CN102791021B - Method and device for determining transmission power of probe - Google Patents
Method and device for determining transmission power of probe Download PDFInfo
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- CN102791021B CN102791021B CN201110125975.3A CN201110125975A CN102791021B CN 102791021 B CN102791021 B CN 102791021B CN 201110125975 A CN201110125975 A CN 201110125975A CN 102791021 B CN102791021 B CN 102791021B
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Abstract
The invention discloses a method and a device for determining transmission power of a probe. The method and the device relate to the technical field of communication. The method can accurately determine transmission power of the probe, reduce access delay of the AT, or reduce interference to other ATs in the same area. By means of the scheme, a terminal is used for acquiring first reference information transmitted to the terminal by an access network after the probe is successfully transmitted in the last time, then determining the transmission power of the probe according to the first reference information and transmitting the probe according to the transmission power of the probe. The method and the device are suitable for being used in adjustment of the transmission power.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and the device of determining the through-put power of probe.
Background technology
In a wireless communication system, multi-upstream access channel is a kind of shared channel, and each AT (AccessTerminal accesses terminal) can adopt the mode of probe to initiate the process accessed.At HRPD (High ratepacket data, HRPD (high rate packet data)) in system, an access attempts can have at most Ns access probe sequence as shown in Figure 1, each access probe sequence has at most Np probe, before each access probe of transmitting, AT determines the transmitting power of this probe, and send this probe with the transmitting power determined, if after transmission probe, do not receive AN (Access Network within a certain period of time, Access Network) response message, then terminal launches the next probe of this probe sequence after one period of duration of wait according to higher transmitting power, until receive the response message of AN, or till reaching maximum probe emission quantity Np.
If the access probe quantity of launching also does not receive the response of AN when reaching Np, then AT will wait for that one period of duration starts the transmitting of next access probe sequence, if the access probe sequence quantity of launching also does not receive the response message of AN when reaching Ns, then this access attempts failure, so this access attempts terminates, wherein Np is the broadcasted values issued in HRPD system by AN, and Ns is consulted to obtain by AN and AT, and default value is 3;
If AN will send response message to terminal after successfully receiving the probe of AT transmitting, its access probe launched of instruction AT will receive, and AT receives response message and just represents this access attempts success, so this access attempts terminates.
Because the access channel of HRPD is self-interference, the useful signal of an AT transmitting is exactly interference for the another one AT of same community, therefore AT is when launching access probe, probe emission power needs enough large, make probe signals can overcome the unfavorable conditions such as the loss of transmission path, the interference of background noise, successfully received and demodulation by AN; Meanwhile, probe emission power needs again under meeting probe successfully to be received the prerequisite of also demodulation by AN little as much as possible, to reduce the interference of other AT to same community.
But, when adopting prior art AT emitting probe, the parameters such as the broadcasted values that AT only issues according to self Received signal strength situation and AN estimate the transmitting power of probe, can not accurately determine the transmitting power of probe, if the transmitting power of probe is too small, thus the access delay of AT can be strengthened; If the transmitting power of probe is excessive, then can increase the interference to same other AT of community.
Summary of the invention
Embodiments of the invention provide a kind of method and the base station of determining the through-put power of probe, can determine the transmitting power of probe more accurately, the access delay reducing AT or the interference reduced same other AT of community.
For achieving the above object, embodiments of the invention adopt following technical scheme:
Determine a method for the through-put power of probe, comprising:
Sent to the first reference information of described terminal by Access Network after terminal once succeeds in sending up probe before obtaining, the signal parameter of the probe once succeeded in sending up before described first reference information comprises terminal and Access Network successfully receive the signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described first reference information comprises transmit power offset amount; Or described first reference information comprises the quantized value of transmit power offset amount;
Described terminal determines the transmitting power of this probe according to described first reference information;
Described terminal launches this probe according to the transmitting power of described this probe determined.
Determine a method for the through-put power of probe, comprising:
This probe that receiving terminal sends;
Transmission includes the response message of the second reference information to described terminal, the transmitting power of next probe is determined according to described reference information to make described terminal, described second reference information comprises the signal parameter of the probe that this succeeds in sending up and Access Network and successfully receives signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described second reference information comprises transmit power offset amount; Or, the quantized value of described second reference information bag transmit power offset amount.
Determine a device for the through-put power accessing channel, comprising:
First processor, for being sent to the first reference information of described terminal after once succeeding in sending up probe before obtaining by Access Network, the signal parameter of the probe once succeeded in sending up before described first reference information comprises and Access Network successfully receive the signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described first reference information comprises transmit power offset amount; Or, the quantized value of described first reference information bag transmit power offset amount;
Second processor, for determining the transmitting power of this probe according to described first reference information;
Reflector, for launching this probe according to the transmitting power of described this probe determined.
