CN111436125A - Method, equipment and signaling for sending uplink control information - Google Patents
Method, equipment and signaling for sending uplink control information Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- 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
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- 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
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/04—Wireless resource allocation
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- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
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Abstract
The application discloses a method, equipment and a signaling for sending uplink control information, wherein the method comprises the following steps: receiving configuration information, wherein the configuration information comprises PUCCH starting symbol positions, and the starting symbol positions are more than 1; and continuously monitoring the channel at the starting symbol position, and selecting an idle starting symbol position to transmit the PUCCH. The signaling includes a PUCCH start symbol position. The embodiment of the present application further provides a device, which receives the configuration information, performs continuous monitoring on a channel at the starting symbol position, and selects an idle starting symbol position to send a PUCCH. The embodiment of the present application further provides a device, which sends the configuration information and receives a PUCCH at the start symbol position. According to the scheme, the reliability of PUCCH transmission in the unauthorized frequency band can be improved under the condition that PUCCH transmission opportunities in the unauthorized frequency band caused by other system interference are reduced.
Description
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a method and a device for sending uplink control information.
Background
In order to make multiple technologies coexist, regulatory agencies of various countries adopt a forced listen-before-send technology (L BT) for the use of the unlicensed frequency band, i.e., data transmission can be performed only when it is sensed that the current channel is not occupied, and the problem of this mechanism is that some data cannot be transmitted at a certain position.
According to the use of 5G NR in an unlicensed frequency band, the design of the system needs to support various scenes, and particularly, the system needs to be independently deployed in the unlicensed frequency band. In order to support independent deployment in the unlicensed frequency band, a terminal device (UE) needs to Perform Uplink Control Channel (PUCCH) transmission in the unlicensed frequency band. According to the current standard, the transmission of the PUCCH needs to be configured by the network device (gNB), and then the terminal transmits corresponding uplink control information according to the PUCCH resource configured by the gNB.
According to the current standard, the transmission position of the PUCCH configuration configured by the gNB is fixed, and the data transmission in the unlicensed frequency band needs to meet the requirement of L BT, so that once the indicated time cannot be used for transmitting the PUCCH due to L BT, the data transmission of the UE in the unlicensed frequency band is greatly influenced.
Disclosure of Invention
The application provides an uplink control information sending method, equipment and signaling, and aims to solve the problem that the reliability of sending a PUCCH in an unlicensed frequency band in the prior art is low.
The embodiment of the application provides a method for sending uplink control information, which is used for terminal equipment and comprises the following steps:
receiving configuration information, wherein the configuration information comprises PUCCH starting symbol positions, and the starting symbol positions are more than 1;
and continuously monitoring the channel at the starting symbol position, and selecting an idle starting symbol position to transmit the PUCCH.
Preferably, in the configuration information, at least 1 PUCCH format contains more than 1 starting symbol position.
Preferably, the starting symbol position is expressed in at least one of the following ways:
starting symbol starting position, starting symbol quantity value;
a start symbol start position, a start symbol end position;
discrete start symbol positions.
Preferably, the configuration information further includes a time slot indication. Further, the slot indication is expressed as: the slot number value.
Further preferably, in the method according to the embodiment of the present application, before transmitting the PUCCH, the method further includes the following steps: and receiving PUCCH resource indication information, wherein the resource indication information comprises PUCCH resource configuration parameters. Optionally, the PUCCH resource indication information is included in downlink control signaling or higher layer signaling.
The embodiment of the present application further provides a signaling, which is used in the method according to any embodiment of the present application, and includes the following configuration information: PUCCH start symbol position.
An embodiment of the present application further provides a device, configured to receive the configuration information, perform continuous monitoring on a channel at the starting symbol position, and select an idle starting symbol position to send a PUCCH.
