CN100452916C - Terminal apparatus and information acquiring system - Google Patents
Terminal apparatus and information acquiring system Download PDFInfo
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- CN100452916C CN100452916C CNB2003801003929A CN200380100392A CN100452916C CN 100452916 C CN100452916 C CN 100452916C CN B2003801003929 A CNB2003801003929 A CN B2003801003929A CN 200380100392 A CN200380100392 A CN 200380100392A CN 100452916 C CN100452916 C CN 100452916C
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Abstract
In the present invention, with respect to content that is predicted to be referred to after moving based on a current position, moving direction and/or moving speed of a terminal apparatus, the terminal apparatus inquires of a communication information area managing section whether a position associated with the content is in a communication area, and when the position is outside the communication area, selects at least one communication section with communication-capable channel quality, and acquires and stores the content predicted to be referred to using the selected communication section. It is thereby possible to refer to the content when a position in response to the content predicted to be referred to is outside a communication-capable area.
Description
Technical field
The present invention relates to a kind of terminal equipment with rendering content, and be equipped with this terminal information to obtain system.
Background technology
Content that will be relevant with the position (hereinafter being called location dependent content) is presented to the technology known (for example, announcing H11-261592 number referring to Japanese publication) of mobile terminal device.
In this technology, mobile terminal device is in order to obtain some location dependent content, this mobile terminal device sends the positional information of mobile terminal device and the term of necessary information, the title of the facility of building and a kind of ferret out for example, server is selected the location dependent content corresponding to this positional information and term, to send to mobile terminal device.
Yet when mobile terminal device is present in the place that radio signal can not arrive this equipment, when promptly being present in outside the zone that can communicate by letter, this equipment neither sends positional information, also received content not.Problem has produced: but the mobile terminal device outside communication zone can not be presented to location dependent content the user of this equipment.
Summary of the invention
The purpose of this invention is to provide a kind of terminal equipment and Information Acquisition System, but it makes it possible to consult the location dependent content in response to the position outside the communication zone.
In the present invention, terminal equipment detects the channel quality of communication component, and the communication component that uses at least one to have the channel quality of the communication of allowing, but obtains the predetermined content that is used for obtaining in communication zone in advance.
Therefore, but terminal equipment obtains the predetermined content of obtaining in advance in communication zone be possible.Like this, even but when consulting described content, be present in outside the communication zone, but because this equipment has received described content in communication zone, so this equipment can be consulted described content.
Description of drawings
Fig. 1 is the view that is used for explaining summary of the present invention;
Fig. 2 is the figure of diagram according to the structure of the Information Acquisition System of the first embodiment of the present invention;
Fig. 3 is the view that illustrates according to the data structure of the contents list of first embodiment;
Fig. 4 is the view that illustrates according to the format sample of the contents list of first embodiment;
Fig. 5 is the view that illustrates according to another example of the contents list of first embodiment;
Fig. 6 is the view that illustrates according to the form of the communication zone information management component information of managing of first embodiment and this information;
Fig. 7 is the flow chart that obtains operation according to the content of the terminal equipment of first embodiment;
Fig. 8 is the figure of details that content is determined the processing of parts that obtains that is used for explaining about according to a second embodiment of the present invention;
Fig. 9 is the figure of details that content is determined the processing of parts that obtains that is used for explaining about according to second embodiment;
Figure 10 is the view that content is determined the selection example of position related content in the parts that obtains that is illustrated in according to second embodiment;
Figure 11 is the figure of structure of the Information Acquisition System of diagram a third embodiment in accordance with the invention;
Figure 12 is the figure of structure of the Information Acquisition System of diagram a fourth embodiment in accordance with the invention; With
Figure 13 describes the position of wireless relay apparatus with the approximate map of explanation according to the processing of the contents list production part of the 4th embodiment.
Embodiment
Below with reference to Fig. 1 summary of the present invention is described.Fig. 1 is the view that is used for explaining summary of the present invention;
Receiving terminal 202 representatives receive the general mobile communication terminal of information, for example cell phone, PDA (personal digital assistant) and auto-navigation system when mobile.Receiving terminal 202 carries out radio communication with (wireless) trunking 201.
In addition, trunking 201 can be broadcast transmission equipment or trunking.Receiving terminal 202 is used for showing from server 210 receiving position related contents 207 by trunking 201.
Wireless communication system comprises general wireless communication system, for example radio-signal system and infrared system.The specific example of radio communication comprises the communication in cell phone, the WLAN etc.
Radio communication can belong to the system except foregoing.In addition, radio communication can comprise a plurality of communicators, for example cell phone, WLAN and infrared communication.In this case, receiving terminal 202 can use at least one the available communicator in a plurality of communicators that receiving terminal 202 had to communicate by letter.
Receiving terminal 202 also has the position detection component of detection position.Receiving terminal 202 is based on the current location chosen position related content that is detected by position detection component, and receives the location dependent content relevant with current location from server 210 and be used for demonstration.
Yet when receiving terminal 202 moved to the position that the wireless signal from trunking 201 can not arrive, terminal equipment 202 can not be from server 210 receiving position relevant informations.
Therefore, but when on the position of receiving terminal 202 in radio communication, whether terminal 202 moves to position that can not radio communication according to the information prediction terminal of current location, moving direction and translational speed.When receiving terminal 202 prediction terminals 202 when move position that can not radio communication, terminal 202 has determined whether location dependent content 208.When determining to have in position that can not radio communication with the location dependent content 208 of consulting, receiving terminal 202 receives location dependent content 208 to be consulted to be stored in the memory unit 203 in advance by trunking 201.
In addition, when receiving terminal 202 when move position that can not radio communication, terminal 202 from memory unit 203 retrievals location dependent content 208 to be consulted, and shows this content 208 based on current location on display unit 206.
Memory unit 203 is general storage mediums, for example disk or semiconductor memory.Display unit 206 is general display unit, for example the display of display image.In addition, display unit 206 can have the loud speaker of output voice.
Specifically describe embodiments of the invention below with reference to the accompanying drawings.
(first embodiment)
Provide be equipped with the description of the Information Acquisition System of terminal equipment according to the first embodiment of the present invention.With reference to figure 2, the structure according to the Information Acquisition System of first embodiment is described at first.Fig. 2 is the structure chart according to the Information Acquisition System of the first embodiment of the present invention.
The content server 101 and the terminal equipment 102 of reception that have distributing contents according to the Information Acquisition System 100 of first embodiment from the content of content server 101 transmissions.
In addition, content server 101 can be the broadcast transmission facility, and communication component 112a to 112c can have broadcast receiving function.In addition, the quantity of communication component 112a to 112c is not limited to 3.
Receiving terminal 102 has contents list management component 103.The 103 organize content tabulation of contents list management component.Contents list is described the address of a plurality of contents.Indication destination, each address to be obtaining content, and is the URL of the address of indication WWW or broadcast channel.
Contents list can be stored in the memory such as CD-ROM and DVD in advance, perhaps can use selectable communication component or broadcasting to obtain from external server, to be stored in the memory such as disk and semiconductor memory.When content list stores was in memory, terminal equipment 102 did not need to use communication or broadcasting to obtain contents list from the outside.When using communication or broadcasting to obtain contents list, contents list can be updated to up-to-date information.
In addition, except the address of content, contents list is also described the positional information relevant with this content.
The data structure of contents list is described below with reference to Fig. 3.As shown in Figure 3, content list stores is many to the address 301 of location dependent content and the geographical location information 302 relevant with this location dependent content.In the example in Fig. 3, contents list is described the data of two contents (content 1 and content 2).
Fig. 4 shows the view of contents list as shown in Figure 3 being used the example of XML (extend markup language) expression.
XML is a standardized language in World Wide Web Consortium, and open in detail in webpage http://www.w3.org.
About the information of location dependent content by＜content (content) and＜/content describe in the part of encapsulation.Particularly, comprise by＜url about the information of location dependent content〉and＜/url encapsulation address 311 and by＜location (position) and＜/location the positional information 312 that encapsulates.
In addition, the contents list of management can be described the priority of content in the terminal equipment 102 and/or consult history in contents list management component 103.Fig. 5 shows another example according to the contents list of first embodiment.
Contents list as shown in Figure 5 is by＜priority (priority)〉and＜/priority〉priority 1 304 is described in the part of encapsulation.
Like this, terminal equipment 102 can be determined before other content to obtain certain content after still being.For example, be high priority by the content that is provided with such as news with high importance and Gao Gengxin frequency, it is possible preferentially upgrading the content with high importance and Gao Gengxin frequency.
In addition, by＜accessDate (visit date)〉and＜/accessDate〉part that encapsulates describes historical information 1305, time and data when for example 102 last time consulted this content by terminal equipment.
Like this, terminal equipment 102 can be determined before other content to obtain certain content after still being.For example, this makes and to obtain this content, to become possibility with this content of sequential update according to this content stores according to consulting in the history ascending order on date.In addition, contents list can have time started and concluding time, to describe the available period of this content, therefore, preferentially obtains this content, makes that the current time is possible in the available period of this content.
In contents list as shown in Figure 5, by＜accessCount (access count)〉and＜/accessCount〉part of encapsulation describes number of times 1306, and wherein said number of times 1306 is number of times that terminal equipment 102 is consulted this content.
Like this, terminal equipment 102 can be determined before other content to obtain certain content after still being.For example, it is possible obtaining this content according to the descending of the number of times of consulting this content so that upgrade this content according to the descending of the number of times of consulting this content.
In addition, contents list is as shown in Figure 5 described the address 1301 and the positional information 1302 of content.
In addition, in contents list as shown in Figure 5, by＜area (zone)〉and＜/area but the part of encapsulation is described the communication information 1303, but but but should the communication information 1303 indicating equipments current be in communication zone or outside communication zone.In the example in Fig. 5, "+" or "-" but but represent equipment respectively in communication zone or outside communication zone.Specifically, when communication component 112a to 112c has the available communicator (for example available common carrier, supplier etc.) of finite population kind, but the communication information 1303 is described.
Refer again to Fig. 2, will describe terminal equipment 102 below.
The example that detects the method for channel quality is such method: any at least one item over time of the wireless signal strength in the communicator of each use of detection communication component 112a to 112c, wireless signal to noise ratio, the error rate of transmission data, effective transmission bandwidth and aforementioned project.
Like this, because channel quality detection parts 105 detect channel quality, terminal equipment 102 can determine whether communication component 112a to 112c can carry out stable communication, promptly determines the stability of communication.
In addition, another example that detects the method for channel quality is such method: imported setting or determined that automatically dedicated channel, public network or internet are used as transmission path by the user, determine perhaps whether transmission path is encrypted.
Like this, determining whether can executive communication and do not leak (tapping on) on transmission path, determines that promptly the fail safe of communication is possible.
In addition, channel quality detection parts 105 use communication stability with any one of the fail safe of communicating by letter or all detect channel quality.
The current location of position detection component 111 sense terminals equipment 102.For example, use GPS (global positioning system) as position detection component 111.Except when beyond the front position, position detection component 111 also detects moving direction and translational speed.
But the information that communication zone information management component 113 management is relevant with the position of radio communication, and whether definite certain position is in communication zone.
For example, the information of effective wireless distances of the installation site of communication zone information management component 113 each wireless relay apparatus of management and each equipment.Communication zone information management component 113 whether in effective wireless distances of the position of wireless relay apparatus, determines whether this position allows radio communication by judging certain position.
In addition, as shown in Figure 5, when in the contents list by＜area and＜/area when but the part of encapsulation is described the communication information 1303, but but but wherein the communication information 1303 indication current locations be in communication zone or outside communication zone, because the communication zone information of management is written in the contents list of management in the contents list management component 103 in communication zone information management component 113, therefore eliminated demand to communication zone information management component 113.
Channel quality detection parts 105 can be by the communication zone information based on management in communication zone information management component 113, judges the current location that detects whether in communication zone in position detection component 111, and determine the stability of communicator.
For example, consider following every kind of situation: communication component 112a to 112c by hardware for example semiconductor chip and circuit form, perhaps these parts are formed by the program that software for example has process and thread.In this case, terminal equipment 102 electrically suspends (suspend) circuit and chip by reducing the function that processing clock limits untapped communication component 112a, 112b or 112c, perhaps suspends the process of software and the processing of thread in software.Like this, untapped by reducing, promptly have communication component 112a, the 112b of low channel quality or the disposal ability of 112c, the power consumption that reduces terminal equipment 102 is possible.
In addition, communication zone information management component 113 can be managed the information except aforesaid information, to determine whether certain position allows radio communication.
Be described in the form of information of managing example in the communication zone information management component 113 and this information below with reference to Fig. 6.
By＜netarea〉and＜/netarea〉part of encapsulation describes the information about two wireless relay apparatus (wireless relay apparatus 1 and 2).
Particularly, as the information of wireless relay apparatus, described by＜location〉and＜/location encapsulation installation site 601 and by＜area and＜/area effective wireless distances 602 of encapsulating.
By＜carrier (operator)〉and＜/carrier〉part of encapsulation describes title 603, the common carrier of its indication management wireless relay apparatus, supplier's etc. title.
In addition, communication zone information management component 113 can be managed in advance the title with the common carrier of terminal equipment 102 sign contracts (contraction), supplier etc., and this title compared with the description in as shown in Figure 6 the title 603, with based on determining with the existing or not existing of contract of terminal equipment 102 whether radio communication is available.
Like this, be possible from only use information about a plurality of common carriers and supplier's communication zone Information Selection ground about the common carrier of having signed contract, supplier etc.Described a plurality of common carrier and supplier can provide the access of the different communication device of utilization such as cell phone and WLAN.
Communication zone information management component 113 can be managed each common carrier and supplier's communication zone information, to be used to select to allow the common carrier and/or the supplier of radio communication.Therefore, each common carrier or supplier's independence dispatch communication area information, and terminal equipment 102 to use a plurality of independently communication zone information to determine whether to allow radio communication be possible.
In addition, can be to the information of each wireless relay apparatus description about communication cost.The form that can be used in information of managing in the communication zone information management component 113 about the information of communication cost is described, and perhaps can provide separately.
By＜bandwidth (bandwidth)〉and＜/bandwidth〉transmission bandwidth 604 of location expression radio communication device of encapsulation.
Communication zone information management component 113 can be selected wireless relay apparatus, and it uses transmission bandwidth 604 to provide the bandwidth of advantage in transmission.
In addition, communication zone information management component 113 can be selected the wireless relay apparatus by communication cost operations such as common carrier, supplier, that provide advantage.
Therefore, in the operator that allows radio communication, it is possible that the user of terminal equipment 102 uses the most cheap common carrier of communication cost or the wideest common carrier of transmission bandwidth.
Refer again to Fig. 2, will describe terminal equipment 102 below.
In addition, communication alternative pack 114 can be selected one or more communication component 112a to 112c.
In addition, when different functions being provided for communication component 112a to 112c, for example cell phone and WLAN, when thereby a plurality of communicator is provided, channel quality detection parts 105 can be by the communication zone information based on management in communication zone information management component 113, judges that current location is whether in communication zone and the detection channel quality.
In this case, in terminal equipment 102, unactual communication component 112a, 112b that uses of communication alternative pack 114 restrictions or the function of 112c.
Obtain content and determine that parts 104 consult in contents list management component 103 contents list of management, and determine the content (acquisition-scheduled content (acquisition-scheduled content)) that expectation is consulted in the future.About the content in the contents list, obtain content and determine that but parts 104 interrogation link quality testing parts 105 current locations are whether in communication zone, when equipment has a plurality of communicator, inquire that also which communicator allows radio communication, and determine whether to obtain the information of current position.
When a plurality of acquisition-scheduled content, obtain content and determine that parts 104 also determine to obtain the order of obtaining of this content.
To content choice and/or obtain the determining description that can content-based tabulation of order and carry out, perhaps obtain content and determine that parts 104 can be provided with certain criteria and determine.
For example, when contents list is described priority, determine content choice and obtain order to be possible based on priority.
Like this, determined that before other content it is possible obtaining certain content after still being.For example, by having the content of high importance and Gao Gengxin frequency, for example news is set to high priority, and it is possible preferentially upgrading the content with high importance and Gao Gengxin frequency.
In addition, when historical information was consulted in the contents list description, based on the time of consulting this content of describing in consulting historical information and the order of number of times, it was possible determining acquisition-scheduled content and obtaining order.Therefore, this makes preferentially to obtain and upgrades the outmoded content of version, and preferentially obtains the content with big number of times of consulting this content and become possibility.
In addition, thus displaying content list and user in selecting content are determined acquisition-scheduled content and obtain order to be possible.
Therefore, the user preferentially to obtain the content that this user wishes with desirable order be possible.
Obtain content and determine that parts 104 can be based on the information of the current location that detects and the positional information of location dependent content in position detection component 111, be chosen in the location dependent content that expectation is consulted when mobile and determine to obtain order.
In this case, obtain content and determine that parts 104 are based on according to translational speed and moving direction from the terminal equipment 102 of the change calculations of the distance of current location and current location, the content of selecting expectation to consult in the future.
Obtain content and determine parts 104 can determine whether allow communication in response to the position of acquisition-scheduled content according to the communication zone information of management in the positional information of the acquisition-scheduled content of describing and the communication zone information management component 113 in contents list.
After moving, when not allowing to communicate by letter, require when allowing communication, to obtain such content in response to the position of acquisition-scheduled content.Therefore, obtain content and determine that parts 104 give this content higher priority.
In addition, obtain content and determine that parts 104 can be corresponding to the channel quality that detects in channel quality detection parts 105, the quantity of the definite content that will obtain.For example, when the wireless signal strength of the stability of representing the current position channel has the trend of increase over time, obtain stability that content determines that parts 104 can judge channel for a long time, and increase the quantity of the content that will obtain.
Whether content is obtained parts 106 inquiry memory management units 107 acquisition-scheduled content and has been stored in the memory unit 1 08, and when corresponding location dependent content has been stored in the memory unit 108, suspends obtaining of content.
When content corresponding has been stored in the memory unit 108, but the version of the content of being stored is older than the version in the content server 101 time, and content is obtained parts 106 can continue to obtain content.
Display control unit spare 109 can be based on additional content, the priority of for example in contents list, describing and consult historical information, perhaps the positional information of describing in the information of the current location that detects in the position-based detection part 111 and the contents list is chosen in content displayed on the display device 110.
Whether display control unit spare 109 inquiry memory management units 107 selected contents are stored in the memory unit 108.When scu 107 was found corresponding location dependent content in memory unit 108, display control unit spare 109 obtained selected content from memory management unit 107, to show on display device 110.
Simultaneously, when memory management unit 107 was not found selected content in memory unit 108, display control unit spare 109 obtained parts 106 by content and receives the corresponding contents that is obtained by memory management unit 107 from content server 101.
In addition, when owing to can not communicate by letter etc., when content was obtained parts 106 and can not be obtained this content, memory management unit 107 notice display control unit spares 109 can not obtain this content.Display control unit spare 109 shows on display device 110 can not obtain this content.
The some contents that become unnecessary in the memory management unit 107 deletion memory units 108.Memory management unit 107 is selected the content of having consulted and has been obtained but content that the content conduct of no longer arranging to consult owing to for example move becomes unnecessary.
Below with reference to the processing that is used to obtain content in the terminal equipment 102 of Fig. 7 description according to first embodiment.
Communication alternative pack 114 in the terminal equipment 102 uses the channel quality that detects among the ST701, selects any (ST702) of the communication component 112a to 112c of permission communication.
The content of obtaining in the terminal equipment 102 determines that parts 104 judge whether to allow any one communication (ST703) of communication component 112a to 112c.
When judging any one communication that does not allow communication component 112a to 112c, obtain content and determine that parts 104 do not obtain content (ST704), and restart the processing among the ST701.
Simultaneously, when in ST703, judging at least one communication that allows communication component 112a to 112c, obtain content and determine that parts 104 obtain contents list (ST705) from contents list management component 103.
Based on this current location, obtain content and determine that the every content of parts 104 from contents list obtain acquisition-scheduled content (ST707).
In addition, in ST707, obtain the priority that content determines that parts 104 can be content-based and consult history and by the user make about the instruction selected rather than based on current location, select acquisition-scheduled content.
During elected majority acquisition-scheduled content, obtain content determine the priority of the content-based position of parts 104, content and content consult history, by the user make about instruction of content choice etc., determine to obtain the order (ST708) of acquisition-scheduled content.
Content is obtained parts 106 and obtain the acquisition-scheduled content of selecting (ST709) according to the order of determining in ST707 in ST708, and restarts the processing of ST701.
Like this, terminal equipment 102 use the communication component 112a to 112c that is allowed to communicate by letter at least one obtain acquisition-scheduled content.
As mentioned above, according to first embodiment, expect that the location dependent content of consulting is possible but in wireless-communication-capable area, obtain in advance.Like this, but even when consulting some location dependent information terminal be present in outside the communication zone, but owing to received this location dependent information in advance at communication zone, terminal can be consulted this location dependent information.In other words, but to consult content in response to the position outside the communication zone be possible.
In addition, according to first embodiment, but but in communication zone, obtain the location dependent content that should outside communication zone, consult so that store, but but and in communication zone, obtain the location dependent content that should in communication zone, consult so that consult.Therefore, but the latest edition of consulting corresponding to the location dependent content of communication zone is possible.
In addition, according to first embodiment, but owing to judge current location whether in communication zone based on the communication zone information of management in communication zone information management component 113, the terminal equipment 102 with a plurality of communication component 112a to 112c does not need electrically to monitor the communications status of described a plurality of communication component 112a to 112c.Therefore, the power consumption of minimizing terminal equipment 102 is possible.
And according to first embodiment, the content of obtaining that provides in terminal equipment 102 is determined to determine to obtain content in the parts 104.Like this, with terminal equipment 102 with the location information notification server, the server retrieves location dependent content is compared with the scheme that sends to terminal equipment, has eliminated terminal equipment 102 and has sent the needs of the current location information of terminals, thereby protected privacy.In addition, server does not need to carry out data retrieval, thereby has reduced the load on the server.And because terminal equipment 102 chosen contents, the change system of selection has realized the flexible service to each terminal equipment 102.In addition, but terminal equipment 102 corresponding to communication environment for example within the communication zone or outside and obtain content in advance, thereby reduced influence to the variation of wireless signal.Has aforesaid advantage.
The contents list of management can be to have only URL and the tabulation that do not have positional information in contents list management component 103.The example of content comprises the music of user's continuous playback when mobile and/or the content of video.In this case, no matter with position detection component 111 in the current-position related information that detects how, obtain content and determine that parts 104 can determine to obtain all the elements in the contents list according to the order in the tabulation or any order.Therefore, but outside communication zone, consult with the incoherent content in position be possible.In addition, contents list management component 103 can produce contents list automatically.For example, by detecting the content that the user consults, parts 103 can produce the tabulation of the represented URL of link in the content.Like this, but mobile terminal device can in communication zone, before the user consults this content, obtain in advance and be predicted to be the subsequent content that will be consulted by the user.
(second embodiment)
The Information Acquisition System that is equipped with terminal equipment according to second embodiment will be described below.Will be with reference to the structure of figure 8 descriptions according to the Information Acquisition System of second embodiment.
Information based on the current location that in position detection component 111, detects, obtain content and determine that but parts 804 inquiry communication zone information management components 113 current locations are whether in wireless-communication-capable area, when this equipment has a plurality of communication component, inquire that also which communication component is allowed to communication, and determine whether to obtain content in current location.When judging that but current location is in wireless-communication-capable area, parts 804 are based on the information of current location, are chosen in the location dependent content that expectation is consulted when mobile.
Determine parts 804 inquiry communication zone information management components 113 about the information relevant but obtain content with communication zone, thereby but the position of the location dependent content that judgement is consulted in response to expectation whether in communication zone.Then, but when the position of the location dependent content of consulting in response to expectation is outside communication zone, obtains content and determine that parts 804 select these location dependent content as the location dependent content that should obtain in current location.
In radio communication, content is obtained parts 806 and is obtained obtaining content from content server 101 and determine the parts 804 location dependent content selected, and by memory management unit 107 with this content stores in memory unit 108.
Whether content is obtained parts 806 inquiry memory management units 107 corresponding location dependent content and has been stored in the memory unit 108, and when corresponding location dependent content has been stored in the memory unit 108, suspends obtaining of location dependent content.In addition, when corresponding location dependent content is stored in the memory unit 108, but the version of the location dependent content of being stored is than the version old times of this location dependent content in the content server 101, and content is obtained parts 806 can continue to obtain content.
Describe below with reference to Fig. 9 and to obtain content and determine processing procedure in the parts 804.Fig. 9 explains about the figure that content is determined the processing details of parts 804 that obtains according to second embodiment.
Obtain content and determine that parts 804 obtain information (ST901) about current location, moving direction and the translational speed of terminal equipment 802 from position detection component 111.Based on the information of being obtained, determine that parts 804 inquiry communication zone information management components 113 current locations are whether in wireless-communication-capable area but obtain content about current location.When judging that but current location is not in wireless-communication-capable area, obtain content and determine parts 804 definite contents of not obtaining.
Simultaneously, but when current location is in wireless-communication-capable area, obtains content and determine that parts 804 obtain contents list (ST902) from contents list management component 103.Based on the information of being obtained about position, moving direction and translational speed, obtain content and determine that parts 804 selections are predicted to be the location dependent content of consulting after terminal equipment 802 moves, and assigned priority (ST903).Then, obtain content determines that parts 804 will be selected in ST903 location dependent content setting and consult alternating content (ST904).
Be described in below with reference to Figure 10 and obtain the selection that content is determined the location dependent content of in the parts 804 expectation being consulted.Figure 10 shows at the view that content is determined the example of chosen position related content in the parts that obtains according to second embodiment.
Obtain content and determine that parts 804 are used for selecting from contents list retrieval some contents relevant with the inside in oval area 510, wherein oval area 510 has current location 501 as a focus, and has another anterior position along moving direction 502 as another focus 503.
Obtain content and determine that parts 804 are according to the distance between the translational speed increase focus 501 and 503.Therefore, when translational speed was higher, selecting more, some contents of wide region were possible.
Obtain content and determine that parts 804 give selected location dependent content assigned priority according to the ascending order from the distance of current location 501.
In addition, determine that the method for chosen position related content and assigned priority is not limited to method above-mentioned in the parts 804 obtaining content, and these parts can be used method chosen content and/or the assigned priority except method above-mentioned.For example, the scope of chosen position relevant information is not necessarily oval, and can be the area that has preset width on the direction perpendicular to moving direction.
In addition, obtain content and determine that parts 804 can determine to consult alternating content based on the arrangement information (schedule information) and the mobile route information that are stored in the terminal equipment 802.Particularly, when terminal equipment 802 is PDA, wherein, the user can be with this user's behavior arrangement (for example, at shinjuku since meeting of 3 in afternoon etc.) be input to this PDA, or when allowing the auto-navigation system of retrieval mobile route, obtain content and determine that parts 804 can be based on user's definite mobile route and/or destinations such as arrangement, and the location dependent content of selecting mobile route and/or destination periphery is as consulting alternating content.Therefore, based on the arrangement of future behaviour, the chosen position related content is possible as consulting alternating content.
But obtain content determine parts 804 inquiry communication zone information management components 113 current locations with in ST904, obtain consult the relevant position of alternating content whether in communication zone (ST905).
Particularly, but when consulting alternating content when relevant with position in the communication zone, receiving this when arriving this position, to consult alternating content be possible, thereby, obtain content and determine that parts 804 reduce the priority of this content in the obtaining of current location.
Simultaneously, but when consulting alternating content when relevant with position outside the communication zone, can not when arriving this position, receive the described alternating content of consulting, therefore, but need preferentially during terminal equipment 802 is in time cycle in the communication zone, to obtain this content in advance.
Therefore, obtain the location dependent content that content determines that parts 804 will need to obtain in advance and be defined as acquisition-scheduled content (ST907).
In addition, but be used to judge that whether consult alternating content is not limited to consult the associated position of alternating content in the position in communication zone.For example, when equipment was consulted location dependent content before the associated position of this equipment in-position related content, but judge that position before the associated position of location dependent content whether in communication zone, is used as predetermined position of consulting.
In addition, use the position on the mobile route of predicting according to the current location and the moving direction of terminal equipment 802 rather than use predetermined position of consulting, but judge whether such position is possible in communication zone.
Content is obtained parts 806 and is obtained continuously obtaining content and determine in the parts 804 some acquisition-scheduled content (ST908) of selecting.Particularly, content is obtained parts 806 and is consulted contents list, obtains the address of acquisition-scheduled content, and uses the address that is obtained to obtain each bar acquisition-scheduled content.
Obtain content and determine that parts 804 obtain information from position detection component 111 at interval with preset time, and definite acquisition-scheduled content is used for upgrading.
In addition, after parts 804 obtain information from position detection component 111 and detect the moving of preset distance, obtain content and determine that parts 804 can determine and upgrade acquisition-scheduled content.
In addition, content is obtained parts 806 can select a content from some acquisition-scheduled content, also finishes the acquisition-scheduled content of selecting another number after obtaining this content, and select a content from the acquisition-scheduled content of this another number.Therefore, obtain content and more neatly the response position of moving be possible, in other words, though when moving long apart from the time, terminal also can be obtained the content that is suitable for the position that this terminal moves to.
As mentioned above, according to second embodiment, even when but the position of the location dependent content of consulting in response to expectation is outside communication zone, but also might in communication zone, obtain the content that this expectation is consulted in advance.Therefore, but to consult the content relevant with position outside the communication zone be possible.
In addition, according to second embodiment, but but in communication zone, obtain the location dependent content that should outside communication zone, consult so that store, but but and in communication zone, obtain the location dependent information that should in communication zone, consult so that consult.But the latest edition of therefore consulting corresponding to the location dependent content of communication zone is possible.
(the 3rd embodiment)
Below with reference to the Information Acquisition System of Figure 11 description according to third embodiment of the invention.
Wireless strengths detection part 1105 detects the communication intensity in the radio communication in the current position of terminal equipment 1102.Wireless strengths detection part 1105 detects the wireless strengths of indicating channel stability, for example, and the electric field strength of the radio signal when in radio communication, using radio signal, and the infra-red intensity when in radio communication, using infrared ray.Wireless strengths detection part 1105 can detect the error rate or effective transmission bandwidth of wireless signal to noise ratio, transmission data.Like this, it is possible using the method with high precision detection channel quality.
The history of the wireless strengths that 1105 storages of wireless strengths detection part are detected.Parts 1105 are the last wireless strengths that detects of storage only, perhaps the wireless strengths of all detections is stored with the position of detecting this intensity place.
After finishing the location dependent content of obtaining in response to current location, content is determined parts 1104 inquiry wireless strengths detection parts 1105 relevant wireless strengths, and when obtaining enough wireless strengths, enlarge the scope of retrieve position related content, with the chosen position related content and obtain this content.In other words, obtain content and determine that parts 1104 select the location dependent content in response to the position of current location periphery, i.e. the location dependent content that expectation is consulted in the future corresponding to wireless strengths.
Therefore, be channel quality and to obtain some obtainable contents be possible corresponding to wireless strengths.Therefore, use the ability of communicator effectively, and obtain the location dependent content in response to the position of current location periphery definitely, i.e. the location dependent content that expectation is consulted in the future is possible.
In addition, based on the variation of wireless strengths, determine that parts 1104 can judge that terminal equipment 1102 is just to have entered or will leave communication zone but obtain content, and determine whether to obtain location dependent content based on judged result.
Particularly, the last wireless strengths history of wireless strengths detection part 1105 storages when wireless strengths increases, but judge that terminal has just entered communication zone, and the communication of determining is allowed to the long relatively time.On the other hand, when wireless strengths reduces, but wireless strengths detection part 1105 judgement terminals will be left communication zone, and definite communication only is allowed to the short time.
Then, obtain content and determine the time of parts 1104 according to determined permission communication, the number of the definite location dependent content that will obtain, and select this location dependent content.Therefore, might improve obtaining the accuracy of determining of location dependent content.
In addition, obtain content and determine that parts 1104 can calculate the transmission required time of this location dependent content, and based on the time of being calculated, determine whether to obtain this location dependent content according to the size of location dependent content and the transmission bandwidth of communicator.
Particularly, obtain content and determine that parts 1104 use the variation of wireless strengths to obtain to allow the time of communication, the time that time of the permission communication that obtained and transmission location related content is required compares, when the required time of the time ratio of the permission that obtained communication and transmission location related content is grown, obtain this location dependent content.Therefore, the accuracy of determining that improves obtaining location dependent content is possible.
In addition, can describe the size of this content in the contents list that will be read out, it is possible perhaps might only consulting described size to content server 101.And wireless strengths detection part 1105 can detect the transmission bandwidth of communicator and read this bandwidth.
As mentioned above, according to the 3rd embodiment, corresponding to the wireless strengths of current position, make to determine whether to obtain location dependent content that the location dependent content that i.e. expectation is consulted in the future becomes possibility in response to the position of current location periphery in the current time.By like this obtaining and store the location dependent content that expectation as much as possible is consulted in the future in advance, even but when the position of the content of consulting in response to expectation outside communication zone, also might consult such content.
In addition, in the 3rd embodiment, with the same in a second embodiment, but when outside communication zone the time, obtaining such content in response to the position that is predicted to be the location dependent content of consulting in the future in advance.Therefore, might more effectively obtain the desired position related content.
(the 4th embodiment)
The fourth embodiment of the present invention is described such situation: content list server is provided, and it produces the contents list corresponding to the position of terminal equipment, to send to this terminal equipment.
The Information Acquisition System of a fourth embodiment in accordance with the invention is described below with reference to Figure 12.In addition, give the parts described specify with aforementioned content in identical label so that the descriptions thereof are omitted.
When request sends location dependent content, position, moving direction and the translational speed of position detection component 111 sense terminals equipment 1202, and content list request parts 1204 send to content list server 1201 with the project that is detected with sending request.
In response to this, content list server 1201 receives the request to contents list from terminal equipment 1202 in content list request receiving-member 1205.Then, content list server 1201 produces the contents list of the content that will send to terminal equipment 1202 in contents list production part 1206.This content can comprise that message is with notice terminal equipment 1202.
When the positional information of content list request receiving-member 1205 receiving terminal apparatus 1202, moving direction and translational speed, based on the positional information that is received, moving direction and translational speed, but contents list production part 1206 is assumed that and will be consulted by terminal 1202 and in response to the location dependent information of the position outside the communication zone from database 1207 retrieval, and produces the contents list of being made up of the location dependent content of being retrieved.Then, content list server 1201 sends to terminal equipment 1202 with the contents list that is produced.
In response to this, terminal equipment 1202 is the received content tabulation in contents list management 1203.Then, obtain the content that content determines that parts 104 select expectation to consult from the contents list that is received, and determine to obtain the order of this content.
Content is obtained parts 106 and is received in from content server 101 and obtains content and determine the parts 104 acquisition-scheduled content determined.
Like this, but terminal equipment 1202 obtains when mobile that expectation is consulted and in response to the location dependent content of the position outside the communication zone.
The method that produces contents list in the contents list production part 1206 is described below with reference to Figure 13.Figure 13 describes the suitable map of the position of wireless relay apparatus with the processing of explanatory content list producing parts 1206.
Suppose that but each circle among Figure 13 is the border of communication zone, and the center of circle is the position of wireless relay apparatus.But the outside of circle is illustrated in outside the communication zone, and terminal equipment 1202 can not be communicated by letter at this place.
The current location of also supposing terminal equipment 1202 is 1301, and equipment 1202 moves along the direction 1302 of arrow, and this content is relevant with optional position among Figure 13.Each area of expression of A to F among Figure 13.For example, but regional A is illustrated in the inside of circle of communication zone at current location 1301 places of terminal equipment 1202.But area B, C, D and E outside communication zone, but and regional F in communication zone.
Since terminal equipment 1202 along from the position 1301 to the position 1302 direction moves, therefore, can consult relevant with the inside of regional A, B, C and F respectively some location dependent content.Then, the contents list production part 1206 in the content list server 1201 will be respectively be defined as alternating content in response to the location dependent content of regional A, B, C and F.
Because the location dependent content in the regional F can receive after terminal equipment 1202 enters this area, so contents list production part 1206 need not described such content in contents list.Therefore, contents list production part 1206 has been eliminated the location dependent content relevant with the inside of regional F from the alternating content of contents list.
Like this, contents list production part 1206 uses the some location dependent content relevant with the inside of regional A to C to produce contents list.Particularly, this contents list comprises many address and positional informations to the location dependent content relevant with the inside of regional A, B or C.
In addition, consider the variation of moving direction during moving, contents list production part 1206 can be described the location dependent content for regional D and F in contents list.
In addition, content data base 1207 can be managed the location dependent content of each content, and all retrieve to produce contents list at every turn, perhaps can manage the location dependent content in the big or small less contents list in each area (A, B, C...), and merge the less tabulation of this size to produce contents list.
In addition, content list server 1201 can be a wireless relay apparatus.In this case, but but 1207 of databases need management for the communication zone of this wireless relay apparatus and a plurality of at least contents in the area in the surrounding area outside the communication zone.
And contents list production part 1206 can produce contents list based on arrangement information that receives from terminal equipment 1202 and mobile route information.
Particularly, when terminal equipment 1202 is PDA, wherein the user can be with this user's behavior arrangement (for example, at shinjuku since meeting of 3 in afternoon etc.) be input to this PDA, or when allowing the auto-navigation system of retrieval mobile route, terminal equipment sends to content list server 1201 with such information, and content list server 1201 is added the location dependent content of the mobile route that received and/or destination periphery in the contents list production part 1206 contents list.Thereby content list server 1202 is arranged predictive content according to the behavior in future, and to produce contents list with higher accuracy be possible.
As mentioned above, according to the 4th embodiment, when terminal equipment 1202 motions, but terminal equipment 1202 can obtain the tabulation of the location dependent content of will consult from content list server 1201 outside communication zone.Then, but terminal equipment 1202 receives the location dependent content that will be consulted in communication zone.Like this, but the location dependent content notice terminal equipment 1202 that server 1201 will will be consulted outside communication zone owing to moving of terminal, thus, but terminal equipment 1202 does not need to determine the location dependent content that will consult owing to move outside communication zone.As a result, might reduce load on the terminal equipment 1202.In addition, eliminated and the needs of particular device are provided for terminal equipment 1202, therefore, general portable terminal has been used as terminal equipment 1202.
The Japanese patent application that this application is submitted to based on the Japanese patent application of submitting on October 8th, 2002 2002-295217 number with on September 9th, 2003 2003-316744 number clearly is herein incorporated its full content by reference.
Industrial usability
But but the present invention by in communication zone, receive in advance be desirably in consult outside the communication zone in Hold, but for example in response to the location dependent content of the position outside the communication zone, terminal device (is for example moved Moving terminal) but and Information Acquisition System also can outside communication zone, consult content.
Claims (32)
1. terminal equipment comprises:
Contents list management component, the contents list of the one or more addresses of the content that its managed storage will be obtained;
One or more wireless communication units;
The channel quality detection parts, the channel quality of each of the described wireless communication unit of its detection current location;
The communication alternative pack, it uses the described channel quality of the current location detect in described channel quality detection parts, select to have at least one of described communication component of the channel quality of the communication of allowing;
Obtain content and determine parts, determine at least one scheduled acquisition-scheduled content that is used for obtaining in its content from be stored in described contents list; And
Content is obtained parts, and it uses the described address relevant with described acquisition-scheduled content, obtains described definite acquisition-scheduled content at least one of selected described communication component.
2. according to the terminal equipment of claim 1, also comprise:
Position detection component, it detects current location; And
The communication zone information management component, but its management is about the communication zone information of the communication position of each the described wireless communication unit in predetermined area, wherein based on this communication zone information, whether described channel quality detection parts detect that each described current location that can detect of described wireless communication unit communicates in described position detection component.
3. according to the terminal equipment of claim 2, wherein said terminal equipment is controlled, and is used for reducing each disposal ability of the described wireless communication unit that can not communicate by letter.
4. according to the terminal equipment of claim 1, the wherein said content of obtaining is determined parts based on the instruction by user's input, determines whether at least one of the order obtaining described acquisition-scheduled content and obtain described acquisition-scheduled content.
5. according to the terminal equipment of claim 1, wherein said contents list is described the priority relevant with the address of this content, and based on this priority, the described content of obtaining determines that parts determine whether to obtain at least one of described acquisition-scheduled content and the order of obtaining described acquisition-scheduled content.
6. according to the terminal equipment of claim 2, wherein, described contents list is described the predetermined area inner positional information relevant with the address of described content, and based on this positional information, the described content of obtaining determines that parts determine whether to obtain at least one of described acquisition-scheduled content and the order of obtaining described acquisition-scheduled content.
7. according to the terminal equipment of claim 6, wherein, based on described communication zone information, the described content of obtaining determines parts judge whether the position of the positional information in the described predetermined area of describing allows communication in described contents list, thereby determines whether to obtain in response to the content of the positional information in the described predetermined area and at least one of the order of obtaining this content.
8. according to the terminal equipment of claim 6, wherein, based on the moving direction of described terminal equipment and at least one of translational speed, the described content of obtaining determines that parts determine whether to obtain at least one of this content and the order of obtaining this content.
9. according to the terminal equipment of claim 1, wherein, described contents list describe address with described content relevant consult historical information, and consult historical information based on this, the described content of obtaining determines that parts determine whether at least one of the order obtaining content and obtain this content.
10. according to the terminal equipment of claim 1, wherein, described channel quality detection parts detect the channel quality of each described wireless communication unit by detecting the stability of each described wireless communication unit.
11. terminal equipment according to claim 10, wherein, described channel quality detection parts detect described stability based on the error rate of wireless signal strength, wireless signal strength noise ratio, transmission data, the effectively error rate, effective each at least one in over time of transmission bandwidth of transmission bandwidth and wireless signal strength, wireless signal strength noise ratio, transmission data.
12. according to the terminal equipment of claim 1, wherein, described channel quality detection parts can communicate by letter and the fail safe of not leaking each described wireless communication unit by detection, detect the described channel quality of each described wireless communication unit.
13. according to the terminal equipment of claim 1, wherein, the described content of obtaining is determined the channel quality of parts based on each the described wireless communication unit that detects in described channel quality detection parts, determine the number of acquisition-scheduled content.
14. an information getting method is used to comprise the device of one or more wireless communication units, this method comprises:
The contents list of the one or more addresses of the content that management will be obtained;
The channel quality of each of the described wireless communication unit of detection current location;
Use the described channel quality of detected current location, select to have at least one of described communication component of the channel quality of the communication of allowing;
Determine at least one scheduled acquisition-scheduled content that is used for obtaining in the content from be stored in described contents list; And
Use and described definite relevant address of acquisition-scheduled content, in selected described communication component, obtain described definite acquisition-scheduled content.
15. an Information Acquisition System, wherein terminal equipment obtains the relevant content in position that send from server, interior with being scheduled to the area, and wherein this server comprises:
The positional information receiving-member, it receives the position of described terminal equipment; And
The contents list transmit block, it is according to the described position that receives in described positional information receiving-member, but will in response to outside communication zone, be desirably in the described content of consulting the position of described content after moving and be defined as acquisition-scheduled content, and at least one pair of address relevant with described acquisition-scheduled content and the contents list of position have been stored in generation, sending described terminal equipment to, and
This terminal equipment comprises:
Position detection component, it detects the position of described terminal equipment;
The positional information transmit block, it sends to described server with the described position of being detected;
The contents list receiving-member, it receives the described contents list that sends from described server; And
Content is obtained parts, its use be stored in described contents list in the relevant address of described acquisition-scheduled content, obtain described acquisition-scheduled content.
16. according to the Information Acquisition System of claim 15, the described positional information transmit block of wherein said terminal equipment is to the request of described server transmission to described contents list.
17. according to the Information Acquisition System of claim 16, wherein said server comprises the contents list receiver to the described request of described contents list of reception from described terminal equipment.
18. Information Acquisition System according to claim 15, the described position detection component of wherein said terminal equipment detects the moving direction and the translational speed of described terminal equipment, and described positional information transmit block sends to described server with the moving direction and the translational speed of described terminal equipment.
19. according to the Information Acquisition System of claim 15, wherein said acquisition-scheduled content comprises that about the described terminal equipment when terminal can't be with described server communication at least one expect the content of following position.
20. Information Acquisition System according to claim 19, wherein said contents list transmit block determine described terminal equipment at least one expect following position which be positioned at described terminal equipment can't with the zone of described server communication, and identification is expected the acquisition-scheduled content that following position is relevant with definite at least one.
21. a terminal equipment comprises:
Position detection component, the position of its sense terminals equipment;
The positional information transmit block, it sends to server with the described position of being detected;
The contents list receiving-member, it receives the contents list that sends from described server; And
Content is obtained parts, its use be stored in described contents list in the relevant address of acquisition-scheduled content, obtain acquisition-scheduled content, but this acquisition-scheduled content in response to outside communication zone, be desirably in the position of consulting described content after mobile.
22. according to the terminal equipment of claim 21, wherein said positional information transmit block is to the request of described server transmission to described contents list.
23. terminal equipment according to claim 21, wherein said position detection component detects the moving direction and the translational speed of described terminal equipment, and described positional information transmit block sends to described server with the moving direction and the translational speed of described terminal equipment.
24. according to the terminal equipment of claim 21, wherein said acquisition-scheduled content comprises that about the described terminal equipment when terminal can't be with described server communication at least one expect the content of following position.
25. an Information Acquisition System, wherein terminal equipment obtains the relevant content in position that send from server, interior with being scheduled to the area, and wherein this server comprises:
The positional information receiving-member, it receives the positional information of described terminal equipment; And
The contents list transmit block, it is based on described positional information identification acquisition-scheduled content, this acquisition-scheduled content is to expect the content of following position about at least one of the described terminal equipment when terminal can't be with described server communication, and the contents list of at least one address He at least one position relevant with described acquisition-scheduled content has been stored in generation, sending described terminal equipment to, and
This terminal equipment comprises:
Position detection component, it detects the position of described terminal equipment;
The positional information transmit block, it sends to described server with the position of being detected;
The contents list receiving-member, it receives the described contents list that sends from described server; And
Content is obtained parts, its use be stored in described contents list in the relevant described address of described acquisition-scheduled content, obtain described acquisition-scheduled content.
26. according to the Information Acquisition System of claim 25, the described positional information transmit block of wherein said terminal equipment is to the request of described server transmission to described contents list.
27. according to the Information Acquisition System of claim 26, wherein said server comprises the contents list receiver to the described request of described contents list of reception from described terminal equipment.
28. Information Acquisition System according to claim 25, the described position detection component of wherein said terminal equipment detects the moving direction and the translational speed of described terminal equipment, and described positional information transmit block sends to described server with the moving direction and the translational speed of described terminal equipment.
29. Information Acquisition System according to claim 25, wherein said contents list transmit block determine described terminal equipment at least one expect following position which be positioned at described terminal equipment can't with the zone of described server communication, and identification is expected the acquisition-scheduled content that following position is relevant with definite at least one.
30. a terminal equipment comprises:
Position detection component, it detects current location;
Contents list management component, its managed storage the address of at least one pair of content that will obtain and the contents list of position;
Acquisition-scheduled content is determined parts, the described current location that it detects based on described position detection component, retrieval and determine at least one described content from the contents list of described contents list management component management, but described content response in outside communication zone, be desirably in the position of consulting described content after moving; And
Content is obtained parts, and it uses relevant described address to obtain described definite content.
31. terminal equipment according to claim 30, wherein said position detection component detects the moving direction and the translational speed of described terminal equipment, described acquisition-scheduled content determines that parts are based in described current location, described moving direction, the described translational speed at least one, retrieval and determine at least one described content from the contents list of described contents list management component management, but described content response in outside communication zone, be desirably in the position of consulting described content after moving.
32. terminal equipment according to claim 30, wherein acquisition-scheduled content is determined parts retrieval and determine at least one described content from the contents list of described contents list management component management, described content response after described terminal equipment moves, can't carry out position for the communication of obtaining content.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002295217 | 2002-10-08 | ||
| JP295217/2002 | 2002-10-08 | ||
| JP316744/2003 | 2003-09-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1692668A CN1692668A (en) | 2005-11-02 |
| CN100452916C true CN100452916C (en) | 2009-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003801003929A Expired - Lifetime CN100452916C (en) | 2002-10-08 | 2003-10-07 | Terminal apparatus and information acquiring system |
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| CN (1) | CN100452916C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4783179B2 (en) * | 2006-03-07 | 2011-09-28 | 株式会社日立製作所 | Area management system |
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| WO1999059363A1 (en) * | 1998-05-11 | 1999-11-18 | Carnegie Mellon University | Method and apparatus for incorporating environmental information for mobile communications |
| WO2001031945A1 (en) * | 1999-10-28 | 2001-05-03 | Telcordia Technologies, Inc. | System and method for energy-efficient transmission power control, routing and transmission scheduling in wireless communication networks |
| CN1294468A (en) * | 1999-10-28 | 2001-05-09 | 日本电气株式会社 | Mobile radio communicating system |
| EP1209930A2 (en) * | 2000-11-21 | 2002-05-29 | DaimlerChrysler AG | Route-based communication planning architecture and method for wireless communication |
| US20020085516A1 (en) * | 2000-12-28 | 2002-07-04 | Symbol Technologies, Inc. | Automatic and seamless vertical roaming between wireless local area network (WLAN) and wireless wide area network (WWAN) while maintaining an active voice or streaming data connection: systems, methods and program products |
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2003
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999059363A1 (en) * | 1998-05-11 | 1999-11-18 | Carnegie Mellon University | Method and apparatus for incorporating environmental information for mobile communications |
| WO2001031945A1 (en) * | 1999-10-28 | 2001-05-03 | Telcordia Technologies, Inc. | System and method for energy-efficient transmission power control, routing and transmission scheduling in wireless communication networks |
| CN1294468A (en) * | 1999-10-28 | 2001-05-09 | 日本电气株式会社 | Mobile radio communicating system |
| EP1209930A2 (en) * | 2000-11-21 | 2002-05-29 | DaimlerChrysler AG | Route-based communication planning architecture and method for wireless communication |
| US20020085516A1 (en) * | 2000-12-28 | 2002-07-04 | Symbol Technologies, Inc. | Automatic and seamless vertical roaming between wireless local area network (WLAN) and wireless wide area network (WWAN) while maintaining an active voice or streaming data connection: systems, methods and program products |
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| CN1692668A (en) | 2005-11-02 |
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