CN115913487A - Information transmission method, device, related equipment and storage medium - Google Patents

Abstract

The application discloses an information transmission method, an information transmission device, a terminal, network equipment and a storage medium. The method comprises the following steps: a terminal receives Downlink Control Information (DCI) on a first carrier; the DCI carries first information, and the DCI does not carry information used for resource allocation; the first information comprises at least second information; the second information indicates carrier information of at least one carrier of a Physical Downlink Control Channel (PDCCH) to be detected.

Description

Information transmission method, device, related equipment and storage medium

technical field

The present application relates to the field of wireless communication, and in particular to an information transmission method, device, related equipment and storage medium.

Background technique

In both Long Term Evolution (LTE) and New Radio (NR) systems, the throughput of users can be improved through carrier aggregation. In related technologies, the NR system supports configuring a maximum of 16 carriers for a user equipment (UE) in a connected state through radio resource control (RRC) signaling, and the LTE system supports a maximum of 32 carriers. The UE determines the dynamic uplink and downlink data transmission format on each carrier by monitoring the scheduling information of the active carrier (that is, the physical downlink control channel (PDCCH)).

However, during the scheduling process of carrier aggregation, the terminal needs to blindly detect the PDCCH on all activated carriers to determine whether there is data scheduling, which greatly increases the overhead of the terminal.

Contents of the invention

To solve related technical problems, embodiments of the present application provide an information transmission method, device, related equipment, and storage medium.

The technical scheme of the embodiment of the application is realized in this way:

An embodiment of the present application provides an information transmission method applied to a terminal, including:

Receive downlink control information (DCI) on a first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the second information Indicates carrier information of at least one carrier of the PDCCH to be detected.

In the above scheme, the method also includes:

Using the second information, determine at least one carrier of the PDCCH to be detected.

In the above solution, the first information further includes third information, and the third information indicates the valid time length of the second information;

The valid time length of the second information is determined by using the third information.

In the above scheme, the method also includes:

receiving fourth information, the fourth information indicating a plurality of candidate valid time lengths;

Using the third information to determine one of the multiple candidate effective time lengths as the effective time length of the second information.

In the above scheme, the method also includes:

The PDCCH is detected on at least one pre-configured or pre-defined carrier outside the effective time length indicated by the third indication information.

In the above solution, the first information further includes fifth information, and the fifth information indicates a carrier index;

Using the fifth information to determine a second carrier that subsequently receives the DCI.

In the above solution, the first information further includes sixth information, where the sixth information indicates the active bandwidth part (BWP) on each carrier in the at least one carrier;

Using the sixth information to determine an activated BWP for each carrier in the at least one carrier.

In the above scheme, the first information further includes seventh information, and the seventh information indicates the timing of hybrid automatic repeat request acknowledgment (HARQ-ACK) of the DCI;

Using the sixth information to determine the feedback time slot of the HARQ-ACK of the DCI;

Send the HARQ information of the DCI on the determined feedback time slot.

In the above solution, the first information further includes eighth information, and the eighth information is a row allocation index (DAI);

Based on the eighth information, determine whether the DCI has missed detection, and if it is determined that the DCI has missed detection, detect the PDCCH on at least one preconfigured or predefined carrier.

The embodiment of the present application also provides an information transmission method applied to a network device, including:

Send DCI to the terminal on the first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the second information indicates to be detected Carrier information of at least one carrier of the PDCCH.

In the above solution, the first information further includes third information, and the third information indicates the valid time length of the second information.

In the above scheme, the method also includes:

Sending fourth information to the terminal, where the fourth information indicates multiple candidate effective time lengths; where the third information indicates one effective time length among the multiple candidate effective time lengths.

In the above solution, the first information further includes fifth information, and the fifth information indicates a carrier index.

In the above solution, the first information further includes sixth information, where the sixth information indicates the activated BWP on each carrier in the at least one carrier.

In the above solution, the first information further includes seventh information, where the seventh information indicates the timing of the HARQ-ACK of the DCI.

In the above solution, the first information further includes eighth information, and the eighth information is DAI.

The embodiment of the present application also provides an information transmission device, including:

A receiving unit, configured to receive DCI on a first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the second information Indicates carrier information of at least one carrier of the PDCCH to be detected.

The embodiment of the present application also provides an information transmission device, including:

A sending unit, configured to send DCI to a terminal on a first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the first The second information indicates carrier information of at least one carrier of the PDCCH to be detected.

The embodiment of the present application also provides a terminal, including: a first processor and a first communication interface; wherein,

The first communication interface is used to receive DCI on a first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; The second information indicates carrier information of at least one carrier of the PDCCH to be detected.

The embodiment of the present application also provides a network device, including: a second processor and a second communication interface; wherein,

The second communication interface is configured to send DCI to the terminal on the first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information ; The second information indicates carrier information of at least one carrier of the PDCCH to be detected.

An embodiment of the present application also provides a terminal, including: a first processor and a first memory for storing a computer program that can run on the processor,

Wherein, when the first processor is configured to run the computer program, it executes the steps of any method on the terminal side above.

An embodiment of the present application also provides a network device, including: a second processor and a second memory for storing a computer program that can run on the processor,

Wherein, when the second processor is configured to run the computer program, it executes the steps of any method on the network device side.

The embodiment of the present application also provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of any method on the terminal side are realized, or the steps of any method on the network device side are realized.

In the information transmission method, device, related equipment, and storage medium provided by the embodiments of the present application, the network equipment sends DCI to the terminal on the first carrier; the DCI carries the first information, and the DCI does not carry information for resource allocation ; The first information includes at least second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected. In the solution provided by the embodiment of the present application, the network side instructs the terminal to detect the carrier of the PDCCH without detecting all the carriers. In this way, the number of activated carriers can be dynamically selected, flexible scheduling of carriers is realized, and energy saving can be realized on demand. .

Description of drawings

FIG. 1 is a schematic flow diagram of a method for information transmission according to an embodiment of the present application;

FIG. 2 is a time schematic diagram for realizing BWP switching in the embodiment of the present application and realizing BWP switching in related technologies;

FIG. 3 is a schematic flow diagram of a second information transmission method in the embodiment of the present application;

FIG. 4 is a schematic flow diagram of a third information transmission method according to an embodiment of the present application;

FIG. 5 is a functional schematic diagram of realizing cell dormancy according to the solution of the embodiment of the present application;

FIG. 6 is a schematic structural diagram of an information transmission device according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of another information transmission device according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of an information transmission system according to an embodiment of the present application.

Detailed ways

The application will be further described in detail below in conjunction with the accompanying drawings and embodiments.

The terminal monitors the position of the carrier of the PDCCH (English can be expressed as carrier) mainly includes the following two methods:

The first method is self-carrier scheduling, and the terminal monitors the PDCCH on its own carrier;

The second method is cross-carrier scheduling. When a carrier is configured for cross-carrier scheduling, its scheduling carrier will be configured at the same time. That is, for this carrier, it needs to monitor on the search space corresponding to the carrier on its scheduling carrier. His PDCCH.

Wherein, the carrier configured by the RRC can be activated or deactivated through a medium access control control element (MAC CE, also referred to as MAC-CE).

For the first method above, the terminal needs to blindly detect the PDCCH on all activated carriers to determine whether there is data scheduling. Corresponding to the second manner above, the terminal needs to blindly detect the PDCCH in the search space corresponding to the scheduled carrier on all activated scheduling carriers. That is to say, whether it is the first method or the second method, for the terminal, the carriers activated on the MAC CE need to perform blind detection, which means that the energy consumption of blind detection increases with the number of activated carriers. increases, which will greatly increase the power consumption of the terminal.

Therefore, a more flexible indication method is needed to reduce unnecessary blind detection of the terminal in the case of multi-carrier operation, and at the same time achieve the purpose of flexible scheduling of each carrier.

On the other hand, in the face of more and more abundant spectrum, such as FR1 frequency band below 6G, FR2 24.25GHz–52.6GHz frequency band, frequency band greater than 52.6G, etc., and considering some scattered low-frequency spectrum, it is expected to introduce more flexible spectrum use In this way, all the spectrum can be used more efficiently while reducing network overhead.

The same cell is constituted by multiple carriers, and only one of the multiple carriers is used as the anchor carrier, and other carriers among the multiple carriers are used as non-carriers to improve the utilization rate of the carriers. Receive system messages, paging messages, etc. on the anchor carrier, and other carriers can be used by terminals for random access and data transmission. That is, for a terminal in the idle state, one downlink anchor carrier can be seen, which is used to receive the necessary system information, and multiple uplink carriers can be seen at the same time, and can be selectively accessed on these carriers; for a terminal in the connected state, it is hoped that carrier scheduling can be performed The enhancement of the carrier makes the use of the carrier more flexible and improves the utilization efficiency of the carrier.

Based on this, in various embodiments of the present application, the terminal first obtains the carrier information that needs to be monitored next by receiving a DCI on a carrier (that is, the anchor carrier) that does not carry resource allocation information, and then obtains The detection of the control channel is performed on the carrier corresponding to the carrier information.

In the solution provided by the embodiment of the present application, the network side instructs the terminal to detect the carrier of the PDCCH without detecting all the carriers. In this way, the number of activated carriers can be dynamically selected, flexible scheduling of carriers is realized, and energy saving can be realized on demand. .

An embodiment of the present application provides an information transmission method applied to a terminal, as shown in FIG. 1 , the method includes:

Step 101: Receive DCI on the first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the second information indicates to be Detecting carrier information of at least one carrier of the PDCCH;

Step 102: Using the second information, determine at least one carrier of the PDCCH to be detected.

Wherein, in actual application, the terminal may be called a UE, or may also be called a user.

In this embodiment of the present application, multiple carriers can be used to form the same cell. If there is only one anchor carrier among the multiple carriers, the terminal can obtain system information through the anchor carrier, and can select a non-anchor carrier Perform random access. Wherein, the embodiment of the present application does not limit the process of how to select a non-anchor carrier for random access. After the terminal performs random access through a non-anchor carrier, the non-anchor carrier may be called a primary carrier (expressed as Pcarrier in English), and the DCI is received through the non-anchor carrier.

Here, as the position of the terminal changes, the main carrier can be changed. For example, when the base station finds that the best main carrier of the terminal changes based on the measurement signal of the terminal, the main carrier can be switched. Correspondingly, the receiving The first carrier of the DCI also changes accordingly, that is, becomes the main carrier after switching.

Wherein, in actual application, the switching of the main carrier may be semi-static, and specifically, the switching of the main carrier may be realized through RRC signaling configuration.

The switching of the main carrier may also be dynamic, and specifically, the switching of the main carrier may be realized through DCI signaling configuration; wherein, the corresponding configuration information may be carried by the DCI.

Based on this, in an embodiment, the first information may further include fifth information, and the fifth information indicates a carrier index;

Using the fifth information to determine a second carrier that subsequently receives the DCI.

Exemplarily, the M bits in the DCI realize the switching of the main carrier dynamically; wherein, M=ceil(log2(N)), wherein ceil() represents an upper integer operation, and N corresponds to the associated anchor point in the current cell The number of carriers and non-anchor carriers. Assume that there is 1 associated anchor carrier in the current cell, and the number of non-anchor carriers is 4, then N=1+4=5.

Exemplarily, the DCI is bound with a search space, and when receiving the DCI on the first carrier, the terminal may perform periodic detection based on the bound search space.

Since the DCI carries carrier information indicating the carrier of the PDCCH to be detected and does not carry information for resource allocation, the terminal needs to perform control channel detection on the carrier indicated by the DCI. Therefore, the DCI can be called The first-level DCI, the DCI detected on the carrier indicated by the DCI may be called the second-level DCI.

In practical applications, the second information may represent the carrier identity of at least one carrier of the PDCCH to be detected, such as a carrier index (expressed as index in English), that is, the second information indicates each carrier in the at least one carrier of the PDCCH to be detected In other words, the indication manner of the second information is the carrier index of each carrier in at least one carrier of the PDCCH to be detected. The terminal may determine the corresponding carrier based on the carrier index that needs to detect the PDCCH indicated by the second information, and then detect the corresponding PDCCH on the activated BWP of the corresponding carrier. For those carriers that do not need to detect the PDCCH, the terminal does not need to detect the PDCCH, which saves the complexity of the terminal performing blind detection on each activated carrier, thereby saving the energy consumption of the terminal.

The at least one carrier of the PDCCH to be detected may also be indicated by a bitmap (bitmap). Therefore, the indication manner indicated by the second information may be a bitmap. The terminal may determine the corresponding carrier based on the bitmap, and then detect the corresponding PDCCH on the activated BWP of the corresponding carrier. For those carriers that do not need to detect the PDCCH, the terminal does not need to detect the PDCCH, which saves the complexity of the terminal performing blind detection on each activated carrier, thereby saving the energy consumption of the terminal.

In an embodiment, the first information may further include third information, and the third information indicates the valid time length of the second information;

The valid time length of the second information is determined by using the third information.

Wherein, the effective time of at least one carrier to be detected by the terminal can be indicated by the third information, that is, by the time length indication. Exemplarily, assuming that the detection period of the DCI is 5 ms, it means that the DCI is detected only once every 5 ms. At the same time, the DCI may indicate how long the current state of carrier detection needs to last, for example, 5ms, 3ms or 1ms.

Here, in practical application, multiple time lengths may be configured through high-layer signaling (such as RRC signaling), and then the terminal selects an effective time length from the configured multiple time lengths according to the indication of the DCI.

Based on this, in an embodiment, the method may also include:

receiving fourth information, the fourth information indicating a plurality of candidate valid time lengths;

Using the third information to determine one of the multiple candidate effective time lengths as the effective time length of the second information.

Wherein, the terminal may receive the fourth information through high layer signaling.

In practical applications, when the time length indicated by the third information is exceeded and the effective time indicated by the next DCI detection time point is not yet reached, the terminal can return to a default detection state, such as detecting all carriers (that is, detect the PDCCH on all activated carriers), or only detect the primary carrier (that is, detect the PDCCH only on the primary carrier).

Based on this, in an embodiment, the PDCCH is detected on at least one pre-configured or pre-defined carrier beyond the effective time length indicated by the third indication information (which may be expressed as Expired in English).

In practical applications, usually, the terminal performs control channel detection on each carrier, and then reads the BWP indication field in the control channel to obtain the BWP that needs to be switched. In this way, the network side needs to instruct the terminal to switch to The terminal can switch to the next BWP only after the next BWP. Therefore, the terminal needs to wait for the scheduling DCI before switching the BWP. In this way, the interruption time of the BWP switching is increased. Therefore, in the embodiment of the present application, the DCI can also indicate the active BWP on the carrier, that is, indicate the BWP while indicating the carrier, and the terminal can simultaneously adjust the carrier and BWP, and can switch BWP in advance , thereby saving the interruption time of BWP switching.

Based on this, in an embodiment, the first information further includes sixth information, where the sixth information indicates the activated BWP on each carrier in the at least one carrier;

Using the sixth information to determine an activated BWP for each carrier in the at least one carrier.

Exemplarily, as shown in Figure 2, the upper part is a related art solution, the terminal detects the control channel located at BWP1 on carrier 0 in time slot n, indicates that BWP switching is to be performed, and switches to BWP2, assuming that the BWP switching transition time is 2 time slots, then the BWP switching is completed in n+2 time slots. However, the detection time slot of the PDCCH on the carrier 1 is n+1, so the BWP switching indicated by the PDCCH can only be completed in the n+3 time slot. The second half is the solution of the embodiment of this application. The DCI on the periodic main carrier indicates the active BWP on the carrier that needs to be detected, and the BWP switching between carrier 0 and carrier 1 is detected on BWP1 of carrier 0 in time slot n. Indicates that there is no need to wait for the control channel detection moment of carrier 1, that is, slot n+1. Considering that the effective time is 2 time slots, carrier 1 can switch the transmission on the BWP at time slot n+2. Compared with The switching is completed at time slot n+3 compared to the related art, which reduces the transmission delay.

In practical applications, if the terminal misses the DCI detection this time, according to the related technology, the default behavior of the terminal (which can be expressed as default in English) is: to carry out the carrier wave based on the instruction of the DCI received last time. Control channel detection. Then there will be an inconsistency between the carrier scheduled by the base station for sending data and the carrier scheduled for receiving data by the terminal. For example, assuming that carriers 1-10 are activated through MAC CE, the DCI indication received correctly last time only needs to detect carriers 1-3, and this time the DCI indicates that the terminal needs to detect carriers 2-6, but due to If the terminal misses DCI detection this time, according to related technologies, the terminal still detects according to carriers 1-3, and the scheduling on carriers 4-6 will all be missed. In order to solve this situation, a HARQ feedback mechanism can be set for the DCI.

Based on this, in an embodiment, the first information further includes seventh information, and the seventh information indicates the timing of the HARQ-ACK of the DCI;

Using the sixth information to determine the feedback time slot of the HARQ-ACK of the DCI;

Send the HARQ information of the DCI on the determined feedback time slot.

Exemplarily, an information field in the DCI, for example named DCI-to-HARQ_feedback timing indicator (DCI-to-HARQ_feedback timing indicator), the information in the information field indicates the timing of the HARQ-ACK of the DCI, Through the indication of the information in the DCI information field, the terminal can determine the time slot of the HARQ feedback of the DCI, and the HARQ feedback bits of this type of non-corresponding PDSCH can be connected in series behind the feedback bits of the corresponding PDSCH to form a HARQ feedback codebook , when the terminal determines that the DCI has been missed this time, it can feed back a negative acknowledgment (NACK) or discontinuous transmission (DTX) to the base station. After the base station receives the feedback, for the above example, it can be avoided in subsequent scheduling The data is scheduled on the carriers 4-6, but the data is scheduled on the carriers 1-3, so as to avoid the inconsistency of understanding between the base station and the terminal.

Wherein, the terminal may find out whether the DCI is missing detection based on the DAI carried in the control information on each carrier.

Based on this, in an embodiment, the first information further includes eighth information, the eighth information is DAI, that is, the eighth information indicates DAI;

Based on the eighth information, determine whether the DCI has missed detection, and if it is determined that the DCI has missed detection, detect the PDCCH on at least one pre-configured or predefined carrier, that is, perform the carrier based on the default behavior control channel detection.

Here, the DAI-based detection mechanism is a mechanism for the base station to count the scheduling within the same feedback window. For the above example, generally speaking, for a PDCCH that schedules a PDSCH, the DAI carried by the PDCCH can allow the terminal to find itself Whether there is data omission. However, in the embodiment of the present application, the DCI carrying the first information on the first carrier does not actually schedule data transmission, but in order to allow the terminal to discover the missed detection of the DCI, the DCI also carries the DAI information, and is combined with other real The DAI in the DCI of the scheduling data is counted uniformly, and through the counting, the terminal can find that it has received the control channels of carriers 1-3. If the DAI is discontinuous, the terminal can determine that some carriers have not been detected by itself, so that it may be caused by the missed detection of the DCI. In order to avoid subsequent missed detections, the terminal will return to the state of detecting all carriers 1-10, that is, the terminal will return to the state in which all carriers activated by the MAC CE are all detected, thereby avoiding missed detections.

Correspondingly, the embodiment of the present application also provides an information transmission method, which is applied to a network device, specifically a base station, such as a gNB, as shown in FIG. 3 , the method includes:

Step 300: Determine first information;

Step 301: Send DCI to the terminal on the first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the second information Indicates carrier information of at least one carrier of the PDCCH to be detected.

Wherein, in actual application, the network device determines the first information as required, which is not limited in this embodiment of the present application.

In one embodiment, the method may also include:

Sending fourth information to the terminal, where the fourth information indicates multiple candidate effective time lengths; where the third information indicates one effective time length among the multiple candidate effective time lengths.

The embodiment of the present application also provides an information transmission method, as shown in Figure 4, the method includes:

Step 401: The network device sends DCI to the terminal on the first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the first The second information indicates the carrier information of at least one carrier of the PDCCH to be detected;

Step 402: After receiving the DCI, the terminal uses the second information to determine at least one carrier of the PDCCH to be detected.

Here, it should be noted that: the specific processing procedures of the terminal and the network device have been described in detail above, and will not be repeated here.

Using the solution provided by the embodiment of this application, cell dormancy (which can be expressed as cell dormancy in English) can also be realized. Specifically, as shown in Figure 5, when the network side needs to use a certain carrier for dormancy, it can continuously instruct the terminal not to Perform PDCCH detection on the corresponding carrier. From the perspective of the terminal, since there is no need to consume functions to perform PDCCH detection on the corresponding carrier, this carrier can be understood as being in a dormant state, that is, it can be equivalent to realizing The function of cell dormancy is realized. Wherein, in FIG. 5 , the terminal is instructed to detect the control channel on subsequent carriers 1, 3, and 4 through the second information in the DCI in time slot n. Then other carriers can be dormant. In time slot n+2, the terminal is instructed to subsequently detect the control channel on carriers 1, 2, 4, and 5, and other carriers can be dormant.

In the information transmission method provided by the embodiment of the present application, the network device sends DCI to the terminal on the first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least Second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected. In the solution provided by the embodiment of the present application, the network side instructs the terminal to detect the carrier of the PDCCH without detecting all the carriers. In this way, the number of activated carriers can be dynamically selected, flexible scheduling of carriers is realized, and energy saving can be realized on demand. .

In order to implement the method of the embodiment of the present application, the embodiment of the present application also provides an information transmission device, which is set on the terminal, as shown in Figure 6, the device includes:

The receiving unit 601 is configured to receive DCI on a first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the second The information indicates carrier information of at least one carrier of the PDCCH to be detected.

Wherein, in one embodiment, as shown in Figure 6, the device may also include:

The detecting unit 602 is configured to determine at least one carrier of the PDCCH to be detected by using the second information.

In an embodiment, the receiving unit 601 is further configured to receive fourth information, where the fourth information indicates multiple candidate valid time lengths;

The detection unit 602 is further configured to use the third information to determine one of the plurality of candidate effective time lengths as the effective time length of the second information.

Wherein, in an embodiment, the detection unit 602 is configured to detect the PDCCH on at least one pre-configured or pre-defined carrier outside the effective time length indicated by the third indication information.

In an embodiment, the first information further includes fifth information, and the fifth information indicates a carrier index;

The detection unit 602 is further configured to use the fifth information to determine a second carrier that receives the DCI subsequently.

In an embodiment, the first information further includes sixth information, and the sixth information indicates the activated BWP on each carrier in the at least one carrier;

The detecting unit 602 is further configured to determine an activated BWP of each carrier in the at least one carrier by using the sixth information.

In an embodiment, the first information further includes seventh information, and the seventh information indicates the timing of HARQ-ACK of the DCI;

The detection unit 602 is further configured to:

Using the sixth information to determine the feedback time slot of the HARQ-ACK of the DCI;

Send the HARQ information of the DCI on the determined feedback time slot.

In an embodiment, the first information further includes eighth information, and the eighth information is DAI;

The detection unit 602 is further configured to determine whether the DCI has missed detection based on the eighth information, and if it is determined that the DCI has missed detection, detect the detected DCI on at least one pre-configured or predefined carrier. The PDCCH described above.

In practical application, the receiving unit 601 may be realized by a communication interface in the information transmission device; the detection unit 602 may be realized by a processor in the information transmission device combined with a communication interface.

In order to implement the method on the network device side of the embodiment of the present application, the embodiment of the present application also provides an information transmission device, which is set on the network device, as shown in FIG. 7 , the device includes:

A sending unit 701, configured to send DCI to a terminal on a first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the The second information indicates carrier information of at least one carrier of the PDCCH to be detected.

Wherein, in one embodiment, as shown in Figure 7, the device may also include:

A determining unit 702, configured to determine the first information.

In an embodiment, the sending unit 701 is further configured to send fourth information to the terminal, where the fourth information indicates a plurality of candidate effective time lengths; wherein, the third information indicates that the plurality of candidate One of the valid time lengths.

In practical application, the sending unit 701 may be realized by a communication interface in the information transmission device; the determination unit 702 may be realized by a processor in the information transmission device.

It should be noted that when the information transmission device provided in the above-mentioned embodiment transmits information, it only uses the division of the above-mentioned program modules for illustration. That is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the information transmission device and the information transmission method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiments, and will not be repeated here.

Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a terminal, as shown in FIG. 8 , the terminal 800 includes:

The first communication interface 801 is capable of exchanging information with the network side;

The first processor 802 is connected to the first communication interface 801 to implement information interaction with the network side, and is used to execute the method provided by one or more technical solutions on the terminal side when running the computer program;

A first memory 803 on which the computer program is stored.

Specifically, the first communication interface 801 is configured to receive DCI on a first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least the first Two information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected.

In an embodiment, the first processor 802 is configured to determine at least one carrier of the PDCCH to be detected by using the second information.

In an embodiment, the first communication interface 801 is further configured to receive fourth information, where the fourth information indicates multiple candidate valid time lengths;

The first processor 802 is further configured to use the third information to determine one of the multiple candidate valid time lengths as the valid time length of the second information.

Wherein, in an embodiment, the first processor 802 is configured to use the first communication interface 801 on at least one pre-configured or pre-defined carrier beyond the effective time length indicated by the third indication information The PDCCH is detected.

In an embodiment, the first information further includes fifth information, and the fifth information indicates a carrier index;

The first processor 802 is further configured to use the fifth information to determine a second carrier that subsequently receives the DCI.

In an embodiment, the first information further includes sixth information, and the sixth information indicates the activated BWP on each carrier in the at least one carrier;

The first processor 802 is further configured to determine an activated BWP of each carrier in the at least one carrier by using the sixth information.

In an embodiment, the first information further includes seventh information, and the seventh information indicates the timing of HARQ-ACK of the DCI;

The first processor 802 is further configured to:

Using the sixth information to determine the feedback time slot of the HARQ-ACK of the DCI;

Send the HARQ information of the DCI through the first communication interface 801 on the determined feedback time slot.

In an embodiment, the first information further includes eighth information, and the eighth information is DAI;

The first processor 802 is further configured to determine whether the DCI has missed detection based on the eighth information, and if it is determined that the DCI has missed detection, use the first communication interface 801 to pre-configure Or detect the PDCCH on at least one pre-defined carrier.

It should be noted that: the specific processing procedures of the first processor 802 and the first communication interface 801 can be understood with reference to the above method.

Of course, in actual application, various components in the terminal 800 are coupled together through the bus system 804 . It can be understood that the bus system 804 is used to realize connection and communication between these components. In addition to the data bus, the bus system 804 also includes a power bus, a control bus and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 804 in FIG. 8 .

The first memory 803 in the embodiment of the present application is used to store various types of data to support the operation of the terminal 800 . Examples of such data include: any computer program for operating on terminal 800 .

The methods disclosed in the foregoing embodiments of the present application may be applied to the first processor 802 or implemented by the first processor 802 . The first processor 802 may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the first processor 802 or an instruction in the form of software. The aforementioned first processor 802 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The first processor 802 may implement or execute various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the first memory 803, and the first processor 802 reads the information in the first memory 803, and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the terminal 800 may be implemented by one or more Application Specific Integrated Circuits (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, ProgrammableLogic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), field-programmable gate array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic components to achieve , used to execute the aforementioned method.

Based on the hardware implementation of the above program modules, and in order to implement the method on the network device side of the embodiment of the present application, the embodiment of the present application also provides a network device. As shown in FIG. 9 , the network device 900 includes:

The second communication interface 901 is capable of information interaction with the terminal;

The second processor 902 is connected to the second communication interface 901 to implement information interaction with the terminal, and is used to execute the method provided by one or more technical solutions on the network device side when running the computer program;

A second memory 903 on which the computer program is stored.

Specifically, the second communication interface 901 is configured to send DCI to the terminal on the first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information at least The second information is included; the second information indicates carrier information of at least one carrier of the PDCCH to be detected.

Wherein, in an embodiment, the second processor 902 is configured to determine the first information.

In an embodiment, the second communication interface 901 is further configured to send fourth information to the terminal, the fourth information indicating multiple candidate effective time lengths; wherein the third information indicates the multiple One valid time length among candidate valid time lengths.

It should be noted that: the specific processing procedures of the second processor 902 and the second communication interface 901 can be understood with reference to the above method.

Of course, in actual application, various components in the network device 900 are coupled together through the bus system 904 . It can be understood that the bus system 904 is used to realize connection and communication between these components. In addition to the data bus, the bus system 904 also includes a power bus, a control bus and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 904 in FIG. 9 .

The second memory 903 in the embodiment of the present application is used to store various types of data to support the operation of the network device 900 . Examples of such data include: any computer programs for operating on network device 900 .

The methods disclosed in the foregoing embodiments of the present application may be applied to the second processor 902 or implemented by the second processor 902 . The second processor 902 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be implemented by an integrated logic circuit of hardware in the second processor 902 or an instruction in the form of software. The aforementioned second processor 902 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The second processor 902 may implement or execute various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the second memory 903, and the second processor 902 reads the information in the second memory 903, and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the network device 900 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, Microprocessors, or other electronic components for performing the aforementioned methods.

It can be understood that the memory (the first memory 803 and the second memory 903 ) in this embodiment of the present application may be a volatile memory or a nonvolatile memory, and may also include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (ROM, Read Only Memory), programmable read-only memory (PROM, Programmable Read-Only Memory), erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory) Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory (Flash Memory), Magnetic Surface Memory, CD-ROM, Or CD-ROM (Compact Disc Read-Only Memory); magnetic surface storage can be disk storage or tape storage. The volatile memory may be random access memory (RAM, Random Access Memory), which is used as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM, Static Random Access Memory), Synchronous Static Random Access Memory (SSRAM, Synchronous Static Random Access Memory), Dynamic Random Access Memory ( DRAM, Dynamic Random Access Memory), Synchronous Dynamic Random Access Memory (SDRAM, Synchronous Dynamic Random Access Memory), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), Enhanced Synchronous Dynamic Random access memory (ESDRAM, Enhanced SynchronousDynamic Random Access Memory), synchronous connection dynamic random access memory (SLDRAM, SyncLinkDynamic Random Access Memory), direct memory bus random access memory (DRRAM, Direct RambusRandom Access Memory). The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

In order to implement the method provided by the embodiment of the present application, the embodiment of the present application further provides an information transmission system, as shown in FIG. 10 , the system includes: a network device 1001 and a terminal 1002 .

Here, it should be noted that: the specific processing procedures of the network device 1001 and the terminal 1002 have been described in detail above, and will not be repeated here.

In an exemplary embodiment, the embodiment of the present application also provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 803 storing a computer program, and the above computer program can be executed by the terminal 800 The first processor 802 is executed to complete the steps described in the aforementioned terminal-side method, and another example includes a second memory 903 storing computer programs. The above-mentioned computer program can be executed by the second processor 902 of the network device 900 to complete the aforementioned network device method steps. The computer-readable storage medium can be memories such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

It should be noted that: "first", "second", etc. are used to distinguish similar objects, and not necessarily used to describe a specific order or sequence.

In addition, the technical solutions described in the embodiments of the present application may be combined arbitrarily if there is no conflict.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the protection scope of the present application.

Claims (23)

1. An information transmission method, characterized in that it is applied to a terminal, comprising: Receive downlink control information DCI on the first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the second information indicates to be Carrier information of at least one carrier of a physical downlink control channel PDCCH is detected. 2. The method according to claim 1, characterized in that the method further comprises: Using the second information, determine at least one carrier of the PDCCH to be detected. 3. The method according to claim 1, wherein the first information further includes third information, and the third information indicates the valid time length of the second information; The valid time length of the second information is determined by using the third information. 4. method according to claim 3, is characterized in that, described method also comprises: receiving fourth information, the fourth information indicating a plurality of candidate valid time lengths; Using the third information to determine one of the multiple candidate effective time lengths as the effective time length of the second information. 5. method according to claim 3, is characterized in that, described method also comprises: The PDCCH is detected on at least one pre-configured or pre-defined carrier outside the effective time length indicated by the third indication information. 6. The method according to claim 1, wherein the first information further includes fifth information, and the fifth information indicates a carrier index; Using the fifth information to determine a second carrier that subsequently receives the DCI. 7. The method according to claim 1, wherein the first information further includes sixth information, and the sixth information indicates an active bandwidth part (BWP) on each carrier in the at least one carrier; Using the sixth information to determine an activated BWP for each carrier in the at least one carrier. 8. The method according to claim 1, wherein the first information further includes seventh information, and the seventh information indicates the timing of HARQ-ACK confirmation of the hybrid automatic repeat request of the DCI; Using the sixth information to determine the feedback time slot of the HARQ-ACK of the DCI; Send the HARQ information of the DCI on the determined feedback time slot. 9. The method according to claim 1, wherein the first information further includes eighth information, and the eighth information is a downlink allocation index (DAI); Based on the eighth information, determine whether the DCI has missed detection, and if it is determined that the DCI has missed detection, detect the PDCCH on at least one preconfigured or predefined carrier. 10. An information transmission method, characterized in that it is applied to network equipment, comprising: Send DCI to the terminal on the first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the second information indicates to be detected Carrier information of at least one carrier of the PDCCH. 11. The method according to claim 10, wherein the first information further includes third information, and the third information indicates a valid time length of the second information. 12. The method of claim 11, further comprising: Sending fourth information to the terminal, where the fourth information indicates multiple candidate effective time lengths; where the third information indicates one effective time length among the multiple candidate effective time lengths. 13. The method according to claim 10, wherein the first information further includes fifth information, and the fifth information indicates a carrier index. 14. The method according to claim 10, wherein the first information further comprises sixth information, and the sixth information indicates an activated BWP on each carrier in the at least one carrier. 15. The method according to claim 10, wherein the first information further includes seventh information, and the seventh information indicates the timing of the HARQ-ACK of the DCI. 16. The method according to claim 10, wherein the first information further includes eighth information, and the eighth information is DAI. 17. An information transmission device, comprising: A receiving unit, configured to receive DCI on a first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the second information Indicates carrier information of at least one carrier of the PDCCH to be detected. 18. An information transmission device, characterized in that it comprises: A sending unit, configured to send DCI to a terminal on a first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; the first The second information indicates carrier information of at least one carrier of the PDCCH to be detected. 19. A terminal, characterized by comprising: a first processor and a first communication interface; wherein, The first communication interface is used to receive DCI on a first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information; The second information indicates carrier information of at least one carrier of the PDCCH to be detected. 20. A network device, characterized by comprising: a second processor and a second communication interface; wherein, The second communication interface is configured to send DCI to the terminal on the first carrier; the DCI carries first information, and the DCI does not carry information for resource allocation; the first information includes at least second information ; The second information indicates carrier information of at least one carrier of the PDCCH to be detected. 21. A terminal, characterized by comprising: a first processor and a first memory for storing computer programs that can run on the processor, Wherein, when the first processor is used to run the computer program, it executes the steps of the method according to any one of claims 1-9. 22. A network device, characterized by comprising: a second processor and a second memory for storing computer programs that can run on the processor, Wherein, when the second processor is configured to run the computer program, it executes the steps of the method according to any one of claims 10 to 16. 23. A storage medium, on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 9 are realized, or the steps of any one of claims 10 to 16 are realized. A step of said method.

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