CN102905308A - Data transmission method and device and eNB (E-UTRAN node B) - Google Patents
Data transmission method and device and eNB (E-UTRAN node B) Download PDFInfo
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- CN102905308A CN102905308A CN2011102085424A CN201110208542A CN102905308A CN 102905308 A CN102905308 A CN 102905308A CN 2011102085424 A CN2011102085424 A CN 2011102085424A CN 201110208542 A CN201110208542 A CN 201110208542A CN 102905308 A CN102905308 A CN 102905308A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000005540 biological transmission Effects 0.000 title abstract description 7
- 239000000872 buffer Substances 0.000 claims abstract description 9
- 230000003139 buffering effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 2
- 235000008694 Humulus lupulus Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 235000021186 dishes Nutrition 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/34—Flow control; Congestion control ensuring sequence integrity, e.g. using sequence numbers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0226—Traffic management, e.g. flow control or congestion control based on location or mobility
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
- H04W36/023—Buffering or recovering information during reselection
- H04W36/0235—Buffering or recovering information during reselection by transmitting sequence numbers, e.g. SN status transfer
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Abstract
The invention provides a data transmission method and device and an eNB (E-UTRAN node B). The data transmission method includes the processes that a target side eNB buffers data packets back-propagated by a source side eNB in switching process; distributing packet data convergence protocol sequence numbers to the data packets; sorting the data packets according to the packet data convergence protocol sequence numbers under predetermined conditions; and sending the data packets to a terminal in sequence. Packet loss caused by transmission disorder can be avoided.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of method, device and eNB of transfer of data.
Background technology
Switching is a basic handling flow process that guarantees user mobility in the mobile communication system, and when the user moved between different mobile communication system, switching can guarantee the continuity of user's business in moving process.
Fig. 1 is X2 switching flow schematic diagram, and its concrete processing comprises:
Source eNB (E-UTRAN Node B, evolution base station) sends handover request (Handover Request) message to destination eNB;
After destination eNB receives handover request message, return handover request to source eNB and reply (Handover Request Ack) message;
After source eNB receives handoff request acknowledgment message, send switching command (Handover Command) message to UE (User Equipment, user terminal), notice UE switches;
Source eNB sends SN Status Transfer (sequence number state transfer) message to destination eNB, this message has been carried and has been destination PDCP (Packet Data Convergence Protocol, PDCP) the counts down value (DL COUNT Value) that PDU (Protocol Data Unit, protocol Data Unit) distributes.
Source eNB sends the anti-pass data to destination eNB.
After UE receives switching command message, switch, send to switch to destination eNB and confirm (Handover Confirm) message, inform that destination eNB has set up the link of eating dishes without rice or wine, at this moment, destination eNB begins to send to UE the anti-pass data from source eNB of buffer memory.
In the handoff procedure, destination eNB may receive two kinds from the anti-pass data of source eNB: establish in the packet of source eNB anti-pass, the packet that the PDCP of process source eNB processes is the primary sources bags, and the packet of the PDCP processing of process source eNB is not the secondary sources bags.
For the primary sources bag, because the PDCP of source eNB is to its processing, so be this allocation of packets SN (sequence number) and HFN (Hyper Frame Number), 36.300 in the agreement these type of data are surrounded by clear and definite explanation: the PDCP SN of anti-pass packet is carried at GTP-U (GPRS Tunnel Protocol-User Plane, GPRS Tunnel Protocol user face, wherein GPRS is GPRS (General Packet Radio Service)) prolate-headed " PDCP PDU number " territory, if destination eNB can by obtaining PDCP SN in the GTP-U extension header of packet, then be this SN of this allocation of packets.
If at X2 link transmission process multiple router hops, so primary sources wrap in send to may exist after the destination eNB out of order, the PDCP SN that is the message of anti-pass was 1,2,3,4,5 order originally, but may just become 2,3,1,5,4 order after having arrived destination eNB, destination eNB sends to UE according to 2,3,1,5,4 order.
UE has received that PDCP SN is 3 message and it is delivered to the upper strata, and Last Submit SN (SN that delivers at last) is updated to 3, so after receiving that PDCP SN is 1 message, can slidingly abandon outside window because it drop on to receive.In like manner, UE has received that PDCP SN is 5 message and it is delivered to the upper strata, and Last Submit SN is updated to 5, so after having received that PDCP SN is 4 message, can slidingly abandon outside window because it drop on to receive.Why can cause above-mentioned switching packet loss problem, be the data packet disorder of anti-pass, and the PDCP SN of packet that causes being handed down to UE is out of order, and then have out of order message to drop on slidingly to abandon outside window.
S1 is switched, also have above-mentioned same problem.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method, device and eNB of transfer of data, to avoid because transmitting the out of order problem that causes packet loss.
In order to solve the problems of the technologies described above, the invention provides a kind of method of transfer of data, comprising:
In the handoff procedure, the packet of destination eNB buffer memory source eNB anti-pass;
Be described allocation of packets PDCP sequence number;
Under predetermined condition, according to described PDCP sequence number described packet is sorted;
According to the order of sequence described packet is handed down to terminal.
Further, said method also has following characteristics: described is described allocation of packets PDCP sequence number, comprising:
If described packet carries the PDCP sequence number, then described destination eNB is the PDCP sequence number that this packet of described allocation of packets carries.
Further, said method also has following characteristics: described is described allocation of packets PDCP sequence number, also comprises:
If described packet does not carry the packet of PDCP sequence number, then described destination eNB is described allocation of packets PDCP sequence number according to a sequence number variable, and then the value with described sequence number variable adds 1,
Wherein, the initial value of described sequence number variable is the sequence number corresponding to counts down value of carrying in the sequence number state transfer message that receives of described destination eNB.
Further, said method also has following characteristics: described predetermined condition comprises: described destination eNB receives the end mark message, or timer expiry.
In order to address the above problem, the present invention also provides a kind of device of transfer of data, is applied to comprise among the eNB:
Cache module is used at handoff procedure the packet of buffer memory source eNB anti-pass;
Distribution module is used to described allocation of packets PDCP sequence number;
Order module is used for according to described PDCP sequence number described packet being sorted under predetermined condition;
Transport module is used for according to the order of sequence described packet being handed down to terminal.
Further, said apparatus also has following characteristics: described distribution module comprises:
Judging unit is used for judging whether described packet carries the PDCP sequence number;
Allocation units are used for carrying in the situation of PDCP sequence number at the described packet of described judgment unit judges, the PDCP sequence number of carrying for this packet of described allocation of packets.
Further, said apparatus also has following characteristics:
Described allocation units also are used for not carrying in the situation of PDCP sequence number at the described packet of described judgment unit judges, are described allocation of packets PDCP sequence number according to a sequence number variable, and then the value with described sequence number variable adds 1,
Wherein, the initial value of described sequence number variable is the sequence number corresponding to counts down value of carrying in the sequence number state transfer message that receives of described destination eNB.
Further, said apparatus also has following characteristics:
Described predetermined condition comprises: described destination eNB receives the end mark message, or timer expiry.
In order to address the above problem, the present invention also provides a kind of eNB, comprises the device of above-mentioned transfer of data.
To sum up, the invention provides a kind of method, device and eNB of transfer of data, can avoid because transmitting the out of order problem that causes packet loss.
Description of drawings
Fig. 1 is X2 switching flow schematic diagram;
Fig. 2 is the schematic diagram of the eNB of the embodiment of the invention;
Fig. 3 is the flow chart of method of the transfer of data of the embodiment of the invention;
Fig. 4 is the flow chart of the method for the present invention's transfer of data of using example one;
Fig. 5 is the flow chart of the method for the present invention's transfer of data of using example two.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing embodiments of the invention are elaborated.Need to prove that in the situation of not conflicting, the embodiment among the application and the feature among the embodiment be combination in any mutually.
In order to understand better the present invention, below in conjunction with the drawings and specific embodiments the present invention is done to describe further.
Fig. 2 is the schematic diagram of the eNB of the embodiment of the invention, and as shown in Figure 1, the eNB of present embodiment comprises a data transmission device, and this data transmission device comprises following several module:
Cache module is used at handoff procedure the packet of buffer memory source eNB anti-pass;
Distribution module is used to described allocation of packets PDCP sequence number;
Order module is used for according to described PDCP sequence number described packet being sorted under predetermined condition;
Transport module is used for according to the order of sequence described packet being handed down to terminal.
Wherein, described distribution module comprises:
Judging unit is used for judging whether described packet carries the PDCP sequence number;
Allocation units are used for carrying in the situation of PDCP sequence number at the described packet of described judgment unit judges, the PDCP sequence number of carrying for this packet of described allocation of packets.
Wherein, described allocation units can also be used for not carrying in the situation of PDCP sequence number at the described packet of described judgment unit judges, are described allocation of packets PDCP sequence number according to a sequence number variable, then the value with described sequence number variable adds 1
Wherein, the initial value of described sequence number variable is the sequence number corresponding to counts down value of carrying in the sequence number state transfer message that receives of described destination eNB.
Wherein, described predetermined condition can comprise: described destination eNB receives the end mark message, or timer expiry.
