CN101197601B - Enhancement type absolute authorization channel emission power confirming method and device - Google Patents

Abstract

The embodiment of the invention provides a determination method for improving an enhanced E-AGCH emitting power and device thereof, which mainly comprises that: a power bias is acquired, the E-AGCH emitting power can be determined according to a common pilot channel CPICH emitting power and a channel quality indication CQI as well as the power bias, thereby the E-AGCH emitting power can be reasonably configured so as to adapt the change of a wireless channel.

Description

Enhancement mode absolute grant channel transmitting power is determined method and apparatus

Technical field

The present invention relates to moving communicating field, relate in particular to a kind of definite technology of enhancement mode absolute grant channel transmitting power.

Background technology

HSUPA (High Speed Downlink Packet Access, High Speed Uplink Packet inserts) is the wireless side up link enhancement techniques that the 3GPP protocol architecture is introduced in the R6 version.It adopts fast and retransmits, hybrid ARQ (Automatic Repeat Request, repeat requests automatically) reaches based on the distributed control method of base station and finishes transmitting uplink data function at a high speed.Five new physical channel E-DPDCH (enhanced dedicated physical channel) have been introduced at HSUPA, E-DPCCH (enhancement mode Dedicated Physical Control Channel), E-AGCH (enhancement mode absolute grant channel), E-RGCH (enhancement mode relative authorization channel), E-HICH and two new MAC entity MAC-e and MAC-es, and the packet scheduling function moved down into NodeB from RNC, realized fast packet scheduling based on NodeB, and by mixing re-transmission HARQ automatically, 2ms is wireless short frame and many yards key technologies such as transmission, make the data throughput of up link can reach 5.76Mbit/s, improved the bearing capacity of uplink data business greatly.

In system, be each cell configuration one or more E-AGCH, for the user's time division multiplexing in the sub-district.E-AGCH belongs to shared channel, and by the sub-district indication user maximum available power that the user serves E-DCH (enhancement type special channel) wireless connections place, the E-AGCH power consumption is relevant with factors such as the number of users that supports simultaneously, scheduling strategies.E-AGCH carries is absolute grant information at the user, and for certain user, it authorizes AG information only to send at Serving cell.And the base station must rationally be provided with the transmitting power of E-AGCH to guarantee the correctness of user to the E-AGCH demodulation.

Two kinds of technical schemes of main at present existence are configured the transmitting power of E-AGCH.

Prior art one: by the base station is the fixing transmitting power of E-AGCH configuration.To be the base station be configured to the down public guide frequency channel power with the E-AGCH transmitting power adds fixing biasing.And the power of base station configuration must guarantee that the user of cell edge has enough good signal quality, therefore this to the fixing transmission power scheme of E-AGCH configuration, can cause total channel power consumption meeting much larger than actual needs, cause bigger unnecessary power consumption.

Prior art two: on the basis of E-DPDCH power, add constant power biasing, the transmitting power of E-AGCH is configured.The transmitting power of E-DPDCH is to adopt fast closed-loop power control, puts in order according to the power control commands tone of Chinese characters of user's emission.But when the user had wireless connections (soft handover) with a plurality of base stations simultaneously, these base stations can send identical data to the user simultaneously on downward special physical channel.And the user adopts high specific merging method to receive to the received signal.The down transmitting power of each base station only has the situation of wireless connections less than the user with a base station, and the power that needs is relevant with the wireless connections number of foundation simultaneously.Then only by the Serving cell emission, the user can not receive with high specific merging method E-AGCH.So the difference power of E-AGCH and DPCH, promptly power bias should change with the quality of wireless connections number, each wireless connections, and the base station is difficult to adjust voluntarily.Like this or can't guarantee the demodulation correctness of all users to E-AGCH, perhaps for guaranteeing user's demodulation correctness, bigger E-GACH power is launched in conservative mode in the base station, causes unnecessary power consumption.

To sum up, in realizing process of the present invention, the inventor finds to exist at least in the prior art E-AGCH transmitting power of configuration often bigger, causes unnecessary power consumption.

Summary of the invention

The technical problem underlying that the embodiment of the invention solves provides the transmitting power of E-AGCH and determines method and apparatus, thereby the transmitting power of E-AGCH is carried out reasonable disposition, to adapt to the variation of wireless channel better.

The embodiment of the invention provides a kind of enhancement mode absolute grant channel E-AGCH transmitting power to determine method, comprising:

Obtain power bias;

According to Common Pilot Channel CPICH transmitting power and channel quality indicator (CQI) and described power bias, determine the transmitting power of described E-AGCH.

The embodiment of the invention also provides another kind of E-AGCH transmitting power to determine method, comprising:

Obtain power bias;

Determine the transmitting power of described E-AGCH according to the actual emission power of described power bias and high-speed shared control channel HS-SCCH.

