WO2012116643A1 - 功率余量上报和调度子帧的方法、系统及设备 - Google Patents
功率余量上报和调度子帧的方法、系统及设备 Download PDFInfo
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- WO2012116643A1 WO2012116643A1 PCT/CN2012/071803 CN2012071803W WO2012116643A1 WO 2012116643 A1 WO2012116643 A1 WO 2012116643A1 CN 2012071803 W CN2012071803 W CN 2012071803W WO 2012116643 A1 WO2012116643 A1 WO 2012116643A1
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- transmit power
- current time
- maximum transmit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
- H04W52/36—Transmission power control [TPC] 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
- H04W52/365—Power headroom reporting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
- H04W52/36—Transmission power control [TPC] 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
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
- H04W72/231—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
Definitions
- the present invention relates to the field of wireless communication technologies, and in particular, to a method, system and device for power headroom and scheduling subframes. Background technique
- LTE Long Term Evolution
- CA Carrier Aggregation
- the carrier aggregation technology is that the terminal can work simultaneously on multiple cells.
- the cells may be continuous or discontinuous in the frequency domain, and the bandwidth of each cell may be the same or different.
- the maximum bandwidth limit per cell is 20 MHz. At present, it is generally considered that the maximum number of cells aggregated by one user terminal is five.
- the LTE-A system also classifies the cells aggregated by the user terminals as follows:
- PCell Primary Cell: Only one of the multiple cells aggregated by the terminal is defined as a PCell.
- the PCell is selected by the base station and configured to the terminal through RRC (Radio Resource Control) signaling.
- PUCCH Physical Layer Uplink Control Channel
- SCel (Secondary Cell): All cells except PCell in all cells aggregated by the terminal are SCelU
- the PHR Power Headroom Reporting
- the PH information on the activated cell is packaged and reported together.
- the uplink since the uplink only supports intra-band CA in the frequency band, all uplink carriers aggregated by one terminal must use the same TDD (Time Division Duplex) configuration.
- cell aggregation between different frequency bands is introduced, so that the LTE-A system aggregates the frequency band. It can be shared or adjacent to other systems (such as LTE systems).
- the LTE-A terminal aggregates three cells: Cell Cell2 and Cell3. Cell 1 and Cell 2 use the same Band 1, and Cell 3 uses Band 2.
- Band 1 and the 3G/LTE TDD Band A should use TDD UL/DL (Uplink/Downlink) configurations that can coexist, that is, configurations without UL DL cross-interference, for LTE.
- System refers to the same TDD UL/DL configuration.
- Band 2 should use a TDD UL/DL configuration that can coexist with 3 G/LTE TDD Band B. If the TDD UL/DL configuration used by Band A and Band B is different, then the TDD UL/DL configuration used by Band 1 and Band 2 is different.
- the terminal can report all the uplink subframes.
- the PH information on the configured and activated cell so that the base station obtains the PH information of the terminal as a whole.
- the subframe status of different cells may be different at the same time, as shown in Figure 1B below. It is assumed that the cell 1 and the cell 2 respectively adopt the TDD UL/DL configuration 0 and the configuration 1. For the time T1, if the PH is triggered on the cell 1, the current PH information is only reported for the configured and activated uplink subframe, then the T1 time The terminal only reports the PH information on the cell 1. The PH information does not reflect the power allocation of the terminal when the cell 1 and the cell 2 are both uplink subframes.
- the base station cannot use the ⁇ information obtained at time T1 to perform UL scheduling at times ⁇ 2, ⁇ 3, and ⁇ 4.
- the embodiment of the invention provides a method, a system and a device for the power headroom and the scheduling subframe, which are used to solve the problem that the ⁇ information existing in the prior art is only for the uplink subframe, and the terminal aggregation configuration.
- the existing PHR mechanism is not conducive to the problem of subsequent scheduling.
- the ⁇ information of the current time of each configured and activated cell is determined, where the cell includes a cell whose current time is a downlink subframe;
- a PH information determining module configured to determine PH information of a current time of each configured and activated cell when the PH information needs to be reported, where the cell includes a cell whose current time is a downlink subframe;
- a receiving module configured to receive PH information of a current time of each configured and activated cell reported by the terminal, where the cell includes a cell whose current time is a downlink subframe;
- the scheduling module is configured to schedule subsequent uplink subframes according to the received PH information.
- the terminal is configured to: when the PH information needs to be reported, determine the PH information of the current time of each configured and activated cell, and report the determined PH information, where the cell includes a cell whose current time is a downlink subframe;
- the network side device is configured to receive the PH information of the current time of each configured and activated cell reported by the terminal, and schedule the subsequent uplink subframe according to the received PH information.
- the PH information of the cell can be determined according to the virtual uplink PUCCH and/or the PUSCH transmission format, so that the PH information can be used to schedule the uplink on the subframe when the cell becomes the uplink subframe. transmission.
- the PH information of the terminal that is received by the base station is the PH information of the currently configured and activated cell at the current time, including the PH information of the cell in which the current time is the downlink subframe, thereby preventing the PH information from being incomplete, and subsequently
- the impact of scheduling is beneficial to subsequent scheduling and improves scheduling efficiency and system stability.
- FIG. 1A is a schematic diagram of different UL/DL configurations used by different bands of CA terminal aggregation in the LTE-A system
- FIG. 1B is a schematic diagram of multiple TDD UL/DL configurations
- FIG. 2 is a schematic structural diagram of a system for scheduling a subframe according to an embodiment of the present invention
- FIG. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of a network side device according to an embodiment of the present invention.
- FIG. 5 is a schematic flowchart of a method for reporting a power headroom according to an embodiment of the present invention
- FIG. 6 is a schematic flowchart of a method for scheduling a subframe according to an embodiment of the present invention.
- the terminal when the terminal needs to report the PH information, the terminal determines and reports the PH information of the current time of each configured and activated cell, where the cell includes a cell whose current time is a downlink subframe.
- the PH information of the downlink subframe can be determined, so that the PH information in multiple cells with different uplink and downlink configurations is incomplete.
- the embodiment of the present invention receives the PH information of the current time of each configured and activated cell reported by the terminal, and performs scheduling on the subsequent uplink subframe according to the received PH information, where the cell includes a cell whose current time is a downlink subframe.
- the PH information of the current time of each configured and activated cell reported by the received terminal includes the PH information of the cell in the downlink subframe at the current time, thereby avoiding the impact of the incomplete PH information and subsequent scheduling.
- the solution of the embodiment of the present invention may be applied to the LTE-A system, and may also be applied to other systems with the following conditions: At the same time, the subframe states of different cells aggregated by the terminal may be different.
- the system for scheduling a subframe in the embodiment of the present invention includes: a terminal 10 and a network side device 20.
- the terminal 10 is configured to: when the PH information needs to be reported, determine the PH information of the current time of each configured and activated cell, and report the determined PH information, where the cell includes a cell whose current time is a downlink subframe.
- the network side device 20 is configured to receive the PH information of the current time of each configured and activated cell reported by the terminal, and schedule the subsequent uplink subframe according to the received PH information.
- a configured and activated cell refers to a cell capable of data transmission between a base station and a terminal.
- the configured cell refers to a cell configured by the base station through RRC (Radio Resource Control) signaling.
- the configured cell is deactivated by default. That is, the cell cannot be used for data transmission between the base station and the terminal. It needs to be activated before it can be used.
