CN1606377A - Mobile communication terminal, base station, communication system and method - Google Patents
Mobile communication terminal, base station, communication system and method Download PDFInfo
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- CN1606377A CN1606377A CN 200410095108 CN200410095108A CN1606377A CN 1606377 A CN1606377 A CN 1606377A CN 200410095108 CN200410095108 CN 200410095108 CN 200410095108 A CN200410095108 A CN 200410095108A CN 1606377 A CN1606377 A CN 1606377A
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Abstract
In the mobile communication terminal for performing radio communication with the base station, a CSID notified from the base station is received (S11), a service status notification bit indicative of a service status of the relevant base station is extracted from the received CSID (S12), and it is decided on the basis of the extracted service status notification bit whether a base station, capable of providing a currently utilized communication service is present (S13). When there is no base station, the communication service is automatically switched to the other communication service at hand-over (S15-S16).
Description
Technical field
The present invention relates to the use radio communication communicates between travelling carriage and base station mobile communication terminal, base station, communication system and communication means.
Background technology
In mobile communication system such as PHS (personal handyphone system), mobile phone, except being provided for the communication service that voice call uses (hereinafter referred to as service), also provide the various services that are used for data communication.In PHS,, provide PIAFS (PHS Internet Access Forum Standard as the communication mode that data communication is used; Pi Afu) wait the service of line-switching type or the service of packets of information crossover.
This service every year is all improving, in base station or travelling carriage, by upgrade hardware or software wait seek corresponding with it.In the base station, because a plurality of base stations sequential update can not provide the part serving base station so exist sometimes.Therefore, during the handover of the base station that travelling carriage connects switching (hand over), will exist in service out of use situation behind handover of using before the handover.
The serving base station of 32Kbit/s in the data communication services of data communication services that 32Kbit/s only can be provided and 64Kbit/s, under situation that these two kinds of serving base station mixing existence can be provided, exist to the system of the base station execution handover of the data communication services of the 64Kbit/s of retrieval in advance can be provided.For example please refer to the spy and open flat 11-308656 communique.In the system that this communique is put down in writing, by monitoring that control channel signals detects the service that peripheral base station can provide, simultaneously, detect receiving intensity, select base station as the handover destination.
In above-mentioned existing systems, the service state that the message signale of use regulation comes informing base station.But the base station can only send the message that is used for the notification service state off and on.This is because except service state, also has the cause of the many message that must notify, therefore, can only send these message in the compartment of terrain.
In this case, mobile communication terminal passes through continuously the above notification data that receives from this base station of certain certain hour, thereby can learn the service state of this base station at the very start.
But, switching under the situation of the base station (carrying out handover) that is connected along with moving of user, limited and be used to spent time of base station of selecting the next one to connect.Thus, in using the mode that needs long message for the service state of confirming a base station, exist the time of interrupting connection elongated, in addition, also have inappropriate situation of cutting off connection with situation.
Summary of the invention
The present invention In view of the foregoing makes, purpose is to provide a kind of can make the mobile communication terminal in the service area judge immediately whether the base station can provide service, reduce the instantaneous interruption time of the communication that causes owing to handover, mobile communication terminal, base station, communication system and the communication means of the time of delay of continuing when reducing transceiver.
In order to address the above problem, the 1st feature of the present invention be a kind of and the base station between carry out the travelling carriage of radio communication, comprising: receive from the mechanism of the announcement information of base station notice; From the announcement information that is received, extract the mechanism of the service status information of the service state of representing this base station; According to the service state notice position that extracts, judge whether to exist the mechanism of the base station that the 1st communication agency in the current use can be provided; And under the situation that is judged as the base station that does not have to provide the 1st communication agency, the mechanism that carries out when handover, being used for communication agency is automatically switched to the control of the 2nd communication agency that can use.
The 2nd feature of the present invention be a kind of and the base station between carry out the travelling carriage of radio communication, comprising: receive mechanism by the CSID (base station IDs) of base station notice; The service state that extracts the service state of this base station of expression from the CSID that is received is notified the mechanism of position; According to the service state notice position that extracts, judge whether to exist the mechanism of the base station that the 1st communication agency in the current use can be provided; And under the situation that is judged as the base station that does not have to provide the 1st communication agency, be judged as before existence can provide the base station of the 1st communication agency, stop to utilize the mechanism of the communication of the 1st communication agency.
The of the present invention the 3rd is characterised in that, described service state notice position, and whether expression can provide or can not provide packet communication mode or non-packet communication mode.
The of the present invention the 4th is characterised in that, described the 1st communication agency and described the 2nd communication agency are packet communication mode and non-packet communication mode, perhaps are non-packet communication mode and packet communication mode.
The of the present invention the 5th is characterised in that, under the situation of wanting to utilize described the 1st communication agency to begin to communicate by letter, receive the service state notice position of residing base station of this TV station and peripheral base station thereof, be connected to service that the 1st communication agency can be provided and receiving sensitivity preferably on the base station.
The 6th feature of the present invention is a kind of mobile communication system of carrying out the travelling carriage of radio communication between base station and the base station that possesses, wherein, the service status information that comprises the service state of represent this base station in the announcement information that the base station sends travelling carriage has as the mobile communication terminal of travelling carriage: the mechanism that receives the CSID that is notified by the base station; The service state that extracts the service state of this base station of expression from the CSID that is received is notified the mechanism of position; According to the service state notice position that extracts, judge whether to exist the mechanism of the base station that the 1st communication agency in the current use can be provided; And under the situation that is judged as the base station that does not have to provide the 1st communication agency, the mechanism of the control of the 2nd communication agency that can use when carrying out that communication agency automatically switched to handover.
The 7th feature of the present invention be a kind of and travelling carriage between carry out the base station of radio communication, wherein,, travelling carriage is sent the announcement information of the service state notice position of having set the service state of representing this base station as the position of the regulation of CSID (base station IDs).
The 8th feature of the present invention is a kind of base station of having used, and carry out the communication means of the travelling carriage of radio communication between the base station, wherein, in the announcement information that the base station sends travelling carriage, comprise the service status information of representing this base station services state, the mobile communication terminal that is used as travelling carriage receives the CSID that is notified by the base station, from the CSID that is received, extract the service state notice position of this base station services state of expression, judge whether to exist the base station that the 1st communication agency in the current utilization can be provided according to the service state notice position that extracts, under the situation that is judged as the base station that does not have to provide the 1st communication agency, the control of the 2nd communication agency that can use when carrying out that communication agency automatically switched to handover.
According to the present invention, owing to be provided with the service state notice position of the service state of this base station of expression as a whole in CSID, travelling carriage just can be discerned the service state of this base station only by receiving any a piece of news of the logical control channel that is sent by the base station.Thus, can implement handover processing at short notice.
In addition, the connection delay time in the time of can using the service state of base station to reduce transmitting-receiving.
Description of drawings
Fig. 1 is the figure of expression mobile communication system of the present invention.
Fig. 2 is the figure of the position of the CSID in the mobile communication system of presentation graphs 1 one example of distributing.
Fig. 3 be the mobile communication system of presentation graphs 1 each base station-A11～-figure of the setting example of the CSID of C13.
The flow chart of one example of the processing when Fig. 4 is the handover of mobile communication terminal-D21a of presentation graphs 1.
Other routine flow charts of processing when Fig. 5 is the handover of mobile communication terminal-D21a of presentation graphs 1.
Embodiment
Below, with reference to accompanying drawing, the best mode that is used to carry out an invention is described.
Fig. 1 is the figure that is used to illustrate the execution mode of mobile communication system of the present invention.In Fig. 1, as the structure of mobile communication system, illustrate by base station-A11, base station-B12, base station-C13 and and these base stations between carry out mobile communication terminal-D21 that the travelling carriage of radio communication constitutes.In the mobile communication system of present embodiment, except voice call is provided, also provide the multiple service of the data communication of the data communication of line-switching types such as PIAFS and packets of information exchanged form.
In Fig. 1, base station-A11 and base station-C13 are the base stations that the packet data communication service can be provided, and base station-B12 can not provide this serving base station.Here, and the mobile communication terminal-D21 of implementation information packet data communications between base station-A11, from the coverage of base station-A11 under the situation that the coverage of base station-B12 and base station-C13 direction moves, mobile communication terminal-D21a need with the base station that connects from base station-A11 switch to base station-B12 or-C13 (handover).Wherein, the same mobile communication terminal-D21 after mobile communication terminal-D21a represents to move.
At this moment, as the condition of the base station of selecting the switching destination, mobile communication terminal-D21a needs will select to provide the base station of packet data communication service.This is because there is the cause that the base station of packet data communication service can not be provided by the base station in the coverage.
In the present embodiment, each base station can receive these signals by the mobile communication terminal arbitrarily that is present in the coverage in the signal that sends expression our station service state at any time.In the present embodiment, whether can provide the information of certain service to be called service state the expression base station.
In the present embodiment, the service state of our station is notified to the method that is present in the mobile communication terminal in the service area as each base station, will be as CSID (the Cell StationIdentification of announcement information; Base station IDs (base station identifiers or base station numbering)) the service state notice purposes is distributed in certain position in.
Fig. 2 is the figure of the example that distributes of expression CSID.In example shown in Figure 2, CSID is made of 9 entrepreneur identifiers, 16 group call area numbering, 16 additional ID and 1 service state notice position.Like this, in the present embodiment, with 1 among the CSID of expression base station IDs position that is assigned as service state notice usefulness.CSID is by the intrinsic value of operator to each base station assigns.At this moment, according to the service provision capacity of base station, decide the value of the position of service state notice usefulness.For example, in the base station that packet data communication can be provided, the service state notice is set at " 1 " with the position, in contrast, in the base station that packet data communication can not be provided, the service state notice is set at " 0 " with the position.
Fig. 3 be presentation graphs 1 each base station-A11～-the setting example of the CSID of C13.In Fig. 3, about base station-A11, be set at 9 entrepreneur identifier with 100000001, be set at 16 group call area numbering with 0000000000000001, be set at additional ID with 0000000000000001, be set at 1 service state notice position 1.The packets of information service can be provided.About base station-B12, with regard to entrepreneur identifier and group call area numbering, set the position identical with base station-A11, set 0000000000000010 as additional ID, be set at service state notice position with 0.The packets of information service can not be provided.About base station-C13, with regard to entrepreneur identifier and group call area numbering, being set is the position identical with base station-A11, is set at 0000000000000011 and adds ID, is set at service state notice position with 1.The packets of information service can be provided.
And, with regard to the structure of entrepreneur identifier, group call area numbering, additional ID, for example, can use the structure of record in following " cordless telephone generation 2 system standard specification " (the RCR STD-28) of ARIB.
CSID is contained in all message of the logical control channel that each base station sends always off and on.Therefore, mobile communication terminal only by receiving any information of the logical control channel that is sent by the base station, just can identify the service state of this base station.
In the example of Fig. 1, mobile communication terminal-the D21a that moves out from the service area of base station-A11, by one in the message that receives the logical control channel that base station-B12 and base station-C13 send respectively, only be the base station that base station-C13 can be chosen as the handover destination thereby can identify.That is, a piece of news of mobile communication terminal-D21a by the receive logic control channel, thus can select to continue to utilize the base station-C13 of the handover destination of same service.Like this, mobile communication terminal-D21a can implement the handover processing from base station-A11 to base station-C13 at short notice.
