CN101330451A - Method for processing forwarding of data packet, node and packet core apparatus - Google Patents

Method for processing forwarding of data packet, node and packet core apparatus Download PDF

Info

Publication number
CN101330451A
CN101330451A CN 200710126762 CN200710126762A CN101330451A CN 101330451 A CN101330451 A CN 101330451A CN 200710126762 CN200710126762 CN 200710126762 CN 200710126762 A CN200710126762 A CN 200710126762A CN 101330451 A CN101330451 A CN 101330451A
Authority
CN
China
Prior art keywords
packet
data
node
sequence number
transferred
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN 200710126762
Other languages
Chinese (zh)
Other versions
CN101330451B (en
Inventor
马小飞
黄颖华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN 200710126762 priority Critical patent/CN101330451B/en
Priority to PCT/CN2008/071394 priority patent/WO2008154885A1/en
Publication of CN101330451A publication Critical patent/CN101330451A/en
Application granted granted Critical
Publication of CN101330451B publication Critical patent/CN101330451B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/08Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045Arrangements at the receiver end

Abstract

The invention discloses a data packet forwarding processing method, a node and a packet core device thereof. The method comprises the following steps: a target node detects whether a source node forwards all data packets to be transmitted, and the reception of data packets forwarded by the source node is terminated when the target node detects that the source node has forwarded all the data packets to be transmitted. The detection of the reception of all the data packets to be transmitted is realized by the following steps: the source node notifies the target node of the number of the data packets to be transmitted in this time, and the target node notifies that all the data packets required to be forwarded by the source node are received when the number of the received data packets reaches the number of the data packets to be transmitted. By using the method, a target evolved node (eNB) can be notified that all the data packets forwarded by a source eNB are received in time, so as to terminate the reception waiting for the data packets forwarded by the source eNB and immediately turn to process the data packets from S1 interface, thereby ensuring the processing priority of the data packets forwarded by the source eNB and eliminate unnecessary waiting time of the target eNB.

Description

The method for processing forwarding of packet, node and packet core apparatus
Technical field
The present invention relates to communication technical field, especially a kind of method for processing forwarding of packet, node and packet core apparatus.
Background technology
Long Term Evolution (Long Term Evolution, hereinafter to be referred as: LTE) technology claims network configuration (the Universal Terrestrial Radio Access Network of evolution again, hereinafter to be referred as: E-UTRAN) technology, being the technology evolution to the whole network that comprises core net, is the new technology development project of the maximum of 3GPP startup over the past two years.As shown in Figure 1, structural representation for prior art LTE system, in the LTE system, cancelled radio network controller (Radio Network controller, hereinafter to be referred as: RNC), Evolved Packet Core device (Evolved Packet Core, hereinafter to be referred as: EPC) be divided into chain of command entity (Mobility Management Entity, hereinafter to be referred as: MME) and user entity (User PlaneEntity, hereinafter to be referred as: UPE) system architecture evolution gateway (System Architecture EvolutionGateway, hereinafter to be referred as: SAE Gateway), evolved node (eNodeB, hereinafter to be referred as: eNB) directly link to each other with EPC, eNB is used for realizing that with there being the S1 interface between the MME/SAE Gateway data send and Signalling exchange between eNB and MME/SAE Gateway; Directly link to each other between the eNB.There is X2 interface between the eNB, is used to realize data forwarding and information interaction between the eNB.
As shown in Figure 2, carry out the flow chart that baseline switches for prior art in LTE system shown in Figure 1, it may further comprise the steps:
Step 200, at terminal (User Equipment, hereinafter to be referred as: UE) connect in the process of the business of foundation with network, or nearest tracking area (Track Area, hereinafter to be referred as: TA) in the renewal, comprise roaming restriction (Area Restriction Provided) information in zone in the terminal context among the eNB of source;
Step 201, source eNB is that terminal configuration is measured control (Measurement control) information according to zone roaming restricted information, the measurement control flow accessory terminal that source eNB provides carries out mobility functions control;
Step 202, terminal according to the rule that sets in advance to source eNB reporting measurement reports (Measurementreport);
Step 203, source eNB is based on the measurement report of terminal to report and the switching (HO decision) of wireless resource management information decision terminal;
Step 204, source eNB sends handoff request message to target eNB, inform the handover preparation information (Handover request) of target eNB necessity, comprise Radio Resource, the X2 interface of target eNB and S1 interface signaling are with reference to the EPC that has guaranteed that target eNB can locating source eNB;
Step 205, target eNB is in order to improve handover success rate, service quality (Quality of service based on the SAE carrying that receives, hereinafter to be referred as: Qos) information and executing is admitted control (Admissioncontrol), if target eNB can be admitted this terminal, then for the Radio Resource of this handover configurations request and keep Cell Radio Network Temporary Identifier/Identity, Cell-RNTI symbol (Cell Radio Network Temporary Identity, hereinafter to be referred as: C-RNTI);
Step 206, target eNB is prepared to switch and send handover request ack message (Handover request ack) to source eNB, comprising the C-RNTI that keeps, (Radio Network Layer/Transport Network Layer is hereinafter to be referred as information such as RNL/TNL) can also to comprise the wireless network layer/transport network layer in access parameter, system information, forwarding tunnel;
Step 207, source eNB sends switching command message (Handover command) to terminal, the information of carrying in the handover request ack message comprising the target eNB transmission, source eNB is that message is carried out necessary integrity protection and encryption;
Step 208, terminal is initiated synchronously and is obtained the uplink synchronous time (Synchronisation) in advance from target eNB to target eNB;
Step 209, target eNB response uplink assignment and uplink synchronous time is (UL allocation+TA for UE) in advance;
Step 210, terminal insert the target eNB sub-district, successfully insert the back and send switch acknowledgment message (Handover confirm) to target eNB, inform that the target eNB switching flow finishes;
Step 211, target eNB sends to switch to EPC finishes acknowledge message (Handover complete), notice EPC terminal is changing district more, thereby allows UPE that the downlink data path is switched to target side and be discharged into the user's face and the transport layer network resource of source end;
Step 212, EPC sends to target eNB and switches the response message (Handovercomplete ack) of finishing acknowledge message;
Step 213, target eNB send to source eNB and discharge message related to resources (Release source), and notification source eNB terminal handover success also triggers resource release;
Step 214 after source eNB receives resource release message, discharges with context-sensitive Radio Resource of terminal and chain of command resource (Release source).
In handoff procedure, in order to guarantee the harmless transmission of packet, in the prior art, adopt mode transmitting downlink data between source eNB and target eNB of data forwarding, that is: when switching, source eNB with all not by the descending service data unit of terminal response (Service Data Unit, hereinafter to be referred as: SDU) packet is forwarded to target eNB.At wireless access network (Radio Access Network, hereinafter to be referred as: RAN) demand that proposes in the LTE project is: user's face handover scheme need minimize the losing of downlink data packet, repetition, out of order transmission and break period between eNB, in order to satisfy these demands, just need the target eNB priority treatment to transmit the SDU packet of coming from source eNB, after the source eNB that disposes transmits next SDU packet, remove to handle the SDU packet that receives from the S1 mouth again.
Transmit the SDU packet of coming in order to guarantee the target eNB priority treatment from source eNB, prior art is provided with a timer in target eNB, in handoff procedure, length of timer is set, in order to guarantee to avoid data-bag lost, the data buffering situation and the packet that take into full account among the eNB of source are provided with length of timer in the propagation delay time of X2 interface, when beginning packet that reception sources eNB forwards, target eNB picks up counting, before timer expiry, think that source eNB does not finish as yet to the data forwarding of target eNB, when timer expiry, think that source eNB finishes to the data forwarding of target eNB, the packet that target eNB can diversion treatments sends from the S1 interface.
The inventor in realizing process of the present invention, find prior art guarantee the target eNB priority treatment from source eNB transmit come the SDU packet time, have following problem at least:
Length of timer is provided with based on artificial estimation and prediction, can't transmit the required real time coupling of packet to target eNB with source eNB.In order to prevent data-bag lost, it is usually based on the poorest transmission conditions setting, and this duration is provided with longly usually, and for example: when considering transmits data packets, the packet that source eNB is to be transmitted will increase, the maximum transmitted time delay on the X2 interface etc.In the forwarding condition just often, the length of timer that is provided with is longer than the time of actual needs usually, like this, even the packet from source eNB to target eNB is transmitted and is finished, target eNB needs also that waiting timer is overtime could handle the packet that sends from the S1 interface, unnecessary prolongation switching time, reduced the operating efficiency of system; And under opposite situation, when time ratio being set short the time, though the packet of source eNB is transmitted as yet and is finished when timer is overtime, the packet that target eNB also can diversion treatments sends from the S1 interface.Like this, will cause packet lose or the priority treatment of data lost efficacy.
Summary of the invention
Embodiment of the invention technical problem to be solved is: guarantee destination node after handling the packet that comes from the source node forwarding, the reception that end is in time transmitted next packet to source node is handled.
According to embodiments of the invention, the method for processing forwarding of a kind of packet that provides may further comprise the steps:
Whether destination node detection resources node has transmitted all data to be transferred bags, when described destination node detects described source node and transmitted all data to be transferred bags, finishes the reception of packet that described source node is transmitted and handles.
According to embodiments of the invention, a kind of node that provides comprises:
Message processing module, the number or the maximum sequence number that are used to add up the data to be transferred bag, or the state bitmap or the data to be transferred bag that generate the data to be transferred bag transmit the notification message that finishes, or generate and carry last bag sign or transmit the packet that finishes sign;
Sending module, be used for sending the number or the maximum sequence number of the described data to be transferred bag of described message processing module statistics to other node, or the notification message that finishes of the state bitmap that produces of described message processing module or forwarding, or described message processing module produce carry last bag sign or transmit the packet that finishes sign.
According to embodiments of the invention, the another kind of node that provides comprises:
Receiver module is used to receive number or the maximum sequence number or the state bitmap of the packet that other node transmits, or the data to be transferred bag transmits the notification message that finishes, or carries last bag sign or transmit the packet that finishes sign;
Judge module, be used for number or maximum sequence number or state bitmap according to the data to be transferred bag of described receiver module reception, or transmit the notification message finish, or carry last bag sign or transmit the packet that finishes sign, judge whether to receive all data that need transmit by described source node and export judged result;
Indicating module is used for the judged result according to described judge module, after described receiver module is received all data to be transferred bags, indicates described receiver module end that the reception of the packet of described source node forwarding is handled.
According to embodiments of the invention, a kind of packet core apparatus that provides comprises:
Collection module is used to collect the maximum sequence number of the packet that is handed down to source node or is handed down to the sequence number of first packet of described destination node;
Issue module, be used for issuing packet, and the maximum sequence number of the packet that is handed down to source node that described notifying section point is collected or the sequence number that is handed down to first packet of described destination node send to described destination node to described source node.
In the embodiment of the invention, destination node detect whether accepted packet to be passed among the active eNB, but target eNB detects the data to be transferred bag of receiving in all source nodes, finish source node is transmitted the wait reception processing of packet immediately, so that in time diversion treatments is from the next packet of S1 interface, minimized losing of downlink data packet, repeat, out of order transmission and break period, and, compared with prior art, overcome at the data to be transferred bag and transmitted the still overtime deficiency of waiting timer that finishes, both guaranteed source node is transmitted the preferential reception processing of data, prevented that again the unnecessary wait of destination node from receiving the time of being transmitted packet by source node, improved the operating efficiency of LTE system.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of prior art LTE system.
Fig. 2 carries out the flow chart that baseline switches for prior art in LTE system shown in Figure 1.
Fig. 3 is the flow chart of method for processing forwarding first embodiment of packet of the present invention.
Fig. 4 is the flow chart of method for processing forwarding second embodiment of packet of the present invention.
Fig. 5 is the flow chart of method for processing forwarding the 3rd embodiment of packet of the present invention.
Fig. 6 is the flow chart of method for processing forwarding the 4th embodiment of packet of the present invention.
Fig. 7 is the flow chart of method for processing forwarding the 5th embodiment of packet of the present invention.
Fig. 8 is the flow chart of method for processing forwarding the 6th embodiment of packet of the present invention.
Fig. 9 is the flow chart of method for processing forwarding the 7th embodiment of packet of the present invention.
Figure 10 is the schematic diagram of the embodiment of the state bitmap of packet of the present invention.
Figure 11 is the flow chart of method for processing forwarding the 8th embodiment of packet of the present invention.
Figure 12 is the flow chart of method for processing forwarding the 9th embodiment of packet of the present invention.
Figure 13 is the structural representation of eNB first embodiment of the present invention.
Figure 14 is the structural representation of eNB second embodiment of the present invention.
Figure 15 is the structural representation of eNB the 3rd embodiment of the present invention.
Figure 16 is the structural representation of eNB the 4th embodiment of the present invention.
Figure 17 is the structural representation of eNB the 5th embodiment of the present invention.
Figure 18 is the structural representation of eNB the 6th embodiment of the present invention.
Figure 19 is the structural representation of EPC embodiment of the present invention.
Figure 20 transmits the structural representation of treatment system first to eight embodiment for packet of the present invention.
Figure 21 transmits the structural representation of treatment system the 9th to the 12 embodiment for packet of the present invention.
Embodiment
In the embodiment of the invention, the maximum sequence number of the packet of the source of the being handed down to eNB that target eNB sends according to EPC or be handed down to the sequence number of first packet of this target eNB, or the number or the maximum sequence number of the data to be transferred bag of source eNB transmission, or the state bitmap of data to be transferred bag or notification message that forwarding finishes, or carry last bag sign or transmit the packet that finishes sign, packet in conjunction with current reception, detect and whether receive the packet of transmitting by source eNB, when receiving, end in time receives processing to the wait that source eNB transmits packet, so that in time diversion treatments is from the next packet of S1 interface.
As shown in Figure 3, be the flow chart of method for processing forwarding first embodiment of packet of the present invention, this embodiment may further comprise the steps:
Step 301, in the process that terminal is switched, source eNB adds up not by the number of the packet of terminal response, is not the data to be transferred bag by the packet of terminal response, need be transmitted to target eNB, supposes that this number is M, desirable zero the integer that is not less than of M.
Step 302, the number M that source eNB is transmitted to needs the packet of target eNB sends to target eNB.
Particularly, source eNB can send the number M of data to be transferred bag by independent message to target eNB, also this number M can be carried in the signaling message on the existing X2 interface and send to target eNB, it can also be carried at source eNB and in the packet that target eNB is transmitted, send to target eNB by X2 interface.
Step 303, target eNB receive the number M of packet to be received, and whether judge M greater than zero, whether have the packet that need be forwarded by source eNB that is:, if greater than zero, and execution in step 304, otherwise, execution in step 308.
Step 304, the number M of the packet that the target eNB storage is to be received receives the packet that is forwarded by source eNB.
Step 305, after target eNB receives the packet that source eNB forwards, number M to the packet to be received of storage upgrades according to the number of the packet that receives, receive N packet that comes by source eNB forwarding, just the number of packet with storage reduces N, wherein, N is not less than 1 integer.The number M of the packet of storing in the target eNB to be received is owing to be updated and dynamic change, and after first the number M of the packet of storage being upgraded, the number of the packet to be received of storage becomes M-N, upgrades on the basis of M-N afterwards.
After step 306, target eNB reduced N with the number of packet, whether the number of judging the packet to be received after upgrading was greater than zero, that is: whether receiving the packet that all need be forwarded by source eNB, is that then execution in step 308, otherwise, execution in step 307.
Step 307, target eNB wait for and receive the packet that is forwarded by source eNB that execution in step 305 then.
Step 308, target eNB finish source eNB is transmitted the wait reception processing of packet, so that in time diversion treatments receives the packet that issues by EPC by S1.
According to step 302, after the number M that source eNB is transmitted to needs the packet of target eNB sends to target eNB, source eNB is if receive terminal is transmitted to the response message of packet of target eNB to needs after, and also the number that needs is transmitted to the packet of target eNB according to the response message of terminal upgrades and timely notification target eNB.Accordingly, target eNB is upgraded according to the notification message of the source eNB number to the packet to be received of storage.
As shown in Figure 4, be the flow chart of method for processing forwarding second embodiment of packet of the present invention, among this embodiment, source eNB is carried at the number that needs are transmitted to the packet of target eNB in the packet, send to target eNB by X2 interface, this embodiment may further comprise the steps:
Step 401, in the process that terminal is switched, source eNB adds up not by the number of the packet of terminal response, is not transmitted to target eNB by the packets need of terminal response, supposes that this number is M, desirable zero the integer that is not less than of M.
Step 402, the number M that source eNB is transmitted to needs the packet of target eNB writes in the packet that will be transmitted to target eNB and sends to target eNB.Particularly, can write in each packet that need be transmitted to target eNB, also can write in first packet that will be transmitted to target eNB according to regulation in advance.For writing each packet, the number that only needs is transmitted to the packet of target eNB writes the system resource that can take less source eNB in first packet, saves time, and improves its operating efficiency.Below to write in first packet with the number that only needs is transmitted to the packet of target eNB be that example describes.
Step 403, target eNB receives first packet that forwards from source eNB, therefrom obtains the number M of packet to be received, owing to received first packet, the number M of packet to be received is reduced 1, that is: the number of the packet that will receive later on is M-1.
Step 404, target eNB are judged M-1 whether greater than zero, whether still have the packet that need be forwarded by source eNB that is:, if greater than zero, and execution in step 405, otherwise, execution in step 409.
Step 405, the number M-1 of the packet that the target eNB storage is to be received receives the packet that is forwarded by source eNB.
Step 406, after target eNB receives the packet that source eNB forwards, number M-1 to the packet to be received of storage upgrades according to the number of the packet that receives, receive N packet that comes by source eNB forwarding, just the number of packet with storage reduces N, wherein, N is not less than 1 integer.The number M-1 of the packet of storing in the target eNB to be received is owing to be updated and dynamic change, and after first the number M-1 of the packet of storage being upgraded, the number of the packet to be received of storage becomes M-N-1, upgrades on the basis of M-N-1 afterwards.
After step 407, target eNB reduced N with the number of packet, whether the number of judging the packet to be received after upgrading was greater than zero, that is: whether receiving the packet that all need be forwarded by source eNB, is that then execution in step 409, otherwise, execution in step 408.
Step 408, target eNB wait for and receive the packet that is forwarded by source eNB that execution in step 406 then.
Step 409, target eNB finish source eNB is transmitted the wait reception processing of packet, so that in time diversion treatments receives the packet that issues by EPC by S1.
During the number of source eNB by mode notification target eNB data to be transferred bag shown in Figure 4, if in the process of transmitting packet, the number of waiting to be transmitted to the packet of target eNB reduces owing to the response of terminal, after then source eNB upgrades the number of the packet that will be transmitted to target eNB afterwards, can be by the number of the packet after carrying renewal in the packet that will be transmitted to target NB at the next one, also can after the number of packet after carrying this renewal in all packets of transmitting, can also be by the number of the packet of independent message after target eNB send to be upgraded, the number of the packet after perhaps will upgrading is carried in the signaling message on the existing X2 interface and sends to target eNB.
At needing among the eNB of source to the sequence number of the packet that target eNB is transmitted continuously and under the situation that packet is difficult for losing on the S1 interface, can transmit handle packet to method embodiment illustrated in fig. 7 by Fig. 5 in process of transmitting.As shown in Figure 5, be the flow chart of method for processing forwarding the 3rd embodiment of packet of the present invention, this embodiment may further comprise the steps:
Step 501, target eNB receive first packet that EPC sends by the S1 interface, obtain the sequence number of this packet by parsing, if the sequence number of the packet that EPC sends is clear and definite sequence number, then need not resolve, and suppose that this sequence number is M+1.
Step 502, target eNB receives the packet that is forwarded by source eNB, and obtains the sequence number of this packet.
Step 503, if source eNB transmits packet according to the sequence number of packet, target eNB judges whether the sequence number of the current packet that receives is M, that is: whether receiving the packet that all need be forwarded by source eNB, is that then execution in step 505, otherwise, execution in step 504.
Because source eNB transmits packet according to the sequence number of packet, the preferential packet that sends low sequence number when target eNB is receiving the sequence number of transmitting the packet that comes from the source when being M, is then thought to have received the packet that all need be transmitted by source eNB.
Step 504, target eNB wait for and receive the packet that is forwarded by source eNB that execution in step 502 then.
Step 505, target eNB finish source eNB is transmitted the wait reception processing of packet, so that the packet that timely diversion treatments is issued by the S1 interface by EPC.
In the embodiment shown in fig. 5, with respect to step 501, also can it be handed down to the sequence number M (step 601) of last packet of source eNB by EPC notification target eNB; Perhaps, also can be handed down to the sequence number M (step 701) of last packet of oneself by source eNB notice EPC.As Fig. 6, shown in Figure 7, be respectively by after step 601 and the step 701 replacement step 501 flow chart of method for processing forwarding fourth, fifth embodiment of packet of the present invention.
In addition, Fig. 5 is applicable to that to embodiment shown in Figure 7 source eNB transmits the situation of packet to target eNB according to the sequence number of packet, transmit the situation of packet to target eNB not according to the sequence number of packet at source eNB, as shown in Figure 8, be the flow chart of method for processing forwarding the 6th embodiment of packet of the present invention, this embodiment may further comprise the steps:
Step 801, in the process that terminal is switched, source eNB obtains all not by sequence number minimum in the packet of terminal response, and notification target eNB, supposes that this minimum sequence number is A, and A is not less than zero integer.
Particularly, identical with step 301, source eNB can be by the sequence number of independent message informing target eNB minimum, also sequence number that should minimum can be carried in the signaling message on the existing X2 interface and send to target eNB, it can also be carried at source eNB and in first packet that target eNB is transmitted, send to target eNB by X2 interface.
Step 801 ', target eNB receives EPC by first packet that the S1 interface sends, and obtains the sequence number M+1 of this packet by parsing; Perhaps, it is handed down to the sequence number M of last packet of source eNB by EPC notification target eNB; Perhaps, be handed down to the sequence number M of last packet of oneself by source eNB notice EPC.
Step 802, target eNB receives the packet that is forwarded by source eNB, obtains the sequence number and the storage of this packet.
Step 803, target eNB judge whether to receive the packet of all sequence numbers from A to M according to the sequence number of the packet of storage, that is: whether receiving the packet that all need be forwarded by source eNB, is that then execution in step 805, otherwise, execution in step 804.
When target eNB during, then think to have received the packet that all need be transmitted by source eNB at all packets from A to M of the sequence number that receives the packet that transmits from source eNB.
Step 804, target eNB wait for and receive the packet that is forwarded by source eNB that execution in step 802 then.
Step 805, target eNB finish source eNB is transmitted the wait reception processing of packet, so that the packet that timely diversion treatments is issued by the S1 interface by EPC.
In the embodiment shown in fig. 8, step 801 ' also can carry out simultaneously prior to step 801 or with step 801.
As shown in Figure 9, be the flow chart of method for processing forwarding the 7th embodiment of packet of the present invention, this embodiment may further comprise the steps:
Step 901, in the process that terminal is switched, source eNB is according to not generated the state bitmap that needs are transmitted to the packet of target eNB by the sequence number of the packet of terminal response.
