WO2012130040A1 - 功率余量报告触发方法及装置 - Google Patents

功率余量报告触发方法及装置 Download PDF

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Publication number
WO2012130040A1
WO2012130040A1 PCT/CN2012/072280 CN2012072280W WO2012130040A1 WO 2012130040 A1 WO2012130040 A1 WO 2012130040A1 CN 2012072280 W CN2012072280 W CN 2012072280W WO 2012130040 A1 WO2012130040 A1 WO 2012130040A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
power
impact
power headroom
path loss
Prior art date
Application number
PCT/CN2012/072280
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English (en)
French (fr)
Inventor
刘扬
黄亚达
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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 WO2012130040A1 publication Critical patent/WO2012130040A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/30TPC using constraints in the total amount of available transmission power
    • H04W52/36TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365Power headroom reporting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for triggering a power headroom report.
  • wireless communication systems use electromagnetic waves to communicate with fixed or mobile wireless communication user equipment (e.g., wireless telephones or devices such as notebooks, computers with wireless communication cards, etc., may be referred to as user equipment).
  • a User Equipment UE
  • the wireless communication channel divides the electromagnetic wave frequency into a plurality of carrier frequencies, and one carrier frequency or a plurality of carrier frequencies may constitute a wireless service area.
  • the user equipment can communicate with other devices in the system (such as control network elements or other user equipments) through one or more carriers.
  • the control network element of the wireless communication system can control other devices according to the communication protocol/technology agreed upon by the system.
  • the control network element includes a control station and a network.
  • the control station includes, but is not limited to, a base station (BS), a relay station (RS), and a user equipment.
  • BS base station
  • RS relay station
  • the user equipment may be selected in the user equipment according to a predetermined rule. As a temporary control station.
  • Communication protocols/technologies include, but are not limited to, GSM (Global System for Mobile Communications), CDMA (Code Division Multiple Access), EDGE (Enhanced Data Rate for GSM Evolution), Enhanced Data Rate for GSM Evolution Technology), CDMA2000, TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), HSPA (High Speed Packet Access), WCDMA (Wideband Code Division Multiple Access) Multiple Access), EVDO (Evolution Data Only), HSOPA (High Speed OFDM Packet Access), WiMAX (World Interoperability for Microwave Access) LTE (Long Term Evolution) and LTE-A (LTE-Advanced, Long Term Evolution - Advanced).
  • a wireless communication system can provide wireless coverage over a geographic area by a base station using a designated wireless channel, which is referred to as a cell.
  • the base station should be located in the center of the cell.
  • the base station can be divided into a macro base station, a micro (Pico) base station, and a femto base station.
  • a base station is also referred to as an enhanced Node B (eNodeB), and a pico base station is also referred to as a Home Base Station or a Home Enhanced Node Node (HeNodeB).
  • eNodeB enhanced Node B
  • HeNodeB Home Enhanced Node Node
  • one or more relay stations can be placed between the user equipment and the base station.
  • a relay station is equivalent to a base station.
  • the user equipment may also constitute an ad hoc network (or cluster), and a user equipment in the ad hoc network serves as a temporary control station to assist the system in management and temporary control.
  • the station can accept the control of the original control station and manage the subordinate user equipment.
  • the main processes of LTE uplink power control are:
  • the UE receives a TPC (transmitting power control);
  • the UE (user equipment) performs downlink radio channel pilot reception power measurement, calculates path loss Pathloss, and the UE calculates transmission power P by parameters such as Pathloss, uplink shared channel bandwidth, transport block format, and TPC; if the user equipment triggers PHR (power headroom report), and meet the transmission conditions, then the UE also needs to send the PHR on the uplink shared channel.
  • PHR power headroom report
  • the eNodeB (evolved base station) sends a TPC to the UE through the physical downlink control channel of the DCI Format 0/3/3A; and returns to the execution step (1).
  • the UE adopts a dynamic resource allocation mode and adopts adaptive modulation and coding (AMC).
  • AMC adaptive modulation and coding
  • the uplink transmit power of the LTE UE is related to the resource allocation and coding and modulation modes. Therefore, the individual power control mode is adopted. It is not enough to complete the power control task of the LTE UE.
  • the PHR sent by the UE to the eNodeB is used as the resource budget information of the PUSCH, and provides a basis for the eNodeB to perform uplink resource allocation.
  • the eNodeB can allocate more radio resource blocks to the UE. If the PHR reflects that the UE has no power headroom, or does not have more power headroom, then the eNodeB can only Less radio resource blocks or low order modulation commands are allocated to the UE.
  • the PHR transmission frequency of the UE to the eNodeB is lower than the TPC transmission frequency of the eNodeB to the UE.
  • the sending of the PHR requires two steps: first, triggering, then reporting.
  • the UE triggers the PHR report when the periodic PHR timer expires or the path loss changes greatly or the PHR configuration/reconfiguration. After the UE obtains sufficient PUSCH resources for the PHR, the UE reports the PHR to the eNodeB.
  • PHR P CMAX -P ue tx
  • ⁇ 0 ⁇ is the configured maximum output power of the UE, PCMAX_L ⁇ PCMAX ⁇ PCMAX_H
  • PCMAX_L the configured maximum output power of the UE
  • PCMAX_H the configured maximum output power of the UE
  • the eNodeB controls the maximum transmit power of the UE to reduce the interference of the UE to the neighboring cell
  • the UE can design a responsible filter.
  • the UE reduces the maximum transmit power.
  • the former increases the cost of the UE, and the latter reduces the uplink capability of the UE.
  • the method of reducing the transmission power also called power reduce, PR
  • PR power reduce
  • a large number of UEs will adopt this method to achieve the requirement of out-of-band radiation.
  • the UE is not allowed to reduce the power unrestricted, so that the basic uplink service cannot be performed.
  • the protocol defines the allowed MPR (Maximum Power Reduction), due to the out-of-band radiation.
  • the size is related to the modulation and demodulation configuration of the transmitted data, and the occupied bandwidth. For example, in LTE, in protocol 36.101, different MPRs are set according to different transmission bandwidths and modem modes, as shown in Table 1 below: Set the actual PR value according to its own implementation, as long as PR ⁇ MPR is satisfied. Table 1
  • the UE subtracts the actual power backoff value based on the rated transmit power Ppowerclass, and also needs to consider the maximum transmit power allowed by the above network, taking the minimum of the two as the actual PCMAX.
  • the theoretical transmit power is uplinked for the UE.
  • ⁇ te P ue , P usch, P ue, pusch is the transmit power of the PUSCH in LTE,
  • the PHR is in dB and the power in the formula is in dBm.
  • the triggers reported by PHR mainly have the following three cases:
  • the PHR prohibit timer (prohibitPHR-Timer) times out, and the path loss is greater than the predetermined threshold dl-PathlossChange (in decibels dB) relative to the previous threshold of the PHR.
