CN111436124B - Uplink control method and signaling device for multipoint transmission - Google Patents
Uplink control method and signaling device for multipoint transmission Download PDFInfo
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- CN111436124B CN111436124B CN201910028065.XA CN201910028065A CN111436124B CN 111436124 B CN111436124 B CN 111436124B CN 201910028065 A CN201910028065 A CN 201910028065A CN 111436124 B CN111436124 B CN 111436124B
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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
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
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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
- H04L1/0026—Transmission of channel quality indication
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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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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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
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The application discloses an uplink control method and a signaling device for multipoint transmission. To increase the reliability of the upstream control information, downstream control signaling and MAC CEs are added to indicate the beam direction of each upstream transmission point. And optimizing RI and CQI information of uplink feedback according to the characteristics of multipoint transmission. According to the scheme, the reliability of the uplink control channel of the multipoint transmission is guaranteed.
Description
Technical Field
The present disclosure relates to the field of mobile communications technologies, and in particular, to an uplink control method and a signaling device for multicast transmission.
Background
The 5G NR system supports a multi-beam transmission mechanism, and the R16 version further enhances multi-panel transmission to further enhance reliability and robustness, and supports joint transmission.
When multiple panels are transmitted in a combined mode, a downlink control channel needs to be enhanced so as to be capable of scheduling multiple panels and multiple transmitting points simultaneously, one mode is to schedule multiple points and multiple panels through a unified control channel, and the mode uses one control signaling to indicate scheduling information, HARQ information, precoding information and the like of the multiple points, so that the downlink control channel in the prior art needs to be improved.
Disclosure of Invention
The application provides an uplink control method and a signaling device for multipoint transmission, which solve the problem of how to allocate uplink resources when a plurality of uplink antennas or multiple panels are used.
The embodiment of the application provides an uplink control method for multipoint transmission, which is used for terminal equipment and comprises the following steps:
the terminal equipment receives control information, wherein the control information comprises a transmission point identifier (TRP ID) and information representing the beam direction of uplink control resources of each transmission point;
the terminal device transmits uplink control signaling in the transmission point (TRP) and the beam direction.
Preferably, the number of bits of the control information is 2 bits.
Further, the method of the present application comprises the steps of:
the terminal equipment receives the downlink control signaling, and the downlink control signaling also comprises information representing resources occupied by the uplink control signaling.
Preferably, the terminal device sends the uplink control signaling at a plurality of sending points, and any two sending points have different resources for sending the uplink control signaling.
Further, in order to implement uplink feedback, the method of the present application further includes the following steps:
the uplink control signaling contains RI, which is used for representing the layer number corresponding to the sending point; and or, the uplink control signaling contains CQI corresponding to each sending point.
The embodiment of the application also provides a signaling device for multi-point transmission, which is transmitted to the terminal equipment by the network equipment, wherein the signaling device comprises a transmission point identifier and information representing the direction of a transmission point beam.
Preferably, the signaling comprises MAC CE signaling.
Preferably, the signaling comprises RRC signaling.
Preferably, the signaling comprises physical layer downlink control signaling.
The above-mentioned at least one technical scheme that this application embodiment adopted can reach following beneficial effect:
the patent adds new downlink control signaling and MAC CE design, ensures the reliability of uplink control channels of multipoint transmission, and optimizes RI and CQI design according to the characteristics of the multipoint transmission.
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 flowchart of an embodiment of an uplink control method in the present application;
fig. 2 is a schematic diagram of an embodiment of uplink signaling.
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.
This patent discusses that in order to increase the reliability of uplink control information, downlink control signaling and MAC CE are added to indicate the beam direction of each uplink transmission point when the multipoint downlink transmission is performed. And optimizing RI and CQI information of uplink feedback according to the characteristics of multipoint transmission.