- the PH information of the cell is calculated according to the real data transmission, otherwise, according to the virtual PUCCH format. And/or the virtual PUSCH transmission format calculates the cell PH information.
- Pcmax,c is the maximum configurable transmit power allowed on the cell
- Ppusch,c the power transmitted for the PUSCH on the cell
- Ppucch,c is the power transmitted by the PUCCH on the cell.
- Type 1 and Type2 PH information are as follows:
- PCell two types of PH information, typel and type2, are defined. If PUCCH and PUSCH are configured for parallel transmission, once the PH information is triggered, the typel and type2 PH information must be reported on the PCell; otherwise, only the typel PH information is reported. For SCell, only the typel PH information is defined because there is no PUCCH for its UL CC.
- the PH information of the cell is calculated by using a virtual PUCCH format and/or a virtual PUSCH format.
- Ppusch, c and Ppucch, c are calculated according to real data transmission, and for the case without real data transmission, according to virtual PUCCH format and/or virtual PUSCH transmission.
- the format calculates Ppusch,c and Ppucch,c.
- the virtual PUCCH format and/or the virtual PUSCH transport format may be the same as the virtual PUCCH format and/or PUSCH transport format defined in R10 or a new format may be defined by the physical layer.
- MPR Maximum Power Reduction
- A-MPR Additional Maximum Power Reduction
- ATc is 0 dB; otherwise, The actual PUSCH data transmission determines the value of these parameters.
- MPUSCH Physical meanings of MPUSCH, c(i), and Ks are specifically defined in RIO.
- the MPR, A-MPR, and ATc values are 0 dB; otherwise, the values of these parameters are determined according to the real PUCCH data transmission.
- the calculation of the PH information of the cell by the virtual PUCCH format and/or the virtual transmission format includes three cases: only by virtual PUCCH transmission format calculation, only by virtual PUSCH transmission format calculation, and by virtual PUCCH and PUSCH transmission format calculation.
- the cell is a primary cell and the PUCCH and the PUSCH are configured to transmit data in parallel,
- the typel PH information corresponding to the cell is calculated by using the virtual PUSCH transmission format
- the typel PH information corresponding to the cell is calculated by using a virtual PUSCH data format.
- the terminal 10 is on the top, all the determined PH information is placed in the PHR MAC CE (MAC Control Element), and the PHR MAC CE is sent through the uplink subframe.
- the value of the length of the L field in the MAC sub-header corresponding to the PHR MAC CE is determined by the current time and the area of the downlink subframe is activated.
- the embodiment of the present invention is not limited to the foregoing manner of transmitting PH information by using the PHR MAC CE, and other embodiments capable of transmitting PH information are applicable to the embodiments of the present invention.
- the terminal 10 determines the maximum transmit power of the configurable carrier of the cell. Specifically, if the cell is a primary cell, determining a configurable carrier maximum transmit power for calculating type1 PH information, and a configurable carrier maximum transmit power for calculating type 2 PH information;
- the configurable carrier maximum transmit power used to calculate the typel PH information is determined.
- the Pcmax, c calculation can also consider the impact of the power backoff caused by the real uplink data transmission of the terminal at that time.
- the terminal 10 determines the maximum transmit power of the configurable carrier of the cell after determining the maximum transmit power of the configurable carrier.
- the embodiment of the present invention is not limited to the foregoing manner of transmitting the maximum transmit power by the PHR MAC CE, and other embodiments capable of transmitting the maximum transmit power are applicable to the embodiments of the present invention.
- the order of the PH information of each cell in the PHR MAC CE is determined according to the cell number. For example, in ascending order.
- the PH information and the maximum transmit power are reported by the PHR MAC CE, the PH information of the same cell and the maximum transmit power can be bound to form the uplink information, and then the top 4 information of each cell is determined in the PHR MAC CE according to the cell number. order.
- the prohibit PHR-Timer (timeout timer) is timed out.
- the terminal has a resource for uplink new data transmission, and among the multiple activated cells aggregated by the terminal, the path loss of the at least one cell at the time of the last PH information reporting time exceeds the uplink.
- Loss change threshold ( dl-PathlossChange ) dB;
- embodiments of the present invention are not limited to the foregoing triggering manners, and other manners that can trigger the terminal to perform the upper layer are applicable to the embodiments of the present invention.
- the network side device 20 needs to receive PH information of the current time of each configured and activated cell reported by the terminal, where the cell includes a cell whose current time is a downlink subframe.
- the network side device 20 extracts the PH information from the PHR MAC CE.
- the network side device 20 extracts the maximum transmit power of the carrier that is allowed to be configured in each cell from the PHR MAC CE.
- the network side device in the embodiment of the present invention may be a base station (such as a macro base station, a home base station, etc.), or may be an RN (successor) device, or may be another network side device.
- a base station such as a macro base station, a home base station, etc.
- RN RN (successor) device
- the embodiment of the present invention further provides a terminal, a network side device, a method for reporting a power headroom, and a method for scheduling a subframe, and the system and method for solving the problem and the power headroom reporting system Similarly, the implementation of these devices and methods can be seen in the implementation of the system, and the details are not repeated here.
- the terminal in the embodiment of the present invention includes: a PH information determining module 100 and a reporting module 110.
- the PH information determining module 100 is configured to determine PH information of a current time of each configured and activated cell when the PH information needs to be reported, where the cell includes a cell whose current time is a downlink subframe.
- the reporting module 110 is configured to report the PH information determined by the PH information determining module 100, so that the network side device can schedule the subsequent uplink subframe according to the PH information.
- the PH information determining module 100 calculates the PH information of the cell by using the virtual PUCCH transmission format and/or the virtual PUSCH transmission format.
- the PH information determining module 100 calculates the type2 PH information corresponding to the cell by using the virtual PUCCH transmission format and the virtual PUSCH transmission format, and calculates the virtual PUSCH transmission format.
- the type1 PH information corresponding to the cell if the cell is the primary cell and the PUCCH and the PUSCH are not configured to transmit data in parallel, the PH information determining module 100 calculates the typel PH information corresponding to the cell by using the virtual PUSCH transmission format; if the cell is a secondary cell, PH
- the information determining module 100 calculates the typel PH information corresponding to the cell by using a virtual PUSCH transmission format.
- the PH information determining module 100 determines the maximum transmit power of the configurable carrier of the cell before determining the PH of the cell; correspondingly, the maximum transmit power of the configurable carrier determined by the upper module 110.
- the PH information determining module 100 determines a configurable carrier maximum transmit power for calculating the type 1 PH information, and a configurable carrier maximum transmit power for calculating the type 2 PH information;
- the cell is a secondary cell, and the PH information determining module 100 determines a configurable carrier maximum transmit power for calculating typel PH information.
- the reporting module 110 places all the determined PH information in the PHR MAC CE, and sends the PHR MAC CE through the uplink subframe.
- the reporting module 110 places the configurable carrier maximum transmit power in the PHR MAC CE and transmits the PHR MAC CE through the uplink subframe.
- the order of the reporting information of each cell in the PHR MAC CE is determined according to the cell number.
- the network side device of the embodiment of the present invention includes: a receiving module 200 and a scheduling module 210.
- the receiving module 200 is configured to receive PH information of a current time of each configured and activated cell reported by the terminal, where the cell includes a cell whose current time is a downlink subframe.
- the scheduling module 210 is configured to schedule subsequent uplink subframes according to the PH information received by the receiving module 200.
