CN102970710B - A kind of data transmission method and base station - Google Patents
A kind of data transmission method and base station Download PDFInfo
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- CN102970710B CN102970710B CN201210398772.6A CN201210398772A CN102970710B CN 102970710 B CN102970710 B CN 102970710B CN 201210398772 A CN201210398772 A CN 201210398772A CN 102970710 B CN102970710 B CN 102970710B
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Abstract
Embodiments provide data transmission method and base station, the data that terminal sends can be converted to IP Packet Generation to network, and the IP packet that network sends is forwarded, achieve when not by equipment of the core network, base station is to the direct communication of terminal and inter-network data, thus make the equipment of the core network can avoiding using high cost during networking on a small scale, therefore, it is possible to greatly lower the cost of networking on a small scale.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of data transmission method and base station.
Background technology
At present, LTE(LongTermEvolution) network architecture comprises: access network equipment (eNB) and equipment of the core network (EPC), when terminal needs to carry out data communication with IP network, must be connected with equipment of the core network via access network equipment, final and IP network could carry out data communication.When large-scale network-estabilishing, above-mentioned network architecture is conducive to carrying out centralized management to equipment and network, although the cost of equipment of the core network is higher, under the condition of many base station networkings, the proportion shared by the cost of equipment of the core network is not high.
Along with popularizing of LTE technology, LTE technology also can be applied to industry dedicated network, compared with public network, the feature of industry dedicated network is that small scale, base station are few, thus, if dispose equipment of the core network equally in industry dedicated network, then the cost of small-sized networking is easily caused greatly to increase.
Summary of the invention
In view of this, embodiments provide a kind of data transmission method and base station, object is to solve the problem of high cost when existing LTE network framework causes networking on a small scale.
To achieve these goals, following technical characteristic is embodiments provided:
A kind of data transmission method, is applied to base station, comprises:
Up aspect, the IP packet that the terminal received sends, and by described IP Packet Generation;
Descending aspect, receives the IP packet of network transmission and forwards.
Preferably, described described IP Packet Generation to be comprised:
Obtain the object IP address of described IP packet;
By the receiving terminal that described IP Packet Generation indicates to described object IP address.
Preferably, described the receiving terminal that described IP Packet Generation indicates to described destination address to be comprised:
When described IP packet meets default first condition, from terminal mapping table, search the terminal iidentification corresponding with the object IP address of described IP packet;
By the terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described object IP address;
When there is not the terminal iidentification corresponding with described object IP address in described terminal mapping table, by described IP Packet Generation to network.
Preferably, described method also comprises:
When described IP packet does not meet the first condition preset, generate the respond packet corresponding with described IP packet;
Respond packet corresponding for described and described IP packet is sent to network or terminal.
Preferably, described default first condition comprises:
Described IP packet be not DynamicHost arrange agreement IP packet and,
The object IP address of described IP packet is not the IP address of current base station; Further,
The object IP address of described IP packet is not broadcast IP; Further,
The object IP address of described IP packet is not multicast IP.
Preferably, described reception network sends IP packet and forwards and comprises:
Receive the IP packet that described network sends;
Obtain the object IP address of described IP packet;
By the receiving terminal that described IP Packet Generation indicates to described object IP address.
Preferably, described the receiving terminal that described IP Packet Generation indicates to described destination address to be comprised:
When described IP packet meets default second condition, from terminal mapping table, search the terminal iidentification corresponding with described destination address;
By the terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described object IP address.
Preferably, described terminal mapping table comprises:
To be set up by described base station and to safeguard, there is the IP address of terminal, the state of terminal, the mark of terminal, the mapping table of inside of base station mark.
Preferably, before search the terminal iidentification corresponding with described destination address from terminal mapping table, also comprise:
Judge that whether described object IP address is the IP address of current base station;
If so, when described IP packet is the tunnel IP packet of X2 interface, the X2 interface packet header of described IP packet is removed.
Preferably, described method also comprises:
When described IP packet does not meet the second condition preset, generate the respond packet with described IP packet;
Described respond packet is sent to network or terminal.
Preferably, described default second condition comprises:
The target MAC (Media Access Control) address of described IP packet is not broadcast address; Further,
The target MAC (Media Access Control) address of described IP packet is not multicast address; Further,
Described IP packet is not the IP packet that DynamicHost arranges agreement.
Preferably, when described terminal is in the coverage of current base station, described the terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described object IP address to be comprised:
If described terminal does not exist, then abandon described packet;
If described terminal exists, then described IP packet is mapped on radio bearer by the header packet information according to described IP packet;
By described radio bearer, by described IP Packet Generation to described terminal.
Preferably, when described terminal is not in the coverage of current base station, described the terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described destination address to be comprised:
According to the IP tunneling protocol preset, described IP packet is encapsulated, and revises the header of described IP packet;
According to amended header, by network by the base station of described IP Packet Generation to described terminal place;
By the base station at described terminal place, give described terminal by described IP Packet Generation.
