CN102781048B

CN102781048B - Method and device for processing messages

Info

Publication number: CN102781048B
Application number: CN201210264302.0A
Authority: CN
Inventors: 张亮亮; 陈卓; 李亚娟; 常俊仁; 王燕; 彭炎
Original assignee: Huawei Technologies Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2009-09-30
Filing date: 2010-04-30
Publication date: 2015-03-11
Anticipated expiration: 2030-04-30
Also published as: CN102781048A

Abstract

The embodiment of the invention discloses a method and a device for processing messages, which belong to the technical field of communication. The method comprises the following steps: receiving a notice whether an X2 interface between the site and the adjacent site is available, and using an S1 interface to send messages when the X2 interface is not available; and/or receiving a notice whether the S1 interface between the site and the adjacent site is available, and using the X2 interface to send messages when the S1 interface is not available. The technical scheme can ensure normal communication and reduce the possibility of communication failure.

Description

Message treatment method, device

Technical field

The present invention relates to communication technical field, particularly relate to a kind of message treatment method, device.

Background technology

ITU-R (Radiocommunication Sector of ITU in 2006, International Telecommunication Union's radio communication group) formal by B3G (BeyondThirdGenerationin mobile communication system, super 3 g mobile communication system, also known as forth generation mobile communication) technology called after IMT-Advanced (IMT-Advanced) technology.IMT-Advanced technology needs to realize higher data rate and larger power system capacity, Target peak rate is: low speed moves, more than 1Gbps (Gigabits per second), 100Mbps (MBPS) under high-speed mobile, wide area covering scene under focus covering scene.

Current each standardization body formally or is off the record carrying out the research for IMT-Advanced, wherein also comprises 3GPP (3rd Generation Partnership Project, third generation partner program) standardization body.3GPP is just at standardized LTE (Long Term Evolution, Long Term Evolution) technology had the technical characteristic of part IMT-Advanced, 3GPP prepares LTE to be evolved to LTE-A (LTE-Advanced, senior Long Term Evolution) technology further.

On the one hand, IMT-Advanced system proposes very high system capacity requirements; But on the other hand, the large bandwidth frequency spectrum being enough to support high power capacity only may find in higher frequency band, and the path loss of frequency range high like this and penetration loss are all larger, are difficult to the covering realized.Relay (relaying), in order to meet the capacity requirement of IMT-Advanced, studies as a kind of candidate technologies improving power system capacity and covering by LTE-A at present.

So-called relaying technique, for better simply double bounce relaying, exactly the wireless link between base station and subscriber equipment is divided into the wireless link between base station and relay station, these two links of the wireless link between relay station and subscriber equipment, thus have an opportunity a second-rate link to replace with two good links of quality, to obtain higher link capacity and better to cover.

In LTE wireless network, the interface definition related generally to is as follows:

Un interface: the interface between relaying and its serving BS;

Uu interface: the interface between subscriber equipment and its service relay;

Interface between S1 interface: MME (Moblity Management Entity, Mobility Management Entity)/S-GW (Serving Gate Way, gateway) and base station;

X2 interface: the interface between base station.

In LTE wireless network, UE (User Equipment, subscriber equipment) business be mapped to DRB (Data Radio Bearer at Uu interface, Data Radio Bearer), eNB (eNodeB, base station) can DRB belonging to identification data carry out respective handling to data.In LTE-A junction network, relay station, such as Type-1 relays, by base station access network network.LTE UE supported by relay station, and at LTE UE, relay station is functionally consistent with LTE eNB.

Prior art provides a kind of LTE-A trunk protocol framework, if Un interface employs S1 message, so base station will use S1 message in EPC (Evoled packet core network Evolved Packet Core) side, if and Un interface employs X2 message, so base station will use X2 message in EPC side.

Below with in subscriber equipment handoff procedure, it is example that relaying uses S1 message to initiate handover request message to base station, and said process is described.

Base station is after receiving the handover request message of S1 interface (S1-AP:HO required message), only may revise the S1AP UE ID (subscriber equipment S1 Application Protocol mark) of this S1 message, other parts are not done to change, thus forward this S1 handover request message (S1AP:HO required message) to MME, carry out corresponding S1 switching flow.S1-AP or S1AP represents S1 Application Protocol (S1 Application Protocol) herein.

Or similarly, base station receives the RRC information carrying this S1 handover request message content, after base station parses this S1 message, corresponding S1 switching flow will be initiated in core-network side.In like manner for X2 message, as base station receives the RRC information carrying this X2 handover request message content, after base station parses this X2 message, corresponding X2 switching flow will be initiated in core-network side.

Inventor is realizing in process of the present invention, finds that prior art at least exists following deficiency:

X2 interface and S1 interface use dumb, and message content can not be transmitted smoothly, and signaling process is comparatively cumbersome.Such as, in subscriber equipment handoff procedure, at Un interface, when relay station sends X2 message to source base station, source base station will correspondingly use X2 message to send information to target BS.If the X2 interface now between source base station and target BS is unavailable, so, source base station can only by the handover request of corresponding X2 message refusal relay station.If relay station uses X2 message to initiate handover request all the time, and X2 interface between source base station and target BS is always unavailable, and so source base station will be refused to switch always.And relay station also unclear this handoff failure due to X2 interface unavailable and cause.Especially when there being multiple UE under relay station, the scene that different UEs all experiences this kind " X2 HO (HandOver switches) failure " may repeat.At Un interface, relay station sends S1 message to base station, and when the S1 interface of base station and core-network side is unavailable, problem exists equally.

Summary of the invention

The embodiment of the present invention provides a kind of message treatment method, device, to ensure that communication is normally carried out.

According to one embodiment of the invention, provide a kind of message treatment method, the method comprises:

Receive X2 interface between neighbor site whether can notice, when X2 interface is unavailable, use S1 interface to send information;

And/or,

Receive S1 interface between neighbor site whether can notice, when S1 interface is unavailable, use X2 interface to send information.

According to another embodiment of the present invention, provide a kind of message treatment method, the method comprises:

Generate one notice, and in this notice by the X2 interface between services sites can neighbor site corresponding to cell ID be services sites community; Send this notice to described services sites subordinate relay station, can use to indicate the X2 interface between this services sites and neighbor site; Or

Generate a notice, and be services sites community by the cell ID corresponding to disabled for the X2 interface between services sites neighbor site in this notice; This notice is sent, to indicate the X2 interface between this services sites and neighbor site unavailable to described services sites subordinate relay station.

According to another embodiment of the present invention, provide a kind of message processing apparatus, this device comprises:

First receiver module, for receive X2 interface between neighbor site whether can notice;

First sending module, for when X2 interface is unavailable, uses S1 interface to send information;

And/or,

Second receiver module, for receive S1 interface between neighbor site whether can notice;

Second sending module, for when S1 interface is unavailable, uses X2 interface to send information.

According to another embodiment of the present invention, provide a kind of message processing apparatus, this device comprises: notice generation module and notice sending module;

Described notice generation module, for generating a notice, and in this notice by the X2 interface between services sites can neighbor site corresponding to cell ID be services sites community; Described notice sending module, for sending this notice to described services sites subordinate relay station, can use to indicate the X2 interface between this services sites and neighbor site; Or

Cell ID corresponding to disabled for X2 interface between services sites neighbor site for generating a notice, and is services sites community by described notice generation module in this notice; Described notice sending module, for sending this notice, to indicate the X2 interface between this services sites and neighbor site unavailable to described services sites subordinate relay station.

According to the description to technique scheme, whether the embodiment of the present invention has the following advantages: by using to the X2 interface between relay station notice and neighbor site or S1 interface, make relay station to select correct interface communication, ensure that communication is normally carried out, reduce the possibility occurring communication failure.

Accompanying drawing explanation

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

Fig. 1 is a concrete implementing procedure figure of message treatment method in the embodiment of the present invention;

Fig. 2 is another concrete implementing procedure figure of message treatment method in the embodiment of the present invention;

Fig. 3 be in the embodiment of the present invention message treatment method at a concrete implementing procedure figure of handoff scenario;

Fig. 4 be in the embodiment of the present invention message treatment method at another concrete implementing procedure figure of handoff scenario;

Fig. 5 be in the embodiment of the present invention message treatment method at the another concrete implementing procedure figure of handoff scenario;

Fig. 6 be in the embodiment of the present invention message treatment method at a concrete implementing procedure figure again of handoff scenario;

Fig. 7 is when to switch target in the embodiment of the present invention be the relay station under another base station having S1 interface to be connected with the serving BS of relay station, the instantiation flow chart of message treatment method;

Fig. 8 is when to switch target in the embodiment of the present invention be the relay station under another base station having S1 interface to be connected with the serving BS of relay station, the instantiation flow chart of message treatment method;

Fig. 9 is when to switch target in the embodiment of the present invention be the relay station under same serving BS, the instantiation flow chart of message treatment method;

Figure 10 is when to switch target in the embodiment of the present invention be the relay station under same serving BS, another instantiation flow chart of message treatment method;

Figure 11 sends the instantiation flow chart that first retransmits the message treatment method of notice in the embodiment of the present invention;

Figure 12 sends the instantiation flow chart that second retransmits the message treatment method of notice in the embodiment of the present invention;

Figure 13 A, Figure 13 B are the process chart of another message treatment method in the embodiment of the present invention;

Figure 14 A, Figure 14 B are the process chart of another message treatment method in the embodiment of the present invention;

Figure 15, Figure 16 are the concrete enforcement schematic diagram of message treatment method under handoff scenario in the embodiment of the present invention;

Figure 17 is the structural representation of a kind of message processing apparatus in the embodiment of the present invention;

Figure 18 is the structural representation of another message processing apparatus in the embodiment of the present invention;

Figure 19 is the structural representation of another message processing apparatus in the embodiment of the present invention;

Figure 20 is the structural representation of another message processing apparatus in the embodiment of the present invention;

The schematic diagram of a kind of communication network that Figure 21 provides for the embodiment of the present invention;

A kind of cell information of base station that Figure 22 a provides for the embodiment of the present invention and the schematic diagram of neighbor cell message;

A kind of cell information of base station that Figure 22 b provides for the embodiment of the present invention and the schematic diagram of neighbor cell message;

A kind of cell information of base station that Figure 22 c provides for the embodiment of the present invention and the schematic diagram of neighbor cell message;

The schematic diagram of a kind of message processing apparatus that Figure 23 provides for the embodiment of the present invention.

Embodiment

For making the object of the embodiment of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the embodiment of the present invention is described in further details.At this, schematic description and description of the present invention is for explaining the present invention, but not as a limitation of the invention.

Message treatment method in the embodiment of the present invention can comprise: receive X2 message to obtain the information of X2 message, uses S1 message to send the information of described X2 message; And/or, receive S1 message to obtain the information of S1 message, use X2 message to send the information of described S1 message, thus realize the flexible use of X2 interface and S1 interface, ensure the smooth transmission of message content, optimize signaling process.In embodiments of the present invention, described S1 message/X2 message i.e. S1 signaling/X2 signaling, the information page in described S1 message/X2 message is exactly the content will passed on by corresponding message.

As shown in Figure 1, when specifically implementing, the flow process of above-mentioned message treatment method can comprise:

Step 101, reception X2 message;

The information of step 102, acquisition X2 message;

Step 103, use S1 message send the information of X2 message.

Can be learnt by Fig. 1 flow process, in above-mentioned message treatment method, receive X2 message to obtain the information of X2 message, S1 message is used to send the information of X2 message, the flexible use of X2 interface and S1 interface can be realized, ensure the smooth transmission of message content, optimize signaling process.The present embodiment is particularly useful for the disabled situation of X2 interface between network node and neighbor site, after a network node receives the X2 message of transmit leg, finds that the X2 interface between itself and neighbor site is unavailable, and S1 message can be used to send corresponding contents.

As shown in Figure 2, when specifically implementing, the flow process of above-mentioned message treatment method can comprise:

Step 201, reception S1 message;

The information of step 202, acquisition S1 message;

Step 203, use X2 message send the information of S1 message.

Can be learnt by Fig. 2 flow process, in above-mentioned message treatment method, receive S1 message to obtain the information of S1 message, X2 message is used to send the information of S1 message, the flexible use of X2 interface and S1 interface can be realized, ensure the smooth transmission of message content, optimize signaling process.The present embodiment is particularly useful for the disabled situation of S1 interface between network node and neighbor site, after a network node receives the S1 message of transmit leg, finds that the S1 interface between itself and neighbor site is unavailable, and X2 message can be used to send corresponding contents.

Shown in Fig. 1 and Fig. 2, flow process can be used alone, and also can be combined.

During concrete enforcement, above-mentioned message treatment method can be implemented by the device that can realize its function, such as, implemented by devices such as base station, relay station or websites.Such as when being implemented by base station, base station except can have in prior art change relay station send except the function of the UEID of message, also can revise outside referential function, message that relay station sends can also be resolved in base station, obtain the information of this message, thus the form of message can be changed, the conversion of the information of message is carried the message to another kind of form.

During concrete enforcement, the described X2 message received, RRC (Radio ResourceControl can be carried on, radio resource control) in message, such as this X2 message is integrally included in RRC information, after recipient resolves this RRC information, just directly can obtain a complete X2 message; Certainly, this X2 message also can be carried in other message.In addition, described in the X2 message that receives, also can be exactly an independent X2 message.What recipient received is exactly a complete X2 message.

In like manner also there is same situation for S1 message.The described S1 message received, can be carried in RRC information, such as, this S1 message be integrally included in RRC information in RRC information, after recipient resolves this RRC information, just directly can obtain a complete S1 message; Certainly, this S1 message also can be carried in other message.In addition, described in the S1 message that receives, also can be exactly an independent S1 message.What recipient received is exactly a complete S1 message.

During concrete enforcement, in above-mentioned message treatment method, receiving X2 message can have multiple implementation with the information obtaining X2 message, such as, directly receives X2 message, resolves the X2 message of reception to obtain the information of X2 message; And for example, first receive the RRC information carrying X2 message, then carry the RRC information of X2 message described in resolving, thus obtain X2 message, the X2 message that further parsing obtains is to obtain the information of X2 message.Certainly, receiving S1 message also can have multiple implementation with the information obtaining S1 message, such as, directly receives S1 message, resolves the S1 message of reception to obtain the information of S1 message; And for example, first receive the RRC information carrying S1 message, then resolve the RRC information of described carrying S1 message, thus obtain S1 message, resolve the S1 message of acquisition further to obtain the information of S1 message.

Lift an example, suppose to perform above-mentioned message treatment method by base station, then the S1 message that uses of Un interface or X2 message, can be after relay station receives the message that subscriber equipment sends, and needs the message received thus to send the S1 message of carrying corresponding information or X2 message to core net; Also can be relay station because self reason produces S1 message or X2 message and situation about sending, such as, in mobile relay situation, mobile relay initiates handover request to base station, for the switching of self, S1 message/X2 is such as used to carry former RRC information-measurement reporting message especially.

In a word, the S1 message that Un interface is used or X2 message, during concrete enforcement, the S1 message that relay station sends or X2 message can be carried on other message, as sent to base station in RRC information, resolve RRC information by base station, obtain S1 message or the X2 message of RRC information carrying, thus in base station and core net transmission.Certainly, the S1 message that relay station sends or X2 message can also be exactly S1 message or the X2 message of an independent completion, and performance is exactly a S1 message or X2 message.

In an embodiment, the information using S1 message to send X2 message can have multiple implementation, such as: send resolving the information carrying obtained from X2 message to S1 message; Certainly, send to S1 message also can have multiple implementation by resolving the information carrying obtained from X2 message, such as: X2 message entirety is included in S1 message and sends, namely, by resolve from X2 message obtain information carrying send to S1 message time, original X2 message is not done to change, and is directly packaged in S1 message and sends; Or, concrete also can carry out some amendment to X2 message when implementing, then carry and send to S1 message, such as carry out some stylistic amendments, or re-assembly in S1 message after the information of original X2 message is broken.

Similar, the information using X2 message to send S1 message also can have multiple implementation, such as: send resolving the information carrying obtained from S1 message to X2 message; Certainly, send to X2 message also can have multiple implementation by resolving the information carrying obtained from S1 message, such as: S1 message entirety is included in X2 message and sends, namely, by resolve from S1 message obtain information carrying send to X2 message time, original S1 message is not done to change, and is directly packaged in X2 message and sends; Or, concrete also can carry out some amendment to S1 message when implementing, then carry and send to X2 message, such as carry out some stylistic amendments, or re-assembly in X2 message after the information of original S1 message is broken.

Alternatively, in an embodiment, the information using S1 message to send X2 message can also have a precondition, and this precondition can be: X2 interface is unavailable.That is, when X2 interface is unavailable, S1 message is used to send the information of X2 message.

Certainly, the information using S1 message to send X2 message during concrete enforcement is also not limited under the disabled precondition of X2 interface.This precondition can be preset as required, such as, this precondition is preset as: switching target is another website (as base station, relay station etc.) having direct or indirect S1 interface to be connected with the serving BS of relay station.Especially, another base station having S1 interface with the serving BS of relay station as switched target, this S1 interface is indirect interface, and serving BS carries out S1 by an intermediate network node (as MME, base station, relay station etc.) or multiple network node with this destination node (website or the node such as relay station, relay station as under another base station, another base station) and is connected.And for example switching target is another relay station under serving BS, and so this S1 interface can be just direct S1 interface.Be no matter interface or the indirectly S1 interface of direct S1, if meet this precondition, then after this serving BS receives X2 message, the information of X2 message can be obtained, using S1 message to send the information of X2 message to switching target; And for example, this precondition is preset as: switching target is the relay station under another base station having S1 interface to be connected with the serving BS of relay station, if meet this precondition, after then this serving BS receives X2 message, the information of X2 message can being obtained, using S1 message to send the information of X2 message to switching target; In addition, also can not this precondition, as long as namely have received X2 message, just obtain the information of X2 message, and use S1 message to send the information of X2 message.

Also have some possible situations, whether relay station does not meet the judgement of certain precondition, but send S1 Handover Required message directly to its serving BS, by serving BS according to the difference switching target, carry out handover operation, such as: if switching target is the relay station under same serving BS, then serving BS sends S1 Handover Request to destination node; If switching target is this serving BS, then serving BS can be agreed to switch, and sends S1 Handover Command directly to relay station.Now base station is equivalent to the effect of an agency (proxy).

Similar, the information using X2 message to send S1 message can have a precondition, and this precondition can be: S1 interface is unavailable.That is, when S1 interface is unavailable, X2 message is used to send the information of S1 message.Certainly, the information using X2 message to send S1 message during concrete enforcement is also not limited under the disabled precondition of S1 interface.This precondition can be preset as required, similar with aforementioned X2 message of resolving, and repeats no more here.In addition, also can not this precondition, as long as namely have received S1 message, just obtain the information of S1 message, and use X2 message to send the information of S1 message.

Lift an example below, the concrete enforcement of above-mentioned message treatment method in practical application scene is described.In this example, application scenarios is: corresponding handoff process is carried out after receiving the handover request that relay station sends in base station, and namely described X2 message or S1 message are for initiating handover request.Certainly, the scene of X2 interface and S1 interface is not limited to this kind of application scenarios in enforcement, as long as can be used flexibly by above-mentioned message treatment method.

As shown in Figure 3, in this example, message treatment method can comprise:

The handover request that step 301, reception use X2 message to send;

Step 302, resolve the handover request that described use X2 message sends, obtain described handover request;

Step 303, use S1 message send described handover request.

By implementing flow process shown in Fig. 3, X2 interface and S1 interface can be used flexibly to send handover request, ensure handover request smooth transmission in a network, optimize signaling handling process.Concrete, relay station sends X2-AP:HO Request (handover request) message to base station, base station receives the information of rear this message of acquisition, for a certain reason (such as X2 interface is unavailable), base station uses S1-AP:HO Required message that the information of message is sent to MME, then informs this handover request of target BS by the S1-AP message of MME.Idiographic flow can as shown in Figure 4, comprise:

Step 401, relay station use X2 message to send handover request to source base station (Source eNB) (X2-AP:HO Request);

Step 402, source base station parse the information of X2-AP:HO Request message, use S1 message to send this handover request (S1-AP:HO Required) message to mobile management entity (MME); The precondition performing this step is optional, such as, can be that X2 interface is unavailable;

Step 403, MME use S1 message (S1-AP:HO Request) to send this handover request to target BS (Target eNB);

Step 404, target BS, when allowing to switch, use S1 message (S1-AP:HO Request ACK) to return handoff response to MME;

Step 405, MME use S1 message (S1-AP:HO Command) to send switching command to source base station;

Step 406, source base station parse the information of S1-AP:HO Command message, use X2 message (X2-AP:HO Request ACK) i.e. handoff response to return to relay station the S1 message content parsed.

Flow process can be seen as shown in Figure 4, in above-mentioned handoff procedure, if source base station receives the X2 message that relay station is sent, then can obtain the information of X2 message, uses S1 message that the information of X2 message is sent to core-network side; Be in particular X2 message-handover request message (X2-AP:HO Request) that base station is receiving relay station and sends, then can parse the information of this X2 handover request message, carry out S1 switching flow with the associated stations of core net simultaneously, especially, S1 message is used the information of the X2 message of acquisition to be carried in S1 message (S1-AP:HO Required), carry out some stylistic amendments possibly, or re-assembly in S1 message after the information of original X2 message is broken, make the content and the form that meet S1 handover request message in a word.Then this S1 message (S1-AP:HO Required) is sent to core-network side as MME, then is sent to target BS by MME, and then carry out S1 switching flow.In like manner, if source base station receives the S1 message that core-network side is sent, then can obtain the information of S1 message, use X2 message that the information of S1 message is sent to relay station.Especially, base station uses X2 message to be carried in X2 message (X2-AP:HO Request ACK) i.e. handoff response by the information of the S1 message (S1-AP:HO Command) obtained, carry out some stylistic amendments possibly, or re-assembly in S1 message after the information of original S1 message is broken, make the content and the form that meet S1 handover request message in a word.Then this X2 message (X2-AP:HO Request ACK) i.e. handoff response is sent to relay station.Namely, the X2 message that relaying (source node) sends can be resolved in base station, simultaneously according to situation or certain reason of oneself S1 or X2 interface, the information of the information received is carried to corresponding S1 message repeating destination node, this destination node can be such as website or the node such as relay station, gateway under MME or another base station, another relay station, another base station; Otherwise base station receives the S1 message of core-network side, the information of the information received can be carried to corresponding X2 message and be transmitted to relay station, thus complete the signaling process originally needing to use X2 message to carry out.During concrete enforcement, the message of other type also can carry out similar process, is not limited to aforementioned handover request and handoff response.

As shown in Figure 5, in this example, message treatment method can comprise:

The handover request that step 501, reception use S1 message to send;

Step 502, resolve the handover request that described use S1 message sends, obtain described handover request;

Step 503, the described handover request using X2 message to send.

By implementing flow process shown in Fig. 5, X2 interface and S1 interface can be used flexibly to send handover request, ensure handover request smooth transmission in a network, optimize signaling handling process.Concrete, when relay station initiates S1-AP:HO Required message to base station, base station receives the information of rear this message of acquisition, alternatively, for a certain reason (such as S1 interface is unavailable), base station uses X2-AP:HO Request message that the information of message is sent to target BS.Idiographic flow can as shown in Figure 6, comprise:

Step 601, relay station use S1 message to send handover request to source base station (Source eNB) (S1-AP:HO Required);

Step 602, source base station parse the information of S1-AP:HO Required message, use X2 message to send this handover request to target BS (X2-AP:HO Request); The precondition performing this step is optional, such as, can be that S1 interface is unavailable;

Step 603, target BS, when allowing to switch, use X2 message (X2-AP:HO Command) to return handoff response to source base station;

Step 604, source base station parse the information of X2-AP:HO Command message, use S1 message (S1-AP:HO Request ACK) i.e. handoff response to return to relay station the information of the X2 message parsed.

Give some instances again below, the concrete enforcement of above-mentioned message treatment method in practical application scene is described.

As shown in Figure 7, in an embodiment, switching target is the relay station under another base station having S1 interface to be connected with the serving BS of relay station, then the message treatment method in this example can comprise:

Step 701, source relay station use S1 message to send handover request to source base station (Source eNB) (S1-AP:HO Required);

Step 702, source base station parse the information of S1-AP:HO Required message, use X2 message to send this handover request to target BS (X2-AP:HO Request); The precondition performing this step is optional, such as, can be that S1 interface is unavailable;

Step 703, target BS parse the information of X2-AP:HO Request message, use S1 message to send this handover request to the relay station (S1-AP:HO Required) under target BS; The precondition performing this step is optional, such as, can be that X2 interface is unavailable;

Relay station under step 704, target BS, when allowing to switch, uses S1 message (S1-AP:HO Request ACK) to return handoff response to target BS;

Step 705, target BS parse the information of S1-AP:HO Request ACK message, use X2 message (X2-AP:HO Command) to send switching command to source base station;

Step 706, source base station parse the information of X2-AP:HO Command message, use S1 message (S1-AP:HO Request ACK) i.e. handoff response to return to relay station the information of the X2 message parsed.

As shown in Figure 8, in an embodiment, switching target is the relay station under another base station having S1 interface to be connected with the serving BS of relay station, then the message treatment method in this example can comprise:

Step 801, relay station use X2 message to send handover request to source base station (Source eNB) (X2-AP:HO Request);

Step 802, source base station parse the information of X2-AP:HO Request message, use S1 message to send this handover request to mobile management entity (MME) (S1-AP:HO Required); The precondition performing this step is optional, such as, can be that X2 interface is unavailable;

Step 803, MME use S1 message (S1-AP:HO Required) to send this handover request to target BS (Target eNB);

Step 804, target BS parse the information of S1-AP:HO Required message, use X2 message to send this handover request to the relay station (X2-AP:HO Request) under target BS; The precondition performing this step is optional, such as, can be that S1 interface is unavailable;

Relay station under step 805, target BS, when allowing to switch, uses X2 message (X2-AP:HO Request ACK) to return handoff response to target BS;

Step 806, target BS parse the information of X2-AP:HO Request ACK message, use S1 message (S1-AP:HO Request ACK) to return handoff response to MME;

Step 807, MME use S1 message (S1-AP:HO Command) to send switching command to source base station;

Step 808, source base station parse the information of S1-AP:HO Command message, use X2 message (X2-AP:HO Request ACK) i.e. handoff response to return to relay station the information of the S1 message parsed.

As shown in Figure 9, in an embodiment, switching target is the relay station under same serving BS, then the message treatment method in this example can comprise:

Step 901, source relay station use X2 message to send handover request to base station (eNB) (X2-AP:HO Request);

Step 902, base station parse the information of X2-AP:HO Request message, use S1 message to send this handover request to target relay station (S1-AP:HO Required); The precondition performing this step is optional, such as, can be that X2 interface is unavailable;

When step 903, object relay stand in and allow to switch, S1 message (S1-AP:HO Command) is used to return handoff response to base station;

Step 904, base station parse the information of S1-AP:HO Request ACK message, use X2 message (X2-AP:HO Request ACK) i.e. handoff response to return to source relay station the information of the S1 message parsed.

As shown in Figure 10, in an embodiment, switching target is the relay station under same serving BS, then the message treatment method in this example can comprise:

Step 1001, source relay station use S1 message to send handover request to base station (eNB) (S1-AP:HO Required);

Step 1002, base station parse the information of S1-AP:HO Required message, use X2 message to send this handover request to target relay station (X2-AP:HO Request); The precondition performing this step is optional, such as, can be that S1 interface is unavailable;

When step 1003, object relay stand in and allow to switch, X2 message (X2-AP:HOCommand) is used to return handoff response to base station;

Step 1004, base station parse the information of X2-AP:HO Request ACK message, use S1 message (S1-AP:HO Request ACK) i.e. handoff response to return to source relay station the information of the X2 message parsed.

The invention process also provides a kind of message treatment method, and the method can comprise: obtain the information sent by X2 message, sends first and retransmits notice, uses S1 interface to send described information to indicate; And/or, obtain the information sent by S1 message, send second and retransmit notice, use X2 interface to send described information to indicate, thus realize the flexible use of X2 interface and S1 interface, ensure the smooth transmission of message content, optimize signaling process.

During concrete enforcement, above-mentioned message treatment method can be implemented by the device that can realize its function, such as, implemented by the device such as base station, relay station.When being implemented by base station, there is information exchange between base station and relay station, base station shows to wish that relay station uses the interface resend message content of specifying to relay station.

During concrete enforcement, in above-mentioned message treatment method, the first use S1 interface retransmitting notice instruction sends information can have various ways, such as, can be the information using S1 interface to send X2 message, concrete, Ke Yishi: X2 message integrated carrying is resend to S1 message; The Information invariability of the message namely resend, but the information of this message need carry and resends to the message of another type, namely the message of this another type be the S1 message transmitted by S1 interface; Can also be: the information of the message resend changes to some extent, such as, the information of original X2 message be extracted, the process such as conversion, form the information of some new message, be fitted in S1 message and send.

Give an example, as shown in figure 11, in this example, message treatment method can comprise:

Step 1101, recipient receive the X2-AP (as HO Request) that transmit leg is sent;

Step 1102, receive direction transmit leg send the first repeating transmission notice instruction and use S1 interface to send message;

Step 1103, recipient receive the S1-AP (HO Required) that transmit leg is sent.

Similar, the second use X2 interface retransmitting notice instruction sends information also can have various ways, such as, can be the information using X2 interface to send S1 message, concrete, Ke Yishi: resend to X2 message by S1 message integrated carrying; The Information invariability of the message namely resend, but the information of this message need carry and resends to the message of another type, namely the message of this another type be the X2 message transmitted by X2 interface; Can also be: the information of the message resend changes to some extent, such as, the information of original S1 message be extracted, the process such as conversion, form the information of some new message, be fitted in X2 message and send.

Give an example, as shown in figure 12, in this example, message treatment method comprises:

Step 1201, recipient receive the S1-AP (as HO Request) that transmit leg is sent;

Step 1202, receive direction transmit leg send the second repeating transmission notice instruction and use X2 interface to send message;

Step 1203, recipient receive the X2-AP (HO Required) that transmit leg is sent.

In an embodiment, send first and retransmit notice, described first repeating transmission notice instruction uses S1 interface to send information can also a precondition, and this precondition can be: X2 interface is unavailable, and the X2 interface of such as base station and core-network side is unavailable.Then when obtain be the information sent with X2 message time, described first retransmits notice, and can also to be used to indicate X2 interface unavailable; Certainly, send the first repeating transmission notice during concrete enforcement to be also not limited under the disabled precondition of X2 interface.This precondition can be preset as required, such as, this precondition is preset as: switching target is another website (as base station, relay station etc.) having direct or indirect S1 interface to be connected with the serving BS of relay station.Especially, another base station having S1 interface with the serving BS of relay station as switched target, this S1 interface is indirect interface, and serving BS carries out S1 by an intermediate network node (as MME, base station, relay station etc.) or multiple network node with this destination node (website or the node such as relay station, relay station as under another base station, another base station) and is connected.And for example switching target is another relay station under serving BS, and so this S1 interface can be just direct S1 interface.Be no matter interface or the indirectly S1 interface of direct S1, if meet this precondition, then after this serving BS obtains X2 message, can send the first repeating transmission notice, instruction uses S1 interface to send information; And for example, this precondition is preset as: switching target is the relay station under another base station having S1 interface to be connected with the serving BS of relay station, if meet this precondition, then after this serving BS obtains X2 message, can send the first repeating transmission notice, instruction uses S1 interface to send information; In addition, also can not this precondition, as long as namely obtain X2 message, just send first and retransmit notice, instruction uses S1 interface to send information.

Similar, send second and retransmit notice, described second retransmits notice instruction uses X2 interface transmission information can also have a precondition, this precondition can be: S1 interface is unavailable, then when obtain be the information sent with S1 message time, described second retransmits notice, and can also to be used to indicate S1 interface unavailable; Certainly, send the second repeating transmission notice during concrete enforcement to be also not limited under the disabled precondition of S1 interface.This precondition can be preset as required, retransmits and notifies similar, repeat no more here with aforementioned transmission first.In addition, also can not this precondition, as long as namely obtain S1 message, just send second and retransmit notice, instruction uses X2 interface to send information.

In an embodiment, send first and retransmit notice, described first retransmits notice instruction uses S1 interface transmission information to have numerous embodiments, such as, first retransmits notice can be carried in the specific bit of an existing message, or described first repeating transmission notice can be carried in a self-defined message, give an example, can be embodied as: send and switch refuse information, be provided with particular value in described switching refuse information, described particular value instruction uses S1 interface to send information; That is, in switching refuse information with specific value, illustrates that suggestion relay station uses S1 interface transmission information, can certainly illustrate that the reason of refusal is that X2 interface is unavailable:

X2-AP：HANDOVER PREPARATION FAILURE message with anappropriate cause value

And for example can be embodied as: send a particular message, the instruction of this particular message uses S1 interface to send information (information as X2 message as described in comprising); Such as, this particular message can be S1X2_Reject message, illustrates that suggestion relay station uses S1 interface to send information, can certainly illustrate the reason of refusal be X2 interface unavailable (as base station and core-network side X2 interface unavailable).

Similar, send second and retransmit notice, described second repeating transmission notice instruction uses X2 interface to send information also can be had numerous embodiments, such as, can be embodied as: transmission switches refuse information, be provided with particular value in described switching refuse information, described particular value instruction uses X2 interface to send information; And for example can be embodied as: send a particular message, the instruction of this particular message uses X2 interface to send information.

As shown in FIG. 13A, the embodiment of the present invention also provides a kind of message treatment method, and the method can comprise:

Step 1301a, X2 interface between transmission and neighbor site whether can notice, to indicate when X2 interface is unavailable, use S1 interface to send information;

The information that step 1302a, reception use S1 interface to send.

As shown in Figure 13 B, the embodiment of the present invention also provides a kind of message treatment method, and the method can comprise:

Step 1301b, S1 interface between transmission and neighbor site whether can notice, to indicate when S1 interface is unavailable, use X2 interface to send information;

The information that step 1302b, reception use X2 interface to send.

Can be learnt by flow process shown in Figure 13 A, Figure 13 B, in the embodiment of the present invention, send X2 interface between neighbor site whether can notice, to indicate when X2 interface is unavailable, use S1 interface to send information; And/or, send S1 interface between neighbor site whether can notice, to indicate when S1 interface is unavailable, use X2 interface to send information, the flexible use of X2 interface and S1 interface can be realized, ensure the smooth transmission of message content, optimize signaling process.Can to give advance notice in a word the X2 interface applicable of base station and neighbor site, to avoid the X2 interface of base station and neighbor site cannot the used time, just notify that receiving node (as relay station) this X2 interface is unavailable, cause the situation that message repeats.

During concrete enforcement, above-mentioned message treatment method can be implemented by the device that can realize its function, such as, implemented by the device such as base station, relay station.Such as, when setting up X2 interface between relay station and base station, the interface message of mutual each self-supporting between base station and relay station, as base station tells that relay station oneself is supported have X2 interface to exist with which adjacent sites or do not support the X2 interface of which adjacent sites, such relay station would not initiate X2 HO, and directly initiate S1 HO, avoid failure handling, also save HO time delay.

Base station tells that relay station oneself is supported have X2 interface to exist with which adjacent sites or do not support the X2 interface of which adjacent sites, can have multiple specific measures for implementation, such as, can be:

One, a base station maintenance neighbor site (or community) list, contains in list outside neighbor site (or community) beacon information, further comprises the information whether the S1 interface of base station and this neighbor site and/or X2 interface can be used.This interface message can be indicate the S1 interface of base station and this neighbor site and/or X2 interface to use, and also can be that S1 interface and/or the X2 interface of instruction base station and this neighbor site is unavailable.

Two, a base station maintenance neighborhood list (neighbor relation table).

In order to make, network can configure LTE system automatically, Automatic Optimal, proposes requirement to the operation and maintenance of network, proposes Self-Organizing Network (self-configuring network, SON) thus.In SON, automatically set up neighborhood to be also necessary, neighborhood describes by a neighborhood list (neighbor relation table), such as can comprise home base stations (or home cell) beacon information particularly, target BS (or Target cell) beacon information, X2 interface information etc., handover information etc.Base station can by the some or all of message notice in this neighborhood list to relay station.

Above-mentionedly just list two kinds of possible implementing methods, but be not limited to this two kinds of ways.

Base station tells that relay station oneself is supported have X2 interface to exist with which adjacent sites or do not support the X2 interface of which adjacent sites, and can be periodically notify, also can be aperiodically notify.

The S1 of above-mentioned base station and other neighbor sites (as neighbor base stations) and/or X2 interface information can be obtain in the process set up at base station and other websites S1 and/or X2 interface with mutual, can also be obtained by other various ways, not limit at this.

In like manner the information of S1 interface also can by this list notification to RN.

And for example, base station and other websites are (as MME, gateway, base station, relay station etc.) between when setting up S1 interface, then base station can by interface message between oneself and other websites (as S1 interface and/or X2 interface, or other interface messages) tell relay station, for S1 interface, base station informs that relay station oneself and which website (as which neighbor base stations) have S1 interface (supporting the S1 interface of base station and this website in other words) or which adjacent base station not have S1 interface (not supporting the S1 interface of base station and this website in other words) with, thus the information that relay station can be informed by base station, S1 HO would not be initiated, and directly initiate X2 HO, avoid failure handling, also save HO time delay.

Interface message is obtained about relay station:

During concrete enforcement, relay station can obtain:

A) about interface (as S1 and/or the X2 interface) information of website corresponding to base station and neighbor site (as neighbor base stations, another relay station under serving BS, the relay station under neighbor base stations) or neighbor cell;

Especially, in terminal switching process, multiple candidate target websites of relay station and terminal are (as target BS, or target relay station) when carrying out information exchange, only be the use of a S1/X2 interface at Un mouth, then carry out information interaction by this S1/X2 interface and multiple candidate target website.Now base station is that relay station relays or transfer information communicate to the plurality of candidate target website.Now base station and each candidate target website have a corresponding S1 interface or X2 interface.

B) or/and about the interface message of this relay station and neighbor site.

Especially: relay station and the serving BS of oneself have S1 and X2 interface, relay station and other neighbor base stations also have S1 interface and/or X2 interface in addition.So now Un interface just has multiple S1 interface and/or multiple X2 interface (number is more than or equal to 1).Multiple S1 interfaces like this, multiple X2 interface, for have passed the serving BS of relay station, in fact can be referred to as logic interfacing instead of physical interface.

For above-mentioned two situations, particularly, the relay station under neighbor site is neighbor base stations, needs the relation information notice relay station by this target relay station and its serving BS; Or

For above-mentioned two situations, particularly, the relation information of neighbor site as neighbor base stations and its subordinate's relay station is informed to relay station.

How to identify about relay station and will initiate S1 message or X2 message:

To switch to example: in another embodiment, in handoff procedure (as the terminal switch of relaying subordinate, or the switching of mobile relay), relay station acquiescence is initiated X2 message and is switched, when receive that base station sends first retransmits notice, then initiate S1 message and switch.Or relay station acquiescence is initiated S1 message and switched, when receive that base station sends second retransmits notice, then initiate S1 message and switch.

Relay station is according to the interface message had about base station and neighbor site, or the interface message of this relay station and neighbor site, determines that initiating S1 message carries out switching or initiate X2 message switching.

Particularly, for X2 interface, relay station is learnt and is obtained base station and candidate target website (as neighbor base stations, relay station under neighbor base stations, or the X2 interface information of neighbours' relay station etc.) interface available information, relay station initiates X2 message to candidate target website, switches.

Described interface message how is safeguarded about relay station:

Alternatively, relay station will safeguard this base station and neighbor site (as neighbor base stations, relay station etc. under the relay station under neighbor base stations or same serving BS) interface (as S1 and/or X2 interface) information.Relay station irregularly or termly receives and safeguards this information.

A) can be that relay station initiatively initiates request, require that base station or neighbor site provide relevant information, or obtain this information by base station;

B) also can base station or neighbor site unsolicited;

C) above-mentioned two situations, particularly, such as, in the S1 and/or X2 interface process of establishing of relay station and base station, or relay station and being set up by base station and neighbor site is obtained in S1 and/or X2 interface process;

D) acquisition of this information can also be periodically.

During concrete enforcement, above-mentioned message treatment method can also comprise: the load instruction information sending neighbor site, carries out targeted sites switching selection to indicate according to described load instruction information.Such as, the load instruction information of neighbor site is told relay station by base station, allows relay station more reasonably select target website.Be exactly allow base station tell relay station load instruction information (load information) information in brief, such relay station just can select good target eNB, is also convenient to carry out corresponding flow control.

As shown in Figure 14 A, the embodiment of the present invention also provides a kind of message treatment method, and the method can comprise:

Step 1401a, X2 interface between reception and neighbor site whether can notice;

Step 1402a, when X2 interface is unavailable, S1 interface is used to send information.

As shown in Figure 14B, the embodiment of the present invention also provides a kind of message treatment method, and the method can comprise:

Step 1401b, S1 interface between reception and neighbor site whether can notice;

Step 1402b, when S1 interface is unavailable, use X2 interface send information.

Shown in Figure 14 A and Figure 14 B, flow process can be implemented separately, also can in conjunction with enforcement.

Can be learnt by flow process shown in Figure 14 A, Figure 14 B, in the embodiment of the present invention, receive X2 interface between neighbor site whether can notice, when X2 interface is unavailable, use S1 interface to send information; And/or, receive S1 interface between neighbor site whether can notice, when S1 interface is unavailable, uses X2 interface to send information, the flexible use of X2 interface and S1 interface can be realized, ensure the smooth transmission of message content, optimize signaling process.

For X2 interface, base station informs that relay station oneself and which website (as which neighbor base stations) have X2 interface (supporting the X2 interface of base station and this website in other words) or which adjacent base station not have X2 interface (not supporting the X2 interface of base station and this website in other words) with, thus the information that relay station can be informed by base station, X2 HO would not be initiated, and directly initiate S1 HO, avoid failure handling, also save HO time delay.

During concrete enforcement, when sent information is that above-mentioned message treatment method can also comprise to when switching relevant information: the load instruction information obtaining neighbor site; According to described load instruction information, carry out targeted sites and switch selection.Such as, relay station receives the load instruction information of neighbor site that base station sends, and according to those load instruction informations, relay station can more reasonably select target website, is also convenient to carry out corresponding flow control.

During concrete enforcement, receive X2 interface between neighbor site whether can notice can comprise: receives X2 interface between services sites and neighbor site whether can notice, or X2 interface between reception relay and neighbor site whether can notice;

Receive S1 interface between neighbor site whether can notice can comprise: receives S1 interface between services sites and neighbor site whether can notice, or S1 interface between reception relay and neighbor site whether can notice.

X2/S1 interface between that receive and neighbor site whether can notice can comprise a neighborhood list, described neighborhood list is used to indicate the X2/S1 interface message between neighbor site.

For the data retransmission (data forwarding) in handoff procedure, the embodiment of the present invention can be suitable for equally.Such as, in Un interface, in data forwarding process, relay station carries out data retransmission flow process by X2 interface, but in base station and core-network side, base station can according to the interface case of self and core-network side respective network elements (as target BS), or use X2 interface to carry out data retransmission flow process, or use S1 interface to carry out data retransmission flow process instead of X2 interface must be used to carry out data retransmission.Especially, relaying carries out data retransmission by X2 interface, and base station can use S1 interface to be communicated with target BS by MME, carries out data retransmission flow process.

In prior art, base station and a MME only have a S1 interface, and base station and another base station only have an X2 interface.Under junction network, between relay station and base station, only have a S1 interface and X2 interface.

The embodiment of the present invention is applicable to above-mentioned situation, especially, in terminal switching process, multiple candidate target websites of relay station and terminal are (as target BS, or target relay station) when carrying out information exchange, only be the use of a S1/X2 interface at Un mouth, then carry out information interaction by this S1/X2 interface and multiple candidate target website.Now base station is that relay station relays or transfer information communicate to the plurality of candidate target website.Now base station and each candidate target website have a corresponding S1 interface or X2 interface.

The situation of another possibility is: relay station and the serving BS of oneself have S1 and X2 interface, and relay station and other neighbor base stations also have S1 interface and/or X2 interface in addition.So now Un interface just has multiple S1 interface and/or multiple X2 interface (number is more than or equal to 1).Multiple S1 interfaces like this, multiple X2 interface, for have passed the serving BS of relay station, in fact can be referred to as logic interfacing instead of physical interface.The embodiment of the present invention is equally applicable to above-mentioned situation.

Whether whether above-mentioned base station and neighbor base stations have X2 interface or X2 interface can with representing current base station and target BS/targeted sites (or the community of target BS/targeted sites, i.e. Target cell) between, X2 interface whether is used to carry out related procedure, as whether use X2 interface with initiate base station and with target BS (or the community of target BS/targeted sites, i.e. Target cell) between flow process (initiateprocedures towards the eNB parenting the target cell).Particularly, whether whether above-mentioned base station and neighbor base stations have X2 interface or X2 interface can with representing: whether base station and neighbor base stations can use X2 interface to carry out X2 switching, namely whether base station can carry out X2 and switch related procedure between base station and target BS/targeted sites (or the community of target BS/targeted sites, i.e. Target cell).

Described base station can by the some or all of message notice in above-mentioned neighborhood list to relay station.Particularly, in all embodiments, base station can tell which adjacent sites relay station oneself is supported have X2 interface existence or do not support the X2 interface of which adjacent sites.

The situation of a neighborhood list (NRT, neighbor relation table) for base station maintenance, for each community of base station, base station all can maintain (keep) NRT.For each neighborhood, Target cell ID (TCI is contained in neighbor list, Target Cell Identifier), for E-UTRAN system, TCI correspond to ECGI and PCI (Physical Cell Identifier) of Target cell.Each neighborhood by 3 content representation, can comprise NORemove, NoHO and NoX2 item (attribute).Particularly, No HO: detect (check) to this if represented, neighbor cell relation can not be used for switching (handover reasons) by base station.No X2: detect (check) to this if represented, neighborhood can not use an X2 interface to initiate the flow process (initiate procedures towards the eNB parenting the target cell) between regarding base station and Target cell.Neighbour cellRelations: represent neighbor cell relation be community to the relation between community, and X2 interface (link) is between two base stations.

Lift an instantiation below again and above-mentioned message treatment method is described, as shown in figure 15, handling process can comprise:

Step 1501, subscriber equipment (UE) send measurement report message (Measurementreport) to relay station (RN);

Step 1502, relay station, after the measurement report of the UE received, are determined to initiate handover request based on measurement report and wireless resource management information; Relay station uses X2 message to send handover request to source base station (Source eNB) (X2-AP:HO Request);

Step 1503, source base station parse the information of X2-AP:HO Request message, use S1 message to send S1 handover request message (S1-AP:HO Required) to mobile management entity (MME); The precondition performing this step is optional, such as, can be that X2 interface is unavailable;

Step 1504, MME use S1 message (S1-AP:HO Request) to send this handover request to target BS (Target eNB);

Step 1505, target BS, when allowing to switch, use S1 message (S1-AP:HO RequestACK) to return handoff response to MME;

Step 1506, MME use S1 message (S1-AP:HO Command) to send switching command to source base station;

Step 1507, source base station parse the information of S1-AP:HO Command message, use X2 message (X2-AP:HO Request ACK) i.e. handoff response to return to relay station the information of the S1 message parsed;

Step 1508, relay station send switching command-RRC to subscriber equipment and link reconfiguration message.(RRCConn.Reconf.)

Step 1509, relay station use the X2 message state that transmits Sequence Number to transmit message (X2-AP:SNstatus transfer) to source base station;

Step 1510, source base station parse the information of X2-AP:SN status transfer message, use S1 message to send base station state and transmit message (S1-AP:eNB status transfer) to mobile management entity; The precondition performing this step is optional, such as, can be that X2 interface is unavailable;

Step 1511, MME use S1 message (S1-AP:MME status transfer) to send MME state and transmit message to target BS;

Step 1512a-c, relay station use X2 interface data to source base station; Source base station uses S1 interface to transmit data to gateway; Gateway uses S1 interface to transmit data to target BS; A kind of possible enforcement is also had to be that relay station uses X2 interface directly data to be sent to target BS (Data forwarding);

Step 1513, UE perform synchronizing process, and synchronous (Synchronisation) is to target BS;

Step 1514, UE are successfully linked into target BS, and the switching of having reshuffled (RRC Connnection reconfiguration complete) this terminal of message authentication to target BS transmission RRC link completes.

Step 1515, target BS use S1 message to send switching notice (S1-AP:HandoverNotify) to MME;

Step 1516, target BS use S1 message to select request (S1-AP:Path switch request) to MME transmit path;

Step 1517, MME send user face update request message (User plane updateREQ) to gateway (GW); The connection of notification service gateway customer plane needs to be switched to target BS from source base station;

Step 1518, user plane switch downlink path to target side, and GW returns to user face to MME and upgrades acknowledge message (User plane update RSP);

Step 1519, MME use S1 message to target BS transmit path Response to selection (S1-AP:Path switch request ACK);

Step 1520, MME use S1 message to send customer equipment context release command (S1-AP:UE context Release Command) to source base station; Source services sites switching for notifying user equipment terminal completes, can discharge the resource relevant with subscriber equipment terminal and information;

Step 1521, source base station parse the content of S1-AP:UE context Release Command, use X2 message to send customer equipment context release command to relay station (X2-AP:UE contextRelease Command);

Step 1522, in the relay station release resource relevant with terminal and information; Source base station uses S1 message to discharge (S1-AP:UE context Release Complete) to MME feedback user device context.

In this example, the carrying of the information of the X2 message of acquisition is sent to S1 message, such as in LTE handoff procedure, it is mutual and complete switching flow that base station and target BS complete handover information by X2 interface, and the concrete X2 of use message sends Handover Request message and Handover Request ACK message.

Base station and target BS are by S1 interface, and it is mutual and complete switching flow to complete handover information by MME, employs S1 message Handover Requried particularly, Handover Request, Handover Request ACK, Handover command message.

Therefore switching flow can be completed by S1 and X2 message, wherein all contain the information interaction required for switching in message, different is exactly that S1 with X2 sign used separately is different in essence, because base station is not directly communicate with target BS, but communicated with target BS by MME, therefore (MME UE S1AP ID is comprised as S1 message employs S1 AP ID, eNB UE S1AP ID), X2 then employs an X2AP ID (comprising old eNB X2AP ID, New eNB X2AP ID).

In addition because the information of each message that RN sends is resolved in base station, therefore base station can obtain the information of each X2 message.Therefore a lot of extraneous informations is provided for using S1 message to send X2 message, such as base station (can comprise MME UE S1AP ID for the S1 message arrangement S1AP ID of this correspondence, eNBUE S1AP ID, this IDs can be base station configuration, also can be MME configuration, or base station and MME consult to obtain).Direct forwarding path availability base station is also the acquisition that can judge voluntarily.

Although the name of each is all not necessarily the same in X2 with S1 message, always from the particular content of X2 message item, information can be obtained, this information can be corresponded in S1 message.As the target ID in S1 message HO required message, just correspond to the target cell ID in X2 message.

Lift an instantiation below again and above-mentioned message treatment method is described, as shown in figure 16, handling process can comprise:

Step 1601, subscriber equipment (UE) send measurement report (Measurementreport) to relay station (RN);

Step 1602, relay station, after the measurement report of the UE received, are determined to initiate handover request based on measurement report and wireless resource management information; Relay station uses S1 message to send handover request to source base station (Source eNB) (S1-AP:HO Required);

Step 1603, source base station parse the information of S1-AP:HO Required message, use X2 message to send this handover request to target BS (X2-AP:HO Request); The precondition performing this step is optional, such as, can be that S1 interface is unavailable;

Step 1604, target BS, when allowing to switch, use X2 message (X2-AP:HO Command) to send switching command to source base station;

Step 1605, source base station parse the information of X2-AP:HO Command message, use S1 message (S1-AP:HO Request ACK) i.e. handoff response to return to relay station the information of the X2 message parsed;

Step 1606, relay station send switching command-RRC link to subscriber equipment and reshuffle (RRCConn.Reconf.);

Step 1607, relay station use the S1 message state that transmits Sequence Number to transmit message to source base station (S1-AP:SN status transfer);

Step 1608, source base station parse the information of S1-AP:SN status transfer message, use X2 message to send base station state and transmit message (X2-AP:eNB status transfer) to target BS; The precondition performing this step is optional, such as, can be that S1 interface is unavailable;

Step 1609a-b, relay station use S1 interface to transmit data to source base station; Source base station uses X2 interface to transmit data to target BS (Data forwarding); Also have a kind of possible situation to be that relay station uses S1 interface to transmit data to source base station, source base station uses S1 interface to transmit data to gateway, and gateway re-uses S1 interface and transmits data to target BS;

Step 1610, UE perform synchronizing process, and synchronous (Synchronisation) is to target BS;

Step 1611, UE are successfully linked into target BS, and the switching of having reshuffled (RRC Connnection reconfiguration complete) this terminal of message authentication to target BS transmission RRC link completes.

Step 1612, target BS and gateway (GW) carry out path change flow process, and the data of terminating gateway are sent to target BS instead of source serving BS thus;

Step 1613, target BS use X2 message to send customer equipment context release command (X2-AP:UE context Release Command) to source base station; Source services sites switching for notifying user equipment terminal completes, can discharge the resource relevant with subscriber equipment terminal and information;

Step 1614, source base station parse the information of X2-AP:UE context Release Command, use S1 message to send customer equipment context release command to relay station (S1-AP:UE contextRelease Command);

Step 1615, the relay station release resource relevant with subscriber equipment terminal and information, feedback user device context has discharged (S1-AP:UE context Release Complete) to source base station.

One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a computer read/write memory medium, this program is when performing, can comprise all or part of step in above-described embodiment method, described storage medium can comprise: ROM, RAM, disk, CD etc.

A kind of message processing apparatus is additionally provided, as described in the following examples in the embodiment of the present invention.The principle of dealing with problems due to these devices, system is similar to message treatment method, and therefore the enforcement of these devices, system see the enforcement of method, can repeat part and repeat no more.

As shown in figure 17, provide a kind of message processing apparatus in the embodiment of the present invention, this device can comprise:

First receiver module 1701a, for receiving X2 message to obtain the information of X2 message;

First processing module 1702a, for the information using S1 message to send described X2 message;

And/or this device comprises:

Second receiver module 1701b, for receiving S1 message to obtain the information of S1 message;

Second processing module 1702b, for the information using X2 message to send described S1 message.

In an embodiment, the first processing module 1702a can be specifically for: send resolving the information carrying obtained from X2 message to S1 message; Second processing module 1702b can be specifically for: send resolving the information carrying obtained from S1 message to X2 message.

In an embodiment, the first processing module 1702a can be specifically for: described X2 message entirety be included in described S1 message and send; Second processing module 1702b can be specifically for: described S1 message entirety be included in described X2 message and send.

In an embodiment, described X2 message or S1 message are for initiating handover request.

As shown in figure 18, also provide a kind of message processing apparatus in the embodiment of the present invention, this device can comprise:

First acquisition module 1801a, for obtaining the information sent by X2 message;

First processing module 1802a, for sending the first repeating transmission notice, uses S1 interface to send described information to indicate;

And/or this device comprises:

Second acquisition module 1801b, for obtaining the information sent by S1 message;

Second processing module 1802b, for sending the second repeating transmission notice, uses X2 interface to send described information to indicate.

In an embodiment, when obtain be the information sent with X2 message time, described first retransmits notice, and to be also used to indicate X2 interface unavailable; When obtain be the information sent with S1 message time, described second retransmits notice, and to be also used to indicate S1 interface unavailable.

In an embodiment, described first retransmits notice is carried in the specific bit of an existing message, or described first repeating transmission notice is carried in a self-defined message;

Described second retransmits notice is carried in the specific bit of an existing message, or described first repeating transmission notice is carried in a self-defined message.

As shown in figure 19, the embodiment of the present invention also provides a kind of message processing apparatus, and this device can comprise:

First receiver module 1901a, for receive X2 interface between neighbor site whether can notice;

First sending module 1902a, for when X2 interface is unavailable, uses S1 interface to send information;

And/or,

Second receiver module 1901b, for receive S1 interface between neighbor site whether can notice;

Second sending module 1902b, for when S1 interface is unavailable, uses X2 interface to send information.

As shown in figure 20, in an embodiment, when the information that the first sending module 1902a or the second sending module 1902b sends is that the message processing apparatus shown in Figure 19 can also comprise to when switching relevant information:

Acquisition module 2001, for obtaining the load instruction information of neighbor site;

3rd sending module 2002, for according to described load instruction information, carries out targeted sites and switches selection.

In an embodiment, X2 interface between described reception and neighbor site whether can notice comprise: receive X2 interface between services sites and neighbor site whether can notice, or receive X2 interface between relay and neighbor site whether can notice;

S1 interface between described reception and neighbor site whether can notice comprise: receive S1 interface between services sites and neighbor site whether can notice, or receive S1 interface between relay and neighbor site whether can notice.

The various method flows of embodiment before device described in the present embodiment can perform, described device can be specifically the service node in network, includes but not limited to base station or relay station.

In an embodiment, described in receive and X2/S1 interface between neighbor site whether can notice be a neighborhood list, described neighborhood list is used to indicate the X2/S1 interface message between neighbor site.

In the embodiment of the present invention, receive X2 message to obtain the information of X2 message, use S1 message to send the information of described X2 message; And/or, receive S1 message to obtain the information of S1 message, use X2 message to send the information of described S1 message, thus realize the flexible use of X2 interface and S1 interface, ensure the smooth transmission of message content, optimize signaling process;

In the embodiment of the present invention, obtain the information sent by X2 message, send first and retransmit notice, use S1 interface to send described information to indicate; And/or, obtain the information sent by S1 message, send second and retransmit notice, use X2 interface to send described information to indicate, thus realize the flexible use of X2 interface and S1 interface, ensure the smooth transmission of message content, optimize signaling process;

In the embodiment of the present invention, receive X2 interface between neighbor site whether can notice, when X2 interface is unavailable, use S1 interface to send information; And/or, receive S1 interface between neighbor site whether can notice, when S1 interface is unavailable, uses X2 interface to send information, thus realize the flexible use of X2 interface and S1 interface, ensure the smooth transmission of message content, optimize signaling process.

In the X2 interface Establishing process or base station configuration updating flow process of LTE system, neighbor cell message corresponding to the cell information of base station and base station cell in message, can be carried.

Particularly, in X2 interface Establishing process, base station is carried by X2 interface foundation request X2 SETUPREQUEST or X2 interface foundation reply X2 SETUP RESPONSE and is linked the initial information of (association) to neighbor base stations for TNL (Transport Network Layer, transport network layer).In this message (X2 interface set up request X2 SETUP REQUEST or X2 interface set up reply X2 SETUP RESPONSE), contain neighbor cell message corresponding to the cell information (Served CellInformation) of base station and base station cell.May there be multiple community a base station, so comprises the information of all communities, base station in Served Cell Information.For each community of base station, this message (X2 interface sets up request X2 SETUP REQUEST or X2 interface sets up reply X2 SETUP RESPONSE) also comprises the neighbor site cell information (Neighbor Information) of each community, this base station.A Cell ID (cell ID) is comprised, i.e. ECGI (E-UTRAN Cell Global Identifier) in the cell information of base station.ECGI is made up of PLMN Identity (public land mobile net mark) and E-UTRAN Cell Identifier (evolved universal terrestrial radio access network cell ID).E-UTRAN Cell Identifier totally 28 bits are Base Station Identification (Global eNB ID) comprising leftmost 20 bits.X2 interface is set up and be further comprises a parameter in request X2 SETUP REQUEST or X2 interface foundation reply X2 SETUP RESPONSE message is that base station indicates (Global eNB ID), and this base station is labeled with 20 bits.This base station indicates and also just correspond to Base Station Identification in the ECGI of above-mentioned base station cell.Can know that this community belongs to the community below which PLMN and which base station by ECGI so thus.Therefore neighbor site can obtain the ECGI of each base station cell from the cell information of base station.In the ECGI of all communities of a base station, base station IDs (20 bit) is the same, only has other 8 bits can be different so that identify different communities.Similarly, the neighbor site cell information (Neighbor Information) that each base station cell is corresponding also contains the ECGI of neighbor site community.

In base station configuration updating (ENB CONFIGURATION UPDATE) flow process, base station sends base station configuration updating (ENB CONFIGURATION UPDATE) message can to base station, opposite end, links (association) lastest imformation for providing TNL (Transport Network Layer).Neighbor cell message corresponding to the cell information of base station and base station cell is comprised in this information.May there be multiple community base station, so just contains all cell informations in base station in Served Cell Information information.Each community of respective base station, this information also can comprise the neighbor site cell information (Neighbor Information) of described each community.Afterwards, after base station, opposite end receives base station configuration updating (ENBCONFIGURATION UPDATE) message, reply config update and confirm (ENBCONFIGURATION UPDATE ACKNOWLEDGE) message.

Under junction network, from the angle of terminal, relay station is just equivalent to a base station.On Un interface between relay station and base station, relay station, as a website, can carry out X2 interface process of establishing or base station configuration updating process etc. with base station.

As shown in figure 21, the serving BS of relay station 210 is base stations 211, and the neighbor base stations of base station 211 is base station 212, base station 213 and base station 214.Wherein all there is X2 interface between base station 211 and 212, between base station 211 and 213, between base station 211 and base station 214, there is no X2 interface.Community corresponding to neighbor base stations 212 is community 2, and the community corresponding to neighbor base stations 213 is community 3, and the community corresponding to neighbor base stations 214 is community 4.The serving BS 211 of relay station 210 has 2 communities, comprises community 1a and community 1b.

In terminal switching process under relay station 210, allow relay station 210 know whether to have X2 interface between base station 211 and other neighbor base stations to reach, so that relay station 210 can determine that initiating X2 switches or S1 switching flow, can perform in X2 interface Establishing process or base station configuration updating flow process and realize between Un interface.Particularly, the serving BS 211 of relay station 210 is had the neighbor base stations 212 of X2 interface, cell information corresponding to base station 213 as the cell information of base station 211, is placed in cell information list.

A kind of cell information of base station that Figure 22 a provides for the embodiment of the present invention and the schematic diagram of neighbor cell message.Figure 22 a comprises base station cell list and neighbor cell lists, stores the cell information of base station in the list of base station cell, stores the neighbor cell message of base station cell in neighbor cell lists.Wherein, the community of base station 211 comprises community 1a and 1b; The neighbor cell that community 1a is corresponding is the community 2 of neighbor base stations 212 and the community 3 of neighbor base stations 213 correspondence; The neighbor cell that community 1b is corresponding is the community 4 of neighbor base stations 214.

In the present embodiment, base station 211 can to relay station 210 send X2 interface between base station 211 and neighbor site whether can notice, certain neighbor cell can be shown as the community of base station by this notice, can use to indicate the X2 interface between base station corresponding to this neighbor cell and base station 211 to relay station 210.Or, certain neighbor cell can be shown as the community of base station, unavailable with the X2 interface between the base station indicating this neighbor cell corresponding to relay station 210 and base station 211.

Thus, the cell information of another kind of base station that provides for the embodiment of the present invention of Figure 22 b and the schematic diagram of neighbor cell message.On the basis of Figure 22 a, in described cell information, neighbor cell 2 and 3 is shown as the community of base station 211, that is: neighbor cell 2 and 3 has been put in the cell information list of base station.Community 2 and 3 is neighbor cells, but is placed into base station cell list, thus to X2 interface between the base station 212 or 213 and base station 211 of receiving terminal indicating cell 2 or 3 correspondence can with or unavailable.

In one case, be added into base station corresponding to the neighbor cell of base station cell list and current base station 211 interface is set as unavailable, receiving terminal (relay station 210) can be judged according to Figure 22 b, base station 212,213 and base station 211 interface of this 2 neighbor cells 2,3 correspondence are unavailable, and neighbor cell 4 does not add base station cell list, then the X2 interface between base station 214 and base station 211 can be used.

In another case, be added into base station corresponding to the neighbor cell of base station cell list and current base station 211 interface is set as available, and the disabled neighbor base stations community of X2 interface can not be added into base station cell list.Relay station 210 can be judged according to Figure 22 b, base station 212,213 and base station 211 interface of 2 neighbor cell 2,3 correspondences are available, and do not add between the base station 214 corresponding to neighbor cell 4 of base station cell list and base station 211 and do not have available X2 interface.

In Figure 22 a, be empty with community 2,3 corresponding neighbor cell messages, but be appreciated that if the neighbor cell message of community 2,3 correspondence is not implemented for sky does not affect the present embodiment yet.Such as, because neighbor cell 2 is neighbor cells of base station cell 1a, then the neighbor cell message of the correspondence of neighbor cell 2 can be community 1a, as shown in Figure 22 c.In like manner, the neighbor cell message of the correspondence of neighbor cell 3 can be community 1b, and the present embodiment does not limit as a kind of.

Because relay station can know that the base station of its serving BS indicates, also the ECGI of each community, base station can be obtained by the cell information of base station (Served Cell Information), can distinguish which community is thus real community, base station, and which community is not.Namely by ECGI, relay station can know community 1a, and community 1b is the real community of base station, and community 2 and 3 is not the real community of base station.By this relation, relay station can know that being placed on community 2 and 3 is the neighbor cells having X2 interface with serving BS 1, and neighbor cell is in addition all the neighbor cell not having X2 interface with serving BS 1.

By with such scheme, relay station can be known and between its serving BS and neighbor base stations, whether can use X2 interface, relay station based on this information, in terminal switch flow process, can be initiated or carry out X2 communication (as initiated or carrying out X2 switching flow thus.Such as utilize again X2 interface to initiate X2 handover request message, initiate X2 switching flow).It is emphasized that, above scheme for be X2 interface whether can situation, described method is applicable to following scene equally: whether the S1 interface namely between itself and adjacent base station of base station notice relay station can be used, so that relay station determines whether to initiate or carry out S1 communication (as initiated or carrying out S1 switching flow.Such as utilize again S1 interface to initiate S1 handover request message, initiate S1 switching flow).Base station notice relay station its with the S1 interface between adjacent base station whether can process and notice X2 interface whether can situation identical, the present embodiment does not do repeated description.

Whether available whether above-mentioned base station and neighbor base stations have X2 interface or can represent whether base station and neighbor base stations can use X2 interface to carry out X2 switching.

In like manner, the above-mentioned situation about X2 interface is all applicable to S1 interface.Whether available whether above-mentioned base station and neighbor base stations have S1 interface or can represent whether base station and neighbor base stations can use S1 interface to carry out S1 switching.

With described method correspondingly, in the message processing apparatus shown in Figure 19, described first receiver module 1901a comprises: the first extraction unit, for knowing the neighbor cell being identified as services sites community according to described notice; Described device also can comprise further: determination module, unavailable or the neighbor site corresponding to the neighbor cell being identified as services sites community is defined as X2 interface can uses for the neighbor site corresponding to the neighbor cell being identified as services sites community being defined as X2 interface, the result determined is notified the first sending module.Figure 19 shown device can specifically be positioned at a relay station, can be used for receiving the notice from base station, and determines whether to communicate by no initiation X2, namely whether adopts X2 interface communication.

The schematic diagram of a kind of message processing apparatus that Figure 23 provides for the embodiment of the present invention, this device can comprise: notice generation module 231 and notice sending module 232;

Described notice generation module 231, for generating a notice, and in this notice by the X2 interface between services sites can neighbor site corresponding to cell ID be services sites community; Described notice sending module 232, for sending this notice to described services sites subordinate relay station, can use to indicate the X2 interface between this services sites and neighbor site; Or

Cell ID corresponding to disabled for X2 interface between services sites neighbor site for generating a notice, and is services sites community by described notice generation module 231 in this notice; Described notice sending module 232, for sending this notice, to indicate the X2 interface between this services sites and neighbor site unavailable to described services sites subordinate relay station.

Device described in the present embodiment can be positioned at a base station equipment, for provide to relay station X2 interface whether can notice, be convenient to relay station and select accordingly whether to adopt X2 interface to communicate.The present embodiment is equally applicable to determine whether S1 interface can be used, and adopts the situation of S1 interface communication, and the present embodiment is as limiting.

It should be noted that, in above all embodiments, the X2 interface between services sites and another website is unavailable comprises two kinds of situations:

(1), between described services sites and another website there is no X2 interface, or the X2 interface between described services sites and another website can not use;

(2) X2 interface, between described services sites and another website can use, but services sites is determined not use this X2 interface.Particularly, services sites can determine not use the X2 interface between itself and another website to carry out X2 switching.

All kinds of situations described in the present embodiment should not be considered to be limitation of the present invention.

Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

One of ordinary skill in the art will appreciate that all or part of flow process in said method embodiment, instruction related hardware can be carried out by computer program to complete, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.

Claims

1. a message treatment method, is characterized in that, the method comprises:

Services sites generates a notice, and is services sites community by the cell ID corresponding to disabled for the X2 interface between services sites neighbor site in this notice;

Services sites sends this notice to described services sites subordinate relay station, can not use to indicate the X2 interface between this services sites and neighbor site;

Described relay station receives described notice, is defined as using by the X2 interface between the neighbor site corresponding to the neighbor cell being identified as services sites community and services sites, and when described X2 interface is unavailable, uses S1 interface to send information.

2. the method for claim 1, is characterized in that, when sent information is to when switching relevant information, also comprises:

Relay station obtains the load instruction information of neighbor site;

Relay station, according to described load instruction information, carries out the selection switching targeted sites.

3. a communication system, is characterized in that, this communication system comprises: services sites and relay station;

Described services sites comprises: notice generation module, for generating a notice, and is services sites community by the cell ID corresponding to disabled for the X2 interface between services sites neighbor site in this notice; And notice sending module, for sending this notice to described services sites subordinate relay station, can not use to indicate the X2 interface between this services sites and neighbor site;

Described relay station comprises:

First receiver module, for receiving described notice; Wherein said first receiver module comprises: the first extraction unit, for knowing the neighbor cell being identified as services sites community according to described notice;

Determination module, for being defined as using by the X2 interface between the neighbor site corresponding to the neighbor cell being identified as services sites community and services sites, notifies the first sending module by the result determined;

First sending module, for when described X2 interface is unavailable, uses S1 interface to send information.

4. communication system as claimed in claim 3, is characterized in that, when the information that the first sending module sends is that described relay station also comprises to when switching relevant information:

Acquisition module, for obtaining the load instruction information of neighbor site;

3rd sending module, for according to described load instruction information, carries out the selection switching targeted sites.