CN111093174A

CN111093174A - Information indication method, information receiving method, device and storage medium

Info

Publication number: CN111093174A
Application number: CN201910762621.6A
Authority: CN
Inventors: 边峦剑; 戴博; 刘锟; 方惠英; 胡有军; 杨维维
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-05-01
Also published as: WO2021031937A1

Abstract

The application provides an information indication method, an information receiving device and a storage medium. The method comprises the following steps: a first communication node sends a downlink control information format to a second communication node; the downlink control information format comprises an ETWS (earthquake and tsunami warning system) indication domain, a CMAS (commercial Mobile alert service) indication domain and a first bit domain; the ETWS indicating domain is used for determining an ETWS indication, and the CMAS indicating domain is used for determining a CMAS indication.

Description

Information indication method, information receiving method, device and storage medium

Technical Field

The present application relates to wireless communication networks, and in particular, to an information indication method, an information receiving method, an apparatus, and a storage medium.

Background

In an existing eMTC (Enhanced Machine Type Communication) System, a terminal in an idle state acquires Earthquake and Tsunami Warning System (ETWS) information and Commercial Mobile Alert Service (CMAS) information by detecting a downlink control channel Type 1 common search space. In an eMTC connection state, the terminal does not detect a downlink control channel type 1 common search space, and therefore cannot acquire earthquake and tsunami warning system ETWS information and commercial mobile alert service CMAS information. However, it is necessary to notify the connected terminal of the two pieces of information in an application scenario and an application requirement, and therefore, in the eMTC link state, the ETWS and CMAS indications are performed by using the downlink control channel type 0 common search space. However, the problems of which downlink control information format is used to indicate ETWS and CMAS, the content details of the indication, and the like have not been solved.

Disclosure of Invention

The application provides an information indication method, an information receiving method, a device, a system and a storage medium.

The embodiment of the application provides an information indication method, which comprises the following steps:

a first communication node sends a downlink control information format to a second communication node;

the downlink control information format comprises an ETWS (earthquake and tsunami warning system) indication domain, a CMAS (commercial Mobile alert service) indication domain and a first bit domain; the ETWS indicating domain is used for determining an ETWS indication, and the CMAS indicating domain is used for determining a CMAS indication.

An embodiment of the present application provides an information receiving method, including:

a second communication node receives a downlink control information format sent by a first communication node;

the downlink control information format comprises an ETWS indicating domain, a CMAS indicating domain and a first bit domain; the ETWS indicating domain is used for determining an ETWS indication, and the CMAS indicating domain is used for determining a CMAS indication.

An embodiment of the present application provides an information indicating device, including:

a sending module: the first communication node is used for sending a downlink control information format to the second communication node;

An embodiment of the present application provides an information receiving apparatus, including:

a receiving module: the downlink control information format is used for the second communication node to receive the downlink control information format sent by the first communication node;

The embodiment of the application provides a storage medium, wherein a computer program is stored in the storage medium, and when being executed by a processor, the computer program realizes any one method in the embodiment of the application.

With regard to the above embodiments and other aspects of the present application and implementations thereof, further description is provided in the accompanying drawings description, detailed description and claims.

Drawings

Fig. 1 is a schematic flow chart of an information indication method according to an embodiment of the present application.

Fig. 2 is a schematic flow chart of an information receiving method according to an embodiment of the present application.

Fig. 3 is a schematic flow chart of an information indication method provided by an example of the present application.

Fig. 4 is a schematic flow chart of an information receiving method according to an example of the present application.

Fig. 5 is a schematic flow chart of an information receiving method according to an example of the present application.

Fig. 6 is a schematic structural diagram of an information indicating apparatus according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of an information receiving apparatus according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present application.

Fig. 9 is a schematic structural diagram of a base station according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of a communication system according to an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The present application first provides an information indication method, as shown in fig. 1, including:

step S11: the first communication node transmits downlink control Information format (DCI format) to the second communication node.

The downlink control information format comprises an ETWS (earthquake and tsunami warning system) indication domain, a CMAS (commercial Mobile alert service) indication domain and a first bit domain; the ETWS indicating domain is used for determining an ETWS indication (ETWS indication), and the CMAS indicating domain is used for determining a CMAS indication (CMAS indication).

In this embodiment, the first communication node may be a base station, and the second communication node may be a terminal. The first communication node may also be other communication devices, and the second communication node may be other devices having a communication reception function. Further, the second communication node may be a terminal operating under the eMTC system. Further, the first communication node and the second communication node communicate in an eMTC system connected state.

In the embodiment of the present application, the downlink control information format includes information content such as signaling, and the existing format may be used, and other custom formats may also be used. In the embodiment of the present application, the ETWS indication field corresponds to one configuration parameter, and the CMAS indication field corresponds to one configuration parameter. The values of the ETWS indication field and the CMAS indication field are the values of their corresponding configuration parameters. The ETWS indication may include an indication of the ETWS primary notification and/or the secondary notification. The CMAS indication may include an indication of CMAS notification. By adopting the method provided by the embodiment of the application, the ETWS information notification and/or the CMAS information notification can be carried out in the eMTC system link state. In one embodiment, the first bit field includes a first number of bits having the same value.

For example, the first bit field contains 10 bits, each of which takes the value 0 or 1. Alternatively, the first bit field comprises 5 bits, each bit taking the value 0 or 1.

In the embodiment of the application, all bits or part of bits of the first bit field can be used as an extra check for decoding, so that the false alarm rate is reduced.

In one embodiment, the first bit field includes a second number of reserved bits, and a third number of bits having the same value; wherein the second value is not less than 1 and the third value is greater than 1.

In this embodiment, the values of the bits with the same third value may all be 0 or all be 1. The bits with the same value of the third value can be used as extra check of decoding, and the false alarm rate is reduced. The second number of reserved bits may be used for indication of other information.

In one embodiment, for Coverage Enhancement Mode a (CEMode a), the total number of bits of the ETWS indication field, the CMAS indication field, and the first bit field is equal to the number of bits of downlink control information format6-0A (DCI format 6-0A). The number of bits contained in the DCI format6-0A is obtained according to the protocol search. Since the total number of bits of the downlink control information format in this embodiment is equal to the number of bits of the downlink control information format6-0A in CE mode a, the number of times for the second communication node to blindly detect the downlink control information is not increased.

In one embodiment, for Coverage Enhancement Mode B (CEMode B), the total number of bits of the ETWS indication field, the CMAS indication field, and the first bit field is equal to the number of bits of downlink control information format 6-0B (DCI format 6-0B). The number of bits contained in the DCI format 6-0B is obtained according to the protocol search. Since the total number of bits of the downlink control information format in this embodiment is equal to the number of bits of the downlink control information format 6-0B in CE mode B, the number of times for the second communication node to blindly detect the downlink control information is not increased.

