CN104066128A - Data sending method and device - Google Patents
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- CN104066128A CN104066128A CN201410299578.1A CN201410299578A CN104066128A CN 104066128 A CN104066128 A CN 104066128A CN 201410299578 A CN201410299578 A CN 201410299578A CN 104066128 A CN104066128 A CN 104066128A
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Abstract
The invention discloses a data sending method and device. The method is that after switching data sent by a source base station is received by a target base station, if the switching data is uplink data, then encryption does not need to be performed, and when the condition that the serial number state signalling corresponding to the switching data is not received by the target base station is determined, continuous UE data is directly sent to core network equipment; and if the switching data is downlink data, then encryption does not need to be performed, and when the condition that the serial number state signalling corresponding to the switching data is not received by the target base station is determined, data is retransmitted based on AM in the switching data, and after a serial number is added to data that not sent by the source base station and the data that sent to the target base station by a core network, a downlink data packet is generated and sent to UE. By adopting the technical scheme of the invention, the target base station can perform data transmission without waiting for the reception of the serial number state signalling, so the data transmission time delay can be reduced, and the data transmission efficiency and the system performance can be improved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of data transmission method for uplink and device.
Background technology
In mobile communication technology, the propagation characteristic of movable signal and UE (User equipment, subscriber equipment) mobility, capital causes the UE dynamic change of movable signal and interference signal around, for example, when UE moves to another base station range Nei community from a base station range Nei community, or when UE is positioned at the cell boarder of base station range, for ensure UE and mobile network continue communicate by letter, the better base station of user and signal quality is connected, and realize the load balancing between floored community at hot zones, UE need to be switched to target BS coverage Nei community from source base station coverage Nei community.Consult the schematic diagram that Figure 1 shows that UE community intersection in many base station ranges.
In the harmless handoff procedure in community, in making UE switch access target BS, need source base station that data corresponding UE are sent to target BS, so that after UE access target BS, the data communication service before can continuing with base station and equipment of the core network.In LTE network, UE passes through LTE base station (as eNB, evolved NodeB), EPC (Evolved Packet Core, Evolved Packet Core) and server between data communication service type have multiple, corresponding to base station RLC (Radio Link Control, wireless link control) layer each entity have three kinds of pattern: AM (Acknowledge Mode, affirmation mode), UM (Unacknowledged Mode, Unacknowledged Mode) and TM (Transparent Mode, transparent mode).Wherein, ARQ (Automatic Repeat-reQuest, the HARQ) function of the corresponding RLC entity of AM pattern, also requires PDCP entity to have supporting buffer memory retransmission mechanism simultaneously.
Consult shown in Fig. 2, in cell switch process, the process that data that what target BS sent source base station switch are sent to UE or equipment of the core network is:
Step 200: what target BS reception sources base station sent switches data, and this is switched data and carries out caching process.
The above-mentioned data of switching comprise that AM data retransmission (being that source base station does not receive the data of ACK message that UE sends), source base station also do not send to the data of UE and rlc layer to be sent to the discontinuous upstream data of sequence number of PDCP layer, wherein, AM data retransmission is base station and does not receive that UE ACK's (Acknowledge, confirm) is data cached.
Step 210: target BS is determined behind UE access this locality, in the time that judgement receives serial-number-state signaling, the above-mentioned data of switching are added after sequence number and encryption, continuous part in upstream data is sent to equipment of the core network, downlink data is sent to UE.
Based on existing communication agreement, after generally target BS must wait for that serial-number-state signaling arrives, could send the above-mentioned data of switching, switch the orderly transmission of data and be encrypted switching data ensureing.But above-mentioned AM mode data, in a variety of situations, does not need to be encrypted, now, if target BS does not receive serial-number-state signaling, cannot send fast and switch data immediately, thereby cause data transmission delay larger.
In sum, in cell switch process, exist the data transfer delay time long, the problem that efficiency of transmission is low at present.
Summary of the invention
The embodiment of the present invention provides a kind of data transmission method for uplink and device, in order to solve at present in cell switch process, exists the data transfer delay time long, the problem that efficiency of transmission is low.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
A kind of data transmission method for uplink, is applied in wireless communication system, and described wireless communication system comprises target BS, source base station, and equipment of the core network, and user equipment (UE), described method comprises:
What target BS reception sources base station sent switches data; Wherein, described in, switch data and comprise that affirmation mode AM data retransmission and source base station are not sent to the downlink data of user equipment (UE) and the discontinuous upstream data that packet data polymerized agreement PDCP layer receives;
When the described data of switching are while being upstream data, if described target BS is determined UE, access is local, and switch serial-number-state signaling corresponding to data described in not receiving that described source base station sends, need not encrypt when switching data described in judgement, and described in switch sequence number corresponding to data and meet when pre-conditioned, described in sending to described equipment of the core network, switch data;
When the described data of switching are while being downlink data, if described target BS is determined UE, access is local, and switch serial-number-state signaling corresponding to data described in not receiving that described source base station sends, described in judging, switch data need not encrypt time, be that described source base station is not sent to after the downlink data interpolation sequence number of UE according to described AM data retransmission, the downlink data that described source base station based on described AM data retransmission and interpolation sequence number is not sent to UE generates downlink data packet, and sends described downlink data packet to described UE.
Optionally, if determining, described target BS receives first new data packets that described UE sends, described target BS was judged before described first new data packets arrives, local preserve described in when switching sequence number corresponding to all packets that packet contains and increasing progressively successively, to the described equipment of the core network data of switching that increase progressively successively that transmit Sequence Number; If determining, described target BS receives the new data that described UE sends, when described target BS is switched sequence number corresponding to all packets comprising in the upstream data bag that new data that data send with described UE forms described in judging and had continuous part, the upstream data bag of sequence number continuous part is sent to described equipment of the core network.
Optionally, described target BS is according to the serial-number-state information of carrying in described AM data retransmission, determine maximum sequence number in described serial-number-state information, and the described maximum sequence number of determining is increased after default value, be not sent to sequence number corresponding to first packet comprising in the downlink data of UE as described source base station, and described sequence number be added in the data head of described the first packet; Described target BS is according to sequence number corresponding to described first packet, is followed successively by the data head of other packets except described first packet that comprise in the downlink data that described source base station is not sent to UE and adds corresponding sequence number; Described target BS is not sent to downlink data and the described AM data retransmission of UE according to the described source base station that adds described serial number data head, generate downlink data packet and be sent to described UE.
Further, in the time receiving serial-number-state signaling, described target BS is according to the sequence number carrying in described serial-number-state signaling, generates described source base station and be not sent to the data head of the downlink data of UE; The described source base station that adds described sequence number is not sent to UE by described target BS downlink data and described AM data retransmission are sent to described UE.
Further, in the time receiving equipment of the core network and send to the descending new data of target BS, if determining, described target BS do not receive serial-number-state signaling corresponding to described descending new data that described source base station sends, in the time judging that described descending new data need not be encrypted, according to the AM data retransmission carrying in descending new data, for described descending new data adds sequence number; Described target BS, by adding described descending new data and the described AM data retransmission of sequence number, is sent to described UE.
Adopt technique scheme, the sequence number information that target BS utilizes AM data retransmission to carry is calculated sequence number corresponding to data of switching in data, and be sent to UE after this sequence number being added to the head of data, thereby ensure to be sent to the downlink data of UE orderly in, effectively improved data transmission efficiency.
A kind of data sending device, is applied in wireless communication system, and described device comprises:
Receiving element, for the data of switching of reception sources base station transmission; Wherein, described in, switch data and comprise that affirmation mode AM data retransmission and source base station are not sent to the discontinuous upstream data receiving to downlink data and the packet data polymerized agreement PDCP layer of user equipment (UE);
Upstream data transmitting element, for when described in switch data while being upstream data, if determine, UE access is local, and switch serial-number-state signaling corresponding to data described in not receiving that described source base station sends, need not encrypt when switching data described in judgement, and described in switch sequence number corresponding to data and meet when pre-conditioned, described in sending to equipment of the core network, switch data;
Downlink data transmitting element, for when described in switch data while being downlink data, if determine, UE access is local, and switch serial-number-state signaling corresponding to data described in not receiving that described source base station sends, described in judging, switch data need not encrypt time, be that described source base station is not sent to after the downlink data interpolation sequence number of UE according to described AM data retransmission, the downlink data that described source base station based on described AM data retransmission and interpolation sequence number is not sent to UE generates downlink data packet, and sends described downlink data packet to described UE.
