CN100377509C - Method for confirming carrier reverse channel initial transmitting power - Google Patents
Method for confirming carrier reverse channel initial transmitting power Download PDFInfo
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- CN100377509C CN100377509C CNB200510126118XA CN200510126118A CN100377509C CN 100377509 C CN100377509 C CN 100377509C CN B200510126118X A CNB200510126118X A CN B200510126118XA CN 200510126118 A CN200510126118 A CN 200510126118A CN 100377509 C CN100377509 C CN 100377509C
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- 230000005540 biological transmission Effects 0.000 claims description 36
- 239000000969 carrier Substances 0.000 claims description 21
- 230000011664 signaling Effects 0.000 claims description 8
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/16—Deriving transmission power values from another channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
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Abstract
The present invention relates to a method for determining the initial transmitting power of a carrier wave reverse channel. The present invention mainly comprises: in a multi-carrier system of already existing reverse carrier waves, when reverse carrier waves need to be reestablished, the initial transmitting power of a reverse channel for the reestablished reverse carrier waves is determined according to the transmitting power of the pilot frequency of a service channel of the already existing reverse carrier waves or receiving power corresponding to the pilot frequency of forward carrier waves. The present invention can work out the pilot frequency power of the service channel of the reestablished reverse carrier waves according to the transmitting power of the currently existing reverse carrier waves; therefore, the present invention has the advantages of rapidly converging power as possible, decreasing system interference and improving the stable speed of wireless communication.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a method for determining initial transmitting power of a newly added carrier reverse channel in a wireless communication system.
Background
In a wireless mobile communication system, a terminal generally completes transmission of initial signaling or a short message through a reverse access channel. Since no bidirectional association is established between the terminal and the system before, the terminal can only complete the power setting of the access channel according to the open loop power control and determine the reverse transmission power.
The open loop power value depends on the path loss and the reverse load of a forward link, and if the reverse load is high, the access is carried out with higher power so as to ensure the access success rate and shorten the access time delay; conversely, if the reverse load is light, access can be made with less power without causing excessive interference.
In the system, for the current reverse load situation, the system will usually broadcast in a system message, so that the terminal can determine the access power by open loop power control according to the load situation. However, the broadcast of the system messages is usually spaced at relatively long intervals, so that the broadcast messages cannot accurately reflect the rapid change of the reverse load in time. Therefore, the open-loop power of the access channel determined based on the reverse load condition cannot be accurately obtained, and further, reasonable reverse transmission power cannot be determined.
In the following, the CDMA 20001X EV-DO system is taken as an example of a method for adjusting the reverse channel transmission power in a wireless communication system.
According to the protocol, the transmission power Y of the ith access probe of the reverse access channel of the EV-DO (system enhanced on data service for CDMA 20001X) system is generated by the following formula:
Y＝X0+(i-1)×PoweStep；
wherein:
X0＝-Mean_Rx_Power(dBm)+OpenLoopAdjust+ProbeInitialAdjust；
the PowerStep (power increment), OpenLoopAdjust (open loop adjustment) and ProbelnitialAdjust (access probe initial adjustment) parameters referred to in the above two equations are all fields in the forward AccessParameters message. The specific values of the parameters are determined by AN Access Network (AN) and are issued to the access terminal through the access parameters message, so that the access terminal can obtain corresponding parameter information from the access parameters message and further calculate and obtain the transmission power Y of the access probe.
In the system, the AN must not transmit the Access parameters messages more than NACMPAccessParametersAnd a time slot. General formula NACMPAccessParametersDefault value of 768.
As can be seen from the foregoing description, in the above wireless communication system, only the calculation method of the reverse access channel transmission power is defined. However, for the existing reverse carrier reverse service dedicated channel, the method for calculating the initial transmitting power of the newly added carrier does not provide a specific implementation scheme.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a method for determining initial transmit power of a carrier reverse channel, so as to converge the power as fast as possible, reduce system interference, and improve the speed of stabilizing wireless communication.
The purpose of the invention is realized by the following technical scheme:
the invention provides a method for determining the initial transmitting power of a carrier reverse channel, which comprises the following steps:
in the multi-carrier system with the existing reference reverse carrier, when a new reverse carrier is needed, the initial transmission power of the reverse channel of the new reverse carrier is determined according to the estimated value of the transmission power of the traffic channel pilot frequency of the existing reference reverse carrier.
The existing reference reverse carrier comprises: the system signals the terminal to assign some or all of the existing reverse carriers.
The method comprises the following steps:
the system appoints the reference reverse carrier of the terminal, and takes the transmitting power of the reference reverse carrier service channel pilot frequency as the benchmark of the initial transmitting power of the reverse channel of the newly-built reverse carrier.
The method further comprises the following steps:
and adopting a reverse carrier wave which is closest to the newly-built reverse carrier frequency interval as a reference reverse carrier wave.
The method comprises the following steps:
adopting the minimum value in the transmitting power of the traffic channel pilot frequency of all the reference reverse carriers as the initial transmitting power of the reverse channel of the newly-built reverse carrier;
or,
adopting the maximum value in the transmitting power of the traffic channel pilot frequency of all the reference reverse carriers as the initial transmitting power of the reverse channel of the newly-built reverse carrier;
or,
and adopting the weighted average value of the transmitting power of the traffic channel pilot frequency of all the reference reverse carriers as the initial transmitting power of the reverse channel of the newly-built reverse carrier.
In the method of the invention, when the weighted average is calculated, the corresponding weighted weight is issued by the system or is pre-assigned.
The invention provides another method for determining the initial transmitting power of a carrier reverse channel, which comprises the following steps:
in a multi-carrier system with a reference forward carrier and a reference reverse carrier, when a new reverse carrier is needed, determining the initial transmitting power of a reverse channel of the new reverse carrier according to the estimated values of the received powers of the existing reference forward carrier and the reference reverse carrier.
The method comprises the following steps:
determining the access parameters of the existing reference forward carrier FL 1: open loop Power adjustment OpenLoopAdjust _ FL1 and access probe initial adjustment probeinitialialidjust _ FL1, Pilot Power estimate Pilot _ Power _ FL1 of the reference forward carrier, and Pilot transmit Power estimate Pilot _ RL1 of traffic channel of reference reverse carrier RL1 corresponding thereto, and calculates Power reference values corresponding to the reference forward and reverse carrier pairs FL1/RL 1: reference _1 ═ PilotPower _ RL1+ Pilot _ Power _ FL1-OpenLoopAdjust _ FL 1-probeinitiaiadujust _ FL 1; or the system issues an adjustment parameter adjust parameter through signaling, wherein Reference _1 is PilotPower _ RL1+ Pilot _ Power _ FL1-adjust parameter, and the adjust parameter is determined according to the Pilot transmission Power of the Reference forward carrier, the Pilot transmission Power of the forward carrier corresponding to the newly-built reverse carrier, the average receiving Power of the Reference reverse carrier and the average receiving Power of the newly-built reverse carrier;
and calculating the initial transmitting power InitialPilotPower-RL of the traffic channel pilot frequency of the newly-built reverse carrier wave according to the power reference value corresponding to the front reverse carrier wave pair.
The method comprises the following steps:
selecting a Reference value Reference _3 corresponding to the existing front reverse carrier pair closest to the newly-built reverse carrier frequency interval, and calculating initial transmission power InitialPilotPower _ RL4 of the reverse newly-built carrier service channel pilot frequency as follows:
InitialPilotPower _ RL4 Reference _3- (Pilot _ Power _ FL4-OpenLoopAdjust _ FL 4-probeinitialpadjust _ FL 4); or, InitialPilotPower — RL4 ═ Reference _3-Pilot _ Power _ FL 4;
or,
selecting the weighted average of all reference traffic channel pilot powers as the initial transmission power InitialPilotPower _ RL4 of the reverse newly-built carrier traffic channel pilot, which is:
InitialPilotPower _ RL4 ═ K1 Reference _1+ K2 Reference _2+ K3 Reference _3- (Pilot _ Power _ FL4-OpenLoopAdjust _ FL 4-probeiniliaiailadjust _ FL 4); or, InitialPilotPower — RL4 ═ K1 Reference _1+ K2 Reference _2+ K3 Reference _3-Pilot _ Power _ FL 4;
wherein, K1, K2, and K3 are weight parameters, and can be agreed in advance or issued by the system.
