CN109246632B - Call method and device, computer readable storage medium, base station and terminal - Google Patents

Call method and device, computer readable storage medium, base station and terminal Download PDF

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Publication number
CN109246632B
CN109246632B CN201710407550.9A CN201710407550A CN109246632B CN 109246632 B CN109246632 B CN 109246632B CN 201710407550 A CN201710407550 A CN 201710407550A CN 109246632 B CN109246632 B CN 109246632B
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terminal
service type
service
volte
switching process
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CN109246632A (en
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钱民乾
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection

Abstract

The invention provides a communication method and a device, a computer readable storage medium, a base station and a terminal, wherein the communication method comprises the following steps: before the VOLTE special bearer is established, determining the service type of a terminal; if the service type of the terminal is VOLTE service, configuring switching information, wherein the switching information is used for switching a flow, and the switching flow is used for ensuring the continuity of voice service; and judging whether to trigger the switching process or not based on the switching information. The technical scheme of the invention can improve the quality of VOLTE.

Description

Call method and device, computer readable storage medium, base station and terminal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communication method and apparatus, a computer-readable storage medium, a base station, and a terminal.
Background
In the field of communication technology, voice call is an indispensable service function in daily communication process, and is also an important income source for operators. How to guarantee voice call quality is an important research topic in the communication technology field.
Voice Over LTE (VOLTE) based on IMS is one of Voice call services, and in order to ensure continuity of VOLTE services, various handover procedures are provided in the prior art, for example, SRVCC handover procedures under multiple scenes are provided.
However, the quality of VOLTE service still needs to be improved.
Disclosure of Invention
The invention solves the technical problem of improving the quality of VOLTE service.
To solve the foregoing technical problem, an embodiment of the present invention provides a call method, including: before the VOLTE special bearer is established, determining the service type of a terminal; if the service type of the terminal is VOLTE service, configuring switching information, wherein the switching information is used for switching a process, and the switching process is used for ensuring the continuity of the VOLTE service; and judging whether to trigger the switching process or not based on the switching information.
Optionally, before determining the service type of the terminal, the method further includes: receiving an RRC establishment request, wherein the RRC establishment request carries parameters for expressing the service type; wherein the service type of the terminal is determined by a parameter representing the service type.
Optionally, the terminal is a calling party terminal or a called party terminal, and the RRC establishment request is from the calling party terminal or the called party terminal.
Optionally, before determining the service type of the terminal, the method further includes: receiving a non-access stratum message, wherein the non-access stratum message comprises a parameter used for expressing the service type of a terminal; and determining the service type of the terminal according to the parameter for representing the service type of the terminal.
Optionally, the terminal is a calling party terminal or a called party terminal, and the non-access stratum message is from the calling party terminal or the called party terminal.
Optionally, the type of the VOLTE service includes a calling VOLTE service or a called VOLTE service, and the switching information is configured according to the type of the VOLTE service.
Optionally, the terminal is a called party terminal, and before determining the service type of the terminal, the method further includes: receiving a message from an MME, wherein the message from the MME comprises an identification mark of the terminal; and determining the service type of the terminal as called VOLTE service according to the message from the MME.
Optionally, the handover procedure includes any one of: a redirection handover procedure, an SRVCC handover procedure, and a PS handover procedure.
Optionally, when it is determined by the judgment that the redirection handover procedure or the PS handover procedure is triggered, the call method further includes: a call setup procedure is initiated.
Optionally, before determining whether to trigger the handover procedure based on the handover information, the method further includes: receiving a measurement report; the determining whether to trigger the handover procedure based on the handover information includes: and judging whether to trigger the switching process or not by combining the switching information and the measurement report.
The embodiment of the invention also provides a communication method, which comprises the following steps: before the VOLTE special bearer is established, reporting the service type to an access network so that the access network determines the service type of a terminal; and receiving an indication of an access network to perform a switching process, wherein the switching process is used for ensuring the continuity of the VOLTE service.
Optionally, reporting the service type to the access network includes any one of the following: reporting the service type to an access network through an RRC connection request; and reporting the service type to the access network through the non-access layer message.
Optionally, before reporting the service type to the access network, the method further includes: receiving a message from an MME to determine the traffic type.
Optionally, the call method further includes: and when the switching process is a redirection switching process or a PS switching process, initiating a call establishment process.
An embodiment of the present invention further provides a communication device, including: the service type determining unit is suitable for determining the service type of the terminal before the VOLTE special bearer is established; the switching information configuration unit is suitable for configuring switching information when the service type of the terminal is VOLTE service, wherein the switching information is used for switching process, and the switching process is used for ensuring the continuity of the VOLTE service; and the judging unit is suitable for judging whether to trigger the switching process based on the switching information.
Optionally, the communication device further includes: the RRC establishment request receiving unit is suitable for receiving an RRC establishment request before determining the service type of the terminal, wherein the RRC establishment request carries a parameter for expressing the service type; wherein the service type determination unit is adapted to determine the service type of the terminal by means of a parameter indicative of the service type.
Optionally, the terminal is a calling party terminal or a called party terminal, and the RRC establishment request is from the calling party terminal or the called party terminal.
Optionally, the communication device further includes: a non-access stratum message receiving unit, which is suitable for receiving a non-access stratum message before determining the terminal service type, wherein the non-access stratum message comprises a parameter used for representing the terminal service type; the service type determining unit determines the service type of the terminal according to the parameter for representing the service type of the terminal.
Optionally, the terminal is a calling party terminal or a called party terminal, and the non-access stratum message is from the calling party terminal or the called party terminal.
Optionally, the type of the VOLTE service includes a calling VOLTE service or a called VOLTE service, and the switching information is configured according to the type of the VOLTE service.
Optionally, the terminal is a called terminal, and the communication device further includes an MME message receiving unit adapted to receive a message from an MME before determining a service type of the terminal, where the message from the MME includes an identification identifier of the terminal; and determining the service type of the terminal as called VOLTE service according to the message from the MME.
Optionally, the handover procedure includes any one of: a redirection handover procedure, an SRVCC handover procedure, and a PS handover procedure.
Optionally, the communication device further includes: and the call establishment initiating unit is suitable for initiating a call establishment process when the switching process is a redirection switching process or a PS switching process.
Optionally, the communication device further includes: a measurement report receiving unit adapted to receive a measurement report before determining whether to trigger the handover procedure based on the handover information; the judging unit is adapted to judge whether to trigger the handover procedure in combination with the handover information and the measurement report.
An embodiment of the present invention further provides another communication device, including: the service type reporting unit is suitable for reporting the service type to the access network before the VOLTE special bearer is established so that the access network determines the service type of the terminal; and the switching unit is suitable for receiving the indication of the access network so as to perform a switching process, wherein the switching process is used for ensuring the continuity of the VOLTE service.
Optionally, the service type reporting unit is adapted to report the service type to the access network by any one of the following manners: reporting the service type to an access network through an RRC connection request; and reporting the service type to the access network through the non-access layer message.
Optionally, the communication device further includes: and the message receiving unit is suitable for receiving a message from the MME to determine the service type.
Optionally, the communication device further includes: and the call establishment initiating unit is suitable for initiating a call establishment process when the switching process is a redirection switching process or a PS switching process.
The embodiment of the invention also provides a computer readable storage medium, which stores computer instructions, and the computer instructions execute the steps of the communication method when running.
The embodiment of the invention also provides a computer readable storage medium, which stores computer instructions, and the computer instructions execute the steps of the communication method when running.
The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the call method when executing the computer instructions.
The embodiment of the invention also provides a terminal, which comprises a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor, and the processor executes the steps of the communication method when running the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, before the VOLTE special bearer is established, the service type of the terminal is determined, and when the service type of the terminal is VOLTE service, the switching information is configured, and whether to trigger the switching process is judged based on the switching information. Because the handover process in the VOLTE service is usually triggered by the base station, if the base station does not know the service type of the terminal, the handover process cannot be triggered, and the call quality cannot be ensured. Therefore, before the VOLTE special bearer is established, the service type of the terminal is determined, when the service type of the terminal is VOLTE service, the switching information is configured and whether the switching process is triggered or not is judged, the judgment whether the switching process is triggered or not can be carried out before the VOLTE special bearer is established, and the conversation quality of the VOLTE service can be improved.
Drawings
Fig. 1 is a flow chart of a call method applicable to a base station in an embodiment of the present invention;
Fig. 2 is a flow chart of another call method applied to a base station in the embodiment of the present invention;
fig. 3 is a flowchart of another communication method applied to a base station in the embodiment of the present invention;
fig. 4 is a flow chart of still another communication method applicable to a base station in the embodiment of the present invention;
fig. 5 is a flowchart of a new call method applied to a base station in an embodiment of the present invention;
fig. 6 is a flow chart of a call method applicable to a terminal in an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a communication device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a terminal in an embodiment of the present invention.
Detailed Description
As mentioned above, in the field of communication technology, voice call is an indispensable business function in daily communication, and is also an important income source for operators. How to guarantee voice call quality is an important research topic in the communication technology field. In order to ensure the continuity of the voice service, various switching procedures are provided in the prior art. However, the quality of voice service still remains to be improved.
The inventor researches and discovers that the existing switching process can comprise a process of switching with a cell in an LTE network or a process of switching the LTE network to a 2G \3G circuit domain. From another perspective, the existing handover procedure may include a handover procedure applicable to the calling party or a handover procedure applicable to both the calling party and the called party.
Specifically, the existing handover procedure may include Circuit Switched Fallback (CSFB), Single Radio Voice Call Continuity (SRVCC), Radio Resource Control (RRC) redirection, cell handover for Packet Switched (PS), and the like.
The cs fallback is initiated by the terminal, and is generally used in a process in which the terminal preferentially utilizes a 2G/3G network to perform a voice call, and the terminal performs a voice call by utilizing the 2G/3G network and returns to the LTE network after the voice call is completed.
SRVCC may include base SRVCC, aSRVCC, bsrvvcc, eSRVCC, and the like types. VOLTE calls can smoothly switch calls in different periods to a CS domain under 2G/3G through SRVCC and the like to carry out voice services.
However, the CS domain fallback is that voice services are performed in the CS domain from the call initiation to the call termination, and the SRVCC handover is triggered after the VOLTE dedicated bearer is established.
In summary, before the dedicated bearer for VOLTE is established, if the terminal performs the VOLTE service, there is no available handover procedure, and the continuity of the voice service is difficult to be guaranteed before the dedicated bearer for VOLTE is established.
In the embodiment of the invention, before the VOLTE special bearer is established, the service type of the terminal is determined, and when the service type of the terminal is VOLTE service, the switching information is configured, and whether to trigger the switching process is judged based on the switching information.
Because the handover process is usually triggered by the base station during the voice service, if the base station does not know the service type of the terminal, the handover process cannot be triggered, and the call quality cannot be ensured. Therefore, before the VOLTE special bearer is established, the service type of the terminal is determined, when the service type of the terminal is VOLTE service, the switching information is configured and whether the switching process is triggered or not is judged, the judgment whether the switching process is triggered or not can be carried out before the VOLTE special bearer is established, and the conversation quality of the voice service can be improved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a flowchart of a call method in an embodiment of the present invention, which is applicable to a base station, and specifically includes the following steps:
step S11, before the VOLTE special bearing is established, the service type of the terminal is determined;
step S12, if the service type of the terminal is VOLTE service, configuring switching information, wherein the switching information is used for switching process, and the switching process is used for ensuring the continuity of voice service;
step S13, determining whether to trigger the handover procedure based on the handover information.
The terminal can be a calling party terminal or a called party terminal, the service type of the terminal can be a calling VOLTE service or a called VOLTE service, and the switching information can be configured according to the type of the VOLTE service so as to determine the specific switching process needing to be triggered.
Determining the service type of the terminal may be determined based on information received by the base station, and specifically may be determined according to information received from the terminal, or may be determined according to information received from a Mobility Management Entity (MME). The information received from the terminal may be received through an RRC setup request or through a non-access stratum message.
When the terminal is in an idle state, the base station can receive the information through an RRC establishment request; when the terminal is in a connected state, the base station can receive the information through a non-access stratum message. The above information may be received from the MME when the terminal is a called party terminal. The following description is made separately.
Referring to fig. 2, the base station receives information through an RRC setup request. Before step S11, the call method in the embodiment of the present invention may further include:
step S21, receiving an RRC establishment request, where the RRC establishment request carries a parameter for indicating the service type.
In a specific implementation of step S11, the service type of the terminal is determined by a parameter indicating the service type carried in the RRC setup request.
In step S21, an RRC connection request may be received from a terminal in an idle state. Here, the terminal in the idle state may be a calling party terminal or a called party terminal.
The parameter indicating the service type may carry a VOLTE MO/MT indication to indicate that the terminal is a calling party terminal or a called party terminal.
The RRC setup request may be from either the calling party terminal or the called party terminal. When the RRC establishment request comes from a calling party terminal, the RRC establishment request can carry VOLTE MO indication; the VOLTE MT indication may be carried when the RRC setup request comes from the called party terminal.
Specifically, when the RRC establishment request is from the calling party terminal, the VOLTE MO indication may be carried by using the existing parameter MO-VoiceCall-v1280 in the 3GPP protocol. The parameter mo-VoiceCall-v1280 is newly added in 3GPP TS 36.331CR1931 and is located in an Establishment Cause information element (Establishment Cause IE) of an RRC Establishment Request message (RRC Connection Request). The parameter is used for the network to decide whether to preferentially allow the access to the RRC request initiated by the VOLTE according to the parameter under the condition of network congestion and the like, and the parameter can be multiplexed by the invention.
When the RRC establishment request is from the called terminal, an enumeration value may be added in the RRC establishment request establishment cause information unit to carry the VOLTE MT indication. When the terminal is the called party terminal, the MME may notify the called party terminal that it is notified as the VOLTE service, so that the terminal may notify the base station of the service type, for example, the terminal may be notified by a paging message.
As can be seen from the above description of the parameter indicating the service type, the existing parameter may be reused, or an enumeration value may be added to indicate the service type of the terminal.
Referring to fig. 3, a base station receives information through a Non-access stratum (NAS) message. Before step S11, the call method in the embodiment of the present invention may further include:
step S31, receiving a non-access stratum message, where the non-access stratum message includes a parameter for indicating a service type of the terminal.
In a specific implementation of step S11, the service type of the terminal is determined according to the parameter indicating the service type of the terminal included in the non-access stratum message.
The non-access stratum message may come from a calling party terminal or a called party terminal, where both the calling party terminal and the called party terminal may be in a connected state. When the non-access layer message comes from the calling party terminal, the VOLTE MO indication can be carried; the non-access stratum message may carry a VOLTE MT indication when it comes from the called party terminal.
Specifically, the terminal may carry the VOLTE MO/MT indication through an Extended Service Request (Extended Service Request), and may add an information element to carry the indication.
When the terminal is the called terminal, the MME may add a signaling to notify the terminal of its service type.
Referring to fig. 4, when the terminal is a called terminal, before step S11, the call method in the embodiment of the present invention may further include:
step S41, receiving a message from MME, wherein the message from MME comprises the identification mark of the terminal;
in the process of establishing the call, the MME knows the identification mark of the called party terminal and the service type of the called party terminal, so that the MME can inform the base station of the service type and the identification mark of the called party terminal, so that the base station can determine the specific terminal indicated by the identification mark and determine the service type of the terminal.
In summary, the base station may determine the service type of the terminal in various ways. After the service type of the terminal is determined, the switching information can be configured to determine that the terminal is a calling party terminal or a called party terminal, and whether to trigger a switching process is judged according to the switching information.
The handover procedure may be any one of a redirection handover procedure, an SRVCC handover procedure, and a PS handover procedure.
And when the switching process is a redirection switching process or a PS switching process, initiating a call establishment process. When the handover procedure is a redirection handover procedure or a PS handover procedure, the call cannot be maintained, and therefore a call establishment procedure needs to be initiated. Since the calling party terminal has already initiated the call setup procedure, the call setup procedure is initiated again here, and the specific parameters carried may be different from the previous call setup procedure.
The determination of whether to trigger the handover procedure may be performed before the setup of the dedicated bearer for VOLTE. The decision can be made, for example, before a pre-alerting period when the terminal is the calling party. Or may be determined prior to the alerting period when the terminal is the called party.
Specifically, when the service type is the calling VOLTE service, before the previous ringing period, step 3 to step 12 of the protocol TS 36.508 Table 4.5a.6.3-1 may be executed to determine whether to trigger the handover procedure.
When the service type is called party VOLTE service, before the ringing period, step 3 to step 9 in the protocol TS 36.508 Table 4.5a.7.3-1 may be executed to determine whether to trigger the handover procedure.
Because whether the switching process is triggered can be judged before the VOLTE special bearer is established, the VOLTE call before the previous ringing period of the bSRVCC of the calling party terminal can be smoothly switched to the 2G/3G CS domain, and the VOLTE call before the ringing period of the aSRVCC of the called party terminal can be smoothly switched to the 2G/3G CS domain by the call method in the embodiment of the invention.
However, in the prior art, the VOLTE call before the ringing period can only be smoothly switched to the 2G/3G CS domain, or the VOLTE call in the ringing period can only be smoothly switched to the 2G/3G CS domain. Therefore, the conversation method in the embodiment of the application can be compatible with the existing protocol and makes up for the defects of the prior art.
Referring to fig. 5, in the embodiment of the present invention, before step S31, the method may further include:
in step S51, a measurement report is received.
Step S13 may be implemented as follows: and judging whether to trigger the switching process or not by combining the switching information and the measurement report.
After determining to trigger the handover procedure, the call method in the embodiment of the present invention may further include:
step S52, a handover procedure is performed to establish the CS domain voice service.
The CS domain voice service may be a 2G network or 3G network side voice service, and the specific network selection may be determined in step S13.
In summary, in the embodiment of the present invention, the service type of the terminal is determined before the dedicated bearer for VOLTE is established, and when the service type of the terminal is the VOLTE service, the handover information is configured and it is determined whether to trigger the handover procedure, so that it is possible to determine whether to trigger the handover procedure before the dedicated bearer for VOLTE is established, and thus, the call quality of the voice service can be improved.
An embodiment of the present invention further provides another communication method, which is applicable to a terminal, and a flowchart of the method is shown in fig. 6, where the method specifically includes:
step S61, before the VOLTE special bearing is established, the service type is reported to the access network, so that the access network determines the service type of the terminal;
step S62, receiving an indication of an access network to perform a handover procedure, where the handover procedure is used to ensure continuity of a voice service.
In a specific implementation, reporting the service type to the access network includes any one of the following:
reporting the service type to an access network through an RRC connection request;
and reporting the service type to the access network through the non-access layer message.
In a specific implementation, before reporting the service type to the access network, the method may further include: receiving a message from an MME to determine the traffic type.
When the handover procedure is a redirection handover procedure or a PS handover procedure, the call method may further include: a call setup procedure is initiated. The originating call setup procedure may be initiated by the network side or by the terminal.
The communication method suitable for the terminal in the embodiment of the invention can be used in cooperation with the communication method suitable for the base station, and the specific implementation and beneficial effects of the communication method suitable for the terminal refer to the communication party suitable for the base station, which is not described herein again.
Referring to fig. 7, an embodiment of the present invention further provides a communication device, which may be integrated with or external to a base station, and specifically includes the following units:
a service type determining unit 71, adapted to determine a service type of the terminal before the VOLTE dedicated bearer is established;
a switching information configuration unit 72, adapted to configure switching information when the service type of the terminal is VOLTE service, where the switching information is used for a switching process, and the switching process is used to ensure continuity of voice service;
a determining unit 73 adapted to determine whether to trigger the handover procedure based on the handover information.
In a specific implementation, the communication device may further include: an RRC establishment request receiving unit 74, adapted to receive an RRC establishment request before determining a service type of the terminal, where the RRC establishment request carries a parameter used for indicating the service type;
wherein the service type determining unit 71 is adapted to determine the service type of the terminal through the parameter representing the service type received by the RRC establishment request receiving unit 74.
In a specific implementation, the terminal is a calling party terminal or a called party terminal, and the RRC establishment request is from the calling party terminal or the called party terminal.
In a specific implementation, the communication device may further include: a non-access stratum message receiving unit 75, adapted to receive a non-access stratum message before determining the terminal service type, wherein the non-access stratum message includes a parameter for indicating the terminal service type;
wherein the service type determining unit 71 is adapted to determine the service type of the terminal according to the parameter indicating the service type of the terminal received by the non-access stratum message receiving unit 75.
In a specific implementation, the terminal is a calling party terminal or a called party terminal, and the non-access stratum message is from the calling party terminal or the called party terminal.
In specific implementation, the type of the VOLTE service includes a calling VOLTE service or a called VOLTE service, and the switching information is configured according to the type of the VOLTE service.
In a specific implementation, the terminal is a called terminal, and the communication device further includes an MME message receiving unit 76 adapted to receive a message from an MME before determining a service type of the terminal, where the message from the MME includes an identification of the terminal;
wherein, the service type determining unit 71 is adapted to determine that the service type of the terminal is called VOLTE service according to the message from the MME.
In a specific implementation, the handover procedure includes any one of: a redirection handover procedure, an SRVCC handover procedure, and a PS handover procedure.
In a specific implementation, the communication device further includes: and the call establishment initiating unit is suitable for initiating a call establishment process when the switching process is a redirection switching process or a PS switching process.
In a specific implementation, the communication device may further include: a measurement report receiving unit 77 adapted to receive a measurement report before determining whether to trigger the handover procedure based on the handover information;
the determining unit 73 is adapted to determine whether to trigger the handover procedure in combination with the handover information and the measurement report.
The explanation, implementation principle and beneficial effects of the terms related to the communication device in the embodiment of the present invention may refer to the communication method applicable to the base station in the embodiment of the present invention, and are not described herein again.
An embodiment of the present invention further provides a communication device, a schematic structural diagram of which is shown in fig. 8, and the communication device may be embedded in a terminal, and specifically may include:
a service type reporting unit 81, adapted to report a service type to the access network before the VOLTE dedicated bearer is established, so that the access network determines the service type of the terminal;
The switching unit 82 is adapted to receive an indication of an access network to perform a switching process, where the switching process is used to ensure continuity of the voice service.
In a specific implementation, the service type reporting unit 81 is adapted to report the service type to the access network by any one of the following manners:
reporting the service type to an access network through an RRC connection request;
and reporting the service type to the access network through the non-access layer message.
In a specific implementation, the calling device may further include a message receiving unit 83 adapted to receive a message from an MME to determine the service type.
In a specific implementation, the call device may further include a call setup initiation unit, adapted to initiate a call setup procedure when the handover procedure is a redirection handover procedure or a PS handover procedure.
The explanation, implementation principle and beneficial effects of the terms related to the communication device in the embodiment of the present invention may refer to the communication method applicable to the terminal in the embodiment of the present invention, and are not described herein again.
The embodiment of the invention also provides a computer readable storage medium, which stores computer instructions, and the computer instructions execute the steps of the communication method suitable for the base station when running.
The embodiment of the invention also provides a computer readable storage medium, which stores computer instructions, and the computer instructions execute the steps of the communication method suitable for the terminal when running.
The computer readable storage medium may be an optical disc, a mechanical hard disk, a solid state hard disk, etc.
The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the call method applicable to the base station when executing the computer instructions.
The embodiment of the invention also provides a terminal, which comprises a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor, and the processor executes the steps of the communication method suitable for the terminal when running the computer instructions.
The terminal can be various appropriate terminals such as a smart phone and a tablet computer.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (28)

1. A method for calling, comprising:
before the VOLTE special bearer is established, determining the service type of a terminal;
if the service type of the terminal is VOLTE service, configuring switching information, wherein the switching information is used for switching a flow, and the switching flow is used for ensuring the continuity of voice service;
judging whether to trigger the switching process based on the switching information;
before determining the service type of the terminal, the method further comprises the following steps: receiving an RRC establishment request from a terminal in an idle state, wherein the RRC establishment request carries parameters for representing the service type, and the parameters for representing the service type represent the service type of the terminal by multiplexing the existing parameters or adding an enumeration value;
determining the service type of the terminal through a parameter representing the service type;
the terminal is a calling party terminal or a called party terminal;
when the terminal is a calling party terminal, judging whether to trigger the switching process before a preceding ringing period;
and when the terminal is a called party terminal, judging whether to trigger the switching process before a ringing period.
2. A method for calling according to claim 1, wherein the RRC establishment request is from the calling party terminal or the called party terminal.
3. The method of claim 1, further comprising, prior to determining the terminal traffic type: receiving a non-access stratum message, wherein the non-access stratum message comprises a parameter used for expressing the service type of a terminal;
and determining the service type of the terminal according to the parameter for representing the service type of the terminal.
4. The communication method according to claim 3, wherein the terminal is a calling party terminal or a called party terminal, and the non-access stratum message is from the calling party terminal or the called party terminal.
5. The communication method according to claim 1, wherein the type of the VOLTE service includes a calling VOLTE service or a called VOLTE service, and the handover information is configured according to the type of the VOLTE service.
6. The communication method according to claim 1, wherein the terminal is a called terminal, and before determining the service type of the terminal, the method further comprises: receiving a message from an MME, wherein the message from the MME comprises an identification mark of the terminal;
and determining the service type of the terminal as called VOLTE service according to the message from the MME.
7. The communication method according to claim 1, wherein the handover procedure comprises any one of: a redirection handover procedure, an SRVCC handover procedure, and a PS handover procedure.
8. The communication method according to claim 7, wherein when it is determined that the redirection handover procedure or the PS handover procedure is triggered, further comprising: a call setup procedure is initiated.
9. The communication method according to claim 1, further comprising, before determining whether to trigger the handover procedure based on the handover information: receiving a measurement report;
the determining whether to trigger the handover procedure based on the handover information includes: and judging whether to trigger the switching process or not by combining the switching information and the measurement report.
10. A method for calling, comprising:
before the VOLTE special bearer is established, reporting the service type to an access network so that the access network determines the service type of a terminal;
receiving an indication of an access network to perform a switching process, wherein the switching process is used for ensuring the continuity of a voice service;
reporting the service type to the access network comprises any one of the following steps:
reporting a service type to an access network by a terminal in an idle state through an RRC connection request, wherein the RRC connection request carries a parameter for representing the service type, and the parameter for representing the service type represents the service type of the terminal by multiplexing an existing parameter or adding an enumeration value;
Reporting the service type to an access network through a non-access layer message;
when the terminal is a calling party terminal, judging whether to trigger the switching process before a previous ringing period; and when the terminal is the called party terminal, judging whether to trigger the switching process before the ringing period.
11. The telephony method of claim 10, wherein reporting the traffic type to the access network further comprises: receiving a message from an MME to determine the traffic type.
12. The method of claim 10, further comprising: and when the switching process is a redirection switching process or a PS switching process, initiating a call establishment process.
13. A communication device, comprising:
the service type determining unit is suitable for determining the service type of the terminal before the VOLTE special bearer is established;
the switching information configuration unit is suitable for configuring switching information when the service type of the terminal is VOLTE service, wherein the switching information is used for switching a flow, and the switching flow is used for ensuring the continuity of voice service;
a judging unit adapted to judge whether to trigger the handover procedure based on the handover information;
The RRC establishment request receiving unit is suitable for receiving an RRC establishment request from a terminal in an idle state before determining the service type of the terminal, wherein the RRC establishment request carries a parameter for representing the service type, and the parameter for representing the service type represents the service type of the terminal by multiplexing the existing parameter or adding an enumeration value;
wherein the service type determining unit is adapted to determine the service type of the terminal by a parameter representing the service type;
the terminal is a calling party terminal or a called party terminal;
when the terminal is a calling party terminal, judging whether to trigger the switching process before a preceding ringing period;
and when the terminal is a called party terminal, judging whether to trigger the switching process before a ringing period.
14. A telephony unit according to claim 13, in which the RRC setup request is from the calling party terminal or the called party terminal.
15. A call device as claimed in claim 13, further comprising: a non-access stratum message receiving unit, which is suitable for receiving a non-access stratum message before determining the terminal service type, wherein the non-access stratum message comprises a parameter used for representing the terminal service type;
The service type determining unit determines the service type of the terminal according to the parameter for representing the service type of the terminal.
16. The telephony apparatus of claim 15, wherein the terminal is a calling party terminal or a called party terminal, and wherein the non-access stratum message is from the calling party terminal or the called party terminal.
17. The communication device according to claim 13, wherein the type of VOLTE service includes a calling VOLTE service or a called VOLTE service, and the handover information is configured according to the type of VOLTE service.
18. A communicator according to claim 13, wherein the terminal is a called party terminal, the communicator further comprises an MME message receiving unit adapted to receive a message from an MME before determining a service type of the terminal, the message from the MME including an identification of the terminal;
and determining the service type of the terminal as called VOLTE service according to the message from the MME.
19. The communication device according to claim 13, wherein the handover procedure comprises any one of: a redirection handover procedure, an SRVCC handover procedure, and a PS handover procedure.
20. A call device as claimed in claim 19, further comprising: and the call establishment initiating unit is suitable for initiating a call establishment process when the switching process is a redirection switching process or a PS switching process.
21. A call device as claimed in claim 13, further comprising: a measurement report receiving unit adapted to receive a measurement report before determining whether to trigger the handover procedure based on the handover information;
the judging unit is adapted to judge whether to trigger the handover procedure in combination with the handover information and the measurement report.
22. A communication device, comprising:
the service type reporting unit is suitable for reporting the service type to the access network before the VOLTE special bearer is established so that the access network determines the service type of the terminal;
the switching unit is suitable for receiving an indication of an access network so as to perform a switching process, wherein the switching process is used for ensuring the continuity of the VOLTE service;
the service type reporting unit is suitable for reporting the service type to the access network by any one of the following modes: reporting a service type to an access network by a terminal in an idle state through an RRC connection request, wherein the RRC connection request carries a parameter for representing the service type, and the parameter for representing the service type represents the service type of the terminal by multiplexing an existing parameter or adding an enumeration value;
Reporting the service type to an access network through a non-access layer message;
when the terminal is a calling party terminal, judging whether to trigger the switching process before a previous ringing period; and when the terminal is the called party terminal, judging whether to trigger the switching process before the ringing period.
23. A call device as claimed in claim 22, further comprising:
and the message receiving unit is suitable for receiving a message from the MME to determine the service type.
24. A call device as claimed in claim 22, further comprising: and the call establishment initiating unit is suitable for initiating a call establishment process when the switching process is a redirection switching process or a PS switching process.
25. A computer readable storage medium having computer instructions stored thereon, wherein the computer instructions are operable to perform the steps of the method for calling of any of claims 1 to 9.
26. A computer readable storage medium having computer instructions stored thereon for performing the steps of the method of telephony as claimed in any one of claims 10 to 12 when the computer instructions are executed.
27. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor executes the computer instructions to perform the steps of the method of telephony as claimed in any one of claims 1 to 9.
28. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor executes the computer instructions to perform the steps of the telephony method of any one of claims 10 to 12.
CN201710407550.9A 2017-06-02 2017-06-02 Call method and device, computer readable storage medium, base station and terminal Active CN109246632B (en)

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CN104254111B (en) * 2010-08-30 2018-08-14 华为技术有限公司 Processing method, equipment and the system of reverse single wireless voice calling continuity
US20160353340A1 (en) * 2015-05-29 2016-12-01 Qualcomm Incorporated Inter-rat (radio access technology) and intra-rat measurement reporting
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