CN102412945B - Power configuration method for physical harq indication channel - Google Patents
Power configuration method for physical harq indication channel Download PDFInfo
- Publication number
- CN102412945B CN102412945B CN201110350589.4A CN201110350589A CN102412945B CN 102412945 B CN102412945 B CN 102412945B CN 201110350589 A CN201110350589 A CN 201110350589A CN 102412945 B CN102412945 B CN 102412945B
- Authority
- CN
- China
- Prior art keywords
- pusch
- mrow
- ack
- gain factor
- power gain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000005540 biological transmission Effects 0.000 claims abstract description 47
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 claims description 54
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 claims description 54
- 230000003828 downregulation Effects 0.000 claims description 41
- 230000003827 upregulation Effects 0.000 claims description 14
- 125000004122 cyclic group Chemical group 0.000 claims description 11
- 230000001186 cumulative effect Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 238000009825 accumulation Methods 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 4
- 241000760358 Enodes Species 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 101100272279 Beauveria bassiana Beas gene Proteins 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims 3
- 150000004706 metal oxides Chemical class 0.000 claims 2
- 230000011664 signaling Effects 0.000 claims 1
- 230000002222 downregulating effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000013468 resource allocation Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a power configuration method for a physical harq indication channel (PHICH). In the method, the power of the PHICH is adjusted according to the quality of transmission performed by the PHICH the last time, so the power configuration of the current PHICH is coincided with the quality of the PHICH; therefore, dynamic configuration of the PHICH can be realized effectively and the utilization of power resources of the PHICH can be optimized.
Description
Technical Field
The present invention relates to a resource allocation technique in mobile communication, and in particular, to a power allocation method for a physical hybrid repeat request indicator channel (PHICH).
Background
In the LTE system, when performing Physical Uplink Shared Channel (PUSCH) transmission, ACK/NACK information for PUSCH transmission needs to be indicated by a PHICH. The current PHICH transmission process mainly includes the following steps: firstly, a base station (eNB) decodes information on a PUSCH and generates ACK (acknowledgement) or NACK (negative acknowledgement) information according to a CRC (cyclic redundancy check) check result; then, the eNB calculates the PHICH group position occupied by ACK/NACK transmission and the sequence position in the group according to the resource position of the PUSCH; finally, a plurality of PHICH sequences within the group are Code Division (CDM) multiplexed, and PHICHs are transmitted.
It can be seen from the above procedure that a multi-user CDM form is employed on PHICH, and sequence spreading is employed for ACK/NACK transmission without Cyclic Redundancy Check (CRC).
Since the PHICH has no CRC check, and a closed-loop power control mechanism that UE sends TPC to adjust PHICH power is not adopted, the transmission quality of the PHICH needs to be set by the eNB. In the existing system, the power setting of the PHICH is usually according to a fixed power setting, and is not dynamically adjusted. Thus, there is a problem in that power setting of the PHICH is not proper. This not only affects the PHICH transmission, but also further affects the transmission of PUSCH; correspondingly, since the PDCCH shares the system-configurable downlink total power with other downlink channels, the power allocation of other downlink channels, especially the PDCCH, will also be affected, further affecting the scheduled transmission of the PDSCH/PUSCH.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a power configuration method for a physical hybrid retransmission indicator channel, which can implement dynamic configuration of PHICH power and optimize utilization of PHICH power resources.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a power configuration method of a physical hybrid retransmission indicator channel (PHICH) comprises the following steps:
a. when at time i, the base station eNode B receives the user equipment UEmWhen the physical uplink shared channel PUSCH data of the hybrid automatic repeat request HARQ process n is received, determining corresponding ACK/NACK information HI (i) needing to be fed back according to a cyclic check code CRC check result obtained after decoding the PUSCH data, and sending the HI (i) to the UE through a PHICHm；
b. When the base station needs to receive the PUSCH data of the HARQ process n again at the time j, if the PUSCH data is received, determining corresponding ACK/NACK information HI (j) needing to be fed back according to a cyclic check code CRC check result obtained after decoding the PUSCH data;
c. the base station judges whether the HI (i) is transmitted correctly according to the receiving result of the PUSCH data at the time j and the HI (i), and according to the judging result and the HI (j), the base station judges that the UE is about to transmit the PUSCH data to the UE most recentlymAnd the transmitted ACK/NACK information carries out power control.
In summary, the power configuration method for the physical hybrid and retransmission indicator channel provided by the present invention adjusts the power of the PHICH channel according to the quality of the last PHICH transmission, so that the current power configuration of the PHICH channel matches the quality of the PHICH channel, thereby effectively implementing dynamic configuration of the PHICH channel and optimizing the utilization of PHICH power resources.
Drawings
Fig. 1 is a schematic flow chart according to a first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The core idea of the invention is as follows: and adjusting the power of the PHICH according to the quality of the last PHICH transmission so as to enable the current power configuration of the PHICH to be consistent with the quality of the PHICH, thereby realizing the dynamic configuration of the PHICH.
