CN102036331B - Method, system and device for realizing service handover - Google Patents
Method, system and device for realizing service handover Download PDFInfo
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- CN102036331B CN102036331B CN2009100937992A CN200910093799A CN102036331B CN 102036331 B CN102036331 B CN 102036331B CN 2009100937992 A CN2009100937992 A CN 2009100937992A CN 200910093799 A CN200910093799 A CN 200910093799A CN 102036331 B CN102036331 B CN 102036331B
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Abstract
The invention discloses a method, a system and a device for realizing service handover, which are used in 2G and 3G communication systems and can trigger a repositioning process. The method comprises that: when determining user equipment (UE) is required to be handed over to a first base station controller, a wireless network controller residing in the user equipment (UE) establishes Iur-g interface connection with the first base station controller; and the wireless network controller receives user equipment measurement report information, which is sent by the first base station controller, through the Iur-g interface connection, judges if the user equipment is required to be handed over according to the measurement report information and controls the user equipment to perform cell handover if the user equipment is required to be handed over, or executes a repositioning process with a core network. In the invention, the wireless network controller judges if the UE is required to be handed over according to the measurement report information received through the Iur-g interface connection, and the determination of a repositioning process and the handover process between the base station controllers is completely executed by the wireless network controller so as to avoid the concurrency of the repositioning process and the handover process between the base station controllers.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a system, and an apparatus for implementing service switching.
Background
In the 2G/3G interoperation process, an Iur-G interface is introduced for improving the switching success rate, and the Iur-G interface is an interface between a Radio Network Controller (RNC) and a Base Station Controller (BSC). For the research of network element fusion, four fusion schemes are proposed at present, and the basic technical principle of each scheme is as follows:
standard Iur-g interface: the load information is transmitted by using an Iur-g interface (an interface between the RNC and the BSC) defined by the standard;
standard Iur-g interface enhancements: revising a standard Iur-g interface control plane protocol, and adding a message by the RNC to directly inform the BSC to finish the switching resource reservation, thereby realizing the parallel execution of a core network flow and a mobile phone air interface access flow and reducing the switching time delay;
innovative Iur-g interface: introducing an intersystem switching flow, processing user plane data transmission, and simultaneously requiring a core network part to move down to the RNC;
unified A/Iu interface: the deep fusion is closest to the switch in the BSC of the GSM system, and requires the 2G terminal to be modified or influences the processing capacity of the 2G equipment.
The flow in the novel Iur-g interface comprises two stages: a handover procedure and a relocation procedure.
In the switching process, the service connection is firstly switched to the Iur-g interface, and then the relocation process is executed.
Referring to fig. 1, a handover procedure in the prior art is specifically as follows:
step 101: the UE REPORTs a MEASUREMENT REPORT message (MEASUREMENT REPORT) to the RNC.
Step 102: after receiving the MEASUREMENT REPORT message, the RNC sends an ENHANCED resource reservation request message (ENHANCED resource reservation request) to the BSC through the Iur-g interface, where the ENHANCED resource reservation request message carries the UE identity, current service information, and UE capability information. The same message definition as the standard supplementary flow is used, and the carried information elements are different, and here, the transmission layer information, the voice version, etc. and the RSSI of each cell measured by the UE are also included.
Step 103: after receiving the ENHANCED resource reservation REQUEST message, the BSC selects the most suitable cell in the target cell list according to the service identifier, allocates channel resources for the UE, establishes the bearer of the IUR-G interface, establishes the transmission connection between the Abis interface and the Iur-G interface for the channel, and replies an ENHANCED resource reservation RESPONSE (ENHANCED reservation RESPONSE) message to the RNC.
Step 104: after receiving the ENHANCED RELOCATION RESPONSE message, the RNC sends a HANDOVER COMMAND (HANDOVER FROM UTRAN COMMAND) to the UE over the air interface.
Step 105: the UE sends a HANDOVER ACCESS (HANDOVER ACCESS) message to the BSC.
Step 106: the BSC DETECTs the UE channel access, sends an ENHANCED RELOCATION DETECT (ENHANCED RELOCATION DETECT) message to the RNC, and the RNC switches the connection of the user plane to the BSC after receiving the message.
Step 107: the UE sends a HANDOVER COMPLETE (HANDOVER COMPLETE) message to the BSC.
Step 108: the BSC replies to the RNC with an enhanced relocation COMPLETE (enhanced relocation COMPLETE) message. The RNC releases the relevant resources and starts the forwarding of data/signaling over the Iur-g port.
Referring to fig. 2, the specific process of the prior art relocation is as follows:
step 201: and after the Iur-g switching process is successful, the UE enters a steady state.
Step 202: the RNC sends a handover request message "relocalionrequest" to the CN over the Iu port.
Step 203: the CN allocates resources for this HANDOVER and sends a Handover REQUEST message (HANDOVER REQUEST) message to the BSC.
Step 204: the BSC judges that the UE is in the Iur-g novel switching mode according to the UE identity information without reallocating channel resources, establishes an A port bearer with the CN for the UE, and replies a switching response (HANDOVER REQUEST ACKNOWLEDGE) message to the MSC.
Step 205: the CN sends a handover COMMAND (RELOCATION COMMAND) to the RNC.
Step 206: the RNC does not send an air interface switching command, and sends a (RELOCATIONCOMMIT) message to the BSC to indicate that the BSC can start to transmit and receive at the A interface.
Step 207: the BSC replies to the CN with a HANDOVER COMPLETE message.
Step 208: CN sends Iu interface connection release command (IU RELEASE ECOMMAND) to RNC to request to release the resource allocated for Iu interface connection, and the message carries release reason IE as successful switching.
Step 209: the RNC releases IU port old resources and sends an IU interface connection release COMPLETE (IURELEASE COMPLETE) message to the CN. From there, the UE is fully handed in to the 2G network.
In the prior art, the judgment condition for executing relocation is insufficient, so that the relocation process cannot be triggered. Moreover, since the relocation and handover processes occur concurrently in the actual service flow, that is, the handover between the BSC and the BSC occurs during the relocation process, the processing of the concurrent processes is very complicated.
Disclosure of Invention
The invention provides a method, a system and a device for realizing service switching, which can realize the trigger judgment of a relocation process.
The method for realizing service switching provided by the embodiment of the invention is applied to a communication system containing 2G and 3G, and comprises the following steps:
when a wireless network controller where a terminal resides determines that the terminal needs to be switched to a first base station controller, establishing Iur-g interface connection with the first base station controller;
the wireless network controller receives measurement report information of the terminal sent by a first base station controller through an Iur-g interface connection, and judges whether the terminal needs to be switched or not according to the measurement report information, wherein the measurement report information is received from the terminal after the terminal is switched to the first base station controller;
if the terminal is determined to need to be switched, controlling the terminal to switch the cell;
if the terminal is determined not to need to be switched, a relocation process is executed between the terminal and the core network.
The method for realizing service switching provided by the embodiment of the invention is applied to a communication system containing 2G and 3G, and comprises the following steps:
a first base station controller receives an enhanced relocation resource request sent by a radio network controller where a terminal resides, allocates resources for the terminal, and establishes Iur-g interface connection with the radio network controller;
after receiving the measurement report message sent by the terminal, the first base station controller sends the measurement report message to the radio network controller through Iur-g interface connection, executes the terminal cell switching process according to the control of the radio network controller when the radio network controller judges that the terminal needs to be switched according to the measurement report message, and executes the relocation process between the control of the radio network controller and a core network when the radio network controller judges that the terminal does not need to be switched according to the measurement report, wherein the measurement report message is received from the terminal after the terminal is switched to the first base station controller.
The system for implementing service switching provided by the embodiment of the invention comprises: a radio network controller in which the terminal resides, and a first base station controller, wherein,
the wireless network control is used for establishing Iur-g interface connection with a first base station controller when the terminal is determined to need to be switched to the first base station controller, receiving measurement report information of the terminal sent by the first base station controller through the Iur-g interface connection, and judging whether the terminal needs to be switched according to the measurement report information, wherein the measurement report information is received from the terminal after the terminal is switched to the first base station controller; if the terminal is determined to need to be switched, controlling the terminal to switch the cell; if the terminal is determined not to need to be switched, executing a relocation process with a core network;
the first base station controller is used for receiving an enhanced relocation resource request sent by a radio network controller where a terminal resides, allocating resources for the terminal and establishing Iur-g interface connection with the radio network controller; after receiving the measurement report message sent by the terminal, the first base station controller sends the measurement report message to the wireless network controller through Iur-g interface connection, and executes the terminal cell switching process according to the control of the wireless network controller.
The embodiment of the invention provides a wireless network controller, which comprises:
the connection establishing unit is used for establishing Iur-g interface connection with the first base station controller when the terminal is determined to need to be switched to the first base station controller;
a receiving unit, configured to receive, through an Iur-g interface, measurement report information of the terminal sent by a first base station controller, where the measurement report information is received from the terminal after the terminal is handed over to the first base station controller;
a judging unit, configured to judge whether the terminal needs to be switched according to the measurement report information;
a switching control unit, configured to control the terminal to perform cell switching if it is determined that the terminal needs to perform switching;
and the relocation control unit is used for executing the relocation process with the core network if the terminal is determined not to need to be switched.
The embodiment of the invention provides a base station controller, which comprises:
a resource allocation unit, configured to receive an enhanced relocation resource request sent by a radio network controller where a terminal resides, allocate resources for the terminal, and establish an Iur-g interface connection with the radio network controller;
a measurement report sending unit, configured to send measurement report information to the radio network controller through an Iur-g interface connection after receiving a measurement report message sent by the terminal;
a handover execution unit, configured to execute a cell handover process of the terminal according to the control of the radio network controller when the radio network controller determines that the terminal needs to be handed over according to the measurement report information, and execute a relocation procedure between the core network and the radio network controller according to the control of the radio network controller when the radio network controller determines that the terminal does not need to be handed over according to the measurement report, where the measurement report information is received from the terminal after the terminal is handed over to the base station controller.
In the embodiment of the invention, the radio network controller judges whether the UE needs to be switched according to the measurement report information received through the Iur-g interface connection, and the judgment of the switching process between the relocation process and the base station controller is executed by the radio network controller, so that the switching between the relocation process and the base station controller is not concurrent.
FIG. 1 is a schematic flow chart of switching in a 2G/3G interoperation process in the prior art;
FIG. 2 is a schematic flow chart of relocation in a 2G/3G interoperation process in the prior art;
fig. 3 is a flowchart illustrating a method for implementing service switching according to an embodiment of the present invention;
FIG. 4 is a detailed flowchart of the embodiment of the present invention at the BSC side;
fig. 5 is a flowchart illustrating a specific embodiment of implementing service switching according to the present invention;
fig. 6 is a schematic interface diagram of a system for implementing service switching according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a rnc according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a base station controller according to this embodiment.
Detailed Description
Referring to fig. 3, a method for implementing service switching according to an embodiment of the present invention is applied to a communication system including 2G and 3G, and specifically includes the following steps:
step 301: and when the wireless network controller where the terminal resides determines that the terminal needs to be switched to the first base station controller, establishing Iur-g interface connection with the first base station controller.
Here, the rnc in which the terminal resides determines whether the terminal needs to be handed over to the first bsc based on the measurement report information of the terminal and/or the bsc load.
Step 302: and the radio network controller receives the measurement report information of the terminal sent by the first base station controller through an Iur-g interface connection.
Step 303: judging whether the terminal needs to be switched according to the measurement report information, and if the terminal needs to be switched, executing step 304; if it is determined that the terminal does not need to perform handover, step 305 is performed.
Wherein the measurement report information is received from the terminal after the terminal is handed over to the first base station controller. The measurement report information may include: the signal quality of the cell where the terminal is currently located and the signal quality information of the adjacent cells.
Judging whether the terminal needs to be switched according to the measurement report information can be realized by the following steps:
if the signal quality of the cell where the terminal is located is determined to be higher than the signal quality of other cells according to the measurement report information, or the signal quality of the cell where the terminal is located is determined to be higher than a set threshold value, the terminal is determined to need to be switched;
and if the signal quality of an adjacent cell of the terminal is determined to be higher than the threshold value set by the signal quality of the current cell according to the measurement report information, the adjacent cell and the current cell do not belong to the same base station controller, and the Iur-g interface connection is not established between the second base station controller to which the adjacent cell belongs and the wireless network controller, the terminal is determined not to need to be switched.
If it is determined that the terminal needs to be handed over, and the target cell and the current cell do not belong to the same base station controller, and an Iur-g interface connection is established between the second base station controller to which the neighboring cell belongs and the radio network controller, then the relocation procedure between the second base station controller and the core network can be implemented as follows:
the wireless network controller sends an enhanced relocation resource application message to a second base station controller to request the second base station controller to allocate wireless resources;
and after receiving the response of successful resource application sent by the second base station controller, the wireless network controller sends the subsequent service data flow to the second base station controller through the Iur-g interface connection between the second base station controller and the wireless network controller, and releases the Iur-g interface connection between the first base station controller and the wireless network controller.
If it is determined that the terminal needs to be switched and the target cell and the current cell belong to the same base station controller, the relocation process between the terminal and the core network can be implemented as follows:
the wireless network controller sends an enhanced relocation resource application message to a first base station controller to request the first base station controller to allocate wireless resources;
after receiving a successful response of a resource application sent by a first base station controller, the wireless network controller establishes a target Iur-g interface connection between the wireless network controller and the first base station controller;
and the data transmission between the wireless network controller and the first base station controller switches the target Iur-g interface connection and releases the original Iur-g interface connection.
Step 304: and controlling the terminal to perform cell switching, and ending.
Step 305: and executing a relocation process with the core network.
Corresponding to the embodiment shown in fig. 3, referring to fig. 4, the implementation process of the embodiment of the present invention at the base station controller side is as follows:
step 401: a first base station controller receives an enhanced relocation resource request sent by a radio network controller where a terminal resides, allocates resources for the terminal, and establishes Iur-g interface connection with the radio network controller;
step 402: after receiving the measurement report message sent by the terminal, the first base station controller sends the measurement report message to the wireless network controller through Iur-g interface connection, and executes the terminal cell switching process according to the control of the wireless network controller.
The technical solution of the present invention will be described in detail below with reference to specific examples.
The embodiment provides a method for realizing service switching through an Iur-g interface, wherein an Iur Measurement Report message is added to the Iur-g interface, a BSC sends a Measurement Report of UE to an RNC, the RNC can judge whether the UE needs to be switched according to the Measurement Report, and the judgment of the switching process between a relocation process and the BSC is completely executed by an RMC, so that the switching between the relocation process and the BSC is not concurrent, and the flow of exception handling is reduced.
Referring to fig. 5, the specific implementation process is as follows:
step 501: the RNC judges according to the measurement report of the UE and the load information of the BSC, if the UE needs to be switched from the RNC to the BSC1, the establishment of Iur-g interface connection is completed between the RNC and the BSC1 through an enhanced relocation resource application process, and subsequent service data are transmitted between the RNC and the BSC1 through an Iur-g interface.
Step 502: after the UE switches to GSM, the BSC1 sends a measurement control message to the UE.
Step 503: the UE sends a measurement report message including the signal quality RSSI of the local cell and the signal quality of the adjacent cell
Step 504: the BSC sends the measurement report information to the RNC through an Iur-g interface connection, and the RNC needs to judge according to the signal quality of the local cell and the signal quality of the adjacent cell in the measurement report.
If the signal quality of the current cell is far better than the signal quality of other cells or the signal quality of the current cell has been kept above a certain threshold for a certain time, the RNC may consider that the UE has entered the steady state, and step 505 is executed.
If the threshold for handover between GSM cells is met, the target cell for handover is not in the same BSC as the source cell, and an Iur-g interface connection exists between the RNC and the BSCn, step 506 needs to be performed.
If the target cell to be handed over is not in the same BSC as the source cell, but there is no Iur-g interface connection between the RNC and the BSCn, step 505 is executed.
If the target cell requiring handover is in the same BSC as the source cell, step 510 is still performed between the RNC and the BSC 1.
Step 505: and the relocation process between the RNC and the CN ends the process.
Step 506: RNC sends enhanced relocation resource application message to BSC to be switched to, and requests BSCn to allocate radio resource.
Step 507: the BSCn sends a resource application success response to the RNC.
Step 508: the RNC switches the connection of Iur-g from BSC1 to BSCn and subsequent traffic data is sent over the new Iur interface connection.
Step 509: and the connection between the RNC and the BSC1 is released through an Iur-g interface connection release process, and the connection between the RNC and the BSC1 is ended.
Step 510: the RNC sends an enhanced relocation resource application message to the BSC1 requesting the BSC1 to allocate radio resources.
Step 511: the BSC1 sends a resource application success response to the RNC.
Step 512: the data transmission between the RNC and BSC1 is switched from the original Iur-g interface connection to the new Iur-g interface connection.
Step 513: the connection between the RNC and the BSC1 is released through an Iur-g interface connection releasing process, and the connection between the original RNC and the BSC1 is released, and the process is finished.
Referring to fig. 6, a system for implementing service switching according to an embodiment of the present invention includes: a radio network controller 61, in which the terminal resides, and a first base station controller 62, in which,
the wireless network controller 61 is configured to establish an Iur-g interface connection with a first base station controller when it is determined that the terminal needs to be handed over to the first base station controller, receive measurement report information of the terminal sent by the first base station controller through the Iur-g interface connection, and determine whether the terminal needs to be handed over according to the measurement report information, where the measurement report information is received from the terminal after the terminal is handed over to the first base station controller; if the terminal is determined to need to be switched, controlling the terminal to switch the cell; if the terminal is determined not to need to be switched, executing a relocation process with a core network;
a first base station controller 62, configured to receive an enhanced relocation resource request sent by a radio network controller where a terminal resides, allocate resources for the terminal, and establish an Iur-g interface connection with the radio network controller; after receiving the measurement report message sent by the terminal, the first base station controller sends the measurement report message to the radio network controller through Iur-g interface connection, and executes the terminal cell switching process according to the control of the radio network controller.
Referring to fig. 7, a radio network controller according to an embodiment of the present invention includes: a connection establishing unit 71, a receiving unit 72, a judging unit 73, a handover controlling unit 74, and a relocation controlling unit 75. Wherein,
a connection establishing unit 71, configured to establish an Iur-g interface connection with a first base station controller when determining that the terminal needs to be handed over to the first base station controller;
a receiving unit 72, configured to receive, through an Iur-g interface, measurement report information of the terminal sent by a first base station controller, where the measurement report information is received from the terminal after the terminal is handed over to the first base station controller;
a determining unit 73, configured to determine whether the terminal needs to be switched according to the measurement report information;
a handover control unit 74, configured to control the terminal to perform cell handover if it is determined that the terminal needs handover;
a relocation control unit 75, configured to perform a relocation procedure with the core network if it is determined that the terminal does not need to perform handover.
The determining unit 73 is configured to determine that the terminal needs to perform handover if it is determined that the signal quality of the cell in which the terminal is currently located is higher than the signal quality of other cells according to the measurement report information, or it is determined that the signal quality of the cell in which the terminal is currently located is higher than a set threshold; and if the signal quality of an adjacent cell of the terminal is determined to be higher than the threshold value set by the signal quality of the current cell according to the measurement report information, the adjacent cell and the current cell do not belong to the same base station controller, and the Iur-g interface connection is not established between the second base station controller to which the adjacent cell belongs and the wireless network controller, the terminal is determined not to need to be switched.
The relocation control unit 75 is configured to send an enhanced relocation resource application message to a second base station controller to request the second base station controller to allocate radio resources if it is determined that the terminal needs to be handed over, and the target cell and the current cell do not belong to the same base station controller, and an Iur-g interface connection has been established between the second base station controller to which the neighboring cell belongs and the radio network controller; after receiving the response of successful resource application sent by the second base station controller, the subsequent service data flow is sent to the second base station controller through the Iur-g interface connection between the second base station controller and the wireless network controller, and the Iur-g interface connection between the first base station controller and the wireless network controller is released.
The handover control unit 74 is configured to send an enhanced relocation resource application message to the first base station controller to request the first base station controller to allocate radio resources if it is determined that the terminal needs to be handed over and the target cell and the current cell belong to the same base station controller; after receiving a successful response of the resource application sent by the first base station controller, establishing a target Iur-g interface connection between the wireless network controller and the first base station controller; and the data transmission switching target Iur-g interface connection between the first base station controller and the first base station controller is realized, and the original Iur-g interface connection is released.
The measurement report information includes: the signal quality of the cell where the terminal is currently located and the signal quality information of the adjacent cells.
Referring to fig. 8, the present embodiment provides a base station controller, including: a resource allocation unit 81 and a measurement report transmission unit 82. Wherein,
a resource allocation unit 81, configured to receive an enhanced relocation resource request sent by a radio network controller where a terminal resides, allocate resources for the terminal, and establish an Iur-g interface connection with the radio network controller;
a measurement report sending unit 82, configured to send measurement report information to the radio network controller through an Iur-g interface connection after receiving a measurement report message sent by the terminal;
and the switching execution unit is used for executing the switching process of the terminal cell according to the control of the wireless network controller.
In the embodiment of the invention, an Iurg Measurement Report message is additionally sent in the Iur-g interface connection, namely the Measurement Report of the UE is sent to the RNC by connecting the BSC with the Iur-g interface, the RNC can judge whether the UE needs to be switched according to the Measurement Report, and the judgment of the switching process between the relocation process and the BSC is completely executed by the RNC, so that the switching between the relocation process and the BSC is not concurrent, and the flow of abnormal processing is reduced. Moreover, the RNC coordinates and processes the time sequence relationship of the relocation and the switching in a unified way, thereby ensuring the simplification of the flow.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (14)
1. A method for realizing service switching is applied to a communication system containing 2G and 3G, and is characterized by comprising the following steps:
when a wireless network controller where a terminal resides determines that the terminal needs to be switched to a first base station controller, establishing Iur-g interface connection with the first base station controller;
the wireless network controller receives measurement report information of the terminal sent by a first base station controller through an Iur-g interface connection, and judges whether the terminal needs to be switched or not according to the measurement report information, wherein the measurement report information is received from the terminal after the terminal is switched to the first base station controller;
if the terminal is determined to need to be switched, controlling the terminal to switch the cell;
if the terminal is determined not to need to be switched, a relocation process is executed between the terminal and the core network.
2. The method of claim 1, wherein determining whether the terminal needs to perform handover according to the measurement report information comprises:
if the signal quality of the cell where the terminal is located is determined to be higher than the signal quality of other cells according to the measurement report information, or the signal quality of the cell where the terminal is located is determined to be higher than a set threshold value, the terminal is determined to need to be switched;
and if the signal quality of an adjacent cell of the terminal is determined to be higher than the threshold value set by the signal quality of the current cell according to the measurement report information, the adjacent cell and the current cell do not belong to the same base station controller, and the Iur-g interface connection is not established between the second base station controller to which the adjacent cell belongs and the wireless network controller, the terminal is determined not to need to be switched.
3. The method according to claim 1 or 2, wherein if it is determined that the terminal needs to perform handover and the target cell and the current cell do not belong to the same base station controller, an Iur-g interface connection is established between the second base station controller to which the target cell belongs and the radio network controller,
executing a relocation process with the core network, including:
the wireless network controller sends an enhanced relocation resource application message to a second base station controller to request the second base station controller to allocate wireless resources;
and after receiving the response of successful resource application sent by the second base station controller, the wireless network controller sends the subsequent service data flow to the second base station controller through the Iur-g interface connection between the second base station controller and the wireless network controller, and releases the Iur-g interface connection between the first base station controller and the wireless network controller.
4. The method according to claim 1 or 2, if it is determined that the terminal needs to perform handover and the target cell and the current cell belong to the same base station controller, performing a relocation procedure with the core network, comprising:
the wireless network controller sends an enhanced relocation resource application message to a first base station controller to request the first base station controller to allocate wireless resources;
after receiving a successful response of a resource application sent by a first base station controller, the wireless network controller establishes a target Iur-g interface connection between the wireless network controller and the first base station controller;
and the data transmission between the wireless network controller and the first base station controller switches the target Iur-g interface connection and releases the original Iur-g interface connection.
5. The method of claim 1, wherein the rnc where the terminal resides determines whether the terminal needs to handover to the first bsc based on measurement report information of the terminal and/or bsc load.
6. The method of claim 1, wherein the measurement report information comprises: the signal quality of the cell where the terminal is currently located and the signal quality information of the adjacent cells.
7. A method for realizing service switching is applied to a communication system containing 2G and 3G, and is characterized by comprising the following steps:
a first base station controller receives an enhanced relocation resource request sent by a radio network controller where a terminal resides, allocates resources for the terminal, and establishes Iur-g interface connection with the radio network controller;
after receiving the measurement report message sent by the terminal, the first base station controller sends the measurement report message to the radio network controller through Iur-g interface connection, executes the terminal cell switching process according to the control of the radio network controller when the radio network controller judges that the terminal needs to be switched according to the measurement report message, and executes the relocation process between the control of the radio network controller and a core network when the radio network controller judges that the terminal does not need to be switched according to the measurement report, wherein the measurement report message is received from the terminal after the terminal is switched to the first base station controller.
8. A system for implementing service switching, the system comprising: a radio network controller in which the terminal resides, and a first base station controller, wherein,
the wireless network control is used for establishing Iur-g interface connection with a first base station controller when the terminal is determined to need to be switched to the first base station controller, receiving measurement report information of the terminal sent by the first base station controller through the Iur-g interface connection, and judging whether the terminal needs to be switched according to the measurement report information, wherein the measurement report information is received from the terminal after the terminal is switched to the first base station controller; if the terminal is determined to need to be switched, controlling the terminal to switch the cell; if the terminal is determined not to need to be switched, executing a relocation process with a core network;
the first base station controller is used for receiving an enhanced relocation resource request sent by a radio network controller where a terminal resides, allocating resources for the terminal and establishing Iur-g interface connection with the radio network controller; after receiving the measurement report message sent by the terminal, the first base station controller sends the measurement report message to the wireless network controller through Iur-g interface connection, and executes the terminal cell switching process according to the control of the wireless network controller.
9. A radio network controller, comprising:
the connection establishing unit is used for establishing Iur-g interface connection with the first base station controller when the terminal is determined to need to be switched to the first base station controller;
a receiving unit, configured to receive, through an Iur-g interface, measurement report information of the terminal sent by a first base station controller, where the measurement report information is received from the terminal after the terminal is handed over to the first base station controller;
a judging unit, configured to judge whether the terminal needs to be switched according to the measurement report information;
a switching control unit, configured to control the terminal to perform cell switching if it is determined that the terminal needs to perform switching;
and the relocation control unit is used for executing the relocation process with the core network if the terminal is determined not to need to be switched.
10. The controller according to claim 9, wherein the determining unit is configured to determine that the terminal needs to perform handover if it is determined that the signal quality of the cell in which the terminal is currently located is higher than the signal qualities of other cells according to the measurement report information, or it is determined that the signal quality of the cell in which the terminal is currently located is higher than a set threshold; and if the signal quality of an adjacent cell of the terminal is determined to be higher than the threshold value set by the signal quality of the current cell according to the measurement report information, the adjacent cell and the current cell do not belong to the same base station controller, and the Iur-g interface connection is not established between the second base station controller to which the adjacent cell belongs and the wireless network controller, the terminal is determined not to need to be switched.
11. The controller according to claim 9, wherein the relocation control unit is configured to send an enhanced relocation resource application message to the second base station controller to request the second base station controller to allocate radio resources if it is determined that the terminal needs to be handed over, and the target cell and the current cell do not belong to the same base station controller, and an Iur-g interface connection has been established between the second base station controller to which the target cell belongs and the radio network controller; after receiving the response of successful resource application sent by the second base station controller, the subsequent service data flow is sent to the second base station controller through the Iur-g interface connection between the second base station controller and the wireless network controller, and the Iur-g interface connection between the first base station controller and the wireless network controller is released.
12. The controller according to claim 9, wherein the handover control unit is configured to send an enhanced relocation resource application message to the first base station controller to request the first base station controller to allocate radio resources if it is determined that the terminal needs to perform handover and the target cell and the current cell belong to the same base station controller; after receiving a successful response of the resource application sent by the first base station controller, establishing a target Iur-g interface connection between the wireless network controller and the first base station controller; and the data transmission switching target Iur-g interface connection between the first base station controller and the first base station controller is realized, and the original Iur-g interface connection is released.
13. The controller of claim 9, wherein the measurement report information comprises: the signal quality of the cell where the terminal is currently located and the signal quality information of the adjacent cells.
14. A base station controller, comprising:
a resource allocation unit, configured to receive an enhanced relocation resource request sent by a radio network controller where a terminal resides, allocate resources for the terminal, and establish an Iur-g interface connection with the radio network controller;
a measurement report sending unit, configured to send measurement report information to the radio network controller through an Iur-g interface connection after receiving a measurement report message sent by the terminal;
a handover execution unit, configured to execute a cell handover process of the terminal according to the control of the radio network controller when the radio network controller determines that the terminal needs to be handed over according to the measurement report information, and execute a relocation procedure between the core network and the radio network controller according to the control of the radio network controller when the radio network controller determines that the terminal does not need to be handed over according to the measurement report, where the measurement report information is received from the terminal after the terminal is handed over to the base station controller.
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| CN2009100937992A CN102036331B (en) | 2009-09-28 | 2009-09-28 | Method, system and device for realizing service handover |
| PCT/CN2010/001508 WO2011035557A1 (en) | 2009-09-28 | 2010-09-28 | Method, system and apparatus for implementing service handover |
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| CN2009100937992A CN102036331B (en) | 2009-09-28 | 2009-09-28 | Method, system and device for realizing service handover |
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| CN100518377C (en) * | 2006-06-12 | 2009-07-22 | 普天信息技术研究院 | Hard switchover method for radio communication |
| CN100531464C (en) * | 2006-08-03 | 2009-08-19 | 中兴通讯股份有限公司 | Method of implementing high speed downlink sharing channel co-frequency cell handoff |
| CN100581292C (en) * | 2006-08-29 | 2010-01-13 | 华为技术有限公司 | Inter-system switch and multimedia fallback parallel processing method |
| GB2445987B (en) * | 2007-01-19 | 2011-09-28 | Motorola Inc | Relocation in a cellular communication system |
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