Fig. 3 is the flow chart of method of the transfer of data of the embodiment of the invention, and as shown in Figure 3, the method for present embodiment comprises:
In S10, the handoff procedure, the packet of destination eNB buffer memory source eNB anti-pass;
S20, be described allocation of packets PDCP sequence number;
S30, under predetermined condition, according to described PDCP sequence number described packet is sorted;
S40, according to the order of sequence described packet is handed down to terminal.
According to the scheme that the embodiment of the invention provides, destination eNB just can not issue out of order message to UE, and then can avoid the packet loss that causes therefrom, for the user brings good experience.
Use example one, as shown in Figure 4, increase ranking function at the PDCP of eNB layer, the packet of anti-pass is sorted, comprise following step:
The initialization value of Next_Tx_SN is SN corresponding to DL COUNT Value, and destination eNB is that the secondary sources that receive are responsible for assigning behind the PDCP SN, and the Next_Tx_SN value adds 1.
Use example two, as shown in Figure 5, increase ranking function at the PDCP of eNB layer, the packet of anti-pass is sorted, comprise following step:
The anti-pass timer expiry of step 303, destination eNB.
One of ordinary skill in the art will appreciate that all or part of step in the said method can come the instruction related hardware to finish by program, described program can be stored in the computer-readable recording medium, such as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Below only be the preferred embodiments of the present invention; certainly; the present invention also can have other various embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. the method for a transfer of data comprises:
In the handoff procedure, the packet of destination eNB buffer memory source eNB anti-pass;
Be described allocation of packets PDCP sequence number;
Under predetermined condition, according to described PDCP sequence number described packet is sorted;
According to the order of sequence described packet is handed down to terminal.
2. the method for claim 1 is characterized in that: describedly be described allocation of packets PDCP sequence number, comprise:
If described packet carries the PDCP sequence number, then described destination eNB is the PDCP sequence number that this packet of described allocation of packets carries.
3. method as claimed in claim 2 is characterized in that: describedly be described allocation of packets PDCP sequence number, also comprise:
If described packet does not carry the packet of PDCP sequence number, then described destination eNB is described allocation of packets PDCP sequence number according to a sequence number variable, and then the value with described sequence number variable adds 1,
Wherein, the initial value of described sequence number variable is the sequence number corresponding to counts down value of carrying in the sequence number state transfer message that receives of described destination eNB.
4. such as each described method of claim 1-3, it is characterized in that:
Described predetermined condition comprises: described destination eNB receives the end mark message, or timer expiry.
5. the device of a transfer of data is applied to comprise among the eNB:
Cache module is used at handoff procedure the packet of buffer memory source eNB anti-pass;
Distribution module is used to described allocation of packets PDCP sequence number;
Order module is used for according to described PDCP sequence number described packet being sorted under predetermined condition;
Transport module is used for according to the order of sequence described packet being handed down to terminal.
6. device as claimed in claim 5, it is characterized in that: described distribution module comprises:
Judging unit is used for judging whether described packet carries the PDCP sequence number;
Allocation units are used for carrying in the situation of PDCP sequence number at the described packet of described judgment unit judges, the PDCP sequence number of carrying for this packet of described allocation of packets.
7. method as claimed in claim 6 is characterized in that:
Described allocation units also are used for not carrying in the situation of PDCP sequence number at the described packet of described judgment unit judges, are described allocation of packets PDCP sequence number according to a sequence number variable, and then the value with described sequence number variable adds 1,
Wherein, the initial value of described sequence number variable is the sequence number corresponding to counts down value of carrying in the sequence number state transfer message that receives of described destination eNB.
8. such as each described method of claim 5-7, it is characterized in that:
Described predetermined condition comprises: described destination eNB receives the end mark message, or timer expiry.
9. an eNB comprises each described device such as claim 5-8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102085424A CN102905308A (en) | 2011-07-25 | 2011-07-25 | Data transmission method and device and eNB (E-UTRAN node B) |
| PCT/CN2011/080109 WO2012155434A1 (en) | 2011-07-25 | 2011-09-23 | A method, apparatus for data transmission and an enb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102085424A CN102905308A (en) | 2011-07-25 | 2011-07-25 | Data transmission method and device and eNB (E-UTRAN node B) |
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| CN102905308A true CN102905308A (en) | 2013-01-30 |
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| CN2011102085424A Pending CN102905308A (en) | 2011-07-25 | 2011-07-25 | Data transmission method and device and eNB (E-UTRAN node B) |
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| CN (1) | CN102905308A (en) |
| WO (1) | WO2012155434A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104468061A (en) * | 2014-11-25 | 2015-03-25 | 厦门雅迅网络股份有限公司 | Real-time reliable data transmission method and system under low-speed network environment |
| CN104684031A (en) * | 2015-02-12 | 2015-06-03 | 大唐移动通信设备有限公司 | Method and device for coordinating base station and terminal serial numbers |
| CN104683262A (en) * | 2015-01-30 | 2015-06-03 | 大唐移动通信设备有限公司 | Processing method and equipment for data packet |
| CN104812000A (en) * | 2014-01-27 | 2015-07-29 | 中兴通讯股份有限公司 | Method and device for realizing data transmission |
| CN104837162A (en) * | 2015-04-01 | 2015-08-12 | 京信通信技术(广州)有限公司 | Method and device for processing data switching overtime phenomenon |
| CN106900017A (en) * | 2015-12-21 | 2017-06-27 | 中兴通讯股份有限公司 | Data inverse-transmitting method and device |
| CN108632933A (en) * | 2017-03-23 | 2018-10-09 | 展讯通信（上海）有限公司 | Data transmission method, device and user equipment |
| CN113596737A (en) * | 2020-04-30 | 2021-11-02 | 维沃移动通信有限公司 | Data retransmission method and device, target node, source node and terminal |
| CN114244785A (en) * | 2021-12-20 | 2022-03-25 | 中国电信集团系统集成有限责任公司 | 5G data flow out-of-order processing method and device |
| WO2023207160A1 (en) * | 2022-04-28 | 2023-11-02 | 中兴通讯股份有限公司 | Data reverse-transmission method and apparatus, system, electronic device, and readable storage medium |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812000A (en) * | 2014-01-27 | 2015-07-29 | 中兴通讯股份有限公司 | Method and device for realizing data transmission |
| CN104468061B (en) * | 2014-11-25 | 2019-08-20 | 厦门雅迅网络股份有限公司 | A kind of method and system of real-time reliable data transmission under low-speed network environment |
| CN104468061A (en) * | 2014-11-25 | 2015-03-25 | 厦门雅迅网络股份有限公司 | Real-time reliable data transmission method and system under low-speed network environment |
| CN104683262B (en) * | 2015-01-30 | 2018-02-02 | 大唐移动通信设备有限公司 | The processing method and equipment of a kind of packet |
| CN104683262A (en) * | 2015-01-30 | 2015-06-03 | 大唐移动通信设备有限公司 | Processing method and equipment for data packet |
| CN104684031A (en) * | 2015-02-12 | 2015-06-03 | 大唐移动通信设备有限公司 | Method and device for coordinating base station and terminal serial numbers |
| CN104684031B (en) * | 2015-02-12 | 2018-12-14 | 大唐移动通信设备有限公司 | A kind of method and apparatus for coordinating base station and terminal serial number |
| CN104837162B (en) * | 2015-04-01 | 2018-09-25 | 京信通信系统（中国）有限公司 | A kind of processing data switch the method and device of time-out |
| CN104837162A (en) * | 2015-04-01 | 2015-08-12 | 京信通信技术(广州)有限公司 | Method and device for processing data switching overtime phenomenon |
| WO2017107668A1 (en) * | 2015-12-21 | 2017-06-29 | 中兴通讯股份有限公司 | Data reverse transmission method and device |
| CN106900017A (en) * | 2015-12-21 | 2017-06-27 | 中兴通讯股份有限公司 | Data inverse-transmitting method and device |
| CN106900017B (en) * | 2015-12-21 | 2021-04-02 | 中兴通讯股份有限公司 | Data back transmission method and device |
| CN108632933A (en) * | 2017-03-23 | 2018-10-09 | 展讯通信（上海）有限公司 | Data transmission method, device and user equipment |
| CN108632933B (en) * | 2017-03-23 | 2020-10-02 | 展讯通信（上海）有限公司 | Data transmission method and device and user equipment |
| CN113596737A (en) * | 2020-04-30 | 2021-11-02 | 维沃移动通信有限公司 | Data retransmission method and device, target node, source node and terminal |
| CN113596737B (en) * | 2020-04-30 | 2023-03-31 | 维沃移动通信有限公司 | Data retransmission method and device, target node, source node and terminal |
| CN114244785A (en) * | 2021-12-20 | 2022-03-25 | 中国电信集团系统集成有限责任公司 | 5G data flow out-of-order processing method and device |
| WO2023207160A1 (en) * | 2022-04-28 | 2023-11-02 | 中兴通讯股份有限公司 | Data reverse-transmission method and apparatus, system, electronic device, and readable storage medium |
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| WO2012155434A1 (en) | 2012-11-22 |
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Application publication date: 20130130 |