CN100428663C - Method and system for detecting data lost number - Google Patents
Method and system for detecting data lost number Download PDFInfo
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- CN100428663C CN100428663C CNB2006100985155A CN200610098515A CN100428663C CN 100428663 C CN100428663 C CN 100428663C CN B2006100985155 A CNB2006100985155 A CN B2006100985155A CN 200610098515 A CN200610098515 A CN 200610098515A CN 100428663 C CN100428663 C CN 100428663C
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Abstract
This invention relates to a method and a system for testing numbers of lost data in the communication field, in which, said method includes: a user device side utilizes a transmission sequence number TSN to express the first MAC-dPDU serial number packaged in MAC-esPDU, transmits the data carrying said TSN to the base station, which computes the course difference of the data received in two continuous times to judge if there are data lost based on the difference then to compute numbers of the lost MAC-d PDU according to the TSN value of the two times received data and the number of the MAC-d PDU in the transmitted data when the course difference is 2, which can get to know the transmission situation of the last TTI by the first MAC-d PDU serial number packaged in the MAC-es PDU of TSN and test the lost number of the MAC-d PDU.
Description
Technical field
The present invention relates to communication technique field, relate in particular to a kind of method, equipment and system that detects data lost number.
Background technology
3GPP (third generation partnership project) is organized in 2004 and begins to formulate WCDMA system uplink transfer of data enhancement techniques HSUPA (access of high speed uplink bag data), the short frame technique of the technology of the described HSUPA employing HARQ of system (compound re-transmission), NodeB fast dispatch technology and up 2ms, improved the throughput of uplink user data greatly, its peak rate of eating dishes without rice or wine can reach 5.76Mbps, and also bigger raising the up-link capacity of system.
The HSUPA system does not relate to the above entity of the RLC of WCDMA system (Radio Link control) layer, and it has increased MAC (medium access control) entity and physical layer channel newly, the protocol model of data transmission procedure as shown in Figure 1:
After the data of UE side logic channel DTCHs (Dedicated Traffic Channel)/DCCHs (Dedicated Control Channel) are passed through MAC-d, MAC-es/e entity handles, be carried on E-DCH (dedicated channel of the enhancing) transmission channel, and be mapped on the uplink physical channel E-DPDCHs, issue NodeB by eating dishes without rice or wine.Wherein the MAC-es/e entity is after introducing the HSUPA technology, newly-increased functional entity, main being responsible for transmitting again after MAC-d PDU (MAC-d protocol Data Unit) the data multiplex generation MAC-e PDU data block from different MAC-d flow data flow, each TTI (Transmission Time Interval) can only transmit 1 MAC-e PDU data block.
The structure of the MAC-es/e entity of UE side is as shown in Figure 2: the functional module of MAC-es/e entity " E-TFC Selection " is used for transformat to be selected, and determines can transmit in the TTI size of MAC-ePDU, according to allowing the transmission of data block transmitted size." Multiplexing and TSNsetting " functional module is used for the MAC-d PDU packet multiplexing from different MAC-d flow data flow is generated MAC-e PDU data block.Then MAC-e PDU data block is sent to functional module HARQ retransmission entities such as () stopping.The HARQ functional module is distributed to process of this TTI data block MAC-e PDU, uses down-going synchronous ACK/NACK process transmission method to carry out transfer of data.
The prior art scheme has defined the form of MAC-e PDU data block, and as shown in Figure 3: wherein DDI (data description indication), N are the headers of MAC-e PDU, and wherein DDI comprises: information such as logic channel ID, MACd Flow ID, RLC PDU size; N represents the number of the RLC PDU that comprises among the MAC-es PDU.TSN is illustrated in the transmission sequence number of this logic channel MAC-es PDU on the E-DCH transmission channel.MAC-e PDU is sent out on each TTI border.May comprise a plurality of MAC-es PDU among each MAC-e PDU.Each MAC-es PDU is corresponding to one group of DDI, N, TSN, and is combined into by a plurality of MAC-d PDU.Described MAC-d PDU is equal to RLC PDU, refers to the data cell from rlc layer.Suppose only to comprise among the MAC-e PDU MAC-es PDU, promptly DDI, N, TSN have only one group, and then each MAC-e PDU is after assembling and sending, and TSN is 1 to increase progressively with step-length, is cycle period with (0...63).
After the NodeB side joint is received the MAC-e PDU that UE uploads, the MAC-esPDU of wherein encapsulation split and send to the MACes entity of RNC, will be distributed to the different entity that reorders/combination function entity queue by logic channel ID from the data of same MACd stream at the reorder queue distribution function piece of the MACes of RNC entity by MACd stream.So just guaranteed that the MAC-es PDU in each entity that reorders/combination function entity queue has identical MACd Flow ID and logic channel ID.
