CN102196480B

CN102196480B - Message processing method and device

Info

Publication number: CN102196480B
Application number: CN201110077975.0A
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: 2013-12-18
Anticipated expiration: 2030-04-30
Also published as: CN102196480A

Abstract

The embodiment of the invention discloses a message processing method and a message processing device, which belong to the technical field of communication. The method comprises the following steps of: receiving a notice indicating that whether an X2 interface between two neighbor sites is available or not, and transmitting information by using an S1 interface if the X2 interface is unavailable. By the technical scheme, the communication can be ensured to be normally performed, and the failing probability of the communication can be reduced.

Description

Message treatment method, device

It is the priority that PCT/CN2009/074338, denomination of invention are the PCT patent application of " message treatment method, device " that the application requires to submit Patent Office of the People's Republic of China, application number on September 30th, 2009, and its full content is by reference in conjunction with in this application.

Technical field

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

Background technology

ITU-R(Radiocommunication Sector of ITU in 2006, International Telecommunications Union's radio communication group) formally by B3G(BeyondThirdGenerationin mobile communication system, super 3 g mobile communication system, claim again the 4th third-generation mobile communication) technology called after IMT-Advanced(IMT-Advanced) technology.The IMT-Advanced Technology Need is realized higher data rate and larger power system capacity, target peak speed is: low speed moves, 1Gbps(Gigabits per second under the focus covering scene) more than, 100Mbps(MBPS under high-speed mobile, wide area covering scene).

Each current 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 characterictic of part IMT-Advanced, 3GPP prepares LTE further to be evolved to LTE-A(LTE-Advanced, senior Long Term Evolution) technology.

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

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

In the 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 relaying;

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

X2 interface: the interface between base station.

In the LTE wireless network, UE(User Equipment, subscriber equipment) business is mapped to DRB(Data Radio Bearer, Data Radio Bearer at the Uu interface), eNB(eNodeB, base station) DRB under can identification data also carries out respective handling to data.In the LTE-A junction network, relay station, Type-1relays for example, by the base station access network network.Relay station is supported LTE UE, and at LTE UE, relay station is consistent with LTE eNB on function.

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

Below, with in the 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), may only revise the S1AP UE ID(subscriber equipment S1 Application Protocol sign of this S1 message), other parts do not change, thereby forward this S1 handover request message (S1AP:HO required message) to MME, carry out corresponding S1 switching flow.S1-AP or S1AP mean S1Application Protocol(S1 application protocol herein).

Perhaps similarly, base station receives the RRC message of having carried this S1 handover request message content, after base station parses this S1 message, will initiate corresponding S1 switching flow in core-network side.In like manner, for X2 message, as base station receives the RRC message of having carried this X2 handover request message content, after base station parses this X2 message, will initiate corresponding X2 switching flow in core-network side.

The inventor, in realizing process of the present invention, finds that at least there is following deficiency in prior art:

X2 interface and S1 interface are used dumb, and message content can not be transmitted smoothly, and signaling process is comparatively cumbersome.For example, in the subscriber equipment handoff procedure, at the Un interface, when relay station sends X2 message to source base station, source base station will correspondingly be used X2 message to send information to target BS.If now the X2 interface between source base station and target BS is unavailable, so, source base station can only be by the handover request of corresponding X2 message refusal relay station.If relay station is used X2 message to initiate handover request all the time, and the X2 interface between source base station and target BS is always unavailable, source base station will be refused switching always so.And relay station does not know that this handoff failure causes because X2 interface is unavailable yet.While under relay station, a plurality of UE being arranged especially, the scene that different UEs all experiences this kind " X2HO(HandOver, switching) failure " may repeat.At the 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 guarantee communication, normally carries out.

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

Receive the whether available notice of X2 interface between services sites and neighbor site, the whether available notice of the X2 interface between described services sites and neighbor site comprises: the neighbor cell that is identified as the services sites community;

X2 interface between the corresponding neighbor site of the neighbor cell that is identified as the services sites community and services sites is defined as using or is used to carry out the X2 switching;

When the X2 interface between services sites and neighbor site is unavailable, use the S1 interface to send information.

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

The first receiver module, for receiving the whether available notice of X2 interface between services sites and neighbor site; Described the first receiver module comprises: the first extraction unit, for know the neighbor cell that is identified as the services sites community according to described notice;

Determination module, be defined as using or be used to carry out the X2 switching for the X2 interface between the corresponding neighbor site of the neighbor cell that will be identified as the services sites community and services sites, by definite result, notifies the first sending module;

The first sending module, when unavailable for the X2 interface between services sites and neighbor site, used the S1 interface to send information.

According to the description to technique scheme, whether the embodiment of the present invention has the following advantages: available by X2 interface or S1 interface between relay station notice and neighbor site, make relay station can select correct interface communication, guarantee to communicate by letter and normally carry out, reduce the possibility that communication failure occurs.

The accompanying drawing explanation

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

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

Another concrete implementing procedure figure that Fig. 2 is 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 in the embodiment of the present invention, the switching target is the relay station under another base station that has the S1 interface to be connected with the serving BS of relay station, the instantiation flow chart of message treatment method;

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

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

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

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

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

The process chart that Figure 13 A is another message treatment method in the embodiment of the present invention;

The process chart that Figure 13 B is another message treatment method in the embodiment of the present invention;

The process chart that Figure 14 A is another message treatment method in the embodiment of the present invention;

The process chart that Figure 14 B is another message treatment method in the embodiment of the present invention;

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

Figure 16 is the concrete enforcement schematic diagram of message treatment method under another handoff scenario in the embodiment of the present invention;

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

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

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

The structural representation that Figure 20 is 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;

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

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

The cell information of a kind 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 the purpose, technical scheme and the advantage that make the embodiment of the present invention is clearer, 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, 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, thereby realize the flexible use of X2 interface and S1 interface, guarantee the smooth transmission of message content, optimize signaling process.In embodiments of the present invention, described S1 message/X2 message is S1 signaling/X2 signaling namely, and the information page in described S1 message/X2 message is exactly the content that will pass on by corresponding message.