The embodiment of the invention provides a kind of E-AGCH transmitting power to determine device, comprising:

First acquiring unit is used to obtain power bias;

Determining unit is used for the power bias that obtains according to Common Pilot Channel CPICH transmitting power and channel quality indicator (CQI) and described first acquiring unit, determines the transmitting power of described E-AGCH.

The embodiment of the invention also provides another kind of E-AGCH transmitting power to determine device, comprising:

First acquiring unit is used to obtain power bias;

Determining unit, the actual emission power that is used for the power bias that obtains according to described first acquiring unit and HS-SCCH is determined the transmitting power of described E-AGCH.

In sum, the E-AGCH transmitting power that the embodiment of the invention provides is determined method and apparatus, because can be according to according to Common Pilot Channel CPICH transmitting power and channel quality indicator (CQI) and described power bias, determine the transmitting power of E-AGCH, thereby effectively controlled the transmitting power of E-AGCH, satisfying under user's demodulation requirement prerequisite, making transmitting power require to minimize.Further, owing to can also determine the transmitting power of E-AGCH according to the actual emission power of described power bias and high-speed shared control channel HS-SCCH, and the transmitting power of HS-SCCH can dynamically be adjusted according to the ACK/NACK information of the HSDPA of UE feedback, therefore can adapt to the variation of wireless channel better, thereby can the transmitting power of E-AGCH reasonably be disposed.

Description of drawings

Fig. 1 is the flow chart of one embodiment of the invention E-AGCH determining method of launch power;

Fig. 2 is definite structure drawing of device of one embodiment of the invention E-AGCH transmitting power;

Fig. 3 determines the structure chart of first acquiring unit in the device for one embodiment of the invention E-AGCH transmitting power;

Fig. 4 is the flow chart of another embodiment of the present invention E-AGCH determining method of launch power.

Embodiment

For making the purpose, technical solutions and advantages of the present invention express clearlyer, the present invention is further described in more detail below in conjunction with drawings and the specific embodiments.

The embodiment of the invention provides a kind of E-AGCH determining method of launch power.

The embodiment of the invention is determined the transmitting power of E-AGCH according to Common Pilot Channel CPICH transmitting power, channel quality indication and power bias.

Generally, when up use HSUPA, following guild uses the HSDPA high-speed downlink packet to insert, and HSUPA is identical with the Serving cell of HSDPA.In this case, subscriber equipment (User Equipment, UE) can be periodically to Node B transmitting channel quality indication (ChannelQuality Indicator, CQI), it has indicated the descending channel quality of Serving cell, therefore can calculate the transmitting power of AGCH according to CQI, and not need to consider the influence of soft handover.

The method that the embodiment of the invention is determined the E-AGCH transmitting power as shown in Figure 1.This method can comprise:

S101: obtain power bias.

Herein, this power bias can calculate in advance as parameter configuration and give the base station, that is to say and can directly obtain required power bias from the parameter of base station configuration.In addition, this power bias also can calculate in real time, promptly directly calculates to obtain in the process of determining the E-AGCH transmitting power.And this power bias is relevant with factors such as needed signal to noise ratio of E-AGCH demodulation and network configuration parameters usually.For example, can obtain this power bias PO by formula (1):

$\mathrm{PO}={\left(\frac{E_c}{N_o}\right)}_{\mathrm{AGCH}}+\mathrm{MPO}+10\mathrm{lo}{g}_{10}16-\mathrm{CO}---\left(1\right)$

Wherein

Be the needed signal to noise ratio Ec/N0 of E-AGCH demodulation, its value can be definite according to the demodulation quality that E-AGCH requires, and the 16th, the spreading factor of HS-PDSCH, MPO are network configuration parameters, are parameters in the present agreement.CO is configurable offset parameter, and its occurrence can be set according to actual needs, can on the occasion of, also can be a negative value.

S102: the transmitting power of determining E-AGCH.

In this step, according to the power bias that obtains among the S101, in conjunction with CPICH transmitting power P _CPICHAnd channel quality indicator (CQI), determine the transmitting power of E-AGCH, wherein, the transmitting power of CPICH is by network configuration, and CQI is that the user reports by measurement report.

Can calculate the transmitting power of E-AGCH according to following formula (2), thereby finish determining the transmitting power of E-AGCH.

P _AGCH＝P _CPICH-CQI+PO (2)

In the technical scheme that present embodiment provides, by indicating and power bias according to Common Pilot Channel CPICH transmitting power, channel quality, determine the transmitting power of E-AGCH, effectively controlled the transmitting power of E-AGCH, satisfying under user's demodulation requirement prerequisite, making transmitting power require to minimize.

