CN101291331A - Method for radio communication system for improving reordering function and its related device - Google Patents
Method for radio communication system for improving reordering function and its related device Download PDFInfo
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- CN101291331A CN101291331A CNA200810092791XA CN200810092791A CN101291331A CN 101291331 A CN101291331 A CN 101291331A CN A200810092791X A CNA200810092791X A CN A200810092791XA CN 200810092791 A CN200810092791 A CN 200810092791A CN 101291331 A CN101291331 A CN 101291331A
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Abstract
A method for improving a reordering functionality in a wireless communications system comprises configuring a reset timer, utilized for controlling the reset of a reordering functionality of a protocol entity, reassembling all received protocol data units in the protocol entity with previously stored protocol data unit segments, and discarding all protocol data unit segments that cannot be reassembled in the protocol entity.
Description
Technical field
The present invention relates to a kind of method and relevant apparatus thereof that is used for radio communication system for improving reordering function, relate in particular to the method and the relevant apparatus thereof that improve reordering function when an a kind of cell forward access state in a wireless communication system uses a high-speed down link receiving function.
Background technology
The 3G (Third Generation) Moblie technology adopts Wideband Code Division Multiple Access (WCDMA) (Wideband Code DivisionMultiple Access, WCDMA) wireless access way, it is in order to provide the multi-medium data transmission of height spectrum utilization efficiency, borderless coverage rate and high-quality, two-forty, simultaneously more can satisfy various QoS service request simultaneously, the service of rubber-like variation transmitted in both directions is provided, and preferable communication quality is provided, effectively reduce communication interruption rate.
In the prior art, (Radio Link Control, RLC) (Protocol Data Unit, length PDU) is all identical for layer all protocol Data Unit of being exported in Radio Link control.Yet, so the practice can reduce the treatment effeciency of frequency range service efficiency and grouped data, particularly be unfavorable for the application of high speed transmission system, high-speed downlink packet as 3-G (Generation Three mobile communication system) inserts (High SpeedDownlink Package Access, HSDPA) and High Speed Uplink Packet insert (High SpeedUplink Package Access, HSUPA).Therefore, high-speed transfer at 3-G (Generation Three mobile communication system) is used, (the 3rd Generation Partnership Project of 3G (Third Generation) Moblie alliance, 3GPP) to wireless chain control layer in the high speed downlink packet access technology and MAC layer (Media Access Control, MAC) make amendment, it mainly comprises the wireless link control protocol data cell of employing " variable " length, and provide cutting (Segmentation) function of protocol Data Unit in MAC layer, with the service efficiency of raising frequency range and the treatment effeciency of classified data, and then make multiple-input and multiple-output (Multi-input Multi-output, MIMO) and the high transfer rate that brings of physical layer technology such as high order modulation technology become possibility.
Therefore, 3G (Third Generation) Moblie alliance has increased enhanced high-speed media interviews control (MAC-ehs) protocol entity newly in MAC layer, with the cutting of supporting the variable-length wireless link control protocol data cell, (Reassembly) reorders and recombinate.In addition, above-mentioned enhanced high-speed visit access control protocol entity in addition can be in a Transmission Time Interval (Transmission Time Interval, TTI) in data multitask to an enhanced high-speed of a plurality of Priority Queues is visited access control protocol data cell (MAC-ehs PDU), to improve the flexibility of data dispatch.About the detailed operation mode of enhanced high-speed media interviews controlled entity, can control the communication protocol standard with reference to the media interviews that 3G (Third Generation) Moblie alliance is formulated, do not give unnecessary details at this.
Based on the high-speed down link access technique, 3G (Third Generation) Moblie alliance controls online mode (Radio Resource Control Connected Mode at Radio Resource, RRC Connected Mode) cell forward (CELL_FACH) state that accesses provides a high-speed downlink shared channel receiving function (hereinafter to be referred as the high-speed down link receiving function), it allows client (the User Equipment under this state, UE) utilize high-speed downlink shared channel (High Speed Downlink Shared Channel, HS-DSCH), and cooperation High-Speed Shared Control Channel (Shared Control Channel for HS-DSCH, HS-SCCH) receiving downlink data is to improve maximum data rate, the signaling transmission delay, state exchange postpones and number of clients can be supported in the sub-district.
The communication protocol standard of being formulated according to 3G (Third Generation) Moblie alliance, when client when the cell forward access state is opened the high-speed downlink shared channel receiving function, because network terminal can't confirm whether receiving terminal successfully receives the grouping that it transmitted, therefore successfully receive the chance of grouping in order to increase client, network terminal can regularly retransmit the grouping that it had transmitted by the regular retransmission mechanism of a programmed algorithm.In this case, these groupings need be handled and reset to client, reaches the upper strata so that it is passed in order.
Therefore, can correctly handle service content in order to make client, the reordering function of above-mentioned enhanced high-speed media interviews controlled entity need can according to the sequence number (SequenceNumber) of reception protocol Data Unit carry out protocol Data Unit deletion, sort and running such as upload, separate sources (base station) protocol Data Unit output or that (reaching) same source repeats to transmit is combined into the protocol Data Unit sequence of single order, and be uploaded to the upper-layer protocol entity efficiently, and then avoid the delay and the mistake of received data.Under this function, the detailed operation mode about the reordering function of enhanced high-speed media interviews controlled entity please refer to following explanation.
At first, defined following state variable, timer and protocol parameter in the above-mentioned communication protocol standard:
1, variable next_expected_TSN: next expection of expression reordering function receives transmission sequence number, and its initial value is 0.
2, variable R cvWindow_UpperEdge: the pairing sequence number of receiver window upper limb of expression reordering function, its value equals to receive (with modulo operation) maximum sequence number of protocol Data Unit, and its initial value then is made as 63.
