CN102239715B

CN102239715B - Scanning method, system and terminal

Info

Publication number: CN102239715B
Application number: CN200980147439.4A
Authority: CN
Inventors: 许明霞; 王萦明; 唐春梅
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2009-04-29
Filing date: 2009-04-29
Publication date: 2013-12-18
Anticipated expiration: 2029-04-29
Also published as: WO2010124462A1; CN102239715A

Abstract

A scanning method, system and terminal are provided. The method includes: determining that part of the cell which the terminal belongs to is covered by the target access technology network according to the received coverage indicating information (101); generating a scan determination information according to the coverage value which is about the coverage of the access technology network for the cell and indicated by the coverage indicating information (102); when the scanning time of the target access technology network coming, scanning the target access technology network according to the scan determination information (103). The power waste of the terminal locating at the boundary of the overlap coverage area of two networks is saved by the embodiments of this invention. It can be avoided that the terminal in the cell loses the chance to switch to a better network and gets dropped from the network when moving to a neighbor area that is not covered by the current serving access technology network. The abrupt increase of the network load and the increase of the access delay caused by the simultaneous initiations of handover requests by the terminals in the cell in the overlap coverage area of two networks can be avoided. And the communication quality is advanced.

Description

Scan method, system and terminal

Technical field

The embodiment of the present invention relates to the mobile communication technology field, particularly scan method, system and terminal.

Background technology

For example, when the network of two kinds of different access technologies and different coverages is present in system simultaneously: the covering level that the covering of two nets vertically is stacked scene and two nets intersects scene, can have the overlapping coverage area of two nets.Access network device can issue the covering indication information of the network that whether has another kind of access technology according to the network of another kind of access technology respectively to the whole terminals in the coverage condition Xiang Gai community of its lower each community, terminal can be scanned by the network to another kind of access technology according to the above-mentioned covering indication information received, to determine whether to be switched to the network of another kind of access technology.

In realizing process of the present invention, the inventor finds that in prior art, at least there are the following problems: when access network device issues the covering indication information of the network that has another kind of access technology to the community on overlapping coverage area border, be positioned at above-mentioned community and by the terminal of the network coverage of another kind of access technology, the scanning of the network of another kind of access technology do not caused the waste of power consumption of terminal; When access network device issues the covering indication information of the network that does not have another kind of access technology to the community on overlapping coverage area border, be positioned at above-mentioned community and the network of another kind of access technology do not scanned and caused terminal to lose the chance that is switched to better network by the terminal of the network coverage of another kind of access technology; When access network device issues the covering indication information of the network that does not have another kind of access technology to the community on overlapping coverage area border, the adjacent domain of Qie Gai community is not by the network coverage of the access technology of current service, while being positioned at the adjacent domain of fast mobile terminal Dao Gai community of above-mentioned community, both there is no the network service of access technology of current service in this terminal, the network of another kind of access technology is not scanned again, cause the net that falls of terminal, affected communication quality; Because the terminal that is positioned at the overlapping coverage area community is that simultaneously according to the covering indication information of the network of received another kind of access technology, the network to another kind of access technology is scanned, if exist a plurality of terminal scannings to the network information all meet switching condition, above-mentioned a plurality of terminal will be initiated handover request simultaneously, cause the load increase suddenly of network and the increase of access delay, affected communication quality.

Summary of the invention

The embodiment of the present invention provides scan method, system and terminal, be positioned at the power consumption of community terminal on the overlapping coverage area border of two nets in order to saving, the community terminal of avoiding being positioned at the overlapping coverage area border of two nets loses the chance that is switched to better network, avoid being arranged in the community fast mobile terminal on overlapping coverage area border of two nets to by the adjacent domain of the network coverage of the access technology of current service, not fallen net, avoid the load increase suddenly of network and the increase of access delay, improve communication quality.

The embodiment of the present invention provides a kind of scan method, comprising:

According to the covering indication information received, determine that the affiliated community part of terminal is by the network coverage of target access technology, this covering indication information can indicate the affiliated community of terminal by the coverage values of the network coverage of target access technology, and this coverage values is the number between 0～1;

The described community indicated according to described covering indication information produced the scanning discriminative information by the coverage values of the network coverage of described target access technology;

When the scanning of the network of described target access technology arrives constantly, according to described scanning discriminative information, the network of described target access technology is scanned.

The embodiment of the present invention also provides a kind of terminal, comprising:

The first identification module, for the covering indication information according to receiving, determine that the affiliated community part of terminal is by the network coverage of target access technology, this covering indication information can indicate the affiliated community of terminal by the coverage values of the network coverage of target access technology, and this coverage values is the number between 0～1;

Random module, produced the scanning discriminative information for the described community indicated according to described covering indication information by the coverage values of the network coverage of described target access technology;

The first scan module, while constantly arriving for the scanning of the network of described target access technology, according to described scanning discriminative information, scanned the network of described target access technology.

The embodiment of the present invention provides a kind of scanning system again, comprising:

The first access network device, for sending the covering indication information, described covering indication information indicates described community by the coverage values of the network coverage of described target access technology, and this coverage values is the number between 0～1;

First terminal, the covering indication information sent for described the first access network device according to receiving, determine that the affiliated community part of described first terminal is by the network coverage of target access technology, the described community indicated according to described covering indication information produced the scanning discriminative information by the coverage values of the network coverage of described target access technology, when the scanning of the network of described target access technology arrives constantly, according to described scanning discriminative information, the network of described target access technology is scanned.

