CN115913487A

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

Info

Publication number: CN115913487A
Application number: CN202111159647.5A
Authority: CN
Inventors: 胡丽洁; 胡南
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-04-04
Also published as: WO2023051500A1

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 communications, and in particular, to an information transmission method, an information transmission apparatus, a related device, and a storage medium.

Background

In both Long Term Evolution (LTE) and new air interface (NR) systems, throughput of users can be improved in a carrier aggregation manner. In the related art, the NR system supports configuring a maximum of 16 carriers for a connected User Equipment (UE) 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 (i.e., physical Downlink Control Channel (PDCCH)) of the active carriers.

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

Disclosure of Invention

In order to solve related technical problems, embodiments of the present application provide an information transmission method, an information transmission apparatus, related devices, and a storage medium.

The technical scheme of the embodiment of the application is realized as follows:

the embodiment of the application provides an information transmission method, which is applied to a terminal and comprises the following steps:

receiving 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 comprises 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 further comprises:

and determining at least one carrier of the PDCCH to be detected by utilizing the second information.

In the above solution, the first information further includes third information, where the third information indicates an effective time length of the second information;

and determining the effective time length of the second information by using the third information.

In the foregoing solution, the method further includes:

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

determining one of the candidate valid time lengths as the valid time length of the second information using the third information.

In the above scheme, the method further comprises:

detecting the PDCCH on at least one carrier which is configured in advance or defined in advance, outside the valid time length indicated by the third indication information.

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

determining a second carrier for subsequently receiving the DCI using the fifth information.

In the above scheme, the first information further includes sixth information indicating an active bandwidth part (BWP) on each of the at least one carrier;

determining an active BWP for each of the at least one carrier using the sixth information.

In the above solution, the first information further includes seventh information, where the seventh information indicates timing of hybrid automatic repeat request acknowledgement (HARQ-ACK) of the DCI;

determining a feedback slot of HARQ-ACK of the DCI by using the sixth information;

and transmitting 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);

and determining whether the DCI has missed detection or not based on the eighth information, and detecting the PDCCH on at least one carrier which is configured in advance or defined in advance under the condition that the DCI has missed detection.

The embodiment of the present application further provides an information transmission method, which is applied to a network device, and includes:

transmitting 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 at least comprises second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected.

In the foregoing solution, the first information further includes third information, and the third information indicates an effective time length of the second information.

In the above scheme, the method further comprises:

sending fourth information to the terminal, wherein the fourth information indicates a plurality of candidate valid time lengths; wherein the third information indicates one of the plurality of candidate valid time lengths.

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

In the above scheme, the first information further includes sixth information indicating active BWP on each of the at least one carrier.

In the foregoing scheme, the first information further includes seventh information, and the seventh information indicates the timing of HARQ-ACK of the DCI.

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

An embodiment of the present application further provides an information transmission apparatus, 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 comprises at least second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected.

a transmitting unit, configured to transmit 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 comprises 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 further provides a terminal, including: a first processor and a first communication interface; wherein,

the first communication interface 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 comprises 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 further provides a network device, including: a second processor and a second communication interface; wherein,

the second communication interface is used for sending 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 comprises 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 further provides a terminal, including: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is configured to execute the steps of any of the above-mentioned methods at the terminal side when running the computer program.

An embodiment of the present application further provides a network device, including: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is configured to execute the steps of any one of the methods of the network device side when the computer program is executed.

An embodiment of the present application further provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any one of the methods in the terminal side, or implements the steps of any one of the methods in the network device side.

According to the information transmission method, the information transmission device, the related equipment and the storage medium, the network equipment 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 comprises at least second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected. According to the scheme provided by the embodiment of the application, the network side indicates the terminal to detect the carrier of the PDCCH without detecting all carriers, so that the number of activated carriers can be dynamically selected, flexible scheduling of the carriers is realized, and energy conservation can be realized according to needs.

Drawings

Fig. 1 is a schematic flowchart of an information transmission method according to an embodiment of the present application;

fig. 2 is a timing diagram illustrating BWP handover implementation according to an embodiment of the present invention and a related art;

fig. 3 is a flowchart illustrating a second method for transmitting information according to an embodiment of the present application;

FIG. 4 is a flowchart illustrating a third method for transmitting information according to an embodiment of the present application;

fig. 5 is a functional diagram illustrating a scheme according to an embodiment of the present application for implementing cell dormancy;

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 apparatus 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 Description

The present application will be described in further detail with reference to the following drawings and examples.

The method for the terminal to monitor the carrier (english can be expressed as carrier) position of the PDCCH mainly includes the following two ways:

the first mode is self-carrier scheduling, and a terminal monitors a PDCCH on a local carrier;

the second way, cross-carrier scheduling, when a carrier is configured as cross-carrier scheduling, it will configure its scheduling carrier at the same time, that is, for the carrier, it needs to monitor its PDCCH on the search space corresponding to the carrier on its scheduling carrier.

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

For the first approach, the terminal needs to blindly detect PDCCH on all activated carriers to determine whether there is data scheduling. Corresponding to the second method, the terminal needs to perform blind detection on the PDCCH in the search space corresponding to the scheduled carrier on all activated scheduling carriers. That is, in both the first and second manners, blind detection is required for the terminal on the carriers activated by the MAC CE, which means that the energy consumption of the blind detection increases with the increase of the number of activated carriers, and thus the power consumption of the terminal is greatly increased.

Therefore, a more flexible indication method is needed to reduce unnecessary blind detection of the terminal under the multi-carrier working condition, and simultaneously, the purpose of flexibly scheduling each carrier can be achieved.

On the other hand, in the face of more and more abundant frequency spectrums, such as the frequency band below FR 1G, the frequency band FR 2.25 GHz-52.6GHz, the frequency band greater than 52.6G, etc., some scattered frequency spectrums of low frequencies are considered, so it is desirable to introduce a more flexible frequency spectrum using mode, and be able to use all frequency spectrums more efficiently, and reduce network overhead at the same time.

The utilization rate of the carrier waves is improved in a mode that only one carrier wave in the plurality of carrier waves is used as an anchor carrier wave and other carrier waves in the plurality of carrier waves are used as non-carrier waves. And receiving system information, paging information and the like on the anchor carrier, wherein other carriers can be used for the terminal to carry out random access and carry out data transmission. That is, for an idle terminal, a downlink anchor carrier is visible for receiving necessary system messages, and a plurality of uplink carriers are visible at the same time, and can be selectively accessed on the carriers; for a connected terminal, it is desirable to enhance carrier scheduling, so that the use of carriers is more flexible and the utilization efficiency of carriers is improved.

Based on this, in various embodiments of the present application, a terminal first receives a DCI that does not carry information for resource allocation on a carrier (i.e., an anchor carrier), obtains carrier information that needs to be monitored next, and then performs detection of a control channel on a carrier corresponding to the obtained carrier information.

According to the scheme provided by the embodiment of the application, the network side indicates the terminal to detect the carrier of the PDCCH without detecting all carriers, so that the number of activated carriers can be dynamically selected, flexible scheduling of the carriers is realized, and energy conservation can be realized according to needs.

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

step 101: receiving DCI on a first carrier; the DCI carries first information, and the DCI does not carry information used for resource allocation; the first information at least comprises second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected;

step 102: and determining at least one carrier of the PDCCH to be detected by utilizing the second information.

In practical application, the terminal may be referred to as a UE or a user.

In the embodiment of the application, the same cell can be formed by a plurality of carriers, and the terminal can select a non-anchor carrier to perform random access by acquiring system information and the like through the anchor carrier under the condition that only one anchor carrier exists in the plurality of carriers. The embodiment of the present application does not limit how to select the non-anchor carrier for random access. When the terminal performs random access through a non-anchor carrier, the non-anchor carrier may be referred to as a primary carrier (which may be expressed as Pcarrier in english), and the DCI is received through the non-anchor carrier.

Here, the change of the primary carrier may be performed according to the change of the location of the terminal, for example, when the base station finds that the optimal primary carrier of the terminal changes based on the measurement signal of the terminal, the primary carrier may be switched, and accordingly, the first carrier receiving the DCI changes, that is, the first carrier is changed to the switched primary carrier.

In practical application, the switching of the primary carrier may be semi-static, and specifically, the switching of the primary carrier may be implemented in a RRC signaling configuration manner.

The switching of the main carrier may also be dynamic, and specifically, the switching of the main carrier may be implemented in a DCI signaling configuration manner; 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, where the fifth information indicates a carrier index;

Illustratively, M bits in the DCI enable dynamic switching of a primary carrier; where M = ceil (log 2 (N)), where ceil () represents a rounding-up operation, N corresponding to the number of anchor and non-anchor carriers associated in the current cell. Assuming that the number of anchor carriers associated in the current cell is 1 and the number of non-anchor carriers is 4, N =1+4=5.

