WO2017162005A1 - Procédé et dispositif permettant de régler un paramètre de puissance, et support de stockage informatique - Google Patents

Procédé et dispositif permettant de régler un paramètre de puissance, et support de stockage informatique Download PDF

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Publication number
WO2017162005A1
WO2017162005A1 PCT/CN2017/075072 CN2017075072W WO2017162005A1 WO 2017162005 A1 WO2017162005 A1 WO 2017162005A1 CN 2017075072 W CN2017075072 W CN 2017075072W WO 2017162005 A1 WO2017162005 A1 WO 2017162005A1
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WIPO (PCT)
Prior art keywords
power
uplink subframe
terminal
offset
phr
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PCT/CN2017/075072
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English (en)
Chinese (zh)
Inventor
毕峰
赵亚军
邬华明
苟伟
彭佛才
李新彩
杨玲
Original Assignee
中兴通讯股份有限公司
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Priority claimed from CN201610402186.2A external-priority patent/CN107222921A/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017162005A1 publication Critical patent/WO2017162005A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present disclosure relates to the field of communications, and in particular to a power parameter adjustment method and apparatus, and a computer storage medium.
  • LTE-A Long Term Evolution
  • IMT-Advanced International Mobile Telecommunications Advanced
  • LTE-A Long Term Evolution
  • LTE-Advanced Long Term Evolution
  • the Carrier Aggregation (CA) technology further supports a wider communication bandwidth than Long Term Evolution (LTE).
  • the main principle of carrier aggregation is to support multiple LTE backward compatible carriers. 100MHz bandwidth.
  • a carrier that performs aggregation is called a component carrier (CC), which is also called a cell.
  • CC component carrier
  • PCC/PCell Primary Component Carrier/Cell
  • SCC/SCell Secondary Component Carrier/Cell
  • PA power amplifier
  • the power control performed on a CC is controlled by a combination of Power Spectral Density (PSD) and open-loop and closed-loop.
  • PSD Power Spectral Density
  • the PSD is represented by a resource block (RB, Resource Block). Calculation, that is, within the assumed unit RB The power required when all resource elements (RE, Resource Element) are occupied. Then, when the service is specifically transmitted, the used power can be calculated according to the number of allocated RBs. More specifically, the final calculated power includes the number of allocated RBs, PSD, path loss complement, modulation and coding format of the transmitted data, cumulative or absolute power adjustment.
  • PUSCH physical uplink shared channel
  • the power of the Physical Uplink Control Channel (PUCCH)
  • PUCCH Physical Uplink Control Channel
  • P c (i) represents the calculated power of the i-th subframe on the carrier index c
  • P CMAX.c (i) represents the maximum allowed transmit power of the i-th subframe on the carrier index c
  • P channel.c (i) represents The actual calculated physical channel power
  • M c (i) represents the number of scheduled RBs of the i-th subframe on the carrier index c
  • j ⁇ 0, 1, 2 ⁇ of P Oc (j) respectively represent semi-persistent scheduling services
  • Dynamic scheduling service PSD corresponding to random access
  • PL c indicates path loss supplement on carrier index c
  • TF c (i) indicates modulation coding format of transmission data of i-th subframe on carrier index c
  • f c (i ) indicates the cumulative or absolute power adjustment amount of the i-th subframe on the carrier index c.
  • P Oc (j)+PL c as open-loop power control, considering TF c (i)+f c (i) as closed-loop power control and P Oc (j) as PSD ( The first PSD definition), or P Oc (j) + PL c + TF c (i) + f c (i) is considered to be PSD (second PSD definition).
  • the unlicensed spectrum has the characteristics that the unlicensed spectrum does not need to be purchased, the spectrum resource has zero cost, and has the characteristics of free/low cost; the individual and the enterprise can participate in the deployment, and the equipment of the equipment vendor can be deployed arbitrarily, and the access requirement is low. Low cost; 5GHz, 2.4GHz and other frequency bands in the unlicensed spectrum can be used, with features of large available bandwidth; unlicensed carriers have the characteristics of shared resources, that is, when multiple different systems are operating or the same system When different operators operate in it, they can consider some ways of sharing resources to improve spectrum utilization efficiency, and so on.
  • LAA Licensed Assisted Access
  • M2M machine to machine
  • V2V vehicle to vehicle
  • the Clear Channel Assessment (CCA) detection is first required, and the unlicensed carrier can be used only after the CCA successfully competes.
  • the successful competition is related to the specific detection threshold (Energy detection (ED) threshold)
  • the threshold is high, the probability of success is high, and the threshold is low, the probability of success is low.
  • the threshold requirement of -62 dBm is relatively easy to satisfy, and the threshold requirement of -72 dBm is If it is harsh, it will not be easy to compete.
  • the threshold is related to the specific power.
  • the threshold X Thresh_max is defined as follows:
  • T max (dBm) 10 ⁇ log10(3.16228 ⁇ 10 -8 (mW/MHz) ⁇ BWMHz(MHz))
  • the uplink unlicensed CA is different from the uplink authorized CA.
  • the premise that the uplink unlicensed component carrier (UL UCC) is transmitted is: the eNB schedules the UL UCC by using an uplink grant (UL grant). And the UE successfully competes for the UL UCC, which means that the UE does not know in advance whether this can actually be transmitted on the UL UCC.
  • the UL power is calculated based on P CMAX.c (i) and P channel.c (i). For P channel.c (i), it can be calculated in advance; for P CMAX.c (i), there is a problem here, that is, when the UE sets the specific P CMAX.c (i), it is divided into two as follows. Situation:
  • Case 2 It is assumed that the UE always sets P CMAX.c (i) according to the received UL grant regardless of whether the UE successfully competes for the UL UCC, for the case of pre-computed power limitation, but actually the UE There is no competition for the UL UCC, which has the disadvantage of low overall power efficiency.
  • the Power Headroom Report is defined as the difference between P CMAX.c (i) and P channel.c (i), and is the prediction method, that is, P CMAX.c is also present .
  • P CMAX.c Similar problems, referred to here as case 3, case 4.
  • Case 4 It is assumed that the UE always sets P CMAX.c (i) and calculates P channel.c (i) according to whether the UL grant is successfully subscribed to the UL UCC.
  • the PHR corresponding to the UL UCC is fed back to the real PHR (real PHR), but in reality it is the virtual PHR (virtual PHR), which will affect the next uplink scheduling.
  • the terminal side P c (i) has a close relationship with the CCA detection threshold threshold, and the CCA detection threshold threshold determines whether the terminal successfully competes with the UL UCC, so these are also parameters that the UL LAA needs to adjust, and for these parameters. It has not been well set up yet.
  • the embodiments of the present disclosure provide a power parameter adjustment method and apparatus, and a computer storage medium, to at least solve the problem that the power parameter adjustment in the unlicensed carrier in the related art is unreasonable.
  • a power parameter adjustment method including: performing a clean channel evaluation CCA process according to an offset of a power parameter with respect to a terminal and/or an uplink subframe corresponding to the power parameter. Determine the power parameter adjustment mode; adjust the power parameters according to the power adjustment mode.
  • the power parameter in the case where the offset is a time offset, is a set time of P CMAX.c (i) or a reporting time of PHR c (i);
  • the power parameter is P c (i) of the terminal or the detection threshold X Thresh_max of the terminal ; in the case where the offset is the power variable P Thresh.c (i) for the energy detection threshold rise and fall change
  • the power parameter is P c (i) or X Thresh_max of the terminal ; in the case where the offset is the energy detection threshold offset X Thresh_offset , the power parameter is X Thresh_max ; whether or not the uplink subframe corresponding to the power parameter is performed
  • the power parameter is the set time of P CMAX.c (i) or the reporting type of PHR c (i); where P c (i) is the carrier index
  • the power parameter adjustment manner includes one of the following: in the i-th uplink Performing CCA detection before a first predetermined time before a start boundary of the frame; setting P CMAX.c (i) in a first predetermined time; wherein, the first predetermined time is a time offset; and the i-th uplink subframe The CCA detection is not performed before the start boundary, and P CMAX.c is set in the second predetermined time in the first uplink subframe in the uplink subframe of one or more successfully contiguous uplink unlicensed component carriers UL UCC. (i) wherein, the second predetermined time is a start period of the first uplink subframe, a start boundary of the first uplink subframe plus a second predetermined time as a time period indicated by the end point, The second predetermined time is the time offset.