Optionally, described upstream data transmitting element, specifically for: receive first new data packets that described UE sends if determine, judged before described first new data packets arrives, local preserve described in when switching sequence number corresponding to all packets that packet contains and increasing progressively successively, to the described equipment of the core network data of switching that increase progressively successively that transmit Sequence Number; Receive the new data that described UE sends if determine, when switching sequence number corresponding to all packets comprising in the upstream data bag that new data that data send with described UE forms described in judging and having continuous part, the upstream data bag of sequence number continuous part is sent to described equipment of the core network.
Optionally, described downlink data transmitting element, specifically for: according to the serial-number-state information of carrying in described AM data retransmission, determine maximum sequence number in described serial-number-state information, and the described maximum sequence number of determining is increased after default value, be not sent to sequence number corresponding to first packet comprising in the downlink data of UE as described source base station, and described sequence number be added in the data head of described the first packet; According to sequence number corresponding to described first packet, be followed successively by the data head of other packets except described first packet that comprise in the downlink data that described source base station is not sent to UE and add corresponding sequence number; Be not sent to downlink data and the described AM data retransmission of UE according to the described source base station that adds described serial number data head, generate downlink data packet and be sent to described UE.
Further, described downlink data transmitting element, also for:
If described in to switch data be downlink data, in the time receiving serial-number-state signaling, described target BS is according to the sequence number carrying in described serial-number-state signaling, generates described source base station and be not sent to the data head of the downlink data of UE; The data and the described AM data retransmission that add described sequence number are sent to described UE.
Further, described downlink data transmitting element, also for: in the time receiving equipment of the core network and send to the descending new data of target BS, do not receive serial-number-state signaling corresponding to described descending new data that described source base station sends if determine, in the time judging that described descending new data need not be encrypted, according to the AM data retransmission carrying in descending new data, for described descending new data adds sequence number; By adding described descending new data and the described AM data retransmission of sequence number, be sent to described UE.
Adopt technique scheme, the sequence number information that target BS utilizes AM data retransmission to carry is calculated sequence number corresponding to data of switching in data, and be sent to UE after this sequence number being added to the head of data, thereby ensure to be sent to the downlink data of UE orderly in, effectively improved data transmission efficiency.
In the embodiment of the present invention, when target BS receive source base station send switch data after, if this switches data is upstream data, and need not encrypt,, when determining that target BS does not receive while switching serial-number-state signaling corresponding to data, directly sequence number is met to the pre-conditioned data of switching is sent to equipment of the core network; If this switches data is downlink data, and need not encrypt, when determining that target BS does not receive while switching serial-number-state signaling corresponding to data, based on the AM data retransmission of switching in data, and the data of adding the source base station of sequence number and be not sent to UE, generate downlink data packet and be sent to UE.Adopt technical solution of the present invention, in the time determining that switching data need not encrypt, need not monitor and wait for whether target BS receives serial-number-state signaling, thereby reduce data transmission delay, improved data transmission efficiency and systematic function.
Brief description of the drawings
Fig. 1 is the structural representation that in prior art, terminal is positioned at multiple communities;
Fig. 2 is data transmission flow figure in the handoff procedure of prior art small area;
Fig. 3 is wireless communication system architecture schematic diagram in the embodiment of the present invention;
Fig. 4 is data transmission flow figure in the handoff procedure of embodiment of the present invention small area;
Fig. 5 is data sending device structural representation in the embodiment of the present invention.
Embodiment
In order to solve at present in cell switch process, exist the data transfer delay time long, the problem that efficiency of transmission is low.In the embodiment of the present invention, when target BS receive source base station send switch data after, if this switches data is upstream data, and need not encrypt,, when determining that target BS does not receive while switching serial-number-state signaling corresponding to data, directly sequence number is met to the pre-conditioned data of switching is sent to equipment of the core network; If this switches data is downlink data, and need not encrypt, when determining that target BS does not receive while switching serial-number-state signaling corresponding to data, based on the AM data retransmission of switching in data, and the data of adding the source base station of sequence number and be not sent to UE, generate downlink data packet and be sent to UE.Adopt technical solution of the present invention, in the time determining that switching data need not encrypt, need not monitor and wait for whether target BS receives serial-number-state signaling, thereby reduce data transmission delay, improved data transmission efficiency and systematic function.
Consult shown in Fig. 3, in the embodiment of the present invention, wireless communication system architecture schematic diagram, this wireless communication system comprises source base station, target BS, terminal, and equipment of the core network.Wherein, above-mentioned wireless communication system can be applied to 2G (2nd Generation; The second generation) network, 3G (3nd Generation; The third generation) network, and 4G (4nd Generation; The 4th generation) network, be now introduced as LTE system as example taking above-mentioned wireless communication system.
