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EP-4175393-B1 - METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING UPLINK DATA REPETITIONS FOR NETWORK COOPERATIVE COMMUNICATIONS

EP4175393B1EP 4175393 B1EP4175393 B1EP 4175393B1EP-4175393-B1

Inventors

  • LIM, Seongmok
  • JANG, Youngrok
  • ABEBE, Ameha Tsegaye
  • Ji, Hyoungju

Dates

Publication Date
20260506
Application Date
20220118

Claims (15)

  1. A method performed by a user equipment, UE, in a wireless communication system, the method comprising: receiving, from a base station, a radio resource control, RRC, message including configuration information on a first sounding reference signal, SRS, resource set (1930) and a second SRS resource set (1940); receiving, from the base station, downlink control information, DCI, on a physical downlink control channel, PDCCH, including a first SRS resource indicator, SRI (1901) and a second SRI (1902); and applying the first SRI (1901) and the second SRI (1902) to one or more physical uplink shared channel, PUSCH, repetitions, wherein the first SRI (1901) is associated with a most recent transmission of an SRS resource (1931) associated with the first SRS resource set (1930) before the PDCCH, and wherein the second SRI (1902) is associated with a most recent transmission of an SRS resource (1942) associated with the second SRS resource set (1931) before the PDCCH.
  2. The method of claim 1, wherein the applying the first SRI and the second SRI to one or more PUSCH repetitions further comprising: applying the first SRI (1901) to one or more PUSCH repetitions associated with the first SRS resource set (1930).
  3. The method of claim 1, wherein the applying the first SRI and the second SRI to one or more PUSCH repetitions further comprising: applying the second SRI (1902) to one or more PUSCH repetitions associated with the second SRS resource set (1940).
  4. The method of claim 1, wherein the first SRS resource set (1930) is used for codebook based transmission or non-codebook based transmission, and wherein the second SRS resource set (1940) is used for codebook based transmission or non-codebook based transmission.
  5. A method performed by a base station in a wireless communication system, the method comprising: transmitting, to a user equipment, UE, a radio resource control, RRC, message including configuration information on a first sounding reference signal, SRS, resource set (1930) and a second SRS resource set (1940); and transmitting, to the UE, downlink control information, DCI, on a physical downlink control channel, PDCCH, including a first SRS resource indicator, SRI, (1901) and a second SRI (1902), wherein the first SRI (1901) and the second SRI (1902) are applied to one or more physical uplink shared channel, PUSCH, repetitions, wherein the first SRI (1901) is associated with a most recent transmission of an SRS resource (1931) associated with the first SRS resource set (1930) before the PDCCH, and wherein the second SRI (1902) is associated with a most recent transmission of an SRS resource (1942) associated with the second SRS resource set (1940) before the PDCCH.
  6. The method of claim 5, wherein the first SRI (1901) is applied to one or more PUSCH repetitions associated with the first SRS resource set (1930).
  7. The method of claim 5, wherein the second SRI (1902) is applied to one or more PUSCH repetitions associated with the second SRS resource set (1940).
  8. The method of claim 5, wherein the first SRS resource set (1930) is used for codebook based transmission or non-codebook based transmission, and wherein the second SRS resource set (1940) is used for codebook based transmission or non-codebook based transmission.
  9. A user equipment, UE, in a communication system, the UE comprising: a transceiver (220, 2210); and a controller (2205) configured to: receive, from a base station, a radio resource control, RRC, message including configuration information on a first sounding reference signal, SRS, resource set (1930) and a second SRS resource set (1940); receive, from the base station, downlink control information, DCI, on a physical downlink control channel, PDCCH, including a first SRS resource indicator, SRI, (1901) and a second SRI (1902); and apply the first SRI (1901) and the second SRI (1902) to one or more physical uplink shared channel, PUSCH, repetitions, wherein the first SRI (1901) is associated with a most recent transmission of an SRS resource (1931) associated with the first SRS resource set (1930) before the PDCCH, and wherein the second SRI (1902) is associated with a most recent transmission of an SRS resource (1942) associated with the second SRS resource set (1940) before the PDCCH.
  10. The UE of claim 9, wherein the first SRI (1901) is applied to one or more PUSCH repetitions associated with the first SRS resource set (1930).
  11. The UE of claim 9, wherein the second SRI (1902) is applied to one or more PUSCH repetitions associated with the second SRS resource set (1940).
  12. The UE of claim 9, wherein the first SRS resource set (1930) is used for codebook based transmission or non-codebook based transmission, and wherein the second SRS resource set (1940) is used for codebook based transmission or non-codebook based transmission.
  13. A base station, BS, in a communication system, the BS comprising: a transceiver (2300, 2310); and a controller (2305) configured to: transmit, to a user equipment, UE, a radio resource control, RRC, message including configuration information on a first sounding reference signal, SRS, resource set (1930) and a second SRS resource set (1940); and transmit, to the UE, downlink control information, DCI, on a physical downlink control channel, PDCCH, including a first SRS resource indicator, SRI, (1901) and a second SRI (1902), wherein the first SRI (1901) and the second SRI (1902) are applied to one or more physical uplink shared channel, PUSCH, repetitions, wherein the first SRI (1901) is associated with a most recent transmission of an SRS resource (1931) associated with the first SRS resource set (1930) before the PDCCH, and wherein the second SRI (1902) is associated with a most recent transmission of an SRS resource (1942) associated with the second SRS resource set (1902) before the PDCCH.
  14. The BS of claim 13, wherein the first SRI (1901) is applied to one or more PUSCH repetitions associated with the first SRS resource set (1930), and wherein the second SRI (1902) is applied to one or more PUSCH repetitions associated with the second SRS resource set (1940).
  15. The BS of claim 13, wherein the first SRS resource set (1930) is used for codebook based transmission or non-codebook based transmission, and wherein the second SRS resource set (1940) is used for codebook based transmission or non-codebook based transmission.

Description

[Technical Field] The disclosure relates to a method and an apparatus for performing data repetitive transmission and reception in a network cooperative communication system. [Background Art] 5G mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in "Sub 6GHz" bands such as 3.5GHz, but also in "Above 6GHz" bands referred to as mmWave including 28GHz and 39GHz. In addition, it has been considered to implement 6G mobile communication technologies (referred to as Beyond 5G systems) in terahertz bands (for example, 95GHz to 3THz bands) in order to accomplish transmission rates fifty times faster than 5G mobile communication technologies and ultra-low latencies one-tenth of 5G. In the initial stage of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand, (eMBB), Ultra Reliable & Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive MIMO for alleviating radio-wave path loss and increasing radio-wave transmission distances in mmWave, numerology (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BWP (BandWidth Part), new channel coding methods such as a LDPC (Low Density Parity Check) code for large-capacity data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network customized to a specific service. Currently, there is ongoing discussion regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as V2X for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, NR-U (New Radio Unlicensed) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for securing coverage in an area ipn which communication with terrestrial networks is impossible, and positioning. Moreover, there has been ongoing standardization in wireless interface architecture/protocol fields regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture/service fields regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions. If such 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting AR, VR, and the like (XR = AR + VR + MR), 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication. Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new waveforms for securing coverage in terahertz bands of 6G mobile communication technologies, Full Dimensional MIMO (FD-MIMO), multi-antenna transmission technologies such as array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using OAM (Orbital Angular Momentum), and RIS (Reconfigurable Intelligent Surface), but also full-duplex technology for increasing frequency efficiency of 6G mobile communication technologies and improving system network