Preferably, before the described data by the terminal received transmission are converted to IP packet or receive the IP packet of network transmission, also comprise:
Mutual with the aaa server in described network, to complete networking, certification, authentication and the encrypted initialization of described terminal.
Preferably, described method also comprises:
When described terminal switch being detected to other base station, after the data be associated are carried out IP tunnel encapsulation, be sent to the base station at the current place of described terminal with described terminal;
When detecting that described terminal is switched to current base station by other base station, the IP tunnel bag of the described terminal that process network sends, and send to described terminal.
Preferably, described method also comprises:
When terminal is linked into described base station, for accessing the terminal distribution IP address of current base station.
Preferably, described method also comprises:
Realize IDLE pattern and the paging function of LTE terminal.
A kind of base station, comprising:
IP packet modular converter, is converted to IP packet for the data terminal received sent;
Mixed-media network modules mixed-media, for by conversion after IP Packet Generation; And, receive the IP packet of network transmission and forward.
Preferably, described mixed-media network modules mixed-media comprises:
Data Layer, for up aspect, obtains the IP packet rs destination IP address of described wireless module conversion, by the receiving terminal that described IP Packet Generation indicates to described object IP address; Descending aspect, receives the IP packet that described network sends, obtains the destination address of described IP packet; By the receiving terminal that described IP Packet Generation indicates to described destination address.
Preferably, described data Layer comprises:
First retransmission unit, when meeting default first condition or second condition for described IP packet, the terminal iidentification corresponding with the object IP address of described IP packet is searched from terminal mapping table, and by terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described object IP address;
Second retransmission unit, for when there is not the terminal iidentification corresponding with described object IP address in described mapping table, by described IP Packet Generation to network.
Preferably, described first retransmission unit comprises:
Local forwarding subelement, for when described terminal is in the coverage of current base station, if described terminal does not exist, then abandons described packet; If described terminal exists, then described IP packet is mapped on radio bearer by the header packet information according to described IP packet; By described radio bearer, by described IP Packet Generation to described terminal;
Forwarded subelement, for when described terminal is not in the coverage of current base station, according to the IP tunneling protocol preset, described IP packet is carried out IP tunnel encapsulation, and revise the header of described IP packet, according to amended header, by network by the base station of described IP Packet Generation to described terminal place, and by the base station at described terminal place, give described terminal by described IP Packet Generation.
Preferably, described data Layer also comprises:
3rd retransmission unit, for when described IP packet does not meet the first condition or default second condition preset, generates the respond packet corresponding with described IP packet, respond packet corresponding for described and described IP packet is sent to network or terminal.
Preferably, described data Layer also comprises:
Packet header amendment unit, for the first retransmission unit before search the terminal iidentification corresponding with described destination address from the mapping table preset, judge that whether described object IP address is the IP address of current base station, if, when described IP packet is the tunnel IP packet of X2 interface, remove the X2 interface packet header of described IP packet.
Preferably, described base station also comprises:
Non-Access Stratum signaling function module, for completing the process of terminal Non-Access Stratum signaling message, has worked in coordination with the networking of described terminal, certification, authentication and encrypted initialization; And,
Complete network attachment and the attachment removal of terminal;
Initiate data transfer request message, triggered radio bearer and set up, release and amendment.
Preferably, described base station also comprises:
Handover module, for when described terminal switch being detected to other base station, is sent to the base station at the current place of described terminal with described terminal after the data be associated are carried out IP tunnel encapsulation;
When detecting that described terminal is switched to current base station by other base station, the IP tunnel bag of the described terminal that process network sends, and send to described terminal.
Preferably, described base station also comprises:
Inner DHCP module, for the terminal distribution IP address for accessing current base station.
Preferably, described base station also comprises:
Paging module, for revising the protocol interface that network is surveyed, be supported in IDLE and the paging function of the whole network, a base station is as a paging group.
Preferably, described base station also comprises:
Network function Routing Protocol Module, supports ospf Routing Protocol or routing information protocol Routing Protocol, to complete the routing function of described base station for realizing;
IP-based Ethernet transport module, for realizing the transfer function based on Ethernet, to complete base station based on EOIP bis-layers of bridging functionality.The data transmission method that the embodiment of the present invention provides and base station, the data that terminal sends can be converted to IP Packet Generation to network, and the IP packet that network sends is forwarded, achieve when not by equipment of the core network, base station is to the direct communication of terminal and inter-network data, thus make the equipment of the core network can avoiding using high cost during networking on a small scale, therefore, it is possible to greatly lower the cost of networking on a small scale.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of communication network topology structure chart disclosed in the embodiment of the present invention;
The flow chart of Fig. 2 a kind of data transmission method disclosed in the embodiment of the present invention;
Fig. 3 is the flow chart of example of the present invention another data transmission method disclosed;
In Fig. 4 a kind of data transmission method disclosed in the embodiment of the present invention, base station and aaa server carry out the schematic diagram communicated;
It is the schematic diagram of terminal distribution IP address in Fig. 5 a kind of data transmission method disclosed in the embodiment of the present invention;
The structural representation of Fig. 6 a kind of base station disclosed in the embodiment of the present invention;
Fig. 7 is the structural representation of the embodiment of the present invention another base station disclosed.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Disclosed in the embodiment of the present invention, a kind of data transmission method, is applied to base station, comprising:
The data that the terminal received sends are converted to IP packet by up aspect, and by described IP Packet Generation;
Descending aspect, receives the IP packet of network transmission and forwards.
As shown in Figure 1, the data transmission method described in the present embodiment, is directly linked into network by base station as the access device of network, realizes terminal and network carries out data communication.Terminal in the present embodiment comprises the terminal meeting LTE protocol in 3GPP.
Existing LTE terminal and network carry out in the method for data communication, base station is only as the access device of terminal and LTE core network network, terminal will communicate with IP network, base station must be connected with one or more equipment of the core network, communicated with equipment of the core network by S1 interface, forward terminal and internetwork communication data by equipment of the core network.
Data transmission method described in the present embodiment, compared with the method for carrying out data communication with existing terminal and network, difference is, the data that terminal sends are converted to IP packet and directly send to network by base station, and, the IP packet that network sends directly is forwarded, and no longer by equipment of the core network exchange termination and internetwork communication data.Therefore, the method described in the present embodiment, no longer needs equipment of the core network, for small-scale networking, greatly can reduce networking cost, and, do not carry out terminal and internetwork exchanges data by equipment of the core network, the time delay of transfer of data can also be reduced.
The embodiment of the present invention another data transmission method disclosed, is applied to base station, in up, as shown in Figure 2, comprises:
S201: the packet that the terminal received sends is converted to IP packet;
S202: the object IP address obtaining described IP packet;
Behind the object IP address obtaining IP packet, the receiving terminal that IP Packet Generation indicates to destination address by described base station, specifically comprises:
S203: judge whether described IP packet meets the first condition preset, if so, perform S204, if not, perform S207;
Wherein, the first condition preset comprises: described IP packet is not the IP bag that DynamicHost arranges agreement (DHCP agreement); Further, the object IP address of described IP packet is not current base station IP address; Further, the object IP address of described IP packet is not broadcast IP; Further, the object IP address of described IP packet is not multicast IP.
S204: search the terminal iidentification corresponding with described object IP address from terminal IP mapping table, if can find, then perform S205, if can not, perform S206;
When base station access by terminal, inside of base station can set up mapping table entry for terminal, and terminal mapping table refers to the IP address of the base station maintenance mapping table corresponding with terminal.When base station access by terminal, base station is set up and maintenance terminal IP and inside of base station uniquely identified mapping table, an entry is there is in each terminal in table, realizing under handoff functionality realization based on SIMPLEIP, the essential information comprised in entry has terminal IP, SOT state of termination mark, the RelatedBS of terminal, the uniqueness of terminal indicates.When terminal access, go offline, in the situations such as switching, his-and-hers watches carry out the operations such as additions and deletions change.Wherein:
Terminal IP: for recording the IP address of terminal for IP transfer of data.
SOT state of termination: refer in the network supporting to switch, terminal is at access base station and after obtaining IP, the state of existence, SOT state of termination can comprise three kinds, is respectively: local: local access, leaver: switch and leave, visit: switch and enter.
RelatedBS: for recording the initial access base station of the terminal being in visit state.
The sign of terminal: refer to that the whole network uniqueness of terminal indicates, come from terminal.
Inside of base station identifies: refer to that terminal represents in the uniqueness of inside of base station, by base station assigns, only use at inside of base station.
S205: the terminal that described IP Packet Generation is indicated to the terminal iidentification corresponding with described object IP address;
It should be noted that, when described terminal is likely in the coverage of current base station, also likely left the coverage of current base station, be switched to the coverage of adjacent base station, therefore, further, S205 specifically comprises:
S2051: judge described terminal whether in the scope of current base station, if so, performs S2052, if not, performs S2056;
S2052: judge whether described terminal exists, if described terminal does not exist, then perform S2053, if described terminal exists, then performs S2054;
S2053: abandon described packet;
S2054: described IP packet is mapped on radio bearer by the header packet information according to described IP packet;
S2055: by described radio bearer, by described IP Packet Generation to described terminal;
S2056: according to the agreement preset, described IP packet is encapsulated, and revises the header of described IP packet;
In the present embodiment, the agreement preset refers to the agreement of carrying out data communication between base station and base station, such as, uses X2 interface tunnel protocol to encapsulate described IP packet.
