CN101646214B - Method and device for improving reselection success rate when terminal across accesses technical network - Google Patents
Method and device for improving reselection success rate when terminal across accesses technical network Download PDFInfo
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- CN101646214B CN101646214B CN2008100415216A CN200810041521A CN101646214B CN 101646214 B CN101646214 B CN 101646214B CN 2008100415216 A CN2008100415216 A CN 2008100415216A CN 200810041521 A CN200810041521 A CN 200810041521A CN 101646214 B CN101646214 B CN 101646214B
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Abstract
The invention discloses a method and a device for improving the reselection success rate when a terminal across accesses a technical network, which are used for a terminal to access a second network from a first network. In the method and the device, after the terminal acquires the signal intensity of a cell of the second network from the first network, the terminal continues reading main information blocks of the cell, and if a public land mobile network is judged to be a registered public land mobile network or an equivalent public land mobile network, the second network is reselected. The method and the device can enable users to feel the optimal network quality and improve the success rate of normal service.
Description
Technical field
The present invention refers to a kind of method and device that can improve reselection success rate when terminal across accesses technical network especially about a kind of mobile communication technology.
Background technology
Because the development of second generation mobile communication technology and 3G (Third Generation) Moblie technology supports the mode mobile terminal of two kinds of standards day by day to occur.As far as these portable terminals, whether power saving is an important indicator judging that its performance is good and bad.Span into the technical network gravity treatment, become a reason of the power consumption of dual-mode handset to a certain extent, therefore, improve the reselection success rate that spans into technical network, as far as user and manufacturer, all significant.
Mobile communication terminal commonly used has multiple, like GSM/GPRS, GSM/CDMA, GSM/WCDMA, and GSM/TD-SCDMA etc., in this article,, adopt the dual-mode solution of GSM/TD-SCDMA as example, explain spanning into the network reselection technology.As shown in Figure 1, this spans into the network reselection scheme mainly by GSM physical layer 11, TDD physical layer 12, GSM Access Layer 21, and TDD Access Layer 22 is accomplished.Please continue to consult Fig. 2, the existing network reselection scheme that spans into is, in step S11; When dual-mode terminal resides in the GSM network, if in step S12, the timer expiry of timing search TDD sub-district; Then change step S13 over to, otherwise program is back to step S11.In step S13, GSM Access Layer 21 can request GSM physical layer 11 be searched for the TDD sub-districts, and in step S14, the Search Results of the TDD sub-district that acquisition GSM physical layer is searched.In step S15, greater than zero, then GSM Access Layer 21 changes step S16 over to as if the signal strength signal intensity of judging the TDD sub-district, otherwise program is back to step S13.In step S16, switch physical layer, the TDD network is arrived in gravity treatment immediately.And then, judge PLMN (the PublicLand Mobile Network at place, TDD sub-district again in step S17; PLMN) whether be PLMN (the Registered Public Land Mobile Network of registration; RPLMN) or the equivalence PLMN (Equivalent Public Land Mobile Network; EPLMN), if, then finish, otherwise switch back the GSM network again in step S18, promptly program is back to step S11.This gravity treatment scheme strategy is simple, but the problem that exists is that if the PLMN of the TDD network that searches out is not RPLMN, perhaps EPLMN is then still resident with arbitrary cells under TDD, finally still can get back to the GSM network again.The repeatedly switching phenomenon of this portable terminal between two base stations not only increased the time of searching net, nor can better network quality be provided to the user.
Summary of the invention
Main purpose of the present invention is to provide a kind of network reselection method, can improve the success rate of terminal across accesses technical network gravity treatment.
For accomplishing above-mentioned purpose, the present invention can adopt following technical scheme:
A kind of method that improves reselection success rate when terminal across accesses technical network is used for the terminal and spans into second network by first network, it is characterized in that this method comprises the steps:
Whether step 2, first network judge the signal strength signal intensity of the said sub-district in second network greater than zero, if then the physical layer of first network reads the Master Information Block of said sub-district, otherwise, get into step 4;
Step 3, the Access Layer of first network judge according to the Master Information Block that obtains whether the residing PLMN in said sub-district is registration PLMN or PLMN of equal value; If; Then preserve the said sub-district that searches, otherwise, step 4 got into;
Step 4 judges whether also have other sub-district to need search in second network, if, return step 1, otherwise, step 5 got into;
Step 5 sorts the said sub-district that searches of preserving, and obtains a ranking results;
Step 6 switches to second network according to said ranking results by first network.
When being in non-limit at said terminal and calling on state urgently; Also comprise step before the said step 1; If the timer expiry of timing search second network; Then the physical layer of first network is searched for the sub-district in second network, and the physical layer of then said first network is searched for the sub-district in said second network, and the Search Results that is obtained comprises the cell identification code and the received signal code power of this sub-district.
When being in limit at said terminal and calling on state urgently; Also comprise step before the said step 1: ask the physical layer of said first network to search for the sub-district in first network at current place; If the sub-district in said first network that searches all is acceptable sub-district; The physical layer of then said first network is searched for the sub-district in second network, and the Search Results that is obtained comprises the cell identification code and the received signal code power of this sub-district.
When the physical layer of said first network read the Master Information Block of said sub-district, said terminal can also paging receiving.
The present invention provides a kind of device that improves reselection success rate when terminal across accesses technical network simultaneously, comprises the terminal, first network and second network, and this device also comprises:
Signal receives and processing module, be used for obtaining a sub-district of said second network signal, obtain the signal strength signal intensity of this signal, and judge that whether this signal strength signal intensity is greater than zero;
The first Dynamic Selection module is used in said signal strength signal intensity make Master Information Block receive the Master Information Block that obtains said sub-district with processing module, otherwise notification signal receiving the signal that obtains another sub-district in said second network with processing module greater than zero the time;
Master Information Block receives and processing module, is used for the Master Information Block according to the said sub-district that obtains, and judges whether the residing PLMN in this sub-district is registration PLMN or PLMN of equal value;
Module is preserved in the sub-district, is used for when said Master Information Block reception is judged the residing PLMN in said sub-district for registration PLMN or PLMN of equal value with processing module, preserving the said sub-district that searches;
The second Dynamic Selection module; Be used for when said Master Information Block reception and processing module are judged the residing PLMN in said sub-district for registration PLMN or PLMN of equal value; Judge whether also have other sub-district to need search in said second network; If also have other sub-districts to need search, then notification signal receives the signal that obtains another sub-district in said second network with processing module, otherwise; The sub-district that searches in the module is preserved in the sub-district sort, obtain a ranking results;
The handover network module is used for the ranking results that obtained according to the second Dynamic Selection module, switches to one of them sub-district of second network.
Said device also comprises timer; When non-limit is called on state urgently; This timer be used for signal receive obtain the signal strength signal intensity of a sub-district of said second network with processing module before; Time to searching for second network is carried out timing, if the time surpasses the time that is provided with in advance, then asks physical layer to search for the sub-district of second network; When limit was called on state urgently, this timer was used for the time of searching for first network is carried out timing, if timer judges that the time of search first network is overtime, then asked physical layer to search for first network cell.
Said device also comprises the acceptable cell judge module, is used for when limit is called on state urgently, judges whether the sub-district of first network searched is acceptable sub-district, and when being acceptable sub-district in this sub-district, request search second network cell.
Said signal receives and processing module, also is used for obtaining the cell identification code and the received signal code power of a sub-district of said second network.
When the physical layer of said first network read the Master Information Block of said sub-district, said terminal can also paging receiving.
The present invention is through under first network access technique, and before network switched, the PLMN that at first judges the sub-district of second network was EPLMN or RPLMN, has avoided two internetworkly to repeat to switch phenomenon, has shortened the time of gravity treatment, has played the effect of power saving.
The present invention has improved user's network quality through all sub-districts under second network are searched for.
When the present invention reads the Master Information Block of sub-district of second network through the physical layer at first mixed-media network modules mixed-media; The mode that adopts background to read is carried out; When the physical layer that promptly is employed in said first network reads the Master Information Block of said sub-district; The terminal can also this mode of paging receiving, has avoided leakage paging phenomenon, has improved the call completion ratio of dual-mode terminal.
Description of drawings
Fig. 1 shows the procotol layering sketch map of the communication network of mode mobile terminal;
Fig. 2 shows the schematic flow sheet of existing network reselection scheme;
Fig. 3 shows the schematic flow sheet that spans into the technical network gravity treatment according to the first embodiment of the present invention;
Fig. 4 shows the schematic flow sheet that spans into the technical network gravity treatment according to the second embodiment of the present invention;
Fig. 5 shows the device that spans into the technical network reselection success rate according to raising of the present invention.
Main element symbol description among the figure
1 physical layer, 2 Access Layers
11GSM physical layer 12TDD physical layer
21GSM Access Layer 22TDD Access Layer
31 first networks, 32 second networks
33 signals receive and processing module 34 first Dynamic Selection modules
35 Master Information Block receive with processing module 36 sub-districts and preserve module
37 second Dynamic Selection modules, 38 handover network modules
Embodiment
For let above and other objects of the present invention, feature and advantage can be more obviously understandable, cooperates appended graphicly, elaborate as follows:
See also Fig. 3, this figure shows the schematic flow sheet that spans into the technical network gravity treatment according to the first embodiment of the present invention, and its display terminal is jumped to the process of the second network TD-SCDMA network by the first network G SM network.In step S101, the resident GSM of portable terminal sub-district.In step S102, judge whether the timer of timing search TDD sub-district is overtime, if judged result is for being then to change step S103 over to.In step S103, a sub-district of the Access Layer request physical layer of GSM network search TDD network, the Search Results that is obtained comprises the cell ID and the received signal code power of this sub-district.In step S104; The GSM physical layer is given Access Layer with the TDD reporting district information that searches; This Access Layer is in step S105, and whether the signal strength signal intensity of judging the TDD sub-district of being searched out greater than zero, if; Then in step S106, the wait physical layer is read Master Information Block (the Master information block of corresponding TDD sub-district; MIB).In step S107, the GSM physical layer reports the GSM Access Layer with the MIB of TDD sub-district.The GSM Access Layer is in step S108, and the PLMN that judges current TDD sub-district is RPLMN or EPLMN, if judged result is RPLMN or EPLMN, then preserves the TDD sub-district of searching out in step S109; If judged result then gets into step S110 for not, judge whether to also have other TDD sub-district to need search; If judged result for being, then is back to step S103, otherwise; Program gets into step S111, in step S111, is sorted according to signal strength signal intensity in the TDD sub-district of preserving.Then, in step S112, the GSM Access Layer switches physical layer, and gravity treatment immediately is to the strongest TDD sub-district of signal.To above-mentioned first embodiment, in brief, if that is: network side does not become the TDD cell configuration adjacent area of GSM; Then the GSM physical layer is after reporting TDD Search Results (the cell parameter id and the signal strength signal intensity RSCP that comprise the TDD sub-district) to Access Layer; Can continue to read the system message MIB of corresponding TDD sub-district, the GSM Access Layer will judge whether PLMN wherein is RPLMN or EPLMN according to the MIB that obtains then; If satisfy this condition, then gravity treatment is to TDD.In the practical communication process, if being in limit, dual-mode terminal calls on state urgently, can only emergency call; And other GSM sub-district of searching out all is acceptable sub-district; The physical layer of can asking the GSM Access Layer continues search TDD sub-district, and requires to read the MIB of TDD sub-district, and this process is as shown in Figure 4.
See also Fig. 4; This figure shows the schematic flow sheet that spans into the technical network gravity treatment according to the second embodiment of the present invention; It is presented at dual-mode terminal and is in the state of calling on urgently of limitting; Can only emergency call, and other GSM sub-district of searching out all is under the situation of acceptable sub-district, and the terminal is jumped to the process of TD-SCDMA network by the GSM network.In step S201, the resident GSM of portable terminal sub-district.In step S102, judge whether Anycell Cell searching timer expiry, if judged result is for being then to change step S203 over to.In step S203, GSM Access Layer request physical layer search GSM sub-district.In step S204; The GSM physical layer is given the GSM Access Layer with the GSM reporting district information that searches, and GSM Access Layer and then in step S205 judges whether the GSM sub-district is acceptable sub-district; If judged result is for being; Then in step S206, GSM Access Layer request physical layer is searched for the sub-district of TDD network, and the Search Results that is obtained comprises the cell ID and the received signal code power of this sub-district.In step S207; The GSM physical layer is given Access Layer with the TDD sub-district information reporting that searches; This Access Layer is in step S208, and whether the signal strength signal intensity of judging the TDD sub-district of being searched out greater than zero, if; Then in step S209, the wait physical layer is read Master Information Block (the Master information block of corresponding TDD sub-district; MIB).In step S210, the GSM physical layer reports the GSM Access Layer with the MIB of TDD sub-district.The GSM Access Layer is in step S211, and the PLMN that judges current TDD sub-district is RPLMN or EPLMN, if judged result is RPLMN or EPLMN; Then preserve the TDD sub-district of searching out, if judge that structure for not, then gets into step S213 in step S212; Judge whether to also have other TDD sub-district to need search, if judged result is for being then to be back to step S206; Otherwise program gets into step S214; In step S214, sorted according to signal strength signal intensity in the TDD sub-district of preserving; In step S215, switch physical layer, gravity treatment immediately is to the strongest TDD sub-district of signal.
The present invention provides a kind of device that improves reselection success rate when terminal across accesses technical network simultaneously; As shown in Figure 5, be used for terminal (not shown) and insert second network 32, for making elaboration clear by first network 31; Still defining first network here is the GSM network; Second network is the TD-SCDMA network, and certainly, first network and second network are not limited thereto.A kind of device that improves reselection success rate when terminal across accesses technical network provided by the present invention comprises: signal receives and processing module 33; Be used for obtaining a signal from said second network 32; This signal comprises the cell identification code and the received signal code power of a sub-district; Obtain the signal strength signal intensity of this signal in view of the above, and judge that whether this signal strength signal intensity is greater than zero; The first Dynamic Selection module 34; Be used in said signal strength signal intensity greater than zero the time; Make Master Information Block receive the Master Information Block that obtains said sub-district with processing module 35, otherwise notification signal receive the signal that obtains another sub-district in said second network 32 with processing module 33; Master Information Block receives and processing module 35, is used for the Master Information Block according to the said sub-district that obtains, and judges whether the residing PLMN in this sub-district is registration PLMN or PLMN of equal value; Module 36 is preserved in the sub-district, is used for when said Master Information Block reception is judged the residing PLMN in said sub-district for registration PLMN or PLMN of equal value with processing module, preserving the said sub-district that searches; The second Dynamic Selection module 37; Be used for when said Master Information Block reception and processing module are judged the residing PLMN in said sub-district for registration PLMN or PLMN of equal value; Judge whether also have other sub-district to need search in said second network 32; If also have other sub-districts to need search, then notification signal receives the signal that obtains another sub-district in said second network 32 with processing module 33, otherwise; The sub-district that searches in the module 36 is preserved in the sub-district sort, obtain a ranking results; Handover network module 38 is used for the ranking results that obtained according to the second Dynamic Selection module 37, switches to one of them sub-district of second network 32.
In addition; Said device also comprises timer (not shown); When non-limit is called on state urgently, this timer be used for signal receive obtain the signal strength signal intensity of a sub-district of said second network 32 with processing module 33 before, the time of searching for second network is carried out timing; If the time surpasses the time that is provided with in advance, then ask physical layer to search for the sub-district of second network; When limit was called on state urgently, this timer was used for the time of searching for first network is carried out timing, if timer judges that the time of search first network is overtime, then asked physical layer to search for first network cell.
And; Said device also comprises acceptable cell judge module (not shown), is used for when limit is called on state urgently, judges whether the sub-district of first network 31 that is searched is acceptable sub-districts; And when being acceptable sub-district in this sub-district, request search second network cell.
Non-limit is called on urgently under the state; When the terminal will span into second network 32 by first network 31; At first judge that by timer whether timing time surpasses the time that is provided with in advance, if surpass, then asks physical layer to search for a sub-district of second network 32; And Search Results is sent to signal receive and processing module 33; This Search Results comprises the cell identification code and the received signal code power of this sub-district, and signal receives with processing module 33 and obtains the signal strength signal intensity of this signal according to Search Results, and judges that whether this signal strength signal intensity is greater than zero; If greater than zero the time, then make Master Information Block receive the Master Information Block that obtains said sub-district with processing module 35, otherwise notification signal receive the signal that obtains another sub-district in said second network 32 with processing module 33.Master Information Block reception and processing module 35 are behind the Master Information Block of the sub-district that obtains; Judge whether the residing PLMN in this sub-district is registration PLMN or PLMN of equal value; If the residing PLMN in this sub-district is registration PLMN or PLMN of equal value, then triggering cell is preserved module 36 and is preserved the sub-district that searches; If the residing PLMN in sub-district is not registration PLMN or PLMN of equal value; Then trigger the second Dynamic Selection module 37 and judge whether also have other sub-district to need search in second network 32; If also have other sub-districts to need search; Then the second Dynamic Selection module, 37 notification signals receive the signal that obtains another sub-district in said second network 32 with processing module 33, otherwise 37 pairs of sub-districts of this second Dynamic Selection module are preserved the sub-district that searches in the module 36 and sorted; Obtain a ranking results; And then these second Dynamic Selection module, 37 triggering handover network modules 38, according to the ranking results that the second Dynamic Selection module 37 is obtained, switch to one of them sub-district or a plurality of sub-district of second network 32.
In the said process, when the physical layer of said first network read the Master Information Block of said sub-district, the terminal can also paging receiving.
When method and apparatus provided by the present invention read the Master Information Block of TDD sub-district in the GSM physical layer, the mode that adopts background to read was carried out, and made the terminal can also this mode of paging receiving, had avoided leakage paging phenomenon, had improved the call completion ratio of dual-mode terminal.
Though method provided by the present invention is simple, avoided two internetworkly to repeat to switch phenomenon, shortened the time of gravity treatment, played the effect of power saving, improved user's network quality.
Method and apparatus provided by the present invention makes the user experience optimal network quality, has increased the success rate of carrying out regular traffic.
Those of ordinary skills can know; The method that the foregoing description limited not merely is applicable to GSM network and TD-SCDMA network; Like GSM network and cdma network, GSM network and WCDMA network etc.; Still can be suitable for method of the present invention, therefore, the method that the present invention limited is worked as the scope that defines with claim and is as the criterion.
Claims (11)
1. a method that improves reselection success rate when terminal across accesses technical network is used for the terminal and spans into second network by first network, it is characterized in that this method comprises step:
Step 1, terminal obtain the signal strength signal intensity of the sub-district in said second network in said first network;
Whether step 2, said terminal judge the signal strength signal intensity of the said sub-district in said second network greater than zero in said first network, if the physical layer of then said first network reads the Master Information Block of said sub-district, otherwise, get into step 4;
Step 3; The Access Layer of said first network is according to the said Master Information Block that obtains; Judge whether the residing PLMN in said sub-district is registration PLMN or PLMN of equal value, if then preserve the said sub-district that searches; Otherwise, directly get into step 4;
Step 4 judges whether also have other sub-district to need search in said second network, if, return step 1, otherwise, step 5 got into;
Step 5 sorts the said sub-district that searches of preserving, and obtains a ranking results;
Step 6 switches to second network according to said ranking results by first network.
2. the method for raising reselection success rate when terminal across accesses technical network according to claim 1; It is characterized in that; When being in non-limit at said terminal and calling on state urgently, before said step 1, promptly the terminal obtains before the signal strength signal intensity of the sub-district in said second network in said first network; This method also comprises step: if a timer expiry of said second network of timing search, the physical layer of then said first network is searched for the sub-district in said second network.
3. the method for raising reselection success rate when terminal across accesses technical network according to claim 1; It is characterized in that; When being in limit at said terminal and calling on state urgently; Before said step 1, promptly the terminal obtains in said first network before the step of signal strength signal intensity of the sub-district in said second network, and this method also comprises step: ask the physical layer of said first network to search for the sub-district in first network at current place.
4. the method for raising reselection success rate when terminal across accesses technical network according to claim 3; It is characterized in that; Before said step 1; Ask the physical layer of said first network to be searched for after the step of the sub-district in first network at current place, said method also comprises step: if the sub-district in said first network that searches all is acceptable sub-district, the physical layer of then said first network is searched for the sub-district in second network.
5. according to the method for claim 2 or 4 described raising reselection success rate when terminal across accesses technical network; It is characterized in that; The physical layer of said first network is searched for the sub-district in second network, and the Search Results that is obtained comprises the cell identification code and the received signal code power of said sub-district.
6. according to the method for any described raising reselection success rate when terminal across accesses technical network of claim 1～4, it is characterized in that when the physical layer of said first network read the Master Information Block of said sub-district, said terminal can also paging receiving.
7. a device that improves reselection success rate when terminal across accesses technical network is used for the terminal and spans into second network by first network, it is characterized in that this device comprises:
Signal receives and processing module, be used for obtaining a sub-district of said second network signal, obtain the signal strength signal intensity of this signal, and judge that whether this signal strength signal intensity is greater than zero;
The first Dynamic Selection module is used in said signal strength signal intensity make Master Information Block receive the Master Information Block that obtains said sub-district with processing module, otherwise notification signal receiving the signal that obtains another sub-district in said second network with processing module greater than zero the time;
Master Information Block receives and processing module, is used for the Master Information Block according to the said sub-district that obtains, and judges whether the residing PLMN in this sub-district is registration PLMN or PLMN of equal value;
Module is preserved in the sub-district, is used for when said Master Information Block reception is judged the residing PLMN in said sub-district for registration PLMN or PLMN of equal value with processing module, preserving the said sub-district that searches;
The second Dynamic Selection module; Be used for behind the said sub-district that preservation searches; And when said Master Information Block reception and processing module are judged the residing PLMN in said sub-district for registration PLMN or PLMN of equal value, judge whether also have other sub-district to need to search in said second network, if also have other sub-districts to need search; Then notification signal receives the signal that obtains another sub-district in said second network with processing module; Otherwise, the sub-district that searches in the module is preserved in the sub-district sort, obtain a ranking results;
The handover network module is used for the ranking results that obtained according to the second Dynamic Selection module, switches to one of them sub-district of second network.
8. the device of raising reselection success rate when terminal across accesses technical network according to claim 7; It is characterized in that; This device also comprises timer; When non-limit is called on state urgently, this timer be used for signal receive obtain the signal strength signal intensity of a sub-district of said second network with processing module before, the time of searching for second network is carried out timing; When limit was called on state urgently, this timer was used for the time of searching for first network is carried out timing, if timer judges that the time of search first network is overtime, then asked physical layer to search for first network cell.
9. the device of raising reselection success rate when terminal across accesses technical network according to claim 8; It is characterized in that; This device also comprises the acceptable cell judge module, is used for when limit is called on state urgently, judges whether the sub-district of first network that is searched is acceptable sub-district; And when being acceptable sub-district in this sub-district, request search second network cell.
10. the device of raising reselection success rate when terminal across accesses technical network according to claim 7 is characterized in that, said signal receives and processing module, also is used for obtaining the cell identification code and the received signal code power of a sub-district of said second network.
11. the device according to any described raising reselection success rate when terminal across accesses technical network of claim 7～10 is characterized in that, when the physical layer of said first network read the Master Information Block of said sub-district, said terminal can also paging receiving.
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| CN101868005B (en) * | 2010-05-19 | 2012-07-04 | 华为终端有限公司 | Method and device for establishing PLMN list |
| CN103916921B (en) * | 2012-12-31 | 2017-08-08 | 展讯通信（上海）有限公司 | Mobile terminal and its reselecting method of different system cell |
| CN104936239A (en) * | 2015-05-28 | 2015-09-23 | 宇龙计算机通信科技(深圳)有限公司 | LTE network switching method based on eHRPD network and system thereof |
| CN106332188A (en) * | 2015-06-17 | 2017-01-11 | 中国移动通信集团公司 | PLMN (Public Land Mobile Network) selection method for configuring EPLMN (Equivalent PLMN), device and terminal |
| CN108260174B (en) * | 2016-12-29 | 2020-11-27 | 辰芯科技有限公司 | Method for cell reselection in a cellular telecommunications network in a fast moving environment |
| CN110234176B (en) * | 2019-05-28 | 2022-04-15 | 中国联合网络通信集团有限公司 | Method and device for dynamic association of double-card mobile terminal |
| CN111263434B (en) * | 2020-01-15 | 2022-08-05 | Oppo广东移动通信有限公司 | Network registration method, device, terminal and storage medium |
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