WO2018054385A1 - Procédé et dispositif de commutation de réseau - Google Patents

Procédé et dispositif de commutation de réseau Download PDF

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Publication number
WO2018054385A1
WO2018054385A1 PCT/CN2017/103537 CN2017103537W WO2018054385A1 WO 2018054385 A1 WO2018054385 A1 WO 2018054385A1 CN 2017103537 W CN2017103537 W CN 2017103537W WO 2018054385 A1 WO2018054385 A1 WO 2018054385A1
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Prior art keywords
service
quality
call
wireless network
preset
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PCT/CN2017/103537
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English (en)
Chinese (zh)
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时九
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中兴通讯股份有限公司
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Publication of WO2018054385A1 publication Critical patent/WO2018054385A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1446—Reselecting a network or an air interface over a different radio air interface technology wherein at least one of the networks is unlicensed

Definitions

  • the present application relates to the field of communications, for example, to a method and apparatus for switching networks.
  • IP-based data telephony (such as VOLTE, VOWIFI, VOIP telephony) is getting hotter and hotter, and many IP bearer networks cannot provide dedicated bearer channels or proprietary traffic channels like LTE or WCDMA wireless communication networks to provide effective quality of service (Quality of Server, Qos) protection.
  • Qos Quality of Server
  • embodiments of the present disclosure are directed to providing a method and apparatus for switching a network, which can implement network switching based on quality of service of a call service.
  • an embodiment of the present disclosure provides a method for switching a network, where the method includes:
  • the terminal When the terminal performs the IP-based call service through the first wireless network, detecting a quality of service parameter for performing the call service; wherein the first wireless network cannot allocate a dedicated bearer channel; and the service quality parameter of the call service is Matching with a preset quality of service switching policy; when the quality of service parameter of the call service matches the preset quality of service switching policy, the first wireless network switches to the second wireless network, based on the The second wireless network continues the call service.
  • the method further includes: setting the preset quality of service switching policy according to the quality of service parameter.
  • the preset quality of service switching policy includes at least one of the following:
  • the call bandwidth is less than the preset call bandwidth threshold
  • the bit error rate is greater than a preset error rate threshold
  • the delay is greater than a preset delay threshold
  • JITTER jitter is greater than the preset JITTER jitter threshold.
  • the method before switching to the second wireless network, the method further includes:
  • the first wireless network switches to the second wireless network.
  • the quality of service parameter includes at least one of the following: a call bandwidth, a bit error rate, Delay, JITTER jitter.
  • an embodiment of the present disclosure further provides an apparatus for switching a network, where the apparatus includes: a detecting unit, a matching unit, and a switching unit; wherein the detecting unit is configured to be based on the terminal through the first wireless network. Detecting a quality of service parameter for performing the call service, wherein the first wireless network cannot allocate a dedicated bearer channel; the matching unit is configured to set a quality of service parameter of the call service The preset quality of service switching policy is matched; the switching unit is configured to switch from the first wireless network to the first when the quality of service parameter of the call service matches the preset quality of service switching policy And the second wireless network continues to perform the call service based on the second wireless network.
  • the apparatus further includes: a setting unit configured to set the preset quality of service switching policy according to the quality of service parameter.
  • the preset quality of service switching policy includes at least one of the following:
  • the call bandwidth is less than the preset call bandwidth threshold
  • the bit error rate is greater than a preset error rate threshold
  • the delay is greater than a preset delay threshold
  • JITTER jitter is greater than the preset JITTER jitter threshold.
  • the device further includes: an adjusting unit, configured to: before switching to the second wireless network, acquire an encoding format corresponding to the call service, and adjust a corresponding encoding rate to obtain an adjusted call service;
  • the quality of service parameter includes at least one of the following: a call bandwidth, a bit error rate, a delay, and a JITTER jitter.
  • Embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions arranged to perform the above method.
  • An embodiment of the present disclosure further provides an electronic device, including:
  • At least one processor At least one processor
  • the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform the method described above.
  • a method and apparatus for switching a network includes: detecting, when a terminal performs an IP-based call service through a first wireless network, a quality of service parameter for performing the call service; A network corresponding to the wireless network cannot allocate a dedicated bearer channel; the quality of service parameter of the call service is matched with a preset quality of service switching policy; and the quality of service parameter of the call service and the preset quality of service
  • the handover policy matches, the first wireless network switches to the second wireless network, and the call service is continued based on the second wireless network.
  • the QoS parameter of the call service when the QoS parameter of the call service meets the preset QoS switch policy, the first wireless network that is currently performing the call service is switched to On the second wireless network, the call service is continued on the second wireless network, and the service quality of the current call service is ensured and the call experience of the user is improved while the call service is not interrupted.
  • FIG. 1 is a schematic flowchart of a method for switching a network according to Embodiment 1 of the present disclosure
  • FIG. 2 is a schematic flowchart of a method for switching a network according to Embodiment 3 of the present disclosure
  • FIG. 3 is a schematic diagram of relationship between bandwidth and coding rate according to Embodiment 3 of the present disclosure
  • FIG. 4 is a schematic diagram showing a relationship between a bit error rate and a coding rate according to Embodiment 3 of the present disclosure
  • FIG. 5 is a schematic structural diagram of an apparatus for switching a network according to Embodiment 4 of the present disclosure
  • FIG. 6 is a schematic structural diagram of another apparatus for switching a network according to Embodiment 4 of the present disclosure.
  • FIG. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
  • Embodiment 1 of the present disclosure provides a method for switching a network. As shown in FIG. 1, the method includes:
  • the first wireless network used by the terminal cannot allocate a dedicated bearer channel for the currently performed communication service, such as a WLAN network and global microwave access.
  • a dedicated bearer channel for the currently performed communication service, such as a WLAN network and global microwave access.
  • WINMAX World Interoperability for Microwave Access
  • HRPD High Rate Packet Data
  • the wireless network cannot provide air interface service quality assurance for the terminal.
  • the dedicated bearer channel may also be referred to as a dedicated traffic channel, and is a channel that guarantees delay and rate requirements of voice, video, etc. through dedicated resources.
  • the terminal when the terminal performs the VoWifi-based communication service, the terminal accesses the core network of the operator through the Wifi network, and the core network of the operator cannot set the air interface of the WiFi network, so that the WiFi network cannot allocate a dedicated bearer channel to the terminal. Or a proprietary traffic channel, thus failing to provide the QoS guarantees required for the service.
  • the first wireless network is an example of a wireless network that is not controlled by its own core network.
  • the SIM card 1 When the SIM card 2 is used, when the user conducts a call service through the SIM card 2 via the network of the operator 1, the terminal communicates with the network of the operator 1 through the SIM card 2, and when the air interface resource is insufficient, the network of the operator 1
  • the core network cannot allocate the air interface resources for the SIM card 2, and the network corresponding to the current wireless network cannot allocate a dedicated bearer channel for the QoS guarantee of the communication service.
  • the call service may include a voice call service, a video call service, and the like, which requires a low bit error rate and a low delay, and the service quality is relatively high.
  • the call service may result in The quality of the current call service is seriously affected.
  • the communication connection between the terminals may exist, but the voice, image, etc. of the call are distorted and cannot be received. At this time, the user's call experience is not good.
  • the quality of service parameter can reflect whether the current call service is normal.
  • the network environment in which the terminal conducts the call service changes, for example, the terminal A that performs the call service is added to the network corresponding to the first wireless network, and at this time, the terminal that is performing the call service is used after the terminal A joins.
  • the bandwidth is affected, which in turn causes the QoS of the ongoing call service of the terminal to be affected. For example, when the user moves back and forth while performing the call service, the distance between the terminal and the signal source changes, and the received signal of the first wireless network is received.
  • the strength is affected, which in turn affects the QoS of the ongoing call service.
  • the quality of service parameter includes at least one of the following: a call bandwidth, a bit error rate, a delay, a JITTER jitter, and the like.
  • the quality of service parameter is a related parameter or feature that can be used to characterize the quality of service of the service, and is not limited to the above-mentioned quality of service parameter.
  • the method further includes: setting the preset quality of service switching policy according to the quality of service parameter.
  • the preset quality of service call policy includes one or more rules for determining that the quality of service parameter does not satisfy the quality of the call service.
  • the preset QoS switching policy is set according to the QoS parameter, and the preset QoS switching policy includes at least one of the following: the call bandwidth is less than a preset call bandwidth threshold; the error rate is greater than the preset error code. Rate threshold; the delay is greater than the preset delay threshold; JITTER jitter is greater than the preset JITTER jitter threshold.
  • the QoS switching policy may include one or more rules according to the foregoing, and determine, according to the number of rules included in the QoS switching policy, whether the corresponding QoS parameter satisfies the rule included in the QoS switching policy.
  • the call bandwidth threshold, the error rate threshold, the delay threshold, and the JITTER jitter threshold may be set according to the user's requirements for quality of service.
  • the QoS parameter matches the preset QoS switch policy. It is necessary to switch the network in which the terminal communicates.
  • the QoS parameter does not match the preset QoS switching policy, and one or more parameters in the QoS parameter do not satisfy the corresponding rule; when a parameter satisfies the corresponding rule, the QoS parameter and the preset service may be determined. If the quality switching policy is matched, the service quality parameter does not match the preset quality of service switching policy when all the quality of service parameters do not meet the corresponding rules, indicating that the network that does not need to communicate with the terminal needs to be switched.
  • the terminal When the quality of service parameters of the call service match the quality of service switching policy, the terminal performs the The switching of the network is switched from the current first wireless network to the second wireless network, wherein the type of the second wireless network is not limited, and may be a network with air interface service quality guarantee, or may have no air interface service quality guarantee.
  • the internet After switching to the second wireless network, the terminal maintains the call service established through the first wireless network through the second wireless network.
  • the method further includes: acquiring an encoding format corresponding to the call service, adjusting an encoding rate of the encoding format to obtain an adjusted call service; and detecting the adjusted call service a quality of service parameter; if it is determined that the quality of service parameter of the adjusted call service matches the quality of service switching policy, the first wireless network switches to the second wireless network.
  • the service quality of the current call service is determined to be degraded.
  • the coding format corresponding to the call service is obtained, where the coding format corresponding to the call service is when the call service is performed.
  • the coding type of the speech coding or video coding adjusting the coding rate to improve the quality of service of the call service, taking the current call service as a voice call as an example, and obtaining a voice call when the quality of the current voice call matches the quality of service switching policy.
  • the speech coding format used, and the coding rate of the speech coding is adjusted according to the quality of service parameter, and the service parameters of the call service after the coding rate adjustment are obtained.
  • the voice coding type may include, for example, an AMR-WB adaptive wideband speech coding and the like.
  • the bandwidth is automatically adjusted to the coding rate; the speech coding rate is automatically reduced according to the packet error rate/loss rate to improve the bit error rate/packet loss rate of the speech frame.
  • the service parameter at the time is matched with the quality of service switching policy, and the service quality parameter of the adjusted call service is matched with the quality of service switching policy. Switching the first wireless network to the second wireless The internet.
  • the network that the terminal performs communication is not directly switched, but the coding rate of the communication service of the terminal is adjusted in the current first wireless network,
  • the terminal itself adjusts to determine that the adjusted quality of service parameters cannot meet the quality of service before switching the network.
  • the first wireless network is a WLAN and the second wireless network is EUTRAN
  • the handover of WLAN->EUTRAN needs to be satisfied.
  • the source WLAN cell satisfies:
  • the channel utilization of the WLAN is less than the threshold
  • the downlink bandwidth of the WLAN backhaul line is less than the threshold
  • the uplink bandwidth of the WLAN backhaul line is less than the threshold
  • the RSSI of the WLAN is less than the threshold
  • the network when the terminal meets the above conditions and the service parameter satisfies the quality of service switching policy, the network still performs the handover of the network, so that the terminal performs the call according to the terminal on the basis of the resident condition of the relevant protocol.
  • the quality of service determines whether to switch, so as to provide service guarantee for the terminal to conduct call services.
  • the first wireless network is a WIFI
  • the second wireless network is a method for the EUTRAN to switch the network provided by the embodiment of the present disclosure.
  • the source WLAN cell satisfies:
  • the channel utilization of the WLAN is less than the threshold, or the downlink bandwidth of the WLAN backhaul line is less than the threshold, or the uplink bandwidth of the WLAN backhaul line is less than the threshold, or the RSSI of the WLAN is less than the threshold.
  • the target EUTRAN cell satisfies:
  • the RSRP measurement is above a threshold and the RSRQ value is above a threshold.
  • the channel utilization rate is also up to standard, and the uplink and downlink bandwidths of the backhaul line are also good, the conditions of the above handover are not met, and each parameter satisfies the camping threshold, and satisfies the WLAN network.
  • the ThreshChUtil WLAN, the ThreshBackhRateDL WLAN, the ThreshBackhRateUL WLAN, and the ThreshBeaconRSSI WLAN are respectively the channel utilization, the backhaul bandwidth of the WLAN, the backhaul bandwidth of the WLAN, and the resident threshold of the RSSI of the WLAN.
  • the terminal When the terminal talks on the WLAN, it simultaneously monitors the Qos related parameters of the wireless communication system, such as call bandwidth, bit error rate, delay, JITTER jitter and the like. If the terminal uses the adaptive coding, such as AMR-WB, the terminal can adaptively reduce/increase the coding rate according to the change of the QoS parameters. When the adaptive coding rate is reduced to a minimum, although the WLAN still meets the dwell threshold, However, when the call QoS guarantee cannot be satisfied, the terminal initiates a QoS-guaranteed handover algorithm, a WLAN handover from the VOWIFI service without air interface QoS guarantee, and an EUTRAN with EUTRAN VOLTE QoS guarantee.
  • the adaptive coding such as AMR-WB
  • the terminal needs to continue to make calls through VOWIFI according to the protocol, and there is a better EUTRAN network around. and use.
  • the quality of the call caused by the user is not good due to the voice delay and the packet loss rate during the actual call through the terminal, the current network that performs the call is switched to another network. Continue to talk in the middle.
  • the method for switching the network provided by the embodiment of the present disclosure is described in the application scenario. As shown in FIG. 2, the method includes:
  • the terminal registers with the first wireless network.
  • the mobile terminal is powered on and registered to the first wireless network.
  • the first wireless network is a network without QoS guarantee, such as a WLAN network.
  • the terminal establishes a VOWIFI voice call.
  • the terminal establishes a VOWIFI voice call with another terminal, and determines a voice coding type, such as AMR-WB adaptive wideband voice coding, through network negotiation.
  • a voice coding type such as AMR-WB adaptive wideband voice coding
  • the quality of service parameters during the voice call of the terminal including call bandwidth, bit error rate, delay, and JITTER jitter.
  • the bandwidth is smaller than the call bandwidth threshold
  • the service quality parameter after the network environment change is determined to match the quality of service switching policy.
  • the terminal After adjusting the voice coding rate, the terminal obtains the QoS parameter after adjusting the coding rate, and matches the QoS parameter after adjusting the coding rate with the QoS switching policy. When determining that the adjusted QoS parameter still fails to meet the Qos of the voice call. Packet loss/error rate and delay in data transmission, even if the channel utilization, RSSI, and uplink and downlink bandwidth of the WLAN satisfy the WLAN camping condition, the terminal initiates network switching.
  • the network search based on QoS guarantee is started, and the second wireless network is searched, for example: EUTRN LTE.
  • the terminal After the terminal initiates the network search, if the searched second wireless network satisfies the camping threshold of the LTE network, and both the RSRP and the RSRQ satisfy the condition, the S208 is performed to switch to the second wireless network, and the VOWIFI is switched to the VOLTE. The wireless network continues to hold calls. If the searched second wireless network still does not meet the handover threshold specified by the protocol, then the S209 call is performed on the first wireless network and the search continues.
  • an embodiment of the present disclosure further provides an apparatus for switching a network.
  • the device includes: a detecting unit 501, a matching unit 502, and a switching unit 503;
  • the detecting unit 501 is configured to detect a quality of service parameter for performing the call service when the terminal performs an IP-based call service by using the first wireless network, where the first wireless network cannot allocate a dedicated bearer channel;
  • the matching unit 502 is configured to match the quality of service parameter of the call service with a preset quality of service switching policy
  • the switching unit 503 is configured to switch from the first wireless network to the second wireless network when the quality of service parameter of the call service matches the preset quality of service switching policy, based on the second wireless network The call service continues.
  • the apparatus further includes: a setting unit 504 configured to set the preset quality of service switching policy according to the quality of service parameter.
  • the preset service quality switching policy includes at least one of the following: the call bandwidth is less than a preset call bandwidth threshold; the error rate is greater than a preset error rate threshold; the delay is greater than a preset delay threshold; JITTER Jitter is greater than the preset JITTER jitter threshold.
  • the apparatus further includes an adjusting unit 505, configured to: before switching to the second wireless network, acquire an encoding format corresponding to the call service, and adjust a corresponding encoding rate to obtain an adjusted call service. Detecting a quality of service parameter of the adjusted call service; and determining that the quality of service parameter of the adjusted call service matches the quality of service switching policy, switching from the first wireless network to the first Two wireless networks.
  • the QoS parameter includes at least one of the following: a call bandwidth, a bit error rate, a delay, and a JITTER jitter.
  • an apparatus for switching a network may be implemented by a processor and a memory, wherein the memory has computer executable instructions; the processor is configured to execute the following according to the computer executable instructions;
  • the service quality parameter of the call service is detected when the terminal performs the IP-based call service by using the first wireless network; wherein the first wireless network cannot allocate a dedicated bearer channel;
  • the quality parameter is matched with the preset quality of service switching policy; when the quality of service parameter of the call service matches the preset quality of service switching policy, the first wireless network is switched to the second wireless network, based on The second wireless network continues the call service.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • an embodiment of the present disclosure also provides a computer readable storage medium storing computer executable instructions arranged to perform the method of any of the above embodiments.
  • the computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.
  • the embodiment of the present disclosure further provides a schematic structural diagram of an electronic device.
  • the electronic device includes:
  • At least one processor 70 which is exemplified by a processor 70 in FIG. 7; and a memory 71, may further include a communication interface 72 and a bus 73.
  • the processor 70, the communication interface 72, and the memory 71 can complete communication with each other through the bus 73.
  • Communication interface 72 can be used for information transfer.
  • Processor 70 can invoke logic instructions in memory 71 to perform the methods of the above-described embodiments.
  • logic instructions in the memory 71 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.
  • the memory 71 is a computer readable storage medium and can be used for storing software programs and computers. Executing a program, a program instruction/module corresponding to the method in the embodiment of the present disclosure.
  • the processor 70 executes the function application and the data processing by executing the software program, the instruction and the module stored in the memory 71, that is, the method of switching the network in the above method embodiment.
  • the memory 71 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to usage of the terminal device, and the like. Further, the memory 71 may include a high speed random access memory, and may also include a nonvolatile memory.
  • the technical solution of the embodiments of the present disclosure may be embodied in the form of a software product stored in a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network) The device or the like) performs all or part of the steps of the method described in the embodiments of the present disclosure.
  • the foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like.
  • the method and apparatus for switching networks disclosed in the present application can implement network switching based on quality of service of a call service.

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Abstract

L'invention concerne un procédé de commutation de réseau. Le procédé comporte les étapes consistant: lorsqu'un terminal effectue un service d'appel basé sur IP au moyen d'un premier réseau sans fil, à détecter un paramètre de qualité de service du service d'appel, le premier réseau sans fil n'étant pas en mesure d'attribuer un canal de support spécifique; à mettre en correspondance le paramètre de qualité de service du service d'appel avec une politique prédéfinie de commutation de qualité de service; et si le paramètre de qualité de service du service d'appel concorde avec la politique prédéfinie de commutation de qualité de service, à passer du premier réseau sans fil à un deuxième réseau sans fil et à poursuivre le service d'appel sur la base du deuxième réseau sans fil. L'invention concerne également un dispositif de commutation de réseau.
PCT/CN2017/103537 2016-09-26 2017-09-26 Procédé et dispositif de commutation de réseau WO2018054385A1 (fr)

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CN111586781A (zh) * 2020-05-22 2020-08-25 维沃移动通信有限公司 通话方法及装置
CN114641042A (zh) * 2020-12-15 2022-06-17 华为技术有限公司 一种网络切换方法及装置
CN113904980B (zh) * 2021-09-30 2023-07-18 北京东土科技股份有限公司 一种信道切换方法、装置、交换机及存储介质
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CN105791165A (zh) * 2016-02-29 2016-07-20 宇龙计算机通信科技(深圳)有限公司 一种业务承载方法、通信终端、控制网元s-cscf以及系统
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CN112752342A (zh) * 2019-10-29 2021-05-04 中国电信股份有限公司 网络资源的调度方法、装置、基站和计算机可读存储介质
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