The invention also provides a method for determining the initial transmitting power of the carrier reverse channel, which comprises the following steps:
when the reference reverse carrier exists, determining the initial transmitting power of the reverse channel of the newly-built reverse carrier according to the transmitting power of the service channel of the reference reverse carrier;
when no reference reverse carrier exists, determining the initial transmitting power of a reverse channel of a newly-built reverse carrier according to the receiving power of an existing reference forward carrier, wherein the existing reference forward carrier comprises: the system assigns some or all existing forward carriers to the terminal through signaling, or refers to the forward carrier corresponding to the reverse carrier and the forward carrier corresponding to the newly-built reverse carrier.
The step of determining the initial transmitting power of the reverse channel of the newly-built reverse carrier according to the receiving power of the reference forward carrier comprises the following steps:
determining the access parameters OpenLoopAdjust _ FL4 and ProbeInitialAdjust _ FL4 of the forward carrier and the Pilot Power Pilot _ Power _ FL4 of the forward carrier;
calculating initial transmitting power InitialPilotPower _ RL4 of the newly-built reverse carrier traffic channel pilot frequency as follows: InitialPilotPower _ RL4 ═ Pilot _ Power _ FL4+ OpenLoopAdjust _ FL4+ ProbeInitialAdjust _ FL4+ TrfficToAccessRatio, TrfficToAccessRatio is the ratio of traffic to access Power, which can be either pre-specified or network-delivered.
The invention also provides a method for determining the initial transmitting power of the carrier reverse channel, which comprises the following steps:
for a multi-carrier system with an existing reference forward carrier, when a new reverse carrier is needed, determining the initial transmitting power of a reverse channel of the new reverse carrier according to the estimated value of the receiving power of the existing reference forward carrier.
The already existing reference forward carrier includes: the system assigns some or all existing forward carriers to the terminal through signaling, or refers to the forward carrier corresponding to the reverse carrier and the forward carrier corresponding to the newly-built reverse carrier.
The method comprises the following steps:
determining the access parameters OpenLoopAdjust _ FL4 and ProbeInitialAdjust _ FL4 of the forward carrier and the Pilot Power Pilot _ Power _ FL4 of the forward carrier;
calculating initial transmitting power InitialPilotPower _ RL4 of the newly-built reverse carrier traffic channel pilot frequency as follows: InitialPilotPower _ RL4 ═ Pilot _ Power _ FL4+ OpenLoopAdjust _ FL4+ ProbeInitialAdjust _ FL4+ TrfficToAccessRatio, TrfficToAccessRatio is the ratio of traffic to access Power, which can be either pre-specified or network-delivered.
The technical scheme provided by the invention can be seen that the pilot frequency power of the service channel of the newly-built reverse carrier can be calculated according to the transmitting power of the current reverse carrier, so that the power can be converged as fast as possible, the system interference can be reduced, and the stable speed of wireless communication can be improved.
Drawings
Fig. 1 is a schematic diagram of a situation that an existing reverse carrier exists in a new reverse carrier in a same frequency band;
fig. 2 is a schematic diagram of a situation where no existing reverse carrier exists in the same frequency band for a newly-built reverse carrier;
fig. 3 is a process diagram of a specific implementation of the method of the present invention.
Detailed Description
The core of the invention is that in a multi-carrier system, the pilot frequency initial transmitting power of the service channel of other newly added reverse carriers is set through the information of the existing forward and reverse carriers.
For a further understanding of the method of the present invention, reference will now be made in detail to the method of the present invention with reference to the accompanying drawings.
In a multi-carrier system, when a reverse carrier already exists and a new reverse carrier is needed, if a ready-made reverse carrier exists in the same frequency band range of the new reverse carrier, as shown in fig. 1, a certain predetermined criterion may be adopted to determine the initial transmit power of the pilot of the new reverse carrier traffic channel according to the transmit power of the pilot of the existing reverse carrier traffic channel and the receive power of the forward carrier.
The specific method for determining the initial transmitting power of the newly-built reverse carrier traffic channel pilot frequency according to the transmitting power of the existing reverse carrier traffic channel pilot frequency in the invention comprises the following four methods, which will be respectively explained below.
The specific implementation of the first method comprises the following steps:
and adopting a reverse carrier wave which is closest to the newly-built reverse carrier frequency interval as a reverse reference carrier wave, or adopting other specific existing reverse carrier waves as the reverse reference carrier waves. The transmission power of the reverse reference carrier traffic channel pilot is used as the reference of the initial transmission power of the reverse new carrier traffic channel pilot, for example, in fig. 1, the reference of the initial transmission power InitialPilotPower _ RL3 of the newly added reverse carrier RL3 is equal to the transmission power of the traffic channel pilot of the existing reverse carrier RL2, pilotpowerpilotpowr _ RL 2.
The specific implementation of the second method comprises the following steps:
the minimum value of the traffic channel pilot powers of all the existing reference reverse carriers is used as the reference of the initial transmission power of the traffic channel pilot of the reverse new carrier, and the reference reverse carrier can be selected from the reference reverse carriers which are in the same frequency band as the new reverse carrier, for example, in fig. 1, the reference of the initial transmission power InitialPilotPower — RL3 of the newly added reverse carrier RL3 is equal to min { PilotPower — RL1, PilotPower — RL2}, which is the smaller value of the transmission powers of the traffic channel pilots of the existing reverse carriers RL1 and RL 2.
The third method is realized in a concrete way and comprises the following steps:
the maximum value of the traffic channel pilot power of all the existing reference reverse carriers is used as the reference of the initial transmission power of the traffic channel pilot of the reverse new carrier, and the reference reverse carrier can select the reference reverse carrier in the same frequency band as the new reverse carrier, for example, in fig. 1, the reference of the initial transmission power initialpilotpilower — RL3 of the new reverse carrier RL3 is equal to max { PilotPower _ RL1, PilotPower _ RL2}, which is the larger value of the transmission power of the traffic channel pilot of the existing reverse carriers RL1 and RL 2.
The concrete implementation of the fourth method comprises the following steps:
the weighted average value of the traffic channel pilot powers of all the existing reference reverse carriers is used as the reference of the initial transmit power of the traffic channel pilot of the reverse newly-created carrier, and the reference reverse carrier may select a reference reverse carrier in the same frequency band as the newly-created reverse carrier, for example, in fig. 1, the reference of the initial transmit power InitialPilotPower — RL3 of the newly-added reverse carrier RL3 is equal to { K1 × pilotpowerjrl 1+ K2 × pilotpowerpder — RL2}, where K1 and K2 are weight parameters corresponding to the transmit power values of the traffic channel pilot of the corresponding existing reverse carriers RL1 and RL2, and specific values may be issued by the system or may be specified in advance.
The method of the invention also comprises the following steps in the concrete implementation process: and determining the initial transmitting power of the reverse channel of the newly-built reverse carrier by considering the existing access parameter information or other parameter information of the reference forward reverse carrier pair. The method specifically comprises the following steps: if there is no existing reverse carrier in the same frequency band range of the newly-built reverse carrier, the determination of the initial transmission power value of the newly-built reverse carrier needs to be performed in a manner that the initial transmission power value of the reverse channel of the newly-built reverse carrier is determined according to the corresponding access parameter information, taking into account the access parameter information of the existing forward reverse carrier pair existing in other frequency bands. The method comprises the following concrete implementation processes:
as shown in fig. 2, assuming that the Reference front reverse carrier pair is F1/R1, the access parameters of the Reference front carrier are OpenLoopAdjust _ FL1 (open loop Power adjustment) and probeinitialaadjust _ FL1 (initial access probe adjustment), the Pilot Power estimated value received by the terminal for the Reference front carrier is Pilot _ Power _ FL1, and if the Reference reverse carrier traffic channel Pilot transmission Power estimated value is Pilot Power _ RL1, the Power Reference value Reference _1 ═ Pilot Power _ RL1+ Pilot _ Power _ FL1-OpenLoopAdjust _ FL 1-probeinitialaadjust _ FL1 corresponding to the Reference front reverse carrier pair F1/R1 is calculated; alternatively, the adjustment parameter adjust parameter may be issued through signaling, that is, Reference _1 is PilotPower _ RL1+ Pilot _ Power _ FL1-adjust parameter; the adjust parameter is mainly determined by the system according to the pilot frequency transmitting power of the reference forward carrier (set as a), the pilot frequency transmitting power of the forward carrier corresponding to the newly-established reverse carrier (set as B), the average receiving power of the reference reverse carrier (set as C), and the average receiving power of the newly-established reverse carrier (set as D), for example, the adjust parameter is a-B + C-D, and on the basis of the value obtained by calculation, the system can also make some other adjustments, for example, dynamically make some adjustments according to the QoS (quality of service) requirements of the service, and so on;
then, calculating the final required new service channel pilot frequency initial transmitting power InitialPilotPower-RL from the power reference values corresponding to all the existing front reverse carrier pairs;
the calculation method specifically comprises the following two steps:
the first specific calculation method is as follows:
selecting the existing forward and backward carrier pair closest to the newly-built backward carrier frequency interval as a reference forward and backward carrier pair, and calculating the initial transmitting power of the traffic channel pilot of the new backward carrier by using the corresponding reference value, as shown in fig. 2, the initial transmitting power of the backward channel initial pilot power — RL4 of the newly-built backward carrier is:
InitialPilotPower _ RL 4-Reference _3- (Pilot _ Power _ FL4-OpenLoopAdjust _ FL4-ProbeInitialAdjust _ FL 4). Or, InitialPilotPower — RL4 ═ Reference _3-Pilot _ Power _ FL 4;
the second specific calculation method is as follows:
selecting the weighted average of the pilot powers of all the reference traffic channels as the initial transmit power of the traffic channel pilot of the new reverse carrier, as shown in fig. 2, the initial transmit power of the reverse channel initial pilot power — RL4 of the new reverse carrier is:
InitialPilotPower _ RL4 ═ K1 Reference _1+ K2 Reference _2+ K3 Reference _3- (Pilot _ Power _ FL4-OpenLoopAdjust _ FL 4-probeinitialpadjust _ FL4), or InitialPilotPower _ RL4 ═ K1 Reference _1+ K2 Reference _2+ K3 Reference _3-Pilot _ Power _ FL 4. Wherein, K1, K2, and K3 are weight parameters, and can be agreed in advance or issued by the system.
In fig. 2, if only the average of the reference values of the nearest frequency band is selected, K1-0, K2-K3-1/2 may be taken as follows:
InitialPilotPower_RL4＝(Reference_2+Reference_3)/2-(Pilot_Poweir_FL4-OpenLoopAdjust_FL4-ProbeInitialAdjust_FL4)。
in the invention, when the existing reverse carrier wave does not exist in the same frequency range as the newly-built reverse carrier wave, but the forward carrier wave exists, the initial transmitting power of the reverse channel of the newly-built reverse carrier wave can be obtained by the following method.
Firstly, determining the access parameters OpenLoopAdjust _ FL4 and ProbeInitialAdjust _ FL4 of the current newly-built forward carrier, wherein the Pilot Power of the forward carrier received by the terminal is Pilot _ Power _ FL 4;
then, calculating the initial transmission power InitialPilotPower — RL4 of the reverse newly-built carrier traffic channel pilot frequency as:
InitialPilotPower_RL4＝-Pilot_Power_FL4+OpenLoopAdjust_FL4+ProbeInitialAdjust_FL4+TrafficToAccessRatio；
wherein, traffictoaccessfatior is a parameter, which may be designated in advance or issued by the network.
In summary, in the method of the present invention, when the initial transmission power of the traffic channel pilot of the newly-created reverse carrier, that is, the initial transmission power of the reverse channel of the carrier is determined, as shown in fig. 3, the method specifically includes the following steps:
step 31: judging whether a reverse carrier within the same frequency range as the newly-built reverse carrier exists or not, if so, executing the step 32, otherwise, executing the step 33;
step 32: determining the initial channel transmitting power of the reverse carrier according to the transmitting power of the traffic channel pilot frequency of the reverse carrier in the same frequency band range;
step 33: and calculating and determining the initial transmitting power of the service channel pilot frequency of the newly-built reverse carrier according to the power reference values of the forward carrier and the reverse carrier in other frequency bands. In summary, the present invention can calculate the pilot power of the traffic channel of the newly-built reverse carrier according to the transmitting power of the current existing reverse carrier and the receiving power of the existing forward carrier, so as to converge the power as fast as possible, reduce the system interference, and improve the stabilizing speed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (14)
1. A method for determining initial transmit power of a carrier reverse channel, comprising:
in the multi-carrier system with the existing reference reverse carrier, when a new reverse carrier is needed, the initial transmission power of the reverse channel of the new reverse carrier is determined according to the estimated value of the transmission power of the traffic channel pilot frequency of the existing reference reverse carrier.
2. The method of claim 1, wherein the existing reference reverse carrier comprises: the system signals the terminal to assign some or all of the existing reverse carriers.
3. The method of claim 1, wherein the method comprises:
the system appoints the reference reverse carrier of the terminal, and takes the transmitting power of the reference reverse carrier service channel pilot frequency as the benchmark of the initial transmitting power of the reverse channel of the newly-built reverse carrier.
4. The method of claim 3, wherein the method further comprises:
and adopting a reverse carrier wave which is closest to the newly-built reverse carrier frequency interval as a reference reverse carrier wave.
5. The method of claim 1, wherein the method comprises:
adopting the minimum value in the transmitting power of the traffic channel pilot frequency of all the reference reverse carriers as the initial transmitting power of the reverse channel of the newly-built reverse carrier;
or,
adopting the maximum value in the transmitting power of the traffic channel pilot frequency of all the reference reverse carriers as the initial transmitting power of the reverse channel of the newly-built reverse carrier;
or,
and adopting the weighted average value of the transmitting power of the traffic channel pilot frequency of all the reference reverse carriers as the initial transmitting power of the reverse channel of the newly-built reverse carrier.
6. The method of claim 5, wherein when the weighted average is determined, the corresponding weighting weight is issued by the system or pre-assigned.
7. A method for determining initial transmit power of a carrier reverse channel, comprising:
in a multi-carrier system with a reference forward carrier and a reference reverse carrier, when a new reverse carrier is needed, determining the initial transmitting power of a reverse channel of the new reverse carrier according to the estimated values of the received powers of the existing reference forward carrier and the reference reverse carrier.
8. The method of claim 7, wherein the method comprises:
determining the access parameters of the existing reference forward carrier FL 1: open loop Power adjustment OpenLoopAdjust _ FL1 and access probe initial adjustment probeinitialialidjust _ FL1, Pilot Power estimate Pilot _ Power _ FL1 of the reference forward carrier, and Pilot transmit Power estimate Pilot _ RL1 of traffic channel of reference reverse carrier RL1 corresponding thereto, and calculates Power reference values corresponding to the reference forward and reverse carrier pairs FL1/RL 1: reference _1 ═ PilotPower _ RL1+ Pilot _ Power _ FL1-OpenLoopAdjust _ FL 1-probeinitiaiadujust _ FL 1; or the system issues an adjustment parameter adjust parameter through signaling, wherein Reference _1 is PilotPower _ RL1+ Pilot _ Power _ FL1-adjust parameter, and the adjust parameter is determined according to the Pilot transmission Power of the Reference forward carrier, the Pilot transmission Power of the forward carrier corresponding to the newly-built reverse carrier, the average receiving Power of the Reference reverse carrier and the average receiving Power of the newly-built reverse carrier;
and calculating the initial transmitting power InitialPilotPower-RL of the traffic channel pilot frequency of the newly-built reverse carrier wave according to the power reference value corresponding to the front reverse carrier wave pair.
9. The method of claim 8, wherein the method comprises:
selecting a Reference value Reference _3 corresponding to the existing front reverse carrier pair closest to the newly-built reverse carrier frequency interval, and calculating initial transmission power InitialPilotPower _ RL4 of the reverse newly-built carrier service channel pilot frequency as follows:
InitialPilotPower _ RL4 Reference _3- (Pilot _ Power _ FL4-OpenLoopAdjust _ FL 4-probeinitialpadjust _ FL 4); or, InitialPilotPower — RL4 ═ Reference _3-Pilot _ Power _ FL 4;
or,
selecting the weighted average of all reference traffic channel pilot powers as the initial transmission power InitialPilotPower _ RL4 of the reverse newly-built carrier traffic channel pilot, which is:
InitialPilotPower _ RL4 ═ K1 Reference _1+ K2 Reference _2+ K3 Reference _3- (Pilot _ Power _ FL4-OpenLoopAdjust _ FL 4-probeiniliaiailadjust _ FL 4); or, InitialPilotPower — RL4 ═ K1 Reference _1+ K2 Reference _2+ K3 Reference _3-Pilot _ Power _ FL 4;
wherein, K1, K2 and K3 are weight parameters, which are predetermined or issued by the system.
10. A method for determining initial transmit power of a carrier reverse channel, the method comprising:
when the reference reverse carrier exists, determining the initial transmitting power of the reverse channel of the newly-built reverse carrier according to the transmitting power of the service channel of the reference reverse carrier;
when no reference reverse carrier exists, determining the initial transmitting power of a reverse channel of a newly-built reverse carrier according to the receiving power of an existing reference forward carrier, wherein the existing reference forward carrier comprises: the system assigns some or all existing forward carriers to the terminal through signaling, or refers to the forward carrier corresponding to the reverse carrier and the forward carrier corresponding to the newly-built reverse carrier.
11. The method of claim 10, wherein the step of determining the initial transmission power of the reverse channel of the newly-built reverse carrier according to the received power of the reference forward carrier comprises:
determining the access parameters OpenLoopAdjust _ FL4 and ProbeInitialAdjust _ FL4 of the forward carrier and the Pilot Power Pilot _ Power _ FL4 of the forward carrier;
calculating initial transmitting power InitialPilotPower _ RL4 of the newly-built reverse carrier traffic channel pilot frequency as follows: InitialPilotPower _ RL4 ═ Pilot _ Power _ FL4+ OpenLoopAdjust _ FL4+ ProbeInitialAdjust _ FL4+ TrfficToAccessRatio, TrfficToAccessRatio is the ratio of traffic to access Power, which is either pre-specified or issued by the network.
12. A method for determining initial transmit power of a carrier reverse channel, comprising:
for a multi-carrier system with an existing reference forward carrier, when a new reverse carrier is needed, determining the initial transmitting power of a reverse channel of the new reverse carrier according to the estimated value of the receiving power of the existing reference forward carrier.
13. The method of claim 12, wherein the existing reference forward carrier comprises: the system assigns some or all existing forward carriers to the terminal through signaling, or refers to the forward carrier corresponding to the reverse carrier and the forward carrier corresponding to the newly-built reverse carrier.
14. The method for determining initial transmit power of a carrier reverse channel as claimed in claim 12 or 13, wherein said method comprises:
determining the access parameters OpenLoopAdjust _ FL4 and ProbeInitialAdjust _ FL4 of the forward carrier and the Pilot Power Pilot _ Power _ FL4 of the forward carrier;
calculating initial transmitting power InitialPilotPower _ RL4 of the newly-built reverse carrier traffic channel pilot frequency as follows: InitialPilotPower _ RL4 ═ Pilot _ Power _ FL4+ OpenLoopAdjust _ FL4+ ProbeInitialAdjust _ FL4+ TrfficToAccessRatio, TrfficToAccessRatio is the ratio of traffic to access Power, which is either pre-specified or issued by the network.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510126118XA CN100377509C (en) | 2005-08-16 | 2005-11-30 | Method for confirming carrier reverse channel initial transmitting power |
| CN2006800121917A CN101160739B (en) | 2005-08-16 | 2006-07-28 | Method and device of determining inceptive emitting power of carrier backward channel |
| JP2008526356A JP4642902B2 (en) | 2005-08-16 | 2006-07-28 | Method and apparatus for determining the initial transmit power of a carrier backward channel |
| PCT/CN2006/001889 WO2007019780A1 (en) | 2005-08-16 | 2006-07-28 | A method and an apparatus for determinding initial transmit power on the carrier reverse channel |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510090768 | 2005-08-16 | ||
| CN200510090768.3 | 2005-08-16 | ||
| CNB200510126118XA CN100377509C (en) | 2005-08-16 | 2005-11-30 | Method for confirming carrier reverse channel initial transmitting power |
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| Publication Number | Publication Date |
|---|---|
| CN1801663A CN1801663A (en) | 2006-07-12 |
| CN100377509C true CN100377509C (en) | 2008-03-26 |
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| CNB200510126118XA Active CN100377509C (en) | 2005-08-16 | 2005-11-30 | Method for confirming carrier reverse channel initial transmitting power |
| CN2006800121917A Expired - Fee Related CN101160739B (en) | 2005-08-16 | 2006-07-28 | Method and device of determining inceptive emitting power of carrier backward channel |
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| CN2006800121917A Expired - Fee Related CN101160739B (en) | 2005-08-16 | 2006-07-28 | Method and device of determining inceptive emitting power of carrier backward channel |
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| Country | Link |
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| JP (1) | JP4642902B2 (en) |
| CN (2) | CN100377509C (en) |
| WO (1) | WO2007019780A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8660095B2 (en) | 2005-07-21 | 2014-02-25 | Qualcomm Incorporated | Reverse link transmit power control in a wireless communication system |
| WO2009072355A1 (en) | 2007-12-03 | 2009-06-11 | Nec Corporation | Wireless communication system, communication control method, wireless station, and recording medium |
| CN101860949B (en) * | 2009-04-10 | 2013-07-10 | 电信科学技术研究院 | Method, system and device for determining transmit power under multi-carrier system |
| CN102088760A (en) * | 2009-12-08 | 2011-06-08 | 中兴通讯股份有限公司 | Power control method and device of uplink in carrier aggregation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185706A (en) * | 1996-12-05 | 1998-06-24 | 日本电气株式会社 | Emission power control device for moveable communication system |
| CN1192304A (en) * | 1995-06-30 | 1998-09-02 | 交互数字技术公司 | Automatic power control system for a code division multiple access (CDMA) communication system |
| CN1254222A (en) * | 1998-11-12 | 2000-05-24 | 日本电气株式会社 | Transmitting power control method of code-division multiple address communication system and its system |
| US6154659A (en) * | 1997-12-24 | 2000-11-28 | Nortel Networks Limited | Fast forward link power control in a code division multiple access system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6587697B2 (en) * | 2001-05-14 | 2003-07-01 | Interdigital Technology Corporation | Common control channel uplink power control for adaptive modulation and coding techniques |
| CA2434070C (en) * | 2001-11-08 | 2008-02-05 | Ntt Docomo, Inc. | Preamble transmission method, mobile station, mobile communications system, preamble transmission program and computer data signal |
| US7092731B2 (en) * | 2003-03-06 | 2006-08-15 | Lucent Technologies Inc. | Method for improving capacity of a reverse link channel in a wireless network |
| JP4127805B2 (en) * | 2003-04-11 | 2008-07-30 | 株式会社エヌ・ティ・ティ・ドコモ | Base station, mobile station, communication system, transmission control method, and mobile station control program |
| US20050164646A1 (en) * | 2004-01-28 | 2005-07-28 | Telefonaktiebolaget Lm Ericsson | Outer loop power control using multiple channels |
-
2005
- 2005-11-30 CN CNB200510126118XA patent/CN100377509C/en active Active
-
2006
- 2006-07-28 JP JP2008526356A patent/JP4642902B2/en active Active
- 2006-07-28 WO PCT/CN2006/001889 patent/WO2007019780A1/en active Application Filing
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192304A (en) * | 1995-06-30 | 1998-09-02 | 交互数字技术公司 | Automatic power control system for a code division multiple access (CDMA) communication system |
| CN1185706A (en) * | 1996-12-05 | 1998-06-24 | 日本电气株式会社 | Emission power control device for moveable communication system |
| US6154659A (en) * | 1997-12-24 | 2000-11-28 | Nortel Networks Limited | Fast forward link power control in a code division multiple access system |
| CN1254222A (en) * | 1998-11-12 | 2000-05-24 | 日本电气株式会社 | Transmitting power control method of code-division multiple address communication system and its system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009505533A (en) | 2009-02-05 |
| CN101160739B (en) | 2012-10-17 |
| JP4642902B2 (en) | 2011-03-02 |
| CN101160739A (en) | 2008-04-09 |
| WO2007019780A1 (en) | 2007-02-22 |
| CN1801663A (en) | 2006-07-12 |
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