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WO2010115313A1 - 切换方法、装置和系统 - Google Patents

切换方法、装置和系统 Download PDF

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Publication number
WO2010115313A1
WO2010115313A1 PCT/CN2009/071238 CN2009071238W WO2010115313A1 WO 2010115313 A1 WO2010115313 A1 WO 2010115313A1 CN 2009071238 W CN2009071238 W CN 2009071238W WO 2010115313 A1 WO2010115313 A1 WO 2010115313A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
bearer
local grooming
service
request message
Prior art date
Application number
PCT/CN2009/071238
Other languages
English (en)
French (fr)
Inventor
刘海
韩广林
Original Assignee
深圳华为通信技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=42935627&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2010115313(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 深圳华为通信技术有限公司 filed Critical 深圳华为通信技术有限公司
Priority to EP09842874.1A priority Critical patent/EP2410788B1/en
Priority to RU2011145574/07A priority patent/RU2496262C2/ru
Priority to JP2012503846A priority patent/JP5274708B2/ja
Priority to CN2009801581413A priority patent/CN102369759B/zh
Priority to PCT/CN2009/071238 priority patent/WO2010115313A1/zh
Priority to BRPI0924982A priority patent/BRPI0924982A2/pt
Publication of WO2010115313A1 publication Critical patent/WO2010115313A1/zh
Priority to US13/270,617 priority patent/US8457636B2/en
Priority to ZA2011/07741A priority patent/ZA201107741B/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/12—Reselecting a serving backbone network switching or routing node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/12—Reselecting a serving backbone network switching or routing node
    • H04W36/125—Reselecting a serving backbone network switching or routing node involving different types of service backbones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/32—Release of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/082—Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a handover method, apparatus, and system. Background art
  • a UE User Equipment
  • the licensed spectrum includes: UTRANCUMTS Terrestrial Radio Access Network, UMTS Terrestrial Radio Access Network, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network), CDMA (Code Division Multiple Access, code division) Wireless access network use such as multiple access), Wimax (Worldwide Interoperability for Microwave Access), WLAN (Wireless Local Area Network), and High Rate Packet Data (HR) Spectrum.
  • the HNB Home NodeB
  • the HNB GW Gateway
  • the HNB GW is connected to the SGSN (Serving GPRS Support Node).
  • the HNB GW acts as a convergence to avoid excessive HNB direct access to the SGSN and imposes an excessive load on the SGSN.
  • the SGSN is a mobility management entity. In other systems, it may be an MME (Mobility Management Entity), a WIMAX AGW (Access GateWay), or the like.
  • the source base station needs to transmit the bearer information of the data to the target base station, and the target base station is all the bearers of the UE and needs to perform data.
  • the preamble bearer prepares the resources, and then the UE starts to switch.
  • the local grooming service refers to the manner in which the traditional UE accesses the Internet through the HNB, the HNB GW SGSN, and the GGSN (Gateway GPRS Supporting Node), and the UE directly accesses the Internet through the HNB or the HNB GW. Thereby alleviating Internet traffic to mobile The consumption of core network resources. Since the local grooming service does not require high quality of service, it is not necessary to maintain the continuity of the service.
  • the IP address allocated by the HNB or HNB GW to the UE for local grooming service cannot be obtained after the UE switches to the target base station. It is maintained again, so there is no need to maintain local grooming services. In addition, it is also because the IP address used for the local grooming service can no longer be used, which causes the routing of the service traffic of the UE to be lost, thereby losing the packet.
  • the embodiment of the invention provides a handover method, device and system, which can reduce waste of resources and avoid routing errors of service traffic of the UE.
  • the technical solution is as follows:
  • a switching method comprising:
  • the UE is handed over from the source base station to the target base station, and the target base station does not establish the bearer of the local grooming service.
  • a switching device comprising:
  • An acquiring module configured to: if the user equipment UE handover is initiated, obtain the bearer information of the local grooming service of the UE;
  • a switching module configured to: according to the bearer information of the local grooming service acquired by the acquiring module, to enable the UE to switch from a source base station to a target base station, where the target base station does not establish a bearer of the local grooming service.
  • a switching system comprising: a source base station, wherein the source base station is communicably connected to a source mobility management entity,
  • the source base station is configured to: if it is determined to initiate a user equipment UE handover, acquire bearer information of the local grooming service of the UE, and send a handover request message to the source mobility management entity, where the handover request message carries the locality of the UE And carrying the bearer identifier of the service, or carrying the indication identifier that does not switch the local grooming service, after the source mobility management entity receives the handover request message, according to the bearer identifier or the indication carried in the handover request message And sending, to the target mobility management entity, a forward handover request message, where the forward handover request message does not carry the bearer context of the local grooming service, and indicates that the target base station does not establish the bearer of the local grooming service.
  • a switching system comprising: a source base station, wherein the source base station is communicably connected to a source mobility management entity,
  • the source base station is configured to: if it is determined to initiate the user equipment UE handover, acquire the bearer information of the local grooming service of the UE, and send the local grooming service to the source mobility management entity according to the bearer information of the local grooming service. Transmitting a release request message, and notifying the UE to release the bearer of the local grooming service, triggering the UE to be from the source base The station switches to the target base station, so that after the source mobility management entity receives the release request message, the bearer of the local grooming service is released.
  • a handover system comprising a source base station, the source base station being communicably connected to a source mobility management entity,
  • the source base station is configured to send a handover request message to the source mobility management entity, if it is determined to initiate a user equipment UE handover, and receive the bearer information of the local mobility management entity that obtains the local grooming service of the UE, and determine the All the bearers of the UE are the bearer release request message of the local grooming service sent by the bearer of the local grooming service, or the context release request message of the UE, releasing the bearer of the local grooming service, without triggering the UE to The source base station switches to the target base station.
  • the technical solution provided by the embodiment of the present invention performs the UE handover according to the bearer information of the UE local grooming service, so that the target base station does not establish the local grooming service bearer of the UE during the handover, and does not pre-transmit the data of the local grooming service, thereby saving resources. , avoids the packet routing error of the local grooming service.
  • FIG. 1 is a schematic diagram of accessing an Internet by a UE local grooming service according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a first handover method according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a second handover method according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a third handover method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a fourth switching method according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of a first switching device according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of a second switching device according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of a first switching system according to an embodiment of the present invention.
  • FIG. 9 is a structural diagram of a second switching system according to an embodiment of the present invention.
  • FIG. 10 is a structural diagram of a third switching system according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention is not limited to the present invention by using a home base station. Those skilled in the art should understand that the present invention can also be applied to other network architectures, and other similar changes and improvements should fall within the scope of protection of the present invention. Inside.
  • the embodiment of the present invention provides a handover method, including: if it is decided to initiate a UE handover, acquiring bearer information of the local grooming service of the UE, and causing the UE to switch from the source home base station to the target base station according to the bearer information of the local grooming service, The target base station does not establish a bearer for the local grooming service.
  • the determining whether the UE initiates the handover is usually performed by the source home base station where the UE is located according to the measurement report reported by the UE to the target base station.
  • the bearer information of the local grooming service of the UE is generally managed by the mobility management entity, and the mobility management entity can query, in the locally stored bearer information, which bearers of the UE are bearers of the local grooming service, thereby acquiring the bearer of the local grooming service of the UE. information.
  • the base station can also obtain the bearer information of the local grooming service of the UE by using the mobility management entity. For example, the mobile management entity indicates that the bearer is used for local grooming when the base station is configured to establish the bearer, so the base station can learn the local grooming.
  • the bearer information of the service or, the base station determines, according to the characteristics of the bearer, that the bearer is a local grooming bearer, for example, the base station determines that the bearer whose service quality meets the specified condition is a local grooming bearer.
  • the bearer information is information related to the bearer, including but not limited to: a bearer ID, a quality of service carried by the bearer, a bearer of the local grooming service, and the like.
  • FIG. 1 is a schematic diagram of accessing an Internet by a UE local grooming service according to an embodiment of the present invention.
  • the local grooming service of the UE has two access modes, the UE accesses the Internet through the home base station, or the UE accesses the Internet through the home base station and the home base station gateway. Any of the following two approaches can be used in the following embodiments.
  • the mobility management entity in the embodiment of the present invention includes but is not limited to: SGSN, MME, and WIMAX AGW.
  • the target base station can be any type of base station, including home base stations and other base stations.
  • the bearer that does not establish the local grooming service of the target base station includes two situations: the first one is that the target base station is not indicated by the display or implicit message in the process of the UE switching from the source home base station to the target base station.
  • the bearer of the local grooming service is established, and the bearer of the local grooming service of the UE is not switched and the data is forwarded; the second is to release the bearer of the local grooming service of the UE, and then perform the handover of the UE from the source home base station to the target base station, so that
  • the target base station also does not establish a bearer for the UE local grooming service, thereby avoiding waste of resources.
  • an embodiment of the present invention provides a handover method, where a forward handover request message sent by a source mobility management entity does not carry a bearer context of a UE local grooming service, and specifically includes:
  • Step 201 The UE sends a measurement report of the 0-target base station to the source home base station.
  • Step 202 The source home base station makes a handover decision according to the measurement report sent by the UE, and after determining the handover, the handover is requested. Requesting a message to the source mobile management entity;
  • the handover decision can be set as needed. There are various implementation manners, which are not specifically limited in the embodiment of the present invention. For example, when the measurement signal quality of the target base station is higher than the measurement signal quality of the source home base station, the handover is decided.
  • the UE accesses the Internet through the source home base station as an example.
  • the source home base station and the source home base station gateway access the Internet
  • the source home base station sends a handover request message to the source home base station gateway.
  • the source home base station gateway forwards the handover request message to the source mobility management entity.
  • the "source home base station/source home base station gateway" shown in Fig. 2 indicates that the UE accesses the Internet through the source home base station, or accesses the Internet through the source home base station and the source home base station gateway.
  • the source home base station usually also constructs a transparent transparent container data structure and carries the transparent transparent container data structure in the switching request, and the transparent container data structure encapsulates information that needs to be transparently transmitted, and is subjected to mobility management.
  • the entity transparently transmits to the target base station, and for the mobility management entity, it is not necessary to understand the information in the transparent container data structure.
  • the source home base station first acquires the bearer information of the local grooming service of the UE, and does not encapsulate the bearer information of the local grooming service in the transparent container data structure; or the source home base station may not be transparent to the transparent container.
  • the data structure performs the above processing, and the transparent container data structure is constructed according to the existing process.
  • the data contained in the transparent container data structure includes the bearer ID of the UE, and which bearers need to be forwarded by data.
  • Step 203 After receiving the handover request message from the source home base station, the source mobility management entity locally queries the bearer information of the UE local grooming service, and sends a forward handover request message to the target mobility management entity, and in the forward direction.
  • the handover request message carries the following parameters: a context of all bearers of the UE except the bearer of the UE local grooming service, and a transparent transparent container data structure;
  • the context of the bearer includes but is not limited to the following information: bearer ID and quality of service carried, and so on.
  • the source mobility management entity queries, in the locally stored bearer information, that the UE has three bearers, where the first and second belong to the local grooming service bearer, and the source mobility management entity carries the context of the third bearer. Forward switching request message.
  • Step 204 After receiving the forward handover request message from the source mobility management entity, the target mobility management entity sends a handover resource preparation notification message to the target base station to notify the target base station of the bearer context according to the bearer context carried in the message. Corresponding all bearer preparation resources, and carrying the above transparent transparent container data structure in the notification. A person skilled in the art can understand that all the bearer preparation resources corresponding to the bearer context do not include the bearer preparation resources for the UE local grooming service;
  • Step 205 After receiving the notification from the target mobility management entity, the target base station prepares resources for all bearers specified by the notification, and sends a handover resource preparation response message to the target mobility management entity, indicating that the resource has been prepared for handover.
  • the target base station does not need to prepare resources for the bearer of the UE local grooming service, and thus does not need to do the local grooming service for the UE. Data is forwarded, saving resources. If the transparent container data structure constructed by the source home base station includes bearer information of the UE local grooming service that needs to perform data pre-transmission, the target base station determines whether the bearer information (such as the bearer ID) required for the data pre-transmission is included in the target mobility management entity. If the bearer information carried in the handover resource preparation notification message is not included in the bearer information carried in the notification message, the target base station discards the data pre-transmission for the bearer.
  • the bearer information such as the bearer ID
  • Step 206 After receiving the handover resource preparation response message from the target base station, the target mobility management entity sends a forward handover response message to the source mobility management entity.
  • Step 207 After receiving the forward handover response message from the target mobility management entity, the source mobility management entity sends a handover command to the source home base station. If the UE accesses the Internet through the source home base station and the source home base station gateway, The source mobile management entity sends a handover command to the source home base station gateway, and the source home base station gateway forwards the handover command to the source home base station;
  • Step 208 After receiving the handover command from the source mobility management entity, the source home base station forwards the handover command to the UE, and after receiving the handover, the UE starts to switch to the target base station.
  • the foregoing method provided by the embodiment does not carry the context of the local grooming service bearer in the forward handover request message sent by the source mobility management entity, and avoids that the target base station establishes the local grooming service bearer of the UE when the handover is performed, thereby eliminating local paging.
  • Business data is forwarded, saving resources.
  • the bearer of the local grooming service is not switched, the local grooming service of the UE is no longer maintained, and the packet of the local grooming service is discarded, so that the packet routing error of the local grooming service does not occur.
  • the embodiment of the present invention further provides a handover method, where the handover request message sent by the source home base station carries the bearer identifier of the local handover service of the UE or the indication identifier of the local handover service, which includes:
  • Step 301 The UE sends a measurement report of the target base station to the source home base station.
  • Step 302 The source home base station performs a handover decision according to the measurement report sent by the UE, and determines the bearer information of the local grooming service of the UE after the handover, and sends a handover request message to the source mobility management entity, where the handover request message carries the UE local grooming The bearer identifier of the service, or carrying an indication identifier that does not switch the local grooming service;
  • the bearer identifier may be a bearer ID
  • the indication identifier may be a flag bit. For example, a value of 1 indicates that the local grooming service bearer of the UE is not switched, and a value of 0 indicates that the local grooming service bearer of the UE is switched.
  • the "source home base station/source home base station gateway" shown in FIG. 3 indicates that the UE accesses the Internet through the source home base station, or accesses the Internet through the source home base station and the source home base station gateway; if the UE passes the source home base station and the source The home base station gateway accesses the Internet, and the source home base station sends a handover request message to the source home base station gateway, and the source home base station gateway forwards the handover request message to the source mobility management entity;
  • the source home base station does not encapsulate the bearer information of the local grooming service in the transparent container data structure according to the acquired bearer information of the UE local grooming service.
  • the source home base station may obtain bearer information of the local grooming service of the UE from the source mobility management entity responsible for managing the UE bearer information;
  • Step 303 After receiving the handover request message from the source home base station, the source mobility management entity sends a forward handover request message to the target mobility management entity according to the bearer identifier or the indication identifier carried in the handover request message, and is in the forward direction.
  • the handover request message carries the following parameters: a context of all bearers of the UE except the bearer of the UE local grooming service, and a transparent container data structure transparently transmitted. If the bearer identifier is carried in the handover request message, the source mobility management entity may query the bearer context corresponding to the bearer identifier in the locally saved information, and do not carry the UE local grooming service in the forward handover request message.
  • the source mobility management entity may query the bearer information of the local grooming service of the UE, including the bearer context, in the forward handover request message, in the locally saved information. Carrying bearer information of the UE local grooming service;
  • the context of the bearer includes, but is not limited to, the following information: bearer ⁇ ) and the quality of service carried, and so on.
  • Step 304 to step 308 The same as step 204 to step 208, and details are not described herein again.
  • the source home base station may also encapsulate the bearer information of the local grooming service of the UE in the transparent container data structure when the transparent container data structure is constructed, and accordingly, the target base station is After receiving the handover resource preparation notification message from the target mobility management entity, determining whether the bearer information required to be forwarded by the data in the transparent container data structure is included in the bearer information carried in the notification message of the target mobility management entity, if not included in the notification message In the bearer information carried, the target base station gives up the data pre-transmission for the bearer.
  • the foregoing method provided in this embodiment by using the handover request message sent by the source home base station, carries the UE local grooming service bearer identifier or the indication identifier of the bearer that does not switch the local grooming service, so that the source mobility management entity sends the forward handover request.
  • the message does not carry the context of the local grooming service, so that the local standard grooming service bearer of the UE is established when the handover is performed, and the data of the local grooming service does not need to be forwarded, thereby saving resources.
  • an embodiment of the present invention further provides a handover method, which first releases a bearer of a UE local grooming service before the UE is handed over, and specifically includes:
  • Step 401 The UE sends a measurement report of the target base station to the source home base station.
  • Step 402 The source home base station performs a handover decision according to the measurement report sent by the UE, and determines the bearer information of the local grooming service of the UE after the handover, and releases the bearer of the local grooming service of the UE.
  • the source home base station sends a UE local grooming service bearer release request message to the source mobility management entity, and after receiving the release request message, the source mobility management entity performs a UE local grooming service bearer release process, and the source home base station also sends the wireless
  • the resource reconfiguration message is sent to the UE, and the UE is notified to release the radio bearer of the local grooming service.
  • the source home base station may acquire bearer information of the local grooming service of the UE from the source mobility management entity responsible for managing the UE bearer information.
  • Step 403 The source home base station sends a handover request message to the source mobility management entity.
  • Step 404 After receiving the handover request message from the source home base station, the source mobility management entity sends a forward handover request message to the target mobility management entity, and carries the context of all unreleased bearers of the UE in the forward handover request message.
  • the bearer context of the local grooming service of the UE is not included in the content carried in this case, because the bearer of the local grooming service of the UE has been released.
  • Step 405 After receiving the forward handover request message from the source mobility management entity, the target mobility management entity notifies the target base station to prepare resources for all bearers corresponding to the bearer context according to the bearer context carried in the forward handover request message. And sending a handover resource preparation notification message to the target base station;
  • Step 406 After receiving the handover resource preparation notification from the target mobility management entity, the target base station prepares resources for all the bearers specified by the notification, and sends a handover resource preparation response message to the target mobility management entity, indicating that resources have been prepared for handover.
  • Step 407 to step 409 The same as step 206 to step 208, and details are not described herein again.
  • the manner in which the source home base station releases the bearer of the local grooming service of the UE and sends the handover request message to the source mobile management entity may also be replaced by:
  • the source home base station first sends a handover request message to the source mobility management entity. After receiving the handover request message, the source mobility management entity acquires the bearer information of the local grooming service of the UE, releases the bearer of the local grooming service of the UE, and then continues to execute the UE. Switch the process.
  • the "source home base station/source home base station gateway" shown in FIG. 4 indicates that the UE accesses the Internet through the source home base station, or accesses the Internet through the source home base station and the source home base station gateway. In this embodiment, if the UE accesses the Internet through the source home base station and the source home base station gateway, the message exchanged between the source home base station and the source mobility management entity is forwarded by the source home base station gateway.
  • the foregoing method provided in this embodiment releases the bearer of the UE local grooming service before the UE is handed over, and then performs the UE handover, and the bearer established by the target base station in the handover process is all unreleased bearers of the UE, because the UE is locally groomed.
  • the bearer of the service has been released first. Therefore, all the bearers do not include the bearer of the UE's local grooming service, and the target base station is prevented from establishing the bearer of the UE local grooming service and the data pre-transmission of the local grooming service, thereby saving resources.
  • an embodiment of the present invention further provides a handover method, where the handover is not initiated when all the bearers of the UE are bearers of the local grooming service, including:
  • Step 501 The UE sends a measurement report to the target base station to the source home base station.
  • Step 502 The source home base station performs a handover decision according to the measurement report sent by the UE, and determines the bearer information of the local grooming service of the UE after the handover, and determines whether all bearers of the UE are local grooming services according to the bearer information of the local grooming service.
  • the bearer if yes, releases all bearers of the UE, and does not trigger the UE to switch from the source home base station to the target base station.
  • the source home base station may adopt any one of the following two methods:
  • the source home base station sends a bearer release request message of the local grooming service to the source mobility management entity, and after the source mobility management entity receives the packet, the process of releasing the local grooming service bearer is performed;
  • the source home base station sends a UE context release request message to the source mobility management entity, and after the source mobility management entity receives, deletes all bearers of the UE.
  • the bearer of the local grooming service is released first, and then the UE is triggered to switch from the source home base station to the target base station, that is, the process in the embodiment shown in FIG. , will not repeat them here.
  • the source home base station may acquire bearer information of the local grooming service of the UE from the source mobility management entity responsible for managing the UE bearer information.
  • Step 503 The source home base station sends a radio resource reconfiguration message to the UE, and notifies the UE to release the radio bearer of the local grooming service, and the UE enters an idle state, and the handover process is terminated.
  • the source home base station determines whether all the bearers of the UE are bearers of the local grooming service, and if yes, sends a bearer release request message of the local grooming service or a release request message of the UE context to the source mobility management entity.
  • the way can also be replaced by:
  • the source home base station After determining the handover, the source home base station sends a handover request message to the source mobility management entity. After receiving the handover request message, the source mobility management entity locally queries the bearer information of the UE local grooming service, and determines whether all bearers of the UE are all The bearer of the local grooming service, if yes, sends a bearer release request message or a UE context release request message of the local grooming service to the source home base station, and after receiving the source home base station, releases all bearers of the UE, and deletes the context of the UE.
  • the "source home base station/source home base station gateway" shown in FIG. 5 indicates that the UE accesses the Internet through the source home base station, or accesses the Internet through the source home base station and the source home base station gateway.
  • an embodiment of the present invention further provides a switching apparatus, including:
  • the obtaining module 601 is configured to: if it is determined to initiate the UE handover, acquire the bearer information of the local grooming service of the UE; the switching module 602 is configured to enable the UE to switch from the source home base station to the target according to the bearer information of the local grooming service acquired by the obtaining module 601.
  • the base station, the target base station does not establish a bearer for the local grooming service.
  • the foregoing apparatus may be specifically applied to the source mobility management entity.
  • the handover module 602 specifically includes: a receiving unit, configured to receive a handover request message from the source base station;
  • a switching unit configured to send a forward handover request message to the target mobility management entity after receiving the handover request message, and not carrying the local handover request message in the forward handover request message according to the bearer information of the local grooming service acquired by the obtaining module 601
  • the bearer context of the grooming service indicates that the base station of the zero label does not establish a bearer for the local grooming service.
  • the specific process is the same as that described in the embodiment shown in FIG. 2.
  • the foregoing switching unit specifically includes:
  • the extracting subunit is configured to: after receiving the handover request message, the receiving unit extracts the bearer identifier in the handover request message or the indication identifier that does not switch the local grooming service;
  • a sending sub-unit configured to send a forward handover request message to the target mobility management entity according to the bearer identifier extracted by the extracting sub-unit or the indication identifier that does not switch the local grooming service, where the forward handover request message does not carry the bearer of the local grooming service
  • the context indicates that the target base station does not establish a bearer for the local grooming service; the detailed procedure is the same as that described in the embodiment shown in FIG.
  • the switching module 602 may specifically include:
  • the triggering sub-unit is configured to trigger the UE to switch from the source home base station to the target base station after releasing the bearer of the local grooming service, and the handover procedure is specifically described in the embodiment shown in FIG. 4.
  • the switching module 602 in the foregoing apparatus may specifically include:
  • the determining unit 602a is configured to determine, according to the bearer information of the local grooming service acquired by the obtaining module 601, whether all bearers of the UE are bearers of the local grooming service;
  • the processing unit 602b is configured to: when the judgment unit 602a determines that the result is yes, release all bearers of the UE, and does not trigger the UE to switch from the source home base station to the target base station; when the result of the determination by the determining unit 602a is NO, according to the obtaining module 601
  • the bearer information of the local grooming service is obtained, and the bearer of the local grooming service is released, so that the UE switches from the source base station to the target base station, and the target base station does not establish the bearer of the local grooming service.
  • the foregoing apparatus provided in this embodiment does not carry the context of the local grooming service bearer in the forward handover request message sent by the source mobility management entity; or the UE local grooming service bearer is carried in the handover request message sent by the source home base station.
  • the target base station establishes the local grooming service bearer of the UE, and pre-transmits the data of the local grooming service, thereby saving resources.
  • the bearer of the local grooming service is not switched, the local grooming service of the UE is no longer maintained, and the packet of the local grooming service is discarded, so that the packet routing error of the local grooming service does not occur.
  • an embodiment of the present invention further provides a switching system, including:
  • the source home base station 801 is configured to: when determining to initiate the UE handover, acquire the bearer information of the local grooming service of the UE, and send a handover request message, where the handover request message carries the bearer identifier of the local grooming service of the UE, or carries the handover without local handover.
  • the indication of the service is configured to: when determining to initiate the UE handover, acquire the bearer information of the local grooming service of the UE, and send a handover request message, where the handover request message carries the bearer identifier of the local grooming service of the UE, or carries the handover without local handover.
  • the source mobility management entity 802 is configured to receive a handover request message sent by the source home base station 801, and send a forward handover request message to the target mobility management entity according to the bearer identifier or the indication identifier carried in the handover request message, where the forward handover request message is sent.
  • the bearer context of the local grooming service is not carried in the request message, indicating that the target base station does not establish a bearer for the local grooming service.
  • the specific switching process is the same as that in the embodiment shown in FIG. 3, and details are not described herein again.
  • the above system further includes:
  • a target mobility management entity configured to receive a forward handover request message from the source mobility management entity 802, send a notification message to the target base station, and notify the target base station of the bearer context according to the bearer context carried in the forward handover request message. All bearer preparation resources, and the transparent container data structure constructed by the source home base station 801 is carried in the notification message;
  • the target base station after receiving the notification message from the target mobility management entity, if the transparent container data structure includes the bearer message of the local grooming service of the UE, determining whether the bearer information is included in the bearer information carried by the notification message, if The bearer information is not included in the bearer information carried in the notification message, and the bearer is not established for the local grooming service of the UE.
  • this embodiment further provides a switching system, including:
  • the source home base station 901 is configured to: when determining to initiate a UE handover, acquire bearer information of the local grooming service of the UE, send a bearer release request message of the local grooming service according to the bearer information of the local grooming service, and notify the UE to release the local grooming service. Carrying, triggering the UE to switch from the source home base station to the target base station;
  • the source mobility management entity 902 is configured to receive a release request message sent by the source home base station 901, and release the bearer of the local grooming service.
  • the source home base station 901 triggers the UE to switch from the source home base station to the target base station, and specifically includes:
  • the releasing of all the bearers of the UE does not trigger the handover of the UE from the source home base station to the target base station, and specifically includes:
  • the source home base station 901 sends a bearer release request message of the local grooming service, or sends a context release request message of the UE to the source mobility management entity 902, requesting to release the bearer of the local grooming service, and does not trigger the UE to switch from the source home base station.
  • the source mobility management entity 902 is configured to receive the bearer release request message of the local grooming service sent by the source home base station 901, or the context release request message of the UE, to release the bearer of the local grooming service.
  • this embodiment further provides a handover system, including a source home base station 1001 and a source mobility management entity 1002:
  • the source home base station 1001 is configured to: when the user equipment UE handover is decided to be initiated, send a handover request message to the source mobility management entity 1002, receive a bearer release request message of the local grooming service from the source mobility management entity 1002, or a context release request of the UE. The message, releasing the bearer of the local grooming service, does not trigger the UE to switch from the source home base station to the target base station;
  • the source mobility management entity 1002 is configured to receive a handover request message from the source home base station 1001, obtain bearer information of the local grooming service of the UE, and determine whether all bearers of the UE are bearers of the local grooming service, and if yes, to the source home
  • the base station 1001 sends a bearer release request message of the local grooming service, or a context release request message of the UE, to perform a process of the UE switching from the source home base station 1001 to the target base station.
  • the system provided in this embodiment by using the handover request message sent by the source home base station, carries the UE local grooming service bearer identifier or the indication identifier of the bearer that does not switch the local grooming service, so that the source mobility management entity sends the forward handover request.
  • the message does not carry the context of the local grooming service bearer; or, by releasing the bearer of the UE local grooming service before the UE handover, and then performing the UE handover; or, when all the bearers of the UE are bearers of the local grooming service, After the handover condition is met, the bearer of the UE local grooming service is released, and the UE handover is not performed, thereby avoiding the target base station establishing the local grooming service bearer of the UE during the handover, and pre-transferring the data of the local grooming service, thereby saving resources.
  • All or part of the above technical solutions provided by the embodiments of the present invention may be completed by hardware related to program instructions, and the program may be stored in a readable storage medium, and the storage medium includes: a ROM, a RAM, a magnetic disk or an optical disk. And other media that can store program code.

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Description

切换方法、 装置和系统
技术领域
本发明涉及移动通信技术领域， 特别涉及一种切换方法、 装置和系统。 背景技术 说
目前国际上正在研究一种家庭基站网络架构， UE (User Equipment, 用户设备） 通过家 庭无线接入点， 使用许可的频谱通过通用的 IP接入网络， 如 DSL (Digital Subscriber Line, 数字用户线） 和电缆宽带 （Cable broadband), 连接到运营商的移动网络。 许可的频谱包括： UTRANCUMTS Terrestrial Radio Access Network, UMTS书陆地无线接入网）、 E-UTRAN(Evolved UMTS Terrestrial Radio Access Network, 演进的 UMTS 陆地无线接入网）、 CDMA (Code Division Multiple Access, 码分多址接入)、 Wimax ( Worldwide Interoperability for Microwave Access, 微波存取全球互通）、 WLAN (Wireless Local Area Network, 无线局域网） 禾 P HRPD (High Rate Packet Data, 高速分组数据） 等无线接入网络使用的频谱。 在该家庭基站网络架 构中， HNB (Home NodeB, 家庭基站）连接到 HNB GW (GateWay, 网关）， HNB GW再连 接到 SGSN ( Serving GPRS Support Node, GPRS服务支持节点）。 HNB GW起汇聚作用， 避 免过多的 HNB直接接入 SGSN给 SGSN带来过大的负荷。 该 SGSN为移动性管理实体， 在 其他系统中， 也可以是 MME (Mobility Management Entity, 移动管理实体）、 WIMAX AGW (Access GateWay, 接入网关） 等。
现有技术中当 UE从源基站切换到目标基站时，源基站将需要做数据前传的承载的信息， 通过移动管理实体透传给目标基站， 目标基站为该 UE的所有承载、 以及需要做数据前传的 承载准备资源， 然后 UE开始切换。
在实现本发明的过程中， 发明人发现上述现有技术至少具有以下缺点：
当 UE存在本地疏导（local breakout)业务时， 按照上述流程在切换过程中也会在目标基 站上重新建立承载， 但是由于本地疏导业务不需要保持业务的连续性， 因此在目标基站重新 建立承载会导致资源浪费。 本地疏导业务是指将传统的 UE通过 HNB、 HNB GW SGSN和 GGSN (Gateway GPRS Supporting Node, GPRS网关支持节点） 接入 Internet网的方式改为 UE通过 HNB或者 HNB GW直接接入 Internet网的方式， 从而减轻 Internet业务流量对移动 核心网资源的消耗。 由于本地疏导业务对服务质量要求不高， 因此不需要保持业务的连续性， 更为重要的原因是 UE切换到目标基站后， HNB或者 HNB GW分配给 UE的用于本地疏导业 务的 IP地址无法再保持了， 从而也就不需要保持本地疏导业务了。 另外， 也正是由于用于本 地疏导业务的 IP地址不能再使用了， 会导致 UE的业务流量发生路由错误， 从而丢失报文。 发明内容
本发明实施例提供了一种切换方法、 装置和系统， 可以减少资源的浪费， 以及避免 UE 的业务流量发生路由错误。 所述技术方案如下：
一种切换方法， 所述方法包括：
若决定用户设备 UE进行切换， 获取所述 UE的本地疏导业务的承载信息；
根据所述本地疏导业务的承载信息， 使得所述 UE从源基站切换到目标基站， 所述目标 基站不建立所述本地疏导业务的承载。
一种切换装置， 所述装置包括：
获取模块， 用于若决定发起用户设备 UE切换， 获取所述 UE的本地疏导业务的承载信 息；
切换模块， 用于根据所述获取模块获取的所述本地疏导业务的承载信息， 使得所述 UE 从源基站切换到目标基站， 所述目标基站不建立所述本地疏导业务的承载。
一种切换系统， 所述系统包括： 源基站， 所述源基站以可通信的方式与源移动管理实体 相连，
所述源基站用于若决定发起用户设备 UE切换， 获取所述 UE的本地疏导业务的承载信 息， 向所述源移动管理实体发送切换请求消息， 所述切换请求消息中携带所述 UE的本地疏 导业务的承载标识， 或者携带不切换本地疏导业务的指示标识， 使得所述源移动管理实体接 收到所述切换请求消息后， 根据所述切换请求消息中携带的所述承载标识或所述指示标识， 向目标移动管理实体发送前向切换请求消息， 所述前向切换请求消息中不携带所述本地疏导 业务的承载上下文， 指示所述目标基站不建立所述本地疏导业务的承载。
一种切换系统， 所述系统包括： 源基站， 所述源基站以可通信的方式与源移动管理实体 相连，
所述源基站用于若决定发起用户设备 UE切换， 获取所述 UE的本地疏导业务的承载信 息， 根据所述本地疏导业务的承载信息， 向所述源移动管理实体发送所述本地疏导业务的承 载释放请求消息， 并通知所述 UE释放所述本地疏导业务的承载， 触发所述 UE从所述源基 站切换到目标基站， 使得所述源移动管理实体收到所述释放请求消息后， 释放所述本地疏导 业务的承载。
一种切换系统， 所述系统包括源基站， 所述源基站以可通信的方式与源移动管理实体相 连，
所述源基站用于若决定发起用户设备 UE切换， 向所述源移动管理实体发送切换请求消 息， 接收所述源移动管理实体在获取所述 UE 的本地疏导业务的承载信息并判断出所述 UE 的所有承载均为本地疏导业务的承载后发来的本地疏导业务的承载释放请求消息， 或者所述 UE的上下文释放请求消息， 释放所述本地疏导业务的承载， 不触发所述 UE从所述源基站切 换到目标基站。
本发明实施例提供的技术方案， 通过根据 UE本地疏导业务的承载信息进行 UE切换， 使得切换时目标基站不建立 UE的本地疏导业务承载， 并且不对本地疏导业务的数据进行前 传， 从而节省了资源， 避免了出现本地疏导业务的包路由出错的情况。 附图说明
图 1是本发明实施例提供的 UE本地疏导业务接入因特网示意图；
图 2是本发明实施例提供的第一种切换方法流程图；
图 3是本发明实施例提供的第二种切换方法流程图；
图 4是本发明实施例提供的第三种切换方法流程图；
图 5是本发明实施例提供的第四种切换方法流程图；
图 6是本发明实施例提供的第一种切换装置结构图；
图 7是本发明实施例提供的第二种切换装置结构图；
图 8是本发明实施例提供的第一种切换系统结构图；
图 9是本发明实施例提供的第二种切换系统结构图；
图 10是本发明实施例提供的第三种切换系统结构图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚， 下面将结合附图对本发明实施方式作进 一步地详细描述。
本发明实施例以家庭基站为例并不对本发明构成限定， 本领域技术人员应当理解本发明 还可以应用于其他的网络架构中， 其他类似的改变以及改进都应当属于本发明的保护范围之 内。
本发明实施例提供了一种切换方法， 包括： 若决定发起 UE切换， 获取该 UE的本地疏 导业务的承载信息， 根据本地疏导业务的承载信息， 使得该 UE从源家庭基站切换到目标基 站， 目标基站不建立本地疏导业务的承载。
其中，决定 UE是否发起切换通常都由 UE所在的源家庭基站根据 UE上报的对目标基站 的测量报告来做的。 UE的本地疏导业务的承载信息通常由移动管理实体来管理，移动管理实 体可以在本地保存的承载信息中查询到 UE的哪些承载为本地疏导业务的承载， 从而获取到 UE的本地疏导业务的承载信息。相应地， 基站也可以通过移动管理实体来获取到 UE的本地 疏导业务的承载信息， 例如， 移动管理实体在命令基站建立承载的时候指示该承载是用于本 地疏导的， 因此基站可以获知本地疏导业务的承载信息； 或者， 基站根据承载的特点来判断 出该承载是本地疏导承载， 如基站将服务质量符合指定条件的承载判断为本地疏导承载。 所 述承载信息为与承载相关的信息， 包括但不限于： 承载 ID、 承载的服务质量、 是否为本地疏 导业务的承载等等。
参见图 1，为本发明实施例提供的 UE本地疏导业务接入因特网示意图。本发明实施例中， UE的本地疏导业务有两种接入方式， UE通过家庭基站接入 Internet网，或者 UE通过家庭基 站和家庭基站网关接入 Internet网。 下面的实施例均可以采用这两种方式中的任一种。
本发明实施例中的移动性管理实体包括但不限于： SGSN、 MME和 WIMAX AGW。 目标 基站可以为任何类型的基站， 包括家庭基站和其他基站。
在本发明实施例中， 目标基站不建立本地疏导业务的承载包含两种情况：第一种是在 UE 从源家庭基站切换到目标基站的过程中， 通过显示或隐式的消息指示目标基站不建立本地疏 导业务的承载， 从而不对 UE的本地疏导业务的承载做切换和数据前传； 第二种是先释放 UE 本地疏导业务的承载， 然后再进行 UE从源家庭基站到目标基站的切换， 使得目标基站也不 会建立 UE本地疏导业务的承载， 避免了资源浪费。 在第二种情况下， 还有一个特殊的应用 场景， 就是当 UE的所有承载均为本地疏导业务的承载时， 则释放本地疏导业务的承载即释 放了 UE的所有承载， 因此就不需要对 UE进行切换了， 进一步避免了资源浪费。 下面分别 对这几种情况进行详细说明。
参见图 2， 本发明实施例提供了一种切换方法， 在源移动管理实体发送的前向切换请求 消息中不携带 UE本地疏导业务的承载上下文， 具体包括：
步骤 201 : UE将对 0标基站的测量报告发送给源家庭基站；
步骤 202: 源家庭基站根据该 UE发来的测量报告做切换决策， 决定切换后， 发送切换请 求消息给源移动管理实体；
切换决策可以根据需要进行设置， 有多种实现方式， 本发明实施例不做具体限定， 如当 目标基站的测量信号质量高于源家庭基站的测量信号质量时， 决定切换等等。
本实施例以 UE通过源家庭基站接入 Internet网为例进行说明，当通过源家庭基站和源家 庭基站网关接入 Internet网时， 本步骤中源家庭基站将切换请求消息发送给源家庭基站网关， 源家庭基站网关再将该切换请求消息转发给源移动管理实体。 图 2中所示的 "源家庭基站 /源 家庭基站网关"表示 UE通过源家庭基站接入 Internet网， 或者通过源家庭基站和源家庭基站 网关接入 Internet网。
另外， 源家庭基站通常还会构造透传的透明容器数据结构并在该切换请求中携带所述透 传的透明容器数据结构， 该透明容器数据结构中封装了需要透传的信息， 经过移动管理实体 透传给目标基站， 对于移动管理实体来说， 是不需要理解透明容器数据结构中的信息的。 本 步骤中源家庭基站在构造透明容器数据结构时， 先获取 UE本地疏导业务的承载信息， 并且 不将本地疏导业务的承载信息封装在透明容器数据结构中； 或者源家庭基站也可以不对透明 容器数据结构进行上述处理， 按照现有的流程构造透明容器数据结构， 该透明容器数据结构 中包含的数据有 UE的承载 ID、 哪些承载需要做数据前传等。
步骤 203 : 源移动管理实体收到来自源家庭基站的切换请求消息后， 在本地查询到所述 UE本地疏导业务的承载信息，发送前向切换请求消息给目标移动管理实体， 并在该前向切换 请求消息中携带以下参数： 除所述 UE本地疏导业务的承载以外的所述 UE所有承载的上下 文， 以及透传的透明容器数据结构；
承载的上下文包括但不限于以下信息： 承载 ID和承载的服务质量等等。 通过不携带 UE 本地疏导业务的承载上下文， 可以指示目标基站不建立 UE本地疏导业务的承载， 避免了目 标基站建立 UE本地疏导业务的承载以及本地疏导业务的数据前传， 从而节省了资源。
例如， 源移动管理实体在本地保存的承载信息中查询到 UE共有 3个承载， 其中， 第一 个和第二个属于本地疏导业务承载， 则源移动管理实体将第三个承载的上下文携带在前向切 换请求消息中。
步骤 204: 目标移动管理实体收到来自源移动管理实体的前向切换请求消息后， 根据该 消息中携带的承载上下文， 通过向目标基站发送切换资源准备通知消息通知所述目标基站为 该承载上下文对应的所有承载准备资源， 并在该通知中携带上述透传的透明容器数据结构。 本领域技术人员由步骤 203可以理解， 所述为该承载上下文对应的所有承载准备资源不包括 为所述 UE本地疏导业务的承载准备资源； 步骤 205: 目标基站收到来自目标移动管理实体的所述通知后， 为该通知指定的所有承 载准备资源， 并发送切换资源准备应答消息给该目标移动管理实体， 表明已为切换准备好资 源；
如果源家庭基站构造的透明容器数据结构里不包含需要做数据前传的 UE本地疏导业务 的承载信息， 则目标基站无需为 UE本地疏导业务的承载准备资源， 也就不用为 UE的本地 疏导业务做数据前传， 从而节省了资源。 如果源家庭基站构造的透明容器数据结构里包含需 要做数据前传的 UE本地疏导业务的承载信息， 则目标基站判断该需要数据前传的承载信息 (如承载 ID) 是否包含在所述目标移动管理实体的切换资源准备通知消息携带的承载信息 中， 如果未包含在该通知消息携带的承载信息中， 则目标基站放弃为该承载建立数据前传。
步骤 206: 目标移动管理实体收到来自目标基站的切换资源准备应答消息后， 发送前向 切换应答消息给源移动管理实体；
步骤 207: 源移动管理实体收到来自目标移动管理实体的前向切换应答消息后， 发送切 换命令给源家庭基站； 若所述 UE通过源家庭基站和源家庭基站网关接入 Internet网， 则所述 源移动管理实体发送切换命令给源家庭基站网关， 源家庭基站网关再将该切换命令转发给源 家庭基站；
步骤 208: 源家庭基站收到来自源移动管理实体的切换命令后， 转发该切换命令给 UE， 该 UE收到后开始切换到目标基站；
本实施例提供的上述方法， 通过在源移动管理实体发送的前向切换请求消息中不携带本 地疏导业务承载的上下文， 避免了切换时目标基站建立 UE的本地疏导业务承载， 从而无需 对本地疏导业务的数据进行前传， 从而节省了资源。 另外， 由于对本地疏导业务的承载不做 切换， 即不再保持 UE的本地疏导业务， 本地疏导业务的包都被丢弃了， 因此也就不会出现 本地疏导业务的包路由出错的情况。 参见图 3， 本发明实施例还提供了一种切换方法， 在源家庭基站发送的切换请求消息中 携带 UE本地疏导业务的承载标识或者不切换本地疏导业务的指示标识， 具体包括：
步骤 301 : UE将对目标基站的测量报告发送给源家庭基站；
步骤 302: 源家庭基站根据 UE发来的测量报告做切换决策， 决定切换后， 获取 UE的本 地疏导业务的承载信息， 发送切换请求消息给源移动管理实体， 该切换请求消息中携带 UE 本地疏导业务的承载标识， 或者， 携带不切换本地疏导业务的指示标识；
上述切换决策可以根据需要进行设置， 有多种实现方式， 本发明实施例不做具体限定。 所述承载标识可以为承载 ID， 指示标识可以为标志位， 例如， 设置为 1表示不切换 UE的本 地疏导业务承载， 设置为 0表示切换 UE的本地疏导业务承载；
图 3中所示的 "源家庭基站 /源家庭基站网关"表示 UE通过源家庭基站接入 Internet网， 或者通过源家庭基站和源家庭基站网关接入 Internet网；如果 UE通过源家庭基站和源家庭基 站网关接入 Internet网，则源家庭基站将切换请求消息发送给源家庭基站网关，源家庭基站网 关再将该切换请求消息转发给源移动管理实体；
另外， 源家庭基站在构造透明容器数据结构时， 根据获取的 UE本地疏导业务的承载信 息， 不将本地疏导业务的承载信息封装在透明容器数据结构中。 源家庭基站可以从负责管理 UE承载信息的源移动管理实体获取到 UE的本地疏导业务的承载信息；
步骤 303 : 源移动管理实体收到来自源家庭基站的切换请求消息后， 根据该切换请求消 息中携带的承载标识或指示标识， 发送前向切换请求消息给目标移动管理实体， 并在该前向 切换请求消息中携带以下参数： 除 UE本地疏导业务的承载以外的 UE所有承载的上下文， 以及透传的透明容器数据结构。 其中， 如果切换请求消息中携带的是承载标识， 则源移动管 理实体可以在本地保存的信息中查询到该承载标识对应的承载上下文， 在前向切换请求消息 中不携带所述 UE本地疏导业务的承载 ID; 如果切换请求消息中携带的是指示标识， 则源移 动管理实体可以在本地保存的信息中查询到该 UE的本地疏导业务的承载信息， 包括承载上 下文， 在前向切换请求消息中不携带所述 UE本地疏导业务的承载信息；
承载的上下文包括但不限于以下信息： 承载 Π)和承载的服务质量等等。 通过不携带 UE 本地疏导业务的承载上下文， 可以指示目标基站不建立 UE本地疏导业务的承载， 避免了目 标基站建立 UE本地疏导业务的承载以及本地疏导业务的数据前传， 从而节省了资源。
步骤 304〜步骤 308: 与步骤 204〜步骤 208相同， 此处不再赘述。
类似地， 本实施例中， 源家庭基站也可以在构造透明容器数据结构时， 不进行特殊处理， 仍将 UE的本地疏导业务的承载信息封装在透明容器数据结构中， 相应地， 目标基站在收到 来自目标移动管理实体的切换资源准备通知消息后， 判断透明容器数据结构中需要数据前传 的承载信息是否包含在目标移动管理实体的通知消息携带的承载信息中， 如果未包含在该通 知消息携带的承载信息中， 则目标基站放弃为该承载建立数据前传。
本实施例提供的上述方法， 通过在源家庭基站发送的切换请求消息中携带 UE本地疏导 业务承载标识或不切换本地疏导业务的承载的指示标识， 使得源移动管理实体在发送的前向 切换请求消息中不携带本地疏导业务承载的上下文， 从而避免了切换时 0标基站建立 UE的 本地疏导业务承载， 无需对本地疏导业务的数据进行前传， 节省了资源。 另外， 由于对本地 疏导业务的承载不做切换， 即不再保持 UE的本地疏导业务， 本地疏导业务的包都被丢弃了， 因此也就不会出现本地疏导业务的包路由出错的情况。 参见图 4， 本发明实施例还提供了一种切换方法， 在 UE切换之前先释放掉 UE本地疏导 业务的承载， 具体包括：
步骤 401 : UE将对目标基站的测量报告发送给源家庭基站；
步骤 402: 源家庭基站根据 UE发来的测量报告做切换决策， 决定切换后， 获取 UE的本 地疏导业务的承载信息， 释放 UE的本地疏导业务的承载；
具体地， 源家庭基站向源移动管理实体发送 UE本地疏导业务承载释放请求消息， 源移 动管理实体收到该释放请求消息后， 执行 UE本地疏导业务承载释放流程， 另外， 源家庭基 站还发送无线资源重配置消息给 UE， 通知 UE释放掉本地疏导业务的无线承载。
源家庭基站可以从负责管理 UE承载信息的源移动管理实体获取到 UE的本地疏导业务 的承载信息。
步骤 403 : 源家庭基站发送切换请求消息给源移动管理实体；
步骤 404: 源移动管理实体收到来自源家庭基站的切换请求消息后， 发送前向切换请求 消息给目标移动管理实体， 并在该前向切换请求消息中携带 UE的所有未释放的承载的上下 文， 由于 UE的本地疏导业务的承载已经释放掉了， 因此， 此时携带的内容中不包含 UE的 本地疏导业务的承载上下文；
步骤 405: 目标移动管理实体收到来自源移动管理实体的前向切换请求消息后， 根据所 述前向切换请求消息中携带的承载上下文， 通知目标基站为该承载上下文对应的的所有承载 准备资源， 并向目标基站发送切换资源准备通知消息；
步骤 406: 目标基站收到来自目标移动管理实体的切换资源准备通知后， 为该通知指定 的所有承载准备资源， 并发送切换资源准备应答消息给目标移动管理实体， 表明已为切换准 备好资源；
步骤 407〜步骤 409: 与步骤 206〜步骤 208相同， 此处不再赘述。
在本实施例中， 源家庭基站释放 UE的本地疏导业务的承载后发送切换请求消息给源移 动管理实体的方式， 还可以由以下方式来替换：
源家庭基站先发送切换请求消息给源移动管理实体， 源移动管理实体收到该切换请求消 息后， 获取 UE的本地疏导业务的承载信息， 释放 UE的本地疏导业务的承载， 然后继续执 行 UE的切换流程。 图 4中所示的 "源家庭基站 /源家庭基站网关"表示 UE通过源家庭基站接入 Internet网， 或者通过源家庭基站和源家庭基站网关接入 Internet网。本实施例中， 若所述 UE通过源家庭 基站和源家庭基站网关接入 Internet网，则源家庭基站和源移动管理实体之间交互的消息均通 过源家庭基站网关来转发。
本实施例提供的上述方法， 在 UE切换前先释放掉 UE本地疏导业务的承载， 然后再进 行 UE切换， 目标基站在切换过程中建立的承载为 UE的所有未释放的承载， 由于 UE本地疏 导业务的承载已经先释放掉了， 因此该所有承载不包含 UE本地疏导业务的承载， 避免了目 标基站建立 UE本地疏导业务的承载以及本地疏导业务的数据前传， 从而节省了资源。 另外， 由于对本地疏导业务的承载不做切换， 即不再保持 UE的本地疏导业务， 本地疏导业务的包 都被丢弃了， 因此也就不会出现本地疏导业务的包路由出错的情况。 参见图 5，本发明实施例还提供了一种切换方法， 当 UE的所有承载均为本地疏导业务的 承载时不发起切换， 具体包括：
步骤 501 : UE将对目标基站的测量报告发送给源家庭基站。
步骤 502: 源家庭基站根据 UE发来的测量报告做切换决策， 决定切换后， 获取 UE的本 地疏导业务的承载信息， 根据本地疏导业务的承载信息， 判断 UE的所有承载是否均为本地 疏导业务的承载， 如果是， 则释放 UE的所有承载， 不触发 UE从源家庭基站切换到目标基 站。
具体地， 源家庭基站可以采用以下两种方式中的任一种：
源家庭基站向源移动管理实体发送本地疏导业务的承载释放请求消息， 源移动管理实体 收到后， 执行释放本地疏导业务承载的流程；
或者， 源家庭基站向源移动管理实体发送 UE上下文的释放请求消息， 源移动管理实体 收到后， 删除该 UE的所有承载。
如果该 UE的所有承载中有部分为该 UE本地疏导业务的承载， 则先释放本地疏导业务 的承载， 然后触发该 UE从源家庭基站切换到目标基站， 即图 4所示实施例中的流程， 此处 不再赘述。
源家庭基站可以从负责管理 UE承载信息的源移动管理实体获取到 UE的本地疏导业务 的承载信息。
步骤 503 : 源家庭基站发送无线资源重配置消息给 UE， 通知 UE释放掉本地疏导业务的 无线承载， UE进入空闲态， 切换流程终止。 本实施例中， 源家庭基站判断 UE的所有承载是否均为本地疏导业务的承载， 如果是， 则发送本地疏导业务的承载释放请求消息或 UE上下文的释放请求消息给源移动管理实体， 这种方式还可以由以下方式来替换：
源家庭基站在决定切换后， 发送切换请求消息给源移动管理实体， 源移动管理实体收到 该切换请求消息后， 在本地查询到 UE本地疏导业务的承载信息， 判断 UE的所有承载是否 均为本地疏导业务的承载， 如果是， 则发送本地疏导业务的承载释放请求消息或 UE上下文 的释放请求消息给源家庭基站， 源家庭基站收到后， 释放 UE的所有承载， 并删除 UE的上 下文。
图 5中所示的 "源家庭基站 /源家庭基站网关"表示 UE通过源家庭基站接入 Internet网， 或者通过源家庭基站和源家庭基站网关接入 Internet网。
在本实施例中， 由于 UE的所有承载均为本地疏导业务的承载， 因此在释放 UE本地疏 导业务承载之后， 就不存在 UE的承载了， 从而也不需要发起 UE切换了， 避免了目标基站 建立 UE本地疏导业务的承载以及本地疏导业务的数据前传， 从而节省了资源。
本实施例提供的上述方法， 应用于 UE的所有承载均为本地疏导业务承载的场景， 在符 合切换条件时， 释放掉 UE本地疏导业务的承载， 即相当于释放了 UE的所有承载， 因此也 无需再进行 UE切换， 从而避免了目标基站建立 UE本地疏导业务的承载以及本地疏导业务 的数据前传， 从而节省了资源。 另外， 由于对本地疏导业务的承载不做切换， 即不再保持 UE 的本地疏导业务， 本地疏导业务的包都被丢弃了， 因此也就不会出现本地疏导业务的包路由 出错的情况。 参见图 6， 本发明实施例还提供了一种切换装置， 包括：
获取模块 601， 用于若决定发起 UE切换， 获取 UE的本地疏导业务的承载信息； 切换模块 602，用于根据获取模块 601获取的本地疏导业务的承载信息，使得 UE从源家 庭基站切换到目标基站， 目标基站不建立本地疏导业务的承载。
上述装置可以具体应用于源移动管理实体中， 相应地， 切换模块 602具体包括： 接收单元， 用于接收来自源基站的切换请求消息；
切换单元， 用于在接收单元收到切换请求消息后， 向目标移动管理实体发送前向切换请 求消息， 并根据获取模块 601获取的本地疏导业务的承载信息在前向切换请求消息中不携带 本地疏导业务的承载上下文， 指示 0标基站不建立本地疏导业务的承载。 具体过程同图 2所 示的实施例中的描述。 当上述接收单元接收的切换请求消息中携带本地疏导业务的承载标识时， 上述切换单元 具体包括：
提取子单元， 用于在接收单元收到切换请求消息后， 提取该切换请求消息中的承载标识 或不切换本地疏导业务的指示标识；
发送子单元， 用于根据提取子单元提取的承载标识或不切换本地疏导业务的指示标识， 向目标移动管理实体发送前向切换请求消息， 该前向切换请求消息中不携带本地疏导业务的 承载上下文， 指示目标基站不建立本地疏导业务的承载； 详细过程同图 3所示的实施例中的 描述。
在本实施例中， 切换模块 602可以具体包括：
释放子单元， 用于根据获取模块 601获取的本地疏导业务的承载信息， 释放本地疏导业 务的承载；
触发子单元， 用于在释放子单元释放本地疏导业务的承载后， 触发 UE从源家庭基站切 换到目标基站， 该切换过程具体同图 4所示的实施例中的描述。
进一步地， 参见图 7， 上述装置中的切换模块 602可以具体包括：
判断单元 602a， 用于根据获取模块 601获取的本地疏导业务的承载信息， 判断 UE的所 有承载是否均为本地疏导业务的承载；
处理单元 602b， 用于当判断单元 602a判断的结果为是时， 释放 UE的所有承载， 不触发 UE从源家庭基站切换到目标基站； 当判断单元 602a判断的结果为否时， 根据获取模块 601 获取的本地疏导业务的承载信息， 释放本地疏导业务的承载， 使得 UE从源基站切换到目标 基站， 目标基站不建立本地疏导业务的承载。
本实施例提供的上述装置， 通过在源移动管理实体发送的前向切换请求消息中不携带本 地疏导业务承载的上下文； 或者， 通过在源家庭基站发送的切换请求消息中携带 UE本地疏 导业务承载标识或不切换本地疏导业务的承载的指示标识， 使得源移动管理实体在发送的前 向切换请求消息中不携带本地疏导业务承载的上下文； 或者， 通过在 UE切换前先释放掉 UE 本地疏导业务的承载， 然后再进行 UE切换； 或者， 通过在 UE的所有承载均为本地疏导业 务的承载时， 在符合切换条件下， 释放掉 UE本地疏导业务的承载， 不进行 UE切换， 从而 避免了切换时目标基站建立 UE的本地疏导业务承载， 以及对本地疏导业务的数据进行前传， 节省了资源。 另外， 由于对本地疏导业务的承载不做切换， 即不再保持 UE的本地疏导业务， 本地疏导业务的包都被丢弃了， 因此也就不会出现本地疏导业务的包路由出错的情况。 参见图 8， 本发明实施例还提供了一种切换系统， 包括：
源家庭基站 801， 用于当决定发起 UE切换时， 获取 UE的本地疏导业务的承载信息， 发 送切换请求消息， 该切换请求消息中携带 UE的本地疏导业务的承载标识， 或者携带不切换 本地疏导业务的指示标识；
源移动管理实体 802， 用于接收源家庭基站 801发来的切换请求消息， 根据该切换请求 消息中携带的承载标识或指示标识， 向目标移动管理实体发送前向切换请求消息， 该前向切 换请求消息中不携带本地疏导业务的承载上下文，指示目标基站不建立本地疏导业务的承载。 具体切换过程同图 3所示的实施例中的描述， 此处不再赘述。
进一步地， 上述系统还包括：
目标移动管理实体， 用于接收来自源移动管理实体 802的前向切换请求消息， 向目标基 站发送通知消息， 根据该前向切换请求消息中携带的承载上下文， 通知目标基站为该承载上 下文对应的所有承载准备资源， 并在该通知消息中携带源家庭基站 801构造的透明容器数据 结构；
目标基站， 用于接收来自目标移动管理实体的通知消息后， 如果透明容器数据结构中包 含 UE的本地疏导业务的承载消息， 则判断该承载信息是否包含在该通知消息携带的承载信 息中， 如果未包含在该通知消息携带的承载信息中， 则不为 UE的本地疏导业务建立承载。
另外， 参见图 9， 本实施例还提供了一种切换系统， 包括：
源家庭基站 901， 用于当决定发起 UE切换时， 获取 UE的本地疏导业务的承载信息， 根 据本地疏导业务的承载信息， 发送本地疏导业务的承载释放请求消息， 并通知 UE释放本地 疏导业务的承载， 触发 UE从源家庭基站切换到目标基站；
源移动管理实体 902， 用于接收源家庭基站 901发送的释放请求消息， 释放本地疏导业 务的承载。
其中， 源家庭基站 901触发 UE从源家庭基站切换到目标基站， 具体包括：
根据获取的本地疏导业务的承载信息， 判断 UE的所有承载是否均为本地疏导业务的承 载， 如果是， 则释放 UE的所有承载， 不触发 UE从源家庭基站切换到目标基站， 否则， 触 发 UE从源家庭基站切换到目标基站。 该切换过程具体同图 4所示的实施例中的描述， 此处 不再赘述。 进一步地， 所述释放 UE的所有承载， 不触发 UE从源家庭基站切换到目标基站， 具体包括：
源家庭基站 901发送本地疏导业务的承载释放请求消息， 或者发送 UE的上下文释放请 求消息给源移动管理实体 902，请求释放本地疏导业务的承载，不触发 UE从源家庭基站切换 到目标基站， 相应地， 源移动管理实体 902具体用于接收源家庭基站 901发送的本地疏导业 务的承载释放请求消息， 或 UE的上下文释放请求消息， 释放本地疏导业务的承载。
另外， 参见图 10， 本实施例还提供了一种切换系统， 包括源家庭基站 1001和源移动管 理实体 1002:
源家庭基站 1001，用于当决定发起用户设备 UE切换时， 向源移动管理实体 1002发送切 换请求消息， 接收来自源移动管理实体 1002的本地疏导业务的承载释放请求消息， 或者 UE 的上下文释放请求消息， 释放本地疏导业务的承载， 不触发 UE从源家庭基站切换到目标基 站；
源移动管理实体 1002，用于接收来自源家庭基站 1001的切换请求消息，获取 UE的本地 疏导业务的承载信息， 判断 UE的所有承载是否均为本地疏导业务的承载， 如果是， 则向源 家庭基站 1001发送本地疏导业务的承载释放请求消息， 或者 UE的上下文释放请求消息， 否 贝 lj， 执行 UE从源家庭基站 1001切换到目标基站的流程。
本实施例提供的上述系统， 通过在源家庭基站发送的切换请求消息中携带 UE本地疏导 业务承载标识或不切换本地疏导业务的承载的指示标识， 使得源移动管理实体在发送的前向 切换请求消息中不携带本地疏导业务承载的上下文； 或者， 通过在 UE 切换前先释放掉 UE 本地疏导业务的承载， 然后再进行 UE切换； 或者， 通过在 UE的所有承载均为本地疏导业 务的承载时， 在符合切换条件下， 释放掉 UE本地疏导业务的承载， 不进行 UE切换， 从而 避免了切换时目标基站建立 UE的本地疏导业务承载， 以及对本地疏导业务的数据进行前传， 节省了资源。 另外， 由于对本地疏导业务的承载不做切换， 即不再保持 UE的本地疏导业务， 本地疏导业务的包都被丢弃了， 因此也就不会出现本地疏导业务的包路由出错的情况。 本发明实施例提供的上述技术方案的全部或部分可以通过程序指令相关的硬件来完成， 所述程序可以存储在可读取的存储介质中， 该存储介质包括： ROM、 RAM, 磁碟或者光盘等 各种可以存储程序代码的介质。
以上所述仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本发明的精神和原则之 内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1、 一种切换方法， 其特征在于， 所述方法包括：
若决定用户设备 UE进行切换， 获取所述 UE的木地疏导业务的承载信息；
根据所述本地疏导业务的承载信息， 使得所述 UE从源基站切换到目标基站， 所述目标 基站不建立所述本地疏导业务的承载。
2、根据权利要求 1所述的切换方法， 其特征在于， 所述根据所述本地疏导业务的承载信 息， 使得所述 UE从源基站切换到目标基站， 所述目标基站不建立所述本地疏导业务的承载 具体包括：
根据所述本地疏导业务的承载信息， 使得所述 UE从源基站切换到目标基站， 指示所述 目标基站不建立所述本地疏导业务的承载。
3、根据权利要求 2所述的切换方法， 其特征在于， 所述根据所述本地疏导业务的承载信 息， 指示所述目标基站不建立所述本地疏导业务的承载具体包括：
源移动管理实体收到来自所述源基站的切换请求消息， 向目标移动管理实体发送前向切 换请求消息， 所述前向切换请求消息中不携带所述本地疏导业务的承载上下文， 指示所述目 标基站不建立所述本地疏导业务的承载。
4、根据权利要求 3所述的切换方法， 其特征在于， 所述源移动管理实体收到来自源基站 的切换请求消息， 向目标移动管理实体发送前向切换请求消息具体包括：
源移动管理实体接收来自所述源基站的切换请求消息， 所述切换请求消息中携带所述本 地疏导业务的承载标识， 根据所述承载标识向目标移动管理实体发送前向切换请求消息； 或者， 源移动管理实体接收来自所述源基站的切换请求消息， 所述切换请求消息中携带 不切换本地疏导业务的指示标识， 根据所述指示标识向目标移动管理实体发送前向切换请求 消息。
5、根据权利要求 1所述的切换方法， 其特征在于， 所述根据所述本地疏导业务的承载信 息， 使得所述 UE从源基站切换到目标基站， 所述目标基站不建立所述本地疏导业务的承载 具体包括：
根据所述本地疏导业务的承载信息， 释放所述本地疏导业务的承载， 使得所述 UE从源 基站切换到目标基站， 所述目标基站不建立所述本地疏导业务的承载。
6、根据权利要求 5所述的切换方法， 其特征在于， 所述根据所述本地疏导业务的承载信 息， 释放所述本地疏导业务的承载， 使得所述 UE从源基站切换到目标基站， 所述目标基站 不建立所述本地疏导业务的承载还包括：
若所述 UE的所有承载均为本地疏导业务的承载， 则释放所述 UE的所有承载， 不触发 所述 UE从所述源基站切换到所述目标基站。
7、 根据权利要求 6所述的切换方法， 其特征在于， 所述释放所述 UE的所有承载， 不触 发所述 UE从所述源基站切换到所述目标基站具体包括：
所述源基站判断出所述 UE的所有承载均为本地疏导业务的承载， 源移动管理实体接收 来自所述源基站的本地疏导业务的承载释放请求消息， 或者接收来自所述源基站的关于所述 UE的上下文释放请求消息；
所述源移动管理实体释放所述本地疏导业务的承载， 不触发所述 UE从所述源基站切换 到所述目标基站。
8、 根据权利要求 6所述的切换方法， 其特征在于， 所述若所述 UE的所有承载均为本地 疏导业务的承载， 则释放所述 UE的所有承载， 不触发所述 UE从所述源基站切换到所述目 标基站具体包括：
源移动管理实体接收来自所述源基站的切换请求消息， 根据所述本地疏导业务的承载信 息， 判断所述 UE的所有承载是否均为本地疏导业务的承载；
如果是， 则所述源移动管理实体向所述源基站发送本地疏导业务的承载释放请求消息， 或者所述 UE的上下文释放请求消息；
所述源基站收到所述本地疏导业务的承载释放请求消息或所述 UE的上下文释放请求消 息后， 释放所述本地疏导业务的承载， 不触发所述 UE从所述源基站切换到所述目标基站。
9、 一种切换装置， 其特征在于， 所述装置包括：
获取模块， 用于若决定发起用户设备 UE切换， 获取所述 UE的本地疏导业务的承载信 息；
切换模块， 用于根据所述获取模块获取的所述本地疏导业务的承载信息， 使得所述 UE 从源基站切换到目标基站， 所述目标基站不建立所述本地疏导业务的承载。
10、 根据权利要求 9所述的切换装置， 其特征在于， 所述切换模块具体包括： 接收单元， 用于接收来自所述源基站的切换请求消息；
切换单元， 用于根据所述接收单元收到所述切换请求消息， 向目标移动管理实体发送前 向切换请求消息， 并根据所述获取模块获取的所述本地疏导业务的承载信息在前向切换请求 消息中不携带所述本地疏导业务的承载上下文， 指示所述 0标基站不建立所述本地疏导业务 的承载。
11、 根据权利要求 10所述的切换装置， 其特征在于， 所述切换单元具体包括： 提取子单元， 用于在所述接收单元收到所述切换请求消息后， 提取所述切换请求消息中 的承载标识或不切换本地疏导业务的指示标识；
发送子单元， 用于根据所述提取子单元提取的承载标识或不切换本地疏导业务的指示标 识， 向目标移动管理实体发送前向切换请求消息， 所述前向切换请求消息中不携带所述本地 疏导业务的承载上下文， 指示所述目标基站不建立所述本地疏导业务的承载。
12、 根据权利要求 9所述的切换装置， 其特征在于， 所述切换模块具体包括： 释放子单元， 用于根据所述获取模块获取的所述本地疏导业务的承载信息， 释放所述本 地疏导业务的承载；
触发子单元， 用于在所述释放子单元释放所述本地疏导业务的承载后， 触发所述 UE从 源家庭基站切换到目标基站。
13、 根据权利要求 9所述的切换装置， 其特征在于， 所述切换模块具体包括： 判断单元， 用于根据所述获取模块获取的所述本地疏导业务的承载信息， 判断所述 UE 的所有承载是否均为本地疏导业务的承载；
处理单元， 用于当所述判断单元判断的结果为是时， 释放所述 UE的所有承载， 不触发 所述 UE从所述源基站切换到目标基站； 当所述判断单元判断的结果为否时， 根据所述获取 模块获取的所述本地疏导业务的承载信息， 释放所述本地疏导业务的承载， 使得所述 UE从 源基站切换到目标基站， 所述目标基站不建立所述本地疏导业务的承载。
14、 一种切换系统， 其特征在于， 所述系统包括： 源基站， 所述源基站以可通信的方式 与源移动管理实体相连，
所述源基站用于若决定发起用户设备 UE切换， 获取所述 UE的本地疏导业务的承载信 息， 向所述源移动管理实体发送切换请求消息， 所述切换请求消息中携带所述 UE的本地疏 导业务的承载标识， 或者携带不切换本地疏导业务的指示标识， 使得所述源移动管理实体接 收到所述切换请求消息后， 根据所述切换请求消息中携带的所述承载标识或所述指示标识， 向目标移动管理实体发送前向切换请求消息， 所述前向切换请求消息中不携带所述本地疏导 业务的承载上下文， 指示所述目标基站不建立所述本地疏导业务的承载。
15、 一种切换系统， 其特征在于， 所述系统包括： 源基站， 所述源基站以可通信的方式 与源移动管理实体相连，
所述源基站用于若决定发起用户设备 UE切换， 获取所述 UE的本地疏导业务的承载信 息， 根据所述本地疏导业务的承载信息， 向所述源移动管理实体发送所述本地疏导业务的承 载释放请求消息， 并通知所述 UE释放所述本地疏导业务的承载， 触发所述 UE从所述源基 站切换到目标基站， 使得所述源移动管理实体收到所述释放请求消息后， 释放所述本地疏导 业务的承载。
16、 根据权利要求 15所述的切换系统， 其特征在于， 所述源基站触发所述 UE从所述源 基站切换到目标基站， 具体包括：
根据获取的所述本地疏导业务的承载信息， 判断所述 UE的所有承载是否均为本地疏导 业务的承载， 如果是， 则释放所述 UE的所有承载， 不触发所述 UE从所述源基站切换到目 标基站， 否则， 触发所述 UE从所述源基站切换到目标基站。
17、 根据权利要求 16所述的切换系统， 其特征在于， 所述源基站释放所述 UE的所有承 载， 不触发所述 UE从所述源基站切换到目标基站， 具体包括：
所述源基站发送所述本地疏导业务的承载释放请求消息， 或者发送所述 UE的上下文释 放请求消息给所述源移动管理实体， 请求释放所述本地疏导业务的承载， 不触发所述 UE从 所述源基站切换到目标基站， 使得所述源移动管理实体在收到所述本地疏导业务的承载释放 请求消息， 或所述 UE的上下文释放请求消息后， 释放所述本地疏导业务的承载。
18、 一种切换系统， 其特征在于， 所述系统包括源基站， 所述源基站以可通信的方式与 源移动管理实体相连，
所述源基站用于若决定发起用户设备 UE切换， 向所述源移动管理实体发送切换请求消 息， 接收所述源移动管理实体在获取所述 UE 的本地疏导业务的承载信息并判断出所述 UE 的所有承载均为本地疏导业务的承载后发来的本地疏导业务的承载释放请求消息， 或者所述 UE的上下文释放请求消息， 释放所述本地疏导业务的承载， 不触发所述 UE从所述源基站切 换到目标基站。
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