  • the PHR period timer (periodicPHR-Timer) times out;
  • Multi-carrier technology includes multiple methods, one of which is Carrier Aggregation (CA).
  • CA Carrier Aggregation
  • the so-called carrier aggregation means that multiple component carriers (CCs) can be aggregated to provide greater bandwidth transmission.
  • a user terminal can receive or transmit data on one or more component carriers simultaneously according to its own capabilities.
  • the first carrier is generally a primary carrier, and can carry signaling and data.
  • the second carrier is mainly configured to carry data, and can also carry part of signaling.
  • the carrier can be divided into an uplink carrier (for user equipment to control station data communication) and a downlink carrier (for control station to user equipment data communication).
  • the wireless service area corresponding to the first carrier is the first service area
  • the wireless service area corresponding to the second carrier is the second service area.
  • the concept and name of the first carrier, the first service area and the second carrier, and the second service area will have corresponding definitions.
  • RRC Radio Resource Control
  • a service area that provides NAI mobile information and security input is called a primary service area (Primary Cell, PCell for short), that is, a first service area, and according to the user.
  • the device capability configuration may be configured with one or more secondary service areas (Seondary Cell, referred to as SCell), that is, the second service area.
  • SCell Secondary Cell
  • the carrier corresponding to the primary service area is the first carrier, which includes a Downlink Primary Component Carrier (DL PCC) for controlling the data transmission from the station to the user equipment, and a number of user equipment to the control station.
  • DL PCC Downlink Primary Component Carrier
  • U PCC Uplink Primary Component Carrier
  • the carrier corresponding to the secondary service area is the second carrier, which includes a Downlink Secondary Component Carrier (DL SCC) for controlling the data transmission from the station to the user equipment, and is used for user equipment to control.
  • DL SCC Downlink Secondary Component Carrier
  • UL SCC Uplink Secondary Component Carrier
  • the source of the power adjustment may be a regional SAR (Specific Absorption Rate).
  • the SAR requirement scenario includes a power requirement that the user equipment needs to be down when the user is close to the human body or the transmitter needs to work before the dual transmitter works. Adjustment and so on. As the power consumption of the user equipment is changed, the PH changes. In this new situation, how the eNodeB and the user equipment evaluate the power headroom and how the user equipment performs the PHR report is urgently needed. problem. For the above problems, the current technology believes that a trigger condition should be set separately.
  • the PHR prohibit timer (prohibitPHR-Timer) times out, and the user equipment power management value is greater than the DL-PathlossChange when the previous PHR reported the change. It is necessary to trigger the PHR.
  • the problem with this is: Since MAX is affected by many factors at this time (the power variation of the user equipment is limited by the power variation of the P-MPR, the path loss PL), it is essential to understand that the eNodeB should be concerned with the amount of power change plus The upper PL changes, because the power variation and the overall change of PL really determine the power margin of E. If the power change amount change and the PL change are regarded as independent trigger conditions.
  • the present invention provides a method and apparatus for triggering a power headroom report to at least solve the problem of inaccurate power headroom reporting in the prior art described above.
  • a power headroom report triggering method including: after a power headroom reporting timer expires, a user equipment triggers a power headroom report of a user equipment according to a user equipment power management impact and a path loss impact
  • the power consumption of the user equipment affects the power variation caused by the power management of the user equipment; the path loss is the product of the variation of the path loss or the variation of the path loss and the path loss compensation factor.
  • the method further includes: filtering the impact of the power management of the user equipment.
  • Filtering the impact on the power management of the user equipment includes: Layer 3 filtering processing on the impact of the power management of the user equipment. Filtering the impact on the power management of the user equipment includes: obtaining the duration of the power management impact of the user equipment exceeding the threshold; determining that the duration exceeds the preset threshold. After triggering the user equipment power headroom report according to the impact of the user equipment power management and the path loss, the method further includes: restarting the power headroom reporting timer. The timeout period of the power headroom report timer is less than the timeout period of the power headroom report prohibition timer prohibitPHR-Timer. The power headroom reporting timer is a power headroom reporting prohibition timer prohibitPHR-Timer.
  • the user equipment power headroom report is triggered according to the impact of the user equipment power management and the path loss, and includes: determining whether the sum of the power management impact of the user equipment and the path loss is greater than the first threshold; if yes, triggering the power balance of the user equipment Volume report.
  • the first predetermined threshold is a downlink path loss change threshold.
  • the triggering of the power balance report of the user equipment according to the influence of the power management of the user equipment and the impact of the path loss includes: determining whether the impact of the power management of the user equipment is greater than a second predetermined threshold; if yes, triggering a power headroom report of the user equipment;
  • the second threshold is the difference between the threshold value of the downlink path loss and the influence of the path loss.
  • a power headroom report triggering apparatus including: a receiving module, configured to receive a power control command from a base station side; a power headroom reporting timer; a triggering module, configured to be in a power reserve After the timer expires, the user equipment reports the power headroom report based on the impact of the power management of the user equipment and the path loss.
  • the triggering device further includes: a filtering module configured to filter the impact of the power management of the user equipment.
  • the power headroom reporting timer is a power headroom reporting prohibition timer prohibitPHR-Timer.
  • the triggering module includes: a first determining submodule, configured to determine whether the sum of the power management impact of the user equipment and the path loss is greater than the first threshold; the first triggering submodule is set to affect the power management impact of the user equipment and the path loss When the sum is greater than the first threshold, the power headroom report of the user equipment is triggered.
  • the triggering module includes: a second determining sub-module, configured to determine whether the power management impact of the user equipment is greater than a second threshold; and the second triggering sub-module is configured to: when the power management impact of the user equipment is greater than the second threshold, Triggering the power headroom report of the user equipment; wherein, the second threshold is the difference between the threshold value of the downlink path loss change and the path loss effect.
  • the problem of inaccurate power headroom reporting in the prior art is solved by comprehensively considering the power management impact of the user equipment and the path loss impact when the user equipment power headroom report is triggered, so that the base station side can according to the reported power.
  • the balance makes the correct power adjustment, which in turn achieves the effect of saving power adjustment overhead.
  • FIG. 1 is a flowchart of a power headroom report triggering method according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of a power headroom report triggering method according to Embodiment 2 of the present invention
  • FIG. 3 is a flowchart according to the present invention.
  • 4 is a block diagram of a power headroom report triggering apparatus according to Embodiment 5 of the present invention
  • FIG. 5 Embodiment 5 of the present invention
  • FIG. 5 is a block diagram showing a structure of a power headroom report triggering apparatus according to Embodiment 6 of the present invention.
  • FIG. 6 is a structural block diagram of a power headroom report triggering apparatus according to Embodiment 7 of the present invention.