  • the time offset is at least the length of time allowed by the on/off time template OOTM
  • the OOTM is the observation period of the terminal from the transmit power off state to the transmit power on state or from the transmit power on state to the transmit power. The observation period of the off state.
  • the time offset is also used for operation of the OOTM and/or transmission of the occupancy signal.
  • the power parameter adjustment manner includes: triggering PHR c (i) at the terminal After the reporting, if the terminal does not compete with the uplink unlicensed component carrier UL UCC, the PHR c (i) is reported on the jth uplink subframe, where the jth uplink subframe is the relative i-th uplink
  • the subframe is delayed by the third predetermined time uplink subframe or the first available uplink subframe after the ith subframe; wherein the third predetermined time or the first available uplink subframe after the ith subframe
  • the time difference from the ith uplink subframe is a time offset, where j is an integer.
  • PHR c (j) in the PHR c (i) frame and the j-th uplink sub collides discard PHR c (i) in the j-th uplink subframe; or PHR c (i) and PHR c (j) are simultaneously reported on the jth uplink subframe, where PHR c (j) is a power margin report of the terminal of the jth uplink subframe on the carrier index c.
  • the parameter adjustment manner includes: simultaneously reporting the triggered on the i-th uplink subframe.
  • the power parameter adjustment manner is determined according to whether the uplink subframe corresponding to the power parameter performs a clean channel assessment CCA process at a set time of the power parameter P CMAX.c (i), including: performing CCA The ith uplink subframe of the process performs P CMAX.c (i) setting of the ith uplink subframe after receiving the uplink scheduling or uplink grant UL grant; and uplinks for successfully competing for the uplink unlicensed component carrier UL UCC
  • the P CMAX.c (i) setting of the i-th uplink subframe can be performed at any time except for the uplink subframe other than the i-th uplink subframe in which the CCA process is performed.
  • determining the power parameter adjustment manner according to whether the uplink subframe corresponding to the power parameter performs a clean channel assessment CCA process includes: performing a CCA process The i-th uplink subframe, the reporting type of PHR c (i) includes: real power margin report real PHR report, virtual power margin report virtual PHR report, real power margin report real PHR and virtual power margin report virtual PHR Simultaneous reporting; for the uplink subframes that successfully compete for the uplink unlicensed component carrier UL UCC, except for the ith uplink subframe of the CCA process, the reporting type of PHR c (i) includes: real power The margin report real PHR report, virtual power margin report virtual PHR reported.
  • the reporting type of the PHR c (i) includes the real power margin report real PHR and the virtual power margin report virtual PHR are simultaneously reported
  • the network side receives the PUCCH and/or the PUSCH Indicates that the real PHR is valid; when the PUCCH and/or PUSCH are not received on the network side, it indicates that the virtual PHR is valid.
  • the method further includes: adjusting X Thresh_max according to P c (i) of the adjusted terminal .
  • P Thresh.c (i) is equal to P CMAX.c (i) when the energy detection threshold is not used for lifting on the network side.
  • the method before adjusting X Thresh_max , the method further includes: determining whether the terminal side needs to perform an energy detection threshold rise and fall change; and if necessary, adjusting X Thresh_max .
  • determining whether the terminal needs to perform an energy detection threshold rise and fall according to at least one of the following: a competition success probability of the terminal, an uplink data error block rate of the terminal, a signal to interference noise ratio of the terminal, and a buffer of the terminal.
  • the status report, the load level of the current carrier measured by the terminal, the received signal strength measured by the terminal indicate the measured amount of the LAA RSSI, the ratio of the number of UL grants sent by the network side autonomous statistics, and the number of actual lines sent by the terminal.
  • a power parameter adjustment apparatus including: a determining module, configured to perform, according to an offset of a power parameter with respect to a terminal, and/or an uplink subframe corresponding to the power parameter
  • the clean channel evaluates the CCA process to determine the power parameter adjustment mode; the adjustment module is configured to adjust the power parameter according to the power adjustment mode.
