WO2017000791A1 - Energy-saving method and device for lte system - Google Patents

Energy-saving method and device for lte system Download PDF

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Publication number
WO2017000791A1
WO2017000791A1 PCT/CN2016/086046 CN2016086046W WO2017000791A1 WO 2017000791 A1 WO2017000791 A1 WO 2017000791A1 CN 2016086046 W CN2016086046 W CN 2016086046W WO 2017000791 A1 WO2017000791 A1 WO 2017000791A1
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WIPO (PCT)
Prior art keywords
subframe
energy saving
mbsfn
mbsfn subframe
format
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PCT/CN2016/086046
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French (fr)
Chinese (zh)
Inventor
刘蕊
闫鹏周
谭永龙
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中兴通讯股份有限公司
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Publication of WO2017000791A1 publication Critical patent/WO2017000791A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This document relates to, but is not limited to, mobile communication technologies, and in particular, to an energy-saving method and apparatus for a Long Term Evolution (LTE) system.
  • LTE Long Term Evolution
  • LTE Long-term evolution
  • LTE Long Term Evolution
  • the power amplifier in the LTE system is one of the devices with large power consumption of the base station equipment of the communication system, which effectively improves the efficiency of the power amplifier, and is an effective means for reducing the power consumption of the power amplifier and improving the overall efficiency of the base station.
  • Each radio frame of the LTE system is 10 ms, and each radio frame is composed of 10 radio subframes, each radio subframe is 1 ms, and each radio subframe is in the case of a normal cyclic prefix (CP, Cyclic Prefix). It consists of 14 symbols and, in the case of an extended CP, consists of 12 symbols.
  • CP Cyclic Prefix
  • the LTE system is a system for dynamically allocating physical resources.
  • the number of resource blocks (RBs) that do not carry useful signals or bear the useful signals in a large number of subframes is small.
  • power amplifiers in communication systems are generally in a constant open mode. The disadvantage of such power amplifier control is that there is a waste of power when the traffic is low.
  • the content of the downlink physical channel includes: a reference signal (RS, Reference Signal), a downlink synchronization channel (PSCH, Primary Synchronization Channel, and Secondary Synchronization Channel (SSCH)), which is used to support the physical layer.
  • the cell search implements the identification and downlink synchronization of the cell by the user terminal.
  • a physical broadcast channel (PBCH) is used to broadcast basic physical layer configuration information of a cell.
  • the Physical Downlink Shared Channel (PDSCH) is used for scheduling and transmission of downlink data.
  • a Physical Control Format Indicator Channel (PCFICH) is used to indicate the format of the physical layer control channel.
  • Physical HARQ indicator channel PHICH, The Physical Hybrid ARQ Indicator Channel
  • PHICH The Physical Hybrid ARQ Indicator Channel
  • the Physical Downlink Control Channel (PDCCH) carries scheduling information of uplink/downlink data transmission and uplink power control command information.
  • the closing of the Orthogonal Frequency Division Multiplexing (OFDM) symbol corresponding to the control information has an impact on service access and performance, so the control signal is not symbolically turned off.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the related method is to analyze the mapping relationship between the control channel and the data channel to the physical symbols of different formats of 10 subframes.
  • the data is collectively scheduled in a partial subframe, and the symbols of the symbols in the time domain of 10 subframes are obtained. Save the bitmap and send it to the RF subsystem.
  • the radio subsystem will open all the symbols corresponding to the subframe.
  • the radio subsystem opens the symbol corresponding to the control information, and the corresponding power amplifier is turned off.
  • 1 is a schematic diagram of a power switch state of a radio frequency power amplifier (PA) that turns off the symbol turn-off function;
  • PA radio frequency power amplifier
  • FIG. 2 is a schematic diagram of a power switch state of an RF power amplifier with a symbol turn-off function turned on.
  • the embodiments of the present invention provide an energy saving method and device for an LTE system, which can further improve symbol energy saving efficiency.
  • An embodiment of the present invention provides an energy-saving method for an LTE system, including: determining, when the energy-saving condition is satisfied according to the service volume, determining a subframe that needs to be saved; and when the subframe that needs to be saved is satisfied, setting the multicast single-frequency network to be multicast In the condition of the MBSFN subframe format, the subframe that needs to be saved is set to the MBSFN subframe format; and the symbol energy saving bitmap is determined according to the configuration information of the MBSFN subframe.
  • the setting of the MBSFN subframe format includes: the control format indicates that the CFI is configured to be equal to 1 or 2.
  • the method further includes: controlling, according to the symbol energy saving bitmap, a switching state of the power amplifier.
  • the method further includes: when the subframe that needs to be saved does not satisfy the condition set to the MBSFN subframe format, according to This sub-frame determines the symbol energy saving bitmap.
  • the determining, according to the configuration information of the MBSFN subframe, determining the symbol energy saving bitmap includes: notifying the configuration information of the terminal MBSFN subframe by using the system message SIB2, and determining, according to the timing correspondence between the MBSFN subframe format and the regular cyclic prefix CP. Symbolic energy saving bitmap.
  • the embodiment of the present invention further provides an energy-saving device of an LTE system, including: a determining module, configured to determine a subframe that needs to be saved when the energy-saving condition is determined according to the traffic volume; and the first processing module is configured to save energy when When the subframe satisfies the condition set to the MBSFN subframe format, the subframe that needs to be saved is set to the MBSFN subframe format; and the second processing module is configured to determine the symbol energy saving bitmap according to the configuration information of the MBSFN subframe.
  • a determining module configured to determine a subframe that needs to be saved when the energy-saving condition is determined according to the traffic volume
  • the first processing module is configured to save energy when When the subframe satisfies the condition set to the MBSFN subframe format, the subframe that needs to be saved is set to the MBSFN subframe format
  • the second processing module is configured to determine the symbol energy saving bitmap according to the configuration information of the MBSFN subframe.
  • the setting of the MBSFN subframe format includes: the control format indicates that the CFI is configured to be equal to 1 or 2.
  • the apparatus further includes: a control module configured to control a switching state of the power amplifier according to the symbol energy saving bitmap.
  • the second processing module is further configured to: when the subframe that needs to be saved does not satisfy the condition that is set to the MBSFN subframe format, determine the symbol energy saving bitmap according to the subframe.
  • the second processing module is configured to: according to the configuration information of the MBSFN subframe, the determining the symbol energy saving bitmap includes: notifying the configuration information of the terminal MBSFN subframe by using the system message SIB2, and according to the MBSFN sub- The symbol correspondence between the frame format and the regular cyclic prefix CP determines the symbol energy saving bitmap.
  • the subframe that needs to be saved is determined; when the subframe that needs to be saved meets the condition of the MBSFN subframe format set to the multicast multicast single frequency network, it will be required.
  • the energy-saving subframe is set to the MBSFN subframe format; and the symbol energy saving bitmap is determined according to the configuration information of the MBSFN subframe. In this way, the symbol is turned off according to the particularity of the MBSFN subframe format, thereby achieving better energy saving effects and further improving the symbol energy saving efficiency.
  • FIG. 1 is a schematic diagram of a power switch state of a radio frequency power amplifier that turns off a symbol turn-off function in the related art
  • FIG. 2 is a schematic diagram of a power switch state of a radio frequency power amplifier with a symbol turn-off function turned on in the related art
  • FIG. 3 is a flowchart of an energy saving method of an LTE system according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an MBSFN format of a resource unit set (REG) of a regular CP when a Control Format Indicator (CFI) is 2;
  • REG resource unit set
  • CFI Control Format Indicator
  • FIG. 5 is a flowchart of a method for saving energy in an LTE system according to an embodiment of the present invention
  • FIG. 6 is a block diagram of an energy-saving device of an LTE system according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of an energy saving method of an LTE system according to an embodiment of the present invention. The method can be applied, but is not limited to, a power amplifier unit of a remote radio frequency module RRU. As shown in FIG. 3, the energy saving method of the LTE system provided in this embodiment includes the following steps:
  • Step 11 When it is judged that the energy saving condition is satisfied according to the traffic volume, the subframe that needs to be saved is determined.
  • the user data is concentrated in a specific subframe, and the statistical result of a certain statistical period determines whether the subframe satisfies the shutdown condition. If the shutdown condition is met, one subframe is closed; when the traffic is greater than the threshold, one subframe is turned on.
  • Step 12 When the subframe that needs to be saved meets the condition of being set to the multicast multicast single frequency network (MBSFN) subframe format, the subframe that needs to be saved is set to the MBSFN subframe format.
  • MBSFN multicast multicast single frequency network
  • the Multicast Multicast Network is a single-frequency network technology for broadcasting multicast services in the LTE system, which refers to the same multimedia multicast service (MBMS, Multimedia Broadcast and Multicast Service)
  • MBMS Multimedia Broadcast and Multicast Service
  • SFN Single Frequency Network
  • MBSFN uses the same cell
  • the frequency band simultaneously transmits MBMS service data, and is simultaneously received and soft-combined at the receiving end. Due to the service characteristics of multicast multicast of MBSFN, the delay spread caused by the combination of a larger cell radius and multi-cell signals increases the frequency selectivity of the wireless channel. Therefore, MBSFN uses a special subframe format: MBSFN subframe.
  • the MBSFN adopts the extended CP format. Therefore, when the subframe format is a regular CP, the MBSFN subframe format has two parts, the former part is a non-MBSFN domain, and the latter part is an MBSFN domain.
  • the subframe 0 is a normal CP
  • the non-MBSFN domain in the MBSFN subframe is to use a regular CP
  • the MBSFN domain is to use an extended CP.
  • special processing is required.
  • FIG. 4 is a schematic diagram of an MBSFN format of a Resource Unit Set (REG) of a regular CP when the Control Format Indicator (CFI) is 2.
  • REG Resource Unit Set
  • CFI Control Format Indicator
  • the first and second symbols in the MBSFN subframe use a regular CP and retain unicast pilots, which can be used for transmission of channels such as PDCCH, PCFICH, and PHICH. Other symbols in the subframe are used for MBSFN signal transmission.
  • the subframe format is an extended CP
  • the former part is a non-MBSFN domain
  • the latter part is an MBSFN domain.
  • the data format is consistent with the extended CP.
  • the condition set to the MBSFN subframe format includes: the CFI is configured to be equal to 1 or 2.
  • FDD Frequency Division Duplexing
  • bit 4 represents subframe 2
  • bit 3 represents subframe 3
  • bit 2 represents subframe 6
  • Frame 8 For Time Division Duplexing (TDD): One Frame bit 5 represents subframe 3, bit 4 represents subframe 4, bit 3 represents subframe 7, bit 2 represents subframe 8, bit 1 represents subframe 9, and bit 0 is invalid; Setting the corresponding bit to 1 indicates that the corresponding subframe is an MBSFN subframe. Therefore, the subframe number needs to follow the configuration of the subframe number in the structure parameter mbsfn-SubframeConfigList in the system message SIB2.
  • Step 13 Determine a symbol energy saving bitmap according to the configuration information of the MBSFN subframe.
  • the step 13 includes: notifying the configuration information of the terminal MBSFN subframe by the system message SIB2, and determining the symbol energy saving bitmap according to the timing correspondence between the MBSFN subframe format and the regular cyclic prefix CP.
  • the method further comprises: controlling the switching state of the power amplifier according to the symbol energy saving bitmap.
  • the configuration information related to the MBSFN subframe of the terminal is notified.
  • the configuration information of the MBSFN subframe is located in the mbsfn-SubframeConfigList field in the system message SIB2, and the protocol definition structure is as follows.
  • the radioframeAllocationPeriod adopts n1
  • the radioframeAllocationOffset is fixed to 0
  • oneFrame is used to notify the terminal that a radio frame can be set as an MBSFN sub-frame.
  • the baseband part After notifying the terminal of the MBSFN subframe position information, the baseband part does not need to change the symbol level processing of the subframe format, and can still perform symbol processing according to the regular CP, and simultaneously obtain the timing relationship between the MBSFN format of the radio frequency module and the regular CP.
  • Symbolic energy saving bitmap In addition to the reserved control channel, the OFDM symbols corresponding to the MBSFN domain are set to the power saving state, and the RF power amplifier turns off the power amplifier according to the symbol energy saving bitmap to achieve the purpose of energy saving.
  • the number of symbols that can be normally turned off is 10 when there are symbols such as pilots in normal subframes.
  • the maximum number of symbols that can be turned off is 13 compared to normal subframes. 30%. In this way, the MBSFN-based shutdown technology can reduce the power consumption of the base station, and the experimental access and performance evaluation proves that the technology has no impact on the network and the terminal.
  • the method further includes: when the subframe that needs to save energy is not satisfied When the condition of the MBSFN subframe format of the multicast multicast single frequency network is set, the symbol energy saving bitmap is determined according to the subframe.
  • FIG. 5 is a flowchart of an energy saving method of an LTE system according to an embodiment of the present invention. The specific embodiment will be exemplified below with reference to FIG. 5.
  • This embodiment describes the process of opening the symbol energy saving function, in which the process starts after the symbol energy saving function is turned on.
  • Step S101 determining whether the subframe closing condition is met according to the traffic volume, including: when the traffic volume is lower than the threshold, concentrating the user data in a specific subframe, and determining, according to a result of a certain statistical period, whether the subframe satisfies the shutdown. condition;
  • Step S102 When the subframe closing condition is not met, determining whether the subframe opening condition is met according to the traffic volume, including: when the traffic volume is greater than the threshold, starting a subframe;
  • step S101 perform loop determination in the next detection cycle.
  • Step S101 determining whether the subframe closing condition is met according to the traffic volume, if the current traffic volume is low, and the subframe closing condition is met, step S201 is performed;
  • Step S201 Calculating the closed subframe position, where the subframe 8 is first closed according to the subframe closing order
  • Step S301 determining whether the subframe satisfies the MBSFN energy saving condition, for example, whether the CFI and the closed subframe number satisfy the condition that the MBSFN subframe is set. Therefore, since the CFI is greater than 2, the setting is not satisfied with the MBSFN subframe, and the step is performed.
  • S401 determining whether the subframe satisfies the MBSFN energy saving condition, for example, whether the CFI and the closed subframe number satisfy the condition that the MBSFN subframe is set. Therefore, since the CFI is greater than 2, the setting is not satisfied with the MBSFN subframe, and the step is performed.
  • Step S401 Calculate the symbol energy saving bitmap, Normal CP, 2 antenna, and the energy saving bitmap calculation result is 00010110111011, which sequentially indicates the energy saving state of 14 symbols, 0 means no energy saving, 1 means energy saving, and allocates the symbol energy saving bitmap to the power amplifier. ;
  • Step S501 The power amplifier controls the power state of the power amplifier according to the symbol energy saving bitmap to save energy.
  • Step S101 determining whether the subframe closing condition is met according to the traffic volume, if the current traffic volume is low, and the subframe closing condition is met, step S201 is performed;
  • Step S201 calculating the closed subframe position, according to the subframe closing order, the subframe 8 is currently closed, according to the subframe closing order, the subframe 7 is closed this time;
  • Step S301 determining whether the subframe satisfies the MBSFN energy saving condition, for example, determining whether the CFI, the closed subframe number meets the condition set as the MBSFN subframe, and since the CFI is equal to 2, and the subframe number satisfies the condition, the subframe can be set. Is an MBSFN subframe, after which step S402 is performed;
  • Step S402 The configuration information of the MBSFN subframe is sent to the terminal by using the system message SIB2, and the terminal reads the configuration information of the MBSFN in the broadcast after receiving the broadcast system message SIB2.
  • Step S403 Calculate the symbol energy saving bitmap of the MBSFN subframe, Normal CP, 2 antenna, and the energy saving bitmap calculation result is 00111111111111, which sequentially indicates the energy saving state of 14 symbols, 0 means no energy saving, 1 means energy saving, and symbol energy saving bitmap Configured to a power amplifier;
  • Step S501 The power amplifier controls the power state of the power amplifier according to the symbol energy saving bitmap to save energy.
  • Step S101 determining whether the subframe closing condition is met according to the traffic volume, if the current traffic volume is high, and the subframe closing condition is not met, step S102 is performed;
  • Step S102 judging whether the sub-frame open condition is met according to the traffic volume, the current traffic volume is high, and the sub-frame open condition is met, step S202 is performed;
  • Step S202 Calculate the position of the open subframe, and according to the order in which the subframe is opened, the subframe 8 is currently closed. And sub-frame 7, according to the sub-frame open order, this time open the sub-frame 7;
  • Step S302 determining whether the subframe 7 has performed MBSFN energy saving, that is, determining whether the subframe 7 is set to an MBSFN subframe, and if yes, executing step S402;
  • Step S402 The subframe 7 is set to the normal subframe information and sent to the terminal by using the system message SIB2. After receiving the system message SIB2, the terminal reads the configuration information of the MBSFN in the broadcast.
  • Step S403 Calculate the symbol energy saving bitmap of the MBSFN subframe, expand the CP, and the CFI is 2, 4 antennas.
  • the current energy saving bitmap is 001111111111, which sequentially indicates the energy saving state of 12 symbols, 0 means no energy saving, 1 means energy saving, sub Frame 7 needs to be powered off, the symbol bitmap is modified to 000000000000, and the symbol energy saving bitmap is configured to the power amplifier;
  • Step S501 The power amplifier controls the power state of the power amplifier according to the symbol energy saving bitmap to save energy.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the above method.
  • the embodiment of the present invention further provides an energy-saving device of an LTE system, as shown in FIG. 6, including: a determining module, configured to determine a subframe that needs to be saved when determining that the energy-saving condition is met according to the traffic volume; the first processing module And setting, when the subframe that needs to save energy meets the condition that is set to the MBSFN subframe format, setting the subframe that needs to save energy to an MBSFN subframe format; and the second processing module, configured to configure according to the MBSFN subframe.
  • Information determine the symbol energy saving bitmap.
  • the condition set to the MBSFN subframe format includes: the control format indicates that the CFI is configured to be equal to 1 or 2.
  • the apparatus further includes: a control module configured to control a switching state of the power amplifier according to the symbol energy saving bitmap.
  • the second processing module is further configured to determine a symbol energy saving bitmap according to the subframe when the subframe that needs to be saved does not satisfy the condition that is set to the MBSFN subframe format.
  • the second processing module is configured to determine a symbol energy saving bitmap according to the configuration information of the MBSFN subframe by: notifying the terminal MBSFN by using the system message SIB2 The configuration information of the subframe, and determining the symbol energy saving bitmap according to the timing correspondence between the MBSFN subframe format and the regular cyclic prefix CP.
  • each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function.
  • the invention is not limited to any specific form of combination of hardware and software.
  • the above technical solution further improves the symbol energy saving efficiency.

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Abstract

Provided are an energy-saving method and device for an LTE system, comprising: if an energy-saving condition is determined to be satisfied on the basis of traffic, determining a sub-frame required to save energy; if the sub-frame required to save energy satisfies a condition for setting the sub-frame in an MBSFN sub-frame format, setting the sub-frame required to save energy in the MBSFN sub-frame format; and determining, according to configuration information of an MBSFN sub-frame, a symbol energy-saving bitmap. The energy-saving method and device for the LTE system provided in the technical solution further improve symbol energy-saving efficiency in the related art.

Description

一种LTE***的节能方法及装置Energy-saving method and device for LTE system 技术领域Technical field
本文涉及但不限于移动通信技术，尤其涉及一种长期演进(LTE，Long Term Evolution)***的节能方法及装置。This document relates to, but is not limited to, mobile communication technologies, and in particular, to an energy-saving method and apparatus for a Long Term Evolution (LTE) system.
背景技术Background technique
长期演进(LTE，Long Term Evolution)基站已广泛商用，而LTE***基站功耗效率问题，是当今节约型社会的重要关注点。一方面，节能响应国家的节能环保策略，另一方面，功耗降低给运营商带来纯利润。LTE***中功率放大器是通信***基站设备功耗较大的器件之一，有效提升功率放大器的效率，是降低功放功耗，提升基站整体效率的有效手段。Long-term evolution (LTE, Long Term Evolution) base stations have been widely used, and the power consumption efficiency of LTE system base stations is an important concern of today's conservation-oriented society. On the one hand, energy conservation responds to national energy conservation and environmental protection strategies. On the other hand, power consumption reduces the net profit to operators. The power amplifier in the LTE system is one of the devices with large power consumption of the base station equipment of the communication system, which effectively improves the efficiency of the power amplifier, and is an effective means for reducing the power consumption of the power amplifier and improving the overall efficiency of the base station.
LTE***的一个无线帧为10ms，每个无线帧由10个无线子帧构成，每个无线子帧为1ms，每个无线子帧在常规(normal)循环前缀(CP，Cyclic Prefix)情况下，由14个符号构成，在扩展(extend)CP情况下，由12个符号构成。One radio frame of the LTE system is 10 ms, and each radio frame is composed of 10 radio subframes, each radio subframe is 1 ms, and each radio subframe is in the case of a normal cyclic prefix (CP, Cyclic Prefix). It consists of 14 symbols and, in the case of an extended CP, consists of 12 symbols.
LTE***是动态分配物理资源的***，当业务量较低时，大量的子帧上不承载有用信号或者承载的有用信号占用的资源块(RB，Resource Block)数目很少。目前通信***中功率放大器一般为恒定打开方式，这种功放控制的弊端在于业务量较低时存在电能浪费。The LTE system is a system for dynamically allocating physical resources. When the traffic is low, the number of resource blocks (RBs) that do not carry useful signals or bear the useful signals in a large number of subframes is small. At present, power amplifiers in communication systems are generally in a constant open mode. The disadvantage of such power amplifier control is that there is a waste of power when the traffic is low.
下行物理信道承载的内容包括：参考信号(RS，Reference Signal)、下行同步信道(主同步信道(PSCH，Primary Synchronization Channel)和辅同步信道(SSCH，Secondary Synchronization Channel))，用于支持物理层的小区搜索，实现用户终端对小区的识别和下行同步。物理广播信道(PBCH，Physical Broadcast Channel)用于广播小区基本的物理层配置信息。物理下行共享信道(PDSCH，Physical Downlink Shared Channel)用于下行数据的调度和传输。物理控制格式指示信道(PCFICH，Physical Control Format Indicator Channel)用于指示物理层控制信道的格式。物理HARQ指示信道(PHICH， Physical Hybrid ARQ Indicator Channel)携带对上行数据传输的反馈信息。物理下行控制信道(PDCCH，Physical Downlink Control Channel)承载上/下行数据传输的调度信息和上行功率控制命令信息。控制信息对应的正交频分复用(OFDM，Orthogonal Frequency Division Multiplexing)符号的关闭会对业务接入和性能有影响，所以不对控制信号进行符号关断。The content of the downlink physical channel includes: a reference signal (RS, Reference Signal), a downlink synchronization channel (PSCH, Primary Synchronization Channel, and Secondary Synchronization Channel (SSCH)), which is used to support the physical layer. The cell search implements the identification and downlink synchronization of the cell by the user terminal. A physical broadcast channel (PBCH) is used to broadcast basic physical layer configuration information of a cell. The Physical Downlink Shared Channel (PDSCH) is used for scheduling and transmission of downlink data. A Physical Control Format Indicator Channel (PCFICH) is used to indicate the format of the physical layer control channel. Physical HARQ indicator channel (PHICH, The Physical Hybrid ARQ Indicator Channel) carries feedback information for uplink data transmission. The Physical Downlink Control Channel (PDCCH) carries scheduling information of uplink/downlink data transmission and uplink power control command information. The closing of the Orthogonal Frequency Division Multiplexing (OFDM) symbol corresponding to the control information has an impact on service access and performance, so the control signal is not symbolically turned off.
相关做法是分析控制信道和数据信道至10个子帧不同格式的物理符号的映射关系，当业务流量较低时，将数据集中调度在部分子帧上，得到10个子帧的时域各符号的符号节能位图，并发送给射频子***。对于要打开的子帧，射频子***将打开该子帧对应的所有符号，对于要关闭的子帧，射频子***打开控制信息对应的符号，其余符号对应的功放关闭。其中，图1为关闭符号关断功能的射频功率放大器(PA，Power Amplifier)的电源开关状态示意图；图2为打开符号关断功能的射频功率放大器的电源开关状态示意图。虽然相关做法可以实现符号节能效果，然而，为了达到更好的节能效果，相关技术中的符号节能效率有待进一步提升。The related method is to analyze the mapping relationship between the control channel and the data channel to the physical symbols of different formats of 10 subframes. When the traffic is low, the data is collectively scheduled in a partial subframe, and the symbols of the symbols in the time domain of 10 subframes are obtained. Save the bitmap and send it to the RF subsystem. For the subframe to be opened, the radio subsystem will open all the symbols corresponding to the subframe. For the subframe to be closed, the radio subsystem opens the symbol corresponding to the control information, and the corresponding power amplifier is turned off. 1 is a schematic diagram of a power switch state of a radio frequency power amplifier (PA) that turns off the symbol turn-off function; FIG. 2 is a schematic diagram of a power switch state of an RF power amplifier with a symbol turn-off function turned on. Although the related practice can achieve the symbol energy saving effect, in order to achieve better energy saving effect, the symbol energy saving efficiency in the related art needs to be further improved.
发明内容Summary of the invention
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.
本发明实施例提供一种LTE***的节能方法及装置，能够进一步提升符号节能效率。The embodiments of the present invention provide an energy saving method and device for an LTE system, which can further improve symbol energy saving efficiency.
本发明实施例提供一种LTE***的节能方法，包括：当根据业务量判断满足节能条件时，确定需要节能的子帧；当所述需要节能的子帧满足设置为多播组播单频网络MBSFN子帧格式的条件时，将所述需要节能的子帧设置为MBSFN子帧格式；根据MBSFN子帧的配置信息，确定符号节能位图。An embodiment of the present invention provides an energy-saving method for an LTE system, including: determining, when the energy-saving condition is satisfied according to the service volume, determining a subframe that needs to be saved; and when the subframe that needs to be saved is satisfied, setting the multicast single-frequency network to be multicast In the condition of the MBSFN subframe format, the subframe that needs to be saved is set to the MBSFN subframe format; and the symbol energy saving bitmap is determined according to the configuration information of the MBSFN subframe.
可选地，所述设置为MBSFN子帧格式的条件包括：控制格式指示CFI配置为等于1或2。Optionally, the setting of the MBSFN subframe format includes: the control format indicates that the CFI is configured to be equal to 1 or 2.
可选地，所述根据MBSFN子帧的配置信息，确定符号节能位图之后，该方法还包括：根据所述符号节能位图控制功率放大器的开关状态。 Optionally, after determining the symbol energy saving bitmap according to the configuration information of the MBSFN subframe, the method further includes: controlling, according to the symbol energy saving bitmap, a switching state of the power amplifier.
可选地，所述当根据业务量判断满足节能条件时，确定需要节能的子帧之后，该方法还包括：当所述需要节能的子帧不满足设置为MBSFN子帧格式的条件时，根据该子帧，确定符号节能位图。Optionally, after determining that the energy saving condition is met according to the traffic volume, determining the subframe that needs to be saved, the method further includes: when the subframe that needs to be saved does not satisfy the condition set to the MBSFN subframe format, according to This sub-frame determines the symbol energy saving bitmap.
可选地，所述根据MBSFN子帧的配置信息，确定符号节能位图包括：通过***消息SIB2通知终端MBSFN子帧的配置信息，并根据MBSFN子帧格式与常规循环前缀CP的时序对应关系确定符号节能位图。Optionally, the determining, according to the configuration information of the MBSFN subframe, determining the symbol energy saving bitmap includes: notifying the configuration information of the terminal MBSFN subframe by using the system message SIB2, and determining, according to the timing correspondence between the MBSFN subframe format and the regular cyclic prefix CP. Symbolic energy saving bitmap.
本发明实施例还提供一种LTE***的节能装置，包括：确定模块，设置为当根据业务量判断满足节能条件时，确定需要节能的子帧；第一处理模块，设置为当所述需要节能的子帧满足设置为MBSFN子帧格式的条件时，将所述需要节能的子帧设置为MBSFN子帧格式；第二处理模块，设置为根据MBSFN子帧的配置信息，确定符号节能位图。The embodiment of the present invention further provides an energy-saving device of an LTE system, including: a determining module, configured to determine a subframe that needs to be saved when the energy-saving condition is determined according to the traffic volume; and the first processing module is configured to save energy when When the subframe satisfies the condition set to the MBSFN subframe format, the subframe that needs to be saved is set to the MBSFN subframe format; and the second processing module is configured to determine the symbol energy saving bitmap according to the configuration information of the MBSFN subframe.
可选地，所述设置为MBSFN子帧格式的条件包括：控制格式指示CFI配置为等于1或2。Optionally, the setting of the MBSFN subframe format includes: the control format indicates that the CFI is configured to be equal to 1 or 2.
可选地，该装置还包括：控制模块，设置为根据所述符号节能位图控制功率放大器的开关状态。Optionally, the apparatus further includes: a control module configured to control a switching state of the power amplifier according to the symbol energy saving bitmap.
可选地，所述第二处理模块，还设置为当所述需要节能的子帧不满足设置为MBSFN子帧格式的条件时，根据该子帧，确定符号节能位图。Optionally, the second processing module is further configured to: when the subframe that needs to be saved does not satisfy the condition that is set to the MBSFN subframe format, determine the symbol energy saving bitmap according to the subframe.
可选地，所述第二处理模块，是设置为通过如下方式实现根据MBSFN子帧的配置信息，确定符号节能位图包括：通过***消息SIB2通知终端MBSFN子帧的配置信息，并根据MBSFN子帧格式与常规循环前缀CP的时序对应关系确定符号节能位图。Optionally, the second processing module is configured to: according to the configuration information of the MBSFN subframe, the determining the symbol energy saving bitmap includes: notifying the configuration information of the terminal MBSFN subframe by using the system message SIB2, and according to the MBSFN sub- The symbol correspondence between the frame format and the regular cyclic prefix CP determines the symbol energy saving bitmap.
在本发明实施例中，当根据业务量判断满足节能条件时，确定需要节能的子帧；当需要节能的子帧满足设置为多播组播单频网络MBSFN子帧格式的条件时，将需要节能的子帧设置为MBSFN子帧格式；根据MBSFN子帧的配置信息，确定符号节能位图。如此，根据MBSFN子帧格式的特殊性进行符号关断，从而达到了更好的节能效果，进一步提升了符号节能效率。In the embodiment of the present invention, when the energy saving condition is determined according to the traffic volume, the subframe that needs to be saved is determined; when the subframe that needs to be saved meets the condition of the MBSFN subframe format set to the multicast multicast single frequency network, it will be required. The energy-saving subframe is set to the MBSFN subframe format; and the symbol energy saving bitmap is determined according to the configuration information of the MBSFN subframe. In this way, the symbol is turned off according to the particularity of the MBSFN subframe format, thereby achieving better energy saving effects and further improving the symbol energy saving efficiency.
在阅读并理解了附图和详细描述后，可以明白其他方面。 Other aspects will be apparent upon reading and understanding the drawings and detailed description.
附图概述BRIEF abstract
图1为相关技术中关闭符号关断功能的射频功率放大器的电源开关状态的示意图；1 is a schematic diagram of a power switch state of a radio frequency power amplifier that turns off a symbol turn-off function in the related art;
图2为相关技术中打开符号关断功能的射频功率放大器的电源开关状态的示意图；2 is a schematic diagram of a power switch state of a radio frequency power amplifier with a symbol turn-off function turned on in the related art;
图3为本发明实施例提供的LTE***的节能方法的流程图；FIG. 3 is a flowchart of an energy saving method of an LTE system according to an embodiment of the present invention;
图4为控制格式指示(CFI，Control Format Indicator)为2时常规CP的资源单元集合(REG)的MBSFN格式的示意图；4 is a schematic diagram of an MBSFN format of a resource unit set (REG) of a regular CP when a Control Format Indicator (CFI) is 2;
图5为本发明具体实施例提供LTE***的节能方法的流程图；FIG. 5 is a flowchart of a method for saving energy in an LTE system according to an embodiment of the present invention;
图6为本发明实施例提供的LTE***的节能装置组成模块图。FIG. 6 is a block diagram of an energy-saving device of an LTE system according to an embodiment of the present invention.
本发明的实施方式Embodiments of the invention
以下结合附图对本发明的实施例进行详细说明，应当理解，以下所说明的实施例仅用于说明和解释本发明，并不用于限定本发明。The embodiments of the present invention are described in detail below with reference to the accompanying drawings.
图3为本发明实施例提供的LTE***的节能方法的流程图。所述方法可应用但不限于远端射频模块RRU的功放单元。如图3所示，本实施例提供的LTE***的节能方法包括以下步骤：FIG. 3 is a flowchart of an energy saving method of an LTE system according to an embodiment of the present invention. The method can be applied, but is not limited to, a power amplifier unit of a remote radio frequency module RRU. As shown in FIG. 3, the energy saving method of the LTE system provided in this embodiment includes the following steps:
步骤11：当根据业务量判断满足节能条件时，确定需要节能的子帧。Step 11: When it is judged that the energy saving condition is satisfied according to the traffic volume, the subframe that needs to be saved is determined.
可选的，根据业务情况，当业务量低于阈值时，将用户数据集中在特定的子帧中，按一定统计周期的统计结果确定该子帧是否满足关闭条件。如果满足关闭条件，则关闭一个子帧；当业务量大于阈值，则开启一个子帧。Optionally, according to the service situation, when the traffic volume is lower than the threshold, the user data is concentrated in a specific subframe, and the statistical result of a certain statistical period determines whether the subframe satisfies the shutdown condition. If the shutdown condition is met, one subframe is closed; when the traffic is greater than the threshold, one subframe is turned on.
步骤12：当需要节能的子帧满足设置为多播组播单频网络(MBSFN)子帧格式的条件时，将所述需要节能的子帧设置为MBSFN子帧格式。Step 12: When the subframe that needs to be saved meets the condition of being set to the multicast multicast single frequency network (MBSFN) subframe format, the subframe that needs to be saved is set to the MBSFN subframe format.
其中，多播组播单频网络(MBSFN，Multimedia Broadcast multicast service Single Frequency Network)是LTE***中对广播多播业务的一种单频网技术，是指属于同一多媒体多播组播业务(MBMS，Multimedia Broadcast and Multicast Service)单频网(SFN，Single Frequency Network)的小区采用同一 频段同时发送MBMS业务数据，在接收端同时接收进行软合并。由于MBSFN的多播组播的业务特性，较大的小区半径和多小区信号的合并带来的时延扩展增加了无线信道的频率选择性。因此，MBSFN采用了特殊的子帧格式：MBSFN子帧。The Multicast Multicast Network (MBSF) is a single-frequency network technology for broadcasting multicast services in the LTE system, which refers to the same multimedia multicast service (MBMS, Multimedia Broadcast and Multicast Service) The single frequency network (SFN, Single Frequency Network) uses the same cell The frequency band simultaneously transmits MBMS service data, and is simultaneously received and soft-combined at the receiving end. Due to the service characteristics of multicast multicast of MBSFN, the delay spread caused by the combination of a larger cell radius and multi-cell signals increases the frequency selectivity of the wireless channel. Therefore, MBSFN uses a special subframe format: MBSFN subframe.
MBSFN采用的是扩展CP格式，因此，当子帧格式为常规CP时，MBSFN子帧格式有2部分，前一部分是非MBSFN域，后一部分是MBSFN域。当子帧0采用常规CP时，MBSFN子帧中的非MBSFN域要采用常规CP，而MBSFN域要采用扩展CP，为了保证子帧时序关系的对齐，需要进行特殊处理。当非MBSFN域占1个OFDM符号时，要在OFDM符号0和OFDM符号1之间补352个0；当非MBSFN域占2个OFDM符号时，要在OFDM符号1和OFDM符号2之间补720个0。图4为控制格式指示(CFI，Control Format Indicator)为2时常规CP的资源单元集合(REG)的MBSFN格式的示意图。如图4所示，MBSFN子帧中的第1和第2符号采用常规CP，并保留单播导频，可以用于PDCCH、PCFICH和PHICH等信道的传输。子帧中的其他符号用于MBSFN信号传输。The MBSFN adopts the extended CP format. Therefore, when the subframe format is a regular CP, the MBSFN subframe format has two parts, the former part is a non-MBSFN domain, and the latter part is an MBSFN domain. When the subframe 0 is a normal CP, the non-MBSFN domain in the MBSFN subframe is to use a regular CP, and the MBSFN domain is to use an extended CP. In order to ensure the alignment of the subframe timing relationship, special processing is required. When the non-MBSFN domain occupies 1 OFDM symbol, 352 0s are to be complemented between OFDM symbol 0 and OFDM symbol 1; when the non-MBSFN domain occupies 2 OFDM symbols, OFDM symbol 1 and OFDM symbol 2 are to be complemented 720 0. 4 is a schematic diagram of an MBSFN format of a Resource Unit Set (REG) of a regular CP when the Control Format Indicator (CFI) is 2. As shown in FIG. 4, the first and second symbols in the MBSFN subframe use a regular CP and retain unicast pilots, which can be used for transmission of channels such as PDCCH, PCFICH, and PHICH. Other symbols in the subframe are used for MBSFN signal transmission.
另外，当子帧格式为扩展CP时，前一部分是非MBSFN域，后一部分是MBSFN域。但是数据格式与扩展CP一致。In addition, when the subframe format is an extended CP, the former part is a non-MBSFN domain, and the latter part is an MBSFN domain. However, the data format is consistent with the extended CP.
其中，设置为MBSFN子帧格式的条件包括：CFI配置为等于1或2。The condition set to the MBSFN subframe format includes: the CFI is configured to be equal to 1 or 2.
可选的，由于MBSFN采用扩展CP的格式，且MBSFN的参考信号位于扩展CP的第3个符号，按MBSFN子帧结构分析，需要满足CFI＝1和CFI＝2时才能不影响MBSFN的参考信号位置，当CFI大于2时，由于MBSFN参考信号映射关系，不能将常规CP设置为MBSFN格式。Optionally, since the MBSFN adopts the format of the extended CP, and the reference signal of the MBSFN is located in the third symbol of the extended CP, and is analyzed according to the MBSFN subframe structure, the reference signal of the MBSFN is not affected when CFI=1 and CFI=2 are satisfied. Position, when the CFI is greater than 2, the regular CP cannot be set to the MBSFN format due to the MBSFN reference signal mapping relationship.
此外，对于频分双工(FDD，Frequency Division Duplexing)：One Frame bit5代表子帧1、bit4代表子帧2、bit3代表子帧3、bit2代表子帧6，bit1代表子帧7，bit0代表子帧8；对于时分双工(TDD，Time Division Duplexing)：One Frame bit5代表子帧3、bit4代表子帧4、bit3代表子帧7、bit2代表子帧8，bit1代表子帧9，bit0无效；对应bit位设置为1表示对应的子帧为MBSFN子帧，因此，子帧号需要遵循***消息SIB2中结构体参数mbsfn-SubframeConfigList中关于子帧号的配置。 In addition, for Frequency Division Duplexing (FDD): One Frame bit 5 represents subframe 1, bit 4 represents subframe 2, bit 3 represents subframe 3, bit 2 represents subframe 6, bit 1 represents subframe 7, and bit 0 represents a sub-frame. Frame 8; for Time Division Duplexing (TDD): One Frame bit 5 represents subframe 3, bit 4 represents subframe 4, bit 3 represents subframe 7, bit 2 represents subframe 8, bit 1 represents subframe 9, and bit 0 is invalid; Setting the corresponding bit to 1 indicates that the corresponding subframe is an MBSFN subframe. Therefore, the subframe number needs to follow the configuration of the subframe number in the structure parameter mbsfn-SubframeConfigList in the system message SIB2.
步骤13：根据MBSFN子帧的配置信息，确定符号节能位图。Step 13: Determine a symbol energy saving bitmap according to the configuration information of the MBSFN subframe.
于此，步骤13包括：通过***消息SIB2通知终端MBSFN子帧的配置信息，并根据MBSFN子帧格式与常规循环前缀CP的时序对应关系确定符号节能位图。Herein, the step 13 includes: notifying the configuration information of the terminal MBSFN subframe by the system message SIB2, and determining the symbol energy saving bitmap according to the timing correspondence between the MBSFN subframe format and the regular cyclic prefix CP.
于步骤13之后，该方法还包括：根据符号节能位图控制功率放大器的开关状态。After the step 13, the method further comprises: controlling the switching state of the power amplifier according to the symbol energy saving bitmap.
可选的，当满足配置为MBSFN子帧格式时，通知终端MBSFN子帧相关的配置信息。MBSFN子帧的配置信息位于***消息SIB2中mbsfn-SubframeConfigList字段，协议定义结构如下。Optionally, when the configuration is configured as an MBSFN subframe format, the configuration information related to the MBSFN subframe of the terminal is notified. The configuration information of the MBSFN subframe is located in the mbsfn-SubframeConfigList field in the system message SIB2, and the protocol definition structure is as follows.
Figure PCTCN2016086046-appb-000001
Figure PCTCN2016086046-appb-000001
节能配置为MBSFN子帧时，其位置是随业务量变化的，所以radioframeAllocationPeriod采用n1，radioframeAllocationOffset固定为0，并采用oneFrame，通知终端一个无线帧中的可设置为MBSFN子帧的情况。When the energy saving configuration is an MBSFN sub-frame, the location is changed according to the traffic volume. Therefore, the radioframeAllocationPeriod adopts n1, the radioframeAllocationOffset is fixed to 0, and oneFrame is used to notify the terminal that a radio frame can be set as an MBSFN sub-frame.
当通知终端MBSFN子帧位置信息后，基带部分对于子帧格式的符号级处理不需要发生变化，依然可以按常规CP进行符号处理，同时将射频模块的MBSFN格式与常规CP的时序对应关系得出符号节能位图。除了保留控制信道，MBSFN域对应的OFDM符号都设置为节能状态，射频功放根据符号节能位图关闭功率放大器，达到节能的目的。After notifying the terminal of the MBSFN subframe position information, the baseband part does not need to change the symbol level processing of the subframe format, and can still perform symbol processing according to the regular CP, and simultaneously obtain the timing relationship between the MBSFN format of the radio frequency module and the regular CP. Symbolic energy saving bitmap. In addition to the reserved control channel, the OFDM symbols corresponding to the MBSFN domain are set to the power saving state, and the RF power amplifier turns off the power amplifier according to the symbol energy saving bitmap to achieve the purpose of energy saving.
普通的子帧由于存在导频等符号，正常可以关断的符号个数是10个，当配置成MBSFN子帧时，最多可关断的符号个数达到13个，相较于普通子帧提升30％。如此，基于MBSFN的关断技术可以降低基站的能耗，并且经过实验接入和性能评估证实该技术对于网络和终端都无影响。The number of symbols that can be normally turned off is 10 when there are symbols such as pilots in normal subframes. When configured as MBSFN subframes, the maximum number of symbols that can be turned off is 13 compared to normal subframes. 30%. In this way, the MBSFN-based shutdown technology can reduce the power consumption of the base station, and the experimental access and performance evaluation proves that the technology has no impact on the network and the terminal.
于一实施例中，步骤12之后，该方法还包括：当需要节能的子帧不满足 设置为多播组播单频网络MBSFN子帧格式的条件时，根据该子帧，确定符号节能位图。In an embodiment, after step 12, the method further includes: when the subframe that needs to save energy is not satisfied When the condition of the MBSFN subframe format of the multicast multicast single frequency network is set, the symbol energy saving bitmap is determined according to the subframe.
图5为本发明具体实施例提供的LTE***的节能方法的流程图。以下参照图5分别举例说明具体实施例情况。FIG. 5 is a flowchart of an energy saving method of an LTE system according to an embodiment of the present invention. The specific embodiment will be exemplified below with reference to FIG. 5.
实施例一Embodiment 1
本实施例说明打开符号节能功能流程，其中，开启符号节能功能后流程开始。This embodiment describes the process of opening the symbol energy saving function, in which the process starts after the symbol energy saving function is turned on.
步骤S101：根据业务量判断是否满足子帧关闭条件，包括：当业务量低于阈值时，将用户数据集中在特定的子帧中，根据一定的统计周期统计的结果确定该子帧是否满足关闭条件；Step S101: determining whether the subframe closing condition is met according to the traffic volume, including: when the traffic volume is lower than the threshold, concentrating the user data in a specific subframe, and determining, according to a result of a certain statistical period, whether the subframe satisfies the shutdown. condition;
步骤S102：当不满足子帧关闭条件时，根据业务量判断是否满足子帧打开条件，包括：当业务量大于阈值时，则开启一个子帧；Step S102: When the subframe closing condition is not met, determining whether the subframe opening condition is met according to the traffic volume, including: when the traffic volume is greater than the threshold, starting a subframe;
其中，如果也不满足子帧打开条件，则到下个检测周期进入步骤S101进行循环判断。If the sub-frame open condition is not satisfied, the process proceeds to step S101 to perform loop determination in the next detection cycle.
实施例二Embodiment 2
本实施例说明普通符号节能流程，其中，预置条件为FDD CFI＝3，Normal CP，2天线，开启符号节能功能后流程开始。This embodiment describes a common symbol energy saving process, in which the preset condition is FDD CFI=3, Normal CP, 2 antennas, and the process starts after the symbol energy saving function is turned on.
步骤S101：根据业务量判断是否满足子帧关闭条件，若当前业务量较低，且满足子帧关闭条件，则执行步骤S201；Step S101: determining whether the subframe closing condition is met according to the traffic volume, if the current traffic volume is low, and the subframe closing condition is met, step S201 is performed;
步骤S201：计算关闭子帧位置，于此，按照子帧关闭顺序，首先关闭子帧8；Step S201: Calculating the closed subframe position, where the subframe 8 is first closed according to the subframe closing order;
步骤S301：判断子帧是否满足MBSFN节能条件，例如，CFI、关闭子帧号是否满足设置为MBSFN子帧的条件，于此，由于CFI大于2，因此，不满足设置为MBSFN子帧，执行步骤S401；Step S301: determining whether the subframe satisfies the MBSFN energy saving condition, for example, whether the CFI and the closed subframe number satisfy the condition that the MBSFN subframe is set. Therefore, since the CFI is greater than 2, the setting is not satisfied with the MBSFN subframe, and the step is performed. S401;
步骤S401：计算符号节能位图，Normal CP，2天线，节能位图计算结果为00010110111011，依次表示14个符号的节能状态，0表示不节能，1表示节能，将符号节能位图配置给功率放大器； Step S401: Calculate the symbol energy saving bitmap, Normal CP, 2 antenna, and the energy saving bitmap calculation result is 00010110111011, which sequentially indicates the energy saving state of 14 symbols, 0 means no energy saving, 1 means energy saving, and allocates the symbol energy saving bitmap to the power amplifier. ;
步骤S501：功率放大器根据符号节能位图控制功率放大器的开关状态进行节能。Step S501: The power amplifier controls the power state of the power amplifier according to the symbol energy saving bitmap to save energy.
实施例三Embodiment 3
本实施例说明MBSFN符号节能流程，其中，预置条件为FDD CFI＝2，Normal CP，2天线，开启符号节能功能后流程开始。This embodiment describes the MBSFN symbol energy saving process, in which the preset condition is FDD CFI=2, Normal CP, 2 antennas, and the process starts after the symbol energy saving function is turned on.
步骤S101：根据业务量判断是否满足子帧关闭条件，若当前业务量较低，且满足子帧关闭条件，则执行步骤S201；Step S101: determining whether the subframe closing condition is met according to the traffic volume, if the current traffic volume is low, and the subframe closing condition is met, step S201 is performed;
步骤S201：计算关闭子帧位置，按照子帧关闭顺序，目前已关闭子帧8，按照子帧关闭顺序，此次关闭子帧7；Step S201: calculating the closed subframe position, according to the subframe closing order, the subframe 8 is currently closed, according to the subframe closing order, the subframe 7 is closed this time;
步骤S301：判断子帧是否满足MBSFN节能条件，例如，判断CFI、关闭子帧号是否满足设置为MBSFN子帧的条件，由于CFI等于2，且子帧号满足条件，因此，该子帧可以设置为MBSFN子帧，之后，执行步骤S402；Step S301: determining whether the subframe satisfies the MBSFN energy saving condition, for example, determining whether the CFI, the closed subframe number meets the condition set as the MBSFN subframe, and since the CFI is equal to 2, and the subframe number satisfies the condition, the subframe can be set. Is an MBSFN subframe, after which step S402 is performed;
步骤S402：通过***消息SIB2将MBSFN子帧的配置信息下发给终端，终端收到广播的***消息SIB2后读取广播中MBSFN的配置信息；Step S402: The configuration information of the MBSFN subframe is sent to the terminal by using the system message SIB2, and the terminal reads the configuration information of the MBSFN in the broadcast after receiving the broadcast system message SIB2.
步骤S403：计算MBSFN子帧的符号节能位图，Normal CP，2天线，节能位图计算结果是00111111111111，依次表示14个符号的节能状态，0表示不节能，1表示节能，将符号节能位图配置给功率放大器；Step S403: Calculate the symbol energy saving bitmap of the MBSFN subframe, Normal CP, 2 antenna, and the energy saving bitmap calculation result is 00111111111111, which sequentially indicates the energy saving state of 14 symbols, 0 means no energy saving, 1 means energy saving, and symbol energy saving bitmap Configured to a power amplifier;
步骤S501：功率放大器根据符号节能位图控制功率放大器的开关状态进行节能。Step S501: The power amplifier controls the power state of the power amplifier according to the symbol energy saving bitmap to save energy.
实施例四Embodiment 4
本实施例说明MBSFN符号打开流程，其中，预置条件为FDD CFI＝2，Extend CP，4天线，子帧8、子帧7进行了MBSFN节能。This embodiment describes the MBSFN symbol opening procedure, in which the preset condition is FDD CFI=2, Extend CP, 4 antenna, subframe 8, and subframe 7 perform MBSFN energy saving.
步骤S101：根据业务量判断是否满足子帧关闭条件，若当前业务量较高，不满足子帧关闭条件，则执行步骤S102；Step S101: determining whether the subframe closing condition is met according to the traffic volume, if the current traffic volume is high, and the subframe closing condition is not met, step S102 is performed;
步骤S102：根据业务量判断是否满足子帧打开条件，当前业务量较高，满足子帧打开条件，则执行步骤S202；Step S102: judging whether the sub-frame open condition is met according to the traffic volume, the current traffic volume is high, and the sub-frame open condition is met, step S202 is performed;
步骤S202：计算打开子帧位置，按照子帧打开顺序，目前已关闭子帧8 和子帧7，按照子帧打开顺序，此次打开子帧7；Step S202: Calculate the position of the open subframe, and according to the order in which the subframe is opened, the subframe 8 is currently closed. And sub-frame 7, according to the sub-frame open order, this time open the sub-frame 7;
步骤S302：判断子帧7是否进行了MBSFN节能，即判断子帧7是否设置为MBSFN子帧，若是，则执行步骤S402；Step S302: determining whether the subframe 7 has performed MBSFN energy saving, that is, determining whether the subframe 7 is set to an MBSFN subframe, and if yes, executing step S402;
步骤S402：通过***消息SIB2将子帧7设置为普通子帧信息下发给终端，终端收到***消息SIB2后读取广播中MBSFN的配置信息；Step S402: The subframe 7 is set to the normal subframe information and sent to the terminal by using the system message SIB2. After receiving the system message SIB2, the terminal reads the configuration information of the MBSFN in the broadcast.
步骤S403：计算MBSFN子帧的符号节能位图，扩展CP，CFI为2，4天线，当前的节能位图为001111111111，依次表示12个符号的节能状态，0表示不节能，1表示节能，子帧7需要关闭节能，符号位图修改为000000000000，将符号节能位图配置给功率放大器；Step S403: Calculate the symbol energy saving bitmap of the MBSFN subframe, expand the CP, and the CFI is 2, 4 antennas. The current energy saving bitmap is 001111111111, which sequentially indicates the energy saving state of 12 symbols, 0 means no energy saving, 1 means energy saving, sub Frame 7 needs to be powered off, the symbol bitmap is modified to 000000000000, and the symbol energy saving bitmap is configured to the power amplifier;
步骤S501：功率放大器根据符号节能位图控制功率放大器的开关状态进行节能。Step S501: The power amplifier controls the power state of the power amplifier according to the symbol energy saving bitmap to save energy.
本发明实施例还提供了一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行上述方法。The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the above method.
此外，本发明实施例还提供一种LTE***的节能装置，如图6所示，包括：确定模块，设置为当根据业务量判断满足节能条件时，确定需要节能的子帧；第一处理模块，设置为当所述需要节能的子帧满足设置为MBSFN子帧格式的条件时，将所述需要节能的子帧设置为MBSFN子帧格式；第二处理模块，设置为根据MBSFN子帧的配置信息，确定符号节能位图。In addition, the embodiment of the present invention further provides an energy-saving device of an LTE system, as shown in FIG. 6, including: a determining module, configured to determine a subframe that needs to be saved when determining that the energy-saving condition is met according to the traffic volume; the first processing module And setting, when the subframe that needs to save energy meets the condition that is set to the MBSFN subframe format, setting the subframe that needs to save energy to an MBSFN subframe format; and the second processing module, configured to configure according to the MBSFN subframe. Information, determine the symbol energy saving bitmap.
其中，设置为MBSFN子帧格式的条件包括：控制格式指示CFI配置为等于1或2。The condition set to the MBSFN subframe format includes: the control format indicates that the CFI is configured to be equal to 1 or 2.
于一实施例中，上述装置还包括：控制模块，设置为根据所述符号节能位图控制功率放大器的开关状态。In an embodiment, the apparatus further includes: a control module configured to control a switching state of the power amplifier according to the symbol energy saving bitmap.
于一实施例中，第二处理模块，还设置为当所述需要节能的子帧不满足设置为MBSFN子帧格式的条件时，根据该子帧，确定符号节能位图。In an embodiment, the second processing module is further configured to determine a symbol energy saving bitmap according to the subframe when the subframe that needs to be saved does not satisfy the condition that is set to the MBSFN subframe format.
于一实施例中，第二处理模块，是设置为通过如下方式实现根据MBSFN子帧的配置信息，确定符号节能位图：通过***消息SIB2通知终端MBSFN 子帧的配置信息，并根据MBSFN子帧格式与常规循环前缀CP的时序对应关系确定符号节能位图。In an embodiment, the second processing module is configured to determine a symbol energy saving bitmap according to the configuration information of the MBSFN subframe by: notifying the terminal MBSFN by using the system message SIB2 The configuration information of the subframe, and determining the symbol energy saving bitmap according to the timing correspondence between the MBSFN subframe format and the regular cyclic prefix CP.
此外，上述装置的具体处理流程同上述方法所述，故于此不再赘述。In addition, the specific processing flow of the above device is the same as that described above, and thus will not be described herein.
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件(例如处理器)完成，所述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。相应地，上述实施例中的各模块/单元可以采用硬件的形式实现，例如通过集成电路来实现其相应功能，也可以采用软件功能模块的形式实现，例如通过处理器执行存储于存储器中的程序/指令来实现其相应功能。本发明不限制于任何特定形式的硬件和软件的结合。One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function. The invention is not limited to any specific form of combination of hardware and software.
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. The present invention is not limited by the above-described embodiments, and the above-described embodiments and the description are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention. And modifications are intended to fall within the scope of the invention as claimed.
工业实用性Industrial applicability
上述技术方案进一步提升了符号节能效率。 The above technical solution further improves the symbol energy saving efficiency.

Claims (10)

  1. 一种长期演进LTE***的节能方法，包括：An energy saving method for a long term evolution LTE system, including:
    当根据业务量判断满足节能条件时，确定需要节能的子帧；When it is judged that the energy saving condition is satisfied according to the traffic volume, the subframe that needs to be saved is determined;
    当所述需要节能的子帧满足设置为多播组播单频网络MBSFN子帧格式的条件时，将所述需要节能的子帧设置为MBSFN子帧格式；When the subframe that needs to be saved meets the condition of being set to the MBSFN subframe format of the multicast multicast single-frequency network, the subframe that needs to be saved is set to the MBSFN subframe format;
    根据MBSFN子帧的配置信息，确定符号节能位图。The symbol energy saving bitmap is determined according to the configuration information of the MBSFN subframe.
  2. 如权利要求1所述的方法，其中，所述设置为MBSFN子帧格式的条件包括：The method of claim 1, wherein the condition set to the MBSFN subframe format comprises:
    控制格式指示CFI配置为等于1或2。The control format indicates that the CFI is configured to be equal to 1 or 2.
  3. 如权利要求1所述的方法，还包括：The method of claim 1 further comprising:
    所述根据MBSFN子帧的配置信息，确定符号节能位图之后，根据所述符号节能位图控制功率放大器的开关状态。After determining the symbol energy saving bitmap according to the configuration information of the MBSFN subframe, the switching state of the power amplifier is controlled according to the symbol energy saving bitmap.
  4. 如权利要求1所述的方法，还包括：The method of claim 1 further comprising:
    所述当根据业务量判断满足节能条件时，确定需要节能的子帧之后，当所述需要节能的子帧不满足设置为MBSFN子帧格式的条件时，根据该子帧，确定符号节能位图。When the energy saving condition is determined according to the traffic volume, after determining the subframe that needs to be saved, when the subframe that needs to be saved does not satisfy the condition set to the MBSFN subframe format, determining the symbol energy saving bitmap according to the subframe .
  5. 如权利要求1所述的方法，其中，所述根据MBSFN子帧的配置信息，确定符号节能位图包括：The method of claim 1, wherein the determining the symbol energy saving bitmap according to the configuration information of the MBSFN subframe comprises:
    通过***消息SIB2通知终端MBSFN子帧的配置信息，并根据MBSFN子帧格式与常规循环前缀CP的时序对应关系确定符号节能位图。The configuration information of the terminal MBSFN subframe is notified by the system message SIB2, and the symbol energy saving bitmap is determined according to the timing correspondence relationship between the MBSFN subframe format and the regular cyclic prefix CP.
  6. 一种长期演进LTE***的节能装置，包括：An energy-saving device for a long-term evolution LTE system, comprising:
    确定模块，设置为当根据业务量判断满足节能条件时，确定需要节能的子帧；Determining a module, configured to determine a subframe that needs to be saved when the energy saving condition is satisfied according to the traffic volume;
    第一处理模块，设置为当所述需要节能的子帧满足设置为多播组播单频网络MBSFN子帧格式的条件时，将所述需要节能的子帧设置为MBSFN子帧格式；The first processing module is configured to set the subframe that needs to be saved to an MBSFN subframe format, when the subframe that needs to be saved meets the condition that the MBSFN subframe format is set to be the multicast multicast single-frequency network;
    第二处理模块，设置为根据MBSFN子帧的配置信息，确定符号节能位 图。a second processing module, configured to determine a symbol save bit according to configuration information of the MBSFN subframe Figure.
  7. 如权利要求6所述的装置，其中，所述设置为MBSFN子帧格式的条件包括：The apparatus of claim 6, wherein the condition set to the MBSFN subframe format comprises:
    控制格式指示CFI配置为等于1或2。The control format indicates that the CFI is configured to be equal to 1 or 2.
  8. 如权利要求6所述的装置，还包括：The apparatus of claim 6 further comprising:
    控制模块，设置为根据所述符号节能位图控制功率放大器的开关状态。And a control module configured to control a switching state of the power amplifier according to the symbol energy saving bitmap.
  9. 如权利要求6所述的装置，The device of claim 6
    所述第二处理模块，还设置为当所述需要节能的子帧不满足设置为MBSFN子帧格式的条件时，根据该子帧，确定符号节能位图。The second processing module is further configured to determine a symbol energy saving bitmap according to the subframe when the subframe that needs to be saved does not satisfy the condition set to the MBSFN subframe format.
  10. 如权利要求6所述的装置，其中，The apparatus of claim 6 wherein
    所述第二处理模块，是设置为通过如下方式实现根据MBSFN子帧的配置信息，确定符号节能位图：通过***消息SIB2通知终端MBSFN子帧的配置信息，并根据MBSFN子帧格式与常规循环前缀CP的时序对应关系确定符号节能位图。 The second processing module is configured to: determine, according to the configuration information of the MBSFN subframe, the symbol energy saving bitmap: notify the configuration information of the terminal MBSFN subframe by using the system message SIB2, and according to the MBSFN subframe format and the regular loop The timing correspondence of the prefix CP determines the symbol energy saving bitmap.
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CN104272799A (en) * 2012-05-11 2015-01-07 爱立信(中国)通信有限公司 Method and apparatus for energy saving
CN104618995A (en) * 2015-01-08 2015-05-13 大唐移动通信设备有限公司 Symbol turn-off processing method and equipment

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CN112189362A (en) * 2018-06-20 2021-01-05 华为技术有限公司 Symbol processing method and related equipment
US20210105658A1 (en) * 2018-06-20 2021-04-08 Huawei Technologies Co., Ltd. Symbol processing method and related device
EP3799484A4 (en) * 2018-06-20 2021-06-16 Huawei Technologies Co., Ltd. Symbol processing method and related device
US11800399B2 (en) 2018-06-20 2023-10-24 Huawei Technologies Co., Ltd. Symbol processing method and related device
WO2021164612A1 (en) * 2020-02-17 2021-08-26 华为技术有限公司 Service transmission method and apparatus
CN113438719A (en) * 2021-06-23 2021-09-24 中国联合网络通信集团有限公司 Energy-saving method and device and readable storage medium
CN117177343A (en) * 2023-09-22 2023-12-05 白盒子(上海)微电子科技有限公司 Symbol turn-off and symbol turn-on system

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