In one embodiment, the second reserved bits include a Master Information Block (MIB) indication field, and the Master information block indication field is used for indicating a Master information block content change. And if the master information block indication field indicates that the system information in the master information block is changed, the second communication node needs to detect the MIB again.

In an embodiment, the second reserved bits include a system information Block type 1(SIB1) scheduling information field, where the system information Block type 1 scheduling information field is used to indicate the number of repetitions of the system information Block type 1 and a transport Block size.

In one embodiment, the method further comprises:

determining a Radio Network Temporary Identifier (RNTI) for the downlink control information format comprising the ETWS indication domain, the CMAS indication domain and the first bit domain; and scrambling the transmission bits of the downlink control information format by using the wireless network temporary identifier. In one embodiment, in the narrowband internet of things, a control channel search space for transmitting the ETWS indication and the CMAS indication has the same carrier configuration, starting subframe configuration, and maximum repetition number configuration as a search space dedicated to a control channel terminal.

As shown in fig. 2, an embodiment of the present application further provides an information receiving method, including:

step S21: and the second communication node receives the downlink control information format sent by the first communication node.

In one embodiment, the first bit field includes a first number of bits having the same value. All or part of the bits of the first bit field can be used as an extra check for decoding, so that the false alarm rate is reduced.

In one embodiment, the first bit field includes a second number of reserved bits, and a third number of bits having the same value; wherein the second value is not less than 1 and the third value is greater than 1. The values of the bits with the same value of the third value may all be 0 or all be 1. The second number of reserved bits may be used for indication of other information. The bits with the same value of the third value can be used as extra check of decoding, and the false alarm rate is reduced.

In the embodiment of the present application, the downlink control information format includes information content such as signaling, and the existing format may be used, and other custom formats may also be used.

By adopting the method provided by the embodiment of the application, the ETWS information notification and/or the CMAS information notification can be carried out in the eMTC system connection state, and the frequency of blind detection of the downlink control information of the second communication node is not increased.

In one embodiment, the second communication node receives an ETWS indication, the method further comprising:

under the condition that the value of the ETWS indication domain is a fourth value, the second communication node detects a System Information Block (SIB) type corresponding to an ETWS main notification;

and under the condition that the value of the ETWS indication domain is a fifth value, the second communication node detects the system information block types corresponding to the ETWS main notification and the ETWS auxiliary notification.

under the condition that the value of the ETWS indication domain is a fourth value, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

under the condition that the value of the ETWS indication domain is a fifth value, the second communication node detects a system information block type corresponding to an ETWS main notification;

and under the condition that the value of the ETWS indication domain is a sixth value, the second communication node detects the system information block types corresponding to the ETWS main notification and the ETWS auxiliary notification.

in case the value of the ETWS indication field is a fourth value, the second communication node detects a master information block, MIB; according to the information in the MIB, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

under the condition that the value of the ETWS indicating field is a fifth value, the second communication node detects a system information block type 1 and acquires a scheduling information list in the system information block type 1; if the scheduling information list indicates that the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification.

In one embodiment, the second communication node receives an ETWS indication, the first bit field comprising a master information block, MIB, indication field; the method further comprises the following steps:

the second communication node detecting a master information block, MIB, if the value of the ETWS indication field is a seventh value and the value of the master information block, MIB, indication field is a seventh value; according to the information in the MIB, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification.

When the value of the ETWS indication field is a seventh value and the value of the master information block, MIB, indication field is an eighth value, the second communication node does not detect MIB, directly detects SIB1, and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification. The ETWS indication field and the MIB indication field may be 1-bit information, respectively, and then a seventh value is equal to 1 and an eighth value is equal to 0.

In one embodiment, the second communications node receives a CMAS indication, the method further comprising:

and under the condition that the value of the CMAS indication domain is a ninth value, the second communication node detects the type of the system information block corresponding to the CMAS notification.

under the condition that the value of the CMAS indication domain is a ninth value, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification;

under the condition that the value of the CMAS indication domain is a tenth value, the second communication node detects the type of a system information block corresponding to the CMAS notification;

under the condition that the value of the CMAS indication domain is a ninth value, the second communication node detects a master information block MIB; according to the information in the MIB, the second communication node detects a system information block type 1 and obtains a scheduling information list in the system information block type 1; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification;

under the condition that the value of the CMAS indication domain is a tenth value, the second communication node detects a system information block type 1 and acquires a scheduling information list in the system information block type 1; and if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification.

In one embodiment, a second communication node receives a CMAS indication, the first bit field comprising a master information block, MIB, indication field; the method further comprises the following steps:

the second communication node detects a master information block MIB when the value of the CMAS indication field is an eleventh value and the value of the master information block MIB indication field is an eleventh value; according to the information in the MIB, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; and if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification.

Under the condition that the value of the CMAS indication field is an eleventh value and the value of the master information block MIB indication field is a tenth value, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; and if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification. The CMAS indication field and the MIB indication field may be 1-bit information respectively, and then the eleventh value is equal to 1 and the twelfth value is equal to 0.

The following are specific examples of the present application.

Specific example 1

The system information indication method provided by the present example includes:

and the first communication node sends the downlink control information format to the second communication node. The downlink control information format comprises an ETWS (earthquake and tsunami warning system) indication domain, a CMAS (commercial Mobile alert service) indication domain and a first bit domain; the ETWS indicating domain is used for determining an ETWS indication, and the CMAS indicating domain is used for determining a CMAS indication.

In this example, the ETWS indication field corresponds to a higher layer configuration parameter P1, and the higher layer configuration parameter P1 includes k1 bits. The CMAS indication domain corresponds to a high-level configuration parameter P2, the high-level configuration parameter P2 comprises k2 bits, and both k1 and k2 are greater than or equal to 1. The value of the ETWS indication field is the value of the higher-layer configuration parameter P1, and the value of the CMAS indication field is the value of the higher-layer configuration parameter P2. The ETWS indication domain is used for indicating an ETWS primary notification and/or a secondary notification; the CMAS indication domain is used for indicating CMAS notification.

In this example, the ETWS indication field may also indicate a configuration parameter of a system information block type corresponding to the ETWS main notification and/or the auxiliary notification, where the configuration parameter of the system information block type corresponding to the ETWS main notification and/or the auxiliary notification indicates a scheduling information change of the system information block type corresponding to the ETWS, that is, whether the system information block type corresponding to the ETWS main notification and/or the auxiliary notification is scheduled. Similarly, the CMAS indication field may also refer to a configuration parameter of a system information block type corresponding to the CMAS notification, where the configuration parameter of the system information block type corresponding to the CMAS notification indicates a scheduling information change of the system information block type corresponding to the CMAS, that is, whether the system information block type corresponding to the CMAS notification is scheduled or not.

