CN100431383C - Method for increasing multiple mode terminal searching public land mobile net speed - Google Patents
Method for increasing multiple mode terminal searching public land mobile net speed Download PDFInfo
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Abstract
The present invention discloses a method for increasing the speed of a multi-mode terminal searching for a public land mobile network, which comprises: the value of at least one reserved bit of a PLMN access technology identifier is set to be used to represent the specific access technology type of the UTRAN wireless access technology; when the multi-mode terminal searches for a PLMN, if the multi-mode terminal determines to use the UTRAN wireless access technology, then the multi-mode terminal judges the specific access technology type according to the value of the reserved bit and determines a specific access technology according to the judging result, and searches for a PLMN in a frequency range to which the specific access technology is corresponding. Through the present invention, the average time of searching for a network can be shortened, the satisfaction of the multi-mode terminal user can be improved, and the paging success ratio of the system can be improved.
Description
Technical field
The present invention relates to the wireless network access technology of terminal, be meant a kind of method that improves multiple mode terminal searching public land mobile net speed especially.
Background technology
Move partner program (3GPP according to the third generation, The 3rd Generation PartnershipProject) regulation of technical specification (TS) 31.102, have in the universal mobile telecommunications system of the network terminal (UMTS) USIM (USIM, the Universal Subsciber Identity Module) card some files as: preserve the constituent instruments EF that user-controlled PLMN and wireless access technology thereof are tabulated for information about in the usim card
PLMNwACT, preserve the constituent instruments EF that operator's control public land mobile net (OPLMN) and wireless access technology thereof are tabulated for information about in the usim card
OPLMNwACT, preserve the constituent instruments EF that HPLMN and wireless access technology thereof are tabulated for information about in the usim card
HPLMNwACTWith preserve the constituent instruments EF that registered public land mobile net (RPLMN) and wireless access technology thereof are tabulated for information about in the usim card
RPLMNACTBe used for preserving public land mobile net (PLMN, PublicLand Mobile Network) relevant information, each the PLMN item in these files all have two byte access technology identifiers to represent in the mode of bit (bit) mapping which kind of access technology this PLMN adopts.The terminal of network according to the access technology identifier of corresponding PLMN in the corresponding document, is determined the access technology that should select for use when this PLMN of search in the PLMN search procedure of start or periodically tame district's public land mobile net network (HPLMN) or higher priority.
Referring to shown in Figure 1, for supporting the third generation (3G, The 3rd Generation) PLMN of wireless access technology, (the V6.8.0 version that comprises in December, 2004) all uses the bit 8 of first byte in the access technology identifier in existing each version of 3GPP TS 31.102 standards, for the ease of narration, this paper claims that this bit is BIT
UTRAN, use BIT
UTRANValue is 1 to represent that this PLMN supports universal terrestrial access network (UTRAN, Universal Terrestrial Radio Access Network) wireless access technology, 1 to 7 bit of first byte, and 1 to 6 bit of second byte is for keeping a position RFU.
But in the 3GPP standard, regulation has: Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex), and promptly Wideband Code Division Multiple Access (WCDMA) inserts (WCDMA, Wide-band Code Division Multiple Access); 1.28Mcps time division duplex (TDD, Time Division Duplex), promptly the time-division S-CDMA inserts (TD-SCDMA, Time Division-Synchronized Code Division MultipleAccess); And three kinds of UTRAN access technologies of 3.84Mcps TDD.Wherein, at present commonly used have two kinds of WCDMA access technology and TD-SCDMA access technologies.According to the support TD-SCDMA/WCDMA multimode terminal of existing standard design owing to only indicate in the usim card file that this PLMN adopts the UTRAN access technology, in start process or in the PLMN search procedure of periodicity HPLMN or higher priority, when the search wireless access technology is designated UTRAN, can't clearly determine to select for use the WCDMA access technology still is that the TD-SCDMA access technology is searched for this PLMN, therefore can only select for use WCDMA access technology and TD-SCDMA access technology search Frequency Division Duplexing (FDD) (FDD) and time division duplex (TDD) frequency range to search for this PLMN respectively, cause to prolong much the average time of multiple mode terminal searching PLMN, prolong the average time that makes multimode terminal obtain service from starting shooting to, thereby reduced the satisfaction of user to its performance, or cause this multimode terminal time lengthening of HPLMN or higher priority PLMN search periodically under the roaming state, in the PLMN search procedure, terminal can not be monitored beep-page message, thereby makes the paging success rate of system reduce.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that improves multiple mode terminal searching PLMN speed, shortens the average time of multiple mode terminal searching PLMN, thereby improves the performance of multimode terminal and the paging success rate of system.
A kind of method that improves multiple mode terminal searching 3G PLMN speed based on above-mentioned purpose the present invention proposes comprises:
Concrete access technology type with the value representation UTRAN wireless access technology of at least one reservation bit in the PLMN access technology identifier;
Multimode terminal is when carrying out the PLMN search, if determine to select for use the UTRAN wireless access technology, then judge concrete access technology type, in the corresponding frequency band of this concrete access technology, search for PLMN with determined concrete access technology according to judged result according to the value of described reservation bit.
The described concrete access technology type of this method comprises: among TD-SCDMA access technology, WCDMA access technology and the 3.84Mcps TDD at least two.
The described concrete access technology type of this method is two classes;
Choose two different values of a reservation bit in the PLMN access technology identifier and represent wherein the first kind access technology and the second class access technology respectively;
Described deterministic process comprises: the corresponding first kind access technology of value of judging this reservation bit described in the PLMN access technology identifier still is the second class access technology, if corresponding first kind access technology is then selected the corresponding frequency band search PLMN of first kind access technology in first kind access technology for use; If the corresponding second class access technology is then selected the corresponding frequency band search PLMN of the second class access technology in the second class access technology for use.
The described concrete access technology type of this method is three classes;
Choose three different values of two reservation bits in the PLMN access technology identifier and represent wherein first kind access technology, the second class access technology and the 3rd class access technology respectively;
Described deterministic process comprises: the value of this reservation bit described in the judgement PLMN access technology identifier is pairing to be for which kind of access technology, if corresponding first kind access technology is then selected the corresponding frequency band search PLMN of first kind access technology in first kind access technology for use; If the corresponding second class access technology is then selected the corresponding frequency band search PLMN of the second class access technology in the second class access technology for use; If corresponding the 3rd class access technology is then selected the corresponding frequency band search PLMN of the 3rd class access technology in the 3rd class access technology for use.
This method further comprises: described multimode terminal is when shutdown, according to the bit value in the corresponding PLMN access technology identifier of the access technology renewal of current PLMN employing.
This method further comprises: multimode terminal if determine to select for use non-UTRAN wireless access technology, then adopts UTRAN wireless access technology other access technology search PLMN in addition when carrying out the PLMN search.
A kind of method that improves multiple mode terminal searching PLMN speed provided by the invention as can be seen from above has following characteristics and advantage:
(1) utilizes reservation bit in the PLMN access technology identifier, the sign of the concrete access technology type of expression UTRAN wireless access technology is set; Multimode terminal is when carrying out the PLMN search, determine concrete access technology type according to described reservation bit, multimode terminal is in start process or in the PLMN search procedure of periodicity HPLMN search procedure or higher priority, if the PLMN of search adopts the UTRAN access technology, what terminal just can know clearly immediately that the PLMN that will search for adopts is also TD-SCDMA access technology of WCDMA, thereby only need searching for the corresponding frequency range of this access technology, terminal just can find this PLMN, original relatively technical scheme, shortened the average time of terminal searching network, make it suitable, improved multimode terminal user's the satisfaction and the paging success rate of system with the average time of the search network of single-mode terminal.
(2) the present invention is not owing to there is to change the bit definitions of original expression UTRAN access technology in the existing PLMN access technology identifier; guaranteed the single mode of existing TD-SCDMA of comprising or WCDMA wireless access technology or multimode terminal all can compatibility usim card designed according to this invention, thereby protected input and the interests of mobile subscriber on terminal to greatest extent.
(3) use a bit rather than two bits to distinguish TD-SCDMA and WCDMA access technology in the preferred embodiment of the present invention, avoided EF
PLMNwAcT, EF
OPLMNwACTAnd EF
HPLMNwAcTTD-SCDMA and these two kinds of access technology possibilities of WCDMA appear in the single list items of PLMN in the file, thereby decide the trouble waters that access technology priority causes in its sole discretion by terminal when having avoided occurring in the single list items these two kinds of access technologies, make the operator can be according to the actual conditions of networking, which kind of access technology control terminal preferentially uses, and makes the user obtain better service.
Description of drawings
Fig. 1 is a wireless access technology identifier structural representation in the prior art;
Fig. 2 is the wireless access technology identifier structural representation of preferred embodiment of the present invention;
Fig. 3 is the schematic flow sheet of preferred embodiment of the present invention.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
The solution of the present invention is to keep EF in 3GPP TS 31.102 standards
PLMNwACT, EF
OPLMNwACT, EF
HPLMNwACTAnd EF
RPLMNACTThe BIT of the access technology identifier of file
UTRANDefinition constant, still be defined as the UTRAN access technology, and then from the reservation bit RFU of access technology identifier, choose some or a plurality of bits, for the ease of the narration, this paper claims that this bit is BIT
TD/W, according to BIT
TD/WDifferent values identify TD-SCDMA or WCDMA access technology in the UTRAN access technology; When multimode terminal is carrying out PLMN when search, if determine to select for use the UTRAN wireless access technology, then judge concrete access technology type, in the corresponding frequency band of this concrete access technology, search for PLMN with determined concrete access technology according to judged result according to the value of described reservation bit.
Referring to shown in Figure 2, preferred embodiment of the present invention is at multimode terminal usim card file EF
PLMNwACT, EF
OPLMNwACT, EF
HPLMNwACTAnd EF
RPLMNACTThe access technology identifier in, the bit 7 of first byte of getting PLMN access technology identifier is as BIT
TD/W, with BIT
TD/WValue be 0 expression TD-SCDMA access technology, be 1 expression WCDMA access technology.
Referring to shown in Figure 3, when multimode terminal carries out PLMN search or periodically during the PLMN search of HPLMN or higher priority, at first execution in step 301, check and also judge BIT in the PLMN access technology identifier in start
UTRANValue whether be 1, if what illustrate then that this 3G PLMN adopts is the UTRAN access technology, further execution in step 303; Otherwise what this 3G PLMN employing was described is not the UTRAN access technology, enters step 302, adopts other corresponding access technology search PLMN.
The access technology (TD-SCDMA or WCDMA) that terminal equally also adopts according to current PLMN when shutdown is upgraded EF
RPLMNACTThe BIT of access technology identifier in the file
UTRANAnd BIT
TD/W, in the present embodiment, if PLMN adopts the WCDMA access technology, terminal when shutdown just with EF
RPLMNACTThe BIT of access technology identifier in the file
UTRANAnd BIT
TD/WBe changed to 1 and 1 respectively; If PLMN adopts the TD-SCDMA access technology, terminal when shutdown just with EF
RPLMNACTThe BIT of access technology identifier in the file
UTRANAnd BIT
TD/WBe changed to 1 and 0 respectively.
In this programme, usim card manufacturer and terminal are being write or are being upgraded EF in the usim card
PLMNwAcT, EF
OPLMNwACT, EF
HPLMNwAcTAnd EF
RPLMNACTDuring file,, then should upgrade the BIT in the access technology sign of this PLMN if certain PLMN adopts TD-SCDMA or WCDMA access technology
UTRANAnd BIT
TD/WBit makes access technology identifier in the file meet the requirement of this programme.
The above only is preferred embodiment of the present invention, also can take other multiple implementation within the spirit and principles in the present invention, such as: the value that also can define other reservation bit in first or second byte of PLMN access technology identifier identifies the concrete access technology type (TD-SCDMA or WCDMA) in the UTRAN access technology; Perhaps also the combination of available a plurality of reservation bits identifies concrete access technology type in the UTRAN access technology; In addition, the deterministic process in above-mentioned steps 301 and 303 also can be revised as the highest two the bit (BIT to PLMN access technology identifier first byte
UTRANAnd BIT
TD/W) value judges simultaneously, if the highest two bit values are 10, then the concrete access technology type in the decidable UTRAN access technology is TD-SCDMA, if the highest two bit values are 11, then the concrete access technology type in the decidable UTRAN access technology is WCDMA.
Be example with TD-SCDMA and WCDMA access technology in the above-mentioned example, the present invention also can with 3.84Mcps TDD etc. at present or the similar access technology that will occur from now on include, if two kinds of UTRAN access technologies are wherein supported in whole mobile communication system the inside, then can directly adopt the scheme in the foregoing description, if UTRAN access technology more than three kinds or three kinds is wherein supported in whole mobile communication system the inside, then two or more reservation bit positions in the definable PLMN access technology identifier are come these different UTRAN access technologies are distinguished.
In a word, any modification of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1, a kind of method that improves multiple mode terminal searching public land mobile net PLMN speed is characterized in that, comprising:
Concrete access technology type with the value representation universal terrestrial access network UTRAN wireless access technology of at least one reservation bit in the PLMN access technology identifier;
Multimode terminal is when carrying out the PLMN search, if determine to select for use the UTRAN wireless access technology, then judge concrete access technology type, in the corresponding frequency band of this concrete access technology, search for PLMN with determined concrete access technology according to judged result according to the value of described reservation bit.
2, method according to claim 1 is characterized in that, described concrete access technology type comprises: in TD SDMA access technology, Wideband Code Division Multiple Access (WCDMA) access technology and the 3.84Mcps time division duplex access technology at least two.
3, method according to claim 1 and 2 is characterized in that, described concrete access technology type is two classes;
Choose two different values of a reservation bit in the PLMN access technology identifier and represent wherein the first kind access technology and the second class access technology respectively;
Described deterministic process comprises: the corresponding first kind access technology of value of judging this reservation bit described in the PLMN access technology identifier still is the second class access technology, if corresponding first kind access technology is then selected the corresponding frequency band search PLMN of first kind access technology in first kind access technology for use; If the corresponding second class access technology is then selected the corresponding frequency band search PLMN of the second class access technology in the second class access technology for use.
4, method according to claim 1 and 2 is characterized in that, described concrete access technology type is three classes;
Choose three different values of two reservation bits in the PLMN access technology identifier and represent wherein first kind access technology, the second class access technology and the 3rd class access technology respectively;
Described deterministic process comprises: the value of this reservation bit described in the judgement PLMN access technology identifier is pairing to be for which kind of access technology, if corresponding first kind access technology is then selected the corresponding frequency band search PLMN of first kind access technology in first kind access technology for use; If the corresponding second class access technology is then selected the corresponding frequency band search PLMN of the second class access technology in the second class access technology for use; If corresponding the 3rd class access technology is then selected the corresponding frequency band search PLMN of the 3rd class access technology in the 3rd class access technology for use.
5, method according to claim 1 and 2 is characterized in that, further comprises: described multimode terminal is when shutdown, according to the bit value in the corresponding PLMN access technology identifier of the access technology renewal of current PLMN employing.
6, method according to claim 1 and 2, it is characterized in that, further comprise: multimode terminal if determine to select for use non-UTRAN wireless access technology, then adopts UTRAN wireless access technology other access technology search PLMN in addition when carrying out the PLMN search.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100085335A CN100431383C (en) | 2005-02-18 | 2005-02-18 | Method for increasing multiple mode terminal searching public land mobile net speed |
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| CNB2005100085335A CN100431383C (en) | 2005-02-18 | 2005-02-18 | Method for increasing multiple mode terminal searching public land mobile net speed |
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| CN100431383C true CN100431383C (en) | 2008-11-05 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1968283B1 (en) * | 2007-03-09 | 2012-01-25 | Research In Motion Limited | System and method for wireless network selection by multi-mode devices |
| CN102724735A (en) * | 2012-05-28 | 2012-10-10 | 中兴通讯股份有限公司 | Method, device and terminal for selecting public land mobile network (PLMN) |
| CN104041138B (en) * | 2012-12-31 | 2018-08-21 | 展讯通信（上海）有限公司 | Mobile terminal and its network selection method |
| CN104796962B (en) * | 2014-01-16 | 2020-06-05 | 中兴通讯股份有限公司 | Network selection method and device |
| CN106162808B (en) * | 2015-04-20 | 2019-09-13 | 北京佰才邦技术有限公司 | A kind of method and apparatus of network insertion |
| CN104837181A (en) * | 2015-05-13 | 2015-08-12 | 小米科技有限责任公司 | Network access method and device |
| CN106550429A (en) * | 2015-09-16 | 2017-03-29 | 青岛海信移动通信技术股份有限公司 | A kind of method for searching network and terminal |
| US9706485B2 (en) * | 2015-09-30 | 2017-07-11 | Qualcomm Incorporated | Conducting public land mobile network (PLMN) searches in a multi-radio access technology (RAT) environment |
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