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CN101541052A - Method for optimizing switching and base station equipment - Google Patents

Method for optimizing switching and base station equipment Download PDF

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Publication number
CN101541052A
CN101541052A CN200910005035A CN200910005035A CN101541052A CN 101541052 A CN101541052 A CN 101541052A CN 200910005035 A CN200910005035 A CN 200910005035A CN 200910005035 A CN200910005035 A CN 200910005035A CN 101541052 A CN101541052 A CN 101541052A
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base station
physical layer
layer configuration
configuration information
target
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CN101541052B (en
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陈君
徐小英
谢明江
黄英
马小飞
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The invention relates to the field of communication, and discloses a method for optimizing switching, which comprises the following steps: generating difference value information of the physical layer configuration information of the source base station and the physical layer configuration information of the target base station according to the physical layer configuration information of the source base station and the physical layer configuration information of the target base station; the difference information is then transmitted to the user equipment, which can be used when the user equipment is handed over from the source base station to the target base station. Meanwhile, the invention also discloses base station equipment. The method and the base station equipment can save the overhead of air interface signaling and optimize the switching process of the user equipment.

Description

A kind of method and base station equipment of optimizing switching
Technical field
The present invention relates to moving communicating field, particularly a kind of method and base station equipment of optimizing switching.
Background technology
Fast development along with the communication technology, 3GPP (3rd Generation Partnership Project, third generation partner program) proposes a kind of notion of being satisfied with the evolvement network of future communications demand, be called LTE (Long Term Evolution, Long Term Evolution).
The LTE system architecture is made up of E-UTRAN (Universal Terrestrial Radio Access Network of Evolved Universal Terrestrial Radio AccessNetwork evolution) and EPC (Evolved Packet Core, the packet-based core networks of evolution).
By shown in Figure 1, EPC mainly comprises: MME (Mobility Management Entity, mobile management entity) and S-GW (Serving Gateway, gateway); E-UTRAN comprises eNBs (base station of Evolved Node B evolution).Wherein, connect by X2 interface between each eNB, eNB is connected with EPC by the S1 interface.
In the LTE system, the switching type that has dual mode, a kind of is not have MME to change switching (being designated hereinafter simply as first kind of switching mode) between the base station down, and another is the switching (being designated hereinafter simply as second kind of switching mode) between the base station that has under the MME change.
For first kind of switching mode, main flow process comprises: when UE (UserEquipment is initiated in the source base station decision, subscriber equipment) when the switching of Target cell, source base station can connect X2 interface and target BS carries out information exchange, finishes the resource of Target cell and prepares; Source base station is sent out switching command notice UE and is switched to Target cell afterwards.
For second kind of switching mode, main flow process comprises: when UE was initiated in the source base station decision to the switching of target BS, source base station at first sent a handoff request by the S1 interface to source MME; Source MME changes request to MME and sends to target MME; After confirming to switch, target MME and target BS send the response of a MME change to source MME; Source MME sends to source base station to switching command by the S1 interface, and then sends to UE by source base station, and notice UE switches to Target cell.
In the prior art, the physical layer configurations information of source base station always can be handed down to UE by base station broadcast.For first kind of switching mode, target BS can produce its physical layer configurations information and send to UE via source base station (passing through switching command) in handoff procedure.Therefore, UE not only can receive the physical layer configurations information of the source base station that issues by broadcasting, also can receive the physical layer configurations information of the target BS that source base station sends.The present inventor finds, if this moment target BS physical layer configurations information and the physical layer configurations information of source base station is identical or part is identical, in so each handoff procedure, UE can repeat to receive some configuration informations that existed; So not only make UE power consumption more, and can increase the expense of space interface signaling (such as, switching command message).
For second kind of switching mode, with the similar process of first kind of switching mode, difference is source base station and target BS the transmitting via source MME and target MME alternately of message in switching set-up procedure.Therefore, also can produce and first kind of problem that switching is identical.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method and base station equipment of optimizing switching.
The embodiment of the invention provides a kind of method of optimizing switching, and this method comprises:
First base station receives the physical layer configurations information of second base station;
First base station generates the difference information of the physical layer configurations information of first base station and second base station according to self physical layer configurations information and the physical layer configurations information of second base station that receives;
This difference information is sent to subscriber equipment, and wherein, this difference information is used for using when subscriber equipment switches.
The embodiment of the invention also provides a kind of base station equipment, and this base station equipment comprises:
Receiving element is used for the physical layer configurations information of receiving neighbor bs;
Administrative unit, the physical layer configurations information that is used for the adjacent base station that physical layer configurations information and receiving element according to base station self receive generates the difference information of the physical layer configurations information of this base station and adjacent base station;
Transmitting element is used for the difference information that administrative unit generates is sent to subscriber equipment.
Compare than prior art, the method and the base station equipment that provide by the embodiment of the invention, subscriber equipment is by the difference information of the physical layer configurations information of adjacent two base stations of receiving the base station and issuing, can when switching, needn't repeat to receive, handle the physical layer configurations information that has obtained, so not only can save the kwh loss of subscriber equipment; Can also reduce the expense of space interface signaling when switching, reduce handover delay, improve handover success rate.
Description of drawings
Fig. 1 is the configuration diagram of LTE system in the prior art.
Fig. 2 is the schematic flow sheet of the embodiment of the invention one.
Fig. 3 is the schematic flow sheet of the embodiment of the invention two.
Fig. 4 is the schematic flow sheet of the embodiment of the invention three.
Fig. 5 is the schematic flow sheet of the embodiment of the invention four.
Fig. 6 is the schematic flow sheet of the embodiment of the invention five.
Fig. 7 is the schematic flow sheet of the embodiment of the invention six.
Fig. 8 is the structural representation of the embodiment of the invention seven.
Embodiment
The present invention will be further described in detail below in conjunction with accompanying drawing.
Embodiment one
The embodiment of the invention provides a kind of method of switching of optimizing in the LTE system.As shown in Figure 2, this method may further comprise the steps:
101, the first base stations receive the physical layer configurations information of second base station.
Wherein, this physical layer configurations information is some relevant in handoff procedure physical layer parameters.Such as, the downlink system bandwidth of sub-district, up-link bandwidth, the configuration of RACH (Random Access Channel, Random Access Channel) etc.Not can not repeating them here of these parameters referring to definition of the prior art.
102, the first base stations generate the difference information of the physical layer configurations information of first base station and second base station according to self physical layer configurations information and the physical layer configurations information of second base station that receives.
Wherein, this difference information is the physical layer configurations information part different with the physical layer configurations information of second base station of first base station.For example, suppose that in the physical layer configurations information of base station three parameters being arranged is p1, p2, p3, wherein the content of the physical layer configurations information of second base station is respectively a, b, c, and the content of the physical layer configurations information of first base station is a, b, d; So, this difference information is exactly c (p3), that is: the value c of this parameter of p3 is a difference information.
103, the difference information that generates is sent to subscriber equipment.
Wherein, this difference information can be used when subscriber equipment switches to described second base station from first base station.
By the method that above embodiment provides, first base station need not the physical layer configurations information that second base station is all and all issues subscriber equipment as long as the physical layer configurations information that second base station is different from first base station is issued subscriber equipment.So not only can reduce the expense of space interface signaling, the Radio Resource of saves valuable; Subscriber equipment also need not those physical layer configurations information that obtained of reprocessing, can reduce the power consumption of subscriber equipment.
Need to prove, more than said first base station and second base station be two adjacent base stations, that is: two base stations that connect by X2 interface.When the user when first base station switches to second base station, more than said first base station can be called source base station again, second base station can be called target BS again.
Certainly, it will be appreciated by persons skilled in the art that this difference information also can use at subscriber equipment when second base station switches to first base station.When the user when second base station switches to first base station, more than said first base station can be called target BS again; Second base station can be called source base station again.
Embodiment two
Present embodiment is an example with first kind of switching mode, has described a kind of method of optimizing switching of subscriber equipment when source base station switches to target BS.As shown in Figure 3, its main flow process comprises:
201, source base station sends handoff request message to target BS.Wherein, the physical layer configurations information that comprises source base station in this handoff request message.
202, target BS generates the difference information of source base station and target BS physical layer configurations information.
In this step, target BS generates difference information by the physical layer configurations information of physical layer configurations information that compares self and the source base station that receives.
This difference information is the physical layer configurations information of the target BS part different with the physical layer configurations information of source base station.The instantiation that generates this difference information is consistent with the description among the embodiment one, does not repeat them here.
203, target BS returns switching request acknowledgement message to source base station.
In this step, the difference information that target BS is generated is included in this switching request acknowledgement message.
204, source base station sends switching command message to subscriber equipment.
Wherein, this difference information is included in the switching command message that source base station sends to terminal.Subscriber equipment just can be according to the switching of difference information realization from the cell-of-origin to the Target cell that receives.
Need to prove, also may comprise other steps that do not illustrate in the present embodiment in the complete switching flow.And present embodiment only illustrates the closely-related step with the present invention, omitted some steps same as the prior art (such as, before subscriber equipment sent switching command message, source base station also can send downlink resource assignment messages (DL allocation) to subscriber equipment).Therefore, the method that those skilled in the art provide according to above embodiment can realize the switching flow of subscriber equipment fully.
Embodiment three
Present embodiment is an example with first kind of switching mode, has described a kind of method of optimizing switching of subscriber equipment when source base station switches to target BS.As shown in Figure 4, its main flow process comprises:
301, source base station sends handoff request message to target BS.
This step is consistent with step of the prior art, does not comprise the physical layer configurations information of source base station in this handoff request message.
302, target BS returns switching request acknowledgement message to source base station.
In this step, in this switching request acknowledgement message, comprise the physical layer configurations information of target BS.
303, source base station generates the difference information of the physical layer configurations information of target BS and source base station.
In this step, source base station is according to the physical layer configurations information of self and difference information of physical layer configurations information generation of the target BS that receives.This difference information is the physical layer configurations information of the target BS part different with the physical layer configurations information of source base station.The instantiation that generates this difference information is consistent with the description among the embodiment one, does not repeat them here.
304, source base station sends switching command message to subscriber equipment.
Wherein, this difference information is included in the switching command message that source base station sends to terminal.Subscriber equipment just can be according to the switching of difference information realization from the cell-of-origin to the Target cell that receives.
Equally, also may comprise other steps that do not illustrate in the present embodiment in a complete switching flow.And present embodiment only illustrates the closely-related step with the present invention, omitted some steps same as the prior art (such as, before subscriber equipment sent switching command message, source base station also can send downlink resource assignment messages (DL allocation) to subscriber equipment).Therefore, the method that those skilled in the art provide according to above embodiment can realize the switching flow of subscriber equipment fully.
Embodiment four
Present embodiment is an example with second kind of switching mode, has described a kind of method of optimizing switching of subscriber equipment when source base station switches to target BS.As shown in Figure 5, its main flow process comprises:
401, source base station sends handoff request message to source MME.
Wherein, carry source base station physical layer configurations information in this handoff request message.
402, source MME sends to target MME and transmits RELOCATION REQUEST message.
In this step, source MME obtains the physical layer configurations information of source base station in the handoff request message, the physical layer configurations information of source base station is comprised into to send to target MME in this forwarding RELOCATION REQUEST message then.
403, target MME sends handoff request message to target BS.
Equally, target MME obtains the physical layer configurations information of the source base station in the forwarding RELOCATION REQUEST message that source MME sends, and the physical layer configurations information of source base station is comprised into to send to target BS in this handoff request message then.
404, target BS generates the difference information of the physical layer configurations information of target BS and source base station.
In this step, the physical layer configurations information of the physical layer configurations information of target BS comparison self and the source base station that receives generates a difference information.This difference information is the physical layer configurations information of the target BS part different with the physical layer configurations information of source base station.The instantiation that generates this difference information is consistent with the description among the embodiment one, does not repeat them here.
405, target BS sends switching request acknowledgement message to target MME.
In this step, target BS comprises the difference information that generates in the step 404 into and sends to target MME in the switching request acknowledgement message.
406, target MME returns to source MME and transmits the re-positioning request response message.
In this step, this difference information that target MME will receive comprises into and sends to source MME in the re-positioning request response message.
407, source MME sends switching command message to source base station.
In this step, this difference information that source MME will receive comprises into and sends to source base station in the switching command message.
408, source base station sends switching command message to subscriber equipment.
In this step, this difference information that source base station will receive comprises into and sends to subscriber equipment in the switching command message.
Subscriber equipment just can be according to the switching of difference information realization from the cell-of-origin to the Target cell that receives.
Need to prove, also may comprise other steps that do not illustrate in the present embodiment in the complete switching flow.And present embodiment only illustrates the closely-related step with the present invention, omitted some steps same as the prior art (such as, target MME creates the step of carrying (Create Bear) in handoff procedure).Therefore, the method that those skilled in the art provide according to above embodiment can realize the switching flow of subscriber equipment fully.
Embodiment five
Present embodiment is an example with second kind of switching mode, has described a kind of method of optimizing switching of subscriber equipment when source base station switches to target BS.As shown in Figure 6, its main flow process comprises:
501～503, these steps are consistent with step of the prior art, do not comprise the physical layer configurations information of source base station in the message that sends in these steps.
504, target BS sends the switching request acknowledgement message that comprises target BS physical layer configurations information to target MME.
505～506, comprise the physical layer configurations information of target BS in the message of these steps.Mutual via these information, source base station has obtained the physical layer configurations information of target BS.
507, source base station generates the difference information of the physical layer configurations information of target BS and source base station.
In this step, the physical layer configurations information of the physical layer configurations information of source base station comparison self and the target BS that receives generates a difference information.This difference information is the physical layer configurations information of the target BS part different with the physical layer configurations information of source base station.Wherein, the instantiation that generates this difference information is consistent with the description among the embodiment one, does not repeat them here.
508, source base station sends the switching command message that comprises this difference information to subscriber equipment.Subscriber equipment just can be according to the switching of difference information realization from the cell-of-origin to the Target cell that receives.
Equally, also may comprise other steps that do not illustrate in the present embodiment in a complete switching flow.And present embodiment only illustrates the closely-related step with the present invention, omitted some steps same as the prior art (such as, target MME creates the step of carrying (Create Bear) in handoff procedure).Therefore, the method that those skilled in the art provide according to above embodiment can realize the switching flow of subscriber equipment fully.
Embodiment six
Present embodiment also provides a kind of more general method, that is: when also not switching, and the physical layer configurations information of base station receiving neighbor bs; And generate the difference information of the physical layer configurations information of this base station and adjacent base station, and preserve this difference information according to self the physical layer configurations information of physical layer configurations information and the adjacent base station that receives; When subscriber equipment will switch to this base station or this adjacent base station, this base station just can send to this difference information subscriber equipment and use.
Above process can be periodically finish (such as, every several hrs), perhaps according to Event triggered finish (such as, the system information of this base station or adjacent base station changes), or periodic and finish according to Event triggered.
Adopt this method, owing to just obtain the difference information of the physical layer configurations information of target BS and source base station when need not to switch by the time, what not only can guarantee to switch finishes the minimizing handover delay fast; Also can reduce the signaling consumption when switching, improve success rate for switching.
The following main process that further describes present embodiment according to Fig. 7:
As shown in Figure 7, suppose to have base station 1 to be adjacent two base stations (base station 1 is two base stations that are connected by X2 interface with base station 2 in other words) with base station 2.Base station 2 is property or Event triggered or periodically and according to the X2 interface that passes through of Event triggered send to base station 1 with the physical layer configurations information cycle of self; After base station 1 received the physical layer configurations information of base station 2, relatively the physical layer configurations information of self and the physical layer configurations information of base station 2 generated a difference information and preservation; Will be from the base station 1 switch to base station 2 or from the base station 2 when switching to base station 1, base station 1 just can send to this difference information this subscriber equipment and use as subscriber equipment.
Wherein, base station 2 sends its physical layer configurations information to base station 1 can be by newly-increased proprietary message, perhaps existing X2 message (such as load message Load Information), perhaps other X2 message, the perhaps newly-increased proprietary message of existing message of S1 interface or S1 interface.
By the description of above each embodiment, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly realize by hardware.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprises that some instructions are used so that an equipment is carried out the described method of each embodiment of the present invention.
Embodiment seven
The embodiment of the invention provides a kind of base station equipment, and this base station equipment comprises at least:
Receiving element is used for the physical layer configurations information of receiving neighbor bs;
Administrative unit, the physical layer configurations information that is used for the adjacent base station that physical layer configurations information and receiving element according to described base station self receive generates the difference information of the physical layer configurations information of this base station and this adjacent base station;
Transmitting element is used for the difference information that administrative unit generates is sent to subscriber equipment.
Wherein, transmitting element can comprise difference information in the switching command of giving subscriber unit of setting out and sends to subscriber equipment, makes subscriber equipment switch to adjacent base station according to this difference information.
When subscriber equipment switched to adjacent base station, this adjacent base station was called target BS again.
Being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (13)

1、一种优化切换的方法，其特征在于，所述方法包括：1. A method for optimizing switching, characterized in that the method comprises: 第一基站接收第二基站的物理层配置信息；The first base station receives physical layer configuration information of the second base station; 所述第一基站根据自身的物理层配置信息与接收到的所述第二基站的物理层配置信息生成所述第一基站与所述第二基站的物理层配置信息的差值信息；The first base station generates difference information between the physical layer configuration information of the first base station and the second base station according to its own physical layer configuration information and the received physical layer configuration information of the second base station; 将所述差值信息发送给用户设备，所述差值信息用于所述用户设备切换时使用。Send the difference information to the user equipment, where the difference information is used when the user equipment switches. 2、如权利要求1所述的方法，其特征在于，当所述第一基站为所述用户设备切换时的目标基站，所述第二基站为所述用户设备切换时的源基站时，所述第一基站接收所述第二基站的物理层配置信息并生成所述差值信息的步骤包括：2. The method according to claim 1, wherein when the first base station is the target base station when the user equipment is handed over, and the second base station is the source base station when the user equipment is handed over, the The step of the first base station receiving the physical layer configuration information of the second base station and generating the difference information includes: 所述目标基站接收所述源基站发送的包含所述源基站物理层配置信息的切换请求消息；The target base station receives a handover request message sent by the source base station and includes the physical layer configuration information of the source base station; 所述目标基站根据自身的物理层配置信息与接收到的所述源基站的物理层配置信息生成所述差值信息。The target base station generates the difference information according to its own physical layer configuration information and the received physical layer configuration information of the source base station. 3、如权利要求1所述的方法，其特征在于，当所述第一基站为所述用户设备切换时的源基站，所述第二基站为所述用户设备切换时的目标基站时，所述第一基站接收所述第二基站的物理层配置信息并生成所述差值信息的步骤包括：3. The method according to claim 1, wherein when the first base station is the source base station when the user equipment is handed over, and the second base station is the target base station when the user equipment is handed over, the The step of the first base station receiving the physical layer configuration information of the second base station and generating the difference information includes: 所述源基站接收所述目标基站发送的包含所述目标基站物理层配置信息的切换请求确认消息；The source base station receives a handover request acknowledgment message including the physical layer configuration information of the target base station sent by the target base station; 所述源基站根据自身的物理层配置信息与接收到的所述目标基站的物理层配置信息生成所述差值信息。The source base station generates the difference information according to its own physical layer configuration information and the received physical layer configuration information of the target base station. 4、如权利要求1所述的方法，其特征在于，当所述第一基站为所述用户设备切换时的目标基站，所述第二基站为所述用户设备切换时的源基站时，所述第一基站接收所述第二基站的物理层配置信息并生成所述差值信息的步骤包括：4. The method according to claim 1, wherein when the first base station is the target base station when the user equipment is handed over, and the second base station is the source base station when the user equipment is handed over, the The step of the first base station receiving the physical layer configuration information of the second base station and generating the difference information includes: 所述源基站向源移动管理实体MME发送包含所述源基站物理层配置信息的切换请求消息；The source base station sends a handover request message including the physical layer configuration information of the source base station to the source mobility management entity MME; 所述源MME向目标MME发送包含所述源基站物理层配置信息的转发重定位请求消息；The source MME sends a forwarding relocation request message including the physical layer configuration information of the source base station to the target MME; 所述目标MME向所述目标基站发送包含所述源基站物理层配置信息的切换请求消息；The target MME sends a handover request message including the physical layer configuration information of the source base station to the target base station; 所述目标基站根据自身的物理层配置信息与接收到的所述源基站的物理层配置信息生成所述差值信息。The target base station generates the difference information according to its own physical layer configuration information and the received physical layer configuration information of the source base station. 5、如权利要求1所述的方法，其特征在于，当所述第一基站为所述用户设备切换时的源基站，所述第二基站为所述用户设备切换时的目标基站时，所述第一基站接收所述第二基站的物理层配置信息并生成所述差值信息的步骤包括：5. The method according to claim 1, wherein when the first base station is the source base station when the user equipment is handed over, and the second base station is the target base station when the user equipment is handed over, the The step of the first base station receiving the physical layer configuration information of the second base station and generating the difference information includes: 所述目标基站向目标MME发送包含所述目标基站物理层配置信息的切换请求确认消息；The target base station sends a handover request confirmation message including the physical layer configuration information of the target base station to the target MME; 所述目标MME向源MME发送包含所述目标基站物理层配置信息的转发重定位响应消息；The target MME sends a forwarding relocation response message including the physical layer configuration information of the target base station to the source MME; 所述源MME向所述源基站发送包含所述目标基站物理层配置信息的切换命令消息；The source MME sends a handover command message including the target base station physical layer configuration information to the source base station; 所述源基站根据自身的物理层配置信息与接收到的所述目标基站的物理层配置信息身成所述差值信息。The source base station generates the difference information according to its own physical layer configuration information and the received physical layer configuration information of the target base station. 6、如权利要求2所述的方法，其特征在于，将所述差值信息发送到用户设备的步骤包括：6. The method according to claim 2, wherein the step of sending the difference information to the user equipment comprises: 所述目标基站向所述源基站发送包含所述差值信息的切换请求确认消息；The target base station sends a handover request confirmation message including the difference information to the source base station; 所述源基站向所述用户设备发送包含所述差值信息的切换命令消息。The source base station sends a handover command message including the difference information to the user equipment. 7、如权利要求4所述的方法，其特征在于，将所述差值信息发送到用户设备的步骤包括：7. The method according to claim 4, wherein the step of sending the difference information to the user equipment comprises: 所述目标基站向所述目标MME发送包含所述差值信息的切换请求确认消息；The target base station sends a handover request confirmation message including the difference information to the target MME; 所述目标MME向所述源MME发送包含所述差值信息的重定位请求响应消息；The target MME sends a relocation request response message including the difference information to the source MME; 所述源MME向所述源基站发送包含所述差值信息的切换命令消息；The source MME sends a handover command message including the difference information to the source base station; 所述源基站向所述用户设备发送包含所述差值信息切换命令消息。The source base station sends a handover command message including the difference information to the user equipment. 8、如权利要求3或5所述的方法，其特征在于，将所述差值信息发送给用户设备的步骤包括：8. The method according to claim 3 or 5, wherein the step of sending the difference information to the user equipment comprises: 所述源基站向所述用户设备发送包含所述差值信息的切换命令消息。The source base station sends a handover command message including the difference information to the user equipment. 9、如权利要求1-7任意一项所述的方法，其特征在于，所述差值信息为所述目标基站不同于所述源基站的那部分物理层配置信息。9. The method according to any one of claims 1-7, wherein the difference information is the part of physical layer configuration information of the target base station that is different from the source base station. 10、如权利要求2-7任意一项所述的方法，其特征在于，所述方法还包括：10. The method according to any one of claims 2-7, further comprising: 所述用户设备根据接收到的所述差值信息从所述源基站切换到所述目标基站。The user equipment is handed over from the source base station to the target base station according to the received difference information. 11、如权利要求1所述的方法，其特征在于，所述第一基站接收第二基站的物理层配置信息的步骤为：11. The method according to claim 1, wherein the step of receiving the physical layer configuration information of the second base station by the first base station is: 所述第一基站通过X2接口的负荷信息Load Information或者X2接口的新增专有消息或者S1接口已有的消息或者S1接口新增的专有消息接收所述第二基站向所述第一基站发送的所述第二基站的物理层配置信息。The first base station receives the load information Load Information of the X2 interface or the newly added proprietary message of the X2 interface or the existing message of the S1 interface or the newly added proprietary message of the S1 interface from the second base station to the first base station. The sent physical layer configuration information of the second base station. 12、如权利要求1或11所述的方法，所述方法还包括：12. The method of claim 1 or 11, further comprising: 所述第二基站根据预定的周期和/或事件触发向所述第一基站发送所述第二基站的物理层配置信息。The second base station sends the physical layer configuration information of the second base station to the first base station according to a predetermined period and/or event trigger. 13、一种基站设备，其特征在于，所述基站设备包括：13. A base station device, characterized in that the base station device includes: 接收单元，用于接收相邻基站的物理层配置信息；a receiving unit, configured to receive physical layer configuration information of adjacent base stations; 管理单元，用于根据所述基站自身的物理层配置信息与所述接收单元接收到的所述相邻基站的物理层配置信息生成所述基站与所述相邻基站的物理层配置信息的差值信息；a management unit, configured to generate a difference between the physical layer configuration information of the base station and the neighboring base station according to the physical layer configuration information of the base station itself and the physical layer configuration information of the neighboring base station received by the receiving unit value information; 发送单元，用于将所述管理单元生成的所述差值信息发送给用户设备。A sending unit, configured to send the difference information generated by the management unit to a user equipment.
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