An embodiment of the present application further provides a device, configured to send the configuration information, and receive a PUCCH at the starting symbol position.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
the invention enables the PUCCH resource configuration to support a plurality of PUCCH candidate sending time points by increasing the number of possible starting symbols in the PUCCH sending Format (Format) configuration. And the UE obtains PUCCH resources supporting a plurality of PUCCH candidate transmission time points according to the gNB configuration. And the UE selects one PUCCH to transmit according to the PUCCH resources and the candidate time points. Based on the mode, the PUCCH transmission opportunity can be increased, and the robustness of PUCCH transmission is increased.
By the method and the equipment provided by the invention, the gNB provides multiple PUCCH transmission opportunities for the UE, and the reliability of PUCCH transmission in the unauthorized frequency band can be improved under the condition that the PUCCH transmission opportunities in the unauthorized frequency band caused by other system interference are reduced.
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 embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic diagram of PUCCH resource configuration parameters;
fig. 2 is a schematic diagram of configuration information of a starting symbol position in PUCCH format configuration;
FIG. 3 is a schematic diagram of configuration information including starting symbol starting positions and starting symbol quantity values;
FIG. 4 is a schematic diagram of configuration information including a start symbol start position and a start symbol end position;
FIG. 5 is a schematic diagram of configuration information including discrete start symbol positions;
FIG. 6 is a diagram illustrating configuration information including a slot indication;
fig. 7 is a flowchart of an embodiment of dynamic PUCCH feedback for terminal equipment according to the present invention;
fig. 8 is a flowchart of an embodiment of a dynamic PUCCH feedback for a network device according to the present invention;
fig. 9 is a flowchart of an embodiment of semi-static PUCCH feedback for terminal equipment according to the method of the present invention;
fig. 10 is a flowchart of an embodiment of semi-static PUCCH feedback for network devices according to the method of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
According to the current NR protocol, the basic flow for UE to transmit PUCCH is:
the gNB informs the UE of available PUCCH transmission resources;
the UE determines the PUCCH transmission content, format and transmission position according to the type and size of the transmission information and the PUCCH transmission resource configured by the gNB, and then transmits the PUCCH;
and the gNB performs PUCCH detection and reception at the configured PUCCH resources.
According to the current standard scheme, the gbb informs the UE that the PUCCH transmission resource configuration contains only one transmission time point. Since there is other system coexistence in the unlicensed band, there is a case where the PUCCH cannot be transmitted due to interference at the configured time point.
In order to improve robustness of PUCCH transmission, the invention provides a configuration mode of a PUCCH in an unlicensed frequency band.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of PUCCH resource configuration parameters. According to the current specification of TS38.331, PUCCH transmission needs to be configured according to the gNB, where the specific PUCCH Resource configuration parameter is PUCCH-Resource. The PUCCH-Resource configuration includes configuration index (PUCCH-Resource id), starting frequency position (starting prb), whether frequency hopping is adopted, PUCCH format, and other information (format), and the specific configuration is shown in fig. 1.
Fig. 2 is a schematic diagram of configuration information of a starting symbol position in PUCCH format configuration. The figure includes starting symbol indication (starting symbol index) in different PUCCH format (PUCCH-format 0-4) configurations. Since only one initial transmission symbol is supported in the configuration information shown. If interference of other systems exists, the configured initial sending symbol cannot initiate PUCCH transmission, so that the situation that PUCCH bearing information cannot be fed back is caused.
In the present invention, in a PUCCH resource configuration in which the gNB is the UE, a plurality of start symbol positions are indicated in each PUCCH format (PUCCH-format). And increasing the number of the starting symbols of the candidates, so that the PUCCH resource configuration supports a plurality of PUCCH candidate transmission time points. And the UE selects one transmission according to the PUCCH resources and the candidate transmission time points.
The starting symbol position is expressed in at least one of the following ways:
mode 1: starting symbol starting position, starting symbol quantity value;
mode 2: a start symbol start position, a start symbol end position;
mode 3: discrete start symbol positions.
Mode 4: on the basis of the modes 1-3, the time slot indication is further added.
FIG. 3 is a diagram illustrating configuration information including starting symbol starting positions and starting symbol quantity values. Specifically, mode 1: the starting symbol starting position and the starting symbol number value are used for indicating a plurality of symbol numbers which can be used as starting symbols after the starting symbol. The start symbol number value (startsymbol duration) marked by the bold font identifies a number of consecutive start symbols available after the start symbol start position (startingsymbol index). If startsymbol duration ═ 3 indicates that starting from starting symbol index, the following 3 symbols can also be used as starting symbols of PUCCH.
Fig. 4 is a schematic diagram of configuration information including a start symbol start position and a start symbol end position. Specifically, mode 2: the PUCCH start symbol maximum range is indicated by the start symbol start position. Wherein the starting symbol ending position (endingsymbol index) marked by the bold font is the latest ending symbol of the PUCCH. I.e., symbols between the start symbol start position and the start symbol end position, may all be used for PUCCH transmission. If the endingsymbol index is 10, the representation starts from starting symbol index, and the PUCCH transmission can be performed up to the 10 th symbol.
FIG. 5 is a schematic diagram of configuration information including discrete start symbol positions. Specifically, mode 3: with discrete start symbol positions. And indicating a plurality of PUCCH starting symbols, and identifying each symbol in a bit set mode. For example, the candidate start symbol position index (candidatestartsymbol index) marked by the bold font is a set of a plurality of possible start symbols. For example, 14 bits are used to respectively indicate whether 14 symbols are available as start symbols.
Fig. 6 is a diagram illustrating configuration information including a timeslot indicator. Preferably, the configuration information further includes a time slot indication. Further, the slot indication is expressed as: the slot number value. Specifically, mode 4: multiple possible starting symbol positions are indicated simultaneously, and multiple possible starting time slots are indicated. The indication mode of the plurality of possible starting symbols may be one of the above 3 modes, and the indication of the plurality of starting slots is a single indication. For example, the start symbol position indication is made in mode 1, with the slot indication added. The slot number value (slot duration) in fig. 6 indicates that a number of possible start symbols within a slot number of slots after the slot in which the PUCCH can start transmitting can all be used to start PUCCH transmission.
Fig. 7 is a flowchart of an embodiment of dynamic PUCCH feedback applied to terminal equipment according to the method of the present invention.
The embodiment of the application provides a method for sending uplink control information, which is used for terminal equipment and comprises the following steps:
for example, the UE receives configuration information containing PUCCH-Resource sent by the gNB for the UE to send PUCCH.
For example, the gNB sends multiple PUCCH-Resource sets through RRC signaling of a higher layer, and each PUCCH-Resource set has multiple PUCCH-Resource configurations (e.g., fig. 1). Through the signaling, the UE can obtain a plurality of PUCCH-Resource configurations, each configuration having a plurality of possible starting transmission symbols of PUCCH (e.g., fig. 3 to 6) by the method of the present invention. When 14 symbols are included in every 1 slot, a maximum of 14 starting symbol positions can be defined in the slot.
for example, the UE receives a downlink control channel (PDCCH), and determines slot (slot) information for PUCCH transmission and a specific PUCCH transmission configuration through a PDSCH-to-HARQ-timing-indicator and a PUCCH resource indicator in the PDCCH.
The PDSCH-to-HARQ-timing-indicator is used for indicating the UE to transmit PUCCH in a plurality of time slots after receiving the PDCCH; the PUCCH Resource indicator specifically indicates which PUCCH transmission is specifically adopted in the multiple PUCCH-Resource configuration as in fig. 1. After determining a PUCCH configuration, the UE obtains a PUCCH transmission format and a plurality of candidate locations available for PUCCH transmission according to step 11.
And step 13, continuously monitoring the channel at the starting symbol position, and selecting an idle starting symbol position to transmit the PUCCH.
