WO2015109845A1 - Method for sending/receiving repeated information, base station and user equipment - Google Patents

Abstract

Disclosed are a method for sending/receiving repeated information, a base station and a user equipment. The method for sending repeated information comprises: sending to a user equipment, by a base station, a physical layer signalling or a high layer signalling which indicates repeated information, wherein the repeated information is used for adjusting the number of times of transmission of a channel, and the repeated information comprises at least one of the following: a repetition level, the number of times of repetition and a coverage level. By means of the present invention, the problem of wasting of resources or deficient number of times of repetition caused by transmitting a corresponding channel using the fixed number of times of repeat transmission is solved, thereby avoiding wasting of resources and improving the coverage performance of a user equipment.

Description

Repeated information transmission and reception method, base station and user equipment Technical field

The present invention relates to the field of communications, and in particular to a method for transmitting repeated information, receiving repeated information, and a base station and a user equipment.

Background technique

Machine Type Communication (MTC) user equipment (User Equipment, also referred to as UE, also referred to as user equipment or terminal), also known as Machine to Machine (M2M) user communication equipment, It is currently the main application form of the Internet of Things. In recent years, due to the high spectrum efficiency of Long-Term Evolution (LTE)/Long-Term Evolution Advance (LTE-Advance or LTE-A), more and more mobile operations LTE/LTE-A is selected as the evolution direction of broadband wireless communication systems; MTC multi-class data services based on LTE/LTE-A will also be more attractive.

In the MTC application terminal, there is a type of terminal that has a significant drop in coverage performance due to its location or its own characteristics. For example, smart meter reading MTC terminals are mostly installed in a low coverage performance environment such as a basement. They mainly send packet data, have low data rate requirements, and can tolerate large data transmission delays. The physical downlink traffic channel (Physical Downlink Share Channel, also referred to as PDSCH, also referred to as physical downlink shared channel) and physical uplink traffic channel (Physical Uplink Share Channel, PUSCH for short) are also called The physical uplink service channel, the physical downlink control channel (PDCCH), and the physical uplink control channel (PDCCH) can improve the coverage performance by repeatedly transmitting the same information. 1 is a schematic diagram showing a time-frequency domain structure of a control channel in one subframe of an LTE system in the related art, and FIG. 1 shows locations of a physical downlink control channel and a physical downlink traffic channel in a subframe.

In the related art, a fixed number of repeated transmissions is used to transmit a corresponding channel to improve coverage performance. However, the inventor found in the research process that because repeated transmissions take up a large amount of resources, and the number of repetitions corresponding to different coverage enhancement requirements is different, if the transmission is always performed according to a repetition number, when the channel conditions change, There will be repeated waste of resources or insufficient number of repetitions.

An effective solution has not been proposed in view of the problem of waste of resources or insufficient number of repetitions caused by transmission of corresponding channels by a fixed number of repeated transmissions in the related art.

Summary of the invention

The embodiment of the invention provides a method for transmitting repeated information, repeating information, and a base station and a user equipment, so as to at least solve the problem of insufficient resource waste or insufficient repetition caused by transmitting a corresponding channel by using a fixed number of repeated transmissions in the related art.

According to an aspect of the embodiments of the present invention, a method for transmitting a repeated information includes: transmitting, by a base station, physical layer signaling or higher layer signaling indicating repeated information to a user equipment, where the repeated information is used to adjust channel transmission The number of times, the repetition information includes at least one of the following: a repetition level, a repetition number, and an coverage level.

Optionally, the user equipment comprises: a machine type communication device.

Optionally, the channel includes at least one of the following: a downlink control channel, an uplink control channel, a downlink traffic channel, and an uplink traffic channel.

Optionally, in the case that the base station sends the repeated information by using the physical layer signaling, the physical layer signaling includes one of the following: a bit field in the enhanced downlink control information, and a newly added downlink control. The bit field in the information, the signaling that is multiplexed and transmitted by the multiplex transmission technology and the downlink control information.

Optionally, in a case that the base station sends the repeated information by using physical layer signaling, the starting subframe for sending the physical layer signaling includes one of the following: a predetermined subframe, and a child corresponding to the current repetition level. The frame, the subframe corresponding to the repetition level to be adjusted.

Optionally, the predetermined subframe includes: subframe 0 of the radio frame, or a subframe that satisfies (k+10×SFN) mod C=0; wherein k=1, 2, 3...; SFN represents wireless The system frame number of the frame; mod is a modulo operation; C is a positive integer, indicating a predetermined period; the subframe corresponding to the current repetition level includes: the same starting subframe as the control channel of the current repetition level; The subframe corresponding to the repetition level to be adjusted includes: the same starting subframe as the control channel of the repetition level to be adjusted.

Optionally, the base station sends the physical layer signaling or the high layer signaling by sending or sending multiple groups of repeated transmissions within a predetermined time window.

Optionally, in a case that the base station sends the physical layer signaling or the high layer signaling multiple times, the base station sends the physical layer signaling or the high layer signaling in a predetermined sending period.

Optionally, after the base station sends the physical layer signaling or the high layer signaling to the user equipment, the method further includes: the base station receiving, by the user equipment, the physical layer signaling or Feedback of the high layer signaling.

Optionally, one of the physical layer signaling or the high layer signaling is used to adjust a number of transmissions of one channel or a group of channels in the channel, where the set of channels includes at least two of the channels. The combination of channels.

Optionally, the repetition information is effective after the base station sends the physical layer signaling or the high layer signaling, or the repeated information is sent by the physical layer signaling or the high layer signaling. After the predetermined time window is valid, the repeated information is valid from the next transmission period in which the physical layer signaling or the high layer signaling is sent, or the base station receives the physical layer information from the user equipment. The feedback information of the high-level signaling or the high-level signaling is effective.

Optionally, in a case that the channel includes a downlink control channel, the repetition information is further configured to: adjust all or a part of the subframe set if the number of transmissions of the downlink control channel is kept unchanged. An aggregation level of the downlink control channel; or, adjusting a number of transmissions of the downlink control channel of a specific aggregation level on the all or part of the subframe set, wherein the specific aggregation level includes one or more aggregation levels.

Optionally, the base station sends the repeated information to the user equipment only when the current repetition level is adjusted to a smaller repetition level, where the smaller repetition level corresponds to the number of transmissions being smaller than the The number of transmissions corresponding to the current repeat level.

Optionally, adjusting the number of transmissions of the channel comprises: adjusting the number of transmissions of the channel on a partial subframe set for transmitting the channel.

Optionally, after adjusting the number of transmissions of the channel on the partial subframe set, adjusting the number of transmissions of the channel further includes determining, by using at least one of the following, a partial subframe set The channel transmission is stable: receiving data through the channel on the partial subframe set, receiving acknowledgement information indicating that the terminal response is stable, and adjusting the channel on the partial subframe set. Resetting the number of transmissions after the number of transmissions; adjusting the number of transmissions of the channel on all or part of other subframe sets, wherein the other subframes include: not adjusting the all subframe sets of the transmission channel The set of subframes for the number of transmissions.

Optionally, in a case that the repetition information is a repetition level, before the base station sends the physical layer signaling or the high layer signaling to the user equipment, the method further includes: determining, by the base station And sending, by the base station, a repetition level used by the physical layer signaling or the high layer signaling, where the base station sends the physical layer signaling or the high layer signaling to the user equipment by using a determined repetition level.

Optionally, the base station determines that the repetition level used by the physical layer signaling or the high layer signaling includes at least one of: the base station determines that a current repetition level is to send the physical layer signaling or a repetition level used by the higher layer signaling; the base station determines a maximum repetition level as a repetition level used to transmit the physical layer signaling or the higher layer signaling; adjusting the current repetition level to a smaller repetition level in the case of, Determining, by the base station, that the current repetition level is a repetition level used by the physical layer signaling or the high layer signaling; and in a case of adjusting the current repetition level to a larger repetition level, the base station Determining that the maximum repetition level is a repetition level used for transmitting the physical layer signaling or the high layer signaling; wherein the maximum repetition level is determined according to a configured maximum coverage level; the smaller repetition level The number of transmissions corresponding to the current repetition level, the larger repetition level, and the maximum repetition level respectively increases in a trend.

According to another aspect of the present invention, a method for receiving repeated information is provided, including: receiving, by a user equipment, physical layer signaling or higher layer signaling indicating repeated information, where the repeated information is used to adjust transmission of a channel The number of times, the repetition information includes at least one of the following: a repetition level, a repetition number, and an coverage level.

According to another aspect of the present invention, a base station is provided, including: a transceiver station, configured to send physical layer signaling or higher layer signaling indicating repeated information to a user equipment, where the repeated information is used for Adjusting the number of transmissions of the channel, the repeated information includes at least one of the following: a repetition level, a repetition number, and an coverage level.

According to another aspect of the embodiments of the present invention, a user equipment is provided, including: a receiver, configured to receive physical layer signaling or higher layer signaling indicating repeated information, where the repeated information is used to adjust a channel The number of transmissions, the repeated information includes at least one of the following: a repetition level, a repetition number, and an coverage level.

According to the embodiment of the present invention, the base station sends physical layer signaling or high layer signaling indicating the repeated information to the user equipment, where the repeated information is used to adjust the number of transmissions of the channel, and the repeated information includes at least one of the following: repetition level, repetition The number of times and the coverage level solve the problem of waste of resources or insufficient number of repetitions caused by the transmission of the corresponding channel by a fixed number of repeated transmissions, thereby avoiding waste of resources and improving the coverage performance of the user equipment.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram showing a time-frequency domain structure of a control channel in one subframe of an LTE system in the related art;

2a is a first schematic flowchart 1 of a method for transmitting repeated information according to an embodiment of the present invention;

2b is a second schematic flowchart of a method for transmitting a repeated information according to an embodiment of the present invention;

3 is a schematic flow chart of a method for receiving repeated information according to an embodiment of the present invention;

4 is a schematic diagram of a preferred structure of a base station according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a preferred structure of a user equipment according to an embodiment of the present invention; FIG.

6 is a flow chart showing a method of adjusting a repetition level according to the preferred embodiment;

FIG. 7 is a schematic flowchart diagram of a method for adjusting repetition information of a downlink control channel according to the preferred embodiment.

detailed description

It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

The steps illustrated in the flowchart of the figures may be performed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, may differ from this The steps shown are performed in the order shown or described.

This embodiment provides a method for sending repeated information, and the process includes the following steps:

In step S202, the base station sends physical layer signaling or high layer signaling indicating the repeated information to the user equipment, where the repeated information is used to adjust the number of transmissions of the channel, and the repeated information includes at least one of the following: repetition level, repetition number, coverage grade.

Through the above steps, the base station sends the repeated information to the user equipment by using the physical layer signaling or the high layer signaling, so that the user equipment and the base station can adjust the transmission times of the channel according to the repetition level, the repetition number, and the coverage level included in the repeated information, thereby The problem of waste of resources or insufficient repetition caused by transmitting the corresponding channel by using a fixed number of repeated transmissions can be solved, thereby avoiding waste of resources and improving coverage performance of the user equipment.

Optionally, the foregoing repeated information is determined by the base station according to the coverage performance of the user equipment, where the coverage level is used to indicate the coverage performance of the base station. In some embodiments, different repetition levels and/or repetition times and/or coverage levels have a corresponding correspondence with the number of transmissions, so that the user equipment can be based on the repetition level, the number of repetitions, and the coverage level in the repeated information. At least one information determines the number of transmissions of the corresponding channel.

Optionally, the user equipment comprises: a machine type communication device or other user equipment that can support channel repeat transmission.

Optionally, in the foregoing step S202, the channel that can be adjusted includes at least one of the following: a downlink control channel, an uplink control channel, a downlink traffic channel, and an uplink traffic channel. For example, the channel that can be adjusted between the base station and the user equipment is a downlink control channel and an uplink control channel, and is sent by the base station to the user equipment. The repetition information including the repetition level and/or the repetition number and/or the coverage level, thereby adjusting the number of transmissions of the downlink control channel and the uplink control channel; or, in physical layer signaling or higher layer signaling, carrying the channel to be adjusted The identification of the channel to achieve the adjustment of the number of transmissions of the corresponding identified channel. The physical layer signaling or the high-layer signaling may further carry identifiers of multiple channels and repetition levels and/or repetition times and/or coverage levels corresponding to each identifier, so as to perform different transmission times on multiple channels respectively. Adjustment.

Optionally, one physical layer signaling or higher layer signaling may adjust the number of transmissions of one channel or a group of channels, for example, one physical layer signaling or higher layer signaling adjusts a downlink control channel, an uplink control channel, and a downlink traffic channel. The number of transmissions of one channel in the uplink traffic channel; for example, one physical layer signaling or higher layer signaling may respectively combine the combination of at least two channels of the downlink control channel, the uplink control channel, the downlink traffic channel, and the uplink traffic channel Adjusting, wherein the combination of at least two channels comprises: a downlink control channel and an uplink control channel; a downlink control channel and an uplink traffic channel; a downlink control channel and a downlink traffic channel; an uplink control channel and a downlink traffic channel; an uplink control channel and an uplink service Channel; downlink traffic channel and uplink traffic channel; uplink control channel, downlink traffic channel and uplink traffic channel; downlink control channel, downlink traffic channel and uplink traffic channel; downlink control channel, uplink control channel and uplink traffic channel; downlink control channel, Uplink control Channel and a downlink traffic channel; downlink channel, an uplink control channel, downlink traffic channel and uplink traffic channel.

Optionally, the physical layer signaling may be one of the following: a bit field in the enhanced downlink control information, a bit field in the newly added downlink control information, and a multiplexing control information and a downlink control information. Use the signaling of the transmission. The bit field in the enhanced downlink control information includes a bit field in the format of the Downlink Cotrol Information (DCI) format, and the bit field in the newly added downlink control information includes the new DCI format. The bit field in . The bit field in the existing DCI format includes at least one of the following: adding a new bit field and reinterpreting the existing bit field.

Optionally, in a case that the base station sends the repeated information by using physical layer signaling, the starting subframe for transmitting the physical layer signaling includes: a predefined value, a subframe determined according to a current repetition level, and determined according to different repetition levels. The subframe, that is, the starting subframe for transmitting the physical layer signaling includes one of the following: a predetermined subframe, a subframe corresponding to the current repetition level, and a subframe corresponding to the repetition level to be adjusted.

Optionally, the foregoing predetermined subframe includes: subframe 0 of the radio frame, or a subframe that satisfies (k+10×SFN) mod C=0; wherein k=1, 2, 3...; SFN represents wireless The system frame number of the frame (SFN); mod is the modulo operation; C is a positive integer, indicating the predetermined period.

Optionally, the subframe corresponding to the current repetition level includes: the same starting subframe as the control channel of the current repetition level.

Optionally, the subframe corresponding to the repetition level to be adjusted includes: the same starting subframe as the control channel of the repetition level to be adjusted.

Optionally, the sending times of the physical layer signaling or the high layer signaling by the base station by using the physical layer signaling include: sending once, or multiple sets of repeated transmissions within a predetermined time window, for example, including k in the time window M N repeated transmissions, where M, k, and N are positive integers.

Optionally, in a case that the base station sends the physical layer signaling or the high layer signaling to the user equipment multiple times, the base station sends multiple physical layer signaling or high layer signaling in a predetermined sending period.

FIG. 2 is a first schematic flowchart of a method for transmitting a repeated information according to an embodiment of the present invention. As shown in FIG. 2a, optionally, in the case that ACK/NACK feedback is performed after the user equipment receives the physical layer signaling, After S202, the process further includes:

Step S204: The base station receives feedback from the user equipment on physical layer signaling or higher layer signaling, such as ACK/NACK feedback.

Optionally, the repeated information may be effective immediately after the base station sends the physical layer signaling or the high layer signaling, or the repeated information is sent by the physical layer signaling or the high layer signaling and passes through a predetermined time window (for example, the time window M described above). After the entry takes effect, or the repeated information is valid from the next transmission period of sending physical layer signaling or higher layer signaling (for example, the predetermined transmission period described above), or the base station receives feedback from the user equipment on physical layer signaling or higher layer signaling. The information (such as the ACK/NACK feedback described above) comes into effect. After the duplicate information takes effect, the base station and the user equipment respectively adjust the corresponding transmission times of the corresponding channels indicated in the repeated information.

Optionally, in the case that the channel to be adjusted includes a downlink control channel, the repeated information used to adjust the downlink control channel may further carry information related to aggregation level, and the repeated information may also be used to: maintain downlink control Adjusting the aggregation level of the downlink control channel on all or part of the subframe set when the number of transmissions of the channel is unchanged; or adjusting the number of transmissions of the downlink control channel of a specific aggregation level on all or part of the subframe set, where The aggregation level includes one or more aggregation levels.

Optionally, the base station sends the repeated information to the user equipment only when the current repetition level is adjusted to a smaller repetition level, where the smaller repetition level corresponds to the number of transmissions corresponding to the number of transmissions corresponding to the current repetition level.

Optionally, adjusting the number of transmissions of the channel includes: adjusting a number of transmissions of the channel on the partial subframe set for the transmission channel.

Optionally, after adjusting the number of repetitions of the channel on the partial subframe set, the unadjusted subframe set may be adjusted to be adjusted to a repetition level adjusted with the partial subframe set. For example, after adjusting the number of transmissions of the channel on the partial subframe set, determining channel transmission stability on the partial subframe set by at least one of the following: receiving data through the channel on the partial subframe set, and receiving the peer response Representing the transmission stability confirmation information, after adjusting the number of transmissions of the channel on the partial subframe set, reaching a predetermined interval time; adjusting the number of transmissions of the channel on all or part of other subframe sets, wherein the other subframes include: all of the transmission channels A collection of subframes in the subframe set that have not been adjusted for the number of transmissions.

2b is a second schematic flowchart of a method for transmitting a repeated information according to an embodiment of the present invention. As shown in FIG. 2b, optionally, in the case that the repeated information is a repetition level, before the step S202, the process further includes the following steps. :

In step S200, the base station determines a repetition level used for transmitting physical layer signaling or higher layer signaling.

In step S202, the base station sends physical layer signaling or higher layer signaling to the user equipment by using the determined repetition level.

Optionally, adjusting the repetition level used in signaling transmission may include at least one of: transmitting adjustment signaling at a current repetition level, and transmitting adjustment signaling at a maximum repetition level; wherein, from a large repetition level to a small repetition level In the adjustment, it is preferred to transmit the adjustment signaling at the current repetition level, and to transmit the adjustment signaling at the maximum repetition level when the small repetition level is adjusted to a large repetition level. The maximum repetition level may be the maximum coverage level configured by the base station, or the maximum coverage level configured by the system by default.

For example, in step S200, the base station determines that the repetition level used for transmitting physical layer signaling or higher layer signaling includes at least one of the following: the base station determines that the currently used repetition level is a repetition used for transmitting physical layer signaling or higher layer signaling. Level; the base station determines that the maximum repetition level is a repetition level used for transmitting physical layer signaling or higher layer signaling; in the case of adjusting the currently used repetition level to a smaller repetition level, the base station determines that the currently used repetition level is a transmission. The repetition level used by physical layer signaling or higher layer signaling; in the case of adjusting the currently used repetition level to a larger repetition level, the base station determines that the maximum repetition level is used for transmitting physical layer signaling or higher layer signaling. The repetition level is determined according to the configured maximum coverage level; the number of transmissions corresponding to the smaller repetition level, the current repetition level, the larger repetition level, and the maximum repetition level respectively increases.

The embodiment further provides a method for receiving the repeated information. The process of the method for receiving the repeated information includes: receiving, by the user equipment, physical layer signaling or high layer signaling indicating repeated information, where the repeated information is used to adjust the number of transmissions of the channel, The repeated information includes at least one of the following: a repetition level, a repetition number, and an coverage level.

Optionally, the user equipment is a machine type communication device.

Optionally, the channel includes at least one of the following: a downlink control channel, an uplink control channel, a downlink traffic channel, and an uplink traffic channel.

Optionally, the physical layer signaling includes one of the following: a bit field in the enhanced downlink control information, a bit field in the added downlink control information, and signaling that is multiplexed and transmitted by using the multiplexing transmission technology and the downlink control information.

Optionally, the user equipment receives physical layer signaling by blind detection.

FIG. 3 is a schematic flowchart of a method for receiving a repeated information according to an embodiment of the present invention. Optionally, the process includes the following steps:

Step S302: The user equipment receives the physical layer signaling or the high layer signaling indicating the repeated information, where the repeated information is used to adjust the number of transmissions of the channel, and the repeated information includes at least one of the following: a repetition level, a repetition number, and an coverage level;

Step S304, the user equipment sends feedback to the base station for physical layer signaling or higher layer signaling.

Optionally, one physical layer signaling or higher layer signaling is used to adjust the number of transmissions of one channel or a group of channels in the channel, where the group of channels includes a combination of at least two channels in the channel.

Optionally, the repeated information takes effect after the base station sends the physical layer signaling or the high layer signaling, or the repeated information takes effect after the physical layer signaling or the high layer signaling is sent and passes the predetermined time window, or the repeated information is sent from the physical The next transmission period of the layer signaling or the high layer signaling takes effect, or the base station comes into effect after receiving the feedback information of the user equipment to the physical layer signaling or the high layer signaling.

Optionally, if the channel to be adjusted for the number of transmissions includes the downlink control channel, the repeated information is further used to: adjust the downlink control on all or part of the subframe set while maintaining the number of transmission times of the downlink control channel unchanged. The aggregation level of the channel; or, the number of transmissions of the downlink control channel of a specific aggregation level on all or part of the subframe set, wherein the specific aggregation level includes one or more aggregation levels.

Optionally, adjusting the number of transmissions of the channel includes: adjusting a number of transmissions of the channel on the partial subframe set used for the transmission channel.

Optionally, after adjusting the number of transmissions of the channel on the partial subframe set, adjusting the number of transmissions of the channel further includes determining, by using at least one of the following, channel transmission stability on the partial subframe set: by using the partial subframe set The channel receives the data, receives the acknowledgment information indicating that the transmission is stable, and reaches a predetermined interval after adjusting the number of transmissions of the channel on the partial subframe set; and adjusts the channel on all or part of other subframe sets. The number of transmissions, wherein the other subframes include: a set of subframes of the total number of transmissions in the entire subframe set of the transport channel.

The embodiment further provides a base station, and the base station is configured to implement the foregoing method for transmitting the repeated information. The specific implementation process of the device in the embodiment of the device has been described in detail in the method embodiment, and details are not described herein again.

The base station includes: a transceiver station, configured to send physical layer signaling or high layer signaling indicating repeated information to the user equipment, where the repeated information is used to adjust the number of transmissions of the channel, and the repeated information includes at least one of the following: a repetition level, Number of repetitions, coverage level.

Optionally, the transceiver station is further configured to receive feedback from the user equipment on physical layer signaling or higher layer signaling.

FIG. 4 is a schematic diagram of a preferred structure of a base station according to an embodiment of the present invention. As shown in FIG. 4, optionally, the base station further includes a processor 44 coupled to the transceiver station 42 and configured to determine to send physical layer signaling or a higher layer. The level of repetition used by the signaling.

The embodiment further provides a user equipment, and the base station is used to implement the method for receiving the repeated information. The specific implementation process of the device in the device embodiment has been described in detail in the method embodiment, and details are not described herein.

The user equipment includes: a receiver configured to receive physical layer signaling or higher layer signaling indicating repeated information, where the repeated information is used to adjust the number of transmissions of the channel, and the repeated information includes at least one of the following: a repetition level, a repetition number, Coverage level.

FIG. 5 is a schematic diagram of a preferred structure of a user equipment according to an embodiment of the present invention. As shown in FIG. 5, the user equipment further includes: a transmitter 54 coupled to the receiver 52, configured to send signaling to the physical layer. Or feedback of higher layer signaling to the base station.

Description and description are made below in conjunction with the preferred embodiments.

The preferred embodiment provides a method for adjusting the repetition level, which can be applied to an LTE/LTE-A system.

FIG. 6 is a schematic flowchart of a method for adjusting a repetition level according to the preferred embodiment. As shown in FIG. 6, the method for adjusting a repetition level according to the preferred embodiment includes: in a coverage enhancement scenario, a base station passes physical layer signaling or The high layer signaling adjusts the repetition information of the channel, where the channel includes at least one of the following: a downlink control channel, an uplink control channel, a downlink traffic channel, and an uplink traffic channel. The repeated information includes at least one of the following: a repetition level, a repetition number, and an coverage level.

With the adjustment method provided by the preferred embodiment, the number of repetitions can be adjusted in a real-time manner in a coverage enhancement scenario.

In the above preferred embodiment, the physical layer signaling includes: multiplexing the bit field in the existing DCI format or using the bit field in the new DCI format or multiplexing with the DCI; the bit field in the existing DCI format includes the following: At least one: add a new bit field and reinterpret the existing bit field.

Optionally, the channel adjusted by the base station may be a single channel, and the repetition level of the control channel is as follows: or multiple channels may be adjusted together, such as a control channel and an uplink control channel.

Optionally, the dedicated format is adjusted, that is, the signaling for indicating the repeated information includes an indication field of at least one of the following: an coverage level indication field, a repetition level indication field, and a repetition number indication field.

Optionally, the foregoing physical layer signaling multiplexing the transmission with the DCI includes at least: transmitting the adjustment signaling together with the existing DCI by using a layered modulation technique.

Optionally, in the physical layer signaling, for example, 2 bits can indicate up to 4 repetition levels, as shown in Table 1 and Table 2; 3bit can indicate a maximum of 8 repetition levels, as shown in Table 3; 4bit Indicates the coverage level and the number of repetitions, indicating signaling high and status indications, as shown in Table 4.

Table 1 2bit indicates 3 coverage levels/repetition levels/number of times

index	Level/time
		0	5dB/4 times
1	10dB/20 times
		2	15dB/80 times

The value of a certain coverage level in the table may indicate the maximum supported value of the repetition level corresponding to the index. For example, in Table 1, the index 0 corresponds to the coverage level range (0, 5 dB), and the index 1 corresponds to the coverage level range. (5dB, 10dB), index 2 corresponds to the coverage level range (10dB, 15dB). The following tables are the same.

Table 2 2bit indicates 4 coverage levels/repetition levels/number of times

index	Level/time
		0	0dB/do not repeat
1	5dB/4 times
		2	10dB/20 times
3	15dB/80 times

Table 3 3bit indication coverage level / repetition level / number of times

index	grade
		0	0dB
1	3dB
		2	6dB
3	9dB
		4	12dB
5	15dB

Table 4 The high and low bits of the 4bit signaling indicate the coverage level and the number of repetitions, respectively.

index	grade	repeat times
			0000	0dB	no
0001	0dB	no
			0010	0dB	no
0011	0dB	no
			0100	5dB	2
0101	5dB	3
			0110	5dB	4
0111	5dB	6
			1000	10dB	10
1001	10dB	20
			1010	10dB	30
1011	10dB	40
			1100	15dB	60
1101	15dB	80
			1110	15dB	100
1111	15dB	120

The coverage level may be in decibels (dB) as a unit, and the repetition level has a certain correspondence with the number of repetitions. For example, the higher the repetition level (or coverage level), the corresponding repetition number may be unchanged or higher; or the same A coverage level can correspond to different repetition times depending on the level of repetition.

In the table of the embodiment of the present invention, the “index” may be used to identify different coverage levels, or different repetition levels, or different repetition times; optionally, an index is used to identify the coverage level and the repetition level. And a set of correspondences formed by at least two of the repetition times.

FIG. 7 is a schematic flowchart of a method for adjusting repetition information of a downlink control channel according to the preferred embodiment. As shown in FIG. 7 , optionally, when the channel is a downlink control channel, adjusting the number of repeated transmissions includes: adjusting The aggregation level used when repeating the transmission, the number of repetitions of adjusting the partial aggregation level, the number of repetitions of the aggregation level or the aggregation level on the partial subframe set.

Optionally, adjusting the repetition level of the downlink control channel further includes:

Adjust the aggregation level used in the repeated transmission, that is, change the aggregation level used while changing the number of repetitions, such as the aggregation level (AL) 4 becomes AL8 and the number of repetitions is unchanged;

Adjusting the number of repetitions of a partial aggregation level, where part refers to k aggregation levels, and k belongs to one or more of the sets {1, 2, 4, 8, 16, 32}, such as only adjusting the number of repetitions of AL8;

Adjusting the number of repetitions of the aggregation level or partial aggregation level on a partial subframe set, that is, adjusting the subframe set using repeated transmission, where part refers to m subframe sets, and m belongs to the set {1, 2, 3, 4, . One or more of .., M}, M is a positive integer greater than zero. For example, for a subframe corresponding to an SFN value of 10-20, that is, a subframe set 1, the aggregation level of the subframe set or the number of repetitions of the partial aggregation level is adjusted.

Optionally, adjusting the repetition level of the channel further includes: adjusting the number of repetitions of the channel on the partial subframe set; where the partial subframe set is the same as the above.

Optionally, after adjusting the number of repetitions of the channel on the partial subframe set, the unadjusted subframe set is stabilized and adjusted to a repetition level adjusted with the partial subframe set. After stabilization, it refers to receiving data, or receiving confirmation information, or an interval of X milliseconds, where X is a positive integer, and its value can be flexibly set according to the needs of the system.

Optionally, the number of repetitions of the channel on the partial subframe set is adjusted, such as the first subframe set, and the remaining subframe sets are still repeatedly transmitted according to the current repetition level.

Optionally, the number of repetitions of the channel on the partial subframe set is adjusted, such as the first subframe set, and the remaining subframe sets are still repeatedly transmitted according to the current repetition level. After the first subframe set is adjusted and stabilized, the remaining subframe sets are also adjusted to the same repetition level as the first subframe set.

Optionally, adjusting the repetition level used in signaling transmission includes at least one of: transmitting adjustment signaling at a current repetition level, and transmitting adjustment signaling at a maximum repetition level.

Optionally, when adjusting from a large repetition level to a small repetition level, priority is given to transmitting adjustment signaling at a current repetition level, and from a small repetition level to a large repetition level adjustment, priority is given to transmitting adjustment signaling at a maximum repetition level; The maximum repetition level may be the maximum coverage level configured by the base station, or the maximum coverage level configured by default;

Optionally, the adjustment signaling is only supported from a larger repetition level to a smaller repetition level adjustment.

Optionally, when adjusting from a large repetition level to a small repetition level, priority is given to transmitting adjustment signaling at the current repetition level, such as when there are four repetition levels of 0, 1, 2, and 3, and from repetition level 2 to repetition level 1 When making adjustments, send adjustment adjustment signaling using 20 repetitions corresponding to repetition level 2; from small repetition level to large repetition level When adjusting, it is preferred to send the adjustment signaling with the maximum repetition level. For example, when there are four repetition levels of 0, 1, 2, and 3, and the repetition level 1 is adjusted to the repetition level 2, 80 repetitions corresponding to the repetition level 3 are used. Send adjustment signaling;

Optionally, the sending start subframe of the physical layer signaling includes: a predefined value, determined according to a current repetition level, and determined according to different repetition levels.

The predefined value includes a radio frame subframe 0 or a subframe satisfying (k+10×SFN) mod C=0, and C is a predefined period value.

Wherein, it is determined according to the current repetition level that the same starting subframe is used as the control channel of the current repetition level. Optionally, the physical layer signaling that sends the adjusted repetition level uses the same starting subframe as the control channel of the current coverage level. For example, the starting subframe used by the control channel of the current coverage level is a subframe that satisfies (k+10×SFN) mod N=0, where N is the number of repetitions, and the start of the physical layer signaling for adjusting the repetition level is sent. The subframe also satisfies (k + 10 × SFN) mod N = 0.

Wherein, according to different repetition levels, the initial subframe is determined to correspond to the repetition level to be adjusted. Alternatively, a possible corresponding relationship is: Suppose the number of repetitions of downlink control channel repeat level L _i is N _i, the transmission starting subframe satisfies the physical layer signaling level where repeated adjustment (k + 10 × SFN) mod N _i =0.

Optionally, the number of times the physical layer signaling is sent includes: sending only once, and including k times of repeated transmissions in the time window M. The window length M in the k pieces of N repeated transmissions in the time window M is a value greater than or equal to k×M.

Optionally, the physical layer signaling is sent in a period C, where C is a positive integer, and the value can be flexibly set according to the requirements of the system.

Optionally, the terminal receives ACK/NACK feedback after the physical layer signaling.

Optionally, the effective time of the physical layer signaling includes: immediately after the completion of the signaling, the time window M takes effect, the next cycle C takes effect, and the feedback takes effect after receiving the feedback.

Optionally, when the adjustment signaling is sent only once, the signaling is effective immediately after the completion of the signaling, including the next subframe or the next radio frame; for the adjustment, the window length M (including k times of N repeated transmissions) When the adjustment is made, it can be valid in the next time window M; for the adjustment in the period C, it can be effective in the next period; when there is feedback information, it can be effective after receiving the feedback information.

Optionally, adjusting the repetition level of the channel includes: adjusting one channel by using one physical layer signaling or higher layer signaling, adjusting a combination of channels by using one physical layer signaling or higher layer signaling, where the combination manner includes but is not limited to at least one of the following Ways: {downlink control channel and uplink control channel}, {downlink traffic channel and uplink traffic channel}, {downlink control channel and downlink traffic channel and uplink traffic channel}, {downlink control channel and uplink control channel and downlink traffic channel and A combination of at least two channels, such as an uplink traffic channel}.

Optionally, the terminal determines, according to the measurement, whether the repetition level needs to be adjusted, and if the adjustment is needed, triggers the access process.

Optionally, when the terminal detects the downlink control channel carrying the adjustment signaling, one is detected by the repetition level, and the other is detected by the current repetition level and the maximum repetition level.

Example 1

In the coverage enhancement scenario, the base station adjusts the repetition level/number of times or the coverage level of the downlink control channel through physical layer signaling.

The physical layer signaling adds a new bit field to the existing DCI format to implement indication adjustment; the new bit field includes a repetition level indication field or a repetition number indication field. In physical layer signaling, two repetition levels can be indicated by 2 bits, as shown in Table 5.

Table 5 2bit indicates 3 coverage levels/repetition levels/number of times

index	Level/time
		0	5dB/4 times
1	10dB/20 times
		2	15dB/80 times

The transmission start subframe of the physical layer signaling is determined according to the current repetition level. The physical layer signaling that transmits the adjusted repetition level uses the same starting subframe as the control channel of the current coverage level. The starting subframe used by the current coverage level control channel is a subframe that satisfies (k+10×SFN) mod N=0, where k is the starting subframe and N is the number of repetitions, then the physical layer that adjusts the repetition level is sent. The starting subframe in which the signaling is located also satisfies (k + 10 × SFN) mod N = 0. The physical layer signaling is sent using the current repeat level and is sent only once.

The effective time of the physical layer signaling is effective immediately after the signaling is completed.

Through the implementation of this example, it is possible to make the control channel of repeated transmission in the coverage enhancement scenario can be quickly adjusted when the coverage requirement changes.

Example 2

In the coverage enhancement scenario, the base station adjusts the downlink traffic channel by using high-layer signaling, such as Radio Resource Control (RRC) signaling (including System Information Block (SIB) message). Repeat level/number or coverage level.

The bit field used by the RRC signaling includes a repetition level indication field or a repetition number indication field. In RRC signaling, 2 repetition levels can be indicated by 2 bits, as shown in Table 6.

Table 6 2bit indicates 4 coverage levels/repetition levels/number of times

index	Level/time
		0	0dB/do not repeat
1	5dB/4 times
		2	10dB/30 times
3	15dB/150 times

The PDSCH transmission start subframe that carries the RRC signaling is determined according to a corresponding PDCCH timing relationship, that is, k subframes start after the PDCCH that is repeatedly transmitted ends, for example, k=1. The RRC signaling is sent using the current repetition level and sent only once.

The effective time of the RRC signaling is valid after receiving the feedback information and being correct.

Through the implementation of the present example, in the coverage enhancement scenario, the repeatedly transmitted traffic channel can be adjusted in time and the correctness of the adjustment is ensured when the coverage requirement changes.

Example 3

In the coverage enhancement scenario, the base station adjusts the repetition level/number of times or the coverage level of the uplink control channel through physical layer signaling.

The physical layer signaling adds a new bit field to the existing DCI format to implement indication adjustment; the new bit field includes a repetition level indication field or a repetition number indication field. In physical layer signaling, two repetition levels can be indicated by 2 bits, as shown in Table 7.

Table 7 2bit indicates 3 coverage levels/repetition levels/number of times

index	Level/time
		0	5dB/none
1	10dB/2 times
		2	15dB/10 times

The transmission start subframe of the physical layer signaling is determined according to a predefined value. The physical layer signaling that transmits the adjustment repetition level uses the radio frame subframe 0 as the starting subframe and uses the repetition number N determined by the current repetition level, while the transmission of the physical layer signaling includes k N times in the time window M. Repeat transmission, such as k = 2, M ≥ 2N.

The effective time of the physical layer signaling is valid in the next time window M when the window length M (containing k times of repeated transmissions) is adjusted.

Through the implementation of the present example, in the coverage enhancement scenario, the repeatedly transmitted control channel can be adjusted in time when the coverage requirement changes and the correctness of the adjustment is ensured by multiple transmissions.

Example 4

In the coverage enhancement scenario, the base station adjusts the repetition level/number of times or the coverage level of the downlink control channel through physical layer signaling.

The physical layer signaling adds a new bit field to the existing DCI format to implement indication adjustment; the new bit field includes a repetition level indication field or a repetition number indication field. In physical layer signaling, the high-level and low-order bits of the 4-bit signaling may be used to indicate the coverage level and the number of repetitions, respectively, as shown in Table 8, where the upper 2 bits of the index indicate the coverage level, and the lower 2 bits indicate the number of repetitions.

Table 8 The high and low bits of the 4bit signaling indicate the coverage level and the number of repetitions, respectively.

index	grade	repeat times
			0000	0dB	no
0001	0dB	no
			0010	0dB	no
0011	0dB	no
			0100	5dB	2
0101	5dB	3
			0110	5dB	4
0111	5dB	6
			1000	10dB	10
1001	10dB	20
			1010	10dB	30
1011	10dB	40
			1100	15dB	60
1101	15dB	80
			1110	15dB	100
1111	15dB	120

The transmission start subframe of the physical layer signaling is determined according to a predefined value. The physical layer signaling that sends the adjustment repetition level uses a subframe that satisfies (k+10×SFN) mod C=0 as a starting subframe, and C is a predefined period value. Such as 200 milliseconds (ms). The physical layer signaling is transmitted in cycle C while transmitting at the maximum repetition level.

The effective time of the physical layer signaling is valid for the next cycle when the cycle C is adjusted.

Through the implementation of the present example, in the coverage enhancement scenario, the repeatedly transmitted control channel can be adjusted in time when the coverage requirement changes and can be calibrated through each cycle.

Example 5

In the coverage enhancement scenario, the base station adjusts the repetition level/number of times or the coverage level of the downlink control channel through physical layer signaling.

Wherein, the physical layer signaling is implicitly transmitted together with the DCI to implement the indication adjustment, for example, using the layered modulation technique to transmit the adjustment signaling together with the existing DCI. The physical layer signaling includes a repetition level indication field or a repetition number indication field. In physical layer signaling, two repetition levels can be indicated by 2 bits, as shown in Table 9.

Table 9 2bit indicates 3 coverage levels/repetition levels/number of times

index	Level/time
		0	5dB/4 times
1	10dB/20 times
		2	15dB/80 times

The transmission start subframe of the physical layer signaling is determined according to different repetition levels. The physical layer signaling that transmits the adjustment repetition level uses the same starting subframe as the control channel to which the repetition level is to be adjusted. For example, corresponding to the repetition level to be adjusted, a possible correspondence is: assuming that the repetition number of the downlink control channel is N _i when the repetition level L _i is repeated, the start of the physical layer signaling for adjusting the repetition level is sent. The subframe satisfies (k + 10 × SFN) mod N _i =0. The physical layer signaling is sent using the repetition level to be adjusted and is sent only once.

The effective time of the physical layer signaling is valid after the signaling is received and the feedback is received.

Through the implementation of the present example, in the coverage enhancement scenario, the repeatedly transmitted control channel can be adjusted in time when the coverage requirement changes, and the terminal obtains the adjustment signaling by blindly checking the starting positions of the respective levels.

Example 6

In the coverage enhancement scenario, the base station adjusts the repetition level/number of times or the coverage level of the downlink control channel through physical layer signaling.

The physical layer signaling adds a new bit field to the existing DCI format to implement the indication adjustment; the new bit field includes an aggregation level indication field. In physical layer signaling, 1 bit can be used to indicate two aggregation levels, as shown in Table 10.

Table 10 1bit indicates 2 aggregation levels

index	Aggregation level
		0	AL4
1	AL8

The transmission start subframe of the physical layer signaling is determined according to the current repetition level. The physical layer signaling that transmits the adjusted repetition level uses the same starting subframe as the control channel of the current coverage level. The starting subframe used by the current coverage level control channel is a subframe that satisfies (k+10×SFN) mod N=0, where k is the starting subframe and N is the number of repetitions, then the physical layer that adjusts the repetition level is sent. The starting subframe in which the signaling is located also satisfies (k + 10 × SFN) mod N = 0. The physical layer signaling is sent using the current repeat level and is sent only once.

The effective time of the physical layer signaling is effective immediately after the signaling is completed.

Through the implementation of the present example, in the coverage enhancement scenario, the repeatedly transmitted control channel can be adjusted in time when the coverage requirement changes, and only the aggregation level is adjusted without changing the number of repetitions, which is suitable for the case where the coverage requirement is changed little.

Example 7

In the coverage enhancement scenario, the base station adjusts the repetition level/number of times or the coverage level of the downlink control channel and the downlink traffic channel through physical layer signaling.

The physical layer signaling adds a new bit field to the existing DCI format to implement indication adjustment; the new bit field includes a repetition level indication field or a repetition number indication field. In the physical layer signaling, two repetition levels can be indicated by using 2 bits, as shown in Table 11, wherein the downlink control channel and the downlink traffic channel use the same repetition level but each uses a different repetition number.

Table 11 2bit indicates 4 repetition levels

index	grade	Downlink control channel repetition	Downlink traffic channel repetitions
				0	0dB	Not repeating	Not repeating
1	5dB	4	4
				2	10dB	20	30
3	15dB	80	150

The physical layer signaling is adjusted from the current repetition level 2 to the repetition level 1. The transmission start subframe of the physical layer signaling is determined according to the current repetition level. Transmitting the physical layer signaling of the adjustment repetition level with the current coverage level The control channel uses the same starting subframe. The starting subframe used by the current coverage level control channel is a subframe that satisfies (k+10×SFN) mod N=0, where k is the starting subframe and N is the number of repetitions, then the physical layer that adjusts the repetition level is sent. The starting subframe in which the signaling is located also satisfies (k + 10 × SFN) mod N = 0. The physical layer signaling is sent using the current repeat level and is sent only once.

The effective time of the physical layer signaling is effective immediately after the signaling is completed.

Through the implementation of the present example, in the coverage enhancement scenario, the repeatedly transmitted control channel and traffic channel can be quickly and simultaneously adjusted when the coverage requirement changes.

Industrial applicability

According to the embodiment of the present invention, the base station sends physical layer signaling or high layer signaling indicating the repeated information to the user equipment, where the repeated information is used to adjust the number of transmissions of the channel, and the repeated information includes at least one of the following: repetition level, repetition The number of times and the coverage level solve the problem of waste of resources or insufficient number of repetitions caused by the transmission of the corresponding channel by a fixed number of repeated transmissions, thereby avoiding waste of resources and improving the coverage performance of the user equipment.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in a storage device by a computing device, or they may be fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims (20)

1. A method for transmitting repeated information, including:

   The base station sends physical layer signaling or higher layer signaling indicating the repeated information to the user equipment, where the repeated information is used to adjust the number of transmissions of the channel, and the repeated information includes at least one of the following: a repetition level, a repetition number, and a coverage level. .
2. The method of claim 1 wherein said user equipment comprises: a machine type communication device.
3. The method of claim 1 wherein the channel comprises at least one of:

   Downlink control channel, uplink control channel, downlink traffic channel, and uplink traffic channel.
4. The method according to claim 1, wherein in the case that the base station transmits the repeated information through the physical layer signaling, the physical layer signaling includes one of the following:

   The bit field in the enhanced downlink control information, the bit field in the newly added downlink control information, and the signaling multiplexed and transmitted by the multiplex transmission technology and the downlink control information.
5. The method according to claim 1, wherein, in a case where the base station transmits the repeated information through physical layer signaling, transmitting a starting subframe of the physical layer signaling includes one of the following:

   A predetermined subframe, a subframe corresponding to the current repetition level, and a subframe corresponding to the repetition level to be adjusted.
6. The method of claim 5, wherein

   The predetermined subframe includes: subframe 0 of the radio frame, or a subframe satisfying (k+10×SFN) mod C=0; wherein k=1, 2, 3...; SFN represents a system frame of the radio frame Number; mod is a modulo operation; C is a positive integer, indicating a predetermined period;

   The subframe corresponding to the current repetition level includes: a start subframe that is the same as the control channel of the current repetition level;

   The subframe corresponding to the repetition level to be adjusted includes: the same starting subframe as the control channel of the repetition level to be adjusted.
7. The method according to claim 1, wherein said base station transmits said physical layer signaling or said higher layer signaling by means of one transmission or a plurality of sets of repeated transmissions within a predetermined time window.
8. The method according to claim 1, wherein, in a case where the base station transmits the physical layer signaling or the high layer signaling multiple times, the base station transmits the physical layer signaling or a predetermined transmission period. The high layer signaling.
9. The method according to claim 1, wherein after the base station sends the physical layer signaling or the high layer signaling to the user equipment, the method further includes:

   The base station receives feedback from the user equipment on the physical layer signaling or the high layer signaling.
10. The method according to claim 3, wherein one of said physical layer signaling or said higher layer signaling is used to adjust a number of transmissions of one channel or a group of channels in said channel, wherein said set of channels comprises A combination of at least two of the channels.
11. The method according to claim 1, wherein the repetition information is effective after the base station transmits the physical layer signaling or the high layer signaling, or the repetition information is transmitting the physical layer signaling. Or the high-layer signaling takes effect after a predetermined time window, or the repeated information is valid from the next transmission period in which the physical layer signaling or the high-layer signaling is sent, or the base station receives the user The device takes effect after the feedback information of the physical layer signaling or the high layer signaling.
12. The method according to claim 3, wherein in the case that the channel comprises a downlink control channel, the repeated information is further used to:

    Adjusting an aggregation level of the downlink control channel on all or a part of the subframe set, while maintaining the number of transmissions of the downlink control channel unchanged; or

    Adjusting the number of transmissions of the downlink control channel of a specific aggregation level on all or part of the subframe set, wherein the specific aggregation level includes one or more aggregation levels.
13. The method according to any one of claims 1 to 12, wherein the base station transmits the repeated information to the user equipment only if the current repetition level is adjusted to a smaller repetition level, wherein The number of transmissions corresponding to the smaller repetition level is less than the number of transmissions corresponding to the current repetition level.
14. The method of any one of claims 1 to 12, wherein adjusting the number of transmissions of the channel comprises adjusting the number of transmissions of the channel on a subset of subframes used to transmit the channel.
15. The method of claim 14, wherein after adjusting the number of transmissions of the channel on the partial subframe set, adjusting the number of transmissions of the channel further comprises:

    Determining, by at least one of the following, the channel transmission stability on the partial subframe set: receiving data through the channel on the partial subframe set, and receiving a representation of a peer response is stable The predetermined confirmation information reaches a predetermined interval after adjusting the number of transmissions of the channel on the partial subframe set;

    Adjusting the number of transmissions of the channel on all or part of other subframe sets, wherein the other subframes include: a subframe set in which all of the subframe sets of the channel are not adjusted.
16. The method according to any one of claims 1 to 12, wherein, in the case where the repetition information is a repetition level, the physical layer signaling or the high layer signaling is sent to the user at the base station Before the device, the method further includes:

    Determining, by the base station, a repetition level used by the physical layer signaling or the high layer signaling, where the base station sends the physical layer signaling or the high layer signaling to the user by using a determined repetition level device.
17. The method according to claim 16, wherein the base station determines that the repetition level used for transmitting the physical layer signaling or the high layer signaling comprises at least one of the following:

    Determining, by the base station, that the current repetition level is a repetition level used by the physical layer signaling or the high layer signaling;

    Determining, by the base station, a maximum repetition level as a repetition level used by the physical layer signaling or the high layer signaling;

    In the case of adjusting the current repetition level to a smaller repetition level, the base station determines that the current repetition level is a repetition level used for transmitting the physical layer signaling or the high layer signaling;

    In the case that the current repetition level is adjusted to a larger repetition level, the base station determines that the maximum repetition level is a repetition level used for transmitting the physical layer signaling or the high layer signaling;

    Wherein the maximum repetition level is determined according to a configured maximum coverage level; the transmission of the smaller repetition level, the current repetition level, the larger repetition level, and the maximum repetition level respectively The number of times increases in turn.
18. A method for receiving repeated information, comprising:

    The user equipment receives the physical layer signaling or the high layer signaling indicating the repeated information, where the repeated information is used to adjust the number of transmissions of the channel, and the repeated information includes at least one of the following: a repetition level, a repetition number, and an coverage level.
19. A base station comprising:

    The transceiver station is configured to send physical layer signaling or high layer signaling indicating the repeated information to the user equipment, where the repeated information is used to adjust the number of transmissions of the channel, and the repeated information includes at least one of the following: a repetition level, Number of repetitions, coverage level.
20. A user equipment comprising:

    The receiver is configured to receive physical layer signaling or higher layer signaling indicating the repeated information, where the repeated information is used to adjust the number of transmissions of the channel, and the repeated information includes at least one of the following: a repetition level, a repetition number, and an overlay. grade.

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