  • the power parameter in the case where the offset is a time offset, is a set time of P CMAX.c (i) or a reporting time of PHR c (i);
  • the power parameter is P c (i) of the terminal or the detection threshold X Thresh_max of the terminal ; in the case where the offset is the power variable P Thresh.c (i) for the energy detection threshold rise and fall change
  • the power parameter is P c (i) or X Thresh_max of the terminal ; in the case where the offset is the energy detection threshold offset X Thresh_offset , the power parameter is X Thresh_max ; whether or not the uplink subframe corresponding to the power parameter is performed
  • the power parameter is the set time of P CMAX.c (i) or the reporting type of PHR c (i); where P c (i) is the carrier index
  • a computer storage medium storing a computer program configured to perform the power parameter adjustment method described above.
  • the power parameter adjustment mode is determined according to whether the offset of the power parameter relative to the terminal and/or the uplink subframe corresponding to the power parameter performs a clean channel assessment CCA process;
  • the method adjusts the power parameter, that is, adjusts the power parameter according to whether the offset and/or the uplink subframe performs a clean channel evaluation CCA process, thereby adjusting the power parameter well, thereby solving the unlicensed carrier in the related art.
  • the power parameter adjustment is unreasonable.
  • FIG. 1 is a flow chart of a power parameter adjustment method in accordance with an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of CCA advance detection according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of CCA not being detected in advance according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a calculation reference of P CMAX.c according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a PHR delay according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of multi-type PHR feedback provided according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of multi-subframe PHR feedback according to an embodiment of the present disclosure.
  • FIG. 8 is a structural block diagram of a power parameter adjustment apparatus according to an embodiment of the present disclosure.
  • FIG. 1 is a flowchart of a power parameter adjustment method according to an embodiment of the present disclosure. As shown in FIG. 1 , the flow includes the following steps:
  • Step S102 Determine a power parameter adjustment manner according to whether an offset of a power parameter of the terminal and/or an uplink subframe corresponding to the power parameter performs a clean channel assessment CCA process.
  • Step S104 adjusting the power parameter according to the power adjustment mode.
  • the offset and/or the power according to the power parameter relative to the terminal is adopted.
  • the uplink subframe corresponding to the parameter performs a clean channel estimation CCA process to determine a power parameter adjustment mode; and the power parameter is adjusted according to the power adjustment mode, that is, by adjusting whether the uplink subframe is a clean channel evaluation CCA process according to the offset and/or the uplink subframe
  • the above power parameters can further adjust the power parameters, thereby solving the problem that the power parameter adjustment in the unlicensed carrier in the related art is unreasonable.
  • the above method can be applied not only to the power parameter adjustment in the unlicensed carrier but also to the power parameter adjustment in the authorized carrier, and is not limited thereto.
  • the power parameter is the set time of P CMAX.c (i) or the reporting time of PHR c (i), and the corresponding power parameter adjustment
  • the method may include one of the following: mode 1, performing CCA detection before a first predetermined time before a start boundary of the i th uplink subframe; setting P CMAX.c (i) in the first predetermined time; wherein, A predetermined time is a time offset; mode 2: no CCA detection is performed before the start boundary of the i-th uplink subframe, in one or more uplink subframes of the uplink unlicensed component carrier UL UCC that successfully competes P CMAX.c (i) is set for a second predetermined time in the first uplink subframe, wherein the second predetermined time is starting from the start boundary of the first uplink subframe, and the first uplink subframe The initial boundary is added to the second predetermined time as the time period indicated by the end point, and the second predetermined time
  • the UE can only set P CMAX.c (i) after successfully competing to the UL UCC, and the UE according to P CMAX.c (i) And P channel.c (i) for uplink power control, OOTM is a problem that cannot be realized instantaneously for the UE, which is beneficial to the realization of the product.
  • the time offset is at least the length of time allowed by the on/off time template OOTM
  • the OOTM is the observation period of the terminal from the transmit power off state to the transmit power on state or from the transmit power on state to the transmit power off state.
  • the observation period; the above time offset can also be used for OOTM operation and/or transmission of occupancy signals.
  • the power parameter is a reporting time of PHR c (i)
  • the power parameter adjustment manner includes: triggering PHR c (i) at the terminal.
  • the PHR c (i) is reported on the jth uplink subframe, where the jth uplink subframe is the relative i th
  • the uplink subframe is delayed by the third predetermined time uplink subframe or the first available uplink subframe after the ith subframe; wherein, the third predetermined time or the first available uplink subframe after the ith subframe
  • the time difference between the frame and the ith uplink subframe is a time offset, where j is an integer.
  • PHR c (i) collides with PHR c (j) of the jth uplink subframe
  • PHR c (i) is discarded on the jth uplink subframe
  • PHR c (i) and PHR c (j) are simultaneously reported on the uplink subframe
  • PHR c (j) is a power margin report of the terminal of the jth uplink subframe on the carrier index c.
  • the power adjustment mode avoids the situation that the PHR is often discarded, which is beneficial to the network side to perform better resource scheduling.
  • the parameter adjustment manner includes: simultaneously reporting the triggered on the i-th uplink subframe.
  • PHR c (i) can also reported PHR c (in) and PHR c (i) in the i-th uplink sub-frame, i.e., the current
  • the subframe (the ith subframe) simultaneously reports the PHR of the current subframe and the PHR of the subframe that is triggered before the current subframe.
  • the current subframe is the 8th subframe
  • the previously triggered subframe of the current subframe is In the second, fifth, and seventh subframes
  • the PHRs of the second, fifth, seventh, and eighth subframes can be simultaneously reported on the eighth subframe, and are not limited thereto.
  • the power parameter adjustment manner may be included according to whether the uplink subframe corresponding to the power parameter performs a clean channel assessment CCA process at a set time of the power parameter P CMAX.c (i).
  • Performing the ith uplink subframe of the CCA process after receiving the uplink scheduling or uplink grant UL grant, performing P CMAX.c (i) setting of the ith uplink subframe; successfully competing for the uplink unlicensed component carrier UL UCC
  • the P CMAX.c (i) setting of the i-th uplink subframe can be performed at any time in the uplink subframe except for the ith uplink subframe in the CCA process.
  • the time for setting P CMAX.c (i) is determined according to whether the uplink subframe performs the CCA process. Further, for example, the UE always sets P CMAX.c (i) according to the received uplink grant UL grant regardless of whether the UE successfully competes with the UL UCC. For the pre-computed power limit power limitation, the UE actually There is no competition for the UL UCC, and the overall power efficiency is low.
  • determining the power parameter adjustment manner according to whether the uplink subframe corresponding to the power parameter performs a clean channel assessment CCA process may include: performing CCA
  • the i-th uplink subframe of the procedure the reporting type of PHR c (i) may include: real power margin report real PHR reporting, virtual power margin report virtual PHR reporting, real power margin reporting real PHR and virtual power margin Reporting that the virtual PHR is reported at the same time; for the uplink subframes that successfully compete for the uplink unlicensed component carrier UL UCC, the reporting type of the PHR c (i) may be other than the ith uplink subframe of the CCA process.
  • the reporting type of the PHR c (i) includes the real power margin report real PHR and the virtual power margin report virtual PHR are simultaneously reported
  • the network side receives the PUCCH and/or the PUSCH
  • the PUCCH and/or the PUSCH are not received on the network side, it indicates that the virtual PHR is valid. That is, whether the real PHR or the virtual PHR is valid can be determined according to whether the PUCCH and/or the PUSCH are received.
  • the power parameter adjustment mode Can include:
  • P c (i) min(P Thresh.c (i), P CMAX.c (i), P channel.c (i)); where min() A function indicating the minimum value, P channel.c (i) is the actually calculated physical channel power of the terminal of the i-th uplink subframe on the carrier index c, and P Thresh.c (i) is the defined P Thresh.c (i).
  • P Thresh.c (i) is adjusted for P c (i)
  • the adjustment range is large, and a faster adjustment effect can be obtained.
  • the method further includes: adjusting X Thresh_max according to P c (i) of the adjusted terminal .
  • P Thresh.c (i) is equal to P CMAX.c (i) when the energy detection threshold is not used for lifting on the network side.
  • the method further includes: determining whether the energy detection threshold rise and fall is required on the terminal side; and adjusting X Thresh_max if necessary .
  • the terminal may determine whether the terminal needs to perform the energy detection threshold rise and fall according to at least one of the following: a competition success probability of the terminal, an uplink data error block rate of the terminal, a signal and interference noise ratio of the terminal, a buffer status report of the terminal, and a terminal.
  • the calculated load level of the current carrier, the received signal strength measured by the terminal indicate the measured amount of the LAA RSSI, the ratio of the number of UL grants sent by the network side autonomous statistics, and the number of actual lines sent by the terminal.
  • the foregoing method may be applied to a terminal side device, and may also be applied to a network side device, such as a base station, but is not limited thereto.
  • the ON/OFF time mask of the transmitting or receiving device in the LTE/LTE-A system is defined as the observation period from the transmit power OFF state to the transmit power ON state, and the observation of the transmit power ON state to the transmit power OFF state.
  • a unified OUTM ON/OFF time mask
  • CCA is equivalent to LBT (Listen Before Talk).
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG. 2 is a schematic diagram of CCA advance detection according to an embodiment of the present disclosure.
  • P CMAX.c (i) is determined, and the UE performs CCA detection in advance with respect to a subframe boundary, and the time advances.
  • the amount M is at least the length of time allowed by the OOTM, which can be used for OOTM operations, which can be used for the P CMAX.c (i) setting, which can be used to transmit the occupancy signal.
  • the above solution avoids, for example, the UE performing CCA detection, that is, the UE only sets P CMAX.c (i) after successfully competing to the UL UCC, and the UE according to P CMAX.c (i) and P channel.c (i)
  • OOTM is not instantaneous for the UE.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • FIG. 3 is a schematic diagram of CCA not detecting in advance according to an embodiment of the present disclosure.
  • P CMAX.c (i) is determined, and the UE does not perform CCA detection in advance with respect to a subframe boundary.
  • the duration M of the first portion of the first subframe in the one or more successful subscriptions to the uplink subframe is at least the duration allowed by the OOTM, the front portion duration M being used for OOTM operation, and the front portion duration M being transmittable Occupy signal.
  • the above solution avoids, for example, the UE performing CCA detection, that is, the UE only sets P CMAX.c (i) after successfully competing to the UL UCC, and the UE according to P CMAX.c (i) and P channel.c (i)
  • OOTM is not instantaneous for the UE.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • P CMAX.c (i) is determined, and for an uplink subframe U1 in which a CCA process is performed.
  • the UE After receiving the uplink scheduling or the UL grant, the UE performs P CMAX.c (i) setting of the uplink subframe, where the downlink subframe carrying the UL grant is D; it is assumed that the UE successfully competes with U1 and U2 at time U1.
  • U3 the UE performs the P CMAX.c (i) setting of the uplink subframe at any time in the uplink sub-frames U2 and U3 that are determined by the UE in addition to the U1 that performs the CCA process.
  • the above solution solves, for example, the UE always sets P CMAX.c (i) according to the received UL grant regardless of whether the UE successfully competes for the UL UCC. For the pre-calculated power limitation, the UE does not actually Competing with the UL UCC, the overall power efficiency is low.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • FIG. 5 is a schematic diagram of a PHR delay according to an embodiment of the present disclosure.
  • the PHR report is determined by defining a time offset, and the UE performs the PHR report after the uplink subframe U1 of the CCA process is triggered. If the UE is not successfully contending for the UL UCC, the UE performs PHR reporting on the uplink subframe with a delay of N ms, or delays the PHR report to the first available uplink subframe. The delayed PHR is discarded if the delayed PHR is delayed with the PHR of the uplink subframe delayed by N ms, or the delayed PHR collides with the PHR delayed to the first available uplink subframe.
  • the above solution avoids the situation of frequent drop PHR, which is beneficial to better resource scheduling on the network side.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • FIG. 6 is a schematic diagram of multi-type PHR feedback according to an embodiment of the present disclosure, as shown in FIG. 5 Ci, indicates the SCell index, P indicates whether there is power backoff, V indicates real PHR or virtual PHR, R is a reserved bit, A indicates whether real PHR and virtual PHR are transmitted at the same time, and PH indicates a specific power margin.