Fig. 1 is a schematic flow chart according to a first embodiment of the present invention. As shown in fig. 1, the first embodiment mainly includes the following steps:
Here, using the CRC check result, the hi (i) is obtained and fed back to the UEmThereafter, the UE determines whether data retransmission is required according to the hi (i), so that in step 103, the correctness of transmission of the hi (i) can be determined according to the next data receiving situation and the hi (i), and the current power gain factor can be dynamically adjusted accordingly to adapt to the situationAnd the current channel condition.
Specifically, the determining method of the hi (i) in this step is: HI (i) is ACK if the CRC check result is 0; otherwise, hi (i) ═ NACK.
Here, when the base station receives the PUSCH data of the HARQ process n for the first time after time j is time i, at this time, ACK/NACK information hi (j) needs to be fed back according to the CRC check result this time, and the hi (j) is used in step 103 to determine whether the ACK/NACK information transmitted last time is correct.
103, the base station determines whether the transmission of the hi (i) is correct according to the receiving result of the PUSCH data at the time j and the hi (i), and according to the determining result and the hi (j), the base station determines that the transmission of the hi (i) is correct for the UE which is going to be transmitted to the UE the latest timemAnd the transmitted ACK/NACK information carries out power control.
Here, in this step, it is determined whether the last ACK/NACK information, i.e. hi (i), is correct or not, so as to determine how to identify to the UEmAnd adjusting the power gain factor adopted when the ACK/NACK information is sent, thereby realizing the dynamic configuration of the PHICH channel power.
Preferably, this step can be implemented by the following methods:
the method (one) comprises the following steps:
step 103X1, when the HI (i) is ACK, if the base station does not send PDCCH information for scheduling PUSCH at time j, and PUSCH (j) associated with PUSCH (i) at time j physical resource block PRB is not occupied by other UE scheduled by the base station, when the base station detects signals on the corresponding physical resource block of PUSCH (j), the UE is sent to the base stationmCurrent workThe rate gain factor is adjusted up according to a preset up-adjusting step length, and when no signal is detected on a physical resource block corresponding to the PUSCH (j), the UE is adjusted upmThe current power gain factor is adjusted downwards according to a preset down-regulation step length; the PUSCH (i) is transmitted at a time i, and the dB value of the down-regulation step length is the product of the target error rate of the preset ACK transmission and the dB value of the up-regulation step length;
when the HI (i) is NACK, if the transmission number of the transmission block corresponding to the PUSCH (i) does not reach the preset HARQ maximum transmission number and the base station does not send the PDCCH information related to the PUSCH (j), the current power gain factor of the UE m is adjusted downwards according to the down-regulation step size when the signal is detected on the physical resource block corresponding to the PUSCH (j), and the UE is adjusted downwards according to the down-regulation step size when the signal is not detected on the physical resource block corresponding to the PUSCH (j)mThe current power gain factor is adjusted up according to the up-regulation step length;
step 103X2, when the HI (j) is ACK, the UE is processedmCurrent power gain factor as the most recent time to be directed to the UEmPower gain factor g used when transmitting ACK/NACK information HI (j)m，an；
When the HI (j) is NACK, the UE is connectedmThe current power gain factor and the preset NACK gain adjustment coefficient DeltaNACK_ACK_linearAs the latest time to be sent to the UEmPower gain factor g used when transmitting ACK/NACK information HI (j)m，an。
In the method (one), when the ACK/NACK information is judged to be transmitted wrongly last time, the UE is informedmThe current power gain factor is adjusted up, otherwise, the UE is adjustedmThe current power gain factor is adjusted downward. In practical applications, the minimum effective unit of power adjustment is usually greater than or equal to 0.1dB, and when the down-regulation step length is smaller than the minimum effective unit, M down-regulation step lengths need to be accumulated to perform down-regulation on the power gain factor, specifically, the idea will be implemented by the following method (two)The specific implementation is illustrated:
the method (II) mainly comprises the following steps:
step 103Y1, when the HI (i) is ACK, if the base station does not send PDCCH information for scheduling PUSCH at time j, and PUSCH (j) associated with PUSCH (i) at time j physical resource block PRB is not occupied by other UE scheduled by the base station, when the base station detects signals on the corresponding physical resource block of PUSCH (j), the UE is sent to the base stationmThe current power gain factor is adjusted up according to a preset up step, when no signal is detected on the physical resource block corresponding to the PUSCH (j), the current down-regulation cumulative coefficient is added by one, and when the down-regulation cumulative coefficient is equal to the regulation threshold M, the UE is adjustedmThe current power gain factor is adjusted downwards according to a preset down-regulation step length, and the down-regulation accumulation coefficient is set to be 0; the PUSCH (i) is transmitted at a time i, and the dB value of the down-regulation step length is the product of the target error rate of the preset ACK transmission and the dB value of the up-regulation step length;
said Δstep_downIs the dB value of the down step, delta is the minimum effective unit of the preset power adjustment, deltastep_down＜δ。
When the HI (i) is NACK, if the transmission number of the transmission block corresponding to the PUSCH (i) does not reach the preset HARQ maximum transmission number and the base station does not send the PUSCH (j), adding one to the current down-regulation cumulative coefficient when a signal is detected on the physical resource block corresponding to the PUSCH (j), and adding the UE to the current down-regulation cumulative coefficient when the down-regulation cumulative coefficient is equal to the regulation threshold MmAdjusting the current power gain factor down according to the down-regulation step length, setting the down-regulation accumulation coefficient to be 0, and when no signal is detected on the physical resource block corresponding to the PUSCH (j), adjusting the UE to be in the down-regulation accumulation coefficient to be 0mThe current power gain factor is adjusted up according to the up step.
