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KR-102962635-B1 - Channel transmission and reception method using a guard band within a single carrier in a wireless communication system and device for the same

KR102962635B1KR 102962635 B1KR102962635 B1KR 102962635B1KR-102962635-B1

Abstract

A method for receiving a downlink channel in a wireless communication system, wherein the method performed by a terminal comprises: receiving first information related to a guard band within a first resource area located within a carrier from a base station; receiving second information related to a plurality of resource sets within the first resource area distinguished by the guard band based on the first information within the first resource area from the base station; and receiving a downlink channel from the base station on a resource where the second information indicates that the downlink channel reception is possible.

Inventors

  • 노민석
  • 최경준
  • 곽진삼

Assignees

  • 주식회사 윌러스표준기술연구소

Dates

Publication Date
20260508
Application Date
20201109
Priority Date
20191107

Claims (20)

  1. In a wireless communication system, the terminal is, Transmitter/Receiver; It includes a processor that controls the above-mentioned transceiver, and The above processor is, Receive information related to at least one of a guard band for uplink channel transmission and a guard band for downlink channel reception, and Receive downlink control information (DCI) including a bitmap, and Each bit of the above bitmap indicates whether each of one or more first subbands is available for downlink channel reception, and Receive a downlink channel on the first resource, and The first resource comprises at least one subband among the one or more first subbands indicated by the bitmap as available for reception of the downlink channel, and the first resource does not include a resource for a first guard band allocated based on the information. Transmitting an uplink channel over a second resource, and The terminal, wherein the second resource comprises one or more second sub-bands and a resource for a second guard band allocated based on the information.
  2. In Article 1, The guard band assigned based on the above information is a terminal located between adjacent subbands within the frequency domain.
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  4. In Article 1, The above DCI is a terminal that is a group common (GC) DCI.
  5. In Article 1, The above information is transmitted via RRC (radio resource control) to a terminal.
  6. In Article 1, Each of the above one or more first subbands is a terminal, which is a unit for channel access in an unlicensed band.
  7. In Article 1, Each of the above one or more second subbands is a terminal, which is a unit for channel access in an unlicensed band.
  8. In a wireless communication system, the method performed by the terminal is, A step of receiving information related to at least one of a guard band for uplink channel transmission and a guard band for downlink channel reception; A step of receiving downlink control information (DCI) including a bitmap, Each bit of the above bitmap indicates whether each of one or more first subbands is available for downlink channel reception; Step of receiving a downlink channel on the first resource, The first resource comprises at least one subband among the one or more first subbands indicated by the bitmap as available for reception of the downlink channel, and the first resource does not include a resource for a first guard band allocated based on the information; and It includes the step of transmitting an uplink channel over a second resource, and A method in which the second resource comprises one or more second sub-bands and a resource for a second guard band allocated based on the information.
  9. In Paragraph 8, A method in which a guard band allocated based on the above information is located between adjacent subbands within a frequency domain.
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  11. In Paragraph 8, The above DCI is a group common (GC) DCI, a method.
  12. In Paragraph 8, The above information is transmitted via RRC (radio resource control), a method.
  13. In Paragraph 8, A method in which each of the above one or more first subbands is a unit for channel access in an unlicensed band.
  14. In Paragraph 8, A method in which each of the above one or more second subbands is a unit for channel access in an unlicensed band.
  15. In a wireless communication system, a base station is, Transmitter/Receiver; It includes a processor that controls the above-mentioned transceiver, and The above processor is, Transmit information related to at least one of a guard band for receiving an uplink channel and a guard band for transmitting a downlink channel, and Transmit downlink control information (DCI) including a bitmap, and Each bit of the above bitmap indicates whether each of one or more first subbands is available for downlink channel transmission, and Transmitting a downlink channel over the first resource, and The first resource comprises at least one subband among the one or more first subbands indicated by the bitmap as available for transmission of the downlink channel, and the first resource does not include a resource for a first guard band allocated based on the information, Receive an uplink channel on a second resource, and The above second resource comprises a base station, wherein the second resource includes one or more second sub-bands and a resource for a second guard band allocated based on the information.
  16. In a wireless communication system, the method performed by a base station is, A step of transmitting information related to at least one of a guard band for uplink channel transmission and a guard band for downlink channel reception; A step of transmitting downlink control information (DCI) including a bitmap, Each bit of the above bitmap indicates whether each of one or more first subbands is available for downlink reception; A step of transmitting a downlink channel over a first resource, The first resource comprises at least one subband among the one or more first subbands indicated by the bitmap as available for transmission of the downlink channel, and the first resource does not include a resource for a first guard band allocated based on the information; and It includes the step of receiving an uplink channel on a second resource, and A method in which the second resource comprises one or more second sub-bands and a resource for a second guard band allocated based on the information.
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Description

Channel transmission and reception method using a guard band within a single carrier in a wireless communication system and device for the same This specification relates to a wireless communication system, and more specifically to a channel transmission and reception method using a guard band within a single carrier and an apparatus for the same. Since the commercialization of 4G (4th generation) communication systems, efforts have been made to develop new 5G (5th generation) communication systems to meet the increasing demand for wireless data traffic. 5G communication systems are referred to as beyond 4G network communication systems, post-LTE systems, or NR (new radio) systems. To achieve high data transmission rates, 5G communication systems include systems operating in the mmWave band above 6 GHz, and implementations at base stations and terminals are being considered to include communication systems operating in the frequency band below 6 GHz in order to secure coverage. 3GPP (3rd generation partnership project) NR systems improve network spectrum efficiency, enabling telecommunications operators to provide more data and voice services within a given bandwidth. Therefore, 3GPP NR systems are designed to meet the demands for high-speed data and media transmission in addition to supporting high-volume voice. The advantages of NR systems include high throughput, low latency, support for FDD (frequency division duplex) and TDD (time division duplex), an enhanced end-user experience, and low operating costs due to a simple architecture, all within the same platform. For more efficient data processing, dynamic TDD in NR systems may use a method that varies the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols available for uplink and downlink based on the direction of data traffic from cell users. For example, when a cell's downlink traffic is greater than its uplink traffic, the base station may allocate multiple downlink OFDM symbols to a slot (or subframe). Information regarding the slot configuration must be transmitted to the terminals. In order to mitigate path loss of radio waves in the ultra-high frequency band and increase the transmission distance of radio waves, beamforming, massive array multiple input/output (massive MIMO), full-dimensional multiple input/output (full-dimensional MIMO, FD-MIMO), array antenna, analog beamforming, hybrid beamforming combining analog beamforming and digital beamforming, and large-scale antenna technologies are being discussed in 5G communication systems. In addition, to improve the network of the system, technology development is underway in 5G communication systems regarding advanced small cells, advanced small cells, cloud radio access networks (cloud RAN), ultra-dense networks, device-to-device communication (D2D), vehicle-to-everything communication (V2X), wireless backhaul, non-terrestrial network communication (NTN), moving networks, cooperative communication, CoMP (coordinated multi-points), and interference cancellation. In addition, advanced coding modulation (ACM) methods such as FQAM (hybrid FSK and QAM modulation) and SWSC (sliding window superposition coding), as well as advanced access technologies such as FBMC (filter bank multi-carrier), NOMA (non-orthogonal multiple access), and SCMA (sparse code multiple access) are being developed in 5G systems. Meanwhile, the Internet is evolving from a human-centric network where humans generate and consume information into an IoT (Internet of Things) network that exchanges and processes information among distributed components, such as objects. IoE (Internet of Everything) technology, which combines IoT with big data processing techniques via connections with cloud servers, is also emerging. To implement IoT, technological elements such as sensing technology, wired and wireless communication and network infrastructure, service interface technology, and security technology are required; consequently, technologies such as sensor networks for connecting objects, machine-to-machine (M2M) communication, and machine-type communication (MTC) are currently being researched. In an IoT environment, intelligent IT services that create new value for human life by collecting and analyzing data generated from connected objects can be provided. Through the convergence and integration of existing IT technologies with various industries, IoT can be applied to fields such as smart homes, smart buildings, smart cities, smart or connected cars, smart grids, healthcare, smart home appliances, and advanced medical services. Accordingly, various attempts are being made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks, machine-to-machine (M2M) communication, and machine-type communication (MTC) are being implemented using 5G communication techniques such as beamforming, MIMO, and array antennas. The application of cloud radio access networks (cloud RAN) as the b