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is elaborated.
Consult shown in Fig. 4, in the embodiment of the present invention, the process that target BS sends data is:
Step 400: what target BS reception sources base station sent switches data.
In the embodiment of the present invention, the above-mentioned data of switching comprise that AM data retransmission and source base station are not sent to the downlink data of UE, the downlink data that this source base station is not sent to UE comprises that source base station is not sent to the data of UE, and the discontinuous upstream data that receives of PDCP layer.
Optionally, after what target BS received that source base station sends switch data, this is switched to data and is saved to the appointed area of target BS this locality.
Step 410: when the above-mentioned data of switching are while being upstream data, if target BS is determined UE, access is local, and what do not receive that source base station sends switches serial-number-state signaling corresponding to data, when the above-mentioned data of switching of judgement need not be encrypted, and above-mentioned sequence number corresponding to data of switching meets when pre-conditioned, sends the above-mentioned data of switching to equipment of the core network.
In the embodiment of the present invention, in above-mentioned upstream data bag process of transmitting, because base station rlc layer and PDCP layer have the function of all upstream datas in order state in the upstream data of maintenance bag, therefore, the upstream data that UE sends sends according to the principle of first in first out, will there will not be out of order problem.Based on this, when the above-mentioned data of switching are upstream data, and when UE access target BS is local, if switching data does not need to encrypt, only need to judge whether sequence number corresponding to all packets that the upstream data that comprises in upstream data bag comprises meets pre-conditioned, can determine that whether this sequence number being met to pre-conditioned upstream data bag is sent to equipment of the core network.
Optionally, what if do not receive, source base station sent switches serial-number-state signaling corresponding to data, and whether data are switched in judgement needs to encrypt, and if so, waits for and switches serial-number-state signaling corresponding to data; Otherwise, when above-mentioned sequence number corresponding to data of switching meets when pre-conditioned, send the above-mentioned data of switching to equipment of the core network.
Optionally, judge that above-mentioned sequence number corresponding to data of switching meets when pre-conditioned, send the above-mentioned data of switching to equipment of the core network, be specially: if target BS receives first new data packets (being designated as SN) that UE sends, when target BS is judged switching sequence number corresponding to packet comprising in data and increase progressively successively before SN, send to equipment of the core network the data of switching that above-mentioned sequence number increases progressively successively, as in the time switching packet containing four packets, if four sequence numbers corresponding to packet are respectively 1, 2, 5, 7, and first sequence of data packet number that UE sends is 8, show that these four sequence numbers corresponding to packet meet pre-conditioned, above-mentioned four packets are sent to equipment of the core network by target BS, if target BS receives the new data that UE sends, target BS is judged when sequence number corresponding to packet comprising in the upstream data bag forming in the new data of switching data and UE transmission exists continuous part, the upstream data bag of above-mentioned sequence number continuous part is sent to equipment of the core network, the new data that this UE sends is after UE is linked into target BS, is finally sent to the upstream data of equipment of the core network by target BS.
Optionally, above-mentioned switch data whether need encrypt be configured by base station high level, configuration after base station can by flag bit identify switch data whether need encrypt; For example, in the time switching flag bit corresponding to data and be 1, represent that this switches data and need to encrypt, when switching flag corresponding to data while being 0, identify this and switch data and do not need to encrypt.
Optionally, create the up queue of switching in target BS this locality, for when switching data while being upstream data, store the discontinuous data of switching of above-mentioned sequence number, when above-mentioned up sequence number corresponding to upstream data of storing in queue of switching meets when pre-conditioned, this is met to pre-conditioned upstream data and is sent to equipment of the core network.
Adopt technique scheme, while there is continuous part in sequence number corresponding to all packets comprising as upstream data Bao Liuzhong, can directly send the continuous upstream data bag of this sequence number, need not wait for that target BS receives and switch serial-number-state signaling corresponding to data, effectively reduce transmitting uplink data time delay.
Step 420: when the above-mentioned data of switching are while being downlink data, if target BS is determined UE, access is local, and what do not receive that source base station sends switches serial-number-state signaling corresponding to data, when judging that the above-mentioned data of switching are need not encrypt time, be that source base station is not sent to after the downlink data interpolation serial number data head of UE according to AM data retransmission, the downlink data generation downlink data packet that the source base station based on above-mentioned AM data retransmission and interpolation serial number data head is not sent to UE is sent to UE.
In the embodiment of the present invention, due to downlink data whether in order only can by all packets of comprising in each downlink data respectively corresponding sequence number judge, therefore, when switching data while being downlink data, need to add corresponding sequence number for all packets that comprise in this downlink data.Be specially:
In the time that switching of receiving comprises AM data retransmission in data, target BS, according to the serial-number-state information of carrying in described AM data retransmission, obtains sequence number corresponding to data that source base station does not send; Sequence number corresponding to downlink data that source base station is not sent to UE by target BS is added in the data head of each packet that downlink data that source base station is not sent to UE comprises; Target BS is not sent to the source base station that adds sequence number downlink data and the AM data retransmission of UE, is sent to UE.
Optionally, target BS detect receive switch data, when switching the data that comprise in data while carrying serial-number-state information, judge that these data of carrying serial-number-state information are as AM data retransmission; When switching the data that comprise in data while not carrying serial-number-state information, judge that these data of not carrying serial-number-state information are not sent to the data of UE as source base station.
Optionally, target BS obtains source base station and is not sent to sequence number corresponding to downlink data of UE, is specially: target BS obtains the serial-number-state information of carrying in above-mentioned AM data retransmission, and determines maximum sequence number in above-mentioned serial-number-state information; Target BS will determine that this maximum sequence number increases default value and (is designated as N=1,2,3 ...) after, be not sent to sequence number corresponding to downlink data of UE as source base station; Wherein, AM data retransmission comprises multiple AM retransmission data packet may, all corresponding sequence number of each AM retransmission data packet may.For example, when maximum sequence number in the serial-number-state information of carrying in the AM data retransmission that target BS obtains is 5, and N=1, source base station is not sent to sequence number that in the downlink data packet of UE, each packet is corresponding since 6.
Optionally, create the descending queue of switching in target BS this locality, for when switching data while being downlink data, store above-mentioned AM data retransmission and source base station and be not sent to the data of UE, when above-mentioned descending switching after downlink data that source base station in queue is not sent to UE adds sequence number sends it to UE.
Further, if switching data above-mentioned is downlink data, in the time that the data that source base station are not sent to UE are added sequence number, target BS detects when serial-number-state signaling is arrived in local reception, taking the sequence number that carries in above-mentioned serial-number-state signaling as standard, the downlink data that is not sent to UE for source base station adds sequence number; The data head and the AM data retransmission that add above-mentioned sequence number are sent to UE by target BS.
Further, after UE access target BS, in the time receiving equipment of the core network and be sent to the descending new data of target BS (this downlink data is sent to above-mentioned UE), if determining, target BS do not receive serial-number-state signaling corresponding to descending new data that source base station sends, in the time judging that above-mentioned descending new data need not be encrypted, according to the AM data retransmission carrying in above-mentioned descending new data, the descending new data of receiving for this target BS adds sequence number; The descending new data that adds sequence number is sent to UE by target BS.
Adopt technique scheme, target BS utilizes the serial-number-state information that AM data retransmission carries to calculate sequence number corresponding to new data of switching in data, and be sent to UE after this sequence number being added to the head of new data, thereby ensure to be sent to the downlink data of UE orderly in, effectively improved data transmission efficiency.
Based on technique scheme, consult shown in Fig. 5, in the embodiment of the present invention, also provide a kind of data sending device, be applied in wireless communication system, said apparatus comprises receiving element 50, upstream data transmitting element 51, and downlink data transmitting element 52, wherein:
Receiving element 50, for the data of switching of reception sources base station transmission; Wherein, described in, switch data and comprise that affirmation mode AM data retransmission and source base station are not sent to the downlink data of user equipment (UE) and the discontinuous upstream data that packet data polymerized agreement PDCP layer receives;
Upstream data transmitting element 51, for when described in switch data while being upstream data, if described target BS is determined UE, access is local, and switch serial-number-state signaling corresponding to data described in not receiving that described source base station sends, need not encrypt when switching data described in judgement, and described in switch sequence number corresponding to data and meet when pre-conditioned, described in sending to described equipment of the core network, switch data;
Downlink data transmitting element 52, for when described in switch data while being downlink data, if described target BS is determined UE, access is local, and switch serial-number-state signaling corresponding to data described in not receiving that described source base station sends, described in judging, switch data need not encrypt time, be that described source base station is not sent to after the downlink data interpolation sequence number of UE according to described AM data retransmission, the downlink data that described source base station based on described AM data retransmission and interpolation sequence number is not sent to UE generates downlink data packet, and sends described downlink data packet to described UE.
Optionally, above-mentioned data sending device can be positioned in the middle of target BS, as a part for target BS, also can be positioned at outside target BS, the data of switching that send for the source base station that target BS is received are processed, to improve data transmission efficiency in cell switch process.
In sum, in the embodiment of the present invention, what target BS reception sources base station sent switches data; When the above-mentioned data of switching are while being upstream data, if target BS is determined UE, access is local, and what do not receive that source base station sends switches serial-number-state signaling corresponding to data, when the above-mentioned data of switching of judgement need not be encrypted, and above-mentioned sequence number corresponding to data of switching meets when pre-conditioned, sends the above-mentioned data of switching to equipment of the core network; When the above-mentioned data of switching are while being downlink data, if target BS is determined UE, access is local, and what do not receive that source base station sends switches serial-number-state signaling corresponding to data, when judging that the above-mentioned data of switching are need not encrypt time, be that source base station is not sent to after the downlink data interpolation serial number data head of UE according to AM data retransmission, the downlink data generation downlink data packet that the source base station based on above-mentioned AM data retransmission and interpolation serial number data head is not sent to UE is sent to UE.Adopt technical solution of the present invention, in the time determining that switching data need not encrypt, need not monitor and wait for whether target BS receives serial-number-state signaling, thereby reduce data transmission delay, improved data transmission efficiency and systematic function.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the embodiment of the present invention the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. a data transmission method for uplink, is applied in wireless communication system, it is characterized in that, described method comprises:
What target BS reception sources base station sent switches data; Wherein, described in, switch data and comprise that affirmation mode AM data retransmission and source base station are not sent to the downlink data of user equipment (UE) and the discontinuous upstream data that packet data polymerized agreement PDCP layer receives;
When the described data of switching are while being upstream data, if described target BS is determined UE, access is local, and switch serial-number-state signaling corresponding to data described in not receiving that described source base station sends, need not encrypt when switching data described in judgement, and described in switch sequence number corresponding to data and meet when pre-conditioned, described in sending to described equipment of the core network, switch data;
When the described data of switching are while being downlink data, if described target BS is determined UE, access is local, and switch serial-number-state signaling corresponding to data described in not receiving that described source base station sends, described in judging, switch data need not encrypt time, be that described source base station is not sent to after the downlink data interpolation sequence number of UE according to described AM data retransmission, the downlink data that described source base station based on described AM data retransmission and interpolation sequence number is not sent to UE generates downlink data packet, and sends described downlink data packet to described UE.
2. the method for claim 1, is characterized in that, described in switch data and need not encrypt, and described in switch sequence number corresponding to data and meet when pre-conditioned, described in sending to described equipment of the core network, switch data, specifically comprise:
If determining, described target BS receives first new data packets that described UE sends, described target BS was judged before described first new data packets arrives, local preserve described in when switching sequence number corresponding to all packets that packet contains and increasing progressively successively, to the described equipment of the core network data of switching that increase progressively successively that transmit Sequence Number;
If determining, described target BS receives the new data that described UE sends, when described target BS is switched sequence number corresponding to all packets comprising in the upstream data bag that new data that data send with described UE forms described in judging and had continuous part, the upstream data bag of sequence number continuous part is sent to described equipment of the core network.
3. the method for claim 1, is characterized in that, is that described source base station is not sent to after the downlink data interpolation sequence number of UE according to described AM data retransmission, sends described downlink data packet to described UE, specifically comprises:
Described target BS is according to the serial-number-state information of carrying in described AM data retransmission, determine maximum sequence number in described serial-number-state information, and the described maximum sequence number of determining is increased after default value, be not sent to sequence number corresponding to first packet comprising in the downlink data of UE as described source base station, and described sequence number be added in the data head of described the first packet;
Described target BS is according to sequence number corresponding to described first packet, is followed successively by the data head of other packets except described first packet that comprise in the downlink data that described source base station is not sent to UE and adds corresponding sequence number;
Described target BS is not sent to downlink data and the described AM data retransmission of UE according to the described source base station that adds described serial number data head, generate downlink data packet and be sent to described UE.
4. the method as described in claim 1-3 any one, is characterized in that, if described in to switch data be downlink data, further comprise:
In the time receiving serial-number-state signaling, described target BS is according to the sequence number carrying in described serial-number-state signaling, generates described source base station and be not sent to the data head of the downlink data of UE;
The described source base station that adds described sequence number is not sent to UE by described target BS downlink data and described AM data retransmission are sent to described UE.
5. the method as described in claim 1-3 any one, is characterized in that, further comprises:
In the time receiving equipment of the core network and send to the descending new data of target BS, if determining, described target BS do not receive serial-number-state signaling corresponding to described descending new data that described source base station sends, in the time judging that described descending new data need not be encrypted, according to the AM data retransmission carrying in descending new data, for described descending new data adds sequence number;
Described target BS, by adding described descending new data and the described AM data retransmission of sequence number, is sent to described UE.
6. a data sending device, is applied in wireless communication system, it is characterized in that, described device comprises:
Receiving element, for the data of switching of reception sources base station transmission; Wherein, described in, switch data and comprise that affirmation mode AM data retransmission and source base station are not sent to the discontinuous upstream data receiving to downlink data and the packet data polymerized agreement PDCP layer of user equipment (UE);
Upstream data transmitting element, for when described in switch data while being upstream data, if determine, UE access is local, and switch serial-number-state signaling corresponding to data described in not receiving that described source base station sends, need not encrypt when switching data described in judgement, and described in switch sequence number corresponding to data and meet when pre-conditioned, described in sending to equipment of the core network, switch data;
Downlink data transmitting element, for when described in switch data while being downlink data, if determine, UE access is local, and switch serial-number-state signaling corresponding to data described in not receiving that described source base station sends, described in judging, switch data need not encrypt time, be that described source base station is not sent to after the downlink data interpolation sequence number of UE according to described AM data retransmission, the downlink data that described source base station based on described AM data retransmission and interpolation sequence number is not sent to UE generates downlink data packet, and sends described downlink data packet to described UE.
7. device as claimed in claim 6, is characterized in that, described upstream data transmitting element, specifically for:
Receive first new data packets that described UE sends if determine, judged before described first new data packets arrives, local preserve described in when switching sequence number corresponding to all packets that packet contains and increasing progressively successively, to the described equipment of the core network data of switching that increase progressively successively that transmit Sequence Number; Receive the new data that described UE sends if determine, when switching sequence number corresponding to all packets comprising in the upstream data bag that new data that data send with described UE forms described in judging and having continuous part, the upstream data bag of sequence number continuous part is sent to described equipment of the core network.
8. device as claimed in claim 6, is characterized in that, described downlink data transmitting element, specifically for:
According to the serial-number-state information of carrying in described AM data retransmission, determine maximum sequence number in described serial-number-state information, and the described maximum sequence number of determining is increased after default value, be not sent to sequence number corresponding to first packet comprising in the downlink data of UE as described source base station, and described sequence number be added in the data head of described the first packet; According to sequence number corresponding to described first packet, be followed successively by the data head of other packets except described first packet that comprise in the downlink data that described source base station is not sent to UE and add corresponding sequence number; Be not sent to downlink data and the described AM data retransmission of UE according to the described source base station that adds described serial number data head, generate downlink data packet and be sent to described UE.
9. the method as described in claim 6-8 any one, is characterized in that, described downlink data transmitting element, also for:
If described in to switch data be downlink data, in the time receiving serial-number-state signaling, described target BS is according to the sequence number carrying in described serial-number-state signaling, generates described source base station and be not sent to the data head of the downlink data of UE; The data and the described AM data retransmission that add described sequence number are sent to described UE.
10. the method as described in claim 6-8 any one, is characterized in that, described downlink data transmitting element, also for:
In the time receiving equipment of the core network and send to the descending new data of target BS, do not receive serial-number-state signaling corresponding to described descending new data that described source base station sends if determine, in the time judging that described descending new data need not be encrypted, according to the AM data retransmission carrying in descending new data, for described descending new data adds sequence number; By adding described descending new data and the described AM data retransmission of sequence number, be sent to described UE.
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Address after: 510663 No. 10 Shenzhou Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee after: Jingxin Network System Co.,Ltd. Address before: 510663 No. 10 Shenzhou Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee before: Comba Telecom System (China) Ltd. |