CN103379606A - Method and base station used for controlling E-HICH transmitting power - Google Patents

Abstract

The invention provides a method and a base station used for controlling E-HICH transmitting power. The method comprises the following steps that the base station obtains UPH of all user equipment (UE) with an HSUPA service in a service cell, and the base station sets an initial emitting power of an E-HICH according to the maximum emitting power of the UPE and the UE and the maximum emitting power of the E-HICH. The method and the base station used for controlling the E-HICH transmitting power can realize accurate power control of the E-HICH, lower the needed emitting power on the premise of guaranteeing effective transmission of information, and further improve the performance of the network.

Description

A kind of method and base station of controlling the E-HICH transmitting power

Technical field

The present invention relates to the wireless telecommunication system field, method and the base station of a kind of E-HICH of control transmitting power that particularly exists in TD-SCDMA (Time Division Synchronous Code Division Multiple Access, the TD SDMA) wireless telecommunication system.

Background technology

The TD-SCDMA wireless telecommunication system is one of 3-G (Generation Three mobile communication system) standard of 3GPP (3rd Generation Partnership Project, third generation partner program) normalized definition.

E-DCH HARQ (Enhanced Dedicated Channel, strengthen dedicated channel, Hybrid Automatic Repeat Reques, the mixed automatic retransfer request) confirms indicating channel (E-DCH Hybrid ARQ Indicator Channel, be called for short E-HICH) be down physical channel, be used for carrying up E-DCH hybrid ARQ and confirm (HARQ-ACK) indication, for the upstream packet transmission provides confirmation.If NodeB (base station) correctly receives the grouped data of E-PUCH (enhancing uplink physical channel), then feedback correctly receives the affirmation information (ACK) of data, otherwise will feed back a negative affirmation information (NACK).Confirm the ACK order if UE (subscriber equipment) receives, illustrate that NodeB correctly receives data, UE will send new data so; If it negates the NACK order that UE receives, illustrate that NodeB does not have correct receive data, UE will resend and upload unsuccessful data so.If the number of times of UE data retransmission has reached the maximum retransmission of regulation but still data retransmission is unsuccessful, then UE will transmit new data.

Because the affirmation information that this channel (E-HICH) carries many UE simultaneously so up to the present do not have the relevant power control explanation of clear in the agreement, only stipulates that the transmitting power of E-HICH is determined by NodeB.

E-UCCH namely strengthens ascending control channel, mainly is to assist E-PUCH to carry out data transfer.The E-PUCH physical channel that is scheduled transmission or non-scheduled transmission all carries an E-UCCH at least, carried TBS (Transport B1ock Size on this channel, transport block size) 6bit, RSN (The retransmission sequence number, retransmission sequence number) 2bit, HARQ ID (The HARQ process ID, HARQ process identification (PID)) 2bit.Wherein, RSN represents the sequence number of data re-transmission, RSN=0 during initial transmission, RSN=1 when retransmitting for the first time, RSN=2 when retransmitting for the second time, number of retransmissions n＞=3 o'clock, 2+ (n mod 2) (result can become or 2 or the meaning of 3, n mod 2 be number of retransmissions divided by the remainder after 2).

At present, in realization, mostly adopt all users for diverse location in the residential quarter to adopt maximum transmission power, so will cause power dissipation for the user near the base station, introduced unnecessary interference.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of method and base station of the E-HICH of control transmitting power, to realize the accurate control of E-HICH power.

In order to solve the problems of the technologies described above, the invention provides a kind of method of the E-HICH of control transmitting power, comprising:

The base station obtains the user power surplus (UPH) of the subscriber equipment of all configuration high-speed uplink packet access (HSUPA) business in the Serving cell;

Described base station arranges the Initial Trans of E-HICH according to the maximum transmission power of the maximum transmission power of UPH, UE and E-HICH.

Further, said method also has following characteristics: described base station is according to the maximum transmission power P of UPH, UE _MaxMaximum transmission power EHICH with E-HICH _PowerMaxThe Initial Trans EHICH of E-HICH is set _PowerComprise:

Calculate bias power EHICH _PowerRatio, wherein,

EHICH _Power＝EHICH _PowerRatio×EHICH _PowerMax×α+β；

Wherein, P _{UPH_Max}Be the power after the UPH conversion of the minimum in all subscriber equipmenies in the Serving cell; α is compensation coefficient, α ∈ [0.1,2]; β is improvement factor.

Further, said method also has following characteristics: described base station arranges after the Initial Trans of E-HICH, in the process of the transmission of data, comprising:

Described base station obtains the hybrid automatic repeat request process sign (HARQ ID) of the subscriber equipment of all the configuration HSUPA business in the Serving cell, retransmission sequence number (RSN) information that subscriber equipment carries at ascending control channel and the transmission confirmation of described base station;

Whether described base station is correctly transmitted according to the data that subscriber equipment sends, and described HARQ ID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power.

Further, said method also has following characteristics: whether described base station is correctly transmitted according to the data that subscriber equipment sends, and described HARQ ID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power, comprising:

Whether the data that described base station sends according to subscriber equipment by correct transmission, described HARQ ID, described RSN information and described transmission confirmation, the transmitted error rate of calculating subscriber equipment in the corresponding HARQ instance process;

Described transmitted error rate and the error threshold value that presets are compared, obtain corresponding power compensating value;

Adjust the E-HICH transmitting power by described power compensating value.