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 flowchart of an embodiment of an uplink control method in the present application. The embodiment of the application provides an uplink control method for multipoint transmission, which is used for terminal equipment and comprises the following steps of 10-30:
step 10, the terminal equipment receives control information, wherein the control information comprises a transmission point identifier (TRP ID) and information representing the beam direction of uplink control resources of each transmission point;
further, the method comprises the following steps 10A-B:
step 10A, the terminal equipment receives control information, wherein the control information comprises a sending point identifier;
it should be noted that, in the prior art, the indication of the spatial related information of the uplink control information is that the available beam is indicated through RRC signaling, and then the beam information corresponding to each uplink resource is activated through MAC CE. When the technology is applied to the transmission of the multipoint uplink control information, since only one uplink transmission point transmits, the beam information corresponding to each resource can be indicated and is the resource of the transmission point. If it extends to a plurality of uplink transmission points, each uplink transmission resource corresponding to each transmission point is required. Therefore, in this embodiment, the identification information of the uplink transmission point is introduced to indicate the transmission point corresponding to the transmission beam.
The number of uplink transmission points is configurable, and the physical maximum number depends on the number of transmission antennas of the terminal device and the number of panels, for example, 2, 4, 6, 8, … …. When using a transmission point identification, it is also limited to the number of bits of the identification, for example, up to 4 are supported.
Step 10B, the terminal device receives MAC CE information, and indicates a transmission beam direction of an uplink control resource of each transmission point;
and transmitting the beam indication information through the MAC CE, and activating the transmission beam direction of each PUCCH resource.
For example, to support multiple uplink panels (panels), each panel transmits a different beam direction, the downlink control signaling adds a panel ID, so that the transmission beam transmission directions of different panels are different.
Or adding a panel ID to the IE activated by the MAC CE to directly indicate the beam direction of the PUCCH resources of each panel.
To distinguish different beam information of different transmission points, physical layer control signaling and MAC layer control signaling designs are considered.
Preferably, the number of bits of the control information is 2 bits. Further preferably, the number of bits of the beam indication information for implementing the multicast is 2 bits.
The information included in RRC signaling, MAC CE signaling, and physical layer control signaling is referred to as "control information" in the present application.
Further, the present embodiment may further include the steps of:
step 10C, the terminal equipment receives a downlink control signaling, wherein the downlink control signaling also contains information representing resources occupied by the uplink control signaling;
step 20, the terminal equipment sends uplink control signaling in the sending point and the beam direction;
preferably, the terminal device sends the uplink control signaling at a plurality of sending points, and any two sending points have different resources for sending the uplink control signaling. To ensure the reliability of the uplink control information, it is transmitted over multiple uplink antennas/panels.
Diversity characteristics are obtained by different resources of PUCCHs transmitted by a plurality of uplink antennas/panels. Uplink Control Channel (PUCCH) repetition of multiple TRPs, different PUCCH repetition being required to support different spatial correlation information. Further studies how to instruct to configure this spatial related information for HARQ-ACK transmission to each TRP.
Further, in order to implement uplink feedback, the method of the present application further includes the following steps:
step 30, the uplink control signaling includes RI, which is used for representing the layer number corresponding to the sending point; and or, the uplink control signaling contains CQI corresponding to each sending point.
The RI of the multicast is extended to indicate the number of layers transmitted by different points. In the multipoint transmission, when different transmission points transmit different layers, the terminal reports the rank number of each transmission point.
For example, when downlink is transmitted by up to 4 layers, the terminal increases information to indicate the rank number of selecting two TRPs, and the number of streams that can be selected is (1, 1), (2, 1), (1, 2), (2, 2), (3, 1), (1, 3).
In the multipoint transmission, CQI information corresponding to several hypotheses is transmitted according to the number of transmission points and the transmission order of the downlink control information. For example, when the number of transmission points is 2, CQI information of the first TRP1, CQI information of the second TRP, CQI information transmitted simultaneously by the first TRP1 and the TRP2 are sequentially transmitted.
Fig. 2 is a schematic diagram of an embodiment of uplink signaling.
The embodiment of the application also provides a signaling for multi-point transmission, which is transmitted to the terminal equipment by the network equipment, wherein the signaling contains the transmission point identification and the information representing the direction of the transmission point wave beam.
Preferably, the signaling includes RRC signaling or MAC CE signaling. The available beams are indicated through the RRC signaling, and then the beam information corresponding to each uplink resource is activated through the MAC CE.
In order to distinguish the beam information of different sending points, one embodiment is to add multi-point sending beam indication information in the physical layer control signaling, and the multi-point sending beam indication information and ARI information in the downlink control signaling indicate uplink control resources sent by the terminal and the beam directions of the sending points together.
