CN1196648A - Method for changing control channel in cellular system - Google Patents
Method for changing control channel in cellular system Download PDFInfo
- Publication number
- CN1196648A CN1196648A CN98104350A CN98104350A CN1196648A CN 1196648 A CN1196648 A CN 1196648A CN 98104350 A CN98104350 A CN 98104350A CN 98104350 A CN98104350 A CN 98104350A CN 1196648 A CN1196648 A CN 1196648A
- Authority
- CN
- China
- Prior art keywords
- channel
- cellular system
- channel information
- sweep limits
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A process is related to replacement of control channels in analog and CDMA cellular systems. In accordance with invention process includes stages of supply of password, of scanning range and of initial information on channel and analysis of password, scanning range and initial information on channel if supplied password corresponds to preset password. Channels are replaced in agreement with scanning range and initial information on channel.
Description
The present invention relates to a kind of method that changes the cellular system channel, more particularly, relate to a kind of method that changes the cellular system control channel.
Usually, cellular system has a plurality of control channels and a plurality of voice channel, and these channels cover row provides the function of session services for the cellular system user.Fig. 1 shows Korea S tasks the simulation cellular system according to Advanced Mobile Phone Service (AMPS) EIA/TIA-553 and TR-45 mode branch frequency spectrum.2 frequency bands are arranged, i.e. frequency band A and frequency band B.Each frequency band is made up of a plurality of channels, and wherein 21 channels are Dedicated Control Channel, and remaining channel is as voice channel.The control channel of frequency band A and frequency band B corresponds respectively to channel 313 to 333 and channel 334 to 354.As shown in fig. 1, AMPS adopts 800 mhz band.
Fig. 2 shows Korea S and divides the frequency spectrum of tasking the simulation cellular system and the frequency spectrum of tasking digital cellular system according to code separation multiplex access system (CDMA) branch according to AMPS.Consult Fig. 1, frequency band A is equivalent to the public services district of AMPS system.Consult Fig. 2, frequency band B is equivalent to the public services district of cdma system.
With regard to the situation of Korea S, the frequency spectrum that adopt to divide the frequency spectrum of tasking simulation cellular system midband A and branch to task numeral (CDMA) cellular system midband B can make cellular system normally communicate as above-mentioned.But in another country, public frequency district illustrated in figures 1 and 2 may assign other purposes of work and use.Below just adopt " predetermined spectrum " speech to refer to the same frequency spectrum in public frequency district illustrated in figures 1 and 2 that takies that other country adopts.In this case, AMPS cellular system and CDMA cellular system can not provide dual mobile communication service.Predetermined spectrum can supply military use usefulness, also can use for the radio-frequency unit of other non-military use.Fig. 3 represent to simulate with the CDMA cellular system be the shared public frequency district of predetermined spectrum.
The CDMA frequency spectrum is any frequency district that can take 800 mhz band, but each control channel of AMPS frequency spectrum is limited in the predetermined district frequently.Therefore, just can not provide dual mobile communication service if the control channel of predetermined spectrum and analogue system is overlapping.
Change this control channel frequency spectrum to keep a kind of method of duolateral communication service when the purpose of this invention is to provide the control signal frequency spectrum as other purposes.
For achieving the above object, provide the method that changes each channel in simulation and the CDMA cellular system by embodiments of the invention here.Described method comprises the following steps: input key code password, sweep limits and startup channel information, and analyzes key password, sweep limits and startup channel information when the key communication word of importing is consistent with the key communication word of being scheduled to.Channel changes according to sweep limits and initial channel information.
The detailed description of reading the embodiment that the present invention exemplifies in conjunction with the accompanying drawings can be known and understands above and other objects of the present invention, characteristics and advantage.In the accompanying drawing, identical with symbolic representation or the similar part of identical numbering.
Fig. 1 illustrates the frequency spectrum that branch is tasked the simulation cellular system.
Fig. 2 illustrates the frequency spectrum that branch is tasked simulation cellular system and digital cellular system.
Fig. 3 be illustrate the simulation and the CDMA cellular system be the shared public frequency zones of predetermined spectrum.
Fig. 4 is by the altered cellular system of the illustrational frequency spectrum of one embodiment of the present of invention.
Fig. 5 is by the control channel after the change of one embodiment of the present of invention explanation.
A most preferred embodiment of the present invention is described with reference to the accompanying drawings.Should be noted that at first in whole accompanying drawing, same alpha code is used for representing to have the identical or equivalent element of identical function.In addition, among the present invention to those known function and structures that theme of the present invention is thickened, not explanation in detail here.
In one embodiment of the invention, when the frequency spectrum of simulation cellular system and CDMA cellular system be that predetermined spectrum just changes these frequency spectrums when shared.In other words, make other purposes usefulness, just make spectrum offset so that keep normal duolateral communication if the frequency spectrum of control channel is assigned.Because the CDMA digital cellular system can be in any frequency district's work of 800 mhz band, and the frequency spectrum of simulation cellular system (being the AMPS control channel) is normally fixing, thereby the present invention can make user's artificial frequency spectrum of definite (skew) control channel when this frequency spectrum and predetermined spectrum are overlapping.
Fig. 4 illustrates the altered cellular system of frequency spectrum by one embodiment of the present of invention.At present, the cellular system of Korea S adopts 800 mhz band.The frequency spectrum of the frequency spectrum of 825 megahertz to 845 megahertzes and 865 megahertz to 885 megahertzes is used separately as (or collection of letters) channel and the collection of letters (or posting a letter) channel of posting a letter.In other words, a frequency spectrum is for reverse (portable terminal is to fixed station) channel usefulness, and another frequency spectrum is used for forward (fixed station is to travelling carriage) channel.The frequency spectrum of posting a letter and collect mail is divided into 2 frequency bands: frequency band A and frequency band B, the use that corresponds respectively to simulation cellular system (AMPS) and CDMA cellular system is distinguished frequently.As shown in Figure 4, when predetermined spectrum takies with control channel 313 to 360 corresponding frequently districts, just change the frequency spectrum of control channel, make its busy channel 0 to 10 and 360 to 370.
According to one embodiment of the present of invention, the method that changes the analogue system control channel is by giving the frequency spectrum regulation system parameters beyond the predetermined spectrum, and promptly the control channel frequency spectrum carries out.In other words, said method is to be undertaken by the software change channel relevant with the CDMA cellular system with the simulation cellular system of double-mode mobile service system.In this case, the key password by input regulation changes and imports CDMA Channel and Analog Control Channel.
The control channel of regulation analogue system is " 11 ", and as shown in Figure 4, sweep limits is " 11 ".In order to change the control channel of cellular system analog form, imported mobile password before this, follow the input scan scope, import the startup channel information of frequency band A again, import the startup channel information of frequency band B at last.Sweep limits is corresponding to the channel quantity of two frequency bands.It is occupied thereby can be used as and change the frequency district in district frequently, back corresponding to frequency band to start channel information.For example, the startup channel information of frequency band A is represented with frequency band A corresponding frequency spectrum in case change the channel that should start.The regulation sweep limits is " 11 ", and the startup channel information of allocated frequency band A is " 10 ", and the startup channel information of allocated frequency band B is " 360 ".Like this, control channel can be set at any use frequency district and not be set at predetermined frequency district shown in Figure 4.Therefore, can use the channel 1～10 of frequency band A as control channel.
Frequency spectrum after Fig. 5 illustrates cellular system and changes by one embodiment of the present of invention.Consult Fig. 5, the former simulation frequency band of numbering 11 and 12 expressions (changing before) by the user, the user-defined Analog Control Channel of numbering 21 and 22 expressions is distinguished frequently with voice channel and is distinguished frequently.Channel is distinguished frequently with the key password of the analog form regulation of simulation/CDMA cellular system and by changing the change of analogue system parameter.Like this, can be used as Analog Control Channel with regard to an analog frequency band 31,21 after changing and a part of 22.
In sum as can be known, the present invention can solve some problems that predetermined spectrum produces by any each original restricted control channel scope of change simulation cellular system.In addition, because the user can manually stipulate to simulate the analog form control channel of cellular system and cdma system, be understood that the production process that the present invention need not to change cellular system just can keep duolateral communication.
Some embodiment that exemplified with regard to the present invention describe with reference to accompanying drawing above, but it is self-evident, the present invention is not limited to these specific embodiments, and the experts in present technique field can carry out all changes and modification to the foregoing description under the prerequisite that does not break away from the scope of the invention and spirit.
Claims (5)
1. a method that changes channel in simulation and the CDMA cellular system is characterized in that it comprises the following steps:
Input key code password, sweep limits and startup channel information;
When the key password of input is consistent with predetermined key communication word, analysis of key code communication word, sweep limits and startup channel information; With
Change channel according to sweep limits and startup channel information.
2. a change has the simulation of two frequency bands and the method for the control channel in the CDMA cellular system, it is characterized in that it comprises the following steps:
Import key communication word, sweep limits and the startup channel information of first and second frequency bands;
Analysis of key sign indicating number password, sweep limits and changeable channel information;
When the key password of input is consistent with predetermined key password, analyze and start channel information and sweep limits; With
Sweep limits and startup channel information according to first and second frequency bands change control channel.
3. method as claimed in claim 2 is characterized in that, the startup channel information of key notice word, sweep limits, startup channel information and second frequency band of first frequency band is imported by the analog form of simulation and CDMA cellular system in turn.
4. the method for claim 1 is characterized in that, described analytical procedure is to carry out according to the frequency spectrum of each channel as other purposes.
5. method as claimed in claim 2 is characterized in that, described analytical procedure is to carry out according to the frequency spectrum of control channel as other purposes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR3507/97 | 1997-01-31 | ||
| KR1019970003507A KR19980067465A (en) | 1997-01-31 | 1997-01-31 | How to Change Control Channel in Mobile Communication System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1196648A true CN1196648A (en) | 1998-10-21 |
Family
ID=19496440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98104350A Pending CN1196648A (en) | 1997-01-31 | 1998-01-31 | Method for changing control channel in cellular system |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JP3031885B2 (en) |
| KR (1) | KR19980067465A (en) |
| CN (1) | CN1196648A (en) |
| DE (1) | DE19802836C2 (en) |
| FR (1) | FR2759221B1 (en) |
| GB (1) | GB2321828B (en) |
| RU (1) | RU2143786C1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5119397A (en) * | 1990-04-26 | 1992-06-02 | Telefonaktiebolaget L M Ericsson | Combined analog and digital cellular telephone system having a secondary set of control channels |
| US5142691A (en) * | 1991-04-05 | 1992-08-25 | Motorola, Inc. | Frequency management system |
| JPH099329A (en) * | 1995-06-16 | 1997-01-10 | Fujitsu Ltd | Channel changeover control system |
| JP2786156B2 (en) * | 1996-05-28 | 1998-08-13 | 日本電気移動通信株式会社 | PHS base station free channel search method and control device therefor |
-
1997
- 1997-01-31 KR KR1019970003507A patent/KR19980067465A/en not_active Application Discontinuation
- 1997-12-09 GB GB9725989A patent/GB2321828B/en not_active Expired - Lifetime
-
1998
- 1998-01-26 JP JP10011883A patent/JP3031885B2/en not_active Expired - Fee Related
- 1998-01-26 DE DE19802836A patent/DE19802836C2/en not_active Expired - Fee Related
- 1998-01-29 FR FR9800974A patent/FR2759221B1/en not_active Expired - Fee Related
- 1998-01-30 RU RU98102264A patent/RU2143786C1/en not_active IP Right Cessation
- 1998-01-31 CN CN98104350A patent/CN1196648A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP3031885B2 (en) | 2000-04-10 |
| FR2759221B1 (en) | 2001-06-08 |
| DE19802836C2 (en) | 2001-09-06 |
| DE19802836A1 (en) | 1998-10-01 |
| GB9725989D0 (en) | 1998-02-04 |
| RU2143786C1 (en) | 1999-12-27 |
| GB2321828A (en) | 1998-08-05 |
| GB2321828B (en) | 1999-04-07 |
| JPH1141647A (en) | 1999-02-12 |
| KR19980067465A (en) | 1998-10-15 |
| FR2759221A1 (en) | 1998-08-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |