CN100456892C - A cell multimedia broadcasting service migration method and wireless network controller - Google Patents
A cell multimedia broadcasting service migration method and wireless network controller Download PDFInfo
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Abstract
This invention discloses one area multi-media broadcast business transfer method and wireless network controller, which establishes CMB business between UE and SRNC and comprises the following steps: a, when area update with transfer, SRNC sends flow media business message into DRNC; b, DRNC establishes CMB business between UE and this DRNC according to the flow media business message. This invention method and device can ensure CMB business continuity in updating and transferring of the area.
Description
Technical field
The present invention relates to the 3G (Third Generation) Moblie technical field, particularly relate to a kind of method and radio network controller of cell multimedia broadcasting service migration.
Background technology
Introduced multi-medium multi-packet broadcasting broadcasting (MBMS) carrying and professional among third generation co-operative project (3GPP) version 6 (R6), purpose is to insert broadcasting and the multicast function that realizes Streaming Media in (WCDMA) network in Wideband Code Division Multiple Access (WCDMA).But with do not finish as yet before the MBMS corresponding protocol standard mesh, releasing commercial product also needs one long period.At this present situation, on the R99 before the R6, R4, R5 system platform, cell multimedia broadcast (CMB) has been proposed, CMB is professional by playing stream media program on common signal channel, has realized the broadcasting and the multicast function of Streaming Media in the WCDMA network.
Fig. 1 is the schematic diagram of CMB service implementation method.As shown in Figure 1, the process of setting up of CMB business may further comprise the steps:
Step 101: for subscriber equipment (UE) is set up packet switching (PS) business.
UE initiates Radio Resource control (RRC) establishment of connection process, and after the RRC connection was set up and finished, UE was in cell private channel (CELL-DCH) state; Set up the RAB (RAB) between UE and the core network (CN) then, and activate packet data protocol (PDP).
Step 102: the transmission control protocol (TCP) that the application layer control agent (CA) in the radio network controller (RNC) is set up between RNC and the UE connects.
The real time streaming protocol (rtsp) that step 103:CA sets up between RNC and the UE connects.RTSP is carried by TCP, connects at RTSP and sets up in the process, and UE sends in description (Describe) message of the RTSP of CA and carries the channel that UE selects.
Step 104:CA sends the reshuffle Indication message of dedicated channel to forward access channel (D2F) to radio network controller applying portion (RNCAP), request is configured to cell forward access channel (CELL-FACH) state with UE, carries the channel that the user selects in this message.
Channel computer general terrestrial access network (UTRAN) Radio Network Temporary Identifier (U-RNTI) that step 105:RNCAP selects according to the user, this U-RNTI is distributed to UE, and finish D2F and reshuffle, reshuffle finish after, UE is in the CELL-FACH state.
Step 106:UE selects auxiliary Common Control Channel (SCCPCH) according to the U-RNTI that distributes, and receives the stream medium data of broadcasting from the FACH of this SCCPCH carrying, and starts the broadcast of flow-medium performance.
The process of setting up of CMB business comprises that TCP connects and the RTSP establishment of connection, the TCP connection be connected with RTSP be in stable state after, the streaming media service context is kept among the CA, CA sends to RNCAP with the streaming media service context; Finish professional foundation of CMB, after promptly the CMB business was in stable state, the CA example was released.Wherein, the streaming media service context is to be connected with TCP and the information of RTSP join dependency.
When the sub-district of UE took place to upgrade, if the service wireless network controller (SRNC) of UE becomes another one RNC from a RNC, then triggering cell was upgraded and is followed migration.Fig. 2 follows the schematic diagram of migration for cell update.As shown in Figure 2, cell update follows transition process may further comprise the steps:
Step 201:SRNC sends to CN and requires migration (RELOCATION REQUIRED) message, carries the join dependency context in the message, comprises Signaling Radio Bearer (SRB) parameter, RAB parameter, Radio Link control (RLC) parameter.
Step 202:CN sends migration request (RELOCATION REQUEST) message to floating radio network controller (DRNC), carries the join dependency context in the message, requires DRNC to carry out migration and prepares, and promptly is ready to move required resource.
Step 203:DRNC sends migration request to CN and replys (RELOCATION REQUESTACKNOWLEDGE) message, and the required resource of notice CN migration is ready to.
Step 204:CN sends migration order (RELOCATION COMMAND) message to SRNC, and notice SRNC can move.
Step 205:SRNC sends migration to DRNC and carries out (RELOCATION COMMIT) message, carries out data forwarding, and after data forwarding was finished, SRNC no longer issued user face data to UE.
Step 206:DRNC sends migration to CN and detects (RELOCATION DETECT) message, notice CN, and DRNC has finished set-up procedure, and CN no longer issues user face data to SRNC subsequently, then issues user face data to DRNC.
Step 207:UE finish with DRNC synchronously after, DRNC sends migration to CN and finishes (RELOCATION COMPLETE) message, moves successfully.
Follow transition process by above-mentioned cell update, SRNC has arrived the join dependency context transfer of UE among the DRNC, and DRNC is that UE distributes the required resource of access according to described join dependency context, and the wireless connections of UE are lasted till DRNC from SRNC.But for the CMB business, after the migration, RSTP connects and is connected interruption with TCP, causes the CMB service disconnection.Owing to there is not the streaming media service context of UE in DRNC, thereby DRNC can't initiatively rebulid CMB, can only be initiated the process of setting up of CMB by UE again, influenced the continuity that the Streaming Media broadcast program is play among the UE.
Summary of the invention
In view of this, embodiments of the invention provide a kind of method of cell multimedia broadcasting service migration, follow the continuity of CMB business in the migration to guarantee cell update.
In addition, embodiments of the invention also provide a kind of radio network controller.
The method of the cell multimedia broadcasting service migration that the embodiment of the invention provides establishes the CMB business between UE and SRNC, described method comprises:
A) follow when migration carrying out cell update, SRNC sends to DRNC with the streaming media service context;
B) DRNC sets up CMB business between UE and this DRNC according to described streaming media service context.
Described step a) comprises:
A1) RNCAP among the SRNC sends RELOCATION REQUIRED message to core network CN, carries the streaming media service context in the message;
When a2) CN receives described RELOCATION REQUIRED message, send RELOCATION REQUEST message, carry described streaming media service context in the message to DRNC.
Described streaming media service context comprises RTSP link information and TCP link information; Described RTSP link information comprises the session identification (Session ID) of RTSP entity, the sequence number of RTSP entity; Described TCP link information comprises sequence number to be received, sequence number, local terminal Internet Protocol (IP) address, peer IP address, Local port number and peer port number to be sent.
The radio network controller that the embodiment of the invention provides comprises:
Be used to set up the CA entity and the RNCAP entity of CMB business;
Described CA entity is further used for preserving the streaming media service context;
When this RNC was SRNC, described RNCAP entity was further used for following in the transition process at cell update, obtained the streaming media service context from described CA entity, and described streaming media service context is sent to DRNC; And/or
When this RNC was DRNC, described RNCAP entity was further used for receiving the streaming media service context that SRNC sends, and DRNC is further used for setting up the CMB business according to described streaming media service context.
Compared with prior art, embodiments of the invention are by following in the transition process at cell update, by SRNC the streaming media service context of UE is sent to DRNC, rebulid the CMB business by DRNC according to described streaming media service context, thereby guaranteed the continuity of CMB business.
Description of drawings
Fig. 1 is the schematic diagram of CMB service implementation method in the prior art;
Fig. 2 follows the schematic diagram of migration for cell update in the prior art;
Fig. 3 is the flow chart of an embodiment of the method for CMB business migration of the present invention;
Fig. 4 obtains the contextual flow chart of streaming media service for RNCAP in the embodiments of the invention by the mode of inquiry from CA.
Embodiment
The present invention will be described in detail in conjunction with embodiments of the invention below with reference to accompanying drawing.
The continuity of CMB business need DRNC initiatively to rebulid the CMB business, and DRNC rebulids the CMB business, then needs to obtain the streaming media service context of UE when guaranteeing that UE enters another one RNC from a RNC.In an embodiment of the present invention, when cell update is followed migration, organize required streaming media service context by SRNC, and this streaming media service context is sent to DRNC, DRNC finishes the reconstruction of CMB business according to described streaming media service context, has guaranteed the continuity of CMB business.
As shown in Figure 3, an embodiment of the method for cell multimedia broadcasting service migration of the present invention may further comprise the steps:
Step 301: follow when migration carrying out cell update, SRNC sends to DRNC with the streaming media service context;
Step 302:DRNC sets up CMB business between UE and this DRNC according to described streaming media service context.
In step 301, the RNCAP among the SRNC will move required streaming media service context and send to CN by RELOCATION REQUIRED message; When CN receives described RELOCATIONREQUIRED message, this streaming media service context is sent to DRNC by RELOCATION REQUEST message.
Before step 301, the RNCAP among the SRNC judges whether this RNCAP preserves the streaming media service context, if then execution in step 301), otherwise, from CA, obtain behind the streaming media service context execution in step 301 again by the mode of inquiry).
The process of setting up of CMB business comprises that TCP connects and the RTSP establishment of connection, the TCP connection be connected with RTSP be in stable state after, the streaming media service context is kept among the CA, CA sends to RNCAP with the streaming media service context; Finish professional foundation of CMB, after promptly the CMB business was in stable state, the CA example was released.Therefore, carrying out if the CMB business has been in stable state, then having preserved the streaming media service context among the RNCAP before cell update follows migration, RNCAP can directly send to DRNC with this streaming media service context.
If before cell update is followed migration, the CMB business is not to be in stable state, does not then also have relevant streaming media service context among the RNCAP.In this case, RNCAP comes to obtain the streaming media service context by the mode of inquiry from CA.
As shown in Figure 4, RNCAP obtains the streaming media service context and may further comprise the steps by the mode of inquiry from CA:
RNCAP among the step 401:SRNC sends Radio Link control (RLC) state transition query requests (RLC_STATE_RELOC_QUERY_REQ) message, acquisition request streaming media service context to CA;
After step 402:CA receives described RLC_STATE_RELOC_QUERY_REQ message, judge RTSP connects to be connected whether be in stable state with TCP, connect at definite RTSP and to be connected with TCP when being in stable state, execution in step 403, in definite RTSP connection or TCP connection is not when being in stable state, discharge the CMB business, and process ends;
Step 403:CA sends RLC_STATE_RELOC_QUERY_CNF message to RNCAP, carries described streaming media service context in the message.
In the step 402, only connect and be connected with TCP when being in stable state, just preserve the streaming media service context among the CA, the process of transmitting in the ability execution in step 403 at RTSP.Connect or TCP is not when being in stable state at RTSP, illustrate that RTSP connects or TCP does not also set up and finishes, in this case, migration is failed, and can discharge the CMB business earlier, initiate again by UE again and DRNC between the CMB business set up process.Certainly, also can wait for RTSP and TCP set up finish after, inquiry again after promptly waiting for a period of time, re-executes step 401 again.
After DRNC receives the streaming media service context, can set up CMB business between UE and this DRNC according to described streaming media service context.Wherein, the streaming media service context comprises RTSP link information and TCP link information.The RTSP link information is the required information of using of RTSP connection reconstruction, comprising: the Session ID of RTSP entity, the sequence number of RTSP entity.The TCP link information is the required information of using of TCP connection reconstruction, comprising: sequence number to be received, sequence number to be sent, local terminal IP address, peer IP address, Local port number and peer port number.
According to the description of above embodiment to method of the present invention, the embodiment of radio network controller of the present invention is described below.
The radio network controller of embodiments of the invention comprises the CA entity and the RNCAP entity that are used to set up the CMB business.Described CA entity is further used for preserving the streaming media service context.At this
When RNC was SRNC, described RNCAP entity was further used for following in the transition process at cell update, obtained the streaming media service context from described CA entity, and described streaming media service context is sent to DRNC.When this RNC was DRNC, described RNCAP entity was further used for receiving the streaming media service context that SRNC sends; DRNC is used for setting up the CMB business according to described streaming media service context.
As previously mentioned, the RNCAP entity obtains the streaming media service context and comprises dual mode from the CA entity: a kind ofly obtain the streaming media service context by the mode of inquiry from the CA entity for the RNCAP entity; Another for connect at TCP be connected with RTSP be in stable state after, the CA entity directly sends to the RNCAP entity with the streaming media service context.
Wherein, described streaming media service context comprises RTSP link information and TCP link information; Described RTSP link information comprises the Session ID of RTSP entity, the sequence number of RTSP entity; Described TCP link information comprises sequence number to be received, sequence number, local terminal IP address, peer IP address, Local port number and peer port number to be sent.
It will be appreciated by those skilled in the art that above-mentioned execution mode only works the effect of the present invention of explaining, and not should be understood to any restriction that it is made.
Claims (8)
1. the method for a cell multimedia broadcasting service migration establishes cell multimedia broadcast CMB business between user equipment (UE) and service wireless network controller SRNC, it is characterized in that, follows when migration carrying out cell update, and described method comprises:
A) the radio network controller applying portion RNCAP among the SRNC sends Radio Link control RLC state transition inquiry request message to application layer control agent CA;
B) after CA receives described RLC state transition inquiry request message, judge that real-time streaming protocol RTSP connects and be connected whether be in stable state, be connected when being in stable state execution in step c in definite RTSP connection with TCP) with transmission control protocol TCP; In definite RTSP connection or TCP connection is not when being in stable state, to re-execute step a), perhaps discharges the professional and process ends of CMB;
C) CA sends RLC state transition acknowledgment of your inquiry message to RNCAP, carries the streaming media service context that this CA preserves in the message;
D) RNCAP sends to core network CN and requires migration RELOCATION REQUIRED message, carries the streaming media service context in the message;
When e) CN receives described RELOCATION REQUIRED message, send migration request RELOCATION REQUEST message, carry described streaming media service context in the message to floating radio network controller DRNC;
F) DRNC sets up CMB business between UE and this DRNC according to described streaming media service context.
2. the method for claim 1 is characterized in that, further comprises before the step a):
RNCAP judges whether this RNCAP preserves the streaming media service context, if, execution in step d then), otherwise execution in step is a).
3. method as claimed in claim 2 is characterized in that, further comprises before the step a):
The TCP between UE and the SRNC connect be connected with RTSP be in stable state after, the CA of SRNC sends to RNCAP with the streaming media service context of this CA preservation.
4. as each described method in the claim 1 to 3, it is characterized in that:
Described streaming media service context comprises RTSP link information and TCP link information;
Described RTSP link information comprises the session identification Session ID of RTSP entity, the sequence number of RTSP entity;
Described TCP link information comprises sequence number to be received, sequence number, local terminal Internet Protocol IP address, peer IP address, Local port number and peer port number to be sent.
5. radio network controller is characterized in that:
Comprise the application layer control agent CA entity and the radio network controller applying portion RNCAP entity that are used to set up cell multimedia broadcast CMB business;
Described CA entity is further used for preserving the streaming media service context;
When this radio network controller is service wireless network controller SRNC, described RNCAP entity is further used for following in the transition process at cell update, from described CA entity, obtain the streaming media service context, and described streaming media service context is sent to floating radio network controller DRNC; And/or
When this radio network controller was DRNC, described RNCAP entity was further used for receiving the streaming media service context that SRNC sends, and DRNC is further used for setting up the CMB business according to described streaming media service context.
6. radio network controller as claimed in claim 5 is characterized in that:
Described RNCAP entity obtains the streaming media service context by the mode of inquiry from the CA entity.
7. radio network controller as claimed in claim 5 is characterized in that:
Described RNCAP entity directly receives the streaming media service context that the CA entity sends.
8. as claim 5,6 or 7 described radio network controllers, it is characterized in that:
Described streaming media service context comprises real-time streaming protocol RTSP link information and transmission control protocol TCP link information;
Described RTSP link information comprises the session identification Session ID of RTSP entity, the sequence number of RTSP entity;
Described TCP link information comprises sequence number to be received, sequence number, local terminal Internet Protocol IP address, peer IP address, Local port number and peer port number to be sent.
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| CN101583168B (en) * | 2008-05-16 | 2013-06-05 | 华为技术有限公司 | Switching method, switching system and wireless network controller in wireless network |
| CN101772147B (en) * | 2008-12-29 | 2012-05-23 | 大唐移动通信设备有限公司 | Method and system for establishing MBMS service synchronous bearer |
| CN102026211B (en) * | 2010-11-23 | 2014-08-13 | 中兴通讯股份有限公司 | Method and device for generating data service migration list |
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Effective date of registration: 20211223 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: xFusion Digital Technologies Co., Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
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