Another embodiment is MAC CE control signaling, adding a transmission point identifier and a corresponding beam indication based on the existing MAC CE. Specifically designed as Oct 3 in fig. 2 contains TRP ID; oct 4 contains information indicating the beam direction.
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.
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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 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 (6)
1. An uplink control method for multipoint transmission, which is used for a terminal device, is characterized by comprising the following steps:
the terminal equipment receives control information, wherein the control information comprises a transmission point identifier TRP ID and information representing the beam direction of uplink control resources of each transmission point TRP; the control information is information contained in RRC signaling, MAC CE signaling or physical layer control signaling;
the terminal equipment receives a downlink control signaling, wherein the downlink control signaling comprises information representing resources occupied by an uplink control signaling;
the terminal equipment sends uplink control signaling at a plurality of sending points, and any two sending points are different in resources for sending the uplink control signaling;
the uplink control signaling contains RI, which is used for representing the layer number corresponding to the sending point, when different sending points send different layers, the terminal reports the rank number of each sending point;
the uplink control signaling contains CQI corresponding to each transmitting point, and CQI information of TRPs is sequentially transmitted according to the transmitting point number and the transmitting sequence in the downlink control information.
2. The uplink control method according to claim 1, wherein,
the number of bits of the control information is 2 bits.
3. Signalling means for implementing the uplink control method according to claim 1 or 2, signalling being sent by the network device to the terminal device, characterized in that,
the signaling includes a transmission point identifier and information indicating the direction of a transmission point beam.
4. The signaling apparatus of claim 3 wherein the signaling comprises MAC CE signaling.
5. The signaling apparatus of claim 3 wherein the signaling comprises RRC signaling.
6. The signaling apparatus of claim 3 wherein the signaling comprises physical layer downlink control signaling.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910028065.XA CN111436124B (en) | 2019-01-11 | 2019-01-11 | Uplink control method and signaling device for multipoint transmission |
| PCT/CN2020/071581 WO2020143810A1 (en) | 2019-01-11 | 2020-01-11 | Uplink control method and signaling for multi-point transmission |
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| CN201910028065.XA CN111436124B (en) | 2019-01-11 | 2019-01-11 | Uplink control method and signaling device for multipoint transmission |
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| CN111436124B true CN111436124B (en) | 2023-08-08 |
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| WO2018059270A1 (en) * | 2016-09-28 | 2018-04-05 | 华为技术有限公司 | Uplink control signal transmission method, network side device and terminal device |
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| CN108092697A (en) * | 2017-05-11 | 2018-05-29 | 中兴通讯股份有限公司 | The transmission method and device of signal |
| WO2018141246A1 (en) * | 2017-02-03 | 2018-08-09 | Huawei Technologies Co., Ltd. | Downlink control information for network coordination schemes |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018084331A1 (en) * | 2016-11-02 | 2018-05-11 | 엘지전자 주식회사 | Method for transmitting rrc connection request, and terminal therefor |
| CN108023722B (en) * | 2016-11-04 | 2022-11-11 | 中兴通讯股份有限公司 | Method and device for sending control channel |
| US10433312B2 (en) * | 2017-02-05 | 2019-10-01 | Lg Electronics Inc. | Method of performing uplink transmission in wireless communication system and apparatus therefor |
| EP4336743A2 (en) * | 2017-03-23 | 2024-03-13 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting data in wireless communication system |
| CN108111267B (en) * | 2017-05-05 | 2022-05-20 | 中兴通讯股份有限公司 | Signal transmission method and system and control information sending method and device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018059270A1 (en) * | 2016-09-28 | 2018-04-05 | 华为技术有限公司 | Uplink control signal transmission method, network side device and terminal device |
| WO2018084663A1 (en) * | 2016-11-06 | 2018-05-11 | Lg Electronics Inc. | Method and user equipment for transmitting random access signals, and method and base station for receiving random access signals |
| WO2018141246A1 (en) * | 2017-02-03 | 2018-08-09 | Huawei Technologies Co., Ltd. | Downlink control information for network coordination schemes |
| CN108092697A (en) * | 2017-05-11 | 2018-05-29 | 中兴通讯股份有限公司 | The transmission method and device of signal |
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| CN111436124A (en) | 2020-07-21 |
| WO2020143810A1 (en) | 2020-07-16 |
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