  • the method includes steps S102 to S104: Step S102, determining whether a power headroom report timer expires; S104: After the power headroom reporting timer expires, the user equipment triggers the reporting of the power headroom reported by the user equipment according to the impact of the power management of the user equipment and the path loss; wherein, the power management impact of the user equipment is the power variation value caused by the power management of the user equipment.
  • the path loss is the product of the variation of the path loss PL or the variation of the path loss PL and the path loss compensation factor.
  • the problem of inaccurate power headroom reporting in the prior art is solved by comprehensively considering the power management impact of the user equipment and the path loss impact when the user equipment power headroom report is triggered, so that the base station side can report according to the problem.
  • the power headroom makes the correct power adjustment, which in turn achieves the effect of saving power adjustment overhead.
  • the power headroom reporting timer in step S104 may be a timer in the prior art, such as a PHR prohibit timer (prohibitPHR-Timer), or may be a timer different from the prior art, and the timer is set.
  • the timeout period is less than or equal to the prohibitPHR-Timer timeout period.
  • step S104 filtering the instantaneous user equipment power management impact may be filtered to filter out frequently changing user equipment power impacts.
  • the predetermined threshold value in the step S104 may be a predetermined threshold value in the prior art, such as a downlink path loss change threshold value (for example, dl-PathlossChange) (in dB), or may be different from the prior art. Threshold.
  • dl-PathlossChange in dB
  • Threshold After the triggering of the user equipment power headroom report is completed, the power headroom reporting timer is restarted.
  • FIG. 2 is a flowchart of a power headroom report triggering method according to Embodiment 2 of the present invention. As shown in FIG.
  • the method includes steps S202 to S208: Step S202, starting a power headroom reporting timer. Step S204, determining whether the power headroom timer has timed out. Step S206: If the timer of the power headroom report expires, further determine whether the sum of the power management impact of the user equipment and the path loss is greater than a predetermined threshold. Step S208, if yes, triggering the user equipment power headroom report and restarting the power headroom report timer.
  • the power consumption impact of the user equipment may be the power variation caused by the power management of the user equipment, for example, the power backoff amount limited by the P-MPR.
  • the sum of the power consumption impact of the user equipment and the power loss affected by the path loss is the power variation caused by the power management of the user equipment (for example, the power backoff amount limited by the P-MPR) plus the path loss PL variation in the prior art. Or the path loss PL variation multiplied by the path loss compensation factor a.
  • User equipment power management impact occurs on at least one active service area.
  • the comparison with the predetermined threshold value should be compared with the absolute value of the sum of the changes.
  • the sum of the changes is equal to the sum of the power management impact of the user equipment and the path loss minus the last user equipment.
  • Last time refers to the time when the uplink resource was last sent to the PHR.
  • the power headroom report timer may be a prior art PHR prohibit timer (prohibitPHR-Timer) 0
  • the timer is different from the prior art timers, timer timeout Less than the PHR prohibit timer of the same period.
  • the predetermined threshold value may be a downlink path loss change threshold value (for example, dl-Path1 0SS Ch an ge) in the prior art.
  • a value different from a predetermined threshold value in the prior art is set as needed.
  • the third embodiment is basically the same as the second embodiment. The difference is that the filtering of the power variation is added before the triggering of the power headroom to filter out the frequently changing user equipment power impact. After the timer of the power headroom is timed out, and the sum of the user equipment power management impact and the path loss affecting power change amount is greater than the predetermined threshold, the user equipment power headroom report is triggered and the timer of the power headroom report is restarted.
  • the user equipment power management impact may be a power change value caused by the user equipment power management, such as a power change amount.
  • the sum of the user equipment power management influence and the path loss influence power change amount is the power change amount change amount plus the path loss PL change amount or the path loss PL change amount in the prior art multiplied by the path loss compensation factor a.
  • the method for determining the power management impact of the user equipment should be consistent with the method for defining the amount of change in the path loss, that is, the amount of change is defined as the value of the current value minus the last value, the influence of the power management of the user equipment and the power variation of the path loss.
  • the sum of the sum and the predetermined threshold value should be compared with the absolute value of the sum of the changes.
  • the timer of the power headroom report may be a PHR prohibit timer (prohibition PHR-Timer) in the prior art.
  • the timer is a timer different from the prior art, and the timeout period of the timer is less than the PHR prohibit timer of the same period.
  • the filtering method may be an existing technology, for example, an L3 filtering method, and the power variation value of the user equipment power management value at a sampling time of a certain period, for example, 20 ms.
  • P-MPR_L a*P-MPR_L_old+( 1 -a) *P-MPR_new , where a ⁇ l, P-MPR_new is the user equipment power management value at the new sampling instant, and P-MPR——L is the filtering User equipment power management value, P-MPR_L_old is the user equipment power management value before sampling.
  • TTT time to trigger
  • FIG. 3 is a flowchart of a method for triggering a power headroom report according to Embodiment 4 of the present invention. As shown in FIG. 3, the method includes steps S302 to S308: Step S302, starting a power headroom report timer. Step S304, determining whether the power headroom timer has timed out.
  • Step S306 if the timer of the power headroom report expires, further determining whether the power management impact of the user equipment is greater than a predetermined threshold. Step S308, if yes, triggering the user equipment power headroom report and restarting the power headroom report timer.
  • the user equipment power management impact may be a power change value caused by the user equipment power management, such as a power change amount.
  • the predetermined threshold value is variable.
  • the predetermined threshold value is unchanged, and the predetermined threshold value may be a threshold value different from the prior art, or may be the same threshold value as the prior art (for example, dl-PathlossChange ).
  • the impact of the instantaneous user equipment power management may be filtered to filter out the frequently changing user equipment power impact.
  • the filtering method may be an existing technology, such as an L3 filtering method, and the power management value of the user equipment is sampled at a certain period, such as every 20 ms.
  • P-MPR_L a*P-MPR_L_old+( 1 -a) *P-MPR_new , where a ⁇ l, P-MPR_new is the new sampling instant User equipment power management value, P-MPR——L is the filtered user equipment power management value, and P-MPR_L_old is the user equipment power management value before sampling. Or it is filtered by the method of time to trigger (TTT), that is, after adding a specified time period ⁇ to the original trigger mechanism, when the power change amount changes beyond a predetermined threshold, ⁇ starts to start. If the condition persists for one cycle, the user equipment performs a PHR.
  • TTTT time to trigger
  • FIG. 4 is a structural block diagram of a power headroom report triggering apparatus according to Embodiment 5 of the present invention. As shown in FIG.
  • the device includes: a receiving module 10, a power headroom reporting timer 20, and a triggering module 30.
  • the receiving module 10 is configured to receive a power control command from the base station side; the power headroom reporting timer 20 is coupled to the receiving module 10; the triggering module 30 is coupled with the power headroom reporting timer 20, and is set to be in the power remaining After the timer expires, the user equipment reports the power headroom report based on the impact of the power management of the user equipment and the path loss.