As shown in figure 10, need be transmitted to the schematic diagram of an embodiment of state bitmap of the packet of target eNB for the present invention, provided the forwarding state of 10 packets among the figure, for example: identify this packets need with " 1 " and transmit, identifying this packet with " 0 " does not need to transmit, then according to this state bitmap, the 1st, 3,5 and 6 packets need that begins from original position is transmitted to target eNB by source eNB.The concrete sign that whether needs to transmit packet can be set in source eNB and target eNB in advance.
Step 902, the state bitmap that source eNB is transmitted to needs the packet of target eNB sends to target eNB.
Particularly, identical with step 301, source eNB can send this state bitmap to target eNB by independent message, also the state bitmap can be carried in the signaling message on the existing X2 interface and send to target eNB, it can also be carried at source eNB and in first packet that target eNB is transmitted, send to target eNB by X2 interface.
Step 903, target eNB are stored this state bitmap, receive the packet that is forwarded by source eNB.
Step 904, target eNB be by relatively state bitmap and the packet that receives, and judges whether to receive the packet that all need be forwarded by source eNB, is, then execution in step 906, otherwise, execution in step 905.
Particularly, the quantity for the mode bit of " 1 " is known in the number of the packet that target eNB can be relatively forwarded by source eNB and the acceptance of the bid of state bitmap, when the number of the packet that forwards at source eNB and the acceptance of the bid of state bitmap are known quantity for the mode bit of " 1 " and equated, just receive the packet that all need be forwarded by source eNB.In addition, under the situation that the sequence number of the corresponding packet of each sign is consistent with the sequence number of packet to be transmitted in state bitmap shown in Figure 10, in the step 902, source eNB also sends the sequence number of the corresponding packet of first sign in this state bitmap when the transmit status bitmap of target eNB, for example: 88002, particularly, can separate the sequence number that sends this first corresponding packet of sign with the state bitmap, also it can be identified in the state bitmap and send, like this, source eNB is according to the sequence number of the corresponding packet of first sign in the state bitmap, and need the sign of forwarding packet and the position between first sign to concern, just can know the sequence number of data to be transferred bag, target eNB just can know whether receive the packet of being transmitted by source eNB by the sequence number and the state bitmap of the packet of reference source eNB forwarding.For example: the sequence number of the packet that first sign is corresponding is 88002 o'clock, according to Figure 10, the sequence number of data to be transferred bag is 88002,88004,88006 and 88007, when target eNB after to receive sequence number be several packets of 88002,88004,88006 and 88007, just know to have received the packet that all need be forwarded by source eNB.
If state bitmap shown in Figure 10 is based on the sequence number of packet to be transmitted, then need be on X2 interface the sequence number of Data transmission bag, when long, the shared bit of the sequence number of packet is many, in order to save resource, can adopt the reduction sequence number of getting the low bit of part, for example: the least-significant byte of getting the sequence number of actual data packet according to setting in advance, target eNB also takes corresponding low bit to reduce sequence number when the sequence number of matching status bitmap and packet accordingly.
Step 905, target eNB are waited for and are received the packet that is forwarded by source eNB, receive the operation of the packet that is forwarded by source eNB then in the execution in step 903.
Step 906, target eNB finish source eNB is transmitted the wait reception processing of packet, so that the packet that timely diversion treatments is issued by the S1 interface by EPC.
As shown in figure 11, be the flow chart of method for processing forwarding the 8th embodiment of packet of the present invention, this embodiment may further comprise the steps:
Step 1101, source eNB is when transmitting last not by the packet of terminal response to target eNB, a last bag sign is set in this packet or transmits the end sign, inform that this packet of target eNB is last packet that need be transmitted to target eNB, and this packet is transmitted to target eNB.
When step 1102, target eNB receive source eNB forwards carry last bag sign or transmit the packet that finishes sign, according to the last bag sign in this packet or transmit and finish sign, know that packet is transmitted to finish.
Step 1103, target eNB finish source eNB is transmitted the wait reception processing of packet, so that the packet that timely diversion treatments is issued by the S1 interface by EPC.
As shown in figure 12, be the flow chart of method for processing forwarding the 9th embodiment of packet of the present invention, this embodiment may further comprise the steps:
Step 1201, source eNB sends a packet to target eNB and transmits the notification message that finishes when transmitting last packet to target eNB; Or after sending a packet, in time send a packet and transmit the notification message that finishes to target eNB to target eNB.
Step 1202, target eNB receive the packet of source eNB transmission and transmit the notification message that finishes, and know that the packet forwarding finishes.
Step 1203, target eNB finish source eNB is transmitted the wait reception processing of packet, so that the packet that timely diversion treatments is issued by the S1 interface by EPC.
In the embodiment shown in Fig. 3,4,8,9,11 and 12, whether continuous for source eNB data to be transferred bag, and to the situation whether data on the X2 interface are transmitted according to sequence number, all be suitable for.
In above-mentioned each data forwarding Processing Example of the present invention, receive packet on the X2 interface for fear of the unnecessary wait of target eNB, save target eNB because the spent time on the reception packet X2 interface, when source eNB finds not exist not by the packet of terminal response, that is to say, when not having the packet that need be transmitted to target eNB, send the notification message that has the data to be transferred bag to target eNB.
In addition, in the various embodiments described above of the present invention, after target eNB is known the sequence number or state bitmap that needs receive, if source eNB receives terminal is transmitted to the packet of target eNB to needs response message again, source eNB is also according to the response message of terminal, and notification target eNB does not need the data packet number or the sequence number that receive again; Accordingly, target eNB sequence number or the state bitmap for the treatment of the packet of reception according to the notification message of source eNB upgrades.
Further, in order to guarantee the robustness of LTE system, avoid being in unnecessary states such as sky owing to the link failure between source eNB and the target eNB makes target eNB, a timer also can be set in target eNB and set in advance this and switch the maximum duration that is allowed, in handoff procedure, when target eNB sends handover request ack message to source eNB, starting timer picks up counting, when timer expiry, that is: when reaching moment of maximum duration regulation of timer, even do not receive the packet of transmitting by source eNB, target eNB also no longer wait for to receive the packet of being transmitted by source eNB, immediately the packet that issued by the S1 interface by EPC of diversion treatments.
As shown in figure 13, structural representation for eNB first embodiment of the present invention, the eNB that this embodiment provides can be used as the source eNB of the method for processing forwarding terminal that realizes the above-mentioned packet of the present invention, and it comprises interconnective message processing module 1301 and sending module 1302.Wherein, corresponding with the method for processing forwarding embodiment of above-mentioned packet of the present invention, message processing module 1301 is used for adding up this number or maximum sequence number of switching the packet that needs to be transmitted to target eNB, or generate the state bitmap of data to be transferred bag or the notification message that forwarding finishes, or generation carries last bag sign or transmits the packet that finishes sign, in addition, when needing to be transmitted to the maximum sequence number of the packet of target eNB during this switches in statistics, can also add up the smallest sequence number that this needs to be transmitted to the packet of target eNB in switching; Sending module 1302 is used for the number or the maximum sequence number of notification target eNB data to be transferred bag, or the notification message that finishes of state bitmap or forwarding, or carry last bag sign or transmit the packet that finishes sign, in addition, when the maximum sequence number of notification target eNB data to be transferred bag, the smallest sequence number of all right notification target eNB data to be transferred bag when existence need be transmitted to the packet of target eNB, also is used to send this packet.