As shown in Figure 1, while 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, use S1 message to send the information of X2 message, can realize the flexible use of X2 interface and S1 interface, guarantee 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, can use S1 message to send corresponding contents.

As shown in Figure 2, while 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, use X2 message to send the information of S1 message, can realize the flexible use of X2 interface and S1 interface, guarantee 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, can use X2 message to send corresponding contents.

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

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

During concrete enforcement, the described X2 message received, can be carried on RRC(Radio Resource Control, radio resource control) in message, for example this X2 message is done in the as a whole RRC of being included in message, after the recipient resolves this RRC message, just can directly obtain a complete X2 message; Certainly, this X2 message also can be carried in other message.In addition, the described X2 message received, can be exactly also an independent X2 message.What the recipient received is exactly a complete X2 message.

In like manner for S1 message, same situation is also arranged.The described S1 message received, can be carried in RRC message, for example in RRC message, this S1 message done in the as a whole RRC of being included in message, after the recipient resolves this RRC message, just can directly obtain a complete S1 message; Certainly, this S1 message also can be carried in other message.In addition, the described S1 message received, can be exactly also an independent S1 message.What the 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 that obtains X2 message, for example, directly receives X2 message, and the X2 message that parsing receives is to obtain the information of X2 message; And for example, first receive and carried the RRC message of X2 message, then resolve described RRC message of carrying X2 message, thereby obtain X2 message, further resolve the X2 message of acquisition to obtain the information of X2 message.Certainly, receiving S1 message also can have multiple implementation with the information that obtains S1 message, for example, directly receives S1 message, resolves the S1 message of reception to obtain the information of S1 message; And for example, first receive the RRC message of carrying S1 message, then resolve the RRC message of described carrying S1 message, thereby obtain S1 message, further resolve the S1 message of acquisition to obtain the information of S1 message.

Lift an example, suppose to carry out above-mentioned message treatment method by base station, S1 message or X2 message that the Un interface is used, can be after relay station receives the message that subscriber equipment sends, and the message that need to receive thus sends the S1 message of carrying corresponding information or X2 message to core net; Can be also relay station due to situation that self reason produces S1 message or X2 message and sends, for example, in the mobile relay situation, mobile relay is initiated handover request to base station, for the switching of self, for example use especially S1 message/X2 to carry former RRC message-measurement reporting message.

In a word, S1 message or the X2 message for the Un interface, used, during concrete enforcement, S1 message or X2 message that relay station sends can be carried on other message, as in RRC message, sent to base station, resolve RRC message by base station, obtain S1 message or the X2 message of RRC message bearing, thereby transmit in base station and core net.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 of using S1 message to send X2 message can have multiple implementation, for example: will from X2 message, resolve the information obtained and carry to S1 message and send; Certainly, to from X2 message, resolve the information obtained carries to sending and also multiple implementation can be arranged in S1 message, for example: X2 message integral body is included in S1 message and sends,, carry when sending in S1 message will from X2 message, resolve the information obtained, original X2 message does not change, and directly is packaged in S1 message and sends; Perhaps, while specifically implementing, also can carry out some modification to X2 message, then carry to S1 message and send, such as carrying out some stylistic modifications, or will re-assembly to S1 message after the partition of the information of original X2 message.

Similarly, the information of using X2 message to send S1 message also can have multiple implementation, for example: will from S1 message, resolve the information obtained and carry to X2 message and send; Certainly, to from S1 message, resolve the information obtained carries to sending and also multiple implementation can be arranged in X2 message, for example: S1 message integral body is included in X2 message and sends,, carry when sending in X2 message will from S1 message, resolve the information obtained, original S1 message does not change, and directly is packaged in X2 message and sends; Perhaps, while specifically implementing, also can carry out some modification to S1 message, then carry to X2 message and send, such as carrying out some stylistic modifications, or will re-assembly to X2 message after the partition of the information of original S1 message.

Alternatively, in an embodiment, the information of 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, use S1 message to send the information of X2 message.

The information of using S1 message to send X2 message while certainly, specifically implementing also is not limited under the disabled precondition of X2 interface.This precondition can be preset as required, for example, this precondition is preset as: the switching target is another website (as base station, relay station etc.) that has direct or indirect S1 interface to be connected with the serving BS of relay station.Especially, as to switch target be that another base station of S1 interface is arranged with the serving BS of relay station, 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 a plurality of network node with this destination node (as website or nodes such as the relay station under another base station, another base station, relay stations) and is connected.And for example switching target is another relay station under serving BS, and this S1 interface can be just direct S1 interface so.Be no matter the interface of direct S1 or S1 interface indirectly, if meet this precondition, after this serving BS receives X2 message, can obtain the information of X2 message, use S1 message to send the information of X2 message to switching target; And for example, this precondition is preset as: the switching target is the relay station under another base station that has the S1 interface to be connected with the serving BS of relay station, if meet this precondition, after this serving BS receives X2 message, can obtain the information of X2 message, use S1 message to send the information of X2 message to switching target; In addition, also this precondition not, so long as 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 directly to its serving BS, send S1Handover Required message, difference by serving BS according to the switching target, carry out handover operation, for example: if the switching target is the relay station under same serving BS, serving BS sends S1Handover Request to destination node; If the switching target is this serving BS, serving BS can be agreed switching, directly to relay station, sends S1Handover Command.Now base station is equivalent to an agency's (proxy) effect.

Similarly, the information of using X2 message to send S1 message can have a precondition, and this precondition can be: the S1 interface is unavailable.That is,, when the S1 interface is unavailable, use X2 message to send the information of S1 message.The information of using X2 message to send S1 message while certainly, specifically implementing also is not limited under the disabled precondition of S1 interface.This precondition can be preset as required, similar with aforementioned parsing X2 message, repeats no more here.In addition, also this precondition not, so long as received S1 message, just obtain the information of S1 message, and use X2 message to send the information of S1 message.

Below lift an example, the concrete enforcement of above-mentioned message treatment method in the 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 described X2 message or S1 message are for initiating handover request.Certainly, be not limited to this kind of application scenarios in enforcement, so long as can use flexibly the scene of X2 interface and S1 interface all can 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 are used 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, can use flexibly X2 interface and S1 interface to send handover request, guarantee the smooth transmission of handover request in network, optimized the signaling handling process.Concrete, relay station transmission X2-AP:HO Request(handover request) message is to base station, base station receives the information of rear this message of acquisition, (for example X2 interface is unavailable) for a certain reason, base station is used S1-AP:HO Required message that the information of message is sent to MME, then by the S1-AP message of MME, informs this handover request of target BS.Idiographic flow can as shown in Figure 4, comprise:

Step 401, relay station are used 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 of carrying out this step is optional, can be for example that X2 interface is unavailable;

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

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

Step 405, MME are used 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, and it is that handoff response returns to relay station that the S1 message content parsed is used to X2 message (X2-AP:HO Request ACK).

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, 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 base station and receiving the X2 message that relay station sends-handover request message (X2-AP:HO Request), can parse the information of this X2 handover request message, carry out the S1 switching flow with the associated stations of core net simultaneously, especially, use S1 message that the information of the X2 message of acquisition is carried in S1 message (S1-AP:HO Required), carry out possibly some stylistic modifications, or, by re-assemblying to S1 message after the partition of the information of original X2 message, make in a word the content and the form that meet S1 handover request message.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 the S1 switching flow.In like manner, if source base station receives the S1 message that core-network side is sent, can obtain the information of S1 message, use X2 message that the information of S1 message is sent to relay station.Especially, it is in handoff response that base station is used X2 message that the information of the S1 message (S1-AP:HO Command) of acquisition is carried to X2 message (X2-AP:HO Request ACK), carry out possibly some stylistic modifications, or, by re-assemblying to S1 message after the partition of the information of original S1 message, make in a word the content and the form that meet S1 handover request message.Then by this X2 message (X2-AP:HO Request ACK), be that handoff response sends to relay station.; the X2 message that relaying (source node) sends can be resolved in base station; while is according to situation or certain reason of own S1 or X2 interface; the information of the information that receives is carried to corresponding S1 message repeating destination node, and this destination node is such as being website or the nodes such as relay station under MME or another base station, another relay station, another base station, gateway; Otherwise the S1 message of core-network side is received in base station, the information of the information received can be carried to corresponding X2 message and be transmitted to relay station, thereby complete the original signaling process that uses X2 message to carry out that needs.During concrete enforcement, the message of other type also can be carried out similar processing, 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 are used 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 of using X2 message to send.

By implementing flow process shown in Fig. 5, can use flexibly X2 interface and S1 interface to send handover request, guarantee the smooth transmission of handover request in network, optimized the signaling handling process.Concrete, initiate S1-AP:HO Required message to base station when relay station, base station receives the information of rear this message of acquisition, alternatively, (for example the S1 interface is unavailable) for a certain reason, base station is used 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 are used 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 of carrying out this step is optional, can be for example that the S1 interface is unavailable;

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

Step 604, source base station parse the information of X2-AP:HO Command message, and it is that handoff response returns to relay station that the information of the X2 message that parses is used to S1 message (S1-AP:HO Request ACK).

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

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

Step 701, source relay station are used 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 of carrying out this step is optional, can be for example that the 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 under target BS (S1-AP:HO Required); The precondition of carrying out this step is optional, can be for example that X2 interface is unavailable;

Relay station under step 704, target BS, when allowing switching, is used S1 message (S1-AP:HO Request ACK) to return to 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, and it is that handoff response returns to relay station that the information of the X2 message that parses is used to S1 message (S1-AP:HO Request ACK).

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

Step 801, relay station are used 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 of carrying out this step is optional, can be for example that X2 interface is unavailable;

Step 803, MME are used 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 under target BS (X2-AP:HO Request); The precondition of carrying out this step is optional, can be for example that the S1 interface is unavailable;

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

Step 807, MME are used 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, and it is that handoff response returns to relay station that the information of the S1 message that parses is used to X2 message (X2-AP:HO Request ACK).

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

Step 901, source relay station are used 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 of carrying out this step is optional, can be for example that X2 interface is unavailable;

Step 903, target relay station, when allowing switching, are used S1 message (S1-AP:HO Command) to return to handoff response to base station;

Step 904, base station parse the information of S1-AP:HO Request ACK message, and it is that handoff response returns to the source relay station that the information of the S1 message that parses is used to X2 message (X2-AP:HO Request ACK).

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

Step 1001, source relay station are used 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 of carrying out this step is optional, can be for example that the S1 interface is unavailable;

Step 1003, target relay station, when allowing switching, are used X2 message (X2-AP:HO Command) to return to handoff response to base station;

Step 1004, base station parse the information of X2-AP:HO Request ACK message, and it is that handoff response returns to the source relay station that the information of the X2 message that parses is used to S1 message (S1-AP:HO Request ACK).

The invention process also provides a kind of message treatment method, and the method can comprise: obtain the information sent by X2 message, send the first repeating transmission notice, with indication, use the S1 interface to send described information; And/or, obtain the information sent by S1 message, send the second repeating transmission notice, with indication, use X2 interface to send described information, thereby realize the flexible use of X2 interface and S1 interface, guarantee 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 being implemented by devices such as base station, relay stations.When being implemented by base station, there is information exchange between base station and relay station, base station shows to wish that to relay station relay station is used the interface resend message content of appointment.

During concrete enforcement, in above-mentioned message treatment method, the first use S1 interface of retransmitting the notice indication sends information can various ways, can be for example to use the S1 interface to send the information of X2 message, concrete, can be: X2 message integrated carrying is resend to S1 message; The Information invariability of the message resend, but the information of this message need carry to the message of another type and resend, the message of this another type be the S1 message transmitted by the S1 interface; Can also be: the information of the message resend changes to some extent, such as the information to original X2 message extracted, the processing 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 indication and use the S1 interface to send message;

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

Similarly, the second use X2 interface of retransmitting the notice indication sends information also can have various ways, can be for example the information that the use X2 interface sends S1 message, concrete, can be: S1 message integrated carrying is resend to X2 message; The Information invariability of the message resend, but the information of this message need carry to the message of another type and resend, 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 to original S1 message extracted, the processing 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 S1-AP(that transmit leg sends as HO Request);

Step 1202, receive direction transmit leg send the second repeating transmission notice indication 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 the first repeating transmission notice, described the first repeating transmission notice indication is used the S1 interface to send information can also a precondition, and this precondition can be: X2 interface is unavailable, and for example the X2 interface of base station and core-network side is unavailable.When obtain be the information sent with X2 message the time, described first retransmits notice, and can also to be used to indicate X2 interface unavailable; Sending the first repeating transmission notice while certainly, specifically implementing also is not limited under the disabled precondition of X2 interface.This precondition can be preset as required, for example, this precondition is preset as: the switching target is another website (as base station, relay station etc.) that has direct or indirect S1 interface to be connected with the serving BS of relay station.Especially, as to switch target be that another base station of S1 interface is arranged with the serving BS of relay station, 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 a plurality of network node with this destination node (as website or nodes such as the relay station under another base station, another base station, relay stations) and is connected.And for example switching target is another relay station under serving BS, and this S1 interface can be just direct S1 interface so.Be no matter the interface of direct S1 or S1 interface indirectly, if meet this precondition, after this serving BS obtains X2 message, can send the first repeating transmission notice, indication is used the S1 interface to send information; And for example, this precondition is preset as: the switching target is the relay station under another base station that has the S1 interface to be connected with the serving BS of relay station, if meet this precondition, after this serving BS obtains X2 message, can send the first repeating transmission notice, indication is used the S1 interface to send information; In addition, also this precondition not, so long as obtained X2 message, just send the first repeating transmission notice, and indication is used the S1 interface to send information.

Similarly, send second and retransmit notice, described second retransmits the notice indication uses X2 interface transmission information that a precondition can also be arranged, this precondition can be: the S1 interface is unavailable, when obtain be the information sent with S1 message the time, described second retransmits notice, and can also to be used to indicate the S1 interface unavailable; Sending the second repeating transmission notice while certainly, specifically implementing also is not limited under the disabled precondition of S1 interface.This precondition can be preset as required, with aforementioned transmission first, retransmits and notifies similarly, repeats no more here.In addition, also this precondition not, so long as obtained S1 message, just send the second repeating transmission notice, and indication is used X2 interface to send information.

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

X2-AP：HANDOVER?PREPARATION?FAILURE?message?with?an?appropriate?cause?value

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

Similarly, send second and retransmit notice, described the second repeating transmission notice indication is used X2 interface to send information also can be had numerous embodiments, for example can be embodied as: transmission switching refuse information, be provided with particular value in described switching refuse information, described particular value indication is used X2 interface to send information; And for example can be embodied as: send a particular message, this particular message indication is used 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:

The notice whether X2 interface between step 1301a, transmission and neighbor site is available, when X2 interface is unavailable, used the S1 interface to send information with indication;

The information that step 1302a, reception are used the 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:

The whether available notice of S1 interface between step 1301b, transmission and neighbor site, when the S1 interface is unavailable, used X2 interface to send information with indication;

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

By flow process shown in Figure 13 A, Figure 13 B, can be learnt, in the embodiment of the present invention, the notice whether X2 interface between transmission and neighbor site is available, when X2 interface is unavailable, used the S1 interface to send information with indication; And/or the notice whether the S1 interface between transmission and neighbor site is available, when the S1 interface is unavailable, used X2 interface to send information with indication, can realize the flexible use of X2 interface and S1 interface, guarantees the smooth transmission of message content, the optimization signaling process.The X2 interface of base station and neighbor site of can giving advance notice in a word can be used situation, avoids the X2 interface of base station and neighbor site cannot the used time, just notifies this X2 interface of receiving node (as relay station) unavailable, the situation that causes message to repeat.

During concrete enforcement, above-mentioned message treatment method can be implemented by the device that can realize its function, such as being implemented by devices such as base station, relay stations.For example, while between relay station and base station, setting up X2 interface, the interface message of mutual each self-supporting between base station and relay station, telling relay station oneself as base station supports which adjacent sites to have X2 interface to have or do not support the X2 interface of which adjacent sites with, relay station just can not initiated X2HO like this, and directly initiated S1HO, and avoided failure handling, also saved the HO time delay.

Base station tells relay station oneself to support which adjacent sites to have X2 interface to have or do not support the X2 interface of which adjacent sites with, multiple specific measures for implementation can be arranged, can be for example:

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

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

In order to make, network can configure the LTE system automatically, Automatic Optimal, and the operation and maintenance of network has been proposed to requirement, proposes thus Self-Organizing Network(self-configuring network, SON).In SON, automatically setting up neighborhood also is necessary, neighborhood can be described by a neighborhood list (neighbor relation table), for example can comprise particularly home base stations (or home cell) beacon information, target BS (or Target cell) beacon information, X2 interface information etc., handover information etc.Base station can be notified the some or all of information 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 relay station oneself to support which adjacent sites to have X2 interface to have or do not support the X2 interface of which adjacent sites with, can be periodically to notify, also can right and wrong periodically to notify.

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

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

And for example, base station and other websites are (as MME, gateway, base station, relay station etc.) between when setting up the S1 interface, base station can be by interface message between own and other websites (as S1 interface and/or X2 interface, perhaps other interface messages) tell relay station, take the S1 interface as example, base station informs that relay station oneself and which website (as which neighbor base stations) have S1 interface (supporting in other words the S1 interface of base station and this website) or which adjacent base station there is no S1 interface (not supporting in other words the S1 interface of base station and this website) with, thereby the information that relay station can be informed by base station, just can not initiate S1HO, and directly initiated X2HO, avoided failure handling, also saved the HO time delay.

Obtain interface message about relay station:

During concrete enforcement, relay station can obtain:

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

Especially, in terminal switching process, a plurality of candidate target websites of relay station and terminal (as target BS, or target relay station) while carrying out information exchange, just use a S1/X2 interface at the Un mouth, then by this S1/X2 interface and a plurality of candidate target website, carried out information interaction.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 has S1 and X2 interface with the serving BS of oneself, and relay station and other neighbor base stations also have S1 interface and/or X2 interface in addition.So now on the Un interface, just have a plurality of S1 interfaces and/or a plurality of X2 interface (number is more than or equal to 1).A plurality of S1 interfaces like this, a plurality of X2 interface, for having passed through the serving BS of relay station, in fact can be referred to as logic interfacing rather than physical interface.

For above-mentioned two situations, particularly, when neighbor site is the relay station under neighbor base stations, need the relation information of this target relay station and its serving BS notice relay station; Perhaps

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

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

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

Relay station is according to the interface message relevant for base station and neighbor site, or the interface message of this relay station and neighbor site, determines that initiation S1 message is switched or initiating X2 message is switched.

Particularly, take X2 interface as example, relay station is learnt and has been obtained base station and candidate target website (as neighbor base stations, relay station under neighbor base stations, the perhaps X2 interface information of neighbours' relay station etc.) interface available information, relay station is initiated X2 message to the candidate target website, is switched.

How to safeguard described interface message about relay station:

Alternatively, relay station will be safeguarded 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 is initiatively initiated request, require base station or neighbor site that relevant information is provided, or obtain this information by base station;

B) also can base station or neighbor site unsolicited;

C) above-mentioned two situations, particularly, for example, in the S1 and/or X2 interface process of establishing of relay station and base station, or relay station and set up and obtain in S1 and/or X2 interface process by base station and neighbor site;

D) acquisition of this information can also be periodically.

During concrete enforcement, above-mentioned message treatment method can also comprise: send the load instruction information of neighbor site, carry out the targeted sites switching with indication according to described load instruction information and select.For example, relay station is told by the load instruction information of neighbor site in base station, allows more reasonably select target website of relay station.Be exactly to allow base station tell relay station load instruction information (load information) information in brief, relay station just can be selected target eNB preferably like this, also is 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:

The notice whether X2 interface between step 1401a, reception and neighbor site is available;

Step 1402a, when X2 interface is unavailable, use the S1 interface 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:

The whether available notice of S1 interface between step 1401b, reception and neighbor site;

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

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

By flow process shown in Figure 14 A, Figure 14 B, can be learnt, in the embodiment of the present invention, the notice whether X2 interface between reception and neighbor site is available, when X2 interface is unavailable, used the S1 interface to send information; And/or the notice whether the S1 interface between reception and neighbor site is available, when the S1 interface is unavailable, used X2 interface to send information, can realize the flexible use of X2 interface and S1 interface, guarantees the smooth transmission of message content, optimizes signaling process.

Take X2 interface as example, base station informs that relay station oneself and which website (as which neighbor base stations) have X2 interface (supporting in other words the X2 interface of base station and this website) or which adjacent base station there is no X2 interface (not supporting in other words the X2 interface of base station and this website) with, thereby the information that relay station can be informed by base station, just can not initiate X2HO, and directly initiated S1HO, avoid failure handling, also saved the HO time delay.

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

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

The whether available notice of S1 interface between reception and neighbor site can comprise: receive the whether available notice of S1 interface between services sites and neighbor site, or receive the whether available notice of S1 interface between relay and neighbor site.

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

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

The embodiment of the present invention is applicable to above-mentioned situation, especially, in terminal switching process, a plurality of candidate target websites of relay station and terminal are (as target BS, perhaps target relay station) while carrying out information exchange, just use a S1/X2 interface at the Un mouth, then by this S1/X2 interface and a plurality of candidate target website, carried out information interaction.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 has S1 and X2 interface with the serving BS of oneself, and relay station and other neighbor base stations also have S1 interface and/or X2 interface in addition.So now on the Un interface, just have a plurality of S1 interfaces and/or a plurality of X2 interface (number is more than or equal to 1).A plurality of S1 interfaces like this, a plurality of X2 interface, for having passed through the serving BS of relay station, in fact can be referred to as logic interfacing rather than physical interface.The embodiment of the present invention is equally applicable to above-mentioned situation.

Whether X2 interface is arranged for above-mentioned base station and neighbor base stations or whether X2 interface is available can mean current base station and target BS/targeted sites (or community of target BS/targeted sites, be Target cell) between, whether use X2 interface 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 (initiate procedures towards the eNB parenting the target cell).Particularly, whether X2 interface is arranged for above-mentioned base station and neighbor base stations or whether X2 interface is available can also mean: whether base station and neighbor base stations can use X2 interface to carry out the X2 switching, be whether base station can carry out X2 switching 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 be notified the some or all of information in above-mentioned neighborhood list to relay station.Particularly, in all embodiments, base station can tell which adjacent sites relay station oneself supports have X2 interface to have or do not support the X2 interface of which adjacent sites.

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

Below lift an instantiation again 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 (Measurement report) to relay station (RN);

Step 1502, relay station are after the measurement report of the UE received, based on measurement report and the definite initiation handover request that needs of wireless resource management information; Relay station is used 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 of carrying out this step is optional, can be for example that X2 interface is unavailable;

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

Step 1505, target BS, when allowing switching, are used S1 message (S1-AP:HO Request ACK) to return to handoff response to MME;

Step 1506, MME are used 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, and it is that handoff response returns to relay station that the information of the S1 message that parses is used to X2 message (X2-AP:HO Request ACK);

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

Step 1509, relay station are used 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 the base station state and transmit message (S1-AP:eNB status transfer) to mobile management entity; The precondition of carrying out this step is optional, can be for example that X2 interface is unavailable;

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

Step 1512a-c, relay station are used the X2 interface data to source base station; Source base station is used the S1 interface to transmit data to gateway; Gateway is used the S1 interface to transmit data to target BS; Also have a kind of possible enforcement to be, relay station is used X2 interface directly data to be sent to target BS (Data forwarding);

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

Step 1514, UE successfully are 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 are used S1 message to send switching notice (S1-AP:Handover Notify) to MME;

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

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

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

Step 1519, MME are used S1 message to select response (S1-AP:Path switch request ACK) to the target BS transmit path;

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

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

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

In this example, the information of the X2 message obtained is carried to S1 message and sent, for example, in the LTE handoff procedure, base station and target BS complete handover information alternately and complete switching flow by X2 interface, specifically use X2 message to send Handover Request message and Handover Request ACK message.

Base station and target BS are by the S1 interface, and complete handover information alternately and complete switching flow by MME, used particularly S1 message Handover Requried, Handover Request, Handover Request ACK, Handover command message.

Therefore can complete switching flow by S1 and X2 message, wherein in message, all comprised the needed information interaction of switching, different in essence is exactly that the sign used separately with X2 of S1 is different, because base station is not directly to communicate by letter with target BS, but communicate by letter with target BS by MME, therefore having used S1AP ID(as S1 message comprises MME UE S1AP ID, eNB UE S1AP ID), X2 has been used an X2AP ID(to comprise old eNB X2AP ID, New eNB X2AP ID).

Resolve in addition the information of each message that RN sends due to base station, so base station can obtain the information of each X2 message.Therefore provide a lot of extraneous informations for by S1 message, sending X2 message, for example base station can comprise MME UE S1AP ID for this corresponding S1 message arrangement S1AP ID(, eNBUE S1AP ID, this IDs can be the base station configuration, can be also the MME configuration, or base station and MME negotiation acquisition).Direct forwarding path availability base station is also the acquisition that can judge voluntarily.

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

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

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

Step 1602, relay station are after the measurement report of the UE received, based on measurement report and the definite initiation handover request that needs of wireless resource management information; Relay station is used 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 of carrying out this step is optional, can be for example that the S1 interface is unavailable;

Step 1604, target BS, when allowing switching, are used 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, and it is that handoff response returns to relay station that the information of the X2 message that parses is used to S1 message (S1-AP:HO Request ACK);

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

Step 1607, relay station are used 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 the base station state and transmit message (X2-AP:eNB status transfer) to target BS; The precondition of carrying out this step is optional, can be for example that the S1 interface is unavailable;

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

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

Step 1611, UE successfully are 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 the path change flow process, and the data of terminating gateway have sent to target BS rather than source serving BS thus;

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

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

Step 1615, relay station discharge resource and the information relevant with the subscriber equipment terminal, and the 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 to come the hardware that instruction is relevant to complete by program, described program can be stored in a computer read/write memory medium, this program is when carrying out, can comprise all or part of step in above-described embodiment method, described storage medium can comprise: ROM, RAM, disk, CD etc.

Also provide a kind of message processing apparatus in the embodiment of the present invention, as described in the following examples.Because these devices, the system principle of dealing with problems are similar to message treatment method, so the enforcement of these devices, system can be referring to the enforcement of method, and the repetition part repeats 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:

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

The first processing module 1702a, send the information of described X2 message for using S1 message;

And/or this device comprises:

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

The second processing module 1702b, send the information of described S1 message for using X2 message.

In an embodiment, the first processing module 1702a can specifically for: will from X2 message, resolve the information obtained and carry to S1 message and send; The second processing module 1702b can specifically for: will from S1 message, resolve the information obtained and carry to X2 message and send.

In an embodiment, the first processing module 1702a can specifically for: described X2 message integral body is included in described S1 message and sends; The second processing module 1702b can specifically for: described S1 message integral body is included in described X2 message and sends.

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:

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

The first processing module 1802a, for sending the first repeating transmission notice, used the S1 interface to send described information with indication;

And/or this device comprises:

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

The second processing module 1802b, for sending the second repeating transmission notice, used X2 interface to send described information with indication.

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

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

Described the second repeating transmission notice is carried in the specific bit of an existing message, or described the 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:

The first receiver module 1901a, for receive and neighbor site between the whether available notice of X2 interface;

The first sending module 1902a, for when X2 interface is unavailable, used the S1 interface to send information;

And/or,

The second receiver module 1901b, for receive and neighbor site between the whether available notice of S1 interface;

The second sending module 1902b, for when the S1 interface is unavailable, used X2 interface to send information.

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

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

The 3rd sending module 2002, for according to described load instruction information, carry out the targeted sites switching and select.

In an embodiment, the whether available notice of X2 interface between described reception and neighbor site comprises: receive the whether available notice of X2 interface between services sites and neighbor site, or receive the whether available notice of X2 interface between relay and neighbor site;

The whether available notice of S1 interface between described reception and neighbor site comprises: receive the whether available notice of S1 interface between services sites and neighbor site, or receive the whether available notice of S1 interface between relay and neighbor site.

Device described in the present embodiment can be carried out the whole bag of tricks flow process of embodiment before, and described device can be specifically the service node in network, includes but not limited to base station or relay station.

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

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, thereby realize the flexible use of X2 interface and S1 interface, guarantee the smooth transmission of message content, optimize signaling process;

In the embodiment of the present invention, obtain the information sent by X2 message, send the first repeating transmission notice, with indication, use the S1 interface to send described information; And/or, obtain the information sent by S1 message, send the second repeating transmission notice, with indication, use X2 interface to send described information, thereby realize the flexible use of X2 interface and S1 interface, guarantee the smooth transmission of message content, optimize signaling process;

In the embodiment of the present invention, the notice whether X2 interface between reception and neighbor site is available, when X2 interface is unavailable, used the S1 interface to send information; And/or the notice whether the S1 interface between reception and neighbor site is available, when the S1 interface is unavailable, used X2 interface to send information, thereby realize the flexible use of X2 interface and S1 interface, guarantees the smooth transmission of message content, optimizes 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 portability base station and base station cell in message.

Particularly, in the X2 interface Establishing process, base station can be set up and reply X2SETUP RESPONSE and carry the Layer for TNL(Transport Network, transport network layer by the X2 interface request of setting up X2SETUP REQUEST or X2 interface) initial information of link (association) is to neighbor base stations.In this message (X2 interface sets up request X2SETUP REQUEST or X2 interface is set up reply X2SETUP RESPONSE), the cell information that has comprised base station (Served Cell Information) and neighbor cell message corresponding to base station cell.May there be a plurality of communities a base station, the information that comprises all communities, base station in Served Cell Information so.For each community of base station, this message (X2 interface sets up request X2SETUP REQUEST or X2 interface is set up reply X2SETUP RESPONSE) also comprises the neighbor site cell information (Neighbor Information) of this each community, base station.Comprise a Cell ID(cell ID in the cell information of base station), i.e. ECGI(E-UTRAN Cell Global Identifier).ECGI is by PLMN Identity(public land mobile net sign) and E-UTRAN Cell Identifier(evolved universal terrestrial radio access network cell ID) form.E-UTRAN Cell Identifier is totally 28 bits, comprising leftmost 20 bits, is Base Station Identification (Global eNB ID).X2 interface is set up and asked also to have comprised a parameter in X2SETUP REQUEST or X2 interface foundation reply X2SETUP RESPONSE message is that base station indicates (Global eNB ID), and this base station is labeled with 20 bits.This base station indicates also over against Base Station Identification in the ECGI that is answering above-mentioned base station cell.Can know that by ECGI this community is the community belonged to below which PLMN and which base station 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 that each base station cell is corresponding (Neighbor Information) has also comprised the ECGI of neighbor site community.

In base station configuration updating (ENB CONFIGURATION UPDATE) flow process, base station, Ke Gei opposite end, base station sends base station configuration updating (ENB CONFIGURATION UPDATE) message, for TNL(Transport Network Layer is provided) link (association) lastest imformation.The cell information and neighbor cell message corresponding to base station cell that comprise base station in this information.May there be a plurality of communities base station, has just comprised all cell informations in base station in Served Cell Information information so.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 configuration updating (ENB CONFIGURATION UPDATE) message is received in the base station, opposite end, reply config update and confirm (ENB CONFIGURATION UPDATE ACKNOWLEDGE) message.

Under junction network, from the angle of terminal, relay station just is equivalent to a base station.On the 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 that the neighbor base stations of 211， base station, base station 211 is 213He base stations, 212, base station, base station 214.Wherein between

base station

211 and 212, between

base station

211 and 213, X2 interface is all arranged, 214 of 211He base stations, base station do not have X2 interface.The corresponding community of neighbor base stations 212 is community 2, and the corresponding community of neighbor base stations 213 is community 3, and the corresponding community of neighbor base stations 214 is community 4.The serving BS 211 of relay station 210 has 2 communities, comprises 1aHe community, community 1b.

In terminal switching process under relay station 210, in order to reach, allow relay station 210 know between base station 211 and other neighbor base stations whether X2 interface is arranged, initiate X2 switching or S1 switching flow so that relay station 210 can be determined, can between the Un interface, carry out in X2 interface Establishing process or base station configuration updating flow process and realize.Particularly, the neighbor base stations 212, the corresponding cell information in base station 213 that the serving BS 211 of relay station 210 has an X2 interface using it be 211 cell information as base station, is placed in the cell information list.

The cell information of a kind 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, the cell information of storage base station in the base station cell list, the neighbor cell message of storage base station cell in neighbor cell lists.Wherein, 211 community in base station comprises community 1a and 1b; The community 4 that the neighbor cell that community 1a is corresponding is neighbor base stations 212 community 2 and neighbor base stations 214 correspondences; The neighbor cell that community 1b is corresponding is neighbor base stations 213 community 3.

In the present embodiment, base station 211 can send the whether available notice of X2 interface between base station 211 and neighbor site to relay station 210, this notice can be shown as certain neighbor cell the community of base station, with the X2 interface of 211 of the base station corresponding to these neighbor cells of relay station 210 indication and base stations, can use.Perhaps, certain neighbor cell can be shown as to the community of base station, unavailable with the X2 interface of 211 of the base station corresponding to these neighbor cells of relay station 210 indication and base stations.

The cell information of the another kind of base station that thus, Figure 22 b provides for the embodiment of the present invention 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 to 211 community, base station, 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 the base station cell list, thus to the base station 212 of receiving terminal indicating cell 2 or 3 correspondences or 213 and 211 of base stations X2 interface can with or unavailable.

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

In another case, be added into base station that the neighbor cell of base station cell list is corresponding and current base station 211 interfaces and be set as availablely, and the disabled neighbor base stations of X2 interface community can not be added into the base station cell list.Relay station 210 can be judged according to Figure 22 b, base station 212,213 and base station 211 interfaces of 2 neighbor cell 2,3 correspondences are available, and do not add 211 of the 214Yu base stations, the corresponding base station of neighbor cell 4 of base station cell list there is no available X2 interface.

Neighbor cell message in Figure 22 a Zhong，Yu community 2,3 correspondences is empty, but is appreciated that if the neighbor cell message of community 2,3 correspondences is not implemented for sky does not also affect the present embodiment.For example, because neighbor cell 2 is neighbor cells of base station cell 1a, 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 is not as a kind of restriction.

The base station that can know its serving BS due to relay station indicates, also can obtain by the cell information (Served Cell Information) of base station the ECGI of each community, base station, can distinguish thus which community is real community, base station, and which community is not.Namely, by ECGI, relay station can know that the ，Er community, real community 2 and 3 of 1bShi base station, 1a， community, community is not the real community of base station.By this relation, relay station can know that being placed on community 2 and 3 is that the neighbor cell of X2 interface, neighbor cell are in addition arranged with serving BS 1 is all there is no the neighbor cell of X2 interface with serving BS 1.

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

Whether above-mentioned base station and neighbor base stations have X2 interface or noly availablely can mean whether base station and neighbor base stations can use X2 interface to carry out the X2 switching.

In like manner, the situation of above-mentioned relevant X2 interface all is applicable to the S1 interface.Whether above-mentioned base station and neighbor base stations have the S1 interface or noly availablely can mean whether base station and neighbor base stations can use the S1 interface to carry out the S1 switching.

With described method correspondingly, in the message processing apparatus shown in Figure 19, described the first receiver module 1901a comprises: the first extraction unit, for know the neighbor cell that is identified as the services sites community according to described notice; Described device also can further comprise: determination module, be defined as the unavailable or corresponding neighbor site of neighbor cell that will be identified as the services sites community of X2 interface for the corresponding neighbor site of neighbor cell that will be identified as the services sites community and be defined as X2 interface and can use, by definite result, notify 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 letter by no initiation X2, 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 will and services sites between X2 interface can with the corresponding cell ID of neighbor site be the services sites community; Described notice sending module 232, for to described services sites subordinate relay station, sending this notice, can use to indicate the X2 interface between this services sites and neighbor site; Perhaps

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

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

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

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

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

The described all kinds of situations of the present embodiment should not be considered to be limitation of the present invention.

Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is 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 modification of making, be equal to replacement, improvement etc., within all should being included in 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, can come the instruction related hardware to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise the flow process as the embodiment of 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:

When the X2 interface between described services sites and neighbor site is unavailable, use the S1 interface to send information.

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

Obtain the load instruction information of neighbor site;

According to described load instruction information, switched the selection of targeted sites.

3. a message processing apparatus, is characterized in that, this device comprises:

The first sending module, when unavailable for the X2 interface between described services sites and neighbor site, used the S1 interface to send information.

4. device as claimed in claim 3, is characterized in that, when the information sent when the first sending module is the information relevant to switching, described device also comprises:

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

The 3rd sending module, for according to described load instruction information, switched the selection of targeted sites.