Utilize TSN and CFN (continuously frame number) and SubFn (subframe numbers) in the said process, can get rid of the packet that repeats to send, and continuous MAC-es PDU is split into RLC PDU be sent in the packet fractionation entity, be sent to the rlc layer of RNC subsequently.
By above-mentioned narration as can be known, indicate by increasing TSN in the prior art, in the entity that reorders/combination function entity of RNC, realize ordering to unordered MAC-es PDU, though with the cooperation of CFN and SubFn under can in certain receive window scope, realize correct ordering, but exist under the event of data loss, but can't detect the quantity of losing of data.
Summary of the invention
The object of the present invention is to provide a kind of method, equipment and system that detects data lost number.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method that detects data lost number comprises:
A, user equipment side utilize transmission sequence number TSN to represent first packaged among MAC-es protocol Data Unit PDU MAC-d PDU sequence number, and the data of carrying described TSN are sent to the base station;
After B, base station received data, the process of calculating double reception data was poor, judged whether to exist loss of data according to described process difference;
C, when the process difference is 2, the number that receives MAC-d PDU in the TSN value of data and the data that sent according to described front and back for twice is calculated the MAC-d PDU number of losing.
The method for expressing of TSN is in the described steps A:
TSN
i+1＝mod(TSN
i+N
i+1，64)，
TSN wherein
I+1Send the sequence number of first MAC-d PDU in the data for the i+1 process;
TSN
iSend the sequence number of first MAC-d PDU in the data for the i process;
Ni sends the number of MAC-d PDU for the i process;
Mod represents the several modulo operations in the follow-up expansion number.
Described process difference computational methods are:
Process is poor=(back receives data time-elder generation reception data time)/tti length.
When the calculation procedure difference is 1, show that data-transfer process is continuous among the described step B, do not have loss of data.
The method of calculating the number of losing MAC-d PDU among the described step C further comprises:
TSN
x+i＝mod(TSNx
+N
x+N
x+i-1，64)，
TSN wherein
X+iReceive the sequence number of first MAC-d PDU in the data for back one x+i process;
TSN
xReceive the sequence number of first MAC-d PDU in the data for last x process;
N
xThe number of the MAC-d PDU that receives for last x process;
N
X+i-1Number for the MAC-d PDU that loses.
A kind of system that detects data lost number, comprise user equipment side and base station side, in user equipment side the transmission sequence number setting module is set, is used to MAC-es protocol Data Unit PDU that the TSN value of first packaged among expression MAC-es PDU MAC-d PDU sequence number is set;
In the base station side setting:
Process difference computing module, the time that is used to write down each reception data, poor according to the process of the double reception data of described Time Calculation;
The loss of data judge module is used for judging whether that according to the result of calculation of process difference computing module process is continuous, thereby has determined whether loss of data;
The data lost number computing module is used to receive the judged result of loss of data judge module, when the process difference is 2, according to described front and back receive the TSN value of data for twice and the data that sent in the number of MAC-dPDU calculate the MAC-d PDU number of losing.
A kind of base station comprises:
Process difference computing module, the time that is used to write down each reception data, poor according to the process of the double reception data of described Time Calculation;
The loss of data judge module is used for judging whether that according to the result of calculation of process difference computing module process is continuous, thereby has determined whether loss of data;
The data lost number computing module is used to receive the judged result of loss of data judge module, when the process difference is 2, according to described front and back receive the TSN value of data for twice and the data that sent in the number of MAC-dPDU calculate the MAC-d PDU number of losing.
As seen from the above technical solution provided by the invention, the sequence number of the present invention by utilizing TSN to indicate first MAC-d PDU of MAC-es PDU encapsulation can be known the transmission situation of last TTI, and detects the MAC-d PDU number of losing.Thereby by respective handling, reduce number of retransmissions, can improve throughput of system and send success rate.
Description of drawings
Fig. 1 is a prior art HSUPA system data transmission course protocol model schematic diagram;
Fig. 2 is a prior art UE side MAC-es/e entity structure schematic diagram;
Fig. 3 is the form of prior art MAC-e PDU data block;
Fig. 4 is a kind of embodiment module diagram of system of the present invention;
Fig. 5 is a kind of embodiment operational flowchart of the method for the invention;
Fig. 6 assembles MAC-e PDU schematic diagram for a kind of embodiment of UE side of the present invention.
Embodiment
Core concept of the present invention provides a kind of method and system that detect data lost number, utilize TSN to represent the initial MAC-d PDU sequence number of transmitting among the MAC-e PDU, process ID in conjunction with transmission can detect data lost number, thereby improves throughput of system and send success rate.
The invention provides a kind of system that detects data lost number, a kind of embodiment module diagram of described system as shown in Figure 4, in the UE side, be provided with the transmission sequence number setting module, be used to MAC-es PDU that the TSN value is set, the sequence number of first MAC-d PDU that is used for representing that MAC-es PDU encapsulates.
Be provided with process difference computing module, loss of data judge module, data lost number computing module in the NodeB side;
The time that described process difference computing module is used to write down each reception data, poor according to the process of the double reception data of described Time Calculation, specifically can be expressed as:
Process is poor=(back receives data time-elder generation reception data time)/tti length.
Described loss of data judge module is used for judging whether that according to the result of calculation of process difference computing module process is continuous, thereby determined whether loss of data, has only when the process difference is 1, can determine that just process is continuous, otherwise, there is loss of data.
Described data lost number computing module is used to receive the judged result of loss of data judge module, when the process difference was 2, the number that receives MAC-d PDU in the TSN value of data and the data that sent according to described front and back for twice was calculated the MAC-d PDU number of losing.
The invention provides a kind of method that detects data lost number, utilize TSN to represent the sequence number of first MAC-d PDU of encapsulating among the corresponding MAC-esPDU, determine the transmission situation of a last TTI according to this sequence number, thereby detect the data number of losing.Its a kind of embodiment operating process comprises the steps: as shown in Figure 5
Step 1:UE side MACes entity is packaging when operation, and the packet setting of transmission sequence number setting module after for encapsulation is used for representing the TSN value of the sequence number of first packaged MAC-d PDU, is sent to NodeB and holds;
This organizes packet procedures as shown in Figure 6, and TSN is by the logic channel independent maintenance, shown in the TSN of corresponding some logic channels is calculated as follows:
Suppose that certain process is to this logic channel application N
iIndividual MAC-d PDU packet is used for MAC-es PDU assembling, and the TSN that calculates is TSN
i, it is as follows to calculate the TSN mode when then next TTI is to the data application of this logic channel:
TSN
i+1＝mod(TSN
i+N
i+1，64)，
TSN wherein
iBe when certain HARQ process the i time when logic channel application MAC-d PDU is used to assemble MAC-es PDU, the TSN information that calculates is represented the sequence number of first MAC-dPDU of this MACes encapsulation, its initial value is 0.For example, if for the first time from 10 MAC-d PDU of this logic channel application packet, then TSN
0Be set to 0, N
0Be set to 10, the TSN that need distribute when calculating down the secondary data application
1=mod (10+1,64)=11 represents that the sequence number that the MAC-d PDU of this time transmission begins is 11, has transmitted 10 MAC-dPDU before;
N
iIt is the number that is used to assemble the MAC-dPDU of MAC-es PDU when certain process the i time to the logic channel application;
Step 2:NodeB is after the data that receive described UE transmission, and process difference computing module calculation procedure is poor;
NodeB whenever receives data, and the transmission sequence number setting module can write down current time of reception, and current reception data time and the preceding data time that once receives are compared, and it is poor to calculate twice reception data process.For example: NodeB is respectively at T
jReceive MAC-e PDU0, at T from UE
kReceive MAC-ePDU1, during do not receive other MAC-e PDU.Corresponding same DDI exists corresponding MACesPdu0 and MACes Pdu1, and the process difference of then giving out a contract for a project for twice is:
i＝(T
j-T
k)/TTIlength；
Wherein, TTIlength represents TTI length.
Step 3: the loss of data judge module judges whether to exist loss of data according to process difference result of calculation, and sends judged result to the data lost number computing module;
If described process difference is 1 o'clock, the expression transfer of data is that process is continuous, the data of not losing; If the process difference greater than 1, then has the data of i-1 process transmission correctly to receive before the expression, wait for retransmitting;
Step 4: when described i value was 2, the data that expression process HARQ (i-1) sends were not correctly received by NodeB, and then the data lost number computing module calculates the MAC-d PDU number that this process is lost;
Suppose that be TSN with process x before current process has this process of i process difference corresponding to the MAC-es PDU header of identical DDI
x, N
x, then
TSN
x+i＝mod(TSN
x+N
x+N
x+i-1，64)，
N wherein
X+i-1Expression process HARQ
X+i-1The MAC-d PDU number that sends does not promptly have the correct MAC-d PDU number that receives.
In sum, the sequence number of the present invention by utilizing TSN to indicate first MAC-dPDU of MAC-es PDU encapsulation can be known the transmission situation of last TTI, and detects the MAC-d PDU number of losing.Thereby by respective handling, reduce number of retransmissions, can improve throughput of system and send success rate.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (7)
1, a kind of method that detects data lost number is characterized in that, comprising:
A, base station receive the data of carrying transmission sequence number TSN that user equipment side sends, and described TSN represents first packaged among MAC-es protocol Data Unit PDU MAC-d PDU sequence number;
After B, base station received data, the process of calculating double reception data was poor, judged whether to exist loss of data according to described process difference;
C, when the process difference is 2, the number that receives MAC-d PDU in the TSN value of data and the data that sent according to described front and back for twice is calculated the MAC-d PDU number of losing.