S2057: according to amended header, by network by the base station of described IP Packet Generation to described terminal place;
S2058: by the base station at described terminal place, gives described terminal by described IP Packet Generation.
As can be seen from said process, the data communication of base station and terminal room is undertaken by radio bearer, and the data communication between base station and base station needs to be undertaken by network.
S206: when there is not the terminal iidentification corresponding with described object IP address in described mapping table, by described IP Packet Generation to network;
S207: generate the respond packet corresponding with described IP packet;
S208: respond packet corresponding for described and described IP packet is sent to network or terminal.
It should be noted that, S207 and S208 is the preferred embodiment of the present invention, in addition, if the object IP address of described IP packet does not meet the first condition preset, according to the processing mode preset, described IP packet can also be processed, such as, the transmission etc. of described IP packet will be stopped.
Data transmission method described in the present embodiment, in the up process of transfer of data, base station connects terminal and network, and data terminal sent, according to IP destination address, are sent to the terminal of this base station coverage or the terminal of adjacent base station covering, or in network.Due to base station upstream data is converted to IP packet after directly send to network, thus no longer need to use equipment of the core network, and for the process of transfer of data, also no longer need to carry out the conversion that RB radio bearer carries to S1, therefore, the flow process of transfer of data is simplified.
The embodiment of the present invention another data transmission method disclosed, is applied to base station, in descending, as shown in Figure 3, comprises:
S301: receive the IP packet that network sends;
S302: the destination address obtaining described IP packet;
S303: judge whether described IP packet meets the second condition preset, if meet the second condition preset, perform S304, if do not meet the second condition preset, perform S307;
Described default second condition comprises: the target MAC (Media Access Control) address of described IP packet is not broadcast address; Further, the target MAC (Media Access Control) address of described IP packet is not multicast address; Further, described IP packet is not the IP packet of DHCP agreement.
S304: judge that whether described object IP address is the IP address of current base station, if so, illustrate that described IP packet may be that other base station is forwarded to current base station by X2 interface tunnel, then perform S305, if object IP address is not the IP address of current base station, then perform S306;
S305: when described IP packet is the tunnel IP packet of X2 interface, remove the X2 interface packet header of described IP packet;
S306: search the terminal iidentification corresponding with described destination address from the mapping table preset, and by terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described destination address;
With above-described embodiment analogously, the terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described destination address is comprised further:
S3061: judge described terminal whether in the coverage of current base station, if so, performs S3062, if not, performs S3066;
S3062: judge whether described terminal exists, if described terminal does not exist, then perform S3063, if described terminal exists, then performs S3064;
S3063: abandon described packet;
S3064: described IP packet is mapped on radio bearer by the header packet information according to described IP packet;
S3065: by described radio bearer, by described IP Packet Generation to described terminal;
S3066: according to the agreement preset, described IP packet is encapsulated, and revises the header of described IP packet;
S3067: according to amended header, by network by the base station of described IP Packet Generation to described terminal place;
S3068: by the base station at described terminal place, gives described terminal by described IP Packet Generation.
S307: generate the respond packet with described IP packet;
S308: described respond packet is sent to network or terminal.
In addition, if the object IP address of described IP packet does not meet the second condition preset, according to the processing mode preset, described IP packet can also be processed, such as, will the transmission etc. of described IP packet be stopped.
Data transmission method described in the present embodiment, in descending, base station is when receiving the IP packet that network sends, according to the difference of object IP address, respectively by IP Packet Generation to the terminal in self coverage, or be again sent to the terminal being switched to adjacent base station by network, and again through the forwarding of equipment of the core network, need not can reduce the time delay of transfer of data.
In above-mentioned two embodiments, discuss the process of base-station transmission data respectively from up-downgoing aspect in detail, further, no matter be up or descending, complete outside data communication, above-described embodiment can further include:
1, the certification of described terminal is completed, authentication ciphering initialization, charging etc.;
Support the certification of LTE standard terminal, mandate and billing function need the aaa authentication server of described base station external IP network to participate in.LTE standard terminal directly communicates with described base station and follows standard air protocol, and described base station is communicated with aaa server and can be completed by radius or diameter agreement.If terminal does not need certification and encryption function, so aaa authentication server not necessarily.Further, described base station can realize the function of the even whole aaa server of part.
Base station and aaa server carry out the schematic diagram that communicates as shown in Figure 4.
2, terminal switching is between the base stations completed.
Due to without equipment of the core network, the mechanism therefore switched needs the design done again.In order to keep the continuity of IP operation when switching, suggestion is chosen and is adopted MobileIP(Mobile IP) principle or SimpleIP(simple IP) one of principle realize the handover mechanism of terminal IP operation layer, or other method outside these two kinds of mechanism realizes.When mainly requiring ensure to switch between described base station, terminal traffic does not break, and still preserves communication.
Adopt and realize terminal based on the principle of SimpleIP and do not interrupt across operation layer when switching between base station, the signaling message on X2 interface needs adjustment in detail, is used for the information of between described base station transmission terminal.Described base station needs three kinds of states of maintenance terminal at newly-increased mixed-media network modules mixed-media (according to realizing there is difference), is that local(is local respectively), visit(accesses), leave(leaves).When terminal is linked into described base station, state is local, and this base station is exactly the HomeBS(anchor base station of terminal).When terminal switch is to described in other during base station, on HomeBS base station, SOT state of termination is leave.On new described base station, the state of terminal is visit.During handover success, the IP address of terminal does not change, but during handoff failure, the IP address of terminal can change.Terminal completes switching and (is switched to non-HomeBS from HomeBS, or be switched to another non-HomeBS from non-HomeBS, or be switched to HomeBS from non-HomeBS) after, if current described base station is not HomeBS base station, the data being sent to IP network reverse from terminal are directly forwarded to IP network from BS, the first HomeBS base station on earth of data from IP network to terminal, the user face tunnel protocol then through X2 interface is forwarded to current target BS base station.
3, be the LTE terminal distributing IP address of the current described base station of access.
IP is distributed by base stations being in charge address, or is completed by other Dynamic Host Configuration Protocol server of the IP network inside outside base station, or uses static address to distribute.If select to be distributed by base stations being in charge, can select in attach(network attachment) directly carry in process or by base station in the Dynamic Host Configuration Protocol server module that arranges realize.If select to be completed by other Dynamic Host Configuration Protocol server of the IP network inside outside base station, router provides the function of Dynamic Host Configuration Protocol server in an ip network usually.Now inside of base station will arrange DHCPrelay(DHCP relaying) module.The IP address of BTS service mouth can static configuration, also can be distributed by the Dynamic Host Configuration Protocol server of IP network.The IP address, functional area of base station can with the IP address of terminal at a network segment, also can not at a network segment (depend on the implementation pattern bridge mode of base station, or route pattern).It is in the IP network of Dynamic Host Configuration Protocol server outside base station that Fig. 5 provides, terminal below base station obtains IP address by dhcp message from Dynamic Host Configuration Protocol server, the IP address, functional area of base station A and terminal are below on a network segment, and the IP address of the terminal below the B of base station and the functional area IP of base station B be not on a network segment.
4, IDLE pattern and the paging function of LTE terminal is realized
The IDLE pattern of described base station support terminal and paging function.A BS is exactly a paging group (tracking fields).After terminal enters IDLE pattern, BS needs the information of preserving terminal, and this base station is designated as HomeBS.If after terminal roaming to other base station, need to carry out location update operations in other BS base station.While location update operations, BS base station will by X2 interface and HomeBS base station intercorrelation information.Simultaneously when external network needs and terminal communication, data are first sent on BS base station, and then data are forwarded to current BS by tunnel and carry out buffer memory and trigger BS paging present terminal.When terminal exits from IDLE pattern, terminal can very fast access base station.HomeBS is updated to current BS base station.
The embodiment of the invention discloses a kind of base station, as shown in Figure 6, comprising:
IP packet modular converter 601, is converted to IP packet for the data terminal received sent;
In the present embodiment, IP packet modular converter can be arranged in the module with radio open access function, described in there is the air protocol that radio open access function module may be used for based on standard LTE.
Mixed-media network modules mixed-media 602, for by conversion after IP Packet Generation; And, receive the IP packet of network transmission and forward.Described mixed-media network modules mixed-media, as IP network access device, except completing and processing the data coming self terminal or network and forward, actually to use, can also realize Routing Protocol, the functions such as DHCP.
Two modules that base station described in the present embodiment comprises; possesses the most basic function realizing forwarding IP data; in practical application; base station can also retain original radio access module; the present embodiment does not limit the module of described base station; other can realize the base station of base station functions in the present embodiment; even if the name of it modules comprised is different or also have other function; or; even if the function similar from base station in the present embodiment realizes, also within protection scope of the present invention in different modules.
When described in the present embodiment, base station connection LTE terminal and network carry out data communication, the data that the LTE terminal received sends are converted to IP packet and send, descending aspect by up aspect, receive the IP packet of network transmission and forward, and no longer being communicated with network by equipment of the core network.
It should be noted that, base station described in the present embodiment, on the basis possessing forwarding capability, original access function also can retain simultaneously, the function making base station have access simultaneously and forward, and comprises in the communication network of described base station and no longer needs to use equipment of the core network, when special small network organizing, greatly can reduce costs, meanwhile, reduce the time delay of transfer of data.
The embodiment of the present invention another base station disclosed, as shown in Figure 7, comprising:
IP packet modular converter 701, is converted to IP packet for the data terminal received sent;
Data Layer 702, for up aspect, obtains the IP packet rs destination IP address of described wireless module conversion, by the receiving terminal that described IP Packet Generation indicates to described object IP address; Descending aspect, receives the IP packet that described network sends, obtains the destination address of described IP packet; By the receiving terminal that described IP Packet Generation indicates to described destination address.
Particularly, described data Layer 702 comprises:
First retransmission unit 7021, when object IP address for described IP packet meets default first condition or second condition, the terminal iidentification corresponding with described object IP address is searched from the mapping table preset, and by terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described object IP address;
Second retransmission unit 7022, for when there is not the terminal iidentification corresponding with described object IP address in described mapping table, by described IP Packet Generation to network.
3rd retransmission unit 7023, for when the object IP address of described IP packet does not meet the first condition or default second condition preset, generate the respond packet corresponding with described IP packet, respond packet corresponding for described and described IP packet is sent to network or terminal.
Packet header amendment unit 7024, for the first retransmission unit before search the terminal iidentification corresponding with described destination address from the mapping table preset, judge that whether described object IP address is the IP address of current base station, if, when described IP packet is the tunnel IP packet of X2 interface, remove the X2 interface packet header of described IP packet.
Wherein, the 3rd retransmission unit and packet header amendment unit are that preferably the present embodiment does not limit.
Further, the first retransmission unit described in the present embodiment can be subdivided into:
Local forwarding subelement, for when described terminal is in the coverage of current base station, if described terminal does not exist, then abandons described packet; If described terminal exists, then described IP packet is mapped on radio bearer by the header packet information according to described IP packet; By described radio bearer, by described IP Packet Generation to described terminal;
Forwarded subelement, for when described terminal is not in the coverage of current base station, according to the agreement preset, described IP packet is encapsulated, and revise the header of described IP packet, according to amended header, by network by the base station of described IP Packet Generation to described terminal place, and by the base station at described terminal place, give described terminal by described IP Packet Generation.
That is, the first retransmission unit can communicate with terminal, also can communicate with network.
Base station described in the present embodiment, data Layer has the function forwarding IP packet, thus when making described base station and network carry out data communication, no longer needs through equipment of the core network.
Further, the base station described in the present embodiment, can also comprise:
Non-Access Stratum signaling (NAS) functional module, for completing the process of terminal NAS message, has worked in coordination with the networking of described terminal, certification, authentication and encrypted initialization; And, complete network attachment (attach) and the attachment removal (deattach) of terminal;
Initiate data transfer request message, triggered radio bearer and set up, release and amendment
Handover module, for when described terminal switch being detected to other base station, is sent to the base station at the current place of described terminal with described terminal after the data be associated are carried out IP tunnel encapsulation;
When detecting that described terminal is switched to current base station by other base station, the IP tunnel bag of the described terminal that process network sends, and send to described terminal.
Inner DHCP module, for the terminal distribution IP address for accessing current base station.
Paging module, for revising the protocol interface that network is surveyed, be supported in IDLE and the paging function of the whole network, a base station is as a paging group.
And,
Network function Routing Protocol Module, supports ospf Routing Protocol (OSPF) or routing information protocol Routing Protocol, to complete the routing function of described base station for realizing;
IP-based Ethernet transmission (EOIP) module, for realizing Ethernet overIP function, to complete base station based on EOIP bis-layers of bridging functionality.
If the function described in the present embodiment method using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computing equipment read/write memory medium.Based on such understanding, the part of the part that the embodiment of the present invention contributes to prior art or this technical scheme can embody with the form of software product, this software product is stored in a storage medium, comprising some instructions in order to make a computing equipment (can be personal computer, server, mobile computing device or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (23)
1. a data transmission method, is characterized in that, is applied to base station, and described base station can complete the switching of terminal between described base station, thus when ensureing that described terminal switches between described base station, the business of terminal does not break, and the method specifically comprises:
Up aspect, receives the data that described terminal sends, described data is converted to IP packet, and by described IP Packet Generation;
Descending aspect, receives the IP packet of network transmission and forwards;
Wherein, described described IP Packet Generation to be comprised:
Obtain the object IP address of described IP packet;
By the receiving terminal that described IP Packet Generation indicates to described object IP address;
Wherein, described the receiving terminal that described IP Packet Generation indicates to described destination address to be comprised:
When described IP packet meets default first condition, from terminal mapping table, search the terminal iidentification corresponding with the object IP address of described IP packet;
By the terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described object IP address;
When there is not the terminal iidentification corresponding with described object IP address in described terminal mapping table, by described IP Packet Generation to network;
Wherein, described default first condition comprises:
Described IP packet be not DynamicHost arrange agreement IP packet and,
The object IP address of described IP packet is not the IP address of current base station; Further,
The object IP address of described IP packet is not broadcast IP; Further,
The object IP address of described IP packet is not multicast IP.
2. method according to claim 1, is characterized in that, also comprises:
When described IP packet does not meet the first condition preset, generate the respond packet corresponding with described IP packet;
Respond packet corresponding for described and described IP packet is sent to network or terminal.
3. method according to claim 1, is characterized in that, described reception network sends IP packet and forwards and comprises:
Receive the IP packet that described network sends;
Obtain the object IP address of described IP packet;
By the receiving terminal that described IP Packet Generation indicates to described object IP address.
4. method according to claim 3, is characterized in that, is describedly comprised by the receiving terminal that described IP Packet Generation indicates to described destination address:
When described IP packet meets default second condition, from terminal mapping table, search the terminal iidentification corresponding with described destination address;
By the terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described object IP address.
5. the method according to claim 1 or 4, is characterized in that, described terminal mapping table comprises:
To be set up by described base station and to safeguard, there is the IP address of terminal, the state of terminal, the mark of terminal, the mapping table of inside of base station mark.
6. method according to claim 4, is characterized in that, before search the terminal iidentification corresponding with described destination address from terminal mapping table, also comprises:
Judge that whether described object IP address is the IP address of current base station;
If so, when described IP packet is the tunnel IP packet of X2 interface, the X2 interface packet header of described IP packet is removed.
7. method according to claim 4, is characterized in that, also comprises:
When described IP packet does not meet the second condition preset, generate the respond packet with described IP packet;
Described respond packet is sent to network or terminal.
8. the method according to claim 4 or 7, is characterized in that, described default second condition comprises:
The target MAC (Media Access Control) address of described IP packet is not broadcast address; Further,
The target MAC (Media Access Control) address of described IP packet is not multicast address; Further,
Described IP packet is not the IP packet that DynamicHost arranges agreement.
9. the method according to claim 1 or 4, is characterized in that, when described terminal is in the coverage of current base station, describedly the terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described object IP address to be comprised:
If described terminal does not exist, then abandon described packet;
If described terminal exists, then described IP packet is mapped on radio bearer by the header packet information according to described IP packet;
By described radio bearer, by described IP Packet Generation to described terminal.
10. the method according to claim 1 or 4, is characterized in that, when described terminal is not in the coverage of current base station, describedly the terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described destination address to be comprised:
According to the IP tunneling protocol preset, described IP packet is encapsulated, and revises the header of described IP packet;
According to amended header, by network by the base station of described IP Packet Generation to described terminal place;
By the base station at described terminal place, give described terminal by described IP Packet Generation.
11. methods according to claim 1, is characterized in that, before the data terminal received sent are converted to IP packet or receive the IP packet of network transmission, also comprise:
Mutual with the aaa server in described network, to complete networking, certification, authentication and the encrypted initialization of described terminal.
12. methods according to claim 1, is characterized in that, also comprise:
When described terminal switch being detected to other base station, after the data be associated are carried out IP tunnel encapsulation, be sent to the base station at the current place of described terminal with described terminal;
When detecting that described terminal is switched to current base station by other base station, the IP tunnel bag of the described terminal that process network sends, and send to described terminal.
13. methods according to claim 1, is characterized in that, also comprise:
When terminal is linked into described base station, for accessing the terminal distribution IP address of current base station.
14. methods according to claim 1, is characterized in that, also comprise:
Realize IDLE pattern and the paging function of LTE terminal.
15. 1 kinds of base stations, is characterized in that, described base station can complete the switching of terminal between described base station, thus when ensureing that described terminal switches between described base station, the business of terminal does not break, and this base station specifically comprises:
IP packet modular converter, is converted to IP packet for the data terminal received sent;
Mixed-media network modules mixed-media, for by conversion after IP Packet Generation; And, receive the IP packet of network transmission and forward;
Wherein, described mixed-media network modules mixed-media comprises:
Data Layer, for up aspect, obtains the IP packet rs destination IP address of wireless module conversion, by the receiving terminal that described IP Packet Generation indicates to described object IP address; Descending aspect, receives the IP packet that described network sends, obtains the destination address of described IP packet; By the receiving terminal that described IP Packet Generation indicates to described destination address;
Wherein, described data Layer comprises:
First retransmission unit, when meeting default first condition or second condition for described IP packet, the terminal iidentification corresponding with the object IP address of described IP packet is searched from terminal mapping table, and by terminal that described IP Packet Generation indicates to the terminal iidentification corresponding with described object IP address;
Second retransmission unit, for when there is not the terminal iidentification corresponding with described object IP address in described mapping table, by described IP Packet Generation to network;
Wherein, described default first condition comprises: described IP packet be not DynamicHost arrange agreement IP packet and, the object IP address of described IP packet is not the IP address of current base station; Further, the object IP address of described IP packet is not broadcast IP; Further, the object IP address of described IP packet is not multicast IP;
Described default second condition comprises: the target MAC (Media Access Control) address of described IP packet is not broadcast address; Further, the target MAC (Media Access Control) address of described IP packet is not multicast address; Further, described IP packet is not the IP packet of DHCP agreement.
16. base stations according to claim 15, is characterized in that, described first retransmission unit comprises:
Local forwarding subelement, for when described terminal is in the coverage of current base station, if described terminal does not exist, then abandons described packet; If described terminal exists, then described IP packet is mapped on radio bearer by the header packet information according to described IP packet; By described radio bearer, by described IP Packet Generation to described terminal;
Forwarded subelement, for when described terminal is not in the coverage of current base station, according to the IP tunneling protocol preset, described IP packet is carried out IP tunnel encapsulation, and revise the header of described IP packet, according to amended header, by network by the base station of described IP Packet Generation to described terminal place, and by the base station at described terminal place, give described terminal by described IP Packet Generation.
17. base stations according to claim 15, is characterized in that, described data Layer also comprises:
3rd retransmission unit, for when described IP packet does not meet the first condition or default second condition preset, generates the respond packet corresponding with described IP packet, respond packet corresponding for described and described IP packet is sent to network or terminal.
18. base stations according to claim 15, is characterized in that, described data Layer also comprises:
Packet header amendment unit, for the first retransmission unit before search the terminal iidentification corresponding with described destination address from the mapping table preset, judge that whether described object IP address is the IP address of current base station, if, when described IP packet is the tunnel IP packet of X2 interface, remove the X2 interface packet header of described IP packet.
19. base stations according to claim 15, is characterized in that, also comprise:
Non-Access Stratum signaling function module, for completing the process of terminal Non-Access Stratum signaling message, has worked in coordination with the networking of described terminal, certification, authentication and encrypted initialization; And,
Complete network attachment and the attachment removal of terminal;
Initiate data transfer request message, triggered radio bearer and set up, release and amendment.
20. base stations according to claim 15, is characterized in that, also comprise:
Handover module, for when described terminal switch being detected to other base station, is sent to the base station at the current place of described terminal with described terminal after the data be associated are carried out IP tunnel encapsulation;
When detecting that described terminal is switched to current base station by other base station, the IP tunnel bag of the described terminal that process network sends, and send to described terminal.
21. base stations according to claim 15, is characterized in that, also comprise:
Inner DHCP module, for the terminal distribution IP address for accessing current base station.
22. base stations according to claim 15, is characterized in that, also comprise:
Paging module, for revising the protocol interface that network is surveyed, be supported in IDLE and the paging function of the whole network, a base station is as a paging group.
23. base stations according to claim 15, is characterized in that, also comprise:
Network function Routing Protocol Module, supports ospf Routing Protocol or routing information protocol Routing Protocol, to complete the routing function of described base station for realizing;
IP-based Ethernet transport module, for realizing the transfer function based on Ethernet, to complete base station based on EOIP bis-layers of bridging functionality.
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| CN104717637B (en) * | 2013-12-17 | 2018-12-04 | 北京信威通信技术股份有限公司 | The processing method and processing device of five-tuple |
| WO2016082079A1 (en) * | 2014-11-24 | 2016-06-02 | 华为技术有限公司 | Communication system, base station and communication method |
| CN106792691A (en) * | 2016-12-26 | 2017-05-31 | 京信通信技术(广州)有限公司 | Mobile communication network-building method and system |
| CN107071828A (en) * | 2017-04-01 | 2017-08-18 | 中国联合网络通信集团有限公司 | Message forwarding method and device |
| CN109219103A (en) * | 2017-06-29 | 2019-01-15 | 普天信息技术有限公司 | A kind of downlink data transmission method and device |
| CN109787900B (en) * | 2017-11-15 | 2022-04-19 | 阿里巴巴集团控股有限公司 | Transmission method, device, equipment and machine readable medium |
| CN109067932B (en) * | 2018-07-24 | 2022-01-25 | 广州贯行电能技术有限公司 | Data transmission method for data acquisition terminal without fixed IP and data server |
| CN113163022B (en) * | 2021-02-24 | 2023-05-23 | 深圳市日海飞信信息系统技术有限公司 | Data transmission method, device, equipment and storage medium oriented to vertical industry |
| CN114630382B (en) * | 2022-03-30 | 2024-04-23 | 阿里巴巴（中国）有限公司 | Data processing method and system based on wireless network |
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| KR100651469B1 (en) * | 2005-10-07 | 2006-11-29 | 삼성전자주식회사 | Method capable of improving data transmission ratio using ack piggy-backing of tcp in the asymmetric wireless network environment and a terminal and system thereof |
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