WO2018076293A1 - 多媒体通信的参数调整方法、装置及移动终端 - Google Patents

多媒体通信的参数调整方法、装置及移动终端 Download PDF

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Publication number
WO2018076293A1
WO2018076293A1 PCT/CN2016/103826 CN2016103826W WO2018076293A1 WO 2018076293 A1 WO2018076293 A1 WO 2018076293A1 CN 2016103826 W CN2016103826 W CN 2016103826W WO 2018076293 A1 WO2018076293 A1 WO 2018076293A1
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Prior art keywords
multimedia
mobile terminal
parameter information
multimedia parameter
negotiation request
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PCT/CN2016/103826
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English (en)
French (fr)
Inventor
杨河山
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海能达通信股份有限公司
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Application filed by 海能达通信股份有限公司 filed Critical 海能达通信股份有限公司
Priority to PCT/CN2016/103826 priority Critical patent/WO2018076293A1/zh
Publication of WO2018076293A1 publication Critical patent/WO2018076293A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working

Definitions

  • the present application relates to the field of storage technologies, and in particular, to a parameter adjustment method and apparatus for multimedia communication, and a mobile terminal.
  • Video communication refers to a communication service that delivers video information.
  • both parties need to negotiate the multimedia parameters used in the video communication process.
  • the two communicating parties complete the negotiation of the multimedia parameters during the video call, and in the subsequent call, the multimedia parameters are not changed.
  • LTE Long Term Evolution
  • the application provides a parameter adjustment method, device and mobile terminal for multimedia communication, which can ensure the quality of multimedia communication.
  • the first aspect of the present application provides a method for adjusting a parameter of a multimedia communication, including: in a process of performing multimedia communication with a second mobile terminal, the first mobile terminal detects whether the multimedia parameter used in the current multimedia communication needs to be adjusted; And detecting, when the multimedia parameter needs to be adjusted, generating a negotiation request of the multimedia parameter, and sending the negotiation request to the second mobile terminal; and receiving the confirmation that the second mobile terminal sends the response to the negotiation request At the time of the message, the multimedia parameters used in the multimedia communication are adjusted according to the confirmation message.
  • the determining whether the multimedia parameter used in the current multimedia communication needs to be adjusted includes: counting the loss rate of the multimedia key frame in the set time every set time; determining whether the statistics are obtained several times in succession The multimedia key frame loss rate exceeds the threshold, and if so, it is determined that the multimedia parameters used in the current multimedia communication need to be adjusted.
  • the negotiation request includes at least one set of multimedia parameter information that is recommended to be adjusted, and the request for generating the multimedia parameter includes: determining at least one set of multimedia parameter information suitable for a current network state; generating at least the determined A set of negotiation requests for multimedia parameter information.
  • the confirmation message includes a result of selecting the at least one set of multimedia parameter information, and adjusting the multimedia parameter used in the multimedia communication according to the confirmation message, including: according to the The selection result determines a set of the multimedia parameter information that is finally negotiated; and the multimedia parameter used in the multimedia communication is adjusted correspondingly by using the determined multimedia parameter information.
  • the current network status includes at least one of a current network rate, a bandwidth, and a received signal.
  • the negotiation request and the acknowledgement message are extended non-access layers (English: Non-access) Stratum, referred to as: NAS) signaling.
  • the multimedia parameter includes at least one of resolution, code rate, frame rate, bit rate, video quality level, capability table, image quality, and packaging mode, and the multimedia communication is video communication.
  • the second aspect of the present application provides a parameter adjustment method for multimedia communication, including: in a multimedia communication process with a first mobile terminal, a second mobile terminal receives a negotiation request of a multimedia parameter sent by the first mobile terminal; Determining, by the negotiation request, the negotiated multimedia parameter information; sending an acknowledgement message to the first mobile terminal to notify the first mobile terminal of the determined multimedia parameter information; and finally negotiating a group with the first mobile terminal
  • the multimedia parameter information is used to adjust the multimedia parameters used in the multimedia communication by using the finally negotiated multimedia parameter information.
  • the negotiation request includes at least one set of multimedia parameter information that is recommended to be adjusted.
  • the determining the negotiated multimedia parameter information according to the negotiation request includes: performing, by using the at least one set of multimedia parameter information in the negotiation request Selecting, obtaining the negotiated multimedia parameter information; the sending the acknowledgement message to the first mobile terminal, comprising: generating an acknowledgement message including the selection result, and sending the acknowledgement message to the first mobile terminal.
  • the selecting the at least one set of the multimedia parameter information in the negotiation request to obtain the negotiated multimedia parameter information includes: selecting the at least one set of multimedia parameter information in the negotiation request
  • the multimedia parameter information suitable for the current network state is used as the negotiated multimedia parameter information.
  • the current network status includes at least one of a current network rate, a bandwidth, and a received signal.
  • the negotiation request and the acknowledgement message are extended non-access stratum NAS signaling.
  • the multimedia parameter includes at least one of resolution, code rate, frame rate, bit rate, video quality level, capability table, image quality, and packaging mode, and the multimedia communication is video communication.
  • the third aspect of the present application provides a parameter adjustment apparatus for multimedia communication, where the parameter adjustment apparatus is used by a first mobile terminal, and includes: a detection module, configured to perform a multimedia communication process between the first mobile terminal and the second mobile terminal. Detecting whether the multimedia parameter used in the current multimedia communication needs to be adjusted; the negotiation module is configured to: when detecting that the multimedia parameter needs to be adjusted, generate a negotiation request of the multimedia parameter, and send the negotiation request to the a second mobile terminal; an adjusting module, configured to adjust, according to the confirmation message, the first mobile terminal in the multimedia communication when receiving an acknowledgement message sent by the second mobile terminal in response to the negotiation request The multimedia parameters used.
  • a detection module configured to perform a multimedia communication process between the first mobile terminal and the second mobile terminal. Detecting whether the multimedia parameter used in the current multimedia communication needs to be adjusted
  • the negotiation module is configured to: when detecting that the multimedia parameter needs to be adjusted, generate a negotiation request of the multimedia parameter, and send the negotiation request to the a second mobile terminal
  • the fourth aspect of the present application provides a parameter adjustment apparatus for multimedia communication, where the parameter adjustment apparatus is used for a second mobile terminal that can perform multimedia communication with a first mobile terminal, and includes: a receiving module, configured to be in the second mobile Receiving, by the terminal, the negotiation request of the multimedia parameter sent by the first mobile terminal, the negotiation module, configured to determine the negotiated multimedia parameter information according to the negotiation request, and the sending module, configured to The first mobile terminal sends an acknowledgment message to notify the first mobile terminal of the determined multimedia parameter information, and the adjustment module is configured to use, when finally negotiating a set of multimedia parameter information with the first mobile terminal, The final negotiated multimedia parameter information corresponds to adjusting multimedia parameters used in the multimedia communication.
  • a fifth aspect of the present application provides a mobile terminal, where the mobile terminal is a first mobile terminal, including a transmitter, a receiver, a memory, and a processor, where the memory is configured to store a computer configured to be executed by the processor
  • the processor executes the computer instruction, in the process of performing multimedia communication between the first mobile terminal and the second mobile terminal, detecting whether the multimedia parameter used in the current multimedia communication needs to be adjusted; And detecting, when the multimedia parameter needs to be adjusted, generating a negotiation request of the multimedia parameter, and instructing the transmitter to send the negotiation request to the second mobile terminal; and receiving, by the receiver, the second mobile terminal response
  • the confirmation message sent by the negotiation request is described, the multimedia parameter used in the multimedia communication is adjusted according to the confirmation message.
  • the negotiation request includes at least one set of multimedia parameter information that is recommended to be adjusted, and the processor executing the negotiation request for generating the multimedia parameter includes: determining at least one set of multimedia parameter information suitable for a current network state; generating the inclusion The determined negotiation request of at least one set of multimedia parameter information.
  • the confirmation message includes a selection result of the at least one set of multimedia parameter information
  • the processor performs the adjusting, according to the confirmation message, a multimedia parameter used in the multimedia communication, including: confirming according to the confirmation
  • the selection result in the message determines a set of the multimedia parameter information that is finally negotiated; and the multimedia parameter used in the multimedia communication is adjusted correspondingly by using the determined multimedia parameter information.
  • the negotiation request and the acknowledgement message are extended NAS signaling.
  • a sixth aspect of the present application provides a mobile terminal, where the mobile terminal is a second mobile terminal that can perform multimedia communication with the first mobile terminal, including a transmitter, a receiver, a memory, and a processor; the memory is used to store a computer instruction configured to be executed by the processor; the processor executing the computer instruction to: acquire, during the multimedia communication between the second mobile terminal and the first mobile terminal, the receiver a negotiation request of the multimedia parameter sent by the first mobile terminal; determining the negotiated multimedia parameter information according to the negotiation request; instructing the sender to send an acknowledgement message to the first mobile terminal, to notify the first mobile terminal Determining the multimedia parameter information; when finally negotiating a set of multimedia parameter information with the first mobile terminal, using the finally negotiated multimedia parameter information to adjust the multimedia parameter used in the multimedia communication.
  • the negotiation request includes at least one set of multimedia parameter information that is recommended to be adjusted; the processor performing the determining the negotiated multimedia parameter information according to the negotiation request, including: at least one of the negotiation requests The group of multimedia parameter information is selected to obtain the negotiated multimedia parameter information; the processor performing the indication that the sender sends an acknowledgement message to the first mobile terminal, including: generating a confirmation message including a selection result, and Instructing the sender to send the acknowledgement message to the first mobile terminal.
  • the processor performs the selection of the at least one set of the multimedia parameter information in the negotiation request, and obtains the negotiated multimedia parameter information, including: the at least one group in the negotiation request
  • the multimedia parameter information is used to select the multimedia parameter information suitable for the current network state as the negotiated multimedia parameter information.
  • the negotiation request and the acknowledgement message are extended NAS signaling.
  • the multimedia parameter information can be renegotiated, and the multimedia communication information is continued by using the negotiated multimedia parameter information, thereby implementing the communication process.
  • the adaptive configuration of the multimedia parameters avoids problems such as packet loss due to the current multimedia parameter mismatch, thereby ensuring the quality of the multimedia communication.
  • FIG. 1 is a schematic structural diagram of an embodiment of a communication system of the present application.
  • FIG. 2 is a flowchart of an embodiment of a parameter adjustment method for multimedia communication performed by the communication system of the present application
  • FIG. 3 is a partial flowchart of another embodiment of a parameter adjustment method for multimedia communication performed by the communication system of the present application
  • FIG. 4 is a flowchart of an embodiment of a parameter adjustment method for multimedia communication according to the present application.
  • FIG. 5 is a flowchart of another embodiment of a parameter adjustment method for multimedia communication according to the present application.
  • FIG. 6 is a schematic structural diagram of an embodiment of a parameter adjustment apparatus for multimedia communication according to the present application.
  • FIG. 7 is a schematic structural diagram of another embodiment of a parameter adjustment apparatus for multimedia communication according to the present application.
  • Figure 8 is a schematic structural diagram of an embodiment of a mobile terminal of the present application.
  • FIG. 1 is a schematic structural diagram of an embodiment of a communication system according to the present application
  • FIG. 2 is a flowchart of a communication method of the communication system shown in FIG. 1 of the present application.
  • the communication system 10 is an LTE broadband trunking communication system, and includes a first mobile terminal 11, a second mobile terminal 12, a plurality of base stations 13, 14 and a cluster core network 15.
  • the mobile terminals 11, 12 are connected to the cluster core network 15 through the base stations 13, 14, and the cluster core network 15 is used for mobility management and call management.
  • the first mobile terminal 11 and the second mobile terminal 12 can perform multimedia communication, such as a video call, through the base station and the cluster core network.
  • the multimedia communication process of the communication system 10 is as follows:
  • Call setup procedure When the first mobile terminal 11 sends a call request through the base station 13, the cluster core network 15 receives the call request, and forwards the call request to the called second mobile terminal 12 through the base station 14 according to the call request. When the second mobile terminal 12 transmits the response message of the call request, the call service is established.
  • the first mobile terminal 11 and the second mobile terminal 12 may first negotiate the multimedia parameters.
  • the first mobile terminal 11 after the first mobile terminal 11 and the base station 13 perform context establishment, the first mobile terminal 11 as the primary calling terminal initiates a call request (CALL).
  • REQUEST wherein the call request includes a negotiated session description protocol (English: Session Description)
  • SDP multimedia parameter information of the protocol
  • SDP may specifically include multiple sets of multimedia parameter information, and each set of multimedia parameter information may include: parameter information such as capability table, image quality, video quality level, resolution, bit rate, and packing mode.
  • a set of multimedia parameters includes a profile-level-id, and the profile-level-id is three bytes, specifically including a first byte AVCProfileIndication: used to represent image quality; and a second byte profile_compatibility: used to indicate corresponding a capability table, the capability table is used to indicate a capability level of the mobile terminal currently supporting multimedia, and the mobile terminal can be configured with multiple capability tables, specify a capability table by using the second byte, and pass the specified capability table and the first
  • the quality of the byte representation determines the maximum resolution, frame rate, and code rate that it can support.
  • the third byte, AVCLevlIndication is used to indicate the maximum resolution, frame rate, and code rate.
  • the first mobile terminal 11 provides at least one set of multimedia parameter information that can be supported and suggested by itself to the called terminal through the call request.
  • the second mobile terminal 12 After receiving the call request, the second mobile terminal 12, as the called end, selects a group among the multimedia parameter information in the call request according to its own condition, as the finally negotiated multimedia parameter information used in the communication.
  • the RRC request is sent to the first mobile terminal 11 to request the first mobile terminal 11 to send other multimedia parameter information, re-write, or directly
  • the at least one set of supported multimedia parameter information is sent to the first mobile terminal 11 to enable the first mobile terminal 11 to select the multimedia parameter information of the final protocol from the at least one set of multimedia parameter information, and feed back the selection result.
  • the second mobile terminal 12 After pressing the answer key, the second mobile terminal 12 initiates a call connection carrying the finally negotiated multimedia parameter information (CALL CONNECT) to the first mobile terminal 11 to implement the establishment of the call.
  • CALL CONNECT multimedia parameter information
  • first mobile terminal 12 is the called end, and the second mobile terminal is the called end.
  • first mobile terminal 12 can be the called end, and the second mobile terminal can be the calling end. .
  • the first mobile terminal 11 and the second mobile terminal 12 make a call through the base station and the core network.
  • the first mobile terminal 11 and the second mobile terminal 12 use the multimedia parameter information finally negotiated during the call process to perform the multimedia communication.
  • the first mobile terminal 11 detects that the multimedia parameter needs to be adjusted. For example, the first mobile terminal 11 detects the current signal reception status in a timely manner or in real time during the multimedia communication process. If it is found that the current signal reception condition does not meet the set condition, such as the packet loss rate is too high, it is determined that the current adjustment needs to be performed. Multimedia parameters in multimedia communication.
  • the first mobile terminal 11 determines suitable multi-group multimedia parameter information according to its current network status, and packages the determined multimedia parameters in the negotiation request, and sends the negotiation request to the cluster core network 15 through the base station 13.
  • the negotiation request is extended NAS signaling, and the negotiation request is added to the communication protocol in advance to enable the device to identify the request.
  • the cluster core network 15 forwards the negotiation request to the second mobile terminal 12 through the base station 14.
  • the second mobile terminal 12 obtains the negotiated plurality of sets of multimedia parameter information from the negotiation request, and selects an appropriate set of multimedia parameter information from the current network state, and packages the selection result in the confirmation message, and sends the confirmation message through
  • the base station 14 transmits to the cluster core network 15.
  • the confirmation message is another extended NAS signaling, and is added to the communication protocol in advance, so that the device can identify the message.
  • the cluster core network 15 forwards the acknowledgment message to the first mobile terminal 11 through the base station 13.
  • the user A of the first mobile terminal 11 and the user B of the second mobile terminal 12 perform a video call. Since the user A and the user B are currently in the urban area, the current network speed reaches the set network speed value, so during the call.
  • the video quality level used for the video call is HD
  • the resolution is 1280x83
  • the code rate is 3500Kbps.
  • the first mobile terminal 11 and the second mobile terminal 12 both count the video key frame loss rate within 5s every 5s.
  • the first mobile terminal 11 detects multiple consecutive times (such as 10).
  • the first mobile terminal 11 transmits, by the network formed by the base station and the core network, the first extended NAS signaling carrying the two sets of multimedia parameter information, that is, the negotiation request, to the second mobile terminal 12.
  • the second mobile terminal 12 After receiving the request, the second mobile terminal 12 selects a second set of multimedia parameter information from the request, and sends a second extension carrying the second set of multimedia parameter information to the first mobile terminal 11 because the current network status is detected to be good. NAS signaling, that is, a confirmation message. Then, the second mobile terminal 12 uses the second set of multimedia parameter information to perform the video call. After receiving the message, the first mobile terminal 11 determines that the multimedia parameter of the current video call is the second group, and also uses the second group of multimedia parameter information to perform the video call.
  • the multimedia parameters used are: the video quality level is standard definition, the resolution is 83x480, and the code rate is 1000 kbps, until the communication ends detect that the multimedia parameters need to be adjusted again, then continue as The above method is adjusted.
  • both ends of the communication in this embodiment may request to initiate the above-mentioned multimedia parameter adjustment, that is, in the above example, the second mobile terminal 12 may perform the above steps similar to the first mobile terminal to detect the multimedia parameter. The adjustment is made and the multimedia parameters are negotiated with the first mobile terminal 11.
  • the calling terminals in the communication end have the right to have the detection and request to adjust the multimedia parameters.
  • the communication network where the mobile terminal of the present application is located is not limited to an LTE cluster private network, and in other embodiments, may be any wireless communication network.
  • first mobile terminal and the second mobile terminal in this embodiment may be as described in the following embodiments.
  • FIG. 4 is a flowchart of an embodiment of a parameter adjustment method for multimedia communication according to the present application. The method is performed by the mobile terminal shown in FIG. 1 above, and the embodiment is executed by the first mobile terminal. Specifically, the method includes:
  • the first mobile terminal detects, during the multimedia communication with the second mobile terminal, whether the multimedia parameter used in the current multimedia communication needs to be adjusted.
  • the first mobile terminal and the second mobile terminal detect whether the multimedia parameters currently used in the video call need to be adjusted periodically or in real time. Specifically, the first mobile terminal may determine whether to perform adjustment according to the current network state, and if the current network state meets the set adjustment condition, determine that the multimedia parameter currently used in the video call needs to be re-adjusted. In other embodiments, the first mobile terminal may also determine according to other aspects, such as whether the user switches other multimedia communication modes or the like.
  • the current network status includes at least one of a packet loss rate, a current network rate, a bandwidth, and a received signal.
  • the S401 specifically includes:
  • the first mobile terminal collects the multimedia key frame loss rate in the set time every set time; determines whether the multimedia key frame loss rate obtained by counting the number of times exceeds the threshold value, and if yes, determines the current location
  • the multimedia parameters used in multimedia communication need to be adjusted.
  • the negotiation request includes at least one set of multimedia parameter information that is suggested to be adjusted.
  • the negotiating of the generated multimedia parameter in the S402 may specifically include: determining at least one set of multimedia parameter information suitable for a current network state; and generating a negotiation request including the determined at least one set of multimedia parameter information.
  • the first mobile terminal prestores a correspondence between different network states and multimedia parameter information that should be adopted.
  • the multimedia parameter in the multimedia communication needs to be re-adjusted
  • at least one set of multimedia parameter information corresponding to the current network state is found from the pre-stored correspondence, and a negotiation request carrying the at least one set of multimedia parameter information is generated, and The request is sent to the second mobile terminal.
  • the foregoing correspondence may be configured by a user or learned by the first mobile terminal through historical multimedia communication records.
  • S403 When receiving the acknowledgement message sent by the second mobile terminal in response to the negotiation request, adjusting a multimedia parameter used in the multimedia communication according to the acknowledgement message.
  • the confirmation message includes a selection result of at least one set of multimedia parameter information carried by the negotiation request.
  • the S403 includes: determining, according to the selection result in the confirmation message, a final set of the multimedia parameter information that is negotiated; and adjusting, by using the determined multimedia parameter information, a multimedia parameter used in the multimedia communication.
  • the second mobile terminal selects a set of multimedia parameter information that matches the current network status and can be supported by the second mobile terminal, and generates an acknowledgement message carrying the selection result, and sends the acknowledgement request.
  • the selection result may be specifically a selected set of multimedia parameter information or an identifier thereof, or a character confirming selection or non-selection.
  • the selection result carried by the acknowledgement message received by the first mobile terminal is not selected, so that other multimedia parameter information is selected according to the current network state.
  • the first mobile terminal may repeat the step until the second mobile terminal confirms that a set of multimedia parameter information is selected therefrom.
  • the first mobile terminal After determining, by the first mobile terminal, a set of multimedia parameter information selected by the second mobile terminal, the first mobile terminal performs multimedia communication with the second mobile terminal by using the determined multimedia parameter information.
  • the first mobile terminal in the process of performing multimedia communication with the second mobile terminal, detects whether the multimedia parameter used by the mobile terminal needs to be adjusted, and re-negotiates the multimedia parameter information with the second mobile terminal when detecting that the adjustment is needed. And the multimedia communication is continued by using the negotiated multimedia parameter information, so that the adaptive adjustment of the multimedia parameters in the communication process is realized, and the problem of packet loss due to the current multimedia parameter mismatch is avoided, thereby ensuring the quality of the multimedia communication. Moreover, the phenomenon that the user can cause communication jam, mosaic, etc. due to the change of the wireless signal during the movement process can be greatly reduced, and the user perception is improved.
  • FIG. 5 is a flowchart of another embodiment of a parameter adjustment method for multimedia communication according to the present application. The method is performed by the mobile terminal shown in FIG. 1 above, and the embodiment is executed by the second mobile terminal. Specifically, the method includes:
  • S501 In a process of performing multimedia communication with the first mobile terminal, the second mobile terminal receives a negotiation request of the multimedia parameter sent by the first mobile terminal.
  • S502 Determine the negotiated multimedia parameter information according to the negotiation request.
  • the negotiation request may be as described in the foregoing embodiment, where the S502 includes: selecting the at least one set of multimedia parameter information in the negotiation request, and obtaining the finally negotiated multimedia parameter information, specifically: And the at least one set of multimedia parameter information in the negotiation request is used to select the multimedia parameter information that is suitable for the current network state, as the negotiated multimedia parameter information.
  • S503 Send an acknowledgement message to the first mobile terminal to notify the first mobile terminal of the determined multimedia parameter information.
  • the second mobile terminal parses the negotiation request to obtain at least one set of multimedia parameter information carried by the second mobile terminal, and selects a group from the at least one set of multimedia parameter information and its current network status.
  • the set of multimedia parameter information that is matched and supported by the second mobile terminal is the finally negotiated multimedia parameter information.
  • the parameter information with high multimedia quality is preferentially selected.
  • the second mobile terminal generates an acknowledgement message carrying the selection result and sends the acknowledgement message to the first mobile terminal, so that the first mobile terminal can re-adjust the multimedia parameter in the multimedia communication according to the selection result.
  • the selection result may be specifically a selected set of multimedia parameter information or an identifier thereof, or a character confirming selection or non-selection.
  • the acknowledgment message indicating the unselected character may be sent to enable the first mobile terminal to re-negotiate as described in the foregoing embodiment; or the second mobile
  • the terminal selects at least one set of multimedia parameter information that meets the foregoing selection condition according to the current network state, and generates an acknowledgement message carrying the at least one set of multimedia parameter information to the first mobile terminal, where the first mobile terminal performs the steps S501-S503 to A set of multimedia parameter information is selected and feedback is performed, and the method repeats until the terminal confirms that a set of multimedia parameter information is selected from the message sent by the peer end, that is, the two ends of the communication finally negotiate the multimedia parameter.
  • the first mobile terminal and the second mobile terminal adjust the multimedia parameters used in the multimedia communication according to the finally negotiated multimedia parameter information, and continue using the adjusted multimedia parameters.
  • the multimedia communication After the multimedia parameter information is finally negotiated, the first mobile terminal and the second mobile terminal adjust the multimedia parameters used in the multimedia communication according to the finally negotiated multimedia parameter information, and continue using the adjusted multimedia parameters.
  • the multimedia communication After the multimedia parameter information is finally negotiated, the first mobile terminal and the second mobile terminal adjust the multimedia parameters used in the multimedia communication according to the finally negotiated multimedia parameter information, and continue using the adjusted multimedia parameters.
  • the foregoing first mobile terminal and the second mobile terminal do not necessarily select the multimedia parameter information according to the current network state.
  • the parameter requirements in the multimedia communication mode that the user switches in the mobile terminal may also be used. The selection is made, so here is no limitation on how to select multimedia parameter information in the present application.
  • the negotiation request and the confirmation message may be extended NAS signaling, that is, two new NAS signalings that are redefined differently from the existing NAS signaling.
  • the multimedia parameter includes at least one of a resolution, a code rate, a frame rate, a bit rate, a video quality level, a capability table, an image quality, and a packaging manner, and the multimedia communication is video communication.
  • the current network state includes at least one of a current network rate, a bandwidth, and a received signal.
  • FIG. 6 is a schematic structural diagram of an embodiment of a parameter adjustment apparatus for multimedia communication according to the present application.
  • the parameter adjustment device 60 of the multimedia communication is used by the first mobile terminal, and specifically includes a detection module 61, a negotiation module 62, and an adjustment module 63.
  • the detecting module 61 is configured to detect, during the multimedia communication between the first mobile terminal and the second mobile terminal, whether the multimedia parameter used in the current multimedia communication needs to be adjusted;
  • the negotiation module 62 is configured to: when the multimedia parameter is detected to be adjusted, generate a negotiation request of the multimedia parameter, and send the negotiation request to the second mobile terminal;
  • the adjusting module 63 is configured to adjust, according to the confirmation message, the multimedia parameter used by the first mobile terminal in the multimedia communication, when receiving the acknowledgement message sent by the second mobile terminal in response to the negotiation request.
  • the detecting module 61 is specifically configured to: during a multimedia communication process between the first mobile terminal and the second mobile terminal, calculate a multimedia key frame loss rate in the set time every set time; and determine whether the continuous The multimedia key frame loss rate obtained by the statistics exceeds the threshold value. If yes, it is determined that the multimedia parameters used in the current multimedia communication need to be adjusted.
  • the negotiation request includes at least one set of multimedia parameter information that is recommended to be adjusted
  • the negotiating module 62 performing the negotiation request step of generating the multimedia parameter specifically includes determining at least one set of multimedia parameter information suitable for a current network state; generating A negotiation request containing the determined at least one set of multimedia parameter information.
  • the confirmation message includes a selection result of the at least one set of multimedia parameter information; and the adjusting module 63 is specifically configured to: when receiving the confirmation message sent by the second mobile terminal in response to the negotiation request, according to The selection result in the confirmation message determines a set of the multimedia parameter information that is finally negotiated; and the multimedia parameter used in the multimedia communication is adjusted correspondingly by using the determined multimedia parameter information.
  • FIG. 7 is a schematic structural diagram of another embodiment of a parameter adjustment apparatus for multimedia communication according to the present application.
  • the parameter adjustment device 70 of the multimedia communication is used for the second mobile terminal that can perform multimedia communication with the first mobile terminal, and specifically includes: a receiving module 71, a negotiation module 72, a sending module 73, and an adjusting module 74.
  • the receiving module 71 is configured to receive a negotiation request of the multimedia parameter sent by the first mobile terminal during the multimedia communication process between the second mobile terminal and the first mobile terminal;
  • the negotiation module 72 is configured to determine the negotiated multimedia parameter information according to the negotiation request;
  • the sending module 73 is configured to send an acknowledgement message to the first mobile terminal to notify the first mobile terminal of the determined multimedia parameter information
  • the adjusting module 74 is configured to adjust the multimedia parameters used in the multimedia communication by using the finally negotiated multimedia parameter information when finally negotiating a set of multimedia parameter information with the first mobile terminal.
  • the negotiation request includes at least one set of multimedia parameter information that is recommended to be adjusted; the negotiation module 72 is specifically configured to select the at least one set of multimedia parameter information in the negotiation request, to obtain the negotiated multimedia Parameter information; the sending module 73 is specifically configured to generate an acknowledgement message including the selection result, and send the acknowledgement message to the first mobile terminal.
  • the negotiating module 72 is configured to select, according to the at least one set of multimedia parameter information in the negotiation request, the multimedia parameter information that is suitable for a current network state, as the negotiated multimedia parameter information.
  • the modules of the foregoing apparatus may be correspondingly used to perform the steps in the foregoing method embodiments.
  • first and second mobile terminals in the embodiment shown in FIG. 6 and FIG. 7 can be two mobile terminals as shown in FIG. 1, that is, the parameter adjusting devices 60 and 70 can be used for both of FIG.
  • the first mobile terminal can also be used in the second mobile terminal shown in FIG. 1, and the parameter adjustment devices 60 and 70 can be used in the same mobile terminal.
  • FIG. 8 is a schematic structural diagram of an embodiment of a mobile terminal according to the present application.
  • the mobile terminal 80 of the present embodiment is the mobile terminal shown in FIG. 1, such as the first mobile terminal, and includes a transmitter/81, a receiver 82, a processor 83, a memory 84, and a bus 85.
  • the transmitter 81 is for transmitting a message to an external device such as a base station.
  • the receiver 82 is configured to receive a message sent by an external device such as a base station.
  • Memory 84 is used to store computer instructions that are configured to be executed by said processor 83 and data that needs to be saved or cached during operation of processor 83.
  • the processor 83 is configured to perform at least one of the following two aspects by invoking a computer instruction stored in the memory 84:
  • the mobile terminal 80 is a first mobile terminal
  • the multimedia parameter used in the multimedia communication is adjusted according to the acknowledgment message.
  • the negotiation request includes at least one set of multimedia parameter information that is recommended to be adjusted
  • the processor 83 performs the negotiation request for generating the multimedia parameter, including: determining at least one set of multimedia parameter information suitable for a current network state; generating A negotiation request containing the determined at least one set of multimedia parameter information.
  • the confirmation message includes a selection result of the at least one set of multimedia parameter information
  • the processor 83 performs the adjusting, according to the confirmation message, a multimedia parameter used in the multimedia communication, including: according to the The selection result in the confirmation message determines a set of the multimedia parameter information that is finally negotiated; and the multimedia parameter used in the multimedia communication is adjusted correspondingly by using the determined multimedia parameter information.
  • the processor 83 performs the detecting whether the multimedia parameter used in the current multimedia communication needs to be adjusted, including: counting the multimedia key frame loss rate in the set time every set time; determining whether the continuous The multimedia key frame loss rate obtained by the statistics exceeds the threshold value. If yes, it is determined that the multimedia parameters used in the current multimedia communication need to be adjusted.
  • the mobile terminal 80 is a second mobile terminal
  • the multimedia parameter used in the multimedia communication is adjusted correspondingly by using the finally negotiated multimedia parameter information.
  • the negotiation request includes at least one set of multimedia parameter information that is recommended to be adjusted; and the processor 83 performs the determining, according to the negotiation request, the negotiated multimedia parameter information, including: the at least the negotiation request Selecting a set of multimedia parameter information to obtain the negotiated multimedia parameter information; the processor 83 executing the indication sender 81 to send the confirmation message to the first mobile terminal, including: generating an acknowledgement message including the selection result, and indicating The sender 81 sends the confirmation message to the first mobile terminal.
  • the processor 83 performs the selecting, by the selecting, the at least one set of the multimedia parameter information in the negotiation request, to obtain the negotiated multimedia parameter information, including: at least one of the negotiation request
  • the group multimedia parameter information is used to select the multimedia parameter information suitable for the current network state as the negotiated multimedia parameter information.
  • the above processor 83 can also be called a CPU (Central Processing) Unit, central processing unit).
  • Memory 84 can include read only memory and random access memory and provides instructions and data to processor 83.
  • a portion of memory 84 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the above components of the mobile terminal are coupled together by a bus 84.
  • the bus 84 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus 84 in the figure.
  • Processor 83 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 83 or an instruction in a form of software.
  • the processor 83 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware. Component.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in memory 84, and processor 83 reads the information in memory 84 and, in conjunction with its hardware, performs the steps of the above method.
  • the multimedia parameter information can be renegotiated, and the multimedia communication information is continued by using the negotiated multimedia parameter information, thereby implementing the communication process.
  • the adaptive configuration of the multimedia parameters avoids problems such as packet loss due to the current multimedia parameter mismatch, thereby ensuring the quality of the multimedia communication.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device implementations described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM, Read-Only) Memory, random access memory (RAM), disk or optical disk, and other media that can store program code.

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Abstract

本申请公开了多媒体通信的参数调整方法、装置及移动终端。其中，该方法包括：第一移动终端在与第二移动终端进行多媒体通信过程中，检测当前所述多媒体通信中所采用的多媒体参数是否需调整；在检测到所述多媒体参数需调整时，生成多媒体参数的协商请求，并将所述协商请求发送至所述第二移动终端；在接收到所述第二移动终端响应所述协商请求而发送的确认消息时，根据所述确认消息调整在所述多媒体通信中所采用的多媒体参数。通过上述方式，能够保证多媒体通信的质量。

Description

多媒体通信的参数调整方法、装置及移动终端
【技术领域】
本申请涉及存储技术领域，特别是多媒体通信的参数调整方法、装置及移动终端。
【背景技术】
视频通信是指传递视频信息的通信服务。在视频通信时，通信双方需要先协商好该视频通信过程中采用的多媒体参数。在目前LTE集群调度系统中，通信双方在视频呼叫过程中完成多媒体参数的协商，在后续通话中，则不会再变更多媒体参数。
然而，在长期演进（英文：Long Term Evolution，简称：LTE)集群专网场景中，用户在进行呼叫业务时，一般是在移动的，其所处的空口环境在不停变化。如果用户在进行实时视频业务时，移动过程中由于空口质量的变化会导致视频卡顿或马赛克的现象出现，导致通信质量降低。
【发明内容】
本申请提供多媒体通信的参数调整方法、装置及移动终端，能够保证多媒体通信的质量。
本申请第一方面提供一种多媒体通信的参数调整方法，包括：第一移动终端在与第二移动终端进行多媒体通信过程中，检测当前所述多媒体通信中所采用的多媒体参数是否需调整；在检测到所述多媒体参数需调整时，生成多媒体参数的协商请求，并将所述协商请求发送至所述第二移动终端；在接收到所述第二移动终端响应所述协商请求而发送的确认消息时，根据所述确认消息调整在所述多媒体通信中所采用的多媒体参数。
其中，所述检测当前所述多媒体通信中所采用的多媒体参数是否需调整，包括：每隔设定时间统计在所述设定时间内多媒体关键帧丢失率；判断是否连续若干次统计得到的所述多媒体关键帧丢失率均超过门限值，若是，则确定当前所述多媒体通信中所采用的多媒体参数需要调整。
其中，所述协商请求包括建议调整至的至少一组多媒体参数信息，所述生成多媒体参数的协商请求，包括：确定适合于当前网络状态的至少一组多媒体参数信息；生成包含所述确定的至少一组多媒体参数信息的协商请求。
其中，所述确认消息包括对所述至少一组多媒体参数信息的选择结果，所述根据所述确认消息调整在所述多媒体通信所采用的多媒体参数，包括：根据所述确认消息中的所述选择结果确定最终协商的一组所述多媒体参数信息；采用所述确定的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
其中，所述当前网络状态包括当前网络速率、带宽、接收信号中的至少一种。
其中，所述协商请求和所述确认消息为扩展的非接入层（英文：Non-access Stratum，简称：NAS）信令。
其中，所述多媒体参数包括分辨率、码率、帧率、比特率、视频质量等级、能力表、画质、打包方式中的至少一种，所述多媒体通信为视频通信。
本申请第二方面提供一种多媒体通信的参数调整方法，包括：在与第一移动终端进行多媒体通信过程中，第二移动终端接收所述第一移动终端发送的多媒体参数的协商请求；根据所述协商请求确定协商的多媒体参数信息；向所述第一移动终端发送确认消息，以通知所述第一移动终端所述确定的所述多媒体参数信息；在与第一移动终端最终协商好一组多媒体参数信息时，采用所述最终协商好的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
其中，所述协商请求包括建议调整至的至少一组多媒体参数信息；所述根据所述协商请求确定协商的多媒体参数信息，包括：对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述协商的多媒体参数信息；所述向所述第一移动终端发送确认消息，包括：生成包含选择结果的确认消息，并将所述确认消息发送至所述第一移动终端。
其中，所述对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述协商的多媒体参数信息，包括：对所述协商请求中的所述至少一组多媒体参数信息进行选择适合于当前网络状态的所述多媒体参数信息，作为所述协商的多媒体参数信息。
其中，所述当前网络状态包括当前网络速率、带宽、接收信号中的至少一种。
其中，所述协商请求和所述确认消息为扩展的非接入层NAS信令。
其中，所述多媒体参数包括分辨率、码率、帧率、比特率、视频质量等级、能力表、画质、打包方式中的至少一种，所述多媒体通信为视频通信。
本申请第三方面提供一种多媒体通信的参数调整装置，所述参数调整装置用于第一移动终端，包括：检测模块，用于在所述第一移动终端与第二移动终端进行多媒体通信过程中，检测当前所述多媒体通信中所采用的多媒体参数是否需调整；协商模块，用于在检测到所述多媒体参数需调整时，生成多媒体参数的协商请求，并将所述协商请求发送至所述第二移动终端；调整模块，用于在接收到所述第二移动终端响应所述协商请求而发送的确认消息时，根据所述确认消息调整所述第一移动终端在所述多媒体通信中所采用的多媒体参数。
本申请第四方面提供一种多媒体通信的参数调整装置，所述参数调整装置用于可与第一移动终端进行多媒体通信的第二移动终端，包括：接收模块，用于在所述第二移动终端与第一移动终端进行多媒体通信过程中，接收所述第一移动终端发送的多媒体参数的协商请求；协商模块，用于根据所述协商请求确定协商的多媒体参数信息；发送模块，用于向所述第一移动终端发送确认消息，以通知所述第一移动终端所述确定的所述多媒体参数信息；调整模块，用于在与第一移动终端最终协商好一组多媒体参数信息时，采用所述最终协商好的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
本申请第五方面提供一种移动终端，所述移动终端为第一移动终端，包括发送器、接收器、存储器及处理器；所述存储器用于存储被配置为被所述处理器执行的计算机指令；所述处理器执行所述计算机指令，用于：在所述第一移动终端与第二移动终端进行多媒体通信过程中，检测当前所述多媒体通信中所采用的多媒体参数是否需调整；在检测到所述多媒体参数需调整时，生成多媒体参数的协商请求，并指示发送器将所述协商请求发送至所述第二移动终端；在所述接收器接收到所述第二移动终端响应所述协商请求而发送的确认消息时，根据所述确认消息调整在所述多媒体通信中所采用的多媒体参数。
其中，所述协商请求包括建议调整至的至少一组多媒体参数信息，所述处理器执行所述生成多媒体参数的协商请求，包括：确定适合于当前网络状态的至少一组多媒体参数信息；生成包含所述确定的至少一组多媒体参数信息的协商请求。
其中，所述确认消息包括对所述至少一组多媒体参数信息的选择结果，所述处理器执行所述根据所述确认消息调整在所述多媒体通信所采用的多媒体参数，包括：根据所述确认消息中的所述选择结果确定最终协商的一组所述多媒体参数信息；采用所述确定的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
其中，所述协商请求和所述确认消息为扩展的NAS信令。
本申请第六方面提供一种移动终端，所述移动终端为可与第一移动终端进行多媒体通信的第二移动终端，包括发送器、接收器、存储器及处理器；所述存储器用于存储被配置为被所述处理器执行的计算机指令；所述处理器执行所述计算机指令，用于：在所述第二移动终端与第一移动终端进行多媒体通信过程中，获取所述接收器接收的所述第一移动终端发送的多媒体参数的协商请求；根据所述协商请求确定协商的多媒体参数信息；指示所述发送器向所述第一移动终端发送确认消息，以通知所述第一移动终端所述确定的所述多媒体参数信息；在与第一移动终端最终协商好一组多媒体参数信息时，采用所述最终协商好的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
其中，所述协商请求包括建议调整至的至少一组多媒体参数信息；所述处理器执行所述根据所述协商请求确定协商的多媒体参数信息，包括：对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述协商的多媒体参数信息；所述处理器执行所述指示所述发送器向所述第一移动终端发送确认消息，包括：生成包含选择结果的确认消息，并指示所述发送器将所述确认消息发送至所述第一移动终端。
其中，所述处理器执行所述对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述协商的多媒体参数信息，包括：对所述协商请求中的所述至少一组多媒体参数信息进行选择适合于当前网络状态的所述多媒体参数信息，作为所述协商的多媒体参数信息。
其中，所述协商请求和所述确认消息为扩展的NAS信令。
上述方案中，第一移动终端与第二移动终端进行多媒体通信过程中，能够对多媒体参数信息进行重新协商，并采用协商好的多媒体参数信息继续进行此次多媒体通信，故实现了在通信过程的多媒体参数的自适应配置，避免由于当前多媒体参数不匹配导致丢包等问题，进而保证该多媒通信质量。
【附图说明】
图1是本申请通信系统一实施方式的结构示意图；
图2是本申请通信系统所执行的多媒体通信的参数调整方法一实施方式的流程图；
图3是本申请通信系统所执行的多媒体通信的参数调整方法另一实施方式的部分流程图；
图4是本申请多媒体通信的参数调整方法一实施方式的流程图；
图5是本申请多媒体通信的参数调整方法另一实施方式的流程图；
图6是本申请多媒体通信的参数调整装置一实施方式的结构示意图；
图7是本申请多媒体通信的参数调整装置另一实施方式的结构示意图；
图8是本申请移动终端一实施方式的结构示意图.
【具体实施方式】
以下描述中，为了说明而不是为了限定，提出了诸如特定系统结构、接口、技术之类的具体细节，以便透彻理解本申请。然而，本领域的技术人员应当清楚，在没有这些具体细节的其它实施方式中也可以实现本申请。在其它情况中，省略对众所周知的装置、电路以及方法的详细说明，以免不必要的细节妨碍本申请的描述。
为便于理解本申请，先对本申请通信系统进行说明。
请参阅图1和图2，图1是本申请通信系统一实施方式的结构示意图，图2是本申请图1所示的通信系统的通信方法的流程图。以LTE集群专网为例，通信系统10为LTE宽带集群通信系统，包括第一移动终端11、第二移动终端12、多个基站13、14、集群核心网15。其中，移动终端11、12通过基站13、14与集群核心网15连接，集群核心网15用于移动性管理和呼叫管理。第一移动终端11和第二移动终端12之间可通过基站和集群核心网进行多媒体通信，如视频通话等。
如图2所示，通信系统10的多媒体通信过程如下：
1、呼叫建立过程：当第一移动终端11通过基站13发送呼叫请求时，集群核心网15接收该呼叫请求，并根据该呼叫请求通过基站14向被呼叫的第二移动终端12转发该呼叫请求，当第二移动终端12发送该呼叫请求的应答消息时，建立呼叫业务。
其中，在该过程中，第一移动终端11与第二移动终端12可先进行多媒体参数的协商。
请结合参考图3，第一移动终端11与基站13进行上下文建立后，作为主呼叫端的第一移动终端11发起呼叫请求（CALL REQUEST），其中，该呼叫请求中包含协商的会话描述协议(英文：Session Description Protocol，简称：SDP）的多媒体参数信息，具体可包含多组多媒体参数信息，每组多媒体参数信息可包含：能力表、画质、视频质量等级、分辨率、比特率、打包方式等参数信息。例如，一组多媒体参数包括profile-level-id，该profile-level-id为三个字节，具体包括第一字节AVCProfileIndication：用于表示画质；第二字节profile_compatibility：用于表示对应的能力表，该能力表用于表示移动终端当前支持多媒体的能力等级，移动终端内可设置有多个能力表，通过该第二字节指定一能力表，并通过该指定的能力表及第一字节表示的画质去确定其可支持的最大的分辨率、帧率、码率；第三字节AVCLevlIndication：用于表示最大的分辨率、帧率、码率。第一移动终端11将自身可支持且建议的至少一组多媒体参数信息通过呼叫请求一并提供给被呼叫端。
作为被呼叫端的第二移动终端12收到呼叫请求后，根据自身状况，在呼叫请求中的多媒体参数信息中选择一组，作为最终协商好的在此次通信中采用的多媒体参数信息。当然，若发现自身无法支持呼叫请求中的多媒体参数信息，则向第一移动终端11发送重新协商的请求，以请求第一移动终端11发送其他多媒体参数信息，进行重新写上，或者直接将自身支持的至少一组多媒体参数信息发送至第一移动终端11，以使第一移动终端11从该至少一组多媒体参数信息中选择最终协议的多媒体参数信息，并反馈其选择结果。
第二移动终端12在按下接听键后，发起携带有最终协商好的多媒体参数信息的呼叫连接（CALL CONNECT）至第一移动终端11，以实现此次呼叫的建立。
可以理解的是，不限定第一移动终端12为呼叫端，第二移动终端为被呼叫端，即其他实施例中，第一移动终端12可为被呼叫端，第二移动终端可为呼叫端。
2、通话：第一移动终端11和第二移动终端12通过基站和核心网进行通话。
第一移动终端11和第二移动终端12在此次多媒体通信过程中，采用在呼叫过程中最终协商好的多媒体参数信息进行此次的多媒体通信。
3、第一移动终端11检测到多媒体参数需调整。其中，例如，第一移动终端11在进行该多媒体通信过程中定时或者实时检测当前信号接收情况，若发现当前信号接收情况不符合设定条件，如丢包率过高等，则确定当前需要调整该多媒体通信中的多媒体参数。
4、多媒体参数的协商请求。例如，第一移动终端11根据自身当前网络状态，确定适合的多组多媒体参数信息，并将确定的多媒体参数打包在协商请求中，并将该协商请求通过基站13发送至集群核心网15。本例中，该协商请求为扩展的NAS信令，并将该协商请求预先加入通信协议中，以使上述设备能够识别该请求。
5、集群核心网15将该协商请求通过基站14转发至第二移动终端12。
6、第二移动终端12从协商请求中获得协商的多组多媒体参数信息，并根据当前网络状态从中选择合适的一组多媒体参数信息，并将选择结果打包在确认消息中，将确认消息发送通过基站14发送至集群核心网15。其中，该确认消息为另一扩展的NAS信令，且预先加入至通信协议中，以使上述设备能够识别该消息。
7、集群核心网15将该确认消息通过基站13转发至第一移动终端11。
8、通话：第一移动终端11和第二移动终端12均按照第二移动终端12最终选择的多媒体参数信息调整此次多媒体通信中的多媒体参数，并利用调整后的多媒体参数继续此次的多媒体通信。
例如，第一移动终端11的用户A和第二移动终端12的用户B进行视频通话，由于用户A和用户B当前在市区中，当前网速达到设定网速值，故在呼叫过程中协商好该视频通话所采用的视频质量等级为高清，分辨率为1280x83，码率为3500Kbps。在通话过程中，第一移动终端11和第二移动终端12均每隔5s统计该5s内视频关键帧丢失率，当用户A移动至郊区，第一移动终端11检测到连续多次(如10次)统计的丢失率均超过设定门限(如30%)），则确定当前视频通话采用的多媒体参数需要调整，并通过查询数据库中设定的网络状态与适用的多媒体参数信息之间的对应关系，得到与当前网络状态匹配的两组多媒体参数信息，如第一组为：视频质量等级为标清，分辨率为640x480，码率为500kbps；第二组为：视频质量等级为标清，分辨率为83x480，码率为1000kbps。第一移动终端11通过基站、核心网构成的网络向第二移动终端12发送携带该两组多媒体参数信息的第一扩展NAS信令，即协商请求。第二移动终端12接收到该请求后，由于检测到当前网络状态良好，故从请求中选择第二组多媒体参数信息，并向第一移动终端11发送携带第二组多媒体参数信息的第二扩展NAS信令，即确认消息。然后，第二移动终端12则采用该第二组多媒体参数信息进行此次视频通话。第一移动终端11接收该消息后，确定当前视频通话的多媒体参数为第二组，并同样采用第二组多媒体参数信息进行此次视频通话。即，在接下来的视频通话中，所采用的多媒体参数为：视频质量等级为标清，分辨率为83x480，码率为1000kbps，直至通信两端再次此检测到多媒体参数需调整时，则继续如上述方式进行调整。
值得注意的是，本实施例中的通信两端均可请求发起上述的多媒体参数调整，即，在上例中，第二移动终端12可执行类似第一移动终端上述步骤来可检测到多媒体参数进行调整，并与第一移动终端11进行多媒体参数的协商。当然，在其他实施例中，也可限定通信两端中只有呼叫终端具有该检测并请求调整多媒体参数的权限。
另外，本申请移动终端所在的通信网络不限为LTE集群专网，在其他实施例中，可以为任意无线通信网络。
具体，本实施例中的第一移动终端和第二移动终端可如下实施例所述。
请参阅图4，图4是本申请多媒体通信的参数调整方法一实施方式的流程图。该方法由上述图1所示的移动终端执行，本实施例由第一移动终端执行。具体，该方法包括：
S401：第一移动终端在与第二移动终端进行多媒体通信过程中，检测当前所述多媒体通信中所采用的多媒体参数是否需调整。
例如，第一移动终端和第二移动终端在进行视频通话过程中，定时或实时检测当前在该视频通话中采用的多媒体参数是否需要调整。具体地，第一移动终端可根据当前网络状态来判断是否进行调整，若当前网络状态满足设定的调整条件，则确定当前该视频通话中所采用的多媒体参数需重新调整。在其他实施例中，第一移动终端也可根据其他方面进行判断，例如用户是否切换其他多媒体通信模式等。
其中，当前网络状态包括丢包率、当前网络速率、带宽、接收信号中的至少一种。
在另一实施例中，该S401具体包括：
第一移动终端每隔设定时间统计在所述设定时间内多媒体关键帧丢失率；判断是否连续若干次统计得到的所述多媒体关键帧丢失率均超过门限值，若是，则确定当前所述多媒体通信中所采用的多媒体参数需要调整。
S402：在检测到所述多媒体参数需调整时，生成多媒体参数的协商请求，并将所述协商请求发送至所述第二移动终端。
本实施例中，该协商请求包括建议调整至的至少一组多媒体参数信息。该S402中的所述生成多媒体参数的协商请具体可包括：确定适合于当前网络状态的至少一组多媒体参数信息；生成包含所述确定的至少一组多媒体参数信息的协商请求。
例如，第一移动终端中预存有不同网络状态及其应采用的多媒体参数信息之间的对应关系。在确定需要重新调整此次多媒体通信中的多媒体参数时，从预存的对应关系中查找到与当前网络状态对应的至少一组多媒体参数信息，生成携带该至少一组多媒体参数信息的协商请求，并将请求发送至第二移动终端。
其中，上述对应关系可以由用户配置，或者由第一移动终端通过历史多媒体通信记录学习得到。
S403：在接收到所述第二移动终端响应所述协商请求而发送的确认消息时，根据所述确认消息调整在所述多媒体通信中所采用的多媒体参数。
本实施例中，所述确认消息包括对协商请求携带的至少一组多媒体参数信息的选择结果。该S403包括：根据所述确认消息中的所述选择结果确定最终协商的一组所述多媒体参数信息；采用所述确定的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
接上例，第二移动终端从接收到上述协商请求中选择一组与其当前网络状态匹配的且该第二移动终端能够支持的一组多媒体参数信息，并生成携带选择结果的确认消息，并发送至的第一移动终端。其中，该选择结果可以具体为该选择的一组多媒体参数信息或其标识，又或表示确认选择或不选择的字符。
若协商请求中携带的至少一组多媒体参数信息均不能满足上述选择条件时，则第一移动终端接收到的确认消息携带的选择结果为不选择，故重新根据当前网络状态选择其他多媒体参数信息，并携带至新的协商请求中，以重发至第二移动终端，第一移动终端可重复该步骤，直至第二移动终端确认从中选择了一组多媒体参数信息。
第一移动终端根据确认消息确定第二移动终端选择的一组多媒体参数信息后，采用该确定的多媒体参数信息进行当前与第二移动终端的多媒体通信。
本实施例中，第一移动终端在与第二移动终端进行多媒体通信过程中，对其采用的多媒体参数是否需调整进行检测，并在检测到需调整时与第二移动终端重新协商多媒体参数信息，并采用协商好的多媒体参数信息继续进行此次多媒体通信，故实现了在通信过程的多媒体参数的自适应调整，避免由于当前多媒体参数不匹配导致丢包等问题，进而保证该多媒通信质量，而且可以大大减少用户在移动过程中由于无线信号的变化带来通信卡顿、马赛克等的现象，提高用户使用感知。
请参阅图5，图5是本申请多媒体通信的参数调整方法另一实施方式的流程图。该方法由上述图1所示的移动终端执行，本实施例由第二移动终端执行。具体，该方法包括：
S501：在与第一移动终端进行多媒体通信过程中，第二移动终端接收所述第一移动终端发送的多媒体参数的协商请求。
S502：根据所述协商请求确定协商的多媒体参数信息。
其中，该协商请求可如上实施例所述，本S502包括：对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述最终协商的多媒体参数信息，具体如：对所述协商请求中的所述至少一组多媒体参数信息进行选择适合于当前网络状态的所述多媒体参数信息，作为所述协商的多媒体参数信息。
S503：向所述第一移动终端发送确认消息，以通知所述第一移动终端所述确定的所述多媒体参数信息。
例如，第二移动终端在接收到如上实施例中的协商请求时，解析该协商请求得到其携带的至少一组多媒体参数信息，并从该至少一组多媒体参数信息中选择一组与其当前网络状态匹配的且该第二移动终端能够支持的一组多媒体参数信息，即为最终协商好的多媒体参数信息，通常，若存在多组满足上述条件，则优先选择多媒体质量高的参数信息。第二移动终端生成携带选择结果的确认消息并发送至第一移动终端，以使第一移动终端可根据该选择结果重新调整此次多媒体通信中的多媒体参数。其中，该选择结果可以具体为该选择的一组多媒体参数信息或其标识，又或表示确认选择或不选择的字符。
若协商请求中携带的至少一组多媒体参数信息均不能满足上述选择条件时，则可如上实施例所述发送表示未选择字符的确认消息，以使第一移动终端重新进行协商；或者第二移动终端根据当前网络状态选择满足上述选择条件的至少一组多媒体参数信息，并生成携带该至少一组多媒体参数信息的确认消息至第一移动终端，第一移动终端执行如上S501-S503步骤，以从中选择一组多媒体参数信息，并进行反馈，如此重复，直至终端确认从对端发送的消息中选择一组多媒体参数信息，即，此时通信两端最终协商好多媒体参数。
S504：在与第一移动终端最终协商好一组多媒体参数信息时，采用所述最终协商好的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
在最终协商好该多媒体参数信息后，第一移动终端和第二移动终端均将该多媒体通信中采用的多媒体参数按照该最终协商好的多媒体参数信息进行调整，并采用调整后的多媒体参数继续进行该多媒体通信。
可以理解的是，上述的第一移动终端和第二移动终端未必根据当前网络状态选择多媒体参数信息，在其他实施例中，还可根据用户在移动终端中切换的多媒体通信模式中的参数需求等进行选择，故在此对本申请如何选择多媒体参数信息不作限定。
以上实施例中，该协商请求和确认消息可以为扩展的NAS信令，即区别于现有NAS信令，重新定义的两条新的NAS信令。所述多媒体参数包括分辨率、码率、帧率、比特率、视频质量等级、能力表、画质、打包方式中的至少一种，所述多媒体通信为视频通信。所述当前网络状态包括当前网络速率、带宽、接收信号中的至少一种。
请参阅图6，图6是本申请多媒体通信的参数调整装置一实施方式的结构示意图。该多媒体通信的参数调整装置60用于第一移动终端，具体包括检测模块61、协商模块62和调整模块63。
检测模块61用于在所述第一移动终端与第二移动终端进行多媒体通信过程中，检测当前所述多媒体通信中所采用的多媒体参数是否需调整；
协商模块62用于在检测到所述多媒体参数需调整时，生成多媒体参数的协商请求，并将所述协商请求发送至所述第二移动终端；
调整模块63用于在接收到所述第二移动终端响应所述协商请求而发送的确认消息时，根据所述确认消息调整所述第一移动终端在所述多媒体通信中所采用的多媒体参数。
可选地，检测模块61具体用于在所述第一移动终端与第二移动终端进行多媒体通信过程中，每隔设定时间统计在所述设定时间内多媒体关键帧丢失率；判断是否连续若干次统计得到的所述多媒体关键帧丢失率均超过门限值，若是，则确定当前所述多媒体通信中所采用的多媒体参数需要调整。
可选地，所述协商请求包括建议调整至的至少一组多媒体参数信息，协商模块62执行所述生成多媒体参数的协商请求步骤具体包括确定适合于当前网络状态的至少一组多媒体参数信息；生成包含所述确定的至少一组多媒体参数信息的协商请求。
可选地，所述确认消息包括对所述至少一组多媒体参数信息的选择结果；调整模块63具体用于在接收到所述第二移动终端响应所述协商请求而发送的确认消息时，根据所述确认消息中的所述选择结果确定最终协商的一组所述多媒体参数信息；并采用所述确定的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
请参阅图7，图7是本申请多媒体通信的参数调整装置另一实施方式的结构示意图。该多媒体通信的参数调整装置70用于可与第一移动终端进行多媒体通信的第二移动终端，具体包括：接收模块71、协商模块72、发送模块73和调整模块74。
接收模块71用于在所述第二移动终端与第一移动终端进行多媒体通信过程中，接收所述第一移动终端发送的多媒体参数的协商请求；
协商模块72用于根据所述协商请求确定协商的多媒体参数信息；
发送模块73用于向所述第一移动终端发送确认消息，以通知所述第一移动终端所述确定的所述多媒体参数信息；
调整模块74用于在与第一移动终端最终协商好一组多媒体参数信息时，采用所述最终协商好的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
可选地，所述协商请求包括建议调整至的至少一组多媒体参数信息；协商模块72具体用于对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述协商的多媒体参数信息；发送模块73具体用于生成包含选择结果的确认消息，并将所述确认消息发送至所述第一移动终端。
可选地，协商模块72具体用于对所述协商请求中的所述至少一组多媒体参数信息进行选择适合于当前网络状态的所述多媒体参数信息，作为所述协商的多媒体参数信息。
上述装置的模块可对应用于执行上述方法实施例中的步骤，具体说明请参阅上述方法实施例的描述。
可以理解的是，图6和图7所示实施例中的第一、第二移动终端可为图1所示的两个移动终端，即参数调整装置60和70既可用于图1所示的第一移动终端中，也可用于图1所示的第二移动终端中，且参数调整装置60和70可用于同一移动终端中。
参阅图8，图8是本申请移动终端一实施方式的结构示意图。本实施方式的移动终端80为图1所示的移动终端，如为第一移动终端，包括发送器/81、接收器82、处理器83、存储器84以及总线85。
发送器81用于向外部设备如基站发送消息。
接收器82用于接收外部设备如基站发送的消息。
存储器84用于存储被配置为被所述处理器83执行的计算机指令以及在处理器83工作过程中所需保存或缓存的数据。
在本实施例中，处理器83通过调用存储器84存储的计算机指令，用于执行以下两方面的至少一个：
第一方面：移动终端80为第一移动终端；
在所述第一移动终端与第二移动终端进行多媒体通信过程中，检测当前所述多媒体通信中所采用的多媒体参数是否需调整；
在检测到所述多媒体参数需调整时，生成多媒体参数的协商请求，并指示发送器81将所述协商请求发送至所述第二移动终端；
在接收器82接收到所述第二移动终端响应所述协商请求而发送的确认消息时，根据所述确认消息调整在所述多媒体通信中所采用的多媒体参数。
可选地，所述协商请求包括建议调整至的至少一组多媒体参数信息，处理器83执行所述生成多媒体参数的协商请求，包括：确定适合于当前网络状态的至少一组多媒体参数信息；生成包含所述确定的至少一组多媒体参数信息的协商请求。
可选地，所述确认消息包括对所述至少一组多媒体参数信息的选择结果，处理器83执行所述根据所述确认消息调整在所述多媒体通信所采用的多媒体参数，包括：根据所述确认消息中的所述选择结果确定最终协商的一组所述多媒体参数信息；采用所述确定的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
可选地，处理器83执行所述检测当前所述多媒体通信中所采用的多媒体参数是否需调整，包括：每隔设定时间统计在所述设定时间内多媒体关键帧丢失率；判断是否连续若干次统计得到的所述多媒体关键帧丢失率均超过门限值，若是，则确定当前所述多媒体通信中所采用的多媒体参数需要调整。
第二方面：移动终端80为第二移动终端；
在所述第二移动终端与第一移动终端进行多媒体通信过程中，获取接收器82接收的所述第一移动终端发送的多媒体参数的协商请求；
根据所述协商请求确定协商的多媒体参数信息；
指示发送器81向所述第一移动终端发送确认消息，以通知所述第一移动终端所述确定的所述多媒体参数信息；
在与第一移动终端最终协商好一组多媒体参数信息时，采用所述最终协商好的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
可选地，所述协商请求包括建议调整至的至少一组多媒体参数信息；处理器83执行所述根据所述协商请求确定协商的多媒体参数信息，包括：对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述协商的多媒体参数信息；处理器83执行所述指示发送器81向所述第一移动终端发送确认消息，包括：生成包含选择结果的确认消息，并指示发送器81将所述确认消息发送至所述第一移动终端。
可选地，处理器83执行所述对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述协商的多媒体参数信息，包括：对所述协商请求中的所述至少一组多媒体参数信息进行选择适合于当前网络状态的所述多媒体参数信息，作为所述协商的多媒体参数信息。
上述处理器83还可以称为CPU（Central Processing Unit，中央处理单元）。存储器84可以包括只读存储器和随机存取存储器，并向处理器83提供指令和数据。存储器84的一部分还可以包括非易失性随机存取存储器（NVRAM）。具体的应用中，移动终端的上述各个组件通过总线84耦合在一起，其中总线84除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线84。
上述本发明实施例揭示的方法可以应用于处理器83中，或者由处理器83实现。处理器83可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器83中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器83可以是通用处理器、数字信号处理器（DSP）、专用集成电路（ASIC）、现成可编程门阵列（FPGA）或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器84，处理器83读取存储器84中的信息，结合其硬件完成上述方法的步骤。
上述方案中，第一移动终端与第二移动终端进行多媒体通信过程中，能够对多媒体参数信息进行重新协商，并采用协商好的多媒体参数信息继续进行此次多媒体通信，故实现了在通信过程的多媒体参数的自适应配置，避免由于当前多媒体参数不匹配导致丢包等问题，进而保证该多媒通信质量。
在本申请所提供的几个实施方式中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施方式仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施方式方案的目的。
另外，在本申请各个实施方式中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器，或者网络设备等）或处理器（processor）执行本申请各个实施方式所述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（ROM，Read-Only Memory）、随机存取存储器（RAM，Random Access Memory）、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (20)

  1. 一种多媒体通信的参数调整方法，其中，包括：
    第一移动终端在与第二移动终端进行多媒体通信过程中，检测当前所述多媒体通信中所采用的多媒体参数是否需调整；
    在检测到所述多媒体参数需调整时，生成多媒体参数的协商请求，并将所述协商请求发送至所述第二移动终端；
    在接收到所述第二移动终端响应所述协商请求而发送的确认消息时，根据所述确认消息调整在所述多媒体通信中所采用的多媒体参数。
  2. 如权利要求1所述的参数调整方法，其中，所述检测当前所述多媒体通信中所采用的多媒体参数是否需调整，包括：
    每隔设定时间统计在所述设定时间内多媒体关键帧丢失率；
    判断是否连续若干次统计得到的所述多媒体关键帧丢失率均超过门限值，若是，则确定当前所述多媒体通信中所采用的多媒体参数需要调整。
  3. 如权利要求1所述的参数调整方法，其中，所述协商请求包括建议调整至的至少一组多媒体参数信息，
    所述生成多媒体参数的协商请求，包括：
    确定适合于当前网络状态的至少一组多媒体参数信息；
    生成包含所述确定的至少一组多媒体参数信息的协商请求。
  4. 如权利要求3所述的参数调整方法，其中，所述确认消息包括对所述至少一组多媒体参数信息的选择结果，
    所述根据所述确认消息调整在所述多媒体通信所采用的多媒体参数，包括：
    根据所述确认消息中的所述选择结果确定最终协商的一组所述多媒体参数信息；
    采用所述确定的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
  5. 如权利要求4所述的参数调整方法，其中，所述当前网络状态包括当前网络速率、带宽、接收信号中的至少一种。
  6. 如权利要求1所述的参数调整方法，其中，所述协商请求和所述确认消息为扩展的非接入层NAS信令。
  7. 如权利要求1所述的参数调整方法，其中，所述多媒体参数包括分辨率、码率、帧率、比特率、视频质量等级、能力表、画质、打包方式中的至少一种，所述多媒体通信为视频通信。
  8. 一种多媒体通信的参数调整方法，其中，包括：
    在与第一移动终端进行多媒体通信过程中，第二移动终端接收所述第一移动终端发送的多媒体参数的协商请求；
    根据所述协商请求确定协商的多媒体参数信息；
    向所述第一移动终端发送确认消息，以通知所述第一移动终端所述确定的所述多媒体参数信息；
    在与第一移动终端最终协商好一组多媒体参数信息时，采用所述最终协商好的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
  9. 如权利要求8所述的参数调整方法，其中，所述协商请求包括建议调整至的至少一组多媒体参数信息；
    所述根据所述协商请求确定协商的多媒体参数信息，包括：
    对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述协商的多媒体参数信息；
    所述向所述第一移动终端发送确认消息，包括：
    生成包含选择结果的确认消息，并将所述确认消息发送至所述第一移动终端。
  10. 如权利要求9所述的参数调整方法，其中，所述对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述协商的多媒体参数信息，包括：
    对所述协商请求中的所述至少一组多媒体参数信息进行选择适合于当前网络状态的所述多媒体参数信息，作为所述协商的多媒体参数信息。
  11. 如权利要求8所述的参数调整方法，其中，所述协商请求和所述确认消息为扩展的非接入层NAS信令。
  12. 如权利要求8所述的参数调整方法，其中，所述多媒体参数包括分辨率、码率、帧率、比特率、视频质量等级、能力表、画质、打包方式中的至少一种，所述多媒体通信为视频通信。
  13. 一种多媒体通信的参数调整装置，其中，所述参数调整装置用于第一移动终端，包括：
    检测模块，用于在所述第一移动终端与第二移动终端进行多媒体通信过程中，检测当前所述多媒体通信中所采用的多媒体参数是否需调整；
    协商模块，用于在检测到所述多媒体参数需调整时，生成多媒体参数的协商请求，并将所述协商请求发送至所述第二移动终端；
    调整模块，用于在接收到所述第二移动终端响应所述协商请求而发送的确认消息时，根据所述确认消息调整所述第一移动终端在所述多媒体通信中所采用的多媒体参数。
  14. 一种多媒体通信的参数调整装置，其中，所述参数调整装置用于可与第一移动终端进行多媒体通信的第二移动终端，包括：
    接收模块，用于在所述第二移动终端与第一移动终端进行多媒体通信过程中，接收所述第一移动终端发送的多媒体参数的协商请求；
    协商模块，用于根据所述协商请求确定协商的多媒体参数信息；
    发送模块，用于向所述第一移动终端发送确认消息，以通知所述第一移动终端所述确定的所述多媒体参数信息；
    调整模块，用于在与第一移动终端最终协商好一组多媒体参数信息时，采用所述最终协商好的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
  15. 一种移动终端，其中，所述移动终端为第一移动终端，包括发送器、接收器、存储器及处理器；
    所述存储器用于存储被配置为被所述处理器执行的计算机指令；
    所述处理器执行所述计算机指令，用于：
    在所述第一移动终端与第二移动终端进行多媒体通信过程中，检测当前所述多媒体通信中所采用的多媒体参数是否需调整；
    在检测到所述多媒体参数需调整时，生成多媒体参数的协商请求，并指示发送器将所述协商请求发送至所述第二移动终端；
    在所述接收器接收到所述第二移动终端响应所述协商请求而发送的确认消息时，根据所述确认消息调整在所述多媒体通信中所采用的多媒体参数。
  16. 如权利要求15所述的移动终端，其中，所述协商请求包括建议调整至的至少一组多媒体参数信息，
    所述处理器执行所述生成多媒体参数的协商请求，包括：
    确定适合于当前网络状态的至少一组多媒体参数信息；
    生成包含所述确定的至少一组多媒体参数信息的协商请求。
  17. 如权利要求16所述的移动终端，其中，所述确认消息包括对所述至少一组多媒体参数信息的选择结果，
    所述处理器执行所述根据所述确认消息调整在所述多媒体通信所采用的多媒体参数，包括：
    根据所述确认消息中的所述选择结果确定最终协商的一组所述多媒体参数信息；
    采用所述确定的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
  18. 一种移动终端，其中，所述移动终端为可与第一移动终端进行多媒体通信的第二移动终端，包括发送器、接收器、存储器及处理器；
    所述存储器用于存储被配置为被所述处理器执行的计算机指令；
    所述处理器执行所述计算机指令，用于：
    在所述第二移动终端与第一移动终端进行多媒体通信过程中，获取所述接收器接收的所述第一移动终端发送的多媒体参数的协商请求；
    根据所述协商请求确定协商的多媒体参数信息；
    指示所述发送器向所述第一移动终端发送确认消息，以通知所述第一移动终端所述确定的所述多媒体参数信息；
    在与第一移动终端最终协商好一组多媒体参数信息时，采用所述最终协商好的多媒体参数信息对应调整在所述多媒体通信中所采用的多媒体参数。
  19. 如权利要求18所述的移动终端，其中，所述协商请求包括建议调整至的至少一组多媒体参数信息；
    所述处理器执行所述根据所述协商请求确定协商的多媒体参数信息，包括：
    对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述协商的多媒体参数信息；
    所述处理器执行所述指示所述发送器向所述第一移动终端发送确认消息，包括：
    生成包含选择结果的确认消息，并指示所述发送器将所述确认消息发送至所述第一移动终端。
  20. 如权利要求19所述的移动终端，其中，所述处理器执行所述对所述协商请求中的所述至少一组多媒体参数信息进行选择，得到所述协商的多媒体参数信息，包括：
    对所述协商请求中的所述至少一组多媒体参数信息进行选择适合于当前网络状态的所述多媒体参数信息，作为所述协商的多媒体参数信息。
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