In eNB embodiment illustrated in fig. 13, can also comprise writing module 1401, be connected with message processing module 1301, be used for indication according to message processing module 1301, with the number of data to be transferred bag, or last bag sign or transmit finishes to send to message processing module 1301 in the packet that sign writes the signaling message that sent by X2 interface or forwarding; Sending module 1302 is by sending the number that the number that writes the data to be transferred bag comes notification target eNB data to be transferred bag to target eNB, by writing last bag sign to the target eNB transmission or transmitting the signaling message or the packet that finish sign and come the forwarding of notification target eNB packet to finish.As shown in figure 14, be the structural representation of eNB second embodiment of the present invention.
As shown in figure 15, structural representation for eNB the 3rd embodiment of the present invention, the eNB that this embodiment provides can be used as the target eNB of the method for processing forwarding terminal that realizes the above-mentioned packet of the present invention, and it comprises receiver module 1501, the judge module 1502 and indicating module 1503 that connects successively.Corresponding with sending module 1302, receiver module 1501 is used to receive number or the maximum sequence number or the state bitmap of the packet that need be transmitted by source eNB, or transmit the notification message finish, or carry last bag sign or transmit the packet that finishes sign, need be if exist by the packet of source eNB forwarding, then receiver module 1501 also is used to receive the packet of being transmitted by source eNB; Judge module 1502 is used for number or the maximum sequence number or the state bitmap of the data to be transferred bag that receives according to receiver module 1501, or transmit the notification message finish, or carry last bag sign or transmit the packet that finishes sign, or, judge whether to receive all data that need transmit by source eNB and export judged result further combined with the number or the sequence number of the packet of transmitting by source eNB that receives; Indicating module 1503 is used for according to described judged result, after receiver module 1501 receives all packets that need be transmitted by source eNB, indication processing module 1504 finishes source eNB is transmitted the wait reception processing of packet, so that in time handle the packet that is issued by EPC.Can set handling module 1504 among the eNB, with indicating module 1503, be used to handle the packet that receives, this packet can be the packet that is sent by EPC or source eNB or terminal.
In the embodiment shown in fig. 15, can also comprise memory module 1601, be connected with receiver module 1501 and judge module 1502 respectively, be used to store that receiver module is 1501 that receive, number or the maximum sequence number or the state bitmap of the packet that need be transmitted by source eNB, so that judge module 1502 is when receiver module 1501 receives the packet that is sent by sending module 1302, according to number or the maximum sequence number or the state bitmap of storage in the memory module 1601, judging whether to receive need be by the packet of source eNB forwarding.As shown in figure 16, be the structural representation of eNB the 4th embodiment of the present invention.
In addition, among Figure 15 or the embodiment shown in Figure 16, target eNB can also comprise computing module 1701, be connected with receiver module 1601 and memory module 1601 respectively, be used for being handed down to the sequence number of first packet of receiver module 160 according to EPC, the maximum sequence number of the packet that calculating need be transmitted by source eNB, and can further be stored in the memory module 1601.As shown in figure 17, be the structural representation of eNB the 5th embodiment of the present invention.
Further, in the target eNB that the above embodiment of the present invention provides, can also comprise the timer 1801 that is connected with receiver module 1501, and the trigger module 1802 that is connected with timer 1801, judge module and indicating module 1503 respectively.Wherein, timer 1801 is used for timing, can set in advance the maximum duration of this timer 1801; Trigger module 1802 is used for starting timer 1801 when the sending module 1302 of receiver module 1501 in the eNB of source of target eNB sends handover request ack message and picks up counting, and during in satisfying following two conditions any one: current time reaches the moment of the maximum duration regulation of timer 1801, or according to judged result, receive any one condition in all packets that need transmit by source eNB at receiver module 1501, trigger indicating module 1503, that is: trigger these indicating module 1503 indication receiver modules 1501 and finish the wait reception of source eNB forwarding packet is handled.As shown in figure 18, be the structural representation of eNB the 6th embodiment of the present invention.
As shown in figure 19, be the structural representation of EPC embodiment of the present invention, the EPC of this embodiment comprises interconnective collection module 1901 and issues module 1902.Wherein, collection module 1901 be used to collect issue module 1902 be handed down to source eNB packet maximum sequence number or be handed down to the sequence number of first packet of target eNB; Issuing module 1902 is connected with receiver module 1501, be used for issuing packet to source eNB and target eNB, in addition, according to the information that collection module 1901 is collected, notification target eNB be handed down to source eNB packet maximum sequence number or be handed down to the sequence number of first packet of target eNB.
As shown in figure 20, transmit the structural representation of treatment system first to eight embodiment for packet of the present invention, this packet is transmitted treatment system and is comprised source eNB and target eNB, wherein, source eNB can adopt the eNB of Figure 13 or embodiment shown in Figure 14, target eNB can adopt the eNB of Figure 15, Figure 16, Figure 17 or embodiment shown in Figure 180 respectively, and the sending module 1302 among the eNB of source carries out information interaction with the receiver module 1501 in the target eNB.The packet of this first to six embodiment is transmitted treatment system can be applied to realize the present invention such as Fig. 2 to Fig. 4, Fig. 6 method for processing forwarding to packet embodiment illustrated in fig. 12 mutually.
As shown in figure 21, transmit the structural representation of treatment system the 9th to the 12 embodiment for packet of the present invention, this packet is transmitted treatment system and is comprised EPC and target eNB, wherein, EPC can adopt the EPC of embodiment shown in Figure 19, target eNB can adopt the eNB of Figure 15 or embodiment shown in Figure 17 respectively, and the receiver module 1501 in the target eNB carries out information interaction with EPC.Nine, the packet of the tenth embodiment forwarding treatment system can be used for realizing the present invention's method for processing forwarding of the packet of embodiment as shown in Figure 5.
In the embodiment of the invention, the maximum sequence number of the packet of the source of the being handed down to eNB that target eNB sends according to EPC or be handed down to the sequence number of first packet of this target eNB, or source eNB send this need to be transmitted to the number or the maximum sequence number of the packet of target eNB in switching, or the state bitmap of data to be transferred bag or notification message that forwarding finishes, or carry last bag sign or transmit the packet that finishes sign, packet in conjunction with current reception, when receiving, can in time know by source eNB forwarding packet, thereby finish source eNB is transmitted the wait reception processing of packet immediately, so that in time diversion treatments is from the next packet of S1 interface, minimized losing of downlink data packet, repeat, out of order transmission and break period, and, compared with prior art, both guaranteed source eNB is transmitted the preferential reception processing of data, prevented that again the unnecessary wait of target eNB from receiving the time of being transmitted packet by source eNB, improved the operating efficiency of LTE system.
It should be noted last that: above embodiment is only in order to illustrating technical scheme of the present invention, but not the present invention is made restrictive sense.Although the present invention is had been described in detail with reference to above-mentioned preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and this modification or be equal to the spirit and scope that replacement does not break away from technical solution of the present invention.

Claims (19)

1, a kind of method for processing forwarding of packet is characterized in that, comprising:
Whether destination node detection resources node has transmitted all data to be transferred bags, when described destination node detects described source node and transmitted all data to be transferred bags, finishes the reception of packet that described source node is transmitted and handles.
2, the method for processing forwarding of packet according to claim 1 is characterized in that, described destination node detects described source node and transmitted all data to be transferred bags and be specially:
Described source node is notified the number of described destination node data to be transferred bag, when described destination node reaches the number of described data to be transferred bag at the number of the packet that receives, knows that described source node transmits all data to be transferred bags.
3, the method for processing forwarding of packet according to claim 2 is characterized in that, described source node notifies the number of described destination node data to be transferred bag to be specially:
Described source node is notified the number of the described data to be transferred bag of described destination node by message mode; Perhaps,
Described source node sends signaling message by X2 interface to described destination node, comprises the number of described data to be transferred bag in the described signaling message; Perhaps,
Described source node writes the number of described data to be transferred bag in the described data to be transferred bag and sends to described destination node.
According to the method for processing forwarding of claim 2 or 3 described packets, it is characterized in that 4, the number that the number of the packet that receives reaches described data to be transferred bag is specially:
Described destination node is stored the number of described data to be transferred bag, upgrade according to the number of the packet that receives number the data to be transferred bag of described storage, when the number of the data to be transferred bag after renewal was zero, the number of the packet that receives reached the number of described data to be transferred bag.
5, the method for processing forwarding of packet according to claim 1 is characterized in that, described destination node detects described source node and transmitted all data to be transferred bags and be specially:
Described destination node obtains the maximum sequence number of data to be transferred bag in the described source node, when described destination node is described maximum sequence number in the sequence number of the packet that receives, knows that described source node transmits all data to be transferred bags.
6, the method for processing forwarding of packet according to claim 5 is characterized in that, described destination node also obtains the smallest sequence number of described data to be transferred bag; When described destination node comprises full sequence number packet from described smallest sequence number to described maximum sequence number in reception, know that described source node transmits all data to be transferred bags.
7, the method for processing forwarding of packet according to claim 6 is characterized in that, the smallest sequence number that described destination node obtains the packet that need be transmitted by described source node is specially:
Described source node is notified the smallest sequence number of described destination node data to be transferred bag.
According to the method for processing forwarding of claim 5,6 or 7 described packets, it is characterized in that 8, the maximum sequence number that described destination node obtains the packet that need be transmitted by described source node is specially:
Described destination node obtains the sequence number of first packet that packet core apparatus issues, and the sequence number of described first packet is subtracted 1, obtains the maximum sequence number of described data to be transferred bag; Perhaps,
The maximum sequence number that described packet core apparatus notifies this packet core apparatus of described destination node to be handed down to the packet of described source node, described destination node are known the maximum sequence number of data to be transferred bag by the maximum sequence number of the packet that is handed down to described source node; Perhaps,
Described source node is notified the maximum sequence number of the packet that described destination node need be transmitted by described source node.
9, the method for processing forwarding of packet according to claim 1 is characterized in that, described destination node detects described source node and transmitted all data to be transferred bags and be specially:
Described source node generates the state bitmap according to described data to be transferred bag, and described state bitmap is sent to described destination node, when the packet that described destination node receives satisfies described state bitmap and requires, knows that described source node transmits all data to be transferred bags.
10, the method for processing forwarding of packet according to claim 9 is characterized in that, the packet that described destination node receives satisfies described state bitmap and requires to be specially:
The number of the packet that described destination node receives reaches the number that described state bitmap requires the packet transmitted; Perhaps,
Described destination node receives the packet of the sequence number of complete described state bitmap requirement forwarding.
11, the method for processing forwarding of packet according to claim 1 is characterized in that, described destination node detects described source node and transmitted all data to be transferred bags and be specially:
Described source node sends a notification message to described destination node, comprises in the described notification message that packet is transmitted to finish or do not have the data to be transferred bag, perhaps
Described source node writes last bag sign or transmits the end sign in being transmitted to last packet of described destination node;
Described destination node is according to described notification message, and the last bag sign in the perhaps described packet or transmit and finish sign knows that described source node transmits all data to be transferred bags.
12, according to the method for processing forwarding of any described packet of claim 1 to 11, it is characterized in that, also comprise:
The maximum duration of timer is set in described destination node in advance, when described destination node sends handover request ack message to described source node, starting described timer picks up counting, reach described maximum duration or described destination node at current time and detect when receiving all data to be transferred bags, described destination node finishes the reception of packet that described source node is transmitted to be handled.
13, a kind of node is characterized in that, comprising:
Message processing module, the number or the maximum sequence number that are used to add up the data to be transferred bag, or the state bitmap or the data to be transferred bag that generate the data to be transferred bag transmit the notification message that finishes, or generate and carry last bag sign or transmit the packet that finishes sign;
Sending module, be used for sending the number or the maximum sequence number of the described data to be transferred bag of described message processing module statistics to other node, or the notification message that finishes of the state bitmap that produces of described message processing module or forwarding, or described message processing module produce carry last bag sign or transmit the packet that finishes sign.
14, node according to claim 13 is characterized in that, also comprises:
Writing module is used for the number with described data to be transferred bag, or described last bag identifies or forwarding finishes to identify in the signaling message that writes by the X2 interface transmission, or writes in the data to be transferred bag.
15, a kind of node is characterized in that, comprising:
Receiver module is used to receive number or the maximum sequence number or the state bitmap of the packet that other node transmits, or the data to be transferred bag transmits the notification message that finishes, or carries last bag sign or transmit the packet that finishes sign;
Judge module, be used for number or maximum sequence number or state bitmap according to the data to be transferred bag of described receiver module reception, or transmit the notification message finish, or carry last bag sign or transmit the packet that finishes sign, judge whether to receive all data that need transmit by described source node and export judged result;
Indicating module is used for the judged result according to described judge module, after described receiver module is received all data to be transferred bags, indicates described receiver module end that the reception of the packet of described source node forwarding is handled.
16, node according to claim 15 is characterized in that, also comprises:
Computing module, be used for receiving according to described receiver module, packet core apparatus is handed down to the sequence number of first packet of described other node, the maximum sequence number of the packet that calculating need be transmitted by described other node.
17, according to claim 15 or 16 described nodes, it is characterized in that, also comprise:
Memory module is used to store number or the maximum sequence number or the state bitmap of described data to be transferred bag.
18, according to claim 15 or 16 described nodes, it is characterized in that, also comprise:
Timer is used to set in advance a maximum duration, and timing;
Trigger module is used for starting described timer when described other node sends handover request ack message and picks up counting, and when current time reaches described maximum duration or described receiver module and receives all data to be transferred bags, triggers described indicating module.
19, a kind of packet core apparatus is characterized in that, comprising:
Collection module is used to collect the maximum sequence number of the packet that is handed down to source node or is handed down to the sequence number of first packet of described destination node;
Issue module, be used for issuing packet, and the maximum sequence number of the packet that is handed down to source node that described notifying section point is collected or the sequence number that is handed down to first packet of described destination node send to described destination node to described source node.
CN 200710126762 2007-06-20 2007-06-20 Method for processing forwarding of data packet, node and packet core apparatus Active CN101330451B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 200710126762 CN101330451B (en) 2007-06-20 2007-06-20 Method for processing forwarding of data packet, node and packet core apparatus
PCT/CN2008/071394 WO2008154885A1 (en) 2007-06-20 2008-06-20 Method for repeating process of data packets, node and packet core device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200710126762 CN101330451B (en) 2007-06-20 2007-06-20 Method for processing forwarding of data packet, node and packet core apparatus

