WO2017041301A1

WO2017041301A1 - Information transmission method and apparatus

Info

Publication number: WO2017041301A1
Application number: PCT/CN2015/089460
Authority: WO
Inventors: 李强; 冯淑兰; 刘劲楠; 吴毅凌
Original assignee: 华为技术有限公司
Priority date: 2015-09-11
Filing date: 2015-09-11
Publication date: 2017-03-16
Also published as: CN107005992A

Abstract

Disclosed are an information transmission method and apparatus, which relate to the technical field of communications. The method comprises: receiving a physical control format indicator channel (PCFICH), wherein the PCFICH carries time-frequency resource information about various coverage classes in a PDCCH region; determining time-frequency resource information about a PDCCH of its own coverage class according to configuration information about the PDCCH region and the time-frequency resource information about various coverage classes in the PDCCH region; and receiving the PDCCH of its own coverage class at a time-frequency resource position indicated by the determined time-frequency resource information. By carrying time-frequency resource information about various coverage classes in a PDCCH region by means of a PCFICH, flexible arrangement of the time-frequency resource information is achieved, and resource waste caused due to inflexible base station division is avoided.

Description

Information transmission method and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method and apparatus.

Background technique

With the development of technology, the IoT business of massive and small data packets has gradually become an important business of wireless communication. The sender of the communication in the Internet of Things is "thing" rather than "person." For example, smart meter reading or monitoring information uploading. Usually, the packets sent and received in the Internet of Things are relatively small and are not sensitive to delay. However, the environment in which IoT terminals are located is generally more difficult than wireless Internet terminals such as smart phones. For example, 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.

Since one base station of the Internet of Things will be a plurality of terminal devices in the serving cell, and the range of the cell may be large, the path loss condition of different terminal devices to the base station in the cell is usually very large. In order to balance the transmission conditions of different terminal devices, 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. When the PDCCH (Physical Downlink Control Channel) is transmitted to the terminal device, 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.

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.

In the process of implementing the present invention, the inventors have found that the prior art has at least the following problems:

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.

Summary of the invention

The embodiment of the invention provides an information transmission method and device. The technical solution is as follows:

In a first aspect, an information transmission apparatus is provided, 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.

In a possible implementation manner of the first aspect, the configuration information of the PCFICH is carried by a broadcast channel PBCH.

In a possible implementation manner of the first aspect, the PDCCH region configuration information is carried by using a PBCH.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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 .

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation manner of the first aspect, 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.

In a possible implementation of the first aspect, the time domain start position of the PCFICH is the first time slot of each subframe.

In a possible implementation of the first aspect, the number of persistent time slots of the PCFICH in the time domain is determined by a frequency reuse factor.

In a possible implementation of the first aspect, the transmission parameter of the PCFICH is determined by a frequency reuse factor.

In a possible implementation manner of the first aspect, the number of subcarriers of the PCFICH includes all subcarriers in a cell; or the PCFICH and the PDCCH region use the same subcarrier.

In a possible implementation manner of the first aspect, the time-frequency resource information of each coverage level in the PDCCH region includes at least one of the following:

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 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 continuous frequency domain length of the PDCCH of each coverage level in the frequency domain; or

The number of PDCCHs of the respective coverage levels; or,

The PDCCH of each coverage level occupies a bitmap of resources.

In a possible implementation manner of the first aspect, 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.

In a possible implementation of the first aspect, the highest coverage level is ranked first in the PDCCH region; or the lowest coverage level is ranked first in the PDCCH region.

In a second aspect, an information transmission method is provided, including:

Receiving a physical control format indication channel PCFICH, where the PCFICH carries time-frequency resource information of each coverage level in the PDCCH region;

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;

Receiving the PDCCH of the self coverage level on the time-frequency resource location indicated by the determined time-frequency resource information.

In a possible implementation manner of the second aspect, the configuration information of the PCFICH is carried by the broadcast channel PBCH.

In a possible implementation manner of the second aspect, the PDCCH region configuration information is carried by using a PBCH.

In a possible implementation manner of the second aspect, the PDCCH region configuration information includes at least one of the following information:

Time-frequency resource location information of the PDCCH region; or

The number of coverage levels included in the PDCCH region; or,

Transmission parameters of the respective coverage levels PDCCH.

In a possible implementation manner of the second aspect, the PDCCH region time-frequency resource location information includes at least one of the following information:

a subcarrier starting position of the PDCCH region; or

The number of subcarriers of the PDCCH region; or,

a time domain start position of the PDCCH region; or,

The number of consecutive time slots of the PDCCH region in the time domain.

In a possible implementation manner of the second aspect, the transmission parameter of each coverage level PDCCH includes at least one of the following information:

Modulation mode of the PDCCH of each coverage level; or

Encoding code rate of the PDCCH of each coverage level; or

The number of repetitions of the PDCCH of each coverage level.

In a possible implementation manner of the second aspect, 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 second specified coverage level is a coverage level that does not receive the PCFICH.

In a possible implementation manner of the second aspect, the configuration information of the PCFICH includes at least one of the following information:

Transmission parameters of the PCFICH; or

Time-frequency resource location information of the PCFICH; or

The coverage level number belonging to the first specified coverage level; or

The coverage level number belonging to the second specified coverage level.

In a possible implementation manner of the second aspect, 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.

In a possible implementation manner of the second aspect, if the self-coverage level belongs to the second specified coverage level, determining time-frequency resource information of the PDCCH to which the coverage level belongs is determined according to the pre-configured resource configuration information; or

If the self-coverage level belongs to the second specified coverage level, the reference signal sequence is detected, and the time-frequency resource information of the PDCCH to which the coverage level belongs is determined.

In a possible implementation manner of the second aspect, 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,

Number of subcarriers; or,

Time domain start position; or,

The number of consecutive time slots on the time domain; or,

The number of PDCCHs.

In a possible implementation manner of the second aspect, if the self-coverage level belongs to the second specified coverage level, 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,

Determining, according to the detected reference signal sequence, the resource configuration information of the PDCCH of the coverage level to which the self belongs, from the correspondence between the pre-configured reference signal sequence and the PDCCH resource;

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.

In a possible implementation manner of the second aspect, 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.

In a possible implementation manner of the second aspect, 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:

Determining, in addition to the self-coverage level in the PDCCH region, the time-frequency resource information in the PDCCH region and the PDCCH region configuration information, according to the received time-frequency resource information in the PDCCH region and the received coverage level. The remaining time-frequency resource information that is not occupied by the coverage level and the time-frequency resource information occupied by the first specified coverage level.

In a possible implementation manner of the second aspect, the transmission parameter of the PCFICH includes at least one of the following information:

Modulation mode of the PCFICH; or

The code rate of the PCFICH; or,

The number of repetitions of the PCFICH.

In a possible implementation manner of the second aspect, 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 subcarriers of the PCFICH; or,

The time domain starting position of the PCFICH; or,

The number of consecutive time slots of the PCFICH in the time domain.

In a possible implementation of the second aspect, 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.

In a possible implementation of the second aspect, the time domain start position of the PCFICH is the first time slot of each subframe.

In a possible implementation of the second aspect, the number of consecutive time slots of the PCFICH in the time domain is determined by a frequency reuse factor.

In a possible implementation of the second aspect, the transmission parameter of the PCFICH is determined by a frequency reuse factor.

In a possible implementation manner of the second aspect, the number of subcarriers of the PCFICH includes all subcarriers in a cell; or the PCFICH and the PDCCH region use the same subcarrier.

