CN104170464A

CN104170464A - Data transmission method and access network device

Info

Publication number: CN104170464A
Application number: CN201380001442.1A
Authority: CN
Inventors: 赵超; 蔺波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-02-07
Filing date: 2013-02-07
Publication date: 2014-11-26
Also published as: WO2014121503A1

Abstract

A data transmission method and an access network device are disclosed in the present invention. The present invention relates to the field of wireless communications, and is capable of improving communication quality of service of UE. The method is applied to the UE switching to a target access network device and after a handover failure, and mainly comprises: obtaining the information of the source access network device or the target access network device by a reestablishment access network device; sending a data forward indication corresponding to the UE to the source access network device or the target access network device according to the information of the source access network device or the target access network device; receiving the data of UE sent by the source access network device or the target access network device according to the data forward indication; alternatively, receiving the data of UE sent by the target access network device informed by the source access network device according to the data forward indication. The embodiments of the present invention are mainly applied to the procedure of UE handover and a wireless access reestablishment.

Description

Data transmission method and access network device

A kind of data transmission method and access network equipment

Technical field

The present invention relates to wireless communication field, more particularly to a kind of data transmission method and access network equipment.Background technology

In the wireless network, due to user equipment（User Equipment, UE movement), serving cell signal quality can not meet the reasons such as the most optimum distribution of resources needs of communication service quality demand or network side, and the source access network equipment where UE is notified that UE is switched to another Target cell for meeting service request.

It is specially by the UE processes for being switched to Target cell：Source access network equipment is UE selection target cells, and order UE is switched to the Target cell specified；UE is after the switching command that source access network equipment is sent is received, interrupt in the ongoing business in cell-of-origin, at the same time, for the continuity of the high-quality and data that ensure UE communication services, the UE deposited of Slow uplink and downlink data can be also sent to target access network equipment by source access network equipment, to continue the business processing not completed in cell-of-origin in Target cell；According to the tupe of conventional access network equipment, the data that source access network equipment is transmitted to target access network equipment can immediately be deleted by source access network equipment.

In the prior art, when UE handoff failures, fail to set up wireless heterogeneous networks with target access network equipment（Radio Resource Control, RRC) connection when, UE can select one rebuild cell initiate RRC connection re-establishment processes, and with rebuild cell set up after RRC be connected reconstruction cell in start communication service. During progress RRC is re-established after above-mentioned UE handoff failures, inventor has found that at least there are the following problems in the prior art：When the UE reconstruction cells selected are other cells outside Target cell, in cell is rebuild, because the script UE that Slow is deposited on the access network equipment of source uplink and downlink Shuo Ju Lost lose, prevent rebuilding cell from the business processing for continuing not completing in cell-of-origin, cause poor service quality.

The content of the invention

Embodiments of the invention provide a kind of data transmission method and access network equipment, to improve UE telecommunication service quality.

To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：

The first aspect of the present invention is there is provided a kind of data transmission method, and when source, access network equipment instruction user equipment UE is switched to after target access network equipment, and the UE handoff failures, when access network equipment is rebuild in access, including：

It is described to rebuild the information that access network equipment obtains the source access network equipment or the target access network equipment；

According to the source access network equipment or the information of the target access network equipment, send the corresponding data forwardings of the UE to the source access network equipment or the target access network equipment and indicate；

Receive the data for the UE that the source access network equipment or the target access network equipment indicate to send according to the data forwarding；Or, receive the data for the UE that the source access network equipment indicates to notify the target access network equipment to send according to the data forwarding.

With reference to the first aspect of the present invention, in the first possible implementation of first aspect, the data of the UE are sent to after the target access network equipment by the source access network equipment, are stored in the source access network equipment, and methods described is specifically included： It is described to rebuild the information that access network equipment obtains the source access network equipment；

According to the information of the source access network equipment, send the corresponding data forwardings of the UE to the source access network equipment and indicate；

Receive the data for its UE preserved that the source access network equipment indicates to send according to the data forwarding.

With reference to the first aspect of the present invention, in second of possible implementation of first aspect, the data of the UE are sent to after the target access network equipment by the source access network equipment and deleted out of described source access network equipment, and, methods described is specifically included：

It is described to rebuild the information that access network equipment obtains the source access network equipment；

The information that access network equipment is rebuild according to the source access network equipment, sends the corresponding data forwardings of the UE to the source access network equipment and indicates；

Receive the data for the UE that the source access network equipment indicates to notify the target access network equipment to send according to the data forwarding.

With reference to the first possible implementation or second of possible implementation of the first aspect of the present invention or first aspect, first aspect in the third possible implementation, the information for rebuilding the access network equipment acquisition source access network equipment, including：

The access network equipment of rebuilding receives the wireless connection reconstruction message that the UE is sent, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment；

The information of the source access network equipment is obtained from wireless connection reconstruction message.

With reference to the first aspect of the present invention, in the 4th kind of possible implementation of first aspect, the data of the UE are sent to the target access network equipment by the source access network equipment, and, methods described is specifically included：

It is described to rebuild the information that access network equipment obtains the target access network equipment； According to the information of the target access network equipment, send described to the target access network equipment

The corresponding data forwardings of UE are indicated；

Receive the data for the UE that the target access network equipment indicates to send according to the data forwarding.

With reference to the 4th kind of possible implementation of the first aspect of the present invention, in the 5th kind of possible implementation of first aspect, the information for rebuilding access network equipment acquisition target access network equipment, including：

The access network equipment of rebuilding receives the radio link failure report that the UE is sent, wherein the radio link failure report includes the information of the target access network equipment；

The information of the target access network equipment is obtained from the radio link failure report.

With reference to the 4th kind of possible implementation of the first aspect of the present invention, in the 6th kind of possible implementation of first aspect, the information for rebuilding access network equipment acquisition target access network equipment, including：

According to the information of the source access network equipment, send data forwarding to the source access network equipment and indicate；

Receive the source access network equipment and indicate that the data forwarding sent changes message according to the data forwarding, the data forwarding conversion message includes the information of the target access network equipment；

The information of the target access network equipment is obtained from data forwarding conversion message.

With reference to the first aspect of the present invention or first aspect the first one of to the 6th kind of possible implementation, in the 7th kind of possible implementation of first aspect, the data forwarding is designated as Radio Link Failure instruction. With reference to the first aspect of the present invention or first aspect the first one of to the 6th kind of possible implementation, in the 8th kind of possible implementation of first aspect, the data forwarding indicates to include：The mark of the UE.

With reference to the 8th kind of possible implementation of the first aspect of the present invention, in the 9th kind of possible implementation of first aspect, the data forwarding indicates also to include：Rebuild cell ID.

With reference to the 8th kind of the first aspect of the present invention or the 9th kind of possible implementation, in the tenth kind of possible implementation of first aspect, the data forwarding indicates also to include：The RAB E-RAB information of evolved universal terrestrial radio access network.

The second aspect of the present invention there is provided a kind of data transmission method, including：

Source access network equipment sends switching command to user equipment (UE), and the switching command includes the information of Target cell；

The Slow UE deposited data are sent to the target access network equipment where the Target cell by the source access network equipment；

After the UE handoff failures, when access network equipment is rebuild in access, receive the data forwarding for rebuilding access network equipment transmission and indicate；

When the source access network equipment preserves the data for the U E for being sent to the target access network equipment, indicated according to the data forwarding, the data of the UE are sent to the reconstruction access network equipment；Or,

When the source access network equipment does not preserve the data for the UE for being sent to the target access network equipment, indicated according to the data forwarding, notify the target access network equipment to send the data of the UE to the reconstruction access network equipment；Or,

Indicated according to the data forwarding, the information of the target access network equipment sent to the reconstruction access network equipment, so as to the reconstruction access network equipment according to the information of the target access network equipment from The target access network equipment obtains the data of the UE.

With reference to the second aspect of the present invention, in the first possible implementation of second aspect, after the target access network equipment that is sent to where the Target cell of data for the UE that the source access network equipment deposits Slow, in addition to：

Preserve the data for the UE for being sent to the target access network equipment.

With reference to the first possible implementation of the second aspect of the present invention, in second of possible implementation of second aspect, this method also includes：

When the data that the source access network equipment preserves the UE reach preset time, preserved UE data are deleted.

With reference to the first possible implementation of the second aspect of the present invention, in the third possible implementation of second aspect, this method also includes：

When the source access network equipment receives the context release message of the UE, preserved UE data are deleted.

With reference to the second aspect of the present invention, in the 4th kind of possible implementation of second aspect, the source access network equipment notifies the target access network equipment to send the data of the UE to the reconstruction access network equipment by data forwarding request lmessage, wherein, the data forwarding request lmessage includes the mark of the UE.

With reference to the 4th kind of possible implementation of the second aspect of the present invention, in the 5th kind of possible implementation of second aspect, the data forwarding request lmessage also includes rebuilding cell ID.

With reference to the 4th kind of the second aspect of the present invention or the 5th kind of possible implementation, in the 6th kind of possible implementation of second aspect, the data forwarding request lmessage also includes：The RAB E-RAB information of evolved universal terrestrial radio access network.

With reference to the second aspect of the present invention, in the 7th kind of possible implementation of second aspect, institute State source access network equipment and the information that message sends the target access network equipment to the reconstruction access network equipment is changed by data forwarding.

With reference to the second aspect of the present invention or second aspect the first one of to the 6th kind of possible implementation, in the 7th kind of possible implementation of second aspect, the data forwarding indicates to include：The mark of the UE.

With reference to the 7th kind of possible implementation of the second aspect of the present invention, in the 8th kind of possible implementation of second aspect, the data forwarding indicates also to include：Rebuild cell ID.

With reference to the 7th kind of the second aspect of the present invention or the 8th kind of possible implementation, in the 9th kind of possible implementation of second aspect, the data forwarding indicates also to include：The RAB E-RAB information of evolved universal terrestrial radio access network.

The third aspect of the present invention there is provided a kind of data transmission method, including：

When source access network equipment instruction user equipment UE is switched to target access network equipment, the target access network equipment receives the data for the UE that the source access network equipment Slow is deposited；

When the UE handoff failures and access reconstruction access network equipment, the target access network equipment receives the data forwarding request lmessage that the data forwarding for rebuilding access network equipment transmission indicated or received the source access network equipment transmission；

Indicated according to the data forwarding or the data forwarding request lmessage, received UE data are sent to the reconstruction access network equipment.

With reference to the third aspect of the present invention, in the first possible implementation of the third aspect, the data forwarding request lmessage includes the mark of the UE.

With reference to the first possible implementation of third aspect present invention, in second of possible implementation of the third aspect, the data forwarding request lmessage also includes rebuilding cell ID.

With reference to the first or second of possible implementation of third aspect present invention, in the third aspect The third possible implementation in, the data forwarding request lmessage also includes：The wireless access 7 of evolved universal terrestrial radio access network carries E-RAB information.

With reference to the third aspect of the present invention or the third aspect the first one of to the third possible implementation, in the 4th kind of possible implementation, the data forwarding indicates to include：The mark of the UE.

With reference to the 4th kind of possible implementation of the third aspect of the present invention, in the 5th kind of possible implementation of the third aspect, the data forwarding indicates also to include：Rebuild cell ID.

With reference to the 4th kind of the third aspect of the present invention or the 5th kind of possible implementation, in the 6th kind of possible implementation of the third aspect, the data forwarding indicates also to include：The RAB E-RAB information of evolved universal terrestrial radio access network.

The fourth aspect of the present invention is there is provided a kind of access network equipment, and as the reconstruction access network equipment in user equipment (UE) handoff procedure, the access network equipment includes：

Acquiring unit, for when source access network equipment indicates that the UE is switched to after target access network equipment, and the UE handoff failures, accesses the reconstruction access network equipment, obtaining the information of the source access network equipment or the target access network equipment；

Transmitting element, for the source access network equipment or the information of target access network equipment obtained according to the acquiring unit, sends the corresponding data forwardings of the UE to the source access network equipment or the target access network equipment and indicates；

Receiving unit, the data for receiving the UE that the source access network equipment or the target access network equipment indicate to send according to the data forwarding；Or, receive the data for the UE that the source access network equipment indicates to notify the target access network equipment to send according to the data forwarding.

With reference to the fourth aspect of the present invention, in the first possible implementation of fourth aspect, the data of the UE are sent to after the target access network equipment by the source access network equipment, are preserved In in the source access network equipment, wherein,

The acquiring unit specifically for：Obtain the information of the source access network equipment；

The transmitting element specifically for：The information of the source access network equipment obtained according to the acquiring unit, sends the corresponding data forwardings of the U E to the source access network equipment and indicates；

The receiving unit specifically for：Receive the data for its UE preserved that the source access network equipment indicates to send according to the data forwarding.

With reference to the fourth aspect of the present invention, in second of possible implementation of fourth aspect, the data of the UE are sent to after the target access network equipment by the source access network equipment deletes out of described source access network equipment, wherein,

The receiving unit specifically for：Receive the data for the UE that the source access network equipment indicates to notify the target access network equipment to send according to the data forwarding.

With reference to the first or second of possible implementation of the fourth aspect of the present invention or fourth aspect, in the third possible implementation of fourth aspect, the receiving unit, it is additionally operable to receive the wireless connection reconstruction message that the UE is sent, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment；

The acquiring unit, obtains the information of the source access network equipment in rebuilding message specifically for the wireless connection received from the receiving unit.

With reference to the fourth aspect of the present invention, in the 4th kind of possible implementation of fourth aspect, the data of the UE are sent to the target access network equipment by the source access network equipment, wherein, the acquiring unit specifically for：Obtain the information of the target access network equipment； The transmitting element specifically for：The information of the target access network equipment obtained according to the acquiring unit, sends the corresponding data forwardings of the UE to the target access network equipment and indicates；

The receiving unit specifically for：Receive the data for the UE that the target access network equipment indicates to send according to the data forwarding.

With reference to the 4th kind of possible implementation of the fourth aspect of the present invention, in the 5th kind of possible implementation of fourth aspect, the receiving unit, it is additionally operable to receive the radio link failure report that the UE is sent, wherein the radio link failure report includes the information of the target access network equipment；

The acquiring unit, the information specifically for obtaining the target access network equipment in the radio link failure report that is received from the receiving unit.

With reference to the 4th kind of possible implementation of the fourth aspect of the present invention, in the 6th kind of possible implementation of fourth aspect, the receiving unit, it is additionally operable to receive the wireless connection reconstruction message that the UE is sent, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment；The transmitting element, is additionally operable to the information of source access network equipment received according to the receiving unit, and sending data forwarding to the source access network equipment indicates；

The receiving unit, is additionally operable to receive the data forwarding conversion message that the source access network equipment indicates to send according to the data forwarding, the data forwarding conversion message includes the information of the target access network equipment；

The acquiring unit obtains the information of the target access network equipment in changing message specifically for the data forwarding received from the receiving unit.

With reference to the fourth aspect of the present invention or fourth aspect the first one of to the 5th kind of possible implementation, in the 6th kind of possible implementation of fourth aspect, the data forwarding is designated as Radio Link Failure instruction. With reference to the fourth aspect of the present invention or fourth aspect the first one of to the 5th kind of possible implementation, in the 7th kind of possible implementation, the data forwarding indicates to include：The mark of the UE.

With reference to the 7th kind of possible implementation of the fourth aspect of the present invention, in the 8th kind of possible implementation of fourth aspect, the data forwarding indicates also to include：Rebuild cell ID.

With reference to the 7th kind of the fourth aspect of the present invention or the 8th kind of possible implementation, in the 9th kind of possible implementation of fourth aspect, the data forwarding indicates also to include：The RAB E-RAB information of evolved universal terrestrial radio access network.

The fifth aspect of the present invention is there is provided a kind of access network equipment, and as the source access network equipment in user equipment (UE) handoff procedure, the access network equipment includes：

Transmitting element, for sending switching command to the UE, the switching command includes the information of Target cell；

The transmitting element, is additionally operable to being sent to the Slow UE deposited data into the target access network equipment where the Target cell；

Receiving unit, for when the UE handoff failures after, when access network equipment is rebuild in access, receives and described rebuild the data forwarding that access network equipment sends and indicate；

The transmitting element, is additionally operable to when the source access network equipment preserves the data for the UE for being sent to the target access network equipment, is indicated according to the data forwarding, and the data of the UE are sent to the reconstruction access network equipment；Or, it is additionally operable to when the source access network equipment does not preserve the data for the UE for being sent to the target access network equipment, indicated according to the data forwarding, notify the target access network equipment to send the data of the UE to the reconstruction access network equipment；Or, it is additionally operable to be indicated according to the data forwarding, the information of the target access network equipment is sent to the reconstruction access network equipment, so that the reconstruction access network equipment is according to the target access network equipment Information obtains the data of the UE from the target access network equipment.

With reference to the fifth aspect of the present invention, in the first possible implementation of the 5th aspect, this method also includes：

After memory cell, the target access network equipment where for being sent to the Target cell in the data for the UE that the transmitting element deposits Slow, the data for the UE for being sent to the target access network equipment are preserved.

With reference to the first possible implementation of the fifth aspect of the present invention, in second of possible implementation of the 5th aspect, this method also includes：

Unit is deleted, when reaching preset time for preserving the data of the UE when the memory cell, preserved UE data are deleted.

With reference to the first possible implementation of the fifth aspect of the present invention, in the third possible implementation of the 5th aspect, this method also includes：

When deleting unit, context release message for receiving the UE when the receiving unit, preserved UE data are deleted.

With reference to the fifth aspect of the present invention, in the 4th kind of possible implementation of the 5th aspect, the transmitting element notifies the target access network equipment to send the data of the UE to the reconstruction access network equipment by data forwarding request lmessage, wherein, the data forwarding request lmessage includes the mark of the UE.

With reference to the 4th kind of possible implementation of the fifth aspect of the present invention, in the 5th kind of possible implementation of the 5th aspect, the data forwarding request lmessage also includes rebuilding cell ID.

With reference to the 4th kind of the fifth aspect of the present invention or the 5th kind of possible implementation, in the 6th kind of possible implementation of the 5th aspect, the data forwarding request lmessage also includes：The RAB E-RAB information of evolved universal terrestrial radio access network. With reference to the fifth aspect of the present invention, in the 7th kind of possible implementation, the transmitting element changes the information that message sends the target access network equipment to the reconstruction access network equipment by data forwarding.

With reference to the fifth aspect of the present invention or the 5th aspect the first one of to the 7th kind of possible implementation, in the 8th kind of possible implementation of the 5th aspect, the data forwarding indicates to include：The mark of the UE.

With reference to the 8th kind of possible implementation of the fifth aspect of the present invention, in the 9th kind of possible implementation of the 5th aspect, the data forwarding indicates also to include：Rebuild cell ID.

With reference to the 8th kind of the fifth aspect of the present invention can or the 9th kind of possible implementation, in the tenth kind of possible implementation of the 5th aspect, the data forwarding indicates also to include：The wireless access 7 of evolved universal terrestrial radio access network carries E-RAB information.

The sixth aspect of the present invention is there is provided a kind of access network equipment, and as the target access network equipment in user equipment (UE) handoff procedure, the access network equipment includes：

Receiving unit, for when source access network equipment indicates that the UE is switched to target access network equipment, receiving the data for the UE that the source access network equipment Slow is deposited；

The receiving unit, is additionally operable to, when the UE handoff failures and access reconstruction access network equipment, receive the data forwarding request lmessage that the data forwarding for rebuilding access network equipment transmission indicated or received the source access network equipment transmission；

Transmitting element, the data forwarding for being received according to the receiving unit is indicated or the data forwarding request lmessage, and received UE data are sent to the reconstruction access network equipment.

With reference to the sixth aspect of the present invention, in the first possible implementation of the 6th aspect, the data forwarding request lmessage includes the mark of the UE.

With reference to the first possible implementation of the sixth aspect of the present invention, the second of the 6th aspect Plant in possible implementation, the data forwarding request lmessage also includes rebuilding cell ID.

With reference to the first or second of possible implementation of the sixth aspect of the present invention, in the third possible implementation of the 6th aspect, the data forwarding request lmessage also includes：The RAB E-RAB information of evolved universal terrestrial radio access network.

With reference to the sixth aspect of the present invention or the 6th aspect the first one of to the third possible implementation, in the 4th kind of possible implementation of the 6th aspect, the data forwarding indicates to include：The mark of the UE.

With reference to the 4th kind of possible implementation of the sixth aspect of the present invention, in the 5th kind of possible implementation of the 6th aspect, the data forwarding indicates also to include：Rebuild cell ID.

With reference to the 4th kind of the sixth aspect of the present invention or the 5th kind of possible implementation, in the 6th kind of possible implementation of the 6th aspect, the data forwarding indicates also to include：The RAB E-RAB information of evolved universal terrestrial radio access network.

Data transmission method provided in an embodiment of the present invention, access network equipment, when UE is switched to Target cell failure, the data of the UE can be obtained from source access network equipment or target access network equipment by rebuilding access network equipment, compared with rebuilding access network equipment in the prior art and can not obtain the data of the UE, the UE obtained data can be utilized by rebuilding access network equipment, continue the business that UE is not completed in cell-of-origin, so as to improve UE telecommunication service quality.Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, cylinder will be made to the required accompanying drawing used in embodiment or description of the prior art below singly to introduce, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings. Fig. 1 is a kind of data transmission method flow chart in the embodiment of the present invention 1；Fig. 2 is another data transmission method flow chart in the embodiment of the present invention 1；Fig. 3 is another data transmission method flow chart in the embodiment of the present invention 1；Fig. 4 be the embodiment of the present invention 1 in a kind of access network equipment composition schematic diagram；Fig. 5 be the embodiment of the present invention 1 in another access network equipment composition schematic diagram；Fig. 6 be the embodiment of the present invention 1 in another access network equipment composition schematic diagram；Fig. 7 is a kind of data transmission method flow chart in the embodiment of the present invention 2；Fig. 8 is a kind of data transmission method flow chart in the embodiment of the present invention 3；Fig. 9 is a kind of data transmission method flow chart in the embodiment of the present invention 4；

10 be a kind of data transmission method flow chart in the embodiment of the present invention 5；Figure 11 is another data transmission method flow chart in the embodiment of the present invention 5；Figure 12 is another data transmission method flow chart in the embodiment of the present invention 5；Figure 13 is a kind of data transmission method flow chart in the embodiment of the present invention 6；Figure 14 is another data transmission method flow chart in the embodiment of the present invention 6；Figure 15 is another data transmission method flow chart in the embodiment of the present invention 6；Figure 16 is a kind of data transmission method flow chart in the embodiment of the present invention 7；Figure 17 is a kind of data transmission method flow chart in the embodiment of the present invention 8；Figure 18 is a kind of data transmission method flow chart in the embodiment of the present invention 9；Figure 19 be the embodiment of the present invention 10 in-- kind of access network equipment composition schematic diagram；Figure 20 be the embodiment of the present invention 11 in-- kind of access network equipment composition schematic diagram；Figure 21 be the embodiment of the present invention 12 in-- kind of access network equipment composition schematic diagram；Figure 22 be the embodiment of the present invention 13 in-- kind of access network equipment composition schematic diagram；

23 be the embodiment of the present invention 14 in-- kind of access network equipment composition schematic diagram. Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

The techniques described herein may be used in various communication systems, such as current 2G, 3G communication systems and next generation communication system, such as global system for mobile communications（GSM, Global System for Mobile communications), CDMA (CDMA, Code Division Multiple Access) system, time division multiple acess（TDMA, Time Division Multiple Access) system, WCDMA（WCDMA, Wideband Code Division Multiple Access Wireless), frequency division multiple access (FDMA, Frequency Division Multiple Addressing) system, OFDM (OFDM A, Orthogonal Frequency-Division Multiple Access) system, Single Carrier Frequency Division Multiple Access (SC-FDMA) system, GPRS（GPRS, General Packet Radio Service) system, Long Term Evolution (LTE, Long Term Evolution) system, and other such communication systems.

Various aspects are described herein in connection with user equipment and/or access network equipment.

User equipment, it can be wireless terminal, can also be catv terminal, wireless terminal can refer to the equipment for providing a user voice and/or data connectivity, portable equipment with wireless connecting function or other processing equipments for being connected to radio modem.Wireless terminal can be through wireless access network（For example, RAN, Radio Access Network) communicated with one or more core nets, wireless terminal can be mobile terminal, such as mobile phone（Or be " honeycomb " phone）With the computer with mobile terminal, for example, it may be portable, pocket, hand-held, built-in computer or The vehicle-mounted mobile device of person, they exchange voice and/or data with wireless access network.For example, PCS (PCS, Personal Communication Service) phone, wireless phone, Session initiation Protocol（SIP) phone, WLL (WLL, Wireless Local Loop) stand, personal digital assistant（PDA, Personal Digital Assistant) etc. equipment.Wireless terminal is referred to as system, subscri er unit (Subscriber Unit), subscriber station（Subscriber Station), movement station (Mobile Station), mobile station（Mobile), distant station (Remote Station), access point（Access Point), remote terminal（Remote Terminal), access terminal（Access Terminal), user terminal（User Terminal), user agent（User Agent), user equipment (User Device or User Equipment) etc..

Source access network equipment, reconstruction access network equipment and target access network equipment, can be base stations（For example, access point）Or the base station controller in GSM or CDMA（BSC, base station controller) or WCDMA in radio network controller（RNC, Radio Network Controller), the present invention is not limited.

Wherein, base station can refer in access network on interface in the air by one or more sectors and the equipment of wireless terminal communications.Base station can be used for IP packets mutually being changed the air frame received, and as the router between wireless terminal and the remainder of access network, the remainder of wherein access network may include Internet protocol（IP) network.Attribute management of the base station also tunable to air interface.For example, base station can be the base station in GSM or CDMA（BTS, Base Transceiver Station), can also be the base station in WCDMA（), NodeB the evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE is can also be, the present invention is not limited.

In addition, the terms " system " and " network " are often used interchangeably herein.The terms " and/or ", only a kind of incidence relation for describing affiliated partner, represents there may be three kinds of relations, for example, A and/or B, can be represented：Individualism A, while there is A and B, it is single Solely there are these three situations of B.In addition, character "/" herein, typically represent forward-backward correlation object be it is a kind of " or " relation.

User equipment (UE) is switched to and Target cell by following examples applied to source access network equipment, and is set up after radio link failure, and the scene of cell is rebuild in access.

Prior art is in handoff procedure, and its Slow UE deposited data are sent to the corresponding access network equipment of Target cell by source access network equipment, and (following cylinder claims target access network equipment）Afterwards, the UE sent data are deleted.Deleted UE data can not be obtained after cell is rebuild in UE accesses, and no matter UE data are actively sent to the corresponding access network equipment of reconstruction cell (following cylinder, which is weighed, builds access network equipment by source access network equipment）Or rebuild the data that access network equipment asks UE to source access network equipment, deleted UE data can not be obtained by rebuilding access network equipment, certainly, now, the data for the UE that access network equipment new Slow in source is deposited can be sent to reconstruction access network equipment, and therefore, prior art can not ensure the Lossless transport of data（Or the non-destructive of data transfer）So that the business not completed in cell-of-origin can not continue rebuilding cell relays, and service quality is poor.

It should be noted that in above scene, it is identical with rebuilding access network equipment possibility that reconstruction cell is likely located at source access network equipment, i.e. source access network equipment, it is also possible to different.But source access network equipment is different from target access network equipment, access network equipment is rebuild different from target access network equipment.

In addition, the data for the UE that source access network equipment is preserved are except the data of the UE including having been issued to target access network equipment, it may also include the data for the UE that new Slow is deposited.Present invention is generally directed to the data for the UE for having been issued to target access network equipment, in order to describe conveniently, processing procedure in following examples only to the data for the UE for having been issued to target access network equipment is described, i.e., following UE data refer to the data for the UE for having been issued to target access network equipment.

Following examples consider above technical problem there is provided following a variety of solutions, to ensure the non-destructive of data transfer. Embodiment 1

In order to ensure in the non-destructive of data transfer, the present embodiment, source access network equipment deposits Slow

UE data are sent to after target access network equipment, and UE data are not deleted, but keep in UE data, i.e., UE data are preserved into a period of time.In this way, after cell is rebuild in follow-up UE accesses, if rebuilding cell is located at source access network equipment, i.e. reconstruction access network equipment is identical with source access network equipment, directly it can continue to be communicated with UE using the UE preserved data；If rebuilding cell is not located at source access network equipment, rebuild access network equipment different from source access network equipment, the UE data of its preservation can be obtained from source access network equipment by rebuilding access network equipment, continue to be communicated with UE using the UE of acquisition data.So that the business not completed in cell-of-origin continues in reconstruction cell relays, service quality is improved.

Specifically, Fig. 1 is refer to, it is that the embodiment of the present invention 1 provides a kind of flow chart of data transmission method, as shown in figure 1, this method includes：

101st, source access network equipment sends switching command to UE, and the switching command includes the information of Target cell；

102nd, the Slow UE deposited data are sent to the target access network equipment where the Target cell by the source access network equipment；

103rd, the source access network equipment preserves the data for the UE for being sent to the target access network equipment.

In this way, when UE handoff failures, when cell is rebuild in access, if rebuilding cell is located at source access network equipment, source access network equipment can continue to be communicated with UE using the UE preserved data；If the reconstruction access network equipment where rebuilding cell is not source access network equipment, the UE preserved data can be sent to reconstruction access network equipment by source access network equipment, so that the data for rebuilding the UE that access network equipment is sent using source access network equipment are communicated with UE, after Continue the business in source access network equipment.

It should be noted that the data that source access network equipment preserves the UE are a temporary processes.Preserve a period of time i.e. deletion.The time preserved can be according to the need for operator or UE handoff failures and empirical value the time required to selecting to rebuild cell access are set.Alternatively, it is also possible to which the data of the UE can also be preserved in source access network equipment, the context release message until receiving UE（Context release) when, the data of the UE are deleted.For example, when UE successful switch is to target access network equipment, context release message can be sent to source access network equipment, so that source access network equipment deletes the Slow deposit data related to the UE, the link circuit resource related to the UE is discharged.Therefore, source access network equipment when receiving context release message, can delete the data of the UE.If UE is switched to target access network equipment failure, then can be in UE successful switch to after rebuilding access network equipment, context release message is sent from reconstruction access network equipment to source access network equipment, so that source access network equipment deletes the related Slow deposit datas of the UE.

Therefore, please continue to refer to Fig. 2, optionally, methods described is further comprising the steps of：

104th, when the data that the source access network equipment preserves the UE reach preset time, preserved UE data are deleted.

Wherein, the preset time, same above description can be according to the need for operator or UE handoff failures and empirical value the time required to selecting to rebuild cell access are set, and the embodiment of the present invention does not do any limitation.

Or, as shown in figure 3, optionally, methods described is further comprising the steps of：

105th, when the source access network equipment receives the context release message of the UE, preserved UE data are deleted.

Accordingly, the present embodiment also provides a kind of access network equipment, for performing above method, is used as the source access network equipment in above method.As shown in figure 4, the access network equipment 400 includes：First Interface circuit 410, second interface circuit 420, memory 430 and processor 440.Wherein, first interface circuit 410, second interface circuit 420 and memory 430 are connected with processor 440 respectively.First interface circuit 410 is used for and UE communication；Second interface circuit 420 is used to communicate with other access network equipments；Memory is used to preserve data.In the present embodiment, processor 440 is used to send switching command to UE by first interface circuit 410, and the switching command includes the information of Target cell；And the Slow UE deposited data are sent to the target access network equipment where the Target cell by second interface circuit 420；And the UE of transmission data are stored in memory 430.

Optionally, as shown in figure 5, access network equipment 400 can also include Slow memory cells 450, UE data are deposited for Slow.Optionally, the Slow memory cells 450 can be the Slow memory cells independently of the storage device of processor 440 or in processor 440.The embodiment of the present invention does not do any limitation.

Optionally, as shown in Figure 6, access network equipment 400 can also include deleting unit 460, the time of the data for the UE being stored in for control in memory 430 or condition, to delete the UE preserved in memory 430 data in the case of time or condition satisfaction.For example, for when the UE preserved in memory 430 data reach preset time, deleting the UE preserved in memory 430 data；For another example, when access network equipment 400 receives UE context release message, the UE preserved in memory 430 data are deleted.

In realization, deleting unit 460 can be realized using processor 440.In addition, the deletion unit 460 can be realized or hardware entities by program code.Can be to be embedded in the form of program code in processor or other chips for example, deleting unit 460；For another example, deleting unit 460 can also be separately provided, for example, being arranged to timer.

In above example 1, in source, access network equipment preserves the data for the UE for being sent to target access network equipment, therefore, when UE handoff failures, and either source access network equipment will actively be preserved UE data be sent to reconstruction access network equipment, or rebuild the data that access network equipment asks the UE from source access network equipment, the Lossless transport of data can be ensured, so as to ensure the continuity of UE business.Certainly, when reconstruction access network equipment is identical with source access network equipment, the UE of its preservation data is continuing with, are described separately below by embodiment 2 and 3.Embodiment 2

In the present embodiment, access network equipment is rebuild identical with source access network equipment.In order to ensure in the non-destructive of data transfer, the present embodiment, the Slow UE deposited data are sent to after target access network equipment by source access network equipment, and UE data are not deleted, but keep in UE data, i.e., UE data are preserved into a period of time.In this way, when reconstruction access network equipment is identical with source access network equipment, directly can continue be communicated with UE using the UE preserved data.The business for initiating not completed before switching in cell-of-origin is continued, service quality is improved.

Specifically, Fig. 7 is refer to, it is that the embodiment of the present invention 2 provides a kind of flow chart of data transmission method, as shown in fig. 7, this method includes：

701st, source access network equipment sends switching command (Handover Command) to UE, and the switching command includes the information of Target cell.

Wherein, the source access network equipment can indicate that UE is switched to target access network equipment by switching command.

702nd, the Slow UE deposited data are sent to the target access network equipment where the Target cell by the source access network equipment.

Wherein, after source access network equipment sends switching command to UE, source access network equipment can send the data of the UE to target access network equipment.So, unfinished business can just be continued in Target cell when UE is switched successfully, and situation about switching successfully is prior art, the present invention is not # texts are elaborated.

Optionally, source access network equipment can also transmit Sequence Number in addition to the data of the UE are sent to target access network equipment（Sequence Number, SN) status information, the upstream or downstream data Lost bag situations for indicating the UE.For example, pass through the sequence number and Hyper Frame Number of the mono- Lost upstream or downstream packets lost, indicate the UE uploads data failure since which packet or receives data failure, the bit of each in bit stream can also further be passed through, specifically indicate which packet is uploaded or received successfully, which packet is uploaded or reception failure.Specifically, including step

703rd, source access network equipment sends SN status informations to target access network equipment.And there is no sequence requirement between step 702 and 703, you can first to send UE data, retransmit SN status informations；SN status information can also be first sent, UE data are being sent；It is of course also possible to send simultaneously；The present invention does not do any limitation.

Wherein, serial-number-state information can include one or more of following information：UE mark, the ascending packet data convergence protocol that mono- Lost loses（Packet Data Convergence Protocol, PDCP) Service Data Unit（Service Data Unit, SDU) sequence number and Hyper Frame Number, the descending PDCP SDU without SN that target access network equipment will be distributed sequence number and Hyper Frame Number.Optionally, the SN status informations can also include bit stream, and what each bit of bit stream was represented is the SDU reception conditions after the up PDCP SDU that the first Lost loses, and 1 represents to be properly received, and 0 represents to be not successfully received.

704th, the source access network equipment preserves the data for the UE for being sent to the target access network equipment.

It should be noted that the data that source access network equipment preserves the UE are a temporary processes.Preserve a period of time i.e. deletion.The time preserved can be according to the need for operator or U E are cut Change failure and select to rebuild the empirical value the time required to cell is accessed to set.Alternatively, it is also possible to which the data of the UE can also be preserved in source access network equipment, the context release message until receiving UE（Context release) when, the data of the UE are deleted.

In addition, source access network equipment is knowable to SN status informations, or perhaps can inquire about, it therefore, it can equally be preserved to UE data, it is only necessary to send when needing.After the UE handoff failures, when the reconstruction cell of UE selections is on the access network equipment of source, source access network equipment can continue to be communicated with UE using the UE preserved data, and such UE can continue unfinished business in the cell relays of source access network equipment.

Data transmission method provided in an embodiment of the present invention, the data of the UE are temporarily preserved after switching command is sent to UE by source access network equipment, compared with deleting the method for UE data immediately in the prior art, when the reconstruction cell that UE is selected is on the access network equipment of source, the UE preserved data can be utilized, recover the unfinished business processings of UE, it is to avoid UE up-downgoing Shuo Ju Lost lose, and improve UE telecommunication service quality.Embodiment 3

In the present embodiment, access network equipment is rebuild different from source access network equipment.In order to ensure in the non-destructive of data transfer, the present embodiment, the Slow UE deposited data are sent to after target access network equipment by source access network equipment, and UE data are not deleted, but keep in UE data, i.e., UE data are preserved into a period of time.So, after cell is rebuild in follow-up UE accesses, if rebuilding cell is not located at source access network equipment, rebuild access network equipment different from source access network equipment, the UE data of its preservation can be obtained from source access network equipment by rebuilding access network equipment, continue to be communicated with UE using the UE of acquisition data.So that the business not completed in cell-of-origin continues in reconstruction cell relays, service quality is improved. Specifically, Fig. 8 is refer to, it is that the embodiment of the present invention 3 provides a kind of flow chart of data transmission method, as shown in figure 8, this method includes：

801st, source access network equipment sends switching command to UE, and the switching command includes the information of Target cell.

802nd, the Slow UE deposited data are sent to the target access network equipment where the Target cell by the source access network equipment.

Be the same as Example 2, optionally, can also include step 803:Source access network equipment sends SN status informations to target access network equipment.And there is no sequence requirement between step 802 and 803.

804th, the source access network equipment preserves the data for the UE for being sent to the target access network equipment.

It should be noted that the data that source access network equipment preserves the UE are a temporary processes.Preserve a period of time i.e. deletion.The time preserved can be according to the need for operator or UE handoff failures and empirical value the time required to selecting to rebuild cell access are set.Alternatively, it is also possible to which the data of the UE can also be preserved in source access network equipment, the context release message until receiving UE（Context Release) when, the data of the UE are deleted.

After the UE handoff failures, when cell reconstruction is rebuild in UE selections, wherein, the reconstruction cell, which is located at, rebuilds under access network equipment, and the reconstruction access network equipment is different from source access network equipment.

Wherein, when UE is switched to reconstruction cell, the reconstruction access network equipment can receive the wireless connection reconstruction message that the UE is sent, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment.For example, the wireless connection reconstruction message can be wireless heterogeneous networks (Radio Resource Control, RRC) connection reconstruction request message, or RRC reconstruction completion messages.Rebuild during access network equipment can rebuild message from the wireless connection and obtain the information of the source access network equipment.The information of the source access network equipment can be the mark of source access network equipment Know, the mark can be globally unique mark or temporary mark etc..

805th, rebuild access network equipment and send the corresponding data forwarding instructions of the UE to the source access network equipment.

Wherein, the data forwarding instruction can be a new message or can also be that Radio Link Failure is indicated.Data forwarding indicates to include：UE mark（UE ID ).UE ID can be in the present embodiment：Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs of the UE in cell-of-origin（Cell Radio Network Temporary Identifier, C-RNTI) optionally, data forwarding can also be included in indicating：Rebuild cell ID, wherein described cell ID of rebuilding can be Physical Cell Identifier (the Physical Cell Identifier for rebuilding cell, PCI), it is either the Cell Global Identification rebuild the Physical Cell Identifier of cell and the frequency information of reconstruction cell or can also be reconstruction cell（E-UTRAN Cell Global Identifier, ECGI), wherein E-UTRAN Chinese full name is the Universal Terrestrial wireless access network of evolution, and English full name is Evolved Universal Terrestrial Radio Access Network.

806th, after source access network equipment receives the data forwarding instruction, indicated according to the data forwarding, to the data for rebuilding its UE preserved that access network equipment is sent.

Optionally, step 807 can also be included:Source access network equipment sends SN status informations to access network equipment is rebuild.And there is no sequence requirement between step 806 and 807.Description be the same as Example 2, will not be repeated here as described in SN status informations.

In this way, the data for rebuilding the UE that access network equipment can be sent using source access network equipment are communicated with UE, continue the business in source access network equipment.

Optionally, the data forwarding indicates that the RAB of evolved universal terrestrial radio access network can also be included（E-UTRAN Radio Access Bearer, E-RAB) information.Wherein, the E-RAB information can include：The E-RAB of the UE is identified, is rebuild the up general of cell Data transfer platform（General Data Transfer Platform, GTP) endpoint of a tunnel（UL GTP Tunnel Endpoint) and rebuild cell descending GTP endpoint of a tunnels（DL GTP Tunnel Endpoint) wherein GTP tunnel end points include rebuild access network equipment transport Layer address and Tunnel End Point Identifier (Tunnel Endpoint Identity, TEID).

So, it can not directly determine to rebuild the scene in the transmission tunnel of cell for source access network equipment, the E-RAB information that source access network equipment is included in can then being indicated by data forwarding determines to rebuild the transmission tunnel of cell, so that UE data are sent into reconstruction access network equipment.

Optionally, as shown in figure 8, after step 805 source access network equipment receives the data forwarding instruction that reconstruction access network equipment is sent, this method can also include：

808th, source access network equipment sends data forwarding request to access network equipment is rebuild（Data forward request) message.

Wherein, data forwarding request lmessage is used to ask reconstruction access network equipment request reconstruction access network equipment that the address of data forwarding is sent into source access network equipment, the information such as Tunnel Identifier.In this way, the information for being used to determine to rebuild the transmission tunnel of cell above can not also be carried in data forwarding instruction, but source access network equipment is sent in single data forwarding request lmessage.In addition, can also be included in the data forwarding request lmessage：UE mark（UE ID), wherein UE ID can be C-RNTIs of the UE in cell-of-origin.Optionally, in the data forwarding request lmessage can also comprising cell-of-origin mark, wherein cell-of-origin mark can be cell-of-origin ECGI, or cell-of-origin PCI or frequency.

809th, rebuild access network equipment and send data forwarding response message to source access network equipment（Data forward response ).

Wherein, UE ID and E-RAB information can be included in data forwarding response message.Wherein, the E-RAB information can include：The E-RAB marks of the UE, the up of reconstruction cell are led to Use data transfer platform（General Data Transfer Platform, GTP) endpoint of a tunnel（UL GTP Tunnel Endpoint) and rebuild cell descending GTP endpoint of a tunnels（DL GTP Tunnel Endpoint) wherein GTP tunnel end points include rebuild access network equipment transport Layer address and Tunnel End Point Identifier（ Tunnel Endpoint Identity, TEID ).It is further alternative, reconstruction cell ID can also be included in the data forwarding response message.

In this way, source access network equipment just can be according to the parameter in data forwarding response message, to the data for rebuilding the access network equipment transmission UE in step 806.

Data transmission method provided in an embodiment of the present invention, the data of the UE are temporarily preserved after switching command is sent to UE by source access network equipment, after UE handoff failures select new reconstruction cell, the data of the UE can be obtained from source access network equipment by rebuilding access network equipment, compared with deleting the method for UE data immediately in the prior art, when the reconstruction cell that UE is selected is not on the access network equipment of source, the data of the UE can be obtained from source access network equipment, so as to utilize the UE obtained data, recover the unfinished business processings of UE, the up-downgoing Shuo Ju Lost for avoiding UE lose, improve UE telecommunication service quality.

In the embodiment above, source access network equipment is sent to after target access network equipment by the Slow UE deposited data, no longer directly deletes the UE sent data, but is preserved, in case subsequently using.In example 4 below to 6, source access network equipment does not preserve the UE of transmission data, but falls the data of the UE according to Xian You Ji Shu Lost.Then, the data that source access network equipment is sent to the UE of target access network equipment are obtained from target access network equipment by reconstruction access network equipment.It is described in detail as follows：Embodiment 4

In the present embodiment, access network equipment is rebuild identical with source access network equipment.In the present embodiment Source access network equipment does not preserve the data for the UE for having been issued to target access network equipment, but the UE sent data are deleted according to prior art.Unlike, in order to ensure the non-destructive of data transfer, it is same equipment when rebuilding access network equipment and source access network equipment, source access network equipment can obtain the data of the UE from target access network equipment, continue to be communicated with UE using the UE of acquisition data.So that the business not completed in cell-of-origin continues in reconstruction cell relays, service quality is improved.

Specifically, refer to Fig. 9, it is that the embodiment of the present invention 4 provides a kind of flow chart of data transmission method, as shown in figure 9, this method includes：

901st, source access network equipment sends switching command to UE, and the switching command includes the information of Target cell.

902nd, the Slow UE deposited data are sent to the target access network equipment where the Target cell by the source access network equipment.

Be the same as Example 2, optionally, can also include step 903:Source access network equipment sends SN status informations to target access network equipment.And there is no sequence requirement between step 902 and 903.

After the UE handoff failures, when the reconstruction cell of UE selections is located at source access network equipment, in addition to：

905th, source access network equipment sends data forwarding to target access network equipment and indicated.

Wherein, the data forwarding can include UE ID in indicating.Wherein, UE ID can include：The C-RNTI of UE described in cell-of-origin and/or the UE marks of source access network equipment interface, can also include the UE marks of UE C-RNTI and/or target access network equipment interface described in Target cell.

906th, target access network equipment indicates UE data being sent to source access network equipment according to data forwarding.

Wherein, target access network equipment can determine the data related to the UE according to UE ID.Optionally, SN status informations can also be sent to source access network equipment by target access network equipment. That is, this method can also include step 907:SN status informations are sent to source access network equipment by target access network equipment.Certainly, because source access network equipment can know the SN status informations, this step can also be omitted.

In addition, in handoff failure, source access network equipment continues to send UE data and/or SN status informations to target access network equipment, nonsensical.Therefore, optionally, this method can also include：

904th, source access network equipment stops sending the data of the UE to target access network equipment.Certainly, if also have sent SN status informations before, now, also stop sending SN status informations.

In the present embodiment, if the total data of the UE is all sent to target access network equipment by source access network equipment, the total data of the UE can be obtained from target access network equipment, to continue the business that UE is not completed in cell-of-origin.If the partial data of the UE is only sent to target access network equipment by source access network equipment, and another part is remained in the access network equipment of source, it can then be obtained from target access network equipment and merge the data for obtaining complete UE after deleted part UE data with the UE data of reservation, to continue the business that UE is not completed in cell-of-origin.

Optionally, the passage of the data for sending the UE can be determined for the ease of target access network equipment, E-RAB information can also be included in the data forwarding that source access network equipment is sent is indicated.Wherein E-RAB information can include E-RAB ID, the up GTP tunnel end points of cell-of-origin and cell-of-origin descending GTP tunnel end points etc..

Data transmission method provided in an embodiment of the present invention, when the reconstruction access network equipment that UE handoff failures are selected is identical with source access network equipment, source access network equipment can obtain deleted UE data from target access network equipment, compared with source access network equipment can not reacquire the method for UE data in the prior art, when the reconstruction cell that UE is selected is on the access network equipment of source, the data of the UE can be obtained from target access network equipment, so as to using the UE obtained data, recover UE Unfinished business processing, it is to avoid UE up-downgoing Shuo Ju Lost lose, and improve UE telecommunication service quality.Embodiment 5

In the present embodiment, access network equipment is rebuild different from source access network equipment.Source access network equipment does not preserve the data for the UE for having been issued to target access network equipment in the present embodiment, but the UE sent data are deleted according to prior art.As different from Example 4, it is not same equipment to rebuild access network equipment and source access network equipment, in order to ensure the non-destructive of data transfer, the data of the UE can be obtained from target access network equipment by rebuilding access network equipment, continue to be communicated with UE using the UE of acquisition data.So that the business not completed in cell-of-origin continues in reconstruction cell relays, service quality is improved.

Specifically, refer to Figure 10, it is a kind of flow chart for data transmission method that the embodiment of the present invention 5 is provided.Here, indicating that UE switchings and the selection of UE handoff failures are rebuild the step of cell is rebuild and be not described in detail for source access network equipment, reference can be made to above example；And only the processing procedure after UE handoff failures is described in detail, as shown in Figure 10, this method includes：

1001st, the information that access network equipment obtains target access network equipment is rebuild；

1002nd, according to the information of the target access network equipment, the corresponding data forwardings of UE is sent to target access network equipment and are indicated；

1003rd, the data for the UE that the target access network equipment indicates to send according to the data forwarding are received.

Same above example, target access network equipment is received after data forwarding instruction, can be only to the data for rebuilding access network equipment transmission UE, can also be to the data and serial-number-state information for rebuilding access network equipment transmission UE. In the present embodiment, step 1001, that is, rebuilding the method for the information that access network equipment obtains target access network equipment can also can be obtained to be obtained by UE by source access network equipment.

For example, as shown in figure 11, the information of target access network equipment can be obtained in the following ways by rebuilding access network equipment, and step 1001 can include：

1101st, rebuild access network equipment and receive the radio link failure report that the UE is sent（Radio Link Failure Report), wherein just blunt announcement includes the information of the target access network equipment to the Radio Link Failure.

Wherein, UE can also ask the radio link failure report so that UE sends the radio link failure report to access network equipment is rebuild actively to access network equipment transmission radio link failure report is rebuild from reconstruction access network equipment to UE.The information of the target access network equipment can be the mark of target access network equipment.

1102nd, the information of the target access network equipment is obtained from the radio link failure report.Wherein, rebuild access network equipment to obtain from radio link failure report after the information of target access network equipment, step 1002 can be performed and send the data forwarding instruction to target access network equipment.The data forwarding can include UE ID in indicating, the C-RNTL that the UE ID can be UE described in the C-RNTI or Target cell of UE described in cell-of-origin is optional, the data forwarding can also include the mark for rebuilding cell in indicating, the PCI or frequency of cell are for example rebuild, or rebuilds the ECGI of cell.Optionally, it can also include including E-RAB ID in E-RAB information, the E-RAB information, rebuild the up GTP tunnel end points of cell and rebuilding the descending GTP tunnel end points of cell during data forwarding is indicated.

For another example, as shown in figure 12, the information of target access network equipment can be obtained using another way by rebuilding access network equipment, and step 1001 can include：

1201st, the access network equipment of rebuilding receives the wireless connection reconstruction message that the UE is sent, Wherein described wireless connection, which rebuilds message, includes the information of the source access network equipment.

1202nd, according to the information of the source access network equipment, send data forwarding to the source access network equipment and indicate.

1203rd, receive the source access network equipment and indicate that the data forwarding sent changes message according to the data forwarding, the data forwarding conversion message includes the information of the target access network equipment.

1204th, the information of target access network equipment is obtained from data forwarding conversion message.

Wherein, the information of the target access network equipment can be the mark of the target access network equipment, or Target Cell Identifier.Wherein Target Cell Identifier can be the ECGI of Target cell or the PCI or frequency of Target cell.It to be C-RNTI of UE described in cell-of-origin etc. that UE ID, the UE ID can also be included in the data forwarding conversion message.

Wherein, rebuild after the information that access network equipment obtains target access network equipment from data forwarding conversion message, step 1002 can be performed and send the data forwarding instruction to target access network equipment.The data forwarding can include UE ID in indicating, the C-RNTL that the UE ID can be UE described in the C-RNTI or Target cell of UE described in cell-of-origin is optional, the data forwarding can also include the mark for rebuilding cell in indicating, the PCI or frequency of cell are for example rebuild, or rebuilds the ECGI of cell.Optionally, it can also include including E-RAB ID in E-RAB information, the E-RAB information, rebuild the up GTP tunnel end points of cell and rebuilding the descending GTP tunnel end points of cell during data forwarding is indicated.

Data transmission method provided in an embodiment of the present invention, after UE handoff failures select new reconstruction cell, the information of target access network equipment can be obtained by rebuilding access network equipment, and the data of the UE are obtained from target access network equipment, compared with it can not obtain the method for UE data in the prior art, when the reconstruction cell that UE is selected is not on the access network equipment of source, the data of the UE can be obtained from target access network equipment by rebuilding access network equipment, so as to using the UE obtained data, recover UE Unfinished business processing, it is to avoid UE up-downgoing Shuo Ju Lost lose, and improve UE telecommunication service quality.Embodiment 6

In the present embodiment, access network equipment is rebuild different from source access network equipment.

Figure 13 is refer to, it is a kind of flow chart for data transmission method that the embodiment of the present invention 6 is provided, as shown in figure 13, the executive agent of this method is reconstruction access network equipment, including：

1301st, the information of source access network equipment is obtained；

1302nd, according to the information of the source access network equipment, the corresponding data forwardings of UE is sent to source access network equipment and are indicated；

Wherein, the wireless connection for rebuilding access network equipment reception UE transmissions re-establishes request message, or after determining that UE is rebuild successfully, the information of the source access network equipment in request message is re-established according to wireless connection, judge to rebuild the source access network equipment whether access network equipment is UE, if rebuilding the source base station that access network equipment is not UE switchings, rebuild access network equipment and send data forwarding instruction to source access network equipment.

1303rd, the data that the target access network equipment indicates the UE that request target access network equipment is sent according to the source access network equipment according to the data forwarding are received.

Wherein, source access network equipment is when receiving the data forwarding instruction of reconstruction access network equipment, it can not stop forwarding data to target access network equipment, it can also stop forwarding data to target BS immediately, and send an end mark, target access network equipment judges that forwarding is completed after the UE data that institute Slow is deposited according to the end mark, and data forwarding completion message is sent to source base station.

For example, as shown in figure 14, after step 1302 reconstruction access network equipment sends data forwarding instruction to source access network equipment, can also include： 1304th, source access network equipment is indicated according to the data forwarding, and data forwarding request is sent to target access network equipment, wherein the data forwarding request is used for the data for indicating that the target access network equipment sends the UE to the reconstruction access network equipment.

Wherein, source access network equipment receives the data without stopping sending the UE to target access network equipment after the data forwarding is indicated, but whole UE data are sent to target access network equipment, until receiving the end mark of gateway transmission, complete UE data can be obtained from target access network equipment by so rebuilding access network equipment.The content of the data forwarding request is similar with data forwarding instruction, including UE ID, can also optionally include rebuilding cell ID and E-RAB information.

So, target access network equipment just can send the data of the UE according to data forwarding request to reconstruction access network equipment, rebuild access network equipment just can receive the data for the UE that target access network equipment is sent by step 1303, so as to using the data of the UE, continue to complete the business that the UE is not completed in cell-of-origin.

For another example, as shown in figure 15, after step 1302 reconstruction access network equipment sends data forwarding instruction to source access network equipment, it can also include：

1305th, source access network equipment stops sending the data of the UE to target access network equipment.Wherein, source access network equipment stops sending to target access network equipment after the data of the UE, an end mark (End Mark) can also be sent to target access network equipment simultaneously, so that target access network equipment subsequently judges whether to have completed data forwarding.

Accordingly, after step 1303 rebuilds the data that access network equipment receives the UE that target access network equipment is sent, this method also includes：

1306th, target access network equipment sends data forwarding completion message to source access network equipment.

Wherein, target access network equipment can judge according to the end mark received in step 1305 Completed to the data forwarding for rebuilding the UE that access network equipment is sent, and notify source access network equipment.UE ID can be included in the data forwarding completion message, Target Cell Identifier etc. can also be optionally included.

1307th, source access network equipment sends the data for the UE that Slow is deposited to reconstruction access network equipment.Wherein, in order to ensure the timing of data, can be from target access network equipment first to the data for rebuilding UE described in access network equipment transmitting portion, the access network equipment that goes out to rise again sends the data of UE described in another part to reconstruction access network equipment, and UE data are merged as described in reconstruction access network equipment by two parts.It is of course also possible to first be sent out by source access network equipment and hair, or both is while send UE data, then merged by reconstruction access network equipment, and inventive embodiments are not limited this after target access network equipment.Embodiment 7

The embodiment of the present invention provides a kind of data transmission method, as shown in figure 16, including：

1601st, completion message is rebuild in the wireless connection reconstruction request or wireless connection for rebuilding the access network equipment reception UE transmissions.

In handoff procedure, source access network equipment is UE selection target cells, and orders UE to be switched to the Target cell specified, but the possible handoff failures of UE, fails to set up wireless connection with target access network equipment.Therefore, UE can perform cell selection procedure, select one to rebuild cell initiation wireless connection in the cell for meet cell selection requirements and re-establish process.Wherein, data forwarding flow provided in an embodiment of the present invention is triggered after can receiving the wireless connection reconstruction request that UE is sent rebuilding access network equipment, to ensure to obtain the UE data that source access network equipment does not operate completion in advance, in case wireless connection recovers UE business processing in cell is rebuild after the completion of rebuilding.Or, data forwarding flow provided in an embodiment of the present invention can also receive the wireless connection that UE is sent rebuilding access network equipment Rebuild after completion message and trigger, can so avoid UE from carrying out unnecessary data forwarding flow in the case of carrying out wireless connection reconstruction failure with the reconstruction cell, so that the data transmission resources between saving access network equipment.

What deserves to be explained is, " wireless connection " described in this specification can include wireless heterogeneous networks (Radio Resource Control, RRC) connection or Radio Resource (Radio Resource, RR) the Radio Link such as connection connection, the title of wireless connection may be different in different network systems, and the embodiment of the present invention is not limited this.

1602nd, the corresponding data forwardings of the UE are sent to indicate.

In practical application, when UE selects to rebuild cell progress wireless connection reconstruction flow in neighbor cell, mainly selected according to signal quality, therefore cell-of-origin may be chosen as reconstruction cell, Target cell may be chosen as reconstruction cell, it is also possible to choose another cell outside cell-of-origin and Target cell as reconstruction cell.

In a kind of optional implementation, source access network equipment can retain the UE data and not delete for a period of time after UE data are sent into target access network equipment.If the reconstruction access network equipment is the source access network equipment, the business of the UE is carried out using the UE data preserved；If the reconstruction access network equipment is not the source access network equipment, nor the target access network equipment, then perform the data forwarding for sending the UE to indicate, to cause the source access network equipment that the UE data of preservation are sent into the reconstruction access network equipment；If the reconstruction access network equipment is target access network equipment, UE business can be carried out using the UE data for being received from source access network equipment, belong to prior art, the embodiment of the present invention is no longer discussed in detail.

In another optional implementation, source access network equipment deletes the UE data sent immediately when UE data are sent into target access network equipment.If the reconstruction access network equipment is the source access network equipment, number is sent to the target access network equipment according to Target Cell Identifier Indicated according to forwarding；If the reconstruction access network equipment is not the source access network equipment, nor the target access network equipment, in order to obtain the UE data that Slow in target access network equipment is deposited, can take one kind in following three kinds of implementations：Radio link failure report request message is sent to the UE, and receive the radio link failure report that the UE is sent, the Target Cell Identifier is included in the radio link failure report, sending data forwarding to the target access network equipment further according to Target Cell Identifier indicates；Or, identification query messages are sent to the source access network equipment, and the Target Cell Identifier that the source access network equipment is sent is received, sending data forwarding to the target access network equipment further according to Target Cell Identifier indicates；Or, send data forwarding to the source access network equipment and indicate, to cause the source access network equipment to indicate that the target access network equipment sends the UE data to the reconstruction access network equipment.

Further, source access network equipment is by the part in UE data, i.e., described UE the first data are sent to target access network equipment, can stop sending the second data for the UE not sent to target access network equipment.So, after the first data of the UE to be sent to target access network equipment reconstruction access network equipment, UE the second data are sent to reconstruction access network equipment by source access network equipment again, and rebuilding access network equipment just can get complete UE data.

1603rd, receive the data forwarding and indicate corresponding UE data.

Wherein, based on the optional implementation described in step 1602, the reconstruction base station receives the data forwarding and indicates that corresponding UE data can be：The UE data that reception source access network equipment is sent；Or, receive the UE data of target access network equipment；Or, receive the UE of the first data post-reception source access network equipment transmission for the UE that target access network equipment is sent the second data.

Data transmission method provided in an embodiment of the present invention, by rebuilding access network equipment after the wireless connection for receiving the UE transmissions rebuilds request or wireless connection rebuilds completion message, sets to source access network Standby or target access network equipment sends data forwarding and indicated, and it is corresponding to receive data forwarding instruction

UE data, compared with rebuilding access network equipment in the prior art and can only deploy the method for new business after the completion of wireless connection reconstruction, the UE data that source access network equipment initiation switching when institute Slow is deposited can be got by rebuilding access network equipment, so as to after the completion of wireless connection reconstruction, the unfinished business processings of UE can be recovered in cell is rebuild, the up-downgoing Shuo Ju Lost for avoiding UE lose, and improve UE telecommunication service quality.Embodiment 8

The embodiment of the present invention provides a kind of data transmission method, and UE data are temporarily preserved on the access network equipment of source so that used in data forwarding, as shown in figure 17, this method includes：

1701st, source access network equipment sends switching command to UE, and the Target cell switched is specified in the switching command.

Wherein, because UE movements, serving cell signal quality can not meet communication service quality demand, or the most optimum distribution of resources of network side such as needs at the reason, the source access network equipment where UE can select suitable cell as Target cell for UE, and order UE to be switched in the Target cell.

1702nd, the Slow UE data deposited are sent to target access network equipment by source access network equipment, and retain the UE data.

Wherein, UE data can include the serial-number-state of packet and packet.Usual source access network equipment first sends the serial-number-state of the untreated complete packets of the UE to target access network equipment, then sends the untreated complete packets of the UE to target access network equipment.

Specifically, serial-number-state includes：UE is identified（), ID the ascending packet data ^ that mono- Lost loses：Poly- ten do view (Packet Data Convergence Protocol, PDCP) bad ' No. J of SDU 々 sequences and Hyper Frame Number, it is contemplated that it is descending without sequence number that target BS to be distributed（Serial Number, SN ) PDCP SDU sequence number and Hyper Frame Number.Or, serial-number-state can also include：Bit stream, each bit of bit stream represents the SDU reception conditions after the up PDCP SDU that mono- Lost loses, and 1 represents to be properly received, and 0 represents to be not successfully received.If UE successful switch is to Target cell, target access network equipment can determine the need for the data of Chong Chuan Lost mistakes, it is necessary to which which data etc. retransmitted according to these serial-number-states.

1703rd, UE handoff failures.

Wherein, UE can start a T304 timer after the switching command in 1701 is received, for judge UE whether handoff failure, when T304 timer expireds, if the random access procedure that UE is initiated to Target cell does not succeed, then judge UE handoff failures.

1704th, cell is rebuild in UE selections, is asked to access network equipment transmission wireless connection reconstruction is rebuild.Wherein, select a cell as cell is rebuild after UE handoff failures in the cell for meet cell selection conditions, asked to access network equipment transmission wireless connection reconstruction is rebuild.In actual applications, the reconstruction cell of UE selections is probably the cell under the access network equipment of source, it is also possible to the cell under target access network equipment, it is also possible to the cell under another access network equipment in addition to source access network equipment and target access network equipment.It is appreciated that, if it is the cell under target access network equipment to rebuild cell, then according to the UE data that active access network equipment transmission is preserved in switching flow target access network equipment, the unfinished controls of UE and business processing can be continued, it is prior art, is not problem to be solved by this invention.In the case that problem to be solved by this invention is not target access network equipment for reconstruction access network equipment, if it is the cell under the access network equipment of source or the cell under another access network equipment in addition to the access network equipment of source to rebuild cell, performs step 16705 and make a distinction processing.

Optionally, step 1704 can also be：Cell is rebuild in UE selections, is asked to access network equipment transmission wireless connection reconstruction is rebuild（For example：RRC Connection Reestablishment Request), rebuild access network equipment and send wireless connection reconstruction message to base station（Such as RRC Connection Reestablishment), UE sends wireless connection to the reconstruction access network equipment and rebuilds completion message (RRC Connection Reestablishment Complete), the wireless connection that reconstruction access network equipment receives UE transmissions re-establishes completion message, shows process of reconstruction success.Access network equipment is rebuild after wireless connection reconstruction completion message is received, step 1705 is performed.

If the 1705, the reconstruction access network equipment is the source access network equipment, step 1706 is performed;If the reconstruction access network equipment is not the source access network equipment, step 1707 is performed.

It should be noted that：Whether reconstruction access network equipment can be source access network equipment or target access network equipment by prior art determination reconstruction access network equipment or be other access network equipments in addition to source access network equipment and target access network equipment, it is exemplified below how reconstruction access network equipment determines whether it is source access network equipment or target access network equipment, because said process is the realization of equipment, the present invention is not limited.

Forwarded specifically, rebuilding access network equipment and no matter rebuilding request trigger data by wireless connection, or rebuilding completion message trigger data by wireless connection forwards, and can determine to rebuild whether access network equipment is the source access network equipment；Rebuild in wireless connection in request comprising cell-of-origin mark.Wherein, it is that source access network equipment is exactly the situation of cell-of-origin including rebuilding cell to rebuild access network equipment, but is not meant to that it must be cell-of-origin to rebuild cell, because some access network equipments can safeguard multiple cells simultaneously.Specifically, the cell ID for rebuilding one or more cells that access network equipment can be safeguarded cell-of-origin mark with itself is matched；If the arbitrary cells that cell-of-origin is identified with rebuilding access network equipment are identified, the match is successful, then it represents that it is source access network equipment to rebuild access network equipment；Conversely, if the arbitrary cells of cell-of-origin mark and reconstruction access network equipment are identified, it fails to match, then it represents that it is not source access network equipment to rebuild access network equipment.

Specifically, rebuilding access network equipment determines whether that target access network equipment method can be：Rebuild the wireless connection that is sent according to UE of access network equipment rebuild the cell-of-origin mark that is carried in request and UE is identified, it is determined that rebuilding whether access network equipment performed switching set-up procedure for the UE.Wherein it is for the switching set-up procedure of the UE：The corresponding handover requests of the UE that source access network equipment is sent are received, and the corresponding Handover Request Acknowledges of the UE are transmitted across to source access network equipment（ACK) message.If rebuild access network equipment performed switching set-up procedure for the UE, it is determined that reconstruction access network equipment is target access network equipment；If conversely, rebuilding the switching set-up procedure that access network equipment is not carried out being directed to the UE, the reconstruction access network equipment is not target access network equipment.Said process is the realization of equipment, and the present invention is not limited.

1706th, the business processing that access network equipment carries out the UE using the UE data preserved is rebuild.

Wherein, because source access network equipment is after initiating switching and UE data are sent into target access network equipment, also UE data can be preserved a period of time, therefore when the UE reconstruction access network equipments selected are exactly source access network equipment, UE business can be carried out using the UE data preserved by rebuilding access network equipment.

Further, because the UE reconstruction access network equipments selected may not also be source access network equipment, in order to avoid the excessive memory space for taking source access network equipment, the utilization ratio of storage resources of raising source access network equipment, source access network equipment is when the preservation UE data reach scheduled duration, and the UE data are deleted in triggering.The scheduled duration can be manually set according to actual needs, and such as scheduled duration can be 1000 milliseconds（Ms) etc..The triggering timing device when UE data are sent to target access network equipment by source access network equipment, do not judge that it is source access network equipment to rebuild access network equipment during 1000ms if being reached during timer, and also it is not received by and rebuilds the data forwarding instruction that access network equipment is sent, then the UE data is deleted in triggering.

Optionally, source access network equipment can also be after receiving the target access network equipment or rebuilding the deletion triggering message of access network equipment, and the UE data are deleted in triggering.The deletion triggering disappears Ceasing to be：The context release message identified comprising the UE sent when UE is switched successfully or re-established successfully by target access network equipment or reconstruction access network equipment（ context release message );

1707th, rebuild access network equipment and send data forwarding instruction to the source access network equipment.

For example, the data forwarding indicates to indicate for existing Radio Link Failure.Radio Link Failure is included in indicating：The Physical Cell Identifier of the cell of Radio Link Failure, the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI of Cell Global Identification and UE in cell-of-origin for rebuilding cell（ Cell Radio Network Temporary Identifier, C-RNTI ).

Wherein, it can also be customized new form that the data forwarding, which is indicated,.The data forwarding is included in indicating：UE is identified.The UE marks can be C-RNTIs of the UE in cell-of-origin.The wireless connection that rebuilding access network equipment can send from UE, which is rebuild in request, acquires the UE marks.Further, it can succeed to access network equipment reply UE data are rebuild for the ease of source access network equipment, can also be included in data forwarding instruction：Rebuild cell ID and/or retransmitting paramater.Wherein described cell ID of rebuilding can be the Physical Cell Identifier for rebuilding cell（Physical Cell Identifier, PCI), it is either the Cell Global Identification rebuild the Physical Cell Identifier of cell and the frequency information of reconstruction cell or can also be reconstruction cell（E-UTRAN Cell Global Identifier, ECGI), wherein E-UTRAN Chinese full name is the Universal Terrestrial wireless access network of evolution, and English full name is Evolved Universal Terrestrial Radio Access Network.Wherein retransmitting paramater includes the E-RAB lists of the UE, is included in E-RAB lists：The E-RAB marks of the UE, the up general data transfer platform for rebuilding cell（General Data Transfer Platform, GTP) endpoint of a tunnel and descending GTP tunnel end points.Wherein GTP tunnel end points includes rebuilding the transport Layer address and Tunnel End Point Identifier of access network equipment（ Tunnel Endpoint Identity, TEID ).

In the present embodiment, following steps 1708- 1709 is optional step, if source access network equipment It can determine to rebuild the transmission tunnel of cell after data forwarding is indicated receiving, then can not perform step 1708-1709 and directly perform step 1610 to reconstruction access network equipment transmission UE data., whereas if source access network equipment is after data forwarding instruction is received, it is impossible to it is determined that rebuilding the transmission tunnel of cell, then need first to obtain the retransmitting paramater needed for forwarding UE data.

1708th, source access network equipment sends data forwarding request to access network equipment is rebuild.

In the present embodiment, step 1708 is optional step, the retransmitting paramater can be carried in step 1707 is sent to source access network equipment in data forwarding instruction, retransmitting paramater can also be sent to by source access network equipment by step 1709 again after step 1707, the retransmitting paramater can also be asked by source access network equipment as described in step 1708 and 1709.Wherein, in the data forwarding request comprising UE in the C-RNTI of cell-of-origin, can also further include the ECGI of cell-of-origin, or cell-of-origin PCI, or cell-of-origin frequency and the PCI of cell-of-origin.So, parameter needed for needing to send which UE data forwarding in step 1709 can just be determined by data forwarding request by rebuilding access network equipment, be sent to which cell.

1709th, rebuild access network equipment and the retransmitting paramater needed for forwarding the UE data is sent to the source access network equipment.

Wherein, retransmitting paramater can include E-UTRAN RABs (E-UTRAN Radio Access Bearer, E-RAB) list of the UE.Wherein included in E-RAB lists：Rebuild the E-RAB marks of cell, rebuild the up general data transfer platform of cell（General Data Transfer Platform, GTP) endpoint of a tunnel and descending GTP tunnel end points.Wherein GTP Tunnel End Point Identifiers include rebuilding the transport Layer address and Tunnel End Point Identifier of access network equipment（ Tunnel Endpoint Identity, TEID ).

1710th, source access network equipment sends the UE data that the source access network equipment is preserved to access network equipment is rebuild. Wherein, source access network equipment can send UE data by information such as the marks and Tunnel End Point Identifier of the reconstruction cell obtained to access network equipment is rebuild.Specifically, first can transmit Sequence Number state to rebuilding access network equipment, the packet for the UE that Slow is deposited is retransmited.

1711st, the business processing that access network equipment carries out the UE using the UE data is rebuild.Wherein, UE can start new business in cell is rebuild, unfinished business in cell-of-origin can also be continued rebuilding cell relays, for example, the upstream data bag that the UE continued to after the UE upstream data bags that Slow has been deposited on the access network equipment of source is sent, or the downlink data packet that the gateway for being not issued to UE is issued continue to be handed down to UE etc..

Data transmission method provided in an embodiment of the present invention, UE data are preserved by a period of time by source access network equipment, reconstruction access network equipment is allowd to obtain UE data by source access network equipment, compared with rebuilding access network equipment in the prior art and can only deploy the method for new business after the completion of wireless connection reconstruction, the UE data that source access network equipment initiation switching when institute Slow is deposited can be got by rebuilding access network equipment, so as to after the completion of wireless connection reconstruction, the unfinished business processings of UE can be recovered in cell is rebuild, the up-downgoing Shuo Ju Lost for avoiding UE lose, improve UE telecommunication service quality.Embodiment 9

The embodiment of the present invention provides a kind of data transmission method, and the Slow UE data deposited are sent to after target access network equipment by source access network equipment, do not preserve the UE data on the access network equipment of source, as shown in figure 18, this method includes：

1801st, source access network equipment initiates switching flow, and order UE is switched to the Target cell specified.

1802nd, the Slow UE data deposited are sent to target access network equipment by source access network equipment, and delete the UE data sent. 1803rd, UE handoff failures

In the present embodiment, step 1801- 1803 flow is similar with step 1801- 1803 flow, is no longer described in detail.Unlike, while source access network equipment sends UE data in the present embodiment, the UE data sent can be deleted immediately.That is, when source access network equipment have sent a part of UE data to target access network equipment, source access network equipment has deleted part UE data, and only remains with the part UE data not sent；If source access network equipment have sent the UE data that all UE have been deleted on whole UE data, source access network equipment to target access network equipment.

1804th, cell is rebuild in UE selections, is asked to access network equipment transmission wireless connection reconstruction is rebuild.Optionally, step 1804 can also be：Cell is rebuild in UE selections, and request (such as RRC connection reestablishment request) is rebuild to access network equipment transmission wireless connection is rebuild, and is rebuild access network equipment and is sent wireless connection reconstruction message to UE（Such as RRC connection reestablishment), UE sends wireless connection to the reconstruction access network equipment and rebuilds completion message（^ mouthfuls of RRC connection reestablishment complete of example), rebuild access network equipment ^:Completion message is rebuild to the wireless connection that UE is sent, shows process of reconstruction success.Access network equipment is rebuild after wireless connection reconstruction completion message is received, step 1805 is performed.

If the 1805, the reconstruction access network equipment is the source access network equipment, step 1806 is performed;If the reconstruction access network equipment is not that the source access network equipment optionally performs step 1808- 1809, either optionally performs step 1810- 1811 or optionally perform step 1812- 17813.

It is corresponding with step 1805, no matter request trigger data is rebuild by wireless connection and forwarded, or rebuilding completion message trigger data by wireless connection forwards, and can determine to rebuild whether access network equipment is the source access network equipment.For example, the cell-of-origin mark included in request can be rebuild from wireless connection by rebuilding access network equipment, cell-of-origin is identified and matched with rebuilding the mark of access network equipment itself, it is determined that rebuilding whether access network equipment is source access network equipment. 1806th, rebuild access network equipment and data forwarding instruction is sent to the target access network equipment according to Target Cell Identifier.

Wherein, because Target cell is selected for UE by source access network equipment, therefore preserve UE Target Cell Identifier on the access network equipment of source, the Target Cell Identifier can for Target cell Physical Cell Identifier or the overall identification etc. of Target cell.

If it is the source access network equipment to rebuild access network equipment, rebuilds and Target Cell Identifier is preserved on access network equipment, but UE data are sent to target access network equipment after initiating switching flow, and delete UE data.Therefore rebuilding access network equipment can indicate according to the Target Cell Identifier preserved before to target access network equipment transmission data forwarding.If it is not the source access network equipment to rebuild access network equipment, after access network equipment acquisition Target Cell Identifier is rebuild, data forwarding is sent to target access network equipment to indicate, the specific method for obtaining Target Cell Identifier may be referred to step 1808-1809, or step 1810- 1811.

Specifically, being included in rebuilding the data forwarding instruction that access network equipment is sent to target access network equipment：UE is identified.The UE marks can be C-RNTIs of the UE in cell-of-origin, can be UE distribution between source access network equipment and target access network equipment cell-of-origin interface identifier, can also for UE Target cell C-RNTI, can also be UE distribution between source access network equipment and target access network equipment Target cell interface identifier.Wherein, the C-RNTI and cell-of-origin interface identifier of cell-of-origin can be carried when source access network equipment initiates to switch and target access network equipment are sent in handover request, and such target access network equipment can recognize UE data by the C-RNTI or cell-of-origin interface identifier of cell-of-origin.And the C-RNTI and Target cell interface identifier of Target cell can be carried by target access network equipment and source access network equipment are sent in switching request response.Further, it can succeed to access network equipment reply UE data are rebuild for the ease of target access network equipment, the retransmitting paramater rebuild cell ID and/or rebuild cell can also be included in data forwarding instruction. Wherein retransmitting paramater includes the E-RAB lists of the UE.The reconstruction cell ID can be the PCI for rebuilding cell and the frequency for rebuilding cell, or rebuild the ECGI of cell.Included in the E-RAB lists：Rebuild the E-RAB marks of cell, rebuild the up GTP tunnel end points and descending GTP endpoint of a tunnels of cell.

1807th, rebuild access network equipment and receive the UE data that the target access network equipment is sent.Wherein, because UE data can be sent to target access network equipment by source access network equipment after switching is initiated, if the UE sent the first data can be sent to reconstruction access network equipment by the source access network equipment as access network equipment, target access network equipment is rebuild.

The transmission of UE data is a process, the total data of the UE includes the first data of the UE and UE second data two parts, the first data that the part UE data that source access network equipment has been issued to the target access network equipment are the UE, the second data that the part UE data that the source access network equipment is not issued to the target access network equipment are UE.

In the present embodiment, if the reconstruction access network equipment is the source access network equipment, rebuilding after access network equipment receives the wireless connection reconstruction request that the UE is sent or prior to or while step 1806, rebuild the second data that access network equipment stops sending the UE to target access network equipment, then it is described to rebuild the first data that access network equipment receives the UE that target access network equipment is sent.

If the reconstruction access network equipment is not the source access network equipment, described to rebuild the data that access network equipment receives the UE that Target cell is sent.Further, UE data can be the total data of the UE or the first data of the UE.Specifically, the total data or the first data of rebuilding the UE that access network equipment reception Target cell is sent are determined by the forwarding of source access network equipment.If the total data of the UE is forwarded to target access network equipment by source access network equipment, the total data that access network equipment receives the UE that target access network equipment is sent is rebuild； If source access network equipment rebuilds the first data that access network equipment receives the UE that target access network equipment is sent only by the first data forwarding of the UE to target access network equipment.

In the first implementation, if the reconstruction access network equipment is not that the source access network equipment can perform step 1808-1809, Target Cell Identifier can be obtained by UE by rebuilding access network equipment, so as to obtain UE data by target access network equipment.It should be noted that in Figure 18 only at picture the first implementation flow chart, second and do not drawn in figure 18 with explanatory note the step of the third implementation.

1808th, rebuild access network equipment and send radio link failure report request message to the UE.Wherein, UE can rebuild carrying radio link failure report in completion message in wireless connection can use instruction, because UE can carry the Target Cell Identifier of handoff failure in radio link failure report, radio link failure report request message can be sent to UE by rebuilding access network equipment, to inquire about UE be switched failure in which cell.

1809th, rebuild access network equipment and receive the radio link failure report that the UE is sent（Radio Link Failure, RLF report), the Target Cell Identifier is included in the radio link failure report.

Wherein, the Target Cell Identifier of failure is set up comprising UE wireless connections in radio link failure report.Rebuild access network equipment to obtain after Target Cell Identifier, perform step 1806-1807, sending data forwarding to target access network equipment indicates, and receives the total data for the UE that the target access network equipment is sent.Unlike, in this implementation data forwarding indicate in include UE mark only can for UE cell-of-origin C-RNTI or UE Target cell C-RNTI.The wherein C-RNTI of Target cell can be obtained from the radio link failure report that UE is reported.

In another second implementation, if the reconstruction access network equipment is not the source access network equipment, step 1810-1811 is can also carry out, mesh can be obtained by source access network equipment by rebuilding cell Cell ID is marked, so as to obtain UE data by target access network equipment.

1810th, rebuild access network equipment and send identification query messages to the source access network equipment.

Wherein, the content of the identification query messages is indicated with the data forwarding described in above-mentioned steps 1807 or radio link failure instruction is identical, and Target Cell Identifier specified when UE switches is initiated for indicating that source access network equipment is sent to reconstruction access network equipment.

1811st, rebuild access network equipment and receive the Target Cell Identifier that the source access network equipment is sent.

Wherein, rebuild access network equipment to obtain after Target Cell Identifier, perform step 1706-1707, sending data forwarding to target access network equipment indicates, and receives the total data for the UE that the target access network equipment is sent.Unlike, in this implementation data forwarding indicate in include UE mark only can for UE cell-of-origin C-RNTI or UE Target cell C-RNTI.The wherein C-RNTI of Target cell can be obtained from the radio link failure report that UE is reported.Or, in order to save transfer resource, source access network equipment is after the identification query messages in receiving step 1810, the second data of the UE can be stopped sending to the target access network equipment, after the first data for rebuilding the UE that access network equipment receives target access network equipment by step 1707, the second data for the UE that source access network equipment is sent are continued to.

Rebuild specifically, source access network equipment is received after the identification query messages that base station is sent, stop sending UE data to target access network equipment immediately, generate an end mark（End Marker) and it is sent to target access network equipment.The request that target access network equipment should rebuild access network equipment will start to the first data for rebuilding the access network equipment transmission UE.Target access network equipment sends data forwarding completion message after the first data of the UE have been sent according to end mark judgement to source access network equipment, is identified in the data forwarding completion message comprising UE, or can also include Target Cell Identifier.Source access network equipment is received after data forwarding completion message, is set to access network is rebuild Preparation send UE the second data, so, and rebuilding access network equipment just can receive whole UE data.In the third implementation, if the reconstruction access network equipment is not the source access network equipment, step 1812-1813 is can also carry out, target access network equipment is indicated by source access network equipment so that target access network equipment sends UE data to access network equipment is rebuild.

1812nd, rebuild access network equipment and send data forwarding instruction to the source access network equipment.

Wherein, the data forwarding in step 1812 is indicated with, according to forwarding instruction or Radio Link Failure instruction identical, being no longer described in detail here described in step 1707.

1813rd, source access network equipment indicates that the target access network equipment sends the UE data to the reconstruction access network equipment.

Wherein, due to preserving Target Cell Identifier on the access network equipment of source, therefore Target Cell Identifier can not also be sent to access network equipment is rebuild, but directly indicate the data forwarding received in step 1812 to be transmitted to target access network equipment, send UE data to indicate target access network equipment to access network equipment is rebuild.After step 1813, step 1807 is performed.

Further, in order to save transfer resource, source access network equipment is after the data forwarding in receiving step 1812 is indicated, the second data of the UE can be stopped sending to the target access network equipment, rebuild after the first data that access network equipment receives the UE that target access network equipment is returned by step 1807, continue to the second data for the UE that source access network equipment is sent.Specific implementation is similar with the method described in step 1811, is not repeated herein and repeats.

Data transmission method provided in an embodiment of the present invention, by rebuilding access network equipment after the wireless connection for receiving the UE transmissions rebuilds request or wireless connection rebuilds completion message, data forwarding is sent to source access network equipment or target access network equipment to indicate, and receive the corresponding UE data of data forwarding instruction, compared with rebuilding access network equipment in the prior art and can only deploy the method for new business after the completion of wireless connection reconstruction, when reconstruction access network equipment can get source access network equipment initiation switching UE data that institute Slow is deposited, so that after the completion of wireless connection reconstruction, the unfinished business processings of UE can be recovered in cell is rebuild, it is to avoid UE up-downgoing Shuo Ju Lost lose, and improve UE telecommunication service quality.Embodiment 10

The embodiment of the present invention provides a kind of access network equipment 1900, can be as access network equipment is rebuild, and as shown in figure 19, the access network equipment 1900 can include：

Acquiring unit 1901, for being switched to target access network equipment when source access network equipment instruction user equipment UE, and after the UE handoff failures, when accessing the reconstruction access network equipment, obtain the information of the source access network equipment or the target access network equipment；

Transmitting element 1902, for the source access network equipment or the information of target access network equipment obtained according to the acquiring unit 1901, sends the corresponding data forwardings of the UE to the source access network equipment or the target access network equipment and indicates；

Receiving unit 1903, the data for receiving the UE that the source access network equipment or the target access network equipment indicate to send according to the data forwarding；Or, receive the data for the UE that the source access network equipment indicates to notify the target access network equipment to send according to the data forwarding.

Further alternative, the data of the UE are sent to after the target access network equipment by the source access network equipment, are stored in the source access network equipment, wherein,

The acquiring unit 1901 specifically for：Obtain the information of the source access network equipment；The transmitting element 1902 specifically for：The information of the source access network equipment obtained according to the acquiring unit, sends the corresponding data forwardings of the UE to the source access network equipment and indicates；

The receiving unit 1903 specifically for：The source access network equipment is received according to the data Forwarding indicates its UE preserved sent data.

Further alternative, the data of the UE are sent to after the target access network equipment by the source access network equipment deletes out of described source access network equipment, wherein,

The receiving unit 1903 specifically for：Receive the data for the UE that the source access network equipment indicates to notify the target access network equipment to send according to the data forwarding.

Further alternative, the receiving unit 1903 is additionally operable to receive the wireless connection reconstruction message that the UE is sent, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment；

The acquiring unit 1901, obtains the information of the source access network equipment in rebuilding message specifically for the wireless connection received from the receiving unit 1903.

Further alternative, the data of the UE are sent to the target access network equipment by the source access network equipment, wherein,

The acquiring unit 1901 specifically for：Obtain the information of the target access network equipment；The transmitting element 1902 specifically for：The information of the target access network equipment obtained according to the acquiring unit, sends the corresponding data forwardings of the UE to the target access network equipment and indicates；The receiving unit 1903 specifically for：Receive the data for the UE that the target access network equipment indicates to send according to the data forwarding.

Further alternative, the receiving unit 1903 is additionally operable to receive the radio link failure report that the UE is sent, wherein the radio link failure report includes the information of the target access network equipment； The acquiring unit 1901, the information specifically for obtaining the target access network equipment in the radio link failure report that is received from the receiving unit 1903.

Further alternative, the receiving unit 1901 is additionally operable to receive the wireless connection reconstruction message that the UE is sent, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment；

The transmitting element 1902, is additionally operable to the information of source access network equipment received according to the receiving unit 1903, and sending data forwarding to the source access network equipment indicates；

The receiving unit 1903, is additionally operable to receive the data forwarding conversion message that the source access network equipment indicates to send according to the data forwarding, the data forwarding conversion message includes the information of the target access network equipment；

The acquiring unit 1901 obtains the information of the target access network equipment in changing message specifically for the data forwarding received from the receiving unit 1903.

Further alternative, the data forwarding is designated as Radio Link Failure instruction.

Further alternative, the data forwarding indicates to include：The mark of the UE.

Further alternative, the data forwarding indicates also to include：Rebuild cell ID.

Further alternative, the data forwarding indicates also to include：The RAB E-RAB information of evolved universal terrestrial radio access network.

Access network equipment provided in an embodiment of the present invention, when UE is switched to Target cell failure, the data of the UE can be obtained from source access network equipment or target access network equipment by rebuilding access network equipment, compared with rebuilding access network equipment in the prior art and can not obtain the data of the UE, the U E obtained data can be utilized by rebuilding access network equipment, continue the business that U E are not completed in cell-of-origin, so as to improve UE telecommunication service quality. Embodiment 11

The embodiment of the present invention provides a kind of access network equipment 2000, can be as source access network equipment, and as shown in figure 20, the access network equipment 2000 can include：

Transmitting element 2001, for sending switching command to user equipment (UE), the switching command includes the information of Target cell；

The transmitting element 2001, is additionally operable to being sent to the Slow UE deposited data into the target access network equipment where the Target cell；

Receiving unit 2002, for when the UE handoff failures after, when access network equipment is rebuild in access, receives and described rebuild the data forwarding that access network equipment sends and indicate；

The transmitting element 2001, is additionally operable to when the source access network equipment preserves the data for the UE for being sent to the target access network equipment, is indicated according to the data forwarding, and the data of the UE are sent to the reconstruction access network equipment；Or,

When the source access network equipment does not preserve the data for the UE for being sent to the target access network equipment, the transmitting element 2001 is additionally operable to according to data forwarding instruction, notifies the target access network equipment to send the data of the UE to the reconstruction access network equipment；Or,

The transmitting element 2001 is additionally operable to be indicated according to the data forwarding, the information of the target access network equipment is sent to the reconstruction access network equipment, so that the reconstruction access network equipment obtains the data of the UE according to the information of the target access network equipment from the target access network equipment.

Further alternative, the access network equipment also includes：

After memory cell 2003, the target access network equipment where for being sent to the Target cell in the data for the UE that the transmitting element 2001 deposits Slow, the data for the UE for being sent to the target access network equipment are preserved.

Further alternative, the access network equipment also includes： Unit 2004 is deleted, for when the data that the memory cell 2004 preserves the UE reach preset time, deleting preserved UE data.

Or, the deletion unit 2004 during context release message for receiving the UE when the receiving unit 2002, deletes preserved UE data.

Further alternative, the transmitting element 2001 notifies the target access network equipment to send the data of the UE to the reconstruction access network equipment by data forwarding request lmessage, wherein, the data forwarding request lmessage includes the mark of the UE.

Further alternative, the data forwarding request lmessage also includes rebuilding cell ID.

Further alternative, the data forwarding request lmessage also includes：The wireless access 7 of evolved universal terrestrial radio access network carries E-RAB information.

Further alternative, the transmitting element 2001 changes the information that message sends the target access network equipment to the reconstruction access network equipment by data forwarding.

Access network equipment 2000 provided in an embodiment of the present invention, when UE is switched to Target cell failure, the data of the UE can be obtained from source access network equipment or target access network equipment by rebuilding access network equipment, compared with rebuilding access network equipment in the prior art and can not obtain the data of the UE, the UE obtained data can be utilized by rebuilding access network equipment, continue the business that UE is not completed in cell-of-origin, so as to improve UE telecommunication service quality.Embodiment 12 The embodiment of the present invention provides a kind of access network equipment 2100, can be as target access network equipment, and as shown in figure 21, the access network equipment 2100 can include：

Receiving unit 2101, for when source access network equipment instruction user equipment UE is switched to target access network equipment, receiving the data for the UE that the source access network equipment Slow is deposited；

The receiving unit 2101, is additionally operable to, when the UE handoff failures and access reconstruction access network equipment, receive the data forwarding request lmessage that the data forwarding for rebuilding access network equipment transmission indicated or received the source access network equipment transmission；

Transmitting element 2102, the data forwarding for being received according to the receiving unit 2101 is indicated or the data forwarding request lmessage, and received UE data are sent to the reconstruction access network equipment.

Further alternative, the data forwarding request lmessage includes the mark of the UE.

Access network equipment 2100 provided in an embodiment of the present invention, when UE is switched to Target cell failure, the data of the UE can be obtained from source access network equipment or target access network equipment by rebuilding access network equipment, compared with rebuilding access network equipment in the prior art and can not obtain the data of the UE, the UE obtained data can be utilized by rebuilding access network equipment, continue the business that UE is not completed in cell-of-origin, so as to improve UE telecommunication service quality. Embodiment 13

The embodiment of the present invention provides a kind of access network equipment 2200, and the access network equipment 2200 can be as access network equipment be rebuild, and as shown in figure 22, the access network equipment 2200 includes：First interface circuit 2201, second interface circuit 2202, memory 2203 and processor 2204.Wherein, first interface circuit 2201, second interface circuit 2202 and memory 2203 are connected with processor 2204 respectively.First interface circuit 2201 is used for and UE communication；Second interface circuit 2202 is used to communicate with other access network equipments；Memory 2203 is used to preserve data.

Optionally, if the data of the UE are sent to after the target access network equipment by the source access network equipment, it is stored in the source access network equipment, processor 2204 can be used for the information that the source access network equipment is obtained by first interface circuit 2201；And by information of the second interface circuit 2202 according to the source access network equipment, send the corresponding data forwardings of the UE to the source access network equipment and indicate；And the data for its UE preserved that the source access network equipment indicates to send according to the data forwarding are received by second interface circuit 2202.

Optionally, if the data of the UE are sent to after the target access network equipment by the source access network equipment and deleted out of described source access network equipment, the processor 2204 is additionally operable to obtain the information of the source access network equipment by first interface circuit 2201；According to the information of the source access network equipment, the corresponding data forwardings of the UE are sent to the source access network equipment by second interface circuit 2202 and indicated；And the data for the UE that the source access network equipment indicates to notify the target access network equipment to send according to the data forwarding are received by second interface circuit 2202.

Specifically, the processor 2204 is used to receive the wireless connection reconstruction message that the UE is sent by first interface circuit 2201, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment；And the information of the source access network equipment is obtained from wireless connection reconstruction message. Optionally, the data of the UE are sent to the target access network equipment by the source access network equipment, and the processor 2204 is used for the information that the target access network equipment is obtained by first interface circuit 2201；According to the information of the target access network equipment, the corresponding data forwardings of the UE are sent to the target access network equipment by second interface circuit 2202 and indicated；And the data for the UE that the target access network equipment indicates to send according to the data forwarding are received by second interface circuit 2202.

Specifically, further alternative, the processor 2204 is used to receive the radio link failure report that the UE is sent by the first interface circuit 2201, wherein the radio link failure report includes the information of the target access network equipment；And the information of the target access network equipment is obtained from the radio link failure report.

Further alternative, the processor 2204 is used to receive the wireless connection reconstruction message that the U E are sent by first interface circuit 2201, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment；According to the information of the source access network equipment, data forwarding is sent to the source access network equipment by second interface circuit 2202 and indicated；And the data forwarding conversion message that the source access network equipment indicates to send according to the data forwarding is received by second interface circuit 2202, data forwarding conversion message includes the information of the target access network equipment, and obtains from the data forwarding conversion message information of the target access network equipment.

Further, the data forwarding is designated as Radio Link Failure instruction.

Further, the data forwarding indicates to include：The mark of the UE.

Further, the data forwarding indicates also to include：Rebuild cell ID.

Further, the data forwarding indicates also to include：The wireless access 7 of evolved universal terrestrial radio access network carries E-RAB information.

Access network equipment 2200 provided in an embodiment of the present invention, when UE is switched to Target cell failure When, the data of the UE can be obtained from source access network equipment or target access network equipment by rebuilding access network equipment, compared with rebuilding access network equipment in the prior art and can not obtain the data of the UE, the UE obtained data can be utilized by rebuilding access network equipment, continue the business that UE is not completed in cell-of-origin, so as to improve UE telecommunication service quality.Embodiment 14

The embodiment of the present invention provides a kind of access network equipment 2300, and the access network equipment 2300 can be as target access network equipment, and as shown in figure 23, the access network equipment 2300 includes：First interface circuit 2301, second interface circuit 2302, memory 2303 and processor 2304.Wherein, first interface circuit 2301, second interface circuit 2302 and memory 2303 are connected with processor 2304 respectively.First interface circuit 2301 is used for and UE communication；Second interface circuit 2302 is used to communicate with other access network equipments；Memory 2303 is used to preserve data.

The processor 2304 is used for when source access network equipment instruction user equipment UE is switched to target access network equipment, and the data for the UE that the source access network equipment Slow is deposited are received by second interface circuit 2302；When the UE handoff failures and access reconstruction access network equipment, the data forwarding for receiving the reconstruction access network equipment transmission by second interface circuit 2302 indicates or received the data forwarding request lmessage that the source access network equipment is sent；Indicated according to the data forwarding or the data forwarding request lmessage, send received UE data to the reconstruction access network equipment by second interface circuit 2302.

Further, the data forwarding request lmessage includes the mark of the UE.

Further, the data forwarding request lmessage also includes rebuilding cell ID.

The data forwarding request lmessage also includes：The RAB E-RAB information of evolved universal terrestrial radio access network. Access network equipment 2300 provided in an embodiment of the present invention, when UE is switched to Target cell failure, the data of the UE can be obtained from target access network equipment by rebuilding access network equipment, compared with rebuilding access network equipment in the prior art and can not obtain the data of the UE, the UE obtained data can be utilized by rebuilding access network equipment, continue the business that UE is not completed in cell-of-origin, so as to improve UE telecommunication service quality.

It is apparent to those skilled in the art that, it is clean for the convenience and cylinder of description, only it is illustrated with the division of above-mentioned each functional module, in practical application, it can as needed and by above-mentioned functions distribute and be completed by different functional modules, the internal structure of device is divided into different functional modules, to complete all or part of function described above.The specific work process of the system, apparatus, and unit of foregoing description, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.

In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be realized by another way.For example, device embodiment described above is only schematical, for example, the division of the module or unit, it is only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can combine or be desirably integrated into another system, or some features can be ignored, or do not perform.Another, it, by some interfaces, the INDIRECT COUPLING or communication connection of device or unit, can be electrical, machinery or other forms that shown or discussed coupling or direct-coupling or communication connection each other, which can be,.

The unit illustrated as separating component can be or may not be physically separate, and the part shown as unit can be or may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.

In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit In or unit be individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.

If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or in use, can be stored in a computer read/write memory medium.Understood based on such, the part or all or part of the technical scheme that technical scheme substantially contributes to prior art in other words can be embodied in the form of software product, the computer software product is stored in a storage medium, including some instructions are to cause a computer equipment（Can be personal computer, server, or network equipment etc.）Or processor（Processor all or part of step of each embodiment methods described of the invention) is performed.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage（ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.

Described above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although the present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part technical characteristic；And these modifications or replacement, appropriate technical solution is departed from the scope of various embodiments of the present invention technical scheme.

Claims

Claims

1st, a kind of data transmission method, when source, access network equipment instruction user equipment UE is switched to after target access network equipment, and the UE handoff failures, when access network equipment is rebuild in access, it is characterised in that this method includes：

It is described to rebuild the information that access network equipment obtains the source access network equipment or the target access network equipment；

According to the source access network equipment or the information of the target access network equipment, send the corresponding data forwardings of the UE to the source access network equipment or the target access network equipment and indicate；

Receive the data for the UE that the source access network equipment or the target access network equipment indicate to send according to the data forwarding；Or, receive the data for the UE that the source access network equipment indicates to notify the target access network equipment to send according to the data forwarding.

2nd, according to the method described in claim 1, it is characterised in that the data of the UE are sent to after the target access network equipment by the source access network equipment, it is stored in the source access network equipment, and methods described is specifically included：

It is described to rebuild the information that access network equipment obtains the source access network equipment；

According to the information of the source access network equipment, send the corresponding data forwardings of the UE to the source access network equipment and indicate；

The source access network equipment is received according to the data forwarding indicates its preservation of transmission

UE data.

3rd, according to the method described in claim 1, it is characterised in that the data of the UE by the source access network equipment be sent to after the target access network equipment out of described source access network equipment delete, and, methods described is specifically included：

It is described to rebuild the information that access network equipment obtains the source access network equipment； The information that access network equipment is rebuild according to the source access network equipment, sends the corresponding data forwardings of the UE to the source access network equipment and indicates；

Receive the data for the UE that the source access network equipment indicates to notify the target access network equipment to send according to the data forwarding.

4th, the method according to any one of claims 1 to 3, it is characterised in that the reconstruction access network equipment obtains the information of the source access network equipment, including：

The access network equipment of rebuilding receives the wireless connection reconstruction message that the UE is sent, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment；

The information of the source access network equipment is obtained from wireless connection reconstruction message.

5th, according to the method described in claim 1, it is characterised in that the data of the UE are sent to the target access network equipment by the source access network equipment, and, methods described is specifically included：

It is described to rebuild the information that access network equipment obtains the target access network equipment；

According to the information of the target access network equipment, send the corresponding data forwardings of the UE to the target access network equipment and indicate；

Receive the data for the UE that the target access network equipment indicates to send according to the data forwarding.

6th, method according to claim 5, it is characterised in that the reconstruction access network equipment obtains the information of target access network equipment, including：

The access network equipment of rebuilding receives the radio link failure report that the UE is sent, wherein the radio link failure report includes the information of the target access network equipment；

The information of the target access network equipment is obtained from the radio link failure report.

7th, method according to claim 5, it is characterised in that the reconstruction access network equipment obtains the information of target access network equipment, including： The access network equipment of rebuilding receives the wireless connection reconstruction message that the UE is sent, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment；

According to the information of the source access network equipment, send data forwarding to the source access network equipment and indicate；

Receive the source access network equipment and indicate that the data forwarding sent changes message according to the data forwarding, the data forwarding conversion message includes the information of the target access network equipment；

The information of the target access network equipment is obtained from data forwarding conversion message.

8th, the method according to any one of claim 1 to 7, it is characterised in that the data forwarding is designated as Radio Link Failure instruction.

9th, the method according to any one of claim 1 to 7, it is characterised in that the data forwarding indicates to include：The mark of the UE.

10th, method according to claim 9, it is characterised in that the data forwarding indicates also to include：Rebuild cell ID.

11st, the method according to claim 9 or 10, it is characterised in that the data forwarding indicates also to include：The wireless access 7 of evolved universal terrestrial radio access network carries E-RAB information.

12nd, a kind of data transmission method, it is characterised in that including：

Source access network equipment sends switching command to user equipment (UE), and the switching command includes the information of Target cell；

The Slow UE deposited data are sent to the target access network equipment where the Target cell by the source access network equipment；

After the UE handoff failures, when access network equipment is rebuild in access, receive the data forwarding for rebuilding access network equipment transmission and indicate；

Preserved when the source access network equipment and be sent to the UE of the target access network equipment During data, indicated according to the data forwarding, the data of the UE are sent to the reconstruction access network equipment；Or,

When the source access network equipment does not preserve the data for the UE for being sent to the target access network equipment, indicated according to the data forwarding, notify the target access network equipment to send the data of the UE to the reconstruction access network equipment；Or,

Indicated according to the data forwarding, the information of the target access network equipment is sent to the reconstruction access network equipment, so that the reconstruction access network equipment obtains the data of the UE according to the information of the target access network equipment from the target access network equipment.

13rd, method according to claim 12, it is characterised in that after the target access network equipment that is sent to where the Target cell of data for the UE that the source access network equipment deposits Slow, in addition to：

Preserve the data for the UE for being sent to the target access network equipment.

14th, method according to claim 13, it is characterised in that also include：

When the data that the source access network equipment preserves the UE reach preset time, preserved UE data are deleted.

15th, method according to claim 13, it is characterised in that also include：

When the source access network equipment receives the context release message of the UE, preserved UE data are deleted.

16th, method according to claim 12, it is characterized in that, the source access network equipment notifies the target access network equipment to send the data of the UE to the reconstruction access network equipment by data forwarding request lmessage, wherein, the data forwarding request lmessage includes the mark of the UE.

17th, method according to claim 16, it is characterised in that the data forwarding request lmessage also includes rebuilding cell ID. 18th, the method according to claim 16 or 17, it is characterised in that the data forwarding request lmessage also includes：The wireless access 7 of evolved universal terrestrial radio access network carries E-RAB information.

19th, method according to claim 12, it is characterised in that the source access network equipment changes the information that message sends the target access network equipment to the reconstruction access network equipment by data forwarding.

20th, the method according to any one of claim 12 to 19, it is characterised in that the data forwarding indicates to include：The mark of the UE.

21st, method according to claim 20, it is characterised in that the data forwarding indicates also to include：Rebuild cell ID.

22nd, the method according to claim 20 or 21, it is characterised in that the data forwarding indicates also to include：The RAB E-RAB information of evolved universal terrestrial radio access network.

23rd, a kind of data transmission method, it is characterised in that including：

When source access network equipment instruction user equipment UE is switched to target access network equipment, the target access network equipment receives the data for the UE that the source access network equipment Slow is deposited；

When the UE handoff failures and access reconstruction access network equipment, the target access network equipment receives the data forwarding request lmessage that the data forwarding for rebuilding access network equipment transmission indicated or received the source access network equipment transmission；

Indicated according to the data forwarding or the data forwarding request lmessage, received UE data are sent to the reconstruction access network equipment.

24th, method according to claim 23, it is characterised in that the data forwarding request lmessage includes the mark of the UE.

25th, method according to claim 24, the data forwarding request lmessage also includes rebuilding Cell ID.

26th, the method according to claim 24 or 25, the data forwarding request lmessage also includes：The RAB E-RAB information of evolved universal terrestrial radio access network.

27th, the method according to any one of claim 23 to 26, it is characterised in that the data forwarding indicates to include：The mark of the UE.

28th, method according to claim 27, it is characterised in that the data forwarding indicates also to include：Rebuild cell ID.

29th, the method according to claim 27 or 28, it is characterised in that the data forwarding indicates also to include：The RAB E-RAB information of evolved universal terrestrial radio access network.

30th, a kind of access network equipment, is used as the reconstruction access network equipment in user equipment (UE) handoff procedure, it is characterised in that the access network equipment includes：

Acquiring unit, for when source access network equipment indicates that the UE is switched to after target access network equipment, and the UE handoff failures, accesses the reconstruction access network equipment, obtaining the information of the source access network equipment or the target access network equipment；

Transmitting element, for the source access network equipment or the information of target access network equipment obtained according to the acquiring unit, sends the corresponding data forwardings of the UE to the source access network equipment or the target access network equipment and indicates；

Receiving unit, the data for receiving the UE that the source access network equipment or the target access network equipment indicate to send according to the data forwarding；Or, receive the data for the UE that the source access network equipment indicates to notify the target access network equipment to send according to the data forwarding.

31st, access network equipment according to claim 30, it is characterised in that the data of the UE are sent to after the target access network equipment by the source access network equipment, is stored in the source access network equipment, wherein, The acquiring unit specifically for：Obtain the information of the source access network equipment；The transmitting element specifically for：The information of the source access network equipment obtained according to the acquiring unit, sends the corresponding data forwardings of the UE to the source access network equipment and indicates；

The receiving unit specifically for：Receive the data for its U E preserved that the source access network equipment indicates to send according to the data forwarding.

32nd, access network equipment according to claim 30, it is characterised in that the data of the UE are sent to after the target access network equipment by the source access network equipment and deleted out of described source access network equipment, wherein,

The acquiring unit specifically for：Obtain the information of the source access network equipment；

The transmitting element specifically for：The information of the source access network equipment obtained according to the acquiring unit, sends the corresponding data forwardings of the UE to the source access network equipment and indicates；

The receiving unit specifically for：Receive the data for the UE that the source access network equipment indicates to notify the target access network equipment to send according to the data forwarding.

33rd, the access network equipment according to any one of claim 30 to 32, it is characterized in that, the receiving unit, is additionally operable to receive the wireless connection reconstruction message that the UE is sent, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment；

The acquiring unit, obtains the information of the source access network equipment in rebuilding message specifically for the wireless connection received from the receiving unit.

34th, access network equipment according to claim 30, it is characterised in that the data of the UE are sent to the target access network equipment by the source access network equipment, wherein,

The acquiring unit specifically for：Obtain the information of the target access network equipment；

The transmitting element specifically for：The information of the target access network equipment obtained according to the acquiring unit, sends the corresponding data forwardings of the UE to the target access network equipment and indicates； The receiving unit specifically for：Receive the data for the UE that the target access network equipment indicates to send according to the data forwarding.

35th, access network equipment according to claim 34, it is characterised in that

The receiving unit, is additionally operable to receive the radio link failure report that the UE is sent, wherein the radio link failure report includes the information of the target access network equipment；

The acquiring unit, the information specifically for obtaining the target access network equipment in the radio link failure report that is received from the receiving unit.

36th, access network equipment according to claim 34, it is characterised in that

The receiving unit, is additionally operable to receive the wireless connection reconstruction message that the UE is sent, wherein the wireless connection, which rebuilds message, includes the information of the source access network equipment；

The transmitting element, is additionally operable to the information of source access network equipment received according to the receiving unit, and sending data forwarding to the source access network equipment indicates；

The receiving unit, is additionally operable to receive the data forwarding conversion message that the source access network equipment indicates to send according to the data forwarding, the data forwarding conversion message includes the information of the target access network equipment；

The acquiring unit obtains the information of the target access network equipment in changing message specifically for the data forwarding received from the receiving unit.

37th, the access network equipment according to any one of claim 30-36, it is characterised in that the data forwarding is designated as Radio Link Failure instruction.

38th, the access network equipment according to any one of claim 30-36, it is characterised in that the data forwarding indicates to include：The mark of the UE.

39th, the access network equipment according to claim 38, it is characterised in that the data forwarding indicates also to include：Rebuild cell ID. 40th, the access network equipment according to claim 38 or 39, it is characterised in that the data forwarding indicates also to include：The RAB E-R AB information of evolved universal terrestrial radio access network.

41st, a kind of access network equipment, is used as the source access network equipment in user equipment (UE) handoff procedure, it is characterised in that the access network equipment includes：

Transmitting element, for sending switching command to the UE, the switching command includes the information of Target cell；

The transmitting element, is additionally operable to being sent to the Slow UE deposited data into the target access network equipment where the Target cell；

Receiving unit, for when the UE handoff failures after, when access network equipment is rebuild in access, receives and described rebuild the data forwarding that access network equipment sends and indicate；

The transmitting element, is additionally operable to when the source access network equipment preserves the data for the UE for being sent to the target access network equipment, is indicated according to the data forwarding, and the data of the UE are sent to the reconstruction access network equipment；Or, it is additionally operable to when the source access network equipment does not preserve the data for the UE for being sent to the target access network equipment, indicated according to the data forwarding, notify the target access network equipment to send the data of the UE to the reconstruction access network equipment；Or, it is additionally operable to be indicated according to the data forwarding, the information of the target access network equipment is sent to the reconstruction access network equipment, so that the reconstruction access network equipment obtains the data of the UE according to the information of the target access network equipment from the target access network equipment.

42nd, access network equipment according to claim 41, it is characterised in that also include：After memory cell, the target access network equipment where for being sent to the Target cell in the data for the UE that the transmitting element deposits Slow, the data for the UE for being sent to the target access network equipment are preserved. 43rd, access network equipment according to claim 42, it is characterised in that also include：Unit is deleted, when reaching preset time for preserving the data of the UE when the memory cell, preserved UE data are deleted.

44th, access network equipment according to claim 42, it is characterised in that also include：When deleting unit, context release message for receiving the UE when the receiving unit, preserved UE data are deleted.

45th, access network equipment according to claim 41, it is characterized in that, the transmitting element notifies the target access network equipment to send the data of the UE to the reconstruction access network equipment by data forwarding request lmessage, wherein, the data forwarding request lmessage includes the mark of the UE.

46th, access network equipment according to claim 45, it is characterised in that the data forwarding request lmessage also includes rebuilding cell ID.

47th, the access network equipment according to claim 45 or 46, it is characterised in that the data forwarding request lmessage also includes：The RAB E-RAB information of evolved universal terrestrial radio access network.

48th, access network equipment according to claim 41, it is characterised in that the transmitting element changes the information that message sends the target access network equipment to the reconstruction access network equipment by data forwarding.

49th, the access network equipment according to claim any one of 41-47, it is characterised in that the data forwarding indicates to include：The mark of the UE.

50th, access network equipment according to claim 49, it is characterised in that the data forwarding indicates also to include：Rebuild cell ID.

51st, the access network equipment according to claim 49 or 50, it is characterised in that the data forwarding indicates also to include：The RAB E-R AB letters of evolved universal terrestrial radio access network Breath.

52nd, a kind of access network equipment, is used as the target access network equipment in user equipment (UE) handoff procedure, it is characterised in that the access network equipment includes：

Receiving unit, for when source access network equipment indicates that the UE is switched to target access network equipment, receiving the data for the UE that the source access network equipment Slow is deposited；

The receiving unit, is additionally operable to, when the UE handoff failures and access reconstruction access network equipment, receive the data forwarding request lmessage that the data forwarding for rebuilding access network equipment transmission indicated or received the source access network equipment transmission；

Transmitting element, the data forwarding for being received according to the receiving unit is indicated or the data forwarding request lmessage, and received UE data are sent to the reconstruction access network equipment.

53rd, access network equipment according to claim 52, it is characterised in that the data forwarding request lmessage includes the mark of the UE.

54th, access network equipment according to claim 53, the data forwarding request lmessage also includes rebuilding cell ID.

55th, the access network equipment according to claim 53 or 54, the data forwarding request lmessage also includes：The wireless access 7 of evolved universal terrestrial radio access network carries E-RAB information.

56th, the access network equipment according to claim any one of 52-55, it is characterised in that the data forwarding indicates to include：The mark of the UE.

57th, access network equipment according to claim 56, it is characterised in that the data forwarding indicates also to include：Rebuild cell ID.

58th, the access network equipment according to claim 56 or 57, it is characterised in that the data forwarding indicates also to include：The RAB E-R AB information of evolved universal terrestrial radio access network.