For example, the UE selects one position for actual PUCCH transmission according to a plurality of transmittable positions. The UE prepares corresponding PUCCH transmission data according to the plurality of PUCCH candidate positions determined in step 12. And in the candidate position, the UE sequentially carries out channel monitoring according to the time sequence. And if the monitoring result is that the channel is not occupied, the PUCCH transmission can be carried out, and then the UE carries out PUCCH transmission. And if the channel monitoring result is that the channel is occupied, not transmitting PUCCH.
For example, when the UE obtains candidate positions of the transmittable PUCCH as symbols 0 to 5 according to the PUCCH-Resource indication, the UE is ready to transmit PUCCH data according to the indicated formats from the symbol 0 to the symbol 5, meanwhile, the UE performs continuous monitoring of the channel (L BT), starting from the symbol 0, once the channel is idle, data transmission can be performed, and the UE performs PUCCH transmission of the corresponding symbol.
Fig. 8 is a flowchart of an embodiment of dynamic PUCCH feedback for network devices according to the present invention.
Corresponding to the embodiment shown in fig. 7, the embodiment of the working process at the network device (gNB) side includes the following steps:
for example, the gNB performs PUCCH related configuration for the UE through higher layer signaling (e.g., RRC signaling), including various PUCCH-Resource configurations;
Fig. 9 is a flowchart of an embodiment of semi-static PUCCH feedback applied to terminal equipment according to the method of the present invention.
The embodiment of the application provides a method for sending uplink control information, which is used for terminal equipment and comprises the following steps:
in step 31, the UE receives a PUCCH transmission configuration containing PUCCH-Resource transmitted by the gNB.
For example, the gNB sends multiple PUCCH-Resource configurations to the UE through RRC signaling of a higher layer. Through the signaling, the UE can obtain a plurality of PUCCH-Resource configurations, and each configuration has a plurality of PUCCH possible initial sending symbols through the method of the invention.
And step 32, receiving PUCCH resource indication information, wherein the resource indication information comprises PUCCH resource configuration parameters, and the PUCCH resource indication information is contained in a high-level signaling.
For example, the UE receives semi-static PUCCH feedback signaling. Such as CSI-ReportConfig. The signaling comprises related information PUCCH-CSI-Resource and CSI-report periodicityAndOffset sent by PUCCH.
Wherein the CSI-report periodicityAndOffset is used for indicating a PUCCH feedback slot position; the PUCCH-CSI-Resource specifically indicates which PUCCH configuration is specifically adopted for PUCCH transmission in a plurality of PUCCH-Resource configurations. After determining a PUCCH configuration, the UE obtains a PUCCH transmission format and a plurality of candidate positions available for PUCCH transmission according to step 31.
It should be noted that if multiple possible slot indications configured in the mode 4 are encountered at this time, the multi-slot PUCCH transmission in the mode 4 is not performed, and the PUCCH transmission is performed only according to the period indicated by the CSI-reportperiodiciandoffset.
And step 33, continuously monitoring the channel at the starting symbol position, and selecting an idle starting symbol position to transmit the PUCCH.
In step 33, the UE selects one position for actual PUCCH transmission based on the plurality of transmittable positions. The UE prepares the corresponding PUCCH transmission data according to the plurality of PUCCH candidate positions determined in step 32. And in the candidate position, the UE monitors the channels in sequence according to the time sequence. And if the monitoring result is that the channel is not occupied, the UE transmits PUCCH. And if the channel monitoring result is that the channel is occupied, not transmitting PUCCH.
Fig. 10 is a flowchart of an embodiment of semi-static PUCCH feedback for network devices according to the method of the present invention. Corresponding to the embodiment shown in fig. 9, the network device embodiment comprises the following steps:
for example, the gbb performs PUCCH related configuration for the UE through higher layer signaling (RRC signaling), including various PUCCH-Resource configurations;
for example, the gNB transmits semi-static configuration information including a PUCCH feedback slot and a configuration indication field;
In order to implement the present application, an embodiment of the present application further provides a signaling, which is used in the method according to any embodiment of the present application, and includes the following configuration information: PUCCH start symbol position.
Preferably, in the configuration information, at least 1 PUCCH format contains more than 1 starting symbol position.
Preferably, the starting symbol position is expressed in at least one of the following ways, for example:
starting symbol starting position, starting symbol quantity value;
a start symbol start position, a start symbol end position;
discrete start symbol positions.
Preferably, the configuration information further includes a time slot indication. Further, the slot indication is expressed as: the slot number value.
The embodiment of the present application further provides a device, configured to implement the method according to any one of the embodiments of the present application, where the device is a terminal device, and configured to receive the configuration information, perform continuous monitoring on a channel at the starting symbol position, and select an idle starting symbol position to send a PUCCH.
An embodiment of the present application further provides a device, configured to implement the method according to any one of the embodiments of the present application, where the device is a network device, and is configured to send the configuration information and receive a PUCCH at the start symbol position.
By using the method and the equipment of the invention, PUCCH related configuration is carried out for the UE through higher layer signaling (such as RRC signaling). Including various PUCCH-Resource configurations. The gNB transmits information (PDCCH or higher layer signaling) including a PUCCH feedback slot and a configuration indication field. And receiving PUCCH information at a plurality of candidate PUCCH transmission points indicated by the PDCCH.
As will be appreciated by one skilled in the art, 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. 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.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. An uplink control information sending method is used for terminal equipment, and is characterized by comprising the following steps:
receiving configuration information, wherein the configuration information comprises PUCCH starting symbol positions, and the starting symbol positions are more than 1;
and continuously monitoring the channel at the starting symbol position, and selecting an idle starting symbol position to transmit the PUCCH.
2. The method of claim 1, wherein at least 1 PUCCH format contains more than 1 starting symbol position in the configuration information.
3. The method of claim 1, wherein the starting symbol position is expressed in at least one of:
starting symbol starting position, starting symbol quantity value;
a start symbol start position, a start symbol end position;
discrete start symbol positions.
4. The method of claim 1, wherein the configuration information further includes a slot indication.
5. The method of claim 4, wherein the slot indication is expressed as: the slot number value.
6. The method according to any of claims 1 to 5, further comprising, before transmitting the PUCCH, the steps of:
and receiving PUCCH resource indication information, wherein the resource indication information comprises PUCCH resource configuration parameters.
7. The method of claim 6, wherein the PUCCH resource indication information is included in downlink control signaling or higher layer signaling.
8. A signaling for the method of any one of claims 1 to 7, characterized by comprising the following configuration information: PUCCH start symbol position.
9. An apparatus configured to perform the method according to any one of claims 1 to 7, wherein the apparatus receives the configuration information, performs continuous listening on a channel at the start symbol position, and selects an idle start symbol position to transmit the PUCCH.
10. An apparatus configured to perform the method according to any one of claims 1 to 7, wherein the apparatus transmits the configuration information and receives the PUCCH at the starting symbol position.
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| CN201910028127.7A CN111436125A (en) | 2019-01-11 | 2019-01-11 | Method, equipment and signaling for sending uplink control information |
| PCT/CN2019/105859 WO2020143245A1 (en) | 2019-01-11 | 2019-09-15 | Method, device, and signaling for transmitting uplink control information |
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| CN201910028127.7A CN111436125A (en) | 2019-01-11 | 2019-01-11 | Method, equipment and signaling for sending uplink control information |
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| WO2024164180A1 (en) * | 2023-02-08 | 2024-08-15 | Apple Inc. | Slot structures and starting symbols for unlicensed spectrum sidelink operations |
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| WO2020143245A1 (en) | 2020-07-16 |
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