In this example, in the eMTC, the system information block type corresponding to the ETWS main notification is system information block type 10, that is, SIB 10; the system information block type corresponding to the ETWS auxiliary notification is system information block type 11, namely SIB 11; the CMAS informs that the corresponding system information block type is system information block type 12, namely SIB 12.

In this example, the first bit field includes bits with first values both of which are 0 or both of which are 1, and the first value is greater than 1. During decoding, the terminal may use all bits or a part of bits of the first bit field as additional decoding check, for example, n bits with a value of 0 in the first bit field are used for the additional decoding check, after the terminal decodes the downlink control information, if 1 occurs in the bits, the terminal may determine that the downlink control information is decoded incorrectly, and abandon the decoding result, thereby avoiding ETWS/CMAS false alarm and reducing the false alarm rate.

In this example, the first bit field includes T1 reserved bits, and T2 bits with the same value; wherein T1 is greater than or equal to 1 and T2 is greater than 1. The T1 reserved bits may be used for other information indications. The T2 bits with the same value can be used for additional decoding check.

In a specific example, the T1 reserved bits include a Master Information Block (MIB) indication field. The master information block indication field is used for indicating the content change of the master information block. If the value of the indication field of the master information block is 1, the change of the system information in the master information block is indicated, and the second communication node needs to detect the MIB again.

In yet another specific example, the T1 reserved bits include a system information block type 1(SIB1) scheduling information field. Wherein the system information block type 1 scheduling information field is used for indicating the repetition number and the transport block size of the system information block type 1.

In this example, for Coverage Enhancement Mode a (CE Mode a), the total number of bits of the ETWS indication field, the CMAS indication field, and the first bit field is equal to the number of bits of downlink control information format6-0A (DCIformat 6-0A).

In this example, for Coverage Enhancement Mode B (CE Mode B), the total number of bits of the ETWS indication field, the CMAS indication field, and the first bit field is equal to the number of bits of downlink control information format 6-0B (DCIformat 6-0B).

The number of bits contained in the downlink control information format of CE mode A is different from that of CE mode B, and based on the method, the blind detection times of the control channel cannot be increased when the terminal is configured in CE mode A or CE mode B.

In this example, the method further includes determining a Radio Network Temporary Identifier (RNTI) for the downlink control information format including the ETWS indication field, the CMAS indication field, and the first bit field; and scrambling the transmission bits of the downlink control information format by using the RNTI. At the receiving end, if the downlink control information format is descrambled by the RNTI for ETWS indication and CMAS indication, it indicates that the downlink control information format transmits ETWS indication and CMAS indication.

In this example, in a Narrow Band Internet of Things (NB-IoT), the search space for transmitting the ETWS indication and the CMAS indication has the same carrier configuration, starting subframe configuration, and maximum repetition number configuration as the search space dedicated to the control channel terminal.

Specific example 2

The system information receiving method provided by this example includes:

In this example, the first bit field includes bits with first values both of which are 0 or both of which are 1, and the first value is greater than 1. During decoding, the terminal may use all bits or a part of bits of the first bit field as additional decoding check, for example, n bits with a value of 0 in the first bit field are used for the additional decoding check, after the terminal decodes the downlink control information, if 1 occurs in the n bits, the terminal may determine that the downlink control information is decoded incorrectly, and abandon the decoding result, thereby avoiding ETWS/CMAS false alarm and reducing the false alarm rate.

In this example, the first bit field includes a second number of reserved bits, and a third number of bits having the same value; wherein the second value is greater than or equal to 1 and the third value is greater than 1. The second number of reserved bits may be used for other information indications. The bits with the same value of the third value can be used for additional decoding check.

For the ETWS indication, a manner of responding to the downlink control information format by the second communication node may adopt one of the following schemes:

the first scheme is as follows: optionally, in this example, when the value of the ETWS indication field is a1, indicating that the first communication node sends an ETWS master notification, the second communication node detects a System Information Block (SIB) type corresponding to the ETWS master notification;

and when the value of the ETWS indication field is a2, indicating that the first communication node sends an ETWS main notification and an ETWS auxiliary notification, and the second communication node detecting the system information block types corresponding to the ETWS main notification and the ETWS auxiliary notification.

And under the condition that the value of the ETWS indication domain is a3, indicating that the first communication node sends the ETWS auxiliary notification, the second communication node detects the system information block type corresponding to the ETWS auxiliary main notification.

In case that the value of the ETWS indication field is a4, indicating that the first communication node does not send the ETWS primary notification and the ETWS secondary notification, the second communication node does not need to detect the ETWS primary notification and the ETWS secondary notification.

Scheme II: optionally, in this example, when the value of the ETWS indication field is a1, indicating that the first communication node sends an ETWS notification and the second communication node is required to detect a system information block type 1(SIB1), the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

when the value of the ETWS indication field is a2, it indicates that the first communication node sends the ETWS primary notification, and does not need the second communication node to confirm the system information scheduling change through SIB1, then the second communication node detects the system information block type corresponding to the ETWS primary notification;

when the value of the ETWS indication field is a3, it indicates that the first communication node sends the ETWS primary notification and the ETWS secondary notification, and does not need the second communication node to confirm the system information scheduling change through SIB1, and then the second communication node detects the system information block types corresponding to the ETWS primary notification and the ETWS secondary notification.

When the value of the ETWS indication field is a4, it indicates that the first communication node sends the ETWS auxiliary notification, and does not need the second communication node to confirm the system information scheduling change through SIB1, and then the second communication node detects the system information block type corresponding to the ETWS auxiliary notification.

In case that the value of the ETWS indication field is a5, indicating that the first communication node does not send the ETWS primary notification and the ETWS secondary notification, the second communication node does not need to detect the ETWS primary notification and the ETWS secondary notification.

The third scheme is as follows: optionally, in this example, when the value of the ETWS indication field is a1, it indicates that the first communication node sends an ETWS notification, and it needs the second communication node to detect the MIB to obtain SIB1 configuration information, and then detect SIB1 to confirm a system information scheduling change, then the second communication node detects a master information block MIB; according to the information in the MIB, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

when the value of the ETWS indication field is a2, indicating that the first communication node sends an ETWS auxiliary notification, and does not need the second communication node to detect the MIB but needs to detect SIB1 to confirm the system information scheduling change, the second communication node detects SIB1 and acquires the scheduling information list in SIB 1; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

when the value of the ETWS indication field is a3, it indicates that the first communication node sends an ETWS master notification, and does not need the second communication node to detect the MIB and SIB1, then the second communication node detects a system information block type corresponding to the ETWS master notification;

and in case that the value of the ETWS indication field is a4, indicating that the first communication node sends the ETWS primary notification and the ETWS secondary notification, and the second communication node does not need to detect the MIB and the SIB1, then the second communication node detects the system information block types corresponding to the ETWS primary notification and the ETWS secondary notification.

And in case that the value of the ETWS indication field is a5, indicating that the first communication node sends the ETWS auxiliary notification and the second communication node does not need to detect the MIB and the SIB1, the second communication node detects a system information block type corresponding to the ETWS auxiliary notification.

In case that the value of the ETWS indication field is a6, indicating that the first communication node does not send the ETWS primary notification and the ETWS secondary notification, the second communication node does not need to detect the ETWS primary notification and the ETWS secondary notification.

And the scheme is as follows: optionally, in this example, when the value of the ETWS indication field is a1, it indicates that the first communication node sends an ETWS notification, and it needs the second communication node to detect the MIB to obtain SIB1 configuration information, and then detect SIB1 to confirm a system information scheduling change, then the second communication node detects a master information block MIB; according to the information in the MIB, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

when the value of the ETWS indication field is a2, indicating that the first communication node sends an ETWS notification, and does not need the second communication node to detect the MIB but needs to detect SIB1 to confirm the system information scheduling change, the second communication node detects a system information block type 1, and acquires a scheduling information list in the system information block type 1; if the scheduling information list indicates that the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification.

And a fifth scheme: optionally, in this example, the first bit field includes a master information block, MIB, indication field.

The second communication node detecting a master information block MIB when the ETWS indication field has a value of 1 and the master information block MIB indication field has a value of 1; according to the information in the MIB, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification.

Under the condition that the value of the ETWS indication field is 1 and the value of the master information block MIB indication field is 0, the second communication node does not detect the MIB, directly detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification.

Wherein, a1, a2, a3, a4, a5 and a6 are different values of the ETWS indicating field.

For the CMAS indication, a response manner of the second communication node to a downlink control information format may adopt one of the following schemes:

the first scheme is as follows: optionally, in this example, when the value of the CMAS indication field is b1, indicating that the first communication node sends a CMAS notification, the second communication node detects a system information block type corresponding to the CMAS notification;

scheme II: optionally, in this example, when the value of the CMAS indication field is b1, indicating that the first communication node sends the CMAS notification and the second communication node is required to detect the system information block type 1(SIB1), the second communication node detects SIB1 and obtains the scheduling information list in SIB 1; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification;

under the condition that the value of the CMAS indication domain is b2, the first communication node is indicated to send the CMAS notification, and the second communication node does not need to confirm the system information scheduling change through SIB1, and then the second communication node detects the system information block type corresponding to the CMAS notification;

in case the value of the CMAS indication field is b3, indicating that the first communication node does not send a CMAS notification, the second communication node does not need to detect the CMAS notification.

The third scheme is as follows: optionally, in this example, when the value of the CMAS indication field is b1, it indicates that the first communication node sends a CMAS notification, and it needs the second communication node to detect the MIB to obtain SIB1 configuration information, and then detect SIB1 to confirm system information scheduling change, then the second communication node detects a master information block MIB; according to the information in the MIB, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification;

when the value of the CMAS indication field is b2, indicating that the first communication node sends a CMAS notification, and the second communication node does not need to detect the MIB but needs to detect SIB1 to confirm the scheduling change of the system information, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification;

under the condition that the value of the CMAS indication domain is b3, the first communication node is indicated to send the CMAS notification, and the second communication node is not required to detect MIB and SIB1, so that the second communication node detects the type of a system information block corresponding to the CMAS notification;

in case the value of the CMAS indication field is b4, indicating that the first communication node does not send a CMAS notification, the second communication node does not need to detect the CMAS notification.

And the scheme is as follows: optionally, in this example, when the value of the CMAS indication field is b1, it indicates that the first communication node sends a CMAS notification, and it needs the second communication node to detect the MIB to obtain SIB1 configuration information, and then detect SIB1 to confirm system information scheduling change, then the second communication node detects a master information block MIB; according to the information in the MIB, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification;

when the value of the CMAS indication field is b2, indicating that a first communication node sends a CMAS notification, and not requiring a second communication node to detect MIB but requiring SIB1 to confirm system information scheduling change, the second communication node detects a system information block type 1 and acquires a scheduling information list in the system information block type 1; and if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification.

Under the condition that the value of the CMAS indication field is 1 and the value of the master information block MIB indication field is 1, the second communication node detects a master information block MIB; according to the information in the MIB, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; and if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification.

Under the condition that the value of the CMAS indication field is 1 and the value of the master information block MIB indication field is 0, the second communication node detects SIB1 and acquires a scheduling information list in SIB 1; and if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification.

Wherein, b1, b2, b3 and b4 are different values of the ETWS indicating field.

Specific example III

The system information indication method provided by this example, as shown in fig. 3, includes:

step S51: determining a DCI format, wherein the DCI format comprises ETWS indication, CMASindication and bits with a first value of 0.

In this example, the ETWS indication contains k1 bits of information, and the CMAS indication contains k2 bits of information. Under CE mode A, for the DCI format, except ETWS indication and CMAS indication, supplementing bits with value of 0 until the number of bits of the DCI format is the same as that of DCI format 6-0A; under CE mode B, for the DCI format, except ETWS indication and CMAS indication, adding bits with value of 0 additionally until the number of bits of the DCI format is the same as that of DCI format 6-0B. All or part of the supplementary 0-value bits can be used as an extra decoding check to reduce the false alarm rate of the ETWS indication and the CMAS indication.

In this example, an RNTI dedicated to ETWS indication and CMAS indication is determined, and the RNTI is used to scramble the DCI format.

In a specific example, the ETWS indication is 2-bit information, the CMAS indication is 1-bit information, the first communication node may be a base station, and the second communication node may be a user terminal, and the following indication relationship is adopted:

when the value of the ETWS indication is '00' or 0, it indicates that the base station does not send the ETWS main notification and the ETWS auxiliary notification, and the user terminal does not need to detect the ETWS main notification and the ETWS auxiliary notification.

When the value of the ETWS indication is '01' or 1, it indicates that the base station sends an ETWS main notification and the user terminal needs to detect the SIB 10.

When the value of the ETWS indication is '10' or 2, it indicates that the base station sends an ETWS auxiliary notification and the user terminal needs to detect the SIB 11.

When the value of the ETWS indication is '11' or 3, it indicates that the base station sends the ETWS main notification and the ETWS auxiliary notification, and the user terminal needs to detect SIB10 and SIB 11.

And when the value of the CMAS indication is 0, the base station does not send the CMAS notification, and the user terminal does not need to detect the CMAS notification.

When the value of the CMAS indication is 1, it indicates that the base station sends a CMAS notification, and the user equipment needs to detect SIB 12.

In another specific example, the ETWS indication is 3-bit information, the CMAS indication is 2-bit information, the first communication node may be a base station, and the second communication node may be a terminal, and the following indication relationship is adopted:

when the value of the ETWS indication is '000' or 0, it indicates that the base station does not send the ETWS main notification and the ETWS auxiliary notification, and the user terminal does not need to detect the ETWS main notification and the ETWS auxiliary notification.

When the value of the ETWS indication is '001' or 1, it indicates that the base station sends an ETWS notification, and needs to detect SIB1 to confirm system information scheduling change, and the user terminal needs to detect SIB1 to obtain a scheduling information list, schedulingInfoList, in SIB 1; if the scheduling information list schedulinglnfolist indicates that SIB10 and/or SIB11 are present, the user terminal needs to detect SIB10 and/or SIB 11.

When the value of the ETWS indication is '010' or 2, it indicates that the base station transmits an ETWS master notification, and does not need to confirm system information scheduling change through SIB1, and the user terminal needs to detect SIB 10.

When the value of the ETWS indication is '011' or 3, it indicates that the base station sends the ETWS auxiliary notification, and does not need to confirm the system information scheduling change through SIB1, and the user terminal needs to detect SIB 11.

When the value of the ETWS indication is '100' or 4, it indicates that the base station sends the ETWS main notification and the ETWS auxiliary notification, and does not need to confirm the system information scheduling change through SIB1, and the user terminal needs to detect SIB10 and SIB 11.

And when the value of the CMAS indication is '00', the base station does not send the CMAS notification, and the user terminal does not need to detect the CMAS notification.

When the value of the CMAS indication is '01', the base station is indicated to send a CMAS notification, SIB1 needs to be detected to confirm system information scheduling change, SIB1 needs to be detected by the user terminal, and a scheduling information list schedulingInfoList in SIB1 is obtained; if the scheduling information list schedulinglnfolist indicates that SIB12 is present, the user terminal needs to detect SIB 12.

When the value of the CMAS indication is '10', it indicates that the base station transmits the CMAS notification and does not need to confirm the system information scheduling change through SIB1, and the user terminal needs to detect SIB 12.

In another specific example, the ETWS indication is 1-bit information, and the CMAS indication is 1-bit information, and the following indication relationship is adopted:

when the value of the ETWS indication is 1, the base station is indicated to send an ETWS notification, the user terminal needs to detect SIB1 and acquire a scheduling information list schedulingInfoList in SIB 1; if the scheduling information list schedulinglnfolist indicates that SIB10 and/or SIB11 are present, the user terminal needs to detect SIB10 and/or SIB 11.

When the value of the CMAS indication is 1, the base station is indicated to send a CMAS notification, the user terminal needs to detect SIB1 and obtain a scheduling information list schedulingInfoList in SIB 1; if the scheduling information list schedulinglnfolist indicates that SIB12 is present, the user terminal needs to detect SIB 12.

In one example, still referring to fig. 3, the method further comprises:

step S52: and the base station sends the DCI format to the user terminal.

Specific example No. four

As shown in fig. 4, the specific method for receiving system information includes:

step S61, the ue receives the DCI format sent by the base station. The DCI format comprises ETWSindication, CMAS indication and n bits with the value of 0.

In this example, the user terminal uses the RNTI dedicated to the ETWS indication and the CMAS indication to descramble the DCI format correctly, and then the user terminal determines that the DCI format is the DCI format for transmitting the ETWS indication and the CMAS indication. Then, the ue checks whether the extra decoding check bits in the DCI format are all 0, and if so, the ue determines that the decoding of the DCI format is correct.

And step S62, the user terminal carries out corresponding operation according to the ETWS indication and/or the CMAS indication.

In a specific example, the user terminal obtains the ETWS indication and the CMAS indication, and performs the following corresponding operations:

when the value of the ETWS indication is '00' or 0, the user terminal does not detect the ETWS main notification and the ETWS auxiliary notification.

When the value of ETWS indication is '01' or 1, the user terminal detects SIB 10.

When the value of ETWS indication is '10' or 2, the user terminal detects SIB1 l.

When the ETWS indication has a value of '11' or 3, the user terminal needs to detect SIB10 and SIB 11.

And when the value of the CMAS indication is 0, the user terminal does not detect the CMAS notification.

When the value of the CMAS indication is 1, the user terminal detects SIB 12.

In another specific example, the ue acquires the ETWS indication and the CMAS indication, and performs the following operations:

when the value of the ETWS indication is '000' or 0, the user terminal does not detect the ETWS main notification and the ETWS auxiliary notification.

When the value of the ETWS indication is '001' or 1, the user terminal detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that SIB10 and/or SIB11 is present, the user terminal detects SIB10 and/or SIB 11.

When the value of the ETWS indication is '010' or 2, the user terminal detects SIB 10.

When the value of the ETWS indication is '011' or 3, the user terminal detects SIB 11.

When the value of ETWS indication is '100' or 4, the user terminal detects SIB10 and SIB 11.

And when the value of the CMAS indication is '00', the user terminal does not detect the CMAS notification.

When the value of the CMAS indication is '01', the user terminal detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that SIB12 is present, the user terminal detects SIB 12.

When the value of the CMAS indication is '10', the user terminal detects SIB 12.

when the value of the ETWS indication is 1, the user terminal detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that SIB10 and/or SIB11 is present, the user terminal detects SIB10 and/or SIB 11.

When the value of the CMAS indication is 1, the user terminal detects SIB1 and acquires a scheduling information list in SIB 1; if the scheduling information list indicates that SIB12 is present, the user terminal detects SIB 12.

Concrete example five

determining one DCI format, wherein the DCI format comprises an ETWS indication field, a CMAS indication field, m1 reserved bits and m2 0-value bits.

In this example, the number of bits of the DCI format is a total number of bits included in ETWS indication, CMAS indication, m1 reserved bits, and m2 0-valued bits, ml is greater than or equal to 1, and m2 is greater than 1. Under CE mode A, the bit number of the DCI format is equal to the bit number of DCIformat 6-0A; under CE mode B, the bit number of the DCI format is equal to the bit number of the DCI format 6-0A.

In this example, the ETWS indication contains 1 bit of information and the CMAS indication contains 1 bit of information.

When the value of ETWS indication is 1, it indicates that the ue needs to detect SIB1, and acquires the scheduling information list, and if the scheduling information list indicates that SIB10 and/or SIB11 are present, the ue needs to detect SIB10 and/or SIB 11.

When the value of CMAS indication is 1, indicating that the user terminal needs to detect SIB1, acquiring a scheduling information list, and if the scheduling information list indicates that SIB12 exists, the user terminal needs to detect SIB 12.

In this example, the m1 reserved bits may be used to indicate other information.

In a specific example, the m1 reserved bits include a 1-bit MIB indication field. Thus, the DCI format includes an ETWS indication field, a CMAS indication field, a MIB indication field, and m1-1 reserved bits and m2 0-value bits. The MIB indication field is used for indicating the change of the content of the master information block. If the value of the indication field of the master information block is 1, the change of the system information in the master information block is indicated, and the second communication node needs to detect the MIB again.

In yet another specific example, the m1 reserved bits include a 5-bit SIB1 scheduling information field. Thus, the DCIformat includes an ETWS indication field, a CMAS indication field, a SIB1 scheduling information field, and m1-5 reserved bits and m2 0-valued bits. The 5-bit SIB1 scheduling information field is used to indicate the number of repetitions of SIB1 and the transport block size.

And the base station sends the DCI format to the user terminal.

Specific example six

The system information indication method provided by this example, as shown in fig. 5, includes:

step S71, for the eMTC connection state, determining DCI format in the downlink control channel type 0 common search space, where the DCI format includes a system message change indication signaling and m2 bits with a value of 0.

The method in this example is applicable to an eMTC connection state, and transmits a system message change indication signaling using a downlink control channel type 0 common search space. Under CE mode A, the bit number of the DCI format is the same as that of DCI format 6-0A; under CE mode B, the number of bits of the DCI format is the same as that of DCI format 6-0B

In a specific example, the System message change indication signaling includes an ETWS indication field, a CMAS indication field, a System Information Modification (System Information Modification) indication field, and a second System Information Modification indication field.

The ETWS indication field, the CMAS indication field, the system information modification indication field, and the second system information modification indication field are respectively 1-bit information, that is, 4-bit indication information in total. Under CE mode A, 4+ m2 equals the number of bits DCI format6-0A contains; under CE mode B, 4+ m2 is equal to the number of bits DCI format 6-0B contains.

In another specific example, the system message change indication signaling includes an ETWS indication domain, a CMAS indication domain, a system information modification indication domain, a second system information modification indication domain, and a MIB indication domain.

The ETWS indication field, the CMAS indication field, the system information modification indication field, the second system information modification indication field, and the MIB indication field are respectively 1-bit information, that is, 5-bit indication information in total. Under CE mode A, 5+ m2 equals the number of bits DCI format6-0A contains; under CE mode B, 5+ m2 is equal to the number of bits DCI format 6-0B contains.

In another specific example, the system message change indication signaling includes a system information modification indication field and a second system information modification indication field.

The system information modification indication field and the second system information modification indication field are respectively 1 bit of information, namely, 2 bits of indication information in total. Under CE mode A, 2+ m2 equals the number of bits DCI format6-0A contains; under CE mode B, 2+ m2 is equal to the number of bits DCI format 6-0B contains.

In another specific example, the system message change indication signaling includes a system information modification indication field, a second system information modification indication field, and a MIB indication field.

The system information modification indication field, the second system information modification indication field and the MIB indication field are respectively 1-bit information, i.e. 3-bit indication information in total. Under CE mode A, 3+ m2 equals the number of bits DCI format6-0A contains; under CE mode B, 3+ m2 is equal to the number of bits DCI format 6-0B contains.

In this example, the 1-bit ETWS indication field is used to indicate an ETWS primary notification and/or a secondary notification; the 1-bit CMAS indication domain is used for indicating CMAS notification; the 1-bit system information modification indication field is used for indicating a change of a Broadcast Control Channel (BCCH), excluding SIB10, SIB11, SIB12, and SIB14, and is not applicable to a case where an enhanced Discontinuous Reception (eDRX) period is greater than a BCCH modification period; the 1-bit second system information modification indication field is used for indicating BCCH change, does not include SIB10, SIB11, SIB12, SIB14, and is only applicable to the case that an enhanced discontinuous reception (eDRX) cycle is greater than a BCCH modification cycle; the 1-bit MIB indication field is used to indicate a change of information in the main-system information block MIB.

Step S72, the base station sends the DCI format to the user terminal.

In this example, if the ue does not use the configuration that the eDRX period is greater than the BCCH modification period, and the system information modification indication field is 1, it indicates that the ue needs to reacquire the system information.

In this example, if the eDRX period used by the ue is greater than the BCCH modification period, and the second system information modification indication field is 1, it indicates that the ue needs to reacquire the system information.

In this example, if the MIB indication field is 1, it indicates that the user terminal needs to reacquire the master information block MIB.

In this example, if the ETWS indication field is 1, which indicates that the user terminal needs to detect SIB1, the scheduling information list in SIB1 is acquired, and if the scheduling information list indicates that SIB10 and/or SIB11 are present, then SIB10 and/or SIB11 need to be further detected.

In this example, if the CMAS indication field is 1, which indicates that the user terminal needs to detect SIB1, the scheduling information list in SIB1 is acquired, and if the scheduling information list indicates that SIB12 exists, then SIB12 needs to be further detected.

An embodiment of the present application further provides an information indicating apparatus, the structure of which is shown in fig. 6, including:

the sending module 81: the first communication node is used for sending a downlink control information format to the second communication node;

In one embodiment, the first bit field includes a first number of bits having the same value.

In one embodiment, the first bit field includes a second number of reserved bits, and a third number of bits having the same value; wherein the second value is not less than 1 and the third value is greater than 1; the second reserved bit is used for indication of other information except for ETWS information and CMAS information.

In one embodiment, for coverage enhancement mode a, the total number of bits of the ETWS indication field, the CMAS indication field, and the first bit field is equal to the number of bits of downlink control information format 6-0A.

In one embodiment, for coverage enhancement mode B, the total number of bits of the ETWS indication field, the CMAS indication field, and the first bit field is equal to the number of bits of downlink control information format 6-0B.

In one embodiment, the second reserved bits include a master information block indication field for indicating a master information block content change.

In an embodiment, the second reserved bits include a system information block type 1 scheduling information field, and the system information block type 1 scheduling information field is used to indicate the number of repetitions of the system information block type 1 and a transport block size.

In one embodiment, the apparatus further comprises:

a determination module: a radio network temporary identifier for determining a downlink control information format comprising an ETWS indication domain, a CMAS indication domain and a first bit domain;

a scrambling module: and scrambling the downlink control information format by using the radio network temporary identifier.

In one embodiment, in the narrowband internet of things, a control channel search space for transmitting the ETWS indication and the CMAS indication has the same carrier configuration, starting subframe configuration, and maximum repetition number configuration as a search space dedicated to a control channel terminal.

An embodiment of the present application further provides an information receiving apparatus, which is shown in fig. 7 and includes:

the receiving module 91: the downlink control information format is used for the second communication node to receive the downlink control information format sent by the first communication node;

In one embodiment, the apparatus further comprises:

a first execution module: the method comprises the steps that a system information block type corresponding to an ETWS main notification is detected through the second communication node under the condition that the value of the ETWS indication domain is a fourth value;

a second execution module: and the second communication node is used for detecting the system information block types corresponding to the primary ETWS notification and the secondary ETWS notification when the value of the ETWS indication domain is a fifth value.

In one embodiment, the apparatus further comprises:

a third execution module: the scheduling information list is used for detecting a system information block type 1 through the second communication node and acquiring the scheduling information list in the system information block type 1 under the condition that the value of the ETWS indicating field is a fourth value; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, detecting, by the second communication node, the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

a fourth execution module: the method comprises the steps that a system information block type corresponding to an ETWS main notification is detected through the second communication node under the condition that the value of the ETWS indication domain is a fifth value;

a fifth execution module: and the second communication node is configured to detect a system information block type corresponding to the ETWS primary notification and the ETWS secondary notification when the value of the ETWS indication field is a sixth value.

In one embodiment, the apparatus further comprises:

a sixth execution module: for detecting, by the second communication node, a master information block, MIB, if the value of the ETWS indication field is a fourth value; detecting a system information block type 1 through the second communication node according to the information of the MIB, and acquiring a scheduling information list in the system information block type 1; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, detecting, by the second communication node, the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

a seventh execution module: under the condition that the value of the ETWS indicating field is a fifth value, detecting a system information block type 1 through the second communication node, and acquiring a scheduling information list in the system information block type 1; if the scheduling information list indicates that the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, detecting the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification through the second communication node.

In one embodiment, the method further comprises: the first bit field comprises a master information block, MIB, indication field; the device further comprises:

an eighth execution module: means for detecting, by the second communication node, a master information block, MIB, if the value of the ETWS indication field is a seventh value and the value of the master information block, MIB, indication field is a seventh value; detecting a system information block type 1 through the second communication node according to the information of the MIB, and acquiring a scheduling information list in the system information block type 1; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, detecting, by the second communication node, the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

a ninth execution module: the scheduling information list is used for detecting a system information block type 1 through the second communication node and acquiring a scheduling information list in the system information block type 1 under the condition that the value of the ETWS indication field is a seventh value and the value of the master information block MIB indication field is an eighth value; if the scheduling information list indicates that the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, detecting the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification through the second communication node.

In one embodiment, the apparatus further comprises:

a tenth execution module: and the second communication node is used for detecting the type of the system information block corresponding to the CMAS notification when the value of the CMAS indication domain is a ninth value.

In one embodiment, the apparatus further comprises:

an eleventh execution module: the second communication node is used for detecting the system information block type 1 and acquiring a scheduling information list in the system information block type 1 under the condition that the value of the CMAS indication domain is a ninth value; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, detecting the system information block type corresponding to the CMAS notification through the second communication node;

a twelfth execution module: and the second communication node is used for detecting the type of the system information block corresponding to the CMAS notification when the value of the CMAS indication domain is a tenth value.

In one embodiment, the apparatus further comprises:

a thirteenth execution module: for detecting, by the second communication node, a master information block, MIB, if the value of the CMAS indication field is a ninth value; detecting a system information block type 1 through the second communication node according to MIB information, and acquiring a scheduling information list in the system information block type 1; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, detecting the system information block type corresponding to the CMAS notification through the second communication node;

a fourteenth execution module: the second communication node is used for detecting the system information block type 1 and acquiring a scheduling information list in the system information block type 1 under the condition that the value of the CMAS indication domain is a tenth value; and if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, detecting the system information block type corresponding to the CMAS notification through the second communication node.

In one embodiment, the first bit field comprises a master information block, MIB, indication field; the device further comprises:

a fifteenth execution module: for detecting, by the second communication node, a master information block, MIB, if the value of the CMAS indication field is an eleventh value and the value of the master information block, MIB, indication field is an eleventh value; detecting a system information block type 1 through the second communication node according to the information of the MIB, and acquiring a scheduling information list in the system information block type 1; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, detecting the system information block type corresponding to the CMAS notification through the second communication node;

a sixteenth execution module: the scheduling information list is used for detecting a system information block type 1 through the second communication node and acquiring a scheduling information list in the system information block type 1 under the condition that the value of the CMAS indication domain is an eleventh value and the value of the master information block MIB indication domain is a twelfth value; and if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, detecting the system information block type corresponding to the CMAS notification through the second communication node.

Fig. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present application, and as shown in fig. 8, a user equipment 130 according to an embodiment of the present application includes: a memory 1303 and a processor 1304. The user device 130 may also include an interface 1301 and a bus 1302. The interface 1301 and the memory 1303 are connected to the processor 1304 through the bus 1302. The memory 1303 is used for storing instructions. The processor 1304 is configured to read the instruction to execute the technical solution of the above method embodiment applied to the ue, which has similar implementation principles and technical effects, and is not described herein again.

Fig. 9 is a schematic structural diagram of a base station according to an embodiment of the present application, and as shown in fig. 9, a base station 140 according to an embodiment of the present application includes: memory 1403 and processor 1404. The base station may also include an interface 1401 and a bus 1402. The interface 1401, the memory 1403 and the processor 1404 are connected via a bus 1402. The memory 1403 is used to store instructions. The processor 1404 is configured to read the instructions to execute the technical solution of the embodiment of the method applied to the base station, which achieves similar principles and technical effects and is not described herein again.

Fig. 10 is a schematic structural diagram of a communication system according to an embodiment of the present application, and as shown in fig. 10, the system includes: the user equipment 130 of the above embodiment, and the base station 140 of the above embodiment.

Specifically, the system further comprises: a first sending module: the first communication node is used for sending a downlink control information format to the second communication node;

the downlink control information format comprises an ETWS (earthquake and tsunami warning system) indication domain, a CMAS (commercial Mobile alert service) indication domain and a first bit domain; the ETWS indicating domain is used for determining an ETWS indication, and the CMAS indicating domain is used for determining a CMAS indication;

a receiving module: the method is used for the second communication node to receive the downlink control information format sent by the first communication node.

The above description is only exemplary embodiments of the present application, and is not intended to limit the scope of the present application.

It will be clear to a person skilled in the art that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a car mounted mobile station.

In general, the various embodiments of the application may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.

Embodiments of the application may be implemented by a data processor of a mobile device executing computer program instructions, for example in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

Any logic flow block diagrams in the figures of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on a memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology. The memory in the embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. RAM may include various forms such as Static random access memory (Static RAM, SRAM), Dynamic random access memory (Dynamic RAM, DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous DRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory of the systems and methods described herein includes, but is not limited to, these and any other suitable types of memory.

The processors of the embodiments of the present Application may be of any type suitable to the local technical environment, such as but not limited to general purpose computers, special purpose computers, microprocessors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable logic devices (FGPAs) or other Programmable logic devices, discrete Gate or transistor logic, discrete hardware components, or processors based on a multi-core Processor architecture. A general purpose processor may be a microprocessor or any conventional processor or the like. The processor described above may implement or perform the steps of the methods disclosed in the embodiments of the present application. The software modules may be located in ram, flash, rom, prom, or eprom, registers, among other storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

The foregoing has provided by way of exemplary and non-limiting examples a detailed description of exemplary embodiments of the present application. Various modifications and adaptations to the foregoing embodiments may become apparent to those skilled in the relevant arts in view of the following drawings and the appended claims without departing from the scope of the invention. Therefore, the proper scope of the invention is to be determined according to the claims.

Claims

1. An information indication method, comprising:

2. The method of claim 1, wherein the first bit field comprises a first number of bits having a same value.

3. The method of claim 1, wherein the first bit field comprises a second number of reserved bits and a third number of bits having the same value; wherein the second value is not less than 1 and the third value is greater than 1; the second reserved bit is used for indication of other information except for ETWS information and CMAS information.

4. The method according to any of claims 1-3, wherein the total number of bits of the ETWS indication field, the CMAS indication field, and the first bit field is equal to the number of bits of the downlink control information format6-0A for coverage enhancement mode A.

5. The method according to any of claims 1-3, wherein the total number of bits of the ETWS indication field, the CMAS indication field, and the first bit field is equal to the number of bits of downlink control information format 6-0B for coverage enhancement mode B.

6. The method of claim 3, wherein the second reserved bits comprise a Master information Block indicator field, and wherein the Master information Block indicator field is used to indicate a Master information Block content Change.

7. The method of claim 3, wherein the second reserved bits comprise a system information block type 1 scheduling information field, and wherein the system information block type 1 scheduling information field is used to indicate the repetition number and the transport block size of the system information block type 1.

8. The method of claim 1, further comprising:

determining a radio network temporary identifier for the downlink control information format comprising the ETWS indication domain, the CMAS indication domain and the first bit domain;

and scrambling the downlink control information format by using the wireless network temporary identifier.

9. The method of claim 1, wherein a control channel search space for transmitting the ETWS indication and the CMAS indication has a same carrier configuration, starting subframe configuration, and maximum repetition number configuration as a control channel terminal-specific search space in a narrowband internet of things.

10. An information receiving method, comprising:

11. The method of claim 10, further comprising:

under the condition that the value of the ETWS indication domain is a fourth value, the second communication node detects a system information block type corresponding to an ETWS main notification;

12. The method of claim 10, further comprising:

under the condition that the value of the ETWS indicating field is a fourth value, the second communication node detects a system information block type 1 and acquires a scheduling information list in the system information block type 1; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

13. The method of claim 10, further comprising:

in case the value of the ETWS indication field is a fourth value, the second communication node detects a master information block, MIB; according to the MIB information, the second communication node detects a system information block type 1 and obtains a scheduling information list in the system information block type 1; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

14. The method of claim 10, further comprising: the first bit field comprises a master information block, MIB, indication field; the method further comprises the following steps:

the second communication node detecting a master information block, MIB, if the value of the ETWS indication field is a seventh value and the value of the master information block, MIB, indication field is a seventh value; according to the MIB information, the second communication node detects a system information block type 1 and obtains a scheduling information list in the system information block type 1; if the scheduling information list indicates that a system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification;

under the condition that the value of the ETWS indication domain is a seventh value and the value of the master information block MIB indication domain is an eighth value, the second communication node detects a system information block type 1 and acquires a scheduling information list in the system information block type 1; if the scheduling information list indicates that the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification exists, the second communication node detects the system information block type corresponding to the ETWS main notification and/or the ETWS auxiliary notification.

15. The method of claim 10, further comprising:

16. The method of claim 10, further comprising:

under the condition that the value of the CMAS indication domain is a ninth value, the second communication node detects a system information block type 1 and acquires a scheduling information list in the system information block type 1; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification;

and under the condition that the value of the CMAS indication domain is a tenth value, the second communication node detects the type of the system information block corresponding to the CMAS notification.

17. The method of claim 10, further comprising:

under the condition that the value of the CMAS indication domain is a ninth value, the second communication node detects a master information block MIB; according to MIB information, the second communication node detects a system information block type 1 and obtains a scheduling information list in the system information block type 1; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification;

18. The method of claim 10, wherein the first bit field comprises a master information block, MIB, indication field; the method further comprises the following steps:

the second communication node detects a master information block MIB when the value of the CMAS indication field is an eleventh value and the value of the master information block MIB indication field is an eleventh value; according to the MIB information, the second communication node detects a system information block type 1 and obtains a scheduling information list in the system information block type 1; if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification;

under the condition that the value of the CMAS indication domain is an eleventh value and the value of the master information block MIB indication domain is a tenth value, the second communication node detects a system information block type 1 and acquires a scheduling information list in the system information block type 1; and if the scheduling information list indicates that the system information block type corresponding to the CMAS notification exists, the second communication node detects the system information block type corresponding to the CMAS notification.

19. An information indicating device, comprising:

20. The apparatus of claim 19, wherein the first bit field comprises a first number of bits having a same value.

21. The apparatus of claim 19, wherein the first bit field comprises a second number of reserved bits, and a third number of bits having the same value; wherein the second value is not less than 1 and the third value is greater than 1; the second reserved bit is used for indication of other information except for ETWS information and CMAS information.

22. The apparatus of any of claims 19-21, wherein a total number of bits of the ETWS indication field, the CMAS indication field, and the first bit field is equal to a number of bits of downlink control information format6-0A for coverage enhancement mode a.

23. The apparatus of any of claims 19-21, wherein a total number of bits of the ETWS indication field, the CMAS indication field, and the first bit field is equal to a number of bits of downlink control information format 6-0B for coverage enhancement mode B.

24. The apparatus of claim 21, wherein the second reserved bits comprise a master information block indication field, and wherein the master information block indication field is used for indicating a master information block content change.

25. The apparatus of claim 21, wherein the second reserved bits comprise a system information block type 1 scheduling information field, and wherein the system information block type 1 scheduling information field is used to indicate the number of repetitions of the system information block type 1 and a transport block size.

26. The apparatus of claim 19, further comprising:

27. The apparatus of claim 19, wherein a control channel search space for transmitting the ETWS indication and the CMAS indication has a same carrier configuration, starting subframe configuration, and maximum repetition number configuration as a control channel terminal-specific search space in a narrowband internet of things.

28. An information receiving apparatus, comprising:

29. The apparatus of claim 28, further comprising:

30. The apparatus of claim 28, further comprising:

31. The apparatus of claim 28, further comprising:

32. The apparatus of claim 28, wherein the method further comprises: the first bit field comprises a master information block, MIB, indication field; the device further comprises:

33. The apparatus of claim 28, further comprising:

34. The apparatus of claim 28, further comprising:

35. The apparatus of claim 28, further comprising:

36. The apparatus of claim 28, wherein the first bit field comprises a master information block, MIB, indication field; the device further comprises:

37. A storage medium, characterized in that the storage medium stores a computer program which, when executed by a processor, implements the method of any one of claims 1-18.