  • the problem of inaccurate power headroom reporting in the prior art is solved by comprehensively considering the power management impact of the user equipment and the path loss impact when the user equipment power headroom report is triggered, so that the base station side can report according to the problem.
  • the power headroom makes the correct power adjustment, which in turn achieves the effect of saving power adjustment overhead.
  • the apparatus in FIG. 4 may further include: a filtering module 40 coupled to the power headroom reporting timer 20 and the triggering module 30, configured to perform filtering processing on the power management impact of the user equipment.
  • the power headroom report timer 20 is a power headroom report prohibition timer prohibitPHR-Timer.
  • FIG. 5 is a structural block diagram of a power headroom report triggering apparatus according to Embodiment 6 of the present invention. As shown in FIG. 5, the triggering module 30 further includes: a first determining submodule 301 and a first triggering submodule 302, in addition to the functional modules in the fifth embodiment.
  • the first determining sub-module 301 is configured to determine whether the sum of the power management impact of the user equipment and the path loss is greater than the first threshold.
  • the first triggering submodule 302 is coupled to the first determining submodule 301 and configured to be When the sum of the power management impact of the user equipment and the path loss is greater than the first threshold, the power headroom report of the user equipment is triggered.
  • FIG. 6 is a structural block diagram of a power headroom report triggering apparatus according to Embodiment 7 of the present invention. As shown in FIG. 6, the triggering module 30 includes: a second determining computing sub-module 303 and a second triggering sub-module 304, in addition to the functional modules in the fifth embodiment.
  • the second determining sub-module 303 is configured to determine whether the power management impact of the user equipment is greater than a second threshold.
  • the second triggering sub-module 304 is coupled to the second determining sub-module 303, and is configured to trigger a power headroom report of the user equipment when the power management impact of the user equipment is greater than the second threshold. It is the difference between the threshold value of the downlink path loss and the influence of the path loss.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.

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Abstract

本发明提供了一种功率余量报告触发方法及装置,该方法包括:在功率余量报告定时器超时后,用户设备根据用户设备功率管理影响和路损影响触发用户设备的功率余量报告;其中,用户设备功率管理影响为用户设备功率管理造成的功率变化量;路损影响为路损的变化量或路损的变化量与路损补偿因子之积。在本发明中,通过在触发用户设备功率余量报告时综合考虑用户设备功率管理影响和路损影响,解决了现有技术中功率余量报告不准确的问题,使得基站侧能够根据上报的功率余量作出正确的功率调整,进而达到了节省功率调整开销的效果。

Description

功率余量报告触发方法及装置 技术领域 本发明涉及通信领域, 具体而言, 涉及一种功率余量报告触发方法及装置。 背景技术 目前, 无线通信系统使用电磁波与固定的或者移动的无线通信用户设备 (例如, 无线电话或附有无线通信卡的笔记本、 电脑等设备均可被称为用户设备) 进行通信。 一般来说, 在进行无线通信时, 用户设备 (User Equipment, 简称 UE) 位于系统的无 线覆盖范围之内, 并通过无线通信信道与系统进行通信。 具体的, 无线通信信道将电 磁波频率分成多个载波频率,一个载波频率或多个载波频率可以构成一个无线服务区。 用户设备可以通过一个或多个载波同系统中的其他设备 (例如控制网元或其他用户设 备) 联系。 无线通信系统的控制网元可以根据系统约定的通信协议 /技术控制其他设备。控制 网元包括控制站和网络。 控制站包括但不限于基站 (Base Station, 简称 BS)、 中继站 (Relay Station, 简称 RS) 和用户设备, 当用户设备用做控制站时, 该用户设备可以 是根据预定规则在用户设备中挑选的作为临时的控制站。通信协议 /技术包括但不限于 GSM (Global System for Mobile Communications, 全球移动通信系统)、 CDMA ( Code Division Multiple Access, 码分多址)、 EDGE (Enhanced Data Rate for GSM Evolution, 增强型数据速率 GSM演进技术)、 CDMA2000、TD-SCDMA(Time Division-Synchronous Code Division Multiple Access, 时分同步码分多址)、 HSPA (High Speed Packet Access, 高速分组接入)、 WCDMA (Wideband Code Division Multiple Access, 宽带码分多址)、 EVDO (Evolution Data Only,仅演进数据)、 HSOPA (High Speed OFDM Packet Access, 高速正交频分复用分组接入)、 WiMAX ( World Interoperability for Microwave Access, 微波存取全球互通)、 LTE (Long Term Evolution,长期演进)和 LTE- A (LTE- Advanced, 长期演进-高级)。 无线通信系统可以通过基站利用指定的无线信道在一定地理范围内提供无线覆 盖, 这个地理范围称为小区。 通常, 从理论上来说, 基站应该位于小区的中央。 按照 基站覆盖范围的大小,基站可以分成宏 (Macro)基站、微 (Pico)基站和微微 (Femto)基站。 在 LTE/LTE-A系统中, 基站也称为增强 B节点 (eNodeB), 微微基站也称为家庭基站 或者家庭增强 B节点 (Home eNodeB, 简称 HeNodeB)。 此外, 为了扩展覆盖或者扩展容量, 一个或多个中继站可以放置在用户设备和基 站之间。 对于用户设备来说, 中继站就相当于一个基站。 或者, 在用户设备数量极多 的网络中, 用户设备也可以自行组成 ad hoc网络 (或者称为 cluster) , 由 ad hoc网络 中的某个用户设备作为临时控制站, 协助系统进行管理, 临时控制站可以接受原有控 制站控制, 管理下属的用户设备。
LTE的上行功率控制的主要过程为:
( 1 ) UE接收到 TPC (transmitting power control, 功率控制命令);
( 2 ) UE (用户设备) 进行下行无线信道导频接收功率的测量, 计算路径损耗 Pathloss, UE以 Pathloss、 上行共享信道带宽、 传输块格式和 TPC等参数计算发射功 率 P; 如果用户设备触发了 PHR ( power headroom report, 功率余量报告), 并满足发 送条件, 那么 UE还需要在上行共享信道上发送 PHR。
( 3 ) eNodeB (演进型基站)收到物理上行共享信道和 /或 PHR后,通过 DCI Format 0/3/3A的物理下行控制信道向 UE发送 TPC; 返回执行步骤 ( 1 )。 系统中 UE 采用动态的资源分配方式, 并且采用自适应的信道编码调制方式 ( adaptive modulation and coding, 简称为 AMC), LTE UE上行发射功率与资源分配、 编码调制方式相关, 因此单独的功率控制方式还不足以完成 LTE UE的功率控制任务, 通过 UE向 eNodeB发送的 PHR作为 PUSCH的资源预算信息,为 eNodeB进行上行链 路资源分配提供依据。 如果 PHR反映出 UE有较大的功率余量, 那么 eNodeB可以分 配较多的无线资源块给 UE; 如果 PHR反映出 UE已经没有功率余量, 或者没有较多 的功率余量, 那么 eNodeB只能分配较少的无线资源块或者低阶调制命令给 UE。
LTE系统中 UE向 eNodeB的 PHR发送频率低于 eNodeB向 UE的 TPC发送频率。 PHR的发送需要有两个步骤: 首先是触发, 然后是上报。 UE在周期 PHR定时器到期 时或者路损变化较大或者 PHR配置 /重配置时触发 PHR上报, 当 UE获得了足够用于 PHR的 PUSCH资源后, UE向 eNodeB上报 PHR。 PHR的计算为 PH ( ) = PCMAX -Pue tx, ^0ΜΑΧ为 UE配置最大发射功率( configured maximum output power) , PCMAX_L≤PCMAX<PCMAX_H, PCMAX的取值范围主要 有 2种受限因素: 1 ) 受限于 eNodeB的控制, 比如在微基站的小覆盖场景, eNodeB 会控制 UE的最大发射功率, 以减少 UE对邻区的干扰; 2 ) UE的无用带外辐射 (Out of band emission) ,如为了满足 SEM ( Spectmm emission mask,频谱发射屏蔽)和 ACLR ( Adjacent Channel Leakage Ratio, 邻带泄露比)等要求, UE可以设计负责的滤波器, 用来减少带外辐射, 或者 UE降低最大发射功率, 前者会增加 UE的成本, 后者降低 了 UE的上行能力。 由于降低发射功率(也称为功率回退, power reduce, PR) 的方法 简单有效, 大量 UE在实现时会采用该方法来达到带外辐射的要求。不过为了保证 UE 的上行发送能力, 不允许 UE无限制的降低功率, 以至于不能进行基本的上行业务, 协议中定义允许的 MPR (Maximum Power Reduction, 最大功率回退值), 由于带外辐 射的大小跟发送数据的调制解调配置,以及占用的带宽都有关系,如 LTE在协议 36.101 中, 按不同的发送带宽和调制解调模式设置了不同的 MPR, 如下表 1所示: 各 UE可 以按自身的实现设置实际的 PR值, 只要满足 PR≤MPR即可。 表 1
Figure imgf000005_0001
所以考虑到功率回退后, UE在额定的发射功率 Ppowerclass的基础上减去实际的 功率回退值, 并且还需要考虑上述的网络允许的最大发射功率后, 取两者中的最小值 为实际的 PCMAX。 为 UE上行理论发射功率。在 LTE中, PHR中只考虑 PUSCH 的发射功率, 所以^ ^te = Pue,Pusch, Pue,pusch在 LTE中为 PUSCH的发射功率, 定义
,pusch = 101og10( PUSCH( )) + o PUSCH (t) + a(t) - PL + ^ (i) + f(i) , 其 中 的 PUSCH(i)为 PUSCH的发送带宽由调度的 MCS (Modulation and Coding Scheme, 调制 编码格式)配置决定、 PUSeH(0为开环功控调整值、 "(0为部分路损补偿值、 t为半 静态变量、 为路损、 ΔΤΡ(0为传输格式补偿值、 /( )为闭环功控调整值, 即 PUSCH 的发射功率跟 PUSCH的占用资源的带宽, UE和基站间的路损以及开环功控和闭环功 控 的 配 置 相 关 。 所 以 PHR 计 算 公 式 为 PH (i) = PCMAK -{ 101ο¾0( ρυ8εΗ( ))+ ο ρυ8εΗ( +ο ·^+Δ( + ( }。
PHR的以 dB为单位, 公式中功率以 dBm为单位。 在 LTE中, PHR上报的触发 (trigger) 主要有以下三种情况:
1) PHR禁止定时器(prohibitPHR-Timer)超时, 并且路损相对于上一次 PHR上报 的变化量大于预定门限值 dl-PathlossChange (单位是分贝 dB) 时; 2) PHR周期定时器 (periodicPHR-Timer) 超时;
3) PHR功能实体的配置或重配置; 当 PHR被触发后, 当 UE有上行调度资源可以容纳 PHR时, UE将 PHR发送给 e B o 随着通信系统和技术的发展, 为提高系统性能, 多载波通信系统开始出现。 多载 波技术包括多种方式, 其中之一就是载波聚合(Carrier Aggregation, 简称 CA)。例如, 在 LTE-A系统中, 所谓载波聚合, 就是多个分量载波 (Component Carrier, 简称 CC) 可以聚合在一起用来提供更大的带宽传输。 一个用户终端可以根据自己的能力同时在 一个或多个分量载波上接收或者发送数据。 在多载波系统中, 对于某一个用户来说, 可以有一个第一载波和一个或多个第二 载波。 第一载波一般为主要的载波, 可以承载信令和数据, 第二载波主要设置为承载 数据, 也可以承载部分信令。 载波可以分为上行载波 (用于用户设备到控制站数据通 信)和下行载波(用于控制站到用户设备数据通信)。对应第一载波的无线服务区为第 一服务区, 对应第二载波的无线服务区为第二服务区。 在不同的系统中, 第一载波, 第一服务区和第二载波, 第二服务区的概念和名称都会有相应的细节定义。 例如在 LTE-A 系统中, 配置了多载波的用户设备在网内只有一个无线资源管理 (Radio Resource Control, 简称为 RRC) 连接。 无线资源连接建立 /重新建立 /切换发生时候, 提供 NAI移动信息和安全输入的服务区 (Serving Cell) 被称为主要服务区 (Primary Cell, 简称为 PCell), 即第一服务区, 而根据用户设备能力配置可以配置一个或者多 个次要服务区 (Seondary Cell, 简称为 SCell), 即第二服务区。 进一步的, 主要服务 区对应的载波就是第一载波, 其中包括用于控制站到用户设备数据传输的下行主要分 量载波 (Downlink Primary Component Carrier, 简称为 DL PCC) 和用于用户设备到控 制站数通信的上行主要分量载波(Uplink Primary Component Carrier,简称为 UL PCC)。 类似的, 次要服务区对应的载波就是第二载波, 其中包括用于控制站到用户设备数据 传输的下行次要分量载波 (Downlink Secondary Component Carrier, 简称为 DL SCC) 和用于用户设备到控制站数通信的上行次要分量载波 (Uplink Secondary Component Carrier, 简称为 UL SCC)。 随着通信技术的发展, 由于用户设备功率管理造成的 ^MAX变化也需要考虑到
PHR 的计算中。 具体的, 这种功率调整的要求来源可以是区域吸收率要求 (regional SAR, Specific Absorption Rate). SAR requirement场景包括用户设备靠近人体时功率需 要下调或者双发射机工作时之前工作的发射机功率需要调整等。 由于用户设备功率管理造成 ^MAX变化, 相应的, 有可能造成 PH变化, 这种新 情况下, eNodeB和用户设备如何进行功率余量的评估,用户设备如何进行 PHR上报, 都是亟需解决的问题。 对于上述所存在的问题, 目前有技术认为, 应该单独设置一个触发条件, PHR禁 止定时器(prohibitPHR-Timer)超时, 并且用户设备功率管理值相对于上一次 PHR上 报的变化量大于 dl-PathlossChange 时就需要触发 PHR。 这样做的问题是: 由于 MAX此时受多个因素影响 (用户设备功率管理的受限于 P-MPR的功率变化量, 路损 PL), 从实质上理解 eNodeB应该关心的是功率变化量加 上 PL变化, 因为功率变化量和 PL的总体变化才真正决定 E的功率余量。如果将功率 变化量变化和 PL变化当做独立的触发条件。 变化趋势相反时, 如 PL变大时, 功率变 化量变小, 或者相反造成总体功率余量无需调整但是又要上报, 就造成 PHR的浪费。 如果变化趋势相同, 如 PL变小, 功率变化量变小, 但是总体效果还是功率余量需要 减小, 此时根据独立触发条件, 不会有 PHR的上报, eNodeB会做出错误的乐观估计, eNodeB认为的用户终端的上升空间将比实际的大, 后续可能造成调度上的资源浪费。 此外,对于 SAR场景中的功率变化量变化如果过于频繁,可能会造成相关的 PHR 上报太多, 由于 PHR的调整需要时间, 太频繁的 PHR不仅不能达到迅速功率调整的 目的, 而且会浪费用于功率调整的开销的资源。 发明内容 本发明提供了一种功率余量报告触发方法及装置, 以至少解决上述现有技术中的 功率余量报告不准确的问题。 根据本发明的一个方面, 提供了一种功率余量报告触发方法, 包括: 在功率余量 报告定时器超时后, 用户设备根据用户设备功率管理影响和路损影响触发用户设备的 功率余量报告; 其中,用户设备功率管理影响为用户设备功率管理造成的功率变化量; 路损影响为路损的变化量或路损的变化量与路损补偿因子之积。 根据用户设备功率管理影响和路损影响触发用户设备的功率余量报告之前, 还包 括: 对用户设备功率管理影响进行滤波处理。 对用户设备功率管理影响进行滤波处理包括: 对用户设备功率管理影响进行层三 滤波处理。 对用户设备功率管理影响进行滤波处理包括: 获取用户设备功率管理影响超出阈 值的持续时长; 确定持续时长超过预设门限。 根据用户设备功率管理影响和路损影响触发用户设备功率余量报告之后,还包括: 重新启动功率余量报告定时器。 功率余量报告定时器的超时时间小于功率余量报告禁止定时器 prohibitPHR-Timer 的超时时间。 功率余量报告定时器为功率余量报告禁止定时器 prohibitPHR-Timer。 根据用户设备功率管理影响和路损影响触发用户设备功率余量报告, 包括: 判断 用户设备功率管理影响和路损影响之和是否大于第一门限值; 如果是, 则触发用户设 备的功率余量报告。 第一预定门限值为下行路损变化门限值。 根据用户设备功率管理影响和路损影响触发用户设备功率余量报告, 包括: 判断 用户设备功率管理影响是否大于第二预定门限值; 如果是, 则触发用户设备的功率余 量报告; 其中, 第二门限值为下行路损变化门限值与路损影响之差。 根据本发明的另一方面, 提供了一种功率余量报告触发装置, 包括: 接收模块, 设置为接收来自基站侧的功率控制命令; 功率余量报告定时器; 触发模块, 设置为在 功率余量报告定时器超时后, 根据用户设备功率管理影响和路损影响触发用户设备上 报功率余量报告。 触发装置还包括: 滤波模块, 设置为对用户设备功率管理影响进行滤波处理。 功率余量报告定时器为功率余量报告禁止定时器 prohibitPHR-Timer。 触发模块包括: 第一判断子模块, 设置为判断用户设备功率管理影响和路损影响 之和是否大于第一门限值; 第一触发子模块, 设置为在用户设备功率管理影响和路损 影响之和大于第一门限值的情况下, 触发用户设备的功率余量报告。 触发模块包括: 第二判断子模块, 设置为判断用户设备功率管理影响是否大于第 二门限值; 第二触发子模块, 设置为在用户设备功率管理影响大于第二门限值的情况 下, 触发用户设备的功率余量报告; 其中, 第二门限值为下行路损变化门限值与路损 影响之差。 