- the receiving module 200 extracts PH information from the PHR MAC CE.
- the receiving module 200 extracts, from the PHR MAC CE, the maximum transmit power of the carrier allowed to be configured in each cell.
- the method for reporting the power headroom in the embodiment of the present invention includes the following steps:
- Step 502 Report the determined PH information.
- each of the configured and activated cells may include a cell whose current time is a downlink subframe and a cell whose current time is an uplink subframe.
- the PH information of the cell is calculated according to the real data transmission. Otherwise, The cell PH information is calculated according to a virtual PUCCH transmission format and/or a virtual PUSCH transmission format.
- the PH information of the cell is calculated by using a virtual transmission PUCCH format and/or a virtual PUSCH transmission format.
- Ppusch,c and Ppucch,c are calculated according to real data transmission, and for the case without real transmission, according to the virtual PUCCH transmission format and/or virtual PUSCH transmission.
- the format calculates Ppusch,c and Ppucch,c.
- the virtual PUCCH transport format and/or the virtual PUSCH transport format may be the same as the virtual PUCCH format and/or PUSCH transport format defined in R10 or a new transport format may be defined by the physical layer.
- the calculation of the PH information of the cell by the virtual PUCCH transmission format and/or the virtual PUSCH transmission format includes three cases: calculation only by virtual PUCCH transmission format, calculation by virtual PUSCH transmission format only, and calculation by virtual PUCCH and virtual PUSCH transmission format.
- the type 2 PH information corresponding to the cell is calculated by using the virtual PUCCH transmission format and the virtual PUSCH transmission format, and the corresponding cell is calculated by using the virtual PUSCH transmission format.
- Typel PH information is calculated by using the virtual PUCCH transmission format and the virtual PUSCH transmission format, and the corresponding cell is calculated by using the virtual PUSCH transmission format.
- the type 1 PH information corresponding to the area is calculated by using the virtual PUSCH transmission format
- the typel PH information corresponding to the cell is calculated by using a virtual PUSCH transmission format.
- the PHR MAC CE is placed in the PHR MAC CE, and the PHR MAC CE is sent through the uplink subframe.
- the value of the length of the L field in the MAC sub-header corresponding to the PHR MAC CE needs to be considered, and the current time is the configuration of the downlink subframe and the activated cell.
- the embodiment of the present invention is not limited to the foregoing manner of transmitting PH information by the PHR MAC CE, and other methods capable of transmitting PH information are applicable to the embodiments of the present invention.
- the maximum transmit power of the configurable carrier of the cell may also be determined. Specifically, if the cell is a primary cell, determining a configurable carrier maximum transmit power for calculating type 1 PH information, and a configurable carrier maximum transmit power for calculating type 2 PH information;
- the configurable carrier maximum transmit power used to calculate the typel PH information is determined.
- the Pcmax, c calculation can also consider the impact of the power backoff caused by the real uplink transmission of the terminal at the moment.
- the maximum transmit power of the configurable carrier of the cell is reported.
- the configurable carrier maximum transmit power is placed in the PHR MAC CE, and the PHR MAC CE is sent through the uplink subframe.
- the embodiment of the present invention is not limited to the foregoing manner of transmitting a configurable carrier maximum transmit power by using a PHR MAC CE, and other embodiments capable of transmitting a configurable carrier maximum transmit power are applicable to the embodiments of the present invention.
- the order of the PH information of each cell in the PHR MAC CE is determined according to the cell number. For example, in ascending order.
- the maximum transmit power of the configurable carrier can be reported by the PHR MAC CE, and the order of the maximum transmit power of the configurable carrier in each cell in the PHR MAC CE can be determined according to the cell number.
- the PHR MAC CE is used to report the PH information and the configurable carrier maximum transmit power
- the PH information of the same cell and the configurable carrier maximum transmit power can be bound to form the uplink information, and then the upper 4 of each cell is determined according to the cell number. ⁇ The order of information in the PHR MAC CE.
- the method for scheduling a subframe in the embodiment of the present invention includes the following steps:
- Step 601 Receive PH information of a current time of each configured and activated cell reported by the terminal, where the cell includes a cell whose current time is a downlink subframe.
- Step 602 Perform scheduling on subsequent uplink subframes according to the received PH information.
- the maximum transmit power of the carrier allowed to be configured in each cell may also be received. Specifically, if the maximum transmit power of the carrier allowed to be configured on the PHR MAC CE is used, in step 601, the maximum transmit power of the carrier allowed to be configured in each cell is extracted from the PHR MAC CE.
- the method for maintaining "3" in a sub-frame of the embodiment of the present invention includes the following steps: Step 701: The terminal determines whether there is a PH information trigger on any configured and activated cell aggregated by the terminal in the subframe i. If yes, step 702 is performed; otherwise, the process ends.
- Step 702 The terminal determines whether the format of the PHR MAC CE and the PHR MAC CE subheader and the number of bits to be occupied are determined according to whether the RRC configures the PUCCH and the PUSCH to transmit data in parallel, and whether the PHR MAC CE using the extended format is configured.
- the PHR MAC CE needs to carry type 2 PH information.
- the number of bits that need to be occupied is the total number of bits occupied by the PHR MAC CE subheader + PHR MAC CE.
- Step 704 The MAC layer of the terminal notifies the physical layer to calculate the PH value on all configured and activated cells, and then organizes the PHR MAC CE.
- Step 705 The terminal performs PHR MAC CE reporting, and starts or restarts the prohibitPHR-Timer and the periodicPHR-Timer, and cancels the triggering of all PH information reporting.
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.
- computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the device is implemented in a flow or a flow or a block diagram of a block or multiple The function specified in the box.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
- the PH information of the downlink subframe can be determined, so that the PH information in multiple cells with different uplink and downlink configurations is incomplete.
- the cell that receives the PH information of the current time of each configured and activated cell of the receiving terminal includes the cell whose current time is the downlink subframe, thereby avoiding the incompleteness of the PH information, and affecting subsequent scheduling, which is beneficial to subsequent scheduling and improvement.
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Abstract
本申请实施例涉及无线通信技术领域,特别涉及一种功率余量上报的方法和设备,用以解决现有技术中存在的PH信息只针对上行子帧上报,当终端聚合的配置且激活的多个小区具有不同TDDUL/DL配置的情况下,现有PHR机制不利于后续调度的问题。本申请实施例中功率余量上报的方法包括:在需要上报PH信息时,确定每个配置且激活的小区当前时刻的PH信息,其中所述小区包括当前时刻是下行子帧的小区;上报确定的PH信息。由于功率余量上报时对当前为下行子帧的配置且激活的小区釆用虚拟传输格式获得该小区的PH信息,该PH信息有助于基站进行后续调度。
Description
功率余量上报和调度子帧的方法、 系统及设备 本申请要求在 2011年 3月 3日提交中国专利局, 申请号为 201110051866.1、发明名称为"功 率余量上报和调度子桢的方法、 系统及设备"的中国专利申请的优先权, 其全部内容通过引用 结合在本申请中,
技术领域
本发明涉及无线通信技术领域, 特别涉及一种功率余量上 4艮和调度子帧的方法、 系统 及设备。 背景技术
目前的 LTE ( Long Term Evolution, 长期演进) 系统, 一个小区中只能有一个载波, 并且最大带宽为 20MHz。 对于 LTE-A ( LTE- Advanced, 增强长期演进) 系统, LTE-A 系 统的峰值速率比 LTE系统有了很大的提高, LTE-A系统要求下行速率达到 IGbps, 上行速 率达到 500Mbps。 显然, 20MHz的带宽已经无法满足这种需求。 为了让 LTE-A系统能够 符合要求, 引入 CA ( Carrier Aggregation, 栽波聚合)技术,
载波聚合技术是终端可以在多个小区上同时工作, 这些小区在频域上可以是连续或者 非连续的, 各个小区的带宽可以相同或者不同。 为保持和 LTE系统兼容, 每个小区的最大 带宽限制为 20MHz。 目前一般认为一个用户终端聚合的小区个数最大为 5个。 此外, 基于 不同小区可能支持不同功能, LTE-A系统还对用户终端聚合的小区进行了如下分类:
PCell ( Primary Cell, 主小区): 终端聚合的多个小区中只有一个小区被定义为 PCell, PCell由基站选择,并通过 RRC ( Radio Resource Control,无线资源控制)信令配置给终端。 只有 PCell上配置有 PUCCH ( Physical Uplink Control Channel , 物理层上行控制信道)。
SCel〖(辅小区, Secondary Cell ): 终端聚合的所有小区中除了 PCell之外的小区都是 SCelU
LTE-A RIO (版本 10 ) 中定义的 PHR ( Power Headroom Reporting, 功率余量上报 )需 要上报配置且激活的小区上的 PH ( Power Headroom, 功率余量)信息, 即一旦有 PHR触 发, 所有配置且激活的小区上的 PH信息一起打包上报。
R10中由于上行只支持频带内的载波聚合(intra-band CA ), 因此一个终端所聚合的所 有上行栽波肯定使用相同的 TDD ( Time Division Duplex, 时分双工)配置。 而在 R11 系统 中, 会引入使用不同频带间的小区聚合 (inter-band CA), 这样 LTE-A的系统聚合的频带可
能是和其它系统 (比如 LTE系统)共享或者相邻的, 比如图 1A所示, LTE-A终端聚合了 三个小区: Cell Cell2和 Cell3。 其中 Cell l和 Cell2使用相同的 Band 1, 而 Cell 3使用 Band 2。 为了避免 TDD系统上下行交叉干扰, Band 1应该和 3G/LTE TDD Band A使用可 以共存的 TDD UL/DL ( Uplink/Downlink, 上 /下行)配置, 即没有 UL DL交叉千扰的配置, 对于 LTE系统,指的就是相同的 TDD UL/DL配置。 而 Band 2则应该和 3 G/LTE TDD Band B使用可以共存的 TDD UL/DL配置。如果 Band A和 Band B使用的 TDD UL/DL配置不同, 那么 Band l和 Band2使用的 TDD UL/DL配置也就不相同。
对于 R10 , 由于上行只支持 intra-band聚合, 那么对于 TDD系统, 同一时刻, 所有小 区要么都处于上行子帧, 要么都处于下行子帧, 因此一旦 PH上报触发, 终端可以利用上 行子帧上报所有配置且激活的小区上的 PH信息, 以便基站获得终端整体的 PH信息。
对于 R11 , 由于 inter-band聚合以及多 TDD UL/DL子帧配置的引入, 同一个时刻, 不 同小区的子帧状态可能不同, 如下图 1B所示。 假设小区 1和小区 2分别采用 TDD UL/DL 配置 0和配置 1 , 对于 T1时刻, 如果小区 1上有 PH上 触发, 目前的 PH信息只针对配 置且激活的上行子帧上报, 则 T 1时刻, 终端只会上报小区 1上的 PH信息, 该 PH信息并 不能反映小区 1和小区 2同时为上行子帧情况下终端的功率分配情况, 因此当 T2、 Τ3和 Τ4时刻小区 1和小区 2都是上行子帧时, 基站就无法利用 T1时刻获得的 ΡΗ信息, 进行 Τ2、 Τ3和 Τ4时刻的 UL调度。
综上所述, 目前的 ΡΗ信息只针对上行子帧上报, 因此当终端聚合的配置且激活的多个 小区具有不同 TDD UL/DL配置的情况下, 现有 PHR机制不利于后续调度。 发明内容
本发明实施例提供一种功率余量上 4艮和调度子帧的方法、 系统及设备, 用以解决现有 技术中存在的 ΡΗ信息只针对上行子帧上^ =艮, 当终端聚合的配置且激活的多个小区具有不 同 TDD UL/DL配置的情况下, 现有 PHR机制不利于后续调度的问题。
本发明实施例提供的一种功率余量上报的方法, 包括:
在需要上报功率余量 ΡΗ信息时, 确定每个配置且激活的小区当前时刻的 ΡΗ信息, 其中所述小区包括当前时刻是下行子帧的小区;
上报确定的 ΡΗ信息。
本发明实施例提供的一种调度子帧的方法, 包括:
接收终端上报的每个配置且激活的小区当前时刻的 ΡΗ信息, 其中所述小区包括当前 时刻是下行子帧的小区;
根据收到的 PH信息, 对后续上行子帧进行调度。
本发明实施例提供的一种功率余量上报的设备, 包括:
PH信息确定模块, 用于在需要上报 PH信息时, 确定每个配置且激活的小区当前时刻 的 PH信息, 其中所述小区包括当前时刻是下行子帧的小区;
上 模块, 用于上报确定的 PH信息。
本发明实施例提供的一种调度子帧的设备, 包括:
接收模块, 用于接收终端上报的每个配置且激活的小区当前时刻的 PH信息, 其中所 述小区包括当前时刻是下行子帧的小区;
调度模块, 用于根据收到的 PH信息, 对后续上行子帧进行调度。
本发明实施例提供的一种调度子帧的系统, 包括:
终端, 用于在需要上报 PH信息时, 确定每个配置且激活的小区当前时刻的 PH信息, 上报确定的 PH信息, 其中所述小区包括当前时刻是下行子帧的小区;
网络侧设备, 用于接收终端上报的每个配置且激活的小区当前时刻的 PH信息, 根据 收到的 PH信息, 对后续上行子帧进行调度。
由于可以将下行子帧虚拟为上行子帧, 按照虚拟上行 PUCCH和 /或 PUSCH传输格式 确定小区的 PH信息, 因此当该小区变为上行子帧时可以利用该 PH信息调度该子帧上的 上行传输。
由于基站接收到的终端上^ =艮的 PH信息是每个配置且激活的小区在当前时刻的 PH信 息, 包括当前时刻是下行子帧的小区的 PH信息, 从而避免 PH信息不完整, 对后续调度 产生的影响, 有利于后续的调度以及提高了调度的效率和系统稳定性。 附图说明
图 1A为 LTE-A系统 CA终端聚合的不同 band使用不同 UL/DL配置示意图; 图 1B为多 TDD UL/DL配置示意图;
图 2为本发明实施例调度子帧的系统结构示意图;
图 3为本发明实施例终端的结构示意图;
图 4为本发明实施例网络侧设备的结构示意图;
图 5为本发明实施例功率余量上报的方法流程示意图;
图 6为本发明实施例调度子帧的方法流程示意图;
图 7为本发明实施例一个子帧内 PH上报维护的方法流程示意图。
具体实施方式
本发明实施例终端在需要上报 PH信息时, 确定并上报每个配置且激活的小区当前时 刻的 PH信息, 其中所述小区包括当前时刻是下行子帧的小区。 由于可以确定下行子帧的 PH信息, 从而避免上下行配置不同的多个小区中 PH信息不完整的情况。
本发明实施例接收终端上报的每个配置且激活的小区当前时刻的 PH信息, 根据收到 的 PH信息, 对后续上行子帧进行调度, 其中所述小区包括当前时刻是下行子帧的小区。 由于接收的终端上报的每个配置且激活的小区当前时刻的 PH信息, 包括当前时刻是下行 子帧的小区的 PH信息, 从而避免 PH信息不完整, 对后续调度产生的影响。
其中, 本发明实施例的方案可以应用于 LTE-A系统中, 也可以应用于其他具备下列条 件的系统中: 同一个时刻, 终端聚合的不同小区的子帧状态可能不同。
在下面的说明过程中, 先从网络侧和终端侧的配合实施进行说明, 最后分别从网络侧 与终端侧的实施进行说明, 但这并不意味着二者必须配合实施, 实际上, 当网络侧与终端 侧分开实施时, 也解决了分别在网络侧、 终端侧所存在的问题, 只是二者结合使用时, 会 获得更好的技术效果。
如图 2所示, 本发明实施例调度子帧的系统包括: 终端 10和网络侧设备 20。
终端 10, 用于在需要上报 PH信息时, 确定每个配置且激活的小区当前时刻的 PH信 息, 上报确定的 PH信息, 其中小区包括当前时刻是下行子帧的小区。
网络侧设备 20, 用于接收终端上报的每个配置且激活的小区当前时刻的 PH信息, 根 据收到的 PH信息, 对后续上行子帧进行调度。
配置且激活的小区是指基站和终端之间能够进行数据传输的小区。 具体的: 配置的小区是指基站通过 RRC ( Radio Resource Control, 无线资源控制)信令配置的 小区。 配置的小区默认处于去激活状态, 即这种小区暂时不能用于基站和终端之间的数据 传输, 需要激活后才能使用。
配置且激活的小区是指基站通过 RRC信令配置后 , 然后再用激活信令激活后的小区, 这种小区可以用于基站和终端之间的数据传输。
由于同一个时刻, 一个终端聚合的不同小区的子帧状态可能不同, 所以每个配置且激 活的小区中有可能包括当前时刻是下行子帧的小区和当前时刻是上行子帧的小区。
对于当前时刻是上行子帧的小区, 如果有真实 PUCCH和 /或真实 PUSCH ( Physical Uplink Shared Channel, 物理上行共享信道 )数据传输, 则按照真实数据传输计算该小区的 PH信息, 否则按照虚拟 PUCCH格式和 /或虚拟 PUSCH传输格式计算该小区 PH信息。
LTE-A系统基于小区计算 PH信息, 定义了 Type (类型) 1和 Type2两种 PH信息类
型, 两种 PH信息的计算规则如下:
-Type 1: PH= Pcmax,c - Ppusch,c
- Type 2: PH = Pcmax,c - Ppusch,c - Ppucch,c
其中:
Pcmax,c: 为该小区上允许的可配置的最大发射功率;
Ppusch,c: 为该小区上的 PUSCH传输的功率;
Ppucch,c: 为该小区上 PUCCH传输的功率。
Type 1和 Type2 PH信息的使用规则如下:
对于 PCell定义了 typel和 type2两种类型的 PH信息。如果配置了 PUCCH和 PUSCH 并行传输, 一旦 PH信息触发, PCell上需要同时上报 typel和 type2 PH信息; 否则只上报 typel PH信息。 对于 SCell, 由于其 UL CC不存在 PUCCH, 因此只定义了 typel PH信息。
较佳的, 对于当前时刻是下行子帧的小区, 通过虚拟 PUCCH格式和 /或虚拟 PUSCH 格式计算该小区的 PH信息。
对于配置且激活的小区, 如果上面有真实 PUCCH或者真实 PUSCH数据传输, 则 Ppusch,c和 Ppucch,c按照真实数据传输计算, 对于没有真实数据传输的情况, 按照虚拟 PUCCH格式和 /或虚拟 PUSCH传输格式计算 Ppusch,c和 Ppucch,c。
虚拟 PUCCH格式和 /或虚拟 PUSCH传输格式可以与 R10中定义的虚拟 PUCCH格式 和 /或 PUSCH传输格式相同或者由物理层定义新的格式。
如果采用 R10中定义的虚拟 PUCCH格式和 /或 PUSCH传输格式,则使用虚拟 PUCCH 传输格式计算 PH时的相关参数取值如下:
功率控制相关参数:
5PUCCH = 0 dB;
用于计算 Pcmax,c的相关参数:
如果该小区上没有并行 PUSCH数据传输的话, 则 MPR ( Maximum Power Reduction, 最大功率回退), A-MPR( Additional Maximum Power Reduction,额外的最大功率回退 ), ATc 取值是 0 dB ; 否则按照真实的 PUSCH数据传输确定这些参数的值。
其它参数使用 RRC层配置的取值。
使用虚拟 PUSCH传输格式计算 PH时的相关参数取值如下:
功率控制相关参数:
101og(MPUSCH,c(i)) = 0 dB;
Ks = 0;
5PUSCH = 0 dB;
其中, MPUSCH、 c(i)、 Ks的物理意义具体参见 RIO中的定义。
用于计算 Pcamx,c的相关参数:
如果该小区上没有并行 PUCCH数据传输的话, 则 MPR, A-MPR, ATc取值是 0 dB; 否 则按照真实 PUCCH数据传输确定这些参数的取值。
其它参数使用 RRC层配置的取值。
通过虚拟 PUCCH格式和 /或虚拟传输格式计算该小区的 PH信息包括三种情况: 只通 过虚拟 PUCCH传输格式计算、 只通过虚拟 PUSCH传输格式计算, 以及通过虚拟 PUCCH 和 PUSCH传输格式计算。
较佳的, 如果该小区是主小区且配置 PUCCH和 PUSCH 并行传输数据, 通过虚拟
PUCCH传输格式和虚拟 PUSCH传输格式计算该小区对应的类型 type2 PH信息(即 Type 2 PH = Pcmax,c - Ppusch,c - Ppucch,c, 下同), 以及通过虚拟 PUSCH传输格式计算该小区对 应的 typel PH信息(即 Type 1 PH= Pcmax,c - Ppusch,c, 下同);
如果该小区是主小区且未配置 PUCCH和 PUSCH并行传输数据,通过虚拟 PUSCH传 输格式计算该小区对应的 typel PH信息;
如果该小区是辅小区, 通过虚拟 PUSCH数据格式计算该小区对应的 typel PH信息。 较佳的, 终端 10在上艮时, 将确定的所有 PH信息置于 PHR MAC CE ( MAC Control Element,媒体接入层控制单元)中,并通过上行子帧发送 PHR MAC CE。其中, PHR MAC CE对应的 MAC子头中 L域长度取值,需要考虑到当前时刻配置且激活的是下行子帧的小 区。
需要说明的是,本发明实施例并不局限于上述通过 PHR MAC CE发送 PH信息的方式, 其他能够发送 PH信息的方式都适用本发明实施例。
在实施中,终端 10确定小区的 PH信息之前,确定该小区可配置的载波最大发射功率。 具体的, 如果该小区是主小区, 确定用于计算 typel PH信息的可配置的载波最大发射 功率, 以及用于计算 type2 PH信息的可配置的载波最大发射功率;
如果该小区是辅小区, 确定用于计算 typel PH信息的可配置的载波最大发射功率。 较佳的, Pcmax,c计算时还可以考虑该时刻终端真实上行数据传输带来的功率回退的 影响。
较佳的, 终端 10在确定可配置的载波最大发射功率后, 上^ I该小区可配置的载波最 大发射功率。
比如,终端 10将最大发射功率置于 PHR MAC CE中,并通过上行子帧发送 PHR MAC
CE。
需要说明的是, 本发明实施例并不局限于上述通过 PHR MAC CE发送最大发射功率 的方式, 其他能够发送最大发射功率的方式都适用本发明实施例。
如果采用 PHR MAC CE上报 PH信息, 较佳的, 按照小区编号, 确定各个小区的 PH 信息在 PHR MAC CE中的顺序。 比如采用升序排列。
当然采用 PHR MAC CE上报载波最大发射功率也可以按照小区编号, 确定各个小区 的最大发射功率在 PHR MAC CE中的顺序。
如果采用 PHR MAC CE上报 PH信息和最大发射功率, 可以将同一小区的 PH信息和 最大发射功率绑定形成上艮信息, 然后按照小区编号, 确定各个小区的上 4艮信息在 PHR MAC CE中的顺序。
在实施中, 触发终端上报 PH信息的机制有很多, 下面列举几种:
prohibitPHR-Timer (禁止 PH上报定时器)超时, 终端有用于上行新数据传输的资源 且终端聚合的多个激活的小区中, 至少一个小区的距离上次 PH信息上报时刻的路损变化 超过上行路损变化阈值( dl-PathlossChange ) dB;
periodicPHR-Timer (周期 PH上 定时器) 超时;
高层配置或者重配 PH上 4艮功能 (禁止 PH上 4艮的配置除外);
激活某个配置的小区。
需要说明的是, 本发明实施例并不局限于上述几种触发方式, 其他能够触发终端进行 上 4艮的方式都适用本发明实施例。
网络侧设备 20需要接收终端上报的每个配置且激活的小区当前时刻的 PH信息,其中 小区包括当前时刻是下行子帧的小区。
较佳的,如果终端 10采用 PHR MAC CE上报 PH信息,则网络侧设备 20从 PHR MAC CE中提取出 PH信息。
较佳的, 如果终端 10采用 PHR MAC CE上报允许配置的载波最大发射功率, 则网络 侧设备 20从 PHR MAC CE中提取出各小区允许配置的载波最大发射功率。
本发明实施例的网络侧设备可以是基站(比如宏基站、家庭基站等),也可以是 RN(中 继)设备, 还可以是其它网络侧设备。
基于同一发明构思, 本发明实施例中还提供了一种终端、 网络侧设备、 功率余量上报 的方法及调度子帧的方法, 由于这些设备和方法解决问题的原理与功率余量上报的系统相 似, 因此这些设备和方法的实施可以参见系统的实施, 重复之处不再赘述。
如图 3所示, 本发明实施例的终端包括: PH信息确定模块 100和上报模块 110。
PH信息确定模块 100, 用于在需要上报 PH信息时, 确定每个配置且激活的小区当前 时刻的 PH信息, 其中所述小区包括当前时刻是下行子帧的小区。
上报模块 110, 用于上报 PH信息确定模块 100确定的 PH信息, 使得网络侧设备能够 根据 PH信息, 对后续上行子帧进行调度。
较佳的,对于当前时刻是下行子帧的小区, PH信息确定模块 100通过虚拟 PUCCH传 输格式和 /或虚拟 PUSCH传输格式计算该小区的 PH信息。
具体的, 如果该小区是主小区且配置 PUCCH和 PUSCH并行传输数据, PH信息确定 模块 100通过虚拟 PUCCH传输格式和虚拟 PUSCH传输格式计算该小区对应的 type2 PH 信息, 以及通过虚拟 PUSCH传输格式计算该小区对应的 typel PH信息; 如果该小区是主 小区且未配置 PUCCH和 PUSCH并行传输数据, PH信息确定模块 100通过虚拟 PUSCH 传输格式计算该小区对应的 typel PH信息; 如果该小区是辅小区, PH信息确定模块 100 通过虚拟 PUSCH传输格式计算该小区对应的 typel PH信息。
较佳的, PH信息确定模块 100在确定小区的 PH之前, 确定小区可配置的载波最大发 射功率; 相应的, 上 模块 110上 确定的小区可配置的载波最大发射功率。
较佳的, 如果该小区是主小区, PH信息确定模块 100确定用于计算 typel PH信息的 可配置的载波最大发射功率, 以及用于计算 type2 PH信息的可配置的载波最大发射功率; 如果该小区是辅小区, PH信息确定模块 100确定用于计算 typel PH信息的可配置的载波 最大发射功率。
较佳的, 上报模块 110将确定的所有 PH信息置于 PHR MAC CE中 , 并通过上行子帧 发送 PHR MAC CE。
较佳的,上报模块 110将可配置的载波最大发射功率置于 PHR MAC CE中, 并通过上 行子帧发送 PHR MAC CE。
较佳的, 上 模块 110上 确定的 PH信息之前, 按照小区编号, 确定各个小区的上 报信息在 PHR MAC CE中的顺序。
如图 4所示, 本发明实施例的网络侧设备包括: 接收模块 200和调度模块 210。
接收模块 200, 用于接收终端上报的每个配置且激活的小区当前时刻的 PH信息, 其 中小区包括当前时刻是下行子帧的小区。
调度模块 210, 用于根据接收模块 200收到的 PH信息, 对后续上行子帧进行调度。 较佳的, 接收模块 200从 PHR MAC CE中提取出 PH信息。
较佳的, 接收模块 200从 PHR MAC CE中提取出各小区允许配置的载波最大发射功 率。
如图 5所示, 本发明实施例功率余量上报的方法包括下列步骤:
步骤 501、 在需要上报 PH信息时, 确定每个配置且激活的小区当前时刻的 PH信息, 其中所述小区包括当前时刻是下行子帧的小区。
步骤 502、 上报确定的 PH信息。
由于同一个时刻, 不同小区的子帧状态可能不同, 所以每个配置且激活的小区中有可 能包括当前时刻是下行子帧的小区和当前时刻是上行子帧的小区。
步骤 501中,对于当前时刻是上行子帧的小区,如果有真实 PUCCH和 /或真实 PUSCH ( Physical Uplink Shared Channel, 物理上行共享信道)数据传输, 则按照真实数据传输计 算该小区的 PH信息, 否则按照虚拟 PUCCH传输格式和 /或虚拟 PUSCH传输格式计算该 小区 PH信息。
较佳的, 步骤 501中, 对于当前时刻是下行子帧的小区, 通过虚拟传输 PUCCH格式 和 /或虚拟 PUSCH传输格式计算该小区的 PH信息。
对于配置且激活的小区, 如果上面有真实 PUCCH或者真实 PUSCH数据传输, 则 Ppusch,c和 Ppucch,c按照真实数据传输计算,对于没有真实传输的情况,按照虚拟 PUCCH 传输格式和 /或虚拟 PUSCH传输格式计算 Ppusch,c和 Ppucch,c。
虚拟 PUCCH传输格式和 /或虚拟 PUSCH传输格式,可以与 R10中定义的虚拟 PUCCH 格式和 /或 PUSCH传输格式相同或者由物理层定义新的传输格式。
通过虚拟 PUCCH传输格式和 /或虚拟 PUSCH传输格式计算该小区的 PH信息包括三 种情况: 只通过虚拟 PUCCH传输格式计算、 只通过虚拟 PUSCH传输格式计算, 以及通 过虚拟 PUCCH和虚拟 PUSCH传输格式计算。
较佳的, 如果该小区是主小区且配置 PUCCH和 PUSCH 并行传输数据, 通过虚拟 PUCCH传输格式和虚拟 PUSCH传输格式计算该小区对应的类型 type2 PH信息, 以及通 过虚拟 PUSCH传输格式计算该小区对应的 typel PH信息;
如果该小区是主小区且未配置 PUCCH和 PUSCH并行传输数据,通过虚拟 PUSCH传 输格式计算该 、区对应的 type 1 PH信息;
如果该小区是辅小区, 通过虚拟 PUSCH传输格式计算该小区对应的 typel PH信息。 较佳的, 步驟 502中, 在上 ^艮时, 将确定的所有 PH信息置于 PHR MAC CE中, 并通 过上行子帧发送 PHR MAC CE。 其中, PHR MAC CE对应的 MAC子头中 L域长度取值, 需要考虑到当前时刻是下行子帧的配置且激活的小区。
需要说明的是,本发明实施例并不局限于上述通过 PHR MAC CE发送 PH信息的方式, 其他能够发送 PH信息的方式都适用本发明实施例。
在实施中, 确定小区的 PH信息之前,还可以确定该小区可配置的载波最大发射功率。 具体的, 如果该小区是主小区, 确定用于计算 typel PH信息的可配置的载波最大发射 功率, 以及用于计算 type2 PH信息的可配置的载波最大发射功率;
如果该小区是辅小区, 确定用于计算 typel PH信息的可配置的载波最大发射功率。 较佳的, Pcmax,c计算时还可以考虑该时刻终端真实上行传输带来的功率回退的影响。 较佳的, 在确定可配置的载波最大发射功率后, 上报该小区可配置的载波最大发射功 率。
比如,将可配置的载波最大发射功率置于 PHR MAC CE中,并通过上行子帧发送 PHR MAC CE。
需要说明的是, 本发明实施例并不局限于上述通过 PHR MAC CE发送可配置的载波 最大发射功率的方式, 其他能够发送可配置的载波最大发射功率的方式都适用本发明实施 例。
如果采用 PHR MAC CE上报 PH信息, 较佳的, 按照小区编号, 确定各个小区的 PH 信息在 PHR MAC CE中的顺序。 比如采用升序排列。
当然采用 PHR MAC CE上报可配置的载波最大发射功率也可以按照小区编号, 确定 各个小区可配置的载波最大发射功率在 PHR MAC CE中的顺序。
如果采用 PHR MAC CE上报 PH信息和可配置的载波最大发射功率,可以将同一小区 的 PH信息和可配置的载波最大发射功率绑定形成上艮信息, 然后按照小区编号, 确定各 个小区的上 4艮信息在 PHR MAC CE中的顺序。
如图 6所示, 本发明实施例调度子帧的方法包括下列步骤:
步骤 601、 接收终端上报的每个配置且激活的小区当前时刻的 PH信息, 其中小区包 括当前时刻是下行子帧的小区。
步骤 602、 根据收到的 PH信息, 对后续上行子帧进行调度。
较佳的, 如果采用 PHR MAC CE上报 PH信息, 则步骤 601中, 从 PHR MAC CE中 提取出 PH信息。
较佳的, 步骤 601中还可以接收各小区允许配置的载波最大发射功率。 具体的, 如果 采用 PHR MAC CE上艮允许配置的载波最大发射功率, 则步骤 601中, 从 PHR MAC CE 中提取出各小区允许配置的载波最大发射功率。
其中, 图 5和图 6可以合成一个流程, 形成一个新的调度子帧的方法, 即先执行步骤 501和步骤 502, 再执行步骤 601和步骤 602。
如图 7所示, 本发明实施例一个子帧内 11上"¾维护的方法包括下列步骤:
步驟 701、终端在子帧 i判断终端聚合的任何一个配置且激活的小区上是否有 PH信息 上艮触发, 如果有, 则执行步骤 702; 否则, 结束本流程。
步骤 702、 终端根据 RRC是否配置了 PUCCH和 PUSCH并行传输数据, 以及是否配 置了使用扩展格式的 PHR MAC CE,确定 PHR MAC CE和 PHR MAC CE子头的格式以及 需要占用的比特数。
比如: 如果配置了 PUCCH和 PUSCH并行传输数据 , 那么 PHR MAC CE中需要携带 type2 PH信息;
需要占用的比特数就是 PHR MAC CE子头 +PHR MAC CE占用的总的比特数。
步骤 703、终端在子帧 i配置且激活小区内,查看是否有可以承载 PHR MAC CE和 PHR MAC CE子头的用于新数据传输的上行子帧资源, 如果有, 则执行步驟 704; 否则, 跳出 本流程。
步骤 704、终端的 MAC层通知物理层计算所有配置且激活的小区上的 PH值, 然后组 织 PHR MAC CE。
其中, 对于当前时刻处于下行子帧的小区也需要按照虚拟传输格式计算 PH信息。 步骤 705、 终端进行 PHR MAC CE上报, 并启动或重启 prohibitPHR-Timer 以及 periodicPHR- Timer, 同时取消所有 PH信息的上报触发。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程序产 品。 因此, 本发明可采用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实 施例的形式。 而且, 本发明可釆用在一个或多个其中包含有计算机可用程序代码的计算机 可用存储介质(包括但不限于磁盘存储器、 CD-ROM、 光学存储器等)上实施的计算机程 序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产品的流程图 和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流 程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个
方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了基本创造性概 念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权利要求意欲解释为包括优选 实施例以及落入本发明范围的所有变更和修改。
由于可以确定下行子帧的 PH信息, 从而避免上下行配置不同的多个小区中 PH信息 不完整的情况。
由于接收终端上报的每个配置且激活的小区当前时刻的 PH信息的小区包括当前时刻 是下行子帧的小区, 从而避免 PH信息不完整, 对后续调度产生的影响, 有利于后续的调 度以及提高了调度的效率和系统稳定性。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和 范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。
Claims
1、 一种功率余量上 的方法, 其特征在于, 该方法包括:
在需要上报功率余量 PH信息时, 确定每个配置且激活的小区当前时刻的 PH信息, 其中所述小区包括当前时刻是下行子帧的小区;
上报确定的 PH信息。
2、 如权利要求 1 所述的方法, 其特征在于, 所述确定每个配置且激活的小区当前时 刻的 PH信息包括:
对于当前时刻是下行子帧的小区, 通过虚拟物理层控制信道 PUCCH传输格式和 /或虚 拟物理上行共享信道 PUSCH传输格式计算该小区的 PH信息。
3、 如权利要求 2所述的方法, 其特征在于, 通过虚拟 PUCCH格式和 /或虚拟 PUSCH 格式计算该小区的 PH信息包括:
如果该小区是主小区且配置 PUCCH和 PUSCH并行传输数据,通过虚拟 PUCCH传输 格式和虚拟 PUSCH传输格式计算该小区对应的类型 type2 PH信息,以及通过虚拟 PUSCH 传输格式计算该 '』、区对应的 type 1 PH信息;
如果该小区是主小区且未配置 PUCCH和 PUSCH并行传输数据,通过虚拟 PUSCH传 输格式计算该小区对应的 typel PH信息;
如果该小区是辅小区, 通过虚拟 PUSCH传输格式计算该小区对应的 typel PH信息。
4、 如权利要求 1 - 3任一所述的方法, 其特征在于, 上报确定的 PH信息包括: 将确定的所有 PH信息置于功率余量媒体接入层控制单元 PHR MAC CE中 ,并通过上 行子帧发送该 PHR MAC CE。
5、 如权利要求 1 ~ 3任一所述的方法, 其特征在于, 确定小区的 PH信息之前, 还包 括:
确定该小区可配置的载波最大发射功率;
确定所述该小区可配置的载波最大发射功率之后还包括:
上"¾所述该小区可配置的载波最大发射功率。
6、 如权利要求 5 所述的方法, 其特征在于, 确定小区的可配置的载波最大发射功率 包括:
如果该小区是主小区, 确定用于计算 typel PH信息的可配置的载波最大发射功率, 以 及用于计算 type2 PH信息的可配置的载波最大发射功率;
如果该小区是辅小区, 确定用于计算 typel PH信息的可配置的载波最大发射功率。
7、 如权利要求 5所述的方法, 其特征在于, 上报可配置的载波最大发射功率包括: 将所述小区可配置的载波最大发射功率置于 PHR MAC CE中, 并通过上行子帧发送 该 PHR MAC CE。
8、 如权利要求 1所述的方法, 其特征在于, 确定 PH信息之后, 上报确定的 PH信息 之前, 还包括:
按照小区编号的升序或者降序, 确定各个小区的上^ ¾信息在 PHR MAC CE中的顺序。
9、 一种调度子帧的方法, 其特征在于, 该方法包括:
接收终端上报的每个配置且激活的小区当前时刻的 PH信息, 其中所述小区包括当前 时刻是下行子帧的小区;
根据收到的 PH信息, 对后续上行子帧进行调度。
10、 如权利要求 9所述的方法, 其特征在于, 接收 PH信息包括:
从 PHR MAC CE中提取出 PH信息。
11、 如权利要求 9或 10所述的方法, 其特征在于, 该方法还包括:
从 PHR MAC CE中提取出各小区允许配置的载波最大发射功率。
12、 一种功率余量上报的设备, 其特征在于, 该设备包括:
PH信息确定模块, 用于在需要上报 PH信息时, 确定每个配置且激活的小区当前时刻 的 PH信息, 其中所述小区包括当前时刻是下行子帧的小区;
上报模块, 用于上 4艮确定的 PH信息。
13、 如权利要求 12所述的设备, 其特征在于, 所述 PH信息确定模块具体用于: 对于当前时刻是下行子帧的小区, 通过虚拟 PUCCH传输格式和 /或虚拟 PUSCH传输 格式计算该小区的 PH信息。
14、 如权利要求 13所述的设备, 其特征在于, 所述 PH信息确定模块具体用于: 如果该小区是主小区且配置 PUCCH和 PUSCH并行传输数据,通过虚拟 PUCCH传输 格式和虚拟 PUSCH传输格式计算该小区对应的 type2 PH信息, 以及通过虚拟 PUSCH传 输格式计算该小区对应的 typel PH信息;
如果该小区是主小区且未配置 PUCCH和 PUSCH并行传输数据,通过虚拟 PUSCH传 输格式计算该小区对应的 typel PH信息;
如果该小区是辅小区, 通过虚拟 PUSCH传输格式计算该小区对应的 typel PH信息。
15、 如权利要求 12 - 14任一所述的设备, 其特征在于, 所述上报模块具体用于: 将确定的所有 PH信息置于 PHR MAC CE中, 并通过上行子帧发送 PHR MAC CE。
16、如权利要求 12 - 14任一所述的设备,其特征在于,所述 PH信息确定模块还用于: 确定小区的 PH之前, 确定小区可配置的载波最大发射功率;
所述上 ·¾模块还用于:
上 4艮确定的小区可配置的载波最大发射功率。
17、 如权利要求 16所述的设备, 其特征在于, 所述 PH信息确定模块具体用于: 如果该小区是主小区, 确定用于计算 typel PH信息的可配置的载波最大发射功率, 以 及用于计算 type2 PH信息的可配置的载波最大发射功率; 如果该小区是辅小区, 确定用于 计算 type 1 PH信息的可配置的载波最大发射功率。
18、 如权利要求 16所述的设备, 其特征在于, 所述上报模块具体用于:
将所述小区可配置的载波最大发射功率置于 PHR MAC CE中, 并通过上行子帧发送
PHR MAC CE。
19、 如权利要求 12所述的设备, 其特征在于, 所述上报模块还用于:
上报确定的 PH信息之前, 按照小区编号, 确定各个小区的上报信息在 PHR MAC CE 中的顺序。
20、 一种调度子帧的设备, 其特征在于, 该设备包括:
接收模块, 用于接收终端上报的每个配置且激活的小区当前时刻的 PH信息, 其中所 述小区包括当前时刻是下行子帧的小区;
调度模块, 用于根据收到的 PH信息, 对后续上行子帧进行调度。
21、 如权利要求 20所述的设备, 其特征在于, 所述接收模块具体用于:
从 PHR MAC CE中提取出 PH信息。
22、 如权利要求 20或 21所述的设备, 其特征在于, 所述接收模块还用于: 从 PHR MAC CE中提取出各小区允许配置的载波最大发射功率。
23、 一种调度子帧的系统, 其特征在于, 该系统包括:
终端, 用于在需要上报 PH信息时, 确定每个配置且激活的小区当前时刻的 PH信息, 上报确定的 PH信息, 其中所述小区包括当前时刻是下行子帧的小区;
网络侧设备, 用于接收终端上报的每个配置且激活的小区当前时刻的 PH信息, 根据 收到的 PH信息, 对后续上行子帧进行调度。
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| US14/002,990 US9736714B2 (en) | 2011-03-03 | 2012-02-29 | Method, system, and device for power headroom reporting and sub-frame scheduling |
| EP12752136.7A EP2683193B1 (en) | 2011-03-03 | 2012-02-29 | Method, system, and device for power headroom reporting and sub-frame scheduling |
| KR1020137026061A KR101538415B1 (ko) | 2011-03-03 | 2012-02-29 | 전력 헤드룸 리포팅 및 서브 프레임 스케쥴링 방법, 시스템 및 장치 |
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| CN201110051866.1 | 2011-03-03 |
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| EP (1) | EP2683193B1 (zh) |
| KR (1) | KR101538415B1 (zh) |
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| WO (1) | WO2012116643A1 (zh) |
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Also Published As
| Publication number | Publication date |
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| CN102123437A (zh) | 2011-07-13 |
| KR101538415B1 (ko) | 2015-07-22 |
| CN102123437B (zh) | 2016-02-17 |
| US9736714B2 (en) | 2017-08-15 |
| US20130336228A1 (en) | 2013-12-19 |
| EP2683193B1 (en) | 2018-10-24 |
| EP2683193A1 (en) | 2014-01-08 |
| KR20130143709A (ko) | 2013-12-31 |
| EP2683193A4 (en) | 2015-01-07 |
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