  • V when V is "0", the value indicates real PHR, and V is "1" value indicates virtual PHR; when A is "0", it indicates that real PHR and virtual PHR are not transmitted at the same time, the corresponding type at the dotted position, The bit field of the Cell does not exist or the bit in the corresponding position is used as a reservation.
  • A is a value of "1”
  • the bit field corresponding to the Type and Cell at the dotted line position represents the virtual PHR except for the R bit.
  • V is "1" value and A is "1” value
  • the bit field corresponding to the Type and Cell at the dotted line position represents the virtual PHR except for the R bit.
  • V is "1" value and A is "1” value
  • the dotted line The bit field corresponding to the Type and Cell in the position represents the real PHR except for the R bit.
  • the network side determines whether the real PHR is valid or the virtual PHR is valid according to whether the PUCCH and/or the PUSCH is received.
  • the network determines that the real PHR is valid.
  • the PUCCH and/or PUSCH are not received, it is determined that the virtual PHR is valid.
  • the present embodiment may also be implemented in an implicit manner, that is, the network side determines whether the PHR is valid or invalid by using an implicit indication. More specifically, for example, the network side detects whether the UE sends uplink data in the measurement calculation subframe. If the detection sends the uplink data, the PHR is considered valid, otherwise it is considered invalid.
  • the above solution avoids that the UE always sets P cmax.c and calculates P channel.c according to the received UL grant regardless of whether the UE successfully competes for the UL UCC.
  • the disadvantage is that the PHR calculation is not accurate enough, especially the PHR feedback corresponding to the uncompetitive UL UCC is Real PHR, but in fact it is virtual PHR, will affect the next UL scheduling problem.
  • Ci represents SCell index
  • P indicates whether there is power backoff
  • V indicates real PHR or virtual PHR
  • R is a reserved bit.
  • A indicates whether real PHR and virtual PHR are transmitted at the same time
  • PH indicates a specific power margin.
  • B when B is a "0" value, it means that the PHR triggered by the current subframe and the PHR triggered by the previous subframe are not simultaneously transmitted, and the bit field corresponding to the Type and Cell at the dotted position does not exist or the corresponding position is The bit is used as a hold.
  • B is a value of "1"
  • the bit field of the corresponding Type and Cell at the dotted line position exists.
  • the PHRs in which the previous subframes are triggered are in descending order, for example, the current subframe is n, and the previously triggered subframes have n-5 and n-8, respectively, and the feedback order is sequentially PHR and n-5 subframes of the n subframes.
  • the above solution avoids that the UE always sets P cmax.c and calculates P channel.c according to the received UL grant regardless of whether the UE successfully competes for the UL UCC.
  • the disadvantage is that the PHR calculation is not accurate enough, so that the PHR that is triggered by the current subframe is transmitted at the same time.
  • the network side can clearly judge the power margin and the path loss of the UE side.
  • P c (i) min(P CMAX.c (i), P channel.c (i)+P offset1.c (i)), and then adjust the X of the UE indirectly according to the P c (i) of the UE. Thresh_max .
  • X Thresh_max is adjusted according to the following formula, where P TX corresponds to P c (i).
  • P c (i) min(P CMAX.c (i), P channel.c (i)+P offset2.c (i)), and then adjust the X of the UE indirectly according to the P c (i) of the UE. Thresh_max .
  • X Thresh_max is adjusted according to the following formula, where P TX corresponds to P c (i).
  • P c (i) min(P Thresh.c (i), P CMAX.c (i), P channel.c (i)), and then adjust the X of the UE indirectly according to the P c (i) of the UE. Thresh_max .
  • X Thresh_max is adjusted according to the following formula, where P TX corresponds to P c (i).
  • the X Thresh_max of the UE is adjusted by defining an energy detection threshold offset, and the X Thresh_max of the UE is directly adjusted according to the defined energy detection threshold offset X Thresh_offset ;
  • X Thresh_max X Thresh_max + X Thresh_offset .
  • Rate (equivalent to the correct rate, equivalent to NACK number/total block number, equivalent to ACK number/total block number, equivalent to NACK number/ACK number, equivalent to ACK number/NACK number), signal to interference and noise ratio of the terminal
  • the buffer status report of the terminal the terminal statistics of the load level of the current carrier, the LAA RSSI measurement quantity measured by the terminal, the ratio of the number of UL grants sent by the network side autonomic statistics, and the actual number of lines sent by the terminal to determine whether the terminal side needs energy.
  • the threshold rise and fall is detected.
  • the UE feeds back the competition success probability to the network side, and the network side determines that the UE has a low probability of competing success, and needs to increase the X Thresh_max to improve the UE's competition success probability.
  • the network side may according to the embodiment six, seven, eight, and nine. To achieve the adjustment of X Thresh_max .
  • a power parameter adjustment device is further provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again.
  • the term “module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 8 is a structural block diagram of a power parameter adjustment apparatus according to an embodiment of the present disclosure. As shown in FIG. 8, the apparatus includes
  • the determining module 80 is configured to determine a power parameter adjustment manner according to whether an offset of the power parameter relative to the terminal and/or an uplink subframe corresponding to the power parameter performs a clean channel assessment CCA process;
  • the adjustment module 82 is connected to the determination module 80 and configured to adjust the power parameter according to the power adjustment mode.
  • the power parameter adjustment mode is determined by using the foregoing apparatus, according to whether the offset of the power parameter relative to the terminal and/or the uplink subframe corresponding to the power parameter is a clean channel assessment CCA process; and adjusting the power parameter according to the power parameter adjustment manner That is, the power parameter is adjusted according to whether the offset and/or the uplink subframe performs a clean channel evaluation CCA process, so that the power parameter can be well adjusted, thereby solving the power parameter adjustment in the unlicensed carrier in the related art. Reasonable question.
  • the power parameter is the set time of P CMAX.c (i) or the reporting time of PHR c (i); the offset is the power offset In the case where the power parameter is P c (i) of the terminal or the detection threshold X Thresh_max of the terminal ; in the case where the offset is the power variable P Thresh.c (i) for the energy detection threshold rise and fall, the power parameter P c (i) or X Thresh_max of the terminal ; in the case where the offset is the energy detection threshold offset X Thresh_offset , the power parameter is X Thresh_max ; whether the clean channel is evaluated according to the uplink subframe corresponding to the power parameter In the case of the CCA process to determine the power parameter adjustment mode, the power parameter is the set time of P CMAX.c (i) or the reporting type of PHR c (i); where P c (i) is the ith of the carrier index
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • Embodiments of the present disclosure also provide a computer storage medium.
  • the above computer storage medium may be configured to store program code for performing the following steps:
  • the power parameter is adjusted according to the power adjustment mode.
  • the foregoing storage medium may include, but is not limited to, a U disk, a ROM, a RAM, a mobile hard disk, a magnetic disk, or an optical disk, and the like, which can store program codes.
  • the technical solution of the embodiment of the present disclosure determines whether the power parameter adjustment mode is determined according to whether the offset of the power parameter relative to the terminal and/or the uplink subframe corresponding to the power parameter performs a clean channel assessment CCA process; To adjust the power parameter, that is, to adjust the power parameter according to whether the offset and/or the uplink subframe performs a clean channel evaluation CCA process, and then the power parameter can be well adjusted, thereby solving the problem in the unlicensed carrier in the related art. Unreasonable adjustment of power parameters.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant de régler un paramètre de puissance, et un support de stockage informatique. Le procédé consiste : à déterminer un procédé de réglage de paramètre de puissance selon une quantité de décalage par rapport à un paramètre de puissance d'un terminal et/ou si une sous-trame de liaison montante correspondant au paramètre de puissance réalise un processus d'évaluation de canal libre (CCA); et à régler le paramètre de puissance selon le procédé de réglage de puissance.
PCT/CN2017/075072 2016-03-22 2017-02-27 Procédé et dispositif permettant de régler un paramètre de puissance, et support de stockage informatique WO2017162005A1 (fr)

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CN201610402186.2A CN107222921A (zh) 2016-03-22 2016-06-07 功率参数调整方法及装置

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