CN103107867A - Data transmission method, data transmission device and data transmission system - Google Patents
Data transmission method, data transmission device and data transmission system Download PDFInfo
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- CN103107867A CN103107867A CN201110360993XA CN201110360993A CN103107867A CN 103107867 A CN103107867 A CN 103107867A CN 201110360993X A CN201110360993X A CN 201110360993XA CN 201110360993 A CN201110360993 A CN 201110360993A CN 103107867 A CN103107867 A CN 103107867A
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Abstract
The invention discloses a data transmission method, a data transmission device and a data transmission system. The method includes that a network side device configures a pointed radio network temporary identity (RNTI) for a terminal, wherein the pointed RNTI comprises a public RNTI for data transmission between the terminal and an opposite terminal; the network side device combines data which are sent to the terminal and the opposite terminal, and the combined data are disturbed by the public RNTI; and the disturbed data are sent to the terminal and the opposite terminal through the network side device. Through the data transmission method, the problem that when a new transmission scheme is adopted to carry out data transmission in a correlation technique, the terminal cannot accurately finish data interaction is solved, efficiency of the data transmission is ensured, and reliability of the data transmission is improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of data transmission method, Apparatus and system.
Background technology
Senior long evolving system (Long Term Evolution Advanced, referred to as LTE-A) in two subscriber equipment (User Equipment, referred to as UE) between complete bidirectional data interaction communication process generally comprise 4 stages, namely the 1st stage was that UE1 sends data data1 to Node B (the evolved Node B of evolution, referred to as eNode-B or eNB), the 2nd stage was that eNode-B sends data data1 to UE2, the 3rd stage was that UE2 sends data data2 to eNode-B, and the 4th stage was that eNode-B sends data data2 to UE1.Through these 4 stages, UE1 and UE2 have completed the communication process of 1 bidirectional data interaction.More specifically, eNode-B need to send the grant authorization message to terminal (for example UE), comprise downstream grants information (Downlink grant, referred to as DL grant) and uplink authorization information (Uplink grant, referred to as UL grant), wherein DLgrant is used to indicate the information such as the shared concrete resource location of downlink data, modulation system, and ULgrant is used to indicate the information such as the shared concrete resource location of upstream data, modulation system.that is to say, the grant authorization message is a kind of control information, also need the CRC check through routine, chnnel coding, modulation, the processing such as mapping, wherein the CRC check position of 16bits need to be through Radio Network Temporary Identifier (the Radio Network Temporary Identifier of terminal 16bits, being called for short RNTI) (scrambling is processed and is referred to by bit XOR by turn in scrambling, generally, control information, data message all needs to carry out scrambling, and control information, data message will be carried on concrete physical channel, so also referred to as the control channel scrambling, the data channel scrambling), whether terminal is identified this grant authorization message according to own corresponding RNTI descrambling one's own, terminal is according to the own grant authorization message correct data of demodulation transmitting terminal transmission just.
Introduce via node (Relay Node in the LTE-A system, referred to as RN) increased afterwards new link, the corresponding term of schematic diagram of LTE-A system configuration that shown in Figure 1 is comprises: the link between eNode-B and RN is called the link that the link between backhaul link (back haul link or repeated link), RN and UE is called between access link (access link), eNode-B and UE and is called direct link (link direct transfers).If carry out bidirectional data interaction 1 time between eNode-B and R-UE (UE in the RN coverage), as a same reason, comprise 4 stages, namely the 1st stage was that eNode-B sends data data1 to RN, the 2nd stage was that RN sends data data1 to R-UE, the 3rd stage was that R-UE sends data data2 to RN, and the 4th stage was that RN sends data data2 to eNode-B.
More generally, if complete the bidirectional data interaction between UE1 and UE2 1 time by UE3, as a same reason, comprise 4 stages, namely the 1st stage was that UE1 sends data data1 to UE3, the 2nd stage was that UE3 sends data data1 to UE2, and the 3rd stage was that UE2 sends data data2 to UE3, and the 4th stage was that UE3 sends data data2 to UE1.Through these 4 stages, UE1 and UE2 have completed the communication process of 1 bidirectional data interaction.
It can be seen from the above, and 1 secondary data reciprocal process needs 4 stages, and time resource efficient is lower, and industry also proposes new launch scenario and makes up this shortcoming at present.Main thought is to reduce several stage of communication by introducing network code (Network Coding is referred to as NC).For example, coding bi-directional relaying (Coded Bi-directional Relaying is referred to as CBDR) comprises 3 stages, and namely the 1st stage was that eNode-B sends data data1 to RN, the 2nd stage was that R-UE sends data data2 to RN, and the 3rd stage was that RN sends data data3=data1
Data2 ("
" the expression XOR) to eNode-B and R-UE.Again for example, subcarrier divides duplex (Subcarrier Frequency Division Duplex, referred to as SDD) comprise 2 stages, namely the 1st stage was that eNode-B and R-UE take respectively different subcarriers and send respectively data data1 and data2 to RN, the 2nd stage was that RN takies different subcarrier and sends data data2 and data1 respectively to eNode-B and R-UE, or the 2nd stage was that RN sends data data3=data1
Data2 is to eNode-B and R-UE.
If adopt new transmission plan, the 2nd stage (data that RN will receive are through transmission again after XOR) and the UE1 of the 3rd stage of the transmission plan general reference CBDR that this is new (RN will send after the data process XOR that receive again), SDD need to obtain the scenes such as the RNTI of UE2 or the RNTI that UE2 need to obtain UE1 (being directly carry out data between UE mutual), when above-mentioned scene occured, terminal can't correctly be completed data exchange process according to standard agreement corresponding in existing system.
When adopting above-mentioned new transmission plan to carry out transfer of data in correlation technique, terminal can't correctly be completed the problem of data interaction, not yet proposes at present effective solution.
Summary of the invention
When adopting above-mentioned new transmission plan to carry out transfer of data in correlation technique, terminal can't correctly be completed the problem of data interaction, the invention provides a kind of data transmission method, Apparatus and system, to address the above problem at least.
According to a first aspect of the invention, provide a kind of data transmission method, the method comprises: network equipment is the RNTI of terminal configuration appointment, and wherein, the RNTI of this appointment comprises above-mentioned terminal and the public RNTI of opposite end the transmission of data; Above-mentioned network equipment combination sends to the data of this terminal and this opposite end, uses above-mentioned public RNTI to carry out scrambling to the data of combination; This network equipment sends to above-mentioned terminal and above-mentioned opposite end with the above-mentioned data of scrambling.
The RNTI of above-mentioned appointment also comprises the RNTI of terminal self; Above-mentioned data transmission method also comprises: above-mentioned network equipment receives the transmission data of self terminal, and uses the RNTI of this terminal self to carry out descrambling to sending data.
Above-mentioned public RNTI can be the shared RNTI of terminal room the transmission of data that above-mentioned net side apparatus covers, and perhaps this public RNTI is the RNTI that shares between terminal and opposite end.
Send to the data of terminal and opposite end to comprise control information in control channel and/or the data message in data channel.
Above-mentioned network equipment can be relay station RN or base station eNB.
According to a second aspect of the invention, provide a kind of data transmission method, the method comprises: terminal receives the RNTI of network equipment configuration appointment, and wherein, the RNTI of this appointment comprises above-mentioned terminal and the public RNTI of opposite end the transmission of data; This terminal receives the data splitting that above-mentioned network equipment sends, and uses above-mentioned public RNTI to carry out descrambling to this data splitting; The data splitting of above-mentioned terminal after to descrambling splits, and obtains sending to the data of self.
The above-mentioned RNTI that states appointment can also comprise the RNTI of terminal self.
When terminal sends data to the opposite end, use above-mentioned self RNTI to carry out scrambling to sent data, the data after scrambling are sent to above-mentioned network equipment.
Above-mentioned public RNTI can be the shared RNTI of terminal room the transmission of data that above-mentioned net side apparatus covers, and perhaps this public RNTI is the RNTI that shares between terminal and opposite end.
According to a third aspect of the present invention, provide a kind of data transmission method, the method comprises: terminal is obtained the RNTI of the transmission of data opposite end; Above-mentioned terminal receives the data from this opposite end, and uses the RNTI of this opposite end to carry out descrambling to above-mentioned data.
The RNTI that terminal is obtained the transmission of data opposite end comprises: terminal receives the RNTI of the appointment of network equipment configuration, and wherein, the RNTI of this appointment can comprise the RNTI of terminal self and the RNTI of the transmission of data opposite end; Perhaps, terminal receives the RNTI of the terminal self of network equipment configuration, and with the transmission of data opposite end mutual RNTI separately mutually.
According to a fourth aspect of the present invention, provide a kind of data transmission device, this device comprises: distribution module, be used to the RNTI of terminal configuration appointment, and wherein, the RNTI of this appointment comprises this terminal and the public RNTI of opposite end the transmission of data; The data composite module is used for the data that combination sends to above-mentioned terminal and above-mentioned opposite end; Scrambling module is used for using above-mentioned public RNTI to carry out scrambling to the above-mentioned data of data composite module combination; Sending module is used for the above-mentioned data of scrambling module scrambling are sent to above-mentioned terminal and above-mentioned opposite end.
The RNTI of the appointment of above-mentioned module assigns can also comprise the RNTI of terminal self; Said apparatus also comprises: descrambling module is used for receiving the transmission data of self terminal, and uses the RNTI of this terminal self to carry out descrambling to these transmission data.
Said apparatus can be arranged on relay station RN or base station eNB.
According to a fifth aspect of the present invention, provide a kind of data transmission device, this device comprises: the RNTI receiver module, be used for receiving the RNTI that network equipment configures appointment, and wherein, the RNTI of this appointment comprises the RNTI public with the opposite end the transmission of data; Data reception module is used for receiving the data splitting that above-mentioned network equipment sends; Descrambling module is used for using the above-mentioned public RNTI that the RNTI receiver module receives to carry out descrambling to the combinations thereof data that the data receiver module receives; Split module, be used for the data splitting after the descrambling module descrambling is split, obtain sending to the data of self.
The RNTI of the above-mentioned appointment that above-mentioned RNTI receiver module receives can also comprise the RNTI of self; Said apparatus also comprises: scrambling module, be used for when to opposite end transmission data, and use above-mentioned self RNTI to carry out scrambling to sent data; Sending module is used for the data after the scrambling module scrambling are sent to above-mentioned network equipment.
According to a sixth aspect of the invention, a kind of data transmission system is provided, this system comprises: network equipment and terminal, wherein, the data transmission device that provides according to a fourth aspect of the present invention is provided this network equipment, and the data transmission device that provides according to a fifth aspect of the present invention is provided this terminal.
