WO2015066843A1 - 呼叫控制方法及装置 - Google Patents

呼叫控制方法及装置 Download PDF

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Publication number
WO2015066843A1
WO2015066843A1 PCT/CN2013/086570 CN2013086570W WO2015066843A1 WO 2015066843 A1 WO2015066843 A1 WO 2015066843A1 CN 2013086570 W CN2013086570 W CN 2013086570W WO 2015066843 A1 WO2015066843 A1 WO 2015066843A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
paging
imsi
bsc
tmsi
Prior art date
Application number
PCT/CN2013/086570
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English (en)
French (fr)
Inventor
查双六
梁健
吴晓波
邹烨
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201380002378.9A priority Critical patent/CN103797826B/zh
Priority to PCT/CN2013/086570 priority patent/WO2015066843A1/zh
Publication of WO2015066843A1 publication Critical patent/WO2015066843A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/18Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a call control method and apparatus.
  • the long term evolution (English: Long Term Evolution, LTE) has developed rapidly, the bearer capability of LTE voice services is still immature.
  • the mobile phone does not support Internet Protocol bearer voice (English: Voice over internet protocol, abbreviation: VoIP), core network (English: Core Network, abbreviation: CN)
  • No IP multimedia system is deployed (English: IP Multimedia Subsystem , Abbreviations: IMS), etc. Therefore, the voice service of the LTE network can only be dropped back to the 2G/3G network, and the Circuit Switched Fall Back (CSFB) technology can be used.
  • the user equipment (English: User Equipment, abbreviation: UE) resides on the LTE network, and then falls back to the 2G/3G network before the call is established.
  • the circuit is provided by the Circuit Switched (CS) network.
  • CS Circuit Switched
  • the CSFB call can be divided into the calling and the calling according to the initiation and reception of the voice call; and the calling and called parties are connected to the global mobile communication system according to the LTE tracking area (English: Tracking Area, abbreviation: TA) and the UE.
  • Location area of the Internet/Universal Mobile Telecommunications System Terrestrial Radio Access Network (G/U) (English: Location Area, Abbreviation: LA Whether it is bound, can be divided into cross-LA calls and no cross-LA calls. Wherein, if the TA and the LA are bound, the call is not across the LA, and conversely, the call is made across the LA.
  • Table 1 shows the normal CSFB voice call identification method table. See Table 1.
  • the CSFB caller can be identified according to the CSMO in the location update.
  • the CSFB is called according to the CSMT.
  • Gp In the case of a cross-LA call scenario, only the UE and the network element support the R9 protocol or the R9 protocol or higher to identify the CSFB called.
  • the CSFB caller can only be identified according to the CSMO in the service request, and the CSFB caller cannot be identified; if both the UE and the network element support The R10 protocol or the R10 protocol or higher can identify the CSFB called according to the CSMT in the paging response.
  • Gp When the UE does not cross the LA call scenario, only the UE and the NE support the R10 protocol or the R10 protocol to identify the CSFB call.
  • the technical problem to be solved by the present invention is how to identify a CSFB called in various scenarios.
  • the present invention provides a call control method, including: The base station controller BSC receives a paging response returned by the user equipment, where the paging response carries an international mobile subscriber identity code IMSI and/or a mobile subscriber temporary identifier TMSI of the user equipment; the BSC detects its own paging record. Whether the IMSI and/or TMSI of the user equipment exists in a predetermined time;
  • the BSC determines the user equipment as a called user equipment of the circuit domain fallback CSFB.
  • the method before the BSC receives the paging response returned by the user equipment, the method further includes:
  • the BSC receives a paging message sent by the mobile switching center MSC, where the paging message carries the IMSI and the TMSI;
  • the BSC saves the IMSI and the TMSI carried in the paging message in the paging record
  • the BSC Determining, by the BSC, the IMSI and the TMSI that are not in the predetermined time recorded in the paging record, where the starting time of the predetermined time is that the BSC saves the IMSI and the TMSI in the paging record The moment in the middle.
  • the BSC reassigns the independent dedicated control channel SDCCH of the called user equipment of the CSFB to the transport channel TCH.
  • the user equipment is determined by the BSC as After the called user equipment of the CSFB, the method further includes:
  • the BSC delays the identity signaling and/or the class label query signaling to the ringing signaling Row.
  • the BSC In conjunction with the first aspect or the first possible implementation of the first aspect to any one of the third possible implementations of the first aspect, in a fourth possible implementation, the BSC determines the user equipment as a called user equipment that is not the CSFB.
  • the present invention provides a call control apparatus, including:
  • a first receiving unit configured to receive a paging response returned by the user equipment, where the paging response carries an international mobile subscriber identity code IMSI and/or a mobile subscriber temporary identifier of the user equipment
  • a detecting unit configured to detect, by the first receiving unit, whether an IMSI and/or TMSI of the user equipment exists in a paging record of the call control apparatus within a predetermined time;
  • a determining unit configured to communicate with the detecting unit, in the case that the detecting unit detects that the IMSI and the TMSI of the user equipment are not present in the paging record, determining the user equipment as a circuit domain fallback The called user device of CSFB.
  • the call control apparatus further includes: a second receiving unit, a storage unit, and a deleting unit;
  • the second receiving unit is configured to receive, after the first receiving unit receives the paging response, a paging message sent by the mobile switching center MSC, where the paging message carries the IMSI and the TMSI;
  • the storage unit is in communication with the second receiving unit, and configured to save IMSI and TMSI carried in the paging message in the paging record;
  • the deleting unit is in communication with the storage unit, and is configured to delete an IMSI and a TMSI that are not in the predetermined time recorded in the paging record, where a starting time of the predetermined time is that the storage unit is to be
  • the IMSI and TMSI carried in the paging message are saved at the moment in the paging record.
  • the call control device further includes an assignment unit;
  • the assignment unit is in communication with the determining unit, and is configured to independently control the called user equipment of the CSFB after the determining unit determines the user equipment as the called user equipment of the CSFB.
  • the channel SDCCH is reassigned to the transport channel TCH.
  • the call control apparatus further includes a delay unit
  • the delay unit is in communication with the determining unit, and is configured to delay the identity identification signaling and/or the class label query signaling after the determining unit determines the user equipment as the called user equipment of the CSFB. Execute after ringing signaling.
  • the determining unit And when the detecting unit detects that the IMSI and the TMSI of the user equipment are present in the paging record, determining the user equipment as a called user equipment that is not the CSFB.
  • the BSC after receiving the paging response returned by the user equipment, the BSC can detect whether the IMSI and/or TMSI of the user equipment exists in the paging record within a predetermined time, so that the user equipment can be quickly identified.
  • the called user device for CSFB After receiving the paging response returned by the user equipment, the BSC can detect whether the IMSI and/or TMSI of the user equipment exists in the paging record within a predetermined time, so that the user equipment can be quickly identified.
  • the called user device for CSFB The called user device for CSFB.
  • FIG. 1a is a flowchart of a call control method according to Embodiment 1 of the present invention.
  • Figure lb is a flowchart of CSFB called signaling according to Embodiment 1 of the present invention.
  • FIG. 2 is a flowchart of a call control method according to Embodiment 2 of the present invention.
  • FIG. 3 is a structural block diagram of a call control apparatus according to a third embodiment of the present invention.
  • FIG. 4 is a block diagram showing the structure of a call control apparatus according to Embodiment 4 of the present invention.
  • FIG. 5 is a block diagram showing the structure of a call control apparatus according to a fifth embodiment of the present invention. detailed description
  • Figure la is a flow chart of a call control method according to Embodiment 1 of the present invention. As shown in FIG. la, the call control method may specifically include:
  • Step S100 The base station controller (abbreviation: BSC) receives a paging response returned by the user equipment, where the paging response carries the international mobile subscriber identity code of the user equipment (English: International Mobile Subscriber Identity , Abbreviation: IMSI) and / or mobile user temporary identification code (English: Temporary Mobile Station Identity, abbreviation: TMSDo
  • FIG. 1b is a flowchart of CSFB called signaling according to Embodiment 1 of the present invention.
  • the UE may also be referred to as a mobile station (English: Mobile Station, abbreviation: MS).
  • the paging process before the step S100 may specifically include: Step 1.
  • the mobile switching center (English: Mobile Switch Center, abbreviation: MSC) may send a paging message to all BSCs in the location area where the paged MS is located (English: Paging 2.
  • Step 2 If the BSC receives the paging message sent by the MSC, the BSC may send a lookup to all base transceiver stations in the location area (English: Base Transceiver Station, abbreviation: BTS) in the received paging message.
  • MSC Mobile Switch Center
  • BTS Base Transceiver Station
  • Step 3 If the BTS receives the paging command sent by the BSC, the BTS may send a paging request to the MS on the paging subchannel to which the paging belongs; Step 4: If the MS is waiting for its waiting On the caller channel, the MS can decode the paging request, and if it finds that the page is itself, sends a channel request to the BTS; Step 5, the BTS sends a channel request to the BSC; Step 6, the BSC sends a channel activation to the BTS; Step 7. The BTS sends a channel activation confirmation to the BSC. Step 8. The BSC sends an immediate assignment command to the MS (English: Assignment Command). Step S100 corresponds to steps 9 to 11 in FIG.
