CN102761904A - Data transmission method, equipment and system - Google Patents

Abstract

The invention provides a data transmission method, equipment and a system. The data transmission method comprises the steps as follows: first network side equipment receives downlink business data from a core network and adopts first access technology; and the first network side equipment and the second network side equipment adopting second access technology cooperatively send the downlink business data to UE (Unified Equipment). The invention can solve the problems in the existing network deployment that the throughput of a user terminal is limited because the capacity of a single system is not enough and the resources are wasted because the load balance between the systems can be realized only in a switching and redirecting manner.

Description

Data transmission method, equipment and system

Technical field

The present invention relates to the communications field, in particular to data transmission method, equipment and system.

Background technology

For wireless communication technology, all be assigned with the corresponding work frequency range separately, each wireless communication system all is operated in the frequency range of having planned.Along with the development of radio communication technology, communication system needs increasing transmission rate, to satisfy the professional higher demand of multiple wireless transmission.The work on hand frequency band of communication system possibly can't satisfy the more requirement of high transfer rate, needs bigger bandwidth of operation.

LTE (Long Term Evolution; Long Term Evolution) and HPSA (High Speed PacketAccess; The high speed downlink packet access) system all has the protocol stack structure of layering; From the physical layer at the end to MAC (Multiple Access Channel, multiple access access channel) layer, RLC (Radio Link Control, Radio Link control) layer, PDCP (the packet data polymerized agreement of Packet Data Convergence Protocol) layer to higher layer; Each layer all has relatively independent function, and has data interaction with last layer and following one deck.For LTE or HSPA system, at the terminal or network side base station when sending data, packet arrives the PDCP layer from the upper strata; Processing through excessive compression (header compression), encryption functions such as (ciphering); Produce PDCP PDU (Packet Data Unit, Packet Data Unit), sending to down one deck is rlc layer; Send to MAC layer, physical layer more successively after the processing through the rlc layer process, send to receiving terminal through air interface at last.Then carry out opposite process at receiving terminal, data are passed through the processing of physical layer, MAC layer, rlc layer, PDCP layer successively, are sent to higher one deck at last.The PDCP layer function of HSPA and LTE is difference to some extent, and the PDCP layer of LTE has the function of encryption (ciphering), deciphering (deciphering) and integrity protection (integrity protection and integrity verification).

In order to realize higher transmission rate, 3GPP has proposed the technical scheme of carrier aggregation (CarrierAggregation), utilizes a plurality of carrier waves to be the subscriber equipment service simultaneously.Existing carrier aggregation scheme mainly utilizes a plurality of carrier waves in the triangular web for subscriber equipment service to be provided simultaneously; As utilizing the carrier wave more than 2 or 2 to keep communicating by letter with subscriber equipment simultaneously among the HSPA, perhaps utilize the carrier wave more than 2 or 2 to keep communicating by letter with subscriber equipment simultaneously among the LTE.Yet in the network of reality, because the number of carrier frequencies quantitative limitation, some mobile operator do not have enough frequencies to dispose a plurality of HSPA and LTE system simultaneously, and mobile operator can be according to the subscriber equipment quantity adjustment HSPA of access network and the carrier frequency number of LTE.Under this network design, the situation of the off-capacity of individual system may appear, limited the throughput of user terminal, and the load balancing between system can only realize through the method for switching, be redirected, can cause the waste of resource.

To in the correlation technique in existing network design; The situation that the off-capacity of individual system may occur; Limited the throughput of user terminal; And the load balancing between system can only realize through the method for switching, be redirected, and can cause the problem of the waste of resource, does not propose effective solution at present as yet.

Summary of the invention

Main purpose of the present invention is to provide data transmission method, equipment and system; Above-mentioned in existing network design to solve at least; The situation that the off-capacity of individual system may occur; Limited the throughput of user terminal, and the load balancing between system can only realize through the method for switching, be redirected, can cause the problem of the waste of resource.

According to an aspect of the present invention, a kind of data transmission method is provided, has comprised: first network equipment receives the downlink service data from core net, and said first network equipment adopts first access technology; Said first network equipment associating is sent to user equipment (UE) with second network equipment that adopts second access technology with said downlink service data.

Preferably; Said first network equipment associating is sent to user equipment (UE) with self adopting second network equipment of different access technologies with said downlink service data; Comprise: when being anchor point with said first network equipment; Said first network equipment is split as two parts with said downlink service data; First's downlink service data is sent to said UE, the second portion downlink service data is sent to said second network equipment, said second portion downlink service data is sent to said UE by said second network equipment; Wherein, there is data transmission interface between said first network equipment and second network equipment.

Preferably; When said first access technology is Long Term Evolution LTE; When said second access technology is high speed downlink packet access technology HSPA; Said first network equipment is the LTE base station eNB, and said second network equipment is the HSPA radio network controller (RNC), and said downlink service data is packet data polymerized protocol service data cell PDCP SDU; Said LTE eNB is split as PDCP SDU of first and second portion PDCP SDU with said PDCP SDU; And constituting the protocol Data Unit PDCP PDU of packet data polymerized agreement respectively, i.e. the PDCP of first PDU and second portion PDCP PDU are sent to the rlc layer of self radio controlling links rlc layer and said HSPA RNC respectively; Said LTE eNB is sent to said UE with the said PDCP PDU of first, and said HSPA RNC is sent to said UE with second portion PDCP PDU; Perhaps working as said first access technology is HSPA; When said second access technology is LTE; Said first network equipment is HSPA RNC, and said second network equipment is LTE eNB, and said downlink service data is PDCP SDU; Said HSPA RNC is split as PDCP SDU of first and second portion PDCP SDU with said PDCP SDU; And constituting PDCP PDU respectively, i.e. the PDCP of first PDU and second portion PDCP PDU are sent to the rlc layer of self radio controlling links rlc layer and said LTE eNB respectively; Said HSPA RNC is sent to said UE with the said PDCP PDU of first, and said LTE eNB is sent to said UE with part the 2nd PDCP PDU.

Preferably, said LTE eNB is split as a PDCP SDU and the 2nd PDCP SDU with said PDCP SDU, comprising: said LTE eNB carries out the operation of PDCP layer to said PDCP SDU, and said operation comprises header-compressed, integrity protection and encryption; The PDCP SDU that will pass through the operation of said PDCP layer is split as a said PDCP SDU and said second portion PDCP SDU according to preset fractionation algorithm, and is that the said PDCP SDU of first distributes identical PDCP sequence number SN with said second portion PDCP SDU.

Preferably; Said first network equipment is split as two parts with said downlink service data, comprising: said first network equipment is according to the quality of wireless channel of said first access technology network corresponding with said second access technology and the fractionation ratio that load information is confirmed said downlink service data.

Preferably; Said first network equipment associating is sent to user equipment (UE) with self adopting second network equipment of different access technologies with said downlink service data; Comprise: when being anchor point with said first network equipment; Said first network equipment is sent to said UE with said downlink service data, perhaps said downlink service data is sent to said second network equipment, by said second network equipment said downlink service data is sent to said UE; Wherein, there is data transmission interface between said first network equipment and second network equipment.

Preferably, when said first access technology is Long Term Evolution LTE, when said second access technology is high speed downlink packet access technology HSPA; Said first network equipment is the LTE base station eNB; Said second network equipment is the HSPA radio network controller (RNC), and said downlink service data is packet data polymerized protocol service data cell PDCP SDU, and said LTE eNB does not split said PDCP SDU; Handle the back through the PDCP process of LTE and constitute PDCP PDU; And be sent to the rlc layer of LTE eNB, by LTE eNB packet is sent to UE, perhaps; Said LTE eNB is sent to said UE with the rlc layer that said PDCP PDU is sent to HSPA RNC by said HSPA RNC; Perhaps working as said first access technology is HSPA, and when said second access technology was LTE, said first network equipment was HSPA RNC; Said second network equipment is LTE eNB, and said downlink service data is PDCP SDU, and said HSPA RNC does not split said PDCP SDU; Handle the back through the PDCP process of HSPA and constitute PDCP PDU, and be sent to the rlc layer of HSPA RNC, packet is sent to UE by HSPA RNC; Perhaps; Said HSPA RNC is sent to the rlc layer of LTE eNB with said PDCP SDU, is sent to said UE by said LTE eNB, and the rlc layer of at this moment said LTE eNB possesses to be encrypted and the function of integrity protection.

Preferably, said first access technology and second access technology comprise one of following: LTE, HSPA; LTE TDD, LTE FDD; Universal mobile communications technology UMTS, LTE.

According to another aspect of the present invention; Other a kind of data transmission method is provided; Comprise: user equipment (UE) receives the downlink service data that first network equipment and second network equipment send respectively; Wherein, said first network equipment adopts first access technology, and said second network equipment adopts second access technology; Said UE is sent to the upper strata after said downlink service data is handled through packet data polymerized agreement PDCP process.

Preferably; Said UE is sent to the upper strata after said downlink service data is handled through the PDCP process; Comprise: said UE utilizes first processing module of self to receive first's downlink service data that said first network equipment sends, and utilizes second processing module of self to receive the second portion downlink service data that said second network equipment sends, wherein; Dispose first processing module that is complementary with said first access technology among the said UE; And with second processing module that said second access technology is complementary, wherein, have data transmission interface between said first processing module and said second processing module; Said UE merges processing with said first downlink service data and said second portion downlink service data, and carries out the processing of PDCP process, is sent to the upper strata.

Preferably; Said UE merges processing with said first downlink service data and said second portion downlink service data; Comprise: when being anchor point with said first network equipment, said UE utilizes said first processing module that said first downlink service data and said second portion downlink service data are merged.

Preferably; Said UE merges processing with said first downlink service data and said second portion downlink service data; Comprise: when said first access technology is Long Term Evolution LTE, when said second access technology was high speed downlink packet access technology HSPA, said first network equipment was the LTE base station eNB; Said second network equipment is the HSPA radio network controller (RNC); Said downlink service data is packet data polymerized protocol service data cell part PDCP PDU, and said first processing module is the LTE module, and said second processing module is the HSPA module; Said UE utilizes said LTE module to receive the PDCP PDU of first; And utilize said LTE module to receive second portion PDCP PDU from said HSPA module, and search PDCPPDU of first and second portion PDCPPDU with identical PDCP sequence number SN, will merge except that the part the said PDCP SN; And carry out the operation of PDCP process, said operation comprises that deciphering, integrality are verified, header decompression; Perhaps working as said first access technology is HSPA, and when said second access technology was LTE, said first network equipment was HSPA RNC; Said second network equipment is LTE eNB, and said downlink service data is PDCP PDU, and said first processing module is the HSPA module; Said second processing module is the LTE module, and said UE utilizes said HSPA module to receive the PDCP PDU of first, and utilizes said HSPA module to receive second portion PDCP PDU from said LTE module; Search PDCPPDU of first and second portion PDCPPDU with identical PDCP sequence number SN; To merge except that the part the said PDCP SN, and carry out the operation of PDCP process, said operation comprises header decompression; Wherein, said LTE module is verified the rlc layer that operates in said LTE module to the deciphering of data and integrality and is carried out.

Preferably; Said UE is sent to the upper strata after said downlink service data is handled through the PDCP process; Comprise: said UE utilizes first processing module of self to receive first's downlink service data that said first network equipment sends, and utilizes second processing module of self to receive the second portion downlink service data that said second network equipment sends, wherein; Dispose first processing module that is complementary with said first access technology among the said UE; And with second processing module that said second access technology is complementary, wherein, have data transmission interface between said first processing module and said second processing module; Said UE carries out the processing of PDCP process with said first downlink service data and said second portion downlink service data, and is sent to the upper strata respectively.

Preferably; Said UE carries out the processing of PDCP process with said first downlink service data and said second portion downlink service data; And be sent to the upper strata respectively; Comprise: when being anchor point with said first network equipment, said UE utilizes said first processing module to be sent to the upper strata through said first downlink service data and the said second portion downlink service data after the PDCP process is handled.

Preferably; Said UE carries out the processing of PDCP process with said first downlink service data and said second portion downlink service data; Comprise: when said first access technology is Long Term Evolution LTE, when said second access technology was high speed downlink packet access technology HSPA, said first network equipment was the LTE base station eNB; Said second network equipment is the HSPA radio network controller (RNC); Said downlink service data is packet data polymerized protocol service data cell part PDCP SDU, and said first processing module is the LTE module, and said second processing module is the HSPA module; Said UE utilizes said LTE module to receive the PDCP PDU of first; And utilize said LTE module to receive second portion PDCP PDU from said HSPA module, and said PDCP PDU of first and said second portion PDCP PDU are carried out the operation of PDCP process, said operation comprises that deciphering, integrality are verified, header decompression; Perhaps working as said first access technology is HSPA, and when said second access technology was LTE, said first network equipment was HSPA RNC; Said second network equipment is LTE eNB; Said downlink service data is PDCP SDU, and said first processing module is the HSPA module, and said second processing module is the LTE module; Said UE utilizes said HSPA module to receive the PDCP PDU of first; And utilize said HSPA module to receive second portion PDCP PDU from said LTE module, and said PDCP PDU of first and said second portion PDCP PDU are carried out the operation of PDCP process, said operation comprises header decompression; Wherein, said LTE module is verified the rlc layer that operates in said LTE module to the deciphering of data and integrality and is carried out.

Preferably, said first access technology and second access technology comprise one of following: LTE, HSPA; LTE TDD, LTE FDD; Universal mobile communications technology UMTS, LTE.

According to another aspect of the present invention, other a kind of data transmission method is provided, has comprised: user equipment (UE) is handled uplink business data to be sent; Said UE utilizes first network equipment that adopts first access technology and second network equipment that adopts second access technology to unite the uplink business data that sends after handling simultaneously.

Preferably, said user equipment (UE) is handled uplink business data to be sent, comprising: when being anchor point with said first network equipment; Said UE utilizes first processing module of self that said uplink business data is split as two parts; First's uplink business data is sent to said first network equipment, the second portion uplink business data is sent to said second network equipment, wherein; Dispose first processing module that is complementary with said first access technology among the said UE; And with second processing module that said second access technology is complementary, wherein, have data transmission interface between said first processing module and said second processing module.

Preferably; When said first access technology is Long Term Evolution LTE, when said second access technology was high speed downlink packet access technology HSPA, said first network equipment was the LTE base station eNB; Said second network equipment is the HSPA radio network controller (RNC); Said uplink business data is packet data polymerized protocol service data cell PDCP SDU, and said first processing module is the LTE module, and said second processing module is the HSPA module; Said UE utilizes said LTE module that said PDCP SDU is split as PDCP SDU of first and second portion PDCP SDU; And constitute the protocol Data Unit PDCP PDU of packet data polymerized agreement respectively, promptly the PDCP of first PDU and second portion PDCP PDU are sent to the Radio Link control rlc layer of said LTE eNB and the rlc layer of said HSPA RNC respectively; Perhaps working as said first access technology is HSPA, and when said second access technology was LTE, said first network equipment was HSPA RNC; Said second network equipment is LTE eNB; Said downlink service data is PDCP SDU, and said first processing module is the HSPA module, and said second processing module is the LTE module; Said UE utilizes said HSPA module that said PDCP SDU is split as PDCP SDU of first and second portion PDCP SDU; And constitute PDCP PDU respectively, promptly the PDCP of first PDU and second portion PDCP PDU are sent to the rlc layer of HSPA RNC and the rlc layer of said LTE eNB respectively.

Preferably; Said UE is with said PDCP SDU of first and second portion PDCP SDU; Be sent to the rlc layer of HSPA RNC and the rlc layer of said LTE eNB respectively, comprise: said UE confirms preferably to send the network equipment of said uplink business data to it according to the quality of wireless channel and the load information of said first access technology network corresponding with said second access technology.

Preferably, said first access technology and second access technology comprise one of following: LTE, HSPA; LTE TDD, LTE FDD; Universal mobile communications technology UMTS, LTE.

According to another aspect of the present invention; Other a kind of data transmission method is provided; Comprise: first network equipment receives first uplink business data that user equipment (UE) sends, and from second network equipment, obtains second uplink business data that said second network equipment receives, and said first network equipment adopts first access technology; Said second network equipment adopts second access technology, and has data transmission interface between said first network equipment and second network equipment; Said first network equipment is sent to the upper strata after said first uplink business data and said second uplink business data are merged processing.

Preferably; When said first access technology is Long Term Evolution LTE; When said second access technology is high speed downlink packet access technology HSPA; Said first network equipment is the LTE base station eNB, and said second network equipment is the HSPA radio network controller (RNC), and said first uplink business data and said second uplink business data are respectively PDCP PDU of first and second portion PDCP PDU; Said LTE eNB therefrom searches PDCP PDU of first and the second portion PDCP PDU with identical PDCP sequence number SN; To merge except that the part the said PDCP SN, and carry out the operation of PDCP process, said operation comprises that deciphering, integrality are verified, header decompression; Perhaps working as said first access technology is HSPA; When said second access technology is LTE; Said first network equipment is HSPA RNC; Said second network equipment is LTEeNB, and said first uplink business data and said second uplink business data are respectively PDCP PDU of first and second portion PDCP PDU, and said HSPA RNC therefrom searches PDCP PDU of first and the second portion PDCP PDU with identical PDCP SN; To merge except that the part the said PDCP SN; And carry out the operation of PDCP process, and said operation comprises header decompression, said LTE eNB one side will be carried out at the rlc layer of LTE eNB the deciphering and the integrality verification operation of data.

According to another aspect of the present invention, a kind of network equipment is provided, has comprised: first receiver module is used to receive the downlink service data from core net; First sending module, other the different network equipments of access technology that are used to unite with self adopting are sent to user equipment (UE) with said downlink service data.

According to another aspect of the present invention; A kind of user equipment (UE) is provided; Comprise: second receiver module is used to receive the downlink service data that first network equipment and second network equipment send respectively, wherein; Said first network equipment adopts first access technology, and said second network equipment adopts second access technology; Second sending module is used for being sent to the upper strata after the packet data polymerized agreement PDCP process processing of said downlink service data process.

According to another aspect of the present invention, a kind of user equipment (UE) is provided, has comprised: processing module is used to handle uplink business data to be sent; The 3rd sending module is used for utilizing simultaneously first network equipment that adopts first access technology and second network equipment that adopts second access technology to unite the uplink business data that sends after handling.

According to another aspect of the present invention; A kind of network equipment is provided, has comprised: the 3rd receiver module is used to receive first uplink business data that user equipment (UE) sends; And from second network equipment, obtain second uplink business data that said second network equipment receives; Self adopt first access technology, said second network equipment adopts second access technology, and has data transmission interface between self and second network equipment; Merge module, be sent to the upper strata after being used for said first uplink business data and said second uplink business data merged processing.

According to another aspect of the present invention; A kind of data transmission system is provided; Comprise first network equipment, second network equipment and user equipment (UE): said first network equipment; Be used to receive the downlink service data from core net, said first network equipment adopts first access technology; Associating is sent to UE with second network equipment that adopts second access technology with said downlink service data; Said second network equipment is used for associating and with said first network equipment said downlink service data is sent to said UE; Said UE is used to receive said downlink service data.

According to another aspect of the present invention, a kind of data transmission system is provided, has comprised first network equipment, second network equipment and user equipment (UE): said UE is used to handle uplink business data to be sent; Utilize first network equipment that adopts first access technology and second network equipment that adopts second access technology to unite the uplink business data that sends after handling; Said first network equipment is used for uniting the uplink business data that sends after handling with second network equipment that adopts second access technology; Said second network equipment is used for uniting the uplink business data that sends after handling with first network equipment that adopts first access technology.

In embodiments of the present invention, adopt the network equipment of different access technologies to unite downlink business is sent to UE, promptly; Can utilize dissimilar carrier waves to carry out transfer of data simultaneously; Enlarge the bandwidth of operation of UE, increase transmission rate, the wireless transmission that satisfies high request is professional; Not only can improve the throughput of user terminal, can also make network obtain effect of load balance.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 is the process chart according to first kind of data transmission method of the embodiment of the invention;

Fig. 2 is the process chart according to second kind of data transmission method of the embodiment of the invention;

Fig. 3 is the process chart according to the third data transmission method of the embodiment of the invention;

Fig. 4 is the UE internal agreement stack architecture sketch map according to the embodiment of the invention;

Fig. 5 is the deployment architecture sketch map according to the network of the embodiment of the invention;

Fig. 6 is the scheme one downlink data transmission schematic flow sheet according to the embodiment of the invention;

Fig. 7 is the scheme one transmitting uplink data schematic flow sheet according to the embodiment of the invention;

Fig. 8 is the scheme two downlink data transmission schematic flow sheets according to the embodiment of the invention;

Fig. 9 is the scheme two transmitting uplink data schematic flow sheets according to the embodiment of the invention;

Figure 10 is first kind of structural representation according to the network equipment of the embodiment of the invention;

Figure 11 is first kind of structural representation according to the UE of the embodiment of the invention;

Figure 12 is second kind of structural representation according to the UE of the embodiment of the invention;

Figure 13 is second kind of structural representation according to the network equipment of the embodiment of the invention;

Figure 14 is the structural representation according to the data transmission system of the embodiment of the invention.

Embodiment

Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.

Mention in the correlation technique; In the network of reality; Because the number of carrier frequencies quantitative limitation, some mobile operator do not have enough frequencies to dispose a plurality of HSPA and LTE system simultaneously, and mobile operator can be according to the subscriber equipment quantity adjustment HSPA of access network and the carrier frequency number of LTE.Under this network design, the situation of the off-capacity of individual system may appear, limited the throughput of user terminal, and the load balancing between system can only realize through the method for switching, be redirected, can cause the waste of resource.

For solving the problems of the technologies described above, the embodiment of the invention provides a kind of data transmission method, and its handling process is as shown in Figure 1, comprising:

Step S102, first network equipment receive the downlink service data from core net, and first network equipment adopts first access technology;

Step S104, the associating of first network equipment are sent to user equipment (UE) with second network equipment that adopts second access technology with downlink service data.

In embodiments of the present invention, adopt the network equipment of different access technologies to unite downlink business is sent to UE, promptly; Can utilize dissimilar carrier waves to carry out transfer of data simultaneously; Enlarge the bandwidth of operation of UE, increase transmission rate, the wireless transmission that satisfies high request is professional; Not only can improve the throughput of user terminal, can also make network obtain effect of load balance.

During enforcement, the associating of first network equipment is sent to user equipment (UE) with self adopting second network equipment of different access technologies with downlink service data, according to the difference of anchor point; The processing method that adopts is also different, if an equipment is designated as anchor point, then only this equipment is connected with core net; All the other equipment are not connected with core net, for example, and when being anchor point with first network equipment; First network equipment is split as two parts with downlink service data; First's downlink service data is sent to UE, the second portion downlink service data is sent to second network equipment, the second portion downlink service data is sent to UE by second network equipment; Wherein, there is data transmission interface between first network equipment and second network equipment.

Existing describe, when first access technology is Long Term Evolution LTE, when second access technology is high speed downlink packet access technology HSPA with a specific embodiment; First network equipment is the LTE base station eNB, and second network equipment is HSPA RNC (Radio Network Controller, a radio network controller); Downlink service data is PDCP SDU (Service Data Unit; Service Data Unit), LTE eNB is split as PDCP SDU of first and second portion PDCP SDU with PDCP SDU, and constitutes PDCP PDU (Protocol Data Unit respectively; Protocol Data Unit); Be PDCP PDU of first and second portion PDCP PDU, be sent to RLC (Radio Link Control, Radio Link control) layer of self and the rlc layer of HSPA RNC respectively; LTE eNB is sent to UE with the PDCP PDU of first, and HSPA RNC is sent to UE with second portion PDCPPDU;

Perhaps

When first access technology is HSPA, when second access technology was LTE, first network equipment was HSPA RNC; Second network equipment is LTE eNB; Downlink service data is PDCP SDU, and HSPA RNC is split as PDCP SDU of first and second portion PDCP SDU with PDCP SDU, and constitutes PDCP PDU respectively; Be PDCP PDU of first and second portion PDCP PDU, be sent to rlc layer of self and the rlc layer of LTE eNB respectively; HSPA RNC is sent to UE with the PDCP PDU of first, and LTE eNB is sent to UE with part the 2nd PDCP PDU.

During enforcement, LTE eNB is split as a PDCP SDU and the 2nd PDCP SDU with PDCP SDU, comprising:

LTE eNB carries out the operation of PDCP layer to PDCP SDU, and operation comprises header-compressed, integrity protection and encryption;

The PDCP SDU that will pass through the operation of PDCP layer is split as a PDCP SDU and second portion PDCP SDU according to preset fractionation algorithm; And be that the PDCP SDU of first distributes identical PDCP SN (Sequence Number, sequence number) with second portion PDCP SDU.

First network equipment is split as two parts with downlink service data; The fractionation ratio can be different according to the various network environment; More excellent; The fractionation ratio that first network equipment can be confirmed downlink service data according to the quality of wireless channel and the load information of first access technology network corresponding with second access technology, for example, for quality of wireless channel preferably the network equipment at network place distribute the downlink service data of larger proportion.

Perhaps, when the associating of first network equipment is sent to user equipment (UE) with second network equipment that self adopts different access technologies with downlink service data, can downlink service data not split yet, sends but carry out data as follows:

When being anchor point with first network equipment, first network equipment is sent to UE with downlink service data, perhaps downlink service data is sent to second network equipment, by second network equipment second portion downlink service data is sent to UE; Wherein, there is data transmission interface between first network equipment and second network equipment.

Existing describe, when first access technology is LTE, when second access technology is HSPA with a specific embodiment; First network equipment is LTE eNB, and second network equipment is HSPA RNC, and downlink service data is PDCP SDU; LTE eNB does not split PDCP SDU, handles the back through the PDCP process of LTE and constitutes PDCP PDU, and be sent to the rlc layer of LTE eNB; By LTE eNB packet is sent to UE; Perhaps, LTE eNB is sent to UE with the rlc layer that PDCP PDU is sent to HSPA RNC by HSPA RNC;

Perhaps

When first access technology is HSPA, when second access technology was LTE, first network equipment was HSPA RNC; Second network equipment is LTE eNB, and downlink service data is PDCP SDU, and HSPA RNC does not split PDCP SDU; Handle the back through the PDCP process of HSPA and constitute PDCP PDU, and be sent to the rlc layer of HSPA RNC, packet is sent to UE by HSPA RNC; Perhaps; HSPARNC is sent to the rlc layer of LTE eNB with PDCP SDU, is sent to UE by LTE eNB, and at this moment the rlc layer of LTE eNB possesses and encrypts and the function of integrity protection.

Foregoing is about a kind of associating data transmission method between HSPA and the LTE system (perhaps being called access technology); Except that these two kinds of systems, can also be applied to the scene that other system (perhaps being called access technology) is united transfer of data, for example; LTE TDD (Time Division Duplex; Time division duplex) and LTE FDD (Frequency Division Duplex, FDD), more for example; UMTS (Universal Mobile Telecommunication System, UMTS) and LTE.

Based on same inventive concept, the embodiment of the invention also provides other a kind of data transmission method, and its handling process is as shown in Figure 2, comprising:

Step S202, user equipment (UE) receive the downlink service data that first network equipment and second network equipment send respectively, and wherein, first network equipment adopts first access technology, and second network equipment adopts second access technology;

Step S204, UE are sent to the upper strata after downlink service data is handled through the PDCP process.

In one embodiment, flow process as shown in Figure 2, step S204 is when implementing, and UE is sent to the upper strata after downlink service data is handled through the PDCP process, comprising:

UE utilizes first processing module of self to receive first's downlink service data that first network equipment sends; Utilize second processing module of self to receive the second portion downlink service data that second network equipment sends; Wherein, dispose first processing module that is complementary with first access technology among the UE, and second processing module that is complementary with second access technology; Wherein, there is data transmission interface between first processing module and second processing module;

UE merges processing with first's downlink service data and second portion downlink service data, and carries out the processing of PDCP process, is sent to the upper strata.

During enforcement, preferred, UE merges processing with first's downlink service data and second portion downlink service data, comprising:

When being anchor point with first network equipment, UE utilizes first processing module that first's downlink service data and second portion downlink service data are merged.

During enforcement, preferred, UE merges processing with first's downlink service data and second portion downlink service data, comprising:

When first access technology is LTE, when second access technology was HSPA, first network equipment was LTE eNB; Second network equipment is HSPA RNC, and downlink service data is PDCP PDU, and first processing module is the LTE module; Second processing module is the HSPA module, and UE utilizes the LTE module to receive the PDCP PDU of first, utilizes the LTE module to receive second portion PDCP PDU from the HSPA module; Therefrom search PDCP PDU of first and second portion PDCP PDU with identical PDCP sequence number SN; To merge except that the part the PDCP SN, and carry out the operation of PDCP process, operation comprises that deciphering, integrality are verified, header decompression;

Perhaps

When first access technology is HSPA, when second access technology was LTE, first network equipment was HSPA RNC; Second network equipment is LTE eNB, and downlink service data is PDCP PDU, and first processing module is the HSPA module; Second processing module is the LTE module, and UE utilizes the HSPA module to receive the PDCP PDU of first, and utilizes the HSPA module to receive second portion PDCP PDU from the LTE module; Therefrom search PDCP PDU of first and second portion PDCP PDU with identical PDCP sequence number SN; To merge except that the part the PDCP SN, and carry out the operation of PDCP process, operation comprises that deciphering, integrality are verified, header decompression; Wherein, the LTE module is verified the rlc layer that operates in the LTE module to the deciphering of data and integrality and is carried out.

In one embodiment, flow process as shown in Figure 2, step S204 is when implementing; UE is sent to the upper strata after downlink service data is handled through the PDCP process; Can also downlink service data not merged, directly it is carried out being sent to the upper strata after the PDCP process is handled, that is:

UE utilizes first processing module of self to receive first's downlink service data that first network equipment sends; Utilize second processing module of self to receive the second portion downlink service data that second network equipment sends; Wherein, dispose first processing module that is complementary with first access technology among the UE, and second processing module that is complementary with second access technology; Wherein, there is data transmission interface between first processing module and second processing module;

UE carries out the processing of PDCP process with first's downlink service data and second portion downlink service data, and is sent to the upper strata respectively.

During enforcement, preferred, UE carries out the processing of PDCP process with first's downlink service data and second portion downlink service data, and is sent to the upper strata respectively, comprising:

When being anchor point with first network equipment, UE utilizes first processing module to be sent to the upper strata through first's downlink service data and the second portion downlink service data after the PDCP process is handled.

Describe UE with specific embodiment first's downlink service data and second portion downlink service data carried out the processing of PDCP process, comprising at present:

When first access technology is LTE, when second access technology was HSPA, first network equipment was LTE eNB; Second network equipment is HSPA RNC; Downlink service data is PDCP PDU, and first processing module is the LTE module, and second processing module is the HSPA module; UE utilizes the LTE module to receive the PDCP PDU of first; And utilize the LTE module to receive second portion PDCP PDU from the HSPA module, and PDCP PDU of first and second portion PDCP PDU are carried out the operation of PDCP process, operation comprises that deciphering, integrality are verified, header decompression;

Perhaps

When first access technology is HSPA, when second access technology was LTE, first network equipment was HSPA RNC; Second network equipment is LTE eNB, and downlink service data is PDCP PDU, and first processing module is the HSPA module; Second processing module is the LTE module, and UE utilizes the HSPA module to receive the PDCP PDU of first, and utilizes the HSPA module to receive second portion PDCP PDU from the LTE module; PDCP PDU of first and second portion PDCP PDU are carried out the operation of PDCP process; Operation comprises header decompression, and wherein, the LTE module is carried out the deciphering of the data rlc layer that verification operates in the LTE module with integrality.

Foregoing is about a kind of associating data transmission method between HSPA and the LTE system (perhaps being called access technology); Except that these two kinds of systems; Can also be applied to other system (perhaps being called access technology) and unite the scene of transfer of data, for example, LTE TDD and LTE FDD; Again for example, universal mobile communications technology UMTS and LTE.

Based on same inventive concept, the embodiment of the invention also provides other a kind of data transmission method, and its handling process is as shown in Figure 3, comprising:

Step S302, user equipment (UE) are handled uplink business data to be sent;

Step S304, UE utilize first network equipment that adopts first access technology and second network equipment that adopts second access technology to unite the uplink business data that sends after handling simultaneously.

During enforcement, user equipment (UE) is handled uplink business data to be sent, comprising:

When being anchor point with first network equipment; UE utilizes first processing module of self that uplink business data is split as two parts; First's uplink business data is sent to first network equipment, the second portion uplink business data is sent to second network equipment, wherein; Dispose first processing module that is complementary with first access technology among the UE; And with second processing module that second access technology is complementary, wherein, have data transmission interface between first processing module and second processing module.

Existing is that example describes with a specific embodiment; When first access technology is Long Term Evolution LTE, when second access technology was high speed downlink packet access technology HSPA, first network equipment was the LTE base station eNB; Second network equipment is the HSPA radio network controller (RNC); Uplink business data is packet data polymerized protocol service data cell PDCP SDU, and first processing module is the LTE module, and second processing module is the HSPA module; UE utilizes the LTE module that PDCP SDU is split as PDCP SDU of first and second portion PDCP SDU; And constitute PDCP PDU respectively, promptly the PDCP of first PDU and second portion PDCP PDU are sent to the Radio Link control rlc layer of LTE eNB and the rlc layer of HSPA RNC respectively;

Perhaps

When first access technology is HSPA, when second access technology was LTE, first network equipment was HSPA RNC; Second network equipment is LTE eNB; Downlink service data is PDCP SDU, and first processing module is the HSPA module, and second processing module is the LTE module; UE utilizes the HSPA module that PDCP SDU is split as PDCP SDU of first and second portion PDCP SDU; And constitute PDCP PDU respectively, promptly the PDCP of first PDU and second portion PDCP PDU are sent to the rlc layer of HSPA RNC and the rlc layer of LTE eNB respectively.

During enforcement, UE confirms preferably to send the network equipment of uplink business data to it according to the quality of wireless channel and the load information of first access technology network corresponding with second access technology.

Foregoing is about a kind of associating data transmission method between HSPA and the LTE system (perhaps being called access technology); Except that these two kinds of systems; Can also be applied to other system (perhaps being called access technology) and unite the scene of transfer of data, for example, LTE TDD and LTE FDD; Again for example, universal mobile communications technology UMTS and LTE.

Clearer clearer for the method elaboration ground that the embodiment of the invention is provided, existing is that example is elaborated with LTE and HSPA.

UE in the embodiment of the invention possesses dual mode configuration, and UE can use LTE and two kinds of wireless communication technologys of HSPA in the enterprising data transfer of its frequency band separately simultaneously.UE possesses LTE module and HSPA module, and two modules can be carried out data transmit-receive work independently respectively.In addition, inner at UE, LTE and HSPA module can produce the mutual of data.

The protocol stack structure of UE is as shown in Figure 4.Inner at UE, data-transformation facility partly is divided into HSPA side and LTE side.The HSPA side has the hierarchy of HSPA standard, is respectively PDCP layer, rlc layer, MAC layer etc. from top to bottom, the HSPA standard of all following such as mutual between function of each layer and operation principle and each layer.The LTE side then has the hierarchy of LTE standard, is respectively PDCP layer, rlc layer, MAC layer etc. from top to bottom, the LTE standard of all following such as mutual between function of each layer and operation principle and each layer.Between HSPA side and LTE side, with the interface that has data interaction.Special, for the present invention, there is the interface of data interaction between the PDCP layer of HSPA side and the rlc layer of LTE side, the PDCP layer of HSPA can send PDCPPDU to the rlc layer of LTE, and the rlc layer of LTE also can send PDCP PDU to the PDCP of HSPA layer.Same, there is the interface of data interaction between the PDCP layer of LTE side and the rlc layer of HSPA side, the PDCP layer of LTE can send PDCP PDU to the rlc layer of HSPA, and the rlc layer of HSPA also can be to the PDCP of LTE layer transmission PDCP PDU.

Scheme one, be anchor point with LTE eNB

Network configuration:, can use two kinds of wireless access technologys of LTE and HSPA to carry out transfer of data simultaneously for the UE that relates in the embodiment of the invention.So, UE LTE and HSPA with region covered in, can polymerization LTE and the carrier wave of HSPA, promptly obtain the data transport service of LTE sub-district and HSPA sub-district simultaneously.The deployment of network is as shown in Figure 5, wherein, and the sub-district that Cell1 provides for LTE eNB; The sub-district that Cell 2 provides for HSPA NodeB (being HSPA RNC); UE is in the overlay area of two sub-districts simultaneously, has interface between LTE eNB and the HSPA RNC, can be used for carrying out transfer of data.Because anchor point is LTE eNB, so in this scheme only LTE eNB be connected with core net, the RNC of HSPA is not connected with core net with NodeB.

If UE uses the carrier wave of LTE and HSPA to carry out transfer of data simultaneously; Be under the situation of anchor point with LTE eNB; The downlink service data that comes from core net all at first arrives LTE eNB; These downlink datas can a part send to UE through eNB, and another part at first sends to HSPA RNC through the interface of eNB and HSPA RNC by eNB, and the NodeB through HSPA sends to UE again.Split into two parts and produce two PDCP PDU after the processing of LTE eNB with part PDCP SDU process LTE PDCP process, be sent to the rlc layer of HSPA RNC and the rlc layer of LTE eNB respectively.Wherein, the PDCP PDU that is sent to HSPA RNC will transmit through the data-interface between HSPA RNC and the LTE eNB.Send to the PDCP PDU of rlc layer of rlc layer and the LTE eNB of HSPA RNC will be respectively through HSPA and LTE both sides rlc layer, MAC layer, physical layer and be sent to UE through physical channel.UE receives the downlink data from HSPA NodeB and LTE eNB through the physical channel of HSPA and LTE, and arrives the PDCP layer of the LTE side of UE through physical layer, MAC layer, the rlc layer of both sides respectively.The PDCP layer of the LTE side of UE merges the PDCP PDU from both sides, and the PDCP PDU after being combined through the PDCP process again handles, and sends to the upper strata at last.Wherein, the UE inside PDCP PDU that comes from the HSPA side will be transferred to the PDCP layer of LTE side through the data-interface between HSPA side and the LTE side.

Downlink data transmission flow process such as Fig. 6 of scheme one, explain as follows:

Step S601, downlink data packet arrive the PDCP layer of LTE eNB, and the PDCP layer carries out the processing of PDCP process;

Step S602, PDCP layer split packet, produce two PDCP PDU, arrive the rlc layer of HSPA and LTE respectively;

Step S603, two PDCP PDU send to the rlc layer of HSPA side and the LTE side of UE respectively through HSPA and LTE sub-district;

The PDCP layer of step S604, UE merges two PDCP PDU, and on be dealt into the upper strata.

If UE uses the carrier wave of LTE and HSPA to carry out transfer of data simultaneously; Be under the situation of anchor point with LTE eNB; The uplink business data of UE at first is sent to HSPA NodeB and LTEeNB respectively through the air interface of HSPA side and LTE side, and next the upstream data of HSPA and LTE both sides will be sent to the PDCP layer of LTE eNB respectively through physical layer, MAC layer, rlc layer separately.At the PDCP of LTE eNB layer, will be merged into a PDCP PDU from the PDCP PDU of both sides, be sent to the upper strata after handling through the PDCP process of PDCP layer again.Similar with the described descending process of preamble, the upstream data of UE will be split at the PDCP layer, produces two PDCP PDU, is sent to the rlc layer of HSPA side and LTE side respectively.PDCP layer for the eNB of LTE; Receive PDCP PDU from the rlc layer of the rlc layer of HSPA RNC and LTE eNB; The PDCP layer of eNB merges two PDCP PDU so, produces behind the PDCP PDU and is sent to the upper strata after the processing through LTE PDCP process.

Transmitting uplink data flow process such as Fig. 7 of scheme one, explain as follows:

Step S701, downlink data packet arrive the PDCP layer of UE LTE side, and the PDCP layer carries out the processing of PDCP process;

Step S702, PDCP layer split packet, produce two PDCP PDU, arrive the rlc layer of HSPA side and LTE side respectively;

Step S703, two PDCP PDU send to the rlc layer of LTE eNB and HSPA RNC respectively through HSPA and LTE sub-district;

The PDCP layer of step S704, LTE eNB merges two PDCP PDU, and on be dealt into the upper strata.

PDCP splits: at network side; The descender PDCP SDU that comes from the upper strata arrives the PDCP layer of LTE eNB, the operation that the PDCP layer carries out header-compressed (header compression), integrity protection (integrity protection) and encrypts PDCP layers such as (ciphering) this part PDCP SDU.Next this part PDCP SDU is split into two parts through splitting algorithm, and for these two parts distribute identical PDCP SN, every part will send to the rlc layer of HSPARNC and LTE eNB as a PDCP PDU respectively.

PDCP merges: the LTE side PDCP layer of UE is received two PDCP PDU from HSPA side and LTE side rlc layer, if the PDCP SN of two PDCP PDU is identical, then can the part of two PDCP PDU except that PDCP SN be merged, and becomes a PDCP PDU.Next the PDCP PDU after the PDCP layer of LTE side will be combined deciphers the operation of (deciphering), integrality verification (integrity verification), header decompression PDCP layers such as (header decompression), is sent to the upper strata at last.

Except the PDCP layer carries out mode that packet splits, can also realize joint transmission with the mode of packet delivery at the PDCP layer.At the PDCP of LTE eNB layer,, send to the rlc layer of HSPA side or LTE side from the part PDCP SDU on upper strata processing through the PDCP process.PDCP PDU to which side distribution can be decided by information such as quality of wireless channel and network load conditions.Concrete, can at first compare the quality of wireless channel of LTE and HSPA both sides, the PDCP layer sends to a quality of wireless channel side preferably with PDCP PDU.

Scheme two, be anchor point with HSPARNC

Network configuration; For the UE that relates in the embodiment of the invention, can use two kinds of wireless access technologys of LTE and HSPA to carry out transfer of data simultaneously.So, UE LTE and HSPA with region covered in, can polymerization LTE and the carrier wave of HSPA, promptly obtain the data transport service of LTE sub-district and HSPA sub-district simultaneously.The deployment of network is as shown in Figure 5, and wherein, Cell1 is the sub-district that HSPANodeB provides, the sub-district that Cell 2 provides for LTE eNB, and UE is in the overlay area of two sub-districts simultaneously, has interface between LTE eNB and the HSPARNC, can be used for carrying out transfer of data.Because anchor point is HSPARNC, so in this scheme only HSPA RNC be connected with core net, the eNB of LTE is not connected with core net.

If UE uses the carrier wave of LTE and HSPA to carry out transfer of data simultaneously; Be under the situation of anchor point with HSPA RNC; The downlink service data that comes from core net all at first arrives HSPA RNC; These downlink datas can a part send to UE through HSPA NodeB, and another part at first sends to eNB through the interface of eNB and HSPA RNC by HSPA RNC, sends to UE through eNB again.Split into two parts and produce two PDCP PDU after the processing of HSPA RNC with part PDCP SDU process HSPA PDCP process, be sent to the rlc layer of HSPA RNC and the rlc layer of LTE eNB respectively.Wherein, the PDCP PDU that is sent to LTE eNB will transmit through the data-interface between HSPA RNC and the LTE eNB.Send to the PDCP PDU of rlc layer of rlc layer and the LTE eNB of HSPA RNC will be respectively through HSPA and LTE both sides rlc layer, MAC layer, physical layer and be sent to UE through physical channel.UE receives the downlink data from HSPANodeB and LTE eNB through the physical channel of HSPA and LTE, and arrives the PDCP layer of the LTE side of UE through physical layer, MAC layer, the rlc layer of both sides respectively.The PDCP layer of the HSPA side of UE merges the PDCP PDU from both sides, and the PDCP PDU after being combined through the PDCP process again handles, and sends to the upper strata at last.Wherein, the UE inside PDCP PDU that comes from the LTE side will be transferred to the PDCP layer of HSPA side through the data-interface between HSPA side and the LTE side.In addition, the PDCP layer of HSPA does not possess safety function, just can be sent to the rlc layer of LTE after the safety function that the PDCP PDU that arrives LTE RLC from the PDCP layer of HSPA need pass through the LTE technology is handled.So; For this scheme; The rlc layer of LTE will possess encryption (ciphering), deciphering (deciphering) and to integrity protection (the integrity protection and integrity verification) function of chain of command (control plane) data, the rlc layer of LTE described here comprises the rlc layer of the LTE side of LTE eNB and UE.Wherein, Encrypting (ciphering), deciphering (deciphering) and integrity protection (integrity protection and integrity verification) function can be consistent with encryption, deciphering and integrity protection function in the PDCP layer standard of 3GPP LTE, also can be inconsistent.Concrete, for descending,, when LTE rlc layer (eNB end) is received the RLC SDU from the PDCP layer of HSPA RNC, at first carry out the processing of ciphering and integrity protection function, and then carry out other process of rlc layer at transmitting terminal.At receiving terminal, LTE rlc layer (UE end) carried out the processing of integrity verification and deciphering function to RLC SDU before HSPA PDCP layer sends PDCP PDU.

Downlink data transmission flow process such as Fig. 8 of scheme two, explain as follows:

Step S801, downlink data packet arrive the PDCP layer of HSPA RNC, and the PDCP layer carries out the processing of PDCP process;

Step S802, PDCP layer split packet, produce two PDCP PDU, arrive the rlc layer of HSPA RNC and LTE eNB respectively;

Step S803, two PDCP PDU send to the rlc layer of HSPA side and the LTE side of UE respectively through HSPA and LTE sub-district, the rlc layer of LTE side carries out the processing of safety function;

The PDCP layer of step S804, HSPA RNC merges two PDCP PDU, and on be dealt into the upper strata.

If UE uses the carrier wave of LTE and HSPA to carry out transfer of data simultaneously; Be under the situation of anchor point with HSPARNC; The uplink business data of UE at first is sent to HSPA NodeB and LTE eNB respectively through the air interface of HSPA side and LTE side, and next the upstream data of HSPA and LTE both sides will be sent to the PDCP layer of HSPA RNC respectively through physical layer, MAC layer, rlc layer separately.At the PDCP of HSPA RNC layer, will be merged into a PDCP PDU from the PDCP PDU of both sides, be sent to the upper strata after handling through the PDCP process of PDCP layer again.Similar with the described descending process of preamble, the upstream data of UE will be split at the PDCP of HSPA side layer, produces two PDCP PDU, is sent to the rlc layer of HSPA side and LTE side respectively.PDCP layer for HSPA RNC; Receive PDCPPDU from the rlc layer of the rlc layer of HSPA RNC and LTE eNB; The PDCP layer of HSPARNC merges two PDCPPDU so, produces behind the PDCP PDU and is sent to the upper strata after the processing through HSPA PDCP process.Similar with descending process, the rlc layer of LTE (rlc layer of LTE side that comprises rlc layer and the UE of eNB) also will have encryption (ciphering), deciphering (deciphering) and integrity protection (integrity protection and integrity verification) function to upstream data.Concrete, for up,, when LTE rlc layer (UE end) is received the RLC SDU from HSPA side PDCP layer, at first carry out the processing of ciphering and integrity protection function, and then carry out other process of rlc layer at transmitting terminal.At receiving terminal, LTE rlc layer (eNB end) carried out the processing of integrity verification and deciphering function to RLC SDU before the PDCP of HSPA RNC layer sends PDCP PDU.

Transmitting uplink data flow process such as Fig. 9 of scheme two, explain as follows:

Step S901, downlink data packet arrive the PDCP layer of UE HSPA side, and the PDCP layer carries out the processing of PDCP process;

Step S902, PDCP layer split packet, produce two PDCP PDU, arrive the rlc layer of HSPA side and LTE side respectively;

Step S903, two PDCP PDU send to the rlc layer of LTE eNB and HSPA RNC respectively through HSPA and LTE sub-district, the rlc layer of LTE eNB carries out the processing of safety function;

The PDCP layer of step S904, HSPA RNC merges two PDCP PDU, and on be dealt into the upper strata.

PDCP splits: at network side, the descender PDCP SDU that comes from the upper strata arrives the PDCP layer of HSPA RNC, and the PDCP layer carries out the operation of header-compressed PDCP layers such as (header compression) to this part PDCP SDU.Next this part PDCP SDU is split into two parts through splitting algorithm, and for these two parts distribute identical PDCP SN, every part will send to the rlc layer of HSPA RNC and LTE eNB as a PDCP PDU respectively.

PDCP merges: the PDCP layer of the HSPA side of UE is received two PDCPPDU from HSPA side and LTE side rlc layer; If the PDCP SN of two PDCP PDU is identical; Then can the part of two PDCP PDU except that PDCP SN be merged, become a PDCP PDU.Next the PDCP PDU after the PDCP layer of HSPA side will be combined carries out the operation of header decompression PDCP layers such as (header decompression), is sent to the upper strata at last.

Similar with scheme one, except the PDCP layer carries out mode that packet splits, can also realize joint transmission with the mode of packet delivery at the PDCP layer.At the PDCP of HSPA RNC layer,, send to the rlc layer of HSPA side or LTE side from the part PDCP SDU on upper strata processing through the PDCP process.PDCP PDU to which side distribution can be decided by information such as quality of wireless channel and network load conditions.Concrete, can at first compare the quality of wireless channel of LTE and HSPA both sides, the PDCP layer sends to a quality of wireless channel side preferably with PDCP PDU.

When the PDCP layer of LTE/HSPA split part PDCP SDU, with the ratio that decision splits, i.e. decision was sent to the size of the PDCP PDU of HSPA rlc layer and LTE rlc layer.The ratio that splits will be by decisions such as the quality of wireless channel of LTE and HSPA both sides and load informations.

According to these parameters, the ratio that the decision of PDCP layer splits, concrete grammar is following:

In the PDCP layer of LTE side or HSPA survey split, the better and lower side of load for channel quality was with being assigned with bigger fractionation ratio.Concrete, the size that splits back LTE and HSPA two parts PDCP SDU is:

$S_{\mathrm{LTE}}:S_{\mathrm{HSPA}}=(p_1{Q}_{\mathrm{LTE}}+\frac{p_2}{L_{\mathrm{LTE}}}):(p_1{Q}_{\mathrm{HSPA}}+\frac{p_2}{L_{\mathrm{HSPA}}})$

Wherein, S _LTEAnd S _HSPABe respectively the size of distributing to the part PDCP SDU of LTE side and HSPA side, Q _LTEEAnd Q _HSPABe respectively the quality of wireless channel of LTE side and HSPA side, L _LTEAnd L _HSPABe respectively the load of LTE and HSPA base station, P ₁And P ₂Be respectively quality of wireless channel and the shared weight of offered load when calculating the fractionation ratio.Q _LTEAnd Q _HSPABe through wireless channel being measured the result who obtains, L _LTEAnd L _HSPACan be found out that by this expression formula the value of quality of wireless channel is big more, offered load is more little, then can obtain bigger data allocations ratio.

Foregoing is about a kind of joint transmission mode between HSPA and the LTE system, except that these two kinds of systems, can also be applied to the scene of other system combined transmission, is that example describes with following scene.

The scene of 1LTE TDD system and the system combined transmission of LTE FDD.

UE possesses the TDD that supports LTE simultaneously and the ability of two kinds of access technologies of FDD, and the eNB of LTE TDD and LTE FDD disposes simultaneously, and UE carries out data transmit-receive with TDD mode and FDD mode respectively on TDD carrier wave and FDD carrier wave.This scene can have two kinds of schemes equally, is anchor point with TDD eNB promptly and is anchor point with FDD eNB.

Scheme one: TDD eNB is an anchor point.For the UE that carries out under TDD eNB and the FDD eNB joint transmission, downlink data all arrives TDD eNB through core net, carries out the fractionation or the distribution of packet at the PDCP of TDD eNB layer, arrive TDD eNB with (or) rlc layer of FDD eNB.The fractured operation of packet promptly is that the part PDCP SDU that preamble was described is split into two parts; Constitute two PDCP PDU; Send to TDD eNB and FDD eNB respectively, the ratio of fractionation will be by the decision of information such as the quality of wireless channel of TDD eNB and FDD eNB both sides and offered load.The distribution of packet promptly is that the PDCP layer of TDD eNB sends to the rlc layer of TDD eNB or the rlc layer of FDD eNB with this PDCP PDU.Concrete fractionation is consistent with the description of preamble HSPA and LTE joint transmission with distribution method.

Scheme two: FDD eNB is an anchor point.For the UE that carries out under TDD eNB and the FDD eNB joint transmission, downlink data all arrives FDD eNB through core net, carries out the fractionation or the distribution of packet at the PDCP of FDD eNB layer, arrive TDD eNB with (or) rlc layer of FDD eNB.

If the PDCP layer of transmitting terminal splits part PDCP SDU, then how receiving terminal will merge the PDCP PDU with identical PDCP SN, and concrete merging mode such as preamble are said.

The scene of home eNB (family's evolved base station) joint transmission of the home NodeB (Home eNodeB) of 2UMTS and LTE.

UE possesses the ability of supporting UMTS and two kinds of access technologies of LTE simultaneously, and the home NodeB of UMTS and the eNB of LTE dispose simultaneously, and UE carries out data transmit-receive with the working method of UMTS and the working method of LTE respectively on UMTS carrier wave and LTE carrier wave.Consistent with the described joint transmission of preamble, this scene also can have two kinds of schemes, is anchor point with UMTS home NodeB promptly and is anchor point with LTE home eNB, also will carry out the fractionation or the distribution of packet at the PDCP layer.If transmitting terminal splits part PDCP SDU, then then carry out the union operation of PDCP PDU at receiving terminal.

Based on same inventive concept, the embodiment of the invention also provides a kind of network equipment, and its structural representation is shown in figure 10, comprising:

First receiver module 1001 is used to receive the downlink service data from core net;

First sending module 1002, other the different network equipments of access technology that are used to unite with self adopting are sent to user equipment (UE) with downlink service data.

Based on same inventive concept, the embodiment of the invention also provides a kind of user equipment (UE), and its structural representation is shown in figure 11, comprising:

Second receiver module 1101 is used to receive the downlink service data that first network equipment and second network equipment send respectively, and wherein, first network equipment adopts first access technology, and second network equipment adopts second access technology;

Second sending module 1102 is used for being sent to the upper strata after the packet data polymerized agreement PDCP process processing of downlink service data process.

Based on same inventive concept, the embodiment of the invention also provides a kind of user equipment (UE), and its structural representation is shown in figure 12, comprising:

Processing module 1201 is used to handle uplink business data to be sent;

The 3rd sending module 1202 is used for utilizing simultaneously first network equipment that adopts first access technology and second network equipment that adopts second access technology to unite the uplink business data that sends after handling.

Based on same inventive concept, the embodiment of the invention also provides a kind of network equipment, and its structural representation is shown in figure 13, comprising:

The 3rd receiver module 1301; Be used to receive first uplink business data that user equipment (UE) sends; And from second network equipment, obtain second uplink business data that second network equipment receives; Self adopt first access technology, second network equipment adopts second access technology, and has data transmission interface between self and second network equipment;

Merge module 1302, be sent to the upper strata after being used for first uplink business data and second uplink business data merged processing.

Based on same inventive concept, the embodiment of the invention also provides a kind of data transmission system, and its structural representation is shown in figure 14, comprises first network equipment 1401, second network equipment 1402 and user equipment (UE) 1403:

First network equipment 1401 is used to receive the downlink service data from core net, and first network equipment 1401 adopts first access technology; Associating is sent to UE1403 with second network equipment 1402 that adopts second access technology with downlink service data;

Second network equipment 1402 is used for associating and with first network equipment 1401 downlink service data is sent to UE 1403;

UE 1403, are used to receive downlink service data.

Based on same inventive concept, the embodiment of the invention also provides a kind of data transmission system, and its structural representation is shown in figure 14, comprises first network equipment 1401, second network equipment 1402 and user equipment (UE) 1403:

UE 1403, are used to handle uplink business data to be sent; Utilize and adopt first network equipment 1401 of first access technology to unite the uplink business data that sends after handling with second network equipment 1402 that adopts second access technology;

First network equipment 1401 is used for uniting the uplink business data that sends after handling with second network equipment 1402 that adopts second access technology;

Second network equipment 1402 is used for uniting the uplink business data that sends after handling with first network equipment 1401 that adopts first access technology.

From above description, can find out that the present invention has realized following technique effect:

In embodiments of the present invention, adopt the network equipment of different access technologies to unite downlink business is sent to UE, promptly; Can utilize dissimilar carrier waves to carry out transfer of data simultaneously; Enlarge the bandwidth of operation of UE, increase transmission rate, the wireless transmission that satisfies high request is professional; Not only can improve the throughput of user terminal, can also make network obtain effect of load balance.

Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is merely 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 changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (29)

1. a data transmission method is characterized in that, comprising:

First network equipment receives the downlink service data from core net, and said first network equipment adopts first access technology;

Said first network equipment associating is sent to user equipment (UE) with second network equipment that adopts second access technology with said downlink service data.

2. method according to claim 1 is characterized in that, said first network equipment associating is sent to user equipment (UE) with self adopting second network equipment of different access technologies with said downlink service data, comprising:

When being anchor point with said first network equipment; Said first network equipment is split as two parts with said downlink service data; First's downlink service data is sent to said UE; The second portion downlink service data is sent to said second network equipment, said second portion downlink service data is sent to said UE by said second network equipment; Wherein, there is data transmission interface between said first network equipment and second network equipment.

3. method according to claim 2; It is characterized in that; When said first access technology is Long Term Evolution LTE, when said second access technology was high speed downlink packet access technology HSPA, said first network equipment was the LTE base station eNB; Said second network equipment is the HSPA radio network controller (RNC); Said downlink service data is packet data polymerized protocol service data cell PDCP SDU, and said LTE eNB is split as PDCP SDU of first and second portion PDCP SDU with said PDCP SDU, and constitutes the protocol Data Unit PDCP PDU of packet data polymerized agreement respectively; Be PDCP PDU of first and second portion PDCP PDU, be sent to the rlc layer of self radio controlling links rlc layer and said HSPA RNC respectively; Said LTE eNB is sent to said UE with the said PDCP PDU of first, and said HSPA RNC is sent to said UE with second portion PDCP PDU;

Perhaps

When said first access technology is HSPA, when said second access technology was LTE, said first network equipment was HSPA RNC; Said second network equipment is LTE eNB; Said downlink service data is PDCP SDU, and said HSPA RNC is split as PDCP SDU of first and second portion PDCP SDU with said PDCP SDU, and constitutes PDCP PDU respectively; Be PDCP PDU of first and second portion PDCP PDU, be sent to rlc layer of self and the rlc layer of said LTE eNB respectively; Said HSPA RNC is sent to said UE with the said PDCP PDU of first, and said LTE eNB is sent to said UE with part the 2nd PDCP PDU.

4. method according to claim 3 is characterized in that, said LTE eNB is split as a PDCP SDU and the 2nd PDCP SDU with said PDCP SDU, comprising:

Said LTE eNB carries out the operation of PDCP layer to said PDCP SDU, and said operation comprises header-compressed, integrity protection and encryption;

The PDCP SDU that will pass through the operation of said PDCP layer is split as a said PDCP SDU and said second portion PDCP SDU according to preset fractionation algorithm, and is that the said PDCP SDU of first distributes identical PDCP sequence number SN with said second portion PDCP SDU.

5. according to each described method of claim 2-4; It is characterized in that; Said first network equipment is split as two parts with said downlink service data, comprising: said first network equipment is according to the quality of wireless channel of said first access technology network corresponding with said second access technology and the fractionation ratio that load information is confirmed said downlink service data.

6. method according to claim 1 is characterized in that, said first network equipment associating is sent to user equipment (UE) with self adopting second network equipment of different access technologies with said downlink service data, comprising:

When being anchor point with said first network equipment; Said first network equipment is sent to said UE with said downlink service data; Perhaps said downlink service data is sent to said second network equipment, said downlink service data is sent to said UE by said second network equipment; Wherein, there is data transmission interface between said first network equipment and second network equipment.

7. method according to claim 6 is characterized in that, when said first access technology is Long Term Evolution LTE; When said second access technology was high speed downlink packet access technology HSPA, said first network equipment was the LTE base station eNB, and said second network equipment is the HSPA radio network controller (RNC); Said downlink service data is packet data polymerized protocol service data cell PDCP SDU; Said LTE eNB does not split said PDCP SDU, handles the back through the PDCP process of LTE and constitutes PDCP PDU, and be sent to the rlc layer of LTE eNB; By LTE eNB packet is sent to UE; Perhaps, said LTE eNB is sent to said UE with the rlc layer that said PDCP PDU is sent to HSPA RNC by said HSPA RNC;

Perhaps

When said first access technology is HSPA, when said second access technology was LTE, said first network equipment was HSPA RNC; Said second network equipment is LTE eNB, and said downlink service data is PDCP SDU, and said HSPA RNC does not split said PDCP SDU; Handle the back through the PDCP process of HSPA and constitute PDCP PDU, and be sent to the rlc layer of HSPA RNC, packet is sent to UE by HSPA RNC; Perhaps; Said HSPA RNC is sent to the rlc layer of LTE eNB with said PDCP SDU, is sent to said UE by said LTE eNB, and the rlc layer of at this moment said LTE eNB possesses to be encrypted and the function of integrity protection.

8. according to claim 1,2,6 or 7 described methods, it is characterized in that it is one of following that said first access technology and second access technology comprise:

LTE、HSPA；

LTE TDD, LTE FDD;

Universal mobile communications technology UMTS, LTE.

9. a data transmission method is characterized in that, comprising:

User equipment (UE) receives the downlink service data that first network equipment and second network equipment send respectively, and wherein, said first network equipment adopts first access technology, and said second network equipment adopts second access technology;

Said UE is sent to the upper strata after said downlink service data is handled through packet data polymerized agreement PDCP process.

10. method according to claim 9 is characterized in that, said UE is sent to the upper strata after said downlink service data is handled through the PDCP process, comprising:

Said UE utilizes first processing module of self to receive first's downlink service data that said first network equipment sends; Utilize second processing module of self to receive the second portion downlink service data that said second network equipment sends; Wherein, Dispose first processing module that is complementary with said first access technology among the said UE; And with second processing module that said second access technology is complementary, wherein, have data transmission interface between said first processing module and said second processing module;

Said UE merges processing with said first downlink service data and said second portion downlink service data, and carries out the processing of PDCP process, is sent to the upper strata.

11. method according to claim 10 is characterized in that, said UE merges processing with said first downlink service data and said second portion downlink service data, comprising:

When being anchor point with said first network equipment, said UE utilizes said first processing module that said first downlink service data and said second portion downlink service data are merged.

12. method according to claim 11 is characterized in that, said UE merges processing with said first downlink service data and said second portion downlink service data, comprising:

When said first access technology is LTE, when said second access technology was HSPA, said first network equipment was LTE eNB; Said second network equipment is HSPA RNC; Said downlink service data is PDCP PDU, and said first processing module is the LTE module, and said second processing module is the HSPA module; Said UE utilizes said LTE module to receive the PDCP PDU of first; And utilize said LTE module to receive second portion PDCP PDU from said HSPA module, and search PDCP PDU of first and second portion PDCP PDU with identical PDCP sequence number SN, will merge except that the part the said PDCP SN; And carry out the operation of PDCP process, said operation comprises that deciphering, integrality are verified, header decompression;

Perhaps

When said first access technology is HSPA, when said second access technology was LTE, said first network equipment was HSPA RNC; Said second network equipment is LTE eNB, and said downlink service data is PDCP PDU, and said first processing module is the HSPA module; Said second processing module is the LTE module, and said UE utilizes said HSPA module to receive the PDCP PDU of first, and utilizes said HSPA module to receive second portion PDCP PDU from said LTE module; Search PDCP PDU of first and second portion PDCP PDU with identical PDCP sequence number SN; To merge except that the part the said PDCP SN, and carry out the operation of PDCP process, said operation comprises header decompression; Wherein, said LTE module is verified the rlc layer that operates in said LTE module to the deciphering of data and integrality and is carried out.

13. method according to claim 9 is characterized in that, said UE is sent to the upper strata after said downlink service data is handled through the PDCP process, comprising:

Said UE utilizes first processing module of self to receive first's downlink service data that said first network equipment sends; Utilize second processing module of self to receive the second portion downlink service data that said second network equipment sends; Wherein, Dispose first processing module that is complementary with said first access technology among the said UE; And with second processing module that said second access technology is complementary, wherein, have data transmission interface between said first processing module and said second processing module;

Said UE carries out the processing of PDCP process with said first downlink service data and said second portion downlink service data, and is sent to the upper strata respectively.

14. method according to claim 13 is characterized in that, said UE carries out the processing of PDCP process with said first downlink service data and said second portion downlink service data, and is sent to the upper strata respectively, comprising:

When being anchor point with said first network equipment, said UE utilizes said first processing module to be sent to the upper strata through said first downlink service data and the said second portion downlink service data after the PDCP process is handled.

15. method according to claim 14 is characterized in that, said UE carries out the processing of PDCP process with said first downlink service data and said second portion downlink service data, comprising:

When said first access technology is Long Term Evolution LTE; When said second access technology is high speed downlink packet access technology HSPA; Said first network equipment is the LTE base station eNB, and said second network equipment is the HSPA radio network controller (RNC), and said downlink service data is the protocol Data Unit part PDCP PDU of packet data polymerized agreement; Said first processing module is the LTE module; Said second processing module is the HSPA module, and said UE utilizes said LTE module to receive the PDCP PDU of first, and utilizes said LTE module to receive second portion PDCP PDU from said HSPA module; Said PDCP PDU of first and said second portion PDCP PDU are carried out the operation of PDCP process, and said operation comprises that deciphering, integrality are verified, header decompression;

Perhaps

When said first access technology is HSPA, when said second access technology was LTE, said first network equipment was HSPA RNC; Said second network equipment is LTE eNB; Said downlink service data is PDCP PDU, and said first processing module is the HSPA module, and said second processing module is the LTE module; Said UE utilizes said HSPA module to receive the PDCP PDU of first; And utilize said HSPA module to receive second portion PDCP PDU from said LTE module, and said PDCP PDU of first and said second portion PDCP PDU are carried out the operation of PDCP process, said operation comprises header decompression; Wherein, said LTE module is verified the rlc layer that operates in said LTE module to the deciphering of data and integrality and is carried out.

16., it is characterized in that it is one of following that said first access technology and second access technology comprise according to each described method of claim 9-15:

LTE、HSPA；

LTE TDD, LTE FDD;

Universal mobile communications technology UMTS, LTE.

17. a data transmission method is characterized in that, comprising:

User equipment (UE) is handled uplink business data to be sent;

Said UE utilizes first network equipment that adopts first access technology and second network equipment that adopts second access technology to unite the uplink business data that sends after handling simultaneously.

18. method according to claim 17 is characterized in that, said user equipment (UE) is handled uplink business data to be sent, comprising:

When being anchor point with said first network equipment; Said UE utilizes first processing module of self that said uplink business data is split as two parts; First's uplink business data is sent to said first network equipment, the second portion uplink business data is sent to said second network equipment, wherein; Dispose first processing module that is complementary with said first access technology among the said UE; And with second processing module that said second access technology is complementary, wherein, have data transmission interface between said first processing module and said second processing module.

19. method according to claim 18; It is characterized in that; When said first access technology is Long Term Evolution LTE, when said second access technology was high speed downlink packet access technology HSPA, said first network equipment was the LTE base station eNB; Said second network equipment is the HSPA radio network controller (RNC); Said uplink business data is packet data polymerized protocol service data cell PDCP SDU, and said first processing module is the LTE module, and said second processing module is the HSPA module; Said UE utilizes said LTE module that said PDCP SDU is split as PDCP SDU of first and second portion PDCP SDU; And constitute the protocol Data Unit PDCP PDU of packet data polymerized agreement respectively, promptly the PDCP of first PDU and second portion PDCP PDU are sent to the Radio Link control rlc layer of said LTE eNB and the rlc layer of said HSPARNC respectively;

Perhaps

When said first access technology is HSPA, when said second access technology was LTE, said first network equipment was HSPA RNC; Said second network equipment is LTE eNB; Said downlink service data is PDCP SDU, and said first processing module is the HSPA module, and said second processing module is the LTE module; Said UE utilizes said HSPA module that said PDCP SDU is split as PDCP SDU of first and second portion PDCP SDU; And constitute PDCP PDU respectively, promptly the PDCP of first PDU and second portion PDCP PDU are sent to the rlc layer of HSPA RNC and the rlc layer of said LTE eNB respectively.

20. method according to claim 19 is characterized in that, said UE is sent to the rlc layer of HSPARNC and the rlc layer of said LTE eNB respectively with said PDCP SDU of first and second portion PDCP SDU, comprising:

Said UE confirms preferably to send the network equipment of said uplink business data to it according to the quality of wireless channel and the load information of said first access technology network corresponding with said second access technology.

21., it is characterized in that it is one of following that said first access technology and second access technology comprise according to each described method of claim 14-20:

LTE、HSPA；

LTE TDD, LTE FDD;

Universal mobile communications technology UMTS, LTE.

22. a data transmission method is characterized in that, comprising:

First network equipment receives first uplink business data that user equipment (UE) sends; And from second network equipment, obtain second uplink business data that said second network equipment receives; Said first network equipment adopts first access technology; Said second network equipment adopts second access technology, and has data transmission interface between said first network equipment and second network equipment;

Said first network equipment is sent to the upper strata after said first uplink business data and said second uplink business data are merged processing.

23. method according to claim 22; It is characterized in that; When said first access technology is Long Term Evolution LTE, when said second access technology was high speed downlink packet access technology HSPA, said first network equipment was the LTE base station eNB; Said second network equipment is the HSPA radio network controller (RNC); Said first uplink business data and said second uplink business data are respectively PDCP PDU of first and second portion PDCP PDU, and said LTE eNB therefrom searches PDCP PDU of first and the second portion PDCP PDU with identical PDCP sequence number SN, will merge except that the part the said PDCP SN; And carry out the operation of PDCP process, said operation comprises that deciphering, integrality are verified, header decompression;

Perhaps

When said first access technology is HSPA; When said second access technology is LTE; Said first network equipment is HSPA RNC; Said second network equipment is LTE eNB, and said first uplink business data and said second uplink business data are respectively PDCP PDU of first and second portion PDCP PDU, and said HSPA RNC therefrom searches PDCP PDU of first and the second portion PDCP PDU with identical PDCP SN; To merge except that the part the said PDCP SN; And carry out the operation of PDCP process, and said operation comprises header decompression, said LTE eNB one side will be carried out at the rlc layer of LTE eNB the deciphering and the integrality verification operation of data.

24. a network equipment is characterized in that, comprising:

First receiver module is used to receive the downlink service data from core net;

First sending module, other the different network equipments of access technology that are used to unite with self adopting are sent to user equipment (UE) with said downlink service data.

25. a user equipment (UE) is characterized in that, comprising:

Second receiver module is used to receive the downlink service data that first network equipment and second network equipment send respectively, and wherein, said first network equipment adopts first access technology, and said second network equipment adopts second access technology;

Second sending module is used for being sent to the upper strata after the packet data polymerized agreement PDCP process processing of said downlink service data process.

26. a user equipment (UE) is characterized in that, comprising:

Processing module is used to handle uplink business data to be sent;

The 3rd sending module is used for utilizing simultaneously first network equipment that adopts first access technology and second network equipment that adopts second access technology to unite the uplink business data that sends after handling.

27. a network equipment is characterized in that, comprising:

The 3rd receiver module; Be used to receive first uplink business data that user equipment (UE) sends; And from second network equipment, obtain second uplink business data that said second network equipment receives; Self adopt first access technology, said second network equipment adopts second access technology, and has data transmission interface between self and second network equipment;

Merge module, be sent to the upper strata after being used for said first uplink business data and said second uplink business data merged processing.

28. a data transmission system is characterized in that, comprises first network equipment, second network equipment and user equipment (UE):

Said first network equipment is used to receive the downlink service data from core net, and said first network equipment adopts first access technology; Associating is sent to UE with second network equipment that adopts second access technology with said downlink service data;

Said second network equipment is used for associating and with said first network equipment said downlink service data is sent to said UE;

Said UE is used to receive said downlink service data.

29. a data transmission system is characterized in that, comprises first network equipment, second network equipment and user equipment (UE):

Said UE is used to handle uplink business data to be sent; Utilize first network equipment that adopts first access technology and second network equipment that adopts second access technology to unite the uplink business data that sends after handling;

Said first network equipment is used for uniting the uplink business data that sends after handling with second network equipment that adopts second access technology;

Said second network equipment is used for uniting the uplink business data that sends after handling with first network equipment that adopts first access technology.

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