Preferably, when
When not an integer, the step 103Y1 further includes:
when the HI (i) is NACK, if the transmission number of the transmission block corresponding to the PUSCH (i) does not reach the preset HARQ maximum transmission number and the base station does not send the PDCCH information related to the PUSCH (j), when no signal is detected on the physical resource block corresponding to the PUSCH (j), the current ACK transmission error parameter N is transmittederr_ackPerform an add-on operation if
Then the UE is connected to the networkmCurrent power gain factor
After down-regulation is carried out according to the down-regulation step length, the power gain factor is down-regulated by delta dB to compensate the accumulated error in each up-regulation process, and the delta isstep_upIs the dB value of the step up. Preferably, the first and second liquid crystal films are made of a polymer,
rounding to simplify the operation.
Step 103Y2, when the HI (j) is ACK, the UE is processedmCurrent power gain factor as the most recent time to be directed to the UEmPower gain factor g used when transmitting ACK/NACK information HI (j)m，an；
When the HI (j) is NACK, the UE is connectedmThe current power gain factor and the preset NACK gain adjustment coefficient DeltaNACK_ACK_linearAs the power gain factor g employed when ACK/NACK information hi (j) was last to be sent to UEmm，an。
In methods (one) and (two), the UE used in adjusting the power gain factormThe current power gain factor is: used after last ACK/NACK information transmissionThe latest power gain factor. In practical applications, the power gain factor may be calculated again each time, which is described in detail by the method (iii) below. The method (III) comprises the following steps:
step 103Z0, the base station according to
Computing the UEmCurrent power gain factor gm，jWherein the SINRbaseIs according to UEmThe signal-to-noise ratio dB value and the SINR value which are obtained by calculating the channel quality information CQI fed back last time and are measured based on the CRS of the cell special reference signaltarget，ackIs a target signal-to-noise ratio dB value when ACK information is transmitted on a PHICH; pRSThe energy value EPRE of each resource element of the CRS is represented by dBm;
step 103Z1, when the HI (i) is ACK, if the base station does not send PDCCH information for scheduling PUSCH at time j and PUSCH (j) associated with PUSCH (i) at time j is not occupied by physical resource block PRB scheduled by the base station to other UE, when the base station detects signals on the corresponding physical resource block of PUSCH (j), the UE is sent to the base stationmCurrent power gain factor gm，jPerforming up-regulation according to a preset up-regulation step length, and when no signal is detected on a physical resource block corresponding to the PUSCH (j), performing up-regulation on the UEmCurrent power gain factor gm，jCarrying out down-regulation according to a preset down-regulation step length; the PUSCH (i) is transmitted at a time i, and the dB value of the down-regulation step length is the product of the target error rate of the preset ACK transmission and the dB value of the up-regulation step length;
when the HI (i) is NACK, if the transmission number of the transmission block corresponding to the PUSCH (i) does not reach the preset HARQ maximum transmission number and the base station does not send the PDCCH information of the PUSCH (j) associated scheduling, when a signal is detected on the physical resource block corresponding to the PUSCH (j), the UE is transmittedmCurrent power gain factor gm，jAccording to the down-regulation stepLong down-regulating, when no signal is detected on the physical resource block corresponding to the PUSCH (j), the UE is regulated to be in the down-regulating statemCurrent power gain factor gm，jAdjusting up according to the up-adjusting step length;
step 103Z2, when the HI (j) is ACK, the UE is processedmCurrent power gain factor gm，jAs the most recent time to be directed to the UEmPower gain factor g used when sending ACK/NACK informationm，an；
When the HI (j) is NACK, the UE is connectedmCurrent power gain factor gm，jAnd a predetermined NACK gain adjustment coefficient DeltaNACK_ACK_linearAs the latest time to be sent to the UEmPower gain factor g used when sending ACK/NACK informationm，an。
Preferably, the UE can be pre-configured according to the following three methodsmInitial value g of power gain factorm，iniSetting is carried out:
the method comprises the following steps: in advance according to
Determining the UEmInitial value g of power gain factorm，iniWherein the SINRbaseIs according to UEmThe signal-to-noise ratio dB value and the SINR value which are obtained by calculating the channel quality information CQI fed back last time and are measured based on the CRS of the cell special reference signaltarget，ackIs a target signal-to-noise ratio dB value when ACK information is transmitted on a PHICH; pRSThe energy value EPRE for each resource element of the CRS is given in dBm.
The second method comprises the following steps: in advance according toDetermining the UEmInitial value g of power gain factorm，iniWherein
is made ofThe maximum transmit power of the line port p,
the number of resource elements of the non-reference signal in the entire bandwidth of the cell,
cell-specific reference for the total bandwidth of a cell
Number of resource elements of signal, PRSEnergy Per Resource Element (EPRE) for CRS, in dBm.
The third method comprises the following steps: in advance according to
Determining the UEmInitial value g of power gain factorm，iniWherein the SINRrefA predetermined reference target signal-to-noise ratio dB value, SINR of the celltarget，ackIs a target signal-to-noise ratio dB value when ACK information is transmitted on the PHICH; pRSAn energy value for each resource element of the CRS.
Further, considering that if the ACK/NACK maximum power threshold is set in the system, the constraint of the threshold needs to be considered when performing power configuration, that is, after the step 103X2, the step 103Y2, and the step 103Z2, the following steps may be further included to meet the system requirement:
determining the g determined in step 103X2, step 103Y2, or step 103Z2m，anWhether or not greater than
PHI，HLIs a preset maximum power threshold of ACK/NACK, if yes, the maximum power threshold is the maximum power threshold of ACK/NACK
As the most recent time to be directed to the UEmPower gain factor g used when sending ACK/NACK informationm，an(ii) a Otherwise, judgeBreaking gm，anWhether or not less than
Is a preset ACK/NACK minimum power threshold, and if so, will be
As the most recent time to be directed to the UEmPower gain factor g used when sending ACK/NACK informationm，an。
Further, after obtaining the HI power gain factor of each UE, for a plurality of UEs with CDM located in the same PHICH level, the corresponding PHICH group power may be further calculated, and if the system has a power limitation on the PHICH, the step 103 may further include the following steps to meet the system requirements: for each PHICH group, according to the preset PHICH power pool size
And saidgm，anAnd configuring the PHICH transmitting power of each user equipment in the PHICH group. Wherein the configuration process specifically comprises the steps of:
step d1, obtaining the current power gain factor g of each user equipment in the PHICH groupm，anCorresponding power value g2 m，anAre accumulated to obtain
Step d2, if
Step d3 is performed, otherwise step d6 is performed, wherein, when a normal cyclic prefix is employed,
miaccording to TDDCalculating correction parameters by a PHICH group determined by the uplink and downlink subframe configuration,
for the number of PHICH groups calculated from the broadcast message, when an extended cyclic prefix is employed,
step d3 for the PHICH group
Has been equal to PHI，LLUser equipment of, label as
And calculates all current PHICH groups in the PHICH group
Sum to obtain
Step d4 for the PHICH group
Is not equal to PHI，LLUser equipment according to <math>
<mrow>
<msubsup>
<mi>g</mi>
<mrow>
<mi>m</mi>
<mo>,</mo>
<mi>an</mi>
</mrow>
<mn>2</mn>
</msubsup>
<mo>=</mo>
<msubsup>
<mi>g</mi>
<mrow>
<mi>m</mi>
<mo>,</mo>
<mi>an</mi>
</mrow>
<mn>2</mn>
</msubsup>
<mo>·</mo>
<mfrac>
<mrow>
<msubsup>
<mi>P</mi>
<mrow>
<mi>RE</mi>
<mo>,</mo>
<mi>max</mi>
</mrow>
<mrow>
<mo>(</mo>
<mi>p</mi>
<mo>)</mo>
</mrow>
</msubsup>
<mo>-</mo>
<munder>
<mi>Σ</mi>
<mrow>
<mi>intra</mi>
<mo>-</mo>
<mi>group</mi>
</mrow>
</munder>
<msubsup>
<mi>g</mi>
<mrow>
<mi>m</mi>
<mo>,</mo>
<mi>an</mi>
<mo>,</mo>
<mi>min</mi>
</mrow>
<mn>2</mn>
</msubsup>
</mrow>
<mrow>
<msubsup>
<mi>P</mi>
<mrow>
<mi>RE</mi>
<mo>,</mo>
<mi>group</mi>
</mrow>
<mrow>
<mo>(</mo>
<mi>p</mi>
<mo>)</mo>
</mrow>
</msubsup>
<mo>-</mo>
<munder>
<mi>Σ</mi>
<mrow>
<mi>intra</mi>
<mo>-</mo>
<mi>group</mi>
</mrow>
</munder>
<msubsup>
<mi>g</mi>
<mrow>
<mi>m</mi>
<mo>,</mo>
<mi>an</mi>
<mo>,</mo>
<mi>min</mi>
</mrow>
<mn>2</mn>
</msubsup>
</mrow>
</mfrac>
<mo>,</mo>
</mrow>
</math> To pair
Updating is carried out;
step d5, judging each updated
Whether or not less than PHI，LLIf there is
Less than PHI，LLThen it will be
Is configured as PHI，LLExecuting step d 1;
and d6, finishing the configuration.
In practical application, when the PHICH has no maximum power limitation, the power setting of the PHICH group is simple, and only the HI power in the same PHICH group needs to be accumulated, namely <math>
<mrow>
<msubsup>
<mi>P</mi>
<mrow>
<mi>RE</mi>
<mo>,</mo>
<mi>group</mi>
</mrow>
<mrow>
<mo>(</mo>
<mi>p</mi>
<mo>)</mo>
</mrow>
</msubsup>
<mo>=</mo>
<munder>
<mi>Σ</mi>
<mrow>
<mi>intra</mi>
<mo>-</mo>
<mi>group</mi>
</mrow>
</munder>
<msubsup>
<mi>g</mi>
<mrow>
<mi>m</mi>
<mo>,</mo>
<mi>an</mi>
</mrow>
<mn>2</mn>
</msubsup>
<mo>.</mo>
</mrow>
</math>
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A power configuration method for a physical hybrid retransmission indicator channel (PHICH) is characterized by comprising the following steps:
a. when at time i, the base station eNode B receives the user equipment UEmWhen the physical uplink shared channel PUSCH data of the hybrid automatic repeat request HARQ process n is received, determining corresponding ACK/NACK information HI (i) needing to be fed back according to a cyclic check code CRC check result obtained after decoding the PUSCH data, and sending the HI (i) to the UE through a physical hybrid repeat indication channel PHICHm；
b. When the base station needs to receive the PUSCH data of the HARQ process n again at the time j, if the PUSCH data is received, determining corresponding ACK/NACK information HI (j) needing to be fed back according to a cyclic check code CRC check result obtained after decoding the PUSCH data;
c. the base station judges whether the HI (i) is transmitted correctly according to the receiving result of the PUSCH data at the time j and the HI (i), and according to the judging result and the HI (j), the base station judges that the UE is about to transmit the PUSCH data to the UE most recentlymCarrying out power control on the sent ACK/NACK information; wherein the power control comprises:
when the HI (j) is ACK, the UE is transmittedmCurrent power gain factor as the most recent time to be directed to the UEmPower gain factor g used when transmitting ACK/NACK information HI (j)m,an；
When the HI (j) is NACK, the UE is connectedmThe current power gain factor and the preset NACK gain adjustment coefficient DeltaNACK_ACK_linearAs the latest time to be sent to the UEmPower gain factor g used when transmitting ACK/NACK information HI (j)m,an。
2. The method according to claim 1, wherein the hi (i) in step a is determined as:
HI (i) is ACK if the CRC check result is 0; otherwise, hi (i) ═ NACK.
3. The method of claim 1, wherein the UE in step cmThe current power gain factor determination method comprises the following steps:
when the HI (i) is ACK, if the base station does not send PDCCH information for scheduling PUSCH at time j, and PUSCH (j) physical resource block PRB associated with PUSCH (i) at time j is not occupied by other UE scheduled by the base station, then when the base station detects that the physical resource block PRB corresponding to PUSCH (j) is occupied by the base stationUpon signaling, the UEmThe current power gain factor is up-regulated according to a preset up-regulation step length, and when no signal is detected on a physical resource block corresponding to the PUSCH (j), the UE is subjected to up-regulationmThe current power gain factor is adjusted downwards according to a preset down-regulation step length; the PUSCH (i) is transmitted at a time i, and the dB value of the down-regulation step length is the product of the target error rate of the preset ACK transmission and the dB value of the up-regulation step length;
when the HI (i) is NACK, if the transmission number of the transmission block corresponding to the PUSCH (i) does not reach the preset HARQ maximum transmission number and the base station does not send the PDCCH information of the PUSCH (j) associated scheduling, when a signal is detected on the physical resource block corresponding to the PUSCH (j), the UE is transmittedmAdjusting the current power gain factor down according to the down-regulation step size, and when no signal is detected on the physical resource block corresponding to the PUSCH (j), adjusting the UE to the current power gain factormThe current power gain factor is adjusted up according to the up step.
4. The method of claim 1, wherein the UE in step cmThe current power gain factor determination method comprises the following steps:
when the HI (i) is ACK, if the base station does not send PDCCH information for scheduling PUSCH at time j, and PUSCH (j) physical resource block PRB associated with PUSCH (i) at time j is not occupied by other UE scheduled by the base station, when the base station detects signals on the corresponding physical resource block of PUSCH (j), the UE is sentmThe current power gain factor is adjusted up according to a preset up step, when no signal is detected on the physical resource block corresponding to the PUSCH (j), the current down-regulation cumulative coefficient is added by one, and when the down-regulation cumulative coefficient is equal to the regulation threshold M, the UE is adjustedmThe current power gain factor is adjusted downwards according to a preset down-regulation step length, and the down-regulation accumulation coefficient is set to be 0; wherein the PUSCH (i) is a PUSCH transmitted at time i,the dB value of the down step is the product of the preset target error rate of ACK transmission and the dB value of the up step;
said Δstep_downIs the dB value of the down step, delta is the minimum effective unit of the preset power adjustment, deltastep_down＜δ；
When the HI (i) is NACK, if the transmission number of the transmission block corresponding to the PUSCH (i) does not reach the preset HARQ maximum transmission number and the base station does not send the PUSCH (j), adding one to the current down-regulation cumulative coefficient when a signal is detected on the physical resource block corresponding to the PUSCH (j), and adding one to the UE when the down-regulation cumulative coefficient is equal to a regulation threshold MmAdjusting the current power gain factor down according to the down-regulation step length, setting the down-regulation accumulation coefficient to be 0, and when no signal is detected on the physical resource block corresponding to the PUSCH (j), adjusting the UE to be in the down-regulation accumulation coefficient to be 0mThe current power gain factor is adjusted up according to the up step.
5. The method of claim 4, wherein the step of removing the metal oxide is performed while the metal oxide is removed from the metal oxide
When not an integer, the method further comprises:
when the HI (i) is NACK, if the transmission number of the transmission block corresponding to the PUSCH (i) does not reach the preset HARQ maximum transmission number and the base station does not send the PDCCH information related to the PUSCH (j), when no signal is detected on the physical resource block corresponding to the PUSCH (j), the current ACK transmission error parameter N is transmittederr_ackPerform an add-on operation if
Then the UE is connected to the networkmThe current power gain factor is stepped up according to the down-regulation step sizeAfter the line is adjusted downwards, the power gain factor is adjusted downwards by delta dBstep_upIs the dB value of the step up.
6. The method of claim 1, wherein the UE in step cmThe current power gain factor determination method comprises the following steps:
the base station is as follows
Computing the UEmCurrent power gain factor gm,jWherein the SINRbaseIs according to UEmThe signal-to-noise ratio dB value and the SINR value which are obtained by calculating the channel quality information CQI fed back last time and are measured based on the CRS of the cell special reference signaltarget,ackIs a target signal-to-noise ratio dB value when ACK information is transmitted on a PHICH; pRSThe energy value EPRE of each resource element of the CRS is represented by dBm;
when the HI (i) is ACK, if the base station does not send PDCCH information for scheduling PUSCH at time j, and PUSCH (j) physical resource block PRB associated with PUSCH (i) at time j is not occupied by other UE scheduled by the base station, when the base station detects signals on the corresponding physical resource block of PUSCH (j), the UE is sent to the base stationmCurrent power gain factor gm,jPerforming up-regulation according to a preset up-regulation step length, and when no signal is detected on a physical resource block corresponding to the PUSCH (j), performing up-regulation on the UEmCurrent power gain factor gm,jCarrying out down-regulation according to a preset down-regulation step length; the PUSCH (i) is transmitted at a time i, and the dB value of the down-regulation step length is the product of the target error rate of the preset ACK transmission and the dB value of the up-regulation step length;
when the HI (i) is NACK, if the transmission number of the transmission block corresponding to the PUSCH (i) does not reach the preset HARQ maximum transmission number and the base station does not send the PDCCH information related to the PUSCH (j), then when the physical resource corresponding to the PUSCH (j) is NACKWhen a signal is detected on a block, the UE is connectedmCurrent power gain factor gm,jAdjusting down according to the down-regulation step length, and when no signal is detected on the physical resource block corresponding to the PUSCH (j), adjusting the UE downmCurrent power gain factor gm,jAnd (4) adjusting according to the up-adjustment step length.
7. The method according to any one of claims 3 to 6, further comprising, in advance, following the step of
Determining the UEmInitial value g of power gain factorm,iniWherein the SINRbaseIs according to UEmThe signal-to-noise ratio dB value and the SINR value which are obtained by calculating the channel quality information CQI fed back last time and are measured based on the CRS of the cell special reference signaltarget,ackIs a target signal-to-noise ratio dB value when ACK information is transmitted on a PHICH; pRSThe energy value EPRE for each resource element of the CRS is given in dBm.
8. The method according to any one of claims 3 to 6, further comprising, in advance, following the step of
Determining the UEmInitial value g of power gain factorm,ini(ii) a Wherein,
the unit is dBm which is the maximum transmitting power of an antenna port p;
the number of resource elements of the non-reference signal in the entire bandwidth of the cell,
number of resource elements, P, of cell-specific reference signals in the total bandwidth of a cellRSThe energy value EPRE for each resource element of the CRS is given in dBm.
9. The method according to any one of claims 3 to 6, further comprising, in advance, following the step of
Determining the UEmInitial value g of power gain factorm,iniWherein the SINRrefA predetermined reference target signal-to-noise ratio dB value, SINR of the celltarget,ackIs a target signal-to-noise ratio dB value when ACK information is transmitted on the PHICH; pRSAn energy value EPRE for each resource element of the CRS.
10. The method according to any one of claims 3 to 6, characterized in that the method further comprises:
c3, judging the gm,anWhether or not greater than
PHI,HLIs a preset maximum power threshold of ACK/NACK, if yes, the maximum power threshold is the maximum power threshold of ACK/NACK
As the most recent time to be directed to the UEmPower gain factor g used when sending ACK/NACK informationm,an(ii) a Otherwise, judging gm,anWhether or not less than
Is a preset ACK/NACK minimum power threshold, and if so, will be
As the most recent time to be directed to the UEmPower gain factor g used when sending ACK/NACK informationm,an。
11. The method of claim 8, wherein step c is further followed by:
for each PHICH group, according to the preset PHICH power pool sizeAnd said gm,anConfiguring PHICH transmitting power of each user equipment in the PHICH group; the configuration comprises:
d1, obtaining the current power gain factor g of each user equipment in the PHICH groupm,anCorresponding power value g2 m,anAre accumulated to obtain
d2, if
Step d3 is performed, otherwise step d6 is performed, wherein, when a normal cyclic prefix is employed,
mito calculate modification parameters for the PHICH group determined from the TDD uplink and downlink subframe configuration,
for the number of PHICH groups calculated from the broadcast message, when an extended cyclic prefix is employed, <math>
<mrow>
<msubsup>
<mi>P</mi>
<mrow>
<mi>RE</mi>
<mo>,</mo>
<mi>max</mi>
</mrow>
<mrow>
<mo>(</mo>
<mi>p</mi>
<mo>)</mo>
</mrow>
</msubsup>
<mo>=</mo>
<mfrac>
<msubsup>
<mi>P</mi>
<mrow>
<mi>PHICH</mi>
<mo>,</mo>
<mi>max</mi>
</mrow>
<mrow>
<mo>(</mo>
<mi>p</mi>
<mo>)</mo>
</mrow>
</msubsup>
<mrow>
<mn>6</mn>
<mo>·</mo>
<msub>
<mi>m</mi>
<mi>i</mi>
</msub>
<mo>·</mo>
<msubsup>
<mi>N</mi>
<mi>PHICH</mi>
<mi>group</mi>
</msubsup>
</mrow>
</mfrac>
<mo>;</mo>
</mrow>
</math>
d3 for the PHICH group
Has been equal to PHI,LLUser equipment of, label as
And calculates all current PHICH groups in the PHICH group
Sum to obtain
d4 for the PHICH group
Is not equal to PHI,LLUser equipment according to <math>
<mrow>
<msubsup>
<mi>g</mi>
<mrow>
<mi>m</mi>
<mo>,</mo>
<mi>an</mi>
</mrow>
<mn>2</mn>
</msubsup>
<mo>=</mo>
<msubsup>
<mi>g</mi>
<mrow>
<mi>m</mi>
<mo>,</mo>
<mi>an</mi>
</mrow>
<mn>2</mn>
</msubsup>
<mo>·</mo>
<mfrac>
<mrow>
<msubsup>
<mi>P</mi>
<mrow>
<mi>RE</mi>
<mo>,</mo>
<mi>max</mi>
</mrow>
<mrow>
<mo>(</mo>
<mi>p</mi>
<mo>)</mo>
</mrow>
</msubsup>
<mo>-</mo>
<munder>
<mi>Σ</mi>
<mrow>
<mi>intra</mi>
<mo>-</mo>
<mi>group</mi>
</mrow>
</munder>
<msubsup>
<mi>g</mi>
<mrow>
<mi>m</mi>
<mo>,</mo>
<mi>an</mi>
<mo>,</mo>
<mi>min</mi>
</mrow>
<mn>2</mn>
</msubsup>
</mrow>
<mrow>
<msubsup>
<mi>P</mi>
<mrow>
<mi>RE</mi>
<mo>,</mo>
<mi>group</mi>
</mrow>
<mrow>
<mo>(</mo>
<mi>p</mi>
<mo>)</mo>
</mrow>
</msubsup>
<mo>-</mo>
<munder>
<mi>Σ</mi>
<mrow>
<mi>intra</mi>
<mo>-</mo>
<mi>group</mi>
</mrow>
</munder>
<msubsup>
<mi>g</mi>
<mrow>
<mi>m</mi>
<mo>,</mo>
<mi>an</mi>
<mo>,</mo>
<mi>min</mi>
</mrow>
<mn>2</mn>
</msubsup>
</mrow>
</mfrac>
<mo>,</mo>
</mrow>
</math> To pairUpdating is carried out;
d5, determining each updated
Whether or not less than PHI,LLIf there is
Less than PHI,LLThen it will be
Is configured as PHI,LLExecuting step d 1;
d6, finishing the configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110350589.4A CN102412945B (en) | 2011-11-01 | 2011-11-01 | Power configuration method for physical harq indication channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110350589.4A CN102412945B (en) | 2011-11-01 | 2011-11-01 | Power configuration method for physical harq indication channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102412945A CN102412945A (en) | 2012-04-11 |
| CN102412945B true CN102412945B (en) | 2014-05-07 |
Family
ID=45914813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110350589.4A Expired - Fee Related CN102412945B (en) | 2011-11-01 | 2011-11-01 | Power configuration method for physical harq indication channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102412945B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10560228B2 (en) * | 2015-05-14 | 2020-02-11 | Cable Television Laboratories, Inc. | Hybrid automatic repeat request (HARQ) in listen before talk systems |
| CN106330410B (en) * | 2015-06-16 | 2019-12-13 | 中国移动通信集团公司 | method and device for processing uplink information |
| CN108604943A (en) | 2016-03-15 | 2018-09-28 | 富士通株式会社 | Feedback device, method and the communication system of confirmation message |
| CN108279663B (en) * | 2018-01-24 | 2019-12-20 | 广汽丰田汽车有限公司 | Control system and control method for vehicle error signal, and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572940A (en) * | 2009-05-27 | 2009-11-04 | 新邮通信设备有限公司 | Uplink synchronization or uplink power control method, base station and user equipment |
| CN102007810A (en) * | 2008-04-15 | 2011-04-06 | 高通股份有限公司 | Physical HARQ indicator channel (phich) resource assignment signaling in a wireless communication environment |
| CN102208967A (en) * | 2010-03-31 | 2011-10-05 | 中兴通讯股份有限公司 | Non-adaptive repeat power control method and device for long term evolution (LTE) terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8693352B2 (en) * | 2009-07-02 | 2014-04-08 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for ARQ control in wireless communications |
-
2011
- 2011-11-01 CN CN201110350589.4A patent/CN102412945B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102007810A (en) * | 2008-04-15 | 2011-04-06 | 高通股份有限公司 | Physical HARQ indicator channel (phich) resource assignment signaling in a wireless communication environment |
| CN101572940A (en) * | 2009-05-27 | 2009-11-04 | 新邮通信设备有限公司 | Uplink synchronization or uplink power control method, base station and user equipment |
| CN102208967A (en) * | 2010-03-31 | 2011-10-05 | 中兴通讯股份有限公司 | Non-adaptive repeat power control method and device for long term evolution (LTE) terminal |
Non-Patent Citations (2)
| Title |
|---|
| LTE上行链路自适应功率控制切换技术;邓勇志;《电信科学》;20100331(第3期);全文 * |
| 邓勇志.LTE上行链路自适应功率控制切换技术.《电信科学》.2010,(第3期),全文. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102412945A (en) | 2012-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11737117B2 (en) | Adjusting parameters of a transmission in response to interference | |
| CN105991235B (en) | Method for adjusting code modulation scheme, user equipment and base station | |
| EP2521405B1 (en) | Method and device for controlling non-adaptive retransmission power | |
| EP2830368B1 (en) | Uplink power control method, device and system | |
| CN102395187B (en) | Power configuration method for physical mixing retransmission indicating channel | |
| CN102143568B (en) | Power control method and base station | |
| CN102480775B (en) | Power control method and equipment of physical uplink control channel | |
| EP3624509B1 (en) | Methods and arrangements for power headroom reporting in a mobile telecommunications network | |
| JP5539410B2 (en) | Method and apparatus for power control in a wireless communication system | |
| EP2712107B1 (en) | Method and device for modifying channel quality indicator value | |
| EP2683205B1 (en) | Transmit power control information and power control method, system and device | |
| CN102378255B (en) | Method and device for improving transmission performance of physical downlink control channel (PDCCH) | |
| EP3861651B1 (en) | Link adaptation for 5g nr | |
| WO2012069001A1 (en) | Method and base station for adjusting downlink grant physical downlink control channel of ue | |
| JP5735178B2 (en) | Method and apparatus for determining physical downlink control channel resources | |
| CN102412945B (en) | Power configuration method for physical harq indication channel | |
| EP3654566B1 (en) | Method and apparatus for transmitting uplink control information | |
| CN106656411B (en) | method and system for scheduling MCS in HARQ (hybrid automatic repeat request) binding mode | |
| EP3531753B1 (en) | Uplink power control method and communication apparatus | |
| US8437704B2 (en) | System and method for resuming power control after interruption | |
| EP3437223A1 (en) | Handling different subframe sets for uplink 256qam | |
| CN104244393B (en) | A kind of method and apparatus for adjusting Physical Downlink Control Channel | |
| CN106301717B (en) | The method of adjustment and device of MCS in group service transmission | |
| CN110601798A (en) | Wireless network download rate improving method and device, electronic equipment and storage medium | |
| CN112839375A (en) | Method and device for sending uplink physical shared channel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170830 Address after: 100070, No. 188, building 25, No. eighteen, South Fourth Ring Road, Fengtai District, Beijing, 1, 101 Patentee after: Beijing Haiyun Technology Co.,Ltd. Address before: 510663, No. 3, color road, Science City, Guangzhou Development Zone, Guangdong Patentee before: NEW POSTCOM EQUIPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 |