For the processing when connecting mobile communication terminal, expectation is carried out as described below.Promptly, when the electric power starting of mobile communication terminal, when wanting to use the service of regulation to begin data communication or conversation, receive the service state notice position of this terminal base station of living in (base station of for example pressing close to) and peripheral base station thereof, being connected to can provide on this service and the better base station of receiving sensitivity.Thus, can when beginning to utilize service, select more suitably base station.
In existing P HS system, the every 100ms in base station just notifies the configuration status of the structure of the radio frames of oneself, the information of receiving, system etc.These are by effect regulation message, and order according to the rules, and order sends each message.Therefore, after having defined the message that is used for the notification service state under its situation about notifying, for example in 1.2 seconds only 1 time ratio send.
Relative therewith, in the present embodiment, become following structure: base station IDs is incorporated in all message, can judge it is the message that sends out from which base station from mobile communication terminal one side.For example, owing to be present in calling or the incoming call that all interior base stations of service area can be provided for voice call, so this information needn't be notified in the base station.
But, when newly beginning to serve, for example,, exist a part of base station that only is positioned at service area that the situation of service can be provided for packet data communication.In this case, be necessary whether can provide packet data communication to be notified to mobile communication terminal as service state.This is because when the network that is used for packet data communication is conducted interviews, and need be connected to the cause on the corresponding base station of communicating by letter with packet data.
Fig. 4 is illustrated under the situation that does not have the serving base station that can provide desired, and handed over service is carried out the flow chart of the processing of handover.
Fig. 5 is illustrated under the situation that does not have the base station that desired services can be provided, and temporarily stops the flow chart of the processing of serving.
Next, with reference to Fig. 4 and Fig. 5, when the mobile communication terminal-D21a at Fig. 1 is carried out handover, do not exist the processing under the situation that can be provided to employed serving base station before this to describe.
In Fig. 4, shown in mobile communication terminal-D21a of Fig. 1, carry out at mobile communication terminal under the situation of handover, at this moment, or in advance, receive 1 message at least respectively arbitrarily of the logical control channel of each base station receive, to discern CSID (step S11).
Next, from the CSID of each base station, extract service state notice position (step S12) shown in Figure 2.Judge whether to exist the serving base station (step S13) that can provide in the current utilization according to the service state notice position that extracts here.
Can provide under the situation of the serving base station in the use existing, can provide serving base station in the use, to carry out handover processing (step S14) as the candidate of handover destination.Under the situation that has a plurality of base stations that become candidate,, from these base stations, select the base station of connection here, according to communication speed, receiving sensitivity.So, use identical service, communication is continued.
That is,, will whether can provide the condition of the service in the current use to judge as priority condition with respect to other conditions of communication speed, receiving sensitivity.Under the situation of service in current use the as the packet data communication service, be handed over to the base station that the packet data communication service can be provided.
On the other hand, under not having the situation that the serving base station in the use can be provided, (in step S13, be judged as under the situation of " not existing "), mobile communication terminal be used for and the new base station of handover destination between the service carried out, switch to the setting (step S15) of other services that this base station can provide.So, when handover, other services that this mobile communication terminal that can automatically service be switched to new base station can provide can use.Utilize communicate by letter (the step S16) of other services afterwards, with between the new base station.
Under the situation of service in current use the as the packet data communication service, when the base station handover of packet data communication service can not be provided, automatically switching to the service that this base station can provide, for example is the non-packet data communication service of the data communication services of PIAFS mode.
Perhaps, the service in current use is under the situation of non-packet data communication service, when the base station handover of non-packet data communication service can not be provided, automatically switches to the service that this base station can provide, for example packet data communication service.
Next, with reference to Fig. 5, under the situation that does not have the serving base station that can provide desired, an example that temporarily stops the processing of serving describes.In Fig. 5, identical mark is used in processing same as shown in Figure 4.In the processing shown in Figure 5, replace the step S15 of Fig. 4 and the processing of step S16, and the processing of execution in step S21.In step S21, temporarily stop the processing of the use of serving.For example, temporarily interrupt data communication.
Promptly, in example shown in Figure 5, (be not judged as among the step S13 under the situation of " not existing ") when not existing when the handover under the situation that the serving base station in the use can be provided, do not switch the processing of the service behind the handover, but, stop the processing (step S21) of the communication of service so far being judged as before existence can provide the base station of same services.After stopping utilization, carry out the processing of Fig. 5 repeatedly, under judging existence and can provide the situation of the serving base station before stopping (being judged as among the step S13 under the situation of " existence "), be connected to new base station, and restart to serve the processing (step S14) of utilization.
As mentioned above, in the present embodiment, packet data communication counterpart terminal, service state notice position among the CSID that comprises in all notification messages by each base station transmission of verification, thereby can be when the calling of packet data communication usefulness or handover, visit can provide the base station of packet data communication selectively from the base station that exists on every side.
According to present embodiment, visit can provide under the situation of this serving base station when mobile communication terminal needs selectively, can judge at short notice.Need not append the special message that is used for the notification service state, can notify the service state of each base station.
Embodiments of the present invention, unqualified is said structure, can suitably change: the figure place that makes CSID information on services notice position is more than 2 or moves the position, position.As service type, also unqualified is 2 kinds, also can be corresponding with the kind more than it, they are selected.
Claims (8)
1. mobile communication terminal, its be and the base station between carry out the travelling carriage of radio communication, it is characterized in that, comprising:
Reception is from the mechanism of the announcement information of base station notice;
From the announcement information that is received, extract the mechanism of the service status information of the service state of representing this base station;
According to the service state notice position that extracts, judge whether to exist the mechanism of the base station that the 1st communication agency in the current use can be provided; And
Under the situation that is judged as the base station that does not have to provide the 1st communication agency, carry out communication agency is automatically switched to the mechanism of the control that the 2nd communication agency that can use when the handover uses.
2. mobile communication terminal, its be and the base station between carry out the travelling carriage of radio communication, it is characterized in that, comprising:
Receive the mechanism of the announcement information of notifying by the base station (base station IDs) from the base station;
The service state that extracts the service state of this base station of expression from the announcement information from the base station that is received is notified the mechanism of position;
According to the service state notice position that extracts, judge whether to exist the mechanism of the base station that the 1st communication agency in the current use can be provided; And
Under the situation that is judged as the base station that does not have to provide the 1st communication agency, be judged as before existence can provide the base station of the 1st communication agency, stop to utilize the mechanism of the communication of the 1st communication agency.
3. mobile communication terminal according to claim 1 and 2 is characterized in that,
Whether described service state notice bit representation can provide or can not provide packet communication mode or non-packet communication mode.
4. mobile communication terminal according to claim 1 is characterized in that,
Described the 1st communication agency and described the 2nd communication agency are packet communication mode and non-packet communication mode, perhaps are non-packet communication mode and packet communication mode.
5. mobile communication terminal according to claim 1 and 2 is characterized in that,
Under the situation of wanting to utilize described the 1st communication agency to begin to communicate by letter, receive the service state notice position of residing base station of this TV station and peripheral base station thereof, be connected to service that the 1st communication agency can be provided and receiving sensitivity preferably on the base station.
6. a mobile communication system wherein possesses the base station; And and the base station between carry out the travelling carriage of radio communication, it is characterized in that,
The service status information that comprises the service state of representing this base station in the announcement information of base station to the travelling carriage transmission,
Mobile communication terminal as travelling carriage has:
Reception is by the mechanism of the announcement information of base station notice;
The service state that extracts the service state of this base station of expression from the announcement information from the base station that is received is notified the mechanism of position;
According to the service state notice position that extracts, judge whether to exist the mechanism of the base station that the 1st communication agency in the current use can be provided; And
Under the situation that is judged as the base station that does not have to provide the 1st communication agency, carry out communication agency is automatically switched to the mechanism of the control that the 2nd communication agency that can use when the handover uses.
7. base station wherein and carry out radio communication between the travelling carriage, is characterized in that, comprising:
Travelling carriage is sent the announcement information of the service state notice position set expression base station services state, with as from the regulation of the announcement information (base station IDs) of base station mechanism.
8. communication means, wherein used the base station and and the base station between carry out the travelling carriage of radio communication, it is characterized in that,
Comprise the service status information of representing this base station services state in the announcement information of base station to the travelling carriage transmission;
Mobile communication terminal as travelling carriage receives the announcement information of being notified by the base station;
From the announcement information that is received, extract the service state notice position of this base station services state of expression from the base station;
Judge whether to exist the base station that the 1st communication agency in the current utilization can be provided according to the service state notice position that extracts;
Under the situation that is judged as the base station that does not have to provide the 1st communication agency, carry out communication agency is automatically switched to the mechanism of the control that the 2nd communication agency that can use when the handover uses.
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| JP2003352242 | 2003-10-10 | ||
| JP2003352242A JP2005117551A (en) | 2003-10-10 | 2003-10-10 | Mobile communication terminal, base station, communication system and communication method |
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| CN1606377A true CN1606377A (en) | 2005-04-13 |
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| CN101909337A (en) * | 2009-06-04 | 2010-12-08 | 中兴通讯股份有限公司 | Switching function-based information transmitting methods |
| CN101282570B (en) * | 2007-04-05 | 2011-12-07 | 中兴通讯股份有限公司 | Method for processing interrupt when switching mobile terminal |
| CN102523613A (en) * | 2005-05-27 | 2012-06-27 | 京瓷株式会社 | Wireless communication system, wireless communication apparatus, wireless base station apparatus, and method for controlling handoffs |
| CN101395947B (en) * | 2006-03-01 | 2012-11-14 | 日本电气株式会社 | Mobile communication system, base station, mobile device, notifying method, program, and recording medium |
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| JP4711810B2 (en) * | 2005-11-28 | 2011-06-29 | 京セラ株式会社 | Communication method, mobile terminal and base station |
| US20100015979A1 (en) | 2005-11-28 | 2010-01-21 | Kyocera Corporation | Communication Method, Mobile Terminal and Base Station |
| KR101033340B1 (en) * | 2005-12-27 | 2011-05-09 | 후지쯔 가부시끼가이샤 | Mobile controller and handover control method |
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| CN102348243B (en) * | 2010-07-27 | 2016-05-04 | 索尼公司 | The method, apparatus and system of switching cell in the communication system of support carrier convergence |
| JP5882948B2 (en) * | 2013-06-03 | 2016-03-09 | 京セラ株式会社 | Wireless communication apparatus and control method |
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2003
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2004
- 2004-10-08 CN CN 200410095108 patent/CN1606377A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102523613A (en) * | 2005-05-27 | 2012-06-27 | 京瓷株式会社 | Wireless communication system, wireless communication apparatus, wireless base station apparatus, and method for controlling handoffs |
| CN101395947B (en) * | 2006-03-01 | 2012-11-14 | 日本电气株式会社 | Mobile communication system, base station, mobile device, notifying method, program, and recording medium |
| CN101282570B (en) * | 2007-04-05 | 2011-12-07 | 中兴通讯股份有限公司 | Method for processing interrupt when switching mobile terminal |
| CN101909337A (en) * | 2009-06-04 | 2010-12-08 | 中兴通讯股份有限公司 | Switching function-based information transmitting methods |
| WO2010139230A1 (en) * | 2009-06-04 | 2010-12-09 | 中兴通讯股份有限公司 | Method, base station and terminafor transmitting information based on switch function |
| CN101909337B (en) * | 2009-06-04 | 2014-08-13 | 中兴通讯股份有限公司 | Switching function-based information transmitting methods |
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| Publication number | Publication date |
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| JP2005117551A (en) | 2005-04-28 |
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