The embodiment of the present invention also provides a kind of ARQ Discard message optimisation equipment, and the equipment can be base station, terminal etc. The network equipment, as shown in figure 3, the equipment 200 includes：
First timer start unit 210, for starting the current data block after current data block is transmitted Lifetime timer；
First message transmitting element 220, for after the lifetime timer time-out by one section of predetermined duration ARQ Discard message is sent afterwards.In the particular embodiment, as shown in figure 4, the first message transmitting element 220 is specific Including：
Second timer promoter unit 221, for starting a Life Cycle after the lifetime timer time-out Phase delay timer；
Second message transmission sub-unit 222, for sending the ARQ after life cycle delay timer time-out Discard message.In more specifically embodiment, the second retransmitting message subelement 222, it is used for：
If the lifetime timer for not having other data blocks before the life cycle delay timer time-out surpasses When, then directly transmit ARQ Discard message after life cycle delay timer time-out；
If there is the lifetime timer time-out of other data blocks before the life cycle delay timer time-out, The block sequence number BSN of the ARQ Discard message is then updated, institute is sent after life cycle delay timer time-out State the ARQ Discard message of BSN most rearward.
As shown in figure 5, in more specifically embodiment, first message transmitting element 220 also includes：
3rd timer promoter unit 223, for starting the retransmission timer of current data block；
3rd retransmitting message subelement 224, for not receiving the ARQ after the retransmission timer time-out During the feedback message of Discard message, check that whetheing there is other has the data block of life cycle delay timer, if not provided, The ARQ Discard message sent described in then directly retransmitting；If so, then wait the life cycle timing of other data blocks The ARQ Discard message of the BSN most rearward is retransmitted after device time-out.
The second timer promoter unit 221, it is additionally operable to not receive before lifetime timer time-out To the feedback message of current data block, then the BSN of the current data block is recorded, and start a life cycle delay timer.
The equipment that above-described embodiment provides, ARQ Discard message is sent by postponing a period of time, can effectively be protected Demonstrate,prove and an ARQ Discard message is up in a frame, while feedback message is possible to be passed in this following period of time of delay Send up, this not only reduces the traffic volume of message, saves bandwidth of air-interface, while also improves the stabilization of data transfer Property.
The application examples of an application above apparatus and method is provided below：
The application examples is with WiMAX (Worldwide Interoperability for Microwave Access, the whole world Microwave interconnecting accesses) in ARQ exemplified by, using base station as transmitting terminal, terminal is receiving terminal, fixed to start the delay of life cycle When device mode as related method thereof, the application process of the above method and equipment is illustrated, as shown in fig. 6, the application process Specifically include following steps：
S301, base station send data to terminal, by first timer start unit are data block while sending data Start lifetime timer；
S302, terminal is waited to send feedback message；
S303, before lifetime timer time-out if having received the feedback message of the terminal data block, perform step Rapid S304, otherwise perform step S305；
S304, cancel the lifetime timer；
S305：Feedback message is not received before lifetime timer time-out, determines lifetime timer time-out, Then record the BSN of this data block；
S306 simultaneously starts a Life Cycle by the second timer promoter unit 221 of first message transmitting element 220 Phase delay timer；
If the lifetime timer of other data blocks is overtime before S307, life cycle delay timer time-out, Then only update the BSN of the ARQ Discard message of needs transmission；
If have received the confirmation of ARQ Discard message in S308, life cycle delay timer time-out, take Disappear the life cycle delay timer, and this data block is correctly received；Otherwise step S309 is performed；
Sent after S309, life cycle delay timer time-out by the second message transmission sub-unit 222 according to record BSN sends ARQ Discard message or directly transmits ARQ Discard message (obtains life cycle in the absence of other data blocks In the case of delay timer time-out), this BSN is that the BSN (ARQ of BSN i.e. most rearward of time most rearward Discard message)；
S310, the data block of the ARQ Discard message of transmission is started by the 3rd timer promoter unit 223 and is somebody's turn to do Data block obtains retransmission timer, in case retransmitting this message after the confirmation of terminal is not received.If the retransmission timer is overtime Confirmation is have received before, then cancels Discard retransmitting message timers；Otherwise step S311 is performed；
The confirmation of terminal is not received before S311, retransmission timer time-out, confirms retransmission timer time-out；
S312, the life cycle first looked at by the 3rd retransmitting message subelement 224 with the presence or absence of other data blocks are prolonged Slow timer because the life cycle delay timer of other data blocks BSN certain weight proportions pass timer the BSN times lean on Afterwards, so without sending the ARQ Discard message retransmitted, after the life cycle delay timer time-out for waiting other data blocks The BSN most rearward of record ARQ Discard message is retransmited, otherwise performs step (without in the case of other data blocks) S313；
S313, directly retransmit ARQ Dsicard message.
In said process, if ARQ Discard retransmitting messages are not all confirmed information several times, ARQ window is just not It can move, then window synchronization timer expiry can be caused, now flow (will be restarted) into ARQ Reset.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and All any modification, equivalent and improvement made within principle etc., should be included in the scope of the protection.

Claims (10)

  1. A kind of 1. method of ARQ Discard message optimisations, it is characterised in that including：
    Start the lifetime timer of the current data block after current data block is transmitted；
    After the lifetime timer time-out, ARQ Discard message is sent after one section of predetermined duration；
    It is described after the lifetime timer time-out, after one section of predetermined duration send ARQ Discard message packages Include：
    After the lifetime timer time-out, before predetermined duration reaches, the life cycle for having other data blocks is determined When device time-out, then update the BSN of the ARQ Discard message；After preset time arrival, the ARQ with newest BSN is sent Discard message.
  2. 2. the method as described in claim 1, it is characterised in that described predetermined by one section after lifetime timer time-out Duration after send ARQ Discard message, specifically include：
    Start a life cycle delay timer after the lifetime timer time-out；
    The ARQ Discard message is sent after life cycle delay timer time-out.
  3. 3. method as claimed in claim 2, it is characterised in that sent described after life cycle delay timer is overtime The ARQ Discard message, is specifically included：
    If there is no the lifetime timer time-out of other data blocks before the life cycle delay timer time-out, ARQ Discard message is directly transmitted after life cycle delay timer time-out；
    If there is the lifetime timer time-out of other data blocks before the life cycle delay timer time-out, more The block sequence number BSN of the new ARQ Discard message, described in the transmission afterwards of life cycle delay timer time-out The ARQ Discard message of BSN most rearward.
  4. 4. method as claimed in claim 3, it is characterised in that send institute after life cycle delay timer time-out ARQ Discard message is stated, afterwards, in addition to：Start the retransmission timer of current data block, in retransmission timer time-out When not receiving the confirmation of the ARQ Discard message afterwards, then check that whetheing there is other has life cycle delay timing The data block of device, if it is not, directly retransmitting the ARQ Discard message；If so, then wait other data blocks The ARQ Discard message of the BSN most rearward is retransmitted after lifetime timer time-out.
  5. 5. method as claimed in claim 4, it is characterised in that one life cycle delay timer of the startup, specific bag Include：The feedback message of current data block is not received before lifetime timer time-out, then records the current data The BSN of block, and start a life cycle delay timer.
  6. A kind of 6. ARQ Discard message optimisation equipment, it is characterised in that including：
    First timer start unit, for starting the Life Cycle of the current data block after current data block is transmitted Phase timer；
    First message transmitting element, for being sent after the lifetime timer time-out after one section of predetermined duration ARQ Discard message；
    The first message transmitting element, is additionally operable to after the lifetime timer time-out, and it is reached in predetermined duration Before, there is the lifetime timer of other data blocks overtime, then update the BSN of the ARQ Discard message；In preset time After arrival, the ARQ Discard message with newest BSN is sent.
  7. 7. equipment as claimed in claim 6, it is characterised in that the first message retransmission unit, specifically include：
    Second timer promoter unit, it is fixed for starting a life cycle delay after the lifetime timer time-out When device；
    Second message transmission sub-unit, for sending the ARQ after life cycle delay timer time-out Discard message.
  8. 8. equipment as claimed in claim 7, it is characterised in that the second message transmission sub-unit, be used for：
    If there is no the lifetime timer time-out of other data blocks before the life cycle delay timer time-out, ARQ Discard message is directly transmitted after life cycle delay timer time-out；
    If there is the lifetime timer time-out of other data blocks before the life cycle delay timer time-out, more The block sequence number BSN of the new ARQ Discard message, described in the transmission afterwards of life cycle delay timer time-out The ARQ Discard message of BSN most rearward.
  9. 9. equipment as claimed in claim 8, it is characterised in that the first message retransmission unit also includes：
    3rd timer promoter unit, for starting the retransmission timer of current data block；
    3rd retransmitting message subelement, for not receiving the ARQ Discard message after the retransmission timer time-out Feedback message when, check that whetheing there is other has the data block of life cycle delay timer, if it is not, directly retransmit The ARQ Discard message of transmission；If so, described in being retransmitted after then waiting the lifetime timer time-out of other data blocks The ARQ Discard message of BSN most rearward.
  10. 10. equipment as claimed in claim 9, it is characterised in that the second timer promoter unit, for when the life The feedback message of current data block is not received before life cycle timer time-out, then records the BSN of the current data block, and open Move a life cycle delay timer.
CN201110218416.7A 2011-08-01 2011-08-01 The method and apparatus of ARQ Discard message optimisations Expired - Fee Related CN102916787B (en)

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PCT/CN2012/073427 WO2012155708A1 (en) 2011-08-01 2012-03-31 Method and device for optimizing arq discard message

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