According to a seventh aspect of the present invention, provide a kind of data transmission device, this device comprises: the RNTI acquisition module is used for obtaining the RNTI of the transmission of data opposite end; Data reception module is used for receiving the data from this opposite end; Descrambling module, the RNTI that is used for the above-mentioned opposite end of use RNTI acquisition module reception carries out descrambling to the above-mentioned data that the data receiver module receives.
Above-mentioned RNTI acquisition module comprises: the first receiving element, be used for to receive the RNTI of the appointment of network equipment configuration, and wherein, the RNTI of this appointment can comprise the RNTI of said apparatus self and the RNTI of the transmission of data opposite end.
Above-mentioned RNTI acquisition module comprises: the second receiving element, for the RNTI of the said apparatus self that receives the network equipment configuration; Interactive unit is used for and the transmission of data mutual mutual RNTI separately in opposite end.
By the present invention, adopt the public RNTI of terminal and opposite end the transmission of data to carry out scrambling and the descrambling of data, perhaps, the data of this opposite end transmission of the RNTI descrambling of employing transfer of data opposite end, can complete data correctly mutual on the basis of reduced data transfer process, solve when adopting new transmission plan to carry out transfer of data in the correlation technique, terminal can't correctly be completed the problem of data interaction, has guaranteed the efficient of transfer of data and has improved the reliability of transfer of data.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the LTE-A system configuration of correlation technique;
Fig. 2 is the flow chart according to the data transmission method of the embodiment of the present invention;
Fig. 3 is the another kind of flow chart according to the data transmission method of the embodiment of the present invention;
Fig. 4 is the schematic network structure according to the embodiment of the present invention one;
Fig. 5 is the flow chart according to two UE interaction datas under the RN covering of the embodiment of the present invention one;
Fig. 6 is the schematic network structure according to the embodiment of the present invention two;
Fig. 7 is the flow chart according to three UE interaction datas under the eNB covering of the embodiment of the present invention two;
Fig. 8 is another flow chart according to the data transmission method of the embodiment of the present invention;
Fig. 9 is the flow chart according to two UE interaction datas under the eNB covering of the embodiment of the present invention;
Figure 10 is the structured flowchart according to the data transmission device of the embodiment of the present invention;
Figure 11 is the another kind of structured flowchart according to the data transmission device of the embodiment of the present invention;
Figure 12 is the structured flowchart according to the data transmission system of the embodiment of the present invention;
Figure 13 is another structured flowchart according to the data transmission device of the embodiment of the present invention.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.
In the prior art, when carrying out data interaction between terminal, terminal can only be come the one's own grant information of descrambling according to own corresponding RNTI, again according to oneself the correct demodulating data of grant information, when the new transmission plan of above-mentioned employing carried out transfer of data, terminal receives was data after combination, and terminal identify not go out data after making up according to own corresponding RNTI, based on this, the embodiment of the present invention provides a kind of method, Apparatus and system of transfer of data.Be elaborated below by embodiment.
A kind of method of transfer of data is provided in the present embodiment, and this data transmission method to be to be described from network side as example, as shown in Figure 2 be the flow chart of data transmission method, the method comprises the following steps (step S202-step S206):
Step S202, network equipment (for example, RN or eNB) is the RNTI of terminal configuration appointment, wherein, the RNTI of this appointment comprises above-mentioned terminal and the public RNTI of opposite end the transmission of data;
Step S204, the network equipment combination sends to the data of above-mentioned terminal and above-mentioned opposite end, uses above-mentioned public RNTI to carry out scrambling to these data of combination;
Step S206, network equipment sends to above-mentioned terminal and above-mentioned opposite end with these data of scrambling.
In the present embodiment, network equipment is the public RNTI of terminal configuration terminal and opposite end the transmission of data, use this public RNTI to carry out scrambling to the data that send to above-mentioned terminal and opposite end, then the data with scrambling send to respectively terminal and opposite end, on the basis of the flow process of having simplified transfer of data, guaranteed the normal mutual of data, solved when adopting new transmission plan to carry out transfer of data in the correlation technique, terminal can't correctly be completed the problem of data interaction, guarantee the efficient of transfer of data, and improved the reliability of transfer of data.
It can be the data that network equipment directly sends to terminal that above-mentioned network equipment sends to the data of terminal and opposite end, can be also the interaction data from above-mentioned terminal and opposite end that receives.No matter be which kind of data, after network equipment combination (for example the data that send to respectively terminal and opposite end being carried out the data of xor operation), the received data in terminal and opposite end are all identical data.
When carrying out data interaction between terminal and opposite end, network equipment is the RNTI of terminal configuration appointment, the RNTI of this appointment can also comprise the RNTI of this terminal self, like this, terminal can use the RNTI of self to carry out scrambling to the data that wish sends, network side with the RNTI of this terminal self to coming since then the data of terminal to carry out descrambling, specifically add/the descrambling mode is identical with correlation technique, repeat no more here.
Above-mentioned public RNTI can have two kinds of set-up modes, mode one, network equipment arranges a public RNTI, the RNTI that this public RNTI shares as the transmission of data between all terminals of this net side apparatus covering, all terminals under this network equipment covers can share scrambling or the descrambling that this RNTI carries out data; Mode two, above-mentioned public RNTI can also be the RNTI that shares of terminal room in twos, be the RNTI that shares between above-mentioned terminal and opposite end, in all terminals under for example network equipment covers, there is a terminal to carry out the mutual of data with the opposite end, this terminal and this opposite end can share scrambling or the descrambling that above-mentioned public RNTI carries out data, if data interaction is carried out in terminal corresponding a plurality of opposite ends, corresponding one or more publicly-owned RNTI of terminal carry out scrambling or the descrambling of data.
Send in the data of terminal and opposite end at network equipment, comprise control information in control channel and/or the data message in data channel, control information can be indicated the information such as the concrete resource location that needs mutual data shared, modulation system.Terminal and opposite end can be found the data in needed data channel accordingly.
By the foregoing description process as can be known, network equipment can before the transmission of data, be the above-mentioned public RNTI of terminal configuration adopting under the data transfer mode of simplifying.Certainly, no longer during the transmission of data, can discharge this public RNTI when terminal room corresponding to public RNTI.Perhaps, also can for the fixing public RNTI of terminal configuration, even terminal temporarily stops and the opposite end the transmission of data like this, also can keep this public RNTI for it.
Following embodiment provides the method for another kind of transfer of data, and the present embodiment describes to be described as example in end side, as shown in Figure 3 be the another kind of flow chart of data transmission method, the method comprises the following steps (step S302-step S306):
Step S302, terminal receives the RNTI of network equipment configuration appointment, and wherein, the RNTI of this appointment comprises this terminal and the public RNTI of opposite end the transmission of data;
Step S304, terminal receives the data splitting that above-mentioned network equipment sends, and uses this public RNTI to carry out descrambling to this data splitting;
Step S306, the data splitting of terminal after to descrambling splits, and obtains sending to the data of self.
The fractionation mode of the present embodiment is corresponding with the compound mode of above-mentioned network equipment employing, and when for example above-mentioned network equipment adopted xor operation to carry out the data combination, the fractionation mode here was also xor operation.
In the present embodiment, the RNTI that terminal is used and the opposite end the transmission of data is public carries out descrambling to the data splitting that receives, then thereby the data splitting after descrambling is split the data that obtain sending to self, complete the normal mutual of data, solved when adopting new transmission plan to carry out transfer of data in the correlation technique, terminal can't correctly be completed the problem of data interaction, has guaranteed the efficient of transfer of data, and has improved the reliability of transfer of data.
In the present embodiment, the RNTI of above-mentioned appointment also comprises the RNTI of this terminal self, and the RNTI of terminal self is used for scrambling data to be sent by terminal, then the data after scrambling are sent to network equipment.
Public RNTI in the present embodiment can adopt the mode in above-described embodiment to arrange, and namely the mode in aforesaid way one and mode two, repeat no more here.
RNTI corresponding to terminal can comprise the RNTI of the first type and the RNTI of the second type, corresponding RNTI when wherein the RNTI of the first type refers to that terminal adopts unspecific transmission plan, be the RNTI of above-mentioned terminal self, corresponding RNTI when the terminal that refers to the RNTI of the second type adopts specific transmission plan, i.e. above-mentioned public RNTI.After the RNTI that uses the RNTI of the first type or the second type in terminal carries out scrambling to control information and/or data message, the opposite end uses the RNTI of the first type or the RNTI of the second type to carry out descrambling to control information and/or data message, thereby correctly receives the other side's data.
The method of two kinds of transfer of data that provide for above-mentioned two embodiment is elaborated below in conjunction with the implementation procedure of preferred embodiments and drawings to above-described embodiment.
Embodiment one
Network equipment in the present embodiment describes as an example of RN example, schematic network structure as shown in Figure 4, wherein, RN is coated with two UE (following referred to as UE1 and UE2) need to carry out data interaction, can directly complete the mutual of data by RN without repeated link, and the data interaction employing of hypothesis the present embodiment is the SDD transmission plan.For example the 1st stage was that UE1 and UE2 take different subcarriers and send respectively data data1 and data2 to RN, and the 2nd stage was RN will (be data3=data1 after the data1 that receive and data2 XOR
Data2), send data data3 to UE1 and UE2, that is to say that UE1 and UE2 obtain when the 2nd stage grant information and/or data information are identical, namely corresponding is grant information and/or the data information of data3.Shown in Figure 5 is the flow chart of two UE interaction datas under RN covers, and the method comprises the following steps (step S502-step S512):
Step S502, the RN side is to the RNTI of UE1 configuration appointment, and the RNTI of this appointment comprises C-RNTI-1 and Common-RNTI, and the RN side is to the RNTI of UE2 configuration appointment, and the RNTI of this appointment comprises C-RNTI-2 and Common-RNTI.
Wherein C-RNTI-1 and C-RNTI-2 are respectively used to obtain the grant information (authorization message of data1 and data2, the below is referred to as grant-1 and grant-2), Common-RNTI is used for obtaining the grant information (following referred to as Common-grant) of data3 by UE1 and UE2.
Step S504, the C-RNTI-1 scrambling is to the CRC check position of grant-1, and the C-RNTI-2 scrambling is to the CRC check position of grant-2, and the Common-RNTI scrambling is to the CRC check position of Common-grant.
Step S506, the grant-1 under UE1 is own according to C-RNTI-1 identification (can be also scrambling), UE1 sends data1 according to grant-1 again.Same, the grant-2 under UE2 is own according to C-RNTI-2 identification, UE2 sends data2 according to grant-2 again.
After step S508, RN received the data2 that data1 that UE1 sends and UE2 send, RN carried out XOR to data1 and data2 and obtains data3, then data3 is sent to UE1 and UE2.
Step S510, UE1 identifies Common-grant according to Common-RNTI, then receives data3 according to Common-grant.Same, UE2 identifies Common-grant according to Common-RNTI, then receives data3 according to Common-grant.
Step S512, UE1 carry out XOR to data3 and data1 and obtain data2, and this data2 is the data that sent by UE2 from the above.UE2 carries out XOR to data3 and data2 and obtains data1, and this data1 is the data that sent by UE1.
Above-described embodiment describes UE1 in detail and UE2 carries out the process of data interaction by RN, be that UE1 and UE2 configure respectively each self-corresponding RNTI and public RNTI by RN, make the data after UE1 and UE2 can receive XOR accordingly, therefrom obtain again the data that to one's name need, thereby make the user correctly complete the mutual of data.
Embodiment two
Network equipment in the present embodiment describes as an example of eNB example, schematic network structure as shown in Figure 6, wherein, eNB is coated with three UE (following referred to as UE1, UE2 and UE3) need to carry out data interaction, and what suppose that UE1 in the present embodiment and the data interaction between eNB adopt is that conventional transmission plan (is unspecific transmission plan, unicast transmission scheme for example), what the data interaction between UE1 and UE2 was adopted is the SDD transmission plan, and what the data interaction between UE1 and UE3 was adopted is also the SDD transmission plan.
As shown in Figure 7 be the flow chart of three UE interaction datas under eNB covers, the method comprises the following steps (step S702-step S730):
Step S702, eNB configure respectively the RNTI of appointment to UE1, UE2, UE3, the RNTI of this appointment is respectively C-RNTI-I, C-RNTI-2 and C-RNTI-3.
Wherein C-RNTI-I, C-RNTI-2 and C-RNTI-2 are respectively used to obtain the grant information (following referred to as grant-1, grant-2 and grant-3) of data1, data2 and data3.
Step S704, when UE1 needs and UE2 when setting up the SDD transmission plan, execution in step S706, when UE1 needs and UE3 set up the SDD transmission plan, execution in step S718.
Step S706, eNB configures Common-RNTI-12 to UE1, to UE2 configuration Common-RNTI-12.
Wherein Common-RNTI-12 is used for obtaining the grant information (following referred to as Common-grant-12) of data12 by UE1 and UE2.
Step S708, the C-RNTI-1 scrambling is to the CRC check position of grant-1, and the Common-RNTI-12 scrambling is to the CRC check position of Common-grant-12.
Step S710, the grant-1 under UE1 is own according to C-RNTI-1 identification (can be also scrambling), UE1 sends data1 to RN according to grant-1 again.Same, UE2 sends data2 to RN like this.
After step S712, RN received the data that UE1 and UE2 send, RN carried out XOR to data1 and data2 and obtains data12, then data12 is sent to UE1 and UE2.
Step S714, UE1 is according to Common-RNTI2 identification (can be also scrambling) Common-grant12, and UE1 receives data12 according to Common-grant12 again.Same, UE2 identifies Common-grant12 according to Common-RNTI12, and UE2 receives data12 according to Common-grant12 again.
Step S716, UE1 carry out XOR to data12 and data1 and obtain data2, and this data2 is the data that sent by UE2 from the above.UE2 carries out XOR to data12 and data2 and obtains data1, and this data1 is the data that sent by UE1.
Step S718, eNB configures Common-RNTI-12 to UE1, to UE3 configuration Common-RNTI-13.
Wherein Common-RNTI-13 is used for obtaining the grant information (following referred to as Common-grant-13) of data13 by UE1 and UE3.
Step S720, the C-RNTI-1 scrambling is to the CRC check position of grant-1, and the Common-RNTI-13 scrambling is to the CRC check position of Common-grant-13.
Step S722, the grant-1 under UE1 is own according to C-RNTI-1 identification (can be also scrambling), UE1 sends data1 to RN according to grant-1 again.Same, UE3 sends data3 to RN like this.
After step S724, RN received the data that UE1 and UE3 send, RN carried out XOR to data1 and data3 and obtains data13, then data13 is sent to UE1 and UE3.
Step S726, UE1 is according to Common-RNTI3 identification (can be also scrambling) Common-grant13, and UE1 receives data13 according to Common-grant13 again.Same, UE3 identifies Common-grant13 according to Common-RNTI13, and UE3 receives data13 according to Common-grant13 again.
Step S728, UE1 carry out XOR to data13 and data1 and obtain data3, and it is the data that sent by UE3 that above-mentioned this data3 is as can be known arranged.UE3 carries out XOR to data13 and data3 and obtains data1, and this data1 is the data that sent by UE1.
Step S730, after Common-RNTI-12, Common-RNTI-13 were used, UE1, UE2, UE3 discharged it, and these RNTI can also be used by other-end.
Above-described embodiment describes UE1 in detail and UE2 passes through eNB interaction data or UE1 and UE3 by the process of eNB interaction data.Be the public RNTI that UE1, UE2 and UE3 configure respectively each self-corresponding RNTI and need two terminals of data interaction by RN, make UE1 when carrying out data interaction with UE2, both can receive data after XOR according to public RNTI, when UE1 and UE3 carry out data interaction, be also to adopt in a like fashion, thereby make the user correctly complete the mutual of data.
when adopting specific transmission plan between terminal, (the superincumbent new transmission plan of this specific transmission plan is no longer given unnecessary details at this), the public RNTI (corresponding to the described mode of embodiment one) of correspondence between intermediate node (can refer to RN or eNB) configuration data interactive terminal, or intermediate node configurating terminal and the publicly-owned RNTI (corresponding to the described mode of embodiment two) in opposite end, or carry out the mutual of corresponding RNTI between the data interaction terminal, the below describes the mutual mode of carrying out corresponding RNTI between the data interactive terminals.
The present embodiment provides another data transmission method, and this data transmission method refers to that terminal and opposite end directly carry out the mutual of data, need to be via the processing such as forwarding of network equipment.As shown in Figure 8 be another flow chart of data transmission method, the method comprises the following steps (step S802-step S804):
Step S802, terminal is obtained the RNTI of the transmission of data opposite end;
Step S804, terminal receives the data from the opposite end, and uses the RNTI of this opposite end to carry out descrambling to these data.
Pass through the present embodiment, terminal gets the RNTI of the transmission of data opposite end, the data that reception sends from the opposite end, the RNTI that re-uses this opposite end carries out descrambling to data, when having solved the new transmission plan of available technology adopting and having carried out transfer of data, terminal can't correctly be completed the problem of data interaction, has guaranteed the efficient of transfer of data, and has improved the reliability of transfer of data.
The RNTI that above-mentioned terminal gets the transmission of data opposite end comprises following dual mode:
Mode one is: this terminal receives the RNTI of the appointment of network equipment configuration, and the RNTI of this appointment comprises the RNTI of this terminal self and the RNTI of the transmission of data opposite end;
Mode two is: this terminal receives the RNTI of this terminal self of network equipment configuration, and with the transmission of data opposite end mutual RNTI separately mutually, if data interaction is carried out in the corresponding one or more opposite ends of terminal, terminal mutual RNTI separately in corresponding one or more opposite ends.
After terminal and opposite end have separately RNTI and the other side's RNTI, can grant information one's own according to RNTI scrambling separately, send data according to this grant information again, also can belong to according to the other side's RNTI descrambling the other side's grant information, then according to this grant information receive data.
By the foregoing description process as can be known, network equipment can before the transmission of data, be the above-mentioned public RNTI of terminal configuration adopting under the data transfer mode of simplifying.Certainly, no longer during the transmission of data, can discharge this public RNTI when terminal room corresponding to public RNTI.Perhaps, also can for the fixing public RNTI of terminal configuration, even terminal temporarily stops and the opposite end the transmission of data like this, also can keep this public RNTI for it.
For the method for transfer of data corresponding to Fig. 8, be elaborated below in conjunction with the implementation procedure of preferred embodiments and drawings to above-described embodiment.
Embodiment three
Network equipment in the present embodiment describes as an example of eNB example, and two UE (following referred to as UE1 and UE2) under eNB covers are in the time of need to carrying out data interaction, and what suppose UE1 and UE2 employing is D2D (Device to Device) transmission plan.Be that UE1 directly sends to UE2 with data, do not need the switching of other nodes.As shown in Figure 9 be the flow chart of two UE interaction datas under eNB covers, the method comprises the following steps (step S902-step S912):
Step S902, eNB give respectively UE1 and UE2 configuration C-RNTI-1 and C-RNT1-2.
Wherein C-RNTI-1 is used for obtaining the grant information (following referred to as grant-1) of data1, and C-RNTI-2 is used for obtaining the grant information (following referred to as grant-2) of data2.
Step S904 judges whether UE1 adopts the D2D transmission plan, if UE1 needs and UE2 sets up the D2D transmission plan, and execution in step S906, if not, execution in step S912 namely carries out data transmission and processing according to existing mode.
Step S906, eNB configures C-RNTI-1 to UE2.
Step S908, the C-RNTI-1 scrambling is to the CRC check position of grant-1, and the C-RNTI-2 scrambling is to the CRC check position of grant-2.
Step S910, UE1 are according to C-RNTI-1 descrambling grant-1, then according to grant-1 transmission data1, UE2 is according to C-RNTI-1 descrambling grant-1, then according to grant-1 reception data1, this data1 is namely the data that sent by UE1.
If UE2 needs and UE1 sets up the D2D transmission plan, eNB configures C-RNTI-2 to UE1.UE2 is according to C-RNTI-2 descrambling grant-2, then sends data2 according to grant-2.UE1 is also according to C-RNTI-2 descrambling grant-2, then according to grant-2 reception data2, this data2 is namely the data that sent by UE2.
The present embodiment describes the process that directly sends data between two UE in detail, and in the present embodiment, UE1 directly sends data to UE2, does not need the switching through intermediate node, and it is also like this that same UE2 sends data to UE1.ENB is that two UE configure respectively each self-corresponding RNTI, such as needing at UE1 and UE2 when setting up data interaction, eNB is the RNTI of UE2 configuration UE 1 again, in order to receive the data of UE1, same need and UE1 when setting up data interaction at UE2, eNB is the RNTI of UE1 configuration UE 2 again, in order to receive the data of UE2, thereby makes the user correctly complete the mutual of data.
Corresponding to the method for above-mentioned transfer of data, the present embodiment also provides a kind of device of transfer of data, and this device is used for realizing above-described embodiment.This device can be realized at network equipment, also can realize in end side, and the below describes to be embodied as example at network equipment, and this network equipment can be RN or eNB.
Shown in Figure 10 is the structured flowchart of data transmission device, and as shown in figure 10, this device comprises: distribution module 12, data composite module 14, scrambling module 16 and sending module 18.The below describes this structure.
Data composite module 14 is connected to distribution module 12, is used for the data that combination sends to above-mentioned terminal and above-mentioned opposite end;
Scrambling module 16 is connected to distribution module 12 and data composite module 14, is used for using above-mentioned public RNTI to carry out scrambling to the data of above-mentioned data composite module combination;
Sending module 18 is connected to scrambling module 16, is used for the data of scrambling module 16 scramblings are sent to above-mentioned terminal and above-mentioned opposite end.
Pass through the present embodiment, distribution module 12 is the RNTI of terminal configuration appointment, the RNTI of this appointment comprises terminal and the public RNTI in opposite end, scrambling module 16 uses public RNTI to carry out scrambling to the data of combination, sending module 18 sends to terminal and opposite end with the data of scrambling, has solved when adopting new transmission plan to carry out transfer of data in the correlation technique, and terminal can't correctly be completed the problem of data interaction, guarantee the efficient of transfer of data, and improved the reliability of transfer of data.
The RNTI of the appointment that above-mentioned distribution module 12 is distributed also comprises the RNTI of above-mentioned terminal self.Based on this, this device also comprises: descrambling module, and, be used for receiving the transmission data of self terminal, and use the RNTI of this terminal self to carry out descrambling to these transmission data.
The present embodiment provides a kind of data transmission device, and the present embodiment is embodied as example with this device in end side and describes.Shown in Figure 11 is the another kind of structured flowchart of data transmission device, and as shown in figure 11, this device comprises: RNTI receiver module 112, data reception module 114, descrambling module 116 and fractionation module 118.The below describes this structure.
Pass through the present embodiment, RNTI receiver module 112 receives the RNTI of network equipment configuration appointment, the RNTI of this appointment comprises the RNTI public with the opposite end the transmission of data, data reception module 114 receives the data splitting that network equipment sends, then descrambling module 116 uses public RNTI to carry out descrambling to data splitting, solved when adopting new transmission plan to carry out transfer of data in the correlation technique, terminal can't correctly be completed the problem of data interaction, guarantee the efficient of transfer of data, and improved the reliability of transfer of data.
The RNTI of the appointment that above-mentioned RNTI receiver module 112 receives can also comprise the RNTI of self.Based on this, this device also comprises: scrambling module and sending module.Wherein, scrambling module is used for using the RNTI of self to carry out scrambling to sent data when sending data; Sending module is connected to scrambling module, is used for the data after the scrambling module scrambling are sent to network equipment.
Corresponding to said method and device, the present embodiment also provides a kind of data transmission system, as shown in figure 12 be the structured flowchart of data transmission system, this data transmission system comprises: network equipment 120 and terminal 130, wherein, network equipment 120 comprises data transmission device shown in Figure 10, and terminal 130 comprises data transmission device shown in Figure 11.
Do not carry out the situation of data interaction by network equipment for terminal, such as terminal and opposite end directly carrying out data interaction, the present embodiment provides a kind of data transmission device, this device is arranged on terminal, as shown in figure 13 be the structured flowchart of data transmission device, this device comprises: RNTI acquisition module 132, data reception module 134 and descrambling module 136.The below describes this structure.
Data reception module 134 is connected to RNTI acquisition module 132, is used for receiving the data from the opposite end;
Pass through the present embodiment, RNTI acquisition module 132 gets the RNTI of the transmission of data opposite end, the data that data reception module 134 receives from the opposite end, then descrambling module 136 makes the RNTI of opposite end carry out descrambling to the data that receive, solved when adopting new transmission plan to carry out transfer of data in the correlation technique, terminal can't correctly be completed the problem of data interaction, makes terminal can correctly complete data interaction.
The first receiving element be used for to receive the RNTI of the appointment of network equipment configuration, and wherein, the RNTI of this appointment comprises the RNTI of this device self and the RNTI of the transmission of data opposite end.
Above-mentioned the first receiving element is the mode of the RNTI of opposite end of obtaining by network equipment, the present embodiment can also adopt following the second receiving element and interactive unit, the mutually mutual RNTI of terminal room, wherein, the second receiving element is for the RNTI of this device that receives the network equipment configuration self; Interactive unit is connected to the first receiving element and the second receiving element, is used for and the transmission of data mutual mutual RNTI separately in opposite end.
Certainly; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding change and within distortion all should belong to the protection range of claim of the present invention.
As can be seen from the above description, the present invention can be applicable to bidirectional data interaction communication process complete between two terminals well, solved when adopting new transmission plan to carry out transfer of data in the correlation technique, terminal can't correctly be completed the problem of data interaction, solved the RNTI identification problem, guarantee the efficient of transfer of data, and improved the reliability of transfer of data.
obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step being made into the single integrated circuit module realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (19)
1. a data transmission method, is characterized in that, comprising:
Network equipment is the Radio Network Temporary Identifier RNTI of terminal configuration appointment, and wherein, the RNTI of described appointment comprises described terminal and the public RNTI of opposite end the transmission of data;
Described network equipment combination sends to the data of described terminal and described opposite end, uses described public RNTI to carry out scrambling to the described data of combination;
Described network equipment sends to described terminal and described opposite end with the described data of scrambling.
2. method according to claim 1, is characterized in that, the RNTI of described appointment also comprises the RNTI of described terminal self;
Described method also comprises: described network equipment receives the transmission data from described terminal, and uses the RNTI of described terminal self to carry out descrambling to described transmission data.
3. method according to claim 1, is characterized in that, described public RNTI is the shared RNTI of terminal room the transmission of data that described net side apparatus covers, and perhaps described public RNTI is the RNTI that shares between described terminal and described opposite end.
4. method according to claim 1, is characterized in that, sends to the data of described terminal and described opposite end to comprise control information in control channel and/or the data message in data channel.
5. the described method of any one according to claim 1-4, is characterized in that, described network equipment is relay station RN or base station eNB.
6. a data transmission method, is characterized in that, comprising:
Terminal receives the Radio Network Temporary Identifier RNTI of network equipment configuration appointment, and wherein, the RNTI of described appointment comprises described terminal and the public RNTI of opposite end the transmission of data;
Described terminal receives the data splitting that described network equipment sends, and uses described public RNTI to carry out descrambling to described data splitting;
The data splitting of described terminal after to descrambling splits, and obtains sending to the data of self.
7. method according to claim 6, is characterized in that, the RNTI of described appointment also comprises the RNTI of described terminal self;
Described method also comprises: when described terminal sends data to described opposite end, use described self RNTI to carry out scrambling to sent data, the described data after scrambling are sent to described network equipment.
8. method according to claim 6, is characterized in that, described public RNTI is the shared RNTI of terminal room the transmission of data that described net side apparatus covers, and perhaps described public RNTI is the RNTI that shares between described terminal and described opposite end.
9. a data transmission method, is characterized in that, comprising:
Terminal is obtained the Radio Network Temporary Identifier RNTI of the transmission of data opposite end;
Described terminal receives the data from described opposite end, and uses the RNTI of described opposite end to carry out descrambling to described data.
10. method according to claim 9, is characterized in that, the RNTI that described terminal is obtained the transmission of data opposite end comprises:
Described terminal receives the RNTI of the appointment of network equipment configuration, and wherein, the RNTI of described appointment comprises the RNTI of described terminal self and the RNTI of the transmission of data opposite end; Perhaps,
Described terminal receives the RNTI of the described terminal self of network equipment configuration, and with the transmission of data opposite end mutual RNTI separately mutually.
11. a data transmission device is characterized in that, comprising:
Distribution module is used to the Radio Network Temporary Identifier RNTI of terminal configuration appointment, and wherein, the RNTI of described appointment comprises described terminal and the public RNTI of opposite end the transmission of data;
The data composite module is used for the data that combination sends to described terminal and described opposite end;
Scrambling module is used for using described public RNTI to carry out scrambling to the described data of described data composite module combination;
Sending module is used for the described data of described scrambling module scrambling are sent to described terminal and described opposite end.
12. device according to claim 11 is characterized in that, the RNTI of the described appointment of described module assigns also comprises the RNTI of described terminal self;
Described device also comprises: descrambling module is used for receiving the transmission data from described terminal, and uses the RNTI of described terminal self to carry out descrambling to described transmission data.
13. device according to claim 11 is characterized in that, described device is arranged on relay station RN or base station eNB.
14. a data transmission device is characterized in that, comprising:
The RNTI receiver module is used for receiving the Radio Network Temporary Identifier RNTI that network equipment configures appointment, and wherein, the RNTI of described appointment comprises the RNTI public with the opposite end the transmission of data;
Data reception module is used for receiving the data splitting that described network equipment sends;
Descrambling module is used for using the described public RNTI that described RNTI receiver module receives to carry out descrambling to the described data splitting that described data reception module receives;
Split module, be used for the data splitting after described descrambling module descrambling is split, obtain sending to the data of self.
15. device according to claim 14 is characterized in that, the RNTI of the described appointment that described RNTI receiver module receives also comprises the RNTI of self;
Described device also comprises: scrambling module, be used for when to described opposite end transmission data, and use described self RNTI to carry out scrambling to sent data; Sending module is used for the described data after described scrambling module scrambling are sent to described network equipment.
16. a data transmission system is characterized in that, comprising: network equipment and terminal, wherein, described network equipment comprises the described device of claim 11 or 12, described terminal comprises the described device of claims 14 or 15.
17. a data transmission device is characterized in that, comprising:
The RNTI acquisition module is used for obtaining the Radio Network Temporary Identifier RNTI of the transmission of data opposite end;
Data reception module is used for receiving the data from described opposite end;
Descrambling module is used for using the RNTI of the described opposite end that described RNTI acquisition module receives to carry out descrambling to the described data that described data reception module receives.
18. device according to claim 17 is characterized in that, described RNTI acquisition module comprises:
The first receiving element be used for to receive the RNTI of the appointment of network equipment configuration, and wherein, the RNTI of described appointment comprises the RNTI of described device self and the RNTI of the transmission of data opposite end.
19. device according to claim 17 is characterized in that, described RNTI acquisition module comprises:
The second receiving element is for the RNTI of the described device self that receives the network equipment configuration;
Interactive unit is used for and the transmission of data mutual mutual RNTI separately in opposite end.
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