WO2015113487A1 - 通信业务释放的方法和装置 - Google Patents

通信业务释放的方法和装置 Download PDF

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Publication number
WO2015113487A1
WO2015113487A1 PCT/CN2015/071638 CN2015071638W WO2015113487A1 WO 2015113487 A1 WO2015113487 A1 WO 2015113487A1 CN 2015071638 W CN2015071638 W CN 2015071638W WO 2015113487 A1 WO2015113487 A1 WO 2015113487A1
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Prior art keywords
message
core network
release
response message
terminal
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PCT/CN2015/071638
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English (en)
French (fr)
Inventor
周晓海
程岳
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大唐移动通信设备有限公司
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Publication of WO2015113487A1 publication Critical patent/WO2015113487A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for releasing a communication service.
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • the patrol mode is mainly to test the network and calculate the CS (Circuit Switch) connection rate, PS (Packet Switch) connection rate, dropped call rate, PS download rate and other indicators as the network.
  • CS Circuit Switch
  • PS Packet Switch
  • the calling terminal and the called terminal are tested in the same vehicle, and the calling terminal initiates the CS service and the called party according to the set number of times, and the caller hangs up after about 40s.
  • the calling party and the called party release the service and release the RRC (Radio Resource Control) connection, and then the calling party re-initiates the call and repeats the process until the set number of times is reached.
  • RRC Radio Resource Control
  • the calling terminal may send a called busy message sent by the core network during the process of initiating a call to the called terminal, thereby causing the call to be disconnected, which affects the connection rate of the CS service.
  • the calling terminal hangs up, and the core network and UTRAN (UMTS Terrestrial Radio Access Network-UMTS) successfully release the resources allocated to the calling terminal.
  • the called terminal does not release the resources allocated to the called terminal in time. Therefore, when the calling terminal calls the called terminal again, the core network considers that the called terminal is in the process of maintaining the service, and the call of the calling terminal is not Turn on, affecting the CS turn-on rate.
  • the reason for the above phenomenon is that the signaling release method adopted by the CS service in the CS service or the CS+PS combined service when the signaling is released is affected by the change of the air interface wireless environment (for example, when multiple frequencies are multiplexed, the frequency is Interference between each other).
  • the terminal and the core network first interact with each other through a NAS (Non-Access Stratum) signaling release, and the core network allocates resources allocated by the core network, and then the core network initiates IU release to the UTRAN.
  • NAS Non-Access Stratum
  • the NAS message (DISCONNECT/RELEASE/RELEASE COMPLETE) in one direction (DonwLink/UpLink) may not be received by the receiver in time due to the change of the air interface wireless environment.
  • the NAS signaling release interaction process cannot be completed in time, and the CS service release is delayed, causing long-term occupation of network resources, and the calling terminal cannot perform the next CS service normally.
  • the embodiment of the invention provides a method and a device for releasing a communication service, which solves the problem that the CS service release lags due to the change of the air interface wireless environment, the network resource is occupied for a long time, and the calling terminal cannot perform the next CS service normally.
  • a method for releasing a communication service including: determining whether a response returned by a terminal for responding to a signaling release message sent by a core network is received within a time range of a preset timer. a message; wherein the preset timer satisfies a set time range; if the response message returned by the terminal for responding to the signaling release message sent by the core network is not received before the preset timer expires, generating and The signaling release message matches the simulated response message; and sends the analog response message to the core network.
  • the method further includes: receiving, sending, sending by the core network The signaling release message; determining whether the current network load exceeds a preset threshold; if the current network load exceeds a preset threshold, directly returning the analog response message to the core network; if the current network load does not exceed the preset The threshold value is sent to the terminal by the signaling release message; and the determining whether the response returned by the terminal for responding to the signaling release message sent by the core network is received within the preset time range of the preset timer The steps of the message.
  • the method further includes: if the preset is Receiving a response message returned by the terminal for responding to the signaling release message sent by the core network before the timer expires, sending the response message to the core network; and, closing the preset timer; After receiving the preset timer, the terminal receives the response returned by the terminal for responding to the core network.
  • the response message of the sent signaling release message intercepts the response message to prevent the response message from being returned to the core network.
  • the preset timer includes: a first preset timer and a second preset timer; wherein a time range of the first preset timer satisfies a first set time range, the second The time range of the preset timer satisfies a second set time range; if the response message returned by the terminal for responding to the signaling release message sent by the core network is not received before the preset timer expires,
  • the analog response message matching the signaling release message includes: if the response message RELEASE message for responding to the DISCONNECT message sent by the core network returned by the terminal is not received before the first preset timer expires, Generating a first analog response message that matches the DISCONNECT message; or, if the second preset timer expires, does not receive a response message RELEASE COMPLETE message returned by the terminal for responding to the RELEASE message sent by the core network And generating a second analog response message that matches the RELEASE message.
  • the method further includes: determining the pre- The initial configuration of the timer satisfies an initial condition for starting the preset timer; after the step of transmitting the analog response message to the core network, the method further includes: receiving a pair returned by the core network The simulation responds to the feedback message of the message and prevents the feedback message returned by the core network from being sent to the terminal.
  • an apparatus for releasing a communication service including: a first determining module, configured to determine whether a core sent by the terminal for responding to the core network is received within a time range of the preset timer a response message of the sent signaling release message; wherein the preset timer satisfies a set time range; and the generating module is configured to: before the preset timer expires, the terminal does not receive the response returned by the terminal for responding to the core network
  • the signaling response message of the message release message generates an analog response message that matches the signaling release message; the first sending module is configured to send the analog response message to the core network.
  • the device further includes: a first receiving module, configured to: when the first determining module determines whether a signaling release message sent by the terminal for responding to the core network is received within a time range of the preset timer Before receiving the response message, receiving a signaling release message sent by the core network; second The determining module is configured to determine whether the current network load exceeds a preset threshold; and the returning module is configured to directly return the simulated response message to the core network when the current network load exceeds a preset threshold; the second sending And the module is configured to send the signaling release message to the terminal when the current network load does not exceed the preset threshold; and execute the first determining module.
  • a first receiving module configured to: when the first determining module determines whether a signaling release message sent by the terminal for responding to the core network is received within a time range of the preset timer Before receiving the response message, receiving a signaling release message sent by the core network
  • second The determining module is configured to determine whether the current network load exceeds a preset threshold
  • the device further includes: a third sending module, configured to: when the first determining module determines, in the time range of the preset timer, whether the signaling release message sent by the terminal for responding to the core network is received After receiving the response message, the response message sent by the terminal for responding to the signaling release message sent by the core network is received before the preset timer expires, and the response message is sent to the core network; and the a preset timer, configured to intercept the response message returned by the terminal for responding to a signaling release message sent by the core network after the preset timer expires, to block the response message to block the The response message is returned to the core network.
  • a third sending module configured to: when the first determining module determines, in the time range of the preset timer, whether the signaling release message sent by the terminal for responding to the core network is received After receiving the response message, the response message sent by the terminal for responding to the signaling release message sent by the core network is received before the preset timer expires, and the response message is sent
  • the preset timer includes: a first preset timer and a second preset timer; wherein a time range of the first preset timer satisfies a first set time range, the second The time range of the preset timer satisfies the second set time range;
  • the generating module includes: a first generating submodule configured to receive the response core that is not returned by the terminal before the first preset timer expires A first analog response message matching the DISCONNECT message is generated when the response message of the DISCONNECT message is sent by the network, and the second generation submodule is configured to not receive the terminal before the second preset timer expires.
  • a second analog response message matching the RELEASE message is generated.
  • the apparatus further includes: a determining module, configured to: before the first determining module determines whether a response message for responding to a signaling release message sent by the core network is received within a time range of the preset timer, Determining that the initial configuration of the preset timer meets an initial condition for starting the preset timer; and the second receiving module is configured to: after the first sending module sends the analog response message to the core network, Receiving a feedback message to the analog response message returned by the core network, and preventing sending the feedback message returned by the core network to the terminal.
  • a determining module configured to: before the first determining module determines whether a response message for responding to a signaling release message sent by the core network is received within a time range of the preset timer, Determining that the initial configuration of the preset timer meets an initial condition for starting the preset timer
  • the second receiving module is configured to: after the first sending module sends the analog response message to the core network, Receiving a feedback message to the analog response message returned by the core
  • a computer program comprising computer readable code, when the computer readable code is run on a communication device, causing the communication device A method of releasing according to any of the above communication services is performed.
  • a computer readable medium storing a computer program as described above is provided.
  • a method and an apparatus for releasing a communication service may be configured by the UTRAN when the response message for responding to the signaling release message sent by the core network is not received by the terminal before the preset timer expires.
  • the RNC Radio Network Controller
  • the RNC directly generates an analog response message that matches the signaling release message, and sends the analog response message to the core network. Therefore, when the terminal is affected by the wireless air interface environment, and the signaling release message for responding to the core network is not returned in time, the UTRAN replaces the terminal to perform signaling interaction with the core network, releasing the CS service, and avoiding the air interface wireless.
  • the problem of sending and/or receiving NAS messages due to environmental changes is not timely.
  • the NAS signaling release interaction process is more timely and faster, and the release efficiency of the CS service is improved.
  • the core network and the UTRAN release the resources allocated to the terminal at a faster speed, thereby avoiding the problem of long-term occupation of the network resources, so that the calling terminal can quickly carry out the next CS communication service.
  • FIG. 1 is a flowchart of a method for releasing a communication service in a first embodiment of the present invention
  • FIG. 2 is a flowchart of a method for releasing a communication service in a second embodiment of the present invention
  • FIG. 3 is a flow chart of signaling interaction in a third embodiment of the present invention.
  • FIG. 5 is a flowchart of signaling interaction in a fourth embodiment of the present invention.
  • FIG. 7 is a structural block diagram of an apparatus for releasing a communication service in a fifth embodiment of the present invention.
  • FIG. 8 is a structural block diagram of an apparatus for releasing a communication service according to a sixth embodiment of the present invention.
  • FIG. 9 is a block diagram of an electronic device for performing the method in accordance with the present invention.
  • Figure 10 is a schematic illustration of a memory unit for holding or carrying program code implementing a method in accordance with the present invention.
  • the method for releasing the communication service may include the following steps:
  • Step 102 Determine whether a response message returned by the terminal for responding to the signaling release message sent by the core network is received within the time range of the preset timer.
  • the preset timer satisfies a set time range.
  • the UMTS (Universal Mobile Telecommunications System) network consists of two parts: one part is UTRAN; the other part is the core network CN (Core Net), and the UTRAN and CN parts are connected through the IU interface.
  • the core network can be logically divided into a CS domain and a PS domain.
  • the CS domain is a circuit switching core network of UMTS, which is used to support circuit data services.
  • the PS domain is a packet service core network of UMTS, which is used to support packet data services and some multimedia. business.
  • the core network side starts the signaling of the core network side while sending a signaling release message to the terminal, to determine whether the terminal returns a response message before the timer of the core network side times out.
  • the preset timer is added on the UTRAN side, and the preset timer meets the set time range, and the duration of the preset timer is smaller than the timing of the core network side.
  • the length of the device is added on the UTRAN side, and the
  • Step 104 If the response message returned by the terminal for responding to the signaling release message sent by the core network is not received before the preset timer expires, generating a match with the signaling release message. Simulate a response message.
