CN103167565B - Method, base station and the system of speech perception when switching is lifted in gsm system - Google Patents
Method, base station and the system of speech perception when switching is lifted in gsm system Download PDFInfo
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- CN103167565B CN103167565B CN201110413981.9A CN201110413981A CN103167565B CN 103167565 B CN103167565 B CN 103167565B CN 201110413981 A CN201110413981 A CN 201110413981A CN 103167565 B CN103167565 B CN 103167565B
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Abstract
The method that the present invention discloses speech perception when switching is lifted in a kind of gsm system, comprises the following steps：Physical message PhyInfo is fed back in base station after the switching access HandoverAccess of mobile communication terminal transmission is received to mobile communication terminal, while starting the detection to downlink voice；The testing result that can be replaced according to the speech frame of downlink voice, insertion PhyInfo replaces the speech frame that can be replaced；When receiving the SABM frames of mobile communication terminal transmission or reaching maximum number of times of transmission Ny1, stop PhyInfo transmission.Invention additionally discloses the base station of speech perception and system when switching is lifted in a kind of gsm system.The present invention can lift speech perception.
Description
Technical field
The present invention relates to wireless communication field, speech perception when relating more specifically to lift switching in a kind of gsm system
Method, base station and system.
Background technology
In GSM (Global System of Mobile communication, global system for mobile communications), in order to
User is improved to the perceptibility of call voice, quality of wireless channel decline or it is other in the case of need by switching
(HandOver, HO) is to the relatively good cell of radio signal quality to improve voice quality.By taking asynchronised handover as an example, general
Switching flow is as shown in Figure 1：
Network side sends switching command (HandOver Command, HOCMD) on former channel (BTS1)；After mobile phone is received
Switching access (HandOverAccess) is sent in specified destination channel (BTS2), destination channel base station (BTS2) is being received
Responded after HandOver Access physical message (Physical Information, PhyInfo) inform mobile phone it is current when
Between lead (Timing Advance, TA) information, mobile phone then sends SAMB frames (Set Asynchronous Balanced
Mode, set synchronous balanced model, one kind of lapdm protocol frames), UA frames are responded in base station, and (Unnumbered Acknowledge are non-
Numbering confirmation, one kind of lapdm protocol frames), last mobile phone sends HandOver Complete, and switching is completed, BTS1 release originals
Channel.
In the process, if because the reasons such as radio signal quality decline cause BTS2 before timer T3105 time-out
Do not receive mobile phone transmission SABM frames, then need to resend PhyInfo, at most send Ny1 times, if it exceeds Ny1 times still
SABM frames are not so received, then base station (BTS2) reports connection failure (Connection Failure), handoff failure, mobile phone is returned
To former channel (BTS1), as shown in Figure 2.
In above process, if the PhyInfo information drop-outs sent, base station must be when T3105 timer expiries
PhyInfo can be retransmitted, and mobile phone is not send speech frame in this period of time, it is possible that voice quality can be caused to decline.
For this problem, in the prior art, hand can be reduced to a certain extent by shortening the preset time of T3105 timers by existing
The method that machine receives PhyInfo time delay to reduce lost speech frames.But this method also has shortcoming, because first
T3105 timers generally set not long, the leeway very little of compression, and secondly PhyInfo needs quickly with road believing by stealing frame
Sent on road (FACCH), transmission times frequently can also be impacted to downlink voice quality.
The content of the invention
A kind of method of speech perception when switching is lifted in gsm system it is a primary object of the present invention to provide, it is intended to
Optimize asynchronised handover flow, so as to lift speech perception.
In order to realize goal of the invention, the present invention provides a kind of method that speech perception when switching is lifted in gsm system, its
Comprise the following steps：
Base station is whole to mobile communication after the switching access Handover Access of mobile communication terminal transmission are received
End feedback physical message PhyInfo, while starting the detection to downlink voice；
The testing result that can be replaced according to the speech frame of downlink voice, insertion PhyInfo replaces the voice that can be replaced
Frame；
When receiving the set synchronous balanced model SABM frames of mobile communication terminal transmission or reaching maximum number of times of transmission Ny1,
Stop PhyInfo transmission.
Preferably, the detection started to downlink voice includes：
Whether speech frame is lacked or can be replaced detection downlink voice.
Preferably, whether the detection downlink voice speech frame missing or can be replaced and specifically include：
Downlink voice is detected whether because discontinuous transmitting DTX causes speech frame to lack, or due to just in two voices
Speech frame is caused to be replaced between burst Burst.
Preferably, the testing result that the speech frame according to downlink voice can be replaced, insertion PhyInfo is replaced can quilt
Include before the speech frame of replacement：
The testing result lacked according to speech frame is inserted PhyInfo and sent to mobile communication terminal.
The present invention provides a kind of base station of speech perception when switching is lifted in gsm system, it include hand-off process module,
Downlink voice detection module and speech frame processing module, wherein,
The hand-off process module is used for after the Handover Access of mobile communication terminal transmission are received, Xiang Yi
Mobile communication terminal feeds back PhyInfo；
The downlink voice detection module is used to start to downlink voice when feeding back PhyInfo to mobile communication terminal
Detection；
The speech frame processing module is used for the testing result that can be replaced according to the speech frame of downlink voice, insertion
PhyInfo replaces the speech frame that can be replaced；Receive the SABM frames of mobile communication terminal transmission or reach maximum number of times of transmission
During Ny1, stop PhyInfo transmission.
Preferably, the downlink voice detection module specifically for detection downlink voice whether speech frame missing or can quilt
Replace.
Preferably, whether the downlink voice detection module is further used for detection downlink voice due to discontinuous transmission
DTX causes speech frame to lack, or due to just causing speech frame to be replaced between two voice bursts Burst.
Preferably, the speech frame processing module is further used for：
The testing result lacked according to speech frame is inserted PhyInfo and sent to mobile communication terminal.
The present invention separately provides a kind of gsm system, and it includes mobile communication terminal and base station, and the base station includes hand-off process
Module, downlink voice detection module and speech frame processing module, wherein,
The hand-off process module is used for after the Handover Access of mobile communication terminal transmission are received, Xiang Yi
Mobile communication terminal feeds back PhyInfo；
The downlink voice detection module is used to start to downlink voice when feeding back PhyInfo to mobile communication terminal
Detection；
The speech frame processing module is used for the testing result that can be replaced according to the speech frame of downlink voice, insertion
PhyInfo replaces the speech frame that can be replaced；Receive the SABM frames of mobile communication terminal transmission or reach maximum number of times of transmission
During Ny1, stop PhyInfo transmission.
Preferably, the mobile communication terminal is mobile phone.
The present invention has little to no effect to normal downlink speech frame, but can shorten mobile communication terminal (such as hand
Machine etc.) PhyInfo time is received, especially in the case of wireless environment is ropy, add PhyInfo issues frequency
Degree, improves mobile phone and receives PhyInfo success rate and promptness, so as to reduce the loss of speech frame, lifts speech perception.
The present invention does not conflict to existing module of software and hardware, it is not necessary to redesign, cost is less.
Brief description of the drawings
Fig. 1 is the signaling process figure of asynchronised handover under normal circumstances in the prior art；
Fig. 2 for asynchronised handover under abnormal conditions in the prior art signaling process figure；
The flow chart of the embodiment of the method for speech perception Fig. 3 is lifts switching in gsm system of the present invention when；
The signaling process figure of the embodiment of the method for speech perception Fig. 4 is lifts switching in gsm system of the present invention when；
The structural representation of the base station embodiment of speech perception Fig. 5 is lifts switching in gsm system of the present invention when.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Reference picture 3, is the flow chart of the embodiment of the method for speech perception when switching is lifted in gsm system of the present invention.Such as
Shown in Fig. 3, this method comprises the following steps：
Step S10, base station is after the switching access Handover Access of mobile communication terminal transmission are received, Xiang Yi
Mobile communication terminal feeds back physical message PhyInfo, while starting the detection to downlink voice；In the present invention, mobile communication terminal
It can be mobile phone, base station is provided with downlink voice detection module, the up switching access of mobile phone transmission is being received in base station
After Handover Access, when feeding back physical message PhyInfo to mobile phone, the downlink voice detection module starts to descending
The detection of voice, to detect to send to the speech frame of mobile phone whether lack or can be replaced, for example, detectable downlink voice
Whether speech frame is caused to lack due to DTX (Discontinuous Transmission, discontinuous send), or due to just
Speech frame is caused to be replaced between two voice Burst (burst).
Step S20, the testing result that can be replaced according to the speech frame of downlink voice, insertion PhyInfo replace can by for
The speech frame changed；This step is actual in two kinds of situation：It can be replaced, insert if detecting the speech frame of downlink voice
PhyInfo replaces the speech frame that can be replaced；If detecting the speech frame missing of downlink voice, lacked according to speech frame
Testing result is inserted PhyInfo and sent to mobile phone.
Step S30, when receiving the SABM frames of mobile communication terminal transmission or reaching maximum number of times of transmission Ny1, stops
PhyInfo transmission.In reference picture 4, the embodiment of the present invention, in step S20, within the time of T3105 timers, repeat always
Multiple PhyInfo are sent to mobile phone, until when receiving the SABM frames of mobile phone transmission or reaching maximum number of times of transmission Ny1, stopping
PhyInfo transmission.
The inventive method embodiment when detecting speech frame missing or can be replaced due to sending PhyInfo to hand
Machine, can shorten the time that mobile phone receives PhyInfo, especially in the case of wireless environment is ropy, add PhyInfo
Issue frequency, improve success rate and promptness that mobile phone receives PhyInfo, so as to reduce the loss of speech frame, lift language
Sound perceptibility.The present invention does not conflict to existing module of software and hardware, it is not necessary to redesign, cost is less.
Reference picture 5, the base station embodiment of speech perception, the base when proposing to lift switching in a kind of gsm system of the invention
Stand and the above method can be achieved.As shown in figure 5, base station of the embodiment of the present invention includes hand-off process module 10, downlink voice detection mould
Block 20 and speech frame processing module 30, wherein,
Hand-off process module 10 is used for after the Handover Access of mobile communication terminal transmission are received, to movement
Communication terminal feeds back PhyInfo；
Downlink voice detection module 20 is used to start the inspection to downlink voice when feeding back PhyInfo to mobile communication terminal
Survey；For example, whether detectable should send to the speech frame of mobile phone of downlink voice detection module 20 lacks or can be replaced.Specifically
, whether detectable downlink voice causes speech frame due to DTX (Discontinuous Transmission, discontinuous send)
Missing, or due to just causing speech frame to be replaced between two voice Burst (burst).
Speech frame processing module 30 is used for the testing result that can be replaced according to the speech frame of downlink voice, insertion
PhyInfo replaces the speech frame that can be replaced；Receive the SABM frames of mobile communication terminal transmission or reach maximum number of times of transmission
During Ny1, stop PhyInfo transmission.If specifically, the speech frame that speech frame processing module 30 detects downlink voice can quilt
Replace, then insert PhyInfo and replace the speech frame that can be replaced；If detecting the speech frame missing of downlink voice, basis
The testing result insertion PhyInfo of speech frame missing is simultaneously sent to mobile phone.Within the time of T3105 timers, speech frame processing
Module 30 repeats to send always multiple PhyInfo to mobile phone, until receiving the SABM frames of mobile phone transmission or reaching maximum transmission
During times N y1, stop PhyInfo transmission.
Base station embodiment of the present invention due to being provided with hand-off process module 10, downlink voice detection module 20 and language in a base station
Sound frame processing module 30, PhyInfo is sent when detecting speech frame missing or can be replaced to mobile phone, can shorten hand
Machine receives PhyInfo time, especially in the case of wireless environment is ropy, and add PhyInfo issues frequency, carries
Rise mobile phone and received PhyInfo success rate and promptness, so as to reduce the loss of speech frame, lift speech perception.This hair
Bright that existing module of software and hardware is not conflicted, it is not necessary to redesign, cost is less.
The present invention a kind of gsm system is also provided, the gsm system include above-mentioned lifting switch when speech perception base station and
Mobile communication terminal, wherein mobile communication terminal can be mobile phone, and lifted switching when speech perception base station structure and
Operation principle can refer to earlier figures 3 to embodiment illustrated in fig. 5, just not repeat herein.Due to gsm system of the present invention have it is above-mentioned
The base station of speech perception during lifting switching, can increase the PhyInfo frequency that issues, and lifting mobile phone receives PhyInfo success
Rate and promptness, so as to reduce the loss of speech frame, lift speech perception.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of method of speech perception when switching is lifted in gsm system, it is characterised in that comprise the following steps：
Base station is anti-to mobile communication terminal after the switching access Handover Access of mobile communication terminal transmission are received
Physical message PhyInfo is presented, while whether downlink voice is detected because discontinuous transmitting DTX causes speech frame to lack, Huo Zheyou
In just causing speech frame to be replaced between two voice bursts Burst；
The testing result that can be replaced according to the speech frame of downlink voice, insertion PhyInfo replaces the speech frame that can be replaced；
When receiving the set synchronous balanced model SABM frames of mobile communication terminal transmission or reaching maximum number of times of transmission Ny1, stop
PhyInfo transmission.
2. the method as described in claim 1, it is characterised in that the detection that the speech frame according to downlink voice can be replaced
As a result, insertion PhyInfo includes before replacing the speech frame that can be replaced：
The testing result lacked according to speech frame is inserted PhyInfo and sent to mobile communication terminal.
3. in a kind of gsm system lifted switching when speech perception base station, it is characterised in that including hand-off process module, under
Row speech detection module and speech frame processing module, wherein,
The hand-off process module is used for after the Handover Access of mobile communication terminal transmission are received, and leads to mobile
Believe terminal feedback PhyInfo；
The downlink voice detection module be used for mobile communication terminal feed back PhyInfo when detection downlink voice whether due to
Discontinuous transmitting DTX causes speech frame to lack, or due to just cause between two voice bursts Burst speech frame can by for
Change；
The speech frame processing module is used for the testing result that can be replaced according to the speech frame of downlink voice, inserts PhyInfo
Replace the speech frame that can be replaced；When receiving the SABM frames of mobile communication terminal transmission or reaching maximum number of times of transmission Ny1, stop
Only PhyInfo transmission.
4. base station as claimed in claim 3, it is characterised in that the speech frame processing module is further used for：
The testing result lacked according to speech frame is inserted PhyInfo and sent to mobile communication terminal.
5. a kind of gsm system, it is characterised in that the base station including mobile communication terminal and as described in claim 3 or 4.
6. gsm system as claimed in claim 5, it is characterised in that the mobile communication terminal is mobile phone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110413981.9A CN103167565B (en) | 2011-12-13 | 2011-12-13 | Method, base station and the system of speech perception when switching is lifted in gsm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110413981.9A CN103167565B (en) | 2011-12-13 | 2011-12-13 | Method, base station and the system of speech perception when switching is lifted in gsm system |
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| CN103167565A CN103167565A (en) | 2013-06-19 |
| CN103167565B true CN103167565B (en) | 2017-11-07 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105323803A (en) * | 2014-06-20 | 2016-02-10 | 中兴通讯股份有限公司 | Method and device for improving switch voice quality |
| CN104168612B (en) * | 2014-08-25 | 2018-09-25 | 京信通信***（中国）有限公司 | It is a kind of to realize the method and device switched between base station |
| CN107027156B (en) * | 2016-01-29 | 2020-06-26 | 华为技术有限公司 | Method and terminal equipment for sending voice frame |
| CN111212452B (en) * | 2020-01-13 | 2022-05-17 | 海能达通信股份有限公司 | Handover method for voice communication, communication system, terminal and storage medium |
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|---|---|---|---|---|
| US5625872A (en) * | 1994-12-22 | 1997-04-29 | Telefonaktiebolaget Lm Ericsson | Method and system for delayed transmission of fast associated control channel messages on a voice channel |
| CN101155035A (en) * | 2006-09-30 | 2008-04-02 | 华为技术有限公司 | Method and system for transmitting context status information of grouping stream |
| CN101287297A (en) * | 2008-05-27 | 2008-10-15 | 中兴通讯股份有限公司 | Method for enhancing terminal switching efficiency, asynchronous switching method and transceiver for base station |
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2011
- 2011-12-13 CN CN201110413981.9A patent/CN103167565B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5625872A (en) * | 1994-12-22 | 1997-04-29 | Telefonaktiebolaget Lm Ericsson | Method and system for delayed transmission of fast associated control channel messages on a voice channel |
| CN101155035A (en) * | 2006-09-30 | 2008-04-02 | 华为技术有限公司 | Method and system for transmitting context status information of grouping stream |
| CN101287297A (en) * | 2008-05-27 | 2008-10-15 | 中兴通讯股份有限公司 | Method for enhancing terminal switching efficiency, asynchronous switching method and transceiver for base station |
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