The embodiment of the present invention provides another kind of scan method, comprising:

If indicated scanning information produces the scanning discriminative information that the network to described target access technology is scanned according to described covering indication information, the described community indicated according to described covering indication information, by the coverage values of the network coverage of described target access technology, obtains the scan period of the network of described target access technology;

When the scanning of the network of described target access technology arrives constantly, the network of described target access technology is scanned.

The embodiment of the present invention also provides another kind of terminal, comprising:

The second identification module, for the covering indication information according to receiving, determine that the affiliated community part of terminal is by the network coverage of target access technology, this covering indication information can indicate the affiliated community of terminal by the coverage values of the network coverage of target access technology, and this coverage values is the number between 0～1;

The second acquisition module, for if according to described covering indication information, indicated scanning information produces the scanning discriminative information that the network to described target access technology is scanned, the described community indicated according to described covering indication information, by the coverage values of the network coverage of described target access technology, obtains the scan period of the network of described target access technology;

The second scan module, while constantly arriving for the scanning of the network of described target access technology, scanned the network of described target access technology.

The embodiment of the present invention provides another kind of scanning system again, comprising:

The second access network device, for sending the covering indication information, described covering indication information indicates described community by the coverage values of the network coverage of described target access technology, and this coverage values is the number between 0～1;

The second terminal, the covering indication information sent for described the second access network device according to receiving, determine that the affiliated community part of described the second terminal is by the network coverage of target access technology, if indicated scanning information produces the scanning discriminative information that the network to described target access technology is scanned according to described covering indication information, the described community indicated according to described covering indication information is by the coverage values of the network coverage of described target access technology, obtain the scan period of the network of described target access technology, when the scanning of the network of described target access technology arrives constantly, network to described target access technology is scanned.

As shown from the above technical solution, community under the covering indication information indicating terminal that the embodiment of the present invention issues by access network device is by the coverage values of the network coverage of target access technology, or say the probable value cover existed, make terminal to produce the scanning discriminative information according to above-mentioned coverage values, when scanning arrives constantly, network according to this scanning discriminative information to the target access technology is scanned, thereby saved the power consumption of the community terminal on the overlapping coverage area border that is positioned at two nets, the community terminal of having avoided being positioned at the overlapping coverage area border of two nets loses the chance that is switched to better network, avoided being arranged in the community fast mobile terminal on overlapping coverage area border of two nets to by the adjacent domain of the network coverage of the access technology of current service, not fallen net, avoided because load that the terminal of the community of the overlapping coverage area that is positioned at two nets is initiated the network that handover request causes increases suddenly and the increase of access delay simultaneously, improved communication quality, community under the covering indication information indicating terminal that the embodiment of the present invention issues by access network device is by the coverage values of the network coverage of target access technology, or say the probable value cover existed, make terminal to obtain the scan period of the network of target access technology according to above-mentioned coverage values, network to the target access technology when scanning arrives is constantly scanned, thereby saved the power consumption of the community terminal on the overlapping coverage area border that is positioned at two nets, the community terminal of having avoided being positioned at the overlapping coverage area border of two nets loses the chance that is switched to better network, avoided being arranged in the community fast mobile terminal on overlapping coverage area border of two nets to by the adjacent domain of the network coverage of the access technology of current service, not fallen net, avoided because load that the terminal of the community of the overlapping coverage area that is positioned at two nets is initiated the network that handover request causes increases suddenly and the increase of access delay simultaneously, improved communication quality.

The accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The schematic flow sheet of a kind of scan method that Fig. 1 provides for the embodiment of the present invention one;

The schematic flow sheet of a kind of scan method that Fig. 2 provides for the embodiment of the present invention two;

The schematic flow sheet of a kind of scan method that Fig. 3 provides for the embodiment of the present invention three;

The schematic flow sheet of a kind of scan method that Fig. 4 provides for the embodiment of the present invention four;

The structural representation of a kind of terminal that Fig. 5 provides for the embodiment of the present invention five;

The structural representation of a kind of scanning system that Fig. 6 provides for the embodiment of the present invention six;

The schematic flow sheet of the another kind of scan method that Fig. 7 provides for the embodiment of the present invention seven;

The schematic flow sheet of the another kind of scan method that Fig. 8 provides for the embodiment of the present invention eight;

The schematic flow sheet of the another kind of scan method that Fig. 9 provides for the embodiment of the present invention nine;

The structural representation of the another kind of terminal that Figure 10 provides for the embodiment of the present invention ten;

The structural representation of the another kind of scanning system that Figure 11 provides for the embodiment of the present invention 11.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.

The schematic flow sheet of a kind of scan method that Fig. 1 provides for the embodiment of the present invention one, as shown in Figure 1, the scan method of the present embodiment can comprise the following steps:

The covering indication information that step 101, basis receive, determine that the affiliated community part of terminal is by the network coverage of target access technology;

Step 102, the above-mentioned community indicated according to above-mentioned covering indication information are produced the scanning discriminative information by the coverage values of the network coverage of target access technology;

When the scanning of the network of step 103, target access technology arrives constantly, according to above-mentioned scanning discriminative information, the network of target access technology is scanned.

Scanning in the present embodiment constantly can be the scanning moment in Event triggered, can also be the scanning moment in the scan period.

Covering indication information in the present embodiment is that the access network device in the network of the source access technology of current service sends to terminal, and this covering indication information can indicate the affiliated community of terminal by the coverage values of the network coverage of target access technology.Terminal can be determined community under it by the situation of the network coverage of target access technology according to above-mentioned coverage values, Ruo Gai community part is by the network coverage of target access technology, so when the scanning of the network of target access technology arrives constantly, terminal produces the one scan discriminative information at random according to above-mentioned coverage values, coverage values is larger, and the probability scanned is larger.For example: " 1 " means scanning, and " 0 " means not scan, and coverage values is larger, and the probability that produces at random " 1 " is larger, and vice versa.Terminal is according to the random above-mentioned scanning discriminative information produced, network to the target access technology is scanned, saved the power consumption of the community terminal on the overlapping coverage area border that is positioned at two nets, the community terminal of having avoided being positioned at the overlapping coverage area border of two nets loses the chance that is switched to better network, avoided being arranged in the community fast mobile terminal on overlapping coverage area border of two nets to by the adjacent domain of the network coverage of the access technology of current service, not fallen net, avoided because load that the terminal of the community of the overlapping coverage area that is positioned at two nets is initiated the network that handover request causes increases suddenly and the increase of access delay simultaneously, improved communication quality.

The scan method of the present embodiment goes for the scanning scene of any two networks in handoff procedure.As mainstream technology of future generation, more current world-leading code division multiple accesss (Code-Division Multiple Access, be called for short CDMA)/high speed grouped data (High rate packet data, abbreviation HRPD) operator determines progressively to be upgraded to Long Term Evolution (Long Term Evolution from existing HRPD network, abbreviation LTE) evolved universal mobile communication system land radio access web (Evolved Universal Mobile Telecommunication System Territorial Radio Access Network is called for short E-UTRAN).In the process of network upgrade, owing to there being two kinds of networks of HRPD and E-UTRAN simultaneously, wherein E-UTRAN partly covers, and HRPD covers fully, and some terminal uses need to carry out with the HRPD-LTE dual-mode terminal roaming of whole network.

It is example that the following embodiment of the present invention be take E-UTRAN and the network coexisted scene of HRPD, for example: the covering level that the covering of two nets vertically is stacked scene and two nets intersects scene, carry out Idle state switching and the front scanning process of activated state switching, wherein the Idle state switching is also referred to as cell reselection.All supposing in the following embodiment of the present invention that terminal is current resides in the community that a HRPD network (source access technology) covers, and this terminal determines whether scanning according to the covering indication information of the community of the HRPD network coverage community that E-UTRAN (target access technology) covers.

The schematic flow sheet of a kind of scan method that Fig. 2 provides for the embodiment of the present invention two, as shown in Figure 2, the scan method of the present embodiment can comprise the following steps:

Step 201, terminal determine that according to the covering indication information received the community part under terminal is covered by E-UTRAN;

Covering indication information wherein can add the situation that supplementary position, 1 to N position illustrates the E-UTRAN of this overlapping covering in community outside scan bits in the prior art, and wherein N is more than or equal to 1 integer.Cover indication information can be respectively with two kinds of these communities of form indicating terminal by the coverage condition of E-UTRAN:

A, form one

Cover the supplementary position that indication information comprises scan bits and at least one bit, the coverage values that this community of indication, supplementary position of above-mentioned scan bits and at least one bit is covered by E-UTRAN, this coverage values is the number between 0～1.

In this kind of form, (for example: the coverage values of the scan bits of a bit) indicating altogether this community to be covered by E-UTRAN has like this N+1 bit and indicates coverage condition with original scan bits to supplement position.Complete 1 if, illustrate that this community is all covered by E-UTRAN; Full 0, illustrate that this community is not covered by E-UTRAN all over if; Number between full 0 and complete 1, illustrate the probability that this community is covered by E-UTRAN if.The implication of certain above-mentioned value and its expression defines also passable conversely.

Below take N as 1 being example, and at this moment scan bits+supplement position to have 4 kinds of indicating status, can be 11,10,01,00 respectively.Four kinds of indicating status are expressed as follows respectively:

11 communities are all covered by E-UTRAN;

10 community 2/3 parts are covered by E-UTRAN;

01 community 1/3 part is covered by E-UTRAN;

00 community is not covered by E-UTRAN all over.

In sum, the access network device in terminal place HRPD network coverage Xia community can indicate the coverage values that this community is covered by E-UTRAN.

B, form two

Cover indication information and comprise scan bits, whether this scan bits indicates this community to be covered by E-UTRAN, if this scan bits indicates this community to be covered by E-UTRAN, so above-mentioned covering indication information also comprises the supplementary position of at least one bit, the coverage values that this community of indication, supplementary position of above-mentioned at least one bit is covered by E-UTRAN, this coverage values is the number between 0～1.

In this kind of form, if scan bits is full 0, illustrate that this community is not covered by E-UTRAN all over, the coverage values that need not indicate altogether this community to be covered by E-UTRAN with supplementary position in this case; If scan bits is 1, this situation need to be supplemented the coverage values that position indicates this community to be covered by E-UTRAN, and total like this N bit indicated coverage condition: be complete 1 if supplement position, illustrate that this community is all covered by E-UTRAN; Number between full 0 or full 0 and complete 1, illustrate the probability that this community is covered by E-UTRAN if.The implication of certain above-mentioned value and its expression defines also passable conversely.

Below take N as 3 being example, at this moment scan bits and supplement the indicated indicating status in position and be expressed as follows respectively:

0 community is not covered by E-UTRAN all over;

1111 communities are all covered by E-UTRAN;

1110 communities 7/8 are covered by E-UTRAN;

1101 communities 6/8 are covered by E-UTRAN;

1100 communities 5/8 are covered by E-UTRAN;

1011 communities 4/8 are covered by E-UTRAN;

1010 communities 3/8 are covered by E-UTRAN;

1001 communities 2/8 are covered by E-UTRAN;

1000 communities 1/8 are covered by E-UTRAN.

In sum, the access network device in HRPD network coverage Xia community, terminal place can, when indicating this community and whether being covered by E-UTRAN, illustrate the coverage values covered by E-UTRAN.

Step 202, terminal are obtained the scan period of the E-UTRAN set in advance;

When the scanning of step 203, E-UTRAN arrives constantly, the coverage values that terminal is covered by E-UTRAN according to the indicated Gai of above-mentioned covering indication information community produces the scanning discriminative information;

In this step, terminal can have a variety of according to the method that covers coverage values that the indicated Gai of indication information community covered by E-UTRAN and produce the scanning discriminative information, only introduces wherein a kind of here:

Terminal generate one 0～1 between equally distributed random number;

When if above-mentioned random number is less than or equal to above-mentioned coverage values, produce the scanning discriminative information scanned;

When if above-mentioned random number is greater than above-mentioned coverage values, produce the scanning discriminative information do not scanned.

For example: " 1 " scanning discriminative information for being scanned means scanning; " 0 " scanning discriminative information for not scanned, mean not scan.When the coverage rate covered by E-UTRAN is larger, the random corresponding raising of probability meeting that produces the scanning discriminative information scanned, vice versa.

Step 204, terminal, according to above-mentioned scanning discriminative information, are scanned E-UTRAN.

In the present embodiment, if terminal produces the scanning discriminative information that does not carry out scanning according to above-mentioned covering indication information, terminal need not be carried out scan operation to E-UTRAN so; If terminal produces the scanning discriminative information scanned according to above-mentioned covering indication information, terminal is carried out scan operation to E-UTRAN so.

In the present embodiment, the access network device in the HRPD network of current service sends and covers indication information to terminal, indicates the coverage values that the affiliated community of terminal is covered by E-UTRAN.Terminal can be determined the situation that the community under it is covered by E-UTRAN according to above-mentioned coverage values, Ruo Gai community part is covered by E-UTRAN, when the scanning of the E-UTRAN got arrives constantly, terminal produces the one scan discriminative information at random according to above-mentioned coverage values so.Terminal is according to the random above-mentioned scanning discriminative information produced, E-UTRAN is scanned, saved the power consumption of the community terminal on the overlapping coverage area border that is positioned at two nets, the community terminal of having avoided being positioned at the overlapping coverage area border of two nets loses the chance that is switched to better network, avoided being arranged in the community fast mobile terminal on overlapping coverage area border of two nets to by the adjacent domain of the HRPD network coverage of current service, not fallen net, avoided because load that the terminal of the community of the overlapping coverage area that is positioned at two nets is initiated the network that handover request causes increases suddenly and the increase of access delay simultaneously, improved communication quality.

The schematic flow sheet of a kind of scan method that Fig. 3 provides for the embodiment of the present invention three, as shown in Figure 3, the scan method of the present embodiment can comprise the following steps:

Step 301, terminal determine that according to the covering indication information received the community part under terminal is covered by E-UTRAN;

A, form one

11 communities are all covered by E-UTRAN;

10 community 2/3 parts are covered by E-UTRAN;

01 community 1/3 part is covered by E-UTRAN;

00 community is not covered by E-UTRAN all over.

B, form two

In this kind of form, if scan bits is 1, illustrate that this community is covered by E-UTRAN all over, the coverage values that need not indicate altogether this community to be covered by E-UTRAN with supplementary position in this case; If scan bits is 0, this situation need to be supplemented the coverage values that position indicates this community to be covered by E-UTRAN, and total like this N bit indicated coverage condition: if supplement position for full 0, illustrate that this community is not covered by E-UTRAN all over; If supplement position and be other interior value of codomain scope (complete 1 or full 0 and complete 1 between number), the probability that this community is covered by E-UTRAN is described.The implication of certain above-mentioned value and its expression defines also passable conversely.

Below take N as 2 being example, at this moment scan bits and supplement the indicated indicating status in position and be expressed as follows respectively:

1 community is all covered by E-UTRAN;

011 community 3/4 is covered by E-UTRAN;

010 community 2/4 is covered by E-UTRAN;

001 community 1/4 is covered by E-UTRAN;

000 community is not covered by E-UTRAN all over.

The scan period that the coverage values that step 302, terminal are covered by E-UTRAN according to the indicated Gai of above-mentioned covering indication information community is obtained E-UTRAN;

The scan period of E-UTRAN in this step comprises three scanning configuration parameters of duration length (PostMaskDuration) after duration length (PreMaskDuration) before mask, mask duration length (MaskDuration), mask, the duration sum that scan period is exactly above-mentioned three parameters, finally only have MaskDuration to be used for scanning the network of HRPD network other access technology in addition, and two-part being used for worked in the HRPD network in addition, the initial time of scan period is that the initial time of MaskDuration scans constantly.In the present embodiment, different coverage values is corresponding different a set of scanning configuration parameter set in advance respectively, can also be corresponding a set of set in advance for calculating scanning configuration parameter expression formula, as long as in can ensuring coverage Zhi Di community the scan period of terminal be greatly.For example: the coverage values that community is covered by E-UTRAN is X, and the scanning configuration parameter of three E-UTRAN in this step can be expressed as follows:

PreMaskDuration is 1/X*2^K, and unit is time slot;

The setting of PostMaskDuration and upper same (certainly also can be different);

MaskDuration can arrange the constant irrelevant with coverage values, for example: 2 time slots.

If there is the scan period T of a regulation in E-UTRAN, can adjust K, so that the multiple that the value of " PreMaskDuration+PostMaskDuration+MaskDuration " is scan period T or scan period T gets final product; If there is not the scan period T of a regulation in E-UTRAN, can adjust K according to other constraintss so.

The scanning configuration parameter of E-UTRAN in this step is corresponding a set of numerical value or the expression-form of coverage values covered by E-UTRAN with the covering indicated Gai of indication information community.When terminal receives the covering indication information sent from the access network device in the HRPD network of current service, the coverage values covered by E-UTRAN according to the indicated Gai of this covering indication information community is obtained corresponding scanning configuration parameter, when guaranteeing high coverage values the scan period short, during low coverage values, the scan period is long.

When the scanning of step 303, E-UTRAN arrives constantly, the coverage values that terminal is covered by E-UTRAN according to the indicated Gai of above-mentioned covering indication information community produces the scanning discriminative information;

The explanation of this step can be referring to the related description of step 203 in the embodiment of the present invention two.

Step 304, terminal, according to above-mentioned scanning discriminative information, are scanned E-UTRAN.

With determine through consultation above-mentioned three scanning configuration parameters in the prior art scheme and compare, in the present embodiment, be that the covering indication information (approximately being less than 8 bits) that access network device issues has replaced three negotiation values of totally 48 bits by a shorter broadcasted values, saved overhead bit; In the present embodiment, can change length and the scan period of each other network of scan period interscan simultaneously, and the negotiation value in the prior art scheme can only, by the length that decides each other network of scan period interscan, can not, with deciding the scan period, increase flexibility.

The schematic flow sheet of a kind of scan method that Fig. 4 provides for the embodiment of the present invention four, as shown in Figure 4, the scan method of the present embodiment can comprise the following steps:

Step 401, terminal determine that according to the covering indication information received the community part under terminal is covered by E-UTRAN;

The explanation of this step can be referring to the related description of step 301 in step 201 in the embodiment of the present invention two and the embodiment of the present invention three.

The scan period that the coverage values that step 402, terminal are covered by E-UTRAN according to the indicated Gai of above-mentioned covering indication information community and scanning times obtain E-UTRAN;

Terminal is between a preliminary sweep cycle and maximum scan cycle, can determine the scan period of scanning each time (scanning may because of some reason failure) according to coverage values and the scanning times that carried out, the above-mentioned scan period of scanning each time is coverage values and the function of the scanning times that carried out.For example: suppose that the preliminary sweep cycle is 2T, the maximum scan cycle is 20T, carries out the scanning for the first time of T duration after first scanning arrives constantly, and now the scan period is 2T; If scan for the first time unsuccessfully, under inferior to behind the 2T/50%-T=3T interval, then scan for the second time, sweep time, length was still T, the scan period becomes 4T (scanning duration T+ sweep spacing 3T); If scan for the second time unsuccessfully, under inferior to behind the 4T/50%-T=7T interval, then scan for the third time, sweep time, length was T, the scan period becomes 8T, by that analogy, if failure always, until the scan period increase to 20T.

When the scanning of step 403, E-UTRAN arrives constantly, the coverage values that terminal is covered by E-UTRAN according to the indicated Gai of above-mentioned covering indication information community produces the scanning discriminative information;

Step 404, terminal, according to above-mentioned scanning discriminative information, are scanned E-UTRAN.

In the present embodiment, terminal has adopted the processing mode of progressively keeping out of the way to get the scan period of E-UTRAN, and the sweep spacing of this scan period increases gradually, has reduced the probability of terminal scanning failure, thereby has saved the power consumption of terminal.

It should be noted that: terminal can be included but not limited to according to the covering indication information of the E-UTRAN of the access network device broadcast transmission in the HRPD network scanning constantly or the adjustment of scan period, terminal can also utilize this information to control the interoperability between the network of some other two or more access technologies, for example: from the HRPD network redirection to E-UTRAN, execution mode and embodiments of the invention are identical, be that under high coverage condition, terminal is easily initiated to be redirected, vice versa.In addition, terminal, when using this to cover indication information, can also match with the property parameters of some terminals further, for example: the access grade of terminal, make the terminal that access grade is high obtain higher random number detection probability value, vice versa.

It should be noted that: for aforesaid each embodiment of the method, for simple description, therefore it all is expressed as to a series of combination of actions, but those skilled in the art should know, the present invention is not subject to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.

In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, there is no the part described in detail in certain embodiment, can be referring to the associated description of other embodiment.

The structural representation of a kind of terminal that Fig. 5 provides for the embodiment of the present invention five, as shown in Figure 5, the terminal of the present embodiment can comprise the first identification module 51, random module 52 and the first scan module 53.Wherein, the first identification module 51 determines that according to the covering indication information received the affiliated community part of terminal is by the network coverage of target access technology, when the scanning of the network of above-mentioned target access technology arrives constantly, the random module 52 above-mentioned community indicated according to above-mentioned covering indication information produced the scanning discriminative information by the coverage values of the network coverage of above-mentioned target access technology, the first scan module 53 is according to above-mentioned scanning discriminative information, and the network of above-mentioned target access technology is scanned.

A kind of terminal that in the method for the invention described above embodiment mono-, the embodiment of the present invention two, in terminal, the embodiment of the present invention three, in terminal and the embodiment of the present invention four, the function of terminal all can be provided by the present embodiment realizes.

In the present embodiment, the received covering indication information of the first identification module is that access network device in the network of the source access technology of current service sends to terminal, and this coverings indication information can indicate the affiliated community of terminal by the coverage values of the network coverage of target access technology.The first identification module can be determined community under it by the situation of the network coverage of target access technology according to above-mentioned coverage values, Ruo Gai community part is by the network coverage of target access technology, so random module produces the one scan discriminative information at random according to above-mentioned coverage values, for example: " 1 " means scanning, " 0 " means not scan, coverage values is larger, and the probability that produces at random " 1 " is larger, and vice versa.When the scanning of the network of target access technology arrives constantly, the first scan module is according to the random above-mentioned scanning discriminative information produced, network to the target access technology is scanned, saved the power consumption of the community terminal on the overlapping coverage area border that is positioned at two nets, the community terminal of having avoided being positioned at the overlapping coverage area border of two nets loses the chance that is switched to better network, avoided being arranged in the community fast mobile terminal on overlapping coverage area border of two nets to by the adjacent domain of the network coverage of the access technology of current service, not fallen net, avoided because load that the terminal of the community of the overlapping coverage area that is positioned at two nets is initiated the network that handover request causes increases suddenly and the increase of access delay simultaneously, improved communication quality.

Further, the terminal of the present embodiment can further include the first acquisition module (not shown), for the scan period of the network that obtains in advance above-mentioned target access technology.

The structural representation of a kind of scanning system that Fig. 6 provides for the embodiment of the present invention six, as shown in Figure 6, the scanning system of the present embodiment can comprise the first access network device 61 and first terminal 62.Wherein:

The first access network device 61, for sending the covering indication information, above-mentioned covering indication information indicates above-mentioned community by the coverage values of the network coverage of above-mentioned target access technology;

First terminal 62, the covering indication information sent for above-mentioned the first access network device according to receiving determines that the affiliated community part of first terminal 62 is by the network coverage of target access technology, when the scanning of the network of above-mentioned target access technology arrives constantly, the above-mentioned community indicated according to above-mentioned covering indication information produced the scanning discriminative information by the coverage values of the network coverage of above-mentioned target access technology, according to above-mentioned scanning discriminative information, the network of above-mentioned target access technology is scanned.

First terminal 62 in a kind of scanning system that in the method for the invention described above embodiment mono-, the embodiment of the present invention two, in terminal, the embodiment of the present invention three, in terminal and the embodiment of the present invention four, the function of terminal all can be provided by the present embodiment is realized.

Further, the first terminal 62 of the present embodiment can also obtain the scan period of the network of above-mentioned target access technology in advance.

The schematic flow sheet of the another kind of scan method that Fig. 7 provides for the embodiment of the present invention seven, as shown in Figure 7, the scan method of the present embodiment can comprise the following steps:

The covering indication information that step 701, basis receive, determine that the affiliated community part of terminal is by the network coverage of target access technology;

If step 702 scanning information indicated according to above-mentioned covering indication information produces the scanning discriminative information that the network to the target access technology is scanned, the above-mentioned community indicated according to above-mentioned covering indication information, by the coverage values of the network coverage of target access technology, obtains the scan period of the network of target access technology;

When the scanning of the network of step 703, target access technology arrives constantly, the network of target access technology is scanned.

Covering indication information in the present embodiment is that the access network device in the network of the source access technology of current service sends to terminal, and this covering indication information can indicate the affiliated community of terminal by the coverage values of the network coverage of target access technology.If the terminal scanning information indicated according to above-mentioned covering indication information produces the scanning discriminative information that the network to above-mentioned target access technology is scanned, terminal can get according to above-mentioned coverage values the scan period of the network of target access technology, lower with the ensuring coverage value, sweep time is shorter, and the scan period is longer.Terminal is according to the obtained scan period, network to the target access technology is scanned, saved the power consumption of the community terminal on the overlapping coverage area border that is positioned at two nets, the community terminal of having avoided being positioned at the overlapping coverage area border of two nets loses the chance that is switched to better network, avoided being arranged in the community fast mobile terminal on overlapping coverage area border of two nets to by the adjacent domain of the network coverage of the access technology of current service, not fallen net, avoided because load that the terminal of the community of the overlapping coverage area that is positioned at two nets is initiated the network that handover request causes increases suddenly and the increase of access delay simultaneously, improved communication quality.

The scan method of the present embodiment goes for the scanning scene of any two networks in handoff procedure.As mainstream technology of future generation, some world-leading CDMA/HRPD operators determine progressively to be upgraded to from existing HRPD network the E-UTRAN of LTE at present.In the process of network upgrade, owing to there being two kinds of networks of HRPD and E-UTRAN simultaneously, wherein E-UTRAN partly covers, and HRPD covers fully, and some terminal uses need to carry out with the HRPD-LTE dual-mode terminal roaming of whole network.

The schematic flow sheet of the another kind of scan method that Fig. 8 provides for the embodiment of the present invention eight, as shown in Figure 8, the scan method of the present embodiment can comprise the following steps:

Step 801, terminal determine that according to the covering indication information received the community part under terminal is covered by E-UTRAN;

A, form one

11 communities are all covered by E-UTRAN;

10 community 2/3 parts are covered by E-UTRAN;

01 community 1/3 part is covered by E-UTRAN;

00 community is not covered by E-UTRAN all over.

B, form two

1 community is all covered by E-UTRAN;

011 community 3/4 is covered by E-UTRAN;

010 community 2/4 is covered by E-UTRAN;

001 community 1/4 is covered by E-UTRAN;

000 community is not covered by E-UTRAN all over.

If the step 802 terminal scanning information (be scan bits indicated scanning information) indicated according to above-mentioned covering indication information produces the scanning discriminative information that E-UTRAN is scanned, the scan period that the coverage values that terminal is covered by E-UTRAN according to the indicated Gai of above-mentioned covering indication information community is obtained E-UTRAN, the above-mentioned scan period comprises the sweep time of scanning E-UTRAN and the sweep time of scanning the HRPD network;

PreMaskDuration is 1/X*2^K, and unit is time slot;

When the scanning of step 803, E-UTRAN arrives constantly, E-UTRAN is scanned.

With determine through consultation above-mentioned three scanning configuration parameters in the prior art scheme and compare, in the present embodiment, be that the covering indication information (approximately being less than 8 bits) that access network device issues has replaced three negotiation values of totally 48 bits by a shorter broadcasted values, saved overhead bit; In the present embodiment, can change length and the scan period of each other network of scan period interscan simultaneously, thereby can be so that coverage values be lower, sweep time is shorter, scan period is longer, and the negotiation value in the prior art scheme can only, by the length that decides each other network of scan period interscan, can not, with deciding the scan period, increase flexibility.

The schematic flow sheet of the another kind of scan method that Fig. 9 provides for the embodiment of the present invention nine, as shown in Figure 9, the scan method of the present embodiment can comprise the following steps:

Step 901, terminal determine that according to the covering indication information received the community part under terminal is covered by E-UTRAN;

The explanation of this step can be referring to the related description of step 801 in the embodiment of the present invention eight.

If the step 902 terminal scanning information (be scan bits indicated scanning information) indicated according to above-mentioned covering indication information produces the scanning discriminative information that E-UTRAN is scanned, the scan period that the coverage values that terminal is covered by E-UTRAN according to the indicated Gai of above-mentioned covering indication information community and scanning times obtain E-UTRAN;

When the scanning of step 903, E-UTRAN arrives constantly, E-UTRAN is scanned.

The structural representation of the another kind of terminal that Figure 10 provides for the embodiment of the present invention ten, as shown in figure 10, the terminal of the present embodiment can comprise the second identification module 1001, the second acquisition module 1002 and the second scan module 1003.Wherein, the second identification module 1001, according to the covering indication information received, determines that the affiliated community part of terminal is by the network coverage of target access technology; If the second acquisition module 1002 scanning information indicated according to above-mentioned covering indication information produces the scanning discriminative information that the network to above-mentioned target access technology is scanned, the above-mentioned community indicated according to above-mentioned covering indication information is by the coverage values of the network coverage of above-mentioned target access technology, obtain the scan period of the network of above-mentioned target access technology, the above-mentioned scan period comprises the sweep time of the network of sweep time of the network that scans above-mentioned target access technology and scan source access technology; When the scanning of the network of the above-mentioned target access technology of the second scan module 1003 arrives constantly, the network of above-mentioned target access technology is scanned.

The another kind of terminal that in the method for the invention described above embodiment seven, the embodiment of the present invention eight, in terminal and the embodiment of the present invention nine, the function of terminal all can be provided by the present embodiment realizes.

In the present embodiment, the received covering indication information of the second identification module is that access network device in the network of the source access technology of current service sends to terminal, and this coverings indication information can indicate the affiliated community of terminal by the coverage values of the network coverage of target access technology.The second identification module can be determined community under it by the situation of the network coverage of target access technology according to above-mentioned coverage values, Ruo Gai community part is by the network coverage of target access technology, if the second acquisition module scanning information indicated according to above-mentioned covering indication information produces the scanning discriminative information that the network to above-mentioned target access technology is scanned so, can get according to above-mentioned coverage values the scan period of the network of target access technology, lower with the ensuring coverage value, sweep time is shorter, and the scan period is longer.The scan period that the second scan module obtains according to the second acquisition module, when the scanning of the network of target access technology arrives constantly, network to the target access technology is scanned, saved the power consumption of the community terminal on the overlapping coverage area border that is positioned at two nets, the community terminal of having avoided being positioned at the overlapping coverage area border of two nets loses the chance that is switched to better network, avoided being arranged in the community fast mobile terminal on overlapping coverage area border of two nets to by the adjacent domain of the network coverage of the access technology of current service, not fallen net, avoided because load that the terminal of the community of the overlapping coverage area that is positioned at two nets is initiated the network that handover request causes increases suddenly and the increase of access delay simultaneously, improved communication quality.

The structural representation of the another kind of scanning system that Figure 11 provides for the embodiment of the present invention 11, as shown in figure 11, the scanning system of the present embodiment can comprise the second access network device 1101 and the second terminal 1102.Wherein:

The second access network device 1101, for sending the covering indication information, above-mentioned covering indication information indicates above-mentioned community by the coverage values of the network coverage of above-mentioned target access technology;

The second terminal 1102, the covering indication information sent for above-mentioned the second access network device 1101 according to receiving, determine that the affiliated community part of above-mentioned the second terminal 1102 is by the network coverage of target access technology, if indicated scanning information produces the scanning discriminative information that the network to above-mentioned target access technology is scanned according to above-mentioned covering indication information, the above-mentioned community indicated according to above-mentioned covering indication information is by the coverage values of the network coverage of above-mentioned target access technology, obtain the scan period of the network of above-mentioned target access technology, the above-mentioned scan period comprises the sweep time of the network of sweep time of the network that scans above-mentioned target access technology and scan source access technology, when the scanning of the network of above-mentioned target access technology arrives constantly, network to above-mentioned target access technology is scanned.

The second terminal 1102 in the another kind of scanning system that in the method for the invention described above embodiment seven, the embodiment of the present invention eight, in terminal and the embodiment of the present invention nine, the function of terminal all can be provided by the present embodiment realizes.

One of ordinary skill in the art will appreciate that: realize that the hardware that all or part of step of said method embodiment can be relevant by program command completes, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.

Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: its technical scheme that still can put down in writing aforementioned each embodiment is modified, or part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.

Claims

1. a scan method, is characterized in that, comprising:

2. method according to claim 1, is characterized in that, described covering indication information comprises scan bits and supplementary position, and described scan bits and the described community of indication, described supplementary position are by the coverage values of the network coverage of described target access technology.

3. method according to claim 1, it is characterized in that, described covering indication information comprises scan bits, whether described scan bits indicates described community by the network coverage of target access technology, if described scan bits indicates described community by the network coverage of described target access technology, described covering indication information also comprises supplementary position, and the described community of indication, described supplementary position is by the coverage values of the network coverage of described target access technology.

4. method according to claim 1, is characterized in that, the described described community indicated according to described covering indication information produced the scanning discriminative information by the coverage values of the network coverage of described target access technology and comprise:

Equally distributed random number between generating one 0～1;

By the relation between the coverage values of the network coverage of described target access technology, produce the scanning discriminative information according to described random number and the indicated described community of described covering indication information.

5. according to claim 1,2,3 or 4 described methods, it is characterized in that, also comprise: obtain in advance the scan period of the network of described target access technology, the described scan period comprises the sweep time of the network of sweep time of the network that scans described target access technology and scan source access technology.

6. method according to claim 5, is characterized in that,

The described scan period is a constant; Perhaps

The function that the described scan period is described coverage values and/or last scan period.

7. a terminal, is characterized in that, comprising:

8. terminal according to claim 7, is characterized in that, also comprises: the first acquisition module, and for the scan period of the network that obtains in advance described target access technology.

9. a scanning system, is characterized in that, comprising:

The first access network device, for sending the covering indication information, described covering indication information indicating cell is by the coverage values of the network coverage of target access technology, and this coverage values is the number between 0～1;

10. system according to claim 9, is characterized in that, described first terminal is also for scan period of the network that obtains in advance described target access technology.

11. a scan method, is characterized in that, comprising:

12. method according to claim 11, is characterized in that, described covering indication information comprises scan bits and supplementary position, and described scan bits and the described community of indication, described supplementary position are by the coverage values of the network coverage of described target access technology.

13. method according to claim 11, it is characterized in that, described covering indication information comprises scan bits, whether described scan bits indicates described community by the network coverage of target access technology, if described scan bits indicates described community by the network coverage of described target access technology, described covering indication information also comprises supplementary position, and the described community of indication, described supplementary position is by the coverage values of the network coverage of described target access technology.

14. according to claim 11,12 or 13 described methods, it is characterized in that, the described described community indicated according to described covering indication information is by the coverage values of the network coverage of described target access technology, the scan period of obtaining the network of described target access technology comprises: the described community indicated according to described covering indication information, by the coverage values of the network coverage of described target access technology and scanning times, obtains the scan period of the network of described target access technology.

15. a terminal, is characterized in that, comprising:

16. a scanning system, is characterized in that, comprising:

The second access network device, for sending the covering indication information, described covering indication information indicating cell is by the coverage values of the network coverage of target access technology, and this coverage values is the number between 0～1;