CN1306846C - Switch-in control system of mobile communication terminal - Google Patents
Switch-in control system of mobile communication terminal Download PDFInfo
- Publication number
- CN1306846C CN1306846C CNB2004100310856A CN200410031085A CN1306846C CN 1306846 C CN1306846 C CN 1306846C CN B2004100310856 A CNB2004100310856 A CN B2004100310856A CN 200410031085 A CN200410031085 A CN 200410031085A CN 1306846 C CN1306846 C CN 1306846C
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- China
- Prior art keywords
- access
- power
- terminal
- mobile communication
- emission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/04—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources
- H04W40/08—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources based on transmission power
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
An access control system of a mobile communication terminal is provided to more increase the transmission power of an access probe, which is finally transmitted from one access sequence, than the standard transmission power of a terminal when sending the transmission power, thereby attempting an access with the maximum power of the terminal. When a user uses a terminal in a strong electric field, the power of each probe(31) configuring access sequences(30) are calculated. The final probe(31a) of the access sequences(30) is delivered with a maximum voltage calculated in consideration of the level of peripheral electric fields. When the terminal operates in a weak electric field, the probes(31,31a) of the access sequences(30) are controlled by the calculated power values. The final probe(31a) is controlled by a maximum tolerant power value of the terminal by considering the strength of a receiving electric field received from a monitored base station.
Description
Technical field
The present invention relates to the access channel of mobile communication terminal, in more detail, relate to a kind of access control system of mobile communication terminal, for carrying out and being connected of base station, an Access Probe signal (accessprobe) and access sequence (access sequence) are set to the maximum power that terminal allows, improve the possibility that is connected with the base station.
Background technology
Fig. 1 is the power state of a control exemplary plot of terminal when access attempt (access attempt) is carried out in the base station in the past.
Under holding state, receive guiding (pilot) access procedure of the signal of base station at mobile communication terminal, the default identification (ID) of mobile communication terminal supervision base station, access parameter, electric field strength etc.
Based on this supervision result, terminal is utilized the access parameter of corresponding base station, carries out access attempt to corresponding base station, if insert successfully, then can login terminal in the corresponding base station system, is converted to communications status then, just can converse with other terminal.
The access attempt (access attempt) the 1st that is undertaken by terminal, a plurality of access sequences (access sequence) 2 carry out by launching, an access sequence 2 comprises a plurality of detectable signals (probe) 3, and detectable signal (probe) the 3rd comprises the power signal of preamble and information.
Access sequence 2 is made of detectable signal 3, and in the power of detectable signal 3 was controlled in the past, initial detectable signal 3 was set to lower-wattage, and its power level increases step by step, and it is maximum that the power of last detectable signal reaches.
The power level of detectable signal 3 in the past is to be media with the base station access parameter, according to following formula decision.
mean?output?power?of?access?probe(dBm)＝
-mean?input?power(dBm)
+offset?power
+interference?correction
+NOM_PWRs-16*NOM_PWR_EXTs
+INIT_PWRs
+PWR_LVL*PWR_STEPs
As mentioned above, a plurality of detectable signals 3 with the power emission calculated according to above-mentioned formula form an access sequence 2.The terminal repeating emission is carried out access attempt according to the access sequence 2 of the power of above-mentioned formula calculating to the base station.
In access attempt process as above, not login in corresponding base station when terminal, when failing to enter communications status, terminal is reselected the sub-district, carries out access attempt once more.
But in the access control process of the mobile communication terminal in the past that as above constitutes, there are the following problems always.
Terminal had realized with the base station of mobile communication network parameter that optimization or the suitable situation of access channel environment were benchmark in the past, was provided with access attempt 1 power.Therefore, under adverse circumstances, the situation of access can take place to realize according to the power of above-mentioned setting.
And, repeatedly repeatedly in the process of access sequence 2, the terminal power consumption takes place.And do not carrying out under the state of access attempt with the terminal maximum power, carry out the selection again of sub-district etc., cause the access performance of terminal to descend.
In addition, if the failure of the access attempt of terminal then in carrying out the process of selecting again the sub-district, can be missed page information problems such as (page message).
Summary of the invention
The object of the present invention is to provide a kind of power that can suitably change the Access Probe signal according to surrounding environment, improve the access control system of terminal the mobile communication terminal of the access performance of base station.
Another object of the present invention is to provide a kind of, prevent the access control system of the mobile communication terminal of power consumption unnecessary in the access procedure according to the access power control that inserts fitness of environment conversion terminal.
For achieving the above object, insert in the required access step to the base station in terminal, the feature of the access control system of mobile communication terminal of the present invention is: according to the transmitting power of the Access Probe signal of the last emission of the maximum access power decision access sequence that inserts environment and terminal, several initial in access sequence detectable signals are carried out according to standard emission power, transmitting power at the Access Probe signal of the last emission of access sequence is increased to is higher than described standard emission power and launches, and the transmitting power of the Access Probe signal of described last emission is not higher than the maximum allowable power of terminal.
Insert in the required access step to the base station in terminal, another feature of the present invention is: according to the transmitting power of the last access sequence of launching of maximum access power decision that inserts environment and terminal, in order to carry out access attempt, repeatedly launch access sequence with standard emission power, when access base station not, Fa She access sequence is to be higher than the power emission of described standard emission power at last, carry out access attempt, and the transmitting power of the access sequence of described last emission is not higher than the maximum allowable power of terminal.
Another feature of the present invention is: be increased to and be higher than standard emission power and launch, use when carrying out access attempt under the weak electric field environment.
Another feature of the present invention is: the voltage that is increased to when being higher than standard emission power and launching is the maximum voltage that terminal allows.
Another feature of the present invention is: be increased to when being higher than standard emission power and launching, power level is changed according to the terminal surrounding Electric Field Distribution, when the user used terminal under highfield, the last detectable signal of access sequence was launched with the maximum voltage that electric field strength around the basis calculates; When terminal was worked in weak electric field, last detectable signal was controlled to be the maximum allowable power value of terminal.
Another feature of the present invention is: when the maximum allowable power that utilizes terminal inserts successfully, under communications status, utilize the closed-loop path voltage control, use power of communications to remain on the base station and carry out the required power bracket of transceiver.
Even under weak electric field or channel circumstance condition of severe, the present invention also can carry out access attempt with the maximum power of terminal by as above constituting, and improves the access performance of terminal to the base station.
Description of drawings
Fig. 1 is the power state of a control exemplary plot of terminal when access attempt is carried out in the base station in the past;
Fig. 2 is that the required terminal control of access power control of carrying out the embodiment of the invention constitutes exemplary plot;
Fig. 3 is the power state of a control exemplary plot of present embodiment;
Fig. 4 is the terminal access power state of a control exemplary plot of another embodiment of the present invention.
* the symbol description * of accompanying drawing major part
10......... mobile communication terminal 11......... system interface
12......... the 13........ of transceiver portion microprocessor
14......... memory 15........ user interface
16......... signal input part 17........ display part
20......... base station 30........ access sequence (accesss sequence)
31......... Access Probe signal (access probe)
31a........ last Access Probe signal
Embodiment
With reference to the accompanying drawings, describe the formation of the useful embodiment of access control system in detail with the mobile communication terminal of the present invention that as above constitutes.
Fig. 2 is that the required terminal control of access power control of carrying out the embodiment of the invention constitutes exemplary plot, and Fig. 3 is the power state of a control exemplary plot of present embodiment.
As shown in the figure, the mobile communication terminal 10 of present embodiment comprises two kinds of interfaces: a kind of is the required system interface 11 of system control that carries out terminal, another kind be for the user can operating terminal 10 user interface 15.
The user comes operating terminal 10 by user interfaces 15 such as signal input part 16 or display parts 17, selects the service that needs in the multiple function that terminal 10 provides.
After the user started terminal, transceiver portion 12 carried out inserting the acquiescence ID of supervision base station 20, access parameter, power level etc. with the guiding of a plurality of base stations 20 on every side under the control of microprocessor 13.
The parameter about each base station 20 of microprocessor 13 to monitor that the result was obtained according to program stored in the memory 14, selected one serving base station 20 is provided.
After having selected service that base station 20 is provided,, carry out access attempt according to the parameter that offers above-mentioned base station 20.
The microprocessor 13 of the terminal 10 in the present embodiment utilizes the following formula of storage in the terminal 10 based on the access parameter of base station, in the access sequence 30 that is made of a plurality of Access Probe signals 31, determines the power level of each Access Probe signal 31.
mean?output?power?of?access?probe(dBm)＝
-mean?input?power(dBm)
+offset?power
+interference?correction
+NOM_PWRs-16*NOM_PWR_EXTs
+INIT_PWRs
+PWR_LVL*PWR_STEPs
But the last detectable signal 31a of this access sequence is not by above-mentioned formula decision, but by the maximum access power decision that inserts environment and terminal 10.
That is, when the intensity of 20 signals that receive from the base station was more weak, microprocessor 13 was controlled, last Access Probe signal 31a in the sequence 30 is launched with maximum intensity, thereby,, also can easily carry out the login of terminal 10 or set up calling even base station 20 is far apart from terminal 10.
And in the present embodiment, microprocessor 13 is controlled, when when very weak, in an access sequence 30, making the power of last Access Probe signal 31a become 10 maximum transmission power that can realize of terminal from the electric field strength of base station.
Therefore, the terminal 10 of present embodiment can prevent the problem of terminal existence in the past, that is, prevent because of carrying out the power consumption that access attempt takes place with standard emission voltage for a long time.
In addition, the terminal 10 of present embodiment can also prevent following situation, that is, and and when because of carrying out the login that access attempt can't realize terminal 10 with low-power or setting up when calling out (call setup), prevent through the sub-district selection course again, access attempt is carried out in other base station with making an unnecessary move.
For this reason, in the terminal 10 of present embodiment, storing the program of the power of each detectable signal 31 of being used to control access sequence 30,31a, so that carry out access power control, according to the intensity of electric field on every side, regulate the maximum voltage of last detectable signal 31a in the access sequence 30 of terminal terminal 10 emissions.
According to the intensity of electric field on every side, in an access sequence 30, the voltage of last detectable signal 31a can be controlled to 10 maximum powers that can launch of terminal.
In addition, because the terminal 10 of present embodiment is to use the closed-loop power control method under communications status, so, even setting up with maximum power under the situation of calling out, also can keep communicating by letter of terminal 10 and 20 of base stations with suitable power.
The following describes the effect of access control system with the mobile communication terminal of the present invention that as above constitutes.
When the user uses terminal 10 under highfield, utilize above-mentioned formula to calculate the power of each detectable signal 31 that constitutes access sequence 30, the last detectable signal 31a of this sequence 30 with according to around the maximum voltage that calculates of electric field strength launch, thereby prevented because of the die down login failure that occurs or set up call failure of systematic function.
When terminal 10 is worked in weak electric field, each detectable signal 31 of access sequence 30,31a are subjected to the control of the performance number that calculates by above-mentioned formula, last detectable signal 31a is controlled to be the maximum allowable power value of terminal 10, and this power is to consider to calculate from the received electric field strength of the base station 20 that monitored by terminal 10.
So, 10 restrictions that can be not limited to the parameter of base station 20 of terminal, but carry out access attempt according to electric field strength, thus can reduce the possibility of contingent access failure in weak electric field, can realize inserting rapidly.
In addition, when having realized setting up calling and having entered communications status, the initial power of communications status is not subjected to be used at first the influence of the performance number of access attempt, so, though be worth bigger slightly, but under the situation that continues the maintenance communications status, can carry out closed-loop power control, carry out on the required suitable power of transceiver thereby power is controlled at base station 20.
Fig. 4 has shown the terminal access power state of a control of another embodiment of the present invention.As shown in the figure, in the overall process of access attempt 40, the access power of present embodiment control is at initial several access sequences 31, carries out access attempt with above-mentioned calibration power.
But, in the 1st time access attempt 40, last access sequence 41a be according to around electric field strength and the terminal 10 maximum transmitting powers that allow calculate performance number, carry out the access attempt of base station 20 with this power.
In this last access sequence 41a, the power of each Access Probe signal 43a is determined according to the power that is higher than the calibration power that calculates according to the foregoing description formula.If even so, still can't realize the login of terminal 10 or set up to call out that so, 10 at terminal is carried out the sub-district and selected according to common access step.
Interest field of the present invention is not only to be defined in the foregoing description, but is determined by claims, be included in certainly with claims in various distortion and the transformation carried out in the same range as of specified particular.
The present invention is by as above constituting, and is weak or when carrying out access attempt in weak electric field in the hardware performance of terminal, improved the connection possibility with the base station.
In addition, at a detectable signal in the access sequence, or at a sequence in 1 access attempt, allow maximum power to carry out access attempt with terminal, so, repeated nucleotide sequence can not occur or a large amount of power consumptions when taking place to select (reselection) again, improve the access possibility with the base station simultaneously, improve the performance of terminal.
Claims (10)
1. the access control system of a mobile communication terminal is at following access attempt, promptly, the a plurality of Access Probe signals that progressively improved by transmitting power constitute access sequence, mobile communication terminal utilizes a plurality of access sequences to carry out access to the base station, in this access attempt, it is characterized in that:
Transmitting power according to the Access Probe signal of the last emission of the maximum access power decision access sequence that inserts environment and terminal, several initial in access sequence detectable signals are carried out according to standard emission power, the transmitting power of Fa She Access Probe signal is increased to and is higher than described standard emission power and launches at last, and the transmitting power of the Access Probe signal of described last emission is not higher than the maximum allowable power of terminal.
2. the access control system of mobile communication terminal according to claim 1 is characterized in that: described being increased to is higher than standard emission power and launches and use when carrying out access attempt under the weak electric field environment.
3. the access control system of mobile communication terminal according to claim 1 is characterized in that: the described voltage that is increased to when being higher than standard emission power and launching is the emission maximum voltage that terminal allows.
4. the access control system of mobile communication terminal according to claim 1, it is characterized in that: when the transmitting power of the Access Probe signal of described last emission is increased to and is higher than standard emission power and launches, power level is changed according to the terminal surrounding Electric Field Distribution, when the user used terminal under highfield, the last detectable signal of access sequence was launched with the maximum voltage that electric field strength around the basis calculates; When terminal was worked in weak electric field, last detectable signal was controlled to be the maximum allowable power value of terminal.
5. the access control system of mobile communication terminal according to claim 1, it is characterized in that: when the maximum allowable power that utilizes described terminal inserts successfully, under communications status, utilize closed-loop path voltage to control, power of communications is remained on the base station carry out the required power bracket of transceiver.
6. the access control system of a mobile communication terminal is at following access attempt, promptly, the a plurality of Access Probe signals that progressively improved by transmitting power constitute access sequence, mobile communication terminal utilizes a plurality of access sequences to carry out access to the base station, in this access attempt, it is characterized in that:
Transmitting power according to the last access sequence of launching of maximum access power decision that inserts environment and terminal, when in order to carry out access attempt for several times but when not inserting yet with standard emission power emission access sequence, Fa She access sequence is to be higher than the power emission of described standard emission power at last, carry out access attempt, and the transmitting power of the access sequence of described last emission is not higher than the maximum allowable power of terminal.
7. the access control system of mobile communication terminal according to claim 6 is characterized in that: described being increased to is higher than standard emission power and launches and use when carrying out access attempt under the weak electric field environment.
8. the access control system of mobile communication terminal according to claim 6 is characterized in that: the described voltage that is increased to when being higher than standard emission power and launching is the emission maximum voltage that terminal allows.
9. the access control system of mobile communication terminal according to claim 6, it is characterized in that: when the transmitting power of the access sequence of described last emission is increased to and is higher than standard emission power and launches, power level is changed according to the terminal surrounding Electric Field Distribution, when the user used terminal under highfield, the last detectable signal of access sequence was launched with the maximum voltage that electric field strength around the basis calculates; When terminal was worked in weak electric field, last detectable signal was controlled to be the maximum allowable power value of terminal.
10. the access control system of mobile communication terminal according to claim 6, it is characterized in that: when the maximum allowable power that utilizes described terminal inserts successfully, under communications status, utilize closed-loop path voltage to control, power of communications is remained on the base station carry out the required power bracket of transceiver.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030061199A KR100563703B1 (en) | 2003-09-02 | 2003-09-02 | A Access Control System For Mobile Phone |
| KR1020030061199 | 2003-09-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1592477A CN1592477A (en) | 2005-03-09 |
| CN1306846C true CN1306846C (en) | 2007-03-21 |
Family
ID=34617207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100310856A Expired - Fee Related CN1306846C (en) | 2003-09-02 | 2004-04-20 | Switch-in control system of mobile communication terminal |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100563703B1 (en) |
| CN (1) | CN1306846C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100727039B1 (en) * | 2005-02-03 | 2007-06-12 | 이광재 | A access method having low power consumption of mobile communication terminal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0765096A2 (en) * | 1995-09-20 | 1997-03-26 | Ntt Mobile Communications Network Inc. | Access method mobile station and base station for CDMA mobile communication system |
| CN1344474A (en) * | 1999-03-24 | 2002-04-10 | 高通股份有限公司 | Reservation multiple access |
-
2003
- 2003-09-02 KR KR1020030061199A patent/KR100563703B1/en not_active IP Right Cessation
-
2004
- 2004-04-20 CN CNB2004100310856A patent/CN1306846C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0765096A2 (en) * | 1995-09-20 | 1997-03-26 | Ntt Mobile Communications Network Inc. | Access method mobile station and base station for CDMA mobile communication system |
| CN1344474A (en) * | 1999-03-24 | 2002-04-10 | 高通股份有限公司 | Reservation multiple access |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1592477A (en) | 2005-03-09 |
| KR20050023783A (en) | 2005-03-10 |
| KR100563703B1 (en) | 2006-03-28 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 |