In a possible implementation manner of the second aspect, the time-frequency resource information of each coverage level in the PDCCH region includes at least one of the following:

The number of PDCCHs of the respective coverage levels; or,

The PDCCH of each coverage level occupies a bitmap of resources.

In a possible implementation manner of the second aspect, each coverage level adopts a time domain priority arrangement manner in the PDCCH region; or

Each coverage level adopts a frequency domain priority allocation 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.

In a possible implementation of the second aspect, the highest coverage level is ranked first in the PDCCH region; or

The lowest coverage level is ranked first in the PDCCH region.

In a third aspect, an information transmission apparatus is provided, 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.

In a possible implementation manner of the third aspect, 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.

In a possible implementation manner of the third aspect, the time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH area is pre-configured.

In a possible implementation manner of the third aspect, 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.

In a possible implementation manner of the third aspect, the configuration information of the PCFICH is carried by the PBCH.

In a possible implementation manner of the third aspect, 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; or

a starting time domain position of an EPDCCH of each coverage level in the third specified coverage level and a number of persistent time slots in the time domain; or

The starting frequency domain position of the EPDCCH of each coverage level in the third specified coverage level and the continuous frequency domain length in the frequency domain; or

a continuous time slot of the EPDCCH of each coverage level in the third specified coverage level in the time domain Quantity; or,

a continuous frequency domain length of the EPDCCH of each coverage level in the third specified coverage level 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 is occupied.

In a possible implementation of the third aspect, there is no intersection between the third specified coverage level and the fourth specified coverage level.

In a possible implementation manner of the third aspect, 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.

In a possible implementation manner of the third aspect, 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.

In a fourth aspect, an information transmission method is provided, including:

Receiving a physical layer control signaling format indication channel PCFICH, where the PCFICH carries an enhanced physical downlink control channel EPDCCH region configuration information;

Determining 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;

Receiving the physical downlink control channel PDCCH of the self-coverage level on the time-frequency resource indicated by the determined time-frequency resource information of the EPDCCH.

In a possible implementation manner of the fourth aspect, the method further includes:

If the self-coverage level belongs to the fourth specified coverage level, 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.

In a possible implementation manner of the fourth aspect, the time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH area is pre-configured.

In a possible implementation manner of the fourth aspect, the time-frequency resource information in the PDCCH region of each of the fourth specified coverage levels is carried by the broadcast channel PBCH.

In a possible implementation manner of the fourth aspect, the configuration information of the PCFICH is carried by the PBCH.

In a possible implementation manner of the fourth aspect, the EPDCCH region configuration information includes:

The number of consecutive time slots of the EPDCCH of each coverage level in the third specified coverage level in the time domain; or

In a possible implementation of the fourth aspect, there is no intersection between the third specified coverage level and the fourth specified coverage level.

In a possible implementation manner of the fourth aspect, 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.

In a possible implementation manner of the fourth aspect, the determining, according to the EPDCCH region configuration information, the time-frequency resource information of the EPDCCH of the self-coverage level includes:

Determining time-frequency resources occupied by the PDCCH, the PCFICH, and the PBCH from the time-frequency resources occupied by the EPDCCH indicated by the EPDCCH region configuration information, and obtaining the remaining time-frequency resources, according to the EPDCCH region configuration information;

In the remaining time-frequency resources, time-frequency resource information of the EPDCCH of the self-coverage level is determined.

In a fifth aspect, an information transmission apparatus is provided, including:

And 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.

In a possible implementation manner of the fifth aspect, the configuration information of the PCFICH is carried by the broadcast channel PBCH.

In a possible implementation manner of the fifth aspect, the PDCCH region configuration information is carried by using a PBCH.

In a possible implementation manner of the fifth aspect, the PDCCH region configuration information includes at least one of the following information:

Time-frequency resource location information of the PDCCH region; or

The number of coverage levels included in the PDCCH region; or,

Transmission parameters of the respective coverage levels PDCCH.

In a possible implementation manner of the fifth aspect, the PDCCH region time-frequency resource location information includes at least one of the following information:

a subcarrier starting position of the PDCCH region; or

The number of subcarriers of the PDCCH region; or,

a time domain start position of the PDCCH region; or,

The number of consecutive time slots of the PDCCH region in the time domain.

In a possible implementation manner of the fifth aspect, the transmission parameter of each coverage level PDCCH includes at least one of the following information:

Modulation mode of the PDCCH of each coverage level; or

Encoding code rate of the PDCCH of each coverage level; or

The number of repetitions of the PDCCH of each coverage level.

In a possible implementation manner of the fifth aspect, 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;

In a possible implementation manner of the fifth aspect, the configuration information of the PCFICH includes at least one of the following information:

Transmission parameters of the PCFICH; or

Time-frequency resource location information of the PCFICH; or

The coverage level number belonging to the first specified coverage level; or

The coverage level number belonging to the second specified coverage level.

In a possible implementation manner of the fifth aspect, 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.

In a possible implementation manner of the fifth aspect, 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.

In a possible implementation manner of the fifth aspect, the transmission parameter of the PCFICH includes at least one of the following information:

Modulation mode of the PCFICH; or

The code rate of the PCFICH; or,

The number of repetitions of the PCFICH.

In a possible implementation manner of the fifth aspect, 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 subcarriers of the PCFICH; or,

The time domain starting position of the PCFICH; or,

The number of consecutive time slots of the PCFICH in the time domain.

In a possible implementation manner of the fifth aspect, 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.

In a possible implementation manner of the fifth aspect, the time domain start position of the PCFICH is the first time slot of each subframe.

In a possible implementation manner of the fifth aspect, the number of consecutive time slots of the PCFICH in the time domain is determined by a frequency reuse factor.

In a possible implementation manner of the fifth aspect, the transmission parameter of the PCFICH is determined by a frequency reuse factor.

In a possible implementation manner of the fifth aspect, the number of subcarriers of the PCFICH includes all subcarriers in a cell; or the PCFICH and the PDCCH region use the same subcarrier.

In a possible implementation manner of the fifth aspect, the time-frequency resource information of each coverage level in the PDCCH region includes at least one of the following:

The number of PDCCHs of the respective coverage levels; or,

The PDCCH of each coverage level occupies a bitmap of resources.

In a possible implementation manner of the fifth aspect, each coverage level adopts a time domain priority arrangement manner in the PDCCH area; or

In a possible implementation of the fifth aspect, the highest coverage level is ranked first in the PDCCH region; or

The lowest coverage level is ranked first in the PDCCH region.

In a sixth aspect, an information transmission method is provided, 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.

In a possible implementation manner of the sixth aspect, the configuration information of the PCFICH is carried by a broadcast channel PBCH.

In a possible implementation manner of the sixth aspect, the PDCCH region configuration information is carried by using a PBCH.

In a possible implementation manner of the sixth aspect, the PDCCH region configuration information includes at least one of the following information:

Time-frequency resource location information of the PDCCH region; or

The number of coverage levels included in the PDCCH region; or,

Transmission parameters of the respective coverage levels PDCCH.

In a possible implementation manner of the sixth aspect, the PDCCH region time-frequency resource location information includes at least one of the following information:

a subcarrier starting position of the PDCCH region; or

The number of subcarriers of the PDCCH region; or,

a time domain start position of the PDCCH region; or,

The number of consecutive time slots of the PDCCH region in the time domain.

In a possible implementation manner of the sixth aspect, the transmission parameter of each coverage level PDCCH includes at least one of the following information:

Modulation mode of the PDCCH of each coverage level; or

Encoding code rate of the PDCCH of each coverage level; or

The number of repetitions of the PDCCH of each coverage level.

In a possible implementation manner of the sixth aspect, 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;

In a possible implementation manner of the sixth aspect, the configuration information of the PCFICH includes at least one of the following information:

Transmission parameters of the PCFICH; or

Time-frequency resource location information of the PCFICH; or

The coverage level number belonging to the first specified coverage level; or

The coverage level number belonging to the second specified coverage level.

In a possible implementation manner of the sixth aspect, 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.

In a possible implementation manner of the sixth aspect, 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.

In a possible implementation manner of the sixth aspect, the transmission parameter of the PCFICH includes at least one of the following information:

Modulation mode of the PCFICH; or

The code rate of the PCFICH; or,

The number of repetitions of the PCFICH.

In a possible implementation manner of the sixth aspect, 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 subcarriers of the PCFICH; or,

The time domain starting position of the PCFICH; or,

The number of consecutive time slots of the PCFICH in the time domain.

In a possible implementation manner of the sixth aspect, 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.

In a possible implementation manner of the sixth aspect, the time domain start position of the PCFICH is the first time slot of each subframe.

In a possible implementation manner of the sixth aspect, the number of consecutive time slots of the PCFICH in the time domain is determined by a frequency reuse factor.

In a possible implementation manner of the sixth aspect, the transmission parameter of the PCFICH is determined by a frequency reuse factor.

In a possible implementation manner of the sixth aspect, the number of subcarriers of the PCFICH includes all subcarriers in a cell; or the PCFICH and the PDCCH region use the same subcarrier.

In a possible implementation manner of the sixth aspect, the time-frequency resource information of each coverage level in the PDCCH region includes at least one of the following:

The number of PDCCHs of the respective coverage levels; or,

The PDCCH of each coverage level occupies a bitmap of resources.

In a possible implementation manner of the sixth aspect, each coverage level adopts a time domain priority arrangement manner in the PDCCH region; or

In a possible implementation of the sixth aspect, the highest coverage level is ranked first in the PDCCH region; or

The lowest coverage level is ranked first in the PDCCH region.

According to a seventh aspect, an information transmission apparatus is provided, including:

And 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.

In a possible implementation manner of the seventh aspect, the time-frequency resource information in the PDCCH region of each coverage level of the fourth specified coverage level is pre-configured.

In a possible implementation manner of the seventh aspect, the time-frequency resource information in the PDCCH region of each of the fourth specified coverage levels is carried by the broadcast channel PBCH.

In a possible implementation manner of the seventh aspect, the configuration information of the PCFICH is carried by using a PBCH.

In a possible implementation manner of the seventh aspect, the EPDCCH region configuration information includes:

The starting frequency domain position of the EPDCCH of each coverage level in the third specified coverage level and The length of the frequency domain in the frequency domain; or,

In a possible implementation of the seventh aspect, there is no intersection between the third specified coverage level and the fourth specified coverage level.

In a possible implementation manner of the seventh aspect, 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.

In an eighth aspect, an information transmission method is provided, 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.

In a possible implementation manner of the eighth aspect, the time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH region is pre-configured.

In a possible implementation manner of the eighth aspect, the time-frequency resource information in the PDCCH region of each of the fourth specified coverage levels is carried by the broadcast channel PBCH.

In a possible implementation manner of the eighth aspect, the configuration information of the PCFICH is carried by the PBCH.

In a possible implementation manner of the eighth aspect, the EPDCCH region configuration information includes:

In a possible implementation of the eighth aspect, there is no intersection between the third specified coverage level and the fourth specified coverage level.

In a possible implementation manner of the eighth aspect, 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). The flexible setting of information avoids the waste of resources caused by the inflexibility of base station division.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

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;

3 is a flowchart of an information transmission method according to an embodiment of the present invention;

4 is a schematic diagram of a time-frequency resource used by a PCFICH according to an embodiment of the present invention;

5 is a schematic diagram of another time-frequency resource used by the PCFICH according to an embodiment of the present invention;

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.

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.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not Part of the embodiment. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope 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.

Various aspects are described herein in connection with a terminal device and/or a base station.

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 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. For example, Personal Communication Service (PCS), cordless telephone, Session Initiation Protocol (SIP) Telephones, wireless local loop (WLL) stations, personal digital assistants (PDAs, Personal Digital Assistant) and other devices. 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 (e.g., an access point) 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. The base station can also coordinate attribute management of the air interface. For example, 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.

It should be noted that the core network node device provided by the present invention 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) network, CDMA (Code Division Mutiple Access), and the like. 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. For example, for a SAE/LTE network, 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 following describes an example of a cellular network as an SAE/LTE network. Other cellular networks may be implemented by referring to the following embodiments.

Additionally, the terms "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. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

The solution of the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In order to facilitate subsequent understanding, some basic techniques involved in the present invention are first explained herein:

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. Of course, 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. In the time domain, a frame is divided into 8 subframes. Each subframe is divided into 32 slots. In the frequency domain, 15 subcarriers are included. As shown in FIG. 2B, the last slot of each subframe is used to transmit a PSCH (Physical Shared Channel). The PBCH (Physical Broadcast Channel) is transmitted in every even subframe and occupies 5 consecutive slots. PDCCH (Physical Downlink Control Channel) in each odd subframe Transmit, in the frequency domain, the PDCCH occupies part of the subcarriers (for example, 8). In the time domain, 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.

Table 1

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:

300. Receive a physical control format indication channel PCFICH, where the PCFICH carries time-frequency resource information of each coverage level in a PDCCH region.

301. Determine time-frequency resource information of a PDCCH whose coverage level is based on PDCCH region configuration information and time-frequency resource information of each coverage level in the PDCCH region.

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.

Further, the time-frequency resource information of each coverage level in the PDCCH region includes any one of the following information:

(1) The starting time domain position of the respective coverage levels and the number of persistent time slots in the time domain.

(2) The starting frequency domain position of the respective coverage levels and the continuous frequency domain length in the frequency domain.

(3) The number of consecutive time slots of the PDCCH of each coverage level in the time domain.

(4) The continuous frequency domain length of the PDCCH of each coverage level in the frequency domain.

(5) The number of PDCCHs of the respective coverage levels.

(6) A bit map of resources occupied by the PDCCHs of the respective coverage levels.

Of course, 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.

302. Receive a PDCCH of the self-coverage level at a time-frequency resource location indicated by the determined time-frequency resource information.

After determining the time-frequency resource information of the PDCCH of the coverage level of the terminal device, 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. .

Optionally, on the basis of the embodiment shown in FIG. 3, 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. Optionally, the time-frequency resources occupied by the PCFICH may also be pre-configured.

In an embodiment of the present invention, the configuration information of the PCFICH may be pre-configured so that it is not required to be acquired from the PBCH. In another embodiment of the present invention, 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.

Further, the configuration information of the PCFICH includes at least one of the following information (1) and (2) and (3):

(1) Transmission parameters of the PCFICH.

The transmission parameter of the PCFICH includes at least one of the following information (1.1 to 1.3):

(1.1) The modulation method of the PCFICH, such as a modulation scheme such as BPSK, QPSK or 16QAM.

(1.2) 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.

(1.3) The number of repetitions of the PCFICH.

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.

As shown in FIG. 4, 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.

(2) The PCFICH time-frequency resource location information. 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.

(3) the number of the coverage level belonging to the first specified coverage level; or the number of the coverage level belonging to the second specified coverage level.

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.

In the embodiment of the present invention, it may be indicated that 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. Receiving the PCFICH, after receiving the PCFICH configuration information, or according to the pre-configured PCFICH configuration information, 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. It should be noted that, in particular, 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.

It should be noted that 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.

By determining the first specified coverage level and the second specified coverage level, 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.

In the above embodiment, the configuration information of the PCFICH is sent by the base station in the PBCH, so that the terminal device receives the PCFICH. In another embodiment provided by the present invention, 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.

Second, the number of consecutive time slots 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, then M=3, and if the frequency reuse factor of the system is 3, then M=1.

Third, 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.

In addition to being indicated by the PBCH, or by determining the PCFICH configuration parameters by the frequency reuse factor, 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. For example, taking FIG. 5 as an example, the PCFICH start position is always the first slot slot of each subframe. Or, 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. In the frequency domain, 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.

On the basis of the above two cases, in another embodiment provided by the present invention, in the frequency domain, the PCFICH and the PDCCH region may be reserved in advance to use the same subcarrier, as shown in FIG. 6.

Optionally, on the basis of the embodiment shown in FIG. 3, 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.

Alternatively, 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.

It should be noted that the PBCH may carry at least one of PDCCH region configuration information and PCFICH configuration information. When only the PDCCH region configuration information is carried, 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):

(1) 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):

(1.1) The subcarrier start position of the PDCCH region.

(1.2) Number of subcarriers in the PDCCH region. 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.

(1.3) Time domain start position of the PDCCH region.

(1.4) The number of consecutive time slots of the PDCCH region in the time domain. The number of the persistent time slots may be a value of 10, 30, or 31. The specific values of the embodiments of the present invention are not limited.

(2) The number of coverage levels included in the PDCCH region. The number of coverage levels can be 3, 4, etc.

(3) Transmission parameters of the respective coverage level PDCCHs.

Further, 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 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 of each coverage level, for example, the number of repetitions may be a value of 1 or 2.

Different from the prior art, specifically, 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. When placed, 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.

In the embodiment of the present invention, 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. Accordingly, in order to further illustrate the embodiments of the present invention, various arrangements are exemplified below, assuming that the PCFICH is arranged in the first time slot and occupies all subcarriers. Of course, the PCFICH can be in other forms as described above. In addition, it is also assumed that 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. Of course, 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.

For example, the time-frequency resources occupied by the PDCCHs of each coverage level are as shown in Table 1.

Table 1

覆盖等级 Coverage level	11	22	33	44
覆盖等级 Coverage level	11	22	33	44	时频资源Time-frequency resources	4(子载波)x1(时隙)4 (subcarrier) x1 (time slot)	4x34x3	4x24x2	4x234x23

As shown in FIG. 7, 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. First, 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. In this way, 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. For example, 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. In this way, according to the arrangement rule, 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.

In another example, 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. For example, 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. In this way, according to the arrangement rule, 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.

For example, the time-frequency resources occupied by the PDCCHs of each coverage level are as shown in Table 2.

Table 2

覆盖等级 Coverage level	11	22	33	44
覆盖等级 Coverage level	11	22	33	44	时频资源Time-frequency resources	4x14x1	12x112x1	8x18x1	92x192x1

As shown in FIG. 8, 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. In this way, 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. For example, 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. Thus, according to the arrangement rule, the terminal device can calculate the time-frequency start position and the time-frequency end position of each coverage level.

In another example, 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. For example, 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. In this way, according to the arrangement rule, the terminal device can also determine the time-frequency resource location actually occupied by the PDCCH of each coverage level.

It should be noted that, in the foregoing second arrangement, 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.

The above 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. For example, 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. In addition, there is another indication manner that some coverage levels indicate the number of PDCCHs, and the remaining coverage levels indicate the number of consecutive slots/subcarriers. For example, 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. But for coverage level 1, there are 5 PDCCHs, occupying 2 slots. If you use 5 in binary, you need 3bit, and 2 means only 2bit. Therefore, the PCFICH indicates that the coverage level 1 can indicate the number of slots. Thus 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.

Further, some coverage levels have poor transmission conditions (eg, coverage level 4), such coverage, etc. The success rate of the terminal device demodulating the PCFICH is not high. If the PCFICH cannot be correctly demodulated, the PDCCH cannot be further received or demodulated according to the above method. Therefore, 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. For example, 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.

Obviously, for a terminal device that does not receive the PCFICH, it is still necessary to know the time-frequency resource location occupied by the PDCCH of the coverage level to which it belongs. To this end, 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.

For the coverage level that does not receive the PCFICH, its PDCCH region can be pre-configured. The resource configuration information of the agreement includes at least one of the following:

The starting position of the subcarrier of the coverage level to which it belongs;

The number of subcarriers of the coverage level to which they belong;

The time domain starting position of the coverage level to which it belongs;

The number of consecutive time slots on the time domain of the coverage level to which they belong;

The number of PDCCHs of the coverage level to which they belong.

For example, if the coverage level 4 belongs to the second specified coverage level, that is, the terminal device of the coverage level 4 does not receive the PCFICH, 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.

Further, the actually allocated resources may not be fully used, so that the time-frequency resources originally allocated to the coverage level 4 can be used for other coverage levels. That is, the respective coverage levels are in the 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. Of course, 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. And 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.

Correspondingly, 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. .

For example, as shown in FIG. 11, although 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. Thus, 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. Specifically, 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. As shown in the figure, we arranged three PDCCHs with a coverage level of 3, six PDCCHs with a coverage level of 2, and seven PDCCHs with a coverage level of 1, in order of time priority. At the same time, 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 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. For example, in the figure below, 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. For users of level 1-3, the second area in the PCFICH (ie "0 1 1") is for 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.

For 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.

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. If it is agreed that 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. Among them, the reference signal is used for channel estimation and demodulation. In the embodiment of the present invention, some information may be carried by the reference signal. For example, the sequence of generating the reference signal may be sequence 1 or sequence 2. When the terminal device performs the detection, 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.

For example, for a slot slot, see FIG. 12, a slot consists of 17 OFDM symbols and 15 subcarriers in the frequency domain. The gray part carries the reference signal. It is assumed here that the reference signal sequence of the first half of the slot is s(n), n=1, . . . , 15 , and the reference signal sequence of the latter half is v(n), n=1, . . . , 15. 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. For example, 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.

table 3

使用的序列Sequence used	覆盖等级4的PDCCH数量Number of PDCCHs covering level 4
使用的序列Sequence used	覆盖等级4的PDCCH数量Number of PDCCHs covering level 4	s1,v1S1, v1	00
s1,v2S1, v2	11	s1,v1S1, v1	00
s1,v2S1, v2	11	s2,v1S2, v1	22
s2,v2S2, v2	33	s2,v1S2, v1	22

Assuming that the coverage level 4 is the second specified coverage level, 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.

It should be noted that 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:

1300. Receive a physical layer control signaling format indication channel PCFICH, where the PCFICH carries an enhanced physical downlink control channel EPDCCH region configuration information.

1301: If the self-coverage level belongs to the third specified coverage level, determine time-frequency resource information of the EPDCCH of the self-coverage level according to the EPDCCH region configuration information.

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.

In the embodiment of the present invention, 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.

In order to distinguish from the third specified coverage level, 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.

Optionally, 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.

In another embodiment, 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 .

It should be noted that 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. However, 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. That is, 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.

Further, 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.

Preferably, the EPDCCH region can be used to transmit a partial coverage level PDCCH.

It should be noted that there may be no intersection between the third specified coverage level and the fourth specified coverage level, that is, 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. Certainly, 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.

Optionally, in a case where there is no intersection between the third specified coverage level and the fourth specified coverage level, 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. That is, 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. Through the above-mentioned time-frequency resource information, the resource allocation of each coverage level can be known.

For example, 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. Here, 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.

Table 4

第一个字段First field	指示的覆盖等级 Indicated coverage level
第一个字段First field	指示的覆盖等级 Indicated coverage level	00	1,21,2

11	1,31,3
11	1,31,3	22	1,41,4
33	2,32,3	22	1,41,4
33	2,32,3	44	2,42,4
55	3,43,4	44	2,42,4

It should be noted that only the time-frequency resource information of the EPDCCH is indicated in the PCFICH. The EPDCCHs of different coverage levels may be arranged in a certain order according to the coverage level, but the EPDCCH region needs to exclude resources that have been allocated to channels such as PSCH, PDCCH, PCFICH, and the like. Therefore, 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:

According to the EPDCCH region configuration information, 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; In the frequency resource, 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.

Assuming that the PDCCH already occupies an odd number of subframes, the PCFICH has occupied the first few slots in the even and odd subframes, the PSCH has occupied the last slot in each subframe, and the PBCH occupies several slots in the even subframe. , as shown in Figure 2B. Then, 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. When 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 In the EPDCCH extended region, CC3 has one 1-slot EPDCCH region, CC2 has no EPDCCH region, and CC1 has two slot EPDCCH regions. However, since there are PBCH channels in even subframes, the EPDCCH regions may be separated by PBCH. In the first embodiment, the PCFICH indicates the PDCCH region information, which may also indicate the number of PDCCHs. For example, [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.

It should be noted that 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.

Further, the PDSCH (Physical Downlink Shared Channel) can be multiplexed into the PDCCH resources that are not used and used to further reduce resource waste.

FIG. 14 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention. Referring to Figure 14, 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.

Optionally, the configuration information of the PCFICH is carried by the broadcast channel PBCH.

Optionally, the PDCCH region configuration information is carried by the PBCH.

Optionally, the PDCCH region configuration information includes at least one of the following information:

Time-frequency resource location information of the PDCCH region; or

The number of coverage levels included in the PDCCH region; or,

Transmission parameters of the respective coverage levels PDCCH.

Optionally, the PDCCH region time-frequency resource location information includes at least one of the following information:

a subcarrier starting position of the PDCCH region; or

The number of subcarriers of the PDCCH region; or,

a time domain start position of the PDCCH region; or,

The number of consecutive time slots of the PDCCH region in the time domain.

Optionally, the transmission parameters of the respective coverage level PDCCHs include at least one of the following information:

Modulation mode of the PDCCH of each coverage level; or

Encoding code rate of the PDCCH of each coverage level; or

The number of repetitions of the PDCCH of each coverage level.

Optionally, 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;

Optionally, the configuration information of the PCFICH includes at least one of the following information:

Transmission parameters of the PCFICH; or

Time-frequency resource location information of the PCFICH; or

The coverage level number belonging to the first specified coverage level; or

The coverage level number belonging to the second specified coverage level.

Optionally, 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.

Optionally, it is characterized in that

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 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.

Optionally, the pre-configured resource configuration information includes at least one of the following:

Number of subcarriers; or,

Time domain start position; or,

The number of consecutive time slots on the time domain; or,

The number of PDCCHs.

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, the transmission parameter of the PCFICH includes at least one of the following information:

Modulation mode of the PCFICH; or

The code rate of the PCFICH; or,

The number of repetitions of the PCFICH.

Optionally, 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 subcarriers of the PCFICH; or,

The time domain starting position of the PCFICH; or,

The number of consecutive time slots of the PCFICH in the time domain.

Optionally, the receiving module is configured to receive a PCFICH on multiple consecutive subframes;

Optionally, the time domain start position of the PCFICH is the first time slot of each subframe.

Optionally, the number of persistent time slots of the PCFICH in the time domain is determined by a frequency reuse factor.

Optionally, the transmission parameter of the PCFICH is determined by a frequency reuse factor.

Optionally, the number of subcarriers of the PCFICH includes all subcarriers in the cell; or the PCFICH and the PDCCH region use the same subcarrier.

Optionally, the time-frequency resource information of each coverage level in the PDCCH region includes at least one of the following:

The number of PDCCHs of the respective coverage levels; or,

The PDCCH of each coverage level occupies a bitmap of resources.

Optionally, each coverage level adopts a time domain priority arrangement manner in the PDCCH area; or

Optionally, the highest coverage level is ranked first in the PDCCH region; or

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. .

It should be noted that 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. In addition, for the specific implementation form of 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.

Optionally, 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.

Optionally, the time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH area is pre-configured.

Optionally, 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.

Optionally, the configuration information of the PCFICH is carried by the PBCH.

Optionally, 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; or,

Optionally, there is no intersection between the third specified coverage level and the fourth specified coverage level.

Optionally, 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.

Optionally, 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. In the remaining time-frequency resource, time-frequency resource information of the EPDCCH of the self-coverage level is determined.

It should be noted that 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. In addition, for the specific implementation form of the optional embodiment of the foregoing apparatus, Refer to the detailed description of the method embodiments, which are not described herein.

It should be noted that 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.

Optionally, the PDCCH region configuration information is carried by the PBCH.

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.

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 .

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, the highest coverage level is ranked first in the PDCCH region; or the lowest coverage level is ranked first in the PDCCH region.

It should be noted that 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. In addition, for a specific implementation form of the optional embodiment of the foregoing apparatus, For a detailed description of the method embodiments, reference is made to the description. For detailed implementation details of the information transmission device, reference may be made to the specific embodiment in FIG. 3 and its optional embodiments.

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:

1701: Send a physical control format indication channel PCFICH, where the PCFICH carries time-frequency resource information of each coverage level in the PDCCH region.

It should be noted that the specific implementation form of the information in the method may be the same as that provided in the embodiment shown in FIG. 16 , and details are not described herein.

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.

Optionally, the time-frequency resource information in the PDCCH region of each coverage level of the fourth specified coverage level is pre-configured.

Optionally, the configuration information of the PCFICH is carried by the PBCH.

Optionally, the EPDCCH region configuration information includes:

It should be noted that the above embodiment is only carried in the PCFICH for indicating the third designated coverage. 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.

It should be noted that 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. In addition, for a specific implementation form of the optional embodiment of the foregoing apparatus, For a detailed description of the method embodiments, reference is made to the description. Moreover, 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:

1901. 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.

It should be noted that the specific implementation form of the information in the method may be the same as that provided in the foregoing embodiment shown in FIG. 18, and details are not described herein.

FIG. 20 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 20, 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. Certainly, 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.

Wherein, 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.

Further, the 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. As shown in FIG. 21, 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. Of course, 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.

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.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

An information transmission device, comprising:

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 apparatus according to claim 1, wherein the configuration information of the PCFICH is carried over a broadcast channel PBCH.
The apparatus according to claim 1, wherein the PDCCH region configuration information is carried by a PBCH.
The apparatus according to claim 1, wherein the PDCCH region configuration information comprises at least one of the following information:

Time-frequency resource location information of the PDCCH region; or

The number of coverage levels included in the PDCCH region; or,

Transmission parameters of the respective coverage levels PDCCH.
The apparatus according to claim 4, wherein the PDCCH region time-frequency resource location information comprises at least one of the following information:

a subcarrier starting position of the PDCCH region; or

The number of subcarriers of the PDCCH region; or,

a time domain start position of the PDCCH region; or,

The number of consecutive time slots of the PDCCH region in the time domain.
The apparatus according to claim 4, wherein the transmission parameters of the respective coverage level PDCCHs comprise at least one of the following information:

Modulation mode of the PDCCH of each coverage level; or

Encoding code rate of the PDCCH of each coverage level; or

The number of repetitions of the PDCCH of each coverage level.
The apparatus according to claim 1, wherein each of the coverage levels is divided into a first designated 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 apparatus according to claim 1 or 3 or 7, wherein the configuration information of the PCFICH includes at least one of the following information:

Transmission parameters of the PCFICH; or

Time-frequency resource location information of the PCFICH; or

The coverage level number belonging to the first specified coverage level; or

The coverage level number belonging to the second specified coverage level.
The apparatus according to claim 7, wherein 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.
Apparatus according to any one of claims 7 to 9, wherein

The determining module is further configured to: if the self coverage level belongs to the second specified coverage level, according to Pre-configured resource configuration information, determining time-frequency resource information of a PDCCH of a coverage level to which it belongs; 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 apparatus according to claim 10, wherein the pre-configured resource configuration information comprises at least one of the following:

The starting position of the subcarrier of the coverage level to which it belongs; or,

Number of subcarriers; or,

Time domain start position; or,

The number of consecutive time slots on the time domain; or,

The number of PDCCHs.
The apparatus according to claim 10 or 11, wherein the determining module is further configured to determine, according to a reference signal sequence detected by the detecting module, a correspondence between a pre-configured reference signal sequence and a PDCCH resource. The resource configuration information of the PDCCH of the coverage level to which the self belongs, and the coverage level of the PDCCH region in the pre-configured PDCCH region, the PDCCH region configuration information, and the resource configuration information of the PDCCH of the self-coverage level, and the coverage level of the PDCCH is determined. Time-frequency resource information of the PDCCH.
The apparatus according to claim 1 or 6, wherein the time-frequency resource information of the respective coverage levels in the PDCCH region comprises time-frequency resource location information occupied by a coverage level belonging to a first specified coverage level. And at least one of time-frequency resource location information occupied by the coverage level belonging to the second specified coverage level.
The device according to any one of claims 7 to 9, wherein 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 each received by the receiving module The time-frequency resource information of the coverage level in the PDCCH region 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 the first specified coverage level Time-frequency resource information occupied.
The apparatus according to claim 8, wherein the transmission parameter of the PCFICH comprises at least one of the following information:

Modulation mode of the PCFICH; or

The code rate of the PCFICH; or,

The number of repetitions of the PCFICH.
The apparatus according to claim 8, wherein the time-frequency resource location information of the PCFICH comprises at least one of the following information:

The subcarrier starting position of the PCFICH; or,

The number of subcarriers of the PCFICH; or,

The time domain starting position of the PCFICH; or,

The number of consecutive time slots of the PCFICH in the time domain.
The apparatus according to claim 1, wherein the receiving module is configured to receive a PCFICH on a plurality of 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 apparatus according to claim 16, wherein the time domain start position of the PCFICH is the first time slot of each subframe.
The apparatus of claim 16, wherein the number of persistent time slots of the PCFICH in the time domain is determined by a frequency reuse factor.
The apparatus of claim 15, wherein the transmission parameter of the PCFICH is determined by a frequency reuse factor.
The apparatus according to claim 16, wherein 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 apparatus according to claim 1, wherein the time-frequency resource information of each coverage level in the PDCCH region comprises at least one of the following:

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 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 continuous frequency domain length of the PDCCH of each coverage level in the frequency domain; or

The number of PDCCHs of the respective coverage levels; or,

The PDCCH of each coverage level occupies a bitmap of resources.
The device of claim 1 wherein:

Each coverage level adopts a time domain priority arrangement manner in the PDCCH region; or

Each coverage level adopts a frequency domain priority allocation 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 device according to claim 23, wherein

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, comprising:

Receiving a physical control format indication channel PCFICH, where the PCFICH carries time-frequency resource information of each coverage level in the PDCCH region;

Determining time-frequency resource information of the PDCCH of its own coverage level according to the PDCCH region configuration information and the time-frequency resource information of each coverage level in the PDCCH region;

Receiving the PDCCH of the self coverage level on the time-frequency resource location indicated by the determined time-frequency resource information.
The method according to claim 25, wherein the configuration information of the PCFICH is carried over a broadcast channel PBCH.
The method according to claim 25, wherein the PDCCH region configuration information is carried by a PBCH.
The method according to claim 25, wherein the PDCCH region configuration information comprises at least one of the following information:

Time-frequency resource location information of the PDCCH region; or

The number of coverage levels included in the PDCCH region; or,

Transmission parameters of the respective coverage levels PDCCH.
The method according to claim 28, wherein the PDCCH region time-frequency resource location information comprises at least one of the following information:

a subcarrier starting position of the PDCCH region; or

The number of subcarriers of the PDCCH region; or,

a time domain start position of the PDCCH region; or,

The number of consecutive time slots of the PDCCH region in the time domain.
The method according to claim 28, wherein the transmission parameters of the respective coverage level PDCCHs comprise at least one of the following information:

Modulation mode of the PDCCH of each coverage level; or

Encoding code rate of the PDCCH of each coverage level; or

The number of repetitions of the PDCCH of each coverage level.
The method according to claim 25, wherein said 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 method according to claim 25 or 27 or 31, wherein the configuration information of the PCFICH comprises at least one of the following information:

Transmission parameters of the PCFICH; or

Time-frequency resource location information of the PCFICH; or

The coverage level number belonging to the first specified coverage level; or

The coverage level number belonging to the second specified coverage level.
The method according to claim 31, wherein 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.
A method according to any one of claims 31 to 33, wherein

If the self-coverage level belongs to the second specified coverage level, determining time-frequency resource information of the PDCCH to which the coverage level belongs is determined according to the pre-configured resource configuration information; or

If the self-coverage level belongs to the second specified coverage level, the reference signal sequence is detected, and the time-frequency resource information of the PDCCH to which the coverage level belongs is determined.
The method according to claim 34, wherein the pre-configured resource configuration information comprises at least one of the following:

The starting position of the subcarrier of the coverage level to which it belongs; or,

Number of subcarriers; or,

Time domain start position; or,

The number of consecutive time slots on the time domain; or,

The number of PDCCHs.
The method according to claim 34 or claim 35, wherein if the self-coverage level belongs to the second specified coverage level, the reference signal sequence is detected, and the time-frequency resource information of the PDCCH to which the coverage level belongs is determined. include,

Determining, according to the detected reference signal sequence, the resource configuration information of the PDCCH of the coverage level to which the self belongs, from the correspondence between the pre-configured reference signal sequence and the PDCCH resource;

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 method according to claim 25 or 30, wherein the time-frequency resource information of the respective coverage levels in the PDCCH region comprises time-frequency resource location information occupied by a coverage level belonging to a first specified coverage level. And at least one of time-frequency resource location information occupied by the coverage levels belonging to each of the second specified coverage levels.
The method according to any one of claims 25 to 37, wherein the PDCCH region configuration information according to the physical downlink control channel and the time-frequency resources in the PDCCH region according to respective coverage levels Information, the time-frequency resource information of the PDCCH that determines the coverage level of the self includes:

Determining, in addition to the self-coverage level in the PDCCH region, the time-frequency resource information in the PDCCH region and the PDCCH region configuration information, according to the received time-frequency resource information in the PDCCH region and the received coverage level. The remaining time-frequency resource information that is not occupied by the coverage level and the time-frequency resource information occupied by the first specified coverage level.
The method according to claim 32, wherein the transmission parameter of the PCFICH comprises at least one of the following information:

Modulation mode of the PCFICH; or

The code rate of the PCFICH; or,

The number of repetitions of the PCFICH.
The method according to claim 32, wherein the time-frequency resource location information of the PCFICH comprises at least one of the following information:

The subcarrier starting position of the PCFICH; or,

The number of subcarriers of the PCFICH; or,

The time domain starting position of the PCFICH; or,

The number of consecutive time slots of the PCFICH in the time domain.
The method according to claim 25, wherein the method further comprises: determining, according to the received time-frequency resource information carried by the PCFICH on the plurality of consecutive subframes, a PDCCH region configuration on the same subframe. information.
The method of claim 40 wherein the time domain start position of the PCFICH is the first time slot of each subframe.
The method of claim 40 wherein said PCFICH is in the time domain The number of consecutive time slots is determined by the frequency reuse factor.
The method of claim 32 wherein the transmission parameters of the PCFICH are determined by a frequency reuse factor.
The method according to claim 40, wherein 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 method according to claim 25, wherein the time-frequency resource information of each coverage level in the PDCCH region comprises at least one of the following:

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 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 continuous frequency domain length of the PDCCH of each coverage level in the frequency domain; or

The number of PDCCHs of the respective coverage levels; or,

The PDCCH of each coverage level occupies a bitmap of resources.
The method of claim 25 wherein:

Each coverage level adopts a time domain priority arrangement manner in the PDCCH region; or

Each coverage level adopts a frequency domain priority allocation 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 method of claim 47, wherein

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 device, comprising:

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 received by the receiving module, 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 apparatus according to claim 49, wherein the determining module is further configured to: according to the PDCCH area configuration information and the pre-configured fourth specified coverage level, if the self coverage level belongs to a fourth specified coverage level The time-frequency resource information of the PDCCH in the PDCCH region is determined, and the time-frequency resource information of the PDCCH of the self-coverage level is determined.
The apparatus according to claim 50, wherein the time-frequency resource information of each coverage level of the fourth designated coverage level in the PDCCH area is pre-configured.
The apparatus according to claim 50, wherein the time-frequency resource information in the PDCCH region of each coverage level of the fourth designated coverage level is carried by the broadcast channel PBCH.
The apparatus according to claim 49, wherein the configuration information of the PCFICH is carried by the PBCH.
The apparatus according to claim 49, wherein the EPDCCH region configuration information comprises:

Time-frequency resources of EPDCCH of each coverage level in the third specified coverage level in even subframes Information; or,

a starting time domain position of an EPDCCH of each coverage level in the third specified coverage level and a number of persistent time slots in the time domain; or

The starting frequency domain position of the EPDCCH of each coverage level in the third specified coverage level and the continuous frequency domain length in the frequency domain; or

The number of consecutive time slots of the EPDCCH of each coverage level in the third specified coverage level in the time domain; or

a continuous frequency domain length of the EPDCCH of each coverage level in the third specified coverage level 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 is occupied.
The apparatus of claim 50 wherein there is no intersection between said third specified coverage level and said fourth specified coverage level.
The apparatus according to claim 49, wherein the PCFICH comprises a plurality of fields, 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 third designation. Time-frequency resource information for each coverage level in the coverage level.
The apparatus according to claim 49, wherein the determining module is configured to: time-frequency resources occupied by the EPDCCH indicated by the EPDCCH region configuration information according to the EPDCCH region configuration information received by the receiving module 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, comprising:

Receiving a physical layer control signaling format indication channel PCFICH, where the PCFICH carries an enhanced physical downlink control channel EPDCCH region configuration information;

Determining 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;

Receiving the physical downlink control channel PDCCH of the self-coverage level on the time-frequency resource indicated by the determined time-frequency resource information of the EPDCCH.
The method of claim 58, wherein the method further comprises:

If the self-coverage level belongs to the fourth specified coverage level, determining the self according to the physical downlink control channel PDCCH region configuration information and the pre-configured time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH region. Time-frequency resource information of the PDCCH of the coverage level.
The method according to claim 58, wherein the time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH region is pre-configured.
The method according to claim 58, wherein 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 method according to claim 58, wherein the configuration information of the PCFICH is carried by the PBCH.
The method according to claim 58, wherein the EPDCCH region configuration information comprises:

Time-frequency resource information of the EPDCCH of each coverage level in the third specified coverage level in the even subframe; or

The starting time domain position of the EPDCCH of each coverage level in the third specified coverage level and The number of consecutive time slots on the time domain; or,

The starting frequency domain position of the EPDCCH of each coverage level in the third specified coverage level and the continuous frequency domain length in the frequency domain; or

The number of consecutive time slots of the EPDCCH of each coverage level in the third specified coverage level in the time domain; or

a continuous frequency domain length of the EPDCCH of each coverage level in the third specified coverage level 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 is occupied.
The method of claim 59 wherein there is no intersection between said third specified coverage level and said fourth specified coverage level.
The method according to claim 58, wherein the PCFICH comprises a plurality of fields, 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 third designation. Time-frequency resource information for each coverage level in the coverage level.
The method according to claim 58, wherein the determining the time-frequency resource information of the EPDCCH of the self-coverage level according to the EPDCCH region configuration information comprises:

Determining time-frequency resources occupied by the PDCCH, the PCFICH, and the PBCH from the time-frequency resources occupied by the EPDCCH indicated by the EPDCCH region configuration information, and obtaining the remaining time-frequency resources, according to the EPDCCH region configuration information;

In the remaining time-frequency resources, time-frequency resource information of the EPDCCH of the self-coverage level is determined.
An information transmission device, comprising:

And 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 apparatus according to claim 67, wherein the configuration information of the PCFICH is carried over a broadcast channel PBCH.
The apparatus according to claim 67, wherein the PDCCH region configuration information is carried by a PBCH.
The apparatus according to claim 67, wherein the PDCCH region configuration information comprises at least one of the following information:

Time-frequency resource location information of the PDCCH region; or

The number of coverage levels included in the PDCCH region; or,

Transmission parameters of the respective coverage levels PDCCH.
The apparatus according to claim 70, wherein the PDCCH region time-frequency resource location information comprises at least one of the following information:

a subcarrier starting position of the PDCCH region; or

The number of subcarriers of the PDCCH region; or,

a time domain start position of the PDCCH region; or,

The number of consecutive time slots of the PDCCH region in the time domain.
The apparatus according to claim 70, wherein the transmission parameters of the respective coverage level PDCCHs comprise at least one of the following information:

Modulation mode of the PDCCH of each coverage level; or

Encoding code rate of the PDCCH of each coverage level; or

The number of repetitions of the PDCCH of each coverage level.
The apparatus according to claim 67, wherein said 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 apparatus according to claim 67 or 69 or 73, wherein the configuration information of the PCFICH includes at least one of the following information:

Transmission parameters of the PCFICH; or

Time-frequency resource location information of the PCFICH; or

The coverage level number belonging to the first specified coverage level; or

The coverage level number belonging to the second specified coverage level.
The apparatus according to claim 73, wherein 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 apparatus according to claim 67, wherein the time-frequency resource information of each coverage level in the PDCCH region comprises time-frequency resource location information occupied by a coverage level belonging to a first specified coverage level and belongs to At least one of time-frequency resource location information occupied by the coverage level of the second specified coverage level.
The apparatus according to claim 74, wherein the transmission parameter of the PCFICH comprises at least one of the following information:

Modulation mode of the PCFICH; or

The code rate of the PCFICH; or,

The number of repetitions of the PCFICH.
The apparatus according to claim 74, wherein the time-frequency resource location information of the PCFICH comprises at least one of the following information:

The subcarrier starting position of the PCFICH; or,

The number of subcarriers of the PCFICH; or,

The time domain starting position of the PCFICH; or,

The number of consecutive time slots of the PCFICH in the time domain.
The apparatus according to claim 67, wherein the sending module is configured to send the PCFICH on a plurality of consecutive subframes, where time-frequency resource information carried by the PCFICH on the plurality of consecutive subframes is used Indicates PDCCH region configuration information on the same subframe.
The apparatus according to claim 78, wherein the time domain start position of the PCFICH is the first time slot of each subframe.
The apparatus of claim 78 wherein the number of consecutive time slots of the PCFICH in the time domain is determined by a frequency reuse factor.
The apparatus of claim 74 wherein the transmission parameters of the PCFICH are determined by a frequency reuse factor.
The apparatus according to claim 78, wherein 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 apparatus according to claim 67, wherein the time-frequency resource information of each coverage level in the PDCCH region comprises at least one of the following:

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 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 continuous frequency domain length of the PDCCH of each coverage level in the frequency domain; or

The number of PDCCHs of the respective coverage levels; or,

The PDCCH of each coverage level occupies a bitmap of resources.
The device according to claim 67, wherein

Each coverage level adopts a time domain priority arrangement manner in the PDCCH region; or

Each coverage level adopts a frequency domain priority allocation 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 device according to claim 67, wherein

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, comprising:

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 method according to claim 87, wherein the configuration information of the PCFICH is carried over a broadcast channel PBCH.
The method according to claim 87, wherein the PDCCH region configuration information is carried by a PBCH.
The method according to claim 87, wherein said PDCCH region configuration letter The information includes at least one of the following information:

Time-frequency resource location information of the PDCCH region; or

The number of coverage levels included in the PDCCH region; or,

Transmission parameters of the respective coverage levels PDCCH.
The method according to claim 90, wherein the PDCCH region time-frequency resource location information comprises at least one of the following information:

a subcarrier starting position of the PDCCH region; or

The number of subcarriers of the PDCCH region; or,

a time domain start position of the PDCCH region; or,

The number of consecutive time slots of the PDCCH region in the time domain.
The method according to claim 90, wherein the transmission parameters of the respective coverage level PDCCHs comprise at least one of the following information:

Modulation mode of the PDCCH of each coverage level; or

Encoding code rate of the PDCCH of each coverage level; or

The number of repetitions of the PDCCH of each coverage level.
The method according to claim 87, wherein said 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 method according to claim 87 or 89 or 93, wherein the configuration information of the PCFICH comprises at least one of the following information:

Transmission parameters of the PCFICH; or

Time-frequency resource location information of the PCFICH; or

The coverage level number belonging to the first specified coverage level; or

The coverage level number belonging to the second specified coverage level.
The method according to claim 93, wherein 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 method according to claim 87 or 92, wherein the time-frequency resource information of the respective coverage levels in the PDCCH region comprises time-frequency resource location information occupied by a coverage level belonging to a first specified coverage level. And at least one of time-frequency resource location information occupied by the coverage levels belonging to each of the second specified coverage levels.
The method of claim 94, wherein the transmission parameter of the PCFICH comprises at least one of the following information:

Modulation mode of the PCFICH; or

The code rate of the PCFICH; or,

The number of repetitions of the PCFICH.
The method according to claim 94, wherein the time-frequency resource location information of the PCFICH comprises at least one of the following information:

The subcarrier starting position of the PCFICH; or,

The number of subcarriers of the PCFICH; or,

The time domain starting position of the PCFICH; or,

The number of consecutive time slots of the PCFICH in the time domain.
The method according to claim 87, wherein the transmitting the physical control format indication channel PCFICH comprises:

Transmitting the PCFICH on a plurality of consecutive subframes carried by the PCFICH on the plurality of consecutive subframes The time-frequency resource information of the band is used to indicate PDCCH region configuration information on the same subframe.
The method of claim 98, wherein the time domain start position of the PCFICH is the first time slot of each subframe.
The method of claim 98 wherein the number of persistent time slots of the PCFICH in the time domain is determined by a frequency reuse factor.
The method of claim 94 wherein the transmission parameters of the PCFICH are determined by a frequency reuse factor.
The method according to claim 98, wherein 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 method according to claim 87, wherein the time-frequency resource information of each coverage level in the PDCCH region comprises at least one of the following:

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 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 continuous frequency domain length of the PDCCH of each coverage level in the frequency domain; or

The number of PDCCHs of the respective coverage levels; or,

The PDCCH of each coverage level occupies a bitmap of resources.
The method of claim 87, wherein

Each coverage level adopts a time domain priority arrangement manner in the PDCCH region; or

Each coverage level adopts a frequency domain priority allocation 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 method of claim 87, wherein

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 device, comprising:

And 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 apparatus according to claim 107, wherein the time-frequency resource information in the PDCCH region of each coverage level of the fourth designated coverage level is pre-configured.
The apparatus according to claim 108, wherein 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 apparatus according to claim 107, wherein the configuration information of the PCFICH is carried by the PBCH.
The device according to claim 107, wherein the EPDCCH region configuration information comprises:

Time-frequency resource information of the EPDCCH of each coverage level in the third specified coverage level in the even subframe; or

a starting time domain position of an EPDCCH of each coverage level in the third specified coverage level and a number of persistent time slots in the time domain; or

The starting frequency domain position of the EPDCCH of each coverage level in the third specified coverage level and the continuous frequency domain length in the frequency domain; or

The number of consecutive time slots of the EPDCCH of each coverage level in the third specified coverage level in the time domain; or

a continuous frequency domain length of the EPDCCH of each coverage level in the third specified coverage level 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 is occupied.
The apparatus of claim 108 wherein there is no intersection between said third specified coverage level and said fourth specified coverage level.
The apparatus according to claim 107, wherein the PCFICH includes a plurality of fields, 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 third designation. Time-frequency resource information for each coverage level in the coverage level.
An information transmission method, comprising:

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 method according to claim 114, wherein the time-frequency resource information of each coverage level of the fourth specified coverage level in the PDCCH region is pre-configured.
The method according to claim 115, wherein 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 method according to claim 114, wherein the configuration information of the PCFICH is carried by the PBCH.
The method according to claim 114, wherein the EPDCCH region configuration information comprises:

Time-frequency resource information of the EPDCCH of each coverage level in the third specified coverage level in the even subframe; or

a starting time domain position of an EPDCCH of each coverage level in the third specified coverage level and a number of persistent time slots in the time domain; or

The starting frequency domain position of the EPDCCH of each coverage level in the third specified coverage level and the continuous frequency domain length in the frequency domain; or

The number of consecutive time slots of the EPDCCH of each coverage level in the third specified coverage level in the time domain; or

a continuous frequency domain length of the EPDCCH of each coverage level in the third specified coverage level 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 is occupied.
The method of claim 115 wherein there is no intersection between said third specified coverage level and said fourth specified coverage level.
The method according to claim 114, wherein the PCFICH comprises a plurality of fields, 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 third designation. Time-frequency resource information for each coverage level in the coverage level.