WO2011088732A1 - 基于ip多媒体子系统的彩像实现方法、装置及系统 - Google Patents

基于ip多媒体子系统的彩像实现方法、装置及系统 Download PDF

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Publication number
WO2011088732A1
WO2011088732A1 PCT/CN2010/080545 CN2010080545W WO2011088732A1 WO 2011088732 A1 WO2011088732 A1 WO 2011088732A1 CN 2010080545 W CN2010080545 W CN 2010080545W WO 2011088732 A1 WO2011088732 A1 WO 2011088732A1
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WIPO (PCT)
Prior art keywords
color image
called
call
crs
calling
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PCT/CN2010/080545
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English (en)
French (fr)
Inventor
李世涛
Original Assignee
中兴通讯股份有限公司
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Publication of WO2011088732A1 publication Critical patent/WO2011088732A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/42025—Calling or Called party identification service
    • H04M3/42034—Calling party identification service
    • H04M3/42042—Notifying the called party of information on the calling party
    • H04M3/42051—Notifying the called party of information on the calling party where the notification is included in the ringing tone

Definitions

  • the present invention relates to the field of communications, and in particular to a method, device and system for implementing a color image based on an IP multimedia subsystem. Background technique
  • FIG. 1 is a structural diagram of deploying a color image service in an IMS network in the prior art.
  • the method includes: a calling UE1 (101), a calling call session control function (S-CSCF) (102), and an application server of the calling party providing a color image service (Customized Ringing) Signal Application Server (CRS AS) ( 103 ), called S-CSCF ( 104 ), and called UE2 ( 105 ), when the called user saves the configuration policy of the color image on the network, generally It can be saved on the CRS AS ( 106 ) of the called party.
  • the Early session model is defined in RFC 3959, which defines an early session description protocol (SDP) to represent the early media Session Description Protocol (SDP) information to distinguish between normal calls. SDP information.
  • SDP early session description protocol
  • FIG. 2 is one of the flowcharts of the related art for playing a color image in an early conversation manner.
  • the calling user UE1 and the called user UE2 have resources available before the call, that is, there is no need to negotiate the resource reservation.
  • the S-CSCF on the called side is not used as a separate The entity is displayed. As shown in FIG.
  • playing the color image in the early session mode mainly includes the following steps: Step 201: The calling user UE1 initiates a call request through the IMS network, where the CRS identifier is carried, indicating that the current request is Color image service; Step 202, after receiving the above call request, the calling S-CSCF triggers the call to the calling CRS AS according to the signing rule of the calling UE1 for the color image; Step 203: The calling CRS AS inserts the capability identifier supporting the early session mode into the call request to indicate that the calling network supports the early session mode, and returns the call request to the calling S-CSCF. Step 204, the calling S-CSCF will The call request is sent to the called user UE2.
  • Step 205 Since the resource reservation negotiation is not required, the called user UE2 directly responds to the 180 ringing response after receiving the call request, starts a timer, does not play the local ringtone, wherein, The 180 response message also carries a capability identifier supporting the early session mode, indicating that the called side also supports the early session mode; Step 206, after the calling S-CSCF receives the 180 response message, ⁇ !
  • the caller CRS AS is called to the calling CRS AS, and the calling CRS AS knows that the called user UE2 supports the early session mode; Step 207, the calling CRS AS returns a 180 response message to the calling S-CSCF; Step 208, the calling S-CSCF The 180 response message is routed to the calling user UE1; Step 209, after the calling user UE1 learns that the called user supports the early session mode, sends a temporary message (PRACK) to the called user; Step 210, the calling party S-CSCF ⁇ 1 The temporary message (PRACK) is triggered to the calling CRS AS; Step 211, after receiving the temporary message (PRACK), the calling CRS AS inserts the early session SDP request describing the color image media message into the temporary message and returns to the calling party S.
  • PRACK temporary message
  • Step 212 the calling S-CSCF sends the temporary message to the called user UE2; Step 213, after receiving the temporary message, the called user UE2 replies to the calling S-CSCF with a temporary message response, and carries the early The media SDP replies, indicating that the called user UE2 accepts the color image service of the calling party; Step 214, the calling S-CSCF triggers the temporary message response carrying the early session SDP response to the calling CRS AS, and the calling CRS AS according to the early session SDP Negotiate the media gateway The color image medium is played for the called party; Step 215, the calling CRS AS deletes the early session SDP response, and returns the temporary message response to the calling S-CSCF; Step 216, the calling S-CSCF routes the temporary message response to the calling user.
  • Step 217 When the called user UE2 answers the above call request, send a 200 OK response to the calling party; Step 218, the calling S-CSCF triggers the 200 OK response to the calling CRS AS, the calling CRS
  • the AS notifies the media gateway to end the playing of the color image; Step 219, the calling CRS AS returns a 200 OK response to the calling S-CSCF; Step 220, the calling S-CSCF routes the 200 OK response to the calling user UE1; Step 221 ⁇ 222.
  • the calling user UE1 sends an ACK to the called user UE2 to indicate that a 200 OK response is received.
  • the called user may need to refuse to accept the color image service in the call request, but in the above process, the called user cannot implement the color image service in the rejected call request, thereby reducing the user. Experience.
  • a primary object of the present invention is to provide an IMS-based color image implementation method, apparatus, and system, to at least solve the problem that the called user cannot reject the color image service in the call request.
  • an IMS-based color image implementation method including: a called CRS AS to which a called user terminal belongs receives a call request routed from a called network, where the call request carries Indicates the color image identifier of the current call with the color image service; the called CRS AS determines whether to reject the color image service of the current call, and if so, deletes the color image identifier carried in the call request, and sends the deleted color image to the called user terminal. Like the call request after the identity.
  • a color image service application server including: a storage module, a receiving module, a determining module, an executing module, and a sending module.
  • the storage module is configured to store a color image playing policy of the called user terminal
  • the receiving module is configured to receive a call request for the called user terminal, where the call request carries a color indicating that the current call has a color image service.
  • a determining module configured to determine, according to the color image playing policy stored by the storage module, whether to accept the color image service of the current call; and an executing module, configured to delete the call if the determining module determines to reject the color image service of the current call
  • the color image identifier that is requested to be carried the sending module, configured to send a call request processed by the execution module to the called user terminal.
  • a color image realization system based on an IP multimedia subsystem including: a calling network and a called network.
  • the calling network is configured to send a call request to the called network, where the call request carries a color image identifier indicating that the current call has a color image service;
  • the called network includes: the called CRS AS, configured to Presetting the color image playing policy of the called user terminal, determining whether to accept the color image service of the current call, if yes, forwarding the call request, otherwise, deleting the color image identifier in the call request and then transmitting; the called user terminal For receiving a call request sent by the called CRS AS, if the call request does not carry the color image identifier, the current call is processed as a call with the color image service; otherwise, the current call is used as a call without the color image service. Process it.
  • the color image playing policy of the called user is set in the CRS AS to which the called user belongs.
  • the called CRS AS determines whether the called user accepts the current calling color according to the color image playing policy. If the service is rejected, the color image identifier in the call request is deleted, so that the called user terminal can reject the color image service in the call request, and the related art can not reject the color image in the call according to the needs of the user. Business problems, which in turn improve the user experience.
  • FIG. 1 is a structural diagram of a color image implementation in the related art
  • FIG. 2 is a flowchart of color image playback in the related art
  • FIG. 3 is a schematic structural diagram of an IMS-based color image realization system according to an embodiment of the present invention
  • 4 is a schematic structural diagram of a CRS AS according to an embodiment of the present invention
  • FIG. 1 is a structural diagram of a color image implementation in the related art
  • FIG. 2 is a flowchart of color image playback in the related art
  • FIG. 3 is a schematic structural diagram of an IMS-based color image realization system according to an embodiment of the present invention
  • 4 is a schematic structural diagram of a CRS AS according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for implementing an IMS-based color image according to an embodiment of the present invention
  • FIG. 6 is a flowchart according to Embodiment 1 of the present invention
  • Figure 7 is a flow chart of Embodiment 2 of the present invention
  • Figure 8 is a flow chart according to Embodiment 3 of the present invention
  • Figure 9 is a flow chart showing a fourth embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an IMS-based color image implementation system according to an embodiment of the present invention.
  • the system includes: a calling network 10 and a called network 20.
  • the calling network 10 is configured to send a call request to the called network 20 to the called user terminal 204, wherein the call request carries a color image identifier indicating that the current call has a color image service, and the composition and the existing
  • the technically similar including: the calling S-CSCF, the calling CRS-AS, etc., are not described in detail in the embodiment of the present invention;
  • the composition of the called network 20 is similar to the prior art, and mainly includes: the called CRS AS 202.
  • the called user terminal 204 and the called S-CSCF, etc., the called network 20 is different from the related technology in that the called CRS AS is provided with the color image playing policy of the called user terminal 204, and the called network 20 is receiving.
  • the call request to the calling network 10 is made, the call request is routed to the called CRS AS 202, and the called CRS AS 202 determines whether the called user terminal 204 accepts according to the preset color image playing policy of the called user terminal.
  • the color image service of the current call if yes, forward the call request, otherwise, the color image identifier in the call request is deleted and then sent; and the called user terminal 204 receives the call request, if received Call request does not carry the logo color image, the current call as a call without color image service for processing; otherwise, the current call as a call with a color image service for processing, playback execution process color image.
  • the called user terminal 204 is further configured to return a response message of the call request. If the called user terminal 204 supports the early session, the response message carries the indicated called user terminal. 204 supports the capability identification of the early session.
  • the called CRS AS 202 Since the called CRS AS 202 is provided with a color image playing policy, the response message is first routed to the called CRS AS 202 before the response message is sent to the calling network 10. Therefore, the called CRS AS 202 is further configured to: after receiving the response message, determine, according to the preset color image playing policy of the called user terminal 204, whether the called user terminal allows the current call to play the color image, and if so, The calling network 10 forwards the response message. Otherwise, the capability identifier in the response message is deleted and then sent to the calling network 10. Alternatively, the called user terminal 204 may also indicate in the sent response message whether it accepts the color image service of the current call.
  • the called user terminal 204 determines to reject the color image service of the current call, and does not carry the color image identifier in the sent response message; otherwise, the called user terminal 204 carries the color image identifier in the sent response message, indicating that the called user terminal 204 accepts the current call. Color image business.
  • the called user terminal 204 does not consider whether to accept the color image service of the current call when sending the response message, and sends a response message according to the prior art.
  • the called CRS AS 202 determines to reject the color of the current call. For example, the service does not add a color image identifier to the response message.
  • the called CRS AS 202 carries the color image identifier in the response message and then sends it to indicate that the called network terminal 10 receives the current call color. Like business. After receiving the response message returned by the called network, if the response message carries the color image identifier, the calling CRS AS of the calling network 10, when receiving the temporary response initiated by the calling user terminal, the calling CRS AS A color image early session SDP request is inserted in the temporary response, otherwise, the calling CRS AS does not insert a color image early session SDP request in the temporary response.
  • the response message returned by the called user terminal 204 may be an 18x (including 180 and 183) response message.
  • the response message may be a 180 response message, and if no resources are available, In the case of reserved resources, the response message can be a 183 response message.
  • the called user can set its color image playing policy in the called CRS AS, so that when the calling party calls, it can judge whether to allow the current call to play the color image according to the color image playing policy, thereby improving the user experience.
  • . 4 is a schematic structural diagram of a CRS AS according to an embodiment of the present invention.
  • the CRS AS can be used as the called CRS AS 202. As shown in FIG.
  • the CRS AS mainly includes: a storage module 42, a receiving module 44, a judging module 46, an executing module 48, and a sending module 40.
  • the storage module 42 is configured to store a color image playing policy of the called user terminal
  • the receiving module 44 is configured to receive a call request for the called user terminal, where the call request carries a color image indicating that the current call is carried.
  • the determining module 46 is configured to determine, according to the color image playing policy stored by the storage module 42, whether to accept the color image service of the current call;
  • the executing module 48 configured to determine, in the determining module 46, to reject the color image of the current call.
  • the color image identifier carried in the call request is deleted; the sending module 40 is configured to send the call request processed by the executing module 48.
  • the called user terminal After receiving the call request, the called user terminal will return a response message of the call request. If the called user terminal supports the early session, the response message carries a message indicating that the called user terminal supports the early session.
  • Ability identification If the called user refuses to play the color image, in order to prevent the color image from being played in the subsequent process, when the response message is sent to the calling network, the capability identifier in the response message needs to be deleted, and therefore, the receiving module 44 is further used.
  • a response message for receiving a call request where the response message carries a capability identifier indicating that the called user terminal supports the early session; and the executing module 48 is further configured to: when the determining module 46 determines to reject the color image service of the current call, The foregoing capability identifier in the response message is deleted; the sending module 40 is further configured to send the response message processed by the executing module 48. Alternatively, the receiving module 44 is further configured to receive a response message of the call request. The executing module 48 is further configured to: in the case that the determining module 46 determines to accept the color image service of the current call, the carrying message in the response message carries the indication that the called user terminal accepts the color image.
  • FIG. 5 is a flowchart of a method for implementing an IMS-based color image according to an embodiment of the present invention. As shown in FIG.
  • the method mainly includes the following steps (step S502 - step S506): Step S502, the called user terminal belongs to Calling the CRS AS to receive a call request from the called network, where the call request carries a color image identifier indicating that the current call has a color image service; Step S504, the called CRS AS determines whether to reject the color image of the current call. If yes, go to step S506, otherwise, go to step S508; In actual application, set the color image playing policy of the called user terminal in the called CRS AS, after the called CRS AS receives the call request, According to the color image playing policy of the called user terminal of the call request, it is determined whether to reject the color image service of the current call.
  • the color image playing strategy set on the CRS AS includes but is not limited to:
  • the partial number may be set. If the calling user of the call is the calling user corresponding to the number, the call is rejected. The color image service; or, if the calling party of the call is the calling user corresponding to the number, accept the color picture service of the call.
  • Step S506 the called CRS AS deletes the color image identifier carried in the call request, and sends a call request after deleting the color image identifier to the called user terminal; because the color image identifier in the call request is deleted, when the call request is routed
  • the called user terminal determines that the color image does not need to be played, and therefore, the called user terminal processes the current call as a call without the color image service.
  • Step S508 the called CRS AS forwards the call request directly to the called user terminal.
  • the called network may indicate whether to reject the color image service of the current call by carrying a color image identifier in the response message of the call request returned to the calling network, or may also support whether the message is carried in the response message.
  • the capability identification of the early session indicates whether to reject the color picture service of the current call.
  • the color image service indicating whether the called user terminal rejects the current call by the color image identification includes but is not limited to the following two methods:
  • the called user terminal After the called user terminal receives the call request, if the call request does not carry the color image identifier, the called user terminal does not carry the color image identifier in the response message returning the call request; if the received call request Carrying the color image identifier, the user terminal is instructed to accept the color image service of the current call, and therefore, the called user terminal carries the color image identifier in the returned response message;
  • the called user terminal After receiving the call request, the called user terminal returns a response message of the call request, and after the called CRS AS receives the response message, if the color image service of the current call is rejected, the called CRS AS is not in the response. The color image identifier is added to the message. Otherwise, the called CRS AS adds the color image identifier to the response message and then sends it.
  • the calling CRS AS of the calling network after receiving the temporary response initiated by the calling user terminal, if the response message carries the color image identifier, the calling CRS The AS inserts a color image early session SDP request in the temporary response, otherwise, the calling CRS
  • Step 1 The called user terminal returns a response message of the call request, where the response message carries There is a capability identifier indicating that the called user terminal supports the early session; in an actual application, the response message may be an 18x (including 180 and 183) response message, specifically, if both the calling user and the called user are available before the call.
  • the response message is a 180 response message, otherwise, the response message is a 183 response message for the resource reservation negotiation, the specific resource reservation negotiation process and the existing The process of resource reservation ten business is similar, and will not be repeated here.
  • Step 2 After receiving the response message, the CRS AS to which the called user terminal belongs determines that the called user terminal does not allow the current call to play the color image according to the color image policy of the called user terminal.
  • Step 3 The CRS AS deletes the response message. The above capability identifier is sent, and a response message after deleting the capability identifier is sent.
  • step 2 if the CRS AS determines that the called user terminal allows the current call to play the color image, the CRS AS does not modify the response message in step 3, and directly forwards the response message.
  • the color image can be rejected according to the policy configuration of the called user, thereby providing a better experience for the called user.
  • Embodiment 1 the case where the called user does not allow the current call to play the color image is taken as an example for description.
  • the calling user UE1 and the called user UE2 have available resources before the call, and do not need to negotiate the resource reservation, and the called network supports the early session in the response message of the call request.
  • the capability identifier indicates whether to accept the color image service of the current session.
  • FIG. 6 is a flowchart of the acknowledgment that the called party refuses to accept the color image service in the embodiment. As shown in FIG.
  • the method mainly includes the following steps: Step 601: The calling user UE1 initiates a call request through the IMS network, where the call request is Carrying the CRS identifier, indicating that the current call request carries the CRS service; Step 602: After receiving the call request, the calling S-CSCF triggers the call to the calling CRS AS according to the signing rule of the user UE1 for the color image; Step 603, the calling CRS AS supports the capability identification insertion of the early session mode.
  • Step 604 the calling S-CSCF sends the call request to the called user network; Step 605, because the called CRS AS is set with the called color image playing policy, The call request is routed to the called CRS AS, and the called CRS AS determines that the color image needs to be rejected according to the preset color image playing policy. After the called CRS AS deletes the CRS identifier in the call request, the called CRS AS will process the call.
  • the call request is routed to the called user UE2; Step 606, after the called user UE2 receives the call request, because the call request does not carry the CRS identifier, the called user directly replies with the 180 response message, and plays the local ringtone without starting The timer, because the called user supports the early session, the 180 response message of the reply carries the capability identifier for supporting the early session; Step 607, after the called CRS AS receives the 180 response message, Determining the rejection of the color image according to the preset color image playing policy of the called party.
  • the capability identifier supporting the early session in the 180 response message is deleted and routed to the calling side network; Steps 608 to 610, the calling S-CSCF receives After the 180 response message, it is routed to the calling user UE1. Because of the 180 response, the capability index i of the early session is only deleted, and the calling CRS AS considers that the called party does not support the early session mode; Step 611, if this is the case The 180 response message is a reliability response, then the UE1 sends a PRACK request to the called party; Step 612, the S-CSCF PRACK is triggered to the calling CRS AS; Step 613, after the calling CRS AS receives the PRACK, it is received in step 608.
  • the 180 response message indicates that the called party does not support the early session mode. Therefore, the calling CRS AS does not insert an early session SDP request indicating the color image in the PRACK; Steps 614 to 615, the calling S-CSCF will PRACK through the called network. Forward to user UE2; Step 4 gathers 616 ⁇ 620, the called party replies to PRACK, and calls the calling user through the called network and the calling network.
  • UE1 sends a 200 OK response; Step 621: When the called user UE2 answers the current call, sends a 200 OK response to the calling party; Step 622, the calling user UE1 sends an ACK to the called user UE2 to indicate that the call is received. .
  • FIG. 7 is a flowchart of a method for receiving a color image service in the present embodiment. As shown in FIG. 7, the method mainly includes the following steps: Step 701: A calling user UE1 initiates a call request through an IMS network, where the call request is carried in the call request.
  • the CRS identifier is used to indicate that the current call request carries the CRS service.
  • Step 702 After receiving the call request, the calling S-CSCF triggers the call to the calling CRS AS according to the signing rule of the user UE1 for the color image; Step 703 The calling CRS AS inserts the capability identifier supporting the early session mode into the call request and returns to the calling S-CSCF; Step 704, the calling S-CSCF sends the call request to the called user network; Step 705, The CRS AS is set to have a called color image playing policy. Therefore, the call request is routed to the called CRS AS, and the called CRS AS judges to accept the playing color image according to the color image playing policy preset by the called party, and the called CRS is called.
  • the AS directly converts the call request to the called user UE2.
  • Step 706 Since the resource reservation negotiation is not required, the called user UE2 directly responds to the 180 response message after receiving the call request, and starts. The device does not play the local ringtone.
  • the 180 response message also carries the capability identifier that supports the early session mode, indicating that the called party also supports the early session mode.
  • Step 707 after the called CRS AS receives the 180 response message, Pre-set according to the called If the color image playing policy determines to accept the playing color image, the called CRS AS directly converts the 180 response message to the calling S-CSCF; Step 708, after the calling S-CSCF receives the 180 response message, ⁇ !
  • the trigger CRS AS is sent to the calling CRS AS, and the calling CRS AS learns that the called user UE2 supports the early session mode.
  • the calling CRS AS returns a 180 response message to the calling S-CSCF.
  • the calling S-CSCF Routing the 180 response message to the calling user UE1;
  • Step 711 after the calling user UE1 learns that the called user supports the early session mode, sends a temporary message (PRACK) to the called user;
  • Step 712 the calling party S-CSCF ⁇ 1
  • the temporary message (PRACK) is triggered to the calling CRS AS;
  • Step 713 after receiving the temporary message (PRACK), the calling CRS AS inserts the early session SDP request describing the color image media message into the temporary message and returns to the calling party S.
  • Step 714 the calling S-CSCF sends the temporary message to the called user UE2;
  • Step 715 after receiving the temporary message, the called user UE2 replies to the calling S-CSCF with a temporary message response, and carries the early The media SDP replies, indicating that the called user UE2 accepts the color image service of the calling party;
  • Step 716 the calling S-CSCF triggers the temporary message response carrying the early session SDP response to the calling CRS AS, and the calling CRS AS according to the early session SDP Negotiate the media gateway to prepare for Calling the color image media;
  • Step 717 the calling CRS AS deletes the early session SDP response, and returns the temporary message response to the calling S-CSCF;
  • Step 718 the calling S-CSCF routes the temporary message response to the calling user UE1; At this time, the early media of the color image service can start playing for the called user.
  • Step 719 When the called user UE2 answers the call request, send a 200 OK response to the calling user UE1.
  • the calling user UE1 sends an ACK to the called user UE2 to indicate that a 200 OK response is received.
  • Embodiment 3 the case where the called user allows the current call to play the color image is taken as an example for description.
  • the calling user UE1 and the called user UE2 have available resources before the call, and do not need to negotiate the resource reservation, and the called network carries the color image identifier in the response message of the call request. (CRS flag) to indicate whether to accept the color image service of the current session.
  • CRS flag to indicate whether to accept the color image service of the current session.
  • Step 801 A calling user UE1 initiates a call request through an IMS network, where the call request is carried in the call request.
  • Step 802 After receiving the call request, the calling S-CSCF triggers the call to the calling CRS AS according to the signing rule of the user UE1 for the color image; Step 803 The calling CRS AS inserts the capability identifier supporting the early session mode into the call request and then returns to the calling S-CSCF; Step 804, the calling S-CSCF sends the call request to the called user network; Step 805, The CRS AS is set to have a called color image playing policy. Therefore, the call request is routed to the called CRS AS, and the called CRS AS judges to accept the playing color image according to the color image playing policy preset by the called party, and the called CRS is called.
  • the AS directly converts the call request to the called user UE2.
  • Step 806 Since the resource reservation negotiation is not required, the called user UE2 directly responds to the reliability 180 response message after receiving the call request.
  • the CRT is enabled to play the local ringtone.
  • the reliability 180 response message also carries the capability identifier that supports the early session mode.
  • the indicated party also supports the early session mode.
  • the called CRS AS directly forwards the reliability 180 response message after the called CRS AS receives the reliability 180 response message and determines to accept the playing color image according to the color image playing policy set by the called party.
  • Step 808 after receiving the reliability 180 response message, the calling S-CSCF triggers the call to the calling CRS AS, and the calling CRS AS learns that the called user UE2 supports the early session mode, and Agree to play the color image; Step 809, the calling CRS AS returns a reliable 180 response message to the calling S-CSCF; Step 810: The calling S-CSCF routes the reliability 180 response message to the calling user UE1. Step 811: After receiving the reliability 180 response, the calling user UE1 sends a temporary message (PRACK) to the called user.
  • PRACK temporary message
  • Step 812 The calling S-CSCF ⁇ 1 temporary message (PRACK) is triggered to the calling CRS AS; Step 813, after the calling CRS AS receives the temporary message (PRACK), inserts the early session SDP request describing the color image media message into the temporary The message is returned to the calling S-CSCF; Step 814 815, the calling S-CSCF sends the temporary message to the called user UE2; Step 816 817, after the called user UE2 receives the temporary message, the calling party S - The CSCF replies to the temporary message response, and carries the early media SDP response, instructing the called user UE2 to accept the color image service of the calling party; Step 818, the calling S-CSCF triggers the temporary message response carrying the early session SDP response to the calling CRS AS, the calling CRS AS notifies the media gateway to play the color image media for the called party according to the early session SDP negotiation situation; Step 819, the calling CRS AS deletes the early session SDP response, and returns the temporary message response to the calling
  • Step 821 When the called user UE2 answers the above call request, send a 200 OK response to the calling user UE1.
  • the calling user UE1 sends an ACK to the called user UE2 to indicate that a 200 OK response is received.
  • Embodiment 4 the case where the called user does not allow the current call to play the color image is taken as an example for description.
  • the calling user UE1 and the called user UE2 have available resources before the call, and do not need to negotiate the resource reservation, and the called network carries the color image identifier in the response message of the call request.
  • Figure 9 is called in the present embodiment The flowchart of the color image service, as shown in FIG.
  • Step 901 The calling user UE1 initiates a call request through the IMS network, where the call request carries a CRS identifier, indicating the current call request.
  • the calling S-CSCF triggers the call to the calling CRS AS according to the signing rule of the user UE1 for the color image;
  • Step 903 the calling CRS AS will support the early session.
  • the capability identifier of the mode is inserted into the call request and then returned to the calling S-CSCF; Step 904, the calling S-CSCF sends the call request to the called user network; Step 905, because the called CRS AS is set with the called color Like the play policy, therefore, the call request is routed to the called CRS AS, and the called CRS AS judges to refuse to play the color image according to the color image playing policy preset by the called party, and the called CRS AS deletes the CRS mark and converts the call request. And routing the message to the called user UE2; Step 906, because the resource reservation negotiation is not required, the called user UE2 directly responds to the 180 response message after receiving the call request, and plays the local ringtone.
  • the 180 response message does not carry the CRS color image indication, indicating that the called party does not agree to play the color image;
  • Step 907 after receiving the 180 response message, the called CRS AS directly forwards the 180 response message to the calling S-CSCF.
  • Step 908 after the calling S-CSCF receives the 180 response message, ⁇ !
  • the caller CRS AS is called to the calling CRS AS, and the calling CRS AS knows that the called user UE2 does not agree to play the color image;
  • Step 909, the calling CRS AS returns a 180 response message to the calling S-CSCF;
  • Step 910 the calling S- The CSCF routes the 180 response message to the calling user UE1.
  • Step 911 after receiving the 180 response, the calling user UE1 does not send a temporary response.
  • Step 912 the calling S-CSCF ⁇ 1 temporary message (PRACK) is triggered to the calling CRS AS; Step 913, after the calling CRS AS receives the temporary message (PRACK), no longer Will describe the color
  • An early session SDP request such as a media message, is inserted into the temporary message; Step 914 915, the calling S-CSCF sends the temporary message to the called user UE2; Step 916 917, after the called user UE2 receives the temporary message, The calling S-CSCF replies to the temporary message response; Step 918, the calling S-CSCF triggers the temporary message response to the calling CRS AS; Step 919, the calling CRS AS returns the temporary message response to the calling S-CSCF; Step 920 The calling S-CSCF routes the temporary message response to the calling user UE1; Step 921, when the called user UE2 answers the call request, sends a 200 OK response to
  • the method of the present invention does not need to modify the existing IMS architecture, and only needs to save the policy of the called user on the called image image application server, and determine whether the policy configuration determines whether Rejecting the color image service solves the problem that the called user cannot refuse the color image service in the call according to his own needs, thereby improving the user experience.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.

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Abstract

本发明公开了一种基于IP多媒体子系统的彩像实现方法、装置及系统，该方法包括：被叫用户终端所属的被叫CRSAS接收到路由自被叫网络的呼叫请求，其中，该呼叫请求中携带有指示当前呼叫带有彩像业务的彩像标识；被叫CRSAS判断是否拒绝当前呼叫的彩像业务，如果是，则删除呼叫请求中携带的彩像标识，并向被叫用户终端发送删除彩像标识后的呼叫请求。本发明解决了相关技术中被叫用户不能根据自己需求拒绝呼叫中的彩像业务的问题，进而提高了用户体验。

Description

基于 IP多媒体子系统的彩像实现方法、 装置及系统 技术领域 本发明涉及通信领域， 具体而言， 涉及一种基于 IP多媒体子系统的彩像 实现方法、 装置及系统。 背景技术
IP多媒体子系统 （ IP Multimedia Core Network Subsystem, 简称为 IMS ) 网络中的彩像业务是指在主叫向被叫拨打电话时， 可以在被叫终端上显示或 播放主叫用户预先设置的文字、 图片、 音频、 视频等多种媒体形式。 图 1是现有技术中在 IMS网络中部署彩像业务的一种架构图。其中包括： 主叫 UE1 ( 101 ), 主叫月艮务呼叫会话控制功能 ( Serving Call Session Control Function, 简称为 S-CSCF ) ( 102 ), 主叫方的提供彩像业务的应用服务器 ( Customized Ringing Signal Application Server, 简称为 CRS AS ) ( 103 ), 被 叫 S-CSCF ( 104 ), 和被叫 UE2 ( 105 ), 当被叫用户将彩像的配置策略等信 息保存在网络上的时候， 一般可以保存在被叫方的 CRS AS ( 106 ) 上。 早会话方式 （ Early session model ) 定义于 RFC 3959中， 其中定义了早 会话描述协议 ( early session SDP ) 来表示早媒体的会话描述协议 （Session Description Protocol , 简称为 SDP )信息， 以区别正常通话的 SDP信息。 图 2是相关技术中釆用早会话方式播放彩像的流程图之一。 此时主叫用 户 UE1和被叫用户 UE2在呼叫前都有可用的资源， 即不需要再进行资源预 留的协商， 为了简化流程， 图中没有将被叫侧的 S-CSCF作为一个单独的实 体显示出来， 如图 2所示， 釆用早会话方式播放彩像主要包括以下步骤： 步骤 201 ,主叫用户 UE1通过 IMS网络发起呼叫请求，其中携带有 CRS 标识， 指示当前的请求中会有彩像业务； 步骤 202, 主叫 S-CSCF接收到上述呼叫请求后， 根据主叫 UE1对彩像 的签约规则将呼叫触发到主叫 CRS AS上； 步骤 203 , 主叫 CRS AS将支持早会话方式的能力标识插入到呼叫请求 中以表示主叫网络支持早会话方式， 将呼叫请求返回给主叫 S-CSCF; 步骤 204 , 主叫 S-CSCF将呼叫请求发送给被叫用户 UE2; 步骤 205 , 由于不需要进行资源预留的协商， 被叫用户 UE2接收到呼叫 请求后直接回复 180振铃响应， 启动定时器， 不播放本地铃声， 其中， 上述 180 响应消息中也携带有支持早会话方式的能力标识， 指示被叫侧也支持早 会话方式； 步骤 206, 主叫 S-CSCF接收到 180响应消息后， ^！夺其触发给主叫 CRS AS , 主叫 CRS AS获知被叫用户 UE2支持早会话方式； 步骤 207 , 主叫 CRS AS将 180响应消息返回给主叫 S-CSCF; 步骤 208 , 主叫 S-CSCF将 180响应消息路由给主叫用户 UE1 ; 步骤 209, 主叫用户 UE1获知被叫用户支持早会话方式后， 向被叫用户 发送一个临时消息 （ PRACK ); 步骤 210 , 主叫 S-CSCF ^1临时消息 （PRACK ) 触发给主叫 CRS AS; 步骤 211 , 主叫 CRS AS接收到临时消息 （ PRACK ) 后， 将描述彩像媒 体消息的早会话 SDP请求插入到临时消息中并返回给主叫 S-CSCF; 步骤 212 , 主叫 S-CSCF将这个临时消息发送给被叫用户 UE2; 步骤 213 , 被叫用户 UE2接收到上述临时消息后， 向主叫 S-CSCF回复 临时消息应答， 并携带早媒体 SDP应答， 指示被叫用户 UE2接受主叫的彩 像业务； 步骤 214 , 主叫 S-CSCF将携带早会话 SDP应答的临时消息应答触发给 主叫 CRS AS , 主叫 CRS AS根据早会话 SDP协商情况通知媒体网关准备为 被叫播放彩像媒体； 步骤 215 , 主叫 CRS AS删除早会话 SDP应答， 将临时消息应答返回给 主叫 S-CSCF; 步骤 216 , 主叫 S-CSCF将临时消息应答路由给主叫用户 UE1 ; 此时彩像业务的早媒体就可以开始为被叫用户播放了。 步骤 217, 当被叫用户 UE2应答上述呼叫请求时， 向主叫发送 200 OK 应答； 步骤 218, 主叫 S-CSCF将 200 OK应答触发给主叫 CRS AS , 主叫 CRS
AS通知媒体网关结束播放彩像； 步骤 219, 主叫 CRS AS将 200 OK应答返回给主叫 S-CSCF; 步骤 220, 主叫 S-CSCF将 200 OK应答路由给主叫用户 UE1; 步骤 221〜222,主叫用户 UE1向被叫用户 UE2发送 ACK表明接收到 200 OK应答。 在实际应用中， 在某些情况下， 被叫用户可能需要拒绝接受呼叫请求中 的彩像业务， 但在上述流程中， 被叫用户无法实现拒绝呼叫请求中的彩像业 务， 从而降低了用户体验。 发明内容 本发明的主要目的在于提供一种基于 IMS 的彩像实现方法、 装置及系 统， 以至少解决上述被叫用户无法拒绝呼叫请求中的彩像业务的问题。 根据本发明的一个方面， 提供了一种基于 IMS的彩像实现方法， 包括： 被叫用户终端所属的被叫 CRS AS接收到路由自被叫网络的呼叫请求，其中， 该呼叫请求中携带有指示当前呼叫带有彩像业务的彩像标识； 被叫 CRS AS 判断是否拒绝当前呼叫的彩像业务， 如果是， 则删除呼叫请求中携带的彩像 标识， 并向被叫用户终端发送删除彩像标识后的呼叫请求。 根据本发明的另一方面， 提供了一种彩像业务应用服务器， 包括： 存储 模块、 接收模块、 判断模块、 执行模块和发送模块。 其中， 存储模块， 用于 存储被叫用户终端的彩像播放策略； 接收模块， 用于接收针对被叫用户终端 的呼叫请求， 其中， 呼叫请求中携带有指示当前呼叫带有彩像业务的彩像标 识； 判断模块， 用于根据存储模块存储的彩像播放策略， 判断是否接受当前 呼叫的彩像业务； 执行模块， 用于在判断模块判断拒绝当前呼叫的彩像业务 的情况下， 删除呼叫请求携带的彩像标识； 发送模块， 用于向被叫用户终端 发送经执行模块处理后的呼叫请求。 根据本发明的又一个方面，提供了一种基于 IP多媒体子系统的彩像实现 系统， 包括： 主叫网络和被叫网络。 其中， 主叫网络， 用于向被叫网络发送 呼叫请求，其中，呼叫请求中携带有指示当前呼叫带有彩像业务的彩像标识； 被叫网络， 包括： 被叫 CRS AS , 用于根据预先设置的被叫用户终端的彩像 播放策略， 判断是否接受当前呼叫的彩像业务， 如果是， 则转发呼叫请求， 否则， 将呼叫请求中的彩像标识删除后再发送； 被叫用户终端， 用于接收被 叫 CRS AS发送的呼叫请求， 如果呼叫请求中没有携带彩像标识， 则将当前 呼叫作为带彩像业务的呼叫进行处理， 否则， 将当前呼叫作为不带彩像业务 的呼叫进行处理。 通过本发明， 在被叫用户所属的 CRS AS中设置被叫用户的彩像播放策 略， 在呼叫被叫用户时， 被叫 CRS AS根据该彩像播放策略判断被叫用户是 否接受当前呼叫的彩像业务， 如果拒绝， 则删除呼叫请求中的彩像标识， 从 而使得被叫用户终端可以拒绝呼叫请求中的彩像业务， 解决了相关技术中被 叫用户不能根据自己需求拒绝呼叫中的彩像业务的问题， 进而提高了用户体 验。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的 不当限定。 在附图中： 图 1为相关技术中彩像实现的架构图； 图 2为相关技术中彩像播放的流程图； 图 3为根据本发明实施例的基于 IMS的彩像实现系统的结构示意图； 图 4为才艮据本发明实施例的 CRS AS的结构示意图； 图 5为根据本发明实施例的基于 IMS的彩像实现方法的流程图； 图 6为才艮据本发明实施例一的流程图； 图 7为 居本发明实施例二的流程图； 图 8为才艮据本发明实施例三的流程图； 图 9为才艮据本发明实施例四的流程图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在 不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组合。 下面首先本发明实施例提供的基于 IMS的彩像实现系统进行说明。 图 3为根据本发明实施例的基于 IMS的彩像实现系统的结构示意图，如 图 3所示， 该系统包括： 主叫网络 10和被叫网络 20。 主叫网络 10用于向被叫网络 20发送 4十对被叫用户终端 204的呼叫请求， 其中， 该呼叫请求中携带有指示当前呼叫带有彩像业务的彩像标识， 其组成 与现有技术相似， 主要包括： 主叫 S-CSCF、 主叫 CRS-AS等， 具体在本发 明实施例中不再赘述； 被叫网络 20的组成也与现有技术相似， 主要包括： 被叫 CRS AS 202、 被叫用户终端 204和被叫 S-CSCF等，被叫网络 20与相有技术的区别在于被 叫 CRS AS中设置有被叫用户终端 204的彩像播放策略，被叫网络 20在接收 到主叫网络 10的上述呼叫请求时， 将该呼叫请求路由到被叫 CRS AS 202 , 被叫 CRS AS 202根据预先设置的被叫用户终端的彩像播放策略， 判断被叫 用户终端 204是否接受当前呼叫的彩像业务， 如果是， 则转发该呼叫请求， 否则， 将该呼叫请求中的彩像标识删除后再发送； 而被叫用户终端 204在接 收到呼叫请求后， 如果接收到的呼叫请求中没有携带彩像标识， 则将当前呼 叫作为不带彩像业务的呼叫进行处理； 否则， 将当前呼叫作为带彩像业务的 呼叫进行处理， 执行彩像的播放流程。 在被叫用户终端 204接收到呼叫请求后， 被叫用户终端 204还用于返回 上述呼叫请求的响应消息， 如果被叫用户终端 204支持早会话， 则该响应消 息中携带有指示被叫用户终端 204支持早会话的能力标识，由于被叫 CRS AS 202中设置有彩像播放策略，因此，在将该响应消息发送到主叫网络 10之前， 该响应消息先被路由到被叫 CRS AS 202 , 因此， 被叫 CRS AS 202还用于接 收到该响应消息后， 根据预先设置的被叫用户终端 204的彩像播放策略， 判 断被叫用户终端是否允许当前呼叫播放彩像， 如果是， 则向主叫网络 10 转 发该响应消息， 否则， 将该响应消息中的上述能力标识删除后再向主叫网络 10发送。 或者， 被叫用户终端 204也可以在发送的响应消息中指示其是否接受当 前呼叫的彩像业务， 具体地， 如果被叫用户终端 204接收到的呼叫请求中不 携带彩像标识， 则被叫用户终端 204确定拒绝当前呼叫的彩像业务， 不在发 送的响应消息中携带彩像标识； 否则， 被叫用户终端 204在发送的响应消息 中携带彩像标识， 指示被叫用户终端 204接受当前呼叫的彩像业务。 或者， 被叫用户终端 204在发送响应消息时不考虑是否接受当前呼叫的 彩像业务， 按现有技术发送响应消息， 被叫 CRS AS 202接收到该响应消息 后，如果确定拒绝当前呼叫的彩像业务， 则不在该响应消息中增加彩像标识， 否则， 被叫 CRS AS 202在该响应消息中携带彩像标识后再发送， 以指示主 叫网络 10被叫用户终端 204接受当前呼叫的彩像业务。 主叫网络 10的主叫 CRS AS在接收到被叫网络返回的响应消息后，如果 该响应消息中携带彩像标识， 则在后续接收到主叫用户终端发起的临时响应 时， 主叫 CRS AS在该临时响应中插入彩像早会话 SDP请求， 否则， 主叫 CRS AS不在该临时响应中插入彩像早会话 SDP请求。 在实际应用中， 被叫用户终端 204返回的上述响应消息可以为 18x (包 括 180和 183 ) 响应消息， 在有资源可用的情况下， 该响应消息可以为 180 响应消息，在没有资源可用、需要预留资源的情况下，该响应消息可以为 183 响应消息。 通过上述的系统， 可以被叫用户可以在被叫 CRS AS中设置其彩像播放 策略， 从而可以在主叫呼叫时， 根据该彩像播放策略判断是否允许当前呼叫 播放彩像， 提高了用户体验。 图 4为才艮据本发明实施例的 CRS AS的结构示意图， 在上述系统中， 该 CRS AS可以作为上述被叫 CRS AS 202使用。 如图 4所示， 该 CRS AS主要 包括： 存储模块 42、 接收模块 44、 判断模块 46、 执行模块 48和发送模块 40。 其中， 存储模块 42 , 用于存储被叫用户终端的彩像播放策略； 接收模块 44 , 用于接收针对被叫用户终端的呼叫请求， 其中， 该呼叫请求中携带有指 示当前呼叫带有彩像业务的彩像标识； 判断模块 46 , 用于根据存储模块 42 存储的彩像播放策略， 判断是否接受当前呼叫的彩像业务； 执行模块 48 , 用 于在判断模块 46 判断拒绝当前呼叫的彩像业务的情况下， 删除呼叫请求中 携带的彩像标识； 发送模块 40 , 用于发送经执行模块 48处理后的呼叫请求。 在具体应用中， 被叫用户终端在接收到呼叫请求后， 将返回该呼叫请求 的响应消息， 如果被叫用户终端支持早会话， 则该响应消息中将携带指示被 叫用户终端支持早会话的能力标识。 如果被叫用户拒绝播放彩像， 为了使后 续流程中不播放彩像， 在将该响应消息发送给主叫网络时， 需要删除该响应 消息中的上述能力标识， 因此， 上述接收模块 44 还用于接收呼叫请求的响 应消息， 其中， 该响应消息中携带有指示被叫用户终端支持早会话的能力标 识； 执行模块 48还用于在判断模块 46判断拒绝当前呼叫的彩像业务的情况 下， 删除响应消息中的上述能力标识； 发送模块 40 还用于发送经执行模块 48处理后的响应消息。 或者， 接收模块 44还用于接收呼叫请求的响应消息； 执行模块 48还用 于在判断模块 46 判断接受当前呼叫的彩像业务的情况下， 在响应消息中携 带指示被叫用户终端接受彩像业务的彩像标识； 发送模块 40 还用于发送经 执行模块 48处理后的响应消息。 通过本发明实施例提供的上述 CRS AS可以根据被叫用户的需求， 允许 或拒绝播放呼叫中带有的彩像业务， 从而提高用户体验。 下面对根据本发明实施例的基于 IMS的彩像实现方法进行描述。 图 5为根据本发明实施例的基于 IMS的彩像实现方法的流程图， 如图 5 所示， 该方法主要包括以下步骤 (步骤 S502 -步骤 S506 ): 步骤 S502, 被叫用户终端所属的被叫 CRS AS接收到路由自被叫网络的 呼叫请求， 其中， 该呼叫请求中携带有指示当前呼叫带有彩像业务的彩像标 识； 步骤 S504, 被叫 CRS AS判断是否拒绝当前呼叫的彩像业务， 如果是， 执行步骤 S506, 否则， 执行步骤 S508; 在实际应用中， 可以预先在被叫 CRS AS中设置被叫用户终端的彩像播 放策略， 被叫 CRS AS在接收到呼叫请求后， 才艮据该呼叫请求的被叫用户终 端的彩像播放策略， 判断是否拒绝当前呼叫的彩像业务。 在具体实施过程中， 设置在 CRS AS上的彩像播放策略包括但不限于：
( 1 ) 拒绝或接受所有呼叫的彩像业务请求； ( 2 ) 拒绝无法识别身份的主叫的呼叫的彩像业务， 对其他不拒绝;
( 3 ) 拒绝或接受预设标识对应的主叫用户发起的呼叫的彩像业务， 具 体地，可以设置部分号码，如果呼叫的主叫用户为这些号码对应的主叫用户， 则拒绝该呼叫的彩像业务； 或者， 如果呼叫的主叫用户为这些号码对应的主 叫用户， 则接受该呼叫的彩像业务。 步骤 S506, 被叫 CRS AS删除呼叫请求中携带的彩像标识， 并向被叫用 户终端发送删除彩像标识后的呼叫请求； 由于删除了上述呼叫请求中的彩像标识， 当该呼叫请求路由到被叫用户 终端时， 被叫用户终端确定不需要播放彩像， 因此， 被叫用户终端将当前呼 叫作为不带彩像业务的呼叫进行处理。 步骤 S508, 被叫 CRS AS直接向被叫用户终端转发呼叫请求。 在具体实施过程中， 被叫网络可以通过向主叫网络返回的呼叫请求的响 应消息中是否携带彩像标识来指示是否拒绝当前呼叫的彩像业务， 或者， 也 可以通过响应消息中是否携带支持早会话的能力标识来指示是否拒绝当前呼 叫的彩像业务。 具体地， 通过彩像标识指示被叫用户终端是否拒绝当前呼叫的彩像业务 包括但不限于以下两种方法：
( 1 ) 被叫用户终端在接收到呼叫请求后， 如果该呼叫请求中不携带彩 像标识， 则被叫用户终端在返回该呼叫请求的响应消息不携带彩像标识； 如 果接收到的呼叫请求中携带有彩像标识， 则指示被叫用户终端接受当前呼叫 的彩像业务， 因此， 被叫用户终端在返回的响应消息中携带彩像标识；
( 2 ) 被叫用户终端在接收到呼叫请求后， 返回该呼叫请求的响应消息， 被叫 CRS AS接收到响应消息后， 如果判断拒绝当前呼叫的彩像业务， 则被 叫 CRS AS不在该响应消息中增加彩像标识， 否则， 被叫 CRS AS在该响应 消息中增加彩像标识后再发送。 在这种情况下， 主叫网络的主叫 CRS AS在接收到响应消息后， 在后续 接收到主叫用户终端发起的临时响应后 ,如果该响应消息中携带有彩像标识 , 则主叫 CRS AS在该临时响应中插入彩像早会话 SDP请求， 否则， 主叫 CRS
AS不在该临时响应中携入彩像早会话 SDP请求。 如果通过支持早会话的能力标识指示被叫用户终端是否拒绝当前呼叫的 彩像业务可以通过以下步 4聚实现： 步骤 1 , 被叫用户终端返回呼叫请求的响应消息， 其中， 该响应消息中 携带有指示被叫用户终端支持早会话的能力标识； 在实际应用中， 该响应消息可以为 18x (包括 180和 183 ) 响应消息， 具体地， 如果主叫用户和被叫用户中呼叫前都有可用的资源， 即不需要进行 资源预留的协商， 则该响应消息为 180响应消息， 否则， 该响应消息为 183 响应消息， 以进行资源预留的协商， 具体资源预留协商流程与现有的资源预 留十办商流程相似， 在 匕不再赘述。 步骤 2, 被叫用户终端所属的 CRS AS接收到该响应消息后， 根据被叫 用户终端的彩像策略判断被叫用户终端不允许当前呼叫播放彩像； 步骤 3 , 上述 CRS AS删除响应消息中的上述能力标识， 并发送删除能 力标识后的响应消息。 在上述步骤 2中， 如果 CRS AS判断被叫用户终端允许当前呼叫播放彩 像， 则在步骤 3中 CRS AS不对响应消息进行修改， 直接转发该响应消息。 根据本发明实施例提供的上述方法， 可以根据被叫用户的策略配置拒绝 播放彩像， 从而为被叫用户提供更好的体验。
实施例一 在本实施例中， 以被叫用户不允许当前呼叫播放彩像为例进行说明。 在 本实施例中， 主叫用户 UE1和被叫用户 UE2在呼叫前都有可用的资源， 不 需要进行资源预留的协商， 并且， 被叫网络以呼叫请求的响应消息中是否携 带支持早会话的能力标识来指示是否接受当前会话的彩像业务。 图 6为本实 施例中被叫拒绝接受彩像业务的流程图， 如图 6所示， 具体主要包括以下步 骤： 步骤 601 , 主叫用户 UE1通过 IMS网络发起呼叫请求， 其中， 该呼叫请 求中携带有 CRS标识， 指示当前呼叫请求中带有 CRS业务； 步骤 602, 主叫 S-CSCF接收到上述呼叫请求后， 根据用户 UE1对彩像 的签约规则将呼叫触发到主叫 CRS AS上； 步骤 603 , 主叫 CRS AS将支持早会话方式的能力标识插入到呼叫请求 中再返回给主叫 S-CSCF; 步骤 604, 主叫 S-CSCF将呼叫请求发送给被叫用户网络； 步骤 605 , 由于被叫 CRS AS中设置有被叫彩像播放策略， 因此， 该呼 叫请求被路由到被叫 CRS AS , 被叫 CRS AS根据被叫预先设置的彩像播放 策略判断需要拒绝播放彩像，则被叫 CRS AS删除呼叫请求中的 CRS标识后， 将处理过的呼叫请求路由给被叫用户 UE2; 步骤 606, 被叫用户 UE2接收到上述呼叫请求后， 由于该呼叫请求中不 带 CRS标识， 被叫用户直接回复 180响应消息， 且播放本地铃声， 不用启动 定时器， 由于被叫用户支持早会话， 因此， 回复的 180响应消息中携带有支 持早会话的能力标识； 步骤 607, 被叫 CRS AS接收到 180响应消息后， 根据被叫预设的彩像 播放策略判断拒绝播放彩像， 因此， 删除 180响应消息中的支持 early session 的能力标识， 并路由给主叫侧网络； 步骤 608〜610, 主叫 S-CSCF接收到 180响应消息后， 将其路由到主叫 用户 UE1 ,由于 180响应中， early session 的能力标 i只被删除了，主叫 CRS AS 认为被叫不支持 early session方式； 步骤 611 , 如果此时的 180响应消息是可靠性响应， 则 UE1向被叫发送 PRACK请求； 步骤 612, S-CSCF PRACK触发到主叫 CRS AS； 步骤 613 , 主叫 CRS AS接收到 PRACK后， 由于在步骤 608中接收到的 180响应消息中显示被叫不支持 early session 方式， 因此， 主叫 CRS AS不 在 PRACK中插入表示彩像的 early session SDP请求； 步骤 614〜615 , 主叫 S-CSCF通过被叫网络将 PRACK转发到用户 UE2; 步 4聚 616〜620, 被叫回复 PRACK, 通过被叫网络和主叫网络向主叫用户 UE1发送 200 OK响应； 步骤 621 , 当被叫用户 UE2应答当前呼叫的时候， 向主叫发送 200 OK 应答； 步骤 622, 主叫用户 UE1向被叫用户 UE2发送 ACK表明已接) 到 200 OK应答。 实施例二 在本实施例中， 以被叫用户允许当前呼叫播放彩像为例进行说明。 在本 实施例中， 主叫用户 UE1和被叫用户 UE2在呼叫前都有可用的资源， 不需 要进行资源预留的协商， 并且， 被叫网络以呼叫请求的响应消息中是否携带 支持早会话的能力标识来指示是否接受当前会话的彩像业务。 图 7为本实施 例中被叫接受彩像业务的流程图， 如图 7所示， 具体主要包括以下步骤： 步骤 701 , 主叫用户 UE1通过 IMS网络发起呼叫请求， 其中， 该呼叫请 求中携带有 CRS标识， 指示当前呼叫请求中带有 CRS业务； 步骤 702, 主叫 S-CSCF接收到上述呼叫请求后， 根据用户 UE1对彩像 的签约规则将呼叫触发到主叫 CRS AS上； 步骤 703 , 主叫 CRS AS将支持早会话方式的能力标识插入到呼叫请求 中再返回给主叫 S-CSCF; 步骤 704, 主叫 S-CSCF将呼叫请求发送给被叫用户网络； 步骤 705 , 由于被叫 CRS AS中设置有被叫彩像播放策略， 因此， 该呼 叫请求被路由到被叫 CRS AS , 被叫 CRS AS根据被叫预先设置的彩像播放 策略判断接受播放彩像， 则被叫 CRS AS直接转换呼叫请求， 路由给被叫用 户 UE2; 步骤 706 , 由于不需要进行资源预留的协商， 被叫用户 UE2接收到呼叫 请求后直接回复 180响应消息， 启动定时器， 不播放本地铃声， 其中， 上述 180 响应消息中也携带有支持早会话方式的能力标识， 指示被叫侧也支持早 会话方式； 步骤 707, 被叫 CRS AS接收到 180响应消息后， 根据被叫预先设置的 彩像播放策略判断接受播放彩像， 则被叫 CRS AS直接转换 180响应消息, 路由到主叫 S-CSCF; 步骤 708, 主叫 S-CSCF接收到 180响应消息后， ^！夺其触发给主叫 CRS AS , 主叫 CRS AS获知被叫用户 UE2支持早会话方式； 步骤 709, 主叫 CRS AS将 180响应消息返回给主叫 S-CSCF; 步骤 710, 主叫 S-CSCF将 180响应消息路由给主叫用户 UE1; 步骤 711 , 主叫用户 UE1获知被叫用户支持早会话方式后， 向被叫用户 发送一个临时消息 （ PRACK ); 步骤 712, 主叫 S-CSCF ^1临时消息 （PRACK ) 触发给主叫 CRS AS; 步骤 713 , 主叫 CRS AS接收到临时消息 （PRACK ) 后， 将描述彩像媒 体消息的早会话 SDP请求插入到临时消息中并返回给主叫 S-CSCF; 步骤 714, 主叫 S-CSCF将这个临时消息发送给被叫用户 UE2; 步骤 715 , 被叫用户 UE2接收到上述临时消息后， 向主叫 S-CSCF回复 临时消息应答， 并携带早媒体 SDP应答， 指示被叫用户 UE2接受主叫的彩 像业务； 步骤 716, 主叫 S-CSCF将携带早会话 SDP应答的临时消息应答触发给 主叫 CRS AS , 主叫 CRS AS根据早会话 SDP协商情况通知媒体网关准备为 被叫播放彩像媒体； 步骤 717, 主叫 CRS AS删除早会话 SDP应答， 将临时消息应答返回给 主叫 S-CSCF; 步骤 718, 主叫 S-CSCF将临时消息应答路由给主叫用户 UE1; 此时彩像业务的早媒体就可以开始为被叫用户播放了。 步骤 719, 当被叫用户 UE2应答上述呼叫请求时， 向主叫用户 UE1发送 200 OK应答； 步骤 720,主叫用户 UE1向被叫用户 UE2发送 ACK表明接收到 200 OK 应答。 实施例三 在本实施例中， 以被叫用户允许当前呼叫播放彩像为例进行说明。 在本 实施例中， 主叫用户 UE1和被叫用户 UE2在呼叫前都有可用的资源， 不需 要进行资源预留的协商， 并且， 被叫网络以呼叫请求的响应消息中是否携带 彩像标识（ CRS标识）来指示是否接受当前会话的彩像业务。 图 8为本实施 例中被叫接受彩像业务的流程图， 如图 8所示， 具体主要包括以下步骤： 步骤 801 , 主叫用户 UE1通过 IMS网络发起呼叫请求， 其中， 该呼叫请 求中携带有 CRS标识， 指示当前呼叫请求中带有 CRS业务； 步骤 802, 主叫 S-CSCF接收到上述呼叫请求后， 根据用户 UE1对彩像 的签约规则将呼叫触发到主叫 CRS AS上； 步骤 803 , 主叫 CRS AS将支持早会话方式的能力标识插入到呼叫请求 中再返回给主叫 S-CSCF; 步骤 804, 主叫 S-CSCF将呼叫请求发送给被叫用户网络； 步骤 805 , 由于被叫 CRS AS中设置有被叫彩像播放策略， 因此， 该呼 叫请求被路由到被叫 CRS AS , 被叫 CRS AS根据被叫预先设置的彩像播放 策略判断接受播放彩像， 则被叫 CRS AS直接转换呼叫请求， 路由给被叫用 户 UE2; 步骤 806 , 由于不需要进行资源预留的协商， 被叫用户 UE2接收到呼叫 请求后直接回复可靠性 180响应消息， 启动定时器， 不播放本地铃声， 其中， 上述可靠性 180响应消息中也携带有支持早会话方式的能力标识， 指示被叫 侧也支持早会话方式，同时还携带有 CRS彩像标示，表明被叫同意播放彩像； 步骤 807, 被叫 CRS AS接收到可靠性 180响应消息后， 根据被叫预先 设置的彩像播放策略判断接受播放彩像，则被叫 CRS AS直接转发可靠性 180 响应消息， 路由到主叫 S-CSCF; 步骤 808, 主叫 S-CSCF接收到可靠性 180响应消息后， 将其触发给主 叫 CRS AS , 主叫 CRS AS获知被叫用户 UE2支持早会话方式， 且同意播放 彩像； 步骤 809, 主叫 CRS AS将可靠 180响应消息返回给主叫 S-CSCF; 步骤 810, 主叫 S-CSCF将可靠性 180响应消息路由给主叫用户 UE1; 步骤 811 , 主叫用户 UE1收到可靠性 180响应后， 向被叫用户发送一个 临时消息 （PRACK ); 步骤 812, 主叫 S-CSCF ^1临时消息 （PRACK ) 触发给主叫 CRS AS; 步骤 813 , 主叫 CRS AS接收到临时消息 （PRACK ) 后， 将描述彩像媒 体消息的早会话 SDP请求插入到临时消息中并返回给主叫 S-CSCF; 步骤 814 815 , 主叫 S-CSCF将这个临时消息发送给被叫用户 UE2; 步骤 816 817, 被叫用户 UE2接收到上述临时消息后， 向主叫 S-CSCF 回复临时消息应答， 并携带早媒体 SDP应答， 指示被叫用户 UE2接受主叫 的彩像业务； 步骤 818, 主叫 S-CSCF将携带早会话 SDP应答的临时消息应答触发给 主叫 CRS AS , 主叫 CRS AS根据早会话 SDP协商情况通知媒体网关准备为 被叫播放彩像媒体； 步骤 819, 主叫 CRS AS删除早会话 SDP应答， 将临时消息应答返回给 主叫 S-CSCF; 步骤 820, 主叫 S-CSCF将临时消息应答路由给主叫用户 UE1; 此时彩像业务的早媒体就可以开始为被叫用户播放了。 步骤 821 , 当被叫用户 UE2应答上述呼叫请求时， 向主叫用户 UE1发送 200 OK应答； 步骤 822,主叫用户 UE1向被叫用户 UE2发送 ACK表明接收到 200 OK 应答。 实施例四 在本实施例中， 以被叫用户不允许当前呼叫播放彩像为例进行说明。 在 本实施例中， 主叫用户 UE1和被叫用户 UE2在呼叫前都有可用的资源， 不 需要进行资源预留的协商， 并且， 被叫网络以呼叫请求的响应消息中是否携 带彩像标识来指示是否接受当前会话的彩像业务。 图 9为本实施例中被叫接 受彩像业务的流程图， 如图 9所示， 具体主要包括以下步骤: 步骤 901 , 主叫用户 UE1通过 IMS网络发起呼叫请求， 其中， 该呼叫请 求中携带有 CRS标识， 指示当前呼叫请求中带有 CRS业务； 步骤 902, 主叫 S-CSCF接收到上述呼叫请求后， 根据用户 UE1对彩像 的签约规则将呼叫触发到主叫 CRS AS上； 步骤 903 , 主叫 CRS AS将支持早会话方式的能力标识插入到呼叫请求 中再返回给主叫 S-CSCF; 步骤 904, 主叫 S-CSCF将呼叫请求发送给被叫用户网络； 步骤 905 , 由于被叫 CRS AS中设置有被叫彩像播放策略， 因此， 该呼 叫请求被路由到被叫 CRS AS , 被叫 CRS AS根据被叫预先设置的彩像播放 策略判断拒绝播放彩像， 则被叫 CRS AS删除 CRS标示， 并转换呼叫请求， 路由给被叫用户 UE2; 步骤 906 , 由于不需要进行资源预留的协商， 被叫用户 UE2接收到呼叫 请求后直接回复 180响应消息， 并播放本地铃声， 其中， 上述 180响应消息 中不携带 CRS彩像标示， 表明被叫不同意播放彩像； 步骤 907, 被叫 CRS AS接收到 180响应消息后， 直接转发 180响应消 息， 路由到主叫 S-CSCF; 步骤 908, 主叫 S-CSCF接收到 180响应消息后， ^！夺其触发给主叫 CRS AS , 主叫 CRS AS获知被叫用户 UE2不同意播放彩像； 步骤 909, 主叫 CRS AS将 180响应消息返回给主叫 S-CSCF; 步骤 910, 主叫 S-CSCF将 180响应消息路由给主叫用户 UE1; 步骤 911 , 主叫用户 UE1收到 180响应后， 不再发送临时性响应， 如果 此时被叫用户由于其他情况还必须发送临时响应， 则向被叫用户发送一个临 时消息 （PRACK ); 步骤 912, 主叫 S-CSCF ^1临时消息 （PRACK ) 触发给主叫 CRS AS; 步骤 913 , 主叫 CRS AS接收到临时消息 （PRACK ) 后， 不再将描述彩 像媒体消息的早会话 SDP请求插入到临时消息中； 步骤 914 915 , 主叫 S-CSCF将这个临时消息发送给被叫用户 UE2; 步骤 916 917, 被叫用户 UE2接收到上述临时消息后， 向主叫 S-CSCF 回复临时消息应答； 步骤 918, 主叫 S-CSCF将临时消息应答触发给主叫 CRS AS; 步骤 919, 主叫 CRS AS将临时消息应答返回给主叫 S-CSCF; 步骤 920, 主叫 S-CSCF将临时消息应答路由给主叫用户 UE1; 步骤 921 , 当被叫用户 UE2应答上述呼叫请求时， 向主叫用户 UE1发送 200 OK应答； 步骤 922,主叫用户 UE1向被叫用户 UE2发送 ACK表明接收到 200 OK 应答。 综上所述， 釆用本发明方法， 并不需要对现有 IMS架构做修改， 只需要 将被叫用户对彩像的策略保存在被叫彩像应用服务器上，通过判断策略配置， 确定是否拒绝彩像业务， 解决了相关技术中被叫用户不能根据自己需求拒绝 呼叫中的彩像业务的问题， 进而提高了用户体验。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布 在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程 序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 并 且在某些情况下， 可以以不同于此处的顺序执行所示出或描述的步骤， 或者 将它们分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制作 成单个集成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软件 结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"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. 一种基于 IP多媒体子系统 IMS的彩像实现方法， 其特征在于， 包括： 被叫用户终端所属的被叫彩像业务应用服务器 CRS AS接收到路由 自被叫网络的呼叫请求， 其中， 所述呼叫请求中携带有指示当前呼叫带 有彩像业务的彩像标识； 所述被叫 CRS AS判断是否拒绝当前呼叫的彩像业务， 如果是， 则 删除所述呼叫请求中携带的所述彩像标识， 并向所述被叫用户终端发送 删除所述彩像标识后的呼叫请求。
2. 根据权利要求 1所述的方法， 其特征在于， 如果所述被叫 CRS AS判断 接受当前呼叫的彩像业务， 则所述方法还包括：
所述被叫 CRS AS直接向所述被叫用户终端转发所述呼叫请求。
3. 根据权利要求 2所述的方法， 其特征在于， 在所述被叫 CRS AS发送呼 叫请求之后， 所述方法还包括：
所述被叫用户终端接收到呼叫请求后， 如果该呼叫请求中没有携带 所述彩像标识， 则将当前呼叫作为不带彩像业务的呼叫进行处理； 否则， 将当前呼叫作为带彩像业务的呼叫进行处理。
4. 根据权利要求 3所述的方法， 其特征在于， 将当前呼叫作为带彩像业务 的呼叫进行处理包括：
所述被叫用户终端返回携带彩像标识的响应消息； 或者， 所述被叫用户终端返回响应消息， 所述被叫 CRS AS接收到该响应 消息后， 确定被叫用户终端接受当前呼叫的彩像业务， 在所述响应消息 中携带彩像标识后发送；
其中， 所述响应消息中携带的彩像标识指示所述被叫用户终端接受 当前呼叫的彩像业务。
5. 根据权利要求 3所述的方法， 其特征在于， 将当前呼叫作为不带彩像业 务的呼叫进行处理包括： 所述被叫用户终端返回不携带彩像标识的响应消息， 指示所述被叫 用户终端拒绝当前呼叫的彩像业务；
主叫用户终端所属的主叫 CRS AS接收到所述响应消息后， 在后续 接收到主叫用户终端发起的临时响应时， 所述主叫 CRS AS不在该临时 响应中插入彩像早会话 SDP请求。
6. 根据权利要求 1所述的方法， 其特征在于， 在所述被叫 CRS AS发送呼 叫请求之后， 所述方法还包括：
所述被叫用户终端接收到所述呼叫请求后， 返回所述呼叫请求的响 应消息， 其中， 所述响应消息中携带有指示被叫用户终端支持早会话的 能力标识；
所述被叫 CRS AS接收到所述响应消息后， 判断拒绝当前呼叫的彩 像业务；
所述被叫 CRS AS删除所述响应消息中的所述能力标识， 并发送删 除所述能力标识后的响应消息。
7. 根据权利要求 6所述的方法， 其特征在于， 如果所述被叫 CRS AS判断 接受当前呼叫的彩像业务， 则所述方法还包括：
所述被叫 CRS AS转发接收到的所述响应消息。
8. 根据权利要求 1至 7中任一项所述的方法， 其特征在于， 所述被叫 CRS AS判断是否拒绝当前呼叫的彩像业务包括：
所述被叫 CRS AS根据预先设置的所述被叫用户终端的彩像播放策 略判断是否拒绝当前呼叫的彩像业务。
9. 根据权利要求 8所述的方法， 其特征在于， 所述彩像播放策略包括以下 之一：
拒绝所有呼叫的彩像业务； 接受所有呼叫的彩像业务；
拒绝无法识别身份的主叫用户发起的呼叫的彩像业务； 拒绝预设标识对应的主叫用户发起的呼叫的彩像业务； 接受预设标识对应的主叫用户发起的呼叫的彩像业务。
10. —种彩像业务应用月艮务器， 其特征在于， 包括：
存储模块， 用于存储被叫用户终端的彩像播放策略；
接收模块， 用于接收针对被叫用户终端的呼叫请求， 其中， 所述呼 叫请求中携带有指示当前呼叫带有彩像业务的彩像标识；
判断模块， 用于根据所述存储模块存储的所述彩像播放策略， 判断 是否接受当前呼叫的彩像业务；
执行模块， 用于在所述判断模块判断拒绝当前呼叫的彩像业务的情 况下， 删除所述呼叫请求携带的所述彩像标识；
发送模块， 用于向所述被叫用户终端发送经所述执行模块处理后的 呼叫请求。
11. 根据权利要求 10所述的彩像业务应用服务器， 其特征在于，
所述接收模块还用于接收呼叫请求的响应消息， 其中， 所述响应消 息携带有指示被叫用户终端支持早会话的能力标识；
所述执行模块还用于在所述判断模块判断拒绝当前呼叫的彩像业务 的情况下， 删除所述响应消息中的所述能力标识；
所述发送模块还用于发送经所述执行模块处理后的响应消息。
12. 根据权利要求 10所述的彩像业务应用服务器， 其特征在于，
所述接收模块还用于接收所述呼叫请求的响应消息；
所述执行模块还用于在所述判断模块判断接受当前呼叫的彩像业务 的情况下， 在所述响应消息中携带指示被叫用户终端接受彩像业务的彩 像标识； 所述发送模块还用于发送经所述执行模块处理后的响应消息。
13. —种基于 IP多媒体子系统的彩像实现系统， 其特征在于， 包括：
主叫网络， 用于向被叫网络发送呼叫请求， 其中， 所述呼叫请求中 携带有指示当前呼叫带有彩像业务的彩像标识；
被叫网络， 包括： 被叫 CRS AS , 用于根据预先设置的被叫用户终端的彩像播放策略， 判断是否接受当前呼叫的彩像业务， 如果是， 则转发所述呼叫请求， 否 则， 将所述呼叫请求中的所述彩像标识删除后再发送；
所述被叫用户终端， 用于接收所述被叫 CRS AS发送的呼叫请求， 如果所述呼叫请求中没有携带所述彩像标识， 则将当前呼叫作为带彩像 业务的呼叫进行处理， 否则， 将当前呼叫作为不带彩像业务的呼叫进行 处理。
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