Further, said method also has following characteristics: whether the data that described base station sends according to subscriber equipment comprise by the affirmation information of correct transmission, described HARQ ID, described RSN information and described transmission, the transmitted error rate ErrorRate of calculating subscriber equipment in the corresponding HARQ instance process:

ErrorRate is calculated by following formula in described base station:

$\mathrm{ErrorRate}=\frac{\mathrm{ErrorCounter}}{\mathrm{ErrorCounter}+\mathrm{CorrectCounter}}\×100$

Wherein, ErrorCounter is the error of transmission counter, acts in HARQ process corresponding to all subscriber equipmenies, and ErrorCounter is initialized as 0, and counting rule is as follows:

When number of retransmissions less than 3, described base station sends the transmission confirmation (NACK) of negating, but the new RSN that receives is during less than or equal to old RSN, ErrorCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, but the new RSN that receives is not equal to 2 when adding number of retransmissions divided by 2 remainder, ErrorCounter is from adding once;

Wherein, CorrectCounter acts in the same HARQ process of same subscriber equipment for the correct counter of transmission, and CorrectCounter is initialized as 0, and counting rule is as follows:

When the transmission confirmation (ACK) that the transmission of described base station is determined, the new RSN that receives equals old RSN and equals at 0 o'clock, and CorrectCounter is from adding once;

When number of retransmissions less than 3, described base station sends NACK, and new RSN is during greater than old RSN, CorrectCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, and the new RSN that receives equals 2 when adding number of retransmissions divided by 2 remainder, CorrectCounter is from adding once.

Further, said method also has following characteristics: described described transmitted error rate and the error threshold value that presets are compared, obtain corresponding power compensating value, adjust the E-HICH transmitting power by described power compensating value, comprising:

Be one or more power per liter step values that presets if described transmitted error rate, then obtains described power compensating value greater than the first error threshold value, then current E-HICH transmitting power added this one or more power per liter step value of presetting;

If described transmitted error rate less than the second error threshold value, then obtains described power compensating value be 1 preset the power step size value falls, then current E-HICH transmitting power is deducted this 1 preset the power step size value falls;

Described the first error threshold value is greater than described the second error threshold value.

In order to address the above problem, the present invention also provides a kind of method of the E-HICH of control transmitting power, comprising:

The base station obtains the hybrid automatic repeat request process sign (HARQ ID) of the professional subscriber equipment of all configuration high-speed uplink packet accesses (HSUPA) in the Serving cell, retransmission sequence number (RSN) information that subscriber equipment carries at ascending control channel and the transmission confirmation of described base station in the process of the transmission of data;

Whether described base station is correctly transmitted according to the data that subscriber equipment sends, and described HARQ ID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power.

Further, said method also has following characteristics: whether described base station is correctly transmitted according to the data that subscriber equipment sends, and described HARQ ID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power, comprising:

Whether the data that described base station sends according to subscriber equipment by correct transmission, described HARQ ID, described RSN information and described transmission confirmation, the transmitted error rate of calculating subscriber equipment in the corresponding HARQ instance process;

Described transmitted error rate and the error threshold value that presets are compared, obtain corresponding power compensating value;

Adjust the E-HICH transmitting power by described power compensating value.

Further, said method also has following characteristics: whether the data that described base station sends according to subscriber equipment comprise by the affirmation information of correct transmission, described HARQ ID, described RSN information and described transmission, the transmitted error rate ErrorRate of calculating subscriber equipment in the corresponding HARQ instance process:

ErrorRate is calculated by following formula in described base station:

$\mathrm{ErrorRate}=\frac{\mathrm{ErrorCounter}}{\mathrm{ErrorCounter}+\mathrm{CorrectCounter}}\×100$

Wherein, ErrorCounter is the error of transmission counter, acts in HARQ process corresponding to all subscriber equipmenies, and ErrorCounter is initialized as 0, and counting rule is as follows:

When number of retransmissions less than 3, described base station sends the transmission confirmation (NACK) of negating, but the new RSN that receives is during less than or equal to old RSN, ErrorCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, but the new RSN that receives is not equal to 2 when adding number of retransmissions divided by 2 remainder, ErrorCounter is from adding once;

Wherein, CorrectCounter acts in the same HARQ process of same subscriber equipment for the correct counter of transmission, and CorrectCounter is initialized as 0, and counting rule is as follows:

When the transmission confirmation (ACK) that the transmission of described base station is determined, the new RSN that receives equals old RSN and equals at 0 o'clock, and CorrectCounter is from adding once;

When number of retransmissions less than 3, described base station sends NACK, and new RSN is during greater than old RSN, CorrectCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, and the new RSN that receives equals 2 when adding number of retransmissions divided by 2 remainder, CorrectCounter is from adding once.

Further, said method also has following characteristics: described described transmitted error rate and the error threshold value that presets are compared, obtain corresponding power compensating value, adjust the E-HICH transmitting power by described power compensating value, comprising:

Be one or more power per liter step values that presets if described transmitted error rate, then obtains described power compensating value greater than the first error threshold value, then current E-HICH transmitting power added this one or more power per liter step value of presetting;

If described transmitted error rate less than the second error threshold value, then obtains described power compensating value be 1 preset the power step size value falls, then current E-HICH transmitting power is deducted this 1 preset the power step size value falls;

Described the first error threshold value is greater than described the second error threshold value.

In order to address the above problem, the present invention also provides a kind of base station, comprising:

Acquisition module is used for obtaining the user power surplus (UPH) that all interior configuration high-speed uplink packet of Serving cell access (HSUPA) professional subscriber equipment;

First arranges module, is used for arranging according to the maximum transmission power of the maximum transmission power of UPH, UE and E-HICH the Initial Trans of E-HICH.

Further, above-mentioned base station also has following characteristics:

Described first arranges module, is used for the maximum transmission power P according to UPH, UE _MaxMaximum transmission power EHICH with E-HICH _PowerMaxThe Initial Trans EHICH of E-HICH is set _Power, comprising:

Calculate bias power EHICH _PowerRatio, wherein,

EHICH _Power＝EHICH _PowerRatio×EHICH _PowerMax×α+β；

Wherein, P _{UPH_Max}Be the power after the UPH conversion of the minimum in all subscriber equipmenies in the Serving cell; α is compensation coefficient, α ∈ [0.1,2]; β is improvement factor.

Further, above-mentioned base station also has following characteristics: comprise that also second arranges module,

Described acquisition module, also be used for the process at the transmission of data, obtain the hybrid automatic repeat request process sign (HARQ ID) of the subscriber equipment of all the configuration HSUPA business in the Serving cell, retransmission sequence number (RSN) information that subscriber equipment carries at ascending control channel and the transmission confirmation of described base station;

Whether described second arranges module, be used for correctly being transmitted according to the data that subscriber equipment sends, and described HARQ ID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power.

Further, above-mentioned base station also has following characteristics: described second arranges module comprises:

First module, whether the data that are used for sending according to subscriber equipment calculate subscriber equipment transmitted error rate in corresponding HARQ instance process by correct transmission, described HARQ ID, described RSN information and described transmission confirmation;

Second unit is used for described transmitted error rate and the error threshold value that presets are compared, and obtains corresponding power compensating value;

Unit the 3rd is used for adjusting the E-HICH transmitting power by described power compensating value.

Further, above-mentioned base station also has following characteristics:

Described first module, concrete being used for calculated ErrorRate by following formula:

$\mathrm{ErrorRate}=\frac{\mathrm{ErrorCounter}}{\mathrm{ErrorCounter}+\mathrm{CorrectCounter}}\×100$

Wherein, ErrorCounter is the error of transmission counter, acts in HARQ process corresponding to all subscriber equipmenies, and ErrorCounter is initialized as 0, and counting rule is as follows:

When number of retransmissions less than 3, described base station sends the transmission confirmation (NACK) of negating, but the new RSN that receives is during less than or equal to old RSN, ErrorCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, but the new RSN that receives is not equal to 2 when adding number of retransmissions divided by 2 remainder, ErrorCounter is from adding once;

Wherein, CorrectCounter acts in HARQ process corresponding to all subscriber equipmenies for the correct counter of transmission, and CorrectCounter is initialized as 0, and counting rule is as follows:

When the transmission confirmation (ACK) that the transmission of described base station is determined, the new RSN that receives equals old RSN and equals at 0 o'clock, and CorrectCounter is from adding once;

When number of retransmissions less than 3, described base station sends NACK, and new RSN is during greater than old RSN, CorrectCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, and the new RSN that receives equals 2 when adding number of retransmissions divided by 2 remainder, CorrectCounter is from adding once.

Further, above-mentioned base station also has following characteristics:

Described second unit if specifically be used for judging described transmitted error rate greater than the first error threshold value, then obtain described power compensating value and is one or more power per liter step values that presets; If judge described transmitted error rate less than the second error threshold value, then obtain described power compensating value and be 1 preset the power step size value falls, described the first error threshold value is greater than described the second error threshold value;

Described Unit the 3rd, concrete being used for adds this one or more power per liter step value of presetting with current E-HICH transmitting power; Or with current E-HICH transmitting power deduct this 1 preset the power step size value falls.

To sum up, the invention provides a kind of method and base station of the E-HICH of control transmitting power, be used for to realize the accurate power control of E-HICH channel, on the basis of the effective communication of guarantee information, reduces required transmitting power, and then the lifting network performance.

Description of drawings

Fig. 1 is the schematic diagram of the base station of the embodiment of the invention;

Fig. 2 is the flow chart of method of the control E-HICH transmitting power of the embodiment of the invention one;

Fig. 3 is the flow chart of method of the control E-HICH transmitting power of the embodiment of the invention two.

Embodiment

Just provided simply the power that E-HICH can be set by the power bias method in the existing protocol, do not provide the power bias technical scheme that E-HICH rationally is set, therefore, exist following defective: because different type of service and channel circumstances, to descending E-HICH transmitting power require different, if power setting is too high, the transmitting power of other physical channels in the residential quarter will be affected; And if power setting is on the low side, then UE can't correctly be known the HAEQ indication information that is carried on the E-HICH, thereby the correct realization of HARQ functions of retransmission and the uplink throughput of HSUPA (High Speed Uplink Packet Access, High Speed Uplink Packet access) system have been affected.

After the user initiates the HSUPA business, EAGCH (E-DCH Absolute Grant Channel, absolute grant channel), EPUCH, EHICH begin as the HSUPA data service provides service, wherein, EAGCH, EHICH provide necessary control information transmission service for the EPUCH transport service.Which resource at first carries configuration information notice UE outgoing data by EAGCH can send in, can carry out the confirmation of receipt indication at the EHICH channel finish the reception of EPUCH as NodeB after, and correct the reception sends ACK, incorrect transmission NACK.Data on the EPUCH channel are if new biography, and the new biography RSN=0 that it carries retransmits RSN＞0, and every multiple biography once from adding once, abandons after surpassing maximum retransmission.