Illustratively, the DCI may be bundled into a search space, and the terminal may perform periodic detection based on the bundled search space when receiving the DCI on the first carrier.

Because the DCI carries carrier information indicating a carrier of a PDCCH to be detected and does not carry information for resource allocation, and the terminal needs to perform control channel detection on the carrier indicated by the DCI, the DCI may be referred to as first-stage DCI, and the DCI detected on the carrier indicated by the DCI may be referred to as second-stage DCI.

In practical application, the second information may represent a carrier identifier of at least one carrier of the PDCCH to be detected, such as a carrier index (expressed in english as an index), that is, the second information indicates a carrier index of each carrier of the at least one carrier of the PDCCH to be detected, that is, the indicating manner of the second information is the carrier index of each carrier of the at least one carrier of the PDCCH to be detected. The terminal may determine a corresponding carrier based on the carrier index of the PDCCH that needs to be detected and indicated by the second information, and then detect the corresponding PDCCH on the activated BWP of the corresponding carrier. For those carriers which do not need to detect the PDCCH, the terminal does not need to detect the PDCCH any more, so that the complexity of blind detection of the terminal on each activated carrier is saved, and the energy consumption of the terminal is saved.

At least one carrier of the PDCCH to be detected may also be indicated by a bitmap (bitmap), and therefore, the indication manner indicated by the second information may be bitmap. The terminal can 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 which do not need to detect the PDCCH, the terminal does not need to detect the PDCCH any more, so that the complexity of blind detection of the terminal on each activated carrier is saved, and the energy consumption of the terminal is saved.

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

The effective time of at least one carrier to be detected by the terminal can be indicated through the third information, namely through the time length indication. Exemplarily, assuming that the detection period of the DCI is 5ms, it is stated that the DCI is detected once every 5 ms. Meanwhile, how long the state of the carrier currently needing to be detected lasts can be indicated in the DCI, for example, the state lasts for 5ms,3ms or 1 ms.

Here, in actual application, a plurality of time lengths may be configured through higher layer signaling (for example, RRC signaling), and then the terminal may select one valid time length from the configured plurality of time lengths according to the indication of the DCI.

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

Wherein the terminal may receive the fourth information through a higher 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 may return to a default detection state, such as detecting all carriers (i.e., detecting PDCCH on all activated carriers), or detecting only the primary carrier (i.e., detecting 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, except for the valid time length (which may be expressed as extended in english) indicated by the third indication information.

In practical application, generally, the terminal performs control channel detection on each carrier, and then reads the BWP indication field in the control channel to obtain the BWP to be switched, in this way, the network side needs to indicate the terminal to switch to the next BWP in the scheduling DCI, and the terminal can switch to the next BWP, so the terminal needs to wait for the scheduling DCI to perform the BWP switching, and thus, the interruption time of the BWP switching is increased. Therefore, in the embodiment of the present application, the DCI may further indicate active BWP on the carrier, that is, indicate the carrier and indicate BWP at the same time, and the terminal may perform carrier and BWP adjustment simultaneously, and may perform BWP handover in advance, thereby saving the interruption time of BWP handover.

Based on this, in an embodiment, the first information further includes sixth information indicating an active BWP on each of the at least one carrier;

Illustratively, as shown in fig. 2, the upper half is a related art scheme, the terminal detects a control channel on carrier 0 at BWP1 in slot n, indicates that BWP switching is to be performed, and switches to BWP2, and if the BWP switching transition time is 2 slots, then BWP switching is completed in n +2 slots. And the detection time slot of the PDCCH on the carrier 1 is n +1, the BWP handover indicated by the PDCCH can only be completed in the n +3 time slot. In the scheme of the embodiment of the present application, a DCI on a periodic primary carrier indicates an active BWP on a carrier that needs to be detected, and a BWP switching indication of a carrier 0 and a carrier 1 is detected on a BWP1 of a carrier 0 in a slot n, so that it is not necessary to wait for a control channel detection time of the carrier 1, that is, the slot n +1, and considering that an effective time is 2 slots, transmission on the BWP can be switched in the slot n +2 for the carrier 1, which reduces transmission delay compared with a case where switching is completed in the slot n +3 in the related art.

In practical application, if the terminal fails to detect the DCI this time, according to the related art, the default (english may be expressed as default) behavior of the terminal is: and carrying out control channel detection of the carrier wave based on the indication of the DCI received last time. Inconsistency between the carrier on which the base station transmits the data schedule and the carrier on which the terminal receives the data schedule occurs. For example, suppose that carriers 1 to 10 are activated by the MAC CE, the DCI indication received correctly last only needs to detect carriers 1 to 3, and the DCI indicates that the terminal needs to detect carriers 2 to 6, however, since the terminal fails to detect the DCI this time, the terminal still detects according to carriers 1 to 3 according to the related art, and then the scheduling on carriers 4 to 6 is missed. To address this, a HARQ feedback mechanism may be set for the DCI.

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

Illustratively, an information field in the DCI is named as a DCI-to-HARQ feedback timing indicator (DCI-to-HARQ _ feedback timing indicator), where the information of the information field indicates the timing of HARQ-ACK of the DCI, and the terminal can determine the HARQ feedback time slot of the DCI through the indication of the information of the DCI information field, and may serially connect HARQ feedback bits of such non-corresponding PDSCHs behind feedback bits of corresponding PDSCHs to form an HARQ feedback codebook, and after the terminal determines that the DCI is detected this time in a missed manner, a Negative Acknowledgement (NACK) or Discontinuous Transmission (DTX) may be fed back to the base station, and after the base station receives the feedback, for the above example, in subsequent scheduling, it may be avoided that data is scheduled on carriers 4 to 6, but data is scheduled on carriers 1 to 3, so as to avoid inconsistency understood by the base station and the terminal.

Wherein, the terminal may find whether the DCI is missed based on the DAI carried by the control information on each carrier.

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

and determining whether the DCI has missed detection or not based on the eighth information, and detecting the PDCCH on at least one pre-configured or pre-defined carrier under the condition that the DCI has missed detection, namely, carrying out control channel detection of the carrier based on a default behavior.

Here, the DAI-based detection mechanism is a mechanism in which the base station counts scheduling in the same feedback window, and for the above example, generally speaking, for one PDCCH that schedules PDSCH, the DAI carried by the PDCCH enables the terminal to find whether there is data missing. In the embodiment of the present application, the DCI carrying the first information on the first carrier does not really schedule data transmission, but in order to enable the terminal to find the missed detection of the DCI, the DCI also carries the DAI information, and the DAI information is counted together with the DAIs in the DCI of other really scheduled data, and by counting, the terminal can find that the terminal has received the control channels of the carriers 1 to 3. If the DAI is discontinuous, the terminal may determine that some carriers are not detected by itself, and thus determine that the DCI failure may be caused. In order to avoid subsequent continuous missed detection, the terminal returns to the state of all detected carriers 1 to 10, that is, the terminal returns to the state of all detected carriers activated by the MAC CE, so as to avoid missed detection.

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

step 300: determining first information;

step 301: transmitting 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 comprises at least second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected.

In practical application, the network device determines the first information as needed, which is not limited in the embodiment of the present application.

In an embodiment, the method may further comprise:

An embodiment of the present application further provides an information transmission method, as shown in fig. 4, the method includes:

step 401: the network equipment 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 at least comprises second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected;

step 402: and after receiving the DCI, the terminal determines at least one carrier of the PDCCH to be detected by using the second information.

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

By using the scheme provided by the embodiment of the present application, cell dormancy (which may be expressed as cell dormancy) may also be implemented, and specifically, as shown in fig. 5, when a network side needs to use a certain carrier for dormancy, the network side may continuously indicate that the terminal does not need to perform PDCCH detection on the corresponding carrier, and from the perspective of the terminal, since the PDCCH detection is performed on the corresponding carrier without consuming a function, the carrier may be understood as being in a dormant state, that is, the cell dormancy function may be equivalently implemented. Wherein, in fig. 5, the terminal is instructed to detect the control channel on the

subsequent carrier

1,3,4 in slot n by the second information in the DCI. The other carriers may go to sleep. Indicating at slot n +2 that the terminal subsequently detects the control channel on

carrier

1,2,4,5, the other carriers may be dormant.

In the information transmission method provided by the embodiment of the 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 used for resource allocation; the first information at least comprises second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected. According to the scheme provided by the embodiment of the application, the network side indicates the terminal to detect the carrier of the PDCCH without detecting all carriers, so that the number of activated carriers can be dynamically selected, flexible scheduling of the carriers is realized, and energy conservation can be realized according to needs.

In order to implement the method according to the embodiment of the present application, an embodiment of the present application further provides an information transmission apparatus, which is disposed on a terminal, and as shown in fig. 6, the apparatus includes:

a receiving unit 601, 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 comprises at least second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected.

In an embodiment, as shown in fig. 6, the apparatus may further include:

a detecting unit 602, 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 a plurality of candidate valid time lengths;

the detecting unit 602 is further configured to determine one valid time length from the candidate valid time lengths as the valid time length of the second information by using the third information.

In an embodiment, the detecting unit 602 is configured to detect the PDCCH on at least one preconfigured or predefined carrier outside the valid time duration indicated by the third indication information.

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

the detecting unit 602 is further configured to determine, by using the fifth information, a second carrier on which the DCI is subsequently received.

In an embodiment, the first information further includes sixth information indicating active BWP on each of the at least one carrier;

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

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

the detecting unit 602 is further configured to:

determining a feedback time slot of HARQ-ACK of the DCI by using the sixth information;

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

the detecting unit 602 is further configured to determine, based on the eighth information, whether the DCI has a missing detection, and detect the PDCCH on at least one preconfigured or predefined carrier when the missing detection exists in the DCI.

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

In order to implement the method on the network device side in the embodiment of the present application, an embodiment of the present application further provides an information transmission apparatus, which is disposed on a network device, and as shown in fig. 7, the apparatus includes:

a transmitting unit 701, configured to transmit 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 at least comprises second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected.

In an embodiment, as shown in fig. 7, the apparatus may further include:

a determining unit 702 is 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 valid time lengths; wherein the third information indicates one of the plurality of candidate valid time lengths.

In actual application, the sending unit 701 may be implemented by a communication interface in an information transmission device; the determining unit 702 may be implemented by a processor in the information transmission apparatus.

It should be noted that: in the information transmission device provided in the above embodiment, only the division of the program modules is exemplified when information is transmitted, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the device may be divided into different program modules to complete all or part of the processing described above. In addition, the information transmission apparatus and the information transmission method provided by the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and are not described herein again.

Based on the hardware implementation of the program module, and in order to implement the method at the terminal side in the embodiment of the present application, an embodiment of the present application further provides a terminal, as shown in fig. 8, where the terminal 800 includes:

a first communication interface 801 capable of performing information interaction with a network side;

a first processor 802, connected to the first communication interface 801, for implementing information interaction with a network side, and implementing a method provided by one or more technical solutions of the terminal side when running a computer program;

a first memory 803, said computer program being stored on the first memory 803.

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 used for resource allocation; the first information at least comprises second 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 a plurality of candidate valid time lengths;

the first processor 802 is further configured to determine one of the candidate validity periods as the validity period of the second information using the third information.

In an embodiment, the first processor 802 is configured to detect the PDCCH on at least one preconfigured or predefined carrier through the first communication interface 801, except for the valid duration indicated by the third indication information.

the first processor 802 is further configured to determine a second carrier for subsequently receiving the DCI using the fifth information.

In an embodiment, the first information further comprises sixth information indicating an active BWP on each of the at least one carrier;

the first processor 802 is further configured to determine an active BWP for each carrier of the at least one carrier using the sixth information.

the first processor 802 is further configured to:

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

the first processor 802 is further configured to determine whether there is a missing detection in the DCI based on the eighth information, and detect the PDCCH on at least one preconfigured or predefined carrier through the first communication interface 801 if it is determined that there is a missing detection in the DCI.

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 methods described above.

Of course, in practice, the various components in the terminal 800 are coupled together by a bus system 804. It is understood that the bus system 804 is used to enable communications among the components for the connection. The bus system 804 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, 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 method disclosed in the embodiment of the present application can be applied to the first processor 802, or implemented by the first processor 802. The first processor 802 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the first processor 802. The first Processor 802 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The first processor 802 may implement or perform the methods, steps, and logic blocks 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 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 conjunction with its hardware.

In an exemplary embodiment, the terminal 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, programmable Logic Devices (PLDs), complex Programmable Logic Devices (CPLDs), field-Programmable Gate arrays (FPGAs), general purpose processors, controllers, micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

Based on the hardware implementation of the program module, and in order to implement the method on the network device side in the embodiment of the present application, an embodiment of the present application further provides a network device, and as shown in fig. 9, the network device 900 includes:

a second communication interface 901 capable of performing information interaction with a terminal;

a second processor 902, connected to the second communication interface 901, for implementing information interaction with a terminal, and when running a computer program, executing a method provided by one or more technical solutions at the network device side;

a second memory 903, said computer program being stored on the second memory 903.

Specifically, the second communication interface 901 is 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 comprises at least second information; 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, where the fourth information indicates a plurality of candidate valid time lengths; wherein the third information indicates one of the plurality of 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 by referring to the above-mentioned methods.

Of course, in actual practice, the various components in network device 900 are coupled together by bus system 904. It is understood that the bus system 904 is used to enable connected communication between these components. The bus system 904 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various buses are labeled as bus system 904 in figure 9.

The second memory 903 in the embodiments 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 program for operating on network device 900.

The method disclosed in the embodiment 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 having signal processing capabilities. In implementation, the steps of the above method may be implemented by an integrated logic circuit of hardware or an instruction in the form of software in the second processor 902. The second processor 902 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 902 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present application. The 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 modules may be located in a storage medium located in the second memory 903, and the second processor 902 reads the information in the second memory 903 and performs the steps of the foregoing methods in combination with its hardware.

In an exemplary embodiment, 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 foregoing methods.

It is to be understood that the memories (the first memory 803 and the second memory 903) of the embodiments of the present application may be volatile memories or nonvolatile memories, and may also include both volatile and nonvolatile memories. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a magnetic random access Memory (Flash Memory), a magnetic surface Memory, an optical Disc, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), synchronous Static Random Access Memory (SSRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), synchronous Dynamic Random Access Memory (SLDRAM), direct Memory (DRmb Access), and Random Access Memory (DRAM). The memories described in the embodiments of the present application are intended to comprise, without being limited to, these and any other suitable types of memory.

In order to implement the method provided by the embodiment of the present application, an embodiment of the present application further provides an information transmission system, as shown in fig. 10, where the system includes: network device 1001 and 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 are not described herein again.

In an exemplary embodiment, the present application further provides a storage medium, specifically a computer-readable storage medium, for example, a first memory 803 storing a computer program, which is executable by the first processor 802 of the terminal 800 to perform the steps of the terminal-side method, and for example, a second memory 903 storing a computer program, which is executable by the second processor 902 of the network device 900 to perform the steps of the network-device-side method. The computer readable storage medium may be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The technical means described in the embodiments of the present application may be arbitrarily combined without conflict.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.

Claims

1. An information transmission method is applied to a terminal, and comprises the following steps:

receiving 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 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.

2. The method of claim 1, further comprising:

3. The method of claim 1, wherein the first information further comprises third information, and the third information indicates a valid time length of the second information;

4. The method of claim 3, further comprising:

5. The method of claim 3, further comprising:

6. The method of claim 1, wherein the first information further comprises fifth information, and wherein the fifth information indicates a carrier index;

7. The method according to claim 1, characterized in that said first information further comprises sixth information indicating an active bandwidth part, BWP, on each of said at least one carrier;

8. The method of claim 1, wherein the first information further comprises seventh information indicating timing of hybrid automatic repeat request acknowledgement (HARQ-ACK) of the DCI;

9. The method of claim 1, wherein the first information further includes eighth information, and the eighth information is a Downlink Assignment Index (DAI);

10. An information transmission method applied to a network device includes:

transmitting DCI to a terminal 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 the PDCCH to be detected.

11. The method of claim 10, wherein the first information further comprises third information, and the third information indicates a valid time length of the second information.

12. The method of claim 11, further comprising:

13. The method of claim 10, wherein the first information further comprises fifth information, and wherein the fifth information indicates a carrier index.

14. The method of claim 10, wherein the first information further comprises sixth information indicating active BWP on each of the at least one carrier.

15. The method of claim 10, wherein the first information further comprises seventh information indicating timing of HARQ-ACK of the DCI.

16. The method of claim 10, wherein the first information further comprises eighth information, and wherein the eighth information is a DAI.

17. An information transmission apparatus, comprising:

a receiving unit configured to receive 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 the PDCCH to be detected.

18. An information transmission apparatus, comprising:

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 at least comprises second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected.

19. A terminal, comprising: a first processor and a first communication interface; wherein,

the first communication interface 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 at least comprises second information; the second information indicates carrier information of at least one carrier of the PDCCH to be detected.

20. A network device, comprising: a second processor and a second communication interface; wherein,

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

21. A terminal, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is adapted to perform the steps of the method of any one of claims 1 to 9 when running the computer program.

22. A network device, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is adapted to perform the steps of the method of any one of claims 10 to 16 when running the computer program.

23. A storage medium having stored thereon a computer program for performing the steps of the method of any one of claims 1 to 9, or for performing the steps of the method of any one of claims 10 to 16, when the computer program is executed by a processor.