Above-mentioned E-AGCH determining method of launch power can pass through to realize that with lower device as shown in Figure 2, this device can comprise:

First acquiring unit 201, determining unit 202;

Wherein, first acquiring unit 201 is used to obtain power bias PO, and herein, this power bias can calculate in advance as parameter configuration and give the base station, that is to say that first acquiring unit 201 can directly obtain required power bias from the parameter of base station configuration.In addition, this power bias also can calculate in real time, promptly directly calculates to obtain in the process of determining the E-AGCH transmitting power.

Further, as shown in Figure 3, first acquiring unit 201 can comprise:

Signal to noise ratio is determined subelement 2011, is used for determining the needed signal to noise ratio Ec/N0 of E-AGCH demodulation;

Configuration parameter obtains subelement 2012, is used to obtain network configuration parameters MPO;

Offset parameter is set subelement 2013, is used for setting according to actual needs configurable offset parameter CO;

Computation subunit 2014 is used for determining subelement 2011 according to signal to noise ratio that configuration parameter obtains subelement 2012, and the calculation of parameter that offset parameter setting subelement 2013 obtains obtains power bias.Its computational methods can be with reference to the associated description among the S101.

And determining unit 202 is used for according to PCPICH, CQI, and the power bias that obtains in conjunction with first acquiring unit 201 is determined the transmitting power of E-AGCH, and its computational methods can be with reference to the associated description among the S102.Wherein, P _CPICHCan be disposed by network side, CQI obtains by the measurement report of reporting of user.

The embodiment of the invention provides another kind of E-AGCH determining method of launch power.

Present embodiment is determined the transmitting power of E-AGCH according to the transmitting power and the power bias of high-speed shared control channel HS-SCCH.

HS-SCCH is the down control channel of HSDPA, and it is normally identical that HS-SCCH requires with the demodulation error probability of E-AGCH, is generally less than 1%.They have used identical coded system, the similar coding length of determining, and therefore similar punching ratio can think that their needed signal to noise ratios of decoding are identical.The two required difference power like this, promptly the Ec/No difference is fixed, desired power biasing when this fixing Ec/No difference is just determined the transmitting power of E-AGCH in the present embodiment.

The method that the embodiment of the invention is determined the E-AGCH transmitting power as shown in Figure 4.This method can comprise:

S401: obtain power bias.

As mentioned above, the required power of required transmitting power of power bias and E-AGCH and HS-SCCH is relevant herein, this power bias can calculate in advance as parameter configuration and give the base station, that is to say and can directly obtain required power bias from the parameter of base station configuration.In addition, this power bias also can calculate in real time, promptly directly calculates to obtain in the process of determining the E-AGCH transmitting power.For example, can calculate this power bias by following method:

P′ _AGCH-P′ _HS-SCCH＝10log ₁₀128+10log ₁₀(80/29)-10log ₁₀256-10log ₁₀(20/22)-10log ₁₀SlotNum

Wherein, P ' _AGCHBe the required transmitting power of E-AGCH, P ' _HS-SCCHBe the required transmitting power of HS-SCCH, and 128 and 256 be respectively the spreading factor of HS-SCCH and E-AGCH, 29, the 80th, a last TTI (the Transmission Time Interval of HS-SCCH, Transmission Time Interval) information bit and physical layer carrying bit number, the 20th, the physical layer carrying bit number of the last time slot of E-AGCH, SlotNum is the timeslot number of a TTI of E-AGCH, 22 is bit numbers of a TTI carrying.

S402: the transmitting power of determining E-AGCH.

Actual emission power P according to resulting power bias of S401 and HS-SCCH _HS-SCCHCalculate the transmitting power P of E-AGCH _AGCH, for example, with P _HS-SCCHWith the resulting power bias addition of S401, herein, P _HS-SCCHBy determining the base station, can dynamically adjust according to the ACK/NACK information of the HSDPA of UE feedback.

In the embodiment of the invention,, can adapt to the variation of wireless channel better, therefore can the transmitting power of E-AGCH reasonably be disposed because the transmitting power of HS-SCCH can dynamically be adjusted according to the ACK/NACK information of the HSDPA of UE feedback.

Above-mentioned E-AGCH determining method of launch power can pass through to realize that with lower device this device can comprise:

First acquiring unit, determining unit.

Wherein, this first acquiring unit is used to obtain power bias, and herein, this power bias can calculate in advance as parameter configuration and give the base station, that is to say that this first acquiring unit can directly obtain required power bias from the parameter of base station configuration.In addition, this power bias also can calculate in real time, promptly directly calculates to obtain in the process of determining the E-AGCH transmitting power.Its computational methods can be with reference to the associated description among the S401.

Further, this first acquiring unit can comprise:

Power obtains subelement, is used to obtain required transmitting power of E-AGCH and the required transmitting power of HS-SCCH;

Computation subunit is used to calculate the difference that this power obtains the required transmitting power of the required transmitting power of E-AGCH that subelement obtains and HS-SCCH, obtains described power bias.