If the affirmation data of EHICH can not correctly be obtained the mistake that may cause the data that normally receive again to retransmit by UE, thereby wasted resource and reduced network performance, if in order to guarantee that all UE can be with higher success rate confirmation of receipt information then need to launch with relatively high power, because the EHICH channel is a broadcast channel, all UE share, Here it is, and most equipment all disposes this channel with maximum power transmission, and does not do the reason of accurate control.

For making the purpose, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing embodiments of the invention are elaborated.Need to prove that in the situation of not conflicting, the embodiment among the application and the feature among the embodiment be combination in any mutually.

Fig. 1 is the schematic diagram of the base station of the embodiment of the invention, and as shown in Figure 1, the base station of present embodiment comprises:

Acquisition module: UPH (the UE Power Headroom that is used for obtaining the subscriber equipment of all configuration high-speed uplink packet access (HSUPA) business in the Serving cell, the user power surplus), can also obtain retransmission sequence number (RSN) information that hybrid automatic repeat request process sign (HARQ ID), subscriber equipment carry at ascending control channel and the transmission confirmation of described base station;

Particularly, in the data that E-RUCCH (enhanced uplink random access channel) channel carries, solve UPH by UE, and be kept at separately in the data memory module for each user, only record up-to-date UPH numerical value, will be capped before, this value is as the first direct basis that passes power change in the E-HICH power bias computing module of new user, and same also needing detects and preserve the information such as HARQ ID, RSN.

The transmission confirmation of described base station is ACK or NACK.

First arranges module, is used for arranging according to the maximum transmission power of the maximum transmission power of UPH, UE and E-HICH the Initial Trans of E-HICH.

Whether second arranges module, be used for correctly being transmitted according to the data that subscriber equipment sends, and described HARQ ID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power.

Wherein, described first arranges module, is used for the maximum transmission power P according to UPH, UE _MaxMaximum transmission power EHICH with E-HICH _PowerMaxThe Initial Trans EHICH of E-HICH is set _Power, comprising:

Calculate bias power EHICH _PowerRatio, wherein,

EHICH _Power＝EHICH _PowerRatio×EHICH _PowerMax×α+β；

Wherein, P _{UPH_Max}Be the power after the UPH conversion of the minimum in all subscriber equipmenies in the Serving cell; α is compensation coefficient, α ∈ [0.1,2]; β is improvement factor.

Wherein, described second module be set comprise:

First module, whether the data that are used for sending according to subscriber equipment calculate subscriber equipment transmitted error rate in corresponding HARQ instance process by correct transmission, described HARQID, described RSN information and described transmission confirmation;

Second unit is used for described transmitted error rate and the error threshold value that presets are compared, and obtains corresponding power compensating value;

Unit the 3rd is used for adjusting the E-HICH transmitting power by described power compensating value.

Described first module specifically is used for calculating ErrorRate by following formula:

$\mathrm{ErrorRate}=\frac{\mathrm{ErrorCounter}}{\mathrm{ErrorCounter}+\mathrm{CorrectCounter}}\×100$

Wherein, ErrorCounter is the error of transmission counter, acts in HARQ process corresponding to all subscriber equipmenies, and ErrorCounter is initialized as 0, and counting rule is as follows:

When number of retransmissions less than 3, described base station sends the affirmation information (NACK) of negating, but the new RSN that receives is during less than or equal to old RSN, ErrorCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends the affirmation information (NACK) of negating, but the new RSN that receives is not equal to 2 when adding number of retransmissions divided by 2 remainder, ErrorCounter is from adding once;

Wherein, CorrectCounter acts in HARQ process corresponding to all subscriber equipmenies for the correct counter of transmission, and CorrectCounter is initialized as 0, and counting rule is as follows:

As described base station transmission ACK, the new RSN that receives equals old RSN and equals at 0 o'clock, and CorrectCounter is from adding once;

When number of retransmissions less than 3, described base station sends NACK, and new RSN is during greater than old RSN, CorrectCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, and the new RSN that receives equals 2 when adding number of retransmissions divided by 2 remainder, CorrectCounter is from adding once.

Wherein, if described second unit then obtains described power compensating value and is one or more power per liter step values that presets specifically for judging described transmitted error rate greater than the first error threshold value; If judge described transmitted error rate less than the second error threshold value, then obtain described power compensating value and be 1 preset the power step size value falls, described the first error threshold value is greater than described the second error threshold value;

Described Unit the 3rd, concrete being used for adds this one or more power per liter step value of presetting with current E-HICH transmitting power; Or with current E-HICH transmitting power deduct this 1 preset the power step size value falls.

The base station of present embodiment can also comprise: data memory module, be used for preserving the affiliated user's of NodeB UPH information and corresponding E-HICH transmitting power, the ERRORRATE (transmitted error rate) of residential quarter HSUPA business, various processes and professional number of retransmissions.Data in the notebook data memory module can by all process transfers and the modification in the present embodiment, be used for preserving all proprietary data information that relate to.