Determine a device for the through-put power accessing channel, comprising:
Receiver, for this probe that receiving terminal sends;
Reflector, for send include the second reference information response message to described terminal, the transmitting power of next probe is determined according to described reference information to make described terminal, described second reference information comprises the signal parameter of the probe that this succeeds in sending up and Access Network and successfully receives signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described second reference information comprises transmit power offset amount; Or, the quantized value of described second reference information bag transmit power offset amount.
A kind of method and device determining the through-put power of probe that the embodiment of the present invention provides, sent to the first reference information of described terminal by Access Network after once succeeding in sending up probe before being obtained by terminal, then described terminal determines the transmitting power of this probe according to described first reference information, and launches this probe according to the transmitting power of this probe described.The parameters such as the broadcasted values only issued according to self Received signal strength situation and AN with AT in prior art estimate the transmitting power of probe, can not accurately determine the transmitting power of probe, if the transmitting power of probe is too small, thus can strengthen the access delay of AT; If the transmitting power of probe is excessive, then can increase and the interference of same other AT of community is compared, the reference information fed back by AN utilizing the scheme provided in the embodiment of the present invention can succeed in sending up rear storage according to a front probe determines the transmitting power of probe, thus the transmitting power of probe can be determined more accurately, the access delay reducing AT or the interference that can reduce same other AT of community.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of access probe sequence transmission probe of the prior art;
A kind of flow chart determining the method for the through-put power of probe that Fig. 2 provides for the embodiment of the present invention 1;
Fig. 3 determines the flow chart of the method for the through-put power of probe for another kind that the embodiment of the present invention 1 provides;
A kind of block diagram determining the device of the through-put power of probe that Fig. 4 provides for the embodiment of the present invention 1;
Fig. 5 determines the block diagram of the device of the through-put power of probe for another kind that the embodiment of the present invention 1 provides;
A kind of flow chart determining the method for the through-put power of probe that Fig. 6 provides for the embodiment of the present invention 2;
A kind of block diagram determining the device of the through-put power of probe that Fig. 7 provides for the embodiment of the present invention 3.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
The embodiment of the present invention provides a kind of method determining the through-put power of probe, and as shown in Figure 2, the method comprises:
Step 101, sent to the first reference information of described terminal by Access Network after terminal once succeeds in sending up probe before obtaining, the signal parameter of the probe once succeeded in sending up before described first reference information comprises described terminal and described Access Network successfully receive the signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described first reference information comprises transmit power offset amount; Or described first reference information comprises the quantized value of transmit power offset amount;
Step 102, described terminal determines the transmitting power of this probe according to described first reference information;
Step 103, described terminal launches this probe according to the transmitting power of described this probe determined.
Executive agent in the above-mentioned method determining the through-put power of probe can be terminal, such as AT.
The embodiment of the present invention also provides another kind to determine the method for the through-put power of probe, and as shown in Figure 3, the method comprises:
Step 201, this probe that receiving terminal sends;
Step 202, transmission includes the response message of the second reference information to described terminal, the transmitting power of next probe is determined according to described reference information to make described terminal, described second reference information comprises the signal parameter of the probe that this succeeds in sending up and Access Network and successfully receives signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described second reference information comprises transmit power offset amount; Or, the quantized value of described second reference information bag transmit power offset amount.
Executive agent in the above-mentioned method determining the through-put power of probe can be AN, can be specifically base station.
Because the parameters such as the broadcasted values that AT in prior art only issues according to self Received signal strength situation and AN estimate the transmitting power of probe, can accurately not determine the transmitting power of probe, if the transmitting power of probe is too small, thus the access delay of AT can be strengthened; If the transmitting power of probe is excessive, then can increase the interference to same other AT of community.Compared to existing technology, utilize the scheme provided in the embodiment of the present invention can succeed in sending up the reference information of rear storage according to a front probe, the transmitting power of probe can be determined more accurately, thus the access delay reducing AT or the interference reduced same other AT of community.
In order to realize a kind of above-mentioned method determining the through-put power of probe, the invention provides a kind of device determining the through-put power of probe, this device can be terminal, can be specifically AT as shown in Figure 4, this device comprises: first processor 301, the second processor 302, reflector 303.
First processor 301, for being sent to the first reference information of described terminal after once succeeding in sending up probe before obtaining by Access Network; The signal parameter of the probe once succeeded in sending up before described first reference information comprises and Access Network successfully receive the signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described first reference information comprises transmit power offset amount; Or, the quantized value of described first reference information bag transmit power offset amount;
Second processor 302, for determining the transmitting power of this probe according to described first reference information;
Reflector 303, for launching this probe according to the transmitting power of described this probe determined.
The present invention also provides a kind of device determining the through-put power of probe, and this device can be AN, can be specifically base station, and as shown in Figure 5, this device comprises: receiver 401, reflector 402.
