CN107371248B - Method and device for transmitting indication information in Internet of things - Google Patents
Method and device for transmitting indication information in Internet of things Download PDFInfo
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- CN107371248B CN107371248B CN201610320237.7A CN201610320237A CN107371248B CN 107371248 B CN107371248 B CN 107371248B CN 201610320237 A CN201610320237 A CN 201610320237A CN 107371248 B CN107371248 B CN 107371248B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention discloses a method and a device for transmitting indication information in the Internet of things, wherein the method comprises the following steps: determining first indication information, wherein the first indication information is used for indicating whether a transmission gap is started during a current Physical Downlink Control Channel (PDCCH) scheduling period; and sending Downlink Control Information (DCI) containing the first indication information to the terminal of the Internet of things, wherein the DCI also contains a state indication of time delay between the PDCCH and data transmitted by the PDCCH, and the DCI is used for solving the problem that the PDCCH has position indication errors when the PDCCH indicates the position of the scheduling data because other terminals of the Internet of things start discontinuous transmission.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a method and a device for transmitting indication information in the Internet of things.
Background
With the generation of the demand of the internet of things on a large scale and the continuous development of mobile communication technology, the connection demand is expanding from people to things, and the industry of the internet of things has started to present a well-spraying development trend. And a Narrow-Band Internet of Things (NB-IoT) based on a cellular is developed rapidly as a cellular network technology facing a low-power wide area network (ww an) of a global unified standard.
The function of coverage enhancement of the NB-IoT System is mainly achieved through two aspects, on one hand, the coverage is enhanced through the elevation of the power spectral density by using the power similar to that of the existing Global System for mobile communication (GSM) network on a narrower frequency band; on the other hand, the terminal of the internet of things can ensure the performance of the weak coverage area through a large amount of repeated transmission of data. But the large number of repeated transmissions of data also presents a problem. If the internet of things terminal in the scene adopts a continuous transmission mode, downlink resources are occupied for a long time, and downlink data of other internet of things terminals cannot be issued.
In order to solve this problem, currently, for an internet of things terminal that needs a large amount of data to be transmitted repeatedly, a discontinuous transmission mode may be adopted as shown in fig. 1. The discontinuous transmission mode mainly comprises a Gap Starting point period (Gap Starting point periodicity), a Gap size (Gap size) (in units of subframes (ms)), a Starting point of a Gap period (Starting point of Gap period) (absolute subframe number) and a repetition number Starting threshold (X)1) And when determining several parameters, the network side sends a System Information Block (SIB) message to the terminal of the Internet of things, wherein the SIB message comprises the following parameters: gap Starting point periodicity, Gap size, Starting point of gappederiod and X1(ii) a Wherein the Starting point of gap period is an absolute subframe number for indicating the Starting position of the periodic discontinuous transmission; the Gap size represents one period length and interval length of discontinuous transmission respectively by taking ms as a unit; x1Starting threshold for discontinuous transmission, when a certain IOT terminal is in a position with poor signal coverage, the transmission repetition times exceed X1In time, the NB-IoT system initiates discontinuous transmission according to Gap Starting point of Gap period, Gap size, and Starting point of Gap period. As shown in fig. 1, in the schematic diagram, the Gap Starting point periodicity is 64ms, and the Gap size is 8ms, for the terminal of the internet of things with poor signal coverage, the downlink data of the terminal of the internet of things will be placed in the Gap Starting point periodicity and at a position outside the Gap for transmission, while other terminals of the internet of things can transmit using the downlink resource not occupied by the terminal of the internet of things.
For a Physical Downlink Control Channel (PDCCH) and a time delay between uplink and Downlink data scheduled by the PDCCH, in the standard, relevant provisions are made: the PDCCH (DL grant) is separated from the downlink data by at least 4ms, and the time delay is indicated by 3-bit information. The interval between PDCCH (UL grant) and its scheduled uplink data is at least 8ms, and its time delay is indicated by 2-bit information. However, as shown in fig. 2, if there is an internet of things terminal with poor coverage in the system, and the number of downlink transmission repetitions of the internet of things terminal exceeds a set threshold, the system will start discontinuous transmission (transmission gap) for the internet of things terminal (hereinafter, denoted by terminal 1). However, for other terminals of the internet of things, since it does not know that the system has started the transmission gap for discontinuous transmission, if the original mode is still adopted to find the data position scheduled by the PDCCH through the delay indicator bit, the indicated position may coincide with the dedicated downlink transmission time period of the terminal 1, so that the correct data transmission position cannot be found.
Disclosure of Invention
The invention provides a transmission method and device of indication information in the Internet of things, which are used for solving the problem that a correct data transmission position cannot be found due to the fact that other terminals of the Internet of things start discontinuous transmission.
A transmission method of indication information in the Internet of things comprises the following steps: determining first indication information, wherein the first indication information is used for indicating whether discontinuous transmission Transmission is started during a current Physical Downlink Control Channel (PDCCH) scheduling period; and sending Downlink Control Information (DCI) containing the first indication information to an Internet of things terminal, wherein the DCI also contains a state indication of time delay between the PDCCH and data transmitted by the PDCCH.
Determining first indication information, including: and selecting at least one status indication from the status indications of time delay between the PDCCH and the data transmitted by the PDCCH as first indication information.
Determining first indication information, including: and increasing a fixed bit number in the DCI transmitted in the PDCCH, wherein the fixed bit number is used for bearing first indication information.
Before determining the first indication information, the method further comprises: it is determined whether Transmission gap is initiated during current PDCCH scheduling.
A transmission method of indication information in the Internet of things comprises the following steps: the method comprises the steps that an Internet of things terminal receives Downlink Control Information (DCI) containing first indication information; the terminal of the Internet of things determines a state indication and first indication information of time delay between a Physical Downlink Control Channel (PDCCH) and data transmitted by the PDCCH in the DCI, wherein the first indication information is used for indicating whether discontinuous Transmission gap is started or not during the current PDCCH scheduling period; and the terminal of the Internet of things calculates the transmission time slot of the PDSCH according to the state indication and the first indication information.
The internet of things terminal determines first indication information in the DCI, and the first indication information comprises the following steps: and when the terminal of the Internet of things determines that the DCI contains the status indication, determining first indication information corresponding to the status indication according to the corresponding relation between the set status indication and the first indication information.
The internet of things terminal determines first indication information in the DCI, and the first indication information comprises the following steps: and the terminal of the Internet of things determines first indication information in the fixed bit number added in the DCI transmitted in the PDCCH.
A transmission device for indicating information in the Internet of things comprises: a processing unit, configured to determine first indication information, where the first indication information is used to indicate whether discontinuous Transmission gap is started during a current PDCCH scheduling period; and a sending unit, configured to send a DCI (downlink control information) including the first indication information to an internet of things terminal, where the DCI also includes a status indication of a time delay between a PDCCH and data transmitted by the PDCCH.
The processing unit is specifically configured to select at least one status indication from status indications of time delay between the PDCCH and data transmitted by the PDCCH, as first indication information.
The processing unit is specifically configured to increase a fixed bit number in the DCI transmitted in the PDCCH, where the fixed bit number is used to carry first indication information.
The processing unit is further configured to determine whether to start a Transmission gap during a current PDCCH scheduling period.
A transmission device for indicating information in the Internet of things comprises: a receiving unit, configured to receive downlink control information DCI including first indication information; and the processing unit is used for determining a state indication and first indication information of time delay between a Physical Downlink Control Channel (PDCCH) and data transmitted by the PDCCH in the DCI, wherein the first indication information is used for indicating whether discontinuous Transmission (Transmission gap) is started during the current PDCCH scheduling period, and calculating the Transmission time slot of a PDSCH (physical downlink shared channel) according to the state indication and the first indication information.