3, timer T1: the time that the protocol Data Unit that does not receive in regular turn in the receiver window is uploaded in expression, in order to avoid postponing to upload the protocol Data Unit that has received.
4, variable T1_TSN: expression does not receive in regular turn in the receiver window and starts the pairing sequence number of protocol Data Unit of timer T1.
5, parameters R eceiver_Window_Size: the size of the receiver window of expression reordering function, its value is set by the upper strata.
From the above, under the situation that does not advance receiver window, but the scope of the receiver window Receive sequence number of reordering function will be by (RcvWindow_UpperEdge-Receiver_Window_Size+1) to RcvWindow_UpperEdge.When client when the cell forward access state uses the high-speed downlink shared channel receiving function, if the sequence number SN of the protocol Data Unit that client received meets variable next_expected_TSN, reordering function will be uploaded this protocol Data Unit to one upper strata reorganization protocol entity and recombinate, and the value of variable next_expected_TSN is added 1.If the sequence number SN of the protocol Data Unit that client received drops in the receiver window and less than variable next_expected_TSN, reordering function will be deleted this protocol Data Unit; On the contrary, if the sequence number of this protocol Data Unit drops in the receiver window and greater than variable next_expected_TSN, then temporary this protocol Data Unit of reordering function.On the other hand, if the sequence number SN of this protocol Data Unit drops on outside the receiver window, reordering function then is set at variable R cvWindow_UpperEdge the sequence number SN of this protocol Data Unit to advance receiver window, and if variable next_expected_TSN less than (RcvWindow_UpperEdge-Receiver_Window_Size+1), then is made as (RcvWindow_UpperEdge-Receiver_Window_Size+1) with variable next_expected_TSN.
About the operation of timer T1, please continue with reference to following explanation.If client receives sequence number and is not activated as yet greater than protocol Data Unit and the timer T1 of variable next_expected_TSN, reordering function starts timer T1, and variable T1_TSN is set at the sequence number of this protocol Data Unit.In timer T1 expiration (Expiry) before, if the pairing protocol Data Unit of variable T1_TSN can be uploaded (for example variable next_expected_TSN is advanced to the pairing sequence number of variable T1_TSN), reordering function stops timing with this timer T1.On the other hand, when timer T1 expiration and variable next_expected_TSN are not advanced to the pairing sequence number of variable T1_TSN yet, reordering function then sequence number has been received protocol Data Unit less than all of variable T1_TSN and all have received protocol Data Unit continuously and are uploaded to the upper strata and recombinate with sequence number does not receive protocol Data Unit less than next, and variable next_expected_TSN is updated to next does not receive the pairing sequence number of protocol Data Unit.When timer T1 stops timing or expiration, if still have the protocol Data Unit that has received and do not uploaded in the receiver window scope, reordering function then variable T1_TSN is updated to those not the uploading protocol data cell the maximum sequence number in the corresponding sequence number, and restart timer T1.
In other words, after timer T1 picks up counting, if client before timer T1 expiration, fail to upload have variable T1_TSN the protocol Data Unit of corresponding sequence number, reordering function then is considered as sequence number to lose less than variable T1_TSN and the not successful protocol Data Unit that receives, and with sequence number does not receive protocol Data Unit less than next all have received protocol Data Unit continuously and are uploaded to the upper strata and recombinate, take place with the situation of avoiding data delay.In this case, next expection of reordering function sequence number (being variable next_expected_TSN) of receiving protocol Data Unit will be updated to do not receive or not the uploading protocol data cell the smallest sequence number in the corresponding sequence number.If still have the protocol Data Unit that has received and do not uploaded in the receiver window scope, reordering function will repeat similar operation and be uploaded up to the pairing protocol Data Unit of variable R cvWindow_UpperEdge, and variable next_expected_TSN is advanced into till next transmission sequence number of variable R cvWindow_UpperEdge.
From the above, under normal circumstances, when getting over preface uploading protocol data when for example reordering function is initial, when client can receive protocol Data Unit in regular turn or because of timer T1 expiration, variable next_expected_TSN can be than variable R cvWindow_UpperEdge big by 1 (with modulo operation).In this case, (as surpassing the required time of timer T1 expiration) do not receive any protocol Data Unit if client surpasses a period of time, for example client temporarily shifts out the service range of all serving BSs, when client reenters the base station services scope and receives the protocol Data Unit that drops in the receiver window scope, according to above-mentioned standard, reordering function will be deleted this protocol Data Unit, and cause the situation of error in data to take place.
For instance, please refer to Fig. 1, Fig. 1 is the client of known 3-G (Generation Three mobile communication system) when receiving protocol Data Unit, the correlated variables of reordering function and the schematic diagram of sequence number.In Fig. 1, suppose that parameters R eceiver_Window_Size equals 6, the scope of expression receiver window between the asterisk (*), R represents variable next_expected_TSN, x represents in the receiver window scope protocol Data Unit that do not receive or uploaded, H represents variable R cvWindow_UpperEdge, and T represents variable T1_TSN.At first, it is 6 protocol Data Unit that client receives sequence number at time point TP1, therefore reordering function is made as 6 with the propelling receiver window with variable R cvWindow_UpperEdge, and variable next_expected_TSN is made as the receivable smallest sequence number of receiver window.Because this fashion does not have any timer T1 to be activated and the sequence number of the protocol Data Unit that receives greater than variable next_expected_TSN, so reordering function can start timer T1, and variable T1_TSN is set at 6.Then, when client in time point TP2 when to receive sequence number be 4 protocol Data Unit, because its sequence number falls within the receiver window scope and greater than variable next_expected_TSN, reordering function will be kept in this protocol Data Unit.When client in time point TP3 when to receive sequence number simultaneously be 5,6,7 protocol Data Unit, because being 7 protocol Data Unit, sequence number falls within outside the receiver window, therefore reordering function is except temporary sequence number is 5,6 protocol Data Unit, in addition variable R cvWindow_UpperEdge and variable next_expected_TSN are made as 7 and 2 respectively, to push ahead receiver window.Afterwards, when client in time point TP4 when to receive sequence number be 2 protocol Data Unit, because it meets the value of variable next_expected_TSN, reordering function will be uploaded this protocol Data Unit, and variable next_expected_TSN is pushed ahead a sequence number.