  • Step 106 Send the analog response message to the core network.
  • the method for releasing the communication service may be performed by the UTRAN when the response message for responding to the signaling release message sent by the core network is not received by the terminal before the preset timer expires.
  • the RNC Radio Network Controller
  • the RNC directly generates an analog response message matching the signaling release message, and sends the analog response message to the core network. Therefore, when the terminal is affected by the wireless air interface environment and the signaling release message for responding to the core network is not returned in time, the UTRAN replaces the terminal to perform signaling interaction with the core network to release the CS service. The problem of unsuccessful NAS message transmission and/or reception caused by changes in the air interface wireless environment is avoided.
  • the NAS signaling release interaction process is more timely and faster, and the release efficiency of the CS service is improved.
  • the core network and the UTRAN release the resources allocated to the terminal at a faster speed, thereby avoiding the problem of long-term occupation of network resources; the calling terminal can quickly carry out the next CS communication service.
  • FIG. 2 there is shown a flow chart of a method of releasing a communication service in a second embodiment of the present invention.
  • the method for releasing the communication service may include:
  • Step 202 The RNC of the UTRAN receives the signaling release message sent by the core network.
  • the UTRAN includes a radio network controller RNC and one or more base stations Node B.
  • a timer is added to the RNC of the UTRAN to enable the RNC to act as a CS service release agent.
  • Step 204 The RNC of the UTRAN determines whether the current network load exceeds a preset threshold. If the network load exceeds the preset threshold, step 206 is performed; if the network load does not exceed the preset threshold, step 208 is performed.
  • Step 206 The RNC of the UTRAN directly returns an analog response message to the core network, and ends the operation process.
  • the release of the communication service needs to be completed as soon as possible, so that the proxy release function of the UTRAN can be directly started, that is, the signaling release message sent by the core network is directly generated. Simulate the response message and send the analog response message directly
  • the core network is sent to cause the core network to initiate an IU release to the UTRAN as soon as possible.
  • the UTRAN sends an RRC release message to notify the terminal and releases the resources allocated by the UTRAN.
  • the UTRAN sends an RB Release (Radio Bear Release) message to notify the terminal to release the CS service and release the resources allocated by the UTRAN. . That is, after the execution of the above step 206 is completed, it is determined that the communication service is successfully released, and the current operation flow is ended.
  • Step 208 The RNC of the UTRAN sends the signaling release message to the terminal.
  • Step 210 The RNC of the UTRAN determines whether the response message returned by the terminal for responding to the signaling release message sent by the core network is received within the time range of the preset timer; if the terminal returns before receiving the preset timer And responding to the signaling release message sent by the core network, performing step 212; if the preset timer expires before receiving the response message returned by the terminal for responding to the signaling release message sent by the core network Then, step 214 is performed; if the response message returned by the terminal for responding to the signaling release message sent by the core network is received after the preset timer expires, step 220 is performed.
  • Step 212 The RNC of the UTRAN sends a response message sent by the terminal for responding to the signaling release message sent by the core network to the core network; and the preset timer is closed, and the operation flow is ended.
  • the core network side starts the timer on the core network side when sending a signaling release message to the terminal, and the UTRAN starts after detecting that the core network side sends a signaling release message to the terminal.
  • Pre-set timer on the UTRAN side ie, preset timer in RNC.
  • the duration of the preset timer on the UTRAN side is smaller than the timer on the core network side. Since the duration of the preset timer on the UTRAN side is smaller than the timer on the core network side, when the preset timer expires, the response message sent by the terminal for responding to the signaling release message sent by the core network is received.
  • the terminal is not affected by the change of the air interface wireless environment at this time (or the current air interface wireless environment can be considered to be unchanged), and the terminal normally receives the signaling release message sent by the core network and returns a response message, RNC Then, the received response message is directly sent to the core network, and the core network is prompted to initiate IU release. That is, after the execution of the foregoing step 212 is completed, it is determined that the communication service is successfully released, and the preset timer is turned off (eg, the pre- The configuration condition of the timer is set to zero, wherein the configuration condition zero is used to instruct the preset timer to perform a shutdown operation, and the current operation flow is ended.
  • the preset timer is turned off (eg, the pre- The configuration condition of the timer is set to zero, wherein the configuration condition zero is used to instruct the preset timer to perform a shutdown operation, and the current operation flow is ended.
  • Step 214 the RNC of the UTRAN generates an analog response message that matches the signaling release message.
  • Step 216 the RNC of the UTRAN sends the analog response message to the core network.
  • Step 218 The RNC of the UTRAN receives the feedback message of the simulated response message returned by the core network, and prevents the feedback message sent by the core network from being sent to the terminal, and ends the operation process.
  • the RNRAN may wait for the core network to initiate the IU release, and the UTRAN initiates the release of the CS service. If it is a single CS service, the UTRAN may initiate an RRC release. If it is a CS+PS combined service, the RBRelease message is sent to the terminal to indicate release of the CS service and CS domain NAS signaling. That is, after the execution of the above step 218 is completed, it is determined that the communication service is successfully released, and the current operation flow is ended.
  • the feedback message eg. the RELEASE COMPLETE message
  • Step 220 The RNC of the UTRAN intercepts the response message to prevent the response message from being returned to the core network.
  • the foregoing step 220 may be performed immediately. Therefore, the foregoing step 220 may be performed before or after any one of the three steps of step 214, step 216 and step 218, which is not limited in this embodiment.
  • the RNC proxy may be used to release the CS service only when the network load exceeds the preset threshold (ie, the network congestion is determined), and the network load does not exceed the preset threshold. If the limit is used, the traditional CS service release is performed. Alternatively, the network load condition is not determined.
  • the RNC receives the signaling release message sent by the terminal for responding to the core network according to the time range of the preset timer. In response to the message, the RNC agent is executed to release the CS service.
  • the RNC of the UTRAN when the resource is congested, directly replaces the terminal to perform signaling interaction with the core network, thereby avoiding the terminal and the core network.
  • the long-term waiting in the signaling interaction process optimizes the CS service release process, speeds up the release of the CS service, saves time, and achieves the purpose of quickly releasing the occupied resources.
  • the RNC replaces the terminal and the core network by the RNC of the UTRAN when it is determined that the response message for responding to the signaling release message sent by the core network is not received before the preset timer expires.
  • the signaling interaction is performed to solve the problem that the NAS signaling release interaction process is slow and the communication service release efficiency is caused by the air interface wireless environment change.
  • the RNC of the UTRAN replaces the terminal and the core network to complete the NAS signaling interaction process, so that the UTRAN releases the resources allocated to the terminal at a faster rate, so as to quickly release the UE (User Equipment) and release resources, thereby improving resource utilization and User perception when the network is congested.
  • the present embodiment accelerates the release rate of the CS service, and also speeds up the release and recovery of the UTRAN radio resources, reduces network interference, and further improves resource utilization.
  • the traditional communication service release scheme there are two timers T306 and T308 on the core network side. Generally, the default settings of the T306 and T308 timers on the core network side are usually above 5s, and the total duration of the two timers is more than 10s.
  • the traditional communication service release process includes:
  • the core network sends a DISCONNECT message to the terminal.
  • the core network side initiates the T306 timer to enter the "disconnect indication" state, waiting for the RELEASE message sent by the terminal, and the terminal does not receive the core network transmission due to the influence of the air interface wireless environment change.
  • the DISCONNECT message therefore, does not send a RELEASE message to the core network according to the 3GPP (The 3rd Generation Partnership Project)-24.008 protocol.
  • the T306 timer expires on the core network side, the RELEASE message is sent to the terminal according to the 3GPP-24.008 protocol, and the T308 timer on the core network side is started, and the "release request" state is transferred.
  • the NAS signaling release cannot be completed in time, and the core network does not release the resources allocated for the CS service.
  • the core network considers that the terminal is always in the service hold state, and sends a prompt tone of the called busy to other terminals, resulting in The call is not connected.
  • the terminal and the core network are performing NAS signaling release.
  • the interaction is performed, it is affected by the change of the wireless environment of the air interface.
  • the terminal cannot receive and/or send the NAS signaling message in time, causing the delay of the NAS signaling release interaction process, and the communication service cannot be released in time.
  • T'306 timer corresponds to the T306 timer on the core network side, and the duration of the T'306 timer is smaller than the duration of the T306 timer.
  • the T'308 timer corresponds to the T308 timer on the core network side, and the duration of the T'308 timer is less than the duration of the T308 timer. among them,
  • T'306 timer when the UTRAN receives the DISCONNECT message sent by the core network, and transparently transmits the DISCONNECT message to the terminal through the UU interface, the T'306 timer is started (for example, the T'306 is used.
  • the configuration condition of the timer is set to 1), that is, the release agent function of starting UTRAN is determined. If the UTRAN receives the RELEASE message sent by the terminal before the T'306 timer expires, the T'306 timer is stopped.
  • the RELEASE message sent by the terminal is not received before the T'306 timer expires, the RELEASE message sent by the UTRAN is simulated by the UTRAN after the T'306 timer expires, and the analog message is sent to the core network through the IU port.
  • T'308 timer when the UTRAN receives the RELEASE message sent by the core network and transparently transmits the RELEASE message to the terminal through the UU interface, the T'308 timer is started (eg, the T'308 The configuration condition of the timer is set to 1), that is, the release agent function of starting UTRAN is determined. If the UTRAN receives the RELEASE COMPLETE message sent by the terminal before the T'308 timer expires, the T'308 timer is stopped.
  • the RELEASE COMPLETE message sent by the terminal is not received before the T'308 timer expires, the RELEASE COMPLETE message sent by the UTRAN is simulated by the UTRAN after the T'308 timer expires, and the analog message is sent to the core network through the IU interface.
  • the function of the CS service release agent is implemented by using the above T'306 timer and the T'308 timer for the RNC in the UTRAN by way of example.
  • the core network sends a DISCONNECT message to the terminal to notify the terminal to release the CS service.
  • the specific steps are as follows. The following steps may be performed when the current network load exceeds a preset threshold, or when the current network load does not exceed a preset threshold. Preferably, Perform the following steps when the current network load does not exceed the preset threshold:
  • the UTRAN determines that the configuration condition of the T'306 timer is zero. Add a first preset timer on the UTRAN side (in the RNC of the UTRAN), that is, the T'306 timer
  • the CS RAB Radio Access Bearer, user plane bearer for transmitting voice data and multimedia services between the UE and the CN
  • SETUP Process indicates that the CS communication service is established.
  • the UTRAN receives the DISCONNECT message sent by the MSC (Mobile Switching Center, the MSC is one of the core network elements of the communication system), and transparently transmits the DISCONNECT message to the terminal through the UU interface, and determines the timing.
  • the configuration condition of the device T'306 is not zero, that is, the T'306 timer is started. That is, in this embodiment, when the configuration condition of the timer is zero, the timer is not started; on the contrary, when the configuration condition of the timer is not zero, the timer is started.
  • the UTRAN determines whether a response message RELEASE message returned by the terminal for responding to the DISCONNECT message sent by the core network is received before the T'306 timer expires.
  • the UTRAN receives the response message RELEASE message returned by the terminal for responding to the DISCONNECT message sent by the core network before the timeout of the T'306 timer expires, the RELACH message is transparently transmitted to the core network through the IU interface. Thereby completing the release of the communication service. And setting the configuration condition of the T'306 timer to zero, that is, turning off the T'306 timer, ending the proxy release process of the UTRAN.
  • the third step is performed.
  • the UTRAN In a third step, the UTRAN generates a first analog response message that matches the DISCONNECT message.
  • the RELEASE response message returned by the terminal is still not received, and the UTRAN generates a first analog response message that matches the DISCONNECT message, and passes the first analog response message through the IU interface. Sent to the core network.
  • the first analog response message may be a simulated analog message generated by the RELEASE message. interest.
  • the UTRAN receives the first feedback message sent by the core network to the first analog response message, and prevents the first feedback message returned by the core network from being sent to the terminal.
  • the core network sends a feedback message of the RELEASE COMPLETE to the terminal to determine that the NAS signaling release interaction process ends.
  • the UTRAN sends the first analog response message to the core network through the IU interface, and after receiving the first analog response message, the core network sends a first feedback message to the terminal, where The first feedback message will be transparently transmitted to the terminal through the UTRAN.
  • the UTRAN receives the first feedback message of the first analog response message returned by the core network, it directly determines that the NAS signaling release interaction process ends, and the first A feedback message is sent to the terminal.
  • the UTRAN After determining the end of the NAS signaling release interaction process, the UTRAN waits for the core network to issue an IU Release Command, the IU releases the command, the UTRAN initiates the CS Domain, the CS domain is released, and finally, passes the CS RAB or RRC (Radio Resource Control, Radio Resource Control Protocol).
  • the Release Process that is, the release of the communication service is completed through the CS RAB or RRC release process. For example, when it is a single CS service, the UTRAN may initiate an RRC release. If it is a CS+PS combined service, the UTRAN sends an RB Release message to the terminal to release the CS service. This saves the entire signaling interaction time and speeds up the communication service release process.
  • the UTRAN may receive a response message RELEASE message delayed by the terminal. If the UTRAN receives the response message RELEASE message delayed by the terminal after the T'306 timer expires, the fifth step is performed. It should be noted that the fifth step operation may be performed after the response message RELEASE message for responding to the DISCONNECT message sent by the core network is not received after the timeout of the T'306 timer expires. The steps are performed before or after any of the fourth steps, and the embodiment does not limit this.
  • the UTRAN performs a discarding process on the delayed return response message RELEASE message, that is, intercepts the RELEASE message to prevent the RELEASE message from being returned to the core network.
  • the specific step of the core network sending a RELEASE message to the terminal to notify the terminal to release the CS service is as follows.
  • the following steps may be performed when the current network load exceeds a preset threshold. Performed when the current network load does not exceed the preset threshold.
  • the following steps are performed when the current network load does not exceed the preset threshold:
  • the UTRAN determines that the configuration condition of the T'308 timer is zero.
  • a second preset timer that is, a T'308 timer, is added to the UTRAN side.
  • CS RAB SETUP Process CS communication service is established.
  • the UTRAN receives the DISCONNECT message sent by the UE terminal, and transparently transmits the DISCONNECT message to the core network through the IU interface. Then, the UTRAN receives the RELEASE message sent by the MSC on the core network side, and transparently transmits the RELEASE message to the terminal through the UU interface, and determines that the configuration condition of the T'308 timer is not zero, that is, the T is started. '308 timer. That is, in this embodiment, when the configuration condition of the timer is zero, the timer is not started; on the contrary, when the configuration condition of the timer is not zero, the timer is started.
  • the UTRAN determines whether the response message RELEASE COMPLETE returned by the terminal for responding to the RELEASE message sent by the core network is received before the T'308 timer expires.
  • the UTRAN receives the response message RELEASE COMPLETE message returned by the terminal for responding to the RELEASE message sent by the core network before the T'308 timer expires, the RELEASE COMPLETE message is transparently transmitted to the core through the IU interface. Net, thus completing the release of communication services. And setting the configuration condition of the T'308 timer to zero, that is, turning off the T'308 timer, ending the proxy release process of the UTRAN.
  • the third step is performed.
  • the UTRAN In a third step, the UTRAN generates a second analog response message that matches the RELEASE message.
  • the UTRAN After the T'308 timer expires, the RELEASE returned by the terminal is still not received.
  • the COMPLETE response message the UTRAN generates a second analog response message that matches the RELEASE message, and sends the second analog response message to the core network through the IU interface.
  • the second analog response message may be a message generated by simulating the response message RELEASE COMPLETE message.
  • the UTRAN After the UTRAN receives the second analog response message returned by the core network, it is determined that the NAS signaling release interaction process ends. After determining that the NAS signaling release interaction process ends, the UTRAN waits for the core network to issue an IU Release Command, the IU releases the command, the UTRAN initiates the CS Domain, and the CS domain is released. Finally, the release of the communication service is completed through the CS RAB or RRC release procedure. This saves the entire signaling interaction time and speeds up the communication service release process.
  • the UTRAN may receive a response message RELEASE COMPLETE message delayed by the terminal. If the UTRAN receives the response message RELEASE COMPLETE message delayed by the terminal after the T'308 timer expires, the fourth step is performed. It should be noted that the fourth step may be performed after the response message RELEASE COMPLETE message for responding to the RELEASE message sent by the core network is not received after the T'308 timer expires. This embodiment does not limit this before or after execution.
  • the UTRAN performs a discarding process on the delayed return response message RELEASE COMPLETE message, that is, intercepts the RELEASE COMPLETE message to prevent the RELEASE COMPLETE message from being returned to the core network.
  • the UTRAN in the release process of the communication service by the core network by sending a DISCONNECT message to the terminal, when the TLE306 timer receives the RELEASE message before the timer expires, the RELEASE message is directly returned; when the T'306 is timed. After the device has not received the RELEASE message after the timeout, the UTRAN returns the first analog response message instead of the RELEASE message returned by the terminal, completing the signaling interaction and releasing the communication service.
  • the TLE308 timer receives the RELEASE COMPLETE message before the timeout expires, the RELEASE COMPLETE message is directly returned; after the T'308 timer expires If the RELEASE COMPLETE message is not received, it is returned by UTRAN.
  • the second analog response message replaces the RELEASE COMPLETE message returned by the terminal to complete the signaling interaction and release of the communication service.
  • the method for releasing the communication service described in this embodiment satisfies the different communication service release requirements in different situations, and selects the best communication service release method, completes the release of the communication service in time, and releases the occupied resources as quickly as possible. Improve the release speed of communication services and resource utilization.
  • FIG. 5 a flow chart of signaling interaction in a fourth embodiment of the present invention is shown.
  • the specific steps of the core network sending a DISCONNECT message to the terminal to notify the terminal to release the CS service are as follows:
  • the UTRAN receives the DISCONNECT message sent by the MSC on the core network side, and determines whether the current network load exceeds a preset threshold.
  • the communication service release operation may be performed according to the traditional communication service release procedure; or the step of releasing the CS service by the corresponding RNC agent in the foregoing third embodiment may be performed.
  • the second step is performed. It should be noted that, when the result of the determination is that the current network load exceeds the preset threshold, the second step is performed, which is a preferred solution in this embodiment, but is not the only solution. For example, when the result of the determination is that the current network load exceeds the preset threshold, the step of releasing the CS service by the corresponding RNC agent in the foregoing third embodiment may also be performed.
  • the UTRAN In the second step, the UTRAN generates a first analog response message that matches the DISCONNECT message sent by the core network according to the received DISCONNECT message sent by the core network. And blocking the core network to send the DISCONNECT message to the terminal.
  • the UTRAN sends the first analog response message to the core network.
  • the UTRAN receives the first feedback message sent by the core network to the first analog response message.
  • the first feedback message may be a RELEASE COMPLETE message.
  • the UTRAN After receiving the first feedback message, the UTRAN determines that the NAS signaling release interaction process is completed, the UTRAN waits for the core network to initiate the IU release, and the UTRAN initiates the release of the CS service.
  • the release of the communication service is completed through the CSRAB or RRC release process. For example, when it is a single CS service, the UTRAN may initiate an RRC release. If it is a CS+PS combined service, the UTRAN sends an RB Release to the terminal. The message indicates that the CS service is released.
  • the UTRAN receives the DISCONNECT message sent by the UE terminal, transparently transmits the DISCONNECT message to the core network through the IU interface, and then the UTRAN receives the signaling release message RELEASE message sent by the MSC on the core network side.
  • the specific steps of the core network sending a RELEASE message to the terminal to notify the terminal to release the CS service are as follows:
  • the UTRAN receives the RELEASE message sent by the core network, and determines whether the current network load exceeds a preset threshold.
  • the communication service release operation may be performed according to the traditional communication service release procedure; or the step of releasing the CS service by the corresponding RNC agent in the foregoing third embodiment may be performed.
  • the second step is performed. It should be noted that, when the result of the determination is that the current network load exceeds the preset threshold, the second step is performed, which is a preferred solution in this embodiment, but is not the only solution. For example, when the result of the determination is that the current network load exceeds the preset threshold, the step of releasing the CS service by the corresponding RNC agent in the foregoing third embodiment may also be performed.
  • the UTRAN In the second step, the UTRAN generates a second analog response message that matches the RELEASE message sent by the core network according to the received RELEASE message sent by the core network. And blocking the core network to send the RELEASE message to the terminal.
  • the UTRAN sends the second analog response message to the core network.
  • the core network receives the second analog response returned by the UTRAN, and determines that the NAS signaling release interaction process is completed, the UTRAN waits for the core network to initiate the IU release, and the UTRAN initiates the release of the CS service.
  • the release of the communication service is completed through the CS RAB or the RRC release process. For example, when it is a single CS service, the UTRAN may initiate an RRC release. If it is a CS+PS combined service, the UTRAN sends an RB Release message to the terminal to release the CS service.
  • the method in this embodiment directly starts the release agent function and generates a simulated ring when the UTRAN detects that the current network load is high or the network resource congestion needs to release the resource as soon as possible.
  • the terminal and the core network complete the NAS signaling exchange release process, release the core network resources, and prompt the core network to release the IU release to the UTRAN as soon as possible to complete the release of the communication service, thereby avoiding the signaling interaction between the terminal and the core network. Waiting for a long time, optimizing the release process of the CS service, speeding up the release of the CS service, saving time, and achieving the purpose of quickly releasing the occupied resources.
  • FIG. 7 a block diagram of a device for releasing a communication service in a fifth embodiment of the present invention is shown.
  • the device for releasing the communication service includes:
  • the first determining module 302 is configured to determine whether a response message for responding to the signaling release message sent by the core network is received within a time range of the preset timer.
  • the preset timer satisfies a set time range.
  • the generating module 304 is configured to generate a simulated response that matches the signaling release message when the response message returned by the terminal for responding to the signaling release message sent by the core network is not received before the preset timer expires. Message.
  • the first sending module 306 is configured to send the analog response message to the core network.
  • the device for releasing the communication service in the embodiment may not receive the response message returned by the terminal for responding to the signaling release message sent by the core network before the preset timer expires, and may be used by the UTRAN.
  • the RNC Radio Network Controller
  • the RNC directly generates an analog response message that matches the signaling release message, and sends the analog response message to the core network. Therefore, when the terminal is affected by the wireless air interface environment and the signaling release message for responding to the core network is not returned in time, the UTRAN replaces the terminal to perform signaling interaction with the core network to release the CS service. The problem of unsuccessful NAS message transmission and/or reception caused by changes in the wireless environment of the air interface is avoided.
  • the NAS provided by the embodiment of the present invention enables the NAS The signaling release interaction process is more timely and faster, which improves the release efficiency of the CS service.
  • the core network and the UTRAN release the resources allocated to the terminal at a faster speed, thereby avoiding the problem of long-term occupation of network resources; the calling terminal can quickly carry out the next CS communication service.
  • the device for releasing the communication service includes:
  • the first receiving module 402 is configured to receive a signaling release message sent by the core network.
  • the second determining module 404 is configured to determine whether the current network load exceeds a preset threshold
  • the return module 406 is executed:
  • the return module 406 is configured to return the simulated response message directly to the core network.
  • the second sending module 408 is executed:
  • the second sending module 408 is configured to send the signaling release message to the terminal.
  • the determining module 410 is configured to determine that an initial configuration of the preset timer satisfies an initial condition for starting the preset timer.
  • the first determining module 412 is configured to determine whether a response message for responding to the signaling release message sent by the core network is received within the time range of the preset timer.
  • the preset timer satisfies a set time range.
  • the third sending module 414 is configured to send the response message to the core network when receiving a response message returned by the terminal for responding to the signaling release message sent by the core network before the preset timer expires; The preset timer is turned off.
  • the intercepting module 416 is configured to: when receiving the response message returned by the terminal for responding to the signaling release message sent by the core network, after the preset timer expires, intercepting the response message to prevent the response message from being returned to Core Network.
  • the generating module 418 is configured to generate a simulated response that matches the signaling release message when the response message returned by the terminal for responding to the signaling release message sent by the core network is not received before the preset timer expires. Message.
  • the preset timer may include: a first preset timer and a second preset a timer, wherein the time range of the first preset timer satisfies a first set time range (eg, the duration of the first preset timer is smaller than the T306 timer of the core network side), the second pre- The time range of the timer is set to meet the second set time range (for example, the duration of the second preset timer is smaller than the T308 timer of the core network side).
  • the generating module may include 418:
  • the first generation sub-module 4182 is configured to: when the first preset timer expires, does not receive a response message RELEASE message returned by the terminal for responding to the DISCONNECT message sent by the core network, and generates a match with the DISCONNECT message.
  • the first analog response message is configured to: when the first preset timer expires, does not receive a response message RELEASE message returned by the terminal for responding to the DISCONNECT message sent by the core network, and generates a match with the DISCONNECT message.
  • the second generation sub-module 4184 is configured to generate, when the second preset timer expires, a response message RELEASE COMPLETE message returned by the terminal for responding to the RELEASE message sent by the core network, generating a message related to the DISCONNECT message Matching second analog response message.
  • the first sending module 420 is configured to send the analog response message to the core network.
  • the second receiving module 422 is configured to receive a feedback message sent by the core network to the analog response message, and prevent sending the feedback message returned by the core network to the terminal.
  • the UTRAN waits for the core network to initiate the release of the IU, and the UTRAN initiates the release of the CS service. If it is a single CS service, the UTRAN may The RRC release is initiated. If it is a CS+PS combined service, the RB Release message is sent to the terminal to release the CS service.
  • all the modules in the present implementation may be, but are not limited to, being disposed in the RNC on the UTRAN side.
  • the device for releasing the communication service when the resource is congested, the RNC of the UTRAN directly replaces the terminal to perform signaling interaction with the core network, thereby avoiding the signaling interaction between the terminal and the core network.
  • the long wait time optimizes the release process of the CS service, speeds up the release of the CS service, saves time, and achieves the purpose of quickly releasing the occupied resources.
  • the RNC replaces the terminal and the core network by the RNC of the UTRAN when it is determined that the response message for responding to the signaling release message sent by the core network is not received before the preset timer expires.
  • the signaling interaction is performed to solve the problem that the NAS signaling release interaction flow caused by the change of the air interface wireless environment is slow and affects the release efficiency of the communication service.
  • RNRAN's RNC replaces the terminal
  • the NAS signaling interaction process is completed with the core network, so that the UTRAN releases the resources allocated to the terminal at a faster rate, so as to quickly release the UE and release the resources, and improve resource utilization and user perception when the network is congested.
  • the present embodiment accelerates the release rate of the CS service, and also speeds up the release and recovery of the UTRAN radio resources, reduces network interference, and further improves resource utilization.
  • modules in the devices of the embodiments can be adaptively changed and placed in one or more devices different from the embodiment.
  • the modules or units or components of the embodiments may be combined into one module or unit or component, and further they may be divided into a plurality of sub-modules or sub-units or sub-components.
  • any combination of the features disclosed in the specification, including the accompanying claims, the abstract and the drawings, and any methods so disclosed, or All processes or units of the device are combined.
  • Each feature disclosed in this specification (including the accompanying claims, the abstract and the drawings) may be replaced by alternative features that provide the same, equivalent or similar purpose.
  • the various component embodiments of the present invention may be implemented in hardware, or in a program module running on one or more processors, or in a combination thereof.
  • a microprocessor or digital signal processor may be used in practice to implement some or all of the functionality of some or all of the components and systems of communication service release in accordance with embodiments of the present invention.
  • the invention can also be implemented as a device or device program (e.g., a computer program and a computer program product) for performing some or all of the methods described herein.
  • a program implementing the invention may be stored on a computer readable medium or may be in the form of one or more signals. Such signals may be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.
  • Figure 9 illustrates a communication device, such as an RNC, that can implement a method of communication traffic release in accordance with the present invention.
  • the RNC conventionally includes a processor 910 and a computer program product or computer readable medium in the form of a memory 920.
  • the memory 920 may be an electronic memory such as a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), an EPROM, a hard disk, or a ROM.
  • Memory 920 has a memory space 930 for program code 931 for performing any of the method steps described above.
  • storage space 930 for program code may include various program code 931 for implementing various steps in the above methods, respectively.
  • These program codes can be from one or more Read or write to one or more computer program products in a computer program product.
  • These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks.
  • Such a computer program product is typically a portable or fixed storage unit as described with reference to FIG.
  • the storage unit may have a storage section, a storage space, and the like arranged similarly to the storage 920 in the electronic device of FIG.
  • the program code can be compressed, for example, in an appropriate form.
  • the storage unit includes computer readable code 931', ie, code that can be read by a processor, such as 910, that when executed by an electronic device causes the electronic device to perform each of the methods described above step.

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Abstract

本发明提供了一种通信业务释放的方法和装置，其中，通信业务释放的方法包括：判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信令释放消息的响应消息；其中，所述预置定时器满足设定时间范围；若在所述预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息，则生成与所述信令释放消息相匹配的模拟响应消息；并，将所述模拟响应消息发送至所述核心网。通过本发明，使得NAS信令释放交互流程更及时、更迅速，提高了CS业务的释放效率。

Description

通信业务释放的方法和装置 技术领域
本发明涉及通信技术领域，具体涉及一种通信业务释放的方法和装置。
背景技术
为检查全国各地的网络质量，电信设备制造商经常组织对各地的TD-SCDMA(Time Division-Synchronous Code Division Multiple Access，时分同步码分多址，中国提出的第三代移动通信标准)网络进行巡检，巡检方式主要是对网络进行业务测试，计算CS(Circuit Switch，电路交换)接通率、PS(Packet Switch，分组交换)接通率、掉话率、PS下载速率等指标作为对网络质量的衡量标准。
其中，在对CS接通率进行的测试过程中，主叫终端和被叫终端同车测试，主叫终端根据设定次数发起CS业务和被叫接通，保持40s左右之后由主叫挂断，主被叫双方释放业务并释放RRC(Radio Resource Control，无线资源控制协议)连接，然后主叫重新发起呼叫，重复进行此过程直到达到设定次数。
但在测试过程中，主叫终端在向被叫终端发起呼叫的重复过程中会出现核心网发送的被叫忙消息，从而导致呼叫未接通，影响CS业务的接通率。在分析信令之后发现，在前一次呼叫过程结束，主叫终端挂机后，核心网、UTRAN(UMTS Terrestrial Radio Access Network-UMTS，陆地无线接入网)均顺利释放掉为主叫终端分配的资源，然而被叫终端则没有及时释放掉为被叫终端分配的资源，因此，当主叫终端再次呼叫被叫终端时，核心网认为被叫终端处于业务保持过程中，导致主叫终端的呼叫未接通，影响CS接通率。
造成上述现象的原因在于，CS业务或CS+PS组合业务中的CS业务在信令释放时采用的信令释放方法受到空中接口无线环境变化的影响(例如，多个频率复用时，频率之间的相互干扰)。具体地，在CS业务释放过程中，先由终端和核心网通过NAS(Non-Access Stratum，非接入层)信令交互，释放核心网分配的资源，然后由核心网向UTRAN发起IU释放，指示UTRAN 释放IU口资源、无线资源及UTRAN分配的本地资源。由于终端与核心网进行的NAS信令释放交互流程中，某一方向(DonwLink/UpLink)的NAS消息(DISCONNECT/RELEASE/RELEASE COMPLETE)由于空中接口无线环境变化原因，可能没有及时被接收方收到，从而导致NAS信令释放交互流程无法及时完成，进而导致CS业务释放滞后，造成网络资源的长时间占用，以及主叫终端无法正常地进行下一次CS业务。
发明内容
本发明实施例提供一种通信业务释放的方法和装置，以解决空中接口无线环境变化造成的CS业务释放滞后、网络资源长时间占用、以及主叫终端无法正常地进行下一次CS业务的问题。
依据本发明实施例的一个方面，提供了一种通信业务释放的方法，包括：判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信令释放消息的响应消息；其中，所述预置定时器满足设定时间范围；若在所述预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息，则生成与所述信令释放消息相匹配的模拟响应消息；并，将所述模拟响应消息发送至所述核心网。
优选地，在所述判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信令释放消息的响应消息的步骤之前，所述方法还包括：接收核心网发送的信令释放消息；判断当前网络负荷是否超过预设门限值；若当前网络负荷超过预设门限值，直接向所述核心网返回所述模拟响应消息；若当前网络负荷未超过预设门限值，则将所述信令释放消息发送给终端；并，执行所述判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信令释放消息的响应消息的步骤。
优选地，在所述判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信令释放消息的响应消息的步骤之后，所述方法还包括：若在预置定时器超时前接收到终端返回的用于响应核心网发送的信令释放消息的响应消息，则将所述响应消息发送给所述核心网；并，关闭所述预置定时器；若在所述预置定时器超时后接收到终端返回的用于响应核心网发 送的信令释放消息的响应消息，则拦截所述响应消息，以阻止所述响应消息返回至核心网。
优选地，所述预置定时器包括：第一预置定时器和第二预置定时器；其中，所述第一预置定时器的时间范围满足第一设定时间范围，所述第二预置定时器的时间范围满足第二设定时间范围；所述若在所述预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息，则生成与所述信令释放消息相匹配的模拟响应消息，包括：若在所述第一预置定时器超时前未接收到终端返回的用于响应核心网发送的DISCONNECT消息的响应消息RELEASE消息，则生成与所述DISCONNECT消息相匹配的第一模拟响应消息；或，若在所述第二预置定时器超时前未接收到终端返回的用于响应核心网发送的RELEASE消息的响应消息RELEASE COMPLETE消息，则生成与所述RELEASE消息相匹配的第二模拟响应消息。
优选地，在所述判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信令释放消息的响应消息的步骤之前，所述方法还包括：确定所述预置定时器的初始配置满足启动所述预置定时器的初始条件；在所述将所述模拟响应消息发送至所述核心网步骤之后，所述方法还包括：接收所述核心网返回的对所述模拟响应消息的反馈消息，并阻止向所述终端发送所述核心网返回的所述反馈消息。
依据本发明实施例的另一个方面，提供了一种通信业务释放的装置，包括：第一判断模块，配置为判断在预置定时器的时间范围内是否接收到终端发送的用于响应核心网发送的信令释放消息的响应消息；其中，所述预置定时器满足设定时间范围；生成模块，配置为在所述预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，生成与所述信令释放消息相匹配的模拟响应消息；第一发送模块，配置为将所述模拟响应消息发送至所述核心网。
优选地，所述装置还包括：第一接收模块，配置为在所述第一判断模块判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信令释放消息的响应消息之前，接收核心网发送的信令释放消息；第二 判断模块，配置为判断当前网络负荷是否超过预设门限值；返回模块，配置为在当前网络负荷超过预设门限值时，直接向所述核心网返回所述模拟响应消息；第二发送模块，配置为在当前网络负荷未超过预设门限值，将所述信令释放消息发送给终端；并执行所述第一判断模块。
优选地，所述装置还包括：第三发送模块，配置为在所述第一判断模块判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信令释放消息的响应消息之后，在预置定时器超时前接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，将所述响应消息发送给所述核心网；并，关闭所述预置定时器；拦截模块，配置为在所述预置定时器超时后接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，拦截所述响应消息，以阻止所述响应消息返回至核心网。
优选地，所述预置定时器包括：第一预置定时器和第二预置定时器；其中，所述第一预置定时器的时间范围满足第一设定时间范围，所述第二预置定时器的时间范围满足第二设定时间范围；所述生成模块包括：第一生成子模块，配置为在所述第一预置定时器超时前未接收到终端返回的用于响应核心网发送的DISCONNECT消息的响应消息RELEASE消息时，生成与所述DISCONNECT消息相匹配的第一模拟响应消息；第二生成子模块，配置为在所述第二预置定时器超时前未接收到终端返回的用于响应核心网发送的RELEASE消息的响应消息RELEASE COMPLETE消息时，生成与所述RELEASE消息相匹配的第二模拟响应消息。
优选地，所述装置还包括：确定模块，配置为在所述第一判断模块判断在预置定时器的时间范围内是否接收到用于响应核心网发送的信令释放消息的响应消息之前，确定所述预置定时器的初始配置满足启动所述预置定时器的初始条件；第二接收模块，配置为在所述第一发送模块将所述模拟响应消息发送至所述核心网之后，接收所述核心网返回的对所述模拟响应消息的反馈消息，并阻止向所述终端发送所述核心网返回的所述反馈消息。
依据本发明实施例的又一个方面，提供了一种计算机程序，包括计算机可读代码，当所述计算机可读代码在通信设备上运行时，导致所述通信设备 执行根据上述任一个通信业务释放的方法。
依据本发明实施例的再一个方面，提供了一种计算机可读介质，其中存储了如上所述的计算机程序。
根据本发明实施例提供的一种通信业务释放的方法和装置，在预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，可以由UTRAN的RNC(Radio Network Controller，无线网络控制器)直接生成与所述信令释放消息相匹配的模拟响应消息，并将所述模拟响应消息发送至所述核心网。从而，实现了在终端受无线空中接口环境影响，没有及时返回用于响应核心网发送的信令释放消息时，由UTRAN代替终端与核心网进行信令交互，释放CS业务，避免了空中接口无线环境变化造成的NAS消息发送和/或接收不及时的问题。通过本发明实施例提供的方案，使得NAS信令释放交互流程更及时、更迅速，提高了CS业务的释放效率。进而使得核心网、UTRAN以更快速度释放给终端分配的资源，避免了网络资源的长时间占用的问题，使得主叫终端可以快速开展下一次CS通信业务。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂，以下特举本发明的具体实施方式。
附图说明
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本发明的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：
图1是本发明第一实施例中一种通信业务释放的方法的流程图；
图2是本发明第二实施例中一种通信业务释放的方法的流程图；
图3是本发明第三实施例中一种信令交互流程图；
图4是本发明第三实施例中又一种信令交互流程图；
图5是本发明第四实施例中一种信令交互流程图；
图6是本发明第四实施例中又一种信令交互流程图；
图7是本发明第五实施例中一种通信业务释放的装置的结构框图；
图8是本发明第六实施例中一种通信业务释放的装置的结构框图；
图9是用于执行根据本发明的方法的电子设备的框图；以及
图10是用于保持或者携带实现根据本发明的方法的程序代码的存储单元的示意图。
具体实施方式
下面将参照附图更详细地描述本发明的示例性实施例。虽然附图中显示了本发明的示例性实施例，然而应当理解，可以以各种形式实现本发明而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本发明，并且能够将本发明的范围完整的传达给本领域的技术人员。
参照图1，示出了本发明第一实施例中一种通信业务释放的方法的流程图。在本实施例中，所述通信业务释放的方法可以包括以下步骤：
步骤102，判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信令释放消息的响应消息。其中，所述预置定时器满足设定时间范围。
UMTS(Universal Mobile Telecommunications System，通用移动通信系统)网络由两部分组成：一部分是UTRAN；另一部分是核心网CN(Core Net)，UTRAN与CN两部分通过IU接口连接。核心网从逻辑上可分为CS域和PS域，CS域是UMTS的电路交换核心网，用于支持电路数据业务，PS域是UMTS的分组业务核心网，用于支持分组数据业务和一些多媒体业务。核心网侧在向终端发送信令释放消息的同时会启动所述核心网侧的定时器，以确定终端是否在所述核心网侧的定时器超时前返回了响应消息。在本发明实施例中，在UTRAN侧新增了所述预置定时器，所述预置定时器满足设定时间范围可以包括：所述预置定时器的时长小于所述核心网侧的定时器的时长。
步骤104，若在所述预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息，则生成与所述信令释放消息相匹配的 模拟响应消息。
步骤106，将所述模拟响应消息发送至所述核心网。
综上所述，本发明实施例所述的通信业务释放的方法，在预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，可以由UTRAN的RNC(Radio Network Controller，无线网络控制器)直接生成与所述信令释放消息相匹配的模拟响应消息，并将所述模拟响应消息发送至所述核心网。从而，实现了在终端受无线空中接口环境影响，没有及时返回用于响应核心网发送的信令释放消息时，由UTRAN代替终端与核心网进行信令交互，释放CS业务。避免了空中接口无线环境变化造成的NAS消息发送和/或接收不及时的问题。通过本发明实施例提供的方案，使得NAS信令释放交互流程更及时、更迅速，提高了CS业务的释放效率。进而使得核心网、UTRAN以更快速度释放给终端分配的资源，避免了网络资源的长时间占用的问题；主叫终端可以快速开展下一次CS通信业务。
参照图2，示出了本发明第二实施例中一种通信业务释放的方法的流程图。
在本实施例中，所述通信业务释放的方法可以包括：
步骤202，UTRAN的RNC接收核心网发送的信令释放消息。
UTRAN包括无线网络控制器RNC和一个或多个基站Node B，本实施例中，在UTRAN的RNC中新增定时器，以使RNC作为CS业务释放代理。
步骤204，UTRAN的RNC判断当前网络负荷是否超过预设门限值。若网络负荷超过预设门限值，则执行步骤206；若网络负荷未超过预设门限值，则执行步骤208。
步骤206，UTRAN的RNC直接向所述核心网返回模拟响应消息，结束本次操作流程。
在本实施例中，当资源拥塞时或者忙时，则需要尽快完成通信业务的释放，因此可以直接启动UTRAN的代理释放功能，即直接生成与所述核心网发送的信令释放消息相匹配的模拟响应消息，并直接将所述模拟响应消息发 送至核心网，促使所述核心网尽快向所述UTRAN发起IU释放。对于单CS业务，UTRAN发送RRC释放消息通知终端并释放UTRAN分配的资源，对于组合业务，UTRAN发送RB Release(Radio Bear Release，无线链路承载释放)消息通知终端释放CS业务并释放UTRAN分配的资源。即，在上述步骤206执行完成之后，则确定所述通信业务顺利释放完成，结束本次操作流程。
步骤208，UTRAN的RNC将所述信令释放消息发送给终端。
步骤210，UTRAN的RNC判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信令释放消息的响应消息；若在预置定时器超时前接收到终端返回的用于响应核心网发送的信令释放消息的响应消息，则执行步骤212；若在所述预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息，则执行步骤214；若在所述预置定时器超时后接收到终端返回的用于响应核心网发送的信令释放消息的响应消息，则执行步骤220。
步骤212，UTRAN的RNC将接收到的终端返回的用于响应核心网发送的信令释放消息的响应消息发送给所述核心网；并，关闭所述预置定时器，结束本次操作流程。
在本实施例中，核心网侧在向终端发送信令释放消息时会启动所述核心网侧的定时器，同时，UTRAN在监测到核心网侧向终端发送了信令释放消息后，会启动UTRAN侧的预置定时器(即RNC中的预置定时器)。其中，UTRAN侧的预置定时器的时长小于核心网侧的定时器。由于UTRAN侧的预置定时器的时长小于核心网侧的定时器，因此，当在所述预置定时器超时前接收到终端返回的用于响应核心网发送的信令释放消息的响应消息，则可以确定认为终端此时没有受到空中接口无线环境变化的影响(或，可以认为当前空中接口无线环境没有发生变化)，终端正常接收到核心网发送的信令释放消息且返回了响应消息，RNC则将接收到的响应消息直接发送至核心网，促使所述核心网发起IU释放。即，在上述步骤212执行完成之后，则确定所述通信业务顺利释放完成，关闭所述预置定时器(如，可以将所述预 置定时器的配置条件设置为零，其中，所述配置条件零用于指示所述预置定时器执行关闭操作)，结束本次操作流程。
步骤214，UTRAN的RNC生成与所述信令释放消息相匹配的模拟响应消息。
步骤216，UTRAN的RNC将所述模拟响应消息发送至所述核心网。
步骤218，UTRAN的RNC接收所述核心网返回的对所述模拟响应消息的反馈消息，并阻止向所述终端发送所述核心网返回的所述反馈消息，结束本次操作流程。
在本实施例中，在UTRAN的RNC接收到核心网侧发送所述反馈消息(如，RELEASE COMPLETE消息)之后可以确定NAS信令释放过程结束，UTRAN等待核心网发起IU释放，UTRAN发起CS业务释放，如果是单CS业务，UTRAN可发起RRC释放，如果是CS+PS组合业务，向终端发送RBRelease消息指示释放CS业务和CS域NAS信令。即，在上述步骤218执行完成之后，则确定所述通信业务顺利释放完成，结束本次操作流程。
步骤220，UTRAN的RNC拦截所述响应消息，以阻止所述响应消息返回至核心网。
在本实施例中，只要在所述预置定时器超时后，接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，即可立即执行上述步骤220。因此，上述步骤220可以在上述步骤214、步骤216和步骤218三个步骤中的任意一个步骤之前或之后执行，本实施例对此不做限制。
这里需要说明的是，在实际应用中，也可以仅在判断网络负荷超过预设门限值(即确定网络拥塞)时，执行RNC代理释放CS业务的步骤，而在网络负荷未超过预设门限值时，执行传统的CS业务释放；或者，不对网络负荷情况进行判断，只根据RNC在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信令释放消息的响应消息的情况，执行RNC代理释放CS业务。
综上所述，本实施例所述的通信业务释放的方法，在资源拥塞时，UTRAN的RNC直接代替终端与核心网进行信令交互，避免了终端与核心网 之间在信令交互过程中的长时间等待，优化了CS业务释放流程，加快CS业务释放速度，节约时间，实现了快速释放被占用的资源的目的。在资源处于非拥塞状态时，则在判断出在预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，由UTRAN的RNC代替终端与核心网进行信令交互，解决了空口无线环境变化导致的NAS信令释放交互流程慢、影响通信业务释放效率的问题。UTRAN的RNC代替终端与核心网完成NAS信令交互流程，使得UTRAN以更快速度释放给终端分配的资源，达到快速释放UE(User Equipment，用户终端)、释放资源的目的，提高资源利用率和网络拥塞时的用户感知。同时，本实施例在加快CS业务释放速度的同时，也使得UTRAN的无线资源释放、回收速度加快，降低了网络干扰，进一步提高了资源利用率。
在传统的通信业务释放方案中，核心网侧有T306和T308两个定时器。一般地，核心网侧T306、T308定时器的默认设置通常都在5s以上，两个定时器总共时长配置超过10s。传统的通信业务释放流程包括：
核心网向终端发送DISCONNECT消息，同时，核心网侧启动T306定时器转入"disconnect indication"状态，等待终端发送的RELEASE消息，而终端因为受到空中接口无线环境变化的影响没有收到核心网发送的DISCONNECT消息，因此没有按3GPP(The 3rd Generation Partnership Project，第三代合作伙伴计划)-24.008协议约定向核心网发送RELEASE消息。核心网侧T306定时器超时后，按照3GPP-24.008协议约定向终端发送RELEASE消息，并启动核心网侧的T308定时器，转入"release request"状态。如果终端在这段时间内仍然受到空中接口无线环境的影响，没有接收到核心网发送的RELEASE消息，NAS信令释放则无法及时完成，进而核心网不会释放为CS业务分配的资源。此时如果有其它终端呼叫这个终端，由于终端与核心网的NAS信令释放信令流程未完成，因此核心网认为此终端一直处于业务保持状态，向其它终端发送被叫忙的提示音，导致呼叫未接通。
上述传统的通信业务释放流程中，终端与核心网在进行NAS信令释放 交互时，会受到空中接口无线环境变化影响，从而导致终端不能及时接收和/或发送NAS信令消息，造成NAS信令释放交互流程延迟，进而导致通信业务不能及时释放。
针对通信业务释放过程中NAS信令无法及时被终端接收和/或发送的情况，本发明实施例中，在UTRAN侧新增两个定时器：T′306定时器和T′308定时器。其中，所述T′306定时器对应于所述核心网侧的T306定时器，且所述T′306定时器的时长小于所述T306定时器的时长。所述T′308定时器对应于所述核心网侧的T308定时器，且所述T′308定时器的时长小于所述T308定时器的时长。其中，
T′306定时器：当UTRAN接收到核心网发送的DISCONNECT消息，并通过UU口将所述DISCONNECT消息透传给终端时，则启动所述T′306定时器(如，将所述T′306定时器的配置条件设置为1)，即确定启动UTRAN的释放代理功能。如果在T′306定时器超时前UTRAN接收到终端发送的RELEASE消息，则停止T′306定时器。如果在T′306定时器超时前没接收到终端发送的RELEASE消息，则在T′306定时器超时后由UTRAN模拟终端发送的RELEASE消息，并通过IU口将模拟消息发送给核心网。
T′308定时器：当UTRAN接收到核心网发送的RELEASE消息，并通过UU口将所述RELEASE消息透传给终端时，则启动所述T′308定时器(如，将所述T′308定时器的配置条件设置为1)，即确定启动UTRAN的释放代理功能。如果在所述T′308定时器超时前UTRAN接收到终端发送的RELEASE COMPLETE消息，则停止T′308定时器。如果在T′308定时器超时前没接收到终端发送的RELEASE COMPLETE消息，则在T′308定时器超时后由UTRAN模拟终端发送的RELEASE COMPLETE消息，并通过IU接口将模拟消息发给核心网。
以下，通过实例对UTRAN中的RNC使用上述T′306定时器和T′308定时器，实现CS业务释放代理的功能进行说明。
参照图3，示出了本发明第三实施例中一种信令交互流程图。在本实施例中，所述核心网向终端发送DISCONNECT消息，通知终端释放CS业务 的具体步骤如下(这里需要说明的是，以下步骤可以在当前网络负荷超过预设门限值时执行，也可以在当前网络负荷未超过预设门限值时执行。其中，较佳地，在当前网络负荷未超过预设门限值时执行如下步骤)：
第一步，UTRAN确定T′306定时器的配置条件为零。在UTRAN侧(UTRAN的RNC中)新增一个第一预置定时器，即，T′306定时器
在本实施例中，CS RAB(Radio Access Bearer，用户平面的承载，用于UE和CN之间传送语音数据及多媒体业务)SETUP Process，表示CS通信业务建立。UTRAN接收到核心网侧MSC(Mobile Switching Center，移动交换中心，MSC是通信系统的核心网元之一)发送的DISCONNECT消息，将所述DISCONNECT消息通过UU口透传给终端，并确定所述定时器T′306的配置条件不为零，即，启动所述T′306定时器。也即，本实施例中，当定时器的配置条件为零时，不启动定时器；相反，当定时器的配置条件不为零时，则启动定时器。
第二步，UTRAN判断在所述T′306定时器超时前是否接收到终端返回的用于响应核心网发送的DISCONNECT消息的响应消息RELEASE消息。
若在所述T′306定时器超时前，UTRAN接收到终端返回的用于响应核心网发送的DISCONNECT消息的响应消息RELEASE消息，则将所述RELEASE消息通过IU接口透传给所述核心网，从而完成通信业务的释放。并将所述T′306定时器的配置条件设置为零，即关闭所述T′306定时器，结束UTRAN的代理释放流程。
若在所述T′306定时器超时后未接收到终端返回的用于响应核心网发送的DISCONNECT消息的响应消息RELEASE消息，则执行第三步操作。
第三步，UTRAN生成与所述DISCONNECT消息相匹配的第一模拟响应消息。
在所述T′306定时器超时后仍然没有接收到终端返回的RELEASE响应消息，UTRAN则生成与所述DISCONNECT消息相匹配的第一模拟响应消息，并将所述第一模拟响应消息通过IU接口发送至所述核心网。其中，所述第一模拟响应消息可以是一个模拟所述响应消息RELEASE消息生成的消 息。
第四步，UTRAN接收所述核心网返回的对所述第一模拟响应消息的第一反馈消息，并阻止向所述终端发送所述核心网返回的所述第一反馈消息。
一般地，在核心网接收到终端返回的RELEASE消息之后，会向终端发送一个RELEASE COMPLETE的反馈消息，用来确定NAS信令释放交互流程结束。在本实施例中，UTRAN将所述第一模拟响应消息通过IU接口发送给所述核心网，核心网在接收到所述第一模拟响应消息之后，会向终端发送第一反馈消息，所述第一反馈消息将通过UTRAN透传至终端。较佳地，在本实施例中，当UTRAN接收所述核心网返回的对所述第一模拟响应消息的第一反馈消息之后，直接确定NAS信令释放交互流程结束，不再将所述第一反馈消息发送至终端。在确定NAS信令释放交互流程结束之后，UTRAN等待核心网发出IU Release Command，IU释放指令，UTRAN发起CS Domain，CS域释放，最后，通过CS RAB or RRC(Radio Resource Control，无线资源控制协议)Release Process，即，通过CS RAB或RRC释放过程完成通信业务的释放。如，当是单CS业务时，UTRAN可发起RRC释放，如果是CS+PS组合业务，UTRAN则向终端发送RB Release消息指示释放CS业务。进而节约了整个信令交互时间，加快了通信业务释放流程。
在所述T′306定时器超时后，所述UTRAN可能会接收到终端延迟返回的响应消息RELEASE消息。若在所述T′306定时器超时后，所述UTRAN接收到终端延迟返回的响应消息RELEASE消息，则执行第五步操作。这里需要说明的是，所述第五步操作可以在上述当T′306定时器超时后未接收到终端返回的用于响应核心网发送的DISCONNECT消息的响应消息RELEASE消息之后执行的第三步和第四步中的任一步骤之前或之后执行，本实施例对此不做限制。
第五步，由所述UTRAN对所述延迟返回的响应消息RELEASE消息做丢弃处理，即，拦截所述RELEASE消息，以阻止所述RELEASE消息返回至核心网。
参照图4，示出了本发明第三实施例中又一种信令交互流程图。在本实施例中，所述核心网向终端发送RELEASE消息，通知终端释放CS业务的具体步骤如下(这里需要说明的是，以下步骤可以在当前网络负荷超过预设门限值时执行，也可以在当前网络负荷未超过预设门限值时执行。其中，较佳地，在当前网络负荷未超过预设门限值时执行如下步骤)：
第一步，UTRAN确定所T′308定时器的配置条件为零。在UTRAN侧新增一个第二预置定时器，即，T′308定时器。
在本实施例中，CS RAB SETUP Process，CS通信业务建立。UTRAN接收到UE终端发送的DISCONNECT消息，通过IU接口把DISCONNECT消息透传给核心网。然后，UTRAN接收到核心网侧的MSC发送的RELEASE消息，将所述RELEASE消息通过UU接口透传给终端，并确定所述T′308定时器的配置条件不为零，即，启动所述T′308定时器。也即，本实施例中，当定时器的配置条件为零时，不启动定时器；相反，当定时器的配置条件不为零时，则启动定时器。
第二步，UTRAN判断在所述T′308定时器超时前是否接收到终端返回的用于响应核心网发送的RELEASE消息的响应消息RELEASE COMPLETE。
若在所述T′308定时器超时前，UTRAN接收到终端返回的用于响应核心网发送的RELEASE消息的响应消息RELEASE COMPLETE消息，则将所述RELEASE COMPLETE消息通过IU接口透传给所述核心网，从而完成通信业务的释放。并将所述T′308定时器的配置条件设置为零，即关闭所述T′308定时器，结束UTRAN的代理释放流程。
若在所述T′308定时器超时后未接收到终端返回的用于响应核心网发送的RELEASE消息的响应消息RELEASE COMPLETE消息，则执行第三步操作。
第三步，UTRAN生成与所述RELEASE消息相匹配的第二模拟响应消息。
在所述T′308定时器超时后仍然没有接收到终端返回的RELEASE  COMPLETE响应消息，UTRAN则生成与所述RELEASE消息相匹配的第二模拟响应消息，并将所述第二模拟响应消息通过IU接口发送至所述核心网。其中，所述第二模拟响应消息可以是一个模拟所述响应消息RELEASE COMPLETE消息生成的消息。
较佳地，在本实施例中，当UTRAN接收所述核心网返回的所述第二模拟响应消息之后，则确定NAS信令释放交互流程结束。在确定NAS信令释放交互流程结束之后，UTRAN等待核心网发出IU Release Command，IU释放指令，UTRAN发起CS Domain，CS域释放，最后，通过CS RAB或RRC释放过程完成通信业务的释放。进而节约了整个信令交互时间，加快了通信业务释放流程。
在所述T′308定时器超时后，所述UTRAN可能会接收到终端延迟返回的响应消息RELEASE COMPLETE消息。若在所述T′308定时器超时后，所述UTRAN接收到终端延迟返回的响应消息RELEASE COMPLETE消息，则执行第四步操作。这里需要说明的是，所述第四步操作可以在上述当T′308定时器超时后未接收到终端返回的用于响应核心网发送的RELEASE消息的响应消息RELEASE COMPLETE消息之后执行的第三步之前或之后执行，本实施例对此不做限制。
第四步，由所述UTRAN对所述延迟返回的响应消息RELEASE COMPLETE消息做丢弃处理，即，拦截所述RELEASE COMPLETE消息，以阻止所述RELEASE COMPLETE消息返回至核心网。
综上所述，在核心网通过向终端发送DISCONNECT消息进行通信业务的释放流程中，当所述T′306定时器超时前接收到RELEASE消息，则直接返回RELEASE消息；当所述T′306定时器超时后未接收到RELEASE消息，则由UTRAN返回第一模拟响应消息代替终端返回的RELEASE消息，完成信令交互和通信业务的释放。在核心网通过向终端发送RELEASE消息进行通信业务的释放流程中，当所述T′308定时器超时前接收到RELEASE COMPLETE消息，则直接返回RELEASE COMPLETE消息；在所述T′308定时器超时后未接收到RELEASE COMPLETE消息，则由UTRAN返回第 二模拟响应消息代替终端返回的RELEASE COMPLETE消息，完成信令交互和通信业务的释放。本实施例所述的通信业务释放的方法满足了不同情况下不同的通信业务释放需求，同时选择了最佳的通信业务释放方法，及时完成了通信业务的释放，最快速度地释放占用资源，提高通信业务释放速度及资源利用率。
参照图5，示出了本发明第四实施例中一种信令交互流程图。在本实施例中，所述核心网向终端发送DISCONNECT消息，通知终端释放CS业务的具体步骤如下：
第一步，UTRAN接收核心网侧的MSC发送的DISCONNECT消息，并判断当前网络负荷是否超过预设门限值。
若判断结果为当前网络负荷未超过预设门限值时，可以按照传统的通信业务释放流程执行通信业务释放操作；或者可以执行前述第三实施例中对应的RNC代理释放CS业务的步骤。
若判断结果为当前网络负荷超过预设门限值时，则执行第二步操作。这里需要说明的是，在判断结果为当前网络负荷超过预设门限值时，则执行第二步操作，是本实施例中的一种优选方案，但不是唯一方案。例如，在判断结果为当前网络负荷超过预设门限值时，也可以执行前述第三实施例中对应的RNC代理释放CS业务的步骤。
第二步，UTRAN根据接收到的核心网发送的DISCONNECT消息，生成与所述核心网发送的DISCONNECT消息相匹配的第一模拟响应消息。并，阻止所述核心网将所述DISCONNECT消息发送至终端。
第三步，UTRAN将所述第一模拟响应消息发送至核心网。
第四步，UTRAN接收所述核心网返回的对所述第一模拟响应消息的第一反馈消息。其中，所述第一反馈消息可以是RELEASE COMPLETE消息。
UTRAN接收到所述第一反馈消息，则确定NAS信令释放交互流程完成，UTRAN等待核心网发起IU释放，UTRAN发起CS业务释放。通过CSRAB或RRC释放过程完成通信业务的释放。如，当是单CS业务时，UTRAN可发起RRC释放，如果是CS+PS组合业务，UTRAN则向终端发送RB Release 消息指示释放CS业务。
参照图6，示出了本发明第四实施例中又一种信令交互流程图。在本实施例中，UTRAN接收到UE终端发送的DISCONNECT消息，通过IU接口把DISCONNECT消息透传给核心网，然后UTRAN接收核心网侧的MSC发送的信令释放消息RELEASE消息。其中，核心网向终端发送RELEASE消息，通知终端释放CS业务的具体步骤如下：
第一步，UTRAN接收核心网发送的RELEASE消息，并判断当前网络负荷是否超过预设门限值。
若判断结果为当前网络负荷未超过预设门限值时，可以按照传统的通信业务释放流程执行通信业务释放操作；或者可以执行前述第三实施例中对应的RNC代理释放CS业务的步骤。
若判断结果为当前网络负荷超过预设门限值时，则执行第二步操作。这里需要说明的是，在判断结果为当前网络负荷超过预设门限值时，则执行第二步操作，是本实施例中的一种优选方案，但不是唯一方案。例如，在判断结果为当前网络负荷超过预设门限值时，也可以执行前述第三实施例中对应的RNC代理释放CS业务的步骤。
第二步，UTRAN根据接收到的核心网发送的RELEASE消息，生成与所述核心网发送的RELEASE消息相匹配的第二模拟响应消息。并，阻止所述核心网将所述RELEASE消息发送至终端。
第三步，UTRAN将所述第二模拟响应消息发送至核心网。
核心网接收到所述UTRAN返回的第二模拟响应，则确定NAS信令释放交互流程完成，UTRAN等待核心网发起IU释放，UTRAN发起CS业务释放。通过CS RAB或RRC释放过程完成通信业务的释放。如，当是单CS业务时，UTRAN可发起RRC释放，如果是CS+PS组合业务，UTRAN则向终端发送RB Release消息指示释放CS业务。
综上所述，本实施例所述的方法，在UTRAN检测到当前网络负荷较高或网络资源拥塞需要尽快释放资源时，直接启动释放代理功能，生成模拟响 应消息，代替终端与核心网完成NAS信令交互释放流程，释放核心网资源，促使核心网尽快向UTRAN发起IU释放完成通信业务释放，避免了终端与核心网之间在信令交互过程中的长时间等待，优化了CS业务释放流程，加快CS业务释放速度，节约时间，实现了快速释放被占用的资源的目的
需要说明的是，对于前述的方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为依据本发明，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作并不一定是本发明所必需的。
基于与上述通信业务释放的方法同一发明构思，参照图7，示出了本发明第五实施例中一种通信业务释放的装置的结构框图。在本实施例中，所述通信业务释放的装置包括：
第一判断模块302，配置为判断在预置定时器的时间范围内是否接收到用于响应核心网发送的信令释放消息的响应消息。其中，所述预置定时器满足设定时间范围。
生成模块304，配置为在所述预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，生成与所述信令释放消息相匹配的模拟响应消息。
第一发送模块306，配置为将所述模拟响应消息发送至所述核心网。
综上所述，本实施例所述的通信业务释放的装置，在预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，可以由UTRAN的RNC(Radio Network Controller，无线网络控制器)直接生成与所述信令释放消息相匹配的模拟响应消息，并将所述模拟响应消息发送至所述核心网。从而，实现了在终端受无线空中接口环境影响，没有及时返回用于响应核心网发送的信令释放消息时，由UTRAN代替终端与核心网进行信令交互，释放CS业务。避免了空中接口无线环境变化造成的NAS消息发送和/或接收不及时的问题，。通过本发明实施例提供的方案，使得NAS 信令释放交互流程更及时、更迅速，提高了CS业务的释放效率。进而使得核心网、UTRAN以更快速度释放给终端分配的资源，避免了网络资源的长时间占用的问题；主叫终端可以快速开展下一次CS通信业务。
参照图8，示出了本发明第六实施例中一种通信业务释放的装置的结构框图。在本实施例中，所述通信业务释放的装置包括：
第一接收模块402，配置为接收核心网发送的信令释放消息；
第二判断模块404，配置为判断当前网络负荷是否超过预设门限值；
当判断结果为当前网络负荷超过预设门限值时，则执行返回模块406：
返回模块406，配置为直接向所述核心网返回所述模拟响应消息。
当判断结果为当前网络负荷未超过预设门限值时，则执行第二发送模块408：
第二发送模块408，配置为将所述信令释放消息发送给终端。
确定模块410，配置为确定所述预置定时器的初始配置满足启动所述预置定时器的初始条件。
第一判断模块412，配置为判断在预置定时器的时间范围内是否接收到用于响应核心网发送的信令释放消息的响应消息。其中，所述预置定时器满足设定时间范围。
第三发送模块414，配置为在预置定时器超时前接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，将所述响应消息发送给所述核心网；并，关闭所述预置定时器。
拦截模块416，配置为在所述预置定时器超时后接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，拦截所述响应消息，以阻止所述响应消息返回至核心网。
生成模块418，配置为在所述预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，生成与所述信令释放消息相匹配的模拟响应消息。
在本实施例中，所述预置定时器可以包括：第一预置定时器和第二预置 定时器；其中，所述第一预置定时器的时间范围满足第一设定时间范围(如，第一预置定时器的时长小于前述核心网侧的T306定时器)，所述第二预置定时器的时间范围满足第二设定时间范围(如，第二预置定时器的时长小于前述核心网侧的T308定时器)。较佳地，所述生成模块可以包括418：
第一生成子模块4182，配置为在所述第一预置定时器超时前未接收到终端返回的用于响应核心网发送的DISCONNECT消息的响应消息RELEASE消息时，生成与所述DISCONNECT消息相匹配的第一模拟响应消息。
第二生成子模块4184，配置为在所述第二预置定时器超时前未接收到终端返回的用于响应核心网发送的RELEASE消息的响应消息RELEASE COMPLETE消息时，生成与所述DISCONNECT消息相匹配的第二模拟响应消息。
第一发送模块420，配置为将所述模拟响应消息发送至所述核心网。
第二接收模块422，配置为接收所述核心网返回的对所述模拟响应消息的反馈消息，并阻止向所述终端发送所述核心网返回的所述反馈消息。
在本实施例中，当核心网接收到终端返回的响应消息，或接收到UTRAN返回的模拟响应消息之后，UTRAN等待核心网发起IU释放，UTRAN发起CS业务释放，如果是单CS业务，UTRAN可发起RRC释放，如果是CS+PS组合业务，向终端发送RB Release消息指示释放CS业务。
这里需要说明的是，本实施上述所有模块可以但不仅限于都设置在UTRAN侧的RNC中。
综上所述，本实施例所述的通信业务释放的装置，在资源拥塞时，UTRAN的RNC直接代替终端与核心网进行信令交互，避免了终端与核心网之间在信令交互过程中的长时间等待，优化了CS业务释放流程，加快CS业务释放速度，节约时间，实现了快速释放被占用的资源的目的。在资源处于非拥塞状态时，则在判断出在预置定时器超时前未接收到终端返回的用于响应核心网发送的信令释放消息的响应消息时，由UTRAN的RNC代替终端与核心网进行信令交互，解决了空中接口无线环境变化导致的NAS信令释放交互流程慢、影响通信业务释放效率的问题。UTRAN的RNC代替终端 与核心网完成NAS信令交互流程，使得UTRAN以更快速度释放给终端分配的资源，达到快速释放UE、释放资源的目的，提高资源利用率和网络拥塞时的用户感知。同时，本实施例在加快CS业务释放速度的同时，也使得UTRAN的无线资源释放、回收速度加快，降低了网络干扰、进一步提高了资源利用率。
对于上述装置实施例而言，由于其与方法实施例基本相似，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。
以上对本发明所提供的一种通信业务释放的方法和装置，进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。在此提供的算法和显示不与任何特定通信设备、虚拟系统或者其它设备固有相关。各种通用系统也可以与基于在此的示教一起使用。根据上面的描述，构造这类系统所要求的结构是显而易见的。此外，本发明也不针对任何特定编程语言。应当明白，可以利用各种编程语言实现在此描述的本发明的内容，并且上面对特定语言所做的描述是为了披露本发明的最佳实施方式。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本发明的实施例可以在没有这些具体细节的情况下实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
类似地，应当理解，为了精简本公开并帮助理解各个发明方面中的一个或多个，在上面对本发明的示例性实施例的描述中，本发明的各个特征有时被一起分组到单个实施例、图、或者对其的描述中。然而，并不应将该公开的方法解释成反映如下意图：即所要求保护的本发明要求比在每个权利要求中所明确记载的特征更多的特征。更确切地说，如下面的权利要求书所反映的那样，发明方面在于少于前面公开的单个实施例的所有特征。因此，遵循具体实施方式的权利要求书由此明确地并入该具体实施方式，其中每个权利要求本身都作为本发明的单独实施例。
本领域那些技术人员可以理解，可以对实施例中的设备中的模块进行自适应性地改变并且把它们设置在与该实施例不同的一个或多个设备中。可以把实施例中的模块或单元或组件组合成一个模块或单元或组件，以及此外可以把它们分成多个子模块或子单元或子组件。除了这样的特征和/或过程或者单元中的至少一些是相互排斥之外，可以采用任何组合对本说明书(包括伴随的权利要求、摘要和附图)中公开的所有特征以及如此公开的任何方法或者设备的所有过程或单元进行组合。除非另外明确陈述，本说明书(包括伴随的权利要求、摘要和附图)中公开的每个特征可以由提供相同、等同或相似目的的替代特征来代替。
此外，本领域的技术人员能够理解，尽管在此所述的一些实施例包括其它实施例中所包括的某些特征而不是其它特征，但是不同实施例的特征的组合意味着处于本发明的范围之内并且形成不同的实施例。例如，在下面的权利要求书中，所要求保护的实施例的任意之一都可以以任意的组合方式来使用。
本发明的各个部件实施例可以以硬件实现，或者以在一个或者多个处理器上运行的程序模块实现，或者以它们的组合实现。本领域的技术人员应当理解，可以在实践中使用微处理器或者数字信号处理器(DSP)来实现根据本发明实施例的通信业务释放的装置和系统中的一些或者全部部件的一些或者全部功能。本发明还可以实现为用于执行这里所描述的方法的一部分或者全部的设备或者装置程序(例如，计算机程序和计算机程序产品)。这样的实现本发明的程序可以存储在计算机可读介质上，或者可以具有一个或者多个信号的形式。这样的信号可以从因特网网站上下载得到，或者在载体信号上提供，或者以任何其他形式提供。
例如，图9示出了可以实现根据本发明的通信业务释放的方法的通信设备，例如RNC。该RNC传统上包括处理器910和以存储器920形式的计算机程序产品或者计算机可读介质。存储器920可以是诸如闪存、EEPROM(电可擦除可编程只读存储器)、EPROM、硬盘或者ROM之类的电子存储器。存储器920具有用于执行上述方法中的任何方法步骤的程序代码931的存储空间930。例如，用于程序代码的存储空间930可以包括分别用于实现上面的方法中的各种步骤的各个程序代码931。这些程序代码可以从一个或者多 个计算机程序产品中读出或者写入到这一个或者多个计算机程序产品中。这些计算机程序产品包括诸如硬盘，紧致盘(CD)、存储卡或者软盘之类的程序代码载体。这样的计算机程序产品通常为如参考图10所述的便携式或者固定存储单元。该存储单元可以具有与图9的电子设备中的存储器920类似布置的存储段、存储空间等。程序代码可以例如以适当形式进行压缩。通常，存储单元包括计算机可读代码931’，即可以由例如诸如910之类的处理器读取的代码，这些代码当由电子设备运行时，导致该电子设备执行上面所描述的方法中的各个步骤。
本文中所称的“一个实施例”、“实施例”或者“一个或者多个实施例”意味着，结合实施例描述的特定特征、结构或者特性包括在本发明的至少一个实施例中。此外，请注意，这里“在一个实施例中”的词语例子不一定全指同一个实施例。
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本发明的实施例可以在没有这些具体细节的情况下被实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。
应该注意的是上述实施例对本发明进行说明而不是对本发明进行限制，并且本领域技术人员在不脱离所附权利要求的范围的情况下可设计出替换实施例。在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本发明可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。

Claims (12)

  1. 一种通信业务释放的方法，包括：
    判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信今释放消息的响应消息；其中，所述预置定时器满足设定时间范围；
    若在所述预置定时器超时前未接收到终端返回的用于响应核心网发送的信今释放消息的响应消息，则生成与所述信今释放消息相匹配的模拟响应消息；并，
    将所述模拟响应消息发送至所述核心网。
  2. 如权利要求1所述的方法，其中，在所述判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信今释放消息的响应消息的步骤之前，所述方法还包括：
    接收核心网发送的信今释放消息；
    判断当前网络负荷是否超过预设门限值；
    若当前网络负荷超过预设门限值，直接向所述核心网返回所述模拟响应消息；
    若当前网络负荷未超过预设门限值，则将所述信今释放消息发送给终端；并，
    执行所述判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信今释放消息的响应消息的步骤。
  3. 如权利要求1所述的方法，其中，在所述判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信今释放消息的响应消息的步骤之后，所述方法还包括：
    若在预置定时器超时前接收到终端返回的用于响应核心网发送的信今释放消息的响应消息，则将所述响应消息发送给所述核心网；并，关闭所述预置定时器；
    若在所述预置定时器超时后接收到终端返回的用于响应核心网发送的信今释放消息的响应消息，则拦截所述响应消息，以阻止所述响应消息返回至核心网。
  4. 如权利要求1-3任一项所述的方法，其中，所述预置定时器包括：第一预置定时器和第二预置定时器；其中，所述第一预置定时器的时间范围满足第一设定时间范围，所述第二预置定时器的时间范围满足第二设定时间范围；
    所述若在所述预置定时器超时前未接收到终端返回的用于响应核心网发送的信今释放消息的响应消息，则生成与所述信今释放消息相匹配的模拟响应消息的步骤，包括：
    若在所述第一预置定时器超时前未接收到终端返回的用于响应核心网发送的DISCONNECT消息的响应消息RELEASE消息，则生成与所述DISCONNECT消息相匹配的第一模拟响应消息；或，
    若在所述第二预置定时器超时前未接收到终端返回的用于响应核心网发送的RELEASE消息的响应消息RELEASE COMPLETE消息，则生成与所述RELEASE消息相匹配的第二模拟响应消息。
  5. 如权利要求1所述的方法，其中，在所述判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信今释放消息的响应消息的步骤之前，所述方法还包括：
    确定所述预置定时器的初始配置满足启动所述预置定时器的初始条件；
    在所述将所述模拟响应消息发送至所述核心网步骤之后，所述方法还包括：
    接收所述核心网返回的对所述模拟响应消息的反馈消息，并阻止向所述终端发送所述核心网返回的所述反馈消息。
  6. 一种通信业务释放的装置，包括：
    第一判断模块，配置为判断在预置定时器的时间范围内是否接收到终端发送的用于响应核心网发送的信今释放消息的响应消息；其中，所述预置定时器满足设定时间范围；
    生成模块，配置为在所述预置定时器超时前未接收到终端返回的用于响应核心网发送的信今释放消息的响应消息时，生成与所述信今释放消息相匹 配的模拟响应消息；
    第一发送模块，配置为将所述模拟响应消息发送至所述核心网。
  7. 如权利要求6所述的装置，其中，所述装置还包括：
    第一接收模块，配置为在所述第一判断模块判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信今释放消息的响应消息之前，接收核心网发送的信今释放消息；
    第二判断模块，配置为判断当前网络负荷是否超过预设门限值；
    返回模块，配置为在当前网络负荷超过预设门限值时，直接向所述核心网返回所述模拟响应消息；
    第二发送模块，配置为在当前网络负荷未超过预设门限值，将所述信今释放消息发送给终端；并执行所述第一判断模块。
  8. 如权利要求6所述的装置，其中，所述装置还包括：
    第三发送模块，配置为在所述第一判断模块判断在预置定时器的时间范围内是否接收到终端返回的用于响应核心网发送的信今释放消息的响应消息之后，在预置定时器超时前接收到终端返回的用于响应核心网发送的信今释放消息的响应消息时，将所述响应消息发送给所述核心网；并，关闭所述预置定时器；
    拦截模块，配置为在所述预置定时器超时后接收到终端返回的用于响应核心网发送的信今释放消息的响应消息时，拦截所述响应消息，以阻止所述响应消息返回至核心网。
  9. 如权利要求6-8任一项所述的装置，其中，所述预置定时器包括：第一预置定时器和第二预置定时器；其中，所述第一预置定时器的时间范围满足第一设定时间范围，所述第二预置定时器的时间范围满足第二设定时间范围；
    所述生成模块包括：
    第一生成子模块，配置为在所述第一预置定时器超时前未接收到终端返回的用于响应核心网发送的DISCONNECT消息的响应消息RELEASE消息时，生成与所述DISCONNECT消息相匹配的第一模拟响应消息；
    第二生成子模块，配置为在所述第二预置定时器超时前未接收到终端返回的用于响应核心网发送的RELEASE消息的响应消息RELEASECOMPLETE消息时，生成与所述RELEASE消息相匹配的第二模拟响应消息。
  10. 如权利要求1所述的装置，其中，所述装置还包括：
    确定模块，配置为在所述第一判断模块判断在预置定时器的时间范围内是否接收到用于响应核心网发送的信今释放消息的响应消息之前，确定所述预置定时器的初始配置满足启动所述预置定时器的初始条件；
    第二接收模块，配置为在所述第一发送模块将所述模拟响应消息发送至所述核心网之后，接收所述核心网返回的对所述模拟响应消息的反馈消息，并阻止向所述终端发送所述核心网返回的所述反馈消息。
  11. 一种计算机程序，包括计算机可读代码，当所述计算机可读代码在通信设备上运行时，导致所述通信设备执行根据权利要求1-5中的任一个所述的通信业务释放的方法。
  12. 一种计算机可读介质，其中存储了如权利要求11所述的计算机程序。
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