2, a kind of method that detects data lost number as claimed in claim 1 is characterized in that the method for expressing of TSN is in the described steps A:
TSN
i+1＝mod(TSN
i+N
i+1，64)，
TSN wherein
I+1Send the sequence number of first MAC-d PDU in the data for the i+1 process;
TSN
iSend the sequence number of first MAC-d PDU in the data for the i process;
Ni sends the number of MAC-d PDU for the i process;
Mod represents the several modulo operations in the follow-up expansion number.
3, a kind of method that detects data lost number as claimed in claim 1 is characterized in that, described process difference computational methods are:
Process is poor=(back receives data time-elder generation reception data time)/tti length.
4, a kind of method that detects data lost number as claimed in claim 1 is characterized in that, when the calculation procedure difference is 1, shows that data-transfer process is continuous among the described step B, does not have loss of data.
5, a kind of method that detects data lost number as claimed in claim 1 is characterized in that, the method for calculating the number of losing MAC-d PDU among the described step C further comprises:
TSN
x+i＝mod(TSN
x+N
x+N
x+i-1，64)，
TSN wherein
X+iReceive the sequence number of first MAC-d PDU in the data for back one x+i process;
TSN
xReceive the sequence number of first MAC-d PDU in the data for last x process;
N
xThe number of the MAC-d PDU that receives for last x process;
N
X+i-1Number for the MAC-d PDU that loses.
6, a kind of system that detects data lost number, comprise user equipment side and base station side, it is characterized in that, in user equipment side the transmission sequence number setting module is set, is used to MAC-es protocol Data Unit PDU that the TSN value of first packaged among expression MAC-es PDU MAC-d PDU sequence number is set;
In the base station side setting:
Process difference computing module, the time that is used to write down each reception data, poor according to the process of the double reception data of described Time Calculation;
The loss of data judge module is used for judging whether that according to the result of calculation of process difference computing module process is continuous, thereby has determined whether loss of data;
The data lost number computing module is used to receive the judged result of loss of data judge module, when the process difference is 2, according to described front and back receive the TSN value of data for twice and the data that sent in the number of MAC-dPDU calculate the MAC-d PDU number of losing.
7, a kind of base station is characterized in that, comprising:
Process difference computing module, the time that is used to write down each reception data, poor according to the process of the double reception data of described Time Calculation;
The loss of data judge module is used for judging whether that according to the result of calculation of process difference computing module process is continuous, thereby has determined whether loss of data;
The data lost number computing module is used to receive the judged result of loss of data judge module, when the process difference is 2, according to described front and back receive the TSN value of data for twice and the data that sent in the number of MAC-dPDU calculate the MAC-d PDU number of losing.
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| WO2009010011A1 (en) * | 2007-07-17 | 2009-01-22 | Huawei Technologies Co., Ltd. | Method and apparatus for detecting data loss of radio link control layer |
| CN101350941B (en) * | 2007-07-18 | 2011-06-15 | 电信科学技术研究院 | Network service control method, apparatus and system capable of providing high speed up packet service |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175144A (en) * | 1996-06-27 | 1998-03-04 | 大宇电子株式会社 | Method of detecting lost or incorrect inserted packed based on sequence number |
| CN1367964A (en) * | 1999-09-20 | 2002-09-04 | 诺基亚公司 | Error control method and apparatus |
| CN1423869A (en) * | 1999-11-17 | 2003-06-11 | 艾利森电话股份有限公司 | Link Layer acknowledgement and retransmission for cellular telecommunications |
| US20030210669A1 (en) * | 2002-05-13 | 2003-11-13 | Vayanos Alkinoos Hector | Data delivery in conjunction with a hybrid automatic retransmission mechanism in CDMA communication systems |
-
2006
- 2006-07-04 CN CNB2006100985155A patent/CN100428663C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175144A (en) * | 1996-06-27 | 1998-03-04 | 大宇电子株式会社 | Method of detecting lost or incorrect inserted packed based on sequence number |
| CN1367964A (en) * | 1999-09-20 | 2002-09-04 | 诺基亚公司 | Error control method and apparatus |
| CN1423869A (en) * | 1999-11-17 | 2003-06-11 | 艾利森电话股份有限公司 | Link Layer acknowledgement and retransmission for cellular telecommunications |
| US20030210669A1 (en) * | 2002-05-13 | 2003-11-13 | Vayanos Alkinoos Hector | Data delivery in conjunction with a hybrid automatic retransmission mechanism in CDMA communication systems |
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Effective date of registration: 20211222 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: xFusion Digital Technologies Co., Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |