CN104684104A

CN104684104A - Dual-connection method, dual-connection switching method and corresponding systems and equipment

Info

Publication number: CN104684104A
Application number: CN201310632323.8A
Authority: CN
Inventors: 江小威; 陈卓; 杨宁
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2013-11-29
Filing date: 2013-11-29
Publication date: 2015-06-03
Anticipated expiration: 2033-11-29
Also published as: CN104684104B

Abstract

The invention discloses a dual-connection method, a dual-connection switching method, and systems and equipment. A macro base station is used for sending connection reconfiguration information to a terminal after determining a dual-connection mode and establishing E-RAB with a micro base station, and the terminal is used for determining the actually used dual-connection mode according to the content of the micro base station configuration information contained in the received connection reconfiguration information, so that the problem that the terminal is incapable of knowing the dual-connection mode in current 3GPP (the 3rd Generation Partnership Project) standard is overcome.

Description

A kind of dual link method, dual link changing method and corresponding system and equipment

Technical field

The present invention relates to wireless communication field, particularly relate to a kind of dual link method, system and equipment, and dual link changing method, system and equipment.

Background technology

Base station is as the visual plant in wireless communication technology widespread deployment, industry is according to the coverage of base station and transmitting power, base station is divided into macro base station and micro-base station, wherein, the region that macro base station covers is called macrocell (macro-cell), the region that micro-base station covers is called Microcell, and Microcell here can be micro cell, pico cell or femto cell.

In order to ensure the continuity of the network coverage, 3GPP(3 ^rdgeneration Partnership Project, third generation affiliate) propose the framework increasing several micro-base stations in macro base station coverage in standard, utilize the seamless continuous covering of macro base station feasible region, adopt micro-base station to carry out overlap at hot zones (as densely populated part) to cover, preferably network service is provided for the business demand amount that hot zones is larger by micro-base station, improve network coverage quality with this, increase throughput of system.

In 3GPP R12 standard, propose terminal and be connected to scheme on macro base station and micro-base station simultaneously, terminal can communicate with micro-base station with macro base station simultaneously, realize the dual link of terminal and macro base station and micro-base station, as shown in Figure 1, to improve the load balancing between base station, and the throughput of terminal can be improved to a certain extent.At present, 3GPP defines two kinds of dual link schemes:

Scheme one:

In descending process, after data are directly sent to micro-base station by the gateway (S-GW) in core net, then send to terminal by micro-base station; In up process, after data are reported micro-base station by terminal, directly report S-GW by micro-base station again, scheme one can be referred to as the aggregation of resources scheme that non-bearing is separated (non-bearer-splitting), that is: micro-base station sends to the data of terminal directly to be issued by S-GW.

Scheme two:

In descending process, data are first sent to macro base station by S-GW, after giving micro-base station, then are handed down to terminal by micro-base station by macro base station by data retransmission; In up process, data are reported micro-base station by terminal, by micro-base station by data retransmission to after macro base station, S-SW is sent to again by macro base station, scheme two can be referred to as to carry the aggregation of resources scheme being separated (bearer-splitting), that is: micro-base station sends to the data of terminal to be forwarded by macro base station.

At present, define only this two kinds of dual link schemes in 3GPP, but, terminal cannot know the actual dual link mode used at that time, therefore, used dual link mode be bearer-splitting mode is also non-bearer-splitting mode to make terminal know to need to find suitable scheme.

Summary of the invention

Embodiments provide a kind of dual link method, dual link changing method, system and equipment, the problem of dual link mode cannot be known in order to terminal in current 3GPP scheme.

The embodiment of the present invention describes a kind of dual link method, and described method comprises:

The dual link mode of macro base station determination terminal is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation;

After setting up RAB E-RAB between micro-base station that macro base station and terminal access, send the connection reallocation message comprising described micro-base station configuration information to described terminal, indicate described terminal according to described connection reallocation message determination dual link mode;

Wherein: have in described micro-base station configuration information that described connection reallocation message comprises the PDCP PDCP layer configuration information of micro-base station, based on evolution grouping system carrying eps-bearer mark and Data Radio Bearer DRB identify at least one information time, dual link mode be non-bearing be separated aggregation of resources; Otherwise dual link mode is the aggregation of resources that carrying is separated.

By the scheme of the embodiment of the present invention, making terminal determine this dual link mode used according to micro-base station configuration information that the connection reallocation message received comprises, is the optimization to current 3GPP standard.

Preferably, described connection reallocation message is sent by radio resource control RRC signaling.

By the scheme of the embodiment of the present invention, give the mode that a kind of available transmission connects reallocation message.

Set up E-RAB between macro base station and described micro-base station, specifically comprise:

Macro base station is initiated E-RAB and is set up request to micro-base station, described E-RAB set up in request comprise described micro-base station is known dual link mode is the indication information of the aggregation of resources that the aggregation of resources that is separated of carrying or non-bearing are separated;

Macro base station receive that described micro-base station returns set up response message time, complete the E-RAB process of establishing between described micro-base station.

By the scheme of the embodiment of the present invention, macro base station, when setting up E-RAB with micro-base station, makes micro-base station know the actual dual link mode used.

Preferably, described Indication message is: the resource allocation information of the described macro base station configured in operation management maintain OAM, makes micro-base station be the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation according to the dual link mode of the resource allocation information determination terminal of described macro base station; Or

Described Indication message is: uplink tunnel destination node, make micro-base station when determining that described uplink tunnel destination node is macro base station, determine that the dual link mode of terminal is the aggregation of resources that carrying is separated, when determining that described uplink tunnel destination node is gateway S-GW, determine that the dual link mode of terminal is the aggregation of resources that non-bearing is separated; Or

Described Indication message is: represent that the dual link mode of terminal is the aggregation of resources that non-bearing is separated or the identification number carrying the aggregation of resources be separated, make micro-base station according to the dual link mode of described identification number determination terminal.

By the scheme of the embodiment of the present invention, describe three kinds of optional manner that dual link mode is known in micro-base station.

Preferably, macro base station is initiated after E-RAB sets up request to micro-base station, and receive described set up response message before, described method also comprises:

When described micro-base station is the aggregation of resources of non-bearing separation according to described Indication message determination dual link mode, at least one information in this locality configuration PDCP layer, eps-bearer mark and DRB mark, when determining that dual link mode is the aggregation of resources of carrying separation, without the need to identifying at this locality configuration PDCP layer, eps-bearer mark and DRB.

By the scheme of the embodiment of the present invention, micro-base station, when determining that dual link mode is the aggregation of resources of carrying separation, determines that data are forwarded by macro base station, therefore, without the need in this locality configuration PDCP layer, eps-bearer mark and DRB mark, simplify local layoutprocedure.

Preferably, before macro base station initiates E-RAB foundation request to micro-base station, or macro base station initiates E-RAB simultaneously to micro-base station, and described method also comprises:

Macro base station adds the Serving cell serving cell for setting up described E-RAB to described micro-base station requests, or, the serving cell for setting up described E-RAB that macro base station has added to described micro-base station requests.

By the scheme of the embodiment of the present invention, macro base station can ask micro-base station assigns serving cell before setting up E-RAB or simultaneously, described serving cell can newly add micro-base station, also can add micro-base station, to guarantee there is local resource for setting up E-RAB.

Preferably, when dual link mode is the aggregation of resources of carrying separation, the uplink tunnel destination node of the E-RAB set up between described macro base station and described micro-base station is described macro base station, otherwise the uplink tunnel destination node of the E-RAB set up between macro base station and described micro-base station is gateway S-GW.

By the scheme of the embodiment of the present invention, by configuring different uplink tunnel destination nodes, realize different dual link modes.

Described method also comprises:

Preferably, set up E-RAB between described macro base station and mobile management entity MME, wherein, when dual link mode is the aggregation of resources of carrying separation, the downlink tunnel destination node of the E-RAB set up between macro base station and MME is described macro base station; Otherwise the downlink tunnel destination node of the E-RAB set up between macro base station and MME is micro-base station.

By the scheme of the embodiment of the present invention, by configuring different downlink tunnel destination nodes, realize different dual link modes.

Preferably, macro base station with set up E-RAB respectively between described micro-base station and MME and send to described terminal by being connected reallocation message, specifically comprise:

Before the dual link mode of macro base station determination terminal, receive the E-RAB foundation request that described MME initiates;

E-RAB is set up between macro base station and described micro-base station;

The connection reallocation message comprising own configuration information and described micro-base station configuration information, after completing the E-RAB process of establishing between micro-base station, is sent to described terminal by macro base station;

Macro base station, after described terminal determination dual link mode, returns to carry to MME and sets up response message, complete the E-RAB process of establishing between MME.

By the scheme of the embodiment of the present invention, describing a kind of macro base station and set up E-RAB specific implementation process with micro-base station and MME respectively, is a kind of feasible program of dual link scheme.

Preferably, macro base station respectively with set up E-RAB between described micro-base station and MME and send to described terminal by being connected reallocation message, specifically comprise:

Macro base station, before determining the dual link mode of terminal, receives the E-RAB foundation request that described MME initiates;

When determining that dual link mode is the aggregation of resources of carrying separation, the connection reallocation message comprising own configuration information is sent to described terminal, described terminal is indicated to carry out local connection reconfiguration operation, and after described terminal completes local connection reconfiguration operation, return to MME and set up response message;

Macro base station after completing the E-RAB process of establishing between MME, then and described micro-base station between set up E-RAB;

The connection reallocation message comprising described micro-base station configuration information, after completing the E-RAB process of establishing between micro-base station, is sent to described terminal by macro base station, indicates described terminal according to described micro-base station configuration information determination dual link mode.

By the scheme of the embodiment of the present invention, describing another kind of macro base station and set up E-RAB specific implementation process with micro-base station and MME respectively, is the another kind of feasible program of dual link scheme.

The embodiment of the present invention also describes a kind of dual link changing method, and described method comprises:

When the dual link mode of macro base station determination terminal needs to switch, and set up E-RAB between micro-base station of accessing of terminal;

Described macro base station sends the connection reallocation message comprising described micro-base station configuration information to described terminal, indicate described terminal to determine the dual link mode after switching according to described connection reallocation message;

Wherein: described dual link mode is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation, when having at least one information in the PDCP layer configuration information of micro-base station, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, the dual link mode after switching is the aggregation of resources that non-bearing is separated; Otherwise the dual link mode after switching is the aggregation of resources that carrying is separated.

By the scheme of the embodiment of the present invention, making terminal in dual link switches, determine to switch the dual link mode of front and back, is the optimization to current 3GPP standard.

Preferably, described method also comprises:

Described macro base station initiates path handover request to MME, wherein, when the aggregation of resources that dual link mode switches to non-bearing to be separated by the aggregation of resources carrying separation, the downlink tunnel destination node comprised in the handover request of described path is micro-base station, indicate described MME that downlink tunnel destination node is switched to described micro-base station from macro base station, otherwise the downlink tunnel destination node comprised in the handover request of described path is macro base station, indicate described MME that downlink tunnel destination node is switched to macro base station from micro-base station.

By the scheme of the embodiment of the present invention, macro base station, by the difference of downlink tunnel destination node comprised in the handover request of path, triggers the switching that MME realizes dual link.

The real-time example of the present invention describes a kind of dual link system, and described system comprises macro base station, sets up micro-base station of E-RAB with described macro base station, wherein:

Described macro base station, for determining that the dual link mode of terminal is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation, and, and after setting up E-RAB between described micro-base station, send the connection reallocation message comprising described micro-base station configuration information to described terminal, indicate described terminal according to described connection reallocation message determination dual link mode;

Described micro-base station, for setting up E-RAB with described macro base station;

Wherein: when having at least one information in the PDCP layer configuration information of micro-base station, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, dual link mode is the aggregation of resources that non-bearing is separated; Otherwise dual link mode is the aggregation of resources that carrying is separated.

Preferably, described macro base station, request is set up specifically for initiating E-RAB to micro-base station, described E-RAB set up in request comprise described micro-base station is known this dual link mode is the indication information of the aggregation of resources that the aggregation of resources that is separated of carrying or non-bearing are separated, and receive that described micro-base station returns set up response message, complete the E-RAB process of establishing between described micro-base station;

Described micro-base station, after the E-RAB initiated setting up request, carrying out this locality and configuring, and returning to described macro base station and set up response message specifically for receiving described macro base station.

Preferably, described micro-base station, specifically for being: during the resource allocation information of the described macro base station configured in OAM, be the aggregation of resources that the aggregation of resources that is separated of carrying or non-bearing are separated according to the dual link mode of the resource allocation information determination terminal of described macro base station at described Indication message; Or, at described Indication message be: during uplink tunnel destination node, if determine, described uplink tunnel destination node is macro base station, then determine that the dual link mode of terminal is the aggregation of resources that carrying is separated, if determine, described uplink tunnel destination node is S-GW, then determine that the dual link mode of terminal is the aggregation of resources that non-bearing is separated; Or, at described Indication message be: when representing that the dual link mode of terminal is the identification number of the aggregation of resources of non-bearing separation or the aggregation of resources of carrying separation, according to the dual link mode of described identification number determination terminal.

Preferably, described micro-base station, specifically for when according to described Indication message determination dual link mode being the aggregation of resources of non-bearing separation, in this locality configuration PDCP layer, eps-bearer mark and DRB mark, when determining that dual link mode is the aggregation of resources of carrying separation, without the need to identifying at this locality configuration PDCP layer, eps-bearer mark and DRB.

Preferably, described macro base station, also for before initiate E-RAB foundation request to micro-base station, or initiate E-RAB simultaneously to micro-base station, the serving cell for setting up described E-RAB is added to described micro-base station requests, or, to the serving cell for setting up described E-RAB that described micro-base station requests has been added.

Preferably, described system also comprises:

MME, for setting up E-RAB between described macro base station, wherein, when dual link mode is the aggregation of resources of carrying separation, the downlink tunnel destination node of the E-RAB set up between macro base station and MME is described macro base station; Otherwise the downlink tunnel destination node of the E-RAB set up between macro base station and MME is micro-base station.

Preferably, described MME, sets up request specifically for initiating E-RAB to described macro base station, and receive that described macro base station returns set up response message time, complete the E-RAB process of establishing between macro base station;

Described macro base station, the E-RAB initiated specifically for receiving described MME sets up request, and after determining the dual link mode of terminal, and set up E-RAB between described micro-base station, after completing the E-RAB process of establishing between micro-base station, the connection reallocation message comprising own configuration information and described micro-base station configuration information is sent to described terminal, indicates described terminal determination dual link mode, backward MME return and set up response message.

Preferably, described MME, sets up request specifically for initiating E-RAB to described macro base station, and receive that macro base station returns set up response message time, complete the E-RAB process of establishing between macro base station;

Described macro base station, the E-RAB initiated specifically for receiving described MME sets up request, and when determining that dual link mode is the aggregation of resources of carrying separation, the connection reallocation message comprising own configuration information is sent to described terminal, after indicating described terminal to carry out local connection reconfiguration operation, return to MME and set up response message, and, after completing the E-RAB process of establishing between MME, set up E-RAB again and between described micro-base station, and the connection reallocation message comprising described micro-base station configuration information is sent to described terminal, indicate described terminal according to described micro-base station configuration information determination dual link mode.

The embodiment of the present invention also describes a kind of dual link switched system, and described system comprises macro base station, sets up micro-base station of E-RAB with described macro base station, wherein:

Macro base station, during for determining that the dual link mode of terminal needs to switch, and set up E-RAB between micro-base station that terminal accesses, and the connection reallocation message comprising described micro-base station configuration information is sent to described terminal, indicate described terminal to determine the dual link mode after switching according to described connection reallocation message; Wherein: described dual link mode is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation, when having at least one information in the PDCP layer configuration information of micro-base station, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, the dual link mode after switching is the aggregation of resources that non-bearing is separated; Otherwise the dual link mode after switching is the aggregation of resources that carrying is separated;

Described micro-base station, for setting up E-RAB with described macro base station.

Preferably, described system also comprises MME, wherein:

Described macro base station, specifically for initiating path handover request to described MME, wherein, when the aggregation of resources that dual link mode switches to non-bearing to be separated by the aggregation of resources carrying separation, the downlink tunnel destination node comprised in the handover request of described path is micro-base station, otherwise the downlink tunnel destination node comprised in the handover request of described path is macro base station;

Described MME, when downlink tunnel destination node for comprising in the described path handover request received is micro-base station, downlink tunnel destination node is switched to described micro-base station from macro base station, when the downlink tunnel destination node comprised in the described path handover request received is macro base station, downlink tunnel destination node is switched to macro base station from micro-base station.

The embodiment of the present invention describes a kind of macro base station, and described macro base station comprises:

Dual link mode determination module, for determining that the dual link mode of terminal is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation;

Module is set up in tunnel, sets up E-RAB between the micro-base station for terminal access;

Indicating module, for sending the connection reallocation message comprising described micro-base station configuration information to described terminal, indicates described terminal according to described connection reallocation message determination dual link mode;

Wherein: when having at least one information in PDCP layer configuration information, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, dual link mode is the aggregation of resources that non-bearing is separated; Otherwise dual link mode is the aggregation of resources that carrying is separated.

Preferably, described indicating module, specifically for sending described connection reallocation message by RRC signaling.

Preferably, module is set up in described tunnel, request is set up specifically for initiating E-RAB to micro-base station, described E-RAB set up in request comprise described micro-base station is known this dual link mode is the indication information of the aggregation of resources that the aggregation of resources that is separated of carrying or non-bearing are separated, and receive that described micro-base station returns set up response message time, complete the E-RAB process of establishing between described micro-base station.

Preferably, module is set up in described tunnel, specifically for initiate E-RAB foundation request to micro-base station before, or initiate E-RAB simultaneously to micro-base station, the Serving cell serving cell for setting up described E-RAB is added to described micro-base station requests, or, to the serving cell for setting up described E-RAB that described micro-base station requests has been added.

Preferably, module is set up in described tunnel, and also for setting up E-RAB between MME, wherein, when dual link mode is the aggregation of resources of carrying separation, and the downlink tunnel destination node of the E-RAB set up between MME is described macro base station; Otherwise, and the downlink tunnel destination node of the E-RAB set up between MME is micro-base station.

Preferably, module is set up in described tunnel, the E-RAB initiated specifically for receiving described MME sets up request, and after determining the dual link mode of terminal, and set up E-RAB between described micro-base station, after completing the E-RAB process of establishing between micro-base station, the connection reallocation message comprising own configuration information and described micro-base station configuration information is sent to described terminal, indicate described terminal determination dual link mode, backward MME return and set up response message.

Preferably, module is set up in described tunnel, the E-RAB initiated specifically for receiving described MME sets up request, and when determining that dual link mode is the aggregation of resources of carrying separation, the connection reallocation message comprising own configuration information is sent to described terminal, after indicating described terminal to carry out local connection reconfiguration operation, return to MME and set up response message, and, after completing the E-RAB process of establishing between MME, set up E-RAB again and between described micro-base station, and the connection reallocation message comprising described micro-base station configuration information is sent to described terminal, indicate described terminal according to described micro-base station configuration information determination dual link mode.

The embodiment of the present invention also describes a kind of terminal, and described terminal comprises:

Receiver module, for the connection reconfiguration message of receiving package containing micro-base station configuration information;

Dual link mode determination module, for according to described connection reallocation message determination dual link mode, wherein: when having at least one information in the PDCP layer configuration information of micro-base station, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, determine that dual link mode is the aggregation of resources that non-bearing is separated; Otherwise, determine that dual link mode is the aggregation of resources that carrying is separated.

The embodiment of the present invention also describes a kind of macro base station, and described macro base station comprises:

Switching judging module, for judging that the dual link mode of terminal is the need of switching;

Module is set up in tunnel, for when determining that the dual link mode of terminal needs to switch, and set up E-RAB between micro-base station that terminal accesses, wherein, when the aggregation of resources that dual link mode switches to non-bearing to be separated by the aggregation of resources carrying separation, the uplink tunnel destination node of the E-RAB set up between macro base station and described micro-base station is S-GW, otherwise uplink tunnel destination node is macro base station;

Indicating module, for sending the connection reallocation message comprising described micro-base station configuration information to described terminal, described terminal is indicated to determine the dual link mode after switching according to described connection reallocation message, wherein: described dual link mode is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation, when having at least one information in the PDCP layer configuration information of micro-base station, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, the dual link mode after switching is the aggregation of resources that non-bearing is separated; Otherwise the dual link mode after switching is the aggregation of resources that carrying is separated.

Preferably, described macro base station also comprises:

Path handover request module, for initiating path handover request to MME, wherein, when the aggregation of resources that dual link mode switches to non-bearing to be separated by the aggregation of resources carrying separation, the downlink tunnel destination node comprised in the handover request of described path is micro-base station, indicate described MME that downlink tunnel destination node is switched to described micro-base station from macro base station, otherwise, the downlink tunnel destination node comprised in the handover request of described path is macro base station, indicates described MME that downlink tunnel destination node is switched to macro base station from micro-base station.

Dual link mode determination module, for according to described connection reallocation message determination dual link mode, wherein: described dual link mode is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation, when having at least one information in the PDCP layer configuration information of micro-base station, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, determine the aggregation of resources that dual link mode switches to non-bearing to be separated by the aggregation of resources carrying separation; Otherwise, determine the aggregation of resources that the aggregation of resources that dual link mode is separated by non-bearing switches to carrying to be separated.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the dual link schematic diagram of terminal and macro base station and micro-base station in background technology;

Fig. 2 is dual link method step schematic diagram in the embodiment of the present invention one;

Fig. 3 ~ Fig. 6 is dual link schematic flow sheet in the embodiment of the present invention one;

Fig. 7 is dual link changing method step schematic diagram in the embodiment of the present invention two;

Fig. 8, Fig. 9 are the schematic flow sheet that in the embodiment of the present invention two, dual link is set up;

Figure 10 is the structural representation of dual link system in the embodiment of the present invention three;

Figure 11 is the structural representation of macro base station in the embodiment of the present invention five;

Figure 12 is the structural representation of terminal in the embodiment of the present invention five;

Figure 13 is the structural representation of macro base station in the embodiment of the present invention six.

Embodiment

In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.

The embodiment of the present invention proposes a kind of dual link and dual link handover scheme, dual link mode is the situation of the aggregation of resources (follow-up abbreviation bearer-splitting mode) of carrying separation or the aggregation of resources (the non-bearer-splitting mode of follow-up abbreviation) of non-bearing separation to come not make in perfect current 3GPP standard terminal to know, in the connection reallocation message sent to terminal, carry relevant information by macro base station, make terminal know used dual link mode.

Described relevant information refers to PDCP (the Packet Data Convergence Protocol in micro-base station configuration information, PDCP) layer configuration information, carry (Evolved Packet System-bearer based on the grouping system of evolution, eps-bearer) mark and Data Radio Bearer (Data Radio Bearer, DRB) identify, if when comprising at least one information in above-mentioned three kinds of information in micro-base station configuration information, represent that this dual link mode is non-bearer-splitting mode; If do not comprise any one information above-mentioned in micro-base station configuration information, represent that this dual link mode is bearer-splitting mode.

It should be noted that, the micro-base station involved by the embodiment of the present invention includes but not limited to the small base stations such as Pico base station, Home eNodeB, and micro-base station of the dual link process of participation terminal is micro-base station of the actual access of terminal, the follow-up SeNB that is referred to as; Macro base station involved by the embodiment of the present invention is the macro base station of the actual access of terminal, is follow-uply referred to as MeNB.

Be described in detail below in conjunction with the scheme of Figure of description to the embodiment of the present invention.

Embodiment one:

The embodiment of the present invention one describes a kind of dual link method, and as shown in Figure 2, described dual link method comprises the following steps:

Step 101:MeNB determines that the dual link mode of terminal be bearer-splitting mode is also non-bearer-splitting mode.

In this step, MeNB by the triggering of the upper layer network element equipment (as MME) in core net, can start dual link process of establishing, also initiatively can initiate the process of establishing of dual link, can also be even the process of establishing of the triggering initiation dual link by SeNB.

E-RAB is set up between step 102:MeNB and SeNB.

The connection reallocation message comprising described SeNB configuration information is sent to described terminal by step 103:MeNB.

Step 104: described terminal is according to the content determination dual link mode in described connection reallocation message, be specially: when terminal recognition goes out at least one information in PDCP layer configuration information, eps-bearer mark and the DRB mark having micro-base station in described micro-base station configuration information that described connection reallocation message comprises, determine that dual link mode is non-bearer-splitting mode; Otherwise, determine that dual link mode is bearer-splitting mode.

By the method for the embodiment of the present invention one, make terminal know that this dual link mode be bearer-splitting mode is also non-bearer-splitting mode according to the connection reallocation message that MeNB sends, in perfect current 3GPP standard for dual link scheme.

Below the scheme of above-mentioned steps 101 and step 104 is described in detail.

In above-mentioned steps 101, first MeNB will determine that used dual link mode be bearer-splitting mode is also non-bearer-splitting mode.Particularly, MeNB can select dual link mode according to the resource configuration state of the load balancing state between local and micro-base station and/or this locality, such as: if the local load of MeNB less (as being less than setting threshold value), then can select bearer-splitting mode; Otherwise, select non-bearer-splitting mode; Again such as, according to the resource configuration state of MeNB this locality, determine local available bearer network, if be subject to the restriction of bearer network not have the ability of forwarding data, MeNB need select non-bearer-splitting mode; Otherwise MeNB can select bearer-splitting mode.

Described macro base station, after step 101 determines dual link mode, just can set up E-RAB in step 102 and described micro-base station.Particularly, MeNB, also needs to set up E-RAB between MME except setting up except E-RAB with micro-base station when dual link.

The embodiment of the present invention does not limit MeNB sets up E-RAB respectively sequencing with SeNB and MME, and MeNB after first and MME sets up E-RAB, then can set up E-RAB with SeNB; Also after first and SeNB sets up E-RAB, then E-RAB can be set up with MME; Can also set up in the process of E-RAB with MME, set up the E-RAB with SeNB.

Equally, MeNB just can include the described of SeNB configuration information to terminal transmission set up E-RAB between SeNB after and be connected reallocation message, example 1, MeNB after setting up E-RAB with SeNB and before having set up E-RAB with MME, can send the described connection reallocation message including described SeNB configuration information and MeNB configuration information to terminal; Example 2, MeNB can set up in E-RAB process with MME, the configuration information including MeNB is sent to terminal, now, terminal also cannot determine dual link mode, afterwards, MeNB is after completing the E-RAB process of establishing between SeNB, send the connection reallocation message including SeNB configuration information again to terminal, now, terminal can determine dual link mode.

MeNB sets up E-RAB with SeNB and MME and send the specific descriptions of the two kinds of examples being connected reallocation message to terminal as follows respectively above:

Example 1:

As shown in Figure 3, for MeNB is by the triggering of MME, set up the schematic flow sheet of dual link, in this example 1, MeNB after completing the E-RAB process of establishing with SeNB, with the E-RAB process of establishing of MME, to send to described terminal and comprise the connection reallocation message of SeNB configuration information, indicating terminal, when carrying out local connection reconfiguration operation, is determined dual link mode, is specifically comprised the following steps:

Step 201:MME initiates E-RAB to MeNB and sets up request.

The message content that described E-RAB sets up request can comprise: MME and MeNB based on the AP of S1 agreement identify (the S1AP ID of MME/MeNB), terminal maximum polymerization bit rate, for setting up the list of E-RAB, described list comprises mark (E-RAB ID) for setting up E-RAB, for setting up service quality (Quality of Service, QoS) parameter, the uplink tunnel destination node of E-RAB.Here uplink tunnel can based on GPRS Tunnel Protocol (GTP), therefore, described uplink tunnel destination node can be up GTP tunnel destination node, described up GTP tunnel destination node is S-GW, usually, can set described up GTP tunnel destination node is S1 interface on S-GW, particularly, the content of described up GTP tunnel destination node can comprise: based on tunnel destination node identify label (GTP-TEID), transport layer address (as the IP address) of GTP, characterize as the S1 interface on the S-GW of described up GTP tunnel destination node using this.

After step 202:MeNB receives the E-RAB foundation request of MME transmission, and set up E-RAB between described SeNB.

In this step 202, the process setting up E-RAB between MeNB and SeNB is:

The first step: MeNB determines dual link mode.

Second step: MeNB initiates to SeNB request and the E-RAB foundation request of adding Serving cell (serving cell).

The object that MeNB initiates to add serving cell to SeNB is: in the resource of the new serving cell added, set up described E-RAB.Certainly, if the serving cell added in SeNB can be used for setting up described E-RAB, then MeNB can ask the serving cell added to set up described E-RAB directly to SeNB.

Described E-RAB sets up in request and comprises uplink tunnel destination node, if MeNB intends to adopt bearer-splitting mode, if this uplink tunnel destination node is MeNB(described uplink tunnel destination node is a certain interface of MeNB, then E-RAB sets up GTP-TEID and the IP address that the information of carrying in request is this MeNB interface).If MeNB intends to adopt non-bearer-splitting mode, this uplink tunnel destination node is the S1 interface of S-GW.

Described E-RAB sets up in request and also comprises indication information, can know that this dual link mode be bearer-splitting mode is also non-bearer-splitting mode for making the SeNB receiving described indication information.The embodiment of the present invention one includes but not limited to adopt following three kinds of modes to make SeNB determine this dual link mode according to the indication information received.

Mode one: SeNB is by the mode determination dual link mode of operation management maintain (Operation Administration and Maintenance, OAM) static configuration.

Resource allocation information that can be mutually local alternately between MeNB and SeNB, the other side is made to understand local status of resource allocation, thus avoid MeNB and SeNB when setting up dual link in different ways, specific practice is: MeNB is the resource allocation information of the described MeNB configured in OAM to the indication information that SeNB sends, and makes SeNB according to the dual link mode of the resource allocation information determination terminal of described MeNB.Such as, if being configured with by operator in the resource allocation information of MeNB is the bearer network information that MeNB configures, and operator is configured with the dual link mode that this bearer network can only adopt, then MeNB can only select the dual link mode with the bearer network adaptation of self, SeNB, according to the bearer network information of MeNB, determines the dual link mode that MeNB selects.

Mode two: SeNB is set up in request according to E-RAB and is comprised uplink tunnel destination node determination dual link mode.Described Indication message is the information of uplink tunnel destination node, if uplink tunnel destination node is MeNB, then SeNB determines that dual link mode is bearer-splitting mode; If uplink tunnel end point is S-GW, then SeNB determines that dual link mode is non-bearer-splitting mode.

Mode three: SeNB is according to explicit identification determination dual link mode.Described Indication message is identification number, for representing that the dual link mode of terminal be bearer-splitting mode is also non-bearer-splitting mode.

Described E-RAB sets up in request except including uplink tunnel destination node and indication information, can also comprise following information: the maximum polymerization bit rate of terminal, for setting up the list (comprising E-RABID, E-RAB qos parameter) of E-RAB, these information can adopt MME to send to the E-RAB of MeNB to set up optimum configurations in request.In addition, described E-RAB sets up the information that can also comprise in request has:

1), cause value: MeNB adds serving cell(to SeNB request or uses existing serving cell) reason, as: load balancing, wireless reason, QoS of survice reason, promote throughput etc.

2), Serving cell mark: for adding or use the mark of existing serving cell.

3), RRC context: comprise the wireless capability message of terminal, access layer configuration information (comprising the PCI of C-RNTI, MeNB community of terminal, access layer configuration suggestion (the Radio Resource specialized configuration of MAC layer configuration, the configuration of physics special layer, carrier aggregation, SRD/DRB configuration)), Access Layer contextual information, RRM information.

4), security capability information, Access Layer security information, user subscription information, permission are based on the MDT managed.

5), the historical information of terminal.

3rd step: after SeNB receives the E-RAB foundation request of MeNB transmission, after corresponding configuration is carried out in this locality, return set up response message to described MeNB, now, the E-RAB process of establishing between MeNB and SeNB completes.

The local layoutprocedure of SeNB comprises: the access layer configuration suggestion according to MeNB configures accordingly to the Access Layer of the serving cell of this locality, certainly, also can not advise with reference to the access layer configuration of MeNB, but adopts local configuration.In addition, SeNB can also determine the access layer configuration parameter (comprising: physical layer parameter, MAC layer parameter, DRB configuration parameter (rlc layer configuration, logic channel configuration, the configuration of PDCP layer etc.)) of terminal.Configure for described DRB, if when SeNB determines that this dual link mode is bearer-splitting mode, then do not comprise in described DRB configuration: the configuration IE(PDCP-config of PDCP layer, content comprise the time of abandoning, PDCP SN size, header compression algorithm, the need of status report etc.), also can not comprise: eps-bearer mark, DRB mark; If when SeNB determines that this dual link mode is non-bearer-splitting mode, then described DRB configuration comprises: at least one information in the configuration of PDCP layer, eps-bearer mark and DRB mark.

What described SeNB returned to described MeNB sets up response message for representing that this E-RAB's sets up situation, content comprises: the E-RAB list (comprising E-RAB ID, E-RAB qos parameter, tunnel destination node) of foundation, if set up E-RAB failure, also comprise and set up failed E-RAB list (comprising E-RAB ID and failure cause).

In flow process shown in Fig. 3, MeNB initiates to SeNB request and the E-RAB foundation request of adding serving cell simultaneously, this flow process can be deformed into: MeNB first adds serving cell to SeNB request, and now, the content of carrying in request message does not comprise E-RAB list.SeNB returns to MeNB and adds operating result (comprising the access layer configuration information of terminal).Afterwards, MeNB initiates E-RAB to SeNB again and sets up request, to set up the E-RAB between MeNB and SeNB, and specifically can see Fig. 4.Again further, MeNB to SeNB request add serving cell and request set up E-RAB process can full decoupled and, that is: MeNB can ask SeNB to add serving cell according to wireless conditions, loading condition at any time, and does not relate to the request process of establishing of E-RAB.

Step 203:MeNB sends the connection reallocation message including MeNB configuration information and SeNB configuration information to described terminal, indicating described terminal when carrying out local connection reconfiguration operation, determining this dual link mode.

In this step 203, MeNB is constructed by the connection reallocation message of wireless heterogeneous networks (Radio Resource Control, RRC) signaling transmission according to own configuration information and SeNB configuration information.Described SeNB configuration information can be SeNB return to MeNB set up the information of carrying in response message, MeNB can modify to the partial value set up in response message that SeNB returns, can not understand the content set up in response message completely, be directly placed on and connect in reallocation message yet.

Following content can be comprised in described connection reallocation message:

1), measurement configuration information, identical with the measurement configuration information that current MeNB issues in conventional scheme.

2), MeNB configuration information, comprising: Radio Resource specialized configuration (configuration of physical layer configurations, MAC layer, SPS configuration, serving cell add/amendment/release list, MeNB SRB configures and DRB configuration (namely this carrying is only on MeNB) etc. of MeNB particular bearer).If what adopt is bearer-splitting mode, described DRB configuration comprises: the configuration of PDCP layer, eps-bearer mark, DRB mark, RLC join Logic Channel Identifier and configuration etc.

3), SeNB configuration information, comprising: cell index, cell ID, radio-resource-configuration (configuration of physical layer configurations, MAC layer, SPS configuration, serving cell add/amendment/release list, SeNB SRB configures and DRB configuration (namely this carrying is only on SeNB) etc. of SeNB particular bearer).If what adopt is bearer-splitting mode, described DRB configuration comprises rlc layer configuration, Logic Channel Identifier and configuration etc., if what adopt is non-bearer-splitting mode, in described SeNB configuration information, also comprise at least one information in PDCP layer configuration information, eps-bearer mark and DRB mark.

MeNB eats dishes without rice or wine to send to terminal to connect reallocation message by MeNB, also SeNB can be sent to, eat dishes without rice or wine to send to terminal by SeNB, in order to improve transmission reliability, can also eat dishes without rice or wine to eat dishes without rice or wine to send to terminal with SeNB respectively by MeNB, concrete send mode can be determined according to the channel condition of reality.

After terminal receives described connection reallocation message, respectively radio-resource-configuration is carried out to MeNB and SeNB part, simultaneously, according at least one information whether comprised in SeNB configuration information in the configuration of PDCP layer, eps-bearer mark and DRB mark, judge dual link mode, if comprised, then determine that this dual link mode is non-bearer-splitting mode; Otherwise, determine that dual link mode is bearer-splitting mode.

After terminal completes local connection reconfiguration operation, return reprovision to MeNB and complete message, described reprovision completes message and eats dishes without rice or wine to send by MeNB, also MeNB is transmitted to again after can eating dishes without rice or wine to send to SeNB by SeNB, in order to improve transmission reliability, can also eat dishes without rice or wine to eat dishes without rice or wine with SeNB to send respectively by MeNB, concrete send mode can be determined according to the channel condition of reality.

Step 204:MeNB returns to MME and sets up response message, completes the E-RAB process of establishing between MME.

Described foundation in response message carries downlink tunnel destination node, if this dual link is bearer-splitting mode, then described downlink tunnel destination node is MeNB, otherwise described downlink tunnel destination node is SeNB.

Described response message of setting up also can carry: the S1AP ID of MME/MeNB, the E-RAB list of foundation, if E-RAB sets up unsuccessfully, also can carry and set up failed E-RAB list.

Above-mentioned example 1, after MeNB first sets up E-RAB with SeNB, is setting up in the process of E-RAB with MME, and indicating terminal carries out local connection reconfiguration operation, and MeNB also can realize the scheme of the embodiment of the present invention one according to other orders.

Example 2:

As shown in Figure 5, still for MeNB is by the triggering of MME, set up the schematic flow sheet of dual link, in this example 2, MeNB with the E-RAB process of establishing of MME in send to terminal and comprise MeNB configuration information but the connection reallocation message not comprising SeNB configuration information, MeNB is after the E-RAB with MME has set up, E-RAB is set up again with SeNB, afterwards, the connection reallocation message comprising SeNB configuration information is sent again to terminal, in example 2, terminal has been carried out twice and has been connected reconfiguration operation, specifically comprises the following steps:

Step 301:MeNB receives the E-RAB foundation request that described MME initiates.

This step 301 is identical with the implementation of step 201, repeats no more herein.

Step 302:MeNB, when determining that dual link mode is bearer-splitting mode, sends the connection reallocation message comprising own configuration information to described terminal, indicate described terminal to carry out local connection reconfiguration operation.

Connection reallocation message in this step 302, compared with the connection reallocation message in example 1 involved by step 203, does not comprise SeNB configuration information.

Terminal is carried out local connection reconfiguration operation and is referred to and carry out radio-resource-configuration to MeNB part, and returns reprovision and complete message.

Step 303:MeNB to MME return carry downlink tunnel destination node set up response message, complete the E-RAB process of establishing between MME.

Because this dual link is bearer-splitting mode, described downlink tunnel destination node is MeNB.

Described response message of setting up also comprises: the S1AP ID of MME/MeNB, the E-RAB list of foundation, if E-RAB sets up unsuccessfully, also can carry and set up failed E-RAB list.

RAB E-RAB is set up between step 304:MeNB and SeNB.

The implementation procedure of this step 304 is identical with the implementation procedure of the step 202 in example 1, also can have Fig. 5 and Fig. 6 two kinds of situations.

The connection reallocation message comprising SeNB configuration information is sent to described terminal by step 305:MeNB, and indicate described terminal again to carry out local connection reconfiguration operation, terminal knows this dual link mode simultaneously.

Connection reallocation message involved in this step 305, compared with the connection reallocation message in example 1 involved by step 203, does not comprise MeNB configuration information.

Terminal is carried out local connection reconfiguration operation and is referred to and carry out radio-resource-configuration to SeNB part, and returns reprovision and complete message, and now, dual link process of establishing terminates.

Above example 1 and example 2 are all that the triggering being subject to MME with MeNB starts dual link process of establishing, certainly, MeNB also can when not being subject to MME and triggering, when transferring on SeNB according to load balancing condition, wireless channel condition or current part carrying on MeNB, initiatively start dual link process of establishing, the scheme of the embodiment of the present invention does not limit this.

Embodiment two:

The embodiment of the present invention two is on the basis of embodiment one scheme, proposes the changing method that MeNB carries out dual link mode, as shown in Figure 7, comprises the following steps:

When step 401:MeNB determines that the dual link mode of terminal needs to switch, between the SeNB that MeNB and terminal access, set up E-RAB.

When dual link mode is switched to non-bearer-splitting mode by bearer-splitting mode, the uplink tunnel destination node of the E-RAB set up between MeNB and SeNB is S-GW, when dual link mode is switched to bearer-splitting mode by non-bearer-splitting mode, the uplink tunnel destination node of the E-RAB set up between MeNB and SeNB is MeNB.

This step is identical with the process of establishing in example 2 with example 1, also can have kind of the situation of two shown in Fig. 8 and Fig. 9.

The connection reallocation message containing own configuration information and described SeNB configuration information is sent to described terminal by step 402:MeNB, indicates described terminal to determine the dual link mode after switching according to described connection reallocation message.

Described dual link mode is bearer-splitting mode or bearer-splitting mode, when having at least one information in the PDCP layer configuration information of micro-base station, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, the dual link mode after switching is non-bearer-splitting mode; Otherwise the dual link mode after switching is bearer-splitting mode.

Being described terminal in this step when carrying out local connection reconfiguration operation, determining dual link mode after switching.

Step 403:MeNB initiates path handover request to MME, carries out the switching of dual link mode.

When dual link mode is switched to non-bearer-splitting mode by bearer-splitting mode, the downlink tunnel destination node comprised in the handover request of described path is SeNB, indicate described MME that downlink tunnel destination node is switched to described SeNB from MeNB, otherwise, the downlink tunnel destination node comprised in the handover request of described path is MeNB, indicates described MME that downlink tunnel destination node is switched to MeNB from SeNB.

After described MME completes the switching of E-RAB, switch to MeNB return path and confirm, comprising uplink tunnel destination node during the switching of described path confirms is S-GW, now, if dual link mode switches to non-bearer-splitting mode by bearer-splitting mode, the data that then S-GW sends directly are sent to SeNB by E-RAB, and without the need to the forwarding through MeNB; Otherwise the data that S-GW sends after the forwarding of MeNB, then issue SeNB.

The process of establishing of E-RAB is described (preferably in above embodiment one and embodiment two, the adding procedure of serving cell can be had), similar for the amendment of E-RAB, dispose procedure, can be that MME initiates, or MeNB initiatively starts, can be even that SeNB initiates, as long as initiator notifies corresponding node amendment GTP tunnel destination node or deleting GTP tunnel.For sending to the RRC of terminal to connect reallocation message, can be realized by the DRB information of revising or deleting SeNB, message body structure is identical with the structure in example 1.

Embodiment three:

The embodiment of the present invention three describes a kind of dual link system belonged to embodiment one under same inventive concept, and as shown in Figure 10, described system comprises macro base station, sets up micro-base station of E-RAB with described macro base station, wherein:

Described macro base station is for determining that the dual link mode of terminal is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation, and, and after setting up E-RAB between described micro-base station, send the connection reallocation message comprising described micro-base station configuration information to described terminal, indicate described terminal according to described connection reallocation message determination dual link mode;

Described micro-base station is used for setting up E-RAB with described macro base station;

The optimizing process setting up E-RAB between macro base station and micro-base station is as follows:

Described macro base station sets up request specifically for initiating E-RAB to micro-base station, described E-RAB set up in request comprise described micro-base station is known this dual link mode is the indication information of the aggregation of resources that the aggregation of resources that is separated of carrying or non-bearing are separated, and receive that described micro-base station returns set up response message, complete the E-RAB process of establishing between described micro-base station;

Described micro-base station is carried out this locality and is configured, and return to described macro base station and set up response message after setting up request specifically for the E-RAB receiving described macro base station and initiate.

Preferably, described micro-base station is specifically at described Indication message being: during the resource allocation information of the described macro base station configured in OAM, is the aggregation of resources that the aggregation of resources that is separated of carrying or non-bearing are separated according to the dual link mode of the resource allocation information determination terminal of described macro base station; Or, at described Indication message be: during uplink tunnel destination node, if determine, described uplink tunnel destination node is macro base station, then determine that the dual link mode of terminal is the aggregation of resources that carrying is separated, if determine, described uplink tunnel destination node is S-GW, then determine that the dual link mode of terminal is the aggregation of resources that non-bearing is separated; Or, at described Indication message be: when representing that the dual link mode of terminal is the identification number of the aggregation of resources of non-bearing separation or the aggregation of resources of carrying separation, according to the dual link mode of described identification number determination terminal.

Preferably, described micro-base station is specifically for when according to described Indication message determination dual link mode being the aggregation of resources of non-bearing separation, in this locality configuration PDCP layer, eps-bearer mark and DRB mark, when determining that dual link mode is the aggregation of resources of carrying separation, without the need to identifying at this locality configuration PDCP layer, eps-bearer mark and DRB.

Preferably, described macro base station is also for before initiating E-RAB foundation request to micro-base station, or initiate E-RAB simultaneously to micro-base station, the serving cell for setting up described E-RAB is added to described micro-base station requests, or, to the serving cell for setting up described E-RAB that described micro-base station requests has been added.

Preferably, described system also comprises MME, and for setting up E-RAB between described macro base station, wherein, when dual link mode is the aggregation of resources of carrying separation, the downlink tunnel destination node of the E-RAB set up between macro base station and MME is described macro base station; Otherwise the downlink tunnel destination node of the E-RAB set up between macro base station and MME is micro-base station.

Macro base station sets up E-RAB respectively mode with described micro-base station and MME includes but not limited to following two kinds of modes:

Mode one:

Described MME sets up request specifically for initiating E-RAB to described macro base station, and receive that described macro base station returns set up response message time, complete the E-RAB process of establishing between macro base station;

The E-RAB foundation request that described macro base station is initiated specifically for receiving described MME, and after determining the dual link mode of terminal, and set up E-RAB between described micro-base station, after completing the E-RAB process of establishing between micro-base station, the connection reallocation message comprising own configuration information and described micro-base station configuration information is sent to described terminal, indicate described terminal determination dual link mode, backward MME13 return and set up response message.

Mode two:

Described MME sets up request specifically for initiating E-RAB to described macro base station, and receive that macro base station returns set up response message time, complete the E-RAB process of establishing between macro base station;

The E-RAB foundation request that described macro base station is initiated specifically for receiving described MME13, and when determining that dual link mode is the aggregation of resources of carrying separation, the connection reallocation message comprising own configuration information is sent to described terminal, after indicating described terminal to carry out local connection reconfiguration operation, return to MME and set up response message, and, after completing the E-RAB process of establishing between MME, set up E-RAB again and between described micro-base station, and the connection reallocation message comprising described micro-base station configuration information is sent to described terminal, indicate described terminal according to described micro-base station configuration information determination dual link mode.

Embodiment four:

The embodiment of the present invention four describes a kind of dual link switched system belonged to embodiment two under same inventive concept, and described system comprises macro base station, sets up micro-base station of E-RAB with described macro base station, wherein:

When macro base station is for determining that the dual link mode of terminal needs to switch, and set up E-RAB between micro-base station that terminal accesses, and the connection reallocation message comprising described micro-base station configuration information is sent to described terminal, indicate described terminal to determine the dual link mode after switching according to described connection reallocation message; Wherein: described dual link mode is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation, when having at least one information in the PDCP layer configuration information of micro-base station, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, the dual link mode after switching is the aggregation of resources that non-bearing is separated; Otherwise the dual link mode after switching is the aggregation of resources that carrying is separated;

Described micro-base station is used for setting up E-RAB with described macro base station.

Described system also comprises MME, wherein:

Embodiment five:

The embodiment of the present invention five also describes a kind of macro base station belonged to embodiment one and embodiment three under same inventive concept, and as shown in figure 11, described macro base station comprises dual link mode determination module 11, module 12 is set up in tunnel and indicating module 13, wherein:

Dual link mode determination module 11 is for determining that the dual link mode of terminal is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation;

E-RAB is set up between micro-base station that module 12 of setting up tunnel accesses for terminal;

Indicating module 13, for sending the connection reallocation message comprising described micro-base station configuration information to described terminal, indicates described terminal according to described connection reallocation message determination dual link mode;

Preferably, described indicating module 13 is specifically for sending described connection reallocation message by RRC signaling.

It is as follows that the optimal way setting up E-RAB between module 12 and micro-base station is set up in described tunnel:

Described tunnel is set up module 12 and is set up request specifically for initiating E-RAB to micro-base station, described E-RAB set up in request comprise described micro-base station is known this dual link mode is the indication information of the aggregation of resources that the aggregation of resources that is separated of carrying or non-bearing are separated, and receive that described micro-base station returns set up response message time, complete the E-RAB process of establishing between described micro-base station.

Preferably, module 12 is set up specifically for before micro-base station initiation E-RAB foundation request in described tunnel, or initiate E-RAB simultaneously to micro-base station, the Serving cell serving cell for setting up described E-RAB is added to described micro-base station requests, or, to the serving cell for setting up described E-RAB that described micro-base station requests has been added.

Preferably, described tunnel is set up module 12 and is also set up E-RAB with MME, be specially: module 12 is set up also for setting up E-RAB between MME in described tunnel, wherein, when dual link mode is the aggregation of resources of carrying separation, and the downlink tunnel destination node of the E-RAB set up between MME is described macro base station; Otherwise, and the downlink tunnel destination node of the E-RAB set up between MME is micro-base station.

Described tunnel is set up module 12 and is set up E-RAB respectively with micro-base station and MME and include but not limited to following two kinds of modes:

Mode one:

The E-RAB foundation request that module 12 is initiated specifically for receiving described MME is set up in described tunnel, and after determining the dual link mode of terminal, and set up E-RAB between described micro-base station, after completing the E-RAB process of establishing between micro-base station, the connection reallocation message comprising own configuration information and described micro-base station configuration information is sent to described terminal, indicate described terminal determination dual link mode, backward MME return and set up response message.

Mode two:

The E-RAB foundation request that module 12 is initiated specifically for receiving described MME is set up in described tunnel, and when determining that dual link mode is the aggregation of resources of carrying separation, the connection reallocation message comprising own configuration information is sent to described terminal, after indicating described terminal to carry out local connection reconfiguration operation, return to MME and set up response message, and, after completing the E-RAB process of establishing between MME, set up E-RAB again and between described micro-base station, and the connection reallocation message comprising described micro-base station configuration information is sent to described terminal, indicate described terminal according to described micro-base station configuration information determination dual link mode.

In the present embodiment five, also describe the terminal determining dual link mode by described macro base station instruction, as shown in figure 12, described terminal comprises receiver module 21 and dual link mode determination module 22, wherein:

Receiver module 21 is for the connection reconfiguration message of receiving package containing micro-base station configuration information;

Dual link mode determination module 22 is for according to described connection reallocation message determination dual link mode, wherein: when having at least one information in the PDCP layer configuration information of micro-base station, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, determine that dual link mode is the aggregation of resources that non-bearing is separated; Otherwise, determine that dual link mode is the aggregation of resources that carrying is separated.

Embodiment six:

The embodiment of the present invention six describes a kind of macro base station belonged to embodiment two and embodiment four under same inventive concept, and as shown in figure 13, described macro base station comprises switching judging module 31, module 32 is set up in tunnel and indicating module 33, wherein:

Switching judging module 31 is for judging that the dual link mode of terminal is the need of switching;

Module 32 is set up for when determining that the dual link mode of terminal needs to switch in tunnel, and set up E-RAB between micro-base station that terminal accesses, wherein, when the aggregation of resources that dual link mode switches to non-bearing to be separated by the aggregation of resources carrying separation, the uplink tunnel destination node of the E-RAB set up between macro base station and described micro-base station is S-GW, otherwise uplink tunnel destination node is macro base station;

Indicating module 33 is for sending the connection reallocation message comprising described micro-base station configuration information to described terminal, described terminal is indicated to determine the dual link mode after switching according to described connection reallocation message, wherein: described dual link mode is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation, when having at least one information in the PDCP layer configuration information of micro-base station, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, the dual link mode after switching is the aggregation of resources that non-bearing is separated; Otherwise the dual link mode after switching is the aggregation of resources that carrying is separated.

Preferably, described macro base station also comprises: path handover request module 34, for initiating path handover request to MME, wherein, when the aggregation of resources that dual link mode switches to non-bearing to be separated by the aggregation of resources carrying separation, the downlink tunnel destination node comprised in the handover request of described path is micro-base station, indicate described MME that downlink tunnel destination node is switched to described micro-base station from macro base station, otherwise, the downlink tunnel destination node comprised in the handover request of described path is macro base station, indicates described MME that downlink tunnel destination node is switched to macro base station from micro-base station.

In the present embodiment six, also describe the terminal determining dual link switching mode by described macro base station instruction, described terminal comprises receiver module and dual link mode determination module, wherein:

Receiver module is used for the connection reconfiguration message of receiving package containing micro-base station configuration information;

Dual link mode determination module is used for according to described connection reallocation message determination dual link mode, wherein: described dual link mode is the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation, when having at least one information in the PDCP layer configuration information of micro-base station, eps-bearer mark and DRB mark in described micro-base station configuration information that described connection reallocation message comprises, determine the aggregation of resources that dual link mode switches to non-bearing to be separated by the aggregation of resources carrying separation; Otherwise, determine the aggregation of resources that the aggregation of resources that dual link mode is separated by non-bearing switches to carrying to be separated.

By the method for the embodiment of the present invention, system and equipment, after setting up E-RAB by macro base station between micro-base station, the connection reallocation message comprising micro-base station configuration information is sent to terminal, terminal according in micro-base station configuration information whether in have the PDCP layer configuration information of micro-base station, eps-bearer to identify and at least one information in DRB mark determines dual link mode or dual link switching mode, in perfect 3GPP, terminal cannot know the problem of dual link mode; Meanwhile, Indication message that micro-base station sends according to macro base station (resource allocation information of the described macro base station configured in OAM, uplink tunnel destination node or identification number) determines this dual link mode, is also effectively supplementing current dual link scheme.

Those skilled in the art should understand, the embodiment of the application can be provided as method, system or computer program.Therefore, the application can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the application can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.

The application describes with reference to according to the flow chart of the method for the embodiment of the present application, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

In one typically configuration, described computer equipment comprises one or more processor (CPU), input/output interface, network interface and internal memory.Internal memory may comprise the volatile memory in computer-readable medium, and the forms such as random access memory (RAM) and/or Nonvolatile memory, as read-only memory (ROM) or flash memory (flash RAM).Internal memory is the example of computer-readable medium.Computer-readable medium comprises permanent and impermanency, removable and non-removable media can be stored to realize information by any method or technology.Information can be computer-readable instruction, data structure, the module of program or other data.The example of the storage medium of computer comprises, but be not limited to phase transition internal memory (PRAM), static RAM (SRAM), dynamic random access memory (DRAM), the random access memory (RAM) of other types, read-only memory (ROM), Electrically Erasable Read Only Memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tape, tape magnetic rigid disk stores or other magnetic storage apparatus or any other non-transmitting medium, can be used for storing the information can accessed by computing equipment.According to defining herein, computer-readable medium does not comprise the computer readable media (transitory media) of non-standing, as data-signal and the carrier wave of modulation.

Although described the preferred embodiment of the application, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the application's scope.

Obviously, those skilled in the art can carry out various change and modification to the application and not depart from the spirit and scope of the application.Like this, if these amendments of the application and modification belong within the scope of the application's claim and equivalent technologies thereof, then the application is also intended to comprise these change and modification.

Claims

1. a dual link method, is characterized in that, described method comprises:

2. the method for claim 1, is characterized in that, described connection reallocation message is sent by radio resource control RRC signaling.

3. the method for claim 1, is characterized in that, sets up E-RAB, specifically comprise between macro base station and described micro-base station:

4. method as claimed in claim 3, it is characterized in that, described Indication message is: the resource allocation information of the described macro base station configured in operation management maintain OAM, makes micro-base station be the aggregation of resources of carrying separation or the aggregation of resources of non-bearing separation according to the dual link mode of the resource allocation information determination terminal of described macro base station; Or

5. method as claimed in claim 3, is characterized in that, macro base station is initiated after E-RAB sets up request to micro-base station, and receive described set up response message before, described method also comprises:

6. method as claimed in claim 3, is characterized in that, before macro base station initiates E-RAB foundation request to micro-base station, or macro base station initiates E-RAB simultaneously to micro-base station, and described method also comprises:

7. the method for claim 1, it is characterized in that, when dual link mode is the aggregation of resources of carrying separation, the uplink tunnel destination node of the E-RAB set up between described macro base station and described micro-base station is described macro base station, otherwise the uplink tunnel destination node of the E-RAB set up between macro base station and described micro-base station is gateway S-GW.

8. the method for claim 1, is characterized in that, described method also comprises:

Set up E-RAB between described macro base station and mobile management entity MME, wherein, when dual link mode is the aggregation of resources of carrying separation, the downlink tunnel destination node of the E-RAB set up between macro base station and MME is described macro base station; Otherwise the downlink tunnel destination node of the E-RAB set up between macro base station and MME is micro-base station.

9. method as claimed in claim 8, is characterized in that, macro base station with set up E-RAB respectively between described micro-base station and MME and send to described terminal by being connected reallocation message, specifically comprise:

E-RAB is set up between macro base station and described micro-base station;

10. method as claimed in claim 8, is characterized in that, macro base station respectively with set up E-RAB between described micro-base station and MME and send to described terminal by being connected reallocation message, specifically comprise:

11. 1 kinds of dual link changing methods, is characterized in that, described method comprises:

12. methods as claimed in claim 11, it is characterized in that, described method also comprises:

13. 1 kinds of dual link systems, is characterized in that, described system comprises macro base station, sets up micro-base station of E-RAB with described macro base station, wherein:

14. systems as claimed in claim 13, it is characterized in that, described connection reallocation message is sent by radio resource control RRC signaling.

15. systems as claimed in claim 13, is characterized in that,

Described macro base station, request is set up specifically for initiating E-RAB to micro-base station, described E-RAB set up in request comprise described micro-base station is known this dual link mode is the indication information of the aggregation of resources that the aggregation of resources that is separated of carrying or non-bearing are separated, and receive that described micro-base station returns set up response message, complete the E-RAB process of establishing between described micro-base station;

16. systems as claimed in claim 15, is characterized in that,

Described micro-base station, specifically for being: during the resource allocation information of the described macro base station configured in OAM, be the aggregation of resources that the aggregation of resources that is separated of carrying or non-bearing are separated according to the dual link mode of the resource allocation information determination terminal of described macro base station at described Indication message; Or, at described Indication message be: during uplink tunnel destination node, if determine, described uplink tunnel destination node is macro base station, then determine that the dual link mode of terminal is the aggregation of resources that carrying is separated, if determine, described uplink tunnel destination node is S-GW, then determine that the dual link mode of terminal is the aggregation of resources that non-bearing is separated; Or, at described Indication message be: when representing that the dual link mode of terminal is the identification number of the aggregation of resources of non-bearing separation or the aggregation of resources of carrying separation, according to the dual link mode of described identification number determination terminal.

17. systems as claimed in claim 15, is characterized in that,

Described micro-base station, specifically for when according to described Indication message determination dual link mode being the aggregation of resources of non-bearing separation, in this locality configuration PDCP layer, eps-bearer mark and DRB mark, when determining that dual link mode is the aggregation of resources of carrying separation, without the need to identifying at this locality configuration PDCP layer, eps-bearer mark and DRB.

18. systems as claimed in claim 15, is characterized in that,

Described macro base station, also for before initiate E-RAB foundation request to micro-base station, or initiate E-RAB simultaneously to micro-base station, the serving cell for setting up described E-RAB is added to described micro-base station requests, or, to the serving cell for setting up described E-RAB that described micro-base station requests has been added.

19. systems as claimed in claim 13, it is characterized in that, described system also comprises:

20. systems as claimed in claim 19, is characterized in that,

Described MME, sets up request specifically for initiating E-RAB to described macro base station, and receive that described macro base station returns set up response message time, complete the E-RAB process of establishing between macro base station;

21. systems as claimed in claim 19, is characterized in that,

Described MME, sets up request specifically for initiating E-RAB to described macro base station, and receive that macro base station returns set up response message time, complete the E-RAB process of establishing between macro base station;

22. 1 kinds of dual link switched systems, is characterized in that, described system comprises macro base station, sets up micro-base station of E-RAB with described macro base station, wherein:

23. the system as claimed in claim 22, is characterized in that, described system also comprises MME, wherein:

24. 1 kinds of macro base stations, is characterized in that, described macro base station comprises:

25. macro base stations as claimed in claim 24, is characterized in that,

Described indicating module, specifically for sending described connection reallocation message by RRC signaling.

26. macro base stations as claimed in claim 24, is characterized in that,

Module is set up in described tunnel, request is set up specifically for initiating E-RAB to micro-base station, described E-RAB set up in request comprise described micro-base station is known this dual link mode is the indication information of the aggregation of resources that the aggregation of resources that is separated of carrying or non-bearing are separated, and receive that described micro-base station returns set up response message time, complete the E-RAB process of establishing between described micro-base station.

27. macro base stations as claimed in claim 26, is characterized in that,

Module is set up in described tunnel, specifically for initiate E-RAB foundation request to micro-base station before, or initiate E-RAB simultaneously to micro-base station, the Serving cell serving cell for setting up described E-RAB is added to described micro-base station requests, or, to the serving cell for setting up described E-RAB that described micro-base station requests has been added.

28. macro base stations as claimed in claim 24, is characterized in that,

Module is set up in described tunnel, and also for setting up E-RAB between MME, wherein, when dual link mode is the aggregation of resources of carrying separation, and the downlink tunnel destination node of the E-RAB set up between MME is described macro base station; Otherwise, and the downlink tunnel destination node of the E-RAB set up between MME is micro-base station.

29. macro base stations as claimed in claim 28, is characterized in that,

Module is set up in described tunnel, the E-RAB initiated specifically for receiving described MME sets up request, and after determining the dual link mode of terminal, and set up E-RAB between described micro-base station, after completing the E-RAB process of establishing between micro-base station, the connection reallocation message comprising own configuration information and described micro-base station configuration information is sent to described terminal, indicates described terminal determination dual link mode, backward MME return and set up response message.

30. macro base stations as claimed in claim 28, is characterized in that,

Module is set up in described tunnel, the E-RAB initiated specifically for receiving described MME sets up request, and when determining that dual link mode is the aggregation of resources of carrying separation, the connection reallocation message comprising own configuration information is sent to described terminal, after indicating described terminal to carry out local connection reconfiguration operation, return to MME and set up response message, and, after completing the E-RAB process of establishing between MME, set up E-RAB again and between described micro-base station, and the connection reallocation message comprising described micro-base station configuration information is sent to described terminal, indicate described terminal according to described micro-base station configuration information determination dual link mode.

31. 1 kinds of terminals, is characterized in that, described terminal comprises:

32. 1 kinds of macro base stations, is characterized in that, described macro base station comprises:

33. macro base stations as claimed in claim 32, it is characterized in that, described macro base station also comprises:

34. 1 kinds of terminals, is characterized in that, described terminal comprises: