CN111629384B - Call completion rate improving method and base station - Google Patents
Call completion rate improving method and base station Download PDFInfo
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- CN111629384B CN111629384B CN201910147300.5A CN201910147300A CN111629384B CN 111629384 B CN111629384 B CN 111629384B CN 201910147300 A CN201910147300 A CN 201910147300A CN 111629384 B CN111629384 B CN 111629384B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
- H04B17/327—Received signal code power [RSCP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0088—Scheduling hand-off measurements
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Abstract
The invention provides a call completing rate improving method and a base station. The method comprises the following steps: after receiving a VoLTE voice call request initiated by a terminal, receiving an eSRVCC A2 measurement report reported by the terminal; the eSRVCC A2 measurement report comprises a serving cell reference signal received power threshold measured by the terminal; comparing the serving cell reference signal received power threshold with a preset A2 threshold under the condition that the SIP180 message sent by the called terminal corresponding to the VoLTE voice call request is not received; when the serving cell reference signal received power threshold is smaller than the preset A2 threshold, comparing the serving cell reference signal received power threshold with a weak field call starting judgment threshold; and when the reference signal receiving power threshold of the service cell is smaller than the weak field call starting judgment threshold, switching the network connected with the terminal to a 2G network. The invention can ensure that the call of the user under the scene of covering the black hole can be connected, and can effectively improve the perception of the common network user.
Description
Technical Field
The present invention relates to the field of voice call technologies, and in particular, to a call completion rate improving method and a base station.
Background
The data service and the Voice over Long Term Evolution (Voice over Long Term Evolution) Voice service have a coverage difference of about 8 dB.
In a user in a weak field scene of an LTE (Long Term Evolution) network, when initiating a VoLTE Call each time, there is a high probability that a Single Radio Voice Call Continuity (bSRVCC) occurs before ringing, and since neither a terminal nor a network currently supports bSRVCC, a Call failure is caused, which affects a user Voice Call connection in the network, and a complaint event caused by poor use perception is easily caused.
The TD-LTE (Time Division Long term evolution )4G (the 4th Generation mobile communication technology, fourth Generation mobile communication technology) network has a large network scale at present, but there still exist many black holes in deep coverage, and as voice call service is deployed nationally on 4G bearers (VoLTE technology), such coverage black holes have become important factors affecting user call perception. How to solve the problem of voice call of the scene user, currently, the mobile requirement and the promotion deployment are the delayed switching function, and the specific execution flow is as follows:
1. an evolved Node B (eNB) immediately starts an eSRVCC (Enhanced Single Radio Voice Call Continuity) delayed handover timer when a Voice bearer is established by a QCI1(QoS Class Identifier);
2. before the timer is not overtime, caching an eRVCC A2 measurement report reported by UE (User Equipment) without processing;
3. after waiting for the timer to fail, the eNB finishes the ringing phase and issues an eSRVCC B2 measurement control message to the UE;
4. after receiving the measurement report of the eSRVCC B2 reported by the UE, reporting an eSRVCC handover preparation message to an MME (Mobility Management Entity), and switching a network to which the UE is connected to a 2G (2-Generation wireless telephone technology, second-Generation mobile communication technology specification) network through the eSRVCC.
According to the scheme, the connection and the time delay of the VOLTE of the weak user voice of the LTE network can be improved to a certain degree, but under a certain condition, because SIP (Session Initiation Protocol) messages in VOLTE call signaling interaction are large, under the condition that RSRP (Reference Signal Receiving Power) is poor (such as-122 dBm and below), the problem that the VOLTE cannot be called through due to failure of uplink data transmission and failure of SIP message demodulation exists, and the problem that the connection cannot be caused by prolonging the delay switching timer or increasing the retransmission times of HARQ (Hybrid-ARQ) cannot be fundamentally solved, and the problem that the call of a common user is not connected is caused.
Disclosure of Invention
The embodiment of the invention provides a call completion rate improving method and a base station, which aim to solve the problem that VoLTE can not be called due to failure in SIP message demodulation in the prior art, and the problem that the call of a common user can not be completed because a delay switching timer is prolonged or the HARQ retransmission times are improved can not be solved fundamentally.
In order to solve the above problem, an embodiment of the present invention discloses a method for improving call completing rate, which is applied to a base station, and includes: after receiving a VoLTE voice call request initiated by a terminal, receiving an eSRVCC A2 measurement report reported by the terminal; the eSRVCC A2 measurement report comprises a serving cell reference signal received power threshold measured by the terminal; comparing the serving cell reference signal received power threshold with a preset A2 threshold under the condition that the SIP180 message sent by the called terminal corresponding to the VoLTE voice call request is not received; when the serving cell reference signal received power threshold is smaller than the preset A2 threshold, comparing the serving cell reference signal received power threshold with a weak field call starting judgment threshold; and when the reference signal receiving power threshold of the service cell is smaller than the weak field call starting judgment threshold, switching the network connected with the terminal to a 2G network.
Preferably, after the step of comparing the serving cell reference signal received power threshold with a weak-field origination judgment threshold, the method further includes: and when the reference signal receiving power threshold of the service cell is smaller than the weak field starting call judgment threshold, entering a weak field starting call flow so as to switch the network connected with the terminal to a 2G network.
Preferably, the step of switching the network to which the terminal is connected to the 2G network includes: refusing the voice bearing service establishing process of the terminal; and issuing a network switching command to the terminal, and finishing the switching of the 2G network by the terminal according to the network switching command.
Preferably, after the step of comparing the serving cell reference signal received power threshold with a weak-field origination judgment threshold, the method further includes: when the reference signal received power threshold of the service cell is greater than or equal to the weak field call starting judgment threshold, caching the eSRVCC A2 measurement report, and starting a timer; and after the timer is overtime, migrating the network connected with the terminal to the 2G network.
Preferably, the step of migrating the network to which the terminal is connected to the 2G network includes: issuing an eSRVCC B2 measurement control message to the terminal; receiving an eSRVCC B2 measurement report reported by the terminal according to the eSRVCC B2 measurement control message; and reporting a handover preparation message to a mobility management entity according to the eSRVCC B2 measurement report, and migrating the network connected with the terminal to a 2G network through the eSRVCC.
In order to solve the above problem, an embodiment of the present invention further discloses a base station, including: the system comprises a measurement report receiving module, a measurement report sending module and a measurement report sending module, wherein the measurement report receiving module is used for receiving an eSRVCC A2 measurement report reported by a terminal after receiving a VoLTE voice call request initiated by the terminal; the eSRVCC A2 measurement report comprises a serving cell reference signal received power threshold measured by the terminal; a first comparing module, configured to compare the serving cell reference signal received power threshold with a preset a2 threshold when a SIP180 message sent by a called terminal corresponding to the VoLTE voice call request is not received; a second comparing module, configured to compare the serving cell reference signal received power threshold with a weak field origination determination threshold when the serving cell reference signal received power threshold is smaller than the preset a2 threshold; and the first network switching module is used for switching the network connected with the terminal to the 2G network when the reference signal receiving power threshold of the service cell is smaller than the weak field starting call judgment threshold.
Preferably, the method further comprises the following steps: and the weak field call starting process execution module is used for entering the weak field call starting process when the reference signal receiving power threshold of the service cell is smaller than the weak field call starting judgment threshold.
Preferably, the first network switching module includes: a voice bearer service rejection submodule, configured to reject the voice bearer service establishment procedure of the terminal; and the first network switching submodule is used for issuing a network switching command to the terminal, and the terminal completes the switching of the 2G network according to the network switching command.
Preferably, the method further comprises the following steps: a timer starting module, configured to cache the eSRVCC a2 measurement report and start a timer when the serving cell reference signal received power threshold is greater than or equal to the weak field origination determination threshold; and the second network switching module is used for migrating the network connected with the terminal to the 2G network after the timer is overtime.
Preferably, the second network switching module includes: the measurement and control message issuing sub-module is used for issuing an eSRVCC B2 measurement control message to the terminal; a measurement report receiving submodule, configured to receive an eSRVCC B2 measurement report reported by the terminal according to the eSRVCC B2 measurement control message; and a third network switching submodule, configured to report a switching preparation message to a mobility management entity according to the eSRVCC B2 measurement report, and migrate a network to which the terminal is connected to a 2G network through the eSRVCC.
Compared with the prior art, the embodiment of the invention has the following advantages:
the embodiment of the invention provides a call completing rate improving method and a base station, wherein an eSRCC A2 measurement report reported by a terminal is received after a VoLTE voice call request initiated by the terminal is received, the eSRCC A2 measurement report comprises a service cell reference signal receiving power threshold measured by the terminal, the service cell reference signal receiving power threshold is compared with a preset A2 threshold under the condition that an SIP180 message sent by a called terminal corresponding to the VoLTE voice call request is not received, the service cell reference signal receiving power threshold is compared with a weak field starting call judgment threshold when the service cell reference signal receiving power threshold is smaller than a preset A2 threshold, and a network connected with the terminal is switched to a 2G network when the service cell reference signal receiving power threshold is smaller than the weak field starting call judgment threshold. The embodiment of the invention is characterized in that a weak field call starting judgment threshold is configured in advance at the base station side, under the condition that user equipment is in a weak field, the voice call connection index of a common user under the weak field condition can be perfected, the judgment is carried out according to RSRP carried in the measurement of inter-system voice A2 reported by the user, the accurate control is carried out in a segmented mode, when the call connection index is larger than the newly-added weak field call starting threshold, a delayed switching process is carried out, when the call connection index is smaller than the newly-added weak field call starting threshold, the weak field call starting process is carried out, the call connection of the user under the scene covering a black hole is ensured, and the perception of the common user of the network can be effectively improved.
Drawings
Fig. 1 is a flowchart illustrating steps of a call completing rate increasing method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a call completing rate improving method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 4 shows a schematic structural diagram of a base station according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
Referring to fig. 1, a flowchart illustrating steps of a call completing rate improving method provided in an embodiment of the present invention is shown, where the call completing rate improving method may be applied to a base station, and specifically may include the following steps:
step 101: after receiving a VoLTE voice call request initiated by a terminal, receiving an eSRVCC A2 measurement report reported by the terminal; the eSRVCC a2 measurement report includes a serving cell reference signal received power threshold measured by the terminal.
In the embodiment of the present invention, the base station may be any one of a macro base station, a micro base station, a radio remote station, a repeater, an indoor distribution system, and the like, and specifically, the present invention may be determined according to an actual situation, which is not limited in this embodiment of the present invention.
The terminal refers to a terminal supporting a Voice over LTE (Voice over LTE, abbreviated as VoLTE) based multimedia subsystem and configured to initiate a Voice service, and may be a smart phone, a tablet computer, or the like.
The terminal in the embodiment of the invention is a terminal in the weak coverage area of the base station.
The eSRVCC a2 measurement report is an enhanced single wireless voice call continuity a2 measurement report, and the eSRVCC a2 measurement report reported by the terminal includes a serving cell Reference Signal Received Power (RSRP) threshold measured by the terminal.
After receiving the VoLTE voice call request initiated by the terminal, the base station may receive an eSRVCC a2 measurement report reported by the terminal, and perform step 102.
Step 102: and comparing the serving cell reference signal received power threshold with a preset A2 threshold under the condition that the SIP180 message sent by the called terminal corresponding to the VoLTE voice call request is not received.
The SIP180 message is the session initiation protocol 180 message, and the SIP180 message is a connection message returned by the called terminal corresponding to the VoLTE voice call request after receiving the VoLTE voice call request, that is, the called terminal has received the VoLTE voice call request and is about to establish a voice call with the calling terminal.
The technical scheme of the embodiment of the invention is a processing scheme executed before the base station does not receive the SIP180 message sent by the called terminal.
The preset a2 threshold is an a2 threshold of the serving cell reference signal received power (i.e., serving cell RSRP) preset at the base station side, the preset a2 threshold may be preset by a developer according to the actual situation of the base station, and a specific value of the preset a2 threshold may be determined according to the actual situation, which is not limited in the embodiment of the present invention.
Under the condition that the base station does not receive the SIP180 message sent by the called terminal corresponding to the VoLTE voice call request, the serving cell reference signal received power threshold contained in the eSRVCC a2 measurement report reported by the terminal may be compared with the preset a2 threshold.
After comparing the serving cell RSRP threshold with the preset a2 threshold, step 103 is performed.
Step 103: and when the serving cell reference signal received power threshold is greater than the preset A2 threshold, comparing the serving cell reference signal received power threshold with a weak field call starting judgment threshold.
In the embodiment of the present invention, the weak field origination determination threshold refers to a threshold for the weak field to reject QCI1 (i.e., voice bearer service), which is preset on the base station side, that is, to reject the terminal to establish the voice bearer service. The weak field call starting judgment threshold can be used as the judgment threshold of the SRVCC.
The weak field origination call judgment threshold may be preset by a developer according to experience and an actual scene, and a specific numerical value of the weak field origination call judgment threshold may be determined according to an actual situation, which is not limited in the embodiment of the present invention.
When the RSRP threshold of the serving cell reported by the terminal is greater than the preset a2 threshold, the RSRP threshold of the serving cell may be compared with the weak field call initiation determination threshold.
After comparing the serving cell RSRP threshold with the weak origination determination threshold, step 104 is performed.
Step 104: and when the inter-system voice measurement A2 threshold is smaller than the weak field call starting judgment threshold, switching the network connected with the terminal to a 2G network.
By the comparison result of the service cell RSRP threshold and the weak field call starting judgment threshold, the size relationship between the service cell RSRP threshold and the weak field call starting judgment threshold can be judged.
When the RSRP threshold of the serving cell is greater than or equal to the weak-field originating call judgment threshold, the network to which the terminal is connected may be switched according to the existing flow, and specifically, detailed description will be given in the following second embodiment, which is not described herein again.
When the RSRP threshold of the service cell is smaller than the weak field call starting judgment threshold, the network connected with the terminal can be directly switched to the 2G network, so that the problem of call inaccessibility can be avoided as much as possible.
The call completing rate improving method provided by the embodiment of the invention receives an eSRCC A2 measurement report reported by a terminal after receiving a VoLTE voice call request initiated by the terminal, wherein the eSRCC A2 measurement report comprises a serving cell reference signal receiving power threshold measured by the terminal, the serving cell reference signal receiving power threshold is compared with a preset A2 threshold under the condition that an SIP180 message sent by a called terminal corresponding to the VoLTE voice call request is not received, the serving cell reference signal receiving power threshold is compared with a weak field starting call judging threshold when the serving cell reference signal receiving power threshold is smaller than a preset A2 threshold, and a network connected with the terminal is switched to a 2G network when the serving cell reference signal receiving power threshold is smaller than the weak field starting call judging threshold. The embodiment of the invention is characterized in that a weak field call starting judgment threshold is configured in advance at the base station side, under the condition that user equipment is in a weak field, the voice call connection index of a common user under the weak field condition can be perfected, the judgment is carried out according to RSRP carried in the measurement of inter-system voice A2 reported by the user, the accurate control is carried out in a segmented mode, when the call connection index is larger than the newly-added weak field call starting threshold, a delayed switching process is carried out, when the call connection index is smaller than the newly-added weak field call starting threshold, the weak field call starting process is carried out, the call connection of the user under the scene covering a black hole is ensured, and the perception of the common user of the network can be effectively improved.
Example two
Referring to fig. 2, a flowchart illustrating steps of a call completing rate improving method provided in an embodiment of the present invention is shown, where the call completing rate improving method may be applied to a base station, and specifically may include the following steps:
step 201: after receiving a VoLTE voice call request initiated by a terminal, receiving an eSRVCC A2 measurement report reported by the terminal; the eSRVCC a2 measurement report includes a serving cell RSRP threshold.
In the embodiment of the present invention, the base station may be any one of a macro base station, a micro base station, a radio remote station, a repeater, an indoor distribution system, and the like, and specifically, the present invention may be determined according to an actual situation, which is not limited in this embodiment of the present invention.
The terminal refers to a terminal supporting a Voice over LTE (Voice over LTE, abbreviated as VoLTE) based multimedia subsystem and configured to initiate a Voice service, and may be a smart phone, a tablet computer, or the like.
The terminal in the embodiment of the invention is a terminal in the weak coverage area of the base station.
The eSRVCC a2 measurement report is an enhanced single wireless voice call continuity a2 measurement report, and the eSRVCC a2 measurement report reported by the terminal includes a serving cell RSRP threshold.
After receiving the VoLTE voice call request initiated by the terminal, the base station may receive an eSRVCC a2 measurement report reported by the terminal, and perform step 202.
Step 202: and comparing the serving cell reference signal received power threshold with a preset A2 threshold under the condition that the SIP180 message sent by the called terminal corresponding to the VoLTE voice call request is not received.
The SIP180 message is the session initiation protocol 180 message, and the SIP180 message is a connection message returned by the called terminal corresponding to the VoLTE voice call request after receiving the VoLTE voice call request, that is, the called terminal has received the VoLTE voice call request and is about to establish a voice call with the calling terminal.
The technical scheme of the embodiment of the invention is a processing scheme executed before the base station does not receive the SIP180 message sent by the called terminal.
The preset a2 threshold is an a2 threshold of reference signal received power preset at the base station side, the preset a2 threshold may be preset by a developer according to an actual situation of the base station, and a specific value of the preset a2 threshold may be determined according to the actual situation, which is not limited in the embodiment of the present invention.
Under the condition that the base station does not receive the SIP180 message sent by the called terminal corresponding to the VoLTE voice call request, the serving cell reference signal received power threshold contained in the eSRVCC a2 measurement report reported by the terminal may be compared with the preset a2 threshold.
After comparing the serving cell reference signal received power threshold with the preset a2 threshold, step 203 is performed.
Step 203: and when the serving cell reference signal received power threshold is greater than the preset A2 threshold, comparing the serving cell reference signal received power threshold with a weak field call starting judgment threshold.
In the embodiment of the present invention, the weak field origination determination threshold refers to a threshold for the weak field to reject QCI1 (i.e., voice bearer service), which is preset on the base station side, that is, to reject the terminal to establish the voice bearer. The weak field call starting judgment threshold can be used as the judgment threshold of the SRVCC.
The weak field origination call judgment threshold may be preset by a developer according to experience and an actual scene, and a specific numerical value of the weak field origination call judgment threshold may be determined according to an actual situation, which is not limited in the embodiment of the present invention.
When the serving cell reference signal received power threshold reported by the terminal is greater than the preset a2 threshold, the serving cell reference signal received power threshold may be compared with the weak field origination determination threshold.
After the serving cell reference signal received power threshold is compared with the weak origination determination threshold, step 204 is executed, or step 205 is executed.
Step 204: and when the reference signal receiving power threshold of the service cell is smaller than the weak field call starting judgment threshold, switching the network connected with the terminal to a 2G network.
By the comparison result of the service cell RSRP threshold and the weak field call starting judgment threshold, the size relationship between the service cell RSRP threshold and the weak field call starting judgment threshold can be judged.
When the RSRP threshold of the serving cell is greater than or equal to the weak field call initiation judgment threshold, the network to which the terminal is connected may be switched according to the existing flow.
And when the RSRP threshold of the service cell is smaller than the weak field call starting judgment threshold, entering a weak field call starting flow to switch the network connected with the terminal to the 2G network, specifically, directly switching the network connected with the terminal to the 2G network, thereby avoiding the problem of call incapability as much as possible.
The process of switching the network connected to the terminal to the 2G network when the RSRP threshold of the serving cell is smaller than the weak-field call initiation judgment threshold may be performed according to the following preferred embodiments.
In a preferred embodiment of the present invention, the step 204 may include:
substep A1: refusing the voice bearing service establishing process of the terminal;
substep A2: and issuing a network switching command to the terminal, and finishing the switching of the 2G network by the terminal according to the network switching command.
In the embodiment of the present invention, the voice Bearer service refers to a qos class identifier voice Bearer, and is used to transmit a voice Packet of a user in an EPS (Evolved Packet System) network, and send the voice Packet into an IMS (IP Multimedia Subsystem) network, where the voice Bearer service is completed by a dedicated Bearer (Default Bearer) that is dynamically and real-time initiated by a network side and establishes QCI ═ 1, and a signaling Bearer that is responsible for transmitting an SIP message for call establishment and is triggered by a VOLTE terminal to establish a Default Bearer (Default Bearer) that establishes QCI ═ 5 when the VOLTE terminal is powered on and attached.
And when the RSRP threshold of the service cell is smaller than the weak field call starting judgment threshold, refusing the voice bearing service establishment flow of the terminal, issuing a network switching command to the terminal by the base station, and completing the switching of the 2G network by the terminal according to the network switching command, namely switching the network connected with the terminal to the 2G terminal.
Step 205: and when the RSRP threshold of the service cell is more than or equal to the weak field call starting judgment threshold, caching the eSRVCC A2 measurement report and starting a timer.
In the embodiment of the present invention, the timer refers to a timer for indicating the eSRVCC delayed handover.
After the timer is started, it may be monitored in real time whether the timer has timed out, for example, the timer has timed out for 30s, and when the monitored time is waiting for 20s, it indicates that the timer has not timed out, and when the monitored time is 31s, it indicates that the timer has timed out.
It should be understood that the above examples are only examples for better understanding of the technical solutions of the embodiments of the present invention, and are not to be taken as the only limitation of the embodiments of the present invention.
When the RSRP threshold of the service cell is greater than or equal to the weak field call starting judgment threshold, the eSRCC B2 measurement control message is not immediately issued to the terminal, the eSRCC A2 measurement report reported by the terminal is cached, and the timer is started.
After the timer is started, step 206 is performed.
Step 206: and after the timer is overtime, migrating the network connected with the terminal to the 2G network.
After the timer expires, the network to which the terminal is connected may be migrated to the 2G network to complete the eSRVCC.
The above-mentioned process of starting the timer and migrating the network connected to the terminal to the 2G network after the timer expires may be as described in detail in the following preferred steps.
In a preferred embodiment of the present invention, the step 206 may include:
substep B1: issuing an eSRVCC B2 measurement control message to the terminal;
substep B2: receiving an eSRVCC B2 measurement report reported by the terminal according to the eSRVCC B2 measurement control message;
substep B3: and reporting a handover preparation message to a mobility management entity according to the eSRVCC B2 measurement report, and migrating the network connected with the terminal to a 2G network through the eSRVCC.
In the embodiment of the present invention, the eSRVCC B2 measurement control message refers to a message for instructing the terminal to return an eSRVCC B2 measurement report.
After the timer is overtime, the base station can issue an eSRVCC B2 measurement control message to the terminal, and the terminal reports an eSRVCC B2 measurement report to the base station according to the received eSRVCC B2 measurement control message.
When the terminal receives the eSRVCC B2 measurement report, indicating that the terminal is currently waiting for a voice call, that is, the terminal needs to further establish a voice call with a called terminal, the handover preparation message may be reported to the MME according to the eSRVCC B2 measurement report, and the network to which the terminal is connected is handed over to the 2G network through the eSRVCC, specifically, the MME may issue a network handover command to the terminal, and after the terminal receives the network handover command successfully, the network to which the terminal is connected is controlled to be handed over to the 2G network according to the network handover command.
The call completing rate improving method provided by the embodiment of the invention receives an eSRCC A2 measurement report reported by a terminal after receiving a VoLTE voice call request initiated by the terminal, wherein the eSRCC A2 measurement report comprises a serving cell reference signal receiving power threshold measured by the terminal, the serving cell reference signal receiving power threshold is compared with a preset A2 threshold under the condition that an SIP180 message sent by a called terminal corresponding to the VoLTE voice call request is not received, the serving cell reference signal receiving power threshold is compared with a weak field starting call judging threshold when the serving cell reference signal receiving power threshold is smaller than a preset A2 threshold, and a network connected with the terminal is switched to a 2G network when the serving cell reference signal receiving power threshold is smaller than the weak field starting call judging threshold. The embodiment of the invention is characterized in that a weak field call starting judgment threshold is configured in advance at the base station side, under the condition that user equipment is in a weak field, the voice call connection index of a common user under the weak field condition can be perfected, the judgment is carried out according to RSRP carried in the measurement of inter-system voice A2 reported by the user, the accurate control is carried out in a segmented mode, when the call connection index is larger than the newly-added weak field call starting threshold, a delayed switching process is carried out, when the call connection index is smaller than the newly-added weak field call starting threshold, the weak field call starting process is carried out, the call connection of the user under the scene covering a black hole is ensured, and the perception of the common user of the network can be effectively improved.
EXAMPLE III
Referring to fig. 3, a schematic structural diagram of a base station provided in an embodiment of the present invention is shown, which may specifically include:
a measurement report receiving module 301, configured to receive an eSRVCC a2 measurement report reported by a terminal after receiving a VoLTE voice call request initiated by the terminal; the eSRVCC A2 measurement report comprises a serving cell reference signal received power threshold measured by the terminal; a first comparing module 302, configured to compare the serving cell reference signal received power threshold with a preset a2 threshold when a SIP180 message sent by a called terminal corresponding to the VoLTE voice call request is not received; a second comparing module 303, configured to compare the serving cell reference signal received power threshold with a weak field origination determination threshold when the serving cell reference signal received power threshold is greater than the preset a2 threshold; a first network switching module 304, configured to switch a network connected to the terminal to a 2G network when the serving cell reference signal received power threshold is smaller than the weak field originating call judgment threshold.
The base station provided by the embodiment of the invention receives an eSRCC A2 measurement report reported by a terminal after receiving a VoLTE voice call request initiated by the terminal, wherein the eSRCC A2 measurement report comprises a service cell reference signal receiving power threshold measured by the terminal, compares the service cell reference signal receiving power threshold with a preset A2 threshold under the condition that an SIP180 message sent by a called terminal corresponding to the VoLTE voice call request is not received, compares the service cell reference signal receiving power threshold with a weak field starting call judgment threshold when the service cell reference signal receiving power threshold is smaller than a preset A2 threshold, and switches a network connected with the terminal to a 2G network when the service cell reference signal receiving power threshold is smaller than the weak field starting call judgment threshold. The embodiment of the invention is characterized in that a weak field call starting judgment threshold is configured in advance at the base station side, under the condition that user equipment is in a weak field, the voice call connection index of a common user under the weak field condition can be perfected, the judgment is carried out according to RSRP carried in the measurement of inter-system voice A2 reported by the user, the accurate control is carried out in a segmented mode, when the call connection index is larger than the newly-added weak field call starting threshold, a delayed switching process is carried out, when the call connection index is smaller than the newly-added weak field call starting threshold, the weak field call starting process is carried out, the call connection of the user under the scene covering a black hole is ensured, and the perception of the common user of the network can be effectively improved.
Example four
Referring to fig. 4, a schematic structural diagram of a base station provided in an embodiment of the present invention is shown, which may specifically include:
a measurement report receiving module 401, configured to receive an eSRVCC a2 measurement report reported by a terminal after receiving a VoLTE voice call request initiated by the terminal; the eSRVCC A2 measurement report comprises a serving cell reference signal received power threshold measured by the terminal; a first comparing module 402, configured to compare the serving cell reference signal received power threshold with a preset a2 threshold when a SIP180 message sent by a called terminal corresponding to the VoLTE voice call request is not received; a second comparing module 403, configured to compare the serving cell reference signal received power threshold with a weak field origination determination threshold when the serving cell reference signal received power threshold is greater than the preset a2 threshold; a first network switching module 404, configured to switch a network to which the terminal is connected to a 2G network when the serving cell reference signal received power threshold is smaller than the weak field origination determination threshold; a timer starting module 405, configured to cache the eSRVCC a2 measurement report and start a timer when the serving cell reference signal received power threshold is greater than or equal to the weak field origination determination threshold; a second network switching module 406, configured to migrate the network to which the terminal is connected to the 2G network after the timer expires.
Preferably, the base station further includes: further comprising: and the weak field call starting process execution module is used for entering the weak field call starting process when the reference signal receiving power threshold of the service cell is smaller than the weak field call starting judgment threshold.
Preferably, the first network switching module 404 includes: a voice bearing service rejecting submodule, configured to reject the submodule, and configured to reject the voice bearing service establishment flow of the terminal; and the first network switching submodule is used for issuing a network switching command to the terminal, and the terminal completes the switching of the 2G network according to the network switching command.
Preferably, the second network switching module 406 includes: the measurement and control message issuing sub-module is used for issuing an eSRVCC B2 measurement control message to the terminal; a measurement report receiving submodule, configured to receive an eSRVCC B2 measurement report reported by the terminal according to the second eSRVCC B2 measurement control message; and a third network switching submodule, configured to report a switching preparation message to a mobility management entity according to the eSRVCC B2 measurement report, and migrate a network to which the terminal is connected to a 2G network through the eSRVCC.
The base station provided by the embodiment of the invention receives an eSRCC A2 measurement report reported by a terminal after receiving a VoLTE voice call request initiated by the terminal, wherein the eSRCC A2 measurement report comprises a service cell reference signal receiving power threshold measured by the terminal, compares the service cell reference signal receiving power threshold with a preset A2 threshold under the condition that an SIP180 message sent by a called terminal corresponding to the VoLTE voice call request is not received, compares the service cell reference signal receiving power threshold with a weak field starting call judgment threshold when the service cell reference signal receiving power threshold is smaller than a preset A2 threshold, and switches a network connected with the terminal to a 2G network when the service cell reference signal receiving power threshold is smaller than the weak field starting call judgment threshold. The embodiment of the invention is characterized in that a weak field call starting judgment threshold is configured in advance at the base station side, under the condition that user equipment is in a weak field, the voice call connection index of a common user under the weak field condition can be perfected, the judgment is carried out according to RSRP carried in the measurement of inter-system voice A2 reported by the user, the accurate control is carried out in a segmented mode, when the call connection index is larger than the newly-added weak field call starting threshold, a delayed switching process is carried out, when the call connection index is smaller than the newly-added weak field call starting threshold, the weak field call starting process is carried out, the call connection of the user under the scene covering a black hole is ensured, and the perception of the common user of the network can be effectively improved.
While specific reference may have been made to the above-described method embodiments for simplicity of explanation, the various acts illustrated in the various blocks, for example, may be performed in any order, or performed in any combination, as those skilled in the art will appreciate that the present invention is not limited by the illustrated ordering of acts, as some steps may occur in other orders or concurrently, in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The method for improving call completion rate and the base station provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A call completing rate improving method is applied to a base station and is characterized by comprising the following steps:
after receiving a VoLTE voice call request initiated by a terminal, receiving an eSRVCC A2 measurement report reported by the terminal; the eSRVCC A2 measurement report comprises a serving cell reference signal received power threshold measured by the terminal;
comparing the serving cell reference signal received power threshold with a preset A2 threshold under the condition that the SIP180 message sent by the called terminal corresponding to the VoLTE voice call request is not received;
when the serving cell reference signal received power threshold is greater than the preset A2 threshold, comparing the serving cell reference signal received power threshold with a weak field call starting judgment threshold;
and when the reference signal receiving power threshold of the service cell is smaller than the weak field call starting judgment threshold, switching the network connected with the terminal to a 2G network.
2. The method of claim 1, wherein after the step of comparing the serving cell reference signal received power threshold to a weak-field origination determination threshold, further comprising:
and when the reference signal receiving power threshold of the service cell is smaller than the weak field starting call judgment threshold, entering a weak field starting call flow so as to switch the network connected with the terminal to a 2G network.
3. The method according to claim 1, wherein the step of switching the network to which the terminal is connected to the 2G network comprises:
refusing the voice bearing service establishing process of the terminal;
and issuing a network switching command to the terminal, and finishing the switching of the 2G network by the terminal according to the network switching command.
4. The method of claim 1, wherein after the step of comparing the serving cell reference signal received power threshold to a weak-field origination determination threshold, further comprising:
when the reference signal received power threshold of the service cell is greater than or equal to the weak field call starting judgment threshold, caching the eSRVCC A2 measurement report, and starting a timer;
and after the timer is overtime, migrating the network connected with the terminal to the 2G network.
5. The method according to claim 4, wherein the step of migrating the network to which the terminal is connected to the 2G network comprises:
issuing an eSRVCC B2 measurement control message to the terminal;
receiving an eSRVCC B2 measurement report reported by the terminal according to the eSRVCC B2 measurement control message;
and reporting a handover preparation message to a mobility management entity according to the eSRVCC B2 measurement report, and migrating the network connected with the terminal to a 2G network through the eSRVCC.
6. A base station, comprising:
the system comprises a measurement report receiving module, a measurement report sending module and a measurement report sending module, wherein the measurement report receiving module is used for receiving an eSRVCC A2 measurement report reported by a terminal after receiving a VoLTE voice call request initiated by the terminal; the eSRVCC A2 measurement report comprises a serving cell reference signal received power threshold measured by the terminal;
a first comparing module, configured to compare the serving cell reference signal received power threshold with a preset a2 threshold when a SIP180 message sent by a called terminal corresponding to the VoLTE voice call request is not received;
a second comparing module, configured to compare the serving cell reference signal received power threshold with a weak field origination determination threshold when the serving cell reference signal received power threshold is greater than the preset a2 threshold;
and the first network switching module is used for switching the network connected with the terminal to the 2G network when the reference signal receiving power threshold of the service cell is smaller than the weak field starting call judgment threshold.
7. The base station of claim 6, further comprising:
and the weak field call starting process execution module is used for entering the weak field call starting process when the reference signal receiving power threshold of the service cell is smaller than the weak field call starting judgment threshold.
8. The base station of claim 6, wherein the first network switching module comprises:
a voice bearer service rejection submodule, configured to reject the voice bearer service establishment procedure of the terminal;
and the first network switching submodule is used for issuing a network switching command to the terminal, and the terminal completes the switching of the 2G network according to the network switching command.
9. The base station of claim 6, further comprising:
a timer starting module, configured to cache the eSRVCC a2 measurement report and start a timer when the serving cell reference signal received power threshold is greater than or equal to the weak field origination determination threshold;
and the second network switching module is used for migrating the network connected with the terminal to the 2G network after the timer is overtime.
10. The base station of claim 9, wherein the second network switching module comprises:
the measurement and control message issuing sub-module is used for issuing an eSRVCC B2 measurement control message to the terminal;
a measurement report receiving submodule, configured to receive an eSRVCC B2 measurement report reported by the terminal according to the eSRVCC B2 measurement control message;
and a third network switching submodule, configured to report a switching preparation message to a mobility management entity according to the eSRVCC B2 measurement report, and migrate a network to which the terminal is connected to a 2G network through the eSRVCC.
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