And this determining unit is used for the actual emission power P according to HS-SCCH _HS-SCCHAnd the power bias that obtains of this first acquiring unit determines the transmitting power of E-AGCH, for example, and can be with P _HS-SCCHWith this power bias addition, thereby determine E-AGCH transmitting power, wherein P _HS-SCCHCan dynamically adjust according to the ACK/NACK information of the HSDPA of UE feedback.

In sum, in various embodiments of the present invention, provide E-AGCH determining method of launch power and device, effectively controlled the transmitting power of E-AGCH, satisfied under user's demodulation requirement prerequisite, made transmitting power require to minimize.Further,, can adapt to the variation of wireless channel better, therefore can the transmitting power of E-AGCH reasonably be disposed because the transmitting power of HS-SCCH can dynamically be adjusted according to the ACK/NACK information of the HSDPA of UE feedback.

Obviously, those skilled in the art can carry out various changes and modification to the embodiment of the invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (13)

1. an enhancement mode absolute grant channel E-AGCH transmitting power is determined method, it is characterized in that, comprising:

Obtain power bias;

According to Common Pilot Channel CPICH transmitting power and channel quality indicator (CQI) and described power bias, determine the transmitting power of described E-AGCH, wherein, P _AGCH=P _CPICH-CQI+PO, P _CPICHBe CPICH transmitting power, P _AGCHBe the E-AGCH transmitting power, PO is a power bias.

2. method according to claim 1 is characterized in that, the described power bias that obtains comprises:

From the base station configuration parameter, obtain described power bias.

3. method according to claim 1 and 2 is characterized in that, definite method of described power bias comprises:

According to the needed signal to noise ratio of described E-AGCH demodulation, network configuration parameters and configurable offset parameter are determined described power bias.

4. method according to claim 1 is characterized in that, the transmitting power of described definite described E-AGCH comprises:

Obtain described CPICH transmitting power and CQI, wherein, described CPICH transmitting power is disposed by network side, and described CQI obtains by the measurement report of reporting of user.

5. an E-AGCH transmitting power is determined device, it is characterized in that, described device comprises:

First acquiring unit is used to obtain power bias;

Determining unit is used for the power bias that obtains according to Common Pilot Channel CPICH transmitting power and channel quality indicator (CQI) and described first acquiring unit, determines the transmitting power of described E-AGCH, wherein, and P _AGCH=P _CPICH-CQI+PO, P _CPICHBe CPICH transmitting power, P _AGCHBe the E-AGCH transmitting power, PO is a power bias.

6. device as claimed in claim 5 is characterized in that, described first acquiring unit is used for obtaining described power bias from the parameter of base station configuration.

7. device according to claim 5 is characterized in that, described first acquiring unit comprises:

Signal to noise ratio is determined subelement, is used for determining the needed signal to noise ratio Ec/N0 of E-AGCH demodulation;

Configuration parameter obtains subelement, is used to obtain network configuration parameters MPO;

Offset parameter is set subelement, is used for setting according to actual needs configurable offset parameter CO;

Computation subunit, described Ec/N0, the MPO and the CO that are used for obtaining according to above-mentioned subelement calculate described power bias.

8. an E-AGCH transmitting power is determined method, it is characterized in that, comprising:

Obtain power bias;

Determine the transmitting power of described E-AGCH according to the actual emission power of described power bias and high-speed shared control channel HS-SCCH; Wherein, the transmitting power of described definite described E-AGCH comprises: with actual emission power and the described power bias addition of described HS-SCCH, obtain the transmitting power of described E-AGCH.

9. method according to claim 8 is characterized in that, the described power bias that obtains comprises:

From the base station configuration parameter, obtain described power bias.

10. according to Claim 8 or 9 described methods, it is characterized in that definite method of described power bias comprises:

Determine described power bias according to transmitting power and the required transmitting power of HS-SCCH that E-AGCH is required.

11. an E-AGCH transmitting power is determined device, it is characterized in that, described device comprises:

First acquiring unit is used to obtain power bias;

Determining unit, the actual emission power that is used for the power bias that obtains according to described first acquiring unit and HS-SCCH is determined the transmitting power of described E-AGCH; Wherein, the transmitting power of described definite described E-AGCH comprises: with actual emission power and the described power bias addition of described HS-SCCH, obtain the transmitting power of described E-AGCH.

12. device according to claim 11 is characterized in that, described first acquiring unit is used for obtaining described power bias from the parameter of base station configuration.

13. device according to claim 11 is characterized in that, described first acquiring unit comprises:

Power obtains subelement, is used to obtain required transmitting power of E-AGCH and the required transmitting power of HS-SCCH;

Computation subunit is used to calculate the difference that described power obtains the required transmitting power of the required transmitting power of E-AGCH that subelement obtains and HS-SCCH, obtains described power bias.

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