Suppose that timer T1 expires when time point TP5, because variable T1_TSN is still greater than variable next_expected_TSN, therefore reordering function is uploaded sequence number all has been received protocol Data Unit less than variable T1_TSN and less than next does not receive protocol Data Unit (being sequence number 8), and variable next_expected_TSN is set at next does not receive the pairing sequence number of protocol Data Unit.In this case, if next client can receive protocol Data Unit in regular turn, reordering function will be pushed ahead receiver window in regular turn, and upload the protocol Data Unit that is received.For example, when client when time point TP6 receives the protocol Data Unit of sequence number 8, timer T1 can start at once and variable T1_TSN is made as 8, but because the value of variable next_expected_TSN also equals 8, therefore the protocol Data Unit of sequence number 8 will be delivered to the upper strata at once, and timer T1 stops timing.
Please continue with reference to figure 1, suppose that client does not receive any protocol Data Unit (for example greater than the required time of timer T1 expiration) in time point TP6 a period of time later, fall within protocol Data Unit receiver window scope in if client receives sequence number in time point TP7 this moment, for example sequence number is 5 protocol Data Unit, according to above-mentioned standard, this protocol Data Unit will be deleted in the unit that reorders, no matter and whether this protocol Data Unit is the network terminal protocol Data Unit of transmission recently, so will cause the situation of client data mistake to take place.Also there are similar situation in time point TP8 and TP9.
Therefore, in order to address the above problem, 3G (Third Generation) Moblie alliance is a newly-increased replacement timer Treset in reordering function, rebuilds the receiver window of client when being used to timer expiration, with the situation of avoiding protocol Data Unit to be deleted by mistake.According to the ordered media interviews control standard of 3G (Third Generation) Moblie alliance, when client when the cell forward access state is opened the high-speed downlink shared channel receiving function, if client correctly receives a protocol Data Unit and do not start any replacement timer Treset as yet, then start replacement timer Treset to pick up counting; On the contrary, replacement timer Treset has been activated if client correctly receives a protocol Data Unit, then restarts this replacement timer Treset.On the other hand, when replacement timer Treset expires, then variable next_expected_TSN and variable R cvWindow_UpperEdge are reset to initial value.
That is to say that when client does not receive any protocol Data Unit and the timer Treset that causes resetting when expiration in a period of time, client will be rebuild the receiver window of reordering function, to avoid the situation generation of wrong deletion protocol Data Unit.Yet, prior art is not deleted stored protocol Data Unit fragment in the upper strata reorganization protocol entity when rebuilding the receiver window of reordering function, in this case, the protocol Data Unit of follow-up reception may be connected in series mistakenly with the protocol Data Unit fragment that reorganization remains in the protocol entity, and produces wrong data.On the other hand, the replacement timer Treset that prior art is increased newly in system will make the more complicated of system's change, and then consumes the limited calculation resources of client.
In addition, prior art is in initial or when rebuilding the receiver window of reordering function, the timer Treset that for example resets expiration or upper layer communication protocol requirement are reset, initial value with variable next_expected_TSN and variable R cvWindow_UpperEdge is made as 0 and 63 respectively, in this case, if client in initial or rebuild receiver window after receive sequence number and fall within protocol Data Unit (for example protocol Data Unit of sequence number 62) in the receiver window scope, reordering function will be deleted this protocol Data Unit, so also can cause the situation of error in data to take place.
Summary of the invention
Therefore, the invention provides a kind of method and relevant apparatus thereof that is used for a radio communication system for improving reordering function, to promote the data transmission efficiency of using a high-speed downlink function in a front access state.
The present invention discloses the method that an a kind of client that is used for a wireless communication system is improved reordering function, and this method includes sets a replacement timer, and this replacement timer is used for controlling the reordering function in replacement one protocol entity; When resetting this reordering function, all protocol Data Units that received in this protocol entity and the previous protocol Data Unit fragment that stores are recombinated in this replacement timer expiration; And delete all protocol Data Unit fragments of not recombinated in this protocol entity.
The present invention also discloses a kind of communicator that is used for a wireless communication system, in order to improve reordering function.This communicator includes a control circuit, is used for realizing the function of this communicator; One central processing unit is located in this control circuit, is used for carrying out a program code to control this control circuit; And a storage device, be located in this control circuit and be coupled to this central processing unit, be used for storing this program code.Wherein, include in this program code and set a replacement timer, this replacement timer is used for controlling the reordering function in replacement one protocol entity; When resetting this protocol entity, all protocol Data Units that received in this protocol entity and the previous protocol Data Unit fragment that stores are recombinated in this replacement timer expiration; And delete all protocol Data Unit fragments of not recombinated in this protocol entity.
The present invention also discloses the method that an a kind of client that is used for a wireless communication system is improved reordering function, this method includes sets a first timer, and the receiver window that this first timer is used for controlling a reordering function discharges the protocol Data Unit that has received; When this client meets a default situation, start this first timer; And when in the expiration of this first timer and this receiver window, not having any protocol Data Unit that has received, if this reordering function receives a protocol Data Unit, then restart this first timer and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit.
The present invention also discloses a kind of communicator that is used for a wireless communication system, in order to improve reordering function.This communicator includes a control circuit, is used for realizing the function of this communicator; One central processing unit is located in this control circuit, is used for carrying out a program code to control this control circuit; And a storage device, be located in this control circuit and be coupled to this central processing unit, be used for storing this program code.Wherein, include in this program code and set a first timer, the receiver window that this first timer is used for controlling a reordering function discharges a protocol Data Unit sequence that is received; When this client meets a default situation, start this first timer; And when in the expiration of this first timer and this receiver window, not having any protocol Data Unit that has received, if this reordering function receives a protocol Data Unit, then restart this first timer and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit.
The present invention also discloses the method that an a kind of client that is used for a wireless communication system is improved reordering function, this method includes sets a first timer, and the receiver window that this first timer is used for controlling a reordering function discharges the protocol Data Unit that has received; In next expection of this reordering function receive transmission sequence number be this receiver window a upper limb during next transmission sequence number of corresponding transmission sequence number, start a second timer; And after this second timer expiration,, then restart this first timer and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit if this reordering function receives a protocol Data Unit.
The present invention also discloses a kind of communicator that is used for a wireless communication system, in order to improve reordering function.This communicator includes a control circuit, is used for realizing the function of this communicator; One central processing unit is located in this control circuit, is used for carrying out a program code to control this control circuit; And a storage device, be located in this control circuit and be coupled to this central processing unit, be used for storing this program code.Wherein, include in this program code and set a first timer, the receiver window that this first timer is used for controlling a reordering function discharges the protocol Data Unit that has received; In next expection of this reordering function receive transmission sequence number be this receiver window a upper limb during next transmission sequence number of corresponding transmission sequence number, start a second timer; And after this second timer expiration,, then restart this first timer and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit if this reordering function receives a protocol Data Unit.
The present invention also discloses the method that an a kind of network terminal that is used for a wireless communication system is improved reordering function, and this method includes the transmission sequence number sequence of stopping using, and this transmission sequence number sequence includes a plurality of continuous transmission sequence numbers; And a plurality of transmission sequence numbers that will fall within the outer the same side of this transmission sequence number sequence are distributed to the formed a plurality of protocol Data Units of same client data.
The present invention also discloses a kind of communicator that is used for a wireless communication system, in order to improve reordering function.This communicator includes a control circuit, is used for realizing the function of this communicator; One central processing unit is located in this control circuit, is used for carrying out a program code to control this control circuit; And a storage device, be located in this control circuit and be coupled to this central processing unit, be used for storing this program code.Wherein, include the transmission sequence number sequence of stopping using in this program code, this transmission sequence number sequence includes a plurality of continuous transmission sequence numbers; And a plurality of transmission sequence numbers that will fall within the outer the same side of this transmission sequence number sequence are distributed to the formed a plurality of protocol Data Units of same client data.
Description of drawings
Fig. 1 is the client of known 3-G (Generation Three mobile communication system) when receiving protocol Data Unit, the correlated variables of reordering function and the schematic diagram of sequence number.
Fig. 2 is the schematic diagram of a wireless communication system.
Fig. 3 is the functional block diagram of a radio communication device.
Fig. 4 is the schematic diagram of program code among Fig. 3.
Fig. 5 is the schematic diagram of first embodiment of the invention flow process.
Fig. 6 is the schematic diagram of second embodiment of the invention flow process.
Fig. 7 is the schematic diagram of third embodiment of the invention flow process.
Fig. 8 is the schematic diagram of fourth embodiment of the invention flow process.
[primary clustering symbol description]
The Receiver_Window_Size parameter
Next_expected_TSN, RcvWindow_UpperEdge, T1_TSN variable
T1, Treset timer
TP1～TP9 time point
1200 wireless communication systems
100 radio communication devices
102 input units
104 output devices
106 control circuits
108 central processing units
110 storage devices
112 program codes
114 transceivers
200 application layers
202 the 3rd layers
206 second layers
218 ground floors
220 reordering function reconfiguration procedure codes
222 enhanced high-speed medium access control protocol unit
30,40,50,60 flow processs
300、302、304、306、308、400、402、404、406、408、500、502、504、
506,508,600,602,604,606 steps
Embodiment
Please refer to Fig. 2, Fig. 2 is the schematic diagram of a wireless communication system 1200.Wireless communication system 1200 preferably is the high-speed packet access system of a 3-G (Generation Three mobile communication system), and it is made up of a network terminal and a plurality of client briefly.In Fig. 2, network terminal and client are used for illustrating the framework of wireless communication system 1200; In fact, the visual different demands of network terminal include a plurality of base stations, radio network controller etc.; Client then may be equipment such as mobile phone, computer system.
Please refer to Fig. 3, Fig. 3 is the functional block diagram of a radio communication device 100.Radio communication device 100 can be used for realizing client or network terminal among Fig. 2.For the sake of clarity, Fig. 3 only draws an input unit 102, an output device 104, a control circuit 106, a central processing unit 108, a storage device 110, a program code 112 and a transceiver 114 of radio communication device 100.In radio communication device 100, control circuit 106 sees through central processing unit 108 and carries out the program code 112 that is stored in the storage device 110, thereby the running of control radio communication device 100, it can see through the signal that input unit 102 (as keyboard) receives user's input, or sees through signals such as output device 104 (as screen, loudspeaker etc.) output picture, sound.Transceiver 114 is in order to reception or send wireless signal, and the signal that is received is sent to control circuit 106, or the signal that control circuit 106 is produced is exported with wireless system.In other words, with the framework of communication protocol, transceiver 114 can be considered the part of ground floor, and control circuit 106 then is used for realizing the function of the second layer and the 3rd layer.
Please continue with reference to figure 4, Fig. 4 is the schematic diagram of program code 112 among Fig. 3.Program code 112 includes an application layer 200, one the 3rd layer of 202, one second layer 206 is connected in a ground floor 218.The second layer 206 includes enhanced high-speed media interviews control (MAC-ehs) protocol element 222, is used to provide radio communication device 100 and uses a high-speed downlink shared channel receiving function in cell forward access (CELL_FACH) state.In this case, one reordering function of enhanced high-speed medium access control protocol unit 222 need can according to the sequence number (Sequence Number) of reception protocol Data Unit carry out protocol Data Unit deletion, sort and running such as upload, separate sources (base station) protocol Data Unit output or that (reaching) same source repeats to transmit is combined into the protocol Data Unit sequence of single order, and be uploaded to the upper-layer protocol entity efficiently, and then avoid the delay and the mistake of received data.
When radio communication device 100 when cell forward access state (CELL_FACH) is enabled the high-speed downlink shared channel receiving function, if radio communication device 100 does not receive any protocol Data Unit in a period of time, radio communication device 100 needs to rebuild the receiver window of reordering function, takes place with the situation of avoiding wrong deletion protocol Data Unit.In this case, the embodiment of the invention provides a reordering function reconfiguration procedure code 220 in program code 112, in order to correctly to carry out the reconstruction of reordering function.Please refer to Fig. 5, Fig. 5 is the schematic diagram of first embodiment of the invention flow process 30.Flow process 30 is used for a client of a wireless communication system and improves reordering function, and it can be compiled as reordering function reconfiguration procedure code 220, and it comprises following steps:
Step 300: beginning.
Step 302: set a replacement timer Treset, it is used for controlling the reordering function in replacement one protocol entity.
Step 304: when resetting this reordering function, all protocol Data Units that received in this protocol entity and the previous protocol Data Unit fragment that stores are recombinated in replacement timer Treset expiration (Expiry).
Step 306: delete all protocol Data Unit fragments of not recombinated in this protocol entity.
Step 308: finish.
According to flow process 30, the embodiment of the invention is at first set replacement timer Treset, and it is used for rebuilding the receiver window of reordering function when expiration, takes place with the situation of avoiding wrong deletion protocol Data Unit.When resetting this reordering function when replacement timer expiration (Expiry), the embodiment of the invention is recombinated all protocol Data Units that received in this protocol entity and the previous protocol Data Unit fragment that stores, and deletes all protocol Data Unit fragments of not recombinated in this protocol entity.
Preferably, all protocol Data Units that received in this protocol entity and the previous protocol Data Unit fragment that stores are recombinated, and other comprises a upper-layer protocol entity that the complete upper-layer protocol data cell in all protocol Data Units that received in this protocol entity is delivered to this protocol entity.Certainly, the embodiment of the invention also can will complete successfully the upper-layer protocol entity that the formed complete upper-layer protocol data cell of reorganization is delivered to this protocol entity.
Therefore, when radio communication device 100 is rebuild reordering function in replacement timer Treset expiration, the embodiment of the invention is recombinated the protocol Data Unit that all have received in the protocol entity in addition with the previous protocol Data Unit fragment that stores, and deletes all protocol Data Unit fragments of not recombinated in this protocol entity.Thus, after the embodiment of the invention can avoid the receiver window of reordering function to rebuild, the protocol Data Unit fragment that remains in the protocol Data Unit of follow-up reception and the reorganization protocol entity was connected in series mistakenly, and produced the data of mistake.
On the other hand, because the related algorithm of newly-increased replacement timer Treset will make system become more complicated, therefore the embodiment of the invention can provide a reordering function reconfiguration procedure code 220 in program code 112, being used for a period of time rebuilds the receiver window of reordering function when not receiving any protocol Data Unit, takes place with the situation of avoiding protocol Data Unit to be deleted by mistake.Please refer to Fig. 6, Fig. 6 is the schematic diagram of second embodiment of the invention flow process 40.Flow process 40 is used for a client of a wireless communication system and improves reordering function, and it can be compiled as reordering function reconfiguration procedure code 220, and it comprises following steps:
Step 400: beginning.
Step 402: set a first timer T1, its receiver window that is used for controlling a reordering function discharges the protocol Data Unit that has received.
Step 404: when client meets a default situation, start this first timer T1.
Step 406: when in this first timer T1 expiration and this receiver window, not having any protocol Data Unit that has received, if this reordering function receives a protocol Data Unit, then restart this first timer T1 and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit.
Step 408: finish.
According to flow process 40, the embodiment of the invention is at first set a first timer T1, and its receiver window that is used for controlling a reordering function discharges the protocol Data Unit that has received, to avoid postponing to upload the protocol Data Unit that has received.If when client meets a default situation, start this first timer T1.Should default situation be that this receiver window receives transmission sequence number and starts as yet greater than one first protocol Data Unit and this first timer T1 that next expection of this receiver window receives transmission sequence number, or this next expection of this receiver window receive transmission sequence number be this receiver window upper limb next transmission sequence number of corresponding transmission sequence number.When not having any protocol Data Unit that has received in this first timer T1 expiration and this receiver window, if this reordering function receives a protocol Data Unit, then restart this first timer T1 and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit.
Compared to prior art, the timer T1 of the embodiment of the invention in addition when next expection of receiver window receives transmission sequence number and is next transmission sequence number of the corresponding transmission sequence number of receiver window upper limb institute, startup first timer T1.In this case, when not having any protocol Data Unit that has received in this first timer T1 expiration and the receiver window, if client receives a protocol Data Unit, then this protocol Data Unit is considered as an initial protocol Data Unit that receives, reseting the receiver window of reordering function, and restart first timer T1.
In other words, the embodiment of the invention is by reusing timer T1, in next expection of receiver window receive transmission sequence number be receiver window the corresponding transmission sequence number of upper limb institute next transmission sequence number and when not receiving protocol Data Unit above a period of time, transmission sequence number according to the reception protocol Data Unit, rebuild the receiver window of reordering function, take place with the situation of avoiding the wrong deletion protocol Data Unit that received.Thus, owing to need not increase above-mentioned replacement timer Treset newly in the system, the embodiment of the invention significantly reduces the complexity of system.
Certainly, the embodiment of the invention includes in addition when this first protocol Data Unit is delivered to the upper strata, stops this first timer T1; When this first timer T1 stops still having the protocol Data Unit that has received in timing and this receiver window, restart this first timer T1; And when in this first timer T1 expiration and this receiver window, having the protocol Data Unit that has received, with transmission sequence number in this receiver window less than this first protocol Data Unit all of corresponding transmission sequence number received protocol Data Unit and transmission sequence number less than one next do not receive protocol Data Unit all received protocol Data Unit and be delivered to the upper strata, and this next expection of this receiver window is received transmission sequence number be updated to this next do not receive the pairing sequence number of protocol Data Unit.Above-mentioned associative operation is similar to the operation of timer T1 in the prior art, does not give unnecessary details in this.
Preferably, the embodiment of the invention resets the receiver window of reordering function according to the protocol Data Unit that is received, one upper limb of this receiver window is set at pairing this transmission sequence number of this protocol Data Unit, and next expection of reordering function is received the lower edge that transmission sequence number is set at this receiver window.
Similarly, please refer to Fig. 7, Fig. 7 is the schematic diagram of third embodiment of the invention flow process 50.Flow process 50 is used for a client of a wireless communication system and improves reordering function, and it can be compiled as reordering function reconfiguration procedure code 220, and it comprises following steps:
Step 500: beginning.
Step 502: set a first timer T1, its receiver window that is used for controlling a reordering function discharges the protocol Data Unit that has received.
Step 504: in next expection of reordering function receive transmission sequence number be one of receiver window upper limb during next transmission sequence number of corresponding transmission sequence number, start a second timer.
Step 506: after this second timer expiration (Expiry),, then restart first timer T1 and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit if this reordering function receives a protocol Data Unit.
Step 508: finish.
According to flow process 50, when next expection of reordering function receive transmission sequence number be receiver window a upper limb during next transmission sequence number of corresponding transmission sequence number, the embodiment of the invention starts a second timer.After this second timer expiration,, then restart first timer T1 and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit if reordering function receives a protocol Data Unit.
Therefore, compared to flow process 40, the embodiment of the invention is in addition by second timer, in next expection of receiver window receive transmission sequence number be receiver window the corresponding transmission sequence number of upper limb institute next transmission sequence number and when not receiving protocol Data Unit above a period of time, transmission sequence number according to the reception protocol Data Unit, rebuild the receiver window of reordering function, take place with the situation of avoiding the wrong deletion protocol Data Unit that received.Corresponding variation like this also belongs to scope of the present invention.
In addition, please refer to Fig. 8, Fig. 8 is the schematic diagram of fourth embodiment of the invention flow process 60.Flow process 60 is used for a network terminal of a wireless communication system and improves reordering function, and it also can be compiled as reordering function reconfiguration procedure code 220, and it comprises following steps:
Step 600: beginning.
Step 602: the transmission sequence number sequence of stopping using, this transmission sequence number sequence includes a plurality of continuous transmission sequence numbers, and it is corresponding to a reorder initial range of receiver window of the defined client of this wireless communication system.
Step 604: a plurality of transmission sequence numbers that will fall within the outer the same side of this transmission sequence number sequence are distributed to the formed a plurality of protocol Data Units of same client data.
Step 606: finish.
According to flow process 60, the embodiment of the invention is before network terminal transmission client data, the transmission sequence number sequence of stopping using, wherein this transmission sequence number sequence includes a plurality of continuous transmission sequence numbers, corresponding to a reorder initial range of receiver window of the defined client of this wireless communication system.Then, when network terminal was distributed transmission sequence number, the embodiment of the invention can be distributed to the formed a plurality of protocol Data Units of same client data with a plurality of transmission sequence numbers that fall within the outer the same side of this transmission sequence number sequence.
Thus, the embodiment of the invention can be under the prerequisite of the setting means that does not change the client reordering function, by the mode of the transmission sequence number sequence of stopping using, avoid client protocol Data Unit that receives when initial reordering function to suffer the situation of wrong deletion.In addition, receiving protocol Data Unit can recombinate smoothly in order to make, the embodiment of the invention preferably can be distributed to same client data with a plurality of transmission sequence numbers that fall within the outer the same side of this transmission sequence number sequence, and (for example a Radio Resource is controlled (RadioResource Control, RRC) information or the complete formed a plurality of protocol Data Units of top service data cell (Service DataUnit, SDU)).
Please note, reordering function of the present invention is not limited only to the reordering function in the enhanced high-speed medium access control protocol entity, any protocol entity with reordering function, for example Radio Link is controlled (Radio Link Control, RLC) protocol entity also belongs to scope of the present invention.
In sum, the invention provides a kind of method and relevant apparatus thereof that is used for a radio communication system for improving reordering function, with improving data transmission efficiency.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claims of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (38)
1. a client that is used for a wireless communication system is improved the method for reordering function, includes:
Set a replacement timer, this replacement timer is used for controlling the reordering function in replacement one protocol entity;
When resetting this reordering function, all protocol Data Units that received in this protocol entity and the previous protocol Data Unit fragment that stores are recombinated in this replacement timer expiration; And
Delete all protocol Data Unit fragments of not recombinated in this protocol entity.
2. the method for claim 1 wherein should the replacement timer be used during exclusive CELL_DCH RRC status in a sub-district at this client not operation.
3. the method for claim 1, wherein all protocol Data Units that received in this protocol entity and the previous protocol Data Unit fragment that stores are recombinated, also comprise a upper-layer protocol entity that the complete upper-layer protocol data cell in all protocol Data Units that received in this protocol entity is delivered to this protocol entity.
4. the method for claim 1, it also comprises will complete successfully the upper-layer protocol entity that the formed complete upper-layer protocol data cell of reorganization is delivered to this protocol entity.
5. the method for claim 1, wherein this protocol entity is an enhanced high-speed media interviews control MAC-ehs protocol entity.
6. communicator that is used for a wireless communication system, in order to improve reordering function, this communicator includes:
One control circuit is used for realizing the function of this communicator;
One central processing unit is located in this control circuit, is used for carrying out a program code to control this control circuit; And
One storage device is located in this control circuit and is coupled to this central processing unit, is used for storing this program code; Wherein include in this program code:
Set a replacement timer, this replacement timer is used for controlling the reordering function in replacement one protocol entity;
When resetting this protocol entity, all protocol Data Units that received in this protocol entity and the previous protocol Data Unit fragment that stores are recombinated in this replacement timer expiration; And
Delete all protocol Data Unit fragments of not recombinated in this protocol entity.
7. communicator as claimed in claim 6 wherein should the replacement timer in this program code uses during exclusive CELL_DCH RRC status in a sub-district at this client not operation.
8. communicator as claimed in claim 6, wherein in this program code all protocol Data Units that received in this protocol entity and the previous protocol Data Unit fragment that stores are recombinated, also comprise a upper-layer protocol entity that the complete upper-layer protocol data cell in all protocol Data Units that received in this protocol entity is delivered to this protocol entity.
9. communicator as claimed in claim 6, wherein this program code also comprises and will complete successfully the upper-layer protocol entity that the formed complete upper-layer protocol data cell of reorganization is delivered to this protocol entity.
10. communicator as claimed in claim 6, wherein this protocol entity is an enhanced high-speed media interviews control MAC-ehs protocol entity in this program code.
11. a client that is used for a wireless communication system is improved the method for reordering function, includes:
Set a first timer, the receiver window that this first timer is used for controlling a reordering function discharges the protocol Data Unit that has received;
When this client meets a default situation, start this first timer; And
When in the expiration of this first timer and this receiver window, not having any protocol Data Unit that has received, if this reordering function receives a protocol Data Unit, then restart this first timer and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit.
12. method as claimed in claim 11, wherein should default situation be that this receiver window receives and has a transmission sequence number and start as yet greater than one first protocol Data Unit and this first timer that next expection of this receiver window receives transmission sequence number, or this next expection of this receiver window receive transmission sequence number be this receiver window upper limb next transmission sequence number of corresponding transmission sequence number.
13. method as claimed in claim 12, wherein when this first protocol Data Unit was delivered to the upper strata, this first timer stopped timing.
14. method as claimed in claim 13, it also comprises:
When this first timer stops still having the protocol Data Unit that has received in timing and this receiver window, restart this first timer.
15. method as claimed in claim 12, it also comprises:
When in this first timer expiration and this receiver window, having the protocol Data Unit that has received, with transmission sequence number in this receiver window less than this first protocol Data Unit all of corresponding transmission sequence number received protocol Data Unit and transmission sequence number less than one next do not receive protocol Data Unit all received protocol Data Unit and be delivered to the upper strata, and this next expection of this receiver window is received transmission sequence number be updated to this next do not receive the pairing sequence number of protocol Data Unit.
16. method as claimed in claim 11 wherein resets this receiver window according to pairing this transmission sequence number of this protocol Data Unit, comprises:
One upper limb of this receiver window is set at pairing this transmission sequence number of this protocol Data Unit; And
Next expection of this reordering function is received the lower edge that transmission sequence number is set at this receiver window.
17. method as claimed in claim 11, wherein this first timer uses during exclusive CELL_DCH RRC status in a sub-district at this client not operation.
18. a communicator that is used for a wireless communication system, in order to improve reordering function, this communicator includes:
One control circuit is used for realizing the function of this communicator;
One central processing unit is located in this control circuit, is used for carrying out a program code to control this control circuit; And
One storage device is located in this control circuit and is coupled to this central processing unit, is used for storing this program code; Wherein include in this program code:
Set a first timer, the receiver window that this first timer is used for controlling a reordering function discharges a protocol Data Unit sequence that is received;
When this client meets a default situation, start this first timer; And
When in the expiration of this first timer and this receiver window, not having any protocol Data Unit that has received, if this reordering function receives a protocol Data Unit, then restart this first timer and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit.
19. communicator as claimed in claim 18, wherein should default situation in this program code be that this receiver window receives and has a transmission sequence number and receive one first protocol Data Unit of transmission sequence number greater than next expection of this receiver window, or this next expection of this receiver window receive transmission sequence number be this receiver window upper limb next transmission sequence number of corresponding transmission sequence number.
20. communicator as claimed in claim 19, wherein in this program code when this first protocol Data Unit is delivered to the upper strata, this first timer stops timing.
21. communicator as claimed in claim 20, wherein this program code also comprises:
When this first timer stops still having the protocol Data Unit that has received in timing and this receiver window, restart this first timer.
22. communicator as claimed in claim 19, wherein this program code also comprises:
When in this first timer expiration and this receiver window, having the protocol Data Unit that has received, with transmission sequence number in this receiver window less than this first protocol Data Unit all of corresponding transmission sequence number received protocol Data Unit and transmission sequence number less than one next do not receive protocol Data Unit all received protocol Data Unit and be delivered to the upper strata, and this next expection of this receiver window is received transmission sequence number be updated to this next do not receive the pairing sequence number of protocol Data Unit.
23. communicator as claimed in claim 18 wherein resets this receiver window according to pairing this transmission sequence number of this protocol Data Unit in this program code, comprises:
One upper limb of this receiver window is set at pairing this transmission sequence number of this protocol Data Unit; And
Next expection of this reordering function is received the lower edge that transmission sequence number is set at this receiver window.
24. communicator as claimed in claim 18, wherein this first timer uses during exclusive CELL_DCH RRC status in a sub-district at this client not operation in this program code.
25. a client that is used for a wireless communication system is improved the method for reordering function, includes:
Set a first timer, the receiver window that this first timer is used for controlling a reordering function discharges the protocol Data Unit that has received;
In next expection of this reordering function receive transmission sequence number be this receiver window a upper limb during next transmission sequence number of corresponding transmission sequence number, start a second timer; And
After this second timer expiration,, then restart this first timer and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit if this reordering function receives a protocol Data Unit.
26. method as claimed in claim 25, wherein this second timer is this first timer.
27. method as claimed in claim 25 wherein resets this receiver window according to pairing this transmission sequence number of this protocol Data Unit, comprises:
This upper limb of this receiver window is set at pairing this transmission sequence number of this protocol Data Unit; And
This next expection of this reordering function is received the lower edge that transmission sequence number is set at this receiver window.
28. a communicator that is used for a wireless communication system, in order to improve reordering function, this communicator includes:
One control circuit is used for realizing the function of this communicator;
One central processing unit is located in this control circuit, is used for carrying out a program code to control this control circuit; And
One storage device is located in this control circuit and is coupled to this central processing unit, is used for storing this program code; Wherein include in this program code:
Set a first timer, the receiver window that this first timer is used for controlling a reordering function discharges the protocol Data Unit that has received;
In next expection of this reordering function receive transmission sequence number be this receiver window a upper limb during next transmission sequence number of corresponding transmission sequence number, start a second timer; And
After this second timer expiration,, then restart this first timer and reset this receiver window according to the pairing transmission sequence number of this protocol Data Unit if this reordering function receives a protocol Data Unit.
29. communicator as claimed in claim 28, wherein this second timer is this first timer in this program code.
30. communicator as claimed in claim 28 wherein resets this receiver window according to pairing this transmission sequence number of this protocol Data Unit in this program code, comprises:
This upper limb of this receiver window is set at pairing this transmission sequence number of this protocol Data Unit; And
This next expection of this reordering function is received the lower edge that transmission sequence number is set at this receiver window.
31. a network terminal that is used for a wireless communication system is improved the method for reordering function, includes:
An inactive transmission sequence number sequence, this transmission sequence number sequence includes a plurality of continuous transmission sequence numbers; And
The a plurality of transmission sequence numbers that fall within the outer the same side of this transmission sequence number sequence are distributed to the formed a plurality of protocol Data Units of same client data.
32. method as claimed in claim 31, wherein this client data is a radio resource control RRC information.
33. method as claimed in claim 31, wherein this client data is a complete top service data cell SDU.
34. method as claimed in claim 31, wherein these a plurality of continuous transmission sequence numbers are corresponding to a reorder initial range of receiver window of the defined client of this wireless communication system.
35. a communicator that is used for a wireless communication system, in order to improve reordering function, this communicator includes:
One control circuit is used for realizing the function of this communicator;
One central processing unit is located in this control circuit, is used for carrying out a program code to control this control circuit; And
One storage device is located in this control circuit and is coupled to this central processing unit, is used for storing this program code; Wherein include in this program code:
An inactive transmission sequence number sequence, this transmission sequence number sequence includes a plurality of continuous transmission sequence numbers; And
The a plurality of transmission sequence numbers that fall within the outer the same side of this transmission sequence number sequence are distributed to the formed a plurality of protocol Data Units of same client data.
36. communicator as claimed in claim 35, wherein this client data is a radio resource control RRC information in this program code.
37. communicator as claimed in claim 35, wherein this client data is a complete top service data cell SDU in this program code.
38. communicator as claimed in claim 35, wherein these a plurality of continuous transmission sequence numbers are corresponding to a reorder initial range of receiver window of the defined client of this wireless communication system in this program code.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US91291907P | 2007-04-19 | 2007-04-19 | |
| US60/912,919 | 2007-04-19 | ||
| US60/942,450 | 2007-06-06 | ||
| US60/945,947 | 2007-06-25 |
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|---|---|
| CN101291331A true CN101291331A (en) | 2008-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA200810092791XA Pending CN101291331A (en) | 2007-04-19 | 2008-04-18 | Method for radio communication system for improving reordering function and its related device |
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| CN (1) | CN101291331A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107079005A (en) * | 2014-12-18 | 2017-08-18 | Lg 电子株式会社 | PDCP is reconfigured in a wireless communication system to reorder the method and its equipment of timer |
| CN110515870A (en) * | 2019-08-09 | 2019-11-29 | 苏州浪潮智能科技有限公司 | A kind of method, equipment and the readable medium of the communication of server power supply front stage |
-
2008
- 2008-04-18 CN CNA200810092791XA patent/CN101291331A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107079005A (en) * | 2014-12-18 | 2017-08-18 | Lg 电子株式会社 | PDCP is reconfigured in a wireless communication system to reorder the method and its equipment of timer |
| US10873937B2 (en) | 2014-12-18 | 2020-12-22 | Lg Electronics Inc. | Method for reconfiguring a PDCP reordering timer in a wireless communication system and device therefor |
| CN110515870A (en) * | 2019-08-09 | 2019-11-29 | 苏州浪潮智能科技有限公司 | A kind of method, equipment and the readable medium of the communication of server power supply front stage |
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