  • the BTS sends a paging response (English: paging response) to the BSC.
  • the MS such as a cell phone, PAD, etc., receives an immediate assignment command sent by the BSC, and the gPBSC assigns a channel to the MS, and the MB I" MS can use the assigned channel to send a paging response to the BSC.
  • the BSC can receive the paging response, and the paging response carries the IMSI and/or TMSI of the MS, where the IMSI is an identification number that uniquely identifies the MS.
  • Step S120 The BSC detects whether there is an IMSI and/or TMSI of the user equipment in a predetermined time in the paging record of the BSC.
  • the BSC may record the paging message in its own paging record.
  • the paging message may include a message type, an IMSI, a TMSI, and a cell identification table.
  • the paging record can also record information such as the time when the paging message is sent.
  • the BSC may detect its own paging record and check whether there is an IMSI and/or MS of the MS within a predetermined time, for example, 10 seconds (English: second, abbreviation: s). TMSI.
  • the paging message records the paging message 0 at 9:18:12, the paging message 1 at 9:19:00, and the paging message 2 at 9:19:05, respectively, for a predetermined time of 10
  • the second and the current time is 9:19:08.
  • the B&B should search for the paging record in the first 10 seconds of the current time, and the BSC can detect whether the paging message 1 and the paging message 2 of the above three paging messages have the IMSI and/or TMSI of the MS.
  • Step S140 If the BSC detects that the IMSI and the TMSI of the user equipment do not exist in the paging record, the BSC determines the user equipment as a called user equipment of the circuit domain fallback CSFB.
  • the IBBSC may determine that the MS is the called MS of the CSFB. For example: Assume that the paging record records 9:18:12, paging message 0, 9:19:00, paging message 1 and 9:19:05, paging message 2, paging message 0. There is an IMSI and a TMSI of the MS, and there is no IMSI and TMSI of the MS in the paging message 1. The IMSI and the TMSI of the MS do not exist in the paging message 2, and the predetermined time is 10 seconds and the current time is 9:19. 08 seconds.
  • the IJBSC can detect whether the IMSI and the TMSI of the MS exist in the paging message 2 and the paging message 3, and the BSC can detect that the IMSI and the TMSI of the MS are not present in the paging message 2 and the paging message 3. It is determined that the MS is the called MS of CSFB.
  • the BSC determines that the user equipment is not the CSFB. Call the user device.
  • the paging message records 9:18:12, paging message 0, 9:19:00, paging message 1 and 9:19:05, paging message 2, paging message 0, respectively.
  • There is an IMSI and a TMSI of the MS and an IMSI and a TMSI of the MS are present in the paging message 1.
  • the IMSI and the TMSI of the MS are present in the paging message 2, and the predetermined time is 10 seconds and the current time is 9:19:08. .
  • the BSC can detect whether the IMSI and the TMSI of the MS exist in the paging message 2 and the paging message 3, and the BSC can detect that the IMSI and the TMSI of the MS exist in both the paging message 2 and the paging message 3, and the BSC can determine
  • the MS is a called MS that is not CSFB.
  • the BSC after receiving the paging response returned by the user equipment, the BSC can detect whether the IMSI and/or TMSI of the user equipment exists in the paging record within a predetermined time, so that the user equipment can be quickly identified. Whether it is the called user device of CSFB.
  • FIG. 2 is a flow chart of a call control method according to a second embodiment of the present invention.
  • the steps in Fig. 2 having the same reference numerals as those of Fig. la have the same functions, and a detailed description of these steps will be omitted for the sake of brevity.
  • the main difference between the call control method shown in FIG. 2 and the call control method shown in FIG. 1a is that, in addition to the steps S100, S120, and S140 in the first embodiment, the steps are performed. Before S100, it can also include:
  • Step S200 The BSC receives a paging message sent by the mobile switching center MSC, where the paging message carries the IMSI and the TMSI.
  • the paging message carries the IMSI and the TMSI.
  • Step S220 The BSC saves the IMSI and the TMSI carried in the paging message in the paging record.
  • the BSC may save the paging record in which the IMSI and TMSI carried in the paging message are recorded.
  • the MSC can send a paging message to all BSCs in the location area where the MS is located through the BSC.
  • the BSC can receive the paging message sent by the MSC, and record the IMSI and TMSI carried in the paging message in the paging record.
  • IMSI and TMSI carried in the paging message in the paging record.
  • Step S240 The BSC deletes the IMSI and the TMSI that are not in the predetermined time recorded in the paging record, where the starting time of the predetermined time is the IMSI and the TMSI carried by the BSC in the paging message. The time saved in the paging record.
  • the BSC may delete the IMSI and TMSI in the paging record that exceed a predetermined time, for example, 10 seconds.
  • a predetermined time for example, 10 seconds.
  • the paging message records the paging message 0 at 9:18:57, the paging message 1 at 9:19:00, and the paging message 2 at 9:19:05 in the paging record.
  • the predetermined time is 10 seconds, and the current time is 9:19:08, the paging record corresponding to the paging message 0 can be deleted; when the current time is 9:19:11, the paging message 1 can be deleted.
  • Paging record when the current time is 9:19:16, the paging record corresponding to paging message 2 can be deleted.
  • CSFB delay processing can be performed in the following manner:
  • Manner 1 The BSC reassigns the independent dedicated control channel SDCCH of the called user equipment of the CSFB to the transport channel TCH.
  • step 18 if the BSC has determined that the MS is the called MS of the CSFB, the Bay ijBSC may reassign the channel to the MS, and BP: may adjust the independent dedicated control channel SDCCH of the MS to the transmission channel.
  • the transmission rate of TCH, TCH is twice the transmission rate of SDCCH.
  • Manner 2 The BSC delays the identity signaling and/or the classifier query signaling to the ringing signaling.
  • Step 14 may be adjusted to be performed after step 26, and the identity signaling and/or class label query signaling may be delayed after the ringing signaling, gp: the identity is executed after the called connection is successfully established. Identify signaling and/or classifier query signaling.
  • IMEI International Mobile Equipment Identification Number
  • the BSC after receiving the paging response returned by the user equipment, the BSC can detect whether the IMSI and/or TMSI of the user equipment exists in the paging record within a predetermined time, so that the user equipment can be quickly identified. Whether it is the called user device of CSFB. In addition, by deleting the IMSI and TMSI that are not in the predetermined time in the paging record, the detection time of the BSC can be reduced, and the user equipment can be further quickly identified as the called user equipment of the CSFB.
  • the BSC has determined that the user equipment is the called user equipment of CSFB, reassign the SDCCH of the called user equipment of the CSFB to the TCH, and/or delay the identification signaling, the class label query signaling to the ringing letter. After the execution, the call connection can be established quickly, and the CSFB call delay can be reduced.
  • FIG. 3 is a block diagram showing the structure of a call control apparatus according to a third embodiment of the present invention.
  • the call control apparatus 300 of this embodiment is used to implement the call control method of the first embodiment shown in FIG.
  • the call control apparatus 300 may specifically include:
  • the first receiving unit 320 is configured to receive a paging response returned by the user equipment, where the paging response carries an international mobile subscriber identity code IMSI of the user equipment and/or a mobile subscriber temporary identifier TMSIo
  • the call control device 300 can be a BSC.
  • the UE may also be referred to as an MS.
  • the MSC may send a paging message to all BSCs in the location area where the paged MS is located, if the BSC receives the paging message sent by the MSC, The BSC may send out to all BTSs in the location area in the received paging message Paging order. If the BTS receives the paging command sent by the BSC, the Bay ijBTS may send a paging request to the MS on the paging subchannel to which the paging belongs.
  • the MS can send a channel request to the BTS.
  • the BTS may send a channel request to the BSC.
  • the BSC may send a channel activation to the BTS.
  • the BTS may return a channel activation confirmation to the BSC, which may send an immediate assignment command to the MS.
  • the first receiving unit 320 of the BSC can receive the paging response sent by the MS.
  • the MS such as a cell phone, PAD, etc.
  • receives an immediate assignment command sent by the BSC that is, the BSC assigns a channel to the MS
  • the IJMS can use the assigned channel to send a paging response to the BSC.
  • the first receiving unit 320 of the BSC may receive the paging response, and the paging response carries the IMSI and/or TMSI of the MS, where the IMSI is an identification number that uniquely identifies the MS.
  • the detecting unit 340 is in communication with the first receiving unit 320, and is configured to detect whether the IMSI and/or TMSI of the user equipment exists in a paging record of the call control apparatus within a predetermined time.
  • the BSC after receiving the paging message sent by the MSC, the BSC can record the paging message in the paging record.
  • the paging message may include a message type, an IMSI, a TMSI, and a cell identification table.
  • the paging record can also record information such as the time when the paging message is sent.
  • the detecting unit 340 may detect the paging record of the BSC, and check whether there is an IMSI of the MS within a predetermined time, for example, 10 seconds (s) in the paging record.
  • the detecting unit 340 should search for the paging record in the first 10 seconds of the current time, and can detect whether the paging message 1 and the paging message 2 of the above three paging messages have the IMSI and/or TMSI of the MS.
  • the determining unit 360 is configured to communicate with the detecting unit 340, where the detecting unit 340 detects that the IMSI and the TMSI of the user equipment are not present in the paging record, The user equipment determines that the circuit domain falls back to the called user equipment of the CSFB.
  • the determining unit 360 may determine that the MS is the called MS of the CSFB. For example: Assume that the paging record records 9:18:12 paging messages 0, 9:19:00, paging messages 1 and 9:19:05, paging messages 2, paging messages 0 There is an IMSI and a TMSI of the MS, and there is no IMSI and TMSI of the MS in the paging message 1. The IMSI and the TMSI of the MS do not exist in the paging message 2, and the predetermined time is 10 seconds and the current time is 9:19. 08 seconds.
  • the detecting unit 340 can detect whether the IMSI and the TMSI of the MS exist in the paging message 2 and the paging message 3, and the detecting unit 340 can detect that the IMSI of the MS does not exist in the paging message 2 and the paging message 3.
  • the TMSI, determination unit 360 can determine that the MS is the called MS of the CSFB.
  • the determining unit 360 is further configured to determine, when the detecting unit 340 detects that the IMSI and the TMSI of the user equipment exist in the paging record, Is the called user equipment that is not the CSFB.
  • the paging message records 9:18:12, paging message 0, 9:19:00, paging message 1 and 9:19:05, paging message 2, paging message 0, respectively.
  • There is an IMSI and a TMSI of the MS and an IMSI and a TMSI of the MS are present in the paging message 1.
  • the IMSI and the TMSI of the MS are present in the paging message 2, and the predetermined time is 10 seconds and the current time is 9:19:08. .
  • the detecting unit 340 can detect whether the IMSI and the TMSI of the MS exist in the paging message 2 and the paging message 3, and the detecting unit 340 can detect that the IMSI and the TMSI of the MS exist in both the paging message 2 and the paging message 3.
  • the determining unit 360 may determine that the MS is a called MS that is not a CSFB.
  • the detecting unit may detect whether the IMSI and/or TMSI of the user equipment exists in the paging record within a predetermined time, thereby determining The unit can quickly identify whether the user equipment is the called user equipment of CSFB.
  • Example 4 4 is a block diagram showing the structure of a call control apparatus according to a fourth embodiment of the present invention.
  • the call control apparatus 400 of this embodiment is used to implement the call control method of the second embodiment shown in FIG. 2. 4, the same components as those of FIG. 3, including the first receiving unit 320, the detecting unit 340, and the determining unit 360, have substantially the same functions as those described above, and a detailed description of these components is omitted for the sake of brevity.
  • the call control apparatus 400 may further include: a second receiving unit 410, The storage unit 420 and the deleting unit 430;
  • the second receiving unit 410 is configured to receive, after the first receiving unit 320 receives the paging response, a paging message sent by the mobile switching center MSC, where the paging message carries the IMSI and the TMSI.
  • a paging message sent by the mobile switching center MSC, where the paging message carries the IMSI and the TMSI.
  • the storage unit 420 is in communication with the second receiving unit 410, and is configured to save IMSI and TMSI carried in the paging message in the paging record.
  • the storage unit 420 may save the paging record in which the IMSI and TMSI carried in the paging message are recorded.
  • the call control device 400 can be a BSC.
  • the MSC can send a paging message to all BSCs in the location area where the MS is located through the BSC.
  • the second receiving unit 410 can receive the paging message delivered by the MSC, and the storage unit 420 can record the IMSI and TMSI carried in the paging message in the paging record.
  • the storage unit 420 can record the IMSI and TMSI carried in the paging message in the paging record.
  • the deleting unit 430 is in communication with the storage unit 420, and is configured to delete the IMSI and the TMSI that are not in the predetermined time recorded in the paging record, where the starting time of the predetermined time is the storage unit 420. Saving the IMSI and TMSI carried in the paging message at the moment in the paging record.
  • the storage unit 420 saves the IMSI and TMSI carried in the paging message in the paging message.
  • the deleting unit 430 can delete the IMSI and TMSI in the paging record that exceed a predetermined time, for example, 10 seconds.
  • the storage unit 420 separately records the paging message 0 at 9:18:57, the paging message 1 at 9:00:00, and the paging message 2 at 9:19:05 in the paging record.
  • the deleting unit 430 can delete the paging record corresponding to the paging message 0; when the current time is 9:19:11, the deleting unit 430 can The paging record corresponding to the paging message 1 is deleted; when the current time is 9:19:16, the deleting unit 430 can delete the paging record corresponding to the paging message 2.
  • the location area update and the routing area update, the class label acquisition, and the reference may be completed or partially completed.
  • Signaling interactions such as rights, encryption, identification, mobile user temporary identifier reassignment, etc. This makes the CSFB delay of the MS in the voice service initiated by the LTE longer than the CSFB in the voice service initiated by the other mobile communication system, which is difficult to meet the needs of the operator and the user.
  • the call control apparatus 400 may further include an assignment unit 440; the assignment unit 440 is in communication with the determining unit 360, and configured to: at the determining unit 360, the user equipment After determining the called user equipment of the CSFB, the independent dedicated control channel SDCCH of the called user equipment of the CSFB is reassigned to the transmission channel TCH.
  • the assigning unit 440 may reassign the channel for the MS, gp: the assigning unit 440 may The independent dedicated control channel SDCCH is adjusted to the transmission channel TCH, and the transmission rate of the TCH is twice the transmission rate of the SDCCH.
  • the call control apparatus 400 may further include a delay unit 450.
  • the delay unit 450 is in communication with the determining unit 360, and is configured to determine, at the determining unit 360, the user equipment as After the called user equipment of the CSFB, the identity signaling and/or the class label query signaling are delayed until the ringing signaling is performed.
  • the determining unit 360 after the determining unit 360 has determined that the MS is the called MS of CSFB, before receiving the ringing signaling (corresponding to step 26), it also includes signaling such as authentication, identity, TMSI reallocation, and the like. Interaction.
  • the delay unit 450 may perform the step 14 after adjusting to step 26, and may delay the identity identification signaling and/or the class label query signaling to be performed after the ringing signaling, gp: after the called connection is successfully established. The identity signaling and/or class label query signaling is performed.
  • the detecting unit may detect whether the IMSI and/or TMSI of the user equipment exists in the paging record within a predetermined time, thereby The determining unit can quickly identify whether the user equipment is the called user equipment of CSFB.
  • the detection time of the detecting unit can be reduced, and the called user equipment whose user equipment is CSFB can be further quickly identified.
  • the determining unit has determined that the user equipment is the called user equipment of the CSFB, the called user equipment SDCCH of the CSFB is reassigned to the TCH by the assigning unit, and/or the delay unit will identify the identity signaling, the class label query signaling Delayed execution after ringing signaling can speed up the establishment of the called call connection and reduce the CSFB call delay.
  • FIG. 5 is a block diagram showing the structure of a call control apparatus according to a fifth embodiment of the present invention.
  • the call control device 500 may be a host server having a computing capability, a personal computer PC, or a portable computer or terminal that can be carried.
  • the specific embodiment of the present invention does not limit the specific implementation of the computing node.
  • the call control device 500 includes a processor (English: processor) 510, a communication interface (English: Communications Interface) 520, a memory (English: memory array) 530, and a port bus 540.
  • the processor 510, the communication interface 520, and the memory 530 complete communication with each other through the bus 540.
  • the communication interface 520 is configured to communicate with a network element, where the network element includes, for example, a virtual machine management center, shared storage, and the like.
  • the processor 510 is for executing a program.
  • the processor 510 may be a central processing unit CPU, or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention.
  • ASIC application specific integrated circuit
  • the memory 530 is used to store files.
  • Memory 530 may include high speed RAM memory and may also include non-volatile memory, such as at least one disk storage.
  • Memory 530 can also be a memory array.
  • Memory 530 may also be partitioned, and the blocks may be combined into virtual volumes according to certain rules.
  • the above program may be a program code including computer operating instructions. This program can be used to:
  • the base station controller BSC receives a paging response returned by the user equipment, where the paging response carries an international mobile subscriber identity code IMSI and/or a mobile subscriber temporary identifier TMSI of the user equipment; the BSC detects its own paging record. Whether the IMSI and/or TMSI of the user equipment exists in a predetermined time;
  • the BSC determines the user equipment as a called user equipment of a circuit domain fallback CSFB.
  • the method before the BSC receives the paging response returned by the user equipment, the method further includes:
  • the BSC receives a paging message sent by the mobile switching center MSC, where the paging message carries the IMSI and the TMSI;
  • the BSC saves the IMSI and the TMSI carried in the paging message in the paging record
  • the BSC deletes the IMSI recorded in the paging record that is not within the predetermined time and TMSI, the starting time of the predetermined time is a time when the BSC saves the IMSI and the TMSI in the paging record.
  • the method further includes:
  • the BSC reassigns the independent dedicated control channel SDCCH of the called user equipment of the CSFB to the transport channel TCH.
  • the method further includes:
  • the BSC delays the identification signaling and/or class-information query signaling to the ringing signaling.
  • the BSC determines that the user equipment is not the CSFB. Call the user device.
  • the call control apparatus of the embodiment of the present invention detects whether the IMSI and/or the TMSI of the user equipment exists in the paging record within a predetermined time according to the received paging response returned by the user equipment, so that the user equipment can be quickly identified.
  • the called user device for CSFB In addition, by deleting the IMSI and TMSI that are not within the predetermined time in the paging record, the detection time of the detection unit can be reduced, and the user equipment can be further quickly identified as the called user equipment of the CSFB.
  • the determining unit If the determining unit has determined that the user equipment is the called user equipment of the CSFB, reassign the SDCCH of the called user equipment of the CSFB to the TCH, and/or delay the identification signaling, the class label query signaling to the ringing After signaling, it can speed up the establishment of the called call connection and reduce the CSFB call delay.
  • the function is implemented in the form of computer software and sold or used as a stand-alone product, it may be considered to some extent that all or part of the technical solution of the present invention (for example, a part contributing to the prior art) is It is embodied in the form of computer software products.
  • the computer software product is typically stored in a computer readable storage medium and includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of various embodiments of the present invention.
  • the foregoing storage medium includes a USB flash drive, a mobile hard disk, a read-only memory (English: Read-Only Memory, abbreviation: ROM), a random access memory (English: Random Access Memory, abbreviation: RAM), a magnetic disk or an optical disk, and the like.
  • ROM Read-Only Memory
  • RAM Random Access Memory

Abstract

本发明公开了一种呼叫控制方法及装置,其中,该呼叫控制方法包括:基站控制器BSC接收用户设备返回的寻呼响应,所述寻呼响应中携带所述用户设备的国际移动用户标识码IMSI和/或移动用户临时识别码TMSI;所述BSC检测自身的寻呼记录中在预定时间内是否存在所述用户设备的IMSI和/或TMSI;在所述BSC检测到所述寻呼记录中不存在所述用户设备的IMSI和TMSI的情况下,所述BSC将所述用户设备确定为电路域回落CSFB的被叫用户设备。本实施例的呼叫控制方法,BSC接收到用户设备返回的寻呼响应后,可以检测寻呼记录中在预定时间内是否存在该用户设备的IMSI和/或TMSI,从而可以快速的识别用户设备是否为CSFB的被叫用户设备。

Description

技术领域
本发明涉及通信技术领域, 尤其涉及一种呼叫控制方法及装置。
背景技术
虽然长期演进 (英文: Long Term Evolution, 缩写: LTE) 的发展迅猛, 但 LTE的语音业务的承载能力还不成熟。 例如: 在 LTE建网初期手机不支持 互联网协议承载语音 (英文: Voice over internet protocol, 缩写: VoIP) 、 核心网 (英文: Core Network, 缩写: CN) 没有部署 IP多媒体系统 (英文: IP Multimedia Subsystem, 缩写: IMS ) 等。 因此, LTE网络的语音业务只能 回落到 2G/3G网络, 可以采用电路域回落(英文: Circuit Switched Fall Back, 缩写: CSFB )技术。换言之, 用户设备(英文: User Equipment, 缩写: UE) 驻留在 LTE网络,呼叫建立前先回落到 2G/3G网络,由电路交换(英文: Circuit Switched, 缩写: CS ) 网络提供语音服务。
CSFB呼叫按照语音呼叫的发起和接收, 可以分为主叫和被叫; 而主叫和 被叫根据 LTE的跟踪区 (英文: Tracking Area, 缩写: TA) 和 UE回落到全 球移动通讯系统无线接入网 /通用移动通信系统陆地无线接入网 (英文: Global System for Mobile Communication Radio Access Network/Universal Mobile Telecommunications System Terrestrial Radio Access Network, 缩写 G/U) 的位置区 (英文: Location Area, 缩写: LA) 是否绑定, 可以分为跨 LA呼叫和不跨 LA呼叫。 其中, 若 TA和 LA绑定, 则为不跨 LA呼叫, 反之, 为跨 LA呼叫。 表 1为通常 CSFB语音呼叫识别方法表, 参见表 1, 在跨 LA呼叫场景时, 若 UE和网元都支持 R9协议或 R9协议以上的协议, 可以根据位置更新中的 CSMO识别 CSFB主叫, 根据 CSMT识别 CSFB被叫。 gp : 在跨 LA呼叫场景时, 只有 UE和网元都支持 R9协议或 R9协议以上的协议, 才能识别 CSFB被叫。在 不跨 LA呼叫场景时, 若 UE和网元都支持 R9协议或 R9协议以下的协议, 只能 根据服务请求中的 CSMO识别 CSFB主叫, 无法识别 CSFB被叫; 若 UE和网元 都支持 R10协议或 R10协议以上的协议, 可以根据寻呼响应中的 CSMT识别 CSFB被叫。 gp :在不跨 LA呼叫场景时,只有 UE和网元都支持 R10协议或 R10 协议以上的协议, 才能识别 CSFB被叫。
表 1 通常 CSFB语音呼叫识别方法表
Figure imgf000004_0001
综上所述, 通常的 CSFB被叫识别方法, 无法适用于各种场景。
发明内容
技术问题
有鉴于此, 本发明要解决的技术问题是, 如何在各种场景下识别 CSFB 被叫。
解决方案
为了解决上述技术问题,在第一方面,本发明提供了一种呼叫控制方法, 包括: 基站控制器 BSC接收用户设备返回的寻呼响应,所述寻呼响应中携带所 述用户设备的国际移动用户标识码 IMSI和 /或移动用户临时识别码 TMSI; 所述 BSC检测自身的寻呼记录中在预定时间内是否存在所述用户设备 的 IMSI和 /或 TMSI;
在所述 BSC检测到所述寻呼记录中不存在所述用户设备的 IMSI和 TMSI 的情况下, 所述 BSC将所述用户设备确定为电路域回落 CSFB的被叫用户设 备。
结合第一方面, 在第一种可能的实现方式中, 在所述 BSC接收用户设备 返回的寻呼响应之前, 还包括:
所述 BSC接收移动交换中心 MSC下发的寻呼消息,所述寻呼消息中携带 所述 IMSI和所述 TMSI;
所述 BSC将所述寻呼消息中携带的 IMSI和 TMSI保存在所述寻呼记录 中;
所述 BSC删除所述寻呼记录中记录的不在所述预定时间内的 IMSI和 TMSI, 所述预定时间的起始时刻为所述 BSC将所述 IMSI和所述 TMSI保存在 所述寻呼记录中的时刻。
结合第一方面或第一方面的第一种可能的实现方式,在第二种可能的实 现方式中, 在所述 BSC将所述用户设备确定为所述 CSFB的被叫用户设备之 后, 还包括:
所述 BSC将所述 CSFB的被叫用户设备的独立专用控制信道 SDCCH重 新指配到传输信道 TCH。
结合第一方面或第一方面的第一种可能的实现方式或第一方面的第二 种可能的实现方式, 在第三种可能的实现方式中, 在所述 BSC将所述用户设 备确定为所述 CSFB的被叫用户设备之后, 还包括:
所述 BSC将身份识别信令和 /或类标查询信令延迟到振铃信令之后执 行。
结合第一方面或第一方面的第一种可能的实现方式至第一方面的第三 种可能的实现方式中的任意一种实现方式,在第四种可能的实现方式中,在 所述 BSC检测到所述寻呼记录中存在所述用户设备的 IMSI和 TMSI的情况 下, 所述 BSC将所述用户设备确定为非所述 CSFB的被叫用户设备。
在第二方面, 本发明提供了一种呼叫控制装置, 包括:
第一接收单元,用于接收用户设备返回的寻呼响应,所述寻呼响应中携 带所述用户设备的国际移动用户标识码 IMSI和 /或移动用户临时识别码
TMSI;
检测单元, 与所述第一接收单元相通信,用于检测所述呼叫控制装置的 寻呼记录中在预定时间内是否存在所述用户设备的 IMSI和 /或 TMSI;
确定单元, 与所述检测单元相通信,用于在所述检测单元检测到所述寻 呼记录中不存在所述用户设备的 IMSI和 TMSI的情况下, 将所述用户设备确 定为电路域回落 CSFB的被叫用户设备。
结合第二方面,在第一种可能的实现方式中,所述呼叫控制装置还包括: 第二接收单元、 存储单元和删除单元;
所述第二接收单元用于在所述第一接收单元接收所述寻呼响应之前,接 收移动交换中心 MSC下发的寻呼消息, 所述寻呼消息中携带所述 IMSI和所 述 TMSI;
所述存储单元与所述第二接收单元相通信,用于将所述寻呼消息中携带 的 IMSI和 TMSI保存在所述寻呼记录中;
所述删除单元与所述存储单元相通信,用于删除所述寻呼记录中记录的 不在所述预定时间内的 IMSI和 TMSI, 所述预定时间的起始时刻为所述存储 单元将所述寻呼消息中携带的 IMSI和 TMSI保存在所述寻呼记录中的时刻。
结合第二方面或第二方面的第一种可能的实现方式,在第二种可能的实 现方式中, 所述呼叫控制装置还包括指配单元;
所述指配单元与所述确定单元相通信,用于在所述确定单元将所述用户 设备确定为所述 CSFB的被叫用户设备之后,将所述 CSFB的被叫用户设备的 独立专用控制信道 SDCCH重新指配到传输信道 TCH。
结合第二方面或第二方面的第一种可能的实现方式或第二方面的第二 种可能的实现方式,在第三种可能的实现方式中,所述呼叫控制装置还包括 延迟单元;
所述延迟单元与所述确定单元相通信,用于在所述确定单元将所述用户 设备确定为所述 CSFB的被叫用户设备之后, 将身份识别信令和 /或类标查询 信令延迟到振铃信令之后执行。
结合第二方面或第二方面的第一种可能的实现方式至第二方面的第三 种可能的实现方式中的任意一种实现方式,在第四种可能的实现方式中,所 述确定单元还用于在所述检测单元检测到所述寻呼记录中存在所述用户设 备的 IMSI和 TMSI的情况下,将所述用户设备确定为非所述 CSFB的被叫用户 设备。
有益效果
本实施例的呼叫控制方法, BSC接收到用户设备返回的寻呼响应后, 可 以检测寻呼记录中在预定时间内是否存在该用户设备的 IMSI和 /或 TMSI, 从 而可以快速的识别用户设备是否为 CSFB的被叫用户设备。
根据下面参考附图对示例性实施例的详细说明,本发明的其它特征及方 面将变得清楚。 附图说明
包含在说明书中并且构成说明书的一部分的附图与说明书一起示出了 本发明的示例性实施例、 特征和方面, 并且用于解释本发明的原理。 图 la为根据本发明实施例一的呼叫控制方法的流程图;
图 lb为根据本发明实施例一的 CSFB被叫信令的流程图;
图 2为根据本发明实施例二的呼叫控制方法的流程图;
图 3为根据本发明实施例三的呼叫控制装置的结构框图;
图 4为根据本发明实施例四的呼叫控制装置的结构框图; 以及
图 5为根据本发明实施例五的呼叫控制装置的结构框图。 具体实施方式
以下将参考附图详细说明本发明的各种示例性实施例、 特征和方面。 附 图中相同的附图标记表示功能相同或相似的元件。尽管在附图中示出了实施 例的各种方面, 但是除非特别指出, 不必按比例绘制附图。
在这里专用的词"示例性 "意为 "用作例子、 实施例或说明性"。 这里作为 "示例性"所说明的任何实施例不必解释为优于或好于其它实施例。
另外, 为了更好的说明本发明, 在下文的具体实施方式中给出了众多的 具体细节。 本领域技术人员应当理解, 没有这些具体细节, 本发明同样可以 实施。 在另外一些实例中, 对于大家熟知的方法、 手段、 元件和电路未作详 细描述, 以便于凸显本发明的主旨。
实施例 1
图 la为根据本发明实施例一的呼叫控制方法的流程图。 如图 la所示, 该 呼叫控制方法具体可以包括:
步骤 S100、 基站控制器 (英文: Base Station Controller, 缩写: BSC) 接收用户设备返回的寻呼响应,所述寻呼响应中携带所述用户设备的国际移 动用户标识码 (英文: International Mobile Subscriber Identity, 缩写: IMSI) 和 /或移动用户临时识别码 (英文: Temporary Mobile Station Identity, 缩写: TMSDo 例如, 图 lb为根据本发明实施例一的 CSFB被叫信令的流程图, 参见图 lb, UE亦可称为移动台 (英文: Mobile Station, 缩写: MS )。 步骤 S100之 前的寻呼过程具体可以包括: 步骤 1、 移动交换中心 (英文: Mobile Switch Center, 缩写: MSC) 可以向被寻呼的 MS所在的位置区中的所有 BSC发出 寻呼消息 (英文: paging); 步骤 2、 若 BSC接收到 MSC发送的寻呼消息, 则 BSC可以向接收到的寻呼消息中的该位置区的所有基站收发台 (英文: Base Transceiver Station, 缩写: BTS) 发出寻呼命令; 步骤 3、 若 BTS接收到 BSC 发送的寻呼命令, 贝 l」BTS可以在该寻呼所属的寻呼子信道上向 MS发出寻呼 请求; 步骤 4、 若 MS在其守候的寻呼子信道上, MS可以解码寻呼请求, 若 发现寻呼的是自己, 则向 BTS发出信道请求; 步骤 5、 BTS向 BSC发送信道要 求; 步骤 6、 BSC向 BTS发送信道激活; 步骤 7、 BTS向 BSC发送信道激活证 实; 步骤 8、 BSC向 MS发送立即指配命令 (英文: Immediate Assignment Command)。 步骤 S100对应于图 lb中的步骤 9~步骤 11, BTS向 BSC发送寻呼 响应 (英文: paging response)。 MS例如手机、 PAD等接收到 BSC发送的立 即指配命令, gPBSC为该 MS指配了信道, 贝 I」MS可以使用该被指配的信道向 BSC发送寻呼响应。 BSC可以接收到该寻呼响应, 并且, 该寻呼响应中携带 了该 MS的 IMSI和 /或 TMSI, 其中, IMSI为唯一标识该 MS的标识号。
步骤 S120、所述 BSC检测自身的寻呼记录中在预定时间内是否存在所述 用户设备的 IMSI和 /或 TMSI。
例如, 参见图 lb, 在上述步骤 1中, BSC接收到 MSC发送的寻呼消息后, 可以在自身的寻呼记录中记录该寻呼消息。 该寻呼消息可以包括消息类型、 IMSI、 TMSI和小区识别表。 该寻呼记录中除了可以记录寻呼消息中的 IMSI 和 TMSI, 还可以记录该寻呼消息下发的时间等信息。 在 BSC接收到 MS返回 的寻呼响应之后, 可以检测自身的寻呼记录, 查看该寻呼记录中是否存在预 定时间例如 10秒 (英文: second, 缩写: s) 内的 MS的 IMSI和 /或 TMSI。 例 如: 假设寻呼记录中分别记载了 9时 18分 12秒的寻呼消息 0、 9时 19分 00秒的 寻呼消息 1和 9时 19分 05秒的寻呼消息 2,预定时间为 10秒且当前时刻为 9时 19 分 08秒。 贝 I」BSC应该查找当前时刻的前 10秒内的寻呼记录, BSC可以检测上 述 3个寻呼消息中的寻呼消息 1和寻呼消息 2是否存在 MS的 IMSI和 /或 TMSI。
步骤 S140、 在所述 BSC检测到所述寻呼记录中不存在所述用户设备的 IMSI和 TMSI的情况下,所述 BSC将所述用户设备确定为电路域回落 CSFB的 被叫用户设备。
具体地, 若 BSC检测到寻呼记录中不存在该 MS的 IMSI和 TMSI, 贝 ijBSC 可以确定该 MS为 CSFB的被叫 MS。 例如: 假设寻呼记录中分别记载了 9时 18 分 12秒的寻呼消息 0、 9时 19分 00秒的寻呼消息 1和 9时 19分 05秒的寻呼消息 2, 寻呼消息 0中存在该 MS的 IMSI和 TMSI, 寻呼消息 1中不存在该 MS的 IMSI和 TMSI, 寻呼消息 2中不存在该 MS的 IMSI和 TMSI, 预定时间为 10秒且当前时 刻为 9时 19分 08秒。 贝 IjBSC可以检测寻呼消息 2和寻呼消息 3中是否存在该 MS 的 IMSI和 TMSI, 并且 BSC可以检测到寻呼消息 2和寻呼消息 3中都不存在该 MS的 IMSI和 TMSI, BSC可以确定该 MS为 CSFB的被叫 MS。
在一种可能的实现方式中, 在所述 BSC检测到所述寻呼记录中存在所述 用户设备的 IMSI和 TMSI的情况下, 所述 BSC将所述用户设备确定为非所述 CSFB的被叫用户设备。
例如, 假设寻呼记录中分别记载了 9时 18分 12秒的寻呼消息 0、 9时 19分 00秒的寻呼消息 1和 9时 19分 05秒的寻呼消息 2, 寻呼消息 0中存在该 MS的 IMSI和 TMSI, 寻呼消息 1中存在该 MS的 IMSI和 TMSI, 寻呼消息 2中存在该 MS的 IMSI和 TMSI, 预定时间为 10秒且当前时刻为 9时 19分 08秒。 则 BSC可 以检测寻呼消息 2和寻呼消息 3中是否存在该 MS的 IMSI和 TMSI, 并且 BSC可 以检测到寻呼消息 2和寻呼消息 3中都存在该 MS的 IMSI和 TMSI, BSC可以确 定该 MS为非 CSFB的被叫 MS。 本发明实施例的呼叫控制方法, BSC接收到用户设备返回的寻呼响应 后, 可以检测寻呼记录中在预定时间内是否存在该用户设备的 IMSI和 /或 TMSI, 从而可以快速的识别用户设备是否为 CSFB的被叫用户设备。
实施例 2
图 2为根据本发明实施例二的呼叫控制方法的流程图。 图 2中标号与图 la 相同的步骤具有相同的功能, 为简明起见, 省略对这些步骤的详细说明。
如图 2所示, 图 2所示的呼叫控制方法与图 la所示的呼叫控制方法的主要 区别在于,除了包括上述实施例一中的步骤 S100、步骤 S120和步骤 S140以夕卜, 在步骤 S100之前, 还可以包括:
步骤 S200、所述 BSC接收移动交换中心 MSC下发的寻呼消息,所述寻呼 消息中携带所述 IMSI和所述 TMSI。 具体示例可以参见上述实施例一中的步 骤 S100及图 lb中的相关描述。
步骤 S220、 所述 BSC将所述寻呼消息中携带的 IMSI和 TMSI保存在所述 寻呼记录中。具体示例可以参见上述实施例一中步骤 S100及图 lb中的相关描 述, 在步骤 1和步骤 2之间, BSC可以保存记录了寻呼消息中携带的 IMSI和 TMSI的寻呼记录。
具体地, 参见图 lb, 若 MS被寻呼, 则 MSC可以通过 BSC向该 MS所在的 位置区内的所有 BSC下发寻呼消息。 BSC可以接收该 MSC下发的寻呼消息, 并将该寻呼消息中携带的 IMSI和 TMSI记录在寻呼记录中。 具体示例可以参 见上述实施例一中步骤 S120和步骤 S140所举示例的相关描述。
步骤 S240、所述 BSC删除所述寻呼记录中记录的不在所述预定时间内的 IMSI和 TMSI, 所述预定时间的起始时刻为所述 BSC将所述寻呼消息中携带 的 IMSI和 TMSI保存在所述寻呼记录中的时刻。
具体地, 在 BSC将寻呼消息中携带的 IMSI和 TMSI保存在寻呼记录之后, BSC可以删除掉该寻呼记录中超出预定时间例如 10秒的 IMSI和 TMSI。 例如: 寻呼记录中分别记载了 9时 18分 57秒的寻呼消息 0、 9时 19分 00秒的寻呼消息 1 和 9时 19分 05秒的寻呼消息 2。 若预定时间为 10秒, 在当前时刻为 9时 19分 08 秒时, 可以删除寻呼消息 0对应的寻呼记录; 在当前时刻为 9时 19分 11秒时, 可以删除寻呼消息 1对应的寻呼记录; 在当前时刻为 9时 19分 16秒时, 可以删 除寻呼消息 2对应的寻呼记录。
对于 MS在 G/U进行语音呼叫业务中, CSFB用户回落到 BSC或无线网络 控制器 (英文: Radio Network Controller, 缩写: RNC) 之后, 根据网络规 划情况以及运营商的策略, 可能需要完成或部分完成位置区更新 (英文: Location Area Update,缩写: LAU )和路由区更新(英文: Routing Area Update, 缩写: RAU)、 类标获取、 鉴权、 加密、 身份识别、 移动用户临时识别码重 分配等信令交互。这使得 MS在 LTE发起的语音业务中的 CSFB时延比 MS在其 它移动通讯系统发起的语音业务中的 CSFB长, 难以满足运营商和用户感受 的需求。
在 BSC将 MS确定为 CSFB的被叫 MS之后, 可以采用以下方式进行 CSFB 时延处理:
方式一、 所述 BSC将所述 CSFB的被叫用户设备的独立专用控制信道 SDCCH重新指配到传输信道 TCH。
例如: 参见图 lb, 在步骤 18中, 若 BSC已经确定了 MS为 CSFB的被叫 MS , 贝 ijBSC可以为该 MS重新指配信道, BP : 可以将 MS的独立专用控制信 道 SDCCH调整为传输信道 TCH, TCH的传输速率为 SDCCH的传输速率的两 倍。
方式二、 所述 BSC将身份识别信令和 /或类标查询信令延迟到振铃信令 之后执行。
例如, 参见图 lb, 在 BSC已经确定了 MS为 CSFB的被叫 MS之后、 收到 振铃信令 (对应于步骤 26) 之前, 还包括鉴权、 身份识别、 TMSI重分配等 信令交互。 对于鉴权、 身份识别、 TMSI重分配等信令交互, 需要查询 MS的 IMSI、 国际移动设备身份码 (英文: International Mobile Equipment Identification Number, 缩写: IMEI) 等信息, 延长了 CSFB被叫建立连接的 时间。 可以将步骤 14调整到步骤 26之后执行, 可以将该身份识别信令和 /或 类标查询信令延迟到该振铃信令之后执行, gp :在被叫的连接成功建立之后 再执行该身份识别信令和 /或类标查询信令。
本发明实施例的呼叫控制方法, BSC接收到用户设备返回的寻呼响应 后, 可以检测寻呼记录中在预定时间内是否存在该用户设备的 IMSI和 /或 TMSI, 从而可以快速的识别用户设备是否为 CSFB的被叫用户设备。 此外, 通过删除寻呼记录中不在预定时间内的 IMSI和 TMSI, 可以降低 BSC的检测 时间, 可以进一步快速识别用户设备是否为 CSFB的被叫用户设备。 若 BSC 已确定用户设备为 CSFB的被叫用户设备, 通过将该 CSFB的被叫用户设备的 SDCCH重新指配到 TCH, 和 /或将身份识别信令、 类标查询信令延迟到振铃 信令之后执行, 可以加快建立被叫呼叫连接, 减少 CSFB的呼叫时延。
实施例 3
图 3为根据本发明实施例三的呼叫控制装置的结构框图。 本实施例的呼 叫控制装置 300用于实现图 la所示的实施例一的呼叫控制方法。 如图 3所示, 该呼叫控制装置 300具体可以包括:
第一接收单元 320, 用于接收用户设备返回的寻呼响应, 所述寻呼响应 中携带所述用户设备的国际移动用户标识码 IMSI和 /或移动用户临时识别码 TMSIo
具体地, 该呼叫控制装置 300可以为 BSC。 例如, 参见图 lb, UE亦可称 为 MS。 在第一接收单元 320接收 MS返回的寻呼响应之前, MSC可以向被寻 呼的 MS所在的位置区中的所有 BSC发出寻呼消息, 若 BSC接收到 MSC发送 的寻呼消息, 贝 l」BSC可以向接收到的寻呼消息中的该位置区的所有 BTS发出 寻呼命令。 若 BTS接收到 BSC发送的该寻呼命令, 贝 ijBTS可以在该寻呼所属 的寻呼子信道上向 MS发出寻呼请求。若 MS在其守候的寻呼子信道上, 通过 对寻呼消息的解码发现寻呼的是自己,贝 l」MS可以向 BTS发出信道请求。 BTS 接收到 MS发送的信道请求之后, 可以向 BSC发送信道要求。 若 BSC接收到 BTS发送的信道要求, 贝 l」BSC可以向 BTS发送信道激活。 BTS可以向 BSC返 回信道激活证实, BSC可以向 MS发送立即指配命令。 同时, BSC的第一接 收单元 320可以接收 MS发送的寻呼响应。 MS例如手机、 PAD等接收到 BSC 发送的立即指配命令, 即 BSC为该 MS指配了信道, 贝 IJMS可以使用该被指配 的信道向 BSC发送寻呼响应。 BSC的第一接收单元 320可以接收到该寻呼响 应, 并且, 该寻呼响应中携带了该 MS的 IMSI和 /或 TMSI, 其中, IMSI为唯 一标识该该 MS的标识号。
检测单元 340, 与所述第一接收单元 320相通信,用于检测所述呼叫控制 装置的寻呼记录中在预定时间内是否存在所述用户设备的 IMSI和 /或 TMSI。
例如, 参见图 lb, BSC接收到 MSC发送的寻呼消息后, 可以在寻呼记录 中记录该寻呼消息。 该寻呼消息可以包括消息类型、 IMSI、 TMSI和小区识 别表。 该寻呼记录中除了可以记录寻呼消息中的 IMSI和 TMSI, 还可以记录 该寻呼消息下发的时间等信息。在 BSC的第一接收单元 320接收到 MS返回的 寻呼响应之后, 检测单元 340可以检测 BSC的寻呼记录, 查看该寻呼记录中 是否存在预定时间例如 10秒 (s) 内的 MS的 IMSI和 /或 TMSI。 例如: 假设寻 呼记录中分别记载了 9时 18分 12秒的寻呼消息 0、 9时 19分 00秒的寻呼消息 1 和 9时 19分 05秒的寻呼消息 2, 预定时间为 10秒且当前时刻为 9时 19分 08秒。 则检测单元 340应该查找当前时刻的前 10秒内的寻呼记录, 可以检测上述 3 个寻呼消息中的寻呼消息 1和寻呼消息 2是否存在 MS的 IMSI和 /或 TMSI。
确定单元 360, 与所述检测单元 340相通信, 用于在所述检测单元 340检 测到所述寻呼记录中不存在所述用户设备的 IMSI和 TMSI的情况下, 将所述 用户设备确定为电路域回落 CSFB的被叫用户设备。
具体地, 若检测单元 340检测到寻呼记录中不存在该 MS的 IMSI和 TMSI, 则确定单元 360可以确定该 MS为 CSFB的被叫 MS。 例如: 假设寻呼记录中分 别记载了 9时 18分 12秒的寻呼消息 0、 9时 19分 00秒的寻呼消息 1和 9时 19分 05 秒的寻呼消息 2, 寻呼消息 0中存在该 MS的 IMSI和 TMSI, 寻呼消息 1中不存 在该 MS的 IMSI和 TMSI, 寻呼消息 2中不存在该 MS的 IMSI和 TMSI, 预定时 间为 10秒且当前时刻为 9时 19分 08秒。 则检测单元 340可以检测寻呼消息 2和 寻呼消息 3中是否存在该 MS的 IMSI和 TMSI, 并且检测单元 340可以检测到寻 呼消息 2和寻呼消息 3中都不存在该 MS的 IMSI和 TMSI, 确定单元 360可以确 定该 MS为 CSFB的被叫 MS。
在一种可能的实现方式中,所述确定单元 360还用于在所述检测单元 340 检测到所述寻呼记录中存在所述用户设备的 IMSI和 TMSI的情况下, 将所述 用户设备确定为非所述 CSFB的被叫用户设备。
例如, 假设寻呼记录中分别记载了 9时 18分 12秒的寻呼消息 0、 9时 19分 00秒的寻呼消息 1和 9时 19分 05秒的寻呼消息 2, 寻呼消息 0中存在该 MS的 IMSI和 TMSI, 寻呼消息 1中存在该 MS的 IMSI和 TMSI, 寻呼消息 2中存在该 MS的 IMSI和 TMSI, 预定时间为 10秒且当前时刻为 9时 19分 08秒。 则检测单 元 340可以检测寻呼消息 2和寻呼消息 3中是否存在该 MS的 IMSI和 TMSI, 并 且检测单元 340可以检测到寻呼消息 2和寻呼消息 3中都存在该 MS的 IMSI和 TMSI, 确定单元 360可以确定该 MS为非 CSFB的被叫 MS。
本发明实施例的呼叫控制装置,第一接收单元接收到用户设备返回的寻 呼响应后,检测单元可以检测寻呼记录中在预定时间内是否存在该用户设备 的 IMSI和 /或 TMSI,从而确定单元可以快速的识别用户设备是否为 CSFB的被 叫用户设备。
实施例 4 图 4为根据本发明实施例四的呼叫控制装置的结构框图。 本实施例的呼 叫控制装置 400用于实现图 2所示的实施例二的呼叫控制方法。 其中, 图 4中 与图 3标号相同的组件,包括第一接收单元 320、检测单元 340和确定单元 360, 具有与前述基本相同的功能, 为简明起见, 省略对这些组件的详细说明。
此外, 通过比较图 3和图 4可知, 图 4所示的呼叫控制装置 400与图 3所示 的呼叫控制装置 300的主要区别在于, 该呼叫控制装置 400还可以包括: 第二 接收单元 410、 存储单元 420和删除单元 430;
所述第二接收单元 410用于在所述第一接收单元 320接收所述寻呼响应 之前, 接收移动交换中心 MSC下发的寻呼消息, 所述寻呼消息中携带所述 IMSI和所述 TMSI。 具体示例可以参见上述实施例一中步骤 S100及图 lb中的 相关描述。
所述存储单元 420与所述第二接收单元 410相通信,用于将所述寻呼消息 中携带的 IMSI和 TMSI保存在所述寻呼记录中。 具体示例可以参见上述实施 例一中步骤 S100及图 lb中的相关描述, 在步骤 1和步骤 2之间, 存储单元 420 可以保存记录了寻呼消息中携带的 IMSI和 TMSI的寻呼记录。
具体地, 该呼叫控制装置 400可以为 BSC。 参见图 lb, 若 MS被寻呼, 则 MSC可以通过 BSC向该 MS所在的位置区内的所有 BSC下发寻呼消息。 第二 接收单元 410可以接收该 MSC下发的寻呼消息,存储单元 420可以将该寻呼消 息中携带的 IMSI和 TMSI记录在寻呼记录中。 具体示例可以参见上述实施例 一中步骤 S120和步骤 S140所举示例的相关描述。
所述删除单元 430与所述存储单元 420相通信,用于删除所述寻呼记录中 记录的不在所述预定时间内的 IMSI和 TMSI, 所述预定时间的起始时刻为所 述存储单元 420将所述寻呼消息中携带的 IMSI和 TMSI保存在所述寻呼记录 中的时刻。
具体地,在存储单元 420将寻呼消息中携带的 IMSI和 TMSI保存在寻呼记 录之后, 删除单元 430可以删除掉该寻呼记录中超出预定时间例如 10秒的 IMSI和 TMSI。 例如: 存储单元 420在寻呼记录中分别记载了 9时 18分 57秒的 寻呼消息 0、 9时 19分 00秒的寻呼消息 1和 9时 19分 05秒的寻呼消息 2。 若预定 时间为 10秒, 在当前时刻为 9时 19分 08秒时, 删除单元 430可以删除寻呼消息 0对应的寻呼记录; 在当前时刻为 9时 19分 11秒时, 删除单元 430可以删除寻 呼消息 1对应的寻呼记录; 在当前时刻为 9时 19分 16秒时, 删除单元 430可以 删除寻呼消息 2对应的寻呼记录。
对于 MS在 G/U进行语音呼叫业务中, CSFB用户回落到 BSC或 RNC之后, 根据网络规划情况以及运营商的策略,可能需要完成或部分完成位置区更新 和路由区更新、 类标获取、 鉴权、 加密、 身份识别、 移动用户临时识别码重 分配等信令交互。这使得 MS在 LTE发起的语音业务中的 CSFB时延比 MS在其 它移动通讯系统发起的语音业务中的 CSFB长, 难以满足运营商和用户感受 的需求。
在一种可能的实现方式中, 该呼叫控制装置 400还可以包括指配单元 440; 所述指配单元 440与所述确定单元 360相通信, 用于在所述确定单元 360 将所述用户设备确定为所述 CSFB的被叫用户设备之后, 将所述 CSFB的被叫 用户设备的独立专用控制信道 SDCCH重新指配到传输信道 TCH。
例如: 参见图 lb, 在步骤 18中, 若确定单元 360已经确定了 MS为 CSFB 的被叫 MS , 则指配单元 440可以为该 MS重新指配信道, gp : 指配单元 440 可以将 MS的独立专用控制信道 SDCCH调整为传输信道 TCH, TCH的传输速 率为 SDCCH的传输速率的两倍。
在一种可能的实现方式中, 该呼叫控制装置 400还可以包括延迟单元 450; 所述延迟单元 450与所述确定单元 360相通信, 用于在所述确定单元 360 将所述用户设备确定为所述 CSFB的被叫用户设备之后, 将身份识别信令和 / 或类标查询信令延迟到振铃信令之后执行。 例如,参见图 lb,在确定单元 360已经确定了 MS为 CSFB的被叫 MS之后、 收到振铃信令 (对应于步骤 26) 之前, 还包括鉴权、 身份识别、 TMSI重分 配等信令交互。 对于鉴权、 身份识别、 TMSI重分配等信令交互, 需要查询 MS的 IMSI、 IMEI等信息, 延长了 CSFB被叫建立连接的时间。 延迟单元 450 可以将步骤 14调整到步骤 26之后执行, 可以将该身份识别信令和 /或类标查 询信令延迟到该振铃信令之后执行, gp :在被叫的连接成功建立之后再执行 该身份识别信令和 /或类标查询信令。
本发明实施例的呼叫控制装置,根据第一接收单元接收到的用户设备返 回的寻呼响应, 检测单元可以检测寻呼记录中在预定时间内是否存在该用户 设备的 IMSI和 /或 TMSI,从而确定单元可以快速的识别用户设备是否为 CSFB 的被叫用户设备。 此外, 通过删除单元删除寻呼记录中不在预定时间内的 IMSI和 TMSI, 可以降低检测单元的检测时间, 可以进一步快速识别用户设 备为 CSFB的被叫用户设备。 若确定单元已确定用户设备为 CSFB的被叫用户 设备, 通过指配单元将该 CSFB的被叫用户设备 SDCCH重新指配到 TCH, 和 / 或延迟单元将身份识别信令、 类标查询信令延迟到振铃信令之后执行, 可以 加快建立被叫呼叫连接, 减少 CSFB的呼叫时延。
实施例 5
图 5为根据本发明实施例五的呼叫控制装置的结构框图。 所述呼叫控制 装置 500可以是具备计算能力的主机服务器、 个人计算机 PC、 或者可携带的 便携式计算机或终端等。本发明具体实施例并不对计算节点的具体实现做限 定。
所述呼叫控制装置 500包括处理器 (英文: processor)510、通信接口 (英文: Communications Interface)520、 存储器 (英文: memory array)530禾口总线 540。 其中, 处理器 510、 通信接口 520、 以及存储器 530通过总线 540完成相互间的 通信。 通信接口 520用于与网元通信, 其中网元包括例如虚拟机管理中心、 共 享存储等。
处理器 510用于执行程序。 处理器 510可能是一个中央处理器 CPU, 或者 是专用集成电路(英文: Application Specific Integrated Circuit,缩写: ASIC), 或者是被配置成实施本发明实施例的一个或多个集成电路。
存储器 530用于存放文件。存储器 530可能包含高速 RAM存储器,也可能 还包括非易失性存储器 (英文: non- volatile memory), 例如至少一个磁盘存储 器。 存储器 530也可以是存储器阵列。 存储器 530还可能被分块, 并且所述块 可按一定的规则组合成虚拟卷。
在一种可能的实现方式中, 上述程序可为包括计算机操作指令的程序代 码。 该程序具体可用于:
基站控制器 BSC接收用户设备返回的寻呼响应,所述寻呼响应中携带所 述用户设备的国际移动用户标识码 IMSI和 /或移动用户临时识别码 TMSI; 所述 BSC检测自身的寻呼记录中在预定时间内是否存在所述用户设备 的 IMSI和 /或 TMSI;
在所述 BSC检测到所述寻呼记录中不存在所述用户设备的所述 IMSI和 TMSI的情况下, 所述 BSC将所述用户设备确定为电路域回落 CSFB的被叫用 户设备。
在一种可能的实现方式中,在所述 BSC接收用户设备返回的寻呼响应之 前, 还包括 Γ
所述 BSC接收移动交换中心 MSC下发的寻呼消息,所述寻呼消息中携带 所述 IMSI和所述 TMSI;
所述 BSC将所述寻呼消息中携带的 IMSI和 TMSI保存在所述寻呼记录 中;
所述 BSC删除所述寻呼记录中记录的不在所述预定时间内的 IMSI和 TMSI, 所述预定时间的起始时刻为所述 BSC将所述 IMSI和所述 TMSI保存在 所述寻呼记录中的时刻。
在一种可能的实现方式中, 在所述 BSC将所述用户设备确定为所述 CSFB的被叫用户设备之后, 还包括:
所述 BSC将所述 CSFB的被叫用户设备的独立专用控制信道 SDCCH重 新指配到传输信道 TCH。
在一种可能的实现方式中, 在所述 BSC将所述用户设备确定为所述 CSFB的被叫用户设备之后, 还包括:
所述 BSC将身份识别信令和 /或类标查询信令延迟到振铃信令之后执 行。
在一种可能的实现方式中,在所述 BSC检测到所述寻呼记录中存在所述 用户设备的 IMSI和 TMSI的情况下, 所述 BSC将所述用户设备确定为非所述 CSFB的被叫用户设备。
本发明实施例的呼叫控制装置, 根据接收到的用户设备返回的寻呼响 应, 检测寻呼记录中在预定时间内是否存在该用户设备的 IMSI和 /或 TMSI, 从而可以快速的识别用户设备是否为 CSFB的被叫用户设备。 此外, 通过删 除寻呼记录中不在预定时间内的 IMSI和 TMSI, 可以降低检测单元的检测时 间, 可以进一步快速识别用户设备是否为 CSFB的被叫用户设备。 若确定单 元已确定用户设备为 CSFB的被叫用户设备, 通过将该 CSFB的被叫用户设备 的 SDCCH重新指配到 TCH, 和 /或将身份识别信令、 类标查询信令延迟到振 铃信令之后执行, 可以加快建立被叫呼叫连接, 减少 CSFB的呼叫时延。
本领域普通技术人员可以意识到,本文所描述的实施例中的各示例性单 元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。 这些功能究竟以硬件还是软件形式来实现,取决于技术方案的特点应用和设 计约束条件。专业技术人员可以针对特定的应用选择不同的方法来实现所描 述的功能, 但是这种实现不应认为超出本发明的范围。
如果以计算机软件的形式来实现所述功能并作为独立的产品销售或使 用时, 则在一定程度上可以认为本发明的技术方案的全部或部分(例如对现 有技术做出贡献的部分)是以计算机软件产品的形式体现的。该计算机软件 产品通常存储在计算机可读取的存储介质中,包括若干指令用以使得计算机 设备(可以是个人计算机、 服务器、 或者网络设备等)执行本发明各实施例 方法的全部或部分步骤。 而前述的存储介质包括 U盘、 移动硬盘、 只读存储 器(英文: Read-Only Memory,缩写: ROM)、随机存取存储器(英文: Random Access Memory, 缩写: RAM)、 磁碟或者光盘等各种可以存储程序代码的 介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替代, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应所述以权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种呼叫控制装置, 其特征在于, 包括:
第一接收单元,用于接收用户设备返回的寻呼响应,所述寻呼响应中携 带所述用户设备的国际移动用户标识码 IMSI和 /或移动用户临时识别码 TMSI;
检测单元, 与所述第一接收单元相通信,用于检测所述呼叫控制装置的 寻呼记录中在预定时间内是否存在所述用户设备的 IMSI和 /或 TMSI;
确定单元, 与所述检测单元相通信,用于在所述检测单元检测到所述寻 呼记录中不存在所述用户设备的 IMSI和 TMSI的情况下, 将所述用户设备确 定为电路域回落 CSFB的被叫用户设备。
2、 根据权利要求 1所述的呼叫控制装置, 其特征在于, 还包括: 第二接 收单元、 存储单元和删除单元;
所述第二接收单元用于在所述第一接收单元接收所述寻呼响应之前,接 收移动交换中心 MSC下发的寻呼消息, 所述寻呼消息中携带所述 IMSI和所 述 TMSI;
所述存储单元与所述第二接收单元相通信,用于将所述寻呼消息中携带 的 IMSI和 TMSI保存在所述寻呼记录中;
所述删除单元与所述存储单元相通信,用于删除所述寻呼记录中记录的 不在所述预定时间内的 IMSI和 TMSI, 所述预定时间的起始时刻为所述存储 单元将所述寻呼消息中携带的 IMSI和 TMSI保存在所述寻呼记录中的时刻。
3、 根据权利要求 1或 2所述的呼叫控制装置, 其特征在于, 还包括指配 单元;
所述指配单元与所述确定单元相通信,用于在所述确定单元将所述用户 设备确定为所述 CSFB的被叫用户设备之后,将所述 CSFB的被叫用户设备的 独立专用控制信道 SDCCH重新指配到传输信道 TCH。
4、 根据权利要求 1至 3中任一项所述的呼叫控制装置, 其特征在于, 还 包括延迟单元;
所述延迟单元与所述确定单元相通信,用于在所述确定单元将所述用户 设备确定为所述 CSFB的被叫用户设备之后, 将身份识别信令和 /或类标查询 信令延迟到振铃信令之后执行。
5、 根据权利要求 1至 4中任一项所述的呼叫控制装置, 其特征在于, 所 述确定单元还用于,在所述检测单元检测到所述寻呼记录中存在所述用户设 备的 IMSI和 TMSI的情况下,将所述用户设备确定为非所述 CSFB的被叫用户 设备。
6、 一种呼叫控制方法, 其特征在于, 包括:
基站控制器 BSC接收用户设备返回的寻呼响应,所述寻呼响应中携带所 述用户设备的国际移动用户标识码 IMSI和 /或移动用户临时识别码 TMSI; 所述 BSC检测自身的寻呼记录中在预定时间内是否存在所述用户设备 的 IMSI和 /或 TMSI;
在所述 BSC检测到所述寻呼记录中不存在所述用户设备的 IMSI和 TMSI 的情况下, 所述 BSC将所述用户设备确定为电路域回落 CSFB的被叫用户设 备。
7、 根据权利要求 6所述的呼叫控制方法, 其特征在于, 在所述 BSC接收 用户设备返回的寻呼响应之前, 还包括:
所述 BSC接收移动交换中心 MSC下发的寻呼消息,所述寻呼消息中携带 所述 IMSI和所述 TMSI;
所述 BSC将所述寻呼消息中携带的 IMSI和 TMSI保存在所述寻呼记录 中;
所述 BSC删除所述寻呼记录中记录的不在所述预定时间内的 IMSI和 TMSI, 所述预定时间的起始时刻为所述 BSC将所述 IMSI和所述 TMSI保存在 所述寻呼记录中的时刻。
8、 根据权利要求 6或 7所述的呼叫控制方法, 其特征在于, 在所述 BSC 将所述用户设备确定为所述 CSFB的被叫用户设备之后, 还包括:
所述 BSC将所述 CSFB的被叫用户设备的独立专用控制信道 SDCCH重 新指配到传输信道 TCH。
9、 根据权利要求 6至 8中任一项所述的呼叫控制方法, 其特征在于, 在 所述 BSC将所述用户设备确定为所述 CSFB的被叫用户设备之后, 还包括: 所述 BSC将身份识别信令和 /或类标查询信令延迟到振铃信令之后执 行。
10、根据权利要求 6至 9中任一项所述的呼叫控制方法, 其特征在于, 在 所述 BSC检测到所述寻呼记录中存在所述用户设备的 IMSI和 TMSI的情况 下, 所述 BSC将所述用户设备确定为非所述 CSFB的被叫用户设备。
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