在本发明中, 通过在触发用户设备功率余量报告时综合考虑用户设备功率管理影 响和路损影响, 解决了现有技术中功率余量报告不准确的问题, 使得基站侧能够根据 上报的功率余量作出正确的功率调整, 进而达到了节省功率调整开销的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中: 图 1是根据本发明实施例一的功率余量报告触发方法流程图; 图 2是根据本发明实施例二的功率余量报告触发方法流程图; 图 3是根据本发明实施例四的功率余量报告触发方法流程图; 图 4是根据本发明实施例五的功率余量报告触发装置结构框图; 图 5是根据本发明实施例六的功率余量报告触发装置结构框图; 以及 图 6是根据本发明实施例七的功率余量报告触发装置结构框图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 实施例一 图 1是根据本发明实施例一的功率余量报告触发方法流程图, 如图 1所示, 包括 步骤 S102至步骤 S104: 步骤 S102, 判断功率余量报告定时器超时是否超时; 步骤 S104, 在功率余量报告定时器超时后, 用户设备根据用户设备功率管理影响 和路损影响触发用户设备上报功率余量报告; 其中, 用户设备功率管理影响为用户设 备功率管理造成的功率变化值;路损影响为路损 PL的变化量或路损 PL的变化量与路 损补偿因子之积。 在实施例一中, 通过在触发用户设备功率余量报告时综合考虑用户设备功率管理 影响和路损影响, 解决了现有技术中功率余量报告不准确的问题, 使得基站侧能够根 据上报的功率余量作出正确的功率调整, 进而达到了节省功率调整开销的效果。 其中,步骤 S 104中的功率余量报告定时器可以是现有技术中的定时器,例如 PHR 禁止定时器(prohibitPHR-Timer) , 也可以是和现有技术不同的定时器, 定时器设置的 超时时间小于等于 prohibitPHR-Timer超时时间。 其中, 在步骤 S 104中, 可以对瞬间的用户设备功率管理影响加上滤波, 过滤掉频 繁变化的用户设备功率影响。 其中,步骤 S 104中的预定门限值可以是现有技术中的预定门限值,例如下行路损 变化门限值(例如 dl-PathlossChange) (单位 dB ), 也可以是和现有技术不同的门限值。 其中, 触发用户设备功率余量报告完成后, 重新启动功率余量报告定时器。 实施例二 图 2是根据本发明实施例二的功率余量报告触发方法流程图, 如图 2所示, 包括 步骤 S202至步骤 S208 : 步骤 S202, 启动功率余量报告定时器。 步骤 S204, 判断功率余量定时器是否超时。 步骤 S206, 如果功率余量报告的定时器超时, 进一步判断用户设备功率管理影响 与路损影响之和是否大于预定门限值。 步骤 S208 , 如果是, 则触发用户设备功率余量报告并且重新启动功率余量报告定 时器。 其中, 用户设备功率管理影响可以是用户设备功率管理造成的功率变化量, 例如 受限于 P-MPR的功率回退量。 用户设备功率管理影响与路损影响功率变化量之和为用户设备功率管理造成的功 率变化量 (例如受限于 P-MPR的功率回退量) 加上现有技术中的路损 PL变化量或路 损 PL变化量乘以路损补偿因子 a。用户设备功率管理影响发生在至少一个激活的服务 区上。 用户设备功率管理影响与路损影响变化量定义的方法应该一致, 即都定义为变 化量 =用本次的数值减去上次的数值,用户设备功率管理影响与路损影响功率变化量之 和与预定门限值的比较应该用变化量之和的绝对值去比较, 等效的, 这个变化量之和 也等于本次用户设备功率管理影响与路损影响之和减去上次用户设备功率管理影响与 路损影响之和。 上次指的是上次获得上行资源发送 PHR的时刻。 其中, 功率余量报告的定时器可以是现有技术中的 PHR 禁止定时器 ( prohibitPHR-Timer) 0 在另一实施例中, 定时器是与现有技术不同的定时器, 定时器 的超时时间小于同时期的 PHR禁止定时器。 其中, 预定门限值可以是现有技术中的下行路损变化门限值 (例如 dl-Pathl0SSChange)。 在另一实施例中, 根据需要设定与现有技术中的预定门限值不同 的值。 实施例三 实施例三与实施例二的步骤基本相同, 区别在于在触发功率余量上报前增加了对 于功率变化量的滤波, 以过滤掉频繁变化的用户设备功率影响。 功率余量报告的定时器超时后, 并且用户设备功率管理影响与路损影响功率变化 量之和大于预定门限值时, 触发用户设备功率余量报告并且重新启动功率余量报告的 定时器。 其中, 用户设备功率管理影响可以是用户设备功率管理造成的功率变化值, 例如 功率变化量。 用户设备功率管理影响与路损影响功率变化量之和为功率变化量变化量 加上现有技术中的路损 PL变化量或路损 PL变化量乘以路损补偿因子 a。 所述用户设 备功率管理影响与路损影响变化量定义的方法应该一致,即都定义为变化量 =用本次的 数值减去上次的数值, 用户设备功率管理影响与路损影响功率变化量之和与预定门限 值的比较应该用变化量之和的绝对值去比较。 其中, 功率余量报告的定时器可以是现有技术中的 PHR 禁止定时器 ( prohibitPHR-Timer)。在本发明的另一实施例中,定时器是与现有技术不同的定时器, 定时器的超时时间小于同时期的 PHR禁止定时器。 其中, 滤波的方法可以是采用现有的技术, 例如 L3 滤波方式, 按一定周期采样 瞬间的用户设备功率管理值功率变化量, 如 20ms。 计算公式为: P-MPR_L=a*P-MPR_L_old+( 1 -a) *P-MPR_new , 其中 a<l, P-MPR_new为新采样瞬间 的用户设备功率管理值, P-MPR——L 为滤波后的用户设备功率管理值, P-MPR_L_old 为本次采样前用户设备功率管理值。 或者是用触发时刻(time to trigger, TTT )的方法 进行滤波, 即在原有的触发机制上再加一个指定的时段 TTT, 功率变化量变化超过预 定门限时, ΤΤΤ开始启动。 如果所述条件持续了一个 ΤΤΤ周期, 用户设备进行 PHR。 特别的对于功率变化量上升超过预定门限时, 可以不使用上述滤波。 其中, 预定门限值可以是现有技术中的下行路损变化门限值 (例如 dl-Pathl0SSChange)。 在本发明的另一实施例中, 设定与现有技术中的预定门限值不同 的值。 实施例四 图 3是根据本发明实施例四的功率余量报告触发方法流程图, 如图 3所示, 包括 步骤 S302至步骤 S308: 步骤 S302, 启动功率余量报告定时器。 步骤 S304, 判断功率余量定时器是否超时。 步骤 S306, 如果功率余量报告的定时器超时, 进一步判断用户设备功率管理影响 是否大于预定门限值。 步骤 S308, 如果是, 则触发用户设备功率余量报告并且重新启动功率余量报告定 时器。 其中, 用户设备功率管理影响可以是用户设备功率管理造成的功率变化值, 例如 功率变化量。 其中, 在本实施例中, 预定门限值是可变的, 当预定门限值可根据不同时刻变化 时,可以和现有技术中的门限值相关,例如,所述预定门限值=现有技术中的门限值(例 如 dl-PathlossChange)减去现有技术中的路损(PL)功率变化量或路损 PL变化量乘以 路损补偿因子 α。 此时变化量定义=用本次的数值减去上次的数值。 其中, 使用用户设 备功率管理造成的功率变化值的绝对值与预定门限值比较。在本发明的另一实施例中, 预定门限值不变, 预定门限值可以是和现有技术不同的门限值, 也可以是和现有技术 相同的门限值 (例如 dl-PathlossChange)。 其中, 在实施例四中, 可以对瞬间的用户设备功率管理影响加上滤波, 过滤掉频 繁变化的用户设备功率影响。 滤波的方法可以是采用现有的技术, 例如 L3滤波方式, 按一定周期采样瞬间的用户设备功率管理值, 如每 20ms。 计算公式为: P-MPR_L=a*P-MPR_L_old+( 1 -a) *P-MPR_new , 其中 a<l, P-MPR_new为新采样瞬间 的用户设备功率管理值, P-MPR——L 为滤波后的用户设备功率管理值, P-MPR_L_old 为本次采样前用户设备功率管理值。 或者是用触发时刻(time to trigger, TTT)的方法 进行滤波, 即在原有的触发机制上再加一个指定的时段 ΤΤΤ, 功率变化量变化超过预 定门限时, ΤΤΤ开始启动。 如果所述条件持续了一个 ΤΤΤ周期, 用户设备进行 PHR。 特别的对于功率变化量上升超过预定门限时, 可以不使用上述滤波。 在本发明的另一 实施例中, 无需对功率变化量进行滤波。 其中, 在本实施例中, 功率余量报告的定时器采用的是现有技术中的定时器, 例 如 PHR禁止定时器。 在本发明的另一实施例中, 定时器是与现有技术不同的定时器, 定时器的超时时间小于同时期的 PHR禁止定时器。 实施例五 图 4是根据本发明实施例五的功率余量报告触发装置结构框图。 如图 4所示, 该 装置包括: 接收模块 10、 功率余量报告定时器 20和触发模块 30。 其中, 接收模块 10, 设置为接收来自基站侧的功率控制命令; 功率余量报告定时 器 20, 与接收模块 10耦合; 触发模块 30, 与功率余量报告定时器 20耦合, 设置为在 功率余量报告定时器超时后, 根据用户设备功率管理影响和路损影响触发用户设备上 报功率余量报告。 在实施例五中, 通过在触发用户设备功率余量报告时综合考虑用户设备功率管理 影响和路损影响, 解决了现有技术中功率余量报告不准确的问题, 使得基站侧能够根 据上报的功率余量作出正确的功率调整, 进而达到了节省功率调整开销的效果。 其中, 图 4中的装置还可以包括: 滤波模块 40, 与功率余量报告定时器 20和触 发模块 30耦合, 设置为对用户设备功率管理影响进行滤波处理。功率余量报告定时器 20为功率余量报告禁止定时器 prohibitPHR-Timer。 实施例六 图 5是根据本发明实施例六的功率余量报告触发装置结构框图。 如图 5所示, 该 装置除包括实施例五中的各功能模块外, 触发模块 30 还包括: 第一判断子模块 301 和第一触发子模块 302。 其中, 第一判断子模块 301, 设置为判断用户设备功率管理影响和路损影响之和 是否大于第一门限值。 第一触发子模块 302, 与第一判断子模块 301耦合, 设置为在 用户设备功率管理影响和路损影响之和大于第一门限值的情况下, 触发用户设备的功 率余量报告。。 实施例七 图 6是根据本发明实施例七的功率余量报告触发装置结构框图。 如图 6所示, 该 装置除包括实施例五中的各功能模块外, 触发模块 30包括: 第二判断计算子模块 303 和第二触发子模块 304。 其中, 第二判断子模块 303, 设置为判断用户设备功率管理影响是否大于第二门 限值。 第二触发子模块 304, 与第二判断子模块 303耦合, 设置为在用户设备功率管 理影响大于第二门限值的情况下, 触发用户设备的功率余量报告; 其中, 第二门限值 为下行路损变化门限值与路损影响之差。 在本发明的上述实施例中, 为了满足用户设备功率管理带来的功率控制要求, 通 过在触发用户设备功率余量报告时综合考虑用户设备功率管理影响和路损影响, 解决 了现有技术中功率余量报告不准确的问题, 使得基站侧能够根据上报的功率余量作出 正确的功率调整, 进而达到了节省功率调整开销的效果。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而, 可以 将它们存储在存储装置中由计算装置来执行, 并且在某些情况下, 可以以不同于此处 的顺序执行所示出或描述的步骤, 或者将它们分别制作成各个集成电路模块, 或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明不限制于任 何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种功率余量报告触发方法, 包括:
在功率余量报告定时器超时后, 用户设备根据用户设备功率管理影响和路 损影响触发所述用户设备的功率余量报告;
其中, 所述用户设备功率管理影响为所述用户设备功率管理造成的功率变 化量; 所述路损影响为路损的变化量或路损的变化量与路损补偿因子之积。
2. 根据权利要求 1所述的方法, 其中, 根据用户设备功率管理影响和路损影响触 发所述用户设备的功率余量报告之前, 还包括:
对所述用户设备功率管理影响进行滤波处理。
3. 根据权利要求 2所述的方法, 其中, 对所述用户设备功率管理影响进行滤波处 理包括: 对所述用户设备功率管理影响进行层三滤波处理。
4. 根据权利要求 2所述的方法, 其中, 对用户设备功率管理影响进行滤波处理包 括:
获取所述用户设备功率管理影响超出阈值的持续时长;
确定所述持续时长超过预设门限。
5. 根据权利要求 1所述的方法, 其中, 根据用户设备功率管理影响和路损影响触 发用户设备功率余量报告之后, 还包括:
重新启动所述功率余量报告定时器。
6. 根据权利要求 1所述的方法, 其中, 所述功率余量报告定时器的超时时间小于 功率余量报告禁止定时器 prohibitPHR-Timer的超时时间。
7. 根据权利要求 1所述的方法, 其中, 所述功率余量报告定时器为功率余量报告 禁止定时器 prohibitPHR-Timer。
8. 根据权利要求 1至 7任一项所述的方法, 其中, 根据用户设备功率管理影响和 路损影响触发用户设备功率余量报告, 包括:
判断所述用户设备功率管理影响和所述路损影响之和是否大于第一预定门 限值; 如果是, 则触发所述用户设备的功率余量报告。
9. 根据权利要求 8所述的方法, 其中, 所述第一预定门限值为下行路损变化门限 值。
10. 根据权利要求 1至 7任一项所述的方法, 其中, 根据用户设备功率管理影响和 路损影响触发用户设备功率余量报告, 包括:
判断所述用户设备功率管理影响是否大于第二预定门限值; 如果是, 则触发所述用户设备的功率余量报告; 其中, 所述第二门限值为 下行路损变化门限值与路损影响之差。
11. 一种功率余量报告触发装置, 包括:
接收模块, 设置为接收来自基站侧的功率控制命令;
功率余量报告定时器;
触发模块, 设置为在所述功率余量报告定时器超时后, 根据用户设备功率 管理影响和路损影响触发用户设备上报功率余量报告。
12. 根据权利要求 11所述的装置, 其中, 还包括:
滤波模块, 设置为对用户设备功率管理影响进行滤波处理。
13. 根据权利要求 11所述的装置,其中,所述功率余量报告定时器为功率余量报告 禁止定时器 prohibitPHR-Timer。
14. 根据权利要求 11至 13任一项所述的装置, 其中, 所述触发模块包括:
第一判断子模块, 设置为判断所述用户设备功率管理影响和所述路损影响 之和是否大于第一预定门限值;
第一触发子模块, 在所述用户设备功率管理影响和所述路损影响之和大于 第一预定门限值的情况下, 触发所述用户设备的功率余量报告。
15. 根据权利要求 11至 13任一项所述的装置, 其中, 所述触发模块包括: 第二判断子模块, 设置为判断所述用户设备功率管理影响是否大于第二预 定门限值; 第二触发子模块, 设置为在所述用户设备功率管理影响大于第二预定门限 值的情况下, 触发所述用户设备的功率余量报告; 其中, 所述第二门限值为下 行路损变化门限值与路损影响之差。
PCT/CN2012/072280 2011-04-01 2012-03-13 功率余量报告触发方法及装置 WO2012130040A1 (zh)

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WO2015077937A1 (zh) * 2013-11-27 2015-06-04 华为技术有限公司 功率余量上报、接收方法及设备
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