The processing unit is specifically configured to, when it is determined that the DCI includes the status indication, determine first indication information corresponding to the status indication according to a correspondence between the set status indication and the first indication information.
The processing unit is specifically configured to determine first indication information in a fixed number of bits added to DCI transmitted in the PDCCH.
By adopting the technical scheme, the network side determines first indication information, transmits DCI (downlink control information) containing the first indication information to the terminal of the Internet of things, and the terminal of the Internet of things receives DCI containing the first indication information; and determining a state indication and first indication information of delay between a Physical Downlink Control Channel (PDCCH) and data transmitted by the PDCCH in the DCI, so that whether a transmission gap is started by a system can be determined for the terminal of the Internet of things, and the problem that the correct data transmission position cannot be found due to the fact that the terminal of the Internet of things still searches the data position scheduled by the PDCCH by adopting an original mode through a delay indication bit under the condition that the system is in discontinuous transmission under the common condition is solved.
Drawings
FIG. 1 is a schematic view of a gap configuration;
fig. 2 is a schematic diagram of retransmission times of terminals of the internet of things under different coverage levels;
fig. 3 is a flowchart of a transmission method of indication information in the internet of things according to a first embodiment of the present invention;
FIG. 4 is a diagram illustrating the PDCCH and its scheduling status indication classification;
FIG. 5 is a diagram illustrating PDCCH and PDSCH time delay indication classification;
FIG. 6 is a diagram illustrating PDCCH and PDSCH delay indication;
FIG. 7 is a schematic diagram of increasing fixed bit number in DCI to indicate PDCCH and PDSCH delay indication
Fig. 8 is a schematic structural diagram of a device for indicating a discontinuous transmission configuration in the internet of things according to a third embodiment of the present invention;
fig. 9 is a schematic structural diagram of a device for indicating a discontinuous transmission configuration in the internet of things according to a third embodiment of the present invention.
Detailed Description
The main implementation principle, the specific implementation mode and the corresponding beneficial effects of the technical solution of the embodiment of the present invention will be described in detail with reference to the accompanying drawings.
Example one
In the technical solution provided in the first embodiment of the present invention, at least one status indication is selected from status indications of a delay between a PDCCH and data transmitted by the PDCCH, and is elaborated as first indication information, where the selected status indication may be used as a conventional status indication, and the selected status indication may be used as the first indication information, as shown in fig. 3, a method for transmitting indication information in an internet of things is provided in the first embodiment of the present invention, and a specific processing flow thereof is as follows:
and 300, determining whether a Transmission gap is started in the current PDCCH scheduling period, if so, executing 301, and if not, ending the processing.
301, the network side determines the first indication information.
Wherein the first indication information is used for indicating whether Transmission gap is started during current PDCCH scheduling.
In the technical solution provided in the first embodiment of the present invention, at least one status indication is selected as the first indication information from the status indications of the time delay between the PDCCH and the data transmitted by the PDCCH.
302, send Downlink Control Information (DCI) including the first indication information to the internet of things terminal.
The DCI also includes a status indication between the PDCCH and data transmitted by the PDCCH.
In the technical solution provided in the first embodiment of the present invention, status indications indicating a time delay between a PDCCH and data transmitted by the PDCCH are grouped.
The status indication of the time delay between the PDCCH and the data transmitted by the PDCCH may include 8 statuses in total, which is specifically shown in table 1 below:
TABLE 1
As shown in fig. 4, in one embodiment of the present invention, the status indicators are divided into two groups, wherein:
A) the method comprises the following steps All the status indicators in the first group are used for normally indicating the time delay between the PDCCH and the data transmitted by the PDCCH, namely when the terminal of the Internet of things obtains a certain status indicator of the first group in the received DCI, the time delay between the PDCCH and the data transmitted by the PDCCH is directly calculated according to the time delay value indicated by the bit, and except an invalid (invalid) subframe defined by the narrow-band Internet of things, any subframe does not need to be skipped in the middle.
B) The method comprises the following steps All status indications in the second group need to indicate not only the time delay between the PDCCH and the data transmitted by the PDCCH, but also implicitly indicate that the system has started a Transmission gap during the data scheduling process, and a subframe dedicated to Transmission by other internet of things terminals may exist between the PDCCH and the corresponding scheduling data. Therefore, when the terminal of the internet of things obtains a certain state indication in the second group in the received DCI, when calculating a position of a corresponding Downlink Physical shared channel (PDSCH), a subframe that is unavailable for transmission by the terminal of the internet of things in the Gap starting point periodicity needs to be skipped.
303, the terminal of the internet of things receives the DCI containing the first indication information.
304, the terminal of the internet of things determines the status indication and the first indication information of the time delay between the PDCCH and the data transmitted by the PDCCH in the DCI.
305, the terminal of the internet of things calculates the transmission time slot of the PDSCH according to the state indication and the first indication information.
The detailed steps 301 to 305 are described in detail by taking the grouping shown in FIG. 5 as an example:
in the NB-IoT system, the status indication for indicating the downlink PDCCH and the PDCCH downlink scheduling data PDSCH includes 3-bit information, and there are 8 statuses altogether. Of these 8 states, 2 states are selected as the second set of states and the remaining 6 states are the first set of states, as shown in detail in fig. 5.
The 2 status indicators 110 and 111 in the second group of status indicators not only represent the time delay between the PDCCH and the PDSCH, but also implicitly represent that the system has started discontinuous transmission due to the existence of other terminals of the internet of things with poor coverage during the PDCCH scheduling. Therefore, if the terminal of the internet of things obtains one of the two states in the received DCI, it needs to skip the subframe where the discontinuous transmission user downlink transmission is started when calculating the PDSCH starting time.
While 6 states in the first set of state indications characterize that the system has not started a Transmission gap temporarily during this PDCCH scheduling. Therefore, if the terminal of the internet of things is in a certain delay state in the first group after successfully demodulating the delay information in the PDCCH, the terminal normally calculates the position of the PDSCH.
In specific implementation, the second group of status indications may be predefined, or the second group of status indications may be stored in the internet of things terminal in advance.
For the terminal of the internet of things, if the status indication obtained by the terminal of the internet of things in the received DCI is (0,0,1), at this time, the time delay between the PDCCH and the PDSCH is 8ms, and discontinuous transmission during which no other terminal of the internet of things exists is shown as UE 1 in fig. 6. If the status indication obtained by the terminal of the internet of things in the received DCI is (1,1,0), at this time, the time delay between the PDCCH and the PDSCH is 68ms, and discontinuous transmission of other terminals of the internet of things exists in the time delay, a subframe for downlink transmission of other terminals of the internet of things needs to be skipped when calculating the PDSCH, as shown in UE 2 in fig. 6.
Example two
In the technical solution proposed in the second embodiment of the present invention, a fixed bit number is added to DCI transmitted in a PDCCH, and the fixed bit number is used to carry the first indication information. The specific implementation is as follows:
the method comprises the following steps: and determining whether a Transmission gap is started in the current PDCCH scheduling period, if so, executing a second step, and if not, ending the processing.
And step two, the network side determines the first indication information.
Wherein the first indication information is used for indicating whether Transmission initiation is started during current PDCCH scheduling.
In the technical solution provided in the second embodiment of the present invention, 1bit information is added to DCI including a status indication, and the added 1bit information may be set to an effective value or an invalid value. When the added 1-bit information is set to a valid value of 1, it indicates that a Transmission gap is started during the current PDCCH scheduling. That is, between the PDCCH and the data transmitted by the PDCCH, when other internet of things terminals start discontinuous transmission, the internet of things terminals need to skip the subframes used by the other internet of things terminals for discontinuous transmission when receiving DCI information containing a valid value 1. And when the added 1bit information is set to an invalid value of 0, it indicates that Transmission gap is not started during the current PDCCH scheduling. Namely, between the PDCCH and the data transmitted by the PDCCH, no other terminal of the internet of things starts discontinuous transmission.
Specifically, the state indication state corresponds to the following table 2.
TABLE 2
In the technical solution provided in the second embodiment of the present invention, 1bit is added in addition to the 3bit for indicating the first indication information, and specifically, the correspondence relationship between the first indication information is shown in table 3 below.
TABLE 3
And step three, sending the DCI containing the first indication information to the terminal of the Internet of things.
The DCI also includes a status indication of the time delay between the PDCCH and the data transmitted by the PDCCH.
And step four, the terminal of the Internet of things receives the DCI containing the first indication information.
And step five, the terminal of the Internet of things determines the state indication and the first indication information of the time delay between the PDCCH and the data transmitted by the PDCCH in the DCI.
And step six, the terminal of the Internet of things calculates the transmission time slot of the PDSCH according to the state indication and the first indication information.
The detailed steps from the first step to the sixth step are explained in detail by taking an example:
in the NB-IoT system, the status indicator for indicating the downlink PDCCH and the PDCCH downlink scheduling data PDSCH includes 3-bit information, and 8 statuses coexist, specifically, see table 2 above. In the technical solution provided in the second embodiment of the present invention, 1bit is added to the DCI to carry the first indication information, where the first indication information may be set to 1 when the first indication information is an effective value, and may be set to 0 or a null when the first indication information is an invalid value.
For the terminal of the internet of things, if the terminal of the internet of things obtains a status indication of (0,0,1) in the received DCI, the increased 1bit is 0 or null, at this time, the time delay between the PDCCH and the PDSCH is 8ms, and there is no discontinuous transmission of other terminals of the internet of things in the period. If the state indication obtained by the terminal of the internet of things in the received DCI is (1,1,0), and the increased 1bit is 1, as shown in fig. 7, the time delay between the PDCCH and the PDSCH is 68ms, and discontinuous transmission of other terminals of the internet of things occurs in the period, a subframe for downlink transmission of other terminals of the internet of things needs to be skipped when the PDSCH is calculated.
EXAMPLE III
An embodiment of the present invention provides a transmission device for indicating information in an internet of things, where the transmission device is located at a network side, as shown in fig. 8, and a specific structure of the transmission device is as follows:
a processing unit 801, configured to determine first indication information, where the first indication information is used to indicate whether a Transmission gap is started during a current PDCCH scheduling period.
A sending unit 802, configured to send a DCI including the first indication information to an internet of things terminal, where the DCI further includes a status indication of a time delay between the PDCCH and data transmitted by the PDCCH.
Specifically, the processing unit 801 is specifically configured to select at least one status indication from status indications of time delay between the PDCCH and data transmitted by the PDCCH, as the first indication information.
Specifically, the processing unit 801 is specifically configured to increase a fixed bit number in the DCI transmitted in the PDCCH, where the fixed bit number is used to carry the first indication information.
Specifically, the processing unit 801 is further configured to determine whether to start a Transmission gap during the current PDCCH scheduling period.
An embodiment of the present invention provides a transmission device for indicating information in an internet of things, where the transmission device is located at a terminal side, as shown in fig. 9, and a specific structure of the transmission device is as follows:
a receiving unit 901, configured to receive downlink control information DCI including the first indication information.
A processing unit 902, configured to determine, in the DCI, a state indication and first indication information of a time delay between a physical downlink control channel PDCCH and data transmitted by the PDCCH, where the first indication information is used to indicate whether discontinuous Transmission gap is started during a current PDCCH scheduling period of the physical downlink control channel, and calculate a Transmission time slot of a PDSCH (physical downlink shared channel) according to the state indication and the first indication information.
Specifically, processing unit 902 is specifically configured to, when it is determined that the DCI includes the status indication, determine, according to a correspondence between the set status indication and the first indication information, first indication information corresponding to the status indication.
Specifically, processing unit 902 is specifically configured to determine the first indication information in the fixed number of bits added to the DCI transmitted in the PDCCH.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical disk storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A transmission method of indication information in the Internet of things is characterized by comprising the following steps:
determining first indication information, wherein the first indication information is used for indicating whether discontinuous Transmission gap is started or not during current Physical Downlink Control Channel (PDCCH) scheduling;
sending Downlink Control Information (DCI) containing the first indication information to an Internet of things terminal, wherein the DCI also contains a state indication of time delay between the PDCCH and data transmitted by the PDCCH;
wherein, the determining the first indication information comprises:
selecting at least one status indication from status indications of time delay between PDCCH and data transmitted by the PDCCH as first indication information;
or, determining the first indication information includes:
and increasing a fixed bit number in the DCI transmitted in the PDCCH, wherein the fixed bit number is used for bearing first indication information.
2. The method of claim 1, prior to determining the first indication information, further comprising:
it is determined whether Transmission gap is initiated during current PDCCH scheduling.
3. A transmission method of indication information in the Internet of things is characterized by comprising the following steps:
the method comprises the steps that an Internet of things terminal receives Downlink Control Information (DCI) containing first indication information;
the terminal of the Internet of things determines a state indication and first indication information of time delay between a Physical Downlink Control Channel (PDCCH) and data transmitted by the PDCCH in the DCI, wherein the first indication information is used for indicating whether discontinuous Transmission gap is started or not during the current PDCCH scheduling period;
the terminal of the Internet of things calculates the transmission time slot of the PDSCH according to the state indication and the first indication information;
wherein, the determining, by the terminal of the internet of things, first indication information in the DCI includes:
when the terminal of the Internet of things determines that the DCI contains the status indication, determining first indication information corresponding to the status indication according to the corresponding relation between the set status indication and the first indication information;
or, the determining, by the internet of things terminal, first indication information in the DCI includes:
and the terminal of the Internet of things determines first indication information in the fixed bit number added in the DCI transmitted in the PDCCH.
4. A transmission device for indicating information in the Internet of things is characterized by comprising:
a processing unit, configured to determine first indication information, where the first indication information is used to indicate whether discontinuous Transmission gap is started during a current PDCCH scheduling period;
a sending unit, configured to send a DCI (downlink control information) including the first indication information to an internet of things terminal, where the DCI further includes a status indication of a time delay between a PDCCH and data transmitted by the PDCCH;
the processing unit is specifically configured to select at least one status indication from status indications of time delay between a PDCCH and data transmitted by the PDCCH, as first indication information;
or, the processing unit is specifically configured to increase a fixed bit number in the DCI transmitted in the PDCCH, where the fixed bit number is used to carry the first indication information.
5. The apparatus of claim 4, wherein the processing unit is further configured to determine whether a Transmission gap is enabled during a current PDCCH scheduling.
6. A transmission device for indicating information in the Internet of things is characterized by comprising:
a receiving unit, configured to receive downlink control information DCI including first indication information;
a processing unit, configured to determine, in the DCI, a state indication and first indication information of a time delay between a physical downlink control channel PDCCH and data transmitted by the PDCCH, where the first indication information is used to indicate whether discontinuous Transmission gap is started during a current PDCCH scheduling period of the physical downlink control channel, and calculate a Transmission time slot of a PDSCH (physical downlink shared channel) according to the state indication and the first indication information;
the processing unit is specifically configured to, when it is determined that the DCI includes the status indication, determine first indication information corresponding to the status indication according to a correspondence between the set status indication and the first indication information;
or, the processing unit is specifically configured to determine the first indication information in a fixed number of bits added to the DCI transmitted in the PDCCH.
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| CN116783963A (en) * | 2021-01-11 | 2023-09-19 | 华为技术有限公司 | Communication method and device |
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| CN107371248A (en) | 2017-11-21 |
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