Wherein, the ratio of UPH Parametric Representation maximum UE transmitting power and corresponding Pe-base (the minimum received power that the network expectation is received) and Serving cell path loss code word power sum.Can calculate into each UE sends the required E-HICH power bias ratio of data, as Δ EHICH by this information _Power＜Δ EHICH _{Th_Power}The time, do not upgrade the first power bias of E-HICH, surpass afterwards with EHICH _Power± PowerControl_Step replacement EHICH transmitting power.

Δ EHICH _PowerThe absolute value of the difference of last E-HICH channel emission power and current transmitting power, Δ EHICH _Power=| EHICH _Power(n)-EHICH _Power(n-1) |.

PowerControl_Step is the step-length of each time E-HICH channel power variation.

Can be according to BLER Target (the Block Error Ratio Target of system configuration, the desired value of bLock error rate) determines required power control step-length in the ratio mode, be 5% such as BLER Target, raising so power step size is (N*0.05) dB, the downward modulation power step size is (1-N*0.05) dB, N is the integer greater than 0, is defaulted as 1.

Calculate for each UE carries out the power bias ratio, adopt at last conduct output maximum in the current area, Δ EHICH _PowerIt is the cell-level calculating parameter.

The E-HICH transmitting power just can be upgraded after the minimum UPH among netinit and all UE changes.

Before dynamically arranging the E-HICH transmitting power, can also judge whether to surpass initial guard time, after surpassing initial guard time, dynamically arrange again the E-HICH transmitting power, to prevent from causing very little because of sample number the shake of ERRORRATE data.

Fig. 2 is the flow chart of method of the control E-HICH transmitting power of the embodiment of the invention one, and as shown in Figure 2, the method for present embodiment comprises following step:

S10, base station obtain the UPH of the subscriber equipment of all the configuration HSUPA business in the Serving cell;

S20, base station arrange the Initial Trans of E-HICH according to the maximum transmission power of the maximum transmission power of UPH, UE and E-HICH.

The method of the Initial Trans of the configuration E-HICH of present embodiment is compared with the Initial Trans that a maximum is set in the prior art, effectively saving power.

In the process of the transmission of data, can comprise following step:

The RSN information that the HARQ ID, subscriber equipment that S30, base station obtain the subscriber equipment of all the configuration HSUPA business in the Serving cell carries at ascending control channel and the transmission confirmation of described base station;

Whether S40, base station are correctly transmitted according to the data that subscriber equipment sends, and described HARQ ID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power.

Like this, in the process of the transmission of data, dynamically control E-HICH transmitting power, further saving power resource.

Below with specific embodiment method of the present invention is described in detail.

After having some users to dispose the HSUPA business in a certain residential quarter, after UE uploaded E-PUCH and E-UCCH, as shown in Figure 3, the NodeB side was carried out following operation:

Step 101:NodeB measures and adds up UPH, HARQ ID, the RSN of all UE;

NodeB obtains the UPH of the professional UE of all configuration HSUPA in the Serving cell and monitors the RSN information of carrying on the EPUCH channel.

Choose that UPH value of all user's minimums in the network, because EHICH is shared channel, ensuring coverage to all users, namely that user's of UPH value minimum channel circumstance is the poorest.

When UE initiates the up-high speed data service, by E-RUCCH channel SI reporting (Schedule Information, schedule information), carry the information that SNPL (Serving and Neighbor Cell Pathloss, the path loss of Serving cell and neighbor cell), UPH etc. can reflect UE path loss and transmitting power on this channel.

Step 102: judge whether the first E-HICH of biography, the first transmitting power of EHICH adopts open loop power control, is then to enter step 103, otherwise is then to enter step 104.

Step 103: the first E-HICH of biography bias power is set;

In order to realize comparatively accurately power control, at first to know the maximum EHICH transmitting power that all UE need in the Serving cell, the maximum transmission power of EHICH is determined by eNodeB.Detect the maximum path loss power of all UE of current area configuration HSUPA business, according to the agreement regulation, obtain after the UPH information calculations that this information is reported by E-RUCCH by UE.

(maximum transmission power of all UE of acquiescence is consistent in TDSCDMA in conjunction with the maximum transmission power of UE, determined by system configuration), after UPH being converted to the milliwatt power of UE, deduct it and compare with maximum transmission power with the maximum transmission power of UE, and then obtain a ratio, this ratio more path loss or the disturbed condition of the bright UE of novel is more serious, and the power that correct decryption needs is also just higher.Bias power can obtain by following formula:

${\mathrm{EHICH}}_{\mathrm{PowerRatio}}=\frac{P_{\mathrm{Max}}-P_{\mathrm{UPH}\_\mathrm{Max}}}{P_{\mathrm{Max}}}$

Can obtain accordingly between the proportional band of the required transmitting power of the correct decryption of UE energy; be mapped on the EHICH according to this ratio; multiply by a coefficient with this ratio adds an adjusted basis and can obtain HSUPA business initializtion transmitting power; the setting of these two coefficients is in order to give certain power protection; α is set to 1 generally speaking; β is set to 3, if the EHICH power of output is greater than maximum transmission power then get maximum transmission power.HSUPA business initializtion transmitting power EHICH _PowerCan calculate by following formula:

EHICH _Power＝EHICH _PowerRatio×EHICH _PowerMax×α+β

P _Max: the maximum transmission power of UE;

P _{UPH_Max}: the transmission power that obtains current UE after the UPH value of the minimum among all UE in the residential quarter converted;

EHICH _PowerMax: the maximum transmission power of EHICH channel, unit are dB;

EHICH _Power: the power output of EHICH channel, unit is dB;

α: compensation coefficient, α ∈ [0.1,2] is defaulted as 1;

β: improvement factor, can customize, be defaulted as 3dB;

Above power unit is milliwatt, and EHICH need to be converted into dB during output.

Then, skip to step 107.

Step 104:E-HICH ERRORRATE calculates, and whether the data on the assessment EHICH are effectively received, and can be judged in conjunction with the logical relation between the RSN that carries on the EPUCH by the ACK/NACK indication that NodeB side in same user's the same HARQ process sends;

Relation by EHICH channel and E-UCCH interchannel is come a self-defined ERRORRATE who is specific to E-HICH, this is because of after the resource of receiving as NodeB from UE, send ACK/NACK information by E-HICH to the UE under it, because there are strict timing relationship in E-HICH channel and E-UCCH channel, and carry in the E-UCCH channel and pass to some extent resource identification, so just need not carry resource indication information in the E-HICH channel, UE also knows the affirmation which resource is carried out.

When receiving NACK, the UE data retransmission, which inferior re-transmission will identify in the RSN position of E-UCCH channel at this moment is, corresponding concrete resource above after the maximum retransmission, is counted at every turn+1 again; After receiving ACK, the RSN zero clearing mistake occurred if the RSN non-zero also is transmission course.

Just can obtain each UE ERRORRATE within a certain period of time by the RSN to Resource Block, by setting ERRORRATE Target, adjust the bias power of E-HICH thereupon, just can introduce dynamic open Loop Power control mechanism.

E-PUCH resource ERRORRATE computational methods:

$\mathrm{ErrorRate}=\frac{\mathrm{ErrorCounter}}{\mathrm{ErrorCounter}+\mathrm{CorrectCounter}}\×100$

ErrorCounter (error of transmission counter) acts in HARQ process corresponding to all subscriber equipmenies, and this counter is initialized as 0, adds up in sliding window, and maximum is ErrorCounter_Max:

NodeB send NACK and the RSN that receives do not meet below during rule, the error of transmission counter is from adding once, n is number of retransmissions,

$\left\{\begin{array}{cc}{\mathrm{RSN}}_{\mathrm{New}}\&le;{\mathrm{RSN}}_{\mathrm{Old}}& n<3\\ {\mathrm{RSN}}_{\mathrm{New}}\&NotEqual;2+\left(n\mathrm{mod}2\right)& n\&GreaterEqual;3\end{array}\right..$

CorrectCounter (transmitting correct counter) acts in HARQ process corresponding to all subscriber equipmenies, and this counter is initialized as 0, adds up in sliding window, and maximum is CorrectCounter_Max:

NodeB sends ACK and in the situation of the RSN_NEW=RSN_OLD=0 that receives, transmits correct counter from adding once;

NodeB send NACK and the RSN that receives meet below during rule, transmit correct counter from adding once:

$\left\{\begin{array}{cc}{\mathrm{RSN}}_{\mathrm{New}}\&le;{\mathrm{RSN}}_{\mathrm{Old}}& n<3\\ {\mathrm{RSN}}_{\mathrm{New}}\&NotEqual;2+\left(n\mathrm{mod}2\right)& n\&GreaterEqual;3\end{array}\right..$

Step 105: determine the power control step-length;

BLER Target according to system configuration determines required power control step-length in the ratio mode, is 5% such as BLER Target, and raising so power step size is (N*0.05) dB, and the downward modulation power step size is (1-N*0.05) dB, and N is the integer greater than 0.Then, enter step 106.

Step 106: compare according to ERRORRATE and error threshold value, obtain output power back off.When the statistical sample of ERRORRATE does not satisfy predetermined quantity, then jump directly to step 107, if satisfy, calculate the output power back off value below then carrying out;

If ERRORRATE＞U_Target then increases the transmitting power of 1 power per liter step-length, U_Target is the power per liter thresholding, is defaulted as 10%;

If ERRORRATE＜D_Target then reduces by 1 transmitting power of falling power step size, power threshold falls in D_Target, is defaulted as 5%;

Then enter step 107.

Step 107: E-HICH transmitting power after output is adjusted.

The invention provides a kind of method and base station of the E-HICH of control transmitting power, be used for realizing the power control of E-HICH, compared with prior art, with crossing the cooperation of Open-closed-loop power, both guaranteed the effective communication of information, further promote again the accuracy of power control, reduced unnecessary interference power, promoted network performance.

One of ordinary skill in the art will appreciate that all or part of step in the said method can come the instruction related hardware to finish by program, described program can be stored in the computer-readable recording medium, such as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

Below only be the preferred embodiments of the present invention; certainly; the present invention also can have other various embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (16)

1. method of controlling the E-HICH transmitting power comprises:

The base station obtains the user power surplus (UPH) of the subscriber equipment of all configuration high-speed uplink packet access (HSUPA) business in the Serving cell;

Described base station arranges the Initial Trans of E-HICH according to the maximum transmission power of the maximum transmission power of UPH, UE and E-HICH.

2. the method for claim 1, it is characterized in that: described base station is according to the maximum transmission power P of UPH, UE _MaxMaximum transmission power EHICH with E-HICH _PowerMaxThe Initial Trans EHICH of E-HICH is set _PowerComprise:

Calculate bias power EHICH _PowerRatio, wherein,

EHICH _Power＝EHICH _PowerRatio×EHICH _PowerMax×α+β；

Wherein, P _{UPH_Max}Be the power after the UPH conversion of the minimum in all subscriber equipmenies in the Serving cell; α is compensation coefficient, α ∈ [0.1,2]; β is improvement factor.

3. method as claimed in claim 1 or 2, it is characterized in that: described base station arranges after the Initial Trans of E-HICH, in the process of the transmission of data, comprising:

Described base station obtains the hybrid automatic repeat request process sign (HARQ ID) of the subscriber equipment of all the configuration HSUPA business in the Serving cell, retransmission sequence number (RSN) information that subscriber equipment carries at ascending control channel and the transmission confirmation of described base station;

Whether described base station is correctly transmitted according to the data that subscriber equipment sends, and described HARQ ID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power.

4. method as claimed in claim 3 is characterized in that: whether described base station is correctly transmitted according to the data that subscriber equipment sends, and described HARQ ID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power, comprising:

Whether the data that described base station sends according to subscriber equipment by correct transmission, described HARQ ID, described RSN information and described transmission confirmation, the transmitted error rate of calculating subscriber equipment in the corresponding HARQ instance process;

Described transmitted error rate and the error threshold value that presets are compared, obtain corresponding power compensating value;

Adjust the E-HICH transmitting power by described power compensating value.

5. method as claimed in claim 4, it is characterized in that: whether the data that described base station sends according to subscriber equipment comprise by the affirmation information of correct transmission, described HARQ ID, described RSN information and described transmission, the transmitted error rate ErrorRate of calculating subscriber equipment in the corresponding HARQ instance process:

ErrorRate is calculated by following formula in described base station:

$\mathrm{ErrorRate}=\frac{\mathrm{ErrorCounter}}{\mathrm{ErrorCounter}+\mathrm{CorrectCounter}}\&times;100$

Wherein, ErrorCounter is the error of transmission counter, acts in HARQ process corresponding to all subscriber equipmenies, and ErrorCounter is initialized as 0, and counting rule is as follows:

When number of retransmissions less than 3, described base station sends the transmission confirmation (NACK) of negating, but the new RSN that receives is during less than or equal to old RSN, ErrorCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, but the new RSN that receives is not equal to 2 when adding number of retransmissions divided by 2 remainder, ErrorCounter is from adding once;

Wherein, CorrectCounter acts in the same HARQ process of same subscriber equipment for the correct counter of transmission, and CorrectCounter is initialized as 0, and counting rule is as follows:

When the transmission confirmation (ACK) that the transmission of described base station is determined, the new RSN that receives equals old RSN and equals at 0 o'clock, and CorrectCounter is from adding once;

When number of retransmissions less than 3, described base station sends NACK, and new RSN is during greater than old RSN, CorrectCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, and the new RSN that receives equals 2 when adding number of retransmissions divided by 2 remainder, CorrectCounter is from adding once.

6. such as claim 4 or 5 described methods, it is characterized in that: described described transmitted error rate and the error threshold value that presets are compared, obtain corresponding power compensating value, adjust the E-HICH transmitting power by described power compensating value, comprising:

Be one or more power per liter step values that presets if described transmitted error rate, then obtains described power compensating value greater than the first error threshold value, then current E-HICH transmitting power added this one or more power per liter step value of presetting;

If described transmitted error rate less than the second error threshold value, then obtains described power compensating value be 1 preset the power step size value falls, then current E-HICH transmitting power is deducted this 1 preset the power step size value falls;

Described the first error threshold value is greater than described the second error threshold value.

7. method of controlling the E-HICH transmitting power comprises:

The base station obtains the hybrid automatic repeat request process sign (HARQ ID) of the professional subscriber equipment of all configuration high-speed uplink packet accesses (HSUPA) in the Serving cell, retransmission sequence number (RSN) information that subscriber equipment carries at ascending control channel and the transmission confirmation of described base station in the process of the transmission of data;

Whether described base station is correctly transmitted according to the data that subscriber equipment sends, and described HARQID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power.

8. method as claimed in claim 7 is characterized in that: whether described base station is correctly transmitted according to the data that subscriber equipment sends, and described HARQ ID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power, comprising:

Whether the data that described base station sends according to subscriber equipment by correct transmission, described HARQ ID, described RSN information and described transmission confirmation, the transmitted error rate of calculating subscriber equipment in the corresponding HARQ instance process;

Described transmitted error rate and the error threshold value that presets are compared, obtain corresponding power compensating value;

Adjust the E-HICH transmitting power by described power compensating value.

9. method as claimed in claim 8, it is characterized in that: whether the data that described base station sends according to subscriber equipment comprise by the affirmation information of correct transmission, described HARQ ID, described RSN information and described transmission, the transmitted error rate ErrorRate of calculating subscriber equipment in the corresponding HARQ instance process:

ErrorRate is calculated by following formula in described base station:

$\mathrm{ErrorRate}=\frac{\mathrm{ErrorCounter}}{\mathrm{ErrorCounter}+\mathrm{CorrectCounter}}\&times;100$

Wherein, ErrorCounter is the error of transmission counter, acts in HARQ process corresponding to all subscriber equipmenies, and ErrorCounter is initialized as 0, and counting rule is as follows:

When number of retransmissions less than 3, described base station sends the transmission confirmation (NACK) of negating, but the new RSN that receives is during less than or equal to old RSN, ErrorCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, but the new RSN that receives is not equal to 2 when adding number of retransmissions divided by 2 remainder, ErrorCounter is from adding once;

Wherein, CorrectCounter acts in the same HARQ process of same subscriber equipment for the correct counter of transmission, and CorrectCounter is initialized as 0, and counting rule is as follows:

When the transmission confirmation (ACK) that the transmission of described base station is determined, the new RSN that receives equals old RSN and equals at 0 o'clock, and CorrectCounter is from adding once;

When number of retransmissions less than 3, described base station sends NACK, and new RSN is during greater than old RSN, CorrectCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, and the new RSN that receives equals 2 when adding number of retransmissions divided by 2 remainder, CorrectCounter is from adding once.

10. method as claimed in claim 8 or 9 is characterized in that: described described transmitted error rate and the error threshold value that presets are compared, obtain corresponding power compensating value, adjust the E-HICH transmitting power by described power compensating value, comprising:

Be one or more power per liter step values that presets if described transmitted error rate, then obtains described power compensating value greater than the first error threshold value, then current E-HICH transmitting power added this one or more power per liter step value of presetting;

If described transmitted error rate less than the second error threshold value, then obtains described power compensating value be 1 preset the power step size value falls, then current E-HICH transmitting power is deducted this 1 preset the power step size value falls;

Described the first error threshold value is greater than described the second error threshold value.

11. a base station comprises:

Acquisition module is used for obtaining the user power surplus (UPH) that all interior configuration high-speed uplink packet of Serving cell access (HSUPA) professional subscriber equipment;

First arranges module, is used for arranging according to the maximum transmission power of the maximum transmission power of UPH, UE and E-HICH the Initial Trans of E-HICH.

12. base station as claimed in claim 11 is characterized in that:

Described first arranges module, is used for the maximum transmission power P according to UPH, UE _MaxMaximum transmission power EHICH with E-HICH _PowerMaxThe Initial Trans EHICH of E-HICH is set _Power, comprising:

Calculate bias power EHICH _PowerRatio, wherein,

EHICH _Power＝EHICH _PowerRatio×EHICH _PowerMax×α+β；

Wherein, P _{UPH_Max}Be the power after the UPH conversion of the minimum in all subscriber equipmenies in the Serving cell; α is compensation coefficient, α ∈ [0.1,2]; β is improvement factor.

13. such as claim 11 or 12 described base stations, it is characterized in that: comprise that also second arranges module,

Described acquisition module, also be used for the process at the transmission of data, obtain the hybrid automatic repeat request process sign (HARQ ID) of the subscriber equipment of all the configuration HSUPA business in the Serving cell, retransmission sequence number (RSN) information that subscriber equipment carries at ascending control channel and the transmission confirmation of described base station;

Whether described second arranges module, be used for correctly being transmitted according to the data that subscriber equipment sends, and described HARQ ID, described RSN information and described transmission confirmation dynamically arrange the E-HICH transmitting power.

14. base station as claimed in claim 13 is characterized in that: described second arranges module comprises:

First module, whether the data that are used for sending according to subscriber equipment calculate subscriber equipment transmitted error rate in corresponding HARQ instance process by correct transmission, described HARQ ID, described RSN information and described transmission confirmation;

Second unit is used for described transmitted error rate and the error threshold value that presets are compared, and obtains corresponding power compensating value;

Unit the 3rd is used for adjusting the E-HICH transmitting power by described power compensating value.

15. base station as claimed in claim 14 is characterized in that:

Described first module, concrete being used for calculated ErrorRate by following formula:

$\mathrm{ErrorRate}=\frac{\mathrm{ErrorCounter}}{\mathrm{ErrorCounter}+\mathrm{CorrectCounter}}\&times;100$

Wherein, ErrorCounter is the error of transmission counter, acts in HARQ process corresponding to all subscriber equipmenies, and ErrorCounter is initialized as 0, and counting rule is as follows:

When number of retransmissions less than 3, described base station sends the transmission confirmation (NACK) of negating, but the new RSN that receives is during less than or equal to old RSN, ErrorCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, but the new RSN that receives is not equal to 2 when adding number of retransmissions divided by 2 remainder, ErrorCounter is from adding once;

Wherein, CorrectCounter acts in HARQ process corresponding to all subscriber equipmenies for the correct counter of transmission, and CorrectCounter is initialized as 0, and counting rule is as follows:

When the transmission confirmation (ACK) that the transmission of described base station is determined, the new RSN that receives equals old RSN and equals at 0 o'clock, and CorrectCounter is from adding once;

When number of retransmissions less than 3, described base station sends NACK, and new RSN is during greater than old RSN, CorrectCounter is from adding once;

When number of retransmissions more than or equal to 3, described base station sends NACK, and the new RSN that receives equals 2 when adding number of retransmissions divided by 2 remainder, CorrectCounter is from adding once.

16. such as the described base station of claims 14 or 15, it is characterized in that:

Described second unit if specifically be used for judging described transmitted error rate greater than the first error threshold value, then obtain described power compensating value and is one or more power per liter step values that presets; If judge described transmitted error rate less than the second error threshold value, then obtain described power compensating value and be 1 preset the power step size value falls, described the first error threshold value is greater than described the second error threshold value;

Described Unit the 3rd, concrete being used for adds this one or more power per liter step value of presetting with current E-HICH transmitting power; Or with current E-HICH transmitting power deduct this 1 preset the power step size value falls.

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