Receiver 401, for this probe that receiving terminal sends;
Reflector 402, for send include the second reference information response message to described terminal, the transmitting power of next probe is determined according to described reference information to make described terminal, described second reference information comprises the signal parameter of the probe that this succeeds in sending up and Access Network and successfully receives signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described second reference information comprises transmit power offset amount; Or, the quantized value of described second reference information bag transmit power offset amount.
A kind of device determining the through-put power of probe that the embodiment of the present invention provides, sent to the first reference information of described terminal by Access Network after once succeeding in sending up probe before being obtained by first processor, then the transmitting power of this probe determined by the second processor according to described first reference information, by reflector, the transmitting power according to described this probe determined launched this probe.Compared with prior art, the reference information fed back by AN utilizing the scheme provided in the embodiment of the present invention can succeed in sending up rear storage according to a front probe determines the transmitting power of probe, thus the transmitting power of probe can be determined more accurately, the access delay reducing AT or the interference reduced same other AT of community.
Embodiment 2
The embodiment of the present invention provides a kind of method determining the through-put power of probe, and as shown in Figure 6, the method comprises:
Step 501, sent to first reference information of AT by AN after AT once succeeds in sending up probe before obtaining, the signal parameter of the probe once succeeded in sending up before described first reference information comprises and Access Network AN successfully receive the signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described first reference information comprises transmit power offset amount; Or, the quantized value of described first reference information bag transmit power offset amount.
Alternatively, before step 501, may further include: described terminal receives described AN for the response message sent after once succeeding in sending up probe before described terminal, comprises the first reference information in described response message; Described terminal preserves described first reference information.
Particularly, described AN can send a response message carrying reference information to described AT, after described AT receives response message, can preserve the reference information carried in described response message after successfully receiving the probe of the access attempts that described AT sends at every turn.In the step 501 of the present embodiment, described reference information is, after once succeeding in sending up probe before described AT, sent to the reference information of described AT, be called as the first reference information in the present embodiment by described AN.
When the signal parameter of the probe once succeeded in sending up before described is the probe of described AN access attempts before successfully receiving, described signal parameter is obtained at its receiver by described AN, described signal parameter is signal strength signal intensity or signal to noise ratio, also can be other signal index, the present invention limit.
The described AN signal parameter successfully received required for probe is to enable described AN successfully receive and the probe that described in demodulation, AT launches, described probe at the receiver place of described AN need the described signal parameter that reaches, described signal parameter can be obtained by the interference of the sensitivity of network receiver, current environment and noise situations etc., belongs to prior art.
Described transmit power offset amount is calculated by described AN, and described transmit power offset amount successfully receives the difference of the signal parameter required for probe for the signal parameter of probe that once succeeds in sending up before described and described AN; Or, described transmit power offset amount for described successfully receive signal parameter required for probe and described before the difference of the signal parameter of probe that once succeeds in sending up.
A kind of method example obtaining the quantized value of described transmit power offset amount is C=[B/P], and wherein, described C is the quantized value of described transmit power offset amount, is specially C1 or C2 at invention the present embodiment; Described B is described transmit power offset amount, is specially B1 or B2 at invention the present embodiment; Described P is quantization step, and described quantization step is for described AN and described AT joint consultation or chosen by described AN and by AT described in broadcast or special message informing; Described [] is for rounding symbol.It should be noted that, the quantized value of described transmit power offset amount also can be calculated according to described transmit power offset amount by additive method.
Step 502, described AT determines the transmitting power of this probe according to described first reference information;
Below according to described first reference information, point three kinds of situations are determined that the method for the transmitting power of this probe is introduced to described AT:
(1) if the signal parameter of probe that once succeeds in sending up before comprising of described first reference information and Access Network AN successfully receive the signal parameter needed for probe, described signal parameter is signal strength signal intensity or signal to noise ratio, then according to the first reference information, AT determines that the transmitting power of this probe can adopt any one scheme following:
Scheme one
Obtain described before the signal parameter of probe that once succeeds in sending up and described AN successfully receive the difference A1 of the signal parameter required for probe;
According to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old-A1*n determines the transmitting power of this probe described.
Wherein, described Y is the transmitting power of this probe described; Described X
0for the Initial Trans of the current access probe sequence at this probe place described, it can obtain according to computational methods of the prior art; Described i is the sequence number of this probe in the probe sequence at place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, by that analogy; Described PowerStep is power step size, gives described AT by base station broadcast; The sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts; Described n is weight coefficient, can for the number being more than or equal to 1; Or,
Scheme two
Obtain described AN successfully receive signal parameter required for probe and described before the difference A2 of the signal parameter of probe that once succeeds in sending up;
According to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old+ A2*n determines the transmitting power of this probe described.
Wherein, described Y is the transmitting power of this probe described; Described X
0for the Initial Trans of the current access probe sequence at this probe place described, it can obtain according to computational methods of the prior art; Described i is the sequence number of this probe in the probe sequence at place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, and by that analogy, described PowerStep is power step size, gives described AT by base station broadcast; The sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts; Described n is weight coefficient, can for the number being more than or equal to 1.
Alternatively, in such scheme one or scheme two, AT can by regulation bound A (in embodiments of the present invention, be in particular A1 or A2) value be limited in certain scope, if the value of the A that Practical Calculation goes out (representing with A ' below) is more than or equal to set upper limit value, then the value of A is taken as and equals described higher limit; If the A ' that Practical Calculation goes out is less than or equal to the lower limit of regulation, then the value of A is taken as and equals described lower limit; If the A ' calculated is between set upper limit value and lower limit, then the value of A is taken as the value equaling described A '.
(2) if the first reference information comprises transmit power offset amount, then according to described first reference information, AT determines that the transmitting power of this probe described comprises:
When described transmit power offset amount successfully receives the difference B1 of the signal parameter required for probe for the signal parameter of probe that once succeeds in sending up before described and described AN, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStepold-B1*n determines the transmitting power of this probe described.
Wherein, described Y is the transmitting power of this probe described; Described X
0for the Initial Trans of the current access probe sequence at this probe place described, it can obtain according to computational methods of the prior art; Described i is the sequence number of this probe in the probe sequence at place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, by that analogy; Described PowerStep is power step size, gives described AT by base station broadcast; The sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts; Described n is weight coefficient, can for the number being more than or equal to 1.
Or,
When described transmit power offset amount for described AN successfully receive signal parameter required for probe and described before once succeed in sending up the difference B2 of the signal parameter of probe time, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStepold+B2*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described; Described X
0for the Initial Trans of the current access probe sequence at this probe place described, it can obtain according to computational methods of the prior art; Described i is the sequence number of this probe in the probe sequence at place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, by that analogy; Described PowerStep is power step size, gives described AT by base station broadcast; The sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts; Described n is weight coefficient, can for the number being more than or equal to 1.
It should be noted that, AT can by regulation bound B (in embodiments of the present invention, be in particular B1 or B2) value be limited in certain scope, if the value of the B that Practical Calculation goes out (representing with B ' below) is more than or equal to set upper limit value, then the value of B is taken as and equals described higher limit; If the B ' that Practical Calculation goes out is less than or equal to the lower limit of regulation, then the value of B is taken as and equals described lower limit; If the B ' calculated is between set upper limit value and lower limit, then the value of B is taken as and equals described B '.
(3) if the quantized value of described first reference information bag transmit power offset amount, then according to described first reference information, AT determines that the transmitting power of this probe described comprises:
When the quantized value of described transmit power offset amount successfully receives the quantized value C1 of the difference of the signal parameter required for probe for the signal parameter of probe that once succeeds in sending up before described and described AN, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old-C1*P*n determines the transmitting power of this probe described.
Wherein, described Y is the transmitting power of this probe described; Described X
0for the Initial Trans of the current access probe sequence at this probe place described, it can obtain according to computational methods of the prior art; Described i is the sequence number of this probe in the probe sequence at place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, and by that analogy, described PowerStep is power step size, gives described AT by base station broadcast; The sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts; Described P is quantization step; By described AN and described AT joint consultation or obtained from described AN by described AT; Described n is weight coefficient, can for the number being more than or equal to 1;
Or,
When described transmit power offset amount quantized value for described AN successfully receive signal parameter required for probe and described before once succeed in sending up the quantized value C2 of the difference of the signal parameter of probe time, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old+ C2*P*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described; Described X
0for the Initial Trans of the current access probe sequence at this probe place described, it can obtain according to computational methods of the prior art; Described i is the sequence number of this probe in the probe sequence at place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, by that analogy; Described PowerStep is power step size; Described AT is given by base station broadcast; The sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts; Described P is quantization step, by described AN and described AT joint consultation or obtained from described AN by described AT; Described n is weight coefficient, can for the number being more than or equal to 1.
It should be noted that, AT can by regulation bound C (in embodiments of the present invention, be in particular C1 or C2) value be limited in certain scope, if the value of the C that Practical Calculation goes out (representing with C ' below) is more than or equal to set upper limit, then the value of C is taken as and equals described higher limit; If the described C ' that Practical Calculation goes out is less than or equal to the lower limit of regulation, then the value of C is taken as and equals described lower limit; If the C ' calculated is between set upper limit value and lower limit, then the value of C is taken as C '.
General, described n in above-mentioned three kinds of combinations is weight coefficient, described AT can determine this coefficient according to actual conditions, such as, if the moment including the response message of the first reference information that described AT receives previous access attempts is more of a specified duration apart from current time, then described n can arrange smaller by described AT, and such as, described n can be set to 1 by described AT.Described X in above-mentioned three kinds of combinations
0for the Initial Trans of the current access probe sequence at this probe place described, it can obtain according to computational methods of the prior art, such as, and X
0=-Mean Rx Power+OpenLoopAdjust+OLAOffset+ProbeIntialAdjust, wherein, X
0for the Initial Trans of access probe sequence, Mean Rx Power is mean receiving power, the mean receiving power measured during probe emission by AT wireless device; OpenLoopAdjust is the nominal power of open-loop power estimated value, the broadcasted values issued in HRPD system by AN; OLAOffset is the skew of open-loop power estimated value, AT upgraded this value before each probe sequence of transmitting, this value pilot frequency intensity that to be AT send the sector of access exploration according to AN broadcast parameter, last transmitting power on reverse traffic channel or access channel and AT obtains, ProbeIntialAdjus t is that access exploration initially adjusts parameter, the broadcasted values issued in HRPD system by AN.
In addition, it should be noted that, the moment distance current time including the response message of the first reference information receiving previous access attempts as described AT exceedes certain time interval, then described AT can think that described first reference information does not have reference value, and conventionally determines the transmitting power of probe.
Step 503, described AT launches this probe according to the transmitting power of described this probe determined;
Step 504, described AN receives this probe that described AT sends;
The transmitting power comparing the probe conventionally obtained due to the transmitting power of this probe described in after according to described first reference information adjustment is more accurate, this probe of launching in the transmitting power according to this probe described is made successfully to receive the signal parameter needed for probe at the signal parameter arriving AN place closer to described AN, so the probability that described AN successfully can receive this probe that described AT sends is larger, the access delay of AT can be decreased.And the signal parameter arriving AN place due to this probe successfully receives signal parameter needed for probe closer to described AN, and certain degree decreases the interference of described AT to other AT of same community.
Step 505, described AN transmission includes the response message of the second reference information to described AT, described second reference information comprises the signal parameter of the probe that this succeeds in sending up and Access Network AN and successfully receives signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described second reference information comprises transmit power offset amount; Or, the quantized value of described second reference information bag transmit power offset amount;
The signal parameter of the described probe that this succeeds in sending up is that described AN is when successfully receiving the probe of this access attempts, described signal parameter is obtained at its receiver by described AN, described signal parameter is signal strength signal intensity or signal to noise ratio, also can be other signal index;
The described AN signal parameter successfully received required for probe is to enable described AN successfully receive and the probe that described in demodulation, AT launches, described probe at the receiver place of described AN need the described signal parameter that reaches, described signal parameter can be obtained by the interference of the sensitivity of network receiver, current environment and noise situations etc., belongs to prior art.
Described transmit power offset amount is calculated by described AN, and the signal parameter that described transmit power offset amount is this probe succeeded in sending up described and described AN successfully receive the difference of the signal parameter required for probe; Or described transmit power offset amount is the described difference successfully receiving the signal parameter of signal parameter required for probe and described this probe received.
A kind of method example obtaining the quantized value of described transmit power offset amount is C=[B/P], and wherein, described C (in embodiments of the present invention, being in particular C1 or C2) is the quantized value of described transmit power offset amount; Described B (in embodiments of the present invention, being in particular B1 or B2) is described transmit power offset amount; Described P is quantization step, and described quantization step is for described AN and described AT joint consultation or chosen by described AN and by AT described in broadcast or special message informing; Described [] is for rounding symbol.The quantized value of described transmit power offset amount also can be calculated according to described transmit power offset amount by additive method.
It should be noted that, described AT can by regulation bound described B (in embodiments of the present invention, be in particular B1 or B2) value be limited in certain scope, if Practical Calculation go out the value (representing with B ' below) of B be more than or equal to set upper limit value, then the value of B is taken as and equals described higher limit; If the B ' that Practical Calculation goes out is less than or equal to the lower limit of regulation, then the value of B is taken as and equals described lower limit; If the B ' calculated is between set upper limit value and lower limit, then the value of B is taken as and equals described B '.
Described AT can by regulation bound C (in embodiments of the present invention, be in particular C1 or C2) value be limited in certain scope, if the value of the C that Practical Calculation goes out (representing with C ' below) is more than or equal to set upper limit, then the value of C is taken as and equals described higher limit; If the described C ' that Practical Calculation goes out is less than or equal to the lower limit of regulation, then the value of C is taken as and equals described lower limit; If the C ' calculated is between set upper limit value and lower limit, then the value of C is taken as C '.
Step 506, described AT receives the response message including the second reference information that described AN sends, and preserves the second reference information in described response message.
Described AT is after this probe of transmitting, the response message sent after AN described in wait-receiving mode is received this probe, such as, described response message is ACAck, if described AT does not also receive response message after the regular hour, then described AT increases the transmitting power of probe and launches once probe, until described AT receives the response message of described AN, or till reaching maximum probe emission quantity Np after waiting for the duration.
If the access probe quantity of launching also does not receive the response of described AN when reaching described Np, then described AT starts the transmitting of next access probe sequence after will waiting for one period of duration, from step 501, namely again determine the transmitting power of probe.If the quantity of the access probe sequence of launching also does not receive the response message of described AN when reaching Ns, then this access attempts is unsuccessfully to terminate.Wherein said Np is the broadcasted values issued in HRPD system by described AN, and described Ns is consulted to obtain by described AN and described AT, and default value is 3.
Because the parameters such as the broadcasted values that AT in prior art only issues according to self Received signal strength situation and AN estimate the transmitting power of probe, can accurately not determine the transmitting power of probe, if the transmitting power of probe is too small, thus the access delay of AT can be strengthened; If the transmitting power of probe is excessive, then can increase the interference to same other AT of community.Compared with prior art, the reference information fed back by AN that the scheme provided in the embodiment of the present invention can succeed in sending up rear storage according to a front probe determines the transmitting power of probe, thus the transmitting power of probe can be determined more accurately, the access delay reducing AT or the interference reduced same other AT of community.
Embodiment 3
The embodiment of the present invention provides a kind of device determining the through-put power of probe, and this device can be terminal, can be specifically AT, and as shown in Figure 7, this device comprises: receiver 601, memory 602, first processor 603, the second processor 604, reflector 613.
First processor 603, for being sent to the first reference information of described terminal after once succeeding in sending up probe before obtaining by Access Network; The signal parameter of the probe once succeeded in sending up before described first reference information comprises and Access Network successfully receive the signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described first reference information comprises transmit power offset amount; Or, the quantized value of described first reference information bag transmit power offset amount;
If after once succeeding in sending up probe front, described AT stores reference information, then need receiver 601, for the response message sent after receiving the probe once launched before Access Network receives terminal, comprises described first reference information in described response message; Memory 602, for preserving described first reference information; Otherwise conventionally determine the transmitting power of this probe.
Second processor 604, for determining the transmitting power of this probe according to described first reference information;
Described second processor 604 specifically comprises: the first acquisition module 605, first adjusting module 606, second acquisition module 607, second adjusting module the 608, three adjusting module the 609, four adjusting module the 610, five adjusting module the 611, six adjusting module 612.
If when the signal parameter of the probe once succeeded in sending up before described first reference information comprises and Access Network AN successfully receive the signal parameter needed for probe, described signal parameter is signal strength signal intensity or signal to noise ratio, first acquisition module 605 obtain described before the signal parameter of probe that once succeeds in sending up and described AN successfully receive the difference A1 of the signal parameter required for probe, then the first adjusting module 606 is according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old-A1*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of the current access probe sequence at this probe place described, it can obtain according to computational methods of the prior art; Described i is the sequence number of this probe in the probe sequence at place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, by that analogy; Described PowerStep is power step size, gives described AT by base station broadcast; The sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts, described n is weight coefficient, can for the number being more than or equal to 1;
Or, the second acquisition module 607 obtain described AN successfully receive signal parameter required for probe and described before the difference A2 of the signal parameter of probe that once succeeds in sending up, then the second adjusting module 608 is according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old+ A2*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, it can obtain according to computational methods of the prior art; Described i is the sequence number in the probe sequence at this probe place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, by that analogy; Described PowerStep is power step size, gives described AT by base station broadcast; Described j is the sequence number of probe in the probe sequence at place that a front merit is launched; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts; Described n is weight coefficient, can for the number being more than or equal to 1.
If when described first reference information comprises transmit power offset amount, 3rd adjusting module 609 for when described transmit power offset amount successfully receives the difference B1 of the signal parameter of probe for the signal parameter of probe that once succeeds in sending up before described and described AN, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStepold-B1*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, it can obtain according to computational methods of the prior art; Described i is the sequence number in the probe sequence at this probe place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, by that analogy; Described PowerStep is power step size, gives described AT by base station broadcast; The sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts; Described n is weight coefficient, can for the number being more than or equal to 1;
Or, the 4th adjusting module 610 for when described transmit power offset amount for described AN successfully receive probe signal parameter and described before once succeed in sending up the difference B2 of the signal parameter of probe time, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStepold+B2*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, it can obtain according to computational methods of the prior art; Described i is the sequence number in the probe sequence at this probe place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, by that analogy; Described PowerStep is power step size, gives described AT by base station broadcast; The sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts; Described n is weight coefficient, can for the number being more than or equal to 1.
If during the quantized value of described first reference information bag transmit power offset amount, 5th adjusting module 611 for when the quantized value of described transmit power offset amount successfully receives the quantized value C1 of the difference of the signal parameter of probe for the signal parameter of probe that once succeeds in sending up before described and described AN, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old-C1*P*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, it can obtain according to computational methods of the prior art; Described i is the sequence number in the probe sequence at this probe place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, by that analogy; Described PowerStep is power step size, gives described AT by base station broadcast; The sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts; Described P is quantization step, and by described AN and described AT joint consultation or obtained from described AN by described AT, described n is weight coefficient, can for the number being more than or equal to 1;
Or, the 6th adjusting module 612, for when described transmit power offset amount quantized value for described AN successfully receive probe signal parameter and described before once succeed in sending up the quantized value C2 of the difference of the signal parameter of probe time, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old+ C2*P*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, it can obtain according to computational methods of the prior art; Described i is the sequence number in the probe sequence at this probe place, and the i that first probe in described probe sequence is corresponding is 1, second i that probe is corresponding is 2, by that analogy; Described PowerStep is power step size, gives described AT by base station broadcast; The sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place; Described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts; Described P is quantization step, and by described AN and described AT joint consultation or obtained from described AN by described AT, described n is weight coefficient, can for the number being more than or equal to 1.
Reflector 613, for launching this probe according to the transmitting power of described this probe determined.
After described AN successfully have received this probe described in transmitting, described AN launches the response message including reference information, and described response message indicates described AT to stop launching this probe sequence.Described receiver 601, also for receiving the response message including the second reference information sent after described Access Network receives this probe described, described memory 602, also for preserving described second reference information.
The embodiment of the present invention provides another kind to determine the device of the through-put power of probe, and this device can be specifically described AN, can be specifically base station, with reference to shown in Fig. 5,
Receiver 401, for this probe that receiving terminal sends;
After described receiver 401 receives this probe of AT transmission, reflector 402, for send include the second reference information response message to described terminal, the transmitting power of next probe is determined according to described reference information to make described terminal, described second reference information comprises the signal parameter of the probe that this succeeds in sending up and Access Network and successfully receives signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described second reference information comprises transmit power offset amount; Or, the quantized value of described second reference information bag transmit power offset amount.
The signal parameter that described transmit power offset amount is this probe succeeded in sending up described and described AN successfully receive the difference of the signal parameter required for probe; Or,
Described transmit power offset amount successfully receives the difference of the signal parameter of signal parameter required for probe and the described probe that this succeeds in sending up for described AN.
The quantized value of described transmitting side-play amount is the quantized value that the signal parameter of this probe succeeded in sending up described and described AN successfully receive the difference of the signal parameter required for probe; Or,
The quantized value of described transmit power offset amount successfully receives the quantized value of the difference of the signal parameter of signal parameter required for probe and the described probe that this succeeds in sending up for described AN.
Because the parameters such as the broadcasted values that AT in prior art only issues according to self Received signal strength situation and AN estimate the transmitting power of probe, can accurately not determine the transmitting power of probe, if the transmitting power of probe is too small, thus the access delay of AT can be strengthened; If the transmitting power of probe is excessive, then can increase the interference to same other AT of community, compared with prior art, the scheme provided in the embodiment of the present invention can according to front once succeed in sending up probe after the reference information that stores determine the transmitting power of probe exactly, reduce the access delay of AT, or decrease the interference of described AT to other AT of same minizone to a certain extent.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (6)
1. determine a method for the through-put power of probe, it is characterized in that, comprising:
Sent to the first reference information of described terminal by Access Network after terminal once succeeds in sending up probe before obtaining, the signal parameter of the probe once succeeded in sending up before described first reference information comprises terminal and Access Network successfully receive the signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described first reference information comprises transmit power offset amount; Or described first reference information comprises the quantized value of transmit power offset amount;
Described terminal determines the transmitting power of this probe according to described first reference information;
Described terminal launches this probe according to the transmitting power of described this probe determined;
If the signal parameter of the probe once succeeded in sending up before described first reference information comprises and Access Network successfully receive the signal parameter required for probe, described signal parameter is signal strength signal intensity or signal to noise ratio, then according to described first reference information, described terminal determines that the transmitting power of this probe comprises:
Obtain described before the signal parameter of probe that once succeeds in sending up and described Access Network successfully receive the difference A1 of the signal parameter required for probe;
According to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old-A1*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, and described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts, described n is weight coefficient;
Or, obtain described Access Network successfully receive signal parameter required for probe and described before the difference A2 of the signal parameter of probe that once succeeds in sending up;
According to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old+ A2*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, and described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStep
oldfor the probe once succeeded in sending up before calculating adopt the power step size value of transmitting power, described n is weight coefficient;
If described first reference information comprises transmit power offset amount, then according to described first reference information, described terminal determines that the transmitting power of this probe comprises:
When described transmit power offset amount successfully receives the difference B1 of the signal parameter required for probe for the signal parameter of probe that once succeeds in sending up before described and described Access Network, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old-B1*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, and described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts, described n is weight coefficient;
Or, when described transmit power offset amount for described Access Network successfully receive signal parameter required for probe and described before once succeed in sending up the difference B2 of the signal parameter of probe time, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old+ B2*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, and described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStep
oldfor the probe once succeeded in sending up before calculating adopt the power step size value of transmitting power, described n is weight coefficient;
If when described first reference information comprises the quantized value of transmit power offset amount, then according to described first reference information, described terminal determines that the transmitting power of this probe comprises:
When the quantized value of described transmit power offset amount successfully receives the quantized value C1 of the difference of the signal parameter required for probe for the signal parameter of probe that once succeeds in sending up before described and described Access Network, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
oldthe Initial Trans of this probe described is adjusted to the transmitting power of this probe by-C1*P*n;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, and described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStep
oldfor the probe once succeeded in sending up before calculating adopt the power step size value of transmitting power, described P is quantization step, and described n is weight coefficient;
Or, when described transmit power offset amount quantized value for described Access Network successfully receive signal parameter required for probe and described before once succeed in sending up the quantized value C2 of the difference of the signal parameter of probe time, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old+ C2*P*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, and described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStep
oldfor the probe once succeeded in sending up before calculating adopt the power step size value of transmitting power, described P is quantization step, and described n is weight coefficient.
2. a kind of method determining the through-put power of probe according to claim 1, is characterized in that, before being sent to the first reference information of described terminal, also comprises before described terminal obtains after once succeeding in sending up probe by Access Network:
Described terminal receives described Access Network for the response message sent after once succeeding in sending up probe before described terminal, comprises described first reference information in described response message;
Described terminal preserves described first reference information.
3. a kind of method determining the through-put power of probe according to claim 1, is characterized in that, also comprise:
Terminal receives the response message including the second reference information sent after described Access Network receives this probe described, and preserves described second reference information.
4. determine a device for the through-put power of probe, it is characterized in that, comprising:
First processor, for being sent to the first reference information of terminal after once succeeding in sending up probe before obtaining by Access Network; The signal parameter of the probe once succeeded in sending up before described first reference information comprises and Access Network successfully receive the signal parameter needed for probe, and described signal parameter is signal strength signal intensity or signal to noise ratio; Or described first reference information comprises transmit power offset amount; Or, the quantized value of described first reference information bag transmit power offset amount;
Second processor, for determining the transmitting power of this probe according to described first reference information;
Reflector, for launching this probe according to the transmitting power of described this probe determined;
If described first reference information comprise described before the signal parameter of probe that once succeeds in sending up and described successfully receive required for probe signal parameter time, described signal parameter is signal strength signal intensity or signal to noise ratio, and described second processor comprises:
First acquisition module, for obtain described before the signal parameter of probe that once succeeds in sending up and described Access Network successfully receive the difference A1 of the signal parameter of probe;
First adjusting module, for according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old-A1*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, and described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStep
oldfor the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts, described n is weight coefficient;
Or, the second acquisition module, for obtain described Access Network successfully receive probe signal parameter and described before the difference A2 of the signal parameter of probe that once succeeds in sending up;
Second adjusting module, for according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old+ A2*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, and described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStep
oldfor calculating the power step size value of the transmitting power of the probe employing succeeded in sending up, described n is weight coefficient;
If when described first reference information comprises transmit power offset amount, then described second processor comprises:
3rd adjusting module, for when described transmit power offset amount successfully receives the difference B1 of the signal parameter of probe for the signal parameter of probe that once succeeds in sending up before described and described Access Network, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old-B1*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStepold is the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts, and described n is weight coefficient;
Or, the 4th adjusting module, for when described transmit power offset amount for described Access Network successfully receive probe signal parameter and described before once succeed in sending up the difference B2 of the signal parameter of probe time, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStepold+B2*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStepold is the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts, and described n is weight coefficient;
If when described first reference information comprises the quantized value of transmit power offset amount, described second processor comprises:
5th adjusting module, for when the quantized value of described transmit power offset amount successfully receives the quantized value C1 of the difference of the signal parameter of probe for the signal parameter of probe that once succeeds in sending up before described and described Access Network, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old-C1*P*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStepold is the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts, described P is quantization step, and described n is weight coefficient;
Or, the 6th adjusting module, for when described transmit power offset amount quantized value for described Access Network successfully receive probe signal parameter and described before once succeed in sending up the quantized value C2 of the difference of the signal parameter of probe time, according to Y=X
0+ (i-1) * PowerStep+ (j-1) * PowerStep
old+ C2*P*n determines the transmitting power of this probe described;
Wherein, described Y is the transmitting power of this probe described, described X
0for the Initial Trans of this probe described, described i is the sequence number in the probe sequence at this probe place, described PowerStep is power step size, the sequence number of the probe that described j once succeeds in sending up before being in the probe sequence at place, described PowerStepold is the power step size value of the transmitting power that the probe once succeeded in sending up before calculating adopts, described P is quantization step, and described n is weight coefficient.
5. a kind of device determining the through-put power of probe according to claim 4, it is characterized in that, this device also comprises:
Receiver, for the response message sent after receiving the probe once launched before Access Network receives terminal, comprises described first reference information in described response message;
Memory, for preserving described first reference information.
6. a kind of device determining the through-put power of probe according to claim 4, it is characterized in that, this device also comprises:
Receiver, for receiving the response message including the second reference information sent after described Access Network receives this probe described;
Memory, for preserving described second reference information.
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