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WO2017041301A1 - Procédé et appareil de transmission d'informations - Google Patents

Procédé et appareil de transmission d'informations Download PDF

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Publication number
WO2017041301A1
WO2017041301A1 PCT/CN2015/089460 CN2015089460W WO2017041301A1 WO 2017041301 A1 WO2017041301 A1 WO 2017041301A1 CN 2015089460 W CN2015089460 W CN 2015089460W WO 2017041301 A1 WO2017041301 A1 WO 2017041301A1
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WO
WIPO (PCT)
Prior art keywords
coverage level
time
pcfich
pdcch
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/089460
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English (en)
Chinese (zh)
Inventor
李强
冯淑兰
刘劲楠
吴毅凌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201580065527.5A priority Critical patent/CN107005992A/zh
Priority to PCT/CN2015/089460 priority patent/WO2017041301A1/fr
Publication of WO2017041301A1 publication Critical patent/WO2017041301A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an information transmission method and apparatus.
  • the sender of the communication in the Internet of Things is "thing" rather than “person.”
  • smart meter reading or monitoring information uploading is usually used to upload the packets sent and received in the Internet of Things.
  • the packets sent and received in the Internet of Things are relatively small and are not sensitive to delay.
  • the environment in which IoT terminals are located is generally more difficult than wireless Internet terminals such as smart phones.
  • many smart meter reading terminal devices are located in the basement or underground environment, and the wireless communication environment is Ordinary mobile phones are much worse. Therefore, the design of the communication system of the Internet of Things should consider such a poor coverage, while at the same time balancing the requirements of low cost and low power consumption.
  • the path loss condition of different terminal devices to the base station in the cell is usually very large.
  • the terminal devices in the cell are divided into different coverage levels according to the path loss. For example, it can be divided into four coverage levels, and the terminal device with a small path loss is divided into level 1; the slightly worse is divided into level 2; and the worst is divided into level 4.
  • PDCCH Physical Downlink Control Channel
  • different modulation and coding rate and resource block size are adopted according to the coverage level of the terminal device. For the terminal equipment with large path loss, a lower modulation and coding rate is adopted to ensure the reliability of transmission; and for a terminal device with a small path loss, a higher modulation and coding rate is adopted to improve the transmission efficiency.
  • a terminal device In order to receive the PDCCH, a terminal device first needs to know the location of the PDCCH of the coverage level to which it belongs, and then finds the PDCCH transmitted to itself from the inside. In order to raise capital For the utilization of the source, the base station can re-divide the time-frequency resources of different coverage levels at intervals, and notify the terminal devices in the cell after re-division.
  • Time-frequency resources of different coverage levels cannot be flexibly allocated. Moreover, due to the modulation and coding rate of each coverage level, the occupied resources are fixed, and the number of terminal devices of different coverage levels are also different, which causes waste of time-frequency resources.
  • the embodiment of the invention provides an information transmission method and device.
  • the technical solution is as follows:
  • an information transmission apparatus including:
  • a receiving module configured to receive a physical control format indication channel PCFICH, where the PCFICH carries time-frequency resource information of each coverage level in a PDCCH region;
  • a determining module configured to determine time-frequency resource information of a PDCCH of its own coverage level according to physical downlink control channel PDCCH region configuration information and time-frequency resource information of each coverage level received by the receiving module in a PDCCH region;
  • the receiving module is further configured to receive the PDCCH of the self coverage level on a time-frequency resource location indicated by the time-frequency resource information determined by the determining module.
  • the configuration information of the PCFICH is carried by a broadcast channel PBCH.
  • the PDCCH region configuration information is carried by using a PBCH.
  • the PDCCH region configuration information includes at least one of the following information: the PDCCH region time-frequency resource location information; or the number of coverage levels included in the PDCCH region; Or, the transmission parameters of the respective coverage levels PDCCH.
  • the PDCCH region time-frequency resource location information includes at least one of the following information: a subcarrier start position of the PDCCH region; or, The number of subcarriers of the PDCCH region; or the time domain start location of the PDCCH region; or the number of persistent time slots of the PDCCH region in the time domain.
  • the transmission parameter of each coverage level PDCCH includes at least one of the following information: a modulation mode of the PDCCH of each coverage level; or a PDCCH of each coverage level Coded code rate; or the number of repetitions of the PDCCH of each coverage level.
  • the each coverage level is divided into a first specified coverage level and a second specified coverage level; the first specified coverage level is a coverage level of receiving the PCFICH; The coverage level is specified to not receive the coverage level of the PCFICH.
  • the configuration information of the PCFICH includes at least one of the following information: a transmission parameter of the PCFICH; or a time-frequency resource location information of the PCFICH; or The coverage level number of a specified coverage level; or the coverage level number belonging to the second specified coverage level.
  • the coverage level of the first specified coverage level is pre-configured; and/or the coverage level of the second specified coverage level is pre-configured.
  • the determining module is further configured to determine, according to the pre-configured resource configuration information, a time-frequency resource of a PDCCH to which the coverage level belongs according to the pre-configured resource configuration information.
  • Information ; or,
  • the receiving module is configured to receive a reference signal sequence
  • the device further includes: a detecting module, configured to detect, according to the second specified coverage level, the reference signal sequence received by the receiving module;
  • the determining module is further configured to determine time-frequency resource information of the PDCCH of the coverage level to which the detection module belongs according to the reference signal sequence detected by the detecting module.
  • the pre-configured resource configuration information includes at least one of: a subcarrier starting position of an coverage level to which the level belongs; or, a number of subcarriers; or a time domain starting location Or, the number of consecutive time slots on the time domain; or, the number of PDCCHs.
  • the determining module is further configured to determine, according to the reference signal sequence detected by the detecting module, the correspondence between the pre-configured reference signal sequence and the PDCCH resource Resource allocation information of the PDCCH of the coverage level; when the PDCCH of the coverage level is determined in combination with the arrangement pattern of the coverage level in the PDCCH region configured in advance, the PDCCH region configuration information, and the resource configuration information of the PDCCH of the self coverage level Frequency resource information.
  • the time-frequency resource information of the coverage level in the PDCCH area includes: time-frequency resource location information occupied by a coverage level that belongs to the first specified coverage level, and belongs to the second Specify at least one of time-frequency resource location information occupied by the coverage level of the coverage level.
  • the determining module is further configured to determine, according to the first specified coverage level, that the coverage level is received in the PDCCH area according to the coverage level received by the receiving module.
  • the time-frequency resource information and the PDCCH region configuration information determining remaining time-frequency resource information that is not occupied by the coverage level other than the self-coverage level in the PDCCH region, and time-frequency resource information occupied by the first specified coverage level .
  • the transmission parameter of the PCFICH includes at least one of: a modulation mode of the PCFICH; or an encoding code rate of the PCFICH; or, the PCFICH repeat times.
  • the time-frequency resource location information of the PCFICH includes at least one of the following information: a subcarrier start position of the PCFICH; or a number of subcarriers of the PCFICH; Or, the time domain start position of the PCFICH; or the number of persistent time slots of the PCFICH in the time domain.
  • the receiving module is configured to receive a PCFICH on multiple consecutive subframes
  • the determining module is further configured to determine PDCCH region configuration information on the same subframe according to the time-frequency resource information carried by the PCFICH on the multiple consecutive subframes received by the receiving module.
  • the time domain start position of the PCFICH is the first time slot of each subframe.
  • the number of persistent time slots of the PCFICH in the time domain is determined by a frequency reuse factor.
  • the transmission parameter of the PCFICH is determined by a frequency reuse factor.
  • the number of subcarriers of the PCFICH includes all subcarriers in a cell; or the PCFICH and the PDCCH region use the same subcarrier.
  • the time-frequency resource information of each coverage level in the PDCCH region includes at least one of the following:
  • the PDCCH of each coverage level occupies a bitmap of resources.
  • each coverage level adopts a time domain priority arrangement manner in the PDCCH region; or, each coverage level adopts a frequency domain priority arrangement manner in the PDCCH region; or Different coverage levels are located in different time slots of the PDCCH region; or different coverage levels are located in the same time slot of the PDCCH region.
  • the highest coverage level is ranked first in the PDCCH region; or the lowest coverage level is ranked first in the PDCCH region.
  • an information transmission method including:
  • PCFICH Physical control format indication channel
  • Time-frequency resources in the PDCCH region according to PDCCH region configuration information and respective coverage levels Information, determining time-frequency resource information of a PDCCH of its own coverage level;
  • the configuration information of the PCFICH is carried by the broadcast channel PBCH.
  • the PDCCH region configuration information is carried by using a PBCH.
  • the PDCCH region configuration information includes at least one of the following information:
  • Time-frequency resource location information of the PDCCH region
  • the number of coverage levels included in the PDCCH region or,
  • the PDCCH region time-frequency resource location information includes at least one of the following information:
  • the number of subcarriers of the PDCCH region is the number of subcarriers of the PDCCH region.
  • the number of consecutive time slots of the PDCCH region in the time domain is the number of consecutive time slots of the PDCCH region in the time domain.
  • the transmission parameter of each coverage level PDCCH includes at least one of the following information:
  • the number of repetitions of the PDCCH of each coverage level is the number of repetitions of the PDCCH of each coverage level.
  • each coverage level is divided into a first specified coverage level and a second specified coverage level
  • the first specified coverage level is a coverage level of receiving the PCFICH
  • the second specified coverage level is a coverage level that does not receive the PCFICH.
  • the configuration information of the PCFICH includes at least one of the following information:
  • the coverage level number belonging to the first specified coverage level or
  • the coverage level number belonging to the second specified coverage level is the coverage level number belonging to the second specified coverage level.
  • the coverage level that belongs to the first specified coverage level is pre-configured; and/or the coverage level that belongs to the second specified coverage level is pre-configured.
  • determining time-frequency resource information of the PDCCH to which the coverage level belongs is determined according to the pre-configured resource configuration information
  • the reference signal sequence is detected, and the time-frequency resource information of the PDCCH to which the coverage level belongs is determined.
  • the pre-configured resource configuration information includes at least one of the following:
  • the starting position of the subcarrier of the coverage level to which it belongs or,
  • the number of PDCCHs is the number of PDCCHs.
  • the reference signal sequence is detected, and time-frequency resource information of the PDCCH of the coverage level to which the user belongs is determined, including,
  • the time-frequency resource information of the PDCCH of the own coverage level is determined by combining the coverage level arrangement manner in the PDCCH region, the PDCCH region configuration information, and the resource configuration information of the PDCCH of the self-coverage level in the pre-configured PDCCH region.
  • the time-frequency resource information of the coverage level in the PDCCH area includes: time-frequency resource location information occupied by a coverage level that belongs to the first specified coverage level, and belongs to each And at least one of the time-frequency resource location information occupied by the coverage level of the specified coverage level.
  • the determining, according to the physical downlink control channel PDCCH region configuration information and the time-frequency resource information of each coverage level in the PDCCH region, the time-frequency resource information of the PDCCH of the self-coverage level includes:
  • the transmission parameter of the PCFICH includes at least one of the following information:
  • the time-frequency resource location information of the PCFICH includes at least one of the following information:
  • the subcarrier starting position of the PCFICH or,
  • the number of consecutive time slots of the PCFICH in the time domain is the number of consecutive time slots of the PCFICH in the time domain.
  • the method further includes: according to the received The time-frequency resource information carried by the PCFICH on the plurality of consecutive subframes determines the PDCCH region configuration information on the same subframe.
  • the time domain start position of the PCFICH is the first time slot of each subframe.
  • the number of consecutive time slots of the PCFICH in the time domain is determined by a frequency reuse factor.
  • the transmission parameter of the PCFICH is determined by a frequency reuse factor.
  • the number of subcarriers of the PCFICH includes all subcarriers in a cell; or the PCFICH and the PDCCH region use the same subcarrier.
  • the time-frequency resource information of each coverage level in the PDCCH region includes at least one of the following:
  • the PDCCH of each coverage level occupies a bitmap of resources.
  • each coverage level adopts a time domain priority arrangement manner in the PDCCH region
  • Each coverage level adopts a frequency domain priority allocation manner in the PDCCH region
  • Different coverage levels are located in different time slots of the PDCCH region.
  • Different coverage levels are located in the same time slot of the PDCCH region.
  • the highest coverage level is ranked first in the PDCCH region.
  • the lowest coverage level is ranked first in the PDCCH region.
  • an information transmission apparatus including:
  • a receiving module configured to receive a physical layer control signaling format indication channel PCFICH, where the PCFICH carries physical downlink control channel EPDCCH region configuration information;
  • a determining module configured to determine time-frequency resource information of the EPDCCH of the self-coverage level according to the EPDCCH region configuration information, if the self-coverage level belongs to the third specified coverage level;
  • the receiving module is further configured to receive the physical downlink control channel PDCCH of the self-coverage level on the time-frequency resource indicated by the time-frequency resource information of the EPDCCH determined by the determining module.
  • the determining module is further configured to: if the self coverage level belongs to a fourth specified coverage level, according to the PDCCH area configuration information and the pre-configured fourth coverage level, each coverage level
  • the time-frequency resource information in the PDCCH region determines time-frequency resource information of the PDCCH of the self-coverage level.
  • the time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH area is pre-configured.
  • the time-frequency resource information in the PDCCH region of each coverage level of the fourth specified coverage level is carried by the broadcast channel PBCH.
  • the configuration information of the PCFICH is carried by the PBCH.
  • the EPDCCH region configuration information includes:
  • Time-frequency resource information of the EPDCCH of each coverage level in the third specified coverage level in the even subframe
  • the number of PDCCH code blocks occupied by the EPDCCH of each coverage level in the third specified coverage level is occupied.
  • the PCFICH includes multiple fields, where a first field is used to indicate each coverage level in the third specified coverage level, and remaining fields are used to indicate the third specified coverage level. Time-frequency resource information for each coverage level.
  • the determining module is configured to: according to the EPDCCH region configuration information that is received by the receiving module, from the time-frequency resources occupied by the EPDCCH indicated by the EPDCCH region configuration information, The time-frequency resources occupied by the PDCCH, the PCFICH, and the PBCH are excluded, and the remaining time-frequency resources are obtained. In the remaining time-frequency resources, the time-frequency resource information of the EPDCCH of the self-coverage level is determined.
  • an information transmission method including:
  • PCFICH Physical layer control signaling format indication channel
  • EPDCCH region configuration information
  • the method further includes:
  • each coverage level according to the physical downlink control channel PDCCH region configuration information and the pre-configured fourth specified coverage level is The time-frequency resource information in the PDCCH region determines time-frequency resource information of the PDCCH of the self-coverage level.
  • the time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH area is pre-configured.
  • the time-frequency resource information in the PDCCH region of each of the fourth specified coverage levels is carried by the broadcast channel PBCH.
  • the configuration information of the PCFICH is carried by the PBCH.
  • the EPDCCH region configuration information includes:
  • Time-frequency resource information of the EPDCCH of each coverage level in the third specified coverage level in the even subframe
  • the number of PDCCH code blocks occupied by the EPDCCH of each coverage level in the third specified coverage level is occupied.
  • the PCFICH includes multiple fields, where a first field is used to indicate each coverage level in the third specified coverage level, and the remaining fields are used to indicate the Time-frequency resource information of each coverage level in the third specified coverage level.
  • the determining, according to the EPDCCH region configuration information, the time-frequency resource information of the EPDCCH of the self-coverage level includes:
  • time-frequency resource information of the EPDCCH of the self-coverage level is determined.
  • an information transmission apparatus including:
  • a sending module configured to send a physical control format indication channel PCFICH, where the PCFICH carries time-frequency resource information of each coverage level in the PDCCH region.
  • the configuration information of the PCFICH is carried by the broadcast channel PBCH.
  • the PDCCH region configuration information is carried by using a PBCH.
  • the PDCCH region configuration information includes at least one of the following information:
  • Time-frequency resource location information of the PDCCH region
  • the number of coverage levels included in the PDCCH region or,
  • the PDCCH region time-frequency resource location information includes at least one of the following information:
  • the number of subcarriers of the PDCCH region is the number of subcarriers of the PDCCH region.
  • the number of consecutive time slots of the PDCCH region in the time domain is the number of consecutive time slots of the PDCCH region in the time domain.
  • the transmission parameter of each coverage level PDCCH includes at least one of the following information:
  • the number of repetitions of the PDCCH of each coverage level is the number of repetitions of the PDCCH of each coverage level.
  • each coverage level is divided into a first specified coverage level and a second specified coverage level
  • the first specified coverage level is a coverage level of receiving the PCFICH
  • the second specified coverage level is a coverage level that does not receive the PCFICH.
  • the configuration information of the PCFICH includes at least one of the following information:
  • the coverage level number belonging to the first specified coverage level or
  • the coverage level number belonging to the second specified coverage level is the coverage level number belonging to the second specified coverage level.
  • the coverage level that belongs to the first specified coverage level is pre-configured; and/or the coverage level that belongs to the second specified coverage level is pre-configured.
  • the time-frequency resource information of the coverage level in the PDCCH area includes: time-frequency resource location information occupied by a coverage level that belongs to the first specified coverage level, and belongs to the second Specify at least one of time-frequency resource location information occupied by the coverage level of the coverage level.
  • the transmission parameter of the PCFICH includes at least one of the following information:
  • the time-frequency resource location information of the PCFICH includes at least one of the following information:
  • the subcarrier starting position of the PCFICH or,
  • the number of consecutive time slots of the PCFICH in the time domain is the number of consecutive time slots of the PCFICH in the time domain.
  • the sending module is configured to send the PCFICH on multiple consecutive subframes, where time-frequency resource information carried by the PCFICH on the multiple consecutive subframes is used to indicate the same PDCCH region configuration information on subframes.
  • the time domain start position of the PCFICH is the first time slot of each subframe.
  • the number of consecutive time slots of the PCFICH in the time domain is determined by a frequency reuse factor.
  • the transmission parameter of the PCFICH is determined by a frequency reuse factor.
  • the number of subcarriers of the PCFICH includes all subcarriers in a cell; or the PCFICH and the PDCCH region use the same subcarrier.
  • the time-frequency resource information of each coverage level in the PDCCH region includes at least one of the following:
  • the PDCCH of each coverage level occupies a bitmap of resources.
  • each coverage level adopts a time domain priority arrangement manner in the PDCCH area
  • Each coverage level adopts a frequency domain priority allocation manner in the PDCCH region
  • Different coverage levels are located in different time slots of the PDCCH region.
  • Different coverage levels are located in the same time slot of the PDCCH region.
  • the highest coverage level is ranked first in the PDCCH region.
  • the lowest coverage level is ranked first in the PDCCH region.
  • an information transmission method including:
  • the physical control format indication channel PCFICH is transmitted, and the PCFICH carries time-frequency resource information of each coverage level in the PDCCH region.
  • the configuration information of the PCFICH is carried by a broadcast channel PBCH.
  • the PDCCH region configuration information is carried by using a PBCH.
  • the PDCCH region configuration information includes at least one of the following information:
  • Time-frequency resource location information of the PDCCH region
  • the number of coverage levels included in the PDCCH region or,
  • the PDCCH region time-frequency resource location information includes at least one of the following information:
  • the number of subcarriers of the PDCCH region is the number of subcarriers of the PDCCH region.
  • the number of consecutive time slots of the PDCCH region in the time domain is the number of consecutive time slots of the PDCCH region in the time domain.
  • the transmission parameter of each coverage level PDCCH includes at least one of the following information:
  • the number of repetitions of the PDCCH of each coverage level is the number of repetitions of the PDCCH of each coverage level.
  • each coverage level is divided into a first specified coverage level and a second specified coverage level
  • the first specified coverage level is a coverage level of receiving the PCFICH
  • the second specified coverage level is a coverage level that does not receive the PCFICH.
  • the configuration information of the PCFICH includes at least one of the following information:
  • the coverage level number belonging to the first specified coverage level or
  • the coverage level number belonging to the second specified coverage level is the coverage level number belonging to the second specified coverage level.
  • the coverage level belonging to the first specified coverage level is pre-configured; and/or the coverage level belonging to the second specified coverage level is pre-configured.
  • the time-frequency resource information of the coverage level in the PDCCH area includes: time-frequency resource location information occupied by a coverage level that belongs to the first specified coverage level, and belongs to each And at least one of the time-frequency resource location information occupied by the coverage level of the specified coverage level.
  • the transmission parameter of the PCFICH includes at least one of the following information:
  • the time-frequency resource location information of the PCFICH includes at least one of the following information:
  • the subcarrier starting position of the PCFICH or,
  • the number of consecutive time slots of the PCFICH in the time domain is the number of consecutive time slots of the PCFICH in the time domain.
  • the sending the physical control format indication channel PCFICH includes:
  • the PCFICH is sent on a plurality of consecutive subframes, and time-frequency resource information carried by the PCFICH on the plurality of consecutive subframes is used to indicate PDCCH region configuration information on the same subframe.
  • the time domain start position of the PCFICH is the first time slot of each subframe.
  • the number of consecutive time slots of the PCFICH in the time domain is determined by a frequency reuse factor.
  • the transmission parameter of the PCFICH is determined by a frequency reuse factor.
  • the number of subcarriers of the PCFICH includes all subcarriers in a cell; or the PCFICH and the PDCCH region use the same subcarrier.
  • the time-frequency resource information of each coverage level in the PDCCH region includes at least one of the following:
  • the PDCCH of each coverage level occupies a bitmap of resources.
  • each coverage level adopts a time domain priority arrangement manner in the PDCCH region
  • Each coverage level adopts a frequency domain priority allocation manner in the PDCCH region
  • Different coverage levels are located in different time slots of the PDCCH region.
  • Different coverage levels are located in the same time slot of the PDCCH region.
  • the highest coverage level is ranked first in the PDCCH region.
  • the lowest coverage level is ranked first in the PDCCH region.
  • an information transmission apparatus including:
  • a sending module configured to send a physical layer control signaling format indication channel PCFICH, where the PCFICH carries physical downlink control channel EPDCCH region configuration information, where the EPDCCH region carries a third specified coverage level PDCCH.
  • the time-frequency resource information in the PDCCH region of each coverage level of the fourth specified coverage level is pre-configured.
  • the time-frequency resource information in the PDCCH region of each of the fourth specified coverage levels is carried by the broadcast channel PBCH.
  • the configuration information of the PCFICH is carried by using a PBCH.
  • the EPDCCH region configuration information includes:
  • Time-frequency resource information of the EPDCCH of each coverage level in the third specified coverage level in the even subframe
  • the number of PDCCH code blocks occupied by the EPDCCH of each coverage level in the third specified coverage level is occupied.
  • the PCFICH includes multiple fields, where a first field is used to indicate each coverage level in the third specified coverage level, and remaining fields are used to indicate the third specified coverage level. Time-frequency resource information for each coverage level.
  • an information transmission method including:
  • the physical layer control signaling format indication channel PCFICH is transmitted, the PCFICH carries the physical downlink control channel EPDCCH region configuration information, and the EPDCCH region carries the PDCCH of the third specified coverage level.
  • the time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH region is pre-configured.
  • the time-frequency resource information in the PDCCH region of each of the fourth specified coverage levels is carried by the broadcast channel PBCH.
  • the configuration information of the PCFICH is carried by the PBCH.
  • the EPDCCH region configuration information includes:
  • Time-frequency resource information of the EPDCCH of each coverage level in the third specified coverage level in the even subframe
  • the number of PDCCH code blocks occupied by the EPDCCH of each coverage level in the third specified coverage level is occupied.
  • the PCFICH includes multiple fields, where a first field is used to indicate each coverage level in the third specified coverage level, and remaining fields are used to indicate the third specified coverage level. Time-frequency resource information for each coverage level.
  • the technical solution provided by the embodiment of the present invention is to implement the time-frequency resource by carrying the time-frequency resource information of each coverage level in the PDCCH region by using the PCFICH (Physical Control Format Indicator Channel).
  • PCFICH Physical Control Format Indicator Channel
  • FIG. 1 is a schematic diagram of an implementation scenario according to an embodiment of the present invention.
  • 2A is a schematic diagram of time-frequency resource allocation of a downlink signal of a frame
  • 2B is a schematic diagram of partitioning of each subframe
  • FIG. 3 is a flowchart of an information transmission method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a time-frequency resource used by a PCFICH according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another time-frequency resource used by the PCFICH according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of still another time-frequency resource used by the PCFICH according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a PDCCH arrangement manner according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of another PDCCH arrangement manner according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of still another PDCCH arrangement manner according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of still another PDCCH arrangement manner according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram of still another PDCCH arrangement manner according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram of a reference signal sequence according to an embodiment of the present invention.
  • FIG. 13 is a flowchart of an information transmission method according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention.
  • 16 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention.
  • 17 is a flowchart of an information transmission method according to an embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention.
  • FIG. 19 is a flowchart of an information transmission method according to an embodiment of the present invention.
  • FIG. 20 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 21 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • Such as current 2G, 3G communication systems and next generation communication systems such as Global System for Mobile Communications (the techniques described herein can be used in various communication systems, eg GSM, Global System for Mobile communications), Code Division Multiple Access (CDMA, Code Division) Multiple Access) system, Time Division Multiple Access (TDMA) system, Wideband Code Division Multiple Access (WCDMA), Frequency Division Multiple Access (FDMA), Frequency Division Multiple Addressing (FDMA) system, orthogonal OFDM (Orthogonal Frequency-Division Multiple Access) system, single carrier FDMA (SC-FDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE) system And other such communication systems.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • FDMA Frequency Division Multiple Addressing
  • OFDM Orthogonal OFDM (Orthogonal Frequency-Division Multiple Access)
  • the terminal device can be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device that is connected to the wireless modem.
  • the terminal device can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), and the terminal device can be a mobile terminal, such as a mobile phone (or "cellular" phone) and has a mobile terminal
  • a radio access network eg, RAN, Radio Access Network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • the terminal device may also be referred to as a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL wireless local loop
  • PDA Personal Digital Assistant
  • the terminal device may also be referred to as a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • a base station can refer to a device in an access network that communicates with a terminal device over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the terminal device and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. This application is not limited.
  • the core network node device can be applied to different communication network systems, including but not limited to SAE (System Architecture Evolved)/LTE (Long Term Evolved) network.
  • UMTS Universal Mobile Telecommunications System
  • CDMA Code Division Mutiple Access
  • the core network node device includes, but is not limited to, a mobility management entity MME, a Serving GPRS Support Node (SGSN), or The Mobile Switching Center (MSC) is not limited herein.
  • the core network node device may be an MME, and the wireless access node device may be an eNB; for a UMTS network, the core network node device may be an SGSN or an MSC, and the wireless access node device It can be RNC or nodeB.
  • the core network node device may be an MME, and the wireless access node device may be an eNB; for a UMTS network, the core network node device may be an SGSN or an MSC, and the wireless access node device It can be RNC or nodeB.
  • RNC nodeB
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 is a schematic diagram of an implementation scenario according to an embodiment of the present invention.
  • the implementation scenario includes a base station and a terminal device, and the terminal device may be any terminal device with communication capability in the Internet of Things, such as a smart meter, a smart water meter, or the like.
  • the embodiment of the present invention can also be applied to other application scenarios of terminal devices that are in different coverage levels, which are not specifically limited in this embodiment of the present invention.
  • 2A is a schematic diagram of time-frequency resource allocation of a downlink signal of a frame.
  • a frame is divided into 8 subframes.
  • Each subframe is divided into 32 slots.
  • 15 subcarriers are included.
  • the last slot of each subframe is used to transmit a PSCH (Physical Shared Channel).
  • the PBCH Physical Broadcast Channel
  • PDCCH Physical Downlink Control Channel
  • the PDCCH occupies part of the subcarriers (for example, 8).
  • the PDCCH occupies all slots except the PSCH.
  • the modulation scheme of the PDCCH transmitted by each coverage level and the encoding code rate are different from the time-frequency resources occupied by each PDCCH packet.
  • the coverage level with low path loss uses high-order modulation and coding rate, and uses less resources.
  • the coverage level with large path loss uses low-order modulation and coding rate, and uses more resources.
  • the terminal device is divided into four coverage levels as an example, as shown in Table 1 below.
  • FIG. 3 is a flowchart of an information transmission method according to an embodiment of the present invention. Referring to Figure 3, this embodiment includes:
  • PCFICH Physical control format indication channel
  • the PDCCH region configuration information refers to time-frequency resource information occupied by the PDCCH region, so that the terminal device performs reception according to the PDCCH region configuration information.
  • time-frequency resource information of each coverage level in the PDCCH region includes any one of the following information:
  • the resource of each coverage level and the resource of the previous coverage level are continuous in the time domain or in the frequency domain, so that the starting position of the current coverage level can be determined according to the length of the previous coverage level.
  • the terminal device may receive the PDCCH, so as to perform transmission based on the scheduling information and feedback information indicated by the PDCCH in the subsequent information transmission process.
  • the method provided by the embodiment of the present invention can implement the flexible setting of the time-frequency resource information by using the PCFICH to carry the time-frequency resource information of each coverage level in the PDCCH region, thereby avoiding resource waste caused by inflexibility of the base station division. .
  • the configuration information of the PCFICH is carried by the broadcast channel PBCH. That is, the method further includes: receiving a broadcast channel PBCH, the PBCH carrying configuration information of the PCFICH.
  • the PCFICH occupies a certain time-frequency resource. Therefore, the terminal device can determine the resource location of the PCFICH by using the configuration information of the PCFICH carried by the PBCH, thereby determining which resources the base station sends the PCFICH on, and receiving the PCFICH on the resources.
  • the time-frequency resources occupied by the PCFICH may also be pre-configured.
  • the configuration information of the PCFICH may be pre-configured so that it is not required to be acquired from the PBCH.
  • the PCFICH is configured A part of the information may be pre-configured and does not need to be obtained from the PBCH; and the PBCH may carry other parts of the configuration information of the PCFICH, so that the terminal device obtains part of the configuration information according to the pre-configured part and the PBCH. Determine the time-frequency resources used by the PCFICH.
  • the configuration information of the PCFICH includes at least one of the following information (1) and (2) and (3):
  • the transmission parameter of the PCFICH includes at least one of the following information (1.1 to 1.3):
  • the modulation method of the PCFICH such as a modulation scheme such as BPSK, QPSK or 16QAM.
  • the coding rate of the PCFICH, the code rate may be a value of 1/2 or 1/3, and the specific values of the embodiment of the present invention are not limited.
  • the number of repetitions may refer to the number of repetitions of the PCFICH in transmission, and the number of repetitions may be a value of 1 or 2. That is, the terminal device can determine the PDCCH region configuration information in the same subframe according to the time-frequency resource information carried by the PCFICH on the received multiple consecutive subframes.
  • the PCFICH may be transmitted only in odd subframes, and the PCFICH is sent only in odd subframes, and is sent once every 2 subframes. At this time, the number of repetitions is 1. Further, in order to improve the transmission quality, the PCFICH may be sent in each subframe, and the information sent by the PCFICH in the two adjacent subframes is the same.
  • the two PCFICHs together indicate the configuration information of the PDCCH, and the number of repetitions is 2. As shown in FIG. 4, the PCFICH is transmitted in both subframes 2N and 2N+1, and the number of repetitions is 2.
  • the PCFICH time-frequency resource location information includes at least one of the following information: a subcarrier starting position of the PCFICH; or, a number of subcarriers of the PCFICH; or, a time domain starting location of the PCFICH, Which time slot the PCFICH starts from; or, the number of consecutive time slots of the PCFICH in the time domain refers to how many time slots the PCFICH continues.
  • the coverage level is divided into a first specified coverage level and a second specified coverage level; the first specified coverage level is a coverage level for receiving the PCFICH; and the second specified coverage level is a coverage level for not receiving the PCFICH.
  • the coverage level terminal devices need to receive the PCFICH, and some MSs of some coverage levels may have poor performance, and the performance of receiving the PCFICH may be poor, so only the MS of the partial coverage level needs to be received.
  • the terminal device may determine whether to receive the PCFICH according to the coverage level and the number indicated in the configuration information, if the coverage level of the user belongs to the first If the coverage level is specified or does not belong to the second specified coverage level, the receiving process is performed, and if the own coverage level does not belong to the first specified coverage level or belongs to the second specified coverage level, the receiving process is not performed.
  • the configuration information carries the number of the first specified coverage level or the number of the second specified coverage level, which is not specifically limited in the embodiment of the present invention.
  • the coverage level belonging to the first specified coverage level is pre-configured; and/or the coverage level belonging to the second specified coverage level is pre-configured.
  • the terminal device may determine whether to receive the PCFICH and how to obtain the time-frequency resource information of the PDCCH of the own coverage level according to the level of the coverage level of the terminal device in the receiving process, and improve the Flexibility in resource setup.
  • the configuration information of the PCFICH is sent by the base station in the PBCH, so that the terminal device receives the PCFICH.
  • the following may also be used:
  • the first type of PCFICH configuration information may include only the number of persistent time slots of the PCFICH.
  • the transmission parameters of the PCFICH can be determined by the frequency reuse factor of the system. For example, if the frequency reuse factor of the system is 1, BPSK modulation is adopted, 1/2 code rate, and the repetition number is 1. If the frequency reuse factor of the system is 3, QPSK modulation, 1/3 code rate, repetition number is adopted. Is 2.
  • the information of the PCFICH may also be pre-configured, and the terminal device may receive the PCFICH according to the pre-agreed location information.
  • the PCFICH start position is always the first slot slot of each subframe.
  • the starting positions of the PCFICHs on the two consecutive subframes are different, for example, in the subframe 2N, the starting position of the PCFICH is the 5th slot, and in the subframe 2N+1, the starting position of the PCFICH It is the 1st slot.
  • the number of subcarriers used by the PCFICH may be pre-configured to include all subcarriers in the cell. In both cases, the number of repetitions can be pre-configured to be 1 or 2.
  • the PCFICH and the PDCCH region may be reserved in advance to use the same subcarrier, as shown in FIG. 6.
  • the PDCCH area configuration information is carried by the PBCH. That is, the method further includes: receiving a broadcast channel PBCH, the PBCH carrying the PDCCH region configuration information.
  • the PDCCH region configuration information may also be pre-configured, so that it is not necessary to acquire PDCCH region configuration information from the PBCH.
  • the PBCH may carry at least one of PDCCH region configuration information and PCFICH configuration information.
  • the PCFICH configuration information may be pre-configured, and when carrying the PCFICH configuration information, The PDCCH region configuration information may be pre-configured. Neither can be carried, so that the PCFICH configuration information and the PDCCH region configuration information are both pre-configured.
  • the PDCCH region configuration information includes at least one of the following information (1) to (3):
  • the time-frequency resource location information of the PDCCH region refers to the specific time and frequency of the PDCCH region. Source location. Further, the PDCCH region time-frequency resource location information includes at least one of the following information (1.1) to (1.4):
  • the number of the subcarriers may be a value of 4, 8, or 12, and the specific values are not limited in the embodiment of the present invention.
  • the number of consecutive time slots of the PDCCH region in the time domain may be a value of 10, 30, or 31.
  • the specific values of the embodiments of the present invention are not limited.
  • the number of coverage levels included in the PDCCH region can be 3, 4, etc.
  • the transmission parameters of the respective coverage level PDCCHs include at least one of the following information: modulation modes of the PDCCHs of the respective coverage levels, such as BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase) Shift Keying, Quadrature Phase Shift Keying, or 16QAM (Quadrature Amplitude Modulation) modulation mode; or the coding rate of the PDCCH of each coverage level, the code rate may be 1/2 or 1
  • modulation modes of the PDCCHs of the respective coverage levels such as BPSK (Binary Phase Shift Keying), QPSK (Quadrature Phase) Shift Keying, Quadrature Phase Shift Keying, or 16QAM (Quadrature Amplitude Modulation) modulation mode
  • the coding rate of the PDCCH of each coverage level the code rate may be 1/2 or 1
  • the value of the _3 is not limited to the specific value of the embodiment of the present invention; or the number of repetitions of the PDCCH
  • the BS determines the number of PDCCHs of each coverage level that the subframe needs to be transmitted, and then places the PDCCH according to the frequency domain priority or the time domain priority order.
  • the PDCCHs are placed in the order of the coverage level, and the PDCCH with a low coverage level may be placed first and then the PDCCH with a high coverage level may be placed, or vice versa.
  • There is a certain advantage in placing the PDCCH with a higher coverage level at the forefront because the PDCCH with a higher coverage level occupies more resources, and if it is placed at the forefront, it is convenient for the system to optimize resource allocation.
  • the occupied resources of the different coverage levels in the PDCCH region may be allocated according to the distribution of the terminal devices that need to be scheduled, instead of being fixed.
  • Base station based on current needs Scheduling the distribution of the terminal devices of different coverage levels, determining the number of PDCCHs of each coverage level to be transmitted, and then arranging the PDCCHs, and the arrangement may be in the order of frequency domain priority or time domain priority, and is arranged.
  • the arrangement may be arranged in the order of the highest level of the coverage level, and may be arranged in the order of the coverage level from low to high, which is not specifically limited in the embodiment of the present invention.
  • the PCFICH is arranged in the first time slot and occupies all subcarriers.
  • the PCFICH can be in other forms as described above.
  • the subcarrier starting position of the PDCCH region is a subcarrier numbered 0, the number of subcarriers is 12 subcarriers, the starting position of the time domain is slot1, and the number of persistent slots is 30 slots.
  • the PDCCH region may be in other forms as described above.
  • the first type of arrangement and each coverage level adopt a time domain priority arrangement in the PDCCH area.
  • the time-frequency resources occupied by the PDCCHs of each coverage level are as shown in Table 1.
  • Coverage level 1 2 3 4 Time-frequency resources 4 (subcarrier) x1 (time slot) 4x3 4x2 4x23
  • the PDCCH is arranged from the time domain start position slot1, and is arranged from the highest to the bottom according to the coverage level.
  • the PDCCH of the coverage level 4 is arranged, and thereafter, the coverage level 3, the coverage level 2, and the coverage level 1 are arranged.
  • the number of PDCCHs of each coverage level can be carried in the PCFICH, and the terminal device can calculate the time-frequency resource location used by each coverage level according to the number of PDCCHs.
  • the PCFICH may indicate that the number of PDCCHs for each coverage level is [2, 5, 4, 5], that is, there are 2 coverage level 4, 5 coverage level 3, and 4 coverage level 3, coverage. There are 5 levels 1.
  • the terminal device can calculate the time-frequency resource start position and the time-frequency resource end position of the PDCCH of each coverage level.
  • the number of consecutive time slots for each coverage level may also be notified in the PCFICH, Thereby, the time-frequency resource occupied by the PDCCH of each coverage level is calculated.
  • the PCFICH may indicate that the number of consecutive slots of the PDCCH for each coverage level is [46, 10, 12, 5], that is, the coverage level 4 occupies 46 slots, the coverage level 3 occupies 10 slots, and the coverage level 2 occupies With 12 slots, coverage level 1 occupies 5 slots.
  • the terminal device can calculate the time-frequency resource start position and the time-frequency resource end position of the PDCCH of each coverage level.
  • the second arrangement mode and each coverage level adopt a frequency domain priority arrangement manner in the PDCCH region.
  • the time-frequency resources occupied by the PDCCHs of each coverage level are as shown in Table 2.
  • the PDCCH is arranged from the subcarriers whose frequency domain start position number is 0, and is arranged according to the coverage level from the high to the bottom, and the coverage level 4 is first arranged, and thereafter is the coverage level 3, the coverage level 2 and Cover level 1.
  • the number of time-frequency resources of each coverage level can be carried in the PCFICH, and the terminal device can calculate the time-frequency resource location occupied by each coverage level.
  • the PCFICH may indicate the number of PDCCHs per coverage level [2, 5, 4, 5], that is, there are 2 coverage level 4, 5 coverage level 3, and 4 coverage level 3, coverage level 1 There are five.
  • the terminal device can calculate the time-frequency start position and the time-frequency end position of each coverage level.
  • the number of persistent subcarriers of each coverage level may also be notified in the PCFICH, and the time-frequency resources occupied by the PDCCH of each coverage level may also be calculated.
  • the PCFICH may indicate that the number of persistent subcarriers of each coverage level PDCCH is [184, 40, 48, 30], that is, the coverage level 4 occupies 184 subcarriers, and the coverage level 3 occupies 40 subcarriers, and the coverage level 2 Occupying 48 subcarriers, coverage level 1 occupies 30 subcarriers.
  • the terminal device can also determine the time-frequency resource location actually occupied by the PDCCH of each coverage level.
  • the same time slot that can be located in the PDCCH region with different coverage levels is taken as an example. Referring to FIG. 8 , it can be seen that in the slot slot 16 The PDCCH of the coverage level 4 occupies only 4 subcarriers, and 8 subcarriers remain, and the remaining 8 subcarriers can be used for the PDCCH of the coverage level 3.
  • the third arrangement mode and different coverage levels are located in different time slots of the PDCCH region.
  • FIG. 8 is an example in which the same time slot can be used for different coverage levels, and in the third arrangement mode, different coverage levels can use different time slots of the PDCCH region. Still taking slot 16 as an example, referring to FIG. 9, the PDCCH covering level 4 only occupies 4 subcarriers, and 8 subcarriers remain. In this arrangement, coverage level 3 no longer uses the remaining subcarriers, but The slot 17 starts to be arranged. This has the advantage that different coverage levels can be distinguished directly in the PCFICH by indicating the slot.
  • the information carried by the PCFICH may be [16, 4, 4, 2], indicating that the PDCCH of the coverage level 4 occupies 16 slots, the PDCCH of the coverage level 3 occupies 4 slots, and the PDCCH of the coverage level 2 occupies 4 slots. Slot, the PDCCH covering level 1 occupies 2 slots.
  • some coverage levels indicate the number of PDCCHs, and the remaining coverage levels indicate the number of consecutive slots/subcarriers.
  • the coverage level 4 has two PDCCHs and occupies 16 slots. If the binary representation is 2, only 2 bits are required, and the representation 16 requires 4 bits. Therefore, when the PCFICH indicates the coverage level 4, the PDCCH number can be used for indication.
  • PCFICH indicates that the coverage level 1 can indicate the number of slots.
  • the information of PCFICH is [2, 4, 4, 2].
  • the first 2 points refer to coverage level 4 with 2 PDCCHs, and the remaining 3 bits, 4, 4, 2, represent the remaining 3 coverage levels occupying 4, 4, 2 slots respectively.
  • the present invention provides a first designated coverage level and a second specified coverage level to indicate which coverage level terminal devices need to receive the PCFICH, and which coverage level terminal devices do not receive the PCFICH.
  • the information may indicate that the terminal device covering level 4 does not need to receive the PCFICH.
  • the division of the first specified coverage level and the second specified coverage level may also be pre-configured.
  • the present invention provides two solutions.
  • the first solution if the self-coverage level belongs to the second specified coverage level, determines the time-frequency resource information of the PDCCH of the coverage level to which the coverage belongs according to the pre-configured resource configuration information.
  • the resource configuration information of the agreement includes at least one of the following:
  • the time domain start position of the coverage level 4 may be pre-configured to be the first slot immediately after the PCFICH. , as in slot 1 in FIG. 10, and the size of each PDCCH is 4x 23 (subcarrier x slot). The positions of the three PDCCHs are pre-configured.
  • the terminal device covering level 4 does not need to receive the PCFICH, but directly goes to the pre-configured area to receive the PDCCH transmitted to itself.
  • the time-frequency resource information in the PDCCH region includes at least one of time-frequency resource location information occupied by the coverage level of the first specified coverage level and time-frequency resource location information occupied by the coverage level of each of the second specified coverage levels.
  • the resource configuration information of each coverage level may also be included, such as: the starting time domain location of each coverage level and the number of persistent time slots in the time domain; or the starting frequency domain location of each coverage level.
  • a continuous frequency domain length in the frequency domain or a number of consecutive time slots of the PDCCH of each coverage level in the time domain; or a continuous frequency domain length of the PDCCH of each coverage level in the frequency domain; or a number of PDCCHs of the respective coverage levels; or a bit map of resources occupied by the PDCCHs of the respective coverage levels.
  • the step 301 "determining the time-frequency resource information of the PDCCH of the self-coverage level according to the physical downlink control channel PDCCH region configuration information and the time-frequency resource information of each coverage level in the PDCCH region" includes: if the self-coverage level belongs to the first Determining the coverage level, determining the remaining time-frequency resource information of the other coverage level and the time-frequency resource information occupied by the first specified coverage level according to the time-frequency resource information that is occupied by the other coverage levels and the PDCCH area configuration information. .
  • the terminal device of the coverage level 4 is configured with the time-frequency resources of the three PDCCHs in advance, in the actual scheduling, only two PDCCHs with the coverage level of 4 need to be transmitted, occupying the agreed candidate positions 1 and 3.
  • the time-frequency resource candidate position2 originally allocated to the coverage level 4 is not actually used, so that it can be allocated to PDCCHs of other coverage levels.
  • all PDCCH resources that are actually allocated to the coverage level 4 are treated as one resource pool, and then PDCCHs of different coverage levels are sequentially arranged in a frequency domain priority or a time priority manner.
  • the base station transmits resource allocation information of each coverage level in the PCFICH. For example, it can be [1 0 1/0 1 1/1 1 0/1 1], that is, divided into 4 regions, the first region (ie "1 0 1") for coverage level 4, through bit mapping The way to inform the terminal device which pre-configured resources are occupied.
  • the implementation has agreed to three positions candidate position 1, 2, 3. The actual use of positions 1 and 3, so "1 0 1" means that the 1 and 3 positions are used.
  • the remaining resources are allocated to coverage, etc.
  • the second area in the PCFICH ie "0 1 1"
  • coverage level 3 which is actually represented by a binary number.
  • This coverage level has 3 PDCCHs; the 3rd and the 1st of PCFICH
  • the four regions also tell the MS how many PDCCHs each of levels 2 and 1 are by binary number.
  • the terminal device of the coverage level 1-3 after receiving the PCFICH, it may first determine, by using the first region, which time-frequency resources the PDCCH of the coverage level 4 occupies. Then, according to the arrangement order and the number of PDCCHs of each coverage level, the time-frequency resource location occupied by the coverage level is calculated.
  • the terminal device of the coverage level 4 For the terminal device of the coverage level 4, if the user of the coverage level 4 does not receive the PCFICH, it can be pre-configured, and the time domain start position of the coverage level 4 is the first slot immediately after the PCFICH (slot1 in this example). The number of slots occupied is 16. Thus, even if the PCFICH is not received, the terminal device can know the area occupied by the PDCCH of the present coverage level. If the coverage level uses less than the pre-configured time-frequency resources in one subframe, the time-frequency resources may be allocated to the PDCCHs of other coverage levels.
  • the coverage level 4 area is 16 slots, but only one coverage level 4 PDCCH is actually transmitted, that is, 8 slots are used, then 8 unused slots can be allocated to the terminal devices of the coverage level 1-3. Use it.
  • the terminal device covering level 1-3 can learn the actual resource allocation information in the PCIFCH.
  • the second solution if the coverage level of the self belongs to the second specified coverage level, detects the reference signal sequence, and determines the time-frequency resource information of the PDCCH to which the coverage level belongs. Specifically, according to the detected reference signal sequence, the resource configuration information of the PDCCH of the coverage level to which the self belongs is obtained from the correspondence between the reference signal sequence and the PDCCH resource; and the arrangement manner of the coverage level in the PDCCH region, the PDCCH The time-frequency resource information of the area and the resource configuration information of the PDCCH of the self-coverage level determine the time-frequency resource information of the PDCCH of the own coverage level.
  • the signal transmitted by the base station is divided into a data signal and a reference signal.
  • the reference signal is used for channel estimation and demodulation.
  • some information may be carried by the reference signal.
  • the sequence of generating the reference signal may be sequence 1 or sequence 2.
  • the sequence 1 and the sequence 2 may be correlated with the received reference signal to determine the transmission of the base station. Is sequence 1 or sequence 2, so that the implicit information carried by the reference signal can be determined by the sequence used by the reference signal.
  • a slot consists of 17 OFDM symbols and 15 subcarriers in the frequency domain.
  • the base station and the terminal device are pre-configured, and in the position of the reference signal of the first half, two sequences may be transmitted, for example, it is possible to transmit the sequence s1(n) or the sequence s2(n), and the reference signal position of the second half is It is possible to either transmit the sequence v1(n) or the sequence v2(n). In this way, the terminal device side can perform a correlation operation on the received signal to determine the sequence actually transmitted.
  • the base station can inform the terminal device of the time-frequency resource information of the PDCCH of a certain coverage level by using the sequence.
  • the terminal device side can maintain a mapping relationship table (for example, as shown in Table 3), where the correspondence between the sequence and the PDCCH number of the coverage level is included in the table, and only the coverage level is 4 as an example.
  • the terminal equipment of the coverage level 4 does not receive the PCFICH, and the terminal equipment of the coverage level 4 can detect the reference signal sequence on one or more slots, and determine what the base station uses. Sequence combination. Then, according to the mapping relationship table, the number of PDCCHs of the coverage level 4 in the current subframe is determined. Thus, in combination with the arrangement method, it can be determined which resources are used in the coverage level 4.
  • the reliability of the detected sequence by the reference signal is higher than that of the PCFICH. Even if the transmission condition is poor, the correct time-frequency resource information can be obtained by reference signal detection. interest.
  • FIG. 13 is a flowchart of an information transmission method according to an embodiment of the present invention. Referring to Figure 13, the embodiment includes:
  • PCFICH Physical layer control signaling format indication channel
  • the third specified coverage level refers to an coverage level of the PDCCH transmitted using the EPDCCH.
  • the physical downlink control channel PDCCH of the self-coverage level is received on the time-frequency resource indicated by the determined time-frequency resource information of the EPDCCH.
  • the area for transmitting control information is divided into two parts: a PDCCH area and an EPDCCH (Extended PDCCH) area.
  • the PDCCH region may be the same as the PDCCH region described in the foregoing embodiment. Different from the prior art, this embodiment introduces an EPDCCH region, which is a resource outside the PDCCH region. When a PDCCH of a certain coverage level is not accommodated in the PDCCH region, it will be placed in the EPDCCH region for transmission.
  • the embodiment of the present invention further provides a fourth specified coverage level, where the fourth specified coverage level refers to a coverage level of the PDCCH region, and for the terminal device of the fourth specified coverage level, The method further includes: if the self-coverage level belongs to the fourth specified coverage level, determining the time-frequency resource information in the PDCCH region according to the physical downlink control channel PDCCH region configuration information and the pre-configured fourth specified coverage level The time-frequency resource information of the PDCCH whose own coverage level is described.
  • the time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH area is pre-configured. If PDCCHs of different coverage levels are transmitted in the divided area, the MS of each coverage level only needs to receive the PDCCH area in advance.
  • the fourth specified coverage level is in the PDCCH area.
  • the time-frequency resource information is carried by the broadcast channel PBCH, that is, the method further includes: receiving a broadcast channel PBCH, where the PBCH carries time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH region .
  • the broadcast channel PBCH carries time-frequency resource information of different coverage level PDCCHs, and the time-frequency resource information includes information such as the number of sub-carriers, the number of slots, the encoding, the rate, and the number of repetitions, and includes different coverage levels.
  • PDCCH resource division information since the number of PDCCHs per subframe may be different, some pre-divided coverage level resources may not accommodate the number of PDCCHs currently required to be transmitted, which requires that these PDCCHs be placed in the EPDCCH region for transmission.
  • the base station may indicate EPDCCH region configuration information, that is, resource allocation of the EPDCCH, through the PCFICH.
  • the method before determining the time-frequency resource information of the EPDCCH of the self-coverage level according to the physical downlink control channel EPDCCH region configuration information, the method further includes: receiving a PBCH, where the PBCH carries configuration information of the PCFICH.
  • the terminal device may receive the PCFICH according to the configuration information of the PCFICH carried by the PBCH, so as to obtain the EPDCCH region configuration information carried by the PCFICH.
  • the EPDCCH region is also divided into different coverage levels, and the PDCCH of the corresponding coverage level transmitted in each coverage level EPDCCH resource.
  • the EPDCCH region configuration information includes time-frequency resource information of an EPDCCH of each coverage level in the third specified coverage level in an even subframe, or an EPDCCH of each coverage level in the third specified coverage level.
  • a starting time domain location and a number of persistent time slots in the time domain or an initial frequency domain location of the EPDCCH of each coverage level in the third specified coverage level and a continuous frequency domain length in the frequency domain; or The number of consecutive time slots in the time domain of the EPDCCH of each coverage level in the third specified coverage level; or the continuous frequency domain length of the EPDCCH in each of the third specified coverage levels in the frequency domain; or The time slot occupancy of the EPDCCH of each coverage level in the third specified coverage level; or the number of PDCCH code blocks occupied by the EPDCCH of each coverage level in the third specified coverage level.
  • the EPDCCH region can be used to transmit a partial coverage level PDCCH.
  • the EPDCCH region is used to transmit a partial coverage level PDCCH in the cell; this is because most of the time, Only a portion of the coverage level of the PDCCH region resources is insufficient (but not all). Therefore, in order to save information carried in the PCFICH channel, only EPDCCHs of these coverage levels may be indicated.
  • the third designated coverage level and the fourth specified coverage level may also be the same, that is, the EPDCCH region is used to transmit PDCCHs of all coverage levels in the cell.
  • the PCFICH may only indicate an EPDCCH region corresponding to a PDCCH code block with a partial coverage level. That is, the PCFICH may include multiple fields, the first field is used to indicate each coverage level in the third specified coverage level, and the remaining fields are used to indicate the time frequency of each coverage level in the third specified coverage level. Resource information. For example, if the system is divided into 4 coverage levels, but only needs to indicate EPDCCH resource allocation of 2 coverage levels, the information may be indicated by the PCFICH in the following manner.
  • the information carried by the PCFICH is divided into three fields, the first field is used to indicate which two coverage levels are indicated, and the second field is used to indicate the time-frequency resource information of the EPDCCH indicated by the first coverage level.
  • the third field is used to indicate time-frequency resource information of the EPDCCH of the indicated second coverage level.
  • the PCFICH indicates two types of coverage levels, and the carrying information is [4, 2, 1], wherein the first field indicates which coverage levels are included in the EPDCCH region, and the mapping method in Table 4 is adopted.
  • the first field is set to 4, and the corresponding coverage level is 2 and 4.
  • the latter two fields indicate the number of time-frequency resources of the EPDCCH occupied by the coverage level 2 and the coverage level 4.
  • the second field "2" represents that the coverage level 2 uses 2 slots of EPDCCH (or two PDCCHs are transmitted), and the third field "1" indicates the coverage of the EPDCCH resource used by level 4.
  • the determining the time-frequency resource information of the EPDCCH of the self-coverage level according to the physical downlink control channel EPDCCH region configuration information includes:
  • the time-frequency resources occupied by the PDCCH, the PCFICH, and the PBCH are excluded from the time-frequency resources occupied by the EPDCCH indicated by the EPDCCH region configuration information, and the remaining time-frequency resources are obtained;
  • time-frequency resource information of the EPDCCH of the self-coverage level is determined.
  • the actual transmission of the EPDCCH region is still a PDCCH code block. Therefore, the EPDCCH region configuration information carried by the PCFICH may be used to indicate the specific allocation of the EPDCCH.
  • the starting position of the EPDCCH may be the first slot in the even subframe that is not occupied by the PCFICH and the PBCH.
  • the PCFICH indicates that the time slot can be represented (the time is preferentially placed, the number of occupied subcarriers on the frequency can be the same as the PDCCH or semi-statically configured by the PBCH), for example, [0, 1, 0, 2] can be expressed as CC4
  • CC3 has one 1-slot EPDCCH region
  • CC2 has no EPDCCH region
  • CC1 has two slot EPDCCH regions.
  • the PCFICH indicates the PDCCH region information, which may also indicate the number of PDCCHs.
  • [0, 1, 0, 2] may be expressed as CC4 has no EPDCCH extended region, and CC3 has EPDCCH region with 1 PDCCH resource. CC2 has no EPDCCH area, CC1 There are two PDCCH resources in the EPDCCH region. Or only a high coverage level uses the number of PDCCH code blocks, and a low level is indicated by the number of time slots.
  • the above embodiment reduces the dynamic range of the length of each coverage level required by the PCFICH by reducing the EPDCCH region configuration information for indicating the third specified coverage level in the PCFICH. Further, the PCFICH can be transmitted in a more robust manner, that is, the lower data rate in the same time-frequency resource carries the EPDCCH channel information, thereby improving the transmission efficiency.
  • the PDSCH Physical Downlink Shared Channel
  • the PDSCH Physical Downlink Shared Channel
  • FIG. 14 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention.
  • the apparatus includes:
  • the receiving module 1401 is configured to receive a physical control format indication channel PCFICH, where the PCFICH carries time-frequency resource information of each coverage level in the PDCCH region;
  • the determining module 1402 is configured to determine time-frequency resource information of the PDCCH of the self-coverage level according to the physical downlink control channel PDCCH region configuration information and the time-frequency resource information of each coverage level received by the receiving module in the PDCCH region;
  • the receiving module 1401 is further configured to receive, according to the time-frequency resource location indicated by the time-frequency resource information determined by the determining module, the PDCCH of the self-coverage level.
  • the configuration information of the PCFICH is carried by the broadcast channel PBCH.
  • the PDCCH region configuration information is carried by the PBCH.
  • the PDCCH region configuration information includes at least one of the following information:
  • Time-frequency resource location information of the PDCCH region
  • the number of coverage levels included in the PDCCH region or,
  • the PDCCH region time-frequency resource location information includes at least one of the following information:
  • the number of subcarriers of the PDCCH region is the number of subcarriers of the PDCCH region.
  • the number of consecutive time slots of the PDCCH region in the time domain is the number of consecutive time slots of the PDCCH region in the time domain.
  • the transmission parameters of the respective coverage level PDCCHs include at least one of the following information:
  • the number of repetitions of the PDCCH of each coverage level is the number of repetitions of the PDCCH of each coverage level.
  • the respective coverage levels are divided into a first specified coverage level and a second specified coverage level;
  • the first specified coverage level is a coverage level of receiving the PCFICH
  • the second specified coverage level is a coverage level that does not receive the PCFICH.
  • the configuration information of the PCFICH includes at least one of the following information:
  • the coverage level number belonging to the first specified coverage level or
  • the coverage level number belonging to the second specified coverage level is the coverage level number belonging to the second specified coverage level.
  • the coverage level of the first specified coverage level is pre-configured; and/or the coverage level of the second specified coverage level is pre-configured.
  • the determining module is further configured to determine, according to the pre-configured resource configuration information, the time-frequency resource information of the PDCCH to which the coverage level belongs according to the pre-configured resource configuration information; or
  • the receiving module is configured to receive a reference signal sequence
  • the device further includes: a detecting module, configured to detect, according to the second specified coverage level, the reference signal sequence received by the receiving module;
  • the determining module is further configured to determine, according to the reference signal sequence detected by the detecting module, Time-frequency resource information of the PDCCH of the coverage level.
  • the pre-configured resource configuration information includes at least one of the following:
  • the starting position of the subcarrier of the coverage level to which it belongs or,
  • the number of PDCCHs is the number of PDCCHs.
  • the determining module is further configured to determine, according to the reference signal sequence detected by the detecting module, a resource configuration of a PDCCH of the coverage level to which the self belongs to, from a correspondence between a pre-configured reference signal sequence and a PDCCH resource.
  • the information is used to determine the time-frequency resource information of the PDCCH of its own coverage level in combination with the arrangement pattern of the coverage level in the pre-configured PDCCH region, the PDCCH region configuration information, and the resource configuration information of the PDCCH of the self-coverage level.
  • the time-frequency resource information of the coverage level in the PDCCH area includes: time-frequency resource location information occupied by a coverage level that belongs to the first specified coverage level, and a coverage level that belongs to the second specified coverage level. At least one of the occupied time-frequency resource location information.
  • the determining module is further configured to: if it is determined that the self-coverage level belongs to the first specified coverage level, according to the time-frequency resource information of the respective coverage levels in the PDCCH region received by the receiving module, and the The PDCCH region configuration information is used to determine remaining time-frequency resource information that is not occupied by the coverage level other than the self-coverage level in the PDCCH region, and time-frequency resource information that is occupied by the first specified coverage level.
  • the transmission parameter of the PCFICH includes at least one of the following information:
  • the time-frequency resource location information of the PCFICH includes at least one of the following information:
  • the subcarrier starting position of the PCFICH or,
  • the number of consecutive time slots of the PCFICH in the time domain is the number of consecutive time slots of the PCFICH in the time domain.
  • the receiving module is configured to receive a PCFICH on multiple consecutive subframes
  • the determining module is further configured to determine PDCCH region configuration information on the same subframe according to the time-frequency resource information carried by the PCFICH on the multiple consecutive subframes received by the receiving module.
  • the time domain start position of the PCFICH is the first time slot of each subframe.
  • the number of persistent time slots of the PCFICH in the time domain is determined by a frequency reuse factor.
  • the transmission parameter of the PCFICH is determined by a frequency reuse factor.
  • the number of subcarriers of the PCFICH includes all subcarriers in the cell; or the PCFICH and the PDCCH region use the same subcarrier.
  • the time-frequency resource information of each coverage level in the PDCCH region includes at least one of the following:
  • the PDCCH of each coverage level occupies a bitmap of resources.
  • each coverage level adopts a time domain priority arrangement manner in the PDCCH area
  • Each coverage level adopts a frequency domain priority allocation manner in the PDCCH region
  • Different coverage levels are located in different time slots of the PDCCH region.
  • Different coverage levels are located in the same time slot of the PDCCH region.
  • the highest coverage level is ranked first in the PDCCH region.
  • the lowest coverage level is ranked first in the PDCCH region.
  • the device provided by the embodiment of the present invention can implement the flexible setting of the time-frequency resource information by using the PCFICH to carry the time-frequency resource information of each coverage level in the PDCCH region, thereby avoiding resource waste caused by the inelastic division of the base station. .
  • the information transmission apparatus may be used to implement the information transmission method provided in the foregoing embodiment shown in FIG. 3 and the optional embodiment thereof.
  • the optional embodiment of the foregoing apparatus Refer to the detailed description of the method embodiments, which are not described herein.
  • FIG. 15 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention. See Figure 15, including:
  • the receiving module 1501 is configured to receive a physical layer control signaling format indication channel PCFICH, where the PCFICH carries physical downlink control channel EPDCCH region configuration information;
  • a determining module 1502 configured to determine time-frequency resource information of the EPDCCH of the self-coverage level according to the EPDCCH region configuration information, if the self-coverage level belongs to the third specified coverage level;
  • the receiving module 1502 is further configured to receive the physical downlink control channel PDCCH of the self-coverage level on the time-frequency resource indicated by the time-frequency resource information of the EPDCCH determined by the determining module.
  • the determining module 1502 is further configured to: when the self-coverage level belongs to the fourth specified coverage level, according to the PDCCH region configuration information and the pre-configured fourth specified coverage level, each coverage level is in the PDCCH region.
  • the frequency resource information determines time-frequency resource information of the PDCCH of the self-coverage level.
  • the time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH area is pre-configured.
  • the time-frequency resource information in the PDCCH region of each coverage level of the fourth specified coverage level is carried by the broadcast channel PBCH.
  • the configuration information of the PCFICH is carried by the PBCH.
  • the EPDCCH region configuration information includes:
  • Time-frequency of EPDCCH for each coverage level in the third specified coverage level in even subframes Source information
  • the number of PDCCH code blocks occupied by the EPDCCH of each coverage level in the third specified coverage level is occupied.
  • the PCFICH includes multiple fields, where a first field is used to indicate each coverage level in the third specified coverage level, and the remaining fields are used to indicate a time frequency of each coverage level in the third specified coverage level. Resource information.
  • the determining module is configured to exclude the PDCCH, the PCFICH, and the PBCH from the time-frequency resources occupied by the EPDCCH indicated by the EPDCCH region configuration information according to the EPDCCH region configuration information that is received by the receiving module.
  • the time-frequency resource is occupied, and the remaining time-frequency resource is obtained.
  • time-frequency resource information of the EPDCCH of the self-coverage level is determined.
  • the information transmission apparatus may be used to implement the information transmission method provided in the foregoing embodiment shown in FIG. 13 and its optional embodiment.
  • the optional embodiment of the foregoing apparatus Refer to the detailed description of the method embodiments, which are not described herein.
  • the above embodiment reduces the dynamic range of the length of each coverage level required by the PCFICH by reducing the EPDCCH region configuration information for indicating the third specified coverage level in the PCFICH. Further, the PCFICH can be transmitted in a more robust manner. That is, the lower data rate in the same time-frequency resource carries the EPDCCH channel information, thereby improving the transmission efficiency.
  • FIG. 16 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention. See Figure 16, including:
  • the sending module 1601 is configured to send a physical control format indication channel PCFICH, where the PCFICH carries time-frequency resource information of each coverage level in the PDCCH region.
  • the configuration information of the PCFICH is carried by the broadcast channel PBCH.
  • the PDCCH region configuration information is carried by the PBCH.
  • the PDCCH region configuration information includes at least one of the following information:
  • the PDCCH region time-frequency resource location information or the number of coverage levels included in the PDCCH region; or the transmission parameters of the respective coverage levels PDCCH.
  • the PDCCH region time-frequency resource location information includes at least one of the following information:
  • a subcarrier start position of the PDCCH region or a number of subcarriers of the PDCCH region; or a time domain start position of the PDCCH region; or a number of persistent time slots of the PDCCH region in the time domain .
  • the transmission parameter of each coverage level PDCCH includes at least one of the following: a modulation mode of the PDCCH of each coverage level; or an encoding code rate of a PDCCH of each coverage level; or The number of repetitions of the PDCCH of each coverage level.
  • each coverage level is divided into a first specified coverage level and a second specified coverage level; the first specified coverage level is a coverage level of receiving the PCFICH; and the second specified coverage level is a non-reception level The coverage level of the PCFICH.
  • the configuration information of the PCFICH includes at least one of the following: a transmission parameter of the PCFICH; or a time-frequency resource location information of the PCFICH; or an coverage level that belongs to a first specified coverage level. Number; or the coverage level number that belongs to the second specified coverage level.
  • the coverage level belonging to the first specified coverage level is pre-configured; and/or belongs to the second The coverage level of the specified coverage level is pre-configured.
  • the time-frequency resource information of the coverage level in the PDCCH area includes: time-frequency resource location information occupied by a coverage level that belongs to the first specified coverage level, and a coverage level that belongs to the second specified coverage level. At least one of the occupied time-frequency resource location information.
  • the transmission parameter of the PCFICH includes at least one of the following: a modulation mode of the PCFICH; or an encoding code rate of the PCFICH; or a repetition number of the PCFICH.
  • the time-frequency resource location information of the PCFICH includes at least one of the following: a subcarrier start position of the PCFICH; or a number of subcarriers of the PCFICH; or, a time of the PCFICH The starting position of the domain; or the number of consecutive time slots of the PCFICH in the time domain.
  • the sending module is configured to send the PCFICH on multiple consecutive subframes, where time-frequency resource information carried by the PCFICH on the multiple consecutive subframes is used to indicate PDCCH region configuration on the same subframe. information.
  • the time domain start position of the PCFICH is the first time slot of each subframe.
  • the number of persistent time slots of the PCFICH in the time domain is determined by a frequency reuse factor.
  • the transmission parameter of the PCFICH is determined by a frequency reuse factor.
  • the number of subcarriers of the PCFICH includes all subcarriers in the cell; or the PCFICH and the PDCCH region use the same subcarrier.
  • the time-frequency resource information of each coverage level in the PDCCH region includes at least one of: a starting time domain location of the respective coverage levels and a number of persistent time slots in the time domain; or The initial frequency domain position of each coverage level and the continuous frequency domain length in the frequency domain; or the number of consecutive time slots of the PDCCH of each coverage level in the time domain; or, the PDCCH of each coverage level is a continuous frequency domain length in the frequency domain; or a number of PDCCHs of the respective coverage levels; or a bit map of resources occupied by the PDCCHs of the respective coverage levels.
  • each coverage level adopts a time domain priority arrangement manner in the PDCCH area; or, each coverage level adopts a frequency domain priority arrangement manner in the PDCCH area; or, different The coverage level is located in different time slots of the PDCCH region; or, different coverage levels are located in the same time slot of the PDCCH region.
  • the highest coverage level is ranked first in the PDCCH region; or the lowest coverage level is ranked first in the PDCCH region.
  • the information transmission apparatus may be used to implement the information transmission method provided in the embodiment shown in FIG. 17 and the optional embodiment thereof.
  • the optional embodiment of the foregoing apparatus For a specific implementation form of the optional embodiment of the foregoing apparatus, reference is made to the description.
  • the information transmission device reference may be made to the specific embodiment in FIG. 3 and its optional embodiments.
  • the device provided by the embodiment of the present invention can implement the flexible setting of the time-frequency resource information by using the PCFICH to carry the time-frequency resource information of each coverage level in the PDCCH region, thereby avoiding resource waste caused by the inelastic division of the base station. .
  • FIG. 17 is a flowchart of an information transmission method according to an embodiment of the present invention. Referring to Figure 17, the method includes:
  • the method provided by the embodiment of the present invention can implement the flexible setting of the time-frequency resource information by using the PCFICH to carry the time-frequency resource information of each coverage level in the PDCCH region, thereby avoiding resource waste caused by inflexibility of the base station division. .
  • FIG. 18 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention. See Figure 18, including:
  • a sending module 1801 configured to send a physical layer control signaling format indication channel PCFICH,
  • the PCFICH carries the physical downlink control channel EPDCCH region configuration information, and the EPDCCH region carries the PDCCH of the third specified coverage level.
  • the time-frequency resource information in the PDCCH region of each coverage level of the fourth specified coverage level is pre-configured.
  • the time-frequency resource information in the PDCCH region of each coverage level of the fourth specified coverage level is carried by the broadcast channel PBCH.
  • the configuration information of the PCFICH is carried by the PBCH.
  • the EPDCCH region configuration information includes:
  • Time-frequency resource information of the EPDCCH of each coverage level in the third specified coverage level in the even subframe
  • the number of PDCCH code blocks occupied by the EPDCCH of each coverage level in the third specified coverage level is occupied.
  • the PCFICH includes multiple fields, where a first field is used to indicate each coverage level in the third specified coverage level, and the remaining fields are used to indicate a time frequency of each coverage level in the third specified coverage level. Resource information.
  • the hierarchical EPDCCH region configuration information is such that the dynamic range of the length of each coverage level required by the PCFICH is reduced compared to the embodiment shown in FIG. Further, the PCFICH can be transmitted in a more robust manner, that is, the lower data rate in the same time-frequency resource carries the EPDCCH channel information, thereby improving the transmission efficiency.
  • the information transmission apparatus may be used to implement the information transmission method provided in the embodiment shown in FIG. 19 and the optional embodiment thereof.
  • the optional embodiment of the foregoing apparatus For a detailed description of the method embodiments, reference is made to the description.
  • the specific implementation details of the information transmission device can be referred to the specific embodiment in FIG. 13 and its optional embodiments.
  • FIG. 19 is a flowchart of an information transmission method according to an embodiment of the present invention. Referring to Figure 19, the method includes:
  • the physical layer control signaling format indication channel PCFICH is sent, where the PCFICH carries physical downlink control channel EPDCCH region configuration information, and the EPDCCH region carries a third specified coverage level PDCCH.
  • the above embodiment reduces the dynamic range of the length of each coverage level required by the PCFICH by reducing the EPDCCH region configuration information for indicating the third specified coverage level in the PCFICH. Further, the PCFICH can be transmitted in a more robust manner, that is, the lower data rate in the same time-frequency resource carries the EPDCCH channel information, thereby improving the transmission efficiency.
  • FIG. 20 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station includes a transmitter 2001, a receiver 2002, a memory 2003, and a processor 2004 connected to the transmitter 2001, the receiver 2002, and the memory 2003, respectively.
  • the base station may further include a common component such as an antenna, a baseband processing component, a medium RF processing component, an input/output device, etc., where the embodiment of the present invention is No more restrictions.
  • a set of program codes is stored in the memory, and the processor 2004 is configured to call the program code stored in the memory for performing the operations in the embodiment shown in FIG. 17 or FIG.
  • program code is also used to perform various operations in the above information transmission method.
  • FIG. 21 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • the terminal device includes a transmitter 2101, a receiver 2102, a memory 2103, and a processor 2104 connected to the transmitter 2101, the receiver 2102, and the memory 2103, respectively.
  • the base station may also include a common component such as an antenna, a baseband processing component, a medium-frequency radio processing component, and an input/output device, and the embodiment of the present invention is not limited thereto.
  • the program is stored in the memory, and the processor 2104 is configured to call the program code stored in the memory for performing the operation on the terminal device side in the embodiment shown in FIG. 3 or FIG.
  • program code is also used to perform various operations in the above information transmission method.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

La présente invention, qui a trait au domaine technique des communications, concerne un procédé et un appareil de transmission d'informations. Le procédé comprend les étapes suivantes : la réception d'un canal physique d'indicateur de format de commande (PCFICH), le canal PCFICH transportant des informations de ressources temps-fréquence relatives à diverses classes de couverture dans une région de canaux PDCCH ; la détermination des informations des ressources temps-fréquence relatives à un canal PDCCH de sa propre classe de couverture selon des informations de configuration relatives à la région de canaux PDCCH et des informations de ressources temps-fréquence relatives à diverses classes de couverture dans la région de canaux PDCCH ; et la réception du canal PDCCH de sa propre classe de couverture à une position de ressources temps-fréquence indiquée par les informations déterminées de ressources temps-fréquence. Par le transport d'informations de ressources temps-fréquence relatives à diverses classes de couverture dans une région de canaux PDCCH au moyen d'un canal PCFICH, l'invention accomplit un agencement flexible des informations de ressources temps-fréquence et évite un gaspillage de ressources causé par une répartition inflexible des stations de base.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109769302A (zh) * 2017-02-04 2019-05-17 华为技术有限公司 发送信息的方法、接收信息的方法和装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3914018A1 (fr) * 2017-08-10 2021-11-24 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé de communication sans fil, dispositif de réseau et dispositif terminal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102630099A (zh) * 2012-03-12 2012-08-08 电信科学技术研究院 一种配置下行控制信道cfi的方法和设备
WO2014204285A1 (fr) * 2013-06-21 2014-12-24 Lg Electronics Inc. Procédé d'amélioration de la couverture d'un équipement utilisateur et appareil utilisant ce procédé
CN104348580A (zh) * 2013-08-06 2015-02-11 夏普株式会社 下行物理信道的发送和接收方法以及基站和用户设备
CN104518843A (zh) * 2013-09-27 2015-04-15 中兴通讯股份有限公司 公有消息发送、接收方法、装置及系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9113462B2 (en) * 2012-05-03 2015-08-18 Qualcomm Incorporated Resource mapping for ePDCCH in LTE
CN103959878B (zh) * 2013-09-26 2017-11-24 华为技术有限公司 用户设备覆盖增强资源的分配方法、基站和用户设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102630099A (zh) * 2012-03-12 2012-08-08 电信科学技术研究院 一种配置下行控制信道cfi的方法和设备
WO2014204285A1 (fr) * 2013-06-21 2014-12-24 Lg Electronics Inc. Procédé d'amélioration de la couverture d'un équipement utilisateur et appareil utilisant ce procédé
CN104348580A (zh) * 2013-08-06 2015-02-11 夏普株式会社 下行物理信道的发送和接收方法以及基站和用户设备
CN104518843A (zh) * 2013-09-27 2015-04-15 中兴通讯股份有限公司 公有消息发送、接收方法、装置及系统

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
3GPP: "Study on provision of low-cost Machine-Type Communications (MTC) User Equipments (UEs) based on LTE (Release 12", 3GPP TR 36.888 V12.0.0, 30 June 2013 (2013-06-30), XP002749419 *
INTEL CORPORATION: "Coverage Improvement for PCFICH and PHICH", 3GPP TSG RAN WG1 MEETING #76 R1-140117, 14 February 2014 (2014-02-14), XP050735681 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109769302A (zh) * 2017-02-04 2019-05-17 华为技术有限公司 发送信息的方法、接收信息的方法和装置
CN109769302B (zh) * 2017-02-04 2020-01-03 华为技术有限公司 发送信息的方法、接收信息的方法和装置
US11166266B2 (en) 2017-02-04 2021-11-02 Huawei Technologies Co., Ltd. Information sending method and apparatus and information receiving method and apparatus

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