CN110234141A - Keep the successional method, apparatus of voice communication, equipment and medium - Google Patents
Keep the successional method, apparatus of voice communication, equipment and medium Download PDFInfo
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- CN110234141A CN110234141A CN201810181890.9A CN201810181890A CN110234141A CN 110234141 A CN110234141 A CN 110234141A CN 201810181890 A CN201810181890 A CN 201810181890A CN 110234141 A CN110234141 A CN 110234141A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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Abstract
The invention discloses a kind of successional method, apparatus of holding voice communication, equipment and media.This method comprises: monitoring the RSRP of the Reference Signal Received Power RSRP of current service cell and the homologous ray adjacent cell of current service cell after establishing the enhancing voice service EVS voice communication with Correspondent Node；The RSRP of the RSRP and homologous ray adjacent cell that determine current service cell meet encoding and decoding speech switching condition；According to encoding and decoding speech switching condition, the Correspondent Node for controlling user terminal and user terminal is switched to self-adapting multi-rate narrowband encoding and decoding AMR-WB voice communication from EVS voice communication.The successional method, apparatus of holding voice communication, equipment and the medium provided according to embodiments of the present invention, avoids the upgrading to the network equipment.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of successional method, apparatus of holding voice communication, equipment
And computer storage medium.
Background technique
Due to technological evolvement, the market demand etc. factor, some high-end smartphones gradually support next-generation voice coder
Decoder --- enhancing voice service (Enhance Voice Services, EVS) encoder, it is wide compared to adaptive multi-rate
Band encoder (Adaptive Multi-Rate Wideband, AMR-WB) has higher code efficiency and anti-interference ability,
EVS encoder can realize higher voice quality under the conditions of same transmission bandwidth.
At present terminal and network generally use AMR-WB codec to long term evolution voice (Voice over LTE,
VoLTE) conversational speech carries out encoding and decoding, uses self-adapting multi-rate narrowband codec (Adaptive Multi-Rate
Narrow Band, AMR-NB) to global system for mobile communications (Global System for Mobile Communication,
GSM) conversational speech carries out encoding and decoding.When generation long term evolution (Long Term Evolution, LTE) in VoLTE communication process
To GSM switching when, it is tone code stream if AMR-NB that AMR-WB speech code stream, which needs transcoding, could normal transmission and decoding, should
Function is by the transcoding of relevant device in upgrading IP multimedia subsystem (IP Multimedia Subsystem, IMS) core net
What device was completed.But current network equipment transcoder does not still support EVS speech code stream to the transcoding of AMR-NB speech code stream.Cause
This, mainly upgrades IMS core net relevant device by the new transcoder of investment buying before operator intention to solve the problems, such as this.
But since transcoder research and development are slower, reasons, the operators such as the device upgrade period is long, investment is big are difficult the short time
Complete the network rebuilding.
Summary of the invention
A kind of successional method, apparatus of holding voice communication of the embodiment of the present invention, equipment and computer storage medium, energy
Enough in transcoding of the EVS speech code stream to AMR-NB speech code stream, the upgrading to the network equipment is avoided.
One side according to an embodiment of the present invention provides a kind of holding voice communication successional method, this method comprises:
After establishing the enhancing voice service EVS voice communication with Correspondent Node, the reference signal of current service cell is monitored
Receive the RSRP of the homologous ray adjacent cell of power RSRP and current service cell；
The RSRP of the RSRP and homologous ray adjacent cell that determine current service cell meet encoding and decoding speech switching condition；
According to encoding and decoding speech switching condition, the Correspondent Node of user terminal and user terminal is controlled from EVS voice communication
It is switched to self-adapting multi-rate narrowband encoding and decoding AMR-WB voice communication.
In one embodiment, this method further include:
Determine that the RSRP of current service cell meets different system handover condition；
Judge that the reception signal of the adjacent cell of the RSRP of current service cell, the RSRP of homologous ray adjacent cell and different system is strong
Degree RSSI meets injection frequency continuous voice call SRVCC switching condition, and the reception signal for sending the adjacent cell of different system is strong
Degree instruction RSSI is to base station, so that SRVCC switching occurs for user terminal.
In one embodiment, establish with the RSRP for after the EVS voice communication of Correspondent Node, monitoring current service cell and
The RSRP of the homologous ray adjacent cell of current service cell, comprising:
After establishing the EVS voice communication with Correspondent Node, determine that the RSRP of current service cell meets the first A2 event, and
The RSRP of current service cell is sent to base station by predetermined period；
Receive base station send the first Monitoring instruction, and according to the first Monitoring instruction monitor current service cell RSRP and
The RSRP of homologous ray adjacent cell；
Wherein, the quality that the first A2 event represents current service cell is lower than the first absolute thresholding of serving cell.
In one embodiment, encoding and decoding speech switching condition includes that the RSRP of current service cell meets the first A2 thing
It is discontented that the RSRP of part, the RSRP of current service cell and homologous ray adjacent cell is unsatisfactory for A3 event, the RSRP of homologous ray adjacent cell
The RSRP of sufficient A4 event and current service cell meets the 2nd A2 event；
Wherein, the quality that the 2nd A2 event represents current service cell is less than the second absolute thresholding of serving cell, and the
Two absolute thresholdings are lower than the first absolute thresholding；
The quality that A3 event represents homologous ray adjacent cell is higher by relative threshold than the quality of current service cell；
The quality that A4 event represents homologous ray adjacent cell is higher than the absolute thresholding of adjacent cell.
In one embodiment, according to encoding and decoding speech switching condition, the communication pair of user terminal and user terminal is controlled
End is switched to AMR-WB voice communication from EVS voice communication, comprising:
According to encoding and decoding speech switching condition, sends and updates UPDATE SIP (Session Initiation Protocol) information to Correspondent Node,
Voice encoding and decoding mode is AMR-WB in the medium property row of Session Description Protocol SDP in UPDATE sip message；
The 200UPDATE sip message that Correspondent Node is sent is received, so that user terminal and Correspondent Node are logical from EVS voice
Words are switched to AMR-WB voice communication, and voice encoding and decoding mode is in the medium property row of SDP in 200UPDATE sip message
AMR-WB。
In one embodiment, different system handover condition includes that the RSRP of current service cell meets the 3rd A2 event, the
The quality that three A2 events represent current service cell is less than the absolute thresholding of third of serving cell, and the absolute thresholding of third is lower than the
Two absolute thresholdings.
In one embodiment, SRVCC switching condition includes that the RSRP of current service cell meets the first A2 event, current
The RSRP of serving cell with the RSRP of homologous ray adjacent cell is unsatisfactory for A3 event, the RSRP of homologous ray adjacent cell is unsatisfactory for A4 thing
The received signal strength RSSI of the adjacent cell of part and the RSRP of current service cell and different system meets B2 event；
Wherein, B2 event represents the 4th absolute thresholding of the quality of current service cell lower than serving cell and different system
The quality of adjacent cell is higher than the absolute thresholding of different adjacent cell.
In one embodiment, the trigger condition of the first A2 event are as follows: Ms+Hys_A2 < Thersh_A2, Ms are current clothes
The RSRP for cell of being engaged in, Hys_A2 are the sluggishness of the first A2 event, and Thersh_A2 is the first absolute thresholding of serving cell.
In one embodiment, the trigger condition of A3 event are as follows: Mn+Ofn+Ocn-Hys_A3 > Ms+Ofs+Off；A4 event
Trigger condition be Mn+Ofn+Ocn-Hys_A4 > Thersh_A4；
Wherein, Mn is the RSRP of homologous ray adjacent cell, and Ofn is the frequency certain bias of homologous ray adjacent cell, and Ocn is homology
The certain bias for adjacent cell of uniting, Hys_A3 are that A3 event is sluggish, and Hys_A4 is that A4 event is sluggish, and Ofs is current service cell frequency
Rate certain bias, Off are current service cell offset parameter, and Thersh_A4 is the absolute thresholding of adjacent cell.
In one embodiment, the trigger condition of B2 event are as follows: Ms+Hys_B2 < Thersh_B2, Mhet+Ofn_B2-
Hys_B2 > Thersh_B2 ', Hys_B2 are that B2 event is sluggish, and Thersh_B2 is the 4th absolute thresholding of serving cell, Ofn_B2
For the frequency certain bias of the adjacent cell of different system, Thersh_B2 ' is the absolute thresholding of different adjacent cell.
According to another aspect of an embodiment of the present invention, provide a kind of holding voice communication successional device, feature exists
In device includes:
Monitoring modular, for establishing with after the enhancing voice service EVS voice communication of Correspondent Node, monitoring current service is small
The RSRP of the homologous ray adjacent cell of the Reference Signal Received Power RSRP and current service cell in area；
Determining module, for determining that the RSRP and the RSRP of homologous ray adjacent cell of current service cell meet encoding and decoding speech
Switching condition；
Control module, for controlling the Correspondent Node of user terminal and user terminal according to encoding and decoding speech switching condition
Self-adapting multi-rate narrowband encoding and decoding AMR-WB voice communication is switched to from EVS voice communication.
It is according to an embodiment of the present invention in another aspect, providing a kind of holding voice communication successional equipment, feature exists
In equipment includes: processor and the memory for being stored with computer program instructions；
Processor realizes that holding voice communication provided in an embodiment of the present invention is successional when executing computer program instructions
Method.
It is according to an embodiment of the present invention in another aspect, providing a kind of computer storage medium, which is characterized in that computer is deposited
It is stored with computer program instructions on storage media, realizes that the embodiment of the present invention provides when computer program instructions are executed by processor
The successional method of holding voice communication.
The successional method, apparatus of holding voice communication, equipment and computer storage according to embodiments of the present invention are situated between
Matter determines that current service is small by monitoring the RSRP of the RSRP of current service cell, the homologous ray adjacent cell of current service cell
The RSRP in area and the RSRP of homologous ray adjacent cell meet encoding and decoding speech switching condition；And according to encoding and decoding speech switching condition,
The automatic Correspondent Node for realizing user terminal and user terminal is switched to AMR-WB voice communication from EVS voice communication, avoids
To the upgrading network equipment of the network equipment, and avoid carrier network transformation investment.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 shows the flow diagram for the holding successional method of voice communication that an embodiment according to the present invention provides；
Fig. 2 shows RSRP the first A2 events of satisfaction for the determination current service cell that one embodiment of the invention provides, and will
The RSRP of current service cell is sent to the flow diagram of base station by predetermined period；
The a row that Fig. 3 shows the SDP media negotiation part of one embodiment of the invention offer is set as the schematic diagram of EVS；
The RSRP of the serving cell and RSRP of homologous ray adjacent cell expires before Fig. 4 shows the determination that one embodiment of the invention provides
The flow diagram of sufficient encoding and decoding speech switching condition；
The a row that Fig. 5 shows the SDP media negotiation part of one embodiment of the invention offer is set as the schematic diagram of AMR-WB；
The RSRP that Fig. 6 shows the determination current service cell of one embodiment of the invention offer meets different system handover condition
Flow diagram；
Fig. 7 shows the structural representation for the holding successional device of voice communication that an embodiment according to the present invention provides
Figure；
Fig. 8 shows the hardware structural diagram of the holding successional equipment of voice communication according to one embodiment of invention.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below, in order to make mesh of the invention
, technical solution and advantage be more clearly understood, with reference to the accompanying drawings and embodiments, the present invention is further retouched in detail
It states.It should be understood that specific embodiment described herein is only configured to explain the present invention, it is not configured as limiting the present invention.
To those skilled in the art, the present invention can be real in the case where not needing some details in these details
It applies.Below the description of embodiment is used for the purpose of better understanding the present invention to provide by showing example of the invention.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that including
There is also other identical elements in the process, method, article or equipment of the element.
Since current network equipment transcoder does not support still EVS speech code stream to the transcoding of AMR-NB speech code stream, lead
Cause EVS call that call drop occurs when switching between different system.It is mainly new by investment buying before operator intention in the prior art
Transcoder upgrades IMS core net relevant device to solve the problems, such as this.But transcoder research and development are slower, the device upgrade period is long, throws
The reasons such as big are provided, operator is difficult the short time completion network rebuilding.
Based on this, the embodiment of the present invention proposes a kind of successional method, apparatus of holding voice communication, equipment and medium,
Before user terminal switches to different system, by the Reference Signal Received Power (Reference for determining current service cell
Signal Receiving Power, RSRP) and the RSRP of homologous ray adjacent cell of current service cell meet encoding and decoding speech
Switching condition；And according to encoding and decoding speech switching condition, the Correspondent Node for controlling user terminal and user terminal is logical from EVS voice
Words are switched to AMR-WB voice communication, have not only avoided the upgrading of the network equipment, but also maintain voice communication continuity.
The successional method of holding voice communication provided in an embodiment of the present invention is carried out in conjunction with attached drawing first below detailed
Explanation.
Fig. 1 shows the flow diagram of the holding successional method of voice communication provided according to embodiments of the present invention.This
The successional method of holding voice communication that inventive embodiments provide is applied to subscriber terminal side, as shown in Figure 1, the present invention is implemented
Example in the successional method 100 of holding voice communication the following steps are included:
S110, after establishing the EVS voice communication with Correspondent Node, RSRP and the current service for monitoring current service cell are small
The RSRP of the homologous ray adjacent cell in area.
In an embodiment of the present invention, step S110 includes:
S1101 after establishing the EVS voice communication with Correspondent Node, determines that the RSRP of current service cell meets the first A2
Event, and the RSRP of current service cell is sent to base station by predetermined period.
In an embodiment of the present invention, Fig. 2 shows RSRP the first A2 events of satisfaction for determining current service cell, and will work as
The RSRP of preceding serving cell is sent to the flow diagram of base station 200 by predetermined period, step S1101 the following steps are included:
S210, the EVS for establishing user terminal and Correspondent Node converse.
As an example, user terminal is VoLTE mobile phone, and VoLTE mobile phone initiates to invite (invite) message to the hand
The Correspondent Node of machine, wherein invite message includes parameter necessary to conversation type and some callings.In this example,
Voice encoding and decoding mode is set as EVS, specific example in the property column (i.e. a row) of SDP media negotiation part in invite message
As shown in Figure 3.After the Correspondent Node of the VoLTE mobile phone receives invite message, to VoLTE mobile phone returning response message, connect
Request is established by call, to establish the EVS voice communication between VoLTE mobile phone and the Correspondent Node of the mobile phone.
S220 monitors current service cell RSRP value Ms.
As an example, the current service cell of above-mentioned VoLTE mobile phone is in long term evolution (Long Term
Evolution, LTE) system.After the VoLTE mobile phone and Correspondent Node establish EVS voice communication, the VoLTE mobile phone is in LTE
The RSRP value Ms of measurement gap (Measure Gap, MeasGAP) the monitoring current service LTE cell of radio frames.Wherein, usually
In the case of user terminal only one receiver, be only possible to receive signal on a frequency point in synchronization.So measurement GAP
User terminal is exactly allowed to leave the period that current frequency point is measured to other frequency points.
S230, judges whether Ms meets the first A2 event.
As an example, while VoLTE mobile phone monitoring Ms, and judge the current service cell of VoLTE mobile phone
Whether RSRP value Ms meets the first A2 event.Wherein, the first A2 event represents the quality of current service cell lower than serving cell
The first absolute thresholding.
As a specific example, the trigger condition of the first A2 event are as follows: Ms+Hys_A2 < Thersh_A2, Hys_A2 are
The sluggishness of first A2 event, Thersh_A2 are the first absolute thresholding of current service cell.Wherein, the sluggishness of the first A2 event
And the first absolute thresholding of current service cell is empirical value, and it can be depending on different application scenarios, the present invention is implemented
Example is not particularly limited.
Ms is reported to base station by predetermined period if Ms meets the first A2 event by S240；If Ms is unsatisfactory for the first A2 thing
Part, then return step S220.
In an embodiment of the present invention, pingpang handoff, the RSRP value Ms of current service cell meet the first A2 in order to prevent
After event needs to meet specific duration, i.e. triggered time (timeToTriger), then Ms is reported to by predetermined period
Base station.Wherein, the triggered time embodiment of the present invention is not particularly limited, it can be depending on concrete application scene.
In an embodiment of the present invention, if Ms is unsatisfactory for the first A2 event, the quality for representing current service cell is preferable,
The trigger condition of the first A2 event is not reached, then above-mentioned VoLTE mobile phone continues to monitor Ms.
S1102 receives the first Monitoring instruction that base station is sent, and monitors current service cell according to the first Monitoring instruction
The RSRP of the homologous ray adjacent cell of RSRP and current service cell.
As an example, after base station receives the Ms that VoLTE mobile phone is sent, base station is sent out according to the Ms reported to user terminal
The first Monitoring instruction is sent, instruction instruction VoLTE mobile phone monitors the RSRP value Ms of current service LTE cell in MeasGAP, with
And it is located at the LTE adjacent cell RSRP value Mn in same system with current service LTE cell.
S120, the RSRP of the RSRP and homologous ray adjacent cell that determine current service cell meet encoding and decoding speech switching item
Part.
In an embodiment of the present invention, Fig. 4 is that the RSRP of serving cell and the RSRP of homologous ray adjacent cell meet before determining
The flow diagram of encoding and decoding speech switching condition 300, step S120 the following steps are included:
S310, judges whether Ms meets the first A2 event.
In an embodiment of the present invention, in step S310 Ms whether meet the first A2 event judgment method and step S230
In method it is similar.
S320 judges whether Ms and homologous ray adjacent cell RSRP value Mn meet A3 thing if Ms is to meet the first A2 event
Whether part and Mn meet A4 event；If Ms is unsatisfactory for the first A2 event, return step S220.
In an embodiment of the present invention, A3 event represent homologous ray adjacent cell quality it is higher than the quality of current service cell
Relative threshold out.The quality that A4 event represents homologous ray adjacent cell is higher than the absolute thresholding of adjacent cell.
As an example, the trigger condition of A3 event are as follows: Mn+Ofn+Ocn-Hys_A3 > Ms+
Ofs+Off；The trigger condition of A4 event is Mn+Ofn+Ocn-Hys_A4 > Thersh_A4.
Wherein, Ofn is the frequency certain bias of the adjacent cell of homologous ray, and Ocn is the spy of the adjacent cell adjacent cell of homologous ray
Fixed biasing, Hys_A3 are that A3 event is sluggish, and Hys_A4 is that A4 event is sluggish, and Ofs is current service cell frequency certain bias,
Off is current service cell offset parameter, and Thersh_A4 is the absolute thresholding of adjacent cell.The numerical value of above-mentioned parameter is experience
Value, the embodiment of the present invention are not particularly limited.
S330, if Ms, Mn meet one of event in A3 event or A4 event, return step S1102；If Ms and
Mn meets A3 event and Mn meets A4 event, then the adjacent cell that user terminal switches to homologous ray continues voice conversation.
In an embodiment of the present invention, if Ms and Mn meet A3 event and Mn is unsatisfactory for A4 event or Ms and Mn is unsatisfactory for
A3 event and Mn meet A4 event, then represent that current service cell is second-rate, and the quality of homologous ray adjacent cell is preferable, but not
It is enough that the switching of current service cell to adjacent area occurs, therefore user terminal continues to monitor Ms and Mn.
In an embodiment of the present invention, if Ms and Mn meet A3 event and Mn meets A4 event, the neighbour of homologous ray is represented
The quality of cell is higher than current service cell quality, and be enough to occur current service cell to homologous ray adjacent cell switching,
The adjacent cell that homologous ray can then be switched to continues EVS call.
S340 judges whether Ms meets the 2nd A2 event if Ms and Mn are unsatisfactory for A3 event and Mn is unsatisfactory for A4 event；
If Ms meets the 2nd A2 event, enter next step S1301, if being unsatisfactory for the 2nd A2 event, return step S1102.
In an embodiment of the present invention, the quality that the 2nd A2 event represents current service cell is less than the second of serving cell
Absolute thresholding, and the second absolute thresholding is lower than the first absolute thresholding.
As an example, the trigger condition of the 2nd A2 event is Ms+Hys_A2 ' < Thersh_A2 ', and Hys_A2 ' is the
The sluggishness of two A2 events, Thersh_A2 ' are the second absolute thresholding of current service LTE cell, which is less than and works as
First absolute thresholding Thersh_A2 of preceding service LTE cell.In an embodiment of the present invention, if Ms meets the 2nd A2 event,
The quality for representing current service cell at this time is further deteriorated compared under conditions of meeting the first A2 event.
In an embodiment of the present invention, encoding and decoding speech switching condition includes that the RSRP of current service cell meets the first A2
The RSRP of event, the RSRP of current service cell and homologous ray adjacent cell be unsatisfactory for A3 event, homologous ray adjacent cell RSRP not
The RSRP for meeting A4 event and current service cell meets the 2nd A2 event.
S130 controls the Correspondent Node of user terminal and user terminal from EVS voice according to encoding and decoding speech switching condition
Call is switched to AMR-WB voice communication.
In an embodiment of the present invention, in step S130 the following steps are included:
S1301 sends according to encoding and decoding speech switching condition and updates UPDATE SIP (Session Initiation Protocol) information to communication
Opposite end, voice encoding and decoding mode is AMR-WB in the medium property row of Session Description Protocol SDP in UPDATE sip message.
As an example, if the RSRP value Ms of the current service LTE cell and RSRP value Mn of homologous ray adjacent cell meets
Encoding and decoding speech switching condition, then VoLTE mobile phone, which is sent, updates UPDATE session initiation protocol (Session Initiation
Protocol, SIP) information to the VoLTE mobile phone Correspondent Node.Wherein, Session Description Protocol in the UPDATE sip message
Voice encoding and decoding mode is AMR- in the medium property row (i.e. a row) of (Session Description Protocol, SDP)
WB, specific example are as shown in Figure 5.
S1302 receives the 200UPDATE sip message that Correspondent Node is sent, so that user terminal and Correspondent Node are from EVS
Voice communication is switched to AMR-WB voice communication, encoding and decoding speech side in the medium property row of SDP in 200UPDATE sip message
Formula is AMR-WB.
As an example, the Correspondent Node of above-mentioned VoLTE mobile phone will reply 200UPDATE sip message to VoLTE hand
Machine, the message are the response messages for the UPDATE sip message that Correspondent Node sends VoLTE mobile phone, are connect comprising Correspondent Node
The session parameter of the update of receipts represents Correspondent Node and receives session modification request.Specifically, in 200UPDATE sip message
Voice encoding and decoding mode is updated to AMR-WB in the medium property row of middle SDP, thus the Correspondent Node of VoLTE mobile phone and the mobile phone
AMR-WB voice communication is switched to from EVS voice communication.
The successional method of holding voice communication provided in an embodiment of the present invention, by the RSRP for monitoring current service cell
It with the RSRP of homologous ray adjacent cell, realizes from EVS encoding and decoding and automatically switches to AMR-WB encoding and decoding, to avoid the network equipment
Upgrading.
In some embodiments of the invention, when the Correspondent Node of user terminal and user terminal is cut from EVS voice communication
After shifting to AMR-WB voice communication, wireless environment may further deteriorate.User terminal is cut between different system in order to prevent
Call drop occurs when changing, the successional method of holding voice communication provided in an embodiment of the present invention is further comprising the steps of:
S140 determines that the RSRP of current service cell meets different system handover condition.
In an embodiment of the present invention, different system handover condition includes that the RSRP of current service cell meets the 3rd A2 thing
Part, the quality that the 3rd A2 event represents current service cell are less than the absolute thresholding of third of serving cell, and the absolute thresholding of third
Lower than the second absolute thresholding.
As an example, the trigger condition of the 3rd A2 event is Ms+Hys_A2 " < Thersh_A2 ", and Hys_A2 " is the
The sluggishness of three A2 events, Thersh_A2 " are the absolute thresholding of third of current service cell, and the absolute thresholding of the third is less than current
The absolute thresholding Thersh_A2 ' of the second of serving cell.In an embodiment of the present invention, if the RSRP of current service cell meets
3rd A2 event, the then quality for representing current service cell at this time further become compared under conditions of meeting the 2nd A2 event
Must be worse, it is possible that the case where different system switches.
S150 judges the reception of the adjacent cell of the RSRP of current service cell, the RSRP of homologous ray adjacent cell and different system
Signal strength (RSSI) meets injection frequency continuous voice call SRVCC switching condition, and the adjacent cell for sending different system connects
Signal strength RSSI is received to base station, so that SRVCC switching occurs for user terminal.
In an embodiment of the present invention, Fig. 6 shows the RSRP of determining current service cell provided in an embodiment of the present invention
Meet the flow diagram of different system handover condition 400, i.e. step S150 the following steps are included:
S410 monitors the RSRP value Ms of current service cell, the RSRP value Mn of homologous ray adjacent cell, and the different system of monitoring
Adjacent cell received signal strength indicator RSSI value Mhet.
In an embodiment of the present invention, if the RSRP of current service cell meets different system handover condition, user terminal
Measurement report is sent to base station, and base station is according to the measurement report to sending instructions under user terminal.Then user terminal refers to according to this
The RSRP value Ms of monitoring current service cell, the RSRP value Mn of homologous ray adjacent cell are enabled, and monitor the adjacent cell of different system
Received signal strength indicator RSSI value Mhet.
As an example, system where user terminal is LTE system, and different system is gsm system.
S420, judges whether Ms meets the first A2 event, if Ms is unsatisfactory for the first A2 event, return step S220.
In an embodiment of the present invention, in step S420 Ms whether meet the first A2 event judgment method and step S230
In method it is similar, details are not described herein.
S430 judges whether Ms and Mn meets A3 event and whether Mn meets A4 thing if Ms meets the first A2 event
Part.
In an embodiment of the present invention, the method for step S430 is similar to step S320, and details are not described herein.If Ms meets
First A2 event, the then quality for representing current service cell do not take an evident turn for the better yet.
S440, if Ms, Mn meet one of event in A3 event or A4 event, return step S1102；If Ms and
Mn meets A3 event and Mn meets A4 event, then the adjacent cell that user terminal switches to homologous ray continues voice conversation, that is, enters
Step S330；If Ms and Mn are unsatisfactory for A3 event and Mn is unsatisfactory for A4 event, judge whether Ms meets B2 event.
In an embodiment of the present invention, if Ms and Mn meet A3 event and Mn is unsatisfactory for A4 event or Ms and Mn meets not
A3 event and Mn meet A4 event, then represent the reasonable receiving of the quality or homologous ray adjacent cell of current service cell, no
Different system switching occurs for necessity, but does not reach the condition for the adjacent cell for making user terminal switch to homologous ray, therefore user
Terminal continues to monitor Ms and Mn.If Ms and Mn meet A3 event and Mn meets A4 event, the matter of the adjacent cell of homologous ray is represented
Amount is higher than current service cell quality, and reaches the condition for the adjacent cell for making user terminal switch to homologous ray, then can switch
Adjacent cell to homologous ray continues AMR-WB voice conversation.
In an embodiment of the present invention, B2 event represent the quality of current service cell lower than serving cell the 4th absolutely
The quality of the adjacent cell of thresholding and different system is higher than the absolute thresholding of different adjacent cell.As an example, the triggering item of B2 event
Part are as follows: Ms+Hys_B2<Thersh_B2, Mhet+Ofn_B2-Hys_B2>Thersh_B2 ', Hys_B2 are that B2 event is sluggish,
Thersh_B2 is the 4th absolute thresholding of serving cell, and Ofn_B2 is the frequency certain bias of the adjacent cell of different system,
Thersh_B2 ' is the absolute thresholding of different adjacent cell.Wherein, above-mentioned parameter is empirical value, can depending on concrete application scene,
The embodiment of the present invention is not particularly limited.
S450 sends Mhet to base station if Ms meets B2 event；If Ms is unsatisfactory for B2 event, return step S410.
In an embodiment of the present invention, if Ms meets the trigger condition of B2 event, user terminal is by Mhet by default week
Phase is sent to base station.For predetermined period, the embodiment of the present invention is not particularly limited.
S460, user terminal carries out SRVCC switching, and user terminal and Correspondent Node keep both-end voice communication.
After the Mhet that base station receives that user terminal is sent, base station sends instructions under Mhet based on the received, instruction instruction
User terminal carries out injection frequency continuous voice call (Single Radio Voice Call Continuity, SRVCC) and cuts
It changes, realizes that both ends keep voice communication, to prevent EVS call that call drop occurs in the switching of LTE to GSM, ensured this
The integrality and duration of call.
The successional method of holding voice communication provided according to embodiments of the present invention, user terminal pass through the current clothes of monitoring
Business cell quality, homologous ray adjacent cell quality and different system adjacent cell quality, before meeting base station triggers SRVCC switching,
The negotiations process again of initiating speech conversation encoding and decoding in advance, to be switched to AMR-WB call from EVS call automatically.Work as wireless environment
When further deteriorating, base station triggers SRVCC switching completes connecting of the AMR-WB call in different system, to ensure the call
Integrality and duration.
Below with reference to specific embodiment, the successional device of holding voice communication provided in an embodiment of the present invention is carried out
Explanation.Fig. 7 shows the structural schematic diagram of the holding voice communication continuity device 500 of one embodiment of the invention.The present invention is implemented
Example provide holding voice communication continuity device 500 include:
Monitoring modular 510 monitors the RSRP of current service cell for establishing with after the EVS voice communication of Correspondent Node
With the RSRP of the homologous ray adjacent cell of current service cell；
Determining module 520, for determining that the RSRP and the RSRP of homologous ray adjacent cell of current service cell meet voice coder
Decode switching condition；
Control module 530, for controlling the communication pair of user terminal and user terminal according to encoding and decoding speech switching condition
End is switched to AMR-WB voice communication from EVS voice communication.
The holding voice communication continuity device provided through the embodiment of the present invention, by monitoring current service cell matter
Amount, homologous ray adjacent cell quality and different system adjacent cell quality are switched to AMR-WB call from EVS call automatically, are not necessarily to IMS
Upgrading network equipment avoids carrier network transformation investment.And due to being not necessarily to the network rebuilding, also accelerate EVS in VoLTE speech
It is applied in call.
In some embodiments, voice communication continuity device 500 is kept further include:
Different system handover condition determining module 540, for determining that the RSRP of current service cell meets different system switching item
Part；
Switching module 550, for judging the RSRP, the RSRP of homologous ray adjacent cell and the neighbour of different system of current service cell
The received signal strength indicator RSSI of cell meets injection frequency continuous voice call SRVCC switching condition, and sends different system
Adjacent cell received signal strength RSSI to base station so that SRVCC switching occurs for user terminal.
In an embodiment of the present invention, monitoring modular 510 specifically can be used for:
After establishing the EVS voice communication with Correspondent Node, determine that the RSRP of current service cell meets the first A2 event, and
The RSRP of current service cell is sent to base station by predetermined period；
Receive base station send the first Monitoring instruction, and according to the first Monitoring instruction monitor current service cell RSRP and
The RSRP of homologous ray adjacent cell；
Wherein, the quality that the first A2 event represents current service cell is lower than the first absolute thresholding of serving cell.
In an embodiment of the present invention, encoding and decoding speech switching condition includes that the RSRP of current service cell meets the first A2
The RSRP of event, the RSRP of current service cell and homologous ray adjacent cell be unsatisfactory for A3 event, homologous ray adjacent cell RSRP not
The RSRP for meeting A4 event and current service cell meets the 2nd A2 event；
Wherein, the quality that the 2nd A2 event represents current service cell is less than the second absolute thresholding of serving cell, and the
Two absolute thresholdings are lower than the first absolute thresholding；
The quality that A3 event represents homologous ray adjacent cell is higher by relative threshold than the quality of current service cell；
The quality that A4 event represents homologous ray adjacent cell is higher than the absolute thresholding of adjacent cell.
In an embodiment of the present invention, control module 530 specifically can be used for:
According to encoding and decoding speech switching condition, sends and updates UPDATE SIP (Session Initiation Protocol) information to Correspondent Node,
Voice encoding and decoding mode is AMR-WB in the medium property row of Session Description Protocol SDP in UPDATE sip message；
The 200UPDATE sip message that Correspondent Node is sent is received, so that user terminal and Correspondent Node are logical from EVS voice
Words are switched to AMR-WB voice communication, and voice encoding and decoding mode is in the medium property row of SDP in 200UPDATE sip message
AMR-WB。
In an embodiment of the present invention, different system handover condition includes that the RSRP of current service cell meets the 3rd A2 thing
Part, the quality that the 3rd A2 event represents current service cell are less than the absolute thresholding of third of serving cell, and the absolute thresholding of third
Lower than the second absolute thresholding.
In an embodiment of the present invention, SRVCC switching condition include current service cell RSRP meet the first A2 event,
The RSRP of current service cell with the RSRP of homologous ray adjacent cell is unsatisfactory for A3 event, the RSRP of homologous ray adjacent cell is unsatisfactory for A4
The received signal strength RSSI of the adjacent cell of the RSRP of event and current service cell and different system meets B2 event；
Wherein, B2 event represents the 4th absolute thresholding of the quality of current service cell lower than serving cell and different system
The quality of adjacent cell is higher than the absolute thresholding of different adjacent cell.
In an embodiment of the present invention, the trigger condition of the first A2 event are as follows: Ms+Hys_A2 < Thersh_A2, Ms are to work as
The RSRP of preceding serving cell, Hys_A2 are the sluggishness of the first A2 event, and Thersh_A2 is the first absolute thresholding of serving cell.
In an embodiment of the present invention, the trigger condition of A3 event are as follows: Mn+Ofn+Ocn-Hys_A3 > Ms+Ofs+Off；A4
The trigger condition of event is Mn+Ofn+Ocn-Hys_A4 > Thersh_A4；
Wherein, Mn is the RSRP of homologous ray adjacent cell, and Ofn is the frequency certain bias of homologous ray adjacent cell, and Ocn is homology
The certain bias for adjacent cell of uniting, Hys_A3 are that A3 event is sluggish, and Hys_A4 is that A4 event is sluggish, and Ofs is current service cell frequency
Rate certain bias, Off are current service cell offset parameter, and Thersh_A4 is the absolute thresholding of adjacent cell.
In an embodiment of the present invention, the trigger condition of B2 event are as follows: Ms+Hys_B2 < Thersh_B2, Mhet+Ofn_
B2-Hys_B2 > Thersh_B2 ', Hys_B2 are that B2 event is sluggish, and Thersh_B2 is the 4th absolute thresholding of serving cell,
Ofn_B2 is the frequency certain bias of the adjacent cell of different system, and Thersh_B2 ' is the absolute thresholding of different adjacent cell.
The successional device of holding voice communication provided in an embodiment of the present invention, had not only avoided IMS network device upgrade, but also
It has ensured EVS voice conversation not call drop after SRVCC switching, has ensured the continuity and integrality of voice communication.
The other details according to an embodiment of the present invention for keeping the successional device of voice communication combine Fig. 1 to figure with more than
The successional method of holding voice communication according to an embodiment of the present invention of 6 descriptions is similar, and details are not described herein.
It can in conjunction with Fig. 1 to Fig. 7 successional method and apparatus of holding voice communication according to an embodiment of the present invention described
To be realized by the successional equipment of holding voice communication.Fig. 8 be show it is continuous according to the holding voice communication of inventive embodiments
600 schematic diagram of hardware configuration of the equipment of property.
As shown in figure 8, the successional equipment 600 of holding voice communication in the present embodiment includes: processor 601, storage
Device 602, communication interface 603 and bus 610, wherein processor 601, memory 602, communication interface 603 are connected by bus 610
It connects and completes mutual communication.
Specifically, above-mentioned processor 601 may include central processing unit (CPU) or specific integrated circuit (ASIC), or
Person may be configured to implement one or more integrated circuits of the embodiment of the present invention.
Memory 602 may include the mass storage for data or instruction.For example it rather than limits, memory
602 may include HDD, floppy disk drive, flash memory, CD, magneto-optic disk, tape or universal serial bus (USB) driver or two
The combination of a or more the above.In a suitable case, memory 602 may include that can be removed or non-removable (or solid
Medium calmly).In a suitable case, memory 602 can be in the inside that keeps the successional equipment 600 of voice communication or outer
Portion.In a particular embodiment, memory 602 is non-volatile solid state memory.In a particular embodiment, memory 602 includes
Read-only memory (ROM).In a suitable case, which can be the ROM of masked edit program, programming ROM (PROM), erasable
Except PROM (EPROM), electric erasable PROM (EEPROM), electrically-alterable ROM (EAROM) or flash memory or two or more with
Above these combination.
Communication interface 603 is mainly used for realizing in the embodiment of the present invention between each module, device, unit and/or equipment
Communication.
Bus 610 includes hardware, software or both, will keep the component of the successional equipment 600 of voice communication coupling each other
It is connected together.For example it rather than limits, bus may include accelerated graphics port (AGP) or other graphics bus, enhancing industry
Standard architecture (EISA) bus, front side bus (FSB), super transmission (HT) interconnection, Industry Standard Architecture (ISA) bus, infiniband
Wide interconnection, low pin count (LPC) bus, memory bus, micro- channel architecture (MCA) bus, peripheral component interconnection (PCI) are total
Line, PCI-Express (PCI-X) bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association part
(VLB) combination of bus or other suitable buses or two or more the above.In a suitable case, bus
610 may include one or more buses.Although specific bus has been described and illustrated in the embodiment of the present invention, the present invention considers to appoint
What suitable bus or interconnection.
That is, the successional equipment 600 of holding voice communication shown in Fig. 8 may be implemented as including: processor
601, memory 602, communication interface 603 and bus 610.Processor 601, memory 602 and communication interface 603 pass through bus
610 connect and complete mutual communication.Memory 602 is for storing program code；Processor 601 is by reading memory
The executable program code stored in 602 runs program corresponding with executable program code, to appoint for executing the present invention
The successional method of holding voice communication in one embodiment, to realize that the holding voice communication described in conjunction with Fig. 1 to Fig. 7 connects
The method and apparatus of continuous property.
The embodiment of the present invention also provides a kind of computer storage medium, and computer journey is stored in the computer storage medium
Sequence instruction；The computer program instructions realize holding voice communication continuity provided in an embodiment of the present invention when being executed by processor
Method.
It should be clear that the invention is not limited to specific configuration described above and shown in figure and processing.
For brevity, it is omitted here the detailed description to known method.In the above-described embodiments, several tools have been described and illustrated
The step of body, is as example.But method process of the invention is not limited to described and illustrated specific steps, this field
Technical staff can be variously modified, modification and addition after understanding spirit of the invention, or suitable between changing the step
Sequence.
Functional block shown in structures described above block diagram can be implemented as hardware, software, firmware or their group
It closes.When realizing in hardware, it may, for example, be electronic circuit, specific integrated circuit (ASIC), firmware appropriate, insert
Part, function card etc..When being realized with software mode, element of the invention is used to execute program or the generation of required task
Code section.Perhaps code segment can store in machine readable media program or the data-signal by carrying in carrier wave is passing
Defeated medium or communication links are sent." machine readable media " may include any medium for capableing of storage or transmission information.
The example of machine readable media includes electronic circuit, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), soft
Disk, CD-ROM, CD, hard disk, fiber medium, radio frequency (RF) link, etc..Code segment can be via such as internet, inline
The computer network of net etc. is downloaded.
It should also be noted that, the exemplary embodiment referred in the present invention, is retouched based on a series of step or device
State certain methods or system.But the present invention is not limited to the sequence of above-mentioned steps, that is to say, that can be according in embodiment
The sequence referred to executes step, may also be distinct from that the sequence in embodiment or several steps are performed simultaneously.
The above description is merely a specific embodiment, it is apparent to those skilled in the art that,
For convenience of description and succinctly, the system, module of foregoing description and the specific work process of unit can refer to preceding method
Corresponding process in embodiment, details are not described herein.It should be understood that scope of protection of the present invention is not limited thereto, it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or substitutions,
These modifications or substitutions should be covered by the protection scope of the present invention.
Claims (13)
1. a kind of successional method of holding voice communication, which is characterized in that the described method includes:
After establishing the enhancing voice service EVS voice communication with Correspondent Node, the reference signal for monitoring current service cell is received
The RSRP of the homologous ray adjacent cell of power RSRP and the current service cell；
The RSRP of the RSRP and the homologous ray adjacent cell that determine the current service cell meet encoding and decoding speech switching condition；
According to the encoding and decoding speech switching condition, the Correspondent Node of user terminal and the user terminal is controlled from EVS voice
Call is switched to self-adapting multi-rate narrowband encoding and decoding AMR-WB voice communication.
2. the method according to claim 1, wherein the method also includes:
Determine that the RSRP of the current service cell meets different system handover condition；
Judge connecing for the adjacent cell of the RSRP of the current service cell, the RSRP of the homologous ray adjacent cell and the different system
It receives signal strength RSSI and meets injection frequency continuous voice call SRVCC switching condition, and send the adjacent cell of the different system
Received signal strength indicator RSSI to base station so that SRVCC switching occurs for the user terminal.
3. the method according to claim 1, wherein the foundation is supervised with after the EVS voice communication of Correspondent Node
Survey the RSRP of the RSRP of current service cell and the homologous ray adjacent cell of the current service cell, comprising:
After establishing the EVS voice communication with Correspondent Node, determine that the RSRP of the current service cell meets the first A2 event, and
The RSRP of the current service cell is sent to base station by predetermined period；
The first Monitoring instruction that base station is sent is received, and the current service cell is monitored according to first Monitoring instruction
The RSRP of RSRP and the homologous ray adjacent cell；
Wherein, the quality that the first A2 event represents the current service cell is lower than the first absolute thresholding of serving cell.
4. the method according to claim 1, wherein the encoding and decoding speech switching condition includes the current clothes
The RSRP that the RSRP for cell of being engaged in meets the first A2 event, the RSRP of the current service cell and the homologous ray adjacent cell is discontented
Sufficient A3 event, the homologous ray adjacent cell RSRP be unsatisfactory for the RSRP of A4 event and the current service cell and meet second
A2 event；
Wherein, the quality that the 2nd A2 event represents the current service cell is less than the second absolute thresholding of serving cell,
And the second absolute thresholding is lower than the first absolute thresholding；
The quality that the A3 event represents current service cell described in the mass ratio of the homologous ray adjacent cell is higher by relative threshold；
The quality that the A4 event represents the homologous ray adjacent cell is higher than the absolute thresholding of adjacent cell.
5. the method according to claim 1, wherein described according to the encoding and decoding speech switching condition, control
The Correspondent Node of user terminal and the user terminal is switched to AMR-WB voice communication from EVS voice communication, comprising:
According to the encoding and decoding speech switching condition, sends and update UPDATE SIP (Session Initiation Protocol) information to the communication pair
It holds, voice encoding and decoding mode is AMR-WB in the medium property row of Session Description Protocol SDP in the UPDATE sip message；
The 200UPDATE sip message that the Correspondent Node is sent is received, so that user terminal and the Correspondent Node are from EVS language
Sound call is switched to AMR-WB voice communication, encoding and decoding speech in the medium property row of SDP in the 200UPDATE sip message
Mode is AMR-WB.
6. according to the method described in claim 2, it is characterized in that, the different system handover condition includes that the current service is small
The RSRP in area meets the 3rd A2 event, and the quality that the 3rd A2 event represents the current service cell is less than serving cell
The absolute thresholding of third, and the absolute thresholding of the third is lower than the second absolute thresholding.
7. according to the method described in claim 2, it is characterized in that, the SRVCC switching condition includes that the current service is small
The RSRP in area meets the first A2 event, the RSRP of the current service cell and the RSRP of the homologous ray adjacent cell and is unsatisfactory for A3
Event, the homologous ray adjacent cell RSRP be unsatisfactory for A4 event and the RSRP of the current service cell and the different system
The received signal strength RSSI of adjacent cell meet B2 event；
Wherein, the B2 event represents the quality of the current service cell lower than the 4th absolute thresholding of serving cell and described
The quality of the adjacent cell of different system is higher than the absolute thresholding of different adjacent cell.
8. according to method described in claim 3,4 or 7, which is characterized in that the trigger condition of the first A2 event are as follows: Ms+
Hys_A2 < Thersh_A2, Ms are the RSRP of the current service cell, and Hys_A2 is the sluggishness of the first A2 event,
Thersh_A2 is the first absolute thresholding of the serving cell.
9. the method according to claim 4 or 7, which is characterized in that the trigger condition of the A3 event are as follows: Mn+Ofn+
Ocn-Hys_A3>Ms+Ofs+Off；
The trigger condition of the A4 event is Mn+Ofn+Ocn-Hys_A4 > Thersh_A4；
Wherein, Mn is the RSRP of the homologous ray adjacent cell, and Ofn is the frequency certain bias of the homologous ray adjacent cell, and Ocn is
The certain bias of the homologous ray adjacent cell, Hys_A3 are that the A3 event is sluggish, and Hys_A4 is that the A4 event is sluggish, Ofs
For the current service cell frequency certain bias, Off is the current service cell offset parameter, and Thersh_A4 is described
The absolute thresholding of adjacent cell.
10. the method according to the description of claim 7 is characterized in that the trigger condition of the B2 event are as follows: Ms+Hys_B2 <
Thersh_B2, Mhet+Ofn_B2-Hys_B2 > Thersh_B2 ', Hys_B2 are that the B2 event is sluggish, and Thersh_B2 is institute
The 4th absolute thresholding of serving cell is stated, Ofn_B2 is the frequency certain bias of the adjacent cell of the different system, Thersh_B2 '
For the absolute thresholding of the different adjacent cell.
11. a kind of successional device of holding voice communication, which is characterized in that described device includes:
Monitoring modular monitors current service cell for establishing with after the enhancing voice service EVS voice communication of Correspondent Node
The RSRP of the homologous ray adjacent cell of Reference Signal Received Power RSRP and the current service cell；
Determining module, for determining that the RSRP and the RSRP of the homologous ray adjacent cell of the current service cell meet voice coder
Decode switching condition；
Control module, for controlling the communication of user terminal and the user terminal according to the encoding and decoding speech switching condition
Opposite end is switched to self-adapting multi-rate narrowband encoding and decoding AMR-WB voice communication from EVS voice communication.
12. a kind of successional equipment of holding voice communication, which is characterized in that the equipment includes: processor and is stored with
The memory of computer program instructions；
The processor realizes the holding language as described in claim 1-10 any one when executing the computer program instructions
The method of sound Session continuity.
13. a kind of computer storage medium, which is characterized in that be stored with computer program in the computer storage medium and refer to
It enables, realizes that the holding voice as described in claim 1-10 any one is logical when the computer program instructions are executed by processor
Talk about successional method.
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