CN101984710A - Method, device and terminal for searching cell after completion of voice conversation - Google Patents
Method, device and terminal for searching cell after completion of voice conversation Download PDFInfo
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- CN101984710A CN101984710A CN2010105431532A CN201010543153A CN101984710A CN 101984710 A CN101984710 A CN 101984710A CN 2010105431532 A CN2010105431532 A CN 2010105431532A CN 201010543153 A CN201010543153 A CN 201010543153A CN 101984710 A CN101984710 A CN 101984710A
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Abstract
The invention provides a method for searching a cell after completion of voice conversation, comprising the following steps: if a terminal can not reside at the current cell, sending reselection cell information to the terminal at a network side before voice conversation is released; and searching the resided cell from the cells indicated by the reselection cell information by the terminal after the voice conversation is released. The invention also provides a device and a terminal for searching a cell after completion of voice conversation. By the method in the invention, the terminal can search the resided cell based on the reselection cell information provided by the network side, thus shortening the time for searching the cell.
Description
Technical field
The present invention relates to mobile communication system, relate in particular to method, device and the terminal of searching the sub-district after a kind of voice call finishes.
Background technology
GSM (Global system for Mobile communications, global system for mobile communications) system is a second generation mobile communication system, so that voice service to be provided, to provide multiple simultaneously and replenishes and bearer service.2.5 third-generation mobile communication systems have afterwards introduced GPRS, and (General PacketRadio Service, GPRS) technology has realized the carrying of speech and wireless data service.Progressively expansion along with the data service range of application, the enhancing day by day of new technology demand, 3G (Third Generation) Moblie (3G) technology is arisen at the historic moment, and is called as UMT S (Universal Mobile Telecommunications System, universal mobile telecommunications system) system.
In the early stage of development of 3G network, will form GSM, GPRS, the network coexisted situation of UMTS, this will help providing the business of different service quality.At first be chosen in the covering that hot zones carries out 3G network as operator, with satisfied mobile data services used big user's demand, and use less mobile subscriber, then can continue to use GPRS network for data service.Do not use the user of data service, only use the GSM network to provide the mandarin sound business just passable.
Chinese at present gsm system, the frequency range of use is 900HZ and 1800HZ, abbreviates GSM900 and DCS1800 as.Because the electromagnetic space attenuation speed of DCS1800 frequency range is bigger than the rate of decay of GSM900 frequency range, so the area coverage of DCS1800 sub-district is littler by 40%～58% than GSM900's, operator is in networking, network can be divided into different levels, and on different levels, adopt different traffics to share strategy.Such as: in the big area of some telephone traffic, when terminal is in Idle state, the try one's best sub-district of preferred resident GSM900, and in case enter the voice call state, for the terminal of supporting DCS1800, network can order its sub-district that switches to DCS1800 to carry out speech business, thereby can share the traffic (referring to accompanying drawing 1) under the GSM900 sub-district.And for fear of in the resident DCS1800 sub-district that is used to absorb telephone traffic to these of Idle state terminal, network can be provided with these sub-districts by bar (forbidding), thereby can better control the telephone traffic in the sub-district.In whole network, the telephone traffic in these two frequency ranges will reach an equilibrium state, can prevent to occur the situation of traffic congestion like this.
Because in the voice call process, voice call is carried out in the sub-district that network can order the terminal that resides in the GSM900 sub-district to switch to DCS1800, and after finishing conversation, because the sub-district of DCS1800 can not be resident, terminal need find the sub-district of a GSM900 to carry out resident.So after finishing voice call, terminal can spend a period of time and look for the sub-district resident, and during this period of time, terminal can not be carried out calling and called service.According to the 3GPP agreement, terminal finishes voice call and discharges voice channel under GSM after, need resident as soon as possible to that sub-district that discharges voice channel, if can not be resident then carry out sub-district gravity treatment/selection course in this sub-district.Like this for above-mentioned DCS1800 sub-district by the situation of bar, look for the time of sub-district can be long, will influence user's regular traffic.
When under 3G, carrying out voice call, also there is above-mentioned similar problem for the terminal of supporting UMTS.Promptly in 3G network, the sub-district that exists some just to be used to absorb traffic carrying capacity, these sub-districts itself can not allow terminal resident, when having only terminal to enter voice call, for the load of balancing network switches to this above class sub-district just network is understood command terminal.After voice call finishes because this 3G sub-district can not be resident, so terminal can only be carried out the process that the sub-district is looked in gravity treatment, and look for the sub-district during this period of time in, terminal can not be carried out normal business.
Summary of the invention
The technical problem to be solved in the present invention provides method, device and the terminal of searching the sub-district after a kind of voice call finishes, so that terminal finds persistent district fast behind end of conversation.
In order to address the above problem, the invention provides the method for searching the sub-district after a kind of voice call finishes, comprising:
Network side if terminal can not be resident in current area, sends re-selecting cell information to terminal before voice call discharges;
Described terminal is searched persistent district in the sub-district of described re-selecting cell information indication after discharging voice call.
Further, said method also can have following characteristics, and described network side sends described re-selecting cell information to described terminal by channel release message, Radio Resource control connection release message or reconfiguration message.
Further, said method also can have following characteristics, and described network side uses that existing optional cell carries described re-selecting cell information in described channel release message, Radio Resource control connection release message or the reconfiguration message.
Further, said method also can have following characteristics, and described network side also receives measurement report from described terminal before sending described re-selecting cell information, determine described re-selecting cell information according to described measurement report.
Further, said method also can have following characteristics, and described terminal is searched persistent district and comprised in the sub-district of described re-selecting cell information indication:
Described terminal in described re-selecting cell information, indicate and the sub-district in communication process, measured in search persistent district, if do not find can be resident the sub-district, then search persistent district in other sub-districts of in described re-selecting cell information, indicating.
After also providing a kind of voice call to finish, the present invention searches the device of sub-district, described device, be used for before voice call discharges, if terminal can not be resident in current area, send re-selecting cell information to terminal, so that described terminal is searched persistent district in the sub-district of described re-selecting cell information indication.
Further, said apparatus also can have following characteristics, and described device is to be used for sending described re-selecting cell information to described terminal by channel release message, Radio Resource control connection release message or reconfiguration message.
Further, said apparatus also can have following characteristics, and described device is to be used for using the existing optional cell of described channel release message, Radio Resource control connection release message or reconfiguration message to carry described re-selecting cell information.
Further, said apparatus also can have following characteristics, and described device also is used for receiving measurement report from described terminal before sending described re-selecting cell information, determines described re-selecting cell information according to described measurement report.
The present invention also provides a kind of terminal, and described terminal is used for receiving re-selecting cell information from network side before discharging voice call, after discharging voice call, searches persistent district in the sub-district of described re-selecting cell information indication.
Further, above-mentioned terminal also can have following characteristics, and described terminal comprises that first searches unit and second and search the unit:
Described first searches the unit is used for searching persistent district in communication process in indication of described re-selecting cell information and the sub-district measured;
Described second search the unit be used for described first search the unit do not find can be resident the sub-district time, in described re-selecting cell information, search persistent district in indication and the sub-district in communication process, do not measured.
The present invention has two big advantages: (1) comes designated terminal to look for the sub-district in certain frequency point ranges by network, dwindled the scope of looking for the sub-district, thereby accelerated the speed of looking for the sub-district after voice call finishes, otherwise terminal can only be carried out the full frequency band frequency sweep and looked for the sub-district when the sub-district of finishing in voice call can not be resident, time can be long like this, and network side can utilize the nearby region measurement designated cell as a result in the voice call process; What (2) use is that the optional cell that has now in the message is finished this function, does not need additionally to add the signaling between network and the terminal.
Description of drawings
Fig. 1 is the network hierarchy planning signal of GSM900 and DCS1800 sub-district;
Fig. 2 looks for the flow chart of sub-district after finishing fast for the invention process voice call.
Embodiment
The invention provides a kind of method of looking for the sub-district after voice call finishes accelerated, network side is before discharging voice call, according to the measurement report of the terminal of in communication process before, receiving and the reselecting parameters of this sub-district, decide the content of gravity treatment cell in channel release message, if this terminal can be resident in this sub-district then not be carried this gravity treatment cell, make that terminal can be directly resident in this sub-district that discharges channel; If this sub-district is above-mentioned sub-district that is used for voice call and can not be resident by the bar sub-district, then the sub-district that network can be resident around inciting somebody to action sends to terminal by this gravity treatment cell, and terminal will attempt seeking a proper cell in these sub-districts resident.
The invention provides the method for searching the sub-district after a kind of voice call finishes, comprising:
Network side if terminal can not be resident in current area, then sends re-selecting cell information to terminal before voice call discharges;
Described terminal is searched persistent district in the sub-district of described re-selecting cell information indication after discharging voice call.
Wherein, described network side sends described re-selecting cell information to described terminal by channel release message or Radio Resource control connection release message.Described network side also can send described re-selecting cell information to described terminal by reconfiguration message.
Wherein, network side can use that existing optional cell carries described re-selecting cell information in described channel release message, Radio Resource control connection release message or the reconfiguration message, such as " BA List Pref " cell or gravity treatment cell, also can define new cell and carry re-selecting cell information.
Wherein, described network side also receives measurement report from described terminal before sending described re-selecting cell information, determine described re-selecting cell information according to described measurement report.Concrete, network side can select one or more sub-districts to send to terminal as re-selecting cell information in the sub-district that terminal was measured; Certainly, network side also can select some sub-districts to send to terminal as re-selecting cell according to measurement report and other parameters.
Wherein, when described terminal is searched persistent district in the sub-district of described re-selecting cell information indication, search persistent district in the sub-district of at first in described re-selecting cell information, indicating and in communication process, measuring, if do not find the resident sub-district of energy, then search persistent district in other sub-districts of in described re-selecting cell information, indicating.
The sub-district method of searching fast provided by the invention comprises:
(1) terminal according to the system information of Web broadcast, is measured the signal strength signal intensity of adjacent sub-district on every side in carrying out the voice call process;
(2) the terminal adjacent sub-district result that will measure sends to network side by measurement report, and network will be preserved these metrical informations and use for follow-up judgement;
(3) finishing voice call, when discharging voice channel, for the GSM network, network need send Channel release (channel release) message to terminal, network will decide in channel release message and whether carry " BA List Pref " cell, if this terminal can be resident in this sub-district according to the measurement report of this terminal of receiving before, then forward step (4) to, otherwise forward step (5) to;
For the UMTS network, network can be when sending reconfiguration message to terminal, in reconfiguration message, the gravity treatment cell is carried to terminal, follow-up in the end conversation, when sending the RRC connection release message, just can not carry the gravity treatment cell, gravity treatment cell before directly using in the reallocation message is looked for the sub-district, perhaps network does not send reconfiguration message, directly send the RRC connection release message to terminal, use measurement result to determine whether carrying the gravity treatment cell at connected state, can be resident if discharge the sub-district of RRC connection, then forward step (4) to, otherwise forward step (5) to;
(4) network transmission " Channel release " or RRC connect release (under the UMTS network) message to this terminal, and do not carry " BA List Pref " cell or gravity treatment cell, forward step (6) to;
(5) network transmission " Channel release " or RRC connect release (under the UMTS network) message to this terminal, carried " BA List Pref " cell or gravity treatment cell, and the content of this cell is some sub-districts that current area on every side can be resident, forwards step (7) to;
(6) terminal is directly resident in this sub-district that discharges voice call;
(7) terminal is in " BA List Pref " cell or gravity treatment cell scope, and it is resident to attempt seeking a proper cell.
Fig. 2 is an example of the present invention: be operated in the GSM standard behind the starting up of terminal, the user initiates calling service and enters the voice call state, and in communication process, terminal is the measurement report of adjacent area around network sends constantly.
The scheme implementation of concrete terminal has the following steps:
Step 201: the user initiates calling service and enters the voice call state, and at this time terminal can start the measurement of adjacent sub-district on every side;
Step 202: terminal constantly sends adjacent cell measurement according to the system information of Web broadcast and reports network, and network will use judgements such as these measurement reports switch;
Step 203: network upgrades at every turn and the metrical information of preserving this terminal is used for follow-up judgement;
Step 204: voice call finishes, network need be assembled transmission " Channel release " message to terminal, network will decide whether carry " BA List Pref " cell in " Channelrelease " message according to the measurement report of this terminal of receiving before this moment;
Step 205: after terminal is received " Channel release " message, decode and preserve this message content, finish the dispose procedure of channel;
Step 206: whether carried " BA List Pref " cell in the channel release message that terminal judges is received, if execution in step 207, otherwise execution in step 208;
Step 207: terminal is directly resident in this sub-district that discharges voice call, enters normal service attitude;
Step 208: terminal is attempted seeking a proper cell and is finished resident in the scope of " BA List Pref " cell indication.
The action of above-mentioned terminal or network is all carried out according to the 3GPP related protocol as if no specified otherwise.
In addition, for the process of in the scope of " BA List Pref " cell indication, looking for the sub-district in the step 208, terminal can be used the measurement result in communication process, promptly preferentially attempt indicate and sub-district that in communication process, measured in " BA List Pref " cell, if in these sub-districts, do not find can be resident the sub-district, go to attempt other sub-district in " BA List Pref " cell, indicate so again.
After also providing a kind of voice call to finish, the present invention searches the device of sub-district, described device, be used for before voice call discharges, if terminal can not be resident in current area, send re-selecting cell information to terminal, so that described terminal is searched persistent district in the sub-district of described re-selecting cell information indication.
Wherein, described device is to be used for sending described re-selecting cell information to described terminal by channel release message, Radio Resource control connection release message or reconfiguration message.
Wherein, described device is to be used for using the existing optional cell of described channel release message, Radio Resource control connection release message or reconfiguration message to carry described re-selecting cell information.
Wherein, described device also is used for receiving measurement report from described terminal before sending described re-selecting cell information, determines described re-selecting cell information according to described measurement report.
The present invention also provides a kind of terminal, and described terminal is used for receiving re-selecting cell information from network side before discharging voice call, after discharging voice call, searches persistent district in the sub-district of described re-selecting cell information indication.
Wherein, described terminal comprises that first searches unit and second and search the unit:
Described first searches the unit is used for searching persistent district in communication process in indication of described re-selecting cell information and the sub-district measured;
Described second search the unit be used for described first search the unit do not find can be resident the sub-district time, in described re-selecting cell information, search persistent district in indication and the sub-district in communication process, do not measured.
Search the system of sub-district after the present invention also provides a kind of voice call to finish, comprise the device and the terminal of searching the sub-district after aforementioned voice call finishes.
Will be appreciated that above concrete implementation column only is used to illustrate the present invention, and non-limiting the present invention; any people who is familiar with this technology; under the situation of spirit of the present invention and essence thereof, method of the present invention is carried out various changes or distortion, all be encompassed within protection scope of the present invention.
Claims (11)
1. search the method for sub-district after a voice call finishes, it is characterized in that, comprising:
Network side if terminal can not be resident in current area, sends re-selecting cell information to terminal before voice call discharges;
Described terminal is searched persistent district in the sub-district of described re-selecting cell information indication after discharging voice call.
2. the method for claim 1 is characterized in that, described network side sends described re-selecting cell information to described terminal by channel release message, Radio Resource control connection release message or reconfiguration message.
3. method as claimed in claim 2 is characterized in that,
Described network side uses that existing optional cell carries described re-selecting cell information in described channel release message, Radio Resource control connection release message or the reconfiguration message.
4. as the arbitrary described method of claim 1 to 3, it is characterized in that,
Described network side also receives measurement report from described terminal before sending described re-selecting cell information, determine described re-selecting cell information according to described measurement report.
5. the method for claim 1 is characterized in that, described terminal is searched persistent district and comprised in the sub-district of described re-selecting cell information indication:
Described terminal in described re-selecting cell information, indicate and the sub-district in communication process, measured in search persistent district, if do not find can be resident the sub-district, then search persistent district in other sub-districts of in described re-selecting cell information, indicating.
6. search the device of sub-district after a voice call finishes, it is characterized in that, described device, be used for before voice call discharges, if terminal can not be resident in current area, send re-selecting cell information to terminal, so that described terminal is searched persistent district in the sub-district of described re-selecting cell information indication.
7. device as claimed in claim 6 is characterized in that, described device is to be used for sending described re-selecting cell information to described terminal by channel release message, Radio Resource control connection release message or reconfiguration message.
8. device as claimed in claim 7 is characterized in that,
Described device is to be used for using the existing optional cell of described channel release message, Radio Resource control connection release message or reconfiguration message to carry described re-selecting cell information.
9. as the arbitrary described device of claim 6 to 8, it is characterized in that,
Described device also is used for receiving measurement report from described terminal before sending described re-selecting cell information, determines described re-selecting cell information according to described measurement report.
10. a terminal is characterized in that,
Described terminal is used for receiving re-selecting cell information from network side before discharging voice call, after discharging voice call, searches persistent district in the sub-district of described re-selecting cell information indication.
11. terminal as claimed in claim 10 is characterized in that,
Described terminal comprises that first searches unit and second and search the unit:
Described first searches the unit is used for searching persistent district in communication process in indication of described re-selecting cell information and the sub-district measured;
Described second search the unit be used for described first search the unit do not find can be resident the sub-district time, in described re-selecting cell information, search persistent district in indication and the sub-district in communication process, do not measured.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105431532A CN101984710A (en) | 2010-11-12 | 2010-11-12 | Method, device and terminal for searching cell after completion of voice conversation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105431532A CN101984710A (en) | 2010-11-12 | 2010-11-12 | Method, device and terminal for searching cell after completion of voice conversation |
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| CN2010105431532A Pending CN101984710A (en) | 2010-11-12 | 2010-11-12 | Method, device and terminal for searching cell after completion of voice conversation |
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| CN104284380A (en) * | 2013-07-09 | 2015-01-14 | 中国移动通信集团公司 | Network return method of multi-mode terminal and multi-mode terminal |
| CN105451276A (en) * | 2014-07-29 | 2016-03-30 | 展讯通信（上海）有限公司 | Cell change order method based on circuit switched domain fall back (CSFB) |
| CN105451285A (en) * | 2014-07-29 | 2016-03-30 | 展讯通信（上海）有限公司 | Cell redirection method based on circuit switched domain fall back (CSFB) |
| CN107094311A (en) * | 2017-06-26 | 2017-08-25 | 奇酷互联网络科技（深圳）有限公司 | The method, device and mobile terminal of high standard network reselection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104284380A (en) * | 2013-07-09 | 2015-01-14 | 中国移动通信集团公司 | Network return method of multi-mode terminal and multi-mode terminal |
| CN105451276A (en) * | 2014-07-29 | 2016-03-30 | 展讯通信（上海）有限公司 | Cell change order method based on circuit switched domain fall back (CSFB) |
| CN105451285A (en) * | 2014-07-29 | 2016-03-30 | 展讯通信（上海）有限公司 | Cell redirection method based on circuit switched domain fall back (CSFB) |
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Application publication date: 20110309 |