Publications (2)

Publication Number Publication Date
CN101330451A true CN101330451A (en) 2008-12-24
CN101330451B CN101330451B (en) 2013-01-30

Family

ID=40155929

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200710126762 Active CN101330451B (en) 2007-06-20 2007-06-20 Method for processing forwarding of data packet, node and packet core apparatus

Country Status (2)

Country Link
CN (1) CN101330451B (en)
WO (1) WO2008154885A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101835273A (en) * 2009-03-13 2010-09-15 中兴通讯股份有限公司 Random access method and terminal
CN102316561A (en) * 2010-07-08 2012-01-11 上海贝尔股份有限公司 Power-saving method for heterogeneous network and base station
CN102187328B (en) * 2008-09-29 2013-12-25 塔吉特枢转让有限责任公司 Geolocation assisted data forwarding storage
CN103744649A (en) * 2013-12-10 2014-04-23 厦门亿联网络技术股份有限公司 Method for displaying screenshot in instant messaging
CN104125606A (en) * 2013-04-25 2014-10-29 霍尼韦尔国际公司 System and method for optimizing battery life in wireless multi-hop communication systems
US8909738B2 (en) 2008-03-20 2014-12-09 Tajitshu Transfer Limited Liability Company Redundant data forwarding storage
CN106900017A (en) * 2015-12-21 2017-06-27 中兴通讯股份有限公司 Data inverse-transmitting method and device
US9961144B2 (en) 2008-03-20 2018-05-01 Callahan Cellular L.L.C. Data storage and retrieval
WO2018176419A1 (en) * 2017-03-31 2018-10-04 华为技术有限公司 Data migration method and apparatus
CN110134721A (en) * 2019-05-17 2019-08-16 智慧足迹数据科技有限公司 Data statistical approach, device and electronic equipment based on bitmap
CN110211416A (en) * 2019-06-06 2019-09-06 泉州市华祥工业设计有限公司 The information transferring method and system of Internet of Things intelligent garage
CN110557848A (en) * 2018-06-01 2019-12-10 华为技术有限公司 Communication method and device
CN111786859A (en) * 2020-07-17 2020-10-16 中国联合网络通信集团有限公司 Packet loss detection method, device and storage medium
CN116546556A (en) * 2023-06-29 2023-08-04 中国电信股份有限公司 Data forwarding control method and device, storage medium and electronic equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6704311B1 (en) * 1999-06-25 2004-03-09 Lucent Technologies Inc. Application-level switching server for internet protocol (IP) based networks
CN1177452C (en) * 2002-01-30 2004-11-24 华为技术有限公司 Method for transmission of protocol data unit information
US7400585B2 (en) * 2004-09-23 2008-07-15 International Business Machines Corporation Optimal interconnect utilization in a data processing network
CN100596357C (en) * 2005-12-02 2010-03-31 浙江中控技术股份有限公司 Data translation device and system based on ethernet and serial communication technology

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8909738B2 (en) 2008-03-20 2014-12-09 Tajitshu Transfer Limited Liability Company Redundant data forwarding storage
US9961144B2 (en) 2008-03-20 2018-05-01 Callahan Cellular L.L.C. Data storage and retrieval
CN102187328B (en) * 2008-09-29 2013-12-25 塔吉特枢转让有限责任公司 Geolocation assisted data forwarding storage
CN101835273A (en) * 2009-03-13 2010-09-15 中兴通讯股份有限公司 Random access method and terminal
CN101835273B (en) * 2009-03-13 2015-06-03 中兴通讯股份有限公司 Random access method and terminal
WO2012004663A3 (en) * 2010-07-08 2012-03-01 Alcatel Lucent Method and evolved node-b (enb) for power saving in heterogeneous network
CN102316561B (en) * 2010-07-08 2015-01-07 上海贝尔股份有限公司 Power-saving method for heterogeneous network and base station
WO2012004663A2 (en) * 2010-07-08 2012-01-12 Alcatel Lucent Method and enb for power saving in a heterogeneous network
CN102316561A (en) * 2010-07-08 2012-01-11 上海贝尔股份有限公司 Power-saving method for heterogeneous network and base station
CN104125606A (en) * 2013-04-25 2014-10-29 霍尼韦尔国际公司 System and method for optimizing battery life in wireless multi-hop communication systems
CN104125606B (en) * 2013-04-25 2019-12-10 霍尼韦尔国际公司 System and method for optimizing battery life in a wireless multi-hop communication system
CN103744649A (en) * 2013-12-10 2014-04-23 厦门亿联网络技术股份有限公司 Method for displaying screenshot in instant messaging
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
WO2018176419A1 (en) * 2017-03-31 2018-10-04 华为技术有限公司 Data migration method and apparatus
US11240712B2 (en) 2017-03-31 2022-02-01 Huawei Technologies Co., Ltd. Data migration method and apparatus
CN110557848A (en) * 2018-06-01 2019-12-10 华为技术有限公司 Communication method and device
CN110557848B (en) * 2018-06-01 2021-02-12 华为技术有限公司 Communication method and device
CN110134721A (en) * 2019-05-17 2019-08-16 智慧足迹数据科技有限公司 Data statistical approach, device and electronic equipment based on bitmap
CN110134721B (en) * 2019-05-17 2021-05-28 智慧足迹数据科技有限公司 Data statistics method and device based on bitmap and electronic equipment
CN110211416A (en) * 2019-06-06 2019-09-06 泉州市华祥工业设计有限公司 The information transferring method and system of Internet of Things intelligent garage
CN111786859A (en) * 2020-07-17 2020-10-16 中国联合网络通信集团有限公司 Packet loss detection method, device and storage medium
CN116546556A (en) * 2023-06-29 2023-08-04 中国电信股份有限公司 Data forwarding control method and device, storage medium and electronic equipment
CN116546556B (en) * 2023-06-29 2023-09-29 中国电信股份有限公司 Data forwarding control method and device, storage medium and electronic equipment

Also Published As

Publication number Publication date
WO2008154885A1 (en) 2008-12-24
WO2008154885A8 (en) 2009-06-04
CN101330451B (en) 2013-01-30

Similar Documents

Publication Publication Date Title
CN101330451B (en) Method for processing forwarding of data packet, node and packet core apparatus
US20230156537A1 (en) Methods and system for performing handover in a wireless communication system
CN113423123B (en) Method for supporting seamless switching and base station equipment
CN101641984B (en) Mobile communication system and communication method
CN101370283B (en) Method and apparatus for processing non-access layer message in switching course of evolution network
EP1891817B1 (en) Method of communicating signals in a mobile communication system
CN104837127B (en) Communication method performed by secondary base station and primary base station and corresponding base station
CN104935414A (en) Method for transmitting information in dual connection system and device
CN101400156A (en) Downlink and uplink data packet forwarding method based on S1 switching
CN101888675A (en) Cross-base station switching method and system in long term evolution system
CN101237681A (en) Data transmission method, long-term evolving system and device in switching
CN101374350B (en) Handover method and apparatus in a wireless telecommunications network
CN105432115A (en) Method and apparatus for dual connectivity
CN101247238B (en) Method and system for data flux statistics
CN109155951A (en) transmission method, base station and terminal
US8825055B2 (en) Base station, mobile communication system using the base station, and data transfer method
CN111556523A (en) Data transmission method and base station
CN102474337B (en) Method for processing data on relay link and related device
CN102246554B (en) Switching process method, relay node and target node
WO2022128213A1 (en) Handover
CN102111835B (en) Method and device for processing non-access stratum message in handover process of network evolution
CN114125954A (en) Data transmission method, system and base station

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant