CN114374490B - Method, equipment and communication system for sending physical downlink control information - Google Patents
Method, equipment and communication system for sending physical downlink control information Download PDFInfo
- Publication number
- CN114374490B CN114374490B CN202011105076.2A CN202011105076A CN114374490B CN 114374490 B CN114374490 B CN 114374490B CN 202011105076 A CN202011105076 A CN 202011105076A CN 114374490 B CN114374490 B CN 114374490B
- Authority
- CN
- China
- Prior art keywords
- control information
- harq
- time unit
- type
- physical downlink
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
- H04L1/0038—Blind format detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0052—Realisations of complexity reduction techniques, e.g. pipelining or use of look-up tables
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1864—ARQ related signaling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The application discloses a physical downlink control information sending method, wherein a physical downlink control information format comprises a first control information form and a second control information form; the first control information is used for scheduling an HARQ process capable of enabling HARQ-ACK feedback; and the second control information is used for scheduling the HARQ process for enabling the HARQ-ACK feedback. In the wireless frame, the wireless frame comprises a first type time unit and a second type time unit which is positioned outside the first type time unit; the first control information is transmitted in a first type of time unit and the second control information is transmitted in a second type of time unit. The application also includes an apparatus and a communication system implementing the method. The method and the device solve the problems that when two types of processes, namely an HARQ process for enabling HARQ-ACK feedback and an HARQ process for enabling HARQ-ACK feedback exist, terminal equipment needs to detect each PDCCH according to DCI with two lengths respectively when the terminal equipment correctly recognizes the two types of processes, and the work is complex and the efficiency is low.
Description
Technical Field
The present disclosure relates to the field of wireless communications technologies, and in particular, to a method, an apparatus, and a system for sending physical downlink control information.
Background
The HARQ mechanism is used in the NR system to improve the efficiency of data transmission. When uplink and downlink transmission is performed, at the MAC layer, each cell has an HARQ entity, and uplink and downlink are independent. For each downlink HARQ process, the terminal equipment indicates the physical layer to send acknowledgement ACK or non-acknowledgement NACK information according to the decoding result. The ACK and NACK information are collectively referred to as hybrid automatic repeat request acknowledgement information HARQ-ACK. For each uplink HARQ process, the terminal equipment determines the HARQ-ACK feedback state of the data of the same HARQ process number before according to new data indication (NDI, new Data Indicator) in uplink scheduling information sent by the base station. Each HARQ entity comprises a plurality of parallel HARQ processes. If the data receiving end feeds back the NACK state of the HARQ process during transmission to the data sending end, the data sending end can retransmit the HARQ process data to the data receiving end, and the data receiving end writes the HARQ process data into the HARQ buffer area under the condition that the decoding of the HARQ process information fails, waits for a retransmitted data block of the HARQ process, and combines and decodes the data of the retransmitted data block and the data soft information of the HARQ buffer area.
The coverage range of ground-air communication and satellite communication is wider, if the HARQ process merging process based on HARQ-ACK feedback is still adopted in ground-air communication and satellite communication, the air propagation delay fed back by the HARQ-ACK information and the retransmission process of HARQ process data can greatly prolong the delay of service data transmission, and the delay is unacceptable for the requirement of the service data delay. Therefore, in a communication system having a long propagation delay in the air, such as ground-air communication and satellite communication, HARQ-ACK feedback for a part of HARQ processes may be disabled. On the other hand, considering reliability of important data such as system configuration information, the HARQ-ACK feedback of part of HARQ processes needs to be reserved in the system.
In NR system design, a part of fields in Downlink Control Information (DCI) formats for uplink grant and downlink grant are used to determine resource indication of HARQ-ACK feedback in HARQ-ACK feedback process, e.g., indication of time position of HARQ-ACK feedback, physical uplink control channel index, transmission power, etc. For example, a downlink control information format of the downlink grant includes a field for indicating PUCCH resources for feeding back HARQ-ACK, a field for indicating timing difference between PDSCH and HARQ-ACK feedback, and the like.
For HARQ processes that do not enable HARQ-ACK feedback, these fields in the DCI format used to determine the HARQ-ACK feedback resources are meaningless. In the prior art, unified DCI format is used for indicating information of uplink authorization or downlink authorization, whether corresponding HARQ-ACK information needs to be fed back or not, the control information always needs to carry information for determining HARQ-ACK feedback resources, so that the efficiency of the control information is very low, and the overall efficiency of a system is influenced. If different formats are used for DCI for HARQ process that enables HARQ-ACK feedback and for HARQ process that disables HARQ-ACK feedback, the former includes information for determining HARQ-ACK feedback resources and the latter does not include information for determining HARQ-ACK feedback resources, the terminal device has to detect DCI formats of both lengths at the same time, and blind detection is complicated.
Disclosure of Invention
The application provides a method, equipment and a wireless communication system for sending physical downlink control information, which solve the problems that when two types of processes, namely an HARQ process for enabling HARQ-ACK feedback and an HARQ process for enabling HARQ-ACK feedback exist in the system, terminal equipment needs to detect each PDCCH according to DCI with two lengths respectively, and the work is complex and the efficiency is low. The technical scheme is particularly suitable for ground-air communication and satellite communication systems.
In a first aspect, a method for sending physical downlink control information provided in the present application includes the following technical solutions: the format of the physical downlink control information comprises a first control information form and a second control information form; the first control information is used for scheduling an HARQ process capable of enabling HARQ-ACK feedback; and the second control information is used for scheduling the HARQ process for enabling the HARQ-ACK feedback. In the wireless frame, the wireless frame comprises a first type time unit and a second type time unit which is positioned outside the first type time unit; the first control information is transmitted in a first type of time unit and the second control information is transmitted in a second type of time unit.
Preferably, the location of the first type of time units and/or the second type of time units is indicated with configuration information.
Further, the first control information form includes a field for determining HARQ-ACK feedback resource information; the second control information form does not contain a field for determining HARQ-ACK feedback resource information.
Wherein the first control information form comprises at least one of: DCI format 1_0, DCI format 1_1, DCI format 1_2.
The technical solution of the second aspect of the present application is that the method according to any one of the embodiments of the first aspect of the present application is used in a terminal device, and includes the following steps:
the terminal equipment detects the physical downlink control information in a first type time unit in a first control information form, and detects the physical downlink control information in a second type time unit in a second control information form.
Further, before the terminal device detects the physical downlink control information in the form of the first control information and/or the second control information, the method may further include the following steps: and the terminal equipment receives the configuration information and obtains the positions of the first type time units and/or the second type time units.
The technical solution of the third aspect of the present application is that the method according to any one of the embodiments of the first aspect of the present application is used for a network device, and includes the following steps:
the network device uses a first control information form to send the physical downlink control information in a first type time unit, and uses a second control information form to send the physical downlink control information in a second type time unit.
Further, before the network device sends the first control information and/or the second control information, the method may further include the following steps: the network device sends configuration information comprising indication information of the first type time units and/or the second type time units.
In a fourth aspect, an embodiment of the present application proposes a terminal device, configured to implement the method according to any one of the embodiments of the first aspect of the present application, where the terminal device detects the physical downlink control information in a first type of time unit in a first control information form, and detects the physical downlink control information in a second type of time unit in a second control information form.
In a fifth aspect, an embodiment of the present application proposes a network device, configured to implement the method according to any one of the embodiments of the first aspect of the present application, where the network device sends the physical downlink control information in a first type of time unit in the form of first control information, and sends the physical downlink control information in a second type of time unit in the form of second control information.
In a sixth aspect, the present application also proposes a computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any one of the embodiments of the first to third aspects of the present application.
Finally, the present application proposes a mobile communication system comprising at least 1 terminal device as described in the fourth aspect of the present application and at least 1 network device as described in the fifth aspect of the present application.
The above-mentioned at least one technical scheme that this application embodiment adopted can reach following beneficial effect:
in the prior art, a unified Downlink Control Information (DCI) format is used for indicating uplink authorization or downlink authorization information, whether corresponding HARQ-ACK information needs to be fed back or not, the control information always needs to carry information for determining HARQ-ACK feedback resources, so that the efficiency of the control information is very low, and the overall efficiency of a system is influenced. If different formats are used for DCI for HARQ process that enables HARQ-ACK feedback and for HARQ process that disables HARQ-ACK feedback, the former includes information for determining HARQ-ACK feedback resources and the latter does not include information for determining HARQ-ACK feedback resources, the terminal device has to detect DCI formats of both lengths at the same time, and blind detection is complicated.
By adopting the scheme of the invention, the detection time of the Physical Downlink Control Channel (PDCCH) is divided into two types, and the PDCCH needing to enable the HARQ-ACK feedback information is limited to a specific time, so that the requirements of the reliability and the time delay characteristic of the information carried by the PDSCH scheduled by the PDCCH can be met. On the one hand, because the format of the physical downlink control information comprises a first control information form and a second control information form, the difference of the information lengths of the two forms is obvious, and if the terminal equipment detects the information of the two forms at the same time within the target detection time, the complexity of the equipment is increased. In the application, the terminal equipment does not need to detect DCI formats with two lengths at the same time, so that blind detection complexity of the terminal equipment is reduced. On the other hand, the scheduling information of the HARQ process for enabling the HARQ-ACK feedback does not comprise the HARQ-ACK feedback related indication, so that the efficiency of the physical downlink control information is ensured. By flexibly adjusting the configuration proportion and the configuration time of the two times, the service quality of various data types can be ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
fig. 1 is a diagram illustrating PDCCH detection time in the prior art;
FIG. 2 (a) is a flow chart of an embodiment of the method of the present application;
fig. 2 (b) is a schematic diagram of the detection time of the applied physical downlink control information;
FIG. 3 is a flow chart of an embodiment of a method of the present application for a network device;
fig. 4 is a flowchart of an embodiment of the method for a terminal device;
FIG. 5 is a schematic diagram of an embodiment of a network device;
FIG. 6 is a schematic diagram of an embodiment of a terminal device;
fig. 7 is a schematic structural diagram of a network device according to another embodiment of the present invention;
fig. 8 is a block diagram of a terminal device according to another embodiment of the present invention.
Detailed Description
For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The invention provides a method and equipment for sending physical downlink control information, which are mainly used for limiting a HARQ process for enabling HARQ-ACK and/or limiting the scheduling time of the HARQ process for enabling the HARQ-ACK by network equipment under the condition of supporting the feedback for enabling the HARQ-ACK in a system with larger air propagation delay such as ground-air communication or satellite communication and the like, and the method and equipment indicate limiting information to terminal equipment, and the terminal equipment determines the format length of the physical downlink control information detected at a specific time according to the limiting information. In this way, on one hand, the terminal equipment does not need to detect DCI formats with two lengths at the same time, and the blind detection complexity of the terminal equipment is not affected. On the other hand, the scheduling information of the HARQ process for enabling the HARQ-ACK feedback does not comprise the HARQ-ACK feedback related indication, so that the efficiency of the physical downlink control information is ensured. By flexibly adjusting the configuration proportion and the configuration time of the two times, the service quality of various data types can be ensured.
The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a diagram illustrating PDCCH detection time in the prior art.
The search space of the PDCCH can be periodically allocated in the time domainAnd setting, namely, the terminal equipment performs PDCCH blind detection according to the periodic configuration. PDCCH search space in radio frame n f Time slot number in
Satisfy the following requirements
From time slots
Starting with the terminal equipment in succession T s The PDCCH is detected in each slot, at the next k s -T s The PDCCH is not detected for each consecutive slot, where k s 、O s The period and offset slot values configured for the PDCCH search space, respectively. />
Is the number of time slots within a radio frame. T (T) s Is a continuous monitoring slot length configured for the PDCCH search space. μ is a parameter set index of the BWP where PDCCH detection is located. At μ=1 (corresponding subcarrier spacing 30 KHz), k s ＝4、O s ＝1、T s For example, =2, assuming that the control resource set CORESET corresponding to the search space is configured to have a symbol number of 2 and the intra-slot pattern 10001000100000 (1 indicates the position of the CORESET initial symbol in one slot), the PDCCH detection time is shown in the slot shaded in fig. 1.
Fig. 2 (a) is a flow chart of an embodiment of the method of the present application. The embodiment shown in fig. 2 includes the following steps 101 to 103:
Within the radio frame, time units of a first type and time units of a second type that are located outside the first type are included. The time for detecting the PDCCH in the first type time unit and the second type time unit may be, for example, a time slot satisfying the 3GPP TS 38.211 V16.2.0 standard, as shown in fig. 1.
During communication of the terminal device with the network, most of the time downlink transmission is used for transmission of downlink traffic data. The system configuration information is often carried in the PDSCH of the physical downlink shared channel, which is a small part of the downlink information acquired by the terminal device. Moreover, the latency requirements of the system configuration information are generally low. Considering that the HARQ-ACK feedback of the remaining part of HARQ processes in the system is mainly to meet the reliability of important data such as system configuration information, the delay requirement is not high, so that the PDCCH detection time of the downlink control information format is divided into two types, and can be respectively used for the PDCCH for enabling the HARQ-ACK feedback information and the PDCCH for disabling the HARQ-ACK feedback information.
The PDCCHs needing to enable the HARQ-ACK feedback information are limited to a specific time, so that the requirements of reliability and time delay characteristics of information such as system configuration carried by PDSCH scheduled by the PDCCHs can be met.
Both control plane signaling data and data plane signaling data are carried by PDSCH. The system configuration information is typically control plane signaling data, configured to the terminal device by RRC (Radio Resource Control ) signaling or MAC (Media Access Control, medium access control) signaling. The RRC signaling includes RRC common signaling and or RRC dedicated signaling configuration. The service information is typically data plane data of the terminal device.
Preferably, the positions of the first type time units and/or the second type time units may be configured according to the ratio of the system configuration information to the data amount of the data traffic information. If the time length of detecting PDCCH is T 0 The acquired data quantity of the terminal equipment is gamma 0 The data amount of the system configuration information included therein is gamma 1 The service data volume of the terminal equipment is gamma 2 . The first type of time unit has a length of T 1 And a time unit of the second type T 2 Satisfy the following requirements
Or->
The time of the HARQ process for scheduling the enabled HARQ-ACK feedback is not less than a specific threshold value, and the situation that the system configuration information reliability requirement cannot be met due to limiting the HARQ process for scheduling the enabled HARQ-ACK feedback to the first type of time unit is avoided. The period of the first time unit is not more than sigma, so that the delay requirement of the system configuration information can be ensured not to be influenced by the configuration of the first time unit and the second time unit. Where σ represents the maximum scheduling delay that the system configuration information delay requirement can withstand. In meeting->
(or
) And under the condition that the period of the first time unit is not more than sigma, the configuration proportion and the configuration time of the two times can be flexibly adjusted, and the service quality of system configuration information and service data types is ensured.
That is, the physical downlink control information includes both the first control information and the second control information. The functions of the first control information and the second control information may be different, and the forms may be different.
The function of the first control information is used for scheduling an HARQ process capable of enabling HARQ-ACK feedback; and the function of the second control information is used for scheduling the HARQ process for enabling the HARQ-ACK feedback.
The configuration information of one PDCCH search space comprises various downlink control information formats which are blindly detected in the search space by the terminal equipment. Among the HARQ processes received by the terminal device, one part of HARQ processes is HARQ-ACK feedback enabled, and the other part of HARQ processes is HARQ-ACK feedback disabled. If different formats are used for DCI for HARQ process that enables HARQ-ACK feedback and for HARQ process that disables HARQ-ACK feedback, the former includes information for determining HARQ-ACK feedback resources and the latter does not include information for determining HARQ-ACK feedback resources, the terminal device has to detect DCI formats of both lengths at the same time, and blind detection is complicated. The terminal device performs the blind detection process of the PDSCH scheduling indication information by using DCI formats with two lengths at the detection time of each PDCCH, and the blind detection complexity will have to be increased nearly by times.
Thus, further, the form of the first control information includes a field for determining HARQ-ACK feedback resource information; the second control information is in a form of not including a field for determining HARQ-ACK feedback resource information.
For example, the first control information form comprises at least one of: DCI format 1_0, DCI format 1_1, DCI format 1_2. As described in section 7.3 with reference to 3gpp TS 38.212.V16.2.0, the downlink control information formats for scheduling PDSCH include DCI format 1_0, DCI format 1_1, and DCI format 1_2. Assuming that the downlink control information format is DCI format 1_1, referring to section 7.3.1.2.2, DCI format 1_1 includes several fields including a field for determining HARQ-ACK feedback resource information. And determining information of HARQ-ACK feedback resource information such as PUCCH resource indication for feeding back HARQ-ACK, timing difference indication between PDSCH and HARQ-ACK feedback, downlink allocation index (DAI, downlink assignment index), PUCCH transmission power adjustment amount for feeding back HARQ-ACK and the like.
Alternatively, the first control information form is used to determine the physical downlink control information format used in the first type of time unit, and the second control information form is used to determine the physical downlink control information format used in the second type of time unit.
Fig. 2 (b) is a schematic diagram of the detection time of the physical downlink control information applied for.
As shown in fig. 2 (b), for example, after the terminal device acquires the configuration information, it is determined that the format of the downlink control information is detected in the form of the first control information within the target detection time of the detection times of the downlink control information. During these times, the terminal device need not detect the target downlink control information format in accordance with the second control information format. In addition to these times in the PDCCH detection time, the terminal device detects the downlink control information format according to the second control information form, and does not need to detect the downlink control information format according to the first control information form. In this way, the terminal device does not need to detect different forms for the DCI format 2_1, that is, does not need to detect the DCI format according to two lengths, and can avoid the problem of high blind detection complexity of the terminal device.
Fig. 3 is a flowchart of an embodiment of the method for a network device.
When the method is used for the network equipment, the network equipment needs to send the PDCCH which enables the HARQ-ACK feedback information in the first PDCCH detection time and needs to send the PDCCH which disables the HARQ-ACK feedback information in the second PDCCH detection time in the information which is sent to the terminal equipment by the network equipment. In time, the detection time of the PDCCH is divided into two types, and the requirements of reliability and time delay characteristics of information such as system configuration carried by PDSCH scheduled by the PDCCH are met.
The first type of time units and the second type of time units are as defined in step 101.
The network device uses the first control information to control information in the first type time unit and/or uses the second control information to send physical downlink control information in the second type time unit.
The format of the physical downlink control information is a combination of fields carrying the physical downlink control information. The first control information form is used for scheduling an HARQ process capable of enabling HARQ-ACK feedback; and the second control information form is used for scheduling the HARQ process for enabling the HARQ-ACK feedback.
The form of the target downlink control information format for the HARQ process scheduled to enable HARQ-ACK feedback does not include an indication field for determining HARQ-ACK feedback resource information. The means for determining HARQ-ACK feedback resource information comprises any combination of: downlink allocation index, PUCCH resource indication, PDSCH to HARQ-ACK timing, PUCCH transmit power adjustment value, PDSCH packet index.
Fig. 4 is a flowchart of an embodiment of the method for a terminal device.
the first type of time unit is used for scheduling HARQ processes which enable HARQ-ACK feedback; the second type of time unit is used to schedule HARQ processes to enable HARQ-ACK feedback.
For example, in the detection time satisfying the formula (1), a part is defined as a first type time unit and another part is defined as a second type time unit.
The terminal equipment detects the physical downlink control information in a first type time unit in a first control information form, and/or detects the physical downlink control information in a second type time unit in a second control information form.
In step 302, the first control information is used for scheduling HARQ processes that enable HARQ-ACK feedback; the second control information is used to schedule the HARQ process to enable HARQ-ACK feedback.
For example, in the detection time of the downlink control information, the terminal device detects the downlink control information format according to the first control information form in the first type time unit. And the terminal equipment detects the target downlink control information format according to the second control information form at other times except the target detection time.
After the terminal equipment acquires the configuration information, determining to detect a target downlink control information format according to the first control information form in target detection time in the detection time of the downlink control information. During these times, the terminal device need not detect the target downlink control information format in accordance with the second control information format. In addition to these times in the PDCCH detection time, the terminal device detects the target downlink control information format according to the second control information form, and does not need to detect the target downlink control information format according to the first control information form. In this way, the terminal device does not need to detect different formats for the DCI format 2_1, that is, does not need to detect the DCI format according to two lengths, and can avoid the problem of increasing blind detection complexity of the terminal device.
Fig. 5 is a schematic diagram of an embodiment of a network device.
The application also proposes a network device for: transmitting the configuration information, wherein the configuration information is used for indicating the positions of the first type time units and the second type time units; the first control information is sent in a first type of time unit and the second control information is sent in a second type of time unit.
That is, the network device transmits the physical downlink control information in the form of the first control information in the first type of time unit, and transmits the physical downlink control information in the form of the second control information in the second type of time unit.
In order to implement the above technical solution, the network device 400 provided in the present application includes at least one module of a network sending module 401, a network determining module 402, and a network receiving module 403.
The network sending module is used for sending the configuration information and DCI (including first control information and second control information); the PDSCH is retransmitted after receiving the NACK information.
The network determining module is used for determining the positions of the first type time units and the second type time units.
And the network receiving module is used for receiving the ACK/NACK information.
Specific methods for implementing the functions of the network sending module, the network determining module and the network receiving module are described in the embodiments of the methods of the present application, and are not described here again.
The network device includes, but is not limited to, a mobile communication base station device, an airborne device for ground-air communication or a satellite-borne device for satellite communication.
Fig. 6 is a schematic diagram of an embodiment of a terminal device.
The embodiment of the application provides a terminal device, which is used for: receiving the configuration information to obtain the positions of the first type time units and/or the second type time units; the first control information is detected in a first type of time unit and the second control information is detected in a second type of time unit.
That is, the terminal device detects the physical downlink control information in the form of first control information in the first type of time unit, and detects the physical downlink control information in the form of second control information in the second type of time unit.
In order to implement the above technical solution, the terminal device 500 provided in the present application includes at least one module of a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.
The terminal receiving module is used for receiving configuration information, first control information and second control information, detecting the first control information in a first type time unit and detecting the second control information in a second type time unit.
The terminal determining module is used for determining the position of the first type time unit and/or the second type time unit according to the configuration information; and determining an HARQ process for enabling or disabling HARQ-ACK feedback according to the first control information and the second control information.
And the terminal sending module is used for sending the ACK/NACK.
Specific methods for implementing the functions of the terminal sending module, the terminal determining module and the terminal receiving module are described in the embodiments of the methods of the present application, and are not described herein.
The terminal equipment can refer to ground-air communication ground equipment, satellite communication ground equipment, mobile communication personal terminal equipment and the like; the ground equipment for ground air communication or satellite communication can be mobile terminal equipment or fixed equipment.
Fig. 7 is a schematic structural diagram of a network device according to another embodiment of the present invention. As shown, the network device 600 includes a processor 601, a wireless interface 602, and a memory 603. Wherein the wireless interface may be a plurality of components, i.e. comprising a transmitter and a receiver, providing a means for communicating with various other apparatuses over a transmission medium. The wireless interface performs the communication function with the terminal device, and processes wireless signals through the receiving and transmitting device, and data carried by the signals are communicated with the memory or the processor through the internal bus structure. The memory 603 contains a computer program for executing any of the embodiments of the present application, which computer program runs or changes on the processor 601. When the memory, processor, wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described here again.
Fig. 8 is a block diagram of a terminal device according to another embodiment of the present invention. The terminal device 700 comprises at least one processor 701, a memory 702, a user interface 703 and at least one network interface 704. The various components in terminal device 700 are coupled together by a bus system. Bus systems are used to enable connected communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.
The user interface 703 may include a display, keyboard, or pointing device, such as a mouse, trackball, touch pad, or touch screen, among others.
The memory 702 stores executable modules or data structures. The memory may store an operating system and application programs. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, etc. for implementing various application services.
In an embodiment of the present invention, the memory 702 contains a computer program that executes any of the embodiments of the present application, the computer program running or changing on the processor 701.
The memory 702 contains a computer readable storage medium, and the processor 701 reads the information in the memory 702 and performs the steps of the above method in combination with its hardware. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 701, implements the steps of the method embodiments as described in any of the embodiments above.
The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the methods of the present application may be performed by integrated logic circuitry in hardware or instructions in software in processor 701. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In one typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and memory.
Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Accordingly, the present application also proposes a computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of the embodiments of the present application. For example, the memory 603, 702 of the present invention may include non-volatile memory in a computer-readable medium, random Access Memory (RAM) and/or non-volatile memory, etc., such as read-only memory (ROM) or flash RAM.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
Based on the embodiments of fig. 5-8, the present application also proposes a communication system comprising at least 1 embodiment of any one of the terminal devices of the present application and/or at least 1 embodiment of any one of the network devices of the present application. The communication system described in the present application may be a terrestrial mobile communication system or a satellite communication system, which is not particularly limited herein.
It should also be noted that the first and second of the present application are different features for distinguishing the same term, for example, the first type of time unit, the second type of time unit, the first control information, the second control information, which contain the meanings defined by the present application document and distinguishing the order or the magnitude.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (14)
1. A physical downlink control information transmitting method is characterized in that,
the format of the physical downlink control information comprises a first control information form and a second control information form; scheduling an HARQ process enabling HARQ-ACK feedback with the first control information; scheduling a HARQ process to enable HARQ-ACK feedback with the second control information; the form of the first control information comprises a field for determining HARQ-ACK feedback resource information; the form of the second control information does not contain a field for determining HARQ-ACK feedback resource information;
in the wireless frame, the wireless frame comprises a first type time unit and a second type time unit which is positioned outside the first type time unit; the first control information is transmitted in a first type of time unit and the second control information is transmitted in a second type of time unit.
2. The method of claim 1, wherein,
the location of the time units of the first type and/or the second type is indicated with configuration information.
3. The method of claim 1, wherein,
the first control information form contains a field for determining HARQ-ACK feedback resource information.
4. The method of claim 1, wherein,
the second control information form does not contain a field for determining HARQ-ACK feedback resource information.
5. The method of claim 3, wherein,
the field for determining HARQ-ACK feedback resource information includes at least one of:
the PUCCH resource of the feedback HARQ-ACK, the timing difference indication between the PDSCH and the feedback of the HARQ-ACK, the downlink allocation index and the PUCCH transmission power adjustment quantity of the feedback HARQ-ACK.
6. The method of claim 1, wherein,
the first control information form comprises at least one of:
DCI format 1_0, DCI format 1_1, DCI format 1_2.
7. A method according to any one of claims 1 to 6, for a terminal device,
the terminal equipment detects the physical downlink control information in a first type time unit in a first control information form, and detects the physical downlink control information in a second type time unit in a second control information form.
8. The method of claim 7, wherein,
and the terminal equipment receives the configuration information and obtains the positions of the first type time units and/or the second type time units.
9. A method according to any one of claims 1 to 6, for use in a network device,
the network device uses a first control information form to send physical downlink control information in a first type time unit, and uses a second control information form to send physical downlink control information in a second type time unit.
10. The method of claim 9, wherein,
the network device sends configuration information comprising indication information of the first type time units and/or the second type time units.
11. A terminal device, using the method of any one of claim 1 to 6, characterized in that,
the terminal equipment detects the physical downlink control information in a first type time unit in a first control information form, and detects the physical downlink control information in a second type time unit in a second control information form.
12. A network device, as claimed in any one of claims 1 to 6, characterized in that,
the network device uses a first control information form to send physical downlink control information in a first type time unit, and uses a second control information form to send physical downlink control information in a second type time unit.
13. A computer readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1-10.
14. A communication system comprising at least 1 terminal device according to claim 11 and at least 1 network device according to claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011105076.2A CN114374490B (en) | 2020-10-15 | 2020-10-15 | Method, equipment and communication system for sending physical downlink control information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011105076.2A CN114374490B (en) | 2020-10-15 | 2020-10-15 | Method, equipment and communication system for sending physical downlink control information |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114374490A CN114374490A (en) | 2022-04-19 |
| CN114374490B true CN114374490B (en) | 2023-07-11 |
Family
ID=81137937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011105076.2A Active CN114374490B (en) | 2020-10-15 | 2020-10-15 | Method, equipment and communication system for sending physical downlink control information |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114374490B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024031721A1 (en) * | 2022-08-12 | 2024-02-15 | 北京小米移动软件有限公司 | Method for detecting scheduling signaling, and apparatus |
| WO2024055319A1 (en) * | 2022-09-16 | 2024-03-21 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device, and network device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2014202317A1 (en) * | 2009-10-19 | 2014-05-22 | Samsung Electronics Co., Ltd. | Transmission diversity and multiplexing for HARQ-ACK signals in communication systems |
| WO2015039416A1 (en) * | 2013-09-18 | 2015-03-26 | 华为技术有限公司 | Method, user equipment, and base station for transmission of hybrid automatic repeat request-acknowledgement |
| CN106559187A (en) * | 2015-09-25 | 2017-04-05 | 北京三星通信技术研究有限公司 | The feedback and method of reseptance of HARQ-ACK information and equipment |
| WO2018172896A1 (en) * | 2017-03-24 | 2018-09-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Uplink harq-ack feedback for mtc |
| CN110278062A (en) * | 2018-03-14 | 2019-09-24 | 电信科学技术研究院有限公司 | Resource instruction determines method and device |
| CN110519021A (en) * | 2019-08-16 | 2019-11-29 | 中国信息通信研究院 | A kind of release semi-persistent scheduling hybrid automatic repeat-request feedback method and equipment |
| CN111277372A (en) * | 2017-06-09 | 2020-06-12 | Oppo广东移动通信有限公司 | Wireless communication method and apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2777399C (en) * | 2009-10-19 | 2015-04-07 | Samsung Electronics Co., Ltd. | Transmission diversity and multiplexing for harq-ack signals in communication systems |
-
2020
- 2020-10-15 CN CN202011105076.2A patent/CN114374490B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2014202317A1 (en) * | 2009-10-19 | 2014-05-22 | Samsung Electronics Co., Ltd. | Transmission diversity and multiplexing for HARQ-ACK signals in communication systems |
| WO2015039416A1 (en) * | 2013-09-18 | 2015-03-26 | 华为技术有限公司 | Method, user equipment, and base station for transmission of hybrid automatic repeat request-acknowledgement |
| CN105556884A (en) * | 2013-09-18 | 2016-05-04 | 华为技术有限公司 | Method, user equipment, and base station for transmission of hybrid automatic repeat request-acknowledgement |
| CN106559187A (en) * | 2015-09-25 | 2017-04-05 | 北京三星通信技术研究有限公司 | The feedback and method of reseptance of HARQ-ACK information and equipment |
| WO2018172896A1 (en) * | 2017-03-24 | 2018-09-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Uplink harq-ack feedback for mtc |
| CN111277372A (en) * | 2017-06-09 | 2020-06-12 | Oppo广东移动通信有限公司 | Wireless communication method and apparatus |
| CN110278062A (en) * | 2018-03-14 | 2019-09-24 | 电信科学技术研究院有限公司 | Resource instruction determines method and device |
| CN110519021A (en) * | 2019-08-16 | 2019-11-29 | 中国信息通信研究院 | A kind of release semi-persistent scheduling hybrid automatic repeat-request feedback method and equipment |
Non-Patent Citations (6)
| Title |
|---|
| Achieving Ultra-Reliable Low-Latency Communications: Challenges and Envisioned System Enhancements;Guillermo Pocovi等;《IEEE Network ( Volume: 32, Issue: 2, March-April 2018)》;全文 * |
| LTE-A终端HARQ机制的实现与测试;张涵嫣等;《广东通信技术》;全文 * |
| R1-1813327 Enhancements to Processing timeline for URLLC;NTT DOCOMO等;《3GPP TSG RAN WG1 Meeting #95》;全文 * |
| R1-1910047：HARQ enhancement in NR unlicensed;Huawei等;《3GPP TSG RAN WG1 Meeting #98bis》;全文 * |
| R1-1910642 - Intel - HARQ for NR-U;Intel Corporation;《3GPP TSG RAN WG1 Meeting #98bis》;全文 * |
| R1-1912844 Remaining Issues on Multi-TRP Transmission Enhancements;ATT;《3GPP TSG RAN WG1 #99》;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114374490A (en) | 2022-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11469857B2 (en) | Method and apparatus for transmitting and receiving a feedback signal in a wireless communication system | |
| CN105743619B (en) | Method and apparatus for hybrid automatic repeat request (HARQ) transmission | |
| RU2754679C2 (en) | System, device and method for data transmission | |
| US10587370B2 (en) | Method and apparatus for performing hybrid automatic repeat request processes | |
| WO2018176226A1 (en) | Harq feedback method, apparatus, and system | |
| EP3101982A1 (en) | Base station, transmission method, mobile station, and retransmission control method | |
| US20090175232A1 (en) | Joint Coding of Multiple TTI Information and Quality Indication Requests | |
| RU2710991C1 (en) | Radio network node, wireless communication device and methods implemented therein | |
| CN111727649A (en) | Method and apparatus for transmitting or receiving data and control information in wireless communication system | |
| KR20220071198A (en) | Transmission method and device | |
| CN112910610B (en) | Hybrid automatic repeat request response method and device | |
| US10523374B2 (en) | Repetition process cycling for grant-less or grant-based transmission | |
| CN112911713B (en) | Configuration method and device of uplink control channel | |
| US20210306957A1 (en) | Method and apparatus for uplink power control in wireless cellular communication system | |
| US20220272557A1 (en) | Systems and methods for determining information indicative of cancelation | |
| CN114374490B (en) | Method, equipment and communication system for sending physical downlink control information | |
| US20230362973A1 (en) | Communication Method and Communication Apparatus | |
| CA3126308A1 (en) | Control information sending method and receiving method, terminal, and network side device | |
| CN110710147A (en) | Physical Uplink Control Channel (PUCCH) format adaptation for generation 5 (5G) New Radio (NR) | |
| Lee et al. | Physical layer enhancements for ultra-reliable low-latency communications in 5G new radio systems | |
| US20200287671A1 (en) | Block-ifdma multiplexing scheme with flexible payload | |
| US20230084145A1 (en) | Communication method and apparatus | |
| CN117751539A (en) | Method, communication device and infrastructure equipment | |
| US9768936B2 (en) | Message transmission in an unlicensed spectrum | |
| CN114070481B (en) | Physical channel transmission method and equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |